8results about How to "Solve measurement problems" patented technology

The utility model discloses a device for measuring the dry slag rate of liquid reduced lead. The device comprises a sampling mechanism for sampling reduced lead liquid from a liquid lead bag, and an ingot casting mold for preparing the reduced lead liquid taken by the sampling mechanism into a lead ingot for measuring the oxygen content and the sulfur content so as to calculate the dry slag rate of the reduced lead, the sampling mechanism comprises a sampling rod, a sealing plug matched with the sampling rod for sampling, and a handle connected to the outer wall of the sampling rod; the top end of an inner hole of the sampling rod is in a circular truncated cone shape facilitating installation of the sealing plug. The lower part of the sealing plug is in a big-end-up circular truncated cone shape matched with the top end of the inner hole of the sampling rod; the ingot casting mold is in a hollow cylinder shape with a bottom, and the interior of the ingot casting mold is in a big-end-up circular truncated cone shape so that a circular truncated cone-shaped lead ingot can be cast. The dry slag rate measuring device is simple in structure, rapid in dry slag rate measurement and high in accuracy, solves the problems that a conventional wet lead dry slag rate measurement period is long, measured data are easy to interfere, and measured values have deviation, and can better guide adjustment in the production process.

The embodiment of the invention discloses a current detection circuit and current detection equipment, the current detection circuit comprises a power supply input interface, a power supply output interface and a detection circuit, and the power supply output interface is connected with a circuit to be detected; the detection circuit comprises a shunt unit, a first connecting end, a second connecting end and a third connecting end, the shunt unit is connected between the first pole of the power input interface and the second connecting end, a first ampere meter is connected between the first connecting end and the second connecting end, and a second ampere meter is connected between the second connecting end and the third connecting end; when the current of the to-be-tested circuit is greater than a preset threshold value, the shunting unit is conducted, and the current drives the second ammeter to generate pointer deflection through the shunting unit; when the current of the to-be-tested circuit is smaller than a preset threshold value, the shunting unit is switched off, and the current drives the first ammeter to generate pointer deflection; wherein the first ampere meter and the second ampere meter are different in measuring range. The test efficiency and reliability can be improved.

This invention discloses a convenient-to-operate coaxiality testing device for a drive mechanism, comprising: an annular connecting mechanism for stable and fixed assembly with the output shaft end face of the drive mechanism; an intermediate connecting member connected to the annular connecting mechanism for multi-angle adjustment of the annular connecting mechanism; a dial connecting block connecting the intermediate connecting member and a dial indicator; and a dial indicator whose pin is in contact with the output shaft of the drive mechanism. This invention features a simple structure, practical function, and can quickly and accurately measure the coaxiality of a drive mechanism. It boasts high assembly and adjustment efficiency, high flexibility, strong applicability, and low cost, and can be extended to other similar products.

The utility model discloses a device used for measuring converter transformer valve side AC voltage, comprising a main body unit composed of a resistance-capacitance voltage divider and used for dividing AC-DC superposed voltage; and the secondary voltage dividing unit is connected in parallel with a capacitive voltage divider on an output terminal of the resistance-capacitance voltage divider and is used for isolating direct current voltage from the direct current component output by the main body unit. The problem of converter transformer valve side AC voltage measurement is solved.

The utility model discloses a gas production testing device which comprises a communicating pipe, a driving piece, a split piece, a gas pressure detection piece, a valve, a first collector and a weight detection piece, an inlet of the communicating pipe directly faces the driving part, the driving part is configured to drive the end to move close to or away from the inlet of the communicating pipe, the communicating pipe is sequentially provided with a split part, an air pressure detection part, a valve and a first collector in the flowing direction, and a weight detection part is arranged at the bottom of the first collector. The device has the beneficial effects that the communicating pipe is arranged to export the gas produced by the battery, the gas pressure detection piece is matched to detect the gas production speed, the weight detection piece is matched to detect the gas production weight, and the first collector is used for collecting the produced gas, so that the complete data of the gas produced in the formation process is finally collected, and the gas produced in the formation process is analyzed.

The application provides a method for measuring and calculating the included angle between two rotating shafts, and belongs to the technical field of aero-engines. The method comprises the following steps: introducing a third smooth plane; obtaining the end face runout of the first smooth plane measured by a displacement sensor on the first rotating shaft when the first rotating shaft rotates, and obtaining a first measurement result; obtaining the end face runout of the first smooth plane measured by a displacement sensor on the second rotating shaft when the second rotating shaft rotates, and obtaining a second measurement result; obtaining the included angle between the two rotating shafts and the smooth plane; obtaining the angular displacement alpha and beta of the first rotating shaft corresponding to the minimum value in the first measurement result and the second measurement result, respectively; and finally, drawing the direction vectors of the first rotating shaft and the second rotating shaft in a three-dimensional Cartesian coordinate system, and solving the included angle between the two rotating shafts according to the definition of vector inner product, thereby solving the problem of measuring and calculating the included angle when the radial reference surfaces of the two rotating shafts are not completely exposed.

A device for precisely measuring the levelness of a plate straightening machine roller belongs to the technical field of plate straightening machine maintenance equipment and is used for precisely measuring the levelness of the plate straightening machine roller. According to the technical scheme, a measuring base frame is a rectangular box body, a plurality of sliding blocks are placed in the box body of the measuring base frame, the sliding blocks are in sliding fit with the inner wall of the box body of the measuring base frame, a vertical insertion hole is formed in the middle of each sliding block, a guide column on the upper portion of a measuring arm penetrates through the insertion holes of the sliding blocks, and two inclined measuring supporting arms are welded to the lower portion of the measuring arm. The two measuring support arms are clamped on the upper surface of a measured roller, the lower end of the dial indicator is fixedly connected to the upper surface of the measuring base frame, the head of the dial indicator is opposite to the upper end face of the guide column, and the two ends of the measuring base frame are respectively connected with a support. The levelness measuring device can realize accurate measurement of levelness of the working roller and the supporting roller of the straightening machine roller, is suitable for levelness measurement of roller surfaces with different roller diameters and roller intervals, can be used in a limited space, and provides measurement data for assembly adjustment and online detection.

This invention provides a non-contact residual current detection method and related equipment, comprising: deploying a magnetic sensor array on a target wall to acquire measured values ​​of magnetic induction intensity components and inputting them into a particle swarm optimization algorithm; establishing a mathematical model between the magnetic induction intensity components and live wire current, neutral wire current, concealed installation depth, and horizontal offset, and constructing a dataset based on the upper and lower limits of conductor positions and currents in actual working conditions, all of which are input into the particle swarm optimization algorithm; calculating the calculated value of the magnetic induction intensity component at each particle position based on the mathematical model, and the sum of squares of the differences between each calculated value of the magnetic induction intensity component and the measured value of the magnetic induction intensity component; using a constructed penalty function to superimpose the out-of-bounds amount as a penalty term onto the sum of squares of the differences, obtaining the optimal position of the particle swarm after iteration termination as the optimal solution; obtaining the residual current detection result based on the optimal solution; this invention achieves non-contact detection of residual current in concealed wiring without damaging the wall or inserting conductors.