CN105134313A - Control device of steam extracting valve on steam turbine - Google Patents
Control device of steam extracting valve on steam turbine Download PDFInfo
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- CN105134313A CN105134313A CN201510497342.3A CN201510497342A CN105134313A CN 105134313 A CN105134313 A CN 105134313A CN 201510497342 A CN201510497342 A CN 201510497342A CN 105134313 A CN105134313 A CN 105134313A
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- water inlet
- water
- extraction valve
- steam turbine
- valve
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Abstract
The invention discloses a control device of a steam extracting valve on a steam turbine. The control device comprises a water inlet main pipe, wherein a water inlet of the water inlet main pipe is connected with a pressure water source; pressure water inlets of steam extracting valve control bases on all steam extracting pipes of the steam turbine are respectively connected with one end of one water inlet branch pipe; the other end of each water inlet branch pipe is communicated with a water outlet of the water inlet main pipe; and the water inlet main pipe is serially connected with two steam extracting valve linkage devices capable of leaking pressure water in the steam extracting valve control bases in sequence. The control device of the steam extracting valve on the steam turbine can quickly and reliably close a valve body of the steam extracting valve to prevent steam in steam extracting pipes from flowing back into the steam turbine when the steam turbine is stopped caused by faults, so that the probability of overspeed damage of the steam turbine is largely reduced.
Description
Technical field
The present invention relates to turbine discharge system, be specifically related to the control gear of extraction valve on steam turbine.
Background technique
Seat handled by the extraction valve that extraction valve comprises valve body and the folding of energy control valve body, extraction valve is handled seat and is connected with the control gear of extraction valve, the control gear of extraction valve can be handled seat to extraction valve and carries out confession press water or let out press water, extraction valve valve body can be made to open after feeding press water in extraction valve manipulation seat, handle press water in seat when extraction valve and extraction valve valve body can be made to close after being released; The valve body of extraction valve is installed on the extraction line of steam turbine, and extraction line is communicated with extracted steam from turbine door.When steam turbine normally works, the valve body of extraction valve is opened, and the steam-energy in steam turbine is outwards carried from extraction line.The steam turbine not on-load when steam turbine error protection is shut down, now the Primary intake valve of steam turbine must be closed to fast and reliable with the door that draws gas, it is to prevent the steam in boiler from entering steam turbine that Primary intake valve is closed, a closedown of drawing gas is to prevent the opposing steam flow in extraction line from entering steam turbine, when steam turbine not on-load time, steam enter steam turbine may make steam turbine have hypervelocity damage danger; The closedown of door of drawing gas is realized by the closedown of extraction valve valve body, the control gear of existing extraction valve can use extraction valve linkage that extraction valve manipulation seat is carried out to confession press water or lets out press water usually, extraction valve linkage is a kind of existing apparatus well known in the art, extraction valve linkage is provided with press water import, pressurized water outlet, press water arrange mouth outward; Because the arrangement of extraction valve linkage in the control gear of existing extraction valve is unreasonable; make the control gear of existing extraction valve the valve body of extraction valve cannot be made quickly and reliably to close when steam turbine error protection is shut down; thus easily make the opposing steam flow in extraction line enter steam turbine, cause Steam Turbine Over-speed Accident to damage.
Summary of the invention
Technical problem to be solved by this invention is: will provide the control gear of extraction valve on a kind of steam turbine that the valve body of extraction valve can be made quickly and reliably to close.
In order to solve the problem, the technical solution used in the present invention is: the control gear of extraction valve on steam turbine, comprise water inlet manifold, the water intake of water inlet manifold is connected with pressure water source, the press water import that seat handled by extraction valve on steam turbine on each extraction line is connected with one end of a water inlet pipe respectively, the other end of every root water inlet pipe is connected with the water outlet of water inlet manifold respectively, be characterized in: on water inlet manifold, be in series with two successively can release the extraction valve linkage that press water in seat handled by extraction valve, each extraction valve linkage is provided with press water import, pressurized water outlet, press water arranges mouth outward, press water import on each extraction valve linkage, pressurized water outlet is all connected with water inlet manifold, the press water of extraction valve linkage is arranged mouth outward and is connected with water tank.
Further, the control gear of extraction valve on aforesaid steam turbine, wherein: the water inlet manifold outside two extraction valve linkages is respectively arranged with the first stop valve.
Further, the control gear of extraction valve on aforesaid steam turbine, wherein: the water inlet manifold between two extraction valve linkages is provided with the second stop valve.
Further, the control gear of extraction valve on aforesaid steam turbine, wherein: on every root water inlet pipe, be all provided with the 3rd stop valve.
Further, the control gear of extraction valve on aforesaid steam turbine, wherein: on water inlet manifold, be provided with the pressure gauge testing hydraulic pressure.
Further, the control gear of extraction valve on aforesaid steam turbine, wherein: on water inlet manifold, be provided with the water filter that can purify water.
Advantage of the present invention is: on steam turbine of the present invention, the control gear of extraction valve can make the valve body of extraction valve quickly and reliably cut out; thus when preventing steam turbine disorderly closedown in extraction line opposing steam flow enter in steam turbine, make steam turbine occur hypervelocity damage probability greatly reduce.
Accompanying drawing explanation
Fig. 1 is the structural representation of the control gear of extraction valve on steam turbine of the present invention.
Embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is described in further detail.
The control gear of extraction valve on steam turbine, as shown in Figure 1, comprise water inlet manifold 1, the water intake of water inlet manifold 1 is connected with pressure water source, in actual applications, pressure water source is generally condensate pump, the press water import that seat 21 handled by extraction valve on steam turbine 4 on each extraction line is connected with one end of a water inlet pipe 11 respectively, the other end of every root water inlet pipe 11 is connected with the water outlet of water inlet manifold 1 respectively, handle after in seat 21 valve body of extraction valve 2 can be made to open when press water to enter extraction valve by water inlet manifold 1, after press water in extraction valve manipulation seat 21 flows away, the valve body of extraction valve 2 can be closed automatically, water inlet manifold 1 is in series with two successively and can releases the extraction valve linkage 3 that press water in seat 21 handled by extraction valve, each extraction valve linkage 3 is provided with press water import, pressurized water outlet, press water arranges mouth outward, press water import on each extraction valve linkage 3, pressurized water outlet is all connected with water inlet manifold 1, the press water of extraction valve linkage 3 is arranged mouth outward and is connected with water tank 5, extraction valve linkage 3 is a kind of existing apparatus well known in the art, when steam turbine 4 normally works, press water import in extraction valve linkage 3, pressurized water outlet is connected, thus make water inlet manifold 1 can handle seat 21 to extraction valve to provide press water, and then the valve body of extraction valve 2 is opened, when steam turbine 4 breaks down protection shutdown, press water import in extraction valve linkage 3, pressurized water outlet disconnects mutually but pressurized water outlet and press water are arranged mouth outward and be connected, thus the press water supply that seat 21 handled by water inlet manifold 1 pair of extraction valve can be cut off, extraction valve can also be made to handle press water in seat 21 simultaneously, and ducted press water flows away fast from extraction valve linkage 3 between extraction valve manipulation seat 21 and extraction valve linkage 3, thus make the valve body quick closedown of extraction valve 2.Two extraction valve linkages 3 that water inlet manifold 1 is connected can be released when steam turbine 4 breaks down more fast in order to make extraction valve handle press water in seat 21, because if only arrange an extraction valve linkage 3 on water inlet manifold 1, press water in seat 21 handled by extraction valve can because this extraction valve linkage 3 damages and cannot be released fast, and after being arranged in series two extraction valve linkages 3, when use another one after one of them damages also can release the press water in extraction valve manipulation seat 21 in time.
In the present embodiment, the water inlet manifold 1 outside two extraction valve linkages 3 is respectively arranged with the first stop valve 31, arranging like this is to can conveniently change two extraction valve linkages 3.Further, the water inlet manifold 1 between two extraction valve linkages 3 is provided with the second stop valve 32, arranging like this is to can conveniently change single extraction valve linkage 3.Every root water inlet pipe 11 is all provided with the 3rd stop valve 33.Water inlet manifold 1 is provided with the pressure gauge 51 testing hydraulic pressure.Water inlet manifold 1 is provided with the water filter 52 that can purify water.
Beneficial effect of the present invention is: on steam turbine of the present invention, the control gear of extraction valve can make the valve body of extraction valve quickly and reliably cut out; thus when preventing steam turbine disorderly closedown in extraction line opposing steam flow enter in steam turbine, make steam turbine occur hypervelocity damage probability greatly reduce.
Claims (7)
1. the control gear of extraction valve on steam turbine, comprise water inlet manifold, the water intake of water inlet manifold is connected with pressure water source, the press water import that seat handled by extraction valve on steam turbine on each extraction line is connected with one end of a water inlet pipe respectively, the other end of every root water inlet pipe is connected with the water outlet of water inlet manifold respectively, it is characterized in that: on water inlet manifold, be in series with two successively can release the extraction valve linkage that press water in seat handled by extraction valve, each extraction valve linkage is provided with press water import, pressurized water outlet, press water arranges mouth outward, press water import on each extraction valve linkage, pressurized water outlet is all connected with water inlet manifold, the press water of extraction valve linkage is arranged mouth outward and is connected with water tank.
2. the control gear of extraction valve on steam turbine according to claim 1, is characterized in that: the water inlet manifold outside two extraction valve linkages is respectively arranged with the first stop valve.
3. the control gear of extraction valve on steam turbine according to claim 1 and 2, is characterized in that: the water inlet manifold between two extraction valve linkages is provided with the second stop valve.
4. the control gear of extraction valve on steam turbine according to claim 1 and 2, is characterized in that: on every root water inlet pipe, be all provided with the 3rd stop valve.
5. the control gear of extraction valve on steam turbine according to claim 3, is characterized in that: on every root water inlet pipe, be all provided with the 3rd stop valve.
6. the control gear of extraction valve on steam turbine according to claim 1 and 2, is characterized in that: on water inlet manifold, be provided with the pressure gauge testing hydraulic pressure.
7. the control gear of extraction valve on steam turbine according to claim 1 and 2, is characterized in that: on water inlet manifold, be provided with the water filter that can purify water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497342.3A CN105134313B (en) | 2015-08-14 | 2015-08-14 | The control device of extraction valve on steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497342.3A CN105134313B (en) | 2015-08-14 | 2015-08-14 | The control device of extraction valve on steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134313A true CN105134313A (en) | 2015-12-09 |
| CN105134313B CN105134313B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497342.3A Active CN105134313B (en) | 2015-08-14 | 2015-08-14 | The control device of extraction valve on steam turbine |
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| Country | Link |
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| CN (1) | CN105134313B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701531A (en) * | 2009-11-27 | 2010-05-05 | 杭州中能汽轮动力有限公司 | Overflow steam extraction adjusting device of industrial drive steam turbine and control method thereof |
| CN101967998A (en) * | 2010-10-28 | 2011-02-09 | 广东理文造纸有限公司 | System for recycling control water of steam turbine and drained water of gland heater |
| CN201943760U (en) * | 2011-03-08 | 2011-08-24 | 宝钢集团新疆八一钢铁有限公司 | Improved air exhaust valve set of turboset |
| CN102392694A (en) * | 2011-11-28 | 2012-03-28 | 北京北重汽轮电机有限责任公司 | Heating cogeneration generator unit |
| CN102575530A (en) * | 2009-09-22 | 2012-07-11 | 西门子公司 | Power plant system having overload control valve |
| CN102720551A (en) * | 2012-07-02 | 2012-10-10 | 上海汽轮机厂有限公司 | Control method for steam thermal system with dual-machine backheating steam extraction |
| CN203925609U (en) * | 2014-05-28 | 2014-11-05 | 郑州荣奇热电能源有限公司 | A kind of steam inlet device of small turbine |
| CN204899989U (en) * | 2015-08-14 | 2015-12-23 | 江苏永钢集团有限公司 | Controlling means of extraction valve on steam turbine |
-
2015
- 2015-08-14 CN CN201510497342.3A patent/CN105134313B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575530A (en) * | 2009-09-22 | 2012-07-11 | 西门子公司 | Power plant system having overload control valve |
| CN101701531A (en) * | 2009-11-27 | 2010-05-05 | 杭州中能汽轮动力有限公司 | Overflow steam extraction adjusting device of industrial drive steam turbine and control method thereof |
| CN101967998A (en) * | 2010-10-28 | 2011-02-09 | 广东理文造纸有限公司 | System for recycling control water of steam turbine and drained water of gland heater |
| CN201943760U (en) * | 2011-03-08 | 2011-08-24 | 宝钢集团新疆八一钢铁有限公司 | Improved air exhaust valve set of turboset |
| CN102392694A (en) * | 2011-11-28 | 2012-03-28 | 北京北重汽轮电机有限责任公司 | Heating cogeneration generator unit |
| CN102720551A (en) * | 2012-07-02 | 2012-10-10 | 上海汽轮机厂有限公司 | Control method for steam thermal system with dual-machine backheating steam extraction |
| CN203925609U (en) * | 2014-05-28 | 2014-11-05 | 郑州荣奇热电能源有限公司 | A kind of steam inlet device of small turbine |
| CN204899989U (en) * | 2015-08-14 | 2015-12-23 | 江苏永钢集团有限公司 | Controlling means of extraction valve on steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105134313B (en) | 2016-09-14 |
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