Explosion-proof power supply

Abstract

The utility model is applicable to the technical field of explosion-proof power supplies, and provides an explosion-proof power supply, which comprises a power supply shell, a control panel, a conductive connecting piece, a wiring terminal, a double-row rectifier cover and a double-row protective cover, one side of the power supply shell is provided with an opening, the control panel is fixed in the power supply shell, and the conductive connecting piece is connected with the wiring terminal. The conductive connecting piece and the wiring terminal are correspondingly assembled and jointly fixed on the double-row rectifier cover, the conductive connecting piece is fixed on the control panel through welding, the double-row rectifier cover is electrically connected with the control panel and buckled at the opening, the double-row protective cover is detachably buckled at the opening, and the double-row protective cover is fixed on the control panel through welding. And a closed cavity for accommodating the double-row rectifier cover is formed between the double-row protective cover and the power supply shell. The explosion-proof power supply provided by the embodiment of the utility model has comprehensive functions and can play a good explosion-proof effect.

Description

Explosion-proof power supply Technical Field

[0001] This utility model belongs to the field of explosion-proof power supply technology, and in particular relates to an explosion-proof power supply. Background Technology

[0002] With the rapid development of industrial automation and petrochemical industries, more and more equipment needs to operate in areas with hazardous environments such as flammable and explosive gases and dust. For example, in petrochemical plants, a power module failure or short circuit could ignite sparks, leading to an explosion and causing huge economic losses and casualties.

[0003] Most traditional power modules on the market today are single-function and unsuitable for explosion-proof areas, focusing only on basic power conversion and supply functions, posing significant safety hazards. Traditional power supplies are not adequately designed for explosion protection, lacking effective spark suppression, overheat protection, and protective structures for special environments. Furthermore, the low enclosure protection level of traditional power supplies cannot effectively prevent flammable and explosive substances from entering the power supply, further increasing the risk of explosion. Summary of the Invention

[0004] The purpose of this utility model is to provide an explosion-proof power supply, which aims to solve the problem that existing technologies cannot provide a fully functional explosion-proof power supply suitable for explosion-proof areas.

[0005] In a first aspect, this utility model provides an explosion-proof power supply, comprising: a power supply housing, a control board, conductive connectors, terminals, a double-row rectifier cover, and a double-row protective cover. The power supply housing has an opening on one side. The control board is fixed inside the power supply housing. The conductive connectors are correspondingly assembled with the terminals and jointly fixed to the double-row rectifier cover. The conductive connectors are fixed to the control board by welding. The double-row rectifier cover is electrically connected to the control board and fastened to the opening. The double-row protective cover is detachably fastened to the opening. A closed cavity is formed between the double-row protective cover and the power supply housing to accommodate the double-row rectifier cover.

[0006] In some embodiments, the dual-row rectifier cover includes a first mounting portion and a second mounting portion, the first mounting portion being located above the dual-row rectifier cover and the second mounting portion being located below the dual-row rectifier cover, and the width of the second mounting portion being greater than the width of the first mounting portion, such that the second mounting portion protrudes outward relative to the first mounting portion in the horizontal direction.

[0007] In some embodiments, the conductive connector includes a first conductive connector and a second conductive connector, wherein the first conductive connector is arranged in a first mounting portion of the dual-row rectifier cover, and the second conductive connector is arranged in a second mounting portion of the dual-row rectifier cover.

[0008] In some embodiments, the opening is provided with a fixing part, which is formed by the bottom of the power supply housing extending in the direction toward the side opening of the power supply housing.

[0009] In some embodiments, a sealant layer is provided between the dual-row rectifier cover and the dual-row protective cover, and the sealant layer is applied to the joint interface between the dual-row rectifier cover and the dual-row protective cover to achieve airtight sealing.

[0010] In some embodiments, the dual-row rectifier cover is provided with a circular through hole, which is used to fill the inside of the power supply with sand.

[0011] In some embodiments, the explosion-proof power supply further includes a knob cover, which seals the circular through hole via a snap-fit ​​structure.

[0012] In some embodiments, the explosion-proof power supply includes a PWM dimming circuit, which is integrated into the control board and configured to receive control signals from an external dimmer and adjust the output pulse width according to the signals to achieve brightness adjustment of the connected lamps.

[0013] In some embodiments, the explosion-proof power supply is provided with a current regulating unit, which is disposed outside the power supply housing and includes an adjustable knob disposed on the outer side wall of the power supply housing. The adjustable knob is used to adjust the output current value so that the explosion-proof power supply can adapt to loads of different power.

[0014] In some embodiments, the explosion-proof power supply includes an emergency power supply unit, which is disposed inside the power supply housing and includes:

[0015] A power monitoring circuit, integrated into the control board, detects the status of the main input power supply in real time.

[0016] An energy storage device is disposed inside the power supply casing;

[0017] A switching circuit, integrated into the control board, is used to automatically switch to the energy storage device for power supply when the power monitoring circuit detects that the main input power is cut off.

[0018] This utility model provides an explosion-proof power supply, including a power supply housing, a control board, conductive connectors, terminals, a double-row rectifier cover, and a double-row protective cover. One side of the power supply housing has an opening. The conductive connectors and terminals are correspondingly assembled and fixed to the double-row rectifier cover. The conductive connectors are welded to the control board, which is fixed inside the power supply housing. The double-row rectifier cover is electrically connected to the control board and snaps into the opening. The double-row protective cover is detachably snapped into the opening, forming a closed cavity between the double-row protective cover and the power supply housing to accommodate the double-row rectifier cover. This explosion-proof power supply, through the corresponding assembly and fixing of the conductive connectors and terminals to the double-row rectifier cover, and simultaneously welded to the control board, forms a robust electrical connection structure, reducing electrical faults and safety hazards caused by loose wiring or poor contact. The explosion-proof power supply of this utility model also features a double-row rectifier cover and a double-row protective cover, forming a closed chamber between the double-row protective cover and the power supply casing. This effectively isolates the electrical components inside the power supply from the external environment, preventing hazards caused by sparks, electric arcs, etc., significantly improving the explosion-proof performance and meeting the safety requirements of explosion-proof power supplies. Attached Figure Description

[0019] Figure 1 is an exploded view of the explosion-proof power supply provided in Embodiment 1 of this utility model;

[0020] Figure 2 is a perspective view of the explosion-proof power supply provided in Embodiment 1 of this utility model;

[0021] Figure 3 is a perspective view of the double-row rectifier cover provided in Embodiment 1 of this utility model;

[0022] Figure 4 is another perspective view of the double-row rectifier cover provided in Embodiment 1 of this utility model;

[0023] Figure 5 is a schematic diagram of the power supply terminals provided in an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the emergency power supply terminal provided in an embodiment of this utility model;

[0025] Figure 7 is an exploded view of the explosion-proof power supply provided in Embodiment 2 of this utility model;

[0026] Figure 8 is a perspective view of the explosion-proof power supply provided in Embodiment 2 of this utility model;

[0027] Figure 9 is a perspective view of the explosion-proof power supply components provided in Embodiment 2 of this utility model;

[0028] Figure 10 is another perspective view of the explosion-proof power supply components provided in Embodiment 2 of this utility model;

[0029] Figure 11 is an exploded view of the explosion-proof power supply provided in Embodiment 3 of this utility model;

[0030] Figure 12 is a perspective view of the explosion-proof power supply provided in Embodiment 3 of this utility model;

[0031] Figure 13 is a perspective view of the explosion-proof power supply components provided in Embodiment 3 of this utility model;

[0032] Figure 14 is another perspective view of the explosion-proof power supply components provided in Embodiment 3 of this utility model; Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0035] Furthermore, in embodiments of this utility model, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure, feature, device, or element referred to must have a specific orientation or positional relationship, nor that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0036] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this utility model will not be described separately.

[0037] The explosion-proof power supply 100 of this utility model includes a power supply housing 10, a control board 20, conductive connectors 30, terminals 40, a double-row rectifier cover 50, and a double-row protective cover 60. The power supply housing 10 has an opening on one side. The conductive connectors 30 and terminals 40 are correspondingly assembled and fixed to the double-row rectifier cover 50. The conductive connectors 30 are fixed to the control board 20 by welding. The control board 20 is fixed inside the power supply housing 10. The double-row rectifier cover 50 is electrically connected to the control board 20 and fastened to the opening on the side of the power supply housing 10. The double-row protective cover 60 is detachably fastened to the opening on the side of the power supply housing 10. A closed cavity for accommodating the double-row rectifier cover 50 is formed between the double-row protective cover 60 and the power supply housing 10. The explosion-proof power supply 100 of this invention is assembled with conductive connectors 30 and terminals 40, and is fixed together to the double-row rectifier cover 50. It is also welded to the control board 20, forming a stable electrical connection structure, reducing electrical faults and safety hazards caused by loose wiring or poor contact. Furthermore, the explosion-proof power supply 100 of this invention, by setting up the double-row rectifier cover 50 and the double-row protective cover 60, forms a closed cavity between the double-row protective cover 60 and the power supply casing 10, effectively isolating the internal electrical components of the power supply from the external environment, preventing dangers caused by sparks, arcs, etc., significantly improving explosion-proof performance, and meeting the safety requirements of explosion-proof power supplies.

[0038] For ease of understanding, the following describes different embodiments of the present invention. Of course, the present invention is not limited thereto:

[0039] Example 1:

[0040] Please refer to Figures 1 to 6. Embodiment 1 provides an explosion-proof power supply that can provide a rated power output of 160W, adapting to the power needs of various explosion-proof equipment, such as explosion-proof lighting fixtures and explosion-proof monitoring equipment. The explosion-proof power supply 100 includes a power housing 10, a control board 20, conductive connectors 30, terminals 40, a double-row rectifier cover 50, and a double-row protective cover 60. The power housing 10 has an opening on one side. The control board 20 is fixed inside the power housing 10. The conductive connectors 30 and terminals 40 are correspondingly assembled and jointly fixed to the double-row rectifier cover 50. The conductive connectors 30 are fixed to the control board 20 by welding. The double-row rectifier cover 50 is electrically connected to the control board 20 and fastened to the side opening of the power housing 10. The double-row protective cover 60 is detachably fastened to the side opening of the power housing 10. A closed chamber for accommodating the double-row rectifier cover 50 is formed between the double-row protective cover 60 and the power housing 10.

[0041] In this embodiment, the power supply housing 10 is generally rectangular in shape, and one side of the power supply housing 10 has an opening. A fixing part 11 is provided at the side opening of the power supply housing 10, extending from the bottom of the power supply housing 10 towards the side opening. The fixing part 11 is used for the fixed installation of the double-row rectifier cover 50 and the double-row protective cover 60. This ensures that the double-row rectifier cover 50 and the double-row protective cover 60 can be securely connected to the power supply housing 10, thereby ensuring the structural stability and reliability of the entire explosion-proof power supply 100.

[0042] The power supply housing 10 also has a first slot inside, located on the inner wall of the power supply housing 10. The shape and size of the first slot are adapted to the edge contour of the control board. When the control board 20 is installed, its edge can be accurately inserted into the first slot, allowing for a tight fit between the control board 20 and the first slot. The first slot secures the control board 20 through a snap-fit ​​mechanism, ensuring that the control board 20 is firmly installed inside the power supply housing 10. This snap-fit ​​structure not only enables quick assembly and disassembly of the control board 20 but also effectively limits its position within the power supply housing 10, ensuring accurate and stable installation of the control board 20 inside the power supply housing 10.

[0043] In this embodiment, the dual-row rectifier cover 50 is generally a cover-shaped structure, and its shape is adapted to the opening of the power supply housing 10 to cover and seal the opening portion on the side of the power supply housing 10. The dual-row rectifier cover 50 includes a first mounting portion 51 and a second mounting portion 52. The first mounting portion 51 is located above the dual-row rectifier cover 50, and the second mounting portion 52 is located below the dual-row rectifier cover. The width of the second mounting portion 52 is greater than the width of the first mounting portion 51, so that the second mounting portion 52 protrudes outward relative to the first mounting portion 51 in the horizontal direction.

[0044] In this embodiment, one end of the conductive connector 30 is fitted to the terminal block 40, enabling the introduction of electrical energy from an external power source into the power supply. Simultaneously, processed electrical energy within the power supply can be transmitted to an external load via the terminal block 40, realizing power transmission throughout the entire circuit system. The other end of the conductive connector 30 is soldered to the control board 20. The conductive connector 30 transmits the electrical energy introduced through the terminal block 40 to the control board 20, providing operating power to the control board 20, enabling it to operate normally and perform its control functions. Furthermore, the conductive connector can also transmit control signals from the control board 20 to other related components, achieving precise control of the power supply's operating state.

[0045] The conductive connector 30 can be made of various materials with excellent conductivity, including but not limited to copper sheets, copper alloy sheets, aluminum sheets, and gold-plated copper sheets. These materials ensure that the explosion-proof power supply achieves a stable and reliable electrical connection under various operating conditions. The conductive connector 30 includes a first conductive connector 31 and a second conductive connector 32. The first conductive connector 31 is arranged in the first mounting portion 51 of the double-row rectifier cover 50, and the second conductive connector 32 is arranged in the second mounting portion 52 of the double-row rectifier cover 50. The length of the first conductive connector 31 is greater than the length of the second conductive connector 32. Both the first conductive connector 31 and the second conductive connector 32 are fixed to the control board 20 by welding.

[0046] In this embodiment, the terminal block 40 includes a terminal base 41 and an anti-detachment cover 42. The terminal base 41 has a slot for fixing the conductive connector 30. The anti-detachment cover 42 covers the slot of the terminal base 41, which can effectively prevent the conductive connector 30 from loosening or shifting inside the terminal block 40 due to vibration or external force, thereby ensuring the connection stability between the conductive connector 30 and the terminal block 40.

[0047] In this embodiment, a sealing layer is provided between the dual-row rectifier cover 50 and the dual-row protective cover 60. The sealing layer is applied to the joint interface between the dual-row rectifier cover 50 and the dual-row protective cover 60 to achieve airtight sealing. The sealing layer is made of an adhesive with high elasticity, weather resistance and excellent sealing performance, and is applied to the edge of the dual-row rectifier cover 50 that contacts the dual-row protective cover 60.

[0048] In this embodiment, the dual-row rectifier cover 50 is provided with a circular through hole 53, which is used to fill the inside of the power supply with sand to achieve the explosion-proof function of the explosion-proof power supply. The circular through hole 53 is located in the middle of the second conductive connector 32 and is separated from the second conductive connector 32 to ensure that the filling sand can be smoothly introduced into the inside of the power supply, while avoiding direct contact between the filling sand and the second conductive connector 32.

[0049] In this embodiment, the explosion-proof power supply 100 also includes a knob cover 70, which seals the circular through hole 53 via a snap-fit ​​structure. When sand filling is required for the explosion-proof power supply 100, the knob cover 70 is rotated to open it from the circular through hole 53, separating it from the circular through hole 53 and opening the sand filling channel to smoothly guide the filling sand into the power supply. After the sand filling operation is completed, the knob cover 70 is rotated again to tighten it tightly at the circular through hole 53, thereby restoring the seal on the circular through hole 53 and ensuring the internal sealing and safety of the explosion-proof power supply 100.

[0050] In this embodiment, the dual-row rectifier cover 50 is provided with plastic ribs 54, which are integrally formed on the surface of the dual-row rectifier cover 50 by injection molding. The plastic ribs 54 are arranged at intervals in the horizontal direction, and independent accommodating spaces are formed between adjacent plastic ribs 54, thereby forming an insulating isolation structure for separating the conductive connectors 30. The plastic ribs 54 can not only effectively isolate adjacent conductive connectors 30 to prevent them from contacting each other and causing short circuits, but also provide reliable insulation protection between the conductive connectors 30, ensuring the electrical safety and stability of the power supply device.

[0051] In this embodiment, the dual-row rectifier cover 50 is provided with a second slot, which is located on the inner wall of the dual-row rectifier cover 50. Its shape and size are adapted to the edge contour of the control board. When the control board 20 is installed, its two ends can be accurately inserted into the first slot and the second slot respectively, so that the control board 20 can be tightly fitted with the first slot and the second slot, and the control board 20 can be stably installed inside the power supply housing 10.

[0052] In this embodiment, referring to Figures 5 and 6, the explosion-proof power supply 100 includes a PWM dimming circuit integrated into the control board. This PWM dimming circuit is configured to receive control signals from an external dimmer and adjust the output pulse width according to the signals to adjust the brightness of the connected lighting fixtures. The PWM dimming circuit can accurately receive control signals sent by the external dimmer, including but not limited to analog signals, digital signals, or communication protocol commands. The received control signals are analyzed and processed by a built-in signal processing unit, and the output pulse width is dynamically adjusted based on the analysis results. Specifically, when the external dimmer sends control signals with different duty cycles, the PWM dimming circuit can adjust the duty cycle of its own output pulse accordingly, thereby changing the input power of the connected lighting fixtures to achieve linear or non-linear brightness adjustment. In this way, the PWM dimming circuit can accurately adjust the brightness of the lighting fixtures connected to the explosion-proof power supply 100, thereby meeting the brightness requirements of different lighting scenarios while ensuring a smooth and efficient dimming process.

[0053] In this embodiment, referring to Figures 5 and 6, the explosion-proof power supply 100 is equipped with a current regulating unit. This unit is located outside the power supply housing and includes an adjustable knob on the outer wall of the housing. The adjustable knob is used to adjust the output current value so that the explosion-proof power supply can adapt to loads of different power ratings. Based on actual load requirements, multiple power output modes can be switched within the rated range. Whether it's stable power supply for high-energy-consuming equipment or energy-saving operation of low-power devices, this regulating unit can meet the power requirements under different operating conditions through precise current control, effectively improving the applicability and flexibility of the explosion-proof power supply.

[0054] Example 2:

[0055] Please refer to Figures 7 to 10. Embodiment 2 provides an explosion-proof power supply that can provide a rated power output of 90W, adapting to the power needs of various explosion-proof equipment, such as explosion-proof lighting fixtures and explosion-proof monitoring equipment. The explosion-proof power supply 100 includes a power housing 10, a control board 20, conductive connectors 30, terminals 40, a double-row rectifier cover 50, and a double-row protective cover 60. The power housing 10 has an opening on one side. The control board 20 is fixed inside the power housing 10. The conductive connectors 30 and terminals 40 are correspondingly assembled and fixed to the double-row rectifier cover 50. The conductive connectors 30 are fixed to the control board 20 by welding. The double-row rectifier cover 50 is electrically connected to the control board 20 and fastened to the side opening of the power housing 10. The double-row protective cover 60 is detachably fastened to the side opening of the power housing 10. A closed chamber for accommodating the double-row rectifier cover 50 is formed between the double-row protective cover 60 and the power housing 10.

[0056] In this embodiment, the power supply housing 10 is generally rectangular in shape, and one side of the power supply housing 10 has an opening. A fixing part 11 is provided at the side opening of the power supply housing 10, and the fixing part 11 is formed by extending from the bottom of the power supply housing 10 toward the side opening of the power supply housing 10.

[0057] The power supply housing 10 also has a first slot inside, which is located on the inner wall of the power supply housing 10 and its shape and size are adapted to the edge contour of the control board.

[0058] In this embodiment, the dual-row rectifier cover 50 is generally a cover-shaped structure, and its shape is adapted to the opening of the power supply housing 10 to cover and seal the opening portion on the side of the power supply housing 10. The dual-row rectifier cover 50 includes a second mounting portion 52, which is located below the dual-row rectifier cover.

[0059] In this embodiment, one end of the conductive connector 30 is fitted to the terminal block 40, enabling the introduction of electrical energy from an external power source into the power supply. The other end of the conductive connector 30 is soldered to the control board 20. The conductive connector 30 includes a second conductive connector 32, which is arranged in the second mounting portion 52 of the double-row rectifier cover 50.

[0060] In this embodiment, the terminal block 40 includes a terminal block 41 and an anti-detachment cover 42. The terminal block 41 has a slot for fixing the conductive connector 30, and the anti-detachment cover 42 covers the slot of the terminal block 41.

[0061] In this embodiment, a sealing layer is provided between the dual-row rectifier cover 50 and the dual-row protective cover 60. The sealing layer is applied to the joint interface between the dual-row rectifier cover 50 and the dual-row protective cover 60 to achieve airtight sealing.

[0062] In this embodiment, the dual-row rectifier cover 50 is provided with a circular through hole 53, which is used to fill the inside of the power supply with sand to achieve the explosion-proof function of the explosion-proof power supply. The circular through hole 53 is located in the middle of the second conductive connector 32 and is separated from the second conductive connector 32 to ensure that the filling sand can be smoothly introduced into the inside of the power supply, while avoiding direct contact between the filling sand and the second conductive connector 32.

[0063] In this embodiment, the explosion-proof power supply 100 also includes a knob cover 70, which seals the circular through hole 53 through a snap-fit ​​structure.

[0064] In this embodiment, the dual-row rectifier cover 50 is provided with plastic ribs 54, which are integrally formed on the surface of the dual-row rectifier cover 50 by injection molding. The plastic ribs 54 are arranged at intervals in the horizontal direction, and independent accommodating spaces are formed between adjacent plastic ribs 54, thereby forming an insulating isolation structure for separating the conductive connectors 30.

[0065] In this embodiment, the dual-row rectifier cover 50 is provided with a second slot, which is located on the inner wall of the dual-row rectifier cover 50. Its shape and size are adapted to the edge contour of the control board. When the control board 20 is installed, its two ends can be accurately embedded into the first slot and the second slot respectively, so that the control board 20 and the first slot and the second slot can be tightly fitted.

[0066] In this embodiment, the explosion-proof power supply 100 includes a PWM dimming circuit, which is integrated into the control board and configured to receive control signals from an external dimmer and adjust the output pulse width according to the signal to achieve brightness adjustment of the connected lamps.

[0067] In this embodiment, the explosion-proof power supply 100 is provided with a current adjustment unit, which is located outside the power supply housing and includes an adjustable knob located on the outer side wall of the power supply housing. The adjustable knob is used to adjust the output current value so that the explosion-proof power supply can adapt to loads of different power.

[0068] In this embodiment, referring to Figures 5 and 6, the explosion-proof power supply 100 is equipped with an emergency power supply unit. This unit is located inside the power supply casing and is used to provide temporary power support to the load when the main input power supply fails, ensuring the normal operation of the equipment. The emergency power supply unit includes:

[0069] The power monitoring circuit, integrated into the control board, monitors the status of the main input power supply in real time, including but not limited to voltage, current, and power supply stability. When the main input power supply is normal, the power monitoring circuit continuously monitors its operation; once a power outage or other abnormal situation is detected in the main input power supply, the power monitoring circuit can quickly issue a power-off signal.

[0070] An energy storage device is installed inside the power supply casing. It obtains electrical energy from the main input power supply and charges itself through a charging circuit so that it can provide emergency power support when needed.

[0071] A switching circuit, integrated into the control board, automatically switches power to the energy storage device when the power monitoring circuit detects a main input power failure. Connected to the power monitoring circuit, the switching circuit automatically and quickly switches the load's power supply from the main input power to the energy storage device when a main input power interruption is detected. This ensures the load continues to receive power during a main input power interruption, achieving uninterrupted power supply and guaranteeing normal equipment operation and data security.

[0072] Example 3:

[0073] Please refer to Figures 11 to 14. Embodiment 3 provides an explosion-proof power supply that can provide a rated power output of 240W, adapting to the power needs of various explosion-proof equipment, such as explosion-proof lighting fixtures and explosion-proof monitoring equipment. The explosion-proof power supply 100 includes a power housing 10, a control board 20, conductive connectors 30, terminals 40, a double-row rectifier cover 50, and a double-row protective cover 60. The power housing 10 has an opening on one side. The control board 20 is fixed inside the power housing 10. The conductive connectors 30 and terminals 40 are correspondingly assembled and fixed together to the double-row rectifier cover 50. The conductive connectors 30 are fixed to the control board 20 by welding. The double-row rectifier cover 50 is electrically connected to the control board 20 and fastened to the side opening of the power housing 10. The double-row protective cover 60 is detachably fastened to the side opening of the power housing 10. A closed chamber for accommodating the double-row rectifier cover 50 is formed between the double-row protective cover 60 and the power housing 10.

[0074] In this embodiment, the structure of the explosion-proof power supply is consistent with that described in Embodiment 1. Since the explosion-proof power supply can provide a rated power output of 240W, the power is greater, and more heat is generated. Therefore, its internal power components, such as the double-row rectifier cover, are typically larger. The explosion-proof power supply needs to handle greater current and power, requiring a larger heat dissipation area for effective heat dissipation. Consequently, the dimensions of these components increase to meet the requirements of heat dissipation and electrical performance, resulting in a larger overall power supply volume. The casing also needs to be enlarged to accommodate these components. Therefore, the dimensions of the power supply casing and internal components in this embodiment are slightly larger than those in Embodiment 1.

[0075] In this embodiment, the explosion-proof power supply 100 includes a PWM dimming circuit, which is integrated into the control board and configured to receive control signals from an external dimmer and adjust the output pulse width according to the signal to achieve brightness adjustment of the connected lamps.

[0076] In this embodiment, the explosion-proof power supply 100 is provided with a current adjustment unit, which is located outside the power supply housing and includes an adjustable knob located on the outer side wall of the power supply housing. The adjustable knob is used to adjust the output current value so that the explosion-proof power supply can adapt to loads of different power.

[0077] The explosion-proof power supply provided in this embodiment of the invention provides excellent explosion protection, enabling its use in Class I and Class II Zone 1 and Zone 2 explosive environments with ambient temperatures ranging from -40℃ to +60℃, meeting IP66 protection requirements. This explosion-proof power supply is fully functional, featuring an external current adjustment function that allows for precise adjustment of the output current via a knob to meet the power requirements of different load devices. It also has a PWM brightness adjustment function, allowing for flexible adjustment of the brightness of lighting fixtures via an external dimmer to adapt to various lighting scenarios. Furthermore, this explosion-proof power supply is specially designed with an emergency function that automatically activates in the event of an unexpected power outage, ensuring the equipment continues to operate normally in emergencies and providing reliable emergency protection for users.

[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof power supply, characterized in that, include: The power supply includes a housing, a control board, conductive connectors, terminals, a double-row rectifier cover, and a double-row protective cover. One side of the power supply housing has an opening. The control board is fixed inside the power supply housing. The conductive connectors are correspondingly assembled with the terminals and jointly fixed to the double-row rectifier cover. The conductive connectors are fixed to the control board by welding. The double-row rectifier cover is electrically connected to the control board and fastened to the opening. The double-row protective cover is detachably fastened to the opening. A closed cavity is formed between the double-row protective cover and the power supply housing to accommodate the double-row rectifier cover.

2. The explosion-proof power supply as described in claim 1, characterized in that, The dual-row rectifier cover includes a first mounting portion and a second mounting portion. The first mounting portion is located above the dual-row rectifier cover, and the second mounting portion is located below the dual-row rectifier cover. The width of the second mounting portion is greater than the width of the first mounting portion, so that the second mounting portion protrudes outward relative to the first mounting portion in the horizontal direction.

3. The explosion-proof power supply as described in claim 2, characterized in that, The conductive connector includes a first conductive connector and a second conductive connector. The first conductive connector is arranged in the first mounting portion of the dual-row rectifier cover, and the second conductive connector is arranged in the second mounting portion of the dual-row rectifier cover.

4. The explosion-proof power supply as described in claim 1, characterized in that, The opening is provided with a fixing part, which is formed by extending from the bottom of the power supply housing along the direction toward the side opening of the power supply housing.

5. The explosion-proof power supply as described in claim 1, characterized in that, A sealing layer is provided between the dual-row rectifier cover and the dual-row protective cover. The sealing layer is applied to the joint interface between the dual-row rectifier cover and the dual-row protective cover to achieve airtight sealing.

6. The explosion-proof power supply as described in claim 1, characterized in that, The dual-row rectifier cover has a circular through hole, which is used to fill the inside of the power supply with sand.

7. The explosion-proof power supply as described in claim 6, characterized in that, The explosion-proof power supply also includes a knob cover, which seals the circular through hole through a snap-fit ​​structure.

8. The explosion-proof power supply as described in claim 1, characterized in that, The explosion-proof power supply includes a PWM dimming circuit, which is integrated into the control board and configured to receive control signals from an external dimmer and adjust the output pulse width according to the signals to achieve brightness adjustment of the connected lamps.

9. The explosion-proof power supply as described in claim 1, characterized in that, The explosion-proof power supply is equipped with a current adjustment unit, which is located outside the power supply housing and includes an adjustable knob located on the outer side wall of the power supply housing. The adjustable knob is used to adjust the output current value so that the explosion-proof power supply can adapt to loads of different power.

10. The explosion-proof power supply as described in claim 1, characterized in that, The explosion-proof power supply is equipped with an emergency power supply unit, which is located inside the power supply casing and includes: a power monitoring circuit integrated into the control board to detect the status of the main input power in real time; an energy storage device located inside the power supply casing; and a switching circuit integrated into the control board for automatically switching to the energy storage device for power supply when the power monitoring circuit detects that the main input power is cut off.

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