CN113745982A - High-voltage ring main unit safe in operation - Google Patents
High-voltage ring main unit safe in operation Download PDFInfo
- Publication number
- CN113745982A CN113745982A CN202111150679.9A CN202111150679A CN113745982A CN 113745982 A CN113745982 A CN 113745982A CN 202111150679 A CN202111150679 A CN 202111150679A CN 113745982 A CN113745982 A CN 113745982A
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- CN
- China
- Prior art keywords
- dwang
- opening
- rotating rod
- circuit breaker
- cabinet body
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- 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.)
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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
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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
- 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
Abstract
The invention relates to a high-voltage ring main unit 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, a safety door is arranged on one side of the cabinet body, the control element comprises a circuit breaker, an isolating switch and a grounding switch, a door interlock is arranged on the cabinet body, a linkage mechanism is arranged in the operation chamber, the door interlock and the movement track of the linkage mechanism are partially overlapped, and the linkage mechanism is positioned on the movement track of the door interlock under the combined state of the rest circuit breakers, the isolating switches and the grounding switches except that the circuit breaker is in a closing state, the isolating switch is in a breaking state and the grounding switch is in a closing state. By adopting the scheme, the high-voltage ring main unit with safe operation is provided, wherein the safety door can be opened only when the breaker is in a closing state, the isolating switch is in a breaking state and the grounding switch is in a closing state, so that the safe opening of the used cable chamber is ensured.
Description
Technical Field
The invention relates to a high-voltage ring main unit with safe operation.
Background
The high-voltage ring main unit is used for improving the power supply reliability, so that a user can obtain power supplies from two directions, and a power supply network is usually connected into a ring. This power supply mode is referred to as ring network power supply for short. In an alternating current 10KV power distribution system of ports, high-rise buildings and the like, 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 because of small load capacity.
Wherein, high-voltage ring main unit includes control element such as control room and cable chamber usually, sets up circuit breaker, earthing switch, isolator in the control room usually, and then arrange a large amount of high-tension lines that need not the operation in the cable chamber, and in addition, the cable chamber need carry out the setting of emergency exit for when circuit work, the emergency exit effectively seals the cable chamber and prevents to contact the indoor high-tension line of cable, guarantees to make the security.
The problem that current high-tension loop-network cabinets exist lies in: the existing safety door adopts independent components such as a lock to open and close the cable chamber, so that the electric shock danger is easy to occur due to the fact that the cable chamber is opened under the condition that a circuit is not cut off.
Therefore, how to ensure that the circuit is effectively cut off to prevent the danger when the cable chamber is opened becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a high-voltage ring main unit which can ensure safe operation by opening a safety door only when a breaker is in a closing state, an isolating switch is in an opening state and an earthing switch is in a closing state so as to ensure safe opening of a used cable chamber.
In order to achieve the purpose, the invention provides the following technical scheme: the intelligent cabinet comprises a cabinet body, the cabinet body is provided with the control chamber and the cable chamber of mutual isolation, be provided with controlling element in the control chamber, the cabinet body is located cable chamber one side and is provided with the emergency exit that is used for opening and close the cable chamber, its characterized in that: the control element includes circuit breaker, isolator and earthing switch, be provided with the door interlocking who is used for controlling the emergency exit to open and close on the cabinet body, be provided with the link gear of linkage connection circuit breaker, isolator and earthing switch in the control chamber, the door interlocking is partial coincidence setting with link gear's movement track, except that the circuit breaker is in combined floodgate state and isolator is in separating brake state and earthing switch is when combined floodgate state, link gear and door interlocking are the dislocation set, under all the other circuit breaker, isolator, earthing switch's the combined state, link gear all is located the movement track of door interlocking.
The invention is further configured to: the linkage mechanism comprises a first rotating rod, a second rotating rod, a third rotating rod, an isolation 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 in the cabinet body along the circumferential rotation, 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 isolation switch, the third rotating rod is used for controlling the opening and closing of the circuit breaker, the isolation grounding linkage assembly is used for connecting the first rotating rod and the second rotating rod in a linkage manner, the cabinet body is provided with a closing position, a first breaking position and a second breaking position on the rotating track of the first rotating rod, when the first rotating rod is positioned at the closing position, the grounding switch is positioned in the closing state, and the isolation switch is positioned in the breaking state, when first dwang is located the second separating brake position, earthing switch is in the separating brake state, and isolator is in combined floodgate state, circuit breaker open and close control subassembly is used for limiting the combined floodgate of circuit breaker when first dwang is located the combined floodgate position and is located the second separating brake position and is used for realizing opening and close of circuit breaker and being used for the switching that first dwang can't carry out the gear under the circuit breaker is in combined floodgate state when first dwang, be provided with first locating part on first dwang or the second dwang, when first dwang is located the second separating brake position, first locating part is located the motion trail of door interlocking, link gear still includes the second locating part of being connected with the linkage of third dwang, when the circuit breaker is in the separating brake state, the second locating part is located the motion trail of door interlocking.
The invention is further configured to: the circuit breaker on-off control subassembly is including opening and close piece, fitting piece, lifting commentaries on classics board, counterweight, opening and close piece articulates in the cabinet body, fitting piece fixed mounting is in the third dwang, the rotation orbit of opening and close piece is partial overlap setting with the rotation orbit of fitting piece, counterweight sets up in opening and close piece, the lifting commentaries on classics board is located the counterweight below to rotate and install in the cabinet body, and the lifting commentaries on classics board is the linkage setting with first dwang, lifting commentaries on classics board upper end is provided with and is used for the lifting cambered surface that promotes the counterweight up, and when first dwang is located closing position and second split brake position, counterweight breaks away from the lifting cambered surface, and opening and close piece and fitting piece are the dislocation set, and when first dwang is located first split position, counterweight and lifting cambered surface offset, and opening and close piece is located the rotation orbit of fitting piece.
The invention is further configured to: the counter weight piece is hinged to the opening and closing piece, the hinged axial direction of the counter weight piece relative to the opening and closing piece is parallel to the hinged axial direction of the opening and closing piece relative to the cabinet body, the cabinet body is provided with a guide insertion rod, the counter weight piece is provided with a guide insertion hole extending vertically, and the guide insertion rod is inserted into the guide insertion hole.
The invention is further configured to: keep apart ground connection linkage subassembly includes middle dwang, the axial of first dwang, second dwang, middle dwang is mutual parallel arrangement, middle dwang is located between first dwang and the second dwang, and installs in the cabinet body along circumferential direction, be provided with first articulated connecting rod between first dwang and the middle dwang, be provided with the articulated connecting rod of second between second dwang and the middle dwang, board fixed mounting is changeed in the dwang in the middle of the lifting.
The invention is further configured to: the axial direction of the guide insertion rod is parallel to the axial direction of the middle rotating rod, and the hinged axial direction of the opening and closing piece relative to the cabinet body is parallel to the axial direction of the middle rotating rod.
The invention is further configured to: the cabinet body is provided with a cylinder for opening the circuit breaker, and the fitting piece is located on the motion trail of the output shaft of the cylinder.
The invention is further configured to: the door interlocking is including the slip frame, the slip frame slides and installs in the cabinet body, be provided with on the slip frame and carry a door handle, safe inserted bar and safety shield, the emergency exit is located the movement track of safe inserted bar, the movement track of first locating part and second locating part is the partial overlapping setting with the movement track of safety shield, and when at least one in first locating part and the second locating part was located the movement track of safety shield, the safety inserted bar was inserted and is established the connection emergency exit.
The invention is further configured to: the door interlocking is still including spacing separation blade and spacing spring, spacing separation blade slides along the direction of sliding of vertical sliding frame and installs in the cabinet body, and is located between sliding frame and the emergency exit, the movement track of spacing separation blade is the part with the movement track of safety inserted bar and overlaps, spacing spring is used for driving spacing separation blade towards the movement of the overlapping department of movement track with safety inserted bar, spacing separation blade is provided with the lock door push jack, and the lock door push jack is used for when the emergency exit closes the cable chamber, receives the emergency exit promotion and makes spacing separation blade towards keep away from with the movement track of safety inserted bar overlapping department motion.
The invention is further configured to: the sliding direction of the sliding frame is vertically arranged.
By adopting the technical scheme, the circuit breaker, the isolating switch and the grounding switch realize linkage connection through the linkage mechanism, and only when the circuit breaker is in a closing state, the isolating 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 staggered manner, so that the door interlock can release the locking of the safety door through movement, the cable chamber is opened by the movable safety door, at the moment, not only is the power supply of the power supply cut off to ensure that the cable in the cable chamber cannot generate high-voltage load to ensure the safety because the isolating switch is in the separating state, but also the circuit breaker and the grounding switch are in the closing state, the cable in the cable chamber is grounded through the circuit breaker and the grounding switch in sequence, the residual current in the cable is led into the ground to realize zero clearing of the voltage, because the separating switch, the grounding switch, When the circuit breaker is opened, although the whole cabinet body is not electrified, originally, can open the cable chamber and overhaul, but will not be qualified for the next round of competitions the residual charge ground connection of end circuit, the residual charge contact electric shock probably appears, only will keep apart sword ground connection, close the circuit breaker again, will be qualified for the next round of competitions the return circuit switch-on, and then make whole circuit ground connection, accomplish real safe and reliable, the vacuum bubble switch-on ground connection return circuit that uses the circuit breaker, even put through the fault current, also can reliably ground connection, reliable ground connection has also further been guaranteed, prevent because remaining electric current causes operating personnel's electric shock emergence danger in the cable, thereby play efficient security.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
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 circuit schematic of an embodiment of the present invention;
FIG. 5 is an assembly view of the isolated ground linkage assembly, the first rotating rod, and the second rotating rod portion of the embodiment of the present invention;
FIG. 6 is an assembly view of the circuit breaker open and close control assembly, third lever portion of the present invention in accordance with an embodiment of the present invention;
FIG. 7 is a state diagram of the circuit breaker open and close control assembly, third lever portion in accordance with an embodiment of the present invention;
FIG. 8 is a state diagram of the circuit breaker open and close control assembly, third lever portion in accordance with 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 in FIG. 8;
FIG. 12 is an enlarged view of E in FIG. 7;
FIG. 13 is an assembly view of the door interlock portion of the present invention;
fig. 14 is a schematic view of a safety insert locking a safety door according to an embodiment of the present invention;
fig. 15 is a schematic view of an emergency gate opening cable compartment according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the present invention discloses a high voltage ring main unit with safe operation, which comprises a main body 1, wherein the main body 1 is provided with an operation chamber 11 and a cable chamber 12 which are isolated from each other, wherein the cable chamber 12 is located below the operation chamber 11, a control element is arranged in the operation chamber 11, a safety door 13 for opening and closing the cable chamber 12 is arranged on the main body 1 at the front side of the cable chamber 12, wherein the control element comprises a circuit breaker, a disconnecting switch and a grounding switch, in addition, a door interlock 2 is arranged on the main body 1, so that the safety door 13 is locked on the main body 1 by controlling the movement of the door interlock 2 to 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 by controlling the safety door 13, in addition, a linkage mechanism 3 for linkage connection of the circuit breaker, the disconnecting switch and the grounding switch is arranged in the operation chamber 11, the movement tracks of the door interlock 2 and the linkage mechanism 3 are partially overlapped, so that when the linkage mechanism 3 is located on the movement track of the door interlock 2, the door interlock 2 is limited in movement and cannot release the locking of the safety door 13, and when the movement tracks of the linkage mechanism 3 and the door interlock 2 are staggered, the door interlock 2 can move to release the locking of the safety door 13, wherein 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, the linkage mechanism 3 and the door interlock 2 are arranged in a staggered mode, and the linkage mechanism 3 is located on the movement track of the door interlock 2 under the combined state of other circuit breakers, disconnecting switches and grounding switches.
Therefore, the circuit breaker, the disconnecting switch and the grounding switch are in linkage connection through the linkage mechanism 3, and only when the circuit breaker is in a closing state, the disconnecting switch is in a breaking state and the grounding switch is in a closing state, the linkage mechanism 3 and the door interlock 2 are arranged in a staggered manner, so that the door interlock 2 can release the locking of the safety door 13 through movement, the safety door 13 is moved to open the cable chamber 12, at the moment, the power supply of a power supply is cut off to ensure that the cable in the cable chamber 12 cannot generate high-voltage load to ensure the safety because the disconnecting switch is in the breaking state, and the circuit breaker and the grounding switch are in the closing state to realize that the cable in the cable chamber 12 is grounded through the circuit breaker and the grounding switch in sequence, thereby leading the residual current in the cable into the ground to realize the zero clearing of the voltage, and preventing the electric shock of an operator caused by the residual current in the cable from causing danger, thereby achieving high-efficiency safety.
It should be noted that the relative position between the operation chamber 11 and the cable chamber 12 is not limited to the above-described position of the cable chamber 12 below the operation chamber 11, and other reasonable relative positions may be provided, and the corresponding safety door 13 is not limited to the position provided in front of the cable chamber 12, and may be provided in other reasonable relative positions.
It should be noted that the linkage mechanism 3 may be implemented by program control, mechanical linkage, or the like. In addition, the present invention is not limited to the above embodiments, and various modifications and changes can be made without departing from the scope of the present invention.
As shown in fig. 5-9, in this embodiment, the linkage mechanism 3 includes a first rotating rod 31, a second rotating rod 32, a third rotating rod 33, an isolation grounding linkage assembly, and a circuit breaker opening and closing control assembly, wherein the first rotating rod 31, the second rotating rod 32, and the third rotating rod 33 are all installed in the cabinet 1 along the circumferential rotation, and can be installed in a rotating manner by using bearings, etc., wherein the first rotating rod 31 is used to control the grounding switch to open and close, the second rotating rod 32 is used to control the isolation switch to open and close, and the third rotating rod 33 is used to control the circuit breaker to open and close, wherein the isolation grounding linkage assembly is used to connect the first rotating rod 31 and the second rotating rod 32 in a linkage manner, and the cabinet 1 is provided with a closing position 311, a first switching position 312, and a second switching position 313 on the rotating track of the first rotating rod 31, so that when the first rotating rod 31 is located at the closing position 311, the earthing switch is in a closing state, the disconnecting switch is in a breaking state, when the first rotating rod 31 is located at the first breaking position 312, the earthing switch is in a breaking state, and the disconnecting switch is in a breaking state, when the first rotating rod 31 is located at the second breaking position 313, the earthing switch is in a breaking state, and the disconnecting switch is in a closing state, wherein the circuit breaker opening and closing control assembly is used for limiting the closing of the circuit breaker when the first rotating rod 31 is located at the closing position 311 and at the second breaking position 313, and is used for realizing the opening and closing of the circuit breaker when the first rotating rod 31 is located at the first breaking position 312 and is used for switching gears of the first rotating rod 31 under the closing state, in addition, a first limiting member 36 is arranged on the first rotating rod 31 or the second rotating rod 32 (in this embodiment, the first limiting member 36 is arranged 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, and in addition, the linkage mechanism 3 further includes a second limiting member 37 in linkage connection with the third rotating rod 33, 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.
Therefore, 1, the earthing switch and the disconnecting switch are limited by the arrangement of the isolating and earthing linkage assembly, so that the disconnecting switch and the earthing switch only have 3 combined states (2 x2=4 states without linkage), and the 3 states are respectively 1 for earthing switch closing and disconnecting switch opening; 2. the grounding switch is opened, and the isolating switch is opened; 3. the grounding switch is switched off, and the isolating switch is switched on. The grounding switch is prevented from being switched on, and meanwhile, the state (circuit short circuit) of the switching on of the disconnecting switch is isolated, so that the protective effect is achieved. 2. The first limiting part 36 is arranged to ensure that the door interlock 2 is limited and cannot be opened when the disconnecting switch is in a closing state. 3. And then the circuit breaker is matched with the circuit breaker opening and closing control assembly, the circuit breaker can be opened and closed only under the condition that the grounding switch or the isolating switch is in a closing state, the state of the isolating switch and the grounding switch is kept due to the fact that the first rotating rod 31 cannot rotate, the circuit is conducted more safely due to the fact that the circuit breaker has the arc extinguishing characteristic, and the effect of protecting the grounding switch and the isolating switch is achieved. 4. The second limit part 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. To sum up, alright realize under the cooperation of isolation ground connection linkage subassembly, circuit breaker on-off control subassembly, first locating part 36 and second locating part 37, realize that when the circuit breaker is in combined state and isolator is in separating brake state and earthing switch is in combined state, link gear 3 and door interlock 2 are the dislocation set, realize carrying out opening of emergency exit 13 through door interlock 2, and under all the other circuit breakers, isolator, earthing switch's combined state, link gear 3 all is located door interlock 2's movement track, make door interlock 2 limited unable emergency exit 13 of opening, guarantee the security of opening the cable chamber, the reliable mistake interlock design of preventing of cabinet body 1, ensure that each switch and access door press "five prevent" program design, ensure that the switch can not carry out the maloperation.
Under the working state of the circuit, the disconnecting switch is in a closing state, the breaker is in a closing state, the grounding switch is in a breaking state, if the emergency exit 13 needs to be opened, the breaker is firstly controlled to be opened, then the first rotating rod 31 is rotated to the first breaking position 312 from the second breaking position 313, then the first rotating rod is rotated to the closing position 311, finally the breaker is closed to complete circuit conversion, the limit of the linkage mechanism 3 on the door interlock 2 is released, the door interlock 2 releases the locking of the emergency exit 13, the emergency exit 13 can be opened, and the process is a specific process from the circuit working to the emergency exit 13 opening.
It should be noted that the isolated grounding linkage assembly can realize the linkage between the first rotating rod 31 and the second rotating rod 32 by adopting a program control, a mechanical linkage, and the like, so as to realize the above situation. Similarly, the circuit breaker opening and closing control assembly can adopt the modes of program control, mechanical linkage and the like to realize the conditions. In addition, the present invention is not limited to the above embodiments, and various modifications and changes can be made without departing from the scope of the present invention.
As shown in fig. 10 to 11, the circuit breaker on-off control assembly in this embodiment includes an opening/closing member 351, a mating member 352, a lifting rotating plate 353, and a weight member 354, wherein the opening/closing member 351 is hinged to the cabinet 1, the mating member 352 is fixedly mounted on the third rotating rod 33 by means of bolts, etc., and a rotating track of the opening/closing member 351 and a rotating track of the mating member 352 are partially overlapped, such that when the opening/closing member 351 is located on the rotating track of the mating member 352, the third rotating rod 33 is limited by the opening/closing member 351 and cannot rotate to the circuit breaker on-off position 311, such that the circuit breaker is constantly in the off position, and the off state is maintained, wherein the weight member 354 is disposed on the opening/closing member 351, such that under the action of the weight member 354, a center of gravity of the opening/closing member 351 is close to a position of the weight member 354, and thus automatically rotates under the action of gravity, and the rotation direction is that the opening and closing member 351 rotates towards the direction of the motion track far away from the mating member 352, so as to realize the limit release of the mating member 352, wherein the lifting rotating plate 353 is located below the counterweight member 354 and is rotatably installed in the cabinet body 1, and the lifting rotating plate 353 and the first rotating rod 31 are in linkage arrangement, in addition, a lifting arc surface 3531 for pushing the counterweight member 354 upwards is arranged at the upper end of the lifting rotating plate 353, as shown in fig. 10, when the first rotating rod 31 is located at the closing position 311 and the second closing position 313, the counterweight member 354 is separated from the lifting arc surface 3531, and the opening and closing member 351 and the mating member 352 are in staggered arrangement, as shown in fig. 11, when the first rotating rod 31 is located at the first closing position 312, the counterweight member 354 abuts against the lifting arc surface 3531, and the opening and the closing member 351 is located on the rotation track of the mating member 352.
Therefore, the circuit breaker on-off control assembly of this embodiment specifically uses the rotation of the first rotating rod 31 and the rotation of the lifting rotating plate 353 in linkage, so that when the first rotating rod 31 is located at the switch-on position 311 and the second switch-off position 313, the weight member 354 is separated from the support of the lifting arc 3531 and the rotation of the opening and closing member 351 is realized under the action of gravity, so that the opening and closing member 351 is rotated and separated from the movement track of the mating member 352, and therefore, the circuit breaker can be turned on and off by the rotation of the third rotating rod 33, that is, when the disconnecting switch or the grounding switch is switched on and off, in addition, when the first rotating rod 31 is located at the first switch-off position 312, the weight member 354 is supported by the lifting arc 3531 and the upward movement of the weight member 354 and drives the rotation of the opening and closing member 351, so that the opening and closing member 351 is located on the movement track of the weight mating member 352, and therefore, the third rotating rod 33 cannot be rotated to the switch-on switch-off position 311 by the limitation of the opening member 351, so that the circuit breaker is in an open state at all times.
Preferably, as shown in fig. 12, the upper end of the counterweight 354 in this embodiment is hinged to the opening and closing member 351, and the cabinet 1 is further provided with a guide insertion rod 38, the counterweight 354 is provided with a guide insertion hole 3541 extending along the vertical direction, the guide insertion rod 38 is inserted into the guide insertion hole 3541, wherein the axial direction of the guide insertion rod 38, the hinge axial direction of the counterweight 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 1 are parallel to each other, so that the counterweight 354 is hinged to the opening and closing member 351, and the lower end of the counterweight 354 horizontally swings to a smaller extent during the rotation of the opening and closing member 351 through the cooperation of the guide insertion rod 38 and the guide insertion hole 3541, so that the cooperation with the lifting arc surface 3531 is more accurate.
Preferably, in this embodiment, the isolation grounding linkage assembly includes a middle rotating rod 341, the axial directions of the first rotating rod 31, the second rotating rod 32 and the middle rotating rod 341 are parallel to each other (all arranged along the front-back direction), wherein the middle rotating rod 341 is located between the first rotating rod 31 and the second rotating rod 32 and is installed in the cabinet 1 along the circumferential rotation, in addition, a first hinge connecting rod 342 is arranged between the first rotating rod 31 and the middle rotating rod 341, a second hinge connecting rod 343 is arranged between the second rotating rod 32 and the middle rotating rod 341, and the lifting rotating plate 353 is fixedly installed on the middle rotating rod 341, so that the middle rotating rod 341, the first hinge connecting rod 342 and the second hinge connecting rod 343 are adopted for bridging in the linkage of the first rotating rod 31 and the second rotating rod 32, the structure is simple and the linkage effect is good, and the adaptation is performed under the condition that the first rotating rod 31 and the second rotating rod 32 have a certain distance, in addition, the lifting rotating plate 353 is arranged on the middle rotating rod 341, so that the lifting rotating plate 353 is arranged at the middle position of the cabinet body 1, and therefore, other adaptive circuit breaker opening and closing control assemblies are close to each other towards the middle position of the cabinet body 1, and the structure is more concentrated.
Preferably, the axial direction of the guide insert rod 38 and the axial direction of the intermediate rotating rod 341 in the present embodiment are parallel to each other, so that the engagement between the weight member 354 and the lifting rotating plate 353 is more stable, and therefore, the thicknesses of the weight member 354 and the lifting rotating plate 353 are set to be smaller, and the overall volume is reduced.
In addition, the cabinet body 1 in this embodiment is provided with the cylinder 4 for opening the circuit breaker, and the fitting piece 352 is located on the motion trail 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 being generated at the moment when the circuit breaker is turned on, and improving safety.
In this embodiment, a linkage structure of the third rotating rod 33 and the second limiting member 37 is not specifically disclosed (the actual device is accompanied by linkage connection of other functions, which results in a complex structure), wherein the second limiting member 37 is rotatably installed in the cabinet 1, and the linkage structure of the third rotating rod 33 and the second limiting member 37 can be simply linked by program control, mechanical linkage (such as gears, connecting rods, etc.), and can also be linked by complex machinery or program control, which is not specifically disclosed herein and is a technique that 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 sliding mounting is achieved by inserting the subsequent safety insertion rod 212 into the cabinet 1), the sliding frame 21 is provided with a door lifting handle 211, a safety insertion rod 212 and a safety baffle 213 (the number of the safety baffles 213 is two, and the two safety baffles correspond to the first limiting member 36 and the second limiting member 37 respectively), and the safety door 13 is located on the movement track of the safety insertion rod 212, wherein the movement tracks of the first limiting member 36 and the second limiting member 37 and the movement track of the safety baffle 213 are partially overlapped, when at least one of the first limiting member 36 and the second limiting member 37 is located on the sliding track of the safety baffle 213, the safety insertion rod 212 is inserted into the safety door 13, so that the door interlock 2 uses the safety insertion rod 212 to insert the safety insertion rod 13 to achieve locking, the sliding limitation of the door interlock 2 is realized by overlapping the movement track of the safety baffle 213 with the first limiting member 36 and the second limiting member 37, so that the locking stability is ensured, and the door interlock 2 can be unlocked by staggering the movement track of the safety baffle 213 with the first limiting member 36 and the second limiting member 37, so that the safety door 13 can be opened and closed.
In addition, the door interlock 2 in this embodiment further includes a limiting blocking piece 22 and a limiting spring 23, wherein the limiting blocking piece 22 is slidably mounted in the cabinet 1 along the sliding direction of the vertical sliding frame 21 by means of insertion and is located between the sliding frame 21 and the safety door 13, wherein the movement track of the limiting blocking piece 22 is partially overlapped with the movement track of the safety insertion rod 212, the limiting spring 23 is a tension spring, the limiting spring 23 is mounted by hooking one end of the limiting blocking piece 22 with the other end of the limiting spring to the cabinet 1, and when the limiting spring 23 is in a stretching state, the limiting blocking piece 22 can be driven to move towards the overlapping position of the movement track of the safety insertion rod 212, in addition, the limiting blocking piece 22 is provided with a door locking pushing piece 221, the door locking pushing piece 221 is located on one side of the safety door 13 towards the closing cable chamber 12, so that when the safety door 13 closes the cable chamber 12, the door locking pushing piece 221 is pushed by the safety door 13 to make the limiting blocking piece 22 move away from the position overlapping with the movement track of the safety insertion rod 212.
Therefore, when the safety door 13 needs to be opened, the sliding frame 21 is controlled to move upwards by the door lifting handle 211, and in the process of moving upwards, the safety insert rod 212 is sequentially moved upwards away from the lower door and the limiting blocking piece 22, and finally the safety baffle 213 moves upwards to the first limiting piece 36 and the second limiting piece 37, at this time, the safety insert rod 212 releases the limiting on the lower door, so that the cable chamber 12 can be opened by driving the safety door 13, and after the safety door 13 opens the cable chamber 12, the safety door 13 releases the action on the door locking pushing piece 221, so that the limiting blocking piece 22 is driven to move to the moving track of the safety insert rod 212 under the resetting action of the limiting spring 23, the state of fig. 14 is changed into the state of fig. 15, therefore, after the control on the door lifting handle 211 is released, the sliding frame 21 can be prevented from falling under the action of the limiting piece 22, so that the safety baffle 213 is located on the moving tracks of the first limiting piece 36 and the second limiting piece 37, the first limiting part 36 and the second limiting part 37 are stably and effectively limited by the safety baffle 213, so that the closing state of the grounding switch, the opening state of the isolating switch and the closing state of the circuit breaker are kept, and in the process that wiring personnel perform circuit layout in the cable chamber 12, the grounding switch, the isolating switch and the circuit breaker cannot be operated randomly to prevent misoperation, so that the use safety of the high-voltage ring main unit is ensured, in addition, after wiring is completed, the safety door 13 is driven towards the cable chamber 12, so that the safety door 13 drives the door locking push sheet 221 to move towards the movement track far away from the safety insertion rod 212 to drive the limiting blocking sheet 22 to move in the process that the safety door 13 closes the cable chamber 12, and after the safety door 13 completely closes the cable chamber 12, the limiting blocking sheet 22 moves away from the movement track of the safety insertion rod 212, so that the sliding frame 21 can move, and finally moves until the safety door 13 is inserted to limit the safety door 13, the safety door 13 is ensured to stably and effectively close the cable chamber 12, and the state of the cable chamber 12 is changed from the state of fig. 15 to the state of fig. 14, so that the control of the control element is carried out, the high-voltage line in the cable chamber 12 can be effectively prevented from being released by a wiring person, and the operation safety is ensured.
Preferably, the sliding direction of the sliding frame 21 in this embodiment is vertically arranged, so that the sliding frame 21 can freely fall back 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 (10)
1. The utility model provides a high-tension loop-network cabinets safe in operation, includes the cabinet body, the cabinet body is provided with the control room and the cable chamber of mutual isolation, be provided with controlling element in the control room, the cabinet body is located cable chamber one side and is provided with the emergency exit that is used for opening and close the cable chamber, its characterized in that: the control element includes circuit breaker, isolator and earthing switch, be provided with the door interlocking who is used for controlling the emergency exit to open and close on the cabinet body, be provided with the link gear of linkage connection circuit breaker, isolator and earthing switch in the control chamber, the door interlocking is partial coincidence setting with link gear's movement track, except that the circuit breaker is in combined floodgate state and isolator is in separating brake state and earthing switch is when combined floodgate state, link gear and door interlocking are the dislocation set, under all the other circuit breaker, isolator, earthing switch's the combined state, link gear all is located the movement track of door interlocking.
2. The high-voltage ring main unit according to claim 1, wherein: the linkage mechanism comprises a first rotating rod, a second rotating rod, a third rotating rod, an isolation 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 in the cabinet body along the circumferential rotation, 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 isolation switch, the third rotating rod is used for controlling the opening and closing of the circuit breaker, the isolation grounding linkage assembly is used for connecting the first rotating rod and the second rotating rod in a linkage manner, the cabinet body is provided with a closing position, a first breaking position and a second breaking position on the rotating track of the first rotating rod, when the first rotating rod is positioned at the closing position, the grounding switch is positioned in the closing state, and the isolation switch is positioned in the breaking state, when first dwang is located the second separating brake position, earthing switch is in the separating brake state, and isolator is in combined floodgate state, circuit breaker open and close control subassembly is used for limiting the combined floodgate of circuit breaker when first dwang is located the combined floodgate position and is located the second separating brake position and is used for realizing opening and close of circuit breaker and being used for the switching that first dwang can't carry out the gear under the circuit breaker is in combined floodgate state when first dwang, be provided with first locating part on first dwang or the second dwang, when first dwang is located the second separating brake position, first locating part is located the motion trail of door interlocking, link gear still includes the second locating part of being connected with the linkage of third dwang, when the circuit breaker is in the separating brake state, the second locating part is located the motion trail of door interlocking.
3. The high-voltage ring main unit according to claim 2, wherein: the circuit breaker on-off control subassembly is including opening and close piece, fitting piece, lifting commentaries on classics board, counterweight, opening and close piece articulates in the cabinet body, fitting piece fixed mounting is in the third dwang, the rotation orbit of opening and close piece is partial overlap setting with the rotation orbit of fitting piece, counterweight sets up in opening and close piece, the lifting commentaries on classics board is located the counterweight below to rotate and install in the cabinet body, and the lifting commentaries on classics board is the linkage setting with first dwang, lifting commentaries on classics board upper end is provided with and is used for the lifting cambered surface that promotes the counterweight up, and when first dwang is located closing position and second split brake position, counterweight breaks away from the lifting cambered surface, and opening and close piece and fitting piece are the dislocation set, and when first dwang is located first split position, counterweight and lifting cambered surface offset, and opening and close piece is located the rotation orbit of fitting piece.
4. The high-voltage ring main unit according to claim 3, wherein: the counter weight piece is hinged to the opening and closing piece, the hinged axial direction of the counter weight piece relative to the opening and closing piece is parallel to the hinged axial direction of the opening and closing piece relative to the cabinet body, the cabinet body is provided with a guide insertion rod, the counter weight piece is provided with a guide insertion hole extending vertically, and the guide insertion rod is inserted into the guide insertion hole.
5. The high-voltage ring main unit according to claim 4, wherein: keep apart ground connection linkage subassembly includes middle dwang, the axial of first dwang, second dwang, middle dwang is mutual parallel arrangement, middle dwang is located between first dwang and the second dwang, and installs in the cabinet body along circumferential direction, be provided with first articulated connecting rod between first dwang and the middle dwang, be provided with the articulated connecting rod of second between second dwang and the middle dwang, board fixed mounting is changeed in the dwang in the middle of the lifting.
6. The high-voltage ring main unit according to claim 5, wherein: the axial direction of the guide insertion rod is parallel to the axial direction of the middle rotating rod, and the hinged axial direction of the opening and closing piece relative to the cabinet body is parallel to the axial direction of the middle rotating rod.
7. The high-voltage ring main unit according to claim 3, wherein: the cabinet body is provided with a cylinder for opening the circuit breaker, and the fitting piece is located on the motion trail of the output shaft of the cylinder.
8. The high-voltage ring main unit according to claim 1, wherein: the door interlocking is including the slip frame, the slip frame slides and installs in the cabinet body, be provided with on the slip frame and carry a door handle, safe inserted bar and safety shield, the emergency exit is located the movement track of safe inserted bar, the movement track of first locating part and second locating part is the partial overlapping setting with the movement track of safety shield, and when at least one in first locating part and the second locating part was located the movement track of safety shield, the safety inserted bar was inserted and is established the connection emergency exit.
9. The high-voltage ring main unit according to claim 8, wherein: the door interlocking is still including spacing separation blade and spacing spring, spacing separation blade slides along the direction of sliding of vertical sliding frame and installs in the cabinet body, and is located between sliding frame and the emergency exit, the movement track of spacing separation blade is the part with the movement track of safety inserted bar and overlaps, spacing spring is used for driving spacing separation blade towards the movement of the overlapping department of movement track with safety inserted bar, spacing separation blade is provided with the lock door push jack, and the lock door push jack is used for when the emergency exit closes the cable chamber, receives the emergency exit promotion and makes spacing separation blade towards keep away from with the movement track of safety inserted bar overlapping department motion.
10. The high-voltage ring main unit according to claim 8, wherein: the sliding direction of the sliding frame is vertically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111150679.9A CN113745982A (en) | 2021-09-29 | 2021-09-29 | High-voltage ring main unit safe in operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111150679.9A CN113745982A (en) | 2021-09-29 | 2021-09-29 | High-voltage ring main unit safe in operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113745982A true CN113745982A (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111150679.9A Pending CN113745982A (en) | 2021-09-29 | 2021-09-29 | High-voltage ring main unit safe in operation |
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| Country | Link |
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| CN (1) | CN113745982A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116825558A (en) * | 2023-08-30 | 2023-09-29 | 福建德普乐能源科技有限公司 | Interlocking device for high-voltage switch equipment mechanism |
-
2021
- 2021-09-29 CN CN202111150679.9A patent/CN113745982A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116825558A (en) * | 2023-08-30 | 2023-09-29 | 福建德普乐能源科技有限公司 | Interlocking device for high-voltage switch equipment mechanism |
| 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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