58results about How to "No cross interference" patented technology

The invention relates to a magnetic particle chemiluminescence double-layer micro-fluidic chip used for whole-blood sample detection. The micro-fluidic chip comprises a top plate (1) and a bottom plate (2). The top plate comprises a sample feeding port (4), a sample filling region (12), a marked ligand storage pool (5) and a sample mixing region (13). The bottom plate comprises a filtering region (6), a magnetic particle coating region (7), a cleaning region (14), a detecting region (8), a cleaning fluid storage pool (9), a luminous substrate liquid storage pool (10) and a liquid release channel (16).

The invention relates to a magnetic particle direct chemiluminiscence microfluidic chip for whole blood sample testing. The chip is composed of a top adhesive tape (10), a chip substrate (1) and a bottom adhesive tape (13); the chip substrate comprises a filtering area (2), a coating area (3), a cleaning area (4), a testing area (5), a cleaning liquid storing pool (7), a luminescence substrate liquid storing pool (8) and a waste liquid pool (11), wherein the testing area is connected with the cleaning liquid storing pool and the luminescence substrate liquid storing pool through liquid releasing channels (9) respectively; the top adhesive tape comprises a sample feeding opening (11) and a cleaning liquid storing pool demising hole (12).

The invention discloses a magnetic particle chemiluminescence micro-fluidic chip used for whole-blood sample detection. The chip is composed of top adhesive tape (12), a chip substrate (1) and bottom adhesive tape (15), wherein a filtering area (2), a coating area (3), a reacting area (5), a cleaning area (6), a detecting area (7) and liquid release channels (8) on the chip substrate are sequentially connected, a marking ligand storage pool (4) on the chip substrate is connected with the reacting area (5), the detecting area (7) is connected with a cleaning liquid storage pool (9) and a light-emitting substrate liquid storage pool (10) through the liquid release channels (8), and the top adhesive tape comprises a sample adding port (13). Magnetic particle marking ligands are coated with the coating area (3). The marking ligand storage pool (4) is used for storing enzyme or light-emitting agent marking ligands.

The invention discloses a magnetic particulate chemiluminiscence micro-fluidic chip capable of quantitatively detecting brain natriuretic peptide (BNP) in whole blood. The micro-fluidic chip is composed of top adhesive tape (12), a chip substrate (1) and bottom adhesive tape (15), wherein a filtering zone (2), a magnetic particle tagged BNP antibody coating zone (3), a reaction zone (5), a cleaning zone (6), a detection zone (7) and a liquid release channel (8) which are arranged on the chip substrate (1) are sequentially connected; a tagged BNP antibody storage tank (4) on the chip substrate (11) is connected with the reaction zone (5), and the detection zone (7) is connected with a cleaning liquid storage tank (9) and a luminous substrate liquid storage tank (10) through the liquid release channel (8).

The invention is a kind of variable structure leg and wheel type detecting robot, which uses variable parallelepiped car body, uses electric engine to drive the car body to be widened or be narrowed; the invention uses running mechanism of leg and wheel transition, the four legs can extended fully, becomes foot walking detecting robot, the four legs can be folded according to a definitive method, it is deformed into wheel detecting car. The invention combines the deformation of the car, the change of car height and the inversion of the leg and wheel, it has several change modes. The invention combines deformable and height adjustable car, foot walking mechanism, wheel running mechanism.

The invention discloses a wireless laser pointer with an air mouse function. The wireless laser pointer comprises a shell, a mouse device and a laser pointer device, wherein the mouse device is arranged in the shell and comprises a measurement objective lens arranged at the front end of the shell, an image sensor arranged corresponding to the measurement objective lens, an image processor connected to the image sensor, a button matrix for inputting control information, a radio frequency emission controller connected with the image processor and the button matrix respectively and an emission antenna connected to the radio frequency emission controller; the laser pointer device is arranged in the shell and comprises a laser diode arranged at the front end of the shell and a collimation lens arranged in front of the laser diode; the button matrix comprises a laser button switch; and the laser diode is connected with the laser button switch and is controlled to be turned on / off through the laser button switch. The invention has the advantages that: the wireless laser pointer is not influenced by circuit noise, X-axis and Y-axis cross interference does not exist, and the like.

The invention relates to a road retained method for extrusion molding of waste rock, belonging to the technical field of mine exploitation and comprising the following steps of: (1) fixing a template beside the road to be retained, wherein the template is placed vertically and parallel to the road, faces to a goaf, and a certain distance is maintained between the template and the goaf to form an area to be filled; (2) smashing the waste rock into granules, adding cementitous materials to stir uniformly to form filler; (3) filling the filler in the area to be filled to form an infill; and (4) removing the template and moving the template along the work surface, and then entering the next filling circle. The invention realizes a retained road by using the waste rock as raw materials, changes waste material into things of value, and reduces discharging pollutants of waste rock; a rock bolt is added beside the road so that the stability of the retained road is increased; comprehensive mechanic operation is adopted, thereby the labor intensity is reduced and the efficiency is improved; opened operation is adopted, therefore, the problems of pipe blocking and the like are avoided and better reliability are achieved; the extraction and support for the retained road are free from cross interference and in great safe condition; and the obtained infill has great width, reasonable structure, low air leakage ratio and great reliability.

The invention provides a rotation-type milling force sensor for measuring torque and axial force. The rotation-type milling force sensor for measuring the torque and the axial force comprises a main body structure; the main body structure is connected with a protection shell; the protection shell is connected with a protection shell cover; the front end of the main body structure serves as a standard knife handle connecting port, the rear end of the main body structure serves as a standard knife tool clamping port, and a cage-type structure in the middle of the main body structure serves as an elastic component of the entire sensor; according to the cage-type structure, on the basis of a curved solid formed after an arc rotates a circle, four couples of gaps symmetrically and evenly distributed in pairs are incised out, so that the curved solid is incised into eight parts; four of the eight parts are each provided with a small platform; and semiconductor silicon strain gauges are pasted at the centers of the small platforms, wherein the semiconductor silicon strain gauges in the axial direction and in the direction perpendicular to the axial direction are connected into a Wheatstone full-bridge for measuring the axial force Fz, and the semiconductor silicon strain gauges which are pasted in the positive and negative 45 degree directions are connected into a Wheatstone full-bridge for measuring the torque T which is imposed on a knife tool in machining. The rotation-type milling force sensor for measuring the torque and the axial force has the advantages of being high in sensitivity, high in rigidity, low in cross interference, high in adaptability and the like.

The present invention discloses a magnetic particle chemiluminescent microfluidic chip for quantitatively detecting troponin I in whole blood. The microfluidic chip comprises a head plate (1) structure and a bottom plate (2) structure, and a gas pump (3), a sampling port (4), a sample filling area (12), a marked antibody storage pool (5) and a sample mixing region (13) on the head plate (1) are connected successively; a filtration zone (6), a magnetic particle coating region (7), a washing zone (14), a detection zone (8) and a liquid release channel (16) on the bottom plate are connected successively; the detection area (8) of the bottom plate is connected with a washing fluid storage pool (9) and a lighting substrate fluid storage pool (10) through the fluid release channel (16), respectively.

The invention discloses a novel multi-axis optical accelerometer which comprises a supporting structure, an elastic beam, a testing mass block, movable photonic crystal beams, fixed photonic crystal beams, connecting optical fibers, a variable optical attenuator, an optical fiber polarization controller, a balance optical detector and an electronic spectrum analyzer, wherein the testing mass block can respectively achieve acceleration signal detection on the X axis and the Y axis. Acceleration detection in the X axis direction and the Y axis direction is bidirectional acceleration detection only for the plane, and the detection is carried out by the testing mass block supported by a corresponding supporting structure. A corresponding detection edge of the testing mass block forms cavity-shaped structures by means of the silicon nitride photonic crystal beams manufactured through a micromachining process, and the crystal beam relative displacement changes produced by acceleration are converted into changes of detection optical signals. Photonic crystal cavities in different directions have no effect on acceleration signal detection in the directions. According to the optical accelerometer, the changes of the detection optical signals are converted into acceleration of a measurement carrier through a detection module, so the optical accelerator has the advantages of being high in measurement precision, resistant to electromagnetic interference, and the like.

The present invention discloses a magnetic particle chemiluminescent microfluidic chip for detecting creatine kinase isoenzyme in whole blood. The microfluidic chip comprises a head plate (1) structure and a bottom plate (2) structure, and a gas pump (3), a sampling port (4), a sample filling area (12), a marked antibody storage pool (5) and a sample mixing region (13) on the head plate (1) are connected successively; a filtration zone (6), a magnetic particle coating region (7), a washing zone (14), a detection zone (8) and a liquid release channel (16) on the bottom plate are connected successively; the detection area (8) of the bottom plate is connected with a washing fluid storage pool (9) and a lighting substrate fluid storage pool (10) through the fluid release channel (16), respectively.

The invention discloses a magnetic particle chemiluminiscence micro-fluidic chip for detecting the n-terminal portion of brain natriuretic peptide in whole blood. The micro-fluidic chip comprises a top plate (1) and a base plate (2), wherein an air pump (3), a sample adding port (4), a sample filling area (12), a labelled antibody storage pool (5) and a sample mixing area (13) on the top plate (1) are sequentially connected, a filtering area (6), a magnetic particle coating area (7), a cleaning area (14) and a detection area (8) on the base plate (2) are sequentially connected, and the detection area (8) on the base plate (2) is connected with a cleaning fluid storage pool (9) and a luminous substrate liquid storage pool (10) through a liquid releasing channel (16).

The invention discloses a sensor detection device for composite gas. The sensor detection device comprises a gas chamber main body, a gas chamber connector, a sensor group, a pin PCB and a signal processing PCB. The air chamber body is provided with a plurality of independent sensor set installation cavities so that the sensor sets can be isolated from one another, and the air inlet ends of the sensor set installation cavities are communicated with a public air cavity so that the sensors can detect air. A sealing ring is arranged at the joint of the air chamber connector and the air chamber body to form a sealing structure, a containing cavity is formed in the air chamber connector to contain the two PCBs, and a connecting part is arranged at the lower end of the air chamber body. The problems that a traditional all-in-one air chamber is large in size and complex in assembly are solved. Meanwhile, each sensor can make contact with air in a public air cavity area for detection. The problem that an air path of the traditional all-in-one air chamber is redundant is solved, cross interference during measurement of the sensors is avoided, and the T90 testing time of the sensors is greatly shortened.

The invention discloses automatic monitoring equipment for multi-strain water biotoxicity. The automatic monitoring equipment comprises a PCL unit, a man-machine interaction unit, a flow path control unit, an anabiosis preservation unit, a sampling quantifying unit and a reaction detection unit, wherein the PCL unit, the man-machine interaction unit, the flow path control unit, the anabiosis preservation unit, the sampling quantifying unit and the reaction detection unit are all arranged inside a frame; the PCL unit is connected with the man-machine interaction unit, the flow path control unit and the reaction detection unit; the flow path control unit is connected with the anabiosis preservation unit, the sampling quantifying unit and the reaction detection unit. The invention further discloses a monitoring method for the multi-strain water biotoxicity. The automatic monitoring equipment has the advantages of multi-strain applicability, whole-journey detection, high measurement precision, short measurement time, small bacterial liquid amount, no cross interference, small maintenance amount and the like, and requirements of on-line environment monitoring can be met.

The present invention discloses a fiber torsion sensor with high sensitivity and without temperature cross interference. The sensor comprises a first single mode fiber, a second single mode fiber, a first dislocation fusion point, a second dislocation fusion point, a first fine core fiber, a second fine core fiber and a taper fine core fiber. The connection point of dislocation fusion the first single mode fiber and the first fine core fiber forms a first dislocation fusion point. The two ends of the taper fine core fiber are respectively connected with the first fine core fiber and the second fine core fiber. The connection point of dislocation fusion the first fine core fiber and the second single mode fiber forms a second dislocation fusion point. When usage, the first single mode fiber is connected with a broadband light source, and the second single mode fiber is connected with a spectrograph; and the position and the intensity of the resonance wavelength on the spectrograph are monitored in real time to realize the high-sensitivity fiber torsion measurement without temperature cross interference. Compared to the prior art, the fiber torsion sensor with high sensitivity and without temperature cross interference can realize the measurement of the multiple physical parameters at the same time, is high in sensitivity, large in dynamic range, simple in structure, low in cost, and easy to integrate.

The invention discloses a multi-protocol data interaction method applied to an information control system of a launch vehicle. The method comprises the following steps: step 1: establishing connection of each network segment and a gateway unit correspondingly; step 2, monitoring whether data sent from each network segment exists through the gateway unit, if so, performing step 3, and if not, re-performing step 2; step 3, saving the data sent from each network segment; step 4, identifying a data ID and data flow information, and adjusting the format of the data; step 5, sending the formatted data out according to the data ID and the data flow information; and then returning to step 2. The multi-protocol data interaction method applied to the information control system of the launch vehicle avoids the phenomenon that the multi-network segment data can only be placed on the same network segment, so that the system architecture is clear, the data is free from cross interference, the real-time transmission effect is better, a user is provided with various options like field distributed control and remote control, and the modernization level of the information system of the launch vehicle is improved.

The invention discloses a method and device for designing a methane detection module based on a vertical cavity surface emitting laser device (VCSEL). The method includes the steps that a plurality oftemperature ranges are set in advance, and in each temperature range, the wavelength scanning range of the laser device covers at least two methane absorption peaks; according to the measured environment temperature, the methane absorption peak corresponding to the measured environment temperature range is automatically matched to measure the concentration of methane. Through close cooperation with a VCSEL supplier, the laser device (VCSEL) with performance indexes meeting the above requirements is screened out, and the methane absorption peak center wavelength and a laser parameter design scheme are automatically matched into the methane detection module precisely, so that the method for designing the newly designed methane detection module can effectively work in the environment temperature range between -20 DEG C and 60 DEG C.

The invention relates to the technical field of veterinary drugs, in particular to a vaccine of swine fever-porcine contagious pleuropneumoniae bivalent subunit and a preparation method and applications thereof. The vaccine comprises classical swine fever virus E2 protein, serum type-7 actinobacillus pleuropneumoniae toxin protein ApxII, serum type-1 actinobacillus pleuropneumoniae outer membraneprotein Oml and vaccine adjuvant. The vaccine is obtained by mixing and emulsifying the proteins and the vaccine adjuvant in equal volume. The vaccine can simultaneously prevent swine fever and porcine contagious pleuropneumoniae caused by serum type-1 and type-7 porcine actinobacillus pleuropneumoniae, and has good effect and low cost.

The invention discloses a quantitative detection kit for hepatitis B viral nucleic acid. The kit comprises a PCR reaction liquid 1, a PCR reaction liquid 2, DNA internal control, quantitative reference substances A, B, C and D, a strong positive quality control substance, a clinical positive quality control substance and a negative quality control substance. The PCR reaction liquid 1 contains upstream and downstream primers for amplifying polynucleotide of a target, a probe for detecting polynucleotide of the target, a DNA internal control primer and a probe, a PCR reaction buffer solution, dNTPs and an enzyme mixed solution. The kit is high in sensitivity (the lowest detection limit is 5IU / ml, wide in linear range (can cover 20-1.0E+09IU / ml), high in specificity (a pair of primers is designed for an S region sequence of a conservative fragment and does not interfere with other pathogens in a crossed manner), high in amplifying efficiency (the spatial conformation of double functionalenzyme is stabilized by adding an enzyme protecting solution and the activity is enhanced), quick to detect (the whole detection process is finished within 50 min) and convenient to store and transport and free of freezing and repeated freeze-thawing, so that the using convenience of a user is improved.

The invention discloses a kit for detecting human cytomegalovirus. The kit comprises specific PCR primers and a fluorescent probe for detecting human cytomegalovirus DNAs, specific primers and a probefor detecting a DNA internal standard, a PCR reaction buffer, a mixed enzyme liquid, theDNA internal standard, a negative control, a strongly positive control, a weakly positive control and quantitative references A, B, C and D; wherein the sequences of the primers and the probes are as shown in SEQ ID No. 1-6. The kit of the invention has the advantages of convenient and quick detection, capacity of quantitatively detecting human cytomegalovirus within 20 min, high sensitivity, the lowest detection limit of 34.5 IU / ml, and good specificity. According to the invention, a pair of primers are designed according to the internal repetitive sequence [mu]l65, so the primers have no cross-interference with other pathogens and have high specificity. The kit of the invention can be traced to the World Health Organization (WHO) standard unit IU / mL; quantitative results have traceability; and the kit has high reference value for clinical diagnosis of diseases related to human cytomegalovirus andis suitable for promotion and application.

The invention discloses a paste filling fully-mechanized coal mining device for a support matching template. The device comprises a telescopic support and an automatic filling template, the automatic filling template is positioned behind the telescopic hydraulic support, the telescopic support comprises a main support base and an auxiliary support base, both the main support base and the auxiliary support base are of an integrated box-type structure, a first hydraulic support column is vertically arranged on the main support base, and a second hydraulic support column is vertically arranged on the auxiliary support base. The telescopic six-column supporting hydraulic support matching self-moving filling template is researched and developed according to a paste filling working surface of a thin coal seam, coal mining and filling are simultaneously operated, and processes such as 'mining, supporting, moving and filling' are mechanized and integrated.

The invention provides a colloidal gold test paper for novel coronavirus as well as a preparation method and application of the colloidal gold test paper. The kit provided by the invention is high in detection positive coincidence rate. A gold-labeled conjugate pad is respectively labeled by S protein and N protein of the novel coronavirus, an IgM antibody and an IgG antibody aiming at the S protein of the novel coronavirus and an IgM antibody and an IgG antibody aiming at the N protein of the novel coronavirus in a sample can be simultaneously identified; and meanwhile, the pH value of the S protein gold label is 7.5+ / -0.5, and the gold-labeled S protein is uniformly paved on the conjugate pad; the pH value of the N protein gold label is 9.5+ / -0.5, and the gold-labeled N protein is sprayed on the conjugate pad by adopting a gold spraying film scratching instrument; colloidal gold particles are fired by adopting a spherical bottle and a digital display jacket type magnetic stirrer in a differentiated gold labeling and treatment mode for the S protein and the N protein, and a surfactant lauryl polyoxyethylene ether sodium sulfate is added into a buffer solution 1 and a buffer solution 2, so that the detection sensitivity can be greatly improved, and the overall detection efficiency is improved.

The invention provides a labeling pad used for multi-channel immunochromatography, a production method, and a detection reagent card. Preset positions on the labeling pad are spray-coated with a hydrophobic material to form hydrophobic intervals, thereby forming a plurality of chromatography labeling channels on the labeling pad. The adjacent chromatography labeling channels are separated by the hydrophobic intervals, so that when a to-be-tested sample needs to mark, different labeled antibodies can be labeled by the adjacent chromatography labeling channels without cross interference, and accuracy of detection results is guaranteed. The detection reagent card allows simultaneous multi-channel detection to the to-be-tested sample without cross interference on the adjacent channels, so thataccuracy of detection results is high. During production, compared with a conventional multi-channel united card, the detection reagent card is free of separate design of independent mono-channel test paper strips, so that the production method is simple and is greatly reduced in required raw materials, so that product cost is easy to control, sample addition time is reduced and operations are more convenient.

The invention discloses aprecast beam top platelinear control construction method. The method is suitable for bridge precastwith flange plates such as T beams and box beams. The method has the characteristics that (1) devices such as precast beam plane linear adjustment and beam top cross slope adjustment scales are easy to machine and convenient to install; (2) the beam top cross slope adjustmentscale device is more convenient and safer compared with a traditional method for measuring and adjusting the beam top cross slope through a level gauge, and the construction measuring cost is reduced;(3) the operation is simple, convenient and fast, the template control precision is high, the linear quality of the precast beam top plate can be greatly improved, and the cross interference with thetemplate installation construction is avoided; and (4) the quality problems that the precast beams intrude into a bridge deck pavement structure layer, the widths of joints between the precast beamsof adjacent bridge spans are different, bridge side lines do not meet the design line shape requirements and the like due to insufficient linear control of the precast beam top plate can be effectively prevented, and the bridge structure safety risk caused by the quality problems is reduced.

The invention relates to the technical field of energy conservation and environmental protection, and discloses an environment-friendly dust removal fog gun machine and a using method thereof. The environment-friendly dust removal fog gun machine comprises a machine base, wherein a rotating shaft is movably installed in the middle of the top of the machine base, supports connected with the rotating shaft in a sleeving mode are movably installed on the two sides of the top of the machine base, a gun barrel is movably installed between the inner sides of the tops of the supports, an atomizing head is fixedly installed on the front face of the gun barrel, an annular groove is formed in the inner ring of the atomizing head, a spray head is fixedly installed in the annular groove, flow blocking heads are movably installed on the two sides of the top of the spray head, a water outlet hole communicating with a spray water supply hole is formed in the middle of the spray head, a movable groove is formed in the outer side of the spray head, a fixed column is fixedly installed in the middle of the movable groove, the outer ring of the fixed column is movably sleeved with a movable sleeve ball, a pressure hole is formed in the position, located at the bottom of the movable groove, of the interior of the spray head, and through the design of the annular groove and the spray head, the atomization effect and the dust removal efficiency of the fog gun are improved.

The invention relates to a two-bus multi-loop fire-fighting broadcasting system which comprises a fire alarm controller, a fire-fighting emergency broadcasting host and an audio power amplifier whichare in communication connection in sequence. A plurality of PLC modems A are arranged on the audio power amplifier. The PLC modems A are in communication connection with one or more paths of addressing loudspeakers. The PLC modems A are in communication connection with PLC modems B on the addressing loudspeakers. The addressing loudspeakers are connected with one or more loudspeakers. By adoptingthe technical scheme of the invention, the limitation on the number of addressing loudspeakers can be broken through, the condition of cross interference does not occur when the two PLC communicationcircuits and the loop connecting lines thereof are close to each other, and the communication stability is good.

The invention belongs to the technical field of new energy hydrogen safety monitoring, in particular to a positionable hydrogen measuring method based on single-photon counting. A fiber laser radar, an acoustic optical modulator (AOM) for controlling the intensity change of a laser beam, and a sensing fiber installed at the output end of the AOM are provided. The acoustic optical modulator (AOM) is injected into the sensing optical fiber through a circulator, and the output end of the circulator is provided with a single-photon photoelectric detector (SPD) used for receiving scattered light. The hydrogen concentration monitoring structure adopted by the invention can realize multi-point and multi-area hydrogen leakage and diffusion detection at the same time, the positionable function is realized, a detection mode of combining single-photon counting with lock-in amplification is adopted, noise detection can reach a thermal noise level; the sensor is a plastic optical fiber, and is simple in structure, low in cost and convenient to operate, and is uncharged, intrinsically safe and particularly suitable for flammable and combustible environments of hydrogen detection,

The invention discloses a pavement voice prompting device which comprises a voice prompting device. The pavement voice prompting device is characterized in that the pavement voice prompting device ismounted in a pressing-preventing housing device; the pressing-preventing housing device comprises a base board and a housing which is connected with the base board; the housing is provided with an accommodating chamber, a cable hole and a sound hole at least; the pavement voice prompting device is mounted in the accommodating chamber of the housing, and the cable penetrates through the cable hole;and the pressing-preventing housing device is mounted on the pavement or embedded into the pavement. The pavement voice prompting device is advantageous in that the pavement voice prompting devices are mainly mounted at two ends of a zebra crossing; the passengers are reminded of safely crossing the pavement in a voice broadcasting manner, thereby reducing behaviors of pavement crossing disorderly and walking on the condition of red lamp. Furthermore the pavement voice prompting device is mounted on ground, and interference between broadcast voices.

The invention provides a centrifugal reagent disk. The centrifugal reagent disk comprises a substrate, wherein the substrate is provided with a rotating center and comprises at least one group of testunits, each test unit comprises at least two cavities and a weir structure arranged between the adjacent cavities, and a valve is arranged on each weir structure; the distances from the cavities to the rotation center are not equal, the cavity close to the rotation center is a near-end cavity, the cavity far away from the rotation center is a far-end cavity, and when the rotation speed of the substrate reaches a preset rotation speed, the valves are opened and the reagent in the near-end cavity is released into the adjacent far-end cavity. The centrifugal reagent disk for pre-embedding reagents can pre-embed various liquid reagents and solid reagents at the same time, can enable the pre-embedded reagents to be released, re-dissolved and / or reacted according to a certain sequence, and hasthe advantages of a simple structure, easiness in implementation, low manufacturing cost and the like.

The invention discloses a filler leakage protection gas distribution station of a reciprocating piston type compressor and relates to the gas distribution station for protecting safe operation of the reciprocating piston type compressor. The gas distribution comprises a chassis, support poles, and a gas collection tank, wherein the chassis is fixed on the ground; the support poles are arranged at the rear end of the chassis; the lower end of each support pole is connected on the chassis; a pallet is arranged at the upper end of each support pole; the gas collection tank is arranged on the pallet and is partitioned into a left zone, a middle zone and a right zone; a second ball valve is connected at the upper end of each zone; two second ball valves of the middle zone are connected with a floater flow meter; a first seamless steel pipe, which is vertically arranged, is separately connected with the lower end of each zone; a long-radius elbow, a second seamless steel pipe, a reducing valve and a third seamless steel pipe are connected with the other ends of the three seamless steel pipes in sequence; the other end of the third seamless steel pipe is connected with the outlet end of the first ball valve through a flange; the inlet end of the first ball valve is connected with a nitrogen gas source; and the third seamless steel pipe is fixed on a support which is fixed on the chassis and the second and third seamless steel pipes are horizontally arranged.