6270 results about "Oil pump" patented technology

A system for fracturing a subsurface formation may comprise a transport unit with hydraulic legs, an electric motor mounted on the transport unit, a fracking pump mounted on the transport unit and configured to be powered by the electric motor, and an oil tank mounted on the transport unit such that the motor and the fracking pump are above the oil tank. The oil tank may have a first tank height under the pump and a second tank height under the motor and the first tank height may be greater than the second tank height. The oil tank, motor support beam, and pump support beam may form a single structural unit. The system may also include an oil pump for pumping lubricating oil through the fracking pump, an electric motor configured to drive the oil pump, a variable frequency drive configured to control the electric motor.

The invention relates to a method for controlling the oil supply device of an automatic planetary transmission, comprising a main oil pump (HP), which is mechanically drivably connected to the drive shaft of an internal combustion engine (VM), and an auxiliary oil pump (ZP) that may be driven via a controllable electric motor, the automatic transmission (ATG) being part of a parallel hybrid powertrain of a motor vehicle having an input shaft (5), which may be connected via a separating clutch (K) to the drive shaft (2) of the internal combustion engine (VM) and is permanently drivably connected to the rotor (4) of an electric machine (EM).

In order to achieve an oil supply to the automatic transmission (ATG) as and when needed, it is provided that the current oil requirement (P_{HD<sub2>—</sub2>soll}) of the automatic transmission is determined as a function of at least one currently captured operating parameter, and that the delivery rate (P_ZP) of the auxiliary oil pump (ZP) is set, by a correspondingly actuation of the associated electric motor, in the combustion and combined driving mode below a minimum input speed of the main oil pump (HP) and in the electric driving mode to at least the total oil requirement, and at least in the combined driving mode above the minimum input speed of the main oil pump (HP) is set to at least the residual oil requirement exceeding the delivery rate (P_HP) of the main oil pump.

The invention provides a quantitive type experimental device for dynamic and static performances of a static-pressure rotary table, and belongs to the field of machinery design and manufacture. According to the experimental device, a loading device (5) and a loading arm (6) are used for changing magnitude of loads or changing oil supply pressure to control the distance between a static-pressure oil cushion (10) and a rotary table disc chuck (7), a pressure sensor (12) is used for measuring pressure in an oil cavity, an eddy current displacement sensor (11) is used for measuring the thickness of an oil film, a thermocouple temperature sensor (3) is used for measuring oil temperature, a force sensor (4) is used for obtaining magnitude of loading force, a pressure gauge a (15) on a multi-head pump at an oil inlet in the oil cavity is used for measuring pressure of the oil inlet of the oil cavity, and a pressure gauge b (16) arranged between an oil pump and the multi-head pump is used for measuring the oil supply pressure of the static-pressure rotary table. By means of the experimental device, a test of the dynamic and static performances of the static-pressure rotary table is carried out under the condition that temperature is between minus 10 DEG C and 60 DEG C and pressure is not more than 100 MPa, and the experimental device provides guarantee for solving problems in engineering, optimizing structural parameters of the rotary table, and improving machining precision of the rotary table.

The invention relates to an automatic pressing-filling device for steel balls. The automatic pressing-filling device is characterized by comprising a base and a support, wherein a workpiece conveying mechanism is installed on the base, and a workpiece clamping mechanism, a steel ball sorting and conveying mechanism and a steel ball pressing-in mechanism are installed on the support; the workpiece conveying mechanism is used for loading and conveying a workpiece, the workpiece clamping mechanism is used for fixing the workpiece which is conveyed in place, the steel ball sorting and conveying mechanism is used for conveying the steel balls to the workpiece, and the steel ball pressing-in mechanism is used for pressing the steel balls in the workpiece. The automatic pressing-filling device for steel balls disclosed by the invention is ingenious, compact and reasonable in structure, accurate in pressing-fitting and positioning, convenient in installation and maintenance, capable of automatically conveying the steel balls and accurately pressing-filling the steel balls in the workpiece of an oil pump shell, thus improving the quality stability of a positioning and pressing-filling process for the steel balls in the oil pump shell, lightening the working intensity of operating personnel, and improving the labour production efficiency; therefore, the quality of pressing-filling for the steel balls of the oil pump shell meets the requirements of a process assembly standard.

The invention relates to an electronic control method of a variable gas inlet and exhaust system of a compression ignition engine, comprising a pressurization system, a waste gas recycle system, a gas intake valve late-closing mechanism and an electronic control system. The pressurization system adopts a two-level turbocharger; the waste gas recycle system comprises a high-pressure part and a low-pressure part; the gas intake late-closing mechanism is a gas intake valve push rod which is capable of adjusting the telescopic length in a self-adapting hydraulic control mode based on self motion position, and the gas intake late-closing mechanism consists of a hydraulic push rod assembly and a hydraulic auxiliary mechanism, wherein the hydraulic push rod assembly is fixed at the upper end of an internal-combustion engine cylinder head; a hydraulic oil pump is fixed on an internal-combustion engine body; an electronic control system is controlled by an electronic control unit; and the electronic control unit judges and controls the density of intake gas in real time through a pressure sensor, a temperature sensor, a rotate speed sensor, and the like in the system. The invention can control the density of intake gas in real time, improves the performance of the internal-combustion engine, greatly reduces discharged harmful product and enhances the reliability.

The invention relates to the technical field of beam-pumping units, in particular to an intelligent oil pumping control method and an intelligent oil pumping unit. The intelligent oil pumping unit comprises a main motor, a speed reducer, a crank, a connecting rod, a walking beam, a balance lifting arm, a bracket, a horse head, a base, a brake device, a beam hanger, a load sensor, a strole process measurer, a safety limiting device and a digital control cabinet, has the characteristics of safety and reliability, realizes the intelligent optimization and adjustment of stroke times and balance of the oil pumping unit, fully exerts the well yield, improves the oil pumping unit well system efficiency, is in seamless joint with an oil field computer network system to realize the data remote transmission and the remote switch well control, simplifies the operation, is convenient and fast, saves the labor, saves the energy, reduces the emission, and improves the economic benefit.

A pressure vessel fatigue test system belongs to pressure vessel test technical field, comprising oil circuit pressure device, pressurizer, weight relieving motion, and measuring and control system. The oil circuit pressure device, pressurizer, weight relieving motion consists of pump linked by pipeline and oil pump driven by electric machinery, solenoid valve, overflow valve, water cooled oil cooler, back oil filtration device, oil tank and pipelines linked with them, the measuring and control system is consisted of electric contact pressure gauge, temperature sensor, pressure sensor, computer, controller for measurement and control temperature of pressure vessel, hydraulic oil, one-way throttle valve and high pressure filtration device are fitted with pipeline linked with solenoid valve and the container, stabilization tank is fitted with oil return pipe linked to solenoid valve and oil tank. The invention is suitable for fatigue test of pressure vessel containing impurity within and fairly high pressure needed and reconstruction to present pressure vessel fatigue test device.

The invention relates to a condensation and film separation combination type oil gas recycling art technique which is an improvement of condensation type oil gas art technique. The invention adopts the combined method of condensation technique and film separating technique to reach discharging standards. The problem that the temperature of single condensation type oil gas recycling reaches lowers than 95 DEG C below zero is overcome. The invention belongs to the oil gas recycling technical field, and is mainly used for the oil gas recycling of oil house, city transfer oil house, gasoline and light weight oil loading and unloading process. The invention consists of a refrigeration machine set 16, a pre-cooling box 2, a middle cooling box 3, a liquid ring type compressor 4, a switch 5, a membrane module 6, a vacuum pump 15, a switch 8, a switch 9, an oil water separator 10 and an oil pump 13. According to the art flow sequence in the attached drawing 1, the refrigeration machine set 16, the pre-cooling box 2, the middle cooling box 3, the liquid ring type compressor 4, the switch 5, the membrane module 6, the vacuum pump 15, the switch 8, the switch 9, the oil water separator 10 and the oil pump 13 are connected together and are arranged on a base crowing. The construction is shown in the attached drawing 2. The three-dimensional graph of the modular structure is shown in the attached drawing 2.

The invention relates to a sampling device and method of gas chromatographic online analysis transformer dissolved gas, which comprises sampling probe, temperature sensor, multi-ported valve, sample quantitative pipe, marginal gas quantitative pipe, cutoff valve and marginal gas regulating system. The method directly inserts sampling probe into transformer oil and presses marginal gas into sampling probe by switching of multi-ported valve; the transformer oil is circulated by oil pump so that the dissolved gas of transformer oil can spill into marginal gas and then it achieves gas-liquid equilibrium in probe.

The invention relates to a diesel engine test system, in particular to a diesel engine oil test bed system, which comprises a return oil filter tank, a cleaning oil tank, a cleaning oil pump, a first engine oil filter, a lubricating feedback pump, an engine oil filter, a heat exchanger, a secondary engine oil filter, a first engine oil inlet/outlet filter, a heating water pump, a diesel engine oil bottom shell and an engine oil preheating water tank. The diesel engine oil test bed system has favorable use effect, safety and reliability, is simple and convenient for operation and can meet the test requirement of the diesel engine, and the advancement of the automatic regulation property and the control technology, of the system, is worth of popularization and adoption.

A combustion control method for a burner comprises: the fuel supplying means outputs a given amount of fuel oil to the fuel oil atomizing means; the fuel atomizing means sprays fuel atomized gas; said gas is ignited by the igniter; the amount of air is sent to facilitate burning by the air blowing means; the outputting flow rate of fuel oil and the flow rate of air are adjusted automatically, simultaneously and proportionally by controlling the rotating speed of the electric motors of the fuel supplying means and the air blowing means. An autocontrol burner comprises a main body, an oil pump (2), a blower fan (1), a spray gun (9) and an ignition gun (10), and further comprises a programmable control unit (18), motor speed controller (16,17) and a signal acquisition assembly. The output port of the signal acquisition assembly is connected with the input port of the programmable control unit (18). The oil pump (2) and the blower fan (1) are connected with the programmable control unit (18) by the motor speed controller (16, 17).

An oil pump includes: an inner rotor rotatable with a drive shaft in a unified manner on a drive-rotation axis; an outer rotor which has inner teeth configured to engage with outer teeth of the inner rotor and is rotatable about a driven axis eccentric to the drive-rotation axis; and an adjustment ring for rotatably supporting the outer rotor. A guide means which allows the adjustment ring to rotate about the driven axis, while allowing the driven axis to revolve about the drive-rotation axis, is formed of: first and second arm portions provided on the adjustment ring; and first and second guide faces with which the first and second arm portions are brought into slidable contact.

The invention relates to a novel rotation driving system for a mixing drum of a concrete mixing transport vehicle. In the system, two prime movers, two hydraulic main pumps, an oil supply pump and a hydraulic motor form a hydraulic closed loop together with a hydraulic valve block with the functions of relatively completing oil supply, cooling and safe buffering; the delivery volumes of the two hydraulic main pumps are different; and the low-delivery volume hydraulic main pump is used for separately realizing slow and constant mixing action of the mixing drum, and the high-delivery volume hydraulic main pump is used for rotating the mixing drum along positive and negative directions at a high speed during feeding and discharging when separately operated or combined with the low-delivery volume hydraulic main pump. The system aims to solve the problems of the influence on the concrete uniformity and the influence on the driving dynamic performance and driving safety performance which are caused by driving a roller to rotate by separately using a chassis engine under different working conditions and different road conditions in the mixing drum, fuel waste caused by the long-term operation of the high-power chassis engine at low-efficiency points and the hydraulic shock generated during the switching of the mixing drum under different working conditions.

The invention relates to a cutter head driving device for a shield tunneling machine and a control method thereof. The driving device comprises a plurality of driving motors, a plurality of speed reducers, a main transmission box, a circular cutter head and a circulating oil pump. The synchronous control method for a cutter head of the shield tunneling machine comprises the following steps of: performing synchronous and parallel PID (Proportion Integration Differentiation) closed-loop control on the driving motors; keeping the reference input signals of the driving motors the same; computing the compensation signal of the output signal of each driving motor by adopting a synchronous error compensation method, and feeding back to the input end of a corresponding driving motor; and adding the compensation signals with a control signal output by an optimal PID controller, and inputting into a corresponding driving motor. Due to the adoption of the cutter head driving device and the synchronous control method, the technical problem of synchronous running of a plurality of motors of the cutter head of the shield tunneling machine is solved; the running synchronous performance and tracking performance of a cutter head driving system of the shield tunneling machine are improved; and the motors of the cutter head are enabled to have the same stable torque or speed, and dynamic performances among the driving motors of the cutter head of the shield tunneling machine can be kept the same.

The invention discloses a hybrid electrical vehicle (HEV)/electrical vehicle (EV) regeneration brake pressure coordinate control system based on antilock brake system (ABS) hardware. The system comprises a hydraulic brake subsystem, a motor regeneration subsystem and a control system for controlling the hydraulic brake subsystem and the motor regeneration brake subsystem; and the hydraulic brake subsystem comprises a vacuum assistance system, a brake main cylinder, an oil storage tank, a travel simulator, a front wheel ABS pressure regulation system, a front wheel brake wheel cylinder, a rearwheel ABS pressure regulation system and a rear wheel brake wheel cylinder, and a working cavity I of the brake main cylinder is communicated with the travel stimulator. In the HEV/EV system regeneration brake pressure coordinate control system based on the ABS hardware, the working modes such as pure motor brake, electrohydraulic combined brake, pure hydraulic brake, antilock brake and the like can be flexibly selected according to specific conditions, and accurate brake force is provided; when a brake pedal is trampled, the travel simulator can produce good retardation brake feeling; and during pressurization, an overflow valve and a solenoid directional valve can protect an oil pump I driving motor to ensure that a system can work stably.

The invention relates to a spraying device, in particular to a rolling bearing high-efficiency anti-rust oil spraying device. The technical problem to be solved in the invention is to provide a rolling bearing high-efficiency anti-rust oil spraying device with the advantages of simplicity in operation, uniformity in spraying and high spraying speed. In order to solve the technical problem, the rolling bearing high-efficiency anti-rust oil spraying device provided by the invention comprises a left rack, a bottom plate, an oil tank, an oil pump, a right rack, an oil return pipe, a motor I, a rotating shaft, a bearing base, a sealing ring, supporting rods, a fixing plate, a circular sliding rail, slide blocks, a nozzle, a fastening sleeve, a meshed frame, a connecting rod, a motor II, a spraying adapter plate, a swing rod, an oil inlet hopper, a spraying disc, a rotating disc, a hose and a top plate, wherein the left rack, the oil tank and the right rack are arranged at the top of the bottom plate sequentially from the left to right; the oil pump is arranged on the right side at the bottom in the oil tank; the hose is arranged on the oil pump; the hose penetrates through the top of the oil tank. According to the invention, the effects of being simple in operation, uniform in spraying and high in spraying speed are achieved.

The invention discloses an intelligent intermittent pumping control device for an oil pumping machine. The intermittent pumping control device for the oil pumping machine comprises an intermittent pumping controller, an electric control box, a displacement sensor, a load sensor and a wireless antenna; the displacement sensor measures displacement at a polished rod of the oil pumping machine and is connected to the intermittent pumping controller; the load sensor measures a load at the polished rod of the oil pumping machine and is connected to the intermittent pumping controller; the intermittent pumping controller is connected with the electric control box, and comprises a power supply module, a communication module, a control module and an electric quantity module; the electric quantity module acquires the current, the voltage and the power of the oil pumping machine in a working process, and transmitting the current, the voltage and the power of the oil pumping machine to the control module; the communication module is connected with the wireless antenna; the control module acquires start-stop information of the oil pumping machine according to the load and the displacement at the polished rod of the oil pumping machine, and transmits a start-stop command to the electric control box; the electric control box comprises a power supply unit and a frequency converter, and realizes the start-stop of the oil pumping machine and the adjustment of jig frequency according to the command of the intermittent pumping controller. The invention also discloses a control method of the intermittent pumping control device for the oil pumping machine.

The invention discloses a quick test device for performances of a trough type solar thermal collector, which comprises a fuel tank, a valve arranged at the port of the fuel tank, a fuel pump, a thermal collector, a heat interchanger, a vapor tank, an expansion tank, a water pipe and a direct radiometer which is fixed with the thermal collector in the same direction, wherein the focusing point of the thermal collector is provided with a thermal collecting pipe; the fuel tank is filled with heat conducting fuel; the thermal collector, the heat interchanger and the expansion tank are connected bypipelines in sequence to form a loop; the thermal collecting pipe is connected on the left of the valve, and the expansion tank is connected on the right thereof; and the water pipe and the vapor tank are respectively connected at the inlet and the outlet of the heat interchanger. The quick test device has the advantages of simple and easily-implemented structure and capability of realizing quicktest of performances of the thermal collector. The invention also discloses a quick test method for the performances of the trough type solar thermal collector.

A pump (1) is disclosed, the pump (1) comprising a shaft (21) for driving an impeller (81) in a pump chamber (80); an electrical motor chamber (60) extending essentially circumferentially around a motor section of the shaft (21); a cooling circuit chamber (30) for being filled with a cooling liquid; and a mechanical seal chamber (40) extending essentially circumferentially around a seal section of the shaft (21), with the mechanical seal chamber (40) adapted for being filled with oil. The pump (1) may be a submersible pump.

The invention relates to a flow characteristics test method and a device of a plate-fin heat exchanger fin. The method comprises the following steps: employing the flow characteristics test device of the fin having the functions of computer control and computation to measure the pressure drop and flow of the air when flowing through the fin and the temperature before and behind the fin in real time to obtain the flow characteristic curve of the fin of the friction factor f along with the change relation of the Reynolds number Re; comparing the flow characteristic curve with the standard flow characteristic curve to detect the performance and quality of the fin. The test device comprises a fin die assembly, a high-pressure fan, a temperature sensor, a differential pressure transmitter, an air flowmeter, a pressure sensor, a high-accuracy data acquisition and control plate and a computer software for measurement and control; wherein, the fin die assembly consists of a hydraulic device of an oil pump, a clamp for clamping the fin and an air duct; both ends of the fin die assembly are fixed on a left bracket and a right bracket respectively through a pressure joint and a flexible joint; the temperature sensor is arranged on a connecting line at an air inlet and is finally connected with the high-pressure fan; the air flowmeter, the pressure sensor and an outlet temperature sensor are arranged on the side of an air outlet. The invention has the characteristics of simple test method and device, high accuracy and capability of conveniently detecting the quality and performance of the fin, etc.

The invention discloses a rotary valve and a rotary control loop using the same. The rotary valve comprises a master valve and a control valve, wherein the master valve comprises a master valve rod; the control valve comprises a control valve rod; the control valve is connected with a valve body on the master valve; and the master valve rod and the control valve rod push against each other through a connecting piece. The rotary control loop utilizes an oil pump for oil supply; an overflow valve is arranged between the oil pump and the rotary valve; a buffer valve is connected in parallel on an oil line between the master valve of the rotary valve and a motor; a control oil inlet of the control valve of the rotary valve is connected with an external oil source and depends on the external oil source for oil supply; and a control oil outlet is communicated with a brake cylinder to provide oil for the brake cylinder. The invention has the advantages that the oil control of the control cylinder is controlled by the control valve which is connected with the master valve into a whole, namely the movement of the master valve rod can drive the movement of the control valve rod synchronously so that the start of the brake cylinder is controlled well; and the rotary valve and the rotary control loop using the same are not disturbed by the load pressure oscillation, the stable start and stop operation can be realized under big and small flow rate and light and heavy load, and the impact under a dynamic working condition is weakened greatly.

The invention provides a high altitude test system and a method for an aircraft engine oil system. According to the lubricating oil system of an engine, a vacuum pump, an oil tank, a booster pump, lubricating oil cavities and scavenge oil pumps are sequentially connected via a pipeline. A pressure adjusting valve is arranged between a main scavenge oil pump and the oil tank. A pressure sensor, a temperature sensor and a mass flow meter are arranged between the booster pump and the lubricating oil cavities. An equivalent nozzle used for regulating the flow is arranged inside each lubricating oil cavity. Through adjusting the equivalent nozzle of each lubricating oil cavity, the oil supply of the lubricating oil cavity is adjusted to be equal to the oil supply of an engine bearing chamber. Meanwhile, the total oil supply is ensured to simulate the oil supply of the engine. By means of the pressure adjusting valve, the oil pressure at the outlet of the main scavenge oil pump is adjusted and the oil pressure at the outlet of the main scavenge oil pump of an engine scavenge oil system is simulated. According to the technical scheme of the invention, the working performances of the engine oil system in different heat load and high altitude conditions can be scientifically and really simulated. Therefore, the working reliability and the service life of a lubricating oil pump can be found out and examined in advance. The phenomenon that due to the fact that the high altitude performance of the engine cannot be accurately determined, the test run by engine altitude test facilities must be conducted for verification and accumulation can be avoided. Therefore, the development schedule of the engine is ensured, and the development cost is saved.

The invention discloses a tensioning device for deep roadway high-prestress anchor bolt support and an operation method thereof. The tensioning device comprises a hydraulic oil pump, a hydraulic jack, a connector, and a nut fastening device. The hydraulic oil pump is connected to the hydraulic jack through a hydraulic pipe. The hydraulic jack is composed of a cylinder, a piston, and a piston rod. The outer end of the piston rod is connected with the tail of an anchor bolt through the connector. The nut fastening device sleeves a nut at the tail of the anchor bolt. A pretress can be accurately applied to the anchor bolt, anchor bolt damage or breakage caused by too large prestress is avoided, and the construction cost is greatly saved. Moreover, the tensioning device is simple in structure, reasonable in design, convenient to operate and easy to carry, and is of high practicability in deep roadway high-prestress anchor bolt support engineering.