15results about How to "Improve mechanical efficiency" patented technology

This utility model relates to a hydraulic shaft thrust bearing, which includes: a thrust cylinder sleeve, a thrust cylinder core, a hydraulic chamber, an annular groove reservoir, a hydraulic pump, a liquid medium, etc. This utility model patent applies liquid pressure technology to the axial bearing, avoiding the hard contact between the thrust plate and the balls or rollers in ordinary thrust bearings, greatly reducing the motion resistance around the shaft and improving the mechanical efficiency of the rotational motion around the shaft.

The application discloses a polymer electrolyte with three-dimensional network fillers and a preparation method thereof, and belongs to the technical field of lithium ion batteries. The application is based on a synergistic design concept of premixed filler guiding in-situ network growth, and hydrolysis of tetraethyl orthosilicate (TEOS) is regulated by formic acid. The premixed nano-SiO2 particles are used as nucleation sites to induce directional growth of SiO2 generated in-situ on the surface of the nano-SiO2 particles and mutual crosslinking, and the fillers form a three-dimensional crosslinked network structure in the polymer matrix. The application overcomes problems of easy agglomeration of fillers, incomplete crystallization inhibition and incomplete crosslinking of a single in-situ growth network due to lack of nucleation sites in a traditional physical blending method, and realizes synergistic enhancement of mechanical strength and ion transmission efficiency.

The utility model discloses a high leakproofness die structure for aluminum alloy semi-solid die casting, which comprises a fixed die and a feeding assembly, the middle of the bottom of the right side of the fixed die is provided with the feeding assembly, the edge of the right side of the fixed die is fixedly connected with a first fixed block, and the middle of the right side of the first fixed block is provided with a groove. A first fixing block, a sliding block, a connecting rod and a spray head are arranged, the first fixing block is installed on the right side of a fixed mold, the sliding block is inserted into the middle of the first fixing block, the connecting rod is arranged on the outer side of the sliding block, and the spray head is arranged at the other end of the connecting rod and faces the inner side of the left side face of the fixed mold. In the reciprocating motion that the movable die moves close to and away from the fixed die, lubricating oil is evenly smeared on the piston rod, the friction resistance of moving of the movable die is reduced, the mechanical efficiency is improved, the sealing performance of the piston rod is enhanced, and oxidation and other corrosion are prevented.

The utility model discloses a marine propeller gearbox, which belongs to the technical field of marine propellers, and comprises a main box shell, a shaft pipe sleeve is fixedly mounted at the bottom end of the main box shell, a lower box shell is fixedly mounted at the bottom end of the shaft pipe sleeve, a clutch mechanism is arranged in the main box shell, and the lower box shell is fixedly mounted at the bottom end of the shaft pipe sleeve. A gear shifting mechanism is arranged in the main box shell, and a transmission mechanism is arranged in the shaft pipe sleeve and the lower box shell. The clutch mechanism and the gear shifting mechanism are arranged, the wet-type multi-plate clutch is adopted as a core component of the clutch mechanism, the clutch is composed of a plurality of metal friction plates and a pressing device, the metal friction plates are arranged alternately, the friction plates are soaked in lubricating oil, and the lubricating oil not only plays a cooling role, but also can provide a more stable friction coefficient. According to the utility model, the gear shifting mechanism and the transmission mechanism are arranged, and the horizontal shaft design is used, so that the use cost is reduced.

The embodiment of the application discloses an underwater power generation device, which comprises a support, an impeller, a plurality of first magnetic members, a gear ring and a plurality of second magnetic members. The support has a mounting port. The impeller is arranged in the mounting port, and the impeller has a gap with the support. The plurality of first magnetic members are uniformly and spacedly arranged on the side of the impeller facing the support, and the magnetic properties of adjacent first magnetic members are opposite. The gear ring is sleeved on the outer side of the support, and the gear ring has a gap with the support. The plurality of second magnetic members are uniformly and spacedly arranged on the side of the gear ring facing the support, and the magnetic properties of adjacent second magnetic members are opposite. When the impeller is impacted by water flow, the impeller rotates relative to the support, the gear ring rotates through the interaction of the first magnetic members and the second magnetic members, the impeller and the gear ring are designed through magnetic suspension, the underwater power generation device can be started at low speed, the energy loss in the transmission process can be greatly reduced, and the mechanical efficiency is improved.

The invention discloses a hydrogen energy and natural energy heat pump heat supply and refrigeration integrated system and method, and relates to the technical field of hydrogen energy and natural energy heat pump heat supply and refrigeration integration. The heat pump heating module comprises the following steps that S1, carbon dioxide in air is absorbed through a refrigerant or the refrigerant and released into water; the carbon dioxide heat pump is used, and carbon dioxide is a clean refrigerant, has no destructive influence on the environment, is stable in chemical property, non-combustible, not easy to decompose at high temperature, does not generate harmful gas, is non-toxic, reduces threats to people due to leakage, is good in fluidity and has a relatively high evaporation latent heat value; compared with conventional refrigerants, the compression ratio of carbon dioxide is much smaller than that of common refrigerants, high performance coefficient and mechanical efficiency can be achieved, the high condensing temperature enables the exhaust temperature of a compressor to be high, and water at the high temperature can be obtained.

The utility model discloses a compact and precise guide cylinder, which comprises a guide block, a cylinder fixed on the guide block, and guide rods arranged on two sides of the guide block, the guide block is arranged between the two guide rods, a fastener is arranged at the position of the guide block deviating from the cylinder, the fastener is fixedly connected with the guide block through a first nut, and the first nut is connected with the guide block through a second nut. The fastener is in threaded connection with a piston rod of the air cylinder, a sinking groove with an opening is formed in one side of the guide block, and the piston rod of the air cylinder penetrates through the sinking groove. Through the arrangement of the sinking groove with the opening, a maintainer can make contact with and act on the nut rapidly and conveniently through a tool, so that disassembly operation is efficiently executed, the air cylinder replacement speed is effectively increased, and the equipment shutdown time is shortened; when the guide rod ascends and descends, the lubricating assembly synchronously moves along with the guide rod, so that lubricating oil stored in the lubricating assembly is evenly smeared to the surface of the guide rod, the friction resistance between the guide rod and the guide block is reduced, and the service life of parts is prolonged.

The application discloses a magnetic suspension micro gas turbine power station and a control method thereof, and belongs to the technical field of micro gas turbine power generation. The magnetic suspension micro gas turbine power station comprises a micro gas turbine, a magnetic suspension motor and an electronic control system. The micro gas turbine is one of a type without a regenerator, a type with a built-in regenerator or a type with an external regenerator. The air inlet of the centrifugal compressor of the micro gas turbine is arranged in the magnetic suspension motor, and the motor stator is fixed in the air inlet. The centrifugal compressor and the radial turbine are back-to-back arranged on the rotating shaft, the radial turbine is fixed on the cantilever end of the rotating shaft and located outside the two radial magnetic bearings to form cantilever support, and the centrifugal compressor, the radial turbine, the motor rotor and the magnetic bearing rotor adopt a coaxial mounting structure. The application also adopts a double cooling gas path and a three-ring nested control strategy, and realizes high integration, oil-free, efficient cooling and precise dynamic control of the power station.

An electronic oil pump external rotor suspension device includes an external rotor rotation support assembly, which comprises an external rotor and the rotation support assembly; the external rotor and the rotation support assembly are an integral structure or a separate structure; the external rotor is embedded and fixed on the inner surface of the rotation support assembly; the outer surface of the rotation support assembly is disposed inside the oil pump; the electronic oil pump includes a pump cover, a drive shaft, a pump body, a motor, a control unit, and a bottom cover; it is provided with a double-end face oil inlet and double-end face oil outlet structure; the connection between the pump cover drive shaft and the inner rotor is a press-fit drive, a flat drive, or a spline drive.

This invention provides a double-sided asymmetrical rotor profile for a high-pressure twin-screw compressor, comprising a male screw rotor and a female screw rotor. The profiles of the male and female rotor teeth mesh with each other and have the same outer diameter. The tooth profiles of the female rotor teeth sequentially include: female I circular arc, female II circular arc, female III circular arc, female I elliptical arc, female circular arc envelope, female IV circular arc, female II elliptical arc, female straight line, and female V circular arc. The tooth profiles of the male rotor teeth sequentially include: male I circular arc, male I circular arc envelope, male II circular arc envelope, male I elliptical arc envelope, male II circular arc, male III circular arc, male II elliptical arc envelope, male straight line envelope, and male III circular arc envelope. This invention's tooth profile is easy to grind, achieving higher surface accuracy. It features a short contact line, wide sealing surface, small leakage triangle, and small pressure difference between working chambers, improving sealing performance, reducing noise and vibration of the main unit, and increasing the lifespan and long-term operational reliability of the main unit bearings.

The application discloses a kind of solid insulation combined electric appliance switches of direct-acting, it is related to the field of medium and high voltage power distribution switchgear, to solve the problem that existing SF6 switchgear cannot consider environmental protection, miniaturization and reliability.The switch includes mechanism box and the first insulating cylinder and the second insulating cylinder sealedly installed in the lower side thereof, the first insulating cylinder is integrated with the direct-acting disconnecting switch, the first grounding switch and the circuit breaker, the second insulating cylinder is integrated with the second grounding switch and the fuse, and the vertical direct-acting opening and closing of the corresponding switch is driven by three groups of operating mechanisms respectively, and the grounding operating mechanism can synchronously control the first grounding switch and the second grounding switch.The application completely abandons the use of sulfur hexafluoride gas, adopts direct-acting structure and solid insulation integrated design, realizes switch miniaturization, high reliability and maintenance-free, greatly improves insulation performance and environmental adaptability, and meets environmental protection requirements.

This invention provides a compressor and a refrigeration device, aiming to at least solve the problem of poor noise reduction and high exhaust resistance caused by the unreasonable matching of the valve plate cover and the exhaust port size of the muffler. The compressor includes a bearing assembly and a muffler. The bearing is provided with an exhaust port; a first valve plate is disposed on the bearing, and a first cover of the first valve plate is used to cover the exhaust port; a second valve plate is connected to the first valve plate, and a gap exists between the second cover of the second valve plate and the first cover; the muffler is connected to the bearing, and the muffler is provided with at least one exhaust port; wherein, the diameter of the first cover is D1, the diameter of the second cover is D2, the total area of ​​the exhaust port is S, and D1, D2, and S satisfy the following relationship: 1.5≤0.5×(D1+D2) / ≤5.0, where π is the square root and π is the mathematical constant pi. The compressor provided by this invention can avoid the increase in compressor power consumption caused by excessive back pressure and ensure the noise reduction effect.

The utility model relates to the technical field of bearings, in particular to an axial-radial large-load ball bearing which comprises an outer ring, an outer check ring, a retainer and an inner ring, an outer raceway is arranged on the inner circumferential surface of the outer ring; the outer check ring is operably associated with the outer ring; the retainer is provided with at least ten rows of pocket hole groups, pocket holes of each row of pocket hole groups are distributed in an annular array around the axis of the retainer, and a steel ball is arranged in each pocket hole; the low-speed heavy-load ball bearing is suitable for low-speed heavy loads, the axial bearing capacity of the ball bearing is improved, the requirement for bearing movement is met during radial rotation, and when the inner ring and the outer ring are aligned, the contact point of the steel ball on the outermost side and the inner ring can move to the linear ending position of the inner ring on the side corresponding to the contact point of the steel ball on the outermost side.

The utility model discloses electric steamer, including the base of being equipped with water tank and the juice receiving disc of being placed on the base, be equipped with the water storage cavity and steam generation cavity of independent setting in the water tank, be equipped with the water replenishment channel of limiting water by the water storage cavity flow to steam generation cavity between the water storage cavity and steam generation cavity, and the water storage cavity top is open and forms the water inlet, and the water replenishment channel has the water outlet with steam generation cavity intercommunication and higher than steam generation cavity bottom surface, and the base still includes the water control switch for controlling the opening and closing of water replenishment channel, and the water control switch is used for closing water replenishment channel when the juice receiving disc is separated from the base, and the juice receiving disc is sealed with the base cooperation to water inlet, and the water control switch is used for opening water replenishment channel when water inlet is sealed. The utility model discloses electric steamer, and the user is convenient to the water storage cavity and adds water, and the water is simple and convenient to add, in addition, can also realize the automatic replenishment of a certain water amount to steam generation cavity, to realize the effect of fast steam, prevent dry burning.

The utility model provides a sealing structure and a compressor with the same, the sealing structure comprises a rotor and a static part sleeved on the radial outer side of the rotor, a sealing unit is formed between the rotor and the static part, the sealing unit comprises a wedge-shaped dynamic pressure sealing part and a fluid diffusion sealing part, the through-flow area of an inlet of a wedge-shaped flow channel of the wedge-shaped dynamic pressure sealing part is larger than that of an outlet of the wedge-shaped flow channel, an inlet of a diffusion ring cavity of the fluid diffusion sealing part communicates with the outlet of the wedge-shaped flow channel, and the outlet and the inlet of the diffusion ring cavity are arranged in a staggered mode on the axial projection of the rotor. An inlet of the wedge-shaped flow channel is communicated with the high-pressure area, and an outlet of the diffusion ring cavity is communicated with the low-pressure area. Hard contact abrasion of the rotor and the static part is avoided, the service life of the sealing structure is prolonged, energy of pressure fluid is further weakened by the turbulence effect generated by the fluid diffusion sealing part, and the purpose of preventing gas leakage is achieved.