17results about How to "Reduce airtightness" patented technology

The utility model relates to the technical field of heat insulation wall, especially a heat insulation wall coated with radiation refrigeration coating, which comprises a wall base layer, a fixed frame arranged on the outer side of the wall base layer, an adhesive layer arranged on the inner side of the fixed frame, a phase change layer arranged on the outer side of the adhesive layer, a heat insulation layer arranged on the outer side of the phase change layer, a radiation refrigeration coating layer arranged on the outer side of the heat insulation layer, and a protective layer arranged on the outer side of the radiation refrigeration coating layer. The fixed frame is fixed on the wall base layer through the adhesive layer, the fixed frame is used to conveniently disassemble, replace and maintain the heat insulation wall surface, the radiation refrigeration coating layer effectively reflects solar radiation, reduces the temperature of the wall, the protective layer is used to protect the radiation refrigeration coating layer, the heat insulation layer increases the thickness of the wall, the phase change layer buffers the temperature change of the wall, and the stress generated by thermal expansion and cold contraction of the wall can be reduced, thereby enhancing the heat insulation effect of the wall. Moreover, the heat insulation wall can be locally disassembled and assembled, and the damaged and aged wall surface can be repaired and replaced at any time.

This invention discloses a five-layer electrodeposited high-sealing corrugated pipe based on ultrasound assistance and its preparation method, belonging to the technical field of metal corrugated pipe manufacturing. It aims to solve the problem that in multi-layer electrodeposited corrugated pipes, it is difficult to effectively coordinate current density, surface quality, and interfacial bonding strength, leading to insufficient densification of the deposited layer, unstable interlayer bonding, poor wall thickness uniformity, and failure to meet airtightness standards, ultimately resulting in poor overall performance stability. This invention includes a five-layer composite structure in which the pipe wall is composed of alternating nickel-cobalt alloy and copper layers. Each layer of the five-layer composite structure undergoes ultrasonic vibration treatment during deposition. The corrugated pipe prepared by this invention has a uniform and dense deposited layer with good interlayer bonding. The five-layer alternating deposition layer composite structure not only achieves uniform stress transmission and dispersion, effectively delaying crack propagation and interfacial penetration, but also improves the uniformity of wall thickness distribution, enabling the corrugated pipe to exhibit higher structural stability and long-term reliability in a sealed environment.

The invention discloses a sealing cover structure and a single battery. The sealing cover structure comprises a cover plate, a sealing assembly and a pole assembly, specifically, the cover plate is provided with an appearance surface and a working surface which are oppositely arranged in the thickness direction, a pole hole penetrating through the working surface and the appearance surface is formed in the cover plate, and the working surface is used for facing the battery cell assembly; the sealing assembly is arranged on the working surface; the pole assembly and the cover plate clamp the sealing assembly and penetrate through the pole hole. According to the sealing cover structure disclosed by the invention, along with the rise of the internal pressure of the configured single battery, the sealing performance of the sealing cover structure becomes more excellent due to the fact that the pole assembly and the cover plate press the sealing assembly.

The present invention relates to a secondary battery that suppresses a decrease in the air tightness at the periphery of a filling port provided in a lid of the secondary battery. The secondary battery disclosed herein has an electrode body, a case main body, and a lid of the case main body. The lid (14) has a filling port (15), a flat annular resin gasket (60) mounted to the filling port (15), and a stopper member (50). The stopper member (50) has a sleeve (51) inserted into the filling port (15) and a flange (52) extending from the sleeve (51) toward the outer diameter direction along the outer surface (14a) of the lid (14). The resin gasket (60) is mounted to the filling port (15) and is sandwiched between the flange (52) and the outer surface of the lid. Here, a protrusion (52x) that protrudes toward the outer surface of the lid is provided at the radial middle portion of the flange (52). A restriction portion that restricts the outer edge of the resin gasket (60) is provided in the lid or the stopper member.

According to the present invention, a battery pack having improved internal pressure resistance is disclosed. A battery pack according to one aspect of the present invention comprises at least one battery module and a battery pack case accommodating the battery module in a space therein, in which the battery pack case comprises: a case body having an internal space therein, the housing main body is provided with an opening portion on at least one of one side and the other side facing the one side; and a case coupled to the case main body and sealing the opening portion to prevent the opening portion from being exposed outside the pack case.

The utility model provides a battery aluminum shell and a battery, the battery aluminum shell comprises an aluminum shell main body having an inner cavity and a mounting port, the inner cavity is used for accommodating battery internal components, the mounting port is located in the outer wall surface of the aluminum shell main body, and the mounting port is communicated with the inner cavity; and the explosion-proof valve covers the mounting opening, the explosion-proof valve and the aluminum shell main body are formed in an integrated stretching and stamping mode, and the explosion-proof valve is used for blasting when the pressure of the inner cavity reaches a preset threshold value. As the explosion-proof valve and the aluminum shell main body are formed in an integrated stretching and stamping manner, the explosion-proof valve and the aluminum shell main body are integrally formed, and a welding process is avoided, so that the production process is simplified, and the production steps and cost are reduced; secondly, the explosion-proof valve and the aluminum shell main body are integrally formed, so that the welding process is avoided, the negative influence of the welding temperature on the performance of the explosion-proof valve is eliminated, and the stability and the reliability of the explosion value of the explosion-proof valve are ensured; in addition, the explosion-proof valve and the aluminum shell main body are integrally formed, so that the air tightness problem possibly caused by welding is reduced.

The invention relates to the technical field of medical instruments, in particular to a medical incision self-release protection device which can effectively protect a clinical surgical incision and improve the safety and flexibility of surgical operation, and is characterized in that an introducer consists of a left introducer shell and a right introducer shell which are buckled with each other; after the left-side imbedding shell and the right-side imbedding shell are connected in a buckled mode, a containing cavity used for containing the incision protection sleeve is formed, the lower end of the imbedding device is in a cone shape beneficial to penetrating into an incision and pushing open tissue at the incision, and a limiting plate used for limiting a flexible inner clamping ring at the lower end of the sleeve body is arranged on the inner wall of the imbedding device. After the sleeve body is arranged in the containing cavity, the inner clamping ring is located on the side, close to the lower end of the imbedding device, of the limiting plate.

This utility model discloses a high-temperature bottle clamp, comprising a base, multiple holding units, a cylinder, and a metal piston. Each holding unit includes two parallel first connecting rods, one end of which is rotatably connected to the base, and gripping fingers rotatably connected to the other ends of the two first connecting rods. A support arm is provided on one of the first connecting rods. A second connecting rod is provided between the support arm and the piston. Heat-insulating guide sleeves are provided at each rotatable connection position of the first connecting rod and each rotatable connection position of the second connecting rod. The self-made cylinder with a metal piston improves heat resistance, is cheaper to manufacture, and has a longer service life. The first and second connecting rods with heat-insulating guide sleeves extend the heat transfer distance between the bottle clamping end and the cylinder. Simultaneously, the heat-insulating guide sleeves reduce heat transfer efficiency, further reducing the impact of high temperatures on the cylinder's airtightness and movement accuracy.

The local stress dispersion structure of the battery box body comprises the battery box body and the hanging lug arranged on the battery box body, the stress dispersion assembly is arranged between the battery box body and the hanging lug, and the stress dispersion assembly can effectively solve the problem of stress concentration generated by welding of the hanging lug and the battery box body. The welding fusion penetration risk is reduced, the vibration resistance of the box body is improved, and the influence of welding spot failure of the battery box body on the air tightness and safety of the battery pack in later use is reduced; the local stress dispersion structure of the battery box body provided by the utility model can effectively solve the problem of stress concentration generated by the welding of the hanging lugs and the battery box body, is beneficial to reducing the welding penetration risk, and improves the vibration resistance of the box body; and the influence of the welding spot failure of the battery box body on the air tightness and safety of the battery pack in later use is reduced.

The invention relates to a pressure medium-operated brake cylinder for a rail vehicle, the brake cylinder comprising a housing (2); a translationally movable brake piston rod (4) extending through a hole (23) in a housing bottom (21); a guide ring received in the hole (23) and surrounding the brake piston rod (4) for guiding the brake piston rod (4) in the hole (23); and at least one sealing ring received in the hole (23) and surrounding the brake piston rod (4) for sealing an interior space (25) of the housing (2) relative to a space outside the housing (2), wherein the guide ring and the at least one sealing ring are constructed as a guide and sealing ring (3) integrated into a structural unit.

This invention discloses a leaf sweeping machine, relating to the technical field of leaf cleaning. It includes a vehicle body, a rotating sweeping mechanism, a sweeping head angle adjustment mechanism, and a central rotary joint air supply mechanism. A leaf collection box is located on the rear side of the vehicle body's top, with a negative pressure fan connected to its interior at the top. Negative pressure ducts connected to the leaf collection box are located on the left and right sides of the vehicle body's front end. This invention uses a rotating sweeping head mechanism and a negative pressure fan to sweep the ground, and utilizes a hot air blower to accelerate the evaporation of moisture from the leaves, breaking down the surface tension and atmospheric pressure between the leaves and the road surface caused by moisture. This reduces the airtightness between the leaves and the road surface, thereby reducing the force exerted by atmospheric pressure on the leaves adhering to the road surface, facilitating sweeping by the sweeping head. The central rotary joint, integrated inside the rotating component, solves the problem of rotating air supply, making efficient use of the sweeping head space and resulting in a simple and reliable structure.

The utility model discloses a detection device for a robot controller, which relates to the technical field of robot controller detection appliances and comprises a first air pump, a display screen is mounted on the front end face of the first air pump, a switch is mounted on one side of the first air pump, a mounting groove is vertically formed in the other side of the first air pump, and a detection assembly is arranged on one side of the first air pump. According to the utility model, through cooperation of the first air pump and the detection box, airtightness of the control box can be conveniently detected through pressurization; through cooperation of an air bag and a second air pump, the air bag can be conveniently attached to the outer sides of the control boxes of different sizes, and the situation that the air tightness effect of the detection control box is reduced due to insufficient internal air pressure caused by air leakage is avoided; through cooperation of an air pressure sensor and a first air pump, whether the air tightness of the control box reaches the standard or not is conveniently detected; the air tightness of the control box is detected through air pressurization, so that whether the control box has a waterproof function or not is judged, and the waterproof function of the control box is prevented from being detected by soaking the control box in water.

The invention provides a pressing strip type combined sealing lining structure, a compressed air energy storage power station underground cave depot and a construction method of the compressed air energy storage power station underground cave depot, and belongs to the technical field of compressed air energy storage devices. The pressing strip type combined sealing lining structure comprises frameworks, a fixing bottom plate and a plurality of sealing layers, a hollowed-out face is formed between the frameworks, a pressing strip is arranged in the center of each framework, after the frameworks and the fixing bottom plate are assembled, the pressing strips are centered with the bottom of the fixing bottom plate, sealing layer clamping grooves are formed between the pressing strips and the fixing bottom plate, the sealing layers are spread in the hollowed-out faces, and in addition, the sealing layers are arranged on the hollowed-out faces. The free edges of the sealing layers are filled in the sealing layer clamping grooves, so that the multiple sealing layers are connected into a whole to form the pressing strip type combined sealing lining structure. The underground garage comprises a concrete lining layer and the sealing lining structure provided by the invention, and the sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer. The underground garage can be obtained through the construction method of the underground garage. The sealing structure is easy and convenient to construct, high in working efficiency, excellent in sealing performance and low in manufacturing cost.

The present invention discloses a thermal expansion valve, which belongs to the field of expansion valves. A thermal expansion valve comprises a valve body; the valve body is provided with a valve body inlet, a valve body outlet, an air cavity, an inlet cavity connected to the valve body inlet, and a valve cavity connected to the valve body outlet; a diaphragm is provided in the air cavity; a butt ring is provided between the inlet cavity and the valve cavity; a valve ball capable of sealing the butt ring is slidably connected in the valve cavity; the valve ball and the diaphragm are connected through a valve stem; a sliding seat is provided in the valve cavity below the valve ball; a compression spring is provided between the sliding seat and the valve ball; the thermal expansion valve also includes a driver that controls the position of the sliding seat in the valve cavity by magnetic force. This solution controls the movement of the adjusting rod by magnetic force, thereby controlling the movement of the sliding seat and changing the initial elastic force of the compression spring.

The utility model discloses an oil gas recovery valve, which relates to the technical field of oil gas recovery valve sealing structures and comprises a valve body, a filter screen is arranged at a valve pipe orifice of the valve body, a first gas inlet and a second gas inlet are convexly arranged at the side end of the valve body at equal intervals, and fixed limit rings are convexly arranged on the outer sides of the first gas inlet and the second gas inlet. According to the gas guide valve, the flow speed of oil gas in the valve body can be slowed down through the arrangement of the filter screen, and through the arrangement of the first gas inlet and the second gas inlet, the gas guide valve can be better connected with the connecting hose used for guiding gas; the annular limiting groove is formed in the side face of the valve pipe opening of the valve body, the sealing rubber ring used for being connected with the limiting groove in a pressing and abutting mode is arranged on the outer side of the filter screen, the sealing rubber ring can be fixedly connected with the annular limiting groove in an abutting mode through the arrangement of the sealing rubber ring on the outer side of the filter screen, and therefore the sealing performance of the connecting position of the valve body is enhanced.

The utility model provides a panel storage container which can restrain reduction of leakproofness of a container body during carrying. The panel storage container comprises: a container body for storing a panel; the carrying handle is arranged on the side wall of the container body; and a fastening member for fixing the handle to the side wall, the fastening member extending in the left-right direction across the handle and the side wall.

The present application provides a battery cell, a battery, an electrical device, and a device and method for manufacturing a battery cell, and relates to the technical field of batteries. The battery cell includes a shell, an electrode assembly, and a current collecting member, where the electrode assembly is accommodated in the shell, and the electrode assembly is provided with a tab; the current collecting member includes a first connecting part and a second connecting part which are connected, the first connecting part is used to be welded to the tab, and the second connecting part is used to be welded to the shell; and the first connecting part and the second connecting part are made of different materials, the first connecting part and the tab are made of the same material, and the second connecting part and the shell are made of the same material. Since the second connecting part and the shell are made of the same material, the second connecting part and the shell have the same coefficient of thermal expansion. In the cooling process after welding, the welding position shrinks evenly, and cracks will not occur at the welding position due to uneven shrinkage, thereby reducing the risk that the airtightness of the battery cell is reduced due to welding, and improving the safety of the battery cell.