CN103511006B - A kind of emergency governor pilot valve - Google Patents
A kind of emergency governor pilot valve Download PDFInfo
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- CN103511006B CN103511006B CN201310445303.XA CN201310445303A CN103511006B CN 103511006 B CN103511006 B CN 103511006B CN 201310445303 A CN201310445303 A CN 201310445303A CN 103511006 B CN103511006 B CN 103511006B
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- chamber
- guiding valve
- oil
- grease chamber
- reset
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Abstract
The present invention relates to a kind of emergency governor pilot valve, comprise interconnective cover plate and housing, there is in housing the first cavity, pressure oil chamber, Su Guan grease chamber, oil revolute chamber and reset grease chamber is provided with successively in described first cavity, intert in first cavity and be provided with guiding valve, guiding valve can slidably reciprocate in pressure oil chamber, Su Guan grease chamber, oil revolute chamber and reset grease chamber; One end of guiding valve is connected with convex shoulder, and described convex shoulder is hinged on housing, and convex shoulder is provided with U-type groove, is provided with slidably locating stud in U-type groove, and described guiding valve is connected with convex shoulder by locating stud; The present invention cancels the handle design of old device, and by resetting, oil injects reset grease chamber, realizes automatically reseting of guiding valve, the present invention operates at the scene without the need to personnel, realize remote auto to control, reduce workload and company's human cost of operator, decrease the security risk of operator.
Description
Technical field
The present invention relates to a kind of emergency governor pilot valve, this device is widely used in, in the rotating machineries such as steam turbine, compressor and blower, belonging to a part for unit safety protective system.
Background technique
Mechanical hydraulic-pressure type emergency governor pilot valve is the proterctive equipment of steam turbine, with emergency overspeed governor with the use of, realize unit mechanical trip protection.Working principle is when steam turbine breaks down in running, and emergency governor pilot valve closes oil by speed of releasing to be caused quick-closing valve and servo valve quick closedown and force unit emergency shutdown.Current domestic unit adopts manual mode and pull-up handle to reset usually, and along with the development of science and technology, unit allocation protective system more and more comes centralization and automation, and old device can not meet system requirements.On-site manual operation not only increases workload and company's human cost of operator, and there is certain personal security risk, does not meet the development trend of control system.
Summary of the invention
In order to solve the problems of the technologies described above, the object of this invention is to provide a kind of emergency governor pilot valve, realize automatically reseting of guiding valve by injecting the oil that resets.
In order to realize above-mentioned object, present invention employs following technological scheme:
A kind of emergency governor pilot valve, comprise interconnective cover plate and housing, there is in housing the first cavity, pressure oil chamber, Su Guan grease chamber, oil revolute chamber and reset grease chamber is provided with successively in described first cavity, intert in first cavity and be provided with guiding valve, guiding valve can slidably reciprocate in pressure oil chamber, Su Guan grease chamber, oil revolute chamber and reset grease chamber; One end of guiding valve is connected with convex shoulder, and described convex shoulder is hinged on housing, and convex shoulder is provided with U-type groove, is provided with slidably locating stud in U-type groove, and described guiding valve is connected with convex shoulder by locating stud; Position near two ends in described first cavity is inlaid with the first sleeve, the second sleeve respectively, pressure oil chamber is positioned at the first sleeve, oil revolute chamber and reset grease chamber are all positioned at the second sleeve, and the part in the first cavity between pressure oil chamber and oil revolute chamber is Su Guan grease chamber; The portion of external described guiding valve being positioned at oil revolute chamber is set with spring, the right side wall of oil revolute chamber is also provided with spring seat, the left end that guiding valve is positioned at the part of oil revolute chamber is provided with boss, one end and the boss of described spring offset, the other end and spring seat offset, and the part that described guiding valve is positioned at reset grease chamber is socketed with piston; Described guiding valve is positioned at Su Guan grease chamber and is provided with near the position of pressure oil chamber the first sealing station that can be used to cut off pressure oil chamber and Su Guan grease chamber; Described guiding valve is positioned at Su Guan grease chamber and is provided with near the position of oil revolute chamber the second sealing station that can be used to cut off Su Guan grease chamber and oil revolute chamber.
Preferably: described cover plate is provided with for detecting the contactless position switch of guiding valve at the first empty intracavitary locations.
Preferably: described housing is provided with the filler opening be communicated with pressure oil chamber and the reset hydraulic fluid port be communicated with reset grease chamber, is provided with attachment hole between reset grease chamber and oil revolute chamber.The arranging of attachment hole can effectively be avoided resetting when oil injects, and pressure is excessive to cause damage to guiding valve and piston.
Beneficial effect of the present invention is: the present invention cancels the handle design of old device, by resetting, oil injects reset grease chamber, realize automatically reseting of guiding valve, the present invention operates at the scene without the need to personnel, realize remote auto to control, reduce workload and company's human cost of operator, decrease the security risk of operator; And the present invention can also exchange with old device, reduce design cost, also can easily for former old unit carries out control system upgrading.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is external structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, detailed description is made to a kind of emergency governor pilot valve of the present invention preferred implementation:
A kind of emergency governor pilot valve as shown in Figure 1 and Figure 2, comprise interconnective cover plate 1 and housing 2, there is in housing 2 first cavity 11, pressure oil chamber 12, Su Guan grease chamber 13, oil revolute chamber 14 and reset grease chamber 15 is provided with successively in described first cavity 11, intert in first cavity 11 and be provided with guiding valve 4, guiding valve 4 can slidably reciprocate in pressure oil chamber 12, Su Guan grease chamber 13, oil revolute chamber 14 and reset grease chamber 15; One end of guiding valve 4 is connected with convex shoulder 7, and described convex shoulder 7 is hinged on housing 2, and convex shoulder 7 is provided with U-type groove 16, is provided with slidably locating stud 17 in U-type groove 16, and described guiding valve 4 is connected with convex shoulder 7 by locating stud 17; The first sleeve 3, second sleeve 5 is inlaid with respectively near the position at two ends in described first cavity 11, pressure oil chamber 12 is positioned at the first sleeve 3, the part that oil revolute chamber 14 and reset grease chamber 15 are all positioned in the second sleeve 5, first cavity 11 between pressure oil chamber 12 and oil revolute chamber 14 is Su Guan grease chamber 13.
On described guiding valve, 4 portion of external being positioned at oil revolute chamber 14 are set with spring 24, the right side wall 22 of oil revolute chamber 14 is also provided with spring seat 21, the left end that guiding valve 4 is positioned at the part of oil revolute chamber 14 is provided with boss 23, one end and the boss 23 of described spring 24 offset, the other end and spring seat 21 offset, during action, spring promotes to make guiding valve 4 can movement rapidly; The part that described guiding valve 4 is positioned at reset grease chamber 15 is socketed with piston 6, and it is smooth and easy that piston 6 can make guiding valve 4 slide in housing 2, and when injecting reset oil, also can effectively avoid reset oil to leak outside.
Described guiding valve 4 is positioned at Su Guan grease chamber 13 and is provided with near the position of pressure oil chamber 12 the first sealing station 8 that can be used to cut off pressure oil chamber 12 and Su Guan grease chamber 13; Described guiding valve 4 is positioned at Su Guan grease chamber 13 and is provided with near the position of oil revolute chamber 14 the second sealing station 9 that can be used to cut off Su Guan grease chamber 13 and oil revolute chamber 14.When guiding valve 4 slides left, the first sealing station 8, by pressure oil chamber 12 shutoff, separates pressure oil chamber 12 and Su Guan grease chamber 13, makes pressure oil can not enter Su Guan grease chamber 13; When guiding valve 4 slides to the right, oil revolute chamber 14 and Su Guan grease chamber 13 separate by the second sealing station 9, make pressure oil can not enter oil revolute chamber 14.
Described housing 2 is provided with the filler opening 18 be communicated with pressure oil chamber 12 and the reset hydraulic fluid port 19 be communicated with reset grease chamber 15, is provided with attachment hole 10 between reset grease chamber 15 and oil revolute chamber 14.The arranging of attachment hole can effectively be avoided resetting when oil injects, and pressure is excessive to cause damage to guiding valve and piston.Described cover plate 1 can be installed for detecting the contactless position switch of guiding valve 4 at the first empty intracavitary locations, such throttle can possess state sender function.
During work, housing 2 to be fixed by bolts on unit bearing support and to have taper pin to locate.Throttle (resets) in normal operation as shown in Figure 1, pressure oil enters pressure oil chamber 12 by filler opening 18, overcomes spring force, is promoted to the right by guiding valve 4, and oil revolute chamber 14 and Su Guan grease chamber 13 are separated by the second sealing station 9, make pressure oil can not enter oil revolute chamber 14.When unit breaks down in running; pull guiding valve 4 to be moved to the left by shock convex shoulder 7 or other reasons, pressure oil chamber 12 and Su Guan grease chamber 13 are cut off, and speed pass oil is released to bearing support through oil revolute chamber 14; close quick-closing valve and servo valve, force unit emergency shutdown.After crisis situations is excluded, the oil that resets enters in reset grease chamber 15 by reset hydraulic fluid port 19, and promote guiding valve 4 and move right, accelerator oil rest, remove the oil that resets after reset, throttle can normally work.
Claims (1)
1. an emergency governor pilot valve, comprise interconnective cover plate (1) and housing (2), there is in housing (2) the first cavity (11), it is characterized in that: in described first cavity (11), be provided with pressure oil chamber (12), Su Guan grease chamber (13), oil revolute chamber (14) and reset grease chamber (15) successively, intert in first cavity (11) and be provided with guiding valve (4), guiding valve (4) can slidably reciprocate in pressure oil chamber (12), Su Guan grease chamber (13), oil revolute chamber (14) and reset grease chamber (15); One end of guiding valve (4) is connected with convex shoulder (7), described convex shoulder (7) is hinged on housing (2), and convex shoulder (7) is provided with U-type groove (16), be provided with slidably locating stud (17) in U-type groove (16), described guiding valve (4) is connected with convex shoulder (7) by locating stud (17); Position near two ends in described first cavity (11) is inlaid with the first sleeve (3), the second sleeve (5) respectively, pressure oil chamber (12) is positioned at the first sleeve (3), oil revolute chamber (14) and reset grease chamber (15) are all positioned at the second sleeve (5), and the part be positioned in the first cavity (11) between pressure oil chamber (12) and oil revolute chamber (14) is Su Guan grease chamber (13); The portion of external described guiding valve (4) being positioned at oil revolute chamber (14) is set with spring (24), the right side wall (22) of oil revolute chamber (14) is also provided with spring seat (21), the left end that guiding valve (4) is positioned at the part of oil revolute chamber (14) is provided with boss (23), one end and the boss (23) of described spring (24) offset, the other end and spring seat (21) offset, and the part that described guiding valve (4) is positioned at reset grease chamber (15) is socketed with piston (6); Described guiding valve (4) is positioned at Su Guan grease chamber (13) and is provided with near the position of pressure oil chamber (12) the first sealing station (8) that can be used to cut off pressure oil chamber (12) and Su Guan grease chamber (13); Described guiding valve (4) is positioned at Su Guan grease chamber (13) and is provided with near the position of oil revolute chamber (14) the second sealing station (9) that can be used to cut off Su Guan grease chamber (13) and oil revolute chamber (14); Described cover plate (1) is provided with for detecting the contactless position switch of guiding valve (4) at the first empty intracavitary locations; Described housing (2) is provided with the filler opening (18) be communicated with pressure oil chamber (12) and the reset hydraulic fluid port (19) be communicated with reset grease chamber (15), is provided with attachment hole (10) between reset grease chamber (15) and oil revolute chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310445303.XA CN103511006B (en) | 2013-09-26 | 2013-09-26 | A kind of emergency governor pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310445303.XA CN103511006B (en) | 2013-09-26 | 2013-09-26 | A kind of emergency governor pilot valve |
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| Publication Number | Publication Date |
|---|---|
| CN103511006A CN103511006A (en) | 2014-01-15 |
| CN103511006B true CN103511006B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310445303.XA Active CN103511006B (en) | 2013-09-26 | 2013-09-26 | A kind of emergency governor pilot valve |
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| CN (1) | CN103511006B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131173B (en) * | 2018-02-06 | 2024-01-26 | 中国船舶集团有限公司第七〇四研究所 | On-line adjustable overspeed protector for ship |
| CN110273717B (en) * | 2019-07-22 | 2024-03-12 | 浙江华元汽轮机械有限公司 | Turbine machine and mechanical axial displacement protection device thereof |
| CN112082743A (en) * | 2020-07-30 | 2020-12-15 | 中广核核电运营有限公司 | Overspeed protection test bed and overspeed protection test method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840050A (en) * | 1973-04-26 | 1974-10-08 | Gen Electric | High-pressure trip valve |
| CN2320788Y (en) * | 1997-04-02 | 1999-05-26 | 成都发动机公司 | Emergency breaker for top pressure turbine generator |
| RU2236604C1 (en) * | 2003-03-05 | 2004-09-20 | Открытое акционерное общество "Невский завод" | Turbine engine emergency governor switch and method of its serviceability check |
| CN1749584A (en) * | 2005-09-20 | 2006-03-22 | 杭州和利时自动化有限公司 | Novel overspeed petective slide valve |
| CN2791262Y (en) * | 2005-12-01 | 2006-06-28 | 青岛捷能汽轮机股份有限公司 | Online moving device for turbine security system |
| CN201003415Y (en) * | 2007-02-02 | 2008-01-09 | 张来兴 | Emergency governor throttle |
| CN202596803U (en) * | 2012-05-28 | 2012-12-12 | 郭伟 | Emergency governor pilot valve for steam turbines |
| CN203515688U (en) * | 2013-09-26 | 2014-04-02 | 浙江华元汽轮机械有限公司 | Emergency governor pilot valve |
-
2013
- 2013-09-26 CN CN201310445303.XA patent/CN103511006B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840050A (en) * | 1973-04-26 | 1974-10-08 | Gen Electric | High-pressure trip valve |
| CN2320788Y (en) * | 1997-04-02 | 1999-05-26 | 成都发动机公司 | Emergency breaker for top pressure turbine generator |
| RU2236604C1 (en) * | 2003-03-05 | 2004-09-20 | Открытое акционерное общество "Невский завод" | Turbine engine emergency governor switch and method of its serviceability check |
| CN1749584A (en) * | 2005-09-20 | 2006-03-22 | 杭州和利时自动化有限公司 | Novel overspeed petective slide valve |
| CN2791262Y (en) * | 2005-12-01 | 2006-06-28 | 青岛捷能汽轮机股份有限公司 | Online moving device for turbine security system |
| CN201003415Y (en) * | 2007-02-02 | 2008-01-09 | 张来兴 | Emergency governor throttle |
| CN202596803U (en) * | 2012-05-28 | 2012-12-12 | 郭伟 | Emergency governor pilot valve for steam turbines |
| CN203515688U (en) * | 2013-09-26 | 2014-04-02 | 浙江华元汽轮机械有限公司 | Emergency governor pilot valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103511006A (en) | 2014-01-15 |
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