CN210514293U - Automatic coal seam gas content measuring device - Google Patents
Automatic coal seam gas content measuring device Download PDFInfo
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- CN210514293U CN210514293U CN201921117831.1U CN201921117831U CN210514293U CN 210514293 U CN210514293 U CN 210514293U CN 201921117831 U CN201921117831 U CN 201921117831U CN 210514293 U CN210514293 U CN 210514293U
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Abstract
The utility model discloses an automatic measuring device for coal seam gas content, which comprises an analytical device cabinet, a central console and the like; the analysis device cabinet comprises a cabinet body and an analysis device, a water tank of the analysis device is arranged at the bottom of the cabinet body, the rest parts of the analysis device are arranged in the cabinet body, the bottoms of 2 measuring tubes extend into the water tank, each laser displacement sensor is arranged at the top of the corresponding measuring tube, and each micro vacuum pump is connected with an air suction port at the top of the corresponding measuring tube; the electric control box of the pulverizer is used for controlling the operation of the superfine grinding pulverizer, the outlet of the superfine grinding pulverizer is connected with the inlet of an impurity filter bottle filled with water, the outlet of the impurity filter bottle is connected with the bottom inlet of one measuring tube, and the bottom inlet of the other measuring tube is connected with a coal sample tank. The utility model discloses a liquid volume change in the laser rangefinder measuring pipe converts into the gas analysis volume through the central control platform, realizes automatic determination and processing through PLC, timely accurate reading and record data to accurate acquireing gas content data.
Description
Technical Field
The utility model belongs to the technical field of the coal seam gas assay, concretely relates to coal seam gas content automatic checkout device.
Background
The gas is one of the main hidden dangers threatening the safety production of the coal mine at present, the coal seam gas content is used as the original data of the coal seam and is the basic data established by a plurality of gas disaster evaluations and gas disaster prevention and control technologies and measures, and the accuracy of the coal seam gas content determination directly determines the accuracy of the mine gas disaster evaluation and the effectiveness of the gas disaster prevention and control.
At present, the gas content measuring device adopted in China generally has the defects of unstable structure, low automation degree, large data reading error and the like, and is far from the advocated rapidness and accuracy.
In order to improve the degree of automation of a gas content measuring device, a plurality of gas content automatic measuring devices are gradually reduced, the problem that the gas content measurement needs to be automatically and mainly solved is that automatic measurement of analyzed gas quantity replaces manual reading and data automatic uploading replaces manual input, and three methods are generally adopted at present aiming at the problem: firstly, the water displacement is converted into the water displacement volume finally by using an electronic balance; secondly, the gas flowmeter measures the analytic gas; thirdly, the liquid level is measured by electrifying resistance, and the volume of water to be drained is measured. However, the above three methods are still insufficient in stability and accuracy, and are prone to have the problems of misalignment and inaccurate measurement of small flow.
Therefore, it is urgently needed to establish a set of automatic measuring device for the gas content in the coal seam, and the device has the characteristics of high stability, high integration level, high automation degree, small man-made interference factor, high accuracy, simple operation, convenience in maintenance and the like, and improves the accuracy and the precision of the gas content measurement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome not enough among the above-mentioned prior art, provide a coal seam gas content automatic determination device, its specially adapted modernized laboratory's use, this system can carry out automatic survey to the coal sample, realizes automatic operation, automatic upload record and processing data, and the test overall process digit is visual, and simulation model shows the flow progress. The utility model has the characteristics of the jamming factor is little, the accuracy is high, easy operation, easily observe, be convenient for maintain etc, and its structural design is simple, reasonable in design has reduced the survey cost, is applicable to all kinds of engineering scene and laboratories, and the practicality is strong, excellent in use effect, convenient to popularize and use.
The utility model discloses a following technical scheme realizes:
an automatic measuring device for coal bed gas content comprises an analytical device cabinet, a crushing system and a central console; wherein the content of the first and second substances,
the analysis device cabinet comprises a cabinet body and an analysis device, wherein the analysis device comprises 2 laser displacement sensors, 2 measuring tubes, a water tank and 2 micro vacuum pumps;
the crushing system comprises a superfine grinding crusher, an impurity filtering bottle and a crusher electric control box;
the water tank of the analysis device is arranged at the bottom of the cabinet body, the rest parts of the analysis device are arranged in the cabinet body, the bottoms of the 2 measuring tubes respectively extend into the water tank, each laser displacement sensor is arranged at the top of the corresponding measuring tube, and each micro vacuum pump is connected with an air suction port at the top of the corresponding measuring tube;
the electric control box of the pulverizer is used for controlling the superfine grinding pulverizer to work, the outlet of the superfine grinding pulverizer is connected with the inlet of an impurity filter flask filled with water, the outlet of the impurity filter flask is connected with the bottom inlet of one measuring tube, and the bottom inlet of the other measuring tube is connected with a coal sample tank;
2 laser displacement sensors, 2 micro vacuum pumps and the electric control box of the pulverizer are all connected with a central control console.
The utility model discloses further improvement lies in, and the analytical equipment cabinet is still including setting up at internal temperature sensor of cabinet and atmospheric pressure sensor, and its output is connected with the central control platform respectively.
The present invention is further improved in that the resolver further comprises a floating piece provided in each measuring tube.
The utility model discloses a further improvement lies in, floats the piece and adopts corrosion-resistant reflection of light to float the piece.
The utility model discloses further improvement lies in, rubbing crusher electronic control box hanging is installed in superfine grinding rubbing crusher top.
The utility model discloses further improvement lies in, buret adopts glass buret.
The utility model discloses further improvement lies in, all is provided with the scale on the buret.
The utility model is further improved in that the central console comprises a PLC control system, a central processing unit, a simulation test flow model and a touch liquid crystal display screen, wherein,
the PLC control system is used for acquiring sensor data and transmitting the sensor data to the CPU module, controlling the starting and stopping of the exhaust pump and the pulverizer through program calculation, and transmitting required data to the central processing unit through RS485 communication;
the central processing unit is used for performing integrated calculation and processing on data and outputting a signal to the PLC so as to control the start and stop of the equipment;
the simulation test flow model is used for displaying the experimental flow and the progress, realizing the visualization of the experimental process, and observing that the simulation measuring tube descends, the laser micrometer flickers and the crusher rotates from the display screen;
the touch liquid crystal display screen is used for inputting other data and observing each data and image through manual touch operation; signals collected by each sensor are transmitted with the PLC through RS485 communication, and the central processing unit is used for transmitting data with the PLC through RS485 communication, automatically inputting data and starting and stopping actions of equipment; the central processing unit adopts a touch liquid crystal display screen to realize data input and image and data monitoring.
Compared with the prior art, the utility model discloses following profitable technological effect has:
1. the utility model discloses the novelty provides and carries out the volume measurement of gas through laser rangefinder cooperation buret according to inversion graduated flask method, increases the research of the method of gas volume measurement, provides a new technical support for various gas volume measurements.
2. The utility model discloses fully consider the artifical multiple error factor of bringing of controlling, through automatic measurement, the accurate coal sample release gas content that detects.
3. The utility model discloses with the control of the complete equipment of assay and the touch-sensitive screen that shows an integrated central control platform, improved experimental facilities's integrated level.
4. The utility model discloses stable in structure, security are high, and simple structure, equipment are fixed and are used in the laboratory, have guaranteed the environmental stability among the laboratory survey process.
To sum up, the utility model discloses a liquid volume change in the laser rangefinder measuring tube converts into the analytic volume of gas through the central control platform, realizes automatic determination and processing through PLC, and timely accurate reading and record data reduce the error effectively to accurate acquireing gas content data, the test overall process digit is visual, and simulation model shows the flow progress.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a laser displacement sensor monitoring;
fig. 3 is a schematic diagram of PLC control.
Description of reference numerals:
1, a cabinet body; 2-laser displacement sensor; 3-burette; 4-corrosion-resistant reflective floating sheet; 6-temperature sensor; 7-atmospheric pressure sensor; 8-impurity filtering bottle; 9-superfine grinding pulverizer; 10-electric control box of crusher; 11-center console; 12-a water tank; 2-1 — a first laser displacement sensor; 2-a second laser displacement sensor; 3-1 — a first burette; 3-2 — a second burette; 4-1-a first floating sheet; 4-2-second floating sheet; 5-1-a first micro vacuum pump; 5-2-second micro vacuum pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, the utility model provides an automatic measuring device for coal bed gas content, which comprises an analysis device cabinet, a crushing system and a central console 11. The analysis device cabinet comprises a cabinet body 1, a temperature sensor 6, an atmospheric pressure sensor 7 and corresponding supports. The analysis device includes: 2 laser displacement sensors 2, 2 burettes 3, a water tank 12, 2 floating sheets 4 and 2 micro vacuum pumps. The pulverizing system includes: a superfine grinding crusher 9, an impurity filtering bottle 8 and a crusher electric control box 10; the central console 11 comprises a PLC control system, a central processing unit, a simulation test flow model and a touch liquid crystal display screen. The laser displacement sensor 2 is connected with the corresponding burette 3 and fixed as an integrated closed device, the air tightness of the device is ensured, and the laser displacement sensor 2 is arranged at the top of the burette 3; a corrosion-resistant reflective floating sheet 4 with the diameter smaller than that of the measuring tube by 1mm is arranged in the measuring tube 3; the electric cabinet 10 of the grinder is hung and installed above the superfine grinding grinder 9; the center console 11 is installed near the cabinet 1.
As shown in fig. 1, 2 burettes 3 are respectively a first burette 3-1 and a second burette 3-2, 2 floating sheets 4 are respectively a first floating sheet 4-1 and a second floating sheet 4-2, 2 micro vacuum pumps are respectively a first micro vacuum pump 5-1 and a second micro vacuum pump 5-2, an air inlet of the first burette 3-1 is connected with a coal sample tank, and an air extraction opening of the first burette 3-1 is connected with the first micro vacuum pump 5-1; an air inlet of a second burette 3-2 is connected with an impurity filtering bottle 8, the impurity filtering bottle 8 is connected with an ultrafine grinding pulverizer 9, and an air exhaust port of the second burette 3-2 is connected with a second micro vacuum pump 5-2; the above connections all adopt corrosion-resistant rubber tubes.
As shown in figure 1, the utility model discloses a laser displacement sensor 2, micro vacuum pump 5, temperature sensor 6, atmospheric pressure sensor 7 and rubbing crusher electronic control box 10 all adopt RS485 and are connected with central control platform 11.
As shown in figure 1, the content of the coal sample atmospheric desorption gas is tested by a first laser displacement sensor 2-1, a first burette 3-1, a first micro vacuum pump 5-1, a temperature sensor 6, an atmospheric pressure sensor 7, a central control console 11 and a coal sample tank part distribution sleeve.
As shown in figure 1, the content of the crushed and desorbed gas of the coal sample is tested by matching a second laser displacement sensor 2-2, a second burette 3-2, an impurity filter bottle 8, an ultra-fine grinding crusher 9, a second micro vacuum pump 5-2, a temperature sensor 6, an atmospheric pressure sensor 7 and a central console 11.
In this embodiment, the coal sample normal pressure desorption gas content and the crushing desorption gas content are controlled and operated by the central control console through the PLC, so that the automation of the experiment process is realized, signals of all the sensors are collected to the central control console, and the final data are obtained through the calculation of the central control console. The test data is displayed on a touch display screen of the central console 11 in real time, the whole test process is digital and visual, and the simulation model displays the progress of the process. The central console 11 includes a PLC controller, a central processing unit, automatic data processing software, a simulation test flow model, and a touch liquid crystal display. And each sensor is connected with the PLC by adopting RS485 to realize data communication and control, and data is processed by software to obtain a result. Automatic data processing software, in a normal pressure desorption experiment interface: clicking 'experiment preparation', starting the micro vacuum pump 5-1 through the central console 11 to enable the liquid in the burette 3-1 to automatically rise to 0ml scale, and stopping the pump; clicking 'experiment start', opening a coal sample tank, starting a gas analysis quantity testing process, monitoring by the laser displacement sensor 2-1 in real time, and displaying data on a touch liquid crystal display screen 11 of a central console in real time; and uploading data through each sensor, and automatically calculating the gas content of each part by automatic data processing software and recording the data. Automatic data processing software, in the crushing desorption experiment interface: clicking 'experiment preparation', starting the micro vacuum pump 5-2 through the central console 11 to enable the liquid in the burette 3-2 to automatically rise to 0ml scale, and stopping the pump; clicking 'experiment start', outputting a signal to a crusher electric cabinet 10 by a central console 11 to start a superfine grinding crusher 9, setting crushing time in software, and automatically stopping after the crushing time is up; in the process, the test data of the laser displacement sensor 2-2 and the crushing time are displayed on a central console touch control liquid crystal display screen (11) in real time; and uploading data through each sensor, and automatically calculating the gas content of each part by automatic data processing software and recording the data.
The touch display screen of the central console is divided into three areas: the experimental process simulation display area, the experimental operation control area and the experimental data display area. The experimental process simulation display area is used for displaying each link process simulation of the experimental process so as to facilitate the experimenter to master the experimental progress; the experiment operation control area is an operation touch interface of an experiment and relates to touch keys such as experiment preparation, experiment starting, crushing time setting, crushing analysis preparation, crushing analysis starting, data output and the like; the experimental data display area relates to the real-time display of data such as analytic volume, temperature, atmospheric pressure, crushing time and the like in the experimental process.
In the embodiment, the manual reading of the measuring tube is replaced by the laser liquid level measurement, and the laser of the laser displacement sensor 2 at the top of the measuring tube irradiates the luminous floating sheet 4 on the liquid level to accurately measure the liquid level change.
In the embodiment, the crushing time of the superfine grinding crusher 9 is set in a central console, the crusher is started to operate on a touch liquid crystal display screen 11 of the central console, the countdown and the analyzed gas content are displayed on the touch liquid crystal display screen 11, the crusher is automatically stopped by a crusher electronic control box 10 after the set time is up, and long and short glass gas pipes arranged in an impurity filter bottle 8 connected with the crusher penetrate out and expose out of a bottle stopper; the built-in liquid is pure water which is lower than the short pipe and higher than the long pipe and is used for filtering gas impurities except gas.
In this embodiment, the temperature sensor 5 and the pressure sensor 6 upload temperature and pressure data of the environment during the test in real time, and calculate an average value during the test as an environmental parameter of the test.
In this embodiment, the central console 11 includes a PLC control system, a central processing unit, a simulation test flow model and a touch liquid crystal display, wherein the PLC control system is used for collecting sensor data and transmitting the sensor data to the CPU module, calculating through a program (the programs of the present invention are all existing programs), controlling the start and stop of the exhaust pump and the pulverizer, and transmitting required data to the central processing unit through RS485 communication; the central processing unit is used for performing integrated calculation and processing on data and outputting a signal to the PLC so as to control the start and stop of the equipment; the simulation test flow model is used for displaying the experimental flow and the progress, realizing the visualization of the experimental process, and observing that the simulation measuring tube descends, the laser micrometer flickers and the crusher rotates from the display screen; the touch liquid crystal display screen is used for inputting other data and observing each data and image through manual touch operation; signals collected by each sensor are transmitted with the PLC through RS485 communication, and the central processing unit is used for automatically inputting data and starting and stopping actions of equipment through data transmission of the RS485 communication and the PLC; the central processing unit adopts a touch liquid crystal display screen to carry out data input and image and data monitoring.
The utility model discloses a theory of operation divide into coal seam gas content for this survey device:
a gas loss amount W1, an atmospheric gas desorption amount W2, a pulverized gas desorption amount W3 and an atmospheric residual amount Wc.
When the coal core drilling machine works, a core drilling hole is constructed in a coal seam, a coal core is taken out from the deep part of the coal seam by using an underground core taking system and is sealed in a coal sample cylinder in time; underground coal sample gas desorption speed determination and loss time recordingUsing the formula atiCalculating the gas loss W1; carrying the coal sample cylinder filled with the coal sample to a laboratory for normal pressure desorption, measuring the gas quantity W21 released from the coal sample cylinder, and calculating the gas desorption quantity W2 of the coal core with the gas desorption quantity W22 measured underground; weighing the coal sample, weighing the secondary coal sample, carrying out normal-pressure crushing desorption, and calculating the crushed gas desorption amount W3 according to the secondary coal sample weight; the desorbable gas content Wm is: w1+ W2+ W3. And calculating the constant pressure residual quantity Wc by using the Langmuir formula to obtain the coal bed gas content W which is Wm + Wc. See, e.g., chinese patent application, publication No. CN 101551377A.
The utility model discloses the concrete operation process who carries out coal sample gas assay does:
① carrying the coal sample cylinder containing the coal sample to a laboratory for normal pressure desorption, starting a central control table ②, connecting a measuring tube 2-1 ③ with the coal sample tank, clicking on 'experiment preparation' on a central control table normal pressure desorption experiment interface, automatically raising the liquid in the first measuring tube 3-1 to 0ml scale, entering normal pressure desorption time by the central control table, clicking on 'experiment start', slowly opening a coal sample tank valve, after the time is over, automatically acquiring experiment data ④ by the central control table, entering underground desorption data, coal sample weight and coal sample moisture (if sampling in a slag mode) ⑤ on the central control table, entering crushed coal sample weight and crushed desorption time on the central control table, clicking on '865 crushing analysis preparation', automatically raising the liquid in the second measuring tube 3-2 to 0ml scale, placing the weighed coal sample into a material bowl, clicking on 'crushing analysis start', automatically starting the ultrafine crushing crusher 9, after the time is over, automatically stopping the ultrafine crusher 9, automatically pouring out the desorption data to 0ml scale, automatically discharging weighed coal sample into the material bowl, automatically wiping the crushed coal sample with the crushed coal sample in a central control table for dedusting, automatically wiping the crushed coal sample with the average crushed coal sample volume difference of 3630W, automatically wiping off the crushed coal sample 3630, and automatically wiping off the average crushed cotton sample 3635, and automatically wiping the crushed cotton sample after the crushed cotton sample 369 is over.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent structure transform that the above embodiment was done the utility model discloses technical scheme's within the scope of protection.
Claims (8)
1. An automatic measuring device for coal bed gas content is characterized by comprising an analytical device cabinet, a crushing system and a central console (11); wherein the content of the first and second substances,
the analysis device cabinet comprises a cabinet body (1) and an analysis device, wherein the analysis device comprises 2 laser displacement sensors (2), 2 measuring tubes (3), a water tank (12) and 2 micro vacuum pumps;
the crushing system comprises a superfine grinding crusher (9), an impurity filtering bottle (8) and a crusher electric control box (10);
the water tank (12) of the analysis device is arranged at the bottom of the cabinet body (1), the rest parts of the analysis device are arranged in the cabinet body (1), the bottoms of 2 measuring tubes (3) respectively extend into the water tank (12), each laser displacement sensor (2) is arranged at the top of the corresponding measuring tube (3), and each micro vacuum pump is connected with an air extraction opening at the top of the corresponding measuring tube (3);
the electric control box (10) of the pulverizer is used for controlling the operation of the superfine grinding pulverizer (9), the outlet of the superfine grinding pulverizer (9) is connected with the inlet of an impurity filtering bottle (8) filled with water, the outlet of the impurity filtering bottle (8) is connected with the bottom inlet of one measuring tube (3), and the bottom inlet of the other measuring tube (3) is connected with a coal sample tank;
2 laser displacement sensors (2), 2 micro vacuum pumps and a crusher electric control box (10) are all connected with a central control console (11).
2. The automatic coal seam gas content measuring device according to claim 1, wherein the analyzer cabinet further comprises a temperature sensor (6) and an atmospheric pressure sensor (7) arranged in the cabinet body (1), and output ends of the temperature sensor and the atmospheric pressure sensor are respectively connected with the central control console (11).
3. The automatic coal seam gas content measuring device according to claim 1, wherein the analyzer further comprises a floating plate (4) disposed in each measuring tube (3).
4. The automatic coal seam gas content measuring device according to claim 3, wherein the floating sheet (4) is a corrosion-resistant reflective floating sheet.
5. The automatic coal seam gas content measuring device according to claim 1, wherein the pulverizer electric cabinet (10) is wall-mounted above the superfine grinding pulverizer (9).
6. The device for automatically measuring the gas content in the coal seam according to claim 1, wherein the measuring tube (3) is a glass measuring tube.
7. An automatic coal seam gas content measuring device according to claim 1 or 6, characterized in that the measuring tubes (3) are provided with scales.
8. The automatic measuring device for coal bed gas content according to claim 1, wherein the central console (11) comprises a PLC control system, a central processing unit, a simulation test flow model and a touch liquid crystal display screen, wherein,
the PLC control system is used for acquiring sensor data and transmitting the sensor data to the CPU module, controlling the starting and stopping of the exhaust pump and the pulverizer through program calculation, and transmitting required data to the central processing unit through RS485 communication;
the central processing unit is used for performing integrated calculation and processing on data and outputting a signal to the PLC so as to control the start and stop of the equipment;
the simulation test flow model is used for displaying the experimental flow and the progress, realizing the visualization of the experimental process, and observing that the simulation measuring tube descends, the laser micrometer flickers and the crusher rotates from the display screen;
the touch liquid crystal display screen is used for manual touch operation input data and observation of each data and image; signals collected by each sensor are transmitted with the PLC through RS485 communication, and the central processing unit is used for transmitting data with the PLC through RS485 communication, automatically inputting data and starting and stopping actions of equipment; the central processing unit adopts a touch liquid crystal display screen to realize data input and image and data monitoring.
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| CN201921117831.1U CN210514293U (en) | 2019-07-16 | 2019-07-16 | Automatic coal seam gas content measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579316A (en) * | 2020-05-15 | 2020-08-25 | 中国矿业大学 | Portable sampling instrument for mine gas sampling and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579316A (en) * | 2020-05-15 | 2020-08-25 | 中国矿业大学 | Portable sampling instrument for mine gas sampling and control method |
| CN111579316B (en) * | 2020-05-15 | 2021-01-29 | 中国矿业大学 | Portable sampling instrument for mine gas sampling and control method |
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