CN212625034U

CN212625034U - Lightning protection device of oil-immersed transformer

Info

Publication number: CN212625034U
Application number: CN202021744914.6U
Authority: CN
Inventors: 刘剑
Original assignee: Taizhou Yuyang Electric Co ltd
Current assignee: Taizhou Yuyang Electric Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-02-26
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses an oil-immersed transformer's lightning protection device relates to oil-immersed transformer technical field, for the not good enough problem of lightning protection effect of solving the ordinary oil-immersed transformer among the prior art. The utility model discloses a rain shed, including insulation box, insulating case, sealing flange, stand, conducting tube, hinge and insulating case, the internally mounted of insulating case has insulating rubber, and insulating rubber passes through fastening screw fixed connection with the insulation box, sealing flange is installed to one side of insulating case, and conducting tube and sealing flange welded connection, the pillar is installed to the top of insulation box, and pillar and insulation box pass through fastening screw fixed connection, the canopy is installed to the top of pillar, and canopy and pillar welded connection, install the hinge on the preceding terminal surface of insulation box, and hinge and insulation box welded connection, install the chamber door on the preceding terminal surface of insulation box, and the chamber door passes through hinge rotation with the insulation box and is connected.

Description

Lightning protection device of oil-immersed transformer

Technical Field

The utility model relates to an oil-immersed transformer technical field specifically is an oil-immersed transformer's lightning protection device.

Background

The transformer is a static electric equipment for transforming AC voltage and current and transmitting AC energy, it realizes electric energy transmission according to the principle of electromagnetic induction, the transformer can be divided into power transformer, test transformer, instrument transformer and special purpose transformer, the power transformer is the necessary equipment for power transmission and distribution and power consumer distribution, the test transformer is the equipment for pressure resistance test (boosting) of electric equipment, the instrument transformer is used for electric measurement and relay protection (PT, CT) of distribution system, the special purpose transformer is smelting electric furnace transformer, electric welding transformer, electrolytic rectifier transformer, small-sized regulating transformer, etc.

An oil immersed transformer is also one of the transformers, and a transformer using transformer oil as an insulating and cooling medium is used as the oil immersed transformer, and most of the transformers are used outdoors, but the lightning protection effect of a common oil immersed transformer is not good enough, and the common oil immersed transformer is easy to damage when being struck by lightning; therefore, the market urgently needs to develop a lightning protection device of the oil-immersed transformer to help people to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil-immersed transformer's lightning protection device to solve the not good enough problem of ordinary oil-immersed transformer's lightning protection effect that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an oil-immersed transformer's lightning protection device, includes insulating box and transformer, the internally mounted of insulating box has insulating rubber, and insulating rubber and insulating box pass through fastening screw fixed connection, sealing flange is installed to one side of insulating box, and sealing flange and insulating box fixed connection, the current-conducting tube is installed to one side of sealing flange, and current-conducting tube and sealing flange welded connection.

Preferably, the pillar is installed to the top of insulating case, and the pillar passes through fastening screw fixed connection with the insulating case, the canopy is installed to the top of pillar, and canopy and pillar welded connection.

Preferably, a hinge is installed on the front end face of the insulating box and is connected with the insulating box in a welding mode, a box door is installed on the front end face of the insulating box, and the box door is connected with the insulating box in a rotating mode through the hinge.

Preferably, the base is installed to the below of insulating case, and base and insulating case welded connection, one side of insulating case is provided with the radiating groove, and radiating groove and insulating case set up structure as an organic whole.

Preferably, the supporting legs are installed below the transformer and are connected with the transformer in a welded mode, the supporting legs are fixedly connected with the insulating box through fastening screws, the radiating grids are installed on the front end face of the transformer and are fixedly connected with the transformer through the fastening screws.

Preferably, the apron is installed to the top of transformer, and laps and pass through bolt fixed connection with the transformer, the support is installed to the top of apron, and support and apron welded connection, the oil tank is installed to the top of support, and the oil tank passes through fastening screw fixed connection with the support, defeated oil pipe is installed to the below of oil tank, oil tank and transformer are all through flange and defeated oil pipe fixed connection, defeated electric terminal is installed to the top of apron, and the terminal and the apron fixed connection of transmitting power.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting through the insulating case, the lightning arrester of traditional transformer only sets up a lead wire ground connection in one side of transformer, but still expose whole transformer in the external world, when thunderstorm joins, the transformer is still hit easily to the thunder and lightning, thereby cause the damage of transformer, and the setting through the insulating case, live transformer parcel, prevent that the thunder and lightning from directly hitting the transformer on the one hand, another conveniently prevents that the transformer from excessively invading the moisture by the rainwater, thereby reach more effectual lightning protection effect, make the lightning protection ability of this transformer stronger, make this transformer be difficult to hit and damage by the thunder and lightning, thereby make this transformer use safe and reliable more.

2. The utility model discloses a through insulating rubber's setting, improve the insulating nature of insulating case to promote the lightning protection effect of insulating case, make and install the transformer operational environment in insulating case inside safer.

Drawings

Fig. 1 is a front view of a lightning protection device of an oil-immersed transformer according to the present invention;

fig. 2 is a schematic diagram of an internal structure of a lightning protection device of an oil-immersed transformer according to the present invention;

fig. 3 is a side view of the utility model discloses an oil-immersed transformer's lightning protection device.

In the figure: 1. an insulating case; 2. a canopy; 3. a pillar; 4. a box door; 5. a hinge; 6. sealing the flange; 7. a conductive tube; 8. an insulating rubber; 9. a transformer; 10. a heat dissipation grid; 11. a support leg; 12. an oil tank; 13. a support; 14. an oil delivery pipe; 15. a cover plate; 16. a power transmission terminal; 17. a heat sink; 18. a base.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides an oil-immersed transformer's lightning protection device, includes insulating box 1 and transformer 9, and the internally mounted of insulating box 1 has insulating rubber 8, and insulating rubber 8 and insulating box 1 pass through fastening screw fixed connection, and sealing flange 6 is installed to one side of insulating box 1, and sealing flange 6 and insulating box 1 fixed connection, and conductive tube 7 is installed to one side of sealing flange 6, and conductive tube 7 and sealing flange 6 welded connection.

Further, pillar 3 is installed to the top of insulating case 1, and pillar 3 passes through fastening screw fixed connection with insulating case 1, and canopy 2 is installed to the top of pillar 3, and canopy 2 and pillar 3 welded connection, and pillar 3 is provided with four.

Further, install hinge 5 on the preceding terminal surface of insulating box 1, and hinge 5 and insulating box 1 welded connection, install chamber door 4 on the preceding terminal surface of insulating box 1, and chamber door 4 passes through hinge 5 with insulating box 1 and rotates and be connected, and the junction of chamber door 4 and insulating box 1 is provided with sealed the pad, prevents that a large amount of rainwater from getting into the inside of insulating box 1.

Further, base 18 is installed to the below of insulating case 1, and base 18 and insulating case 1 welded connection, and one side of insulating case 1 is provided with radiating groove 17, and radiating groove 17 sets up structure as an organic whole with insulating case 1, and the radiating groove 17 that insulating case 1 both sides all set up is convenient for the inside heat dissipation that dispels of insulating case 1, and the thermovent of radiating groove 17 designs downwards, prevents that the rainwater from getting into.

Furthermore, landing leg 11 is installed to the below of transformer 9, and landing leg 11 and transformer 9 welded connection, and landing leg 11 passes through fastening screw fixed connection with insulating case 1, installs heat dissipation grid 10 on the preceding terminal surface of transformer 9, and heat dissipation grid 10 passes through fastening screw fixed connection with transformer 9, and landing leg 11 is provided with two, is provided with heat dissipation grid 10 on the rear end face of transformer 9 equally, improves transformer 9's radiating effect.

Further, a cover plate 15 is installed above the transformer 9, the cover plate 15 is fixedly connected with the transformer 9 through bolts, a support 13 is installed above the cover plate 15, the support 13 is connected with the cover plate 15 in a welded mode, an oil tank 12 is installed above the support 13, the oil tank 12 is fixedly connected with the support 13 through fastening screws, an oil conveying pipe 14 is installed below the oil tank 12, the oil tank 12 and the transformer 9 are both fixedly connected with the oil conveying pipe 14 through flanges, an electric power transmission terminal 16 is installed above the cover plate 15, the electric power transmission terminal 16 is fixedly connected with the cover plate 15, and transformer oil is installed inside the oil tank 12 and used for oiling the transformer 9.

The working principle is as follows: when in use, the box door 4 is opened, the transformer 9 is placed in the insulating box 1, the supporting legs 11 are fixed in the insulating box 1 through the fastening screws, thereby fixing the transformer 9, providing a rain sheltering environment above the insulating box 1 when raining through the arrangement of the rain shed 2, preventing the connecting part of the power transmission terminal 16 from directly contacting with rainwater, thereby preventing electric leakage and short circuit, and the electric current on the surface of the insulating box 1 can be led to the ground by arranging the grounded electric wire in the conductive tube 7, and through the arrangement of the conductive tube 7, the rainwater can be prevented from wetting the electric wire, the occurrence of electric leakage and short circuit can be prevented, when lightning strikes the insulation box 1, the current is isolated and can not contact with the transformer 9, thereby playing the function of protecting the transformer 9, then the current will be conducted to the ground through the grounding wire inside the conductive tube 7, thereby realizing the function of lightning protection.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an oil-immersed transformer's lightning protection device, includes insulating case (1) and transformer (9), its characterized in that: the utility model discloses a sealing structure of insulation box, including insulation box (1), insulating box (1) internally mounted have insulating rubber (8), and insulating rubber (8) and insulation box (1) pass through fastening screw fixed connection, sealing flange (6) are installed to one side of insulation box (1), and sealing flange (6) and insulation box (1) fixed connection, contact tube (7) are installed to one side of sealing flange (6), and contact tube (7) and sealing flange (6) welded connection.

2. The lightning protection device for oil-filled transformer according to claim 1, characterized in that: pillar (3) are installed to the top of insulating case (1), and pillar (3) pass through fastening screw fixed connection with insulating case (1), canopy (2) are installed to the top of pillar (3), and canopy (2) and pillar (3) welded connection.

3. The lightning protection device for oil-filled transformer according to claim 1, characterized in that: install hinge (5) on the preceding terminal surface of insulating box (1), and hinge (5) and insulating box (1) welded connection, install chamber door (4) on the preceding terminal surface of insulating box (1), and chamber door (4) rotate through hinge (5) with insulating box (1) and be connected.

4. The lightning protection device for oil-filled transformer according to claim 1, characterized in that: base (18) are installed to the below of insulating case (1), and base (18) and insulating case (1) welded connection, one side of insulating case (1) is provided with radiating groove (17), and radiating groove (17) set up structure as an organic whole with insulating case (1).

5. The lightning protection device for oil-filled transformer according to claim 1, characterized in that: landing leg (11) are installed to the below of transformer (9), and landing leg (11) and transformer (9) welded connection, landing leg (11) and insulating case (1) are through fastening screw fixed connection, install heat dissipation grid (10) on the preceding terminal surface of transformer (9), and heat dissipation grid (10) and transformer (9) are through fastening screw fixed connection.

6. The lightning protection device for oil-filled transformer according to claim 1, characterized in that: apron (15) are installed to the top of transformer (9), and apron (15) pass through bolt fixed connection with transformer (9), support (13) are installed to the top of apron (15), and support (13) and apron (15) welded connection, oil tank (12) are installed to the top of support (13), and oil tank (12) pass through fastening screw fixed connection with support (13), defeated oil pipe (14) are installed to the below of oil tank (12), oil tank (12) and transformer (9) all are through flange and defeated oil pipe (14) fixed connection, defeated electric terminal (16) are installed to the top of apron (15), and defeated electric terminal (16) and apron (15) fixed connection.