CN203103028U - High voltage bushing - Google Patents

Abstract

The utility model relates to an insulator of a high-voltage power station electrical appliance, in particular to a high-voltage bushing; the high-voltage bushing of the utility model adopts a pure dry insulation structure that is not filled with oil and gas, and has less pollution to the environment and is easy to maintain The number of times is less, and at the same time, it can effectively avoid explosions in case of failure, and the operation is safer and more reliable; including the capacitor core and the shed group, the capacitor core is equipped with an insulating layer, and the insulating layer in the capacitor core is glass fiber impregnated epoxy resin insulating layer , the umbrella skirt group is a silicone rubber umbrella skirt group; the high-voltage bushing of the utility model is widely used in the insulator of high-voltage power station electrical appliances.

Description

High voltage bushing

technical field

The utility model relates to an insulator of a high-voltage power station electrical appliance, in particular to a high-voltage bushing.

Background technique

As we all know, high-voltage bushings are a part of high-voltage power station electrical appliances. They are mainly used for insulation, support and current-carrying of high-voltage incoming and outgoing lines of transformers, reactors and power stations. They are divided into transformer bushings, reactor bushings, and wall bushings. Several types; the high-voltage bushings in the prior art generally include components such as a capacitor core and a shed skirt group. The shed skirt group is set on the capacitor core body. , paper insulation layer or SF6 gas insulation layer, and the sheds are mostly porcelain sheds. Such high-voltage bushings only have a service life of several decades, and there are problems such as oil leakage, air leakage, and environmental pollution. The workload of equipment maintenance is relatively large, and at the same time, explosions are prone to occur in the event of failure, which poses potential safety hazards to people and equipment.

Utility model content

In order to solve the above technical problems, the utility model provides a non-oil-filled, non-air-filled pure dry insulation structure, which has less pollution to the environment, fewer equipment maintenance times, and can effectively avoid explosions in case of failures, making the operation safer Reliable high voltage bushing.

The high-voltage bushing of the present utility model includes a capacitor core and a shed shed group, an insulating layer is arranged in the capacitor core, the insulating layer in the capacitor core is an insulating layer impregnated with glass fiber epoxy resin, and the shed shed group It is a silicone rubber umbrella skirt group.

In the high-voltage bushing of the utility model, the capacitor core is a glass fiber reinforced plastic capacitor core.

In the high-voltage bushing of the present invention, the shed set includes at least one large shed and at least one small shed, and the large shed and the small shed are alternately fitted on the capacitor core.

The high-voltage bushing of the utility model also includes a capacitor voltage divider, a flange, a pressure equalizing ball, a connection seat, a wiring seat and a conductive wire clip, and the connection seat and the pressure equalization ball are respectively installed on the capacitor core The two ends of the flange are set and fixed on the capacitor core, the capacitor voltage divider is fixedly connected to the flange, the terminal block is fixedly connected to the connecting seat, and the conductive wire The clip is fixedly connected to the terminal block.

In the high-voltage bushing of the utility model, the flange is provided with a grounding terminal.

In the high voltage bushing of the utility model, the flange is provided with a measuring terminal.

In the high-voltage bushing of the present utility model, the coupling seat and the pressure equalizing ball are fixedly connected to both ends of the capacitor core through threads.

In the high-voltage bushing of the utility model, the shed skirt group is mounted on the capacitor core with glue, and the capacitor voltage divider is mounted on the flange with glue.

In the high-voltage bushing of the utility model, the terminal block is fixed on the connection seat by bolts, and the conductive wire clamp is fixed on the terminal block by bolts.

Compared with the prior art, the utility model has the beneficial effects that: the insulating layer in the capacitor core is an insulating layer impregnated with glass fiber epoxy resin, and the shed group is a silicone rubber shed group; thus, due to no oil, no porcelain, no Gas (SF6), so the high-pressure bushing does not have the problem of oil leakage or gas leakage during use, has less environmental pollution, and does not have the possibility of explosion, and the operation is relatively safe and reliable. At the same time, the brought The design of the equipment is relatively simple, the installation is more convenient, and the number of equipment maintenance is effectively reduced. In addition, the use of silicone rubber umbrella skirts has excellent anti-pollution flashover ability and is not afraid of bumps.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

The high-voltage bushing of the present utility model includes a capacitor core 9 and an umbrella skirt group 4, an insulating layer is arranged in the capacitor core, the insulating layer in the capacitor core 9 is an insulating layer impregnated with glass fiber epoxy resin, and the umbrella skirt group 4 is Silicone rubber shed skirt group; in this way, because there is no oil, no porcelain, no gas (SF6), there is no problem of oil leakage or air leakage in the high-voltage bushing during use, and it has less environmental pollution and is not explosive. The possibility, the operation is relatively safe and reliable, at the same time, the equipment design is relatively simple, the installation is more convenient, and the number of equipment maintenance is effectively reduced. In addition, the silicone rubber shed group is used, and the anti-pollution flashover ability is relatively excellent. Not afraid of bumps.

In the high-voltage bushing of the present utility model, the capacitor core 9 is a glass fiber reinforced plastic capacitor core; in this way, the high-voltage bushing has high mechanical properties and can adapt to various harsh environments, and can be used at +50°C to -50°C with a humidity greater than 80 % safe operation under the conditions.

In the high-voltage bushing of the present utility model, the shed group 4 includes at least one large shed and at least one small shed, and the large shed and the small shed are alternately set on the capacitor core; in this way, various pollution and insulation conditions can be met. grade requirements.

The high-voltage bushing of the present utility model also includes a capacitor voltage divider 8, a flange 7, a pressure equalizing ball 10, a connection seat 3, a wiring seat 2 and a conductive wire clamp 1, and the connection seat 3 and the pressure equalization ball 10 are respectively installed on the capacitor At both ends of the core body 9, the flange 7 is set and fixed on the capacitor core body 9, the capacitor voltage divider 8 is fixedly connected to the flange 7, the terminal block 2 is fixedly connected to the connection seat 3, and the conductive wire clamp 1 is fixedly connected to the In this way, the insulation performance of the high-voltage bushing is good, and the structure is relatively simple.

In the high-voltage bushing of the utility model, the flange 7 is provided with a grounding terminal 6; in this way, the grounding terminal can ground the high-voltage bushing, effectively avoiding the use risk caused by the electrification of the high-voltage bushing.

In the high-voltage bushing of the utility model, the flange 7 is provided with a measuring terminal 5; in this way, the measuring terminal can monitor the operation status of the high-voltage bushing online at any time, realizing intelligence.

In the high-voltage bushing of the present utility model, the connection seat 3 and the pressure equalizing ball 10 are fixedly connected to both ends of the capacitor core 9 through threads; in this way, the connection mode of the connection seat and the pressure equalizing ball is more stable, and at the same time, it is convenient for disassembly and maintenance .

In the high-voltage bushing of the present utility model, the umbrella skirt group 4 is mounted on the capacitor core 9 with glue, and the capacitor voltage divider 8 is glued on the flange 7; like this, the umbrella skirt group and the capacitor voltage divider are connected in the same way It is more stable and easier to install.

In the high-voltage bushing of the utility model, the terminal block 2 is fixed on the connecting seat 3 by bolts, and the conductive wire clamp 1 is fixed on the terminal block 2 by bolts; in this way, the connection between the terminal block and the conductive wire clamp is more stable and convenient Disassembly and maintenance.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and modifications can also be made. And modification should also be regarded as the protection scope of the present utility model.

Claims (9)

1. a bushing comprises electric capacity core body and full skirt group, is provided with insulating barrier in the described electric capacity core body, it is characterized in that, the insulating barrier in the described electric capacity core body is a leached glass fiber epoxy resins insulation layer, and described full skirt group is a silicon rubber full skirt group.

2. bushing as claimed in claim 1 is characterized in that, described electric capacity core body is a fiberglass electric capacity core body.

3. bushing as claimed in claim 1 is characterized in that, described full skirt group comprises at least one big full skirt and at least one little full skirt, and described big full skirt and little full skirt alternately are sleeved on the described electric capacity core body successively.

4. as each described bushing of claim 1 to 3, it is characterized in that, also comprise capacitor voltage divider, flange, voltage equalizing ball, connection seat, junction block and conduction wire clamp, described connection seat and described voltage equalizing ball are installed in the two ends of described electric capacity core body respectively, described flange suit is fixed on the described electric capacity core body, described capacitor voltage divider is fixedly connected on the described flange, and described junction block is fixedly connected on the described connection seat, and described conductor wire clamping is connected on the described junction block surely.

5. bushing as claimed in claim 4 is characterized in that described flange is provided with earth terminal.

6. bushing as claimed in claim 4 is characterized in that described flange is provided with measurement terminal.

7. bushing as claimed in claim 4 is characterized in that, described connection seat and described voltage equalizing ball all are fixedly connected on the two ends of described electric capacity core body by screw thread.

8. bushing as claimed in claim 4 is characterized in that, described full skirt group sticks with glue and is contained on the described electric capacity core body, and described capacitor voltage divider sticks with glue and is contained on the described flange.

9. bushing as claimed in claim 4 is characterized in that, described junction block is by being bolted on the described connection seat, and described conduction wire clamp is by being bolted on the described junction block.

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