282results about How to "Fix the leak" patented technology

The invention relates to the technical field of metal bearings, in particular to a reinforced liquid metal sliding bearing. The enhanced liquid metal sliding bearing comprises a rotor, a stator and liquid metal filled in an assembling gap between the rotor and the stator. The fixed positions of the rotor and the stator are provided with a spiral groove structure, a textured microstructure, an infiltration coating and a sealing coating. By adopting the enhanced liquid metal sliding bearing provided by the invention, the wettability and the wear resistance of a bearing rotating pair can be improved, and the problems of coating falling, wear, poor lubrication and the like of the enhanced liquid metal sliding bearing in a high-vacuum, high-temperature, high-pressure, high-speed and high-load use environment are effectively solved. High-pressure sealing is formed on the gaps between the stator and the rotor and between the limiting rings of the stator and the rotor, the liquid metal is kept in the bearing, the assembled bearing does not need a vacuum environment in the transfer process, meanwhile, external gas is prevented from entering the bearing structure, and the possibility that the liquid metal leaks or gets stuck is reduced.

The invention relates to the technical field of plastic mold drilling, in particular to plastic mold numerical control precision drilling equipment and a using method thereof.The plastic mold numerical control precision drilling equipment comprises a base, a fixed table is movably installed at the top of the base, a rack is fixedly connected to the top of the base, a movable table is installed on the rack, and a pushing plate is slidably connected to the bottom of the movable table; a collecting assembly and a drilling assembly are arranged on the pushing plate; according to the device, firstly, the area around a drilling point can be comprehensively shielded through the collecting assembly, the same contact surface can be autonomously formed according to the uneven surface of the plastic mold, and the waste intercepting effect is further enhanced; and the drilling assembly is matched, during drilling, instant smashing of filiform plastic waste is achieved, efficient collection and treatment of the waste are achieved, air is blown into the material blocking and collecting barrel, on one hand, negative-pressure material suction is assisted, the waste collecting effect is improved, and on the other hand, synchronous cleaning treatment is achieved when the drill bit rotates and ascends.

The invention belongs to the technical field of electricity-coal safe transaction, and discloses an electricity-coal safe transaction method and system based on a block chain. The method comprises the following steps: carrying out key generation and identity authentication based on a trusted mechanism; uploading encrypted real-time electricity and coal supply data based on an electricity and coal supplier terminal; based on the cloud data center, obtaining decrypted real-time electricity and coal supply data; legality verification is carried out, and distributed storage is carried out; the encrypted real-time electricity and coal demand information is uploaded based on a power plant terminal; based on the cloud data center, obtaining decrypted real-time electricity and coal demand information; retrieving real-time electricity and coal supply data after target decryption; and carrying out electricity-coal safe transaction, and returning a real-time transaction success signal to the corresponding power plant terminal and the electricity-coal supplier terminal. According to the invention, the problems of insufficient security and transparency, low transaction efficiency and high data management cost in the prior art are solved.

The invention belongs to the technical field of valves, and discloses a self-sealing anti-leakage valve which comprises a valve body and a connecting assembly. A buffer assembly; an adjusting assembly; a cleaning assembly and a cut-off assembly. According to the invention, by installing the cut-off assembly for auxiliary movement, when a piston block reaches a gap of a partition plate and continuously moves downwards, the piston block encounters the pressure of water flow in a right cavity to form a water hammer effect, and at the moment, three metal rods contact a groove ring and move downwards clockwise in a groove; the L-shaped rod can be pushed out under clockwise pushing of the cross plate and the oval groove, the shape of the L-shaped rod is a section conical surface, when the L-shaped rod continuously stretches out to be close to the bottom face of the partition plate, additional downward extension force can be provided for the piston block, the piston block can be assisted to be completely attached to and close a gap in the partition plate, and therefore the sealing effect is good. The problem that in the gradual closing process of an opening and closing piece of the valve, water flow can generate certain impact force on the opening and closing piece, and the water hammer phenomenon is generated to cause leakage is solved.

The invention relates to the technical field of novel energy materials, in particular to a photo-thermal driving shape memory type heat storage and temperature regulation phase change material and a preparation method and application thereof, and the photo-thermal driving shape memory type heat storage and temperature regulation phase change material comprises a polyurethane phase change material and a photo-thermal conversion material; the polyurethane phase change material is prepared from polyether type polyol, polyester type polyol, isocyanate and small molecule polyol; wherein the molar ratio of the polyether type polyol to the polyester type polyol is 1: (1 to 1000), and the molecular weight of the polyether type polyol is 10000 to 900000; the photothermal conversion material comprises one or more of carbon-based materials such as graphene, graphene oxide and a carbon nano tube. The phase change material has the advantages of high enthalpy value, high strength, photothermal conversion performance, good flexibility and reversible shape memorability, simple preparation method and low cost, and can be widely used in the fields of artificial muscle fibers, heat storage and temperature regulation intelligent textiles, heat management and the like.

A deep sea ball valve with an improved valve seat sealing system comprises a valve body, a valve rod, a valve element, a valve seat box and a valve seat matched with the valve element, the valve seat comprises a supporting ring, the supporting ring comprises a sealing face used for being matched with the valve element in a sealing mode, and the sealing face comprises an upper sealing angle and a lower sealing angle. The upper sealing angle is used for supporting the valve element and forms sealing with the valve element, the lower sealing angle is in clearance fit with the valve element when the valve is opened and is in interference fit with the valve element when the valve is closed, compared with one sealing, the upper sealing angle and the lower sealing angle are safer, spherical dirt is wiped away in the opening and closing process of the upper sealing angle, and the sealing effect is better. The lower sealing angle is protected, sealing is more durable, the sealing angle does not make contact with the valve element when the valve is in a normally-open state, the problem of material fatigue is avoided, and the problem of root leakage of an original sealing ring is solved through the integral design that the supporting ring and the sealing face are combined into one.

The invention relates to the field of grass mower equipment, in particular to a pure electric new energy hob type grass mower which comprises a frame, a driving system, a lithium battery power system, a control panel and a grass mowing system. The driving system is used for driving the frame to operate and driving the grass cutting system to cut grass; the lithium battery power system is used for prolonging the endurance time of equipment and providing stable power output; the control panel is used for controlling the grass mowing speed of the grass mower and the rotating speed of a cutter head of the grass mower by an operator; the grass mowing system is used for mowing a corresponding lawn; the lithium battery power system is composed of a lithium battery pack. The invention aims to provide the grass mower which is zero in emission, meets the modern environmental protection requirement and can meet the long-time lawn maintenance requirement.

The present invention relates to a growth device and a growth method of a silicon carbide single crystal by a liquid phase method, and belongs to the technical field of silicon carbide single crystal production. The growth device includes a growth crucible, a seed crystal rod fixed with a seed crystal, a laser rangefinder for determining the position of the growth raw material, a movable graphite block, a braking device, and a blocking graphite; a reserved hole is provided in the crucible cover of the growth crucible corresponding to the laser rangefinder directly below the light exit hole; at least four rows of holes are provided on the side wall of the growth crucible, and each row of holes is evenly spaced from top to bottom, and a hole is provided at the center of the bottom, and the movable graphite block is filled in the hole, and one end of the blocking graphite is embedded in the hole, and the other end is sleeved on the outer wall of the growth crucible; an opening is provided in the center of the blocking graphite for the braking device to pass through and connected to the movable graphite block, and the braking device is used to control the movable graphite block to move forward and backward relative to the growth raw material. The device of the present invention can realize the determination and adjustment of the high temperature line position before crystal growth, can weaken the self-circulating convection in the growth solution, and improve the utilization rate of carbon.

The utility model relates to the technical field of flanges, in particular to an aluminum flat plate flange with a reinforcing structure, which comprises a flat plate flange body, a plurality of bolt holes are arranged on the surface of the flat plate flange body, a reinforcing sleeve is sleeved on the outer side of the flat plate flange body, a sealing gasket is fixed on an inner ring opening of the reinforcing sleeve, and a reserved hole is arranged on the surface of the sealing gasket. A plastic plug piece is fixed to the surface of the reinforcing sleeve and inserted into the bolt hole. The aluminum flat plate flange with the reinforcing structure has the advantages that the reinforcing sleeve is arranged outside the flat plate flange body in a sleeved mode, the overall strength of the flat plate flange is effectively enhanced, the risk of deformation caused by external impact or collision is reduced, and the connection stability is improved.

The invention discloses a large-scale aluminum-plastic liquid cooling plate for a battery pack and a preparation method thereof.The large-scale aluminum-plastic liquid cooling plate for the battery pack comprises a plastic runner plate and an aluminum alloy thin plate, one surface of the plastic runner plate is provided with a first combination surface, and one surface of the aluminum alloy thin plate is provided with a second combination surface; a plurality of runners are arranged on the first combination face of the plastic runner plate at intervals through runner partition ribs, a liquid inlet is formed in one end of each runner in a converging mode, a liquid outlet is formed in the other end of each runner in a converging mode, and the runner partition ribs close to the liquid inlets are provided with drainage parts used for distributing inflow liquid. The plastic runner plate and the aluminum alloy thin plate are combined through the first combination face and the second combination face. The preparation method comprises the steps that the aluminum alloy thin plate and the plastic runner plate are prefabricated; the first combination surface of the plastic runner plate and the second combination surface of the aluminum alloy thin plate are combined to form an aluminum-plastic liquid cooling plate; anchoring is carried out on the other surface of the aluminum alloy thin plate along a runner partition rib self-tapping screw of the plastic runner plate; and testing the air tightness of the aluminum-plastic liquid cooling plate and the like.

The utility model relates to the technical field of gas-making furnaces, in particular to a gas-making furnace structure capable of preventing gas leakage. In order to solve the problem of gas leakage in the coal adding process of a gas making furnace, the novel gas making furnace structure capable of preventing gas leakage is provided and comprises a gas making furnace body, a nitrogen blow-down pipe and a nitrogen inlet pipe, the gas making furnace body comprises a stock bin, an articulated chute provided with a gate valve, a small distributing device, a large distributing device and a furnace body which are sequentially arranged in a communicated mode from top to bottom, the large distributor is provided with a nitrogen inlet and a nitrogen discharge port, the nitrogen blow-down pipe is hermetically communicated with the nitrogen inlet, the nitrogen inlet pipe is hermetically communicated with the nitrogen discharge port, the nitrogen blow-down pipe is provided with an emptying valve, and the nitrogen inlet pipe is provided with a nitrogen adding valve and a pressure gauge. According to the utility model, the gas in the furnace body is sealed through nitrogen, so that the problem of gas leakage is ingeniously solved under the condition that normal production operation is met.

The invention discloses a database access method and device for preventing user data leakage in a container, and the method comprises the steps: a business service sends a connection establishment request to a database service; a database side vehicle service hijack connection establishment request which has the same POD with the business service and is different from the business service in a container contai ner; the database side vehicle service analyzes a database protocol, modifies a user name and a password in the connection establishment request, and forwards the modified connection establishment request to the database service; the database service performs user name and password verification based on the modified connection establishment request, and returns a response after the verification is passed; and the database side vehicle service receives the response of the database service and forwards the response back to the business service, and the business service establishes database connection with the database service. According to the invention, the database side vehicle service is introduced between the business service and the database service, all database connection requests are intercepted, and the business service does not need to know the user name and password of the database when connecting the database, so that the leakage of certificates is avoided.

The invention relates to the technical field of flanges, in particular to a high-stability flange which comprises a first flange plate and a second flange plate, the first flange plate and the second flange plate are fixedly arranged at the ends of two pipelines in a sleeving mode respectively, bolt holes are formed in the surfaces of the first flange plate and the second flange plate, and a reinforcing buckle plate is connected to one side of the first flange plate in an inserted mode. A plurality of inserting blocks are fixed to the surface of the reinforcing buckle plate and inserted into the outer ring faces of the first flange plate and the second flange plate, and an inserting ring is fixed to the surface of the reinforcing buckle plate. The high-stability flange has the beneficial effects that through the design of the reinforcing buckle plates and the inserting blocks, pre-limiting between the flange plates is achieved, and the situation that the flange plates are dislocated or disengaged when not fixed through bolts is effectively avoided. And meanwhile, the rubber clamping strips on the surfaces of the inserting blocks further enhance the stability of connection, so that the flange plate can be tightly connected in a high-pressure, high-temperature or strong-vibration working environment.

The embodiment of the present invention discloses a method and system for monitoring and managing the entire process of hazardous solid waste based on the cloud, which relates to the field of chemical environmental protection technology, can solve the problem of difficult supervision of hazardous solid waste, and also take into account the anti-leakage requirements in national standards, and realize timely alarm while preventing leakage. The present invention includes: receiving a closing signal uploaded by a storage container, and obtaining the location information and status information of the storage container; if the storage container receives an unlocking signal of the storage container before reaching a preset area, an alarm is issued; after the storage container reaches the preset area, verification information is received, and when the verification information passes the verification, an unlocking key is sent, and the verification information includes the identification information of the hazardous waste disposal unit and the current status information of the storage container. The present invention is suitable for the transportation, storage and treatment of hazardous solid waste.

The invention is suitable for the technical field of water quantity monitoring, and provides a gear flowmeter and a using method thereof.The gear flowmeter comprises a gear flowmeter body which is arranged on a branch pipe of a pipeline and used for monitoring the flow of the branch pipe; the group of flanges are respectively arranged on the branch pipe and the gear flow meter body, and a plurality of nuts are fixedly arranged on the flanges on the branch pipe; the plurality of connecting bolts are arranged on one side of the gear flowmeter body and are used for connecting a plurality of nuts; the mounting mechanism is arranged on the gear flow meter body and is used for simultaneously driving a plurality of connecting bolts to be mounted on the plurality of nuts; and the protection mechanism is arranged on the gear flow meter body and is used for protecting the mounting mechanism. According to the gear flow meter and the using method thereof, the multiple bolts are driven to be installed and tightened at the same time, the operation steps are simplified, and therefore the installation efficiency is effectively improved.

The invention provides a soil in-situ automatic detection robot and a soil in-situ detection method. The soil in-situ automatic detection robot comprises a robot chassis as well as a soil ultrasonic-assisted drilling system, a soil in-situ detection system, a transverse moving part, a positioning navigation system and an industrial personal computer which are mounted on the robot chassis. The robot chassis is provided with two pairs of front and back differential wheels with independently distributed torques; the soil ultrasonic-assisted drilling system is provided with an ultrasonic-assisted drilling mechanical arm, and the rotating drilling mechanical arm overlaps ultrasonic mechanical vibration to conduct soil ultrasonic drilling operation on soil. The soil in-situ detection system is provided with a lifter, a soil in-situ detection mechanical arm, a laser-induced breakdown spectroscopy quantitative analysis system and a plurality of soil sensors; the soil ultrasonic auxiliary drilling system and the soil in-situ detection system are both installed on the sliding block. The positioning navigation system comprises a navigation positioning system and an obstacle avoidance system. According to the robot, the laser-induced breakdown spectroscopy system and multiple soil sensors are combined, and information acquisition of soil of different depths is achieved.

The invention discloses a thin stainless steel plate fin type heat dissipation core body machining method. The method comprises the steps of heat dissipation core body brazing structure design, heat dissipation core body part preparation, heat dissipation core body assembly, heat dissipation core body test welding, heat dissipation core body brazing parameter correction and formal brazing implementation, multiple heat dissipation core body connection and heat dissipation core body hot shape correction. According to the difference between the length or the width and the height of the heat dissipation core body, the thin stainless steel plate fin type heat dissipation core body can be divided into two, three and even more heat dissipation core bodies with the reduced height, so that the stability of the heat dissipation core bodies in the brazing process is guaranteed, and the heat dissipation core bodies are connected in series according to the weldability characteristic. Connection can be conducted in a fusion welding mode, a brazing mode and the like, the brazing parameters of the single heat dissipation core body are corrected when brazing is conducted, deformation is controlled in cooperation with a brazing clamp, and finally hot shape correction stress removal and brazing repair are conducted. The problems of brazing collapse, heat dissipation core deformation, low sealing qualification rate and the like in the machining process of the thin stainless steel plate fin type heat dissipation core are solved.

The present invention relates to a resource transmission method, terminal and storage medium. The method comprises: in response to a detected resource transmission trigger operation, obtaining a target signature certificate; wherein the target signature certificate is obtained by signing an initial certificate using a first public key of a resource sending device and a second private key of a server; sending the target signature certificate to a resource receiving device, so that the resource receiving device uses the second public key to verify the signature of the target signature certificate when the second public key of the server exists; if the first verification result of the signature verification performed by the resource receiving device is verification passed, the target resource is transmitted to the resource receiving device. The target resource is transmitted only after the resource receiving device is authenticated, avoiding the target resource from being transmitted to a device that does not have the resource receiving qualification, thereby improving the protection of resources and the security of resource transmission.

The present invention discloses a plate-mounted proportional directional valve, comprising a valve body, a locking disk, a hook and a fixing pin; the hook is provided on one connecting surface of the valve body, and the fixing pin is provided on the other opposite connecting surface; the hook is rotatably connected to the valve body, the locking disk is rotatably arranged on the valve body, and an opening is provided on the locking disk; the locking disk can be rotated relative to the valve body until the opening is aligned with the hook and the fixing pin, so that the hook on the valve body can be rotated to form a connection or disconnection with the fixing pin on the adjacent valve body; the locking disk can be rotated until the opening is misaligned with the hook and the fixing pin to limit the rotation of the hook relative to the valve body. The plate-mounted proportional directional valve can realize convenient and quick assembly and disassembly operations.

The invention discloses a leakproof composite phase change material and application of the leakproof composite phase change material in wide temperature range operation of a lithium battery, and belongs to the technical field of battery thermal management. Boron nitride nanosheet modified ceramic fibers are used as an internal supporting framework to enhance thermal conductivity and provide capillary constraint, and a core material is a phase change medium such as paraffin or n-octadecane; the invention further discloses a preparation method of the composite material and application of the composite material in lithium battery thermal management, the composite material solves the problems that a traditional phase change material is prone to leakage, poor in heat conduction and single in function, the battery can be rapidly heated at low temperature, heat can be efficiently absorbed and diffused at high temperature / normal temperature and high rate, and the service life of the battery is prolonged. The safe, efficient and stable operation of the lithium battery in a wide temperature range is realized, the leak-proof performance is high, the cycling stability is good, the preparation cost is controllable, and the application prospect is wide.