63results about How to "Continuous injection" patented technology

The invention discloses a tobacco aerobic cracking analysis method, comprising the following steps: firstly placing the tobacco sample on the cracking pool of the cracker, and simultaneously introducing a mixing gas containing O2 and N2 to the cracking pool for sweeping, wherein the sweeping gas brings the tobacco sample cracking product to a cold well, the cold well keeps at -80 DEG C to -60 DEG C, the tobacco sample cracking product is condensed and captured by the cold well, and the extra gas is shunted; after the tobacco sample is cracked completely, introducing the inertia gas to the cold well; while raising the temperature in the cold well, bringing the tobacco sample cracking product captured by the cold well to the GC system by inertia gas for analysis. The method enables the tobacco sample to be directly cracked under aerobic condition, thereby simulating actual tobacco combustion condition and working condition largest possibly. Compared with the inertia atmosphere anaerobic cracking, the test data result is more actual and reliable.

A glue gun includes a melt portion configured to receive a stick-shaped hot melt adhesive, and then heat, melt, and inject the hot melt adhesive. The melt portion has an inlet opening to receive the stick-shaped hot melt adhesive, and an outlet opening to inject liquid hot melt adhesive. The liquid hot melt adhesive is prepared by heating and melting the stick-shaped hot melt adhesive. The inlet opening communicates with the outlet opening via a plurality of passages.

The invention discloses a method for efficiently improving the permeability of a coal body by utilizing liquid nitrogen-hot gas cold and hot cycle impact. Liquid nitrogen is injected and gasified forabsorbing heat to quickly reduce the temperature of the coal body, and water in the coal body is iced and expanded to apply icing expansive force to the coal body for cracking; meanwhile, the gasifiednitrogen rapidly expands in volume to apply gas expansion force to the coal body for cracking, the gas pressure in a drill hole is rapidly increased, and the nitrogen is exhausted through an exhaustpipe; then, after liquid nitrogen injection is stopped, the liquid nitrogen is continuously gasified and expanded in the layer-crossing drill hole to apply gas expansion force to the coal body for cracking, and the gasified nitrogen flows back and is recycled, so that subsequent repeated use is facilitated; hot steam is injected to apply gas impact force to the coal body for cracking, meanwhile, the temperature of the coal body is rapidly increased, and the coal body is cracked through the temperature difference; then the hot steam is discharged out of the layer-crossing drill hole, so that the gas pressure in the layer-crossing drill hole is reduced, and the hot steam can be continuously injected; and the steps are repeated for cycle to carry out cold and hot alternation to impact the coal body, therefore, the permeability improvement time is effectively shortened, and the permeability improvement effect is ensured.

The invention discloses an adjustable precise continuous injector. The adjustable precise continuous injector comprises needle cylinders, a needle bed, an injection arm and an injection piston, and is characterized in that the needle cylinders comprise a first needle cylinder and a second needle cylinder, a liquid absorbing arm is arranged in the first needle cylinder, the top end of the liquid absorbing arm is connected with a liquid absorbing pull plate, the bottom end of the liquid absorbing arm is connected with the injection piston, the liquid absorbing arm is a ladder-shaped piston arm, a control device is arranged outside the second needle cylinder, the injection arm is arranged inside the second needle cylinder, the upper end of the injection arm is connected with an injection pressing plate, quantifying threads are arranged on the injection arm, the injection arm is connected with a second power device, a locator is further arranged in the second needle cylinder, one end of the locator is connected with a first power device, the other end of the locator extends into the first needle cylinder to be matched with a ladder-shaped piston, and a power supply device is arranged at the lower part of the second needle cylinder. The adjustable precise continuous injector has the advantages that the structure is simple, the use is convenient, the labor intensity is low, multiple times of injection can be carried out through one-time extraction of liquid medicine, the dosage can be rapidly adjusted at any time, the dosage is accurate, and the operation errors are small.

The invention relates to an animal syringe with an improved structure. The animal syringe comprises a fixed body part, a pressurization part, a liquid medicine injection part and a disinfectant spraying part. The fixed body part mainly comprises a main shell, a working rod piece and a restoring spring, wherein the main shell is formed by combining one shell piece on one side and the other shell piece on the other side and is provided with a hollow part, the working rod piece is arranged in the hollow part of the main shell, and the restoring spring is located in the main shell and provides restoring force for the working rod piece. A liquid medicine chamber is adjustable in size, liquid medicine can be automatically supplemented, and convenience is brought to usage; when the liquid medicine chamber is adjustable in size, loss pistons such as an O-shaped ring can be replaced, and a main body of the syringe can be used in a semipermanent mode. Injection motion is easy to carry out. In terms of animals of pigs capable of rapidly moving, the problem that a syringe needle is easy to bend or break does not exist. By means of one-shot pressurization beating for animal skin, marker liquid or color disinfectants can be continuously used for animal skin coating and injection of injection liquid medicine into the skin.

In a combustion space of a combustion engine, an inlet valve to supplies a gaseous medium which contains oxygen to the combustion space. A movable piston to compress the gaseous medium in the combustion spaces. An injector injects fuel in the combustion space in a jet which comprises a multiplicity of small fuel drops. The injector injects fuel in the combustion space at such a high initial velocity that the fuel injected in the jet mixes with the gaseous medium to form a substantially homogeneous mixture before the mixture has been decelerated to a velocity at which the fuel ignites and burns. Devices may cool the gaseous medium and the fuel before entry into the combustion space.

The invention discloses a resin transfer molding forming glue injection machine of continuous fiber reinforced PBT (polybutylece terephthalate) composite materials. The resin transfer molding forming glue injection machine comprises a first material tank, a second material tank and a third material tank, wherein the first material tank is used for containing monomers and heating the monomers, and the second material tank is used for containing catalysts. The monomers and the catalysts are respectively conveyed to the third material tank through respective metering devices to be mixed into glue injection raw materials, the glue injection raw materials are filled into a mold through a material outlet arranged at the bottom end of the third material tank and a connecting pipeline for carrying out molding forming, and in addition, the size of the third material tank is greater than the size of the mold for containing the glue injection raw materials. The automatic glue injection machine provided by the invention has the advantages that the metering blending and the glue injection can be automatically carried out, the process is continuous, and the glue injection efficiency is high.

The invention discloses a crop fertilization and pesticide spray trolley. A water and fertilizer box is fixedly arranged on a frame; a spray assembly is arranged in the water and fertilizer box; a water outlet of the spray assembly is connected with a sprinkler; a pressurizing pump rod of the spray assembly is arranged outside the water and fertilizer box; a discharge port is formed below the water and fertilizer box; a rubber plug is movably connected on the discharge port; the discharge port is communicated with a fertilizer inlet of a lower fertilizer box; a fertilizer poking wheel is arranged in the lower fertilizer box and is connected with a shaft hole of the box body of the lower fertilizer box; one end of the a fertilizer poking wheel axle is provided with a driven chain wheel and a rocker arm; the tail end of the rocker arm is provided with a connecting rod; the connecting rod is hinged to the pressurizing pump rod; a wheel axle is provided with a flywheel; the flywheel is linked to the driven wheel through a chain; the sprinkler can continuously and uniformly spray without missing, and a peasant pushes the trolley at the rear end and is away from the misty pesticide, so that the health of the peasant is protected, the labor intensity of the peasant is relieved, the working efficiency is improved, meanwhile the working efficiency of fertilization is improved and the health of the peasant is protected.

The invention belongs to the technical field of cigarette production equipment, and particularly relates to a clamping type cigarette hole size detection device. The clamping type cigarette hole sizedetection device comprises a rotating clamping device, a detection mechanism and a data processing system. The rotating clamping device comprises a bottom plate and a receiving plate, wherein the bottom plate is provided with a first through hole, and a cigarette to be detected is arranged in the first through hole in a penetrating mode. The receiving plate is positioned at the lower end of the cigarette and is used for supporting the cigarette, a lifting seat moving up and down is arranged above the bottom plate, a rotating seat used for rotating the cigarette to be detected is arranged in the lifting seat, a clamping assembly is arranged in the rotating seat, a limiting seat is further arranged above a clamping block, and the detection mechanism comprises a light source and a camera. Theclamping type cigarette hole size detection device aims to solve the problem that an existing device cannot measure the size of one-line tipping paper perforating a cigarette hole nondestructively, the need of effectively monitoring the perforating quality of the on-line tipping paper perforating the cigarette is met, and the aim of controlling over the stability of the ventilation rate of a filter tip and the operation condition of on-line laser perforating equipment is further achieved.

The invention discloses a continuous carbon fiber reinforced PEKK prepreg production process and equipment, relates to the technical field of continuous carbon fiber reinforced PEKK prepreg production, and is mainly used for solving the problem that industrial production of continuous carbon fiber reinforced PEKK prepregs cannot be realized in China at present. The continuous carbon fiber reinforced PEKK prepreg production process comprises the following steps: 1, performing unwinding and leveling; 2, performing carding; 3, spreading the yarns and removing a sizing agent; 4, performing gluing; 5, performing primary gum dipping; 6, performing secondary gum dipping; 7, performing cooling; 8, performing online detection; and 9, performing winding. The equipment structurally comprises a creel, a guide roller set, a grate, a high-temperature drying oven, gluing molds, an extrusion dipping roller set, a dipping device, a cooling platform, an online detector, a traction roller set and a winding device. According to the continuous carbon fiber reinforced PEKK prepreg production process and equipment provided by the invention, the industrial production of the continuous carbon fiber reinforced PEKK prepreg can be completed by utilizing the process and the equipment.

The present application relates to a method for simultaneously detecting four isomers of resveratrol in peanut by using ultra performance liquid chromatography during the operation procedure and accurately controlling the detection conditions. The method of the invention can achieve continuous sample injection, and perform sample analysis in batch. The detection time for each sample is only about 10 min, which greatly improves the detection efficiency. Further, the ultra performance liquid chromatography has high sensitivity and a low detection limit. The method of the invention adopts ethanol extraction under heating in the earlier stage of extraction, and controls the temperature of the extraction, so as to achieve effective extraction of four isomers of resveratrol, time saving, and efficient extraction and separation.

The invention relates to a piston pump for thick matter, in particular for high-solids sewage sludge, coal sludge and concrete. The piston pump has at least one delivery cylinder (16) which contains a motor-driven or hydraulically driven delivery piston (20) and which has an orifice (12) which communicates alternately with the interior of a material feed container (10) and with a pressure delivery line (30) in a slide-controlled manner in accordance with the movement of the delivery piston (20). In order to significantly increase the degree of filling of the at least one delivery cylinder (16), an annular nozzle (32) opening into the delivery cylinder (16) in the region of the orifice (12) is provided, and this annular nozzle (32) is connected to an external pressure line (34) to which a lubricant can be admitted.

The invention belongs to the technical field of detection devices and relates to a cigarette perforated tipping paper hole detector. The cigarette perforated tipping paper hole detector comprises a detection system and a data processing system; the detection system comprises an imaging mechanism and a light source; the imaging mechanism is in signal connection with a data processing system and isused for capturing hole images and transmitting the hole images to the data processing system; the light source emits light to irradiate cigarettes to be tested; the imaging mechanism and the light source are located at the same side of the cigarettes to be detected; and the data processing system is used for calculating and processing hole image information transmitted by the imaging mechanism soas to obtain hole parameters on cigarette tipping paper. With the cigarette perforated tipping paper hole detector of the invention adopted, the problem that an existing device fails to measure the size of cigarette holes during online tipping paper perforating can be solved; a requirement for the effective monitoring of the perforating quality of the cigarette holes during the online tipping paper perforating can be satisfied; and the stability of the control of the ventilation rate of filter tips and the operating condition of online laser perforating equipment can be realized.

The invention provides a mechanical arm device for vaccine injection, an injection system and a numerical control system. The injection system is controlled through the numerical control system. The injection system comprises a driving unit, an injection unit and a sterilization unit. The numerical control system firstly identifies the age and gender of an injected object through an infrared identification system, then accurately positions blood vessel and muscle positions of human body vaccine injection to determine an injection position, and controls the sterilization unit to sterilize and disinfect the injection position; and the driving unit is used for driving the injection unit to inject a vaccine to the injection position. According to the scheme, the mechanical arm device is convenient to operate and convenient to assemble, use and maintain; traditional human eye recognition is replaced with infrared intelligent positioning of the injection position, so that the injection position is more accurate, the operation is safer, and metering injection can be achieved; and the infrared identification system can accurately position the blood vessel position of human body vaccine injection, and the numerical control system can accurately control all rotating shafts of a mechanical arm.

The invention discloses a self-cleaning type nano-colloid jet-flow polishing device. A plunger pump (4) is mounted on a first pipeline (1) and a second pipeline (5); a nano-colloid container (1) is connected with the first pipeline (1) and a fifth pipeline (21); a cleaning device (23) is connected with a sixth pipeline (22) and a seventh pipeline (27); a pressurized energy accumulation device (8)is mounted on a third pipeline (7) and a fourth pipeline (9); a cavitation jet-flow spraying nozzle (14) is mounted at the tail end of the fourth pipeline (9); laser sensors (29) are arranged on the third pipeline, the fifth pipeline and the spraying nozzle respectively and are mounted in a non-contact manner. By adopting the self-cleaning type nano-colloid jet-flow polishing device, the problemsof a common nano-colloid jet-flow device that nano-colloid is easy to deposit and easy to pollute, nano-colloid liquid flow cannot be continuously sprayed, the device is uneasy to wash and maintain, and the jet-flow polishing efficiency of an optical element is low and the like are solved; sealed type circulation of a nano-colloid solution is realized.

The invention provides an annulus protection fluid for a CO2 flooding injection well and a preparation method thereof. The annulus protection fluid comprises a corrosion inhibitor, a density regulator, a sterilizing agent, a pH regulator, alcohol and water. The annulus protection fluid provided by the invention has good synergy in components, so the problem of corrosion of CO2 injection well annulus can be controlled; and the annulus protection fluid has the advantages of large density regulation range, good sterilization effect, excellent pH value control effect, capability of well inhibitingcorrosion of an oil sleeve pipe, low environmentally-friendly preparation cost, low freezing point and the like, and is simple, convenient and easily-operable in on-site preparation method, reliableand stable in performances and easy in storage. According to the invention, the annulus protection fluid for the CO2 flooding injection well and the preparation method thereof are applicable to annular space of oil production wells and gas injection and water injection wells, and can well control the problem of corrosion of annulus oil sleeve pipes.

The invention belongs to the technical field of tobacco processing equipment, and particularly relates to a negative pressure adsorption rotary cigarette hole size detection device. The device comprises a feeding system, an adsorption rotating system, a detecting system and a data processing system. The feeding system comprises an obliquely arranged smoke groove, and the open end of the smoke groove is provided with an arc-shaped placing groove; the adsorption rotating system comprises a rotating seat, a moving seat and a cylinder, the rotating seat is located at one side of the smoke groove,the end portion of the rotating seat is provided with an arc-shaped adsorption plate, the arc-shaped adsorption plate is located at the inclined top of a cigarette in the arc-shaped placing groove, and the rotating seat is rotationally connected with the moving seat; and the detection system comprises a light source and a camera which are located at the inclined top of the arc-shaped placing groove. The objective of the invention is to overcome the problem that a current device cannot measure the size of a punching cigarette hole of online tipping paper in a lossless mode and meet the demand of effective monitoring of the quality of the punching cigarette hole of the online tipping paper so as to achieve the purpose of control of the operation condition of the nozzle ventilation efficiencystability and the online laser punching device.

The invention belongs to the technical field of detecting devices, and particularly relates to a hole size detection device of a horizontal pushing type cigarette. The device comprises a feeding mechanism used for inputting a to-be-detected complete cigarette, a pushing mechanism used for pushing the cigarette and a discharging mechanism used for outputting the cigarette; the feeding mechanism comprises an obliquely arranged cigarette groove, the end, provided with an opening, of the cigarette groove is provided with a positioning groove, the pushing mechanism comprises a push rod, the end, away from the push rod, of the cigarette groove is provided with an annular mounting belt, and the inner wall of the annular mounting belt is uniformly provided with three imaging mechanism or above; one side of a filter tip end of the cigarette in the positioning groove is provided with a light source, light emitted by the light source irradiates the to-be-detected cigarette, the irradiation direction of the light is coincident with the axial direction of the cigarette. The invention aims to solve the problem that an existing device cannot measure the hole size of an online tipping paper perforated cigarette without loss and meet the requirements for effectively monitoring the punching quality of the online tipping paper perforated cigarette, thereby achieving the purpose of controlling thestability of the ventilation rate of a filter tip and the operating condition of online laser punching equipment.

The invention belongs to the technical field of in-situ leaching uranium mining experimental equipment, and particularly relates to an in-situ leaching uranium mining full-process circulation experimental device. A constant-speed constant-pressure double-cylinder pump is connected with a high-pressure test column through a leaching agent liquid inlet valve, wherein a column leaching port pressureregulating valve is arranged at an outlet of the high-pressure test column; the column leaching port pressure regulating valve is connected with the upper part of an ion exchange column after passingthrough a leaching agent liquid outlet valve; the lower part of the ion exchange column is connected into a liquid collecting tank through an adsorption tail liquid valve; the liquid collecting tank is connected to a stirring tank through a reciprocating plunger pump and a liquid collecting valve; an oxygen steel cylinder is connected to the stirring tank through an oxygen pressure regulating valve, an oxygen flow controller and an oxygen one-way valve; a carbon dioxide steel cylinder is connected to the stirring tank through a carbon dioxide pressure regulating valve, a carbon dioxide flow controller and a carbon dioxide one-way valve; the stirring tank is connected to the constant-speed constant-pressure double-cylinder pump through a liquid distribution valve; and the column leaching port pressure regulating valve is connected to the liquid collecting tank through a leaching liquid non-adsorption valve. The whole equipment process is a process circulation process, only transparent pipelines need to be checked and replaced at regular intervals, and operation is convenient.

The invention relates to a laser driving needleless injection system which adopts laser as driving power, generates high-speed injection flow and realizes needleless injection. The system comprises a laser, an optical fiber and an injector, wherein the laser generates required laser; the beam collimation is adjusted through a beam expander; the laser is focused by a focus lens, and is coupled to the optical fiber; the injector is a piston type injector or a non-piston type injector; the output end of the optical fiber is connected with the kinetic energy chamber part of the injector; liquid is filled in the kinetic energy chamber; and an injection port is arranged at the front end of an administration chamber of the injector. The beam collimation of the laser generated by the laser is adjusted through the beam expander; the laser is focused by the focus lens, is coupled to the optical fiber, and is transmitted to the kinetic energy chamber of the injector to act on the liquid in the chamber; after the liquid absorbs the laser, the liquid is subject to photothermal conversion; and the liquid expands to push the piston so as to act on the administration chamber so that the medicinalliquid is injected to tissues through an injection orifice, or the non-piston injector is utilized to directing act the piston on the medicinal liquid so that the medicament is injected to the administrated position.

The invention belongs to the technical field of detecting devices and relates to a device for the non-destructive detection of cigarette holes. The device comprises a detecting system and a data processing system; the detecting system comprises a rotation gripper and an imaging mechanism; the rotation gripper is used for clamping and fixing cigarettes to be detected and driving the cigarettes to be detected to rotate; the imaging mechanism is used for capturing hole images; and the data processing system is in signal connection with the imaging mechanism and is used for calculating hole imageinformation transmitted by the imaging mechanism so as to obtain hole parameters on cigarette tipping paper. With the device of the invention adopted, the problem that an existing device fails to perform non-destructive measurement on the size of cigarette holes during online tipping paper perforating can be solved; a requirement for the effective monitoring of the perforating quality of the cigarette holes during the online tipping paper perforating can be satisfied; and the stability of the control of the ventilation rate of filter tips and the operating condition of online laser perforatingequipment can be realized.

The invention discloses a brucellosis vaccine needle-free injection system and application. The brucellosis vaccine needle-free injection system comprises a container filled with a brucellosis vaccine and a readable carrier. Content recorded in the readable carrier includes that needle-free injection dosage of the brucellosis vaccine is not larger than the standard dosage of the brucellosis vaccine. Experiments prove that when a needle-free injection ampoule and a needle-free syringe are combined and used for immunization, the antigen dosage only accounts for part of a traditional intramuscular injection antigen dosage, and the same or better immune effect can be achieved. It is further indicated that a needle-free immune mode is an ideal strategy capable of being selected by the brucellosis immunization vaccine.

The invention belongs to the technical field of detection devices, and particularly relates to a horizontal push type cigarette tipping paper hole detecting device. The horizontal push type cigarettetipping paper hole detecting device comprises a sample introduction mechanism for inputting a complete cigarette to be inspected, a rotation mechanism for rotating the cigarette, and a discharge mechanism for outputting the cigarette; the sample introduction mechanism includes a cigarette hopper; a rotating column is installed in the cigarette hopper; a plurality of strip grooves are formed on therotating column; a material falling channel is arranged on the lower side of the cigarette hopper; the rotating mechanism includes a positioning groove and two mounting brackets located above the positioning groove plate; rotating rollers are mounted on the mounting brackets; compression cylinders are also connected to the mounting brackets; and a light source and a camera are arranged below thecigarette in the positioning groove plate. The purpose of the invention is to overcome the problem that the devices in the prior art can not perform nondestructive measurement on the hole size of theonline tipping paper punched cigarettes, meet the need for effective monitoring of punching quality of the online tipping paper punched cigarettes, and achieve the purpose of controlling the stabilityof the filter tip ventilation rate and the operation state of the online laser punching equipment.

The invention discloses a continuous liquid sample injection system and a control method thereof. The continuous sample injection of samples is realized by using two or more injection pumps. The system comprises two or more multi-channel rotary valves of which the number is same as that of the injection pumps, the liquid outlet of each injection pump is connected with a liquid path inlet of the multi-channel rotary valve corresponding to the injection pump, and each multi-channel rotary valve comprises at least two liquid path outlets, wherein one liquid path outlet corresponds to a sample source, and the other liquid path outlet corresponds to a detection chamber; and the liquid path outlets, corresponding to the sample source or the detection chamber, of all the multi-channel rotary valves are converged together through a pipeline and then are communicated with the sample source or the detection chamber. The system and the control method provided by the invention can overcome the problem that a single injection pump cannot realize the continuous sample injection, and realize the continuous, accurate and stable sample injection on the premise of protecting vulnerable samples.

The invention relates to a laser driving needleless injection system which adopts laser as driving power, generates high-speed injection flow and realizes needleless injection. The system comprises a laser, an optical fiber and an injector, wherein the laser generates required laser; the beam collimation is adjusted through a beam expander; the laser is focused by a focus lens, and is coupled to the optical fiber; the injector is a piston type injector or a non-piston type injector; the output end of the optical fiber is connected with the kinetic energy chamber part of the injector; liquid is filled in the kinetic energy chamber; and an injection port is arranged at the front end of an administration chamber of the injector. The beam collimation of the laser generated by the laser is adjusted through the beam expander; the laser is focused by the focus lens, is coupled to the optical fiber, and is transmitted to the kinetic energy chamber of the injector to act on the liquid in the chamber; after the liquid absorbs the laser, the liquid is subject to photothermal conversion; and the liquid expands to push the piston so as to act on the administration chamber so that the medicinal liquid is injected to tissues through an injection orifice, or the non-piston injector is utilized to directing act the piston on the medicinal liquid so that the medicament is injected to the administrated position.

In a combustion space of a combustion engine, an inlet valve to supplies a gaseous medium which contains oxygen to the combustion space. A movable piston to compress the gaseous medium in the combustion spaces. An injector injects fuel in the combustion space in a jet which comprises a multiplicity of small fuel drops. The injector injects fuel in the combustion space at such a high initial velocity that the fuel injected in the jet mixes with the gaseous medium to form a substantially homogeneous mixture before the mixture has been decelerated to a velocity at which the fuel ignites and burns. Devices may cool the gaseous medium and the fuel before entry into the combustion space.

The invention provides a control method of a tray sorting machine and relates to the technical field of automatic sorting systems. The problems that in the prior art, in the sorting process, luggage slips, and the sorting efficiency is low are solved. The control method mainly comprises the steps that the tray speed is obtained; the luggage speed is obtained through a first photoelectric detector and a second photoelectric detector; the component velocity of the operation velocity of an input conveyor in the tray speed direction is adjusted to be identical to the tray speed; operation velocities of the conveyor are adjusted dynamically, the luggage velocity is compensated to be equal to the operation velocity of the input conveyor in a fitted mode, and the luggage is distributed to preset trays; when the luggage reaches the input point through the input conveyor, the input conveyor is controlled to input the luggage to the trays selectively; and the luggage is sorted to the destinations through the trays. The control method is used for designing a control driving system of the sorting machine.

The invention discloses a liquid nitrogen cycle cold shock anti-reflection method based on multi-parameter monitoring. The video monitoring lens shoots in real time to monitor the size of the bubbles and the flow rate of the bubbles generated inside the liquid nitrogen in the drilled hole, and feeds back to the monitoring control center for storage. ; The quality sensor monitors the mass loss rate of liquid nitrogen in the drilled hole in real time and feeds back to the monitoring and control center for storage; the gas monitoring device detects the gas pressure, gas flow and gas temperature in the pressure relief pipe in real time and feeds back to the monitoring and control center for storage; completed After one fracturing, then SF 6 The gas detector, the acoustic wave transmitter and the acoustic wave receiver detect the anti-reflection cracking effect, that is, the sound wave velocity can detect the number of cracks generated after the anti-reflection is generated, and the SF 6 Gas detection can detect the connectivity between created fractures. Through the monitoring data, the cold shock of liquid nitrogen, the expansion pressure of phase change gas and the frost heave pressure of water in the crack can be used to crack the coal body, and the anti-permeability effect can be effectively monitored.