CN221053770U - Hydraulic control water recovery system for steam extraction check valve of steam turbine - Google Patents
Hydraulic control water recovery system for steam extraction check valve of steam turbine Download PDFInfo
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- CN221053770U CN221053770U CN202322661621.1U CN202322661621U CN221053770U CN 221053770 U CN221053770 U CN 221053770U CN 202322661621 U CN202322661621 U CN 202322661621U CN 221053770 U CN221053770 U CN 221053770U
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- extraction check
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 268
- 238000000605 extraction Methods 0.000 title claims abstract description 58
- 238000011084 recovery Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a hydraulic control water recovery system of a steam extraction check valve of a steam turbine, which comprises a steam extraction check valve arranged on a fluid pipeline of the steam turbine, wherein a water outlet of a valve water chamber on the steam extraction check valve is connected with a water inlet pipeline of a water tank, a water outlet on the water tank is connected with a hot well pipeline of a condenser, and a water outlet on the condenser is respectively connected with a water inlet of a deaerator and a water inlet pipeline of a valve water chamber on the steam extraction check valve through a condensate pump. The liquid control water discharged by the steam extraction check valve is collected in the water tank, the water body collected in the water tank is sucked into the condenser by utilizing the negative pressure space of the condenser through a pipeline, one part of water body in the condenser is pumped to the deaerator for treatment by the condensed water pump, and the other part of water body in the condenser is pumped to the valve water chamber on the steam extraction check valve by the condensed water pump for continuous use as liquid control water, so that the recycling effect of the liquid control water discharged by the steam extraction check valve is realized, and the purposes of saving water resources and improving the resource utilization rate are achieved.
Description
Technical Field
The utility model relates to the technical field of steam and water recovery of steam turbines, in particular to a hydraulic control water recovery system of a steam extraction check valve of a steam turbine.
Background
The large-sized steam turbine is a host device of a thermal power generation plant or a nuclear power plant, and fossil energy (coal, natural gas and the like) or nuclear energy is converted into heat energy of steam, and the heat steam drives the steam turbine to rotate for power generation. The steam extraction check valve is a common valve arranged on a fluid pipeline of the steam turbine, and in the operation process of the steam extraction check valve, the valve water chamber of the steam extraction check valve needs to continuously pass through the hydraulic control water to reach the normal control pressure of the valve rod, so that a large amount of hydraulic control water is discharged from the steam extraction check valve in the operation process. At present, most of the hydraulic control water discharged by the steam extraction check valve is directly discharged into a trench, so that water resource waste is caused, and therefore, a steam turbine steam extraction check valve hydraulic control water recovery system is needed to solve the technical problems.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a hydraulic control water recovery system of a steam turbine steam extraction check valve, wherein hydraulic control water discharged by the steam extraction check valve is collected in a water tank, a negative pressure space of a condenser is utilized to suck water body collected in the water tank into the condenser through a pipeline, one part of water body in the condenser is pumped to a deaerator for treatment through condensation water, and the other part of water body in the condenser is pumped to a valve water chamber on the steam extraction check valve through condensation water for continuous use as hydraulic control water, so that the recycling effect of the hydraulic control water discharged by the steam extraction check valve is realized, and the purposes of saving water resources and improving the resource utilization rate are achieved; the whole structure design is ingenious, the application and implementation feasibility is high, and the economical practicability is strong.
In order to achieve the above purpose, the technical scheme of the utility model is to design a hydraulic control water recovery system of a steam turbine steam extraction check valve, which comprises a steam extraction check valve arranged on a steam turbine fluid pipeline, wherein a water outlet of a valve water chamber arranged on the steam extraction check valve is connected with a water inlet pipeline of a water tank, a water outlet arranged on the water tank is connected with a hot well pipeline of a condenser, and a water outlet arranged on the condenser is respectively connected with a water inlet of a deaerator and a water inlet pipeline of a valve water chamber arranged on the steam extraction check valve through a condensate pump.
According to the liquid control water recovery system of the steam turbine steam extraction check valve, liquid control water discharged by the steam extraction check valve is collected in the water tank, the water body collected in the water tank is sucked into the condenser through the pipeline by utilizing the negative pressure space of the condenser, one part of water body in the condenser is pumped to the deaerator through the condensed water pump, the other part of water body in the condenser is pumped to the valve water chamber on the steam extraction check valve through the condensed water pump to be continuously used as liquid control water, the recycling effect of the liquid control water discharged by the steam extraction check valve is realized, and therefore the purposes of saving water resources and improving the resource utilization rate are achieved; the whole structure design is ingenious, the application and implementation feasibility is high, and the economical practicability is strong.
The preferred technical scheme is that a valve I is arranged on a connecting pipeline between a water outlet of a valve water chamber and a water inlet of a water tank, a valve II close to the water outlet of the water tank and a valve III close to the heat well of the condenser are arranged on a connecting pipeline between the water outlet of the water tank and the heat well of the condenser, a valve IV close to the water outlet of the condenser and a valve V close to a water inlet end of the condensate pump are arranged on a connecting pipeline between the water outlet of the condenser and the condensate pump, and a valve VI is arranged on a connecting pipeline between a water outlet end of the condensate pump and the water inlet of the valve water chamber. The valve installation position is reasonable in layout, so that the communication relation among all the components is flexibly controlled, and meanwhile, the components are conveniently subjected to valve closing maintenance.
Further preferable technical scheme is that the water outlet of the condenser is connected with the water inlet pipeline of the sealed water chamber of the water supply pump through a condensate pump, and a valve seven is arranged on the pipeline between the water outlet end of the condensate pump and the water inlet of the sealed water chamber of the water supply pump. The water body collected in the condenser can also be used as sealing water of a water supply pump, so that the application of the condensed water in the turbine equipment is expanded, and the available way of the condensed water is further expanded.
Further preferable technical scheme is that the water inlet of the water tank is positioned at the upper end or the top of the side wall of the water tank, and the water outlet of the water tank is positioned at the lower end or the bottom of the side wall of the water tank.
Further preferable technical scheme is that an overflow port at the upper end of the side wall of the water tank is connected into the trench through an overflow pipe. When the water body collected in the water tank reaches the overflow liquid level, the water body overflows into the trench through the overflow pipe, so that overflow accidents are avoided.
The further preferable technical scheme is that a vent positioned at the lower end or the bottom of the side wall of the water tank is connected into a trench through a valve eight and a pipeline. When the water tank needs to be cleaned or overhauled, the valve eight is opened to empty the water tank, so that the water tank is convenient to clean or overhaule.
Further preferably, the water tank is provided with a liquid level meter, the valve II is an electromagnetic valve or an electric valve, and the liquid level meter and the valve II are electrically connected with the control system. When the water body in the water tank reaches the lowest liquid level surface, the liquid level meter feeds back the liquid level value to the control system, the control system sends a closing signal to the valve II, and the valve II is closed, so that air in the water tank is prevented from entering the condenser, and the use safety of the condenser is ensured.
Further preferable technical scheme is that the two condensate pumps are arranged in parallel. The two condensate pumps are arranged in parallel to achieve the purpose of one standby, so that when one condensate pump is in fault maintenance, the steam turbine steam extraction check valve hydraulic control water recovery system can still normally operate.
The utility model has the advantages and beneficial effects that:
1. According to the liquid control water recovery system of the steam turbine steam extraction check valve, liquid control water discharged by the steam extraction check valve is collected in the water tank, the water body collected in the water tank is sucked into the condenser through the pipeline by utilizing the negative pressure space of the condenser, one part of water body in the condenser is pumped to the deaerator through the condensed water pump, the other part of water body in the condenser is pumped to the valve water chamber on the steam extraction check valve through the condensed water pump to be continuously used as liquid control water, the recycling effect of the liquid control water discharged by the steam extraction check valve is realized, and therefore the purposes of saving water resources and improving the resource utilization rate are achieved; the whole structure design is ingenious, the application and implementation feasibility is high, and the economical practicability is strong.
2. The water body collected in the condenser can also be used as sealing water of a water supply pump, so that the application of the condensed water in the turbine equipment is expanded, and the available way of the condensed water is further expanded.
3. The water tank is provided with a liquid level meter, the valve II is an electromagnetic valve or an electric valve, and the liquid level meter and the valve II are electrically connected with a control system. When the water body in the water tank reaches the lowest liquid level surface, the liquid level meter feeds back the liquid level value to the control system, the control system sends a closing signal to the valve II, and the valve II is closed, so that air in the water tank is prevented from entering the condenser, and the use safety of the condenser is ensured.
4. The two condensate pumps are arranged in parallel to achieve the purpose of one standby, so that when one condensate pump is in fault maintenance, the steam turbine steam extraction check valve hydraulic control water recovery system can still normally operate.
Drawings
FIG. 1 is a schematic diagram of a steam turbine extraction check valve hydraulic control water recovery system.
In the figure: 1. a turbine fluid conduit; 2. a steam extraction check valve; 3. a water tank; 4. a condenser; 5. a condensate pump; 6. a deaerator; 7. a water feed pump; 8. a trench; 2-1, valve water chamber; 3-1, overflow pipe; 3-2, a liquid level meter; a. a valve I; b. a second valve; c. a third valve; d. a valve IV; e. a fifth valve; f. a valve six; g. a valve seven; h. and a valve eight.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
Examples
As shown in figure 1, the utility model relates to a hydraulic control water recovery system of a steam turbine steam extraction check valve, which comprises a steam extraction check valve 2 arranged on a steam turbine fluid pipeline 1, wherein a water outlet of a valve water chamber 2-1 arranged on the steam extraction check valve 2 is connected with a water inlet pipeline of a water tank 3, a water outlet arranged on the water tank 3 is connected with a hot well pipeline of a condenser 4, and a water outlet arranged on the condenser 4 is respectively connected with a water inlet of a deaerator 6 and a water inlet pipeline of the valve water chamber 2-1 arranged on the steam extraction check valve 2 through a condensate pump 5.
Preferably, a valve A is arranged on a connecting pipeline between a water outlet of the valve water chamber 2-1 and a water inlet of the water tank 3, a valve B close to the water outlet of the water tank 3 and a valve C close to the hot well of the condenser 4 are arranged on a connecting pipeline between the water outlet of the water tank 3 and the hot well of the condenser 4, a valve D close to the water outlet of the condenser 4 and a valve five e close to the water inlet end of the condensate pump 5 are arranged on a connecting pipeline between the water outlet of the condenser 4 and the condensate pump 5, and a valve six f is arranged on a connecting pipeline between the water outlet end of the condensate pump 5 and the water inlet of the valve water chamber 2-1.
Further preferably, the water outlet of the condenser 4 is connected with the water inlet pipeline of the sealed water chamber of the water feeding pump 7 through a condensate pump 5, and a valve seven g is arranged on the pipeline between the water outlet end of the condensate pump 5 and the water inlet of the sealed water chamber of the water feeding pump 7.
It is further preferred that the water inlet of the water tank 3 is positioned at the upper end or top of the side wall, and the water outlet of the water tank 3 is positioned at the lower end or bottom of the side wall.
It is further preferred that the overflow port at the upper end of the side wall of the water tank 3 is connected to the trench 8 through the overflow pipe 3-1.
It is further preferable that the vent at the lower end or bottom of the side wall of the water tank 3 is connected to the trench 8 through a valve eight h and a pipeline.
It is further preferable that the water tank 3 is provided with a liquid level meter 3-2, the valve b is an electromagnetic valve or an electric valve, and the liquid level meter 3-2 and the valve b are electrically connected with a control system.
In a further preferred embodiment, two condensate pumps 5 are arranged in parallel.
The utility model relates to a working principle of a steam turbine extraction check valve hydraulic control water recovery system, which comprises the following steps:
The liquid control water discharged from the valve water chamber 2-1 on the steam extraction check valve 2 is firstly collected in the water tank 3 through a pipeline, the water collected in the water tank 3 is sucked into the condenser 4 through the pipeline by the negative pressure space in the condenser 4, the water collected in the condenser 4 is sent to the deaerator 6 for treatment through the first path of the condensate pump 5, the second path is sent to the valve water chamber 2-1 on the steam extraction check valve 2 for liquid control water use, and the third path is sent to the sealed water chamber of the water supply pump 7 for sealed water use; when the water level of the water body collected in the water tank 3 is higher than the overflow port, the water body overflows into the trench 8 through the overflow pipe 3-1; when the water level collected in the water tank 3 reaches the lowest water level, the control system sends a closing signal to the valve B, the valve B is closed, air in the water tank 3 is prevented from entering the condenser, and the use safety of the condenser 4 is ensured; when the water tank 3 needs to be cleaned or overhauled, the valve is opened for eight hours to empty the water tank 3, and then the water tank 3 is cleaned or overhauled.
According to the liquid control water recovery system of the steam turbine steam extraction check valve, liquid control water discharged by the steam extraction check valve is collected in the water tank, the water body collected in the water tank is sucked into the condenser through the pipeline by utilizing the negative pressure space of the condenser, one part of water body in the condenser is pumped to the deaerator through the condensed water pump, the other part of water body in the condenser is pumped to the valve water chamber on the steam extraction check valve through the condensed water pump to be continuously used as liquid control water, the recycling effect of the liquid control water discharged by the steam extraction check valve is realized, and therefore the purposes of saving water resources and improving the resource utilization rate are achieved; the water body collected in the condenser can also be used as sealing water of a water supply pump, so that the application of the condensed water in the turbine equipment is expanded, and the available way of the condensed water is further expanded; the whole structure design is ingenious, the application and implementation feasibility is high, and the economical practicability is strong.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (8)
1. The utility model provides a steam turbine extraction check valve hydraulically controlled water recovery system, its characterized in that includes extraction check valve (2) of installing on steam turbine fluid pipeline (1), the delivery port that is located valve hydroecium (2-1) on extraction check valve (2) meets with the water inlet pipeline of water tank (3), the delivery port that is located on water tank (3) meets with the hot well pipeline of condenser (4), the delivery port that is located on condenser (4) meet with the water inlet of deaerator (6) respectively through condensate pump (5), the water inlet pipeline of valve hydroecium (2-1) on extraction check valve (2).
2. The steam turbine extraction check valve hydraulic control water recovery system according to claim 1, wherein a valve I (a) is arranged on a connecting pipeline between a water outlet of the valve water chamber (2-1) and a water inlet of the water tank (3), a valve II (b) close to the water outlet of the water tank (3) and a valve III (c) close to the hot well of the condenser (4) are arranged on a connecting pipeline between the water outlet of the water tank (3) and the hot well of the condenser (4), a valve IV (d) close to the water outlet of the condenser (4) and a valve V (e) close to the water inlet of the condensate pump (5) are arranged on a connecting pipeline between the water outlet of the condensate pump (5) and the water inlet of the valve water chamber (2-1), and a valve VI (f) is arranged on a connecting pipeline between the water outlet of the condensate pump (5) and the water inlet of the valve water chamber (2-1).
3. The steam turbine extraction check valve hydraulic control water recovery system according to claim 2, wherein the water outlet of the condenser (4) is connected with the water inlet pipeline of the sealed water chamber of the water supply pump (7) through a condensate pump (5), and a valve seven (g) is arranged on the pipeline between the water outlet end of the condensate pump (5) and the water inlet of the sealed water chamber of the water supply pump (7).
4. A steam turbine extraction check valve hydraulic control water recovery system according to claim 3, wherein the water inlet of the water tank (3) is positioned at the upper end or the top of the side wall, and the water outlet of the water tank (3) is positioned at the lower end or the bottom of the side wall.
5. The steam turbine extraction check valve hydraulic control water recovery system according to claim 4, wherein an overflow port at the upper end of the side wall of the water tank (3) is connected into the trench (8) through an overflow pipe (3-1).
6. The steam turbine extraction check valve hydraulic control water recovery system according to claim 5, wherein a vent positioned at the lower end or the bottom of the side wall of the water tank (3) is connected into a trench (8) through a valve eight (h) and a pipeline.
7. The steam turbine extraction check valve hydraulic control water recovery system according to claim 6, wherein the water tank (3) is provided with a liquid level meter (3-2), the valve II (b) is an electromagnetic valve or an electric valve, and the liquid level meter (3-2) and the valve II (b) are electrically connected with the control system.
8. The steam turbine extraction check valve hydraulic control water recovery system according to claim 7, wherein two condensate pumps (5) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322661621.1U CN221053770U (en) | 2023-10-07 | 2023-10-07 | Hydraulic control water recovery system for steam extraction check valve of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322661621.1U CN221053770U (en) | 2023-10-07 | 2023-10-07 | Hydraulic control water recovery system for steam extraction check valve of steam turbine |
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| CN221053770U true CN221053770U (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322661621.1U Active CN221053770U (en) | 2023-10-07 | 2023-10-07 | Hydraulic control water recovery system for steam extraction check valve of steam turbine |
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| CN (1) | CN221053770U (en) |
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2023
- 2023-10-07 CN CN202322661621.1U patent/CN221053770U/en active Active
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