Environment-friendly three-phase box-sharing environment-friendly sleeve

Abstract

The utility model relates to the technical field of high-voltage switch power transmission equipment, in particular to an environment-friendly three-phase box-sharing environment-friendly sleeve, which comprises a basin-type insulator, three bases, three special-shaped conductor contacts, three conducting rods, three shielding covers, a sleeve, a gas density relay, an explosion-proof membrane, an adsorbent, a tank body and a plurality of fastening bolts, the tank body and the three bases are all in bolted connection with the basin-type insulator, through reasonable contact appearance design and part diameter adjustment, the requirements of electric fields and through-current capability under different environment-friendly insulating media can be met, a density relay, an explosion-proof membrane and an adsorbent can be selected according to user requirements, environment-friendly gas is adopted as an internal insulating medium, and the environment-friendly insulating medium is used as an external insulating medium. Meanwhile, a three-phase common air chamber structure is arranged, and the interphase insulation requirement of the high-voltage side in the air can be met by adjusting the size of the included angle between the sleeves, so that the environment of greenhouse gas emission of the traditional switch equipment is prevented from being disturbed.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage switch power transmission equipment, in particular to an environmentally friendly three-phase common box environmentally friendly bushing. Background Art

[0002] At present, switchgear is an important electrical equipment in the power system, and bushing is an important component of switchgear. Bushing for gas-insulated metal-enclosed switchgear is a switchgear with insulating gas as the insulating medium. Different insulating gases have different insulation strengths. Conventional equipment uses sulfur hexafluoride as the insulating medium, and sulfur hexafluoride is a strong greenhouse gas. Therefore, it is imperative to use switchgear with environmentally friendly gas as the insulating medium.

[0003] However, in the above-mentioned prior art, the environmentally friendly gas has lower insulation strength and poorer heat dissipation capacity than sulfur hexafluoride gas. Utility Model Content

[0004] The utility model aims to provide an environmentally friendly three-phase common box environmentally friendly bushing, which solves the problem in the prior art that the environmentally friendly gas has lower insulation strength and poorer heat dissipation capacity than sulfur hexafluoride gas.

[0005] To achieve the above-mentioned purpose, the utility model provides an environmentally friendly three-phase common box environmentally friendly bushing, comprising a pot-type insulator, three bases, three special-shaped conductor contacts, three conductive rods, three shielding covers, a bushing, a gas density relay, an explosion-proof membrane and an adsorbent, a tank body and a plurality of fastening bolts, wherein the tank body and the three bases are bolted to the pot-type insulator, the three bushings are sequentially installed on the tank body, one end of the three special-shaped conductor contacts are respectively connected to the corresponding base through the corresponding fastening bolts, the other ends of the three special-shaped conductor contacts are respectively arranged on one end of the corresponding conductive rod, the other ends of the three conductive rods are respectively arranged on the corresponding bushings, the three shielding covers are sequentially bolted to the tank body, and the gas density relay and the explosion-proof membrane and the adsorbent are sequentially installed on one side of the tank body.

[0006] Wherein, the conductive rod includes a terminal block, a sleeve sealing flange and a conductive rod body, one end of the terminal block is connected to one end of the conductive rod body, the other end of the conductive rod body is connected to the special-shaped conductor contact, the sleeve sealing flange is sleeved at the connection between the terminal block and the conductive rod body, and the sleeve sealing flange is connected to the terminal block and the conductive rod body.

[0007] Wherein, the gas density relay is located on one side of the explosion-proof membrane and the adsorbent.

[0008] Wherein, the three shielding covers are respectively sleeved on the outside of the corresponding conductive rods.

[0009] Wherein, the pot-type insulator is installed vertically.

[0010] The utility model discloses an environmentally friendly three-phase common box environmentally friendly bushing, which can meet the requirements of electric field and current carrying capacity under different environmentally friendly insulating media through reasonable contact shape design and adjustment of part diameter. Density relays, explosion-proof membranes and adsorbents can be selected according to user requirements. Environmentally friendly gas is used as the internal insulating medium, and a three-phase common gas chamber structure is set up. By adjusting the angle between the bushings, the phase-to-phase insulation requirements on the high-voltage side in the air can be met, thereby avoiding environmental disturbance caused by greenhouse gas emissions from traditional switchgear. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0012] Figure 1 It is a structural diagram of the three-phase common box environmental protection bushing of the utility model.

[0013] Figure 2 It is a cross-sectional view of the three-phase common box environmental protection bushing of the utility model.

[0014] Figure 3 It is a design structure diagram of the contact and the opposite-sex conductor of the utility model.

[0015] Figure 4 It is a design structure diagram of a conventional contact and a conductor of opposite sex of the utility model.

[0016] Figure 5 It is a design structure diagram of the conductive rod of the utility model.

[0017] Figure 6 It is a design structure diagram of a conventional conductive rod of the utility model.

[0018] 1-pot insulator, 2-base, 3-special-shaped conductor contact, 4-conducting rod, 5-shielding cover, 6-bushing, 7-gas density relay, 8-explosion-proof membrane and adsorbent, 9-tank, 10-fastening bolts, 11-terminal board, 12-bushing sealing flange, 13-conducting rod body, 21-conventional base, 22-clamp, 23-special-shaped conductor. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] See also Figures 1 to 6The utility model provides an environmentally friendly three-phase common box environmentally friendly bushing 6, comprising a pot-type insulator 1, three bases 2, three special-shaped conductor contacts 3, three conductive rods 4, three shielding covers 5, a bushing 6, a gas density relay 7, an explosion-proof membrane and an adsorbent 8, a tank body 9 and a plurality of fastening bolts 10, wherein the tank body 9 and the three bases 2 are bolted to the pot-type insulator 1, and the three bushings 6 are sequentially mounted on the tank body 9, one end of the three special-shaped conductor contacts 3 is respectively connected to the corresponding base 2 through the corresponding fastening bolts 10, the other end of the three special-shaped conductor contacts 3 is respectively arranged at one end of the corresponding conductive rod 4, and the other end of the three conductive rods 4 is respectively arranged on the corresponding bushing 6, the three shielding covers 5 are sequentially bolted to the tank body 9, and the gas density relay 7 and the explosion-proof membrane and the adsorbent 8 are sequentially mounted on one side of the tank body 9.

[0021] Furthermore, the conductive rod 4 includes a terminal block 11, a sleeve sealing flange 12, and a conductive rod body 13. One end of the terminal block 11 is connected to one end of the conductive rod body 13, and the other end of the conductive rod body 13 is connected to the special-shaped conductor contact 3. The sleeve sealing flange 12 is sleeved at the connection between the terminal block 11 and the conductive rod body 13, and the sleeve sealing flange 12 is connected to the terminal block 11 and the conductive rod body 13.

[0022] Furthermore, the gas density relay 7 is located on one side of the explosion-proof membrane and the adsorbent 8 .

[0023] Furthermore, the three shielding covers 5 are respectively sleeved on the outside of the corresponding conductive rods 4 .

[0024] Furthermore, the pot-type insulator 1 is installed vertically.

[0025] In this embodiment, the bushing 6 can adopt two structures: a porcelain bushing 6 and a composite bushing 6. The present application is a three-phase common air chamber structure. The three-phase bushings 6 are installed on the tank body 9 at a certain angle so that the high-voltage side of the bushing 6 meets the air insulation requirements; the basin insulator 1 serves as the basis of the overall structure, the base 2 and the tank body 9 are installed on the basin insulator 1, and the basin insulator 1 is arranged vertically to avoid contamination of the surface of the basin insulator 1 by impurities; by adjusting the base 2 and the outer dimensions of the special-shaped conductor contact 3, a lower electric field strength of the base 2 and the special-shaped conductor contact 3 can be achieved under high voltage conditions; by adjusting the outer shape of the shielding cover 5, a lower electric field strength of the conductive rod 4 under high voltage conditions can be achieved; adjusting Adjusting the outer diameters of the base 2, the special-shaped conductor contact 3 and the conductive rod 4 can meet the requirements of the flow capacity; after the gas density relay 7 and the explosion-proof membrane and adsorbent 8 are installed on the tank body 9, the gas density can be detected, and at the same time, the explosion-proof and adsorption effects are played to meet the requirements of different users for the bushing 6. Therefore, through reasonable contact shape design and adjustment of part diameters, the electric field and flow capacity requirements under different environmentally friendly insulating media can be met. The density relay, explosion-proof membrane and adsorbent 8 can be selected according to user requirements, and environmentally friendly gas is used as the internal insulating medium. At the same time, a three-phase common gas chamber structure is set. By adjusting the angle between the bushings 6, the phase-to-phase insulation requirements on the high-voltage side in the air can be met, thereby avoiding environmental disturbance caused by greenhouse gas emissions from traditional switchgear;

[0026] The conductive rod 4 is an integrally welded structure, and the bushing sealing flange 12, the terminal block 11 and the conductive rod body 13 are made into an integral structure by welding;

[0027] The conductive rod body 13 and the special-shaped conductor contact 3 are electrically connected using spring contact fingers, and different current carrying capacity requirements can be met by adjusting the number and size of the spring contact fingers;

[0028] The design principle of the contact and the special-shaped conductor contact 3 is as follows Figure 3 As shown, by adjusting the outer dimensions of the base 2 and the special-shaped conductor contact 3, the base 2 and the special-shaped conductor contact 3 can achieve a lower electric field strength under high voltage conditions, that is, when the allowable value is met, the electric field strength at point b in the figure is lower than or equal to the electric field strength at point a; the connection form of the conventional contact and the special-shaped conductor 23 is shown in FIG. Figure 4 As shown, the contact is composed of a base 21 and a clamp 22. The base 21 and the clamp 22 are coaxial semicircular shapes. The special-shaped conductor 23 is placed between the base 21 and the clamp 22. The base 21 and the clamp 22 are connected and fastened with screws. In this structure, there is a gap between the conventional base 21 and the clamp 22, and the edge fillet has a very large electric field on the tank body 9, which cannot meet the requirements of environmentally friendly insulating media.

[0029] The design principle of the conductive rod 4 is as follows Figure 5 As shown, the sleeve sealing flange 12, the terminal block 11 and the conductive rod body 13 are made into an integrated structure by welding. The conventional design of the conductive rod 4 is shown in Figure 6 As shown, the terminal block 11 is fixed by welding a vertical plate and a flange, the conductive rod body 13 is fixed by welding a conductor and a flange, and the bushing sealing flange 12 is an independent flange plate, which is connected to the terminal block 11 by bolts on the left side and connected to the conductive rod body 13 by bolts on the right side. Figure 5 The conductive rod 4 and Figure 6 In comparison, less material is used and it is more economical.

[0030] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An environmentally friendly three-phase common box environmentally friendly bushing, characterized in that: It includes a pot-type insulator, three bases, three special-shaped conductor contacts, three conductive rods, three shielding covers, a bushing, a gas density relay, an explosion-proof membrane and an adsorbent, a tank body and a plurality of fastening bolts. The tank body and the three bases are bolted to the pot-type insulator, the three bushings are sequentially installed on the tank body, one end of the three special-shaped conductor contacts is respectively connected to the corresponding base through the corresponding fastening bolts, the other ends of the three special-shaped conductor contacts are respectively arranged on one end of the corresponding conductive rod, the other ends of the three conductive rods are respectively arranged on the corresponding bushings, the three shielding covers are sequentially bolted to the tank body, and the gas density relay and the explosion-proof membrane and the adsorbent are sequentially installed on one side of the tank body.

2. The environmentally friendly three-phase common box environmentally friendly bushing according to claim 1, characterized in that: The conductive rod comprises a terminal block, a sleeve sealing flange and a conductive rod body, one end of the terminal block is connected to one end of the conductive rod body, the other end of the conductive rod body is connected to the special-shaped conductor contact, the sleeve sealing flange is sleeved at the connection between the terminal block and the conductive rod body, and the sleeve sealing flange is connected to the terminal block and the conductive rod body.

3. The environmentally friendly three-phase common box environmentally friendly bushing according to claim 2, characterized in that: The gas density relay is located on one side of the explosion-proof membrane and the adsorbent.

4. The environmentally friendly three-phase common box environmentally friendly bushing according to claim 3, characterized in that: The three shielding covers are respectively sleeved on the outside of the corresponding conductive rods.

5. The environmentally friendly three-phase common box environmentally friendly bushing according to claim 4, characterized in that: The pot-type insulator is installed vertically.

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