Switch combination equipment and box-type substation

Abstract

The invention relates to the technical field of electrical switch equipment, in particular to switch combination equipment and a box-type substation, and particularly relates to the switch combination equipment which comprises a circuit breaker, an isolating switch and a grounding switch, the isolating switch comprises an isolating cutter bar and an isolating static contact, and the grounding switch comprises a grounding cutter bar and a grounding static contact. The circuit breaker comprises a solid-sealed polar pole, the movable end and the static end of the solid-sealed polar pole are respectively provided with a wiring support, the wiring support corresponding to the movable end of the solid-sealed polar pole is a movable end support, and the wiring support corresponding to the static end of the solid-sealed polar pole is a static end support. One of the two wiring supports is used for installing an isolation cutter bar or an isolation static contact, and the other wiring support is used for installing a grounding cutter bar or a grounding static contact; all the switches are arranged in a centralized mode, and the space needed for arranging all the switches is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical switchgear, and in particular to a switch assembly device and a box-type transformer substation. Background Art

[0002] At present, box-type substations are developing in the direction of large capacity, miniaturization, integration and intelligence. In the new energy box-type power system, circuit breakers, disconnectors and grounding switches are important components of the main conductive circuit. The circuit breakers, disconnectors and grounding switches in the existing new energy box-type substations are independent components and are installed in a decentralized manner. They are arranged in the new energy box-type substation to form a power supply and grounding circuit. The circuit breaker is used to disconnect the load current, the disconnector is used to open and close the circuit for no-load operation, and the grounding switch is used for safe grounding during maintenance. The basic structure of this box-type substation is as follows: Figure 1 As shown, it includes a box body, in which various compartments are arranged, and the circuit breaker 1, the disconnector 2, and the grounding switch 3 are respectively arranged in the corresponding compartments, wherein the disconnector and the grounding switch are both knife switch structures, the disconnector includes a swingable disconnecting knife rod and an isolating static contact for cooperating with the disconnecting knife rod to realize opening and closing, and the grounding switch includes a swingable grounding knife rod and a grounding static contact for cooperating with the grounding knife rod to realize opening and closing.

[0003] However, the current decentralized installation structure of each switch occupies a large space in the box transformer due to the dispersed positions of each switch, which does not meet the development needs of miniaturization and integration. In addition, the amount of copper conductive bars used to connect the switch components is relatively large, which is not conducive to cost control, and also increases the resistance value of the conductive loop, resulting in energy waste. Summary of the invention

[0004] The object of the present invention is to provide a switch assembly device to solve the problem that the dispersed switches in the current box-type transformer require a large layout space; the object of the present invention is also to provide a box-type substation to solve the above problem.

[0005] The technical solution of the switch assembly device of the present invention is:

[0006] A switch combination device includes a circuit breaker, an isolating switch and an earthing switch, the isolating switch includes an isolating knife rod and an isolating static contact, the earthing switch includes a grounding knife rod and a grounding static contact, the circuit breaker includes a sealed pole, the moving end and the static end of the sealed pole are respectively provided with wiring supports, the wiring support corresponding to the moving end of the sealed pole is the moving end support, the wiring support corresponding to the static end of the sealed pole is the static end support, one of the two wiring supports is used for installing the isolating knife rod or the isolating static contact, and the other is used for installing the grounding knife rod or the grounding static contact.

[0007] Beneficial effects: By respectively arranging wiring supports at the static end and the dynamic end of the sealed pole of the circuit breaker, the isolating switch and the grounding switch are connected to the circuit breaker by using the two wiring supports, so as to realize centralized arrangement, which is beneficial to reduce the space required for arranging each switch, and further beneficial to the miniaturization design of the box transformer, and is beneficial to reduce the conductive bars used for connection between switches, save materials, and reduce the resistance value of the conductive circuit.

[0008] Furthermore, the switch assembly device also includes a frame, and the operating mechanism of the circuit breaker, the operating mechanism of the isolating switch and the operating mechanism of the grounding switch are all arranged on the frame, and the sealed pole and the grounding knife rod and the isolating knife rod are arranged on the same side of the frame.

[0009] Beneficial effect: The operating mechanism of the switch is integrated and installed together using the frame, and the sealed pole, grounding knife rod and isolation knife rod are arranged on the same side of the frame, which is convenient for installation of the equipment in the box, and has a compact structure, reduces the occupied space, and is conducive to reducing the use of connecting conductive bars.

[0010] Furthermore, the isolating static contact is fixed to the frame through the first support insulator, and the isolating knife rod is swingably mounted on the corresponding wiring support.

[0011] Beneficial effect: The frame is used to set the first support insulator and then fix the isolating static contact, which is stable and convenient for the isolating knife rod and the isolating static contact to perform opening and closing operations.

[0012] Furthermore, the isolating knife rod is installed on the moving end support, the moving end support is fixed to the frame through the second support insulator, and the first support insulator is arranged obliquely relative to the second support insulator.

[0013] Beneficial effect: The first pillar insulator is arranged at an angle, which facilitates the cooperation between the isolating static contact and the swinging isolating knife rod, and is beneficial to reducing the space occupied by the equipment.

[0014] Furthermore, an inclined support mounting surface is provided at the end of the frame, and the first support insulator is mounted on the support mounting surface.

[0015] Beneficial effect: It is conducive to stably installing the first pillar insulator on the frame.

[0016] Furthermore, the operating mechanism of the circuit breaker includes a transmission member hingedly mounted on a moving end support, and the transmission member is used to drive the moving contact of the sealed pole to perform opening and closing actions.

[0017] Beneficial effects: The isolation knife rod and the transmission member of the circuit breaker operating mechanism are hinged by using the same wiring support, which has a compact structure and is easy to install.

[0018] Furthermore, the transmission member is a transmission crank arm, one end of the transmission crank arm is connected to an insulating pull rod, and the other end is connected to a transmission rod, and the transmission rod is fixed to the moving contact of the sealed pole.

[0019] Beneficial effects: the insulating pull rod is used to drive the transmission crank arm to rotate, the transmission crank arm drives the transmission rod to move, and the transmission rod drives the moving contact to move, the structure is simple and the use is reliable.

[0020] Furthermore, the isolating knife rod is installed on the moving end support, and a conductive clip is provided on the moving contact of the sealed pole, and the conductive clip is connected to the isolating knife rod through a flexible connection.

[0021] Beneficial effect: ensuring reliable conductive connection between the isolating knife rod and the moving contact.

[0022] Furthermore, the wiring support is a frame-shaped structure.

[0023] The technical solution of the box-type substation of the present invention is:

[0024] A box-type substation comprises a box body, in which a switch assembly device is arranged, the switch assembly device comprises a circuit breaker, an isolating switch and an earthing switch, the isolating switch comprises an isolating knife rod and an isolating static contact, the earthing switch comprises an earthing knife rod and an earthing static contact, the circuit breaker comprises a sealed pole, the moving end and the static end of the sealed pole are respectively provided with wiring supports, the wiring support corresponding to the moving end of the sealed pole is the moving end support, the wiring support corresponding to the static end of the sealed pole is the static end support, one of the two wiring supports is for installing the isolating knife rod or the isolating static contact, and the other is for installing the grounding knife rod or the grounding static contact.

[0025] Beneficial effects: By respectively arranging wiring supports at the static end and the dynamic end of the sealed pole of the circuit breaker, the isolating switch and the grounding switch are connected to the circuit breaker by using the two wiring supports, so as to realize centralized arrangement, which is beneficial to reduce the space required for arranging each switch, and further beneficial to the miniaturization design of the box transformer, and is beneficial to reduce the conductive bars used for connection between switches, save materials, and reduce the resistance value of the conductive circuit.

[0026] Furthermore, the switch assembly device also includes a frame, and the operating mechanism of the circuit breaker, the operating mechanism of the isolating switch and the operating mechanism of the grounding switch are all arranged on the frame, and the sealed pole and the grounding knife rod and the isolating knife rod are arranged on the same side of the frame.

[0027] Beneficial effect: The operating mechanism of the switch is integrated and installed together using the frame, and the sealed pole, grounding knife rod and isolation knife rod are arranged on the same side of the frame, which is convenient for installation of the equipment in the box, and has a compact structure, reduces the occupied space, and is conducive to reducing the use of connecting conductive bars.

[0028] Furthermore, the isolating static contact is fixed to the frame through the first support insulator, and the isolating knife rod is swingably mounted on the corresponding wiring support.

[0029] Beneficial effect: The frame is used to set the first support insulator and then fix the isolating static contact, which is stable and convenient for the isolating knife rod and the isolating static contact to perform opening and closing operations.

[0030] Furthermore, the isolating knife rod is installed on the moving end support, the moving end support is fixed to the frame through the second support insulator, and the first support insulator is arranged obliquely relative to the second support insulator.

[0031] Beneficial effect: The first pillar insulator is arranged at an angle, which facilitates the cooperation between the isolating static contact and the swinging isolating knife rod, and is beneficial to reducing the space occupied by the equipment.

[0032] Furthermore, an inclined support mounting surface is provided at the end of the frame, and the first support insulator is mounted on the support mounting surface.

[0033] Beneficial effect: It is conducive to stably installing the first pillar insulator on the frame.

[0034] Furthermore, the operating mechanism of the circuit breaker includes a transmission member hingedly mounted on a moving end support, and the transmission member is used to drive the moving contact of the sealed pole to perform opening and closing actions.

[0035] Beneficial effects: The isolation knife rod and the transmission member of the circuit breaker operating mechanism are hinged by using the same wiring support, which has a compact structure and is easy to install.

[0036] Furthermore, the transmission member is a transmission crank arm, one end of the transmission crank arm is connected to an insulating pull rod, and the other end is connected to a transmission rod, and the transmission rod is fixed to the moving contact of the sealed pole.

[0037] Beneficial effects: the insulating pull rod is used to drive the transmission crank arm to rotate, the transmission crank arm drives the transmission rod to move, and the transmission rod drives the moving contact to move, the structure is simple and the use is reliable.

[0038] Furthermore, the isolating knife rod is installed on the moving end support, and a conductive clip is provided on the moving contact of the sealed pole, and the conductive clip is connected to the isolating knife rod through a flexible connection.

[0039] Beneficial effect: ensuring reliable conductive connection between the isolating knife rod and the moving contact.

[0040] Furthermore, the wiring support is a frame-shaped structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a box-type substation in the prior art;

[0042] Figure 2It is a structural schematic diagram of embodiment 1 of the box-type substation of the present invention;

[0043] Figure 3 for Figure 2 A schematic diagram of the structure of the switch combination device in FIG.

[0044] Figure 4 for Figure 3 Schematic diagram of the structure of the post insulator;

[0045] Figure 5 for Figure 3 A schematic diagram of the structure of the upper support in FIG.

[0046] Figure 6 for Figure 3 A schematic diagram of the structure of the lower support in FIG.

[0047] Figure 7 for Figure 3 A schematic diagram of the structure of the conductive clip;

[0048] Figure 8 for Figure 3 A schematic diagram of the structure of the sealed pole;

[0049] Fig. 9 for Figure 3 A schematic diagram of the structure of the isolation arbor in FIG.

[0050] Fig.10 for Figure 3 Schematic diagram of the structure of the grounding knife rod.

[0051] In the figure: 100, box; 1, circuit breaker; 11, sealed pole; 111, moving contact; 112, fixing nut; 12, circuit breaker pull rod; 13, transmission crank arm; 14, conductive clamp; 141, holding hole; 142, conductive connection hole; 2, isolating switch; 21, isolating knife rod; 211, knife rod hinge matching hole; 22, isolating static contact; 23, isolating knife pull rod; 24, soft connection; 3, grounding switch; 31, grounding Grounding rod; 32, grounding static contact; 4, frame; 5, first pillar insulator; 6, second pillar insulator; 7, third pillar insulator; 8, upper support; 81, upper through hole; 82, rod hinge hole; 83, upper pillar fixing hole; 84, upper fixed mounting hole; 85, crank arm hinge hole; 9, lower support; 91, lower wiring fixing hole; 92, lower contact fixing hole; 93, lower pillar fixing hole; 94, lower fixed mounting hole. DETAILED DESCRIPTION

[0052] Embodiment 1 of the box-type substation of the present invention:

[0053] In this embodiment, wiring supports are respectively provided at the static end and the dynamic end of the sealed pole of the circuit breaker, and the isolating switch and the earthing switch are connected to the circuit breaker by using the two wiring supports, so as to realize centralized arrangement, which is beneficial to reduce the space required for arranging each switch, and further beneficial to the miniaturization design of the box transformer, and is beneficial to reduce the conductive bars used for connection between switches, save materials, and reduce the resistance value of the conductive circuit.

[0054] Specifically, Figure 2-10 As shown, the box-type substation includes a box body 100 and a switch assembly device arranged in the box body 100. The switch assembly device includes a circuit breaker 1, a disconnector 2 and a grounding switch 3. The three are integrated into one device to reduce the occupied space.

[0055] The isolating switch 2 is arranged on the upper side of the circuit breaker 1, and the grounding switch 3 is arranged on the lower side of the circuit breaker 1. The circuit breaker 1, the isolating switch 2 and the grounding switch 3 all have corresponding operating mechanisms for realizing the opening and closing actions. The switch assembly device also includes a frame 4, which is a box-type structure. The operating mechanisms of the circuit breaker 1, the isolating switch 2 and the grounding switch 3 are all arranged on the frame 4. The circuit breaker 1 includes a sealed pole 11 arranged up and down. The isolating switch 2 and the grounding switch 3 are both knife switch structures. The isolating switch 2 includes an isolating knife rod 21 and an isolating static contact 22, and the grounding switch 3 includes a grounding knife rod 31 and a grounding static contact 32. The sealed pole 11, the grounding knife rod 31 and the isolating knife rod 21 are arranged on the same side of the frame 4, which is the right side in this embodiment. The operating mechanism of the switch is integrated and installed together using the frame 4, and the sealed pole 11 and the grounding knife rod 31 and the isolation knife rod 21 are arranged on the same side of the frame 4, which is convenient for the installation of the equipment in the box 100, and has a compact structure, reduces the occupied space, and is conducive to reducing the use of connecting conductive bars.

[0056] The sealed pole 11 of the circuit breaker 1 is provided with a vacuum interrupter as well as a static contact and a moving contact 111 of the circuit breaker 1. The static contact of the circuit breaker 1 is arranged at the static end of the sealed pole 11, and the moving contact 111 of the circuit breaker 1 is arranged at the moving end of the sealed pole 11, with the moving end of the sealed pole 11 being at the top and the static end being at the bottom. The moving end and the static end of the sealed pole 11 are provided with wiring supports respectively, and the two wiring supports are respectively an upper support 8 and a lower support 9, the upper support 8 constitutes a moving end support, and the lower support 9 constitutes a static end support.

[0057] The isolating static contact 22 of the isolating switch 2 is fixed to the frame 4 through the first post insulator 5, the upper support 8 is fixed to the frame 4 through the second post insulator 6, and the lower support 9 is fixed to the frame 4 through the third post insulator 7. The first post insulator 5, the second post insulator 6 and the third post insulator 7 have the same structure. Figure 4As shown, both ends of the post insulator are respectively provided with fixing holes for fixing with corresponding components, and each post insulator is fixed on the side of the frame 4.

[0058] The upper support 8 is a frame-shaped structure, and includes a lower side wall, a front side wall, a rear side wall, a left side wall and a right side wall. The upper support 8 has an upward opening, and the front side wall and the rear side wall are respectively provided with side openings, and the right side wall is lower than the front side wall and the rear side wall. Two lugs are provided on the right side of the lower right side wall of the upper support 8, and the lugs are provided with upper fixed mounting holes 84. The end surface of the movable end of the sealed pole 11 is provided with a fixing nut 112. The upper fixed mounting holes 84 correspond to the fixing nuts 112 so that the upper support 8 is fixed to the movable end of the sealed pole 11 by bolts. An upper support fixing hole 83 is provided on the left side wall of the upper support 8, and the upper support 8 is fixed to the right end of the second support insulator 6 through the upper support fixing hole 83. An upper through hole 81 is provided on the bottom side wall of the upper support 8 for the movable contact 111 of the circuit breaker 1 to pass through. The upper parts of the front side wall and the rear side wall of the upper support 8 are also provided with a crank arm hinge hole 85 and a knife bar hinge hole 82 respectively. The crank arm hinge hole 85 is located on the left side of the knife bar hinge hole 82.

[0059] The operating mechanism of the circuit breaker 1 includes a circuit breaker rod 12, a transmission crank arm 13 and a transmission rod. The circuit breaker rod 12 constitutes an insulating rod. The middle part of the transmission crank arm 13 is hingedly mounted on the upper support 8 through the crank arm hinge hole 85. One end of the transmission crank arm is connected to the insulating rod and the other end is connected to the transmission rod. The transmission rod is fixedly connected to the moving contact 111. The operating mechanism of the circuit breaker 1 also includes a driving mechanism arranged in the frame 4 for driving the circuit breaker rod 12 to move. The driving mechanism belongs to the prior art and will not be described in detail. The circuit breaker rod 12 drives the transmission crank arm 13 to rotate, the transmission crank arm 13 drives the transmission rod to move, and the transmission rod drives the moving contact 111 to move to realize the opening and closing action.

[0060] The upper end of the isolating knife bar 21 of the isolating switch 2 is hingedly mounted on the upper support 8 through the knife bar hinge hole 82, and the lower end is used to cooperate with the isolating static contact 22 to achieve conductive contact. The isolating knife bar 21 is provided with a knife bar hinge matching hole 211 corresponding to the knife bar hinge hole 82. The operating mechanism of the isolating switch 2 includes an isolating knife pull rod 23, one end of which is hinged to the middle part of the isolating knife bar 21, and the other end is connected to the driving mechanism of the operating mechanism of the isolating switch 2 arranged in the frame 4. The driving mechanism is a prior art and will not be described in detail. The isolating knife pull rod 23 drives the isolating knife bar 21 to swing to achieve the opening and closing action. A conductive clip 14 is fixed to the moving contact 111 of the circuit breaker 1. The conductive clip 14 is provided with a clamping hole 141 and a conductive connection hole 142. The clamping hole 141 is for the moving contact 111 to pass through and enables the conductive clip 14 to clamp on the moving contact 111. The conductive clip 14 is connected to a soft connection 24 through the conductive connection hole 142. The soft connection 24 is connected to the isolating knife rod 21, thereby realizing the conductive connection between the moving contact 111 and the isolating knife rod 21.

[0061] The first post insulator 5 is located above the second post insulator 6, the isolating knife pull rod 23 and the circuit breaker pull rod 12 are located between the first post insulator 5 and the second post insulator 6, and the isolating knife pull rod 23 is located above the circuit breaker pull rod 12. The second post insulator 6 is arranged horizontally, and the first post insulator 5 is arranged obliquely relative to the second post insulator 6. The right end of the first post insulator 5 is higher than the left end, so that the first post insulator 5 is arranged obliquely, which is convenient for the isolating static contact 22 to cooperate with the swinging isolating knife rod, which is beneficial to reducing the space occupied by the equipment. The upper end of the frame 4 is provided with an inclined support mounting surface, and the first post insulator 5 is installed on the support mounting surface, which is beneficial for the first post insulator 5 to be firmly installed on the frame 4.

[0062] The lower support 9 is a frame-shaped structure. The lower support 9 includes an upper side wall, a lower side wall, a left side wall and a right side wall. Two lugs are provided on the right side of the upper right side wall of the lower support 9. The lugs are provided with lower fixing holes 94. The lower fixing holes 94 correspond to the embedded nuts provided on the lower end surface of the sealed pole 11 so as to fix the lower support 9 to the sealed pole 11 by bolts. The upper side wall of the lower support 9 is provided with a lower wiring fixing hole 91. The lower support 9 is connected to the static end conductor of the sealed pole 11 through the lower wiring fixing hole 91. The left side wall of the lower support 9 is provided with a lower support fixing hole 93. The lower support fixing hole 93 corresponds to the fixing hole at the right end of the third support insulator 7. The lower support 9 is fixed to the third support insulator 7 by bolts. The lower side wall of the lower support 9 is provided with a lower contact fixing hole 92. The grounding static contact 32 is fixed on the lower support 9 through the lower contact fixing hole 92. The lower support 9 is also provided with a fixing hole for connecting the conductive bar.

[0063] The grounding contact of the grounding switch 3 is located below the lower support 9 and is tilted relative to the lower side of the lower support 9. The left end of the grounding knife rod 31 is rotatably mounted on the frame 4, and the right end is used to cooperate with the grounding static contact to realize opening and closing. The grounding knife rod 31 is located below the third support insulator 7. There is also a driving mechanism in the frame 4 for driving the grounding knife rod 31 to swing. The driving mechanism is a prior art and will not be described here.

[0064] When the switch combination equipment needs to be powered on: the first step is to open the grounding switch 3: rotate the grounding knife shaft on the upper frame 4, the grounding knife rod 31 rotates downward, and the grounding knife rod 31 is separated from the grounding static contact 32. The second step is to close the isolating switch 2: rotate the isolating knife shaft on the frame 4, pull the isolating knife pull rod 23, and make the isolating knife rod 21 engage with the isolating static contact 22. The third step is to close the circuit breaker 1: the circuit breaker pull rod 12 drives the moving contact 111 of the sealed pole 11 to make the sealed pole 11 of the circuit breaker 1 conductive. At this time, the isolating static contact 22, the isolating knife rod 21, the soft connection 24, the conductive clamp 14, the sealed pole 11, and the lower support 9 form a conductive path, and the power supply operation is completed. When the power is cut off, just reverse the above three steps.

[0065] The isolating switch, earthing switch and circuit breaker are assembled on the same frame to form an integral component with simple structure, convenient installation, reduced space occupation, centralized arrangement of components, reduced conductive bars for connection between components, saved materials, reduced switching and fixing between components, reduced resistance value of conductive circuit, improved equipment energy efficiency, and met the requirements of equipment miniaturization and integration. The operation is safer and more reliable, meeting the safety, reliability and versatility requirements of electrical equipment, and has a wide range of applications.

[0066] Embodiment 2 of the box-type substation in the present invention:

[0067] This embodiment provides a different switch assembly device arrangement form from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the sealed pole, grounding rod, and isolation rod in Embodiment 1 are arranged on the same side of the rack. In this embodiment, the sealed pole is arranged on the left side of the rack, and the grounding rod and isolation rod are arranged on the right side of the rack.

[0068] Embodiment 3 of the box-type substation in the present invention:

[0069] This embodiment provides a different isolating switch arrangement form from that of the first embodiment. The difference between this embodiment and the first embodiment is that the isolating static contact in the first embodiment is fixed to the frame through the first support insulator, and the isolating knife bar is swingably mounted on the corresponding wiring support. In this embodiment, the isolating static contact is fixed to the corresponding wiring support, and the isolating knife bar is hinged on the first support insulator.

[0070] Embodiment 4 of the box-type substation in the present invention:

[0071] This embodiment provides a different arrangement of the first post insulator from that of the first embodiment. The difference between this embodiment and the first embodiment is that the first post insulator in the first embodiment is arranged obliquely relative to the second post insulator. In this embodiment, the first post insulator is arranged parallel to the second post insulator.

[0072] Embodiment 5 of the box-type substation in the present invention:

[0073] This embodiment provides a different rack setting form from that of the first embodiment. The difference between this embodiment and the first embodiment is that the end of the rack in the first embodiment is provided with an inclined support mounting surface, and the first support insulator is mounted on the support mounting surface. In this embodiment, the rack is no longer provided with an inclined support mounting surface, and the left end of the main body of the first support insulator is provided with a fixing seat for fixing to the rack, the left end face of the fixing seat is in contact with the side face of the rack, and the main body of the first support insulator is arranged at an inclination relative to the left end face of the fixing seat.

[0074] Embodiment 6 of the box-type substation in the present invention:

[0075] This embodiment provides a transmission crank arm arrangement different from that of the first embodiment. The difference between this embodiment and the first embodiment is that the transmission crank arm of the operating mechanism of the circuit breaker in the first embodiment is hingedly mounted on the movable end support. In this embodiment, a transmission support seat is separately provided at the upper end of the sealed pole, and the transmission crank arm is hingedly mounted on the transmission support seat.

[0076] Embodiment 7 of the box-type substation in the present invention:

[0077] This embodiment provides a transmission member arrangement different from that of the first embodiment. The difference between this embodiment and the first embodiment is that the transmission member in the first embodiment is a transmission crank arm, while in this embodiment, the transmission member is a lever extending in a straight line.

[0078] Embodiment 8 of the box-type substation in the present invention:

[0079] This embodiment provides a different arrangement of the sealed pole from that of the first embodiment. The difference between this embodiment and the first embodiment is that a conductive clip is provided on the movable contact of the sealed pole in the first embodiment, and the conductive clip is connected to the isolating knife bar through a flexible connection. In this embodiment, the conductive clip and the flexible connection are not provided, and the movable contact is directly connected to the isolating knife bar through the upper support.

[0080] Embodiment 9 of the box-type substation in the present invention:

[0081] This embodiment provides a different arrangement of the wiring support from that of the first embodiment. The difference between this embodiment and the first embodiment is that the wiring support in the first embodiment is a hollow frame structure. In this embodiment, the wiring support is a wiring block.

[0082] Embodiments of the switch assembly device of the present invention:

[0083] The switch assembly device in this embodiment is the same as the switch assembly device in any of the above-mentioned embodiments 1-9 of the box-type substation, and will not be described again here.

[0084] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A switch assembly device, comprising a circuit breaker, an isolating switch and a grounding switch, wherein the isolating switch comprises an isolating knife bar and an isolating static contact, and the grounding switch comprises a grounding knife bar and a grounding static contact, wherein: The circuit breaker includes a sealed pole, and the moving end and the static end of the sealed pole are respectively provided with wiring supports. The wiring support corresponding to the moving end of the sealed pole is the moving end support, and the wiring support corresponding to the static end of the sealed pole is the static end support. One of the two wiring supports is used for installing an isolating knife rod or an isolating static contact, and the other is used for installing a grounding knife rod or a grounding static contact.

2. The switch assembly device according to claim 1, characterized in that: The switch assembly device also includes a frame, on which the operating mechanisms of the circuit breaker, the isolating switch and the grounding switch are all arranged, and the sealed pole, the grounding knife rod and the isolating knife rod are arranged on the same side of the frame.

3. The switch assembly device according to claim 2, characterized in that: The isolating static contact is fixed to the frame through the first support insulator, and the isolating knife rod is swingably installed on the corresponding wiring support.

4. The switch assembly device according to claim 3, characterized in that: The isolating knife rod is installed on the moving end support, the moving end support is fixed to the frame through the second support insulator, and the first support insulator is arranged obliquely relative to the second support insulator.

5. The switch assembly device according to claim 4, characterized in that: An inclined support mounting surface is provided at the end of the frame, and the first support insulator is mounted on the support mounting surface.

6. The switch assembly device according to any one of claims 1 to 5, characterized in that: The operating mechanism of the circuit breaker includes a transmission member hingedly mounted on a moving end support, and the transmission member is used to drive the moving contact of the sealed pole to perform opening and closing actions.

7. The switch assembly device according to claim 6, characterized in that: The transmission member is a transmission crank arm, one end of which is connected to an insulating pull rod and the other end is connected to a transmission rod, and the transmission rod is fixed to a moving contact of the sealed pole.

8. The switch assembly device according to any one of claims 1 to 5, characterized in that: The isolating knife rod is installed on the moving end support, and a conductive clip is provided on the moving contact of the sealed pole, and the conductive clip is connected to the isolating knife rod through a flexible connection.

9. The switch assembly device according to any one of claims 1 to 5, characterized in that: The wiring support is a frame-shaped structure.

10. A box-type substation, comprising a box body, characterized in that: A switch assembly device is provided in the box, and the switch assembly device is the switch assembly device described in any one of claims 1 to 9 above.

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