GIS cable terminal using clean air as insulating medium

Abstract

The utility model discloses a GIS cable terminal taking clean air as an insulating medium, which comprises a main body assembly, a bottom plate, a pipeline, a control box, an incoming and outgoing line sleeve and a voltage transformer, the pipeline is fixed at the top of the bottom plate, the control box is arranged at the top of the bottom plate, the incoming and outgoing line sleeve is arranged on the pipeline, and the voltage transformer is arranged on the pipeline. The voltage transformer is located at the top of the pipeline; and the connecting assembly is arranged at the top of the pipeline and comprises a connecting piece, a locking piece, a rotating piece, a sealing piece and a limiting piece, and the connecting piece is arranged at the bottom of the voltage transformer. Compared with the prior art, the voltage transformer has the advantages that the voltage transformer is connected and fixed through the connecting assembly, operation is convenient and fast in the mounting and dismounting process, the maintenance efficiency of the voltage transformer can be improved, the sealing performance of the voltage transformer can be improved after mounting is completed, and then the situation of gas leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable terminals, in particular to a GIS cable terminal using clean air as an insulating medium. Background Art

[0002] GIS cable terminal (gas-insulated metal-enclosed switchgear) with clean air as insulating medium is a terminal device used to connect cables and GIS equipment. In this design, the terminal equipment uses clean air as insulating medium. The gas-insulated metal-enclosed switchgear includes circuit breakers, disconnectors, voltage transformers, current transformers, lightning arresters, inlet and outlet bushings, etc. Among them, the voltage transformer is used to measure the bus voltage, monitor the voltage situation in the power grid, and provide data support for system operation. Under harsh environmental conditions, high dust, high humidity or chemical corrosion, dust, corrosion or pollution will accumulate on the surface of the voltage transformer, affecting its normal operation. In this case, it may be necessary to regularly disassemble, clean and maintain the voltage transformer. In the prior art, the voltage transformer is mostly fixed by multiple bolts when fixed, which results in a lot of time during the installation and disassembly process, which causes inconvenience to the maintenance of the voltage transformer. When fixed, if the bolts are not tightened in place or the fixing force is uneven, there will be gas leakage. If leakage occurs, it will cause water or moisture to enter the electrical equipment, thereby increasing the risk of electrical accidents and may even cause fire or explosion. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above problems and / or the existing problems in the existing GIS cable terminals using clean air as the insulating medium, the utility model is proposed.

[0005] Therefore, the problem to be solved by the utility model is that in the prior art, the voltage transformer is mostly fixed by multiple bolts, which results in a lot of time required during the installation and disassembly process, thereby causing inconvenience to the maintenance of the voltage transformer. Moreover, when fixing, if the bolts are not tightened in place or the fixing force is uneven, gas leakage may occur. If leakage occurs, it will cause water or moisture to enter the electrical equipment, thereby increasing the risk of electrical accidents and may even cause fire or explosion.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a GIS cable terminal using clean air as an insulating medium, comprising a main body assembly, including a base plate, a pipeline, a control box, an inlet and outlet bushings and a voltage transformer, wherein the pipeline is fixed to the top of the base plate, the control box is arranged on the top of the base plate, the inlet and outlet bushings are arranged on the pipeline, and the voltage transformer is located on the top of the pipeline;

[0007] A connecting component is arranged at the top of the pipeline, and includes a connecting piece, a locking piece, a rotating piece, a sealing piece and a limiting piece. The connecting piece is arranged at the bottom of the voltage transformer, the locking piece is located on the outside of the connecting piece, the rotating piece is arranged on the outside of the locking piece, the sealing piece is located inside the connecting piece, and the limiting piece is located at the bottom of the rotating piece.

[0008] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the connecting piece includes a connecting sleeve and a connecting pipe, the connecting sleeve is fixed to the top of the pipeline, the connecting pipe is fixed to the bottom of the voltage transformer, and the connecting pipe is inserted into the connecting sleeve.

[0009] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the locking piece includes a locking block, a slot is provided on the connecting sleeve, the locking block is located in the slot, and a card slot is provided on the connecting pipe, and the locking block is engaged with the card slot.

[0010] As a preferred solution of the GIS cable terminal using clean air as the insulating medium of the utility model, the bottoms on both sides of the locking block are inclined.

[0011] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the rotating part includes an extrusion sleeve and a rotating sleeve, the extrusion sleeve is located outside the locking block, and the rotating sleeve is threadedly connected to the outside of the extrusion sleeve.

[0012] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the rotating part also includes a slider, the slider is fixed to one side of the extrusion sleeve, the connecting sleeve is provided with a slide groove, and the slider slides in the slide groove.

[0013] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the rotating part also includes an annular block, the annular block is fixed to the inner side of the rotating sleeve, the connecting sleeve is provided with an annular groove, and the annular block is movably connected to the annular groove.

[0014] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the sealing member includes a fixed frame, an extrusion block, a sealing sleeve and a push plate, the fixed frame is fixed in the connecting sleeve, the extrusion block is located in the fixed frame, the sealing sleeve is fixed in the fixed frame, and the push plate is fixed to the bottom of the connecting pipe.

[0015] As a preferred solution of the GIS cable terminal with clean air as the insulating medium described in the utility model, the limiting member includes a supporting frame and a limiting block, the supporting frame is fixed to one side of the connecting sleeve, the limiting block is located in the supporting frame, and a limiting groove is provided at the bottom of the rotating sleeve, and the limiting block is engaged with the limiting groove.

[0016] As a preferred solution of the GIS cable terminal using clean air as the insulating medium of the utility model, the limiting member further comprises a spring, and two ends of the spring are respectively fixed to the inner wall of the support frame and the limiting block.

[0017] The beneficial effects of the utility model are as follows: through the setting of the connecting component, it is used to connect and fix the voltage transformer, and the operation is more convenient during the installation and disassembly process, thereby improving the maintenance efficiency of the voltage transformer. After the installation is completed, its sealing can be increased, thereby avoiding gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is the overall structure diagram of the GIS cable terminal using clean air as the insulating medium.

[0020] Figure 2 This is a structural diagram of the connection components of a GIS cable terminal using clean air as the insulating medium.

[0021] Figure 3 This is a cross-sectional structural diagram of the connector of a GIS cable terminal using clean air as the insulating medium.

[0022] Figure 4 For GIS cable terminals with clean air as insulation medium Figure 3 A partial enlarged structural diagram in the middle.

[0023] Figure 5This is a cross-sectional structural diagram of the fixed frame of a GIS cable terminal using clean air as the insulating medium.

[0024] Figure 6 This is a cross-sectional structural diagram of the rotating sleeve of a GIS cable terminal using clean air as the insulating medium.

[0025] Figure 7 For GIS cable terminals with clean air as insulation medium Figure 6 A partial enlarged structural diagram of point B in the middle. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figure 1-Figure 7 , which is the first embodiment of the utility model, and this embodiment provides a GIS cable terminal using clean air as an insulating medium. The GIS cable terminal using clean air as an insulating medium includes a main body component 100 and a connection component 200. The connection component 200 can facilitate the installation and disassembly of the voltage transformer 105.

[0031] Specifically, the main component 100 includes a base plate 101, a pipe 102, a control box 103, an inlet and outlet bushing 104 and a voltage transformer 105. The pipe 102 is fixed to the top of the base plate 101, the control box 103 is arranged on the top of the base plate 101, the inlet and outlet bushing 104 is arranged on the pipe 102, and the voltage transformer 105 is located at the top of the pipe 102.

[0032] Circuit breakers, isolating switches, current transformers, lightning arresters and other components are respectively arranged at different positions on the pipeline 102. The control box 103 is used to control the data parameters of the equipment. The inlet and outlet bushings 104 are used to connect the cables. The voltage transformer 105 is used to measure the bus voltage and monitor the voltage conditions in the power grid. This is the prior art and will not be elaborated in this solution. Those skilled in the art can clearly understand the working principle.

[0033] Specifically, the connecting component 200 is arranged at the top of the pipeline 102, and includes a connecting member 201, a locking member 202, a rotating member 203, a sealing member 204 and a limiting member 205. The connecting member 201 is arranged at the bottom of the voltage transformer 105, the locking member 202 is located on the outside of the connecting member 201, the rotating member 203 is arranged on the outside of the locking member 202, the sealing member 204 is located inside the connecting member 201, and the limiting member 205 is located at the bottom of the rotating member 203.

[0034] The connection piece 201 is used to preliminarily connect the voltage transformer 105 to the pipeline 102, and then the rotating piece 203 is rotated to drive the locking piece 202 to move, so that the locking piece 202 locks and fixes the voltage transformer 105, thereby completing the installation of the voltage transformer 105. When the voltage transformer 105 needs to be disassembled, the voltage transformer 105 can be disassembled by simply rotating the rotating piece 203 in the opposite direction, thereby making the installation and disassembly of the voltage transformer 105 more convenient. In order to improve the maintenance efficiency of the voltage transformer 105, when the locking part 202 completes the fixation of the voltage transformer 105, the sealing shape of the voltage transformer 105 when connected is increased by the sealing part 204, so as to avoid gas leakage during use. The setting of the limiter 205 is used to limit the rotating part 203, so as to avoid external force accidentally touching the rotating part 203 after the voltage transformer 105 is installed, thereby causing the fixation of the voltage transformer 105 to loosen.

[0035] Example 2

[0036] Reference Figure 1-Figure 7 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0037] Specifically, the connector 201 includes a connecting sleeve 201a and a connecting pipe 201b. The connecting sleeve 201a is fixed to the top of the pipeline 102, and the connecting pipe 201b is fixed to the bottom of the voltage transformer 105. The connecting pipe 201b is inserted into the connecting sleeve 201a.

[0038] When the connecting pipe 201b is inserted into the connecting sleeve 201a, the voltage transformer 105 and the pipeline 102 can be preliminarily connected.

[0039] Specifically, the locking member 202 includes a locking block 202a. The connecting sleeve 201a is provided with a slot 201a-1. The locking block 202a is located in the slot 201a-1. The connecting tube 201b is provided with a slot 201b-1. The locking block 202a is engaged with the slot 201b-1.

[0040] There are two locking blocks 202a, which are located on both sides of the connecting sleeve 201a. When the locking block 202a moves into the slot 201b-1, its inclined surface will squeeze the inner wall of the slot 201b-1, thereby pushing the connecting tube 201b to move downward, so that the voltage transformer 105 can be installed more securely. When the locking block 202a is engaged with the slot 201b-1, the connecting tube 201b can be locked through the cooperation of the two, so that the connecting tube 201b cannot be separated from the connecting sleeve 201a, thereby completing the fixation of the voltage transformer 105.

[0041] Specifically, the bottoms of both sides of the locking block 202a are inclined.

[0042] Specifically, the rotating member 203 includes an extrusion sleeve 203a and a rotating sleeve 203b. The extrusion sleeve 203a is located outside the locking block 202a, and the rotating sleeve 203b is threadedly connected to the outside of the extrusion sleeve 203a.

[0043] The top of the squeezing sleeve 203a contacts the inclined surface of one side of the locking block 202a. When the rotating sleeve 203b rotates, it drives the squeezing sleeve 203a to move upward and squeeze the inclined surface of the locking block 202a, thereby pushing the locking block 202a to move and engage with the slot 201b-1.

[0044] Specifically, the rotating member 203 further includes a slider 203c, which is fixed to one side of the extrusion sleeve 203a. A slide groove 201a-2 is provided on the connecting sleeve 201a, and the slider 203c slides in the slide groove 201a-2.

[0045] The cooperation between the slider 203c and the slide groove 201a-2 is used to limit the extrusion sleeve 203a to prevent the extrusion sleeve 203a from rotating when moving.

[0046] Example 3

[0047] Reference Figure 1-Figure 7 , which is the third embodiment of the utility model, and this embodiment is based on the first two embodiments.

[0048] Specifically, the rotating member 203 further includes an annular block 203d, which is fixed to the inner side of the rotating sleeve 203b. An annular groove 201a-3 is provided on the connecting sleeve 201a, and the annular block 203d is movably connected to the annular groove 201a-3.

[0049] The rotating sleeve 203b is rotationally connected to the connecting sleeve 201a through the cooperation between the annular block 203d and the annular groove 201a-3.

[0050] Specifically, the seal 204 includes a fixed frame 204a, an extrusion block 204b, a sealing sleeve 204c and a push plate 204d. The fixed frame 204a is fixed in the connecting sleeve 201a, the extrusion block 204b is located in the fixed frame 204a, the sealing sleeve 204c is fixed in the fixed frame 204a, and the push plate 204d is fixed to the bottom of the connecting pipe 201b.

[0051] The extrusion blocks 204b are arc-shaped, there are four of them, which are evenly distributed in a ring shape in the fixed frame 204a. One side of the extrusion block 204b is inclined. The number of push plates 204d corresponds to the extrusion block 204b. A step is provided on the connecting tube 201b. The fixed frame 204a is in contact with the inner wall of the step and is sleeved on the outside of the connecting tube 201b.

[0052] When the connecting pipe 201b moves downward, it will drive the push plate 204d to squeeze the inclined surface of the squeezing block 204b, so that the squeezing block 204b can move, so that the squeezing block 204b can squeeze the sealing sleeve 204c, and the sealing sleeve 204c can be in close contact with the connecting pipe 201b. At this time, the space between the connecting pipe 201b and the connecting sleeve 201a is greatly reduced, thereby increasing the sealing performance of the voltage transformer 105 after installation, thereby avoiding gas leakage during use.

[0053] Specifically, the limiting member 205 includes a support frame 205a and a limiting block 205b. The support frame 205a is fixed to one side of the connecting sleeve 201a. The limiting block 205b is located in the support frame 205a. A limiting groove 203b-1 is provided at the bottom of the rotating sleeve 203b, and the limiting block 205b is engaged with the limiting groove 203b-1.

[0054] One side of the limit block 205b is inclined, and there are multiple limit grooves 203b-1, which are evenly distributed in a ring shape at the bottom of the rotating sleeve 203b. The limit block 205b cooperates with the limit groove 203b-1 to limit the rotating sleeve 203b, so that the rotating sleeve 203b can only rotate when it drives the extrusion sleeve 203a to move upward, and cannot rotate in the opposite direction. This prevents the rotating sleeve 203b from being accidentally touched by external force during use, causing the fixation of the voltage transformer 105 to loosen.

[0055] There is a pull rod at the bottom of the limit block 205b, which extends to the outside of the support frame 205a. When the rotating sleeve 203b needs to be rotated in the opposite direction, it is only necessary to pull the pull rod downward so that the limit block 205b is separated from the limit groove 203b-1.

[0056] Specifically, the limiting member 205 further includes a spring 205c, and two ends of the spring 205c are respectively fixed to the inner wall of the supporting frame 205a and the limiting block 205b.

[0057] The spring 205c applies a thrust to the limit block 205b, so that the limit block 205b and the limit groove 203b-1 are more tightly engaged.

[0058] During use, when the voltage transformer 105 is connected to the pipeline 102, the connecting pipe 201b is inserted into the connecting sleeve 201a, and then the rotating sleeve 203b is rotated to drive the extrusion sleeve 203a to move upward, and the extrusion sleeve 203a squeezes the inclined surface of the locking block 202a, thereby pushing the locking block 202a to move. When the locking block 202a moves into the slot 201b-1, its inclined surface squeezes the inner wall of the slot 201b-1, thereby pushing the connecting pipe 201b to move downward, so that the voltage transformer 105 can be installed more securely. When the locking block 202a is engaged with the slot 201b-1, the connecting pipe 201b can be locked through the cooperation of the two, so that the connecting pipe 201b cannot be separated from the connecting sleeve 201a, thereby completing the fixation of the voltage transformer 105.

[0059] At the same time, when the connecting pipe 201b moves downward, it will drive the push plate 204d to squeeze the inclined surface of the extrusion block 204b, so that the extrusion block 204b can move, so that the extrusion block 204b can squeeze the sealing sleeve 204c, and make the sealing sleeve 204c closely contact with the connecting pipe 201b. At this time, the space between the connecting pipe 201b and the connecting sleeve 201a is greatly reduced, thereby increasing the sealing performance of the voltage transformer 105 after installation, thereby avoiding gas leakage during use.

[0060] When the voltage transformer 105 needs to be disassembled and maintained, the pull rod is pulled downward so that the pull rod drives the limit block 205b to separate from the limit groove 203b-1, thereby releasing the restriction on the rotating sleeve 203b. Then, the rotating sleeve 203b is rotated in the opposite direction to drive the extrusion sleeve 203a to move downward, so that the extrusion sleeve 203a is separated from the locking block 202a. At this time, the voltage transformer 105 can be moved upward and the connecting pipe 201b can be separated from the connecting sleeve 201a. This makes the installation and disassembly of the voltage transformer 105 more convenient, thereby improving the maintenance efficiency of the voltage transformer 105.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A GIS cable terminal using clean air as an insulating medium, characterized in that: include, A main body component (100) comprises a base plate (101), a pipeline (102), a control box (103), an inlet and outlet bushing (104) and a voltage transformer (105), wherein the pipeline (102) is fixed to the top of the base plate (101), the control box (103) is arranged on the top of the base plate (101), the inlet and outlet bushing (104) is arranged on the pipeline (102), and the voltage transformer (105) is located on the top of the pipeline (102); A connecting component (200) is arranged at the top of the pipeline (102), comprising a connecting member (201), a locking member (202), a rotating member (203), a sealing member (204) and a limiting member (205); the connecting member (201) is arranged at the bottom of the voltage transformer (105); the locking member (202) is located outside the connecting member (201); the rotating member (203) is arranged outside the locking member (202); the sealing member (204) is located inside the connecting member (201); and the limiting member (205) is located at the bottom of the rotating member (203).

2. The GIS cable terminal with clean air as the insulating medium as claimed in claim 1, characterized in that: The connecting piece (201) comprises a connecting sleeve (201a) and a connecting pipe (201b), wherein the connecting sleeve (201a) is fixed to the top of the pipeline (102), the connecting pipe (201b) is fixed to the bottom of the voltage transformer (105), and the connecting pipe (201b) is inserted into the connecting sleeve (201a).

3. The GIS cable terminal with clean air as the insulating medium as claimed in claim 2, characterized in that: The locking member (202) comprises a locking block (202a); a slot (201a-1) is provided on the connecting sleeve (201a); the locking block (202a) is located in the slot (201a-1); a clamping slot (201b-1) is provided on the connecting tube (201b); the locking block (202a) is clamped with the clamping slot (201b-1).

4. The GIS cable terminal with clean air as the insulating medium as claimed in claim 3, characterized in that: The bottoms of both sides of the locking block (202a) are inclined.

5. The GIS cable terminal with clean air as the insulating medium as claimed in claim 3 or 4, characterized in that: The rotating member (203) comprises an extrusion sleeve (203a) and a rotating sleeve (203b), wherein the extrusion sleeve (203a) is located outside the locking block (202a), and the rotating sleeve (203b) is threadedly connected to the outside of the extrusion sleeve (203a).

6. The GIS cable terminal with clean air as the insulating medium as claimed in claim 5, characterized in that: The rotating member (203) further comprises a sliding block (203c), wherein the sliding block (203c) is fixed to one side of the extrusion sleeve (203a), and a sliding groove (201a-2) is provided on the connecting sleeve (201a), and the sliding block (203c) slides in the sliding groove (201a-2).

7. The GIS cable terminal with clean air as the insulating medium as claimed in claim 6, characterized in that: The rotating member (203) further comprises an annular block (203d), wherein the annular block (203d) is fixed to the inner side of the rotating sleeve (203b), an annular groove (201a-3) is provided on the connecting sleeve (201a), and the annular block (203d) is movably connected to the annular groove (201a-3).

8. The GIS cable terminal with clean air as the insulating medium as claimed in claim 6 or 7, characterized in that: The sealing member (204) comprises a fixing frame (204a), an extrusion block (204b), a sealing sleeve (204c) and a push plate (204d); the fixing frame (204a) is fixed in the connecting sleeve (201a); the extrusion block (204b) is located in the fixing frame (204a); the sealing sleeve (204c) is fixed in the fixing frame (204a); and the push plate (204d) is fixed to the bottom of the connecting pipe (201b).

9. The GIS cable terminal with clean air as the insulating medium as claimed in claim 8, characterized in that: The limiting member (205) comprises a support frame (205a) and a limiting block (205b); the support frame (205a) is fixed to one side of the connecting sleeve (201a); the limiting block (205b) is located in the support frame (205a); a limiting groove (203b-1) is provided at the bottom of the rotating sleeve (203b); and the limiting block (205b) is engaged with the limiting groove (203b-1).

10. The GIS cable terminal using clean air as the insulating medium as claimed in claim 9, characterized in that: The limiting member (205) further comprises a spring (205c), and two ends of the spring (205c) are respectively fixed to the inner wall of the support frame (205a) and the limiting block (205b).

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