Mining flame-proof and intrinsic safety type multi-channel power box

Abstract

The utility model discloses a mining flame-proof and intrinsic safety type multi-channel power box, relates to the technical field of machining, and comprises a box body, a ventilation mechanism, a cooling mechanism, a loading and unloading mechanism and a transformation chamber, one side of the box body is hinged with an explosion-proof box door, a top external box is arranged right above the box body, and the top external box is connected with the ventilation mechanism. The two sides of the top external connection box are symmetrically connected with external connection wire pipes in a penetrating mode. A ventilation mechanism is arranged on one side of the box body, the ventilation mechanism conducts cyclic replacement on the interior of the box body, then wet gas in the mining environment is prevented from corroding electric devices, then the stability of operation and connection of the electric devices is ensured, and fasteners are connected into the box body at equal intervals. And in the operation process of the equipment, the oil is injected into the variable-pressure chamber again through the circulating pump, so that heat generated by operation of the equipment in the variable-pressure chamber is taken away, waste heat of heated cooling oil is effectively utilized to dry the filter element, and the energy efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, and particularly relates to a mine flameproof and intrinsically safe multi-way power supply box. Background Art

[0002] In the mining industry, the requirements for safety are very high, and the environment is extremely complex, with mixtures of flammable, explosive and combustible gases often appearing. Therefore, the requirements for equipment in such an environment are also very strict.

[0003] The characteristics of the flameproof explosion-proof power supply are: an explosion-proof box is added outside the power supply. It is required that after the flammable gas explodes inside the explosion-proof box, the explosion-proof box cannot be damaged and will not detonate the gas outside the explosion-proof box. The current thermal loss of the mine-used power supply is about 20%. This part of the thermal loss will be converted into heat. If this part of the heat is not transferred out in time, the internal parts of the power supply box will be damaged after long-term use.

[0004] Especially in the complex environment underground in coal mines, the power supply box used in coal mines needs to be protected by a flameproof enclosure that meets the coal mine safety standards. The whole equipment is in a completely enclosed explosion-proof box body. During the handling process of the power supply box, the intrinsically safe power supply placed in the power supply box collides with the power supply box, resulting in damage to the transformer and its components. The transformer is directly and rigidly connected to the power supply box, which will increase the difficulty of equipment maintenance and replacement. Content of the Utility Model

[0005] The purpose of the utility model is to provide a mine flameproof and intrinsically safe multi-way power supply box to solve the above-mentioned defects in the prior art.

[0006] The mine flameproof and intrinsically safe multi-way power supply box includes a box body, a ventilation mechanism, a cooling mechanism, a loading and unloading mechanism and a transformer chamber. One side of the box body is hinged with an explosion-proof box door. A top external connection box is arranged directly above the box body, and external wiring pipes are symmetrically penetrated and connected on both sides of the top external connection box.

[0007] A ventilation mechanism is arranged on one side of the box body. The ventilation mechanism circulates and replaces the inside of the box body, thereby avoiding the corrosion of electrical components by humid gas in the mine environment, and ensuring the stability of the operation and connection of electrical components. Fasteners are connected at equal intervals inside the box body.

[0008] A cooling mechanism is arranged on the other side of the ventilation mechanism. The cooling mechanism circulates the cooling oil inside the box body, thereby performing a temperature reduction treatment through the circulating oil, and simultaneously heating and drying the materials in the ventilation mechanism by using the heat in the oil.

[0009] An unloading and loading mechanism is arranged inside the box body. According to the usage requirements, the unloading and loading mechanism takes out the voltage transformation equipment parts from the inside of the box body, facilitating the disassembly and replacement of the parts. A voltage transformation controller is arranged inside the box body, and air exchange valves are symmetrically and penetratingly connected to one side of the box body.

[0010] Preferably, the box body is connected to the voltage transformation fuse through a partition plate arranged inside. On the other side of the partition plate, a vacuum contactor and a transformer are arranged. On one side of the partition plate, a leakage protector is arranged. On one side of the leakage protector, a voltage converter is arranged. Above the vacuum contactor, a disconnector is arranged. At the other end of the vacuum contactor, a voltage transformation chamber is arranged.

[0011] Preferably, the air exchange mechanism includes an air suction chamber, an electric heating plate, an injection pipe fitting, a positioning frame, a guide rod, a filter element, and a fan. The air suction chamber is installed on one side of the box body. Electric heating plates are arranged at equal intervals on the outside of the air suction chamber. Inside the air suction chamber, positioning frames are symmetrically arranged. Guide rods penetrate through the outside of the positioning frames. The filter element is connected to the outside of the two groups of positioning frames. One end of the injection pipe fitting penetrates through and is connected to the other side of the air suction chamber. The other side of the injection pipe fitting is connected to the input end of the fan. The filter element is arranged inside the air suction chamber.

[0012] Preferably, the injection pipe fitting is connected to the inside of the box body through a fan arranged on one side.

[0013] Preferably, the cooling mechanism includes a cooling oil tank, a liquid discharge pipe, a liquid inlet pipe, a filter screen box, a sewage discharge valve, and a circulation pump. The cooling oil tank is installed on one side of the box body. The top end of the cooling oil tank is connected to the liquid discharge pipe. The other side of the cooling oil tank is connected to the input end of the circulation pump. One end of the liquid inlet pipe is connected to the output end of the circulation pump. The bottom end of the cooling oil tank penetrates through and is connected to the sewage discharge valve. A filter screen box is arranged at the top end inside the cooling oil tank. The bottom end of the liquid inlet pipe is connected to the top end of the filter screen box.

[0014] Preferably, the voltage transformation chamber is connected to the input end of the circulation pump through a liquid inlet pipe connected to one side.

[0015] The unloading and loading mechanism includes a bottom mounting plate, an outer sleeve pipe fitting, an alloy guide rod, an outer tooth sleeve rod, an electric cylinder, and a nut. The bottom ends of the bottom mounting plate are symmetrically connected to the outer sleeve pipe fittings. The alloy guide rod is connected to the inside of the outer sleeve pipe fitting. The bottom end of the alloy guide rod is connected to the inside of the box body. The top end of the bottom mounting plate is connected to the outer tooth sleeve rod. The nut is connected to the outside of the outer tooth sleeve rod. The electric cylinder is installed inside the box body. The output end of the electric cylinder is connected to one side of the bottom mounting plate. Above the bottom mounting plate, a voltage transformation chamber and a partition plate are arranged.

[0016] Preferably, the bottom mounting plate is connected to the alloy guide rod through the outer sleeve pipe fitting arranged at the bottom end.

[0017] Preferably, the bottom mounting plate is connected to the inside of the box body through an electric cylinder connected to one side.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. When the equipment is running, the oil is injected into the inside of the transformer chamber again through the circulation pump, thereby taking away the heat generated by the operation of the equipment inside the transformer chamber. The waste heat of the heating and cooling oil is effectively utilized to dry the filter element, improving the energy efficiency, saving resources, reducing the production cost of the enterprise, and having a good drying effect, improving the injection drying rate of the air.

[0020] 2. According to the mining environment, the positioning frames arranged on both sides are pulled, and the two sides of the filter element are positioned through the two groups of positioning frames. The distance between the two groups of positioning frames is adjusted through the guide rods on both sides, facilitating the disassembly and assembly of filter elements of different sizes, facilitating the injection of dried outside air, improving the drying rate of the internal air exchange of the equipment, being conducive to improving the working quality of the air generator, and avoiding the influence of moisture on the normal operation of the transformer system by removing moisture, improving the working safety.

[0021] 3. The outer sleeve pipe arranged at the bottom end of the bottom mounting plate slides on the outside of the alloy guide rod, thereby facilitating the adjustment of the position of the bottom mounting plate for quickly positioning the internal instruments of the transformer. The transformer to be fixed in the box body can be positioned through the connecting piece, and the transformer is pushed horizontally by the cylinder. By cooperating with each other, the installation speed of the transformer can be increased, greatly shortening the installation time, further improving the working efficiency. At the same time, the nuts arranged symmetrically are rotated up or down on the outside of the outer tooth sleeve rod to adjust and control the height of the support of the horizontal support plate, thereby adjusting the height of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the whole utility model.

[0023] Figure 2 It is a structural schematic diagram of the inside of the whole box body of the utility model.

[0024] Figure 3 It is a side view structural schematic diagram of the box body in the utility model.

[0025] Figure 4 It is a structural schematic diagram of the inside of the air exchange mechanism in the utility model.

[0026] Figure 5 It is a structural schematic diagram of the loading and unloading mechanism in the utility model.

[0027] Figure 6 This is a schematic side view structure of the cooling mechanism in the present utility model.

[0028] Figure 7 This is a schematic top view structure of the box body in the present utility model.

[0029] Figure 8 This is a schematic side sectional view structure of the box body in the present utility model.

[0030] Among them:

[0031] 1. Box body; 2. Explosion-proof box door; 3. Top external connection box; 4. External wiring pipe;

[0032] 5. Ventilation mechanism; 51. Suction chamber; 52. Electric heating plate; 53. Injection pipe fitting; 54. Positioning frame; 55. Guide rod; 56. Filter element; 57. Fan; 58. Horizontal support plate

[0033] 6. Cooling mechanism; 61. Cooling oil tank; 62. Drain pipe; 63. Inlet pipe; 64. Filter screen box; 65. Drain valve; 66. Circulation pump;

[0034] 7. Fastening piece;

[0035] 8. Loading and unloading mechanism; 81. Bottom mounting plate; 82. Outer sleeve pipe fitting; 83. Alloy guide rod; 84. Outer tooth sleeve rod; 85. Electric cylinder; 86. Nut;

[0036] 9. Variable voltage fuse; 10. Variable voltage controller; 11. Partition plate part; 12. Vacuum contactor; 13. Transformer; 14. Disconnector; 15. Leakage protector; 16. Voltage converter; 17. Variable voltage chamber; 18. Ventilation valve. Specific embodiments

[0037] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0038] As Figures 1 to 8 shown, the mine explosion-proof and intrinsically safe multi-channel power supply box includes a box body 1, a ventilation mechanism 5, a cooling mechanism 6, a loading and unloading mechanism 8 and a variable voltage chamber 17. One side of the box body 1 is hingedly connected with an explosion-proof box door 2. A top external connection box 3 is arranged directly above the box body 1. Two sides of the top external connection box 3 are symmetrically penetrated and connected with external wiring pipes 4;

[0039] A ventilation mechanism 5 is arranged on one side of the box body 1. The ventilation mechanism 5 circulates and replaces the inside of the box body 1, thereby avoiding the corrosion of electrical components by humid gas in the mine environment, and thus ensuring the stability of the operation and connection of electrical components. Fastening pieces 7 are connected at equal intervals inside the box body 1;

[0040] On the other side of the air exchange mechanism 5, a cooling mechanism 6 is provided. The cooling mechanism 6 circulates the internal cooling oil of the box body 1, and then cools it through the circulating oil, and at the same time uses the heat in the oil to heat and dry the materials in the air exchange mechanism 5;

[0041] An unloading and loading mechanism 8 is arranged inside the box body 1. The unloading and loading mechanism 8 takes out the voltage transformation equipment parts from the inside of the box body 1 according to the usage requirements, which is convenient for disassembling and replacing the parts. A voltage transformation controller 10 is arranged inside the box body 1, and two air exchange valves 18 are symmetrically connected through the side of the box body 1.

[0042] In this embodiment, the box body 1 is connected to the voltage transformation fuse 9 through a partition plate member 11 arranged inside. On the other side of the partition plate member 11, a vacuum contactor 12 and a transformer 13 are arranged. On one side of the partition plate member 11, a leakage protector 15 is arranged. On one side of the leakage protector 15, a voltage converter 16 is arranged. Above the vacuum contactor 12, a disconnector 14 is arranged. At the other end of the vacuum contactor 12, a voltage transformation chamber 17 is arranged.

[0043] In this embodiment, the air exchange mechanism 5 includes an air suction chamber 51, an electric heating plate 52, an injection pipe fitting 53, a positioning frame 54, a guide rod 55, a filter element 56 and a fan 57. The air suction chamber 51 is installed on one side of the box body 1. Electric heating plates 52 are arranged at equal intervals on the outside of the air suction chamber 51. Positioning frames 54 are symmetrically arranged inside the air suction chamber 51. Guide rods 55 penetrate through the outside of the positioning frames 54. The filter element 56 is connected to the outside of the two groups of positioning frames 54. One end of the injection pipe fitting 53 penetrates through the other side of the air suction chamber 51. The other side of the injection pipe fitting 53 is connected to the input end of the fan 57. The filter element 56 is arranged inside the air suction chamber 51. The outside of the air suction chamber 51 is heated by the electric heating plate 52 to facilitate the drying treatment of the filter element 56.

[0044] In this embodiment, the injection pipe fitting 53 is connected to the inside of the box body 1 through a fan 57 arranged on one side. The fan 57 sucks in the outside air and purifies and dries the air.

[0045] In this embodiment, the cooling mechanism 6 includes a cooling oil tank 61, a drain pipe 62, a liquid inlet pipe 63, a filter screen box 64, a sewage discharge valve 65, and a circulation pump 66. The cooling oil tank 61 is installed on one side of the box body 1. The top end of the cooling oil tank 61 is connected to the drain pipe 62. The other side of the cooling oil tank 61 is connected to the input end of the circulation pump 66. The output end of the circulation pump 66 is connected to one end of the liquid inlet pipe 63. The bottom end of the cooling oil tank 61 is connected through and to the sewage discharge valve 65. A filter screen box 64 is provided at the inner top end of the cooling oil tank 61. The top end of the filter screen box 64 is connected to the bottom end of the liquid inlet pipe 63. The sediment in the cooling oil tank 61 is discharged and purified through the sewage discharge valve 65.

[0046] In this embodiment, the variable pressure chamber 17 is connected to the input end of the circulation pump 66 through a liquid inlet pipe 63 connected to one side. The circulation pump 66 is used to suck and circulate the oil inside, thereby dissipating the heat of the oil.

[0047] In this embodiment, the loading and unloading mechanism 8 includes a bottom mounting plate 81, an outer sleeve pipe 82, an alloy guide rod 83, an outer tooth sleeve rod 84, an electric cylinder 85, and a nut 86. The bottom ends of the bottom mounting plate 81 are symmetrically connected to the outer sleeve pipes 82. The inner part of the outer sleeve pipe 82 is connected to the alloy guide rod 83. The bottom end of the alloy guide rod 83 is connected to the inside of the box body 1. The top end of the bottom mounting plate 81 is connected to the outer tooth sleeve rod 84. The outer side of the outer tooth sleeve rod 84 is connected to the nut 86. The electric cylinder 85 is installed inside the box body 1. The output end of the electric cylinder 85 is connected to one side of the bottom mounting plate 81. A variable pressure chamber 17 and a partition plate member 11 are provided directly above the bottom mounting plate 81. The partition plate member 11 is used to position the sub-devices, facilitating the decentralized heat treatment of the equipment.

[0048] In this embodiment, the bottom mounting plate 81 is connected to the alloy guide rod 83 through the outer sleeve pipes 82 provided at the bottom end. The alloy guide rod 83 is used to guide the bottom mounting plate 81, facilitating the guiding of the equipment.

[0049] In this embodiment, the bottom mounting plate 81 is connected to the inside of the box body 1 through the electric cylinder 85 connected to one side. The electric cylinder 85 is used to push one side of the bottom mounting plate 81 for loading, unloading, and replacing the equipment.

[0050] When this mining flameproof and intrinsically safe multi-channel power supply box is actually applied, it includes the following working process:

[0051] Step 1: The operator opens the explosion-proof box door 2, then turns on the electric cylinder 85. By driving the bottom mounting plate 81 with the electric cylinder 85 to perform a lateral displacement, the outer sleeve pipe fitting 82 provided at the bottom end of the bottom mounting plate 81 slides outside the alloy guide rod 83, thereby adjusting the position of the bottom mounting plate 81. Subsequently, the variable voltage fuse 9 and the variable voltage controller 10 are installed on one side of the partition plate member 11, and the vacuum contactor 12, the transformer 13, and the disconnecting switch 14 are successively installed on one side of the partition plate member 11. Then, the variable voltage chamber 17 is installed on one side of the partition plate member 11. The electric cylinder 85 drives the bottom mounting plate 81 to move into the interior of the box body 1;

[0052] Step 2: Subsequently, the contact end of the outer sleeve pipe fitting 82 and the alloy guide rod 83 is locked by the fastener 7. Then, the wire is inserted into the interior of the external wiring pipe 4, so that the wire is injected into the interior of the top external connection box 3. After the transformer 13 provided inside the box body 1 transforms the high-voltage electricity, the current is respectively led out into the interior of wires with different diameters through the top external connection box 3 provided at the top;

[0053] Step 3: At the same time, according to the internal water content, the filter element 56 is installed outside the positioning frame 54. The positioning frame 54 and the filter element 56 are positioned by bolts. According to the width of the filter element 56, the distance between the two groups of positioning frames 54 is adjusted, and the positioning frame 54 is pushed to slide outside the guide rod 55. Then, the filter element 56 blocks one side of the injection pipe fitting 53. By turning on the fan 57, the outside air is inhaled, and after being dried by the filter element 56, it is introduced into the interior of the box body 1 to cool the interior of the box body 1;

[0054] Step 4: At the same time, the oil inside the variable voltage chamber 17 is injected into the cooling oil tank 61 through the drain pipe 62. The oil is filtered by the internal filter mesh box 64 of the cooling oil tank 61 and then precipitates into the interior of the cooling oil tank 61. The heat of the cooling oil tank 61 is transferred to the interior of the suction chamber 51 to heat the interior of the suction chamber 51. The circulation pump 66 is turned on to inject the oil into the variable voltage chamber 17 again, thereby taking away the heat generated by the operation of the equipment inside the variable voltage chamber 17;

[0055] Step 5: When installing the fan 57, the height of the support of the transverse support plate 58 can be adjusted and controlled by rotating the nut 86 so that the nut 86 rotates up or down outside the outer tooth sleeve rod 84, thereby adjusting the height of the fan 57 so that the fan 57 is aligned with one side of the variable voltage chamber 17, and then injecting the outside air into the variable voltage chamber 17 and the interior of the box body 1 to take away the heat inside the box body 1.

[0056] Therefore, the above-disclosed embodiments are illustrative in all respects and not exclusive. All changes within the scope of the present utility model or within the scope equivalent to the present utility model are encompassed by the present utility model.

Claims

1. Flameproof and intrinsically safe multi-channel power supply box for mine, characterized in that: It includes a box body (1), a ventilation mechanism (5), a cooling mechanism (6), a loading and unloading mechanism (8) and a transformer chamber (17). An explosion-proof box door (2) is hinged to one side of the box body (1). A top external connection box (3) is arranged directly above the box body (1). External connection pipes (4) are symmetrically penetrated and connected to both sides of the top external connection box (3). A ventilation mechanism (5) is arranged on one side of the box body (1). The ventilation mechanism (5) conducts cyclic replacement of the interior of the box body (1), thereby preventing electrical components from being corroded by humid gas in the mining environment, and ensuring the stability of the operation and connection of the electrical components. Fasteners (7) are connected at equal intervals inside the box body (1). A cooling mechanism (6) is arranged on the other side of the ventilation mechanism (5). The cooling mechanism (6) circulates the cooling oil inside the box body (1), thereby performing a cooling treatment through the circulated oil. At the same time, the heat in the oil is used to heat and dry the materials in the ventilation mechanism (5). A loading and unloading mechanism (8) is arranged inside the box body (1). The loading and unloading mechanism (8) takes out the voltage transformation equipment parts from the inside of the box body (1) according to the usage requirements, facilitating the disassembly and replacement of the parts. A voltage transformation controller (10) is arranged inside the box body (1). Ventilation valves (18) are symmetrically penetrated and connected to one side of the box body (1).

2. The explosion-proof and intrinsically safe multi-channel power supply box for mine use according to claim 1, characterized in that: The box body (1) is connected to a voltage transformation fuse (9) through a partition plate member (11) arranged inside. A vacuum contactor (12) and a transformer (13) are arranged on the other side of the partition plate member (11). A leakage protector (15) is arranged on one side of the partition plate member (11). A voltage converter (16) is arranged on one side of the leakage protector (15). A disconnecting switch (14) is arranged directly above the vacuum contactor (12). The other end of the vacuum contactor (12) is connected to a transformer chamber (17).

3. The explosion-proof and intrinsically safe multi-channel power supply box for mine according to claim 1, characterized in that: The ventilation mechanism (5) includes an air suction chamber (51), an electric heating plate (52), an injection pipe fitting (53), a positioning frame (54), a guide rod (55), a filter element (56) and a fan (57). The air suction chamber (51) is installed on one side of the box body (1). Electric heating plates (52) are arranged at equal intervals on the outside of the air suction chamber (51). Positioning frames (54) are symmetrically arranged inside the air suction chamber (51). Guide rods (55) penetrate and connect to the outside of the positioning frames (54). Filter elements (56) are connected to the outside of the two groups of positioning frames (54). One end of an injection pipe fitting (53) penetrates and connects to the other side of the air suction chamber (51). The other side of the injection pipe fitting (53) is connected to the input end of a fan (57). The filter element (56) is arranged inside the air suction chamber (51).

4. The explosion-proof and intrinsically safe multi-channel power supply box for mine use according to claim 3, characterized in that: The injection pipe fitting (53) is connected to the inside of the box body (1) through a fan (57) arranged on one side.

5. The explosion-proof and intrinsically safe multi-channel power supply box for mine use according to claim 1, wherein: The cooling mechanism (6) includes a cooling oil tank (61), a liquid discharge pipe (62), a liquid inlet pipe (63), a filter screen box (64), a sewage discharge valve (65) and a circulation pump (66). The cooling oil tank (61) is installed on one side of the box body (1). The top end of the cooling oil tank (61) is connected with the liquid discharge pipe (62). The other side of the cooling oil tank (61) is connected with the input end of the circulation pump (66). The output end of the circulation pump (66) is connected with one end of the liquid inlet pipe (63). The bottom end of the cooling oil tank (61) is connected through with the sewage discharge valve (65). A filter screen box (64) is arranged at the inner top end of the cooling oil tank (61). The top end of the filter screen box (64) is connected with the bottom end of the liquid inlet pipe (63).

6. The explosion-proof and intrinsically safe multi-channel power supply box for mine use according to claim 5, wherein: The variable pressure chamber (17) is connected with the input end of the circulation pump (66) through a liquid inlet pipe (63) connected to one side thereof.

7. The explosion-proof and intrinsically safe multi-channel power supply box for mine according to claim 1, characterized in that: The loading and unloading mechanism (8) includes a bottom mounting plate (81), an outer sleeve pipe fitting (82), an alloy guide rod (83), an outer tooth sleeve rod (84), an electric cylinder (85) and a nut (86). The bottom ends of the bottom mounting plate (81) are symmetrically connected with the outer sleeve pipe fittings (82). The inner part of the outer sleeve pipe fitting (82) is connected with the alloy guide rod (83). The bottom end of the alloy guide rod (83) is connected with the inside of the box body (1). The top end of the bottom mounting plate (81) is connected with the outer tooth sleeve rod (84). A nut (86) is connected to the outside of the outer tooth sleeve rod (84). The electric cylinder (85) is installed inside the box body (1). The output end of the electric cylinder (85) is connected with one side of the bottom mounting plate (81). A variable pressure chamber (17) and a partition plate member (11) are arranged directly above the bottom mounting plate (81).

8. The explosion-proof and intrinsically safe multi-channel power supply box for mine use according to claim 7, wherein: The bottom mounting plate (81) is connected with the alloy guide rod (83) through the outer sleeve pipe fitting (82) arranged at the bottom end thereof.

9. The explosion-proof and intrinsically safe multi-channel power supply box for mine use according to claim 7, wherein: The bottom mounting plate (81) is connected with the inside of the box body (1) through the electric cylinder (85) connected to one side thereof.

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