24 results about "Charge pumping" patented technology

A transmission system for a drilling machine includes a drive pump, a motor driven by the drive pump, a first fluid line that fluidly couples the motor with the drive pump, and a second fluid line that fluidly couples the motor with the drive pump. The transmission system also includes a charge pump in fluid communication with the drive pump, a fluid charge line that fluidly couples the charge pump with the drive pump, and an accumulator disposed in the fluid charge line. In an event of a change in a load on the transmission system, the accumulator is adapted to supply additional fluid towards at least one of the first fluid line and the second fluid line to prevent a reduction in a pressure in at least one of the first fluid line and the second fluid line below a recommended operating level of at least one of the drive pump and the motor.

Problem to be solved: To provide a hydraulic circuit for a construction machine capable of supplying hydraulic oil to a closed circuit without a charge pump. Means for solving the problem: The open circuit of the hydraulic circuit includes a hydraulic pump, a hydraulic actuator operated by hydraulic oil discharged from the hydraulic pump, a directional switching valve for switching a flow direction of the hydraulic oil from the hydraulic pump to the hydraulic actuator, a return line connecting the directional switching valve and a hydraulic oil tank, and a return check valve provided in the return line. The closed circuit of the hydraulic circuit includes a bidirectional hydraulic pump having a first port and a second port, a hydraulic motor operated by hydraulic oil discharged from the bidirectional hydraulic pump, a first line connecting the first port of the bidirectional hydraulic pump and the hydraulic motor, and a second line connecting the second port of the bidirectional hydraulic pump and the hydraulic motor. Between the open circuit and the closed circuit, a charge line connecting the return line and the first line via a first check valve and connecting the return line and the second line via a second check valve is provided.

The utility model provides a double-upward-drawing large-output continuous delivery pump which comprises a stock bin, a charging pump, a delivery pump, a terminal warehouse, a delivery air source and an instrument air source. The stock bin is connected with the conveying pump through the charging pump, and the charging pump is provided with an exhaust pipeline and communicated with the conveying pump through an upward guiding pipeline. The conveying pump is connected to the terminal library through a conveying pipeline; the conveying air source provides power for the charging pump and the conveying pump through air pipes, and the instrument air source monitors the material levels of the charging pump and the conveying pump; a hydrophobic separator is mounted at the starting point of the air source conveying pipeline and aims at reducing the water content of the air source conveying pipeline and improving the air dryness; an air supply device is additionally arranged at the descending stage of the conveying pipeline, so that the material descending speed can be reduced, the pipe blockage problem is effectively prevented, the pipeline layout is more flexible, and the device is particularly suitable for complex geographical environments; meanwhile, the overall elevation of the conveying pipeline is also reduced by using the air supply device, and the construction cost is reduced; according to the utility model, the stability and applicability of the conveying system are improved by additionally arranging the hydrophobic separator and the air supply device.

The present invention relates to a method for operating a hydraulic system (100) of a mobile working machine, wherein the hydraulic system (100) is provided with a hydraulic pump (2) which is connected to a hydraulic motor (4) via a first line (10) and a second line (11), wherein a bypass valve (99) is also provided which is positioned between the first line (10) and the second line (11) and is designed to prevent and permit hydraulic connection between the first and the second line (10, 11); wherein the hydraulic system (100) also comprises a charge pump (13) which is designed to supply pressurised fluid to the first and / or the second line (11) in order to compensate for fluid losses occurring during operation of the hydraulic system (100); characterised in that the method comprises the following steps: a) establishing a hydraulic connection between the charge pump (12) and the bypass valve (99) such that the bypass valve (99) can be controlled taking into account a charge pressure provided by the charge pump (12).

A work machine includes: a hydraulic actuator; a closed-circuit pump that is connected to the hydraulic actuator in a closed circuit, and supplies and discharges a hydraulic working fluid to and from the hydraulic actuator; an open-circuit pump that is connected to the hydraulic actuator in an open circuit, and supplies the hydraulic working fluid to the hydraulic actuator; a charge pump; a charge flow path that introduces the hydraulic working fluid delivered from the charge pump to the closed circuit; an excess fluid discharging device that discharges an excess hydraulic working fluid of the closed circuit to the charge flow path; and a controller that controls a delivery capacity of the closed-circuit pump and a delivery capacity of the open-circuit pump. The controller increases the delivery capacity of the open-circuit pump, or reduces the delivery capacity of the closed-circuit pump when a state of a pressure of the charge flow path has transited to be lower than a predetermined pressure threshold from equal to or higher than the predetermined pressure threshold, or when a state of the work device has transited to a state of performing the excavation work from a state of not-performing the excavation work.

To provide a hydraulic circuit for a construction machine which can supply work fluid to a close circuit without a charge pump.SOLUTION: An open circuit 2a of a hydraulic circuit 2 includes: a hydraulic pump 4; a hydraulic actuator 6; a directional switch valve 8; and a return check valve 12 provided on a return line 10 for connecting the directional switch valve 8 and a work fluid tank 14. A close circuit 2b of the hydraulic circuit 2 includes: a hydraulic motor 30 operated by the work fluid ejected by a bidirectional hydraulic pump 28; a first line 32 for connecting a first port 28a of the bidirectional hydraulic pump 28 and the hydraulic motor 30; and a second line 34 for connecting a second port 28b of the bidirectional hydraulic pump 28 and the hydraulic motor 30. A charge line 44 is provided between the open circuit 2a and the close circuit 2b which connects the return line 10 and the first line 32 via a first check valve 46, and connects the return line 10 and the second line 34 via a second check valve 48.SELECTED DRAWING: Figure 1

The invention relates to an electric switching arrangement having a charge pump (NCP) which has at least two connection contacts (a1, a2), of which a first connection contact (a1) is connected to a first voltage potential (V1) and a second connection contact (a2) is connected via a series circuit, which has at least one first capacitor (C1), a second capacitor (C2) and a first diode (D1) arranged between the two capacitors, to a second voltage potential (V1) which is higher than the first voltage potential (V1) and which is also connected, via a switching element, to the first capacitor (C1), wherein the charge pump (NCP) has a third connection contact (a3), which is connected to an output (AK1) of a first comparator (K1) which has a first and a second comparator input (K1-, K1+), of which the first comparator input (K1-) is connected to an anode potential (refP) of a second diode (D2) at which the second voltage potential (V2) is applied and which is connected in series to the first diode (D1) and in parallel to the second capacitor (C2), and of which the second comparator input (K1+) is connected to a cathode potential (refN) of a third diode (D3) at the allocated anode of which the second voltage potential (V2) is applied.

The invention belongs to the technical field of energy collection, and particularly relates to a mechanical energy collection device based on a bionic structure and a preparation method thereof. The mechanical energy collecting device comprises a polytetrafluoroethylene planar film, a water film, a first electrode, a second electrode, a carbon black film and a porous polytetrafluoroethylene film, the carbon black film is arranged on the porous polytetrafluoroethylene film, the first electrode and the second electrode are arranged on the carbon black film, the water film is arranged on the carbon black film, and the polytetrafluoroethylene planar film is arranged on the water film. According to the invention, the porous membrane is loaded with carbon black to form an electric bilayer with a random porous microstructure, and an ion transport mechanism of a natural plant is simulated. Along with the increase of the pressure, the contact area of the micro-structure electric double-layer coupling capacitor in the solid-liquid channel is increased, and the stored charge quantity is correspondingly increased, which is similar to a liquid charge pump mechanism, so that the energy conversion efficiency of the device is improved.

[Problem] To provide a hydraulic circuit of a construction machine that can supply hydraulic oil to a closed circuit even without a charge pump. [Solution] An opening circuit of a hydraulic circuit includes a hydraulic pump, a hydraulic actuator operated by hydraulic oil discharged from the hydraulic pump, a direction switching valve switching a flow direction of the hydraulic oil from the hydraulic pump to the hydraulic actuator, a return line connecting the direction switching valve and a hydraulic oil tank, and a return check valve provided on the return line. A closed circuit of the hydraulic circuit includes a bidirectional hydraulic pump having a first port and a second port, a hydraulic motor operated by hydraulic oil discharged from the bidirectional hydraulic pump, a first line connecting the first port of the bidirectional hydraulic pump and the hydraulic motor, and a second line connecting the second port of the bidirectional hydraulic pump and the hydraulic motor. A charge line connecting the return line and the first line via a first check valve and connecting the return line and the second line via a second check valve is provided between the open circuit and the closed circuit.

The utility model discloses a series hydraulic pump, which relates to the technical field of hydraulic elements and comprises a plurality of hydraulic pumps, each hydraulic pump comprises a branch pump and a shell, the branch pumps are arranged in the shells, the shells of the hydraulic pumps are sequentially connected, the branch pumps on the hydraulic pumps are sequentially connected in series, one hydraulic pump is provided with an oil supplementing pump, and the other hydraulic pump is provided with an oil supplementing pump. The hydraulic pump with the oil supplementing pump is a rear pump, a shell of the rear pump comprises a shell body and a shell cover, a maintenance opening is formed in one side of the shell body, the shell cover is detachably connected to the shell body and can seal the maintenance opening, each branch pump is provided with two oil openings, and an oil outlet of the oil supplementing pump can be communicated with at least one oil opening in each branch pump. An oil inlet of the oil supplementing pump is used for introducing hydraulic oil. The series hydraulic pump is lower in maintenance cost and longer in service life.

This invention discloses a fractional phase-locked loop (PLL) based on multi-path quantization noise compensation. It introduces a data synchronization circuit based on the falling edge of the reference clock, ensuring that the divider signals of all paths have reached steady state before the phase detector is triggered by the next rising edge of the PFD, thus completely eliminating dynamic timing interference in the mixed-signal path. By introducing a multi-path retimer with a sign bit, the compensable quantization noise range is expanded. The current-DAC type charge pump proposed in this invention adopts a charge pump architecture based on a source switch array and a static discharge current. The source switch array utilizes the low impedance characteristics of the source nodes of the current source transistors, significantly improving the switching speed and reducing the settling time. The static discharge current forces the loop to maintain a fixed non-zero phase offset in the locked state, permanently shifting the charge pump operating point out of the nonlinear region and deeply suppressing fractional spurious emissions.

A reverse osmosis system and method of operating the same includes a membrane housing comprising a reverse osmosis membrane therein. The membrane housing has a feed fluid input, a brine outlet and a permeate outlet; The system further includes a charge pump, a plurality of valves and a tank having a volume comprising a movable partition dividing the volume into a first volume and a second volume. The plurality of valves selectively couples the charge pump to the first volume or the second volume and the brine outlet to the second volume or the first volume respectively.

The embodiment of the application provides a drum washing machine and a control method thereof, relates to the related technical field of washing equipment, and is used for realizing customization of a door closing sound. The drum washing machine provided by the embodiment of the application comprises an outer drum, a door seal, an energy absorption cavity, an air charging pump, a pressure relief valve, a pressure sensor and a controller. The energy absorption cavity is connected with the door seal. The air charging pump is connected with the energy absorption cavity through a hose and an air charging hole reserved in the door seal, is used for increasing a pressure value in the energy absorption cavity, and the pressure relief valve is used for reducing the pressure value in the energy absorption cavity. The controller is configured to: in response to receiving a trigger instruction selected by a user, determining a pressure preset value according to a sound type corresponding to the trigger instruction; and controlling the air charging pump or the pressure relief valve to operate, so that the pressure value in the energy absorption cavity reaches the pressure preset value. The drum washing machine provided by the embodiment of the application can determine the pressure value in the energy absorption cavity according to the sound type selected by the user, and then make the door closing sound when the door is closed reach the sound effect customized by the user.

1. The name of the design product: switch (on the switch of the charge pump). 2. The use of the design product: the design product is used for the switch on the charge pump. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a nuclear power station charging pump and emergency boron injection pipeline structure, which comprises a main charging pipeline, a circulating pipeline, a main output pipeline and a main boron injection pipeline, and the main charging pipeline is sequentially connected with a first isolating valve, the main boron injection pipeline, a first charging pump, the main output pipeline, a second isolating valve and a volume control box; the circulating pipeline is sequentially connected with the concentrated boron box, the main output pipeline, the third isolating valve, the circulating pump and the concentrated boron box to form a circulating pipeline; the main output pipeline is also connected with a fourth isolating valve, and the main boron injection pipeline is also connected with a fifth isolating valve; the emergency boron injection function is executed through the first charging pump, the first charging pump is in a normally-open state when the unit is normally filled with water, and the circulating pump is in a normally-open state or an intermittent-open state, so that long-time standby application of power equipment is avoided, and investment of related periodic tests and inspection is reduced. The equipment utilization rate is high, and part of pipelines can execute different functions under different working conditions, so that the arrangement space is more compact, and reactor type miniaturization is facilitated.

Problem to be solved: To provide a hydraulic circuit for a construction machine capable of supplying hydraulic oil to a closed circuit without a charge pump. Means for solving the problem: The open circuit of the hydraulic circuit includes a hydraulic pump, a hydraulic actuator operated by hydraulic oil discharged from the hydraulic pump, a directional switching valve for switching a flow direction of the hydraulic oil from the hydraulic pump to the hydraulic actuator, a return line connecting the directional switching valve and a hydraulic oil tank, and a return check valve provided in the return line. The closed circuit of the hydraulic circuit includes a bidirectional hydraulic pump having a first port and a second port, a hydraulic motor operated by hydraulic oil discharged from the bidirectional hydraulic pump, a first line connecting the first port of the bidirectional hydraulic pump and the hydraulic motor, and a second line connecting the second port of the bidirectional hydraulic pump and the hydraulic motor. Between the open circuit and the closed circuit, a charge line connecting the return line and the first line via a first check valve and connecting the return line and the second line via a second check valve is provided.

The invention discloses a method for preparing a pure-phase doped ternary precursor by a spray pyrolysis method based on a nitrate system, and relates to the technical field of functional oxide material synthesis, and the method comprises the following steps: establishing a time baseline and electric heat flow field chromatography network, carrying out continuous sampling on droplet charge distribution in a spray area, constructing a charge flux spectrum, and calculating the charge flux spectrum. And micro-discharge prior fingerprints are extracted to form a charge space-time reference. According to the method, discharge precursor identification and early warning are realized through charge space-time reference and potential inversion, a crystal nucleus disturbance region is identified in combination with anti-fact backtracking, energy redistribution is realized through charge pumping, micro-vortex traction and off-peak driving under the guidance of an energy coupling track, and a closed-loop regulation environment is constructed, so that amorphous generation is inhibited, and the stability of the system is improved. The doping uniformity, the crystal phase purity and the particle size controllability are improved, and the method is suitable for large-scale preparation of high-performance positive electrode materials.

The invention provides a digital control charge pump circuit and a control method of a charge pump module. The digital control charge pump circuit comprises a comparison module, a control module, a driving module, a reference module, a clock source, the charge pump module and a feedback module, the output end of the comparison module is electrically connected with the control module, the control module is electrically connected with the driving module, the charge pump module comprises N charge pump units, the driving module is electrically connected with the N charge pump units, and the N charge pump units jointly form the output end of the charge pump module and are electrically connected with the input end of the feedback module. The output end of the feedback module is electrically connected with the input end of the comparison module; the clock source is electrically connected with the control module and the driving module so as to provide clock signals for the control module and the driving module. The reference module is electrically connected with the input end of the comparison module so as to provide at least one reference voltage for the comparison module. According to the method, the LCO phenomenon can be effectively eliminated, and meanwhile, the investment cost is reduced.

The present invention provides an open-closed loop smooth switching system based on a charge pump phase-locked loop, comprising: a reference clock fault detection module connected to the charge pump phase-locked loop, which detects whether a reference clock fault has occurred and provides reference clock fault indication control; a PLL lock detection module, which performs phase-locked loop lock indication control based on the phase difference between the reference clock's frequency-divided signal and the charge pump output clock's frequency-divided signal; an ADC / DAC control module, which performs auxiliary hold of the charge pump open loop and auxiliary release of the charge pump phase-locked loop from open loop to closed loop; and a PLL control state machine module, which controls the state machine to select clocks, enter hold state, and exit hold state. The present invention can identify fault information as early as possible, realize open-closed loop conversion of the charge pump phase-locked loop, and enter or exit hold state. Furthermore, the deviation between the charge pump's reacquired reference clock and the initial frequency value is less than 0.15ppm, and the switching is completed smoothly without affecting subsequent circuits.

The application relates to an oxygen sensor and a detection method based on an electrochemical detection principle of a charge pump, and belongs to the technical field of sensors.The oxygen sensor comprises a gas detection module and a host module, and the gas detection module and the host module realize real-time data interaction through a data bus; the oxygen sensor comprises a gas detection module and a host module, and the gas detection module and the host module realize real-time data interaction through a data bus; the gas detection module is used for collecting environmental parameters and oxygen parameters, and converts the collected data into digital signals, which are transmitted to the host module through a digital bus; the host module is used for calculating accurate oxygen concentration information under an environmental state in real time according to the obtained environmental parameters and oxygen parameter digital signals. On the basis of reasonable adaptation of hardware and software, multi-dimensional information sensing and preprocessing are realized, and the detection precision of the oxygen sensor and the environmental adaptability of the oxygen sensor can be improved.

The present invention discloses an anti-fuse programming control circuit based on a master-slave charge pump structure, which relates to the technical field of anti-fuses. In the circuit, a master charge pump module obtains an external voltage and connects to each slave charge pump module. Each slave charge pump module is connected to an anti-fuse array, and the layout position of each slave charge pump module is no more than a predetermined distance from the layout position of the connected anti-fuse array. The feedback network outputs a feedback signal corresponding to the slave charge pump module to the master charge pump module based on the programming voltage output by each slave charge pump module to the connected anti-fuse array. The master charge pump module adjusts the main drive signal provided to the slave charge pump module based on the feedback signal corresponding to each slave charge pump module to stabilize the programming voltage output by the slave charge pump module. The circuit can provide accurate programming voltage to the anti-fuse array, which is beneficial to improving the consistency of the resistance value after anti-fuse programming and optimizing performance.

This invention provides a configuration that enables more optimal circulation of the hydraulic fluid in the hydraulic system of a crawler-type travel device, such as a crawler-type transport vehicle. [Solution] The hydraulic system Sa is provided for each of the pair of crawlers 16R and 16L and includes closed circuits C1 and C2 through which hydraulic fluid circulates between hydraulic pumps 22 and 24 and hydraulic motors 32R and 32L; a supply oil passage 47 that supplies hydraulic fluid from the hydraulic fluid tank 44 to the closed circuits C1 and C2 by the operation of a charge pump 26; a return oil passage 60 provided with a cooler 63 that returns hydraulic fluid from the closed circuits C1 and C2 to the hydraulic fluid tank 44; and adjustment valve mechanisms 70a and 70b as adjustment means for adjusting the flow rate of hydraulic fluid from the closed circuits to the hydraulic fluid tank via the return oil passage.

The present application discloses a hydrostatic system for a walking machine and a control method thereof, wherein the hydrostatic system includes a variable piston pump, an oil charge pump, a first balancing valve, a large-flow check valve, a pressure-reducing main valve core, a first control cover plate, an overflow main valve core, a second control cover plate, a variable piston motor, and a second balancing valve; the control method includes the following steps: S1, obtaining a handle value; S2, if the handle value is less than 0, or the handle value is greater than or equal to 0 and the engine feedback load rate is greater than a, setting a target current I of the electric proportional overflow valve in the first control cover plate; f =0, the electric proportional relief valve is set to the maximum value; S3, if the handle value ≥ 0 and when the engine feedback load rate is < a, the target current I of the electric proportional relief valve is calculated based on the current displacement value of the variable piston pump and the rated braking torque T of the engine. f The electric proportional relief valve is controlled in real time. This application solves the technical problems of severe system heating, slow response, potential safety hazards, and easy damage to components.

This invention relates to the field of top-charge pump technology, specifically disclosing a top-charge pump maintenance assistance system based on point cloud data overlay. This system addresses the problems of inaccurate point cloud data, low defect identification rate, and inconsistent maintenance quality in traditional top-charge pump maintenance. The system includes an auxiliary maintenance module and a maintenance data recording and analysis module. The auxiliary maintenance module comprises an intelligent inspection guidance module, an auxiliary measurement module, and a digital results storage module. The auxiliary maintenance module is connected to a data analysis module, which includes a point cloud data overlay comparison module, a measurement data comparison module, and a model data comparison module. The data analysis module is also connected to a data processing module, which includes an AI defect identification module and an AI fault prediction module. The point cloud data overlay comparison module is configured with an improved dynamic registration algorithm. This invention, through point cloud data overlay, dynamic registration algorithm, and deep learning model, accurately identifies impeller defects and improves fault prediction capabilities, reducing misidentification and omissions.