CN103511006A - Emergency trip accelerator - Google Patents
Emergency trip accelerator Download PDFInfo
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- CN103511006A CN103511006A CN201310445303.XA CN201310445303A CN103511006A CN 103511006 A CN103511006 A CN 103511006A CN 201310445303 A CN201310445303 A CN 201310445303A CN 103511006 A CN103511006 A CN 103511006A
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Abstract
The invention relates to an emergency trip accelerator. The emergency trip accelerator comprises a cover plate and a case, wherein the cover plate and the case are mutually connected. A first chamber is formed inside the case, and a pressure oil cavity, a rapid closing oil cavity, an oil return cavity and a reset oil cavity are sequentially formed in the first chamber. A sliding valve is arranged inside the first chamber in a penetrating mode and can slide inside the pressure oil cavity, the rapid closing oil cavity, the oil return cavity and the reset oil cavity back and forth. One end of the sliding valve is connected with a protruding shoulder, the protruding shoulder is hinged to the case and provided with a U-shaped groove, a locating pin capable of sliding is arranged inside the U-shaped groove, and the sliding valve is connected with the protruding shoulder through the locating pin. According to the emergency trip accelerator, the handle design of an original device is eliminated, reset oil is injected into the reset oil cavity so that automatic reset of the sliding valve is achieved, on-site operation by personnel is not needed, remote automatic control is achieved, the workload of the operation personnel and the manpower cost of a company are reduced, and the security risk of the operation personnel is reduced.
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 protection equipment of steam turbine, is used in conjunction with emergency overspeed governor, realizes the protection of unit mechanical trip.Working principle is when steam turbine breaks down in running, and emergency governor pilot valve closes oil initiation quick-closing valve by the speed of releasing and servo valve quick closedown forces unit emergency shutdown.It is that pull-up handle resets that current domestic unit adopts manual mode conventionally, and along with scientific and technical development, unit is controlled protective system and more and more come centralization and automation, and old device can not meet system requirements.On-site manual operation not only increases operator's workload and company's human cost, and has 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, by the injection oil that resets, realize automatically reseting of guiding valve.
In order to realize above-mentioned object, the present invention has adopted following technological scheme:
A kind of emergency governor pilot valve, comprise interconnective cover plate and housing, in housing, there is the first cavity, in described the first cavity, be provided with successively pressure oil chamber ,Su Guan grease chamber, oil revolute chamber and reset grease chamber, in the first cavity, intert 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-shaped groove, is provided with slidably locating stud in U-shaped groove, and described guiding valve is connected with convex shoulder by locating stud; Position near two ends in described the first cavity is inlaid with respectively the first sleeve, the second sleeve, pressure oil chamber is positioned at the first sleeve, oil revolute chamber and reset grease chamber are all positioned at the second sleeve, the part Wei Suguan grease chamber in the first cavity between pressure oil chamber and oil revolute chamber; The portion of external that is positioned at oil revolute chamber on described guiding valve is set with spring, spring seat is also installed on the right side wall of oil revolute chamber, 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; The position that is positioned at the close pressure oil chamber in Su Guan grease chamber on described guiding valve is provided with the first sealing platform that can be used to pressure oil chamber He Suguan grease chamber to cut off; On described guiding valve, being positioned at Su Guan grease chamber is provided with and can be used to the second sealing platform that Dui Suguan grease chamber and oil revolute chamber cut off near the position of oil revolute chamber.
As preferred version: be provided with on described cover plate for detecting the contactless position switch of guiding valve position in the first cavity.
As preferred version: described housing is provided with the filler opening being communicated with pressure oil chamber and the reset hydraulic fluid port being 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 personnel, realizing remote auto controls, reduce operator's workload and company's human cost, reduced operator's security risk; And the present invention can also exchange with old device, reduce design cost, also can be easily carry out control system upgrading for old unit in the past.
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, a kind of emergency governor pilot valve preferred implementation of the present invention is made to detailed description:
A kind of emergency governor pilot valve as shown in Figure 1 and Figure 2, comprise interconnective cover plate 1 and housing 2, in housing 2, there is the first cavity 11, in described the first cavity 11, be provided with successively pressure oil chamber 12,Su Guan grease chamber 13, oil revolute chamber 14 and reset grease chamber 15, interior interting of the first cavity 11 is provided with guiding valve 4, and 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-shaped groove 16, is provided with slidably locating stud 17 in U-shaped groove 16, and described guiding valve 4 is connected with convex shoulder 7 by locating stud 17; The interior position near two ends of described the first cavity 11 is inlaid with respectively the first sleeve 3, the second sleeve 5, 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 part Wei Suguan grease chamber 13 between pressure oil chamber 12He oil revolute chamber 14 in the second sleeve 5, the first cavitys 11.
On described guiding valve, 4 portion of external that are positioned at oil revolute chamber 14 are set with spring 24, on the right side wall 22 of oil revolute chamber 14, spring seat 21 is also installed, the left end that guiding valve 4 is positioned at the part of oil revolute chamber 14 is provided with boss 23, described spring 24 one end and boss 23 offset, the other end and spring seat 21 offset, during action, spring promotes guiding valve 4 can be moved 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, the oil of also effectively avoiding resetting leaks outside.
On described guiding valve 4, be positioned at Su Guan grease chamber 13 and near pressure oil chamber 12 position, be provided with the first sealing platform 8 that can be used to pressure oil chamber 12He Suguan grease chamber 13 to cut off; On described guiding valve 4, being positioned at Su Guan grease chamber 13 is provided with and can be used to the second sealing platform 9 that Dui Suguan grease chamber 13He oil revolute chamber 14 cuts off near the 14 of oil revolute chamber position.When guiding valve 4 slides left, the first sealing platform 8, by pressure oil chamber 12 shutoff, separates pressure oil chamber 12Yu Suguan grease chamber 13, makes pressure oil can not enter Su Guan grease chamber 13; When guiding valve 4 slides to the right, the second sealing platform 9 separates the 14Yu Suguan of oil revolute chamber grease chamber 13, makes pressure oil can not enter oil revolute chamber 14.
Described housing 2 is provided with the filler opening 18 being communicated with pressure oil chamber 12 and the reset hydraulic fluid port 19 being communicated with reset grease chamber 15, between reset grease chamber 15He oil revolute chamber 14, is provided with attachment hole 10.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.On described cover plate 1, can install for detecting the contactless position switch of guiding valve 4 position in the first cavity, throttle can possess state sender function like this.
During work, housing 2 is fixed by bolts on unit bearing support and has taper pin location.Throttle (resets) in normal operation as shown in Figure 1, pressure oil enters pressure oil chamber 12 by filler opening 18, overcomes spring force, and guiding valve 4 is promoted to the right, and the second sealing platform 9 is separated the 14Yu Suguan of oil revolute chamber grease chamber 13, make pressure oil can not enter oil revolute chamber 14.When unit breaks down in running; by clashing into convex shoulder 7 or other reasons, pull guiding valve 4 to be moved to the left, pressure oil chamber 12Yu Suguan grease chamber 13 is cut off, and Su Guanyoujing oil revolute chamber 14 releases to bearing support; close quick-closing valve and servo valve, force unit emergency shutdown.After crisis situation is excluded, the oil that resets is entered in reset grease chamber 15 by reset hydraulic fluid port 19, promotes guiding valve 4 and moves right, and accelerator oil rest, removes the oil that resets after reset, and throttle can work.
Claims (3)
1. an emergency governor pilot valve, comprise interconnective cover plate (1) and housing (2), in housing (2), there is the first cavity (11), it is characterized in that: in described the first cavity (11), be provided with successively pressure oil chamber (12) ,Su Guan grease chamber (13), oil revolute chamber (14) and reset grease chamber (15), in the first cavity (11), intert 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-shaped groove (16), in U-shaped groove (16), be provided with slidably locating stud (17), described guiding valve (4) is connected with convex shoulder (7) by locating stud (17); Position near two ends in described the first cavity (11) is inlaid with respectively the first sleeve (3), the second sleeve (5), 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), are positioned at the part Wei Suguan grease chamber (13) between pressure oil chamber (12) and oil revolute chamber (14) in the first cavity (11); The portion of external that on described guiding valve, (4) are positioned at oil revolute chamber (14) is set with spring (24), on the right side wall (22) of oil revolute chamber (14), spring seat (21) is also installed, the left end that guiding valve (4) is positioned at the part of oil revolute chamber (14) is provided with boss (23), one end of described spring (24) and boss (23) 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); The position that is positioned at the close pressure oil chamber (12) in Su Guan grease chamber (13) on described guiding valve (4) is provided with the first sealing platform (8) that can be used to pressure oil chamber (12) He Suguan grease chamber (13) to cut off; On described guiding valve (4), be positioned at Su Guan grease chamber (13) near the position of oil revolute chamber (14) be provided with can be used to that Dui Suguan grease chamber (13) and oil revolute chamber (14) cut off second seal platform (9).
2. a kind of emergency governor pilot valve according to claim 1, is characterized in that: on described cover plate (1), be provided with for detecting the contactless position switch of guiding valve (4) position in the first cavity.
3. a kind of emergency governor pilot valve according to claim 1, it is characterized in that: described housing (2) is provided with the filler opening (18) being communicated with pressure oil chamber (12) and the reset hydraulic fluid port (19) being communicated with reset grease chamber (15), between reset grease chamber (15) and oil revolute chamber (14), is provided with attachment hole (10).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103511006A true CN103511006A (en) | 2014-01-15 |
| CN103511006B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131173A (en) * | 2018-02-06 | 2018-06-08 | 中国船舶重工集团公司第七0四研究所 | It is peculiar to vessel can on-line tuning formula hypervelocity protective device |
| CN110273717A (en) * | 2019-07-22 | 2019-09-24 | 浙江华元汽轮机械有限公司 | Turbomachinery and its mechanical axial displacement limiting device |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131173A (en) * | 2018-02-06 | 2018-06-08 | 中国船舶重工集团公司第七0四研究所 | It is peculiar to vessel can on-line tuning formula hypervelocity protective device |
| 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 |
| CN110273717A (en) * | 2019-07-22 | 2019-09-24 | 浙江华元汽轮机械有限公司 | Turbomachinery and its mechanical axial displacement limiting device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103511006B (en) | 2015-11-25 |
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