Modular mine explosion-proof combined frequency converter

Abstract

The utility model relates to the field of mining explosion -proof combination frequency converter discloses a modular mining explosion -proof combination frequency converter, include: cable introduction device, the cable introduction device includes the casing one, be provided with in the casing one and charge unit storehouse of disconnecting switch, binding post, input electric reactance ware, function module, the function module includes frequency conversion machine core control module, power frequency control unit module, lighting unit module, soft start module and switch module, control module, control module includes microprocessor control unit, control binding post, binding cavity. In the utility model, through the cable introduction device, function module and control module mutual cooperation, realize control many equipment, equipment maintenance cost is low, and equipment floor space is small.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof combined frequency converters for mining, and in particular to a modular explosion-proof combined frequency converter for mining. Background Technology

[0002] With the maturity of frequency converter technology and its increasingly wide application, its precise speed control and excellent energy-saving effect have led to its growing use in special applications such as underground coal mines. Many applications require two or more frequency converters to operate synchronously, such as belt conveyors and scraper conveyors. Simultaneously, explosion-proof motors also require heat dissipation and braking during operation, necessitating the simultaneous operation of multiple devices, increasing equipment maintenance and labor costs. Installing the equipment also requires significant space, manpower, and resources. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies, such as large equipment size and high maintenance costs, by proposing a modular explosion-proof combined frequency converter for mining.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a modular explosion-proof combined frequency converter for mining, comprising:

[0005] A cable entry device, comprising a housing, wherein a disconnecting switch, a terminal block, an input reactor, and a charging unit compartment are disposed within the housing;

[0006] The functional modules include a frequency converter control module, a power frequency control unit module, a lighting unit module, a soft start module, and a switch module;

[0007] The control module includes a microprocessor control unit, control terminals, and a wiring cavity.

[0008] As a further description of the above technical solution:

[0009] The disconnecting switch is connected to the input reactor via the terminals. The charging unit compartment is equipped with an input contactor, a charging contactor, and a charging resistor. The charging contactor and the charging resistor are connected in series. The input contactor is connected in parallel on the branch where the charging contactor and the charging resistor are connected in series. The input reactor is connected in series with the input contactor.

[0010] As a further description of the above technical solution:

[0011] The microprocessor control unit and control terminals are respectively located on the wiring cavity, which is connected to the frequency converter core control module.

[0012] As a further description of the above technical solution:

[0013] The variable frequency drive control module includes a housing two. A mounting window is embedded on the front side of the housing two. An input module and a PLC programmable controller are installed on the mounting window. The input module and the PLC programmable controller are connected. A function button module is installed on the side wall of the housing two. The function button module is connected to the PLC programmable controller. The variable frequency drive, a first output reactor, and an output contactor are installed inside the housing two. The first output reactor, the output contactor, and the variable frequency drive are connected in series. The first output reactor is connected to a terminal block.

[0014] As a further description of the above technical solution:

[0015] The power frequency control unit module includes a housing three and a second output reactor disposed within the housing three. The housing three is provided with a power frequency status display window, and the power frequency status display window is provided with a power frequency start button. The power frequency start button is connected to the inverter core. The second output reactor and the power frequency contactor are connected in series. The power frequency contactor is connected to the output contactor.

[0016] As a further description of the above technical solution:

[0017] The lighting unit module includes a housing four, on which a lighting status display window is provided, and a lighting control button is provided on the lighting status display window. A lighting control unit is provided on the housing four, and the lighting control unit is connected to the lighting control button and to a terminal block.

[0018] As a further description of the above technical solution:

[0019] The soft start module includes a housing five, on which a soft start display window and a soft start control button are provided. A soft start unit is provided inside the housing five, and the soft start unit is connected to the soft start control button and to a terminal block.

[0020] As a further description of the above technical solution:

[0021] The switch module includes a housing six, on the side wall of which a switch display window, a switch operation panel, and a switch control button are provided. A switch control unit is provided inside the housing six, and the switch control unit is connected to the switch operation panel and the switch control button respectively. The switch control unit is also connected to a terminal block.

[0022] This utility model has the following beneficial effects:

[0023] In this invention, the cable introduction device, functional modules, and control modules work together to solve the problems of large footprint and high maintenance costs of frequency converter equipment required for synchronous drive and control of explosion-proof variable frequency motors.

[0024] In this invention, the cable introduction device, functional modules, and control modules work together to flexibly adapt to the coordination between the equipment, which can solve the problem of large footprint, save on labor costs, reduce maintenance costs, and minimize equipment space occupation.

[0025] In this invention, the cable introduction device, functional modules, and control modules work together to simultaneously control AC asynchronous induction motors and AC permanent magnet synchronous motors, as well as the motor cooling and braking system.

[0026] In this utility model, the cable entry device unit module provides 1140V / 660V power to the main circuit and is used as emergency power outage protection for system faults. The input reactor and isolating switch are used to prevent the impact of the surge current of capacitor charging when the frequency converter is turned on on the power grid, and at the same time, it can suppress the generation of high-order harmonics by the frequency converter during the rectification process. Attached Figure Description

[0027] Figure 1 This is a perspective view of a modular explosion-proof combined frequency converter for mining proposed in this utility model;

[0028] Figure 2 A perspective view of the inverter core control module of a modular explosion-proof combined frequency converter for mining proposed in this utility model;

[0029] Figure 3 This is a perspective view of the power frequency control unit module of a modular explosion-proof combined frequency converter for mining proposed in this utility model;

[0030] Figure 4 This is a perspective view of the lighting unit module of a modular explosion-proof combined frequency converter for mining proposed in this utility model;

[0031] Figure 5 This is a perspective view of a soft-start module for a modular explosion-proof combined frequency converter for mining, as proposed in this utility model.

[0032] Figure 6 This is a perspective view of the switching module of a modular explosion-proof combined frequency converter for mining proposed in this utility model;

[0033] Figure 7 This is a perspective view of a cable entry device for a modular explosion-proof combined frequency converter for mining, as proposed in this utility model.

[0034] Figure 8This is a perspective view of the control module of a modular explosion-proof combined frequency converter for mining proposed in this utility model.

[0035] Legend:

[0036] 1. Cable entry device; 101. Disconnecting switch; 102. Terminal block; 103. Input reactor; 104. Charging unit compartment; 105. Housing 1; 2. Functional modules; 201. Variable frequency drive control module; 2011. PLC programmable controller; 2012. Variable frequency drive mechanism; 2013. Mounting window; 2014. Input module; 2015. First output reactor; 2016. Function button module; 2017. Output contactor; 2018. Housing 2; 202. Power frequency control unit module; 2021. Power frequency status display window; 2022. Second output reactor; 2023. Power frequency start / stop button; 2024. Power frequency contactor ; 2025, Housing Three; 203, Lighting Unit Module; 2031, Lighting Status Display Window; 2032, Lighting Control Unit; 2033, Lighting Control Button; 2034, Housing Four; 204, Soft Start Module; 2041, Soft Start Display Window; 2042, Soft Start Control Button; 2043, Soft Start Control Unit; 2044, Housing Five; 205, Switch Module; 2051, Switch Display Window; 2052, Switch Operation Panel; 2053, Switch Control Unit; 2054, Switch Control Button; 2055, Housing Six; 3, Control Module; 301, Microprocessor Control Unit; 302, Control Terminal; 303, Wiring Chamber. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Reference Figure 1-8 One embodiment of this utility model is a modular explosion-proof combined frequency converter for mining, comprising:

[0039] The cable entry device 1 includes a housing 105, and a disconnect switch 101, a terminal block 102, an input reactor 103 and a charging unit compartment 104 are provided inside the housing 105.

[0040] Functional module 2 includes a frequency converter core control module 201, a power frequency control unit module 202, a lighting unit module 203, a soft start module 204, and a switch module 205;

[0041] Control module 3 includes a microprocessor control unit 301, a control terminal 302, and a wiring cavity 303;

[0042] The arbitrary cable entry device 1, together with the functional module 2 and the control module 3, will form a product. Through the combination of functional module 2, functions such as combined frequency converter and combined frequency converter starter can be realized.

[0043] The disconnect switch 101 is connected to the input reactor 103 via the terminal block 102. The charging unit compartment 104 is equipped with an input contactor, a charging contactor, and a charging resistor. The charging contactor and the charging resistor are connected in series, and the input contactor is connected in parallel on the branch where the charging contactor and the charging resistor are connected in series. The input reactor 103 is connected in series with the input contactor. This allows the power supply to be switched on and off after the power is introduced, controls the contactor coil to engage, and controls the power supply to enter the next stage, ensuring safety.

[0044] The microprocessor control unit 301 and the control terminal 302 are respectively installed on the wiring cavity 303. The wiring cavity 303 is connected to the frequency converter core control module 201. Through the microprocessor, it receives signals from the functional module 2 and connects to the host computer, sensors and other devices to realize the function of uploading and downloading.

[0045] The inverter core control module 201 includes a housing 2018. A mounting window 2013 is embedded in the front of the housing 2018. An input module 2014 and a PLC programmable controller 2011 are mounted on the mounting window 2013. The input module 2014 and the PLC programmable controller 2011 are connected. A function button module 2016 is mounted on the side wall of the housing 2018. The function button module 2016 is connected to the PLC programmable controller 2011. Inside the housing 2018 are an inverter core 2012, a first output reactor 2015, and an output contactor 2017. The first output reactor 2015, the output contactor 2017, and the inverter core 2012 are connected in series. The first output reactor 2015 is connected to a terminal block 102. This module can control the core to operate according to the working conditions and, in conjunction with the control module 3, achieve remote control and other functions.

[0046] The power frequency control unit module 202 includes a housing 3 2025 and a second output reactor 2022 installed inside the housing 3 2025. A power frequency status display window 2021 is provided on the housing 3 2025. A power frequency start button 2023 is provided on the power frequency status display window 2021. The power frequency start button 2023 is connected to the inverter core 2012. The second output reactor 2022 and the power frequency contactor 2024 are connected in series. The power frequency contactor 2024 is connected to the output contactor 2017. With the help of the control module 3, it can realize the power frequency operation of small loads such as water pumps and fans.

[0047] The lighting unit module 203 includes a housing 2034, a lighting status display window 2031 on the housing 2034, a lighting control button 2033 on the lighting status display window 2031, a lighting control unit 2032 on the housing 2034, the lighting control unit 2032 and the lighting control button 2033 are connected, and the lighting control unit 2032 is connected to the terminal block 102, which can provide power for one or more lighting circuits.

[0048] The soft start module 204 includes a housing 2044, on which a soft start display window 2041 and a soft start control button 2042 are provided. A soft start unit 2043 is provided inside the housing 2044. The soft start unit 2043 is connected to the soft start control button 2042 and is connected to the terminal block 102. It can provide heavy-load start function for high-power loads such as underground coal mining machines, crushers, and belt conveyors.

[0049] The switch module 205 includes a housing 2055. The side wall of the housing 2055 is provided with a switch display window 2051, a switch operation panel 2052, and a switch control button 2054. The housing 2055 is provided with a switch control unit 2053. The switch control unit 2053 is connected to the switch operation panel 2052 and the switch control button 2054 respectively. The switch control unit 2053 is connected to the terminal block 102. It can provide automatic control functions for small power motors such as pump stations in fully mechanized mining faces, pump stations in underground substations, water pumps at the head of belt conveyors, water-cooled circulating pumps of frequency converters, fans of frequency converters, water-cooled circulating pumps of permanent magnet motors, tunneling machines, anchor bolting machines, and water pumps in tunneling faces.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. A modular explosion-proof combined frequency converter for mining, characterized in that: include: The cable entry device (1) includes a housing (105), and the housing (105) is provided with a disconnect switch (101), a terminal block (102), an input reactor (103), and a charging unit compartment (104). Functional module (2), which includes a frequency converter core control module (201), a power frequency control unit module (202), a lighting unit module (203), a soft start module (204), and a switch module (205); The control module (3) includes a microprocessor control unit (301), a control terminal (302), and a wiring cavity (303).

2. A modular explosion-proof combined frequency converter for mining according to claim 1, characterized in that: The disconnect switch (101) is connected to the input reactor (103) via the terminal block (102) and the charging unit compartment (104). The charging unit compartment (104) is equipped with an input contactor, a charging contactor and a charging resistor. The charging contactor and the charging resistor are connected in series. The input contactor is connected in parallel on the branch where the charging contactor and the charging resistor are connected in series. The input reactor (103) is connected in series with the input contactor.

3. A modular explosion-proof combined frequency converter for mining according to claim 1, characterized in that: The microprocessor control unit (301) and the control terminal (302) are respectively disposed on the wiring cavity (303), and the wiring cavity (303) is connected to the frequency converter core control module (201).

4. A modular explosion-proof combined frequency converter for mining according to claim 2, characterized in that: The variable frequency drive control module (201) includes a housing two (2018), with a mounting window (2013) embedded on the front side of the housing two (2018). An input module (2014) and a PLC programmable controller (2011) are provided on the mounting window (2013). The input module (2014) and the PLC programmable controller (2011) are connected. A function button module (2016) is provided on the side wall of the housing two (2018). The function button module (2016) and the PLC programmable controller (2011) are connected. The variable frequency drive mechanism (2012), the first output reactor (2015), and the output contactor (2017) are provided inside the housing two (2018). The first output reactor (2015), the output contactor (2017), and the variable frequency drive mechanism (2012) are connected in series. The first output reactor (2015) is connected to the terminal block (102).

5. A modular explosion-proof combined frequency converter for mining according to claim 4, characterized in that: The power frequency control unit module (202) includes a housing three (2025) and a second output reactor (2022) disposed inside the housing three (2025). The housing three (2025) is provided with a power frequency status display window (2021). The power frequency status display window (2021) is provided with a power frequency start button (2023). The power frequency start button (2023) is connected to the inverter core (2012). The second output reactor (2022) and the power frequency contactor (2024) are connected in series. The power frequency contactor (2024) is connected to the output contactor (2017).

6. A modular explosion-proof combined frequency converter for mining according to claim 2, characterized in that: The lighting unit module (203) includes a housing four (2034), a lighting status display window (2031) is provided on the housing four (2034), a lighting control button (2033) is provided on the lighting status display window (2031), a lighting control unit (2032) is provided on the housing four (2034), the lighting control unit (2032) is connected to the lighting control button (2033), and the lighting control unit (2032) is connected to the terminal block (102).

7. A modular explosion-proof combined frequency converter for mining according to claim 2, characterized in that: The soft start module (204) includes a housing (2044), on which a soft start display window (2041) and a soft start control button (2042) are provided. A soft start unit (2043) is provided inside the housing (2044). The soft start unit (2043) is connected to the soft start control button (2042), and the soft start unit (2043) is connected to the terminal block (102).

8. A modular explosion-proof combined frequency converter for mining according to claim 1, characterized in that: The switch module (205) includes a housing six (2055), on which a switch display window (2051), a switch operation panel (2052), and a switch control button (2054) are provided on the side wall. A switch control unit (2053) is provided inside the housing six (2055). The switch control unit (2053) is connected to the switch operation panel (2052) and the switch control button (2054) respectively. The switch control unit (2053) is connected to the terminal block (102).

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