7 results about "Performance measuring device" patented technology

The application relates to a bearing lubrication performance measuring device under outer ring driving, and belongs to the technical field of lubrication experiments. The device comprises an operation platform, a driving device, a loading device, a testing device and a torque acquisition system. The driving device is connected with the testing device through a shaft coupling, drives the testing sleeve to rotate to simulate the driving working condition of the bearing outer ring; the loading device applies and measures the load on the testing bearing through a thrust bearing, a pressure sensor and a butterfly spring; the torque acquisition system acquires torque data in the testing process in real time. The testing main shaft and the loading shaft system are internally provided with oil channels, lubricant can be supplemented in time, and the butterfly spring in the supporting sleeve plays the roles of buffering and keeping the load stable. The device can truly simulate the high-speed rotating working condition of the bearing outer ring, synchronously measure torque, load and rotating speed parameters, the platform level can be adjusted through adjusting screws, the bearing pre-tightening force is adjustable, the testing bearing is convenient to replace, and the device is suitable for the testing and evaluation of the lubrication performance of space bearings.

A kind of hydrogen energy LH2 / LNG ultralow temperature pull-off valve performance measuring device, installation groove is equipped in installation table upper end, left end chassis and right end chassis are distributed left and right with installation groove connection, high-pressure barrel assembly is equipped on left end chassis, high-pressure barrel cover assembly, hydraulic cylinder assembly is equipped on right end chassis and is connected with flange barrel assembly by tension rope, the left end of measured valve is connected with high-pressure barrel assembly, the right end of measured valve is connected with flange barrel assembly, high-pressure barrel cover assembly, flange barrel assembly and hydraulic cylinder assembly are connected with data control system;Form low-temperature multi-phase pull-off performance test loop, low-temperature sealing test loop and low-temperature high-pressure impact test loop.The main advantages are: the installation table, chassis, tension system integration prototype design, realize device structure simplification, manufacturing cost reduction, operation and safety and measurement accuracy are improved, meet the low-temperature sealing, high-pressure impact and axial, 45 ° and 90 ° multi-phase pull-off performance core index test requirements of measured piece.

This invention relates to the field of film shrinkage measurement technology, encompassing clamping plates, a fixture for preventing sample strip detachment, and a device for measuring the heat shrinkage properties of films. The fixture includes fastening bolts and two symmetrically arranged clamping plate bodies. The fastening bolts pass through and connect the two clamping plate bodies, clamping the sample strip between them. A first arc-shaped groove is formed on one side of each clamping plate body, and a second groove extending perpendicular to the length of the sample strip is formed on the opposite side. A rubber pad is placed within the second groove, and the rubber pad has several protrusions arranged in an array to compress the end of the sample strip. This clamping plate structure increases the friction between the clamping plate and the sample strip, making it less likely for the sample strip to detach. Simultaneously, the clamping force is evenly distributed, avoiding localized damage to the sample strip and reducing the risk of detachment. The control system of the film heat shrinkage performance measuring device combines the detected pressure data to control the device's operating status in real time, reducing wasted time and improving testing reliability.

The application provides a magnetic performance measuring device and a magnetic performance measuring method, the magnetic performance measuring device comprises a measurement control module, an integral amplification module, a feedback module and a test square; the feedback module is used for obtaining a secondary voltage signal of the test square and generating a feedback voltage signal according to the secondary voltage signal; the measurement control module is used for generating a sinusoidal voltage signal; the integral amplification module is used for comparing waveforms of the feedback voltage signal and the sinusoidal voltage signal; the measurement control module is further used for obtaining a primary current signal of the test square and the secondary voltage signal when the comparison result is that the waveforms of the feedback voltage signal and the sinusoidal voltage signal are consistent, and obtaining a magnetic performance measurement result according to the primary current signal and the secondary voltage signal. The application corrects the secondary voltage signal of the test square through the feedback module and the integral amplification module, so that a more accurate magnetic performance measurement result is obtained.

The application provides a high-voltage power supply performance measuring device, method and system, relates to the high-voltage power supply performance detection technical field, and the device comprises: a resistance voltage dividing circuit for receiving the high voltage output by the high-voltage power supply to be measured, converting into a low-voltage signal according to a preset voltage dividing ratio; an overvoltage protection circuit, which is connected in parallel with the output end of the resistance voltage dividing circuit, for voltage clamping of the low-voltage signal; a printed circuit board for bearing the resistance voltage dividing circuit and the overvoltage protection circuit, wherein the printed circuit board is physically separated into a high-voltage signal area for arranging high-voltage elements and a low-voltage signal area for arranging low-voltage elements and output interfaces through the isolation groove arranged on the board body, and the isolation groove is arranged through along the boundary between the high-voltage signal area and the low-voltage signal area, realizing the board-level high-voltage isolation. The application can realize the accurate measurement of the output voltage of the high-voltage power supply system, the measurement signal can be displayed and analyzed through an oscilloscope and other equipment, and data support is provided for the high-voltage power supply performance evaluation.