CN100585242C - Electromagnetic hydraulic valve possessing self-defence capability - Google Patents

Electromagnetic hydraulic valve possessing self-defence capability Download PDF

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Publication number
CN100585242C
CN100585242C CN200810011103A CN200810011103A CN100585242C CN 100585242 C CN100585242 C CN 100585242C CN 200810011103 A CN200810011103 A CN 200810011103A CN 200810011103 A CN200810011103 A CN 200810011103A CN 100585242 C CN100585242 C CN 100585242C
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delay
time
valve
self
plug
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CN101290070A (en
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周宇政
李声
富英
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Shenyang Guang Da High Voltage Electrical Appliance Co., Ltd.
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Electronic Engineering Co Ltd Shenyang University of Technology
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Abstract

The invention discloses an electromagnetic hydraulic valve with the self-defense capability, which comprises a main hydraulic valve, a separating-brake electromagnetic valve and a closing-brake electromagnetic valve. A self-defense delay valve is arranged between the separating-brake electromagnetic valve and the main hydraulic valve; a delay piston cylinder and a throttle valve-group cylinder are arranged side by side in the right cavity of the self-defense delay valve leftward; a delay piston is arranged in the delay piston cylinder; a spring, throttle plugs and a core tube are arranged in turn in the throttle valve-group cylinder from left to right, and the left of the throttle valve-group cylinder is communicated with the main-providing oil interface; an adjusting-position plug is arranged in the right cavity of the self-defense delay valve in order to adjust the motion scope of the delay piston; the blocked wire and nuts are arranged in the right of the adjusting-position plug in turn; and the left cavity of the self-defense delay valve is provided with a spring tube socket, which is provided with a reduction spring, the left of which is connected with a spring anti-thrust plug, which is connected with the delay piston. The invention has the advantages of strong self-defense capability, minor delay error between the separating and the closing, stable technical performance, simple structure, low failure rate and convenient maintenance.

Description

A kind of electromagnetic hydraulic valve with self-defense capability
Technical field
The invention belongs to the high-voltage breaker operation mechanism field, particularly have self-defense capability and close about a kind of--divide the time-delay departure little hydraulic buttery valve.
Background technique
Often adopt the control valve group of forming by hydraulic pressure main valve, one-level solenoid valve, two-stage electromagnetic valve as control mechanism at present in the high-voltage breaker operation mechanism.Along with the fast development of ultrahigh pressure power transmission and distribution technology all requires to have self-defense capability to control mechanism, here said self-defense capability is when being in the separating brake position at solenoid valve, close a floodgate, when tripping electromagnet is subjected to electricity simultaneously, solenoid valve is carried out earlier closing operation, after the time-delay again the process of sub-switching operation guarantee that ability is called self-defense capability.For the way of the needs prior art that satisfies self-defense capability is: adopt auxiliary switch, sensitive switch and time relay to form a kind of delay circuit, the technological scheme of this dynamo-electric combination, link is many, integrating error are big, close---the control of branch time is unstable, reliability is low, is difficult to satisfy technical requirements; For overcoming above-mentioned disadvantage, people provide another kind of solution again, that is: adopt a kind of stepped piston, drive auxiliary switch and position limit switch, by adjusting the area of stepped piston throttle orifice, change working oil flow and speed, change between auxiliary switch and position limit switch contact divide-shut brake between the stopping time, control switching winding again, realize its self-defense capability, yet this process link is loaded down with trivial details, closes---opening time is all greater than 6ms, and not satisfying opens circuit thinks highly of closing of combined floodgate---the branch time requires and for the second time during separating brake three-phase be not more than the national grid requirement of 3ms the same period.
Summary of the invention
At the disadvantage of prior art, the invention provides a kind of self-defense capability strong, close---divide that delay time error is little, technical performance stable, simple in structure, electromagnetic hydraulic valve that rate of fault is low, easy to maintenance with self-defense capability.
The technical solution adopted for the present invention to solve the technical problems is: comprise the main body hydrovalve, separating brake solenoid valve, combined floodgate solenoid valve.Between separating brake solenoid valve and main body hydrovalve, be provided with the self-defence time-delay valve, the self-defence time-delay valve is provided with time-delay piston cylinder and throttle valve group cylinder left in the right chamber side by side, be provided with the time-delay piston in the time-delay piston cylinder, be provided with spring, orifice plug and core pipe in the throttle valve group cylinder from left to right successively, the left end of throttle valve group cylinder communicates with main fuel feeding interface, the self-defence time-delay valve is provided with the adjustment limit plug that is used to adjust time-delay piston moving range in the right chamber, and this plug right-hand member is provided with plug and nut successively; A self-defence time-delay valve body left side is provided with the spring base in the chamber, is provided with Returnning spring in the spring base, and the Returnning spring right-hand member is connected with spring thrust plug, and this plug links to each other with the time-delay piston.Be provided with center hole in the time-delay piston abdomen, its left end is provided with left side outlet, right-hand member is provided with right outlet, oil supply hole and oil drainage hole when the time-delay piston is in right initial position on the self-defence time-delay valve are obstructed, when final position, a left side, time-delay piston place, right side outlet, center hole, the left side outlet of oil supply hole on the self-defence time-delay valve on the time-delay piston communicates with oil drainage hole, and the right chamber of self-defence time-delay valve communicates with main body hydrovalve oil supply hole through core pipe, orifice plug, main fuel feeding interface.Oil supply hole communicates with separating brake solenoid valve delivery outlet.Wherein adjust limit plug and be provided with the limit plug seal ring, the core pipe is provided with core seal of tube circle, and the time-delay piston is provided with the time-delay piston packing, and the spring base is provided with spring base seal ring.
The invention has the beneficial effects as follows that self-defense capability is strong, close---divide that delay time error is little, technical performance stable, simple in structure, rate of fault is low, easy to maintenance.Reach 6000 times, close---the branch time can be adjusted, and closes---mechanical life and divide the time error in 35～60ms scope, opening time 15～20ms, closing time 50～80ms less than 2ms.
Description of drawings
Fig. 1 is the present invention's principle schematic of closing a floodgate;
Fig. 2 is a separating brake principle schematic of the present invention;
Fig. 3 is a self-defence time-delay valve structural principle schematic representation among Fig. 1,2;
Fig. 4, circuit breaker reclosing performance diagram;
1 spring base wherein; 2 Returnning springs, 3 spring thrust plugs, 4 spring base seal rings, 5 time-delay pistons, 6 time-delay piston packings, 7 location seal rings, 8 adjust limit plug, 9 plugs, 10 nuts, 11 springs, 12 orifice plugs, 13 core seal of tube circles, 14 core pipes, 15 bolts, 16 separating brake solenoid valves, 17 fens gate valve steel balls, 18 combined floodgate solenoid valves, 19 main body hydrovalves, 20 main body hydraulic valve cores, 21 combined floodgate valve steel balls, 22 self-defence time-delay valves, the right chamber of 23 self-defence time-delay valves, 24 main fuel feeding interfaces, 25 main body hydrovalve oil supply holes, 26 main body hydrovalve oil return interfaces, 27 oil drainage holes, 28 oil supply holes, 29 separating brake solenoid valve delivery outlets, 30 center holes, 31 left side outlets, 32 right outlets, 33 II chamber high pressure oil outlets, the outlet of 34 III high-voltage oil cavities, 35 combined floodgate electromagnetic valve outlets, 36 separating brake electromagnetic valve entrances, 37 I high-voltage oil cavities, 38 II high-voltage oil cavities, 39 III high-voltage oil cavities, 40 IV high-voltage oil cavities, 41 V high-voltage oil cavities, 42 combined floodgate electromagnetic valve entrances.
Embodiment
Below in conjunction with accompanying drawing present embodiment is described further:
The present invention includes the main body hydrovalve, separating brake solenoid valve 16, combined floodgate solenoid valve 18.Between separating brake solenoid valve 16 and main body hydrovalve 19, be provided with self-defence time-delay valve 22, the self-defence time-delay valve is provided with time-delay piston cylinder and throttle valve group cylinder left in the right chamber 23 side by side, be provided with time-delay piston 5 in the time-delay piston cylinder, be provided with spring 11, orifice plug 12 and core pipe 14 in the throttle valve group cylinder from left to right successively, the left end of throttle valve group cylinder communicates with main fuel feeding interface 24, the self-defence time-delay valve is provided with the adjustment limit plug 8 that is used to adjust time-delay piston 5 movings range in the right chamber 23, and this plug right-hand member is provided with plug 9 and nut 10 successively; A self-defence time-delay valve body left side is provided with spring base 1 in the chamber, is provided with Returnning spring 2 in the spring base 1, and Returnning spring 2 right-hand members are connected with spring thrust plug 3, and this plug links to each other with time-delay piston 5.Be provided with center hole 30 in time-delay piston 5 abdomens, its left end is provided with left side outlet 31, right-hand member is provided with right outlet 32, oil supply hole 28 and oil drainage hole 27 when time-delay piston 5 is in right initial position on the self-defence time-delay valve 22 are obstructed, when final position, a left side, time-delay piston 5 places, oil supply hole 28 on the self-defence time-delay valve communicates with oil drainage hole 27 through the right side outlet 32 of time-delay on the piston 5, center hole 30, left side outlet 31, and chamber 23, the self-defence time-delay valve right side communicates with main body hydrovalve oil supply hole 25 through core pipe 14, orifice plug 12, main fuel feeding interface 24.Oil supply hole 28 communicates with separating brake solenoid valve 16 delivery outlets 29.Wherein adjust limit plug 8 and be provided with limit plug seal ring 7, core pipe 14 is provided with core seal of tube circle 13, and time-delay piston 5 is provided with time-delay piston packing 6, and spring base 1 is provided with spring base seal ring 4.
When sub-switching operation:
Electromagnetic hydraulic valve is in closing position, separating brake solenoid valve 16 is subjected to, open steel ball 17, the high pressure oil of the III high-voltage oil cavity of main body hydrovalve, through separating brake solenoid valve delivery outlet 29, oil supply hole 28, the center hole 30 of time-delay piston 5, left side outlet 31 and oil drainage hole 27, be put into the I high-voltage oil cavity, reenter low-pressure reservoir, main body hydraulic valve core 20 is motion round about under the differential pressure effect, open the separating brake valve port, close the combined floodgate valve port, the III high-voltage oil cavity, high pressure oil in IV high-voltage oil cavity and the V high-voltage oil cavity is released to the I high-voltage oil cavity by the separating brake valve port, and Returnning spring 2 resets time-delay piston 5, the hydraulic oil in V chamber is opened the valve port between orifice plug 12 and the core pipe 14 in the reseting procedure, time-delay piston 5 is resetted fast, and time-delay piston 5 is sealed the oil supply hole 29 of main body hydrovalve 19, and sub-switching operation finishes.See Fig. 1, Fig. 2.
When closing operation:
Electromagnetic hydraulic valve is in the separating brake position, combined floodgate solenoid valve 18 is subjected to, open combined floodgate valve steel ball 21, high pressure oil enters in the III high-voltage oil cavity of main body hydrovalve 19 through combined floodgate electromagnetic valve outlet 35 from the II high-voltage oil cavity, main body hydraulic valve core 20 moves under the effect of differential pressure, open the combined floodgate valve port, close the separating brake valve port, high pressure oil enters the IV high-voltage oil cavity from the II high-voltage oil cavity by the combined floodgate valve port, enter self-defence time-delay valve 22 by main body hydrovalve oil supply hole 25 again, passing through orifice plug 12, and the center hole of core pipe 14 enters the V high-voltage oil cavity, under the effect of high pressure oil, 5 motions of time-delay piston put in place, delay time this moment center hole 31 of piston 5 and the oil supply hole 29 of separating brake solenoid valve 16, and oil drainage hole 28 is by the right side outlet 32 of time-delay piston 5, center hole 30, left side outlet 31, reach oil drainage hole 27 and communicate, oil is discharged into the I high-voltage oil cavity.Returnning spring 2 is compressed, and closing operation finishes.See Fig. 1, Fig. 2.
When closing-minute when operation:
Electromagnetic hydraulic valve is in the separating brake position, combined floodgate solenoid valve 18 and separating brake solenoid valve 16 are subjected to simultaneously, all open branch gate valve steel ball 17, combined floodgate valve steel ball 21, the high pressure oil of II high-voltage oil cavity is by combined floodgate electromagnetic valve outlet 35 and III high-voltage oil cavity inlet 34, enter III high-voltage oil cavity 39, because the oil supply hole 29 on the separating brake solenoid valve 16 is sealed by time-delay piston 5, even the branch gate valve steel ball 17 of separating brake solenoid valve 16 is opened, the high pressure oil of III high-voltage oil cavity can not be released, so main body hydraulic valve core 20 is carried out closing operation earlier, at this moment, high pressure oil enters the V high-voltage oil cavity of self-defence time-delay valve by the main body hydrovalve oil supply hole 25 on the main body hydrovalve 19,5 motions of time-delay piston, have only time-delay piston 5 to move to the end, outlet 29 on the separating brake solenoid valve 16, oil supply hole 28 on the self-defence time-delay valve 22, the right outlet 32 of time-delay piston, center hole 30, left side outlet 31, oil drainage hole 27 on the self-defence time-delay valve 22 and the main body hydrovalve oil return interface 26 on the main body hydrovalve 19 communicate successively, just make the high pressure oil of III high-voltage oil cavity be discharged into the I high-voltage oil cavity, main body hydraulic valve core 20 is carried out sub-switching operation.The time t that moves to the required usefulness in the end of time-delay piston 5, close a floodgate the required on earth time greater than main body hydraulic valve core 20, guaranteed that main body hydraulic valve core 20 reliably closes a floodgate, the length of time t is by the center hole cross-sectional sizes in the orifice plug 12, change damping flow velocity and flow, change time-delay piston 5 travelling speeds and determine.Positioning piston 8 strokes are adjusted in fine setting, just can change the right side outlet 32 of time-delay piston 5 and the L distance between the oil supply hole 28 on the main body hydraulic valve 19, realize fine setting time t.Close-sub-switching operation finishes.

Claims (2)

1, a kind of electromagnetic hydraulic valve with self-defense capability, comprise the main body hydrovalve, the separating brake solenoid valve, the combined floodgate solenoid valve, it is characterized in that between separating brake solenoid valve and main body hydrovalve, being provided with the self-defence time-delay valve, the self-defence time-delay valve is provided with time-delay piston cylinder and throttle valve group cylinder left in the right chamber side by side, be provided with the time-delay piston in the time-delay piston cylinder, be provided with spring in the throttle valve group cylinder from left to right successively, orifice plug and core pipe, the left end of throttle valve group cylinder communicates with main fuel feeding interface, the self-defence time-delay valve is provided with the adjustment limit plug that is used to adjust time-delay piston moving range in the right chamber, and this plug right-hand member is provided with plug and nut successively; A self-defence time-delay valve body left side is provided with the spring base in the chamber, is provided with Returnning spring in the spring base, and the Returnning spring right-hand member is connected with spring thrust plug, and this plug links to each other with the time-delay piston; Be provided with center hole in the time-delay piston abdomen, its left end is provided with left side outlet, right-hand member is provided with right outlet, oil supply hole and oil drainage hole when the time-delay piston is in right initial position on the self-defence time-delay valve are obstructed, when final position, a left side, time-delay piston place, right side outlet, center hole, the left side outlet of oil supply hole on the self-defence time-delay valve on the time-delay piston communicates with oil drainage hole, and the right chamber of self-defence time-delay valve communicates with main body hydrovalve oil supply hole through core pipe, orifice plug, main fuel feeding interface, and oil supply hole communicates with separating brake solenoid valve delivery outlet.
2, the electromagnetic hydraulic valve with self-defense capability according to claim 1, it is characterized in that said adjustment limit plug is provided with the limit plug seal ring, the core pipe is provided with core seal of tube circle, and the time-delay piston is provided with the time-delay piston packing, and the spring base is provided with spring base seal ring.
CN200810011103A 2008-04-18 2008-04-18 Electromagnetic hydraulic valve possessing self-defence capability Active CN100585242C (en)

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CN100585242C true CN100585242C (en) 2010-01-27

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010048878A1 (en) * 2008-10-31 2010-05-06 沈阳东华工大高压电器设备有限公司 Electromagnetic hydraulic valve type spring hydraoulic operation mechanism with the ability of self-protection
CN101393816B (en) * 2008-10-31 2012-04-25 沈阳东华工大高压电器设备有限公司 Electromagnetic hydraulic valve type spring hydraulic operating mechanism having self-defense capability
EP2282065B1 (en) * 2009-07-30 2012-05-16 HAWE Hydraulik SE Hydraulic switching valve and circuit breaker device
CN102705551B (en) * 2012-06-08 2014-04-09 河南平高电气股份有限公司 Electromagnetic differential safety valve
CN104319120B (en) * 2014-11-20 2016-12-07 河南平高电气股份有限公司 Time-delay mechanism and use hydraulic actuating mechanism and the chopper of this time-delay mechanism
CN107842642B (en) * 2017-12-12 2024-04-02 大连亨利测控仪表工程有限公司 High-efficiency cut-off type single-action pneumatic actuating mechanism
CN112324720B (en) * 2020-03-18 2021-10-01 平高集团有限公司 Hydraulic operating mechanism and control valve thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896852A (en) * 1973-12-06 1975-07-29 E Systems Inc Time delay valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896852A (en) * 1973-12-06 1975-07-29 E Systems Inc Time delay valve

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