Efficient heat dissipation type mining explosion-proof dry-type transformer

Abstract

The utility model discloses an efficient heat dissipation type mining explosion-proof dry-type transformer, and relates to the technical field of mining explosion-proof dry-type transformers, the efficient heat dissipation type mining explosion-proof dry-type transformer comprises a bottom shell, the top end of the bottom shell is fixedly provided with a dome cover through connecting bolts, the top end of the dome cover is fixedly connected with a plurality of heat dissipation fins, the middle parts of the heat dissipation fins are provided with transverse pipes in a penetrating manner, and the transverse pipes are fixedly connected with the dome cover through connecting bolts. Bent pipes penetrate through the two side walls of the transverse pipe correspondingly, a plurality of air spraying holes are formed in the side walls of the bent pipes, an air pump is fixedly installed on one side of the top end of the dome cover, and internal thread cylinders are fixedly connected to the two corners of the bottoms of the two side walls of the bottom shell correspondingly. According to the transformer shell, a series of structures are arranged to reduce coal ash covering the heat dissipation fins, so that the adverse effect of the covering coal ash on the heat dissipation efficiency of the heat dissipation fins is reduced, the heat dissipation efficiency of the transformer shell is improved, the probability that gaps of connecting bolts exceed a specified value is reduced, and the service life of the transformer shell is prolonged. Therefore, the probability that the transformer shell loses explosion resistance and explosion suppression performance is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof dry-type transformers for mining, specifically a high-efficiency heat dissipation type explosion-proof dry-type transformer for mining. Background Technology

[0002] Mining explosion-proof dry-type transformers are mainly used in mines where there is always an explosion hazard. They are mostly made in dry type, can withstand greater internal pressure, and have better explosion-proof capabilities. They are specifically designed to supply power to electric drills, lighting, and signaling equipment, and are often combined with explosion-proof switch boxes to form explosion-proof mobile substations.

[0003] Existing explosion-proof dry-type transformers for mining are typically used underground, and these transformers usually rely on heat dissipation fins on their outer casing for cooling. Since a large amount of dust is generated in mines, this dust easily adheres to the heat dissipation fins. If the dust covering the fins is not removed in time, it can negatively impact the transformer's heat dissipation. Furthermore, existing explosion-proof dry-type transformers for mining are usually assembled using connecting bolts according to explosion-proof requirements. However, due to the high humidity underground, the explosion-proof joint surfaces are prone to severe corrosion, causing the gaps between the connecting bolts to exceed the specified values. This makes the transformer casing more susceptible to losing its explosion-proof and explosion-proof properties. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency heat dissipation type explosion-proof dry-type transformer for mining, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency heat dissipation type explosion-proof dry-type transformer for mining, comprising a bottom shell, a dome cover fixedly installed at the top of the bottom shell by connecting bolts, multiple heat dissipation fins fixedly connected to the top of the dome cover, a horizontal tube penetrating through the middle of the heat dissipation fins, bent tubes penetrating both sides of the horizontal tube, and several air vents opened on the side walls of the bent tubes, an air pump fixedly installed on one side of the top of the dome cover, internally threaded cylinders fixedly connected to the two corners of the bottom of both sides of the bottom shell, fastening screws being connected to the internally threaded cylinders, vertical plates fixedly connected to the four corners of the bottom of the dome cover, and locking blocks fixedly connected to the four corners of the bottom of the inner side of the bottom shell.

[0006] Preferably, an inlet pipe and an outlet pipe are respectively passed through the two side walls of the bottom shell, and the two side walls of the inlet pipe and the outlet pipe are fixedly installed with a cover by connecting bolts.

[0007] Preferably, a heat-conducting plate is fixedly connected to the top of the inner side of the dome cover, and the heat-conducting plate is fixedly connected to the heat dissipation fins.

[0008] Preferably, a crossbar passes through both ends of the heat dissipation fins, and the crossbar is fixedly connected to the bent pipe.

[0009] Preferably, the output end of the air pump is engaged with one end of the horizontal tube, and a cover is engaged at the end of the horizontal tube away from the air pump.

[0010] Preferably, the bottom of the vertical plate is provided with a screw hole, and the fastening screw is movably threaded to the vertical plate through the screw hole.

[0011] Preferably, the vertical plate is movably connected to the locking block, and the fastening screw is movably connected to the locking block through the internal threaded cylinder and the vertical plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This high-efficiency heat-dissipating explosion-proof dry-type transformer for mining uses horizontal pipes, bent pipes, air jet holes and air pumps to allow the coal ash covering the heat dissipation fins to be blown off the surface of the heat dissipation fins in a timely manner through the blowing mechanism composed of the above-mentioned structures, so as to reduce the coal ash covering the heat dissipation fins and thus reduce the adverse effects of the coal ash covering the heat dissipation fins on the heat dissipation efficiency, which is conducive to improving the heat dissipation efficiency of the transformer shell.

[0014] 2. This high-efficiency heat dissipation type explosion-proof dry-type transformer for mining uses a vertical plate, fastening screws, internal threaded cylinder and locking block. After the top cover of the transformer is connected to the bottom shell with connecting bolts, the locking mechanism composed of the above structure can lock the top cover and the bottom shell together again. This reduces the probability that the gap of the connecting bolts exceeds the specified value, thereby reducing the probability that the transformer shell will lose its explosion resistance and explosion-proof performance. Attached Figure Description

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the jet hole and heat-conducting plate structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fastening screw and locking block structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the horizontal tube and the bent tube structure of this utility model.

[0019] In the diagram: 1. Cover; 2. Inlet pipe; 3. Bottom shell; 4. Fastening screw; 5. Internal threaded cylinder; 6. Outlet pipe; 7. Dome cover; 8. Horizontal bar; 9. Heat dissipation fins; 10. Bend; 11. Horizontal pipe; 12. Air pump; 13. Air jet; 14. Heat conduction plate; 15. Vertical plate; 16. Connecting bolt; 17. Screw hole; 18. Locking block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, this embodiment of a high-efficiency heat-dissipating explosion-proof dry-type transformer for mining includes a bottom shell 3. A dome cover 7 is fixedly installed on the top of the bottom shell 3 by connecting bolts 16. Multiple heat dissipation fins 9 are fixedly connected to the top of the dome cover 7. A horizontal pipe 11 passes through the middle of the heat dissipation fins 9. A bent pipe 10 passes through both sides of the horizontal pipe 11. Several air vents 13 are opened on the side walls of the bent pipe 10. An air pump 12 is fixedly installed on one side of the top of the dome cover 7. An internally threaded cylinder 5 is fixedly connected to the two corners of the bottom of both sides of the bottom shell 3. A fastening screw 4 is connected to the internal threaded cylinder 5. Vertical plates 15 are fixedly connected to the four corners of the bottom of the dome cover 7. A locking block 18 is fixedly connected to the four corners of the bottom of the inner side of the bottom shell 3.

[0024] Specifically, the bottom shell 3 is the outer casing of the transformer, and internally it also houses components such as the iron core to ensure the normal operation of the dry-type transformer. The top of the inner side of the dome cover 7 is an arc surface, making the middle of the dome cover higher than the sides, which is more conducive to the concentration of heat inside the transformer within the dome cover 7. This allows the heat to be absorbed by the heat-conducting fins 14 on the inner side of the dome cover 7 and conducted to the outside of the transformer through the heat dissipation fins 9. The function of the horizontal pipe 11 is to allow the high-speed airflow blown by the air pump 12 to blow towards the heat dissipation fins 9 along a predetermined route. The function of the bent pipe 10 is to divert the high-speed airflow within the horizontal pipe 11, and the inner diameter of the bent pipe 10 is smaller than that of the horizontal pipe 11, so that the high-speed airflow can accelerate towards the surface of the heat dissipation fins 9, thereby helping to blow away the coal ash covering the surface of the heat dissipation fins 9 and reducing the adverse effects of coal ash on the heat dissipation of the heat dissipation fins 9. The jet nozzle 13 is positioned directly opposite the sidewall of the heat dissipation fins 9, allowing the airflow from the jet nozzle 13 to reach the sidewall of the heat dissipation fins 9. The air pump 12 introduces high-speed airflow into the horizontal pipe 11, allowing the high-speed airflow in the horizontal pipe 11 to be directed into the bend pipe 10 connected to it. The internal threaded cylinder 5 allows the fastening screw 4 to extend into the bottom shell 3, while maintaining the connection between the fastening screw 4 and the bottom shell 3. The vertical plate 15 allows the dome cover 7 to be connected to the bottom shell 3 for a secondary connection. The locking block 18 limits the position of the vertical plate 15 within the bottom shell 3 and also facilitates the fastening screw 4 to pass through the screw hole 17 on the vertical plate 15, thereby achieving a secondary locking connection between the dome cover 7 and the bottom shell 3 through the fastening screw 4, reducing the probability of the transformer shell losing its explosion-proof and explosion-proof properties.

[0025] Furthermore, the two side walls of the bottom shell 3 are respectively connected by an inlet pipe 2 and an outlet pipe 6. Both side walls of the inlet pipe 2 and the outlet pipe 6 are fixedly installed with a cover 1 by connecting bolts 16. The inlet pipe 2 and the outlet pipe 6 enable the transformer to be connected to the electrical equipment in the mine through the circuit to realize the function of the transformer.

[0026] Furthermore, a heat-conducting plate 14 is fixedly connected to the top of the inner side of the dome cover 7. The heat-conducting plate 14 is fixedly connected to the heat dissipation fins 9. The heat-conducting plate 14 is in contact with the inner top surface of the dome cover 7, so that the heat accumulated in the dome cover 7 can be absorbed by the heat-conducting plate 14 in time and conducted to the heat dissipation fins 9.

[0027] Furthermore, a crossbar 8 passes through both ends of the heat dissipation fin 9. The crossbar 8 is fixedly connected to the bent pipe 10. The function of the crossbar 8 is to reinforce both ends of the heat dissipation fin 9 to prevent the heat dissipation fin 9 from deforming and affecting the heat dissipation efficiency.

[0028] Furthermore, the output end of the air pump 12 is engaged with one end of the horizontal tube 11, and the end of the horizontal tube 11 away from the air pump 12 is engaged with a cover. After the air pump 12 is connected to the external power supply, it can generate high-speed airflow, which allows high-speed airflow to enter the interior of the horizontal tube 11. The closure of the end of the horizontal tube 11 facilitates the high-speed airflow to be ejected from the jet hole 13 of the bend tube 10, thus avoiding the waste of high-speed airflow.

[0029] Furthermore, a screw hole 17 is provided at the bottom of the vertical plate 15. The fastening screw 4 is connected to the vertical plate 15 by a threaded connection through the screw hole 17. The function of the screw hole 17 is to enable the fastening screw 4 to be threadedly connected to the vertical plate 15, thereby realizing the secondary locking connection between the vertical plate 15 and the bottom shell 3 through the fastening screw 4.

[0030] Furthermore, the vertical plate 15 is movably connected to the locking block 18, and the fastening screw 4 is movably connected to the vertical plate 15 and the locking block 18 through the internal threaded cylinder 5. The function of the locking block 18 is to limit the vertical plate 15 and at the same time to limit the end of the fastening screw 4, so that the operator can tighten the fastening screw 4.

[0031] The usage method of this embodiment is as follows: Before using this high-efficiency heat dissipation type explosion-proof dry-type transformer for mining, the transformer needs to be assembled and fixed first. When assembling the dome cover 7 with the outer shell, the dome cover 7 and the outer shell need to be locked together using connecting bolts 16, so that the screw hole 17 on the vertical plate 15 at the bottom of the dome cover 7 is between the locking block 18 and the internal threaded cylinder 5. Then, the fastening screw 4 can be screwed into the internal threaded cylinder 5, so that the fastening screw 4 enters the bottom shell 3 along the internal threaded cylinder 5, and then passes through the screw hole 17 at the bottom of the vertical plate 15, so that the vertical plate 15 and the fastening screw 4 are threadedly connected until the fastening screw 4 can no longer be turned. The end will touch the slot on the side wall of the card block 18, at which point the secondary locking and fixing of the dome cover 7 and the bottom shell 3 is completed. Then the transformer and the circuit can be connected. After the transformer has been used for a long time, coal ash will be covered on the heat dissipation fins 9. At this time, the air pump 12 can be started to introduce high-speed airflow into the horizontal pipe 11. Then the high-speed airflow will enter the bent pipe 10 through the horizontal pipe 11, and then spray from the jet hole 13 on the side wall of the bent pipe 10 to the side wall of the heat dissipation fins 9, so that the coal ash covering the heat dissipation fins 9 is blown away, and the heat absorbed by the heat conduction plate 14 on the inner top of the dome cover 7 can be quickly discharged through the heat dissipation fins 9.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency heat-dissipating explosion-proof dry-type transformer for mining, comprising a bottom shell (3), characterized in that: The top of the bottom shell (3) is fixedly installed with a dome cover (7) by connecting bolts (16). Multiple heat dissipation fins (9) are fixedly connected to the top of the dome cover (7). A horizontal tube (11) runs through the middle of the heat dissipation fins (9). A bent tube (10) runs through both sides of the horizontal tube (11). Several air jet holes (13) are opened on the side wall of the bent tube (10). An air pump (12) is fixedly installed on one side of the top of the dome cover (7). An internal threaded cylinder (5) is fixedly connected to the two corners of the bottom of both sides of the bottom shell (3). A fastening screw (4) is connected to the internal threaded cylinder (5). A vertical plate (15) is fixedly connected to the four corners of the bottom of the dome cover (7). A locking block (18) is fixedly connected to the four corners of the bottom of the inner side of the bottom shell (3).

2. The high-efficiency heat dissipation type explosion-proof dry-type transformer for mining as described in claim 1, characterized in that: The bottom shell (3) has an inlet pipe (2) and an outlet pipe (6) passing through its two side walls respectively. Both the inlet pipe (2) and the outlet pipe (6) have caps (1) fixedly installed on their side walls by connecting bolts (16).

3. The high-efficiency heat dissipation type explosion-proof dry-type transformer for mining as described in claim 1, characterized in that: A heat-conducting plate (14) is fixedly connected to the top of the inner side of the dome cover (7), and the heat-conducting plate (14) is fixedly connected to the heat dissipation fins (9).

4. The high-efficiency heat dissipation type explosion-proof dry-type transformer for mining as described in claim 1, characterized in that: Both ends of the heat dissipation fins (9) are connected by crossbars (8), which are fixedly connected to the bent pipe (10).

5. A high-efficiency heat-dissipating explosion-proof dry-type transformer for mining as described in claim 1, characterized in that: The output end of the air pump (12) is engaged with one end of the horizontal tube (11), and a cover is engaged at the end of the horizontal tube (11) away from the air pump (12).

6. The high-efficiency heat dissipation type explosion-proof dry-type transformer for mining as described in claim 1, characterized in that: The bottom of the vertical plate (15) is provided with a screw hole (17), and the fastening screw (4) is movably threadedly connected to the vertical plate (15) through the screw hole (17).

7. A high-efficiency heat-dissipating explosion-proof dry-type transformer for mining as described in claim 1, characterized in that: The vertical plate (15) is movably connected to the locking block (18), and the fastening screw (4) is movably connected to the locking block (18) through the internal threaded cylinder (5) and the vertical plate (15).

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