A portable intelligent sensor calibration device for coal mines

Abstract

The utility model discloses a kind of portable intelligent sensor calibration device of coal mine, including gas storage component, gas storage component side is equipped with connecting plate, box, the first accommodating space of control pipeline is formed;Control valve, programmer are provided in the first accommodating space, control valve one end is communicated with gas storage component by inlet pipeline, control valve other end is communicated with the input end of flow controller, the output end of flow controller is communicated with outlet pipe by exhaust pipeline, the utility model design structure is reasonable by connecting plate and box form first accommodating space, and control valve, flow controller and programmer are installed in the first accommodating space, and gas storage component, control valve and flow controller are communicated by inlet pipeline and exhaust pipeline, realize standard calibration process automation control, accurately according to set flow size and time parameter, release and timing to air flow, solve the problem that current manual operation is prone to improper air flow size adjustment, standard calibration time control is not accurate.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety equipment maintenance technology, specifically a portable intelligent sensor calibration device for coal mines. Background Technology

[0002] In modern coal mines, there are at least a dozen different monitoring and control systems for monitoring equipment and wiring environment. Among them, the safety production monitoring system is the most basic. The safety production monitoring system consists of a ground central station, underground monitoring distribution stations, circuit breakers and various sensors, with gas sensors being the most common. According to coal mine safety regulations, gas sensors must be calibrated regularly.

[0003] Currently, the most commonly used portable calibration devices typically consist of two gas cylinders, a flow meter, and a hose. The two gas cylinders are filled with air and a standard gas, respectively. The outlet of the hose is connected to the sensor to be calibrated. Then, the operator manually opens the corresponding valves on the different gas cylinders and times the process, allowing different gases to pass through the sensor area to calibrate the sensor. However, in practical applications, due to the special environment of underground coal mines and the differences in the skills of the operators, problems such as improper adjustment of airflow and inaccurate control of calibration time can easily occur during the calibration process. This can lead to the inability to complete the calibration work smoothly, affecting the accuracy and reliability of the coal mine's overall production monitoring. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a portable intelligent sensor calibration device for coal mines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A portable intelligent sensor calibration device for coal mines includes a gas storage component. A control pipeline is connected to the top of the gas storage component. An air outlet pipe is connected to the end of the control pipeline away from the gas storage component for communicating with the area of ​​the sensor to be calibrated. A connecting plate is installed on one side of the gas storage component. The side of the connecting plate away from the gas storage component is installed at the opening on one side of the housing so that the connecting plate and the housing cooperate to form a first accommodating space for the control pipeline. The control pipeline includes a control valve installed in the first accommodating space. The input end of the control valve is connected to an air inlet pipeline, the end of the air inlet pipeline is connected to an air storage component, the output end of the control valve is connected to the input end of a flow controller, the output end of the flow controller is connected to an exhaust pipeline, and the end of the exhaust pipeline is connected to an air outlet pipe. The first accommodating space is also equipped with a programmer, which is connected to the control valve and the flow controller for communication.

[0006] Furthermore, the gas storage assembly includes a gas cylinder holder installed at the bottom of the connection side, with at least two gas cylinders on the top of the gas cylinder holder. The top outlet of each of the two gas cylinders is connected to a pressure reducing valve, and the output of the pressure reducing valve is connected to the corresponding air inlet pipe.

[0007] Furthermore, the connecting plate is provided with at least three air inlet and outlet joints, and the air inlet and outlet joints penetrate the connecting plate to connect the inside and outside of the first accommodating space. Both ends of the air inlet and outlet joints are connected to hoses to form two air inlet pipes and one exhaust pipe. In the intake pipe, the ends of the two hoses furthest from the intake and exhaust connectors are connected to the output end of the corresponding pressure reducing valve and the input end of the control valve, respectively. On the exhaust pipe, the ends of the two hoses furthest from the inlet and outlet joints are connected to the outlet pipe and the output end of the flow controller, respectively.

[0008] Furthermore, the top of the enclosure is provided with a slope, and a touch screen is fixedly installed in the middle of the slope. One side of the touch screen is connected to the programmer for human-computer interaction.

[0009] Furthermore, a speaker is provided in the first accommodating space for providing voice prompts during operation.

[0010] Furthermore, a battery is installed in the first accommodating space, with one side of the battery communicating with the touch screen, speaker, programmer, control valve, and flow controller.

[0011] Furthermore, the battery is a rechargeable battery, and a charging port is fixedly installed on the side of the casing, with one side of the charging port communicating with the battery.

[0012] Compared with existing technologies, this portable intelligent sensor calibration device for coal mines has the following advantages: I. This utility model forms a first accommodating space through a connecting plate and a housing, and installs a control valve, a flow controller and a programmer in the first accommodating space. The gas storage component, control valve and flow controller are connected through an air inlet pipe and an exhaust pipe to realize automated control of the calibration process. The airflow is released and timed precisely according to the set flow rate and time parameters, which solves the problems of improper airflow adjustment and inaccurate calibration time control that are easy to occur in existing manual operations.

[0013] Second, the housing of this utility model is also equipped with a touch screen and a speaker, which enables voice prompts for the next operation after power-on and after each user operation. At the same time, the touch screen displays the status of various parameters, guiding users to operate according to the standard procedure, reducing the risk of misoperation, and further improving the accuracy of calibration. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the gas storage cylinder in this utility model; Figure 3 This is a schematic diagram of the internal pipeline connection of the housing in this utility model; Figure 4 This is the electrical schematic diagram of the device of this utility model; Figure 5 This is a three-dimensional schematic diagram of the protective shell in this utility model; Figure 6 This is a cross-sectional view of the protective shell in this utility model; Figure 7 This is a cross-sectional view of the air cushion in this utility model.

[0015] In the diagram: 1. Housing; 2. Touch screen; 3. Connecting plate; 4. Gas cylinder; 5. Pressure reducing valve; 6. Inlet / outlet gas connector; 7. Control valve; 8. Flow controller; 9. Battery; 10. Programmer; 11. Protective shell; 12. Top cover; 13. Protective base; 14. Air cushion; 15. Control tube; 16. Stop block; 17. Spring; 18. Sealing gasket. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] like Figure 1-7 As shown, this utility model provides a technical solution: a portable intelligent sensor calibration device for coal mines, including a gas storage component, a control pipeline connected to the top of the gas storage component, and an outlet pipe connected to the end of the control pipeline away from the gas storage component for communication with the sensor area to be calibrated. A connecting plate 3 is installed on one side of the gas storage component, wherein the side of the connecting plate 3 away from the gas storage component is installed at the opening on one side of the housing 1, so that the connecting plate 3 and the housing 1 cooperate to form a first accommodating space for accommodating the control pipeline; the control pipeline includes a control valve 7 installed in the first accommodating space, an inlet pipe connected to the input end of the control valve 7, the end of the inlet pipe connected to the gas storage component, the output end of the control valve 7 connected to the input end of a flow controller 8, the output end of the flow controller 8 connected to an exhaust pipe, and the end of the exhaust pipe connected to the outlet pipe; a programmer 10 is also provided in the first accommodating space, and the programmer 10 is communicatively connected to the control valve 7 and the flow controller 8 respectively.

[0018] Specifically, the connecting plate 3 is L-shaped, and the back of the housing 1 is fixedly installed with screws. The flow controller 8, located inside the first accommodating space, is installed inside the housing 1 by means of adhesive or screws. The flow controller 8 includes a solenoid valve and a flow sensor, which are used to regulate the flow rate. The control valve 7 is a three-way solenoid valve, which is used to switch different gases into the flow controller 8. In addition, the programmer 10 is a PLC programmer, which can be a KT16SOT intrinsically safe PLC or other intrinsically safe PLCs.

[0019] The gas storage assembly includes a gas cylinder holder installed at the bottom of one side of the connection 3. At least two gas cylinders 4 are located on the top of the gas cylinder holder. Each gas cylinder 4 has a pressure reducing valve 5 connected to its top outlet. The output of the pressure reducing valve 5 is connected to a corresponding air inlet pipe. Specifically, there are two gas cylinders 4: one containing fresh air and the other containing standard gas. A pressure reducing valve 5 is installed at the outlet on top of each cylinder to control the gas cylinder opening and closing and to regulate the airflow.

[0020] The connecting plate 3 is provided with at least three air inlet and outlet connectors 6, which penetrate the connecting plate 3 to connect the inside and outside of the first accommodating space. Both ends of the air inlet and outlet connectors 6 are connected to flexible hoses to form two air inlet pipes and one air outlet pipe. In the air inlet pipes, the ends of the two flexible hoses away from the air inlet and outlet connectors 6 are respectively connected to the output end of the corresponding pressure reducing valve 5 and the input end of the control valve 7. In the air outlet pipes, the ends of the two flexible hoses away from the air inlet and outlet connectors 6 are respectively connected to the air outlet pipe and the output end of the flow controller 8.

[0021] Specifically, the three inlet and outlet gas connectors 6 are all fixedly connected to the connecting plate 3, forming a two-inlet and one-outlet structure. The gas flow direction is as follows: the gas inside the two gas storage cylinders 4 enters the hose located outside the connecting plate 3 through the corresponding pressure reducing valve 5, enters the hose located inside through the corresponding inlet and outlet gas connectors 6, and then enters the control valve 7. After passing through the control valve 7, it can enter the flow controller 8 through the corresponding hose, and then flow to the outside of the box 1 through the last inlet and outlet gas connector 6 and enters the outlet pipe. The outlet pipe is connected to the gas chamber of the sensor to be calibrated for sensor calibration.

[0022] The top of the housing 1 is provided with a slope, and a touch screen 2 is fixedly installed in the middle of the slope. One side of the touch screen 2 is communicatively connected to the programmer 10 for human-machine interaction. A speaker is installed in the first accommodating space for voice prompts during operation. A battery 9 is also installed in the first accommodating space. One side of the battery 9 is communicatively connected to the touch screen 2, the speaker, the programmer 10, the control valve 7, and the flow controller 8. The battery 9 is a rechargeable battery. A charging port and a power switch are fixedly installed on the side of the housing 1. One side of the charging port is communicatively connected to the battery 9.

[0023] Specifically: Battery 9 is an IFRC10C / 3.2V / 10Ah lithium iron phosphate battery, connected to a 12V to 5V step-down module to convert the voltage to 5V, providing 5V / 10Ah power to the ASRPRO 2.0 voice module. The ASRPRO 2.0 voice module is responsible for voice interaction / broadcasting and drives a 3W 8Ω speaker. The battery is also connected to programmer 10, touchscreen 2, and flow sensor, providing them with 10Mm power to ensure normal operation. Touchscreen 2 can be a KC01-43T intrinsically safe human-machine interface or other equivalent intrinsically safe touchscreen devices. It connects to the PLC and flow sensor via RS485 communication to achieve human-machine interaction, such as parameter setting and status display. Programmer 10 is connected to two solenoid valves and two relays, sending switching control signals to the solenoid valves and relays to control the on / off state of the air circuit and the external load.

[0024] During use, first turn on the power. The power indicator light will illuminate, and a prompt voice will play, such as, "Please set the sensor to zero calibration mode and open the gas cylinder valve. After completion, press the start button." Next, after pressing the start button, the controller will control the three-way solenoid valve to switch to the corresponding air cylinder inlet circuit, opening the airflow on the air cylinder side. The touchscreen 2 will display this, and the flow controller 8 will be adjusted to 200 ml / min. After a 90-second timer, the airflow on the air cylinder side will be closed, and a voice prompt will play, such as, "Sensor zero calibration complete. Please set the sensor to full calibration mode. After completion, press the full calibration button." Then, after pressing the full calibration button, the three-way solenoid valve will switch to the standard gas cylinder. The air intake circuit opens the airflow on the standard gas cylinder side, displays and adjusts it to 200 ml / min, and closes the airflow on the standard gas cylinder side after 90 seconds. At the same time, it broadcasts a voice prompt such as "Sensor calibration complete. Please set the sensor to exit calibration state. Calibration complete. Please turn off the cylinder valve and power." Finally, the calibration is completed and recorded by printing or uploading to the network. This allows the programmer 10, control valve 7, and flow controller 8 to guide the user's operation and automatically control the three-way solenoid valve to switch the airflow path. It also accurately adjusts the airflow path to the set parameters and closes it with precise timing, avoiding the problems of improper airflow and inaccurate time control that occur in traditional manual operation.

[0025] It also includes a protective shell 11, the top of which is hinged to a top cover 12, forming a second accommodating space; a protective seat 13 is fixedly connected to the bottom of the second accommodating space, the top of which has a groove, the inner wall of which is inserted into the bottom of the housing 1, the connecting plate 3, and the gas cylinder holder; a support assembly is provided between the housing 1, the connecting plate 3, and the gas cylinder 4 and the inner wall of the second accommodating space, serving as a fixed support and protection; the support assembly includes an air cushion 14 fixedly installed on one side of the inner wall of the second accommodating space, the top of which has a... A control mechanism is used to blow air into and extract air cushion 14 so that air cushion 14 supports housing 1, connecting plate 3 and gas cylinder 4 after expansion; the control mechanism includes a control tube 15 fixedly installed in the second accommodating space, a sealing gasket 18 is slidably connected to the inner wall of the control tube 15, a control rod is rotatably connected to the top of the sealing gasket 18, the top of the control rod extends through the control tube 15 to the outside, and a stop block 16 is fixedly connected to the outside of the control rod outside the control tube 15, the bottom of the stop block 16 is engaged with the top of the control tube 15.

[0026] Specifically, an annular groove is provided inside the top of the control tube 15, and a rectangular hole is provided at the top of the annular groove, which communicates with the top of the control tube 15. The width of the rectangular hole is greater than the width of the stop 16, so that the stop 16 can be inserted into the annular groove through the rectangular hole. The diameter of the annular groove is greater than the length of the stop 16. A spring 17 is fixedly connected to the inner wall of the control tube 15. The bottom of the spring 17 is fixedly connected to the top of the sealing gasket 18, which is used to provide an upward restoring force for the sealing gasket 18.

[0027] In use, rotating the control lever aligns the stop block 16 with the rectangular hole below. Pressing the control lever down inserts the stop block 16 into the annular groove. Rotating the stop block 16 again misaligns it with the rectangular hole, thus locking the stop block 16 and control tube 15 together and securing the control lever. Simultaneously, the downward movement of the control lever causes the sealing gasket 18 to move downwards as well. This connection between the control tube 15 and the air cushion 14 reduces the total internal volume of the control tube 15 and the air cushion 14, compressing the air. This causes the U-shaped air cushion 14 to expand and press against the housing 1, connecting plate 3, and gas cylinder. 4. The surface is fixed and supported. At the same time, the outer side of the structure such as the box body 1 is connected to the protective shell 11 through the U-shaped air cushion 14. The bottom is connected to the bottom through the protective pad 13. The protective pad 13 can be made of foam material to buffer the impact of the outside and protect it. The protective shell 11 can be made of hard plastic material with a leather pad on the outside and a shoulder strap on one side for easy carrying. At the same time, the height of the protective shell 11 is adapted to the height from the bottom of the box body 1 to the lowest point of the slope, so that the touch screen 2 and other buttons on the box body 1 can be exposed after the top cover 12 is opened, and can be operated directly, improving convenience.

Claims

1. A portable intelligent sensor calibration device for coal mines, comprising a gas storage assembly, wherein a control pipeline is connected to the top of the gas storage assembly, and an outlet pipe is connected to the end of the control pipeline away from the gas storage assembly for communication with the sensor area to be calibrated, characterized in that: A connecting plate (3) is installed on one side of the gas storage component. The side of the connecting plate (3) away from the gas storage component is installed at the opening on one side of the housing (1) so that the connecting plate (3) and the housing (1) cooperate to form a first accommodating space for the control pipeline. The control pipeline includes a control valve (7) installed in the first accommodating space. The input end of the control valve (7) is connected to an air inlet pipeline, and the end of the air inlet pipeline is connected to an air storage component. The output end of the control valve (7) is connected to the input end of a flow controller (8). The output end of the flow controller (8) is connected to an exhaust pipeline, and the end of the exhaust pipeline is connected to an air outlet pipe. The first accommodating space is also provided with a programmer (10), and the programmer (10) is communicatively connected to the control valve (7) and the flow controller (8).

2. The portable intelligent sensor calibration device for coal mines according to claim 1, characterized in that: The gas storage assembly includes a gas cylinder seat installed at the bottom of one side of the connecting plate (3). The top of the gas cylinder seat has at least two gas cylinders (4). The top outlet of each of the two gas cylinders (4) is connected to a pressure reducing valve (5). The output end of the pressure reducing valve (5) is connected to the corresponding air inlet pipe.

3. The portable intelligent sensor calibration device for coal mines according to claim 1, characterized in that: The connecting plate (3) is provided with at least three air inlet and outlet connectors (6), and the air inlet and outlet connectors (6) penetrate the connecting plate (3) to connect the inside and outside of the first accommodating space. Both ends of the air inlet and outlet connectors (6) are connected to hoses to form two air inlet pipes and one exhaust pipe. In the air intake pipe, the ends of the two hoses away from the air inlet / outlet connector (6) are respectively connected to the output end of the corresponding pressure reducing valve (5) and the input end of the control valve (7); On the exhaust pipe, the ends of the two hoses away from the inlet / outlet connector (6) are respectively connected to the outlet pipe and the output end of the flow controller (8).

4. The portable intelligent sensor calibration device for coal mines according to claim 1, characterized in that: The top of the housing (1) is provided with a slope, and a touch screen (2) is fixedly installed in the middle of the slope. One side of the touch screen (2) is connected to the programmer (10) for human-computer interaction.

5. The portable intelligent sensor calibration device for coal mines according to claim 1, characterized in that: A speaker is provided in the first accommodating space for providing voice prompts during operation.

6. The portable intelligent sensor calibration device for coal mines according to claim 1, characterized in that: The first accommodating space also contains a battery (9), one side of which is communicatively connected to the touch screen (2), speaker, programmer (10), control valve (7) and flow controller (8).

7. The portable intelligent sensor calibration device for coal mines according to claim 6, characterized in that: The battery (9) is a rechargeable storage battery. A charging port is fixedly installed on the side of the housing (1), and one side of the charging port is communicatively connected to the battery (9).

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