CN214582594U - Waste heat recovery vacuum system of steam extractor - Google Patents
Waste heat recovery vacuum system of steam extractor Download PDFInfo
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- CN214582594U CN214582594U CN202120774097.7U CN202120774097U CN214582594U CN 214582594 U CN214582594 U CN 214582594U CN 202120774097 U CN202120774097 U CN 202120774097U CN 214582594 U CN214582594 U CN 214582594U
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Abstract
The utility model discloses a steam extractor waste heat recovery vacuum system, including the steam turbine, steam turbine one end is equipped with the exhaust apparatus, the exhaust apparatus with the steam turbine is linked together, the exhaust apparatus has the hot-well, exhaust apparatus one side is equipped with the water jet steam extractor, the water jet steam extractor with be equipped with water jet steam extractor sunction inlet pipeline between the exhaust apparatus, just the water jet steam extractor passes through water jet steam extractor sunction inlet pipeline with the exhaust apparatus is linked together, inside water jet steam extractor sunction inlet pipeline isolation valve that is equipped with of water jet steam extractor sunction inlet pipeline, water jet steam extractor one end is equipped with water jet steam extractor power supply pipeline. Has the advantages that: the system greatly improves the efficiency of the unit, reduces the coal consumption of power generation of a power plant, maintains the normal vacuum of the unit, overcomes the technical defect of the water ring vacuum pump, and solves the problem that the vacuum of the unit cannot be maintained when the environmental temperature is high.
Description
Technical Field
The utility model relates to a waste heat recovery field particularly, relates to a steam extractor waste heat recovery vacuum system.
Background
At present, in the unit of the thermal power industry in China, a large amount of energy is consumed every day to enable the unit to normally operate, so that normal power generation can be guaranteed. In the whole unit operation process, residual heat in a plurality of devices cannot be recycled well and is wasted uselessly, and other devices need to consume energy to obtain heat and power so as to maintain normal operation.
The power plant usually adopts the water ring vacuum pump to come as vacuum pumping system, connect the condenser through the female pipe connection of bleeding, come the gas in the suction condenser, in order to maintain the vacuum degree of condenser, the temperature of water ring vacuum pump working solution receives the influence of cooling water (circulating water or closed water), the cooling water temperature receives weather conditions influence greatly, temperature variation is great, especially summer, the circulating water temperature exceeds thirty degrees, in addition certain heat transfer difference in temperature, the working solution temperature will exceed forty degrees, vacuum pump working solution vaporizes in a large number this moment, cause vacuum pump blade cavitation and produce the high noise, the air exhaust ability sharply descends, can't maintain the normal vacuum of working of condenser. The cavitation causes blade cracks and even breaks, and the blade needs to be maintained every year, so that the safety and the economical efficiency of unit operation are seriously influenced.
The deaerator is a hybrid heater that removes oxygen and other non-condensable gases from boiler feed water. The oxygen removing method comprises two modes of chemical oxygen removing and thermal oxygen removing, and most power plants adopt thermal oxygen removing. That is, the feed water is heated to boiling by the steam to precipitate oxygen, the precipitated oxygen is directly discharged to the atmosphere, and part of the steam is also directly discharged.
However, the above system has the following problems:
(1) and the water-ring vacuum pump is driven by a motor, so that the service power consumption is increased. The water ring vacuum pump needs to overhaul an impeller, and replace a bearing and a sealing element every year.
(2) The water ring vacuum pump is sealed by water, is influenced by the environmental temperature, and particularly in summer, the air pumping capacity is sharply reduced, so that the normal working vacuum of the air cooling island cannot be maintained.
(3) When the deaerator deaerates, the heat of the discharged steam and the working medium are directly lost.
(4) The gas in the unit vacuum pumping mother pipe has a large part of dead steam besides dry air and other non-condensable gases, and the water ring vacuum pump is adopted for vacuum pumping, so that the waste of heat of the part of dead steam and working media is caused.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steam extraction device waste heat recovery vacuum system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a steam extractor waste heat recovery vacuum system comprises a steam turbine, wherein one end of the steam turbine is provided with a steam exhaust device, the steam exhaust device is communicated with the steam turbine, a hot well is arranged below the steam exhaust device, one side of the steam exhaust device is provided with a water jet steam extractor, a water jet steam extractor suction inlet pipeline is arranged between the water jet steam extractor and the steam exhaust device, the water jet steam extractor is communicated with the steam exhaust device through the water jet steam extractor suction inlet pipeline, a water jet steam extractor suction inlet pipeline isolation valve is arranged inside the water jet steam extractor suction inlet pipeline, one end of the water jet steam extractor is provided with a water jet steam extractor power source pipeline, a water jet steam extractor power source pipeline isolation valve is arranged inside the water jet steam extractor power source pipeline, a steam-water separation heat exchanger is arranged at one side of the water jet steam extractor, and a water jet steam extractor discharge outlet pipeline is arranged between the steam separation heat exchanger and the water jet steam extractor, the steam-water separation heat exchanger is communicated with the water-injection steam extractor through a water-injection steam extractor outlet pipeline, a deaerator is arranged on one side of the steam-water separation heat exchanger, a deaerator steam exhaust eduction pipe pipeline is arranged between the deaerator and the steam-water separation heat exchanger, the deaerator is communicated with the steam-water separation heat exchanger through the deaerator steam exhaust eduction pipe pipeline, a deaerator steam exhaust eduction pipe pipeline isolation valve is arranged inside the deaerator steam exhaust eduction pipe pipeline, a unit vacuum pump is arranged below the deaerator, a unit vacuum pumping system main pipe pipeline is arranged on one side of the unit vacuum pump, and the unit vacuum pump is communicated with the steam exhaust device through the unit vacuum pumping system main pipe pipeline.
Furthermore, one end of the steam-water separation heat exchanger is provided with a deaerator steam exhaust pipeline.
Furthermore, a deaerator steam exhaust pipeline isolating valve is arranged inside the deaerator steam exhaust pipeline.
Furthermore, a water outlet pipeline of the steam-water separation heat exchanger is arranged at the bottom end of the steam-water separation heat exchanger, and the steam-water separation heat exchanger is communicated with the hot well through the water outlet pipeline of the steam-water separation heat exchanger.
Furthermore, a steam-water separation heat exchanger water outlet pipeline drain valve is arranged inside the steam-water separation heat exchanger water outlet pipeline.
Furthermore, the power source of the water-jet steam extractor adopts unit condensed water.
Furthermore, a steam-water separation heat exchanger atmospheric air exhaust pipeline is arranged at the top end of the steam-water separation heat exchanger.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the steam-injection steam extractor is used for extracting steam in a mother pipe of a vacuum-pumping system of the unit by taking unit condensed water as a power source, mixed media enter the steam-water separation heat exchanger to heat the condensed water, the water-injection steam extractor is adopted by the whole system, and when the system is put into operation, the original water-ring vacuum pump of the unit is stopped without service power. The waste heat is recovered, the vacuum degree of the unit is maintained and improved, and the coal consumption of power generation is reduced.
(2) The whole system adopts the water injection steam extractor, has no rotating part, has no maintenance in later operation, greatly improves the unit efficiency, reduces the power plant power generation coal consumption, maintains the normal vacuum of the unit, overcomes the technical defect of a water ring vacuum pump, and solves the problem that the vacuum of the unit cannot be maintained when the environmental temperature is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a main structure of a waste heat recovery vacuum system of a steam extractor according to an embodiment of the present invention;
reference numerals:
1. a steam turbine; 2. a steam exhaust device; 3. a hot well; 4. a deaerator; 5. a water jet steam extractor; 6. a steam-water separation heat exchanger; 7. a unit vacuum pump; 8. a water jet steam extractor power source pipeline; 9. a power source pipeline isolating valve of the water jet steam extractor; 10. a water jet steam extractor suction inlet pipeline; 11. the pipeline isolation valve of the water jet steam extractor suction inlet; 12. a main pipe line of a unit vacuumizing system; 13. a water jet steam extractor discharge port pipeline; 14. a deaerator exhaust steam outlet pipe pipeline; 15. a deaerator exhaust steam outlet pipe pipeline isolation valve; 16. a deaerator exhaust line; 17. an exhaust pipeline isolation valve of the deaerator; 18. a water outlet pipeline of the steam-water separation heat exchanger; 19. a drain valve of a water outlet pipeline of the steam-water separation heat exchanger; 20. and the steam-water separation heat exchanger is used for exhausting the atmosphere.
Detailed Description
The following, with reference to the drawings and the detailed description, further description of the present invention is made:
the first embodiment is as follows:
referring to fig. 1, a vacuum system for recovering waste heat of a steam extractor according to an embodiment of the present invention includes a steam turbine 1, and is characterized in that an exhaust device 2 is disposed at one end of the steam turbine 1, the exhaust device 2 is communicated with the steam turbine 1, a hot well 3 is disposed below the exhaust device 2, a water jet steam extractor 5 is disposed at one side of the exhaust device 2, a water jet steam extractor suction inlet pipeline 10 is disposed between the water jet steam extractor 5 and the exhaust device 2, the water jet steam extractor 5 is communicated with the exhaust device 2 through the water jet steam extractor suction inlet pipeline 10, a water jet steam extractor suction inlet pipeline isolation valve 11 is disposed inside the water jet steam extractor suction inlet pipeline 10, a water jet steam extractor power source pipeline 8 is disposed at one end of the water jet steam extractor 5, a water jet steam extractor power source pipeline isolation valve 9 is disposed inside the water jet steam extractor power source pipeline 8, a steam-water separation heat exchanger 6 is arranged on one side of the water injection steam extractor 5, a water injection steam extractor discharge port pipeline 13 is arranged between the steam-water separation heat exchanger 6 and the water injection steam extractor 5, the steam-water separation heat exchanger 6 is communicated with the water injection steam extractor 5 through the water injection steam extractor discharge port pipeline 13, a deaerator 4 is arranged on one side of the steam-water separation heat exchanger 6, a deaerator steam exhaust outlet pipeline 14 is arranged between the deaerator 4 and the steam-water separation heat exchanger 6, the deaerator 4 is communicated with the steam-water separation heat exchanger 6 through the deaerator steam exhaust outlet pipeline 14, a deaerator steam exhaust outlet pipeline isolation valve 15 is arranged inside the deaerator steam exhaust outlet pipeline 14, a unit vacuum pump 7 is arranged below the deaerator 4, a unit vacuum pumping system main pipe pipeline 12 is arranged on one side of the unit vacuum pump 7, and the unit vacuum pump 7 is connected with the steam exhaust device 2 through the unit vacuum system main pipe 12 The steam-water separation heat exchanger is characterized in that a deaerator steam exhaust pipeline 16 is arranged at one end of the steam-water separation heat exchanger 6, a deaerator steam exhaust pipeline isolation valve 17 is arranged inside the deaerator steam exhaust pipeline 16, a steam-water separation heat exchanger water outlet pipeline 18 is arranged at the bottom end of the steam-water separation heat exchanger 6, the steam-water separation heat exchanger 6 passes through the steam-water separation heat exchanger water outlet pipeline 18 and the hot well 3 are communicated, a steam-water separation heat exchanger water outlet pipeline drain valve 19 is arranged inside the steam-water separation heat exchanger water outlet pipeline 18, unit condensed water is adopted as a power source of the water jet steam extractor 5, and a steam-water separation heat exchanger steam exhaust pipeline 20 is arranged at the top end of the steam-water separation heat exchanger 6.
Through the above technical scheme of the utility model, the utility model discloses a steam extractor waste heat recovery vacuum system, it is one kind and realizes the system that heat energy and working medium retrieved through unit vacuum system. The steam-water mixed medium is discharged into a steam-water separation heat exchanger 6, and simultaneously, the steam discharged by a deaerator 4 is introduced into the steam-water separation heat exchanger 6 for heat exchange. The steam brought out when the deaerator 4 deaerates and the working medium and the heat of the exhaust steam in the vacuum pumping main pipe of the unit are recovered, and the temperature of condensed water is improved, so that the efficiency of the unit is improved, the coal consumption of power plant power generation is reduced, the normal vacuum of the unit is maintained, the technical defect of a water ring vacuum pump is overcome, and the problem that the vacuum of the unit cannot be maintained when the environment temperature is high is solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A steam extractor waste heat recovery vacuum system comprises a steam turbine (1) and is characterized in that one end of the steam turbine (1) is provided with a steam exhaust device (2), the steam exhaust device (2) is communicated with the steam turbine (1), a hot well (3) is arranged below the steam exhaust device (2), one side of the steam exhaust device (2) is provided with a water jet steam extractor (5), a water jet steam extractor suction inlet pipeline (10) is arranged between the water jet steam extractor (5) and the steam exhaust device (2), the water jet steam extractor (5) is communicated with the steam exhaust device (2) through the water jet steam extractor suction inlet pipeline (10), a water jet steam extractor suction inlet pipeline isolation valve (11) is arranged inside the water jet steam extractor suction inlet pipeline (10), one end of the water jet steam extractor (5) is provided with a water jet steam extractor power source pipeline (8), a steam jet steam extractor power source pipeline isolation valve (9) is arranged inside the water jet steam extractor power source pipeline (8), a steam-water separation heat exchanger (6) is arranged on one side of the water jet steam extractor (5), a steam-water separation steam extractor discharge port pipeline (13) is arranged between the steam-water separation heat exchanger (6) and the water jet steam extractor (5), the steam-water separation heat exchanger (6) is communicated with the water jet steam extractor (5) through the steam-water injection steam extractor discharge port pipeline (13), a deaerator (4) is arranged on one side of the steam-water separation heat exchanger (6), a deaerator steam exhaust lead-out pipeline (14) is arranged between the deaerator (4) and the steam-water separation heat exchanger (6), the deaerator (4) is communicated with the steam-water separation heat exchanger (6) through the deaerator steam exhaust lead-out pipeline (14), a deaerator steam exhaust lead-out pipeline isolation valve (15) is arranged inside the deaerator steam exhaust lead-out pipeline (14), the deaerator (4) is provided with a unit vacuum pump (7), one side of the unit vacuum pump (7) is provided with a unit vacuumizing system main pipe line (12), and the unit vacuum pump (7) is communicated with the steam exhaust device (2) through the unit vacuumizing system main pipe line (12).
2. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 1, wherein one end of the steam-water separation heat exchanger (6) is provided with a deaerator steam exhaust pipeline (16).
3. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 2, wherein the steam exhaust pipeline (16) of the deaerator is internally provided with a deaerator steam exhaust pipeline isolation valve (17).
4. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 2, wherein a steam-water separation heat exchanger water outlet pipeline (18) is arranged at the bottom end of the steam-water separation heat exchanger (6), and the steam-water separation heat exchanger (6) is communicated with the hot well (3) through the steam-water separation heat exchanger water outlet pipeline (18).
5. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 4, wherein a steam-water separation heat exchanger drain outlet pipeline drain valve (19) is arranged in the steam-water separation heat exchanger drain outlet pipeline (18).
6. The vacuum system for recovering waste heat of a steam extractor as claimed in claim 1, wherein the power source of the water jet steam extractor (5) is set condensed water.
7. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 4, wherein the top end of the steam-water separation heat exchanger (6) is provided with a steam-water separation heat exchanger atmospheric air discharge pipeline (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120774097.7U CN214582594U (en) | 2021-04-15 | 2021-04-15 | Waste heat recovery vacuum system of steam extractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120774097.7U CN214582594U (en) | 2021-04-15 | 2021-04-15 | Waste heat recovery vacuum system of steam extractor |
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| Publication Number | Publication Date |
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| CN214582594U true CN214582594U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120774097.7U Active CN214582594U (en) | 2021-04-15 | 2021-04-15 | Waste heat recovery vacuum system of steam extractor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902143A (en) * | 2021-04-15 | 2021-06-04 | 恒坤聚能(北京)科技有限公司 | Waste heat recovery vacuum system of steam extractor |
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2021
- 2021-04-15 CN CN202120774097.7U patent/CN214582594U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902143A (en) * | 2021-04-15 | 2021-06-04 | 恒坤聚能(北京)科技有限公司 | Waste heat recovery vacuum system of steam extractor |
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