CN102646526B - Vacuum circuit breaker and grounding switch interlocking mechanism - Google Patents
Vacuum circuit breaker and grounding switch interlocking mechanism Download PDFInfo
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- CN102646526B CN102646526B CN201210146164.6A CN201210146164A CN102646526B CN 102646526 B CN102646526 B CN 102646526B CN 201210146164 A CN201210146164 A CN 201210146164A CN 102646526 B CN102646526 B CN 102646526B
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- wedge block
- interlock plate
- plate wedge
- connecting plate
- circuit breaker
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Abstract
The invention discloses a vacuum circuit breaker and grounding switch interlocking mechanism which comprises a grounding switch operating mechanism and a circuit breaker interlocking plate, wherein the grounding switch operating mechanism is provided with a connecting plate, the interlocking mechanism is provided with a support plate, a connecting plate wedge-shaped slider is arranged on the connecting plate, an interlocking plate wedge-shaped slider is arranged on the support plate, the circuit breaker interlocking plate is in contact with a guide rod behind the interlocking plate wedge-shaped slider, movement directions of the connecting plat wedge-shaped slider and the interlocking plate wedge-shaped slider are mutually vertical, and the connecting plate wedge-shaped slider is in sliding connection with the interlocking plate wedge-shaped slider through a slope. By adopting the technical scheme, the standardization degree of the interlocking mechanism is improved, working principle and structure are simple; the vacuum circuit breaker and grounding switch interlocking mechanism has the advantages of being simple in part manufacture process, lowering production cost, shortening production period, being high in interlocking reliability, improving quality, being free of maintenance in a use process, and greatly increasing working efficiency.
Description
Technical field
The invention belongs to the technical field of power switchgear, relate to five anti-interlocking technologies of metal armored withdrawal-type switching device, more particularly, the present invention relates to a kind of vacuum circuit-breaker and earthed switch interlocking device.
Background technology
At present, 40.5kV metal armored withdrawal-type switching device that domestic each power supply unit manufacturing firm produces (hereinafter referred to as: switchgear), between vacuum circuit-breaker wherein and earthed switch, the design of interlocking device is multifarious, mechanism's complexity differs, the reliability of interlocking device unstable; The height of the reliability that " five prevent " in switchgear interlocks, is directly connected to the safe operation of switchgear, the life security of operating personnel.
Cause the main cause of the problems referred to above to be manufacturers numerous (as VD4-40.5, VEP-40.5, ZN85-40.5 etc.) of switchgear inner core components and parts 40.5kV handcart type vacuum circuit breaker, vacuum circuit-breaker " five prevent " interlock method difference is large.
Enumerate the otherness of representative strong VD4 and ZN85 vacuum circuit-breaker interlocking device:
1, interlock plate position is different; 2, flexible stroke L1 with L2 of interlock plate is different, as shown in Fig. 1, the Fig. 2 in this Figure of description.
Each power supply unit manufacturing firm needs to carry out targeted design to interlocking device between often kind of vacuum circuit-breaker and earthed switch, will cause like this: 1, design efforts would is large; 2, amount of parts is many; 3, Installation and Debugging are loaded down with trivial details; 4, efficiency is produced in batches low.
Summary of the invention
The invention provides a kind of vacuum circuit-breaker and earthed switch interlocking device, its objective is the reliability that the standardization level that improves switchgear interlocking device and " five prevent " interlock.
To achieve these goals, the technical scheme that the present invention takes is:
Vacuum circuit-breaker provided by the present invention and earthed switch interlocking device, comprise earthing switch operating mechanism and circuit breaker interlock plate, described earthing switch operating mechanism establishes connecting plate, described interlocking device establishes supporting bracket, described connecting plate is established connecting plate wedge block, described supporting bracket is established interlock plate wedge block; Described circuit breaker interlock plate contacts with the guide rod after described interlock plate wedge block; Described connecting plate wedge block and the direction of motion of interlock plate wedge block orthogonal; Described connecting plate wedge block and interlock plate wedge block are slidably connected by inclined-plane.
Described supporting bracket establishes back-moving spring, and described back-moving spring is enclosed within described interlock plate wedge block guide rod below, and the action direction of its spring force makes described interlock plate wedge block press to connecting plate wedge block.
Described circuit breaker interlock plate and described interlock plate wedge block motion each other, on the same line stressed.
When described earthed switch is in gate-dividing state, described connecting plate wedge block upward sliding is to extreme higher position, the horizontal slip under the effect of back-moving spring of described interlock plate wedge block, makes circuit breaker interlock plate return to reset condition, now can operate vacuum circuit-breaker;
When described earthed switch is in "on" position, described connecting plate wedge block slides down to extreme lower position, the horizontal slip under the effect of connecting plate wedge block of described interlock plate wedge block, make circuit breaker interlock plate be compressed to Interlock Status, now can not carry out any operation to vacuum circuit-breaker; Otherwise when vacuum circuit-breaker is in test, gate-dividing state, circuit breaker interlock plate can carry out free-extension, and interlock plate wedge block can level be free to slide, and now can carry out breaking-closing operating to earthed switch;
When vacuum circuit-breaker is in service position or leaves any position of test position, described circuit breaker interlock plate works, can not carry out free-extension, described connecting plate wedge block is trapped in extreme higher position under the effect of interlock plate wedge block, now cannot operate described earthed switch.
The setting of the gradient on described inclined-plane, makes the normal pressure on inclined-plane towards the component of the described interlock plate wedge block direction of motion, is greater than towards the component in the described connecting plate wedge block direction of motion.
The present invention adopts technique scheme, improves the standardization level of interlocking device, and its principles and structure is simple; This mechanism's parts manufacture craft is simple, reduces production cost, shortens the production cycle; The reliability of interlocking is high, improves product quality; Product use procedure is non-maintaining, greatly increases work efficiency.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is VD4-40.5 vacuum circuit-breaker interlocking device partial view;
Fig. 2 is ZN85-40.5 vacuum circuit-breaker interlocking device partial view;
Fig. 3 is the interlocking schematic diagram that the present invention applies between VD4 vacuum circuit-breaker and earthed switch;
Fig. 4 is the interlocking schematic diagram that the present invention applies between ZN85 vacuum circuit-breaker and earthed switch;
Fig. 5 is the motion of wedge block interlocking device and stress schematic diagram;
Fig. 6 is that C in Fig. 5 is to schematic diagram;
Fig. 7 is the stressed schematic diagram of wedge block;
Fig. 8 is the mathematical relationship schematic diagram that in Fig. 7, θ angle and interlock plate stretch between stroke L.
Be labeled as in figure:
1, connecting plate wedge block, 2, interlock plate wedge block, 3, back-moving spring, 4, connecting plate, 5, supporting bracket, 6, earthing switch operating mechanism, 7, wedge block interlocking device, 8, circuit breaker interlock plate, 9, switchgear body, 10, circuit breaker swing mechanism.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, specific embodiment of the invention side is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Structure of the present invention expressed by Fig. 3 to Fig. 6, for a kind of vacuum circuit-breaker and earthed switch interlocking device, be novel wedge block interlocking device 7(as shown in Figure 3 and Figure 4), for the interlocking between handcart type vacuum circuit breaker and earthed switch, belong to the technical field of 40.5kV armored metal withdrawing switch apparatus " five prevent " interlocking device.This interlocking comprises earthing switch operating mechanism 6 and circuit breaker interlock plate 8.Mainly solve the interlocking device's variation between vacuum circuit-breaker and earthed switch, complicated problem, can support the use with the 40.5kV vacuum circuit-breaker of most of manufacturer production.
Overcome its defect in order to the current known technology Problems existing that solves described in this specification background technology part, the goal of the invention of the reliability that the standardization level of realization raising switchgear interlocking device and " five prevent " are interlocked, the technical scheme that the present invention takes is:
As shown in Figures 3 to 6, the earthing switch operating mechanism 6 of vacuum circuit-breaker provided by the present invention and earthed switch interlocking device establishes connecting plate 4, described interlocking device establishes supporting bracket 5, described connecting plate 4 establishes connecting plate wedge block 1, described supporting bracket 5 establishes interlock plate wedge block 2; Described circuit breaker interlock plate 8 contacts with the guide rod after described interlock plate wedge block 2; Described connecting plate wedge block 1 is orthogonal with the direction of motion of interlock plate wedge block 2; Described connecting plate wedge block 1 is slidably connected by inclined-plane with interlock plate wedge block 2.
The present invention is applied to respectively the interlocking between VD4, ZN85 vacuum circuit-breaker and earthed switch:
According to the otherness of above-mentioned Liang Zhong circuit breaker interlocking device, " wedge shape " slide block interlocking device is arranged in the corresponding appropriate location of switchgear (as shown in Figure 3, Figure 4), namely between earthing switch operating mechanism and circuit breaker interlock plate; If the distance in switchgear between earthed switch from circuit breaker interlock plate different (the size A in Fig. 3 and Fig. 4 is not equal to B), distance A between the two or B is by regulating the length of connecting plate 4.
Consider that flexible stroke L1, L2 of two kinds of circuit breaker interlock plates are different, only need to finely tune slider tilt angle [alpha], β can (θ in fact, in α, β and Fig. 7 and Fig. 8 and complementary angle thereof).This interlocking device is directly installed on position required on switchgear, plug and play, without the need to adjustment.The method can apply to other vacuum circuit-breaker.
Invention increases the reliability of " five prevent " interlocking device of 40.5kV armored metal withdrawing switch apparatus and similar devices, batch production efficiency, standardization level, reduce design efforts would, and perfect " five prevent " interlocking device's technology further.Its outstanding feature is: 1, standardization level is high; 2, principles and structure is simple; 3, this mechanism's parts manufacture craft is simple; 4, Interlock Reliability is high; 5, non-maintaining; 6, greatly increase work efficiency.
Described supporting bracket 5 establishes back-moving spring 3, and described back-moving spring 3 is enclosed within described interlock plate wedge block 2 guide rod below, and the action direction of its spring force makes described interlock plate wedge block 2 press to connecting plate wedge block 1.
Described circuit breaker interlock plate 8 and described interlock plate wedge block 2 motion each other, on the same line stressed.
As shown in Figure 6: circuit breaker interlock plate 8 and interlock plate wedge block 2 motion each other in " wedge shape " slide block interlocking device 7, on the same line stressed, Impact direction overlaps with the dotted line 1 in figure, dotted line 2, there is no dislocation spatially between the two, torsional stress and bending stress can not be produced, only there is compression, such circuit breaker interlock plate 8 and interlock plate wedge block 2 can not produce distortion, uniform force, make interlocking reliable, stable.
" wedge shape " of the present invention slide block interlocking device mentality of designing (for VD4-40.5 vacuum circuit-breaker, it is analyzed content and is equally applicable to other vacuum circuit-breakers such as ZN85):
1, operation principle:
Connecting plate 4 is directly connected with switchgear body 9 with supporting bracket 5, and connecting plate 4 is connected with connecting plate wedge block 1, can slide up and down;
Described circuit breaker interlock plate 8 is located on circuit breaker swing mechanism 10, and interlock plate wedge block 2 is arranged in supporting bracket 5, and interlock plate wedge block 2 can horizontally slip (as shown in Figure 5), realizes the interlock of the following stated:
When described earthed switch is in gate-dividing state, described connecting plate wedge block 1 upward sliding is to extreme higher position, described interlock plate wedge block 2 horizontal slip under the effect of back-moving spring 3 (slip to the right as shown in Figure 5 and Figure 6), make circuit breaker interlock plate 8 return to reset condition, now can operate vacuum circuit-breaker;
When described earthed switch is in "on" position, described connecting plate wedge block 1 slides down to extreme lower position, described interlock plate wedge block 2 horizontal slip under the effect of connecting plate wedge block 1 (slip left as shown in Figure 5 and Figure 6), make circuit breaker interlock plate 8 be compressed to Interlock Status, now can not carry out any operation to vacuum circuit-breaker; Otherwise when vacuum circuit-breaker is in test, gate-dividing state, circuit breaker interlock plate 8 can carry out free-extension, and interlock plate wedge block 2 can level be free to slide, and now can carry out breaking-closing operating to earthed switch;
When vacuum circuit-breaker is in service position or leaves any position of test position, described circuit breaker interlock plate 8 works, free-extension can not be carried out, described connecting plate wedge block 1 is trapped in extreme higher position under the effect of interlock plate wedge block 2, now cannot operate described earthed switch.
2, force analysis:
The setting of the gradient on above-described inclined-plane, makes the normal pressure on inclined-plane towards the component of described interlock plate wedge block 2 direction of motion, is greater than towards the component in described connecting plate wedge block 1 direction of motion.
To the setting of above-mentioned slope, its stress is pressed shown in Fig. 7 and Fig. 8, is analyzed as follows:
Because the contact-making surface between supporting bracket 5 and interlock plate wedge block 2 is little, consequent frictional force is ignored, during circuit breaker interlock plate 8 free state, the active force that interlock plate wedge block 2 produces is ignored, get D point and force analysis (as shown in Figure 7) is carried out to interlock plate wedge block 2: F: connecting plate wedge block 1 puts on the power on interlock plate wedge block 2 through inclined-plane;
F1=Fsinθ；F2=Fcosθ；
Get 45 ° of < θ < 90 °, F1 > F2;
Now interlock plate wedge block 2 is under the effect of component F1, slides left.
In order to reduce the external force size put on connecting plate wedge block 1, making whole mechanism more flexible, laborsaving, θ angle should be strengthened as far as possible, make component F1 much larger than component F2.
θ angle and interlock plate stretch the mathematical relationship (getting D point in Fig. 5 and Fig. 7 to analyze) between stroke L:
Get connecting plate wedge block 1 slide up and down stroke be definite value C, θ angle and the interlock plate mathematical relationship of stretching between stroke L as shown in Figure 8:
Interlock plate stretches stroke L=Ccotan θ, (45 ° < θ < 90 °).
According to the flexible stroke of different vacuum circuit-breaker interlock plates, determine different θ angle value, the fit dimension between connecting plate wedge block 1 and interlock plate wedge block 2 can be determined like this, realize the Seriation Design of interlocking device.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (2)
1. vacuum circuit-breaker and an earthed switch interlocking device, comprises earthing switch operating mechanism (6) and circuit breaker interlock plate (8), it is characterized in that:
Described earthing switch operating mechanism (6) establishes connecting plate (4), and described interlocking device establishes supporting bracket (5);
Described connecting plate (4) establishes connecting plate wedge block (1), described supporting bracket (5) establishes interlock plate wedge block (2);
Described circuit breaker interlock plate (8) contacts with the guide rod after described interlock plate wedge block (2);
Described connecting plate wedge block (1) is orthogonal with the direction of motion of interlock plate wedge block (2);
Described connecting plate wedge block (1) and interlock plate wedge block (2) are slidably connected by inclined-plane;
Described supporting bracket (5) establishes back-moving spring (3), described back-moving spring (3) is enclosed within described interlock plate wedge block (2) guide rod below, and the action direction of its spring force makes described interlock plate wedge block (2) press to connecting plate wedge block (1);
Described circuit breaker interlock plate (8) and described interlock plate wedge block (2) motion each other, on the same line stressed;
Described circuit breaker interlock plate (8) is located on circuit breaker swing mechanism (10);
When described earthed switch is in gate-dividing state, described connecting plate wedge block (1) upward sliding is to extreme higher position, the horizontal slip under the effect of back-moving spring (3) of described interlock plate wedge block (2), make circuit breaker interlock plate (8) return to reset condition, now can operate vacuum circuit-breaker;
When described earthed switch is in "on" position, described connecting plate wedge block (1) slides down to extreme lower position, the horizontal slip under the effect of connecting plate wedge block (1) of described interlock plate wedge block (2), make circuit breaker interlock plate (8) be compressed to Interlock Status, now can not carry out any operation to vacuum circuit-breaker; Otherwise when vacuum circuit-breaker is in test, gate-dividing state, circuit breaker interlock plate (8) can carry out free-extension, and interlock plate wedge block (2) can level be free to slide, and now can carry out breaking-closing operating to earthed switch;
When vacuum circuit-breaker is in service position or leaves any position of test position, described circuit breaker interlock plate (8) is worked, free-extension can not be carried out, described connecting plate wedge block (1) is trapped in extreme higher position under the effect of interlock plate wedge block (2), now cannot operate described earthed switch.
2. according to vacuum circuit-breaker according to claim 1 and earthed switch interlocking device, it is characterized in that: the setting of the gradient on described inclined-plane, make the normal pressure on inclined-plane towards the component of described interlock plate wedge block (2) direction of motion, be greater than towards the component in described connecting plate wedge block (1) direction of motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210146164.6A CN102646526B (en) | 2012-05-11 | 2012-05-11 | Vacuum circuit breaker and grounding switch interlocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210146164.6A CN102646526B (en) | 2012-05-11 | 2012-05-11 | Vacuum circuit breaker and grounding switch interlocking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102646526A CN102646526A (en) | 2012-08-22 |
| CN102646526B true CN102646526B (en) | 2015-07-08 |
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| CN201210146164.6A Expired - Fee Related CN102646526B (en) | 2012-05-11 | 2012-05-11 | Vacuum circuit breaker and grounding switch interlocking mechanism |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227064B (en) * | 2013-04-23 | 2015-08-19 | 镇江大全伊顿电器有限公司 | Medium Voltage Switchgear earthed switch and circuit breaker interlocking device |
| CN103337802B (en) * | 2013-07-19 | 2015-11-18 | 国家电网公司 | The interlock that after preventing ground cutter from closing a floodgate in switch cubicle, handcart pushes by mistake |
| CN104282464B (en) * | 2014-10-30 | 2017-01-11 | 向荣集团有限公司 | Breaker interlocking mechanism for switch cabinet |
| CN104485555B (en) * | 2014-12-19 | 2017-10-27 | 广东美的厨房电器制造有限公司 | Universal base component |
| CN106960769B (en) * | 2016-12-26 | 2018-12-21 | 杜文福 | A kind of open circuit safety lock and double power supply converting switch |
| CN107086145B (en) * | 2017-05-24 | 2019-06-11 | 句容市福润电气有限公司 | Flatly moving type indoor hv earthing switch |
Citations (3)
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|---|---|---|---|---|
| CN201032613Y (en) * | 2007-02-16 | 2008-03-05 | 常熟开关制造有限公司(原常熟开关厂） | Interlocking device for switching equipment |
| CN201508792U (en) * | 2009-08-21 | 2010-06-16 | 三实电器(漳州)有限公司 | Inching switch head portion acting mechanism |
| CN202678158U (en) * | 2012-05-11 | 2013-01-16 | 芜湖明远电力设备制造有限公司 | Vacuum circuit breaker and grounding switch interlocking mechanism |
-
2012
- 2012-05-11 CN CN201210146164.6A patent/CN102646526B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032613Y (en) * | 2007-02-16 | 2008-03-05 | 常熟开关制造有限公司(原常熟开关厂） | Interlocking device for switching equipment |
| CN201508792U (en) * | 2009-08-21 | 2010-06-16 | 三实电器(漳州)有限公司 | Inching switch head portion acting mechanism |
| CN202678158U (en) * | 2012-05-11 | 2013-01-16 | 芜湖明远电力设备制造有限公司 | Vacuum circuit breaker and grounding switch interlocking mechanism |
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| Publication number | Publication date |
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| CN102646526A (en) | 2012-08-22 |
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Owner name: ANHUI MINGYUAN POWER EQUIPMENT MANUFACTURE LTD. Free format text: FORMER NAME: WUHU MINGYUAN ELECTRICAL EQUIPMENT MANUFACTURE CO., LTD. |
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Address after: 241000 Anhui province Wuhu Auto City of Yijiang high tech Industrial Development Zone, Road No. 18 Patentee after: Anhui Mingyuan Power Equipment Manufacture Ltd. Address before: 241000 Anhui province Wuhu Auto City of Yijiang high tech Industrial Development Zone, Road No. 18 Patentee before: Wuhu Mingyuan Electrical Equipment Manufacture Co., Ltd. |
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Granted publication date: 20150708 Termination date: 20210511 |
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