Gas-insulated switchgear convenient to assemble

Abstract

The utility model discloses an inflatable cabinet convenient to assemble, which is characterized in that the inflatable cabinet comprises two side plates, a bus and a bus hole, and the two side plates are respectively provided with a plugging assembly and a locking assembly; each inserting assembly comprises a shaft body capable of penetrating through the corresponding side plate, a circular-truncated-cone-shaped opening body with the large end coaxially connected with the shaft body, a disc body coaxially connected to the other end of the shaft body, a stress piece located on the disc body and a plurality of limiting pieces distributed along the edge of the disc body. The outer wall of the shaft body is provided with a plurality of inserting grooves distributed in the circumferential direction of the shaft body, and the distances from the bottoms of the inserting grooves to the axis of the shaft body are gradually changed in the rotating direction of the shaft body. The locking assembly comprises a locking ring, a plurality of inserting pieces distributed in the circumferential direction of the locking ring and locking springs in one-to-one correspondence with the inserting pieces, one ends of the inserting pieces stretch into an inner cavity of the locking ring, inserting holes and a sealing cover are arranged on a side plate where the locking assembly is located, and the problems that in the prior art, assembling is difficult, and connecting stability is poor are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas-filled cabinet, more particularly to a gas-filled cabinet convenient to assemble. BACKGROUND

[0002] The gas-filled cabinet is a kind of gas-insulated switchgear, and is used for power transmission in harsh environment. Since the electrical equipment in the gas-filled cabinet is encapsulated in the sealed cabinet body, and high-pressure insulating gas needs to be filled therein, in addition, the gas-filled cabinet often needs to be spliced when in use, and the splicing mode is to connect the bus bars of multiple gas-filled cabinets, so that the multiple gas-filled cabinets form parallel connection. Since high-pressure insulating gas is filled in the gas-filled cabinet, the bus bars are prone to pop out during the connection process, thereby affecting the stability of electrical connection. Furthermore, if the gas-filled cabinets arranged side by side are connected only by bus bars, the connection stability between adjacent gas-filled cabinets is poor, and the bus bars are also prone to damage, which further reduces the stability of electrical connection. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a gas-filled cabinet which is convenient to disassemble and assemble and has good connection stability.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a gas-filled cabinet convenient to assemble, comprising two oppositely arranged side plates, bus bars arranged on the two side plates respectively, and bus bar holes for inserting the bus bars.

[0005] The insertion assembly comprises a shaft body capable of penetrating the side plate and being sealed with the side plate, a prop open body in the shape of a circular truncated cone and coaxially connected to the shaft body at the large end, a disc body coaxially connected to the other end of the shaft body and having a diameter larger than that of the shaft body, a stress receiving piece positioned on the disc body and used by a user to apply force, and a plurality of limiting pieces distributed along the edge of the disc body and limiting the disc body on the side plate. A plurality of insertion slots are formed on the outer wall of the shaft body, adjacent to the prop open body and distributed along the circumferential direction of the shaft body. The distance from the slot bottom to the shaft axis gradually changes along the rotation direction of the shaft body.

[0006] The locking assembly comprises a locking ring positioned on the side plate, a plurality of inserts distributed along the circumferential direction of the locking ring and capable of moving radially along the locking ring, and a locking spring corresponding to each insert and positioned in the locking ring. One end of each of the plurality of inserts extends into the inner cavity of the locking ring. The side plate where the locking assembly is arranged is provided with an insertion hole through which the shaft body passes and coaxially arranged with the locking ring, and a sealing cover capable of blocking the communication between the insertion hole and the outside. By pushing the plurality of inserts into the locking ring through the prop open body, the inserts can be subsequently inserted into the corresponding insertion slots under the action of the locking spring. By rotating the shaft body, the inserts can be withdrawn from the insertion slots.

[0007] As a further improvement of the utility model, the end of the stress sheet in the diameter direction of the disc body is located on the circumference of the plurality of limiting members, and the rotating range of the shaft body is limited by the contact of the stress sheet and the limiting member.

[0008] As a further improvement of the utility model, the end face edge of the plurality of plug-in components extending into the inner cavity of the lock ring is rounded.

[0009] As a further improvement of the utility model, the plug-in assembly and the locking assembly are both two and are distributed along the height direction of the side plate.

[0010] The utility model discloses the beneficial effects: through the strutting body, a plurality of plug-in components are pushed into the lock ring, so that the plug-in component can be inserted into the corresponding insertion slot under the action of the locking spring subsequently, the shaft body is rotated, so that the plug-in component is withdrawn from the insertion slot, and the shaft body and the lock ring are separated subsequently, and the design can improve the stability of the bus and the bus hole plug-in compared with the prior art, effectively make up the defect that the bus is popped out of the bus hole by the gas in the gas-filled cabinet, the design of the plug-in component and the insertion slot plug-in state controlled by the rotation of the shaft body can realize the simple operation of the assembling operation between the gas-filled cabinets, and the dismounting efficiency is high, the sealed connection of the shaft body and the side plate and the design that the sealing cover covers the lock ring outside can ensure the sealing property of the gas-filled cabinet, and gas leakage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the perspective view when the utility model is in the splicing state;

[0012] Figure 2 It is the perspective view of the utility model;

[0013] Figure 3 It is the split view of the plug-in assembly and the locking assembly in the utility model.

[0014] Reference signs: 1, side plate;11, insertion hole;12, sealing cover;2, bus;3, bus hole;4, plug-in assembly;41, shaft body;42, strutting body;43, disc body;44, stress sheet;45, limiting member;46, insertion slot;5, locking assembly;51, lock ring;52, plug-in component;53, locking spring. DETAILED DESCRIPTION

[0015] The utility model will be further explained in detail in combination with the drawings and examples. Same parts are indicated with same reference numerals.

[0016] Referring to Figures 1 to 3 The utility model discloses a kind of gas-filled cabinets convenient for assembling, as shown in the drawing, it includes two opposite side plates 1, respectively set on two side plates 1 on bus 2 and the bus hole 3 for the plug-in of bus 2;

[0017] Based on the foregoing prior art, two side plates 1 are respectively provided with plug-in assemblies 4 and locking assemblies 5 capable of being plugged into each other;

[0018] The plug-in assembly 4 comprises a shaft body 41, a spreading body 42, a disc body 43, a stress piece 44 and a plurality of limiting pieces 45. The circumferential surface of a cylinder is turned, and the turned part forms the shaft body 41. The part not processed is the disc body 43. The disc body 43 is coaxial with the shaft body 41. Then, the end of the shaft body 41 not connected with the disc body 43 is further turned to process a frustum-shaped spreading body 42. The large end of the spreading body 42 is coaxially connected with the shaft body 41. Then, the end face of the disc body 43 not connected with the shaft body 41 is turned to process the stress piece 44. Two center-symmetrical insertion grooves 46 are further processed on the shaft wall of the shaft body 41. The two insertion grooves 46 are both adjacent to the spreading body 42. The distance from the groove bottom of the two insertion grooves 46 to the axis of the shaft body 41 gradually changes along the rotation direction of the shaft body 41. The number of the limiting pieces 45 is three. The three limiting pieces 45 are all Z-shaped. A through hole is formed in the side plate 1 for the shaft body 41 to penetrate. In the assembly process, a sealing ring can be sleeved on the inner wall of the through hole or the outer wall of the shaft body 41. Then, the shaft body 41 penetrates the side plate 1 from inside the cabinet body to the outside until the disc body 43 touches the top of the side plate 1. The three limiting pieces 45 are evenly distributed along the edge of the disc body 43 and positioned on the side plate 1 by bolts. The disc body 43 is limited between the limiting pieces 45 and the side plate 1. The spreading body 42 and the insertion grooves 46 are both located outside the cabinet body. The shaft body 41 can rotate relative to the side plate 1;

[0019] The locking assembly 5 comprises a locking ring 51, a plurality of insertion pieces 52 same in number with the insertion grooves 46, and a plurality of locking springs 53 same in number with the insertion pieces 52. The locking ring 51 comprises a ring body and a ring cover. The ring body is provided with two accommodating grooves. The width of the two accommodating grooves in the diameter direction of the locking ring 51 changes as small-large-small. One end of the two accommodating grooves extends to the inner wall of the ring body. The middle position of the two insertion pieces 52 is provided with a limiting part matched with the middle part of the accommodating groove. One end of the locking spring 53 is sleeved on one end of the insertion piece 52. Then, the locking spring 53 is compressed and the insertion piece 52 and the locking spring 53 are placed in the accommodating groove. Finally, the ring cover is covered on the ring body and fastened by bolts. The two insertion pieces 52 are limited in the locking ring 51 and can move along the diameter direction of the locking ring 51. An insertion hole 11 is formed in the side plate 1 used for connecting the locking ring 51. The locking ring 51 is moved into the cabinet body and coaxially positioned at the insertion hole 11. The inner diameter of the locking ring 51 is the same as the inner diameter of the insertion hole 11. Then, a sealing cover 12 is positioned on the side plate 1 by bolts and covers the outside of the locking ring 51;

[0020] In the initial state, both of the inserts 52 are pushed by the locking spring 53 to extend into the inner cavity of the locking ring 51, and the deeper position of the two inserts 52 is at the same height as the end of the insert 52 in the locking ring 51; in the process of combining the two inflatable cabinets together, the spacer body 52 first passes through the insertion hole 11 and enters the locking ring 51, and the end of the two inserts 52 is in contact with and slides along the peripheral wall of the spacer body 52, the two inserts 52 are pushed by the spacer body 52 and gradually retreat into the locking ring 51, the locking spring 53 is compressed and deformed, until the end of the two inserts 52 is separated from the spacer body 52 and moves to the insertion slot 46, the locking spring 53 restores and pushes the insert 52 to the corresponding insertion slot 46, the end of the insert 52 extends into the insertion slot 46 and is in contact with the bottom of the insertion slot 46, then the plug-in assembly 4 and the locking assembly 5 are inserted in place, the busbar 2 is stably inserted into the busbar hole 3, and the two inflatable cabinets are assembled together and cannot be disassembled; in the process of disassembling the two inflatable cabinets, the cabinet door is opened, a torsional force is applied to the stress sheet 44, the stress sheet 44, the disc body 43, the spacer body 42 and the shaft body 41 rotate as a whole relative to the side plate 1, the end of the insert 52 slides relative to the bottom of the insertion slot 46 and the insert 52 gradually retreats into the locking ring 51, the locking spring 53 is compressed, until the end of the insert 52 moves out of the corresponding insertion slot 46 and is in contact with the peripheral wall of the shaft body 41, then the two inflatable cabinets are separated, the end of the insert 52 first linearly slides relative to the peripheral wall of the shaft body 41, then slides relative to the peripheral wall of the spacer body 52, and finally separates from the spacer body 52, the insert 52 returns to the initial state under the action of the locking spring 53, and the busbar 2 exits the busbar hole 3, then the two inflatable cabinets are completely separated, and the opposite torsional force is applied to the stress sheet 44 to make the shaft body 41 return to the initial state, ready for the next combination.

[0021] The design can improve the stability of the insertion of the busbar 2 into the busbar hole 3, effectively compensate for the defect that the busbar 2 is ejected from the busbar hole 3 by the gas in the inflatable cabinet; the design of rotating the shaft body 41 to control the insertion of the insert 52 into the insertion slot 46 can realize the simplification of the assembly operation between the inflatable cabinets and has high disassembly efficiency; the sealing connection of the shaft body 41 with the side plate 1 and the design that the sealing cover 12 covers the outside of the locking ring 51 can ensure the sealing of the inflatable cabinet and avoid gas leakage.

[0022] As an improved specific embodiment, the shaft body 41 is excessively rotated with the stress sheet 44, which causes the insert 52 to be inserted into another insertion slot 46, resulting in the phenomenon that the two inflatable cabinets cannot be disassembled, in order to solve the foregoing problem, with reference to Figure 2As shown, one end of the force receiving piece 44 in the diameter direction of the disc body 43 is positioned on the circumference of the three limiting members 45, and the end of the force receiving piece 44 is located between the end portions of the two adjacent limiting members 45 buckled outside the end face of the disc body 43. When the force receiving piece 44 rotates forward or reversely, the end portion of the force receiving piece 44 will be in contact with one of the two adjacent limiting members 45 and cannot continue to rotate. This design can limit the rotation range of the shaft body 41 and avoid the excessive rotation of the shaft body 41 to cause the plug-in part 52 to be inserted into another plug-in groove 46.

[0023] As an improved embodiment, refer to Figure 3 As shown, the end face edges of the two plug-in parts 52 extending into the inner cavity of the locking ring 51 are chamfered, which can slow down the wear between the supporting body 42 and the plug-in part 52 and between the plug-in part 52 and the shaft body 41, and improve the sliding efficiency and indirectly improve the smoothness of disassembly.

[0024] As an improved embodiment, refer to Figure 1 and Figure 2 As shown, the plug-in assembly 4 and the locking assembly 5 are both two and are distributed along the height direction of the side plate 1. This design can further improve the connection stability between the two air tanks, and further, the user can continue to increase the number of the plug-in assembly 4 and the locking assembly 5 and change the distribution of the plug-in assembly 4 and the locking assembly 5 according to the size of the air tank to ensure the connection stability between air tanks of different specifications.

[0025] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. An easily assembled gas-insulated switchgear, comprising two opposing side plates (1), busbars (2) respectively disposed on the two side plates (1), and busbar holes (3) for the busbars (2) to be inserted, characterized in that: The two side plates (1) are respectively provided with a plug-in assembly (4) and a locking assembly (5) that can be plugged into each other; The plug-in assembly (4) includes a shaft (41) that can penetrate the side plate (1) and is sealed to the side plate (1), a frustum-shaped support (42) with its large end coaxially connected to the shaft (41), a disc (43) coaxially connected to the other end of the shaft (41) and with a diameter larger than the diameter of the shaft (41), a force-bearing plate (44) positioned on the disc (43) and for the user to apply force, and several limiting members (45) distributed along the edge of the disc (43) and limiting the disc (43) to the side plate (1). Several slots (46) are provided on the outer wall of the shaft (41) that are close to the support (42) and distributed along the circumference of the shaft (41). The distance from the bottom of the slots (46) to the axis of the shaft (41) gradually changes along the rotation direction of the shaft (41). The locking assembly (5) includes a locking ring (51) positioned on the side plate (1), several plugs (52) distributed along the circumference of the locking ring (51) and capable of moving radially along the locking ring (51), and a locking spring (53) corresponding to each plug (52) and located inside the locking ring (51). One end of each of the plugs (52) extends into the inner cavity of the locking ring (51). The side plate (1) where the locking assembly (5) is located is provided with a socket (11) through which the shaft (41) passes and is coaxially arranged with the locking ring (51) and a sealing cover (12) that can prevent the socket (11) from communicating with the outside. By using the spreading body (42), the several plugs (52) are pushed into the locking ring (51) so that the plugs (52) can be inserted into the corresponding slots (46) under the action of the locking springs (53). By rotating the shaft (41), the plugs (52) are removed from the slots (46).

2. The gas-insulated cabinet that is easy to assemble according to claim 1, characterized in that: At least one end of the force-bearing plate (44) in the diameter direction of the disc body (43) is located on the circumference of several limiting members (45), and the rotation range of the shaft body (41) is restricted by the contact between the force-bearing plate (44) and the limiting members (45).

3. An easily assembled gas-insulated cabinet according to claim 1 or 2, characterized in that: The edges of the end faces of several of the plugs (52) that extend into the inner cavity of the locking ring (51) are all rounded.

4. An easily assembled gas-insulated cabinet according to claim 1 or 2, characterized in that: The plug-in assembly (4) and the locking assembly (5) are both two in number and are distributed along the height direction of the side plate (1).

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