An assembled GIS terminal

Abstract

The utility model discloses an assembly type GIS terminal, including upper electrode and install upper fitting in the lower extreme of upper electrode, the lower extreme outer wall fixed connection of upper fitting has stress cone epoxy sleeve pipe combination spare, the inside of stress cone epoxy sleeve pipe combination spare is provided with built -in electrode, the downside of built -in electrode is provided with cable, the left and right two ends outer wall between stress cone epoxy sleeve pipe combination spare is provided with the cast lead of lead, the circular outer wall of cast lead is provided with dustproof cover, through install dustproof cover, effectively block sand dust and enter the connecting gap, maintain the even distribution of terminal internal electric field to prevent the insulation performance decline caused by sand dust invasion, ensure that GIS terminal can reliably operate under high -voltage environment, make the connecting surface always keep clean, maintain low contact resistance, guarantee the reliability of electrical connection, avoid the electrical fault caused by the increase of contact resistance.

Description

Technical Field

[0001] This utility model belongs to the field of GIS terminal related technology, and specifically relates to a prefabricated GIS terminal. Background Technology

[0002] A prefabricated GIS terminal is a cable termination device specifically designed for use inside gas-insulated, enclosed switchgear (GIS). It uses SF6 hexafluoride gas as the external insulation medium and is a key component of the gas insulation section of the GIS equipment. This terminal is designed to achieve a reliable connection between the cable and the GIS equipment, ensuring the stable operation of the power system.

[0003] However, in some special environments, such as dusty areas, dust may enter the joint gaps, affecting electrical and mechanical performance. Utility Model Content

[0004] The purpose of this invention is to provide a prefabricated GIS terminal to solve the problem mentioned in the background art that in areas with a lot of sand and dust, sand and dust may enter the connection gaps, affecting electrical and mechanical performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated GIS terminal, including an upper electrode and an upper fitting installed at the lower end of the upper electrode;

[0006] The lower outer wall of the upper hardware is fixedly connected to a stress cone epoxy sleeve assembly;

[0007] The stress cone epoxy sleeve assembly has an internally installed electrode.

[0008] A cable is provided on the lower side of the built-in electrode, and lead enamel is provided between the outer walls of the left and right ends of the stress cone epoxy sleeve assembly.

[0009] The lead-lined outer circular wall is fitted with a dust cover.

[0010] Preferably, a base plate is fixedly connected to the circular outer wall of the stress cone epoxy sleeve assembly near the lower side to restrict the position of the dust cover, and a top ring is fixedly connected to the upper outer wall of the dust cover.

[0011] Preferably, the upper circular outer wall of the top ring has an opening inside, and the right circular outer wall of the top ring is fixedly connected with a hook.

[0012] Preferably, the dust cover is made of rubber material, and creases are provided on the circular inner wall of the dust cover.

[0013] Preferably, the upper outer wall of the upper electrode is provided with a fastening screw that engages with the upper fitting to limit the position between the upper electrode and the upper fitting.

[0014] Preferably, the outer circular wall of the upper hardware is provided with a locking nut, and the upper outer wall of the locking nut is provided with a countersunk screw hole for external positioning bolts to be screwed in.

[0015] Preferably, the lower outer wall of the upper fitting is provided with a lower fitting.

[0016] Preferably, the circular outer wall of the upper hardware is provided with a sealing ring a and a sealing ring b near the upper and lower sides respectively, wherein the sealing ring a is for axial sealing and the sealing ring b is for radial sealing.

[0017] Preferably, the circular outer wall of the cable is provided with a clamp near the lower side.

[0018] Compared with the prior art, this utility model provides a prefabricated GIS terminal, which has the following beneficial effects:

[0019] By installing dust covers, sand and dust can be effectively blocked from entering the connection gaps, maintaining a uniform distribution of the electric field inside the terminal. This prevents the insulation performance from deteriorating due to sand and dust intrusion, ensuring that the GIS terminal can operate reliably in a high-voltage environment, keeping the connection surface clean at all times, maintaining low contact resistance, ensuring the reliability of electrical connections, and avoiding electrical faults caused by increased contact resistance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a prefabricated GIS terminal structure according to the present invention.

[0021] Figure 2 This is a partial structural diagram of the upper electrode region of this utility model.

[0022] Figure 3 This is a partial structural diagram of the dust cover area of ​​this utility model.

[0023] Figure 4 This is a partial structural diagram of the dust cover area of ​​this utility model.

[0024] In the diagram: 1. Upper electrode; 2. Upper fittings; 3. Stress cone epoxy sleeve assembly; 4. Internal electrode; 5. Lower fittings; 6. Lead-lined; 7. Clamp; 8. Fastening screw; 9. Locking nut; 10. Sealing ring a; 11. Sealing ring b; 12. Cable; 13. Dust cover; 14. Top ring; 15. Through port; 16. Hook; 17. Base plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figure 1-4 The prefabricated GIS terminal shown includes an upper electrode 1 and an upper fitting 2 installed at the lower end of the upper electrode 1.

[0027] The lower outer wall of the upper hardware 2 is fixedly connected to a stress cone epoxy sleeve assembly 3;

[0028] The stress cone epoxy sleeve assembly 3 has an internally installed electrode 4;

[0029] A cable 12 is installed on the lower side of the built-in electrode 4, and lead lining 6 is installed between the outer walls of the left and right ends of the stress cone epoxy sleeve assembly 3. When the GIS terminal is connected to the power system and powered on, the current is transmitted to the cable 12 from the upper electrode 1 through the upper hardware 2 and the built-in electrode 4 according to the designed conduction path. During this process, the stress cone continuously optimizes the electric field distribution at the connection between the cable and the built-in electrode 4, and the epoxy sleeve ensures the insulation performance of the internal electrical components, ensuring stable and safe current transmission. During operation, the stress cone and epoxy sleeve continuously play their role in insulation and electric field optimization, preventing internal partial discharge or insulation breakdown and other faults.

[0030] A dust cover 13 is fitted onto the circular outer wall of the lead-lined 6. The dust cover 13 is made of rubber material and is fitted onto the circular outer wall of the lead-lined 6. When stretched, it can cover the terminal. After the terminal is inverted and the interface is connected, it can effectively prevent sand and dust and other impurities from entering the gap between the GIS terminal and the connection.

[0031] like Figure 3 and Figure 4 As shown, a base plate 17 is fixedly connected to the circular outer wall of the stress cone epoxy sleeve assembly 3 near the lower side to restrict the position of the dust cover 13. A top ring 14 is fixedly connected to the upper outer wall of the dust cover 13. An opening 15 is provided inside the upper circular outer wall of the top ring 14. A hook 16 is fixedly connected to the right circular outer wall of the top ring 14. The dust cover 13 is made of rubber material, and creases are provided on the circular inner wall of the dust cover 13.

[0032] The base plate 17 is used to limit the position of the dust cover 13 and prevent it from moving up and down during operation. The top ring 14, which is fixedly connected to the upper outer wall of the dust cover 13, not only enhances the structural strength of the upper end of the dust cover, but also limits the direction of the dust cover 13 when it is stretched. The hook 16 can be used to connect with other fixed structures to further fix the position of the dust cover 13 and ensure that the dust cover 13 can stably play its dustproof role under different working conditions.

[0033] like Figure 2 As shown, the upper outer wall of the upper electrode 1 is provided with a fastening screw 8 that engages with the upper hardware 2 to limit the position between the upper electrode 1 and the upper hardware 2. The circular outer wall of the upper hardware 2 is provided with a locking nut 9. The upper outer wall of the locking nut 9 is provided with a countersunk screw hole for external positioning bolts to engage.

[0034] The upper hardware 2 has a locking nut 9 on its circular outer wall. The upper outer wall has a countersunk screw hole, which can be screwed in by an external positioning bolt to ensure the accurate relative position of the upper hardware 2 and other components and to enhance the reliability of the connection. When the upper hardware 2 extends sufficiently beyond the built-in electrode 4 and the locking nut is tightened in place, the countersunk screw hole can rotate into place with the positioning hole. This can be used to determine whether the upper hardware 2 and the locking nut are installed in place. In addition, after the countersunk bolt is tightened, it can effectively prevent the locking nut 13 from loosening.

[0035] like Figure 1 As shown, a lower fitting 5 is provided on the lower outer wall of the upper fitting 2.

[0036] The upper inner side of the lower hardware 5 provides oblique upward stress support to the stress cone epoxy sleeve assembly through the wedge-shaped surface. The stress cone is installed on the outside of the cable and is installed into the epoxy sleeve together with the cable. The upward force of the lower hardware makes the stress cone installed in place. The stress cone and the inner cavity of the epoxy sleeve are interference fit to ensure that there is no air gap inside after installation.

[0037] like Figure 2 As shown, the upper hardware 2 has a circular outer wall with a sealing ring a10 and a sealing ring b11 near the upper and lower sides respectively. The sealing ring a10 is for axial sealing and the sealing ring b11 is for radial sealing.

[0038] Two sealing rings are used, one for axial sealing and the other for radial sealing, effectively ensuring the product's sealing performance. Both sealing rings A10 and B11 are made of fluororubber, which has excellent high-temperature resistance, aging resistance, excellent chemical stability, and good mechanical properties, ensuring stable sealing performance even when the cable generates heat during operation.

[0039] like Figure 1As shown, a clamp 7 is provided on the circular outer wall of cable 12 near the lower side.

[0040] The clamp 7 is used to fix the cable 12 and prevent the cable 12 from swaying left and right.

[0041] The implementation principle of this embodiment is as follows: When the GIS terminal is connected to the power system and powered on, the current is transmitted to the cable 12 from the upper electrode 1 through the upper hardware 2 and the built-in electrode 4 according to the designed conduction path. During this process, the stress cone continuously optimizes the electric field distribution at the connection between the cable and the built-in electrode 4, and the epoxy sleeve ensures the insulation performance of the internal electrical components, ensuring stable and safe current transmission. During operation, the stress cone and epoxy sleeve continuously play their role in insulation and electric field optimization, preventing faults such as partial discharge or insulation breakdown from occurring inside. The dust cover 13 is fitted onto the circular outer wall of the lead-lined 6 and is made of rubber material. When stretched, it can cover the terminal. After the terminal is inverted and the interface is connected, it effectively prevents impurities such as sand and dust from entering the gap between the GIS terminal and the connection.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated GIS terminal, comprising an upper electrode (1) and an upper fitting (2) installed at the lower end of the upper electrode (1); The lower outer wall of the upper fitting (2) is fixedly connected to a stress cone epoxy sleeve assembly (3); The stress cone epoxy sleeve assembly (3) is provided with an internal electrode (4); A cable (12) is provided on the lower side of the built-in electrode (4), and lead enamel (6) is provided between the outer walls of the left and right ends of the stress cone epoxy sleeve assembly (3). Its features are: The circular outer wall of the lead-lined material (6) is fitted with a dust cover (13).

2. The prefabricated GIS terminal according to claim 1, characterized in that: The circular outer wall of the stress cone epoxy sleeve assembly (3) is fixedly connected to a base plate (17) near the lower side to restrict the position of the dust cover (13), and the upper outer wall of the dust cover (13) is fixedly connected to a top ring (14).

3. A prefabricated GIS terminal according to claim 2, characterized in that: The upper circular outer wall of the top ring (14) has an opening (15) inside, and the right circular outer wall of the top ring (14) is fixedly connected with a hook (16).

4. A prefabricated GIS terminal according to claim 1, characterized in that: The dust cover (13) is made of rubber material, and creases are provided on the circular inner wall of the dust cover (13).

5. A prefabricated GIS terminal according to claim 1, characterized in that: The upper outer wall of the upper electrode (1) is provided with a fastening screw (8) that engages with the upper fitting (2) to limit the position between the upper electrode (1) and the upper fitting (2).

6. A prefabricated GIS terminal according to claim 1, characterized in that: The upper hardware (2) is provided with a locking nut (9) on its circular outer wall. The upper outer wall of the locking nut (9) is provided with a countersunk screw hole for external positioning bolts to be screwed in.

7. A prefabricated GIS terminal according to claim 1, characterized in that: The lower outer wall of the upper fitting (2) is provided with a lower fitting (5).

8. A prefabricated GIS terminal according to claim 1, characterized in that: The upper hardware (2) has a circular outer wall with a sealing ring a (10) and a sealing ring b (11) respectively near the upper and lower sides. The sealing ring a (10) is for axial sealing and the sealing ring b (11) is for radial sealing.

9. A prefabricated GIS terminal according to claim 1, characterized in that: The cable (12) has a clamp (7) on its circular outer wall near the lower side.

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