CN1034145C - Hydraulic operation structure of high-voltage breaker - Google Patents
Hydraulic operation structure of high-voltage breaker Download PDFInfo
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- CN1034145C CN1034145C CN93109385A CN93109385A CN1034145C CN 1034145 C CN1034145 C CN 1034145C CN 93109385 A CN93109385 A CN 93109385A CN 93109385 A CN93109385 A CN 93109385A CN 1034145 C CN1034145 C CN 1034145C
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- oil
- valve
- spool
- valve core
- valve body
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- 238000000605 extraction Methods 0.000 claims description 26
- 238000012856 packing Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 2
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 69
- 230000006837 decompression Effects 0.000 description 11
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The present invention relates to a hydraulic operation mechanism of a high-voltage breaker, which comprises a first level valve core, an oil discharging valve core and an oil inlet valve core, wherein the first order valve core is arranged in a hole on the upper end of the oil discharging valve core and is used for separating brake; the first order valve core and the step of the oil discharging valve core form a valve port; the oil discharging valve core is arranged in a hole in the upper end of a valve body; the oil discharging valve core and the step of the valve body form an oil discharging valve port; the oil inlet valve core is arranged in a hole on the lower end of the valve body; the oil inlet valve core and the step of the valve body form an oil inlet valve port. Mechanical regenerative feedback is added between the first order hydraulic pressure and the second order hydraulic pressure; thus, solid separation time is shortened, and rigid separation speed is improved. A principle self-holding mechanism is adopted, so the hydraulic operation mechanism has the advantages of simple structure and reliable operation, no phenomena of voltage loss slow division and voltage loss slow combination; the hydraulic operation mechanism can be used for a high voltage breaker and a supervoltage breaker.
Description
The present invention relates to a kind of hydraulic actuating mechanism of primary cut-out.
Raising along with the power transmission and transformation pressure, the branch wire time of primary cut-out is shorter and shorter, divide-shut brake speed is more and more faster, particularly in order to shorten solid minute time and to improve just-off speed, the method that the hydraulic actuating mechanism of common primary cut-out (through all being called for short operating mechanism down) is adopted is with electromagnet the divide-shut brake electrical signal conversion to be become mechanical signal, amplifies by multistage hydraulic then, and the operating mechanism that has reaches level Four, the divide-shut brake task is finished in the action of control hydraulic cylinder piston.Because of every the amplification through one-level hydraulic pressure all need expend the regular hour, divide the time admittedly and improve just-off speed so be difficult to further shortening.
The objective of the invention is: it is to adopt 2-level hydraulic to amplify, and between the first order and the amplification of second level hydraulic pressure, adopts the operating mechanism of mechanical positive feedback method, shortens and divides the time admittedly and improve just-off speed, overcomes the problem that background technology exists.
Technical scheme of the present invention is: it comprises valve body, hydraulic cylinder, accumulator, the step valve that closes a floodgate, making electromagnet, tripping electromagnet.As shown in Figure 1, in oil extraction spool 7 upper end holes in valve body 12 separating brake one-level poppet valve core 24 is housed, and form valve port 26 with the step of oil extraction spool 7, tripping electromagnet 25 is equipped with in the upper surface of one-level poppet valve core 24, one end is equipped with little spring 21, by oilhole 10 connected tanks of the oilhole on the one-level poppet valve core 24 20, oil-feed spool 11; Be contained in the oil extraction spool 7 in valve body 12 upper end holes, and become draining valve mouth 16 with the step of valve body 12, the oilhole 23 of its upper end is connected oil pocket 22 and valve port 26, one termination of throttle orifice 6 is led to oil pocket 22, the other end and oil pocket 15, hydraulic cylinder rodless cavity 4 are connected, one termination of unidirectional valve 5 is led to oil pocket 22, and the other end is connected the C mouth of the step valve 29 that closes a floodgate; Be contained in the oil-feed spool 11 in 12 times stomidiums of valve body, and form inlet valve mouth 14 with the step of valve body 12, oil-feed spool 11 upper ends embed the lower end of oil extraction spool 7 and can slide, oil-feed spool 11 two ends are communicated with by oilhole 10, and connected tank, in the oil pocket 22 in the valve body 12 packing ring 19 that can move up and down is housed, big spring 27 is housed above the packing ring 19, the P mouth of the step valve 29 that closes a floodgate, oil suction chamber 13, oil pocket 9, hydraulic cylinder rod chamber 1 are connected with accumulator 30; The diameter of valve port 26 is greater than the diameter b of separating brake one-level poppet valve core 24, the diameter of oil-feed valve port 14 equates with the diameter a of oil-feed spool 11, the oil pressure effective area of oil-feed spool 11 in oil pocket 9 is greater than the oil pressure effective area in oil suction chamber 13, the oil pressure effective area of oil extraction spool 7 in oil pocket 22 is greater than the oil pressure effective area in oil pocket 15, and their difference is also greater than oil-feed spool 11 poor at the oil pressure area of oil pocket 9, oil suction chamber 13, oil-feed valve port 14 Lift f be less than or equal to "on" position oil extraction spool 7 step to valve body 12 steps apart from e.
The present invention compares with background technology, the useful effect that has is: it adopts 2-level hydraulic to amplify, and adopts mechanical positive feedback between the first order and the amplification of second level hydraulic pressure, shortens and divides the time admittedly and improve just-off speed, and adopted principle self-sustaining structure, therefore, this device has simple in structure, the divide-shut brake reliable in action, the just-off speed height, slowly close phenomenon admittedly branch time weak point, no decompression divide slowly with decompression, can be used on high pressure or the extra high voltage circuit breaker.
Below in conjunction with accompanying drawing, the present invention is explained in detail.
Fig. 1, operating mechanism "on" position structure principle chart of the present invention;
Fig. 2, operating mechanism gate-dividing state structure principle chart of the present invention.
As shown in Figure 1, be that operating mechanism is in "on" position, hydraulic cylinder rod chamber 1, hydraulic cylinder rodless cavity 4, oil pocket 15, oil suction chamber 13, oil pocket 9, oil pocket 22 all are in high pressure, and valve port 26, oil extraction valve port 16 are closed, and oil-feed valve port 14 is opened.When the separating brake signal of telecommunication arrives, the armature movement of tripping electromagnet 25, promote separating brake one-level poppet valve core 24, make valve port 26 that unlatching be arranged slightly, the hydraulic oil of oil pocket 22 flows back to fuel tank by oilhole 23 from valve port 26, oil pocket 22 beginning decompressions, under the effect of oil pocket 15 hydraulic oils and inlet valve oil pressure, oil extraction spool 7 is along the direction displacement of arrow 8, and the displacement of oil extraction spool 7 makes valve port 26 further open again, makes oil pocket 22 decompression faster, because decompression, oil extraction spool 7 along the direction displacement of arrow 8, is concatenated to form positive feedback with this more rapidly, makes oil extraction spool 7 jack-up packing rings 19 and big spring 27, make oil extraction valve port 16 be opened into maximum rapidly, and oil-feed spool 11 since the oil pressure effective area of oil pocket 9 greater than oil suction chamber 13 in the oil pressure effective area, therefore along the direction displacement of arrow 8, close oil-feed valve port 14 rapidly.The hydraulic oil of hydraulic cylinder rodless cavity 4 is by oil pocket 15, oil extraction valve port 16, oil-discharging cavity 17 oil sump tanks, and piston 2 is return along the direction of arrow 3 rapidly under the hydraulic oil effect of hydraulic cylinder rod chamber 1, finishes the separating brake action.After piston 2 fell back on the end, hydraulic cylinder rodless cavity 4, oil pocket 15, oil pocket 22 oil pressure were zero, under the effect of big spring 27, make oil extraction spool 7 along arrow 8 to the opposite direction displacement, till packing ring 19 is run into step 18, as shown in Figure 2.Oil-feed this moment valve port 14 is closed, and oil extraction valve port 16 is opened, and serves as zero to guarantee hydraulic cylinder rodless cavity 4 oil pressure, and piston 2 keeps gate-dividing state constant.As certain reason, boost again after making accumulator 30 decompressions or decompression, because oil-feed valve port 14 is closed, oil extraction valve port 16 is opened, piston 2 still is in gate-dividing state, decompression can not occur and close phenomenon slowly.
As shown in Figure 2, be that operating mechanism is in gate-dividing state, when fashionable, making electromagnet 28, the ball valve of a step valve 29 of closing a floodgate is opened, the hydraulic oil of accumulator 30 is by the P mouth of the step valve 29 that closes a floodgate, the C mouth, unidirectional valve 5 enters oil pocket 22, because the diameter of valve port 26 is greater than the diameter b of separating brake one-level poppet valve core 24, under the effect of oil pressure, valve port 26 is closed, the oil pressure that is subjected in oil pocket 22 because of oil extraction spool 7 is greater than the oil pressure that is subjected in oil pocket 15, and overcome oil pressure on the oil-feed spool 11, and oil extraction valve port 16 is closed, oil-feed valve port 14 is opened, the hydraulic oil of accumulator 30 outputs is by oil suction chamber 13, oil-feed valve port 14, oil pocket 15 enters hydraulic cylinder rodless cavity 4, because piston 2 is at the oil pressure effective area of the hydraulic cylinder rodless cavity 4 oil pressure effective area greater than hydraulic cylinder rod chamber 1, so under the effect of oil pressure, piston 2 moves along the rightabout of arrow 3, finish the combined floodgate task, as shown in Figure 1.Oil-feed this moment valve port 14 is opened, and oil extraction valve port 16 and valve port 26 are closed, and hydraulic cylinder rodless cavity 4 is connected with accumulator 30 all the time, guarantees that piston 2 keeps "on" position constant.As certain reason accumulator 30 decompressions, perhaps boost after the decompression, because oil-feed valve port 14 is opened all the time, oil extraction valve port 16 and valve port 26 are closed all the time, piston 2 is in "on" position, decompression branch phenomenon slowly can not occur.
Claims (1)
- A kind of hydraulic actuating mechanism of primary cut-out, it comprises valve body, hydraulic cylinder, accumulator [30], the step valve [29] that closes a floodgate, making electromagnet [28], tripping electromagnet [25], feature of the present invention is:1) in oil extraction spool [7] upper end hole in valve body [12] separating brake one-level poppet valve core [24] is housed, and form valve port [26] with the step of oil extraction spool [7], tripping electromagnet [25] is equipped with in the upper surface of one-level poppet valve core [24], little spring [21] is equipped with in its lower surface, by oilhole [10] connected tank of the oilhole [20] on the one-level poppet valve core [24], inlet valve [11];2) be contained in the interior oil extraction spool [7] of valve body [12] upper end hole, and become draining valve [16] with the step of valve body [12], the oilhole [23] of its upper end is connected oil pocket [22] and valve port [26], one termination of throttle orifice [6] is led to oil pocket [22], the other end and oil pocket [15], hydraulic cylinder rodless cavity [4] are connected, one termination of unidirectional valve [5] is led to oil pocket [22], and the other end is connected the C mouth of the step valve [29] that closes a floodgate;3) be contained in the oil-feed spool [11] in the stomidium under the valve body [12], and form inlet valve mouth [14] with the step of valve body [12], oil-feed spool [11] upper end embeds the lower end of oil extraction spool [7] and can slide, oil-feed spool [11] two ends are communicated with by oilhole [10], and connected tank, in the oil pocket [22] in the valve body [12] packing ring [19] that can move up and down is housed, big spring [27] is housed above the packing ring [19], and the P mouth of the step valve [29] that closes a floodgate, oil suction chamber [13], oil pocket [9], hydraulic cylinder rod chamber [1] are connected with accumulator [30];4) diameter of valve port [26] is greater than the diameter b of separating brake one-level poppet valve core [24], the diameter of oil-feed valve port [14] equates with the diameter a of oil-feed spool [11], the oil pressure effective area of oil-feed spool [11] in oil pocket [9] is greater than the oil pressure effective area in oil suction chamber [13], the oil pressure effective area of oil extraction spool [7] in oil pocket [22] is greater than the oil pressure effective area in oil pocket [15], and their difference also greater than oil-feed spool [11] in oil pocket [9], the oil pressure area of oil suction chamber [13] poor, oil-feed valve port [14] Lift f be less than or equal to "on" position oil extraction spool [7] step to valve body [12] step apart from e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93109385A CN1034145C (en) | 1993-07-29 | 1993-07-29 | Hydraulic operation structure of high-voltage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93109385A CN1034145C (en) | 1993-07-29 | 1993-07-29 | Hydraulic operation structure of high-voltage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1083967A CN1083967A (en) | 1994-03-16 |
| CN1034145C true CN1034145C (en) | 1997-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93109385A Expired - Fee Related CN1034145C (en) | 1993-07-29 | 1993-07-29 | Hydraulic operation structure of high-voltage breaker |
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| Country | Link |
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| CN (1) | CN1034145C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295554B (en) * | 2014-02-24 | 2017-04-05 | 国家电网公司 | Switching mechanism, hydraulic actuating mechanism and its working cylinder |
| CN104314918B (en) * | 2014-06-18 | 2016-08-17 | 国家电网公司 | Hydraulic actuating mechanism used for high-voltage switch and hydraulic working cylinder thereof |
| 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 |
| CN105003478A (en) * | 2015-06-30 | 2015-10-28 | 河南平高电气股份有限公司 | Control valve and circuit breaker hydraulic operating mechanism using control valve |
| CN105351275A (en) * | 2015-11-06 | 2016-02-24 | 河南平芝高压开关有限公司 | Integrated valve and circuit breaker hydraulic operating mechanism with integrated valve |
| CN105443463A (en) * | 2015-12-01 | 2016-03-30 | 河南平芝高压开关有限公司 | Anti-jumping switch-on-off hydraulic operation mechanism and breaker with operation mechanism |
| CN112503043B (en) * | 2020-03-20 | 2021-11-16 | 平高集团有限公司 | Hydraulic operating mechanism and hydraulic control valve |
| CN112503044B (en) * | 2020-03-20 | 2022-12-16 | 国网上海市电力公司 | Hydraulic control valve and hydraulic operating mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3832502A (en) * | 1971-06-04 | 1974-08-27 | Siemens Ag | Electric circuit breaker with hydraulic actuating means including a plurality of valves for opening the breaker,and a plurality of valves for closing the breaker |
| CH646010A5 (en) * | 1979-12-17 | 1984-10-31 | Bbc Brown Boveri & Cie | Hydraulic drive for an electric circuit breaker |
| CN2119711U (en) * | 1992-03-02 | 1992-10-21 | 西安高压开关厂 | Hydraulic operating mechanism for high-voltage circuit breaker |
-
1993
- 1993-07-29 CN CN93109385A patent/CN1034145C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3832502A (en) * | 1971-06-04 | 1974-08-27 | Siemens Ag | Electric circuit breaker with hydraulic actuating means including a plurality of valves for opening the breaker,and a plurality of valves for closing the breaker |
| CH646010A5 (en) * | 1979-12-17 | 1984-10-31 | Bbc Brown Boveri & Cie | Hydraulic drive for an electric circuit breaker |
| CN2119711U (en) * | 1992-03-02 | 1992-10-21 | 西安高压开关厂 | Hydraulic operating mechanism for high-voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1083967A (en) | 1994-03-16 |
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