13results about How to "Achieving Zero Leakage" patented technology

The utility model discloses a metal sealing ball valve with a valve seat for oil injection sealing, which comprises a valve body, the valve seat is fixedly connected inside the valve body, a first oil injection hole is arranged on the valve body, a second oil injection hole is arranged on the valve seat, the first oil injection hole is communicated with the second oil injection hole, a ball body is arranged inside the valve body, and the ball body is connected with the valve seat. The valve seat is in contact with the spherical surface of the ball body, the second oil injection hole is far away from the first oil injection hole and is communicated to the spherical surface of the ball body, the ball body is fixedly connected with an upper valve shaft, a through round hole is formed in the left side of the valve body, and the upper valve shaft passes through the left side round hole of the valve body and is provided with a driving device far away from the ball body. The driving device is fixedly connected with a support close to the upper valve shaft, and a filler pressing block is fixedly connected in the support close to the driving device. By means of the structure, the valve body, the valve seat, the first oil injection hole, the second oil injection hole and the ball body are arranged, abrasion can be reduced, sealing reliability of a sealing pair is enhanced, and zero leakage is achieved.

The zero-leakage vertical acid condenser comprises an upper tube box, a lower tube box and a vertical tube shell heat exchange assembly, the vertical tube shell heat exchange assembly comprises a shell, an upper tube plate, a lower tube plate, a glass heat exchange tube and a baffle plate, and an air inlet and an air outlet are formed in the upper portion and the lower portion of the shell respectively. The upper tube box and the lower tube box are respectively provided with a flue gas outlet and a flue gas inlet, and the bottom of the lower tube box is provided with an acid discharge port. According to the acid condenser, high-temperature process gas enters the acid cooler from the side face of the bottom, the rectifying wall is arranged at the bottom, the process gas evenly enters all the glass tubes, the breakage probability of the glass tubes is reduced, and the heat exchange performance of the whole heat exchanger is improved. The upper tube plate and the glass heat exchange tube in the acid condenser adopt a zero-leakage sealing form, and the lower tube plate adopts a zero-leakage sealing form, so that zero leakage of the acid condenser can be realized.

The present invention provides a sealing end face structure of a rotating mechanical device, comprising a stationary ring and a moving ring that can rotate relative to the stationary ring, wherein the low-pressure side of the stationary ring or the moving ring is the downstream side, and the high-pressure side of the stationary ring or the moving ring is the upstream side; the downstream side of the relative surface of the stationary ring or the moving ring has a plurality of reverse groove groups, the plurality of reverse groove groups are spaced apart in the radial direction, and each of the reverse groove groups includes a plurality of reverse spiral grooves distributed in the circumferential direction. After adopting a plurality of reverse groove groups, the pumping capacity of the fluid on the downstream side can be enhanced, and at the same time, the reverse spiral grooves in the reverse groove group can store fluid to reduce the friction and wear of the sealing end face, increase the service life of the seal, and ensure the effect of the mechanical seal.

The invention belongs to the cross technical field of deep well mine filling and energy recovery, and particularly relates to a deep well filling pressure reduction and graded pressure energy recovery power generation system, an energy efficiency monitoring method and an operation control method. Comprising an earth surface filling preparation station, a filling vertical pipe, a decompression chamber, a first-stage coupling rotational flow driving device, a second-stage coupling rotational flow driving device, a pressure stabilizing buffer tank and a tail end filling working face. The earth surface filling preparation station conveys slurry into the pressure reduction chamber through the filling vertical pipe, the slurry is conveyed to the first-stage coupling rotational flow driving device through pressure reduction in the pressure reduction chamber, and the first-stage coupling rotational flow driving device drives the first-stage permanent magnet generator to generate electricity. The slurry is conveyed to a secondary coupling rotational flow driving device through a transition pipe after coming out of the primary coupling rotational flow driving device, and the secondary coupling rotational flow driving device drives a secondary permanent magnet generator to generate electricity; the slurry flows out of the secondary coupling rotational flow device and then enters the pressure stabilizing buffer tank, and then is conveyed to a tail end filling working face through the pressure stabilizing buffer tank.

The utility model relates to the technical field of stop valves, in particular to a zero-leakage anti-scouring stop valve which comprises a first valve body and a second valve body, a water inlet pipe and a water outlet pipe are fixedly arranged on the first valve body, a water cavity is formed in the first valve body, a partition plate is fixedly connected in the water cavity, a sealing plug is arranged on the partition plate in a sliding mode, and the sealing plug is arranged on the second valve body. A sealing ring is fixedly connected to the second valve body, a round hole used for being connected with the sealing plug is formed in the partition plate, and an annular rubber ring is fixedly connected to the inner wall of the round hole. The second valve body is fixedly connected with two fixing plates, one side of each fixing plate is provided with a limiting plate, the limiting plates are connected with the fixing plates through a plurality of clamping shafts, and a plurality of clamping grooves are formed in the first valve body. According to the stop valve, zero leakage of liquid can be continuously guaranteed, when the liquid leakage phenomenon occurs, the stop valve can be rapidly overhauled and maintained, and use of the stop valve is facilitated.

The present invention discloses a rubber sleeve with a mounting structure and a pipe for mounting the sleeve, wherein the rubber sleeve is provided with a flow channel running through it, the rubber sleeve is an integrated structure, and at least one independent pressure-charging chamber is provided inside the rubber sleeve, the rubber sleeve is an integrated structure, and at least one independent pressure-charging chamber is provided inside the rubber sleeve, the rubber sleeve at the location of each of the pressure-charging chambers has an outer rubber layer and an inner rubber layer; the outer rubber layer of each of the pressure-charging chambers is provided with inlet and outlet holes, and the inlet and outlet holes are connected to the pressure-charging chamber; the mounting structure includes two limiting parts, and the two limiting parts are fixed at the two ends of the rubber sleeve to clamp the rubber sleeve. The present invention clamps and fixes the rubber sleeve by the limiting parts provided at the two ends of the rubber sleeve, and when the rubber sleeve is installed and maintained later, it only needs to be removed from the limiting parts at the two ends, so the installation and maintenance are convenient.

The present invention discloses a direct-driven two-stage supercritical carbon dioxide compressor, which has the advantages of compact structure, high efficiency and low noise. A direct-driven two-stage supercritical carbon dioxide compressor, characterized in that: the high-speed motor includes a motor housing and a stator, a rotor and an air bearing system arranged in the motor housing, a primary compressor and a secondary compressor are respectively arranged at both ends of the high-speed motor, the impellers of the primary compressor and the secondary compressor are both installed on the rotor of the high-speed motor, the primary compressor and the secondary compressor are connected in series to form a compression system, the air inlet of the primary compressor serves as the air inlet of the compression system, and the air outlet of the secondary compressor serves as the air outlet of the compression system.

The invention belongs to the technical field of environmental engineering, and particularly relates to a contaminated soil micro-foam leaching device and method based on the ATP forming principle, a supporting table is fixedly provided with a large crossed roller bearing, the large crossed roller bearing is provided with three high-frequency vibration tables, the three high-frequency vibration tables are each provided with a reaction tank, and the reaction tanks are arranged on the supporting table; the three reaction tanks are sequentially arranged in a clockwise mode to be a filling station, a leaching station and a discharging station, a discharging component is arranged on the filling station, a micro-foam generating module is arranged on one side of the leaching station and arranged on a supporting table, an anti-leakage collecting barrel is arranged below the discharging station, and a discharging component is arranged on the discharging station. The technical scheme is innovated from the aspect of mass transfer principle, continuous physical conveying of soil can be achieved, targeted transfer of pollutants from the soil to a leaching medium can be actively driven through an ATP bionic mechanism, and three core challenges of mass transfer efficiency, operation cost and secondary pollution are systematically solved.

The application belongs to the technical field of environmental engineering, and particularly relates to a device and method for leaching of contaminated soil micro-foam based on ATP formation principle. A large cross-roller bearing is fixedly installed on a support table. Three high-frequency vibration tables are arranged on the large cross-roller bearing. Reaction tanks are arranged on the three high-frequency vibration tables. The three reaction tanks are sequentially arranged in a clockwise direction as a filling station, a leaching station and a discharging station. A discharging component is arranged on the filling station. A micro-foam generating module is arranged on one side of the leaching station. The micro-foam generating module is arranged on the support table. A leakage-proof collecting barrel is arranged below the discharging station. The application is a technical solution for innovation from the mass transfer principle level. The application can not only realize continuous physical transportation of soil, but also actively drive the targeted transfer of pollutants from soil to leaching medium through ATP bionic mechanism, and systematically solve three core challenges of mass transfer efficiency, operation cost and secondary pollution.

The present application belongs to the technical field of power transmission and transformation project environmental ecological monitoring, and discloses a kind of power transmission and transformation project aquatic ecological influence intelligent monitoring system, by detachable connection and cooperative linkage electromagnetic monitoring module, multiple biological closed exposure module, aseptic periodic sampling module, data transmission, intelligent fusion determination and self-adaptive control module and biological safety and outdoor adaptation module composition.The power transmission and transformation project aquatic ecological influence intelligent monitoring system of the present application has multiple biological cooperation, high evaluation accuracy;Electromagnetic monitoring and biological exposure precise linkage;Aseptic rapid sampling, adapt to field demand;Biological safety is controllable, and adapts sensitive area;Field-laboratory linkage, realizes closed loop evaluation;Intelligent control enhancement, result can be reviewed and other advantages.

The application discloses a hydrogen fuel control system for unmanned aerial vehicles, which comprises a hydrogen bottle, a pressure reducing valve, a hydrogen inlet valve, a first pressure sensor, a fuel cell stack, a steam-water separator, a double-variable peristaltic pump, a second pressure sensor, a controller, a drain valve, a temperature sensor and a current sensor. The system constitutes a closed hydrogen circulation loop to recover unreacted hydrogen. The controller monitors the hydrogen circulation pressure, the stack temperature and the load current in real time through a sensing network composed of double pressure sensors, a temperature sensor and a current sensor, analyzes the load change and the water-heat state based on the built-in program, and cooperatively regulates the rotating speed and the extrusion degree of the double-variable peristaltic pump, dynamically optimizes the flow and the flushing intensity of the hydrogen circulation. The system solves the water-heat management problem of the fuel cell of the unmanned aerial vehicle under dynamic working conditions, improves the hydrogen utilization rate, effectively prevents water flooding and membrane dryness, and guarantees the efficient, stable and long-life operation of the system.

The invention discloses a high-pressure magnetic fluid sealing device which comprises a bearing assembly arranged between a shell and a shaft sleeve and used for bearing radial loads generated when the shaft sleeve rotates at a high speed. The magnetic fluid sealing assembly is arranged on the outer side of the shaft sleeve, located below the bearing assembly and used for achieving zero-leakage precise sealing; the second-stage rotating plane friction sealing assembly is arranged on the outer side of the shaft sleeve, located below the magnetic fluid sealing assembly and used for achieving coarse sealing, unloading and impurity blocking under the high-pressure working condition; wherein the shaft sleeve is sleeved on the outer side of a rotating shaft, and the top of the shaft sleeve is connected with the rotating shaft through a locking sleeve, so that the shaft sleeve and the rotating shaft synchronously rotate. The second-stage rotating plane friction sealing assembly comprises a movable ring which is arranged on the outer side of the shaft sleeve in a sleeving mode. The two static rings are arranged on the upper side and the lower side of the movable ring respectively. According to the high-pressure magnetic fluid sealing device, the existing defects are overcome, the sealing pressure is effectively improved, and zero leakage is achieved.

The invention relates to the technical field of transaction, and discloses a zero-knowledge proof and smart contract-based data fair transaction method, which comprises the following steps of: firstly, generating public safety parameters based on a secp256k1 elliptic curve; the two transaction parties negotiate the selling price of the transaction data, the two transaction parties agree on the unique feature marking one piece of data, the data purchased by the data buyer is in one-to-one correspondence with the features of the marked data, the features are recorded as Mark.Mark and are recorded as public information, and the seller encrypts the data and transmits a ciphertext to the buyer through a chain; selecting public parameters of the zero-knowledge proof protocol through Setup; a random secret key is generated through the Prover; the buyer verifies the authenticity of the ciphertext and performs data verification; and after the data verification is passed, the buyer and the seller perform data transaction. According to the invention, the fairness, the security and the transaction efficiency of the transaction are improved.