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582 results about "Infrared heater" patented technology

An infrared heater or heat lamp is a body with a higher temperature which transfers energy to a body with a lower temperature through electromagnetic radiation. Depending on the temperature of the emitting body, the wavelength of the peak of the infrared radiation ranges from 780 nm to 1 mm. No contact or medium between the two bodies is needed for the energy transfer. Infrared heaters can be operated in vacuum or atmosphere.

Continuous pultrusion manufacturing method and production device for fibrous composite drive shaft

The invention provides a continuous pultrusion manufacturing method for a fibrous composite drive shaft. The continuous pultrusion manufacturing method comprises the following steps: preparing a pre-dipping belt, pre-forming a mould, curing and forming, and mechanically processing. A production device for the fibrous composite drive shaft comprises a yarn creel, a pre-forming mould, a curing and forming mould, a traction mechanism and a cutting mechanism, wherein the yarn creel and the pre-forming mould are provided with a winding and braiding mechanism respectively; the winding and braiding mechanism comprises a yarn collecting plate, an annular winding disc and at least one braiding roller which are arranged in sequence; and an infrared heater is also arranged between the braiding roller and the pre-forming mould. According to the invention, a rod piece of a drive shaft can be directly subjected to pultrusion through a mould without the traditional gum dipping process and is cut and gummed so as to finish the production of the fibrous composite drive shaft, so that the production cost of the fibrous composite drive shaft is reduced, and meanwhile, the defects of difficultly controlled gum content and high gum waste in the traditional gum dipping process, easily damaged fibers and the like are avoided, and the production quality is improved.
Owner:HENGSHEN

Heat flow compensation method for ground simulation test on infrared heating cage of spacecraft

The invention relates to a ground simulation test on a spacecraft, and discloses a heat flow compensation method for a ground simulation test on an infrared heating cage of a spacecraft. The method comprises the following steps of: arranging a radiation heat flowmeter on the surface of an experimental spacecraft; and supporting and connecting a plurality of heating loops through a frame to form the infrared heating cage. According to the invention, the method also comprises the following steps of: 1, sticking 20 layers of heat control multi-layer heat insulating components on the back of the radiation heat flowmeter; 2, arranging heating steel belts among the infrared heater loops; 3, tensioning the heating belts, and ensuring that the inner surfaces of the heating steel belts are parallel to the outer surface of the spacecraft; and 4, respectively arranging heat radiation power and heating time for each heating steel belt. The method solves the problems that low heat flow simulation is limited, heating areas are mutually interfered, the uniformity of heat flow is low and the like in the prior art, and has the advantages of improving the accuracy of applying external heat flow, improving the accuracy of simulating the spatial thermal environment and reducing simulation errors.
Owner:SHANGHAI SATELLITE ENG INST

Cylinder head thermal shock test bench based on pre-tightening force, and method thereof

ActiveCN102735561AAccurately Study and Analyze Thermal FatigueAccurate research and analysis of thermal shock stateStrength propertiesThermostatEngineering
The present invention discloses a cylinder head thermal shock test bench based on pre-tightening force, and a method thereof. The test bench comprises a test apparatus and a control system, wherein the test apparatus comprises a cylinder head requiring detection, bolts, a valve mechanism, infrared heaters, an insulation pad, a cylinder gasket, a sense heating coil, a pseudo body, a fixing table stand, a sense heater control system, an infrared heater control system, a water pump, a water tank, a heater, a thermostat, and the like. The cylinder head requiring detection is additionally provided with the valve mechanism. The cylinder head requiring detection, the insulation pad, the cylinder gasket and the pseudo body are sequentially connected, and are fixed with the bolts. The front side and the rear side of the cylinder head requiring detection are provided with the infrared heaters. The sense heating coil is arranged inside the pseudo body. The cylinder head requiring detection is connected with the water tank through a water pipe and is driven by the water pump. Forced water cooling is performed on the cylinder head requiring detection. The test apparatus is controlled by the control system. With the present invention, the pre-tightening force is considered as the mechanical constraint, such that the actual working conditions can be simulated realistically, and the thermal fatigue state and the thermal shock state of the cylinder head can be accurately analyzed so as to improve the credibility of the test results.
Owner:ZHEJIANG UNIV
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