38 results about "Nuclear test" patented technology

The invention provides a wind tunnel test flow-guiding device. The device comprises a base, a flow guiding assembly, an angle adjusting piece and a calibration assembly, a test piece to be examined isarranged on the flow guiding assembly, the flow guiding assembly is used for smoothly transitioning air flow at a wind tunnel air outlet to a surface of the test piece to be examined, the angle adjusting piece is used for adjusting the angle of attack of the test piece to be examined to match a thermal environment state of the set test piece to be examined, the calibration assembly is used for measuring the thermal environment state of the test piece to be examined to calibrate the thermal environment state of the test piece to be examined, and when the thermal environment state measured by the calibration assembly is different from the set thermal environment state, the wind tunnel test flow-guiding device adjusts the angle of attack of the test piece to be examined through the angle adjusting piece to reach the set thermal environment state of the test piece to be examined. The technical scheme of the invention is applied to solve the technical problem in the prior art that a certain section of cabin cannot be examined separately.

The invention discloses a mechanically-sealing four-coaxial cable termination technology. The technology is characterized by comprising the steps of 1) preparation of termination; 2) processing a spiral copper armored casing; 3) welding a cable sealing support; 4) inspecting the appearance after welding; 5) leak detection; 6) preparation of a three-coaxial cable joint; 7) inspecting the size of the completed three-coaxial cable joint; and 8) installing a sealing device. According to the invention, the defect that the first pass yield of the coaxial cable of a nuclear power station is low traditionally is overcome, the first pass yield can reach 100% according to verification in the San Men nuclear power station AP1000, a lot of materials and labor force can be saved, the joint is more stable and safer in operation due to advancement of the technology, and a test channel of an out-of-core nuclear test system can be used for 60 years, which is 20 yeas more than that of traditional products of the same kind, under severe environments of high temperature, high humidity and high irradiation.

The invention discloses a monitoring method and device for a slave core state, relates to the technical field of CPU application, provides a new monitoring method, and realizes the state monitoring of a slave core while ensuring that the performance of the CPU is not reduced. The embodiment provided by the present invention is applied to a logic device, the logic device is connected with the CPU to be tested, and at least includes a timer module in this logic device, the main core of the CPU to be tested is configured with N channels, and these channels are connected to the slave to be tested nuclear correspondence. First, set a timing period, and when the timing period expires, continuously transmit N pulses, and monitor the slave core to be tested according to the time division multiplexing principle according to the time divided by the N pulses. The technical scheme provided by the invention is mainly applied in the monitoring process of the CPU slave core.

The invention discloses a biaxial stress state test piece realized by uniaxial loading of a spherical working section. The lateral parts are symmetrical. There are spherical depressions and special-shaped holes designed on the working section; among them, the spherical depressions are designed on the front and back of the working section, located in the center of the working section; there are four special-shaped holes, which are respectively opened on the working section by its two angle bisectors on the four equally divided parts. The loading of the test piece is realized by a uniaxial fatigue testing machine. Under the designed spherical depression and special-shaped hole, a multiaxial stress state of horizontal tension and vertical compression is finally generated in the center of the entire test piece, forming a typical Tension / compression multiaxial stress state. The invention can realize the simulation of the tension and compression biaxial state at the center of the turbine disk, can partially replace the component-level assessment test, shorten the structural design period, and save the test cost.

The invention provides a heat examining tester for a structure with pretightening force adjustment, and belongs to heat examining testers for heat sealing and insulation structures with pretighteningforces under effect heat deformation coordination. The tester mainly comprises a heating component, deformation coordinating plates, a loading device, an installation adjustment structure and pressuresensors, the two deformation coordinating plates are arranged in left-right symmetry, the loading device is mounted at one end of the two deformation coordinating plates, test members to be examined,bearing structures and pretightening force applying plates are successively arranged in the outer sides of the two deformation coordinating plates respectively symmetrically, the two pretightening force applying plates are compacted by the installation adjustment structure, and the heating component heats the test members to be examined in a non-contact way. Thus, pretightening force application,deformation coordination simulation and heating control are examined accurately by simulation, and the tester is suitable for heat examination test of the heat sealing and insulation structures withpretightening forces of a high speed aircraft.

Embodiments of the present invention provide a wind tunnel test device and a design method thereof, which relate to wind tunnel test assessment technology and can solve the problem that it is difficult to conduct multiple state assessments in a single wind tunnel test. The test and assessment device of the wind tunnel has the characteristics of multi-stage compression, and the surface profile of the multi-stage compression area is a line segment L bent by N segments 1 , L 2 , L 3 ..., L n pose, L 0 It is the length of the flow direction of the test section with an angle of attack of zero. Through the idea of ​​continuously and gradually changing the angle of attack, a stable step-type heat flow distribution along the flow direction can be obtained in the same vehicle wind tunnel test, and it is possible to simultaneously assess the material in a variety of conditions in one vehicle test. The response in the thermal state, while considering the purity of the flow field, intersects the multi-stage compression oblique shock waves at one point, avoiding the multi-channel shock wave reflection from interfering with the flow field. It overcomes the disadvantages of low efficiency, long period and high cost of the original material assessment test, greatly shortens the test period, and has high engineering application value.

The invention discloses an inspection system and an inspection method for one-time pressure-passing and synchronous phase verification of an electrical system. The invention belongs to the technical field of one-time pressure and simultaneous phase verification inspection of electrical systems. The system and inspection method are to carry out one-time voltage and simultaneous phase verification inspection before the electrical system is powered, so as to ensure that the electrical system is synchronized with the power supply and operates normally. The output terminal of the generator and one end of the high-voltage factory transformer are respectively connected to the input terminal of the main transformer; the switch blade terminal of the working power incoming line switch DL1 and the detection terminal of the working power incoming line voltage transformer PT1 are respectively connected to the high-voltage factory transformer. On the other end; the two ends of the low-voltage factory transformer are respectively connected to the three-phase voltage regulator and one end of the feeder switch DL3, and the three-phase experimental power supply is connected to the three-phase voltage regulator; the switch knife end of the backup power incoming switch DL2 and the detection end of the standby power incoming line voltage transformer PT2 are respectively connected to one end of the high voltage standby transformer.

The present invention proposes a kind of embedded core test packaging scan chain design method, including step (1): algorithm initialization; step (2): de-initialization step (3): if the end condition is not satisfied, continue, otherwise go to step (12 ); Step (4): Estimate the objective function max(s i ,s o ) value; step (5): adjust food sources and enemies; step (6): adjust individual separation S, individual direction A, individual cohesion C, individual food F, position D and weight of individual enemies w; Step (7): Evaluate S, A, C, F, and D; Step (8): Adjust the neighborhood radius; Step (9): Adjust the location vector; Step (10): Validate according to the bounds of the variables and Modify the new position, if the value of the new position is less than 1, set its value to 1, if it is greater than N, then set its value to N; step (11): go to step (3); step (12): Output the result.

The invention relates to the technical field of core nuclear measurement systems of nuclear power plants, in particular to a method for checking the correctness of software and hardware connections of a neutron temperature measurement channel. The inspection method is as follows: adjust the power of the unit and the position of the control rods; select n control rods as the execution group; insert the i-th control rod down, and measure the power peak factor of the area around the control rods before inserting the rods; Inserting the control rods down to the bottom of the core, measuring the power peak factor after the rods are inserted in the area around the control rods; lifting the control rods to the initial height; calculating the neutron temperature measurement channel in the area around the control rods Relative power change value; make i=i+1, judge whether i>n is established, if not established, then repeat the above steps; if established, then judge the neutron temperature measurement channel software and hardware at the corresponding position according to the relative power change value The correctness of the connection. The inspection method can quickly and accurately judge the correctness of the software and hardware connection of the neutron temperature measurement channel, and is safe and reliable.