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121results about How to "Reduced opening size" patented technology

Pressure-bearing type solar collector based on groove-type parabolic mirror

The invention relates to a pressure-bearing type solar collector based on a groove-type parabolic mirror. The parabolic mirror is characterized by comprising an elliptical reflecting canister, a housing, a groove-type parabolic condenser and a pressure resistant metallic heat collection pipe group, wherein the reflecting canister adopts an elliptical stainless steel mirror reflecting canister or a glass reflecting canister; a light inlet is formed in the elliptical reflecting canister; the housing is arranged outside the reflecting canister; a gap between the housing and the reflecting canister is filled with heat insulating materials; the pressure resistant metallic heat collection pipe penetrates the reflecting canister; and the light condensation focus of the groove-type parabolic condenser is positioned at one focus near or around one side of the light entrance port. According to the solar collector provided by the invention, the heat absorbing medium is positioned in the pressure resistant metallic heat collection pipe groups in the black body cavity, so as to enable the whole heat-collector to manufacture the pressure-bear structure smoothly, the requirement of the process and material is decreased greatly, the manufacturing cost of the pressure-bearing type solar collector based on the groove-type parabolic mirror is decreased, the performance of the heat collector is more steady and reliable, and the safety coefficient is high.
Owner:SUNSHORE SOLAR ENERGY IND +2

Preparation methods for soluble core mould and nonmetal-lining or no-lining fibre winding container

InactiveCN103317628ALow costSimple demoulding methodPolyvinyl alcoholFibre reinforcement
A preparation method of a solube core mold comprises: blank moulding of a mortar mould: a) the ingredients of the mortar die consists of quartz sand, polyvinyl alcohol and water with a weight ratio of 100:1-2:6; b) the inner sleeve of the mortar mould is sleeved in a moulding mould, then adding the uniformly stirred ingredients of the mortar mould into the moulding mould until the moulding mould is full; c) demoulding; and d) solidifying; and a mandrel is penetrated in the mortar mould, the mandrel and the mortar mould are fixed in a circumferential direction by using the inner sleeve of the mortar mould and fixed in an axial direction by using a locking ring. A preparation method of a nonmetal-lining or no-lining fibre winding container comprises: infiltrating a fibre reinforced material in a resin solution, winding the fibre reinforced material on the soluble core mould in a circumferential direction and in a longitudinal direction by using a winder, solidifying, washing with water and demoulding. By using the container, demoulding can be finished by water washing. The soluble core mould is especially suitable for preparing composite material containers with a complex-shape internal profile as well as hard to demould, is low in cost and reusable in raw materials.
Owner:北京玻钢院复合材料有限公司
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