Gas concentration uploading and monitoring system for mining equipment

Abstract

The utility model relates to a gas concentration uploading monitoring system for mining equipment. The gas concentration uploading monitoring system comprises a power-off instrument, a low-concentration laser methane sensor, a signal transmitting end and a signal receiving end, wherein the power-off instrument and the low-concentration laser methane sensor are arranged outside an electric cabinet of the mining equipment; the signal transmitting end is arranged inside the electric cabinet of the mining equipment; the power-off instrument is used for supplying power to the laser methane probe sensor and controlling the on-off and alarm of an electric cabinet of the mining equipment according to the concentration of the methane sensor; the signal transmitting end is used for transmitting a gas concentration signal monitored by the power-off instrument and related data to the receiving end; the signal receiving end is used for receiving a signal of the signal transmitting end and converting the signal into a signal identified by a coal methane monitoring substation; the utility model has the advantages that the problem of linking the methane concentration signal transmitting end and the methane concentration signal receiving end is solved and remote power supply is realized by using the mining equipment starting control line, so that the problem of wireless transmission frame loss is solved, the on-site modification amount is small, and the construction is convenient and simple.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to a gas concentration upload monitoring system for mining equipment. Background Art

[0002] According to the requirements of the National Mine Safety Monitoring Bureau, coal mining machines, tunneling machines and other underground mobile mechanical equipment must complete the installation and networking of the onboard methane power-off instrument. The onboard methane power-off instrument must be accurate in detection and reliable in power-off instrument, with methane electrical interlocking and fault interlocking functions, with an alarm value of 1.00, a power-off value of 1.5%, and an unlocking value of 1.0%. Based on this background, there is an urgent need for a mining equipment gas concentration upload monitoring system to solve the problem that existing coal mining machines and tunneling machines cannot complete the network upload. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a mining equipment gas concentration upload monitoring system for communicating with the coal mine safety supervision system, and to introduce a two-wire Ethernet extender system. The existing cables remain unchanged, and long-distance communication is achieved by using the power cable control core wire to ensure the continuity of communication between the mining equipment and the safety supervision network, ultimately achieving safe and effective monitoring to overcome the shortcomings of the above-mentioned prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A gas concentration upload monitoring system for mining equipment, comprising: a power-off instrument signal transmitting end installed inside an electric control box of the mining equipment, a power-off instrument signal receiving end connected to a front-stage switch of a coal mining machine, and a power-off instrument and a low-concentration laser methane sensor installed on the mining equipment;

[0006] The power-off instrument is used to control the on-off and alarm of the electric control box of the coal mining machine according to the gas concentration checked by the laser gas probe sensor and to supply power to the methane sensor;

[0007] The signal transmitting end is used to transmit the gas concentration signal monitored by the power failure instrument to the signal receiving end.

[0008] The signal transmitting end includes: HG-CAN2AH conversion module (HG-CAN2AH analog to CAN module), GCAN-205 module, OT-PLC604-2P transmission module, and transmitting end OT-801A filter module;

[0009] The HG-CAN2AH conversion module is used to convert the gas concentration signal 200-2000HZ (200-1000 corresponds to gas concentration 0-4%, 1000-2000HZ corresponds to 4-100%) and the power failure signal output by the DJC4 / 660(B)-Z coal mine vehicle-mounted methane power-off instrument external to the unit into a CAN bus data signal and realize communication;

[0010] The GCAN-205 module is used to convert the CAN bus data signal into an Ethernet extender transmission signal TCP (MODBUS);

[0011] The OT-PLC604-2P transmission module is used to output the methane concentration and power failure signal (TCP / MODBUS) to the signal receiving end for data transmission (mining equipment and coal mine gas monitoring substation); wherein, the OT-PLC604-2P transmission module can convert the six-wire Ethernet extender transmission signal into a two-wire Ethernet extender transmission signal;

[0012] The transmitting end OT-801A filter module is used to filter the Ethernet extender transmission signal TCP / MODBUS data of the OT-PLC604-2P transmission module;

[0013] The signal receiving end is used to receive data from the signal transmitting end and convert the data into data recognized by the coal mine gas monitoring substation (the safety monitoring network can directly monitor the data of the coal mine gas monitoring substation);

[0014] The power failure instrument signal receiving end includes: OT-PLC604-2P Ethernet delay receiving module, receiving end OT-801 filter module, ZLAN5143BI protocol conversion module, and JNC300-220S24-DJ switching power supply module.

[0015] The OT-PLC604-2P Ethernet extender receiving module is used to receive the Ethernet extender transmission signal TCP emitted by the OT-PLC604-2P transmission module;

[0016] The receiving end OT-801 filter module is used to perform data filtering on the Ethernet extender transmission signal TCP received by the OT-PLC604-2P Ethernet extender receiving module (filtering out interference signals during the transmission process);

[0017] The ZLAN5143BI protocol conversion module is used to convert the Ethernet extender transmission signal TCP (MODBUS) data into RS485 (MODBUS) protocol data, which becomes recognizable data for the coal mine gas monitoring substation;

[0018] The NC300-220S24-DJ switching power supply module is used to remotely power the signal transmitter, signal receiver, power-off meter and all communication link devices.

[0019] As a preferred embodiment of the present invention, the mining equipment startup loop control line is used to achieve long-distance data transmission and power supply;

[0020] The normally closed contact of the power-off instrument is connected in series to the start-up control circuit of the mining equipment, the signal output port of the power-off instrument is connected to the frequency signal port of the HG-CAN2AH conversion module, and the normally closed contact switch of the power-off instrument is connected in series to the start-up circuit of the mining equipment, thereby completing the power-off protection of the mining equipment;

[0021] The signal output port of the HG-CAN2AH conversion module is connected to the signal input port of the GCAN-205 module;

[0022] The signal output port of the GCAN-205 module is connected to the signal input port of the OT-PLC604-2P transmission module;

[0023] The signal output port of the OT-PLC604-2P transmission module is connected to the transmitting end OT-801A filter module;

[0024] The signal output port of the transmitting end OT-801A filter module is connected to the mining equipment startup control line, and is connected to the input port of the receiving end OT-801 filter module through the mining equipment startup control line;

[0025] The output port of the OT-801 filter module at the receiving end is connected to the OT-PLC604-2P Ethernet delay receiving module;

[0026] The network port (MODBUS\TCP) of the OT-PLC604-2P Ethernet delay receiving module is connected to communicate with the coal mine gas monitoring substation, and the signal output port of the OT-PLC604-2P Ethernet delay receiving module is connected to the signal input port of the ZLAN5143BI protocol conversion module;

[0027] The signal output port (MODBUS\RS485) of the ZLAN5143BI protocol conversion module is connected and communicated with the coal mine gas monitoring substation;

[0028] The positive and negative output ports of the NC300-220S24-DJ switching power supply module are connected to the mining equipment control line, and the control line provides 24V power supply for the power off meter, HG-CAN2AH conversion module, GCAN-205 module, OT-PLC604-2P transmission module, OT-PLC604-2P Ethernet delay receiving module, and ZLAN5143BI protocol conversion module. The input end of the NC300-220S24-DJ switching power supply module is connected to the AC85-260V power supply.

[0029] The advantages and positive effects of the utility model are:

[0030] 1. The utility model solves the problem in the prior art that 4G wireless transmission requires the installation of a large number of 4G network transmission systems through a gas concentration upload monitoring system. By using the mining equipment to start the control line to complete the connection between the signal transmitter and the signal receiver, it not only solves the problem of wireless transmission frame loss, but also requires little on-site modification and is convenient and simple to construct.

[0031] 2. The utility model adopts remote power supply technology and uses the NC300-220S24-DJ switching power supply module (DC24V power supply) installed in the front switch to ensure effective power supply to the devices on the relevant transmission links inside the unit, thereby enabling gas concentration monitoring when the mining equipment is shut down (power outage). BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a circuit connection principle diagram in the utility model.

[0033] Figure 2 It is a schematic diagram of a four-port network connection in the utility model.

[0034] Figure numerals: power-off instrument signal transmitting end 1, HG-CAN2AH conversion module 101, GCAN-205 module 102, OT-PLC604-2P transmission module 103, and transmitting end OT-801A filter module 104, power-off instrument signal receiving end 2, OT-PLC604-2P Ethernet delay receiving module 201, receiving end OT-801 filter module 202, ZLAN5143BI protocol conversion module 203, JNC300-220S24-DJ switching power supply module 204, vehicle-mounted methane power-off instrument 3, coal mine gas monitoring substation 4, conveyor control line 5, coal mining machine control line 6, common cable 7, coal mining machine electrical control box 8, coal mining machine front-stage switch 9. DETAILED DESCRIPTION

[0035] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0036] See also Figure 1-2 , this embodiment provides a mining equipment gas concentration upload monitoring system, including: a signal transmitting end 1 installed inside a coal mining machine electric control box 8, a signal receiving end 2 connected to a mining equipment power supply front switch 9, and a power-off instrument 3 installed on the coal mining machine;

[0037] The unit's external DJC4 / 660(B)-Z coal mine vehicle-mounted methane power-off instrument 3 is used to control the on / off and alarm of the coal mining machine's electrical control box according to the methane concentration of the laser methane sensor and to power the methane sensor. The laser gas probe sensor and the power-off instrument are installed outside the electrical control box of the mining equipment;

[0038] The signal transmitting end 1 in this embodiment is used to transmit the gas concentration signal monitored by the vehicle-mounted methane power-off instrument 3 to the signal receiving end 2;

[0039] The power-off instrument signal transmitting end 1 includes: an HG-CAN2AH conversion module (HG-CAN2AH analog quantity to CAN module) 101, a GCAN-205 module 102, an OT-PLC604-2P transmission module 103, and a transmitting end OT-801A filter module 104;

[0040] The HG-CAN2AH conversion module 101 is used to convert the gas concentration signal 200-2000HZ (200-1000 corresponds to gas concentration 0-4%, 1000-2000HZ corresponds to 4-100%) output by the unit's external DJC4 / 660(B)-Z coal mine vehicle-mounted methane power-off instrument 3 into a CAN bus data signal and realize communication;

[0041] GCAN-205 module 102 is used to convert CAN bus data signals into Ethernet extender transmission signals TCP (MODBUS);

[0042] The OT-PLC604-2P transmission module 103 is used to output the Ethernet extender transmission signal TCP to the power-off instrument signal receiving terminal 2 for data transmission (coal mining machine and coal mine gas monitoring substation); wherein, the OT-PLC604-2P transmission module 103 can convert the six-wire Ethernet extender transmission signal into a two-wire Ethernet extender transmission signal;

[0043] The transmitting end OT-801A filter module 104 is used to perform data filtering on the Ethernet extender transmission signal TCP of the OT-PLC604-2P transmission module 103;

[0044] The signal receiving end 2 is used to receive the signal from the signal transmitting end 1 and convert the signal into a signal recognized by the coal mine gas monitoring substation 4 (the safety monitoring network can directly monitor the data of the coal mine gas monitoring substation 4);

[0045] The signal receiving end 2 includes: an OT-PLC604-2P Ethernet delay receiving module 201, a receiving end OT-801 filter module 202, a ZLAN5143BI protocol conversion module 203, and a JNC300-220S24-DJ switching power supply module 204;

[0046] The OT-PLC604-2P Ethernet extender receiving module 201 is used to receive the Ethernet extender transmission signal TCP transmitted by the OT-PLC604-2P transmission module 103;

[0047] The receiving end OT-801 filter module 202 is used to perform data filtering on the Ethernet extender transmission signal TCP received by the OT-PLC604-2P Ethernet extender receiving module 201 (filtering out interference signals during the transmission process);

[0048] The ZLAN5143BI protocol conversion module 203 is used to convert the Ethernet extender transmission signal TCP (MODBUS) data into RS485 (MODBUS) protocol data, which becomes recognizable data for the coal mine gas monitoring substation 4;

[0049] The NC300-220S24-DJ switching power supply module 204 is used to supply power to the power-off instrument signal transmitting end 1 , the power-off instrument signal receiving end 2 , and the vehicle-mounted methane power-off instrument 3 .

[0050] In this embodiment, the conveyor control line 5 and the coal mining machine control line 6 in the coal mining machine electric control box are respectively connected in series with the common cable 7 to form a loop, that is, the conveyor control line 5 and the common cable 7 form a loop, and the coal mining machine control line 6 and the common cable 7 form a loop;

[0051] The normally closed contact switch NC of the vehicle-mounted methane power-off instrument 3 is connected to the common cable 7, and the signal output port of the vehicle-mounted methane power-off instrument 3 is connected to the frequency signal port of the HG-CAN2AH conversion module 101. After the normally closed contact switch NC of the vehicle-mounted methane power-off instrument 3 is powered off, the conveyor control line 5 and the coal mining machine control line 6 cannot form a loop with the common cable 7, thereby completing the power-off protection of the conveyor control line 5 and the coal mining machine control line 6;

[0052] The signal output port of the HG-CAN2AH conversion module 101 is connected to the signal input port of the GCAN-205 module 102;

[0053] The signal output port of the GCAN-205 module 102 is connected to the signal input port of the OT-PLC604-2P transmission module 103;

[0054] The signal output port of the OT-PLC604-2P transmission module 103 is connected to the transmitting end OT-801A filter module 104;

[0055] The signal output port of the transmitting end OT-801A filter module 104 is connected to the conveyor control line 5 and the coal mining machine control line 6, and is connected to the input port of the receiving end OT-801 filter module 202 through the conveyor control line 5 and the coal mining machine control line 6;

[0056] The output port of the receiving end OT-801 filter module 202 is connected to the OT-PLC604-2P Ethernet delay receiving module 201;

[0057] The network port (MODBUS\TCP) of the OT-PLC604-2P Ethernet delay receiving module 201 is connected to the coal mine gas monitoring substation 4 for communication, and the signal output port of the OT-PLC604-2P Ethernet delay receiving module 201 is connected to the signal input port of the ZLAN5143BI protocol conversion module 203;

[0058] The signal output port (MODBUS\RS485) of the ZLAN5143BI protocol conversion module 203 is connected to communicate with the coal mine gas monitoring substation 4;

[0059] The positive and negative output ports of the NC300-220S24-DJ switching power supply module 204 are connected to the conveyor control line 5 and the coal mining machine control line 6, and provide 24V power supply for the vehicle-mounted methane power-off instrument 3, HG-CAN2AH conversion module 101, GCAN-205 module 102, OT-PLC604-2P transmission module 103, OT-PLC604-2P Ethernet delay receiving module 201, and ZLAN5143BI protocol conversion module 203 through the conveyor control line 5 and the coal mining machine control line 6. The input end of the NC300-220S24-DJ switching power supply module 204 is connected to the AC85-260V power supply.

[0060] Working principle: The networked monitoring of the vehicle-mounted methane power-off instrument 3 adopts the conveyor control line 5, the coal mining machine control line 6, and the common cable 7 for transmission, wherein the power-off instrument signal transmitting end 1 of the vehicle-mounted methane power-off instrument 3 is installed in the coal mining machine electrical control box 8, and the power-off instrument signal receiving end 2 of the vehicle-mounted methane power-off instrument 3 is installed in the front-stage switch 9 of the unit. The vehicle-mounted methane power-off instrument 3 transmits the signal to the power-off instrument signal receiving end 2 through the power-off instrument signal transmitting end 1, and the power-off instrument signal receiving end 2 converts the signal into a signal that can be transmitted by the coal mine gas monitoring substation 4, and finally completes the monitoring of the vehicle-mounted methane power-off instrument 3 by the coal mine gas monitoring substation 4.

[0061] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A mining equipment gas concentration upload monitoring system, characterized in that: include: A signal transmitter installed inside the electric control box of the mining equipment, a signal receiver connected to the front stage of the mining equipment power supply, and a power failure meter and a laser methane sensor installed on the mining equipment; The power-off device is used to supply power to the laser gas probe sensor and control the on / off and alarm of the electric control box of the coal mining machine according to the methane sensor concentration, wherein the laser gas probe sensor is installed outside the electric control box of the mining equipment; The power-off instrument signal transmitting end is used to transmit the gas concentration signal monitored by the power-off instrument to the signal receiving end; The power failure instrument signal transmitter includes: HG-CAN2AH conversion module, GCAN-205 module, OT-PLC604-2P transmission module, and transmitter OT-801A filter module. The HG-CAN2AH conversion module is used to convert the gas concentration signal output by the power-off instrument into a CAN bus data signal; The GCAN-205 module is used to convert the CAN bus data signal into an Ethernet extender transmission signal TCP / MODBUS; The OT-PLC604-2P transmission module is used to output the Ethernet extender transmission signal (TCP / MODBUS) to the signal receiving end for data transmission; The transmitting end OT-801A filter module is used to perform data filtering on the Ethernet extender transmission signal TCP of the OT-PLC604-2P transmission module; The signal receiving end is used to receive the signal from the transmitting end and convert the signal into a signal recognized by the coal mine gas monitoring substation; The signal receiving end includes: an OT-PLC604-2P Ethernet delay receiving module, a receiving end OT-801 filter module, a ZLAN5143BI protocol conversion module, and a JNC300-220S24-DJ switching power supply module; The OT-PLC604-2P Ethernet extender receiving module is used to receive the Ethernet extender transmission signal TCP / MODBUS transmitted by the OT-PLC604-2P transmission module; The receiving end OT-801 filter module is used to perform data filtering on the Ethernet extender transmission signal TCP received by the OT-PLC604-2P Ethernet extender receiving module; The ZLAN5143BI protocol conversion module is used to convert the Ethernet extender transmission signal TCP / MODBUS data into RS485 / MODBUS protocol data, which becomes recognizable data for the coal mine gas monitoring substation; The NC300-220S24-DJ switching power supply module is used to power the signal transmitter, signal receiver, power-off instrument and communication link devices; Use the start-up line of the electric control box of the mining equipment to complete the communication link and long-distance power supply; The normally closed contact switch of the power-off instrument is connected in series with the starting force control loop, and the signal output port of the power-off instrument is connected to the frequency signal port of the HG-CAN2AH conversion module; The signal output port of the HG-CAN2AH conversion module is connected to the signal input port of the GCAN-205 module; The signal output port of the GCAN-205 module is connected to the signal input port of the OT-PLC604-2P transmission module; The signal output port of the OT-PLC604-2P transmission module is connected to the transmitting end OT-801A filter module; The signal output port of the OT-801A filter module at the transmitting end is connected to the mining equipment control line, and is connected to the input port of the OT-801 filter module at the receiving end through the mining equipment start control line; The output port of the OT-801 filter module at the receiving end is connected to the OT-PLC604-2P Ethernet delay receiving module; The network port of the OT-PLC604-2P Ethernet delay receiving module is connected to the coal mine gas monitoring substation for communication, and the signal output port of the OT-PLC604-2P Ethernet delay receiving module is connected to the signal input port of the ZLAN5143BI protocol conversion module; The signal output port of the ZLAN5143BI protocol conversion module is connected and communicated with the coal mine gas monitoring substation; The positive and negative output ports of the NC300-220S24-DJ switching power supply module are connected to the mining equipment control line, and provide 24V power supply for the power off meter, HG-CAN2AH conversion module, GCAN-205 module, OT-PLC604-2P transmission module, OT-PLC604-2P Ethernet delay receiving module, and ZLAN5143BI protocol conversion module through the mining equipment startup control line. The input end of the NC300-220S24-DJ switching power supply module is connected to the AC85-260V power supply.

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