Separators continuous blowing are designed to separate the steam-water mixture formed from the blowdown water of steam boilers into steam and water by reducing its pressure to the pressure in the separator (which leads to boiling of water), followed by the use of heat from water and steam.
To speed up the separation process, a tangential supply of purge water is used. The separators also have vertical louvered drop eliminators for drying secondary boiling steam.
The separator is a vertical cylindrical vessel welded structure and consists of a body with a lower elliptical bottom welded to it; The upper elliptical bottom is connected to the body using a flange connector. In the middle part of the body, 2 or 4 supports are welded for installing the separator in a suspended state on support beams.
In the lower part of the housing there is a receiving device, consisting of two concentrically installed shells and two tangentially welded pipes into the housing, designed to receive tangentially supplied purge water.
In the upper part of the housing, a separating device is bolted to the ring, consisting of a set of specially bent blades and designed to separate small drops of water from steam.
A constant level of separated water is automatically maintained by a float level regulator built into the fitting at the bottom of the housing.
To visually monitor the level of separated water, the separator is equipped with a water indicating device, consisting of water indicator glass and valve type taps.
To monitor the working pressure in the steam space of the separator, there is a pressure gauge indicating a measurement limit of up to 1.6 MPa with a 3-way purge valve and a drain valve.
Cutting off steam pressure in the housing above the permissible level (0.75 MPa) is ensured by a full-lift flange safety valve, equipped with a replaceable spring operating at a pressure in the range of 0.7-1.3 MPa. Valve operation is adjusted to a pressure of 0.75 MPa. Top part The valve is closed by a cap, which contains an adjusting screw for setting the spring to a given pressure.
The operation of the separator is to receive a steam-water mixture from the boiler, dividing it into steam and water due to the expansion and rotational movement of the flow in the separator receiving device. The steam is finally dried in a separating device.
The continuous purge separator is selected based on the purge water flow rate
where is the consumption of residual water at the outlet of the SNP, t/h;
Steam consumption at the outlet of the SNP, t/h
Based on the given conditions, we select separators of the SP-0.28-0.45 brand produced by the Saratov Power Engineering Plant. The main characteristics of SP-0.28-0.45 are given in the table. dimensions are indicated in Figure 3.3.3.
Table 3.3.3 - Specifications SP-0.28-0.45
Figure 3.3.2 - Overall dimensions of the separator SP-0.28-0.45: A-fitting of the level regulator; B-supply of steam-water mixture; B-output of separated steam; G-output of separated water; D - for safety valve; E-drainage; F-coupling pressure gauge; I-couplings for level indicator; K-fitting inspection
The cyclone-type continuous blowdown separator is designed to separate the boiler blowdown water into steam and water formed from the blowdown water of steam boilers when its pressure is reduced from intra-boiler pressure to the pressure in the separator and for the purpose of subsequent use of the heat of water and steam. Separation occurs due to the action of centrifugal forces caused by the tangential input of water into the separator. After this, steam with a high degree of dryness is supplied to the consumer.
Separators can be used in condensate systems to reduce the consumption of steam consumed and heat losses from the removed steam-condensate mixture.
In addition to the tangential supply of condensate (blowdown water), the separators are equipped with vertical louvered drop eliminators for drying the secondary boiling steam.
The separator is used in circuits with an atmospheric deaerator ( overpressure in the deaerator 0.02 MPa)
Name and symbol separator:
SNP -0.15-0.06 is a continuous blowing separator with a capacity of -0.15 m3 and a working pressure of 0.06 MPa.
Main parameters and technical characteristics
|
Name |
SNP-0.15-0.6 (Du-300) |
(Du-450) |
SNP-0.7-0.7 (Du-600) |
SNP-1.4-0.7 (Du-800) |
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|
Working pressure |
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Temperature |
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Test pressure |
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Steam capacity |
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Steam-water mixture consumption |
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Capacity |
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Design and principle of operation
The separator is a vertical cylindrical vessel (see Fig. 1) with flat or elliptical bottoms, a flattened inlet pipe or a circular pipe, steam and water outlet pipes and a float regulator that automatically maintains the water level. The flow is swirled through the organized supply of a steam-water mixture to the inner wall of the separator or through the installation of internal guide devices. Typically, the blowdown water consumption for the separator ranges from 1% to 5% of the boiler output.
Separation into steam and water occurs in the middle part of the separator. The steam, while maintaining rotational motion, is directed into the steam space and discharged through a pipe located on the upper bottom. Water flows down inner surface separator into the water volume and is discharged through a pipe located in the lower part of the housing. A fitting is provided on the lower bottom for draining water from the separator when it is turned off and for periodically cleaning the lower part of the water volume from sludge and contaminants.
Rice. 1. Continuous blowing separator
A – supply of purge water; B – removal of separated steam; B – drainage; G – removal of separated water.
1 – gate valve for separated water outlet; 2 – water level regulator; 3 – nozzle for the inlet of the purge steam-water mixture; 4 – supports; 5 – pipe for steam outlet; 6 – upper and lower bottom; 7 – separator body; 8 – water level indicator; 9 – valve for drainage.
On the cylindrical part of the body, two supports 4 are welded for installing the separator and a nozzle 3 for the tangential supply of the steam-water mixture of boiler purge water to the separator. In the upper bottom of the separator there is a pipe with a flange 5 for the outlet of separated steam, and in the lower bottom there is a fitting with a valve 9 for draining water from the separator when it is turned off and for the possibility of periodically removing sludge and contaminants from the lower part of the water volume.
In the lower cylindrical part of the housing there is a float regulator for the water level in the separator 2 and a level indicator 8. Using the level indicator, the water level is visually monitored. The float level regulator is designed for automatic maintenance constant water level in the separator.
The operation diagram of the float level regulator is shown in Fig. 2. The upper position of the float can be fixed by turning the lock handle at an angle of 30 degrees.
Fig.2. Scheme of operation of the float level regulator
The nozzle supplying purge water to the separator has a flattened cross-section at the outlet, which enhances the centrifugal effect by obtaining a pre-stratified flow of the steam-water mixture. The primary separation of the steam-water mixture begins outside the separator, in the supply pipeline low pressure(see Fig. 3), made of the same diameter as the nozzle. The separation of the steam-water mixture into steam and water, which began in the supply pipeline, ends in the separator.
Rice. 3. Connection diagram of the separator to the continuous blowdown of boilers.
1 – input of continuous boiler blowdown; 2 – pipelines high pressure; 3 – boiler blowing control unit; 4 – limit washers; 5 – shut-off valve; 6 – low pressure supply pipeline; 7 – supply pipe (nozzle); 8 – steam output; 9 – drainage; 10 – output of separated water.
The steam is directed into the steam space, and the separated water flows down the inner wall of the separator into the water volume.
Installation procedure
The separator is installed in accordance with the technical documentation developed by specialized design organizations and the requirements of the installation instructions.
The connection of the continuous blowing separator to the steam boiler room circuit should be performed in accordance with the diagram shown in Fig. 4.
Rice. 4. Connection diagram of the separator to the steam boiler house circuit.
1 – steam boiler; 2 – continuous blowing separator; 3 – water-to-water heat exchanger; 4 – chemical water treatment filter; 5 – supply raw water; 6 – tank; 7 – deaerator.
To prevent a possible increase in pressure in the separator, it is necessary to install a water seal on the outlet pipeline near the separator to the shut-off valve. On the steam outlet line from the separator to the deaerator shut-off valves do not install.
The separator is installed in a vertical position on pre-assembled support beams. Next, instrumentation, safety devices, a float level regulator are installed and piping is carried out.
The installation of the separator must provide the possibility of inspection, repair and cleaning of it both internally and externally. outside, must eliminate the danger of it tipping over. Hanging of the separator on the connecting pipelines is not allowed.
During installation, for ease of maintenance of the separator, platforms and stairs can be installed, which should not interfere with the strength, stability and possibility of free inspection and cleaning of the outer surface.
After installing and fastening the separator, piping it and equipping it with fittings, it is necessary to perform a hydraulic (pneumatic) test. After the hydraulic test, the separator and pipelines are washed, the functionality of the fittings, float level regulator, and safety valve is checked, after which the separator is put into operation.
Maintenance and Operation
The condition for normal and reliable operation of the separator is to ensure continuous removal of steam and water from the separator and maintain the pressure in the separator within the established limits. This is achieved if the float level regulator and water seal are in good condition.
The separator must be under constant supervision of maintenance personnel. The proper condition of the level regulator should be properly monitored:
- once a shift, check the mobility of the float and associated parts by turning the drain valve lock handle;
- Monitor steam pressure at least 3 times per shift;
- At least 3 times per shift, monitor the presence of a normal level of condensate in the housing using the water indicator glass.
- Purge the level indicator at least once per shift, depending on the quality of the purge water.
Reliable operation of the water seal must be ensured by the design and compliance with the requirements of the instructions for its maintenance.
When the separator is completely disconnected from the purge lines, in order to prevent a possible connection of the deaerator with the atmosphere through the separator in this case, the level control valve and the gate valve at the water outlet from the separator should be completely closed.
Periodic inspection of the separator should be carried out both for preventive purposes and to identify the causes of problems that have arisen.
Inspection and cleaning of the separator body must be carried out at least once every 2-3 years when the separator is shut down for routine and major repairs.
Continuous blowing separators must undergo technical inspection after installation, before putting into operation, periodically during operation and, if necessary, extraordinary inspection.
In case of long-term repairs, as well as insufficient density of the shut-off valves, the equipment being repaired should be switched off. The thickness of the plugs must correspond to the parameters of the working environment.
When loosening bolts on flange connections, care must be taken to ensure that steam and water inside the separator and piping do not cause burns to people.
graduate work
2.7 Design and principle of operation of a continuous blowing separator
To use the heat of the blowdown water for deaeration, separators for continuous blowdown from the boilers are installed in the boiler area control room.
The separator consists of a housing, a volute, a plate-type droplet eliminator, a blow-off water outlet regulator, a separated steam outlet, an outlet to a safety valve, a water meter glass, and drainage outlet pipelines.
The operating principle of the separator is based on the separation of steam and condensate from the blowing emulsion removed from boilers with continuous blowing, due to sudden change(increase) the volume in the expander (separator body) and, accordingly, the pressure drop of the supplied purge medium to the pressure in the expander.
Blowdown water with a pressure equal to the steam pressure in the drum of the recovery boiler is supplied to the blowdown water inlet of the separator through a common blowdown water collector. Due to the tangential location of the purge water inlet, the flow acquires a rotational motion, due to which there is an intensive separation of the steam-water emulsion into steam and water, which have different meanings density, at the opposite walls of the separator volute. Passing through the gap in the cochlea, the flow enters inner space separator housing (expander). Due to a sharp change in volume, the pressure of the supplied water drops and boiling of superheated water occurs.
The steam separated in the volute and the steam released when the liquid boils enters the upper steam part of the separator, passes through a droplet eliminator, where it is freed from water particles captured by the steam flow and then goes through a pipeline to the deaeration column. Water enters the lower part of the separator, where it is maintained using a float regulator normal level water (the level fluctuating in the middle part of the water indicator glass is considered normal). Excess water is removed to the sewer.
If necessary (if the level regulator malfunctions, the water level in the separator increases above the permissible level, etc.), water can be removed through the drainage in the lower part of the separator.
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Polar Division of OJSC MMC Norilsk Nickel
PA "Norilskenergo"
I N S T R U C T I O N
for maintenance of separators for continuous blowing of boilers TGME - 464.
PI –188-50-05-03
Norilsk - 2003
Polar Division of OJSC MMC Norilsk Nickel
PA "Norilskenergo"
I CONFIRM:
Chief engineer of CHPP-3
V.M.Lomenko
"___"_____________2003
I N S T R U C T I O N
for maintenance of separators for continuous blowing of boilers TGME-464.
PI –188-50-05-03
1. A common part.
This instruction has been compiled on the basis of the factory instructions for servicing continuous blowing separators (1RNP, 2RNP) and is mandatory for execution by NSS, NS KTC, art. boiler equipment operator, line operator.
2. Purpose of continuous blowing separators (expanders).
Continuous blowing separators are designed to separate the steam-water mixture coming from boilers during its continuous blowing, removing from the boiler non-stick sludge suspended in the boiler water.
3. Device and technical characteristics.
There are two continuous blowing separators of different types installed in the boiler room.
1RNP is supplied with water for continuous blowdown of boilers No. 1, 2.
Water for continuous blowdown of boilers No. 3 and 2 is supplied to 2RNP.
3.1. Continuous blowing separator (1RNP) type TK - 3 single-casing, vertical type. Consists of a cylindrical body, two elliptical bottoms, supports, fittings:
Supply of steam-water mixture;
Steam exhaust;
Water drainage;
Safety valve connections;
VUK affiliations;
Level regulator.
Float type level regulator. There is a hole on the body with a diameter of DN 450 mm. The supply of steam-water mixture from boilers No. 1, 2 is made from two opposite sides tangentially to the circumference of the shell into the annular valve. Separation of the steam-water mixture is carried out due to the action of centrifugal forces.
The separator has one safety valve type SPPK – 4 - 16 - 150. The valve is adjusted to an operating pressure of 1.15 Рр.
Separator characteristics:
Case diameter – 1500 mm;
Volume – 5.5 m3;
Temperature – 170 °C;
Medium – saturated steam water;
Steel grade – VST 3 PS 5.
3.2. Continuous blowing separator (2RNP) TKZ type SP – 1.5 u, centrifugal. Determination of steam from the incoming flow of steam-water mixture occurs on special blades with a small radius of curvature. The device is single-case, vertical type. Consists of a cylindrical body, two elliptical bottoms, supports, fittings:
Supply of steam-water mixture;
Steam exhaust;
Water drainage;
Safety valve connections;
Level indicator connections.
Inside the apparatus there are: a blade device, a grate, a cone that prevents the steam-water mixture from affecting the water level, and an anti-twist device in the lower bottom. The separator is equipped with two safety valves of the SPPK – 4 – 16 – 150 type, one on the body, the other on the steam exhaust pipeline. Level regulator - float type.
Separator characteristics:
Case diameter – 800 mm;
Working pressure – 8 kgf/cm2;
Volume – 1.5 m3;
Temperature – 170 °C;
Medium – saturated steam water;
Pressure at G.I. – 11 kgf/cm2;
Water productivity – 28.4 t/h;
Steam output – 12.5 t/h.
4. Connection diagram 1 RNP.
Boiler water from two external cyclones of the boiler through a pipeline DN 28x3 enters the continuous blowdown separator or into the periodic blowdown expander when the RNP is not operating. The following are installed in series on the pipeline: two shut-off valves DN - 20, a flow washer, a pressure regulator DN - 20, a shut-off valve DN - 20 on the line to the separator, a shut-off valve DN - 20 on the line to the periodic blowdown expander. After the separator, the steam is discharged into the general station collector 6 atm.
The following are installed on the steam pipeline:
check valve, gate valve DN - 150. Up to check valve an air vent line was made to the funnel up to the valve - an inspection line to the exhaust pipeline of the safety valve. Water after the separator enters the periodic blowdown expander and then into the bubbler.
The water level in the separator is maintained by a level regulator and controlled by the VUK. When the level regulator is turned on, the valves DNP - 2, 3 and the valves of the float chamber for water and steam must be open. Valve DNP – 1 must be closed.
5. The procedure for including 1RNP in work.
Before putting the separator into operation, it is necessary to check the condition:
Thermal insulation;
Fittings and fasteners for flange connections;
Control and measuring instruments;
Water indicator and its lighting;
Platforms and stairs.
Gate valve to the DNP level regulator – 2;
Gate valve after the DNP level regulator – 3;
A valve in addition to the DNP level regulator – 1;
Float chamber valve for steam and water;
Air vent valve;
Valve for pressure gauge;
The valve on the steam line to the manifold is 6 ati (1PNP).
The separator must be turned on while warming up in the following sequence:
Slowly open valve DN – 20 to pressure regulator NP – 1, 2;
Blow up the valve DN - 20 (NP - 3) and the pressure regulator, feed the steam-water mixture into the separator without allowing hydraulic shocks.
Warm up the separator for 20 - 30 minutes, controlling the pressure and steam output from the vent;
At a pressure of 1 ati, blow out the water and steam valves of the VUK and turn on the VUK in operation;
Close the valve DNP – 1 in addition to the level regulator;
Gradually fully open valve NP – 3;
When the level increases, check the operation of the regulator;
Russian Federation Directive from the USSR Ministry of Energy
OST 108.838.11-81 Continuous blowing separator DN 300. Technical specifications (with Amendments No. 1, 2)
set bookmark
set bookmark
OST 108.838.11-81
Group E21
INDUSTRY STANDARD
CONTINUOUS BLOW SEPARATOR DN 300
TECHNICAL CONDITIONS
Valid from 09/01/81
until 01/01/92
____________________________
* Changed edition, Rev. N 2.
** Validity period removed
by letter from Roskommash dated 02.15.94 N 1/28-332. -
Database manufacturer's note.
APPROVED AND ENTERED INTO EFFECT by the order of the Ministry of Energy Engineering dated 05.08.81 N YUK-002/6143
Executor - NPO TsKTI:
A.M.Osipov, T.N.Primakina, E.S.Gavrikova
AGREED with the Main Technical Directorate for the Operation of Power Systems of the USSR Ministry of Energy and Electrification
V.I. Gorin
Central Committee of the Trade Union of Power Plant and Electrical Industry Workers of the USSR
A.S.Goroshkevich
INSTEAD OST 24.838.11-72
1. MAIN PARAMETERS AND DIMENSIONS
1.1. The design of the separator and its main connecting dimensions must correspond to those indicated in Figure 1. A description of the design and principle of operation of the separator is given in help app 1. When constructing a pipeline that removes steam from the separator (DN 80) to the deaerator, welded installation no flange required. The design of the level regulator can be changed by the manufacturer.
* Drawing 1. Amended edition, Rev. N 2.
1.2. The thickness of the body walls, bottoms and pipes is determined by calculation according to OST 108.031.02-75*.
________________
1.3. The parameters of the separator when connected to a deaerator with a pressure of 0.02 MPa (0.2 kgf/cm) must correspond to those indicated in Table 1.
Table 1
1.4. Separators with a working pressure of 0.061 MPa (0.6 kgf/cm) are intended for installation in circuits in which there is no shut-off valve on the steam line between the separator and the deaerator.
1.5. Operating pressure in the separator is set depending on the pressure in the deaerator and the magnitude of the total loss of resistance of the steam outlet pipeline.
1.6. The maximum permissible flow rate of purge water (t/h) directed to the separator is calculated using the formula
Where is the maximum permissible steam consumption, t/h;
Specific energy (enthalpy) of blowing water before throttling, J/kg;
Specific energy (enthalpy) of water and steam in the separator, J/kg.
The results of calculating the maximum permissible flow rate of blowdown water for the most common pressures in the boiler drum and separator are given in Table 2.
table 2
* In the territory Russian Federation the document is not valid. GOST 3619-89 is valid, hereinafter in the text
1.7. The water level in the separator must be within the water level indicator.
1.8. The steam humidity at the outlet of the separator should not exceed 0.5% over the entire load range with the salt content of the purge water not exceeding that specified for of this type boiler
1.9. The connection diagram of the separator to the supply pipeline is shown in Figure 3.
1 - introduction of continuous boiler blowdown; 2 - high pressure pipeline; 3 - boiler purge control unit; 4 - limit washer; 5 - separator shut-off valves; 6 - low pressure supply pipeline; 7 - separator inlet pipe
The supply pipeline must be made of pipes with a diameter equal to the diameter of the separator pipe and have a straight horizontal section of at least 1.5 m in length.
2. TECHNICAL REQUIREMENTS
2.1. Separators with a specified maximum operating pressure, for which the "Rules for Design and safe operation vessels operating under pressure"*, approved by the State Mining and Technical Supervision of the USSR, are not covered, must be manufactured in accordance with the requirements of this standard and according to drawings approved in the prescribed manner. When supplied for export, they must also comply with the requirements of OST 108.001.102-76** and the order - order, and for delivery to countries with tropical climates - the requirements of GOST 15151-69... Welded joints must be made in accordance with GOST 5264-80, GOST 8713-79 and GOST 16037-80 and the requirements of working drawings. Marking of weld seams of separators is carried out according to the technical documentation of the manufacturer.
* The document is not valid on the territory of the Russian Federation. Valid PB 03-576-03 ;
** The document is not valid on the territory of the Russian Federation. - Database manufacturer's note.
2.2. The separator body must be made of a pipe with an outer diameter of 325 mm, and the supply pipe with a flattened section must be made of a pipe with an outer diameter of 159 mm, in accordance with GOST 8732-78 and supplied according to group A GOST 8731-74.
2.3. The separator bottoms can be made elliptical or flat.
2.4. The transition from the flattened section of the supply pipe to the cylindrical one should be smooth without tears or cracks. Corrugations and dents on the outer surface of the supply pipe resulting from flattening should not exceed 2 mm.
2.5. Installation of the flattened inlet pipe on the separator must be done tangentially to its inner cylindrical surface. Insertion of the flattened end of the fitting into the body at the mating point is allowed no more than 3 mm, and undercutting is not allowed (according to the control mark on the fitting).
2.6. Separators are supplied by the manufacturer without a safety valve and pressure gauge. When placing shut-off valves on the steam outlet pipe from the separator, it is necessary to install a safety valve and a pressure gauge. The latter are supplied by the manufacturer upon a special request from the customer and installed by the installation organization.
2.7. System automatic regulation can be performed using electrical, hydraulic and other automatic means.
2.8. The outer surfaces of the separator must be painted with BT-577 varnish in accordance with GOST 5631-79 in two layers on surfaces previously prepared for painting. Paint and varnish coatings for separators for export must be produced in accordance with the requirements of GOST 9.401-79*, GOST 9.402-80**, OST 108.982.101-83*** and technical documentation valid at the manufacturer. Groups of operating conditions paint coatings separators for intra-Union supplies U4, HL4, for export supplies - U4, TZ in accordance with GOST 9.104-79. Appearance painted surfaces must comply with coating class VI according to GOST 9.032-74, and when supplied for export - class V."
* The document is not valid on the territory of the Russian Federation. GOST 9.401-91 is valid, hereinafter in the text;
** The document is not valid on the territory of the Russian Federation. Valid GOST 9.402-2004 ;
*** The document is not valid on the territory of the Russian Federation. RD 24.982.101-89 is valid. The document is not provided. Behind additional information refer to the link, here and further in the text; - Database manufacturer's note.
2.9. The established trouble-free operating time is 10,000 hours. The full established service life before write-off is 30 years. Specified service life between major repairs- 4 years. Maintainability indicators according to OST 24.030.46-74.
2.10. The manufacture of a separator for various climatic regions must be carried out in accordance with the requirements of GOST 15150-69: separator category - 3, placement category for the main model - U, for the Far North - HL, for the tropics - T.
2.11. Separators must have patent clearance in relation to consumer countries.
2.11*. OKP codes for separators DN 300 are given in Table 3.
*Numbering corresponds to the original. - Database manufacturer's note.
Table 3
Continuous blowing separator DN 300 | |
DN 300, exp. Spanish | |
DN 300, trail. Spanish |
3. SAFETY REQUIREMENTS
3.1. When manufacturing purge separators, the requirements of GOST 12.1.003-83 and GOST 12.2.003-74* must be observed.
________________
* The document is not valid on the territory of the Russian Federation. GOST 12.2.003-91 is in force. - Database manufacturer's note.
3.2. Installation of the separator on supporting structure should prevent it from hanging on the inlet and outlet pipelines.
3.3. External surfaces of the separator after production installation work must be isolated. The insulation surface must have a temperature of no more than +45 °C.
3.4. If it is necessary to install a pressure gauge on the separator, it must be installed so that its readings are clearly visible service personnel. A red line should be applied to the dial of the pressure gauge through the scale division corresponding to the operating pressure, or a metal plate painted red should be attached to the outside of the pressure gauge.
3.5. If it is necessary to install a safety valve, it must be selected so that a pressure cannot develop in the vessel that exceeds the operating pressure by more than 15%.
The safety valve must have a protective casing or cap that excludes the possibility of arbitrary increase in the valve load. To check its serviceability by purging, the safety valve must be equipped with a device for forced opening of the valve during operation of the separator.
The working fluid leaving the safety valve must be diverted to a safe place.
3.6. The water level indicator must be well illuminated with a lamp of at least 50 lux and have a device for blowing the water level indicator glass. IN locking devices level indicator according to GOST 9652-68* union nuts must be made with a cylindrical protrusion for fastening the safety net.
* The document is not valid on the territory of the Russian Federation. TU 26-07-418-87, which is the author’s development, is in effect. For more information please follow the link. - Database manufacturer's note.
3.7. The water level regulator must have a handle installed outside the housing to open or close the regulator spool if a malfunction is detected in its operation.
3.8. The sound level at workplaces near the separator should be no more than 85 dBA.
4. COMPLETENESS
4.1. The manufacturer's delivery set includes:
separator;
level indicator;
level regulator;
pressure gauge and safety valve, if their installation is required;
shut-off drain valve;
passport with installation and operating instructions;
a set of technical and shipping documentation.
4.2. When delivering separators for export, the number of copies of shipping documentation is determined by the purchase order and drawn up in the language specified in the purchase order. Documentation must be completed and distributed in accordance with the “Regulations on the procedure for compiling, processing and distributing technical and shipping documentation for goods supplied for export.”
5. ACCEPTANCE RULES
5.1. The separator must be accepted by the technical control of the manufacturer if there is a formalized separator acceptance certificate and a stamp is applied to a specially cleaned area outlined with light paint.
5.2. During acceptance control, a technical inspection, checking for the absence of foreign objects, hydraulic tests for strength and density, correct preservation, painting, marking, and documentation are carried out.
5.3. The pressure value during hydraulic testing is selected in accordance with the Rules of the USSR State Mining and Technical Supervision and is indicated in technical project. Changes in pressure, leaks, drips are not allowed. The holding time during hydraulic testing is selected in accordance with the Rules of the USSR State Mining and Technical Supervision.
5.4. The rules for accepting separators for export deliveries must comply with the requirements of OST 108.001.102-76.
5.5. The separator must undergo the following types of tests:
acceptance;
periodic.
5.6. Each separator must undergo acceptance tests. Acceptance tests are carried out at the manufacturer and at the installation site of the separator (at thermal power plants) according to the program and methodology developed by the manufacturer.
5.7. Periodic testing separators that have passed acceptance tests are subjected to testing. Periodic tests are carried out before certification of the separator to monitor reliability indicators according to the program and methodology agreed with the customer. One separator is subjected to periodic testing once every 3 years.
5.8. The separator mass must be checked periodically at least once a year.
5.5-5.8. (Introduced additionally, Amendment No. 2).
6. CONTROL METHODS
6.1. Checking the compliance of separator parts with the drawings is carried out by visual and measuring control.
6.2. Quality control of welds should be carried out using the following methods:
visual and measuring control according to GOST 3242-79;
hydraulic testing for strength and density or other methods specified in the working drawings.
6.3. Hydraulic tests of separators must be carried out on the manufacturer's test bench according to the programs and methods of hydraulic tests. After hydraulic testing, water removal must be ensured by opening the drain valve.
6.4. Defects identified as a result of hydraulic tests are subject to correction and elimination, after which the separator is subjected to repeated hydraulic testing or the corrected sections of the separator are subject to control according to clause 6.2.
6.5. Checking for the absence of foreign objects, correct preservation, marking, and painting is carried out by visual inspection.
6.6. Monitoring of the established trouble-free operating time for compliance with clause 2.9 is carried out by processing the results of separator operation.
6.7. The separator mass is controlled on scales of normal accuracy class in accordance with GOST 23676-79*.
* The document is not valid on the territory of the Russian Federation. Valid GOST R 53228-2008. - Database manufacturer's note.
6.8. The humidity of the steam at the outlet of the separator is determined during testing as the ratio of the salt content of the sample taken of the steam at the outlet of the separator to the salt content of the separated water.
6.9. During acceptance tests, the separator's compliance with the requirements of clauses 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.10, 2.11 is checked.
6.6-6.9. (Introduced additionally, Amendment No. 1).
7. LABELING, PACKAGING, TRANSPORTATION AND STORAGE
7.1. Attached to the separator body metal plate, manufactured in accordance with OST 108.001.15-82*.
* The document is not valid on the territory of the Russian Federation, hereinafter in the text. - Database manufacturer's note.
Marking of separator housings should be done with NTs-132K or NTs-132P enamels according to GOST 6631-74, boxes with fittings - with BT-577 varnish according GOST 5631-79. Marking must comply with GOST 14192-77*. Marking of separators supplied for export must comply with the requirements of work orders and must be carried out with nitro enamel NTs-132K in accordance with GOST 6631-74 for temperate climates and enamels PF-115 in accordance with GOST 6465-76. For marking it is allowed to use other paint and varnish materials.
* The document is not valid on the territory of the Russian Federation. GOST 14192-96 is valid, hereinafter in the text. - Database manufacturer's note.
Bottom markings must be carried out in accordance with the technical documentation of the manufacturer.
7.2. Unpainted fasteners and machined surfaces of the separator must be preserved in accordance with GOST 9.014-78 for group P-4: for separators climatic version For intra-Union and export supplies, the category of storage and transportation conditions is F; for climatic versions HL and T of intra-Union and export supplies - coolant according to GOST 9.104-79. Protection option VZ-4 - PVK grease according to GOST 19537-83. Internal packaging option VU-0.
The protection period for groups of storage conditions liquid and coolant is 3 years according to GOST 9.014-78.
Groups of operating conditions with coatings in accordance with GOST 9.104-79 for intra-Union supplies - U4, HP4; for export deliveries - U4, TZ.
7.3. The separator body is supplied without packaging. When delivered for export and to the Arctic, Far North, and Far East regions, separators and components must be packaged in wooden boxes according to GOST 2991-76*. The cargo inside the boxes must be protected from damage during transportation and storage. When delivering separators for export to countries with temperate and tropical climates, the packaging of separators must be made in accordance with the requirements of the unified technical manual "Packaging for export cargo"** and GOST 24634-81. General requirements to the packaging of the separator, shipping documentation for intra-Union and export deliveries must comply with GOST 23170-78 and the “Regulations on the procedure for drawing up, processing and distributing technical and shipping documentation for goods supplied for export.”
* The document is not valid on the territory of the Russian Federation. GOST 2991-85 is valid, hereinafter;
7.4. Separators supplied to remote areas (Arctic, Far North, Far East) by rail and water transport, packaged in accordance with GOST 15846-79 *.
* The document is not valid on the territory of the Russian Federation. GOST 15846-2002 is valid, hereinafter in the text. - Database manufacturer's note.
7.6. Loading and securing cargo when shipping by railway must be made in accordance with Technical specifications loading and securing cargo.
7.7. Separators should be stored in indoors or on areas under a canopy. Group of storage conditions Zh2 according to GOST 15150-69.
In this case, separators must be installed on supports that protect them from contact with the ground. Separators stored in an open area must be inspected at least once a quarter and, if defects are detected that impair the quality of the coatings or presentation, they must be re-preserved.
8. OPERATING INSTRUCTIONS
8.1. The separator must be operated in accordance with the manufacturer's operating instructions.
When operating the separator, the steam pressure in the separator, the flow of blowdown water to the separator, and the water level in the separator must be monitored.
8.2. The steam pressure in the separator is measured by a pressure gauge installed on the separator in accordance with GOST 8625-77, accuracy class not lower than 2.5, measurement limits from 0 to 0.25 MPa (2.5 kgf/cm).
8.3. The flow of purge water into the separator is limited according to Table 2 by a throttling device installed on the continuous purge line.
8.4. The water level in the separator is controlled by a water meter glass located in the lower cylindrical part of the separator body.
8.5. The humidity of the steam at the outlet of the separator during its operation is not controlled, and its permissible value is determined by thermochemical tests of the main sample of the separator.
9. MANUFACTURER WARRANTY
9.1. The manufacturer guarantees that continuous blowing separators DN 300 mm comply with the requirements of this standard, subject to the conditions of installation, storage, operation and transportation.
