CN112344757A - Power plant condenser evacuation prevent ponding device - Google Patents
Power plant condenser evacuation prevent ponding device Download PDFInfo
- Publication number
- CN112344757A CN112344757A CN202011362516.2A CN202011362516A CN112344757A CN 112344757 A CN112344757 A CN 112344757A CN 202011362516 A CN202011362516 A CN 202011362516A CN 112344757 A CN112344757 A CN 112344757A
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- Prior art keywords
- evacuation
- inlet
- power plant
- pipeline
- valve
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- 238000005086 pumping Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model provides a power plant's condenser evacuation prevent ponding device, including the female pipe of evacuation and right the female pipe of evacuation carries out two sets of independent evacuation systems of evacuation, and in the normal operating process, one of them set of evacuation system uses, and another set is then spare. Because the communicated drain pipeline is arranged behind the inlet manual isolation valves of the two sets of vacuum pumping systems and in front of the inlet absolute pressure gauge, the communicated drain pipeline is also provided with a valve. Set up behind the intercommunication drain line, reserve evacuation system entry section ponding can be siphoned away by using evacuation system to can not make reserve pump pipe section ponding because of the continuous condensation of the noncondensable gas in the pipeline, thoroughly solve entry section ponding problem, ensure the normal operating of power plant.
Description
Technical Field
The invention relates to a power plant condenser vacuumizing system, in particular to a water accumulation preventing device for vacuumizing of a power plant condenser.
Background
At present, in a condenser vacuum pumping system of a power plant, a water ring vacuum pump is selected to pump the system, generally two water ring vacuum pumps are used and prepared, and a main pipe system is adopted. The two water ring vacuum pumps are arranged below the main pipe so as to pump out condensed water generated by non-condensable gas pumped from the condenser in the main pipe. The running water ring vacuum pump can discharge non-condensed gas and water to the steam-water separation tank, the gas is discharged, and the condensed water overflows. In the standby state, because the pneumatic butterfly valve at the inlet of the water pump is in a closed state, water can be accumulated in a section of pipeline from the pneumatic butterfly valve at the inlet of the standby water ring vacuum pump to the main pipe (the condensed water generated by the gas in the main pipe is accumulated).
This results in: 1. when the standby pump is started, the starting power is high due to a large amount of accumulated water at the inlet section, pump tripping can be caused, and the blades of the water pump can be seriously damaged; 2. for system reasons, the backup pump is jointly started when an absolute pressure gauge reaches a certain pressure before a backup pump inlet starts a butterfly valve. But because the pipeline is accumulated with water, the pipeline has a certain height. The height is typically 60-80CM, so the absolute pressure gauge pressure is consequently 6-8KPa higher, which results in the absolute pressure gauge pressure varying with the level of the condensate at the inlet. If the joint starting condition of the absolute pressure gauge is set unreasonably, the standby pump can be started frequently, the service life of the water pump is influenced on the one hand, and the normal operation of a condenser vacuum pumping system is influenced simultaneously.
Disclosure of Invention
In order to solve the technical problem, the invention provides a water accumulation prevention device for vacuumizing a condenser of a power plant, which comprises a vacuumizing main pipe and two independent vacuumizing systems for vacuumizing the vacuumizing main pipe. Set up behind the intercommunication drain line, reserve evacuation system entry section ponding can be siphoned away by using evacuation system to can not make reserve pump pipe section ponding because of the continuous condensation of the noncondensable gas in the pipeline, thoroughly solve entry section ponding problem, ensure the normal operating of power plant.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a power plant's condenser evacuation prevent ponding device, including the female pipe of evacuation and right the female pipe of evacuation carries out two sets of independent evacuation systems of evacuation, evacuation system includes respectively: the pipeline connected with the vacuumizing main pipe is also sequentially provided with an inlet manual isolating valve, an inlet absolute pressure gauge, an inlet pneumatic butterfly valve, an inlet check valve and a vacuum pump according to the direction of air flow; the inlet of the differential pressure transmitter is connected to the inlet of the inlet pneumatic butterfly valve, and the outlet of the differential pressure transmitter is connected to the outlet of the inlet check valve;
the device is characterized in that a communicated drain pipeline is arranged behind the inlet manual isolation valves of the two sets of vacuum pumping systems and in front of the inlet absolute pressure gauge, and a valve is further arranged on the communicated drain pipeline.
Preferably, the vacuum pump is a water ring vacuum pump.
The invention has the beneficial effects that: the invention provides a water accumulation prevention device for vacuumizing a condenser of a power plant, which comprises a vacuumizing main pipe and two independent vacuumizing systems for vacuumizing the vacuumizing main pipe. Set up behind the intercommunication drain line, reserve evacuation system entry section ponding can be siphoned away by using evacuation system to can not make reserve pump pipe section ponding because of the continuous condensation of the noncondensable gas in the pipeline, thoroughly solve entry section ponding problem. The problems of the prior art can be effectively solved. Ensuring the normal operation of the power plant.
Drawings
Fig. 1 is a schematic diagram of a setup arrangement of one embodiment of the prior art.
Fig. 2 is a schematic diagram of the arrangement of the apparatus according to the first embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
a is in a vacuum-pumping system, B is a standby vacuum-pumping system,
A1. the inlet is provided with a manual isolating valve,
A2. a communicated drain pipeline, A21 and A21 valves are additionally arranged,
A3. an inlet absolute pressure gauge is arranged on the inlet of the pressure gauge,
A4. an inlet pneumatic butterfly valve is arranged on the shell,
A5. an inlet check valve is arranged on the outer side of the shell,
A6. a vacuum pump is arranged on the vacuum pump,
A7. a differential pressure transmitter is arranged on the base plate,
A8. and (5) vacuumizing the main pipe.
Detailed Description
Fig. 1 is a schematic diagram of a setup arrangement of one embodiment of the prior art. The drawing shows that in the prior art, the water accumulation prevention device for vacuumizing the condenser of the power plant comprises a vacuumizing main pipe A8 and two independent vacuumizing systems A and B for vacuumizing the vacuumizing main pipe, wherein A is an in-use vacuumizing system, and B is a standby vacuumizing system.
The vacuum-pumping systems A and B are connected to the vacuum-pumping main pipe A8 to pump vacuum, and the vacuum-pumping system A comprises: the pipeline connected with the vacuumizing main pipe A8 is also sequentially provided with an inlet manual isolating valve A1, an inlet absolute pressure gauge A3, an inlet pneumatic butterfly valve A4, an inlet check valve A5 and a vacuum pump A6 according to the direction of air flow; a pressure difference transmitter A7 is further arranged, the inlet of the pressure difference transmitter A7 is connected to the inlet of the inlet pneumatic butterfly valve A4, and the outlet of the pressure difference transmitter A7 is connected to the outlet of the inlet check valve A5. In this example, vacuum pump a6 is a water ring vacuum pump. The configuration of the vacuum-pumping system B is the same as that of the vacuum-pumping system A.
In the prior art, two independent vacuum pumping systems a and B are both arranged below a vacuum pumping main pipe A8 so as to pump away condensed water generated by non-condensable gas pumped from a condenser in the vacuum pumping main pipe A8. Vacuum system B under the standby state is because of water pump entry pneumatic butterfly valve is closed state, so reserve water ring vacuum pump entry pneumatic butterfly valve preceding to this section pipeline of female pipe can ponding (the condensate accumulation that the gas in the female pipe produced), because of at normal operating condition, water ring vacuum pump entry section is the negative pressure, can't discharge the intraductal condensate through conventional method. When the standby pump is started, the starting power is high due to a large amount of accumulated water at the inlet section, pump tripping can be caused, and the blades of the water pump are seriously damaged; resulting in frequent restart of the backup pump. And hidden troubles are brought to the safe operation of the whole system.
Fig. 2 is a schematic diagram of the arrangement of the apparatus according to the first embodiment of the present invention. In contrast to the prior art, in this example, a communicating drain line a2 is provided after the inlet manual isolation valve a1 and before the inlet absolute pressure gauge A3 of the two vacuum pumping systems a and B, and valves a21 and a22 are also provided on the communicating drain line a2.
Set up behind the intercommunication drain line A2, reserve evacuation system B entry section ponding can be siphoned away by using evacuation system A to can not make reserve pump pipe section ponding because of the continuous condensation of the incondensable gas in the pipeline, thoroughly solve entry section ponding problem, ensure the normal operating of power plant.
Claims (2)
1. The utility model provides a power plant's condenser evacuation prevent ponding device, including the female pipe of evacuation and right the female pipe of evacuation carries out two sets of independent evacuation systems of evacuation, evacuation system includes respectively: the pipeline connected with the vacuumizing main pipe is also sequentially provided with an inlet manual isolating valve, an inlet absolute pressure gauge, an inlet pneumatic butterfly valve, an inlet check valve and a vacuum pump according to the direction of air flow; the inlet of the differential pressure transmitter is connected to the inlet of the inlet pneumatic butterfly valve, and the outlet of the differential pressure transmitter is connected to the outlet of the inlet check valve;
the device is characterized in that a communicated drain pipeline is arranged behind the inlet manual isolation valves of the two sets of vacuum pumping systems and in front of the inlet absolute pressure gauge, and a valve is further arranged on the communicated drain pipeline.
2. The device of claim 1, wherein the vacuum pump is a water ring vacuum pump.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011362516.2A CN112344757A (en) | 2020-11-28 | 2020-11-28 | Power plant condenser evacuation prevent ponding device |
| PCT/CN2021/106134 WO2022110831A1 (en) | 2020-11-28 | 2021-07-14 | Water accumulation prevention device for evacuating power plant condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011362516.2A CN112344757A (en) | 2020-11-28 | 2020-11-28 | Power plant condenser evacuation prevent ponding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112344757A true CN112344757A (en) | 2021-02-09 |
Family
ID=74366080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011362516.2A Pending CN112344757A (en) | 2020-11-28 | 2020-11-28 | Power plant condenser evacuation prevent ponding device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112344757A (en) |
| WO (1) | WO2022110831A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833630A (en) * | 2021-09-29 | 2021-12-24 | 潮州深能环保有限公司 | Pipeline system of vacuum pump unit of waste incineration power plant |
| WO2022110831A1 (en) * | 2020-11-28 | 2022-06-02 | 桂林市深能环保有限公司 | Water accumulation prevention device for evacuating power plant condenser |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013181466A (en) * | 2012-03-01 | 2013-09-12 | Jfe Steel Corp | Condenser vacuum control device and condenser vacuum control method |
| CN105091622A (en) * | 2015-09-14 | 2015-11-25 | 湖南创元铝业有限公司 | Vacuumizing system for condenser of thermal power generation set |
| CN206556456U (en) * | 2017-01-09 | 2017-10-13 | 华电莱州发电有限公司 | A kind of evacuation system for steam condenser for transforming vacuum pump inlet pipe |
| CN206670399U (en) * | 2017-04-21 | 2017-11-24 | 河北冀研能源科学技术研究院有限公司 | Newly-built condenser of power plant vacuumizes operation maintenance system |
| CN107560451A (en) * | 2017-10-17 | 2018-01-09 | 武汉艾德沃泵阀有限公司 | A kind of energy-saving type vacuum device |
| CN107830742A (en) * | 2017-12-04 | 2018-03-23 | 武汉艾德沃泵阀有限公司 | A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants |
| CN209943095U (en) * | 2019-05-20 | 2020-01-14 | 武汉艾德沃泵阀有限公司 | Energy-saving cone vacuum pump unit |
| CN214120833U (en) * | 2020-11-28 | 2021-09-03 | 桂林市深能环保有限公司 | Power plant condenser evacuation prevent ponding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE1925234B2 (en) * | 1969-05-17 | 1973-08-16 | GEA Luftkuhlergesellschaft Happel GmbH & Co KG, 4630 Bochum | INJECTION CONDENSATION SYSTEM WITH RECOOLING OF THE INJECTION WATER VIA AIR-COOLED COOLING ELEMENTS |
| CN205825746U (en) * | 2016-05-31 | 2016-12-21 | 廖倩 | A kind of plant condenser pumped vacuum systems |
| CN207945993U (en) * | 2017-12-01 | 2018-10-09 | 华润电力湖南有限公司 | A kind of condenser vacuum-pumping pipeline system |
| CN112344757A (en) * | 2020-11-28 | 2021-02-09 | 桂林市深能环保有限公司 | Power plant condenser evacuation prevent ponding device |
-
2020
- 2020-11-28 CN CN202011362516.2A patent/CN112344757A/en active Pending
-
2021
- 2021-07-14 WO PCT/CN2021/106134 patent/WO2022110831A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013181466A (en) * | 2012-03-01 | 2013-09-12 | Jfe Steel Corp | Condenser vacuum control device and condenser vacuum control method |
| CN105091622A (en) * | 2015-09-14 | 2015-11-25 | 湖南创元铝业有限公司 | Vacuumizing system for condenser of thermal power generation set |
| CN206556456U (en) * | 2017-01-09 | 2017-10-13 | 华电莱州发电有限公司 | A kind of evacuation system for steam condenser for transforming vacuum pump inlet pipe |
| CN206670399U (en) * | 2017-04-21 | 2017-11-24 | 河北冀研能源科学技术研究院有限公司 | Newly-built condenser of power plant vacuumizes operation maintenance system |
| CN107560451A (en) * | 2017-10-17 | 2018-01-09 | 武汉艾德沃泵阀有限公司 | A kind of energy-saving type vacuum device |
| CN107830742A (en) * | 2017-12-04 | 2018-03-23 | 武汉艾德沃泵阀有限公司 | A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants |
| CN209943095U (en) * | 2019-05-20 | 2020-01-14 | 武汉艾德沃泵阀有限公司 | Energy-saving cone vacuum pump unit |
| CN214120833U (en) * | 2020-11-28 | 2021-09-03 | 桂林市深能环保有限公司 | Power plant condenser evacuation prevent ponding device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110831A1 (en) * | 2020-11-28 | 2022-06-02 | 桂林市深能环保有限公司 | Water accumulation prevention device for evacuating power plant condenser |
| CN113833630A (en) * | 2021-09-29 | 2021-12-24 | 潮州深能环保有限公司 | Pipeline system of vacuum pump unit of waste incineration power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022110831A1 (en) | 2022-06-02 |
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| Date | Code | Title | Description |
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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 | ||
| CB02 | Change of applicant information |
Address after: 541000 Shankou domestic waste sanitary landfill, Shuikou village, Lingui Town, Lingui District, Guilin City, Guangxi Zhuang Autonomous Region Applicant after: Guilin Shenneng environmental protection Co.,Ltd. Applicant after: Chaozhou Shenneng environmental protection Co.,Ltd. Applicant after: Shenzhen Energy and environmental protection Co.,Ltd. Applicant after: Shenzhen Shenneng environmental protection East Co.,Ltd. Applicant after: Shenzhen Shenneng Environmental Protection City Environmental Service Co.,Ltd. Applicant after: WUHAN SHENNENG ENVIRONMENTAL PROTECTION NEW DITCH WASTE POWER GENERATION Co.,Ltd. Applicant after: Shanxian Shenneng environmental protection Co.,Ltd. Address before: 541000 Shankou domestic waste sanitary landfill, Shuikou village, Lingui Town, Lingui District, Guilin City, Guangxi Zhuang Autonomous Region Applicant before: Guilin Shenneng environmental protection Co.,Ltd. Applicant before: Chaozhou Shenneng environmental protection Co.,Ltd. Applicant before: SHENZHEN ENERGY ENVIRONMENTAL ENGINEERING Co.,Ltd. Applicant before: Shenzhen Shenneng environmental protection East Co.,Ltd. Applicant before: Shenzhen Shenneng Environmental Protection City Environmental Service Co.,Ltd. Applicant before: WUHAN SHENNENG ENVIRONMENTAL PROTECTION NEW DITCH WASTE POWER GENERATION Co.,Ltd. Applicant before: Shanxian Shenneng environmental protection Co.,Ltd. |
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| CB02 | Change of applicant information |