CN204899989U - Controlling means of extraction valve on steam turbine - Google Patents

Controlling means of extraction valve on steam turbine Download PDF

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Publication number
CN204899989U
CN204899989U CN201520609819.8U CN201520609819U CN204899989U CN 204899989 U CN204899989 U CN 204899989U CN 201520609819 U CN201520609819 U CN 201520609819U CN 204899989 U CN204899989 U CN 204899989U
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CN
China
Prior art keywords
extraction valve
water inlet
steam turbine
water
extraction
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.)
Withdrawn - After Issue
Application number
CN201520609819.8U
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Chinese (zh)
Inventor
张波
黄晓春
李维志
顾颖颖
郁骎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Yonggang Group Co Ltd
Original Assignee
Jiangsu Yonggang Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Yonggang Group Co Ltd filed Critical Jiangsu Yonggang Group Co Ltd
Priority to CN201520609819.8U priority Critical patent/CN204899989U/en
Application granted granted Critical
Publication of CN204899989U publication Critical patent/CN204899989U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a controlling means of extraction valve on steam turbine, including water inlet manifold, water inlet manifold's water inlet links to each other with the pressure water source, and the seat was handled to extraction valve on the steam turbine on each extraction line pressure water import is linked together with a water inlet branch pipe's one end respectively, and every water inlet branch pipe's the other end is linked together with water inlet manifold's delivery port respectively, the extraction valve aggregate unit that establishes ties in proper order on water inlet manifold and have two can let out the extraction valve and handle pressure water in the seat. Valve body that foretell controlling means of extraction valve on steam turbine enabled the extraction valve fast, close reliably to during the steam turbine is gone into in steam backward flow in the extraction line when preventing steam turbine accidental shutdown, make the steam turbine take place the probability greatly reduced who exceeds the speed limit and damage.

Description

The control gear of extraction valve on steam turbine
Technical field
The utility model relates to turbine discharge system, is 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.
Model utility content
Technical problem to be solved in the utility model 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 adopted in the utility model 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 utility model is: on steam turbine described in the utility model, 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 described in the utility model.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model 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.
The beneficial effects of the utility model are: on steam turbine described in the utility model, 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.
CN201520609819.8U 2015-08-14 2015-08-14 Controlling means of extraction valve on steam turbine Withdrawn - After Issue CN204899989U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520609819.8U CN204899989U (en) 2015-08-14 2015-08-14 Controlling means of extraction valve on steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520609819.8U CN204899989U (en) 2015-08-14 2015-08-14 Controlling means of extraction valve on steam turbine

Publications (1)

Publication Number Publication Date
CN204899989U true CN204899989U (en) 2015-12-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520609819.8U Withdrawn - After Issue CN204899989U (en) 2015-08-14 2015-08-14 Controlling means of extraction valve on steam turbine

Country Status (1)

Country Link
CN (1) CN204899989U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134313A (en) * 2015-08-14 2015-12-09 江苏永钢集团有限公司 Control device of steam extracting valve on steam turbine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134313A (en) * 2015-08-14 2015-12-09 江苏永钢集团有限公司 Control device of steam extracting valve on steam turbine
CN105134313B (en) * 2015-08-14 2016-09-14 江苏永钢集团有限公司 The control device of extraction valve on steam turbine

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20151223

Effective date of abandoning: 20160914

C25 Abandonment of patent right or utility model to avoid double patenting