97results about How to "Experimental accuracy" patented technology

The invention discloses a low-melting-point mixed fused salt heat storage and heat transfer material and belongs to the technical field of physical heat transfer and energy storage. The components and content of the low-melting-point mixed fused salt heat storage and heat transfer material are as follows: 6-10wt% of NaNO3, 30-47wt% of KNO3, 3-10wt% of NaCl and 37-61wt% of Ca(NO3)2; Ca(NO3)2 can be replaced with LiNo3 or LiNo3 is added at the same time; 5-10wt% of any one of Li2SO4, Na2SO4 and K2SO4 can further be added, so as to obtain the fused salt mixed with a plurality of components. The invention further provides a preparation method of the low-melting-point mixed fused salt heat storage and heat transfer material. The melting point of the mixed fused salt disclosed by the invention is about 80-115 DEG C, the melting point is about 105-140 DEG C lower than that of Solar Salt, and the thermal decomposition temperature reaches 562-595 DEG C. The preparation process of the fused salt is simple, the working temperature range is wide, and the volatilization of components is reduced under long-time operation, so the fused salt is an excellent low-melting-point mixed fused salt heat storage and heat transfer material.

The invention discloses an experimental method for measuring distribution of breaking longitudinal force of a steel rail of a railway, relates to the technical field of security detection for railways, and particularly relates to an experimental method for measuring a distribution law of breaking longitudinal force of a steel rail of a railway. The experimental method is characterized in that change of the state of the rail steel is simulated when the rail steel is broken by means of applying prestress on the steel rail and then releasing the prestress, and the distribution of the longitudinal force of the steel rail before and after the prestress is released is measured by a force sensor group to obtain the distribution law of the breaking longitudinal force of the steel rail. The experimental method includes mounting the force sensor group on the long steel rail of a track with a certain length at first; completely releasing fasteners of the long steel rail; applying the certain prestress on the long steel rail by a steel rail stretching machine; locking the fasteners of the long steel rail; finally releasing the prestress; acquiring stress data of the steel rail by a sensing node group and the force sensor group; and transmitting the data to a computer by a wireless gateway to obtain the distribution law of the longitudinal force after the steel rail is broken. By the aid of the method, accurate, controllable and low-cost experiment for distribution of the breaking longitudinal force of the steel rail can be realized.

The invention relates to a buoyancy experimental device and method for physics teaching. Experimental equipment for studying the magnitude of buoyancy in middle school physics is quite simple, operating is quite troublesome, visuality is bad, no experimental method is given clearly, a demonstrative experiment and a grouping experiment cannot be well completed, and the teaching effect is poor. The bottom ends of supporting rods are connected with an adjustable base, and the top ends of the supporting rods are connected with an adjusting device. The adjusting device is connected with weights, water tanks are placed under the weights, and the water tanks are filled with water or solutions. An overflowing opening is formed in the upper edge of each water tank, and a square cup is placed under each overflowing opening. The buoyancy experimental device and method are used for buoyancy experiments in physics teaching.

The invention relates to a flow diversion chamber capable of testing the flow diversion capacity of a fracture network of a tight reservoir by gas. The flow diversion chamber can be blended with an API (American Petroleum Institute) flow diversion capacity tester, so that the cost is reduced; rocks such as an actual formation shale or tight sandstone are used for realistically simulating the formation lithology, the damage to the flow diversion capacity by the embedment of a propping agent is considered, and the fracture width and the fracture network structure are changeable; the flow type of the flow diversion chamber is radial flow but not linear flow, whether a test medium passes through all fractures in the fracture network or not cannot be ensured by the linear flow, the spread range of the test medium can be increased by the radial flow, and the accuracy of testing the flow diversion capacity can be increased.

The invention belongs to the field of development of oil and gas wells, and relates to a wellhead sampling device, in particular to a wellhead sampler designed for the characteristic of gas field environment containing high content of H2S / CO2, and a sampling system thereof. The sampling device comprises a sampling valve, a sampling bottle and a pressure reducing valve, wherein two ends of the sampling bottle are in threaded connection with the sampling valve; the external connection of the sampling valve is external-thread clamping sleeve type connection; the pressure reducing valve is used for carrying out pressure reduction and sample injection on high-pressure gas in the sampling bottle; the pressure reducing valve comprises an outer conveying sample injection port which is connected with an outer detector; and the outer conveying sample injection port is a clamping sleeve type connection port so as to eliminate dead angles of pipelines. In the invention, the field sampling for analysis is achieved, the result of experimental analysis has good consistency, the device is safe and reliable, and the corrosion resistance to H2S / CO2 is strong. In the gas field sampler disclosed by the invention, the sampling process is safer, the experimental process is more precise and faster, the applicable pressure range is wider, and more safety is achieved.

The invention relates to a test method for detecting flexural rigidity and energy absorbing properties of automotive parts and a test device for detecting flexural rigidity and energy absorbing properties of the automotive parts. The test device comprises a hammerhead device on an upper end of the test device, a B-column clamp device and a guide rail device on a bottom of the test device, wherein the hammerhead device comprises a hammerhead guide rail (2), a T-shaped groove (2-1) of the hammerhead guide rail, first bolts (4), upper fixing nuts (3), lower fixing nuts (5), a hammerhead (6) and a force sensor (14); the B-column clamp device comprises a bracket (9), a connecting column (8), and a location pin (7); the guide rail device comprises a ground guide rail (10), a ground guide rail groove (10-1), fastening nuts (11), and second bolts (12); the B-column four-point bending quasi-static test device can be freely and easily installed on a pressure machine. The B-column clamp part of the test device can be adjusted according to the shape and dimension of the B column, thus the test device is high in flexibility and freely moved on the guide rail according to the spatial position of the B column.

The invention belongs to the technical field of wind tunnel tests, and in particular relates to a device and method for measuring the flow of a flap gap based on a PIV method. The method comprises thesteps of emitting a laser sheet from an emitting end of a laser, and dividing the laser sheet into two laser sheets through a light path device; coarsely tuning reflectors in the light path device and making the two laser sheets radiating respectively from two directions into a flap gap; and finely tuning the reflectors and making the two laser sheets overlap, that is, completing the constructionof a light path. The device includes a beam splitting cube, reflectors, and an optical clamping member. The device also includes a PIV unit. The device is simple and practical in structural principle, well solves the problem of light path limitation on the PIV shooting of a flow field like a flap gap environment, and greatly improves the efficiency of PIV shooting.

The invention discloses an auxiliary dissolving device for a chemical experiment. The auxiliary dissolving device comprises a dissolving cup, a grinding pot and a dissolving device, wherein an upper cover covers the upper end of the dissolving cup; a water feeding pipe is arranged at the right side of the upper end of the dissolving cup; the grinding pot is arranged at the top of the dissolving cup; the dissolving cup is provided with a placement cavity in a manner of being matched with the grinding pot; a top plate penetrating through the dissolving cup is arranged on the placement cavity; anannular limiting convex edge is arranged at the inner side of an opening formed in the lower end of the placement cavity; the grinding pot is composed of a closing cover and a pot body; the dissolving device is arranged in the dissolving cup. The auxiliary dissolving device for the chemical experiment, disclosed by the invention, has the advantages of large stirring range, good dissolving effectand high dissolving efficiency, and the experiment is carried out accurately.

Said apparatus comprises: a microscope, an image capturing device, a computer, a micro-pressure controller and a chip. In said chip, there are micro channels; said computer is connected to the port of image capturing unit through communication bus; the image capturing unit is connected to the microscope; the chip is placed on the object table; said micro-pressure controller is connected to each out-connection port of the chip micro channels via pneumatic pipeline; the micro-pressure controller is connected to the computer.

The invention relates to the technical field of bio-instruments, and discloses a handheld culture dish used for biological experiment and having good sealing effect. The handheld culture dish includes a culture dish body and a top cover, wherein a separate board is installed in a culture trough in the upper surface of the culture dish body. A handle is installed on the middle of the right side surface of the culture dish body. A fixed piece is installed on the top of the right side surface of the culture dish body. The upper surface of the fixed piece is fixedly connected to a connection column. Two clamping pieces are fixedly connected respectively to two layers of the connection column. A baffle is fixedly connected to the top of the connection column. Through the handle, the culture dish body is convenient to take and is not liable to fall off. By arranging a sealing layer, an annular trough and a clamping ring, wherein the clamping ring is inserted into the annular trough and the sealing layer is tightly bonded to the clamping ring, microorganisms in air are prevented from entering the culture dish body, so that a sealing effect is achieved and an experiment is more accurate.

The invention belongs to the field of civil engineering, and relates to a unidirectional shearing model case for vibration table tests. The model case mainly consists of a peripheral case body, layering side plates and springs, wherein the two ends of the layering side plates are embedded in longitudinal slide grooves formed in the model case body; a plate gap slide groove is formed between the upper and lower adjacent layering side plates; roll balls are arranged in the plate gap slide groove; the inner side of each layering side plate and the peripheral case body are connected by the springs. Through the springs, a test soil body has certain lateral pressure in the vibration process, so that the lateral soil pressure in the soil body vibration process is simulated; the layering side plates can freely slide in the longitudinal slide grooves; the influence of friction on the test soil body is reduced, so that the tests can effectively simulate the vibration mechanical property of the soil body. The unidirectional shearing model case has the advantages that the safety is realized; the structure is simple; the application is convenient.

The invention discloses an anti-radiation fabric which comprises a detection box. Rotating space is arranged in the front end surface of the detection box, the front end wall of the rotating space iscommunicated with outside space, detection space communicated with the rotating space is arranged in the rear end wall of the rotating space, a clamping mechanism is arranged in the left end wall of the detection space, clamping mechanisms centrally symmetric about the detection space are arranged in the right end wall of the detection space, an electromagnetism mechanism is arranged in a second clamping block, a transmission mechanism is arranged in the end wall, far away from the detection space, of a clamping groove, and a driven mechanism is arranged in the rear end wall of the clamping groove. The detection box is simple in structure and simple and convenient to operate, the structure of the detection box is simplified, cost is low, size is small, so that the detection box is conveniently carried, the anti-radiation performance of the fabric can be accurately detected, the detection accuracy of the anti-radiation performance of the fabric is improved, and the qualified rate of thefabric is ensured.

The invention discloses an extraction method for farmland soil microplastics, which comprises the following steps: adding a flotation solution into a pretreated soil sample, uniformly stirring, and standing to obtain a precipitation layer and a non-precipitation layer which are distributed in a layered manner; attaching the surface of the metal container attached with the oil film to the surface of the non-precipitation layer for at least 10 seconds, and then taking out the metal container; or, the extracting solution layer within 1 cm below the liquid level of the non-precipitation layer flows through the surface of the metal container to which the oil film is attached for later use; leaching the oil film of the metal container with ethanol for at least two times, and collecting leacheate; and after ethanol in the leacheate is volatilized, identifying to obtain the farmland soil micro-plastic. The micro-plastic in the farmland soil can be simply, quickly, efficiently and accurately extracted, and the micro-plastic can be conveniently observed and identified by using a microscope and an infrared spectrum. The invention further discloses extraction equipment for the farmland soil micro-plastic, human intervention is reduced, and the effective extraction equipment is provided for simply, quickly, efficiently and accurately extracting the micro-plastic in the farmland soil.

The invention discloses a crude oil automatic sampling and moisture content determining instrument. The determining instrument comprises an automatic sampling part and a distillation device; the automatic sampling part comprises a circulating pump, a sampler and a bypass oil pipe; the bypass oil pipe communicates with a main oil pipe through an oil inlet and an oil return port, and the oil inlet, the circulating pump, a filter, the sampler and the oil return port successively communicate with one another through the bypass oil pipe; the sampler is provided with a sampling pump; the sampling pump communicates with the bypass oil pipe and also communicates to a sampling container; the bottom of the sampling container is provided with a first motor-operated switch; the sampling container communicates to the distillation device through an oil discharge pipe; the distillation device is provided with an oil return pipe; the oil return pipe communicates with the bypass oil pipe; the distillation device is also provided with a measuring device; the circulating pump, the sampling pump, the distillation device, the measuring device and the first motor-operated switch are electrically connected to a controller. The determining instrument can automatically sample and measure the moisture content through a distillation method, achieves full-automatic integration of sampling and measurement, has no human factor error, and has the effect of high measuring accuracy.

The invention relates to a buoyancy experimental device and method for physics teaching. Experimental equipment for studying the magnitude of buoyancy in middle school physics is quite simple, operating is quite troublesome, visuality is bad, no experimental method is given clearly, a demonstrative experiment and a grouping experiment cannot be well completed, and the teaching effect is poor. The bottom ends of supporting rods are connected with an adjustable base, and the top ends of the supporting rods are connected with an adjusting device. The adjusting device is connected with weights, water tanks are placed under the weights, and the water tanks are filled with water or solutions. An overflowing opening is formed in the upper edge of each water tank, and a square cup is placed under each overflowing opening. The buoyancy experimental device and method are used for buoyancy experiments in physics teaching.

The invention provides a screening method for erythrocyte osmotic fragility, which comprises the following steps: S1, test solutions of the erythrocyte osmotic fragility are added into an enzyme plate and preheated at a temperature of 37 to 40 DEG C for 1-2 minutes; S2, 5-10 Mu l of anticoagulant whole blood to be measured is added into holding sample holes of partial areas of the enzyme plate, and then the test solution of the erythrocyte osmotic fragility and the anticoagulant whole blood are mixed evenly; S3, test solutions for stopping erythrocyte hemolysis are added into the partial areas filled with the anticoagulant whole blood to be measured, all solutions are mixed evenly and centrifugation is carried out; S4, the supernatant is removed and placed in the holding sample holes of the other partial areas of the enzyme plate; S5, erythrocyte hemolysis solutions are added into the base solution, and all solutions are mixed evenly; S6, after the hemolysis process is finished, colorimetry is carried out between the solution to be measured of the partial areas filled with the erythrocyte hemolysis test solution and the solution of the other partial areas not filled with the erythrocyte hemolysis test solution. With the advantages of simplicity, trace amounts, fast speed and large samples, the screening method for the erythrocyte osmotic fragility further has the advantages that the screening workload can be reduced, the screening can be completed fast and accurately, the reproducible results can be obtained and the experimental results can be automatically calculated.

The invention provides a shearing box, comprising at least two bases arranged on different vibrating tables, and laminated box bodies which are placed on the bases and are formed by overlapping framesprovided with openings at the side edges; every two adjacent bases are connected with each other by means of a bearing plate, one end of the bearing plate is fixed, and the other end of the bearing plate is movable; every two adjacent frames, which are positioned on the different laminated box bodies and are arranged on the same horizontal plane, are connected with each other by means of a universal coupling; openings of the adjacent laminated box bodies are connected with each other by means of a baffle plate so as to form a communicated container; all the laminated box bodies are respectively provided with limiting components, so that the soil in the shearing box can be subjected to different excitation; furthermore, the seismic ground motions of the bases are relatively independent, but can be mutually propagated; the laminated box bodies are communicated with one another, and the soil can be placed at the communicating parts; the vibration is propagated through the soil medium, sothat the constitutive property that the frame structure of the shearing box is perpendicular to the vibration direction is met; furthermore, the structure can rotate along multiple directions, the real situation of the interaction between the soil and the underground structure under multi-point excitation is simulated, the experiment is accurate.

The invention relates to the field of geothermal tail water recharge, in particular to an indoor simulation soil column experiment device under a geothermal tail water sandstone recharge condition. The device comprises a water supply structure, a soil column pipe and a solution collection structure; the soil column pipe is connected with the water supply structure and the solution collection structure, and a constant temperature water bath structure is arranged on the outer circumference of the soil column pipe. The constant temperature water bath structure is used for keeping the temperatureof the soil column pipe within a set range; a pressure measuring hole and a sampling port are formed in the soil column pipe at intervals, the pressure measuring hole is connected with a pressure measuring structure used for measuring water pressure, the sampling port is connected with a sampler, and the sampling port is communicated with an inner cavity of the soil column pipe. The invention hasthe beneficial effects that the overall structure is simple, and sampling is convenient; and the arranged constant-temperature water bath structure simulates the temperature environment under the geothermal tail water sandstone recharge condition, condition parameters for simulating a soil column experiment are increased, and the experiment is more real and accurate.

The invention relates to an adjustable multi-hob rock cutting fragmentation test device for the field of tunnel project. Being characterized in that the soil warehouse is provided on a guiding track achieving the vertical movement by the vertically-moving hydraulic cylinder; the soil warehouse is provided on the soil warehouse supporting base for achieving the transverse movement by the transverse hydraulic cylinder fixed on the soil warehouse base; the soil warehouse has the rock soil samples; two sides of the soil warehouse are provided with four pillars leaning against the beams and forming a rectangular frame structure. The lower position of the fixed beams of the vertical movement of two synchronized hydraulic cylinders for the realization of the vertical plate hob feed, vertical hydraulic cylinder mounting bracket for the following connection hob, for the realization of more than the fixed plate hob; mounting bracket Three-axis with the following sensors, hob plate connected to the force sensor in the bottom three of the hob seat, using industrial computer, data acquisition cards, the pressure of traffic and other sensors, such as high-speed digital camera system to test thedisk-shaped roll knife load rock, broken rock and soil characteristics.

The invention provides a hobbing cutter holder system loading running-in performance testing device which comprises a cutter holder used for fixedly installing a cutter shaft, and a hobbing cutter is arranged on the cutter shaft; the running-in device is provided with a transmission shaft, the transmission shaft is driven by a motor, a running-in contact seat is coaxially arranged on the transmission shaft, a running-in groove is formed in the running-in contact seat, the shape of the running-in groove corresponds to the contour shape of a cutter ring of the hobbing cutter, and the running-in groove is used for being attached to the cutter ring of the hobbing cutter; the vertical force loading device is connected with the transmission shaft and is used for adjusting the vertical force applied by the running-in groove to the hob ring of the hob; the lateral force device is connected with one side of the running-in contact seat, and lateral force is used for adjusting the magnitude of lateral force applied to a hob ring of the hob by the running-in groove; the rotating speed monitoring device is used for monitoring the rotating speed of the running-in groove and the rotating speed of the hob ring of the hob; the invention further provides a hobbing cutter holder system loading running-in performance testing method.

The invention relates to an intelligent mercurial thermometer which comprises a long-strip-shaped mercurial thermometer body. A capillary tube extending in the longitudinal direction is arranged in the mercurial thermometer body and is communicated with a glass bulb which is located at the lower end of the mercurial thermometer body and used for containing mercury. A first wire extending in the longitudinal direction of the mercurial thermometer body is arranged in the mercurial thermometer body. The lower end of the first wire extends into the inner wall of the glass bulb and makes contact with the mercury contained in the glass bulb. The inner wall of capillary tube is provided with a second wire extending in the longitudinal direction of the capillary tube. The lower end of the second wire makes contact with the mercury, and the second wire is exposed on the inner wall of the capillary tube. The upper end of the first wire and the upper end of the second wire extend out of the mercurial thermometer body. The extended end of the first wire is electrically connected with one output end of a DC power supply. The extended end of the second wire is electrically connected with the other output end of the DC power supply through a current information processor. The intelligent mercurial thermometer can be used for visually and accurately displaying the real-time temperature in a digital mode, is high in efficiency and accuracy, and avoids personal errors.

The invention relates to a position adjustable multi-hob rotary cutting test-bench. The soil warehouse base fixed on the soil warehouse and a rectangular base fixed on the ground frame are supported by a looping support and looped by two hydraulic motors synchronously. Periphery of the soil warehouse is provided with flanges, which is provided with four guiding pillars evenly and four hydraulic cylinders; the four hydraulic cylinders driven synchronous vertical position into the soil to the campaign from the four columns to orientation and direction of torque transmission. 6 shelves uniform foundation column layout, fixed a column to open the top 4 at the top ring groove of the frame, forming a rectangular frame; connected at the top of the bottom bracket has three slide rail and the knife block, plate hob installed in the Seat knife. Using IPC test, data acquisition cards, the pressure of the flow velocity sensor, dynamic strain gauge, high-speed digital camera system on the cutting process of geotechnical monitoring. The test-bench is mainly used for the multi-hob and rotary cutting of rock mechanical properties of the relevant test.

The invention discloses a concrete electric pole mechanical property detection system and a concrete electric pole mechanical property detection method. The system comprises a testing platform, wherein the testing platform comprises a horizontal platform which is arranged horizontally; a first fixing support base is arranged at the front part of the horizontal platform; the first fixing support base is arranged close to the front end of the horizontal platform; a theodolite is arranged on the outer side of the first fixing support base; a second fixing support base is arranged at the rear part of the horizontal platform; the second fixing support base is arranged close to the tail end of the horizontal platform; an inclined platform of which the tail end is inclined downwards is connected with the tail end of the horizontal platform; a guide wheel is rotationally arranged on the lower surface of the rear part of the inclined platform; a steel wire rope is wound on the guide wheel; an external force loading part is connected with the front part of the steel wire rope; a load meter is connected with the rear part of the steel wire rope; the front end of the steel wire rope is connected with the front part of the horizontal platform; and a hoop is connected with the rear end of the steel wire rope. According to the concrete electric pole mechanical property detection system, the structure is simple, the deflection value of a concrete electric pole is confirmed, and meanwhile the testing platform is convenient to move and can be moved by users according to demands.

The invention relates to an intelligent mercurial thermometer capable of being monitored in real time. The intelligent mercurial thermometer comprises a strip-shaped mercurial thermometer body. A capillary tube is arranged in the mercurial thermometer body and communicated with a glass bulb located at the lower end of the mercurial thermometer body, two longitudinal guide lines parallel with the capillary tube are arranged in the mercurial thermometer body and respectively provided with a plurality of longitudinally-arranged transverse guide lines, spacing distances of the transverse guide lines on the longitudinal guide lines are the same, the transverse guide lines on the longitudinal guide lines correspond to one another and are separated by the capillary tube, one end, located on the capillary tube, of each transverse guide line is exposed out of the inner wall of the capillary tube, one end of each longitudinal guide line stretches out of the mercurial thermometer body, the stretching end of one longitudinal guide line is electrically connected with one output end of a direct-current power supply, and the stretching end of the other longitudinal guide line is electrically connected with the other output end of the direct-current power supply through a current information processor. According to the intelligent mercurial thermometer, the real-time temperature can be visually displayed as numbers.

The invention discloses a device for simultaneous measurement and recording of oxygen consumption dynamic change of a small animal. The device comprises an animal chamber, an absorbent bottle is placed inside the animal chamber, an upper opening of the animal chamber is connected with a first water detection meter, two electrodes of the first water detection meter is connected with a first relaycontrol system, two ends of the first relay control system are respectively connected with a pure oxygen storage bottle and the animal chamber through rubber hoses, the upper opening of the pure oxygen storage bottle is connected with a second water detection meter, two electrodes of the second water detection meter is connected with a second relay control system, two ends of the second relay control system are respectively connected with the pure oxygen storage bottle and a water storage bottle through rubber hoses, the water storage bottle is placed on a scale, and the scale is connected with a computer through a data output line. The device disclosed by the invention establishes a set of gas-liquid combined and real-time recording device, has the advantages of multiple paths, automaticreal-time recording and accurate data recording, and can be used for automatic continuous measurement and record of the entire animal oxygen consumption and oxygen consumption rate of multiple models. The experiments are simple, efficient and accurate.

The invention discloses an experimental device for automatically loading impacts on an SHPB (Split Hopkinson Pressure Bar) at a high temperature. The experimental device comprises a high-pressure air cylinder, an incident bar, a transmission bar, a base for the placement of the incident bar, the transmission bar and a test piece, and a test piece heater, wherein the test piece heater and the base are separately arranged; width-adjustable test piece guide rails for guiding the test piece from the test piece heater to the base are arranged between the test piece heater and the base; test piece baffle rods for limiting the test piece are arranged on one side of the test piece which is opposite to the base and the test piece guide rails; three-dimensional regulation of the base can be achieved. According to the adopted experimental device for automatically loading the impacts on SHPB at the high temperature, the test piece is uniformly heated, the experiment process is accurate, and the stability is high.

The invention discloses a device and a method for testing combustion characteristics of a material in a low-pressure oxygen-enriched environment. The device comprises a low-pressure cabin body, an ignition device, a weighing device, an oxygenation system, an exhaust system, a closed-loop pressure control system and an online flue gas detection and analysis system, wherein the closed-loop pressure control system annularly sleeves the bottom of the low-pressure cabin body, the closed-loop pressure control system is connected with the oxygenation system, the low-pressure cabin body is respectively connected with the closed-loop pressure control system and the exhaust system, the weighing device is arranged in the low-pressure cabin body, an area above the weighing device is a reaction area, the ignition device extends into the internal reaction area from the outside of the low-pressure cabin body through an ignition rod, and the online flue gas detection and analysis system is connected with the low-pressure cabin body. By means of the device, the combustion characteristics of the material in the low-pressure oxygen-enriched environment can be efficiently and accurately experimented and analyzed, and pressure at different altitudes can be simulated.

The invention relates to an intelligent mercurial thermometer capable of being monitored in real time. The intelligent mercurial thermometer comprises a strip-shaped mercurial thermometer body. A capillary tube is arranged in the mercurial thermometer body and communicated with a glass bulb located at the lower end of the mercurial thermometer body, two longitudinal guide lines parallel with the capillary tube are arranged in the mercurial thermometer body and respectively provided with a plurality of longitudinally-arranged transverse guide lines, spacing distances of the transverse guide lines on the longitudinal guide lines are the same, the transverse guide lines on the longitudinal guide lines correspond to one another and are separated by the capillary tube, one end, located on the capillary tube, of each transverse guide line is exposed out of the inner wall of the capillary tube, one end of each longitudinal guide line stretches out of the mercurial thermometer body, the stretching end of one longitudinal guide line is electrically connected with one output end of a direct-current power supply, and the stretching end of the other longitudinal guide line is electrically connected with the other output end of the direct-current power supply through a current information processor. According to the intelligent mercurial thermometer, the real-time temperature can be visually displayed as numbers.

The invention discloses a radiation protection cloth based on mechanical principle, and a use method thereof, comprising a detection box, wherein a front end face of the detection box is provided witha rotational space of which a front end wall is communicated with the outside space, a rear end wall of the rotational space is internally provided with a detection space communicated with the rotational space, a clamping mechanism is arranged in a left end wall of the detection space, the clamping mechanism symmetrically arranged around the detection space as a center is arranged in a right endwall of the detection space, a second clamping block is internally provided with an electromagnetic mechanism; a transmission mechanism is arranged in the end wall, away from the detection space, of aclamping groove; and a driven mechanism is arranged in the rear end wall of the clamping groove. Such device is simple in structure and convenient to operate, and in work of the radiation protectioncloth provided by the invention, the device is simplified in structure, low-cost, small in size and portable, and can detect radiation protection performance of the cloth more accurately, increase detection accuracy of cloth radiation protection performance and guarantee percent of pass of products.

The invention discloses a standard Vicat device for automatically measuring the setting time and an operation method thereof. The standard Vicat device comprises an operation box, a setting time display, an infrared light emitter, an infrared light receiver and a test mold, wherein the test mold is arranged on the operation box; a test needle is arranged above the test mold and is connected with the setting time display; the infrared light emitter and the infrared light receiver are arranged on two sides of the test needle; the infrared light emitter, the infrared light receiver and the test needle are positioned on a same plane; photo-diodes are arranged on the infrared light receiver; and the infrared light emitter is movable and can drive the photo-diodes to generate a current change. The standard Vicat device for automatically measuring the setting time and the operation method thereof, disclosed by the invention, have the benefits that the infrared light emitter, the infrared light receiver and other photoelectric converters can be used for photoelectric conversion; through a change in current magnitude, a timer automatically times and accurately reads the setting time withoutsite timing; the artificial interference in a laboratory temperature field and other environmental factors is also reduced; the operation is simple and quick, and the measurement precision is high.