CN214840758U - Promote fail safe nature's industry steam supply desuperheating water system - Google Patents
Promote fail safe nature's industry steam supply desuperheating water system Download PDFInfo
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- CN214840758U CN214840758U CN202121227959.0U CN202121227959U CN214840758U CN 214840758 U CN214840758 U CN 214840758U CN 202121227959 U CN202121227959 U CN 202121227959U CN 214840758 U CN214840758 U CN 214840758U
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Abstract
The utility model discloses a promote fail safe's industry steam supply desuperheating water system, the utility model discloses supply the steam supply pipeline desuperheating water source with industry and adjust to condensate pump export condensate water, desuperheating water pipeline pressure-bearing greatly reduced need not to set up the relief pressure valve, only needs to set up two one-for-one little lift booster pumps that are equipped with, and the booster pump only uses when the low-load, and investment cost reduces by a wide margin. The pressure of condensed water at the outlet of the condensed water pump is far lower than the pressure of water supply, so that the operation safety and reliability are greatly improved; meanwhile, a bypass and a standby bypass are arranged beside the temperature reduction water pipeline, the regulation capability of the steam temperature is guaranteed, and the regulation precision is improved. The utility model discloses the transformation scope is little, investment cost is low, and operational reliability is high, does benefit to further popularization and application.
Description
Technical Field
The utility model belongs to coal-fired generating set combined heat and power heat supply field, concretely relates to promote fail safe nature's industry steam supply desuperheating water system.
Background
The large coal-fired thermal power generating unit is technically improved to bear industrial steam supply, and the position of a steam extraction port is determined according to the requirements of steam-using enterprises and steam-using parameters. When steam is actually supplied, the pressure and the temperature of steam at the position of a steam extraction opening are higher than those of steam required by a steam user, and a pressure reducing valve and a desuperheater are required to be installed on a steam supply pipeline. At present, the industrial steam supply temperature reduction device mostly adopts a technical route of water spraying temperature reduction, namely, part of high-pressure water supply is led out from an outlet of a water supply pump to an industrial steam supply pipeline to spray water for temperature reduction of steam. Because the outlet of the water supply pump supplies water as the highest-pressure working medium in the whole thermodynamic system of the unit, the pressure difference between the working medium and industrial steam supply is up to 15-25 MPa, and 4-5 pressure reducing valves are required to be arranged on the temperature reducing water pipeline.
Because the water supply pressure at the outlet of the water supply pump is highest in the whole thermodynamic system, the wall thickness of the temperature-reducing water pipeline using the water supply as an industrial steam supply temperature-reducing water source is larger, and the bearing capacity of the material is stronger, so the investment cost of the pipeline is high. Meanwhile, the pipeline is provided with a plurality of pressure reducing valves, and each valve bears larger pressure difference, so that the investment cost is further increased; the plurality of pressure reducing valves are arranged in series, once one pressure reducing valve fails, the temperature reducing water cannot be normally put into operation, and the operation reliability is low; in addition, the excessive setting of the pressure reducing valve causes the poor adjusting capability of the pressure reducing valve on the industrial steam supply temperature and the reduction of the adjusting precision.
Disclosure of Invention
The utility model aims to solve and adopt the water-feeding pump export to supply water when the industry supplies vapour pipeline desuperheating water source, pipeline and valve investment cost are high, operational reliability is low and the problem to steam temperature's regulating power variation is provided one kind and promotes fail safe nature's industry supplies vapour desuperheating water system, provides and supplies the industry to supply vapour pipeline desuperheating water source adjustment to condensate pump export condensate water.
In order to achieve the above object, the utility model discloses, including industry extraction of steam pipeline and water supply line, be provided with the desuperheating water pipeline between industry extraction of steam pipeline and water supply line, be provided with the main stop valve on the desuperheating water pipeline, with the parallelly connected bypass that is provided with desuperheating water pipeline and the reserve bypass of desuperheating water pipeline of main stop valve.
And an auxiliary booster pump and an auxiliary stop valve are arranged on a bypass of the temperature-reducing water pipeline.
And a standby booster pump and a standby stop valve are arranged on a standby bypass of the temperature-reducing water pipeline.
The steam extraction pipeline comprises a steam supply stop valve, a steam supply pressure reducing valve and a steam supply desuperheater;
one end of the steam supply stop valve is connected with the industrial steam extraction, the other end of the steam supply stop valve is connected with the steam supply pressure reducing valve, the steam supply pressure reducing valve is connected with the steam supply desuperheater, and the steam supply desuperheater is connected with the desuperheating water pipeline and supplies steam to the outside.
The outlet of the temperature-reducing water pipeline is connected with a steam supply temperature reducer.
The water supply pipeline comprises a condenser, a condensate pump, a low-pressure heater, a deaerator and a water supply pump;
the condenser is connected with a condensate pump, the condensate pump is connected with a temperature-reducing water pipeline and a low-pressure heater, the low-pressure heater is connected with a deaerator, and the deaerator is connected with a water supply pump.
The inlet of the temperature-reducing water pipeline is connected with the outlet of the condensate pump.
Compared with the prior art, the utility model discloses with industry steam supply pipeline desuperheating water source adjustment to condensate pump export condensate water, desuperheating water pipeline pressure-bearing greatly reduced need not to set up the relief pressure valve, only needs to set up two one-for-one little lift booster pumps that are equipped with, and the booster pump only uses when the low-load, and investment cost reduces by a wide margin. The pressure of condensed water at the outlet of the condensed water pump is far lower than the pressure of water supply, so that the operation safety and reliability are greatly improved; meanwhile, a bypass and a standby bypass are arranged beside the temperature reduction water pipeline, the regulation capability of the steam temperature is guaranteed, and the regulation precision is improved. The utility model discloses the transformation scope is little, investment cost is low, and operational reliability is high, does benefit to further popularization and application.
Drawings
FIG. 1 is a system configuration diagram of the present invention;
the system comprises a condenser, a condensate pump, a low-pressure heater, a deaerator, a water supply pump, a steam supply stop valve, a steam supply pressure reducing valve, a steam supply desuperheater, a main stop valve, an auxiliary pressure boosting pump, an auxiliary stop valve, a standby pressure boosting pump, a standby stop valve, a low-pressure heater, a deaerator, a water supply pump, a steam supply desuperheater, a steam supply pressure reducing valve, a steam supply desuperheater, a main stop valve, a steam supply pressure boosting pump, a steam supply pressure reducing valve, a steam supply pressure reducing valve, a low pressure water pipe and a low pressure reducing valve, a low pressure water pipe, wherein 1, a low pressure water pipe, a low pressure reducing valve, a low pressure water pipe, a low pressure valve, a low pressure water pipe and a low pressure regulating valve, and a low pressure regulating valve, wherein the low pressure regulating valve, and a low pressure regulating valve, wherein the low.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, the utility model discloses an industry steam extraction pipeline and water supply line are provided with desuperheating water pipeline 14 between industry steam extraction pipeline and water supply line, are provided with main stop valve 9 on the desuperheating water pipeline 14, and the parallelly connected bypass that is provided with desuperheating water pipeline 14 and desuperheating water pipeline 14 with main stop valve 9.
An auxiliary booster pump 10 and an auxiliary stop valve 11 are provided on a bypass of the temperature-reducing water pipe 14. A backup booster pump 12 and a backup stop valve 13 are provided on a backup bypass of the temperature-reducing water pipe 14. The steam extraction pipeline comprises a steam supply stop valve 6, a steam supply pressure reducing valve 7 and a steam supply desuperheater 8; one end of the steam supply stop valve 6 is connected with the industrial steam extraction, the other end is connected with the steam supply pressure reducing valve 7, the steam supply pressure reducing valve 7 is connected with the steam supply desuperheater 8, and the steam supply desuperheater 8 is connected with the desuperheating water pipeline 14 and supplies steam to the outside. The outlet of the desuperheating water pipeline 14 is connected with the steam supply desuperheater 8.
The water supply pipeline comprises a condenser 1, a condensate pump 2, a low-pressure heater 3, a deaerator 4 and a water supply pump 5; condenser 1 is connected condensate pump 2, and condensate pump 2 is connected desuperheating water pipe 14 and low pressure feed water heater 3, and low pressure feed water heater 3 is connected oxygen-eliminating device 4, and water-feeding pump 5 is connected to oxygen-eliminating device 4. The inlet of the temperature-reducing water pipe 14 is connected with the outlet of the condensate pump 2.
The utility model discloses an operating method, including following step:
after the condensed water at the outlet of the condenser 1 is boosted by the condensed water pump 2, the condensed water sequentially passes through the low-pressure heater 3, the deaerator 4 and the water feed pump 5, enters the high-pressure heater and further rises in temperature, and then enters the boiler.
When the load is high, the main stop valve 9 is opened, the auxiliary stop valve 11 and the standby stop valve 13 are closed, and the temperature-reducing water enters the industrial steam supply pipeline from the main path;
when the load is low, the auxiliary stop valve 11 is opened, the main stop valve 9 and the standby stop valve 13 are closed, and the desuperheating water enters the industrial steam supply pipeline through a bypass;
when the auxiliary booster pump 10 breaks down, the standby stop valve 13 is opened, the main stop valve 9 and the auxiliary stop valve 11 are closed, and the desuperheating water enters the industrial steam supply pipeline through the standby bypass.
Claims (7)
1. The utility model provides a promote fail safe's industry steam supply desuperheating water system, its characterized in that, includes industry steam extraction pipeline and water supply line, is provided with desuperheating water pipeline (14) between industry steam extraction pipeline and water supply line, is provided with on desuperheating water pipeline (14) main stop valve (9), is provided with the bypass of desuperheating water pipeline (14) and the reserve bypass of desuperheating water pipeline (14) with main stop valve (9) parallelly connected.
2. The industrial steam and water supply and desuperheating system with improved safety and reliability as claimed in claim 1, wherein the auxiliary booster pump (10) and the auxiliary stop valve (11) are provided on the bypass of the desuperheating water pipeline (14).
3. The industrial steam and water supply and desuperheating system with improved safety and reliability as claimed in claim 1, wherein a backup booster pump (12) and a backup stop valve (13) are provided on a backup bypass of the desuperheating water pipeline (14).
4. The industrial steam supply and temperature reduction water system for improving the safety and the reliability according to claim 1, wherein the steam extraction pipeline comprises a steam supply stop valve (6), a steam supply pressure reducing valve (7) and a steam supply desuperheater (8);
one end of the steam supply stop valve (6) is connected with the industrial steam extraction, the other end of the steam supply stop valve is connected with the steam supply pressure reducing valve (7), the steam supply pressure reducing valve (7) is connected with the steam supply desuperheater (8), and the steam supply desuperheater (8) is connected with the desuperheating water pipeline (14) and supplies steam to the outside.
5. An industrial steam and water supply system with improved safety and reliability as claimed in claim 4, wherein the outlet of the temperature reducing water pipeline (14) is connected with the steam supply temperature reducer (8).
6. The industrial steam supply and water reducing system for improving the safety and reliability is characterized in that a water supply pipeline comprises a condenser (1), a condensate pump (2), a low-pressure heater (3), a deaerator (4) and a water supply pump (5);
condensate pump (2) is connected in condenser (1), and desuperheating water pipeline (14) and low pressure feed water heater (3) are connected in condensate pump (2), and oxygen-eliminating device (4) is connected in low pressure feed water heater (3), and feed water pump (5) is connected in oxygen-eliminating device (4).
7. The industrial steam and water supply and temperature reduction system with improved safety and reliability according to claim 6, wherein an inlet of the temperature reduction water pipeline (14) is connected with an outlet of the condensate pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121227959.0U CN214840758U (en) | 2021-06-02 | 2021-06-02 | Promote fail safe nature's industry steam supply desuperheating water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121227959.0U CN214840758U (en) | 2021-06-02 | 2021-06-02 | Promote fail safe nature's industry steam supply desuperheating water system |
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| Publication Number | Publication Date |
|---|---|
| CN214840758U true CN214840758U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121227959.0U Active CN214840758U (en) | 2021-06-02 | 2021-06-02 | Promote fail safe nature's industry steam supply desuperheating water system |
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| CN (1) | CN214840758U (en) |
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2021
- 2021-06-02 CN CN202121227959.0U patent/CN214840758U/en active Active
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