32results about How to "Realize oil supply" patented technology

The invention discloses a direct current motor EGR valve controller which comprises a master chip module, a power module, a direct current motor EGR valve control module, a sensor input signal processing module, a communication module, a preheating control module and an auxiliary control module. Signals obtained by the sensor input signal processing module are logically processed through the master chip module, corresponding signals are output to control the control modules to work normally and logically, so that the opening degree of a direct current motor EGR valve is accurately controlled, and the direct current motor EGR valve is made to work or tested.

The invention discloses a thin-wall high-precision static-pressure rotation workbench. A motor is arranged in a static-pressure radial and thrust joint bearing inner hole, the high thrust rigidity of the rotation workbench is obtained and meanwhile the thickness of the rotation workbench is greatly reduced. A common oil supply track and a common oil returning track are arranged to carry out oil supplying and oil returning on radial bearings and thrust bearings at the same time, and the oil way structure is simplified. A thrust oil cavity structure and a radial oil cavity structure are distributed on a bearing bush in a centralized manner, and centrality of the integral structure is improved. The static-pressure rotation workbench has the beneficial effects of being small in thickness, good in thrust rigidity and compact in structure.

The invention relates to an oil supply device provided with an oil pressing device. The oil supply device comprises a tank which is provided with an oil inlet and an oil outlet. An installing hole is formed in one side of the tank. A sealing cover is fixedly combined with the upper end face of the tank. The oil supply device further comprises the oil pressing device and oil absorbing cotton. The oil pressing device is provided with a pressing plate, a threaded rod and a rotary knob. The pressing plate is installed at the lower end of the threaded rod. The rotary knob is fixedly combined with the upper end of the threaded rod. The threaded rod is connected with the sealing cover through threads. The oil absorbing cotton is placed in the tank. The oil pressing device can extrude lubricating oil absorbed by the oil absorbing cotton out, the utilization rate of the lubricating oil is effectively increased, an operator can assemble and disassemble the oil supply device conveniently, and the oil supply device is simple in structure, economical and practical.

The invention discloses an automatic exhaust device for a transformer gas relay, and relates to the field of transformer maintenance auxiliary equipment. After gas appears inside the gas relay and anirregularly-shaped air bag is filled with gas, the irregularly-shaped air bag is expanded, a first sliding block is pushed to move downwards through the repulsive force of a magnet and a magnet blockwith same polarity, and then a second sliding block is pushed to move outwards through the wedge-shaped cooperation of the contact end face of the first sliding block and the second sliding block, sothat a broken exhaust pipeline and an oil supply pipeline are opened, automatic exhaust and oil supply are realized, and then the normal positions of the first sliding block and the second sliding block are recovered to close the exhaust pipeline and the oil supply pipeline by using the combined action of the reduction of the repulsive force of the shrunk magnet and the magnet block of the irregularly-shaped air bag in the gradual gas exhaust process. The device solves the problems that an existing gas relay exhaust device is easy to misdetect whether a fault appears in a transformer and oil cannot be supplied automatically, and is mainly used for automatically exhausting gas and supplementing transformer oil consumed inside the gas relay.

The invention relates to a rotary multi-way valve with pressure maintaining and shock preventing functions, and belongs to the technical field of fluid reversing valves. The technical problems that for an existing valve, a pressure maintaining function can not be achieved, operation is tedious, and misoperation is liable to be caused are solved. According to the technical scheme, the rotary multi-way valve with the pressure maintaining and shock preventing functions comprises a valve body, a valve element, a front end cover, a back end cover and a safety valve assembly and further comprises a valve element positioning sheet, a reset spring, a fastening screw and a spring base; a valve element hole is formed in the center of the valve body, a P-cavity annular groove is formed in the middle of the valve element hole, a T-cavity annular groove is formed in the end, close to the back end cover, of the valve element hole, the P-cavity annular groove communicates with an oil inlet, and the T-cavity annular groove communicates with an oil return inlet; the valve element is arranged in the valve element hole and can rotate around the axis of the valve element and axially move; two groups of inclined fluid working channels and two groups of parallel vertical fluid working channels are formed in the axial cross section of the valve body.

The invention relates to an application method of an engine test stand, which comprises the steps of S100), adjusting the pressure of a simulation chamber; S200), adjusting the intake air total pressure and oxygen content of an engine; S300), adjusting the intake air total pressure of the engine; S400), adjusting the intake air total pressure of the engine; S500), igniting the engine; S600), conducting a simulation test on an Nth simulated state point; and S700), repeating the step S600 until all simulated state points are completely tested, turning off the engine, closing an engine fuel supply flow regulating valve, an oxygen supply flow regulating valve, an engine intake air supply pressure regulating valve and an alcohol supply flow regulating valve, and then closing an ejector active air flow supply pressure regulating valve. The application method of the engine test stand is high in regulating speed, saves the regulating time of engine air intake simulation and flight attitude environment pressure simulation of the test stand, reduces the test cost and avoids the waste of energy.

The invention provides a hydraulic locking oil way, an engineering machinery hydraulic system and a control method thereof, and belongs to the technical field of engineering machinery. The hydraulic locking oil way includes an oil inlet path P, an oil return path T, a handle hydraulic assembly and an electromagnetic valve, wherein an oil inlet of the handle hydraulic assembly is in communication with the oil inlet path P; an oil return port of the handle hydraulic assembly is in communication with the oil return path T; the electromagnetic valve is arranged on the oil inlet path P; and the electromagnetic valve is used for controlling the circulation of hydraulic oil in the oil inlet path P. The engineering machinery hydraulic system comprises the hydraulic locking oil way, an engineeringmachinery body, a controller and a locking device. The control method of the engineering machinery hydraulic system is applied to the engineering machinery hydraulic system. Whether the handle hydraulic assembly is effectively operated by the handle can be realized by controlling the on-off state of the electromagnetic valve, so that the occurrence of major accidents is avoided.

The bearing oil supply sleeve and the bearing oil supply device comprise a sleeve body, the sleeve body is provided with an oil collecting part, a flow distribution part and a bearing installation part, and the oil collecting part is arranged on the outer wall of the sleeve body and used for collecting oil at the oil collecting part; the bearing mounting part is arranged on the outer wall of the sleeve and is used for mounting an inner ring of a bearing; the flow distribution part is arranged in the pipe wall of the sleeve or on the inner wall of the sleeve and used for distributing oil collected by the oil collection part to the bearing installation part. According to the bearing oil supply device, the oil liquid at the position of the oil collecting part is collected and transferred to the flow distribution part, the collected oil liquid is distributed to the position of the bearing mounting part through the flow distribution part, the oil liquid is transferred to the inner ring of the bearing, and oil supply to the inner ring of the bearing is achieved. The lubricating and cooling effects of the inner ring of the bearing can be improved by utilizing oil supply of the inner ring, the lubricating oil consumption and the power loss are reduced, the overall lubricating and cooling effects of the bearing can be greatly improved, and safe and reliable operation of the bearing in a high-DN value use scene is met.

The invention provides a nacelle structure lubricating oil tank. The lubricating oil tank comprises a shell, an oil filling port, an oil supply pipe, a feathering oil supply pipe, a discharging valve,a discharging pipe, a communicating pipe, a breather pipe and a rear wall plate. The shell comprises a rear wall plate, a front wall plate, an inner skin, an outer skin and at least two sealing partitions. The at least two sealing partitions are arranged in an annular cavity enclosed by the rear wall plate, the front wall plate, the inner skin and the outer skin. At least two support partitions are arranged between the outer skin and the inner skin. The oil filling port is formed in the upper portion of the outer skin. The two sealing partitions below the outer skin are connected through thecommunicating pipe. The feathering oil supply pipe and the discharging pipe are arranged on the communicating pipe. The feathering oil supply pipe is connected with the aircraft feathering oil supplypipeline. The discharging pipe is located at the bottom of the communicating pipe. The discharging valve is arranged at the bottom of the discharging pipe. The oil supply pipe is arranged in the middle of the rear wall plate. The breather pipe is communicated with the left side and the right side of the lubricating oil tank.

The invention relates to a turbofan engine control system and method based on a rapid prototype, and belongs to the technical field of engines. By means of the turbofan engine control system and method, the turbofan engine control system is established by using the universal rapid prototype, and various control functions such as engine oil supply, ignition and protection are achieved. Meanwhile, the system has good versatility, strong expandability, the short development cycle and low cost, is suitable for the rapid development of engine control systems in the early development stage, can greatly reduce the development cost and can shorten the development cycle.

The invention discloses a supersonic engine test bed. The supersonic engine test bed comprises an air inlet system, an engine thrust measuring rack, an exhaust system, a silencing device and a high-altitude simulation cabin, wherein the high-altitude simulation cabin is of a sealed housing structure; the engine thrust measuring rack is fixedly mounted in the high-altitude simulation cabin; a tested engine is mounted on the engine thrust measuring rack; and one end of the exhaust system penetrates through the surface of a housing of the high-altitude simulation cabin and is fixedly mounted inside the high-altitude simulation cabin, and the other end of the exhaust system fixedly communicates with the silencing device. According to the supersonic engine test bed, the supersonic air inlet state of a supersonic engine is simulated when the supersonic engine and the engine are subjected to ground tests; meanwhile, the engine thrust measuring rack is used for measuring the thrust of the engine, and the structure is simple; and in addition, the silencing device is used for reducing the use number of silencing sheets on the premise that the silencing capacity is guaranteed, the occupied area is small, the application range is wide, and meanwhile, the cost is greatly reduced.

The invention relates to a motor vehicle accelerating and braking combination pedal. The upper part of the brake pedal is hinged with the fixed bracket, and the brake pedal forms a releasable active connection with the fixed bracket through the magnetic attraction assembly at its upper end, and the brake pedal reset part is arranged between the brake pedal and the fixed bracket; The brake pedal and the accelerator pedal are arranged front and back, and the lower parts of the two are hinged by the lower hinge shaft. The accelerator pedal reset part is arranged between the brake pedal and the accelerator pedal. wheel, retaining ring, drive assembly and movable shaft assembly; the stopper is in contact with the outer end of the movable shaft in the movable shaft assembly. Install the fixed bracket and block on the upper and lower parts of the front side of the cab, make the existing brake lever contact with the middle part of the brake pedal, make the rear end of the existing accelerator cable connect with the circumferential surface of the sheave, and then use it . As long as the accelerator pedal is pressed continuously and quickly, the oil supply state can be quickly transformed into the braking state, thereby ensuring driving safety.

The invention discloses a hydraulic centrifugal fan of an optimized structure. The hydraulic centrifugal fan comprises a support, a spiral casing, a vane wheel, a motor and a valve block. The spiral casing is fixed to the support through a bearing base. The motor is fixed to the bearing base, and a rotating shaft of the motor extends into the bearing base and is fixedly connected with a transmission shaft. Multiple grooves in linear arrangement are formed in the outer wall of the transmission shaft. One end of a locating rod is connected into the corresponding groove in an inserted manner. Thelocating rod is connected into a storage groove of a support seat. An annular through groove is formed in the outer side wall of the bearing base and communicates with the transmission shaft. The support seat is connected into the through groove in an inserted manner. The other end of the locating rod penetrates out of the support seat and is provided with a pull ring. One end of the pull ring penetrates out of the through groove. The part, located inside the storage groove, of the locating rod is provided with a baffle. The two ends of a compressed spring abut against the baffle and the inner wall of the storage groove correspondingly. By means of the hydraulic centrifugal fan, the problem that common fans cannot be modified due to fixed structures can be solved.

The invention relates to an application method of a supersonic engine test stand, which comprises the steps of S100), adjusting the pressure of a simulation chamber; S200), adjusting the intake air total pressure and oxygen content of an engine; S300), adjusting the intake air total temperature of the engine; S400), adjusting the intake air total pressure of the engine; S500), igniting the engine;S600), conducting a simulation test of an Nth simulated state point; and S700), repeating the step S600 until all simulated state points are completely tested, turning off the engine, closing an engine fuel supply flow regulating valve, an oxygen supply flow regulating valve, an engine intake air supply pressure regulating valve and an alcohol supply flow regulating valve, and then closing an ejector active air flow supply pressure regulating valve. The application method of the supersonic engine test stand realizes a ground simulation test of the supersonic engine, is high in regulating speed, saves the regulating time of engine air intake simulation and flight attitude environment pressure simulation of the test stand, reduces the test cost and avoids the waste of energy.