19948results about "Pumps" patented technology

A wind energy plant with a nacelle, a rotor, which features at least one rotor blade adjustable in its blade pitch angle, a central control device for controlling the wind energy plant and a control unit disposed in the rotor for controlling the blade pitch angle of the at least one rotor blade, wherein the central control device and the control unit in the rotor can exchange data with each other via a data link, which comprises at least one first sending and receiving device at the nacelle side and at least one second sending and receiving device at the rotor side, wherein a wireless network connection with a safety-oriented communication protocol is provided between the at least one first sending and receiving device and the at least one second sending and receiving device, and that one monitoring- and communication device at a time is associated to the first and / or the second sending and receiving device, which can monitor the function of the sending and receiving device and initiate a predetermined action in the case of an error.

A gas turbine engine comprises a fan, a core turbine engine coupled to the fan, a fan case housing the fan and the core turbine engine, a plurality of outlet guide vanes extending between the core turbine engine and the fan case, and an acoustic spacing. The fan comprises a plurality of fan blades that define a fan diameter and a BEAL. The fan case comprises an inlet and an inlet length between the inlet and the fan. The acoustic spacing comprises a distance between the fan and the plurality of outlet guide vanes, and in combination with the BEAL determines an acoustic spacing ratio of the gas turbine engine.

An engine for aeromechanical instability abatement includes a sensor configured to capture data from rotating blades of the engine system, a airflow effector device, and an engine controller. The engine controller is configured to control the airflow effector device according to a nominal schedule, detect, based on a signal from the sensor indicating a vibration amplitude of the rotating blades within a frequency band, an incipient instability condition, in response to the incipient instability condition being present, determine a modified control parameter for at least one of the airflow effector device, and control the airflow effector device according to the modified control parameter, deviating from the nominal schedule.

The invention discloses a dredge pump control system and method for river regulation, and relates to the technical field of dredge pump control. The dredge pump control system comprises a sensing module, a centralized control module, an energy-saving execution module and a control parameter recording module; the sensing module is arranged on a multi-element sensor at a key part of a dredge pump for acquiring data, and the data is pre-processed by a microprocessor and then transmitted to the centralized control module at a high speed by a wireless transmission module, so that an accurate basis is provided for system control; according to the invention, by integrating multiple sensors and an advanced control algorithm, the dredging efficiency and accuracy of the dredge pump of the dredger are obviously improved; the sensing module can monitor key parameters of the dredge pump in real time, such as suction pressure, discharge flow, pump shaft temperature and sediment concentration, and it is ensured that the running state of the dredge pump is comprehensively known; and the centralized control module dynamically optimizes a control sequence by using a model predictive control and fuzzy logic control algorithm so as to adapt to variable working conditions.

The invention relates to the technical field of vacuum extraction control, and discloses a multi-stage vacuum extraction control system which comprises a central processing unit, a multi-stage vacuum pump set control module, a vacuum degree dynamic monitoring module and the like. The multi-stage vacuum pump set control module coordinates all stages of pumps to work according to a preset vacuum degree target value, and the vacuum degree dynamic monitoring module collects pressure data in real time and judges abnormity. The pressure gradient adjusting module adjusts the extraction rate of the adjacent pump to maintain the vacuum gradient stable when the pressure is abnormal, and the abnormity response module controls starting and stopping or rate correction of the pump according to the abnormity level. In addition, the system further has the functions of vacuum pump efficiency evaluation, pressure feedback compensation, leakage detection, redundancy switching, historical data backtracking, collaborative optimization and the like. The system can accurately control the vacuum degree, efficiently deal with abnormities and realize equipment state monitoring and optimization, and is widely applied to the fields with high requirements on the vacuum degree, such as semiconductor manufacturing and vacuum coating.

A fluid transfer device for a turbomachine with longitudinal axis X, which includes a stator portion intended to be connected to a stator equipment of the turbomachine and a rotor portion engaged in the stator portion. The stator equipment including at least one conduit fluidly connected to at least one pipeline of the stator portion, the stator portion and the stator equipment including an attachment interface intended to releasably receive attachment members, the attachment interface and the attachment members being configured so as to make a sealed coincidence of the pipelines and conduit, and the transfer device comprising at least one passage allowing the access of an external tool upstream of the transfer device for accessing the attachment members and passing through the transfer device in either side.

A connecting rod assembly includes a crosshead for coupling a connecting rod to a plunger, the crosshead having a hole extending through the crosshead. The connecting rod assembly also includes a knuckle cage positioned within the crosshead, the knuckle cage extending through the hole and including a cutout to provide access to a passage formed in the knuckle cage. The connecting rod assembly further includes a knuckle positioned within the passage of the knuckle cage, the knuckle having a mounting surface that is substantially planar, the mounting surface coupling to the connecting rod at a mating end with a substantially planar mating end surface.

A connecting rod assembly includes a crosshead for coupling a connecting rod to a plunger, the crosshead having a hole extending through the crosshead. The connecting rod assembly also includes a knuckle cage positioned within the crosshead, the knuckle cage extending through the hole and including a cutout to provide access to a passage formed in the knuckle cage. The connecting rod assembly further includes a knuckle positioned within the passage of the knuckle cage, the knuckle having a mounting surface that is substantially planar, the mounting surface coupling to the connecting rod at a mating end with a substantially planar mating end surface.

The invention relates to the technical field of vibration monitoring, in particular to a slurry pump motion monitoring management system based on data analysis, which comprises a multi-source acquisition module, a period judgment module, a trend focusing module and a dynamic management and control module. According to the method, vibration data are collected through a three-axis acceleration sensor, a fundamental frequency amplitude is extracted through FFT, time-frequency characteristics and periodic distribution are fused in combination with an extreme value interval sequence, the data representation dimension is enhanced, the rising slope is processed through moving average, the periodic variation is calculated, random noise is restrained, and trend continuity is enhanced. Monotonicity test is combined with dynamic threshold judgment to improve anomaly recognition sensitivity; a sliding window is used for segmenting multi-cycle data; a sudden change interval is positioned based on a pressure amplification rate second derivative; the limitation of a frequency domain on transient feature recognition is broken through, a pressure amplification rate three-dimensional vector is constructed, cosine similarity is calculated, and a working condition difference degree is quantified to dynamically bind a maintenance instruction; and closed-loop feedback is formed to improve the early warning and decision matching degree.

To simplify a cooling circuit of an electric vehicle.SOLUTION: An electric pump 1 is provided in a cooling circuit in which a cooling medium circulates in an electric vehicle. The electric pump 1 includes an inlet port 6 for taking in the cooling medium, and a plurality of outlet ports 7 for discharging the cooling medium. The outlet ports 7 have inside diameters different from each other. The electric pump 1 has the plurality of outlet ports 7, and therefore, a flow passage of the cooling circuit is branched into a plurality of flow passages on a downstream side of the electric pump 1. The outlet ports 7 have the inside diameters different from each other, and therefore, a flow rate of the cooling medium can be optimized in each of the flow passages on the downstream side of the electric pump 1.SELECTED DRAWING: Figure 2

Apparatus and methods are described including a ventricular assist device that includes a frame having struts that define a plurality of cells. In its non-radially-constrained configuration, the frame includes a generally cylindrical portion. A tube defines blood outlet openings, and a portion of the tube is disposed outside the frame and is coupled to the generally cylindrical portion of the frame, such that the portion of the tube conforms with a structure of struts of the frame. An inner lining is coupled to an inside of the generally cylindrical portion of the frame, such as to provide the generally cylindrical portion of the frame with a smooth inner surface. An impeller is disposed at least partially inside the generally cylindrical portion of the frame and is configured to pump blood through the tube and out of the one of more blood outlet openings. Other applications are also described.

A turbine engine with an engine core defining an engine centerline and comprising a rotor and a stator. The turbine engine including a set of composite airfoils circumferentially arranged about the engine centerline and defining at least a portion of the rotor. An airfoil in the set of composite airfoils including a composite portion extending chordwise between a composite leading edge and a trailing edge and a leading edge protector coupled to the composite portion.

The present application relates to the technical field of purification equipment, and in particular, to a vibration damping and noise reduction device, a fan, and a range hood. The vibration damping and noise reduction device includes a damping plate, a buffer plate, and an elastic buffer member. The damping plate and the buffer plate are spaced apart facing each other, and the damping plate is used to fit with the fan cover plate. The elastic buffer member is disposed between the damping plate and the buffer plate, and both ends of the elastic buffer member are respectively abutted against and connected to the buffer plate and the damping plate. The elastic buffer member can expand and contract in a direction perpendicular to the damping plate, so that when the fan operates and generates vibrations, the expansion and contraction deformation of the elastic buffer member can extend the time of vibration transmission to reduce the impact force generated by the vibration. Furthermore, under the combined action of the damping effect of the damping plate and the elastic buffer member, the vibration of the fan can be more effectively alleviated, and the working noise of the fan can be reduced.

The invention belongs to the field of electromechanical control, relates to an electric pump work control technology, and discloses an electric pump work comprehensive control method and system.The work comprehensive control method comprises the steps that onboard state signals, flight control system state signals and hydraulic pressure of each sub hydraulic system in a hydraulic system are collected in real time; starting and stopping of an electric pump connected to the hydraulic sub-system are controlled through a first electric pump control logic and an anti-error working mechanism according to the onboard state signal; and according to the flight control system state signal, the hydraulic pressure and other electric pump control instructions, the electric pump connected to each sub hydraulic system is automatically controlled through second electric pump control logic, an anti-error working mechanism and a time-staggered working mechanism. The working accuracy of the electric pump can be ensured, meanwhile, system damage caused by simultaneous starting of the electric pump is avoided, and the system safety is improved.

The invention discloses a slurry pump control method and related equipment, and relates to the technical field of seawater desalination, and the method comprises the following steps: obtaining sensor data of a slurry pump; data analysis is conducted on the sensor data, and the working condition abnormal index of the slurry pump is determined; determining a target control instruction corresponding to the working condition abnormal index based on the working condition abnormal index and a preset threshold interval; and based on the target control instruction, the slurry pump is controlled to execute corresponding target regulation and control operation. Real-time monitoring and intelligent judgment of the operation state of the slurry pump are achieved, early warning can be triggered at the initial stage of equipment abnormity, the operation parameters can be adjusted in a self-adaptive mode, the response delay problem of a traditional single control mode is effectively avoided, and the operation reliability and safety of the equipment are improved.

Apparatus and methods are described including delivering a left-ventricular assist device to a subject's aorta. The device including a distal-tip element that defines a straight proximal portion, and a curved distal portion, the curved distal portion defining first and second curves with an elongated straight portion between the first and second curves. The distal-tip element is centered with respect to the aortic valve using the curved distal portion of the distal-tip element, to thereby guide the device through the subject's aortic valve atraumatically. A pump pumps blood through from the subject's left ventricle to the subject's aorta. Other applications are also described.

Apparatus and methods are described including delivering a left-ventricular assist device to a subject's left ventricle. A tube is positioned such that a proximal portion of the tube traverses an aortic valve of the subject, and a distal portion of the tube is disposed within a left ventricle of the subject. A pump pumps blood through the tube from the subject's left ventricle to the subject's aorta such as to cause the proximal portion of the tube to be maintained in an open state, and to cause at least a portion of the tube to become curved. Other applications are also described.

The invention discloses an air conditioner with a grille, relates to the technical field of air conditioners, and aims to solve the problem that the air resistance at an air outlet grille of an outdoor unit in the prior art is relatively large. The air outlet grille of the air conditioner with the grille comprises a positioning part, a supporting part and a grille net. The positioning part is close to the ventilation opening and connected with the machine shell. The supporting part is located in the positioning part. The grating net comprises a plurality of connecting parts, a plurality of outer grating strips and a plurality of inner grating strips. The connecting parts are located between the supporting part and the positioning part and distributed around the supporting part at intervals, and the supporting part is connected with the positioning part through at least part of the connecting parts. The multiple outer grating strips are located between the positioning part and the supporting part and distributed at intervals in the radial direction of the positioning part, and the multiple outer grating strips are connected with at least part of the connecting part in a crossed mode. The multiple inner grid strips are located on the air inlet sides, close to the draught fan, of the outer grid strips in the axial direction of the air outlet grid, and the inner grid strips and the outer grid strips are arranged at intervals. The air conditioner with the grating is used for exchanging heat with air.

Embodiments include a buoyant wave energy converter. In an embodiment, the wave energy converter comprises an upper chamber having a first fluid reservoir and a first gas pocket, and a lower chamber having a second fluid reservoir and a second gas pocket. In an embodiment, an injection tube is between and fluidly coupled to the upper chamber and the lower chamber, where the injection tube is to impel a fluid from the second fluid reservoir into the first fluid reservoir when the upper chamber, the lower chamber and the injection tube oscillate about a waterline with the upper chamber adjacent to the waterline and the lower chamber submerged below the waterline and vertically beneath the upper chamber. An effluent tube is fluidly coupled to the upper chamber and the lower chamber, where the effluent tube is to return the fluid from the first fluid reservoir to the injection tube.

The invention discloses an air conditioner with an axial flow fan. The air conditioner aims to solve the problem that the air supply efficiency of the axial flow fan is reduced due to blade top air leakage. The air conditioner with the axial flow fan comprises a shell, a refrigerant heat exchanger and the axial flow fan, the refrigerant heat exchanger and the axial flow fan are located in a mounting cavity of the shell, and the axial flow fan is used for driving air to flow through the refrigerant heat exchanger. The axial flow fan comprises a motor and axial flow fan blades, the axial flow fan blades comprise a hub and a plurality of axial flow blades, the hub is used for being connected with an output shaft of the motor, and the multiple axial flow blades are distributed in the circumferential direction of the hub at intervals and connected with the hub. On the outer edge, away from the hub, of the axial flow blade, the radial distance between the end, close to the windward side, of the outer edge and the hub is larger than that between the end, close to the leeward side, of the outer edge and the hub, and the axial flow blade is used for reducing the blade top clearance at the outer edge. The axial flow fan of the air conditioner provided by the invention has relatively high air supply efficiency.

The invention relates to the technical field of automatic detection data processing, in particular to a cooling fan automatic detection cleaning system which comprises an electromagnetic compatibility strengthening sensing module, a multi-physical field feature decoupling module, a layered fault diagnosis module, a dynamic cleaning strategy generation module, an anti-corona cleaning execution module and a closed loop feedback optimization module. Temperature field distribution, mechanical vibration signals and partial discharge characteristics are collected in real time through a distributed sensing network and are subjected to tensor fusion with SVG operation parameters to generate a multi-physical field joint characteristic space, and a closed-loop feedback module associates cleaning efficiency data with fault characteristics, reversely corrects model parameters and optimizes a cleaning strategy. According to the invention, traditional threshold limitation is broken through, and closed-loop control of electromagnetic interference suppression, unknown fault dynamic diagnosis and cleaning accurate response is realized.

The invention relates to a centrifugal fan, a range hood and a design method of the centrifugal fan, and relates to the technical field of range hoods. According to the centrifugal fan, the three-section type lines of the first arc section, the second arc section and the third arc section of the arc section protrusion are designed differently, diffusion is conducted on the volute in the axial direction, compared with two-dimensional flow of a traditional volute, diffusion in the axial direction is considered, and therefore the flow efficiency of the volute is greatly improved. And three-dimensional flow of airflow in a flow channel in the volute is considered. On one hand, the arc section protrusions designed in this way can well eliminate angle vortexes, and airflow can flow in a flow channel in the volute better; secondly, the arc section protrusions designed in this way are better attached to real flow in the volute, and the air inlet efficiency is improved; and thirdly, the arc section protrusions designed in this way can eliminate the assembling gap between a volute and a case of a traditional range hood, noise of the range hood is reduced, and user experience is improved.

The invention discloses a gas compressor blade mean camber line design method, a gas compressor blade, a gas compressor and an aero-engine, and the method comprises the steps: S1, obtaining known design data, including an inlet blade angle theta in, an outlet blade angle theta out, a mean camber line starting point coordinate, a mean camber line end point abscissa, and turning angles delta theta 1, delta theta 2 and delta theta 4 of a first section arc, a second section arc and a fourth section arc, and abscissas of all tangency points; and S2, each section of arc is calculated through a geometric analysis method, a mean camber line is constructed after circle center coordinates, arc radiuses and tangent point coordinates of each section of arc are calculated, and the mean camber line is formed by sequentially and tangentially connecting four sections of arcs according to the sequence of convex, concave, convex and concave. The gas compressor blade mean camber line design method is good in adaptability and multiple in controllable point in the high Mach number state; therefore, the requirements of an advanced compressor are met; design parameters are greatly reduced, the optimizing period is greatly shortened, the adjusting efficiency is high, and the time is short.

The present invention provides a cryopump and a regeneration control method thereof. The cryopump includes a cryopump container, a cold shield unit, an adsorption array, a regeneration unit, and a refrigeration unit. The cold shield unit is installed inside the cryopump container, and the adsorption array is composed of an outer condensation shielding plate and an inner cryogenic adsorption plate, and the surface is electroplated and polished. The cooling structure adopts a combination connection method of a main cooling plate and an annular secondary cooling plate to realize the separate disassembly and assembly of the condensation shielding plate and the cryogenic adsorption plate. The regeneration control method monitors the pressure in the container in real time, calculates and processes the pumping speed data. When the pumping speed is lower than the set threshold, the system automatically starts the regeneration process and selects different regeneration strategies (primary, secondary, and complete regeneration) according to the environment and gas type. During the regeneration process, it is determined whether it is completed by temperature data. After the regeneration is completed, the system resumes normal operation and continues to evacuate. The overall process ensures the continued effectiveness and system stability of the cryopump.

A bracket assembly and a fan with a bracket assembly include: an installation bracket, the installation bracket being equipped with an installation part; and at least one bendable and shapeable supporting leg, the supporting leg being connected to the installation part. Therefore, users can connect the installation bracket to an external device, thereby attaching the bendable and shapeable supporting leg to the external device, so that the external device can be suspended or supported on an external object through the bendable and shapeable supporting leg. At the same time, a support angle of the supporting leg can be adjusted by bending the supporting leg to adjust an angle of the external device. Moreover, a total number of the supporting legs can be set to 3-10, so that the supporting legs can be combined with each other to form an octopus shape to provide stable support.

Module for mounting a turbomachine fan blade, including: a blade force take-up device, a blade support able to pivot about a radial axis and configured to be engaged axially inside the device, the support and the device being mutually configured to ensure a clamping of the support against the device and an axial retention of the support inside the device; the support and the device each including, on their respective surfaces in cooperation, an alternation of conical seats and recesses making it possible alternatively, on the one hand, when the recesses of one surface are in geometric correspondence with the seats of the other surface, to axially slide the support relative to the device, and on the other hand, when the seats of both surfaces are in geometric correspondence with each other, to prevent any axial sliding movement of the support relative to the device.

The present invention relates to an assembly (12) for a turbomachine, comprising: —an outer casing (15) made of half-shells; —an inner casing (14); —a plurality of guide vanes (13) mounted between the outer casing (15) and the inner casing (14), —a structural casing comprising a flange (23) which is radially inside the inner casing (14); and—a system (24) for blocking the inner casing (14) on the structural casing, comprising a generally annular tab (25) fixed to one of the inner casing (14) and the structural casing and a complementary chute (26) fixed to the other of the inner casing (14) and the structural casing, the chute (26) being configured to receive the tab (25) and to block it along the axis (X) with respect to the structural casing.

The utility model provides a purifier. The purifier comprises a shell, a filtering part and an impeller. The shell is provided with an air inlet and an air outlet; the filtering part is arranged at the air inlet; the impeller is arranged in the shell and can drive gas to enter the shell from the gas inlet, and the gas flows out of the shell from the gas outlet after flowing through the filtering part, and the impeller comprises a cover body, blades and a flow guide ring; the multiple blades are arranged in the circumferential direction of the impeller and connected with the cover body. The flow guide ring is located on the sides, away from the cover body, of the blades and connected with the blades. Wherein the flow guide ring extends in the axial direction away from the impeller in an arc shape from the side away from the cover body to the side close to the cover body, on one axial section of the impeller, the radius of the outer surface of the flow guide ring is the first radius, and the first radius is larger than or equal to 7.8 mm and smaller than or equal to 20.6 mm; on one axial section of the impeller, the central angle corresponding to the outer surface of the flow guide ring is larger than or equal to 52.6 degrees and smaller than or equal to 86.3 degrees. Therefore, the work efficiency is improved.

A dehumidifier is provided that may include a base with an external air intake on one side thereof; a case disposed on an upper surface of the base and having a suction grille formed on a rear surface thereof; a top cover disposed on an upper surface of the case and having a discharge port; a discharge cover that opens and closes the discharge port; a drain pan including a first portion that extends laterally to divide an internal space of the case into an upper space and a lower space, and a second portion that extends from a lower surface of the first portion and disposed on the base; a water tank disposed on the upper surface of the base and that stores condensed water generated during a dehumidification process; a compressor disposed on the upper surface of the base spaced apart from the water tank; a fan module disposed on the first portion and having an outlet that communicates with the discharge port of the top cover; a condenser mounted on the first portion at an intake side of the fan module; an evaporator mounted on the first portion behind the condenser; and a control box coupled to the second portion and disposed directly above the external air intake. The fan module may include a fan housing disposed on the first portion, and a fan accommodated in the fan housing. A dripping hole may be formed in the fan housing.

The invention provides a gas compressor moving blade tip clearance measuring method and device, and belongs to the field of aero-gas turbine gas compressors. The problems of low measurement precision, low measurement efficiency and small measurement range in the prior art are solved. The method comprises the following steps that an angle encoder is installed on a main shaft, and a three-dimensional laser profile measuring instrument is arranged on the blade tip side of a blade at intervals; the impeller is rotated, the three-dimensional laser profile measuring instrument scans the blade tip, and three-dimensional point cloud data of the whole circle of blade tip profile are obtained; after the casing and the impeller are assembled, a plurality of continuous blades on the impeller are detached, and the three-dimensional laser profile measuring instrument is arranged at the vacant position of the impeller; the impeller is rotated, the three-dimensional laser profile measuring instrument scans the inner wall of the casing, and three-dimensional point cloud data of the whole circle of the inner wall of the casing are obtained; processing data; registering the processed three-dimensional point cloud data of the blade tip contour and the processed three-dimensional point cloud data of the inner wall in the same coordinate system to form a registration model; and the blade tip clearance value of the whole circle is calculated. The method is mainly used for measuring the blade tip clearance.