A system capable of calibrating multiple portable methane detectors

Abstract

The utility model discloses a system can carry out the system of the calibration of multiple portable methane detector, include: gas cylinder, detection panel, inlet total valve, multiple flowmeters, multiple interface pipes, multiple communication pipes, its one end is linked with the upper end export of corresponding flowmeter intercommunication, its other end is linked with the standard gas input interface of corresponding portable methane detector intercommunication, and then makes the methane gas in the gas cylinder in turn through interface pipe, flowmeter, communication pipe and enters portable methane detector, carries out the calibration to portable methane detector, the utility model effectively solved the portable methane detector and exceeded the calibration period, ensured the instrument accuracy, improved the detection efficiency, thereby indirectly solved the mine hidden danger.

Description

Technical Field

[0001] This utility model belongs to the field of mining peripheral equipment, and in particular relates to a system that can calibrate multiple portable methane detectors. Background Technology

[0002] Portable methane detectors are portable devices used for rapid on-site detection of methane concentrations, widely applied in mining, petrochemical, and municipal gas industries. Their core working principles fall into three main categories: catalytic combustion detectors utilize the heat generated by methane combustion to cause bridge imbalance, offering high sensitivity and suitability for concentrations within the lower explosive limit; infrared detectors calculate concentration based on methane's absorption characteristics of specific wavelengths of infrared light, exhibiting strong anti-interference capabilities and long lifespan; and semiconductor detectors detect changes in resistance caused by the reaction of methane with semiconductor materials, offering lower cost but susceptibility to environmental influences. The devices primarily consist of sensors, signal processing circuits, a display screen, and a battery, featuring real-time detection, high sensitivity, and a low false alarm rate. They typically include audible and visual alarms, and some models also support data storage and export.

[0003] During the calibration of portable methane detectors, instrument maintenance personnel reported that only one detector could be calibrated at a time, while there were many portable methane detectors, making calibration by one person too inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a system that can calibrate multiple portable methane detectors, thereby solving the problems of slow calibration speed and low efficiency of portable methane detectors.

[0005] This utility model adopts the following technical solution: a system capable of calibrating multiple portable methane detectors, comprising: The gas cylinder contains 2% methane gas. The test panel has an "L" shaped structure, with its horizontal section placed on the test bench and its vertical section perpendicular to the horizontal section and extending upwards. The main inlet valve is fixed on the vertical section of the detection panel, and its inlet is connected to the outlet of the gas cylinder. Multiple flow meters are arranged vertically and at intervals in a vertical section near the detection panel; Multiple interface pipes, one end of which is connected to the outlet of the main inlet valve, and the other end of which is connected to the lower inlet of the corresponding flow meter; Multiple connecting pipes, one end of which is connected to the upper outlet of the corresponding flow meter, and the other end of which is connected to the standard gas input interface of the corresponding portable methane detector, so that the methane gas in the gas cylinder enters the portable methane detector in sequence through the interface pipe, flow meter, and connecting pipe, thereby calibrating the portable methane detector.

[0006] The beneficial effects of this utility model are: This invention effectively solves the problem of portable methane detectors exceeding the calibration period, ensures instrument accuracy, improves detection efficiency, and thus indirectly solves potential mine hazards. This invention, by setting up an interface pipe, a connecting pipe, and a flow meter, divides the methane gas in the cylinder into multiple paths through the main inlet valve, and then allows each path to enter a portable methane detector, thereby accelerating the calibration efficiency. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the detection panel of this utility model.

[0008] The components are: 10. Gas cylinder; 11. Detection panel; 12. Main inlet valve; 13. Vertical section; 14. Horizontal section; 15. Flow meter; 16. Interface pipe; 17. Connecting pipe; 18. Support rod; 19. Portable methane detector. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0010] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more. The term "orientation" in this utility model refers to the orientation of the utility model within the... Figure 1 Description of the state's progression.

[0011] This utility model discloses a system for calibrating multiple portable methane detectors, such as... Figure 1 and 2 As shown, it includes: gas cylinder 10, detection panel 11, inlet main valve 12, multiple flow meters 15, multiple interface pipes 16, and multiple connecting pipes 17.

[0012] Cylinder 10 contains 2% methane gas.

[0013] The detection panel 11 has an "L" shaped structure. The horizontal section 14 of the detection panel 11 is placed on the test bench. The vertical section 13 of the detection panel 11 is perpendicular to the horizontal section 14 and extends upward.

[0014] The main inlet valve 12 is fixed on the vertical section 13 of the detection panel 11, and the inlet of the main inlet valve 12 is connected to the outlet of the gas cylinder 10.

[0015] Multiple flow meters 15 are arranged vertically and at intervals at positions close to the vertical section 13 of the detection panel 11.

[0016] One end of multiple interface pipes 16 is connected to the outlet of the main inlet valve 12, and the other end of multiple interface pipes 16 is connected to the lower inlet of the corresponding flow meter 15.

[0017] Multiple connecting pipes 17 are connected at one end to the upper outlet of the corresponding flow meter 15, and the other end of multiple connecting pipes 17 is connected to the standard gas input interface of the corresponding portable methane detector 19, so that the methane gas in the gas cylinder 10 enters the portable methane detector 19 in sequence through the interface pipe 16, the flow meter 15, and the connecting pipe 17, and the portable methane detector 19 is calibrated.

[0018] This utility model also includes multiple support rods 18, which are arranged horizontally. One end of each support rod 18 is fixedly connected to the front side of the vertical section 13 of the detection panel 11, and the other end of each support rod 18 extends forward. Each support rod 18 is used to bypass the connecting pipe 17, thereby making the flow meter 15 vertically suspended on the front side of the detection panel 11. Example

[0019] During the calibration of portable methane detectors at a certain mine, instrument maintenance personnel reported that only one detector could be calibrated at a time, and since there were many portable methane detectors, the efficiency of one person calibrating them was too low.

[0020] By utilizing this utility model, five original safety monitoring and control team waste sensor calibration gas cylinder flow meters 15 are connected side by side to interface pipe 16, then an inlet main valve 12 is installed, and then five connecting pipes 17 are connected to the inlet main valve 12. Finally, the five connecting pipes 17 are connected to the standard gas input interface of portable methane detector 19, thereby realizing the calibration of five portable methane detectors 19 in a single operation and improving calibration efficiency.

[0021] Before the improvement, because the gas delivery device only had one gas outlet pipe, only one device could be calibrated at a time, and the calibration waiting time was long. The low calibration efficiency easily caused the portable methane detector to exceed the calibration cycle, resulting in reduced accuracy during use. It took one person three shifts to complete the calibration work of all 19 portable methane detectors.

[0022] Improvement method: Remove the intact flow meter 15 from the abandoned gas cylinder 10 of the safety monitoring team and clean it. Connect and fix the customized inlet main valve 12 with rubber tubing and wooden board to obtain the present invention.

[0023] Using this invention, all portable methane detectors 19 can be calibrated by a single person in one shift, increasing efficiency to three times the original level.

[0024] By repairing and reusing the discarded gas cylinders 10, the cost of purchasing flow meters 15 was saved, with an estimated saving of 1,000 yuan. By reducing the calibration work time for instrument maintenance workers from three working days to one working day, the monthly labor cost is estimated to be 500 yuan. This effectively solved the problem of the portable methane detector 19 exceeding its calibration cycle, ensuring instrument accuracy, improving detection efficiency, and thus indirectly solving potential hazards in the mine.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. 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 system for calibrating multiple portable methane detectors, characterized in that, include: Gas cylinder (10) containing 2% methane gas; The detection panel (11) has an "L" shaped structure. Its horizontal section (14) is placed on the test bench, and its vertical section (13) is perpendicular to the horizontal section (14) and extends upward. The main inlet valve (12) is fixed on the vertical section (13) of the detection panel (11), and its inlet is connected to the outlet of the gas cylinder (10); Multiple flow meters (15) are arranged vertically and at intervals at positions close to the vertical section (13) of the detection panel (11); Multiple interface pipes (16) are connected at one end to the outlet of the main inlet valve (12) and at the other end to the lower inlet of the corresponding flow meter (15). Multiple connecting pipes (17) are connected at one end to the upper outlet of the corresponding flow meter (15) and at the other end to the standard gas input interface of the corresponding portable methane detector (19), so that the methane gas in the gas cylinder (10) enters the portable methane detector (19) in sequence through the interface pipe (16), the flow meter (15) and the connecting pipe (17), and the portable methane detector (19) is calibrated.

2. The system for calibrating multiple portable methane detectors according to claim 1, characterized in that, Also includes: Multiple support rods (18) are horizontally arranged, with one end fixedly connected to the front side of the vertical section (13) of the detection panel (11), and the other end extending forward. Each support rod (18) is used to connect the pipe (17) to pass around, thereby making the flow meter (15) vertically suspended on the front side of the detection panel (11).

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