Control device for explosion-proof frequency conversion all-in-one machine

Abstract

The utility model relates to a control device for explosion-proof frequency conversion all-in-one machines, an explosion-proof box is provided with a control unit, a monitoring terminal, an intrinsically safe keyboard and a wireless data transmitting module, and each explosion-proof frequency conversion all-in-one machine comprises a data acquisition terminal and a detection instrument; the detection instrument is connected with the corresponding data acquisition terminal, each data acquisition terminal is connected with the control unit through a communication cable, the monitoring terminal is connected with the intrinsic safety keyboard through a port, the control unit is connected with the monitoring terminal through a port cable, and the control unit is connected with the wireless data transmitting module through a port. The explosion-proof variable-frequency all-in-one machine has the advantages that the control device is arranged on the explosion-proof box and can be connected with one or more explosion-proof variable-frequency all-in-one machines, the control unit and the wireless data transmitting module are arranged in the explosion-proof box, and the monitoring terminal and the intrinsic safety keyboard are arranged on the box door of the explosion-proof box, so that the volume of the explosion-proof box is reduced, the weight is light, the operation is convenient, and the explosion-proof variable-frequency all-in-one machine is convenient to use. And a narrow and small space environment under a coal mine can be well realized.

Description

Technical Field

[0001] The utility model relates to a mine communication control system, in particular to a control device for an explosion-proof frequency conversion integrated machine. Background Art

[0002] The coal mining face of a coal mine includes a scraper, a transfer machine, and a crusher. The explosion-proof frequency conversion integrated machine is the driving device for the operation of the scraper, the transfer machine, and the crusher. The control device of each explosion-proof frequency conversion integrated machine is used to complete the start / stop of the explosion-proof frequency conversion integrated machine, the operation status monitoring, and the temperature, pressure, and flow data monitoring of the cooling water system. The control device has the following deficiencies:

[0003] 1) The control device and the corresponding explosion-proof frequency conversion machine are mostly connected by optical fiber cables. The optical fiber cable connection requires on-site welding of optical cables, which is inconvenient to install. Since the equipment needs to be moved frequently, the optical cable is easily damaged;

[0004] 2) Each control device adopts a flameproof structure. Multiple control devices are large in size and weight, which is not suitable for the narrow space environment of coal mines, and it is inconvenient for maintenance personnel to operate;

[0005] 3) The control device adopts terminal wiring for external wiring. When wiring, the explosion-proof housing of the control device needs to be opened, which is not conducive to rapid installation on site;

[0006] 4) The data of the field equipment operation is saved in the memory card of the control device, because it is not allowed to open the control device in the energized state in the coal mine, and the equipment can only be operated after the power is off. In addition, the explosion-proof housing is a bolt-fastened structure, and opening the control device is time-consuming and laborious. Summary of the invention

[0007] The utility model aims to provide a control device for an explosion-proof frequency conversion integrated machine. The control device is small in size and light in weight, can realize quick installation of cables, does not need power off to remove storage cards, is simple to operate, and is easy to implement.

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0009] A control device for an explosion-proof frequency conversion integrated machine, comprising an explosion-proof box, the explosion-proof box is provided with a control unit, a monitoring terminal, an intrinsically safe keyboard, and a wireless data transmission module, each explosion-proof frequency conversion integrated machine comprises a data acquisition terminal and a detection instrument, and the number of explosion-proof frequency conversion integrated machines is ≥1;

[0010] The detection instrument is connected to the corresponding data acquisition terminal through the port, each data acquisition terminal is connected to the control unit communication cable, the monitoring terminal is connected to the intrinsically safe keyboard through the port, the control unit is connected to the monitoring terminal through the port cable, and the control unit is connected to the wireless data transmission module through the port.

[0011] The data acquisition terminal is PLCⅠ, which includes communication module 4 and communication module 1. Communication module 1 is connected to the control unit, and communication module 4 is connected to the detection instrument through a communication port.

[0012] The control unit includes PLCⅡ, PLCⅡ includes communication module 2 and communication module 3, communication module 2 is connected with communication module 1 through a communication cable, and communication module 3 is connected with the monitoring terminal through a port.

[0013] The control unit also includes a switching power supply, which is used to provide working power for the control device. The PLCⅡ also includes a CPU module. The CPU module, communication module 2, and communication module 3 are connected through ports, and the CPU module is connected to the wireless data transmission module through a port.

[0014] An explosion-proof quick connector is provided on the side arm of the explosion-proof box, and the explosion-proof quick connector is used for providing a sealed passage for cables to enter and exit.

[0015] The detection instruments in each explosion-proof frequency conversion all-in-one machine include an inlet water temperature sensor, a return water temperature sensor, an inlet water pressure sensor, and a flow sensor. The inlet water temperature sensor is used to detect the inlet water temperature of the cooling water of the explosion-proof frequency conversion all-in-one machine, the return water temperature sensor is used to detect the outlet water temperature of the cooling water after passing through the explosion-proof frequency conversion all-in-one machine, the inlet water pressure sensor is used to detect the inlet water pressure of the cooling water of the explosion-proof frequency conversion all-in-one machine, and the flow sensor is used to detect the real-time flow of the cooling water flowing through the explosion-proof frequency conversion all-in-one machine.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The control device is set on an explosion-proof box. The control device can be connected to one or more explosion-proof frequency conversion integrated machines. The control unit and the wireless data transmission module are set in the explosion-proof box. The monitoring terminal and the intrinsically safe keyboard are set on the door of the explosion-proof box, which reduces the size of the explosion-proof box, is light in weight, and is easy to operate. It can be well used in the narrow space environment of coal mines;

[0018] 2. Explosion-proof quick connectors are installed on the side arms of the explosion-proof box, making cable installation convenient and quick. External wiring does not require terminal wiring, saving installation time and effort.

[0019] 3. Operators can use laptops to connect to the control unit and monitoring terminal through the wireless data transmission module, and can export equipment operation data without power outages in coal mines. The operation is simple and easy to implement;

[0020] 4. The monitoring terminal and intrinsically safe keyboard are installed on the door of the explosion-proof box, which is convenient for operators to operate. The operating status of the equipment can be checked through the monitoring terminal at any time, saving time and effort for maintenance;

[0021] 5. The explosion-proof box is provided with an explosion-proof wiring chamber and an intrinsically safe wiring chamber. Wiring holes are provided on the bodies of the explosion-proof wiring chamber and the intrinsically safe wiring chamber. Wiring terminals are provided in the explosion-proof wiring chamber and the intrinsically safe wiring chamber. The explosion-proof frequency conversion integrated machine and the control device are convenient to wire, and the explosion-proof safety is improved.

[0022] 6. Communication module 2 is connected to communication module 1 through a communication cable, which is used to connect the control device to the explosion-proof frequency conversion integrated machine. The number of connecting cables is small, and the underground maintenance of the coal mine is portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure inside the control device box.

[0024] Figure 2 It is a schematic diagram of the external structure of the control device.

[0025] Figure 3 This is a schematic diagram of the installation of explosion-proof quick connectors for control devices.

[0026] Figure 4 It is a schematic diagram of the topological structure of the control device.

[0027] In the figure: 1- monitoring terminal 2- intrinsically safe keyboard 3- intrinsically safe button 4- intrinsically safe wiring chamber 5- explosion-proof wiring chamber 6- control unit 7- wireless data transmission module 8- explosion-proof quick connector. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0029] The following examples are implemented based on the technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0030] [Example 1]

[0031] See Figure 1 to Figure 4A control device for an explosion-proof frequency conversion integrated machine is used in underground coal mine environments and is used to connect to one or more explosion-proof frequency conversion integrated machines. The explosion-proof frequency conversion integrated machine is used to drive a scraper, a transfer machine, and a crusher. The control device includes an explosion-proof box, which is provided with a control unit 6, a monitoring terminal 1, and an intrinsically safe keyboard 2. The model of the monitoring terminal 1 is F104E-CAN, and other models can also be selected. The model of the wireless data transmission module 7 is R300A, and other models can also be selected. The control unit 6 includes PLCⅡ and a switching power supply. The switching power supply is used to provide working power to the control device. The PLCⅡ includes a communication module 2, a communication module 3, and a CPU module. The CPU module, the communication module 2, and the communication module 3 are connected through a port. The communication module 3 is connected to the monitoring terminal 1 through a port. The CPU module is connected to the wireless data transmission module 7 through a port. The monitoring terminal 1 is connected to the intrinsically safe keyboard 2 through a port. The model of the intrinsically safe keyboard 2 is SNK148AB00-A01, and other models can also be selected. An explosion-proof quick connector 8 is provided on the side arm of the explosion-proof box. The model of the explosion-proof quick connector 8 is LBD14-2 / 36, and other models can also be selected. The explosion-proof quick connector 8 is used for sealing the passage for the cable to enter and exit. An explosion-proof wiring chamber 5 and an intrinsically safe wiring chamber 4 are provided on the explosion-proof box. Wiring holes are provided on the bodies of the explosion-proof wiring chamber 5 and the intrinsically safe wiring chamber 4. Wiring terminals are provided in the explosion-proof wiring chamber 5 and the intrinsically safe wiring chamber 4. The explosion-proof frequency conversion integrated machine and the control device are convenient to wire, and the explosion-proof safety is improved. The explosion-proof box door can also be provided with an intrinsically safe button 3. The intrinsically safe button 3 is connected to the PLCⅡ. The intrinsically safe button 3 is used to realize the start, stop, reset, emergency stop and other operations of the scraper, transfer machine, and crusher equipment, which is convenient for operators to operate the equipment.

[0032] Each explosion-proof frequency conversion integrated machine includes a data acquisition terminal and a detection instrument. The number of explosion-proof frequency conversion integrated machines is ≥1. The detection instrument in each explosion-proof frequency conversion integrated machine includes an inlet water temperature sensor, a return water temperature sensor, an inlet water pressure sensor, and a flow sensor. The inlet water temperature sensor is used to detect the inlet water temperature of the cooling water of the explosion-proof frequency conversion integrated machine, the return water temperature sensor is used to detect the outlet water temperature of the cooling water after passing through the explosion-proof frequency conversion integrated machine, the inlet water pressure sensor is used to detect the inlet water pressure of the cooling water of the explosion-proof frequency conversion integrated machine, and the flow sensor is used to detect the real-time flow of the cooling water flowing through the explosion-proof frequency conversion integrated machine; the detection instrument is connected to the corresponding data acquisition terminal through a port; the data acquisition terminal is PLCⅠ, PLCⅠ includes a communication module four and a communication module one, the communication module four and the communication module one are connected through a port, the communication module two and the communication module one are connected through a communication cable, which is used to connect the control device to the explosion-proof frequency conversion integrated machine communication cable to realize data exchange, the communication module four is connected to the detection instrument through a port, and the operator can view the status information of the detection instrument displayed on the monitoring terminal 1 at any time.

[0033] Working process:

[0034] After the control device is powered on for the first time, it establishes communication with the explosion-proof frequency converter through the CanOpen communication module. The explosion-proof frequency converter collects field data such as cooling water flow, cooling water pressure, inlet water temperature, and return water temperature through the data acquisition terminal, and transmits the motor three-phase winding temperature, bearing temperature, heat dissipation substrate temperature, and the operating status of the inverter to the control device together with the field data. After the control device determines that the state of the explosion-proof frequency converter is normal, it sends a charging closing command to the explosion-proof frequency converter, and the explosion-proof frequency converter is in a ready state. Press the start, stop or reset button on the control device to complete the start and stop control of the explosion-proof frequency converter. The control device is used to complete the start and stop of the explosion-proof frequency converter, and detect the operating current, operating voltage, three-phase winding temperature, bearing temperature, heat dissipation substrate temperature, cooling water flow, cooling water pressure, inlet water temperature, return water temperature and other field data of the drive motor. The explosion-proof frequency converter and field data can be displayed on the monitoring terminal on the control device, and the entire control device can also be used as a communication substation to upload data to the coal mine dispatching system. The control unit is the core component of the control device. Both communication module 1 and communication module 2 are CanOpen communication modules, which are connected to multiple explosion-proof frequency conversion integrated machines through the CanOpen bus, and the connection method is a bus communication topology. The data acquisition terminal is installed inside the explosion-proof frequency conversion integrated machine. Communication module 4 is used to collect data from the inlet temperature sensor, return water temperature sensor, pressure sensor, and flow sensor, and upload them to the control unit in the control device. The monitoring terminal is connected to the intrinsically safe input keyboard through the RS485 bus for data display and equipment operation. The monitoring terminal is connected to the control unit and the wireless data transmission module through Ethernet. The wireless data transmission module is installed inside the control device and is connected to the control unit and the monitoring terminal through a switch in a local area network. The operator can use a laptop to connect to the monitoring terminal through the wireless data transmission module and copy the data in the monitoring terminal to the laptop. This process does not require the control device to be powered off or turned on. There are several explosion-proof quick connectors, each of which adopts a quick-plug structure, contains 4 pins, and can connect 4 wires at the same time.

Claims

1. A control device for an explosion-proof frequency conversion integrated machine, characterized in that: It includes an explosion-proof box, which is equipped with a control unit, a monitoring terminal, an intrinsically safe keyboard, and a wireless data transmission module. Each explosion-proof frequency conversion integrated machine includes a data acquisition terminal and a detection instrument. The number of explosion-proof frequency conversion integrated machines is ≥1; The detection instrument is connected to the corresponding data acquisition terminal through the port, each data acquisition terminal is connected to the control unit communication cable, the monitoring terminal is connected to the intrinsically safe keyboard through the port, the control unit is connected to the monitoring terminal through the port cable, and the control unit is connected to the wireless data transmission module through the port.

2. A control device for explosion-proof frequency conversion integrated machine according to claim 1, characterized in that: The data acquisition terminal is PLCⅠ, which includes communication module 4 and communication module 1. Communication module 1 is connected to the control unit, and communication module 4 is connected to the detection instrument through a communication port.

3. A control device for explosion-proof frequency conversion integrated machine according to claim 2, characterized in that: The control unit includes PLCⅡ, PLCⅡ includes communication module 2 and communication module 3, communication module 2 is connected with communication module 1 through a communication cable, and communication module 3 is connected with the monitoring terminal through a port.

4. A control device for explosion-proof frequency conversion integrated machine according to claim 3, characterized in that: The control unit also includes a switching power supply, which is used to provide working power for the control device. The PLCⅡ also includes a CPU module. The CPU module, communication module 2, and communication module 3 are connected through ports, and the CPU module is connected to the wireless data transmission module through a port.

5. The control device for explosion-proof frequency conversion integrated machine according to claim 1, characterized in that: An explosion-proof quick connector is arranged on the side arm of the explosion-proof box, and the explosion-proof quick connector is used for providing a sealed passage for cables to enter and exit.

6. The control device for explosion-proof frequency conversion integrated machine according to claim 1, characterized in that: The detection instruments in each explosion-proof frequency conversion all-in-one machine include an inlet water temperature sensor, a return water temperature sensor, an inlet water pressure sensor, and a flow sensor. The inlet water temperature sensor is used to detect the inlet water temperature of the cooling water of the explosion-proof frequency conversion all-in-one machine, the return water temperature sensor is used to detect the outlet water temperature of the cooling water after passing through the explosion-proof frequency conversion all-in-one machine, the inlet water pressure sensor is used to detect the inlet water pressure of the cooling water of the explosion-proof frequency conversion all-in-one machine, and the flow sensor is used to detect the real-time flow of the cooling water flowing through the explosion-proof frequency conversion all-in-one machine.

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