CN203839931U - High-voltage safeguard switch cover-opening automatic power-off protection circuit and high-voltage safeguard switch apparatus - Google Patents
High-voltage safeguard switch cover-opening automatic power-off protection circuit and high-voltage safeguard switch apparatus Download PDFInfo
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- CN203839931U CN203839931U CN201420004568.6U CN201420004568U CN203839931U CN 203839931 U CN203839931 U CN 203839931U CN 201420004568 U CN201420004568 U CN 201420004568U CN 203839931 U CN203839931 U CN 203839931U
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- switch
- high voltage
- voltage safeguard
- safeguard switch
- protection circuit
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Abstract
The utility model provides a high-voltage safeguard switch cover-opening automatic power-off protection circuit and a high-voltage safeguard switch apparatus. The circuit comprises a travel switch which is opened and closed with the opening/closing of a rear cover plate of the high-voltage safeguard switch apparatus. The travel switch is provided with a normally open contact used for controlling the opening/closing of the high-voltage safeguard switch. The high-voltage safeguard switch cover-opening automatic power-off protection circuit provided by the utility model has the travel switch pressed by the rear cover plate and closed when the rear cover plate of the high-voltage safeguard switch apparatus is closed. The normally open contact is thus controlled to be closed. The high-voltage safeguard switch is controlled to have a power delivery condition. When the rear cover plate is opened, the travel switch is automatically opened. The normally open contact is thus controlled to be open. The high-voltage safeguard switch is controlled to be open and further has no condition for power delivery.
Description
Technical field
The utility model relates to down-hole high voltage safeguard switch power-off protection technology, relates in particular to a kind of high voltage safeguard switch uncap automatic power-off protection circuit and high voltage safeguard switch device.
Background technology
Down-hole high voltage safeguard switch is pressed the existing relative protection of code requirement at present; as overcurrent, under voltage, overvoltage, selective earth leakage protection; switch Qianmen and isolation trolley have safety interlock for overhead; between circuit-breaker switching on-off and isolation trolley, there is safety interlock for overhead; but after high voltage safeguard switch, load wire connection cavity back shroud does not have power-off interlocking while opening.Before high voltage safeguard switch back shroud is opened at present, what lean on is all manually isolation latch and vacuum circuit-breaker to be placed in to open position, and switch itself is not opened rear wire connection cavity cover plate and auto-breaking interlock.In maintenance process, time have busy phenomenon and people's unsafe factor, may in the situation that circuit breaker does not have separating brake, open back shroud, or may, opening back shroud maintenance mistiming power transmission, cause electric shock accidents.
Utility model content
The utility model provides a kind of high voltage safeguard switch uncap automatic power-off protection circuit and high voltage safeguard switch device; be used for overcoming defect of the prior art, in the time opening load wire connection cavity back shroud, realize auto-breaking; in the time forgetting artificial separating brake, also can avoid electric shock accidents, improve maintenance safety rate simultaneously.
The utility model provides the high voltage safeguard switch automatic power-off protection circuit of uncapping, and this circuit comprises a travel switch for opening and closing with the folding of high voltage safeguard switch device back shroud, and described travel switch is provided with one for controlling the normally opened contact of described high voltage safeguard switch folding.
Further, this protective circuit also comprises turns round sub-switch, described in to turn round sub-switch in parallel with described travel switch.For convenient maintenance and processing accident, stir in the state of accident and turn round sub-switch and make its junction closure, decompression coil electricity, just circuit breaker possesses power transmission condition, thus convenient maintenance circuit and in time recovery power transmission.
The utility model also comprises a kind of high voltage safeguard switch device; this device comprises high voltage safeguard switch and disconnects for controlling described high voltage safeguard switch the control circuit closing; described control circuit comprises that one is wound in the decompression coil on an iron core; control circuit also comprises the above-mentioned high voltage safeguard switch automatic power-off protection circuit of uncapping, and the described high voltage safeguard switch automatic power-off protection circuit of uncapping is connected with described decompression coil.
Further, this device comprises a switch enclosure, and described switch enclosure has a rear wire connection cavity for connected load, and rear wire connection cavity is provided with the back shroud for rear wire connection cavity described in folding, and described travel switch is fixed on rear wire connection cavity sidewall.
Wherein, described rear wire connection cavity sidewall is provided with adjustable bakelite fixed head, and travel switch is arranged on described adjustable bakelite fixed head.
The high voltage safeguard switch that the utility model provides uncap automatic power-off protection circuit and high voltage safeguard switch device; for fear of the electric shock accidents of opening back shroud and causing; do not affecting switching technique performance; do not change in the situation of rear wire connection cavity dischargeable capacity and explosion insulation performance; the rear wire connection cavity of down-hole high voltage safeguard switch is installed out additional to back shroud auto-breaking inter-lock circuit; after on post-planking cover when wire connection cavity; travel switch closure; normally opened contact closure; decompression coil obtains electric; iron core adhesive, high voltage safeguard switch circuit breaker could close a floodgate.In the time that back shroud is opened rear wire connection cavity, travel switch disconnects, and normally opened contact disconnects, decompression coil losing electricity, and decompression iron-core coil stretches out actuating mechanism, the breaker open operation of high voltage safeguard switch, high voltage safeguard switch disconnects.Open disconnection travel switch by back shroud, thereby control high voltage safeguard switch power-off, by the closing stroke switch that closes of back shroud, thereby control high voltage safeguard switch energising, realize uncovering power-off, closed the interlocked control that lid can power transmission, and there is simple in structure, maintenance convenience, reliable in action, advantage safely and efficiently.
Brief description of the drawings
The schematic diagram of the protective circuit that Fig. 1 provides for the utility model embodiment.
Embodiment
As shown in Figure 1; the utility model provides a kind of high voltage safeguard switch automatic power-off protection circuit 10 of uncapping; this automatic power-off protection circuit comprises a travel switch 1 for opening and closing with the folding of high voltage safeguard switch device back shroud, while being parallel with a normally opened contact 2 for inspection, maintenance, fixes a breakdown rapidly on travel switch 1.
The high voltage safeguard switch that the utility model the provides automatic power-off protection circuit of uncapping, when the back shroud of high voltage safeguard switch device is closed, travel switch 1, is closed a floodgate to high voltage safeguard switch 3 and creates preconditions in closure state by back shroud pressing, just can be by the switch knob energising of closing a floodgate.When back shroud is opened, travel switch 1 is opened automatically, and decompression electromagnet power-off iron core stretches out, and touches breaker mechanism it is threaded off, and disconnects power-off thereby control high voltage safeguard switch circuit breaker.
For convenient maintenance and processing accident, turn round sub-switch 2 in parallel with travel switch 1.Under normal condition, turn round sub-switch 2 in off-state, decompression coil 4 is switched on and power-off by travel switch control; Only have and just this is turned round to sub-switch 2 in the state of accident and get to closure and make decompression coil electricity, thus convenient maintenance circuit and recover in time power transmission; Send and availablely in situation about not powering on turn round sub-switch and get to the closed inspection decompression loop power transmission of fixing a breakdown in time.
The loop of rear wire connection cavity travel switch composition, after on post-planking cover, travel switch 1 closure, decompression coil 4 electric, the circuit breaker lock that just can close.When back shroud is opened, travel switch 1 moves and disconnects, decompression coil losing electricity, and stamp stem stretches out, and actuating mechanism makes breaker open operation, has realized the object of uncovering power-off.
Turn round the inspection loop of sub-switch composition, turning round under normal circumstances sub-switch is open position, when switch closes not brake application, or in the situation of decompression coil 4 not adhesives, suspect that back shroud travel switch does not have closure, for timely power transmission, can utilize and turn round sub-switch loop, turn round sub-switch and get to closure, as the adhesive of decompression coil, temporary is turned round the timely power transmission in sub-switch loop, and processing again has a power failure when Awaiting Overhaul.
The utility model also comprises a kind of high voltage safeguard switch device; this device comprises high voltage safeguard switch 3 and disconnects for controlling high voltage safeguard switch the control circuit closing; control circuit comprises that one is wound in the decompression coil 4 on an iron core; control circuit also comprises the above-mentioned high voltage safeguard switch automatic power-off protection circuit 10 of uncapping, and the high voltage safeguard switch automatic power-off protection circuit 10 of uncapping is connected with decompression coil 4.
The high voltage safeguard switch protective device that the utility model provides; for fear of the electric shock accidents of opening back shroud and causing; do not affecting switching technique performance; do not change in the situation of rear wire connection cavity dischargeable capacity and explosion insulation performance, the rear wire connection cavity of down-hole high voltage safeguard switch installed out additional to back shroud auto-breaking inter-lock circuit, on post-planking cover after when wire connection cavity; travel switch 1 closure; decompression coil 4 obtains electric iron core adhesive, closes a floodgate to high voltage safeguard switch 3 and creates preconditions, by switch knob high voltage safeguard switch breaker closing.In the time that back shroud is opened, travel switch 1 disconnects, decompression coil 4 dead electricity, and after the power-off of decompression electromagnet, iron core stretches out, and touches breaker mechanism and threads off, and disconnects power-off thereby control high voltage safeguard switch circuit breaker.By back shroud open disconnection travel switch, thereby control high voltage safeguard switch 3 power-off, realized uncovering power-off, closed the interlocked control that lid just can power transmission, and there is simple in structure, reliable in action, advantage safely and efficiently.
When installation, artificially decompression coil line is disconnected, connect two control lines cause before and after on the seven-core terminal of chamber dividing plate, then draw the normal opened contact that this line is concatenated into travel switch from the other end of seven-core terminal.Turn round the decompression coil side that sub-switch is fixed on high voltage safeguard switch ante-chamber.
Further, this device comprises a switch enclosure, and switch enclosure has a rear wire connection cavity for connected load, and rear wire connection cavity is provided with the back shroud for wire connection cavity after folding, and travel switch 1 is fixed on rear wire connection cavity sidewall.
Wherein, rear wire connection cavity sidewall is provided with adjustable bakelite fixed head, and travel switch 1 is arranged on adjustable bakelite fixed head.Bakelite plate is fixed on the existing screw of switch sidewall, adjusts travel switch, can depression stroke after making on post-planking cover switch, make the normally opened contact can be completely closed, back shroud is removed and can reliably be disconnected.
Uncap after auto-power-off device through installing back shroud additional, as long as maintenance back cavity, in the time opening back shroud, circuit breaker will automatic brake separating, has realized the requirement of high voltage safeguard switch " operational procedure ": " while opening back shroud, must power-off ".In a rush maintainer, many people's maintenance are forgotten in power-off or misdelivery situation electric, electrical verification by mistake, also can not caused afterload chamber electric shock accidents.Guaranteed to open back shroud power down, opened back shroud and send and do not power on, avoided the generation of maintainer's electric shock accidents, safety benefit is remarkable.
With the principle of saving energy and reduce the cost, utilize existing resource, more than 20 yuan of money of every switch investment of oneself transformation just can be realized " operational procedure " and open the regulation of the necessary power-off of back shroud, remarkable in economical benefits.
Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model technology is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of the each embodiment technical scheme of the utility model.
Claims (5)
1. the high voltage safeguard switch automatic power-off protection circuit of uncapping; it is characterized in that; this circuit comprises a travel switch for opening and closing with the folding of high voltage safeguard switch device back shroud, and described travel switch is provided with one for controlling the normally opened contact of described high voltage safeguard switch circuit breaker folding.
2. the high voltage safeguard switch according to claim 1 automatic power-off protection circuit of uncapping, is characterized in that, also comprise and turn round sub-switch, described in to turn round sub-switch in parallel with described travel switch.
3. a high voltage safeguard switch device; this device comprises high voltage safeguard switch and disconnects for controlling described high voltage safeguard switch the control circuit closing; described control circuit comprises that one is wound in the decompression coil on an iron core; it is characterized in that; described control circuit also comprises the automatic power-off protection circuit of uncapping of the high voltage safeguard switch described in the claims 1 or 2, and the described high voltage safeguard switch automatic power-off protection circuit of uncapping is connected with described decompression coil.
4. high voltage safeguard switch device according to claim 3, it is characterized in that, this device comprises a switch enclosure, described switch enclosure has a rear wire connection cavity for connected load, described rear wire connection cavity is provided with the back shroud for wire connection cavity after folding, and described travel switch is fixed on rear wire connection cavity sidewall.
5. high voltage safeguard switch device according to claim 4, is characterized in that, described rear wire connection cavity sidewall is provided with adjustable bakelite fixed head, and described travel switch is arranged on described adjustable bakelite fixed head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004568.6U CN203839931U (en) | 2014-01-03 | 2014-01-03 | High-voltage safeguard switch cover-opening automatic power-off protection circuit and high-voltage safeguard switch apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004568.6U CN203839931U (en) | 2014-01-03 | 2014-01-03 | High-voltage safeguard switch cover-opening automatic power-off protection circuit and high-voltage safeguard switch apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839931U true CN203839931U (en) | 2014-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420004568.6U Expired - Fee Related CN203839931U (en) | 2014-01-03 | 2014-01-03 | High-voltage safeguard switch cover-opening automatic power-off protection circuit and high-voltage safeguard switch apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839931U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681569A (en) * | 2017-11-09 | 2018-02-09 | 徐州海伦哲专用车辆股份有限公司 | A kind of protective cover and its application method of copper bar terminals |
| CN107706887A (en) * | 2016-08-08 | 2018-02-16 | 上海宝钢工业技术服务有限公司 | Motor terminals box auto-power-off device |
-
2014
- 2014-01-03 CN CN201420004568.6U patent/CN203839931U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706887A (en) * | 2016-08-08 | 2018-02-16 | 上海宝钢工业技术服务有限公司 | Motor terminals box auto-power-off device |
| CN107681569A (en) * | 2017-11-09 | 2018-02-09 | 徐州海伦哲专用车辆股份有限公司 | A kind of protective cover and its application method of copper bar terminals |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20190103 |