Totally-enclosed combined electrical equipment

Abstract

The invention belongs to the field of high-voltage switches, and particularly relates to totally-enclosed combined electrical equipment. In order to solve the technical problems that in the prior art, combined electrical equipment is difficult to overhaul and disassemble, and the overhaul time is too long, the totally-enclosed combined electrical equipment comprises a lightning arrester and a connecting mechanism used for connecting the lightning arrester with a gap, and the connecting mechanism comprises a hollow shell and a conductor located in the shell; the lightning arrester is horizontally arranged on the side of the shell, a horizontal insulator is arranged on the upper portion of the shell, a vertical insulator is arranged on the side of the shell, the horizontally-arranged insulator is provided with a first static contact used for being electrically connected with an interval above, and the vertically-arranged insulator is provided with a second static contact used for being electrically connected with the lightning arrester. The first static contact and the second static contact are electrically connected through a conductor. According to the invention, the operation and maintenance height of the lightning arrester and the connection structure can be effectively reduced, and the technical effects of facilitating maintenance and disassembly and shortening the maintenance time are achieved.

Description

Technical Field

[0001] The invention belongs to the field of high voltage switches, and in particular relates to a fully enclosed combined electrical equipment. Background Art

[0002] Totally enclosed combined electrical equipment refers to equipment that seals the high-voltage live parts of components such as disconnectors, earthing switches, circuit breakers, current transformers, voltage transformers, lightning arresters, cable terminals, etc. in a grounded metal casing, in which the metal casing is filled with SF6 gas with good insulating properties.

[0003] Combined electrical equipment is widely used in power systems due to its advantages such as small footprint, small size, high reliability, and almost no maintenance. Since combined electrical equipment needs to be miniaturized, the spacing between them is getting smaller and smaller. When dual components are arranged, the spacing structure is getting higher and higher. In order to meet the requirements of small spacing, many manufacturers have greatly reduced the spacing between them, making the components higher and higher, which ultimately leads to difficulties in operation and maintenance. For example, the spacing of standard 110kV combined electrical equipment has been generally reduced from more than 1500mm to 1000mm, and the height has been increased from 3m to 4m. Due to the high structure of combined electrical equipment and the fact that lightning arresters are generally arranged at a high position in the prior art, combined electrical equipment generally has the problem of difficulty in maintenance and disassembly, and the maintenance time is too long, wasting a lot of manpower and material resources. Summary of the invention

[0004] The object of the present invention is to provide a fully enclosed combined electrical equipment to solve the technical problems in the prior art that the combined electrical equipment is difficult to repair and disassemble and the repair time is too long.

[0005] To achieve the above-mentioned purpose, the technical solution of the fully enclosed combined electrical equipment provided by the present invention is:

[0006] A fully enclosed combined electrical device includes a lightning arrester and a connecting mechanism for connecting the lightning arrester to a gap, the connecting structure includes a hollow shell and a conductor located in the shell, the lightning arrester is horizontally arranged on the side of the shell, a horizontal insulator is provided on the upper part of the shell, a vertical insulator is provided on the side of the shell, a first static contact for electrically connecting to the gap above is provided on the horizontally arranged insulator, a second static contact for electrically connecting to the lightning arrester is provided on the vertically arranged insulator, and the first static contact and the second static contact are electrically connected through a conductor.

[0007] The beneficial effects are as follows: the present invention is an improved invention. The height of the arrester when it is set vertically is much greater than the height of the arrester when it is set horizontally. By setting the arrester horizontally at the bottom of the fully enclosed combined electrical equipment, the height of the fully enclosed combined electrical equipment and the height of the arrester can be effectively reduced. At the same time, the connection structure can be moved downward to reduce the height of the connection structure, ultimately achieving the technical effect of reducing the operation and maintenance height, facilitating maintenance and disassembly, and shortening the maintenance time.

[0008] Furthermore, the shell is an inverted "T"-shaped shell.

[0009] The beneficial effect is that the inverted "T"-shaped shell can be expanded and connected to other equipment on the basis of the connection mechanism connecting the interval and the lightning arrester.

[0010] Furthermore, a vertical insulator and a third static contact arranged on the insulator for electrical connection with other equipment are also provided on the side of the shell opposite to the lightning arrester.

[0011] The beneficial effect is that by providing the third static contact, other devices can be easily connected.

[0012] Furthermore, the conductor is detachably connected to the first stationary contact and the second stationary contact.

[0013] The beneficial effect is that by arranging the conductor and the first stationary contact and the second stationary contact in a detachable connection, the conductor can be removed for maintenance during maintenance, which facilitates the maintenance of the conductor.

[0014] Furthermore, the conductor includes a first conductor having one end electrically connected to the first stationary contact and a second conductor having one end electrically connected to the second stationary contact, and the first conductor and the second conductor are detachably connected.

[0015] The beneficial effect is that by making the first conductor and the second conductor detachably connected, the conductors can be disassembled in sections, which reduces the difficulty of disassembling the conductors and facilitates the inspection and disassembly of the conductors.

[0016] Furthermore, it also includes an adapter, through which the first conductor and the second conductor are detachably connected.

[0017] The beneficial effect is that by providing the adapter, the detachable connection between the first conductor and the second conductor can be conveniently achieved.

[0018] Furthermore, the conductor includes a first conductor electrically connected to the first stationary contact and a third conductor whose two ends are electrically connected to the second stationary contact and the third stationary contact respectively. A sleeve is provided at one end of the first conductor away from the first stationary contact, and the third conductor is detachably connected to the first conductor through the sleeve.

[0019] The beneficial effect is that the first conductor and the third conductor can be conveniently and detachably connected through the sleeve, and at the same time, the connecting device can be electrically connected to other components by replacing the second conductor with the third conductor.

[0020] Furthermore, it also includes a voltage transformer, which is electrically connected to the third static contact.

[0021] The beneficial effect is that the voltage transformer is electrically connected to the third static contact, and the busbar can be connected through the voltage transformer to expand the fully enclosed combined equipment.

[0022] Furthermore, the insulator is provided with a connecting sleeve for detachably connecting with the conductor.

[0023] The beneficial effect is that the conductor can be quickly installed and removed through the connecting sleeve, which is convenient for maintenance.

[0024] Furthermore, a cover plate is detachably mounted on the shell.

[0025] The beneficial effect is that the conductor can be easily removed by opening the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a fully enclosed combined electrical equipment in the prior art;

[0027] Figure 2 It is a schematic diagram of the fully enclosed combined electrical equipment of the present invention;

[0028] Figure 3 for Figure 2 A partial enlarged view of part A;

[0029] Figure 4 It is a cross-sectional view of the connection structure of the fully enclosed combined electrical equipment of the present invention when two phases are connected;

[0030] Figure 5 It is a cross-sectional view of the connection structure of the fully enclosed combined electrical equipment in the present invention when three phases are connected.

[0031] In the figure:

[0032] 1. Lightning arrester; 2. Insulator; 31. First static contact; 32. Second static contact; 33. Third static contact; 4. Removable conductor; 41. First conductor; 42. Second conductor; 43. Third conductor; 5. Three-phase adapter; 6. Cover plate; 7. Connecting bushing; 8. Four-phase connecting bushing; 9. Current transformer; 10. Circuit breaker; 11. Three-phase connecting bushing; 12. Elbow connecting bushing. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with embodiments.

[0034] Specific embodiment 1 of the fully enclosed combined electrical equipment provided by the present invention:

[0035] like Figure 2-5 As shown, this specific embodiment 1 proposes a fully enclosed combined electrical equipment, including a horizontally arranged lightning arrester 1 and a gap, a connecting structure is provided between the lightning arrester 1 and the gap, the connecting structure includes a hollow shell and a conductor located in the shell, a horizontal insulator 2 is provided on the upper part of the shell, a vertical insulator is provided on the side of the shell, a first static contact 31 for electrically connecting to the upper gap is provided on the horizontally arranged insulator, a second static contact 32 for electrically connecting to the lightning arrester is provided on the vertically arranged insulator, an insulator and a third static contact 33 arranged on the insulator are also provided on the side of the shell opposite to the second static contact 32, and the first static contact 31 and the second static contact 32 are electrically connected through a conductor.

[0036] Specifically, Figure 1 As shown, in the prior art, the interval includes a circuit breaker 10, a current transformer 9, a four-phase connecting bushing 8 and a three-phase connecting bushing 11. The circuit breaker 10 is arranged vertically, and the break of the current transformer 9 is arranged horizontally. The circuit breaker 10 is connected to the current transformer 9, and the end of the current transformer 9 away from the circuit breaker 10 is connected to the four-phase connecting bushing 8, the upper end of the four-phase connecting bushing 8 is connected to the lower end of the three-phase connecting bushing 11, the upper end of the three-phase connecting bushing 11 is connected to a vertically arranged lightning arrester 1, and the side of the three-phase connecting bushing 11 is connected to other components.

[0037] like Figure 2 As shown, on the basis of the prior art, the present invention arranges the arrester 1 below the four-phase connection bushing 8. Specifically, the circuit breaker 10 is arranged vertically, the current transformer 9 is arranged horizontally, the circuit breaker 10 is connected to the current transformer 9, the end of the current transformer 9 away from the circuit breaker 10 is connected to the four-phase connection bushing 8, the upper end of the four-phase connection bushing 8 is connected to one end of the elbow connection bushing 12, the other end of the elbow connection bushing 12 is connected to other components, the lower end of the four-phase connection bushing 8 is connected to the upper end of the connection structure, and the side of the connection structure is connected to the horizontally arranged arrester 1.

[0038] In this embodiment, since the height of the arrester 1 when it is vertically set is much greater than the height of the arrester 1 when it is horizontally set, the arrester 1 is horizontally set at the bottom of the fully enclosed combined electrical equipment, which can effectively reduce the height of the fully enclosed combined electrical equipment and the height of the arrester 1. At the same time, the connection structure connected to the arrester 1 can be moved downward to reduce the height of the connection structure, and finally achieve the technical effect of facilitating maintenance and disassembly and shortening the maintenance time. Taking the 126KV GIS fully enclosed combined electrical equipment as an example, the operation and maintenance height when the arrester 1 is vertically set at the top of the interval in the manner of the background technology is 4.5m, and the operation and maintenance height when the arrester 1 is horizontally set at the bottom of the fully enclosed combined electrical equipment in the manner of this embodiment is 0.7m. Compared with the background technology, the present invention can effectively reduce the operation and maintenance height, thereby achieving the technical effect of facilitating maintenance and disassembly and shortening the maintenance time.

[0039] Specific embodiment 2 of the fully enclosed combined electrical equipment provided by the present invention:

[0040] The main difference between this specific embodiment 2 and the specific embodiment 1 is that: in this embodiment, a voltage transformer is also included, the third static contact 33 is electrically connected to the voltage transformer, and the first static contact 31, the second static contact 32 and the third static contact 33 are electrically connected through a conductor. Compared with the specific embodiment 1, the voltage transformer is also arranged at the bottom of the fully enclosed combination electrical equipment through a connecting mechanism, which can reduce the operation and maintenance height when repairing the voltage transformer, and can also reduce the operation and maintenance height when repairing the connecting mechanism connected to the voltage transformer, thereby achieving the technical effect of facilitating maintenance and disassembly and shortening the maintenance time. At the same time, the voltage transformer can also be connected to the busbar, thereby realizing the expansion of the fully enclosed combination equipment.

[0041] Specific embodiment 3 of the fully enclosed combined electrical equipment provided by the present invention:

[0042] The main difference between this specific embodiment 3 and the specific embodiment 1 is that in this embodiment, the connection structure includes an inverted "T"-shaped housing and an adapter 5, a cover plate 6 is detachably mounted on the housing, and a connecting sleeve 7 for detachably mounting with a detachable conductor 4 is provided at one end of the stationary contact located inside the housing, and the detachable conductor 4 includes a first conductor 41 electrically connected to the first stationary contact at one end and a second conductor 42 electrically connected to the second stationary contact at one end, and the first conductor 41 and the second conductor 42 are detachably connected through the adapter 5. Compared with the specific embodiment 1, by providing the cover plate 6, the conductor can be easily removed from the adapter 5 and the connecting sleeve 7, achieving the technical effect of facilitating the inspection and disassembly of the conductor and shortening the inspection time.

[0043] Specific embodiment 4 of the fully enclosed combined electrical equipment provided by the present invention:

[0044] The main difference between this specific embodiment 4 and specific embodiment 3 is that: in this embodiment, the conductor includes a first conductor 41 electrically connected to the first static contact and a third conductor 43 whose two ends are electrically connected to the second static contact and the third static contact respectively, and a sleeve is provided at one end of the first conductor away from the first static contact, and the third conductor passes through the sleeve and is detachably connected to the first conductor. Compared with specific embodiment 3, when it is necessary to expand the fully enclosed combination electrical equipment, the second conductor is replaced by the third conductor, and the third static contact is energized, so that the fully enclosed combination electrical equipment can be expanded.

[0045] Specific embodiment 5 of the fully enclosed combined electrical equipment provided by the present invention:

[0046] The main difference between this specific embodiment 5 and specific embodiment 3 is that in this embodiment, a bolt hole is provided at one end of the stationary contact located inside the housing, and the conductor is detachably connected to the stationary contact through bolts. Compared with specific embodiment 3, this embodiment is more troublesome to disassemble, but it is more reliable to fasten by bolts.

[0047] Specific embodiment 6 of the fully enclosed combined electrical equipment provided by the present invention:

[0048] The main difference between the specific embodiment 6 and the specific embodiment 3 is that in the present embodiment, the housing is an "L"-shaped housing and does not include the third static contact 33. Compared with the specific embodiment 3, although the "L"-shaped housing cannot expand the combined electrical equipment, it can reduce the volume of the connection structure and reduce the occupied space.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fully enclosed combined electrical equipment, comprising a lightning arrester and a connecting mechanism for connecting the lightning arrester and a partition, characterized in that: The connection structure includes a hollow shell and a conductor located in the shell. The lightning arrester is horizontally arranged on the side of the shell. A horizontal insulator is provided on the upper part of the shell, and a vertical insulator is provided on the side of the shell. The horizontally arranged insulator is provided with a first static contact for electrically connecting to the upper spacer, and the vertically arranged insulator is provided with a second static contact for electrically connecting to the lightning arrester. The first static contact and the second static contact are electrically connected through a conductor.

2. The fully enclosed combined electrical equipment according to claim 1, characterized in that: The shell is an inverted "T" shaped shell.

3. The fully enclosed combined electrical equipment according to claim 1 or 2, characterized in that: A vertical insulator and a third static contact arranged on the insulator for electrical connection with other equipment are also provided on the side of the shell opposite to the lightning arrester.

4. The fully enclosed combined electrical equipment according to claim 3, characterized in that: The conductor is detachably connected to the first stationary contact and the second stationary contact.

5. The fully enclosed combined electrical equipment according to claim 4, characterized in that: The conductor comprises a first conductor having one end electrically connected to the first stationary contact and a second conductor having one end electrically connected to the second stationary contact, and the first conductor and the second conductor are detachably connected.

6. The fully enclosed combined electrical equipment according to claim 5, characterized in that: The invention also includes a transition joint, through which the first conductor and the second conductor are detachably connected.

7. The fully enclosed combined electrical equipment according to claim 4, characterized in that: The conductor includes a first conductor electrically connected to the first stationary contact and a third conductor whose two ends are electrically connected to the second stationary contact and the third stationary contact respectively. A sleeve is provided at one end of the first conductor away from the first stationary contact, and the third conductor passes through the sleeve and is detachably connected to the first conductor.

8. The fully enclosed combined electrical equipment according to claim 3, characterized in that: It also includes a voltage transformer, which is electrically connected to the third static contact.

9. A fully enclosed combined electrical equipment as claimed in any one of claims 4 to 7, characterized in that: The insulator is provided with a connecting sleeve for detachably connecting with the conductor.

10. The fully enclosed combined electrical equipment according to any one of claims 5 to 7, characterized in that: A cover plate is detachably mounted on the shell.

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