CN113921228B

CN113921228B - Mining safe dry-type transformer

Info

Publication number: CN113921228B
Application number: CN202111295335.7A
Authority: CN
Inventors: 杜志民; 贺龙均
Original assignee: Zhejiang Hangtuo Power Equipment Co ltd; Hangbian Power Technology Co ltd
Current assignee: Zhejiang Hangtuo Power Equipment Co ltd; Hangbian Power Technology Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2023-09-12
Anticipated expiration: 2041-11-03
Also published as: CN113921228A

Abstract

The invention discloses a mining safe dry-type transformer, which relates to the technical field of transformers and comprises a bottom plate, wherein the bottom plate is provided with: the transformer comprises a transformer body, wherein a heat conduction oil pipe for cooling the inside of the transformer body is arranged on the transformer body; the protection assembly comprises a mounting frame and a plurality of guard plates which are arranged in the mounting frame in a sliding manner, and a reversing mechanism and a driving mechanism for promoting the circulation flow of the heat conducting medium in the heat conducting oil pipe are arranged on the guard plates; the buffer oil bag is communicated with the heat conduction oil pipe to form a complete fluid loop, and is made of elastic materials. According to the invention, the protective plate is used for protecting the splashing ore of the transformer body, and when the protective plate is reset, the protective plate is reversed under the cooperation of the gear and the rack, and when the protective plate is impacted again, the protective plate receives impact on the opposite surface, so that deformation generated by the previous impact is counteracted, and the durability of the protective plate is improved.

Description

Mining safe dry-type transformer

Technical Field

The invention relates to the technical field of transformers, in particular to a mining safe dry-type transformer.

Background

Dry transformers are widely used in places such as local lighting, high-rise buildings, airports, wharf CNC machinery, etc., and simply refer to transformers in which the iron cores and windings are not immersed in insulating oil. Dry transformers are classified into open type, closed type and casting type, and in mine filled with dangerous gas, closed type transformers are generally used, i.e. the body is located in a closed shell and is not in direct contact with the atmosphere, so as to reduce the risk of explosion caused by arc sparks.

In the prior art, a transformer used in a mine is generally directly installed in a mine tunnel to provide power for the mine, but the environment in the mine tunnel is complex, a mining vehicle loads ore to strike the transformer through stones which cannot fly out without vibration, so that the protective shell of the transformer is broken, the service life of the transformer is reduced, when the transformer is serious, the arc of the transformer leaks to cause danger, a fence is arranged in part of the mine to protect the transformer, but the fence has low protective strength and poor durability, can deform and damage after being impacted for several times and needs to repair and replace a guardrail, otherwise, the protection effect is not achieved, the safety is poor, and the safety is quite inconvenient.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a protective shell of a transformer is broken, and guard rails are poor in protection durability and safety caused by the impact of a mineral block on the transformer, and provides a mining safety dry-type transformer.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a mining safe type dry-type transformer, includes the bottom plate, be equipped with on the bottom plate:

the transformer comprises a transformer body, wherein a heat conduction oil pipe for cooling the inside of the transformer body is arranged on the transformer body;

the protection assembly comprises a mounting frame and a plurality of guard plates which are arranged in the mounting frame in a sliding manner, and a reversing mechanism and a driving mechanism for promoting the circulation flow of the heat conducting medium in the heat conducting oil pipe are arranged on the guard plates;

the buffer oil bag is communicated with the heat conduction oil pipe to form a complete fluid loop, and is made of elastic materials.

Preferably, the transformer body is arranged in a manner of a closed shell, and a plurality of radiating fins are arranged outside the transformer body.

Preferably, the heat conduction oil pipes are divided into two groups, and the heat conduction oil pipes partially penetrate through the inside of the transformer body.

Preferably, a plurality of equidistance slide ways that set up have been seted up to the installing frame inside wall, slide in the slide and be provided with the slipform that is used for supporting the backplate.

Preferably, the reversing mechanism comprises a shaft body fixedly arranged at two ends of the guard plate and rotationally connected with the sliding frame, a one-way bearing is fixedly arranged on the outer side wall of the shaft body, a gear is arranged on the outer peripheral surface of the one-way bearing, a rack meshed with the gear is arranged on the inner side wall of the slideway, and the gear is enabled to rotate 180 degrees when rolling along the rack.

Preferably, the outer side wall of the shaft body is provided with a damper, so that the shaft body and the sliding frame keep the original state under the action of no external force.

Preferably, the driving mechanism comprises a sleeve arranged on the heat conduction oil pipe and communicated with the inside of the heat conduction oil pipe, and a push rod which is in sealing sliding sleeving connection with the sleeve is fixedly arranged on the outer side wall of the sliding frame.

Preferably, the plurality of the sleeves are distributed in a linear array along the height direction of the heat conducting oil pipe.

Preferably, the two groups of heat conduction oil pipes are provided with one-way valves, so that heat conduction media in the heat conduction oil pipes can only flow unidirectionally.

Preferably, the buffering oil bag can also be an oil tank, a sliding hole is formed in the oil tank, a sliding column is arranged in the sliding hole in a sealing sliding manner, a buffering spring is arranged between the sliding column and the inner bottom of the oil tank, a toothed bar is fixedly arranged at the top of the sliding column, a rotating shaft is rotatably arranged on one side, close to the oil tank, of the transformer body, a plurality of blowing fan blades are arranged on the outer peripheral surface of the rotating shaft at equal intervals, and a driving gear meshed with the toothed bar is fixedly arranged at the end part of the rotating shaft.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the mounting frame, the guard plate and the reversing mechanism are arranged on one side of the transformer body, which is close to a mine channel, when a splashed stone bumps against the transformer body, the guard plate stops down the stone, the oil pressure in the heat conduction oil pipe rises under the cooperation of the push rod and the sleeve, so that the buffer oil bag is inflated to offset the impact force born by the guard plate, and after the stone falls, the push rod resets to drive the guard plate to return to the initial position, and due to the unidirectional bearing arranged outside the guard plate shaft body, when the guard plate resets, the guard plate is reversed under the cooperation of the gear and the rack, and when the guard plate is impacted again, the guard plate receives the impact on the opposite surface to offset the deformation generated by the last impact, so that the durability of the guard plate is improved, and the problems of poor guard bar protection durability and poor safety in the prior art are solved.

2. According to the invention, the heat conduction oil pipe, the buffer oil bag, the push rod and the sleeve are arranged, so that after stone bumps against the guard board, the push rod moves to promote the heat conduction medium in the heat conduction oil pipe to flow, the fluidity of the heat conduction medium is improved, the heat conduction medium is beneficial to guiding out the heat in the transformer body, the heat dissipation effect of the transformer body is improved, and the risk of damaging and exploding the transformer due to high temperature is reduced.

Drawings

Fig. 1 is a schematic perspective view of a mining safety dry-type transformer according to the present invention;

fig. 2 is a schematic diagram of a three-dimensional structure of a mining safety dry-type transformer according to the present invention;

fig. 3 is a schematic structural diagram of a connection relationship between a transformer body and a heat conduction oil pipe in a mining safety dry-type transformer according to the present invention;

fig. 4 is a schematic structural diagram of a mounting frame in a mining safety dry-type transformer according to the present invention;

fig. 5 is a schematic structural diagram of a connection relationship between a mounting frame and a protection board in a mining safety dry-type transformer according to the present invention;

FIG. 6 is an enlarged view at A in FIG. 5;

fig. 7 is a schematic structural diagram of a connection relationship between a protecting plate and a push rod in a mining safety dry-type transformer;

fig. 8 is a schematic structural diagram of connection relation among an oil tank, a sliding column and a gear rod in the mining safety dry-type transformer.

In the figure: 1. a bottom plate; 2. a transformer body; 3. a protective assembly; 4. a buffer oil bag; 5. a heat conduction oil pipe; 6. a mounting frame; 7. a guard board; 8. a heat radiation fin; 9. a slideway; 10. a sliding frame; 11. a one-way bearing; 12. a rack; 13. a sleeve; 14. a push rod; 15. a one-way valve; 16. an oil tank; 17. a spool; 18. a toothed bar; 19. a rotating shaft; 20. blowing fan blades; 21. and a drive gear.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-3, a mining safety dry-type transformer comprises a base plate 1, wherein the base plate 1 is provided with:

the transformer body 2 is provided with the heat conduction oil pipe 5 for cooling the inside of the transformer body 2 on the transformer body 2, the inside of the heat conduction oil pipe 5 is filled with heat conduction medium, heat inside the transformer body 2 is led out through the flowing of the heat conduction medium, the heat dissipation of the transformer body 2 is facilitated, and the using effect of the transformer body 2 is improved.

Referring to fig. 1-3, the transformer body 2 is arranged in a closed manner, the closed transformer body 2 is more suitable for mining, the closed transformer body 2 can prevent flammable and explosive gas from being carried out inside the transformer body 2, the risk of explosion caused by igniting the flammable and explosive gas by an electric arc inside the transformer body 2 is reduced, the explosion-proof device has the advantage of explosion prevention, and the plurality of radiating fins 8 are arranged outside the transformer body 2, so that the radiating effect of the transformer body 2 is further improved.

Referring to fig. 1 to 3, the heat conduction oil pipes 5 are divided into two groups, and the heat conduction oil pipes 5 partially penetrate through the inside of the transformer body 2 to cool the insulation windings in the transformer body 2 respectively, so that cooling efficiency is improved.

The protection component 3, the protection component 3 includes that installing frame 6 and a plurality of slip set up in installing frame 6 backplate 7, and installing frame 6 sets up in the one side that transformer body 2 easily receives the ore striking, and backplate 7 adopts the steel, improves backplate 7 intensity, is equipped with reversing mechanism and is used for promoting the actuating mechanism that heat conduction medium circulated flow in the heat conduction oil pipe 5 on the backplate 7.

Referring to fig. 4-6, a plurality of equidistant slide ways 9 are provided on the inner side wall of the mounting frame 6, a slide frame 10 for supporting the guard plate 7 is slidably provided on the slide ways 9, and the slide frame 10 is rectangular and is used for driving the guard plate 7 to slide in the impacting direction of the mounting frame 6.

Referring to fig. 4-6, the distance between two adjacent guard plates 7 is greater than the height of the guard plates 7, so that the guard plates 7 can freely rotate around the shaft body, after the guard plates 7 are impacted, the guard plates 7 can be overturned through the reversing mechanism, impact is resisted by different surfaces, the effect of improving the durability of the guard plates 7 is achieved, and the safety of the transformer body 2 is improved.

Referring to fig. 5-7, the reversing mechanism comprises a shaft body fixedly arranged at two ends of a guard plate 7 and rotationally connected with a sliding frame 10, when ore impacts the guard plate 7, the guard plate 7 is stressed to drive the sliding frame 10 to move along a slideway 9, a one-way bearing 11 is fixedly arranged on the outer side wall of the shaft body, a gear is arranged on the outer peripheral surface of the one-way bearing 11, a rack 12 meshed with the gear is arranged on the inner side wall of the slideway 9, when the gear contacts with the rack 12, the rotation of the one-way bearing 11 is reversely stressed, when the sliding frame 10 is reset, the gear rolls along the rack 12, at the moment, the one-way bearing 11 is stressed to rotate, so that the gear rotates 180 degrees, and the shaft body also rotates 180 degrees to drive the guard plate 7 to overturn an impact surface so as to receive the next impact by using the opposite surface, and the purpose of counteracting the deformation generated by the impact is achieved.

The damping is arranged on the outer side wall of the shaft body, so that the shaft body and the sliding frame 10 keep the original state under the action of no external force, and the position deviation of the guard plate 7 caused by the rotation of the guard plate 7 is effectively reduced.

Referring to fig. 1-3, the driving mechanism comprises a sleeve 13 arranged on the heat conducting oil pipe 5 and communicated with the inside of the heat conducting oil pipe 5, a push rod 14 which is in sealed sliding sleeve joint with the sleeve 13 is fixedly arranged on the outer side wall of the sliding frame 10, and when the guard plate 7 is impacted to move, the push rod 14 is driven to move, so that the oil pressure in the heat conducting oil pipe 5 is increased, and the heat conducting medium in the heat conducting oil pipe 5 is pushed to flow, so that the cooling effect of the heat conducting medium is better.

Referring to fig. 2, a plurality of sleeves 13 are provided, the sleeves 13 are arranged corresponding to the guard plates 7, the protection range is improved, and the plurality of sleeves 13 are distributed in a linear array along the height direction of the heat conduction oil pipe 5.

The buffer oil bag 4, the buffer oil bag 4 and the heat conduction oil pipe 5 are communicated to form a complete fluid loop, the buffer oil bag 4 is made of elastic materials, when the push rod 14 moves to increase the oil pressure in the heat conduction oil pipe 5, the buffer oil bag 4 is inflated to play a role in absorbing the impact force of the guard plate 7, after the ore falls down kinetic energy, the buffer oil bag 4 is restored to push the push rod 14 to reset, and the guard plate 7 is returned to the initial position.

Referring to fig. 2, the two groups of heat conducting oil pipes 5 are provided with one-way valves 15, so that the heat conducting medium in the heat conducting oil pipes 5 can only flow unidirectionally, and in the process of expanding and reducing the buffer oil bag 4, the heat conducting medium flows unidirectionally, the fluidity of the heat conducting medium is improved, the temperature of the transformer body 2 is conveniently reduced, and the safety of the transformer body 2 is improved.

Example two

Referring to fig. 8, the buffer oil bag 4 may be an oil tank 16, a sliding hole is formed in the oil tank 16, a sliding column 17 is provided in the sliding hole in a sealing sliding manner, when the push rod 14 moves to increase the pressure inside the heat conduction oil pipe 5, the sliding column 17 moves upwards under the action of pressure, a buffer spring is provided between the sliding column 17 and the inner bottom of the oil tank 16, the buffer spring can buffer the ore impact force, and is convenient for resetting the sliding column 17, a toothed bar 18 is fixedly provided at the top of the sliding column 17, the sliding column 17 moves upwards to enable the toothed bar 18 to move upwards, a rotating shaft 19 is rotatably provided at one side of the transformer body 2 close to the oil tank 16, a plurality of blowing fan blades 20 are provided at the outer circumferential surface of the rotating shaft 19, a driving gear 21 meshed with the toothed bar 18 is fixedly provided at the end of the rotating shaft 19, the driving gear 21 is driven to rotate when the toothed bar 18 moves upwards, the rotating shaft 9 is driven to rotate, the rotating shaft 19 drives the blowing fan blades 20 to rotate, and generates air flow, and the air flow is blown to the transformer body 2, and the cooling effect is further improved.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a mining safe type dry-type transformer, includes bottom plate (1), its characterized in that is equipped with on bottom plate (1):

the transformer comprises a transformer body (2), wherein a heat conduction oil pipe (5) for cooling the inside of the transformer body (2) is arranged on the transformer body (2);

the protection assembly (3) comprises a mounting frame (6) and a plurality of guard plates (7) which are arranged in the mounting frame (6) in a sliding manner, wherein a reversing mechanism and a driving mechanism for promoting circulation flow of a heat conducting medium in the heat conducting oil pipe (5) are arranged on the guard plates (7);

the mounting frame (6) is provided with a plurality of slide ways (9) which are equidistantly arranged on the inner side wall of the mounting frame (6), a slide frame (10) used for supporting the guard plate (7) is arranged in the slide ways (9) in a sliding mode, the reversing mechanism comprises shaft bodies which are fixedly arranged at two ends of the guard plate (7) and are rotationally connected with the slide frame (10), one-way bearings (11) are fixedly arranged on the outer side wall of the shaft bodies, gears are arranged on the outer peripheral surface of the one-way bearings (11), racks (12) meshed with the gears are arranged on the inner side wall of the slide ways (9), and when the gears roll along the racks (12), the gears rotate for 180 degrees;

the buffer oil bag (4), the buffer oil bag (4) is connected with the heat conduction oil pipe (5) to form a complete fluid loop, and the buffer oil bag (4) is made of elastic materials.

2. The mining safety dry-type transformer according to claim 1, wherein the transformer body (2) is arranged in a closed type of a shell, and a plurality of radiating fins (8) are arranged outside the transformer body (2).

3. A mining safety dry transformer according to claim 1, characterized in that the heat conducting oil pipes (5) are divided into two groups, and the heat conducting oil pipes (5) partly penetrate the inside of the transformer body (2).

4. The mining safety dry-type transformer according to claim 1, wherein the outer side wall of the shaft body is provided with a damper, so that the shaft body and the sliding frame (10) are kept in the original state under the action of no external force.

5. The mining safety dry-type transformer according to claim 1, wherein the driving mechanism comprises a sleeve (13) arranged on the heat conduction oil pipe (5) and communicated with the inside of the heat conduction oil pipe (5), and a push rod (14) which is in sealing sliding sleeving connection with the sleeve (13) is fixedly arranged on the outer side wall of the sliding frame (10).

6. A mining safety dry transformer according to claim 5, characterized in that the number of bushings (13) is plural, and that the bushings (13) are distributed in a linear array along the height direction of the heat conducting oil pipe (5).

7. The mining safety dry-type transformer according to claim 1, wherein the two groups of heat conducting oil pipes (5) are provided with one-way valves (15) respectively, so that heat conducting media in the heat conducting oil pipes (5) can only flow unidirectionally.

8. The mining safety dry type transformer according to claim 1, wherein the buffer oil bag (4) can be an oil tank (16), a sliding hole is formed in the oil tank (16), a sliding column (17) is arranged in the sliding hole in a sealing sliding mode, a buffer spring is arranged between the sliding column (17) and the inner bottom of the oil tank (16), a toothed bar (18) is fixedly arranged at the top of the sliding column (17), a rotating shaft (19) is rotatably arranged on one side, close to the oil tank (16), of the transformer body (2), a plurality of blowing fan blades (20) are arranged on the outer circumferential surface of the rotating shaft (19), and a driving gear (21) meshed with the toothed bar (18) is fixedly arranged at the end of the rotating shaft (19).