CN110273587B - Anti-misoperation lockset of ring main unit grounding switch - Google Patents
Anti-misoperation lockset of ring main unit grounding switch Download PDFInfo
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- CN110273587B CN110273587B CN201910368282.3A CN201910368282A CN110273587B CN 110273587 B CN110273587 B CN 110273587B CN 201910368282 A CN201910368282 A CN 201910368282A CN 110273587 B CN110273587 B CN 110273587B
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- unlocking
- ring main
- locking device
- main unit
- power supply
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
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- Lock And Its Accessories (AREA)
Abstract
The invention discloses a false-proof lock for a ring main unit grounding switch, which comprises a locking device and an unlocking device, wherein the locking device is provided with a magnetic latching electromagnet, the magnetic latching electromagnet is driven by adopting a pulse type, a power supply for pulse type driving is arranged in the unlocking device, and the unlocking device is close to the magnetic latching electromagnet in the unlocking process; the locking device is also provided with an inductive capacitive sensor which is used for acquiring a three-phase high-voltage signal. The anti-error lock of the earthing switch of the ring main unit can ensure that the lock can be unlocked under the condition that the high-voltage end is free of electricity, so that the passive anti-error forced locking device is electrically locked and unlocked without electricity, namely, the function of electric test unlocking is realized, and the safety of operators is ensured.
Description
Technical Field
The invention relates to the technical field of high-voltage electrical equipment manufacturing, in particular to an anti-misoperation lockset of a ring main unit grounding switch.
Background
The earthing switch of the high-voltage ring main unit is an important device for ensuring the personal safety of equipment maintenance personnel. (1) When the electrical equipment is subjected to power failure maintenance, the grounding switch (or the grounding wire is hung) is required to be switched on for all directions in which power can be transmitted to the power failure equipment or induced voltage can be generated by the power failure equipment, so that the condition that power is suddenly transmitted accidentally by maintenance personnel when the power failure equipment (or a power failure working point) works is prevented, and the safety of the maintenance personnel is ensured. (2) Residual charges on the electrical equipment with the ring main unit disconnected can be discharged to the end by grounding through the grounding switch. The earthing switch of the high-voltage ring main unit is a mechanical earthing device which is used for ensuring the personal safety of equipment maintenance personnel and is used for earthing the high-voltage ring main unit. When electrical equipment has a power failure and overhauls, to probably transmitting power to each direction of power failure equipment or power failure equipment probably produce induced voltage all will close earthing switch (or hang the earth connection), this is in order to prevent that the maintainer from unexpected power transmission suddenly when power failure equipment (or power failure operating point) work, ensures the reliable safety measure of maintainer personal safety, and the surplus electric charge on the electrical equipment that the looped netowrk cabinet breaks off also can be closed by earthing switch and ground connection and the release is totally done. The grounding switch is not powered on when the power is switched on, the grounding switch is selected improperly, even some users do not install the grounding switch or remove the grounding switch without authorization (generally, the incoming line cabinet), the personal safety and the power utilization safety of maintainers can be seriously threatened, and serious liability accidents are caused. In this regard, the electric power industry standard DL408-91 "safety work for electric industry" is subject to strict regulations. However, in recent years, due to the structural difference between high-voltage ring main units manufactured by importing or introducing foreign advanced technologies and high-voltage ring main units which are developed and produced by our country according to the requirement of five prevention and old products in our country, when the high-voltage ring main units are overhauled, the operation procedures often conflict with the regulations, especially whether the grounding switch of the incoming line cabinet of the high-voltage ring main unit is arranged and how to adopt reliable, effective and simple error-proof measures are adopted, different understanding and requirements are provided for all power consumption departments and high-voltage ring main unit manufacturers, and conflicts and disputes are often generated in all links of system design, bidding and ordering, acceptance and power transmission, so that popularization and application of the novel intelligent anti-error lockset of the grounding switch of the ring main unit are of great significance to safe and reliable operation of an electric power system.
In recent years, due to the structural difference between high-voltage ring main units which are imported or manufactured by introducing foreign advanced technologies and high-voltage ring main units which are developed and manufactured by our country according to the requirement of five prevention and old products in our country, when the high-voltage ring main units are overhauled, the operation procedures often conflict with regulations, particularly whether the grounding switch of the incoming line cabinet of the high-voltage ring main unit is arranged and how to adopt reliable, effective and simple anti-error measures, all power consumption departments and high-voltage ring main unit manufacturing plants have different understanding and requirements, and often conflict and dispute are generated in all links of system design, bidding and ordering goods, acceptance and power transmission. In order to avoid such accidents, some power supply departments require that the grounding switch of the rear-stage high-voltage switch outgoing line cabinet is removed or permanently locked. However, once the earthing switch is removed or permanently locked, the mechanical interlock between the earthing switch and the cable compartment door is also released, otherwise the cable compartment door cannot be opened. However, when the mechanical interlock between the grounding switch and the cable chamber door is released, an operator can open the cable chamber door under the condition that the cable chamber is electrified, and the personal safety of the operator is seriously threatened.
Disclosure of Invention
The invention aims to overcome the defects that when related operators overhaul a ring main unit in the prior art, due to the defects in the design of an earthing switch, the operators can open the door of a cable chamber under the condition that the cable chamber is electrified, and the personal safety of the operators is seriously threatened, and provides an anti-misoperation lockset for the earthing switch of the ring main unit.
The purpose of the invention is realized by the following technical scheme:
a looped network cabinet grounding switch anti-misoperation lockset comprises a locking device and an unlocking device, wherein the locking device is provided with a magnetic latching electromagnet, the magnetic latching electromagnet is driven in a pulse mode, a power supply for pulse driving is arranged in the unlocking device, and the unlocking device is close to the magnetic latching electromagnet in the unlocking process; the locking device is also provided with an inductive capacitive sensor which is used for acquiring a three-phase high-voltage signal. The locking device is in a passive mode, the locking state is kept through the magnetic latching type electromagnet under the state of not unlocking, the capacitive sensor obtains a three-phase high-voltage signal, the signal is sent to the locking device through the shielding cable to serve as a criterion for judging whether to unlock or not, the passive anti-misoperation forced locking device cannot unlock as long as one-phase high-voltage end is electrified, and the locking device can unlock as long as the high-voltage end is not electrified. The process of unblanking is that unlocking device is close to the magnetism keeping formula electro-magnet of blocking device, makes magnetism keeping formula electro-magnet take place the action, and then makes the blocking device unblock, has realized that passive mistake preventing forces the blocking device to have electric shutting, electroless unblanking, tests the electric unblock function promptly.
As a preferable scheme, the locking device is provided with a lock hole, the unlocking device is an unlocking key, a spring-driven sliding mechanism is arranged in the lock hole, and the spring-driven sliding mechanism is connected with the unlocking key in a matching manner.
Preferably, a plexiglass cover is arranged outside the locking device. The organic glass cover increases the protection level.
Preferably, the capacity of the inductive capacitive sensor is 5PF-15 PF.
Preferably, the power supply is a 12VDC power supply. Due to the adoption of the low-power-consumption design, the service life of the interlocking device is greatly prolonged, and the developed interlocking device is suitable for a bus coupler cabinet and a ring main unit, so that the application range of the interlocking device is enlarged.
Preferably, the 12VDC power source is a button cell battery disposed in the latch.
As a preferred scheme, the anti-misoperation lockset of the ring main unit earthing switch further comprises a remote control terminal, the unlocking device is provided with a signal receiving device, a single chip microcomputer and a control device, the remote control terminal is connected with the signal receiving device through wireless, the signal receiving device is connected with the single chip microcomputer, the single chip microcomputer is connected with the control device, and the control device is used for controlling the unlocking device to be close to the locking device to switch on and off the control device and further used for controlling the power supply. The remote control terminal can send a control signal to control the unlocking device to carry out the unlocking process, so that an operator does not need to be close to the ring main unit, and the safety is further improved.
As a preferred scheme, the unlocking device is further provided with a Hall proximity sensor, and the Hall proximity sensor is connected with the single chip microcomputer. The Hall proximity sensor is used for judging the magnetic holding type.
As a preferred scheme, the unlocking device is further provided with a signal sending device, the signal sending device is connected with the single chip microcomputer, and the signal sending device is further connected with the remote control terminal in a wireless mode. The remote control terminal can receive the signal that unlocking device sent, and in case the unblanking fails, the remote control terminal can in time learn the information so that take corresponding measure.
The invention has the advantages that the anti-error lock of the ring main unit grounding switch can ensure that the ring main unit grounding switch can be unlocked only under the condition that the high-voltage end is electroless, so that the passive anti-error forced locking device has the functions of electric locking and electroless unlocking, namely, the function of electricity testing unlocking, and the safety of operators is ensured. The invention has simple structure and strong practicability.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Wherein: 1. the device comprises a locking device, 2, an unlocking device, 3, a remote control terminal, 4, a three-phase high-voltage signal, 11, a magnetic latching electromagnet, 12, an inductive capacitive sensor, 21, a power supply, 22, a signal receiving device, 23, a signal sending device, 24, a single chip microcomputer, 25, a control device, 26 and a Hall proximity sensor.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example (b): a looped netowrk cabinet earthing switch anti-misoperation lockset is shown in figure 1 and comprises a locking device 1 and an unlocking device 2, wherein the locking device is provided with a magnetic latching electromagnet 11 which is driven in a pulse mode, the unlocking device is internally provided with a power supply 21 for pulse driving, and the unlocking device is close to the magnetic latching electromagnet in the unlocking process; the locking device is also provided with an inductive capacitive sensor 12, and the inductive capacitive sensor is used for acquiring a three-phase high-voltage signal. The locking device is provided with a lock hole, the unlocking device is an unlocking key, a spring-driven sliding mechanism is arranged in the lock hole, and the spring-driven sliding mechanism is connected with the unlocking key in a matched mode. An organic glass cover is arranged outside the locking device. The capacity of the inductive capacitive sensor is 10 PF. The power supply is a 12VDC button cell disposed in the latch. The utility model provides a looped netowrk cabinet earthing switch prevents mistake tool to lock still includes remote control terminal 3, unlocking device on be equipped with signal receiving device 22, singlechip and controlling means, remote control terminal is connected with signal receiving device through wireless, signal receiving device is connected with the singlechip, singlechip 24 is connected with controlling means 25, controlling means is used for controlling unlocking device and is close to blocking device and cut controlling means still to be used for the break-make of control power. The unlocking device is also provided with a Hall proximity sensor 26 which is connected with the singlechip. The unlocking device is also provided with a signal sending device 23, the signal sending device is connected with the single chip microcomputer, and the signal sending device is also in wireless connection with the remote control terminal.
The locking device is in a passive mode, the locking state is kept through the magnetic latching type electromagnet under the state of not unlocking, the capacitive sensor obtains a three-phase high-voltage signal, the signal is sent to the locking device through the shielding cable to serve as a criterion for judging whether to unlock or not, the passive anti-misoperation forced locking device cannot unlock as long as one-phase high-voltage end is electrified, and the locking device can unlock as long as the high-voltage end is not electrified. The process of unblanking is that unlocking device is close to the magnetism keeping formula electro-magnet of blocking device, makes magnetism keeping formula electro-magnet take place the action, and then makes the blocking device unblock, has realized that passive mistake preventing forces the blocking device to have electric shutting, electroless unblanking, tests the electric unblock function promptly.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (5)
1. A looped network cabinet earthing switch anti-misoperation lockset is characterized by comprising a locking device and an unlocking device, wherein the locking device is provided with a magnetic latching electromagnet which is driven by a pulse type, the unlocking device is internally provided with a power supply for pulse type driving, and the unlocking device is close to the magnetic latching electromagnet in the unlocking process; the locking device is also provided with an inductive capacitive sensor which is used for acquiring a three-phase high-voltage signal;
the unlocking device is provided with a signal receiving device, a single chip microcomputer and a control device, the remote control terminal is connected with the signal receiving device through wireless, the signal receiving device is connected with the single chip microcomputer, the single chip microcomputer is connected with the control device, and the control device is used for controlling the unlocking device to be close to the locking device and switching the control device and controlling the power supply to be switched on and off;
the unlocking device is also provided with a Hall proximity sensor which is connected with the singlechip;
the locking device is provided with a lock hole, the unlocking device is an unlocking key, a spring-driven sliding mechanism is arranged in the lock hole, and the spring-driven sliding mechanism is in matched connection with the unlocking key;
the unlocking device is also provided with a signal sending device, the signal sending device is connected with the single chip microcomputer, and the signal sending device is also wirelessly connected with the remote control terminal;
the remote control terminal sends a control signal to control the unlocking device to carry out an unlocking process, the remote control terminal can receive the signal sent by the unlocking device, and once the unlocking fails, the remote control terminal can timely learn information.
2. The ring main unit earthing switch anti-misoperation lockset as claimed in claim 1, wherein the locking device is externally provided with an organic glass cover.
3. The ring main unit grounding switch anti-misoperation lockset as claimed in claim 1, wherein the capacity of the inductive capacitive sensor is 5-15 PF.
4. The ring main unit earthing switch anti-misoperation lockset as claimed in claim 1, wherein the power supply is a 12VDC power supply.
5. The ring main unit earthing switch anti-misoperation lockset as claimed in claim 4, wherein the 12VDC power supply is a button cell arranged in the locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910368282.3A CN110273587B (en) | 2019-05-05 | 2019-05-05 | Anti-misoperation lockset of ring main unit grounding switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910368282.3A CN110273587B (en) | 2019-05-05 | 2019-05-05 | Anti-misoperation lockset of ring main unit grounding switch |
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| CN110273587A CN110273587A (en) | 2019-09-24 |
| CN110273587B true CN110273587B (en) | 2021-10-22 |
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| CN201910368282.3A Active CN110273587B (en) | 2019-05-05 | 2019-05-05 | Anti-misoperation lockset of ring main unit grounding switch |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111091988A (en) * | 2019-12-20 | 2020-05-01 | 国网浙江海盐县供电有限公司 | Looped netowrk cabinet earthing switch maloperation blocking device that prevents |
| CN112814489A (en) * | 2021-02-03 | 2021-05-18 | 广东金力变速科技股份有限公司 | Hall linear device based electric lock anti-misoperation lock device, method and controller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6131423A (en) * | 1997-10-30 | 2000-10-17 | Asea Brown Boveri Ag | Safety door-locking system for switchgear cabinets |
| CN202059053U (en) * | 2011-05-10 | 2011-11-30 | 于宝成 | Safety protective lockset of high-voltage electrical switch cabinet |
| CN102881491A (en) * | 2011-07-12 | 2013-01-16 | 上海市电力公司 | Passive forcible locking device |
| CN206110865U (en) * | 2016-09-08 | 2017-04-19 | 深圳易通技术股份有限公司 | Electronic lock system |
| CN207925349U (en) * | 2018-03-24 | 2018-09-28 | 常州帕斯菲克自动化技术股份有限公司 | A kind of blocking device of the anti-hot line job of high-tension switch cabinet |
| CN208689639U (en) * | 2018-07-19 | 2019-04-02 | 珠海优特电力科技股份有限公司 | Tripper and lock system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453380A (en) * | 2014-12-02 | 2015-03-25 | 国家电网公司 | Handheld electronic unlocking key |
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2019
- 2019-05-05 CN CN201910368282.3A patent/CN110273587B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6131423A (en) * | 1997-10-30 | 2000-10-17 | Asea Brown Boveri Ag | Safety door-locking system for switchgear cabinets |
| CN202059053U (en) * | 2011-05-10 | 2011-11-30 | 于宝成 | Safety protective lockset of high-voltage electrical switch cabinet |
| CN102881491A (en) * | 2011-07-12 | 2013-01-16 | 上海市电力公司 | Passive forcible locking device |
| CN206110865U (en) * | 2016-09-08 | 2017-04-19 | 深圳易通技术股份有限公司 | Electronic lock system |
| CN207925349U (en) * | 2018-03-24 | 2018-09-28 | 常州帕斯菲克自动化技术股份有限公司 | A kind of blocking device of the anti-hot line job of high-tension switch cabinet |
| CN208689639U (en) * | 2018-07-19 | 2019-04-02 | 珠海优特电力科技股份有限公司 | Tripper and lock system |
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| CN110273587A (en) | 2019-09-24 |
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