Modularized machine core of mining explosion-proof frequency converter

Abstract

The invention relates to the technical field of mining explosion-proof frequency converters, and discloses a modular machine core of a mining explosion-proof frequency converter, which comprises a heat dissipation module, a mounting plate, a power conversion module, an assembly frame, a capacitor module, a driving module, a power supply module, a power module, a top plate and a mounting bolt. According to the modularized machine core of the mining explosion-proof frequency converter, the assembling frame, the capacitor module, the driving module, the power supply module, the power module and the top plate are connected and fixed through the fasteners, so that the device is high in integration degree, the modules are integrated into a whole according to requirements, the whole machine core is convenient to disassemble and assemble, the maintenance time is saved, the modularized design is adopted, and the maintenance cost is reduced. When a fault occurs, only a single module needs to be replaced, the downtime can be shortened, all the modules are connected through different supporting frames, the isolation design can limit explosion risk diffusion and meet the anti-explosion standard, and due to the fact that the modules are connected through the supporting frames, the number of the modules can be reduced or increased according to requirements, and follow-up upgrading is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof inverters for mines, and specifically to a modular core of an explosion-proof inverter for mines. Background Art

[0002] The explosion-proof inverter for mines is a core device for the intelligent upgrading of coal mines. Its design needs to meet the requirements of explosion-proof, dust-proof, and moisture-proof in the harsh underground working environment, and at the same time needs to meet the high-efficiency control requirements of industrial automation. Among them, the core of the explosion-proof inverter for mines is a complex system integrating power electronics, automatic control, and explosion-proof technology, and its performance directly affects the safe production and energy efficiency level of the mine.

[0003] However, in actual use, the existing technology has the following problems:

[0004] At present, explosion-proof inverters on the market have strict requirements for safety performance, and the core needs to adapt to various explosion-proof enclosures and explosion-proof environments, etc. As a result, the functions of the core of the explosion-proof inverter for mines are complex and the assembly structures are diverse. Therefore, actual assembly and maintenance are inconvenient and costly, and the existing cores on the market cannot meet the replacement of the positions of internal components, making it impossible for users to adjust the core according to the explosion-proof enclosure of their own explosion-proof inverter, resulting in certain waste after procurement and low applicability at the same time. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In order to overcome the above defects of the existing technology, the present invention provides a modular core of an explosion-proof inverter for mines, which solves the problems in the existing technology:

[0007] At present, explosion-proof inverters on the market have strict requirements for safety performance, and the core needs to adapt to various explosion-proof enclosures and explosion-proof environments, etc. As a result, the functions of the core of the explosion-proof inverter for mines are complex and the assembly structures are diverse. Therefore, actual assembly and maintenance are inconvenient and costly, and the existing cores on the market cannot meet the replacement of the positions of internal components, making it impossible for users to adjust the core according to the explosion-proof enclosure of their own explosion-proof inverter, resulting in certain waste after procurement and low applicability at the same time.

[0008] (II) Technical Solutions

[0009] To achieve the above object, the present invention is realized through the following technical solutions: A modular core of an explosion-proof inverter for mines, comprising:

[0010] A heat dissipation module, which is a copper tube multi-tower radiator for dissipating heat from the core;

[0011] The mounting plate is arranged on the top of the heat dissipation module and is used to conveniently fix the movement inside the explosion-proof frequency converter.

[0012] There are multiple power conversion modules, which are fixedly installed in the middle of the top of the mounting plate through fasteners. It includes an IGBT module, which can achieve efficient conversion of electrical energy and adjust and control the power.

[0013] The assembly frame is fixedly installed on the top of the mounting plate through fasteners and is placed around multiple power conversion modules for protecting the power conversion modules.

[0014] The capacitor module is fixedly installed on the top of the assembly frame through fasteners and is used to filter out the ripple voltage after rectification to make the output voltage more stable.

[0015] The drive module is fixedly installed on the top of the capacitor module through fasteners. The drive module includes: a first support frame and a first drive board, and the first drive board is fixedly installed inside the first support frame through mounting bolts.

[0016] The power supply module is fixedly installed on the top of the drive module through fasteners. The power supply module includes: a second support frame, a switching power supply, a second drive board and a resistor board, and the switching power supply, the second drive board and the resistor board are all installed inside the second support frame through mounting bolts.

[0017] The power module is fixedly installed on the top of the power supply module through fasteners. The power module includes: a third support frame, an inverter PCB board and a rectifier PCB board, and the inverter PCB board and the rectifier PCB board are both fixedly installed inside the third support frame through mounting bolts.

[0018] The top plate is fixedly installed on the top of the power module through fasteners and is used to cap the movement.

[0019] Multiple mounting bolts are arranged inside the first support frame, the second support frame and the third support frame to facilitate the installation of the device. The assembly frame, the first support frame, the second support frame, the third support frame and the top plate are assembled with each other through fasteners to achieve a modular effect and facilitate maintenance.

[0020] Optionally, the power conversion module includes: an IGBT module, a gate plate, a Hall connection piece, a Hall current sensor, a cement resistor, a first connection copper plate, and an absorption capacitor. There are multiple IGBT modules, with three in each group, and a total of six groups. The IGBT modules in each group are connected through the gate plate. One end of the top of the IGBT module at the outermost end of each group is fixedly installed with a Hall connection piece. The middle of the Hall connection piece is provided with a Hall current sensor. The middle of the top of the IGBT module with the Hall connection piece is fixedly installed with a cement resistor. Every three groups of IGBT modules are fixed into one body by two of the first connection copper plates. Multiple absorption capacitors are fixedly installed on the top of the first connection copper plate. Every two absorption capacitors form a group, and six groups of absorption capacitors are fixedly installed on the top of each first connection copper plate.

[0021] Optionally, the assembly frame includes: a U-shaped baffle, a first sealing plate, side plates, and a back plate. The U-shaped baffle is fixedly installed on the top of the mounting plate. The back plate is fixedly installed on the back of the U-shaped baffle through fasteners. One end of the front of the top of the U-shaped baffle is fixedly installed with the first sealing plate. The left and right ends of the top of the U-shaped baffle are fixedly installed with side plates.

[0022] Optionally, six slots are opened on the top of the first sealing plate to facilitate the corresponding Hall connection pieces to extend out of the device for connection.

[0023] Optionally, the capacitor module includes: a capacitor mounting frame, a cylindrical aluminum electrolytic capacitor, and a second sealing plate. The capacitor mounting frame is fixedly installed on the top of the assembly frame. The cylindrical aluminum electrolytic capacitor is arranged inside the capacitor mounting frame. The second sealing plate is fixedly installed on the top of the capacitor mounting frame.

[0024] Optionally, an installation head is arranged on the back of the cylindrical aluminum electrolytic capacitor, and a second connection copper plate is fixedly installed through the installation head.

[0025] Optionally, the drive module includes: a first support frame and a first drive plate. The first drive plate is fixedly installed inside the first support frame through a mounting bolt. Six first drive plates are fixedly installed inside the first support frame, which are used to convert the control instructions of the main control system into signals for driving the IGBT module, so as to achieve precise speed regulation and reliable control of the motor.

[0026] Optionally, the power supply module includes: a second support frame, a switching power supply, a second drive plate, and a resistor plate. The second support frame is fixedly installed on the top of the drive module. Two switching power supplies are fixedly installed in the middle of the inside of the second support frame through mounting bolts. The second drive plates are fixedly installed at the left and right ends of the inside of the second support frame through mounting bolts. Three resistor plates are fixedly installed in the inside of the second support frame through mounting bolts.

[0027] Optionally, the switching power supply includes: a power supply installation frame, an installation panel, and a partition board. The installation panel is fixedly installed inside the power supply installation frame, and the partition board is fixedly installed on the top of the power supply installation frame through fixing bolts to protect the components on the top of the installation panel.

[0028] (III) Beneficial effects

[0029] The present invention provides a modular core of a mine explosion-proof frequency converter, which has the following beneficial effects:

[0030] 1. For the modular core of the mine explosion-proof frequency converter, the assembly frame, capacitor module, drive module, power supply module, power module, and top plate are all connected and fixed through fasteners. Therefore, the degree of integration of this device is high. These modules are integrated into a whole according to requirements. The overall disassembly and assembly are convenient, saving maintenance time. With its modular design, when a fault occurs, only a single module needs to be replaced, which can reduce the downtime. Moreover, each module is connected through different support frames, and its isolation design can limit the spread of explosion risk, meeting the explosion-proof standards. And because the modules are connected through support frames, modules can be reduced or increased according to requirements to facilitate subsequent upgrades (such as adding a communication module according to requirements).

[0031] 2. For the modular core of the mine explosion-proof frequency converter, by setting fasteners, the components installed inside the module, such as the switching power supply, the first drive board, the second drive board, the resistor board, the inverter PCB board, and the rectifier PCB board, are all fixed on the support frame through fasteners. Therefore, it is more convenient to adjust their positions or replace them when damaged. The overall device is modular in design, and the internal components are also modular in design, which can save the customer's assembly and debugging time during actual use. And it is convenient for transportation during transportation. The device can be transported to the destination and then assembled, facilitating stock preparation and improving the efficiency of stock preparation and delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the present invention;

[0033] Figure 2 It is a schematic explosion structure diagram of the power module and the power supply module of the present invention;

[0034] Figure 3 It is a schematic explosion structure diagram of the drive module of the present invention;

[0035] Figure 4 It is a schematic explosion structure diagram of the assembly frame and the capacitor module of the present invention;

[0036] Figure 5 It is a schematic explosion structure diagram of the power conversion module of the present invention;

[0037] Figure 6 Structural schematic diagram of the power conversion module of the present invention;

[0038] Figure 7 Structural schematic diagram of the explosion of the switching power supply of the present invention;

[0039] Figure 8 For the present invention Figure 1 Structural schematic diagram after removing the drive module, power supply module, power module and top plate in the present invention;

[0040] Figure 9 For the present invention Figure 8 Rear view structural schematic diagram;

[0041] Figure 10 For the present invention Figure 9 Explosion structural schematic diagram of the second connection copper plate and the back plate in the present invention;

[0042] Figure 11 Front view structural schematic diagram of the present invention;

[0043] Figure 12 Right view structural schematic diagram of the present invention;

[0044] Figure 13 Explosion schematic diagram after reducing module adjustment in Embodiment 9 of the present invention.

[0045] In the figure: 1. Heat dissipation module; 2. Mounting plate; 3. Power conversion module; 31. IGBT module; 32. Gate plate; 33. Hall connection piece; 34. Hall current sensor; 35. Cement resistor; 36. First connection copper plate; 37. Absorption capacitor; 4. Assembly frame; 41. U-shaped baffle; 42. First sealing plate; 421. Groove; 43. Side plate; 44. Back plate; 5. Capacitor module; 51. Capacitor mounting frame; 52. Cylindrical aluminum electrolytic capacitor; 521. Mounting head; 522. Second connection copper plate; 53. Second sealing plate; 6. Drive module; 61. First support frame; 62. First drive plate; 7. Power supply module; 71. Second support frame; 72. Switching power supply; 721. Power supply mounting frame; 722. Mounting panel; 723. Partition plate; 73. Second drive plate; 74. Resistance plate; 8. Power module; 81. Third support frame; 82. Inverter PCB board; 83. Rectifier PCB board; 9. Top plate; 10. Mounting bolt. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] In order to make the technical means, creative features, achieved objectives and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with Figures 1 to 13 and

[0048] The present invention provides a technical solution: a modular core of a mine explosion-proof frequency converter, including a heat dissipation module 1, a mounting plate 2, a power conversion module 3, a splicing frame 4, a capacitor module 5, a drive module 6, a power supply module 7, a power module 8, a top plate 9 and mounting bolts 10, including:

[0049] Embodiment 1:

[0050] Please refer to Figure 1 and Figure 11 and Figure 12 To ensure the stability of the core during use, a device heat dissipation module 1 and a mounting plate 2 are provided;

[0051] The heat dissipation module 1, which is a copper tube multi-tower radiator, is used for dissipating heat from the core. The mounting plate 2 is arranged on the top of the heat dissipation module 1 and is used to conveniently fix the core inside the explosion-proof frequency converter. Therefore, the heat dissipation module 1 is a copper tube multi-tower radiator, which is provided with six U-shaped heat pipes to expand its heat dissipation area, prevent the core from overheating, and ensure the normal use of the core. Moreover, the copper tube multi-tower radiator is a prior art and common knowledge, so it will not be described in detail in the text. The setting of the mounting plate 2 is to ensure that the device can be installed inside the explosion-proof frequency converter during use, facilitating installation.

[0052] Embodiment 2:

[0053] Please refer to Figure 5 and Figure 6 To convert electrical energy, a device power conversion module 3 is provided;

[0054] There are multiple power conversion modules 3, which are fixedly installed in the middle of the top of the mounting plate 2 through fasteners. It includes an IGBT module 31, which can achieve efficient conversion of electrical energy and adjust and control the power. The power conversion module 3 includes: an IGBT module 31, a gate plate 32, a Hall connection piece 33, a Hall current sensor 34, a cement resistor 35, a first connection copper plate 36, and an absorption capacitor 37. There are multiple IGBT modules 31, with three in each group, and a total of six groups. The IGBT modules 31 in each group are connected through the gate plate 32. One end of the top of one IGBT module 31 at the outermost end of each group is fixedly installed with a Hall connection piece 33. A Hall current sensor 34 is arranged in the middle of the Hall connection piece 33. A cement resistor 35 is fixedly installed in the middle of the top of the IGBT module 31 provided with the Hall connection piece 33. Every three groups of IGBT modules 31 are fixed into one body through two first connection copper plates 36. Multiple absorption capacitors 37 are fixedly installed on the top of the first connection copper plate 36. Every two absorption capacitors 37 are in one group, and six groups of absorption capacitors 37 are fixedly installed on the top of each first connection copper plate 36. Therefore, due to the setting of the IGBT module 31, the IGBT module 31 is the core device for realizing the electrical energy control and motor drive of the movement. The IGBT modules 31 are connected through the gate plate 32 to increase the stability between each IGBT module 31. The setting of the Hall connection piece 33, with a Hall current sensor 34 arranged in the middle, forms an integral body. The Hall connection piece 33 is used to facilitate the connection with other devices. The Hall current sensor 34 is the bridge connecting "electrical energy transmission" and "intelligent control". Its core value lies in: through high-precision and high-reliability current monitoring, realizing precise control, real-time protection, and energy efficiency optimization of the motor, while meeting the harsh explosion-proof, anti-interference, and environmental adaptability requirements in coal mine shafts. The setting of the cement resistor 35 plays a stabilizing role to ensure the safety and reliability of the frequency converter throughout the startup, operation, and shutdown cycles. The setting of the first connection copper plate 36 is used to connect multiple IGBT modules 31 to increase the stability between the devices. The setting of the absorption capacitor 37 can solve the problem of voltage transient impact caused by sudden changes in the load of underground equipment, protect core devices such as the IGBT module 31, and improve the reliability of the frequency converter in a strong electromagnetic interference and high-vibration environment.

[0055] Embodiment 3:

[0056] Please refer to Figure 1 and Figure 4 , in order to facilitate the protection of the structure of the power conversion module 3, a device assembly frame 4 is provided;

[0057] The assembled frame 4 is fixedly installed on the top of the mounting plate 2 through fasteners and is placed around a plurality of power conversion modules 3 for protecting the power conversion modules 3. The assembled frame 4 includes a U-shaped baffle 41, a first sealing plate 42, side plates 43 and a back plate 44. The U-shaped baffle 41 is fixedly installed on the top of the mounting plate 2, and the back plate 44 is fixedly installed on the back of the U-shaped baffle 41 through fasteners. One end of the front of the top of the U-shaped baffle 41 is fixedly installed with the first sealing plate 42, and the left and right ends of the top of the U-shaped baffle 41 are fixedly installed with side plates 43. Six slots 421 are opened on the top of the first sealing plate 42 for facilitating the corresponding Hall connection pieces 33 to extend out of the device for connection. Therefore, the setting of the U-shaped baffle 41, through connection with the back plate 44, can protect the power conversion modules 3 and prevent damage to the power conversion modules 3 caused by collisions or the like during use. The setting of the first sealing plate 42 is used to seal one end of the top of the U-shaped baffle 41 that is not connected to the capacitor module 5 to prevent damage caused by the exposure of the power conversion modules 3. Six slots 421 are opened on the top of the first sealing plate 42 to facilitate the penetration of six Hall connection pieces 33 respectively. The side plates 43 are fixed at one end of the top of the left and right sides of the U-shaped baffle 41 and can be connected to the capacitor mounting frame 51 of the capacitor module 5 through fasteners to seal the openings on the left and right sides thereof, increasing the connectivity between the devices.

[0058] Embodiment 4:

[0059] Please refer to Figure 4 、 Figure 8 、 Figure 9 and Figure 10 In order to make the voltage more stable, a device capacitor module 5 is provided;

[0060] The capacitor module 5 is fixedly installed on the top of the assembly frame 4 through fasteners and is used to filter the rectified ripple voltage to make the output voltage more stable. The capacitor module 5 includes: a capacitor mounting frame 51, a cylindrical aluminum electrolytic capacitor 52, and a second sealing plate 53. The capacitor mounting frame 51 is fixedly installed on the top of the assembly frame 4. The cylindrical aluminum electrolytic capacitor 52 is arranged inside the capacitor mounting frame 51. The second sealing plate 53 is fixedly installed on the top of the capacitor mounting frame 51. An installation head 521 is arranged on the back of the cylindrical aluminum electrolytic capacitor 52, and a second connection copper plate 522 is fixedly installed through the installation head 521. Therefore, the setting of the capacitor mounting frame 51 is to facilitate the installation of the cylindrical aluminum electrolytic capacitor 52 during use. Four cylindrical aluminum electrolytic capacitors 52 are horizontally installed inside it. The second sealing plate 53 is installed on the top of the capacitor mounting frame 51 through fixing bolts and is used to seal the top of the capacitor mounting frame 51 through the second sealing plate 53. The four cylindrical aluminum electrolytic capacitors 52 inside are protected by the capacitor mounting frame 51 to prevent damage caused by collision during use. The left and right openings are sealed by the two back plates 44 of the assembly frame 4 to further increase the protection. The setting of the cylindrical aluminum electrolytic capacitor 52 is to filter the rectified ripple voltage to make the output voltage more stable. During the operation of the frequency converter, when the power input is temporarily insufficient or the load requires a large amount of power instantaneously, the aluminum electrolytic capacitor can release the stored electrical energy to provide additional energy support for the load, playing a role of buffering and compensation. The setting of the installation head 521 facilitates the connection with the second connection copper plate 522. The cylindrical aluminum electrolytic capacitor 52 is connected to the rest of the device through the second connection copper plate 522 to increase the integrity between the devices.

[0061] Embodiment Five:

[0062] Please refer to Figure 1 and Figure 3 , in order to achieve precise speed regulation and reliable control of the motor by the movement mechanism, a device drive module 6 is provided;

[0063] The driving module 6 is fixedly installed on the top of the capacitor module 5 through fasteners. The driving module 6 includes a first support frame 61 and a first driving board 62. The first driving board 62 is fixedly installed inside the first support frame 61 through mounting bolts 10. The driving module 6 includes a first support frame 61 and a first driving board 62. The first driving board 62 is fixedly installed inside the first support frame 61 through mounting bolts 10. Six first driving boards 62 are fixedly installed inside the first support frame 61, which are used to convert the control instructions of the main control system into signals for driving the IGBT module 31, so as to realize the precise speed regulation and reliable control of the motor. Therefore, the driving module 6 includes a first support frame 61 and a first driving board 62. The first support frame 61 is used to facilitate the installation of multiple first driving boards 62, and the first support frame 61 and the other support frames are fixed through fasteners to achieve the modular effect of the whole movement. The setting of the first driving board 62 is to ensure the safe and efficient operation of the power device through signal amplification, isolation protection, precise driving and fault monitoring, and finally realize the reliable variable-frequency speed regulation of the motor, while meeting the safety and stability requirements in the explosion-proof environment.

[0064] Embodiment Six:

[0065] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 7 , in order to solve the problems of high vibration, strong interference and large impact underground through integrated design and improve the reliability and maintenance efficiency of the equipment, a device power module 7 is provided;

[0066] The power supply module 7 is fixedly installed on the top of the drive module 6 through fasteners. The power supply module 7 includes: a second support frame 71, a switching power supply 72, a second drive board 73, and a resistor board 74. The switching power supply 72, the second drive board 73, and the resistor board 74 are all installed inside the second support frame 71 through mounting bolts 10. The power supply module 7 includes: a second support frame 71, a switching power supply 72, a second drive board 73, and a resistor board 74. The second support frame 71 is fixedly installed on the top of the drive module 6. Two switching power supplies 72 are fixedly installed in the middle of the inside of the second support frame 71 through mounting bolts 10. Second drive boards 73 are fixedly installed at both the left and right ends of the inside of the second support frame 71 through mounting bolts 10. Three resistor boards 74 are fixedly installed inside the second support frame 71 through mounting bolts 10. The switching power supply 72 includes: a power supply installation frame 721, a mounting panel 722, and a partition board 723. A mounting panel 722 is fixedly installed inside the power supply installation frame 721. A partition board 723 is fixedly installed on the top of the power supply installation frame 721 through a fixing bolt to protect the components on the top of the mounting panel 722. Therefore, the power supply module 7 includes a second support frame 71, a switching power supply 72, a second drive board 73, and a resistor board 74. The setting of the second support frame 71 has the same function as that of the first support frame 61. The second support frame 71 is connected to the first support frame 61 and the other support frames through fasteners to further achieve the modular effect of the overall movement. The setting of the switching power supply 72 is an important device to ensure the safety of the explosion-proof frequency converter movement. An encapsulated isolation transformer is adopted inside it, which can completely electrically isolate the high voltage on the input side from the low voltage on the output side. Even if internal components fail, no exposed electric sparks will be generated, meeting the safety requirements of the explosive gas environment in coal mines. The output end is equipped with short-circuit current limiting protection. When a short circuit occurs in the drive board or control circuit, the current is automatically limited within 1.2 times the rated value to avoid the expansion of the fault and cause safety accidents. The switching power supply 72 includes a power supply installation frame 721, a mounting panel 722, and a partition board 723. The above components such as the isolation transformer and short-circuit current limiting protection are all installed on the top of the mounting panel 722. The setting of the power supply installation frame 721 is to facilitate the fixation of the power supply module 7 in the middle of the second support frame 71. The setting of the partition board 723 is to protect the components set on the top of the mounting panel 722.

[0067] Embodiment Seven:

[0068] Please refer to Figure 1 and Figure 2 , in order to work together to achieve the bidirectional conversion of alternating current and direct current, a device power module 8 and a top plate 9 are provided;

[0069] The power module 8 is fixedly installed on the top of the power supply module 7 through fasteners. The power module 8 includes: a third support frame 81, an inverter PCB board 82 and a rectifier PCB board 83. The inverter PCB board 82 and the rectifier PCB board 83 are both fixedly installed inside the third support frame 81 through mounting bolts 10. Therefore, the power module 8 includes the third support frame 81, the inverter PCB board 82 and the rectifier PCB board 83. The rectifier PCB board 83 and the inverter PCB board 82 are the core components for the mine explosion-proof frequency converter to achieve "electrical energy form conversion". The rectifier PCB board 83 completes the rectification of "grid alternating current → DC bus", and the inverter PCB board 82 realizes the inversion of "DC bus → variable-frequency alternating current required by the motor". The combination of the two not only provides an adjustable-speed power source for the motor, but also meets the operation requirements of high reliability, high safety and high efficiency in the mine environment through explosion-proof design and protection functions.

[0070] Embodiment Eight:

[0071] Please refer to Figure 2 and Figure 3 , in order to ensure that the internal components also achieve the modular effect, a device mounting bolt 10 is provided;

[0072] A plurality of mounting bolts 10 are provided inside the first support frame 61, the second support frame 71 and the third support frame 81 for facilitating the installation of the device. The assembly frame 4, the first support frame 61, the second support frame 71, the third support frame 81 and the top plate 9 are assembled with each other through fasteners to achieve the modular effect and facilitate maintenance. Therefore, the mounting bolt 10 is provided, and a mounting bolt 10 is provided inside the first support frame 61, the second support frame 71 and the third support frame 81 to facilitate the installation of components such as the inverter PCB board 82, the rectifier PCB board 83, the switching power supply 72, the second drive board 73, the resistor board 74 and the first drive board 62. The installation position can also be replaced according to the actual use of the user to meet the customer's requirements for the movement, and further increase the modular effect of the device.

[0073] Embodiment Nine:

[0074] Please refer to Figure 1 , Figure 2 Figure 3 and Figure 13 , this embodiment is a supplementary description of Embodiment Eight. On the basis of the technical solution described in Embodiment Eight, it further outlines how to replace the component positions through the mounting bolt 10 to meet the customer's needs;

[0075] When the movement is actually used, in order for the customer to meet the explosion-proof frequency converter shells of different models, the drive module 6, the power supply module 7 and the power module 8 can be replaced according to the requirements, and the first support frame 61 and the second support frame 71 can be reduced or increased, such asFigure 13 In this case, when the installation frame is reduced, correspondingly, the overall movement mechanism is smaller and does not require too many driver boards. Therefore, the driver board is reduced, and both the switching power supply 72 and the resistor board 74 are reduced to one. Since their components are all fixed by the mounting bolts 10, it is convenient for customers to adjust, further increasing the adjustability during installation for customers to meet their needs.

[0076] All the electrical components appearing in this article are electrically connected to the external main controller and the 220V mains power supply, and the main controller can be a conventional known device such as a computer for control.

[0077] In the present invention, the working steps of the device are as follows:

[0078] First, fix the heat dissipation module 1 at the bottom of the mounting plate 2. The aluminum seat of its radiator penetrates the mounting plate 2 and is placed in the middle of the upper surface of the mounting plate 2 to achieve the purpose of heat dissipation. Install multiple power conversion modules 3 on the upper surface of the mounting plate 2 according to requirements, and place them as much as possible in the middle. Install the assembly frame 4 around it to protect the power conversion module 3 and increase its safety during use. Install the capacitor module 5 at the installation position at one end of the top of the assembly frame 4 to filter out the ripple voltage after rectification and make the output voltage more stable. On the top of the capacitor module 5, users can install the drive module 6, power supply module 7, and power module 8 on the support frame according to requirements through fasteners. The installation position of its internal components can be adjusted by the mounting bolts 10 according to the number of installed modules, increasing the modular effect of the device. Finally, install the top plate 9 on the top of the lowest module support frame through fasteners to enclose it and increase the safety of the device during use.

[0079] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular core of a mine explosion-proof frequency converter, characterized in that, Including: A heat dissipation module, which is a copper tube multi-tower radiator for dissipating heat from the movement; A mounting plate, arranged on the top of the heat dissipation module, for conveniently fixing the movement inside the explosion-proof frequency converter; A plurality of power conversion modules, fixedly installed in the middle of the top of the mounting plate through fasteners, which include IGBT modules, can achieve efficient conversion of electric energy, and adjust and control the power; An assembly frame, fixedly installed on the top of the mounting plate through fasteners and placed around the plurality of power conversion modules, for protecting the power conversion modules; A capacitor module, fixedly installed on the top of the assembly frame through fasteners, for filtering the ripple voltage after rectification to make the output voltage more stable; A drive module, fixedly installed on the top of the capacitor module through fasteners, the drive module includes: a first support frame and a first drive board, and the first drive board is fixedly installed inside the first support frame through mounting bolts; A power supply module, fixedly installed on the top of the drive module through fasteners, the power supply module includes: a second support frame, a switching power supply, a second drive board and a resistor board, and the switching power supply, the second drive board and the resistor board are all installed inside the second support frame through mounting bolts; A power module, fixedly installed on the top of the power supply module through fasteners, the power module includes: a third support frame, an inverter PCB board and a rectifier PCB board, and the inverter PCB board and the rectifier PCB board are both fixedly installed inside the third support frame through mounting bolts; A top board, fixedly installed on the top of the power module through fasteners, for covering the movement; A plurality of mounting bolts are arranged inside the first support frame, the second support frame and the third support frame for facilitating the installation of the device, and the assembly frame, the first support frame, the second support frame, the third support frame and the top board are assembled with each other through fasteners to achieve a modular effect and facilitate maintenance.

2. The modular movement of a mine explosion-proof frequency converter according to claim 1, characterized in that: The power conversion module includes: IGBT modules, gate electrode plates, Hall connection pieces, Hall current sensors, cement resistors, first connection copper plates and absorption capacitors. A plurality of IGBT modules are provided, with three in each group, and there are a total of six groups. The IGBT modules in each group are connected through gate electrode plates. One end of the top of each of the IGBT modules at the outermost end of each group is fixedly installed with a Hall connection piece, and a Hall current sensor is arranged in the middle of the Hall connection piece. A cement resistor is fixedly installed in the middle of the top of the IGBT module provided with the Hall connection piece. The IGBT modules are fixed into one body every three groups through two of the first connection copper plates. A plurality of absorption capacitors are fixedly installed on the top of the first connection copper plates, with two absorption capacitors in each group, and six groups of absorption capacitors are fixedly installed on the top of each of the first connection copper plates.

3. The modular movement of a mine explosion-proof frequency converter according to claim 1, characterized in that: The assembly frame includes: a U-shaped baffle, a first sealing plate, side plates and a back plate. The U-shaped baffle is fixedly installed on the top of the mounting plate. The back of the U-shaped baffle is fixedly installed with a back plate through fasteners. One end of the front of the top of the U-shaped baffle is fixedly installed with a first sealing plate, and the left and right ends of the top of the U-shaped baffle are fixedly installed with side plates.

4. The modular movement of a mine explosion-proof frequency converter according to claim 3, characterized in that: Six slots are opened at the top of the first sealing plate to facilitate the connection of the corresponding Hall connection pieces to the device.

5. The modular core of a mine explosion-proof frequency converter according to claim 1, characterized in that: The capacitor module includes: a capacitor mounting frame, a cylindrical aluminum electrolytic capacitor, and a second sealing plate. The capacitor mounting frame is fixedly installed on the top of the assembly frame. A cylindrical aluminum electrolytic capacitor is arranged inside the capacitor mounting frame, and a second sealing plate is fixedly installed on the top of the capacitor mounting frame.

6. The modular movement of a mine explosion-proof frequency converter according to claim 5, characterized in that: An installation head is arranged on the back of the cylindrical aluminum electrolytic capacitor, and a second connection copper plate is fixedly installed through the installation head.

7. The modular movement of a mine explosion-proof frequency converter according to claim 1, characterized in that: The drive module includes: a first support frame and a first drive plate. The first drive plate is fixedly installed inside the first support frame through a mounting bolt. Six first drive plates are fixedly installed inside the first support frame, which are used to convert the control instructions of the main control system into signals for driving the IGBT module, so as to achieve precise speed regulation and reliable control of the motor.

8. The modular movement of a mine explosion-proof frequency converter according to claim 1, characterized in that: The power supply module includes: a second support frame, a switching power supply, a second drive plate, and a resistor plate. The second support frame is fixedly installed on the top of the drive module. Two switching power supplies are fixedly installed in the middle of the second support frame through mounting bolts. Second drive plates are fixedly installed at both the left and right ends inside the second support frame through mounting bolts. Three resistor plates are fixedly installed inside the second support frame through mounting bolts.

9. The modular movement of a mine explosion-proof frequency converter according to claim 8, characterized in that: The switching power supply includes: a power supply mounting frame, a mounting panel, and a partition plate. A mounting panel is fixedly installed inside the power supply mounting frame. A partition plate is fixedly installed on the top of the power supply mounting frame through a fixing bolt, which is used to protect the components on the top of the mounting panel.

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