CN206832727U - Mine Gas detection means - Google Patents

Abstract

The utility model discloses a mine gas detection device, which comprises a detection housing with a rectangular structure, a material detection device containing a thermal conductivity sensor and a battery are arranged in the detection housing, and the upper surface of the detection housing is It is provided with a display, a measured gas inlet, a ground standard atmosphere inlet, a display backlight switch and a plurality of buttons, an audible and visual alarm is arranged on the front end of the detection housing, and a mobile alarm is arranged on the upper end of the detection housing. cover plate. The above-mentioned technical solution is small in size, light in weight, easy to operate, easy to carry, and can be displayed visually, which helps to improve the reliability of gas detection.

Description

Mine gas detection device

technical field

The utility model relates to the technical field of gas detection, in particular to a gas detection device for mines.

Background technique

In my country's coal mine safety accidents, the number of casualties caused by gas explosion accounts for more than 50% of the number of casualties in all major accidents. In order to effectively detect the concentration of underground gas, it is necessary to set up instruments and equipment that can detect the concentration of gas in real time online. Coal mine gas detection instruments mainly include carrier catalytic type, optical interference type, thermal conductivity type, gas sensitive semiconductor type and infrared absorption type detection devices according to the detection principle. Among them, the infrared absorption gas detection instrument can measure the concentration of various gases, and has the advantages of wide measurement range, good selectivity, no poisoning, long service life, low power consumption, easy operation and maintenance, and online real-time monitoring and many other advantages. However, the existing infrared gas detection devices used on the ground have defects and deficiencies such as large volume, complicated equipment, high price, optical system and circuit structure not suitable for downhole use, etc. to varying degrees. Therefore, it is of great significance to develop an infrared gas detection device that is small in size, simple in structure, low in price and suitable for downhole use.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a mine gas gas detector with reasonable structure design, simple structure, small volume, convenient use, high sensitivity, low manufacturing cost, strong reliability and accurate detection of substances. detection device.

In order to achieve the above purpose, the utility model provides the following technical solutions: a mine gas detection device, including a detection housing in a rectangular structure, the detection housing is provided with a material detection device containing a thermal conductivity sensor and a battery, The upper surface of the detection housing is provided with a display, a measured gas inlet, a ground standard atmosphere inlet, a display backlight switch and a plurality of buttons, and an audible and visual alarm is arranged on the front end of the detection housing. A movable cover is provided on the upper end surface of the housing.

By adopting the above technical scheme, the utility model has the advantages of small size, light weight, convenient operation, portability, and visual display, which helps to improve the reliability of gas detection.

The utility model is further configured as follows: the substance detection device includes a first thermal conductivity sensor, a second thermal conductivity sensor, a signal processing module and a microprocessor, and the outer end of the first thermal conductivity sensor is connected to the inlet of the gas to be measured. The inner end is connected, the inner end of the first thermal conductivity sensor is connected to the signal processing module, the outer end of the second thermal conductivity sensor is connected to the inner end of the ground standard atmosphere inlet, and the inner end of the second thermal conductivity sensor is connected to the signal processing module. The signal processing module is connected with the microprocessor.

The utility model is further configured as follows: both the display and the sound and light alarm are connected to the microprocessor, and the microprocessor is also connected to a power detector and a wireless module for data output.

The utility model is further set as: the buttons include a left button, a right button, a save button and a power button, and the inner ends of the left button, the right button, the save button and the power button are respectively connected to the microprocessor .

The utility model is further set as: the left edge of the upper surface of the detection housing is integrally provided with a raised left rib, the front edge of the upper surface of the detection housing is integrally provided with a front rib, and the upper surface of the detection housing is integrally provided with a raised left rib. The rear edge is integrally provided with a rear rib, and the inner wall surfaces of the front rib and the rear rib are provided with an integrated cover plate guide groove, and the moving cover plate moves left and right along the cover plate guide groove.

The utility model has the advantages that: compared with the prior art, the structure of the utility model is more reasonable, and the measured gas and the standard atmosphere are respectively input to two independent heat conduction type through the measured gas inlet and the ground standard atmosphere inlet. In the air chamber of the sensor, the data processed by the signal processing module is input into the microcontroller and displayed in real time through the liquid crystal display. At the same time, it is transmitted to the existing computer or mobile phone through the wireless module. When the gas concentration exceeds a certain value, the sound and light alarm Alarm work. Reasonable structural design, simple structure, small size, high sensitivity, low manufacturing cost, accurate detection of substances, light weight, convenient operation, easy to carry, strong scalability, strong real-time performance, reliable processed data, and intuitive image It is shown that it is helpful to improve the detection reliability of methane gas.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the description.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a functional block diagram of an embodiment of the utility model.

detailed description

Referring to Fig. 1 and Fig. 2, a mine gas detection device disclosed in the utility model includes a detection housing 1 in a rectangular structure, and a substance detection device including a thermal conductivity sensor and a battery are arranged in the detection housing 1 2. The upper surface of the detection housing 1 is provided with a display 3, a measured gas inlet 11, a ground standard atmosphere inlet 12, a display backlight switch 4 and a plurality of buttons, and the front end of the detection housing 1 is provided with For the sound and light alarm 5, a movable cover plate 6 is arranged on the upper end surface of the detection housing 1 .

Preferably, the substance detection device and the detection housing 1 are connected and fixed by existing screws, and the display 3 is embedded in the display installation hole of the detection housing 1, and is connected and fixed with existing screws or glue; The button and the detection housing 1 are connected and fixed by existing screws or glue; the acousto-optic alarm 5 and the detection housing 1 are connected and fixed by existing screws.

The substance detection device includes a first thermal conductivity sensor 7, a second thermal conductivity sensor 8, a signal processing module 9 and a microprocessor 10, and the outer end of the first thermal conductivity sensor 7 is connected to the measured gas inlet 11. The inner end of the first thermal conductivity sensor 7 is connected to the signal processing module 9, the outer end of the second thermal conductivity sensor 8 is connected to the inner end of the ground standard atmosphere inlet 12, and the inner end of the second thermal conductivity sensor 8 is connected to the signal processing module. The module 9 is connected, and the signal processing module 9 is connected with the microprocessor 10 . Preferably, the components are connected through existing wires.

The first thermal conductivity sensor 7 and the second thermal conductivity sensor 8 are both thermal conductivity gas sensors, and the thermal conductivity gas sensor belongs to an electrical gas sensor, which can sense a certain gas and its concentration in the environment, and it can The information related to the gas type and concentration is converted into an electrical signal, so that detection, monitoring, analysis, and alarm can be carried out. The thermal conductivity gas sensor is the earliest gas sensor used for gas detection, and has the following advantages: 1. The detection range is large, and the highest detection concentration can reach 100%. 2. The working stability is good, the service life is long, there is no problem of catalyst aging, and it has high stability and reliability. 3. With "broad spectrum", it can detect almost all gases, both flammable gases and inert gases, and can realize the detection of gas concentration in the presence or absence of oxygen in the measured environment . 4. The detection device is simple in structure, cheap in price and convenient in use and maintenance. These excellent characteristics are not available in many gas sensors.

In order to make the structure of the present utility model more reasonable, as preferred, the display 3 and the sound and light alarm 5 described in the present embodiment are all connected to the microprocessor 10, and the power detector 13 and the power detector 13 are also connected to the microprocessor 10. Wireless module 14 for data output. The components are connected through existing wires.

Described button comprises turning left key 15, turning right key 16, saving key 17 and power key 18, and described left turning key 15, turning right key 16, saving key 17 and power key 18 inner ends are connected with microprocessor 10 respectively. connect. Preferably, the left scroll key 15, the right scroll key 16, the save key 17 and the power key 18 are all fluorescent silicone keys.

The left edge position of the upper surface of the detection housing 1 is integrally provided with a raised left rib 19, the front edge position of the upper surface of the detection housing 1 is integrally provided with a front rib 110, and the position of the rear edge of the upper surface of the detection housing 1 is A rear wall 111 is integrally provided, and the inner wall surfaces of the front wall 110 and the rear wall 111 are provided with integrated cover guide grooves, and the movable cover 6 moves left and right along the cover guide grooves. A removable cover is used to effectively protect the keys and LCD screen of the display.

The display 3 described in this embodiment is a liquid crystal display, and the battery 2 is an existing lithium polymer battery, and the battery 2 supplies power for the whole device, and adopts a rechargeable battery, which can work with a place without a power socket, and can be used in a non-operating 10 After 10 minutes, the power will be turned off automatically. The measured gas inlet 11 receives the test gas; the ground standard atmosphere inlet 12 receives the standard atmosphere; the display backlight switch 4 can realize the opening and closing of the backlight of the liquid crystal display; with its own backlight, the display can be seen clearly in weak light. The display content is convenient for observation and recording. There is a power display icon in the upper left corner, and the power status can be checked in real time. The left key 15 and the right key 16 can check the data forward or backward; the save key 17 saves the current data; the power key 18 short presses the opening device, and long presses the closing device; the signal processing module 9, the microprocessor 10 and the The wireless modules 14 are all existing products and can be purchased directly; wireless data transmission is realized with existing computers, mobile phones and other equipment through the wireless module 14 . Display 3 can display data and display power status in the upper right corner.

In actual application, the workflow is as follows:

(1) Receive the measured gas through the measured gas inlet, the standard atmosphere inlet receives the ground standard atmosphere, press the power button to open the device of the utility model, and wait for the introduction of the test gas. Once the introduction is completed, the utility model automatically performs data processing and will Results are shown numerically on the display. Press the save button to save the data;

(2) Transmit the real-time gas concentration data to the computer or mobile phone through the wireless module for real-time monitoring;

(3) When the gas concentration exceeds the set value, the sound and light alarm will work to remind the on-site staff;

(4) After several times of processing, you can press the left and right scroll keys to see the gas concentration obtained several times before and after the processing; there is a power indicator icon in the upper right corner of the display, which displays the power status in real time; if the power is insufficient, you can charge it to ensure that the device is in normal working condition.

The utility model takes the microprocessor as the control core, the internal circuit is highly integrated, the volume is greatly reduced, and the utility model is convenient for the operator to carry. And it has its own battery and LCD backlight design, which expands its application occasions. Automatic processing and simple button design, low operating threshold, greatly improve the operability of the device.

The measured gas and the standard atmosphere are respectively input into two independent gas chambers containing thermal conductivity sensors through the measured gas inlet and the ground standard atmosphere inlet, and the data processed by the signal processing module are input to the microcontroller and then passed through the liquid crystal display Real-time display, and at the same time transmitted to the existing computer or mobile phone through the wireless module, when the gas concentration exceeds a certain value, the sound and light alarm will alarm. Reasonable structural design, simple structure, small size, high sensitivity, low manufacturing cost, accurate detection of substances, light weight, convenient operation, easy to carry, strong scalability, strong real-time performance, reliable processed data, and intuitive image It is shown that it is helpful to improve the detection reliability of methane gas.

The specific description of the utility model in the foregoing embodiments is only used to further illustrate the utility model, and cannot be interpreted as limiting the protection scope of the utility model. Technical engineers in the field make some non-essential modifications to the utility model according to the content of the utility model Improvements and adjustments all fall within the protection scope of the present utility model.

Claims (5)

1. a kind of Mine Gas detection means, including detection housing (1) in rectangular configuration, the detection housing (1) is interior It is provided with the substance detecting apparatus containing thermal conductivity sensor and battery (2), it is characterised in that：It is described to detect the upper of housing (1) Display (3), tested gas access (11), ground standard atmospheric connection (12), display backlight switch (4) are provided with surface With multiple buttons, audible-visual annunciator (5) is provided with the front end face of the detection housing (1), the upper end of the detection housing (1) Movable cover plate (6) is provided with face.

A kind of 2. Mine Gas detection means according to claim 1, it is characterised in that：The substance detecting apparatus Including the first thermal conductivity sensor (7), the second thermal conductivity sensor (8), signal processing module (9) and microprocessor (10), institute State that the first thermal conductivity sensor (7) outer end and tested gas access (11) are inner be connected, the first thermal conductivity sensor (7) it is inner and Signal processing module (9) is connected, and the second thermal conductivity sensor (8) outer end is connected with ground standard atmospheric connection (12) the inner, the Two thermal conductivity sensors (8) the inner is connected with signal processing module (9), the signal processing module (9) and microprocessor (10) Connection.

A kind of 3. Mine Gas detection means according to claim 2, it is characterised in that：The display (3) and Audible-visual annunciator (5) is connected with microprocessor (10), be also associated with the microprocessor (10) Power supply detector (13) and Wireless module (14) for data output.

A kind of 4. Mine Gas detection means according to claim 1 or 3, it is characterised in that：The button includes Key (15) is turned on a left side, key (16) is turned on the right side, preserves key (17) and power key (18), and key (15) is turned on the left side, key (16) is turned on the right side, preserves Key (17) and power key (18) the inner are connected with microprocessor (10) respectively.

A kind of 5. Mine Gas detection means according to claim 1, it is characterised in that：The detection housing (1) Upper surface left hand edge position is wholely set the left rib (19) of projection, the upper table forward edge position one of detection housing (1) Preceding rib (110) is provided with, the upper surface back edge position of detection housing (1) has been wholely set rear rib (111), the front Integral cover plate guide groove is provided with the internal face of side (110) and rear rib (111), the movable cover plate (6) is led along cover plate Moved left and right to groove.