7results about How to "Protective tightness" patented technology

This application discloses a GIS high-voltage switch housing with a safety protection structure for use in the field of high-voltage switches. This switch housing, through the inclusion of a sealing protection mechanism, allows the mechanism to monitor the sealing performance of the main housing. If a problem occurs in the sealing performance of the main housing, leading to SF6 failure... 6 When a gas leak occurs, the trigger board will activate the leak detection switch, causing the alert control module to activate the alarm and alert the staff. This allows staff to detect the gas leak in a timely manner and prompts them to conduct appropriate inspections and maintenance. This provides a protective effect, reducing the impact of problems with the casing's sealing. Furthermore, through the installation of gas sensors and gas analysis modules, when the leak detection switch is triggered, the sealing protection mechanism will also perform a self-check on its internal sealing to prevent false alarms. This avoids misleading staff and greatly improves practicality.

The invention is applicable to the field of radiators, and provides an embedded radiator, which comprises a radiating bottom plate, an embedded groove recessed inwards from the top surface of the radiating bottom plate, and a heat absorption surface arranged on the bottom surface of the embedded groove; the heat pipe is in a flat shape, the heat pipe is contained in the inlaying groove, the heat pipe comprises an evaporation section and a condensation section which are oppositely arranged, and the evaporation section is connected to the heat absorption surface; and the radiating fins are connected to the condensation sections of the heat pipes in a surface-mounted welding manner. According to the embedded radiator, the heat pipe is arranged to be flat and embedded in the embedding groove of the radiating bottom plate, and the radiating fins are welded to the heat pipe in a surface-mounted mode, so that the embedded radiator is of an integrated structure, and solder thermal resistance and air gaps can be effectively eliminated. The evaporation section of the heat pipe is directly connected to the heat absorption face of the heat dissipation bottom plate, the heat transfer path from the chip to the heat pipe can be shortened, the transverse heat resistance of the heat dissipation bottom plate is reduced, rapid activation of the heat pipe is achieved, and center heat accumulation is reduced. The heat dissipation fins and the condensation section are welded in a surface-mounted mode, contact thermal resistance between the heat dissipation fins and the condensation section can be reduced, and heat dissipation efficiency can be improved.

The application discloses a cutter tower with separable cutter disc and cutting water pipe, comprising a box body, a cutting water pipe, an elastic element, a limiting structure, a cutter disc and a driving mechanism. The limiting structure is arranged in the main cutting water passage and is used for limiting the moving range of the cutting water pipe during tool changing, so that the cutting water pipe is prevented from moving excessively with the cutter disc. A separation gap S is formed between the cutting water pipe and the cutter disc, and the cutting water pipe and the cutter disc are no longer in direct mechanical contact. During the whole rotating tool changing process, since there is no contact friction, the fine chips carried in the cutting fluid cannot be squeezed onto the contact surface of the cutting water pipe and the cutter disc due to the friction, so that the sealing surface of the front end of the cutting water pipe is effectively prevented from being scratched by the chips, the sealing performance of the cutting water pipe is protected, and cutting fluid leakage in the subsequent working state is prevented. Meanwhile, the abrasion of the cutting water pipe is reduced, and the problems of accelerated abrasion of the cutting water pipe, shortened service life and high replacement frequency caused by hard friction in the prior art are avoided.

This invention relates to a rapid disassembly and assembly method for fuel cell stacks, belonging to the field of fuel cell technology. The method uses a disassembly and assembly module composed of pull plates and lifting devices to disassemble and replace faulty battery unit modules in a fuel cell stack. Specifically, it includes the following steps: installing pull plates on adjacent modules of the faulty battery unit module; placing lifting devices on both sides of the faulty battery unit module, with the mounting surface and working surface of the lifting devices abutting against the pull plates on both sides; activating the lifting devices to drive the adjacent modules of the faulty battery unit module away from each other, leaving space between the adjacent modules for battery unit module replacement; replacing the faulty battery unit module, removing the lifting devices, and restoring the fuel cell stack. Compared with existing technologies, this invention can achieve rapid disassembly and replacement of faulty battery unit modules inside a fuel cell stack without compromising the overall pre-tightening force and airtightness of the stack.

The utility model discloses a rubber sheet air-drying device, which belongs to the technical field of rubber sheet processing and comprises a frame, a suspension mechanism arranged on the frame and an air-drying mechanism. A net cage is hung on the hanging mechanism, and the net cage of the hanging mechanism is used for containing rubber sheets; the air drying mechanisms are arranged above and below the net cage; the air drying mechanism comprises a cold air box, an air supply assembly arranged in the cold air box and a plurality of air outlet branch pipes communicating with the cold air box, the air outlet branch pipes are arranged along the net box at intervals, each air outlet branch pipe is evenly provided with a plurality of air outlet holes in the length direction of the air outlet branch pipe, and the air outlet holes face the rubber sheets. According to the rubber sheet air-drying device adopting the structure, the evaporation rate of water on the surface of a rubber sheet is consistent, the temperature distribution is uniform after air drying, and the problem that the surface is uneven due to different thermal shrinkage amplitudes is obviously reduced.

This invention discloses a self-drilling screen pipe top cement injector, relating to the field of oil drilling engineering technology. The self-drilling screen pipe top cement injector includes a body, an inner cylinder, an expansion seal, and a sealing element. The inner cylinder is connected to the inner wall of the body via a first shear pin. A first end of the inner cylinder defines a pressure-retaining cavity with the body, and a pressure-retaining hole is also provided at the first end, which can be opened or closed. The second end of the inner cylinder can be connected to or disconnected from the external environment through the body. The expansion seal is sleeved on the body and defines an expansion sealing cavity with the outer peripheral wall of the body. The expansion sealing cavity is connected to the inner cavity of the inner cylinder via a one-way valve. The sealing element can be disposed within the body and seal the second end of the inner cylinder. This self-drilling screen pipe top cement injector can achieve a self-drilling effect, reducing operating costs, improving operating efficiency, and increasing the success rate of operations.