CN216054177U - Mining explosion-proof dry-type transformer - Google Patents

Abstract

The utility model discloses a mining flame-proof dry-type transformer, which comprises a flame-proof shell, wherein a heat dissipation mounting seat is arranged at the bottom of an inner cavity of the flame-proof shell, a heat-conducting thin plate is fixedly arranged in the inner cavity of the flame-proof shell, a plurality of second heat-dissipation fins are uniformly arranged on the outer wall of the heat-conducting thin plate, heat-conducting sand is filled between the flame-proof shell and the heat-conducting thin plate, a plurality of heat-dissipation windows are uniformly arranged on the side wall of the flame-proof shell, a mounting frame is fixedly arranged in each heat-dissipation window, a supporting breathable membrane plate is arranged on one side, close to the heat-conducting sand, of the mounting frame, a mounting plate is arranged on the inner side of the mounting frame, and a heat-dissipation fan is arranged on the mounting plate. Has the advantages that: the mine explosion-proof dry-type transformer is provided with the heat dissipation mounting seat and the heat conducting thin plate, so that the heat dissipation effect of the mine explosion-proof dry-type transformer can be improved, the explosion-proof effect of the mine explosion-proof dry-type transformer cannot be influenced, and the main body of the explosion-proof dry-type transformer can be subjected to fire extinguishing operation in the first time, so that the possibility of more serious accidents caused by spread of fire can be reduced.

Description

Mining explosion-proof dry-type transformer

Technical Field

The utility model relates to the technical field of dry-type transformers, in particular to a mining explosion-proof dry-type transformer.

Background

The dry-type transformer is a transformer with an iron core and windings which are not immersed in insulating oil, and the dry-type transformer has the advantages of strong short-circuit resistance, small maintenance workload, high operation efficiency, small volume, low noise and the like, is commonly used in places with high performance requirements on fire prevention, explosion prevention and the like, is particularly suitable for mining electric power facilities such as mine exploitation and the like, and is mostly used at present.

The traditional mining flame-proof dry type transformer needs to work under a mine containing combustible dust, and in order to prevent electric arc sparks generated when a dry type transformer main body works from igniting and igniting the combustible dust, a high-strength and high-tightness flame-proof shell is mostly adopted to protect the dry type transformer main body, but the flame-proof shell has extremely poor heat dissipation performance, so that the working dry type transformer main body is overheated to cause faults and even equipment damage, so that the current market needs a mining flame-proof dry type transformer which has both the flame-proof performance and the heat dissipation performance, in addition, once the explosion occurs in the inner cavity of the flame-proof shell of the traditional mining flame-proof dry type transformer, not only explosion products generated by explosion easily penetrate the flame-proof shell to cause danger, but also workers can not extinguish the fired dry type transformer main body in the first time, so that the fire is easily spread, causing more serious accidents.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a mining explosion-proof dry-type transformer, which has the advantages that the heat dissipation effect of the dry-type transformer body during working is greatly improved on the premise of ensuring the explosion-proof effect, the impact force of an explosion-proof product in an explosion-proof shell can be reduced by utilizing heat-conducting sand, the dry-type transformer body on fire can be extinguished in time by utilizing the heat-conducting sand, the possibility of more serious accidents is reduced, and the problems in the background art are further solved.

(II) technical scheme

In order to realize the advantages that on the premise of ensuring the explosion-proof effect, the heat dissipation effect of the dry-type transformer main body during working is greatly improved, the impact force of an explosion product in the explosion-proof shell can be reduced by utilizing the heat-conducting sand, the ignition dry-type transformer main body can be put out in time by utilizing the heat-conducting sand, and the possibility of more serious accidents is reduced, the specific technical scheme adopted by the utility model is as follows: the utility model provides a mining flame-proof type dry-type transformer, includes the flame proof shell, the heat dissipation mount pad is installed to flame proof shell inner chamber bottom, and installs the dry-type transformer main part on the heat dissipation mount pad, flame proof shell inner chamber fixed mounting has the heat conduction sheet metal, and the heat conduction sheet metal outer wall evenly installs a plurality of second heat radiation fin, it has heat conduction sand to fill between flame proof shell and the heat conduction sheet metal, a plurality of heat dissipation window has evenly been seted up to flame proof shell lateral wall, and fixed mounting has the installing frame in the heat dissipation window to the installing frame is close to heat conduction sand one side and installs and support ventilative diaphragm plate, the inboard fixed mounting of installing frame has the mounting panel, and installs radiator fan on the mounting panel.

Furthermore, a water-cooling cavity is formed in the bottom plate of the flameproof shell, a cold water cooling bar is installed on the side wall of one side of the flameproof shell, a water outlet pipe is communicated between the cold water cooling bar and the water-cooling cavity, a circulating water pump is installed on the water outlet pipe, a water inlet pipe is communicated between the cold water cooling bar and the water-cooling cavity, and a plurality of first heat dissipation fins are evenly installed inside the heat dissipation installation seat located in the water-cooling cavity.

Furthermore, a junction box is installed at the top of the dry-type transformer main body, and a plurality of insulating flame-retardant wiring pipes are connected and installed on the junction box.

Furthermore, the insulating flame-retardant wiring tube penetrates through the flameproof shell and the top surface of the heat conducting thin plate.

Furthermore, a protective net is fixedly installed on the heat dissipation window.

Furthermore, the outer side of the heat dissipation window is provided with an explosion-proof plate fixedly installed on the side face of the explosion-proof shell.

Furthermore, a fixed bottom plate is fixedly arranged on the bottom surface of the explosion-proof shell.

(III) advantageous effects

Compared with the prior art, the utility model provides a mining explosion-proof dry-type transformer, which has the following beneficial effects:

(1) the utility model is provided with a heat dissipation mounting seat and a heat conducting thin plate, when in use, the heat generated by the dry type transformer main body during working is conducted to the heat dissipation mounting seat, because the heat dissipation mounting seat is evenly provided with a plurality of first heat dissipation fins in the water cooling cavity arranged in the bottom plate of the explosion-proof shell, the heat conducted to the heat dissipation mounting seat is further conducted to the cooling water in the water cooling cavity through the plurality of first heat dissipation fins, at the moment, a circulating water pump arranged on a water outlet pipe communicated with the water cooling cavity and a water cooling cold bar arranged on the outer wall of one side of the explosion-proof shell are started, the cooling water is circulated back and forth among the water cooling cavity, the water outlet pipe, the water cooling cold bar and a water inlet pipe, thereby the heat absorbed by the cooling water is dissipated to the outside of the explosion-proof shell, the working dry type transformer main body is cooled, and meanwhile, partial heat is still accumulated in the inner cavity of the explosion-proof shell, the temperature in the inner cavity of the flame-proof shell is raised, and the part of heat is transferred to the heat-conducting thin plate arranged in the inner cavity of the flame-proof shell, in addition, because the heat-conducting sand is filled between the flame-proof shell and the heat-conducting thin plate, and a plurality of second heat-radiating fins fixedly arranged on the outer wall of the heat-conducting thin plate are arranged in the heat-conducting sand, the heat in the inner cavity of the flame-proof shell can be quickly transferred into the heat-conducting sand through the heat-conducting thin plate and the second heat-radiating fins, meanwhile, a plurality of heat-radiating windows are uniformly arranged on the side wall of the flame-proof shell, a supporting breathable membrane plate is arranged on a mounting frame arranged in the heat-radiating windows, and a heat-radiating fan is arranged on the mounting plate arranged on the mounting frame, when the heat-radiating fan is started, the air flow near the heat-conducting sand supported by the supporting breathable membrane plate can be accelerated, so as to cool the heat-conducting sand is small in specific heat capacity and quick in heat conduction, the heat in the inner cavity of the flame-proof shell can be quickly radiated out, therefore, the temperature of the dry-type transformer main body during working is further reduced, the heat dissipation effect of the mining explosion-proof dry-type transformer is improved, and the explosion-proof effect of the mining explosion-proof dry-type transformer is not influenced.

(2) When the main body of the dry-type transformer is subjected to deflagration, explosion products generated by explosion can impact and break the heat-conducting thin plate and enter the heat-conducting sand, therefore, the impact force of the explosive can be greatly absorbed by utilizing the heat-conducting sand and the heat-conducting thin plate, the possibility that the explosive passes through the flameproof shell by impact is reduced, because the protective net and the flameproof plate are arranged outside the heat-radiating window, so that the explosion products can be blocked, in addition, the dry type transformer main body is connected with the external circuit through the junction box and the insulation flame-retardant wiring tube, therefore, accidents caused by the fact that open fire overflows through the connecting lines can be prevented, and moreover, as the heat conduction thin plate is damaged by explosion products, the heat conduction sand falls on the dry type transformer main body under the action of gravity, the dry type transformer main body can be subjected to fire extinguishing operation in the first time, and the possibility that the fire spreads to cause more serious accidents can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a mining explosion-proof dry-type transformer according to an embodiment of the utility model;

FIG. 2 is a side view of an external appearance of a mining explosion-proof dry-type transformer according to an embodiment of the utility model;

FIG. 3 is an enlarged view at A of FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a perspective view of an installation frame of a mining explosion-proof dry-type transformer according to an embodiment of the utility model.

In the figure:

1. fixing the bottom plate; 2. an explosion-proof shell; 3. a water-cooled cavity; 4. a heat dissipation mounting base; 5. a first heat radiation fin; 6. a dry-type transformer main body; 7. heat conducting sand; 8. an explosion-proof plate; 9. a heat conductive sheet; 10. an insulating flame-retardant junction tube; 11. a junction box; 12. a second heat radiation fin; 13. water cooling and cold discharging; 14. a water circulating pump; 15. a water outlet pipe; 16. a water inlet pipe; 17. a heat dissipation window; 18. installing a frame; 19. a protective net; 20. mounting a plate; 21. a heat radiation fan; 22. supporting the breathable membrane plate.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to the embodiment of the utility model, the utility model provides a mining explosion-proof dry-type transformer.

The utility model is further explained by combining the attached drawings and the detailed embodiment, as shown in fig. 1-4, the mining flame-proof dry-type transformer according to the embodiment of the utility model comprises a flame-proof shell 2, a heat dissipation mounting seat 4 is mounted at the bottom of the inner cavity of the flame-proof shell 2, a dry-type transformer main body 6 is mounted on the heat dissipation mounting seat 4, a heat conducting thin plate 9 is fixedly mounted in the inner cavity of the flame-proof shell 2, a plurality of second heat dissipation fins 12 are uniformly mounted on the outer wall of the heat conducting thin plate 9, heat conducting sand 7 is filled between the flame-proof shell and the heat conducting thin plate 9, a plurality of heat dissipation windows 17 are uniformly formed on the side wall of the flame-proof shell 2, a mounting frame 18 is fixedly mounted in each heat dissipation window 17, a supporting breathable membrane plate 22 is mounted on one side of the mounting frame 18 close to the heat conducting sand 7, a mounting plate 20 is fixedly mounted on the inner side of the mounting frame 18, and a heat dissipation fan 21 is mounted on the mounting plate 20, so that the heat conducting sand 7 is utilized, the heat in the middle of the inner cavity of the explosion-proof shell 2 can be quickly radiated by the characteristic of quick heat conduction, so that the heat radiation effect of the mining explosion-proof dry-type transformer is improved, the explosion-proof effect of the mining explosion-proof dry-type transformer cannot be influenced, the fire extinguishing operation can be carried out when the main body 6 of the dry-type transformer is subjected to deflagration in the first time, and the possibility of more serious accidents caused by spread of fire can be reduced.

In one embodiment, the water-cooling cavity 3 is formed in the bottom plate of the flameproof housing 2, the cold water cooling bar is installed on the side wall of one side of the flameproof housing 2, the water-cooling bar 13 is communicated with the water-cooling cavity 3 through the water outlet pipe 15, the circulating water pump 14 is installed on the water outlet pipe 15, the water inlet pipe 16 is communicated between the water-cooling bar 13 and the water-cooling cavity 3, the first radiating fins 5 are evenly installed in the part, located in the water-cooling cavity 3, of the radiating installation seat 4, the dry-type transformer main body 6 which works through water cooling is cooled, and therefore the radiating effect of the mining flameproof dry-type transformer is improved.

In one embodiment, a junction box 11 is installed on the top of the dry-type transformer main body 6, and a plurality of insulating flame-retardant junction tubes 10 are connected and installed on the junction box 11, so that the dry-type transformer main body has the function of preventing accidents caused by the overflow of open fire through the junction lines.

In one embodiment, the insulating flame-retardant wiring tube 10 penetrates through the top surfaces of the flameproof shell 2 and the heat conducting thin plate 9, and the effect of preventing accidents caused by the fact that open fire overflows through a connecting wire is achieved.

In one embodiment, a protective screen 19 is fixedly installed on the heat dissipation window 17, and functions to block explosion products and prevent a user from accidentally touching the heat dissipation fan 21.

In one embodiment, the explosion-proof plate 8 fixedly mounted on the side surface of the explosion-proof shell 2 is arranged outside the heat dissipation window 17, and the effect of preventing explosive products from flying out of a distance through the heat dissipation window 17 is achieved.

In one embodiment, the bottom surface of the flameproof housing 2 is fixedly provided with the fixed bottom plate 1, so that the effect of fixedly mounting the mining flameproof dry-type transformer is achieved.

The working principle is as follows: the dry-type transformer is provided with the heat dissipation mounting seat 4 and the heat conducting thin plate 9, when in use, heat generated by the dry-type transformer main body 6 during working is conducted to the heat dissipation mounting seat 4, because the heat dissipation mounting seat 4 is uniformly provided with a plurality of first heat dissipation fins 5 in the water-cooling cavity 3 arranged in the bottom plate of the explosion-proof shell 2, the heat conducted to the heat dissipation mounting seat 4 is further conducted to cooling water in the water-cooling cavity 3 through the plurality of first heat dissipation fins 5, at the moment, a circulating water pump 14 arranged on a water outlet pipe 15 communicated with the water-cooling cavity 3 and a water-cooling cold bar 13 arranged on the outer wall of one side of the explosion-proof shell 2 are started, the cooling water is circulated back and forth among the water-cooling cavity 3, the water outlet pipe 15, the water-cooling cold bar 13 and a water inlet pipe 16, so that the heat absorbed by the cooling water is dissipated to the outside of the explosion-proof shell 2, the working dry-type transformer main body 6 is cooled, and simultaneously, still some heat is accumulated in the inner cavity of the flameproof housing 2, so that the temperature in the inner cavity of the flameproof housing 2 rises, and the heat is transferred to the heat conducting sheet 9 arranged in the inner cavity of the flameproof housing 2, in addition, because the heat conducting sand 7 is filled between the flameproof housing 2 and the heat conducting sheet 9, and a plurality of second heat dissipation fins 12 fixedly arranged on the outer wall of the heat conducting sheet 9 are arranged in the heat conducting sand 7, the heat in the inner cavity of the flameproof housing 2 can be quickly transferred into the heat conducting sand 7 through the heat conducting sheet 9 and the second heat dissipation fins 12, meanwhile, a plurality of heat dissipation windows 17 are uniformly arranged on the side wall of the flameproof housing 2, a supporting breathable membrane 22 is arranged on a mounting frame 18 arranged in the heat dissipation windows 17, a cooling fan 21 is arranged on a mounting plate 20 arranged on the mounting frame 18, and when the cooling fan 21 is started, the air flow near the heat conducting sand 7 supported by the supporting breathable membrane 22 can be accelerated, therefore, the heat conducting sand 7 is cooled, and because the heat conducting sand 7 has small specific heat capacity and fast heat conduction, the heat in the inner cavity of the explosion-proof shell 2 can be fast radiated, the temperature of the dry-type transformer main body 6 during working is further reduced, the heat radiating effect of the mining explosion-proof dry-type transformer is improved, and the explosion-proof effect of the mining explosion-proof dry-type transformer is not influenced, in addition, the utility model is provided with the heat conducting sand 7 and the explosion-proof plate 8, when the dry-type transformer main body 6 explodes, the explosion products generated by explosion can impact and break the heat conducting thin plate 9 and enter the heat conducting sand 7, so the impact force of the explosion products can be greatly absorbed by the heat conducting sand 7 and the heat conducting thin plate 9, the possibility that the explosion products impact and pass through the explosion-proof shell 2 is reduced, because the protective screen 19 and the explosion-proof plate 8 are arranged outside the heat radiating window 17, the explosion products can be blocked, in addition, the dry-type transformer main body 6 is connected with an external circuit through the junction box 11 and the insulating flame-retardant junction tube 10, therefore, accidents caused by the fact that open fire overflows through connecting wires can be prevented, and due to the fact that the heat conducting thin plates 9 are damaged by explosion products, the heat conducting sand 7 falls on the dry type transformer main body 6 under the action of gravity, fire extinguishing operation can be conducted on the dry type transformer main body 6 at the first time, and therefore the possibility that the fire spreads to cause more serious accidents can be reduced.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. A mining flame-proof dry-type transformer comprises a flame-proof shell (2) and is characterized in that a heat dissipation mounting seat (4) is mounted at the bottom of an inner cavity of the flame-proof shell (2), a dry-type transformer main body (6) is mounted on the heat dissipation mounting seat (4), a heat-conducting thin plate (9) is fixedly mounted in the inner cavity of the flame-proof shell (2), a plurality of second heat-radiating fins (12) are uniformly mounted on the outer wall of the heat-conducting thin plate (9), heat-conducting sand (7) is filled between the flame-proof shell and the heat-conducting thin plate (9), a plurality of heat-radiating windows (17) are uniformly formed in the side wall of the flame-proof shell (2), a mounting frame (18) is fixedly mounted in each heat-radiating window (17), a supporting breathable membrane plate (22) is mounted on one side, close to the heat-conducting sand (7), and a mounting plate (20) is fixedly mounted on the inner side of the mounting frame (18), and a heat radiation fan (21) is arranged on the mounting plate (20).

2. The mining flame-proof dry-type transformer according to claim 1, characterized in that a water cooling cavity (3) is formed in a bottom plate of the flame-proof shell (2), a cold water cooling bar is installed on a side wall of one side of the flame-proof shell (2), a water outlet pipe (15) is communicated between the cold water cooling bar (13) and the water cooling cavity (3), a circulating water pump (14) is installed on the water outlet pipe (15), a water inlet pipe (16) is communicated between the cold water cooling bar (13) and the water cooling cavity (3), and a plurality of first heat dissipation fins (5) are uniformly installed inside the heat dissipation installation base (4) located in the water cooling cavity (3).

3. A mining flame-proof type dry transformer according to claim 1, characterized in that a junction box (11) is installed on the top of the dry transformer main body (6), and a plurality of insulating flame-retardant junction tubes (10) are connected and installed on the junction box (11).

4. A mining flameproof dry-type transformer according to claim 3, characterized in that the insulating flame-retardant wiring tube (10) penetrates through the flameproof housing (2) and the top surface of the heat-conducting thin plate (9).

5. The mining flame-proof dry-type transformer according to claim 1, characterized in that a protective screen (19) is fixedly installed on the heat dissipation window (17).

6. A mining flameproof dry-type transformer according to claim 1, characterized in that the outside of the heat dissipation window (17) is provided with a flameproof plate (8) fixedly mounted on the side of the flameproof housing (2).

7. A mining flame-proof dry-type transformer according to claim 1, characterized in that a fixed bottom plate (1) is fixedly installed on the bottom surface of the flame-proof enclosure (2).

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