30results about How to "Avoid high temperature failure" patented technology

The invention relates to a high-power device heat dissipation device and method, belongs to the technical field of aerospace, and particularly relates to the technical field of heat dissipation of high-power devices on aerospace vehicles. The device and the method are matched with the layout of a printed board, a graphite heat diffusion plate is processed, and a boss is arranged in a position, corresponding to a high-power device on the printed board, on the heat diffusion plate; the printed board on which the components are welded is fixed on the frame; the distance between the top surface ofthe high-power device and the mounting surface of the heat diffusion plate is measured, the height of a heat dissipation boss of the graphite heat diffusion plate is machined according to the measured distance, when the heat conduction pad is mounted, heat conduction grease is additionally coated according to the distribution condition of the heat conduction grease on the high-power device, and heat conduction paths are increased for a heat dissipation device with a bonding pad at the belly.

The invention discloses a multi-shoe integral brake, belongs to a brake and particularly relates to a brake with a plurality of brake blocks. The multi-shoe integral brake is characterized in that a frame and a pusher are arranged on a base, a draw bar mechanism comprising rocker arms, a push-pull rod, a connecting rod and a lever is arranged on the frame, one end of the draw bar mechanism is connected with the pusher, and the other end of the draw bar mechanism is connected onto the frame; a brake chain is arranged in the frame, at least five brake shoes are linked with one another to form the brake chain, a circumference is formed by the brake chain in an encircled manner and clings to the surface of a brake drum in a floating manner, one end of the brake chain is connected onto the frame, the other end of the brake chain is connected onto the connecting rod, a shaft of the pusher moves up and down, the draw bar mechanism is pushed to swing around fulcrums on the tops of upright columns of the frame, and the brake chain can be driven to act. The multi-shoe integral brake has the advantages that the multi-shoe integral brake can run stably and reliably, shaking of the mechanism can be eliminated, floating clinging can be prevented after the brake chain is separated from the brake drum, a brake friction area can be enlarged, brake torque can be increased, pressure of an ejecting spring is low, power of the pusher can be reduced, a good brake effect can be realized, energy can be saved, and consumption can be reduced; high-temperature failure of brake linings can be prevented, and accordingly consumption of spare parts can be reduced.

The invention relates to a high-frequency induction plasma water-cooled quartz lamp. The lamp is formed by assembly of an upper support, a powder feeding gun seat, a taper sleeve, a powder feeding gun, a locking threaded sleeve, an inner tube sleeve, an inner tube pressing sleeve, an intermediate support, a manifold, an intermediate tube upper pressing sleeve, a supporting plate, a lower support, supporting columns, an outer tube upper pressing sleeve, an outer tube lower pressing sleeve, a base, a supporting column protection sheath, a water cooled jacket, a transition plate, an intermediate tube lower pressing sleeve, an axis, an intermediate tube, a water inlet, an outer tube, induction coils, an inner tube, a water outlet, a pressure plate, a cooling gas inlet, an ionic gas inlet, an igniter 31 and a plurality of sealing rings. The high-frequency induction plasma water-cooled quartz lamp disclosed by the invention is used for high-frequency plasma multi-functional powder production equipment for manufacturing metal nano-powder, and has the advantages of being convenient to repair and maintain, good in cooling and heat dissipation effects, convenient to ignite, high in energy utilization rate, and the like.

The invention discloses a universal rotary dynamic sealing device and gyration equipment. The dynamic sealing device comprises a dynamic ring and a static ring, wherein the dynamic ring is fixed on a rotating part and makes gyration movement together with the rotating part; the static ring is connected with a static part through a universal rod, and the sealing surface of the static ring is attached to the sealing surface of the dynamic ring; the universal rod is composed of a bulb component and a threaded rod, the bulb end is connected with the static part, the threaded rod is connected with the static ring, springs and clamp nuts are installed on the universal rod, and the springs are tightly pressed on the static ring by the clamp nuts. The dynamic sealing device disclosed by the invention can effectively solve the problem of seal failure caused by radial runout of the rotating part and axial movement caused by thermal expansion, and has the characteristics of good sealing effect and, high-temperature resistance and the like.

The invention discloses a reliable emergency cut-off device of a valve in a high-temperature environment for a low-temperature flammable medium tank. The device comprises a cut-off valve body, wherein a valve body inlet inner cavity connected to the outlet of a low-temperature medium storage tank and a valve body outlet inner cavity connected to a low-temperature medium conveying pipeline are arranged in the valve body; the inlet inner cavity and the outlet inner cavity communicate through a connecting channel; a valve clack which is arranged on the inlet inner cavity side of the valve body is driven by a piston rod to block or open the connecting channel, and a sealing member is arranged on the valve clack; a temperature-controlling channel is further arranged on the valve body, the temperature-controlling channel communicates with the inlet inner cavity of the valve body and is connected to a deflating pipeline, and a deflating valve is arranged on the deflating pipeline. The device disclosed by the invention is simple in structure and effective, and avoids severe consequences caused by failure of an emergency cut-off valve. Furthermore, besides a main valve, the structure of the device disclosed by the invention is further suitable for any one valve connected to the low-temperature storage tank, for example, a fullness measuring valve and an instrument valve.

The invention discloses an artificial leather boiler heat-conducting oil on-line detergent and a preparation method thereof. The detergent is prepared from the following raw materials in percentage by weight: CNOOC 150SN, base oil, dialkenyl succinimide, polyisobutenyl succinimide, high-molecular-weight succinimide, high-molecular-weight phenolic antioxidant, octyl / butyl diphenylamine antioxidant and defoaming agent. The detergent implements non-shutdown on-line cleaning in deed, has the advantages of low addition amount and more obvious cleaning effect, can dissolve the solid oil coke, can improve the heat conductivity and can lower the energy consumption, and the cleaning efficiency is up to higher than 98%. The detergent has the characteristics of mild cleaning property and high operational safety, does not influence the normal operation of the system, and does not have the phenomenon of tube blockage by dirt.

The invention relates to a heat dissipation device and method for high-power devices, belonging to the technical field of aerospace, in particular to the technical field of heat dissipation for high-power devices on aerospace vehicles. The present invention cooperates with the layout of the printed board, processes the graphite heat expansion plate, and makes a boss on the heat expansion plate corresponding to the position of the high-power device on the printed board; fixes the printed board with the welded components on the frame, and measures the high power The distance between the top surface of the device and the installation surface of the heat expansion plate is based on the measured distance, and the height of the heat dissipation boss of the graphite heat expansion plate is matched. Grease, for heat dissipation devices with pads on the abdomen, increase the heat conduction path.

The invention discloses a fully automatic release mechanism for high-temperature molten matter and its control method. The release mechanism of the invention includes a temporary storage container; the upstream of the temporary storage container is connected to a low-pressure container equipped with a melting furnace through an upstream release pipeline, and A protective gate valve and an upstream main sealing valve are sequentially provided on the upstream release pipeline from the low-pressure container to the temporary storage container; a downstream release pipeline is provided downstream of the temporary storage container, and a melt release pipe is provided on the downstream release pipeline. valve and a downstream main sealing valve, the melt release valve is arranged on a side close to the temporary storage container, and the downstream main sealing valve is arranged on a side away from the temporary storage container; the temporary storage container and its The downstream devices are all installed in the bottom high-pressure container; the temporary storage container communicates with the low-pressure container, the bottom high-pressure container and the pressure source respectively through pressure balance pipelines. The invention breaks through the difficulty of transferring high-temperature molten matter from a low-pressure environment to a high-pressure environment.

The invention provides a radial horizontal well sealing device, drilling equipment and drilling method, and relates to the technical field of geological drilling equipment. Drilling mechanism; the sealing element is an active rolling dynamic seal structure, which is arranged between the sealing shell and the injection pipe; both the rotary drilling mechanism and the power feeding mechanism use high-pressure jet fluid as the power source to transmit rotational power and Feed power; drilling equipment includes tubing, steering gear, jet drill bit and sealing device. The sealing device of the present invention changes from a static friction seal to a dynamic friction seal, and from a passive seal to an active seal. It has the advantages of reducing drilling costs, long equipment life, and high drilling efficiency. It is also suitable for high-temperature and high-pressure formations and can avoid the failure of traditional static friction seals. .

The invention relates to a temperature control device and method for forming an anti-insulation material for a large-size curved surface revolving body. When the gas parameters exceed the set range during the heating or drying process, the evenly arranged four-way air inlets are opened to feed the inert gas. Open the vacuum system to pump air until the gas parameters are normal; after the monitored temperature exceeds the set threshold, open the symmetrically arranged two-way pre-plan air inlet, and pass in an inert gas lower than room temperature to realize oxygen isolation and cooling; the invention solves the problem of large-scale , The high temperature abnormal control problem of the integral molding of the anti-heat insulation material with the curved surface rotary body structure, avoiding the resin explosion reaction and high temperature failure of the resin, and the failure of the resin temperature abnormal reaction. The control technology is simple to operate, the parameters are controllable, and it is easy to realize.

The invention discloses a multi-shoe integral brake, belongs to a brake and particularly relates to a brake with a plurality of brake blocks. The multi-shoe integral brake is characterized in that a frame and a pusher are arranged on a base, a draw bar mechanism comprising rocker arms, a push-pull rod, a connecting rod and a lever is arranged on the frame, one end of the draw bar mechanism is connected with the pusher, and the other end of the draw bar mechanism is connected onto the frame; a brake chain is arranged in the frame, at least five brake shoes are linked with one another to form the brake chain, a circumference is formed by the brake chain in an encircled manner and clings to the surface of a brake drum in a floating manner, one end of the brake chain is connected onto the frame, the other end of the brake chain is connected onto the connecting rod, a shaft of the pusher moves up and down, the draw bar mechanism is pushed to swing around fulcrums on the tops of upright columns of the frame, and the brake chain can be driven to act. The multi-shoe integral brake has the advantages that the multi-shoe integral brake can run stably and reliably, shaking of the mechanism can be eliminated, floating clinging can be prevented after the brake chain is separated from the brake drum, a brake friction area can be enlarged, brake torque can be increased, pressure of an ejecting spring is low, power of the pusher can be reduced, a good brake effect can be realized, energy can be saved, and consumption can be reduced; high-temperature failure of brake linings can be prevented, and accordingly consumption of spare parts can be reduced.

The invention discloses a solar cavity-type heat absorber capable of generating overheated steam. The heat absorber comprises a water cooling wall and a superheater; the water cooling wall is a cavity which is provided with an opening and defined by a plurality of membrane-type pipe panels, and the water cooling wall is in vertical parallel arrangement; the superheater is positioned at the inner side of the water cooling wall; the pipe panel of the superheater is in horizontal arrangement; the inner side of the water cooling wall is provided with an 'H'-shaped water cooling connection piece which limits and fixes the superheater; and the 'H'-shaped water cooling connection piece consists of a first vertical pipe section, a horizontal pipe section and a second vertical pipe section. The problems of the transient heat match of the water cooling wall with the overheated parameters and the superheater and heat stress of a superheater pipe are solved through the cavity-type heat absorber, thus the heat absorber can adopt the parameters of the superheater, and the power station efficiency is improved.

The invention provides a catcher for particulate matters in gas and a motor vehicle tail gas particulate matter catcher. The catcher for the particulate matters in the gas comprises a shell, a gas inlet pipe, a plurality of porous partition plates and a gas outlet pipe, the gas inlet pipe is arranged at the lower portion of one side of the shell and serves as an inlet for the gas containing the particulate matters, the plurality of porous partition plates are arranged in the shell and are horizontally arranged in a cavity in a layered mode from bottom to top, a plurality of purification unitsare arranged on each layer of porous partition plate, the gas outlet pipe is arranged at the upper portion of the other side of the shell and serves as an outlet for the filtered gas. In the motor vehicle tail gas particulate matter catcher, air flow is fully contacted with the purification units, so that the filtering efficiency is improved, meanwhile, the cross sectional area is large when the gas pass through the purification units, so that the back pressure is reduced, the purification units adopt a high-temperature-resistant material, so that high-temperature loss in the tail gas environment is avoided.

The invention aims to provide a vertical and horizontal efficient energy-saving vacuum controlled atmosphere furnace for continuous production with high space utilization rate, high heating speed, high product cooling speed, short production period and avoidance of great energy waste caused by repeated heating and cooling during production. The furnace consists of a feeding chamber, a reaction chamber and a discharge chamber, wherein the feeding chamber is positioned below the reaction chamber, and the feeding chamber and the reaction chamber form a vertical structure; and the discharge chamber is positioned on the lateral surface of the reaction chamber, and the discharge chamber and the reaction chamber form a horizontal structure so as to form a vertical and horizontal structure and improve the space utilization rate. The furnace realizes heat insulation and seal of each chamber by adopting a heat insulation sealing door, and has high heating speed and high energy efficiency by adopting an inductive heating mode; the product is cooled by adopting a circulating air cooling system; and the vertical and horizontal efficient energy-saving vacuum controlled atmosphere furnace for continuous production can perform continuous production only by one-time heating so as to improve the production efficiency, reduce the production cost and save a large amount of energy.

The invention provides a high-temperature gas-cooled reactor secondary-circuit flushing system and flushing method, belonging to the technical field of nuclear power. The flushing system comprises: a steam turbine; a condenser; a condensate pump; a finishing device; a deaerator; Shaft seals; vacuuming devices; steam generators; strainers; valves and pipes. When the steam generator is isolated, the condensed water passes through the deaerator and then returns to the condenser through the feed water pump for secondary circuit cold-state circulating flushing. At the same time, the electric boiler is started to perform hot flushing on the steam pipeline, heating the water in the condenser, improving the flushing effect of the condensate water, and heating the feed water through the deaerator to realize the hot circulating flushing of the secondary circuit. It can be put into a finishing device to quickly improve the water quality to meet the water inlet requirements of the steam generator and reduce the entire flushing cycle of the unit.

The invention relates to a lamp respirator and a lamp with the same. The lamp respirator comprises a permeable cylinder (3) communicated with an inner cavity of a lamp casing (6) and a hood body sealed and covered on the permeable cylinder (3); and the hood body is provided with an exhaust hole communicated with the permeable cylinder (3) and the outside. The permeable cylinder (3) is provided with an exhaust channel (3b) communicated with inside gas; the exhaust channel (3b) is provided with an air inlet end (3f) and an exhaust end (3a); and the air inlet end (3f) is connected with the lamp in a sealing way. The hood body comprises an inner hood (2); clearances are respectively reserved between the inner wall at the top of the inner hood (2) and the exhaust end (3a) and between the inner circumferential surface of the inner hood (2) and the outer circumferential surface of the permeable cylinder (3); and the circumferential wall of the inner hood (2) is provided with at least two first exhaust holes. With the lamp respirator, the lamp can exhaust harmful gases inside a lamp cavity in time, balance the air pressure inside the lamp, and is safer and more reliable during use.