60results about How to "Avoid accelerated aging" patented technology

The invention relates to a cross-country friction material composition for air discs, and the cross-country friction material composition for air discs is characterized by being composed of the following raw materials in parts by weight: 20-52 parts of reinforced fibers, 4-16 parts of an adhesive and 23-86 parts of a friction performance modifier. The cross-country friction material composition for air discs is prepared by the steps of weighing the reinforced fiber, the adhesive and the friction performance modifier by weight to prepare a molding compound, paving a base-layer material formed by weighed fiber material and adhesive on a mold, paving weighed friction material on the base layer to carry out thermocompression, and finally carrying out thermosetting. The cross-country friction material composition for air discs is used for the air disc brakes in complicated road conditions, particularly the cold highland area and wading road conditions, so that a friction material which has good heat recession resistance, high wading restoration performance, temperature alternation repeated impact resistance and stable friction performance is provided.

The invention relates to an environment-friendly coating with visible light catalysis function, and a preparation method thereof, belonging to the field of a coating for building decoration. The environment-friendly coating with visible light catalysis function is prepared by the following active ingredients in parts by weight: 1-20 parts of modified nanocrystalline iron oxide powder with visible light catalysis function, 20-70 parts of silicate, 2-5 parts of gypsum powder, 1-10 parts of titanium dioxide, 0.1-5 parts of powder anticaking agent, 1-10 parts of curing conditioning agent, 1-10 parts of inorganic pigment, and 1-20 parts of filler. The prepared environment-friendly coating with visible light catalysis function not only has the characteristic of strong light absorption capability, but also widens the application range of light catalysis technology, and has higher catalytic activity regardless of ultraviolet light and visible light. In addition, the prepared environment-friendly coating with visible light catalysis function is easily available in raw materials, and low in cost.

The invention discloses a high-ultraviolet-reflectivity reflective insulation coating and a preparation method of the high-ultraviolet-reflectivity reflective insulation coating. The high-ultraviolet-reflectivity reflective insulation coating comprises, by weight, 20.0-25.0 parts of water, 1.0-3.0 parts of antifreezing agents, 0.1-0.5 part of sterilizing agent, 0.3-1.0 part of dispersing agent, 0.1-0.5 part of wetting agent, 0.1-0.5 part of antifoaming agent, 0.1-0.5 part of cellulose, 0.1-0.5 part of alkaline pH regulator, 10.0-20.0 parts of titanium dioxide, 15.0-30.0 parts of fillers, 10.0-20.0 parts of ultraviolet reflection pulp, 20.0-30.0 parts of emulsion, 1.0-3.0 parts of coalescing agents, 0.1-1 part of mildew preventive and 0.2-1.0 part of thickening agent. The high-ultraviolet-reflectivity reflective insulation coating is high in ultraviolet reflectivity, good in heat insulation property and weather fastness, high in adhesive force, good in antifreezing function and high in strength, saves energy and is environmentally friendly.

The invention discloses a pipeline repair device which comprises an upper shell body, a lower shell body and sealing gaskets arranged on the upper shell body and the lower shell body correspondingly. Flange and bolt connecting pieces used for joining the upper shell body and the lower shell body into a whole shell in a butt joint mode are arranged on the two sides of the upper shell body and the lower shell body correspondingly. Each sealing gasket comprises radial sealing bodies and axial sealing bodies. The upper shell body and the lower shell body are each provided with radial sealing grooves and axial sealing grooves used for installing the radial sealing bodies and the axial sealing bodies correspondingly. The upper shell body or the lower shell body is provided with protruding protective walls arranged on the outer sides of the axial sealing grooves. When the upper shell body and the lower shell body are in a relatively butt joint state, the protective walls closes gaps between correspondingly flanges from the outsides. By adoption of the pipeline repair device, the situation that accelerated aging of the sealing gaskets are caused by exposure out of the shell can be effectively prevented; and meanwhile, the defect that the portions, located in the axial grooves, of the sealing gaskets are squeezed out of the sealing grooves or burst due to overlarge pressure can be overcome, the anti-pressure ability and the reliability are greatly improved, and the sealability and reliability are higher.

The invention relates to a high-strength cement sound-absorbing plate, which comprises a sound-absorbing layer and a sound-insulating layer, wherein a cavity is formed between the sound-absorbing layer and the sound-insulating layer; sound-absorbing materials are filled into the cavity; the surface of the sound-absorbing layer is provided with a plurality of shutter-type sound-absorbing holes communicated with the cavity. The gradient of a shutter-type sound-absorbing hole window is set in such a manner that dust, rain and snow can be prevented from entering the inside of the sound-absorbing plate, and the sound-absorbing material is prevented from being corroded by rain and snow; the surface of the sound-absorbing plate has a hydrophobic effect, so that the problem of accelerated aging caused by freezing and thawing effects can be solved effectively, damages of moisture and cold to the sound-absorbing plate are prevented, and meanwhile weathering can be prevented; the high-strength cement sound-absorbing plate is molded at a time via a mold, and a unit plate has high structural stability and high structural strength; perlite and the like are taken as sound-absorbing materials, so that the structural strength of the sound-absorbing plate is enhanced while the sound-absorbing effect is ensured.

The invention relates to the technical field of transformer insulating oil, and particularly discloses anti-gassing natural ester insulating oil and a preparation method thereof. In the process of preparing the natural ester insulating oil, benzyl toluene is added into the raw materials, so that the gassing property of the prepared natural ester insulating oil is remarkably enhanced, and the kinematic viscosity of the natural ester insulating oil is reduced. The experimental research results show that after benzyl toluene is added into refined vegetable oil in the process of preparing the natural ester insulating oil, H2, CH4, C2H6, C2H2 and other gases generated in the natural ester insulating oil can be absorbed, and the gassing property of the natural ester insulating oil is enhanced, so that the phenomena of accelerated aging and the like of the natural ester insulating oil caused by the gases are avoided, and transformer faults are avoided.

The invention discloses a switching-on and switching-off structure of an outdoor high-voltage vacuum circuit breaker. The switching-on and switching-off structure comprises: a box body; a supporting plate which is fixedly connected between the two sides of the inner wall of the box body, wherein the top of the supporting plate is fixedly connected with a switching-on and switching-off body, and the top of the switching-on and switching-off body is provided with a plurality of solid-sealed polar poles. According to the switching-on and switching-off structure of the outdoor high-voltage vacuumcircuit breaker, a power supply of the electromagnet is switched on, the electromagnet generates repulsive acting force on the permanent magnet, further, the cover plate indirectly moves towards one side far away from the fixed frame, a ventilation opening is in the open state, and the two fans are started to drive air flow in the box body to flow, so that high-temperature air or moisture in the box body is brought out of the box body, the effect of cooling or dehumidifying the interior of the box body is achieved, and the situation that normal work of the switching-on and switching-off body is affected due to the fact that the temperature in the box body is too high or the moisture is heavy is avoided.

The invention discloses a window guardrail with high safety performance and capable of preventing children from falling, and relates to the technical field of door and window hardware. The window guardrail comprises a base, wherein the top of the base is fixedly connected with a frame, sliding grooves are formed in the inner sides of the base and the frame, the sliding grooves penetrate through the frame, handrails are connected between the inner walls of the sliding grooves in a sliding manner, the two ends of the outer sides of the handrails are sleeved with gears, and gear plate grooves areformed in the two sides of the inner walls of the sliding grooves. The window guardrail with high safety performance and capable of preventing children from falling can realize the purpose of preventing children from falling without increasing the sealing performance of windows, the protection function is triggered in time after children touch the window guardrail, the intellectualization degreeis high, the window guardrail can provide foot support when children get stuck on the window guardrail, reduces physical output of children and fights for more time for rescue, at the same time, the window guardrail can provide buffering when a child falls and prevents the child from being injured in collision with a building, and the safety performance is improved.

The invention provides a light source adjusting system and a light source adjusting method. The light source adjusting system is used for detecting video source information through the brightness determining module, to obtain brightness level information of each frame of image of the video source information and video gain information corresponding to the brightness level information, enabling thelight source to determine the light source brightness when each frame of image of the video source information is displayed according to the light source brightness information corresponding to the light source level information. Therefore, the purpose of adjusting the brightness of the light source without intercepting light rays of the light source through the light engine is achieved, the problems of accelerated aging and shortened service life of the light engine caused by temperature rise of the light engine due to light intercepted in the light engine are avoided, and the light energy utilization rate of the light source is also improved.

A current equalizing circuit board includes a control chip and a plurality of current equalizing units. The control chip is connected with the battery management unit and each current sharing unit. Each current sharing unit includes an electronic switch and an energy storage element. The first end of each electronic switch is connected with the control chip, the second end of each electronic switch is connected with the corresponding electric core, and the third end of each electronic switch is connected with the corresponding energy storage element. The control chip controls the turn-on and cut-off frequencies of each electronic switch according to the instructions sent by the battery management unit, so that the charging current and the discharging current of each battery cell are consistent. The above-mentioned current equalizing circuit board can make the charging current and discharging current of each cell in the battery pack consistent. The present invention also provides a battery management system using the above-mentioned current equalizing circuit board.

The invention discloses a washing device for a marine pipeline. The washing device comprises a liquid storage tank body, wherein first driving devices are fixedly connected to the two sides of the bottom of the liquid storage tank body, a water spraying pipe is connected to the upper portion of the left side of the liquid storage tank body in a communicating mode, a replenishing pipe is connectedto the right side of the liquid storage tank body in a communicating mode, a fixing plate is fixedly connected to the outer surface of the replenishing pipe, and a rotating ring is rotationally connected to the right side of the fixing plate. The invention relates the technical field of washing devices. According to the washing device for the marine pipeline, a rotating shaft drives a gear to rotate, and the meshing relationship between the gear and an annular rack is utilized, so that an annular plate rotates, and is matched with an arc-shaped block and bristles to brush and dry residual moisture at the inner wall of the marine pipeline, free-state water accumulated at a low-lying part in the marine pipeline can be scattered, the drying time is shortened, the bristles are dried through aheating rod and a heat conducting block, the drying operation is repeated, the existence of a water film at the inner wall of the pipeline is avoided, the service life of the pipeline can be prolonged, and the quality of a conveyed oil product is guaranteed.

The invention discloses a GIS (Gas Insulated Switchgear) characteristic gas adsorption film. The GIS characteristic gas adsorption film comprises a bonding layer, wherein the bonding layer is of a dual-side bonding structure; one surface of the bonding layer is covered with an adsorption layer; the adsorption layer is a carboxyl graphene layer; the carboxyl graphene layer is a single-layer graphene surface which is rich in carboxyl functional groups. After the adsorption film is pasted on the inner surface of GIS equipment, GIS characteristic gas inside the equipment comes into contact with acarboxyl graphene surface, and a strong chemical adsorption effect can be formed between the carboxyl functional groups on the graphene surface and GIS characteristic gas molecules to realize the adsorption of the gas molecules. The GIS characteristic gas adsorption film has the advantages of remarkable adsorption effect on GIS characteristic gas, low preparation cost, stable adsorption, small size, reusability and the like.

The invention relates to a chemical leakage detection device. The chemical leakage detection device comprises a barrel body, a pipeline and an adding pump, wherein the barrel body is used for containing chemicals, the pipeline is connected to the barrel body and is used for conveying chemicals, and the adding pump is arranged on a conveying path of the pipeline. A first leaked liquid collecting container which is used for collecting the chemicals which leak from the pipeline is connected to the pipeline, the pipeline comprises an inside pipe and an outside pipe which are isolated from each other, the outer side of the inside pipe is sleeved with the outside pipe, the chemicals are conveyed through the inside pipe, and the first leaked liquid collecting container communicates with the outside pipe. According to the chemical leakage detection device, double-pipeline configuration is adopted, so that the inside pipe can be prevented from being directly irradiated by sunlight and the likeso as not to cause accelerated aging of the inside pipe; the chemicals are conveyed through the inside pipe, and the outside pipe communicates with the leaked liquid collecting container and can be used for holding the chemicals back, so that chemical agents can be prevented from making direct contact with people when the chemicals in the inside pipe leak, and personnel injury or mechanical failure caused by leaked chemicals is prevented.

The invention discloses an electrical automation control box with a double-heat-removal effect, and relates to the technical field of electrical boxes and particularly relates to an electrical automation control box with a double-heat-removal effect. The box comprises a box body and a box door, and is characterized in that air guide mechanisms are mounted on the left side and the right side of thebottom in the box body; a filtering mechanism is installed on the side, away from the vertical center line of the box body, of the air guide mechanism, a shielding mechanism is installed on the side,away from the air guide mechanism, of the filtering mechanism, a transverse plate is installed in the middle of the interior of the box body, an air hole is formed in the transverse plate, and a locking mechanism is arranged at the rear end of the interior of the box body; and rear air guide mechanisms are mounted on the left side and the right side of the locking mechanism. The electrical box with the double-heat-removal effect for electrical automation is provided with the rear gas guide mechanism, the through holes can effectively provide a flowing channel for gas and discharge heat carried by the gas, so heat dissipation treatment can be effectively provided for the gas, and the dust collection cotton can effectively adsorb dust carried by the gas.

The invention discloses a vibration reduction belt wheel. The vibration reduction belt wheel comprises an inner belt wheel with a shaft hole, an outer belt wheel provided with a belt groove in the outer circumferential face annularly and a rubber layer arranged between the inner belt wheel and the outer belt wheel, a first arc-shaped groove is formed in the outer circumferential face of the inner belt wheel annularly, a second arc-shaped groove is formed in the inner circumferential face of the outer belt wheel, the first arc-shaped groove and the second arc-shaped groove are oppositely arranged to form a rolling way, and multiple balls are assembled in the rolling way. Compared with the prior art, the rolling way with the arc-shaped cross section is designed between the outer belt wheel and the inner belt wheel, the multiple balls are assembled in the rolling way, the runner layer equivalently serves as a holding support of the balls, and therefore the outer belt wheel and the inner belt wheel have rigid axial and radial limiting, radial loads and axial loads are borne at the same time, radial and axial displacement of the inner belt wheel and the outer belt wheel is effectively limited, accelerated aging caused by transmission errors and extra stress of rubber is avoided, and the running stability and reliability are improved.

The invention provides a power transmission network uniformity planning optimization method and system, a medium and electronic equipment, and belongs to the technical field of power transmission network planning. The method comprises the steps of obtaining the load information of multiple planning stages in a power transmission network planning period and generator set operation scene informationassociated with a preset power transmission network; inputting the acquired data information into a preset target function model constructed by combining the uniformity index of the power transmission network, and solving a target function by adopting a mixed integer linear programming algorithm to obtain a power transmission network uniformity programming optimization scheme. According to the invention, the access capability of the clean energy is improved spatially, the time-varying absorption capability of the clean energy is improved temporally. Meanwhile, the problem of equipment fatiguecaused by long-term heavy-load operation or frequent operation of part of power transmission and transformation equipment can be avoided.

The invention relates to a loudspeaker base, and particularly relates to a loudspeaker base with a heat dissipation function. The loudspeaker base comprises a housing, a first filter screen is arranged on a back wall of the housing, inclined plates are arranged in the housing, the inclined plates are connected through a second filter screen, sawtooth stop dogs are arranged on the inclined plates, the back wall of the housing is connected with one end of a connecting rod, the connecting rod penetrates through the second filter screen, a base is fixed to the other end of the connecting rod, a heat dissipation through hole is formed in the base, mounting rods are fixed to the top and the bottom in the housing, and a suction ventilator is arranged on the mounting rods; and the technical scheme provided by the invention can effectively overcome the shortcomings that the energy generated by the loudspeaker at work cannot be dispersed into the surrounding air in time, and that sound with uniform volume cannot be sent to all directions in the prior art.

The invention discloses a radiation heating immersion unit cleaning and drying device and a drying method thereof. A radiation heater outside the upper part of a box body is used for heating and drying an immersion unit in a stable and dry gas environment in an upper cavity of a closed drying box body. A first air outlet, a second air outlet and a box bottom air outlet are matched with dry gas separation treatment of the upper cavity and a lower cavity, drying and heating treatment can be more stable and cleaner, and temperature and humidity data of the upper cavity and the lower cavity are collected through a temperature sensor and a humidity sensor correspondingly. Starting work and stopping work of the radiation heater can be controlled more reliably and effectively, deformation and functional failure of part of assembly parts caused by overheating of the immersion unit can be effectively avoided, accelerated aging or pollution brought by the immersion unit is avoided, and the reliability and stability of drying and cleaning of the immersion unit are improved.

The invention relates to the technical field of instruments, and discloses an auxiliary dust removal device for instruments. The device comprises a shell, a rotating shaft I is movably connected in the shell, a rotating rod I is fixedly connected outside the rotating shaft I, a connecting rod I is movably connected to one end, far away from the rotating shaft I, of the rotating rod I, one end, far away from the rotating rod I, of the connecting rod I is movably connected with a connecting rod II, a short rod is movably connected to the outside of the connecting rod II, a sliding rod is movably connected to the end, away from the connecting rod II, of the short rod, a fixing plate is fixedly connected to the outside of the sliding rod, a rotating shaft II is movably connected to the inside of the fixing plate, and a rotating rod II is fixedly connected to the outside of the rotating shaft II. Through interaction of the fixing plate, the rotating shaft II, the rotating rod II, a swing rod, a sliding block, a detection assembly I and a detection assembly II, dust deposited on the surface of an anode can be cleaned, so that the anode is kept clean, and the situation that dust deposition affects an electrostatic field, and affects the dust removal of an instrument is is avoided.