A compact switchgear

Abstract

The utility model provides a compact switch cabinet, include: air tank, the side wall sealedly connects with lower wiring pipe and upper wiring pipe, be equipped with in air tank: a plurality of solid seal pole, the left and right distribution of electrically connected lower wiring pipe in proper order, the front end of solid seal pole is equipped with insulating cover, a plurality of upper contact, respectively electrically connected a plurality of upper wiring pipe front and rear distribution and be located a plurality of solid seal pole top, a plurality of disconnecting switch, the rotation of driven shaft drive and front and rear distribution between a plurality of solid seal pole and a plurality of upper contact, the both ends of disconnecting switch are bent and are equipped with the both ends respectively as conductive end, a plurality of conducting part, one end is connected a plurality of solid seal pole and is located in insulating cover, the other end is respectively along insulating cover and / or solid seal pole outer wall and is folded to the corresponding a plurality of disconnecting switch below of front and rear distribution in proper order, a plurality of grounding contact. Realize the beneficial effect of shortening air tank front and rear width and height, thereby improve the compactness of air tank internal component structure, reduce the overall cost of switch cabinet.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinets, specifically a compact switch cabinet. Background Technology

[0002] A switchgear is an electrical device whose main function is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes in a power system. It is mainly applicable to various occasions such as power plants, substations, petrochemical plants, metallurgical steel rolling mills, light industry and textiles, factories and mines, residential communities, and high-rise buildings.

[0003] In existing switchgear, the three-phase solid-sealed terminals and three-phase disconnectors are arranged in a left-center-right configuration, requiring them to be distributed front-to-back. This increases the front-to-back width of the switchgear's gas box. Furthermore, the three-phase disconnector is designed with one end connected to the solid-sealed terminal via a lower contact, and the other end oscillating to connect to the upper contact, grounding contact, or remain suspended to achieve three-position switching. This disconnector structure requires significant vertical space, further increasing the gas box's height. Moreover, the existing lower contact uses a bent, externally insulated conductor to connect to the solid-sealed terminal for insulation, which further increases the gas box's height. Since the gas box needs to be made of stainless steel, larger volumes increase costs. Therefore, the existing gas box's lack of compactness leads to a higher overall cost for the switchgear.

[0004] The research objective of this utility model is to design a compact switch cabinet to address the problems existing in the prior art. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a compact switch cabinet that can effectively solve the problems existing in the prior art.

[0006] The technical solution of this utility model is:

[0007] A compact switch cabinet includes:

[0008] The gas box has several lower connecting pipes and several upper connecting pipes sealed to its side walls. The gas box contains:

[0009] Several solid-sealed terminals are electrically connected to the lower connecting pipe and are distributed sequentially from left to right. An insulating cover is provided at the front end of each solid-sealed terminal.

[0010] A plurality of upper contacts are electrically connected to a plurality of upper connecting pipes, and the plurality of upper contacts are distributed sequentially from front to back and located above a plurality of solid-sealing poles;

[0011] A plurality of disconnect switches are driven to rotate by a drive shaft and are arranged sequentially between a plurality of solid-sealed poles and a plurality of upper contacts. The two ends of the disconnect switches are bent together and are respectively set as conductive ends.

[0012] A plurality of conductive elements, one end of which is connected to a plurality of the solid-sealed poles and located inside the insulating cover, and the other end of which is folded along the outer wall of the insulating cover and / or the solid-sealed poles to be distributed in front and behind the corresponding plurality of disconnecting switches. The other end of the plurality of conductive elements forms a short contact with a small portion exposed outside the insulating cover and a long contact with a large portion exposed outside the insulating cover. The long contact is connected to the inner wall of the gas box through the insulating element.

[0013] A plurality of grounding contacts; the disconnecting switch is configured to rotate to the two conductive ends respectively conductively connect the upper contact and the corresponding short contact and long contact, or respectively conductively connect the grounding contact and the corresponding short contact and long contact, or be left suspended.

[0014] Furthermore, the number of the solid-sealed pole, upper contact, disconnecting switch, grounding contact, and conductive element is set to three. The conductive element is designed as a long and flat structure. The other end of the conductive element on the middle side extends upward to form a short contact corresponding to the disconnecting switch on the middle side. The other end of the conductive element on the left side folds forward along the outer wall of the insulating cover and solid-sealed pole on the left side, then folds to the right to the top of the solid-sealed pole on the middle side, and finally folds upward to form a long contact corresponding to the disconnecting switch on the front side. The other end of the conductive element on the right side folds to the left along the outer wall of the insulating cover on the right side and middle side, and then folds upward to form a long contact corresponding to the disconnecting switch on the rear side. The wide side of the other end of the conductive element on the left side faces the upper and lower sides, and the wide side of the other end of the conductive element on the right side faces the front and rear sides.

[0015] Furthermore, the two long contacts distributed front and rear are connected to the inner wall of the gas box through the insulating component. The number of drive shafts is set to one and extends front and rear through the bends of the three disconnect switches. The inner walls of the gas box are respectively provided with insulating plates that rotatably connect the two ends of the drive shaft. The three upper contacts are arranged front and rear on the insulating beams connecting the inner walls of the gas box.

[0016] Furthermore, the three grounding contacts are sequentially arranged on the grounding angle steel connecting the inner wall of the gas box, and the three grounding contacts are located between the upper contacts and the solid sealing poles.

[0017] Furthermore, the number of lower connecting pipes is set to three, and the number of upper connecting pipes is set to six, which are distributed in pairs one after the other. The near ends of the two pairs of upper connecting pipes are connected together to the corresponding upper contacts, and the far ends are respectively sealed and connected through the left and right side walls of the gas box.

[0018] Furthermore, inside the solid-sealed pole, a vacuum interrupter is sequentially arranged in the direction away from the conductive element, and an insulating pull rod that is driven laterally by an external driving device and whose one end is inserted into the moving end of the vacuum interrupter through a moving end conductor. The stationary sidewall of the vacuum interrupter is provided with a stationary end conductor that is electrically connected to one end of the conductive element and the other end corresponds to one end of the insulating pull rod. The moving end conductor is connected to a flexible connection whose one end is linked with the insulating pull rod, and the other end of the flexible connection is electrically connected to one end of the lower wiring pipe.

[0019] Furthermore, the bottom of the solid-sealed pole protrudes downward and has a conductive part that penetrates the bottom wall of the gas box. The bottom of the conductive part is pressed against the bottom wall of the gas box and sealed by a sealing ring. The conductive part has a connecting conductor and a universal connector whose upper end is sealed and inserted into the conductive part and connected to the lower end of the connecting conductor. The other end of the flexible connection is conductively screwed to the upper end of the connecting conductor. The lower connecting pipe includes a lower sleeve and a lower conductor passing through the lower sleeve. The lower end of the universal connector is exposed on the lower side of the gas box and is used to fit the upper end of the lower sleeve and the upper end of the lower conductor. The upper end of the lower sleeve is pressed against the bottom of the gas box by the sleeve mounting plate, and the lower end extends downward and is laterally folded.

[0020] Therefore, the beneficial effects of this utility model are:

[0021] 1. While maintaining the left-right distribution of the solid-sealed poles, by sequentially distributing several upper contacts and several disconnecting switches in a front-back manner, with the disconnecting switches and upper contacts sequentially distributed above the solid-sealed poles, the components inside the gas box are concentrated in the space above the solid-sealed poles. This shortens the front-back width of the gas box. Furthermore, the bent design of the disconnecting switches not only shortens the vertical and horizontal movement height required for rotation but also reduces the insulation distance required when suspended. Therefore, this distribution does not increase the left-right width of the gas box and also reduces the space required for installing the disconnecting switches, i.e., reducing the distance between the upper contacts, disconnecting switches, and short and long contacts, thereby compressing the height of the gas box. Based on this, by designing the conductive components as a structure that folds along the outer wall of the insulating cover and / or the solidified pole, not only can several disconnecting switches be sequentially distributed front and back at the other end of the conductive components, but the front-back and vertical space occupied by the conductive components can also be minimized. This allows the placement of the conductive components to maintain the overall height of the gas box. Furthermore, the insulating cover insulates one end of the conductive components, and the insulating components insulate the other end, which is mostly exposed outside the insulating cover. This allows the conductive components to directly replace the existing insulated tube-insulated transition conductors as the transition contacts of the solidified poles, avoiding the need to increase the gas box height due to the large amount of internal space occupied by the insulating tubes. In summary, the above structures together achieve the beneficial effect of reducing the front-back width and vertical height of the gas box while maintaining the same lateral width, thereby improving the structural compactness of the internal components and reducing the overall cost of the switchgear.

[0022] 2. By designing the conductive components as long and flat structures, and folding the other ends of the conductive components on the left and right sides so that the wide side faces the top and bottom, and the wide side faces the front and back, respectively, the long contacts that are mostly exposed outside the insulating cover after folding only occupy a small portion of the top and bottom and front and back spaces with the narrow side. Its impact on the height and front and back width of the gas box is negligible. Thus, by setting the conductive components, not only can the drawback of existing insulating tubes occupying a lot of space be eliminated, but the gas box specifications can also be basically unaffected, greatly improving the practicality of the conductive components and the compactness of the structural distribution.

[0023] 3. The long contact, drive shaft and upper contact are insulated by insulating components, insulating plates and insulating beams respectively. This improves the insulation safety inside the gas box while improving the compactness of the internal component structure, and also improves the installation stability of the long contact, drive shaft and upper contact.

[0024] 4. The existing grounding contacts distributed at the rear of the gas box are changed to be distributed at the front and back and located between several upper contacts and several solid-sealed poles, so as to further reduce the front and back width of the gas box without affecting the overall height of the gas box, and further improve the structural compactness of the internal components of the gas box.

[0025] 5. By setting up several side-distributed upper wiring pipes, the vertical space occupied by the switch cabinet as a whole can be shortened, and by setting up six upper wiring pipes distributed on the left and right, the wiring flexibility of the switch cabinet can be improved.

[0026] 6. A universal connector is used to seal the upper end of the lower sleeve to the air box. Furthermore, the sealing ring ensures that the lower end of the conductive part is pressed tightly against the bottom of the air box and is insulated and sealed, so that the air box will not leak when the lower sleeve is removed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a compact switchgear after removing part of the gas box sidewall.

[0028] Figure 2 This is a cross-sectional view of a compact switch cabinet.

[0029] Figure 3 This is a cross-sectional view of the solid-sealed pole.

[0030] Figure 4 This is a rear view of a compact switchgear with the rear wall of the gas chamber removed and the disconnecting switch in a conductive connection state between the upper contact and the corresponding short and long contacts.

[0031] Figure 5 This is a rear view of a compact switchgear with the rear wall of the gas chamber removed and the disconnecting switch in a conductive connection state with the grounding contact and the corresponding short and long contacts.

[0032] Figure 6 This is a rear view schematic diagram of a compact switchgear with the rear wall of the gas chamber removed and the disconnecting switch in a suspended state. Detailed Implementation

[0033] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0034] refer to Figure 1-6 A compact switch cabinet, comprising:

[0035] Air box 1, with several lower connecting pipes 2 and several upper connecting pipes 3 sealed to its side wall, and the air box 1 is equipped with:

[0036] Several solid-sealed poles 4 are electrically connected to the lower connecting pipe 2 and are distributed sequentially from left to right. An insulating cover 41 is provided at the front end of each solid-sealed pole 4.

[0037] A plurality of upper contacts 5 are electrically connected to a plurality of upper connecting pipes 3 respectively, and the plurality of upper contacts 5 are distributed in sequence and located above a plurality of solid-sealing poles 4;

[0038] A plurality of disconnecting switches 6 are driven to rotate by a drive shaft 7 and are arranged sequentially between a plurality of solid-sealed poles 4 and a plurality of upper contacts 5. The two ends of the disconnecting switches 6 are bent together and the two ends are respectively set as conductive ends 61.

[0039] A plurality of conductive elements 8 have one end connected to a plurality of the solidified poles 4 and located inside the insulating cover 41, and the other end folded along the outer wall of the insulating cover 41 and / or the solidified poles 4 to the bottom of a plurality of disconnecting switches 6 distributed sequentially front to back. The other end of the plurality of conductive elements 8 forms a short contact 81 with a small portion exposed outside the insulating cover 41 and a long contact 82 with most of the portion exposed outside the insulating cover 41. The long contact 82 is connected to the inner wall of the gas box 1 through an insulating element 11; specifically, the insulating element 11 is an insulator.

[0040] A plurality of grounding contacts 9; the disconnecting switch 6 is used to rotate to the two conductive ends 61 to electrically connect the upper contact 5 and the corresponding short contact 81 and long contact 82 respectively, or to electrically connect the grounding contact 9 and the corresponding short contact 81 and long contact 82 respectively, or to leave it suspended.

[0041] The above structure, while maintaining the left-right distribution of the solid-sealed poles 4, distributes several upper contacts 5 and several disconnecting switches 6 sequentially front-back, with the disconnecting switches 6 and upper contacts 5 sequentially distributed above the solid-sealed poles 4. This concentrates the components inside the gas box 1 in the space above the solid-sealed poles 4, thereby shortening the front-back width of the gas box 1. Furthermore, the bent arrangement of the disconnecting switches 6 not only shortens the vertical and horizontal movement height required for rotation but also shortens the insulation distance required when suspended. This distribution does not increase the left-right width of the gas box 1 and also reduces the space required for installing the disconnecting switches 6, i.e., reducing the distance between the upper contacts 5, disconnecting switches 6, and short contacts 81 and long contacts 82, thereby compressing the height of the gas box 1. Based on this, by designing the conductive element 8 as a structure that folds along the outer wall of the insulating cover 41 and / or the solidified pole 4, not only can several disconnecting switches 6 be sequentially distributed front and back at the other end of the conductive element 8, but the front-back and vertical spaces occupied by the conductive element 8 can also be minimized. This allows the placement of the conductive element 8 to not affect the overall height of the gas box 1. Furthermore, the insulating cover 41 insulates one end of the conductive element 8, and the insulating element 11 insulates the other end of the conductive element 8, which is mostly exposed outside the insulating cover 41. This allows the conductive element 8 to directly replace the existing insulating tube-insulated transition conductor as the transition contact of the solidified pole 4, avoiding the need to increase the height of the gas box 1 due to the insulating tube occupying a large amount of internal space. In summary, the above structure, while maintaining the same lateral width of the gas box 1, shortens the front-back width and vertical height of the gas box 1, thereby improving the structural compactness of the internal components of the gas box 1 and reducing the overall cost of the switch cabinet.

[0042] Specifically, the switchgear in this application is a three-phase switchgear. The number of the solid-sealed pole 4, upper contact 5, disconnecting switch 6, grounding contact 9, and conductive element 8 are all set to three, corresponding to phases A, B, and C respectively. In order to further reduce the front-to-back and vertical space occupied by the conductive element 8, the conductive element 8 is designed as a long and flat structure. The other end of the conductive element 8 on the middle side extends upward to form a short contact 81 corresponding to the disconnecting switch 6 on the middle side. The other end of the conductive element 8 on the left side is along the insulating cover on the left side. The outer wall of the 41 and the solid-sealed pole 4 is folded forward, then folded to the right above the solid-sealed pole 4 on the middle side, and finally folded upward to form a long contact 82 corresponding to the front side of the disconnecting switch 6. The other end of the conductive element 8 on the right side is folded to the left along the outer wall of the insulating cover 41 on the right and middle sides, and then folded upward to form a long contact 82 corresponding to the rear side of the disconnecting switch 6. The other end of the conductive element 8 on the left side faces the upper and lower sides, and the other end of the conductive element 8 on the right side faces the front and rear sides. The above structure, by setting the conductive element 8 as a long and flat structure, and folding the other end of the conductive element 8 on the left and right sides so that the wide side faces the top and bottom and the wide side faces the front and back respectively, makes the long contact 82, which is mostly exposed outside the insulating cover 41 after being folded, occupy only a small part of the top and bottom space and the front and back space with the narrow side. Its influence on the height and front and back width of the gas box 1 is negligible. Thus, by setting the conductive element 8, not only can the disadvantage of the existing insulating tube occupying a lot of space be eliminated, but it can also have virtually no impact on the specifications of the gas box 1, greatly improving the practicality and compactness of the conductive element 8.

[0043] To improve the insulation safety inside the gas box 1, the distal ends of the two long contacts 82, distributed front and rear, are connected to the inner wall of the gas box 1 via insulating components 11. A single drive shaft 7 extends front and rear, passing through the bends of the three disconnect switches 6. Insulating plates 12, rotatably connecting the two ends of the drive shaft 7, are respectively provided on the front and rear inner walls of the gas box 1. The three upper contacts 5 are sequentially mounted on insulating beams 13 connecting the inner walls of the gas box 1. Thus, the long contacts 82, drive shaft 7, and upper contacts 5 are insulated by the insulating components 11, insulating plates 12, and insulating beams 13, respectively. This improves the insulation safety inside the gas box 1 while maintaining a compact internal component structure, and also enhances the installation stability of the long contacts 82, drive shaft 7, and upper contacts 5.

[0044] To further reduce the front-to-back width of the gas box 1, three grounding contacts 9 are sequentially arranged on the grounding angle steel 14 connecting the inner wall of the gas box 1, and the three grounding contacts 9 are located between several upper contacts 5 and several fixed sealing poles 4. This changes the existing grounding contacts 9 distributed on the rear side of the gas box 1 to a front-to-back distribution located between several upper contacts 5 and several fixed sealing poles 4, further reducing the front-to-back width of the gas box 1 without affecting the overall height of the gas box 1, and further improving the structural compactness of the internal components of the gas box 1.

[0045] To reduce the vertical space occupied by the switchgear, three lower connecting pipes 2 and six upper connecting pipes 3 are arranged in pairs, one in front of the other. The adjacent ends of the pairs of upper connecting pipes 3 are connected together to the corresponding upper contacts 5, while the distal ends are sealed and connected through the left and right side walls of the gas box 1. Thus, the arrangement of several laterally distributed upper connecting pipes 3 shortens the vertical space occupied by the switchgear, and the arrangement of six upper connecting pipes 3 distributed on the left and right improves the wiring flexibility of the switchgear.

[0046] Specifically, inside the solid-sealed pole post 4, a vacuum interrupter 42 is arranged in sequence in the direction away from the conductive element 8, and an insulating pull rod 44 is driven laterally by an external driving device and inserted into the moving end of the vacuum interrupter 42 through a moving end conductor 43. A stationary end conductor 45 is provided through the stationary end sidewall of the vacuum interrupter 42, with one end conductively connected to one end of the conductive element 8 and the other end corresponding to one end of the insulating pull rod 44. The moving end conductor 43 is connected to a flexible connection 46 with one end linked to the insulating pull rod 44, and the other end of the flexible connection 46 is conductively connected to one end of the lower wiring pipe 2.

[0047] To achieve a seal between the lower connecting pipe 2 and the gas box 1, and a conductive connection between the lower connecting pipe 2 and the solid sealing pole 4, the bottom of the solid sealing pole 4 has a downward protruding conductive part 47 with its lower end penetrating the bottom wall of the gas box 1. The bottom of the conductive part 47 is pressed against the inner bottom wall of the gas box 1 and sealed by a sealing ring 471. The conductive part 47 has a connecting conductor 472 and a universal connector 473 with its upper end sealed and inserted into the conductive part 47 and connected to the lower end of the connecting conductor 472. The other end of the flexible connection 46 is electrically screwed to the upper end of the connecting conductor 472. The lower connecting pipe 2 includes a lower sleeve 21 and a lower conductor 22 passing through the lower sleeve 21. The lower end of the universal connector 473 is exposed on the lower side of the gas box 1 and is used to fit the upper end of the lower sleeve 21 and the upper end of the lower conductor 22. The upper end of the lower sleeve 21 is pressed against the bottom of the gas box 1 by the sleeve mounting plate 23, and the lower end extends downward and is laterally folded. Specifically, the universal connector 473 is a silicone sleeve, and the inner wall of the lower sleeve 21 is provided with a shielding mesh. The lower sleeve 21 and the lower conductor 22 are fixedly sealed together. Thus, the upper end of the lower sleeve 21 is sealed to the air box 1 through the universal connector 473, and the sealing ring 471 ensures that the lower end of the conductive part 47 is tightly pressed against the bottom of the air box 1 and is insulated and sealed, so that the air box 1 will not leak when the lower sleeve 21 is removed.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A compact switch cabinet, characterized in that, include: The air box (1) has several lower connecting pipes (2) and several upper connecting pipes (3) sealed to its side wall. The air box (1) is equipped with: Several solid-sealed poles (4) are electrically connected to the lower connecting pipe (2) and are distributed in sequence from left to right. The front end of the solid-sealed pole (4) is provided with an insulating cover (41). A plurality of upper contacts (5) are electrically connected to a plurality of upper connecting pipes (3), and the plurality of upper contacts (5) are distributed in sequence and located above a plurality of solid-sealing poles (4); A plurality of disconnect switches (6) are driven to rotate by a drive shaft (7) and are arranged sequentially between a plurality of solid-sealed poles (4) and a plurality of upper contacts (5). The two ends of the disconnect switches (6) are bent together and the two ends are respectively set as conductive ends (61). A plurality of conductive elements (8) are connected at one end to a plurality of the solid-sealed poles (4) and located inside the insulating cover (41), and at the other end are folded along the outer wall of the insulating cover (41) and / or the solid-sealed poles (4) to be distributed in front and behind the corresponding plurality of disconnecting switches (6). The other end of the plurality of conductive elements (8) forms a short contact (81) with a small part exposed outside the insulating cover (41) and a long contact (82) with most of the part exposed outside the insulating cover (41). The long contact (82) is connected to the inner wall of the gas box (1) through an insulating element (11). A number of grounding contacts (9); the disconnecting switch (6) is used to rotate to the two conductive ends (61) to electrically connect the upper contact (5) and the corresponding short contact (81) and long contact (82) respectively, or to electrically connect the grounding contact (9) and the corresponding short contact (81) and long contact (82) respectively, or to leave it suspended.

2. A compact switchgear as described in claim 1, characterized in that, The number of the solid-sealed pole (4), upper contact (5), disconnecting switch (6), grounding contact (9), and conductive element (8) is three. The conductive element (8) is a long and flat structure. The other end of the conductive element (8) on the middle side extends upward to form a short contact (81) corresponding to the disconnecting switch (6) on the middle side. The other end of the conductive element (8) on the left side is folded forward along the outer wall of the insulating cover (41) and the solid-sealed pole (4) on the left side, and then folded to the right to the middle side. Above the solid-sealed pole (4), it is finally folded upward to form a long contact (82) corresponding to the front side of the disconnecting switch (6). The other end of the conductive element (8) on the right side is folded to the left along the outer wall of the insulating cover (41) on the right and middle sides, and then folded upward to form a long contact (82) corresponding to the rear side of the disconnecting switch (6). The other end of the conductive element (8) on the left side faces the upper and lower sides, and the other end of the conductive element (8) on the right side faces the front and rear sides.

3. A compact switchgear as described in claim 2, characterized in that, The two long contacts (82) distributed front and back are connected to the inner wall of the gas box (1) through the insulating member (11) respectively. The number of the drive shaft (7) is set to one and extends front and back through the bends of the three disconnect switches (6). The inner walls of the gas box (1) are respectively provided with insulating plates (12) that rotatably connect the two ends of the drive shaft (7). The three upper contacts (5) are arranged front and back on the insulating beam (13) that connects the inner wall of the gas box (1).

4. A compact switchgear as described in claim 2, characterized in that, The three grounding contacts (9) are arranged sequentially on the grounding angle steel (14) connecting the inner wall of the gas box (1), and the three grounding contacts (9) are located between the upper contacts (5) and the solid sealing poles (4).

5. A compact switchgear as described in claim 1, characterized in that, The number of lower connecting pipes (2) is set to three, and the number of upper connecting pipes (3) is set to six, which are distributed in pairs in front and behind. The near ends of the two pairs of upper connecting pipes (3) are connected together to the corresponding upper contacts (5), and the far ends are respectively sealed and connected to the left and right side walls of the gas box (1).

6. A compact switchgear as described in claim 1, characterized in that, The solid-sealed pole (4) is provided with a vacuum interrupter (42) in sequence in the direction away from the conductive element (8), and an insulating pull rod (44) that is driven laterally by an external driving device and is inserted into the moving end of the vacuum interrupter (42) through a moving end conductor (43). The stationary sidewall of the vacuum interrupter (42) is provided with a stationary end conductor (45) that is electrically connected to one end of the conductive element (8) and the other end corresponds to one end of the insulating pull rod (44). The moving end conductor (43) is connected to a flexible connector (46) that is linked to the insulating pull rod (44) at one end. The other end of the flexible connector (46) is electrically connected to one end of the lower wiring pipe (2).

7. A compact switchgear as described in claim 6, characterized in that, The bottom of the solid-sealed pole (4) protrudes downward and has a conductive part (47) that penetrates the bottom wall of the gas box (1) at its lower end. The bottom of the conductive part (47) is pressed against the inner bottom wall of the gas box (1) and sealed by a sealing ring (471). The conductive part (47) is provided with a connecting conductor (472) and a universal connector (473) that is sealed at its upper end and inserted into the conductive part (47) and connected to the lower end of the connecting conductor (472). The other end of the flexible connection (46) is guided... The upper end of the connecting conductor (472) is electrically screwed. The lower connecting tube (2) includes a lower sleeve (21) and a lower conductor (22) passing through the lower sleeve (21). The lower end of the universal connector (473) is exposed on the lower side of the air box (1) and is used to connect the upper end of the lower sleeve (21) and the upper end of the lower conductor (22). The upper end of the lower sleeve (21) is pressed against the bottom of the air box (1) by the sleeve mounting plate (23), and the lower end extends downward and is laterally folded.

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