64results about How to "Achieve accurate metering" patented technology

The invention discloses a ton bag feeding device and a feeding method. The device comprises a support device, a ton bag clamping turnover mechanism, a turnover motive power mechanism, a material collection hopper, a belt weigher and a vacuum absorption device. The method comprises the following steps: putting ton bag packed material into a turnover cage, hanging lifting lugs of the ton bag on ton bag hooks, compressing a vacuum sucker to be clung to the bottom of the ton bag, starting a vacuum pumping device, and absorbing the ton bag by the vacuum sucker; starting a motor, overturning the turnover cage, flowing the material in the ton bag into the material collection hopper, enabling the ton bag to be absorbed due to the absorbing force of the vacuum sucker, and dropping the material gradually until all material in the ton bag is poured out; rotating the turnover cage in an opposite direction, closing the vacuum pumping device, and taking the ton bag down. The device and the method can realize mechanized operation to clean up once; no manual assistance is needed; accurate measuring and delivering of the material are realized; the vacuum sucker adopts an elastic structure; the service life is long; the equipment is simple, and 360 degrees overturning of the ton bag can be realized; the method is suitable for the discharging and the delivering of various ton bag packed material, especially particles and powdery material.

The invention relates to a deposition and water level monitor and an application method thereof and belongs to the technical field of underwater deposition automatic monitoring in the water conservancy industry. According to the technical scheme, the deposition and water level monitor comprises a monitoring host (6) and a deposition and water level sensor (8), the deposition and water level sensor is in a strip shape, and a plurality of electrodes (7) are distributed in the length direction. The strip-shaped deposition and water level sensor is vertically and downwards arranged in the length direction, and the capacitance value of each electrode is measured; the deposition thickness is obtained in real time according to different capacitance values of all the electrodes and intervals between every two electrodes. By means of the deposition and water level monitor and the application method thereof, the water level and decomposition can be monitored at the same time, water surface and water bottom can be monitored at the same time, the decomposition thickness and the water level height can be monitored for a long time without manual intervention, then deposition rules of sludge and water level change situations are analyzed, and storage capacity or water flow is measured. The deposition and water level monitor and the application method thereof are high in accuracy, high in real-time performance, easy to arrange and small in later-period maintenance amount.

The invention discloses a small automatic titration device applied to an analysis instrument. The automatic titration device comprises a titration pool of which the bottom is provided with a unique liquid inlet and outlet opening, an electromagnetic stirring mechanism with a central through hole, an inlet and outlet liquid metering system, a fastening mechanism, a titration endpoint monitoring device and a control and calculation unit. The device can be applied to photometric titration and potentiometric titration, is easy to install and has relatively low cost. The invention also provides a method for titrating by using the automatic titration device and calculating the volume of consumed titrated liquid.

The invention discloses an experimental system combining a high-temperature and high-pressure reaction system and a Raman spectra analyzer. The experimental system comprises a high-temperature and high-pressure reaction kettle system, a gas sampling system, a liquid sampling system and a Raman spectra analysis system. By fully utilizing the characteristics of Raman spectra, a chemical reaction product is quantitatively and qualitatively analyzed, and the basis is provided for research on reaction kinetics. The experimental system combining the high-temperature and high-pressure reaction system and the Raman spectra analyzer can be widely applied to the field of chemical engineering, environmental engineering and mineral processing technology research.

The invention relates to monitoring equipment of intermittent flows. The monitoring equipment comprises a water inlet pipe, a measuring tank and a draining pipe. A tipping bucket is disposed in the measuring tank. The tipping bucket comprises a container for receiving liquid flowing out of the water inlet pipe and a hinge connecting the container with the measuring tank. The empty mass center of the empty container is located on one side of the hinge. The empty mass center allows the container to keep horizontal. The full mass center of the full container is located on the other side of the hinge. The full mass center allows the tipping bucket to incline and turn over. The tipping bucket further comprises a counter for recording the inclining and turning over times of the container. The monitoring equipment has the advantages that tipping bucket measuring is used, intermittent flow measuring which cannot be continuously performed is changed into measuring of the inclining and turning over times of the tipping bucket, and precise sewage measuring is achieved; the measuring of the inclining and turning over times of the tipping bucket can be easily digitalized, so that sewage amount calculation is quite convenient and accurate; due to the fact that the tipping bucket is of a quite simple mechanical structure, fault probability is reduced, and the problem of impurity blocking can be well avoided.

The invention belongs to the technical field of environmental monitoring, and relates to a dual-channel gas state mercury exhaust gas sampling system. The dual-channel gas stage mercury exhaust gas sampling system comprises a sampling gun, a heat tracing pipeline and a sampling host machine, wherein two sampling pipes can be installed on the sampling gun. A water removal device and an acid removal device are sequentially connected between the heat tracing pipeline and the sampling host machine. The sampling host machine comprises a sampling pump, a flow control valve used for regulating sampling flow, and a gas flow metering device, wherein the sampling pump, the flow control valve and the gas flow metering device are communicated through pipelines. Vacuum degree control valves are connected at two ends of the sampling pump in a parallel mode. The gas flow metering device comprises a dry-type gas flow meter, a rotary coder and a counter, wherein the rotary coder is fixed on a transmission shaft of a counting plate of the dry-type gas flow meter, a signal output by the rotary coder is sent to the counter, and the counter measures volume of gas according to the output signal of the rotary coder. According to the dual-channel gas state mercury exhaust gas sampling system, accurate measurement of gas flow can be achieved and the sampling pipes can be effectively protected.

The invention relates to a vehicle for mine transportation. A hydraulic control device is arranged in a vehicle head. The four sides of a compartment are each provided with a movable baffle. Three hydraulic cylinders are connected to the lower surface of each movable baffle and used for driving the movable baffle to move up and down. A protective shovel is arranged in front of the lower portion of the vehicle head. The vehicle for mine transportation has the beneficial effects that 1, through the design of the protective shovel, the condition of the road surface on which the tuck advances is improved, loss of tires of the truck is reduced, transportation cost is reduced, the workload of a bulldozer in the workplaces such as mining and excavating work face and a refuse dump is reduced, the road maintenance workload is reduced relatively, and working intensity is also relieved relatively; 2, through the lifting baffles which can be adjusted continuously, accurate metering of materials is achieved, the volume of a hopper can be changed in a stepless mode according to production requirements and can be increased, the load carrying capacity of the truck is fully used, transportation efficiency is improved, transportation cost is reduced, and meanwhile the situation that ore materials scatter due to bumpy traveling is avoided.

The invention relates to a system and method for continuously sampling and measuring runoff and sediment in a soil and water conservation monitoring area. The system comprises a sampling subsystem, a measuring subsystem, a sample storage subsystem, a control subsystem, a power supply subsystem, a cleaning subsystem, a rainfall sensor and a plurality of sampling buckets, wherein the sampling subsystem, the measuring subsystem, the sample storage subsystem, the control subsystem, the power supply subsystem, the cleaning subsystem and the rainfall sensor are mounted in a box body with shutters on four surfaces; the plurality of sampling buckets surround an annular sampling track capable of intermittent rotation according to the water condition; the sampling buckets are connected with the annular sampling track through an automatic unlocking mechanism. The system and the method provided by the invention have the benefits that as a whole set of sampling buckets capable of being automatically recycled are arranged, the sampling buckets constantly sample the runoff generated in the area through the annular sampling track and record the sampling frequency; moreover, each sampling is accurately measured through the measuring subsystem, completely-unmanned automatic sampling and automatic measurement are realized, the field workload of scientific researchers is greatly reduced, and the labor and the use cost are saved.

The invention discloses a wide-range photoelectric direct-reading water meter which comprises a counter, a gear box (7), an impeller and an impeller box (1). The gear box (7) is mounted on the top of the impeller box (1), eight water inlets (3) are arranged at the bottom of the impeller box (1), four water outlets (4) are arranged on the top of the impeller box (1), four to six decelerating stems A (9) are arranged on a bottom surface A (8) of the gear box (7), and six to eight decelerating stems B (6) are arranged on a bottom surface B (5) of a cavity (2) of the impeller box (1). The wide-range photoelectric direct-reading water meter has the advantages that the rotational speed of the impeller is regulated by the decelerating stems B and the decelerating stems A when the impeller is impacted by water flow to rotate, various flow points are precisely metered, so that low flow can be metered, Q3 / Q1 ratio can be higher than 160, and counting precision of the water meter is improved.

The invention provides a CO2 flooding crude oil separation foamability testing device and method. The device comprises a CO2 flooding crude oil pre-configuration module and a foaming simulation module. The CO2 flooding crude oil pre-configuration module includes a first piston pressure vessel, the lower part in the container is a CO2 and crude oil mixing space, the bottom is connected to a CO2 injection apparatus and a crude oil injection apparatus, the upper part is a pressure control space, and the top is connected to a pressure gas injection apparatus. The foaming simulation module includes a second piston pressure vessel, one end inside is a CO2-containing crude oil foaming simulation space communicated with the lower space of the first piston pressure vessel, and the other end is a pressure control space. The device and method provided by the invention can simulate CO2 solubility, CO2 flooding crude oil decompression foaming, flow decompression foaming, foaming capacity and foam stability testing.

The invention discloses a water distribution method and device based on omni-channel transmission and distribution and computer equipment, and the method comprises the steps: collecting the current water level information of a target region and the initial door opening information of each channel; according to the current water level information and the initial door opening information of each stage of channel, adjusting door opening information of each stage of channel gate in the target area is determined; and water resources are transmitted and distributed to the target area according to the door opening adjustment information. By implementing the method and the device, the problem that water resources in the irrigation area are seriously wasted due to the fact that the irrigation area cannot be automatically controlled in the prior art is solved. The current water level information of the target area and the initial door opening information of each channel are combined, the door opening adjustment information of each channel is determined, automatic management and real-time control of the irrigation area and accurate metering of irrigation area water can be achieved, the utilization efficiency of irrigation water is effectively improved, and the management level of irrigation area water is improved.

The invention belongs to the technical field of medical instruments and provides a liquid taking and separating device. The liquid taking and separating device comprises a negative pressure generator,a diverter, a catheter, a puncture needle and containers, wherein the negative pressure generator is sequentially connected with the diverter, the catheter and the puncture needle, and a valve is arranged on the diverter; when liquid is sucked, the valve enables the negative pressure generator and the puncture needle to be communicated, the connection between the negative pressure generator and the containers is cut off, and the liquid is stored in the negative pressure generator; after the suction is completed, the valve enables the negative pressure generator and the containers to be communicated, and the connection between the negative pressure generator and the puncture needle is cut off; the diverter includes more than two branch outlets for diverting liquid into two or more containers. The liquid taking and separating device has the advantages that the liquid taking and separating device can suck a large amount of amniotic fluid at a time by using the negative pressure generatorto realize multiple times of liquid separation, and the time of exposing a fetus to the puncture needle is shortened.

The invention relates to a pull-out guide (1) for furniture, comprising a guide rail (2) that can be installed on a furniture body and at least one sliding rail (3, 4) that is supported on the guide rail (2) through rolling elements (5) such that said sliding rail can be moved, wherein the rolling elements (5) are supported in a rolling element cage (6, 10, 20, 30) that is made at least partially of a material containing a lubricant. Thus, the lubricant can be precisely metered over a long period of time. Furthermore, the rolling element cage is formed in a production method at least partially by a porous body that is impregnated with a lubricant.

The invention relates to powder conveying, in particular to a powder conveying system. The powder conveying system comprises a feeding bucket, a gear pump, a mixer, a conveying pipeline, a material collecting bucket and a dust removing device, wherein the feeding bucket, the gear pump, the mixer, the conveying pipeline and the material collecting bucket are sequentially connected; the feeding bucket is connected with the material inlet end of the gear pump; the gear pump comprises a housing, an engaging gear set and a power source; the engaging gear set is arranged in the housing, and comprises two gears which are engaged to each other; the two gears are rotationally connected with the housing; when the engaging gear sets is rotated, two adjacent teeth on the same gear can be circulated to be matched with the housing to form a powder conveying chamber; a compressed air inlet is arranged on the mixer; and the dust removing device is arranged at the top of the material collecting bucket. According to the powder conveying system provided by the invention, the gear pump is used for rotationally feeding materials and synchronously separating; and the compressed air serves as the power; thus, the powder can be conveyed under a closed environment, and cannot be diffused into the atmosphere.

The invention discloses a metering irrigation device based on water requirement of crops. The device comprises a water storage tank and a mixing box; the top wall of the mixing box is provided with amotor, a screw feeder, a chemical fertilizer melting tank, a feeding hopper and a water pump with high lift and high flow rate; the outlet section of the feeding hopper extends into the mixing tank, and a flow meter is arranged at the outlet section; the water inlet end of the water pump is connected with a first water inlet pipe extending to the middle and lower part of the purification tank, andthe first water inlet pipe is connected with a second water inlet pipe; the water outlet end of the water pump is connected with a main water delivery pipe through a first water outlet pipe; the connection part of the first water outlet pipe with a sedimentation box and the connection part of the main water delivery pipe with the sedimentation box are both provided with a flow meter; two side surfaces and the top surface of the main water delivery pipe are all provided with water outlet holes; the water outlet on the top of the main water delivery pipe is connected with a water spraying pipe;and the two sides of the main water delivery pipe are connected with burettes, and the bottom surface of each burette is provided with a dripping hole. The irrigation device can realize watering, fertilizing and pesticide spraying, and can accurately measure the total amount of a solution flowing into the main water delivery pipe.

The invention provides an online accurate measuring device and an online accurate measuring method for fluid flow, which relate to fluid flow measuring technology. The online accurate measuring device is composed of a left flange, a right flange, a measuring pipe, a multifunctional board, and a temperature detecting and signal transmitting device. The left flange is fixedly communicated with the right flange through the measuring pipe. The multifunctional board is fixed at the front part in the measuring pipe, and a V-shaped cone assembly is arranged at the back part in the measuring pipe. The outside of the measuring pipe is communicated with two pressure guiding pipes. The ends of the two pressure guiding pipes are communicated with a coplanar three-valve set. The coplanar three-valve set is provided with a multi-parameter transmitter. The multi-parameter transmitter is connected with the temperature detecting and signal transmitting device in the measuring pipe through line connection. The online accurate measuring device for the fluid flow has advantages of simple structure, stable signal, small pressure loss, small length of required straight pipe segment, etc. The online accurate measuring device and the online accurate measuring method belong to the field of a differential pressure type flowmeter. The online accurate measuring device has inherent characteristics of all differential pressure type flowmeters. The flow of the measured medium is in proportion to the square root of the differential pressure. The online accurate measuring device and the online accurate measuring method realize safe and accurate online measurement for the fluid flow.

The invention discloses a material monitoring system mainly comprising a hopper, a conveyer belt, ray detectors, a weighing device and a solver, wherein the ray detectors are distributed at the upper and lower parts of the conveyer belt or on two sides thereof; the weighing device is located at the lower part of the conveyer belt; and the signal output terminals of the ray detectors and the weighing device are connected with the signal input terminal of the solver via data wires. Accordingly, the monitoring system is capable of discriminating the components of the material by the ray detectors, weighing the materials by the weighing device and respectively recording the conveying capacities of different materials according to two groups of measurement signals and outputting the data though the wired or wireless network by the solver, thereby avoiding the artificial interference and achieving the accurate measurement of the materials.

The invention relates to a belt type steering loader belonging to the technical field of mechanical manufacturing. A supporting spindle is arranged in the centre of a base counterweight chassis, a spindle and a swinging arm are in a shaft and bearing pressing-down type inserting structure, the swinging arm comprises an inner swinging arm and an outer swing arm, a gear set is arranged between the inner swinging arm and the outer swinging arm, wherein the outer swinging arm is connected with a main rotating arm by a vertical shaft, the rear end of the main rotating arm is connected with a rear rotating arm by adopting a movable joint, the front end of the main rotating arm is connected with a front rotating arm by adopting a movable joint, a rear-end connection point of the rear rotating arm is provided with a rear transporting arm and a two-stage transporting arm, a three-stage transporting arm is arranged above the main rotating arm, a front-end connection point of the front rotating arm is provided with a four-stage transporting arm and a front transporting arm to form a graded combined type transporting arm, and a power control system adopts a plurality of AC electric rollers and a hydraulic power pack and is controlled by a remote-control unit through a control panel. The belt type steering loader is provided with the gear set and the movable joints, and the transporting arms are combined in grades in order to realize the positioning steering of the front and the rear transporting arms and the omnibearing loading and unloading arrangement of cargoes in a carriage.

The invention discloses a nuclear power plant waste solidification treatment system and a treatment method. According to prior arts, a weight metering method is adopted, system equipment complication is high, mounting difficulty is high, debugging, operation and maintenance are difficult, and a weighing unit has risks of weight deviation and measurement failure. With the system and method provided by the invention, the above technical problems are solved. The system comprises a waste collection unit (1), a waste volume metering unit (2), a waste delivery pipe (3), a valve assembly (4), a control unit (5) and a waste solidification unit (6). The control unit (5) acquires waste volume from the waste volume metering unit (2), and controls the open / close state of the valve of the valve assembly (4) based on the waste volume, such that the waste volume metering unit (2) acquires and temporarily stores a preset volume of nuclear plant waste for solidification during each waste solidification link. Therefore, waste precise metering and solidification under a measurement mode with no weighing unit is realized.

The invention discloses a method for calculating the excavation amount of a complex-form soil material field, which comprises the following steps of (1) setting a plurality of scanning stations according to the topographic condition of an excavation surface of the soil material field and the size of the excavation surface, and scanning the forms of the excavation surface before and after excavation of an excavation area of the soil material field; (2) carrying out point cloud registration on the coordinate system of the point cloud data obtained by scanning so as to convert the coordinates of the point cloud data into the same coordinate system; (3) analyzing the registered data, establishing a point cloud data compression method based on a hypergeometric space sphere, and performing the bidirectional compression on the registered point cloud data to reduce the data redundancy; (4) extracting the internal data of the excavation area from the compressed data, and deleting the data outside the excavation area; and (5) according to the extracted point cloud data before and after the excavation of the excavation area, calculating the excavation square amount of the soil material field. By means of the method, the efficient processing of the point cloud data of the excavation face of the complex-form soil material field and the rapid and accurate metering of the excavation square amount of the material field are achieved.

The invention discloses a high-precision oil three-phase automatic metering device. Through the separation function of an overflow cup, a separating umbrella and overflow holes at four sides beneath the separating umbrella, the gas and fluid separation can be fully performed on oil well output liquid, the separating effect is good, and separated gas is metered; a liquid level meter, a force measuring sensor, an electromagnetic valve and a measurement and control circuit can accurately meter oil and water under the condition of not separating; the metering device is compact and simple in structure; the sensor and the measurement and control circuit are easy to realize, and cost is low; the metering device is high in degree of automation, safe and reliable. The high-precision oil three-phase automatic metering device can be directly accessed to a 'digital oilfield system' constructed at present, so as to monitor the output of the production oil well precisely in real time. Compared with the prior art, the high-precision oil three-phase automatic metering device is compact and simple in structure; the metering device is high in degree of automation, safe and reliable; the metering device can be directly accessed to a 'digital oilfield system' constructed at present, so as to monitor the output of the production oil well precisely in real time.

The invention provides an automatic titration apparatus for an analytical instrument. The automatic titration apparatus comprises an electromagnetic stirring device, a feeding and discharging liquid metering system, a fastening mechanism, a titration end point monitoring device and a controlling and calculating unit, wherein the electromagnetic stirring device has only one liquid feeding and discharging opening in the bottom and is provided with a central through hole. The apparatus can be used for photometric titration and potentiometric titration, and is simple to install and low in cost.

The invention discloses an electronic sensing type high-voltage metering device and remote testing system. The electronic sensing type high-voltage metering device and remote testing system comprises a voltage sensor, a current sensor, an optical fiber transmission system, a merging unit, a remote testing system and a digitalized electric energy metering device, wherein the secondary outputs of the voltage sensor and the current sensor are digital optical pulse signals which are transmitted to the merging unit through the optical fiber transmission system; optical fiber signals output by the voltage sensor and the current sensor are merged and then are transmitted to the digitalized electric energy metering device through an optical cable; the digitalized electric energy metering device is connected with the remote testing system. The electronic sensing type high-voltage metering device and remote testing system has the beneficial effects that the optical fiber signals output by all the sensors are merged on the side of the sensors and are transmitted to the digital electric energy metering device through the optical cable, a secondary signal transmission loop is simplified, and the site construction workload is greatly reduced.

The invention relates to a continuous runoff and sediment sampling and measuring system and method used in an indoor soil-bin test. The continuous runoff and sediment sampling and measuring system comprises a sampling subsystem, a measuring subsystem, a sample storing subsystem, a control subsystem, a power supply subsystem and a cleaning subsystem, wherein the sampling subsystem comprises a plurality of sampling barrels which are arranged around an annular crawler belt intermittently rotating according to the water intake condition; the sampling barrels are connected with the annular crawler belt through automatic unlocking mechanisms. Through the sampling barrels driven by the annular crawler belt, runoff generated in a soil bin is continuously sampled and the sampling times is recorded, and by using the measuring subsystem, each sample is accurately measured, so that fully-unattended automatic sampling and automatic measurement are achieved; through accurate measurement of the sampling time and accurate weighing of water and sediment in each sampling barrel, full-automatic accurate measurement of the runoff in the soil bin is achieved.

The invention relates to a device and a method for quantitatively taking liquid seasonings. The device is characterized by being formed by three relatively-independent parts, namely a liquid storage device, a liquid taking device and a liquid flow switch-off control mechanism, wherein the liquid storage device and the liquid taking device are assembled into a whole; the liquid storage device is positioned above the liquid taking device and is communicated with the liquid taking device; a liquid outlet is formed in the lower part of the liquid taking device; liquid can flow out through the liquid outlet; the liquid flow switch-off control mechanism is used for controlling the switching on and off of a communicating opening between the liquid storage device and the liquid taking device and controlling the opening and the closing of the liquid outlet in the bottom part of the liquid taking device; liquid capacity scales are marked on the surface of the liquid taking device. During liquid taking, the communicating opening between the liquid storage device and the liquid taking device is switched off by the liquid flow switch-off control mechanism, the liquid outlet in the lower part of the liquid taking device is opened, the liquid flows out from the liquid taking device, and the liquid taking volume can be determined through the liquid capacity scales marked on the surface of the liquid taking device; when the liquid outlet in the bottom part of the liquid taking device is closed by the liquid flow switch-off control mechanism, the communicating opening between the liquid storage device and the liquid taking device can be opened, the liquid taking device is fully filled with the liquid again, and liquid taking is completed.

The invention discloses a method and a device for measuring the gas production rate of natural gas hydrate exploitation. The method comprises the following steps: introducing methane gas generated bythe natural gas hydrate exploitation into a tank body with a relatively high liquid level; discharging water replaced by the methane gas into the tank body with a relatively low liquid level through awater discharging pipeline, and meanwhile, carrying out gas discharging and pressure reduction on the tank body with the relatively low liquid level; when the pressure of the measuring device reachesthe set pressure safety upper limit or the liquid level falls to the set liquid level safety lower limit, triggering a tank reversing mechanism, wherein the process is a one-time gas drainage process, and at the moment, due to the fact that the liquid levels of the two tank bodies are interchanged, the gas drainage direction and the water drainage direction of the two tank bodies are interchanged: the gas drainage process is repeated until the methane gas generated by natural gas hydrate exploitation is completely subjected to the gas drainage process. According to the method and the device,the natural gas hydrate exploitation gas production rate is safely and accurately metered, and certain guiding significance is achieved for the natural gas hydrate exploitation.

The invention relates to an earth moving truck for mining production. A hydraulic control device is arranged in a truck head. The four sides of a compartment are each provided with a movable baffle. The lower portion of each movable baffle is connected with three hydraulic cylinders used for driving the movable baffles to move up and down. A push shovel structure is arranged at the front lower portion of the truck head. The earth moving truck for mining production has the beneficial effects that through design of the push shovel structure, the condition of a pavement on which the truck runs is improved, wear to tires of the truck is reduced, the transportation cost is reduced, the workload of a bulldozer is reduced on operating places such as loading and heading face and a waste dump, the road maintenance workload is reduced relatively, and the work intensity is relieved relatively.

The invention discloses an underground personnel positioning system for mine safety. The underground personnel positioning system comprises a bracelet, a geomagnetic sensor disposed in the bracelet, a three-dimensional attitude sensor and an intelligent control terminal which achieves the wireless communication with the bracelet. The intelligent control terminal is used for driving a corresponding person model to move in a constructed mine three-dimensional model according to received data acquired by the three-dimensional attitude sensor, the position of the underground person is calculated according to the data acquired by the geomagnetic sensor and the three-dimensional attitude sensor, and the underground personnel distribution and the number of personnel are accurately metered; and meanwhile, when accidental communication interruption occurs, the position of the person model at a certain time point can be obtained in a script playback mode, so that the search and rescue range is reduced. A mine three-dimensional model is constructed based on a design drawing of a mine, and a corresponding figure model is driven to move in the constructed mine three-dimensional model according to received data acquired by the three-dimensional attitude sensor, so that the position visualization of mine personnel is realized.

The invention discloses an elevator load testing machine and relates to the technical field of elevator detection. The problems that time and labor are wasted and labor cost is high when a load test is conducted on an elevator are solved. The elevator load testing machine is technically characterized in that the elevator load testing machine comprises a first water storage device, an electromagnetic valve, a water pipe, a flow meter, a water pump, a second water storage device and a microcomputer controller, the first water storage device, the electromagnetic valve, the flow meter, the water pump and the second water storage device are sequentially connected through the water pipe, and the electromagnetic valve, the flow meter and the water pump are connected with the microcomputer controller through leads; and water is accurately metered through a metering control device based on the single-chip microcomputer technology, the elevator load testing machine is equivalent to a traditionalstandard substance weight to be used for various load tests of the elevator, computer calculation control replaces manual calculation carrying, the problems of reworking and time consumption caused by errors generated in the weight carrying process are thoroughly solved, and high improvement of load test work efficiency and great reduction of physical labor intensity are achieved.

The invention relates to a gaugeable gas storage device, and belongs to the technical field of gas detecting equipment. The gaugeable gas storage device comprises a gas storage container body; the gas storage container body is a corrugated pipe-shaped extension cylinder with two closed ends; the extension cylinder is provided with a gas port; the extension cylinder is arranged in a hanging manner; and the length of the extension cylinder is corresponding to the gas storage quantity of the gas storage device. The gaugeable gas storage device realizes gas collection and metering at the same time, is convenient and practical, and in particular, is suitable for online collection and detection of gas generated in real-time reaction field.