CN110137008B - Prevent mistake and go into electrified spaced access control system - Google Patents
Prevent mistake and go into electrified spaced access control system Download PDFInfo
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- CN110137008B CN110137008B CN201910353174.9A CN201910353174A CN110137008B CN 110137008 B CN110137008 B CN 110137008B CN 201910353174 A CN201910353174 A CN 201910353174A CN 110137008 B CN110137008 B CN 110137008B
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- power supply
- prevention
- control system
- loop
- access
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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Abstract
The invention discloses an entrance guard system for preventing mistaken access to an electrified interval, which comprises an entrance and an exit door and a door lock, wherein the door lock comprises a mechanical door lock, an electromagnetic door lock and a control system; the control system comprises a direct-current control power supply, an access control power supply and a plurality of control loops, wherein the control loops comprise a short-circuit prevention locking and state removing loop, a five-prevention unlocking and electric locking loop and an access control removing loop; the short circuit prevention locking and state releasing loop is formed by connecting an electric coding lock with a short circuit prevention locking relay in series and is connected to a direct current control power supply; the entrance guard release loop comprises an electromagnetic door lock and is connected to an entrance guard power supply. The invention can effectively prevent the transformer substation operating personnel or constructors from forcibly entering the live equipment for interval work, thoroughly solves the defects of a five-prevention system, effectively prevents personal casualty accidents and ensures personal and equipment safety.
Description
Technical Field
The invention relates to the field of power grids, in particular to an entrance guard system for preventing mistaken access to an electrified interval.
Background
In the prior art, serious misoperation accidents of a power system, personal injuries and deaths caused by mistaken entering of electrified equipment intervals, equipment damage, system power failure accidents and the like account for a great proportion. The main factors causing the accidents are human factors and equipment factors, wherein firstly, the human safety consciousness is thin and the responsibility is not strong, and the operation process is not executed in place strictly according to the regulations to cause the accidents; and secondly, equipment factors that the safety identification of the equipment is not clear, the equipment has no reliable logic locking and no safety warning to cause accidents are caused. At present, a five-prevention system of each manufacturer of a transformer substation is widely applied, and seen from long-term operation conditions, the measures for preventing the transformer substation from entering the interval of live equipment by mistake are imperfect, field workers can easily unlock the transformer substation and randomly enter and exit the equipment to work at intervals, and the probability of personal electric shock is very high.
Disclosure of Invention
The invention aims to provide an entrance guard system for preventing a transformer substation from entering a live interval by mistake, which can effectively prevent transformer substation operators or constructors from entering live equipment to work at intervals, thoroughly overcomes the defects of a five-prevention system, effectively prevents personal casualty accidents from happening, and ensures the safety of human bodies and equipment.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
an entrance guard system for preventing mistaken access to electrified space comprises an entrance and an exit door and a door lock, wherein the door lock comprises a mechanical door lock, an electromagnetic door lock and a control system; the control system comprises a direct-current control power supply, an access control power supply and a plurality of control loops, wherein the control loops comprise a short-circuit prevention locking and state removing loop, a five-prevention unlocking and electric locking loop and an access control removing loop; the short circuit prevention locking and state releasing loop is formed by connecting an electric coding lock with a short circuit prevention locking relay in series and is connected to a direct current control power supply; the entrance guard release loop comprises an electromagnetic door lock and is connected to an entrance guard power supply.
Furthermore, the electric coded lock is a five-prevention electric coded lock for preventing the front side and the back side from short circuit operation, and comprises a rotating electrode and a fixed electrode which are arranged in a short circuit prevention box, a wiring terminal and a computer key matched with a lock body; the wiring terminal is provided with a plurality of mutually disconnected contacts through a plurality of copper wires in an extending mode, an insulation stroke push rod is connected among the contacts, and one end of the insulation stroke push rod is connected to the rotary electrode.
Furthermore, the contacts at least comprise three contacts which are respectively set as a normally open contact, a common contact and a normally closed contact, the common contact is arranged between the normally open contact and the normally closed contact, and each contact is respectively arranged on one copper wire.
Furthermore, one end of the rotating electrode is connected with a rotating shifting piece, the rotating shifting piece abuts against the end portion of the insulation stroke push rod, a plurality of copper conductor shifting pieces are arranged on the insulation stroke push rod, and the copper conductor shifting pieces are arranged above or below the copper conductors respectively.
Furthermore, the five-prevention unlocking and electric locking loop comprises a plurality of electric locking contacts, a five-prevention unlocking relay and a time-limiting relay, and the five-prevention unlocking relay and the time-limiting relay are connected in parallel and then connected in series to the electric locking contacts.
Furthermore, the five-prevention unlocking relay and the time-limiting relay are respectively connected with an electromagnetic response normally-open switch.
Furthermore, the direct current control power supply is also connected with an entrance guard release indicator lamp and a switch for controlling the indicator lamp to be switched on.
Furthermore, the direct current control power supply is connected with a direct current control power supply air switch.
Furthermore, the access control power supply is connected with an air switch of the access control power supply.
The invention has the beneficial effects that: the entrance guard system for preventing the mistaken access to the electrified space is different from the prior art, has double protection, one is a traditional mechanical door lock, the other is an electromagnetic door lock, and the door lock can enter the electrified equipment room only by double unlocking, so that the workers can be effectively prevented from entering and exiting at will, and the potential safety hazard is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an entrance guard system for preventing a user from entering an electrified space by mistake, provided by the invention;
FIG. 2 is a schematic circuit diagram of the door access system for preventing the entrance of an electric gap from being mistaken;
fig. 3 is a schematic structural diagram of an electric coded lock of the entrance guard system for preventing the entrance of an electric charge from being mistaken.
Fig. 4 is a schematic diagram of remote uploading of illegal unlocking information of the entrance guard system with the function of preventing the entrance of the illegal unlocking information into the live space.
Fig. 5 is a circuit structure diagram of a voice speaker of the entrance guard system for preventing the entrance of a mistake into a live space provided by the invention.
Reference numerals:
1-direct current control power supply, 2-direct current control power supply air switch 1DK, 3-electric coding lock, 4-short circuit prevention locking relay KM1, 5-five prevention unlocking relay KM2, 6-five prevention unlocking time limit relay SJ1, 11-door control power supply, 12-door control power supply air switch 2DK, 14-door control switch, 21-magnetic door lock, 22-door control device, 23-door control release indicator lamp and 24-door lock, 25-mechanical door lock, 26-voice horn, 27-wall, 34-electric coding lock body, 35-normally open contact, 36-common contact, 37-normally closed contact, 38-spring piece, 39-rotating electrode, 40-rotating plectrum, 41-insulation stroke push rod and 42-fixed electrode.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
1-5, an entrance guard system for preventing mistaken access to an electrified space comprises an entrance and an exit door and a door lock, wherein the door lock comprises a mechanical door lock 25, an electromagnetic door lock and a control system; the control system comprises a direct-current control power supply 1, an access control power supply 11 and a plurality of control loops, wherein the control loops comprise a short-circuit prevention locking and state removing loop, a five-prevention unlocking and electric locking loop and an access control removing loop; the short circuit prevention locking and state releasing loop is formed by connecting an electric coding lock 3 in series with a short circuit prevention locking relay and is connected to a direct current control power supply 1; the access control release loop comprises an electromagnetic door lock 24 and is connected to an access control power supply 11.
The five-prevention unlocking and electric locking loop comprises a plurality of electric locking contacts, a five-prevention unlocking relay and a time-limiting relay, and the five-prevention unlocking relay and the time-limiting relay are connected in parallel and then connected in series to the electric locking contacts.
And the five-prevention unlocking relay and the time-limited relay are respectively connected with an electromagnetic response normally-open switch.
The direct current control power supply 1 is also connected with an entrance guard release indicator lamp 23 and a switch for controlling the indicator lamp to be switched on. The air switch of the direct current control power supply 1 is connected to the direct current control power supply 1. The access control power supply 11 is connected with an air switch of the access control power supply 11.
The electric coded lock 3 is a five-prevention electric coded lock for preventing the front side and the back side from short circuit operation, and comprises a rotating electrode 39 and a fixed electrode 42 which are arranged in a short circuit prevention box, a connecting terminal and a computer key matched with a lock body; the wiring terminal is provided with a plurality of mutually disconnected contacts through a plurality of copper wires in an extending manner, an insulation stroke push rod 41 is connected among the contacts, and one end of the insulation stroke push rod 41 is connected to the rotating electrode 39.
The rotating electrode 39 is fixedly supported by a rotatable electrode 39 seat and a bearing and is arranged in the electric coding lock body 34, can flexibly rotate for 360 degrees and has electric conductivity, and the rotating angle of the rotatable plectrum 40 can be arbitrarily adjusted and installed at the tail end of the rotatable electrode 39 according to the angle requirement and is fixed by a fixing nut. When the computer key is inserted into the electric code lock body 34 and presses an unlocking button, the unlocking operating rod rotates 90 degrees clockwise, and simultaneously the rotatable plectrum 40 also rotates 90 degrees to stir the insulation stroke push rod 41 to move upwards, so that the common contact 36 is opened to the normally closed contact 37 and is closed to the normally open contact 35 to achieve the purpose of unlocking control of an electric circuit. The fixed electrode 42 is fixedly supported by the fixed electrode 42 seat and is arranged inside the electric code lock body 34, and the fixed electrode is non-rotatable and conductive and is used for reliably positioning, guiding and fixedly supporting a fixed bolt of a computer key. When the computer key unlocking button is released, the unlocking operating rod drives the rotatable shifting piece 40 to rotate 90 degrees anticlockwise, and the auxiliary contact and the insulation stroke push rod 41 automatically return to the initial state under the action of the spring piece 38.
The contacts at least comprise three contacts which are respectively set as a normally open contact 35, a common contact 36 and a normally closed contact 37, the common contact 36 is arranged between the normally open contact 35 and the normally closed contact 37, and each contact is respectively arranged on one copper wire. One end of the rotatable electrode 39 rod is connected with a rotating shifting piece 40, the rotating shifting piece 40 abuts against the end part of an insulation stroke push rod 41, a plurality of copper conductor shifting pieces are arranged on the insulation stroke push rod 41, and the copper conductor shifting pieces are respectively arranged above or below the copper conductors.
Specifically, the contacts are preferably three, and are respectively provided as a normally open contact 35, a common contact 36, and a normally closed contact 37, the common contact 36 is provided between the normally open contact 35 and the normally closed contact 37, and each contact is provided on one copper wire. At this time, the copper wire paddles are disposed below the normally open contact 35, above the normally closed contact 37 and the common contact 36, respectively. The rotary paddle 40 drives the insulation stroke rod to move up or down during the rotation of the electrode rod, while the copper wire paddle pulls the copper wire up or down and controls the contact or separation between the plurality of contacts. In the process, when the insulation stroke rod moves upwards, the copper wire shifting piece of the common contact 36 is driven to move upwards until the copper wire of the normally closed contact 37 is abutted, and the copper wire is moved upwards, the normally closed contact 37 and the common contact 36 can not be contacted in the process, and the normally open contact 35 moves upwards to be in series contact with the common contact 36. Conversely, when the insulating stroke rod moves down, the normally closed contact 37 is driven to be connected with the common contact 36 in series. The multiconductor sets up separately, and closes a plurality of auxiliary contacts and installs and manage in preventing the short circuit box.
When the door access control device is used specifically, according to the figures 1 and 2, the direct-current control power supply 1, the direct-current control power supply air switch 1DK (2), the electric coded lock 3, the short-circuit prevention locking relay KM1(4), the five-prevention unlocking relay KM2(5), the five-prevention unlocking time limit relay SJ1(6), the door access power supply 11, the door access control power supply air switch 2DK and the voice horn are all arranged in the door access control device 22 to be closed and managed, and the door access control device 22 is fixedly installed on the wall 27.
The mechanical door lock 25 is unlocked, a computer key is inserted into the electric coded lock 3, the mechanical code of the electric coded lock 3 is identified through the computer key, a computer key unlocking button is pressed, a normally closed contact SQ1-1 of the computer key unlocking button is disconnected to prevent short circuit locking and a state releasing loop, a normally open contact SQ1-2 is closed to connect a five-prevention unlocking and electric locking loop, a five-prevention unlocking relay KM2(5) is excited to act, a normally open contact KM2-1 is closed to be self-maintained, a normally open contact KM2-3 is closed to light an entrance guard releasing indicator lamp 23, an on-site working personnel is prompted by a voice horn 26 to be connected to ensure that the on-site working personnel is correctly unlocked and! The quantity of closed hard contacts of the normally open contact KM2-5 is sent to a public measurement and control device, and a preset message' a certain device is unlocked and opened at five-prevention logic intervals! Normally closed contact KM2-4 breaks an entrance guard release loop, an entrance guard magnetic door lock 21 loses magnetism, an equipment compartment door is opened, and field personnel can safely enter the equipment compartment.
When an illegal person short-circuits the rotating electrode and the fixed electrode of the electric coded lock 3 by using a conductor, the short-circuit prevention locking relay KM1(4) of the short-circuit prevention locking loop is triggered instantly and performs excitation action, the normally open contact KM1-1 is closed and self-held, the normally closed contact KM1-2 is opened, the five-prevention unlocking and electric locking loop and the normally open contact KM1-3 are closed and hard contact quantity are sent to a public measurement and control device, and a preset message' a certain device opens a door at intervals forcibly! 'remote prompting the on-duty dispatcher for illegal unlocking action on site, switching on the voice loudspeaker 26 for voice prompting' illegal unlocking, operation is forbidden! ' to warn the illegal personnel on site, all unlocking operations are prohibited permanently under the state, the illegal unlocking personnel behavior is controlled powerfully, and the interval of mistakenly entering the live equipment is effectively prevented. If the illegal unlocking state is released, the manager opens the door lock 24 of the door access control device 22 with a key and opens the door, and the dc control power supply air switch 1DK (2) in the device is powered off, and after all the functional circuits are returned, the dc control power supply air switch 1DK (2) is closed again.
Under the condition of any component fault in the access control device 22, a manager can open the door lock 24 by using a key, and the door of the access control device is opened to disconnect the direct-current control power supply air switch 1DK (2) and the access control power supply air switch 2DK (12) for isolation without influencing any operation, namely, the original state of the locking of the access control system which is not mistakenly inserted into an electrified interval is recovered. Under the on-the-spot special circumstances, what the long-time entrance guard of needs removed, it can remove the entrance guard only to need the one key for the convenience to set up 14 managers of entrance guard switch.
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 protection scope of the present invention.
Claims (7)
1. The utility model provides an prevent mistake and go into electrified spaced access control system, is including going out to go into and door and lock, its characterized in that: the door lock comprises a mechanical door lock, an electromagnetic door lock and a control system; the control system comprises a direct-current control power supply, an access control power supply and a plurality of control loops, wherein the control loops comprise a short-circuit prevention locking and state removing loop, a five-prevention unlocking and electric locking loop and an access control removing loop; the short circuit prevention locking and state releasing loop is formed by connecting an electric coding lock with a short circuit prevention locking relay in series and is connected to a direct current control power supply; the entrance guard release loop comprises an electromagnetic door lock and is connected to an entrance guard power supply;
the electric coded lock is a five-prevention electric coded lock for preventing the front side and the back side from short circuit operation, and comprises a rotating electrode and a fixed electrode which are arranged in a short circuit prevention box, a wiring terminal and a computer key matched with a lock body; the wiring terminal is provided with a plurality of mutually disconnected contacts through a plurality of copper wires in an extending manner, an insulation stroke push rod is connected among the contacts, and one end of the insulation stroke push rod is connected to the rotary electrode;
the five-prevention unlocking and electric locking loop comprises a plurality of electric locking contacts, a five-prevention unlocking relay and a time-limiting relay, and the five-prevention unlocking relay and the time-limiting relay are connected in parallel and then connected in series to the electric locking contacts.
2. The door control system preventing mistaken access to electrified space according to claim 1, characterized in that: the contact includes three at least, sets up to normally open contact, public contact, normally closed contact respectively, and public contact sets up between normally open contact and normally closed contact, and every contact sets up respectively on a copper wire.
3. The door control system preventing mistaken access to electrified space according to claim 1, characterized in that: one end of the rotating electrode is connected with a rotating shifting piece which abuts against the end part of the insulation stroke push rod, a plurality of copper conductor shifting pieces are arranged on the insulation stroke push rod, and the copper conductor shifting pieces are respectively arranged above or below the copper conductors.
4. The door control system preventing mistaken access to electrified space according to claim 1, characterized in that: and the five-prevention unlocking relay and the time-limited relay are respectively connected with an electromagnetic response normally-open switch.
5. The door control system preventing mistaken access to electrified space according to claim 1, characterized in that: the direct current control power supply is also connected with an entrance guard release indicating lamp and a switch for controlling the switch-on of the indicating lamp.
6. The door control system preventing mistaken access to electrified space according to claim 1, characterized in that: and the direct-current control power supply is connected with a direct-current control power supply air switch.
7. The door control system preventing mistaken access to electrified space according to claim 1, characterized in that: the access control power supply is connected with an air switch of the access control power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353174.9A CN110137008B (en) | 2019-04-29 | 2019-04-29 | Prevent mistake and go into electrified spaced access control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353174.9A CN110137008B (en) | 2019-04-29 | 2019-04-29 | Prevent mistake and go into electrified spaced access control system |
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| Publication Number | Publication Date |
|---|---|
| CN110137008A CN110137008A (en) | 2019-08-16 |
| CN110137008B true CN110137008B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910353174.9A Active CN110137008B (en) | 2019-04-29 | 2019-04-29 | Prevent mistake and go into electrified spaced access control system |
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| CN (1) | CN110137008B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096366B (en) * | 2021-03-25 | 2022-10-14 | 国网河北省电力有限公司沧州供电分公司 | Electrified interval false-entry-prevention method and device and terminal equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045414U (en) * | 1989-04-27 | 1989-10-04 | 邮电部设计院 | Electronic code door lock |
| JPH11265629A (en) * | 1998-03-17 | 1999-09-28 | Hitachi Telecom Technol Ltd | Switch board structure |
| CN203787791U (en) * | 2013-12-11 | 2014-08-20 | 广东天能电力设计有限公司 | Ring main unit high-voltage live display block system with forced block function |
| CN107680212A (en) * | 2017-09-25 | 2018-02-09 | 国网江苏省电力公司常州供电公司 | A kind of anti-smart lock authority checking method of power distribution network outdoor equipment five |
| CN210316902U (en) * | 2019-04-29 | 2020-04-14 | 贵州电网有限责任公司 | Entrance guard system for preventing mistakenly entering electrified interval |
-
2019
- 2019-04-29 CN CN201910353174.9A patent/CN110137008B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045414U (en) * | 1989-04-27 | 1989-10-04 | 邮电部设计院 | Electronic code door lock |
| JPH11265629A (en) * | 1998-03-17 | 1999-09-28 | Hitachi Telecom Technol Ltd | Switch board structure |
| CN203787791U (en) * | 2013-12-11 | 2014-08-20 | 广东天能电力设计有限公司 | Ring main unit high-voltage live display block system with forced block function |
| CN107680212A (en) * | 2017-09-25 | 2018-02-09 | 国网江苏省电力公司常州供电公司 | A kind of anti-smart lock authority checking method of power distribution network outdoor equipment five |
| CN210316902U (en) * | 2019-04-29 | 2020-04-14 | 贵州电网有限责任公司 | Entrance guard system for preventing mistakenly entering electrified interval |
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| CN110137008A (en) | 2019-08-16 |
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