47results about How to "Guaranteed tightness requirements" patented technology

A aluminum alloy air-cooled freezing-plate sealing shaping process includes the following steps: 1. processing the appearance of freezing-plate, dissipating heat fins and cover plate parts according to structure design, the structure design of freezing-plate is flush type cavity structure, the two ends of freezing-plate shell is equipped with 2-3 soldering fabrication holes with diameter of 2-3mm; 2. welding the dissipating heat fins and freezing-plate shell, cover plate through the soldering method in nitrogen protection furnace; 3. milling out printed circuit board slots on the freezing-plate shell; welding the cover plate and shell vertical soldering seam through stirring friction welding; 5. mechanical processing the appearance and two end ventilators of freezing-plate according to the drawings requirements, processing the soldering fabrication holes into two end ventilators. The aluminum alloy freezing-plate using the art method of combination of soldering and stirring friction welding in the invention increases the resistant finely processed capacity of brazing seam surface, ensures the hermeticity requirement after finely process aluminum alloy freezing-plate and increases the welding yield rate of electronic structure cabinet.

The invention discloses a seal stroke switch which consists of a tower-form contact system of a seal structure, a pedestal combination, an outer hood, an axle and a guide wheel. One end of a push cylinder and one end of the periphery of a base are respectively manufactured into an interface form suitable for welding; the left end and the right end of a welding sylphon bellows are respectively fused together with the push cylinder and the base by welding, so as to form the seal shell of the stroke switch; L-shaped contact sheets and supporting sheets are overlapped together and are riveted in the annular step hole of the pedestal by rivets; every two mutually symmetrical contact sheets form a contact quadrangle and a tower-form contact system; the middle of the pedestal is provided with a through hole; the pedestal combination and a glass isolator are sintered together by the induction terminal of a basic board; one end of the pedestal combination is welded with a connection terminal and the other end is welded with the induction terminal of the pedestal combination, thus improving the seal performance and the reliability of the stroke switch.

The invention provides a safety linkage locking device for a quick valve of a pressure vessel. The safety linkage locking device comprises a locking hook, inclined iron, inclined face pad iron, a first hinge pin, a second hinge pin, a pull rod, a sliding ring, a third hinge pin, a fixing lifting lug and an air cylinder or oil cylinder. The sliding ring is driven by the air cylinder or the oil cylinder. The locking hook comprises the hook head end, the hook tail end and a bending rod connecting the hook head end and the hook tail end. The inclined iron is fixedly arranged at the hook head end. The inclined face pad iron is installed on a flange of the pressure vessel. The inclined face pad iron is matched with the inclined iron and the locking hook to form a hook mechanism. The hook tail end is connected with the sliding ring through the second hinge pin. The bending rod is connected with one end of the pull rod through the first hinge pin, and the other end of the pull rod is connected with the fixing lifting lug through the third hinge pin. The safety linkage locking device lowers the requirement for the processing and manufacturing precision of parts in the processing, manufacturing, debugging and using processes and is convenient to operate, and the linkage locking performance is stable and reliable.

The invention discloses a method for controlling the growth rate of a solution crystal. The method adopts a three-layer structure consists of a stainless steel screen, a drainage type microporous filter membrane and a stainless steel screen as a sealing member on a top cover of a crystallizer, and makes use of the air permeable and watertight function of the sealing member to control the growth rate of the crystal through a solution evaporation method. As the method uses the three-layer structure which consists of the stainless steel screen, the drainage type microporous filter membrane and the stainless steel screen on the top cover of the crystallizer to seal the crystallizer, vapor of a solvent can pass through the drainage type microporous filter membrane, while liquidized water cannot pass through the filter membrane. Therefore, the problem of the leakage of a growth liquid is solved, and simultaneously the growth rate of the crystal is controlled through the control on the solution temperature, the sectional area of a seed crystal, the aperture size and area size of the microporous filter membrane, and the dosage of an adsorbent. Furthermore, the requirements on the sealing performance of the crystallizer are also met. A single crystal with better crystallization quality is obtained through the setting of the seed crystal area, the growth temperature, the evaporate aperture and area of the microporous filter membrane, and the dosage of the adsorbent.

The invention discloses a magnetorheological material-based high-efficiency rotating speed control device, and belongs to the field of rotating speed control of Fuze turbine generators. The magnetorheological material-based high-efficiency rotating speed control device comprises an upper cover, an inner cylinder, a housing, a bottom, excitation coils, magnetic cores and a magnetorheological material, wherein the upper cover, the inner cylinder, the housing and the bottom form a substrate; a peripheral device comprises a turbine generator; the excitation coils are arranged between the inner cylinder and the housing and are vertical to a rotating shaft of the generator, so that the magnetic particle chaining direction in the magnetorheological material is vertical to the rotating shaft of the generator; magnetic core positioning slots are formed in the inner side of the housing and the outer side of the inner cylinder separately, circular grooves are adopted by the positioning slots andthe connection line of circle centers of each pair of positioning slots horizontally passes through the axis of the rotating shaft; and the diameters of the magnetic cores are matched with those of the corresponding grooves and the magnetic cores pass through the inside of the corresponding excitation coils through the matched positioning slots. According to the magnetorheological material-based high-efficiency rotating speed control device, improvement of the energy conversion efficiency of the magnetorheological material is achieved by combining the magnetic characteristics of the magnetorheological material.

The invention discloses an installing structure of an automobile top cover decoration strip. The installing structure comprises the top cover decoration strip and a groove formed by overlapping a side wall and a top cover. The installing structure further comprises a clamping base adhering to the bottom wall of the groove. The top cover decoration strip comprises a decoration strip body, an elastic buckle body is connected to the middle of the lower portion of the decoration strip body and matched with the clamping base in a clamped mode, and lip sides are arranged on the left and right sides of the decoration strip body respectively and are in interference fit with the two side walls of the groove respectively. The installing structure is reliable in connection, not prone to warping and beneficial to sealing, and installing precision is easy to control.

The invention relates to a split type stator coil winding method and a winding mold device, which belong to the manufacture field of an alternating current servo permasyn motor and can be widely applied to industrial automation and military equipment, such as numerical control machines, processing centers, robots, printing machinery, textile machinery, medical machinery, petroleum, chemical engineering, metallurgy, radar antennae and the like. The invention is characterized in that a winding mold device which consists of a winding mold and a winding mold plate matched with the winding mold; sheathing an outer sleeve barrel (8) of the winding mold on a mold core bracket (2); fixing the mold core bracket (2) of the winding mold and the first group of split type stator core teeth on a winding machine; arranging one end of the split type stator core on the mold plate of the winding mold, and pushing tightly by the other end of the winding machine; and directly winding the windings on the first group of split type stator core. The invention has the advantages of large output power, small volume, good low-speed property, strong overloading capability, stable rotation speed and the like.

The invention relates to a brazing method of a hermetically sealed seat component and belongs to the technical field of manufacture of aircraft engine parts. The hermetically sealed seat component comprises a seat body and a guide pipe, wherein the seat body is made of titanium alloy materials; the guide pipe is made of stainless steel materials. As the welding is hard to perform by adopting a traditional fusion welding method, and the selection of solders, the setting of brazing process parameters, the brazing position sealing requirements, the assembling and the positioning of the seat sealing component in the brazing process and other aspects can be involved when the brazing method is adopted, a set of feasible brazing method is urgently needed to meet the production demands of the hermetically sealed seat component. The brazing method has the benefits that the invention overcomes the technical problems encountered by the hermetically sealed seat component in the brazing process and provides the solder with good weldability; meanwhile, the brazing process parameters are provided, the sealing requirements after brazing at brazing positions are ensured, the positioning precision during brazing is high, and smooth and continuous brazing seams can be obtained; the brazing method has the characteristics of strong maneuverability, high production efficiency and high brazing pass rate.

The invention relates to a method for installing the booster stations for wind power and photovoltaic power generation systems. According to the method, a foundation adjustment method and an initial spacer in-place method are adopted; the highest point of metal embedded parts is found out; an initial spacer installation foundation height is adjusted through gaskets; other spacer foundation heightsare pre-adjusted according to the initial spacer installation foundation height; a bus-bar connection spacer is adopted as an initial spacer to be installed; and after the bus-bar connection spacer is installed, other spacer on two sides of the bus-bar connection spacer are installed. With the method adopted, the accumulated error of the installation of a GIS can be reduced, and the sealing degree of the GIS is ensured; after the spacers are in butt joint with one another, the insertion depths of contacts are calculated; the insertion depths of conductors and contact seats are confirmed, andtherefore, requirements for the sealing degree of the GIS and the safety of a plug are satisfied; the rapid pressing and separation of flanges between the spacers can be facilitated through a multifunctional clamp, and therefore, damage to equipment contacts during the separation of the flanges is avoided; and the multifunctional clamp has a cable shearing function and a cable head crimping function, so that the multifunctional clamp can be used in other electrical construction.

The invention relates to a titanium-steel composite adapter tube, and further relates to equipment for adopting the composite adapter tube. The composite adapter tube comprises a steel adapter tube body, a titanium bushing and a titanium bowl-shaped angle joint ring, wherein the bushing is sleeved in an adapter tube body, the bowl-shaped angle joint ring comprises an angle joint ring tube part, which is laminated with an inner wall of the adapter tube body, and an angle joint ring loop part, which is laminated with an end face of the bottom end of the adapter tube body; the composite adapter tube is adopted by the equipment, the bottom end of the composite adapter tube is welded on a hole wall of an adapter tube hole of an equipment body, the angle joint ring loop part of the bowl-shaped angle joint ring stretches to an inner side of an inner wall of the equipment body around the adapter tube hole and is laminated with the inner wall of the equipment body. The titanium-steel compositeadapter tube can be used for reducing or eliminating a phenomenon that the stress at a welding position between an adapter tube titanium bushing and a titanium backing ring of the equipment body is excessively concentrated, the cracks of welding seams are reduced or avoided, and the titanium-steel composite adapter tube can be widely applied to titanium-steel composite board petrochemical equipment with an external adapter tube and a flange.

The invention relates to a waterproof card holder and a payment device. A card insertion port for inserting an IC card is formed in one side wall of the waterproof card holder, and the rest side wallsof the waterproof card holder are sealed; and in addition to the card insertion port, the other portions of the waterproof card holder are of sealed structures, thereby effectively preventing liquidor water mist from entering the card insertion port and passing through the waterproof card holder to enter equipment provided with the waterproof card holder such as a POS machine.

The invention discloses an extended driving type electroplating liquid resetting mechanism. The mechanism comprises an extended driving mechanism. A driving structure of a liquid drainage start-stop mechanism is extended, the operation convenience and smoothness are improved, an inner threaded sleeve is driven to transversely move through rotation of the outer end of a power screw, so that a movable toothed plate is driven to be slidably clamped on a limiting rod, in this way, a rotating gear is driven to rotate through engaged connection, the purpose of driving a start-stop screw is achieved, therefore, by means of extension of the power screw, driving convenience is improved, a worker does not need to stretch into the lower portion of a bottom cabin for adjustment, in addition, a lap joint block is movably installed on an installation groove in a supporting plate, and disassembly is convenient.

The invention discloses a vacuum pipeline length compensation device which comprises a pipe connector, a concave flange and a compensator flange. Annular grooves surrounding central through holes are formed on end faces of opposite sides of the concave flange and the compensator flange. The end face of the other side of the concave flange is connected with a pipeline. Sealing gaskets are arranged in the annular groove of the concave flange and the annular groove of the compensator flange. A flange is welded at one end of the pipe connector, and the other end of the pipe connector extends into the central through hole of the compensator flange. One end of a sleeve is arranged outside the pipe connector in a sleeved mode and is inserted into the annular groove of the compensator flange. The other end of the sleeve is inserted into the annular groove of the concave flange. The two ends of the sleeve both compress the sealing gaskets in the annular grooves. Bolts respectively penetrate through an installation hole of the concave flange and an installation hole, corresponding to the installation hole of the concave flange, of the compensator flange and are fastened by nuts. The vacuum pipeline length compensation device solves the problem of installation difficulty caused by connecting pipe length changes due to pipeline processing errors at technological pipeline installation time so as to ensure the sealing requirements of connecting positions.

The invention discloses a stainless steel four-way reversing valve main valve with an integrated valve seat for an air conditioner and a machining method, and relates to the field of reversing valves.At present, the problems that cost is high, the machining process is complex, welding positions are not firm, and a valve port face is prone to deformation after long-time use exist. The stainless steel four-way reversing valve main valve comprises a connecting seat fixed to a valve body, a middle section of the valve body is concaved inwards to form a valve seat, and the left side face and the right side face of the valve seat are disconnected with the valve body to form arched edges; the concave valve seat forms a protruding platform in an inner cavity of the valve body, the top face of theplatform is a valve port face matched with a sliding block in the valve body, the connecting seat is embedded in the concave valve seat, the left side face and the right side face of the connecting seat seal a notch formed after the valve seat and the valve body are disconnected, the wall thickness of the valve body is d, and d is larger than or equal to 0.8 mm and smaller than or equal to 1.7 mm. According to the technical scheme, the left side face and the right side face of the valve seat are disconnected with the valve body, stress generated by large deformation during stamping is avoided, and the yield and production efficiency are improved; the process complexity is reduced; the total cost is reduced; and the wall thickness of the valve body can be selected in a larger range to meetdifferent requirements.

The invention relates to the field of bridge structures, in particular to a watertight access door structure of a steel box arch bridge, which can ensure the sealing performance while ensuring the convenience of opening and closing, and the structure comprises an access hole arranged at the bottom of a steel box girder, a manhole stiffening ring fixedly arranged along the access hole and a manhole cover plate in closed fit with the manhole stiffening ring, the manhole cover plate is rotationally connected with a cover plate connecting piece fixedly arranged on the steel box girder, the manhole cover plate is in closed fit with the manhole stiffening ring through a cover plate sealing mechanism arranged on the steel box girder, and a sealing ring structure matched with the edge of the manhole stiffening ring is arranged on the surface of the side, facing the manhole stiffening ring, of the manhole cover plate. The sealing ring structure is tightly attached to the edge of the manhole stiffening ring in a sealed mode. According to the invention, the sealing ring structure matched with the edge of the manhole stiffening ring is arranged on the surface of the side, facing the manhole stiffening ring, of the manhole cover plate, and therefore the sealing performance requirement is met. The watertight access door structure is particularly suitable for a steel box bridge structure of a bridge.

The invention relates to a sealing structure of a coaxial rotating microstrip connector, and provides a coaxial rotating microstrip sealed connector. The coaxial rotating microstrip sealing connectorincludes a connector body, an inner conductor, and an insulator disposed between the connector body and the inner conductor. The insulator is made of a plastic material, and the inner conductor is embedded in the insulator, and the connector body and the insulator, as well as the insulator and the inner conductor are sealed and fixed by an adhesive. Compared with the prior art adopting the sintered glass process, the coaxial rotating microstrip sealing connector of the invention has the advantages of low cost and convenient manufacture while ensuring the sealing performance requirement. Compared with the prior art in which the microstrip adapter needs to be provided, the connector in the invention has an integral structure and a simple structure. The assembly of the connector is not required when assembling the microstrip housing, which is convenient to use.