14results about How to "Good sealing environment" patented technology

The invention relates to a dustproof power cabinet, which belongs to the technical field of power cabinets and comprises a cabinet body, a front opening is formed in the side wall of the cabinet body, a protective door is rotatably mounted in the front opening, an observation window is arranged at the upper part of the protective door, a rear opening is formed in the side wall, opposite to the front opening, of the cabinet body, and a clamping plate is fixed on the side wall, below the rear opening, of the cabinet body. A clamping plate is arranged on the side wall of the cabinet body, one end of the clamping plate extends obliquely upwards, a filter plate is clamped between the clamping plate and the side wall of the cabinet body, a through hole is formed in the filter plate, a dustproof layer is arranged in the through hole, a movable plate is arranged above the filter plate, and a heat dissipation assembly is arranged above the movable plate. The sealing effect is poor after the protection door is closed, at the moment, the sealing frame body can be extruded between the cabinet body and the protection door through the triggering mechanism, the sealing effect is further achieved, meanwhile, the electric power cabinet can prevent heat from being accumulated in the cabinet body, and dustproof heat dissipation can be provided for the interior of the cabinet body while the sealing protection effect is good.

The invention relates to the technical field of injection mold detection, in particular to a pressurized injection mold sealing performance detection device. The device comprises a detection assembly, the detection assembly comprises a supporting mechanism, a sealing piece is arranged on the outer wall of the attaching position of a fixed mold body and a movable mold body, a pressurization injection mechanism is installed at an injection molding opening of the fixed mold body in a sealed mode, and the other side of the pressurization injection mechanism is installed on the inner wall of the supporting mechanism. The pressure sensor body receives sensing and sends out a signal, so that the gas injection head stops gas conveying, the movable mold body is pushed by means of external force to perform mold closing operation again, and in the mold closing process, the connecting rod can generate an extrusion effect on the sealing piece, so that the sealing piece is prevented from being damaged. The volume of the cavity in the sealing state is obtained by calculating the total conveying amount of the gas and the amount of the gas finally remaining in the sealing piece, and in the subsequent using process, as long as the amount of the injected gas does not exceed the volume, the mold body can maintain the sealing state.

The invention discloses an anti-rust fastening connecting pin suitable for hinging. The anti-rust fastening connecting pin is composed of a pin, a wear-resistant sleeve, a limiting gasket and a lantern ring. After the pin rod of the pin is sequentially sleeved with the wear-resistant sleeve and the limiting gasket, the pin rod is riveted and fixed with the lantern ring; the two ends of the wear-resistant sleeve are embedded into the pin cap and the limiting gasket respectively to be in clearance fit connection with the pin cap. The problem that rotation cannot be achieved due to the fact that an existing railway wagon round pin and a lever mounting hole are corroded seriously can be effectively solved, and even if the abrasion-resistant sleeve and the lever mounting hole are corroded and cannot rotate, the pin rod of the pin and the abrasion-resistant sleeve can still keep a good rotation function. By means of the ring groove rivet connection principle, the situation that the wear-resisting sleeve is disengaged from the limiting gasket due to the fact that the limiting gasket retreats due to connection looseness is prevented, a relatively good sealing environment is kept between the whole pin rod and the wear-resisting sleeve, the outer surface of the pin rod and the inner surface of the wear-resisting sleeve are prevented from being rusted, and therefore normal use of the rotation function is guaranteed.

The utility model provides a pipeline sealing device for a pipeline hydrostatic test, which comprises a pressure tester and a sealing cover, a pressure relief hole is arranged at the bottom of the pressure tester, a detachable pressure relief valve is arranged on the pressure relief hole, a first sealing flange is arranged at the top of the pressure tester, and a second sealing flange matched with the first sealing flange is arranged at the bottom of the sealing cover. The first sealing flange and the second sealing flange are in sealing connection through a first sealing bolt, a sealing gasket is arranged in the pressure tester, a stud is connected to the sealing gasket, the stud penetrates through a threaded hole matched with the stud in the sealing cover and extends out of the sealing cover, and a rotating valve is arranged at the end, located above the sealing cover, of the stud; the side face of the pressure tester is provided with a short connecting pipe communicated with the interior of the pressure tester, the outer wall of the short connecting pipe is provided with a first connecting flange, the end of the short connecting pipe is sleeved with a hose, the hose is sleeved with a second connecting flange, the first connecting flange and the second connecting flange are in sealed connection through a second sealing bolt, and the hose is sleeved with a hoop.

The application provides a multifunctional modular combination valve for a space vehicle cold air pressurization system, comprising a valve body and a subassembly installed on the valve body, wherein the subassembly comprises an electric explosion valve, a buffer valve, a pressure reducing valve, a safety valve and a pressure sensor; the valve body is a structure with multiple cavities inside; an air inlet interface and an air outlet interface are arranged side by side on one side of the valve body; the valve body is externally provided with mounting portions corresponding to the subassembly; and each subassembly is threadedly and sealingly connected to the valve body. The application has the advantages of compact structure, small size, simplified pressurization system structure layout, reduced space envelope size, improved assembly process, improved maintainability, satisfaction of the demand for miniaturization, light weight and integration of a new generation of aircraft, reduction in the number of high-pressure pipelines and welds in the pressurization system, reduction in the system weight, improvement in the sealing reliability and anti-mechanical environment performance.

The application provides a packaging method of an LED lamp bead and the LED lamp bead, and belongs to the technical field of LEDs. Specifically, a plurality of LED chips are provided, the first surface of the LED chip is provided with a welding electrode; the second surface of the plurality of LED chips is arranged on a bottom film, the second surface is arranged opposite to the first surface; the adjacent LED chips are provided with a gap; a glue layer is formed in the gap, and the surface of the glue layer is not higher than the first surface of the LED chip. By controlling the surface of the glue layer to be not higher than the first surface of the LED chip, the complete exposure of the first surface and the welding electrode is maximized, an unobstructed welding interface is provided for welding, and the problem that the glue layer around the welding electrode is expanded by heat and stress to affect the welding effect is fundamentally avoided.

The invention relates to the technical field of ductile iron production, and discloses an automatic adding device and method for ductile iron casting alloy by a punching method, comprising a spheroidizing furnace body, a sealing part arranged in a furnace mouth of the spheroidizing furnace body, and used for opening and closing the furnace mouth of the spheroidizing furnace body; an adjusting part is used to control the furnace mouth of the spheroidizing furnace body, so as to realize automatic switching of loading and unloading processes and iron casting processes; the extension of the inner rod of the hydraulic rod can make the top cover rise and open the furnace mouth for loading operations; the contraction of the inner rod makes the top cover fall and close the furnace mouth for iron casting processes, thereby improving production efficiency and reducing the complexity and labor intensity of manual operations; the blocking arm of the injection part can automatically seal and open the injection hole by cooperating with a hanger and an arc groove, so as to realize sealing and heat preservation of the heat in the furnace and automatic control of the injection operation, thereby ensuring the stability and continuity of the production process.

The utility model discloses a novel battery shell structure, and relates to the field of nickel-metal hydride battery shells, the novel battery shell structure comprises a shell, one end of the shell is open, the open end of the shell is connected with a shell cover, a sealing gasket is arranged on the outer side wall of the lower end of the shell cover in a surrounding manner, and two symmetrically arranged connecting components are arranged between the shell and the shell cover; the connecting assembly comprises a barrel fixedly connected with the inner wall of the shell, the barrel is located on one side of the open end of the shell, one end of the barrel is connected with a limiting ring, an air hole is formed in the other end of the barrel, a spring is arranged in the barrel, and one end of the spring is connected with a piston. According to the utility model, the connecting assembly is arranged between the shell and the shell cover, so that the shell and the shell cover can be conveniently disassembled and assembled, the sealing performance of the connection between the shell and the shell cover is also improved, dust and humid space are prevented from entering the shell, and a good sealing environment is provided for the battery.

This utility model relates to the field of measuring instrument protection technology, and discloses an electromagnetic flowmeter with a protective structure, including a protective top cover. A detachable nut is threaded to the bottom of the protective top cover, and a fixing beam is threaded to the bottom of the detachable nut. The protective cover is threaded to the bottom of the fixing beam, and two transmission pipe ports are fixedly connected to the left side of the protective cover. In this utility model, the operation of the internal electromagnetic flowmeter structure is ensured by the fixing of the protective top cover and the protective cover. The additionally provided fixing beam and inspection door can be disassembled and opened for maintenance, thus achieving a closed and detachable effect for the electromagnetic flowmeter. This provides both protection and convenient operation. With the cooperation of the pipeline reinforcement layer and the sealing flange structure, the bottom flow pipe and transmission pipe are protected against damage, thereby solving the problem of damage to the central detection pipe caused by human or environmental factors in industrial production.

The invention provides a method for manufacturing a vehicle dynamic axle load monitoring sensor based on a piezoelectric film and the sensor, and relates to the technical field of sensors, and the method comprises the steps: employing a conductive glue solution to enable a conductive lead to be installed at the short edge positions of the two surfaces of the piezoelectric film; epoxy resin sheets are mounted on two surfaces of the piezoelectric film; mounting rubber gaskets on the epoxy resin sheets on the two surfaces of the piezoelectric film; placing the piezoelectric film sensing element provided with the conductive lead, the epoxy resin sheet and the rubber gasket into a gap between an upper pressure applying structure and a lower pressure bearing structure of the circular packaging structure, and leading out the conductive lead from the lead leading-out through hole; the upper cover plate, the lower cover plate and the circular packaging structure are fixed through bolts, and a conductive lead is led out along a groove of the lower cover plate and is bonded and fixed; and waterproof sealing is performed after the circular packaging structure is jointed with the upper and lower cover plates. According to the method, the sensor and the road structure can form a good structural system, so that the monitoring precision and durability of the piezoelectric sensor are improved.

The utility model belongs to the technical field of building component curing equipment, and particularly relates to a movable concrete curing steam generator which comprises a base, and a cavity is formed in the base. A steam assembly is arranged in the cavity; a steam discharge seat is arranged at the top of the cavity; a component container is detachably arranged on the surface of the cavity; a steam inlet is formed in the bottom of the component container; a sliding type mechanical sealing mechanism is arranged in the steam discharge seat relative to the steam inlet; and an opening and closing mechanism is also arranged in the steam discharge seat. The component container is communicated with the steam assembly in the cavity through the steam discharge seat; when steam curing is carried out, due to the existence of the sliding type mechanical sealing mechanism, an excellent sealing environment can be formed between the container and the cavity, and steam leakage can be reduced or even avoided.

The present invention discloses a SOFC or SOEC with a long-life sealing interface and a preparation method thereof, and belongs to the field of fuel cell technology. The sealing interface of SOFC or SOEC is formed by the contact between a sealing layer, a battery cell, and a metal connector. The present invention adopts spinel as a coating material for the metal connector, and adopts a staged heat treatment to form a spinel coating with high density and strong adhesion to improve the durability and overall performance of the metal connector; the present invention also optimizes the sealing layer material system, that is, the sealing layer is prepared by using a SiO2-MgO-Al2O3-SrO-V2O5 system, which not only improves the resistivity of the sealing layer, but also improves its hardness and fracture strength, and at the same time, the thermal expansion coefficient of the sealing layer is matched with the thermal expansion coefficient of the metal connector and the battery cell under the premise of ensuring airtightness, thereby improving the durability of the sealing interface and making it have a long life.

The utility model relates to a soft bag medicine plug which comprises a connector, the connector comprises a first circulation pipe and a second circulation pipe which are internally communicated, the first circulation pipe is inserted into a guide pipe of a soft bag, and the second circulation pipe is in butt joint with a nipple of an injector. A protective ring is arranged on the peripheral wall of the second runner pipe, and a containing space exists between the protective ring and the second runner pipe; a rubber plug is arranged at the end, away from the first runner pipe, of the second runner pipe and used for sealing the end, away from the soft bag, of the connector. A connecting ring is in threaded connection with the end, away from the first runner pipe, of the second runner pipe, the connecting ring is fixedly connected to the end, provided with the nipple, of the syringe barrel, the connecting ring is coaxially arranged on the outer side of the nipple, the distance between the connecting ring and the nipple is the thickness of the second runner pipe, and the nipple is inserted into the second runner pipe. The distance between the outer peripheral wall of the second runner pipe and the inner peripheral wall of the end, close to the injector, of the protection ring is consistent with the thickness of the connecting ring. According to the application, liquid medicine with high consistency can be conveniently added or extracted, and the sealing performance is good.

The utility model discloses a nitrogen charging photoelectric load cabin and a nitrogen charging device, the interior of the nitrogen charging photoelectric load cabin is used for installing photoelectric equipment, the nitrogen charging photoelectric load cabin comprises a cabin body, charging connector assemblies respectively installed at the upper end and the lower end of the cabin body, and shaft system assemblies respectively installed at the two sides of the cabin body, comprising a front cover, a middle cylinder and a rear cover which are sequentially arranged, first sealing pieces are arranged between the front cover and the middle cylinder and between the rear cover and the middle cylinder, and first through holes and second through holes are sequentially formed in the upper end, the lower end, the left side and the right side of the middle cylinder. The nitrogen charging photoelectric load cabin and the nitrogen charging device are low in cost, the gaps are sealed through the sealing pieces, the nitrogen charging photoelectric load cabin is in a good sealing state under the condition that nitrogen is not charged, and then a good sealing environment is provided for nitrogen charging; and the air tap at the upper end of the nitrogen-filled photoelectric load cabin is used for feeding air, and the air tap at the lower end of the nitrogen-filled photoelectric load cabin is used for discharging air, so that the equipment is more beneficial to nitrogen filling.