Intrinsic safety type voltage-stabilizing backup power supply for coal mine

Abstract

The utility model relates to the technical field of explosion-proof voltage-stabilized power supplies for coal mines, in particular to an intrinsic safety type voltage-stabilized backup power supply for a coal mine. The power supply comprises an explosion-proof cavity in an explosion-proof rear shell, the cavity is divided into a wiring cavity and a battery cavity by a partition plate, an intrinsic safety power supply is installed in the wiring cavity, a backup battery is installed in the battery cavity, and the intrinsic safety power supply and the backup battery are connected through an explosion-proof wiring terminal. A battery switch is arranged outside the battery cavity, and a cable leading-in device is arranged outside the wiring cavity. A cap plate is arranged on the top of the partition plate and connected with the anti-explosion front cover through the fixing holes and the fixing pieces. According to the utility model, a unique separate cavity design is adopted, so that continuous power supply can be ensured during external power failure, the reliability and safety of the system are improved, the maintenance process is simplified, and carrying and installation are facilitated. The power supply device is suitable for power supply of small-sized electronic equipment under a coal mine, and is especially suitable for key equipment needing continuous operation.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof and regulated power supplies for coal mines, specifically to an intrinsically safe regulated backup power supply for coal mines. Background Technology

[0002] The information disclosed in the background section of this utility model is intended only to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] Explosion-proof voltage regulators for underground coal mine equipment are mainly used to power small electronic devices in coal mines. Existing explosion-proof voltage regulators can only step down and regulate voltage; they lack backup power and cannot maintain normal operation of downstream equipment after a power outage. This results in network interruptions for devices such as intrinsically safe switches after a sudden power failure, forcing operators to operate locally underground and preventing remote control.

[0004] Therefore, there is an urgent need to develop an explosion-proof voltage regulator suitable for underground coal mines that can provide stable voltage and serve as a backup power source. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides an intrinsically safe regulated backup power supply for coal mines that can maintain the normal operation of downstream equipment even after a sudden power outage during equipment use, while also meeting intrinsic safety requirements. The aim is to improve the safety performance and reliability of coal mine power supplies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An intrinsically safe voltage stabilized backup power supply for coal mines includes an explosion-proof rear shell, an explosion-proof cavity inside the explosion-proof rear shell, and an intrinsically safe power supply for voltage reduction and stabilization installed inside the explosion-proof cavity.

[0008] The explosion-proof cavity is provided with a partition plate, which is used to divide the explosion-proof cavity into a wiring cavity and a battery cavity.

[0009] The intrinsically safe power supply is installed in the wiring cavity, a backup battery is installed in the battery cavity, and an explosion-proof wiring terminal is provided on the partition plate. The intrinsically safe power supply and the backup battery are electrically connected through the explosion-proof wiring terminal.

[0010] A battery switch associated with the backup battery is provided on the outside of the battery compartment; an inlet device for connecting cables is provided on the outside of the wiring compartment.

[0011] The battery cavity and the wiring cavity are respectively encapsulated by a first explosion-proof front cover and a second explosion-proof front cover.

[0012] Preferably, the top of the partition plate is provided with a cap plate that is flush with the end face of the explosion-proof rear shell. The cap plate has fixing holes, and the first explosion-proof front cover and the second explosion-proof front cover are fixed to the cap plate through the fixing holes and their corresponding fasteners.

[0013] Preferably, a grounding terminal is also provided on the outside of the wiring cavity.

[0014] Preferably, the backup battery is a rechargeable battery.

[0015] Preferably, the explosion-proof rear shell is provided with a handle for easy handling.

[0016] Preferably, the intrinsically safe power supply is equipped with a control circuit board for voltage reduction and regulation.

[0017] This utility model includes, but is not limited to, the following beneficial effects:

[0018] This invention integrates an intrinsically safe power supply and a backup battery, enabling the power supply to continue supplying power to underground equipment even when the main power supply fails. This ensures the continuous operation of the network and critical equipment, reduces system downtime and operator risks caused by power outages, and improves the reliability of underground power supply systems in coal mines.

[0019] This invention effectively isolates the main power supply section and the backup battery section through a compartmentalized structure design, avoiding the need to open the battery compartment during maintenance or wiring replacement. It allows maintenance personnel to handle the wiring compartment separately without opening the entire device, which simplifies daily maintenance, improves work efficiency, and reduces potential safety hazards.

[0020] Meanwhile, the explosion-proof rear shell, partition plates, and explosion-proof terminals ensure that the equipment meets the explosion-proof standards for underground coal mines, preventing explosions caused by electrical faults and enhancing safety. Furthermore, the separate cavity design and explosion-proof terminals make battery replacement or inspection more convenient, eliminating the need for frequent disassembly of the main equipment.

[0021] The device in this invention is equipped with a handle, which makes it easy to carry and install, especially when moving equipment in complex underground environments, thus improving ease of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external front structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal front structure of this utility model;

[0024] Figure 3This is a schematic diagram of the external side structure of this utility model.

[0025] The reference numerals used in the attached figures are as follows:

[0026] 1. Explosion-proof rear cover; 2. First explosion-proof front cover; 3. Handle; 4. Backup battery; 5. Battery switch; 6. Explosion-proof wiring terminal; 7. Control circuit board; 8. Intrinsically safe power supply; 9. Inlet device; 10. Wiring cavity; 11. Battery cavity; 12. Second explosion-proof front cover; 13. Chamber partition plate; 131. Cap plate; 14. Grounding terminal. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figures 1 to 3 An intrinsically safe voltage stabilized backup power supply for coal mines is presented, including an explosion-proof rear shell 1, an explosion-proof cavity is provided inside the explosion-proof rear shell 1, and an intrinsically safe power supply 8 for voltage reduction and stabilization is installed inside the explosion-proof cavity;

[0029] The explosion-proof cavity is provided with a partition plate, which is used to divide the explosion-proof cavity into a wiring cavity 10 and a battery cavity 11.

[0030] The intrinsically safe power supply 8 is installed in the wiring cavity 10, the backup battery 4 is installed in the battery cavity 11, the explosion-proof wiring terminal 6 is provided on the partition plate, and the intrinsically safe power supply 8 and the backup battery 4 are electrically connected through the explosion-proof wiring terminal 6.

[0031] A battery switch 5 associated with the backup battery 4 is provided on the outside of the battery compartment 11; an inlet device 9 for connecting cables is provided on the outside of the wiring compartment 10.

[0032] The battery cavity 11 and the wiring cavity 10 are respectively encapsulated by the first explosion-proof front cover 2 and the second explosion-proof front cover 12.

[0033] The top of the partition plate is provided with a cap plate 131 that is flush with the end face of the explosion-proof rear shell 1. The cap plate 131 is provided with fixing holes, and the first explosion-proof front cover 2 and the second explosion-proof front cover 12 are fixed to the cap plate 131 through the fixing holes and their corresponding fasteners.

[0034] The specific principle and usage process of this intrinsically safe voltage stabilized backup power supply for the coal mine are as follows:

[0035] This intrinsically safe regulated backup power supply for coal mines adopts a unique compartmentalized structure, consisting of a wiring compartment 10 and a battery compartment 11, meeting the explosion-proof requirements of underground coal mines. The backup battery 4 is fixed inside the battery compartment 11 and equipped with a battery switch 5. It is connected to the input terminal of the control circuit board 7 inside the wiring compartment 10 via explosion-proof terminals 6. After processing by the intrinsically safe power supply 8, an intrinsically safe 12V voltage is finally output at the output terminal of the control circuit board 7, and then connected to external electrical appliances via an inlet device 9. The control circuit of the control circuit board 7 is not a key design feature of this application; existing technology can be used.

[0036] Both cavities (wiring cavity 10 and battery cavity 11) are housed within the explosion-proof rear casing 1, but each has an independent explosion-proof front cover (first explosion-proof front cover 2 and second explosion-proof front cover 12), which respectively houses the intrinsically safe power supply 8 and the backup battery 4. This ensures that only the wiring cavity 10 needs to be opened during wiring, while the battery cavity 11, which is prohibited from being opened underground, remains closed. This design ensures that even in the event of a sudden external power outage during equipment use, the downstream equipment can still operate normally, while also meeting intrinsic safety requirements.

[0037] A handle 3 is provided on the explosion-proof rear housing 1 for easy handling. A grounding terminal 14 is also provided on the outside of the wiring cavity 10, which helps protect the equipment from electromagnetic interference and improves the overall stability of the system.

[0038] The backup battery 4 can be a dry cell battery or a rechargeable battery, with a rechargeable battery being the most preferred as it can be reused multiple times.

[0039] In summary, the power supply includes an explosion-proof cavity within an explosion-proof rear housing 1. This cavity is divided into a wiring cavity 10 and a battery cavity 11 by a partition plate. An intrinsically safe power supply 8 is installed in the wiring cavity 10, and a backup battery 4 is installed in the battery cavity 11. The two are connected via explosion-proof terminals 6. A battery switch 5 is located outside the battery cavity 11, and a cable entry device 9 is located outside the wiring cavity 10. A cap plate 131 is located on the top of the partition plate and is connected to the explosion-proof front cover via fixing holes and fasteners. This invention employs a unique cavity design to ensure continuous power supply even during external power outages, improving system reliability and safety, simplifying maintenance procedures, and facilitating transport and installation. This invention is suitable for powering small electronic devices in coal mines, especially for critical equipment requiring continuous operation.

[0040] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, if present, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal mine intrinsically safe voltage-stabilized backup power supply, comprising an explosion-proof rear shell, an explosion-proof cavity being arranged in the explosion-proof rear shell, and an intrinsically safe power supply being installed in the explosion-proof cavity and used to step down and stabilize voltage; characterized in that: a partition plate is arranged in the explosion-proof cavity, and the partition plate is used to divide the explosion-proof cavity into a wiring cavity and a battery cavity; the intrinsically safe power supply is installed in the wiring cavity, a backup battery is installed in the battery cavity, explosion-proof wiring terminals are arranged on the partition plate, and the intrinsically safe power supply and the backup battery are electrically connected through the explosion-proof wiring terminals; a battery switch associated with the backup battery is arranged outside the battery cavity; an introduction device used to introduce a lead cable is arranged outside the wiring cavity; and the battery cavity and the wiring cavity are respectively encapsulated by a first explosion-proof front cover and a second explosion-proof front cover.

2. The coal mine intrinsically safe voltage-stabilized backup power supply according to claim 1, characterized in that: a cap plate flush with an end face of the explosion-proof rear shell is arranged on a top of the partition plate, fixing holes are formed in the cap plate, and the first explosion-proof front cover and the second explosion-proof front cover are fixed on the cap plate through the fixing holes and corresponding fixing members.

3. The coal mine intrinsically safe voltage-stabilized backup power supply according to claim 1, characterized in that: a grounding terminal is further arranged outside the wiring cavity.

4. The coal mine intrinsically safe voltage-stabilized backup power supply according to claim 1, characterized in that: the backup battery is a rechargeable storage battery.

5. The coal mine intrinsically safe voltage-stabilized backup power supply according to claim 1, characterized in that: a handle facilitating carrying is arranged on the explosion-proof rear shell.

6. The coal mine intrinsically safe voltage-stabilized backup power supply according to any one of claims 1 to 5, characterized in that: the intrinsically safe power supply is provided with a control circuit board used to step down and stabilize voltage. ​ ​ ​ ​ ​ ​ ​ ​ ​

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