CN111508765A - Five-prevention interlocking switch cabinet - Google Patents

Five-prevention interlocking switch cabinet Download PDF

Info

Publication number
CN111508765A
CN111508765A CN202010306162.3A CN202010306162A CN111508765A CN 111508765 A CN111508765 A CN 111508765A CN 202010306162 A CN202010306162 A CN 202010306162A CN 111508765 A CN111508765 A CN 111508765A
Authority
CN
China
Prior art keywords
locking
rotating shaft
isolation
grounding
plate
Prior art date
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.)
Pending
Application number
CN202010306162.3A
Other languages
Chinese (zh)
Inventor
林存朋
张小武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huntsman Hangzhou Power Technology Co ltd
Original Assignee
Huntsman Hangzhou Power Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huntsman Hangzhou Power Technology Co ltd filed Critical Huntsman Hangzhou Power Technology Co ltd
Priority to CN202010306162.3A priority Critical patent/CN111508765A/en
Publication of CN111508765A publication Critical patent/CN111508765A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01H33/02—Details
    • H01H33/46—Interlocking mechanisms
    • H01H33/52—Interlocking mechanisms for interlocking two or more switches
    • 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
    • H01H33/02—Details
    • H01H33/46—Interlocking mechanisms
    • H01H33/48—Interlocking mechanisms for interlocking between casing or cover and mechanism for operating contacts
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/16—Earthing arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/32—Mounting of devices therein

Abstract

The invention relates to a five-prevention interlocking switch cabinet, which comprises a cabinet body, a vacuum circuit breaker, an isolating switch, a grounding switch and a five-prevention interlocking mechanism, wherein the vacuum circuit breaker, the isolating switch, the grounding switch and the five-prevention interlocking mechanism are arranged in the cabinet body; the five-prevention interlocking mechanism is locked with the closing pawl of the vacuum circuit breaker, so that the potential safety hazard of mistaken closing during opening of the vacuum circuit breaker is eliminated, and the safety is high; meanwhile, the five-prevention interlocking switch cabinet is simple in structure and convenient to install.

Description

Five-prevention interlocking switch cabinet
Technical Field
The invention relates to a switch cabinet, in particular to a five-prevention interlocking switch cabinet adopting a novel five-prevention interlocking mechanism.
Background
The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. The components in the switch cabinet mainly comprise a vacuum circuit breaker, an isolating switch and a grounding switch, and in order to realize five-prevention of the switch cabinet, a five-prevention interlocking mechanism needs to be arranged among the components.
The five-prevention interlocking mechanism of the existing five-prevention interlocking switch cabinet generally adopts a linkage mode to ensure that the vacuum circuit breaker can be disconnected with the disconnecting switch and the grounding switch at the same time, when the disconnecting switch is disconnected with a load, the five-prevention interlocking mechanism can simultaneously disconnect the vacuum circuit breaker, the occurrence of misoperation cannot be avoided, the result of misoperation can only be reduced, and certain potential safety hazard exists; in order to ensure that the five-prevention interlocking mechanism can break the vacuum circuit breaker in time, the five-prevention interlocking mechanism is usually in linkage connection with a switching-off lock of the vacuum circuit breaker, and the five-prevention interlocking mechanism can be operated only after the circuit breaker is switched off, but in the connection mode, a circuit breaker switching-off position signal is uploaded only in a mode of an electric appliance switching point, the circuit breaker can still be switched on when a circuit breaker switching-on electric appliance control loop is switched off and other equipment in a cabinet is operated, and the circuit breaker can be switched off immediately after the circuit breaker is switched on, so that certain potential safety hazards exist in the operation process; and current five prevent interlocking mechanism dispersion at circuit breaker, isolator and earthing switch department, lead to the structure of cubical switchboard complicated, it is inconvenient to install.
Disclosure of Invention
In order to overcome the defects, the five-prevention interlocking switch cabinet integrally connected with the circuit breaker operating mechanism has the advantages of high safety, compact structure, convenience in installation and the like by acquiring the opening and closing positions of the main shaft of the circuit breaker and carrying out the operation sequence of interconnection interlocking by taking the closing of the locking circuit breaker as the center.
In order to achieve the purpose, the invention adopts a five-prevention interlocking switch cabinet, which comprises a cabinet body, a vacuum circuit breaker, an isolating switch and a grounding switch, wherein the vacuum circuit breaker, the isolating switch and the grounding switch are arranged in the cabinet body, the five-prevention interlocking mechanism is arranged below the vacuum circuit breaker and comprises a chassis, a door closing rotating shaft, a locking rotating shaft, an isolating lock rod and a locking push rod, the door closing rotating shaft, the isolating lock rod and the locking push rod are arranged in the chassis in parallel, the locking rotating shaft, the door closing rotating shaft, the isolating lock rod and the locking push rod are mutually and vertically arranged in the chassis, the locking rotating shaft is provided with a connecting plate, the connecting plate is in linkage connection with a main shaft of the vacuum circuit breaker, the locking rotating shaft is provided with a brake separating device at the intersection position of the locking rotating shaft and the isolating lock rod, the isolating lock rod is provided with a brake separating block corresponding to the brake separating device, two, the two ends of the locking push rod are respectively provided with a grounding locking plate and a cam plate, two sides of the locking rotating shaft are respectively provided with an isolating rotating shaft and a grounding rotating shaft in parallel, the isolating locking plate and the cam plate are sleeved on the isolating rotating shaft to coaxially rotate, the driving wheel plate and the grounding locking plate are sleeved on the grounding rotating shaft to coaxially rotate, the isolating rotating shaft is in linkage connection with the isolating switch, the grounding rotating shaft is in linkage connection with the grounding switch, a plurality of locking grooves matched with the isolating locking rod and the locking push rod are respectively formed in the peripheries of the isolating locking plate and the grounding locking plate, a piston is arranged on the driving wheel plate, one end of the piston is in linkage connection with a circuit breaker closing pawl, a reset spring for pulling the isolating locking rod to the driving wheel plate is sleeved on the isolating locking rod, and a reset spring.
The invention is further provided with the closing rotating shaft arranged outside one end of the locking rotating shaft, the closing rotating shaft and the locking rotating shaft are meshed and linked through the bevel gear, and the closing rotating shaft is provided with the door locking plate.
The invention is further arranged that four locking grooves are arranged on the isolation locking plate and the grounding locking plate, and the four locking grooves are arranged at equal angles of 90 degrees.
The invention is further provided that the isolation rotating shaft and the grounding rotating shaft are hexagonal shafts, and the centers of the driving wheel plate, the cam plate, the isolation locking plate and the grounding locking plate correspond to the hexagonal shafts to form a hexagonal hole.
The invention is further provided with abdicating grooves for the locking rotating shaft to pass through are formed on the isolation locking rod and the locking push rod.
The invention is further provided that the brake separating block is a brake separating bearing connected with the isolating lock rod.
The invention is further provided that the isolation rotating shaft is connected with an isolation connecting rod, the isolation rotating shaft is connected with the isolation switch through the isolation connecting rod, the grounding rotating shaft is connected with a grounding connecting rod, and the grounding rotating shaft is connected with the grounding switch through the grounding connecting rod.
The invention is further arranged such that the chassis forms a link slot at the passage of the isolating link and the grounding link.
According to the invention, the on-off position of the main shaft of the circuit breaker is acquired, and the operation sequence of interconnection and interlocking is carried out by taking the closing of the closed circuit breaker as a center, namely, the circuit breaker closing position interlocking mechanism locks the isolation switch, the operation shaft of the grounding switch and the operation wicket of the synchronous locking five-prevention interlocking mechanism in a mechanical mode, so that misoperation is effectively prevented, the unlocking mechanism operates the wicket when the circuit breaker is in an open position, and the circuit breaker closing sincere is synchronously locked, the rotation shaft of the isolation switch is locked, so that the circuit breaker is prevented from being closed when the grounding switch is operated.
The five-prevention interlocking mechanism has the beneficial effects that the isolating switch, the grounding switch and the cabinet door are locked when the vacuum circuit breaker is switched on, so that misoperation during the switching-on of the vacuum circuit breaker is avoided; the five-prevention interlocking mechanism is locked with the closing pawl of the vacuum circuit breaker, so that the potential safety hazard of mistaken closing during opening of the vacuum circuit breaker is eliminated, and the safety is high; meanwhile, the five-prevention interlocking switch cabinet is simple in structure and convenient to install.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of a five-prevention interlock mechanism according to an embodiment of the present invention.
FIG. 3 is a schematic view of the isolation locking bar mating of an embodiment of the present invention.
FIG. 4 is a schematic view of the locking pushrod in accordance with an embodiment of the present invention.
Fig. 5 is a partial enlarged view of an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 5, a five-prevention interlocking switch cabinet according to a specific embodiment of the present invention includes a cabinet 50, and a vacuum circuit breaker 20, an isolating switch 30, a grounding switch 40 and a five-prevention interlocking mechanism 10 which are disposed in the cabinet 50, wherein the five-prevention interlocking mechanism 10 is disposed below the vacuum circuit breaker 20, the five-prevention interlocking mechanism 10 includes a chassis 1, a closing rotating shaft 2, a closing rotating shaft 3, an isolating lock rod 4 and a locking push rod 5, the closing rotating shaft 2, the isolating lock rod 4 and the locking push rod 5 are disposed in parallel in the chassis 1, the closing rotating shaft 3, the closing rotating shaft 2, the isolating lock rod 4 and the locking push rod 5 are disposed in the chassis 1 perpendicularly to each other, a connecting plate 31 is disposed on the closing rotating shaft 3, the connecting plate 31 is linked with a main shaft 201 of the vacuum circuit breaker 20, a separating latch 32 is disposed at a position where the closing rotating shaft 3 intersects with the isolating lock rod 4, a separating latch bearing 41 is disposed on the isolating lock, the two ends of the isolation lock rod 4 are respectively provided with a driving wheel plate 42 and an isolation locking plate 43, the two ends of the locking push rod 5 are respectively provided with a grounding locking plate 51 and a cam plate 52, the two sides of the locking rotating shaft 3 are respectively provided with an isolation rotating shaft 6 and a grounding rotating shaft 7 in parallel, the isolation locking plate 43 and the cam plate 52 are sleeved on the isolation rotating shaft 6 to coaxially rotate, the driving wheel plate 42 and the grounding locking plate 51 are sleeved on the grounding rotating shaft 7 to coaxially rotate, the isolation rotating shaft 6 is connected with an isolation connecting rod 61, the isolation rotating shaft 6 is connected with the isolation switch 30 through the isolation connecting rod 61, the grounding rotating shaft 7 is connected with a grounding connecting rod 71, the grounding rotating shaft 7 is connected with the grounding switch 30 through the grounding connecting rod 71, the chassis 1 forms a connecting rod groove 11 at the passing part of the isolation connecting rod 61 and the grounding connecting rod 71, the periphery of the isolation locking plate 43 and the grounding locking plate, the four locking grooves are arranged at equal angles of 90 degrees, a piston 8 is arranged on the driving wheel plate 42, the piston 8 is sleeved in the piston sleeve 81 and moves up and down, the upper end of the piston 8 is in linkage connection with a closing pawl of the vacuum circuit breaker, a reset spring 9 for pulling the isolation lock rod 4 to the driving wheel plate 42 is sleeved on the isolation lock rod 4, a reset spring for pulling the locking push rod 5 to the cam plate 52 is sleeved on the locking push rod 5, the closing rotating shaft 2 is arranged outside one end of the locking rotating shaft 3, the closing rotating shaft 2 and the locking rotating shaft 3 are in meshing linkage through a bevel gear, a door locking plate 21 is arranged on the closing rotating shaft 2, the door locking plate 21 is matched with a door lock to realize locking, and the isolation lock rod 4 and the locking push rod 5 are provided with a abd.
The isolation rotating shaft 6 and the grounding rotating shaft 7 are both hexagonal shafts, and the centers of the driving wheel plate 42, the cam plate 52, the isolation locking plate 43 and the grounding locking plate 51 correspond to the hexagonal shafts to form a hexagonal hole.
The five-prevention interlocking mechanism is arranged below the vacuum circuit breaker, the connecting plate is linked with the vacuum circuit breaker to acquire the opening and closing position of a main shaft of the vacuum circuit breaker, when the vacuum circuit breaker is at the closing position, the opening pawl pushes the isolation lock rod into the locking groove of the isolation locking plate to lock the isolation rotating shaft, so that the isolation switch connected with the isolation rotating shaft is locked, at the moment, the cam plate on the isolation rotating shaft pushes the locking push rod into the locking groove of the grounding locking plate to lock the grounding rotating shaft, so that the grounding switch connected with the grounding rotating shaft is locked, meanwhile, the closing rotating shaft is locked through the locking rotating shaft to lock the door lock of the door lock plate, the door is prevented from being opened, the isolation switch is automatically locked after closing, the isolation switch is prevented from being pulled with load, and the grounding switch and the door plate of the switch cabinet. When the vacuum circuit breaker is in the opening position, the isolation lock rod releases the locking of the isolation rotating shaft under the action of the reset spring, so that the isolation switch can be operated, and meanwhile, the locking of the door lock is released; the disconnecting switch is operated to be opened, the cam plate on the isolating rotating shaft rotates to release the pushing of the locking push rod, the locking push rod releases the locking of the grounding rotating shaft under the action of the reset spring, and the locking synchronization between the disconnecting switch and the grounding switch is released; and a driving wheel plate on the grounding rotating shaft pushes a piston to lock a closing pawl of the vacuum circuit breaker to prevent closing with a ground switch, and a reset locking push rod locks an isolating switch rotating shaft through a cam plate to prevent closing with a ground switch.
The above embodiments are preferred embodiments of the present invention, and in addition to the above embodiments, other obvious modifications of the present invention, such as the hexagonal shafts of the isolation shaft and the grounding shaft can be changed into any special-shaped shaft, etc., are also within the protection scope of the present invention.

Claims (8)

1. The utility model provides a five prevent interlocking cubical switchboard, includes the cabinet body and sets up at internal vacuum circuit breaker, isolator, earthing switch of cabinet, its characterized in that: the five-prevention interlocking switch cabinet also comprises a five-prevention interlocking mechanism, the five-prevention interlocking mechanism is arranged below the vacuum circuit breaker and comprises a chassis, a door closing rotating shaft, a locking rotating shaft, an isolation locking rod and a locking push rod, the door closing rotating shaft, the isolation locking rod and the locking push rod are arranged in the chassis in parallel, the locking rotating shaft, the door closing rotating shaft, the isolation locking rod and the locking push rod are arranged in the chassis in a mutually perpendicular mode, a connecting plate is arranged on the locking rotating shaft and is connected with a main shaft of the vacuum circuit breaker in a linkage mode, a brake separating pawl is arranged at the intersection position of the locking rotating shaft and the isolation locking rod and corresponds to the brake separating pawl, a brake separating block is arranged at the two ends of the isolation locking rod respectively provided with a driving wheel plate and an isolation locking plate, a grounding locking plate and a cam plate are arranged at the two ends of the locking push rod respectively, the isolation rotating shaft and the grounding rotating shaft are arranged at the two, the driving wheel plate and the grounding locking plate are sleeved on the grounding rotating shaft to coaxially rotate, the isolation rotating shaft is in linkage connection with the isolating switch, the grounding rotating shaft is in linkage connection with the grounding switch, a plurality of locking grooves matched with the isolation locking rod and the locking push rod are formed in the peripheries of the isolation locking plate and the grounding locking plate respectively, a piston is arranged on the driving wheel plate, one end of the piston is in linkage connection with a closing pawl of the circuit breaker, a reset spring for pulling the isolation locking rod to the driving wheel plate is sleeved on the isolation locking rod, and a reset spring for pulling the locking push rod to the cam plate is sleeved on the locking push rod.
2. The five-prevention interlocking switch cabinet according to claim 1, characterized in that: the closing rotating shaft is arranged outside one end of the locking rotating shaft, the closing rotating shaft and the locking rotating shaft are meshed and linked through a bevel gear, and a door locking plate is arranged on the closing rotating shaft.
3. The five-prevention interlocking switch cabinet according to claim 1 or 2, characterized in that: four locking grooves are formed in the isolating locking plate and the grounding locking plate, and the four locking grooves are arranged at equal angles of 90 degrees.
4. The five-prevention interlocking switch cabinet according to claim 1 or 2, characterized in that: the isolation rotating shaft and the grounding rotating shaft are both hexagonal shafts, and the centers of the driving wheel plate, the cam plate, the isolation locking plate and the grounding locking plate correspond to the hexagonal shafts to form a hexagonal hole.
5. The five-prevention interlocking switch cabinet according to claim 1 or 2, characterized in that: and the isolating lock rod and the locking push rod are provided with abdicating grooves for the locking rotating shaft to pass through.
6. The five-prevention interlocking switch cabinet according to claim 1 or 2, characterized in that: the brake separating block is a brake separating bearing connected to the isolating lock rod.
7. The five-prevention interlocking switch cabinet according to claim 1 or 2, characterized in that: the isolation rotating shaft is connected with an isolation connecting rod, the isolation rotating shaft is connected with the isolation switch through the isolation connecting rod, the grounding rotating shaft is connected with a grounding connecting rod, and the grounding rotating shaft is connected with the grounding switch through the grounding connecting rod.
8. The five-prevention interlocking switch cabinet according to claim 1 or 2, characterized in that: the chassis forms a link slot at the passage of the isolating link and the grounding link.
CN202010306162.3A 2020-04-17 2020-04-17 Five-prevention interlocking switch cabinet Pending CN111508765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010306162.3A CN111508765A (en) 2020-04-17 2020-04-17 Five-prevention interlocking switch cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010306162.3A CN111508765A (en) 2020-04-17 2020-04-17 Five-prevention interlocking switch cabinet

Publications (1)

Publication Number Publication Date
CN111508765A true CN111508765A (en) 2020-08-07

Family

ID=71876221

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010306162.3A Pending CN111508765A (en) 2020-04-17 2020-04-17 Five-prevention interlocking switch cabinet

Country Status (1)

Country Link
CN (1) CN111508765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021208355A1 (en) * 2020-04-17 2021-10-21 亨斯迈(杭州)电力技术有限公司 Switch cabinet interlock mechanism for preventing five types of accidental operations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021208355A1 (en) * 2020-04-17 2021-10-21 亨斯迈(杭州)电力技术有限公司 Switch cabinet interlock mechanism for preventing five types of accidental operations

Similar Documents

Publication Publication Date Title
CN206893523U (en) A kind of double-fracture disconnecting switch with ground connection linkage
CA1289607C (en) Draw-in and draw-out mechanism of an electrical circuit breaker with main and auxiliary circuits
CN104409273B (en) Pole type High-Voltage Electrical Appliances cubicle switch
CN111508764A (en) Five-prevention interlocking mechanism for switch cabinet
CN103441439B (en) A kind of switch cubicle that isolating switch, vacuum circuit-breaker and earthed switch are housed
CN203434502U (en) A switch cabinet provided with isolating switches, vacuum circuit breakers, and grounding switches
CN111508765A (en) Five-prevention interlocking switch cabinet
CN201985015U (en) Mechanical manipulation interlocking device
CN111613479B (en) Novel five-prevention locking method
CN201054311Y (en) A key interlocking device for gas insulation switch device
CN211828608U (en) Five-prevention interlocking mechanism for switch cabinet
CN211828609U (en) Five-prevention interlocking switch cabinet
CN203351457U (en) Interlocking mechanism among isolating switch, vacuum circuit breaker and cabinet door
CN204011153U (en) Ring main unit operation interlocking device
CN201000823Y (en) Interlocking device for high-voltage isolation switch and cabinet door
CN210489510U (en) Circuit breaker interlocking device in high tension switchgear
CN113013771B (en) Interlocking mechanism of switch equipment
CN216435771U (en) Four-axis interlocking operating mechanism for high-voltage switch cabinet
CN219303517U (en) Grounding switch interlocking device
CN109494112B (en) Vacuum switch looped netowrk cabinet operating mechanism
CN201000822Y (en) Five-prevention interlocking mechanism for 3~35kV AC metal closed switch equipment
CN220651897U (en) Misoperation preventing device for load switch
CN215578272U (en) Operation interlocking device for lower door and grounding switch of air insulation switch cabinet
CN117198777A (en) Misoperation prevention mechanism
CN219476528U (en) Interlocking mechanism of 24KV solid insulation switch cabinet

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination