CN217954622U

CN217954622U - GIS is with insulating pull rod withstand voltage and partial discharge and lightning impulse test frock

Info

Publication number: CN217954622U
Application number: CN202221552269.7U
Authority: CN
Inventors: 盛盈盈; 张西望; 余航; 勾鑫哲; 李龙
Original assignee: Shandong Dachi High Voltage Switchgear Co ltd
Current assignee: Shandong Dachi High Voltage Switchgear Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-12-02
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses a GIS is mainly by withstand voltage equipment, earthing switch, isolator, insulating pull rod housing, connecting bus, basin formula insulator, gas charging valve, density relay, sleeve pipe constitution with insulating pull rod withstand voltage and partial discharge and lightning impulse test frock. Compact structure, insulating pull rod simple to operate, partial discharge test can get rid of the influence of external environment to the experimental data accuracy during experimental, ensure the accuracy of partial discharge experimental data.

Description

GIS is with insulating pull rod withstand voltage and partial discharge and lightning impulse test frock

Technical Field

The utility model relates to a power test equipment technical field, in particular to GIS is with withstand voltage and partial discharge and lightning impulse test frock of insulating pull rod.

Background

The insulating pull rod is one of important parts of the combined electrical apparatus, and a voltage withstand test needs to be carried out on the insulating pull rod before the insulating pull rod is used. During testing, the insulating pull rod needs to be fixedly installed on a special tool. At present, some tools are already available, for example, a chinese utility model patent with publication number CN204008976U discloses a withstand voltage test tool of an insulating pull rod for a combined electrical appliance, which comprises a test cylinder, a conductor seat and an insulator, wherein the test cylinder is vertically arranged, a cover plate is arranged on the upper part of the test cylinder, the insulating pull rod is positioned inside the test cylinder and is also vertically arranged, the upper end of the insulating pull rod is connected to the lower end of a sliding pull rod, two limit grooves are arranged on the sliding pull rod, and limit devices are arranged on the cover plate and at the positions where the sliding pull rod passes through; the lower end of the insulating pull rod is fixedly connected with the conductor, the lower end of the conductor seat is fixedly connected with the insulator, a circle of conductive spring is arranged on the upper end of the conductor seat along the inner wall, the lower portion of the conductor penetrates through the conductive spring and extends into the conductor seat, the lower portion of the insulator is connected with the isolating switch, one side of the isolating switch is connected with the operating mechanism, the other side of the isolating switch is provided with a branch bus, and the branch bus is connected with the experiment table through the transformer. However, when the tool is used, the insulating pull rod for the GIS is voltage-resistant and partial discharge passes through SF ₆ The air sleeve is pressurized, and the partial discharge test is greatly influenced by the external environment. The accuracy of the partial discharge test data cannot be ensured, and the safety and reliability of the GIS equipment in long-term operation are not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a remedy prior art not enough, provide a GIS with insulating pull rod withstand voltage and partial discharge and lightning impulse test frock.

The utility model discloses a realize through following technical scheme:

a GIS is with insulating pull rod withstand voltage and partial discharge and thunder and lightning impulse test frock, including the first insulator used for connecting withstand voltage equipment, the said first insulator is fixedly connected with first switch shell, second insulator, four-way shell, third insulator, second switch shell, fourth insulator, bus-bar shell, fifth insulator, three-way shell (14) sequentially; the three-way shell is provided with a sleeve; install first isolator between first insulator and the second insulator, install first connecting conductor between second insulator and the third insulator, install second isolator between third insulator and the fourth insulator, install the connecting bus between fourth insulator and the fifth insulator, the fifth insulator passes through tee junction conducting rod and bushing, and insulating pull rod fixed subassembly fixed mounting is connected on the cross housing and through second connecting conductor and first connecting conductor electricity.

And the first end of the second connecting conductor is fixedly connected with the first connecting conductor, and the second end of the second connecting conductor is detachably connected with the insulating pull rod fixing component.

The fixed subassembly of insulating pull rod includes that first end and cross-shell can dismantle the insulating pull rod housing of being connected, the second end demountable installation top cap of insulating pull rod housing, the installation of top cap is an upper fixed plate, first connecting component is installed to an upper fixed plate, first connecting component can be dismantled with the first end of insulating pull rod and be connected, the second end of reason pull rod passes through the bolt and can dismantle with the second connecting component of installation on the bottom plate and be connected, the bottom plate is installed on can dismantling the supporting seat of being connected with second connecting conductor.

The supporting seat bottom fixed mounting has the bracing piece, the spliced eye on the second connecting conductor is pegged graft to the bracing piece.

And an inflation valve is arranged on the bus shell.

And a density relay is arranged on the inflation valve.

The utility model has the following technical advantages:

the pressure-resistant and partial discharge test of the utility model is directly connected with the tool for pressurization through the pressure-resistant equipment, thereby eliminating the influence of the external environment on the partial discharge test of the insulating pull rod and ensuring the accuracy of the partial discharge test data, thereby ensuring the safe operation of 252kV GIS equipment; the insulating pull rod fixing assembly is simple in structure and convenient to operate; three experiments of pressure resistance, partial discharge and lightning stroke can be completed through one tool, and the functions are more comprehensive.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial schematic view of a structure at a in fig. 1.

In the figure, 1-voltage-resistant equipment, 2-conducting rods, 3-contact seats, 4-first grounding switches, 5-first isolating switches, 6-four-way shells, 7-insulating pull rod fixing assemblies, 8-insulating pull rods, 9-second grounding switches, 10-bus shells, 11-connecting buses, 12-three-way connecting conducting rods, 13-sleeves, 14-three-way shells, 15-three-way supports, 16-inflation valves, 17-second isolating switches, 18-first connecting conductors, 19-second connecting conductors, 20-top covers, 21-upper fixing plates, 22-first connecting components, 23-second connecting components, 24-lower fixing plates, 25-supporting seats, 26-supporting rods, 27-plug holes and 28-insulating pull rod housings.

Detailed Description

The following are only embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

In the present invention, the words describing the directional relationship such as "front", "back", "inner", "outer" are only used for convenience of description of the embodiment, and are not considered as limitations of the present invention. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The fixed connection mode comprises but is not limited to a connection mode known in the prior art, such as welding, screwing, clamping, interference fit, integral forming and the like; the number of the plurality is more than one.

Fig. 1 to 2 show an embodiment of the present invention. This embodiment provides a GIS is with withstand voltage of insulating pull rod and partial discharge and lightning impulse test frock, including withstand voltage equipment 1, withstand voltage equipment 1 and first insulator, first switch casing, second insulator, four-way housing 6, third insulator, second switch casing, fourth insulator, bus-bar housing 10, fifth insulator, three-way housing 14 pass through bolt fixed connection in proper order.

The second insulator is fixedly installed at the first end of the four-way shell 6, the third insulator is fixedly installed at the third end of the four-way shell 6, the insulating pull rod fixing component 7 for placing the insulating pull rod 8 is installed at the second end of the four-way shell 6, and the fourth end is closed. The fifth insulator is fixedly installed at the first end of the three-way shell 14, the second end of the three-way shell 14 is provided with the sleeve 13, and the third end is closed.

The conducting rod 2 of the voltage-withstanding equipment 1 is inserted into a contact seat 3 arranged at the first end of the first insulator, a first isolating switch 5 is fixedly arranged between the second end of the first insulator and the first end of the second insulator, and a first grounding switch 4 matched with the first isolating switch 5 is arranged on the first switch shell.

The second end of the second insulator is connected with the first end of the third insulator through a first connecting conductor 18, a second isolating switch 17 is fixedly installed between the second end of the third insulator and the first end of the fourth insulator, and a second grounding switch 9 matched with the second isolating switch 17 is installed on the second switch shell; the second end of the fourth insulator is fixedly connected with the first end of the fifth insulator through a connecting bus 11. The second isolating switch 17 and the second grounding switch 9 are positioned in two switch shells, and the connecting bus 11 is positioned in the bus shell 10. The second end of the fifth insulator is connected with the sleeve 13 through a three-way connecting conducting rod 12, and the three-way connecting conducting rod 12 is located inside a three-way shell 14.

The first connecting conductor 18 is detachably connected with the insulating pull rod fixing component 7 through a second connecting conductor 19, specifically, a first end of the second connecting conductor 19 is fixedly welded with the first connecting conductor 18, and a second end is detachably connected with the insulating pull rod fixing component 7.

The structure of the insulating pull rod fixing component 7 is shown in fig. 2, and comprises an insulating pull rod housing 28 with a first end detachably mounted at a second end of the four-way housing 6 through a bolt, a top cover 20 detachably mounted at the second end of the insulating pull rod housing 28 through a bolt, an upper fixing plate 21 detachably mounted at the bottom of the top cover 20 through a bolt, and the upper fixing plate 21 and the first end of the first connecting component 22 are detachably connected through a bolt or a thread; the second end of the first connecting part 22 is connected with the first end of the insulating pull rod 8 through a bolt, the second end of the insulating pull rod 8 is connected with the first end of the second connecting part 23 through a bolt, the second end of the second connecting part 23 is detachably connected with a lower fixing plate 24 through a bolt or a thread, and the lower fixing plate 24 is installed on a supporting seat 25 through a bolt. The bottom of the supporting base 25 is fixedly provided with a supporting rod 26. The support rod 26 is inserted into the insertion hole 27 at the second end of the second connecting conductor 19 and is fixed by a spring clip. A handle is fixedly arranged on the top cover 20. During the use, at first with the both ends of insulating pull rod 8 respectively in first connecting part 22, the second connecting part 23 is fixed good for top cap 20, an upper fixed plate 21, insulating pull rod 8, bottom plate 24, supporting seat 25 form a whole, put into insulating pull rod housing 28 with it through the handle, bracing piece 26 is pegged graft in spliced eye 27, fixed top cap 20 can, convenient operation, and can experiment a plurality of insulating pull rod 8 simultaneously.

The bottom of the three-way shell 14 is fixedly provided with a three-way support 15.

An inflation valve 16 is installed on the bus shell 10, and a density relay is installed on the inflation valve 16. The charging valve is provided with M20 multiplied by 1.5 internal threads, the density relay is provided with M20 multiplied by 1.5 external threads, and the charging valve is connected with the density relay through threads and sealed through a sealing ring.

The insulated pull rod voltage-withstanding and partial discharge and lightning impulse test tool for the GIS belongs to an insulated pull rod test tool for a 252kV GIS, voltage-withstanding and partial discharge tests are directly connected and pressurized with the tool through voltage-withstanding equipment, the influence of external environment on the insulated pull rod partial discharge test can be eliminated, the accuracy of partial discharge test data is ensured, and therefore the safe operation of 252kV GIS equipment is ensured; and (4) carrying out lightning impulse test on the insulating pull rod by pressurizing the sleeve. The 252kV GIS is with withstand voltage of insulating pull rod and partial discharge and lightning impulse test frock equipment mainly comprises withstand voltage equipment, earthing switch, isolator, insulating pull rod housing, connecting bus, basin formula insulator, gas charging valve, density relay, sleeve pipe etc.. The structure is compact, the insulating pull rod is convenient to install during testing, the influence of the external environment on the accuracy of test data can be eliminated during partial discharge testing, and the accuracy of the partial discharge test data is ensured, so that the safe operation of 252kV GIS equipment is ensured.

According to the insulated pull rod voltage-withstand and partial discharge and lightning impulse test tooling equipment for the GIS, when voltage-withstand and partial discharge tests are carried out on an insulated pull rod, a disconnecting switch and a grounding switch on the side of a sleeve 13, namely a second disconnecting switch 17 and a second grounding switch, are disconnected, a disconnecting switch on the side of voltage-withstand equipment, namely a first disconnecting switch 5, is closed, a first grounding switch 4 is disconnected, and voltage-withstand and partial discharge tests are carried out on the insulated pull rod 8 by pressurizing through voltage-withstand equipment 1; when the lightning impulse test is carried out on the insulating pull rod, the first isolating switch 5 on the pressure-resistant equipment side is disconnected, the first grounding switch 4 is disconnected, the second isolating switch 17 on the sleeve side is closed, the second grounding switch 9 is disconnected, the sleeve 13 is connected with the lightning impulse test equipment through the steel-cored aluminum stranded wire, and the lightning impulse test is carried out on the insulating pull rod 8.

Claims

1. The utility model provides a GIS is with insulating pull rod withstand voltage and partial discharge and lightning impulse test frock which characterized in that: comprising a first insulator for connecting a pressure-resistant device (1), the first insulator is sequentially and fixedly connected with the first switch shell, the second insulator, the four-way shell (6), the third insulator, the second switch shell, the fourth insulator, the bus shell (10), the fifth insulator and the three-way shell (14); the three-way shell (14) is provided with a sleeve (13); install first isolator (5) between first insulator and the second insulator, install first connecting conductor (18) between second insulator and the third insulator, install second isolator (17) between third insulator and the fourth insulator, install between fourth insulator and the fifth insulator and connect generating line (11), the five insulators are connected with sleeve pipe (13) through three-way connection conducting rod (12), and fixed subassembly (7) fixed mounting of insulating pull rod is connected with first connecting conductor (18) electricity on four-way housing (6) and through second connecting conductor (19).

2. The insulated pull rod withstand voltage, partial discharge and lightning impulse test tool for the GIS according to claim 1, characterized in that: the first end of the second connecting conductor (19) is fixedly connected with the first connecting conductor (18), and the second end of the second connecting conductor is detachably connected with the insulating pull rod fixing component (7).

3. The insulated pull rod withstand voltage, partial discharge and lightning impulse test tool for the GIS according to claim 1 or 2, characterized in that: insulating pull rod fixed subassembly (7) include that first end and cross casing (6) can dismantle insulating pull rod housing (28) of being connected, the second end demountable installation top cap (20) of insulating pull rod housing (28), installing of top cap (20) top fixed plate (21), first connecting part (22) are installed to top fixed plate (21), first connecting part (22) can be dismantled with the first end of insulating pull rod (8) and be connected, the second end of reason pull rod (8) passes through the bolt and can dismantle with second connecting part (23) of installation on bottom plate (24) and be connected, bottom plate (24) are installed on can dismantle supporting seat (25) of being connected with second connecting conductor (19).

4. The insulated pull rod withstand voltage, partial discharge and lightning impulse test tool for the GIS according to claim 3, characterized in that: and a support rod (26) is fixedly mounted at the bottom of the support seat (25), and the support rod (26) is inserted into an insertion hole (27) in the second connecting conductor (19).

5. The insulated pull rod withstand voltage, partial discharge and lightning impulse test tool for the GIS according to claim 4, characterized in that: and an inflation valve (16) is arranged on the bus shell (10).

6. The insulated pull rod withstand voltage, partial discharge and lightning impulse test tool for the GIS according to claim 5, characterized in that: and a density relay is arranged on the inflation valve (16).