66 results about "Valve oil" patented technology

The application discloses a buoyancy adjusting and communication device for underwater AUV, which comprises a communication cabin body, an integrated antenna, an inner oil tank, an air bag, an air bag pressing ring, an air bag cabin body, a rear end cover, a pump valve gas path assembly, a pump valve oil path assembly, an outer oil tank assembly and the like. The communication cabin body is connected with an AUV pressure cabin body and is sealed through an O-shaped ring. The integrated antenna is installed on the communication cabin body and is sealed through an O-shaped ring, and is used for the communication function of the underwater AUV. The inner oil tank is fixed on the air bag cabin body, and the air bag is sleeved on the air bag cabin body and is tightly sealed through the air bag pressing ring. The pump valve gas path assembly is used for discharging the gas in the cabin to the air bag or sucking the gas in the air bag into the cabin, so as to change the buoyancy state of the AUV. The pump valve oil path assembly is used for discharging the hydraulic oil in the inner oil tank to the outer oil tank assembly or sucking the hydraulic oil in the outer oil tank assembly into the inner oil tank, so as to change the buoyancy state of the AUV.

The utility model discloses an oil gas inlet cleaning device for a combination valve, which relates to the technical field of valve cleaning and comprises a base, a machining table is fixedly erected on the top of the base, two fixing seats are fixedly connected to the top of the machining table, and two clamping cylinders are fixedly mounted in the fixing seats in a penetrating manner. Clamping blocks are fixedly connected to the telescopic ends of the two sets of clamping air cylinders correspondingly, a valve body is clamped and fixed between the two sets of clamping blocks, and an oil gas inlet of the valve body faces upwards. And the cleaning mechanism comprises a mounting base, a lifting air cylinder, a lifting base, a mounting frame, a motor, a cleaning brush and a liquid storage box, and the mounting base is in an L shape. The oil-gas inlet of the combination valve can be rapidly and conveniently cleaned and cleaned, time and labor are saved, efficiency is high, cleaning uniformity is good, meanwhile, waste liquid generated by cleaning and cleaning can be collected and filtered, waste liquid and impurity particles can be separated and treated in a centralized mode, and practicability is high.

The invention provides an oil insulation three-phase integrated converter transformer system. The system comprises a converter valve provided with a diode valve, a direct current side outgoing line and a converter transformer valve side outgoing line, and a three-phase three-winding converter transformer provided with three-phase winding structures, and each phase winding structure comprises a network side outgoing line, a valve Y side outgoing line and a valve D side outgoing line; the top of the converter valve oil tank is provided with a direct-current sleeve, and the side wall of the converter valve oil tank is communicated with a converter valve side sleeve; the top of the transformer oil tank is provided with a network side sleeve, and the side wall of the transformer oil tank is communicated with a valve Y side sleeve and a valve D side sleeve; a plurality of converter transformer valve side sleeves are respectively butted and communicated with a plurality of valve Y side sleeves and a plurality of valve D side sleeves; an alternating current side outgoing line is connected with a valve Y side outgoing line and a valve D side outgoing line; and an AC-DC conversion system is formed among the converter valve oil tank, the transformer oil tank, the converter transformer valve side sleeve, the valve Y side sleeve and the valve D side sleeve. Through the current conversion system provided by the invention, the problems of low integration level, large equipment quantity, large size, large occupied area, high cost, complex structure, complex electrical connection and the like of the current conversion system are solved.

The utility model relates to the technical field of bale collecting equipment, in particular to a hydraulic system of a small square bale bundling and collecting machine. The main hydraulic system comprises a plunger variable pump, a high-pressure filter and an electric proportional multi-way valve; the plunger variable pump adopts a plunger variable pump with pressure cut-off and load sensitive functions, and the electric proportional multi-way valve is a load sensitive electric proportional multi-way valve; the plunger variable pump is powered by a power shaft of a tractor; an oil inlet of the electric proportional multi-way valve is connected with a pressure oil port of the plunger variable pump through the high-pressure filter, and the high-pressure filter filters rolling oil. A control oil return port of the electric proportional multi-way valve is connected with the oil tank, and a load pressure feedback signal output port is connected with a feedback oil port of the plunger variable pump; the electric proportional multi-way valve comprises a multi-union reversing valve which is connected with an actuator to form hydraulic loops with different functions. The hydraulic system has the advantages of being high in output efficiency, saving fuel oil, reducing oil consumption, reducing heating of the hydraulic system, prolonging the service life of hydraulic elements and reducing pollution.

The utility model discloses a device for taking out a guide sleeve assembly of a steam turbine high-pressure combined valve hydraulic servo-motor, which relates to the technical field of tools for taking out guide sleeve assemblies of hydraulic servo-motors and comprises an outer ring, a plurality of tin bronze lining tiles used for taking out copper sleeves are arranged on the circumferential side of the inner ring of the outer ring, and threaded holes are formed in the periphery of the outer ring. A lead screw is connected into each threaded hole in a screwed mode, and a connecting assembly matched with the lead screws is arranged in the middle of the outer side face of the tin bronze lining tile. According to the taking-out device, the outer ring is matched with the lining tile and the lead screw, the aim of rapidly taking down the guide sleeve assembly of the valve hydraulic servo-motor is conveniently achieved, the lining tile is matched with the connecting assembly and the lead screw, the guide sleeve assemblies with different diameters can be rapidly taken down, and the taking-out device is simple in structure, convenient to operate and high in practicability. The guide sleeve assembly can be safely and rapidly disassembled, the labor intensity of workers is greatly relieved, and the working efficiency of disassembling operation is effectively improved.

The pressing head comprises a shaft seat and the pressing head, a connector of the pressing head is detachably connected with the shaft seat, the pressing head comprises a column body, the protruding connector is arranged on the front end face of the column body, a second cavity and a first cavity are sequentially formed in the rear end face of the column body from outside to inside, and the first cavity is communicated with the second cavity. The second cavity and the first cavity are coaxially arranged, the diameter of the second cavity is larger than that of the first cavity, an insertion head is arranged at the bottom of the first cavity and extends backwards, and the head of the insertion head penetrates out of the second cavity. The utility model has the beneficial effects that the pressure head, the valve oil seal and the shaft seat are assembled, then the insertion head is inserted into the valve guide pipe, and the shaft seat is pressed forcibly, so that the valve oil seal is sleeved on the valve guide pipe, the whole process is simple to operate, the workload is reduced, the valve oil seal can be used on other types of machines by replacing a front end pressure head, and the cost is saved.

The utility model belongs to carbonization furnace technical field, specifically disclose a kind of carbonization furnace feeding mechanism of material supplement, including feed bin, feed bin top is equipped with feed inlet, feed bin bottom is equipped with discharge gate, discharge gate is detachably connected with gate valve on, gate valve is detachably connected with supplement bin on, supplement bin is equipped with rotating mechanism inside, rotating mechanism includes bearing, the outer ring of bearing is fixedly connected with the outer wall of supplement bin one side, the inner ring of bearing is fixedly connected with worm, motor is equipped on worm one end, worm is meshed and is connected with worm wheel, worm wheel is fixedly connected with shaft, shaft is equipped with blade, supplement bin bottom is detachably connected with feeding valve. To the problem of carbonization furnace drum valve oil leakage causes equipment failure under prior art, the utility model changes drum valve into plug valve by the mode that supplement bin is set on plug valve, and further solves the problem that carbonization furnace drum valve oil leakage causes equipment failure and influences production, and there is certain security risk under high temperature environment.

The utility model relates to the technical field of testing devices, and provides a performance testing device for an integrated valve oil cylinder, which comprises a testing workbench and a power mounting table, a workbench surface is formed on the surface of the testing workbench, and an oil collecting assembly and a testing tool are arranged on the workbench surface; the operating table is arranged on one side of the working table top, a touch screen, operating buttons, an instrument panel and a quick plug module are arranged on the operating table, the touch screen is used for man-machine interaction, the operating buttons are used for controlling corresponding test systems, the instrument panel is used for displaying corresponding test data, and the quick plug module is used for being connected with oil ports of a tested object; the power mounting table is selectively connected with the test workbench and comprises an oil tank and an oil pump, the oil pump is arranged on one side of the oil tank, and the oil tank is used for supplying oil to a tested object; the oil tank is further connected with the oil collecting assembly. According to the utility model, various working conditions of the tested object in different working scenes can be simulated, and performance testing can be carried out on various complex conditions encountered by the tested object in practical application.

The invention relates to a hydraulic valve with a non-contact valve element position detection function and a control method of the hydraulic valve. The hydraulic valve comprises a valve body, a valve element, a laser displacement sensor, a pressure sensor and a driving unit. The valve element is arranged in the valve body, one end of the valve element is connected with the driving unit, the other end of the valve element is provided with a detection part, the laser displacement sensor is arranged in front of the detection part, the detection part moves within the detection range of the laser displacement sensor, and the laser displacement sensor emits laser towards the end face of the detection part and receives reflected light of the end face of the valve element at a certain angle. The valve body is provided with a working oil port, an oil inlet and an oil return port in the axial direction, the working oil port is communicated with an external load, and the pressure sensor is arranged at the working oil port. Compared with the prior art, accurate, reliable and efficient detection of the displacement of the valve element is achieved through the non-contact laser displacement sensor, the on-off state, the flow size and the flow direction of a valve oil port are conveniently controlled, and accurate control and reliable operation of a whole hydraulic system are facilitated.

The invention discloses an anti-backflow compact distribution valve suitable for a high-pressure upward conveying working condition, which comprises a suction valve shell, a transition shell and a discharge port shell, a discharge port of the suction valve shell is communicated with a feed port of the transition shell, and a discharge port of the transition shell is communicated with a feed port of the discharge port shell; a suction valve oil cylinder with a piston rod is arranged at the top of the suction valve shell, the piston rod of the suction valve oil cylinder extends into a working cavity of the suction valve shell, a suction cone valve is arranged at the end, extending into the working cavity of the suction valve shell, of the piston rod of the suction valve oil cylinder, a port B is formed in the side end of the suction valve shell, a suction valve seat is arranged on the inner side of the port B, and a port C is formed in the side end of the transition shell. A pressure valve oil cylinder with a piston rod is arranged at the top of the discharging port shell, the piston rod of the pressure valve oil cylinder penetrates through a working cavity of the discharging port shell, a pressure cone valve is arranged at the end of a feeding port of the discharging port shell, a pressure valve seat is arranged on the inner side of the feeding port of the discharging port shell, and a discharging port is formed in the discharging port shell.

The application discloses a double-valve oil injector reliability test system, and belongs to the technical field of monitoring of test systems, and comprises a fuel supply and recovery subsystem, an oil tank, an oil injection part, an oil injector tool and a control unit, the inlet end of the oil injection part is communicated with the oil tank, the outlet end of the oil injection part is communicated with the oil inlet end of the double-valve oil injector through the oil injector tool, the oil injector tool is further used for bearing the oil injector and taking fuel, and the control unit is used for controlling fuel pressure, fuel injection amount and fuel injection frequency; and a monitoring subsystem is used for controlling and monitoring the operation of the fuel supply and recovery module and comprises an image acquisition module, wherein the image acquisition module is used for acquiring spray characteristic images of the double-valve oil injector. The application can timely monitor whether the double-valve oil injector leaks oil.

The invention relates to a multi-high-speed switch valve collaborative load port independent system and a control method thereof, and belongs to the technical field of high-speed switch valve electro-hydraulic control. The system is composed of a hydraulic transmission structure and an electric control system and mainly comprises an asymmetric hydraulic cylinder, six high-speed switch valves, a displacement sensor and two pressure sensors. Wherein the four high-speed switch valves form a full-bridge loop to achieve independent control over two cavities of the actuator, and the two oil return branches are each connected with one high-speed switch valve in parallel to form a parallel oil return valve set so as to improve the oil return through-flow capacity. According to the control method, a single-valve oil return mode and a parallel flow expansion oil return mode are set, and mode switching is conducted according to a speed threshold value or a back pressure error threshold value; on the basis, a self-adaptive robust controller is designed to achieve pressure-flow compound control, and then position tracking and backpressure stable control are achieved. While the structure is kept compact and easy to integrate, high-precision control and low energy consumption of the system can be considered.

The utility model discloses a novel non-stop ash discharging device for a fixed bed gas producer, belongs to the field of devices for fixed bed gas producers, and aims to provide a non-stop ash discharging device which improves the working efficiency, reduces the emission of toxic and harmful gases and completely eradicates safety accidents. The sealing structure comprises an upper valve, an upper valve oil cylinder, an oil cylinder support, a sealing filler assembly, a valve rod, a valve element, a transition short section, an ash hopper, an ash discharging round door and an ash discharging oil cylinder, the upper valve is provided with the transition short section, an original ash discharging square opening is transited into a round opening, the round opening is provided with a sealing face, the sealing effect is better, two sealing assemblies are arranged on the outer side of the valve rod, and the valve rod is sealed without air leakage.

The utility model discloses a valve oil seal packing and dismantles protection frock, the utility model discloses a left clamping rod, right clamping rod, rivet, protection clamping seat, antiskid cover, first adjusting assembly, spring and second adjusting assembly, and right clamping rod rotationally connected in the right side of left clamping rod, and rivet fixedly arranged on left clamping rod and right clamping rod, and protection clamping seat fixedly arranged at the bottom of left clamping rod and right clamping rod, and the inboard of protection clamping seat has the first buffer pad, and antiskid cover fixedly arranged at the top of left clamping rod and right clamping rod, and the outside of antiskid cover is provided with antiskid line, and first adjusting assembly fixedly arranged at the right side of left clamping rod, and spring fixedly arranged at the right side of first adjusting assembly, and second adjusting assembly fixedly arranged on spring and right clamping rod. The utility model discloses a first adjusting assembly, spring and second adjusting assembly can be continuously clamped valve oil seal, save time and labour, can adjust the clamping force simultaneously, avoid the valve oil seal to be pressed and be broken.

The application discloses a tractor electric proportional power reversing valve group, which comprises a valve body, an overflow valve, a reversing electromagnetic valve and a cut-off electromagnetic valve arranged on the valve body; the cut-off electromagnetic valve oil inlet is connected with an oil inlet channel; the cut-off electromagnetic valve oil outlet, the reversing electromagnetic valve oil inlet and the overflow valve oil inlet are connected in parallel through an oil inlet channel two; the reversing electromagnetic valve forward gear oil outlet is connected with a working oil channel one; the reversing electromagnetic valve backward gear oil outlet is connected with a working oil channel two; the overflow valve oil outlet is connected with an oil return channel four; the reversing electromagnetic valve oil return and the cut-off electromagnetic valve oil return are connected in parallel to an oil return channel two. Through the interaction between the overflow valve and the proportional electromagnetic valve, the proportional electromagnetic valve is provided with different currents in different time periods, adjustable working oil pressure is provided for the clutch oil filling, the process from the clutch oil filling to mutual engagement and tightness of the clutch internal friction plate is soft and free of impact, and the mechanical transmission effect is achieved.

The invention relates to the technical field of tractor distributors, and discloses a distributor with a one-way valve for a tractor and a method thereof.The distributor comprises a hydraulic distributor, a mounting pipe is mounted on the hydraulic distributor and arranged in the vertical direction, and a valve body shell is mounted at the end, away from the hydraulic distributor, of the mounting pipe; a detachable end cover is arranged at the end, away from the mounting pipe, of the valve body shell, an oil supply pipe is connected to the end cover, a floating assembly is arranged on the oil supply pipe, and a first groove chamber, a second groove chamber and a third groove chamber are formed in the valve body shell. When the one-way valve is used, the sealing ring contracts and is separated from the groove wall of the second groove chamber before the valve element moves, the sealing ring does not make contact with the groove wall in the moving process, mutual abrasion is avoided, abrasion is reduced on the basis of guaranteeing the sealing effect, the service life of the sealing ring is prolonged, and oil leakage of the one-way valve is prevented.

The utility model relates to the technical field of plunger pumps, in particular to a closed type axial plunger pump swing frame emergency centering system which comprises a closed type plunger pump, and the closed type plunger pump comprises a swing frame. Comprising a variable piston assembly, the variable piston assembly comprises a variable piston, a cavity a is formed in the left side of the variable piston, a cavity b is formed in the right side of the variable piston, and a piston spring abutting against the front end of the variable piston is arranged in the cavity b and connected with a swing frame; the cavity a is connected with an emergency middle return valve through an oil way; during electrification, control oil enters the cavity a through the emergency return valve, the variable piston is pushed to compress the piston spring rightwards, and the swing frame is driven to rotate; when power is cut off, control oil does not pass through the emergency return valve, and the piston spring pushes the variable piston leftwards to drive the swing frame to return to the zero position. Emergency centering of the swing frame is achieved in a brand new mode, so that the stability and safety of a vehicle hydraulic system under the braking working condition are optimized, and the service life of the vehicle hydraulic system is prolonged.

The application discloses a self-cleaning multifunctional valve assembly, which comprises a valve, a bushing arranged outside the valve, a spring seat and an oil filter connected with the bushing respectively, a second hole and a third hole arranged on the side of the bushing, a fourth hole arranged on the side between the spring seat and the oil filter, an adjusting washer arranged in the fourth hole, a first hole arranged at one end of the valve, a big spring arranged at the other end of the valve, a cap arranged outside the oil filter, a small spring arranged in the oil filter, and a left valve oil passage cavity and a right valve oil passage cavity separated by a connecting part in the bushing. The application can realize the functions of cooling, cleaning and pressure boosting, reduces the influence of the ambient temperature rise on the turbine starter under the condition that the turbine starter does not work while the aero-engine works, and ensures the normal work of the turbine starter. Moreover, the pressure boosting function of the structure ensures that the fuel supplied to the turbine starter has a certain pressure.

The hydraulic driving device comprises a hydraulic oil supply end, an electro-hydraulic reversing valve, a valve oil cylinder and a hydraulic oil outlet end, hydraulic driving is used for replacing conventional electric driving, and the situation that a bypass valve cannot be opened due to power failure of a whole hot air system due to faults can be prevented, so that the valve can be quickly opened. After a hydraulic driving system is adopted, a valve can still be opened through hydraulic driving even in a power-off state, in a hot air system with the high safety requirement, hydraulic driving is used for replacing traditional electric driving, and therefore the hydraulic driving system is high in safety performance and high in safety performance. The method is an effective technical means for improving the emergency capability and the safety guarantee level of the system.

The utility model discloses a valve oil seal press -packaging frock belongs to valve oil seal installation technical field, has solved current valve oil seal installation mode assembly efficiency problem. The valve oil seal press -packaging frock, including press -packaging body, be equipped with first step hole on the press -packaging body, be equipped with internal thread on the inner wall of first step hole, first step hole internal thread be connected with threaded connection sleeve, the top of first step hole is equipped with second step hole, the diameter of second step hole is less than the diameter of first step hole, just the first step hole with second step hole between form has the step face, the end surface of threaded connection sleeve and step face are attached, the inner diameter of second step hole is less than the inner diameter of threaded connection sleeve, be equipped with rubber pad on the step face of threaded connection sleeve inboard, the top of press -packaging body is equipped with the stamping device. The utility model discloses a valve oil seal press -packaging frock, effectively improves assembly efficiency.

A ship lock water delivery valve stroke detection device based on a double-magnetostatic magnetic railing ruler comprises a sleeve, the sleeve is installed on a cylinder body of a water delivery valve oil cylinder through a hoop, one end of a measuring rod is inserted into the sleeve, and the other end of the measuring rod is hinged to a piston rod of the water delivery valve oil cylinder; a plurality of sets of proximity switches are installed outside the sleeve in the length direction and used for detecting the position of a ship lock water conveying valve. The sleeve is provided with a static magnetic railing ruler, and the static magnetic railing ruler is used for detecting the stroke of the ship lock water delivery valve. The ship lock water delivery valve stroke detection device based on the double-magnetic static magnetic railing ruler not only can improve the measurement precision, but also is convenient to maintain.

The invention discloses a noise reduction fuel pump pressure regulating valve oil return device which comprises a shell, a pump body and a pressure regulator, an oil return assembly is arranged on the outer surface of a fuel pump assembly, a transposition mechanism is installed in the oil return assembly, the oil return assembly comprises an oil return barrel, a sputtering baffle, a spring and a settlement plate are arranged in the oil return barrel, and the transposition mechanism comprises a barrel shell. A sliding opening is formed in the center of the surface of the barrel shell, impact kinetic energy of high-pressure return oil is absorbed and dissipated through cooperation of an inclined sputtering baffle and spring buffering, harsh turbulent noise is converted into low-frequency vibration, meanwhile, the oil film area is increased through a conical sedimentation plate, the residence time is prolonged through the conical sedimentation plate, bubbles fully float upwards and are separated under the action of gravity and buoyancy force, and the oil-gas separation effect is achieved. On the premise of not depending on any electronic noise reduction equipment, noise generated in the oil return process is greatly reduced only through a physical structure, bubbles in fuel oil are effectively removed, oil supply fluctuation caused by air resistance is avoided, and smoothness of engine operation and long-term stability of an oil supply system are guaranteed.

The utility model discloses a special tool for installing an engine valve oil seal, which comprises a stabilizing plate, the outer side of the stabilizing plate is provided with an installing mechanism, the installing mechanism comprises a moving column, the outer side of the moving column is connected with a lifting frame in a sliding manner, the top of the lifting frame is fixedly connected with a workpiece clamping ring, and the workpiece clamping ring is fixedly connected with a workpiece. An electric telescopic rod is fixedly connected to the interior of the lifting frame, a pushing rod is fixedly connected to the bottom of the electric telescopic rod, a sliding disc is fixedly connected to the bottom of the pushing rod, and a sliding groove is formed in the inner wall of the moving column. The lifting frame drives the workpiece clamping ring to drive the oil seal to move to an area where the oil seal needs to be installed, then the electric telescopic rod is started to drive the pushing rod to move, at the moment, the pushing rod can drive the sliding disc to push the oil seal to the engine valve installation position, and the effect of efficient installation is achieved.

The utility model discloses a manual valve oil-exposed electronic cigarette, and relates to the technical field of electronic atomization devices.The electronic cigarette comprises a body provided with an atomization channel, an oil storage cavity formed in the body, a valve body mechanism controlling oil supply opening and closing of the oil storage cavity and a switch part arranged on the side wall of the body; the switch part can linearly slide in the axial direction and is in movement fit with the valve body mechanism, and then the valve body mechanism is driven to switch the oil supply opening and closing state. An atomization assembly is arranged in the main atomization channel and communicated with the oil storage cavity through the oil way connector, and the valve body mechanism is installed at the position of a communication opening of the oil storage cavity and the atomization assembly and comprises a valve element in sealing fit with the communication opening and a rotary transmission mechanism driving the valve element to move in the axial direction. And the rotary transmission mechanism is in motion coupling with the switch part through a linkage structure. According to the electronic cigarette, an oil supply switch and an air adjusting switch are combined through structural innovation, and the air adjusting function is reserved on the premise that the double functions of cigarette oil on-off and leakage prevention are achieved through a single rotary knob.

The invention belongs to the technical field of steam turbine generator unit monitoring, and particularly relates to a steam turbine generator unit oil leakage fault prediction method which comprises the following steps: measuring the temperature of an oil return port of a speed regulation steam valve in real time, and if the temperature is abnormally increased, determining that oil leakage occurs in the speed regulation steam valve; the motor current and power of the high-pressure adjusting oil station are measured in real time, and if the motor power is increased, the oil system leaks oil; oil pressure in the oil pipe is monitored in real time, if the oil pressure is reduced, oil leakage occurs, and the specific oil leakage position is comprehensively judged according to the temperature and the motor power; and the granularity of the ferromagnetic particles is monitored at the position needing to be lubricated, and if the granularity becomes small, it is judged that lubricating oil leaks at the lubricating position. The method has the beneficial effects that the monitoring precision is high, detection points are comprehensive, oil leakage and lubricating oil leakage at all positions of the steam turbine generator unit can be effectively detected, the detection result can be quickly processed after being sent, the response is timely and quick, and efficient and safe operation of the steam turbine unit is ensured.

The application discloses a kind of intelligent rock drilling jumbo hydraulic oil temperature control system and control method, including control unit, execution unit, oil return unit, heat dissipation unit and detection unit, control unit includes controller, solenoid valve, pressure reducing valve, execution unit includes execution cylinder and ball valve, oil return unit includes total oil return pipe, first oil return branch pipe, second oil return branch pipe, detection unit includes oil tank and temperature sensor.Solenoid valve is electrically connected with controller, and is connected with pressure reducing valve oil circuit.Execution cylinder big cavity, small cavity are connected with solenoid valve oil circuit respectively, and ball valve is mechanically connected with oil cylinder telescopic rod.Total oil return pipe and first oil return branch pipe and second oil return branch pipe keep passage, wherein first oil return branch pipe is communicated ball valve, and ball valve is communicated with oil tank oil circuit.Second oil return branch pipe is communicated heat dissipation unit, and heat dissipation unit is communicated oil tank.One end of temperature sensor is connected oil tank, and the other end is connected controller.The application hydraulic pipeline arrangement is simple, convenient to operate, and oil temperature control precision is high.

The invention discloses an aviation lubricating oil tank oil drainage method and a valve. The valve comprises a valve cavity, a first external pipe orifice, a second external pipe orifice, a valve element screw rod, a handle and a valve cavity cover. The valve element is arranged on the outlet end face of the oil drainage pipe nozzle of the aviation lubricating oil tank, when the valve element is far away from the oil drainage pipe nozzle, the valve is opened, lubricating oil flows into the tank body for temporarily storing the lubricating oil through the oil drainage pipe nozzle, and the lubricating oil in the tank body is pumped away through the oil suction machine; when oil drainage of the aviation lubricating oil tank is completed, the valve element is attached to the outlet end face of the oil drainage pipe nozzle, and the corresponding valve is closed. The problem that the internal volume of the lubricating oil tank is changed due to oil drainage through a common valve after an oil level calibration test is conducted on the aviation lubricating oil tank is solved, and compared with gravity oil drainage, the speed is higher, and the internal volume of the lubricating oil tank cannot be affected.

The invention discloses a squeeze film damper based on a one-way valve oil supply structure, belongs to the technical field of structural design of squeeze film dampers of aero-engines, and aims to solve the problems that periodic high-pressure backflow and low-pressure cavitation can be generated when a traditional squeeze film damper works. The extrusion oil film damper comprises an outer sleeve, an outer ring and a mouse cage inner ring, the mouse cage inner ring is coaxially sleeved with the outer sleeve and the outer ring in sequence from outside to inside, two one-way valve oil supply units are installed on the outer sleeve, and the two one-way valve oil supply units are orthogonally arranged; external oil sequentially flows through the outer sleeve and the outer ring through the two one-way valve oil supply units and enters the oil film area of the outer ring and the inner ring of the mouse cage, and the oil film damper is extruded to prevent internal high-pressure lubricating oil from flowing back through the one-way valve oil supply units. The damping structure is mainly used as a damping structure of a shafting mechanism in an aero-engine.

The application aims to provide a double-extraction back turbine control method based on fuzzy PID, and belongs to the field of turbine. The method comprises the following steps: increasing the high-pressure extraction heat load, taking e1 and delta e1 as the input of the fuzzy controller, and performing fuzzy processing; performing fuzzy logic operation to form fuzzy output; performing inverse fuzzy processing on the fuzzy output, inputting Kp, Ki and Kd to the PID controller, and the PID controller calculating and adjusting the control signal; adjusting the double-seat valve opening degree by the electro-hydraulic control system; taking e i , delta e i as the input of the fuzzy control, calculating Kp, Ki and Kd; and the PID controller outputting to the double-seat valve oil engine, the rotating baffle oil engine and the main steam regulating joint valve oil engine to adjust the double-seat valve, the rotating baffle and the main steam valve opening degree. The application adjusts the PID control parameters Kp, Ki and Kd through the error e i and the error change rate delta e i , improves the control precision, reduces the response time, and solves the problems of complex control mathematical model and difficult expert system knowledge acquisition of the double-extraction back turbine control.

The invention discloses a drip oil recovery device of a valve, and belongs to the technical field of valves, the drip oil recovery device comprises a valve body and a shell, an oil receiving cavity is formed in the shell, a rotating cavity is formed in the shell, a rotating ring is rotatably mounted in the rotating cavity, the oil receiving cavity is located between a butt joint port of the valve body and the rotating ring, and a moving cavity is formed in the rotating ring; a first inserting pipe is fixed to the side face, close to the rotating ring, of the oil receiving cavity in a penetrating mode, a connecting hole is formed in the side face, close to the oil receiving cavity, of the moving cavity and can communicate with the first inserting pipe, a second inserting pipe is fixed to the top of a pipeline of the valve body in a penetrating mode, and a mounting hole is formed in the side face, close to the valve body, of the moving cavity and can communicate with the second inserting pipe. One-way valves are arranged in the first inserting pipe and the second inserting pipe, a pushing block is slidably installed in the moving cavity in the radial direction of the rotating ring, and a driving piece used for pushing the pushing block to move is arranged on the shell. According to the device, leaked oil can be recycled, and waste of oil products is reduced.