1674 results about "Inlet flow" patented technology

The invention discloses a magnetic suspension high-speed motor based on a centrifugal air cooling structure, and belongs to the technical field of magnetic suspension high-speed motors, the magnetic suspension high-speed motor comprises a main body assembly, the main body assembly comprises a front end cover, a motor shaft, two magnetic suspension bearings, a rotor, a stator core, a casing, a rear end cover, a protective cover, a protective net, a flow guide fan and an exhaust hole; the rotor is installed on the outer side wall of the motor shaft. When the motor shaft rotates, the flow guide fan is driven to rotate at a high speed, negative pressure is formed at the position of the exhaust hole, at the moment, external air flows into the heat dissipation flow channel through the air inlet flow channel, absorbs heat in the stator iron core, then flows into the machine shell, flows in the gap between the rotor and the stator iron core and is finally exhausted from the exhaust hole, and therefore heat dissipation is achieved. In the flowing process of the air, heat in the stator core and the rotor can be taken away, so that heat accumulation is avoided, and efficient heat dissipation of the stator and the rotor is realized.

The invention discloses a micro-channel device for phase change sweating and an application method, and belongs to the technical field of thermal protection of aircrafts. The structure sequentially comprises a solid inner wall, a transportation phase change layer and a sweating outer wall surface from inside to outside, and is mainly composed of a bottom plate, a porous rib wall, a solid rib wall, a solid outer wall, an inlet flow channel, a main flow channel, a branch flow channel and the like. The bottom plate is a solid inner wall and is used for supporting and conveying; the flow channel can be divided into an inlet flow channel, a main flow channel and a branch flow channel, and a cooling medium sequentially passes through the inlet flow channel, the main flow channel and the branch flow channel; a cooling medium is injected into an external flow field through the porous rib walls which are periodically arranged; the solid rib walls isolate the adjacent main runners, so that a cooling medium flows out through the porous rib walls; the outer surfaces of the porous rib walls of the solid outer wall are flush to form a sweating outer wall surface; the device has the advantages of being integrated in structure, small in thickness, uniform in sweating and efficient, and a new way can be provided for long-time cross-domain sailing thermal protection of high-speed aircrafts.

The invention provides a thermal behavior experiment system and method under a narrow rectangular channel reflooding cooling condition. The system comprises a heating water storage tank, a nitrogen tank, a steam tank, a shield pump, a preheating section, a first direct-current power supply, a second direct-current power supply, a narrow rectangular channel test section, a steam-water separator, a surge tank, a flow control valve, a silencer and an electromagnetic valve. The experimental working medium is deionized water, and re-submerging cooling experiments under different system pressures, working medium supercooling degrees, heating wall surface heat flux densities, working medium submerging speeds, heating wall surface initial temperatures and channel interior initial liquid levels can be carried out on an experimental section of a narrow rectangular channel structure. The device is suitable for narrow rectangular channel structures with different sizes, and can be used for carrying out re-submerging experiments on experiment sections with single-plate double-channel, double-plate three-channel and more channels. The system pressure and the inlet flow in the submerging process can be kept stable, and it can be ensured that the supercooling degree of a working medium, the heating wall surface temperature and the initial liquid level are controllable.

The invention belongs to the technical field of integrated test of airplanes and engines, and discloses a flow measurement method for coupling test of an airframe air inlet duct fan. The flow measuring method for the engine body air inlet duct fan coupling test comprises the steps that the pressure value of a pressure measuring point is calculated through CFD; calculating slope screening pressure measuring points; carrying out an air inlet channel wind tunnel test; training a neural network; carrying out an engine body air inlet duct fan integrated wind tunnel test; calculating a pressure correction coefficient; calculating a predicted flow coefficient; and correcting the flow coefficient. According to the flow measurement method for the engine body air inlet duct fan coupling test, the flow coefficient-surface pressure distribution matching characteristic of an air inlet duct is obtained through a wind tunnel test, and then the flow coefficient is obtained through the matching characteristic and the engine body surface and air inlet duct inner surface pressure distribution in an engine body air inlet duct fan integrated model; the method can accurately predict the air inlet flow and has engineering practical value.

An embodiment of a manifold of a hydraulic fracturing system includes a flow cross junction including an inlet flow bore. In addition, the manifold includes a coupling adapter including an external shoulder and a connection device. The connection device is to connect to an output of a pump of the hydraulic fracturing system, and the coupling adapter is removably inserted within the inlet flow bore such that the connection device is positioned outside of the inlet flow bore. Further, the manifold includes a retainer ring connected to the flow cross junction and compressed against the external shoulder.

The invention discloses a surge valve control method and device, electronic equipment and a vehicle, relates to the field of engines, and aims to determine whether an engine is in a target working condition representing that a supercharger is liable to have a surge phenomenon or not. And on the basis of determining that the engine is in the target working condition, according to the intensity of the change of the operation state of the engine under the target working condition, when the engine is determined to be in a relatively strong transient working condition, whether a surge valve is opened or not is determined in time in combination with the opening degree of a throttle valve. And when it is determined that the surge valve is not opened, whether the surge valve is opened or not is further determined according to the air inlet flow of the engine and the opening degree of the throttle valve. Whether the surge valve is opened or not is judged according to the target working condition, the strong transient working condition and the surge flow of the engine in sequence, the multiple working conditions and operation conditions of the engine are synthesized, the opening condition of the surge valve is more accurately determined, the situation that the surge valve is opened abnormally can be effectively reduced, and therefore the situation that power of the engine is insufficient is effectively reduced.

Embodiments of a manifold of a hydraulic fracturing system include a junction having an inlet flow bore. The junction can include an integrated flow junction and valve check assembly having a body including a central portion and one or more side portions. The central portion can be positioned between a pair of manifold sections of the manifold and attached thereto. The one or more side portions extend radially from the central portion and include an inlet bore through which a pressurized fluid is received and supplied to the manifold. One or more check valves is positioned along the inlet bore so as to be integrated within the body of the junction.

The invention provides a centrifugal pump operation monitoring method and system, and the method comprises the following steps: collecting the operation parameters of a centrifugal pump in real time through a plurality of sensors, including inlet flow, inlet and outlet pressure and pressure difference, a main shaft vibration signal, a main shaft rotation speed, and the temperature of a pump body and a medium; denoising, abnormal value elimination and normalization preprocessing are carried out on the collected data; establishing a centrifugal pump spindle radial hydraulic exciting force model; calculating the alternating stress of the main shaft according to the hydraulic exciting force and predicting the fatigue life; and a fault early warning mechanism is designed based on the fatigue life prediction result, and real-time monitoring and fault early warning of the running state of the centrifugal pump are achieved. Through combination of data acquisition and processing, life prediction and a fault early warning mechanism, real-time monitoring of the running state of the centrifugal pump spindle and residual life prediction are achieved, and the running reliability and safety of equipment are improved.

An embodiment of a manifold of a hydraulic fracturing system includes a flow cross junction including an inlet flow bore. In addition, the manifold includes a coupling adapter including an external shoulder and a connection device. The connection device is to connect to an output of a pump of the hydraulic fracturing system, and the coupling adapter is removably inserted within the inlet flow bore such that the connection device is positioned outside of the inlet flow bore. Further, the manifold includes a retainer ring connected to the flow cross junction and compressed against the external shoulder.

The invention belongs to the technical field of aero-engines, and particularly relates to an aero-engine air inlet flow pipe calibration method, which comprises the following steps of: measuring internal flow field parameters in a standard flow measurement section through a plurality of sensors, and calculating theoretical air mass flow qm1TH of the standard flow measurement section; the actual air mass flow qm1ACT of the standard flow measuring section is measured through a negative pressure air suction type flow standard device; the outflow coefficient of the standard flow measurement section is calculated; connecting a calibrated engine air inlet flow pipe A2 to the front of the standard flow measuring section, and connecting the engine to the rear of the standard flow measuring section; calculating the actual air mass flow of the standard flow measurement section, and taking the actual air mass flow as the actual air mass flow qm4ACT of the calibrated engine air inlet flow pipe A2; and the outflow coefficient of the calibrated engine air inlet flow pipe A2 is calculated based on the theoretical air mass flow qm4TH and the actual air mass flow qm4ACT of the calibrated engine air inlet flow pipe A2.

The invention provides a modularized flow guide type multi-stage pump, and belongs to the technical field of water pumps. The modularized flow guide type multi-stage pump comprises a pump body assembly and a driving motor, the pump body assembly is formed by sequentially connecting a pump head pattern plate, a multi-stage pump shell, a multi-stage flow guide module set and a water retaining sealing cover, the pump head pattern plate is adjustably connected with a connecting end cover of the driving motor through a long screw rod, and the stage number of the pump can be adjusted by increasing or decreasing the number of the flow guide shells. Different lift requirements are met; the multi-stage flow guide module group is mainly composed of a water inlet flow guide shell, a transmission flow guide shell and a water outlet flow guide shell, a closed impeller is arranged in each flow guide shell to form an independent flow guide module, fluid is guided by spiral flow guide blades between the flow guide shells to orderly flow and smoothly transmit, and turbulent flow eddy current loss is reduced; and the water retaining sealing cover realizes double leakage prevention through a stepped sealing flange and mechanical sealing. The high-lift and high-flow pump has the advantages of being easy to disassemble, assemble and maintain, modularized and flexible to adjust, low in energy loss, high in lift, high in flow and high in sealing performance.

The invention provides a pressure control system of an MOCVD (Metal Organic Chemical Vapor Deposition) reaction cavity and MOCVD epitaxial equipment, and the system comprises a cavity in which a reaction cavity is defined; the exhaust pipeline is communicated with the reaction cavity; the first pressure gauge is fixed on the cavity body, and the first pressure gauge is used for detecting the gas pressure in the reaction cavity; the exhaust valve is configured to control the exhaust flow through the opening degree of the valve; the vacuum pump is used for extracting gas in the reaction cavity; the mass flow controller is configured to be capable of detecting and controlling the flow of gas flowing into the reaction cavity; and the controller is configured to control the valve opening degree of the exhaust valve and / or control the gas inlet flow of the mass flow controller according to the gas pressure detected by the first pressure meter. According to the pressure control system of the MOCVD reaction chamber, the first pressure meter, the exhaust valve and the mass flow controller are arranged on the chamber body, and the gas pressure can be adjusted in real time, so that the product quality can be effectively improved.

The invention provides a double-row low-temperature safety valve and relates to the technical field of safety valves, the double-row low-temperature safety valve comprises a main valve body, a valve cover and a pilot valve assembly, an inlet runner and an outlet runner are arranged in the main valve body, a guide sleeve is arranged in the main valve body, a first valve element is arranged in the guide sleeve in a sliding mode, and a valve seat is arranged in the main valve body; a first sealing piece is arranged at the lower end of the first valve element, a medium containing cavity is formed between the first valve element and the valve deck and located in the guide sleeve, the pilot valve assembly is communicated with the medium containing cavity and the inlet flow channel, and the first sealing piece and the valve seat can elastically deform. The medium containing cavity is filled with media to form pressure towards the valve seat on the first valve element, so that the first sealing piece extrudes the valve seat. According to the safety valve, the first valve element and the valve seat can both deform, the sealing performance of the valve seat and the first valve element under the low-temperature working condition is guaranteed, and the sealing performance between the first valve element and the guide sleeve is remarkably improved.

The ultra-high-temperature water-cooling switch valve comprises a valve body, a valve cover, a support, an actuator, a valve rod, a valve clack and a valve seat, an inlet flow channel, a middle cavity and an outlet flow channel which are sequentially communicated are formed in the valve body, a shaft hole is formed in the valve cover, and the valve rod penetrates through the shaft hole and extends into the middle cavity to be connected with the valve clack. The outer end of the valve rod is connected with the output end of the actuator, and the valve seat is installed between the outlet flow channel and the middle cavity and used for being in sealing fit with the valve clack when the valve is closed. An opening and closing piece cooling structure is arranged on the valve clack and the valve rod, a valve seat cooling structure is arranged on the valve seat, an inlet cooling structure is arranged in the inlet flow channel, a middle cavity cooling structure is arranged in the middle cavity, an outlet cooling structure is arranged in the outlet flow channel, and a valve deck cooling structure is arranged on the valve deck. Multiple cooling loops are adopted for cooling all parts of the valve, structural failures such as deformation caused by thermal barrier cold contraction under the alternating working condition are prevented, and normal operation of a valve pressure-bearing shell and a sealing element under the ultra-high-temperature working condition is guaranteed.

The invention relates to the field of valve control, in particular to a valve control method insensitive to temperature fluctuation, a controller and a vaporization device. The valve is arranged on a liquid inlet flow path of the vaporization part. The method comprises the steps that a current flow signal fed back by a flow sensor of the liquid inlet flow path is received; deriving the current flow signal, and gaining to obtain a current derivative compensation signal; pID control is carried out based on the flow set value and the flow measurement value corresponding to the current flow signal, and a current valve control basic signal is obtained; estimating a current temperature control disturbance signal caused by temperature fluctuation of the heating vaporization cavity based on the current flow signal and the valve control signal at the previous moment; and superposing the current valve control basic signal, the current derivative compensation signal and the current temperature control disturbance signal to obtain a current valve control signal. The multi-level control strategy combining PID control, derivative compensation and disturbance compensation is adopted to control the valve so as to cope with periodic disturbance of a heating system, and stability and control precision of liquid flow can be ensured.

A large fan blade type louver capable of eliminating transverse vortex at the end of a flow channel for ventilation regulation and control comprises a louver frame and a large fan blade set, and the louver frame is of a rectangular frame or a truss structure and used for installing and supporting the large fan blade set; the large fan blade group comprises 1-12 large fan blades which are vertically arranged and can eliminate transverse vortexes at the end part of the air inlet flow channel; the large fan blade comprises an end vortex eliminating sealing device, a fan blade body and a fan blade rotating shaft. The end vortex eliminating sealing device is installed at the end of the air inlet side of the fan blade and can also be installed at the end of the air outlet side of the fan blade. When the large fan blade set is fully opened, the end vortex eliminating sealing device can reduce transverse vortexes at the end of an air inlet flow channel between the end vortex eliminating sealing device and the adjacent large fan blade by optimizing the flow field at the end of the air inlet side of the fan blade, so that the additional air inlet resistance of the large fan blade is reduced, and the effective air inlet area is increased. The end vortex-eliminating sealing device is a vortex-eliminating sealing plate and can also be a vortex-eliminating sealing rectangular pipe, a vortex-eliminating sealing triangle or a vortex-eliminating sealing arc, and when the vortex-eliminating sealing device is arranged in the mode that the two sides of the vortex-eliminating sealing arc are arranged in an outwards-protruding arc mode, the vortex-eliminating sealing device can be combined with the fan blade to form an integrated large fan blade.

The air self-suction type resonance micro-nano bubble generating device comprises a pipeline body, a water inlet flow channel is formed in one end of the pipeline body, the end, provided with the water inlet flow channel, of the pipeline body communicates with an air inlet pipe, a speed adjusting motor is installed at the top of the pipeline body, and a rotating shaft is fixedly installed at the output end of the speed adjusting motor; a rotating impeller is fixedly mounted on the outer side of the rotating shaft; a cylinder body is fixedly mounted in the pipeline main body; the frequency and the amplitude are accurately regulated and controlled through the reciprocating motion of the first piston, so that the system achieves a mode of an efficient resonance state, micro-nano bubbles can be efficiently released, meanwhile, the equipment ingeniously adopts a self-suction air inlet mode, needed gas is automatically and continuously supplemented, and the energy consumption is reduced. According to the design, the defects of insufficient gas supplement, low efficiency and the like in a traditional micro-nano bubble generation mode are greatly overcome, the intake of gas is also remarkably improved, and sufficient raw materials are provided for generation of micro-nano bubbles.

The invention discloses a movable frame device for a high-power turboprop engine test bed and the engine test bed. The movable frame device comprises a movable frame framework, a front mounting seat and a counterweight system. The movable frame framework is arranged below the static frame device and used for being connected with the static frame device through a plurality of spring pieces arranged on the periphery of the movable frame framework, and then the rack system used for measuring the thrust of the turboprop engine is formed. The front mounting seat is used for being connected with an engine mounting rack for mounting a turboprop engine in a fast mounting manner so as to mount and support the turboprop engine to be measured. And the counterweight system is used for balancing the total weight of the turboprop engine and the engine mounting frame, so that the gravity center of the rack system is positioned in the center defined by the plurality of spring pieces. According to the movable frame device, the air inlet flow field of the propeller is not influenced by the size of the frame of the movable frame device, so that the engine performance is not influenced, the test result is high in accuracy, the test is safe and reliable, and the installation position of the propeller does not interfere with the structure of the movable frame device.

The invention discloses an improved valve body flow channel of a stop valve with a low lift loss coefficient xi and meeting ESG requirements. The valve body flow channel comprises a valve chamber, an annular groove, an inlet flow channel, a valve inlet, a valve seat, an outlet flow channel and a valve outlet. Wherein the center line of the inlet is provided with a bent arc smooth streamline, the angle of the rotating angle A is 2theta 1, and 2theta is larger than or equal to 55 degrees and smaller than or equal to 105 degrees; the bottom of the annular groove is provided with an inclined surface with an inclined angle beta; an outlet center line S2 of the outlet flow channel is a smooth streamline obliquely downwards, an inner outlet is formed in the inner diameter of the valve chamber, the angle of a corner E of an upper edge line S2a of the outlet flow channel is 2theta 21, 30 degrees < = 2theta 21 < = 90 degrees, a near end point E4 is communicated with the bottom of the inclined plane, and the height LH5 / d0 < = 0.4 of the near end point E4 is 0.4 < = LH5 / d0 < = 0.4; the jet flow S121 and the slow flow S122 can enter the outlet flow channel after passing through the diffusion C to form a rotation angle D, flow division is generated, and no flow interference is generated in the valve chamber and the inner outlet.

The invention provides a top structure of a high synchronous test number tester, which comprises a load plate, and two groups of socket assemblies are symmetrically arranged on the load plate. A plurality of signal connectors are arranged around each group of socket assemblies; the socket assembly comprises a plurality of chip sockets; a socket supporting plate, a rectifying plate and an airtight box are sequentially arranged below the load plate corresponding to the socket assembly from top to bottom; a through air inlet is formed in the bottom of the airtight box; air inlet flow channels are uniformly formed in the bottom surface in the airtight box and are communicated with the air inlet; a plurality of air uniformizing holes penetrate through the rectifying plate; the air uniformizing holes are formed above the air inlet flow channel and are communicated with the air inlet flow channel; a plurality of first vent holes are formed in the socket supporting plate in a penetrating manner, and the first vent holes are communicated with the space above the rectifying plate; a plurality of second vent holes are formed in the load plate in a penetrating mode, a third vent hole is formed in each chip socket of the socket assembly in a penetrating mode, and when the socket assembly is installed on the load plate, the second vent holes are communicated with the third vent holes in a one-to-one correspondence mode.

A combustor nozzle including nozzle modules, a combustor, and a gas turbine including the same are proposed. The nozzle module includes a fuel supply pipe having an internal fuel flow path, manifolds communicating with the fuel supply pipe and arranged in a row in a radial direction so that air inlet flow paths are respectively formed at positions therebetween, and fuel mixers disposed along a circumferential direction at the rear side of the manifold to receive the fuel from the manifold and inject the fuel, each of the plurality of fuel mixers including a mixer body having one end communicating with the manifold, wherein a tip is formed at the other end of the mixer body, a shroud disposed to surround an outer circumferential surface of the mixer body to guide an airflow, and at least one fuel port formed through the mixer body to inject fuel.

A method for controlling a flow regulating valve (6) of a filling machine (1), controlling the flow of pourable food product, envisages: receiving an inlet pressure measurement (PIN) from a pressure sensor (14); receiving an inlet flow measurement (FIN) from a flow meter (16); determining a control signal (Sc) for controlling an operating position of the flow regulating valve (6) by combined contributions (C1, C2) of a flow feedback control module (22), receiving at its input a flow set point (FSP) and the inlet flow measurement (FIN) and generating a first control contribution (C1) indicative of a difference between the inlet flow measurement and the flow set point; and a flow feed-forward control module (20), receiving at its input the inlet pressure measurement (PIN) and the flow set point (FSP) and generating a second control contribution (C2) as a function of the flow set point and inlet pressure measurement, using pre-stored fluid-dynamic maps, which may be a result of a characterization of the flow regulating valve in a test condition. The flow feed-forward control module uses the fluid dynamics maps in a dynamically adaptive manner, depending on different operating conditions of the filling machine and / or the related pourable food product, thereby adapting to the same different operating conditions and / or the pourable food product.

The invention belongs to the field of fluid machinery, and particularly discloses a centrifugal pump volute with a composite noise reduction structure. The centrifugal pump volute comprises a volute body with the base circle radius being R. A volute chamber is formed in the volute body, and a plurality of micro flow deflectors are distributed on the inner side of an inlet of the volute body in the circumferential direction; two sections of semicircular grooves are symmetrically formed in the upstream section of the volute inner wall baffle tongue front and back along the spiral line; two flow guide plates are arranged at a baffle tongue of the volute body, the flow guide plate close to one side of an inlet of the volute body is a front flow guide plate, and a plurality of flow guide holes are formed in the front flow guide plate; a plurality of cavities are uniformly arrayed on the wall surface of the baffle tongue of the volute body; and the bending directions of the micro flow deflectors and the flow deflectors are consistent with the water flowing direction. Inlet flow is optimized through the micro flow deflectors, vortex is restrained through the semicircular grooves, pressure pulsation is reduced through cooperation of the flow deflectors and the cavity structure, the hydraulic performance is kept while fluid noise is effectively reduced, and the comprehensive performance is obviously improved.

The invention relates to a bypass flow control method and device, a fuel cell air system and a vehicle, and relates to the technical field of batteries, and the method comprises the following steps: under the condition that an air compressor of the fuel cell air system is in a surge working condition, determining a bypass flow request value based on the surge control flow and in-pile flow of the air compressor; the surge control flow is the minimum flow threshold value of safe operation of the air compressor; determining an opening degree feed-forward value of a bypass valve of the fuel cell air system based on the bypass flow rate request value; and the opening degree of the bypass valve is controlled based on the opening degree feed-forward value so as to control the bypass flow of the fuel cell air system, and therefore the opening degree feed-forward value is used for predicting the opening degree needed by the bypass valve according to the bypass flow request value, and opening degree adjustment of the bypass valve can quickly respond to changes of the surge working condition of the air compressor. And the bypass flow can be quickly adjusted through the opening feedforward value, so that the air compressor can quickly recover stable operation.

The invention discloses a combustion chamber nonlinear stability prediction method based on multi-input thermo-acoustic disturbance modeling. The method is used for evaluating thermo-acoustic stability of combustion chambers of aero-engines, gas turbines and the like. According to the method, geometric, operation and analysis parameters are input, and cooling flow distribution is calculated; solving an effective equivalence ratio, a heat release rate and a temperature field, and calculating an acoustic modal frequency; constructing an equivalence ratio and inlet flow double-disturbance MISO transfer function, and generating an FTF curve; and judging oscillation through a limit cycle detection algorithm, calling a Tanh / PowerLaw model to calculate a saturated heat release rate, and finally visually outputting a result. Multi-factor coupling accurate modeling is achieved, intervention can be conducted in the initial stage of design, calculation only needs several minutes, the prediction precision and efficiency are improved, the research and development cost is reduced, and the safety of the combustion chamber is guaranteed.

The invention belongs to the technical field of fire fighting, and particularly relates to a groove connection type fire pump adapter which comprises a main body, a hand wheel, a valve rod and a valve plate are arranged on the main body, a supporting piece comprises a fixing block connected with the main body, and a supporting plate abutting against the valve plate is rotationally connected to the fixing block. The bottom of the fixing block is provided with an annular part for containing the supporting plate to rotate downwards, the rotating piece rotates to drive the pushing block at the bottom to rotate synchronously and be embedded into the first clamping groove, meanwhile, the arc face abuts against the arc face on the rack, and therefore the whole rack is pushed to move backwards, and the meshed driving wheel is driven to be transmitted to the transmission wheel. The transmission wheel rotates synchronously and drives the supporting plate to rotate downwards, so that the aperture of the supporting piece abutting against the valve plate is enlarged, water entering from the connector of the main body flows into the bottom pipeline of the main body more smoothly, and meanwhile, under the condition that the water flow is not changed, the connector of the bottom pipeline is enlarged, and water flow entering is not too rapid. Inlet flow speed is reduced, and water flow is more stable.

The invention discloses a gas purification real-time monitoring method, system and device and a medium, and belongs to the technical field of gas purification. The method comprises the following steps: a data acquisition stage: acquiring inlet gas flow and outlet component data; in the adsorbent state monitoring stage, the adsorbent state is monitored in real time through the monitoring point position in the adsorption barrel; in the adsorption capacity calculation stage, the residual adsorption capacity is predicted through an impurity penetration curve model on the basis of inlet flow and outlet component data, and bidirectional verification and correction are carried out on the residual adsorption capacity and an internal monitoring state; in the regeneration time prediction stage, the optimal regeneration time is dynamically predicted according to discharged gas component analysis and residual adsorption capacity; in the real-time regulation and control stage, parameters of the purifier and the regenerative heater are adjusted in real time according to the prediction result. Accurate evaluation of the state of the adsorption cylinder and intelligent optimization of the regeneration process are achieved, the utilization rate of the adsorption cylinder is remarkably increased, and the total energy consumption of regeneration is reduced.

The invention discloses digital intelligence powder type distribution-free variable viscosity fracturing fluid skid-mounted equipment and a control method thereof, and belongs to the technical field of oil and gas field development. The equipment comprises a stirring mechanism, a feeding mechanism, a water feeding mechanism and a discharging mechanism which are centrally controlled through a control box. The feeding mechanism adopts a first screw conveyor to convey solid materials to the stirring tank body; the water supply mechanism supplies water to the tank through a water supply pump and a water outlet pipe with an electromagnetic valve, and the water quantity is monitored by a water inlet flow sensor; the discharging mechanism outputs the mixed liquid through a discharging pump, and the viscosity of the fracturing fluid is detected in real time through a viscosity sensor. The control box is connected with all the sensors and execution components, and automatic adjustment and closed-loop control of the material proportion are achieved by collecting flow and viscosity data. According to the invention, accurate and automatic preparation of the fracturing fluid is realized, the problems of inaccurate traditional manual proportioning and poor stability are effectively solved, and the fluid preparation quality and the operation efficiency are remarkably improved.

An embodiment of a manifold of a hydraulic fracturing system includes a flow cross junction including an inlet flow bore. In addition, the manifold includes a coupling adapter including an external shoulder and a connection device. The connection device is to connect to an output of a pump of the hydraulic fracturing system, and the coupling adapter is removably inserted within the inlet flow bore such that the connection device is positioned outside of the inlet flow bore. Further, the manifold includes a retainer ring connected to the flow cross junction and compressed against the external shoulder.

The cooling runner system comprises a water inlet, a water inlet runner, a water uniformizing device, a water outlet runner and a water outlet, the water inlet runner penetrates through a rotating shaft and is located on the axis of the rotating shaft, the water inlet is formed in the side edge, close to the lower portion, of the water inlet runner, and the output end of the water inlet is connected with the input end of the water inlet runner; a water uniformizing device is arranged in the crucible body, the top of the water inlet flow channel penetrates through the center of the bottom of the crucible body and the water uniformizing device to reach the upper portion of the water uniformizing device, the water uniformizing device comprises a water uniformizing disc and guide pieces, the upper side surface and the lower side surface of the water uniformizing disc are each provided with a plurality of guide pieces diverging towards the periphery, and the guide pieces on each side are arranged in the circumferential direction of the circle center of the water uniformizing disc. The water outlet runner is arranged on the outer ring of the water inlet runner, so that the inner wall of the water outlet runner and the outer wall of the water inlet runner form a water flow passageway for water outlet, the input end of the water flow passageway is connected with the output end of the water uniformizing device, and the output end of the water flow passageway is connected with the water outlet.