97results about "Jet pumps" patented technology

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 application discloses a kind of spray pump structures with multi-hole parallel nozzle, including connecting pipe flange, shell, nozzle, flow guide cylinder, ejector, flow guide cylinder is fixedly connected outside nozzle, nozzle and flow guide cylinder have annular area between;Nozzle rear end is fixedly connected in the bottom of connecting pipe flange, nozzle is multi-hole parallel nozzle, with one working steam inlet and four working steam outlets;Flow guide cylinder is a hollow cylinder structure, and a circle of through-flow holes are arranged outside it.The spray pump structure of the application is improved on the technology of existing tapered nozzle, and adopts the design structure of multi-hole parallel nozzle.Under the condition that the outlet throat area is unchanged, the mixing of nozzle outlet jet and the sucked gas is enhanced, and the pumping capacity of the tapered nozzle ejector is improved.

The present disclosure addresses the problem of providing a ventilation system in which the ventilation direction can be changed while the structure of a nozzle is simplified. In the ventilation system (VS1), a nozzle unit (1) has at least two nozzles (10). The at least two nozzles (10) each have a hollow elongated housing (10a) extending along a first direction, and the nozzles are lined up along a second direction that intersects the first direction. A ventilation device (3) is placed above the nozzle unit (1), and the ventilation device blows air from a first end (1a) toward a second end (1b) in the first direction of the nozzle unit (1). A control device (4) controls the ventilation device (3). Ventilation ports (10b) extending along the first direction are formed in the lower surfaces of the housings (10a) of the at least two nozzles (10). Air that has been sent into the housings (10a) is blown by the ventilation ports (10b) out of the housings (10a).

The utility model discloses a kind of steam ejector and circulating heating system for starch liquefaction, including shell, the top of the shell is provided with steam inlet pipe and the feed pipe located in the side of shell, which are communicated with steam injection pipe, the inside of the steam inlet pipe is provided with filter screen one and filter screen two for impurity removal. Prevent the impurities contained in steam from entering the inside of steam injection pipe, prevent starch particles from settling, reduce the waste of steam, realize circulating heating.

The invention relates to a jet pump unit (300) with at least two jet pumps (100) connected in parallel for pumping 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 each of the at least two jet pumps 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 the jet pump unit has a common pressure line (310) for supplying the propellant fluid to the jet pumps connected in parallel (100) and a common actuating mechanism (320, 320A, 420, 420B, 520, 520A, 520B, 520C, 520D) for selectively opening and closing the common pressure line (310) for individual,several or all of the parallel-connected jet pumps (100) are present. Furthermore, a refrigerant circuit (200) with at least one such jet pump unit (300) is proposed.

The utility model discloses a steam pressure adapter, including the adapter casing with steam chamber, be located in the multiple injector of casing, the injector is along the axis direction of matching casing and arranges periphery, is provided with the mixing cavity in the injector, the injector still is provided with the mixing channel respectively with the communication of mixing cavity and steam chamber, still be provided with the adjusting assembly for the plugging of mixing channel in the steam chamber, and adjusting assembly is by a plurality of regulating valve, and the regulating valve includes the plate that is used for driving regulating valve and goes up and down the lifting link of rotation connection with the plate of lifting, and the top of regulating valve has the pushed part, and the top wall in the steam chamber is fixed with the guide convex part, and the guide convex part is located the pushed part directly above. After one injector keeps long time work, can make the plate rotate, make another injector carry out long time work to make different injector all carry out certain loss, and avoid the serious loss of certain injector, and improve the service life of steam pressure adapter indirectly.

The utility model discloses a steam jet pump, including the pump body and its inside chamber, the chamber inside is provided with mixing chamber, compression chamber, throat pipe and expansion chamber in proper order, and the communicating pipe is communicated with the chamber on the pump body, and the steam inlet and steam outlet of pump body and the communicating pipe are all set up a plurality of groups of through -hole for bolt to pass through on the one end away from the pump body, and the through -hole all is provided with fixed cylinder, and the fixed cylinder is provided with the locating cylinder, and the locating cylinder is provided with internal thread in, and the locating cylinder is located fixed cylinder outside one end and is equipped with gear, and the steam inlet and steam outlet and the communicating pipe each side to the pump body is provided with drive ring, and the drive ring inner wall is provided with the rack that is engaged with the gear, and the conventional pump body's each interface is all provided with a plurality of groups of bolt nut and is connected and is installed, and personnel one one is very troublesome to tighten and dismount, and it is not convenient when replacing maintenance, the utility model discloses can improve the dismounting efficiency of pump body butt joint.

We provide a portable bladeless fan that produces a powerful, low-noise breeze with high air pressure and force. [Solution] A portable bladeless fan comprising a housing 1 having an intake section 11 on the rear side and an outlet section 12 on the front side, wherein the intake section 11 and the outlet section 12 are in communication within the housing 1; a mixed-flow fan 2 provided within the housing 1 and rotating around a rotation axis 212 to generate airflow; and a pressurizing member 3 connected to the front portion of the housing 1 and located in front of the mixed-flow fan 2, including a pressurizing seat 31 and a plurality of second blades 32.

A method for pumping a liquid-gas mixture into a subsurface well includes introducing gas into a liquid at a first pressure to generate a mixture. The mixture is pumped through a first positive displacement pump to a second pressure greater than the first pressure. The mixture at the second pressure is pumped through at least a second positive displacement pump to a third pressure greater than the second pressure. The mixture is moved into the subsurface well at at least the third pressure.

The present application provides a catalyst regeneration energy recovery heat pump system, belonging to the technical field of heat pump. The outside has an air channel connected with an internal combustion engine through a compressor and a high-temperature heat exchanger, and has a fuel channel connected with the internal combustion engine. The internal combustion engine has a gas channel connected with the outside through a high-temperature steam generator and a low-temperature steam generator. A second compressor is connected with a heat supplier. The heat supplier is connected with the low-temperature steam generator through a booster pump and is connected with an evaporator through a throttle valve. The evaporator is connected with a jet pump low-pressure port. The low-temperature steam generator is connected with a jet pump high-pressure port. The jet pump is connected with the second compressor. A liquid medium pipeline is connected with the second jet pump high-pressure port through a second booster pump and the high-temperature steam generator. A heated medium channel is connected with the second jet pump low-pressure inlet through the heat supplier. The second jet pump is connected with the outside. The internal combustion engine has a cooling medium channel. The high-temperature heat exchanger has a high-temperature heat medium channel. The evaporator has a low-temperature heat medium channel connected with the outside, forming an energy-carrying internal combustion engine combined cycle heat pump system.

The application discloses a hydrogen production process waste heat cascade utilization system for a natural gas power station, and belongs to the technical field of hydrogen energy preparation and energy cascade utilization. The system comprises a natural gas power generation unit, a methane reforming hydrogen production unit, a passive refrigeration unit, a hydrogen liquefaction precooling unit and a domestic hot water supply unit. The working process is as follows: high-temperature flue gas is generated by burning natural gas, and the high-temperature flue gas is used to drive power generation; the flue gas after power generation is introduced into the methane reforming hydrogen production unit, and the waste heat of the flue gas is used for a methane reforming reaction to produce hydrogen; the used flue gas is continuously introduced into the passive refrigeration unit as a driving heat source, and the passive refrigeration unit generates cold energy through a mechanical compression-free refrigeration cycle; the hydrogen to be liquefied is introduced into the hydrogen liquefaction precooling unit, and the cold energy is used to precool the hydrogen in multiple stages, so that the temperature of the hydrogen is reduced to a required temperature before deep cooling. The required working medium cold energy is accurately and efficiently converted, so that the energy self-sufficiency and synergistic effect of hydrogen production and hydrogen liquefaction are realized.

This application provides a jet-type air ejector, relating to the field of air ejectors. The jet-type air ejector includes an air ejector body, which comprises a flange-connected mixing chamber and a throat. A connecting seat is fixedly installed at the bottom of the mixing chamber, and a main support seat is provided at the bottom of the connecting seat. Multiple sets of support sub-seats for supporting the throat are provided on one side of the main support seat. A spacing adjustment mechanism is provided between the multiple sets of support sub-seats. The main support seat includes a first movable seat and multiple sets of electrically operated telescopic rods for providing different height adjustments to the mixing chamber. This jet-type air ejector allows for stepless adjustment of the overall height of the mixing chamber via the electrically operated telescopic rods of the main support seat. Combined with the sleeve-type support columns of the support sub-seats, independent height fine-tuning of each support point of the throat can be performed, solving the problems of low efficiency and poor accuracy of traditional shim leveling, and ensuring precise alignment of the mixing chamber and the throat axis.

This invention provides a multiphase flow pump with anti-gas-clogging capability, belonging to the field of pumping device technology. Its purpose is to solve the technical problem that when a multiphase flow pump operates at high gas content, gas easily accumulates at the center of the impeller, forming gas blockage, leading to a sharp decline in pump performance or even failure. The multiphase flow pump includes: a pump body containing an impeller; a duct with its suction end near the impeller's flow-facing surface and its other end connected to a flexible regulating pipe section with an opening in the downstream direction; a regulating pipe connected to the pump body's outlet and containing the flexible pipe section; an regulating component acting on the middle of the flexible pipe section to adjust its cross-section; and a pressure-tapping pipe, one end located at the suction end and the other end connected to the regulating component. It utilizes the pressure change at the impeller center to drive the regulating component to change the cross-section of the flexible pipe section, forming an adaptive Venturi suction pressure differential and actively removing accumulated gas. This multiphase flow pump utilizes the pump's own fluid kinetic energy to construct an adaptive suction pressure differential, possessing the advantage of actively eliminating gas blockage and maintaining high-efficiency operation without the need for external energy.

The application relates to an energy-saving jet pump with a band saw blade air inlet, which comprises a jet pump body, a working fluid inlet is formed in the right side of the jet pump body, a mixed fluid outlet is formed in the left side of the jet pump body, a first crushing component is arranged in the inside of the jet pump body, a second crushing component is arranged in the left side of the first crushing component, and a third crushing component is arranged in the left side of the second crushing component. The application can gradually crush the large vortex formed at the air inlet hole of the fluid by arranging multiple groups of crushing components in the inside of the jet pump body, solves the problem that the air inlet hole of the existing jet pump is usually a simple circular straight hole or a smooth horn mouth, and when the working fluid passes through the throat at high speed, intense vortex and air resistance are generated at the air inlet hole, thereby reducing energy loss, reducing vibration and cavitation, not being prone to blockage, improving efficiency, reducing energy consumption and failure rate.

An air amplifier (3) for directing airflow from a fan assembly (1), and a fan assembly (1) comprising an air amplifier (3). The air amplifier (3) comprises an inlet for receiving airflow from the fan assembly (1) and an airflow cavity (7). The airflow cavity (7) comprises a first wall (11) and a second wall (13) which define an airflow passage (15) extending towards an exhaust outlet (17) for discharging air. A lip (19) is provided at or towards a front edge (11)a of the first wall (11). The lip (19) extends towards the second wall (13) thereby partially inhibiting airflow from the exhaust outlet (17).

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) by 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 an adjusting needle (130) is provided for setting a minimum cross-section of the primary nozzle (103), wherein the adjusting needle is configured to set a maximum cross-section of the primary nozzle downstream of the minimum cross-section depending on the set minimum cross-section. Furthermore, a refrigerant circuit (200) with such a jet pump (100) is proposed.

The application provides a bladeless fan, comprising: a shell provided with a cavity, an air inlet and an air outlet communicating with the cavity; a fan assembly arranged in the cavity and used for sucking air into the cavity from the air inlet and blowing the air out from the air outlet; the shell comprises a first member and a second member, and the first member and the second member form the cavity and the air outlet; wherein the second member comprises a base and a first flow guide part, the base is arranged with the fan assembly, the first flow guide part extends from the base, the first flow guide part is arranged at the radial outer side of the fan assembly, and the angle between the axial direction of the fan assembly and the horizontal direction is less than 60 degrees. The approximately horizontal air inlet / outlet can relatively shorten the airflow path, compared with the vertical air duct which needs to consume wind energy through multiple turning. The air duct structure of the application reduces the resistance loss. Moreover, the axial direction of the fan assembly is arranged in parallel with the horizontal direction, the airflow path is shortened, the gas short circuit and backflow are avoided, and the fan is closer to the user's blowing demand.

Various examples are provided related to airlift pumping of downhole geothermal fluids. In one example, an airlift system includes a compressor; a gas sparger head in a wellbore of a geothermal well, and a pressure head recycle assembly. The sparger head produces artificial lift of the geothermal fluids by injecting a gas resulting in a difference in density downhole. The entrained gas can be extracted by the pressure head recycle assembly, compressed, and reinjected downhole. The geothermal fluid at the well head can be used in direct use applications or in a thermodynamic cycle to make shaft power. The gas sparger head can include a venturi shaped passage extending through the gas sparger head and a bubble orifice including gas orifices radially spaced about a narrow portion of the venturi shaped passage. The gas orifices can have a corresponding resonant chamber through which the gas (e.g., air) is provided.

A conveying device for conveying a liquid / gas mixture, in particular a crude-oil / natural-gas mixture, taken from a borehole, having a multiphase-pumping device, which can be or is coupled to a feed line and a discharge line and to which the liquid / gas mixture can be fed as a feed flow, via the feed line and via which the mixture can be discharged under increased pressure as a conveyance flow, into the discharge line, and having a recirculation line, via which a sub-flow of the liquid contained in the conveyance flow can be returned to the feed flow. The recirculation line contains an injector, through which the sub-flow is conducted, with a negative pressure being generated in the process, and which can be or is coupled to a gas line, which conducts a gas taken from the borehole. The negative pressure causes the gas to be taken in by suction.

The present application relates to the technical field of jet pump, especially to a coalbed methane well double-pipe jet pump and a control method thereof; the double-pipe jet pump comprises a jet pump, a flushing pipe, a check valve, a coupling, a tail pipe and a flushing valve core; the jet pump is connected with the flushing pipe; the check valve is arranged at the end of the flushing pipe away from the jet pump; the tail pipe is arranged at the end of the check valve away from the flushing pipe; the tail pipe is connected with the check valve by sleeving the coupling; the flushing pump core is further arranged in the flushing pipe; the flushing pump core moves along the axial direction of the flushing pipe in the flushing pipe by hydraulic pushing; the check valve is provided with a valve ball; the flushing valve core attracts the valve ball by setting electromagnetic force to control the check valve to be conducted in flushing; the inside of the double-pipe jet pump is descaled.

In an aspect of the invention there is provided a method comprising: pumping fluid from a first source of fluid into a first, motive, fluid store by means of a mechanical pump and storing the fluid under pressure in the first fluid store; releasing fluid under pressure from the first fluid store and supplying the fluid to a motive fluid inlet of a first ejector; drawing further fluid from the first or a further fluid source into the pumping inlet of the first ejector by means of the fluid supplied to the motive fluid inlet; storing fluid output from an outlet of the first ejector in a second fluid store.

An ejector device 100 for reducing a pressure at a vacuum pump exhaust 110 by introducing a flow of gas into a process gas exhaust flow between the vacuum pump and a process gas treatment system. The

A device is needed that circulates the internal air without requiring electricity and without any mechanically moving parts. [Solution] The solution is provided by an air flow generating device comprising: a main conduit arranged on the moving body, having a first opening communicating with the air intake of the moving body and a second opening communicating with the air outlet of the moving body, such that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; an induction hole drilled in the wall surface of the main conduit between the first and second openings; a flow outlet communicating with the induction hole; and a flow inlet arranged in the second atmosphere inside the moving body.