CN221042026U - 40.5KV switch cabinet - Google Patents

Abstract

The application discloses a 40.5kV switch cabinet, which comprises a cabinet body, wherein the cabinet body comprises a left cabinet door, a right cabinet door and a supporting component, the left cabinet door and the right cabinet door are arranged on the back surface of the cabinet body, the supporting component extends along the height direction of the cabinet body and can support the cabinet body in the height direction of the cabinet body, the supporting component is arranged on one side of the left cabinet door and the right cabinet door, which faces the inside of the cabinet body, and is positioned at the joint of the left cabinet door and the right cabinet door and can be respectively contacted with the left cabinet door and the right cabinet door.

Description

40.5KV switch cabinet

Technical Field

The application relates to the technical field of electrical switching equipment, in particular to a 40.5kV switch cabinet.

Background

In the eighteen major anti-accident measures (revisions) of the power grid of the national power grid company, the 2018 version provides that the air insulation switch cabinet with 40.5kV needs to meet the requirements that the air clearance between the phase and the relative ground is not less than 300mm and the air clearance between the charged body and the door is not less than 330 mm. At present, a 40.5kV floor type switch cabinet mainly adopts a T1400 cabinet type, and because of the limitation of the space of the switch cabinet, the air clearance between the phases and relative to the ground cannot meet the requirement of not less than 300 mm. If the width of the cabinet body is increased, after the switch cabinet is installed in place in some places with limited installation space, the rear part of the cabinet body may not be opened due to too close distance to the fixture, and the strength of the cabinet body needs to be further improved.

It can be seen that there is a need for improvements and improvements in the art.

Disclosure of utility model

In view of the above-mentioned deficiencies of the prior art, it is an object of the present application to provide a 40.5kV switchgear aimed at solving at least one of the technical problems mentioned above.

In order to achieve the above purpose, the application adopts the following technical scheme:

The application discloses a 40.5kV switch cabinet, which comprises a cabinet body, wherein the cabinet body comprises a left cabinet door, a right cabinet door and a supporting component, the left cabinet door and the right cabinet door are arranged on the back surface of the cabinet body, the supporting component extends along the height direction of the cabinet body and can support the cabinet body in the height direction of the cabinet body, and the supporting component is arranged on one side, facing the interior of the cabinet body, of the left cabinet door and the right cabinet door, is positioned at the joint of the left cabinet door and the right cabinet door and can be respectively contacted with the left cabinet door and the right cabinet door.

In some embodiments of the present application, the support assembly includes a cabinet door support, a first support and a second support, where the cabinet door support is disposed on a side of the left cabinet door and the right cabinet door facing the interior of the cabinet body, extends along a width direction of the cabinet body, and is capable of supporting upper portions of the left cabinet door and the right cabinet door; the first support piece is provided with first end and second end, the bottom of the cabinet body is provided with the bottom plate, first end with the bottom plate is connected, the second end with cabinet door support piece is connected, second support piece with first support piece is connected, is located the bottom plate with between the cabinet door support piece, just second support piece's one end orientation left cabinet door extends, and the other end orientation right cabinet door extends.

In some embodiments of the application, the switch cabinet further comprises an interlocking component, wherein the interlocking component is arranged on the inner side of the cabinet body and used for limiting the closing sequence of the left cabinet door and the right cabinet door.

In some embodiments of the present application, the interlocking assembly includes a first interlocking member, a second interlocking member and an interlocking mechanism, the first interlocking member is disposed on a side of the left cabinet door facing the interior of the cabinet body, the second interlocking member is disposed on a side of the right cabinet door facing the interior of the cabinet body, the second interlocking member and the first interlocking member are disposed opposite to each other, the interlocking mechanism is disposed on the first supporting member in a penetrating manner, and the interlocking mechanism can move toward the second interlocking member to release the blocking of the first interlocking member, or can move in a direction away from the second interlocking member to block the first interlocking member.

In some embodiments of the present application, the first interlocking member includes a first connection portion and a first limiting portion, the first connection portion is connected to the left cabinet door, the first limiting portion is connected to the first connection portion, and is disposed in a moving direction of the interlocking mechanism, and when the interlocking mechanism moves toward the first interlocking member, the interlocking mechanism can abut against the first limiting portion to block the left cabinet door from being closed.

In some embodiments of the present application, the second interlocking piece includes a second connection portion and a second limiting portion, the second connection portion is connected to the right cabinet door, the second limiting portion is connected to the second connection portion, a limiting protrusion protruding toward the interlocking mechanism is formed on a side of the second limiting portion, which is close to the first interlocking piece, and when the right cabinet door is closed, the limiting protrusion can contact with the interlocking mechanism to drive the interlocking mechanism to move along a direction away from the first interlocking piece, so as to release the limitation of the first interlocking piece.

In some embodiments of the present application, a side of the limiting protrusion, which contacts the interlocking mechanism, is provided as a slope, and the slope is inclined from a side away from the right cabinet door to a side close to the right cabinet door.

In some embodiments of the present application, a first flange and a second flange are formed on a side of the first support facing the cabinet body, the first flange and the second flange are spaced apart, one end of the interlocking mechanism extends toward the first interlocking member through the first flange, and the other end of the interlocking mechanism extends toward the second interlocking member through the second flange.

In some embodiments of the present application, the interlocking mechanism includes a first shaft body, a second shaft body, a connecting rod, an elastic member and a first limiting member, where the first shaft body and the second shaft body are disposed in parallel, the first shaft body is disposed at one end of the interlocking mechanism near the first interlocking member, on one side of the first flange facing the first interlocking member, the second shaft body is disposed at one end of the interlocking mechanism near the second interlocking member, on one side of the second flange facing the second interlocking member, at least one connecting rod is disposed, one end of the connecting rod is connected to the first shaft body, the other end of the connecting rod is connected to the second shaft body, the elastic member is sleeved on the connecting rod, one end of the elastic member facing the second interlocking member is abutted to one side of the second flange far from the second interlocking member, the first limiting member is disposed on the connecting rod, and one end of the first limiting member far from the second interlocking member is abutted to one end of the elastic member.

In some embodiments of the application, the interlocking mechanism further includes a second limiting member disposed between the first limiting member and the first flange for limiting a distance that the link moves toward the first interlocking member.

In some embodiments of the application, a buffer is disposed between the elastic member and the second flange, between the elastic member and the first limiting member, and between the second limiting member and the first flange.

The beneficial effects are that:

According to the 40.5kV switch cabinet provided by the application, the left cabinet door and the right cabinet door are arranged on the back of the cabinet body, so that the space required by opening the back of the switch cabinet is reduced, and the limitation on the installation space of the switch cabinet is reduced; in addition, the supporting component is arranged to support the height direction of the cabinet body, so that the strength of the cabinet body is improved, the width of the switch cabinet can be expanded, and the distribution distance between electrified bodies in the cabinet body along the width direction of the cabinet body can be increased; the supporting component is arranged between the left cabinet door and the right cabinet door, contacts with the left cabinet door and the right cabinet door, improves the stress uniformity of the cabinet body, and can limit the inner sides of the closed left cabinet door and right cabinet door, and improves the tightness of the switch cabinet.

Drawings

Fig. 1 is a schematic structural diagram of a left cabinet door and a right cabinet door of a 40.5kV switchgear according to an embodiment of the present application when the left cabinet door and the right cabinet door are closed.

Fig. 2 is a schematic connection diagram of a left cabinet door and a right cabinet door of a 40.5kV switchgear according to an embodiment of the present application when the left cabinet door and the right cabinet door are closed.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is a schematic structural diagram of a support assembly according to an embodiment of the application.

Fig. 5 is a schematic structural diagram of a first interlocking member, a second interlocking member and an interlocking mechanism when a right cabinet door of a 40.5kV switchgear provided in an embodiment of the application is not closed.

Fig. 6 is an enlarged schematic structural view of the first interlocking member, the second interlocking member and the interlocking mechanism in fig. 5.

Fig. 7 is a schematic structural diagram of a first interlocking member, a second interlocking member and an interlocking mechanism when a right cabinet door of a 40.5kV switchgear provided by an embodiment of the application is closed.

Fig. 8 is an enlarged schematic view of the first interlocking member, the second interlocking member and the interlocking mechanism in fig. 7.

Fig. 9 is a schematic structural diagram of an interlocking mechanism according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a switch cabinet according to an embodiment of the present application.

Description of main reference numerals: 1. a left cabinet door; 11. a third flange; 2. a right cabinet door; 21. a fourth flange; 3. a support assembly; 31. a first support; 311. a first flange; 312. a second flange; 32. a second support; 33. a cabinet door support; 4. a top plate; 5. a bottom plate; 6. an interlock assembly; 61. a first interlocking member; 611. a first connection portion; 612. a first limit part; 62. a second interlock; 621. a second connecting portion; 622. a second limit part; 6221. a limit protrusion; 6222. an inclined plane; 63. an interlocking mechanism; 631. a first shaft body; 632. a second shaft body; 633. a connecting rod; 634. an elastic member; 635. a first limiting member; 636. a second limiting piece; 637. a buffer member; 7. a rear upper cabinet door;

100. A cabinet body; 110. a bus bar chamber; 120. a cable chamber; 130. an instrument room; 140. a handcart room; 200. a main bus; 300. a branch bus; 400. a grounding system; 500. a grounding switch; 600. a circuit breaker trolley; 610. and (5) a static contact arm.

Detailed Description

The application provides a 40.5kV switch cabinet, which is further described in detail below with reference to the accompanying drawings and examples in order to make the purposes, the technical schemes and the effects of the application clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the purchase standard Q/GDW 13088.1-2018 of the high-voltage switch cabinet, the 40.5kV switch cabinet mainly relates to 1250A and 2500A two-gear current, and the external insulation of the 40.5kV switch cabinet needs to meet the condition that the interphase and air clear distance is not less than 300mm and the air clear distance from an electrified body to a door is not less than 330mm; if the fixed insulation packaging or the vulcanization coating technology is adopted, the requirements of the inter-phase and relative air clearance distance of the electrified body of the switch cabinet can be properly reduced to not less than 240mm.

At present, a newly installed switch cabinet prohibits the use of an insulating partition board, in order to improve the insulating performance of the switch cabinet, copper bars in 2500A current-carrying switch cabinets produced by most factories on the market are treated by a vulcanization process, the vulcanization thickness of the copper bars is required to be within the range of 3.5+/-0.5 mm, the vulcanization thickness of the copper bars can only be realized by one vulcanization process in the conventional vulcanization process, and the requirement of the copper bars on the vulcanization thickness is met by a secondary vulcanization process, but the secondary vulcanization process is equivalent to the formation of two layers of coatings on the surfaces of the copper bars, and the risk of peeling and bulge exists in long-time use.

The existing 40.5kV floor type switch equipment generally adopts a T1400 cabinet type, namely the width of the cabinet body 100 is 1400mm, and is limited by the internal space of the switch cabinet, so that the requirements of the interphase and the relative ground air clearance of the electrified body of the switch cabinet can not be met under the condition that the technologies of insulating encapsulation, vulcanization and the like are not adopted.

The application provides a 40.5kV switch cabinet, which adopts a T1680 cabinet type, namely a cabinet body 100 of the switch cabinet has the width of 1680mm, compared with a T1400 type switch cabinet with the width of 1400mm of the cabinet body 100, the T1680 type switch cabinet has larger installation space in the cabinet body 100, and increases the arrangement distance of charged bodies in the cabinet body 100 along the width direction of the cabinet body 100, thereby increasing the phase-to-phase distance of the charged bodies along the width direction.

The size of the switchgear has a very important influence on whether the switchgear can be operated safely and stably. If the size is smaller, the insulation of the product has higher requirements, and the insulation is mainly expressed in the aspects of pipe sleeves, contact boxes, bus surface insulation treatment and the like; if a larger size is selected, there is a higher demand for manufacturing the product, mainly in terms of interchangeability of the cart, reliability of interlocking, strength of the cabinet 100, and the like.

Referring to fig. 1, fig. 2, fig. 4, fig. 5 and fig. 7, specifically, the switch cabinet includes a cabinet body 100 and an electrical device disposed in the cabinet body 100, where the cabinet body 100 includes a left cabinet door 1, a right cabinet door 2 and a supporting component 3, the left cabinet door 1 and the right cabinet door 2 are disposed on the back of the cabinet body 100, two ends of the supporting component 3 extend along the height direction of the cabinet body 100, and can support the cabinet body 100 in the height direction of the cabinet body 100, and the supporting component 3 is disposed on one side of the left cabinet door 1 and the right cabinet door 2 facing the interior of the cabinet body 100 and is located at a connection position of the left cabinet door 1 and the right cabinet door 2, and can contact with the left cabinet door 1 and the right cabinet door 2 respectively.

As shown in fig. 10, a bus bar compartment 110, a cable compartment 120, an instrument compartment 130, and a cart compartment 140 are formed in the cabinet 100 by partitions. The three-phase main bus 200 is arranged in the bus bar chamber 110, and the bus bar chamber 110 is arranged at a position close to the back of the cabinet body 100, so that maintenance is facilitated by opening the back of the cabinet body 100. The cable chamber 120 is disposed below the bus bar chamber 110 to facilitate connection of electrical devices between the bus bar chamber 110 and the cable chamber 120. The cable room 120 is provided therein with a grounding system 400, the grounding system 400 is connected with a grounding switch 500, and the grounding switch 500 is also interlocked with a circuit breaker handcart 600 for ensuring the grounding safety of the switch cabinet. The circuit breaker trolley 600 is disposed in the trolley compartment 140, and the stationary contact arm 610 of the circuit breaker trolley 600 extends into the bus bar compartment 110, and is connected with the main bus bar 200 through the branch bus bars 300, respectively; the instrument room 130 and the handcart room 140 are arranged in the cabinet body 100 at positions close to the front surface of the cabinet body 100, so that the switch cabinet can be conveniently operated, and the handcart can conveniently enter and exit the cabinet body 100.

Above-mentioned cubical switchboard through set up left cabinet door 1 and right cabinet door 2 at the back of the cabinet body 100, has reduced the width of whole door body, has reduced the restriction of installation space to cabinet body 100 switch door, has also reduced the restriction to cabinet body 100 width for the cabinet body 100 is inside to have sufficient width to arrange electrified body, guarantees that the inter-phase of electrified body and relative ground air clear distance in the cubical switchboard accords with the requirement. The supporting component 3 has a certain supporting effect in the height direction of the cabinet body 100 and is positioned between the left cabinet door 1 and the right cabinet door 2, so that the cabinet body 100 is ensured to have enough strength.

As shown in fig. 4, the support assembly 3 comprises a cabinet door support 33, a first support 31 and a second support 32; the cabinet door supporting piece 33 is arranged on one side of the left cabinet door 1 and the right cabinet door 2 facing the interior of the cabinet body 100 and extends along the width direction of the cabinet body 100, and the cabinet door supporting piece 33 is arranged on one side of the first supporting piece 31 facing the cabinet door and can support the upper parts of the left cabinet door 1 and the right cabinet door 2; the first supporting member 31 is provided with a first end extending toward the bottom of the cabinet 100 and connected to the bottom plate 5 of the cabinet 100, and a second end extending toward the top of the cabinet 100 and connected to the cabinet door supporting member 33; the second support member 32 is connected with the first support member 31, is located between bottom plate 5 and cabinet door support member 33, and the one end of second support member 32 extends towards left cabinet door 1, and the other end extends towards right cabinet door 2 for first support member 31 can support cabinet body 100 in the direction of height of cabinet body 100, further improves cabinet body 100's intensity.

Further, the top of the cabinet body 100 is provided with a top plate 4, a rear upper cabinet door 7 is further provided between the top plate 4 and the tops of the left cabinet door 1 and the right cabinet door 2, the upper portion of the cabinet door supporting member 33 extends to one side of the rear upper cabinet door 7 facing the inside of the cabinet body 100, and the closed rear upper cabinet door 7 can be supported.

In an embodiment, riveting nuts are arranged at positions of the cabinet body 100 corresponding to the peripheral edges of the rear upper cabinet door 7, and the peripheral edges of the rear upper cabinet door are connected with the riveting nuts through bolts so as to fix the rear upper cabinet door 7. The rear upper cabinet door 7 can be detached from the cabinet body 100 to overhaul electrical elements in the cabinet body 100, the rear upper door 7 is of a sealing plate structure, the space required for opening the rear upper cabinet door 7 is saved, and the limit on the installation space of the switch cabinet is reduced.

In some embodiments of the application, the first support 31 is detachably connected to the bottom panel 5 and the top panel of the cabinet 100, facilitating field maintenance of electrical equipment within the switchgear. The bottom of the first supporting member 31 is fixed to the bottom plate 5 by square-diameter bolts and nuts, the second supporting member 32 is riveted with nuts, the first supporting member 31 is fixed to the second supporting member 32 by countersunk bolts, the cabinet door supporting member 33 is riveted with nuts, and the top of the first supporting member 31 is connected to the cabinet door supporting member 33 by socket head cap bolts.

To improve the safety of the switchgear, the left cabinet door 1 is interlocked with the grounding switch 500, so that the switchgear can be opened only under the condition of closing the switch through grounding. As shown in fig. 3, a third flange 11 is disposed on one side of the left cabinet door 1 close to the right cabinet door 2, a fourth flange 21 is disposed on one side of the right cabinet door 2 close to the left cabinet door 1, and when the left cabinet door 1 and the right cabinet door 2 are closed, the third flange 11 covers the outer side of the fourth flange 21, so that the right cabinet door 2 can be opened only after the left cabinet door 1.

As shown in fig. 5 and 7, the switch cabinet further includes an interlocking assembly 6, and the interlocking assembly 6 is disposed at the inner side of the cabinet body 100, for limiting the closing sequence of the left cabinet door 1 and the right cabinet door 2; so that the left cabinet door 1 can be closed only when the right cabinet door 2 is closed, and the switch cabinet is prevented from entering the running state when the left cabinet door 1 and the right cabinet door 2 are completely closed.

As shown in fig. 6 and 8, in particular, the interlocking assembly 6 includes a first interlocking member 61, a second interlocking member 62 and an interlocking mechanism 63, the first interlocking member 61 is disposed on a side of the left cabinet door 1 facing the inside of the cabinet 100, the second interlocking member 62 is disposed on a side of the right cabinet door 2 facing the inside of the cabinet 100, the second interlocking member 62 and the first interlocking member 61 are disposed opposite to each other, a through hole is provided in the first supporting member 31, the interlocking mechanism 63 is disposed on the first supporting member 31 through the through hole and can move left and right along the first supporting member 31, a length of the interlocking mechanism 63 in a direction between the first interlocking member 61 and the second interlocking member 62 is greater than a distance between the first interlocking member 61 and the second interlocking member 62, and the interlocking mechanism 63 can move toward the second interlocking member 62 to release the blocking of the first interlocking member 61, or the interlocking mechanism 63 can move in a direction away from the second interlocking member 62 to block the first interlocking member 61. When both the left cabinet door 1 and the right cabinet door 2 are opened, if the left cabinet door 1 is closed first, the interlocking mechanism 63 can block the first interlocking piece 61, so that the left cabinet door 1 cannot be closed completely; if the right cabinet door 2 is closed first, the second interlocking member 62 drives the interlocking mechanism 63 to move rightward in the closing process of the right cabinet door 2, so that the interlocking mechanism 63 is gradually far away from the first interlocking member 61, and after the right cabinet door 2 is completely closed, the interlocking mechanism 63 moves to a position between the first interlocking member 61 and the first supporting member 31, so that the blocking of the first interlocking member 61 is released, and at the moment, the left cabinet door 1 can be smoothly closed, and the switch cabinet can enter the running state under the condition of complete closing.

As shown in fig. 6, the first interlocking member 61 includes a first connection portion 611 and a first limiting portion 612, the first connection portion 611 is connected to the left cabinet door 1, the first limiting portion 612 is connected to the first connection portion 611, and is disposed in a moving direction of the interlocking mechanism 63 and perpendicular to an inner side of the left cabinet door 1, when the right cabinet door 2 is opened, the right cabinet door 2 does not limit the interlocking mechanism 63 any more, the interlocking mechanism 63 moves toward the first interlocking member 61, and at this time, if the left cabinet door 1 is closed, the interlocking mechanism 63 is located in front of a closing track of the left cabinet door 1, and the interlocking mechanism 63 can abut against a side of the first limiting portion 612 away from the first connection portion 611, thereby blocking the closing of the left cabinet door 1. The structure can ensure the closing sequence of the left cabinet door 1 and the right cabinet door 2, and is combined with the interlocking grounding switch 500 of the left cabinet door 1, so that the operation safety of the switch cabinet is ensured.

As shown in fig. 8, the second interlocking piece 62 includes a second connection portion 621 and a second limiting portion 622, the second connection portion 621 is connected to the right cabinet door 2, the second limiting portion 622 is connected to the second connection portion 621, a limiting protrusion 6221 protruding toward the interlocking mechanism 63 is formed on a side of the second limiting portion 622, which is close to the first interlocking piece 61, when the right cabinet door 2 is closed, the limiting protrusion 6221 can contact with the interlocking mechanism 63 to drive the interlocking mechanism 63 to move along a direction away from the first interlocking piece 61, so as to release the limitation of the first interlocking piece 61, realize linkage between the left cabinet door 1 and the right cabinet door 2, and have a simple structure, be convenient to operate, and improve the interlocking safety of the switch cabinet.

As shown in fig. 6 and 8, a side, which is contacted with the interlocking mechanism 63, of the limiting protrusion 6221 is set to be an inclined surface 6222, and the inclined surface 6222 is inclined from a side far away from the right cabinet door 2 to a side close to the right cabinet door 2, so that the interlocking mechanism 63 can slide along the inclined surface 6222 in the moving process, and the moving stability of the interlocking mechanism 63 and the closing stability of the right cabinet door 2 are improved. When the right cabinet door 2 is completely closed, the limiting protrusion 6221 is clamped on the interlocking mechanism 63, so that the interlocking mechanism 63 is prevented from moving left and right.

The first support 31 is formed with a first flange 311 and a second flange 312 toward one side in the cabinet 100, the first flange 311 and the second flange 312 being spaced apart, one end of the interlocking mechanism 63 passing through the first flange 311 to extend toward the first interlocking member 61, and the other end of the interlocking mechanism 63 passing through the second flange 312 to extend toward the second interlocking member 62. The first flange 311 and the second flange 312 form two balanced supports in the extending direction of the interlocking mechanism 63, improving the stability of the movement of the interlocking mechanism 63.

As shown in fig. 6, 8 and 9, the interlocking mechanism 63 includes a first shaft body 631, a second shaft body 632, a connecting rod 633, an elastic member 634 and a first limiting member 635, where the first shaft body 631 and the second shaft body 632 are disposed in parallel, the first shaft body 631 is disposed at an end of the interlocking mechanism 63 near the first interlocking member 61, on a side of the first flange 311 toward the first interlocking member 61, the second shaft body 632 is disposed at an end of the interlocking mechanism 63 near the second interlocking member 62, on a side of the second flange 312 toward the second interlocking member 62, at least one connecting rod 633 is disposed, one end of the connecting rod 633 is connected to the first shaft body 631, the other end of the connecting rod 633 is connected to the second shaft body 632, the elastic member 634 is sleeved on the connecting rod 633, one end of the elastic member 634 toward the second interlocking member 62 is abutted with a side of the second flange 312 away from the second interlocking member 62, the first limiting member 635 is disposed on the connecting rod 633, and the first limiting member 635 is abutted with an end of the elastic member 634 away from the second interlocking member 62. When the right cabinet door 2 is closed, the limiting protrusion 6221 on the second interlocking member 62 contacts with the first shaft body 631, and drives the first shaft body 631 to move rightward, so as to release the limit of the left cabinet door 1. The first shaft body 631 and the second shaft body 632 can ensure that both ends of the interlocking mechanism 63 are always positioned outside the first flange 311 and the second flange 312, and ensure the interlocking action of the interlocking mechanism 63 on the left cabinet door 1 and the right cabinet door 2. Illustratively, the first shaft body 631 includes a socket head cap bolt, a hexagonal lock nut, and a shaft sleeve, a screw portion of the socket head cap bolt passes through the connection rod 633 and is locked with the hexagonal lock nut, the shaft sleeve is sleeved on the screw portion of the socket head cap bolt, and is located between the nut portion of the socket head cap bolt and the hexagonal lock nut, and the shaft sleeve can rotate relative to the socket head cap bolt, so that when the first shaft body 631 contacts the first interlocking member 61, friction between the first shaft body 631 and the first interlocking member 61 is reduced, and loss between the first shaft body 631 and the first interlocking member 61 is reduced. The second shaft body 632 has the same structure as the first shaft body 631, and can reduce friction loss between the first shaft body 631 and the second interlocking member 62, and also improve the movement stability of the interlocking mechanism 63. In the present embodiment, two links 633 are provided, and the two links 633 are provided in parallel between the first shaft 631 and the second shaft 632, so that the strength of the interlocking mechanism 63 can be improved. The elastic member 634 may adopt a compression spring, when the interlocking mechanism 63 moves towards the second interlocking member 62, due to the limiting action of the second flange 312 and the first limiting member 635, the elastic member 634 compresses to store elastic potential energy, and when the second interlocking member 62 releases the limiting action of the interlocking mechanism 63, the elastic member 634 resets under the elastic action to drive the interlocking mechanism 63 to move towards the first interlocking member 61, so as to block the left cabinet door 1.

The interlocking mechanism 63 further includes a second limiting member 636, where the second limiting member 636 is disposed between the first limiting member 635 and the first flange 311, and is used to limit the distance that the connecting rod 633 moves toward the first interlocking member 61, so as to ensure that the connecting rod 633 between the second flange 312 and the second interlocking member 62 has a sufficient length, so that when the right cabinet door 2 is closed, the limiting protrusion 6221 can be inserted between the first shaft body 631 and the first flange 311, so as to drive the first shaft body 631 to move rightward.

Illustratively, the connecting rod 633 is provided with two through holes perpendicular to the axial direction, into which the first and second stoppers 635 and 636 are inserted. The first stop 635 and the second stop 636 are cotter pins, which are low in cost and convenient to replace.

Preferably, a buffer 637 is disposed between the elastic member 634 and the second flange 312, between the elastic member 634 and the first stop 635, and between the second stop 636 and the first flange 311, so as to reduce rigid friction between the elastic member 634 and the second flange 312, between the elastic member 634 and the first stop 635, and between the second stop 636 and the first flange 311. The buffer 637 is sleeved on the connecting rod 633 and replaced by a flat washer.

In summary, the left cabinet door and the right cabinet door are arranged on the back of the cabinet body, so that the space required by opening the back of the switch cabinet is reduced, and the limit on the installation space of the switch cabinet is reduced; the height direction of the cabinet body is supported by the supporting component, so that the strength of the cabinet body is improved, the width of the switch cabinet can be expanded, the distribution distance between charged bodies in the cabinet body along the width direction of the cabinet body can be increased, and the requirements of inter-phase and relative air distance between the charged bodies in the switch cabinet can be met; the supporting component is arranged between the left cabinet door and the right cabinet door, contacts with the left cabinet door and the right cabinet door, improves the stress uniformity of the cabinet body, and can limit the inner sides of the closed left cabinet door and right cabinet door, and improves the tightness of the switch cabinet.

In addition, the left cabinet door is interlocked with the grounding switch, the left cabinet door is interlocked with the right cabinet door, the switch cabinet can be opened under the condition of grounding closing, the switch cabinet can be operated under the condition that the left cabinet door and the right cabinet door are completely closed, and the operation safety of the switch cabinet is guaranteed.

It will be understood that equivalents and modifications will occur to those skilled in the art and are to be included within the scope of the application as defined in the following claims.

Claims (11)

1. A 40.5kV switch cabinet which is characterized by comprising a cabinet body; wherein, the cabinet body includes:

The left cabinet door and the right cabinet door are arranged on the back surface of the cabinet body;

The support component extends along the height direction of the cabinet body and can support the cabinet body in the height direction of the cabinet body, and the support component is arranged on one side of the left cabinet door and the right cabinet door, which faces the inside of the cabinet body, and is positioned at the joint of the left cabinet door and the right cabinet door and can be contacted with the left cabinet door and the right cabinet door respectively.

2. The 40.5kV switchgear of claim 1 wherein the support assembly comprises:

The cabinet door supporting piece is arranged on one side of the left cabinet door and the right cabinet door, which faces the inside of the cabinet body, extends along the width direction of the cabinet body and can support the upper parts of the left cabinet door and the right cabinet door;

The first support piece is provided with a first end and a second end, the bottom of the cabinet body is provided with a bottom plate, the first end is connected with the bottom plate, and the second end is connected with the cabinet door in a supporting way; and

The second support piece is connected with the first support piece and is positioned between the bottom plate and the cabinet door support piece, one end of the second support piece extends towards the left cabinet door, and the other end of the second support piece extends towards the right cabinet door.

3. The 40.5kV switchgear of claim 2 further comprising an interlock assembly disposed inside the cabinet body for limiting a closing sequence of the left and right cabinet doors.

4. A 40.5kV switchgear as claimed in claim 3, wherein the interlock assembly comprises:

the first interlocking piece is arranged on one side of the left cabinet door facing the interior of the cabinet body;

The second interlocking piece is arranged on one side of the right cabinet door facing the interior of the cabinet body, and the second interlocking piece and the first interlocking piece are oppositely arranged;

The interlocking mechanism is arranged on the first supporting piece in a penetrating mode, can move towards the second interlocking piece to release blocking of the first interlocking piece, or can move in a direction away from the second interlocking piece to block the first interlocking piece.

5. The 40.5kV switchgear of claim 4 wherein the first interlock comprises:

The first connecting part is connected to the left cabinet door;

And the first limiting part is connected with the first connecting part and is arranged in the moving direction of the interlocking mechanism, and when the interlocking mechanism moves towards the first interlocking piece, the interlocking mechanism can be abutted with the first limiting part so as to prevent the left cabinet door from being closed.

6. The 40.5kV switchgear of claim 4 wherein the second interlock comprises:

The second connecting part is connected to the right cabinet door;

The second limiting part is connected with the second connecting part, one side of the second limiting part, which is close to the first interlocking piece, is provided with a limiting protrusion protruding towards the interlocking mechanism, and when the right cabinet door is closed, the limiting protrusion can be contacted with the interlocking mechanism to drive the interlocking mechanism to move along the direction away from the first interlocking piece so as to release the limitation of the first interlocking piece.

7. The 40.5kV switchgear of claim 6, wherein a side of the limit protrusion contacting the interlocking mechanism is provided as a slope, the slope being inclined from a side away from the right cabinet door toward a side near the right cabinet door.

8. The 40.5kV switchgear of claim 4, wherein a first flange and a second flange are formed on a side of the first support member facing the inside of the cabinet body, the first flange and the second flange are spaced apart, one end of the interlocking mechanism extends toward the first interlocking member through the first flange, and the other end of the interlocking mechanism extends toward the second interlocking member through the second flange.

9. The 40.5kV switchgear of claim 8 wherein the interlock mechanism comprises:

The first shaft body and the second shaft body are arranged in parallel, the first shaft body is arranged at one end of the interlocking mechanism, which is close to the first interlocking piece, and is positioned at one side of the first flange, which faces the first interlocking piece, and the second shaft body is arranged at one end of the interlocking mechanism, which is close to the second interlocking piece, and is positioned at one side of the second flange, which faces the second interlocking piece;

The connecting rod is at least provided with one, one end of the connecting rod is connected to the first shaft body, and the other end of the connecting rod is connected to the second shaft body;

The elastic piece is sleeved on the connecting rod, and one end of the elastic piece, which faces the second interlocking piece, is abutted with one side, away from the second interlocking piece, of the second flange;

The first limiting piece is arranged on the connecting rod, and the first limiting piece is abutted with one end, away from the second interlocking piece, of the elastic piece.

10. The 40.5kV switchgear of claim 9 wherein the interlock mechanism further comprises:

The second limiting piece is arranged between the first limiting piece and the first flange and used for limiting the moving distance of the connecting rod towards the first interlocking piece.

11. The 40.5kV switchgear of claim 10, wherein a buffer is disposed between the elastic member and the second flange, between the elastic member and the first spacing member, and between the second spacing member and the first flange.