65results about How to "Improve test conditions" patented technology

The invention relates to a small-sized environmental test chamber for pollutant release researches, which comprises a chamber body, an air generation system, a temperature-humidity control system, a sampling system and an air purifying device. By utilizing the small-sized environmental test chamber for simulating to approach real space, the temperature, the humidity and the air interchange ratio inside the chamber body can be controlled according to experimental conditions with low cost and simple operation. Meanwhile, the chamber body is provided with the purifying device, which can purify air samples at an air inlet and an air outlet so as to improve experimental conditions, be beneficial to acquiring real and reliable test data and avoid polluting indoor air.

A semi-physical simulation method of an aircraft electric system based on an AGENT modeling technique comprises a method for a virtual operating environment modeling method of intelligent control and test of an aircraft power system, a method for setup of a simulation model of a modern aircraft power system based on a multi-AGENT technique, a method for knowledge base modeling supporting decision assessment, a method for achievement of a semi-physical simulation platform, and a performance assessment method of the aircraft electric system. The method fully embodies a complete simulation model of distributed power control of a modern large aircraft, overcomes disadvantages that the aircraft power system is simulated mainly based on pure software at present and the effect of a load model on the aircraft power system cannot be well considered mostly; on the basis of setting up the model of the aircraft electric system based on the AGENT technique, with the adoption of a high-speed data collecting card, the method can conveniently form an effective semi-physical simulation verification platform together with a voltage regulator of an aircraft power generator and related detecting devices to verify reliability and safety of excitation control of the large aircraft electric system in real time.

The invention provides a preparation method for ultra-fine grain pure titanium through equal channel angular pressing. According to the invention, test conditions are improved on the basis of the prior art, a to-be-extruded sample is designed to be a copper-wrapped titanium rod, so frictional force generated during contact between the sample and a channel is reduced during extruding; extruding force is decreased to no more than 150 KN, so experimental operability is improved, and refining of industrial pure titanium can be finished at room temperature under small extruding force through equal channel angular pressing. At room temperature, the phenomena of restoring and recrystallization softening of crystal grains during refining hardly occur, so a substantial crystal grain refining effect is obtained and a high-strength industrial pure titanium block can be obtained through few times of extruding. According to results of testing of mechanical properties of the prepared ultra-fine grain pure titanium, the ultra-fine grain pure titanium has substantially improved comprehensive mechanical properties, block ultra-fine grain pure titanium can be used in practice, and the application scope of the ultra-fine grain pure titanium is broadened.

The invention relates to a tension force transducer which is mainly used for testing tension mechanical properties of materials, and comprises a force measurement part, a mounting part for mounting a test piece, and a strain gage pasted on the surface of the force measurement part, wherein one end of the mounting part is connected with the force measurement part; the force measurement part and the mounting part are in an integral structure; a center line of the force measurement part in the thickness direction and a center line of the mounting part in the thickness direction are in the same straight line; the mounting part is provided with a groove for placing the test piece; the groove and the strain gage are located on the same side; a notch is formed at the other end of the mounting part and located in an extension line in the length direction of the force measurement part; the notch is communicated with the groove; the width of the notch is less than that of the groove; and the test piece extends out of the mounting part through the notch. The tension force transducer further comprises a cover plate arranged above the groove, wherein the cover plate is clung to and fixedly connected with the mounting part by a plurality of fasteners. The tension force transducer is small in size, simple in structure, low in cost and good in test effect.

The invention discloses a vortex-induced vibration testing system suitable for multi-oscillator coupled vibration research, and relates to the field of fluid mechanics and experimental facilities. The vortex-induced vibration testing system is formed by three parts of a fixed supporting module, a slidable supporting module and a sliding system; the slidable support module can freely slide on the fixed supporting module, and meanwhile the sliding system can do vertical linear reciprocating motion on the slidable supporting module through a tension spring. The vortex-induced vibration testing system is not only suitable for a single-oscillator vortex-induced vibration test, but also suitable for a two/more-oscillator vortex-induced vibration test under the condition of various arrays. Meanwhile, the system can achieve various configuration forms such as series connection, parallel connection, inclined configuration and series-parallel coupling configuration among multiple oscillators, expands the research range of vortex-induced vibration, and supplies good testing conditions to multi-oscillator coupled wake galloping research.

The invention discloses a multi-feed-source array near-field simulator based on a compact field system. The multi-feed-source array near-field simulator can realize high-quality near-field spherical wavefront simulation based on compact field offset focus control and a feed source array excitation source technology. The offset-focus irradiation of the reflecting surface is realized by adjusting the position of an excitation source; the near field of the biased reflecting surface is equivalent to the near field wavefront of the spherical wave source at different positions; and when the positionof the excitation source is continuously changed, the position of the equivalent spherical wave source is continuously changed, the position of the equivalent source of the near-field spherical wavefront is continuously adjustable in a large range, and an amplification relation exists between the adjustment amount and the expected control amount, that is, near-field simulation in a large-distancerange is compactly realized. The excitation source is in the form of a feed source array, and the high-quality quasi-spherical wavefront can be synthesized by weighting the amplitude and phase of thefeed source array unit, so that the problem of large wavefront distortion of spherical waves generated by single feed source excitation is solved. According to the invention, a high-quality sphericalwavefront equivalent near-field electromagnetic environment adjustable within a large distance range is realized by using a compact field.

The invention provides a human serum CCL2 enzyme-linked immunosorbent assay kit as well as preparation and use methods thereof. The human serum CCL2 enzyme-linked immunosorbent assay kit comprises an enzyme-labeled reaction plate, a CCL2 standard product, biotin-labeled antihuman CCL2 antibodies and streptavidin-labeled horse radish peroxidase, wherein the enzyme-labeled reaction plate is coated with mouse-anti-human CCL2 monoclonal antibodies. The preparation method of the human serum CCL2 enzyme-linked immunosorbent assay kit comprises the steps of preparing the enzyme-labeled reaction plate, the CCL2 standard product, the biotin-labeled antihuman CCL2 antibodies and streptavidin-labeled horse radish peroxidase, wherein the enzyme-labeled reaction plate is coated with the mouse-anti-human CCL2 monoclonal antibodies. The use method of the human serum CCL2 enzyme-linked immunosorbent assay kit comprises the steps of adding samples, biotinylation antibodies and horse radish peroxidase, and carrying out color developing and terminating.

The invention relates to a missile simulation launching device. The missile simulation launching device comprises a test platform, a guide rail, a simulation missile, a missile mounting rack, an air pressure thrust system, an air pressure resistance system and an air compressor, wherein the test platform is a cubic structure frame; the guide rail is fixedly mounted on the test platform; the upperpart of the missile mounting rack is fixedly connected with the simulation missile, and the lower part of the missile mounting rack is slidably connected with the guide rail; the air pressure thrust system is arranged at the rear end of the simulation missile; the air pressure resistance system is arranged at the front end of the simulation missile; the air pressure thrust system and the air pressure resistance system are both connected with an air compressor air channel; and the simulation missile and the missile mounting rack do reciprocating motion between the air pressure thrust system andthe air pressure resistance system. The pressure of a power source of air is adjusted through the air pressure thrust system, the launching thrust of the simulation missile is specifically and accurately controlled in data, and the operation is more accurate than ejection; and the thrust action time can be controlled, and thus the requirement for simulating a real continuous high-overload environment is met.

The invention provides a content measurement method for a trace amount of aldehydes or ketone substance in transformer insulation oil. The content measurement method comprises the steps of preparing amethanol solution containing a to-be-measured aldehydes and/or ketone substance as a standard addition liquid; adding the standard addition liquid into to-be-measured transformer insulation oil, andpreparing a series of samples; performing separation detection by a headspace sampling method and by a gas chromatography-FID or gas chromatography-mass spectrum combination method, and acquiring chromatogram peak area of a corresponding to-be-measured substance in the samples; and building a standard curve according to the chromatogram peak area and the addition concentration of the samples, performing fitting to obtain a linear equation, and calculating the content of the to-be-measured substance in the to-be-measured insulation oil according to the linear equation. By the measurement method, test of various types of aldehydes or ketone substances can be achieved by sampling in one time, quantitative and qualitative measurement of the aldehydes or ketone substances in the insulation oilis achieved, the content measurement method is good in repeatability and stability, and new judgment standard and idea is provided for improvement of aging estimation of a cellulose insulation material in a transformer.

The invention discloses a motor hydrostatic test tank used for a deep well submersible electric pump, and relates to the pressure container technical field. The motor hydrostatic test tank comprises atop cover, which is provided with a cable sealing connector. The cable sealing connector comprises a lens pad, a stud bolt, a blind plate, a conical pad, a conical base and a supporting plate. The middle part of the top cover is provided with a first through hole for passing through a cable of an experimental motor, and the lens pad is arranged between the first through hole and a conical sealingsurface on the blind plate. The upper end of the conical base is fixedly connected with the lower end of the blind plate in a sealed manner, and the middle part of the conical base is provided with the conical pad, and in addition, the conical pad is attached to the conical base through the conical surface, and the conical pad is used to form sealed cooperation between the outer surface of the cable and the blind plate, and the lower part of the conical pad is provided with the supporting plate. The invention is advantageous in that the working environment (high pressure) of the motor for coal mine or other deep well operations is simulated so as to test the performance of the motor, and the sealing performance of the conical pad and the outer surface of the cable are improved.

The present invention relates to an engine parameter collection box. The engine parameter collection box comprises a main control module, a power module and a plug board part, the main control moduleis connected with the power module, the power block is connected with the plug board part, and the main control module can achieve centralized collection of multiple types of signals of an engine andcan convert the signals to RS422 bus signals for output. The engine parameter collection box can effectively reduce the errors caused by long-distance concentration of source end signals on the engineand can ensure the real and effective signals.