CN111828322A - Vacuumizing device for steam turbine condenser - Google Patents
Vacuumizing device for steam turbine condenser Download PDFInfo
- Publication number
- CN111828322A CN111828322A CN202010610990.6A CN202010610990A CN111828322A CN 111828322 A CN111828322 A CN 111828322A CN 202010610990 A CN202010610990 A CN 202010610990A CN 111828322 A CN111828322 A CN 111828322A
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- China
- Prior art keywords
- water
- cooling
- steam turbine
- cooling unit
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 238000001816 cooling Methods 0.000 claims abstract description 64
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims description 24
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
- F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to a vacuumizing device for a steam turbine condenser, which comprises a cooling unit, a gas-water separator and a plurality of water ring pumps, wherein the cooling unit is connected with the gas-water separator; the air extraction openings of the water ring pumps are connected with a condenser of a steam turbine, the water outlets of the water ring pumps are connected with the water inlet of the gas-water separator, and the water inlets of the water ring pumps are connected with the water outlet of the cooling unit; the water outlet of the gas-water separator is connected with the water inlet of the cooling unit; the water ring pump is cooled by the cooling unit, so that the water-saving and electricity-saving effects of the water ring pump are ensured, the self-consumption electricity of a power plant is saved, the energy is saved, and the water consumption of a steam turbine unit of the power plant is saved.
Description
Technical Field
The invention relates to the technical field of vacuum pumps, in particular to a vacuumizing device for a condenser of a steam turbine.
Background
The original equipment for vacuumizing the condenser of the steam turbine is a water jet air extractor, a matched water jet pump is generally 22 kw-55 kw (a small steam turbine with the power generation power of 3-30 MW), a thermal power plant is even more than 210kw (more than 50MW), and the power generation efficiency of the steam turbine is low along with the pumped low-temperature steam heating water tank (the water temperature can rise to 50 ℃ under the condition of no water supplement generally).
In order to ensure that the temperature of the water injection tank is reduced, a large amount of water supplementing methods are generally adopted to ensure that the working temperature of the water injection tank is lower than 35 ℃ as much as possible, and the water overflow of the water tank consumes very serious water; the water quantity wasted by water supplement of a 9MW steam turbine in a water injection tank is more than 300 tons, and a large amount of water enters the external environment through being discharged outside, so that environmental complaints of surrounding villagers are easily caused.
Some companies in the market put forward a way of adopting a water ring pump to solve the water consumption problem of the steam turbine condenser vacuumizing, but the water ring pump is very sensitive to the working temperature, so that the vacuumizing effect of the water ring pump is not as good as that of a water jet air extractor, the power generation efficiency of the steam turbine is lower on the contrary, and the water and electricity saving effects are not paid back (the loss generated energy is 1.5% of the overall efficiency of the steam turbine, and the electricity saving effect is less than 0.3% of the overall efficiency of the steam turbine). A large number of users on the market abandon the water-jet air extractor which is used for replacing a water ring pump.
Disclosure of Invention
The invention provides a steam turbine condenser vacuumizing device aiming at the technical problems in the prior art, and a water ring pump is adopted to solve the water consumption problem of steam turbine condenser vacuumizing and ensure the water and electricity saving effects of the water ring pump.
The technical scheme for solving the technical problems is as follows: a vacuumizing device for a steam turbine condenser comprises a cooling unit, a gas-water separator and a plurality of water ring pumps; the air extraction openings of the water ring pumps are connected with a condenser of a steam turbine, the water outlets of the water ring pumps are connected with the water inlet of the gas-water separator, and the water inlets of the water ring pumps are connected with the water outlet of the cooling unit; and the water outlet of the gas-water separator is connected with the water inlet of the cooling unit.
The invention has the beneficial effects that: the water ring pump is cooled by the cooling unit, so that the water-saving and electricity-saving effects of the water ring pump are guaranteed, the self-consumption of a power plant is saved, the energy is saved, and the water consumption of a steam turbine unit of the power plant is saved.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the system also comprises an air extraction pipeline, wherein one end of the air extraction pipeline is connected with a condenser of the steam turbine; and the air pumping ports of the water ring pump are respectively connected with different positions of the air pumping pipeline.
The beneficial effect of adopting the further scheme is that: a multistage vacuumizing system is formed by a plurality of water ring pumps, so that the vacuumizing efficiency is further improved.
Furthermore, the cooling unit adopts a water cooling mode, a cooling water inlet of the cooling unit is connected with a cooling water outlet of a cooling device of the steam turbine, and a cooling water outlet of the cooling unit is connected with a water inlet of the cooling tower.
Further, the device also comprises a heat dissipation device;
the cooling water inlet of the cooling unit is connected with the cooling water outlet of the cooling device of the steam turbine through a first valve, the cooling water outlet of the cooling unit is connected with the water inlet of the cooling tower through a second valve, and the cooling water outlet of the cooling device of the steam turbine is connected with the water inlet of the cooling tower through a third valve;
and a cooling water inlet of the cooling unit is connected with a water inlet of the heat dissipation device through a fourth valve, and a cooling water outlet of the cooling unit is connected with a water outlet of the heat dissipation device through a fifth valve.
The beneficial effect of adopting the further scheme is that: in non-summer, the water ring pump is cooled through the heat dissipation device and the cooling unit, and refrigeration can be carried out in a natural state; in summer, the environmental temperature rises, and the refrigeration requirement cannot be met in a natural state, and at the moment, a small part of circulating water of the turbine cooling tower can be used for refrigeration, so that the refrigeration effect is ensured.
Further, the cooling unit is used for ensuring that the water ring pump works at an optimal temperature point.
Further, the optimum temperature point is 15 to 20 ℃.
Drawings
FIG. 1 is a schematic structural diagram of a vacuum extractor of a steam turbine condenser according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
11. the system comprises a water ring pump 12, a gas-water separator 13, a cooling unit 14, a radiator 15, an air extraction pipeline 21, a steam turbine 22, a condenser 23, a refrigerating device 24, a cooling tower 31, a first valve 32, a second valve 33, a third valve 34, a fourth valve 35 and a fifth valve.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a steam turbine condenser vacuumizing device comprises a gas-water separator 1, a cooling unit 13, a radiator 14, an air exhaust pipeline 15 and a plurality of water ring pumps 11. This embodiment is used to evacuate the condenser 22 of the steam turbine 21. The steam turbine 21 also has a refrigerating device 23 and a cooling tower 24 for cooling the liquid in the steam turbine 21.
One end of the air extraction pipeline 15 is connected with a condenser 22 of the steam turbine 21, and the air extraction ports of the water ring pump 11 are respectively connected with different positions of the air extraction pipeline 15. A plurality of water ring pumps 11 form a multi-stage vacuum pumping system, and the vacuum pumping efficiency is further improved. The water outlets of the water ring pumps 11 are connected with the water inlets of the gas-water separator 12, and the water inlets of the water ring pumps 11 are connected with the water outlets of the cooling unit 13. The water outlet of the gas-water separator 12 is connected with the water inlet of the cooling unit 13. The water ring pump 11 is cooled by the cooling unit 13, and the water ring pump 11 is ensured to work at the optimal temperature point, so that the water-saving and electricity-saving effects of the water ring pump 11 are ensured, the self-consumption electricity of a power plant is saved, the energy is saved, and the water consumption of a steam turbine unit of the power plant is saved. Usually, the optimum temperature point of the water ring pump 11 is 15-20 ℃, and when the cooling unit 13 provides 15-20 ℃ working water for the water ring pump 11, the working efficiency of the water ring pump 11 is better than the working limit vacuum of the adopted original water jet air ejector.
The cooling unit 13 may be air-cooled or water-cooled, and in this embodiment, the cooling unit 13 is water-cooled. A cooling water inlet of the cooling unit 13 is connected with a cooling water outlet of the cooling device 23 of the steam turbine 21 through a first valve 31, a cooling water outlet of the cooling unit 13 is connected with a water inlet of the cooling tower 24 through a second valve 32, and a cooling water outlet of the cooling device 23 of the steam turbine 21 is connected with a water inlet of the cooling tower 24 through a third valve 33; the cooling water inlet of the cooling unit 13 is connected to the water inlet of the heat sink 14 through a fourth valve 34, and the cooling water outlet of the cooling unit 13 is connected to the water outlet of the heat sink 14 through a fifth valve 35.
The refrigeration unit 3 can supply 15-20 ℃ working water to the water ring pump 1 by opening the first valve 31 and the second valve 32 and closing the third valve 33, the fourth valve 34 and the fifth valve 35 by using a small part of circulating water of the cooling tower 24. The amount of water to be borrowed by the refrigerating unit 13 is only about 0.5% of the circulating water amount of the cooling tower 24, and a large amount of water supplement is not required. And at this time, the water ring pump 11 can be ensured to operate at the optimum temperature point even in summer or when the temperature is high.
In non-summer season or when the temperature is low, the first valve 31 and the second valve 32 can be closed, and the third valve 33, the fourth valve 34 and the fifth valve 35 can be opened. At this time, the refrigerating unit 13 can verify that the water ring pump 11 works at the optimal temperature point in a natural state, and the circulating water of the cooling tower 24 does not need to be used, so that the water consumption is further saved.
And this embodiment is little to the place requirement, and the on-the-spot transformation space is sufficient, need not construct reserve room or basic site in addition.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A vacuumizing device for a steam turbine condenser is characterized by comprising a cooling unit, a gas-water separator and a plurality of water ring pumps; the air extraction openings of the water ring pumps are connected with a condenser of a steam turbine, the water outlets of the water ring pumps are connected with the water inlet of the gas-water separator, and the water inlets of the water ring pumps are connected with the water outlet of the cooling unit; and the water outlet of the gas-water separator is connected with the water inlet of the cooling unit.
2. The steam turbine condenser vacuum extractor of claim 1 further comprising an extraction conduit, one end of said extraction conduit being connected to said steam turbine condenser; and the air pumping ports of the water ring pump are respectively connected with different positions of the air pumping pipeline.
3. The steam turbine condenser vacuumizing apparatus according to claim 1, wherein the cooling unit is water-cooled, and a cooling water inlet of the cooling unit is connected to a cooling water outlet of a cooling device of the steam turbine, and a cooling water outlet of the cooling unit is connected to a water inlet of the cooling tower.
4. The steam turbine condenser evacuator of claim 3 further comprising a heat sink;
the cooling water inlet of the cooling unit is connected with the cooling water outlet of the cooling device of the steam turbine through a first valve, the cooling water outlet of the cooling unit is connected with the water inlet of the cooling tower through a second valve, and the cooling water outlet of the cooling device of the steam turbine is connected with the water inlet of the cooling tower through a third valve;
and a cooling water inlet of the cooling unit is connected with a water inlet of the heat dissipation device through a fourth valve, and a cooling water outlet of the cooling unit is connected with a water outlet of the heat dissipation device through a fifth valve.
5. A steam turbine condenser vacuum extractor as claimed in claim 1 wherein said chiller is adapted to ensure that said water ring pump operates at an optimum temperature point.
6. The steam turbine condenser vacuum extractor of claim 1 wherein said optimum temperature point is 15-20 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610990.6A CN111828322A (en) | 2020-06-29 | 2020-06-29 | Vacuumizing device for steam turbine condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610990.6A CN111828322A (en) | 2020-06-29 | 2020-06-29 | Vacuumizing device for steam turbine condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111828322A true CN111828322A (en) | 2020-10-27 |
Family
ID=72899521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010610990.6A Pending CN111828322A (en) | 2020-06-29 | 2020-06-29 | Vacuumizing device for steam turbine condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111828322A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000015005A (en) * | 1998-07-02 | 2000-01-18 | Miura Co Ltd | Deaerator |
| CN201739234U (en) * | 2010-06-23 | 2011-02-09 | 武汉威龙特泵业有限责任公司 | Compression refrigeration device additionally arranged on vacuum pump |
| CN203051143U (en) * | 2012-11-30 | 2013-07-10 | 保定市普朗特能源科技有限公司 | Cooling system capable of improving capacity of water ring vacuum pump |
| CN204716628U (en) * | 2015-06-26 | 2015-10-21 | 中国能源建设集团湖南省电力设计院有限公司 | A kind of large-size thermal power plant vacuum pump cold cooling unit |
| CN205956002U (en) * | 2016-07-07 | 2017-02-15 | 国网冀北电力有限公司技能培训中心 | Power plant is water ring vacuum pump cooling system for condenser |
| DE102017004213A1 (en) * | 2017-04-29 | 2018-10-31 | Gea Tds Gmbh | Method and plant for controlling and / or regulating the treatment of heat-sensitive liquid food products |
-
2020
- 2020-06-29 CN CN202010610990.6A patent/CN111828322A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000015005A (en) * | 1998-07-02 | 2000-01-18 | Miura Co Ltd | Deaerator |
| CN201739234U (en) * | 2010-06-23 | 2011-02-09 | 武汉威龙特泵业有限责任公司 | Compression refrigeration device additionally arranged on vacuum pump |
| CN203051143U (en) * | 2012-11-30 | 2013-07-10 | 保定市普朗特能源科技有限公司 | Cooling system capable of improving capacity of water ring vacuum pump |
| CN204716628U (en) * | 2015-06-26 | 2015-10-21 | 中国能源建设集团湖南省电力设计院有限公司 | A kind of large-size thermal power plant vacuum pump cold cooling unit |
| CN205956002U (en) * | 2016-07-07 | 2017-02-15 | 国网冀北电力有限公司技能培训中心 | Power plant is water ring vacuum pump cooling system for condenser |
| DE102017004213A1 (en) * | 2017-04-29 | 2018-10-31 | Gea Tds Gmbh | Method and plant for controlling and / or regulating the treatment of heat-sensitive liquid food products |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201027 |
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| RJ01 | Rejection of invention patent application after publication |