CN209445837U - A kind of double back pressure Turbo-generator Set evacuation system for steam condenser - Google Patents
A kind of double back pressure Turbo-generator Set evacuation system for steam condenser Download PDFInfo
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- CN209445837U CN209445837U CN201822233689.9U CN201822233689U CN209445837U CN 209445837 U CN209445837 U CN 209445837U CN 201822233689 U CN201822233689 U CN 201822233689U CN 209445837 U CN209445837 U CN 209445837U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model relates to a kind of double back pressure Turbo-generator Set evacuation system for steam condenser, including high back pressure side condenser, low back pressure side condenser and high back pressure side Fen Men, the high back pressure side condenser two sides vacuumize Fen Men and No. two with No.1 respectively and vacuumize a point Men Xianglian, the No.1 vacuumizes point door and described No. two vacuumize point door and divide the left side of door to be connected with high back pressure side by pipeline, high back pressure side divides door bypass door and the high back pressure side to divide Men Binglian, high back pressure side, which is divided, connects branch one on the right side of door, branch two and branch three, it is good and when Inlet Temperature of Circulating Water is low in unit vacuum tightness, close high back pressure side Fen Men, divide the aperture of door bypass door by adjusting high back pressure side, only need a vacuum pump operation, condenser can be made to form height under the throttling action that door bypass door is divided in high back pressure side, low pressure back pressure, to reach i.e. Meet the service requirement of condenser high and low pressure back pressure, and reduces station service power consumption rate, energy-saving purpose.
Description
Technical field
The utility model relates to Turbo-generator Set condenser system field more particularly to a kind of double back pressure steam turbine generators
Group evacuation system for steam condenser.
Background technique
With the development of the technology of Turbo-generator Set, unit installed capacity increasingly comes, and the requirement of energy-saving and emission-reduction is also got over
Come higher, how to reduce station service power consumption rate, improving unit efficiency is power plant's urgent problem.
600MW and the above machine Subcritical Units, supercritical unit, extra-supercritical unit are substantially all more using condenser at present
Back pressure technology has a low back pressure condenser and a high back pressure condenser, to improve the overall operation efficiency of unit.But it adopts
With the unit of more back pressures, even if unit requires maintenance two when operating normally in the good situation of Tightness Property of Condenser Vacuum System
Platform or the above vacuum pump operation, to meet the needs of condenser different pressures.In this case the station-service of unit is undoubtedly increased
Electric rate；Since circulating water temperature is lower when winter, starting a vacuum pump also can guarantee the operation of vacuum, but at this time must will be high
Low pressure condenser connection, this aspect cause low back pressure side condenser terminal difference to increase, and generate unfavorable shadow to condenser heat transfer effect
It rings, is on the other hand lost the meaning of the raising unit efficiency of condenser setting height back pressure.
Due to condenser tightness is preferable or the suction capactity of the lower Shi Yitai vacuum pump of circulating water temperature is to be able to satisfy
The requirement of condenser vacuum is maintained, the fortune of the high and low back pressure of condenser how is met in the case where not running two vacuum pumps
Row demand, becoming power plant reduces station service power consumption rate, energy-saving and urgent problem.
Utility model content
Technical problem to be solved by the utility model is: true in more back pressure Turbo-generator Set condensers for the prior art
Empty set system, for the high and low back pressure operation for guaranteeing condenser, it is necessary to start two and the above vacuum pump operation, increase the factory of unit
The problem of power consumption rate.
A kind of double back pressure Turbo-generator Set condensers pumpings that achieve the above purpose, the technical solution of the present invention is:
Vacuum system, including high back pressure side condenser, low back pressure side condenser and high back pressure side Fen Men, high back pressure side condenser two
Side vacuumizes Fen Men and No. two with No.1 respectively and vacuumizes a point Men Xianglian, and the No.1 vacuumizes point door and described No. two vacuumize
Door is divided to divide the left side of door to be connected with high back pressure side by pipeline, high back pressure side divides door bypass door and the high back pressure side to divide door simultaneously
Connection, the high back pressure side divide the right side of door to connect respectively with branch three and No. two vacuum pump communicating door, No. two vacuum pumps connection
Network door is connected respectively at branch two with No.1 vacuum pump communicating door, and the No.1 vacuum pump communicating door is respectively at branch one, three
It vacuumizes Fen Men and No. four and vacuumizes a point door and connect, described No. three vacuumize point door and described No. four vacuumize a point door and are separately connected
In the two sides of the low back pressure side condenser；
Branch one is formed by connecting from top to bottom by No.1 entrance door, No.1 vacuum pump and exhaust outlet, and branch two is entered by No. two
Kou Men, No. two vacuum pumps and exhaust outlet are formed by connecting from top to bottom, and branch three is by No. three entrance doors, No. three vacuum pumps and exhaust outlet
It is formed by connecting from top to bottom.
Preferably, the high back pressure side divide door be completely open and close type valve, the high back pressure side divide door be manually, electrically,
Pneumatically or hydraulically manipulation and control mode.
Preferably, the high back pressure side divides door bypass door to be adjustment type valve, can run and keep in any opening degree；Institute
State high back pressure side divide door bypass door be manually, electrically, pneumatically or hydraulically manipulation and control mode.
The control method of above-mentioned double back pressure Turbo-generator Set evacuation system for steam condenser, includes the following steps:
WhenWhen, branch one, branch two, branch three run it is any all the way, operation be the branch
The vacuum pump operation of road, and the entrance door of the branch road is opened, then opens the No.1 vacuum pump communicating door and No. two described
Vacuum pump communicating door closes the high back pressure side Fen Men, slowly opens high back pressure side and divides door bypass door, when the high back pressure side is solidifying
When vapour device vacuum values no longer decline, current high back pressure side is maintained to divide the aperture of door bypass door；
WhenBranch one, branch two, branch three run any two-way, standard-sized sheet high back pressure side
Divide door, door bypass door is divided in slowly closing high back pressure side,
Wherein, Tightness Property of Condenser Vacuum System ps, unit Pa/min, condenser optimal vacuum pressure is po, unit kPa,
Separate unit vacuum pump is in optimal vacuum pressure poWhen suction capactity be pp, unit m3/ min, Steam Side of Condenser volume are vc, unit
For m3。
Condenser vacuum is mainly determined by the factor of two aspects, first is that circulating water temperature, first is that vacuum tightness.For
Using the condenser of height back pressure, since high back pressure side and the low circulating water temperature by pressure side condenser are inconsistent, high back pressure side
The pressure of condenser is naturally just high, if using Qi Yitai vacuum pump at this time, just by pressure must connection run, it is low by pressure side
Condenser pressure will be consistent with high back pressure lateral pressure, since condenser pressure is very big on unit efficiency influence, causes unit whole
Body efficiency reduces；If connection is not run height back pressure condenser, two vacuum pump operations must be just opened, station service is increased
Rate.This patent is good and when Inlet Temperature of Circulating Water is low in unit vacuum tightness, high back pressure side Fen Men is closed, by adjusting height
The aperture of door bypass door is divided in back pressure side, only needs a vacuum pump operation, can divide the throttling action of door bypass door in high back pressure side
Under so that condenser is formed high and low pressure back pressure, to reach the service requirement for meeting condenser high and low pressure back pressure, and reduce factory
Power consumption rate, energy-saving purpose.
The beneficial effects of the utility model are: for current more back pressure Turbo-generator Set condenser vacuum systems, to protect
Demonstrate,prove the high and low back pressure operation of condenser, it is necessary to start two and the above vacuum pump operation, increase the station service power consumption rate of unit.Pass through
The implementation of the utility model only runs a vacuum pump in the case where meeting the high and low back pressure operation of condenser, and reaching makes power plant
Reduce station service power consumption rate, energy-saving purpose.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of Tthe utility model system；
In figure: 1, high back pressure side condenser, 2, low back pressure side condenser, 3, No.1 vacuumize a point door, 4, No. two vacuumize
Point door, 5, No. three vacuumize a point door, and 6, No. four vacuumize a point door, 7, high back pressure side Fen Men, 8, high back pressure side divide door bypass door, 9,
No.1 vacuum pump communicating door, 10, No. two vacuum pump communicating doors, 11, No.1 vacuum pump, 12, No. two vacuum pumps, 13, No. three vacuum
Pump, 14, No.1 entrance door, 15, No. two entrance doors, 16, No. three entrance doors.
Specific embodiment
Further illustrate the utility model with reference to the accompanying drawing, it should be understood that the example be merely to illustrate the utility model without
For limiting the scope of the utility model, after having read the utility model, those skilled in the art are to the utility model
The modification of various equivalent forms falls within the application range as defined in the appended claims.
A kind of double back pressure Turbo-generator Set evacuation system for steam condenser, including high back pressure side condenser 1, low back pressure side coagulate
Door 7 is divided in vapour device 2 and high back pressure side, and condenser 1 two sides in the high back pressure side vacuumize point door 3 with No.1 respectively and No. two vacuumize
Door 4 is divided to be connected, the No.1 vacuumizes point door 3 and described No. two vacuumize the left side that point door 4 divides door 7 by pipeline and high back pressure side
Side is connected, and high back pressure side divides door bypass door 8 to divide door 7 in parallel with the high back pressure side, and the high back pressure side divides the right side of door 7 to distinguish
It is connect with branch three and No. two vacuum pump communicating door 10, No. two vacuum pump communicating doors 10 are respectively at branch two and No.1 vacuum
It pumps communicating door 9 to connect, the No.1 vacuum pump communicating door 9 vacuumizes point door 5 respectively at branch one, three and No. four vacuumize point
Door 6 connects, and described No. three vacuumize point door 5 and described No. four vacuumize point door 6 and are connected to the low back pressure side condenser 2
Two sides；
Branch one is formed by connecting from top to bottom by No.1 entrance door 14, No.1 vacuum pump 11 and exhaust outlet, and branch two is by two
Number 15, No. two vacuum pumps 12 of entrance door and exhaust outlet are formed by connecting from top to bottom, and branch three is by 16, No. three vacuum of No. three entrance doors
Pump 13 and exhaust outlet are formed by connecting from top to bottom.
High back pressure side divides door 7 to be completely open and close type valve, and for manually, electrically, pneumatically or hydraulically manipulation and control mode.
High back pressure side divides door bypass door 8 to be adjustment type valve, can run and keep in any opening degree；The high back pressure side
Point door bypass door 8 be manually, electrically, pneumatically or hydraulically manipulation and control mode.
When this system unit is run, No.1, which vacuumizes point door 3, two and vacuumizes point door 4, three, vacuumizes point door 5 and four
It is in the open state always number to vacuumize point door 6.
The control method of above-mentioned double back pressure Turbo-generator Set evacuation system for steam condenser, includes the following steps:
WhenWhen, branch one, branch two, branch three run it is any all the way, operation be the branch
The vacuum pump operation of road, and the entrance door of the branch road is opened, other two branches are in close state, i.e., the branch road is true
Sky pump is not run, and the entrance door of the branch road is closed, then opens the No.1 vacuum pump communicating door 9 and No. two vacuum pumps
Communicating door 10 closes the high back pressure side and divides door 7, slowly opens high back pressure side and divides door bypass door 8, when high back pressure side condensing
When 1 vacuum values of device no longer decline, current high back pressure side is maintained to divide the aperture of door bypass door 8；
WhenBranch one, branch two, branch three run any two-way, standard-sized sheet high back pressure
Door 7 is divided in side, and door bypass door 8 is divided in slowly closing high back pressure side, when such as branch one and the operation of branch two, closes the contact of No.1 vacuum pump
Door 9, opens No. two vacuum pump communicating doors 10；When branch one and branch three are run, No.1 vacuum pump communicating door 9 is closed, closes two
Number vacuum pump communicating door 10；When branch two and branch three are run, No.1 vacuum pump communicating door 9 is opened, closes No. two vacuum pump connection
Network door 10.
Wherein, Tightness Property of Condenser Vacuum System ps, unit Pa/min, condenser optimal vacuum pressure is po, unit kPa,
Separate unit vacuum pump is in optimal vacuum pressure poWhen suction capactity be pp, unit m3/ min, Steam Side of Condenser volume are vc, unit
For m3。
Claims (3)
1. a kind of double back pressure Turbo-generator Set evacuation system for steam condenser, including high back pressure side condenser (1) and low back pressure side
Condenser (2)；It is characterized by also including high back pressure side Fen Men (7), the high back pressure side condenser (1) two sides are respectively with one
It number vacuumizes a point door (3) and vacuumizes a point door (4) with No. two and be connected, the No.1 vacuumizes a point door (3) and described No. two vacuumize
Door (4) are divided to be connected by pipeline with the left side of high back pressure side Fen Men (7), door bypass door (8) and the high back pressure are divided in high back pressure side
Side Fen Men (7) is in parallel, and the right side of the high back pressure side Fen Men (7) connects with branch three and No. two vacuum pump communicating door (10) respectively
It connects, No. two vacuum pump communicating doors (10) connect respectively at branch two and No.1 vacuum pump communicating door (9), the No.1 vacuum
Pump communicating door (9) vacuumizes a point door (5) respectively at branch one, three and No. four vacuumize a point door (6) connection, and described No. three are taken out very
Space division door (5) and described No. four vacuumize the two sides that a point door (6) is connected to the low back pressure side condenser (2)；
Branch one is formed by connecting from top to bottom by No.1 entrance door (14), No.1 vacuum pump (11) and exhaust outlet, and branch two is by two
Number entrance door (15), No. two vacuum pumps (12) and exhaust outlet are formed by connecting from top to bottom, and branch three is by No. three entrance doors (16), three
Number vacuum pump (13) and exhaust outlet are formed by connecting from top to bottom.
2. a kind of double back pressure Turbo-generator Set evacuation system for steam condenser according to claim 1, it is characterised in that: institute
Stating high back pressure side Fen Men (7) is completely open and close type valve, and the high back pressure side Fen Men (7) is manually, electrically, pneumatically or hydraulically to grasp
Vertical control mode.
3. a kind of double back pressure Turbo-generator Set evacuation system for steam condenser according to claim 1, it is characterised in that: institute
Stating high back pressure side divides door bypass door (8) to be adjustment type valve, can run and keep in any opening degree；The high back pressure side Fen Men
Bypass door (8) be manually, electrically, pneumatically or hydraulically manipulation and control mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233689.9U CN209445837U (en) | 2018-12-28 | 2018-12-28 | A kind of double back pressure Turbo-generator Set evacuation system for steam condenser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233689.9U CN209445837U (en) | 2018-12-28 | 2018-12-28 | A kind of double back pressure Turbo-generator Set evacuation system for steam condenser |
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| Publication Number | Publication Date |
|---|---|
| CN209445837U true CN209445837U (en) | 2019-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822233689.9U Active CN209445837U (en) | 2018-12-28 | 2018-12-28 | A kind of double back pressure Turbo-generator Set evacuation system for steam condenser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539817A (en) * | 2018-12-28 | 2019-03-29 | 贵州电网有限责任公司 | A kind of double back pressure Turbo-generator Set evacuation system for steam condenser and its control method |
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2018
- 2018-12-28 CN CN201822233689.9U patent/CN209445837U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539817A (en) * | 2018-12-28 | 2019-03-29 | 贵州电网有限责任公司 | A kind of double back pressure Turbo-generator Set evacuation system for steam condenser and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220428 Address after: No.17 Binhe Road, Nanming District, Guiyang City, Guizhou Province Patentee after: Guizhou Power Grid Co.,Ltd. Address before: No.17 Binhe Road, Nanming District, Guiyang City, Guizhou Province Patentee before: Guizhou Power Grid Co.,Ltd. Patentee before: Guizhou Chuangxing Electric Power Research Institute Co., Ltd |
|
| TR01 | Transfer of patent right |