3761 results about "Oil intake" patented technology

The present invention relates to the field of construction machinery, and in particular to a tensioning force control device for prestressed sleepers. The present invention solves the problems of a large prestress deviation and low tensioning positioning efficiency during tensioning of prestressed steel wires. The device comprises a tensioning module, a tensioning rod and a locking module. The tensioning module comprises a tensioning jack and a tensioning rod connector. The tensioning jack comprises a plurality of cylinder bodies provided with piston rods. Oil injection cavities of the plurality of cylinder bodies are communicated and oil return cavities thereof are also communicated. The piston rods are connected to the tensioning rod connector. The tensioning rod connector is temporarily connected to the tensioning rod when in use. The outer wall of the tensioning rod is provided with a nut gear in threaded fit with the tensioning rod. The tensioning rod is provided with a tensioning stepped hole. The locking module comprises a locking motor and a locking gear that is engaged with the nut gear when in use. The locking motor is connected to the locking gear. Each piston rod is used for tensioning one prestressed steel wire, and synchronized oil intake and return for the plurality of piston rods are achieved, alleviating the overlarge prestress deviation between the prestressed steel wires. The locking module allows for time-saving and labor-saving tensioning positioning.

The invention discloses a balance valve, a hydraulic control system and an operation machine. A valve cavity is formed in a valve body of the balance valve, and an oil inlet and an oil return opening are formed in the circumferential wall of the valve cavity; the valve element and the control piston are inserted into the valve cavity in a sliding mode from the two axial ends, the valve element comprises a first element body and a second element body which is inserted into the first element body in a sliding mode in the axial direction, and a first concave part and a second concave part which are arranged at intervals in the axial direction are formed in the peripheral wall of the first element body. A first cavity and a second cavity are respectively formed between the first concave part and the inner peripheral wall of the valve cavity and between the second concave part and the inner peripheral wall of the valve cavity, so that the overflowing area between the first core body and the valve cavity can be increased, and the oil inlet and the oil return port are respectively and correspondingly communicated with the first cavity and the second cavity; the driving end of the control piston penetrates through the first core body, the control piston and the second core body are coaxially and oppositely arranged in a spaced mode, and the control piston moves in the axial direction to drive the second core body to move in the axial direction and drive the first core body to move, so that oil in the first cavity and oil in the second cavity are communicated or blocked.

Disclosed is a hydraulic control system for safe rapid opening or closing of a valve. The hydraulic control system comprises a hydraulic cylinder (71), a pressure oil line (141), an oil return line (151), an oil drain line (161), a quick oil return line (171) and a valve manifold (181), wherein the inside of the valve manifold is provided with a three-position four-way directional control valve (51), a bidirectional hydraulic lock (31), a first two-position four-way directional control valve (61) and an energy accumulator (191); a first cartridge valve (101) is connected between the oil drain line and a rod cavity of the hydraulic cylinder, and a pilot port of the first cartridge valve is connected to a port A of the first two-position four-way valve; an oil inlet of the energy accumulator is connected to each of the pressure oil line and the oil return line, a first check valve (81) is connected between the oil inlet of the energy accumulator and the pressure oil line, and a second cartridge valve (102) is connected between the first check valve and the energy accumulator; and the second cartridge valve is connected to a rodless cavity of the hydraulic cylinder, and a pilot port of the second cartridge valve is connected to the port A of the first two-position four-way directional control valve. The hydraulic control system for safe rapid opening or closing of a valve allows for safe rapid opening or closing of a valve.

A constant-flow control valve group, an auxiliary arm control module, a complete hydraulic system, and a crane. The constant-flow control valve group comprises: a cartridge valve; a cartridge reversing valve, comprising a working oil port on one side and a main oil return port and a reversing valve oil inlet selectively connected to the working oil port on the other side, the working oil port being connected to a control oil port of the cartridge valve, and the reversing valve oil inlet being connected to a main oil inlet of the cartridge valve; and a feedback on-off valve, disposed in a working feedback oil path connected between the main oil inlet of the cartridge valve and a main feedback oil port of the constant-flow control valve group. The auxiliary arm control module comprises the constant-flow control valve group and a main reversing valve. The complete hydraulic system comprises the auxiliary arm control module and an auxiliary arm luffing cylinder, and may further comprise a load-sensitive oil pump and a main valve. The present application can achieve the effect of directly connecting an auxiliary arm hydraulic system to an existing complete hydraulic system as a sub-module without altering the original system.

The present invention discloses an improved structure of an oil channel of an oil filter base assembly in a vehicle, including an oil filter base, where a lower portion of the oil filter base is provided with an oil inlet, an oil outlet, and an oil return port, an end portion of the oil filter base is provided with an antifreeze solution water inlet, a bottom portion is provided with a first water outlet and a second water outlet that are communicated with the antifreeze solution water inlet, a filter cartridge and a bypass valve are mounted in one end of the oil filter base, a filter cover is connected to an end portion of one end, close to the bypass valve, of the oil filter base, an oil cooler is mounted on an upper portion of one end, away from the filter cartridge, of the oil filter base.

The utility model discloses a positive displacement gear lubricating pump which has the advantages of being simple in structure and capable of effectively reducing installation and machining requirements. The device comprises a driving motor, a pump seat, a mounting seat, an oil tank, a gear pump, an oil suction pipe and an oil outlet pipe, the pump seat is mounted above the oil tank and seals the oil tank, the mounting seat is mounted on the pump seat, the driving motor and the gear pump are mounted above and below the mounting seat respectively, and the driving motor is connected with the gear pump and drives the gear pump to operate. The gear pump is arranged in the oil tank, the first end of the oil suction pipe is communicated with an oil inlet of the gear pump, the second end of the oil suction pipe extends to the bottom of an inner cavity of the oil tank, and the first end of the oil outlet pipe is communicated with an oil outlet of the gear pump.

The invention discloses a power generation and driving integrated device with an active lubricating system. The power generation and driving integrated device comprises a motor shell, a motor, a planetary gear mechanism, a transmission gear set, a filter, an electronic pump, a flywheel shell and a motor shell cover plate. The motor shell comprises a motor cavity for accommodating the motor and a gear cavity for accommodating the planetary gear mechanism and the transmission gear set, the flywheel shell seals the gear cavity, and the motor shell cover plate seals the motor cavity; the bottom of the gear cavity is divided into an oil suction cavity through a motor shell oil separation rib, an oil return groove is formed in the connecting position of the motor shell oil separation rib and the bottom of the gear cavity, the filter is contained in the oil suction cavity, the electronic pump partially stretches into the oil suction cavity and is connected with the filter, and an oil outlet of the filter is communicated with an oil inlet of the electronic pump. According to the invention, stable active lubrication of parts with lubrication and cooling requirements, such as shafts, gears, bearings, motors and the like, is realized. Meanwhile, gear oil stirring can be reduced, and the speed reducer efficiency is improved.

The invention relates to the technical field of motor cooling, in particular to an oil-water composite cooling motor heat dissipation structure and a heat dissipation method thereof.The oil-water composite cooling motor heat dissipation structure comprises a machine shell, a stator iron core, a winding and a rotor are arranged in the machine shell, and a hollow shaft is inserted into the rotor in a penetrating mode. Water flows through the S-shaped water channel on the casing, the casing and the stator core are cooled when the water passes, most heat is taken away, and basic temperature control is maintained; cooling oil is guided into the first oil cooling channel, the second oil cooling channel and the third oil cooling channel through the oil inlets, it is guaranteed that all positions of the stator can make synchronous contact with heat dissipation oil in the first oil cooling channel, particularly, effective heat dissipation is conducted on a stator iron core, the oil enters an oil injection ring, and the cooling effect is improved. According to the utility model, oil is sprayed to a stator winding at 360 degrees circumferentially, heat dissipation is enhanced, the other two oil cooling channels guide oil to a bearing and a rotor respectively, a plurality of heating parts can be considered, a specific oil way is designed to directly cool the heating parts, the lubricating and heat dissipation efficiency is improved, and high-speed operation of the motor is realized.

Disclosed in the present invention are a crane upper and lower structure interlocking system, and a crane. In the system, a third-stage pump of a hydraulic pump set is connected to an oil inlet P of an outrigger extension and retraction valve, and an extension and retraction switching valve in the outrigger extension and retraction valve is connected to the oil inlet P of the outrigger extension and retraction valve. A first working oil port and second working oil port of a locking valve are both connected to a fifth working oil port of the extension and retraction switching valve; a third working oil port of the locking valve is connected to a rod cavity of each of a horizontal oil cylinder, a vertical oil cylinder and a fifth outrigger oil cylinder; and a fourth working oil port of the locking valve is connected to a sixth working oil port of the extension and retraction switching valve. When a boom is in a non-stowed state, the locking valve is deenergized and operates in a right-hand position; at this moment, regardless of whether the extension and retraction switching valve is in an upper position or a lower position, an oil outlet thereof is directly connected to an oil return port through the locking valve to enable pressure unloading, and the horizontal oil cylinder, the vertical oil cylinder and the fifth outrigger oil cylinder remain motionless, thereby achieving locking. The present invention can achieve unloading of an oil inlet line when misoperation of an outrigger handle occurs during upper-structure operation, achieving the locking function against misoperation.

A winch hydraulic control system includes a hydraulic oil tank, a hydraulic pump, and an electric motor. The hydraulic pump's oil inlet is connected to the hydraulic oil tank, the electric motor is connected to the hydraulic pump, and the hydraulic pump's oil outlet is connected to both port P of the main reversing valve assembly and port P of the control valve assembly. Ports A and B of the main reversing valve assembly are connected to port A of the first shuttle valve, port A of the balancing valve assembly, and port B of the control valve assembly, respectively. Port X is connected to port B of the second solenoid reversing valve. Ports B and C of the first shuttle valve are connected to port B of the balancing valve assembly and port B of the second shuttle valve, respectively. A third pressure reducing valve is connected in parallel with the second solenoid valve. Port P of the second solenoid reversing valve is connected to port X of the control valve assembly, port A of the second shuttle valve, and port SP of the balancing valve assembly. Port C of the second shuttle valve is connected to the rod chamber of the brake. The brake is connected to the hydraulic motor, and the oil outlet of the control valve assembly is connected to the oil inlet of the balancing valve assembly. This design can maintain constant wire rope tension and stable operation.

The invention discloses an unmanned mining dump truck hydraulic braking system and a control method. The unmanned mining dump truck hydraulic braking system comprises a service brake valve set and a parking brake valve set. The service brake valve group comprises a first hydraulic proportional pressure reducing valve, a second hydraulic proportional pressure reducing valve, a first shuttle valve and a first pressure sensor; the first hydraulic proportional pressure reducing valve and the second hydraulic proportional pressure reducing valve are connected in parallel; oil outlets of the first hydraulic proportional pressure reducing valve and the second hydraulic proportional pressure reducing valve are communicated with an oil inlet of a first shuttle valve; an oil outlet of the first shuttle valve is connected with a first pressure sensor; the parking brake valve group comprises an electromagnetic directional valve, a redundant electromagnetic directional valve and a pressure switch; the electromagnetic directional valve is a normally closed valve, and the redundant electromagnetic directional valve is a normally open valve; the electromagnetic directional valve and the redundant electromagnetic directional valve are connected in series, the electromagnetic directional valve is connected with an oil inlet pipeline, the redundant electromagnetic directional valve is connected with an oil outlet pipeline and a parking brake caliper, and a pressure switch is arranged on the oil outlet pipeline.

The invention discloses a system and method for testing flow, displacement and hydraulic power of a main valve element. The system comprises two displacement sensors, a tested balance valve and a hydraulic testing assembly. A main valve core and a pilot valve core of the tested balance valve are coaxially and oppositely arranged; the two displacement sensors are coaxially fixed with the main valve core and the control piston respectively; the hydraulic test assembly detects the pressure of an oil return port A, a load oil port B, a feedback spring cavity pressure measuring port Pc and a pilot oil inlet X through pressure sensors; the load pressure, the pilot pressure and the oil return back pressure are controlled through a main load oil way, a pilot control oil way and an oil return back pressure oil way respectively, and meanwhile the flow of the oil return is measured through a flow meter. According to the invention, the flow, displacement and hydraulic force of the main valve core under different working conditions can be synchronously and dynamically measured.

The utility model relates to the field of hydraulic braking, and discloses a parking braking system and agricultural machinery, the parking braking system comprises a parking brake, a first reversing valve, a second reversing valve and an energy accumulator, a working oil port of the first reversing valve is connected with a rod cavity of a brake cylinder of the parking brake, an oil inlet of the first reversing valve is connected with an oil inlet path, and an oil outlet of the second reversing valve is connected with an oil outlet path; an oil return port of the first reversing valve is connected with an oil return path, in a power-off state, a working oil port of the first reversing valve is communicated with the oil return port, an oil outlet of the second reversing valve is connected with the oil return path, in the power-off state, an oil inlet of the second reversing valve is communicated with the oil outlet, and the energy accumulator is connected with the oil inlet of the second reversing valve. According to the parking braking system, the situation that tires are locked when the agricultural machine loses power accidentally in the running process can be avoided, and meanwhile the agricultural machine can be slowly and stably decelerated till the agricultural machine is stopped and parked.

The utility model discloses a motorcycle engine crankshaft box body with an oil separation chamber, which comprises a crankshaft box body formed by connecting a left crankshaft box body and a right crankshaft box body, crankshaft mounting holes and balance shaft mounting holes are arranged on the left crankshaft box body and the right crankshaft box body, and the crankshaft mounting holes and the balance shaft mounting holes are distributed in a pairwise corresponding mode. An oil collecting chamber is arranged at the lower end in the crankcase body, and the balance shaft mounting hole is arranged close to the maximum oil liquid level position of the oil collecting chamber; the bottom of the oil collection chamber is provided with an oil separation chamber which is arranged close to the balance shaft mounting hole, the upper end of the oil separation chamber is close to the maximum oil liquid height of the oil collection chamber, and one side, far away from the balance shaft mounting hole, of the oil separation chamber is provided with an oil inlet hole; an engine oil filter screen is arranged in the oil separation cavity, and an oil guide channel with one end communicated with the oil separation cavity and the other end communicated with an oil inlet of the engine oil pump is arranged on the side of the oil separation cavity.

The invention discloses a hydraulic speed regulation control system of a feed pump turbine valve, which comprises a regulating valve control unit, and the regulating valve control unit comprises a regulating valve hydraulic control block and a regulating valve hydraulic servo-motor. A servo valve, a filter, a hydraulic control one-way valve, a differential pressure type plug-in loading and unloading valve, an upper plug-in stop valve, a lower plug-in stop valve, a quick-closing electromagnetic valve, a first pressure oil channel, a first oil discharge channel and a safety oil channel are fixed in the adjusting valve hydraulic control block. The safety oil duct is connected with the first pressure oil duct and the differential pressure type plug-in loading and unloading valve. The quick-closing electromagnetic valve is connected in parallel between the safe oil duct and the oil discharge channel I; an oil inlet of the servo valve is communicated with the filter, a control oil port is connected with the differential pressure type plug-in loading valve through the hydraulic control one-way valve, and the differential pressure type plug-in loading valve is connected with the lower plug-in stop valve; and the regulating valve hydraulic servo-motor is respectively connected with the upper cartridge stop valve and the lower cartridge stop valve. According to the system, the servo valve and the filter element can be replaced on line, and the technical problem that the servo valve and the filter element cannot be replaced on line in an existing regulating valve speed regulating system is solved.

An environment-friendly high-precision electric pressurizing oil cylinder comprises an electric cylinder body, an oil cylinder and a hydraulic cylinder, the hydraulic cylinder is fixedly installed at the bottom of the electric cylinder body, the oil cylinder is fixedly installed on one side of the hydraulic cylinder, the hydraulic cylinder comprises a cylinder body, a piston body and a piston rod, and the piston body is slidably installed in the cylinder body; the piston body divides the cylinder body into an upper cavity and a lower cavity which are not communicated with each other, an oil inlet communicated with the upper cavity is formed in the cylinder body, the piston rod is fixedly installed at the bottom end of the piston body, the oil cylinder comprises a shell, a one-way valve and an electromagnetic valve, an oil return opening is formed in the top end of the shell, and an oil outlet is formed in the bottom of the shell. An electromagnetic valve is fixedly installed in the oil return opening, and a one-way valve is fixedly installed in the oil outlet. Due to the arrangement of the hydraulic cylinder and the oil cylinder, the hydraulic cylinder can provide larger pressure relative to the air cylinder, the positioning precision is higher, the oil cylinder replaces a large hydraulic station system to control the hydraulic cylinder, and the characteristics of high bearing capacity, high precision, long service life and the like are achieved.

The invention provides a PCU pressure control module and a control method thereof, and relates to the technical field of pressure control, the PCU pressure control module comprises a power supply module and a hydraulic module, the hydraulic module is provided with a first oil inlet and a second oil inlet, a first main path is provided with a pressure increasing valve I, a second main path is provided with a pressure increasing valve II, and the oil outlet end of the first main path is provided with a first oil outlet; a balance oil way is arranged between the inlet end of the first main way and the inlet end of the second main way, a balance valve is arranged on the balance oil way, a pressure sensor is arranged at the tail end of the balance oil way, a first branch is arranged on the first main way in a communicating mode, a second branch is arranged on the second main way in a communicating mode, and a first pressure reducing valve is arranged on the first branch. The second branch is provided with a second pressure reducing valve, the oil outlet end of the first branch and the oil outlet end of the second branch communicate with the output oil way, the oil outlet end of the output oil way is provided with a second oil outlet, and the power supply module is used for supplying power to the hydraulic module. The defects that in the prior art, pressure adjustment is not accurate, and response lags behind are overcome.

The invention provides a hydraulic retarder system and method and a vehicle with the hydraulic retarder system. The hydrodynamic retarder system comprises a hydrodynamic retarder, a hydraulic control system and a control system, wherein the hydrodynamic retarder is provided with a retarder working cavity; a third oil inlet of the oil guide device is communicated with a second oil outlet of the retarder working cavity, and a third oil outlet of the oil guide device is communicated with a second oil inlet of the retarder working cavity; a fourth oil inlet of the heat energy conversion device is communicated with a fifth oil outlet of the oil liquid guide device, a fourth oil outlet of the heat energy conversion device is communicated with a fifth oil inlet of the oil liquid guide device, and the heat energy conversion device is electrically connected with external equipment. And the heat energy conversion device is used for converting heat energy generated by the hot oil into electric energy for external equipment to use. The energy utilization efficiency of the system is improved, remarkable economic and environmental benefits are brought, and the problem that in the prior art, the braking torque gear of the hydraulic retarder is difficult to meet the requirements under different working conditions is solved.

The invention relates to the technical field of tractor hydraulic control, in particular to a tractor hydraulic lifting system capable of achieving automatic limiting and a tractor. An oil inlet of a lifting electromagnetic valve communicates with a port P of a multi-way output valve, and an oil outlet of the lifting electromagnetic valve communicates with an oil inlet of a lifting oil cylinder; an oil outlet of the lifting oil cylinder is communicated with an oil inlet of the descending electromagnetic valve, and an oil outlet of the descending electromagnetic valve is communicated with a port R of the multi-way output valve; an oil inlet of the pressurizing electromagnetic valve is communicated with a port P of the multi-way output valve, an oil outlet of the pressurizing electromagnetic valve is communicated with an oil inlet of the limiting rod oil cylinder, an oil outlet of the limiting rod oil cylinder is communicated with an oil inlet of the floating electromagnetic valve, and an oil outlet of the floating electromagnetic valve is communicated with a port P of the multi-way output valve. The hydraulic limiting three-point suspension system has the beneficial effects that the automation degree of the tractor is greatly improved, the three-point suspension stability of the tractor in the transition process, the turning-around process and the like is greatly improved, and therefore the comfort degree of the whole tractor is improved.

The utility model discloses a hydraulic valve group and system for controlling a power head to axially float along with threads, and relates to the technical field of hydraulic control, two oil inlets of a shuttle valve are arranged close to a third oil port and a fourth oil port and are respectively communicated with a first oil way and a second oil way, a port I of a two-position three-way manual valve is communicated with an oil drainage port, and a port II of the two-position three-way manual valve is communicated with an oil drainage port. When the two-position three-way manual valve keeps the spring position, a first port and a second port of the two-position three-way manual valve are communicated, pilot ports of the two hydraulic control one-way valve sets are connected in parallel and return oil through the first port of the two-position three-way manual valve, the two hydraulic control one-way valve sets are closed, and the two hydraulic control one-way valve sets return oil through the second port of the two-position three-way manual valve. When the two-position three-way manual valve is switched to the locking position, the third port and the second port of the two-position three-way manual valve are communicated, the pilot ports of the two hydraulic control one-way valve sets are both communicated with the second port of the two-position three-way manual valve, and the two hydraulic control one-way valve sets are opened. The service life of the power head main shaft and the drill rod can be prolonged.

The utility model discloses a hydraulic control valve which comprises a valve body, an oil pump and a conversion check valve. A gear shifting oil cavity is formed in the valve body, a slidable gear shifting piston is installed in the gear shifting oil cavity, and the moving positions of the gear shifting piston comprise the low-speed gear position and the high-speed gear position. Working oil passing through the low-gear oil inlet can apply pressure to one end of the gear shifting piston, and the engine can apply pressure to the other end of the gear shifting piston through the oil pump. The shift piston is controlled to move through pressure at two ends of the shift piston; when the gear shifting piston is kept at the high-gear position, working oil can enter the high-gear oil inlet of the gearbox only through the high-gear oil outlet by switching the check valve. By means of the arrangement, the defects of an original hydraulic downshift control mechanism are overcome, interlocking of gears and the rotating speed of an engine is achieved, and it is guaranteed that the gear shifting process is stable and smooth, and continuous power output is achieved.

The invention discloses a double-clutch hydraulic reversing system and a control method, and belongs to the technical field of paddy field power mechanical gearboxes. Comprising a double-clutch hydraulic reverser, a reversing valve, an oil supplementing pump and a belt pulley, the oil supplementing pump, the reversing valve and the double-clutch hydraulic reverser form oil way circulation, and the oil supplementing pump sucks hydraulic oil stored in the double-clutch hydraulic reverser and supplies oil to the double-clutch hydraulic reverser through the reversing valve; the belt pulley is connected with an input shaft of the double-clutch hydraulic commutator; the double-clutch hydraulic reverser comprises a double-clutch area A and a double-clutch area B. The reversing valve supplies oil to corresponding oil inlets of the double-clutch hydraulic reverser through reversing signals so as to control combination of the double-clutch area A or the double-clutch area B of the double-clutch hydraulic reverser and drive an output shaft of the double-clutch hydraulic reverser to rotate forwards or backwards. The whole structure is simple, double-clutch reversing is convenient, the transmission efficiency reaches up to 92%-93%, and the working efficiency is remarkably improved; lubricating and heat dissipation are carried out through oil liquid, and durability is far higher than that of an electromagnetic clutch.

The present invention discloses a grease injection system for a plug valve and a fracturing device. The grease injection system is used to inject grease into the plug valve. The grease injection system includes a power mechanism and a flow control valve group. The power mechanism includes a driving motor, a hydraulic pump, and a hydraulic oil tank. The driving motor is connected to the hydraulic pump. The hydraulic pump has an oil inlet and a plurality of oil outlets. The oil inlet is communicated with the hydraulic oil tank. The flow control valve group includes a valve body and a control valve. The valve body has a first oil passage port, a second oil passage port, and a third oil passage port. The first oil passage port is communicated with the second oil passage port. The second oil passage port and the third oil passage port are communicated with one or more of the oil outlets. A control valve is arranged between the first oil passage port and the third oil passage port to control the communication or disconnection between the first oil passage port and the third oil passage port. The above solution can solve the problem of great difficulty in injecting grease into the plug valve.

The invention discloses an in-situ detection device and system for dissolved gas in insulating oil. The device comprises an oil chamber, a pipe body and an oil-gas separation structure. An oil inlet is formed in the wall face of the oil chamber, and two oppositely-arranged lenses are further arranged on the wall face of the oil chamber. The pipe body is arranged in the oil chamber, two ends of the pipe body are respectively hermetically connected to the two lenses, and holes are formed in the side part of the pipe body. And the oil-gas separation structure is used for separating dissolved gas from the insulating oil and enabling the dissolved gas to enter the pipe body from the holes. After the oil inlet of the oil chamber is communicated with the oil sampling valve of the to-be-detected oil-immersed power equipment, insulating oil enters the oil chamber, and dissolved gas in the insulating oil is separated by the oil-gas separation structure and enters the pipe body from the hole, so that the dissolved gas interacts with laser emitted into the pipe body from a lens, and the laser is emitted into the pipe body from the lens. A Raman scattering signal capable of reflecting the concentration of each component of the gas is generated and is transmitted to the other lens through the tube body to be ejected out for detection, so that the in-situ high-sensitivity detection of the dissolved gas in the insulating oil is realized.

The utility model discloses a lubricating system of a gas turbine generator set and the gas turbine generator set, and relates to the field of power generation equipment. According to the lubricating system of the gas turbine generator set, the gas turbine generator set comprises a gas turbine, a generator and a gear box; the lubricating system comprises an oil tank, a main oil pump, an emergency oil pump, a first lubricating oil way and a second lubricating oil way, the oil inlet ends of the first lubricating oil way and the second lubricating oil way communicate with an oil outlet of the oil tank, the oil outlet end of the first lubricating oil way communicates with an oil inlet of the oil tank, and the oil outlet end of the second lubricating oil way is connected to the first lubricating oil way. The main oil pump is arranged on the first lubricating oil way. The emergency oil pump is arranged on the second lubricating oil way. The first lubricating oil way is used for being connected with the gas turbine, the generator and the gearbox, and the joint of the second lubricating oil way and the first lubricating oil way is located in the upstream area of the gas turbine, the generator and the gearbox. The problem that normal operation of a lubricating system is affected by oil pump faults can be solved.

The invention relates to the technical field of hydraulic mechanical transmission, in particular to a hydraulic torque converter assembly, a vehicle and a control method. The hydraulic torque converter assembly comprises a hydraulic torque converter, a pressure adjusting assembly and a rotating direction adjusting assembly, wherein the hydraulic torque converter is provided with an output shaft; the pressure adjusting assembly is connected to an oil inlet of the hydraulic torque converter and used for adjusting the pressure of the oil inlet of the hydraulic torque converter. The rotating direction adjusting assembly is connected with the output shaft and used for changing the rotating direction of the output shaft. When a vehicle goes down a long slope, the rotation direction of the output shaft is changed through the rotation direction adjusting assembly, the requirement for long-time retarding braking of the vehicle is met through the reverse rotation characteristic of the torque converter, compared with traditional reverse transmission braking, higher braking torque can be provided, and due to the fact that the pressure of an oil inlet of the hydraulic torque converter is adjustable, automatic adjustment can be conducted according to different braking torque requirements; and different slope requirements when the vehicle goes down a long slope working condition are met.

The utility model discloses a novel turbocharger which comprises a gas compressor volute, a bearing body and a turbine box. The left end and the right end of the bearing body are in sealed connection with the gas compressor volute and the turbine box correspondingly. Two full-floating bearings are arranged in the bearing body; a turbine rotating shaft is pivoted in the full-floating bearing; the upper part of the bearing body is provided with a bent oil inlet channel; an oil inlet formed in the lower end of the oil inlet channel communicates with a top opening in the left end of the lubricating oil way. An oil return cavity is formed in the lower part of a shell of the bearing body; an oil return hole is formed in the bottom of the oil return cavity; and a water cooling cavity is formed in the bearing body. The supercharger is provided with the oil return cavity and the water cooling cavity, the two ends of the water cooling cavity are connected with the water inlet and the water outlet, the internal space can be effectively utilized, the structure is more compact, the efficient heat dissipation effect can be achieved in the limited space, and the overall space of the supercharger is saved; according to the utility model, the problems of incompact structure, large volume and the like of the water-cooling row can be solved, and the effects of compact structure and small volume are achieved.

The invention discloses an overflow valve with an overpressure protection function, and belongs to the technical field of overflow valves, the overflow valve comprises a valve body, an oil inlet and an oil outlet are formed in the valve body, a communication cavity is formed in the valve body, a valve core is sleeved in the communication cavity, a damping hole is formed in the valve core, and a pressure plug is arranged in the valve body. When the damping hole is blocked, the driving block is driven by the up-down pressure difference of the valve element to extend out at a constant speed, the rotating rod and the threaded strip are driven to do multidirectional compound motion such as forward rotation, ascending, descending and reverse rotation in the damping hole, the shearing effect of full-circumferential covering is generated in the damping hole, sediments in the damping hole are cut and refined, and the damping effect is improved. Turbulent flow accelerated conveying is matched, secondary sedimentation is avoided, the efficient dredging effect on the damping hole is achieved, the vertical pressure difference of the valve element is eliminated in time, oil way pressure is responded and unloaded in time through the pilot valve, and damage to a mechanical structure caused by too large pressure is avoided.

The utility model belongs to the technical field of filters, and relates to a top-mounted fuel filter, which comprises a shell, an oil inlet, an oil outlet and an exhaust oil return hole arranged at the bottom of an inner cavity of the shell; the exhaust pipe is in threaded connection with the exhaust oil return hole and extends upwards in the axial direction of the shell; the filter element assembly is installed in the shell, the exhaust pipe extends to an upper end cover of the filter element assembly along an inner hole of the filter element assembly, and the outer circumferential surface of the upper end of the exhaust pipe is in sealing fit with the inner wall of the inner hole of the upper end cover; the upper cover is in threaded connection with the shell, and the upper cover is in sealing fit with the shell; the filter element assembly further comprises an upper end cover protective cap and a felt ring, and a main exhaust hole is formed in the center of the upper end cover. The filter not only can effectively solve the gas collection phenomenon and enable an engine to operate more stably, but also can reduce the cost of replacing the filter element during maintenance as the exhaust pipe is designed and mounted on the shell.

The invention discloses a hydro-generator outer circulation bearing lubricating oil heating system, and belongs to the technical field of hydro-generator set bearing lubrication. The problems that in the prior art, rapid temperature rising cannot be achieved, heating is uneven, and dry burning is caused are solved. According to the technical key points, the constant-temperature heating module, the PID controller and the interlocking system are all arranged in the outer circulation unit, and the porous ring pipe structure is arranged in a bearing oil groove; an oil inlet of the oil inlet pipeline extends into the bottom of the bearing oil groove and is connected with a cold oil input ring pipe; an oil outlet of the oil outlet pipeline extends into the bottom of the bearing oil groove and is connected with a hot oil output ring pipe; and the arrangement height of the constant-temperature heating module is lower than the lowest oil level surface of the bearing oil groove. Space in the oil groove is not occupied, maintenance is convenient, the heater achieves oil return sealing of lubricating oil gravity, and oil cut-off and dry burning of the heater are avoided; cold oil in the bearing oil groove is evenly sucked in, hot oil is evenly sprayed out, lubricating oil in the bearing oil groove is evenly heated, and the temperature stratification phenomenon is avoided.