GIS terminal for power transmission and transformation line

Abstract

The utility model discloses a GIS terminal used for a power transmission and transformation line, comprising a tail pipe, the top end of the tail pipe is connected with an epoxy sleeve through a first screw, the first screw passes through a flange plate, the tail pipe is sleeved on the outer wall of a cone support, the epoxy sleeve is sleeved on the outer wall of an insulation cone, the tail pipe is sleeved on a cable, the top end of the cable is provided with a wire core, and the wire core is provided with a wire rod. The wire core is fixed in the epoxy sleeve through a fixing structure; the utility model has the beneficial effects that: the tight connection among the equipment is realized, so that the stable connection among the equipment is ensured, the internal sealing property is also ensured, the dry-type structure is adopted, no insulating pouring agent is needed, the phenomena of oil leakage and the like in the operation process are avoided, and the dry-type structure is not limited by the altitude and is not influenced by the external environment; according to the utility model, the cable can be disassembled and installed in the connector, the installation sealing performance is ensured, the structure is compact, the sealing performance is good, the field installation is convenient, the maintenance is avoided, and the connector can be plugged and unplugged.

Description

Technical Field

[0001] The utility model relates to the technical field of GIS terminals, in particular to a GIS terminal used for power transmission and transformation lines. Background Art

[0002] The transmission of electric current often leads to losses due to heating of the lines, so during transmission, the voltage is increased through substations to reduce the current and reduce heat loss. High voltage electricity is very dangerous, and the target electrical appliances do not need such high voltage, so the voltage needs to be reduced through substations. Since multiple substations are required during the process of current transmission, the transmission of current is called transmission and transformation.

[0003] The Chinese patent number CN217935037U discloses a plug-in GIS terminal, including a GIS terminal body, a rotation limit mechanism, and a clamping mechanism. When a cable with a rotation limit mechanism is inserted into the GIS terminal, the clamping part arranged on the rotation limit mechanism will continue to enter the clamping mechanism through the axial movement groove when it moves to the vicinity of the clamping mechanism. When the clamping part moves to the preset position of the horizontal movement groove, the clamping mechanism rotates horizontally, and the clamping part moves relatively in the horizontal movement groove accordingly, so that the clamping part is separated from the track where the axial movement groove is located, so that the clamping part cannot further generate axial displacement.

[0004] However, in the prior art, the sealing and insulation properties of GIS terminals are not good, and insulating casting agents are often required to be added, which leads to problems such as oil leakage during use, resulting in the need for frequent maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide a GIS terminal for power transmission and transformation lines to solve the above-mentioned background problems.

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

[0007] A GIS terminal for power transmission and transformation lines comprises a tail pipe: the top end of the tail pipe is connected with an epoxy sleeve via a first screw, and the first screw passes through a flange, the tail pipe is sleeved on the outer wall of a cone support, the epoxy sleeve is sleeved on the outer wall of an insulating cone, the tail pipe is sleeved on a cable, a wire core is provided at the top end of the cable, and the wire core is fixed inside the epoxy sleeve via a fixing structure.

[0008] As a further solution of the utility model: the outer radius of the top end of the tail tube is larger than the outer radius of the bottom end of the tail tube, an annular groove is opened inside the top end of the tail tube, a sealing gasket is sleeved inside the top end of the tail tube, the top surface of the sealing gasket abuts against the bottom surface of the flange, a retaining spring is provided at the top end of the tail tube, and a heat shrink tube is sleeved on the outer wall of the bottom end of the tail tube, and the bottom end of the heat shrink tube is sleeved on the outer wall of the cable.

[0009] As a further solution of the utility model: a spring washer and a flat washer are respectively provided between the first screw and the tail pipe, and the spring washer and the flat washer are sleeved on the first screw.

[0010] As a further solution of the utility model: a pressing groove is opened inside the epoxy sleeve, the top of the insulating cone abuts against the inside of the epoxy sleeve through the pressing groove, a sealing ring abuts against the bottom of the epoxy sleeve, and the bottom surface of the sealing ring abuts against the top surface of the flange.

[0011] As a further solution of the utility model: the top surface of the cone support abuts on the insulating cone, and the bottom end of the insulating cone is sleeved inside the top end of the cone support, the cone support is provided with a protruding ring, the bottom end of the protruding ring abuts against the top end of the spring, the bottom end of the spring abuts in the annular groove, and the spring is a compression spring.

[0012] As a further solution of the utility model: the cable passes through the tail pipe, the cone support and the interior of the insulating cone in sequence, and the top surface of the cable abuts against the bottom surface of the stop sleeve.

[0013] As a further solution of the utility model: the fixing structure includes: the outer wall of the wire core is provided with a core inner sleeve, the outer wall of the core inner sleeve is provided with a conductive column, the outer wall of the conductive column is provided with a contact seat, the contact seat is clamped on the inner wall of the epoxy sleeve, the bottom of the contact seat is abutted with a stop sleeve, and the bottom surface of the stop sleeve abuts on the top surface of the insulating cone.

[0014] As a further solution of the utility model: the conductive column is provided with multiple conductive sheets, the top of the contact seat is provided with a second screw, the contact seat protrudes from the top surface of the epoxy sleeve, the top of the stop sleeve is provided with a protruding block, and the top surface of the protruding block abuts against the bottom surface of the core inner sleeve.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model realizes a tight connection between the devices by abutting the tail pipe, the spring, the cone support, the insulating cone and the epoxy sleeve, connecting the tail pipe, the flange and the epoxy sleeve by the first screw, and the sealing gasket and the sealing ring are respectively distributed on the flange, thereby ensuring a stable connection between the devices and ensuring the internal sealing;

[0017] (2) The utility model is a dry structure, which does not require any insulating casting agent, thus eliminating the oil leakage during operation, and is not restricted by altitude or affected by the external environment;

[0018] (3) The utility model fixes the wire core on the epoxy sleeve, and then disassembles and connects the tail tube to the epoxy sleeve, and seals the connection between the tail tube and the cable by a heat shrink tube, thereby realizing the cable disassembly and installation inside the utility model, and ensuring the sealing of the installation. The utility model has a compact structure, good sealing, convenient on-site installation, maintenance-free, and pluggable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the A connection structure in the utility model;

[0023] Figure 4 It is a schematic diagram of the B connection structure in the utility model.

[0024] In the figure: 1. heat shrink tube; 2. tail tube; 3. flange; 4. spring; 5. cone support; 6. retaining ring; 7. sealing gasket; 8. sealing ring; 9. first screw; 10. spring washer; 11. flat washer; 12. insulating cone; 13. stop sleeve; 14. conductive column; 15. conductive sheet; 16. core inner sleeve; 17. epoxy sleeve; 18. second screw; 19. contact seat; 20. cable; 21. wire core. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figure 1 , 2 As shown in , 4, the utility model is a GIS terminal for power transmission and transformation lines, including a tail pipe 2: the top of the tail pipe 2 is connected to an epoxy sleeve 17 through a first screw 9, and the first screw 9 passes through a flange 3, the tail pipe 2 is sleeved on the outer wall of the cone support 5, and the epoxy sleeve 17 is sleeved on the outer wall of the insulating cone 12;

[0028] Specifically, the outer radius of the top end of the tail pipe 2 is greater than the outer radius of the bottom end of the tail pipe 2, an annular groove is provided inside the top end of the tail pipe 2, a sealing gasket 7 is sleeved inside the top end of the tail pipe 2, the top surface of the sealing gasket 7 abuts against the bottom surface of the flange 3, thereby ensuring the seal between the tail pipe 2 and the flange 3, and a retaining spring 6 is provided at the top end of the tail pipe 2, thereby preventing the axial movement of the tail pipe 2;

[0029] A spring washer 10 and a flat washer 11 are respectively provided between the first screw 9 and the tail pipe 2. The spring washer 10 and the flat washer 11 are sleeved on the first screw 9 to prevent the first screw 9 from automatically loosening.

[0030] The epoxy sleeve 17 is provided with a pressing groove inside, and the top end of the insulating cone 12 is abutted against the inside of the epoxy sleeve 17 through the pressing groove. The bottom end of the epoxy sleeve 17 is abutted against a sealing ring 8 inside, and the bottom surface of the sealing ring 8 is abutted against the top surface of the flange 3, thereby ensuring the sealing between the epoxy sleeve 17 and the flange 3;

[0031] The top surface of the cone holder 5 abuts against the insulating cone 12, and the bottom end of the insulating cone 12 is sleeved inside the top end of the cone holder 5. The cone holder 5 is provided with a protruding ring, and the bottom end of the protruding ring abuts against the top end of the spring 4. The bottom end of the spring 4 abuts against the annular groove. The spring 4 is a compression spring.

[0032] Preferably, four first screws 9 are provided, and the four first screws 9 are evenly distributed on the top of the tail pipe 2, so as to ensure a stable connection between the tail pipe 2, the flange 3 and the epoxy sleeve 17;

[0033] The use process of the embodiment of the utility model is as follows: the tail pipe 2 abuts against the spring 4, the spring 4 abuts against the cone support 5, the cone support 5 abuts against the insulating cone 12, the insulating cone 12 abuts against the epoxy sleeve 17, and then the tail pipe 2, the flange 3 and the epoxy sleeve 17 are connected by the first screw 9, and a sealing gasket 7 and a sealing ring 8 are provided between the tail pipe 2, the flange 3 and the epoxy sleeve 17; this process realizes the close connection between the various devices through the mutual abutment between the tail pipe 2, the spring 4, the cone support 5, the insulating cone 12 and the epoxy sleeve 17, and then the tail pipe 2, the flange 3 and the epoxy sleeve 17 are connected by the first screw 9, and the sealing gasket 7 and the sealing ring 8 are respectively distributed on the flange 3, thereby ensuring the stable connection between the various devices and also ensuring the internal sealing.

[0034] Embodiment 2

[0035] Based on Example 1, please refer to Figure 1 - Figure 3 As shown, in order to achieve the fixing of the cable, the utility model is a GIS terminal for a power transmission and transformation line, and also includes: a tail pipe 2 is sleeved on the cable 20, a core 21 is provided at the top of the cable 20, and the core 21 is fixed inside the epoxy sleeve 17 through a fixing structure;

[0036] The fixing structure includes: the outer wall of the wire core 21 is sheathed with a core inner sleeve 16, the outer wall of the core inner sleeve 16 is sheathed with a conductive column 14, the outer wall of the conductive column 14 is sheathed with a contact seat 19, the contact seat 19 is clamped on the inner wall of the epoxy sleeve 17, the bottom of the contact seat 19 abuts against a stop sleeve 13, and the bottom surface of the stop sleeve 13 abuts against the top surface of the insulating cone 12;

[0037] Specifically, the outer wall of the bottom end of the tail tube 2 is sleeved with a heat shrink tube 1, and the bottom end of the heat shrink tube 1 is sleeved on the outer wall of the cable 20;

[0038] The cable 20 passes through the tail pipe 2, the cone support 5 and the insulating cone 12 in sequence, and the top surface of the cable 20 abuts against the bottom surface of the stop sleeve 13;

[0039] A plurality of conductive sheets 15 are disposed on the conductive pillar 14;

[0040] A second screw 18 is provided on the top of the contact seat 19, and the contact seat 19 protrudes from the top surface of the epoxy sleeve 17;

[0041] The top of the stop sleeve 13 is provided with a protruding block, and the top surface of the protruding block abuts against the bottom surface of the core inner sleeve 16;

[0042] The use process of the embodiment of the utility model is as follows: first, the heat shrink tube 1, the tail tube 2, the cone support 5, the flange 3 and the insulating cone 12 are sequentially sleeved on the outer wall of the cable 20, and then the core sleeve 16 is sleeved on the outer wall of the core 21, the conductive column 14 is sleeved on the outer wall of the core sleeve 16, the contact seat 19 is sleeved on the outer wall of the conductive column 14, and then the contact seat 19 is clamped on the inner wall of the epoxy sleeve 17, the stop sleeve 13 is abutted against the bottom of the contact seat 19, and the insulating cone 12 is abutted against the bottom of the stop sleeve 13, thereby completing the fixation between the core 21 and the epoxy sleeve 17, and then The tail tube 2 and the epoxy sleeve 17 are fixed by the first screw 9, and the heat shrink tube 1 is fixed at the connection between the tail tube 2 and the cable 20, so as to complete the installation between the cable 20 and the utility model; this process is achieved by fixing the wire core 21 on the epoxy sleeve 17, and then disassembling the connection between the tail tube 2 and the epoxy sleeve 17, and sealing the connection between the tail tube 2 and the cable 20 by the heat shrink tube 1, so that the cable 20 can be disassembled and installed inside the utility model, and the sealing of the installation is guaranteed, the structure is compact, the sealing is good, the on-site installation is convenient, maintenance-free, and pluggable.

[0043] The working principle of the utility model is as follows: the tail tube 2 is abutted against the spring 4, the spring 4 is abutted against the cone support 5, the cone support 5 is abutted against the insulating cone 12, the insulating cone 12 is abutted against the epoxy sleeve 17, and then the tail tube 2, the flange 3 and the epoxy sleeve 17 are connected by the first screw 9, and a sealing gasket 7 and a sealing ring 8 are provided between the tail tube 2, the flange 3 and the epoxy sleeve 17; this process realizes the close connection between the various devices through the mutual abutment between the tail tube 2, the spring 4, the cone support 5, the insulating cone 12 and the epoxy sleeve 17, and then the tail tube 2, the flange 3 and the epoxy sleeve 17 are connected by the first screw 9, and the sealing gasket 7 and the sealing ring 8 are respectively distributed on the flange 3, thereby ensuring the stable connection between the various devices and ensuring the internal sealing, by firstly sleeve the heat shrink tube 1, the tail tube 2, the cone support 5, the flange 3 and the insulating cone 12 on the outer wall of the cable 20 in sequence, and then sleeve the core inner sleeve 16 on the outer wall of the wire core 21 , the conductive column 14 is sleeved on the outer wall of the core inner sleeve 16, the contact seat 19 is sleeved on the outer wall of the conductive column 14, and then the contact seat 19 is clamped on the inner wall of the epoxy sleeve 17, the stop sleeve 13 is abutted against the bottom of the contact seat 19, and the insulating cone 12 is abutted against the bottom of the stop sleeve 13, thereby completing the fixation between the wire core 21 and the epoxy sleeve 17, and then the tail tube 2 and the epoxy sleeve 17 are fixed by the first screw 9, and the heat shrink tube 1 is fixed at the connection between the tail tube 2 and the cable 20, thereby completing the installation between the cable 20 and the utility model; this process is achieved by fixing the wire core 21 on the epoxy sleeve 17, and then disassembling the connection between the tail tube 2 and the epoxy sleeve 17, and sealing the connection between the tail tube 2 and the cable 20 by the heat shrink tube 1, so as to realize the disassembly and installation of the cable 20 inside the utility model, and ensure the sealing of the installation, compact structure, good sealing, convenient on-site installation, maintenance-free, and pluggable.

[0044] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A GIS terminal for power transmission and transformation lines, characterized in that: The invention comprises a tail pipe (2), wherein the top end of the tail pipe (2) is connected to an epoxy sleeve (17) via a first screw (9), and the first screw (9) passes through a flange (3), the tail pipe (2) is sleeved on the outer wall of a cone support (5), the epoxy sleeve (17) is sleeved on the outer wall of an insulating cone (12), the tail pipe (2) is sleeved on a cable (20), and a wire core (21) is provided at the top end of the cable (20), and the wire core (21) is fixed inside the epoxy sleeve (17) via a fixing structure.

2. A GIS terminal for power transmission and transformation lines according to claim 1, characterized in that: The outer radius of the top end of the tail tube (2) is greater than the outer radius of the bottom end of the tail tube (2); an annular groove is provided inside the top end of the tail tube (2); a sealing gasket (7) is sleeved inside the top end of the tail tube (2); the top surface of the sealing gasket (7) abuts against the bottom surface of the flange (3); a retaining spring (6) is provided at the top end of the tail tube (2); a heat shrink tube (1) is sleeved on the outer wall of the bottom end of the tail tube (2); and the bottom end of the heat shrink tube (1) is sleeved on the outer wall of the cable (20).

3. A GIS terminal for power transmission and transformation lines according to claim 1, characterized in that: A spring washer (10) and a flat washer (11) are respectively arranged between the first screw (9) and the tail pipe (2), and the spring washer (10) and the flat washer (11) are sleeved on the first screw (9).

4. A GIS terminal for power transmission and transformation lines according to claim 1, characterized in that: The epoxy sleeve (17) is provided with a pressing groove inside, and the top end of the insulating cone (12) is abutted against the inside of the epoxy sleeve (17) through the pressing groove. The bottom end of the epoxy sleeve (17) is abutted against a sealing ring (8), and the bottom surface of the sealing ring (8) is abutted against the top surface of the flange (3).

5. A GIS terminal for power transmission and transformation lines according to claim 1, characterized in that: The top surface of the cone support (5) abuts against the insulating cone (12), and the bottom end of the insulating cone (12) is sleeved inside the top end of the cone support (5). The cone support (5) is provided with a protruding ring, the bottom end of the protruding ring abuts against the top end of the spring (4), and the bottom end of the spring (4) abuts against the annular groove. The spring (4) is a compression spring.

6. A GIS terminal for power transmission and transformation lines according to claim 1, characterized in that: The cable (20) passes through the tail pipe (2), the cone support (5) and the insulating cone (12) in sequence, and the top surface of the cable (20) abuts against the bottom surface of the stop sleeve (13).

7. A GIS terminal for power transmission and transformation lines according to claim 1, characterized in that: The fixing structure comprises: the outer wall of the wire core (21) is sheathed with a core inner sleeve (16), the outer wall of the core inner sleeve (16) is sheathed with a conductive column (14), the outer wall of the conductive column (14) is sheathed with a contact seat (19), the contact seat (19) is clamped on the inner wall of the epoxy sleeve (17), the bottom of the contact seat (19) is abutted with a stop sleeve (13), and the bottom surface of the stop sleeve (13) is abutted against the top surface of the insulating cone (12).

8. A GIS terminal for power transmission and transformation lines according to claim 7, characterized in that: The conductive column (14) is provided with a plurality of conductive sheets (15), a second screw (18) is provided on the top of the contact seat (19), the contact seat (19) protrudes from the top surface of the epoxy sleeve (17), and a protruding block is provided on the top of the stop sleeve (13), the top surface of the protruding block abuts against the bottom surface of the core inner sleeve (16).

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