Mining transformer heat dissipation protective shell

Abstract

The utility model relates to the technical field of mining transformers, in particular to a heat dissipation protective shell of a mining transformer. The device comprises a protective outer shell, a heat dissipation inner shell is arranged in the protective outer shell, a space for containing a transformer is formed in the heat dissipation inner shell, a ventilation area is formed between the protective outer shell and the heat dissipation inner shell, and one or more heat dissipation fans are arranged in the ventilation area. According to the device, air can be continuously exchanged for the ventilation area, heat generated by the transformer is taken away, the transformer is wrapped by the heat dissipation inner shell, and dust carried in airflow is prevented from making contact with the transformer inside; the device is convenient to disassemble, and some parts of the device are convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of mining transformers, in particular to a heat dissipation protective shell of a mining transformer. Background Art

[0002] Mining flameproof dry-type transformers are suitable for use in underground coal mines and in environments where the surrounding medium contains methane mixed gas and coal dust, creating a risk of explosion. These transformers consist of an explosion-proof housing and a transformer body housed within it. The housing is made of a thermally conductive metal and is directly exposed to air. Through contact with air, it dissipates heat from the surrounding air, thereby dissipating heat generated by the transformer body.

[0003] The explosion-proof housing of existing flameproof dry-type mining transformers is made of structural steel. While this provides excellent explosion-proof and impact-resistant performance and is inexpensive, its thermal conductivity is limited. Since the transformer body is enclosed within the explosion-proof housing, the heat generated by the transformer body during operation can only be transferred to the explosion-proof housing through air. The explosion-proof housing then exchanges heat with the outside air, dissipating the heat from the mining flameproof dry-type transformer. This results in poor heat dissipation.

[0004] Chinese patent CN202321663283.9 discloses "A mining transformer", publication number CN220155314U. The device comprises a transformer housing, a supporting base, a transformer body, a circulation fan, and a filter panel. The supporting base is arranged on the bottom surface of the transformer housing, and the transformer body is fixed in the transformer housing. The front and rear ends of the transformer housing are provided with ventilation hoppers, and the side ends of the ventilation hoppers are provided with panel drawer holes. The filter panel is inserted into the panel drawer holes on the side of the ventilation hopper, and the front ventilation hopper is provided with a circulation fan. However, the device has some defects: due to the high dust content inside the mine, the airflow entering the transformer through the ventilation hopper carries a large amount of dust. Although a filter is provided on the side of the ventilation hopper, the filter cannot completely filter the dust, so the airflow still carries dust, which will damage the transformer inside in the long run. Utility Model Content

[0005] In order to solve the above problems of the prior art, the utility model provides a heat dissipation protective shell for a mining transformer, which can prevent dust carried in the air flow from contacting the transformer inside while dissipating heat for the transformer.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a heat dissipation protective shell for a mining transformer, comprising a protective outer shell, a heat dissipation inner shell arranged inside the protective outer shell, a space for accommodating the transformer formed inside the heat dissipation inner shell, a ventilation area formed between the protective outer shell and the heat dissipation inner shell, and one or more heat dissipation fans arranged in the ventilation area.

[0007] With the above structural design, the heat dissipation inner shell can transfer the heat generated by the transformer to the ventilation area. The cooling fan continuously exchanges air for the ventilation area to take away the heat generated by the transformer. The heat dissipation inner shell wraps the transformer to prevent dust carried in the airflow from contacting the transformer inside.

[0008] Preferably, the front and rear ends of the protective outer shell and the heat dissipation inner shell are open, the heat dissipation inner shell is slidably connected to the shell wall of the protective outer shell, and cover plates are provided at the front and rear ends of the protective outer shell, and ventilation holes corresponding to the ventilation areas are provided on the cover plates, and the heat dissipation fan is provided at the ventilation holes.

[0009] With the above structural design, the heat dissipation inner shell can be disassembled and cleaned, and the heat dissipation fan can also be easily repaired.

[0010] Preferably, the cover plate is detachably connected to a filter screen, the edge of the filter screen is fixedly connected to a fleece-side Velcro, the cover plate is fixedly connected to a hook-side Velcro, and the shape of the filter screen corresponds to the vent.

[0011] The above structural design makes it easy to replace and clean the filter.

[0012] Preferably, the heat dissipation inner shell is made of a heat-conducting graphite sheet, a support rod is fixedly connected to the heat dissipation inner shell, and a socket matching the support rod is provided on the cover plate.

[0013] The above structural design is adopted to improve the heat dissipation performance of the heat dissipation inner shell.

[0014] Preferably, bolts are passed through the edge of the cover plate, and internal threaded holes matching the bolts are provided on the protective shell.

[0015] The above structural design makes it easy to disassemble the cover.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1) This device can continuously exchange air for the ventilation area to take away the heat generated by the transformer, and the heat dissipation inner shell wraps the transformer to prevent the dust carried in the air flow from contacting the transformer inside.

[0018] 2) The device is easy to disassemble, making it easy to clean some of its components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model from the front;

[0021] Figure 3 This is a schematic diagram of the structure of the filter screen of the utility model; DETAILED DESCRIPTION

[0022] See also Figure 1 、 Figure 2 、 Figure 3 The utility model provides a technical solution: a heat dissipation protective shell for a mining transformer, comprising a protective outer shell 1, a heat dissipation inner shell 2 is arranged inside the protective outer shell 1, a space for accommodating the transformer is formed inside the heat dissipation inner shell 2, a ventilation area 3 is formed between the protective outer shell 1 and the heat dissipation inner shell 2, and one or more heat dissipation fans 4 are arranged in the ventilation area 3.

[0023] The protective outer shell 1 and the heat dissipation inner shell 2 are open at both the front and rear ends. The heat dissipation inner shell 2 is slidably connected to the shell wall of the protective outer shell 1. Cover plates 5 are provided at both the front and rear ends of the protective outer shell 1. Ventilation holes 51 corresponding to the ventilation area 3 are provided on the cover plates 5, and the heat dissipation fan 4 is provided at the ventilation holes 51.

[0024] A connecting column for supporting the vent 51 is provided at the vent 51 , and the connecting column is fixedly connected to the cover plate 5 .

[0025] The cooling fan 4 is electrically connected to a control switch, and the control switch is disposed on the cover plate 5 .

[0026] The lower end of the heat dissipation inner shell 2 is slidably connected to the lower shell wall of the protective outer shell 1. The heat dissipation inner shell 2 and the lower shell wall of the protective outer shell 1 form a space for accommodating the transformer. The heat dissipation fan 4 is arranged along the edge of the heat dissipation inner shell 2.

[0027] To save costs, a cooling fan is provided on the cover plate 5 at one end of the front and rear ends of the protective shell 1; to increase the air exchange rate in the ventilation area, a cooling fan is provided on the cover plate 5 at both ends of the front and rear ends of the protective shell 1.

[0028] The filter screen 6 is detachably connected to the cover plate 5 , the edge of the filter screen 6 is fixedly connected to a fleece-surface Velcro 61 , and the cover plate 5 is fixedly connected to a hook-surface Velcro 62 . The shape of the filter screen 6 corresponds to the vent 51 .

[0029] The heat dissipation inner shell 2 is made of a heat-conducting graphite sheet. A support rod 21 is fixedly connected to the heat dissipation inner shell 2 , and a socket matching the support rod 21 is provided on the cover plate 5 .

[0030] A sealing strip 55 is fixedly connected to the inner side wall of the cover plate 5 to increase the sealing between the cover plate 5 and the heat dissipation inner shell 2 after the cover plate 5 is installed.

[0031] Bolts 51 are passed through the edge of the cover plate 5 , and internal threaded holes matching the bolts 51 are formed on the protective housing 1 .

[0032] In order to improve the protective performance of the protective shell 1, the upper end of the protective shell 1 is an arc structure, and the left and right sides of the protective shell 1 are corrugated structures.

[0033] When using this device, first install the device, first connect the heat dissipation inner shell 2 to the lower shell wall of the protective outer shell 1, then insert the support rod 21 fixedly connected to the heat dissipation inner shell 2 into the socket on the cover 5, then the staff uses bolts 51 to install the cover 5 on the protective outer shell 1, and connects the filter 6 to the cover 5 through Velcro. The staff presses the control switch to start the heat dissipation fan 4. After the transformer generates heat, the heat is transferred to the air in the ventilation area 3. The heat dissipation fan 4 continuously exchanges the air in the ventilation area 3 with the outside air to take away the heat generated by the transformer. The heat dissipation inner shell 2 wraps the transformer to prevent dust carried in the air flow from contacting the internal transformer.

[0034] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not used to limit the conditions for the implementation of this utility model and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of this utility model without substantially changing the technical content.

[0035] The present invention has been described above with reference to preferred embodiments. However, the scope of protection of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the scope of protection of the present invention. Various improvements may be made to the present invention, and components may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, as long as there are no structural conflicts.

Claims

1. A heat dissipation protective shell for a mining transformer, comprising a protective shell (1), characterized in that: A heat dissipation inner shell (2) is provided inside the protective outer shell (1), a space for accommodating a transformer is formed inside the heat dissipation inner shell (2), a ventilation area (3) is formed between the protective outer shell (1) and the heat dissipation inner shell (2), and one or more heat dissipation fans (4) are provided in the ventilation area (3).

2. The heat dissipation protective shell of a mining transformer according to claim 1, characterized in that: The protective outer shell (1) and the heat dissipation inner shell (2) are both open at both ends, and the heat dissipation inner shell (2) is slidably connected to the shell wall of the protective outer shell (1). Cover plates (5) are provided at both ends of the protective outer shell (1), and ventilation holes (51) corresponding to the ventilation areas (3) are provided on the cover plates (5). The heat dissipation fan (4) is provided at the ventilation holes (51).

3. The heat dissipation protective shell of a mining transformer according to claim 2, characterized in that: The cover plate (5) is detachably connected to a filter screen (6), the edge of the filter screen (6) is fixedly connected to a fleece-surface Velcro (61), and the cover plate (5) is fixedly connected to a hook-surface Velcro (62), and the shape of the filter screen (6) corresponds to the vent (51).

4. The heat dissipation protective shell of a mining transformer according to claim 2, characterized in that: The heat dissipation inner shell (2) adopts a heat-conducting graphite sheet, the heat dissipation inner shell (2) is fixedly connected to a support rod (21), and a socket matching the support rod (21) is provided on the cover plate (5).

5. The heat dissipation protective shell of a mining transformer according to claim 2, characterized in that: Bolts (59) are passed through the edge of the cover plate (5), and internal threaded holes matching the bolts (59) are provided on the protective housing (1).

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