Convenient fast plug-in mine stable voltage power supply

Abstract

The utility model relates to a kind of portable quick plug mine voltage stabilizing power supply, it includes explosion-proof chamber, glue cavity, power module, a pair of alternating current cable introduction device and a pair of intrinsic safety output cable socket body;Power module and glue cavity are all set in explosion-proof chamber, alternating current cable introduction device is set on explosion-proof chamber, alternating current cable is set on alternating current cable introduction device, alternating current cable is connected with power module.This intrinsic safety output cable socket body first end is set in glue cavity, and the first end of intrinsic safety output cable socket body is connected with power module wire;The second end of intrinsic safety output cable socket body is sequentially set in explosion-proof chamber after passing through glue cavity and explosion-proof chamber.This application encapsulates intrinsic safety circuit in glue cavity located in explosion-proof chamber, simplifies power structure.By canceling the output end with connector's mine cable, the probability of cable wear or damage in power assembly, transportation, installation, use is reduced, and the power supply safety problem caused by cable breakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of voltage regulator technology, and in particular to a convenient quick-connect mining voltage regulator. Background Technology

[0002] Mining voltage stabilizers are used in underground coal mines to provide a stable 12V power supply for intrinsically safe intelligent products. These stabilizers must pass explosion-proof and safety certifications, and the products should adopt an explosion-proof and intrinsically safe structure to ensure safe use in explosive environments such as gas and coal dust. The enclosure protection level typically reaches IP54, providing dustproof, waterproof, and corrosion-resistant functions to adapt to harsh underground working conditions. They are crucial electrical equipment in intelligent coal mining and a guarantee of safe production in coal mines. The voltage stabilizer inputs 127V AC, with an explosion-proof internal cavity, and outputs an intrinsically safe 12V power supply. According to regulations, based on intrinsically safe circuit requirements, cable parameter limitations, and the actual application scenario, a circuit distance must be maintained between the 127V input side and the intrinsically safe 12V output side. Explosion-proof and intrinsically safe power supplies require double protection to ensure safety, and the cable length must meet explosion-proof structure requirements. According to requirements, the 12V output cable of an intrinsically safe mining voltage stabilizer is generally designed to be 1.2 meters. However, the 12V output cable typically uses polyethylene insulated, PVC sheathed communication cable for coal mines as a flexible, unarmored cable. Enhanced protection is required during production, packaging, and handling to prevent wear or damage. Coal mine tunnels are narrow, and equipment layouts are compact; excessively long cables increase the risk of tangling and wear, and are inconvenient for installation, maintenance, and replacement. Proper protection is essential during product installation and use to prevent damage. If the cable is damaged, the regulated power supply must be replaced to ensure underground safety. The harsh underground environment makes operation difficult, and replacement requires a complete power outage, disrupting normal production. Furthermore, the 1.2-meter output cable is insufficient for connecting intrinsically safe products underground, necessitating additional equipment. This equipment is typically designed to be installed on the power supply casing, receiving a 12V intrinsically safe input and connecting to a steel-braided rubber-sheathed connector at the output, enabling conversion from thin to thick cable and from short to long distance. The addition of this intermediate equipment increases production costs and introduces an additional safety risk. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a convenient quick-connect mining voltage regulator.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides a convenient quick-connect mining voltage regulator comprising an explosion-proof cavity, a sealed cavity, a power module, a pair of AC cable entry devices, and a pair of intrinsically safe output cable sockets; the power module and the sealed cavity are both disposed within the explosion-proof cavity, the AC cable entry devices are disposed on the explosion-proof cavity, the AC cable is disposed on the AC cable entry devices, and the AC cable is connected to the power module;

[0007] The first end of the intrinsically safe output cable socket is disposed inside the sealed cavity, and the first end of the intrinsically safe output cable socket is connected to the power module wire; the second end of the intrinsically safe output cable socket passes through the sealed cavity and the explosion-proof cavity in sequence and is disposed outside the explosion-proof cavity.

[0008] Optionally, the sealing cavity is filled with sealing material.

[0009] Optionally, the first end of the sealant cavity is connected to the first sidewall of the explosion-proof cavity, and the second end of the intrinsically safe output cable socket body passes through the end face of the first end of the sealant cavity and the first sidewall of the explosion-proof cavity in sequence and is disposed outside the explosion-proof cavity.

[0010] Optionally, the first end of the sealant cavity is an opening.

[0011] Optionally, the intrinsically safe output cable socket body is a cylinder, and the first end of the cylinder is fixed in the sealed cavity by a nut.

[0012] Optionally, the explosion-proof cavity includes an explosion-proof power supply housing and an explosion-proof top cover. The explosion-proof power supply housing is a hollow structure with one open end. A flange is provided at the open end of the explosion-proof power supply housing. The explosion-proof top cover is detachably connected to the flange. The power module and the sealing cavity are both connected to the explosion-proof power supply housing.

[0013] Optionally, a pair of mounting holes are symmetrically provided on the side of the explosion-proof power supply housing, and a pair of AC power cable inlet devices are respectively connected to the pair of mounting holes one by one. The sealant cavity and the intrinsically safe output cable socket are both located between the pair of AC power cable inlet devices.

[0014] Optionally, a plurality of power mounting plates are provided on the end face of the closed end of the explosion-proof power supply housing, and the power mounting plates are provided with through holes.

[0015] Optionally, a terminal block is provided inside the explosion-proof cavity, the power module is connected to the terminal block, and the AC cable provided on the AC cable inlet device is connected to the terminal block.

[0016] Optionally, grounding terminals are provided both inside and outside the explosion-proof cavity.

[0017] (III) Beneficial Effects

[0018] The first end of the intrinsically safe output cable socket is located inside the sealed cavity, and is connected to the power module wire. The sealed cavity effectively isolates the 127V AC and 12V intrinsically safe DC power supplies, ensuring the intrinsically safe circuit resides within an independent cavity, effectively isolating the explosion-proof cavity from the intrinsically safe circuit. The second end of the intrinsically safe output cable socket passes through both the sealed cavity and the explosion-proof cavity before being located outside the explosion-proof cavity. This allows for direct connection via wire to intrinsically safe intelligent products in coal mines, eliminating the need for intermediate equipment to convert thin cables to thick cables, thus reducing production costs and safety hazards.

[0019] The convenient quick-connect mining voltage regulator structure of this application encapsulates the intrinsically safe circuit within a sealed cavity located in an explosion-proof chamber, achieving miniaturization of the power supply's external shape and simplifying its structure. By eliminating the mining cable with a connector at the output end, the probability of cable wear or damage during power supply assembly, transportation, installation, and use is reduced, avoiding power supply safety issues caused by cable breakage and improving electrical safety. Attached Figure Description

[0020] Figure 1 This is a partial sectional view of the main view of the convenient quick-connect mining voltage regulator of this utility model.

[0021] Figure 2 This is a partial sectional view of the side view of the convenient quick-connect mining voltage regulator of this utility model.

[0022] Figure 3 This is a circuit connection diagram of the convenient quick-connect mining voltage regulator of this utility model.

[0023] [Explanation of Labels in the Attached Image]

[0024] 1: Explosion-proof top cover; 2: Explosion-proof power supply housing; 4: Grounding terminal; 5: Wiring terminal; 6: Power module; 7: Intrinsically safe output wiring terminal; 8: AC power cable entry device; 9: Intrinsically safe output cable socket body; 10: Sealed cavity. Detailed Implementation

[0025] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0026] While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0027] This utility model provides a convenient quick-connect mining voltage regulator. The convenient quick-connect mining voltage regulator is an explosion-proof and intrinsically safe DC power supply for mining, used in underground coal mining, which converts AC power into an intrinsically safe 12V power supply to provide intrinsically safe power for electrical control products.

[0028] like Figure 1 As shown, the portable quick-connect mining voltage regulator includes an explosion-proof chamber, a sealed chamber 10, a power module 6, a pair of AC cable inlet devices 8, and a pair of intrinsically safe output cable sockets 9. The pair of AC cable inlet devices 8 are configured for one AC input and one output. Two sets of power modules 6 are installed inside the explosion-proof chamber, and the pair of intrinsically safe output cable sockets 9 output two 12V intrinsically safe power supplies. The power module 6 and the sealed chamber 10 are each independently installed inside the explosion-proof chamber. The AC cable inlet devices 8 are connected to the explosion-proof chamber and are used to introduce and fix the AC cable for the voltage regulator's AC input. The AC cable is connected to the power module 6, which is a conventional circuit module. The power module 6 steps down the AC input to achieve a 127V AC to 12V DC regulated output. The first end of the intrinsically safe output cable socket 9 is located inside the sealed cavity 10. This first end is connected to the power module 6 wires. The sealed cavity 10 effectively isolates the 127V AC and 12V intrinsically safe DC power supplies, ensuring the intrinsically safe circuit is located within an independent sealed cavity 10, effectively isolating the explosion-proof cavity from the intrinsically safe circuit. The second end of the intrinsically safe output cable socket 9 passes through the sealed cavity 10 and the explosion-proof cavity in sequence, and is located outside the explosion-proof cavity. This allows for direct connection to a 4C cable with a standard mining interface, eliminating the need for a transfer device to convert from a thin cable to a thick cable, thus reducing production costs and safety hazards. The adoption of this convenient quick-connect mining voltage regulator structure encapsulates the intrinsically safe circuit within the sealed cavity 10 located inside the explosion-proof cavity, miniaturizing the power supply and simplifying its structure. By eliminating the mining cable with a connector at the output end, the probability of cable wear or damage during power supply assembly, transportation, installation, and use is reduced, avoiding power supply safety issues caused by cable breakage and improving electrical safety.

[0029] like Figure 1As shown, the sealed cavity 10 is filled with sealing material. The 12V power supply line output by the power module 6 in the explosion-proof cavity is a silicone wire. After passing through the sealed cavity 10, the silicone wire is soldered to the intrinsically safe output cable socket 9 and then sealed. Preferably, an intrinsically safe output terminal 7 is provided between the power module 6 and the intrinsically safe output cable socket 9. The 12V power output by the power module 6 is connected to the intrinsically safe output terminal 7 via a silicone wire, and then connected to the intrinsically safe output cable socket 9 via the silicone wire. The explosion-proof cavity and the intrinsically safe circuit are separated by an independent sealed cavity 10 to prevent faults (such as short circuits or arcs) in the explosion-proof cavity from being directly conducted to the intrinsically safe circuit. The sealed cavity 10 acts as an isolation cavity, effectively ensuring the output of fault signals through sealing, thus ensuring the output of the 12V DC regulated power supply. Preferably, the sealed cavity 10 is sealed with epoxy resin. After curing, the epoxy resin meets the explosion-proof requirements in terms of dielectric constant, withstand voltage index, maximum withstand temperature, and flame retardancy.

[0030] like Figure 1 and Figure 2 As shown, the sealant cavity 10 has a square box structure, with its first end connected to the first side wall of the explosion-proof cavity. After sealing, it is sealed and fixed with a cover plate. The second end of the intrinsically safe output cable socket body 9 passes through the end face of the first end of the sealant cavity 10 and the first side wall of the explosion-proof cavity in sequence, and is then positioned outside the explosion-proof cavity.

[0031] Furthermore, the first end of the sealing cavity 10 is open, and the first sidewall of the explosion-proof cavity is directly used as the end face of the first end of the sealing cavity 10, simplifying the structure of the explosion-proof cavity and the sealing cavity 10. Preferably, the sealing cavity 10 and the explosion-proof cavity are an integral structure.

[0032] like Figure 1 and Figure 2 As shown, the intrinsically safe output cable socket body 9 is a cylinder. The first end of the cylinder is stepped and passes through the first side wall of the explosion-proof cavity, abutting against the outer surface of the first side wall of the stepped surface. The first end of the cylinder is fixed on the first side wall by a nut, and the end is located in the sealant cavity 10 for connecting the cable of the output end of the power module 6.

[0033] like Figure 2 As shown, the explosion-proof cavity includes an explosion-proof power supply housing 2 and an explosion-proof top cover 1. The explosion-proof power supply housing 2 is a hollow structure with one open end. A flange is provided at the open end of the explosion-proof power supply housing 2. The explosion-proof top cover 1 is detachably connected to the flange to cover the open end of the explosion-proof power supply housing 2. The power module 6 and the sealing cavity 10 are both connected to the bottom plate of the explosion-proof power supply housing 2, or connected to the bottom plate through a mounting plate. The explosion-proof cavity encloses the electrical components through the explosion-proof power supply housing and the explosion-proof top cover 1. The high-temperature and high-pressure gas generated by the internal explosion is discharged after being cooled and depressurized through the gap in the outer shell (explosion-proof gap), ensuring that no explosion occurs in the external environment. Its design meets the requirements of shell strength and mating surface design.

[0034] SeeFigure 1 On one side of the explosion-proof power supply housing 2, a pair of mounting holes are symmetrically opened about the axis of symmetry of the explosion-proof power supply housing 2. A pair of AC power cable entry devices 8 are respectively connected to the pair of mounting holes. The sealant cavity 10 and the intrinsically safe output cable socket body 9 are both located between the pair of AC power cable entry devices 8, thus optimizing the product structure and layout and realizing the miniaturization design of the product.

[0035] Further, see Figure 1 Multiple power mounting plates are welded to the closed end face of the explosion-proof power supply housing 2. The power mounting plates have through holes, and the convenient quick-connect mining voltage stabilizer is fixed to the hydraulic support by bolts, which improves the convenience of installation.

[0036] See Figure 1 and Figure 3 The explosion-proof cavity is equipped with a terminal block 5, which is located near the AC power cable entry device 8. A power module 6 is connected to the terminal block 5. An AC power cable on the AC power cable entry device 8 is connected to the terminal block 5, allowing AC power to be introduced into the explosion-proof cavity and connected to two power modules 6 via the terminal block 5. Grounding terminals 4 are installed both inside and outside the explosion-proof cavity, ensuring effective grounding and achieving safety protection.

[0037] The convenient quick-connect mining voltage regulator structure of this application encapsulates the intrinsically safe circuit within a sealed cavity 10 located in an explosion-proof chamber, achieving miniaturization of the power supply's appearance and simplifying its structure. By eliminating the mining cable with a connector at the output end, the probability of cable wear or damage during power supply assembly, transportation, installation, and use is reduced, avoiding power supply safety issues caused by cable breakage and improving electrical safety.

[0038] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A portable quick plug mine stable voltage power supply, characterized in that, The portable quick-connect mining voltage regulator includes an explosion-proof cavity, a sealed cavity (10), a power module (6), a pair of AC cable entry devices (8), and a pair of intrinsically safe output cable sockets (9); the power module (6) and the sealed cavity (10) are both located inside the explosion-proof cavity, the AC cable entry device (8) is located on the explosion-proof cavity, the AC cable is located on the AC cable entry device (8), and the AC cable is connected to the power module (6); The first end of the intrinsically safe output cable socket body (9) is disposed inside the sealant cavity (10), and the first end of the intrinsically safe output cable socket body (9) is connected to the power module (6) wire; the second end of the intrinsically safe output cable socket body (9) passes through the sealant cavity (10) and the explosion-proof cavity in sequence and is disposed outside the explosion-proof cavity.

2. The portable quick plug mine stable voltage power supply according to claim 1, characterized in that, The sealing cavity (10) is filled with sealing material.

3. The portable quick-plug mine stable power supply according to claim 1, wherein, The first end of the sealant cavity (10) is connected to the first side wall of the explosion-proof cavity, and the second end of the intrinsically safe output cable socket body (9) passes through the end face of the first end of the sealant cavity (10) and the first side wall of the explosion-proof cavity in sequence and is then disposed outside the explosion-proof cavity.

4. The portable quick-plug mine stable power supply according to claim 3, characterized in that, The first end of the sealant cavity (10) is an opening.

5. The portable quick-plug mine stable power supply according to claim 3, wherein, The intrinsically safe output cable socket body (9) is a cylinder, and the first end of the cylinder is fixed in the sealant cavity (10) by a nut.

6. The portable quick-plug mine stable power supply of claim 1, wherein, The explosion-proof cavity includes an explosion-proof power supply housing (2) and an explosion-proof top cover (1). The explosion-proof power supply housing (2) is a hollow structure with one open end. The open end of the explosion-proof power supply housing (2) is provided with a flange. The explosion-proof top cover (1) is detachably connected to the flange. The power module (6) and the sealant cavity (10) are both connected to the explosion-proof power supply housing (2).

7. The portable quick-plug mine stable power supply according to claim 6, wherein, The explosion-proof power supply housing (2) has a pair of symmetrical mounting holes on its side. A pair of AC cable entry devices (8) are connected to the pair of mounting holes one by one. The sealant cavity (10) and the intrinsically safe output cable socket body (9) are both located between the pair of AC cable entry devices (8).

8. The portable quick-plug mine stable power supply according to claim 6, wherein, Multiple power mounting plates are provided on the end face of the closed end of the explosion-proof power supply housing (2), and the power mounting plates are provided with through holes.

9. The portable quick-plug mine stable power supply of claim 1, wherein, The explosion-proof cavity is provided with a terminal block (5), the power module (6) is connected to the terminal block (5), and the AC cable provided on the AC cable inlet device (8) is connected to the terminal block (5).

10. The portable quick-plug mine stable power supply of claim 1, wherein, Grounding terminals (4) are provided both inside and outside the explosion-proof cavity.

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