CN113745982B - High-voltage ring network cabinet safe to operate - Google Patents
High-voltage ring network cabinet safe to operate Download PDFInfo
- Publication number
- CN113745982B CN113745982B CN202111150679.9A CN202111150679A CN113745982B CN 113745982 B CN113745982 B CN 113745982B CN 202111150679 A CN202111150679 A CN 202111150679A CN 113745982 B CN113745982 B CN 113745982B
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- Prior art keywords
- rotating rod
- opening
- closing
- safety
- cabinet body
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
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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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- 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
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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
- 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
-
- 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
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to a high-voltage loop-network cabinet with safe operation, which comprises a cabinet body, wherein the cabinet body is provided with an operation chamber and a cable chamber which are isolated from each other, a control element is arranged in the operation chamber, one side of the cabinet body, which is positioned in the cable chamber, is provided with a safety door, the control element comprises a circuit breaker, a disconnecting switch and a grounding switch, the cabinet body is provided with a door interlock, a linkage mechanism is arranged in the operation chamber, the door interlock and the motion track of the linkage mechanism are partially overlapped, and except for the case that the circuit breaker is in a closing state, the disconnecting switch is in a separating state, and the grounding switch is in a closing state, the linkage mechanism and the door interlock are arranged in a dislocation mode, and the linkage mechanism is positioned on the motion track of the door interlock in the combined state of the rest circuit breaker, the disconnecting switch and the grounding switch. By adopting the scheme, the high-voltage ring network cabinet is safe to operate, and the safety door can be opened only when the circuit breaker is in a closing state, the isolating switch is in a separating brake state, and the grounding switch is in a closing state, so that the used cable chamber can be safely opened.
Description
Technical Field
The invention relates to a high-voltage ring network cabinet with safe operation.
Background
The high-voltage ring network cabinets are used for improving the power supply reliability, so that a user can obtain power from two directions, and the power supply networks are generally connected into a ring shape. This power supply mode is simply referred to as ring network power supply. In ac 10KV distribution systems such as ports and high-rise buildings, because the load capacity is not large, a high-voltage loop is usually controlled by a load switch or a vacuum contactor and is provided with a high-voltage fuse for protection.
The high-voltage ring main unit generally comprises an operation room and a cable room, wherein control elements such as a circuit breaker, a grounding switch and a disconnecting switch are arranged in the operation room, a large number of high-voltage wires which do not need to be operated are arranged in the cable room, and in addition, the cable room is required to be provided with a safety door, so that the safety door effectively seals the cable room and prevents the high-voltage wires in the cable room from being contacted when a circuit works, and safety is guaranteed.
The existing high-voltage ring network cabinets have the following problems: the existing safety door adopts independent components such as a lockset to open and close the cable chamber, so that when the cable chamber is opened under the condition that a circuit is not cut off, the electric shock hazard is easily generated due to contact with high-voltage wires.
Therefore, how to ensure that the circuit is effectively cut off to prevent the occurrence of danger when the cable chamber is opened is a problem to be solved by those skilled in the art.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the high-voltage ring network cabinet which is safe to operate and can only open the safety door when the circuit breaker is in a closing state, the isolating switch is in a separating switch state and the grounding switch is in a closing state so as to ensure that the used cable chamber is safely opened.
In order to achieve the above purpose, the present invention provides the following technical solutions: including the cabinet body, the cabinet body is provided with the operating chamber and the cable chamber of mutual isolation, be provided with control element in the operating chamber, the cabinet body is located cable chamber one side and is provided with the emergency exit that is used for opening and close cable chamber, its characterized in that: the control element comprises a breaker, a disconnecting switch and a grounding switch, a door interlock used for controlling the opening and closing of a safety door is arranged on the cabinet body, a linkage mechanism used for linkage connection of the breaker, the disconnecting switch and the grounding switch is arranged in the operation chamber, the door interlock and the motion track of the linkage mechanism are partially overlapped, and except for the fact that the linkage mechanism and the door interlock are arranged in a dislocation mode when the breaker is in a closing state and the disconnecting switch is in a breaking state and the grounding switch is in a closing state, the linkage mechanism is located on the motion track of the door interlock in a combined state of the other breakers, the disconnecting switch and the grounding switch.
The invention is further provided with: the linkage mechanism comprises a first rotating rod, a second rotating rod, a third rotating rod, an isolated grounding linkage assembly and a circuit breaker opening and closing control assembly, wherein the first rotating rod, the second rotating rod and the third rotating rod are all installed on the cabinet body in a circumferential rotation mode, the first rotating rod is used for controlling the opening and closing of the grounding switch, the second rotating rod is used for controlling the opening and closing of the isolating switch, the third rotating rod is used for controlling the opening and closing of the circuit breaker, the isolated grounding linkage assembly is used for linkage connection of the first rotating rod and the second rotating rod, a closing position, a first opening position and a second opening position are arranged on a rotating track of the cabinet body, when the first rotating rod is located at the closing position, the grounding switch is in a closing state, the isolating switch is in an opening state, when the first rotating rod is located at the first opening position, the grounding switch is in an opening state, and the isolating switch is in a brake separating state, when the first rotating rod is positioned at the second brake separating position, the grounding switch is in a brake separating state, and the isolating switch is in a brake closing state, the circuit breaker opening and closing control assembly is used for limiting the brake closing of the circuit breaker when the first rotating rod is positioned at the brake separating position and is used for realizing the opening and closing of the circuit breaker when the first rotating rod is positioned at the first brake separating position, the first rotating rod or the second rotating rod is provided with a first limiting piece, when the first rotating rod is positioned at the second brake separating position, the first limiting piece is positioned on a motion track of the door interlock, and the linkage mechanism further comprises a second limiting piece connected with the third rotating rod in a linkage manner, and when the circuit breaker is positioned at the brake separating position, the second limiting piece is positioned on the motion track of the door interlock.
The invention is further provided with: the circuit breaker opening and closing control assembly comprises an opening and closing part, a matching part, a lifting rotating plate and a counterweight part, wherein the opening and closing part is hinged to the cabinet body, the matching part is fixedly installed on a third rotating rod, the rotating track of the opening and closing part and the rotating track of the matching part are partially overlapped, the counterweight part is arranged on the opening and closing part, the lifting rotating plate is located below the counterweight part and rotationally installed on the cabinet body, the lifting rotating plate and the first rotating rod are in linkage arrangement, the upper end of the lifting rotating plate is provided with a lifting cambered surface for pushing the counterweight part upwards, when the first rotating rod is located at a closing position and a second opening position, the counterweight part is separated from the lifting cambered surface, the opening and closing part and the matching part are in dislocation arrangement, and when the first rotating rod is located at the first opening position, the counterweight part and the lifting cambered surface are propped against each other, and the opening and closing part is located on the rotating track of the matching part.
The invention is further provided with: the counter weight piece articulates in opening and close the piece, and the articulated axial of counter weight piece relative opening and close the articulated axial of the relative cabinet body of piece is parallel to each other, the cabinet body is provided with the direction inserted bar, the direction jack along vertical extension has been seted up to the counter weight piece, the direction inserted bar inserts and locates in the direction jack.
The invention is further provided with: the isolation grounding linkage assembly comprises a middle rotating rod, the first rotating rod, the second rotating rod and the middle rotating rod are axially arranged in parallel, the middle rotating rod is located between the first rotating rod and the second rotating rod and is installed on the cabinet body in a circumferential rotation mode, a first hinge connecting rod is arranged between the first rotating rod and the middle rotating rod, a second hinge connecting rod is arranged between the second rotating rod and the middle rotating rod, and the lifting rotating plate is fixedly installed on the middle rotating rod.
The invention is further provided with: the axial direction of the guide inserted link is parallel to the axial direction of the middle rotating link, and the hinging axial direction of the opening and closing part relative to the cabinet body is parallel to the axial direction of the middle rotating link.
The invention is further provided with: the cabinet body is provided with a cylinder for opening the circuit breaker, and the matching piece is positioned on the motion track of the output shaft of the cylinder.
The invention is further provided with: the door interlock is including the frame that slides, the frame that slides is installed in the cabinet body, be provided with on the frame that slides and carry door handle, safety inserted bar and safety shield, the safety door is located the motion trail of safety inserted bar, the motion trail of first locating part and second locating part is the partial overlapping setting with safety shield's motion trail, and when at least one in first locating part and the second locating part was located the slip trail of safety shield, safety inserted bar inserts and establishes the connection safety door.
The invention is further provided with: the door interlock is characterized by further comprising a limiting baffle and a limiting spring, wherein the limiting baffle is installed on the cabinet body in a sliding mode along the sliding direction of the vertical sliding frame and located between the sliding frame and the safety door, the movement track of the limiting baffle is partially overlapped with the movement track of the safety inserting rod, the limiting spring is used for driving the limiting baffle to move towards the overlapping position of the movement track of the safety inserting rod, the limiting baffle is provided with a door locking pushing piece, and the door locking pushing piece is used for being pushed by the safety door to enable the limiting baffle to move towards the overlapping position far away from the movement track of the safety inserting rod when the safety door closes the cable chamber.
The invention is further provided with: the sliding direction of the sliding frame is arranged vertically.
Through adopting above-mentioned technical scheme, circuit breaker, isolator and earthing switch are in realizing the linkage connection through the link gear, and only when the circuit breaker is in the state of closing and isolator is in the state of opening and earthing switch is in the state of closing, therefore, the door interlock alright remove the locking to the emergency exit through the motion, make the movable emergency exit open the cable room, at this moment, not only because isolator is in the state of opening, cut off the power supply and guarantee that the cable in the cable room can not produce high voltage load and guarantee the security, and circuit breaker and earthing switch are in the state of closing, realize that the cable in the cable room passes through circuit breaker and earthing switch in proper order and carries out the ground connection, thereby lead to the zero clearing of voltage with the residual current in the cable to realize the earth, because the isolator divides the floodgate, when the circuit breaker is opened, this can open the cable room and overhauls, but not connect the residual charge of play line end, the contact appears, only with the isolator ground, close the switch-off, the cable is closed again, the cable is connected to the cable is opened to the whole line, even if the high voltage is connected to the ground, the high-voltage protection circuit breaker is realized, the safe contact is realized, even if the high-voltage protection is realized, the safety is realized to the electric circuit breaker is connected to the ground, the safety is further, the safety is connected to the ground, the safety is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a right side view of an embodiment of the present invention;
FIG. 3 is an enlarged view of A in FIG. 1;
FIG. 4 is a schematic circuit diagram of an embodiment of the present invention;
FIG. 5 is an assembly view of an isolated ground linkage assembly, a first rotating lever, a second rotating lever portion in accordance with an embodiment of the present invention;
fig. 6 is an assembly view of a circuit breaker opening and closing control assembly, a third rotating lever portion in accordance with an embodiment of the present invention;
fig. 7 is a state diagram of the circuit breaker opening and closing control assembly, the third rotating lever portion in an embodiment of the present invention;
Fig. 8 is a state diagram of the circuit breaker opening and closing control assembly, the third rotating lever portion in an embodiment of the present invention;
FIG. 9 is an enlarged view of B in FIG. 3;
FIG. 10 is an enlarged view of C in FIG. 7;
FIG. 11 is an enlarged view of D of FIG. 8;
FIG. 12 is an enlarged view of E in FIG. 7;
FIG. 13 is an assembly view of a door interlock portion in accordance with an embodiment of the present invention;
FIG. 14 is a schematic view of a safety lever locking safety door according to an embodiment of the present invention;
fig. 15 is a schematic view of a security door opening cable compartment in an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-4, the invention discloses a high-voltage loop-network cabinet for operating safety, which comprises a cabinet body 1, wherein the cabinet body 1 is provided with an operation chamber 11 and a cable chamber 12 which are isolated from each other, the cable chamber 12 is positioned below the operation chamber 11, a control element is arranged in the operation chamber 11, the cabinet body 1 is positioned at the front side of the cable chamber 12, a safety door 13 for opening and closing the cable chamber 12 is arranged, wherein the control element comprises a circuit breaker, an isolating switch and a grounding switch, in addition, a door interlock 2 is arranged on the cabinet body 1, so that the safety door 13 is locked on the cabinet body 1 through controlling the movement of the door interlock 2to realize the effective closing of the cable chamber 12, or the safety door 13 is unlocked to realize the opening of the cable chamber 12, in addition, a linkage connection circuit breaker, an isolating switch and a linkage mechanism 3 of a grounding switch are arranged in the operation chamber 11, the door interlock 2 is partially overlapped with the movement track of the linkage mechanism 3, when the linkage mechanism 3 is positioned on the track 2, the door interlock 2 is in a combined state when the linkage 2 is in a movement track, the door interlock 2 is in a combined state, and the door interlock 2 is in a dislocated state when the linkage 2 is in a combined state, and the door interlock 2 is in a dislocated state, and the door interlock 2 is in a combined state when the motion track is in a dislocated state, and the door interlock 2 is in a state, and the door interlock state is in a dislocated state.
Therefore, the circuit breaker, the disconnecting switch and the grounding switch are in linkage connection through the linkage mechanism 3, and the linkage mechanism 3 and the door interlock 2 are arranged in a dislocation mode only when the circuit breaker is in a closing state, the disconnecting switch is in a separating state and the grounding switch is in a closing state, so that the door interlock 2 can release the locking of the safety door 13 through movement, the movable safety door 13 opens the cable chamber 12, at the moment, the disconnecting switch is in a separating state, the power supply of the power supply is cut off to ensure that the cable in the cable chamber 12 cannot generate high-voltage load to ensure the safety, and the circuit breaker and the grounding switch are in a closing state, so that the cable in the cable chamber 12 is grounded sequentially through the circuit breaker and the grounding switch, the residual current in the cable is led into the ground to realize zero clearing of the voltage, the danger of operators due to the electric shock caused by the residual current in the cable is prevented, and the high-efficiency safety is achieved.
It should be noted that, the relative positions of the operation room 11 and the cable room 12 are not limited to the above-mentioned cable room 12 being located below the operation room 11, and other reasonable relative positions may be set, and the corresponding safety door 13 is not limited to being disposed at the front side of the cable room 12, and other reasonable relative positions may be set.
The linkage mechanism 3 may be controlled by a program, mechanically linked, or the like. The control for achieving the above purpose should fall within the protection scope of the present invention, and is not avoided by adopting a complicated and simplified manner to be different from the specific embodiments disclosed later in the present invention.
As shown in fig. 5-9, the linkage mechanism 3 in this embodiment includes a first rotating rod 31, a second rotating rod 32, a third rotating rod 33, an isolated grounding linkage assembly, and a circuit breaker opening and closing control assembly, where the first rotating rod 31, the second rotating rod 32, and the third rotating rod 33 are all installed on the cabinet body 1 in a manner of rotating along a circumferential direction, and may be rotatably installed by adopting a bearing, where the first rotating rod 31 is used to control opening and closing of a grounding switch, the second rotating rod 32 is used to control opening and closing of a disconnecting switch, the third rotating rod 33 is used to control opening and closing of a circuit breaker, where the isolated grounding linkage assembly is used to connect the first rotating rod 31 with the second rotating rod 32, and the cabinet body 1 is provided with a closing position 311, a first opening position 312, and a second opening position 313, so that when the first rotating rod 31 is located at the closing position 311, the grounding switch is in a closing state, when the first rotating rod 31 is located at the first opening position 312, the disconnecting switch is located at the first opening position 311, and when the disconnecting switch is located at the first opening position 31, the disconnecting switch is located at the first opening position 313, the disconnecting switch is located at the closing state, and the first rotating rod is located at the closing position 313, and the closing position is not located at the closing position for realizing opening and closing of the circuit breaker, the first rotating rod 31 or the second rotating rod 32 is provided with a first limiting member 36 (in this embodiment, the first limiting member 36 is disposed on the first rotating rod 31), when the first rotating rod 31 is located at the second opening position 313, the first limiting member 36 is located on the motion track of the door interlock 2, in addition, the linkage mechanism 3 further includes a second limiting member 37 that is connected with the third rotating rod 33 in a linkage manner, and when the circuit breaker is in the opening state, the second limiting member 37 is located on the motion track of the door interlock 2.
The grounding switch and the isolating switch are limited through the arrangement of the isolating grounding linkage assembly, so that the isolating switch and the grounding switch only have 3 combined states (2 x2 = 4 states without linkage), and the 3 states are respectively 1; 2. the grounding switch is opened, and the isolating switch is opened; 3. the grounding switch is opened, and the isolating switch is closed. The switch-on state (circuit short circuit) of the grounding switch is prevented, and the protection function is achieved. 2. The first limiting piece 36 is arranged, so that the door interlock 2 is limited and cannot be opened when the isolating switch is in a closing state. 3. And then the circuit breaker is opened and closed only under the condition that the grounding switch or the isolating switch is in a closing state by being matched with the circuit breaker opening and closing control assembly, the first rotating rod 31 cannot rotate to keep the states of the isolating switch and the grounding switch, the circuit is conducted more safely by utilizing the characteristic that the circuit breaker has arc extinction, and the grounding switch and the isolating switch play a role in protection. 4. The second limiting piece 37 is arranged to ensure that the door interlock 2 is limited and cannot be opened when the circuit breaker is in the opening state. In sum, the realization is under the combined action of isolation earthing linkage subassembly, circuit breaker opening and closing control subassembly, first locating part 36 and second locating part 37, realize when the circuit breaker is in the combined floodgate state and isolator is in the separating brake state and earthing switch is in the combined floodgate state, link gear 3 is dislocation set with door interlock 2, realize carrying out opening of emergency exit 13 through door interlock 2, and under the combined state of other circuit breakers, isolator, earthing switch, link gear 3 all is located door interlock 2's motion track for door interlock 2 is restricted can't open emergency exit 13, guarantee the security of opening the cable room, the reliable mistake interlocking design of cabinet body 1 ensures that each switch and access door press "five proofings" program design, ensure that the switch can not carry out the maloperation.
Under the working state of the circuit, the isolating switch is in a closing state, the circuit breaker is in a closing state and the grounding switch is in a separating state, if the safety door 13 needs to be opened, the circuit breaker is controlled to firstly perform separating, then the first rotating rod 31 is rotated to the first separating position 312 from the second separating position 313 and then to the closing position 311, finally the circuit breaker is closed to complete circuit conversion, and the limit of the door interlocking 2 by the linkage mechanism 3 is released, so that the door interlocking 2 releases the locking of the safety door 13, the safety door 13 can be opened, and the process is a specific process from circuit operation to the opening of the safety door 13.
It should be noted that, the isolated grounding linkage assembly may implement linkage between the first rotating rod 31 and the second rotating rod 32 by means of program control, mechanical linkage, etc., for implementing the above-mentioned situation. Similarly, the opening and closing control assembly of the circuit breaker can achieve the situation in a program control, mechanical linkage and other modes. The control for achieving the above purpose should fall within the protection scope of the present invention, and is not avoided by adopting a complicated and simplified manner to be different from the specific embodiments disclosed later in the present invention.
As shown in fig. 10-11, the circuit breaker opening and closing control assembly in this embodiment includes an opening and closing member 351, a mating member 352, a lifting rotating plate 353, and a counterweight 354, where the opening and closing member 351 is hinged to the cabinet 1, where the mating member 352 is fixedly mounted on the third rotating rod 33 by means of a bolt or the like, and a rotating track of the opening and closing member 351 and a rotating track of the mating member 352 are partially overlapped, so that when the opening and closing member 351 is located on the rotating track of the mating member 352, the third rotating rod 33 is limited by the opening and closing member 351 and cannot rotate to the circuit breaker closing position 311, so that the circuit breaker is at the opening and closing position at all times, and keeps the opening and closing state, where the counterweight 354 is disposed on the opening and closing member 351, so that under the action of the counterweight 354, the center of gravity of the opening and closing member 351 is close to the position of the counterweight 354, therefore, the automatic rotation is performed under the action of gravity, the rotation direction is that the opening and closing member 351 rotates towards the direction of the movement track far away from the matching member 352, so that the limit release of the matching member 352 is realized, wherein the lifting rotating plate 353 is located below the weight member 354 and rotatably installed on the cabinet body 1, the lifting rotating plate 353 and the first rotating rod 31 are in linkage arrangement, in addition, the upper end of the lifting rotating plate 353 is provided with a lifting cambered surface 3531 for pushing the weight member 354 upwards, wherein when the first rotating rod 31 is located at the closing position 311 and the second opening position 313, the weight member 354 is separated from the lifting cambered surface 3531, the opening and closing member 351 and the matching member 352 are in dislocation arrangement, and when the first rotating rod 31 is located at the first opening position 312, the weight member 354 abuts against the lifting cambered surface 3531, and the opening and closing member 351 is located on the rotation track of the matching member 352, as shown in fig. 10.
Therefore, the circuit breaker opening and closing control assembly of the present embodiment specifically adopts the rotation of the first rotating rod 31 and the rotation of the lifting rotating plate 353, so that when the first rotating rod 31 is located at the closing position 311 and the second opening position 313, the counterweight member 354 is separated from the support of the lifting cambered surface 3531 to realize the rotation of the opening and closing member 351 under the action of gravity, so that the opening and closing member 351 is rotated to be separated from the motion track of the mating member 352, and therefore, the circuit breaker can be opened and closed through the rotation of the third rotating rod 33, that is, when the isolating switch or the grounding switch is closed, the circuit breaker can be opened and closed, in addition, when the first rotating rod 31 is located at the first opening position 312, the counterweight member 354 is supported by the lifting cambered surface 3531 to realize the ascending of the counterweight member 354 and drive the rotation of the opening and closing member 351, so that the opening and closing member 351 is located at the motion track of the mating member 352, and therefore, the third rotating rod 33 is limited by the member 351 and cannot rotate to the closing position 311 of the circuit breaker, so that the circuit breaker is in the opening and closing state.
Preferably, as shown in fig. 12, the upper end of the weight member 354 in this embodiment is hinged to the opening and closing member 351, in addition, the cabinet body 1 is provided with a guiding insertion rod 38, the weight member 354 is provided with a guiding insertion hole 3541 extending vertically, and the guiding insertion rod 38 is inserted into the guiding insertion hole 3541, where the axial direction of the guiding insertion rod 38, the hinge axial direction of the weight member 354 relative to the opening and closing member 351, and the hinge axial direction of the opening and closing member 351 relative to the cabinet body 1 are parallel to each other, so that the lower end of the weight member 354 swings horizontally by being hinged to the opening and closing member 351 and by the cooperation of the guiding insertion rod 38 and the guiding insertion hole 3541 in the rotation process of the opening and closing member 351, and thus the cooperation with the lifting cambered surface 3531 is more accurate.
Preferably, the isolating and grounding linkage assembly in this embodiment includes a middle rotating rod 341, the first rotating rod 31, the second rotating rod 32 and the middle rotating rod 341 are axially disposed in parallel (all disposed along the front-rear direction), where the middle rotating rod 341 is located between the first rotating rod 31 and the second rotating rod 32 and is rotatably mounted on the cabinet body 1 along the circumferential direction, in addition, a first hinge connecting rod 342 is disposed between the first rotating rod 31 and the middle rotating rod 341, a second hinge connecting rod 343 is disposed between the second rotating rod 32 and the middle rotating rod 341, and the lifting rotating plate 353 is fixedly mounted on the middle rotating rod 341, so that the first rotating rod 31 and the second rotating rod 32 are linked by adopting the middle rotating rod 341, the first hinge connecting rod 342 and the second hinge connecting rod 343 to bridge, the structure is simple and the linkage effect is good, and the first rotating rod 31 and the second rotating rod 32 are adapted to have a certain distance, in addition, the lifting plate 353 is disposed on the middle rotating rod 341, so that the lifting plate is disposed on the middle rotating body 1 is more towards the other central position of the central control assembly, and the lifting plate 353 is more close to the central control assembly.
Preferably, the axial direction of the guide insert 38 and the axial direction of the intermediate rotating shaft 341 are parallel to each other in this embodiment, so that the engagement of the weight 354 with the lifting rotating plate 353 is more stable, and thus, the thickness of the weight 354 and the lifting rotating plate 353 is set smaller, thereby reducing the overall volume.
In addition, in this embodiment, the cylinder 4 for opening the circuit breaker is disposed on the cabinet 1, and the mating member 352 is located on the motion track of the output shaft of the cylinder 4, so that the circuit breaker is opened by driving the cylinder 4, thereby preventing a safety problem from occurring at the moment when the circuit breaker is turned on, and improving safety.
The linkage structure of the third rotating rod 33 and the second limiting member 37 (the linkage connection of the actual device with other functions results in complex structure), wherein the second limiting member 37 is rotatably installed on the cabinet body 1, and the linkage structure of the third rotating rod 33 and the second limiting member 37 can be simply linked by adopting the modes of program control, mechanical linkage (such as gears, connecting rods, etc.), and the like, or can be linked by adopting complex machinery or program control, which is not specifically disclosed herein, and is a technology which can be realized by those skilled in the art.
As shown in fig. 13-15, the door interlock 2 in this embodiment includes a sliding frame 21, the sliding frame 21 is slidably mounted on the cabinet 1 (the cabinet 1 is slidably mounted by inserting the subsequent safety insert rod 212), the sliding frame 21 is provided with a door lifting handle 211, the safety insert rod 212 and a safety baffle 213 (the number of the safety baffle 213 is two, and the safety baffle 213 corresponds to the first limit piece 36 and the second limit piece 37 respectively), the safety door 13 is located on the motion track of the safety insert rod 212, wherein the motion track of the first limit piece 36 and the second limit piece 37 is partially overlapped with the motion track of the safety baffle 213, and when at least one of the first limit piece 36 and the second limit piece 37 is located on the sliding track of the safety baffle 213, the safety insert rod 212 is inserted and connected with the safety door 13, and the door interlock 2 is locked by inserting the safety insert rod 212, and the motion track of the safety baffle 213 is overlapped with the first limit piece 36 and the second limit piece 37, so that the door interlock 2 can be stably opened and closed by sliding the motion track of the first limit piece 36 and the second limit piece 37, and the door interlock can be stably opened and closed by the motion track of the safety door interlock 13 and the second limit piece 37.
In addition, the door interlock 2 in this embodiment further includes a limit stop 22 and a limit spring 23, where the limit stop 22 is slidably installed in the cabinet body 1 along the sliding direction of the vertical sliding frame 21 in an inserting manner and is located between the sliding frame 21 and the safety door 13, where the motion track of the limit stop 22 is partially overlapped with the motion track of the safety insert rod 212, where the limit spring 23 is a tension spring, one end of the limit spring 23 is hooked to the limit stop 22 and the other end is hooked to the cabinet body 1 to implement installation, and when the limit spring 23 is in a stretched state, the limit stop 22 can be driven to move toward a position overlapping with the motion track of the safety insert rod 212, in addition, the limit stop 22 is provided with a door locking push piece 221, and the door locking push piece 221 is located at one side of the safety door 13 toward the closed cable chamber 12, so that when the safety door 13 closes the cable chamber 12, the door push piece 221 is pushed by the safety door 13 to move away from the position overlapping with the motion track of the safety insert rod 212.
Therefore, when the safety door 13 needs to be opened, the sliding frame 21 is controlled to move upwards through the door lifting handle 211, and in the upward movement process, the safety plunger 212 is sequentially moved upwards away from the lower door and the limit catch 22, and finally, the safety plunger 212 moves upwards to the first limit piece 36 and the second limit piece 37 under the action of the limit catch 22, at this time, the limit of the lower door is released by the safety plunger 212, so that the cable chamber 12 can be opened by driving the safety door 13, after the cable chamber 12 is opened by the safety door 13, the function of the locking plunger 221 is released by the safety door 13, so that the limit catch 22 is driven to move to the movement track of the safety plunger 212 under the reset action of the limit spring 23, the state is converted into the state of fig. 15, therefore, after the control of the door lifting handle 211 is released, the safety plunger 22 can be prevented from falling down by the sliding frame 21 under the action of the limit catch 22, the safety plunger 213 is positioned on the movement track of the first limit piece 36 and the second limit piece 37, the safety plunger 213 is ensured to be stably and effectively opened by driving the safety plunger 13, the cable chamber 12 is kept in the first limit piece 36 and the second limit piece 37, the cable chamber is completely closed by the release of the release switch 12, the cable chamber is completely separated from the position-separated from the cable chamber 12, the opening position of the cable chamber is completely closed by the release plunger 12, the release plunger 12 is completely is prevented from moving the cable chamber 12, and the movement track is completely closed by the cable chamber 12, and the release door is completely is prevented from moving the door 12, and the movement of the door is completely was closed by the release door 12, and the release door was closed, therefore, the sliding frame 21 can move and finally move to the insertion safety door 13 to limit the safety door 13, so that the safety door 13 is ensured to stably and effectively close the cable chamber 12, and the state of fig. 15 is changed into the state of fig. 14, and the control of the control element is performed again, so that the high-voltage line in the cable chamber 12 can be effectively prevented from being relieved by a wiring person, and the safety of operation is ensured.
Preferably, the sliding direction of the sliding frame 21 in the present embodiment is arranged vertically, so that the sliding frame 21 can fall back freely under the action of gravity to ensure the stability of locking.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a high-voltage ring network cabinet of operation safety, includes the cabinet body, the cabinet body is provided with the operation room and the cable chamber of mutual isolation, be provided with control element in the operation room, the cabinet body is located cable chamber one side and is provided with the emergency exit that is used for opening and close cable chamber, its characterized in that: the control element comprises a breaker, a disconnecting switch and a grounding switch, a door interlock for controlling the opening and closing of a safety door is arranged on the cabinet body, a linkage mechanism for linkage connection of the breaker, the disconnecting switch and the grounding switch is arranged in the operation chamber, the door interlock and the movement track of the linkage mechanism are partially overlapped, when the breaker is in a closing state, the disconnecting switch is in a separating brake state, and the grounding switch is in a closing state, The linkage mechanism is arranged outside the staggered arrangement of the door interlock, the linkage mechanism is positioned on the motion track of the door interlock in the combined state of other circuit breakers, isolating switches and grounding switches, the linkage mechanism comprises a first rotating rod, a second rotating rod, a third rotating rod, an isolating grounding linkage assembly and a circuit breaker opening and closing control assembly, the first rotating rod, the second rotating rod and the third rotating rod are all arranged on the cabinet body in a rotating way along the circumferential direction, the first rotating rod is used for controlling the opening and closing of the grounding switches, the second rotating rod is used for controlling the opening and closing of the isolating switches, the third rotating rod is used for controlling the opening and closing of the circuit breakers, the isolating grounding linkage assembly is used for connecting the first rotating rod and the second rotating rod in a linkage way, The cabinet body is provided with a closing position, a first opening position and a second opening position on a rotating track of the first rotating rod, when the first rotating rod is positioned at the closing position, the grounding switch is in a closing state, the isolating switch is in an opening state, when the first rotating rod is positioned at the first opening position, the grounding switch is in an opening state, the isolating switch is in an opening state, when the first rotating rod is positioned at the second opening position, the grounding switch is in an opening state, the isolating switch is in a closing state, the circuit breaker opening and closing control assembly is used for limiting the closing of the circuit breaker when the first rotating rod is positioned at the closing position and is used for realizing the opening and closing of the circuit breaker when the first rotating rod is positioned at the first opening position and for switching the gear of the first rotating rod cannot be carried out under the closing state of the circuit breaker, The first rotating rod or the second rotating rod is provided with a first limiting part, when the first rotating rod is positioned at the second opening position, the first limiting part is positioned on the movement track of the door interlock, the linkage mechanism further comprises a second limiting part which is in linkage connection with the third rotating rod, when the circuit breaker is in the opening state, the second limiting part is positioned on the movement track of the door interlock, the circuit breaker opening and closing control assembly comprises an opening and closing part, a matching part, a lifting rotating plate and a counterweight part, the opening and closing part is hinged to the cabinet body, the matching part is fixedly arranged on the third rotating rod, the rotation track of the opening and closing part and the rotation track of the matching part are partially overlapped, the counterweight part is arranged on the opening and closing part, The lifting rotating plate is positioned below the counterweight, and is rotatably mounted on the cabinet body, the lifting rotating plate and the first rotating rod are in linkage arrangement, the upper end of the lifting rotating plate is provided with a lifting cambered surface for pushing the counterweight upwards, when the first rotating rod is positioned at the closing position and the second opening position, the counterweight is separated from the lifting cambered surface, the opening and closing part and the matching part are in dislocation arrangement, when the first rotating rod is positioned at the first opening position, the counterweight is abutted against the lifting cambered surface, the opening and closing part is positioned on the rotating track of the matching part, the door interlock comprises a sliding frame, the sliding frame is slidably mounted on the cabinet body, the sliding frame is provided with a lifting door handle, a safety inserting rod and a safety baffle, the safety door is located on the motion track of the safety inserting rod, the motion track of the first limiting piece and the motion track of the second limiting piece are partially overlapped with the motion track of the safety baffle, and when at least one of the first limiting piece and the second limiting piece is located on the sliding track of the safety baffle, the safety inserting rod is inserted and connected with the safety door.
2. An operationally safe high voltage ring network cabinet in accordance with claim 1, characterized by: the counter weight piece articulates in opening and close the piece, and the articulated axial of counter weight piece relative opening and close the articulated axial of the relative cabinet body of piece is parallel to each other, the cabinet body is provided with the direction inserted bar, the direction jack along vertical extension has been seted up to the counter weight piece, the direction inserted bar inserts and locates in the direction jack.
3. An operationally safe high voltage ring network cabinet in accordance with claim 2, characterized by: the isolation grounding linkage assembly comprises a middle rotating rod, the first rotating rod, the second rotating rod and the middle rotating rod are axially arranged in parallel, the middle rotating rod is located between the first rotating rod and the second rotating rod and is installed on the cabinet body in a circumferential rotation mode, a first hinge connecting rod is arranged between the first rotating rod and the middle rotating rod, a second hinge connecting rod is arranged between the second rotating rod and the middle rotating rod, and the lifting rotating plate is fixedly installed on the middle rotating rod.
4. A high voltage ring network cabinet safe for operation according to claim 3, characterized in that: the axial direction of the guide inserted link is parallel to the axial direction of the middle rotating link, and the hinging axial direction of the opening and closing part relative to the cabinet body is parallel to the axial direction of the middle rotating link.
5. An operationally safe high voltage ring network cabinet in accordance with claim 4, characterized by: the cabinet body is provided with a cylinder for opening the circuit breaker, and the matching piece is positioned on the motion track of the output shaft of the cylinder.
6. An operationally safe high voltage ring network cabinet in accordance with claim 5, characterized by: the door interlock is characterized by further comprising a limiting baffle and a limiting spring, wherein the limiting baffle is installed on the cabinet body in a sliding mode along the sliding direction of the vertical sliding frame and located between the sliding frame and the safety door, the movement track of the limiting baffle is partially overlapped with the movement track of the safety inserting rod, the limiting spring is used for driving the limiting baffle to move towards the overlapping position of the movement track of the safety inserting rod, the limiting baffle is provided with a door locking pushing piece, and the door locking pushing piece is used for being pushed by the safety door to enable the limiting baffle to move towards the overlapping position far away from the movement track of the safety inserting rod when the safety door closes the cable chamber.
7. An operationally safe high voltage ring network cabinet in accordance with claim 6, characterized by: the sliding direction of the sliding frame is arranged vertically.
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| CN202111150679.9A CN113745982B (en) | 2021-09-29 | 2021-09-29 | High-voltage ring network cabinet safe to operate |
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| CN202111150679.9A CN113745982B (en) | 2021-09-29 | 2021-09-29 | High-voltage ring network cabinet safe to operate |
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| CN113745982B true CN113745982B (en) | 2024-07-26 |
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| CN116825558B (en) * | 2023-08-30 | 2023-12-01 | 福建德普乐能源科技有限公司 | Interlocking device for high-voltage switch equipment mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216085718U (en) * | 2021-09-29 | 2022-03-18 | 黄华集团有限公司 | High-voltage ring main unit safe in operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB460971A (en) * | 1935-08-06 | 1937-02-08 | Reyrolle A & Co Ltd | Improvements in or relating to electric circuit-breakers |
| CN104409273B (en) * | 2014-10-29 | 2016-07-06 | 浙江道笃智能开关有限公司 | Pole type High-Voltage Electrical Appliances cubicle switch |
| CN206931505U (en) * | 2017-08-01 | 2018-01-26 | 青岛特锐德电气股份有限公司 | A kind of switch cubicle with interlock |
| CN107453269A (en) * | 2017-08-23 | 2017-12-08 | 中科电力装备集团有限公司 | A kind of tri-station isolating switch and breaker |
| CN208538721U (en) * | 2018-08-28 | 2019-02-22 | 珠海思玛特电气有限公司 | The lower anti-interlock of breaker five is isolated with tight play in switchgear in type |
| CN109449816A (en) * | 2018-10-30 | 2019-03-08 | 深圳供电局有限公司 | Compact air insulation switch cabinet |
| CN112951625A (en) * | 2021-01-29 | 2021-06-11 | 黄华集团有限公司 | Compact modular switch operating mechanism |
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| CN216085718U (en) * | 2021-09-29 | 2022-03-18 | 黄华集团有限公司 | High-voltage ring main unit safe in operation |
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