CN114420479B - Cable chamber door interlocking structure of upper three-station ring main unit - Google Patents
Cable chamber door interlocking structure of upper three-station ring main unit Download PDFInfo
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- CN114420479B CN114420479B CN202210072578.2A CN202210072578A CN114420479B CN 114420479 B CN114420479 B CN 114420479B CN 202210072578 A CN202210072578 A CN 202210072578A CN 114420479 B CN114420479 B CN 114420479B
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- chamber door
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- 230000007246 mechanism Effects 0.000 claims abstract description 155
- 230000005540 biological transmission Effects 0.000 claims abstract description 148
- 230000000903 blocking effect Effects 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 10
- 230000009286 beneficial effect Effects 0.000 description 11
- 238000003756 stirring Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Patch Boards (AREA)
Abstract
The invention provides a cable chamber door interlocking structure of an upper three-station ring main unit, which comprises a grounding interlocking mechanism provided with a grounding interlocking stop block and a breaker interlocking mechanism provided with a breaker interlocking stop block, wherein a first transmission mechanism is arranged between the grounding interlocking stop block and a three-station isolating switch operating mechanism and is used for enabling the grounding interlocking stop block to have an unlocking position corresponding to the grounding state of the three-station isolating switch operating mechanism and a locking position corresponding to the isolating brake separating and isolating brake closing states of the three-station isolating switch operating mechanism; a second transmission mechanism is arranged between the circuit breaker interlocking stop block and the circuit breaker operating mechanism and is used for enabling the circuit breaker interlocking stop block to have an unlocking position corresponding to the closing state of the circuit breaker operating mechanism and a locking position corresponding to the opening state of the circuit breaker operating mechanism; the technical problem that the interlocking mechanism of the cable chamber door of the upper three-station ring main unit in the prior art is poor in reliability is effectively solved.
Description
Technical Field
The invention relates to interlocking between a shell, a cover or a protective cover and an operating mechanism, in particular to a cable chamber door interlocking structure of an upper three-station ring main unit.
Background
The upper three-station ring main unit is a ring main unit with a three-station isolating switch arranged above a circuit breaker, when the grounding operation is to be realized by adopting the cabinet body of the upper three-station isolating switch, the upper three-station isolating switch is required to be in a grounding state and the circuit breaker is required to be closed simultaneously, and according to the GB/T3906 standard five-prevention interlocking requirement, the cable chamber door can be opened only when the cabinet body is in the grounding state, so that the upper three-station isolating switch is required to be added for interlocking the cable chamber door and the circuit breaker is required to be interlocked with the cable chamber door during design. In addition, cable chamber door on the current cabinet body includes articulated cable chamber door and lift-up type cable chamber door, in order to satisfy the arcing requirement, the cable chamber door on the cabinet body adopts the lift-up type cable chamber door more, is equipped with the buckle of L shape on the lift-up type cable chamber door for realize the cooperation with the draw-in groove on the cabinet body, need go up first to lift up the cable chamber door when opening the cable chamber door, make buckle and draw-in groove release the cooperation, the cable chamber door can be opened.
In the prior art, the interlocking of the upper three-station isolating switch to the cable chamber door and the interlocking of the circuit breaker to the cable chamber door are realized through a ground interlocking mechanism and a circuit breaker interlocking mechanism which are separately arranged, the ground interlocking mechanism is used for realizing the interlocking of the three-station isolating switch and the cable chamber door, the three-station isolating switch comprises a first cam connected to a switching-on/off indicating shaft of the upper three stations and a first ejector rod corresponding to the first cam, the lower end of the first ejector rod corresponds to the cable chamber door, the first ejector rod moves up and down when the first cam rotates, limiting to the cable chamber door is realized, and the cable chamber door is prevented from being lifted and opened. The circuit breaker interlocking mechanism is used for realizing interlocking of the circuit breaker and the cable chamber door, and comprises a second cam arranged on a circuit breaker operating mechanism opening and closing indicating shaft and a second ejector rod corresponding to the second cam, wherein the lower end of the second ejector rod corresponds to the cable chamber door, and the second ejector rod moves up and down when the second cam rotates, so that limiting of the cable chamber door is realized, and the cable chamber door is prevented from being lifted and opened.
When the grounding interlocking mechanism and the circuit breaker interlocking mechanism in the prior art are used, if misoperation occurs, the force for preventing the cable chamber door from being opened when the cable chamber door is lifted is realized by the corresponding ejector rod, and because the distance between the first cam and the cable chamber door and the distance between the second cam and the cable chamber door are far, the length of the ejector rod between the first cam and the cable chamber door and the second cam is long, the radial size of the ejector rod is limited by the space of the ring main unit and is thinner, so that the ejector rod can be bent and deformed when being subjected to larger lifting force, and the cable chamber door is opened by mistake, and the reliability is poor.
Disclosure of Invention
The invention aims to provide a cable chamber door interlocking structure of an upper three-station ring main unit, which aims to solve the technical problem of poor reliability of the cable chamber door interlocking structure of the upper three-station ring main unit in the prior art.
The cable chamber door interlocking structure of the upper three-station ring main unit adopts the following technical scheme:
the cable chamber door interlocking structure of the upper three-station ring main unit comprises a grounding interlocking mechanism and a breaker interlocking mechanism, wherein the grounding interlocking mechanism and the breaker interlocking mechanism are respectively used for realizing the interlocking between a three-station disconnecting switch operating mechanism and the cable chamber door and between a breaker operating mechanism and the cable chamber door; a first transmission mechanism is arranged between the grounding interlocking stop block and the three-station isolating switch operating mechanism, and the first transmission mechanism is used for enabling the grounding interlocking stop block to act along with the three-station isolating switch operating mechanism and is provided with an unlocking position corresponding to the grounding state of the three-station isolating switch operating mechanism and a locking position corresponding to the isolating brake-separating and isolating brake-closing states of the three-station isolating switch operating mechanism; a second transmission mechanism is arranged between the circuit breaker interlocking stop block and the circuit breaker operating mechanism, and the second transmission mechanism is used for enabling the circuit breaker interlocking stop block to act along with the circuit breaker operating mechanism and is provided with an unlocking position corresponding to a closing state of the circuit breaker operating mechanism and a locking position corresponding to a separating state of the circuit breaker operating mechanism; the locking stop block is provided with a blocking part, and the blocking part is used for being positioned below the rotation axis of the locking stop block when the corresponding locking stop block is positioned at the locking position and blocking the cable chamber door or a blocking piece fixed on the cable chamber door, and is used for bearing the acting force passing through the rotation axis of the locking stop block to block the cable chamber door from being opened when the cable chamber door is lifted; the blocking portion is used to avoid the cable compartment door or the blocking member to release the locking of the cable compartment door when the corresponding interlock stop is in the unlocked position.
The beneficial effects are that: in the cable chamber door interlocking structure of the upper three-station ring main unit, when the grounding interlocking stop block and the circuit breaker interlocking stop block are positioned at the locking position, the blocking part on the interlocking stop block is positioned below the rotating axis of the interlocking stop block and is blocked on the cable chamber door or a blocking piece fixed on the cable chamber door, and the cable chamber door is lifted to bear the acting force passing through the rotating axis of the interlocking stop block.
Further, the bottommost side surface of the locking stop block is an arc-shaped surface, the blocking part is positioned on the arc-shaped surface, and the rotation axis of the arc-shaped surface is parallel to the rotation axis of the locking stop block.
The beneficial effects are that: when the locking stop block is switched between the unlocking position and the locking position through swinging, a certain gap is required to be kept between the blocking part and the corresponding blocking position on the cable chamber door so that the locking stop block can swing smoothly, the blocking part is positioned on the arc-shaped surface, the gap between the blocking part and the corresponding blocking position on the cable chamber door can be reduced, and the excessive gap is avoided, so that the blocking effect is influenced; the rotation axis of the arc-shaped surface is parallel to the rotation axis of the locking stop block, so that the locking stop block can be ensured to be smoother when swinging.
Further, the grounding interlocking block and the circuit breaker interlocking block are rotatably assembled on the same rotating shaft.
The beneficial effects are that: the grounding interlocking stop block and the circuit breaker interlocking stop block are rotationally assembled on the same rotating shaft, so that the structural arrangement of the grounding interlocking mechanism and the circuit breaker interlocking mechanism can be reduced, the number of corresponding parts is reduced, and the arrangement of the grounding interlocking mechanism and the circuit breaker interlocking mechanism is convenient; on the other hand, the arrangement of the grounding interlocking stop and the circuit breaker interlocking stop is more compact, and the installation space can be saved.
Further, the first transmission mechanism comprises a grounding transmission connecting rod hinged to the grounding interlocking stop block, the second transmission mechanism comprises a breaker transmission connecting rod hinged to the breaker interlocking stop block, and both ends of the grounding transmission connecting rod and both ends of the breaker transmission connecting rod are provided with hinge structures for forming a connecting rod mechanism so as to realize driving of the grounding interlocking stop block and the breaker interlocking stop block.
The beneficial effects are that: the connecting rod transmission mechanism is convenient to design, simple in structure and stable in transmission.
Further, the ground interlock block and the circuit breaker interlock block each comprise two side arms arranged in an L-shape; the hinge joint of the grounding interlocking block and the corresponding connecting rod and the blocking part of the grounding interlocking block are respectively positioned on the two side arms of the grounding interlocking block, and the hinge joint of the circuit breaker interlocking block and the corresponding connecting rod and the blocking part of the circuit breaker interlocking block are respectively positioned on the two side arms of the circuit breaker interlocking block.
The beneficial effects are that: the structure is adopted by the grounding interlocking stop block and the circuit breaker interlocking stop block, so that the connection of corresponding transmission connecting rods is facilitated, a longer driving force arm can be formed, the connection part of the transmission connecting rods is also convenient to set flexibly, and the corresponding transmission mechanism can be enabled to be smoother when the grounding interlocking stop block and the circuit breaker interlocking stop block are driven to rotate.
Further, the hinge parts of the grounding interlocking block and the corresponding connecting rod and the hinge parts of the circuit breaker interlocking block and the corresponding connecting rod are oppositely arranged at two sides of the rotation axis of the locking block.
The beneficial effects are that: the arrangement can prevent corresponding connecting rods of the first transmission mechanism and the second transmission mechanism from interfering when in action, and is beneficial to ensuring the stability of the interlocking structure.
Further, the cable chamber door interlocking structure further comprises an adjusting block arranged at least one end of the grounding transmission connecting rod and/or the breaker transmission connecting rod, a connecting rod perforation is arranged on the adjusting block, the grounding transmission connecting rod and/or the breaker transmission connecting rod passes through the connecting rod perforation and is in threaded connection with two adjusting nuts, the two adjusting nuts are respectively arranged at two ends of the connecting rod perforation and used for enabling the adjusting block to be fixed with the corresponding grounding transmission connecting rod or the breaker transmission connecting rod, a hinge structure is arranged on the adjusting block and used for realizing hinge connection of the corresponding ends of the grounding transmission connecting rod and/or the breaker transmission connecting rod.
The beneficial effects are that: the transmission connecting rod is hinged through the adjusting block, so that the transmission connecting rod can be conveniently installed; in addition, the transmission connecting rod can determine the position of the adjusting block on the transmission connecting rod by adjusting the positions of the two adjusting nuts, and when assembly errors are encountered, the transmission length of the transmission connecting rod can be adjusted according to assembly requirements, so that the assembly efficiency is effectively improved.
Further, the first transmission mechanism comprises a grounding interlocking swing arm hinged on the ring main unit, and two ends of the grounding transmission connecting rod are respectively hinged with the grounding interlocking swing arm and the grounding interlocking stop block; the first transmission mechanism further comprises a swing arm limiting structure, wherein the swing arm limiting structure is used for limiting the swing position of the grounding interlocking swing arm under the action of the reset spring to correspond to the locking position of the grounding interlocking stop block; the first transmission mechanism further comprises a toggle piece fixed on the opening and closing indication shaft or the opening and closing operation shaft of the three-station isolation switch operation mechanism, the toggle piece is used for toggling the grounding interlocking swing arm in the grounding action process of the three-station isolation switch operation mechanism so as to drive the grounding interlocking stop block to rotate to an unlocking position, and when the three-station isolation switch operation mechanism performs isolation opening and closing, the toggle piece is separated from the grounding interlocking swing arm.
The beneficial effects are that: because reset spring and ground connection interlocking swing arm and three station isolator operating mechanism are independent relatively, stir the piece and remove the cooperation relation with ground connection interlocking swing arm after, reset spring cooperates with swing arm limit structure, when isolation combined floodgate and isolation separating brake, ground connection interlocking swing arm can keep in the locking position, only when three station isolator operating mechanism ground connection, make ground connection interlocking swing arm rotate to the unblock position through stirring the piece, can satisfy three operating position of three station switch operating mechanism and the corresponding relation of two swing positions of ground connection interlocking swing arm.
Further, the stirring piece comprises a driving plate fixed on the opening and closing indicating shaft, and a stirring pin shaft for stirring the grounding interlocking swing arm is arranged on the end face of the driving plate.
The beneficial effects are that: the toggle piece adopts the structure, so that the original dial plate on the opening and closing indication shaft is utilized, and only one toggle pin shaft is required to be arranged during installation, so that the installation is very convenient.
Further, the second transmission mechanism comprises a breaker interlocking crank arm, the breaker interlocking crank arm is in transmission connection with a switching-on/off indication shaft or a switching-on/off operation shaft of the breaker operation mechanism, two ends of a breaker transmission connecting rod are respectively hinged with the breaker interlocking crank arm and a breaker interlocking stop block, and the breaker interlocking crank arm is used for driving the breaker interlocking stop block to rotate to an unlocking position through the breaker transmission connecting rod in the action process of switching on of the breaker operation mechanism and driving the breaker interlocking stop block to rotate to a locking position through the breaker transmission connecting rod in the action process of switching off of the breaker operation mechanism.
The beneficial effects are that: because the circuit breaker interlocking stop block only needs to correspond to the closing state of the circuit breaker operating mechanism when being in the unlocking position, the circuit breaker interlocking stop block only needs to correspond to the opening state of the circuit breaker operating mechanism when being in the locking position, the corresponding relation is relatively simple, and the second transmission mechanism adopts the structure of the circuit breaker transmission connecting rod and the circuit breaker interlocking crank arm, so that the transmission stability can be ensured, and meanwhile, the structure is relatively simple and convenient to assemble.
Drawings
Fig. 1 is a first state schematic diagram of a cable chamber door interlocking structure of an upper three-station ring main unit provided by the invention;
fig. 2 is a second state schematic diagram of a cable chamber door interlocking structure of the upper three-station ring main unit provided by the invention;
fig. 3 is a schematic diagram of a third state of a cable chamber door interlocking structure of the upper three-station ring main unit provided by the invention;
fig. 4 is an assembled schematic view of the ground interlock block and the circuit breaker interlock block with the block spindle;
FIG. 5 is a schematic illustration of the mating of a toggle pin and a grounded interlock swing arm;
fig. 6 is an assembly schematic diagram of a cable chamber door interlocking structure of an upper three-station ring main unit provided by the invention on the ring main unit.
The names of the corresponding components in the figures are:
1. a ring main unit; 11. three-station opening and closing indicating shaft; 12. a stopper rotating shaft; 13. a cable compartment door; 14. a stopper; 15. the breaker opening and closing indicating shaft; 16. a three-station isolating switch operating mechanism; 17. a circuit breaker operating mechanism; 18. the breaker opening and closing indicating shaft; 19. a U-shaped mounting seat; 2. a first transmission mechanism; 21. a dial; 22. the pin shaft is poked; 23. a grounding interlocking swing arm; 231. turning over the edge; 24. swing arm limiting shaft; 25. a return spring; 26. a grounded transmission link; 27. a ground interlock stop; 28. an upper ground adjustment block; 29. a lower ground adjustment block; 3. a second transmission mechanism; 31. a breaker interlocking crank arm; 32. a circuit breaker drive link; 33. an upper circuit breaker adjusting block; 34. a lower breaker adjustment block; 35. and the circuit breaker is interlocked with the stop block.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that in the present embodiment, relational terms such as "first" and "second" and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" or the like, as may occur, does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the depicted element.
In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
The present invention is described in further detail below with reference to examples.
Embodiment 1 of a cable chamber door interlocking structure of an upper three-station ring main unit in the invention:
as shown in fig. 1 to 6, the cable chamber door interlocking structure of the upper three-station ring main unit provided by the embodiment is arranged on the ring main unit 1, the ring main unit 1 is provided with a breaker operating mechanism 17, a three-station disconnecting switch operating mechanism 16 and a cable chamber door 13, the cable chamber door 13 is an upward-lifting cable chamber door, the three-station disconnecting switch operating mechanism 16 is located above the breaker operating mechanism 17, the cable chamber door interlocking structure of the upper three-station ring main unit comprises a grounding interlocking mechanism and a breaker interlocking mechanism, the grounding interlocking mechanism and the breaker interlocking mechanism all comprise locking blocks, the grounding interlocking mechanism realizes the interlocking between the three-station disconnecting switch operating mechanism 16 and the cable chamber door 13 through corresponding locking blocks, and the breaker interlocking mechanism realizes the interlocking between the breaker operating mechanism 17 and the cable chamber door 13 through corresponding locking blocks.
Specifically, the locking stop block on the grounding interlocking mechanism is a grounding interlocking stop block 27, the locking stop block on the circuit breaker interlocking mechanism is a circuit breaker interlocking stop block 35, the cable chamber door 13 is provided with a stop piece 14, as shown in fig. 4, the stop block rotating shaft 12 is installed on a U-shaped installation seat 19 with a downward opening, and the U-shaped installation seat 19 is located on the ring main unit 1. The ground interlock block 27 and the circuit breaker interlock block 35 are both rotatably mounted on the block rotation shaft 12, and the rotational axes of the ground interlock block 27 and the circuit breaker interlock block 35 coincide. A first transmission mechanism 2 is arranged between the grounding interlocking stop 27 and the three-station isolating switch operating mechanism 16, and the three-station isolating switch operating mechanism 16 enables the grounding interlocking stop 27 to act along with the three-station isolating switch operating mechanism 16 through the first transmission mechanism 2 and has an unlocking position corresponding to the grounding state of the three-station isolating switch operating mechanism 16 and a locking position corresponding to the isolating switch-off and switch-on states of the three-station isolating switch operating mechanism 16. The second transmission mechanism 3 is provided between the breaker interlock stopper 35 and the breaker operating mechanism 17, and the breaker operating mechanism 17 causes the breaker interlock stopper 35 to move with the breaker operating mechanism 17 through the second transmission mechanism 3, and has an unlock position corresponding to a closing state of the breaker operating mechanism 17 and a lock position corresponding to a opening state of the breaker operating mechanism 17.
In this embodiment, as shown in fig. 2, the first transmission mechanism 2 includes a ground connection interlocking swing arm 23 and a ground connection transmission link 26, the middle part of the ground connection interlocking swing arm 23 is hinged on the ring main unit 1, a toggle side matched with the three-station disconnecting switch operating mechanism 16 is provided on the ground connection interlocking swing arm 23, a toggle edge 231 is provided on the toggle side, and a return spring 25 is further connected to the ground connection interlocking swing arm 23. In addition, the first transmission mechanism 2 further comprises a swing arm limiting structure, and the swing arm limiting structure is a swing arm limiting shaft 24. Correspondingly, a three-station opening and closing indicating shaft 11 is arranged on the three-station disconnecting switch operating mechanism 16, a driving plate 21 is fixed on the three-station opening and closing indicating shaft 11, a driving pin 22 is arranged on the end face of the driving plate 21, and the driving plate 21 and the driving pin 22 are jointly used as driving pieces for driving the grounding interlocking swing arm 23. The grounding interlocking swing arm 23 and the grounding interlocking stop block 27 are connected through a grounding transmission connecting rod 26.
In this embodiment, as shown in fig. 2, in the process of moving the three-station disconnecting switch operating mechanism 16 to the grounding state, the three-station opening and closing indicating shaft 11 drives the driving plate 21 to rotate, as shown in fig. 5, the driving pin 22 on the driving plate 21 is in pushing contact with the turning edge 231 on the grounding interlocking swing arm 23, and the grounding interlocking swing arm 23 is driven to swing clockwise, so that one end of the grounding interlocking swing arm 23 hinged with the grounding transmission connecting rod 26 swings upwards, the grounding transmission connecting rod 26 is driven to move upwards, the grounding transmission connecting rod 26 drives the grounding interlocking stop block 27 to rotate around the stop block rotating shaft 12, at this moment, the reset spring 25 is in an extension force accumulation state, the blocking part on the grounding interlocking stop block 27 and the blocking piece 14 on the cable chamber door 13 are avoided in the up-down direction, and at this moment, the grounding interlocking stop block 27 is in unlocking position. As shown in fig. 1, in the process of the isolating brake opening and closing state to which the three-station isolating switch operating mechanism 16 acts, the three-station brake opening and closing indicating shaft 11 drives the driving plate 21 to rotate, the driving pin shaft 22 on the driving plate 21 is not in contact with the grounding interlocking swing arm 23, the return spring 25 pulls the grounding interlocking swing arm 23, so that the grounding interlocking swing arm 23 swings anticlockwise to a position in blocking contact with the swing arm limiting shaft 24, in the swinging process, one end of the grounding interlocking swing arm 23 hinged with the grounding transmission connecting rod 26 swings downwards to drive the grounding transmission connecting rod 26 to move downwards, the grounding transmission connecting rod 26 drives the grounding interlocking stop block 27 to rotate around the stop block rotating shaft 12, a blocking part on the grounding interlocking stop block 27 is located below the stop block rotating shaft 12 and is prevented from forming blocking fit with the stop block 14 on the cable chamber door 13 in the up-down direction, the acting force of the stop block part 14 on the grounding interlocking stop block 27 passes through the stop block 12.
In this embodiment, as shown in fig. 1 to 4, in order to facilitate the assembly of the ground transmission link 26, as shown in fig. 1 and 2, the ground transmission link 26 is hinged to the ground interlocking swing arm 23 and the ground interlocking stop 27 by ground adjustment blocks, which are divided into an upper ground adjustment block 28 and a lower ground adjustment block 29, the upper ground adjustment block 28 is disposed at the upper end of the ground transmission link 26, and the lower ground adjustment block 29 is disposed at the lower end of the ground transmission link 26. Specifically, the upper grounding adjustment block 28 and the lower grounding adjustment block 29 are respectively provided with a connection perforation, the upper end and the lower end of the grounding transmission connection rod 26 respectively pass through the connection perforation on the upper grounding adjustment block 28 and the lower grounding adjustment block 29, the upper end and the lower end of the grounding transmission connection rod 26 are respectively provided with external threads, the external threads of the upper end and the lower end of the grounding transmission connection rod 26 are respectively provided with two adjusting nuts (not shown in the figure), and the two adjusting nuts arranged at the upper end of the grounding transmission connection rod 26 are respectively positioned at two sides of the connection perforation of the upper grounding adjustment block 28, so that the upper grounding adjustment block 28 is fixed at the upper end of the grounding transmission connection rod 26. Two adjusting nuts provided at the lower end of the ground transmission link 26 are respectively located at both sides of the connection hole of the lower ground adjusting block 29, so that the lower ground adjusting block 29 is fixed at the lower end of the ground transmission link 26. In addition, the upper ground adjusting block 28 and the lower ground adjusting block 29 are both provided with hinge structures, the upper ground adjusting block 28 is hinged to the corresponding end of the ground interlocking swing arm 23 through the hinge structure of the upper ground adjusting block, and the lower ground adjusting block 29 is hinged to the ground interlocking stop block 27 through the hinge structure of the lower ground adjusting block. Because the grounding interlocking mechanism has errors in assembly, the arrangement has the advantage that the transmission length of the grounding transmission link 26 can be adjusted by adjusting the position of the adjusting nut on the grounding transmission link 26 according to the assembly condition, and the grounding transmission link is quite convenient. In addition, in order to facilitate the swing of the ground interlocking block 27, as shown in fig. 4, the ground interlocking block 27 includes two side arms arranged in an L shape, in which one side arm is hinged with the lower ground adjusting block 29, and the bottom side surface of the other side arm is an arc surface forming a blocking portion of the ground interlocking block 27, the rotation axis of the arc surface is parallel to the rotation axis of the ground interlocking block 27, and the junction of the two side arms is hinged on the crank arm rotation shaft 12.
In this embodiment, as shown in fig. 2 and 3, the second transmission mechanism 3 includes a breaker interlocking crank arm 31, a breaker opening and closing indication shaft 18 is disposed on the breaker operating mechanism 17, the breaker interlocking crank arm 31 is in transmission connection with the breaker opening and closing indication shaft 18, a breaker transmission link 32 is disposed between the breaker interlocking crank arm 31 and the breaker interlocking stop 35, and two ends of the breaker transmission link 32 are respectively hinged with the breaker interlocking crank arm 31 and the breaker interlocking stop 35. As shown in fig. 3, in the process of the circuit breaker operating mechanism 17 moving to the closing position, the circuit breaker opening and closing indicating shaft 18 rotates clockwise to drive the circuit breaker interlocking crank arm 31 to swing, so that the hinged ends of the circuit breaker interlocking crank arm 31 and the circuit breaker transmission connecting rod 32 swing upwards, the circuit breaker transmission connecting rod 32 moves upwards, the circuit breaker transmission connecting rod 32 drives the circuit breaker interlocking stop block 35 to rotate around the stop rotating shaft 12, the blocking part on the circuit breaker interlocking stop block 35 and the blocking piece 14 on the cable chamber door 13 avoid in the up-down direction, and at the moment, the circuit breaker interlocking stop block 35 is in the unlocking position. As shown in fig. 2 and 3, in the process of the circuit breaker operating mechanism 17 moving to the opening state, the circuit breaker opening and closing indicating shaft 18 rotates anticlockwise to drive the circuit breaker interlocking crank arm 31 to swing, so that the circuit breaker interlocking crank arm 31 swings downwards with the hinged end of the circuit breaker transmission connecting rod 32, the circuit breaker transmission connecting rod 32 moves downwards, the circuit breaker transmission connecting rod 32 drives the circuit breaker interlocking stop 35 to rotate around the stop rotating shaft 12, so that the blocking part on the circuit breaker interlocking stop 35 is located below the stop rotating shaft 12 and is blocked on the ascending path of the blocking piece 14 on the cable chamber door 13, and forms blocking fit with the blocking piece 14 on the cable chamber door 13 in the up-down direction, and the acting force of the blocking piece 14 on the blocking part on the circuit breaker interlocking stop 35 is lifted upwards to the cable chamber door 13 through the stop rotating shaft 12.
In this embodiment, as shown in fig. 1 to 4, in order to facilitate the assembly of the circuit breaker transmission link 32, the circuit breaker transmission link 32 is hinged to the circuit breaker interlocking crank arm 31 and the circuit breaker interlocking stop 35 through circuit breaker adjusting blocks, the circuit breaker adjusting blocks are divided into an upper circuit breaker adjusting block 33 and a lower circuit breaker adjusting block 34, the upper circuit breaker adjusting block 33 is disposed at the upper end of the circuit breaker transmission link 32, and the lower circuit breaker adjusting block 34 is disposed at the lower end of the circuit breaker transmission link 32. Specifically, the upper circuit breaker adjusting block 33 and the lower circuit breaker adjusting block 34 are respectively provided with a connection perforation, the upper end and the lower end of the circuit breaker transmission connecting rod 32 respectively penetrate through the connection perforation on the upper circuit breaker adjusting block 33 and the lower circuit breaker adjusting block 34, the upper end and the lower end of the circuit breaker transmission connecting rod 32 are respectively provided with external threads, the external threads of the upper end and the lower end of the circuit breaker transmission connecting rod 32 are respectively provided with two adjusting nuts (not shown in the figure), and the two adjusting nuts arranged at the upper end of the circuit breaker transmission connecting rod 32 are respectively positioned at two sides of the connection perforation of the upper circuit breaker adjusting block 33, so that the upper circuit breaker adjusting block 33 is fixed at the upper end of the circuit breaker transmission connecting rod 32. Two adjusting nuts arranged at the lower end of the breaker transmission link 32 are respectively positioned at two sides of the connecting perforation of the lower breaker adjusting block 34, so that the lower breaker adjusting block 34 is fixed at the lower end of the breaker transmission link 32. In addition, the upper breaker adjusting block 33 and the lower breaker adjusting block 34 are provided with hinge structures, the upper breaker adjusting block 28 is hinged to the corresponding end of the breaker interlocking crank arm 31 through the hinge structure of the upper breaker adjusting block itself, and the lower breaker adjusting block 29 is hinged to the breaker interlocking stop block 35 through the hinge structure of the lower breaker adjusting block itself.
In addition, in order to facilitate the swing of the circuit breaker interlocking block, as shown in fig. 4, the circuit breaker interlocking block 35 includes two side arms arranged in an L shape, in which one side arm is hinged with the lower circuit breaker adjusting block 34, and the bottom side surface of the other side arm is an arc surface forming a blocking portion of the circuit breaker interlocking block 35, the rotation axis of the arc surface is parallel to the rotation axis of the circuit breaker interlocking block, and the junction of the two side arms is hinged on the crank arm rotation shaft 12.
In this embodiment, in order to avoid interference between the ground interlocking mechanism and the circuit breaker interlocking mechanism, when the ground interlocking block 27 and the circuit breaker interlocking block 35 are rotatably assembled on the block rotating shaft 12, the hinge portion between the ground interlocking block 27 and the ground transmission link 26 and the hinge portion between the circuit breaker interlocking block 35 and the circuit breaker transmission link 32 are disposed on opposite sides of the block rotating shaft 12. It should be emphasized that, in the cable chamber door interlocking structure of the upper three-station ring main unit provided in this embodiment, as shown in fig. 4, only when the ground interlocking block 27 and the breaker interlocking block 35 are simultaneously located in the corresponding unlocking positions, the cable chamber door 14 can be opened normally upward.
Embodiment 2 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the first transmission mechanism includes a ground interlocking swing arm, a ground transmission link, and a ground interlocking stopper, and also includes a return spring and a swing arm limiting structure. In this embodiment, first drive mechanism includes ground connection interlocking top wheel, interlocking spacing ejector pin and reset spring, ground connection interlocking top wheel linkage assembly is on three station isolator operating mechanism's divide-shut brake indicating shaft, the interlocking gag lever post is along upper and lower direction removal assembly on the looped netowrk cabinet, the upper end and the ground connection interlocking cam cooperation of interlocking gag lever post, the lower extreme and the ground connection interlocking dog of interlocking gag lever post are articulated, ground connection interlocking top wheel periphery includes circular arc section and diameter gradual change section, keep apart the circular arc section that divides and closes corresponding, the diameter gradual change section that corresponds of ground connection stroke, three station isolator operating mechanism is in the action process of separating brake or closing a floodgate, circular arc section and the interlocking gag lever post push-push cooperation on the ground connection interlocking top wheel, make the interlocking gag lever post descend, reset spring is compressed, the interlocking gag lever post drives ground connection interlocking dog and rotates to the locking position, lock the cable chamber door. The three-station disconnecting switch operating mechanism is in contact with the upper end of the interlocking limit rod through the diameter gradual change section on the grounding interlocking top wheel in the grounding action process, when the three-station disconnecting switch operating mechanism acts to the grounding position, the diameter gradual change section is in a contact state with the upper end of the interlocking limit rod, the interlocking limit rod moves upwards under the action of the reset spring, and the interlocking limit rod drives the grounding interlocking stop block to rotate to the unlocking position, so that unlocking of the cable chamber door is completed.
Embodiment 3 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
this embodiment differs from embodiment 1 in that in embodiment 1 the second transmission mechanism comprises a breaker interlocking lever and a breaker transmission link. In the embodiment, the second transmission mechanism comprises a circuit breaker interlocking cam, an interlocking limit rod and a reset spring, wherein the circuit breaker interlocking cam is assembled on a switching-on/off indication shaft or a switching-on/off operation shaft of the circuit breaker operation mechanism in a linkage manner, the interlocking limit rod is assembled on the ring main unit in a guiding manner along the up-down direction, the upper end of the interlocking limit rod is matched with the circuit breaker interlocking cam, and the lower end of the interlocking limit rod is hinged with the circuit breaker interlocking stop block; the circuit breaker operating mechanism drives a protruding part on the circuit breaker interlocking cam to push the interlocking limit rod to move downwards in the brake separating action process, so that the reset spring is compressed, and the circuit breaker limit rod drives the grounding interlocking stop block to rotate to a locking position to lock the cable chamber door. The circuit breaker operating mechanism drives a protruding part on an interlocking cam of the circuit breaker to be in clearance fit with an interlocking limit rod in the closing action process, the interlocking limit rod moves upwards under the action of a reset spring, and the circuit breaker limit rod drives a grounding interlocking stop block to rotate to an unlocking position, so that unlocking of a cable chamber door is completed.
Embodiment 4 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
this embodiment differs from embodiment 1 in that in embodiment 1, the ground interlock stop and the breaker interlock stop are assembled on the same rotation shaft. In this embodiment, the grounding interlocking block and the circuit breaker interlocking block are assembled on two different rotating shafts, and the axes of the two rotating shafts coincide.
Embodiment 5 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
this embodiment differs from embodiment 1 in that in embodiment 1, both the ground interlock block and the circuit breaker interlock block include two side arms arranged in an L-shape. In the embodiment, the whole of the grounding interlocking stop block and the circuit breaker interlocking stop block is of a triangular structure, the hinging positions of the grounding interlocking stop block and the corresponding connecting rod and the blocking parts of the grounding interlocking stop block are respectively positioned at two vertexes of the grounding interlocking stop block, and the grounding interlocking stop block is rotationally assembled on the stop block rotating shaft through the rest vertexes; the hinge joint of the circuit breaker interlocking block and the corresponding connecting rod and the blocking part of the circuit breaker interlocking block are respectively positioned at two vertexes of the circuit breaker interlocking block, and the circuit breaker interlocking block is rotationally assembled on the block rotating shaft through the rest vertexes.
Embodiment 6 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
this embodiment differs from embodiment 1 in that in embodiment 1, the ground interlock stop and the circuit breaker interlock stop each comprise two side arms arranged in an L-shape, one of which is hinged to the corresponding drive link and the other is hinged to the corresponding interlock stop. In this embodiment, the ground interlock block and the circuit breaker interlock block each comprise only one side arm that is hinged to both the respective drive link and the respective interlock block.
Embodiment 7 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, both ends of the ground transmission link and the breaker transmission link are provided with adjusting blocks, and the positions of the adjusting blocks in the corresponding transmission links can be adjusted to complete the adjustment of the transmission lengths of the corresponding transmission links. In this embodiment, only one end of the grounded transmission connecting rod and the circuit breaker transmission connecting rod is provided with an adjusting block, one end of the adjusting block which is not provided with the adjusting block is provided with a hinge structure, the position of the adjusting block on the transmission connecting rod is adjustable, and the adjustment of the transmission length of the corresponding transmission connecting rod can be completed only by adjusting the adjusting block at one end. In other embodiments, the two ends of the grounded transmission connecting rod and the breaker transmission connecting rod are both provided with adjusting blocks, the adjusting blocks are fixed at the positions of the transmission connecting rods, and the transmission lengths of the transmission connecting rods are correspondingly fixed.
Embodiment 8 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the toggle member is fixed on the opening/closing indication shaft of the three-position disconnecting switch operating mechanism. In the embodiment, the stirring piece is fixed on the opening and closing operation shaft of the three-station isolating switch operation mechanism.
Embodiment 9 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the toggle member includes a dial and a toggle pin. In this embodiment, the stirring piece is a stirring arm, and the stirring arm is directly fixed on the opening and closing indicating shaft.
Embodiment 10 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the breaker interlocking lever is in transmission connection with the opening/closing indicating shaft of the breaker operating mechanism. In other embodiments, the breaker interlock lever is in driving connection with the opening and closing operating shaft of the breaker operating mechanism.
Embodiment 11 of the cable chamber door interlocking structure of the upper three-station ring main unit in the invention:
this embodiment differs from embodiment 1 in that in embodiment 1, the ground interlock block and the circuit breaker interlock block the stopper on the cable chamber door in the locked position. In this embodiment, the cable chamber door is not provided with a stop member, and the blocking portions of the ground interlocking stop block and the circuit breaker interlocking stop block are located above the cable chamber door when the ground interlocking stop block and the circuit breaker interlocking stop block are in the locked position, so as to directly block the cable chamber door.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The cable chamber door interlocking structure of the upper three-station ring main unit comprises a grounding interlocking mechanism and a circuit breaker interlocking mechanism, wherein the grounding interlocking mechanism and the circuit breaker interlocking mechanism are respectively used for realizing the interlocking between a three-station disconnecting switch operating mechanism (16) and a cable chamber door (13) and between a circuit breaker operating mechanism (17) and the cable chamber door (13), and the cable chamber door (13) is an upward-lifting cable chamber door; a first transmission mechanism (2) is arranged between the grounding interlocking stop block (27) and the three-station isolating switch operating mechanism (16), and the first transmission mechanism (2) is used for enabling the grounding interlocking stop block (27) to act along with the three-station isolating switch operating mechanism (16) and is provided with an unlocking position corresponding to the grounding state of the three-station isolating switch operating mechanism (16) and a locking position corresponding to the isolating opening and isolating closing states of the three-station isolating switch operating mechanism (16); a second transmission mechanism (3) is arranged between the circuit breaker interlocking stop block (35) and the circuit breaker operating mechanism (17), and the second transmission mechanism (3) is used for enabling the circuit breaker interlocking stop block (35) to act along with the circuit breaker operating mechanism (17) and is provided with an unlocking position corresponding to a closing state of the circuit breaker operating mechanism (17) and a locking position corresponding to a separating state of the circuit breaker operating mechanism (17); the locking stop blocks are provided with blocking parts, the blocking parts are used for being located below the rotation axes of the locking stop blocks when the corresponding locking stop blocks are in locking positions and blocking on the cable chamber door (13) or a blocking piece (14) fixed on the cable chamber door (13), and when the cable chamber door (13) is lifted up, acting force passing through the rotation axes of the locking stop blocks is born to block the cable chamber door (13) from being opened; the blocking part is used for avoiding the cable chamber door (13) or the blocking piece (14) to unlock the cable chamber door (13) when the corresponding interlocking block is in an unlocking position.
2. The cable chamber door interlocking structure of the upper three-station ring main unit according to claim 1, wherein the bottommost side surface of the locking stop block is an arc-shaped surface, the blocking part is positioned on the arc-shaped surface, and the rotation axis of the arc-shaped surface is parallel to the rotation axis of the locking stop block.
3. The cable chamber door interlocking structure of the upper three-station ring main unit according to claim 1, wherein the grounding interlocking block (27) and the circuit breaker interlocking block (35) are rotatably assembled on the same rotating shaft.
4. A cable room door interlock structure of a three-station ring main unit according to any one of claims 1 to 3, characterized in that the first transmission mechanism (2) comprises a ground transmission link (26) hinged on the ground interlock block (27), the second transmission mechanism (3) comprises a breaker transmission link (32) hinged on a breaker interlock block (35), both ends of the ground transmission link (26) and the breaker transmission link (32) are provided with hinge structures for forming a link mechanism to realize driving of the ground interlock block (27) and the breaker interlock block (35).
5. The cable chamber door interlock structure of the upper three-station ring main unit according to claim 4, wherein the ground interlock stop (27) and the circuit breaker interlock stop (35) each comprise two side arms arranged in an L-shape; the hinge joint of the grounding interlocking block (27) and the corresponding connecting rod and the blocking part of the grounding interlocking block (27) are respectively positioned on two side arms on the grounding interlocking block (27), and the hinge joint of the circuit breaker interlocking block (35) and the corresponding connecting rod and the blocking part of the circuit breaker interlocking block (35) are respectively positioned on two side arms of the circuit breaker interlocking block (35).
6. The cable chamber door interlocking structure of the upper three-station ring main unit according to claim 5, wherein the hinge part of the grounding interlocking block (27) and the hinge part of the breaker interlocking block (35) and the corresponding connecting rod are oppositely arranged at two sides of the rotation axis of the locking block.
7. The cable chamber door interlocking structure of the upper three-station ring main unit according to claim 4, further comprising an adjusting block arranged at least one end of the grounding transmission link (26) and/or the breaker transmission link (32), wherein the adjusting block is provided with a link perforation, the grounding transmission link (26) and/or the breaker transmission link (32) pass through the link perforation and are in threaded connection with two adjusting nuts, the two adjusting nuts are respectively arranged at two ends of the link perforation and used for fixing the adjusting block with the corresponding grounding transmission link (26) or the breaker transmission link (32), and the adjusting block is provided with a hinge structure which is used for realizing the hinge of the corresponding ends of the grounding transmission link (26) and/or the breaker transmission link (32).
8. The cable chamber door interlocking structure of the upper three-station ring main unit according to claim 4, wherein the first transmission mechanism (2) comprises a grounding interlocking swing arm (23) hinged on the ring main unit (1), and two ends of a grounding transmission connecting rod (26) are respectively hinged with the grounding interlocking swing arm (23) and a grounding interlocking stop block (27); the grounding interlocking swing arm (23) is connected with a reset spring (25), the first transmission mechanism (2) further comprises a swing arm limiting structure, and the swing arm limiting structure is used for limiting the swing position of the grounding interlocking swing arm (23) under the action of the reset spring (25) to correspond to the locking position of the grounding interlocking stop block (27); the first transmission mechanism (2) further comprises a toggle piece fixed on the opening and closing indication shaft or the opening and closing operation shaft of the three-station isolation switch operating mechanism (16), the toggle piece is used for toggling the grounding interlocking swing arm (23) to drive the grounding interlocking stop block (27) to rotate to an unlocking position in the grounding action process of the three-station isolation switch operating mechanism (16), and when the three-station isolation switch operating mechanism (16) performs isolation opening and closing, the toggle piece is separated from the grounding interlocking swing arm (23).
9. The cable room door interlocking structure of the upper three-station ring main unit according to claim 8, wherein the poking piece comprises a poking pin shaft (22) for poking a grounding interlocking swing arm (23) and fixed on a switch-on/switch-off indication shaft, and the end face of the poking plate (21) is provided with the poking pin shaft (21).
10. The cable room door interlocking structure of the upper three-station ring main unit according to claim 4, wherein the second transmission mechanism (3) comprises a breaker interlocking crank arm (31), the breaker interlocking crank arm (31) is in transmission connection with a switching-on/off indication shaft or a switching-on/off operation shaft of the breaker operation mechanism (17), two ends of a breaker transmission connecting rod (32) are respectively hinged with the breaker interlocking crank arm (31) and a breaker interlocking stop block (35), the breaker interlocking crank arm (31) is used for driving the breaker interlocking stop block (35) to rotate to an unlocking position through the breaker transmission connecting rod (32) in the action process of switching on the breaker operation mechanism (17), and the breaker interlocking stop block (35) is driven to rotate to a locking position through the breaker transmission connecting rod (32) in the action process of switching off the breaker operation mechanism (17).
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CN202210072578.2A CN114420479B (en) | 2022-01-21 | 2022-01-21 | Cable chamber door interlocking structure of upper three-station ring main unit |
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CN202210072578.2A CN114420479B (en) | 2022-01-21 | 2022-01-21 | Cable chamber door interlocking structure of upper three-station ring main unit |
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CN214226780U (en) * | 2020-12-31 | 2021-09-17 | 珠海康晋电气股份有限公司 | Be applied to interlock and looped netowrk cabinet of circuit breaker and isolator |
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CN214505299U (en) * | 2021-03-09 | 2021-10-26 | 福建中能电气有限公司 | Door interlock of upper isolation lower circuit breaker ring main unit and ring main unit |
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CN214505299U (en) * | 2021-03-09 | 2021-10-26 | 福建中能电气有限公司 | Door interlock of upper isolation lower circuit breaker ring main unit and ring main unit |
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