CN201666218U - Butterfly valve controlled device for hydroelectric generating set - Google Patents
Butterfly valve controlled device for hydroelectric generating set Download PDFInfo
- Publication number
- CN201666218U CN201666218U CN2010201420642U CN201020142064U CN201666218U CN 201666218 U CN201666218 U CN 201666218U CN 2010201420642 U CN2010201420642 U CN 2010201420642U CN 201020142064 U CN201020142064 U CN 201020142064U CN 201666218 U CN201666218 U CN 201666218U
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- Prior art keywords
- valve
- control
- butterfly
- port
- mouth
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- 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.)
- Expired - Fee Related
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model provides a butterfly valve controlled device for hydroelectric generating set. The device comprises a main control valve, a locking electromagnetic distributing valve and some other relative control devices. The main control valve adopts a pilot-operated electro-hydraulic valve (1) whose pilot-operated pressure oil port P1 is connected to the control port A2 of a motion valve (2); the push rod (2a) of the motion valve (2) controls the piston rod (5c) of the butterfly valve locking oil cylinder (5); the main valve pressure oil port P1a of the pilot-operated electro-hydraulic valve (1) is connected with the control port A3 of a hydraulic control one-way valve (3) whose X port is then connected with the control port A2 of the motion valve (2); the B3 port of the hydraulic control one-way valve (3) is connected with the pressure oil; the locking electromagnetic distributing valve (4) is connected with port A4 of the pressure oil and also connected with the pressure oil port of the motion valve (2); port B4 of the locking electromagnetic distributing valve (4) is connected to the pull-out side of the butterfly valve locking oil cylinder (5) and the pull-in side of the butterfly valve locking oil cylinder (5) is connected with the control port of the bypass-valve (6).
Description
Technical field
The utility model relates to a kind of hydraulic generator unit butterfly-valve controller, and butterfly valve is the Protective valve of hydraulic generator unit.When butterfly valve is opened, upper pond and turbine gate mechanism have been communicated with, for the rotation of hydraulic generator unit provides the hydrodynamic(al) energy; When butterfly valve cuts out, just cut off the water source.When hydraulic generator unit rotating speed continued to rise, butterfly valve must cut out reliably as last pipe protection.
Background technique
Traditional butterfly valve final control element comprises: lock ingot electromagnetism voltage distribution valve, switch electromagnetism voltage distribution valve, differential voltage distribution valve, four port valve, fuel tap, bypass valve, lock ingot etc.
The flow process of opening butterfly valve is: lock ingot electromagnetism voltage distribution valve gets electronic work, by switching oil circuit fuel tap, bypass valve are opened, will be locked ingot simultaneously and extract, collect extract the state contact point signal after, switch electromagnetism voltage distribution valve gets electronic work, promotes four port valve spool to opening end butterfly valve is opened.Last involution lock ingot electromagnetism voltage distribution valve input lock ingot makes fuel tap, bypass valve close simultaneously.
The flow process of closing butterfly valve is: lock ingot electromagnetism voltage distribution valve gets electronic work, by switching oil circuit fuel tap, bypass valve are opened, will be locked ingot simultaneously and extract, collect extract the state contact point signal after, involution switch electromagnetism voltage distribution valve promotes four port valve spool to shutdown side butterfly valve cuts out.Also drop into lock ingot and involution lock ingot electromagnetism voltage distribution valve at last, fuel tap, bypass valve are closed.Ready for drive valve next time.
From above operating process as can be seen, switch electromagnetism voltage distribution valve gets electronic work or involution must be satisfied a precondition: that is locked ingot exactly and will extract fully, otherwise lock ingot piston rod will be stuck by butterfly valve, causes the lock ingot to damage and normally opening and closing of butterfly valve.If just in time be that water turbine control system fault needs the butterfly valve emergency cut-off this moment, consequence is hardly imaginable.
Traditional practice is to detect the input of lock ingot and extract state with position limit switch, we know, the installation elevation of butterfly valve is lower in the water power plant, add and be wetting system, dewfall or a small amount of infiltration are arranged unavoidably, the reliability of position limit switch work can be had a greatly reduced quality so, and unavoidable malfunction or tripping directly influence the proper functioning of butterfly valve and the safe operation in hydraulic generator unit and even whole water power plant.
Summary of the invention
The purpose of this utility model is a kind of hydraulic generator unit butterfly-valve controller of design, avoids because of lock ingot position contact point signal and real work position when inconsistent, and butterfly valve opens or cuts out and makes lock ingot piston rod stuck and be out of shape, and causes the whole system can't proper functioning.
The technical solution of the utility model: hydraulic generator unit butterfly-valve controller of the present utility model comprises main control valve, lock ingot electromagnetism voltage distribution valve and relevant control valve thereof, its main control valve adopts the leading type electro hydraulic valve, the pilot pressure hydraulic fluid port P1 of leading type electro hydraulic valve is connected with the control mouth A2 of stroke valve, the piston rod of the push rod control butterfly valve lock ingot oil cylinder of stroke valve; The main valve pressure hydraulic fluid port P1a of leading type electro hydraulic valve is connected with the control mouth A3 of Pilot operated check valve, and the X mouth of Pilot operated check valve is connected with the control mouth A2 of stroke valve, and the B3 mouth of Pilot operated check valve connects pressure oil; The A4 mouth that lock ingot electromagnetism voltage distribution valve connects pressure oil is connected with the pressure hydraulic fluid port of stroke valve, and the B4 mouth of lock ingot electromagnetism voltage distribution valve connects the side of extracting of butterfly valve lock ingot oil cylinder, and the input side of butterfly valve lock ingot oil cylinder is connected with the control mouth of bypass valve.
Advantage of the present utility model:
This butterfly valve control system mechanically detects the real work position of locking the ingot piston rod with the stroke valve, and is fault-tolerant mutually with the position contact point signal of position limit switch on the one hand; On oil circuit, main control valve is carried out locking by stroke valve and Pilot operated check valve on the other hand, have only after the lock ingot is really extracted fully and just can remove to operate butterfly valve for main control valve provides pressure oil-source by the stroke valve.Thoroughly avoided because of lock ingot position contact point signal and real work position when inconsistent, butterfly valve opens or cuts out and makes lock ingot piston rod stuck and be out of shape, and causes the whole system can't proper functioning.
Description of drawings
Fig. 1 is the utility model hydraulic generator unit butterfly-valve controller structural principle schematic representation.
Embodiment
As shown in Figure 1: hydraulic generator unit butterfly-valve controller of the present utility model comprises main control valve, lock ingot electromagnetism voltage distribution valve and relevant control valve thereof, its main control valve adopts leading type electro hydraulic valve 1, the pilot pressure hydraulic fluid port P1 of leading type electro hydraulic valve 1 is connected with the control mouth A2 of stroke valve 2, the piston rod 5c of the push rod 2a control butterfly valve locked cylinder 5 of stroke valve 2; The main valve pressure hydraulic fluid port P1a of leading type electro hydraulic valve 1 is connected with the control mouth A3 of Pilot operated check valve 3, and the X mouth of Pilot operated check valve 3 is connected with the control mouth A2 of stroke valve 2, and the B3 mouth of Pilot operated check valve 3 connects pressure oil; The A4 mouth that lock ingot electromagnetism voltage distribution valve 4 connects pressure oil is connected with the pressure hydraulic fluid port of stroke valve 2, and the B4 mouth of lock ingot electromagnetism voltage distribution valve 4 connects the side of extracting of butterfly valve lock ingot oil cylinder 5, and the input side of butterfly valve lock ingot oil cylinder 5 is connected with the control mouth of bypass valve 6.The 7th, pressure oil tank, the 8th, butterfly valve operating cyloinder.
1, the push rod 2a of stroke valve 2 is installed on the end of the piston rod 5c of butterfly valve locked cylinder 5, and the stroke valve detects the working position of lock ingot oil cylinder piston, the directly mechanical displacement of reacting piston bar.
2, stroke valve 2 is serially connected on the pilot pressure oil circuit of main control valve-leading type electro hydraulic valve 1, does not have switch operating position (promptly locking ingot does not extract fully) preceding at the spool of stroke valve 2, and the leading type electro hydraulic valve does not have pressure oil to move.
3, on the principal pressure oil circuit Pilot operated check valve 3 is set, is controlled by stroke valve 2, provide pressure oil-source for main control valve-leading type electro hydraulic valve 1 conditionally.It is outer for interior row that the guide controls oil.The system acting principle that constitutes:
When 1, needing opening butterfly valve, lock ingot solenoid valve 4 is extracted side 5a and is got electronic work, and pressure oil is introduced butterfly valve lock ingot oil cylinder 5, extracts side and extracts the lock ingot; Simultaneously the control chamber of bypass valve 6 is connected oil extraction, open bypass valve 6; After the lock ingot is extracted fully, the push rod 2a of stroke valve 2 is locked ingot piston rod 5a jacking, makes stroke valve 2 switch operating positions, and pressure oil is offered leading type electro hydraulic valve 1 and Pilot operated check valve 3, leading type electro hydraulic valve 1 open side action then, control butterfly valve operating cyloinder 8 is opened butterfly valve.Lock ingot solenoid valve 4 at last and drop into side 5b and get electricly, drop into the lock ingot, close bypass valve.The stroke valve resets then.
When 2, need closing butterfly valve, at first still lock ingot solenoid valve 4 and extract side 5a and get electronic work, pressure oil is introduced butterfly valve lock ingot oil cylinder 5, extract side and extract the lock ingot, simultaneously the control chamber of bypass valve 6 is connected oil extraction and open bypass valve 6; After the lock ingot was extracted fully, the push rod of stroke valve 2 was locked ingot piston rod 5c jacking, makes stroke valve 2 switch operating positions.Pressure oil is offered leading type electro hydraulic valve 1 and Pilot operated check valve 3, and leading type electro hydraulic valve 1 is closed the side action then, closes butterfly valve.Lock the ingot solenoid valve at last and drop into side and get electricly, drop into the lock ingot, close bypass valve.
Claims (1)
1. hydraulic generator unit butterfly-valve controller, comprise main control valve, lock ingot electromagnetism voltage distribution valve and relevant control valve thereof, it is characterized in that: main control valve adopts leading type electro hydraulic valve (1), the pilot pressure hydraulic fluid port P1 of leading type electro hydraulic valve (1) is connected with the control mouth A2 of stroke valve (2), the piston rod (5c) of push rod (2a) the control butterfly valve lock ingot oil cylinder (5) of stroke valve (2); The main valve pressure hydraulic fluid port P1a of leading type electro hydraulic valve (1) is connected with the control mouth A3 of Pilot operated check valve (3), and the X mouth of Pilot operated check valve (3) is connected with the control mouth A2 of stroke valve (2), and the B3 mouth of Pilot operated check valve (3) connects pressure oil; The A4 mouth that lock ingot electromagnetism voltage distribution valve (4) connects pressure oil is connected with the pressure hydraulic fluid port of stroke valve (2), the B4 mouth of lock ingot electromagnetism voltage distribution valve (4) connects the side of extracting of butterfly valve lock ingot oil cylinder (5), and the input side of butterfly valve lock ingot oil cylinder (5) is connected with the control mouth of bypass valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201420642U CN201666218U (en) | 2010-03-23 | 2010-03-23 | Butterfly valve controlled device for hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201420642U CN201666218U (en) | 2010-03-23 | 2010-03-23 | Butterfly valve controlled device for hydroelectric generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666218U true CN201666218U (en) | 2010-12-08 |
Family
ID=43267177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201420642U Expired - Fee Related CN201666218U (en) | 2010-03-23 | 2010-03-23 | Butterfly valve controlled device for hydroelectric generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799606A (en) * | 2018-07-31 | 2018-11-13 | 福建省水利水电勘测设计研究院 | A kind of unit water inlet weight butterfly valve promptly closes valve circuit |
-
2010
- 2010-03-23 CN CN2010201420642U patent/CN201666218U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799606A (en) * | 2018-07-31 | 2018-11-13 | 福建省水利水电勘测设计研究院 | A kind of unit water inlet weight butterfly valve promptly closes valve circuit |
| CN108799606B (en) * | 2018-07-31 | 2023-12-19 | 福建省水利水电勘测设计研究院 | Emergency valve closing circuit of unit water inlet heavy hammer butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20120323 |