CN213392290U - Water-cooling and air-cooling combined type steam turbine condensing system - Google Patents
Water-cooling and air-cooling combined type steam turbine condensing system Download PDFInfo
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- CN213392290U CN213392290U CN202022614394.3U CN202022614394U CN213392290U CN 213392290 U CN213392290 U CN 213392290U CN 202022614394 U CN202022614394 U CN 202022614394U CN 213392290 U CN213392290 U CN 213392290U
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Abstract
A water-cooling and air-cooling combined type steam turbine condensing system belongs to the technical field of steam turbine condensing systems, the steam turbine in the condensing system is connected with the generator, the steam outlet of the steam turbine is respectively connected with the air cooling unit and the water cooling unit through a three-way steam exhaust pipeline, two outlets of the three-way steam exhaust pipeline are respectively provided with a vacuum gate valve, cooling water outlets of the air cooling unit and the water cooling unit are respectively connected with the condensed water recovery component through a condensed water pipe, the condensed water recovery component is connected with the steam inlet of the steam turbine through a steam generation component, the condensing system integrates the advantages and the disadvantages of a water cooling unit and an air cooling unit, adopts an air cooling mode for condensation in winter in water-deficient areas, the water cooling or the water cooling and air cooling combined condensation mode is adopted for condensation in summer, so that the effect of saving industrial water is achieved, and the problem of reduction of the operation rate of the steam turbine caused by the heat of the natural steam in summer is solved.
Description
Technical Field
The utility model relates to a steam turbine condensing system technical field especially relates to a water-cooling and air cooling combined type steam turbine condensing system.
Background
The waste heat power generation project of the cement kiln in the early period of the countries such as Pakistan and India adopts a water cooling condensation mode, the generated energy is high, and good economic benefit is generated, along with the development of the industries of the countries, industrial water is in shortage, and corresponding policies issued by governments increase penalties for industrial water, so that the cost of a water cooling condensation system is greatly increased, wherein the water price for labor saving of the Pakistan part reaches 3U per ton, part of customers begin to consider an air cooling transformation scheme to change water cooling into air cooling, the scheme can be good in winter, the temperature of the areas such as Pakistan in summer is high, the maximum steam temperature reaches 45 ℃, the air cooling system cannot meet the requirement of water condensation steam turbine back pressure, adverse effect is generated on the safe operation of the steam turbine, the phenomenon that part of waste heat power generation is stopped occurs, the operation rate of waste heat power generation is influenced, and.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a water-cooling and air cooling combined type steam turbine condensing system has synthesized the excellent shortcoming of water-cooling unit and air cooling unit, in the water shortage area, adopts the mode condensation of air cooling winter, adopts water-cooling or the compound condensation mode condensation of water-cooling and air cooling in summer, has both reached the effect of practicing thrift industrial water, has solved the problem that summer causes the steam turbine rate of operation to reduce because of the natural vapor heat again.
In order to achieve the above object, the present invention provides a technical solution for solving the technical problem: water-cooling and air cooling combined type steam turbine condensing system retrieves subassembly and steam generation subassembly including steam turbine, generator, air cooling unit, water chilling unit, condensate water, the steam turbine links to each other with the generator, the steam vent of steam turbine links to each other with air cooling unit and water chilling unit respectively through tee bend exhaust steam line, two exits of tee bend exhaust steam line are provided with the vacuum slide valve respectively, the cooling water export of air cooling unit and water chilling unit respectively through condensate pipe with the condensate water retrieves the subassembly and links to each other, the condensate water retrieve the subassembly through steam generation subassembly with the steam inlet of steam turbine links to each other.
Further, steam turbine and generator setting are in the power generation factory building, air cooling unit and water cooling unit set up outside the power generation factory building.
Furthermore, the air cooling unit comprises a plurality of air condenser which are connected with one outlet of the three-way steam exhaust pipeline in parallel, the water cooling unit comprises a water condenser, a cooling tower and a circulating water pump, the water condenser is connected with the other outlet of the three-way steam exhaust pipeline, and the water condenser is connected with the cooling tower through the circulating water pump.
Further, cooling water outlets of the air condenser and the water condenser are connected with the condensed water recovery assembly through condensed water pipes.
Furthermore, the steam discharge port of steam turbine includes two, one steam discharge port with the import of tee bend exhaust pipe links to each other, another steam discharge port through steam discharge branch pipe with the condensate water recovery subassembly links to each other, steam discharge branch pipe's downside is connected with the drainage pump.
Furthermore, the condensed water recovery assembly comprises a condensed water recovery box, a hot water well and a condensed water pump, the drain pump is connected with the hot water well, the hot water well is connected with a water inlet of the condensed water recovery box through the condensed water pump, a water inlet of the condensed water recovery box is also connected with raw water treatment equipment, and a water outlet of the condensed water recovery box is connected with a steam inlet of the steam turbine through the steam generation assembly.
Further, the steam generation assembly comprises a feed water pump and a steam generator, the condensed water recovery tank is connected with the steam generator through the feed water pump, and the steam generator is connected with a steam inlet of the steam turbine through a boiler.
The utility model has the advantages that:
1. the utility model is connected with the air cooling unit and the water cooling unit through the three-way steam exhaust pipeline at the steam exhaust port of the steam turbine respectively, when in winter in the water shortage area, the vacuum gate valve at the outlet of the three-way steam exhaust pipeline connected with the water cooling unit is closed, the vacuum gate valve at the outlet of the three-way steam exhaust pipeline connected with the air cooling unit is opened, and the steam in the steam turbine is condensed in an air cooling mode; in summer, open the vacuum gate valve in the exit of the tee bend exhaust pipe who links to each other with the water cooling unit, close the vacuum gate valve in the exit of the tee bend exhaust pipe who links to each other with the air cooling unit, adopt the water-cooled mode to condense steam in the turbine, or open two vacuum gate valves, adopt the water-cooled and air-cooled compound condensation mode to condense steam in the turbine, the condensate water after the condensation is retrieved to the condensate water and is retrieved in the subassembly, the rethread steam takes place the steam inlet that gets into the steam turbine after the subassembly produces superheated steam, promote the steam turbine and rotate and drive the generator electricity generation, this kind of compound condensation mode has both reached the effect of saving industrial water, solved the problem that the steam turbine operating rate reduces because of the heat of the sky in summer again.
2. In addition, the lower side of the steam exhaust branch pipe connected with one steam exhaust port of the steam turbine is connected with the hot water well through the drainage pump, and the residual condensed water in the steam exhaust branch pipe can be drained and then conveyed to the hot water well for storage, so that the recovery rate of the heat generated by the steam turbine is further improved.
In conclusion, the condensing system integrates the advantages and the disadvantages of a water cooling unit and an air cooling unit, in water-deficient areas, the air cooling mode is adopted for condensation in winter, and in summer, the water cooling or the water cooling and air cooling combined condensation mode is adopted for condensation, so that the effect of saving industrial water is achieved, and the problem of reduction of the operation rate of the steam turbine caused by the heat of the natural steam in summer is solved.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 is a schematic structural view of the present invention;
the labels in the above figures are: 1. the system comprises a steam turbine, 2. a generator, 3. an air cooling unit, 31. an air condenser, 4. a water cooling unit, 41. a water condenser, 42. a cooling tower, 43. a circulating water pump, 5. a three-way steam exhaust pipeline, 6. a vacuum gate valve, 7. a steam exhaust branch pipe, 8. a drain pump, 9. a condensed water recovery tank, 10. a hot water well, 11. a condensed water pump, 12. raw water treatment equipment, 13. a water feeding pump, 14. a steam generator and 15. a boiler.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses specific embodiment does: as shown in fig. 1, a water-cooling and air-cooling combined type steam turbine condensing system, including steam turbine 1, generator 2, air cooling unit 3, water cooling unit 4, condensate water recovery subassembly and steam generation subassembly, steam turbine 1 links to each other with generator 2, steam turbine 1 rotates and drives generator 2 operation and generate electricity, the steam extraction mouth of steam turbine 1 passes through tee bend exhaust steam pipe 5 and links to each other with air cooling unit 3 and water cooling unit 4 respectively, two exits of tee bend exhaust steam pipe 5 are provided with vacuum gate valve 6 respectively for controlling the air cooling of steam turbine 1 and the water-cooled exhaust steam passageway, the cooling water export of air cooling unit 3 and water cooling unit 4 links to each other with condensate water recovery subassembly through the condensate pipe respectively, condensate water recovery subassembly passes through the steam generation subassembly and links to each other with the steam inlet of steam turbine 1. In winter in the water-deficient area, closing the vacuum gate valve 6 at the outlet of the three-way steam exhaust pipeline 5 connected with the water cooling unit 4, opening the vacuum gate valve 6 at the outlet of the three-way steam exhaust pipeline 5 connected with the air cooling unit 3, and condensing the steam in the steam turbine 1 in an air cooling mode; in summer, the vacuum gate valve 6 at the outlet of the three-way steam exhaust pipeline 5 connected with the water cooling unit 4 is opened, the vacuum gate valve 6 at the outlet of the three-way steam exhaust pipeline 5 connected with the air cooling unit 3 is closed, the steam in the steam turbine 1 is condensed in a water cooling mode, or the two vacuum gate valves 6 are opened, the steam in the steam turbine 1 is condensed in a water cooling and air cooling combined condensation mode, condensed water after condensation is recovered into a condensed water recovery component, superheated steam is generated by a steam generation component and then enters the steam inlet of the steam turbine 1, the steam turbine 1 is pushed to rotate and the generator 2 is driven to generate electricity, the combined condensation mode achieves the effect of saving industrial water, and the problem that the running rate of the steam turbine is reduced due to the heat of the steam in summer is solved.
Specifically, the steam turbine 1 and the generator 2 are arranged in a power generation plant, the air cooling unit 3 and the water cooling unit 4 are arranged outside the power generation plant, and in winter, the air cooling unit 3 can fully utilize outdoor low temperature to condense steam.
Specifically, the steam exhaust ports of the steam turbine 1 comprise two, one steam exhaust port is connected with an inlet of a three-way steam exhaust pipeline 5, and two outlets of the three-way steam exhaust pipeline 5 are respectively connected with the air cooling unit 3 and the water cooling unit 4 through steam exhaust connecting pipes; the air cooling unit 3 comprises a plurality of air condensers 31 which are mutually connected in parallel with one outlet of the three-way steam exhaust pipeline 5, the design of the air condensers 31 is required to meet the design requirement of low back pressure of the steam turbine, and a fan in the air condensers 31 adopts a frequency converter to adjust and control the rotating speed and start and stop, so that the condensation under different steam loads and environmental temperatures can be met; the water cooling unit 4 comprises a water condenser 41, a cooling tower 42 and a circulating water pump 43, the water condenser 41 is connected with the other outlet of the three-way steam exhaust pipeline 5, and the water condenser 41 is connected with the cooling tower 42 through the circulating water pump 43, so that circulating water cooling is realized; the cooling water outlets of the air condenser 31 and the water condenser 41 are connected to a condensed water recovery unit through condensed water pipes for recovering condensed water.
Specifically, another steam extraction mouth of steam turbine 1 links to each other with the condensate recovery subassembly through steam extraction branch pipe 7, and the downside of steam extraction branch pipe 7 is connected with drain pump 8, can carry the condensate recovery subassembly to retrieve and store after remaining condensate water in steam extraction branch pipe 7 is hydrophobic, has further improved the thermal rate of recovery of steam turbine production.
Specifically, the condensed water recovery assembly comprises a condensed water recovery box 9, a hot water well 10 and a condensed water pump 11, a drain pump 8 is connected with the hot water well 10, the hot water well 10 is connected with a water inlet of the condensed water recovery box 9 through the condensed water pump 11, the condensed water in the hot water well 10 is sucked out by the condensed water pump 11, the condensed water is conveyed to the condensed water recovery box 9 after being boosted through equipment such as a low-pressure heater and the like, a deaerator is arranged in the condensed water recovery box 9, the water inlet of the condensed water recovery box 9 is also connected with raw water treatment equipment 12, the raw water treatment equipment 12 supplies water into the condensed water recovery box 9 after softening the raw water input therein, the deaerator can remove oxygen steam and other non-condensed steam in the water, the quality of the water is ensured, a water outlet of the condensed water recovery box 9 is connected with a steam inlet of the steam turbine 1 through a steam generation assembly and is used for heating and evaporating the water in the condensed water recovery box 9 to form superheated steam to be conveyed to the steam inlet of the steam, providing the turbine 1 with driving power.
Specifically, the steam generating assembly comprises a water feeding pump 13 and a steam generator 14, the condensed water recovery tank 9 is connected with the steam generator 14 through the water feeding pump 13 and is used for heating the water in the condensed water recovery tank 9 under high pressure, and the steam in the steam generator 14 is reheated by a boiler 15 to form superheated steam which is delivered to the steam inlet of the steam turbine 1 to provide driving force for the steam turbine 1, so that the generator 2 can continuously generate electricity.
The working principle of the condensing system is as follows: firstly, controlling the action of a corresponding vacuum gate valve 6 according to needs, condensing most of steam discharged from one steam outlet in the operation process of a steam turbine 1 by adopting a condensation mode combining air cooling, water cooling and water air cooling, enabling condensed water generated after condensation to automatically flow into a hot water well 10 through a condensed water pipe for storage, enabling a small part of steam discharged from the other steam outlet of the steam turbine 1 to be attached to the inner wall of the hot water well to form condensed water after passing through a steam discharge branch pipe 7, and conveying the condensed water into the hot water well 10 after dredging the condensed water by a drain pump 8; then, the condensate pump 11 sucks out the condensate in the hot water well 10, the condensate flows through a low-pressure heater and other equipment after being boosted and is conveyed to the condensate recovery box 9, a deaerator is arranged in the condensate recovery box 9, meanwhile, the raw water treatment equipment 12 softens the raw water input into the raw water and supplies water to the condensate recovery box 9, the deaerator can remove oxygen vapor and other non-condensed gases in the feed water, and the quality of the feed water is ensured; finally, the water outlet of the condensed water recovery tank 9 delivers water to a steam generator 14 through a water feed pump 13 for high-pressure heating, the steam in the steam generator 14 is reheated through a boiler 15 to form superheated steam, and the superheated steam is delivered to the steam inlet of the steam turbine 1 to provide driving force for the steam turbine 1, so that the generator 2 can continuously generate power.
In conclusion, the condensing system integrates the advantages and the disadvantages of a water cooling unit and an air cooling unit, in water-deficient areas, the air cooling mode is adopted for condensation in winter, and in summer, the water cooling or the water cooling and air cooling combined condensation mode is adopted for condensation, so that the effect of saving industrial water is achieved, and the problem of reduction of the operation rate of the steam turbine caused by the heat of the natural steam in summer is solved.
The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.
Claims (7)
1. The utility model provides a water-cooling and air cooling combined type steam turbine condensing system, its characterized in that, retrieve subassembly and steam generation subassembly including steam turbine (1), generator (2), air cooling unit (3), water cooling unit (4), condensate water, steam turbine (1) links to each other with generator (2), the steam extraction mouth of steam turbine (1) links to each other with air cooling unit (3) and water cooling unit (4) respectively through tee bend exhaust steam pipe way (5), two exits of tee bend exhaust steam pipe way (5) are provided with vacuum gate valve (6) respectively, the coolant outlet of air cooling unit (3) and water cooling unit (4) respectively through the condensate pipe with the condensate water recovery subassembly links to each other, the condensate water recovery subassembly through steam generation subassembly with the steam inlet of steam turbine (1) links to each other.
2. The water-cooled and air-cooled hybrid steam turbine condensing system according to claim 1, wherein: the steam turbine (1) and the generator (2) are arranged in the power plant, and the air cooling unit (3) and the water cooling unit (4) are arranged outside the power plant.
3. The water-cooled and air-cooled hybrid steam turbine condensing system according to claim 2, wherein: the air cooling unit (3) comprises a plurality of air condenser (31) which are connected with one outlet of the three-way steam exhaust pipeline (5) in parallel, the water cooling unit (4) comprises a water condenser (41), a cooling tower (42) and a circulating water pump (43), the water condenser (41) is connected with the other outlet of the three-way steam exhaust pipeline (5), and the water condenser (41) is connected with the cooling tower (42) through the circulating water pump (43).
4. The water-cooled and air-cooled hybrid steam turbine condensing system according to claim 3, wherein: and cooling water outlets of the air condenser (31) and the water condenser (41) are connected with the condensed water recovery assembly through condensed water pipes.
5. The water-cooling and air-cooling combined type steam turbine condensing system according to any one of claims 1 to 4, wherein: the steam discharge port of steam turbine (1) includes two, one steam discharge port with the import of tee bend exhaust pipe (5) links to each other, another steam discharge port through exhaust branch pipe (7) with the subassembly is retrieved to the condensate water links to each other, the downside of exhaust branch pipe (7) is connected with drain pump (8).
6. The water-cooled and air-cooled hybrid steam turbine condensing system according to claim 5, wherein: the condensed water recovery assembly comprises a condensed water recovery box (9), a hot water well (10) and a condensed water pump (11), the drain pump (8) is connected with the hot water well (10), the hot water well (10) is connected with a water inlet of the condensed water recovery box (9) through the condensed water pump (11), a water inlet of the condensed water recovery box (9) is further connected with raw water treatment equipment (12), and a water outlet of the condensed water recovery box (9) is connected with a steam inlet of the steam turbine (1) through the steam generation assembly.
7. The water-cooled and air-cooled hybrid steam turbine condensing system according to claim 6, wherein: the steam generation assembly comprises a water feeding pump (13) and a steam generator (14), the condensed water recovery tank (9) is connected with the steam generator (14) through the water feeding pump (13), and the steam generator (14) is connected with a steam inlet of the steam turbine (1) through a boiler (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022614394.3U CN213392290U (en) | 2020-11-11 | 2020-11-11 | Water-cooling and air-cooling combined type steam turbine condensing system |
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| CN202022614394.3U CN213392290U (en) | 2020-11-11 | 2020-11-11 | Water-cooling and air-cooling combined type steam turbine condensing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532165A (en) * | 2021-07-15 | 2021-10-22 | 新疆大全新能源股份有限公司 | Cooling system and process of cooling water suitable for northern area |
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- 2020-11-11 CN CN202022614394.3U patent/CN213392290U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532165A (en) * | 2021-07-15 | 2021-10-22 | 新疆大全新能源股份有限公司 | Cooling system and process of cooling water suitable for northern area |
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