CN112881342A

CN112881342A - On-spot coal seam carbon dioxide source identification system

Info

Publication number: CN112881342A
Application number: CN202110032858.6A
Authority: CN
Inventors: 王琼; 许浩; 汤达祯; 辛福东
Original assignee: China University of Geosciences Beijing
Current assignee: China University of Geosciences Beijing
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-06-01
Anticipated expiration: 2041-01-12
Also published as: CN112881342B

Abstract

The on-site coal bed carbon dioxide source identification system comprises a vehicle body, a solid-liquid separation device, a gas-liquid separation device, a carbon dioxide separation device, a spectrum analysis device and a PLC (programmable logic controller), wherein the gas-liquid separation device, the carbon dioxide separation device and the spectrum analysis device are sequentially arranged and fixedly installed on the vehicle body from back to front, the solid-liquid separation device is arranged above the gas-liquid separation device, a discharge port of the solid-liquid separation device is connected with a feed port of the gas-liquid separation device, a gas outlet of the gas-liquid separation device is connected with a gas inlet of the carbon dioxide separation device, a gas outlet of the carbon dioxide separation device is connected with a gas inlet of the spectrum analysis device, and the PLC is respectively in signal connection with the solid-liquid. The invention is convenient to move, can adapt to various terrain environments, can test at any time on site and has accurate test result.

Description

On-spot coal seam carbon dioxide source identification system

Technical Field

The invention relates to the field of coal bed gas testing, in particular to an on-site coal bed carbon dioxide source identification system.

Background

Carbon dioxide is an important associated gas of coal bed gas, and particularly, the concentration of the carbon dioxide in some low-rank coal bed gas reservoirs can exceed 50%. Finding out the source of carbon dioxide in the coal bed gas is beneficial to identifying the cause type of the coal bed gas, and the carbon isotope test is the most convenient, fast and accurate means for identifying the source of the carbon dioxide. Generally, the laboratory test has sparse sampling density and is difficult to test, and the sample is easy to cause carbon isotope fractionation in the transportation process, so that the test result is influenced.

Disclosure of Invention

The invention aims to provide an on-site coal bed carbon dioxide source identification system which is convenient to move, can adapt to various terrain environments, can be tested on site at any time and has accurate test results.

In order to achieve the purpose, the invention adopts the following technical scheme:

the on-site coal bed carbon dioxide source identification system comprises a vehicle body, a solid-liquid separation device, a gas-liquid separation device, a carbon dioxide separation device, a spectrum analysis device and a PLC (programmable logic controller), wherein the gas-liquid separation device, the carbon dioxide separation device and the spectrum analysis device are sequentially arranged and fixedly installed on the vehicle body from back to front, the solid-liquid separation device is arranged above the gas-liquid separation device, a discharge port of the solid-liquid separation device is connected with a feed port of the gas-liquid separation device, a gas outlet of the gas-liquid separation device is connected with a gas inlet of the carbon dioxide separation device, a gas outlet of the carbon dioxide separation device is connected with a gas inlet of the spectrum analysis device, and the PLC is respectively in signal connection with the solid-liquid.

The automobile body includes the vehicle bottom board, and the lateral part is all rotated before the left side limit of vehicle bottom board and lateral part and back lateral part and the right side limit of vehicle bottom board before the lateral part and the back lateral part install with ground roll contact's wheel, the preceding side middle part fixedly connected with of vehicle bottom board be used for with the couple of locomotive connection, gas-liquid separation device, carbon dioxide separator and spectral analysis device arrange fixed mounting in proper order before by the back in the vehicle bottom board upper surface.

The solid-liquid separation device comprises a first cylinder body, a second cylinder body, a first sieve cylinder and a second sieve cylinder, wherein the central lines of the first cylinder body, the second cylinder body, the first sieve cylinder and the second sieve cylinder are superposed and are horizontally arranged along the front-back direction, the front side and the rear side of the first cylinder body, the front side and the rear side of the second cylinder body, the front side and the rear side of the first sieve cylinder and the rear side of the second sieve cylinder are open, a feeding pipe is fixedly connected with the middle part of the upper side wall of the first cylinder body in an integrated manner, the feeding pipe is vertically arranged, a conical cylinder feeding hopper with a thick upper part and a thin lower part is integrally formed at the upper end of the feeding pipe, the lower end of the feeding pipe is communicated with the inside of the first cylinder body, a first ball valve is mounted on the feeding pipe, an extrusion piston is arranged on the rear side part in the first cylinder body in a sliding manner, the excircle of the extrusion piston is in sliding contact with the inner, the three supporting beams are arranged in a circumferential array, the middle part of the rear end face of each supporting beam is fixedly connected with a coaxial supporting column, the three supporting columns are slidably connected with a circular supporting plate parallel to the extrusion piston, three first hydraulic cylinders are fixedly connected between the front side face of the circular supporting plate and the rear side face of the extrusion piston, the rear ends of the cylinders of the three first hydraulic cylinders are hinged on the front side face of the circular supporting plate, the front ends of the piston rods of the three first hydraulic cylinders are fixedly connected on the rear side face of the extrusion piston, the upper side part and the lower side part of the outer circle of the rear end of a first cylinder body are fixedly connected with first vertical supporting plates in an integrated manner, the upper side part of the outer circle of the circular supporting plate is fixedly connected with second vertical supporting plates in an integrated manner, the upper side part of the first vertical supporting plate corresponds to the upper side of the, a second hydraulic cylinder is fixedly connected between the first vertical support plate at the upper side and the second vertical support plate at the upper side and between the first vertical support plate at the lower side and the second vertical support plate at the lower side, the front ends of the cylinder bodies of the two second hydraulic cylinders are respectively hinged on the rear side surfaces of the two corresponding first vertical support plates, the rear ends of the piston rods of the two second hydraulic cylinders are respectively fixedly connected on the front side surfaces of the two corresponding second vertical support plates, a first flange plate is integrally formed on the excircle of the front end of the first cylinder body, a second flange plate is integrally formed on the rear end of the second cylinder body, the first flange plate and the second flange plate are fixedly connected through a plurality of fastening bolts arranged in a circumferential array, the outer diameter of the second cylinder body is smaller than that of the second flange plate, the inner diameter of the second cylinder body is larger than that of the second flange plate, an annular connecting plate is integrally formed on the inner circle at the front end of the second cylinder body, a connecting cylinder concentric with the second cylinder body is fixedly connected on, the first screen cylinder is concentrically arranged in the second cylinder body, the inner diameter of the first screen cylinder, the inner diameter of the annular connecting plate and the inner diameter of the second flange plate are the same, the outer diameter of the first screen cylinder is smaller than the inner diameter of the second cylinder body, the front end and the rear end of the first screen cylinder are fixedly connected to the second flange plate and the annular connecting plate respectively, the second screen cylinder is concentrically and rotatably arranged in the first screen cylinder, the outer diameter of the second screen cylinder is the same as the inner diameter of the first screen cylinder, the rear end of the second screen cylinder is integrally formed with a hollow rotating shaft, the front end of the second screen cylinder is integrally formed with a stepped rotating shaft which is thin in front and thick in rear, the outer diameter of the hollow rotating shaft is smaller than the inner diameter of the first cylinder body, the hollow rotating shaft extends backwards to the front side part in the first cylinder body, the hollow rotating shaft is rotatably connected to the front side part in the first cylinder body through the first rolling bearing, the front side part in the first cylinder body is fixedly connected with a bearing limit stop ring, the front end face of the, the interior circumference of bearing limit stop ring is the big conical surface in little back in front, the connecting cylinder is passed forward to the ladder pivot, the thick axle external diameter of rear side of ladder pivot is less than the internal diameter of connecting cylinder, the thick axle of rear side of ladder pivot is rotated through second antifriction bearing and is connected in the connecting cylinder, the front end of connecting cylinder is stretched out to the thin axle of front side of ladder pivot, a plurality of sieve mesh has evenly been seted up respectively on the section of thick bamboo wall of first sieve section of thick bamboo and second sieve section of thick bamboo, the lower lateral wall middle part integrated into one piece fixedly connected with discharging pipe of second barrel, the vertical setting of discharging pipe, install the second ball valve on the discharging pipe, the front end of second barrel is provided with and is used for driving second sieve section of thick bamboo pivoted swing mechanism, the PLC controller respectively with three first hydraulic cylinder and.

Pushing mechanism includes first L type support, third hydraulic cylinder and swing board, the vertical board of first L type support is gone up side and the front end excircle lower side integrated into one piece fixed connection of second barrel, the vertical board lower side of first L type support and the horizontal plate back side integrated into one piece fixed connection of first L type support, the vertical setting of third hydraulic cylinder, third hydraulic cylinder's cylinder body bottom articulates at the horizontal plate upper surface right side portion of first L type support, the length direction of swing board sets up along controlling the direction, the left side fixed connection of swing board is at the thin axle front end middle part in the front side of ladder pivot, the right side portion of swing board is articulated with third hydraulic cylinder's piston rod upper end, PLC controller and third hydraulic cylinder signal connection.

The gas-liquid separation device comprises a storage tank, a slurry pump and a gas pipe, wherein the storage tank is fixedly arranged on the rear side part of the upper surface of a vehicle bottom plate, the lower end of a discharge pipe is fixedly arranged on the rear side part of a top plate of the storage tank and communicated with the inside of the storage tank, the middle part of the top plate of the storage tank is fixedly connected with a third vertical support plate, the lower surface of a horizontal plate of a first L-shaped support is fixedly connected with the upper side edge of the third vertical support plate, the upper part of the rear side of the outer circumference of the storage tank is fixedly connected with a horizontal support plate, the slurry pump is fixedly arranged on the horizontal support plate, the lower part of the rear side of the outer circumference of the storage tank is fixedly connected with a first return pipe, the upper end outlet of the first return pipe is fixedly connected with an inlet of a slurry pump, the outlet of the, the gas transmission pipe sets up along the fore-and-aft direction, and the air inlet end fixed mounting of gas transmission pipe is installed on the gas transmission pipe and is ordered about the first check valve that gas flowed forward backward by, and the outer circumference left side of storage tank is along vertical liquid level observation window that is provided with, PLC controller and slush pump signal connection on the gas transmission pipe.

The carbon dioxide separation device comprises an upper gas storage tank, a lower gas storage tank, a speed reduction motor and a carbon dioxide separation membrane, wherein the bottom of the upper gas storage tank is open, the top of the lower gas storage tank is open, horizontally arranged T-shaped support plates are fixedly connected to the upper parts of the left side and the right side of the outer circumference of the upper gas storage tank, the two T-shaped support plates are identical in structure and symmetrical left and right, two stand columns are fixedly connected to the bottom of each T-shaped support plate, the bottoms of the four stand columns are fixedly connected to a vehicle bottom plate, the lower gas storage tank is arranged right below the upper gas storage tank, lifting plates are fixedly connected to the middle parts of the left side and the right side of the outer circumference of the lower gas storage tank, fourth hydraulic cylinders are fixedly connected between the left T-shaped support plate and the left lifting plate and between the right T-, the speed reducing motor is fixedly arranged on the upper surface of the vehicle bottom plate and is positioned between the material storage tank and the lower gas storage tank, the upper surface of the vehicle bottom plate is fixedly provided with two first vertical supports which are positioned between the speed reducing motor and the lower gas storage tank and are arranged side by side in a bilateral symmetry manner, a first winding roller is rotatably arranged between the upper ends of the two first vertical supports, the upper surface of the vehicle bottom plate is fixedly provided with two second vertical supports which are positioned on the front side of the lower gas storage tank and are arranged side by side in a bilateral symmetry manner, a second winding roller is rotatably arranged between the upper ends of the two second vertical supports, the carbon dioxide separation membrane is horizontally tensioned between the two elastic sealing rings along the front-back direction, the width of the carbon dioxide separation membrane in the left-right direction, the length of the first winding roller, the length of the second winding roller and the outer diameter of the elastic sealing rings are the same, the back, a power shaft of a speed reducing motor is horizontally arranged along the left-right direction, the left end of a central shaft of a first winding roller penetrates through a first vertical support on the left side leftwards and is fixedly provided with a driven belt pulley, the left end of the power shaft of the speed reducing motor is fixedly provided with a driving belt pulley, a transmission belt is sleeved between the driving belt pulley and the driven belt pulley, the rear side part of a top plate of an upper air storage tank is fixedly provided with a first air inlet pipe joint, the air outlet end of an air pipe is fixedly connected with the air inlet end of the first air inlet pipe joint, the inner wall of the top plate of the upper air storage tank is fixedly provided with a temperature sensor and a humidity sensor, the right side part of the upper surface of the top plate of the upper air storage tank is fixedly provided with a second L-shaped support, the lower side edge of a vertical plate of the second L-shaped support is, a water pump is fixedly installed on the upper surface of a horizontal plate of the second L-shaped support, a water inlet of the water pump is connected with an external cooling water source through a water inlet pipe horizontally arranged along the front-back direction, a water outlet of the water pump is fixedly connected with a water injection pipe vertically arranged, the lower end of the water injection pipe is fixedly connected with the middle part of a top plate of the upper air storage tank, a second one-way valve for driving water flow to flow from top to bottom is installed on the water injection pipe, a water injection hole correspondingly communicated with the water injection pipe is formed in the center of the top plate of the upper air storage tank, a spray head vertically and correspondingly communicated with the water injection hole is fixedly installed in the middle part of the inner wall of the top plate of the upper air storage tank, the spray direction of the spray head is downward arranged;

the PLC is respectively in signal connection with the two fourth hydraulic oil cylinders, the speed reducing motor, the temperature sensor, the humidity sensor and the vertical electric heating rods.

The spectrum analysis device comprises a cross-shaped pipe column, a small computer, a movable mirror, a fixed mirror, a light source, a beam splitter, an infrared detector and a detection tube, wherein the cross-shaped pipe column consists of a horizontal pipe and a vertical pipe, the horizontal pipe is horizontally arranged along the front and back direction, the middle part of the horizontal pipe is communicated with the middle part of the vertical pipe and is fixedly connected with the vertical pipe in an integrated forming way, two fourth vertical support plates which are arranged side by side from front to back are fixedly arranged at the front side part of the upper surface of a vehicle bottom plate, the plane where the fourth vertical support plates are arranged is vertically arranged along the left and right direction, the lower part of the front side of the horizontal pipe and the lower part of the rear side of the horizontal pipe are respectively fixedly supported and connected at the upper sides of the two fourth vertical support plates, the small computer is fixedly arranged at the upper parts of the left sides of the two fourth vertical support plates through connecting rods, the fixed mirror is fixedly arranged in the middle of the lower surface of the sealing cover plate and positioned at the top in the vertical pipe, the upper surface of the sealing cover plate is fixedly provided with a fifth vertical support plate, the lower side of the middle part of the water inlet pipe is fixedly supported and connected on the upper side edge of the fifth vertical support plate, the light source is fixedly arranged in the front end of the horizontal pipe, the beam splitter is fixedly arranged in the center of the inside of the cross-shaped pipe column, the plane where the beam splitter is positioned is vertical to the plane where the cross-shaped pipe column is positioned, the front part of the beam splitter is low and the rear part of the beam splitter is high-inclined, the included angle between the beam splitter and the horizontal plane is 45 degrees, the infrared detector is fixedly arranged at the lower end of the vertical pipe, the infrared detector is in signal connection with the small computer through a signal cable, the middle part of the fourth vertical support plate at the rear side is provided, the front end of the detection tube passes the outer circumference rear side downside of vertical pipe forward and stretches into inside the vertical pipe, the front end fixed connection of detection tube is at vertical pipe front side inner wall downside, the detection tube is located the top of infrared detector, the detection tube stretches into vertical intraduct one section be the hyaline tube, the back end edge integrated into one piece fixedly connected with a plurality of circular arc extension boards of horizontal pipe, the centre of a circle line of each circular arc extension board all coincides with the central line of horizontal pipe, the rear end fixedly connected with tube sheet of each circular arc extension board, fixedly connected with fifth hydraulic cylinder between the leading flank of tube sheet and the trailing flank of moving mirror, the PLC controller is connected with fifth hydraulic cylinder and small-size computer signal.

Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and specifically, the working principle and the process of the invention are as follows: after the headstock is connected with the hook, the vehicle body is pulled to a coal bed drilling site through the headstock, a certain amount of drilling fluid is taken out from a drilling well, the drilling fluid contains coal cinder and carbon dioxide of the coal bed where the drill bit is located, and initial preparation work is carried out: the piston rods of the two fourth hydraulic oil cylinders are in a contraction state, the lower end of the upper gas storage tank is in butt joint with the upper end of the lower gas storage tank, the carbon dioxide separation membrane positioned between the two elastic sealing rings is in a normal use state, namely the section of carbon dioxide separation membrane is intact, if the section of carbon dioxide separation membrane is damaged, the two fourth hydraulic oil cylinders need to be started, the piston rods of the two fourth hydraulic oil cylinders synchronously extend downwards to lower the lower gas storage tank, the two elastic sealing rings separate and release the carbon dioxide separation membrane, the speed reducing motor is started to drive the first winding roller to rotate, the first winding roller winds and stores the section of damaged carbon dioxide separation membrane, meanwhile, a new section of carbon dioxide separation membrane is unwound from the second winding roller and horizontally tensioned and laid between the two elastic sealing rings, and then the piston rods of the two fourth hydraulic oil cylinders are upwards contracted and, lifting the lower gas storage tank to the initial position, and clamping a new section of carbon dioxide separation membrane by the two elastic sealing rings; after the initial preparation work is finished, opening the first ball valve, closing the second ball valve and the third ball valve, filling the drilling fluid into the conical barrel feed hopper, allowing the drilling fluid to enter the first barrel and the second barrel through the feed pipe, stopping filling the drilling fluid when the liquid level of the drilling fluid rises to a position adjacent to the first ball valve, closing the first ball valve, opening the second ball valve, controlling three first hydraulic oil cylinders to start simultaneously through the PLC controller, keeping the two second hydraulic oil cylinders still, allowing the piston rods of the three first hydraulic oil cylinders to extend forwards synchronously, allowing the piston rods of the three first hydraulic oil cylinders to push the extrusion piston to slide forwards in the first barrel synchronously, allowing the extrusion piston to compress the inner space of the first barrel, allowing the liquid, gas and partial solid impurities in the drilling fluid to enter the inner bottom of the second barrel after being filtered through the sieve holes of the first sieve barrel and the second sieve barrel, liquid, gas and partial solid impurities enter the storage tank through the discharge pipe, the extrusion piston extrudes all drilling fluid in the first cylinder into the second cylinder, the states of the liquid and the solid impurities in the storage tank are observed through the liquid level observation window, if the solid impurities in the storage tank are more, piston rods of the three first hydraulic cylinders are retracted backwards and reset, the extrusion piston is reset backwards, then a third ball valve is opened, a second ball valve is closed, the slurry pump is started, the liquid and the solid impurities in the storage tank are pumped back into the first cylinder through a first return pipe and a second return pipe, a third hydraulic cylinder is controlled and adjusted through a PLC controller, the piston rod of the third hydraulic cylinder extends out, the piston rod of the third hydraulic cylinder pushes the swing plate to swing up and down, the swing plate drives the second screen cylinder to rotate by a certain angle, and the second screen cylinder is staggered with the first screen cylinder, the area of the sieve pores corresponding to the first sieve cylinder and the second sieve cylinder is reduced, when the slurry pump completely pumps liquid and solid impurities in the storage tank and fills the liquid and the solid impurities into the first cylinder, the slurry pump and the third ball valve are closed, the second ball valve is opened, the three first hydraulic cylinders are controlled to act through PLC control again, piston rods of the three first hydraulic cylinders synchronously extend forwards, the piston rods of the three first hydraulic cylinders synchronously push the extrusion piston forwards to slide forwards in the first cylinder, the extrusion piston compresses the inner space of the first cylinder, so that the liquid, gas and partial solid impurities in the first cylinder enter the inner bottom of the second cylinder after being filtered through the sieve pores of the first sieve cylinder and the second sieve cylinder, the liquid, gas and partial solid impurities enter the storage tank through the discharge pipe, and the condition of the solid impurities in the storage tank is observed through the liquid level observation window simultaneously, if the solid impurities in the storage tank are still more, repeating the operations until the solid impurities in the storage tank basically disappear, if the liquid in the storage tank is less, cleaning the solid impurities in the first cylinder, the second cylinder, the first sieve cylinder and the second sieve cylinder, adding the drilling fluid again, repeating the filtering operation of the drilling fluid, extruding and filtering for multiple times, enabling the liquid and the gas in the drilling fluid to enter the storage tank, enabling the solid impurities in the drilling fluid to be retained in the second sieve cylinder, enabling the gas to enter the upper gas storage tank through the first check valve and the first gas inlet pipe joint through the gas pipe, respectively detecting the temperature and the humidity in the upper gas storage tank through the temperature sensor and the humidity sensor, enabling the PLC to obtain the detection values of the temperature sensor and the humidity sensor and transmit the detection values to the small computer, and enabling the display of the small computer to display the detection values of the temperature sensor and the humidity sensor in real time, the permeability of the carbon dioxide separation membrane is sensitive to temperature and humidity, and can be adjusted by adjusting the temperature and humidity inside the upper gas storage tank, specifically, cooling water from an external cooling water source is pumped into a water injection hole through a water inlet pipe and a water injection pipe by a water pump, the cooling water enters a spray head in the upper gas storage tank through the water injection hole, the spray head sprays the cooling water into the upper gas storage tank in a spray manner, so as to adjust the humidity inside the upper gas storage tank in real time, each vertical electric heating rod is used for heating the upper gas storage tank, the temperature inside the upper gas storage tank is adjusted in real time, carbon dioxide in the upper gas storage tank downwards penetrates through the carbon dioxide separation membrane to be separated from gas, the carbon dioxide downwards enters a lower gas storage tank, the carbon dioxide enters a detection pipe through an exhaust pipe joint, a vent hose and a second gas inlet pipe joint, and a light source is turned, the light source emits a beam of light backwards to the beam splitter, the beam of light is divided into two beams by the beam splitter, wherein 50% of the light is transmitted to the movable mirror and then reflected to the beam splitter, the other 50% of the light is vertically reflected upwards to the fixed mirror and then reflected to the beam splitter, the two beams of light can be combined together to form coherent light with interference light characteristics, when the piston rod of the fifth hydraulic oil cylinder drives the movable mirror to move forwards and backwards until the optical path difference of the two beams of light is even times of half wavelength, the two beams of light can generate constructive interference, the interference light irradiates the rear transparent section of the detection tube downwards, the interference light penetrates through the rear transparent section of the detection tube and carries the carbon isotope value of carbon dioxide in the detection tube to reach the infrared detector, the infrared detector transmits interference light signals to the small computer, the small computer performs Fourier transform processing on the interference light signals to obtain an infrared spectrogram, and the infrared spectrogram is displayed on a display of the small computer, the staff can judge the source of the carbon dioxide by observing the infrared spectrogram.

The solid impurity cleaning step in first barrel, second barrel, first sieve section of thick bamboo and the second sieve section of thick bamboo is: the second ball valve and the third ball valve are closed, the first ball valve is opened, the two second hydraulic cylinders are started, piston rods of the two second hydraulic cylinders are controlled by the PLC to synchronously extend backwards, the piston rods of the two second hydraulic cylinders push the circular support plate to slide backwards along the three support columns, then the circular support plate drives the three first hydraulic cylinders to move backwards together, the three first hydraulic cylinders drive the extrusion piston to move backwards, and the extrusion piston is drawn out from the rear end of the first cylinder body.

The method is operated on the coal bed drilling site, the problems of sparse sampling density in laboratory test and carbon isotope fractionation caused by a sample in the transportation process can be solved, the carbon dioxide of the coal bed where the drill bit is located can be quickly obtained by filtering and separating the drilling fluid, and the carbon dioxide carbon isotope value can be simply, quickly and accurately obtained by adopting the spectrum test, so that the source of the carbon dioxide can be identified.

Drawings

Fig. 1 is an isometric view of the present invention.

Fig. 2 is a left side view of the present invention.

FIG. 3 is a sectional view of the solid-liquid separator of the present invention.

FIG. 4 is a front view of the solid-liquid separation device of the present invention.

Fig. 5 is an exploded view of the solid-liquid separation apparatus of the present invention.

Fig. 6 is a cross-sectional view of a second cylinder of the present invention.

Fig. 7 is a sectional view of the carbon dioxide separation device of the present invention.

Fig. 8 is a sectional view of a spectral analysis apparatus of the present invention.

Fig. 9 is a partially enlarged view of a portion a in fig. 3.

Fig. 10 is a partially enlarged view of fig. 7 at B.

Detailed Description

The embodiments of the present invention are further described below with reference to the drawings.

The direction to the right in fig. 2 is the forward direction, and the direction to the viewer in fig. 2 is the left direction.

As shown in fig. 1-10, an on-site coal bed carbon dioxide source identification system comprises a vehicle body, a solid-liquid separation device, a gas-liquid separation device, a carbon dioxide separation device, a spectrum analysis device and a PLC controller, wherein the gas-liquid separation device, the carbon dioxide separation device and the spectrum analysis device are sequentially arranged and fixedly mounted on the vehicle body from back to front, the solid-liquid separation device is arranged above the gas-liquid separation device, a discharge port of the solid-liquid separation device is connected with a feed port of the gas-liquid separation device, a gas outlet of the gas-liquid separation device is connected with a gas inlet of the carbon dioxide separation device, a gas outlet of the carbon dioxide separation device is connected with a gas inlet of the spectrum analysis device, and the PLC controller is respectively in signal connection with the solid-liquid separation.

The automobile body includes vehicle bottom board 1, and the left side preceding lateral part and the back lateral part of vehicle bottom board 1 and the right side preceding lateral part and the back lateral part of vehicle bottom board 1 all rotate and install wheel 2 with ground roll contact, and the preceding side middle part fixedly connected with of vehicle bottom board 1 is used for the couple 3 of being connected with the locomotive, and gas-liquid separation device, carbon dioxide separator and spectral analysis device arrange fixed mounting in proper order before by the back in the vehicle bottom board 1 upper surface.

Solid-liquid separation equipment includes first barrel 4, second barrel 5, first sieve section of thick bamboo 6 and second sieve section of thick bamboo 7, first barrel 4, second barrel 5, the central line coincidence of first sieve section of thick bamboo 6 and second sieve section of thick bamboo 7 and all along the fore-and-aft direction level setting, front side and rear side of first barrel 4, front side and rear side of second barrel 5, front side and rear side and the rear side of second sieve section of thick bamboo 7 of first sieve section of thick bamboo 6 are all uncovered, the last lateral wall middle part integrated into one piece fixedly connected with inlet pipe 8 of first barrel 4, 8 vertical settings of inlet pipe, the upper end integrated into one piece of inlet pipe 8 has thick circular cone feeder hopper 9 down thin, the lower extreme of inlet pipe 8 and the inside intercommunication of first barrel 4, install first ball valve 10 on the inlet pipe 8, the inside rear lateral part slides and is provided with extrusion piston 11 in the first barrel 4, the excircle of extrusion piston 11 slides and contacts with the interior circle of first barrel 4, the three root canal 12 that the three root canal face integrated into one piece fixedly connected with of the rear end face of first barrel 4 set up along the fore-and- The three supporting beams 12 are arranged in a circumferential array, the middle part of the rear end face of each supporting beam 12 is fixedly connected with a coaxial supporting column 13, the three supporting columns 13 are connected with a circular supporting plate 14 parallel to the extrusion piston 11 in a sliding manner, three first hydraulic cylinders 15 are fixedly connected between the front side face of the circular supporting plate 14 and the rear side face of the extrusion piston 11, the rear ends of the cylinders of the three first hydraulic cylinders 15 are hinged to the front side face of the circular supporting plate 14, the front ends of the piston rods of the three first hydraulic cylinders 15 are fixedly connected to the rear side face of the extrusion piston 11, the upper side part and the lower side part of the outer circle of the rear end of the first cylinder 4 are fixedly connected with first vertical supporting plates 16 in an integrated manner, the upper side part and the lower side part of the circular supporting plate 14 are fixedly connected with second vertical supporting plates 17 in an integrated manner, and the first vertical, the first vertical support plate 16 on the lower side corresponds to the second vertical support plate 17 on the lower side in the front-back direction, a second hydraulic cylinder 18 is fixedly connected between the first vertical support plate 16 on the upper side and the second vertical support plate 17 on the upper side and between the first vertical support plate 16 on the lower side and the second vertical support plate 17 on the lower side, the front ends of the cylinder bodies of the two second hydraulic cylinders 18 are respectively hinged on the back side surfaces of the two corresponding first vertical support plates 16, the rear ends of the piston rods of the two second hydraulic cylinders 18 are respectively fixedly connected on the front side surfaces of the two corresponding second vertical support plates 17, a first flange plate 19 is integrally formed on the excircle of the front end of the first cylinder 4, a second flange plate 20 is integrally formed on the rear end of the second cylinder 5, the first flange plate 19 and the second flange plate 20 are fixedly connected through a plurality of fastening bolts 21 arranged in a circumferential array, and the outer diameter of the second cylinder 5 is smaller than that of the second flange, the inner diameter of the second cylinder 5 is larger than the inner diameter of the second flange plate 20, the inner circle of the front end of the second cylinder 5 is integrally formed with an annular connecting plate 22, the front side of the inner circle of the annular connecting plate 22 is fixedly connected with a connecting cylinder 23 which is concentric with the second cylinder 5, the first screen cylinder 6 is concentrically arranged in the second cylinder 5, the inner diameter of the first screen cylinder 6, the inner diameter of the annular connecting plate 22 and the inner diameter of the second flange plate 20 are the same, the outer diameter of the first screen cylinder 6 is smaller than the inner diameter of the second cylinder 5, the front end and the rear end of the first screen cylinder 6 are respectively fixedly connected on the second flange plate 20 and the annular connecting plate 22, the second screen cylinder 7 is concentrically arranged in the first screen cylinder 6 in a rotating manner, the outer diameter of the second screen cylinder 7 is the same as the inner diameter of the first screen cylinder 6, the rear end of the second screen cylinder 7 is integrally formed with a hollow rotating shaft 24, the front end of the second screen cylinder 7 is integrally formed with a step rotating shaft, the outer diameter of the hollow rotating shaft 24 is smaller than the inner diameter of the first cylinder 4, the hollow rotating shaft 24 extends backwards into the front side part in the first cylinder 4, the hollow rotating shaft 24 is rotatably connected with the front side part in the first cylinder 4 through a first rolling bearing 26, the front side part in the first cylinder 4 is fixedly connected with a bearing limit stop ring 27, the front end surface of the bearing limit stop ring 27 is contacted with the rear end surface of the first rolling bearing 26 and the rear end surface of the middle idle shaft 24, the inner circumference of the bearing limit stop ring 27 is a conical surface with a small front part and a large rear part, the stepped rotating shaft 25 passes forwards through the connecting cylinder 23, the outer diameter of the rear coarse shaft of the stepped rotating shaft 25 is smaller than the inner diameter of the connecting cylinder 23, the rear coarse shaft of the stepped rotating shaft 25 is rotatably connected in the connecting cylinder 23 through a second rolling bearing 28, the front fine shaft of the stepped rotating shaft 25 extends out of the front end of the connecting cylinder 23, the cylinder walls of the first sieve cylinder 6 and the, the discharging pipe 30 is fixedly connected to the middle of the lower side wall of the second cylinder 5 in an integrally formed mode, the discharging pipe 30 is vertically arranged, the discharging pipe 30 is provided with a second ball valve 31, the front end of the second cylinder 5 is provided with a swinging mechanism used for driving the second screen cylinder 7 to rotate, and the PLC is in signal connection with the three first hydraulic cylinders 15 and the two second hydraulic cylinders 18 respectively.

Pushing mechanism includes first L type support 32, third hydraulic cylinder 33 and swing board 34, side and the front end excircle lower side integrated into one piece fixed connection of second barrel 5 on the vertical board of first L type support 32, side and the horizontal plate back side integrated into one piece fixed connection of first L type support 32 under the vertical board of first L type support 32, third hydraulic cylinder 33 is vertical to be set up, the cylinder body bottom of third hydraulic cylinder 33 articulates at the horizontal plate upper surface right side portion of first L type support 32, the length direction of swing board 34 sets up along left right direction, the left side fixed connection of swing board 34 is in the front end face middle part before the thin axle of front side of ladder pivot 25, the right side portion of swing board 34 is articulated with third hydraulic cylinder 33's piston rod upper end, PLC controller and third hydraulic cylinder 33 signal connection.

The gas-liquid separation device comprises a storage tank 35, a slurry pump 36 and a gas pipe 37, wherein the storage tank 35 is fixedly arranged on the rear side part of the upper surface of the vehicle bottom plate 1, the lower end of a discharge pipe 30 is fixedly arranged on the rear side part of the top plate of the storage tank 35 and is communicated with the interior of the storage tank 35, the middle part of the top plate of the storage tank 35 is fixedly connected with a third vertical support plate 38, the lower surface of a horizontal plate of a first L-shaped support 32 is fixedly connected with the upper side edge of the third vertical support plate 38, the upper part of the rear side of the outer circumference of the storage tank 35 is fixedly connected with a horizontal support plate 39, the slurry pump 36 is fixedly arranged on the horizontal support plate 39, the lower part of the rear side of the outer circumference of the storage tank 35 is fixedly connected with a first return pipe 40, the upper end outlet of the first return pipe 40 is fixedly connected with an inlet of the slurry pump 36, the third ball valve 42 is installed on the first return pipe 40, the air conveying pipe 37 is arranged along the front-back direction, the air inlet end of the air conveying pipe 37 is fixedly installed on the front side portion of the top plate of the storage tank 35, the first check valve 43 which drives air to flow from back to front is installed on the air conveying pipe 37, a liquid level observation window 44 is vertically arranged on the left side edge of the outer circumference of the storage tank 35, and the PLC is in signal connection with the slurry pump 36.

The carbon dioxide separation device comprises an upper gas storage tank 45, a lower gas storage tank 46, a speed reducing motor 47 and a carbon dioxide separation membrane 48, wherein the bottom of the upper gas storage tank 45 is open, the top of the lower gas storage tank 46 is open, the upper parts of the left side and the right side of the outer circumference of the upper gas storage tank 45 are fixedly connected with horizontally arranged T-shaped support plates 49, the two T-shaped support plates 49 have the same structure and are bilaterally symmetrical, the bottom of each T-shaped support plate 49 is fixedly connected with two upright posts 50, the bottoms of the four upright posts 50 are fixedly connected with a vehicle bottom plate 1, the lower gas storage tank 46 is arranged right below the upper gas storage tank 45, the middle parts of the left side and the right side of the outer circumference of the lower gas storage tank 46 are fixedly connected with lifting plates 51, fourth hydraulic oil cylinders 52 are fixedly connected between the left T-shaped support plate 49 and the lifting plate 51 on the left side and between the right T-, the speed reducing motor 47 is fixedly installed on the upper surface of the vehicle bottom plate 1 and is positioned between the material storage tank 35 and the lower air storage tank 46, the upper surface of the vehicle bottom plate 1 is fixedly provided with two first vertical supports 54 which are positioned between the speed reducing motor 47 and the lower air storage tank 46 and are arranged in parallel in a bilateral symmetry manner, a first winding roller 55 is rotatably installed between the upper ends of the two first vertical supports 54, the upper surface of the vehicle bottom plate 1 is fixedly provided with two second vertical supports 56 which are positioned on the front side of the lower air storage tank 46 and are arranged in parallel in a bilateral symmetry manner, a second winding roller 57 is rotatably installed between the upper ends of the two second vertical supports 56, the carbon dioxide separation membrane 48 is horizontally tensioned in the front-back direction between the two elastic sealing rings 53, the width in the left-right direction of the carbon dioxide separation membrane 48, the length of the first winding roller 55, the length of the second winding roller 57 and the outer diameter of, the front side part of the carbon dioxide separation membrane 48 is wound on the second winding roller 57, the power shaft of the speed reducing motor 47 is horizontally arranged along the left-right direction, the left end of the central shaft of the first winding roller 55 penetrates through the first vertical support 54 on the left side leftwards and is fixedly provided with a driven pulley 58, the left end of the power shaft of the speed reducing motor 47 is fixedly provided with a driving pulley 59, a transmission belt 60 is sleeved between the driving pulley 59 and the driven pulley 58, the rear side part of the top plate of the upper air storage tank 45 is fixedly provided with a first air inlet pipe joint 61, the air outlet end of the air pipe 37 is fixedly connected with the air inlet end of the first air inlet pipe joint 61, the inner wall of the top plate of the upper air storage tank 45 is fixedly provided with a temperature sensor 62 and a humidity sensor 63, the right side part of the upper surface of the top plate of the upper air storage tank 45 is fixedly provided, the upper side edge of the vertical plate of the second L-shaped support 64 is fixedly connected with the right side edge of the horizontal plate of the second L-shaped support 64 in an integrated forming way, a water pump 65 is fixedly arranged on the upper surface of the horizontal plate of the second L-shaped support 64, the water inlet of the water pump 65 is connected with an external cooling water source through a water inlet pipe 66 horizontally arranged along the front-back direction, the water outlet of the water pump 65 is fixedly connected with a water injection pipe 67 vertically arranged, the lower end of the water injection pipe 67 is fixedly connected with the middle part of the top plate of the upper air storage tank 45, a second one-way valve 68 for driving water flow to flow from top to bottom is arranged on the water injection pipe 67, a water injection hole 69 correspondingly communicated with the water injection pipe 67 is arranged in the center of the top plate of the upper air storage tank 45, a spray head 70 vertically and correspondingly communicated with the water injection hole 69 is fixedly arranged in the middle part of the inner wall, an exhaust pipe joint 72 is fixedly arranged in the middle of the front side of the outer circumference of the lower air storage tank 46;

the PLC is respectively in signal connection with the two fourth hydraulic oil cylinders 52, the speed reducing motor 47, the temperature sensor 62, the humidity sensor 63 and the vertical electric heating rods 71.

The spectrum analysis device comprises a cross-shaped pipe column, a small computer 73, a movable mirror 74, a fixed mirror 75, a light source 76, a beam splitter 77, an infrared detector 78 and a detection tube 79, wherein the cross-shaped pipe column consists of a horizontal tube 80 and a vertical tube 81, the horizontal tube 80 is horizontally arranged along the front-back direction, the middle part of the horizontal tube 80 is communicated with the middle part of the vertical tube 81 and is fixedly connected with the middle part of the vertical tube by integral forming, two fourth vertical support plates 82 which are arranged side by side front and back are fixedly arranged on the front side part of the upper surface of the vehicle bottom plate 1, the plane where the fourth vertical support plates 82 are arranged is vertically arranged along the left-right direction, the lower part of the front side and the lower part of the rear side of the horizontal tube 80 are respectively fixedly supported and connected with the upper sides of the two fourth vertical support plates 82, the small computer 73 is fixedly arranged on the upper parts of the left sides of the two fourth vertical support plates 82 through a, a sealing cover plate 83 is fixedly installed at the upper end of the vertical pipe 81, a fixed mirror 75 is fixedly installed in the middle of the lower surface of the sealing cover plate 83 and located at the top of the interior of the vertical pipe 81, a fifth vertical support plate 84 is fixedly installed on the upper surface of the sealing cover plate 83, the lower side of the middle of the water inlet pipe 66 is fixedly supported and connected to the upper side of the fifth vertical support plate 84, a light source 76 is fixedly installed inside the front end of the horizontal pipe 80, a beam splitter 77 is fixedly installed in the center of the interior of the cross-shaped pipe column, the plane of the beam splitter 77 is perpendicular to the plane of the cross-shaped pipe column, the front, the rear and the rear of the beam splitter 77 are obliquely arranged in a high and low mode, the included angle between the beam splitter 77 and the horizontal plane is 45 degrees, an infrared detector 78 is fixedly installed at the lower end of the vertical pipe 81, the infrared detector 78 is in signal connection with a, the rear end of the detection tube 79 is provided with a second air inlet tube joint 87, a ventilation hose 88 is fixedly connected between the exhaust tube joint 72 and the second air inlet tube joint 87, the front end of the detection tube 79 forwards penetrates through the lower side part of the rear side of the outer circumference of the vertical tube 81 and extends into the vertical tube 81, the front end of the detection tube 79 is fixedly connected with the lower side part of the inner wall of the front side of the vertical tube 81, the detection tube 79 is positioned above the infrared detector 78, one section of the detection tube 79 extending into the vertical tube 81 is a transparent tube, the rear end edge of the horizontal tube 80 is fixedly connected with a plurality of arc supporting plates 89 along an integrated forming way, the circle center line of each arc supporting plate 89 is superposed with the center line of the horizontal tube 80, the rear end of each arc supporting plate 89 is fixedly connected with a tube plate 90, a fifth hydraulic oil cylinder 91 is fixedly connected between the front side surface of the tube plate 90 and the rear side surface of the movable.

Neither the PLC controller nor the external cooling water source is shown in the figure. The hydraulic power and the power supply required by the invention are carried by additional vehicle-mounted devices, which are mature technologies in the prior art, the hydraulic power is a hydraulic station, the power supply is composed of a diesel generator and a storage battery pack, and the specific construction and the working principle are not repeated.

The working principle and the process of the invention are as follows: after the headstock is connected with the hook 3, the vehicle body is pulled to a coal bed drilling site through the headstock, a certain amount of drilling fluid is taken out from a drilling well, the drilling fluid contains coal cinder and carbon dioxide of the coal bed where a drill bit is located, and initial preparation work is carried out: the piston rods of the two fourth hydraulic oil cylinders 52 are in a contraction state, the lower end of the upper air storage tank 45 is in butt joint with the upper end of the lower air storage tank 46, the carbon dioxide separation membrane 48 positioned between the two elastic sealing rings 53 is in a normal use state, namely the section of carbon dioxide separation membrane 48 is intact, if the section of carbon dioxide separation membrane 48 is damaged, the two fourth hydraulic oil cylinders 52 need to be started, the piston rods of the two fourth hydraulic oil cylinders 52 synchronously extend downwards to lower the lower air storage tank 46, the two elastic sealing rings 53 are separated to release the carbon dioxide separation membrane 48, the speed reducing motor 47 is started, the speed reducing motor 47 drives the first winding roller 55 to rotate, the first winding roller 55 winds and stores the section of damaged carbon dioxide separation membrane 48, and meanwhile, a new section of carbon dioxide separation membrane 48 is unwound from the second winding roller 57 and horizontally tensioned and laid between the two elastic sealing rings 53, then the piston rods of the two fourth hydraulic oil cylinders 52 are retracted upwards to reset, so that the lower air storage tank 46 is lifted upwards to the initial position, and the two elastic sealing rings 53 clamp a new section of carbon dioxide separation membrane 48; after the initial preparation work is finished, the first ball valve 10 is opened, the second ball valve 31 and the third ball valve 42 are closed, the drilling fluid is filled into the conical barrel feed hopper 9, the drilling fluid enters the first barrel 4 and the second barrel 5 through the feed pipe 8, the filling of the drilling fluid is stopped when the liquid level of the drilling fluid rises upwards to a position adjacent to the first ball valve 10, the first ball valve 10 is closed, the second ball valve 31 is opened, the three first hydraulic oil cylinders 15 are controlled to be started simultaneously through the PLC, the two second hydraulic oil cylinders 18 are kept still, the piston rods of the three first hydraulic oil cylinders 15 synchronously extend forwards, the piston rods of the three first hydraulic oil cylinders 15 synchronously push the extrusion piston 11 forwards to slide forwards in the first barrel 4, the extrusion piston 11 compresses the inner space of the first barrel 4, and the liquid, gas and part of solid impurities in the drilling fluid enter the inner bottom of the second barrel 5 after being filtered through the sieve holes 29 of the first sieve barrel 6 and the second sieve barrel 7, liquid, gas and partial solid impurities enter the storage tank 35 through the discharge pipe 30, the extrusion piston 11 extrudes all the drilling fluid in the first cylinder 4 into the second cylinder 5, the liquid and solid impurity states in the storage tank 35 are observed through the liquid level observation window 44, if the solid impurities in the storage tank 35 are more, piston rods of the three first hydraulic cylinders 15 are retracted backwards and reset, the extrusion piston 11 is reset backwards, then the third ball valve 42 is opened, the second ball valve 31 is closed, the slurry pump 36 is started, the slurry pump 36 pumps the liquid and the solid impurities in the storage tank 35 back into the first cylinder 4 through the first return pipe 40 and the second return pipe 41, the third hydraulic cylinder 33 is controlled and adjusted through the PLC controller, the piston rod of the third hydraulic cylinder 33 extends out, the piston rod of the third hydraulic cylinder 33 pushes the swing plate 34 to swing up and down, the swing plate 34 drives the second sieve cylinder 7 to rotate for a certain angle, the second screen cylinder 7 and the first screen cylinder 6 are staggered, the area through which the screen holes 29 corresponding to the first screen cylinder 6 and the second screen cylinder 7 can pass is reduced, when the slurry pump 36 completely pumps and fills liquid and solid impurities in the storage tank 35 into the first cylinder 4, the slurry pump 36 and the third ball valve 42 are closed, the second ball valve 31 is opened, the three first hydraulic cylinders 15 are controlled to act again through PLC control, the piston rods of the three first hydraulic cylinders 15 synchronously extend forwards, the piston rods of the three first hydraulic cylinders 15 synchronously push the extrusion piston 11 forwards to slide and advance in the first cylinder 4, the extrusion piston 11 compresses the inner space of the first cylinder 4, the liquid, gas and part of solid impurities in the first cylinder 4 enter the inner bottom of the second cylinder 5 after being filtered through the screen holes 29 of the first screen cylinder 6 and the second screen cylinder 7, and the liquid, gas and part of solid impurities enter the storage tank 35 through the discharge pipe 30, meanwhile, the condition of solid impurities in the storage tank 35 is observed through the liquid level observation window 44, if the solid impurities in the storage tank 35 are still more, the operations are repeated until the solid impurities in the storage tank 35 basically disappear, if the liquid in the storage tank 35 is less, the solid impurities in the first cylinder 4, the second cylinder 5, the first screen cylinder 6 and the second screen cylinder 7 need to be cleaned, drilling fluid is added again, then the drilling fluid is filtered repeatedly, the liquid and the gas in the drilling fluid enter the storage tank 35 after multiple times of extrusion and filtration, the solid impurities in the drilling fluid are retained in the second screen cylinder 7, the gas enters the upper gas storage tank 45 through the first check valve 43 and the first gas inlet pipe joint 61 through the gas pipe 37, the temperature and the humidity in the upper gas storage tank 45 are respectively detected through the temperature sensor 62 and the humidity sensor 63, the PLC obtains the detection values of the temperature sensor 62 and the humidity sensor 63 and transmits the detection values to the small computer 73, the display of the small computer 73 displays the detection values of the temperature sensor 62 and the humidity sensor 63 in real time, because the transmittance of the carbon dioxide separation membrane 48 is sensitive to the temperature and the humidity, the transmittance of the carbon dioxide separation membrane 48 can be adjusted by adjusting the temperature and the humidity inside the upper air storage tank 45, specifically, the cooling water of an external cooling water source is pumped into a water injection hole 69 by a water pump 65 through a water inlet pipe 66 and a water injection pipe 67, the cooling water enters a spray head 70 inside the upper air storage tank 45 through the water injection hole 69, the spray head 70 sprays the cooling water into the upper air storage tank 45 in a spray mode, so as to adjust the humidity inside the upper air storage tank 45 in real time, the upper air storage tank 45 is heated by using each vertical electric heating rod 71, the temperature inside the upper air storage tank 45 is adjusted in real time, and the carbon dioxide in the upper air storage tank 45 downwards penetrates through the carbon, the carbon dioxide enters the lower air storage tank 46 downwards, the carbon dioxide enters the detection tube 79 through the exhaust pipe joint 72, the vent hose 88 and the second air inlet pipe joint 87, the light source 76 is turned on, the light source 76 emits a beam of light backwards to the beam splitter, the beam of light is split into two beams by the beam splitter, 50% of the light is transmitted to the moving mirror 74 and then reflected to the beam splitter, the other 50% of the light is reflected to the fixed mirror 75 vertically upwards and then reflected to the beam splitter, the two beams of light can be combined together to form coherent light with interference light characteristics, when the moving mirror 74 is driven by a piston rod of the fifth hydraulic oil cylinder 91 to move forwards and backwards until the optical path difference of the two beams of light is even times of half wavelength, the two beams of light can generate constructive interference, the interference light irradiates the rear transparent section of the detection tube 79 downwards, the interference light penetrates through the rear transparent section of the detection tube 79 and carries the carbon isotope value of the carbon dioxide in the detection tube 79 to the, the infrared detector 78 transmits the interference light signal to the small computer 73, the small computer 73 performs fourier transform processing on the interference light signal to obtain an infrared spectrogram, the infrared spectrogram is displayed on a display of the small computer 73, and a worker can judge the source of the carbon dioxide by observing the infrared spectrogram.

The cleaning steps of solid impurities in the first cylinder 4, the second cylinder 5, the first sieve cylinder 6 and the second sieve cylinder 7 are as follows: the second ball valve 31 and the third ball valve 42 are closed, the first ball valve 10 is opened, the two second hydraulic cylinders 18 are activated, the piston rods of the two second hydraulic cylinders 18 are controlled by the PLC to synchronously extend backwards, the piston rods of the two second hydraulic cylinders 18 push the circular support plate 14 to slide backwards along the three support columns 13, the circular supporting plate 14 drives the three first hydraulic oil cylinders 15 to move backwards together, the three first hydraulic oil cylinders 15 drive the extrusion piston 11 to move backwards, so that the extrusion piston 11 is drawn out from the rear end of the first cylinder 4, therefore, the rear end of the first cylinder 4 is opened, so that the solid impurities in the first cylinder 4, the second cylinder 5, the first screen cylinder 6 and the second screen cylinder 7 can be cleaned, after the cleaning is finished, and the piston rods of the two second hydraulic oil cylinders 18 are controlled to contract forwards and reset, so that the extrusion piston 11 is slidably arranged in the first cylinder 4 again.

The above embodiments are merely to illustrate rather than to limit the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.

Claims

1. An on-site coal bed carbon dioxide source identification system is characterized in that: the device comprises a vehicle body, a solid-liquid separation device, a gas-liquid separation device, a carbon dioxide separation device, a spectrum analysis device and a PLC (programmable logic controller), wherein the gas-liquid separation device, the carbon dioxide separation device and the spectrum analysis device are sequentially arranged and fixedly installed on the vehicle body from back to front, the solid-liquid separation device is arranged above the gas-liquid separation device, a discharge port of the solid-liquid separation device is connected with a feed port of the gas-liquid separation device, a gas outlet of the gas-liquid separation device is connected with a gas inlet of the carbon dioxide separation device, a gas outlet of the carbon dioxide separation device is connected with a gas inlet of the spectrum analysis device, and the PLC is respectively in signal connection with the solid-liquid.

2. The in situ coal seam carbon dioxide source identification system of claim 1, wherein: the automobile body includes the vehicle bottom board, and the lateral part is all rotated before the left side limit of vehicle bottom board and lateral part and back lateral part and the right side limit of vehicle bottom board before the lateral part and the back lateral part install with ground roll contact's wheel, the preceding side middle part fixedly connected with of vehicle bottom board be used for with the couple of locomotive connection, gas-liquid separation device, carbon dioxide separator and spectral analysis device arrange fixed mounting in proper order before by the back in the vehicle bottom board upper surface.

3. The in situ coal seam carbon dioxide source identification system of claim 2, wherein: the solid-liquid separation device comprises a first cylinder body, a second cylinder body, a first sieve cylinder and a second sieve cylinder, wherein the central lines of the first cylinder body, the second cylinder body, the first sieve cylinder and the second sieve cylinder are superposed and are horizontally arranged along the front-back direction, the front side and the rear side of the first cylinder body, the front side and the rear side of the second cylinder body, the front side and the rear side of the first sieve cylinder and the rear side of the second sieve cylinder are open, a feeding pipe is fixedly connected with the middle part of the upper side wall of the first cylinder body in an integrated manner, the feeding pipe is vertically arranged, a conical cylinder feeding hopper with a thick upper part and a thin lower part is integrally formed at the upper end of the feeding pipe, the lower end of the feeding pipe is communicated with the inside of the first cylinder body, a first ball valve is mounted on the feeding pipe, an extrusion piston is arranged on the rear side part in the first cylinder body in a sliding manner, the excircle of the extrusion piston is in sliding contact with the inner, the three supporting beams are arranged in a circumferential array, the middle part of the rear end face of each supporting beam is fixedly connected with a coaxial supporting column, the three supporting columns are slidably connected with a circular supporting plate parallel to the extrusion piston, three first hydraulic cylinders are fixedly connected between the front side face of the circular supporting plate and the rear side face of the extrusion piston, the rear ends of the cylinders of the three first hydraulic cylinders are hinged on the front side face of the circular supporting plate, the front ends of the piston rods of the three first hydraulic cylinders are fixedly connected on the rear side face of the extrusion piston, the upper side part and the lower side part of the outer circle of the rear end of a first cylinder body are fixedly connected with first vertical supporting plates in an integrated manner, the upper side part of the outer circle of the circular supporting plate is fixedly connected with second vertical supporting plates in an integrated manner, the upper side part of the first vertical supporting plate corresponds to the upper side of the, a second hydraulic cylinder is fixedly connected between the first vertical support plate at the upper side and the second vertical support plate at the upper side and between the first vertical support plate at the lower side and the second vertical support plate at the lower side, the front ends of the cylinder bodies of the two second hydraulic cylinders are respectively hinged on the rear side surfaces of the two corresponding first vertical support plates, the rear ends of the piston rods of the two second hydraulic cylinders are respectively fixedly connected on the front side surfaces of the two corresponding second vertical support plates, a first flange plate is integrally formed on the excircle of the front end of the first cylinder body, a second flange plate is integrally formed on the rear end of the second cylinder body, the first flange plate and the second flange plate are fixedly connected through a plurality of fastening bolts arranged in a circumferential array, the outer diameter of the second cylinder body is smaller than that of the second flange plate, the inner diameter of the second cylinder body is larger than that of the second flange plate, an annular connecting plate is integrally formed on the inner circle at the front end of the second cylinder body, a connecting cylinder concentric with the second cylinder body is fixedly connected on, the first screen cylinder is concentrically arranged in the second cylinder body, the inner diameter of the first screen cylinder, the inner diameter of the annular connecting plate and the inner diameter of the second flange plate are the same, the outer diameter of the first screen cylinder is smaller than the inner diameter of the second cylinder body, the front end and the rear end of the first screen cylinder are fixedly connected to the second flange plate and the annular connecting plate respectively, the second screen cylinder is concentrically and rotatably arranged in the first screen cylinder, the outer diameter of the second screen cylinder is the same as the inner diameter of the first screen cylinder, the rear end of the second screen cylinder is integrally formed with a hollow rotating shaft, the front end of the second screen cylinder is integrally formed with a stepped rotating shaft which is thin in front and thick in rear, the outer diameter of the hollow rotating shaft is smaller than the inner diameter of the first cylinder body, the hollow rotating shaft extends backwards to the front side part in the first cylinder body, the hollow rotating shaft is rotatably connected to the front side part in the first cylinder body through the first rolling bearing, the front side part in the first cylinder body is fixedly connected with a bearing limit stop ring, the front end face of the, the interior circumference of bearing limit stop ring is the big conical surface in little back in front, the connecting cylinder is passed forward to the ladder pivot, the thick axle external diameter of rear side of ladder pivot is less than the internal diameter of connecting cylinder, the thick axle of rear side of ladder pivot is rotated through second antifriction bearing and is connected in the connecting cylinder, the front end of connecting cylinder is stretched out to the thin axle of front side of ladder pivot, a plurality of sieve mesh has evenly been seted up respectively on the section of thick bamboo wall of first sieve section of thick bamboo and second sieve section of thick bamboo, the lower lateral wall middle part integrated into one piece fixedly connected with discharging pipe of second barrel, the vertical setting of discharging pipe, install the second ball valve on the discharging pipe, the front end of second barrel is provided with and is used for driving second sieve section of thick bamboo pivoted swing mechanism, the PLC controller respectively with three first hydraulic cylinder and.

4. The in situ coal seam carbon dioxide source identification system of claim 3, wherein: pushing mechanism includes first L type support, third hydraulic cylinder and swing board, the vertical board of first L type support is gone up side and the front end excircle lower side integrated into one piece fixed connection of second barrel, the vertical board lower side of first L type support and the horizontal plate back side integrated into one piece fixed connection of first L type support, the vertical setting of third hydraulic cylinder, third hydraulic cylinder's cylinder body bottom articulates at the horizontal plate upper surface right side portion of first L type support, the length direction of swing board sets up along controlling the direction, the left side fixed connection of swing board is at the thin axle front end middle part in the front side of ladder pivot, the right side portion of swing board is articulated with third hydraulic cylinder's piston rod upper end, PLC controller and third hydraulic cylinder signal connection.

5. The in situ coal seam carbon dioxide source identification system of claim 4, wherein: the gas-liquid separation device comprises a storage tank, a slurry pump and a gas pipe, wherein the storage tank is fixedly arranged on the rear side part of the upper surface of a vehicle bottom plate, the lower end of a discharge pipe is fixedly arranged on the rear side part of a top plate of the storage tank and communicated with the inside of the storage tank, the middle part of the top plate of the storage tank is fixedly connected with a third vertical support plate, the lower surface of a horizontal plate of a first L-shaped support is fixedly connected with the upper side edge of the third vertical support plate, the upper part of the rear side of the outer circumference of the storage tank is fixedly connected with a horizontal support plate, the slurry pump is fixedly arranged on the horizontal support plate, the lower part of the rear side of the outer circumference of the storage tank is fixedly connected with a first return pipe, the upper end outlet of the first return pipe is fixedly connected with an inlet of a slurry pump, the outlet of the, the gas transmission pipe sets up along the fore-and-aft direction, and the air inlet end fixed mounting of gas transmission pipe is installed on the gas transmission pipe and is ordered about the first check valve that gas flowed forward backward by, and the outer circumference left side of storage tank is along vertical liquid level observation window that is provided with, PLC controller and slush pump signal connection on the gas transmission pipe.

6. The in situ coal seam carbon dioxide source identification system of claim 5, wherein: the carbon dioxide separation device comprises an upper gas storage tank, a lower gas storage tank, a speed reduction motor and a carbon dioxide separation membrane, wherein the bottom of the upper gas storage tank is open, the top of the lower gas storage tank is open, horizontally arranged T-shaped support plates are fixedly connected to the upper parts of the left side and the right side of the outer circumference of the upper gas storage tank, the two T-shaped support plates are identical in structure and symmetrical left and right, two stand columns are fixedly connected to the bottom of each T-shaped support plate, the bottoms of the four stand columns are fixedly connected to a vehicle bottom plate, the lower gas storage tank is arranged right below the upper gas storage tank, lifting plates are fixedly connected to the middle parts of the left side and the right side of the outer circumference of the lower gas storage tank, fourth hydraulic cylinders are fixedly connected between the left T-shaped support plate and the left lifting plate and between the right T-, the speed reducing motor is fixedly arranged on the upper surface of the vehicle bottom plate and is positioned between the material storage tank and the lower gas storage tank, the upper surface of the vehicle bottom plate is fixedly provided with two first vertical supports which are positioned between the speed reducing motor and the lower gas storage tank and are arranged side by side in a bilateral symmetry manner, a first winding roller is rotatably arranged between the upper ends of the two first vertical supports, the upper surface of the vehicle bottom plate is fixedly provided with two second vertical supports which are positioned on the front side of the lower gas storage tank and are arranged side by side in a bilateral symmetry manner, a second winding roller is rotatably arranged between the upper ends of the two second vertical supports, the carbon dioxide separation membrane is horizontally tensioned between the two elastic sealing rings along the front-back direction, the width of the carbon dioxide separation membrane in the left-right direction, the length of the first winding roller, the length of the second winding roller and the outer diameter of the elastic sealing rings are the same, the back, a power shaft of a speed reducing motor is horizontally arranged along the left-right direction, the left end of a central shaft of a first winding roller penetrates through a first vertical support on the left side leftwards and is fixedly provided with a driven belt pulley, the left end of the power shaft of the speed reducing motor is fixedly provided with a driving belt pulley, a transmission belt is sleeved between the driving belt pulley and the driven belt pulley, the rear side part of a top plate of an upper air storage tank is fixedly provided with a first air inlet pipe joint, the air outlet end of an air pipe is fixedly connected with the air inlet end of the first air inlet pipe joint, the inner wall of the top plate of the upper air storage tank is fixedly provided with a temperature sensor and a humidity sensor, the right side part of the upper surface of the top plate of the upper air storage tank is fixedly provided with a second L-shaped support, the lower side edge of a vertical plate of the second L-shaped support is, a water pump is fixedly installed on the upper surface of a horizontal plate of the second L-shaped support, a water inlet of the water pump is connected with an external cooling water source through a water inlet pipe horizontally arranged along the front-back direction, a water outlet of the water pump is fixedly connected with a water injection pipe vertically arranged, the lower end of the water injection pipe is fixedly connected with the middle part of a top plate of the upper air storage tank, a second one-way valve for driving water flow to flow from top to bottom is installed on the water injection pipe, a water injection hole correspondingly communicated with the water injection pipe is formed in the center of the top plate of the upper air storage tank, a spray head vertically and correspondingly communicated with the water injection hole is fixedly installed in the middle part of the inner wall of the top plate of the upper air storage tank, the spray direction of the spray head is downward arranged;

7. The in situ coal seam carbon dioxide source identification system of claim 6, wherein: the spectrum analysis device comprises a cross-shaped pipe column, a small computer, a movable mirror, a fixed mirror, a light source, a beam splitter, an infrared detector and a detection tube, wherein the cross-shaped pipe column consists of a horizontal pipe and a vertical pipe, the horizontal pipe is horizontally arranged along the front and back direction, the middle part of the horizontal pipe is communicated with the middle part of the vertical pipe and is fixedly connected with the vertical pipe in an integrated forming way, two fourth vertical support plates which are arranged side by side from front to back are fixedly arranged at the front side part of the upper surface of a vehicle bottom plate, the plane where the fourth vertical support plates are arranged is vertically arranged along the left and right direction, the lower part of the front side of the horizontal pipe and the lower part of the rear side of the horizontal pipe are respectively fixedly supported and connected at the upper sides of the two fourth vertical support plates, the small computer is fixedly arranged at the upper parts of the left sides of the two fourth vertical support plates through connecting rods, the fixed mirror is fixedly arranged in the middle of the lower surface of the sealing cover plate and positioned at the top in the vertical pipe, the upper surface of the sealing cover plate is fixedly provided with a fifth vertical support plate, the lower side of the middle part of the water inlet pipe is fixedly supported and connected on the upper side edge of the fifth vertical support plate, the light source is fixedly arranged in the front end of the horizontal pipe, the beam splitter is fixedly arranged in the center of the inside of the cross-shaped pipe column, the plane where the beam splitter is positioned is vertical to the plane where the cross-shaped pipe column is positioned, the front part of the beam splitter is low and the rear part of the beam splitter is high-inclined, the included angle between the beam splitter and the horizontal plane is 45 degrees, the infrared detector is fixedly arranged at the lower end of the vertical pipe, the infrared detector is in signal connection with the small computer through a signal cable, the middle part of the fourth vertical support plate at the rear side is provided, the front end of the detection tube passes the outer circumference rear side downside of vertical pipe forward and stretches into inside the vertical pipe, the front end fixed connection of detection tube is at vertical pipe front side inner wall downside, the detection tube is located the top of infrared detector, the detection tube stretches into vertical intraduct one section be the hyaline tube, the back end edge integrated into one piece fixedly connected with a plurality of circular arc extension boards of horizontal pipe, the centre of a circle line of each circular arc extension board all coincides with the central line of horizontal pipe, the rear end fixedly connected with tube sheet of each circular arc extension board, fixedly connected with fifth hydraulic cylinder between the leading flank of tube sheet and the trailing flank of moving mirror, the PLC controller is connected with fifth hydraulic cylinder and small-size computer signal.