CN215520982U - Steam turbine body drainage flash tank exhaust steam recovery device - Google Patents
Steam turbine body drainage flash tank exhaust steam recovery device Download PDFInfo
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- CN215520982U CN215520982U CN202121072150.5U CN202121072150U CN215520982U CN 215520982 U CN215520982 U CN 215520982U CN 202121072150 U CN202121072150 U CN 202121072150U CN 215520982 U CN215520982 U CN 215520982U
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Abstract
The utility model relates to a steam exhaust recovery device of a drainage flash tank of a cogeneration steam turbine body, which comprises a spray water device component and a condensed water recovery device component; the heat supply network drainage main pipe (1) is sequentially connected with the water inlet pipeline (2) and the water inlet valve (3); the condensed water recovery device component comprises a water spraying ring (7), a steam turbine body drainage flash tank (4), a two-stage water seal (5) and a low-level water tank (6); the water spraying ring (7) is fixedly connected with the steam turbine body drainage flash tank (4) in a welding way through a water spraying pipeline in the steam turbine body drainage flash tank (4). The spray water source adopts the drainage of the heat supply network as the spray water source, thereby ensuring the medium quality of the steam-water system. The water outlet pipeline is connected to a low-level water tank (6) for recovering the non-pressure drainage water through two stages of water seals (5), and the recovered working medium and heat are recovered to a water supply system.
Description
The technical field is as follows:
the utility model relates to a steam turbine body drainage flash tank exhaust steam recovery device.
Background art:
the steam turbine body sets up the drainage flash vessel among the cogeneration, and the hydrophobic flash vessel of body sets up the steam extraction in order to prevent the superpressure operation, and at unit start-up initial stage, a large amount of pipeline dredges and the hydrophobic row of steam turbine body to the drainage flash vessel, and the steam extraction of drainage evaporation is arranged to the atmosphere in, still has high-low pressure bearing seal to leak the steam and arranges to the hydrophobic flash vessel of body in unit normal operating back, and the steam extraction of drainage evaporation is arranged to the atmosphere in, causes the waste of medium and heat energy.
The utility model content is as follows:
the utility model aims to provide a steam turbine body drainage flash tank exhaust steam recovery device, which is used for recovering heat and working media of drainage of a main steam pipeline and drainage of a steam turbine body in the starting process of a steam turbine, so that the cost is saved, the emission is reduced, and the cogeneration efficiency is improved. The technical scheme of the utility model is as follows: a steam turbine drainage flash tank exhaust steam recovery device comprises a spray water device component and a condensed water recovery device component; the spray water device component comprises a heat supply network drainage main pipe (1), a spray water inlet pipeline (2) and a spray water inlet valve (3); the heat supply network drainage main pipe (1) is sequentially connected with the water inlet pipeline (2) and the water inlet valve (3); the condensed water recovery device component comprises a water spraying ring (7), a steam turbine body drainage flash tank (4), a two-stage water seal (5) and a low-level water tank (6); the water spraying ring (7) is fixedly connected with the steam turbine body drainage flash tank (4) in a welding way through a water spraying pipeline in the steam turbine body drainage flash tank (4); the steam turbine body drainage flash tank (4) is fixedly connected with the two-stage water seal (5) in a welding mode, the two-stage water seal (5) is connected with the low-level water tank (6), and the other end of the water inlet valve (3) is connected with the steam turbine body drainage flash tank (4) through a pipeline.
The water sprinkling ring (7) is provided with two rows of included angles A: the diameter of 90 degrees is phi 2 water spraying holes.
The working principle of the utility model is as follows:
the utility model uses the drain of the heat supply network as a low-temperature spraying medium, enters the spraying ring through the spraying pipe, and then is sprayed downwards into the tank body with the body sparse and expanded at an included angle of 90 degrees, high-temperature steam recovered by the drain expander of the body is cooled into condensed water at the initial starting stage and in normal operation of the unit, and then the condensed water is recovered to a low-level water tank through two-stage water seals and finally recovered to a boiler water supply system, so that the water loss of the system is reduced, meanwhile, the heat is recovered, the waste is avoided, and the operation economy is improved.
The utility model has the technical effects that:
the drainage pipeline is provided with two stages of water seals (5), so that the waste caused by the removal of steam when no condensed water exists in the container is prevented, and the overpressure of the water tank caused by the fact that high-pressure steam enters the low-level water tank due to overhigh drainage pressure in the starting process of the unit is also prevented. The device has simple structure and low cost, only needs to add a water inlet valve (3) to adjust the flow, closes the valve to control the spraying water quantity on the premise of ensuring that the steam exhaust pipeline of the drainage flash tank of the body has no outward steam, and simultaneously, the two rows of spraying water holes with the included angles of 90 degrees on the spraying ring better cover the rising section of the whole steam, thereby achieving better cooling effect. According to the calculation that the air leakage per hour of one unit is 0.5t, the unit price of the desalted water is 20 yuan/ton, one heating period is 180 days, the amount of the desalted water which can be recovered is 2160t, and the cost is saved by 43200 yuan.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic view of the diameter of the spray hole of the water spray ring device
FIG. 3 is a schematic view of the included angle of the spray holes of the water spray ring device
FIG. 4 is a plan view of the water spray ring device
Detailed Description
As shown in fig. 1, a steam turbine main body drainage flash tank steam exhaust recovery device comprises a spray water device component and a condensed water recovery device component; the spray water device component comprises a heat supply network drainage main pipe 1, a spray water inlet pipeline 2 and a spray water inlet valve 3; the heat supply network drainage main pipe 1 is sequentially connected with a water inlet pipeline 2 and a water inlet valve 3; the condensed water recovery device component comprises a water spraying ring 7, a steam turbine body drainage flash tank 4, a two-stage water seal 5 and a low-level water tank 6; the water spraying ring 7 is welded with the steam turbine body drainage flash tank 4 through a water spraying pipeline in the steam turbine body drainage flash tank 4; the steam turbine body drainage flash tank 4 is welded with a two-stage water seal 5, the two-stage water seal 5 is connected with a low-level water tank 6, and the other end of the water inlet valve 3 is connected with the steam turbine body drainage flash tank 4 through a pipeline.
As shown in figure 2, the water spraying ring 7 is provided with water spraying holes with the diameter phi of 2 on the inner side and the outer side of the water ring. As shown in figure 3, the two rows of water spray holes form an included angle A for spraying water into the container, the included angle A is 90 degrees, and as shown in figure 4, the water spraying ring 7 is connected with the drainage flash tank 4 of the body. The drainage pipeline is provided with two stages of water seals 5, so that the waste caused by the removal of steam when no condensed water exists in the container is prevented, and the overpressure of the water tank caused by the fact that high-pressure steam enters the low-level water tank 6 due to overhigh drainage pressure in the starting process of the unit is also prevented.
In the operation process, the water inflow of the water spraying ring can be adjusted according to the steam discharge quantity of the steam discharge pipeline of the body dredging and expanding pipeline, so that all the discharged steam is ensured to be completely recycled, and the effects of energy conservation and emission reduction are achieved.
The spray water is taken from the drain of the heat supply network, and the drain of the heat supply network is condensed water of the heat supply network heat exchanger, so that the spray water belongs to a water source in a steam-water system, and the quality is ensured, so that the water rising phenomenon of the system can not occur.
Claims (2)
1. The utility model provides a hydrophobic flash vessel exhaust recovery unit of steam turbine body which characterized by: comprises a spray water device component and a condensed water recovery device component; the spray water device component comprises a heat supply network drainage main pipe (1), a spray water inlet pipeline (2) and a spray water inlet valve (3); the heat supply network drainage main pipe (1) is sequentially connected with the water inlet pipeline (2) and the water inlet valve (3); the condensed water recovery device component comprises a water spraying ring (7), a steam turbine body drainage flash tank (4), a two-stage water seal (5) and a low-level water tank (6); the water spraying ring (7) is fixedly connected with the steam turbine body drainage flash tank (4) in a welding way through a water spraying pipeline in the steam turbine body drainage flash tank (4); the steam turbine body drainage flash tank (4) is fixedly connected with the two-stage water seal (5) in a welding mode, the two-stage water seal (5) is connected with the low-level water tank (6), and the other end of the water inlet valve (3) is connected with the steam turbine body drainage flash tank (4) through a pipeline.
2. The steam turbine body drain flash tank steam exhaust recovery device of claim 1, wherein: the water sprinkling ring (7) is provided with two rows of included angles A: the diameter of 90 degrees is phi 2 water spraying holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121072150.5U CN215520982U (en) | 2021-05-19 | 2021-05-19 | Steam turbine body drainage flash tank exhaust steam recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121072150.5U CN215520982U (en) | 2021-05-19 | 2021-05-19 | Steam turbine body drainage flash tank exhaust steam recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215520982U true CN215520982U (en) | 2022-01-14 |
Family
ID=79804672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121072150.5U Active CN215520982U (en) | 2021-05-19 | 2021-05-19 | Steam turbine body drainage flash tank exhaust steam recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215520982U (en) |
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2021
- 2021-05-19 CN CN202121072150.5U patent/CN215520982U/en active Active
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