646 results about "Pump pressure" patented technology

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 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 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.

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.

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 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 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 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 invention discloses a drilling pump pressure prediction method based on an artificial neural network, and the method comprises the following steps: S1, data collection; s2, data preprocessing; s3, constructing a neural network model; s4, model training and optimization; and S5, model verification and deployment. According to the method, multi-channel data fusion and time synchronization optimization are innovatively adopted, so that the data quality and consistency are improved; in combination with a deep neural network and a self-adaptive optimization strategy, the precision and generalization ability of pump pressure prediction of the drilling pump are improved; and an online updating mechanism is introduced, so that the model can be dynamically optimized according to real-time data, the defects of low prediction precision, poor adaptability and difficulty in real-time updating of a traditional method are overcome, and an efficient and reliable prediction means is provided for intelligent drilling control.

The invention discloses a mechanical arm spraying parameter regulation and control system for artificial rainfall simulation, particularly relates to the technical field of agricultural irrigation control, and is used for solving the technical problems of water pressure self-adaption lagging and spraying parameter instability during alternate irrigation mode switching caused by pipeline extension and retraction of existing mechanical arm irrigation equipment. According to the system, by detecting the length variation of a telescopic water pipe of the mechanical arm and the real-time water pressure value of a water pipe inlet, the flow entropy yield space gradient and the turbulent flow energy dissipation rate are calculated to generate the water pressure compensation amount; regulating and controlling the water pump pressure based on the water pressure compensation amount, and synchronously analyzing a target spraying parameter combination of the alternate irrigation instruction; pressure compensation and parameter adjustment are executed in a linkage mode in the moving process of the mechanical arm, and kinetic energy distribution is collected through a water drop impact sensor array; when the kinetic energy distribution uniformity does not reach the standard, the entropy production and turbulence calculation logic is reversely corrected; precise and stable control over spraying parameters under dynamic operation is achieved, and the multi-area and multi-mode switching requirement is met.

1. Name of the product in this design: Bottle body of a pump-pressed bottle. 2. Purpose of this design: For storing liquid contents. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model relates to the technical field of pressure testing, and discloses a tank body pressure testing device, which solves the problem of tank body pressure testing in the current market, and comprises a main tank body, a top sealing cover fixedly connected to the top of the main tank body, a supporting column fixedly connected to the bottom of the main tank body, and a pressure release valve arranged at the bottom of the main tank body, a heating box is fixedly connected to one side of the main tank body, a control machine body is fixedly connected to one side of the heating box, a pressure pump is fixedly connected to the other side of the heating box, and a side supporting table is fixedly connected to the bottom of the pressure pump. The stability of the supporting column in the supporting process is improved, and the testing accuracy is improved; and meanwhile, the cooling liquid circulates along the inner side of the circulating box, so that the thermal insulation layer can be uniformly and quickly cooled, the cooling efficiency of the main tank body is improved, and the pressure test time of the main tank body is shortened.

The invention discloses a water pump pressure pulsation diagnosis method based on variational mode decomposition and chaos theory, which belongs to the technical field of water conservancy equipment pressure pulsation fault diagnosis, and comprises the following steps: setting a pressure pulsation monitoring point, and collecting a pressure signal; decomposing the pressure signal at each monitoring point by adopting variational mode decomposition (VMD); performing spectrum analysis on each modal function of the pressure signal decomposed by the VMD, and extracting spectrum features; frequency components and pressure amplitude are extracted, and internal flow field state information is obtained; in combination with a chaos theory, obtaining different modal attractors and the maximum value lyapunov exponent lymax; and introducing the modal attractors obtained in the VMD and chaos theory analysis and the lymax into a weighted decision model, and obtaining pressure fluctuation information at different monitoring points in combination with influence weights. According to the water pump pressure pulsation diagnosis method based on the variational mode decomposition and chaos theory, the pressure pulsation occurring in the operation of the water pump is monitored, and damage possibly caused by abnormal pressure pulsation is prevented.

The invention provides a pump pressure control optimization method for controlling the water level of a pump room, which belongs to the field of PID control and specifically comprises the following steps: S1, sensing the current water level of the pump room in real time; s2, calculating a historical water level mean value, determining a pump room reference water level, and constructing a current adjustment error; s3, the pump pressure adjusting amount is calculated through an incremental pump pressure PID controller, and a current control signal is finally determined in combination with control output at the previous sampling moment; s4, performing online optimization on parameters of the incremental pumping pressure PID controller by adopting an improved bank interconnection system algorithm; the method specifically comprises the following steps: S41, constructing a self-adjusting offset coupling amplitude based on a distribution tensor and a diffusion adaptive coupling amount; s42, constructing an evolution co-integration criterion quantity based on the co-motion configuration tensor; s5, the control signal is output to a pump set frequency conversion control module, and a water pump is driven to adjust the output pressure; according to the method, high-precision regulation and control of the water level of the pump room are achieved through precise regulation of the pump pressure.

The invention provides a fire extinguishing system and a fire fighting truck thereof, and the fire extinguishing system comprises a rack, the main water pump, the pure water pipeline, the mixing pipeline, the water path pneumatic butterfly valve, the mixing path pneumatic butterfly valve, the water pump pressure gauge, the water path flowmeter, the mixing path flowmeter, the liquid mixer, the gas-liquid mixing module, the first component supply module, the expansion component supply module and the control module are mounted on the rack; the water outlet end of the main water pump is provided with a water pump pressure gauge, and then is connected with a pure water pipeline and a mixing pipeline in a forked manner; the starting ends of the pure water pipeline and the mixing pipeline are respectively provided with a water path pneumatic butterfly valve and a mixing path pneumatic butterfly valve; the first component supply module is connected with the water inlet end of the main water pump; and the at least one expansion component supply module converges and is connected to the front of the gas-liquid mixing module of the mixing pipeline. Two or more groups of fire extinguishing components can be mixed and foamed, and are integrated on the rack, so that independent movement is facilitated to support fire extinguishing.

The invention relates to the technical field of oil and gas exploitation, and discloses a complex well open hole plugging well completion device which comprises a casing pipe, an end socket in threaded connection with the top of the casing pipe, an end socket in threaded connection with the bottom of the casing pipe and an annular sinking groove formed in the side wall of the casing pipe. A rubber sleeve is fixedly arranged at the position, located at the annular sinking groove, of the side wall of the sleeve, a first feeding opening is formed in the position, located below the annular sinking groove, of the inner wall of the sleeve, a pipe groove is formed in the side wall of the sleeve, and the two ends of the pipe groove communicate with the annular sinking groove and the first feeding opening correspondingly; a supporting frame is arranged on the inner wall of the sleeve, a first pressure spring is fixedly connected to the top of the supporting frame, and a movable sleeve is fixed to the tail end of the first pressure spring. The stress limit of the pin shaft and the stress of the connecting sleeve are dynamically calculated through the pump pressure real-time adjusting system, precise closed-loop control of the pump pressure is achieved in combination with a temperature compensation model and pressure drop loss compensation, and the problems of pin failure and pressure overshoot caused by temperature change of a traditional device are solved.

The utility model relates to coffee machine auxiliary equipment technical field, specifically is a kind of coffee machine brewing device outlet structure, comprising: funnel-shaped outlet pipeline and its columnar output end, output end is connected with the communication sleeve of sealing ring belt, and is connected with waste water collection tank through telescopic hose, outlet pipeline side wall inserts food-grade cleaning agent tank, manually lifting type pump pressure mechanism is equipped in tank, and push cleaning fluid enters pipeline flushing through the opening and closing mouth of hinged sealing sheet control, waste liquid is introduced into collection tank in orientation. The device realizes efficient cleaning, waste water zero pollution, and convenient operation, applicable to various coffee machines.

The invention provides a drilling machine fault diagnosis, alarm and processing method and device.The method comprises the steps that operation data and logging data of a target drilling machine are obtained, and the operation data comprise at least one of motor torque, motor rotating speed, motor power and motor temperature; the logging data comprises at least one of bit pressure, rotating speed, pumping pressure, well depth and torque; performing timestamp alignment, data normalization, feature cleaning and missing compensation on the operation data and the logging data to construct a unified time sequence multi-modal feature set; and inputting the unified time sequence multi-modal feature set into a pre-trained large language model, performing anomaly diagnosis on the target drilling machine, and outputting an improvement suggestion. According to the scheme, the technical problem that existing drilling machine fault diagnosis is low in efficiency and accuracy is solved, and the technical effect of improving the accuracy, generalization and response speed of drilling machine fault diagnosis is achieved.

The multi-stage sliding vane pump comprises a first-stage pump body, at least one middle-stage pump body and a last-stage pump body which are sequentially connected, the first-stage pump body, the middle-stage pump body and the last-stage pump body are independently arranged and each provided with a rotor provided with a sliding vane, the rotors are sleeved with eccentric parts, the inner walls of the eccentric parts and the rotors are eccentrically arranged, and eccentric cavities are formed. The eccentric part is wrapped with a pump shell, an annular pump cavity is formed between the pump shell and the eccentric part, the eccentric part is provided with a plurality of flow distribution holes communicating with the pump cavity and the eccentric cavity, and the pump shell is provided with interstage holes communicating with the adjacent pump cavities. Pump shafts extending outwards are arranged at the two axial ends of the rotors, and the adjacent pump shafts are detachably connected in the axial direction, so that at least one pump shaft can rotate to drive the rotors in the first-stage pump body, the middle-stage pump body and the last-stage pump body to rotate synchronously; through the building block type framework of the first-stage pump body, the extensible middle-stage pump bodies and the last-stage pump body, the number of the middle-stage pump bodies can be linearly increased or decreased, accurate adaptation of pressure is achieved, and the pressure solidification bottleneck of a traditional multi-stage pump is broken through.