Insulating sleeve device

Abstract

The utility model provides an insulating sleeve device, and belongs to the technical field of electric power insulation. The problem that an existing screw rod is inconvenient to assemble on a cabinet body is solved. The insulating sleeve device comprises a cabinet body, the cabinet body is provided with a top plate, an insulating sleeve comprises an outer sleeve body and an inner sleeve body, a mounting hole is formed in the top plate, a plurality of through holes are formed in the top plate and located on the periphery of the mounting hole, all the through holes are annularly distributed around the mounting hole, and a screw is arranged in each through hole in a penetrating mode. Two first locking nuts are connected to each screw in a screwed mode, one first locking nut is located on the upper side of the top plate and tightly attached to the top plate, and the other first locking nut is located on the lower side of the top plate and tightly attached to the top plate. The screw rod of the structure cannot move up and down, is in a straight state, does not incline, and is simple and convenient to assemble on the cabinet body.

Description

Technical Field

[0001] This utility model belongs to the field of power insulation technology, and in particular to an insulating sleeve device. Background Technology

[0002] With the development of the power industry, in order to achieve miniaturization and high reliability of switchgear, gas-insulated switchgear has become the trend in the development of medium and high voltage switchgear. The insulating bushing with a sealed structure is a key component for the primary electrical connection between the inside and outside of the gas-insulated switchgear. One end of the bushing is placed inside the switchgear and the other end is placed outside the gas box. In existing gas-insulated switchgear, the insulating bushing is bolted to the connecting copper busbar inside the gas box.

[0003] Currently, the China Patent Network discloses an insulating sleeve and an air-filled cabinet using the insulating sleeve [Application No.: 2017104864497]. It includes an outer connecting body for being installed outside the cabinet and an inner connecting body for being installed inside the cabinet. The outer connecting body has a conductive rod embedded in it, and the inner connecting body has a plug-in section for being plugged into and connected to the conductive rod. The plug-in section includes an annular structure composed of two or more contact pieces. The insulating sleeve also includes a fixing structure, which includes an outer connecting hole provided on the outer connecting body and an inner connecting hole provided on the inner connecting body. The inner connecting hole and the outer connecting hole are radially staggered on the side wall of the cabinet.

[0004] The installation of the above-mentioned insulating sleeve and cabinet has the following defects: welding studs need to be installed on the inner and outer surfaces of the cabinet, and the welding studs are welded to the cabinet. First of all, it is difficult to ensure that the welding studs are in a straight state after welding. After welding, the studs are prone to tilting, which is not conducive to the accurate assembly of the insulating sleeve later. Moreover, welding studs on the inner surface of the cabinet is more complicated, resulting in inconvenience in connecting the welding studs to the cabinet. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an insulating sleeve device. The technical problem to be solved by this utility model is: how to solve the problem of inconvenient assembly of the screw on the cabinet.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An insulating sleeve device includes a cabinet with a top plate. The insulating sleeve includes an outer sleeve and an inner sleeve. The top plate has a mounting hole, and several through holes are arranged in a ring around the mounting hole. A screw is threaded through each through hole, and two locking nuts are screwed onto each screw. One locking nut is located on the upper side of the top plate and is in close contact with it, while the other locking nut is located on the lower side of the top plate and is also in close contact with it. The lower end of the outer sleeve is inserted into the mounting hole. The outer sleeve has an annular outer sealing gasket. The lower surface of the outer sealing gasket... The outer sealing gasket has several connecting holes one near its outer edge, each corresponding to a screw rod. The upper end of each screw rod passes through a connecting hole one, and a locking nut two, which is pressed against the outer sealing gasket, is screwed onto the upper end of the screw rod. The inner sleeve has an annular inner sealing gasket, the upper surface of which is fitted against the lower surface of the top plate. The inner sealing gasket has several connecting holes two near its outer edge, each corresponding to a screw rod. The lower end of each screw rod passes through a connecting hole two, and a locking nut three, which is screwed onto the inner sealing gasket, is screwed onto the lower end of the screw rod.

[0008] This structure features a through hole in the top plate. After the screw rod passes through the through hole, two locking nuts are screwed onto the screw rod. The two locking nuts are respectively pressed against the upper and lower surfaces of the top plate, positioning the screw rod vertically and preventing it from moving up and down. The screw rod remains straight and does not tilt, making assembly of the screw rod on the cabinet simple. After tightening the second locking nut, the outer sealing washer is pressed against the upper surface of the top plate, ensuring a good seal between the outer sealing washer and the top plate. After tightening the third locking nut, the inner sealing washer is pressed against the lower surface of the top plate, ensuring a good seal between the inner sealing washer and the top plate.

[0009] In the aforementioned insulating sleeve device, the lower surface of the outer sealing gasket has an annular relief groove. The locking nut is located within the relief groove. The relief groove has an inner circumferential surface, and an installation space is formed between the inner circumferential surface and the locking nut. A sealing ring is embedded in the installation space, and the sealing ring is in close contact with the inner circumferential surface, the upper surface of the top plate, and the inner top surface of the relief groove. The installation space facilitates the placement of the sealing ring within this area. The sealing ring's close contact with the inner circumferential surface, the upper surface of the top plate, and the inner top surface of the relief groove creates three seals, further improving the sealing effect.

[0010] In the aforementioned insulating sleeve device, the upper surface of the inner sealing gasket is provided with an annular relief groove II. The locking nut I is located within the relief groove II. The relief groove II has an inner circumferential surface II, and an installation space II is formed between the inner circumferential surface II and the locking nut I. A sealing ring II is embedded in the installation space II, and the sealing ring II is in close contact with the inner circumferential surface II, the lower surface of the top plate, and the inner bottom surface of the relief groove II. The installation space II facilitates the placement of the sealing ring II within this area. The sealing ring II is in close contact with the inner circumferential surface II, the lower surface of the top plate, and the inner bottom surface of the relief groove II, thereby forming a three-point seal and further improving the sealing effect.

[0011] In the aforementioned insulating sleeve device, a conductive rod is disposed within the outer sleeve. The lower part of the outer sleeve has a receiving cavity, and the lower end of the conductive rod is located within this cavity. An assembly groove is formed along the axial direction of the lower end face of the conductive rod. A second conductive rod is disposed within the inner sleeve. The upper end of the second conductive rod extends into the receiving cavity and is inserted into the assembly groove. A groove is formed along the axial direction of the upper end face of the second conductive rod, and a spring is disposed within this groove. A portion of the spring extends into the assembly groove and abuts against the top surface of the groove. When the second conductive rod and the first conductive rod are inserted into each other, the spring is in a compressed state. One end of the spring abuts against the inner bottom surface of the groove, and the other end abuts against the inner top surface of the assembly groove, ensuring a stable electrical connection between the first and second conductive rods and preventing open circuits.

[0012] In the aforementioned insulating sleeve device, the lower end of the outer sleeve body has a plug-in portion, which is inserted into the mounting hole and connected to the inner sleeve body.

[0013] Compared with the prior art, the insulating sleeve device of this utility model has the following advantages: This structure has a through hole in the top plate. After the screw rod passes through the through hole, two locking nuts are screwed onto the screw rod. The two locking nuts are respectively pressed against the upper and lower surfaces of the top plate, so that the screw rod is positioned vertically and vertically, preventing it from moving up and down and keeping it straight without tilting. The assembly of the screw rod on the cabinet is simple. After tightening the second locking nut, the outer sealing washer is pressed against the upper surface of the top plate, ensuring a good sealing effect between the outer sealing washer and the top plate. After tightening the third locking nut, the inner sealing washer is pressed against the lower surface of the top plate, ensuring a good sealing effect between the inner sealing washer and the top plate. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0015] In the diagram: 1. Cabinet body; 2. Top plate; 20. Mounting hole; 21. Through hole; 3. Outer sleeve body; 30. Outer sealing gasket; 31. Connection hole one; 32. Relief groove one; 33. Inner circumferential surface one; 34. Installation space one; 35. Insertion part; 4. Inner sleeve body; 40. Inner sealing gasket; 41. Connection hole two; 42. Relief groove two; 43. Inner circumferential surface two; 44. Installation space two; 5. Screw; 6. Locking nut one; 7. Locking nut two; 8. Locking nut three; 9. Sealing ring one; 10. Sealing ring two; 11. Conductive rod one; 110. Assembly groove; 12. Receiving cavity; 13. Conductive rod two; 130. Groove; 14. Spring. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1As shown, this insulating sleeve device includes a cabinet 1 with a top plate 2. The insulating sleeve includes an outer sleeve 3 and an inner sleeve 4. The top plate 2 has mounting holes 20, and several through holes 21 are formed around the mounting holes 20. All through holes 21 are arranged in a ring around the mounting holes 20. A screw 5 is inserted into each through hole 21, and two locking nuts 6 are screwed onto each screw 5. One locking nut 6 is located on the upper side of the top plate 2 and is in close contact with it, while the other locking nut 6 is located on the lower side of the top plate 2 and is in close contact with it. The lower end of the outer sleeve 3 is inserted into the mounting hole 20. The outer sleeve 3 has an annular outer sealing washer 30. The lower surface of the outer sealing washer 30... The upper surface of the inner sleeve 4 is attached to the upper surface of the top plate 2. The outer sealing gasket 30 has several connecting holes 31 near its outer edge. Each connecting hole 31 corresponds to a screw 5. The upper end of each screw 5 passes through a connecting hole 31. A locking nut 7 is screwed onto the upper end of the screw 5 and pressed against the outer sealing gasket 30. The inner sleeve 4 has an annular inner sealing gasket 40. The upper surface of the inner sealing gasket 40 is attached to the lower surface of the top plate 2. The inner sealing gasket 40 has several connecting holes 41 near its outer edge. Each connecting hole 41 corresponds to a screw 5. The lower end of each screw 5 passes through a connecting hole 41 and is screwed onto the lower end of the screw 5 and pressed against the inner sealing gasket 40 and pressed against the inner sealing gasket 40. This structure has a through hole 21 on the top plate 2. After the screw 5 passes through the through hole 21, two locking nuts 6 are screwed onto the screw 5. The two locking nuts 6 are pressed against the upper and lower surfaces of the top plate 2 respectively, so that the screw 5 is positioned vertically and vertically. The screw 5 will not move up and down and will be in a straight position without tilting. The assembly of the screw 5 on the cabinet 1 is simple. After the locking nut 7 is tightened, the outer sealing washer 30 is pressed against the upper surface of the top plate 2 to ensure a good sealing effect between the outer sealing washer 30 and the top plate 2. After the locking nut 8 is tightened, the inner sealing washer 40 is pressed against the lower surface of the top plate 2 to ensure a good sealing effect between the inner sealing washer 40 and the top plate 2.

[0018] like Figure 1As shown, the lower surface of the outer sealing gasket 30 has an annular relief groove 32. The locking nut 6 is located within the relief groove 32. The relief groove 32 has an inner circumferential surface 33, and an installation space 34 is formed between the inner circumferential surface 33 and the locking nut 6. A sealing ring 9 is embedded in the installation space 34. The sealing ring 9 is in close contact with the inner circumferential surface 33, the upper surface of the top plate 2, and the inner top surface of the relief groove 32. The installation space 34 facilitates the placement of the sealing ring 9 within this area. The sealing ring 9 is in close contact with the inner circumferential surface 33, the upper surface of the top plate 2, and the inner top surface of the relief groove 32, thereby forming three seals and further improving the sealing effect. The upper surface of the inner sealing gasket 40 has an annular relief groove 42. The locking nut 6 is located within the relief groove 42. The relief groove 42 has an inner circumferential surface 43, and an installation space 44 is formed between the inner circumferential surface 43 and the locking nut 6. A sealing ring 10 is embedded in the installation space 44. The sealing ring 10 is in close contact with the inner circumferential surface 43, the lower surface of the top plate 2, and the inner bottom surface of the relief groove 42. The installation space 44 facilitates the placement of the sealing ring 10 within this area. The sealing ring 10 is in close contact with the inner circumferential surface 43, the lower surface of the top plate 2, and the inner bottom surface of the relief groove 42, thus forming a three-point seal and further improving the sealing effect.

[0019] like Figure 1 As shown, a conductive rod 11 is provided inside the outer sleeve body 3. The lower part of the outer sleeve body 3 has a receiving cavity 12. The lower end of the conductive rod 11 is located in the receiving cavity 12. An assembly groove 110 is formed on the lower end surface of the conductive rod 11 along the axial direction of the conductive rod 11. A conductive rod 23 is provided inside the inner sleeve body 4. The upper end of the conductive rod 23 extends into the receiving cavity 12 and is inserted into the assembly groove 110. A groove 130 is formed on the upper end surface of the conductive rod 23 along the axial direction of the conductive rod 23. A spring 14 is provided in the groove 130. A part of the spring 14 extends into the assembly groove 110 and abuts against the top surface of the assembly groove 110. When conductive rod 13 and conductive rod 11 are inserted into each other, spring 14 is compressed. One end of spring 14 abuts against the inner bottom surface of groove 130, and the other end of spring 14 abuts against the inner top surface of assembly groove 110, ensuring a stable electrical connection between conductive rod 11 and conductive rod 13 and preventing circuit breakage. The lower end of outer sleeve 3 has a plug-in part 35, which is inserted into mounting hole 20 and connected to inner sleeve 4.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An insulating bushing arrangement comprising a cabinet (1) having a roof (2), the insulating bushing comprising an outer bushing body (3) and an inner bushing body (4), characterized in that, The top plate (2) is provided with a mounting hole (20), a plurality of through holes (21) are arranged around the mounting hole (20) on the periphery of the top plate (2), a screw rod (5) is arranged in each through hole (21), two lock nuts (6) are screwed on each screw rod (5), one of the lock nuts (6) is located on the upper side of the top plate (2) and is tightly attached to the top plate (2), and the other lock nut (6) is located on the lower side of the top plate (2) and is tightly attached to the top plate (2); the lower end of the outer sleeve body (3) is inserted into the mounting hole (20), the outer sleeve body (3) has an annular outer sealing gasket (30), the lower surface of the outer sealing gasket (30) is attached to the upper surface of the top plate (2), a plurality of connection holes (31) are arranged on the outer sealing gasket (30) near the outer edge, the connection holes (31) correspond to the screw rods (5) one by one, the upper end of each screw rod (5) passes through the connection hole (31) and is arranged, and the upper end of the screw rod (5) is screwed with a lock nut (7) which is tightly pressed on the outer sealing gasket (30); the inner sleeve body (4) has an annular inner sealing gasket (40), the upper surface of the inner sealing gasket (40) is attached to the lower surface of the top plate (2), a plurality of connection holes (41) are arranged on the inner sealing gasket (40) near the outer edge, the connection holes (41) correspond to the screw rods (5) one by one, the lower end of each screw rod (5) passes through the connection hole (41) and is arranged, and the lower end of the screw rod (5) is screwed with a lock nut (8) which is tightly pressed on the inner sealing gasket (40).

2. An insulating sleeve device according to claim 1, wherein, The lower surface of the outer sealing gasket (30) is provided with an annular accommodation groove (32), the lock nut (6) is located in the accommodation groove (32), the accommodation groove (32) has an inner circumferential surface (33), an installation space (34) is formed between the inner circumferential surface (33) and the lock nut (6), and a sealing ring (9) is embedded in the installation space (34), and the sealing ring (9) is tightly attached to the inner circumferential surface (33), the upper surface of the top plate (2) and the inner top surface of the accommodation groove (32).

3. An insulating sleeve device according to claim 1, wherein, The upper surface of the inner sealing gasket (40) is provided with an annular accommodation groove (42), the lock nut (6) is located in the accommodation groove (42), the accommodation groove (42) has an inner circumferential surface (43), an installation space (44) is formed between the inner circumferential surface (43) and the lock nut (6), and a sealing ring (10) is embedded in the installation space (44), and the sealing ring (10) is tightly attached to the inner circumferential surface (43), the lower surface of the top plate (2) and the inner bottom surface of the accommodation groove (42).

4. An insulating sleeve device according to claim 1, wherein, The outer sleeve body (3) is provided with a conductive rod (11), the lower part of the outer sleeve body (3) has a containing cavity (12), the lower end of the conductive rod (11) is located in the containing cavity (12), the lower end surface of the conductive rod (11) is provided with an assembly groove (110) along the axial direction of the conductive rod (11), the inner sleeve body (4) is provided with a conductive rod (13), the upper end of the conductive rod (13) extends into the containing cavity (12) and is inserted into the assembly groove (110), the upper end surface of the conductive rod (13) is provided with a groove (130) along the axial direction of the conductive rod (13), the groove (130) is provided with a spring (14), and the spring (14) extends into the assembly groove (110) and abuts against the top surface of the assembly groove (110).

5. An insulating sleeve device according to claim 1, wherein, The lower end of the outer sleeve body (3) is provided with an insertion part (35), the insertion part (35) is inserted into the mounting hole (20), and the insertion part (35) is connected with the inner sleeve body (4) in an insertion mode.

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