CN205666130U - Transformer insulation support - Google Patents

Abstract

The utility model provides a transformer insulation support, includes insulation porcelain body and sealed end cap, the top at insulation porcelain body is established to sealed end cap, insulation porcelain body's bottom is equipped with the base, the internal diameter of base and insulation porcelain body's external diameter looks adaptation, the periphery of base are equipped with the recess, insulation porcelain body's lower part shape is the cylinder, and insulation porcelain body's upper portion shape is the round platform, and the axle cross -section of round platform is isosceles trapezoid, is isosceles trapezoid's base angle 16 30, insulation porcelain body's lower part cover has the complex block ceramic chip, and insulation porcelain body's middle part is equipped with the wiring hole. Insulating effectual, sealing performance improves greatly, makes the use reliability of transformer and stability improve, has prolonged the life -span of transformer, decreasing failure rate, less maintenance work volume, can effectively prevent the laying dust, avoid causing current leakage, the security improves, convenient to use, the antiskid is effectual, has reduced the degree of difficulty of workman when the installation.

Description

A transformer insulating bushing

technical field

The utility model relates to the technical field of power distribution equipment, in particular to a transformer insulating bushing.

Background technique

The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core (magnetic core). The main functions include voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc. According to the purpose, it can be divided into: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, etc.

The transformer bushing is the main insulation device outside the transformer box. The lead-out wire of the transformer winding must pass through the insulating bushing to insulate between the lead-out wires and between the lead-out wire and the transformer shell, and at the same time play the role of fixing the lead-out wire. Therefore, the transformer bushing Tubes play an important role in the use of transformers.

At present, there are some defects in the use of transformer bushings on the market, such as: overheating of bushing joints, oil leakage, excessive dielectric loss of medium or oil, and poor contact of the end screen of the bushing. If it is used exposed for a long time, it is prone to dust accumulation, leading to current leakage and threatening personal safety. Moreover, the installation operation is risky, the anti-skid effect is poor, and the requirements for operators are high. It cannot be operated in bad weather such as wind and rain, and the installation is difficult.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art, and provide a transformer insulating bushing which has good insulation effect, is not easy to accumulate dust, and is easy to install.

The technical solution adopted by the utility model to solve the technical problem is that a transformer insulating bushing includes an insulating porcelain body and a sealing plug, the sealing plug is arranged on the top of the insulating porcelain body, and the bottom of the insulating porcelain body A base is provided, the inner diameter of the base is adapted to the outer diameter of the insulating porcelain body, grooves are arranged on the periphery of the base, the lower part of the insulating porcelain body is cylindrical, the upper part of the insulating porcelain body is a circular platform, and the shape of the circular platform is The cross-section of the shaft is isosceles trapezoid, and the base angle of the isosceles trapezoid is 16-30°. The lower part of the insulating ceramic body is covered with a plurality of ceramic pieces, and the middle part of the insulating ceramic body is provided with wiring holes.

Further, the lower part of the insulating ceramic body is covered with 6 tiles, and the tiles are arranged at equal intervals.

Further, the sealing plug is provided with external threads, the top of the insulating ceramic body is provided with internal threads, and the external threads of the sealing plug are compatible with the top internal threads of the insulating ceramic body.

Further, the arrangement of the grooves is equidistant.

Further, the inner diameter of the base is the same as the outer diameter of the insulating ceramic body.

Compared with the prior art, the utility model has a simple structure and ingenious design; the insulation effect is good, the sealing performance is greatly improved, the reliability and stability of the transformer are improved, the service life of the transformer is prolonged, the failure rate is reduced, and maintenance is reduced workload, the sealing plug is set on the top of the insulating porcelain body, and the inner diameter of the base matches the outer diameter of the insulating porcelain body; it can effectively prevent dust accumulation, avoid current leakage, and improve safety. The upper shape of the insulating porcelain body is Round table, the axial section of the round table is isosceles trapezoid, the bottom angle of isosceles trapezoid is 16-30°; easy to use, good anti-slip effect, which reduces the difficulty of workers in installation, and the periphery of the base is provided with grooves.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Example

With reference to accompanying drawing 1, present embodiment comprises insulating porcelain body 1 and sealing plug 2, and sealing plug 2 is arranged on the top of insulating porcelain body 1, and sealing plug 2 is provided with external thread, and the top of insulating porcelain body 1 is provided with internal thread. thread, the external thread of the sealing plug 2 is compatible with the top internal thread of the insulating porcelain body 1, so that the sealing plug 2 completely seals the top of the insulating porcelain body 1, and the bottom of the insulating porcelain body 1 is provided with a base 3, and the bottom of the base 3 The inner diameter is the same as the outer diameter of the insulating porcelain body 1, grooves 3-1 are arranged on the periphery of the base 3, the grooves 3-1 are arranged at equal intervals, the lower part of the insulating porcelain body 1 is cylindrical, and the insulating porcelain body 1 The shape of the upper part of the circular platform is a circular platform, the axial section of the circular platform is an isosceles trapezoid, and the base angle of the isosceles trapezoid is 20°. The lower part of the insulating ceramic body 1 is covered with 6 ceramic pieces 4, and the arrangement of the ceramic pieces 4 is equidistant. The middle part of the insulating ceramic body 1 is provided with a wiring hole 5 .

The insulation effect is good, the sealing performance is greatly improved, the reliability and stability of the transformer are improved, the life of the transformer is extended, the failure rate is reduced, and the maintenance workload is reduced; it can effectively prevent dust accumulation, avoid current leakage, and ensure safety. Improvement; easy to use, good anti-slip effect, reducing the difficulty of workers in installation.

Claims (5)

1. A transformer insulating bushing, characterized in that it comprises an insulating porcelain body and a sealing plug, the sealing plug is arranged on the top of the insulating porcelain body, the bottom of the insulating porcelain body is provided with a base, and the base of the base is The inner diameter matches the outer diameter of the insulating porcelain body, grooves are provided on the periphery of the base, the lower part of the insulating porcelain body is cylindrical, the upper part of the insulating porcelain body is a circular frustum, and the axial section of the circular frustum is isosceles trapezoidal, etc. The bottom angle of the waist trapezoid is 16-30°, the lower part of the insulating porcelain body is covered with plural pieces of porcelain pieces, and the middle part of the insulating porcelain body is provided with wiring holes. 2 . The transformer insulating bushing according to claim 1 , wherein the lower part of the insulating ceramic body is covered with 6 ceramic pieces, and the arrangement of the ceramic pieces is equidistant. 3. The transformer insulating bushing according to claim 1 or 2, characterized in that, the sealing plug is provided with external threads, the top of the insulating ceramic body is provided with internal threads, and the external threads of the sealing plug are in contact with the insulation The top internal thread of the porcelain body is compatible. 4 . The transformer insulating bushing according to claim 3 , wherein the grooves are arranged at equal intervals. 5. The transformer insulating bushing according to claim 4, wherein the inner diameter of the base is the same as the outer diameter of the insulating ceramic body.