Mining flame-proof and intrinsic safety type dual-power-supply multi-loop comprehensive protection device

Abstract

The utility model provides a mining flame-proof and intrinsic safety type dual-power-supply multi-loop comprehensive protection device, and belongs to the field of illumination protection devices. The technical problem that a mining explosion-proof and intrinsic safety type dual-power-supply comprehensive protection device is inconvenient to disassemble, replace and maintain is solved. According to the technical scheme, the transformer comprises a box body, the box body comprises a main cavity, a main transformer cavity and a control wiring cavity, a plurality of sets of quick-plug assembly modules are arranged in the main cavity, the structures of the multiple sets of quick-plug assembly modules are the same, and each set of quick-plug assembly module comprises a module unit bottom plate, a contact plate assembly and a module unit shell. A module unit panel, a contact seat guide assembly and a plurality of component assemblies are arranged on the module unit bottom plate, the module unit bottom plate is fixed on the guide rail through a fixing device, a plurality of contact seats are arranged on the contact plate assembly, the contact seats are electrically connected with the component assemblies, and the contact plate assembly is matched with the contact seat guide assembly. A plurality of sliding wheels are arranged on the guide rail; the utility model is applied to the lighting protection device.

Description

Technical Field

[0001] The utility model provides a mine-used flameproof and intrinsically safe dual-power supply multi-circuit comprehensive protection device, belonging to the field of lighting protection devices. Background Art

[0002] In recent years, in order to adapt to the construction of smart mine control systems, a number of digital, automated and efficient coal mines have been built. The demand for 127V power supply equipment underground is increasing. At present, the 127V power supply equipment is relatively simple and difficult to operate and control. It is reflected in the inability to completely independently control the signal output power supply and lighting output power supply. At the same time, it does not have a dual power switching function and cannot meet the uninterrupted power supply needs of the 127V power supply equipment, causing great inconvenience to use.

[0003] Based on this, the comparative document (CN219395356U) provides a dual-power lighting comprehensive protection device, but its circuit structure is integrated in the cavity in the explosion-proof box. Due to the small space of the cavity, it is inconvenient to disassemble and maintain. Utility Model Content

[0004] In order to solve the technical problem of inconvenient disassembly, replacement and maintenance of a flameproof and intrinsically safe dual-power integrated protection device for mines, the utility model proposes a flameproof and intrinsically safe dual-power multi-circuit integrated protection device for mines with convenient disassembly and maintenance operations. The purpose is to improve the hardware structure and / or circuit structure of the lighting protection device so that the lighting protection device has a dual power switching function while being easy to maintain and mass produce.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a mine flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device, including a box body, the box body includes a main chamber, a main transformer chamber, and a control wiring chamber, the main chamber is provided with an incoming line chamber, a pilot module and a plurality of sets of quick-plug assembly modules, and the structures of the plurality of sets of quick-plug assembly modules are the same; the control wiring chamber is provided with a wiring row;

[0006] The quick-plug assembly module includes a module unit base plate, a contact plate assembly and a module unit housing;

[0007] The module unit bottom plate is provided with a module unit panel, a contact seat guide assembly and a plurality of component assemblies, and the module unit bottom plate is fixed to the guide rail through a fixing device; the fixing device includes a nut seat, a screw seat and a screw, the screw seat is fastened to the nut seat through the screw, and the module unit bottom plate is fastened to the guide rail through the nut seat;

[0008] The contact plate assembly is provided with a plurality of contact seats, and the contact seats are electrically connected to the component assembly;

[0009] The contact plate assembly and the contact seat guide assembly cooperate with each other;

[0010] The wire inlet cavity comprises a first wire inlet cavity and a second wire inlet cavity;

[0011] A plurality of sliding wheels are arranged on the guide rail.

[0012] Furthermore, a door cover is provided on the main cavity, and the door cover is a bolt-fastened type; a display screen, a barrier, a metal operating keyboard and a plurality of operating button components are provided on the door cover.

[0013] Furthermore, a line-incoming device is provided in both the first line-incoming cavity and the second line-incoming cavity, and the line-incoming device includes an incoming line terminal, an outgoing line terminal, an isolating reversing switch, and a control transformer; a main transformer is provided in the main transformer cavity, and an incoming line terminal and an outgoing line terminal are provided at the incoming line end of the main transformer.

[0014] Furthermore, eight sets of quick-plug assembly modules are arranged in the main cavity, specifically six sets of contactor assembly modules, one set of power supply assembly module and one set of switching protection assembly module.

[0015] Furthermore, the module unit housing is provided with a plurality of through holes.

[0016] Furthermore, the box body is also provided with a handle assembly, a knob and an emergency stop button, and the handle assembly includes a first handle and a second handle.

[0017] Furthermore, a bracket is provided at the bottom of the box.

[0018] Furthermore, the box body is also provided with a mine flameproof cable connector, an internal grounding device, an external grounding device and a plurality of inspection doors.

[0019] Furthermore, an observation window is provided on the box body.

[0020] Furthermore, the material of the box is Q235A, and the wall thickness of the box is ≥10mm.

[0021] The beneficial effects of the present invention compared with the prior art are as follows:

[0022] 1. The modular setting of the quick-plug assembly module of the utility model makes it simple and convenient to replace and maintain the lighting integrated protection device, and can be mass-produced;

[0023] 2. The guide rail of the utility model is provided with a plurality of sliding wheels, which facilitates the pushing and pulling of the module unit bottom plate and the components thereon, and makes it easier to maintain and replace the module unit bottom plate and the components thereon, saving time and effort;

[0024] 3. The dual power supply of the utility model can provide uninterrupted power supply to the system;

[0025] 4. The number of contact seats on the contact board assembly of the utility model can be set according to user needs to achieve multi-circuit introduction and multi-circuit output to control the operation of various components and make the wiring neat and beautiful, overcoming the defects of the small cavity space and difficult wiring of the explosion-proof box in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0028] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0029] Figure 3 The structure of the utility model is shown in FIG. Figure 3 ;

[0030] Figure 4 This is a schematic diagram of the structure of the quick-plug assembly module of the utility model;

[0031] Figure 5 It is an exploded view of the quick-plug assembly module of the utility model;

[0032] Figure 6 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0033] Figure 7 for Figure 2 A schematic diagram of the enlarged structure of part B;

[0034] In the figure: 1 is the main chamber, 2 is the door cover, 3 is the first handle, 4 is the second handle, 5 is the first incoming line chamber, 6 is the second incoming line chamber, 7 is the main transformer chamber, 8 is the control wiring chamber, 9 is the bracket, 10 is the display screen, 11 is the knob, 12 is the pilot module, 13 is the operation button assembly, 14 is the emergency stop button, 15 is the incoming line device, 16 is the contactor assembly module, 17 is the power supply assembly module, 18 is the switching protection assembly module, 19 is the isolation fence, 20 is Main transformer, 21 is a terminal block, 22 is a mine flameproof cable connector, 23 is an external grounding device, 24 is an internal grounding device, 25 is a guide rail, 26 is a sliding wheel, 27 is a lead screw, 28 is a handle, 29 is a lead screw seat, 30 is a nut seat, 31 is a power supply unit panel, 32 is a module unit bottom plate, 33 is a module unit housing, 34 is a component assembly, 35 is a contact plate assembly, 36 is a contact seat, 37 is a contact seat guide assembly, and 38 is a box body. DETAILED DESCRIPTION

[0035] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0036] like Figures 1 to 7 As shown, the utility model provides a mine flameproof and intrinsically safe dual power supply multi-circuit comprehensive protection device, including a box 38, the material of the box 38 is Q235A, the wall thickness of the box 38 is ≥10mm, and the interior of the box 38 is also provided with an intrinsically safe plug-in, which has the function of explosion-proof and flameproof. The box 38 includes a main chamber 1, and a pilot module 12 and a plurality of quick-plug assembly modules are arranged in the main chamber 1. The plurality of quick-plug assembly modules have the same structure, and their sizes can be set to be the same, and can also be adaptively adjusted as needed. Two inlet cavities are arranged on the right side of the quick-plug assembly module, and a set of inlet devices 15 are arranged in the two inlet cavities. A control wiring chamber 8, a main transformer chamber 7, a mine flameproof cable connector 22 and an external grounding device 23 are arranged at the rear of the main chamber 1, and a wiring row 21 and an internal grounding device 24 are arranged in the control wiring chamber 8. A door cover 2 is hinged on the main cavity 1. The door cover 2 is located at the front end of the box body 38. The door cover 2 is a bolt-fastened type. A display screen 10, a barrier 19, a metal operating keyboard and a 24-position operating button assembly 13 are arranged on the door cover 2.

[0037] In this embodiment, eight sets of quick-plug assembly modules are provided, specifically six sets of contactor assembly modules 16 , one set of power supply assembly module 17 and one set of switching protection assembly module 18 .

[0038] The contactor assembly module 16 includes a dual-circuit combined lighting comprehensive protection device with functions such as short circuit, overload, undervoltage, overvoltage, leakage lockout, etc. Each set of contactor assembly modules 16 includes at least the first protector, the first current transformer, the contactor, the first relay, and the first leakage module electrical components; the power supply assembly module 17 includes at least the first circuit breaker, the control transformer, the DC power supply module, and the second relay electrical components; the switching protection assembly module 18 includes at least the second protector, the third circuit breaker, the current transformer, the leakage module and other electrical components.

[0039] Each set of quick-plug assembly modules includes a module unit base plate 32, a contact plate assembly 35 and a module unit housing 33. The module unit base plate 32 is provided with a detachable module unit panel 31, a contact seat guide assembly 37 and a plurality of component assemblies 34. The number of component assemblies 34 is set according to user needs. The module unit base plate 32 is fixed to the guide rail 25 by a fixing device. The fixing device includes a nut seat 30, a screw seat 29 and a screw 27. The screw seat 29 is fastened to the nut seat 30 by the screw 27. The module unit base plate 32 is fastened to the guide rail 25 by the nut seat 30. A plurality of contact seats 36 are fixed to the contact plate assembly 35. The contact plate assembly 35 cooperates with the contact seat guide assembly 37. The contact plate assembly 35 positions the module unit base plate 32 and the various components arranged thereon and then fixes them by the screw 27. The module unit housing 33 is fixed to the guide rail 25 by bolts, and the module unit housing 33 covers the entire module unit bottom plate 32 and the components arranged thereon, so that the quick-plug assembly module becomes a whole. The module unit housing 33 is provided with a plurality of through holes for heat dissipation.

[0040] The contact holder 36 is electrically connected to the component assembly 34. The number of contact holders 36 can be set according to user needs to achieve multi-circuit introduction and multi-circuit output to control the operation of each component assembly 34, making the wiring neat and beautiful, overcoming the defects of the small cavity space and difficult wiring of the explosion-proof box in the prior art.

[0041] In order to facilitate the push-pull of the module unit bottom plate 32 and the components thereon, and to make it easier to maintain and replace the module unit bottom plate 32 and the components thereon, saving time and effort, a plurality of sliding wheels 26 are also fixed to the guide rail 25 by bolts. In the utility model, four sliding wheels 26 are fixed to the guide rail 25. In order to facilitate the maintenance and replacement of the quick-plug assembly module, a handle 28 is also fixedly connected to the screw seat 29.

[0042] The main transformer 20 is placed in the main transformer cavity 7, and the incoming end of the main transformer 20 is provided with incoming terminals A, B, C, and the outgoing end of the main transformer 20 is provided with outgoing terminals a, b, c. The incoming cavity includes a first incoming cavity 5 and a second incoming cavity 6, and each of the first incoming cavity 5 and the second incoming cavity 6 is provided with an inspection door. The incoming device 15 includes a first incoming device and a second incoming device, wherein the first incoming device is placed in the first incoming cavity 5, and the second incoming device is placed in the second incoming cavity 6. The first incoming device includes incoming wiring terminals U11, V11, W11, isolating phase-changing switch QS1, control transformer T1, contactor KM1, and outgoing wiring terminals U12, V12, W12; the second incoming devices include incoming wiring terminals U21, V21, W21, isolating phase-changing switch QS2, control transformer T2, contactor KM2, and outgoing wiring terminals U22, V22, W22.

[0043] The switching protection assembly module 18 includes a dual power switching comprehensive protection device, which has the functions of short circuit, overload, undervoltage, overvoltage, leakage, leakage lockout, gas lockout, wind power lockout, abnormal closing, over-temperature protection and the like.

[0044] A bracket 9 is provided at the bottom of the box 38. An observation window is provided at the top of the box 38 to facilitate observation of the operating status of the internal components. Several inspection doors are provided on the box 38 for easy inspection. In this embodiment, three inspection doors are provided on the main chamber 1, which are respectively provided on the side of the quick-plug assembly module, the side of the first incoming line chamber 5, and the side of the second incoming line chamber 6. An inspection door is provided on each side of the main transformer chamber 7 and the control wiring chamber 8.

[0045] The quick-plug assembly module placed in the box 38 of the utility model is integrated. When replacing and maintaining the quick-plug assembly module of the utility model, it is only necessary to take out the quick-plug assembly module that needs to be replaced and maintained from the box 38 for replacement and maintenance. In order to facilitate the operation of the construction personnel, the utility model is also provided with a handle. And the setting of the guide rail 25 and the sliding wheel 26 thereon of the utility model makes it easier to assemble and disassemble the module unit bottom plate 32 and the various components thereon. When the module unit bottom plate 32 to be assembled is assembled along the guide rail 25, the contact guide seat assembly positions the module unit bottom plate 32 and the various components arranged thereon, and then fixes it through the screw 27, and finally fixes the module unit housing 33 on the guide rail 25, so that the quick-plug assembly module becomes a whole.

[0046] The door cover 2 of the box body 38 is also provided with a knob 11, which is electrically connected to the metal operation keyboard. A handle assembly for operating the isolating switch is fixed on the box body 38 on the same side as the door cover 2, and an emergency stop button 14 is fixed on the handle assembly, which cooperates with a reliable mechanical interlocking device to ensure that when the isolating switch is closed, the door cover 2 cannot be opened. The handle assembly includes a first handle 3 and a second handle 4, which respectively control the second incoming line device and the first incoming line device.

[0047] The first incoming line device and the second incoming line device are electrically connected to the main transformer 20, the main transformer 20 is electrically connected to the quick-plug assembly module, the power assembly module 17 is electrically connected to the switching protection assembly module 18 and the display screen 10,

[0048] The first handle 3 or the second handle 4 is rotated to the "closing" position, the first incoming line device or the second incoming line device control transformer is energized to supply power to the power assembly module 17, the power assembly module 17 outputs DC24V and DC12V voltages to supply power to the switching protection assembly module 18 and the display screen 10 respectively, the switching protection assembly module 18 performs self-check after being energized, when the knob 11 is turned to the working state, the contactor KM1 of the first incoming line device or the contactor KM2 of the second incoming line device is energized, the main transformer 20 is energized, and the 127V power supply is output to supply power to the contactor assembly module 16, the intrinsically safe plug-in and the double-circuit combined lighting comprehensive protection device in the contactor assembly module 16 are energized, at this time, the protection system is in the functional self-check and insulation monitoring state, if the controlled circuit does not have setting parameter errors and leakage lockout, overload, short circuit and other faults, press the corresponding closing button on the operating button assembly 13, the main contactor attracts the coil, the main contactor closes, and the entire control is completed.

[0049] The utility model converts 1140V and 660V power supplies into 127V in a three-phase power supply system with a rated frequency of 50Hz, a rated voltage of 1140V and 660V and an ungrounded neutral point, and serves as a power supply control and protection for multi-circuit 127V lighting and signal loads. It has leakage, short circuit and other protection functions and is suitable for underground coal mines containing methane mixed gas and with explosion hazards, and can provide uninterrupted power supply for underground coal mine detection and monitoring systems, drainage systems, etc.

[0050] Regarding the specific structure of the utility model, it should be explained that the connection relationship between the various component modules adopted in the utility model is definite and feasible. Except for special instructions in the embodiments, the specific connection relationship can bring corresponding technical effects and solve the technical problems raised by the utility model without relying on the execution of corresponding software programs. The components, modules, models of specific components and the connection methods between each other appearing in the utility model, as well as the conventional use methods and expected technical effects brought about by the above-mentioned technical features, except for specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technologies and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete and feasible, and the corresponding physical products can be reproduced or obtained according to the technical means.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A mine flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device, characterized by: The invention comprises a box body (38), wherein the box body (38) comprises a main chamber (1), a main transformer chamber (7), and a control wiring chamber (8); the main chamber (1) is provided with an inlet chamber, a pilot module (12), and a plurality of sets of quick-plug assembly modules, wherein the plurality of sets of quick-plug assembly modules have the same structure; and the control wiring chamber (8) is provided with a wiring row (21); The quick-plug assembly module comprises a module unit base plate (32), a contact plate assembly (35) and a module unit housing (33); The module unit base plate (32) is provided with a module unit panel (31), a contact seat guide assembly (37) and a plurality of component assemblies (34); the module unit base plate (32) is fixed to the guide rail (25) via a fixing device; the fixing device comprises a nut seat (30), a screw seat (29) and a screw (27); the screw seat (29) is fastened to the nut seat (30) via the screw (27); and the module unit base plate (32) is fastened to the guide rail (25) via the nut seat (30); A plurality of contact seats (36) are provided on the contact plate assembly (35), and the contact seats (36) are electrically connected to the component assembly (34); The contact plate assembly (35) and the contact seat guide assembly (37) cooperate with each other; The wire inlet cavity comprises a first wire inlet cavity (5) and a second wire inlet cavity (6); A plurality of sliding wheels (26) are arranged on the guide rail (25).

2. According to claim 1, a mine flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device is characterized by: The main chamber (1) is provided with a door cover (2), and the door cover (2) is of a bolt-fastened type; the door cover (2) is provided with a display screen (10), a barrier (19), a metal operation keyboard, and a plurality of operation button assemblies (13).

3. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: A line inlet device (15) is disposed in both the first line inlet cavity (5) and the second line inlet cavity (6), the line inlet device (15) comprising an incoming line connection terminal, an outgoing line connection terminal, an isolating reversing switch, and a control transformer; a main transformer (20) is disposed in the main transformer cavity (7), and an incoming line terminal and an outgoing line terminal are disposed at the incoming line end of the main transformer (20).

4. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: Eight sets of quick-plug assembly modules are arranged in the main chamber (1), specifically six sets of contactor assembly modules (16), one set of power supply assembly module (17) and one set of switching protection assembly module (18).

5. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: The module unit housing (33) is provided with a plurality of through holes.

6. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: The box body (38) is also provided with a handle assembly, a knob (11) and an emergency stop button (14), and the handle assembly comprises a first handle (3) and a second handle (4).

7. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: A bracket (9) is provided at the bottom of the box body (38).

8. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: The box body (38) is also provided with a mine flameproof cable connector (22), an internal grounding device (24), an external grounding device (23) and a plurality of inspection doors.

9. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1 is characterized in that: The box body (38) is provided with an observation window.

10. The flameproof and intrinsically safe dual-power multi-circuit comprehensive protection device for mining according to claim 1, characterized in that: The material of the box body (38) is Q235A, and the wall thickness of the box body (38) is ≥10 mm.

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