1027 results about "Injection pump" patented technology

The invention relates to an attitude and orbit control engine high-altitude environment simulation ignition test system and a verification method, in particular to a high-altitude simulation test bed active injection verification system and a verification method, and solves the technical problems of high cost, high risk and low verification data validity during verification of a high-altitude simulation test bed in the prior art. The active injection verification system for the high-altitude simulation test bench comprises a vacuum chamber, a diffuser, a water spray cooler, a first corrugated pipe, a first gas collection chamber, a second corrugated pipe, n groups of coolers, a third corrugated pipe, a second gas collection chamber, a steam-jet pump, a pipeline and a data acquisition module, according to the verification method of the active ejection verification system of the high-altitude simulation test stand, ejection capacity verification is carried out in two stages, and the verification effectiveness is greatly improved on the premise that the verification cost is greatly reduced.

The invention discloses a blowout preventer remote automatic grease injection system based on PID control and a control method, and relates to the technical field of grease injection, and the control method comprises the following steps: an initialization stage: automatically matching the specification of a choke tube according to the diameter of a cable, and preheating sealing grease to a set temperature; in the dynamic control stage, wellhead pressure and grease injection pressure are monitored in real time, pressure errors are calculated, the flow of a grease injection pump is adjusted according to a PID algorithm, and when the cable lowering speed suddenly changes, pressure fluctuation is inhibited in advance through a differential link; and according to the safety redundancy mechanism, when the main PID controller fails, the standby PID controller is automatically switched, and emergency locking is triggered when the wellhead pressure exceeds the limit. The flow of a grease injection pump is adjusted in real time through an incremental PID algorithm and a self-adaptive adjustment method, the grease injection amount is accurately controlled, pressure fluctuation is reduced, sudden change of the cable lowering speed is predicted through a differential link, the response precision is improved, stable operation of the system is ensured through a redundant controller and an emergency locking function, PID output is corrected through a dynamic temperature-viscosity model, and the reliability of the system is improved. The system service life is prolonged.

The invention relates to a steam-jet pump system and a control method thereof, in particular to a variable-stage steam-jet pump system and a control method thereof, and solves the technical problems that an existing steam-jet pump system is difficult to realize switching of different working conditions and energy consumption is difficult to reduce. The variable-stage steam jet pump system comprises a gas collecting chamber and a gas jet pump unit connected with the gas collecting chamber, and the gas jet pump unit comprises a vacuum suction pipeline, a first-stage vacuum jet pump, a first-stage condenser, a second-stage vacuum jet pump, a second-stage condenser and a third-stage vacuum jet pump which are sequentially connected with the gas collecting chamber in the gas flow direction. The system further comprises a three-stage variable pump, a four-stage vacuum jet pump, a steam conveying unit and a cooling water conveying unit. The water supply reliability is greatly improved, and the long-time operation stability of the steam-jet pump system is guaranteed. According to the control method, ignition tests of engines with multiple thrust magnitudes and multiple working heights can be completed.

The invention relates to a microcosmic visualization underground reservoir two-phase flow displacement experiment system and method, and the system comprises a microcosmic seepage chip, and an injection module, a microcosmic holder, a pressure and temperature acquisition control module, a gas metering module and a data and image acquisition module which are connected in sequence; a microscopic seepage chip is clamped in the microscopic clamping device; the injection module comprises an N2 gas cylinder, a hydrogen generator, a piston container, an injection pump and a pressure regulating valve; the pressure and temperature acquisition control module comprises an annular pressure tracking pump, a pressure return unit, a temperature sensor and a heating unit. The pressure return unit comprises a pressure return valve, a pressure return container and a pressure return pump. Compared with the prior art, the seepage condition of the two-phase flow in the model and the residual gas phase distribution condition after the two-phase flow passes through gas drive water, water drive gas, polymer drive and other chemical drive can be visually observed, and the accuracy of experimental data is ensured.

The present application relates to a method and system for filling water in a primary loop after overhaul charging of a nuclear power unit, comprising: performing preparation work before filling water; after the preparation work is completed, performing switch operation test of a to-be-tested actuator and water filling and exhaust work of a flowmeter; after the switch operation test of the to-be-tested actuator is completed, performing performance test of a high-pressure safety injection pump; after the performance test of the high-pressure safety injection pump is completed, performing performance test of a low-pressure safety injection pump; after the performance test of the low-pressure safety injection pump is completed, filling water in the primary loop according to a preset water filling mode; judging whether a real-time water level of a reactor pool reaches a full water level; if yes, performing alarm action test. The present application can solve the problem of long time consumption, reduce workload, significantly improve work efficiency, reduce work risk and effectively save production cost by completing the preparation work in advance and arranging the alarm action test at the end.

A bleed system including a jet pump system configured to provide a supply gas comprising at least one of a higher pressure gas, a lower pressure gas, or a mixture of the higher pressure gas and the lower pressure gas. A needle body defines a throat region between a nozzle wall and the needle body. The needle body is configured to cause a gap between a rear needle surface of the needle body and the nozzle wall to decrease as the rear needle surface extends toward the throat region. The jet pump system is configured to discharge the higher pressure gas through the throat region and mix the higher pressure gas and the lower pressure gas in a mixing portion of an exhaust portion.

The invention relates to the technical field of injection pump calibration, in particular to an injection pump automatic calibration method and system based on flow velocity stability, and the method comprises the following steps: S1, collecting flow velocity data in the operation process of an injection pump, and recognizing a boundary section of stable-to-unstable conversion based on a dynamic window; constructing a boundary drift indication map reflecting response delay, amplitude fluctuation and a rate inflection point; s2, identifying a consistency offset error mode from the atlas in combination with a multi-cycle drift behavior, marking a start window, a transfer window and a peak window, and generating a historical drift memory sequence; and S3, constructing a cross-cycle inheritance type calibration parameter template based on the memory sequence, and adaptively adjusting key parameters in input control logic to realize pre-calibration response before the injection pump is unstable. According to the method, by constructing the boundary drift map, the inheritance type calibration template and the dynamic parameter fusion mechanism, accurate pre-adjustment calibration and self-adaptive compensation optimization of the injection pump before the injection pump is in the unstable state are achieved.

The invention relates to the technical field of part stamping dies, in particular to an automobile part machining stamping forming die which comprises a mounting plate, a fixed supporting structure is arranged below the mounting plate, a first mounting block is fixedly mounted on the upper side of the mounting plate, and a detachable lower die base is arranged on the upper side of the first mounting block. In the process that a sliding block moves downwards along with a movable adaptive block, the top face of the sliding block retracts into a first sliding cavity, space is reserved for stamping, when stamping is completed and an upper die block ascends, a second spring pushes the movable adaptive block to move upwards, the top of the sliding block protrudes out of the surface of a lower die base to eject a workpiece, and the top of the sliding block makes contact with an extrusion sensor to trigger an automatic oil injection pump; lubricating oil is injected into the oil injection hole through the guide pipe and sprayed to the surface of the lower die base through the oil injection groove to complete lubrication of the lower surface, the bidirectional lubrication mechanism ensures that the metal sheet is comprehensively lubricated in the stamping process, friction loss is remarkably reduced, and the product surface quality is improved.

The invention discloses a device and method for measuring the mechanical property of a thick oil-water interface by simulating oil reservoir conditions, and relates to the technical field of chemical cold production of thick oil, and the device comprises a thick oil injection module, a water injection module, a high-temperature and high-pressure bin module and a data acquisition and calculation and injection pump control module; the thick oil injection module is connected with the high-temperature and high-pressure bin module, and the thick oil injection module is configured to inject thick oil into the high-temperature and high-pressure bin module; the water injection module is connected with the high-temperature and high-pressure bin module and is configured to inject water into the high-temperature and high-pressure bin module; and the data acquisition calculation and injection pump control module is connected with the high-temperature and high-pressure bin module and the thick oil injection module, and is configured to acquire parameters such as temperature and pressure in a high-temperature and high-pressure cavity, obtain a hanging drop outline image in the high-temperature and high-pressure bin module and control the thick oil injection process in the thick oil injection module. The device solves the problem that most devices at present cannot measure the mechanical properties of the heavy oil-water interface under the real oil reservoir condition.

The invention discloses a high / ultra-high performance concrete full-automatic injection pump truck and a construction method, the high / ultra-high performance concrete full-automatic injection pump truck comprises a walking system, an efficient pumping and precise injection system, a hydraulic and intelligent central control system, a pre-injection pre-scanning system, a spraying-while-detecting system and a post-injection quality evaluation system, and the walking system is used for achieving movement and in-place of a pump truck; the efficient pumping and accurate spraying system is used for conveying and spraying concrete; the hydraulic and intelligent central control system is used for controlling the operation of the whole pump truck; the pre-spraying pre-scanning system is used for acquiring the three-dimensional form and defect information of a construction surface before construction; the spraying-while-detecting system is used for monitoring the concrete flow state and construction parameters in the spraying process in real time; the post-spraying quality evaluation system is used for carrying out nondestructive testing on the quality of a spraying layer after construction; according to the invention, full-process intelligent closed-loop control from construction surface scanning, path planning, real-time spraying adjustment to final quality evaluation is realized, and high quality, high efficiency and intelligence of concrete spraying construction are realized.

The invention relates to a walking and lifting integrated electric driving system which comprises a cooling liquid circulation assembly, a cooling assembly and two sets of bottom blocking boxes, the tops of the two sets of bottom blocking boxes are connected with a top blocking box, motors are installed in the bottom blocking boxes, and a motor driving control system is installed in the top blocking box. A motor driving control system used for controlling the motor is installed in the top blocking box, a first heat conduction part is connected to the outer side of the motor in a surrounding mode, a second heat conduction part is connected to the outer side of the top blocking box in a surrounding mode, and the cooling liquid circulation assembly comprises an injection pump body, a liquid storage box filled with cooling liquid and a pipeline part. The cooling assembly comprises a fan arranged on the outer side of the bottom blocking box and a cooling pipeline piece, and the pump body is used for driving cooling liquid to circularly flow among the liquid storage box, the first heat conduction part, the second heat conduction part and the cooling pipeline piece. According to the invention, multiple integrated heat dissipation can be carried out on the motor and the motor driving control system during operation, and the heat dissipation effect is good.

The invention discloses an energy-saving double-jet-pump steam stripping system which comprises a device body, an annular rotating seat is arranged at the top of the device body, a plurality of vertical rods are connected to the bottom of the annular rotating seat, a plurality of first flow guide discs are fixedly connected among the vertical rods, annular material accumulation discs are arranged at the bottoms of the first flow guide discs, and a plugging disc is arranged in the annular rotating seat. A guide air pipe is fixedly arranged above the plugging disc, an air supply pipe is movably arranged on the plugging disc in a penetrating mode, the top of the air supply pipe is movably arranged in the guide air pipe in a penetrating mode, a lifting device is arranged on the plugging disc, a plurality of second flow guide discs are fixedly connected to the air supply pipe, and every two first flow guide discs and every two second flow guide discs form a group; the upper openings of the second flow guide discs in the same group are located above the lower openings of the first flow guide discs, and the second flow guide discs are provided with material splashing blocks extending into the annular material accumulation discs. The steam stripping system can fully improve the steam stripping efficiency on the premise of avoiding flooding.

The invention relates to an anti-explosion electric injection pump, and belongs to the technical field of electric injection pumps, the anti-explosion electric injection pump comprises a movable base, an anti-explosion electric control box is arranged on the outer wall of the movable base, a hydraulic pump is arranged on one side of the anti-explosion electric control box, an anti-explosion motor is arranged on one side of the hydraulic pump, and an oil tank body is arranged on one side of the anti-explosion motor; a grease injection gun body connected with the hydraulic pump through a gas conveying pipe is arranged on one side of the oil tank body, an end cover tightening detection rod is arranged on the outer wall of the grease injection gun body, an oil outlet pipe is arranged at the top of the grease injection gun body, and a pressure gauge is arranged on the outer wall of the oil outlet pipe. A double-piston pressurization structure in the grease injection gun body is arranged, a piston assembly in the grease injection gun body is improved, the double-piston series connection design is adopted, high-pressure oil output by the hydraulic pump firstly pushes the first piston, then a linkage structure drives the second piston to conduct secondary pressurization, the grease injection pressure is remarkably improved, and the high-pressure grease injection working condition requirement is met; and the double pistons work cooperatively, so that the grease injection flow is more stable.

The medical electric control piston type medicine injection pump comprises a fixed box and an adjusting box, the adjusting box is installed on one side of the fixed box, a moving groove is formed in the top face of the adjusting box, a connecting rod is slidably connected to the interior of the moving groove, and the upper end of the connecting rod extends to the position above the moving groove and is connected with a clamping and pushing mechanism. When the device is used, a needle cylinder is flatly placed in the mounting groove, cylinder wings of the needle cylinder are embedded into the fixing groove, a push plate of an injector is clamped through the two clamping plates, during clamping, the clamping plates are opened towards the two sides and are loosened after being placed on the two sides of the push plate, and fixing can be completed, and operation is easy; a shading plate is contained in the fixing box, the shading plate can be driven by a motor to be unfolded, the unfolded shading plate covers the outer side of a needle cylinder, a good shading effect is achieved on liquid medicine needing to be shaded, meanwhile, a certain heating effect can be achieved on an injector through an electric heating wire installed on the inner wall of the shading plate, discomfort caused by use in winter is reduced, and the safety of a patient is improved. And the functionality of the whole injection pump is improved.

The invention relates to a jet pump (2) for supplying hydrogen in a fuel cell system, comprising a nozzle device (10) and a needle (30) adjustably guided in a bearing bore (13) of the nozzle device (10) for changing an outlet cross-section relative to the nozzle device (10). To ensure long-term, reliable operation of the jet pump (2), the nozzle device (10) has a recess (24) extending along the needle (30) on the bearing bore (13) and / or a recess (25) extending along the needle (30) next to the bearing bore (13). The invention further relates to a bearing for the needle (11) for a jet pump (2).

The utility model belongs to the technical field of dosing devices, and particularly discloses a grating type high-precision injection pump which comprises a base plate, an injector fixing piece connected to the base plate, an injector installed on the injector fixing piece, a connecting piece, a controller, a grating ruler and an installation table connected to the base plate in parallel, a sliding plate is horizontally and slidably connected to the grating ruler, a sliding table is horizontally and slidably connected to the mounting table, the connecting piece is connected with the sliding plate and the sliding table, and a driving piece for driving the sliding table to slide is arranged on the mounting table; the tail end of a push rod of the injector is fixed on the connecting piece; a photoelectric sensing switch is connected to the base plate, a sensing piece is connected to one side of the connecting piece, the controller is electrically connected with the driving piece and the photoelectric sensing switch, and when the sensing piece moves to the photoelectric sensing switch and triggers the photoelectric sensing switch, the controller controls the sliding table to stop sliding, and at the moment, a push rod of the injector is pushed to the bottom of a needle cylinder of the injector. The sampling accuracy of the injection pump can be improved.

The utility model relates to torsion testing equipment of a matching device of a liquid injection pump for a microfluidic system, which comprises a machine table, a torsion testing machine is arranged on the table top of the machine table, the torsion testing machine comprises an output end used for being connected with a screw rod of the matching device in a matched mode, and the axial direction of the output end is in a first direction X; the jig comprises a base and a sliding seat, the base is fixed to the table top, the sliding seat can be assembled on the base in a sliding mode in the second direction Y, the sliding seat is used for containing a matched device, and the second direction Y is perpendicular to the first direction X; an output part of the driving mechanism is connected with the sliding seat, and the driving mechanism is used for driving the sliding seat to slide relative to the base in the second direction Y; the propelling mechanism is connected with the torsion testing machine and is used for driving the torsion testing machine to move along the first direction X; the torsion testing equipment further comprises a control system used for controlling the torsion testing machine, the driving mechanism and the propelling mechanism to work, the testing efficiency can be improved, and the accuracy of the final position of the piston rod can be guaranteed.

A fuel-fired burner includes a combustion air inlet for receiving combustion air coupled to a combustion air nozzle at an input to a second chamber within a burner housing spaced apart from a third chamber within the second chamber. The combustion air nozzle directs the combustion air into the third chamber. A fuel inlet coupled to a burner nozzle secured to a burner mounting plate has a recycle port for receiving hot exhaust gas provided to an exhaust gas path. A jet pump located entirely inside the burner housing is configured to receive the hot exhaust gas from the exhaust gas path. The jet pump operates by flowing the combustion air through the combustion air nozzle which suctions in the hot exhaust gas through the recycle port into the exhaust gas path then into a gas mixing zone for mixing the hot exhaust gas and the combustion air.

The invention provides a vacuum aluminum suction transfer system for positioning and sealing a molten aluminum ladle, which belongs to the field of molten aluminum transfer equipment and is characterized in that the molten aluminum ladle is placed on a base, a fixed base is matched with a movable base to position the molten aluminum ladle, and a guide lifting frame slides along a guide rail on the outer side of a vertical column on the fixed base; the supporting frame and the sealing cover are driven to ascend and descend, the sealing cover and the molten aluminum ladle are in flexible butt joint through compression of the spring rod to form a sealed environment, compressed air in the air storage tank drives the injection pump to vacuumize the molten aluminum ladle to generate negative pressure, and molten aluminum in a side well of the heat preservation furnace penetrates through the sealing cover through the inclined aluminum suction pipe to enter the molten aluminum ladle. The transferring problem of molten aluminum in the heat preservation furnace is solved, the influence of positioning errors of the molten aluminum ladle is reduced, the sealing efficiency of the sealing cover and the molten aluminum ladle is improved, aluminum slag in the aluminum suction pipe is reduced, and the purity of the molten aluminum during transferring is improved.

The utility model discloses a device for removing burrs on the inner wall of an injection pump, which belongs to the field of injection pump processing and comprises a working table, a lifting component is arranged at the top of the working table and comprises a cross beam, a burr removing mechanism is arranged on the cross beam and comprises a turntable, and a groove is formed in the bottom of the turntable. The groove is internally and fixedly connected with an electric push rod, the other end of the electric push rod is fixedly connected with a moving block, the moving block is slidably connected into the groove, the moving block is internally and rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a grinding roller, the burr removing mechanism further comprises a power assembly, and a driving mechanism is arranged above the rotating disc. The device has the beneficial effects that the positions of a moving block and a grinding roller are adjusted through an electric push rod, and the device is suitable for injection pumps of different sizes; rotation of the rotating shaft serves as a power source to drive the grinding roller to rotate, one machine has multiple purposes, and the resource utilization rate is increased. And the autorotation direction of the polishing roller is opposite to the revolution direction, so that the polishing efficiency is improved.

The invention relates to the field of refrigeration, in particular to a pump-driven two-phase flow refrigeration system, a regulation and control method, electronic equipment and a readable storage medium, the pump-driven two-phase flow refrigeration system comprises an evaporator serving as a user unit, after a gas-liquid mixed refrigerant discharged by the evaporator is separated by a gas-liquid separator, a gaseous refrigerant is condensed by a condenser and then conveyed to the evaporator through an injection pump, and the evaporator is connected with the pump-driven two-phase flow refrigeration system. A liquid refrigerant sequentially passes through the liquid storage tank, the main pump and the injection pump and then is conveyed to the evaporator to form refrigerant circulation; a three-way regulating valve is arranged at an outlet of the condenser, and after refrigerant condensed by the condenser is shunted by the three-way regulating valve, one part of the refrigerant is conveyed to the injection pump, and the other part of the refrigerant is conveyed into the liquid storage tank. The cavitation phenomenon of the pump body in the refrigerating system is avoided, and the safety and reliability of the refrigerating system are improved.

The invention discloses an integrated on-site synchronous grouting device and method for a shield tunneling machine. The integrated on-site synchronous grouting device for the shield tunneling machine comprises material storage equipment, pulping equipment, injection equipment, grouting equipment and a grouting monitoring-feedback-decision system. The material storage equipment comprises a horizontal tank type stock bin and a sealed tank; the injection equipment comprises an injection pump, a pressure feed pipe and a compressor, and is powered by the compressor; the pulping equipment comprises a liquid A mixer and a liquid A stirrer; the grouting equipment comprises a propelling valve, a cleaning pipeline, a material mixing device, a grouting pipeline and grouting control equipment. The monitoring-feedback-decision-making system comprises a monitoring system, a feedback system and a decision-making system and is connected with a grouting process line. The integrated field synchronous grouting equipment integrating slurry preparation, slurry storage and grouting is formed in the shield tunneling machine, the problems that a traditional ground stirring station is unstable in long-distance slurry pumping, high in cost and the like are solved, the slurry quality can be guaranteed, and the grouting effect can be improved.

According to the outer circulation type speed reducer lubricating system, a speed reducer comprises a protection box and a speed reducer on the upper side in the protection box, an oil inlet and a first oil outlet are formed in the speed reducer, an oil storage cavity is formed in the position, located below the speed reducer, in the protection box, and a second oil outlet is formed in the lower side of the oil storage cavity; one side of the oil filling pump is communicated with the oil tank, the oil filling pump is communicated with the oil inlet through an oil inlet pipe, the second oil outlet is communicated with the oil tank through an oil outlet pipe, and lubricating oil outer circulation operation of the oil filling pump, the oil inlet pipe, the oil inlet, the first oil outlet, the oil storage cavity, the second oil outlet, the oil outlet pipe and the oil tank is completed. Lubricating oil can be fully cooled in the oil storage cavity, the oil tank ensures that only part of the lubricating oil always participates in circulating work, it is further ensured that the lubricating oil can well complete heat dissipation, finally, the lubricating oil input into the speed reducer has the low temperature, the service life of the speed reducer is ensured, and the service life of the speed reducer is prolonged. And long-time operation can be realized.

The utility model discloses a shock absorber magnetorheological fluid high pressure variable pressure and flow injection mechanism which comprises a mechanism body, a buffer cylinder and a quantitative cylinder are installed on the side of the upper end of the mechanism body, a servo motor is installed in the middle of the upper end of the mechanism body in a positioning mode, and a sliding rail is installed at the front end of the lower portion of the mechanism body. According to the magnetorheological fluid high-pressure variable pressure and flow injection mechanism of the shock absorber, after the liquid injection pump set supplies liquid into the buffer cylinder, a pipeline is sealed through the one-way valve to prevent the liquid from flowing back until the buffer cylinder is full, and the two-way pneumatic control ball valve on the top of the buffer cylinder is opened; the servo mechanism pulls a piston rod in the liquid injection quantitative cylinder to fully travel to synchronously fully fill a cavity in the quantitative cylinder, excess air is exhausted through an exhaust valve at an oil inlet and an oil outlet of the quantitative cylinder, and the pressure required for liquid injection in a pipeline is finely adjusted and kept through a servo motor; and then the servo motor drives the quantitative cylinder to inject the magnetorheological fluid with the required volume into the product according to the set oil injection amount.

The utility model provides a novel injection pump and belongs to the technical field of water pumps. The problems that an existing injection pump lacks a filtering structure, and use is affected are solved. The novel injection pump comprises a valve body with an air inlet and a steam inlet, a filter device is arranged at the air inlet, and the filter device is composed of a built-in mounting sleeve, a filter framework positioned at the top of the built-in mounting sleeve and a filter screen fixed in the filter framework. A plurality of groups of magnetic filtering assemblies consisting of a plurality of magnetic rings are arranged in the filtering device, a connecting hole is formed in each magnetic ring, a supporting sleeve is arranged in each connecting hole, the end part of each supporting sleeve extends outwards to form a positioning ring, and a threaded sleeve for limiting the positioning ring is in threaded connection with the interior of the air inlet. The filter has the advantages of being good in filtering effect and improving the using effect.

The invention discloses equipment for preparing three-dimensional fiber aerogel through airflow turbulence assisted centrifugal spinning, and belongs to the technical field of centrifugal spinning.The equipment comprises a cross beam support, a high-speed centrifugal module, an airflow assisting module, a liquid supply module and a continuous collection module, and the high-speed centrifugal module comprises a high-speed motor, a ceramic bearing and a needleless spinning cup; the high-speed motor provides centrifugal force needed by spinning, spinning holes are formed in the cup wall of the needleless spinning cup, the continuous collecting module is located below the needleless spinning cup, the air compressor is communicated with the air path outlet rotating rod through the air path channel, and during centrifugal spinning, the intelligent injection pump pumps spinning liquid in the injector into the needleless spinning cup through the liquid conveying pipe; the air path outlet rotating rod ejects stable air flow to form turbulent flow, the fibers thrown out through the spinning holes are further stretched and wound under the turbulent flow effect, and finally the fibers are deposited in a three-dimensional structure and fall onto the continuous collecting module to be continuously collected. A high-voltage electric field and high temperature do not need to be applied, and the production efficiency is improved.

The invention relates to a jet pump (100) for conveying a suction fluid (242) in a refrigerant circuit (200) of a temperature control system using a propellant fluid (231) and utilizing the Bernoulli effect, wherein the jet pump (100) has a primary nozzle (103) for accelerating the propellant fluid, a secondary connection interface (102) for supplying the suction fluid, a mixing tube (104) downstream of the primary nozzle (103) and downstream of the secondary connection interface (102), and a diffuser (105) downstream of the mixing tube (104), wherein in an end section (140) of the mixing tube (104), which is located at an end of the mixing tube (104) furthest from the primary nozzle (103) and closer to the diffuser (105), a thrust edge (130) is provided which is configured to act in a supersonic The flow in the mixing tube (104) is intended to trigger a compression pulse in the final section (140). Furthermore, a refrigerant circuit (200) with such a jet pump (100) is proposed.

The invention relates to an underground oil-water separation multi-layer injection-production process pipe column with step-by-step setting and seal examining functions. The problems that an existing injection-production pipe column in the same well cannot be subjected to seal examination after setting, and effective setting cannot be achieved when the number of separation layers is large are mainly solved. The device is characterized in that the lower end of the extraction pump (12) is connected with a pipe column, the pipe column is connected with a plurality of delayed setting packers, the number of the delayed setting packers is the same as that of injection layers, the lower end of the pipe column is connected with an anchoring packer (6), and the water injection layer and the extraction layer are separated by the delayed setting packers and the anchoring packer (6); the injection pump (4) is located below the anchoring packer (6), and the oil-water separator (2) is arranged on the lower portion of the injection pump (4). In the construction process of the underground oil-water separation multi-layer injection-production process pipe column with the step-by-step setting and seal examining functions, step-by-step setting and seal examining can be achieved on the packing pipe column according to process requirements, and it is guaranteed that the injection-production process of the same well is reliably achieved.

The invention relates to a device and a method for forming hydrates by throwing and coating a water film on a flywheel, and relates to the technical field of carbon capture. The device comprises a reactor, a motor, a linkage shaft, a flywheel disc, an injection pump and a water collecting tank, the reactor is in a funnel shape, the tip end of the reactor faces downwards, the motor is arranged outside the reactor, and a gas conveying connector is arranged on the reactor and used for introducing flue waste gas into the reactor; the motor, the linkage shaft and the flywheel disc are sequentially connected from top to bottom, the flywheel disc is horizontally arranged in the reactor, the linkage shaft is sleeved with the water collecting tank, the injection pump is communicated to the water collecting tank through a pipeline and used for injecting liquid water into the water collecting tank, and the liquid water flows to the flywheel disc along the linkage shaft. Liquid water is thrown and coated on the inner wall of the reactor by the flywheel disc, and is subjected to hydration reaction with carbon dioxide in the flue waste gas to generate solid hydrate. According to the device and the method, the carbon dioxide in the flue gas can be efficiently captured by utilizing a hydrate method.

The invention relates to the technical field of ferrous metallurgy casting, in particular to a drainage sand removing and recycling method and device. Comprising a mechanical arm, a lifting rotation controller, a controller arm, a sand suction cylinder, a sand conveying pipeline, a sand collecting tank and an injection pump. The lifting and rotating controller is fixedly mounted on the mechanical arm; the controller arm is connected with the lifting and rotating controller, and the lifting and rotating of the controller arm are controlled by the lifting and rotating controller; the sand suction cylinder is connected with the controller arm, the sand suction cylinder is of a U-shaped structure, and one end of the sand suction cylinder is a horn mouth used for sucking drainage sand; one end of the sand conveying pipeline is positioned above the tundish cover sprue gate, and the end part of the sand conveying pipeline is bent downwards to be connected with the other end of the sand suction cylinder; the other end of the sand conveying pipeline is connected with the sand collecting tank; the sand collecting tank is connected with an injection pump pipeline, and the injection pump provides suction power. The ladle filler sand, harmful gas in gaps of the ladle filler sand and a long nozzle and a small part of molten steel in contact with the ladle filler sand in a steel ladle can be discharged out of tundish molten steel and recycled.