Mining flame-proof safety type combined variable-frequency starter

Abstract

The utility model discloses a mining explosion-proof safety type combined frequency conversion starter, comprising a housing which comprises a junction box, a rectifier box and an inverter box. The junction box and the rectifier box are of an integrated structure, a door spindle assembly is installed on the adjacent faces of the inverter box and the rectifier box, and the inverter box is rotationally connected with the rectifier box through the door spindle assembly. According to the utility model, the inverter box and the rectifier box can be combined through the door spindle assembly, so that a corresponding installation mode can be selected according to the actual situation on site during installation, the inverter box can be independently disassembled during disassembly, and the inverter box can be conveniently carried and the time and labor costs are reduced due to the fact that the inverter box can be independently disassembled; by arranging the quick-opening door on the rectifier box, the machine shell can be conveniently and quickly opened and closed, use in emergency situations is facilitated, and when the quick-opening door is opened, quick opening of the quick-opening door can be achieved by rotating the locking rod so that corresponding operation can be conveniently carried out.

Description

Technical Field

[0001] The utility model relates to a variable frequency starter, in particular to a mine-used explosion-proof safety combined variable frequency starter, belonging to the technical field of starters. Background Art

[0002] The explosion-proof and safe variable frequency starter for mining is a high-tech product that integrates a digital variable frequency speed control inverter and related heat dissipation technology, offering both explosion-proof and intrinsically safe characteristics. It is suitable for use in coal mines and other environments with explosion hazards such as coal dust and gas, and can achieve variable frequency speed control of AC motors. The explosion-proof and safe variable frequency starter for mining is widely used in equipment such as underground coal mine hoists, belt conveyors, scraper conveyors, fans, and pump stations. It is suitable for heavy-load soft starting, soft stopping, speed control during operation, and function curve operation control of asynchronous motors with an AC frequency of 50Hz and a rated voltage of 1140 (660)V.

[0003] The existing safety variable frequency starters are large in size, and the starter casings are all integrated structures. During installation, it is impossible to select the corresponding installation method according to the actual situation on site. The installation method is single, and the disassembly process is relatively complicated. The overall volume is large and it is inconvenient to carry it. During installation, disassembly and transportation, it requires a lot of time and manpower costs. Therefore, a mine explosion-proof safety combined variable frequency starter is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a mine flameproof safety combined variable frequency starter to solve one of the problems raised in the above background technology.

[0005] The utility model is implemented by the following technical solutions: a mine flameproof safety combined variable frequency starter, comprising a casing, the casing comprising a junction box, a rectifier box and an inverter box;

[0006] The junction box and the rectifier box are an integrated structure, and the adjacent surfaces of the inverter box and the rectifier box are jointly installed with a door shaft assembly. The inverter box is rotatably connected to the rectifier box through the door shaft assembly. The front surface of the junction box is installed with a junction chamber door, and the front surfaces of the rectifier box are respectively installed with a quick-opening door and a rectifier chamber door. The front surface of the quick-opening door is installed with a locking rod. The front surface of the inverter box is symmetrically installed with a left door and a right door. The front surfaces of the junction chamber door, the rectifier chamber door, the left door and the right door are all installed with folding handles. The upper surfaces of the junction box, the rectifier box and the inverter box are all installed with water baffles, and the rectifier box and the inverter box are connected to each other.

[0007] As a further preferred embodiment of the present technical solution: a first conductor holder and a second conductor holder are equidistantly installed on one side of the junction box, and both the first conductor holder and the second conductor holder are connected to the junction box.

[0008] As a further preferred embodiment of the present technical solution: flameproof cable connectors are equidistantly installed on an upper portion of one side of the inverter box, and rubber shock absorbers are installed on surfaces of the inverter box and the junction box that are spaced apart from each other.

[0009] As a further preferred embodiment of the present technical solution: an installation partition is provided between the junction box and the inverter box, and nine-core terminal blocks, three-phase current transformers and fork-type terminal blocks are evenly installed inside the installation partition.

[0010] As a further preferred embodiment of the present technical solution: a terminal block is installed inside the junction box.

[0011] As a further preferred embodiment of the present technical solution: a circuit breaker, a control box, a rectifier module and a charging resistor are installed inside the rectifier box, a rectifier unit water-cooling plate is installed on the outer wall of the rectifier module, and an electrical installation plate is installed on the rear surface of the quick-opening door.

[0012] As a further preferred embodiment of the present technical solution: an inverter module is installed inside the inverter box, and an inverter unit water-cooling plate is installed on the outer side wall of the inverter module.

[0013] As a further preferred embodiment of the present technical solution: a control power supply and a power supply partition are installed inside the mounting partition, the power supply partition is located outside the control power supply, a vacuum module is installed inside the rectifier box, and a capacitor module and a leakage detection module are installed inside the inverter box.

[0014] Advantages of this utility model:

[0015] 1. The utility model can combine the inverter box and the rectifier box through the door shaft assembly. When installing, the corresponding installation method can be selected according to the actual situation on site. When disassembling, the inverter box can be disassembled separately. Since it can be disassembled separately, the overall volume of the disassembled box becomes smaller, which facilitates its transportation and reduces time and labor costs.

[0016] 2. The utility model provides a quick-opening door on the rectifier box, which facilitates the quick opening and closing of the casing, and is beneficial for use in emergency situations. When the quick-opening door is opened, the quick-opening door can be quickly opened by rotating the locking rod to perform corresponding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a left view of the utility model;

[0020] Figure 3 It is a right side view of the utility model;

[0021] Figure 4 For this utility model Figure 1 Middle BB direction view;

[0022] Figure 5 For this utility model Figure 1 Middle AA direction view;

[0023] Figure 6 It is a schematic diagram of the internal structure of the utility model.

[0024] In the figure: 1, housing; 101, junction box; 102, rectifier box; 103, inverter box; 104, mounting plate; 2, junction box door; 3, rectifier box door; 11, quick-open door; 4, left door; 5, right door; 6, door shaft assembly; 99, folding handle; 24, locking rod; 16, water baffle; 49, first wire holder; 50, second wire holder; 56, rubber shock absorber; 58, flameproof cable connector; 59, nine-core connector Line terminal; 60, three-phase current transformer; 61, fork-type terminal block; 7, circuit breaker; 41, electrical installation panel; 44, control box; 45, rectifier unit water-cooling plate; 46, inverter unit water-cooling plate; 8, vacuum module; 26, power supply partition; 27, charging resistor; 201, inverter module; 202, rectifier module; 203, terminal block; 204, capacitor module; 206, leakage detection module; 207, control power supply. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example

[0027] See also Figures 1-6 The utility model provides a technical solution: a mine flameproof safety combined variable frequency starter, comprising a casing 1, the casing 1 comprising a junction box 101, a rectifier box 102 and an inverter box 103;

[0028] The junction box 101 and the rectifier box 102 are of an integrated structure. The adjacent surfaces of the inverter box 103 and the rectifier box 102 are jointly installed with a door shaft assembly 6. The inverter box 103 is rotatably connected to the rectifier box 102 through the door shaft assembly 6.

[0029] The inverter box 103 and the rectifier box 102 can be combined through the door shaft assembly 6. When installing, the corresponding installation method can be selected according to the actual situation on site. When disassembling, the inverter box 103 can be disassembled separately, which is convenient for carrying and reduces time and labor costs.

[0030] The front surface of the junction box 101 is installed with a junction chamber door 2, the front surface of the rectifier box 102 is installed with a quick-opening door 11 and a rectifier chamber door 3, respectively. The front surface of the quick-opening door 11 is installed with a locking rod 24, and the front surface of the inverter box 103 is symmetrically installed with a left door 4 and a right door 5;

[0031] The wiring chamber door 2, quick-opening door 11, rectifier chamber door 3, left door 4 and right door 5 can be used to seal and protect the wiring box 101, rectifier box 102 and inverter box 103. The quick-opening door 11 can be quickly opened by rotating the locking rod 24 to perform corresponding operations.

[0032] The front surfaces of the wiring chamber door 2, the rectifier chamber door 3, the left door 4 and the right door 5 are all equipped with folding handles 99, and the upper surfaces of the wiring box 101, the rectifier box 102 and the inverter box 103 are all equipped with water baffles 16. The rectifier box 102 and the inverter box 103 are interconnected. The folding handles 99 facilitate the opening of the sealed doors at different positions of the whole, which facilitates operation, and the water baffles 16 can prevent water from dripping into the inside of the casing 1.

[0033] In this embodiment, specifically: a first wire holder 49 and a second wire holder 50 are equidistantly installed on one side of the junction box 101. The first wire holder 49 and the second wire holder 50 are both connected to the junction box 101. The first wire holder 49 and the second wire holder 50 can guide the cables entering the junction box 101 to avoid cable clutter.

[0034] In this embodiment, specifically: flameproof cable connectors 58 are equidistantly installed on the upper part of one side of the inverter box 103, and rubber shock absorbers 56 are installed on the surfaces away from each other of the inverter box 103 and the junction box 101. The inverter box 103 and the junction box 101 are in contact with the ground through the rubber shock absorbers 56, thereby enhancing the overall stability of the casing 1.

[0035] In this embodiment, specifically: an installation partition 104 is provided between the junction box 101 and the inverter box 103, and nine-core terminal blocks 59, three-phase current transformers 60 and fork-type terminal blocks 61 are evenly installed inside the installation partition 104. By installing the partition 104, the junction box 101 can be separated from the rectifier box 102, thereby achieving an isolation effect.

[0036] In this embodiment, specifically: a terminal block 203 is installed inside the junction box 101 , and the terminal block 203 is used to connect cables.

[0037] In this embodiment, specifically: the interior of the rectifier box 102 is installed with a circuit breaker 7, a control box 44, a rectifier module 202 and a charging resistor 27, the outer wall of the rectifier module 202 is installed with a rectifier unit water-cooling plate 45, and the rear surface of the quick-opening door 11 is installed with an electrical installation board 41. The input AC power can be converted into DC power through the rectifier module 202, and the rectifier module 202 can be cooled and dissipated through the rectifier unit water-cooling plate 45.

[0038] In this embodiment, specifically: an inverter module 201 is installed inside the inverter box 103, and an inverter unit water-cooling plate 46 is installed on the outer wall of the inverter module 201. The inverter module 201 can convert direct current into alternating current output with adjustable frequency and voltage. By controlling the switching time and frequency of the inverter module 201, the output frequency and voltage can be accurately adjusted, thereby meeting the control requirements of mining equipment for the motor.

[0039] In this embodiment, specifically: a control power supply 207 and a power supply partition 26 are installed inside the installation partition 104, the power supply partition 26 is located outside the control power supply 207, a vacuum module 8 is installed inside the rectifier box 102, and a capacitor module 204 and a leakage detection module 206 are installed inside the inverter box 103. The capacitor module 204 can store and provide DC power, and the leakage detection module 206 can monitor the leakage in the variable frequency starter.

[0040] The working principle or structural principle is that when in use, during installation, the inverter box 103 and the rectifier box 102 can be combined through the door shaft assembly 6, and then the corresponding installation method can be selected according to the actual situation on site. The cables entering the junction box 101 can be guided by the first wire holder 49 and the second wire holder 50. After the lines are connected, the inverter module 201 can convert direct current into alternating current output with adjustable frequency and voltage. By controlling the switching time and frequency of the inverter module 201, the output frequency and voltage can be accurately adjusted, thereby meeting the control requirements of the mining equipment for the motor, and the leakage detection module 206 can monitor the leakage in the variable frequency starter.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mine flameproof safety combined variable frequency starter, characterized in that: The housing (1) comprises a junction box (101), a rectifier box (102) and an inverter box (103); The junction box (101) and the rectifier box (102) are of an integrated structure. Adjacent surfaces of the inverter box (103) and the rectifier box (102) are commonly installed with a door shaft assembly (6). The inverter box (103) is rotatably connected to the rectifier box (102) via the door shaft assembly (6). A junction chamber door (2) is installed on the front surface of the junction box (101). A quick-opening door (11) and a rectifier chamber door (3) are respectively installed on the front surface of the rectifier box (102). The quick-opening door (11) is a door that opens and closes when the rectifier box (102) is opened. ) is installed on the front surface of the inverter box (103), a left door (4) and a right door (5) are symmetrically installed on the front surface of the wiring chamber door (2), the rectifier chamber door (3), the left door (4) and the right door (5), and a folding handle (99) is installed on the front surfaces of the wiring chamber door (2), the rectifier chamber door (3), the left door (4) and the right door (5). The upper surfaces of the wiring box (101), the rectifier box (102) and the inverter box (103) are all installed with a water baffle (16), and the rectifier box (102) and the inverter box (103) are connected to each other.

2. A mine flameproof safety combined variable frequency starter according to claim 1, characterized in that: A first wire holder (49) and a second wire holder (50) are equidistantly installed on one side of the junction box (101), and both the first wire holder (49) and the second wire holder (50) are in communication with the junction box (101).

3. A mine flameproof safety combined variable frequency starter according to claim 2, characterized in that: Flameproof cable connectors (58) are equidistantly installed on the upper portion of one side of the inverter box (103), and rubber shock absorbers (56) are installed on the surfaces of the inverter box (103) and the junction box (101) that are spaced apart from each other.

4. A mine flameproof safety combined variable frequency starter according to claim 3, characterized in that: An installation partition (104) is provided between the junction box (101) and the inverter box (103), and nine-core wiring terminals (59), a three-phase current transformer (60), and a fork-type wiring terminal (61) are evenly installed inside the installation partition (104).

5. A mine flameproof safety combined variable frequency starter according to claim 4, characterized in that: A terminal block (203) is installed inside the junction box (101).

6. The explosion-proof safety combined variable frequency starter for mining according to claim 1, characterized in that: A circuit breaker (7), a control box (44), a rectifier module (202), and a charging resistor (27) are installed inside the rectifier box (102); a rectifier unit water cooling plate (45) is installed on the outer side wall of the rectifier module (202); and an electrical installation plate (41) is installed on the rear surface of the quick-opening door (11).

7. A mine flameproof safety combined variable frequency starter according to claim 6, characterized in that: An inverter module (201) is installed inside the inverter box (103), and an inverter unit water cooling plate (46) is installed on the outer side wall of the inverter module (201).

8. The explosion-proof safety combined variable frequency starter for mining according to claim 4, characterized in that: A control power supply (207) and a power supply partition (26) are installed inside the mounting partition (104), and the power supply partition (26) is located outside the control power supply (207). A vacuum module (8) is installed inside the rectifier box (102), and a capacitor module (204) and a leakage detection module (206) are installed inside the inverter box (103).

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