Flame-proof heat exchanger

Abstract

The utility model belongs to the field of explosion -proof heat exchange technology, especially relate to a kind of explosion -proof heat exchange device, including radiator, heat absorber, water gap adapter, radiator is fixedly connected with explosion -proof cavity, the radiator includes substrate, cover, water channel, substrate is fixedly connected with explosion -proof cavity, closed cavity structure is formed between substrate and explosion -proof cavity, water channel is equipped in substrate, substrate side is connected with cover, water gap is equipped on cover, other side is fixedly connected with heat absorber, water gap is connected with water channel;The water gap adapter is connected on the water gap;Heat absorber is arranged in explosion -proof cavity inside.Advantage is: simple structure, easy to install, improve heat exchange efficiency, meet the heat exchange demand of air in explosion -proof cavity.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof heat exchange technology, and in particular relates to a heat exchange device for the heat exchange of air inside the explosion-proof cavity of various underground electrical appliances in mines. Background Technology

[0002] Mining underground electrical equipment is typically housed within explosion-proof enclosures to ensure normal operation in environments with explosive gases such as methane, including coal mines and other mines. During operation, the power electronic modules and reactors used in various mining underground frequency converters and rectifiers generate significant heat, causing the air temperature inside the explosion-proof enclosure to rise. Excessive air temperature can affect the performance or lifespan of other components, necessitating heat exchange. Currently, the primary heat exchange method for the air inside the explosion-proof enclosure is external welding of iron fins, which has relatively low efficiency. As the power of the power electronic modules and reactors used in mining underground frequency converters and rectifiers increases, the heat generated by the air inside the explosion-proof enclosure is also increasing. This necessitates a higher heat exchange capacity between the explosion-proof enclosure and the outside environment. The existing external welding of iron fins is no longer sufficient to meet the heat exchange requirements, necessitating a more efficient heat exchange product to replace the existing one and meet the heat exchange needs of the air inside the explosion-proof enclosure. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an explosion-proof heat exchange device that improves heat exchange efficiency and meets the heat exchange requirements of the air inside the explosion-proof cavity.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] An explosion-proof heat exchange device includes a radiator, a heat absorber, and a water inlet adapter. The radiator is fixedly connected to an explosion-proof cavity. The radiator includes a base plate, a cover plate, and water channels. The base plate is fixedly connected to the explosion-proof cavity, forming a closed cavity structure between the base plate and the explosion-proof cavity. Water channels are provided inside the base plate. One side of the base plate is connected to the cover plate, and a water inlet is provided on the cover plate. The other side of the base plate is fixedly connected to the heat absorber, and the water inlet is connected to the water channels. A water inlet adapter is connected to the water inlet. The heat absorber is disposed inside the explosion-proof cavity.

[0006] The heat sink is fixed to the outside of the explosion-proof cavity.

[0007] The substrate is fixedly connected to the explosion-proof cavity around its perimeter by bolts.

[0008] The substrate is provided with threaded blind holes for connection with the heat absorber.

[0009] The heat absorber includes a heat-absorbing plate and a heat-absorbing sheet. One side of the heat-absorbing plate is attached to the substrate and fixedly connected by bolts, while the other side of the heat-absorbing plate is connected to the heat-absorbing sheet.

[0010] The water inlet and the water inlet adapter are threaded together.

[0011] The substrate has a groove, and the substrate is welded to the cover plate, forming a water channel between the groove and the cover plate.

[0012] The radiator is made of sheet material that meets explosion-proof requirements.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] An explosion-proof heat exchanger improves heat exchange efficiency and meets the heat exchange requirements of the air within the explosion-proof cavity. The explosion-proof heat exchanger has the following advantages:

[0015] 1. Excellent explosion-proof performance: The radiator and the explosion-proof cavity form a closed cavity structure, and the radiator is made of plates that meet explosion-proof requirements, which can effectively prevent flammable and explosive gases or dust from entering the radiator, ensuring the safe operation of the equipment in an explosion-proof environment. It also avoids downhole accidents caused by micro-arcs and sparks generated under abnormal equipment conditions.

[0016] 2. High-efficiency heat exchange: The heat absorber is installed inside the explosion-proof cavity, which can directly absorb the heat generated by the equipment and transfer the heat to the outside of the radiator through the cooling water in the water channel, thus achieving high-efficiency heat exchange.

[0017] 3. Simple structure and easy installation: The radiator is fixedly connected to the explosion-proof cavity by bolts, the water inlet is threadedly connected to the water inlet adapter, and the heat absorber is fixedly connected to the base plate by bolts. The entire device has a simple structure and is easy to install and maintain. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the explosion-proof heat exchange device.

[0019] Figure 2 This is the front view of the heat absorber.

[0020] Figure 3 This is a top view of the heat absorber.

[0021] Figure 4 This is a schematic diagram of the radiator structure.

[0022] Figure 5 This is a schematic diagram of the substrate structure.

[0023] In the diagram: 1. Explosion-proof cavity; 2. Heat absorber; 3. Bolt; 4. Radiator; 5. Water inlet adapter; 6. Heat absorber plate; 7. Heat absorber plate; 8. Base plate; 9. Cover plate; 10. Water inlet; 11. Solder; 12. Groove. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0025] See Figures 1-5 An explosion-proof heat exchange device includes a radiator 4, a heat absorber 2, and a water inlet 10 adapter 5. The radiator 4 is fixedly connected to an explosion-proof cavity 1. The radiator 4 includes a base plate 8, a cover plate 9, and water channels. The base plate 8 is fixedly connected to the explosion-proof cavity 1, forming a closed cavity structure between the base plate 8 and the explosion-proof cavity 1. Water channels are provided inside the base plate 8. One side of the base plate 8 is connected to the cover plate 9, and a water inlet 10 is provided on the cover plate 9. The other side is fixedly connected to the heat absorber 2, and the water inlet 10 communicates with the water channels. A water inlet 10 adapter 5 is connected to the water inlet 10. The water inlet 10 and the water inlet 10 adapter 5 are threadedly connected. The heat absorber 2 is disposed inside the explosion-proof cavity 1 and is installed on the base plate 8 by bolts 3.

[0026] See Figure 2 , Figure 3 The heat absorber 2 includes a heat-absorbing plate 7 and heat-absorbing sheets 6. One side of the heat-absorbing plate 7 is attached to the substrate 8 and fixedly connected by bolts 3. The other side of the heat-absorbing plate 7 is connected to several heat-absorbing sheets 6. The heat-absorbing plate 7 and the heat-absorbing sheets 6 are connected by welding, extrusion, or integral forming. The heat-absorbing sheets 6 have an L-shaped structure, with their bottom surface welded to the other side of the heat-absorbing plate 7, and the heat-absorbing sheets 6 are arranged parallel to each other. The heat-absorbing plate 7 and the heat-absorbing sheets 6 can also be connected by riveting, bonding, or a drawn integral structure. The heat-absorbing plate 7 and the heat-absorbing sheets 6 are made of metal materials with good thermal conductivity, such as aluminum or copper. See Figure 1 , Figure 4 The surface roughness of the substrate 8 and the heat absorber 7 in contact is both below 3.2, and the two high-precision planes are tightly fitted, allowing heat from the heat absorber 7 to be efficiently transferred to the substrate 8. The heat absorber 6 conducts heat from the air inside the explosion-proof cavity to the heat absorber 7, and the heat from the heat absorber 7 is conducted to the substrate 8, which is tightly connected to it. The heat from the substrate 8 is then carried to the outside of the explosion-proof cavity 1 by cooling water flowing through the water channels of the substrate 8. The heat absorber 2 is made of aluminum or copper plate.

[0027] See Figures 1-5 The radiator 4 is fixed to the outside of the explosion-proof cavity 1. Sufficient contact area is reserved around the base plate 8 to contact the explosion-proof cavity 1, and it is connected to the explosion-proof housing by bolts 3. The radiator 4 is made of materials that meet explosion-proof requirements, such as steel plates or copper plates. The base plate 8 of the radiator 4 and the explosion-proof housing form an explosion-proof cavity, ensuring the equipment meets explosion-proof requirements.

[0028] The substrate 8 has threaded blind holes for connection with the absorber 2. The substrate 8 also has grooves 12, which can be arranged in a serpentine pattern, with their end outlets connecting to the sprue 10. The substrate 8 and the cover plate 9 are welded together with solder 11, forming a water channel between the grooves 12 and the cover plate 9. The sprue 10 is welded and fixed to the cover plate 9. The substrate 8, cover plate 9, sprue 10, and sprue 10 adapter are all made of steel or copper.

[0029] See Figures 1-5 During operation, cooling water enters the water channel through the adapter 5 at water inlet 10, absorbs the heat transferred by the heat absorber 2, and then flows out from another water inlet 10. The heat-absorbing fins 6 of the heat absorber 2 absorb the heat generated by the equipment inside the explosion-proof cavity 1, transfer it to the base plate 8 through the heat-absorbing plate 7, and then transfer the heat to the outside of the radiator 4 through the cooling water in the water channel, achieving efficient heat exchange. The entire device can operate safely and stably in an explosion-proof environment.

[0030] This utility model has a simple structure, is easy to install and maintain. The heat absorber 2 is installed inside the explosion-proof cavity 1, which can directly absorb the heat generated by the equipment and transfer the heat to the outside of the radiator 4 through the cooling water in the water channel, realizing efficient heat exchange, improving heat exchange efficiency, and meeting the heat exchange requirements of the air inside the explosion-proof cavity 1.

[0031] Through the above specific embodiments, those skilled in the art can easily implement this utility model. However, it should be understood that this utility model is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions. Due to space limitations and for the sake of brevity, not all of these combined solutions have been described. 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. An explosion-proof heat exchange device, characterized in that, The device includes a radiator, a heat absorber, and a water inlet adapter. The radiator is fixedly connected to an explosion-proof cavity. The radiator includes a base plate, a cover plate, and water channels. The base plate is fixedly connected to the explosion-proof cavity, forming a closed cavity structure between the base plate and the explosion-proof cavity. Water channels are provided inside the base plate. One side of the base plate is connected to the cover plate, and a water inlet is provided on the cover plate. The other side of the base plate is fixedly connected to the heat absorber, and the water inlet is connected to the water channels. A water inlet adapter is connected to the water inlet. The heat absorber is disposed inside the explosion-proof cavity.

2. The explosion-proof heat exchange device according to claim 1, characterized in that, The heat sink is fixed to the outside of the explosion-proof cavity.

3. The explosion-proof heat exchanger according to claim 1, characterized in that, The substrate is fixedly connected to the explosion-proof cavity around its perimeter by bolts.

4. The explosion-proof heat exchange device according to claim 1, characterized in that, The substrate is provided with threaded blind holes for connection with the heat absorber.

5. The explosion-proof heat exchange device according to claim 1, characterized in that, The heat absorber includes a heat-absorbing plate and a heat-absorbing sheet. One side of the heat-absorbing plate is attached to the substrate and fixedly connected by bolts, while the other side of the heat-absorbing plate is connected to the heat-absorbing sheet.

6. The explosion-proof heat exchange device according to claim 1, characterized in that, The water inlet and the water inlet adapter are threaded together.

7. The explosion-proof heat exchange device according to claim 1, characterized in that, The substrate has a groove, and the substrate is welded to the cover plate, forming a water channel between the groove and the cover plate.

8. The explosion-proof heat exchange device according to claim 1, characterized in that, The radiator is made of sheet material that meets explosion-proof requirements.

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