592 results about "Liquid column" patented technology

The invention discloses a collaborative enhancement energy consumption mechanism and a support arm type fan tower drum damping device with the collaborative enhancement energy consumption mechanism, and relates to the technical field of engineering structure vibration, the collaborative enhancement energy consumption mechanism comprises a liquid column lever assembly and a plurality of inerter damping units symmetrically installed at the end of the liquid column lever assembly, and each inerter damping unit comprises a shell; the hydraulic damper and the linear-rotation converter are sequentially and axially installed in the shell from top to bottom, when the liquid column inclines, the first connecting plate is driven to drive the piston rod to stretch out and draw back, the piston rod drives the flywheel to rotate through the linear-rotation converter, and therefore vibration energy is transmitted to a fixed foundation structure through the second connecting plate to be dissipated; the invention further discloses a supporting arm type fan tower drum vibration reduction device, displacement of the vibration transmission part is transmitted to the liquid column lever through the connecting piece, the inerter damping unit is driven to stretch out and draw back, a complete energy consumption chain of the tower drum, the vibration transmission part, the connecting piece, the liquid column, the inerter damping unit and the ground is formed, and it is guaranteed that energy is stably transmitted to a fixed foundation structure.

The utility model discloses a micro-flow measuring device, which comprises a weighing balance; the liquid collecting container is arranged on the weighing balance; the liquid outlet pipe comprises a horizontal liquid outlet section, and a liquid outlet is formed in the end part of the horizontal liquid outlet section; the capillary receiving tube comprises a horizontal tube section and a vertical tube section which are communicated with each other, the horizontal tube section is horizontally aligned with the horizontal liquid outlet section, a liquid receiving opening is formed in the end part of the horizontal tube section, and a liquid discharging opening is formed in the end part of the vertical tube section; a first distance is formed between the end face of the liquid receiving opening and the end face of the liquid outlet, so that liquid discharged from the liquid outlet is sucked into the liquid receiving opening at intervals, and the liquid discharging opening drips the liquid into the liquid collecting container at intervals. According to the utility model, the problem that a liquid column is easily formed between the liquid outlet pipe and the capillary channel or the distance between the liquid outlet pipe and the capillary channel is too large in the prior art due to vertical butt joint of the liquid outlet pipe and the capillary channel is solved.

The invention relates to the technical field of blood separation, in particular to a platelet concentration-based gravity separation system, which comprises a tension disturbance extraction module, a viscosity response positioning module, a sedimentation retarding judgment module, a platelet export judgment module and a concentration layer interface output module. According to the method, real-time extraction of tension change frequency and mutation amplitude is introduced, and a normalization processing mode of disturbance polymerization indexes is combined, so that a mechanical unstable area under tiny disturbance in the blood standing sedimentation process is effectively described, and the sensitive recognition capability on potential layered behavior changes is enhanced. Through continuous tracking of a viscosity behavior curve in a disturbance time period, an accurate time anchor point is provided for judgment of a subsequent liquid column motion state. On the basis of microscopic changes of the liquid column height and the rate, through combined judgment of the acceleration change trend and the attenuation amplitude, the settlement state is distinguished no longer depending on a macroscopic parameter threshold value, but is dynamically regulated and controlled through the change trend and a fluctuation sequence.

The invention relates to the technical field of measurement of mechanical vibration or ultrasonic waves, water sound waves or infrasonic waves, in particular to a vibration liquid column hydrophone calibration device and method based on laser interferometry, and the device comprises a laser vibration meter, a hydrophone to be measured, a liquid column cavity for suspending the hydrophone to be measured, and a vibration table connected with the liquid column cavity. The to-be-measured hydrophone is detachably connected with an adjusting and positioning mechanism, the adjusting and positioning mechanism is connected with a laser vibration measuring instrument for executing vibration measurement, the adjusting and positioning mechanism and the laser vibration measuring instrument are introduced, the problem that accurate calibration of the low-frequency hydrophone cannot be achieved in the prior art is solved, and through sound field modeling calculation and correction, accurate calibration of the low-frequency hydrophone is achieved. The technical problem that the uncertainty and deviation of a hydrophone sensitivity calibration result caused by a non-uniform sound field cannot be effectively reduced in the prior art is solved.

The invention relates to a gas well annulus gas leakage monitoring method and system. The method comprises the steps that the casing side pressure of an initial leakage point is determined; determining the gas leakage flow of the leakage point; determining a time step length required for generating a single bubble under the gas leakage flow; sampling by taking the time step length as a time interval, and obtaining a gas column volume and a liquid column volume in the annulus protection liquid in the current time step length; determining a target wellhead oil sleeve annulus pressure; the casing side pressure of the target leakage point is determined; if the casing side pressure of the target leakage point is smaller than the pressure in the pipe column at the leakage point, the gas column volume and the liquid column volume are updated and serve as the gas column volume and the liquid column volume of the next time step respectively; and the casing side pressure of the target leakage point is repeatedly obtained till the casing side pressure of the target leakage point is larger than or equal to the pressure in the pipe column at the leakage point, and it is determined that gas leakage in the gas well annulus is stopped. The problem that the leakage point casing side pressure detection result error is large due to the fact that the migration process of leaked gas in a liquid column section is ignored in the detection process is solved.

The invention discloses a CFD (computational fluid dynamics) simulation-based magnetofluid jet shear polishing device and method. The device comprises an industrial five-axis machine tool, a fluid circulation system, a jet polishing module and a CNC (computer numerical control) system. The jet flow polishing module and the machined workpiece 8 are installed on a workbench and a tool installation base of the industrial five-axis machine tool respectively, and five-axis polishing machining can be achieved under the control of a CNC numerical control system. The jet flow polishing module comprises a jet flow tool head and a rotating magnetic field generating device. The rotating magnetic field is applied to the jet flow outlet of the jet flow tool head, ferroferric oxide particles in the polishing solution are driven to be arranged in the magnetic line direction to form a chain structure, the viscosity of the polishing solution is remarkably improved, and the polishing solution is endowed with the high-speed self-rotating motion characteristic. High-speed rotation and enhanced viscosity of the liquid column generate stronger shearing force, so that efficient material removal on the surface of a workpiece is realized.

The invention discloses a liquid dropping bottle with bacteria-blocking and oxygen-blocking dual protection functions, which comprises a bottle body, a composite film bag arranged in the bottle body, a ventilation hole formed in the bottle body, a pump body arranged on the bottle body, a trigger movably arranged on the pump body, a liquid dropping column arranged on the trigger, and a first spring arranged in the pump body, the trigger abuts against the first spring, a pump core is arranged in the trigger, a one-way valve shaft is inserted in the pump core, a first ring groove is reserved between the one-way valve shaft and the pump core, a one-way valve plate is arranged on the one-way valve shaft, a pressure limiting deformation gap is reserved between the one-way valve plate and the one-way valve shaft, and a second spring is arranged in the one-way valve shaft. The second spring abuts against the one-way valve plate, and the one-way valve plate blocks the liquid outlet hole. The liquid dripping device can play a good role in resisting oxygen and bacteria during liquid dripping, and only quantitative liquid medicine can be squeezed out no matter how much force is used for pressing the trigger, so that the liquid medicine drips in the form of liquid drops and cannot be jetted.

The utility model provides a large-height-difference gravity liquid supply refrigerating system, which relates to the technical field of refrigerating systems and comprises a refrigerating compressor, an oil separator, a condenser, a first liquid storage device, an electric control valve, a gas-liquid separator, a heat exchanger, a second liquid storage device, a stop valve, a filter, a liquid supply electromagnetic valve, an electric control valve, an evaporator, a stop valve for a sensor and the sensor. The device comprises a micro gas-liquid separator, a stop valve, a one-way stop valve and a liquid level switch. According to the high-altitude-difference refrigerating system, the problems of energy consumption caused by a pump liquid supply mode adopted by a traditional high-altitude-difference refrigerating system and excessive refrigerant charge amount caused by multi-time liquid supply can be effectively reduced, and energy conservation and emission reduction are facilitated; the influence of a static liquid column of a large-height-difference gravity liquid supply system on heat exchange of the evaporator can be avoided; the refrigeration tail end adopts an oil-free cold carrying mode, so that the heat exchange efficiency of the evaporator can not be influenced by an oil film; in addition, gravity liquid supply is adopted in the system, the machine room can be arranged on the roof and does not occupy the storeroom volume, and the storeroom volume can be effectively increased.

The invention belongs to the technical field of oil and gas well development, and particularly relates to a shale gas well gas lift dredging method. According to the method, the gas lift pressure is obviously reduced to 40-60% through comprehensive means such as foam drainage liquid filling for reducing the gas well accumulated liquid density, short-time annular gas lift, wellhead return pressure reduction for the gas lift, oil jacket pressure balancing for reducing the hydrostatic liquid column height and alternate positive and negative lift, and multiple cooperation is conducted, so that the gas lift pressure is obviously reduced to 40-60%, the gas well recovery production progress can be accelerated, the gas lift effect is improved, and the gas well recovery efficiency is improved. The production recovery cost is reduced. In the process of lifting the deep shale gas well, gas well lifting can be achieved by optimizing gas lifting operation steps on the basis of existing gas lifting equipment, effective gas lifting can be achieved by means of the technical method under the influence of factors such as high temperature and high pressure, shaft corrosion and sand production of the deep shale gas well under different conditions, and the success rate reaches up to 80%.

The invention belongs to the related technical field of vibration control of floating type platform structures, and discloses an offshore wind turbine floating foundation and an offshore floating type wind turbine. The offshore wind turbine floating foundation comprises a floating platform, a damping plate and a tuning liquid column damper, and the tuning liquid column damper is arranged in the floating platform; the multiple damping plates are symmetrically arranged on the floating platform. The damping plate is of a trapezoidal structure and is connected to the floating platform through an elastic rotating shaft, and the damping plate is arranged in the axial direction of the floating platform. The offshore wind turbine floating foundation provided by the invention is relatively good in applicability and has a good vibration reduction effect.

The invention discloses a mobile air conditioner which comprises a refrigerant loop and a heat exchanger. The outdoor unit part is located on the lower side and comprises an outdoor heat exchanger, and a water collecting tank is formed in the bottom of the outdoor unit part; the indoor unit part is positioned on the upper side and comprises an indoor heat exchanger; the water fetching assembly comprises a water pump, and the water pump is arranged in the water collecting tank; one end of the spray pipe is communicated with a water outlet of the water pump, and a plurality of spray holes which are formed in the height direction at intervals are formed in the spray pipe; wherein the flow velocity v of the condensed water at the spray holes meets the relational expression: # imgabs0 #, Q is the flow of the water pump, N is the number of the spray holes, and d is the diameter of the spray holes. Condensate water is pressurized through the water pump to enter the spraying pipe and is sprayed out from the spraying hole to form the jet flow liquid column, the jet flow liquid column collides with the outdoor heat exchanger, the jet flow liquid column is broken into tiny fog drops, the purpose that the mobile air conditioner is free of water drainage in the high-humidity environment can be achieved, the user experience feeling is improved, and frequent water drainage of a user is avoided.

The invention discloses capsule dry ice capable of automatically generating gas in situ. The capsule dry ice comprises a capsule and dry ice, wherein the capsule is composed of a plurality of parts and is internally provided with a cavity; wherein the dry ice is placed in the cavity. According to the in-situ gas self-generating capsule dry ice, the sublimation deflation time of the dry ice is prolonged, the liquid column density is reduced, the problem that liquid drainage is not smooth after a low-pressure gas well (or an oil well) is fractured or shaft accumulated liquid is rapidly drained out of a shaft accumulated liquid production well is solved, and the single-well yield is increased. In addition, the method does not need to intervene in any underground equipment, the dry ice is low in price and wide in source, and simple, economical and efficient oil and gas well liquid drainage is achieved.

The invention discloses a condensate bridging backflow vapor chamber and a preparation method thereof, a cavity space is arranged in a shell, and the cavity space is provided with a first wall surface and a second wall surface which are opposite to each other. The surface of the first micro-nano structure of the first wall surface is condensed to form liquid drops, and condensate is spontaneously converged to a specific area at a long distance to form the liquid drops by utilizing Laplace pressure difference between the liquid drops with different curvatures and hydraulic communication of a liquid column in the first micro-nano structure. The hydrophilicity / wicking property of the second micro-nano structure of the second wall surface is superior to that of the first micro-nano structure, wettability difference between the first wall surface and the second wall surface is established, and the collected liquid drops rise and are in contact with the second wall surface to realize high-flux condensate bridging backflow. And the distance between the first wall surface and the second wall surface is adjustable, so that the condensate backflow frequency and the thermal resistance characteristic of the vapor chamber are continuously regulated and controlled. The problems that a traditional vapor chamber is small in area, low in critical heat flow and difficult to adjust in heat flow can be effectively solved.

The invention relates to the technical field of oil-water detection equipment, and discloses an oil-water detector and method based on a liquid mass resonance measurement principle. The oil-water detector based on the liquid mass resonance measurement principle comprises a parameter sensing unit which is used for contacting an oil-water mixed medium in a pipeline and comprises a current carrying body with a measurement cavity, a measurement probe arranged in the measurement cavity and a resonance body arranged in the measurement probe; and the data processing unit is in signal connection with the parameter sensing unit and comprises a signal transmitting module which is used for transmitting an audio frequency sweep frequency signal to the resonant body to excite liquid column resonance and transmitting electromagnetic short waves with a preset frequency to an oil-water mixed medium at the same time. According to the invention, direct measurement of the density and the dielectric constant is fused, the phase state is identified by using an intelligent algorithm, and the model is switched, so that the problem of failure of a single principle technology in a specific phase state is solved, and high-precision measurement in a water-in-oil state or an oil-in-water state in a full range from pure water to pure oil is realized.

The invention provides electroplating equipment and a cleaning method of the electroplating equipment, the electroplating equipment comprises a cleaning unit, the cleaning unit is configured to spray at least two liquid columns, the at least two liquid columns penetrate through a movable space and are sprayed to a wafer support ring, and the at least two liquid columns are separated from the wafer support ring under the condition that the at least two liquid columns are not shielded by the support column. Forming at least two non-overlapping cleaning areas on the wafer support ring, wherein the at least two non-overlapping cleaning areas are distributed along the circumferential direction of the wafer support ring; when the driving device drives the supporting column to drive the wafer chuck and the wafer supporting ring to do central rotation motion, at least one cleaning area is not shielded by the supporting column. According to the invention, through the arrangement of the double liquid columns, the cleaning dead angles generated by the supporting columns are complementally cleaned, the problem that the electroplating liquid is not thoroughly cleaned is avoided, and the wafer yield is greatly improved.

The invention provides an impurity removal device for a clear-pond tea saponin concentrated solution, which comprises a device support column and a device shell fixedly mounted at the top of the device support column, a liquid inlet column is arranged in the device shell, a liquid inlet is formed in the upper end of the liquid inlet column, a liquid storage box is fixedly mounted on the inner side of the device support column, and a liquid outlet is formed in the lower end of the liquid storage box. A liquid filtering device is fixedly installed at the center of the top of the liquid storage box, the bottom of the liquid inlet column is located at the center of the liquid filtering device, a filter screen disc is arranged in the liquid filtering device, and a transverse liquid distributing pipe and a longitudinal liquid distributing pipe are arranged at the top of the filter screen disc. Through the synergistic effect of the designed liquid inlet column, the filtrate device, the filter screen disc and the filter agent caulking groove, uniform permeation of the tea saponin concentrated solution in the filter agent is realized, and biological polysaccharide is effectively adsorbed and filtered by the composite filter agent, so that the proportion of pentacyclic triterpenoid saponin in the concentrated solution is remarkably increased. The desugared concentrated solution is light in color, so that higher efficiency is shown when wild trash fishes are removed in shrimp and crab culture.

The present invention provides a tuned liquid column damping and vibration reduction system for floating wind power. The system is arranged inside the wind turbine tower. Four groups of guide rails are arranged on the inner wall of the wind turbine tower, and an annular bottom plate is arranged at the lower side. A spring base and a spring are arranged on the annular bottom plate. The upper part of the spring is provided with a tuned liquid column ball damper riser, and a pulley block is located on the guide rail. The bottoms of the tuned liquid column ball damper risers are installed with a cross-shaped tuned liquid column ball damper horizontal pipe to communicate. A ball valve is installed in the middle of the tuned liquid column ball damper horizontal pipe, and a one-way double-opening valve, a valve position limiter, a switch valve, and a pressure sensor are installed in the middle of the branch pipe. A vibration sensor is installed at the top of the wind turbine tower. The system dynamically adjusts the natural vibration frequency of the system by coordinating the working liquid flow in the tuned liquid column ball damper riser and the tuned liquid column ball damper horizontal pipe, has the effect of three-dimensional semi-active vibration control, solves the problems of narrow frequency band and single control direction of the traditional system, and is more suitable for use in complex marine environments.

The invention relates to the technical field of industrial process state monitoring, in particular to a photoresist filling state monitoring system and method. The system is characterized in that a micro-pressure pulse control unit acquires a reflection pressure change signal, establishes a corresponding relation between liquid column length and pressure, and outputs a pressure fracture judgment result; the acoustic sensing and judging unit is used for collecting a liquid column fracture sound pressure signal, constructing a non-contact liquid column end point state recognition mechanism and outputting an acoustic fracture judging result; the multi-channel intelligent decision-making unit uses a double-state doubt-tolerant self-certification mechanism to judge whether a pressure fracture judgment result is true or false, and outputs a final liquid column fracture judgment signal in combination with an acoustic fracture judgment result; and the filling process data recording unit records end point judgment related parameters, fracture judgment results and end point control feedback information in each filling process. According to the invention, micropressure pulse application and reflection pressure signal analysis are combined, and acoustic determination is introduced, so that the terminal point state of the photoresist filling tail end liquid column is accurately monitored.

The invention relates to the technical field of medical instruments, in particular to a flusher and application thereof in ear canal treatment, the flusher comprises a needle tube and a liquid pushing column in sliding fit with the needle tube, one end of the needle tube is movably sleeved with a sleeve, a liquid outlet is formed in the side wall of the end, away from the liquid pushing column, of the sleeve, and a rotary pushing assembly is arranged between the needle tube and the liquid pushing column; and the sleeve is connected with the rotary propelling assembly, and the sleeve extends into the ear canal while rotating under the action of the rotary propelling assembly, so that the cleaning liquid in the needle tube rotatably flushes the inner wall of the ear canal through the liquid outlet. The sleeve rotates and extends into the ear canal under the action of the rotary propelling assembly, so that the cleaning liquid in the needle tube rotatably flushes the inner wall of the ear canal through the liquid outlet, the impact force of the cleaning liquid on the inner wall of the ear canal is guaranteed, a large amount of liquid medicine is prevented from entering the interior of the ear canal instantly, and the medicine applying frequency is reduced.

The present invention discloses a method and system for predicting gas invasion during drilling, including: continuously collecting audio signals in the wellbore liquid column during drilling; receiving audio signals, and performing spectrum analysis on the signals, determining the degree of sound wave attenuation in different frequency bands according to the spectrum analysis results, and judging whether gas invasion occurs underground based on the results; outputting and responding to gas invasion diagnosis results. The present invention can accurately predict early gas invasion phenomena without the need to arrange testing or monitoring instruments underground, and the implementation method is simple, safe and reliable, and the construction cost is low.

The invention discloses a self-setting packer and belongs to the technical field of petrochemical engineering. The device comprises an upper connector and a lower connector, a lifting sleeve is installed in an inner hole of the upper connector, and the lower end of the upper connector is connected with an upper pressing ring through a deblocking shear pin; a rubber cylinder shaft is fixedly mounted on the outer side of the lifting sleeve, and a balance piston, a sealing sleeve, an upper pressing ring, a rubber cylinder and a sealing push cylinder are sequentially arranged on the rubber cylinder shaft in a sleeving manner from inside to outside; the lower end of the rubber sleeve shaft is connected with a central pipe through a locking sleeve; the lower end of the central pipe is in threaded connection with a lower joint; the sealing push cylinder sleeves the outer side of the central pipe, and the inner wall of the upper part of the sealing push cylinder is in sealing fit with the outer wall of the locking sleeve to form a primary vacuum piston cavity; the lower end of the sealing push cylinder is in threaded connection with a lower-stage piston, and a starting piston is installed on the outer side of the lower-stage piston in a limited mode through a shoulder. The packer can directly seat a well mouth after descending into a well in place along with a tubular column, pressing is not needed, the tubular column does not need to be lifted and put down, and automatic setting of the packer is achieved through timing liquid inlet and liquid column static pressure.

The invention relates to the technical field of oil field water distributors, and discloses an eccentric water distributor and an anti-blocking assembly thereof.The eccentric water distributor comprises the anti-blocking assembly and a shell, the shell comprises an inner pipe and an upper outer pipe, a plurality of blind holes are formed in the upper surface of the inner pipe, and a vibration assembly used for generating vibration is arranged in each blind hole; a plurality of nozzles are arranged on the bottom surface of the upper outer pipe, a plurality of water spraying grooves are formed in the inner wall of the inner pipe, the inner wall of each water spraying groove is an inclined plane, and a pressure valve is arranged in each water spraying groove; through the mutual cooperation of the spray head and the water spray tank, two streams of opposite water flow can be generated, the two streams of water flow collide together, the inner wall of the cavity collapses firstly to form bubble interception, a rapid jet flow liquid column is generated in the center, and jet flow and collapse of the cavity can generate strong impact and cleaning effects on the inner wall of the cavity; therefore, the situation that after water injection is completed, part of sundries can flow back into the eccentric water distributor along with water, subsequent water is evaporated to form cakes, and a water conveying opening is prone to being blocked is avoided.

The invention discloses a water quality measuring device and method, and belongs to the technical field of analytical testing, the water quality measuring device comprises a light source, a first signal receiver and a buffer pool, the buffer pool is provided with a liquid inlet and a liquid outlet, the liquid inlet of the buffer pool is used for continuously inputting a to-be-tested sample, and the liquid outlet is used for continuously outputting the to-be-tested sample; the buffer pool is arranged in the buffer pool, water flow at a liquid outlet of the buffer pool forms a stable liquid column, the light source is arranged on the first side of the liquid column, the first signal receiver is arranged on the second side of the liquid column, light emitted by the light source penetrates through the liquid column and is received by the first signal receiver, and the first signal receiver is used for measuring the light intensity of the received light. Parameters to be tested in a water sample are tested in a non-contact mode, light emitted by the light source penetrates through the liquid column, and the change of a signal is detected through the first signal receiver and can be converted into the content / value of the parameters to be tested in the water sample, so that long-term reliable, accurate and stable water quality testing in various scenes can be met; the key technical problem urgently needing to be broken through in the current water quality monitoring field is solved.

The invention provides a test device and method for measuring the heat exchange performance of a thermosyphon evaporator, and belongs to the technical field of heat exchangers. The device comprises a refrigeration compressor, an oil-gas separator, a high-pressure condenser, a cooling tower, a circulating water tank, a circulating water pump, a liquid reservoir, a gas-liquid separator, a thermosyphon evaporator, a secondary refrigerant water tank, a secondary refrigerant pump and a mixing tank which are communicated with one another, and monitoring the measuring instrument for the test according to a specified time interval and recording data through the computer, and calculating the total heat transfer coefficient of the thermosyphon evaporator. By adjusting the height of the gas-liquid separator and utilizing the ratio of the mass flow measured at the liquid inlet of the thermosyphon evaporator to the gas mass flow of the gas-liquid two-phase flow measured at the gas outlet of the thermosyphon evaporator, the refrigerant circulation multiplying power under different liquid column static pressure heads is measured and calculated, and better test data support can be provided for the pipeline design of the thermosyphon evaporator.

The utility model discloses a Stirling heat engine teaching aid based on an auxiliary magnetic suspension system and a U-shaped liquid column, which comprises a support table, a glass U-shaped tube and a quartz tube, a high-frequency induction heater is arranged on the upper side of the support table, a heating induction coil of the high-frequency induction heater is sleeved on the quartz tube, the quartz tube is horizontally arranged, and the glass U-shaped tube is arranged on the quartz tube. A first sealing plug and a second sealing plug are respectively plugged at the two ends of the quartz tube, heat preservation steel wool is arranged at one section, close to the first sealing plug, of the interior of the quartz tube, and a heating iron ring is arranged in the center of the interior of the quartz tube and is positioned in a heating induction coil of the high-frequency induction heater. According to the utility model, through the design of the auxiliary magnetic suspension system and the U-shaped liquid column, the friction between the piston and the pipe wall is greatly reduced, the energy loss in the mechanical energy conversion process is effectively reduced, and the working principle of the Stirling heat engine and the application of the second law of thermodynamics can be intuitively displayed.

The utility model relates to an anti-slip device for an oil and gas well, which comprises a connecting pipe and an anti-slip mechanism arranged in the connecting pipe, oil and gas channels are arranged at the center of the connecting pipe and the center of the anti-slip mechanism, and a plurality of anti-slip flow channels are further arranged on the anti-slip mechanism. And the anti-slip flow channel is communicated with the oil gas channel through a plurality of liquid inlets and an annular liquid outlet. The device has no moving parts, is not easy to damage, does not occupy a central channel of a production pipe column, can prevent a liquid column from slipping without external force operation, greatly reduces the cost of oil and gas exploitation, and prolongs the service life of the production pipe column.

The invention relates to the technical field of new energy battery production, and discloses a new energy battery manufacturing-oriented process state monitoring system, which comprises a disturbance excitation module used for applying a controllable disturbance signal to a liquid column in a liquid injection process; the response acquisition module is used for acquiring a response signal of the liquid column under the disturbance effect; the state recognition module is used for recognizing the structural state of the liquid column based on the response signal and judging whether a liquid column discontinuous area or a bubble entrainment behavior exists or not; the control instruction generation module is used for generating a deviation correction control instruction when the liquid column state is judged to be abnormal; and the liquid injection execution module is used for receiving the deviation correction control instruction and executing liquid injection pause, exhaust or liquid injection rate adjustment operation. The system has the capability of active excitation and response acquisition of a liquid column state, the capability of state identification based on response behaviors, and the capability of process control of sending a correction instruction to a liquid injection execution module, and has the advantage of a process monitoring closed loop from abnormal identification to action response.

The utility model discloses a kind of liquid nitrogen storage tank pressure relief protection devices based on liquid column differential pressure control, belong to pressure vessel testing equipment field. Including liquid tank, air inlet and exhaust pipe and connecting pipe. Middle in liquid tank is provided with baffle, the baffle will the internal space of the liquid tank be divided into gas chamber and liquid chamber, liquid level control hole is opened on the side wall of the baffle far from the liquid chamber, the liquid level control hole of uppermost layer is located below the top edge of the baffle;The air inlet and exhaust pipe is vertically inserted in the top of the liquid tank, and the bottom end of the air inlet and exhaust pipe extends to below in the liquid chamber, the bottom end face of the air inlet and exhaust pipe is located below the liquid level control hole;The connecting pipe is vertically inserted in the bottom of the liquid tank, and the top end of the connecting pipe extends to in the gas chamber. The utility model is discharged by liquid column static pressure difference The pressure relief device of two-way protection of overpressure / negative pressure, especially applicable to the pressure test working condition of liquid nitrogen storage tank.

The engine system with communicating fluid vessels has first, second, and third fluid containers each containing a liquid fluid. At least one interconnecting lever conduit contains the liquid fluid and is rotatably coupled to the first, second, and third fluid containers. The interconnecting lever conduit is pivotal about an axis and defines a fluid passageway by which the first, second, and third fluid containers are in liquid fluid communication. At least one buoyant member and at least one holding tank are positioned in each of the first and third fluid containers. A tether is physically linking together the holding tank of each of the first and third fluid containers. Supplying the gas to the interior of the holding tank displaces some of the liquid fluid from the interior of the holding tank to increase a column height of the liquid fluid in the first, second, and third fluid containers.

The present application relates to a kind of three-dimensional pendulum tuning liquid inductance device, the inductance device includes tuning liquid column damper and tuning mass inductance container, tuning liquid column damper includes swing arm, ball hinge end head, swing arm connector, annular water tank and tuning liquid, swing arm one end is connected with ball hinge end head, the other end is connected with annular water tank by swing arm connector, tuning liquid is filled in annular water tank;Tuning mass inductance container is installed in the lower portion of tuning liquid column damper, ball hinge end head is connected with the structure to be damped, annular water tank swings and drives tuning mass inductance container to carry out energy consumption, the inductance device tuning period is adjustable.Compared with prior art, the present application has can control the vibration in each direction of the structure to be controlled, wide range of use;The parameters of each component can be flexibly adjusted to achieve the best damping effect, while tuning mass inductance container can realize the energy absorption of input structure with smaller space and achieve the two goals of energy dissipation and reduction of upper tuning liquid mass.