An electric GIS device capable of integrally fixing casing

Abstract

The present invention relates to the field of electric GIS equipment, specifically to an electric GIS equipment capable of fixing a casing as a whole, comprising a GIS equipment body, a four-way pipe fitting installed on the GIS equipment body, and a casing installed on the four-way pipe fitting, wherein the four-way pipe fitting is provided with an installation and fixing device for fixing the casing, wherein the installation and fixing device comprises a plurality of primary fixing mechanisms arranged at the top of the four-way pipe fitting for fastening the casing, and the interior of the four-way pipe fitting is provided with a driving mechanism for driving the primary fixing mechanism to operate. The present invention drives multiple primary fixing mechanisms to operate simultaneously through a driving mechanism, so that the primary fixing mechanism can press and fix multiple casings together, and can realize the overall fixation of multiple casings, greatly improving the installation efficiency of the casing, and the pressing tube surrounds the casing and presses it downward at the same time, and each position of the casing connection part is subjected to the same force, thereby avoiding the situation of loose installation due to uneven force.

Description

Technical Field

[0001] The invention relates to the technical field of electric GIS equipment, in particular to an electric GIS equipment capable of integrally fixing a bushing. Background Art

[0002] Power GIS equipment, also known as gas-insulated metal-enclosed switchgear, is a type of equipment used in high-voltage power transmission and distribution systems. It is mainly used to control, distribute and protect power systems. It effectively isolates the conductive parts of the equipment by placing the equipment in insulating gas, thereby improving the safety and reliability of the equipment. Power GIS equipment includes circuit breakers, disconnectors, earthing switches, cable heads, current transformers, voltage transformers, insulated busbars, bushings and control and protection equipment.

[0003] In power GIS equipment, the bushing is an important component. It is mainly used as an insulating protective shell to protect internal electrical equipment and components as well as insulating gas. It can effectively isolate internal working parts from the external environment, prevent electrical equipment from contacting the outside world, and ensure safe operation.

[0004] The casing of the existing power GIS equipment is generally fixed to the four-way pipe fitting by bolts. A four-way pipe fitting is usually equipped with multiple casings, which are connected to other power GIS equipment units through the four-way pipe fitting. The existing casing connection method has the following shortcomings: 1. Since multiple casings are installed on the four-way pipe fitting, workers need to install each casing separately, and each casing needs to be fixed with a large number of bolts, resulting in a long installation time and low installation efficiency; 2. When the casing is fixed with bolts, there will be gaps between each bolt, and the tightening force of each bolt is also different, which leads to uneven force at the connection between the casing and the four-way pipe fitting, affecting the firmness of the casing installation; 3. After the casing is fixed with bolts, the casing and the four-way fitting are respectively located on both sides of the GIS sealing ring, and the GIS sealing ring between the casing and the four-way fitting will be exposed to the air. Due to the different clamping forces of different bolts, the deformation of various parts of the GIS sealing ring will also be different, which is easy to cause aging of the GIS sealing ring, resulting in reduced sealing effect, resulting in leakage of SF6 gas inside the power GIS equipment, and reduced insulation effect of the power GIS equipment. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an electric GIS device capable of fixing a bushing as a whole, comprising a GIS device body, a four-way pipe fitting installed on the GIS device body, and a bushing installed on the four-way pipe fitting, wherein the four-way pipe fitting is provided with an installation and fixing device for fixing the bushing.

[0006] An interlayer plate is fixedly connected inside the four-way pipe fitting, a connecting pipe opening for docking with the sleeve is arranged on the top of the interlayer plate, and an operation window is arranged on the top of the four-way pipe fitting.

[0007] The installation and fixing device includes a plurality of primary fixing mechanisms arranged on the top of the four-way pipe fitting for fastening the sleeve, a driving mechanism for driving the primary fixing mechanism to operate is arranged inside the four-way pipe fitting, a limiting mechanism for limiting the unidirectional operation of the driving mechanism is installed on the inner wall of the four-way pipe fitting, and a secondary fixing mechanism is installed on the top of the operating window.

[0008] The primary fixing mechanism includes a mounting port fixedly installed on the top of the four-way pipe fitting, a compression tube for compressing the sleeve is sleeved inside the mounting port, a sealing ring is arranged on the inner side of the compression tube, a threaded sleeve is movably sleeved at the bottom of the mounting port, the threaded sleeve is threadedly connected to the compression tube, and the threaded sleeve is transmission-connected to the driving mechanism.

[0009] In one possible implementation, a guide block is fixedly connected to the inner wall of the installation port, a guide groove matching the guide block is opened on the outer wall of the compression tube, the guide block is slidably installed inside the guide groove, and a second sealing ring is also provided inside the installation port, and the second sealing ring is sleeved on the outside of the compression tube.

[0010] In a possible implementation, a clamping edge extending inward is provided at the top of the clamping tube, and the clamping edge is pressed against the top of the sealing ring 1, and the sealing ring 1 is pressed against the flange ring on the side of the sleeve.

[0011] In one possible implementation, the driving mechanism includes a rotating shaft movably mounted on the top of the partition plate, the outer portion of the rotating shaft is fixedly mounted with a driving gear, the top of the rotating shaft is movably mounted with a hexagonal rotating rod, the top of the hexagonal rotating rod is fixedly connected to a handwheel, the interior of the rotating shaft is provided with a compression spring located at the bottom of the hexagonal rotating rod, and a limiting groove is provided on the top of the driving gear.

[0012] In a possible implementation, a transmission gear is fixedly connected to the outside of the threaded sleeve, the threaded sleeve is distributed around the driving gear, and the transmission gear is meshed with the driving gear.

[0013] In one possible implementation, the limiting mechanism includes a fixed block fixed on the inner wall of the operating window, the internal movable sleeve of the fixed block is provided with a pull rod, the bottom of the pull rod is fixedly connected to the limiting block, the limiting block matches the limiting groove, the bottom of the fixed block is fixedly connected to a reset spring, and the end of the reset spring away from the fixed block is fixed on the pull rod.

[0014] In one possible implementation, the secondary fixing mechanism includes a sealing gasket placed on the top of the interlayer plate, a clamping piece placed on the top of the sealing gasket, a sealing end cover placed on the top of the clamping piece, and the sealing gasket, the clamping piece and the sealing end cover are detachably fixed to the interlayer plate by bolts.

[0015] In one possible implementation, the clamping piece is in the shape of a ring, and a plurality of side pressure plates are fixedly connected to the side of the clamping piece. The side pressure plates are movably sleeved on the outside of the sleeve, and the side pressure plates are located above the clamping tube. The cross-section of the sealing end cover is T-shaped, and the lower part of the sealing end cover is pressed against the top of the hand wheel.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention drives multiple primary fixing mechanisms to operate simultaneously through a driving mechanism, so that the primary fixing mechanisms can compress and fix multiple sleeves together at the same time, and can realize the overall fixation of multiple sleeves, which greatly improves the installation efficiency of the sleeves. Moreover, the compression tube surrounds the sleeve and compresses it downward at the same time. Each position of the sleeve connection part is subjected to the same force, which avoids the situation of loose installation due to uneven force. At the same time, the compression tube completely wraps the connection part between the sleeve and the connecting pipe mouth. The sealing ring is placed inside the compression tube, which can prevent the sealing ring inside the compression tube from contacting with the air, reduce the aging of the sealing ring, and improve the sealing effect.

[0017] 2. The present invention drives the primary fixing mechanism to operate through the driving mechanism, thereby realizing the installation and fixation of multiple sleeves by the primary fixing mechanism. After the driving mechanism is completed, it can be directly retracted into the interior of the four-way pipe fitting to avoid the driving mechanism being exposed to the outside world, which can prevent the driving mechanism from being corroded by the external environment and is beneficial to the sealing of the four-way pipe fitting.

[0018] 3. The present invention sets a limit mechanism, which can limit the driving mechanism and prevent the driving mechanism from rotating, thereby ensuring the firmness of the primary fixing mechanism. At the same time, when the hexagonal rotating rod is retracted into the interior of the four-way pipe fitting, the handwheel can be pressed against the top of the limit mechanism, and the driving mechanism and the limit mechanism can play a role of mutual locking, thereby further improving the firmness of the casing fixation.

[0019] 4. The present invention provides a secondary fixing mechanism, which can, on the one hand, close the operation window and completely seal the drive mechanism in the four-way pipe fitting; on the other hand, the clamping piece can also be clamped on the top of the clamping tube, thereby performing a secondary fixing function on the clamping tube and further improving the firmness of the sleeve installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2It is a three-dimensional structural schematic diagram of the sleeve of the present invention installed on the four-way pipe fitting.

[0022] Figure 3 It is a partial cross-sectional view of the four-way pipe fitting of the present invention.

[0023] Figure 4 It is a partial cross-sectional view of the cross-way pipe fitting when the sleeve of the present invention is installed.

[0024] Figure 5 It is a cross-sectional view of the driving mechanism of the present invention.

[0025] Figure 6 It is a cross-sectional view of the primary fixing mechanism of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the limiting mechanism of the present invention.

[0027] Figure 8 It is an exploded view of the secondary fixing mechanism of the present invention.

[0028] In the figure: 1. GIS equipment body; 2. Cross-type pipe fitting; 21. Interlayer plate; 211. Connecting pipe port; 22. Operation window; 3. Casing; 4. Mounting fixture; 41. Primary fixing mechanism; 411. Mounting port; 4111. Guide block; 412. Pressing pipe; 4121. Guide groove; 4122. Pressing edge; 413. Sealing ring 1; 414. Threaded sleeve; 4141. Transmission gear; 415. Sealing Circle two; 42, driving mechanism; 421, rotating shaft; 422, driving gear; 4221, limiting groove; 423, hexagonal rotating rod; 4231, handwheel; 424, compression spring; 43, limiting mechanism; 431, fixing block; 432, pulling rod; 433, limiting block; 434, reset spring; 44, secondary fixing mechanism; 441, sealing gasket; 442, pressing piece; 4421, side pressure plate; 443, sealing end cover. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 and Figure 2An electric GIS device capable of fixing a bushing as a whole comprises a GIS device body 1, a four-way pipe fitting 2 installed on the GIS device body 1 and a bushing 3 installed on the four-way pipe fitting 2, wherein the four-way pipe fitting 2 is provided with an installation and fixing device 4 for fixing the bushing 3.

[0031] See also Figure 2 and Figure 3 A partition plate 21 is fixedly connected to the interior of the four-way pipe fitting 2, and a connecting pipe port 211 is provided on the top of the partition plate 21 for docking with the sleeve 3. An operation window 22 is provided on the top of the four-way pipe fitting 2. The partition plate 21 divides the interior of the four-way pipe fitting 2 into two parts, an upper part and a lower part. The mounting and fixing device 4 is located above the partition plate 21, and the driving mechanism 42 and the limiting mechanism 43 can be operated through the operation window 22.

[0032] See also Figure 2 , Figure 3 and Figure 4 The installation and fixing device 4 includes a plurality of primary fixing mechanisms 41 arranged on the top of the four-way pipe fitting 2 for fastening the sleeve 3. A driving mechanism 42 for driving the primary fixing mechanism 41 is arranged inside the four-way pipe fitting 2. A limiting mechanism 43 for limiting the unidirectional operation of the driving mechanism 42 is installed on the inner wall of the four-way pipe fitting 2. A secondary fixing mechanism 44 is installed on the top of the operation window 22. The primary fixing mechanisms 41 are distributed around the driving mechanism 42. All the primary fixing mechanisms 41 are driven by the driving mechanism 42 at the center. The limiting mechanism 43 limits the rotation of the driving mechanism 42 so that the limiting mechanism 43 can only rotate in one direction, thereby ensuring the firmness of the primary fixing mechanism 41 to fix the sleeve 3.

[0033] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 The primary fixing mechanism 41 includes an installation port 411 fixedly installed on the top of the four-way pipe fitting 2, a compression tube 412 for compressing the sleeve 3 is sleeved inside the installation port 411, a sealing ring 413 is arranged on the inner side of the compression tube 412, a threaded sleeve 414 is movably sleeved at the bottom of the installation port 411, the threaded sleeve 414 is threadedly connected with the compression tube 412, the threaded sleeve 414 is transmission-connected with the driving mechanism 42, the compression tube 412 is driven downwardly driven by the rotation of the threaded sleeve 414, the compression tube 412 can press the sleeve 3 downwardly, thereby fixing the sleeve 3 on the four-way pipe fitting 2, the sealing ring 413 can seal the sleeve 3, and improve the firmness and sealing effect of the installation of the sleeve 3.

[0034] See also Figure 4 , Figure 5 and Figure 6A guide block 4111 is fixedly connected to the inner wall of the installation port 411, and a guide groove 4121 matching the guide block 4111 is opened on the outer wall of the compression tube 412. The guide block 4111 is slidably installed in the guide groove 4121. A sealing ring 415 is also provided inside the installation port 411. The sealing ring 415 is sleeved on the outside of the compression tube 412. The guide block 4111 limits the compression tube 412 to prevent the compression tube 412 from rotating with the threaded sleeve 414. The sealing ring 415 can seal the compression tube 412 to further improve the sealing effect.

[0035] See also Figure 4 and Figure 6 The top of the clamping tube 412 is provided with a clamping edge 4122 extending inward, and the clamping edge 4122 is pressed on the top of the sealing ring 413, and the sealing ring 413 is pressed on the flange ring on the side of the sleeve 3. The clamping edge 4122 can press downward from various parts of the top of the flange ring to ensure uniform force on the flange ring.

[0036] See also Figure 3 , Figure 4 and Figure 5 The driving mechanism 42 includes a rotating shaft 421 movably mounted on the top of the interlayer plate 21, a driving gear 422 is fixedly mounted on the outside of the rotating shaft 421, a hexagonal rotating rod 423 is movably mounted on the top of the rotating shaft 421, a hand wheel 4231 is fixedly connected to the top of the hexagonal rotating rod 423, a compression spring 424 is arranged at the bottom of the hexagonal rotating rod 423 inside the rotating shaft 421, a limiting groove 4221 is arranged on the top of the driving gear 422, and the hexagonal rotating rod 423 can only be moved at the position of the rotating shaft 421. The interior moves up and down, and the compression spring 424 is used to give the hexagonal rotating rod 423 an upward elastic force, so that the hexagonal rotating rod 423 can automatically move up to the highest point. At this time, the hand wheel 4231 can be moved to the outside of the operation window 22, and the hexagonal rotating rod 423 is driven to rotate by rotating the hand wheel 4231. The hexagonal rotating rod 423 drives the rotating shaft 421 and the driving gear 422 to rotate, which can drive the primary fixing mechanism 41 around it, so that the primary fixing mechanism 41 can fix the sleeve 3 as a whole at the same time.

[0037] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 The outside of the threaded sleeve 414 is fixedly connected with a transmission gear 4141, and the threaded sleeve 414 is distributed around the driving gear 422. The transmission gear 4141 is meshed with the driving gear 422. The driving gear 422 drives the transmission gear 4141 to rotate, which can make the threaded sleeve 414 rotate, so that the clamping tube 412 inside the threaded sleeve 414 moves downward, driving the clamping tube 412 to fix the sleeve 3.

[0038] See also Figure 3 , Figure 4 , Figure 5 and Figure 7 The limiting mechanism 43 includes a fixed block 431 fixed on the inner wall of the operation window 22, a pull rod 432 is movably mounted inside the fixed block 431, a limiting block 433 is fixedly connected to the bottom of the pull rod 432, the limiting block 433 matches the limiting groove 4221, a return spring 434 is fixedly connected to the bottom of the fixed block 431, and one end of the return spring 434 away from the fixed block 431 is fixed to the pull rod 432, the back of the limiting block 433 is a sloped surface and the limiting block 433 moves from top to bottom The limit block 433 gradually becomes narrower, and the return spring 434 is used to give the limit block 433 a downward elastic force, so that the limit block 433 can be clamped into the inside of the limit groove 4221. When the driving gear 422 rotates clockwise, the limit groove 4221 contacts the slope surface of the limit block 433, and the limit block 433 can move upward without hindering the rotation of the driving gear 422. However, when the driving gear 422 rotates counterclockwise, the limit block 433 will be clamped in the limit groove 4221 to prevent the driving gear 422 from rotating.

[0039] See also Figure 2 , Figure 3 , Figure 4 and Figure 8 The secondary fixing mechanism 44 includes a sealing gasket 441 placed on the top of the interlayer plate 21, a pressing piece 442 is placed on the top of the sealing gasket 441, and a sealing end cover 443 is placed on the top of the pressing piece 442. The sealing gasket 441, the pressing piece 442 and the sealing end cover 443 are detachably fixed to the interlayer plate 21 by bolts. The sealing gasket 441 seals the operation window 22, and the sealing end cover 443 closes the operation window 22.

[0040] See also Figure 2 , Figure 3 and Figure 8 The clamping piece 442 is annular, and a plurality of side pressure plates 4421 are fixedly connected to the side of the clamping piece 442. The side pressure plates 4421 are movably sleeved on the outside of the sleeve 3, and the side pressure plates 4421 are located above the clamping tube 412. The cross section of the sealing end cover 443 is T-shaped, and the lower part of the sealing end cover 443 is pressed against the top of the hand wheel 4231. The clamping piece 442 is pressed and fixed by the sealing end cover 443, so that the side pressure plates 4421 can be pressed against the outside of the clamping tube 412, thereby achieving the effect of secondary fixing the clamping tube 412. At the same time, the sealing end cover 443 can also press the hand wheel 4231 against the inside of the four-way pipe fitting 2, so that the hand wheel 4231 is pressed against the pull rod 432 to prevent the pull rod 432 from moving up and down.

[0041] When in use, the sleeve 3 is connected to the connecting pipe port 211, and then the compression tube 412 is moved downward to insert the compression tube 412 into the interior of the installation port 411. When inserting, the guide block 4111 needs to be aligned with the guide groove 4121 so that the guide block 4111 is slidably installed into the interior of the guide groove 4121. When the compression tube 412 contacts the threaded sleeve 414, the driving gear 422 is driven to rotate clockwise by turning the hand wheel 4231. The driving gear 422 drives the threaded sleeve 414 to rotate, and the compression tube 412 and the threaded sleeve 414 are threadedly connected together. Then, the hand wheel 4231 is continued to be turned to make the compression tube 412 press the sleeve 3 downward. During the rotation of the driving gear 422, the reset spring 43 Give the pull rod 432 a downward elastic force so that the limit block 433 is stuck in the limit groove 4221 to prevent the driving gear 422 from rotating. After the fixing is completed, the sealing gasket 441 is placed on the interlayer plate 21, the pressing piece 442 is placed on the sealing gasket 441, and finally the sealing end cover 443 is placed on the pressing piece 442. The sealing end cover 443, the pressing piece 442 and the sealing gasket 441 are fixed to the interlayer plate 21 with bolts. The sealing end cover 443 will press the hand wheel 4231 downward to the inside of the four-way pipe fitting 2. At this time, the hand wheel 4231 will press on the top of the pull rod 432 to prevent the pull rod 432 from moving up and down. At the same time, the side pressure plate 4421 presses on the top of the compression tube 412 to improve the firmness of the compression tube 412.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric GIS device capable of integrally fixing a bushing, comprising a GIS device body, a four-way pipe fitting installed on the GIS device body, and a bushing installed on the four-way pipe fitting, characterized in that: The four-way pipe fitting is provided with an installation and fixing device for fixing the casing, the interior of the four-way pipe fitting is fixedly connected with a partition plate, the top of the partition plate is provided with a connecting pipe opening for docking with the casing, and the top of the four-way pipe fitting is provided with an operation window; The installation and fixing device includes a plurality of primary fixing mechanisms arranged on the top of the cross-way pipe fitting for fastening the casing, a driving mechanism for driving the primary fixing mechanism to operate is arranged inside the cross-way pipe fitting, a limiting mechanism for limiting the unidirectional operation of the driving mechanism is installed on the inner wall of the cross-way pipe fitting, and a secondary fixing mechanism is installed on the top of the operation window; The primary fixing mechanism includes a mounting port fixedly mounted on the top of the cross-way pipe fitting, a compression tube for compressing the sleeve is sleeved inside the mounting port, a sealing ring is arranged inside the compression tube, a threaded sleeve is movably sleeved at the bottom of the mounting port, the threaded sleeve is threadedly connected with the compression tube, and the threaded sleeve is drivingly connected with the driving mechanism; A guide block is fixedly connected to the inner wall of the installation port, a guide groove matching the guide block is opened on the outer wall of the compression tube, the guide block is slidably installed inside the guide groove, and a second sealing ring is also provided inside the installation port, and the second sealing ring is sleeved on the outside of the compression tube; The top of the compression tube is provided with a compression edge extending inward, the compression edge is pressed against the top of the sealing ring 1, and the sealing ring 1 is pressed against the flange ring on the side of the sleeve; The driving mechanism includes a rotating shaft movably mounted on the top of the partition plate, a driving gear is fixedly mounted on the outside of the rotating shaft, a hexagonal rotating rod is movably mounted on the top of the rotating shaft, a handwheel is fixedly connected to the top of the hexagonal rotating rod, a compression spring is arranged at the bottom of the hexagonal rotating rod inside the rotating shaft, and a limiting groove is arranged on the top of the driving gear.

2. The electric GIS device capable of integrally fixing the casing according to claim 1, characterized in that: The outside of the threaded sleeve is fixedly connected with a transmission gear, the threaded sleeve is distributed around the driving gear, and the transmission gear is meshed with the driving gear.

3. The electric GIS device capable of integrally fixing the casing according to claim 1, characterized in that: The limiting mechanism includes a fixed block fixed on the inner wall of the operating window, a pull rod is movably sleeved inside the fixed block, the bottom of the pull rod is fixedly connected to the limiting block, the limiting block matches the limiting groove, the bottom of the fixed block is fixedly connected to a reset spring, and one end of the reset spring away from the fixed block is fixed on the pull rod.

4. The electric GIS device capable of integrally fixing the casing according to claim 1, characterized in that: The secondary fixing mechanism includes a sealing gasket placed on the top of the interlayer plate, a pressing piece is placed on the top of the sealing gasket, and a sealing end cover is placed on the top of the pressing piece. The sealing gasket, the pressing piece and the sealing end cover are detachably fixed to the interlayer plate by bolts.

5. The electric GIS device capable of integrally fixing the casing according to claim 4, characterized in that: The clamping piece is in a circular ring shape, and a plurality of side pressure plates are fixedly connected to the side of the clamping piece. The side pressure plates are movably sleeved on the outside of the sleeve, and the side pressure plates are located above the clamping tube. The cross-section of the sealing end cover is T-shaped, and the lower part of the sealing end cover is pressed against the top of the hand wheel.

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