53results about How to "Minimize thermal expansion differences" patented technology

A heat exchange reactor including a housing, a plurality of tubes mounted in the housing and configured to carry a first fluid, and a baffle having a plurality of holes receiving the tubes. The baffle is configured to guide a second fluid provided within the housing to flow in a direction generally perpendicular to the tubes. The reactor includes various configurations for minimizing adverse effects of thermal expansion of the baffle and the tubes. The reactor is configured to minimize mechanical interference between the baffle and the tubes in both an operational state and a non-operational state, for example, by shaping the holes in the baffle to take into account thermal expansion. The reactor also includes a thermal insulator along a length of the tubes at a large temperature gradient zone within the reactor. The reactor further includes a heat transfer fin in contact with only one of the tubes.

A steam turbine 20 is provided with a casing 109, a turbine rotor 25 disposed through the casing 109, and labyrinth portions 50, 55 which are disposed at the boundary between the casing 109 and the turbine rotor 25. The steam turbine 20 is further provided with a sealing steam pipe 65 for supplying sealing steam to the labyrinth portions 50, 55 and a gas supply pipe 60 for supplying the labyrinth portions 50, 55 with a cooling gas for cooling the turbine rotor 25 or a heating gas for heating the turbine rotor 25.

The invention relates to a self-temperature limiting heat tracing belt with a dual-layer resin conductor and a manufacturing method thereof. The self-temperature limiting heat tracing belt is characterized by comprising a metal conductive electrode, a resin conductor layer, a heating element and an insulation layer. A shielding layer or a sheath can also be arranged outside the insulation layer. In the invention, the formulas of the resin conductor layer and the heating element are improved, and through the implementation of the technical scheme of the invention, and the problems existing in the aspects that the power attenuation of the traditional heat tracing belt is serious, the starting current of the traditional heat tracing belt becomes big, the heat tracing belt is burnt out frequently, the performance is not stable and the like can be well solved. The invention greatly improves the performance of the heat tracing belt, has the advantages of small starting current and high heat tracing belt temperature and is suitable for the industrial application.

The present invention describes a roll for use in glass manufacture, especially non-dusting TFT glass. The roll may include a hollow fused silica cylinder. End caps are mechanically fixed to the roll. Pulling flats are fixed in place by inner and outer end plates. A compression fitting secures at least the outer end plate to the roll. The roll may be reinforced with an internal metal rod that is secured to the shaft by a plurality of supports. The supports accommodate differences in thermal expansion.

The invention relates to a method for discharging the condensation water of a still kettle, and the method belongs to the technical field of pressure containers. The still kettle is heated for temperature rise, when the temperature in the still kettle is equal to or lower than 100 DEG C, a controller outputs signals at intervals to open a pneumatic valve arranged on a header tank for discharging water according to the detected liquid level or the set discharge interval time of condensation water; when the temperature in the still kettle is larger than or equal to 100 DEG C, the controller output signals at intervals to open the pneumatic valve arranged on the header tank for discharging water according to the detected temperature difference between the upper and the lower parts of the kettle wall or the liquid level, at the same time, a thermal steam trap on a collecting pipe arranged between the bottom part of the still kettle and the header tank also discharges water. The method has the advantages that the condensation water of the still kettle can be completely and fast discharged; the use is safe and reliable; and the normal use of the still kettle can be ensured.

The invention discloses a circulating fluidized bed combustion device with an internal double-inlet cyclone separator. The combustion device comprises a furnace chamber body (1), the double-inlet cyclone separator (2), a refeed downcomer (3) and a gas-water separator (10), wherein the inner wall of the vertically arranged furnace chamber body (1) is provided with a water wall; the furnace chamber body (1) comprises a furnace chamber dense-phase area (A), a furnace chamber lifting area (B) and a furnace chamber separating area (C) that are sequentially arranged from the bottom to up; the double-inlet cyclone separator (2) is coaxially arranged with a bed body in the furnace chamber separating area (C); the upper part of the flue gas inlet of the double-inlet cyclone separator (2) is arranged at the upper part of the furnace chamber separating area (C). According to the invention, gas-solid separating efficiency is improved, heat loss is reduced and boiler heat efficiency is improved.

A manufacturing method of a package carrier is provided. An insulation substrate having an upper surface, a lower surface, plural cavities located at the lower surface and plural through holes passing through the insulation substrate and respectively communicating with the cavities is provided. Plural vias is defined by the cavities and the through holes. A conductive material filling up the vias is formed to define plural conductive posts. An insulation layer having a top surface and plural blind vias extending from the top surface to the conductive posts is formed on the upper surface. A patterned circuit layer filling up the blind vias, being connected to the conductive posts and exposing a portion of the top surface is formed on the top surface. A solder mask layer is formed on the patterned circuit layer and has plural openings exposing a portion of the patterned circuit layer to define plural pads.

The invention provides a preparation method for a diamond embedded tool with high holding force. The preparation method comprises the following steps of first, wrapping a diamond, namely, taking soldering powder, metal powder and hard material powder in proportion, uniformly mixing to prepare a substrate, and wrapping the diamond using the mixed powder substrate by a diamond granulating method; second, pre-sintering; third, preparing a base body, namely, weighing and mixing body metal powder in proportion, granulating, weighing and uniformly mixing the body and the diamond fired in the secondstep in a certain proportion, and granulating to form the base body; fourth, performing cold pressing and forming; and fifth, sintering. According to the preparation method for the diamond embedded tool with the high holding force, excellent diamond holding force can be obtained the base body of a wrapping layer; the body, with different physical properties, not affecting the holding force of thediamond can be obtained by adjusting by utilizing great adjusting degree of freedom of the base body, and finally, the diamond tool with the high holding force is obtained; during working, the diamonddoes not fall off easily; the diamond protrudes high; and the improvement of the cutting efficiency and the prolonging of the service life of the diamond tool are facilitated.

The invention provides a metal surface heat protecting coating structure and a preparation method and composite material thereof. The metal surface heat protecting coating structure comprises a micro-arc oxidization transition layer and a ceramic coating, wherein the micro-arc oxidization transition layer and the ceramic coating are sequentially arranged on the surface of a metal base body from inside to outside. The ceramic coating comprises multiple subsidiary layers with the thermal expansion coefficient and the heat conductivity descending in a gradient manner from inside to outside. According to the heat protecting coating structure, the outer layer ceramic coating is designed into a multi-layer composite structure with the thermal expansion coefficient and the heat conductivity changing in a gradient manner, thus the thermal expansion difference between the coatings is reduced, the interface stress between a base body and the coatings is relieved, and the stability of the coatingoverall structure is improved. In addition, the micro-arc oxidization transition layer is guided between the metal base body and the ceramic coating, the stress between the metal base body and the ceramic coating can be relieved effectively, and meanwhile, the binding force between the ceramic coating and the metal base body is further increased.

The present invention addresses the problem of providing a composite body of a metal member and a cermet member, which exhibits sufficient joining strength. The solution is a composite body having a cermet member, a metal member and an intermediate member. The cermet member includes a cermet oxide phase and a cermet metal phase. The cermet oxide phase contains a Ni-containing oxide or an Fe-containing oxide. The cermet metal phase contains Ni. The intermediate layer contains Cu. The mass proportions of Cu in the cermet metal phase at points which are spaced apart by 10, 50, 100 and 1000 [mu]mfrom the interface between the cermet member and the intermediate layer to the cermet member side are denoted by C10, C50, C100 and C1000 (mass%). When the mass proportions of Cu in the cermet oxide phase at points which are spaced apart by 10 and 100 [mu]m from the interface to the cermet member side are denoted by M10 and M100 (mass%), C10 > C50 > C100 > C1000, and 5 > M10-M100 > -5.

The present invention is a laminate: with which differences in the thermal expansion coefficient at interfaces between different materials in the interior of a semiconductor element or the like can bekept small; which has high heat resistance; and which has high thermal conductivity. The laminate is provided with at least two layers of thermal expansion-controlling members, the thermal expansion-controlling members including a thermally conductive first inorganic filler joined to one end of a first coupling agent, and a thermally conductive second inorganic filler joined to one end of a second coupling agent; the other end of the first coupling agent and the other end of the second coupling agent are respectively joined to a polymerizable compound, or joined to one another; and the thermal expansion-controlling members have thermal expansion coefficients that are respectively different.

A roll for use in glass manufacture, such as in the production of non-dusting TFT glass, includes a hollow silica cylinder. A rod extends through the interior of the silica cylinder. A cooling volume is contained within the cylinder and extends around the rod. End caps are mechanically fixed to the roll. Pulling flats are fixed in place by inner and outer end plates. A compression fitting secures at least the outer end plate to the roll. The rod may serve to reinforce the roll and may be secured to the shaft by a plurality of supports. The supports accommodate differences in thermal expansion.