656results about How to "Improves sealing reliability" patented technology

The invention relates to the technical field of steam extraction check valves, and discloses a design method and device for quickly responding to a steam extraction check valve under a high-parameter working condition, and the method comprises the following steps: constructing a valve working condition database and a valve body database; based on the valve working condition database and the valve body database, a valve performance prediction model is constructed, and a valve state quantity prediction value is obtained through performance influence factors collected in real time; correcting the predicted value to obtain a valve state quantity corrected value; a valve control environment based on reinforcement learning is established, a valve optimization control strategy model is constructed, a real-time optimal control action is generated and executed based on a valve state quantity correction value, and efficient optimization control over the valve is achieved; according to the method, through combination of data-driven performance prediction and reinforcement learning optimization control, rapid response and efficient operation of the steam extraction check valve under the high-parameter working condition are achieved, and the reliability and the energy-saving effect of the system are improved.

The utility model discloses a battery monomer, a battery device and an electric device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a shell, an electrode component and a pole component, the electrode component is arranged in the shell, the shell comprises a first shell wall, the pole component is arranged on the first shell wall and comprises a pole and a clamping structure, the pole is connected with the electrode component, and the clamping structure is connected with the first shell wall; the clamping structure surrounds the pole and is insulated and hermetically matched with the pole through the insulated sealing structure, the clamping structure comprises a first clamping piece and a second clamping piece which are connected, the first clamping piece is bent towards the pole, the first clamping piece and the second clamping piece form a clamping groove for clamping the pole together, the first clamping piece comprises a first clamping part bent towards the pole, and the second clamping piece comprises a second clamping part bent towards the pole. The plurality of first clamping parts are arranged along the circumferential direction of the pole, and a discontinuous opening is formed between at least two adjacent first clamping parts, so that the problems of wrinkles, material stacking and the like after the first clamping parts are bent are favorably solved, and the reliability of the battery monomer is improved.

The utility model discloses a fluid connector, and relates to the technical field of fluid communication, the fluid connector comprises at least two valve seats with communication channels and valve cores which are rotatably arranged on the opposite sides of the two valve seats and used for opening and closing the communication channels, and the valve cores are provided with communication parts; the two valve elements are provided with a restraining mechanism to limit synchronous rotation of the two valve elements, the adjacent combination faces of the two valve elements are in contact sealing, and a position state enables the communicating part to communicate with the communicating channels in the two valve seats. According to the fluid connector, only two relative rotation positions exist, namely the two valve elements rotate relative to the two valve seats correspondingly, the sealing performance of the fluid connector can be guaranteed only by forming dynamic sealing at the two positions, and therefore relative rotation between the valve elements and the valve seats can be reduced, use of sealing assemblies can be reduced, and the cost is reduced. Therefore, the overall sealing performance of the fluid connector can be improved, the sealing reliability of the fluid connector is higher, and the machining cost and the machining difficulty can be reduced.

The invention discloses a battery device and a power utilization device, and the battery device comprises a box body which is internally provided with a containing cavity and comprises a first plate; the heat exchange assembly comprises a first heat exchange part and a second heat exchange part which communicate with each other, the first heat exchange part is arranged outside the box body, and the second heat exchange part is arranged on the face, facing the containing cavity, of the first plate; the connecting block is arranged on the first heat exchange part; the heat exchange connector penetrates through the connecting block in the first direction and then is connected with the open hole in the first heat exchange part in a sealed mode, and the heat exchange connector is located outside the connecting block and welded to the connecting block. According to the scheme, the sealing performance of connection between the heat exchange connector and the first heat exchange part can be guaranteed, the sealing performance of the heat exchange connector and the connecting block can be guaranteed, and the sealing performance of the heat exchange connector during connection is effectively improved. Due to the fact that the heat exchange connector is connected with the first heat exchange part and the connecting block in a sealed mode, the sealing reliability can be improved.

A ball type packaging bottle comprises an outer bottle body (1), a bottle cap (2), a rolling ball (3), a connecting piece (4) and an inner bottle body (5), the rolling ball (3) is arranged in the connecting piece (4), a limiting piece (6) is arranged on an inner ring of the bottle cap (2), the connecting piece (4) comprises a connecting base (41), a limiting ring (43) and a rolling ball cavity (42), the diameter of an inner cavity of a barrel is matched with the outer diameter of the rolling ball (3), and the rolling ball (3) is arranged in the rolling ball cavity (42); the connecting seat (41) is provided with a liquid outlet hole (44) and an annular molded surface (45) attached to the outer surface of the rolling ball (3); the opening of the limiting ring (43) shrinks inwards for a certain distance along the outer surface of the rolling ball (3); in the non-use state, the bottle cap (2) covers the connecting piece (4), the limiting piece (6) is in interference fit with the limiting ring (43), and at least one position between the rolling ball (3) and the limiting ring (43) or between the rolling ball (3) and the annular molded surface (45) is in sealing fit. By arranging the limiting ring (43) with the opening contracting inwards and pressing the limiting ring (43) through the limiting piece (6) on the bottle cap (2), the sealing reliability of contact between the rolling ball (3) and the sealing face in the non-use state is improved, and the use experience of consumers is improved.

According to the valve device, a valve seat component of the valve device is provided with a step part, the lower end face of a sealing gasket abuts against the step part, and a first circulation channel is formed between the lower end face of the sealing gasket and the step part; the first circulation channel can be communicated with a space or a gap formed between the sealing gasket and the valve seat component, in this way, refrigerants in the space or the gap can be discharged through the first circulation channel, adverse effects caused by accumulation of the refrigerants are avoided, and the sealing reliability of the valve device is improved. According to the valve device provided by the other embodiment of the invention, the valve device is provided with the second circulation channel, the second circulation channel can communicate with the space or the gap formed between the sealing gasket and the valve seat component, in this way, the adverse effect generated by refrigerant accumulation can also be avoided, and the sealing reliability of the valve device is improved.

The utility model discloses a battery box body, a battery and a power utilization device, the battery box body comprises a first box body, a second box body, a first sealing piece and a first fastening piece, the first box body and the second box body are in sealing connection to form a sealing cavity, the first box body comprises a first sealing surface, and the second box body comprises a second sealing surface; the first sealing face and the second sealing face are matched to form a sealing interface, and the first sealing piece is arranged on the sealing interface to seal the first sealing face and the second sealing face. The first fastener penetrates through the first sealing face and the second sealing face to connect the first sealing face and the second sealing face to clamp the first sealing piece, so that the first sealing face and the second sealing face are connected in a sealed mode, the first fastener is completely located on the outer side of the sealing cavity, and the first fastener is located on the side, away from the sealing cavity, of the first sealing piece in the extending direction of the sealing interface. And when a certain first fastener or a small number of first fasteners fail, the sealing performance of the battery box body is still maintained, the failure risk is reduced, and the working safety is improved.

The invention provides a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a shell, a pole column body and a pole column cover plate, the shell defines a containing cavity, the pole column body is arranged on the shell, a communication channel communicated with the containing cavity is formed in the pole column body, the pole column cover plate is arranged on the pole column body, and a liquid injection hole communicated with the communication channel is formed in the pole column cover plate. According to the battery monomer, the area of the pole structure is increased under the condition that the size of the shell is not changed, so that the current passing efficiency of the battery monomer is improved, the processing and forming of the liquid injection hole are facilitated, the structure and processing of the shell are simplified, in addition, in the production and use processes, the possibility of splashing and overflowing of electrolyte is reduced, and the service life of the battery monomer is prolonged. Therefore, the reliability and the manufacturability of the battery monomer are improved.

The invention discloses a proton exchange membrane electrolytic cell sealing bipolar plate, which belongs to the technical field of water electrolysis hydrogen production, and comprises a bipolar plate body, a water inlet, a water / oxygen outlet, a first hydrogen outlet, a second hydrogen outlet, a water / oxygen flow field area, a hydrogen flow field area, an anode closed sealing groove and an anode sealing ring, the first hydrogen outlet, the water / oxygen outlet, the second hydrogen outlet and the water inlet are positioned at the edge of the bipolar plate body and are through holes; the first hydrogen outlet and the second hydrogen outlet are diagonally arranged; the water inlet and the water / oxygen outlet are diagonally arranged; a water / oxygen flow field area is arranged on the anode surface of the bipolar plate body; a hydrogen flow field area is arranged on the cathode surface of the bipolar plate body; the anode closed sealing groove is formed in the anode surface of the bipolar plate body; and an anode sealing ring is arranged in the anode closed sealing groove. The water / oxygen flow field area and the hydrogen flow field area are optimally designed, so that water flow can be more uniformly distributed, and gas flow is enhanced.

The invention discloses a pressure detection module and a pressure sensor. The pressure detection module comprises a pressure joint used for being connected to a detected pipeline and provided with a fluid passage used for being in fluid communication with the detected pipeline; the force sensitive component is connected to one end of the pressure joint and is in fluid communication with the pressure joint; the strain gauge is attached to the surface of the force sensitive part and is used for detecting the strain of the force sensitive part; the electric connector comprises a seat body and a contact pin which passes through and is fixed on the seat body; the electric connection plate is used for electrically connecting the contact pin to the strain gauge; and the end cap comprises a peripheral wall, an end wall and an opening opposite to the end wall. The force sensitive part and the electric connecting plate are accommodated in the inner cavity of the end cap, and one end of the pressure joint is welded to the opening end of the end cap so as to seal the opening of the end cap; an insertion hole is formed in the end wall of the end cap, and the seat body is inserted into the insertion hole and welded to the end wall so as to seal the insertion hole of the end cap. The sealing structure is simple, high in sealing reliability and low in cost.

The utility model discloses a leakproof structure of a plate heat exchanger, and particularly relates to the technical field of plate heat exchangers, the leakproof structure of the plate heat exchanger comprises a metal sheet, a sealing mechanism is arranged on the metal sheet, the sealing mechanism comprises a first sealing assembly, the first sealing assembly is arranged on the front surface of the metal sheet, and the first sealing assembly comprises a first gasket and a second gasket; a first protruding strip is arranged on one side of the first gasket, and a first sealing strip is arranged on one side of the first protruding strip. The first sealing assembly is arranged on the front surface of the metal sheet, the second sealing assembly is arranged on the rear surface of the metal sheet, the second sealing assembly comprises a second gasket, and a second sealing strip is arranged on one side of the second gasket. Therefore, the sealing performance between the two adjacent metal sheets is improved, and deformation and gaps cannot be generated when the metal sheets continuously work in high-temperature and high-pressure environments.

The invention relates to a sealing structure and a container, and belongs to the technical field of equipment sealing. One of the sealing structures includes a ring assembly including an elastic energy storage ring; the floating ring is provided with a container barrel contact wall surface and a container end cover contact wall surface, a first mounting position is arranged on the container barrel contact wall surface, and a second mounting position is arranged on the container end cover contact wall surface; and the first mounting position and the second mounting position are both provided with the ring assemblies. The ultrahigh-temperature and high-pressure sealing condition can be met during use, large matching clearances can be adopted between the floating ring and the container end cover and between the floating ring and the container barrel by utilizing the characteristics of the floating ring and the elastic energy storage ring during assembly, and installation is convenient.

The utility model relates to the technical field of connectors, and particularly discloses a connecting end which is used for being matched with a butt joint end and comprises a valve seat and a valve core. Wherein a flow channel is arranged in the valve seat; the valve element is movably arranged in the valve seat, a pushing groove is formed in the valve element, the pushing portion on the butt joint end is inserted into the pushing groove to drive the valve element to move so as to open or close the flow channel, the valve element is of an integrated structure, and at least the wall face, making contact with the valve seat, of the valve element is made of plastic materials so as to be sealed with the valve seat. According to the connecting end provided by the utility model, the valve core is directly sealed with the valve seat, so that fluid in the flow channel can be blocked from the outside, and the fluid in the flow channel is prevented from leaking from a matching surface between the valve core and the valve seat. And the valve element is of an integrated structure, so that the situation that the sealing performance is reduced due to displacement of a conventional sealing gasket is avoided, and the sealing reliability of the connecting end is improved. The structure is simplified, and the assembly process is simpler. The utility model further discloses a fluid connector which also has the technical effects.

The present invention provides a magnetically closed and drainable water film-sealed and odor-proof floor drain core, which belongs to the technical field of drainage pipe systems. It solves the problems of the existing floor drain core structure design and distribution being complex, the poor sealing effect and the poor odor-proof performance, as well as the poor drainage volume and drainage effect. The magnetically closed and drainable water film-sealed and odor-proof floor drain core comprises a floor drain core body, the top of the floor drain core body being a water inlet, the bottom of the floor drain core body being a water outlet, a magnetically closed cover plate being movably connected at the water outlet of the floor drain core body, a soft sealing pad movably sealed with the water outlet being arranged on the magnetically closed cover plate, a limited portion being reversely connected to the movable connection end of the magnetically closed cover plate, a first permanent magnet being fixedly installed in the said limited portion, a magnetically active unit being arranged between the floor drain core body and the magnetically closed cover plate, and a connecting seat being arranged on the floor drain core body. The present invention has the advantages of ingenious structural design, good sealing effect, and good drainage volume and drainage effect.

The invention provides a fluid type shaft driving mechanism which comprises a cylinder body, a main shaft and a transmission arm, the transmission arm is arranged in the cylinder body and can rotate in the cylinder body around the axis of the main shaft, and the cylinder body is divided into a first cavity and a second cavity by the transmission arm. The first sealing bag body is arranged in the first cavity, the second sealing bag body is arranged in the second cavity, and fluid connectors are arranged on the first sealing bag body and the second sealing bag body. When the fluid enters the first sealing bag body, the transmission arm is pushed to move towards the direction of the second cavity; and when the fluid enters the second sealing bag body, the transmission arm is pushed to move towards the direction of the second cavity. According to the fluid type shaft driving mechanism, the manufacturing cost is reduced, and the output torque of the swing driving mechanism is improved.

The invention discloses an ultrahigh-pressure subsurface safety valve, belongs to the technical field of petroleum and natural gas well completion, and aims at solving the problem that an existing subsurface safety valve is prone to leakage under the high-pressure condition. The ultrahigh-pressure subsurface safety valve comprises an upper connector (1), a spring barrel (3) and a lower connector (4) which are sequentially connected from top to bottom, and a piston cavity (28) is formed in the side wall of the upper connector (1); a piston mechanism is connected into the piston cavity (28) in a sealing mode, a positioning sealing nut (9) is arranged in the lower end of the piston cavity (28), and when the valve plate sealing mechanism is in an open state, the piston mechanism is connected with the positioning sealing nut (9) in a metal sealing mode. When the valve plate sealing mechanism is in a closed state, the piston mechanism is in metal sealing connection with the surface of the piston cavity (28). Under the conditions of high pressure and high temperature, the metal sealing connection performance is not easy to change, the product stability is improved, and the purpose of reducing the leakage rate of the safety valve is achieved.

The invention provides a high-temperature-resistant electric connector and a preparation method thereof, and relates to the technical field of electric connectors. The high-temperature-resistant electric connector comprises a contact body, an insulator, a shell and a split ring structure, the split ring structure is arranged between the insulator and the shell, the split ring structure comprises an annular side wall and a base connected to one axial end of the annular side wall, the base and the annular side wall define a cavity used for containing the insulator, a notch is formed in the annular side wall, and the insulator is arranged in the cavity. The notch extends in the axial direction of the annular side wall, and one end of the notch communicates with the opening of the cavity. The split ring structure is additionally arranged between the insulator and the shell, sealing connection between the insulator, the contact body and the split ring structure is achieved through brazing, internal stress concentration during service of the insulator and the shell is remarkably reduced, and the sealing reliability between the insulator and the shell in the electric connector at the high temperature is improved; and the sealing performance of the product can meet the actual use requirement.

The invention discloses a rectangular waveguide sealing window structure for realizing broadband transmission, which belongs to a microwave signal detection device and comprises a first rectangular waveguide cavity, a second rectangular waveguide cavity and a rectangular dielectric block arranged between the first rectangular waveguide cavity and the second rectangular waveguide cavity, the first rectangular waveguide cavity comprises a first rectangular waveguide shell and two first stepped transition structures embedded into an inner cavity of the first rectangular waveguide cavity, and the second rectangular waveguide cavity comprises a second rectangular waveguide shell and two second stepped transition structures embedded into the second rectangular waveguide shell. The opposite side faces of the two first stepped transition structures and the two second stepped transition structures are provided with identical tooth-shaped steps, the second rectangular waveguide shell is further internally provided with an installation cavity communicated with the second I-shaped sliding groove, the two waveguide cavities are connected through screws, and the rectangular dielectric block is fixedly installed in the installation cavity. The vertically symmetrical multi-stage stepped impedance matching network provided by the invention realizes excellent transmission performance with low voltage standing-wave ratio in a wide frequency band, and is suitable for a millimeter wave system with high power and wide frequency band.

The utility model provides a check valve which comprises a valve body, a valve cavity is formed in the valve body, and an inlet and an outlet which are communicated with the valve cavity are formed in the two ends of the valve body respectively. The first valve seat and the second valve seat are arranged on the inner side of the inlet and the inner side of the outlet respectively; the guide shaft is connected to the first valve seat and the second valve seat in a sliding manner; the valve clack is connected to the guide shaft; the elastic piece is arranged between the valve clack and the second valve seat, and the valve clack can block the inlet under the action of the elastic piece; the guide shaft is connected to the first valve seat and the second valve seat in a sliding mode, the layout structure of double supports at the two ends of the guide shaft is achieved, the overlong part of the guide shaft is prevented from being in a suspended state, the guide shaft is prevented from being abraded under the action of the bending moment of a cantilever, stable operation of the valve clack is guaranteed, and therefore the sealing reliability of the check valve is improved.

The invention provides a Y-shaped composite multi-seal stop valve, which belongs to the technical field of stop valves and comprises a valve body, a sealing seat and a valve block, the sealing seat and the valve block are arranged on the valve body, a first valve seat and a second valve seat are respectively arranged in the valve body, and a sealing groove is arranged at the upper end of the valve body. According to the valve, the adjusting block is matched with the wedge-shaped block to force the second sealing plug to seal the second valve seat while sealing of the first valve seat is completed, and medium leakage can still be prevented under the condition that sealing of the first sealing plug fails, so that the overall sealing reliability of the valve is improved; the piston rod is matched with the annular air bag to inflate the air bag in the secondary sealing process of the valve, so that the side wall of the air bag tightly abuts against the inner walls of the sealing groove and the annular groove to complete sealing, expansion can be freely conducted according to pressure changes, sufficient attachment can still be conducted even under the condition that the sealing face deforms, and the sealing effect is good. And the gap is actively filled, the better sealing effect can be improved, and then the sealing effect of the whole valve is improved.

The invention belongs to the technical field of gas insulated switch devices, and particularly provides an insulating sleeve for a gas insulated switchgear and a power distribution switch system. The insulating sleeve comprises an insulating pouring body embedded with a conductive rod, the insulating pouring body is provided with a connecting part, one end of the connecting part is used for being in sealed connection with one of the two adjacent gas-filled cabinets, the other end of the connecting part is in sealed connection with a corrugated pipe, and one end, deviating from the connecting part, of the corrugated pipe is used for being in sealed connection with the other one of the two adjacent gas-filled cabinets. And the interior of the corrugated pipe can be communicated with an air chamber of the inflatable cabinet. The power distribution switch system comprises the insulating sleeve. When each gas-insulated switchgear is connected in a combined manner, even if a certain error exists, the error can be compensated through the deformation of the corrugated pipe, and the sealing performance of the gas chamber can still be ensured after the corrugated pipe is deformed, so that the sealing reliability of the insulating sleeve is improved.

The invention discloses a light and small wide-temperature-amplitude laser for space application. The light and small wide-temperature-amplitude laser comprises a laser base, a laser shell and a laser resonant cavity. The laser base and the laser shell are combined to form a sealed cavity; the laser resonant cavity is located in the sealed cavity and comprises an LD array, an LD coupling assembly, a laser crystal, a polarization element, an electro-optical Q switch, a quarter-wave plate and an output mirror which are sequentially arranged, and pump light emitted by the LD array sequentially passes through the coupling assembly, the laser crystal and the polarization element and is emitted through the quarter-wave plate and the output mirror when the electro-optical Q switch is turned on. The weight of the laser can be greatly reduced, the size of the laser is reduced, meanwhile, wide-temperature-amplitude work can be achieved, and the work power consumption of the laser is reduced.

The high-pressure hydrogen storage cylinder sealing structure comprises a plastic inner container, a cylinder valve seat and a locking nut, the cylinder valve seat is located at a cylinder opening of the plastic inner container, the locking nut is in threaded connection with the cylinder valve seat, and extrusion sealing is formed among the locking nut, the plastic inner container and the cylinder valve seat. The sealing device is simple in structure and convenient to install, the multi-sealing effect can be achieved by tightening the locking nut, the air tightness of connection between the plastic inner container and the metal valve seat can be guaranteed, the failure probability is reduced, and the sealing reliability is improved; by arranging the structure with the rotation stopping function and adopting the structure that the plastic inner container wraps the shoulder of the cylinder valve seat, the combination effect of the plastic inner container and the cylinder valve seat is promoted, the connection strength and the overall stability of the structure can be improved, it is guaranteed that the plastic inner container and the cylinder valve seat cannot be separated under the long-term working state, and the service life of the cylinder valve seat is prolonged. Potential safety hazards caused by pressure rise after the hydrogen storage cylinder is inflated are avoided, and the service life and the safety of the hydrogen storage cylinder are effectively prolonged and improved.

The application relates to the technical field of wastewater treatment equipment, in particular to a zero-emission multistage wastewater treatment device for industrial high-salinity wastewater, which comprises a base, a fixing frame fixedly installed on the base and a supporting limiting frame fixedly installed on the fixing frame, the supporting limiting frame is slidably connected with a heat exchange box, the front end face of the fixing frame is provided with limiting assemblies corresponding to the heat exchange box on both sides, a sedimentation tank and a core treatment tank are installed on the fixing frame from top to bottom and located at the bottom of the heat exchange box, the heat exchange box, the sedimentation tank and the core treatment tank are sequentially communicated through connecting channels, a feeding pipe is arranged on the side wall of the sedimentation tank, the sealing assembly is driven to rotate by a motor-driven screw rod, the extrusion frame is driven to slide along the guide column, the pressure of the extrusion frame on the third sealing frame can be automatically adjusted, the extrusion plate can be tightly combined with the third sealing frame, the pressure is uniformly distributed, the traditional manual sealing adjustment mode is replaced, and the sealing reliability is further improved.

The utility model discloses a riveting-based explosion-proof valve structure and a battery cover plate, and the riveting-based explosion-proof valve structure comprises an annular groove which is formed in a cover plate main body and is arranged in an outward offset manner relative to a blast hole; the sealing element is sleeved in the annular groove, and the height of the sealing element is greater than the depth of the annular groove; the sealing cover side wall is formed by extending the cover plate main body along the height direction, and is folded and covered towards the direction of the annular groove so as to press against the explosion-proof membrane; a protruding part is formed on the inner side face of the sealing cover side wall. The sealing piece is arranged in the annular groove, and the explosion-proof membrane covers the sealing piece; the sealing cover side wall is folded and pressed against the explosion-proof membrane, and the inner side surface acts on the explosion-proof membrane to indirectly press against the sealing piece to deform, so that the inner side surface of the sealing cover side wall is parallel to the outer edge of the cover plate main body; according to the anti-explosion valve structure and the battery cover plate provided by the invention, the problems that a specified explosion value cannot be reached or the explosion value is relatively low and the service life of a battery is shortened due to the fact that tiny air holes are generated in a welding seam after welding and heat conduction of an existing anti-explosion valve structure are solved.

The utility model relates to the technical field of flanges, and discloses a flange connecting structure which comprises a first flange, a second flange, a first sealing piece and a second sealing piece. The first flange comprises a first connector part and a first connecting part, the first connector part is provided with a first flow channel, and the first connecting part is arranged around the first end of the first connector part; the second flange comprises a second connector part and a second connecting part, the second connector part is provided with a second flow channel, the second connecting part is arranged around the first end of the second connector part, and the end face of the first end of the second connector part is in sealed butt joint with the end face of the first end of the first connector part so that the second flow channel can communicate with the first flow channel; the first connecting part and the second connecting part are fixedly connected through a bolt; a first sealing piece and a second sealing piece are arranged between the first end face of the first connector part and the first end face of the second connector part, and at least one cooling liquid cavity is formed in the pipe wall of the first connector part. The flange connecting structure can improve the sealing reliability.

The large-diameter double-spring safety valve comprises a valve body, a water inlet channel, a water outlet channel, a valve rod and a valve seat arranged on the water inlet channel are arranged in the valve body, the valve rod is sleeved with a valve clack which is connected with the valve seat in a sealed mode and used for controlling the communication state of the water inlet channel and the water outlet channel, and a first installation cavity is formed in the water inlet channel. A diaphragm and a first magnetic part are arranged in the first installation cavity, the valve rod comprises an upper valve rod body and a lower valve rod body, a second installation cavity is formed in the upper valve rod body, a second magnetic part is arranged in the second installation cavity, and the first magnetic part and the second magnetic part are arranged in a magnetic pole repelling mode. After water enters the water inlet channel, the diaphragm is driven to move, then the first magnetic piece is moved, the second magnetic piece repelling the first magnetic piece abuts against the upper valve rod through repelling magnetic force, and the upper valve rod moves to drive the valve clack to open the water inlet channel and the water outlet channel to communicate for water outlet.

The invention discloses a fuel oil drainage control device and method for a multi-oil-way gas turbine or an aero-engine and application, belongs to the technical field of fuel oil control of gas turbines or aero-engines, and is used for rapidly, safely and reliably discharging multi-oil-way fuel oil when the engine is in a stopped state. And meanwhile, independent operation and sealing performance of each oil way in a normal operation state are ensured. The device comprises an upper shell, a lining, an end cover, a valve, a reset spring, an ejector rod and an electromagnetic driving component, a plurality of sets of fuel oil through holes and oil drainage through holes are formed in the lining, and accurate separation and control of a fuel oil channel are achieved through an annular step part and a conical surface sealing structure. The method comprises the steps of initialization, engine normal work, parking oil drainage preparation, fuel oil drainage, multi-oil-way sequential drainage, drainage completion, system reset and the like. The oil drainage device is reasonable in structural design, accurate in control method, remarkable in sealing performance and oil drainage efficiency, suitable for various complex working conditions and wide in application prospect and engineering value.

The utility model discloses a freeze-drying bottle cap assembly which comprises a freeze-drying bottle and a bottle cap, and a convex part is arranged on the outer surface of a bottle body of the freeze-drying bottle; an upper groove and a lower groove are formed in the inner wall of the bottle cap and are the first groove and the second groove respectively, and the second groove is used for being connected with the protruding part in a clamped mode to achieve a half-plug-pressing state. The first groove is used for being connected with the protruding part in a clamped mode, and the full-pressing plug state is achieved. The freeze-drying bottle cap assembly can reliably achieve the half plug pressing state.

The utility model relates to the technical field of control valves, in particular to an automatic control multi-stage adjustable duplex V-shaped hemisphere adjusting ball valve, which comprises a valve body component (1), a valve seat component (3), a valve rod component (4), a lengthened valve cover component (6), a transmission component (7), a rack transmission position adjusting mechanism (8) and a power mechanism (9). The valve rod assembly (4) is arranged on the valve body assembly (1), and the transmission assembly (7) drives the valve rod assembly (4) to rotate under the action of the rack transmission position adjusting mechanism (8) and the power mechanism (9) so that the valve body assembly (1) can be opened or closed. The ball valve has the advantages of being compact in structure, light in weight, high in adjusting precision, high in sealing performance and capable of achieving automatic control, meanwhile, a multi-stage flow adjusting mode is achieved, and accurate flow control can be achieved under various severe working conditions.