CN2531185Y - Integrated electrohydraulic control quick-shutting off valve - Google Patents
Integrated electrohydraulic control quick-shutting off valve Download PDFInfo
- Publication number
- CN2531185Y CN2531185Y CN 02211114 CN02211114U CN2531185Y CN 2531185 Y CN2531185 Y CN 2531185Y CN 02211114 CN02211114 CN 02211114 CN 02211114 U CN02211114 U CN 02211114U CN 2531185 Y CN2531185 Y CN 2531185Y
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- valve
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Abstract
The utility model provides an integrated type electro-hydraulic control fast closing valve solving the problem of fixing a check door on a steam extraction pipeline. The check door slowly responses the closing, and can be blocked on occasion during the closing, which causes that: the closing is imprecise, the extracted steam flows backwards, and the accident happens. The utility model has technical points in that: a butterfly valve, an actuator, and a conversion mechanism are included, the actuator comprises an oil source, an accumulator, a control valve block, and an oil cylinder, the oil port of the accumulator is connected with an A port of a poppet valve, a B port of the poppet valve is connected with a rod cavity of the oil cylinder, a cavity without rod of the oil cylinder is connected with an A port of another poppet valve, a B port of the poppet valve is connected with the dynamic oil source, X ports of the two poppet valves are parallel and connected with the dynamic oil source by an electromagnetic valve, a piston of the oil cylinder is connected with a rack, the rack is meshed with a gear, a shaft key of the butterfly valve is connected with the gear. The utility model is used for the steam extraction pipeline of the steam turbine unit in the thermal power plant, when the turbine unit loads rejection, or an accident happens, the valve can close the steam extraction pipeline avoiding the backward flow of the steam.
Description
[technical field]
The utility model relates to a kind of valve, on particularly a kind of extraction line that is applied in the steam turbine in thermal power plant group, when the unit removal of load or when having an accident, extraction line can be turn-offed the valve to prevent that steam from flowing backwards.
[background technique]
Rapid cut-off valve is to be applied on the extraction line of steam turbine in thermal power plant group, when the unit removal of load or when having an accident, extraction line can be turn-offed a kind of valve to prevent that steam from flowing backwards.For this reason State Power Corporation in " preventing 25 important requirements of electrical production major accident " that it issues 9.1.10 bar lay special stress on " the adjusting of the unit that draws gas drawn gas non-return flap should be tightly, the interlocking reliable in action; and must be provided with can quick closedown the cut-off gate that draws gas, cause hypervelocity to prevent to draw gas to flow backwards ".Therefore rapid cut-off valve be guarantee to draw gas unit safety operation, prevent that extraction line steam from causing the important safety equipment of steam turbine hypervelocity accident.
The unit that draws gas at present causes that the measure of hypervelocity is, installs non-return flap on extraction line preventing to draw gas to flow backwards.When flowing backwards when drawing gas, the air pressure that is produced is closed non-return flap automatically.Practice shows that this non-return flap is closed low-response, closes closed procedure and occurs the bite phenomenon sometimes, and it is close to cause being not closed completely, and the refluence of drawing gas is accidents caused.
[summary of the invention]
The purpose of this utility model is to provide a kind of integrating electro-hydraulic control rapid cut-off valve that can avoid above-mentioned deficiency.
The purpose of this utility model is achieved in that it comprises three eccentric butterfly valve and electric control system, is characterized in that; It also comprises hydraulic actuator and machinery conversion mechanism, hydraulic actuator is an integrated hydraulic control system, it is by the power oil sources, accumulator, control valve piece and oil cylinder are formed, the accumulator hydraulic fluid port is linked the A mouth of cone valve 5.1, the B mouth of this cone valve 5.1 is linked the rod chamber of oil cylinder, the rodless cavity of oil cylinder is connected in the A mouth of another cone valve 5.2, the B mouth of cone valve 5.2 is connected in the power oil sources, above-mentioned two cone valves 5.1,5.2 the parallel connection of X mouth after be connected in the power oil sources by solenoid valve, the piston of oil cylinder is connected with tooth bar, machinery conversion mechanism is the rack and pinion engagement, three eccentric butterfly valve axle key connection gear.Working procedure is: be full of pressurized gas in the accumulator leather bag at ordinary times, leather bag has high pressure oil outward, after the utility model is received the quick closing valve signal, solenoid valve gets on the one hand, control oil in two cone valve epicoeles is entered oil sources, two cone valves are opened, and oil hydraulic circuit is connected on the other hand, and the pressurized gas in the accumulator leather bag expand rapidly, the outer high pressure oil of leather bag enters the A mouth of cone valve 5.1, enter the rod chamber of oil cylinder through the B mouth, the oil of rodless cavity is through the A of cone valve 5.2 mouth, the B mouth flows back to fuel tank, piston-advance, tooth bar is along with moving ahead, the gear rotation drives the three eccentric butterfly valve axle and also rotates, and three eccentric butterfly valve is realized quick closedown.
The utility model compared with prior art, the advantage that has is:
1, the valve closing response is fast, and the quick closing valve time was less than 0.5 second after tested;
2, it is by the hydraulic driving valve, and in closing closed procedure, reliability improves greatly;
3, because valve is selected three eccentric butterfly valve for use, its sealing is very good.
4, its oil-collecting source, actuator and control mechanism are in one, and compact structure is installed, uses all very convenient.
[description of drawings]
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the right elevation of Fig. 1
Fig. 3 is the utility model hydraulic schematic diagram.
[embodiment]
It comprises three eccentric butterfly valve 6, hydraulic actuator, machinery conversion mechanism and electrical control mechanism, wherein hydraulic actuator is an integrated hydraulic control system, it is by power oil sources 7, accumulator 1, control valve piece 5 and oil cylinder 2 are formed, the accumulator hydraulic fluid port is linked the A mouth of cone valve 5.1, the B mouth of this cone valve 5.1 is linked the rod chamber 2.1 of oil cylinder, the rodless cavity 2.3 of oil cylinder is connected in the A mouth of another cone valve 5.2, the B mouth of cone valve 5.2 is connected in the power oil sources, above-mentioned two cone valves 5.1,5.2 the parallel connection of X mouth after be connected in the power oil sources by solenoid valve 5.3, the piston 2.2 of oil cylinder 2 is connected with tooth bar 3, machinery conversion mechanism is tooth bar 3 and gear 4 engagements, three eccentric butterfly valve axle 6.1 key connection gear 4.Working procedure is: be full of pressurized gas in the accumulator leather bag at ordinary times, leather bag has high pressure oil outward, after the utility model is received the quick closing valve signal, solenoid valve 5.3 gets on the one hand, control oil in two cone valve epicoeles is entered oil sources, two cone valves are opened, and oil hydraulic circuit is connected on the other hand, and the pressurized gas in the accumulator leather bag expand rapidly, the outer high pressure oil of leather bag enters the A mouth of cone valve 5.1, enter the rod chamber of oil cylinder through the B mouth, the oil of rodless cavity is through the A of cone valve 5.2 mouth, the B mouth flows back to oil sources, piston-advance, tooth bar is along with moving ahead, the gear rotation drives the three eccentric butterfly valve axle and also rotates, and three eccentric butterfly valve is realized quick closedown.
In order to realize that valve opening is regulated, usefulness more than one, present embodiment is provided with valve and normally opens, closes the loop circuit at a slow speed, is realized by little latus rectum reversing solenoid valve 5.4.Under solenoid valve 5.3 uncharged situations, the 1YA electromagnet of reversing solenoid valve 5.4 gets electric, and pressure oil enters cylinder rod chamber 2.1, and piston drives the rack drives valve and closes at a slow speed; The 2YA electromagnet of solenoid valve 5.4 gets electric, and pressure oil enters oil cylinder rodless cavity 2.3, and piston drives the rack drives valve and opens at a slow speed.
Claims (1)
1, a kind of integrating electro-hydraulic control rapid cut-off valve, it comprises three eccentric butterfly valve and electric control system, it is characterized in that; It also comprises hydraulic actuator and machinery conversion mechanism, hydraulic actuator is an integrated hydraulic control system, it is made up of power oil sources, accumulator, control valve piece and oil cylinder, the accumulator hydraulic fluid port is linked the A mouth of cone valve, the B mouth of this cone valve is linked the rod chamber of oil cylinder, the rodless cavity of oil cylinder is connected in the A mouth of another cone valve, the B mouth of this cone valve is connected in the power oil sources, be connected in the power oil sources by solenoid valve after the X mouth parallel connection of above-mentioned two cone valves, the piston of oil cylinder is connected with tooth bar, machinery conversion mechanism is the rack and pinion engagement, three eccentric butterfly valve axle key connection gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211114 CN2531185Y (en) | 2002-04-09 | 2002-04-09 | Integrated electrohydraulic control quick-shutting off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211114 CN2531185Y (en) | 2002-04-09 | 2002-04-09 | Integrated electrohydraulic control quick-shutting off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2531185Y true CN2531185Y (en) | 2003-01-15 |
Family
ID=33691098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02211114 Expired - Lifetime CN2531185Y (en) | 2002-04-09 | 2002-04-09 | Integrated electrohydraulic control quick-shutting off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2531185Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360813C (en) * | 2005-05-17 | 2008-01-09 | 沈阳东北电力调节技术有限公司 | Integrated electro-hydraulic actuator capable of carrying out quick action and adjustment |
| CN1865666B (en) * | 2005-05-17 | 2011-09-14 | 沈阳东北电力调节技术有限公司 | Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine |
| CN102620040A (en) * | 2012-04-23 | 2012-08-01 | 沈阳东北电力调节技术有限公司 | Electrohydraulic system for driving large-size quarter-turn valve by using solar low-power power supply |
| CN103982696A (en) * | 2013-08-16 | 2014-08-13 | 上海汇益控制系统股份有限公司 | Regulating type hydraulic control butterfly valve executing mechanism |
| CN104279197A (en) * | 2014-10-30 | 2015-01-14 | 辽宁电力控制技术有限公司 | Integrated electro-hydraulic actuator |
| CN104329318A (en) * | 2014-10-31 | 2015-02-04 | 沈阳东北电力调节技术有限公司 | Rotary oil cylinder capable of preventing loosening of piston and rack |
| CN108843844A (en) * | 2018-08-23 | 2018-11-20 | 沈阳东北电力调节技术有限公司 | Fire prevention electro-hydraulic actuator |
| CN111425651A (en) * | 2020-03-03 | 2020-07-17 | 中国石化销售股份有限公司华南分公司 | Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism |
-
2002
- 2002-04-09 CN CN 02211114 patent/CN2531185Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360813C (en) * | 2005-05-17 | 2008-01-09 | 沈阳东北电力调节技术有限公司 | Integrated electro-hydraulic actuator capable of carrying out quick action and adjustment |
| CN1865666B (en) * | 2005-05-17 | 2011-09-14 | 沈阳东北电力调节技术有限公司 | Rapid cut-off valve for regenerative extraction steam pipeline of steam turbine |
| CN102620040A (en) * | 2012-04-23 | 2012-08-01 | 沈阳东北电力调节技术有限公司 | Electrohydraulic system for driving large-size quarter-turn valve by using solar low-power power supply |
| CN102620040B (en) * | 2012-04-23 | 2013-09-04 | 沈阳东北电力调节技术有限公司 | Electrohydraulic system for driving large-size quarter-turn valve by using solar low-power supply |
| CN103982696A (en) * | 2013-08-16 | 2014-08-13 | 上海汇益控制系统股份有限公司 | Regulating type hydraulic control butterfly valve executing mechanism |
| CN103982696B (en) * | 2013-08-16 | 2016-05-18 | 上海汇益控制系统股份有限公司 | Adjustment type hydraulic butterfly valve executing agency |
| CN104279197A (en) * | 2014-10-30 | 2015-01-14 | 辽宁电力控制技术有限公司 | Integrated electro-hydraulic actuator |
| CN104329318A (en) * | 2014-10-31 | 2015-02-04 | 沈阳东北电力调节技术有限公司 | Rotary oil cylinder capable of preventing loosening of piston and rack |
| CN108843844A (en) * | 2018-08-23 | 2018-11-20 | 沈阳东北电力调节技术有限公司 | Fire prevention electro-hydraulic actuator |
| WO2020037760A1 (en) * | 2018-08-23 | 2020-02-27 | 沈阳东北电力调节技术有限公司 | Fireproof electro-hydraulic actuator |
| CN111425651A (en) * | 2020-03-03 | 2020-07-17 | 中国石化销售股份有限公司华南分公司 | Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN SIRUITE SCIENCE INVESTMENT DEVELOPMENT CO. Free format text: FORMER OWNER: DONGBEI POWER REGULATION TECH INST, SHENYANG CITY Effective date: 20040827 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040827 Address after: Xi'an Road, Shahekou District of Dalian City, Liaoning province 116021 No. 66 Junan apartment No. 1410 Patentee after: Dalian science and Technology Investment Development Co., Ltd. Address before: 110036 Northeast Power Regulation Technology Research Institute, No. 134 Changjiang street, Huanggu District, Liaoning, Shenyang Patentee before: Shenyang Northeast Inst. of Power Regulating Techn |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120409 Granted publication date: 20030115 |