CN213935836U

CN213935836U - Explosion-proof oil-immersed transformer

Info

Publication number: CN213935836U
Application number: CN202120105508.3U
Authority: CN
Inventors: 程波
Original assignee: Chengdu Xingmingyuan Electric Co ltd
Current assignee: Chengdu Xingmingyuan Electric Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-08-10
Anticipated expiration: 2031-01-15

Abstract

The utility model discloses an explosion-proof oily formula mutual-inductor, including base and explosion-proof housing, the base sets up to the spill base, fixed mounting has mutual-inductor body in the base, be provided with the rubber pad between mutual-inductor body and the base the upper end fixed mounting of insulator has the outlet wire to be arranged, explosion-proof housing cup joints in the upper end of base, the through-hole has been seted up to the upper end of explosion-proof housing, the upper end of insulator is run through the through-hole and is located explosion-proof housing top, fixed mounting has two sets of buffering subassemblies between explosion-proof housing and the mutual-inductor body, the equal slidable mounting of two inside walls of explosion-proof housing has two sets of contact blocks, the countersunk head screw hole has been seted up to the slot bottom, the screw thread blind hole that corresponds with the countersunk head screw hole is seted up to the bottom of contact block. The utility model discloses an explosion-proof housing is only fixed through countersunk head screw hole installation screw with the base, when disassembling the maintenance, only needs to dismantle screw, simple structure convenient to detach.

Description

Explosion-proof oil-immersed transformer

Technical Field

The utility model relates to a mutual-inductor equipment technical field specifically is an explosion-proof oil-immersed mutual-inductor.

Background

The mutual inductor is also called instrument transformer, and is a general name of current mutual inductor and voltage mutual inductor. The high voltage can be changed into low voltage, and the large current can be changed into small current for measuring or protecting the system. Its function is mainly to convert high voltage or large current into standard low voltage or standard small current in proportion so as to implement standardization and miniaturization of measuring instrument, protective equipment and automatic control equipment. Meanwhile, the transformer can be used for separating a high-voltage system to guarantee the safety of people and equipment, compared with the oil immersed current transformer in other insulation forms, the oil immersed current transformer is conducted and easy to repair, strong in restorability and simple in structure, and is generally used for outdoor use, but if the oil immersed current transformer explodes, the transformer substation equipment is greatly damaged, and the requirement on explosion-proof performance is high.

The existing mutual inductor is provided with an oil storage cabinet through a porcelain sleeve, the oil storage cabinet is provided with an expander, the whole mechanical strength and the sealing performance are improved, the reliability and the service life of the mutual inductor are improved, the mutual inductor can be suitable for areas with higher pollution levels, however, areas with higher pollution levels, external inflammable dust, more gas and more complexity are achieved, the sealing degree of the oil immersed current mutual inductor is improved nearly, the explosion-proof performance is not improved enough, and after the existing mutual inductor is additionally provided with an explosion-proof structure, subsequent maintenance and disassembly are inconvenient, so that the explosion-proof oil immersed mutual inductor needs to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof oily formula mutual-inductor is convenient for disassemble the maintenance, and the leakproofness is good to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an explosion-proof oil-immersed mutual inductor comprises a base and an explosion-proof housing, wherein the base is a concave base, a mutual inductor body is fixedly arranged in the base, a rubber pad is arranged between the mutual inductor body and the base, the upper end of the mutual inductor body is inserted with a porcelain bushing, the upper end of the porcelain bushing is fixedly provided with a wire outlet row, the explosion-proof housing is sleeved at the upper end of the base, the upper end of the explosion-proof housing is provided with a through hole, the upper end of the porcelain bushing penetrates through the through hole and is positioned above the explosion-proof housing, two groups of buffer components are fixedly arranged between the explosion-proof housing and the mutual inductor body, two groups of contact blocks are arranged on the two inner side walls of the explosion-proof housing in a sliding manner, the outer side wall of the base is provided with a slot corresponding to the contact block, the contact block is inserted in the slot, the bottom of the slot is provided with a countersunk threaded hole, and the bottom of the contact block is provided with a threaded blind hole corresponding to the countersunk threaded hole.

Preferably, the buffer assembly comprises an outer pipe and an inner rod, the outer pipe is fixedly installed on the mutual inductor body, the inner rod is inserted into the outer pipe, and the upper end of the inner rod is fixedly installed at the inner top of the explosion-proof housing.

Preferably, a first spring is fixedly installed in the outer tube, and the upper end of the first spring is fixedly connected with the lower end of the inner rod.

Preferably, a sliding groove is formed in the explosion-proof housing, one end of the contact block is fixedly installed in the sliding groove, a second spring is fixedly installed at the top in the sliding groove, and the lower end of the second spring is fixedly connected with the upper end of the contact block.

Preferably, an anti-collision block is fixedly mounted at the inner bottom of the sliding groove and is a rubber anti-collision block.

Preferably, a sealing ring is arranged between the porcelain sleeve and the mutual inductor body, an elastic pressing ring is fixedly mounted at the inner top of the explosion-proof housing, and the lower end of the elastic pressing ring is attached to the sealing ring.

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

the utility model discloses a countersunk screw hole has been seted up to the slot bottom, and the design of the screw thread blind hole that corresponds with countersunk screw hole is seted up to the bottom of contact piece for explosion-proof housing and base only are fixed through countersunk screw hole installation screw, when disassembling the maintenance, only need dismantle screw, simple structure convenient to detach.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the chute of the present invention;

fig. 3 is a schematic view of the buffering assembly of the present invention.

In the figure: 1. a base; 2. a transformer body; 3. a rubber pad; 4. an explosion-proof housing; 5. a contact block; 6. a slot; 7. countersunk threaded holes; 8. an elastic compression ring; 9. a porcelain bushing; 10. a seal ring; 11. discharging the wire; 12. a buffer assembly; 13. a chute; 14. a second spring; 15. an anti-collision block; 16. an inner rod; 17. an outer tube; 18. a first spring.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an explosion-proof oil immersed transformer comprises a base 1 and an explosion-proof housing 4, wherein the base 1 is a concave base, a transformer body 2 is fixedly arranged in the base 1, a rubber pad 3 is arranged between the transformer body 2 and the base 1, a porcelain bushing 9 is inserted at the upper end of the transformer body 2, and a wire outlet row 11 is fixedly arranged at the upper end of the porcelain bushing 9;

the explosion-proof housing 4 is sleeved at the upper end of the base 1, a through hole is formed in the upper end of the explosion-proof housing 4, the upper end of the porcelain bushing 9 penetrates through the through hole and is positioned above the explosion-proof housing 4, a sealing ring 10 is arranged between the porcelain bushing 9 and the mutual inductor body 2, an elastic compression ring 8 is fixedly installed at the inner top of the explosion-proof housing 4, and the lower end of the elastic compression ring 8 is attached to the sealing ring 10;

the sealing ring 10 is firmly pressed by the elasticity of the elastic pressing ring 8, and when the sealing ring expands, the sealing ring 10 can still be sealed due to the elasticity of the elastic pressing ring 8.

Two groups of buffer components 12 are fixedly arranged between the explosion-proof housing 4 and the mutual inductor body 2, each buffer component 12 comprises an outer pipe 17 and an inner rod 16, the outer pipe 17 is fixedly arranged on the mutual inductor body 2, the inner rod 16 is inserted into the outer pipe 17, the upper end of the inner rod 16 is fixedly arranged at the inner top of the explosion-proof housing 4, a first spring 18 is fixedly arranged in the outer pipe 17, and the upper end of the first spring 18 is fixedly connected with the lower end of the inner rod 16;

the force of the oil expanding upward is relaxed by the elastic force of the first spring 18, and explosion is further prevented.

Two groups of contact blocks 5 are slidably mounted on two inner side walls of the explosion-proof housing 4, a sliding groove 13 is formed in the explosion-proof housing 4, one end of each contact block 5 is fixedly mounted in the sliding groove 13, a second spring 14 is fixedly mounted at the top in the sliding groove 13, the lower end of the second spring 14 is fixedly connected with the upper end of the contact block 5, an anti-collision block 15 is fixedly mounted at the inner bottom of the sliding groove 13, and the anti-collision block 15 is a rubber anti-collision block;

the collision between the bottom of the sliding groove 13 and the contact block 5 can be buffered through the anti-collision block 15, and the phenomenon that the abrasion is too fast after long-time use is avoided.

The slot 6 that corresponds with contact block 5 is seted up to the lateral wall of base 1, and contact block 5 pegs graft in slot 6, and countersunk screw hole 7 has been seted up to slot 6 bottom, and the threaded blind hole that corresponds with countersunk screw hole 7 has been seted up to the bottom of contact block 5.

The working principle is as follows: contact 5's one end is pegged graft in slot 6 and is fixed in the bottom of slot 6 through the screw, when fluid inflation, explosion-proof housing 4 rebound, extrude second spring 14 through contact 5, and because the elasticity of second spring 14 relaxes explosion-proof housing 4 atress, avoid bursting, further make explosion-proof housing 4's upper end cushion the expanded power of fluid through buffer assembly 12, the power when making fluid upwards expand is relaxed through the elasticity of first spring 18, further avoid the explosion, make when disassembling the maintenance through the screw blind hole that countersunk head screw hole 7 corresponds, only need dismantle the screw, simple structure convenient to detach.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an explosion-proof oily formula mutual-inductor, includes base (1) and explosion-proof housing (4), its characterized in that: the anti-explosion transformer comprises a base (1), a transformer body (2) is fixedly installed in the base (1), a rubber pad (3) is arranged between the transformer body (2) and the base (1), a porcelain bushing (9) is inserted into the upper end of the transformer body (2), a wire outlet row (11) is fixedly installed at the upper end of the porcelain bushing (9), an anti-explosion housing (4) is sleeved on the upper end of the base (1), a through hole is formed in the upper end of the anti-explosion housing (4), the upper end of the porcelain bushing (9) penetrates through the through hole and is located above the anti-explosion housing (4), two groups of buffer assemblies (12) are fixedly installed between the anti-explosion housing (4) and the transformer body (2), two groups of contact blocks (5) are installed on two inner side walls of the anti-explosion housing (4) in a sliding mode, and slots (6) corresponding to the contact blocks (5) are formed in the outer side wall of the base (1), the contact block (5) is inserted into the slot (6), a countersunk threaded hole (7) is formed in the bottom of the slot (6), and a threaded blind hole corresponding to the countersunk threaded hole (7) is formed in the bottom of the contact block (5).

2. The explosion-proof oil-filled transformer of claim 1, wherein: the buffer assembly (12) comprises an outer pipe (17) and an inner rod (16), the outer pipe (17) is fixedly installed on the mutual inductor body (2), the inner rod (16) is inserted into the outer pipe (17), and the upper end of the inner rod (16) is fixedly installed at the inner top of the explosion-proof housing (4).

3. The explosion-proof oil-filled transformer of claim 2, wherein: a first spring (18) is fixedly mounted in the outer tube (17), and the upper end of the first spring (18) is fixedly connected with the lower end of the inner rod (16).

4. The explosion-proof oil-filled transformer of claim 1, wherein: the explosion-proof housing (4) is provided with a sliding groove (13), one end of the contact block (5) is fixedly arranged in the sliding groove (13), a second spring (14) is fixedly arranged at the inner top of the sliding groove (13), and the lower end of the second spring (14) is fixedly connected with the upper end of the contact block (5).

5. The explosion-proof oil-filled transformer of claim 4, wherein: an anti-collision block (15) is fixedly mounted at the inner bottom of the sliding groove (13), and the anti-collision block (15) is a rubber anti-collision block.

6. The explosion-proof oil-filled transformer of claim 1, wherein: be provided with between insulator (9) and mutual-inductor body (2) sealing washer (10), the interior top fixed mounting of explosion-proof housing (4) has elasticity clamping ring (8), the lower extreme and the sealing washer (10) laminating of elasticity clamping ring (8).