Pipeline gas multi-parameter inspection instrument

Abstract

The utility model provides a pipeline gas multi -parameter inspection appearance, including explosion -proof shell, main control chip, battery module, battery compartment, communication module, display screen, pressure sensor, laser methane sensor, CO sensor and differential pressure flowmeter, main control chip and communication module set up in explosion -proof shell, be equipped with display screen on explosion -proof shell, the below of display screen is equipped with battery compartment, install battery module in battery compartment, be equipped with pressure sensor below battery compartment, be equipped with laser methane sensor and CO sensor on the top of explosion -proof shell, laser methane sensor is used for real -time monitoring gas concentration, and CO sensor is used for real -time monitoring CO gas concentration. The utility model solves the single function of existing equipment, the poor portability, the data record is complicated, the problem such as the insufficient endurance, realized the real -time, accurate, convenient monitoring of gas pipeline multi -parameter, provided reliable technical support for coal mine gas disaster control.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety monitoring technology, specifically a multi-parameter pipeline gas inspection instrument, a portable inspection instrument used for real-time monitoring of multiple parameters such as gas concentration, flow rate, pressure, and temperature in gas drainage pipelines. Background Technology

[0002] Among coal mine disasters, mine gas explosions and coal and gas outbursts are the most serious. Therefore, the management of mine gas disasters is particularly important for coal mine safety production. Article 47 of the "Detailed Rules for the Prevention and Control of Coal and Gas Outbursts" stipulates that when pre-draining coal seam gas, the start-up time of each borehole should be recorded, and the gas concentration and drainage negative pressure of the borehole should be measured regularly. Automatic drainage metering devices should be installed in each unit, and the concentration of gas in the pipeline, drainage negative pressure, drainage flow rate, temperature, carbon monoxide volume fraction, etc. should be monitored or tested according to the unit for testing the effectiveness of the measures. The gas drainage volume of the unit should be automatically metered or statistically calculated, and the automatic metering data or statistical calculation data should be used as the basic data for testing the pre-drainage effect.

[0003] Existing gas pipeline monitoring equipment has the following problems: (1) Traditional equipment only supports the detection of a single parameter (such as concentration or flow rate), requiring multiple operations or equipment replacements, and has a relatively simple function.

[0004] (2) Most of the existing monitoring equipment are fixed equipment, which have problems such as large size and complicated installation, making it difficult to meet the needs of mobile inspection in the well.

[0005] (3) The detection data relies on manual recording, which is prone to errors and cannot be uploaded for analysis in real time.

[0006] (4) Existing portable devices have low battery capacity and cannot meet the needs of long-term inspection. Utility Model Content

[0007] To address the aforementioned problems, the purpose of this invention is to provide a multi-parameter pipeline gas inspection instrument.

[0008] To achieve the above objectives, the present invention employs a multi-parameter pipeline gas monitoring instrument, comprising an explosion-proof housing, a main control chip, a battery module, a battery compartment, a communication module, a display screen, a pressure sensor, a laser methane sensor, a CO sensor, and a differential pressure flow meter. The main control chip and communication module are housed within the explosion-proof housing. A display screen is mounted on the explosion-proof housing, and a battery compartment is located below the display screen. A battery module is installed within the battery compartment. A pressure sensor is located below the battery compartment. A laser methane sensor and a CO sensor are located above the explosion-proof housing. The laser methane sensor is used to monitor the gas concentration in real time, and the CO sensor is used to monitor the CO gas concentration in real time. A differential pressure flow meter is installed on the side of the housing. The differential pressure flow meter includes a knob orifice plate, a water column meter, an air inlet, an air outlet, and a liquid displacement measuring instrument. The knob orifice plate and the air inlet are located on the side of the housing, with the knob orifice plate positioned above the air inlet. The knob orifice plate is connected to the air inlet and is used to control the air intake. The water column meter is a hollow U-shaped tube used to hold water. The air outlet is located on the upper surface of the housing, adjacent to the water column meter. The left side of the water column meter is connected to the air inlet via a pipe, and the right side is connected to the air outlet via a pipe. A liquid displacement measuring instrument is installed on the outside of the left side of the water column meter. The main control chip is connected to the communication module. The main control chip is also connected to the pressure sensor, laser methane sensor, CO sensor, temperature sensor, and liquid displacement measuring instrument. The main control chip is connected to the display screen. The battery module is connected to the main control chip, communication module, display screen, laser methane sensor, CO sensor, and pressure sensor. The liquid displacement measuring instrument is installed on an explosion-proof enclosure and is used to measure the difference in liquid column height between the water level in the left and right pipes. The liquid column height difference is then sent to the main control chip, which calculates the instantaneous flow rate.

[0009] Furthermore, a temperature sensor is also installed on the explosion-proof housing. The temperature sensor is connected to a temperature compensation module, which is connected to the main control chip. The temperature sensor is used to monitor ambient temperature data in real time, and the temperature compensation module is used to perform temperature compensation on the ambient temperature data and send the temperature-compensated data to the main control chip.

[0010] Furthermore, the temperature sensor is a PT100 platinum resistance thermometer.

[0011] Furthermore, the explosion-proof housing is also equipped with a switch and an adjustment button, both of which are connected to the main control chip.

[0012] Furthermore, the main control chip is an STM32F407, and it has a built-in 16GB storage chip for storing data.

[0013] Furthermore, the battery module uses a 12V / 5000mAh lithium battery with a battery life of ≥10 hours and a standby current of <5mA.

[0014] Furthermore, the communication module adopts a Bluetooth 5.0 and LoRa dual-mode transmission module, and the communication module can also communicate with a mobile phone or an intrinsically safe handheld terminal for mining.

[0015] Furthermore, the explosion-proof enclosure has an IP67 protection rating.

[0016] Furthermore, the display screen is an OLED display screen.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model can complete multi-parameter detection in a single operation. With the main control chip as the core control unit, it integrates the entire process of receiving, processing, transmitting and coordinating multi-sensor data, which can save more than 50% of inspection time.

[0018] 2. This utility model has high safety. By adopting an explosion-proof shell and a wireless transmission communication module, it avoids close contact between people and high-risk areas.

[0019] 3. This utility model adopts a modular structure, which reduces maintenance costs, and uses a replaceable lithium battery, which extends the equipment life.

[0020] 4. This utility model achieves simultaneous acquisition of concentration, flow rate, pressure, and temperature data through various sensors, which greatly reduces the error rate of the acquired data.

[0021] In summary, this utility model, by integrating technologies such as multi-sensor integration, modular design, explosion-proof protection, and real-time communication, solves the problems of existing equipment such as limited functionality, poor portability, cumbersome data recording, and insufficient battery life. It enables real-time, accurate, and convenient monitoring of multiple parameters in gas pipelines, providing reliable technical support for coal mine gas disaster management. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a pipeline gas multi-parameter inspection instrument according to this utility model; Figure 2 This is a schematic diagram of the left side structure of the explosion-proof housing of this utility model; In the diagram, 1. Pressure sensor; 21. Temperature sensor; 22. Temperature compensation module; 3. Battery compartment; 31. Battery module; 4. Adjustment button; 5. Display screen; 6. Laser methane sensor; 7. Explosion-proof housing; 801. Knob orifice plate; 802. Water column meter; 803. Air inlet; 804. Air outlet; 805. Liquid displacement measuring instrument; 9. Switch; 10. CO sensor; 11. Main control chip; 12. Communication module. Detailed Implementation

[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0024] Example 1

[0025] like Figures 1 to 2As shown, a multi-parameter pipeline gas monitoring instrument includes an explosion-proof housing 7, a main control chip 11, a battery module 31, a battery compartment 3, a communication module 12, a display screen 5, a pressure sensor 1, a laser methane sensor 6, a CO sensor 10, and a differential pressure flow meter. The main control chip 11 and the communication module 12 are housed inside the explosion-proof housing 7. The display screen 5 is mounted on the explosion-proof housing 7, and the battery compartment 3 is located below the display screen 5. The battery module 31 is installed inside the battery compartment 3. The pressure sensor 1 is located below the battery compartment 3, and the laser methane sensor 6 and the CO sensor 10 are located above the explosion-proof housing 7. The laser methane sensor 6 is used to monitor the gas concentration in real time, and the CO sensor 10 is used to monitor the CO gas concentration in real time. A differential pressure flow meter is installed on the side of the outer casing 7. The differential pressure flow meter includes a knob orifice plate 801, a water column meter 802, an air inlet 803, an air outlet 804, and a liquid displacement measuring instrument 805. The knob orifice plate 801 and the air inlet 803 are located on the side of the outer casing 7, with the knob orifice plate 801 positioned above the air inlet 803. The knob orifice plate 801 is connected to the air inlet 803 and is used to control the air intake volume of the air inlet 803. The water column meter 802 is a hollow U-shaped tube used to hold water. The air outlet 804 is located on the upper surface of the outer casing 7, adjacent to the side of the water column meter 802. The pipe body is connected to the air inlet 803 via a pipeline, and the right side pipe body is connected to the air outlet 804 via a pipeline. A liquid displacement measuring instrument 805 is installed on the outside of the left side pipe body of the water column meter 802. The main control chip 11 is connected to the communication module 12 via a signal. At the same time, the main control chip 11 is also connected to the pressure sensor 1, the laser methane sensor 6, the CO sensor 10, the temperature sensor 21, and the liquid displacement measuring instrument 805 via a signal. The main control chip 11 is connected to the display screen 5. The battery module 31 is connected to the main control chip 11, the communication module 12, the display screen 5, the laser methane sensor 6, the CO sensor 10, and the pressure sensor 1 via a pipeline. The liquid displacement measuring instrument 805 is installed on the explosion-proof housing 7 and is used to measure the difference in liquid column height between the water level in the left and right pipes. The liquid column height difference is sent to the main control chip 11, which calculates the instantaneous flow rate value.

[0026] The explosion-proof housing 7 is also equipped with a temperature sensor 21, which is connected to a temperature compensation module 22. The temperature compensation module 22 is connected to the main control chip 11. The temperature sensor 21 is used to monitor ambient temperature data in real time, and the temperature compensation module 22 is used to perform temperature compensation on the ambient temperature data and send the temperature-compensated data to the main control chip 11.

[0027] The temperature sensor 21 is a PT100 platinum resistance thermometer.

[0028] The explosion-proof housing 7 is also equipped with a switch 9 and an adjustment button 4, both of which are connected to the main control chip 11. The adjustment button 4 realizes the switching of working mode (measurement / calibration), the adjustment of the range of the laser methane sensor 6 and the CO sensor 10, and the setting of the knob orifice plate 801. It adopts the operation mode of short press to switch functions and long press to enter the setting.

[0029] The main control chip 11 is an STM32F407, and it has a built-in 16GB storage chip for storing data.

[0030] The battery module 31 uses a 12V / 5000mAh lithium battery, with a battery life of ≥10 hours and a standby current of <5mA. It prompts for battery replacement when the battery level drops below 10% and sends an alarm via the app. The communication module 12 adopts a Bluetooth 5.0 and LoRa dual-mode transmission module, and the communication module 12 can also communicate with a mobile phone or an intrinsically safe handheld terminal for mining.

[0031] The explosion-proof enclosure 7 has an IP67 protection rating and is certified for explosion protection (Exia I MA). The explosion-proof enclosure 7 also features a magnetic quick-connect interface, which supports one-handed operation for connecting pipes.

[0032] The display screen 5 is an OLED display screen.

[0033] The working process of this utility model: The first step is to place the gas multi-parameter inspection instrument of this utility model in the working position and connect it to the underground pipeline. Then, turn on the switch 9. The pressure sensor 1 starts to monitor the underground atmospheric pressure, the temperature sensor 21 monitors the underground temperature, and the temperature compensation module 22 performs temperature compensation correction on the temperature value measured by the temperature sensor 21 to ensure the accuracy of temperature measurement. The second step involves adjusting the range of the laser methane sensor 6 and the CO sensor 10 by adjusting button 4, and then taking measurements. The laser methane sensor 6 monitors the methane concentration, and the CO sensor 10 monitors the CO concentration. The monitoring data is transmitted to the main control chip 11 in real time. The main control chip 11 transmits the data to the display screen 5 for display, and then transmits it to a mobile phone or an intrinsically safe handheld terminal for mining via the communication module 12.

[0034] The third step involves detecting the gas flow rate in the pipeline. The operator rotates the knob orifice plate 801 to change the orifice diameter. The knob orifice plate adjustment has five settings to control the flow rate and match the range of the water column meter 802. The gas then enters the water-filled water column meter 802. The liquid displacement sensor 805 monitors the liquid column height difference in the water column meter 802 in real time and, after conversion by the main control chip 11, displays the flow rate value on the display screen 5. The maximum scale of the water column meter 802 is set to 10cm to maintain detection accuracy and avoid frequent water additions. After measurement, the gas is discharged into the environment through the outlet 804 connected to the right side pipe of the water column meter 802. The entire process achieves simultaneous measurement of pressure, temperature, methane and CO concentrations, and flow rate.

[0035] This utility model of a pipeline gas multi-parameter inspection instrument integrates multiple sensors, a differential pressure flow meter, and an intelligent control module to achieve integrated monitoring of gas concentration, flow rate, pressure, temperature, and CO concentration. It solves the problems of existing equipment having limited functions, being inconvenient to move, and having cumbersome data recording, thereby improving the efficiency and accuracy of underground gas inspection and providing reliable technical support for coal mine gas disaster management.

[0036] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A multi-parameter pipeline gas monitoring instrument, characterized in that, The device includes an explosion-proof enclosure, a main control chip, a battery module, a battery compartment, a communication module, a display screen, a pressure sensor, a laser methane sensor, a CO sensor, and a differential pressure flow meter. The main control chip and communication module are housed within the explosion-proof enclosure. The explosion-proof enclosure has a display screen, and below the display screen is a battery compartment containing the battery module. Below the battery compartment is a pressure sensor, and above the explosion-proof enclosure are a laser methane sensor and a CO sensor. The laser methane sensor is used to monitor methane concentration in real time, and the CO sensor is used to monitor CO gas concentration in real time. A differential pressure flow meter is installed on the side of the housing. The differential pressure flow meter includes a knob orifice plate, a water column meter, an air inlet, an air outlet, and a liquid displacement measuring instrument. The knob orifice plate and the air inlet are located on the side of the housing, with the knob orifice plate positioned above the air inlet. The knob orifice plate is connected to the air inlet and is used to control the air intake. The water column meter is a hollow U-shaped tube used to hold water. The air outlet is located on the upper surface of the housing, adjacent to the water column meter. The left side of the water column meter is connected to the air inlet via a pipe, and the right side is connected to the air outlet via a pipe. A liquid displacement measuring instrument is installed on the outside of the left side of the water column meter. The main control chip is connected to the communication module. The main control chip is also connected to the pressure sensor, laser methane sensor, CO sensor, temperature sensor, and liquid displacement measuring instrument. The main control chip is connected to the display screen. The battery module is connected to the main control chip, communication module, display screen, laser methane sensor, CO sensor, and pressure sensor. The liquid displacement measuring instrument is installed on an explosion-proof enclosure and is used to measure the difference in liquid column height between the water level in the left and right pipes. The liquid column height difference is then sent to the main control chip, which calculates the instantaneous flow rate.

2. The pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The explosion-proof housing is also equipped with a temperature sensor, which is connected to a temperature compensation module. The temperature compensation module is connected to the main control chip. The temperature sensor is used to monitor ambient temperature data in real time, and the temperature compensation module is used to compensate for the ambient temperature data and send the compensated data to the main control chip.

3. The pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The temperature sensor is a PT100 platinum resistance thermometer.

4. The pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The explosion-proof housing is also equipped with a switch and an adjustment button, both of which are connected to the main control chip.

5. A pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The main control chip is an STM32F407, and it has a built-in 16GB storage chip for storing data.

6. A pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The battery module uses a 12V / 5000mAh lithium battery, with a battery life of ≥10 hours and a standby current of <5mA.

7. A pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The communication module adopts a dual-mode transmission module of Bluetooth 5.0 and LoRa, and the communication module can also communicate with a mobile phone or an intrinsically safe handheld terminal for mining.

8. A pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The explosion-proof enclosure has an IP67 protection rating.

9. A pipeline gas multi-parameter inspection instrument as described in claim 1, characterized in that, The display screen is an OLED display screen.

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