20 results about "Oil free" patented technology

To provide an oil free type scroll compressor which improves adhesion between a fixed scroll and a revolving scroll to prevent leak from a small gap.SOLUTION: An oil free type scroll compressor 1 of the invention includes: a fixed scroll 20 in which a fixed lap 22 is erected; a revolving scroll 30 in which a revolving lap 30 is erected; a housing 12; a main crank 40 which eccentrically rotates the revolving scroll 30; and an auxiliary crank 50 which prevents autorotation of the revolving scroll 30. A compression spring 60 is disposed between a rotary shaft bearing 52 and an auxiliary crank pin bearing 54 of the auxiliary crank 50.SELECTED DRAWING: Figure 1

The invention discloses portable pipe supply diving gas supply equipment, which belongs to the technical field of diving equipment, and comprises a power control unit, a gas compression unit and a gas treatment unit, the power control unit is used for converting an input power supply into controlled driving electric power, and the power control unit, the gas compression unit and the gas treatment unit are used for buffering, purifying and adjusting the pressure of compressed gas. Outputting to the diver; the pressure detection unit is in communication connection with the controller, the controller is configured to adjust the output of the frequency converter according to a pressure signal so as to control the rotating speed of the driving motor to maintain constant air supply pressure, and the driving motor is connected with the air compression unit through a transmission shaft. According to the portable pipe supply diving air supply equipment, the vortex pump is adopted as the air pump, compared with a piston pump, noise is reduced, efficiency is improved, compared with a stud pump, oil is not contained, cleanliness is high, air volume output is dynamically adjusted according to the breathing air volume requirement of a diver at the downstream output end, and safe and energy-saving constant-pressure breathing air output is achieved.

The invention relates to a method and a system for storing and releasing energy through formation fractures. The method comprises the following steps: identifying at least one oil-gas-free energy storage formation; hydraulic fracturing construction is conducted on the energy storage stratum, so that at least one stratum fracture is generated in the energy storage stratum; the injection equipment is driven by electric energy to inject high-pressure fluid into the at least one stratum fracture, so that the width of the at least one stratum fracture is increased, and the electric energy is converted into stratum rock elastic deformation energy to be stored; high-pressure fluid in at least one stratum fracture is reversely discharged to the ground to drive an impeller of power generation equipment to rotate for power generation due to the closing process of the stratum fracture, and therefore rock elastic deformation energy stored in the stratum is converted into electric energy again. The energy storage method is low in investment and maintenance cost, can adapt to different earth terrains, and is wide in application range.

The utility model provides a marine engine room dirty oil water pipeline system which comprises a dirty oil water tank, a dirty oil hand pump, an engine room dirty oil water floor drain, a dirty oil water bank connector and a dirty oil water pumping branch pipe, the dirty oil water tank is installed in an engine room and connected with a dirty oil water inlet pipe, the dirty oil water inlet pipe is connected with the dirty oil hand pump, and the dirty oil water pumping branch pipe is connected with the dirty oil hand pump. One side of the lower part of the dirty oil water tank is connected with the dirty oil water shore connector; an inlet of the dirty oil hand pump is connected with a branch pipe tee joint, one inlet of the branch pipe tee joint is connected with a cabin dirty oil water floor drain through a dirty oil water pumping branch pipe, the other inlet of the branch pipe tee joint is connected with an inlet connecting pipe, and the inlet connecting pipe is connected with a deck dirty oil water floor drain. After the scheme is adopted, the structure is reasonable, the use effect is good, clean water without oil can be discharged in advance, and excessive oily water in the tank is prevented.

The invention belongs to the technical field of auxiliary equipment for UV gloss oil coating machines, and particularly relates to a UV gloss oil uncovering-free oil taking device for a coating machine. The oil drum opening device comprises a support, a feeding mechanism and a drum opening mechanism, the feeding mechanism and the drum opening mechanism are arranged at the top and the bottom of an oil supply position of the support respectively, the feeding mechanism moves an oil drum to the oil supply position, the drum opening mechanism comprises a drum breaking mechanism, an oil suction mechanism and a grabbing mechanism, and the grabbing mechanism grabs the upper edge of the oil drum at the oil supply position. The barrel opening mechanism comprises a barrel breaking cutter, a mounting plate and a lifting air cylinder, the barrel breaking cutter is fixedly connected to the middle of the mounting plate, the barrel breaking cutter is cylindrical, a wedge-shaped cutting edge is arranged at the bottom end of the barrel breaking cutter, and the oil inlet end of the oil suction mechanism penetrates through the middle of the barrel breaking cutter; the movable end of the lifting air cylinder is connected with the top of the mounting plate, and the fixed end of the lifting air cylinder is connected with the support. The convenience of taking oil from the packaging barrel can be effectively improved, and waste is reduced.

The utility model relates to the technical field of urban rainwater treatment, in particular to an initial rainwater discarding system which comprises a pool body, an oil baffle plate, a first control valve, a liquid level meter and a controller, the oil baffle plate, the first control valve, the liquid level meter and the controller are arranged in the pool body, one side of the pool body is connected with a water inlet pipe, and the other side of the pool body is provided with a water outlet; the oil baffle plate is vertically or obliquely arranged in the tank body, a tank cavity of the tank body is divided into a first cavity body and a second cavity body by the oil baffle plate, and a water guide channel is arranged between the lower end of the oil baffle plate and the tank bottom of the tank body; when the rainwater flowing into the first cavity reaches the set liquid level of the liquid level meter, the first control valve is closed, and the initial rainwater can be quantitatively intercepted; the oil baffle plate can prevent oil floating on the upper portion of the first cavity from flowing into the second cavity. Moreover, the lower part of the rainwater in the first cavity does not contain oil, and the part of the rainwater which does not contain oil can flow into the second cavity from the first cavity through the water guide channel, so that the rainwater which does not contain oil in the pool body can smoothly flow into the water outlet.

The centrifugal fan comprises a volute and an impeller, the volute is provided with an outer ring wall and an inner ring wall, an air interlayer is formed between the outer ring wall and the inner ring wall, the closed end of the outer ring wall is connected with the inner ring wall in a closed mode, and an air interlayer air inlet is formed between the open end of the outer ring wall and the inner ring wall. A ventilation opening is formed in the inner ring wall and forms an air interlayer air outlet, the air interlayer is communicated with an air channel in the volute through the ventilation opening, and a cooling fan air outlet is communicated with an air interlayer air inlet. According to the refrigeration type range hood, the air outlet of the heat dissipation fan is communicated with the air inlet of the air interlayer, air of the heat dissipation fan does not contain oil fume, and the air of the heat dissipation fan passes through most of the inner ring wall of the oil fume suction fan, so that the air of the oil fume suction fan does not pass through the inner side of the inner ring wall and the inner side of the outer ring wall of the oil fume suction fan; the inner sides of the inner ring wall and the outer ring wall cannot be polluted by oil smoke, so that the problem that the oil smoke attached to the inner surface of the volute is difficult to clean is solved.

The invention discloses a hydrogen filling system with greasy dirt invasion detection and control functions. The system comprises a hydrogenation pipeline, and a greasy dirt invasion detection control assembly and a hydrogenation assembly which are arranged on the hydrogenation pipeline, the greasy dirt invasion detection control assembly is arranged at the front end of the hydrogenation pipeline and is used for detecting and removing greasy dirt contained in hydrogen input by the hydrogenation pipeline; and the hydrogenation assembly is arranged at the rear end of the hydrogenation pipeline and is used for injecting hydrogen without oil dirt into the hydrogen using equipment. According to the method disclosed by the invention, oil contamination invasion prevention control can be carried out on hydrogen entering a hydrogen filling system, so that the problems that the fuel cell is not pure in a hydrogen source filled at the front end, so that the galvanic pile performance and the service life are greatly reduced, and meanwhile, a large amount of manpower, material resources and financial resources are consumed when oil contamination in a hydrogen filling machine and a hydrogen energy automobile is cleaned are solved.

This utility model discloses an atomizing device and atomizing equipment with air exchange and no oil leakage. The atomizing device with air exchange and no oil leakage includes: a chamber body with an open lower end; a mounting component installed at the lower end of the chamber body to enclose and form an oil storage chamber, the mounting component forming a mounting chamber and an oil inlet channel connecting the mounting chamber and the oil storage chamber; a ceramic atomizing core installed in the mounting chamber, the upper side of the ceramic atomizing core communicating with the oil inlet channel, and the lower side enclosing the mounting component to form an atomizing chamber; wherein, the side wall of the oil inlet channel is provided with an air exchange port, the width of the air exchange port being 0.1-0.3 mm and the cross-sectional area being 0.01-0.09 mm². 2 The mounting components and the inner wall of the chamber form a ventilation channel with at least one bend. Both ends of the ventilation channel connect to the ventilation port and the atomizing chamber, respectively. This technical solution allows the gas in the atomizing chamber to replenish the upper side of the ceramic atomizing core, achieving pressure balance between the upper and lower sides of the ceramic atomizing core. This ensures that the oil can continue to enter the ceramic atomizing core normally, preventing clogging.

The invention relates to the field of nuclear power plants, and discloses a nuclear power plant wastewater collection system and method, which can optimize the design of the nuclear power plant wastewater collection system and reduce the configuration and arrangement space of system equipment so as to save project investment and project cost. The system comprises a conventional island waste liquid collecting system and a waste oil and non-radioactive water discharging system. The conventional island waste liquid collecting system comprises a single first water collecting pit, the first water collecting pit is configured to contain radioactive oil-free waste water, and the rear end of the water collecting pit is connected to the conventional island liquid effluent discharging system through a pipeline. The conventional island liquid effluent discharge system is configured to perform radioactive substance attenuation treatment on radioactive oil-free wastewater. The waste oil and non-radioactive water discharging system comprises a single second water collecting pit, the front end of the second water collecting pit is connected to a plurality of water feeding pump sets, a sealing oil system and a lubricating oil storage room through pipelines, the second water collecting pit is configured to contain non-radioactive oily wastewater, and the rear end of the second water collecting pit is connected to a nuclear island dirty oil treatment system through a pipeline; and the nuclear island sump oil treatment system is configured to treat oily wastewater without radioactivity.

The present application belongs to the field of oil-free scroll compressor, and particularly relates to an electromagnetic controllable anti-self-rotation mechanism of an oil-free scroll compressor. The present application comprises a bracket in the shape of a groove, characterized in that: a movable scroll is arranged above the bracket, and a bearing blind hole is arranged on the bottom surface of the movable scroll; a bracket hole is arranged on the bracket at a position corresponding to the bearing blind hole in the middle, a plurality of electromagnet seats are arranged around the bracket hole, and a plurality of eddy current sensor seats are also arranged around the bracket hole; one electromagnet body is arranged on each electromagnet seat; one eddy current sensor body is arranged on each eddy current sensor seat; a groove is arranged below the movable scroll, and an armature is fixed in the groove; the electromagnet body, the eddy current sensor body and the armature are arranged in position cooperation. The present application can output clean high-pressure gas without oil.

The application discloses an oil circuit structure of an oil-cooled motor rotor, which comprises a shell, a bushing, a rotor core, a first balance plate, a second balance plate, a stator assembly and a rotor shaft. The rotor core, the bushing, the first balance plate and the second balance plate are all sleeved on the rotor shaft, the stator assembly is sleeved on the outer side of the rotor core, the end, away from the rotor shaft, of the bushing is abutted against the shell, the bushing is internally provided with an annular oil distribution groove and a radial oil hole, a plurality of bent oil channels are arranged on the rotor shaft and are in communication with the annular oil distribution groove and the radial oil hole, a plurality of axial oil channels are arranged in the rotor core and are in communication with axial oil outlet holes, and the first balance plate is further provided with an inclined oil outlet hole in communication with the axial oil channels. The oil circuit structure makes the cooling oil free from the dependence on centrifugal force, realizes efficient cooling of the rotor core under all working conditions, is convenient to produce and process, and solves the difficulty of the limitation of the arrangement of the oil inlet on the shaft end in some structures by adopting the radial oil inlet mode of the non-end part.

The invention provides a simulated formation condition tight oil production efficiency nuclear magnetic detection and quantitative characterization method, and belongs to the technical field of oil exploration and development, the method comprises the following steps: S1, respectively measuring nuclear magnetic resonance T2 spectrums of a core sample in a dry state, a water-containing and oil-free state and an oil-containing state; obtaining the oil saturation of the core sample by contrasting the change characteristics of the nuclear magnetic T2 spectrums and the change of the semaphore; and S2, respectively measuring the permeability and porosity of the core sample in a dry state, establishing a quantitative characterization model of the fluid utilization efficiency, and calculating the fluid utilization efficiency. According to the method, the calculation problem of the tight oil production efficiency under the influence of multiple factors is solved by researching the influence of pore pressure, oil saturation and reservoir physical properties on the tight oil production efficiency.

This invention relates to the field of water conservancy engineering technology, specifically to a drainage system and method for a hydropower station. The drainage system includes a drainage pool, an upper partition, a lower partition, a lifting mechanism, a mounting frame, a rotating mechanism, multiple oil suction mechanisms, and an oil squeezing mechanism. The drainage pool is divided into a first chamber, a second chamber, and a third chamber by the upper and lower partitions. Clean water is injected into the first chamber until the liquid levels in the first and second chambers are level with the top of the lower partition. Oily wastewater is continuously injected into the first chamber, where floating oil is trapped, and oil-free water is discharged normally from the third chamber. After a period of time, the lifting mechanism moves multiple oil suction mechanisms down to the water surface to absorb oil, and then the rotating mechanism moves the multiple oil suction mechanisms to the upper oil squeezing mechanism to squeeze out the oil absorbed by the multiple oil suction mechanisms and collect it for discharge. This allows for the treatment of oily wastewater, separation of oil, and prevention of pollution to the downstream water environment.

The application relates to the technical field of petroleum engineering, and discloses an oil-free drag-reducing agent and application thereof, the oil-free drag-reducing agent comprising: ionic polyacrylamide, a polyether polyol compound, a suspending agent and an optional stabilizer; the weight ratio of the ionic polyacrylamide to the polyether polyol compound is 1:0.5-10; the weight average molecular weight of the ionic polyacrylamide is 5 million-30 million, and the average polymerization degree of the polyether polyol compound is less than or equal to 1000.The oil-free drag-reducing agent has excellent stability and will not settle for at least 9 months; the oil-free drag-reducing agent has good solubility, high solid content, good fluidity, can resist high salinity, and enriches the use scenarios of the oil-free drag-reducing agent; the oil-free drag-reducing agent does not contain an oil phase, is harmless to the formation environment, and simultaneously reduces the cost.

The application discloses a method and system for measuring the oil quantity of an irregular fuel tank of a ship, and belongs to the technical field of ship fuel management. The ship comprises a fuel main pipe, a ballast pipe, a seawater pump, a fuel injection pipe and a fuel tank. The method comprises the following steps: emptying the fuel in the fuel main pipe; starting the seawater pump to inject water into the fuel main pipe, and the water flows into an external storage tank through the fuel main pipe, the fuel tank and the ballast pipe in sequence, and the injection of water is stopped until the water in the external storage tank contains no oil; adding fuel into the fuel tank through the fuel injection pipe, and the fuel pushes the water in the tank to flow into the external storage tank through the ballast pipe, and the addition of fuel is stopped until the liquid flowing into the external storage tank through the ballast pipe becomes an oil-water mixture, and the reading of a flowmeter at this time is recorded; and the oil quantity is determined based on the reading of the flowmeter and the difference between the volume of the fuel main pipe and the ballast pipe. The method and system provided by the application can improve the measurement accuracy and reduce waste.

The utility model belongs to the technical field of cable production, and particularly discloses an outdoor lubricating oil cooling pond for cable production, which comprises a cooling pond, a vertical overflow plate is arranged in the cooling pond and divides the cooling pond into a settlement area and a heat exchange area, the bottom of the settlement area is fixedly connected with an inclined block, one side of the bottom of the settlement area is provided with a drain outlet, and the drain outlet is communicated with the heat exchange area. A heat exchange pipe set is arranged in the heat exchange area, a turbine is arranged on the lower side of the interior of the heat exchange area, a first motor is fixedly connected to the lower side of the exterior of the heat exchange area, the output end of the first motor penetrates and extends into the heat exchange area and is fixedly connected with a rotating shaft of the turbine, and a lubricating oil outlet is fixedly connected to the lower side of the heat exchange area. And the hot oil inlet, the waste oil discharge outlet and the lubricating oil outlet are respectively provided with a valve. The overflow plate is arranged, hot oil without aluminum powder on the upper layer flows into the heat exchange area from the position above the overflow plate, separation of the aluminum powder in lubricating oil is achieved, and the situation that the aluminum powder enters a lubricating oil conveying pipeline again and deposits to block the pipeline is prevented.

A centrifugal fan and a refrigeration type range hood provided with the centrifugal fan, the centrifugal fan comprising a volute and an impeller, the volute having an outer ring wall and an inner ring wall, an air interlayer being formed between the outer ring wall and the inner ring wall, the outer ring wall being closedly connected with the inner ring wall, an air interlayer air inlet being formed between the outer ring wall open end and the inner ring wall, a ventilation opening being formed in the inner ring wall, the ventilation opening forming an air interlayer air outlet, the air interlayer being communicated with an internal air duct of the volute through the ventilation opening, and the heat dissipation fan air outlet being communicated with the air interlayer air inlet. The heat dissipation fan air outlet of the refrigeration type range hood is communicated with the air interlayer air inlet, and the air of the heat dissipation fan does not contain oil fume, so that the air outlet of the heat dissipation fan passes through most of the inner ring wall of the oil fume suction fan, and the air of the oil fume suction fan does not pass through the inner side of the inner ring wall and the outer ring wall of the oil fume suction fan, so that the inner side of the inner ring wall and the outer ring wall is not polluted by oil fume, thereby solving the problem that oil fume adhered to the inner surface of the volute is difficult to clean.