A tee joint insulator device for an air insulated switchgear

Abstract

The utility model relates to a tee joint splicing type insulator device of air -filled cabinet belongs to air -filled cabinet insulator technical field, including insulating sheath and fixed installation in the insulating sheath's insulator body, and the insulator body includes electric conductor, first wiring end and second wiring end, and the electric conductor is tee joint structure, and the number of first wiring end is two, through being provided with two first wiring end on the insulating sheath, and two first wiring end and a second wiring end form tee joint formula structure to realize with the cable of multiple number, need not install one more insulator, save the installation space in the cabinet, and the insulating sheath is symmetrically set to the outer end sleeve of insulator body, and the insulating sheath is formed by a pair of half casing splicing, and the insulator body is easily embedded and installed in its inside, and the cable connected to the first wiring end is led out outside the cabinet through the cabinet body lead mechanism, which plays a through lead protection role and a lead limiting role.

Description

Technical Field

[0001] This utility model relates to the technical field of gas-insulated switchgear, and more particularly to a three-way splicing insulator device for gas-insulated switchgear. Background Technology

[0002] Indoor AC high-voltage gas-insulated metal-enclosed switchgear (hereinafter referred to as "gas-insulated switchgear") is a new generation of switchgear. The main switch of the gas-insulated switchgear can be either a permanent magnet vacuum circuit breaker or a spring-mechanism vacuum circuit breaker. The entire cabinet combines air insulation with sulfur hexafluoride gas compartments, making it both compact and expandable, suitable for power distribution automation. Gas-insulated switchgear features a compact structure, flexible operation, and reliable interlocking, providing satisfactory technical solutions for various applications (especially harsh environments) and different user requirements.

[0003] Traditional gas-insulated switchgear wiring insulators consist of a conductor and an insulating sheath surrounding the conductor. The conductor includes a first terminal that connects to external equipment and a second terminal that connects to internal equipment. In this two-way wiring insulator design, each first terminal can only connect a maximum of three cables. If more than three cables need to be connected to the first terminal, at least two such insulators are required, which undoubtedly increases installation costs and the space required for installation within the switchgear. Furthermore, when the first terminal connects to external equipment via cable, the cable needs to be led out of the switchgear. Current technologies often lack cable penetration protection, and the safety and flexibility of cable lead-out operations during actual installation need improvement.

[0004] To address this, we propose a three-way splicing insulator device for gas-insulated switchgear to effectively solve some of the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a three-way splicing insulator device for gas-filled switchgear.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a three-way splicing insulator device for a gas-insulated switchgear, comprising an insulating sleeve and an insulator body fixedly installed within the insulating sleeve. The insulator body includes a conductor, a first terminal, and a second terminal. The conductor has a three-way structure. There are two first terminals, and the pair of first terminals and the second terminal are symmetrically distributed. The insulating sleeve includes a semi-shell that is embedded and connected at the front and rear. Each pair of semi-shells has an installation cavity for installing the conductor. The second terminal and the pair of first terminals respectively penetrate the upper and lower ends of the installation cavity and extend outward. The pair of semi-shells are connected and sealed by an installation mechanism. The upper and lower ends of the insulating sleeve are respectively fixedly installed with a first terminal sleeve and a second terminal sleeve for fitting the first terminal and the second terminal. A vertical plate is fixedly connected to the rear side wall of the insulating sleeve. A cabinet lead wire mechanism is fixedly installed on the vertical plate. The cabinet lead wire mechanism is located above the pair of first terminal sleeves. A cabinet mounting plate is fixedly installed on the front side wall of the insulating sleeve.

[0007] Furthermore, both the half-shell and the mounting cavity are three-way structures that match the conductor. The inner walls of each pair of half-shells are covered with insulating sealing gaskets. When a pair of half-shells are installed together, the pair of insulating sealing gaskets are sealed to each other to effectively improve the sealing performance of the splicing installation of a pair of half-shells.

[0008] Furthermore, the mounting mechanism includes a mating sleeve fitted onto the outer wall of the semi-shell edge, and the outer edges of a pair of mating sleeves are fixedly connected by a first mounting screw.

[0009] Furthermore, one of the connecting sleeves has multiple limiting slots on its side wall, and the other connecting sleeve has multiple limiting strips fixedly connected to its side wall, corresponding to the positions of the limiting slots. The limiting strips and limiting slots are interference-fitted, which effectively improves the connection stability of the pair of half-shells. The corresponding limiting strips and limiting slots also play a guiding role during the installation of the pair of half-shells, enabling the rapid and accurate docking and installation of the insulating sleeve.

[0010] Furthermore, a fixing sleeve is fixedly fitted on the side wall of the second terminal sleeve and a pair of first terminal sleeves near the half-shell. The upper and lower fixed sleeves are fixedly connected to the side wall of the half-shell by the second mounting screw. The first terminal sleeve and the second terminal are installed separately on the insulating sleeve. When the insulator body is installed inside the insulating sleeve, the first terminal and the second terminal on the insulator body are exposed outside the insulating sleeve. At this time, the first terminal and the second terminal are respectively fitted and installed by the first terminal sleeve and the second terminal sleeve. Without affecting the sealing installation of the conductor, it is convenient for the first terminal and the second terminal to be connected to the external equipment respectively.

[0011] Furthermore, the outer ports of the second terminal sleeve and the pair of first terminal sleeves are provided with threaded interfaces for easy wiring operations.

[0012] Furthermore, the cabinet cable lead mechanism includes a cable lead plate fixedly connected to the top side wall of the vertical plate. The cable lead plate has a cable lead groove inside, and a cable lead tube connected to the front top of the cable lead plate is threaded to the inside of the cable lead tube. The cooperation between the cable lead plate and the cable lead tube facilitates the cable connected to a pair of first terminals to be led out of the cabinet, and plays a role in leading out and limiting the cable.

[0013] Furthermore, both the lead groove and the lead tube are covered with a sponge sealing sleeve to seal the outgoing cable.

[0014] Furthermore, a sealing sleeve is threaded onto the side wall of the lead tube, and a sealing ring is fixedly fitted onto the outer side wall of the sealing sleeve. The sealing sleeve can be adjusted in horizontal position according to the actual horizontal installation position of the cabinet, effectively improving the flexibility of cable installation.

[0015] Furthermore, the cabinet mounting plate has an L-shaped structure, and multiple sets of mounting holes are provided on the side wall of the cabinet mounting plate, and the cabinet mounting plate is located below the lead pipe.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This solution features two first terminals on the insulating sheath, forming a three-way structure with a second terminal. This allows for connection with multiple strands of cable without the need for an additional insulator, saving installation space within the cabinet. Simultaneously, symmetrically arranged insulating sheaths are fitted onto the outer ends of the insulator body. These sheaths are composed of a pair of half-shells, facilitating the embedding and installation of the insulator body within them. The cable connected to the first terminal is led out of the cabinet via the cabinet's lead-in mechanism, serving both as a guide protection function and a lead-in limit function.

[0018] 2. The separately designed spliced ​​first and second terminal sleeves facilitate the connection of the first and second terminals to external devices without affecting the sealing installation of the conductor.

[0019] 3. The interference fit between the limiting strip and the limiting slot effectively improves the connection stability of the pair of half-shells. The corresponding limiting strip and limiting slot also play a certain guiding role during the installation of the pair of half-shells, realizing the rapid and accurate docking and installation of the insulating sleeve.

[0020] 4. A sealing sleeve is threaded onto the side wall of the lead pipe. A sealing ring is fixedly fitted on the outer side wall of the sealing sleeve. The sealing sleeve can be adjusted in horizontal position according to the actual horizontal installation position of the cabinet, effectively improving the flexibility of cable installation. Attached Figure Description

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0022] Appendix Figure 1 This is a perspective view of the present utility model;

[0023] Appendix Figure 2 This is an internal cross-sectional view of the junction between the insulating sheath and the insulator body of this utility model;

[0024] Appendix Figure 3 This is a schematic diagram of the structure of the insulator body of this utility model;

[0025] Appendix Figure 4 This is a perspective view of the semi-shell portion of this utility model;

[0026] Appendix Figure 5 This is a perspective view of the first terminal sleeve of this utility model not being installed on the insulating sheath;

[0027] Appendix Figure 6 This is a perspective view of the first terminal sleeve of this utility model and the first terminal sleeve installed after the insulating sheath.

[0028] The components are as follows: 1. Insulating sleeve; 101. Half-shell; 102. First terminal sleeve; 103. Second terminal sleeve; 104. Mounting cavity; 2. Insulator body; 201. Conductor; 202. First terminal; 203. Second terminal; 3. Insulating sealing gasket; 4. Fixing sleeve; 5. Butt joint sleeve; 6. Vertical plate; 7. Lead plate; 8. Lead tube; 9. Sealing joint sleeve; 10. Sealing ring; 11. Cabinet mounting plate. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] As attached Figure 1-4 The present invention discloses a three-way splicing insulator device for a gas-insulated switchgear, comprising an insulating sleeve 1 and an insulator body 2 fixedly installed within the insulating sleeve 1. The insulator body 2 includes a conductor 201, a first terminal 202, and a second terminal 203. The conductor 201 has a three-way structure. There are two first terminals 202, and the pair of first terminals 202 and the second terminal 203 are symmetrically distributed. The pair of first terminals 202 enables electrical connection of three or more cables, replacing the installation of multiple insulators and saving installation space. The insulating sleeve 1 includes a half-shell 101 embedded and connected at the front and rear. Each pair of half-shells 101 has an installation cavity 104 for installing the conductor 201. The second terminal 203 and the pair of first terminals 202 respectively pass through the upper and lower ends of the installation cavity 104 and extend outward. The pair of half-shells 101 are installed by a sealing connection through an installation mechanism.

[0031] Both the half-shell 101 and the mounting cavity 104 are three-way structures that match the conductor 201. The inner walls of each pair of half-shells 101 are covered with insulating sealing gaskets 3. When the pair of half-shells 101 are installed by connecting them through the installation mechanism, the pair of insulating sealing gaskets 3 are sealed and attached to each other to effectively improve the sealing performance of the splicing installation of the pair of half-shells 101.

[0032] The installation mechanism includes a mating sleeve 5 fitted onto the outer side wall of the half-shell 101. The outer edges of a pair of mating sleeves 5 are fixedly connected by a first mounting screw. Specifically, multiple limiting slots are provided on the side wall of one mating sleeve 5, and multiple limiting strips corresponding to the positions of the limiting slots are fixedly connected on the side wall of the other mating sleeve 5. The limiting strips and limiting slots are interference-fitted. Through the interference fit between the limiting strips and limiting slots, the connection stability of the pair of half-shells 101 is effectively improved. In addition, the limiting strips and limiting slots corresponding to the positions also play a certain guiding role when the pair of half-shells 101 are installed, realizing the rapid and accurate mating installation of the insulating sleeve 1.

[0033] As attached Figure 2 and Figure 4-6As shown, the upper and lower ends of the insulating sleeve 1 are respectively fixedly installed with a first terminal sleeve 102 and a second terminal sleeve 103 for fitting the first terminal 202 and the second terminal 203. Fixing sleeves 4 are fixedly fitted onto the side wall of the second terminal sleeve 103 and a pair of first terminal sleeves 102 near the half-shell 101. The upper and lower distributed fixing sleeves 4 are all fixedly connected to the side wall of the half-shell 101 by second mounting screws. The first terminal sleeve 102 and the second terminal 203 are individually installed on the insulating sleeve 1. When the insulator body 2 is installed on... After the insulating sleeve 1 is inserted, the first terminal 202 and the second terminal 203 on the insulator body 2 are exposed on the outer end of the insulating sleeve 1. The outer ports of the second terminal sleeve 103 and the pair of first terminal sleeves 102 are provided with threaded interfaces for easy wiring. At this time, the first terminal 202 and the second terminal 203 are respectively installed by the first terminal sleeve 102 and the second terminal sleeve 103. Without affecting the sealed installation of the conductor 201, the first terminal 202 and the second terminal 203 can be easily connected to external equipment.

[0034] As attached Figure 1 As shown, a vertical plate 6 is fixedly connected to the rear side wall of the insulating sleeve 1. A cabinet lead wire mechanism is fixedly installed on the vertical plate 6. The cabinet lead wire mechanism is located above a pair of first terminal sleeves 102. A cabinet mounting plate 11 is fixedly installed on the front side wall of the insulating sleeve 1. The cabinet mounting plate 11 is located near the end of the second terminal sleeve 103. The cabinet mounting plate 11 has an L-shaped structure. Multiple sets of mounting holes are opened on the side wall of the cabinet mounting plate 11. The cabinet mounting plate 11 is located below the lead wire tube 8. The cabinet mounting plate 11 is used to fix the device to the inner wall of the gas-filled cabinet. The cabinet lead wire mechanism realizes the external lead wire operation of the cable led out from the first terminal 202.

[0035] The cabinet cable lead mechanism includes a cable lead plate 7 fixedly connected to the top side wall of the vertical plate 6. The cable lead plate 7 has a cable lead groove inside. The top front side of the cable lead plate 7 is threaded with a cable lead tube 8 that communicates with its interior. Those skilled in the art can first lead the cable out of the cable lead plate 7 and then install the cable lead tube 8, which facilitates the cable lead-out. The cooperation between the cable lead plate 7 and the cable lead tube 8 facilitates the cable connected to a pair of first terminals 202 to be led out of the cabinet, which plays a role in leading out and limiting the cable. In addition, the cable lead groove and the cable lead tube 8 are both covered with a sponge sealing sleeve, which plays a role in sealing the cable.

[0036] In addition, a sealing sleeve 9 is threaded onto the side wall of the lead pipe 8, and a sealing ring 10 is fixedly fitted on the outer side wall of the sealing sleeve 9. The sealing sleeve 9 can be adjusted in horizontal position according to the actual horizontal installation position of the cabinet, which effectively improves the flexibility of cable installation.

[0037] The insulating sleeve 1 of this utility model is provided with two first terminals 202. The two first terminals 202 and one second terminal 203 form a three-way structure to realize electrical connection with multiple cables, eliminating the need to install an additional insulator and saving installation space in the cabinet. At the same time, the insulating sleeve 1, which matches the structure of the three-way insulator body 2, is provided on the outside of the insulator body 2. The insulating sleeve 1 provides good insulation protection for the insulator body 2. The insulating sleeve 1 is composed of two half-shells 101 spliced ​​together to facilitate the embedding and installation of the insulating sleeve 1 inside the two half-shells 101. The mounting cavity 104 inside the two half-shells 101 Designed according to the actual structure and shape of the conductor 201, after installation, the first terminal 202 and the second terminal 203 at both ends of the first terminal 202 are exposed outside the spliced ​​half shell 101. At this time, the first terminal sleeve 102 and the second terminal sleeve 103 are fixedly installed to protect the first terminal 202 and the second terminal 203. The separately set spliced ​​first terminal sleeve 102 and second terminal sleeve 103 facilitate the connection of the first terminal 202 and the second terminal 203 to external devices without affecting the sealed installation of the conductor 201.

[0038] It should be emphasized that by installing cabinet mounting plates 11 and vertical plates 6 on the front and rear sides of the insulating sheath 1, the cabinet mounting plates 11 are used to fix the device to the side wall inside the cabinet, and the cabinet lead wire mechanism set on the vertical plate 6 facilitates the electrical connection between a pair of first terminals 202 and the equipment outside the cabinet. The specific operation is as follows: after the pair of first terminals 202 are wired, their ports pass through the lead wire plate 7 and the lead wire tube 8 in sequence and extend to the outside of the lead wire tube 8. The lead wire tube 8 after the cable is sleeved is fixedly embedded in the cabinet through the sealing connection sleeve 9. The sealing connection sleeve 9 can be adjusted horizontally according to the actual horizontal installation position of the cabinet. The cable is led out of the cabinet through the lead wire tube 8, which protects and limits the cable lead-out. At the same time, the cooperation between the sealing connection sleeve 9 and the sealing ring 10 also effectively achieves the sealing of the cable passing through the cabinet.

[0039] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of this utility model.

Claims

1. A three-way splicing insulator device for a gas-insulated switchgear, comprising an insulating sleeve (1) and an insulator body (2) fixedly installed within the insulating sleeve (1), characterized in that: The insulator body (2) includes a conductor (201), a first terminal (202) and a second terminal (203). The conductor (201) is a three-way structure. There are two first terminals (202), and a pair of first terminals (202) and second terminals (203) are symmetrically distributed. The insulating sleeve (1) includes a half-shell (101) that is embedded and connected at the front and rear. Each pair of half-shells (101) has an installation cavity (104) for installing the conductor (201). The second terminal (203) and the pair of first terminals (202) pass through the upper and lower ends of the installation cavity (104) and extend outward. The pair of half-shells (101) are installed by a sealing connection through an installation mechanism. The upper and lower ends of the insulating sleeve (1) are respectively fixedly installed with a first terminal sleeve (102) and a second terminal sleeve (103) for fitting the first terminal (202) and the second terminal (203). A vertical plate (6) is fixedly connected to the rear side wall of the insulating sleeve (1). A cabinet lead wire mechanism is fixedly installed on the vertical plate (6). The cabinet lead wire mechanism is located above a pair of first terminal sleeves (102). A cabinet mounting plate (11) is fixedly installed on the front side wall of the insulating sleeve (1).

2. The three-way splicing insulator device for a gas-insulated switchgear according to claim 1, characterized in that: The half-shell (101) and the mounting cavity (104) are both three-way structures that match the conductor (201), and the inner walls of each pair of half-shells (101) are covered with insulating sealing gaskets (3).

3. The three-way splicing insulator device for a gas-insulated switchgear according to claim 1, characterized in that: The mounting mechanism includes a mating sleeve (5) fitted onto the outer side wall of the edge of the semi-shell (101), and the outer edges of a pair of mating sleeves (5) are fixedly connected by a first mounting screw.

4. The three-way splicing insulator device for a gas-insulated switchgear according to claim 3, characterized in that: Multiple limiting slots are provided on the side wall of one of the docking sleeves (5), and multiple limiting strips corresponding to the positions of the limiting slots are fixedly connected on the side wall of the other docking sleeve (5). The limiting strips are interference-fitted with the limiting slots.

5. The three-way splicing insulator device for a gas-insulated switchgear according to claim 1, characterized in that: The second terminal sleeve (103) and a pair of first terminal sleeves (102) are fixedly fitted with fixing sleeves (4) on the side wall of one end of the half housing (101) near the half housing (101). The fixing sleeves (4) distributed vertically are fixedly connected to the side wall of the half housing (101) by the second mounting screw.

6. A three-way splicing insulator device for a gas-insulated switchgear according to claim 5, characterized in that: The outer ports of the second terminal sleeve (103) and the pair of first terminal sleeves (102) are all provided with threaded interfaces.

7. The three-way splicing insulator device for a gas-insulated switchgear according to claim 1, characterized in that: The cabinet lead wire mechanism includes a lead wire plate (7) fixedly connected to the top side wall of the vertical plate (6). The lead wire plate (7) has a lead wire groove, and the front top of the lead wire plate (7) is threadedly connected to a lead wire tube (8) that communicates with its interior.

8. A three-way splicing insulator device for a gas-insulated switchgear according to claim 7, characterized in that: Both the lead groove and the lead tube (8) are covered with a sponge sealing sleeve.

9. A three-way splicing insulator device for a gas-insulated switchgear according to claim 8, characterized in that: A sealing sleeve (9) is threaded onto the side wall of the lead tube (8), and a sealing ring (10) is fixedly fitted onto the outer side wall of the sealing sleeve (9).

10. A three-way splicing insulator device for a gas-insulated switchgear according to claim 9, characterized in that: The cabinet mounting plate (11) has an L-shaped structure. Multiple sets of mounting holes are opened on the side wall of the cabinet mounting plate (11), and the cabinet mounting plate (11) is located below the lead pipe (8).

Images