GIS terminal

Abstract

The utility model provides a GIS (Gas Insulated Switchgear) terminal, which relates to the technical field of cable terminal equipment and comprises an epoxy sleeve, a nylon ring and a tail pipe. The epoxy sleeve is provided with a pipe cavity, and an external cable can be inserted into the pipe cavity of the epoxy sleeve; the nylon ring is arranged at the bottom end of the epoxy sleeve and located on the periphery of the sleeve cavity, and the nylon ring can be arranged on the periphery of the cable; the tail pipe is connected to the side, away from the epoxy sleeve, of the nylon ring. The tail pipe can be arranged on the periphery of the cable in a sleeving mode and can be connected to the cable. Therefore, the nylon ring arranged at the bottom end of the epoxy sleeve can play a role in insulation together with the epoxy sleeve, the insulation creepage distance of the whole GIS terminal can be increased, the insulation performance can be improved, the safety problem caused by insufficient design of the creepage distance of the GIS terminal in a high altitude area or a humid environment can be effectively solved, and the service life of the GIS terminal is prolonged. And potential safety hazards such as flashover in the closing process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable terminal equipment, in particular to a GIS terminal. Background Art

[0002] With the continuous development of the power industry, the application of cable systems is becoming more and more extensive. GIS (Gas-Insulated Switchgear) terminals play a vital role in the field of cable accessories. GIS terminals are more than just a simple connection point between the cable and the power system; they are also key components that ensure the safe and efficient operation of the power grid.

[0003] GIS terminals play a crucial role in connecting underground cables to the substation GIS gas chamber. They not only establish an electrical connection between the cable and the GIS gas chamber, but also ensure optimal electrical performance at the connection through precise sealing and insulation design. GIS terminals also possess excellent mechanical properties, capable of withstanding the various mechanical stresses generated during cable operation, ensuring a reliable and stable connection.

[0004] In related technologies, GIS terminals usually include epoxy casings, which are made of high-strength epoxy resin materials. They can ensure that the GIS terminal has good insulation performance. It can be said that epoxy casings are the most reliable guarantee for GIS terminals to avoid breakdown. In addition, epoxy casings can prevent the intrusion of external pollution and moisture in various harsh environments, ensuring the long-term stable operation of GIS terminals.

[0005] However, in high-altitude areas or humid environments, the creepage distance of GIS terminals may be insufficiently designed, which can easily lead to safety hazards. Moreover, during power system operation, when the line is closed, the rapid change in current will produce a momentary high field strength phenomenon. At the moment when the current increases rapidly, the electric field strength around the cable and GIS terminal will increase sharply, which can easily lead to insulation breakdown and potential safety hazards such as flashover. Utility Model Content

[0006] The utility model provides a GIS terminal to solve the defects of the prior art GIS terminal, such as insufficient creepage distance design, potential safety hazards in high-altitude areas or humid environments, insulation breakdown at the moment of line closing, and potential safety hazards such as flashover.

[0007] The utility model provides a GIS terminal, comprising:

[0008] An epoxy sleeve having a lumen into which an external cable can be plugged;

[0009] A nylon ring, which is arranged at the bottom end of the epoxy sleeve and located at the periphery of the lumen. The nylon ring can be arranged at the periphery of the cable;

[0010] The tail tube is connected to a side of the nylon ring away from the epoxy sleeve. The tail tube can be sleeved on the outer periphery of the cable and can be connected to the cable.

[0011] According to the utility model, a GIS terminal further includes a first sealing ring and a second sealing ring. The first sealing ring is arranged between the epoxy sleeve and the nylon ring, and the second sealing ring is arranged between the nylon ring and the tail pipe.

[0012] According to a GIS terminal provided by the utility model, a first sealing groove is provided on the top end surface of the nylon ring abutting against the epoxy sleeve, and the first sealing ring is provided in the first sealing groove.

[0013] According to a GIS terminal provided by the utility model, a second sealing groove is provided on the top end surface of the tail pipe abutting against the nylon ring, and the second sealing ring is provided in the second sealing groove.

[0014] A GIS terminal provided by the utility model also includes:

[0015] A first bolt, wherein the nylon ring is provided with a countersunk hole penetrating along the thickness direction thereof, and the end surface of the epoxy sleeve abutting against the nylon ring is provided with a first threaded hole corresponding to the position of the countersunk hole, and the first bolt passes through the countersunk hole and is threadedly connected to the first threaded hole of the epoxy sleeve;

[0016] The second bolt is provided with a through hole penetrating along the thickness direction thereof, and the end surface of the nylon ring abutting against the tail pipe is provided with a second threaded hole corresponding to the position of the through hole. The second bolt passes through the through hole and is threadedly connected to the second threaded hole of the nylon ring.

[0017] According to a GIS terminal provided by the utility model, there are multiple countersunk holes, and the multiple countersunk holes are arranged in sequence at intervals along the circumferential direction of the nylon ring; there are multiple through holes, and the multiple through holes are arranged in sequence at intervals along the circumferential direction of the tail pipe.

[0018] According to the utility model, a GIS terminal is provided, which further includes a stress cone, wherein the stress cone is arranged inside the epoxy sleeve and can be sleeved on the outer circumference of the cable.

[0019] According to the utility model, a GIS terminal further includes: a cone support assembly, which is arranged on the inner side of the nylon ring and the tail pipe, abuts against the bottom of the stress cone, and is connected to the epoxy sleeve.

[0020] A GIS terminal provided by the utility model also includes:

[0021] A stop sleeve, the stop sleeve is arranged inside the epoxy sleeve, and the stop sleeve can be sleeved on the outer circumference of the cable;

[0022] A plugging rod is arranged inside the epoxy sleeve and can be connected to the end of the cable.

[0023] According to the utility model, a GIS terminal is provided, which also includes: a heat shrink tube, which is arranged on the side of the tail tube away from the nylon ring, and the heat shrink tube is at least partially sleeved on the outer periphery of the tail tube. The heat shrink tube can be sleeved on the outer periphery of the cable.

[0024] The GIS terminal provided by the utility model includes an epoxy sleeve, a nylon ring and a tail pipe. After the external cable is connected to the circuit components in the GIS gas chamber with the help of the GIS terminal, the nylon ring arranged at the bottom end of the epoxy sleeve can simultaneously play an insulating role together with the epoxy sleeve, thereby increasing the insulation creepage distance of the entire GIS terminal and improving the insulation performance. It can effectively solve the safety problems caused by insufficient creepage distance design of the GIS terminal in high-altitude areas or humid environments, and can also avoid potential safety hazards such as flashover during the closing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a structural diagram of a GIS terminal according to one embodiment of the present utility model.

[0027] Figure 2 yes Figure 1 Enlarged view of part P.

[0028] Figure 3 It is a schematic structural diagram of a nylon ring in a GIS terminal according to one embodiment of the present utility model.

[0029] Figure 4 yes Figure 3A schematic structural diagram of another perspective of the nylon ring shown in FIG.

[0030] Figure 5 It is along Figure 4 Cross-sectional view taken along the AA direction.

[0031] Reference numerals:

[0032] 110. Epoxy sleeve; 120. Nylon ring; 121. First sealing groove; 122. Countersunk hole; 123. Second threaded hole; 130. Tail pipe; 131. Second sealing groove; 141. Fixing flange; 142. Fixing bolt; 151. First sealing ring; 152. Second sealing ring; 161. First bolt; 162. Second bolt; 170. Stress cone; 180. Cone support assembly; 181. Cone support; 182. Support rod; 183. Elastic member; 184. Flange; 185. Connecting rod; 186. Fastening nut; 210. Cable; 220. GIS air chamber; 310. Stop sleeve; 320. Plug-in rod; 330. Heat shrink tubing; 340. Lead lining. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In one embodiment of the present invention, a GIS terminal is provided. The GIS terminal can connect to a cable and can be at least partially inserted into a GIS air chamber. The GIS terminal can be used to electrically connect an external cable to a circuit element in the GIS air chamber. Moreover, the GIS terminal includes an epoxy sleeve, a nylon ring, and a tail pipe. The nylon ring is arranged between the epoxy sleeve and the tail pipe. The nylon ring is an insulating structure, which can increase the creepage distance of the GIS terminal and improve the safety performance of the GIS terminal. Figures 1 to 5 The figure further describes the GIS terminal in this embodiment.

[0035] Specifically, if Figure 1 and Figure 2 As shown, the GIS terminal in this embodiment includes: an epoxy sleeve 110 , a nylon ring 120 and a tail pipe 130 .

[0036] Among them, the epoxy sleeve 110 has a lumen, and the external cable 210 can be inserted into the lumen of the epoxy sleeve 110; the nylon ring 120 is arranged at the bottom end of the epoxy sleeve 110 and is located on the periphery of the lumen, and the nylon ring 120 can be arranged on the periphery of the cable 210; the tail tube 130 is connected to the side of the nylon ring 120 facing away from the epoxy sleeve 110, and the tail tube 130 can be sleeved on the periphery of the cable 210 and can be connected to the cable 210.

[0037] For example, to ensure insulation, the epoxy sleeve 110 can be made of a high-strength epoxy resin material. Furthermore, the epoxy sleeve 110 can be constructed as a hollow cylindrical structure with a lumen disposed therein. The epoxy sleeve 110 has a predetermined length, with a top and a bottom end. The top end of the epoxy sleeve 110 can be inserted into the GIS air chamber 220, and the external cable 210 can be plugged into the lumen from the bottom end of the epoxy sleeve 110.

[0038] In one embodiment, Figure 1 As shown, the GIS gas chamber 220 has a accommodating cavity, which can be filled with insulating gas. The bottom of the GIS gas chamber 220 is provided with an opening. The epoxy sleeve 110 can be at least partially inserted into the accommodating cavity of the GIS gas chamber 220 through the opening at the bottom of the GIS gas chamber 220. Thus, the external cable 210 can be electrically connected to the circuit elements in the GIS gas chamber 220 via the GIS terminal.

[0039] The epoxy sleeve 110 can be fixedly connected to the GIS gas chamber 220, as an implementation method, such as Figure 1 As shown, the bottom end of the epoxy sleeve 110 is provided with a mounting flange, which extends outward in the radial direction of the epoxy sleeve 110. The GIS terminal also includes a fixing flange 141 and fixing bolts 142. The fixing flange 141 is provided with multiple fixing through-holes along its circumference. The GIS air chamber 220 is provided with a mounting flange at the bottom for connecting to the epoxy sleeve 110. The mounting flange is provided with multiple fixing bolt 142 holes along its circumference. The fixing bolt 142 holes and the fixing through-holes are positioned in a one-to-one correspondence.

[0040] During actual installation, the epoxy sleeve 110 can be inserted into the GIS air chamber 220, with the mounting flange of the epoxy sleeve 110 abutting against the mounting flange of the GIS air chamber 220. The fixing flange 141 is then placed on the side of the mounting flange facing away from the mounting flange, so that the mounting flange of the epoxy sleeve 110 is clamped between the mounting flange and the fixing flange 141. Finally, multiple bolts are passed through the fixing holes of the fixing flange 141 and threaded into the fixing bolt holes 142 of the mounting flange. This secures the epoxy sleeve 110 to the bottom of the GIS terminal.

[0041] For example, nylon ring 120 can be made of nylon. It is annular and can be securely attached to the bottom end of epoxy sleeve 110. The through hole in the middle of nylon ring 120 corresponds to the lumen of epoxy sleeve 110. When the external cable 210 is inserted into the lumen of epoxy sleeve 110, nylon ring 120 is positioned around the outer circumference of the cable 210. In practice, the thickness of nylon ring 120 can be adjusted based on actual needs.

[0042] For example, the tail tube 130 can be made of a metal material and has a hollow cylindrical structure. The tail tube 130 can be fixedly connected to the side of the nylon ring 120 that faces away from the epoxy sleeve 110. The lumen of the tail tube 130 corresponds to the through-hole in the middle of the nylon ring 120. During actual installation, the end of the external cable 210 can be inserted into the lumen of the epoxy sleeve 110 after passing through the lumen of the tail tube 130.

[0043] In actual application scenarios, after the external cable 210 is connected to the circuit elements in the GIS air chamber 220 with the help of the GIS terminal in this embodiment, the nylon ring 120 arranged at the bottom end of the epoxy sleeve 110 can simultaneously play an insulating role with the epoxy sleeve 110, thereby increasing the insulation creepage distance of the entire GIS terminal and improving the insulation performance. It can effectively solve the safety problems caused by insufficient creepage distance design of the GIS terminal in high-altitude areas or humid environments, and can also avoid potential safety hazards such as flashover during the closing process.

[0044] Furthermore, in one embodiment, in order to effectively improve the sealing effect between the nylon ring 120 and the epoxy sleeve 110 and the tail pipe 130, as shown in FIG. Figure 1 and Figure 2 As shown, the GIS terminal further includes a first sealing ring 151 and a second sealing ring 152 . The first sealing ring 151 is disposed between the epoxy sleeve 110 and the nylon ring 120 , and the second sealing ring 152 is disposed between the nylon ring 120 and the tail pipe 130 .

[0045] For example, the first sealing ring 151 and the second sealing ring 152 can each be made of a rubber material. The first sealing ring 151 is disposed between the epoxy sleeve 110 and the nylon ring 120. Both sides of the first sealing ring 151 can simultaneously abut against the epoxy sleeve 110 and the nylon ring 120, thereby forming an effective seal between the epoxy sleeve 110 and the nylon ring 120. The second sealing ring 152 is disposed between the nylon ring 120 and the tail pipe 130. Both sides of the second sealing ring 152 can simultaneously abut against the nylon ring 120 and the tail pipe 130, thereby forming an effective seal between the nylon ring 120 and the tail pipe 130.

[0046] Furthermore, in one embodiment, in order to effectively install the first sealing ring 151, as shown in FIG. Figure 2 、 Figure 3 and Figure 5 As shown, the top surface of the nylon ring 120 abutting against the epoxy sleeve 110 is provided with a first sealing groove 121 , and the first sealing ring 151 is provided in the first sealing groove 121 .

[0047] Exemplarily, a top surface is provided at the top of the nylon ring 120 in the thickness direction, and a bottom surface is provided at the bottom end of the epoxy sleeve 110. The top surface of the nylon ring 120 and the bottom surface of the epoxy sleeve 110 are both planes. The top surface of the nylon ring 120 can abut against the bottom surface of the epoxy sleeve 110. The top surface of the nylon ring 120 is also provided with an embedded first sealing groove 121. The first sealing groove 121 is formed in a ring shape and extends along the circumferential direction of the nylon ring 120.

[0048] During actual installation, the first sealing ring 151 can be placed in the first sealing groove 121 in advance. Then, when the top surface of the nylon ring 120 and the bottom surface of the epoxy sleeve 110 abut each other, the first sealing ring 151 can simultaneously abut against the nylon ring 120 and the epoxy sleeve 110, thereby forming a seal between the two. Moreover, since the first sealing ring 151 is placed in the first sealing groove 121, it can be prevented from shifting and falling off.

[0049] Furthermore, in one embodiment, in order to effectively install the second sealing ring 152, as shown in FIG. Figure 2 As shown, a second sealing groove 131 is provided on the top end surface of the tail pipe 130 abutting against the nylon ring 120 , and a second sealing ring 152 is provided in the second sealing groove 131 .

[0050] Exemplarily, the tail pipe 130 may include a pipe body and an annular connecting portion, the annular connecting portion is made of metal material and is constructed as an annular structure. The annular connecting portion can be fixedly connected to the end of the pipe body by welding, and the annular connecting portion can be used to connect the nylon ring 120.

[0051] A top surface is provided at the top of the annular connection portion in the thickness direction, and the top surface is the top surface of the tail pipe 130. A bottom surface is provided at the bottom end of the nylon ring 120. The top surface of the annular connection portion and the bottom surface of the nylon ring 120 are both planes. The top surface of the annular connection portion can abut against the bottom surface of the nylon ring 120. The top surface of the annular connection portion is provided with an embedded second sealing groove 131. The second sealing groove 131 is formed in an annular shape and extends along the circumferential direction of the annular connection portion.

[0052] During actual installation, the second sealing ring 152 can be pre-placed in the second sealing groove 131. When the top surface of the tail pipe 130 and the bottom surface of the nylon ring 120 abut each other, the second sealing ring 152 can simultaneously abut against the tail pipe 130 and the nylon ring 120, thereby forming a seal between the two. Furthermore, since the second sealing ring 152 is positioned in the second sealing groove 131, it can be prevented from shifting and falling off.

[0053] Furthermore, in one embodiment, in order to ensure that the epoxy sleeve 110, the nylon ring 120 and the tail pipe 130 can be effectively connected, as shown in FIG. Figure 1 and Figure 2 As shown, the GIS terminal further includes a first bolt 161 and a second bolt 162 .

[0054] Among them, the nylon ring 120 is provided with a countersunk hole 122 passing through it along the thickness direction, and the end face of the epoxy sleeve 110 abutting against the nylon ring 120 is provided with a first threaded hole corresponding to the position of the countersunk hole 122, and the first bolt 161 is threadedly connected to the first threaded hole of the epoxy sleeve 110 through the countersunk hole 122; the tail pipe 130 is provided with a through hole passing through it along the thickness direction, and the end face of the nylon ring 120 abutting against the tail pipe 130 is provided with a second threaded hole 123 corresponding to the position of the through hole, and the second bolt 162 is threadedly connected to the second threaded hole 123 of the nylon ring 120 through the through hole.

[0055] The first bolt 161 includes a head and a screw portion connected to each other. In one embodiment, as shown in FIG. Figure 5 As shown, the countersunk hole 122 penetrates along the thickness direction of the nylon ring 120. The first bolt 161 can pass through the countersunk hole 122 from the bottom end of the nylon ring 120 and be threadedly connected to the first threaded hole of the epoxy sleeve 110, thereby fixing the nylon ring 120 to the epoxy sleeve 110. Moreover, the head of the first bolt 161 can fully enter the countersunk hole 122 and will not interfere with the connection between the tail pipe 130 and the nylon ring 120.

[0056] Exemplarily, the second bolt 162 also includes a head and a screw portion connected to each other, such as Figure 2 and Figure 5 As shown, the through hole on the tail pipe 130 is provided on and passes through the annular connecting portion. The second bolt 162 can pass through the through hole from bottom to top from the end of the annular connecting portion close to the pipe body and be threadedly connected to the second threaded hole 123 on the nylon ring 120. The head of the second bolt 162 can abut against the annular connecting portion. In this way, the tail pipe 130 can be fixedly connected to the nylon ring 120.

[0057] Furthermore, in order to ensure the connection effect between the epoxy sleeve 110, the nylon ring 120 and the tail pipe 130, in one embodiment, Figure 3 and Figure 4 As shown, there are multiple countersunk holes 122 , which are sequentially spaced apart along the circumferential direction of the nylon ring 120 ; there are multiple through holes, which are sequentially spaced apart along the circumferential direction of the tail pipe 130 .

[0058] For example, multiple countersunk holes 122 can be evenly spaced along the circumference of the nylon ring 120, and the epoxy sleeve 110 is also provided with multiple first threaded holes corresponding to the countersunk holes 122. During actual installation, the multiple first bolts 161 can be placed in the multiple countersunk holes 122 and connected to the multiple first threaded holes of the epoxy sleeve 110. This ensures that the nylon ring 120 can be effectively connected to the epoxy sleeve 110.

[0059] Similarly, multiple through-holes can be evenly spaced along the circumference of tail pipe 130, and nylon ring 120 is also provided with multiple second threaded holes 123 corresponding to the through-holes. During installation, multiple second bolts 162 can be placed in the multiple through-holes and connected to the multiple second threaded holes 123 of nylon ring 120. This ensures that tail pipe 130 is effectively connected to nylon ring 120.

[0060] In a specific embodiment, on the nylon ring 120, a plurality of countersunk holes 122 and a plurality of second threaded holes 123 are sequentially spaced apart in the circumferential direction of the nylon ring 120. For example, Figure 4 As shown, there are eight countersunk holes 122 and eight second threaded holes 123, which are spaced apart in the circumferential direction of the nylon ring 120. Furthermore, the angle between adjacent countersunk holes 122 and second threaded holes 123 in the circumferential direction of the nylon ring 120 is 22.5°.

[0061] Further, in one embodiment, Figure 1 As shown, the GIS terminal further includes a stress cone 170 . The stress cone 170 is disposed inside the epoxy sleeve 110 . The stress cone 170 can be sleeved on the outer circumference of the cable 210 .

[0062] Exemplarily, the lumen of the epoxy sleeve 110 is at least partially constructed as a conical inner wall, the larger end of the conical inner wall is opened toward the bottom end of the epoxy sleeve 110, and the outer wall of the stress cone 170 is at least partially constructed as a conical structure, which can be adapted to fit the conical inner wall of the lumen, and the stress cone 170 is sleeved on the cable 210 in an interference fit manner.

[0063] During actual installation, the stress cone 170 can be first put on the cable 210, and then the stress cone 170 and the cable 210 can be inserted into the lumen of the epoxy sleeve 110. Since the conical structure of the stress cone 170 can adapt to the conical inner wall of the lumen, the stress cone 170 can be used to effectively position the cable 210.

[0064] Furthermore, in one embodiment, in order to prevent the stress cone 170 from being separated from the lumen of the epoxy sleeve 110, as shown in FIG. Figure 1 and Figure 2 As shown, the GIS terminal further includes a cone support 181 assembly 180 , which is disposed inside the nylon ring 120 and the tail pipe 130 . The cone support 181 assembly 180 abuts against the bottom of the stress cone 170 and is connected to the epoxy sleeve 110 .

[0065] For example, the cone support 181 assembly 180 can abut against the bottom of the stress cone 170 on one hand, and can be fixedly connected to the epoxy sleeve 110 on the other hand, which can effectively fix the stress cone 170 in the lumen of the epoxy sleeve 110 .

[0066] As a specific implementation method, Figure 2 As shown, the cone support 181 assembly 180 includes: a cone support 181, a support rod 182, an elastic member 183, a flange 184, a connecting rod 185 and a fastening nut 186.

[0067] Among them, a plurality of first mounting holes and a plurality of second mounting holes are provided on the flange 184. The plurality of first mounting holes are arranged in sequence at intervals along the circumferential direction of the flange 184, and the plurality of second mounting holes are arranged in sequence at intervals along the circumferential direction of the flange 184. In the radial direction of the flange 184, the second mounting holes are located on the outside of the first mounting holes.

[0068] The top of cone support 181 can be inserted into the lumen of epoxy sleeve 110, and cone support 181 can abut against stress cone 170 via the inclined surface. The bottom of cone support 181 is provided with multiple threaded holes, which correspond to the positions of the first mounting holes. The top of support rod 182 is provided with external threads, and the top of support rod 182 can be threadedly connected to the threaded hole at the bottom of cone support 181. The bottom of support rod 182 can be movably inserted into the first mounting hole of flange 184.

[0069] The elastic member 183 may be a spring, and the elastic member 183 may be sleeved on the support rod 182 .

[0070] The bottom end of epoxy sleeve 110 is provided with multiple threaded holes, which correspond to the positions of the second mounting holes. The top end of connecting rod 185 is provided with external threads, which can be threadedly connected to the threaded holes at the bottom end of epoxy sleeve 110. The bottom end of connecting rod 185 can be inserted into the second mounting hole of flange 184. Furthermore, the bottom end of connecting rod 185 is also provided with external threads, and fastening nut 186 can be threadedly connected to the external threads at the bottom end of connecting rod 185.

[0071] During actual installation, Figure 2 As shown, multiple support rods 182 can be threadedly connected to the bottom end of the cone support 181, and at the same time, multiple connecting rods 185 are threadedly connected to the epoxy sleeve 110; the cone support 181 is inserted into the tubular cavity of the epoxy sleeve 110, and the cone support 181 can abut against the pressure cone; multiple elastic members 183 are correspondingly sleeved on the support rods 182; multiple support rods 182 and multiple connecting rods 185 are correspondingly inserted into multiple first mounting holes and multiple second mounting holes respectively; multiple fastening nuts 186 are threadedly connected to the bottom ends of the connecting rods 185, and the position of the fastening nuts 186 on the connecting rods 185 needs to be adjusted so that the elastic members 183 are in a compressed state.

[0072] Therefore, through the above installation method, the elastic member 183 can be used to effectively position the cone holder 181 to ensure that the cone holder 181 can always abut against the pressure cone, so that the pressure cone is kept in the lumen of the epoxy sleeve 110.

[0073] In addition, the support rod 182 and the connecting rod 185 can also be connected to a ground wire.

[0074] Further, in one embodiment, Figure 1 As shown, the GIS terminal further includes a stop sleeve 310 and an insertion rod 320 .

[0075] The stop sleeve 310 is arranged inside the epoxy sleeve 110 and can be sleeved on the outer periphery of the cable 210 ; the plug rod 320 is arranged inside the epoxy sleeve 110 and is connected to the end of the cable 210 .

[0076] For example, in this embodiment, both the stop sleeve 310 and the insertion rod 320 are disposed at the top of the pressure cone. The stop sleeve 310 is sleeved around the outer circumference of the cable 210 with an interference fit. The insertion rod 320 is made of a conductive metal material and is connected to the conductive portion of the end of the cable 210. After the cable 210 is inserted into the lumen of the epoxy sleeve 110, the stop sleeve 310 effectively secures the cable 210. The cable 210 can then be electrically connected to other conductive components, such as a connector, via the insertion rod 320.

[0077] Furthermore, in one embodiment, in order to improve the sealing effect, as Figure 1 As shown, the GIS terminal further includes a heat shrink tube 330 , which is disposed on a side of the tail tube 130 away from the nylon ring 120 . The heat shrink tube 330 is at least partially sleeved on the outer periphery of the tail tube 130 , and can be sleeved on the outer periphery of the cable 210 .

[0078] For example, the heat shrink tube 330 may be made of a thermoplastic material that can be elastically deformed and shrunk after being heated.

[0079] During actual installation, the heat shrink tube 330 can be first put on the outer periphery of the cable 210. After the cable 210 is inserted into the epoxy sleeve 110, the heat shrink tube 330 is moved so that the heat shrink tube 330 is partially put on the outer periphery of the tail tube 130, and the remaining part is put on the cable 210. Then, the heat shrink tube 330 is heated by a heat source so that the heat shrink tube 330 can shrink due to the heat and fit on the tail tube 130 and the cable 210 at the same time.

[0080] In addition, in order to further improve the sealing effect, such as Figure 1 As shown, lead plating 340 may be performed on the connection positions among the tail tube 130 , the heat shrink tube 330 and the cable 210 .

[0081] The GIS terminal in this embodiment can be installed in the following ways:

[0082] 1. Put the tail pipe 130, nylon ring 120 and cone support 181 assembly 180 on the cable 210 in the installation order;

[0083] 2. Cut the outer layer of the cable 210 according to the installation process;

[0084] 3. Fit the stress cone 170 onto the treated cable 210;

[0085] 4. Insert the stop sleeve 310 into the head of the processed cable 210;

[0086] 5. Press the plug rod 320 onto the head of the cable 210;

[0087] 6. Slowly insert the crimped cable 210 into the lumen of the epoxy sleeve 110 until the cable 210 is in place;

[0088] 7. Install the cone support 181 assembly 180 so that the cone support 181 assembly 180 abuts against the pressure cone and is connected to the epoxy sleeve 110;

[0089] 8. Install the nylon ring 120 and fix it to the bottom end of the epoxy sleeve 110 using the first bolt 161;

[0090] 9. Install the tail tube 130 and fix the tail tube 130 to the bottom end of the nylon ring 120 using the second bolt 162. Then, lead-line the tail tube 130 340 and seal it. Then, put the heat shrink tube 330 on the tail tube 130 and the cable 210 at the same time.

[0091] At this point, the installation is complete.

[0092] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A GIS terminal, characterized in that: include: An epoxy sleeve having a lumen into which an external cable can be plugged; A nylon ring, which is arranged at the bottom end of the epoxy sleeve and located at the periphery of the lumen. The nylon ring can be arranged at the periphery of the cable; The tail tube is connected to a side of the nylon ring away from the epoxy sleeve. The tail tube can be sleeved on the outer periphery of the cable and can be connected to the cable.

2. The GIS terminal according to claim 1, characterized in that: It also includes a first sealing ring and a second sealing ring, wherein the first sealing ring is arranged between the epoxy sleeve and the nylon ring, and the second sealing ring is arranged between the nylon ring and the tail pipe.

3. The GIS terminal according to claim 2, characterized in that: A first sealing groove is provided on the top end surface of the nylon ring abutting against the epoxy sleeve, and the first sealing ring is provided in the first sealing groove.

4. The GIS terminal according to claim 2, characterized in that: A second sealing groove is provided on the top end surface of the tail pipe abutting against the nylon ring, and the second sealing ring is provided in the second sealing groove.

5. The GIS terminal according to claim 1, characterized in that: Also includes: A first bolt, wherein the nylon ring is provided with a countersunk hole penetrating along the thickness direction thereof, and the end surface of the epoxy sleeve abutting against the nylon ring is provided with a first threaded hole corresponding to the position of the countersunk hole, and the first bolt passes through the countersunk hole and is threadedly connected to the first threaded hole of the epoxy sleeve; The second bolt is provided with a through hole penetrating along the thickness direction thereof, and the end surface of the nylon ring abutting against the tail pipe is provided with a second threaded hole corresponding to the position of the through hole. The second bolt passes through the through hole and is threadedly connected to the second threaded hole of the nylon ring.

6. The GIS terminal according to claim 5, characterized in that: There are multiple countersunk holes, which are sequentially spaced apart along the circumferential direction of the nylon ring; there are multiple through holes, which are sequentially spaced apart along the circumferential direction of the tail pipe.

7. The GIS terminal according to claim 1, characterized in that: Also includes: A stress cone is provided inside the epoxy sleeve and can be sleeved on the outer circumference of the cable.

8. The GIS terminal according to claim 7, characterized in that: Also includes: A cone support assembly is provided inside the nylon ring and the tail pipe, the cone support assembly abuts against the bottom of the stress cone and is connected to the epoxy sleeve.

9. The GIS terminal according to claim 1, characterized in that: Also includes: A stop sleeve, the stop sleeve is arranged inside the epoxy sleeve, and the stop sleeve can be sleeved on the outer circumference of the cable; A plugging rod is arranged inside the epoxy sleeve and can be connected to the end of the cable.

10. The GIS terminal according to claim 1, characterized in that: Also includes: A heat shrink tube is provided on a side of the tail tube away from the nylon ring, the heat shrink tube is at least partially sleeved on the outer periphery of the tail tube, and the heat shrink tube can be sleeved on the outer periphery of the cable.

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