806 results about "Pump pressure" patented technology

The invention relates to the technical field of temperature regulation and control, in particular to a liquid cooling control method and system of a battery control device, in the liquid cooling control method and system, through real-time collection and area screening of temperature and power data, accurate recognition of a high-temperature area is achieved, a clear cooling requirement partition is provided, and the cooling requirement of a battery is met. A dynamic adjustment strategy of pressure and flow parameters of the liquid cooling pump is optimized through a genetic algorithm, the cooling response speed and control precision are improved while energy consumption and cooling efficiency are effectively balanced, the pump speed and the valve opening degree are adjusted in real time, temperature changes are rapidly responded through automatic control, gradual implementation of a cooling target is ensured, and the cooling efficiency is improved. The hysteresis in the heat management process is reduced, the temperature control effect is continuously evaluated through a fuzzy control algorithm, the cooling intensity is dynamically adjusted according to the monitoring result, efficient cooling is ensured, meanwhile, equalization of temperature distribution is achieved, and a systematic heat management framework is established through long-term data monitoring and continuous optimization of cooling operation. And efficient and stable operation of temperature management is realized.

The invention discloses a high-precision water pump pressure controller which comprises a pump box, a centrifugal impeller and an adjusting ring set. A bearing frame is arranged on one side of the pump box, a vortex tube and a lining plate are arranged on the surface of the pump box, a rotating speed sensor and a flow speed sensor are arranged on the inner side of the bearing frame and the inner side of the vortex tube respectively, a pressure sensor is arranged on the lining plate, and the output end of the sensor is electrically connected to a data processing module. The centrifugal impeller comprises a wheel seat, a sliding ring, centrifugal blades and a synchronous gear ring, and the centrifugal blades are meshed with a worm gear rack of the synchronous gear ring through transmission tooth grooves. The adjusting ring set comprises a sliding rod, a joint ring and a hand rotating ring and is used for controlling the synchronous gear ring to rotate so as to drive the centrifugal blades to deflect to adjust the exposed area of the centrifugal blades, and therefore dynamic adjustment of pressure output is achieved. The system can realize real-time monitoring and fusion analysis of parameters such as rotating speed, flow velocity and pressure, has the advantages of fast response, high adjustment precision, strong system stability and the like, and is suitable for a precise fluid conveying system.

The invention discloses a movable trolley for secondary grouting of a double-shield TBM, and belongs to the technical field of tunnel construction equipment. In order to solve the problems of non-uniform slurry mixing, inaccurate grouting pressure control, low automation degree and the like of existing double-shield TBM secondary grouting equipment, a slurry storage system and a grouting execution system are borne through a movable supporting table, and the slurry storage system achieves slurry storage and stirring regulation and control through double storage tanks, a spiral stirring paddle and a liquid level monitoring module; the grouting execution system achieves accurate pressure control through cooperation of a double-outlet grouting pump, a pressure sensor and a frequency converter. The central controller receives liquid level and pressure signals and intelligently regulates and controls the rotating speed of the stirring paddle, the rotating speed of the grouting pump and switching of the slurry storage tank. The movable trolley is mainly used for secondary grouting operation in the double-shield TBM construction process, the grouting efficiency and quality can be improved, and tunnel construction safety and stability are guaranteed.

The application discloses a processing method of gel candies, and belongs to the technical field of gel candies. The method comprises a control unit with multiple independent pouring units, each pouring unit comprising a pouring head and a temperature control module, and the following steps are performed: S1: initial sensing and parameter setting; S2: a staged dynamic pouring step; S201: a starting stage, in which pouring is started at P0 and the F0, and lasts for a predetermined starting time Δt1; S202: a stable stage, in which after Δt1 ends, a control mode based on real-time viscosity feedback is switched to, the heating power is adjusted to maintain the real-time viscosity μ of the material in a target range [μ min , μ max ], and pouring is performed at a basic pump pressure F base . Through the staged dynamic control, the application realizes the precision and high efficiency of the gel candy pouring process.

The utility model discloses energy-saving full-automatic variable-frequency constant-pressure water supply equipment, which relates to the technical field of water supply equipment and comprises a pressure tank, a water inlet flange is fixedly arranged at the top end of the pressure tank, a water outlet pipe is fixedly arranged at the bottom end of the pressure tank, and an extension pipe is fixedly arranged at one end of the water outlet pipe. And a plurality of water pumps are arranged on one side of the pressure tank. The pressure tank and the water pump are arranged and connected in series, the water pump can pressurize water in the pressure tank in the water supply process so as to ensure that the water pressure of a pipe network is constant, and the filter screen is arranged in the pressure tank and is of a C-shaped structure, so that the water pressure of the pipe network is kept constant in the water filtering process. Impurities can be collected in the filter screen, so that the filter screen is convenient to disassemble and clean, and the design of the C-shaped structure can prevent the impurities from falling off in the disassembly process of the filter screen, so that the water quality in the equipment can be prevented from being influenced by the disassembly of the filter screen.

The invention provides an electric pump pressure type liquid rocket engine and a carrier rocket. The electric pump pressure type liquid rocket engine comprises a gas-driven generator system, an electric pump pressure type liquid rocket engine body and an energy management system, and the gas-driven generator system is electrically connected with the energy management system; and the electric pump pressure type liquid rocket engine is electrically connected with the energy management system. According to the technical scheme, the rocket is prevented from carrying a large-mass battery through the generator system, and the highest-efficiency operation of the generator under all working conditions is realized through the energy management system. According to the technical scheme, the energy loss is small, the structural mass is light, the development and application cost of the carrier rocket is reduced, and the reliability of the carrier rocket is improved.

The invention discloses a multistage self-locking type ball catching circulating short section for half-way well cementation and a control method, and relates to the technical field of oil well cementation operation, the multistage self-locking type ball catching circulating short section comprises a short section assembly, the short section assembly comprises an outer shell, a discharge port is formed in the top of the outer shell, a displacement assembly is arranged in the outer shell, and the short section assembly comprises a sliding sleeve connected into the outer shell in a sliding mode; a containing groove is formed in the outer ring of the sliding sleeve, a first ball is slidably connected into the containing groove, an upper connector is fixed to one end of the outer shell, and a lower connector is fixed to the other end of the outer shell. The non-return structure has the beneficial effects that through the arrangement of the short section assembly and the limiting assembly, after the second ball body is put in, the displacement assembly can be driven to slide and displace in cooperation with continuously-fed media and pumping pressure, non-return locking operation is completed, the second ball body is prevented from being disengaged at will, the bypass requirement is well met, and compared with a traditional spring and rubber part non-return structure, the non-return structure is simple in structure and convenient to use. The stability is better, and the well cementation operation is well carried out.

The invention provides a popcorn sole forming machine facilitating mold forming and discharging, and relates to the technical field of shoe material production equipment. The popcorn sole forming machine facilitating mold forming and discharging comprises a machine table, a shoe mold used for forming a sole, a hydraulic device used for driving the shoe mold to be closed and separated, a compressed air control device, a feeding device, a water vapor control device, a cooling water control device and a controller. The oil spraying device is arranged in the machine table, before forming, the second air cylinder drives the atomization spray head to move above the forming cavity at a constant speed, the micro flow pump extracts the release agent, then the release agent is sprayed out through the atomization spray head under pumping pressure to form uniform mist, and the release agent can form a uniform film shape on the surface of the forming cavity; the oil spraying device is driven by the first air cylinder to be stored in the rectangular opening during production, the upper surface of the movable plate is flush with the upper wall of the machine table, and production operation is not affected.

The invention provides a rheological parameter regulation and control method in a continuous preparation process of a paste filling material, and relates to the technical field of mine filling processes. According to the method, aiming at the condition that the material level of the stirrer is in a safety interval, pumping pressure-stirrer material level double-rate interval control is adopted, that is, the material level of the stirrer is maintained in a safety range required by a process, and meanwhile, the pumping pressure for conveying a filling material required by underground filling is ensured; after the pumping pressure and the material level of the stirrer are stabilized, aiming at the condition that the paste concentration is not in a set concentration range, paste concentration-stirrer torque double-rate interval control is adopted, and the paste concentration, the stirrer frequency and the stirrer torque are regulated to be stabilized in the set range; the prepared paste material has stable rheological property while having stable concentration. According to the method, a multi-parameter accurate regulation and control technology is adopted, and continuity, automation and intelligentization of the mine filling process are achieved.

A method for grouping hydraulic functions associated with an agricultural implement includes accessing parameter data associated with hydraulic fluid used to drive a plurality of hydraulic functions of the implement, the hydraulic fluid being supplied from one of at least two pumps. The method also includes determining delivery pump pressures for the pumps for each of a plurality of different pump / function combinations based at least in part on the hydraulic parameter data and determining a power parameter requirement for the pumps for each of the different pump / function combinations based at least in part on the delivery pump pressures. In addition, the method includes selecting a desired pump / function combination based at least in part on the power parameter requirement, and controlling an operation of a plurality of switching valves such that the hydraulic fluid is supplied for driving the hydraulic functions in accordance with the desired pump / function combination.

The invention discloses a dredge pump power monitoring and controlling method during long-distance complex slurry conveying of a trailing suction dredger, which comprises the following steps of: firstly, monitoring parameters, mounting a slurry densimeter, a pressure transmitter and a flow meter at an outlet of a dredge pump pipeline, collecting the slurry density rho, the pump pressure P and the flow velocity v in real time, measuring the density by the slurry densimeter; the pressure transmitter obtains pressure data, and the flow meter monitors flow. Secondly, pipe blockage risk judgment and power adjustment are carried out, judgment is carried out through two modes, and in the first mode, flow length related pipeline loss judgment is calculated based on the real-time density rho and the flow velocity v in combination with the collection time interval; in the second mode, the total pipeline resistance is calculated through a fitting formula based on the density rho and the flow velocity v under the rated flow and compared with the pump pressure P for judgment. The power of the dredge pump is increased immediately when the pipe blocking risk is judged in any mode; collecting data every 30 minutes after the self-dredge pump is started for 30 minutes, and adjusting the constant A according to the relationship between the density and the viscosity when the accumulated flow length reaches a specific condition; the method can ensure smooth conveying of the slurry and improve the construction efficiency and the equipment safety.

The invention relates to the technical field of automatic control of drilling parameters, in particular to a coal bed gas underground drilling construction parameter optimization method and system.The method comprises the following steps that sound wave response signals are obtained, propagation characteristics are calculated, bit pressure data are aligned, abnormal fluctuation is recognized, pumping pressure information is extracted, and the change trend is analyzed; and comparing the consistency of the regulation and control points and organizing regulation and control actions to finally form a coal-bed gas well drilling parameter optimization control flow. According to the method, accurate calibration of an abnormal state is achieved by constructing a sound wave propagation delay sequence and synchronizing bit pressure response, key regulation and control fragments are recognized in combination with a pumping pressure change trend, a time sequence coupling relation between bit pressure and pumping pressure is established, regulation and control action combinations meeting response consistency are extracted, and sequential organization is conducted; a control instruction set with continuity and pertinence is formed, collaborative recognition and linkage regulation and control of multi-parameter change trends are achieved, and stability and response coordination in the construction process are improved.

The invention relates to the technical field of engineering machinery control, in particular to a fuel efficiency optimization method and system based on multi-modal visual fusion, and the method comprises the steps: obtaining an environment image around engineering machinery, generating a disparity map, and carrying out the three-dimensional reconstruction; according to the reconstructed image and a pre-stored engineering machinery joint model, obtaining three-dimensional coordinates and spatial postures of the movable arm joint; classifying the current working conditions of the engineering machinery according to the three-dimensional coordinates and the spatial attitude of the movable arm joint, the state parameters of the engineering machinery and the reconstructed image, and determining the action states and slope repairing angles under different working condition types; and according to the working condition type, the action state and the slope repairing angle, based on a pre-constructed fuel mapping database, obtaining a corresponding load intensity coefficient, an engine rotating speed, a main pump pressure, a fuel supply correction coefficient and torque compensation, and adjusting the current state parameters of the engineering machinery to realize fuel optimization.

A dam termite nest integrated positioning grouting killing device and method comprises a drilling grouting device, the drilling grouting device is connected with a pressure pump through a first connecting pipe, the pressure pump is connected with a submersible pump and a water pipe through a three-way pipe, the water pipe is connected with a stirring tank through a fourth connecting pipe, and termite nest filler is arranged in the stirring tank. The termite nest filling agent is connected with a pressure pump through a sludge pump and is poured and filled into a dam termite nest through a drilling and grouting device; the drilling grouting device is provided with a lifting drill bit, the lifting drill bit is of a hollow structure and communicated with the first connecting pipe, and the lifting drill bit is connected with one or more hollow drill pipes. The termite nest located in the dam is accurately found through the drilling and grouting device, then the termite nest filler is used for filling to complete the grouting and killing function, positioning is accurate, the killing effect is good, and the dosage of chemicals is small.

The present application relates to a kind of fracturing perforation position selection method, belong to a kind of coalbed gas horizontal well development technical field, specifically relates to a kind of coal seam roof horizontal well fracturing perforation position selection method.The present application provides new method and train of thought for the optimal perforation position of coal seam roof horizontal well, can reduce the problem of pump pressure being too high, sanding difficulty in reservoir reconstruction process, improve the reconstruction efficiency of coal seam.

The invention discloses a flow demand control method and device for electric engineering machinery, and the method comprises the steps: determining a pilot handle opening value according to a pilot handle opening voltage value; according to the pilot handle opening value and a preset hydraulic oil demand response characteristic value, a hydraulic oil demand flow value is obtained; a main pump pressure value is obtained, the hydraulic oil demand flow value is dynamically corrected according to the main pump pressure value, and a corrected flow value is obtained; and the current of the first proportional valve is adjusted according to the corrected flow value, and the opening value of the first proportional valve is controlled. The flow demand is corrected in real time through the main pump pressure, high-pressure working condition overpower output is avoided, the overflow frequency is reduced, and dynamic pressure correction is achieved.

The invention relates to the technical field of intelligent sand supply, in particular to an intelligent dynamic fracturing sand supply system and method, and the system comprises a liquid supply data acquisition module, a pumping pressure boundary identification module, a target sand ratio correction module, a supply and demand speed difference adjustment module and a control parameter feedback module. According to the method, fluctuation nodes can be identified and key changes can be captured by acquiring the pressure and time information of the fracturing process and constructing the index sequence, so that flow abnormality is prevented from being neglected, pressure differences are compared, trigger signals are generated, sand ratio parameters are dynamically corrected along with real-time pressure, supply and demand deviation caused by sand ratio imbalance is avoided, and the accuracy of the fracturing process is improved. The target sand supply rate is compared with the actual speed of the auger, the running state is corrected in time, over-supply or lag caused by speed difference accumulation is reduced, sand supply execution and the target rate are correspondingly arranged in the time dimension, a closed-loop feedback relation is formed, the sand supply process has the self-adaptive adjustment capacity, stability and accuracy are improved, and the sand supply efficiency is improved. And quick response to sudden working conditions is enhanced, and the risk of manual intervention is reduced.

The invention relates to the technical field of a multi-field coupling simulation shield pump pressure-bearing component service life prediction method, particularly discloses a multi-field coupling simulation shield pump pressure-bearing component service life prediction method, and aims to solve the problem of service life prediction distortion caused by difficult accurate modeling of a nonlinear coupling effect in traditional single field domain analysis. The method comprises the following steps: constructing a three-dimensional self-adaptive grid model covering a pressure-bearing shell, a flange and a bearing seat; defining multi-physical field boundary conditions containing temperature gradient, pressure pulsation, electromagnetic excitation and time-varying creep parameters; and executing thermal electromagnetic full-coupling transient simulation to obtain a stress-strain evolution field. According to the method, through strong coupling modeling, time-varying constitutive embedding and data closed-loop correction, crack dynamic tracking and life rolling prediction under extreme working conditions are realized, and failure early warning perspectiveness and engineering decision reliability are remarkably improved.

The invention relates to a soft soil foundation CFG pile construction method, and belongs to the technical field of soft soil foundation treatment. In order to solve the technical problems that the quality of a pile body is difficult to control and the pile forming efficiency is low in the soft soil foundation construction, the method is characterized by comprising the following steps: firstly, flattening and compacting a site, measuring and lofting to mark a pile position, and building a ground pumping system comprising a concrete truck pump and a high-pressure pipeline; then the long spiral drilling machine is moved to the pile position, drilling is conducted according to the initial speed, the motor current is monitored to range from 150 A to 180 A, and after it is judged that the long spiral drilling machine enters the hard soil layer, the speed is adjusted to range from 0.4 m / min to 0.9 m / min, and drilling is conducted to the designed pile depth; then the CFG mixture is pumped and poured, when it is monitored that the pumping pressure reaches 0.5-0.9 MPa, the drill rod is lifted at the initial speed, and the pumping displacement and the lifting speed are adjusted in real time according to the pressure of an outlet in the bottom of the drill rod; and finally, pouring to the pile top elevation, covering with wet linen, and watering for maintenance. The method is mainly used for CFG pile construction of the soft soil foundation, and the pile forming quality and efficiency can be improved.

The invention discloses a true triaxial hydraulic fracturing multi-scale monitoring system fusing acoustic emission, ultrasonic wave and strain linkage, and relates to the technical field of true triaxial hydraulic fracturing, which comprises a device main body, a horizontal stress loading system, a hydraulic servo pump pressure module, an acoustic emission monitoring system, a crack strain monitoring system and an ultrasonic monitoring system, according to the true triaxial hydrofracture multi-scale monitoring system integrating acoustic emission, ultrasonic wave and strain linkage, the hydrofracture process is comprehensively monitored through the acoustic emission monitoring module, the ultrasonic wave monitoring module and the strain gauge array monitoring module in an experiment, and the three monitoring means are matched with one another; and a data support with high temporal-spatial resolution is provided for the whole crack evolution process.

The invention discloses an air supply method and an air supply system for a pulsating type ventricular assist device. The air supply method comprises the following steps: setting working parameters of the pulsatile ventricular assist device; the stroke range of the piston in the air pump is determined according to the working parameters; obtaining a piston position piecewise function based on the stroke range; the piston is driven to be at the working zero point, the air pump communicates with the pre-inflation equipment through the pre-inflation pipeline, the air pump is inflated through the pre-inflation equipment, and air pump pressure initialization is completed; and the pre-inflation equipment is disconnected, the air pump is communicated with the pneumatic execution part through the air supply pipeline, a piston in the air pump reciprocates according to the determined piston position piecewise function, the pressure in the air pump is periodically changed, and the pneumatic execution part is periodically and intermittently driven to work according to the sequence of inflation, high-pressure keeping, deflation and low-pressure keeping. The problem of air supply of a balloon, an extracorporeal membrane cavity and the like of an existing pulsatile ventricular assist device is solved.

The utility model belongs to the technical field of water treatment agent feeding, and provides a pressure pump device for water treatment agent feeding, which comprises two pressure pump units, the pressure pump unit comprises a pump, a pressure gauge and a main pipe; the pump inlet is communicated with the main pipe through a liquid inlet pipe, a third valve is arranged on the liquid inlet pipe, the pump outlet is communicated with a liquid outlet pipe, a fifth valve is arranged on the liquid outlet pipe, the pressure gauge is arranged on the liquid outlet pipe through a pressure detection pipe, and a first valve is arranged on the pressure detection pipe; the pressure pump unit further comprises a back pressure valve and a return pipe, one end of the return pipe is communicated with the main pipe, the other end of the return pipe is communicated with the liquid outlet pipe, the back pressure valve is arranged on the return pipe, and a second valve is arranged on the return pipe. According to the device, the two pressure pump units are arranged for chemical feeding, and the two pressure pump units are standby for each other, so that interruption of chemical feeding can be avoided. By arranging the backflow pipe, when the pressure of the liquid outlet pipe exceeds the set pressure of the back pressure valve, the back pressure valve can be automatically opened, and the medicament in the liquid outlet pipe flows back into the main pipe.

The invention provides a well bottom ECD accurate determination method based on a field multi-point cycle test, and belongs to the technical field of petroleum and natural gas drilling engineering. Comprising the following steps: selecting at least three different-depth test points on a casing section, and synchronously obtaining pump pressure, drilling fluid rheological parameters and borehole-drill rod geometric data; preprocessing the data; calculating annulus pressure loss, drill rod pressure loss and drill bit pressure loss of each test point based on an API standard formula; establishing a pumping pressure-pressure consumption associated linear equation set and solving annulus and drill rod pressure consumption correction coefficients; and outputting a shaft bottom ECD for eliminating naked eye interference in combination with the real-time drilling parameters and the inversion coefficient. According to the method, the multi-point cycle test and the dynamic inversion model are combined, the deviation between the theoretical model and the actual working condition is quantified through the correction coefficient, the weighted least square and the matrix condition number pre-judgment technology are combined, the problem of ECD calculation misalignment of a traditional method is solved, and the pressure control precision and safety in a complex drilling scene are remarkably improved.

The invention relates to the technical field of automatic control, and discloses an automatic control method and system for bearing grease injection. The method comprises the steps that weight data in the grease injection process are collected, a weight change curve is obtained after filtering, and the flow pulsation amplitude is calculated; when flow pulsation is abnormal, pump cavity volume and pipeline impedance parameters are obtained, pump speed correction is calculated based on pressure feedback, the pump rotating speed is adjusted, and preliminary stable flow is obtained; the state of the servo system is monitored based on the initial stable flow, if the resonance peak value exceeds the limit, servo parameters are optimized, the pumping pressure is adjusted in combination with a temperature compensation mechanism, and a compensation pressure signal is obtained; the overshoot of the pressure signal is evaluated, if the overshoot exceeds the limit, the control parameters are adjusted, the pressure deviation is corrected, a final grease injection instruction is generated in combination with backpressure suppression, precise grease injection is executed, and the weight accumulation change is monitored to judge the completion state; and the deviation between the actual total grease injection amount and the target amount is calculated, the current parameter is recorded as the initial set value of next grease injection if the precision reaches the standard, and the control precision of the grease injection process is improved.

The invention discloses a water pump pressure real-time monitoring system, and relates to the technical field of water pump monitoring, the water pump pressure real-time monitoring system comprises a processing module, a parameter acquisition module and a water pump execution module, the parameter acquisition module is used for obtaining water pump working data and transmitting the water pump working data to the processing module for calculation and storage, and the water pump working data comprises real-time water pressure and water outlet quality data; the processing module presets an index water pressure Pt and index effluent quality data Qt based on a preset water pump working requirement, and after receiving the real-time water pressure and effluent quality data, the processing module calculates a working state value W through a formula. The multiple water outlet monitoring units are arranged at the water outlet of the water outlet pipe of the water pump in the diameter direction, comprehensive collection of water pressure and flow velocity data of the water pump at different heights is achieved, compared with a traditional single-point monitoring mode, more complete water flow state information can be obtained, and the monitoring precision and stability are improved.

The invention relates to the technical field of material filtering and separating, in particular to a milk material anti-blocking filtering device and application thereof in rose yoghourt preparation, the milk material anti-blocking filtering device comprises two groups of pipe shells, and filter elements are detachably mounted in the pipe shells; the switching structure is connected with the two sets of pipe shells, and the switching structure can make milk alternately flow in the two sets of pipe shells; the two sets of pump pressure assemblies are connected with the first discharging openings in the two sets of pipe shells correspondingly, and coaxial wheel sets are arranged on the pump pressure assemblies; the transverse moving structure is connected with the switching structure, an abutting piece matched with the coaxial wheel set is arranged on the transverse moving structure, and an inclined part is formed on the abutting piece; and the supporting plate is in rolling fit with the coaxial wheel set and can be separated from the abutting piece after the abutting piece drives the coaxial wheel set to move to a preset position, so that the filtering effect and the product quality are improved.

The present invention provides a high-energy water-pressure down-the-hole hammer based on impact rotary drilling technology. The structure of the high-energy water-pressure down-the-hole hammer based on impact rotary drilling technology includes an upper sub, a housing, a filter fixing sleeve, a drain valve cover, a fixed valve sleeve, a main valve, a piston hammer, a drill bit, a first support sleeve, a second support sleeve, a first sealing piston, a second sealing piston, a guide sleeve, a stop ring, and a fixed casing. The hammer internally is provided with a first chamber, a second chamber, a third chamber, and a control chamber. The main valve moves up and down along the cylindrical chamber inside the fixed valve sleeve, and the piston hammer moves up and down along the annular groove inside the fixed valve sleeve. Inside the fixed valve sleeve, there are provided a first control flow channel, a second control flow channel, and a third control flow channel that connect the four chambers and the outside. The high-pressure clear water in the first chamber pressurizes and depressurizes the second chamber, the third chamber, and the control chamber through the three control flow channels. The up and down movement of the main valve, the accelerated impact and decelerated braking of the piston hammer are mainly achieved by relying on the static pressure of the high-pressure clear water, driving the piston to do work, performing high-frequency heavy-load impacts on the rock, and improving the pump pressure and drilling efficiency.

The invention discloses a heat exchange system applied to fused salt energy storage and heat supply and an operation method of the heat exchange system, and particularly relates to the field of fused salt energy storage and heat supply. S2, starting of a high-temperature loop is completed through starting of a thermal medium loop, starting of a circulating pump, flow adjustment and pressure correction of a buffer tank; s3, starting the molten salt loop and controlling the temperature, regulating the opening degree based on a formula to stabilize the flow of the high-temperature loop, synchronously controlling the total flow of the circulating pump, and judging that the loop is started when the flow, molten salt outlet temperature and pump pressure stable conditions are met; an intermediate medium of the heat exchange system is in a liquid state and is driven by the circulating pump, and operation reliability and economical efficiency are higher than those of a gaseous medium; the heat exchange system can be suitable for heat exchange with the temperature difference larger than 500 DEG C, and heat stress safety and medium safety of the heat exchanger can be guaranteed; the investment cost of the pump is reduced by reducing the design temperature of the circulating pump.

The invention discloses a dynamic area adjustment-based surgical operation box and a fluid self-adaptive control method thereof.The dynamic area adjustment-based surgical operation box comprises a box body, a fluid circulating system and a control system, the box body comprises at least two sets of wall plates capable of relatively moving, and the wall plates are connected through a telescopic guide mechanism to form a variable-volume cavity; an area adjustment driving assembly is arranged between the wall plates and comprises a linear actuator and a displacement sensor; the fluid circulation system comprises a fluid pump communicated with the variable volume cavity, a pressure regulating valve and a multi-parameter sensor group; the multi-parameter sensor group comprises a pressure sensor, a flow sensor and a temperature sensor; the control system comprises a main control module and a self-adaptive algorithm module, the main control module is connected with the area adjustment driving assembly and the fluid circulation system, and the self-adaptive algorithm module is configured to establish a dynamic balance model, output a cooperative control signal through a resolving model and preferentially trigger a wallboard displacement compensation mechanism when it is detected that pressure fluctuation exceeds a threshold value.

The utility model discloses a comprehensive test platform for hydraulic accessories, and belongs to the technical field of hydraulic oil sources. Comprising a hydraulic pump station, the hydraulic pump station is connected with a control cabinet, and the hydraulic pump station comprises a shared oil tank, a first electric pump pressure supply system and a second electric pump pressure supply system; the shared oil tank is connected with the first electric pump pressure supply system and the second electric pump pressure supply system; the first electric pump pressure supply system and the second electric pump pressure supply system are different in displacement and pressure; a plunger pump is controlled through a motor, a pressure source is provided, then a proportional pressure regulating valve of a control cabinet is used for regulating the pressure to preset pressure, a connector on the control cabinet is connected with a tested hydraulic accessory through a hydraulic hose, and performance parameters of the tested hydraulic accessory are tested. The device can provide multiple groups of adjustable oil supply output, pressure supply monitoring, system flow detection, pressure reduction output, reversing output, oil leakage test, air tightness test and other functions for a tested hydraulic accessory, and can be used for common hydraulic accessory function test requirements.