30results about How to "Realize the test" patented technology

The invention discloses a reactor protection system two-out-of-three conforming maintenance bypass system, comprising a reactor protection system and a 2/3 conforming logic bypass unit, wherein the 2/3 conforming logic bypass unit comprises a rotary switch S which is provided with four gear contactors and also comprises twelve relays which are all normally open relays. Every four relays of the twelve relays are seen as one group; input ends of input circuits of the four relays of the first group are all connected to first gear contactors, input ends of input circuits of the four relays of the second group are all connected to second gear contactors, and input ends of input circuits of the four relays of the third group are all connected to third gear contactors. According to the system, a bypass device is arranged between a safety monitoring device and a safety logic device so that the protection system maintenance bypass function is added. Device on-line maintenance and test can be achieved; non-planned reactor shutdown probability due to device fault is reduced; the performability of reactors is increased; and production efficiency is guaranteed.

The invention relates to a multidirectional full-automatic three-dimensional impact testing machine for a for low-voltage metering meter box; the multidirectional full-automatic three-dimensional impact testing machine comprises a frame seat and a rotating body; the rotating body is slidingly connected on the frame seat; the frame seat is provided with an upper and lower lifting assembly; the upper and lower lifting assembly is provided with a horizontal sliding assembly; the horizontal sliding assembly is provided with a hose or a steel pipe, the bottom end of the hose or the steel pipe is provided with a hammer head, the horizontal sliding assembly is provided with a suction plate, and the hammer head is provided with an electromagnet. The multidirectional full-automatic three-dimensional impact testing machine has the advantages that the suction plate is triggered to suck the electromagnet through energizing the electromagnet, the hammer head is controlled to lift up, the electromagnet is divorced from the suction plate through power failure of the electromagnet, the hammer head triggered to lift up is thrown out to impact the low-voltage metering meter box, the hammer head after impacting can improve the energization of the electromagnet to rapidly recover onto the suction plate, the low-voltage metering meter box can bear same impact force during each time of impact, the accuracy of the test number is ensured, and the efficiency of the tests is improved.

The invention discloses an anti-scouring testing device for a road pavement material. The anti-scouring testing device for the road pavement material comprises a squeezing mechanism, a tray mechanism, a box body, a driving mechanism and a bracket, wherein the box body is arranged in the bracket; the tray mechanism is connected with the bracket by virtue of the box body; the squeezing mechanism is arranged at the upper part of the bracket; the squeezing mechanism is connected with the driving mechanism. By virtue of the anti-scouring testing device for the road pavement material, a drive rod is continuously pressed by a cam, so that a spring is continuously compressed and elastic force is continuously released for squeezing a roadbed; as a plurality of holes and grooves are formed in a rubber plate, the rubber plate can simulate a wheel for continuously squeezing the roadbed material; constant-pressure can be generated under the action of a pressure adjusting spring; water flow is generated in the gap of the roadbed material during squeezing and used for scouring the roadbed material; the squeezing time is controlled by a controller; tens of thousands of times of squeezing in the true environment are simulated in a short time; the damage of the roadbed material is observed after testing is finished; the roadbed material with an optimum process ratio is obtained by virtue of a comparison test; the anti-scouring testing device for the road pavement material is worthy of being popularized and applied.

The invention relates to an SOFC tail gas utilization research experiment system which comprises a gas supply device, a heating device, a combustion device and a measurement device which are connectedin sequence. The gas supply device is used for generating compressed air and SOFC tail gas with different component contents; the heating device is used for heating the compressed air and the SOFC tail gas; the combustion device is used for mixing the SOFC tail gas and compressed air and carrying out combustion reaction; the measurement device is used for measuring technological parameters in theSOFC tail gas combustion reaction process. Compared with the prior art, different working conditions of an SOFC stack can be simulated, and the system has the advantages that parameters are easy to adjust, control is accurate, and SOFC tail gas components can be efficiently configured.

The invention discloses a driving shaft system rack test device and method for an automobile. The driving shaft system rack test device includes a base, a temperature sensor, a control console, a driving motor mechanism and a load motor mechanism.The driving motor mechanism and the load motor mechanism are each provided with an upper shaft clamp and a lower shaft clamp, and a counter shaft is connected between the two upper shaft clamps , wherein cardan joints are arranged at the two ends of the counter shaft,a Y-direction force sensor and a torque sensor are arranged on the two lower shaft clamps of the the driving motor mechanism and the load motor mechanism correspondingly;a rotation mechanism, an X-direction prismatic pair and a Y-direction prismatic pair are sequentially arranged at the bottom of the driving motor mechanism from top to bottom; and the bottom part of the load motor mechanism is successively top-to-bottom provided with an X-direction prismatic pair and a Y-directionprismatic pair. According to the driving shaft system rack test device and method for the automobile, simulation experiments of multiple driving shaft performance parameters can be realized efficiently and accurately, experimental time and costs are saved, and effective technical support is provided for design development and performance experiments of automobile constant-speed driving shafts, especially for NVH performance verification.

The invention relates to a flap valve magnetic closing performance test device and a test method. The device comprises a valve seat fixing mechanism used for fixing a valve seat, a core barrel driving mechanism used for driving a core barrel to ascend and descend, a first magnetic part used for providing initial closing power for a valve clack, and a magnet linear displacement adjusting mechanism connected with the first magnetic part and used for adjusting the distance between the first magnetic part and the valve seat. A spring for providing initial closing power for the valve clack is replaced with a magnet, repulsive force generated by repulsion of the magnet is far larger than elastic force generated by the spring, and when a drilling machine horizontally drills or vertically drills upwards, elastic potential energy of the spring is not enough to provide enough energy, so that the valve clack overcomes friction force or gravity to rotate and close; and due to the fact that the valve clack is limited by the core barrel, energy generated by magnetic potential energy is accumulated and then is thoroughly converted into kinetic energy of the valve clack after the limitation of the core barrel is lost, the valve clack obtains large kinetic energy, and therefore it is guaranteed that the valve clack overcomes gravity or friction force to be rapidly closed, and rollover is prevented.

The invention relates to a rotary experiment platform and a flap valve closing performance testing device, and the platform comprises a platform which comprises a first pedestal, a second pedestal, a first rotation driving mechanism, and a second rotation driving mechanism. The first rotation driving mechanism is connected with the first base and used for driving the first base and the second base to rotate in the first direction. The second base is rotationally connected with the first base, and the second rotation driving mechanism is connected with the second base and used for driving the second base to rotate relative to the first base in the second direction; and the second direction is perpendicular to the first direction. The inclination of the platform can be adjusted, and the closing conditions of the flap valve in different drilling directions can be tested; and the second base can rotate relative to the first base, so that the valve clack and the valve seat integrally rotate around the valve seat in the axial direction, and tests of the valve clack at different inclination angles and different placement positions can be achieved under the combined action of the first base and the second base.

A non-casting steel wire rope tensile test clamping device is composed of a rack, a front clamping device, a moving cross beam, a force measuring device, clamping piece bases, clamping pieces and a rear clamping device. The front clamping device and the rear clamping device are arranged on the rack and are provided with the clamping piece bases and the clamping pieces; the rack is provided with the moving cross beam and the force measuring device. A hydraulic clamping mode and a hydraulic loosening mode are adopted for the clamping devices, clamping force is 5-15 Mpa, openings of the clamping pieces are in the shape of V, inclined lines staggering at 60 degrees are arranged on the surfaces of the clamping pieces, a small-inclination chamfer angle larger than 20 mm is formed at the tail end of each clamping piece, it is guaranteed that a steel wire rope is not damaged in a clamping mode, slippage is also avoided, the clamping piece bases are assembled on a clamping plate according to 15-degree wedge angles, friction between the clamping piece bases and the clamping plate is reduced, clamping is reliable, self-locking is prevented, and replacement of the clamping pieces is facilitated.

The invention relates to a rotary cylinder model test device which comprises a supporting tower. A cylinder rotatably sleeves the circumferential outer side of the supporting tower; a driver is fixedly installed in the supporting tower, a runner is installed at the output end of the driver, and the circumferential edge of the runner extends out of the supporting tower and is attached to the innerwall face of the cylinder. A rotating shaft is rotatably arranged on the upper part of the supporting tower, the upper end of the rotating shaft extends upwards out of the supporting tower, and a rotating disc is installed at the end of the upper end of the rotating shaft and fixedly installed on the inner wall face of the cylinder in the circumferential direction; a force balance is mounted on the bottom surface of the supporting tower; during use, the test device is installed on the wind tunnel test ground through the force balance; a short cylinder is installed above the cylinder through afastener to obtain a rotating cylinder with a preset length-diameter ratio, a driver drives a rotating wheel to rotate, the rotating wheel drives the cylinder attached to the rotating wheel to rotatethrough circumferential surface friction force, the rotary cylinder integrally rotates, and therefore rotating torque is measured through a torquemeter, and lifting resistance is measured through a force balance. The device is used for a rotary cylinder model test, rotation is reliable and stable, and the test effect is powerfully guaranteed.

The invention discloses a concrete permeation detecting device. The device comprises an extruding mechanism, a tray mechanism, a box, a drive mechanism, a support and a partition, wherein the box is arranged in the support, the tray mechanism is connected with the support through the box, and the extruding mechanism is arranged at the upper part of the support and connected with the drive mechanism; the partition is arranged in the middle of the box, and a water collecting module is arranged at the lower part of the partition. Water flow is generated in a gap of a roadbed material during extrusion and washes the roadbed material, the extruding time is controlled through a controller, tens of thousands of extrusion in the true environment are simulated in very short time, the amount of permeated water is observed after a test ends, the most real permeation information is acquired, and the phenomenon of data inaccuracy due to natural permeation is avoided. The concrete permeation detecting device is simple in structure, simple and convenient to operate and worth popularization and application.

The invention discloses a test box with a concealed wire type hinge box door. The test box comprises a box body, a box door, a test device, a controller, a cable, a cable protection device, a switch device and a fourth spring telescopic rod, wherein one end of the box door is rotationally arranged on the box body; the test device is arranged in the box body; the controller is fixedly arranged on the box door; the cable is used for connecting the controller with the test device; the cable protection device is arranged on the box body; the switch device is used for fixing the other end of the box door; and the two ends of the fourth spring telescopic rod are rotationally arranged on the box body and the box door respectively.

The invention relates to a bionic underwater vehicle swing propulsion performance integrated test platform comprising a bionic fish oscillator used for simulating a tested bionic underwater vehicle; the power driving system is used for driving the bionic oscillator to swing in the water tank; the high-speed imaging system is used for acquiring a swinging form image of the bionic oscillator in the water tank; the PIV speed measuring instrument is used for acquiring the speed of a fluid flow field in the water tank under the swinging action of the bionic swinging device in real time; the data measurement system monitors the noise radiation characteristics of the bionic oscillator in the motion state in real time and monitors the dependent variable of the connecting rod in the motion state of the bionic oscillator in real time; the information control system is used for sending a synchronous trigger signal to the power driving system, the high-speed imaging system and the data measurement system and uniformly controlling the working states of the bionic swinging system, the high-speed imaging system and the data measurement system; and the information processing system is used for evaluating the comprehensive performance of the bionic swinging propeller by integrating the swinging frequency, the swinging amplitude, the noise, the stress and the speed of the bionic swinging device.

The invention discloses an electromechanical integrated management system test verification platform with load power simulation, which comprises a test station operation table, an electromechanical system equipment rack, a power supply system, a tested finished product of an electromechanical system, an electromechanical system simulation system, a load simulation device, a test data acquisition, monitoring and analysis system, a configuration switching device, a test cable, a tested finished product of an electromechanical integrated management system, an avionics simulation and display system and a test control and automatic test system. The tested finished product of the electromechanical integrated management system and the tested finished product of the electromechanical system are installed on the electromechanical system equipment rack. Control computers of the power supply system, the electromechanical system simulation system, the load simulation device, the test data acquisition, monitoring and analysis system, the configuration switching device, the avionics simulation and display system and the test control and automatic test system are all placed on the test station operation table and are all connected through test cables. The platform has the advantages of flexible configuration and comprehensive test.

The invention discloses a reactor protection system with one out of two conforming maintenance bypass devices, including a reactor protection system including a 2/3 logical bypass unit, and a 2/3 logical bypass unit including a rotary switch S with four gear contacts , 2/3 logic bypass unit also includes 12 relays, 12 relays are normally open relays, every 4 of the 12 relays is a group, the input terminals of the input circuit of the first group of 4 relays are connected To the 1st gear contact, the input ends of the input circuits of the 4 relays in the second group are all connected to the 2nd gear contact, and the input ends of the input circuits of the 4 relays in the third group are all connected to the 3rd gear contact. By setting the bypass device between the safety monitoring device and the safety logic device, the maintenance bypass function of the protection system is increased. Realize online maintenance and testing of equipment, reduce the probability of unplanned shutdown due to equipment failure, improve the operability of the reactor, and ensure production efficiency.

The invention relates to a wide-temperature-range multi-model bearing loading test platform which comprises a workbench, a bearing rotating device, a bearing inner ring fixing device, a bearing outer ring fixing device, a bearing system propelling device and a temperature adjusting device. The bearing propelling device and the bearing rotating device are fixed on the working table, the bearing propelling device is connected with the bearing inner ring fixing device through a hydraulic cylinder, and the bearing propelling device adopts a hydraulic cylinder axial propelling mode to realize axial movement and loading. Through the application of liquid nitrogen and the thermal resistance wire, the working condition of a wide temperature field is realized, simultaneous axial and radial loading is realized through the inner and outer ring fixing device, and the test of different types of bearings is realized by utilizing the telescopic structure of the disc piezoelectric ceramic.

The invention relates to an electronic product environment test system with a sample protection function. The system comprises a direct-current power supply (1), a sample protection device (2) and anenvironment test box (3); the sample protection device (2) is connected with a direct-current power supply (1) and a sample (4) arranged in the environment test box (3); the sample protection device (2) comprises a direct-current power supply input terminal, a voltage-limiting and current-limiting unit and a power supply output terminal which are connected in sequence, wherein the direct-current power supply input terminal is connected with the direct-current power supply (1), and the power supply output terminal is connected with the sample (4). Compared with the prior art, the device has theadvantages of being capable of protecting a sample in an environmental test and the like.