CN110635382A - Locking method and device for switch cabinet and valve driving device - Google Patents
Locking method and device for switch cabinet and valve driving device Download PDFInfo
- Publication number
- CN110635382A CN110635382A CN201810653828.5A CN201810653828A CN110635382A CN 110635382 A CN110635382 A CN 110635382A CN 201810653828 A CN201810653828 A CN 201810653828A CN 110635382 A CN110635382 A CN 110635382A
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- China
- Prior art keywords
- switch cabinet
- module
- switch
- electrified
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
Abstract
The invention relates to a locking method and a locking device for a switch cabinet and a valve driving device, which are characterized in that an electrified detection module is arranged to detect the electrified condition of a primary power supply of the switch cabinet, a limit module is arranged to detect the pulling-out condition of a handcart in the switch cabinet, and when a locking module receives the information of the electrified detection module and the limit module, the valve driving device of the switch cabinet is automatically and forcibly locked when the primary power supply of the switch cabinet is electrified and the handcart in the switch cabinet is pulled out, so that electric shock accidents caused by manual opening of the valve by maintenance personnel under the condition that the primary power supply side of the switch cabinet is electrified are prevented.
Description
Technical Field
The invention belongs to the technical field of electromechanical equipment of a switch cabinet, and particularly relates to a locking method and device of a switch cabinet and a valve driving device.
Background
The switch cabinet is used as an electrical device and mainly used for opening, closing, controlling and protecting in the power generation, transmission, distribution and electric energy conversion processes of an electric power system. When the handcart is put into operation or routinely overhauled, a handcart of the middle-set switch cabinet often needs to be pulled out of the switch cabinet, and the situation that the primary power supply side of the switch cabinet cannot be powered off exists. In order to remind the maintainer that the high voltage of the primary power supply side of a switch cabinet is electrified, the current solution is that a handcart is pulled out of the cabinet, and then a 'stop step, high voltage danger' signboard is hung, so that when the safety consciousness of the maintainer is thin and illegal or the misoperation opens a switch cabinet valve, the potential safety hazard of electric shock of the maintainer can be caused.
Disclosure of Invention
The invention aims to provide a locking method and a locking device for a switch cabinet and a valve driving device, which are used for solving the problem that in the prior art, electric shock accidents caused by manual opening of a valve by a maintainer under the condition that a primary power supply side of the switch cabinet is electrified cannot be effectively prevented.
In order to solve the technical problem, the invention provides a locking device of a switch cabinet valve driving device, which comprises a live detection module, a limit module and a locking module, wherein the live detection module is used for detecting the live condition of a primary power supply of a switch cabinet, the limit module is used for detecting the pulling-out condition of a handcart in the switch cabinet, the locking module is used for determining whether the switch cabinet valve driving device is locked or not according to the detection results of the live detection module and the limit module, and when the primary power supply of the switch cabinet is detected to be live and the handcart in the switch cabinet is pulled out, the switch cabinet valve driving device is locked.
The invention detects the electrification condition of the primary power supply of the switch cabinet through the arranged electrification detection module, detects the pulling-out condition of the handcart in the switch cabinet through the arranged limit module, automatically and forcibly locks the valve driving device of the switch cabinet when the locking module receives the information of the electrification detection module and the limit module and detects that the primary power supply of the switch cabinet is electrified and the handcart in the switch cabinet is pulled out, thereby preventing electric shock accidents caused by manual opening of the valve by maintainers under the condition that the side of the primary power supply of the switch cabinet is electrified.
As a further limitation to the live detection module, the live detection module comprises: the sensor is used for detecting a signal of a primary power supply of the switch cabinet; and the first processing module is connected with the sensor and used for judging whether the primary power supply of the switch cabinet is electrified or not according to the signal of the primary power supply of the switch cabinet.
Further, the electrified detection module further comprises a first switch, the first switch is connected with the locking module, and the first switch is used for being closed when the first processing module judges that the primary power supply of the switch cabinet is electrified.
As a further limitation to the limit module, the limit module comprises a travel switch or a displacement switch, or a position sensor.
Furthermore, the limiting module further comprises a second processing module and a second switch, the second processing module is in control connection with the second switch, the second switch is connected with the locking module, and the second processing module is used for controlling the second switch to be closed according to the pulling-out information of the handcart in the switch cabinet detected by the travel switch, the displacement switch or the position sensor.
As the further limitation to the locking module, the locking module comprises a lock shell, an electromagnet and a telescopic mechanical spring bolt are installed in the lock shell, the electromagnet is connected in the power supply branch, and the telescopic mechanical spring bolt is used for extending out of the lock shell to lock the valve driving device of the switch cabinet when the electromagnet is electrified.
In order to solve the technical problem, the invention also provides a locking method of the switch cabinet valve driving device, which comprises the following steps:
1) detecting the electrification condition of a primary power supply of a switch cabinet and the pulling-out condition of a handcart in the switch cabinet;
2) and when the primary power supply of the switch cabinet is electrified and the handcart in the switch cabinet is pulled out, the valve driving device of the switch cabinet is locked.
In order to solve the technical problem, the invention further provides a switch cabinet, which comprises a valve driving device and a locking device for controlling the valve driving device, wherein the locking device comprises a live detection module, a limit module and a locking module, the live detection module is used for detecting the live condition of a primary power supply of the switch cabinet, the limit module is used for detecting the pull-out condition of a handcart in the switch cabinet, the locking module is used for determining whether to lock the switch cabinet valve driving device or not according to the detection results of the live detection module and the limit module, and when the fact that the primary power supply of the switch cabinet is live and the handcart in the switch cabinet is pulled out is detected, the switch cabinet valve driving device is locked.
As a further limitation of the switchgear, the live detection module comprises: the sensor is used for detecting a signal of a primary power supply of the switch cabinet; and the first processing module is connected with the sensor and used for judging whether the primary power supply of the switch cabinet is electrified or not according to the signal of the primary power supply of the switch cabinet.
Further, the electrified detection module further comprises a first switch, the first switch is connected with the locking module, and the first switch is used for being closed when the first processing module judges that the primary power supply of the switch cabinet is electrified.
As a further limitation to the limit module, the limit module comprises a travel switch or a displacement switch, or a position sensor.
Furthermore, the limiting module further comprises a second processing module and a second switch, the second processing module is in control connection with the second switch, the second switch is connected with the locking module, and the second processing module is used for controlling the second switch to be closed according to the pulling-out information of the handcart in the switch cabinet detected by the travel switch, the displacement switch or the position sensor.
As the further limitation to the locking module, the locking module comprises a lock shell, an electromagnet and a telescopic mechanical spring bolt are installed in the lock shell, the electromagnet is connected in the power supply branch, and the telescopic mechanical spring bolt is used for extending out of the lock shell to lock the valve driving device of the switch cabinet when the electromagnet is electrified.
Drawings
FIG. 1 is a schematic diagram of a power supply circuit for a locking device;
FIG. 2 is a schematic illustration of a method for locking a drive for a door of a switchgear cabinet;
fig. 3 is a schematic illustration of a method for unlocking a drive for a shutter of a switchgear cabinet;
FIG. 4 is a mechanical schematic of a locking device;
fig. 5 is a schematic view of an application scenario of the locking device.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The first embodiment is as follows:
the invention provides a locking device of a switch cabinet valve driving device, which comprises a live detection module, a limit module and a locking module, wherein the locking module is respectively connected with the live detection module and the limit module, the live detection module is used for detecting the live condition of a primary power supply of a switch cabinet, the limit module is used for detecting the pulling condition of a handcart in the switch cabinet, the locking module is used for determining whether to lock the switch cabinet valve driving device or not according to the detection results of the live detection module and the limit module, and when the fact that the primary power supply of the switch cabinet is electrified and the handcart in the switch cabinet is pulled out is detected, the switch cabinet valve driving device is locked.
The locking method of the locking device comprises the following steps:
1) the live detection module detects the live condition of a primary power supply of the switch cabinet, and the limit module detects the pull-out condition of a handcart in the switch cabinet;
2) when the electrified detection module detects that the primary power supply of the switch cabinet is electrified and the limit module detects that the handcart in the switch cabinet is pulled out, the locking module automatically and forcibly locks the valve driving device of the switch cabinet.
The invention detects the electrification condition of the primary power supply of the switch cabinet through the arranged electrification detection module, detects the pulling-out condition of the handcart in the switch cabinet through the arranged limit module, locks the valve driving device of the switch cabinet when the locking module receives the information of the electrification detection module and the limit module and detects that the primary power supply of the switch cabinet is electrified and the handcart in the switch cabinet is pulled out, thereby preventing electric shock accidents caused by manual opening of the valve by maintainers under the condition that the side of the primary power supply of the switch cabinet is electrified.
The above-mentioned electrification detecting module can adopt the following first embodiment:
the electrified detection module comprises a sensor and a first processing module, wherein the sensor is used for detecting a signal of a primary power supply of the switch cabinet; the first processing module connected with the sensor is used for judging whether the switch cabinet primary power supply is electrified or not according to the signal of the switch cabinet primary power supply.
Alternatively, the following second embodiment is adopted:
on the basis of the first embodiment, the electrification detecting module further comprises a first switch, the first switch is connected in series in a control branch of the locking valve driving device of the locking module, and when the first processing module judges that the primary power supply of the switch cabinet is electrified, the first switch is controlled to be closed, so that the locking module is allowed to send a control signal to the control branch of the locking valve driving device.
The limit module can adopt a travel switch or a displacement switch or a position sensor to detect the pull-out state of the handcart in the switch cabinet. Preferably, a second processing module and a second switch can be further added, the second processing module is in control connection with the second switch, the second switch is connected in series with a control branch of the locking valve driving device of the locking module, and the second processing module is used for controlling the second switch to be closed according to pull-out information of the handcart in the switch cabinet detected by the travel switch, the displacement switch or the position sensor.
Example two:
in order to solve the problem of electric shock accidents caused by that a handcart pulls out of a switch cabinet and a person opens a valve, the invention provides an automatic forced locking device of the following switch cabinet valve driving device:
the electrified retrieval module is used for acquiring the state information of whether the primary power supply side of the switch cabinet is electrified or not; the limiting module is used for acquiring the state information of whether the handcart is pulled out of the switch cabinet or not; and the locking module is used for automatically judging whether the switch cabinet valve driving device is locked or not according to the information provided by the electrified retrieval module and the limiting module.
Specifically, the electrified retrieval module comprises a high-voltage sensor, the output end of the high-voltage sensor is connected with the secondary display output module, the high-voltage sensor receives an ABC three-phase high-voltage electrified body electric field signal of the primary power supply side of the switch cabinet, the signal is transmitted to the secondary display output module to be compared and judged, and the electrified state of the primary power supply side of the switch cabinet is determined.
As shown in fig. 1, the power supply circuit of the locking device is respectively provided with a hard contact of the secondary display output module and a hard contact of the limiting module, and when the secondary display output module determines that the primary power supply side is electrified, the hard contact of the secondary display output module is controlled to be closed, specifically, when any one of the ABC three phases of the primary power supply side of the switch cabinet is electrified, the hard contact of the secondary display output module is controlled to be closed; when the primary power supply side is not electrified, the hard contact of the secondary display output module is controlled to be disconnected. When the limiting module judges that the handcart is pulled out of the switch cabinet, the hard contact of the limiting module is controlled to be closed, and when the handcart of the switch cabinet is not pulled out of the switch cabinet, the hard contact of the limiting module is kept in an off state. When the hard contact of the secondary display output module and the hard contact of the limiting module are both closed, the power supply loop of the locking device is conducted, and the valve driving device of the switch cabinet is controlled to be automatically and forcibly locked.
As shown in fig. 2, when the live retrieval module determines that the primary power supply side of the switch cabinet is live, and meanwhile, the limit module determines that the handcart is pulled out of the switch cabinet, the locking device electrically connected with the live retrieval module and the limit module triggers to automatically lock the valve driving device of the switch cabinet, and at the moment, the valve is not allowed to be opened.
As shown in fig. 3, when the live retrieval module determines that the primary power supply side of the switch cabinet is not charged, or the limit module determines that the handcart is not pulled out of the switch cabinet, the locking device electrically connected with the live retrieval module and the limit module is not triggered, and the valve driving device of the switch cabinet cannot be automatically locked; at this time, the shutter is allowed to open.
The electrified retrieval module controls the hard contact of the secondary output module to be closed or opened after acquiring the state information of whether the primary power supply side of the switch cabinet is electrified; after the limiting module acquires the state information of whether the handcart is pulled out of the switch cabinet or not, the hard contact of the limiting module is controlled to be closed or opened; the locking device is electrically connected with the electrified retrieval module and the limiting module, so that whether the locking device locks the switch cabinet valve driving device or not can be simply and conveniently determined according to the state information of whether the primary power supply side of the switch cabinet is electrified or not and whether the handcart is pulled out of the switch cabinet or not, and the safety of equipment and personnel is ensured.
The secondary display output module in this embodiment includes an electrified display having an electrified display function, or a single device having an electrified display function, or a multifunctional device having an electrified display function. The limit module in this embodiment is a travel switch having a function of identifying a position, or a displacement switch having a function of identifying a position, or a sensor having a function of identifying a position.
The locking module in this embodiment is shown in fig. 4 and 5, and includes a housing, an electromagnet and a mechanical latch bolt, where the electromagnet and the mechanical latch bolt are disposed in the housing, and the electromagnet is serially disposed in a power supply branch of the locking module, and the mechanical latch bolt is driven to extend or retract by on/off of current in the electromagnet, so as to achieve a function of locking or unlocking. The mechanical lock tongue automatically extends or retracts according to the on-off of the current in the electromagnet. When a certain current exists in a power supply branch of the locking module, the mechanical lock tongue automatically extends out; when no current exists in the power supply branch of the locking module, the mechanical lock tongue automatically retracts. The locking module of the present embodiment can be replaced by other locking modules in the prior art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a cubical switchboard valve drive arrangement's blocking device, a serial communication port, including electrified detection module, spacing module and locking module, wherein, electrified detection module is used for detecting the electrified condition of cubical switchboard primary power, spacing module is arranged in detecting the pull-out condition of handcart among the cubical switchboard, the locking module is used for confirming whether to block cubical switchboard valve drive arrangement according to electrified detection module and spacing module's testing result, when detecting that cubical switchboard primary power is electrified and handcart has pulled out in the cubical switchboard, block cubical switchboard valve drive arrangement.
2. The lockout device of a switchgear panel drive apparatus as claimed in claim 1, wherein the live detection module comprises:
the sensor is used for detecting a signal of a primary power supply of the switch cabinet;
and the first processing module is connected with the sensor and used for judging whether the primary power supply of the switch cabinet is electrified or not according to the signal of the primary power supply of the switch cabinet.
3. The locking device of the switch cabinet shutter driving device according to claim 2, wherein the electrification detecting module further comprises a first switch, the first switch is connected in series in a power supply branch of the locking module, and the first switch is used for being closed when the first processing module judges that the primary power supply of the switch cabinet is electrified.
4. The locking device of a switchgear panel drive as claimed in claim 1, characterized in that the limit module comprises a travel switch or a displacement switch, or a position sensor.
5. The locking device of the switch cabinet valve driving device according to claim 4, wherein the limiting module further comprises a second processing module and a second switch, the second processing module is in control connection with the second switch, the second switch is serially arranged in a power supply branch of the locking module, and the second processing module is used for controlling the second switch to be closed according to pull-out information of a handcart in the switch cabinet detected by a travel switch, a displacement switch or a position sensor.
6. The locking device for a switchgear panel actuator as claimed in claim 5, wherein the locking module comprises a housing, in which an electromagnet and a retractable mechanical latch are mounted, the electromagnet being connected in said supply branch, the retractable mechanical latch being adapted to extend out of the housing to lock the switchgear panel actuator when the electromagnet is energized.
7. A locking method of a switch cabinet valve driving device is characterized by comprising the following steps:
1) detecting the electrification condition of a primary power supply of a switch cabinet and the pulling-out condition of a handcart in the switch cabinet;
2) and when the primary power supply of the switch cabinet is electrified and the handcart in the switch cabinet is pulled out, the valve driving device of the switch cabinet is locked.
8. The utility model provides a switch cabinet, including valve drive arrangement, a serial communication port, still including the blocking device who controls this valve drive arrangement, this blocking device includes electrified detection module, spacing module and locking module, wherein, electrified detection module is used for detecting the electrified condition of switch cabinet primary power, spacing module is arranged in detecting the pull-out condition of handcart among the switch cabinet, the locking module is used for confirming whether to block switch cabinet valve drive arrangement according to electrified detection module and spacing module's testing result, when detecting that switch cabinet primary power is electrified and the handcart has pulled out among the switch cabinet, block switch cabinet valve drive arrangement.
9. The switchgear as claimed in claim 8, wherein the live detection module comprises:
the sensor is used for detecting a signal of a primary power supply of the switch cabinet;
and the first processing module is connected with the sensor and used for judging whether the primary power supply of the switch cabinet is electrified or not according to the signal of the primary power supply of the switch cabinet.
10. The switch cabinet according to claim 9, wherein the electrification detecting module further comprises a first switch, the first switch is connected in series in the power supply branch of the locking module, and the first switch is configured to be closed when the first processing module determines that the primary power supply of the switch cabinet is electrified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653828.5A CN110635382A (en) | 2018-06-22 | 2018-06-22 | Locking method and device for switch cabinet and valve driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653828.5A CN110635382A (en) | 2018-06-22 | 2018-06-22 | Locking method and device for switch cabinet and valve driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110635382A true CN110635382A (en) | 2019-12-31 |
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ID=68967148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810653828.5A Pending CN110635382A (en) | 2018-06-22 | 2018-06-22 | Locking method and device for switch cabinet and valve driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110635382A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202696026U (en) * | 2012-05-23 | 2013-01-23 | 江阴华明电气设备有限公司 | Earthing switch valve device of centrally installed switchgear |
| CN203859431U (en) * | 2014-05-19 | 2014-10-01 | 国家电网公司 | Misoperation-preventive locking device with electromagnetic lock for valve baffle plate of centrally-installed switchgear |
| CN206585260U (en) * | 2017-03-24 | 2017-10-24 | 国网甘肃省电力公司兰州供电公司 | A kind of valve mechanism locking system |
| CN206878365U (en) * | 2017-07-06 | 2018-01-12 | 管维明 | A kind of switch cubicle false-touch prevention blocking device |
-
2018
- 2018-06-22 CN CN201810653828.5A patent/CN110635382A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202696026U (en) * | 2012-05-23 | 2013-01-23 | 江阴华明电气设备有限公司 | Earthing switch valve device of centrally installed switchgear |
| CN203859431U (en) * | 2014-05-19 | 2014-10-01 | 国家电网公司 | Misoperation-preventive locking device with electromagnetic lock for valve baffle plate of centrally-installed switchgear |
| CN206585260U (en) * | 2017-03-24 | 2017-10-24 | 国网甘肃省电力公司兰州供电公司 | A kind of valve mechanism locking system |
| CN206878365U (en) * | 2017-07-06 | 2018-01-12 | 管维明 | A kind of switch cubicle false-touch prevention blocking device |
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Application publication date: 20191231 |
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| RJ01 | Rejection of invention patent application after publication |