CN118380283A - Electromagnetic mechanical interlocking device for dual power supply control - Google Patents
Electromagnetic mechanical interlocking device for dual power supply control Download PDFInfo
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- CN118380283A CN118380283A CN202410824460.XA CN202410824460A CN118380283A CN 118380283 A CN118380283 A CN 118380283A CN 202410824460 A CN202410824460 A CN 202410824460A CN 118380283 A CN118380283 A CN 118380283A
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- interlocking
- power supply
- locking
- circuit breaker
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- 230000009977 dual effect Effects 0.000 title claims description 14
- 230000001360 synchronised effect Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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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
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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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
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The application relates to an electromagnetic mechanical interlocking device for double power supply control, which comprises a main power supply circuit breaker, a standby power supply circuit breaker and a cabinet body, wherein the electromagnetic mechanical interlocking device comprises a supporting device, a main interlocking plate, a standby power supply locking device and a main power supply locking device, a locking head on the main interlocking plate can only be buckled with one locking clamping groove in a strong mechanical interlocking mode, the other locking clamping groove deflects after buckling, only one circuit breaker can be switched on and electrified, the other circuit breaker cannot be operated under the condition that one circuit breaker is electrified, and the interlocking between the circuit breakers of two high-voltage power supplies is enhanced through mechanical interlocking, so that the safety of a circuit and an operator is ensured; the locking head is buckled with the locking clamping groove on the standby power supply through the elastic connecting piece, so that the standby power supply button interlocking rod is abutted against the standby closing synchronous plate, the standby power supply closing knob cannot rotate, and the standby power supply circuit breaker cannot be closed and communicated.
Description
Technical Field
The application relates to the field of switch cabinets, in particular to an electromagnetic mechanical interlocking device for dual power supply control.
Background
With the wide application of the ring main unit in the power system, people put forward new technical requirements on the ring main unit industry technology, and mainly aiming at the higher and higher power supply requirements in the power supply system, wherein the dual-power supply is particularly important, the interlocking function of the dual-power load switch cabinet of the original ring main unit is not perfect, and two single plastic shell breakers only manually perform dual-loop switching, do not have mechanical realization of interlocking, and are easy to cause safety accidents by misoperation.
The double-power supply switching interlocking mechanism is an interlocking device which is necessary to be equipped for the high-voltage switch cabinet, and aims to prevent misoperation and ensure that only one of the two circuit breakers is closed; therefore, the reliability of the dual-power switching interlocking mechanism is directly related to whether the power supply system can work normally, and the existing interlocking device mainly uses a connecting rod or a lever to control the switching-on or switching-off of a power supply through a specific mechanical transmission device, and the existing interlocking mode has the problems of complex structure, complex operation procedure and the like, and has poor reliability.
In order to continuously supply power to a power distribution system and the reliability of the power supply, a novel double-power electromagnetic mechanical interlocking device is designed, so that two paths of power supplies are switched for power supply, the probability of power failure of electric equipment is greatly reduced, and the double-power interlocking device also has the function of preventing double power supplies from being mistakenly juxtaposed and reversely powered.
Disclosure of Invention
Based on the above, it is necessary to provide an electromagnetic mechanical interlocking device for dual-power control to overcome the defect of the conventional dual-power switching interlocking mechanism, so that two paths of power supplies are switched for power supply, the probability of power failure of electric equipment is greatly reduced, and the dual-power interlocking device also has the function of preventing the dual-power supply from being misplaced and reversely powered.
The application provides an electromagnetic mechanical interlocking device for double power supply control, which comprises a main power supply breaker, a standby power supply breaker and a cabinet body, wherein the electromagnetic mechanical interlocking device comprises:
The support device is arranged on the cabinet body and comprises a support frame and two mounting seats, each mounting seat is respectively arranged above the main power circuit breaker and the standby power circuit breaker, the two mounting seats are respectively provided with a circuit breaker main shaft, and the circuit breaker main shafts are provided with locking clamping grooves;
the main interlocking plate is provided with locking heads at two ends for being matched with the locking clamping grooves, and the main interlocking plate is buckled on the supporting frame in a sliding manner;
The standby power supply locking device comprises an elastic connecting piece, wherein one end of the elastic connecting piece is fixed on a cabinet body close to the standby power supply circuit breaker, and the other end of the elastic connecting piece is fixed on the main interlocking plate;
The main power supply locking device comprises an electric telescopic device and a connecting buckle, one end of the connecting buckle is connected to the main interlocking plate, the other end of the connecting buckle is in telescopic linkage by the electric telescopic device, and the tension direction of the electric telescopic device is opposite to the elastic direction of the elastic connecting piece.
Preferably, the main shaft of the circuit breaker is in running fit with the mounting seat, the main shaft of the circuit breaker comprises a locking chassis and a rotating shaft, and the locking chassis is sleeved on the rotating shaft and rotates synchronously with the rotating shaft.
Preferably, the end part of the rotating shaft is connected with a rotating connecting piece, the rotating connecting piece is connected with an energy storage spring, and the rotating connecting piece drives the rotating shaft to rotate.
Preferably, in the main shaft of the circuit breaker with two installation seats, each locking clamping groove is arranged on the locking chassis, when one locking clamping groove is buckled with the locking head, the circuit breaker with the locking clamping groove is in a brake-separating locking state, and the other circuit breaker is freely switched on or off.
Preferably, the two locking clamping grooves are arc-shaped grooves, and the end parts of the locking heads are circular plates corresponding to the arc-shaped grooves.
Preferably, the main interlocking plate is made of a plurality of layers of steel plates, a plurality of limiting grooves are formed in the main interlocking plate, fixing screws are arranged in the limiting grooves, and the fixing screws are in threaded connection with the cabinet body.
Preferably, the main power circuit breaker is provided with a main power switching-on knob and a main switching-on shaft, and the end part of the main switching-on shaft is provided with a main switching-on synchronous plate;
the standby power supply circuit breaker is internally provided with a standby power supply closing knob and a standby closing shaft, and the end part of the standby closing shaft is provided with a standby closing synchronous plate.
Preferably, the main interlocking plate is further provided with an auxiliary interlocking plate, the auxiliary interlocking plate comprises an auxiliary interlocking main plate and a plurality of interlocking rods, one end of each interlocking rod is connected with the main interlocking plate, and the other end of each interlocking rod is connected with the auxiliary interlocking main plate.
Preferably, both sides of the auxiliary interlocking main board are respectively provided with a main power button interlocking rod and a standby power button interlocking rod, when one locking head in the main interlocking board is buckled in a locking clamping groove above the standby power circuit breaker, the standby power button interlocking rod is abutted against the standby closing synchronous board, so that the standby power closing knob cannot rotate; when one locking head in the main interlocking plate is buckled in a locking clamping groove above the main power circuit breaker, the main power button interlocking rod is abutted against the main closing synchronous plate, so that the main power closing knob cannot rotate.
Preferably, the elastic connecting piece is a spring, the electric telescopic device is an electromagnetic switch or an electric telescopic rod, the electric telescopic device is positioned between the main interlocking plate and the auxiliary interlocking plate, and the connecting buckle is fixed on one of the interlocking rods.
The application has the technical advantages that:
1. Firstly, a dual-power distribution system is directly buckled on a main shaft of a circuit breaker in a strong mechanical interlocking mode, and the rotation angle of a locking clamping groove is adjusted, so that a locking head on a main interlocking plate can only be buckled with one locking clamping groove, and the other locking head can not be matched with the other locking clamping groove, so that a circuit breaker which is not locked can be normally powered on or powered off, and the other circuit breaker which is locked can not complete the switching-on operation, and the circuit breaker which is always in a switching-off state can strengthen the interlocking between the two circuit breakers of the high-voltage power supply through the mechanical interlocking, thereby ensuring the safety of a circuit and operators;
2. Under the conventional state, the locking head is buckled with the locking clamping groove on the standby power supply through the elastic connecting piece, and at the moment, the main shaft of the circuit breaker of the standby power supply cannot rotate to be closed, so that the interlocking rod of the standby power supply button is abutted on the standby closing synchronous plate, the closing knob of the standby power supply cannot rotate, the circuit breaker of the standby power supply cannot be closed and communicated, the double interlocking ensures that the circuit breaker cannot be closed physically, and the closing button cannot be operated manually;
3. When the main power supply is insufficient, the circuit breaker of the main power supply is firstly adjusted to enter a switching-off state, at the moment, the locking clamping groove on the main shaft of the circuit breaker of the main power supply is aligned with the locking head, the locking clamping groove on one side of the standby power supply is separated from the corresponding locking head, the locking state of the main shaft of the circuit breaker of the standby power supply is released, the electric telescopic device is started again, the whole main interlocking plate is pulled, the locking clamping groove on the main shaft of the circuit breaker of the main power supply is matched with the locking head, the main shaft of the circuit breaker of the main power supply is locked, the main power supply button interlocking rod 311 is abutted against the main switching-on synchronous plate, so that the main power supply switching-on knob cannot be operated, an operator cannot rotate the main power supply switching-on knob, the main power supply cannot be switched on, double locking can prevent double power supply error juxtaposition, and safety during switching and maintenance is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application.
FIG. 1 is a schematic diagram illustrating an electromagnetic interlocking apparatus according to an embodiment of the present application;
FIG. 2 is a perspective view of an electromagnetic mechanical interlock according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a standby power locked state according to an embodiment of the present application;
FIG. 4 is a schematic view of the structure of a main interlocking plate and an auxiliary interlocking plate according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a main power lock state according to an embodiment of the present application;
fig. 6 is a schematic diagram of a main shaft structure of a circuit breaker according to an embodiment of the present application;
Reference numerals: a main power circuit breaker 100; a main power supply closing knob 101; a main closing shaft 102; a main closing synchronization plate 103; a standby power circuit breaker 200; a standby power switch-on knob 201; a standby brake-on shaft 202; a standby closing synchronization plate 203; a cabinet 300;
A support device 1; a support frame 11; a mounting base 12; a breaker spindle 13; a locking chassis 131; a rotation shaft 132; a rotary connector 133; a locking slot 130; a main interlock plate 2; a limit groove 20; a locking head 21; a set screw 22; an auxiliary interlocking plate 3; an auxiliary interlock main board 31; a main power button interlock lever 311; a standby power button interlock lever 312; a link lever 32; a standby power supply locking device 4; an elastic connection member 41; a main power supply locking device 5; an electric telescopic device 51; and a connector link 52.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 6, the application provides an electromagnetic mechanical interlocking device for dual power supply control, which is used for interlocking between circuit breakers of two high-voltage power supplies, so that only one of the circuit breakers can be switched on and electrified, and under the condition that one circuit breaker is electrified, the other circuit breaker cannot be operated, and the safety of a circuit and an operator is ensured.
The vacuum arc-extinguishing chamber of the circuit breaker main shaft and the switch cabinet are in linkage, the conventional switch cabinet stores energy through a spring, and rotates the circuit breaker main shaft, so that a copper pipe in the vacuum arc-extinguishing chamber moves up and down to realize the on-off of the circuit breaker, and therefore, the main control object of the design is the circuit breaker main shaft.
As shown in fig. 1: an electromagnetic mechanical interlocking device for double power supply control is used for two double power supply systems which are arranged in parallel, wherein one on the right side is a main power supply, the other on the left side is a standby power supply, the electromagnetic mechanical interlocking device is arranged between a breaker main shaft of the main power supply breaker 100 and a breaker main shaft of the standby power supply breaker 200, the whole device is fixed on a cabinet 300, and an interlocking function is formed between the two breaker main shafts through movement and locking of a mechanical structure.
As shown in fig. 1-2, the electromagnetic mechanical interlocking device according to the present invention includes a support device 1, a main interlocking plate 2, an auxiliary interlocking plate 3, a standby power supply locking device 4, and a main power supply locking device 5.
Specifically, the supporting device 1 includes a supporting frame 11 and two mounting seats 12, the supporting frame 11 is integrally made of cross supporting steel, and is mainly used for fixing the main power supply locking device 5 and limiting the movement of the main interlocking plate 2, the two mounting seats 12 are respectively arranged above the main power supply circuit breaker 100 and the standby power supply circuit breaker 200, the centers of the two mounting seats 12 are all provided with circuit breaker spindles 13, and each circuit breaker spindle 13 is provided with a locking clamping groove 130, and the locking clamping grooves 130 are used for being clamped with the main interlocking plate 2.
The most important structure of the invention is a main interlocking plate 2, two ends of the main interlocking plate 2 are provided with locking heads 21 which are matched with locking clamping grooves 130, the main interlocking plate 2 is buckled on a supporting frame 11 in a sliding way, the supporting frame 11 is provided with grooves, and part of the main interlocking plate 2 is positioned in the grooves, so that the main interlocking plate 2 can be limited to move only in the left-right direction.
The main interlocking plate 2 is made of a plurality of layers of steel plates, four limiting grooves 20 are formed in the main interlocking plate 2, fixing screws 22 are arranged in each limiting groove 20, and the fixing screws 22 are connected to the cabinet 300 in a threaded mode.
The circuit breaker main shaft 13 and the mounting seat 12 are in running fit, the circuit breaker main shaft 13 comprises a locking chassis 131 and a rotating shaft 132, the locking chassis 131 is sleeved on the rotating shaft 132 and synchronously rotates with the rotating shaft 132, the end part of the rotating shaft 132 is connected with a rotating connecting piece 133, the rotating connecting piece 133 is connected with an energy storage spring, and the rotating connecting piece 133 drives the rotating shaft 132 to rotate.
The rotating connecting piece 133 is connected with the energy storage spring of the corresponding breaker, when the two breakers are in the opening state, the locking clamping grooves 130 of the two breaker main shafts 13 and the two locking heads 21 are all on the same horizontal line, the locking heads 21 can be pulled by the elastic force of the standby power locking device 4 at the moment to lock the locking clamping grooves 130 above the standby power breaker 200, so that the breaker main shafts 13 of the standby power breaker 200 cannot rotate and cannot be closed and electrified, and the main power breaker 100 can normally close and open.
When one of the locking detents 130 rotates downward, it indicates that the circuit breaker spindle 13 has been closed and the circuit is in communication.
In each of the breaker spindles 13, each of the locking clamping grooves 130 is provided on the locking chassis 131, and in the breaker spindles 13 of the two mounting seats 12, each of the locking clamping grooves 130 is provided on the locking chassis 131, when one of the locking clamping grooves 130 is engaged with the locking head 21, the breaker in which the locking clamping groove 130 is located is in a breaking locking state, and the other breaker is free to be closed or broken.
Both locking grooves 130 are arc grooves, and the end of the locking head 21 is shaped as a circular plate corresponding to the arc groove.
As shown in fig. 3-6: the main interlocking plate 2 is further provided with an auxiliary interlocking plate 3 which moves synchronously, the auxiliary interlocking plate 3 comprises an auxiliary interlocking main plate 31 and two interlocking rods 32, one end of each interlocking rod 32 is connected with the main interlocking plate 2, and the other end of each interlocking rod 32 is connected with the auxiliary interlocking main plate 31.
The main power circuit breaker 100 is provided with a main power switching-on knob 101 and a main switching-on shaft 102, and the end part of the main switching-on shaft 102 is provided with a main switching-on synchronous plate 103; a standby power switch-on knob 201 and a standby switch-on shaft 202 are provided in the standby power circuit breaker 200, and a standby switch-on synchronizing plate 203 is provided at an end of the standby switch-on shaft 202. The main power supply closing knob 101 rotates to control the main power supply breaker 100 to be closed and electrified, the standby power supply closing knob 201 rotates to control the standby power supply breaker 200 to be closed and electrified, and only one of the two breakers can be electrified normally to supply power to a user, if the two breakers are communicated simultaneously, the two breakers are extremely dangerous, and therefore, the manual input buttons on the main shaft of the locked breaker are synchronously blocked through the auxiliary interlocking plate 3, so that an operator cannot conduct closing and electrifying on the power supply in a locked state, and a protection measure is added.
Specifically, the two sides of the auxiliary interlocking main board 31 are respectively provided with a main power button interlocking rod 311 and a standby power button interlocking rod 312, when one locking head 21 in the main interlocking board 2 is buckled in the locking slot 130 above the standby power circuit breaker 200, the standby power button interlocking rod 312 abuts against the standby closing synchronous board 203, so that the standby power closing knob 201 cannot rotate; when one of the locking heads 21 of the main interlocking plate 2 is buckled in the locking clamping groove 130 above the main power circuit breaker 100, the main power button interlocking lever 311 abuts against the main closing synchronization plate 103, so that the main power closing knob 101 cannot rotate.
The standby power locking device 4 and the main power locking device 5 control the left and right movement of the main interlock plate 2 so that the main interlock plate 2 locks the main power circuit breaker 100 or the standby power circuit breaker 200.
The standby power locking device 4 comprises an elastic connecting piece 41, one end of the elastic connecting piece 41 is fixed on the cabinet 300 close to the standby power circuit breaker 200, and the other end of the elastic connecting piece 41 is fixed on the main interlocking plate 2; the elastic connecting piece 41 is a spring, one end of the spring is fixed on one screw of the main interlocking plate 2, the other end of the spring is fixed on one connecting column of the cabinet 300, the spring is in a stretching state, and the main interlocking plate 2 is pulled towards the locking clamping groove 130 above the standby power circuit breaker 200 all the time, so that the standby power circuit breaker 200 is in a locking state all the time.
The main power supply locking device 5 comprises an electric telescopic device 51 and a connecting buckle 52, one end of the connecting buckle 52 is connected to the main interlocking plate 2, the other end of the connecting buckle 52 is in telescopic linkage by the electric telescopic device 51, the tension direction of the electric telescopic device 51 is opposite to the elastic force direction of the elastic connecting piece 41, and the tension of the electric telescopic device 51 is larger than the elastic force of the elastic connecting piece 41.
The electric telescopic device 51 adopts an electromagnetic switch, the electromagnetic switch is positioned between the main interlocking plate 2 and the auxiliary interlocking plate 3, the connecting buckle 52 is fixed on one of the interlocking rods 32, the lower end of the electromagnetic switch is fixed on the supporting frame 11 through a connecting plate, the tension provided by the electromagnetic switch is larger than the elasticity of a spring, when the main power supply fails, after stopping supplying power, the main power supply circuit breaker 100 is firstly switched off, a power supply circuit is disconnected, then the electromagnetic switch is started, the main interlocking plate 2 is pulled towards the locking clamping groove 130 above the main power supply circuit breaker 100, the main power supply closing knob 101 of the main power supply circuit breaker 100 is locked, the unlocking standby power supply circuit breaker 200 is unlocked, the standby power supply closing knob 201 can rotate, and the closing and electrifying of the standby power supply circuit breaker 200 are controlled.
The present embodiment provides an electromagnetic mechanical interlocking device for dual power control, which has the following technical features except the technical scheme of the above embodiment, the electric telescopic device 51 may also use an electric telescopic rod, one end of the telescopic rod is connected to the connecting buckle 52, after being electrified, the telescopic rod is retracted, the main interlocking plate 2 will be pulled towards the locking clamping groove 130 above the main power circuit breaker 100, after being buckled, the main power circuit breaker shaft 13 and the main power closing knob 101 of the main power circuit breaker 100 are locked, the standby power circuit breaker 200 is unlocked, the main power circuit breaker shaft 13 and the standby power closing knob 201 of the standby power circuit breaker 200 can rotate, and the standby power circuit breaker 200 is closed.
Referring to fig. 3-6, the operation principle and process of the mechanical interlocking device for the ring main unit dual power supply load switch cabinet power supply of the present invention in various states will be described:
When the two circuit breakers are in the opening state, the locking clamping grooves 130 of the two circuit breaker main shafts 13 and the two locking heads 21 are on the same horizontal line, and the locking heads 21 are pulled by the elastic force of the standby power supply locking device 4 at the moment to lock the locking clamping grooves 130 above the standby power supply circuit breakers 200, so that the circuit breaker main shafts 13 of the standby power supply circuit breakers 200 cannot rotate and cannot be closed and electrified, and the main power supply circuit breakers 100 can normally close and open,
As shown in fig. 3: in order to lock the standby power circuit breaker 200, the elastic connector 41 locks the locking head 21 and the locking slot 130 above the standby power circuit breaker 200, the main shaft 13 of the standby power circuit breaker 200 cannot rotate, and the standby power button interlock lever 312 abuts against the standby closing synchronization plate 203, so that the standby power closing knob 201 cannot rotate, and the standby power circuit breaker 200 cannot be closed and communicated.
As shown in fig. 5: when the main power supply fails, the standby power supply needs to be started, at this time, the main power supply circuit 100 needs to be locked, the opening button of the main power supply circuit 100 is pressed first, the main shaft 13 of the circuit breaker on the main power supply circuit 100 rotates, the locking slot 130 and the locking head 21 are positioned on the same horizontal line, the electromagnetic switch 51 is started again, the whole main interlocking plate 2 is pulled, the locking slot 130 and the locking head 21 on the main power supply circuit 100 are buckled, the main shaft 13 of the main power supply circuit 100 cannot rotate again, meanwhile, the main power supply button interlocking rod 311 abuts against the main closing synchronous plate 103, so that the main power supply closing knob 101 cannot be manually operated to rotate, the main power supply cannot be closed and communicated, meanwhile, the power supply button interlocking rod 312 is far away from the standby closing synchronous plate 203, the main shaft 13 of the circuit breaker 200 can be rotationally closed, and the standby power supply closing knob 201 can be manually operated, so that the standby power supply circuit breaker 200 cannot be closed.
According to the invention, the locking head 21 on the main interlocking plate 2 can only be buckled with one locking clamping groove 130 in a strong mechanical interlocking mode, and the other rotating shaft 13 rotates after buckling to deflect the other locking clamping groove 130, so that the other locking head 21 can not move any more, only one circuit breaker can be switched on and electrified, and the other circuit breaker can not be operated under the condition that one circuit breaker is electrified, and the interlocking between the two circuit breakers of the high-voltage power supply is enhanced through mechanical interlocking, so that the safety of a circuit and operators is ensured.
The technical features of the above embodiments may be combined arbitrarily, and the steps of the method are not limited to the execution sequence, so that all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description of the present specification.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. An electromagnetic mechanical interlocking device for dual power control, comprising a main power circuit breaker (100), a standby power circuit breaker (200) and a cabinet (300), characterized in that the electromagnetic mechanical interlocking device comprises:
The support device (1) is arranged on the cabinet body (300) and comprises a support frame (11) and two mounting seats (12), each mounting seat (12) is respectively arranged above the main power circuit breaker (100) and the standby power circuit breaker (200), the two mounting seats (12) are respectively provided with a circuit breaker main shaft (13), and the circuit breaker main shaft (13) is provided with a locking clamping groove (130);
the main interlocking plate (2), two ends of the main interlocking plate (2) are provided with locking heads (21) which are matched with the locking clamping grooves (130), and the main interlocking plate (2) is buckled on the supporting frame (11) in a sliding manner;
The standby power supply locking device (4) comprises an elastic connecting piece (41), one end of the elastic connecting piece (41) is fixed on a cabinet body (300) close to the standby power supply circuit breaker (200), and the other end of the elastic connecting piece (41) is fixed on the main interlocking plate (2);
the main power supply locking device (5) comprises an electric telescopic device (51) and a connecting buckle (52), one end of the connecting buckle (52) is connected to the main interlocking plate (2), the other end of the connecting buckle (52) is in telescopic linkage through the electric telescopic device (51), and the tensile direction of the electric telescopic device (51) is opposite to the elastic direction of the elastic connecting piece (41).
2. Electromagnetic mechanical interlocking device for dual power control according to claim 1, characterized in that the breaker spindle (13) and the mounting seat (12) are in running fit, the breaker spindle (13) comprises a locking chassis (131) and a rotating shaft (132), and the locking chassis (131) is sleeved on the rotating shaft (132) and rotates synchronously with the rotating shaft (132).
3. The electromagnetic mechanical interlocking device for dual power control according to claim 2, wherein a rotating connector (133) is connected to an end of the rotating shaft (132), the rotating connector (133) is connected to an energy storage spring, and the rotating connector (133) drives the rotating shaft (132) to rotate.
4. An electromagnetic mechanical interlocking device for dual power control according to claim 3, characterized in that in the breaker main shaft (13) of two mounting seats (12), each locking clamping groove (130) is arranged on the locking chassis (131), when one locking clamping groove (130) is buckled with the locking head (21), the breaker in which the locking clamping groove (130) is positioned is in a breaking locking state, and the other breaker is free to be closed or broken.
5. The electromagnetic mechanical interlocking device for dual power control according to claim 4, wherein both the locking card grooves (130) are arc-shaped grooves, and the end shape of the locking head (21) is a circular plate corresponding to the arc-shaped groove shape.
6. Electromagnetic mechanical interlocking device for dual power control according to claim 1, characterized in that the main interlocking plate (2) is made of a multi-layer steel plate, a plurality of limiting grooves (20) are formed in the main interlocking plate (2), fixing screws (22) are arranged in each limiting groove (20), and the fixing screws (22) are in threaded connection with the cabinet body (300).
7. Electromagnetic mechanical interlocking device for double power control according to claim 6, characterized in that said main power circuit breaker (100) is provided with a main power closing knob (101) and a main closing shaft (102), the end of said main closing shaft (102) being provided with a main closing synchronizing plate (103);
the standby power circuit breaker (200) is provided with a standby power switching-on knob (201) and a standby switching-on shaft (202), and the end part of the standby switching-on shaft (202) is provided with a standby switching-on synchronous plate (203).
8. The electromagnetic mechanical interlocking device for dual power control according to claim 7, wherein an auxiliary interlocking plate (3) is further arranged on the main interlocking plate (2), the auxiliary interlocking plate (3) comprises an auxiliary interlocking main plate (31) and a plurality of interlocking rods (32), one end of each interlocking rod (32) is connected with the main interlocking plate (2), and the other end of each interlocking rod (32) is connected with the auxiliary interlocking main plate (31).
9. The electromagnetic mechanical interlocking device for double power supply control according to claim 8, wherein a main power supply button interlocking rod (311) and a standby power supply button interlocking rod (312) are respectively arranged on two sides of the auxiliary interlocking main board (31), and when one locking head (21) in the main interlocking board (2) is buckled in a locking clamping groove (130) above the standby power supply circuit breaker (200), the standby power supply button interlocking rod (312) is abutted against the standby closing synchronous board (203) so that the standby power supply closing knob (201) cannot rotate; when one locking head (21) in the main interlocking plate (2) is buckled on a locking clamping groove (130) above the main power circuit breaker (100), the main power button interlocking rod (311) is abutted on the main closing synchronization plate (103), so that the main power closing knob (101) cannot rotate.
10. Electromagnetic mechanical interlocking device for dual power control according to claim 1, characterized in that the elastic connection (41) is a spring, the electric telescopic device (51) is an electromagnetic switch or an electric telescopic rod, the electric telescopic device (51) is located between the main interlocking plate (2) and the auxiliary interlocking plate (3), and the connection buckle (52) is fixed on one of the interlocking rods (32).
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| CN202410824460.XA CN118380283B (en) | 2024-06-25 | 2024-06-25 | Electromagnetic mechanical interlocking device for dual power supply control |
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| CN202410824460.XA CN118380283B (en) | 2024-06-25 | 2024-06-25 | Electromagnetic mechanical interlocking device for dual power supply control |
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Cited By (1)
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| CN119482027A (en) * | 2024-12-23 | 2025-02-18 | 浙江金盾电器有限公司 | Energy-saving power distribution cabinet |
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| CN118380283B (en) | 2024-09-20 |
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