CN103090072A - Baffle-type one-way overspeed cut-off valve - Google Patents
Baffle-type one-way overspeed cut-off valve Download PDFInfo
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- CN103090072A CN103090072A CN2013100465998A CN201310046599A CN103090072A CN 103090072 A CN103090072 A CN 103090072A CN 2013100465998 A CN2013100465998 A CN 2013100465998A CN 201310046599 A CN201310046599 A CN 201310046599A CN 103090072 A CN103090072 A CN 103090072A
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Abstract
A baffle-type one-way overspeed cut-off valve comprises a valve body, a valve cover, a valve plate, a glass window and a reset handle. The baffle-type one-way overspeed cut-off valve is characterized in that a corner bracket formed by a floorstand and a baseplate is arranged inside the valve body, a testing shifting fork is hinged on the floorstand, and two, three or four dry reed connection points are arranged on the floorstand. An adjustable plate hinged on the baseplate is supported on the testing shifting fork, positions corresponding to two dry reed connection points below the adjustable plate are respectively provided with a magnet, a tension spring screw rod mechanism is arranged between the adjustable plate and the baseplate, and the valve plate is fixed on the upper side of the adjustable plate. A reset rotating shaft is arranged on the end position of the oil outlet of the valve body, the reset handle is fixed at the shaft end of the reset rotating shaft outside the valve body, and a reset pusher dog is arranged on the reset rotating shaft inside the valve body. Two turning-over covers are arranged on the valve cover, and the valve cover and the two turning-over covers respectively form a wire connecting cabin and a detecting exhausting cabin independently. The baffle-type one-way overspeed cut-off valve has the advantages of being small in the setting error of flow velocity, strong in anti-seismic property, small in malfunction probability, good in sealing, long in service life and the like.
Description
Technical field
The invention belongs to oil and invade formula power transformer auxiliary security protective gear technical field, specifically the unidirectional hypervelocity cut-off valve of baffle-type in a kind of union that is arranged on transformer and oil conservater.
Background technique
At present; when transformer due to internal fault or other reasons; cause oil in a large number excessive, when leaking; this valve has the function of " oil extraction is namely closed "; can cut off immediately the oil circuit of oil conservater and transformer bay; making oil conservater no longer to the transformer repairing, is that oil is invaded the desirable auxiliary security protective gear of formula power transformer, is also to be with the oil that fills the nitrogen fire-fighting equipment to invade the assembly that the formula transformer must be installed.But, because there is defective in existing structure, various problems often appears during use, specific as follows:
1, active plate upper end is sleeved in the rotating shaft that resets, and area of contact is large, and frictional damping is large, affect the sensitivity of closing of leaking, when setting, flow velocity can produce error, and namely excessive at oil or when leaking, the valve plate on active plate can not cut off the oil circuit of oil conservater and transformer bay immediately;
2, the rotating shaft that resets of active plate upper end suit is through near on the valve body of valve gap, fixedly the support of dry-reed contact is suspended from the upper lateral part of active plate, valve plate can keep stable half-open position, the one, by the attracting each other of the magnet on active plate and dry-reed contact, the 2nd, extension spring support in resetting-mechanism, in case but in the situation of magnet demagnetization, tension spring inefficacy or strenuous vibration, valve plate can be closed under action of gravitation, causes misoperation;
3, reset easily loosening leakage of oil of thread bush between rotating shaft and valve body, and be difficult for secondary and tighten;
4, the sealing gasket between valve body and valve gap is the face sealing, and sealing effect is bad, and the sudden and violent leakage of sealing gasket outside, and is easily aging;
5, the extension spring mechanism on active plate is in case fixing, and the elastic pulling force of its generation just can not be regulated, and does not namely also do under the prerequisite of replacing simultaneously at magnet and extension spring invariant position, can't carry out oily flow velocity and adjust;
6, the tenminal block on valve gap only has two, can not practical requirement.
According to as mentioned above, existing product is badly in need of improving.
Summary of the invention
The purpose of this invention is to provide the unidirectional hypervelocity cut-off valve of a kind of baffle-type; it is arranged in the union of transformer and oil conservater; when transformer hinders when causing that transformer oil leaks for some reason; cut-off valve meeting autoshutdown valve plate; and send alarm signal; prevent that transformer oil in oil conservater from leaking combustion-supporting, transformer is shielded.
The object of the present invention is achieved like this: it comprises valve body, valve gap, valve plate, glass vision panel and reseting handle, it is characterized in that: be provided with a corner bracket in described valve body, this corner bracket is comprised of stand and base plate, be hinged with the test shift fork that tilts to base plate in stand, also be provided with in stand and be parallel to two, three or four dry-reed contacts testing shift fork, also be provided with restoring link in the stand of test shift fork upside, be connected with Returnning spring between the edge on restoring link and test shift fork; In test shift fork upper support, the active plate that is hinged on base plate is arranged, in the position of the corresponding dry-reed contact of active plate downside, magnet is set respectively, be provided with the extension spring screw mechanism between active plate and base plate, be fixed with valve plate at active plate upside; The place is provided with the rotating shaft that resets at valve body oil outlet end, and the axle head of rotating shaft outside valve body that reset is fixed with reseting handle, also is provided with the pusher dog that resets in the rotating shaft that resets in valve body; Being provided with two on described valve gap renovates, valve gap and two renovate and form respectively independently wiring bin and detect the exhaust storehouse, be provided with wire outlet on wiring bin, be provided with tenminal block on valve gap in wiring bin, detect on the valve gap in the exhaust storehouse and be provided with the corresponding probe of testing shift fork of vent plug and end.
Impaired in transportation, installation, using process in order to prevent glass vision panel, be provided with the form gland on glass vision panel.
In order to improve sealing effect, change linear sealing into by the face sealing of original structure, between valve body and valve gap, valve gap and renovate between be provided with by the spacing seal ring of restraining groove.
In order to prevent the leakage of oil between rotating shaft and valve body that resets, the rotating shaft axle head that resets outside valve body also is provided with the rotating shaft gland.
Described two closed joints of renovating are provided with lock bolt.
Because each dry-reed contact is drawn two wires, 4,6 or 8 of the quantity of tenminal block.
The present invention has following advantage:
1, active plate is hinged on base plate, and frictional damping is little, and the flow velocity specification error is little;
2, active plate is supported on the test shift fork, only depends on gravity just can keep the half-open position of valve plate, moment superpressure or when being subject to unexpected the vibrations misoperation probability little;
3, the rotating shaft gland can when reset between rotating shaft and valve body leakage of oil, screw and prevent leakage of oil;
4, the spacing seal ring sealing means of restraining groove is linear sealing, because seal ring has been avoided sudden and violent leakage outside, has extended its working life when sealing effect improves greatly;
5, the extension spring screw mechanism is oily flow velocity setting device, and the adjusting nut on rotating screw bolt can change closes setting valve;
6, the tenminal block on valve gap changes 4,6 or 8 into, adapts to various demands.
Description of drawings
Fig. 1 is broken section structural representation sketch of the present invention;
Fig. 2 is that partial cutaway figure is looked on the right side of Fig. 1;
Fig. 3 is four tenminal block wiring schematic diagrams of the present invention;
Fig. 4 is six tenminal block wiring schematic diagrams of the present invention;
Fig. 5 is eight tenminal block wiring schematic diagrams of the present invention.
Embodiment
By Fig. 1～shown in Figure 2, main structure of the present invention is as follows: it comprises valve body 1, valve gap 8, valve plate 16, glass vision panel 32 and reseting handle 17, be provided with a corner bracket in valve body 1, this corner bracket is comprised of stand 2 and base plate 24, be hinged with the test shift fork 7 that tilts to base plate in stand 2, also be provided with in stand 2 and be parallel to four dry-reed contacts 6 testing shift fork 7, also be provided with restoring link 28 in the stand 2 of test shift fork 7 upsides, be connected with Returnning spring 26 between the edge on restoring link 28 and test shift fork 7; In test shift fork 7 upper supports, the active plate 22 that is hinged on base plate 24 is arranged, position at the corresponding dry-reed contact 6 of active plate 22 downsides respectively arranges magnet 25, be provided with the extension spring screw mechanism between active plate 22 and base plate 24, this extension spring screw mechanism includes extension spring 3, screw rod 4 and adjusting nut 5, is fixed with valve plate 16 at active plate 22 upsides; 1 oil outlet end place is provided with the rotating shaft 20 that resets at valve body, and the axle head of rotating shaft outside valve body that reset is fixed with reseting handle 17, also is provided with the pusher dog 21 that resets in the rotating shaft that resets in valve body; Be provided with two on valve gap and renovate 9, valve gap and two renovate and form respectively independently wiring bin and detect the exhaust storehouse, be provided with two wire outlets 30 on wiring bin, be provided with tenminal block 12 on valve gap in wiring bin, detect on the valve gap in the exhaust storehouse and be provided with the corresponding probe 29 of testing shift fork 7 of vent plug 27 and end.Impaired in transportation, installation, using process in order to prevent glass vision panel, be provided with form gland 31 on glass vision panel.In order to improve sealing effect, change linear sealing into by the face sealing of original structure, between valve body and valve gap, valve gap and renovate between be provided with by the spacing seal ring 13 of restraining groove.The rotating shaft axle head that resets outside valve body also is provided with rotating shaft gland 19, can screw leak-stopping when resetting between rotating shaft and valve body leakage of oil.Renovate 9 closed joint for two and be provided with lock bolt 10.Because each dry-reed contact is drawn two wires, 8 of the quantity of tenminal block.In addition, also comprise outlet port sealing circle 14, wire outlet gland 15, operation immovable point 18, valve plate cushion rubber 24 and valve plate immovable point 33 in figure.
Installation and use:
1, should remove sealer on cut-off valve before installing, determine to damage without physics, various functions is installed connection after well again;
2, because this product without gas warning system, the mounting point should be selected in the horizontal segment between gas relay and oil conservater;
3, the outlet port sealing circle is arranged in wire outlet, should in time tighten the wire outlet gland after circuit connects.If cable and cushion rubber are gapped, should be wound around waterproof insulation tape with the diameter overstriking, prevent that rainwater from entering in wiring bin;
4, should use vent plug that the cut-off valve internal gas is drained after oiling;
5, reseting handle should point to the running position shown in label when normal operation, and fixing at operation immovable point 18 with the handle set screw.Should reseting handle is left-handed to valve plate immovable point 33 before oiling, and fix with the reseting handle set screw, preventing that valve plate from closing affects oiling.Reseting handle should be fixed at running position again after oiling, and be used vent plug that gas in cut-off valve is drained;
6, the cut-off valve setting valve is the front setting of dispatching from the factory, and must not arbitrarily rotate the adjusting nut on the extension spring screw mechanism.Need to reset if close setting valve, should carry out on professional test stand;
7, renovating with wire outlet on wiring bin is equipped with O-ring seal, as long as tighten, waterproof action just arranged, and must not add any cover cap and rainproof ancillary method;
When the sealability of rotating shaft reduces if 8 multi-pass operations or long-play reset, the rotating shaft gland is suitably tightened got final product.
Working principle:
1, the dry-reed contact that is in operation is subjected to attraction on active plate, and break contact is in normally open.Leak when transformer fault has transformer oil, and flow velocity reaches when closing scope, its valve plate can autoshutdown, and the transformer oil in the blocking-up oil conservater flows out, prevent outer rush down combustion-supporting.The break contact Off of this moment becomes closed state from attraction, and sends alarm signal;
2, the extension spring screw mechanism that is fixed on base plate and active plate is oily flow velocity setting device, and the adjusting nut on rotating screw bolt can change closes setting valve;
When 3, needing manual reset after valve plate is closed, move reseting handle to the direction of arrow, its valve plate can set back.When dispatching from the factory, for preventing that in transportation, valve plate swings, reseting handle is tilting left, makes the pusher dog that resets withstand valve plate, is used for fixing.If when outwards draining the oil from the oil conservater oiling or below transformer, the means of fixation that also can use the pusher dog that resets to withstand valve plate operates;
4, be provided with probe and two devices of vent plug in detection exhaust storehouse: probe is for checking that signal contact moves and close the detection device of valve plate, during detection, press down the bellows of tips of probes, drive the action of test shift fork, under the effect of shift fork, valve plate is made closing motion, and this moment, dry-reed contact broke away from attraction, and the break contact closure is sent alarm signal.Vent plug is the venting gas appliance for exhausting air.Close and detect the exhaust storehouse and renovate to make and detect exhaust storehouse sealing;
5, wiring bin Inner is provided with tenminal block.Tenminal block quantity is divided into 4,6,8 three types by model, and its mode of connection is as shown in Fig. 3-5.External circuit is introduced by wire outlet and is connected with terminal.Close wiring bin and renovate and to make wiring bin sealing, avoid rainwater to invade.In addition, outwards be provided with condensed water from exhaust port in wiring bin bottom, but when meeting condensed water and assemble Self-discharged, in order to ensure the insulation environment of wiring bin internal wiring terminal.
Technical parameter:
Adaptable area: general area and humid tropical zone; Operating temperature :-40-105 ℃; Latus rectum size: 80mm; Close scope: 0.3-0.5m/s;
Rated capacity:
| Operating voltage V | Operating current A | Constant |
| Exchange 220 | 0.3 | Power-factor cos Φ≤0.6 |
| Direct current 220 | 0.3 | Time constant s≤5 * 10 -2S |
Insulating strength: each tenminal block over the ground, should bear voltage 2000V/min without flashover between terminal and terminal and tenminal block and dry-reed contact; Sealability: should bear pressure 0.2MPa oil-proof; Anti-seismic performance: should bear vibration frequency 4-20Hz(sinusoidal wave), when acceleration is 4g, not misoperation of dry-reed contact in cut-off valve; The anti-spraying grade is the IPX5 level.
In sum, realized purpose of the present invention.
Claims (6)
1. unidirectional hypervelocity cut-off valve of baffle-type, it comprises valve body, valve gap, valve plate, glass vision panel and reseting handle, it is characterized in that: be provided with a corner bracket in described valve body, this corner bracket is comprised of stand and base plate, be hinged with the test shift fork that tilts to base plate in stand, also be provided with in stand and be parallel to two, three or four dry-reed contacts testing shift fork, also be provided with restoring link in the stand of test shift fork upside, be connected with Returnning spring between the edge on restoring link and test shift fork; In test shift fork upper support, the active plate that is hinged on base plate is arranged, in the position of the corresponding dry-reed contact of active plate downside, magnet is set respectively, be provided with the extension spring screw mechanism between active plate and base plate, be fixed with valve plate at active plate upside; The place is provided with the rotating shaft that resets at valve body oil outlet end, and the axle head of rotating shaft outside valve body that reset is fixed with reseting handle, also is provided with the pusher dog that resets in the rotating shaft that resets in valve body; Being provided with two on described valve gap renovates, valve gap and two renovate and form respectively independently wiring bin and detect the exhaust storehouse, be provided with wire outlet on wiring bin, be provided with tenminal block on valve gap in wiring bin, detect on the valve gap in the exhaust storehouse and be provided with the corresponding probe of testing shift fork of vent plug and end.
2. the unidirectional hypervelocity cut-off valve of baffle-type according to claim 1, is characterized in that: be provided with the form gland on described glass vision panel.
3. the unidirectional hypervelocity cut-off valve of baffle-type according to claim 1 is characterized in that: between valve body and valve gap, valve gap and renovate between be provided with by the spacing seal ring of restraining groove.
4. the unidirectional hypervelocity cut-off valve of baffle-type according to claim 1, it is characterized in that: the rotating shaft axle head that resets outside valve body also is provided with the rotating shaft gland.
5. the unidirectional hypervelocity cut-off valve of baffle-type according to claim 1, it is characterized in that: described two closed joints of renovating are provided with lock bolt.
6. the unidirectional hypervelocity cut-off valve of baffle-type according to claim 1, it is characterized in that: described tenminal block is 4,6 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046599.8A CN103090072B (en) | 2013-02-06 | 2013-02-06 | Baffle-type one-way overspeed cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046599.8A CN103090072B (en) | 2013-02-06 | 2013-02-06 | Baffle-type one-way overspeed cut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103090072A true CN103090072A (en) | 2013-05-08 |
| CN103090072B CN103090072B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310046599.8A Active CN103090072B (en) | 2013-02-06 | 2013-02-06 | Baffle-type one-way overspeed cut-off valve |
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| Country | Link |
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| CN (1) | CN103090072B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485382A (en) * | 2016-01-26 | 2016-04-13 | 张宝山 | Mutual and electric double-controlled baffle type one-way overspeed shutoff valve |
| CN109058559A (en) * | 2018-09-04 | 2018-12-21 | 桐城市立行电子科技有限公司 | A kind of solenoid valve for water system |
| CN109113133A (en) * | 2018-09-04 | 2019-01-01 | 桐城市立行电子科技有限公司 | A kind of secondary water-supply solenoid valve convenient for water intaking detection |
| CN109185536A (en) * | 2018-09-04 | 2019-01-11 | 桐城市立行电子科技有限公司 | A kind of solenoid valve of the water quality detection system for secondary water-supply |
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2869579A (en) * | 1956-05-10 | 1959-01-20 | Gen Electric | Mechanical pressure relief device |
| JPS5276728A (en) * | 1975-12-22 | 1977-06-28 | Hitachi Ltd | Pressure prevention valve |
| JPS6079710U (en) * | 1983-11-04 | 1985-06-03 | 三菱電機株式会社 | Pressure relief device |
| CN2357185Y (en) * | 1998-11-05 | 2000-01-05 | 区汝创 | Transformer butterfly valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485382A (en) * | 2016-01-26 | 2016-04-13 | 张宝山 | Mutual and electric double-controlled baffle type one-way overspeed shutoff valve |
| CN109058559A (en) * | 2018-09-04 | 2018-12-21 | 桐城市立行电子科技有限公司 | A kind of solenoid valve for water system |
| CN109113133A (en) * | 2018-09-04 | 2019-01-01 | 桐城市立行电子科技有限公司 | A kind of secondary water-supply solenoid valve convenient for water intaking detection |
| CN109185536A (en) * | 2018-09-04 | 2019-01-11 | 桐城市立行电子科技有限公司 | A kind of solenoid valve of the water quality detection system for secondary water-supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103090072B (en) | 2014-06-25 |
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Effective date of registration: 20180314 Address after: A group of Xinliu Street Railway community in Xinmin City, Shenyang, Liaoning Province Patentee after: Shenyang new transformer accessories factory Address before: 110300 Shenyang new engineering transformer accessories factory, Xinmin City, Xinmin City, Shenyang City, Liaoning Patentee before: Zhang Baoshan |