32 results about "Volume measurement" patented technology

A gas leakage rate testing apparatus and method for a nonmetal hydrogen conveying pipeline, and a nonmetal hydrogen conveying pipeline volume expansion amount testing method. The gas leakage rate testing apparatus comprises: a test member (1), in which a test cavity (16) adapted to place a pipeline (31) to be tested is formed, wherein a sealed test cavity (11) is formed after said pipeline (31) is placed in the test cavity (16); a calibration cavity (21) selectively communicated with the test cavity (11); a first gas filling assembly (10) selectively communicated with the calibration cavity (21) so as to be adapted to inject gas of a first set pressure into the calibration chamber (21); a measurement unit (9) configured to measure the pressure and temperature in the calibration cavity (21) and the pressure and temperature in the test cavity (11), and calculate the volume of the test cavity (11); and a leakage rate test unit configured to acquire a pressure change value of the test cavity (11) within a preset time interval, and calculate the gas leakage rate of said pipeline (31). The technical problem that gas leakage rate testing is inaccurate due to the measurement of the volume of the test cavity (11) being difficult or inaccurate is solved. In the nonmetal hydrogen conveying pipeline volume expansion amount testing method, after gas leakage rate testing is ended, a measurement unit (9) calculates a second volume of a test cavity (11) on the basis of a second formula, and on the basis of the difference between a first volume and the second volume, calculates the volume expansion amount of a pipeline (31) to be tested.

The invention discloses a volume calibration device for packaged commodities, which comprises a plurality of sets of parallel volume measuring and adjusting assemblies arranged between a sealing mechanism and a filling mechanism, and the sealing mechanism, the filling mechanism and the volume measuring and adjusting assemblies are arranged on the side edge of the same conveyor; the multiple sets of volume measurement and adjustment assemblies are installed on the same set of supporting frame, and the supporting frame controls the volume measurement and adjustment assemblies to ascend and descend. The volume measuring and adjusting assembly comprises an industrial camera, a liquid injection pipe and two measuring electrodes, the liquid injection pipe and the two measuring electrodes are distributed up and down, and the measuring electrodes extend into the filling bottle and are inserted into liquid; the volume measuring and adjusting assembly is arranged and comprises the two measuring electrodes, the two measuring electrodes are connected with the liquid level detection system in a matched mode through the wires, the distance between the liquid level and the bottle opening of the filling bottle can be detected after the measuring electrodes stretch into the filling bottle by a certain depth and the bottoms of the measuring electrodes are immersed in liquid, and then the volume of the injected liquid is obtained; and determining whether the liquid is lower than the standard volume.

The utility model discloses a blood perfusion device adsorbent filling amount detector, relates to the technical field of perfusion device adsorbent filling amount measurement, and provides the following scheme aiming at the problems that when wet resin is poured into a measuring cylinder in the prior art, the measurement time is long, and the volume cannot be accurately measured: the blood perfusion device adsorbent filling amount detector comprises the measuring cylinder, an empty groove is formed in the measuring cylinder, and the measuring cylinder is used for loading adsorbent particles mixed with liquid; the compaction scale column is connected to the interior of the measuring cylinder, a through groove is formed in the compaction scale column, a water outlet through hole is formed in the lower end of the compaction scale column, a filter screen is connected to the interior of the lower end of the water outlet through hole, and measuring scales are engraved on the periphery of the compaction scale column; according to the utility model, the structure is novel, the adsorbent is rapidly pressed through the self weight of the compaction scale column, and the phenomena of floating and bridging of the adsorbent are avoided, so that the measurement precision is improved.

The invention relates to the technical field of gas disaster prevention and control, and discloses an experiment and calculation method for accurately measuring the initial velocity of coal seam gas diffusion. According to the experimental method, a gas diffusion space volume measurement step is added, a coal sample is loaded into a sample tube and subjected to vacuum degassing, helium with set pressure is introduced into a fixed space, pressure values in different states are recorded, and the volume of the gas diffusion space is accurately calculated in combination with a compression factor solved by a Lee-Kesler equation, so that the volume of the gas diffusion space is calculated. The problem of gas emission space volume inconsistency caused by coal sample physical property difference is solved. The calculation method is optimized, the accurately measured gas emission space volume is included, gas compression factors are considered, a compensation model is established, the idealized hypothesis that gas is regarded as incompressible fluid in a traditional method is broken through, errors caused by volume difference and gas compressibility are corrected, and the gas emission space volume is calculated. The accuracy and reliability of the calculation result of the initial velocity of coal seam gas diffusion are remarkably improved, and scientific data support is provided for coal and gas outburst risk judgment.

The application discloses a kind of canned solid detection device and method, it is related to food solid detection technical field.The canned solid detection device is used for the detection of canned solid content, including volume measurement container, the opening of the top of volume measurement container is provided with sieve, the opening of the top of volume measurement container is rotatably connected with sieve, the top surface of sieve is provided with weighing device, and the weighing device is used to weigh the weight of solid separated on sieve;The weighing device includes weighing tray, the canned solid detection device and method are rotatably connected with sieve on volume measurement container, and the weighing device perpendicular to sieve is provided on sieve, when weighing solid on sieve, only need to rotate sieve upwards, pour solid on weighing device, and then solid can be weighed.

The invention relates to a method for measuring the volume of a first gas space and / or a second gas space in a gas storage tank (10) with an outer shell (30). In this method, the first gas space (G1), which is delimited by at least one movable membrane (20), is filled with a first gas. The second gas space (G2), also delimited by the at least one movable membrane (20), is filled with a second gas. Once the gas spaces are filled, the position of the membrane (20) separating the first gas space (G1) and the second gas space (G2) is determined. Based on the determined position values, the volume of the first gas space (G1) and / or the second gas space (G2) is calculated. For the position determination, the movable membrane (20) forms a surface that defines a plane (E), wherein the plane (E) is or forms the boundary between the first gas space (G1) and the second gas space (G2).The position of the membrane within the gas storage (10) is also determined with respect to at least one measuring point (M1 / M2), preferably using an optical, mechanical, acoustic and / or electrical measuring method.

The present invention discloses an asymmetric container structure and a rapid volume measurement method thereof; the present invention comprises a fermentation tank, a volume measurement component arranged on the surface of the fermentation tank and a fluid measurement component arranged inside the fermentation tank; the bottom of the fermentation tank is detachably connected to a base; the volume measurement component comprises a connecting plate fixedly connected to the surface of the base; when measuring, a pre-calibration value is obtained by a liquid level meter, the pre-calibration value is the liquid level height input by the liquid level meter; water is added to the container using a flow meter; the accumulated liquid volume of the flow meter is checked at each position where the composition of the components in the tank changes; the data is input into the first to the most groups respectively from least to most; the corresponding record button is clicked after each input; after completing all the data, the system generates a 2-point correction algorithm in each of the two adjacent groups, so that the height can be directly converted into the liquid volume or weight through a fixed formula; the operator is convenient to use, and the convenience of the liquid level meter is increased.

The present invention generally relates to a container and a liquid or granular powder volume measurement device. A measuring device is transferable between the containers for metering a quantitative dose of liquid.

This invention provides a circulation system and method for volume measurement. The circulation system includes a liquid storage component, a measuring component, a filter component, and a drive pump. The liquid storage component has a storage chamber; the measuring component has a first inlet and a first outlet, the first inlet communicating with the storage chamber, and is used to measure the volume of the measured liquid; the filter component has a second inlet and a second outlet, the second outlet communicating with the storage chamber, and is used to filter the measured liquid; the drive pump is connected to the storage chamber. The liquid storage component in this application has the function of storing the recovered measured liquid for later use, the filter component has the function of keeping the measured liquid clean for recycling, and the drive pump provides a stable power source, realizing integrated recovery and filtration of the measured liquid, convenient operation, and improved working efficiency of the circulation system.

The application provides a volume measuring device and a volume measuring method of a heat exchanger of a dilution refrigerator, and relates to the technical fields of volume measurement and dilution refrigerator. The volume measuring device comprises a reference container, a pressure regulating assembly, a first valve and a pressure gauge. The reference container is used for connecting a to-be-measured container and has a first cylinder and a second cylinder which are slidably connected with each other, and the second cylinder is suitable for reciprocally sliding relative to the first cylinder in an axial direction to change the volume of the reference container. The pressure gauge is suitable for measuring the internal pressure of the reference container. The first valve is arranged between the reference container and the to-be-measured container. The pressure regulating assembly adjusts the pressure in the reference container and the to-be-measured container to a reference pressure and closes the first valve in response to the first valve being initially opened; then adjusts the pressure of the reference container to a first pressure and opens the first valve again, so that the pressure gauge reading decreases to a second pressure; and then drives the second cylinder to slide towards the first cylinder until the pressure gauge reading returns to the first pressure.

The present application relates to a kind of method and system for determining the volume of pipeline according to pipeline length and pipeline diameter, comprising the following steps: obtaining multiple first arm length and multiple second arm length after rotating preset number of times according to preset degree of rotating arm;For each rotation, construct coordinate system according to coordinate origin, first arm length and second arm length, and determine the first coordinate point corresponding to the first arm length and the second coordinate point corresponding to the second arm length according to the coordinate system;According to each first coordinate point and each second coordinate point, the local diameter corresponding to the local position of pipeline is obtained;The local diameter corresponding to each axial measurement position is obtained;Determine the pipeline diameter of pipeline according to each local diameter;The pipeline length of pipeline is obtained by stretch line displacement sensor;According to pipeline length and local diameter, the volume of pipeline corresponding to pipeline length is determined.The problem that the volume measurement environment of existing pipeline is high and low in precision is solved.

The invention relates to the technical field of volume measurement, and discloses a lifting adjusting type measuring cup metering machine which comprises a supporting connecting column, the ground, a metering barrel, a fixed bearing and a discharging opening. Wherein the metering barrel is in a barrel shape and is provided with an opening in the axial direction, a supporting connecting column, a supporting limiting column and a rotating motor are fixedly installed on the upper surface of the ground, a power transmission rod is movably installed on the upper surface of the ground, and a limiting fixing ring is coaxially and fixedly arranged on the inner wall of the end, away from the opening, of the metering barrel; the core problems that traditional measuring cup metering equipment is poor in universality and tedious in adjustment are effectively solved, the flexibility and accuracy of material metering are remarkably improved, the lifting adjusting structure is driven by the servo motor, a measuring cup assembly does not need to be replaced, the cost is reduced, and the working efficiency is improved. The coincidence volume of the storage metering cup and the lifting metering cup can be flexibly changed, the metering requirements of materials of different specifications are met, the production changing efficiency is greatly improved, and the flexible production concept is met.

This invention proposes an excavated soil volume measurement system and method that can accurately determine the weight, volume, and specific gravity of excavated soil generated in a slurry pressure balance shield tunneling system at an appropriate time. [Solution] The excavated soil volume measurement system 1 includes a screw conveyor 3 that discharges excavated soil from the chamber 24 of the shield machine 2, a soil pumping pipe 4 connected to the screw conveyor 3, a hopper 5 located outside the shaft into which the excavated soil transported via the soil pumping pipe 4 is fed, a weighing scale 51 that measures the weight of the hopper 5, and a three-dimensional measuring device 8 that measures the shape of the hopper 5 from above.

The utility model relates to the technical field of aquatic organism measurement, and discloses a measuring device for measuring the fatness of shellfish based on liquid volume, which comprises a base, the top of the base is provided with a containing groove, the top of the containing groove is fixedly connected with a bearing box, the bearing box is internally provided with a measuring assembly, and the measuring assembly comprises a weighing tray. A measuring cup is arranged above the weighing tray, a flow gathering device is arranged at the top of the measuring cup, a storage barrel is arranged at the top of the flow gathering device, and fixing assemblies are arranged on the outer wall of the storage barrel and the outer wall of the flow gathering device. According to the device, water is added into the storage barrel, shellfish is placed in the storage barrel, the total volume data M1 is measured through the weighing tray, the shellfish is dissected to reserve the volume M2 of an empty shell and the volume M3 of shellfish meat soft bodies, the mass of equivalent-volume water is measured and converted into shell cavity volume M0 data, the fatness degree is calculated according to a formula, the problems that a traditional method is tedious in measurement and large in error are solved, and the detection efficiency and accuracy are improved.

The invention relates to the technical field of funnel volume measurement of funnel breasts, in particular to a method for measuring the funnel volume of a newborn false funnel chest, which comprises the following steps of: filling and leveling up a sunken part of newborn PPE by using ultra-light clay, so that the surface of the ultra-light clay is flat and is flush with the thorax around a funnel; adding water into the measuring cylinder, and recording the initial volume of the water in the measuring cylinder; the ultra-light clay for filling and leveling is taken out and placed at the bottom of the measuring cylinder, and the volume of the rising water level in the measuring cylinder is the volume of the funnel; the step S1 and the step S2 are repeated for three times, and the average value of the three funnel volumes is the final funnel volume. The method is intuitive and accurate in result, non-invasive, non-toxic, non-radiative, simple to operate, less in time consumption, good in repeatability, less in material consumption, low in price, capable of being operated beside a bed and free of transfer, and overcomes the defects that a traditional PE evaluation method is complex to operate, long in time consumption, high in examination cost, invasive (X-ray radiation), needs to transfer a sick child, and the like. And the accuracy of the result is influenced by the technology and experience of the inspector.

The embodiment of the invention discloses a liquid detection calibration method, a liquid volume detection method and device, a fertilization system and a medium, and relates to the technical field of equipment control. The method comprises the steps that the calibration flow of calibration liquid injected into a target container is obtained; in the process of injecting the calibration liquid into the target container, multiple groups of different calibration data are obtained, and each group of calibration data comprises the calibration liquid level height in the target container; and establishing a calibration mapping relation between the liquid level height and the liquid volume in the target container according to the calibration flow and the multiple groups of calibration data. According to the technical scheme, the calibration liquid is injected into the target container according to the calibration flow, the multiple sets of calibration data including the calibration liquid level height are obtained in the calibration liquid injection process, and then the calibration mapping relation between the liquid level height and the liquid volume in the target container is established according to the calibration data; accurate detection and calibration of liquid in a container with unknown liquid volume metering can be realized.

This invention provides a method for measuring the volume of liquid in a metering tank and a metering tank. The method includes: pouring a first liquid into the metering tank until the liquid level of the first liquid is a target liquid level within a target range; the relationship between the volume and the liquid level within the target range is a preset linear model; pouring out a second liquid from the target range, and determining the volume of the first liquid according to the preset linear model. The solution of this invention solves the problem of low accuracy in volume measurement results of the metering tank, reduces the influence of irregular internal components in the metering tank on volume measurement, and can effectively improve the uncertainty, accuracy, and stability of volume measurement in the metering tank.

The application relates to the technical field of volume measurement, and discloses a liquid level metering device of a water tank of an underwater vehicle, which comprises a shell, a supporting mother plate, a power supply filter, a power supply circuit board and a control circuit board. The power supply circuit board and the control circuit board are detachably connected with the supporting mother plate. A power supply loop is arranged on the power supply circuit board, and a control loop is arranged on the control circuit board. When the liquid level metering device is in a working state, the power supply filter, the power supply loop, the control loop, a self-checking switch and an operating state indicating lamp form a series system. The average failure interval time of the liquid level metering device is determined based on the reciprocal of the device failure rate, and the device failure rate is obtained by summing the component failure rates of each component in the liquid level metering device. Therefore, the reliability and the precision of the liquid level metering device of the water tank of the underwater vehicle under extreme conditions are improved, and the stability and the controllability of the underwater vehicle are further ensured.

The invention discloses a container volume measuring device based on pressure detection, and relates to the technical field of volume measurement. The precision problem is solved. The device specifically comprises a base, the top of the base is provided with a conveying mechanism used for conveying and supporting container products, a portal frame is fixed to the outer wall of the top of the base through bolts, and the inner side of the top of the portal frame is in lifting transmission fit with a measuring mechanism through a lifting mechanism. On the basis of an ideal gas state equation, an opening of a container is sealed, then gas is supplied into the container, and the volume of the container is calculated in the modes of temperature monitoring, gas inflow monitoring and gas pressure monitoring, so that application of a standard volume is eliminated, the measurement precision is improved, and meanwhile, the measurement accuracy is improved for containers with different volumes. The proportion of the air supply quantity to the volume of the container can be reduced through different air supply quantity forms, errors are further reduced, and the method can be suitable for volume measurement of any regular or irregular open container.

This invention discloses a closed container volume measurement device and method based on the working principle of the "PVTt method gas flow standard device," belonging to the field of volume measurement technology. It solves the problems of long detection time, high cost, or complex measurement steps in existing geometric measurement methods and volume comparison methods for volume verification. The device includes a pressure-stabilized gas source connected to a measurement component. The pressure-stabilized gas source fills the container under test with gas. The measurement component includes flow, pressure, and temperature sensors to measure the mass flow rate of the gas filled in over a period of time, as well as the pressure and temperature changes of the filled gas, and calculates the volume of the container under test. This simplifies the detection operation and avoids environmental pollution from the water used in the detection process.

The present application relates to the technical field of spent fuel reprocessing, in particular to a kind of 1AF metering tank material liquid volume measuring method and application thereof, wherein, 1AF metering tank material liquid volume measuring method includes the following steps: first, using piecewise density measurement method, the interval density of each subsection of 1AF metering tank can be accurately measured, so that density measurement is more accurate and effective, so that the state of material liquid in 1AF metering tank can be more truly reacted;Then, using the obtained interval density and pressure value, the corresponding liquid level height is obtained, and the liquid level height is brought into the mathematical model of volume-liquid level height of the corresponding subsection, so that the volume of 1AF metering tank material liquid can be obtained.The measuring method fully considers the influence of the density of material liquid in different subsection intervals in 1AF metering tank on volume, not only makes the density measurement of material liquid in different subsection intervals in 1AF metering tank more accurate, but also assists the accurate measurement of 1AF metering tank material liquid volume.

This invention provides a method for determining the volume of hydraulic perforation in coal mines. The method includes: closing two valves and a throttle valve; opening the air pump and valves to extract high-pressure nitrogen from the storage tank into the measuring instrument; closing the air pump and valves when the pressure in the measuring instrument reaches a preset value, and recording the nitrogen pressure P1, volume V1, and temperature T1 in the measuring instrument; opening the throttle valve to allow nitrogen in the measuring instrument to enter the measuring air chamber and expand, and observing the second pressure gauge; closing the throttle valve when the pressure reaches the later preset value of the measuring instrument, and recording the nitrogen pressure P2, volume V2, and temperature T2 in the measuring instrument; reading the second pressure gauge reading P3; inputting the data into the measuring instrument; operating the measuring instrument to calculate the volume of the perforated hole. This invention can effectively overcome errors caused by differences in coal body parameters and coal powder loss, controlling the volume measurement error to within 2%.

This invention discloses a method for measuring the volume of irregularly shaped sealed containers, addressing the problem of inaccurate volume calibration of irregularly shaped sealed containers using existing direct water filling methods. The method includes: first, evacuating the irregularly shaped sealed container under vacuum; then, constructing a measuring device using a transparent flexible tube, a vacuum device, and a water-filling container; allowing ultrapure water to enter the irregularly shaped sealed container under the pressure difference created between air and the container; simultaneously, using the vacuum device to assist in filling the container with ultrapure water; and finally, calculating the volume of the irregularly shaped sealed container by combining the weight of the container before and after water filling with the density of the ultrapure water. Compared to the direct water filling method, this invention ensures that the irregularly shaped sealed container is completely filled with water, leaving no gaps or air bubbles, thereby improving the accuracy of volume measurement.

The invention discloses an oil volume measuring method and system for a multi-oil-tank aircraft. The method comprises the following steps: based on a geometric model of each fuel tank of the same aircraft, pre-generating a query database associated with the oil level height, the oil level pitch angle, the oil level roll angle and the oil volume of each fuel tank; measuring and calculating a real-time oil surface pitch angle and an oil surface roll angle shared by each oil tank through a plurality of pose sensors arranged on one oil tank; the real-time liquid level height of each oil tank is obtained through the respective liquid level sensor of each oil tank; for each oil tank, the real-time oil surface pitch angle, the oil surface roll angle and the real-time liquid level height of the oil tank form query parameters, matching query or interpolation calculation is carried out in a query database corresponding to the oil tank, and the real-time oil volume of the oil tank is obtained; and performing time sequence filtering processing on each calculated real-time oil volume to obtain a final oil volume of each oil tank. According to the invention, high-precision and high-stability measurement of the oil volume can be realized.

The present application provides a kind of shale gas content determination device and method, the device includes sample jar, gas volume measurement container, gas collection bottle, vacuum pump and natural gas bottle;Sample jar is provided with first pressure sensor and first temperature sensor;Gas volume measurement container is provided with gas volume measurement chamber, and gas volume measurement container is provided with second pressure sensor and volume measurement sensor component;Sample jar is communicated with gas volume measurement container by first pipeline, and gas volume measurement container is communicated with vacuum pump by second pipeline and third pipeline in turn, and gas volume measurement container is communicated with gas collection bottle by second pipeline and fourth pipeline in turn, and natural gas bottle is communicated with gas volume measurement container by fifth pipeline.It can measure shale gas content, effectively avoid the strict requirement for experimental sample, and the uncertainty caused by loss of time ambiguity, without other parameter calibration, the result is more reliable.

The invention provides a volume measurement device and a volume measurement method of a heat exchanger of a dilution refrigerator, and relates to the technical field of volume measurement and dilution refrigerators. The volume measuring device comprises a reference container, a pressure regulating assembly, a first valve and a pressure gauge. The reference container is used for being connected with a to-be-measured container and is provided with a first cylinder and a second cylinder which are in sliding connection with each other, and the second cylinder is suitable for reciprocating sliding relative to the first cylinder in the axial direction so as to change the volume of the reference container. The pressure gauge is adapted to measure the internal pressure of the reference vessel. The first valve is arranged between the reference container and the to-be-tested container. The pressure regulating assembly responds to the first valve which is opened for the first time, regulates the pressure in the reference container and the to-be-tested container to the reference pressure, and closes the first valve; the pressure of the reference container is adjusted to the first pressure, the first valve is opened again, and the reading of the pressure meter is reduced to the second pressure; and then the second cylinder is driven to slide towards the first cylinder until the reading of the pressure gauge is recovered to the first pressure.

The present application relates to a kind of runoff sediment content measuring device and method based on three-dimensional vision and dynamic weighing.The runoff sediment content measuring device includes inflow, water inlet valve, machine case, container, bottom plate, rack, drain valve, weighing sensor, universal support, water level electrode, control module and depth camera;The middle part of the bottom plate of the machine case is provided with an opening allowing the container to pass through;The outer surface of the container is circumferentially provided with a support plate, and a circular-arc-shaped mounting groove is arranged on the support plate;Three universal supports are circumferentially mounted on the support plate, and the lower end of each universal support is fixedly connected with a weighing sensor, and the weighing sensor is in contact with the bottom plate and fixed;Depth camera is used to obtain the three-dimensional depth image of the runoff surface in the container.The present application breaks through the precision bottleneck of non-steady-state liquid surface volume measurement, realizes high-precision mass measurement under the condition of shaking, and completely eliminates the mechanical interference of rotating runoff on the weighing sensor.

To provide an excavated soil volume measuring system in a shield construction method, capable of reliably calculating the cross-sectional ratio of each soil layer even if irregularly different soil layers exist only on one side of the vertical center line of the excavated cross-section.SOLUTION: The present invention comprises electromagnetic wave transmitting / receiving means 11 installed on a face plate 4 for transmitting electromagnetic waves to a face 8 and receiving electromagnetic waves, a soil quality determination unit 19 for determining a soil quality of an excavated cross-section based on a received signal, an angle measuring unit 18 for detecting rotation angle, and a soil structure data creation unit 20 for creating excavated cross-sectional soil structure data based on the soil structure determination result data and the rotation angle measurement data. The soil structure data creation unit 20 creates soil regions A1 to A8 surrounded by straight lines L1 to L6 drawn horizontally from a boundary position where the soil quality changes toward a vertical center line V of the excavated cross-section at the rotation angle of an exploration position of the electromagnetic wave transmitting / receiving means 11, an outer circumference S of the excavated cross-section, and the vertical center line V as excavated cross-sectional soil structure data, and based on this, obtains the index excavated soil volume.SELECTED DRAWING: Figure 7

This invention belongs to the field of volume measurement technology and relates to a method for calculating the volume of irregularly shaped latex products. The method includes: fixing the irregularly shaped latex product to be measured on a measuring carrier and immersing it vertically in a measuring liquid at a constant rate; synchronously collecting the immersion depth and liquid level in real time; retrieving the carrier's drainage reference; calculating the instantaneous drainage cross-sectional area based on the rate of change of liquid level with depth; subtracting the carrier's discharge capacity to obtain the intrinsic instantaneous cross-sectional area; monitoring the area jump between sampling points; when the jump exceeds a threshold, using the slope before and after the abrupt change point for interpolation compensation; and performing depth integration on the compensated area to obtain the three-dimensional volume. This invention effectively eliminates transient liquid surface distortion in water immersion measurements, eliminates measurement errors caused by bubble rupture or capillary seepage, and improves the physical certainty of volume reconstruction for complex structures.

The utility model belongs to the field of limb volume measurement, and particularly relates to a device for measuring the volume of limbs, which mainly comprises a double-layer water tank measuring part, a funnel-shaped bearing part and a weighing device, and the double-layer water tank measuring part is formed by sleeving an inner-layer water tank and an outer-layer water tank. During use, limbs are slowly put into the inner-layer water tank filled with water, the water overflows and then flows into the funnel-shaped bearing part connected with the outer-layer water tank, water drop leakage and water loss are avoided, and the weighing device below the funnel-shaped bearing part can directly weigh and read the volume of the inflow water. The liquid storage cylinder of the weighing device is provided with the plugging type water outlet, after the weighing device is used, accumulated water can be discharged through the plugging type water outlet, the problem that water changing and water discharging of a traditional device are inconvenient is effectively solved, and cross infection between measuring persons is avoided.