376results about "Jet pumps" patented technology

The disclosure describes an expanding drill device for expanding a pilot bore by moving the expanding drill device along a specified drilling line comprising: a housing; a drill head that has a cutting wheel which is arranged on the drill side of the expanding drill device so as to be rotatably mounted and driven about a rotational axis and relative to the housing and on which at least one drill tool for loosening the ground or the rock is arranged; and a drill-side connection for producing a connection to a pipe section located in the pilot bore on the drill side, wherein the drill side centrally has at least one receiving chamber for the loosened ground or the loosened rock, said receiving chamber being connected to a material conveyor device of the expanding drill device.

The embodiment of the invention discloses an ultrahigh compression ratio adjustable ejector and a variable working condition performance optimization design method thereof. The adjustable ejector comprises a nozzle, an adjusting cone, a suction chamber, a mixing chamber and a diffusion chamber, wherein working fluid is introduced into the nozzle, the adjusting cone is arranged at the throat part of the nozzle, and the fluid to be ejected is introduced into the suction chamber; the adjusting cone is formed by alternately and repeatedly connecting cylindrical surface sections and conical surface sections, and the adjusting cone can axially move; the method comprises the steps that the pressure of working fluid input into the adjustable ejector is monitored; when the pressure of the working fluid is changed between the first pressure and the second pressure, the adjusting cone is axially moved, and each cylindrical surface section directly faces the throat part in sequence, so that step type adjustment of the pressure of the working fluid is realized; when the pressure of the working fluid is changed between the second pressure and the fourth pressure, the adjusting cone is axially moved, and each conical surface section directly faces the throat part in sequence, so that the continuous adjustment of the pressure of the working fluid is realized; the mass flow of the ejected fluid in the adjustable ejector belongs to a preset range; the first pressure, the second pressure, the third pressure and the fourth pressure are gradually increased in sequence.

The invention relates to an underground multi-mode overflow monitoring system and method, and belongs to the technical field of well drilling monitoring, the system is arranged in an axial through hole of a drill collar body, and the system comprises a central fluid channel assembly comprising a Venturi tube section communicated with the through hole; the annular sensor array assembly comprises a barrel which is arranged on the outer side of the Venturi tube section in a sleeving mode and attached to the inner wall of the drill collar body, an annular flow channel is formed in the position, corresponding to a high-pressure area of the Venturi tube section, in the barrel, one end of the annular flow channel is closed, and the other end of the annular flow channel is a Venturi drainage ejector communicated to the high-pressure area of the Venturi tube section; the annular flow channel is provided with a plurality of drainage channels, and the annular flow channel is provided with a multi-mode sensor along the circumferential inner wall of the annular flow channel; a plurality of sampling holes communicated with the drainage channel are formed in the drill collar body; the system further comprises a processor, all the sensors are connected with the processor, and the processor communicates with the measurement-while-drilling system. The method and the device have the effect of improving the stability of monitoring work in a complex drilling environment.

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 utility model relates to the technical field of negative pressure devices, in particular to a water circulation negative pressure device which comprises a negative pressure tank connected with a negative pressure pipe. The inlet end of the water circulation vacuumizing assembly is communicated with the negative pressure tank through an air inlet pipe, the outlet end of the water circulation vacuumizing assembly is connected with a circulating water assembly through an exhaust pipe, and the circulating water assembly is provided with an exhaust port; and one end of the drainage pipe is connected with the lower end of the circulating water assembly, the other end of the drainage pipe is connected with the inlet end of the water circulation vacuumizing assembly, a first valve control assembly is installed on the drainage pipe, and the first valve control assembly is electrically connected with the control assembly. Noise and energy consumption are reduced, and the device is not sensitive to impurities in gas.

The utility model provides a connecting and positioning device of a steam ejector adjusting cone, and belongs to the technical field of steam ejectors. The problems that an existing adjusting cone connecting and positioning device is insufficient in coaxiality, poor in stability and insufficient in sealing are solved. The device comprises an adjusting cone, a connecting assembly, a positioning assembly, an actuator and an injection chamber end plate, the adjusting cone comprises a cone head, a cone rod and a cone tail which are sequentially connected through a connecting assembly, and the cone tail penetrates through the end plate of the injection chamber to be connected with the actuator; the positioning assembly comprises a shaft sleeve assembly, a center pipe and inclined supporting plates, the adjusting cone sequentially penetrates through the shaft sleeve assembly and the center pipe and then is inserted into the injection chamber, the upper end of the center pipe is fixedly connected with an end plate of the injection chamber, and the inclined supporting plates are evenly distributed in the circumferential direction of the center pipe. According to the utility model, the interference fit of the stud and the screw sleeve is ensured by a hot charging method, the coaxiality and firm connection of the adjusting cone in the large steam ejector are ensured, the adjusting cone is effectively prevented from loosening under the high-speed flow and vibration of steam, and the connection stability of the device is improved.

A fan assembly comprising an airflow generator and a nozzle. The nozzle comprising a body defining an air inlet to receive generated airflow, an air outlet section, and a switching member. The switching member switches between a first position, delivering only a first airflow to the outlet, and a second position, delivering both first and second airflows. The air outlet section comprises a first inlet for the first airflow, a second inlet for the second airflow, an air outlet for emitting airflow from the fan assembly, and pathways between the first inlet and the air outlet. In the first position, the first airflow travels along the first pathway and is emitted in a first outlet direction. In the second position, the second airflow interacts with the first, redirecting it along the second pathway, and emitting it in a second, different outlet direction.

The utility model relates to the technical field of bathroom products, in particular to a water temperature digital display device for a bathroom shower head, which comprises a hydroelectric generation component arranged on the shower head, a battery, a temperature sensor, a microcontroller and a digital display component, according to the hydroelectric generation assembly, a pressurizing plate is arranged in a water inlet pipe of a shower head, a rotating coil is rotatably arranged in the water inlet pipe through a rotating shaft, the pressurizing plate is provided with a plurality of jet flow holes, the jet flow holes convert kinetic energy of water flow into pressure energy to pressurize water, and the flow speed of the water flow is increased after the water flow penetrates through the jet flow holes; therefore, the rotating coil rapidly rotates to generate electricity under the impact effect of water flow, the generating voltage of the hydroelectric generation assembly is kept stable, even if the water pressure is small and unstable, the digital display component can normally display the water temperature, and the problems that an existing digital display bathroom shower head on the market is unstable in water pressure and inconvenient to use are solved. And the digital display screen does not display the water temperature or splash screen at low brightness.

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 invention discloses a water softening valve and a water softening machine, and relates to the technical field of water softening machines, a valve body of the water softening valve is provided with a valve cavity, a grating assembly comprises a plurality of supporting baffle rings arranged at intervals, the outer peripheries of the multiple supporting baffle rings abut against the inner circumferential face of the valve cavity, and a water passing cavity is formed between every two adjacent supporting baffle rings; the piston is connected to the inner peripheries of the supporting baffle rings in an inserted mode and comprises a first piston body and a second piston body which are connected, the diameter of the first piston body is larger than that of the second piston body, the first piston body is provided with a water passing channel with the two ends communicated, and a first water passing ring groove is formed in the periphery of the first piston body. A second water passing ring groove is formed in the periphery of the second piston body, and the supporting baffle ring abuts against the piston to block communication between the corresponding water passing cavities. In the process that the piston moves in the axial direction of the valve cavity, the first piston body is at least connected with the inner peripheries of the two supporting baffle rings in an abutting mode. According to the technical scheme, the sealing performance of the soft water valve can be improved.

To provide an ejector capable of quickly detecting pressure abnormality of a working fluid, and a fuel cell system having the ejector.SOLUTION: According to one aspect of the present invention, the ejector 14 includes the spring 81 that biases the inner nozzle 56 in the front end direction, the inner nozzle 56 includes the pressure receiving portion 82 that receives the pressure of the first operating fluid 55a in the rear end direction against the biasing force of the spring 81 on the rear end side of the inflow port WF1 of the outer nozzle 55, and the biasing load of the spring 81 is larger than the load received by the pressure receiving portion 82 when the pressure of the first operating fluid WF1 is normal and is smaller than the load received by the pressure receiving portion 82 when the pressure of the first operating fluid WF1 is abnormal.SELECTED DRAWING: Figure 3

A fluid accelerator for mixing and pumping one or more fluids through a system. The fluid accelerator includes an adjustable flow through needle that leverages the Coandă effect to lower the required mass flow rate of a motive fluid while increasing the lift pressure of a suction fluid entrained by the motive fluid in the fluid accelerator. The needle can be adjusted within a first motive fluid channel to address changing flow conditions. The needle includes a second motive fluid channel that redirects the flow of a portion of the motive fluid within the first motive fluid channel through the needle into a mixing section, which creates the Coandă effect in the mixing section.

We provide jet modules and active jet systems. [Solution] The jet module M has a main body M1, and inside the main body are a transport chamber M10 and an annular airflow generation chamber M1. A gas input section M2 is provided at one end of the main body, a gas output section M3 is provided at the other end of the main body, and an outward-extending airflow introduction section M4 is formed on the side of the main body. The transport chamber, gas input section and gas output section are in communication with each other, and the transport chamber, annular airflow generation chamber M11 and airflow introduction section are also in communication with each other. The annular airflow generation chamber has a side connection section M110 and a nozzle section M111, and the side connection section and the nozzle section are in communication with each other. The side connection section is connected to the airflow introduction section, and the nozzle section is connected to the transport chamber. The nozzle section is arranged to generate a push airflow toward the transport chamber via a predetermined path.

The application discloses a kind of composite type steam injection vacuum pump unit of green energy utilization system, comprising: vacuum crystallizer, first condenser, for the condensation unloading of condensable gas in mixed gas in vacuum crystallizer, second injection pump, its mixed gas inlet is connected with the primary side outlet of first condenser, second condenser, for the condensation unloading of condensable gas in mixed gas being extracted by second injection pump and being sent into it, third injection pump, its mixed gas inlet is connected with the primary side outlet of second condenser, third condenser, for the condensation unloading of condensable gas in mixed gas being extracted by third injection pump and being sent into it, wherein, cooling water system is natural water source, cooling tower or refrigeration equipment, and water supply water temperature is 1.0-15.0 degrees;The application can utilize natural water source to achieve the effect of reducing steam consumption, reduce cost, under the condition of 1.0-15.0 degrees low temperature, can save steam volume by 85-90% at most.

The ejector is provided with a nozzle part (71) and a main body part (72). A suction port (721), a mixing part (722) and an outlet (724) are formed in the main body part (72). The mixing part (722) is provided with a necking-down mixing part (722a) and a flaring mixing part (722b). The necking-down mixing section (722a) accelerates the speed of the mixed fluid to a sound velocity or higher. The flared mixing section (722b) generates a shock wave from the mixed fluid flowing out of the necking-down mixing section (722a), and disappears the generated shock wave. The necking-down mixing section (722a) forms a fluid passage having a shape in which the cross-sectional area of the passage is reduced in the flow direction of the mixed fluid. In addition, the flared mixing section (722b) forms a fluid passage having a shape in which the passage cross-sectional area expands in the flow direction of the mixed fluid.

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 present invention discloses a multi-ejector vacuum generator (2) for vacuum generating pump (100) comprising three stages (50,51,52) and four nozzles (62-65), each stage comprising a vacuum chamber and diaphragms (53) configured to act as one-way valves; wherein, the distal end of the first nozzle (62) is connected to the vacuum chamber of the first stage (50) in its proximal portion; the proximal end of the second nozzle (63) is connected to the first stage (50) vacuum chamber in its distal portion; the distal end of the second nozzle (63) is connected to the second stage (51) vacuum chamber in its proximal portion; the proximal end of the third nozzle (64) is connected to the second stage (51) vacuum chamber in its distal portion; the distal end of the third nozzle (64) is connected to the third stage (52) vacuum chamber in its proximal portion; and the proximal end of the fourth nozzle (65) is connected to the third stage (52) vacuum chamber in its distal portion. The present invention also discloses a vacuum generator pump (100) comprising a multi-ejector vacuum generator (2) as defined by the present invention and comprising a multi-ejector vacuum generator fastening means as defined by the present invention.

The invention belongs to the field of aviation lubricating oil system accessory structure design and test verification, and discloses a lubricating oil heat dissipation ejector with an improved ejection ratio and a test method and device.The test device comprises a front air duct, a lubricating oil radiator, a to-be-verified lubricating oil heat dissipation ejector and a rear air duct; a front air duct and a rear air duct are respectively arranged in front of and behind a lubricating oil radiator, a lubricating oil radiating ejector is arranged on the lubricating oil radiator, a sealing gasket is covered outside the lubricating oil radiating ejector, and a hot edge inlet pipeline is arranged at an inlet of the lubricating oil radiating ejector; driving fluid enters through the front air duct, and mixed air flows out through the rear air duct; and the hot side inlet pipeline and the rear air duct are provided with flowmeters. According to the optimization and improvement design and test verification method for the lubricating oil heat dissipation ejector, a process route combining integrally-cast titanium alloy forming with high-smoothness inner wall machining is adopted, 3D printing special-shaped air duct test verification and a heat-flow coupling simulation analysis technology are matched, and it is ensured that the product can meet the requirement of an aero-engine.

An airflow generator including a ducted fan and a plurality of air multipliers for discharging air along a first axis, each air multiplier including an inlet and an outlet, said ducted fan being fluidly connected to the inlets (8) of the air multipliers, wherein the air multipliers are differently sized to provide airflows of different cross-sectional size, and are positioned such that smaller ones of the air multipliers provide airflows reinforcing a respective sub-portion of the airflows provided by larger air multipliers, and wherein the air multipliers are distributed along the first axis.

The utility model relates to the technical field of inflating devices, and discloses an inflating device for assembling an air film building, which is characterized in that a centrifugal fan, a venturi tube, a vertical tube and the like are arranged to accelerate the flow velocity of air and introduce other air, and an air inlet of the air film building is hermetically connected with a diffusion section by using devices such as a connecting tube and the like. Then a centrifugal fan and a frequency converter are started, a fan body sucks in external air through an air inlet pipe and blows the external air into an air outlet pipe, the air outlet pipe transmits wind power into a Venturi pipe, then the wind power is compressed through a storage section to enable the wind power to rapidly flow when reaching a throat pipe section, and meanwhile air in a vertical pipe is introduced into the venturi pipe; and the air volume and the air speed blown into the air film building are increased, and the effect of rapidly blowing more air is achieved.

To provide an ejector that can prevent backflow of working fluid into the gas supply system. [Solution] The ejector 1 has an orifice section 13, a reservoir section 18, and a suction groove 19. Working fluid flows through the orifice section 13. The reservoir section 18 is formed around the orifice section 13 and gas is drawn in through it. The suction groove 19 is formed around the orifice section 13 and supplies the gas from the reservoir section 18 to the orifice section 13. The groove width of the suction groove 19 is set to 100 μm or less.

The invention belongs to the technical field of fluid conveying equipment, and particularly relates to a steam-jet pump with a detachable nozzle. The steam jet pump with the detachable nozzle comprises a pump body and a core assembly. The pump body comprises a containing cavity and a suction chamber which communicate with each other. The core assembly is detachably arranged on the pump body and comprises a base shaft and a nozzle arranged at one end of the base shaft, the base shaft and the nozzle are at least arranged in the containing cavity, and the outlet end of the nozzle extends into the suction chamber. According to the application, the core body assembly integrated with the basic shaft and the nozzle is integrally disassembled, and a new core body assembly is installed, so that the time required for replacing the nozzle is shortened, the cost is reduced, and the working efficiency is improved.

A flow divider (1) is provided with: a housing (11); an injection main body (12) provided inside the housing (11); an air suction port (13) provided in the upper part of the housing (11); an exhaust port (14) provided in the lower part of the housing (11); a working fluid storage unit (15) which is provided at the bottom of the housing (11) and which stores a working fluid; an injection nozzle (16) that injects the vapor of the working fluid, which is heated and evaporated by the heater, in the downward direction; and a temperature adjustment pipe (17) provided so as to surround the housing (11). The working fluid is an alkali metal or a low-boiling-point metal.

A transformer arrangement comprising an airflow generator and a transformer provided with an oil-to-air external heat exchanger, the airflow generator being configured to discharge air towards the oil-to-air heat exchanger. The airflow generator comprises an electrically powered ducted fan, a fluid conduit, an air multiplier for discharging air along a first axis, and an airflow redistribution device axially displaced from the air multiplier along a first axis, downstream of the air multiplier. The airflow redistribution device is configured to redirect airflow from regions of higher speed airflow discharged from the air multiplier to regions of lower speed airflow discharged from the air multiplier, thereby promoting a more even distribution of airflow speeds downstream of the airflow redistribution device.