48results about How to "Uniform thermal expansion" patented technology

A gas turbine configured to prevent eccentricity of a rotor (14) due to heat is installed with a strut (23), an outer diffuser (24), an inner diffuser (25), a strut cover (26), and a partition wall (28), wherein the gas turbine includes an inflow hole (31) for cooling air (W), a first flow passage (R1) formed between a casing wall (21) and the outer diffuser (24), a second flow passage (R2) formed between the strut (23) and the strut cover (26), a third flow passage (R3) formed between the inner diffuser (25) and the partition wall (28), and an outflow hole (51) installed in the inner diffuser (25).

The invention discloses a thermal expansion coefficient measuring device based on engineering thermophysics. The thermal expansion coefficient measuring device comprises a support base, wherein a measuring shell is mounted at the top of the support base; a front transparent glass layer and a rear transparent glass layer are respectively arranged at the front end and the rear end of the measuring shell; a uniform heating mechanism is arranged inside the measuring shell; the uniform heating mechanism comprises heat conduction blocks which are arranged inside the measuring shell and are uniformlydistributed; holding cavities are formed inside the heat conduction blocks; electric heating plates are arranged inside the holding cavities; thermal expansion coefficient measuring mechanisms are arranged inside adjacent heat conduction blocks; a gantry is arranged outside the measuring shell; an adjusting photographing mechanism is arranged on the gantry. By adopting the thermal expansion coefficient measuring device, measurement of an object to be measured can be prevented from being affected by a measuring structure, meanwhile, temperatures inside the device can be uniformly distributed,the precision of measurement results can be ensured, in addition, thermal expansion coefficients of multiple objects can be simultaneously measured, multiple times of measurement can be carried out toobtain an average value, and thermal expansion coefficients of multiple objects can be simultaneously measured.

The invention relates to a three-dimensional opto-acoustic imaging system based on an acoustic leans and a sensor array and a method. The system is a cube experimental table and mainly comprises a laser device, a beam expander, the phonon crystal lens, the opto-acoustic sensor array, a data bus, a ground glass container, a data acquisition module and a computer for image processing, center points of four side surfaces of the cube ground glass container are irradiated by laser, so that a sample is uniformly irradiated by the laser via dispersion of ground glass, and is uniformly heated and expanded, acoustic signals generated by expansion of the sample focus to form a beam, the opto-acoustic sensor array, the data acquisition module and the computer for image processing acquire and record opto-acoustic three-dimensional imaging data in real time, and a three-dimensional light absorption distribution image of the detected sample can be directly seen from a display via image processing. The three-dimensional opto-acoustic imaging system has the advantages of complete functions, stable performance, low cost and the like, and can be widely applied to the fields of biology, medical science, material analysis and the like.

The invention provides a cooling system of an engine cylinder, belonging to the technical field of motorcycle engines and solving the problems of complicated structure, difficult processing, poor stability, and the like of the cooling system of a traditional engine cylinder. The cooling system of the engine cylinder comprises an engine cylinder body with a cylinder hole, one side of the engine cylinder body is provided with a cam chain chamber for mounting a cam chain, heat radiating ribs are arranged at other sides of the engine cylinder body, the cam chain chamber is internally provided with a heat-conducting piece, both outer walls of the heat-conducting piece are respectively attached to the outer lateral wall of the engine cylinder body and the inner lateral wall of the cam chain chamber, and the heat-conducting piece is made from a metal material. The invention has the advantages of good radiation effect, convenient processing and mounting and engine vibration and noise reduction.