3860 results about "Oil pump" patented technology

The invention relates to an aircraft electric drive oil cooling structure which comprises an outer rotor assembly, a stator assembly, a controller assembly, an oil pump and a heat dissipation assembly, the stator assembly comprises a stator shell and a winding, a sealing cover is further fixed to the outer side of the winding, and a cooling cavity is formed between the sealing cover and the stator shell; a bottom plate is further arranged at the bottom of the stator shell, the controller assembly is fixed in a mounting cavity formed by the bottom plate and the stator shell and comprises a circuit board and a cooling plate which are close to each other, the circuit board is connected with the winding, an oil duct A is further arranged on the bottom plate, an oil inlet pipe and an oil outlet pipe are arranged on the cooling plate, and an oil duct B communicated with a cooling cavity is further arranged on the bottom plate; the heat dissipation assembly comprises a heat dissipation fin set and a fan assembly, the heat dissipation fin set and the oil pump are both fixed to the lower portion of the bottom plate, heat dissipation fins form a ring and are arranged outside the oil pump in a surrounding mode, the heat dissipation fin set, the oil pump and the bottom plate are communicated with one another, and the fan assembly is fixed to the lower portion of the heat dissipation fin set. Efficient, light-weight, high-integration-level and reliable heat dissipation of the electric drive of the aircraft is achieved.

A vehicle drive device includes a rotating electric machine disposed on a first axis, an output gear mechanism and an output member disposed on a second axis, and a case that houses these elements. The second axis is disposed below the first axis, a suction port of an oil pump is disposed below the first axis and the second axis and between the first axis and the second axis in a width direction, an outermost gear is disposed so that a direction of rotation at a lower end portion of the outermost gear during forward movement of a vehicle points toward the suction port, and a part of a peripheral wall section of the case that faces a lower surface of the rotating electric machine is inclined downward toward the suction port.

The invention discloses a ship key equipment impact type fault interpretable detection method based on wavelet scattering and time-frequency feature enhancement, and belongs to the field of ship equipment fault detection. According to the method, a vibration signal of ship key equipment is acquired through a sensor, and the vibration signal is converted into a time-frequency image with cross-domain consistency by adopting improved wavelet scattering transform; adaptive enhancement processing based on statistical features is carried out on the time-frequency image to realize noise suppression and fault feature enhancement; and inputting the processed time-frequency image into a pre-training model embedded with class activation mapping to complete fault identification and decision process visualization. Aiming at the impact type fault detection requirement of the ship key equipment, the method solves the problems that a traditional method is weak in generalization ability and cannot explain the diagnosis result, has the advantages of being high in detection precision, high in adaptability and traceable in diagnosis result, and can be widely applied to bearing fault detection of key equipment such as a ship main lubricating oil pump, an oil separator and a turbine.

The utility model discloses a hydraulic logic control system for a sidesway distance adjusting fork. Comprising an oil pump, a safety valve, a first reversing valve plate, a logic control valve block, a first hydraulic control one-way valve, a first three-way pipe, a right pallet fork distance adjusting oil cylinder, a left pallet fork distance adjusting oil cylinder, a first overload valve, a second hydraulic control one-way valve, a second three-way pipe, a third three-way pipe, a third hydraulic control one-way valve, a throttling valve, a second reversing valve plate and a second overload valve. The logic control valve block comprises a second hydraulic control one-way valve, a third hydraulic control one-way valve, a throttling valve and a second overload valve, and the second hydraulic control one-way valve, the third hydraulic control one-way valve, the throttling valve and the second overload valve are communicated through pipelines. And the first reversing valve plate is communicated with the second reversing valve plate. According to the hydraulic logic control system for the laterally-moving distance adjusting fork, the purpose of hydraulic oil way regulation and control is achieved through the arrangement of the structure.

The invention relates to the technical field of titanium alloy investment precision casting, and particularly provides a titanium alloy multistage deep blind hole investment casting method which comprises the following steps: designing an exhaust hole and a slag removal hole; establishing a model; assembling and welding; soaking the surface layer in a vacuum negative pressure environment, continuously vacuumizing, deflating after soaking, taking out the module, and rotating to uniformly control the slurry; preparing a surface layer; performing segmented grouting on the deep blind hole; making a shell from a back layer; roasting and molding; washing and drying; pouring is conducted; shell cleaning and sand blasting; sealing and welding the process holes; and performing stress relief annealing. And a dynamic vacuumizing means is adopted, and a vacuumizing device is always kept in an open state, so that the compactness of a surface layer is improved, and burrs of a casting are reduced. Through vacuum dynamic slurry immersion, segmented grouting and collaborative design of the exhaust hole and the slag removal hole, investment precision casting forming of the high-precision oil pump shell can be supported, the shell manufacturing efficiency of the multi-stage deep blind hole is improved, and the filling defect rate is reduced.

According to the motor, the power system based on the motor and the adjusting method, convex ribs are arranged on an end plate of a rotor, the rotor is used for driving the convex ribs to rotate and driving cooling lubricating oil to form forced circulation in an air gap, the heat transfer efficiency of the rotor and a stator is remarkably enhanced, and the temperature rise of the rotor and the demagnetization risk of a permanent magnet are effectively controlled; meanwhile, the lubrication condition of moving parts is improved, and energy consumption and complexity caused by an extra oil pump are avoided; through the integrated design of the motor shell and a half box body of the gear box and the communicating oil duct of the sealing plate and the gear box, a shared lubricating system is constructed, cooling lubricating oil circulation sharing and heat dissipation cooperation are achieved, the overall structure is simplified, and the system reliability is improved; on the premise that the size and the weight are not increased basically, the comprehensive benefits of improving the heat dissipation performance, simplifying the system structure and reducing the manufacturing cost are synchronously achieved, and the power module is particularly suitable for application scenes with limited space and high power density requirements.

The utility model relates to the technical field of beam-pumping units, in particular to a horsehead receding device of a pumping unit. Comprising a horse head rotationally connected with one end of a walking beam, the horse head comprises two side plates fixedly connected, two lug plates are fixed between the two side plates and fixedly connected through a vertical rotating shaft, the rotating shaft is rotationally connected with one end of the walking beam, a square rod is arranged on the walking beam in a sliding mode, and a telescopic rod can drive the square rod to slide. A fixing rod is fixed to the lower end of the square rod, a push rod is fixed to the lower end of the fixing rod, a rack is fixed to the end, away from the fixing rod, of the push rod, and a gear ring is concentrically and fixedly arranged on the rotating shaft in a sleeving mode. The electric telescopic rod drives the square rod to slide, manual climbing operation is not needed, and potential safety hazards of climbing operation in a traditional device are thoroughly eliminated.

The utility model relates to the technical field of oil cooling motor structures capable of rapidly reducing oil temperature, and discloses an oil cooling motor structure capable of rapidly reducing oil temperature, which comprises a bottom plate and a motor main body, a rapid oil temperature reducing assembly is arranged at the top of the bottom plate, and the rapid oil temperature reducing assembly comprises an oil pump, a circulating pump, a fan frame and radiating fins. The oil pump is connected with an oil tank through an input pipe, the oil pump is connected with a cooling oil disc through an output pipe, and through the arrangement of the rapid oil temperature reducing assembly, a worker starts the oil pump, pumps cooling oil from the oil tank and injects the cooling oil into the cooling oil disc, the cooling oil disc is attached to the outer wall of the motor body, operation heat is absorbed, the motor is prevented from being overheated, and stable operation is guaranteed; the circulating pump pumps out hot oil from the cooling oil tray and feeds the hot oil into the heat dissipation pipe, the heat dissipation fins on the heat dissipation pipe increase the heat dissipation area and cooperate with the fan in the fan frame to accelerate heat dissipation, the cooled oil returns to the oil tank through the return pipe, efficient circulation of the cooling oil is achieved, and the motor is continuously cooled.

The utility model provides a Roots blower with a double-oil-pump circulating cooling device, which comprises a Roots blower main body and the double-oil-pump circulating cooling device, the Roots blower main body comprises an oil tank, a driving end wall plate and a non-driving end wall plate, and the double-oil-pump circulating cooling device comprises a first oil pump, a second oil pump and a cooler. The oil tank communicates with the first oil pump and the second oil pump, the first oil pump and the second oil pump are connected in parallel, and the rear ends of the first oil pump and the second oil pump are connected with the driving end oil pipe assembly, the gear end oil pipe assembly and the non-driving end oil pipe assembly correspondingly to lubricate and cool the driving end bearing, the non-driving end bearing, the driving gear and the driven gear correspondingly. The first oil pump and the second oil pump can independently operate to achieve circulating cooling of lubricating oil, when one oil pump breaks down, the other oil pump can be switched to operate in the non-stop state, and long-time stable operation of the air blower is guaranteed. The circulating cooling device can be widely applied to circulating cooling of the roots blower.

A sound-recognition-based method for monitoring an operating condition abnormity of an oil pump electric motor and outlet pipes thereof. Applying soundprint recognition technology to a speed-regulating hydraulic system of a hydropower station, and rational layout of on-site soundprint sensors realize real-time monitoring of operating conditions of an oil pump electric motor and outlet pipes thereof, thereby improving the intelligence level of device management, and achieving an industrial demonstration effect. By means of deep learning analysis of a soundprint fault sample library combined with multi-dimensional factors such as pressure, liquid level and temperature, a soundprint-recognition-based multi-dimensional-factor logical determination process for abnormal operating conditions of an oil pump electric motor and outlet pipes is designed, such that real-time monitoring and rapid locating of abnormal operating conditions such as base vibration, lubricating oil deficiency in an oil pump electric motor, pump body blade fracture, check valve malfunction, incomplete closure or internal leakage of a drain valve, frequent loading and unloading of an oil pump, and servomotor pipe pulsation are realized, so as to promptly use response measures such as automatic switching of main and standby oil pump electric motor units or automatic adjustment of unit load. Using soundprint sensors and soundprint recognition technology to monitor the state of on-site devices in real time eliminates uncertainties in manual inspection, and improves the fault diagnosis and analysis efficiency.

Disclosed is an oil spray bottle, including an oil storage container, a shroud shell and an oil pumping module. In order to facilitate the pouring of oil into the oil storage container, the oil storage container is designed to be capable of being detached from the oil pumping module, the oil storage container is in threaded connection with the oil pumping module, that is, an external thread is formed at an opening of the oil storage container, and an inner thread is formed on an inner wall of the oil pumping module; and in order to hide the oil pumping module, improve its aesthetics and enable a user to hold the oil spray bottle easily, the shroud shell is fixed to an outside of the oil pumping module.

The invention relates to the technical field of die-casting machines, in particular to a die-casting machine rapid energy storage device, a control method and a die-casting machine, the energy storage device comprises a control unit, an oil supply unit, an energy storage unit, a first pressure collection unit used for collecting the output pressure of the oil supply unit, and a second pressure collection unit used for collecting the internal pressure of the energy storage unit; the control unit is respectively connected with the first pressure acquisition unit and the second pressure acquisition unit; the oil supply unit is communicated with the energy storage unit to convey hydraulic oil; the control unit is configured to control the oil supply unit to be in a speed control mode in the energy storage stage of the die-casting machine so that the oil supply unit can operate according to a preset speed instruction, and meanwhile, according to the first pressure value of the first pressure collection unit and the second pressure value of the second pressure collection unit, a pressure control instruction output to the oil supply unit is adjusted in real time. Therefore, the energy storage stage time of equipment is shortened, the production period of the equipment is relatively shortened, and the speed ring and the pressure ring of the servo oil pump are used in cooperation.

The invention discloses an electromagnetic and hydraulic combined bulging and correcting method for a pipe plate. The method comprises the steps of 1, feeding treatment, 2, electromagnetic pre-activation treatment, 3, hydraulic precise bulging treatment, 4, pressure maintaining and shaping treatment, 5, electromagnetic and hydraulic collaborative correcting treatment and 6, material taking and post-treatment. The device comprises a machine frame which is vertically symmetrical and provided with a forming lower die and an opening and closing upper die through a hydraulic oil cylinder, a temperature sensor and a strain gauge are embedded in the lower side in a die cavity, high-frequency induction coils are arranged on the outer surfaces of the forming lower die and the opening and closing upper die, and a pulsed magnetic field generator is embedded in the top in the opening and closing upper die. A liquid injection opening is formed in the side edge of the upper opening and closing mold and is connected with a high-pressure oil pump through a pipeline; a main controller is further arranged on the rack; through a staged coupling process, the deformation resistance during bulging is reduced, elastic recovery is eliminated through cooperative shape correction, meanwhile, the device integrates multiple modules, real-time matching of electromagnetic parameters and hydraulic pressure is achieved, and the device adapts to forming of pipe plates made of different materials and in complex shapes.

The invention relates to a transformer insulating oil sampling device, and belongs to the technical field of transformer oil sampling, the transformer insulating oil sampling device comprises an insulating oil transfer cabinet, a male joint, an oil sampling machine vehicle, an oil well pump and a female joint, a transformer oil sampling hole, the insulating oil transfer cabinet and the male joint are sequentially communicated in series through an oil delivery pipe; the oil-well pump and the female joint are fixed on the oil sampling machine vehicle at an interval; and the pump inlet end of the oil-well pump is communicated with the oil outlet end of the female joint through an oil conveying pipe. The oil inlet hole in the insulating oil transfer cabinet is communicated with the oil taking hole of the transformer through the oil conveying pipe, then the female connector fixed to the oil sampling machine vehicle is in butt joint communication with the male connector fixed to the insulating oil transfer cabinet, the male connector and the female connector can be directly in butt joint communication, the space position adjusting operation is omitted, and the working efficiency is improved. The structure of the transformer insulating oil sampling device is simplified, the risk of collision with the transformer is reduced, and the transformer insulating oil sampling efficiency is improved.

The invention discloses a hydraulic system for preventing reversing cutoff of a cone valve type filling industrial pump. The hydraulic system comprises a first oil pump set, a second oil pump set, a main oil cylinder set, a first pressure valve suction valve oil cylinder set, a second pressure valve suction valve oil cylinder set, a reversing valve set and a pipeline. The first oil pump set is composed of a first oil pump, a second oil pump and a first constant-pressure oil pump set. The second oil pump set is composed of a third oil pump, a fourth oil pump and a second constant-pressure oil pump set. The first pressure valve suction valve oil cylinder set comprises a first pressure valve oil cylinder and a first suction valve oil cylinder, and the second pressure valve suction valve oil cylinder set comprises a second pressure valve oil cylinder and a second suction valve oil cylinder. The reversing valve group comprises first to sixth reversing valves. According to the reversing cutoff prevention hydraulic system of the cone valve type filling industrial pump, through unique structural design and assembly configuration, the cutoff problem in the reversing process is effectively solved, continuous and stable operation of the system is ensured, and the working efficiency and reliability of the industrial pump are improved.

The invention provides a hierarchical dynamic control method and system for an oil pump fault mode, and the method comprises the steps: monitoring an actual oil pressure signal and a plurality of working condition parameter signals of an engine in real time, and carrying out the calculation based on the plurality of working condition parameter signals to obtain a target oil pressure signal; the difference value between the actual engine oil pressure signal and the target engine oil pressure signal is calculated, and whether the difference value is larger than a preset abnormal threshold value or not is judged; if the abnormal value is larger than the preset abnormal threshold value, it is judged that the oil pressure of the engine is abnormal, and whether the oil pressure abnormity belongs to the emergency situation or not is further judged; if the condition does not belong to the emergency condition, triggering early warning of a corresponding level according to the value of the difference value; if the non-highest-level early warning is triggered, the oil pressure state is detected again after preset time, and if the oil pressure is abnormal and still not recovered, a specific fault mode is diagnosed; and according to the diagnosed fault mode, the corresponding preset control strategy is called to control the fully variable oil pump, and the misjudgment rate is reduced.

The invention relates to the technical field of vehicles, and provides a shell structure, a driving system and a vehicle, the shell structure comprises a speed change mechanism mounting cavity and a lubricating oil way, a plurality of bearing mounting holes are formed in the cavity wall of the speed change mechanism mounting cavity, the lubricating oil way comprises a branch oil way, and the branch oil way is communicated with at least one bearing mounting hole. According to the shell structure, oil can be pumped into the branch oil ways through the oil pump, the branch oil ways are supplied to one or more corresponding bearing mounting holes in the speed change mechanism mounting cavity, and bearings in the bearing mounting holes communicated with the branch oil ways can be fully lubricated even under special working conditions. In addition, through the arrangement of the lubricating oil way, the number of lubricating accessories in the speed change mechanism mounting cavity can be reduced, the internal space of the speed change mechanism mounting cavity is saved, the assembly technological process of the driving system is shortened, and the production cost is reduced.

The invention relates to the technical field of electronic oil pumps, in particular to an efficient noise detection mechanism and method for an electronic oil pump, the efficient noise detection mechanism comprises a workbench, and a placement box is fixedly mounted at the top of the workbench. The left end of the oil pump body is aligned with the mounting disc, then the four sets of screws at the top of the mounting disc are sequentially rotated, the screws can drive and push the clamping blocks to slide in the mounting disc when rotating till the four sets of clamping blocks are fixed from an output shaft of the oil pump body, and therefore the oil pump body can be firmly fixed, and displacement during operation is prevented; if the position of the noise sensor needs to be preliminarily adjusted, the noise sensor can be slightly pushed, the noise sensor moves to drive the limiting block to slide in the limiting groove, and the limiting rod can restrain the sliding direction of the limiting block, so that the noise sensor is prevented from deviating and sliding; and the reset spring on the surface of the limiting rod is stretched or compressed along with the movement of the limiting block to form a pre-tightening force, so that the noise sensor can be reset conveniently.

The invention discloses a drilling device for hydraulic ring geological exploration, and particularly relates to the technical field of geological exploration, the drilling device comprises a driving assembly, the driving assembly is provided with a direction adjusting assembly used for adjusting the angle, the direction adjusting assembly is provided with a drilling assembly used for drilling work, and the driving assembly is provided with a feeding adjusting assembly. According to the drilling device for hydraulic ring geological exploration, power is provided for the hydraulic telescopic rod through the hydraulic oil pumping assembly, stable axial feeding of the drilling assembly is achieved, the drilling depth is accurately controlled, the pressure relief assembly monitors the pressure of a hydraulic system in real time, and when the pressure exceeds a set threshold value, the hydraulic telescopic rod is driven to rotate; the electromagnetic ring drives the movable pipe to slide to expose the pressure relief hole, pressure relief is achieved through backflow of hydraulic oil, the situation that the device is damaged due to too large pressure caused by hard rock strata and the like is avoided, the elastic piece pushes the movable pipe to reset to close the pressure relief hole after the pressure is recovered, stable and balanced feeding pressure is guaranteed, self-adaptive pressure adjustment is achieved, and operation safety and reliability are improved.

The invention discloses a rubber O-shaped ring compression stress relaxation test device which comprises an O-shaped ring mounting base, four circles of annular grooves are sequentially formed in the center of the O-shaped ring mounting base from outside to inside, a rubber O-shaped ring is arranged in the fourth circle of annular groove, a gasket is arranged above the rubber O-shaped ring, a force measuring sensor is arranged on the gasket, and the force measuring sensor is connected with the O-shaped ring mounting base. The force measuring sensor is tightly connected with the O-shaped ring mounting base through a fixing piece and a plurality of counterbores; the force measurement sensor is in wireless or wired connection with the data acquisition system; two flow guide holes and a temperature measuring hole are formed in the groove bottom of the second ring of annular groove, a temperature measuring sensor is inserted into the temperature measuring hole, the head of the temperature measuring sensor penetrates into the second ring of annular groove, and the tail of the temperature measuring sensor is connected with a thermodetector through a temperature measuring data connecting line; the oil temperature machine is communicated with the two flow guide holes through an oil conveying pipeline, and an oil pump is arranged on the oil conveying pipeline. The environment temperature of the rubber O-shaped ring can be controlled, and the actual working condition of the rubber O-shaped ring in lubricating oil can be simulated.

The invention relates to the technical field of transformers, in particular to an oil-immersed transformer with a tapping regulating switch, which comprises a main oil tank, an iron core is arranged in the main oil tank, a low-voltage winding is arranged around the outer side of the iron core, a high-voltage winding is arranged around the outer side of the low-voltage winding, and the oil-immersed transformer further comprises an auxiliary oil cylinder, the auxiliary oil cylinder is vertically arranged on the rear side of the main oil tank, and a loading and unloading opening is formed in the top of the auxiliary oil cylinder. The whole switch module, including the switch mounting rack, the tap switch and the sealing cover plate, is safely, stably, cleanly and vertically lifted out of the auxiliary oil barrel as a whole through a hydraulic lifting structure formed by the lifting oil cylinder, and meanwhile, the auxiliary oil barrel is communicated with the lifting oil cylinder through the oil way design; oil pumped out from the bottom of the auxiliary oil barrel directly enters the bottom of the lifting oil cylinder to serve as a pushing medium, internal recycling of the oil is achieved, dependence on large hoisting equipment and a large amount of manpower is reduced, and the tap adjusting switch is more flexible and convenient to maintain.

The invention discloses electric arc welding equipment and method for pin shaft machining, and relates to the technical field of pin shaft machining. The electric arc welding equipment and method for pin shaft machining comprise a welding bin, an electric arc welding device, a welding device and an electric arc welding device, and a placing base is assembled in the welding bin; the rotating part is assembled in the welding bin and is driven by a servo motor, and a movable welding head is assembled at the bottom of the rotating part; a first hydraulic bin connected with the oil pump is assembled in the welding bin. According to the electric arc welding equipment and method for pin shaft machining, a welding bin is opened, a to-be-welded pin shaft is placed in a placing base, an oil pump is driven, oil is introduced into a first hydraulic bin, a partition plate, a first spring, a first transmission rod, a second transmission rod, a sliding plate, a first elastic telescopic rod, a pressing plate, a rotating rod, a hinge rod and a gravity column are matched, and then a shaft base can be stably supported; and the other side of the shaft seat is prevented from tilting during welding, so that the welding effect of the device is improved.

This invention discloses a multi-temperature zone coordinated refrigeration system and energy-saving control method for variable-temperature cold storage, belonging to the field of cold storage temperature control technology. The system includes: calling a dynamic load prediction model based on the acquired initial real-time monitoring dataset to calculate the heat load change trend data for each temperature zone over a preset period; adjusting the electronic expansion valve and generating start-up control commands based on the heat load trend and the temperature and humidity requirements of the goods, starting, stopping, or switching the refrigeration unit to operate the system; activating the central oil circuit management module during system operation to monitor the compressor oil level and compare it with a preset safety threshold to generate oil circuit adjustment commands; starting the intelligent oil pump to deliver oil according to the commands, while using the evaporator outlet superheat or pressure value as a feedback signal to control the electronic expansion valve in a closed loop; and summarizing the data from the actuators and sensors and feeding it back to the central controller to form a closed loop. This invention achieves multi-temperature zone coordinated control, improving refrigeration efficiency and equipment safety, and reducing energy consumption.

The invention discloses a lubricating oil system of an aviation turboprop engine. The lubricating oil system comprises a lubricating oil supercharging device, an oil-gas separation device, a lubricating oil return device, a lubricating oil filtering device, a lubricating oil monitoring device and a connecting guide pipe communicating all the devices. The lubricating oil supercharging device comprises a main lubricating oil pump, an auxiliary lubricating oil pump and a torque measuring pump; the oil-gas separation device comprises a ventilation oil tank, an air separator and an oil mist separator; the lubricating oil return device comprises a lubricating oil tank, a lubricating oil radiator, a middle and rear bearing oil well pump, a transmission box oil well pump and a direct-current electric lubricating oil pump; the lubricating oil filtering device comprises a lubricating oil filter and a middle-rear bearing oil return filter; the lubricating oil monitoring device comprises a temperature metal chip annunciator and a magnetic chip detection annunciator. Appropriate lubricating oil pressure and oil quantity are provided, lubrication and heat dissipation of friction surfaces of parts in an engine are improved, and the use reliability of the engine is improved.

The invention discloses an underground intelligent oil extraction pump and system. The oil extraction pump comprises a plurality of sensors, and an oil pipe, a screw pump, a motor, a gas-liquid separation device and a sand-washable gas anchor which are connected from top to bottom, the sensor is used for collecting underground environment data and motor working state data; the controller is used for acquiring and encoding data acquired by the sensor, receiving a control instruction and sending a corresponding control signal to the motor; the motor drives the screw pump to work according to working parameters indicated by the control signal; the screw pump is used for pumping oil-containing liquid in the well through an oil pipe or pumping cleaning liquid on the well into the well through the oil pipe; the system comprises an underground intelligent oil extraction pump and a ground control cabinet, the ground control cabinet is used for receiving the coded data transmitted by the controller, monitoring the underground working condition and controlling the working state of the motor according to the monitoring result. The oil extraction pump and the system effectively prolong the pump inspection period, save manpower resources, effectively reduce abnormal working conditions in a well, and prolong the service life of the oil extraction pump.

The invention discloses a sealed type safe anti-explosion mining transformer, and belongs to the technical field of transformers. Comprising a machine shell, fins are distributed on the outer wall of the machine shell, a collecting box is fixed to the machine shell, a circulating oil pump is fixedly installed in the collecting box, an oil storage tank is arranged in the collecting box, an oil outlet tank is fixed in the collecting box and connected with the oil outlet end of the circulating oil pump, a filter cartridge is fixedly installed in the oil outlet tank, and the oil storage tank is connected with an oil outlet pipe. The oil outlet pipe is connected with a backflow pipe extending into the oil outlet tank, the backflow pipe is rotationally connected with a back-flushing block located on the inner side of the filter cartridge, the back-flushing block is provided with a back-flushing groove facing the inner wall of the filter cartridge, and one-way valves are arranged in the oil outlet pipe and the backflow pipe. The sealed type safe anti-explosion mining transformer has the beneficial effects that through the arrangement of the oil storage tank, when oil in the machine shell expands at high temperature, and the pressure in the machine shell is increased, the oil is pumped out of the machine shell and then enters the oil storage tank, and the pressure in the machine shell is reduced.

The invention discloses an expansion generator set system and method for black start of a compressed air energy storage power station. The expansion generator set system is mainly composed of an air expansion machine, a generator, a starting valve, a hydraulic control valve, an anti-wear hydraulic oil pump, an anti-wear hydraulic oil tank, a speed change gear box and various pipelines. The air expansion machine can selectively and directly drive the generator and the anti-wear hydraulic oil pump, and can output mechanical work to the generator and the anti-wear hydraulic oil pump after speed change of the speed change gear box. Rotor supports of the expansion machine, the generator and the oil pump all adopt rolling bearings, so that lubricating oil station configuration is eliminated or related power consumption is reduced. The rotating speed of the expansion generator set can reach 90% when the starting valve is fully opened in the impulse rotating process, and the hydraulic control valve connected with the expansion generator set in parallel needs to be used for precise and quick response control of the rotating speed and the power required by follow-up grid connection. The black start requirement of compressed air energy storage power stations of 100 MW and higher power levels can be met, and the whole machine is simple in structure, high in reliability and easy to maintain.

The invention relates to the technical field of cutting fluid filtering, in particular to a cutting fluid filtering machine for a machine tool, which comprises a filter, a storage box arranged on the machine tool and used for storing cutting fluid, and a pumping and draining pump set arranged on the filter and used for pumping and draining the cutting fluid, side strips are fixedly connected to the two sides of the inner wall of the storage box, and a transverse moving frame is arranged on the storage box; the two ends of the side wall of the transverse moving frame are fixedly connected with L-shaped frames. The transverse moving frame is only needed to be placed on the cutting fluid storage box of the machine tool, then the position of the electric driving wheel is locked through the clamping mechanism, the main pipe can be automatically driven to move at the bottom of the storage box, automatic extraction of cutting fluid and waste residues is achieved, the main pipe can be driven to automatically move at the bottom of the storage box, and the machining efficiency is improved. And a floating oil extraction mode can be quickly converted, floating oil on the upper surface of the cutting fluid is extracted and filtered, the flexible performance of the device is improved, and workers do not need to hold the device all the time to extract the floating oil.

The utility model discloses a novel lubricating pump oil outlet structure capable of adjusting the oil outlet amount, and relates to the technical field of lubricating pumps. The pump body is in threaded fit with the adjusting valve element seat, and the adjusting valve element seat is fixedly connected with the hexagon nut, so that after the hexagon nut is rotated, the valve element is driven to rotate clockwise or anticlockwise so as to adjust the size of the quantitative cavity, and the requirement for flexible adjustment of the oil outlet amount is met; according to the oil pump, the motor drives the cam to rotate and drives the pump core to do reciprocating motion, when the pump core moves rightwards, oil in the quantitative cavity is pushed, so that the valve element is pushed, finally, the oil in the quantitative cavity reaches an oil outlet channel through a through hole of an oil receiving groove of the valve element to be discharged, and when the cam is far away from the pump core, a reset spring of the pump core resets the pump core. And meanwhile, the valve element spring is adjusted to reset the valve element, at the moment, the oil inlet of the pump body sucks oil from the oil tank to fill the quantitative cavity, and the next oil outlet action of the pump element continues to be waited.

The invention discloses an engine oil temperature control lubricating system for a hybrid electric vehicle, and belongs to the field of engine lubricating systems. Comprising a main oil duct, an engine oil pan, an engine oil pump and an oil duct pipe set, the engine oil pan is used for storing engine oil, the engine oil pump is used for pumping the engine oil in the engine oil pan, and the oil duct pipe set communicates with the engine oil pump and the main oil duct and comprises a first oil duct and a second oil duct which are arranged in parallel; the heater is opened to heat engine oil flowing through the first oil duct when the engine oil temperature is lower than a second preset temperature, and is closed when the engine oil temperature is higher than or equal to the second preset temperature; and the second oil duct comprises a second temperature control valve, and the second temperature control valve is opened when the temperature of the engine oil is larger than or equal to the second preset temperature, so that the engine oil further flows into the main oil duct through the second oil duct. When the engine of the hybrid electric vehicle is in cold start, the temperature of the engine oil can be rapidly increased through the heating piece, so that abnormal sound and abrasion of the engine when the temperature of the engine oil is too low can be well improved.