43 results about "Cylinder flow" patented technology

The utility model relates to a reaction kettle which comprises a kettle body and a driving mechanism arranged on the kettle body, a guide cylinder and a stirrer linked with the driving mechanism are arranged in the kettle body, a plurality of transverse baffle rings are arranged on the inner circumferential wall of the guide cylinder, and a plurality of openings positioned on the lower side of each transverse baffle ring are formed in the circumferential wall of the guide cylinder. An annular frame linked with the driving mechanism is further rotatably arranged on the peripheral wall of the flow guide cylinder, a plurality of arc-shaped plates capable of covering the openings are arranged on the annular frame, the number of the arc-shaped plates corresponds to that of the openings, and when the annular frame rotates, the arc-shaped plates alternately open or close the openings, so that the flow in the flow guide cylinder flows from top to bottom under the action of the stirrer, and the flow in the flow guide cylinder is uniform. The flowing sectional area of the fluid at each transverse baffle ring is shrunk and expanded, so that the fluid is accelerated and then decelerated, and multi-stage shearing and turbulent flow are generated; meanwhile, the opening circulation on the guide cylinder is opened and closed, so that the dynamic change of the flow field structure between multi-stage shunting circulation and single bottom return is realized, and the mixing efficiency of the reaction kettle is improved.

The invention discloses an auxiliary oil return control system, an auxiliary oil return control method and a drilling machine in the technical field of engineering machinery, and aims to solve the problems that in the prior art, the pressure building phenomenon often occurs, danger is brought to work of the drilling machine, and the safety of the system is affected. The hydraulic system comprises a main valve and a pump, a port A of the main valve is connected with a rod cavity of a first oil cylinder and a rod cavity of a second oil cylinder at the same time, and a port B of the main valve is connected with a rodless cavity of the first oil cylinder and a rodless cavity of the second oil cylinder at the same time; the control assembly comprises a port P2, a port A1 and a port B, a port P of the pump is connected with the port P2, and a rodless cavity of the first oil cylinder and a rodless cavity of the second oil cylinder are both connected with the port A1; the port A1 and the port B of the control assembly can be communicated, so that part of oil in the rodless cavity of the first oil cylinder and the rodless cavity of the second oil cylinder flows into the oil tank through the control assembly, it is guaranteed that the oil flows out stably, the pressure building condition is prevented, and the stability and safety of the hydraulic system during working are guaranteed.

Engine system, with: an engine with a plurality of cylinders (11-14) suitable for generating a driving torque by burning fuel; a first intake manifold (31) which is connected to an intake pipe (20) through which intake air flows into a part of the majority of cylinders; a second intake manifold (32) which supplies the intake air through the first intake manifold (31) to another part of cylinders of the plurality of cylinders (11-14); a first exhaust manifold (41) which is connected to a part of the cylinders which is connected to the first intake manifold; a second exhaust manifold (42) which is connected to another part of the cylinders which is connected to the second intake manifold (32); a return line (60) branched off from the second exhaust manifold (42) to be coupled to the second intake manifold (32); a recirculation inlet valve (61) located at the point where the recirculation line (60) and the second exhaust manifold (42) are connected; and a manifold connecting valve (63) which is arranged on an inlet line (20) between the first inlet manifold (31) and the second inlet manifold (32), wherein, when some cylinders are deactivated, the recirculation inlet valve (61) is open to supply exhaust gas from the second exhaust manifold (42) to the second inlet manifold (32), and the manifold connecting valve (63) is cut off in order to prevent intake air from being supplied through the first intake manifold (31) to the second intake manifold (32), and the entire exhaust gas flow rate from the deactivated cylinders flows back into the deactivated cylinders.

The utility model relates to the technical field of shock absorbers, and discloses a segmental control damping automobile shock absorber, which is characterized in that a pull ring is fixedly arranged on the bottom surface of a lower protective sleeve, an upper protective sleeve is arranged on the upper side of the lower protective sleeve, a fixed block is fixedly arranged on the top surface of the inner side of the upper protective sleeve, a telescopic rod is fixedly arranged on the bottom surface of the fixed block, and the telescopic rod is fixedly arranged on the bottom surface of the fixed block. A fixing block is fixedly installed on the bottom face of the inner side of the lower protective sleeve, an oil storage cylinder is fixedly installed on the top face of the fixing block, the telescopic rod is movably arranged on the inner side of the oil storage cylinder, and an auxiliary spring is fixedly installed between the telescopic rod and the oil storage cylinder. According to the segmented damping control automobile shock absorber, the shock absorber is installed at the position, needing shock absorption, of an automobile body through the pull rings on the upper protective sleeve and the lower protective sleeve, and when the automobile body encounters a bumpy road surface in the running process, the automobile body presses the spring downwards after being pressed by gravity, so that shock absorption is achieved. And at the moment, hydraulic oil stored in the oil storage cylinder flows out upwards through the groove to form resistance.

The invention discloses a snorkeling piston and diversion circulation engine and a power generation method thereof. The snorkeling piston and diversion circulation engine comprises a supporting mechanism system, a three-cylinder diversion system, a snorkeling piston, a diversion gate, a diversion gate controller, a starting and braking system, an intelligent control system and the like. After liquid is injected into the three-cylinder flow guide system, the submerging piston continuously does circulating reciprocating motion under the synergistic effect of liquid buoyancy and self gravity, and the liquid in the three-cylinder flow guide system continuously and circularly flows in the three fluid cylinders. The submerging pistons on the left side and the right side of the engine center shaft and the liquid continuously generate gravitational torque difference and torque difference, the engine rotating large disc and the engine center shaft are driven to rotate, and high-quality power is continuously provided for generators, communication and transportation equipment, industrial equipment and the like. The whole power generation and use process does not need to consume any fossil energy and nuclear materials, and does not need to use unstable natural forces such as wind power, river water, sea waves, tides, terrestrial heat, solar energy and the like.

The utility model discloses a cold drink machine which comprises a box body, a supporting seat and a water collecting tray, the supporting seat is installed on the box body, a material preparing area is arranged on the supporting seat, a refrigerating area is arranged in the box body, and a refrigerating assembly is arranged in the refrigerating area. A driving assembly and a horizontally arranged material making barrel are arranged in the material making area, a stirring assembly is arranged in the material making barrel, the driving assembly is in transmission connection with the stirring assembly, and the refrigerating assembly supplies cold to the material making barrel; a detachable mounting opening is formed in one side of the box body, the water collecting disc is mounted in the supporting seat through the detachable mounting opening, and a water receiving groove in the water collecting disc is located below the material making barrel. According to the utility model, the material flowing out of the material making barrel can be collected, the cleaning process is reduced, and the use comfort of a user is improved.

The invention relates to a forging return stroke electro-hydraulic system adopting discrete liquid volume units and a control method.The system comprises a plurality of oil tanks connected with a controlled pressure containing cavity in parallel at the same node, and the first end and the second end of each oil tank are connected with a reversing valve and a one-way valve correspondingly to form a volume unit capable of being independently gated; all the oil tanks jointly form a parallel oil tank group; the plunger type cylinder is connected with a node of the parallel oil tank set, oil in the plunger type cylinder flows into the return oil tank to be compressed when the hammer head enters, and oil in the return oil tank flows into the plunger type cylinder to provide return force for the hammer head when the hammer head retreats. According to the working frequency requirement, the forging force requirement and the oil elasticity modulus fluctuation condition of the hammer head, the return stroke oil tank is controlled to reach the maximum volume allowed by the working condition through the combination of discrete volume units, and meanwhile the set pressure of the system is adjusted according to the maximum pressure value of the plunger cavity; the pressure curve of the plunger cavity can cover the minimum return stroke pressure requirement in real time, and the return stroke requirements of the hammer head under various working conditions of different working frequencies, forging forces and different oil liquid elasticity moduli in a large range are met.

This invention discloses a method and system for controlling the side mold stroke of a casting equipment. The method includes: acquiring real-time position data of the side mold, pressure data of the hydraulic system, and temperature data of the mold contact surface through a multi-sensor fusion module; constructing a dynamic friction and thermal deformation coupling model during the side mold movement based on the real-time position data, pressure data, and temperature data, and predicting the position deviation trend in the current stroke stage; generating a dynamic compensation strategy for the side mold stroke based on fuzzy adaptive PID according to the position deviation trend and the preset mold closing accuracy requirements; executing the dynamic compensation strategy by adjusting the hydraulic cylinder flow and pressure in real time through a high-frequency servo valve group, and completing the position closed-loop correction within one stroke cycle. Using this invention, real-time prediction and accurate compensation of complex disturbances in the side mold stroke can be achieved, improving mold closing accuracy and stability, while ensuring the reliability of the equipment and the consistency of casting quality under high-speed continuous production.

A valve flushing method and apparatus, and an electronic hydraulic braking system. When a vehicle is powered off, the electronic hydraulic braking system automatically enters a power retention state, at which point a valve flushing process is triggered. The process comprises: first controlling CSV valves to close and PSV valves to open (S101); then controlling a pressure build-up cylinder to perform pressure build-up, such that fluid in the pressure build-up cylinder flows into wheel ends via the PSV valves and IV valves (S102); when it is detected that the hydraulic pressure of the pressure build-up cylinder remains stable, controlling the PSV valves to close, so as to maintain the pressure (S103); then controlling OV valves to open to relieve the pressure, such that the fluid flows out of the wheel ends via the OV valves so as to flush valve bodies by means of fluid flow (S104); and upon expiration of a set opening duration of the OV valves, controlling the OV valves to close, and controlling the pressure build-up cylinder to perform fluid replenishment (S105).

The invention provides a high-speed mechanical unloading device and method. The device comprises a bulk solid supporting block, a bulk solid supporting block tray, a bulk solid supporting block cover plate, a mass block, an oil cylinder, a hydraulic center, a high-pressure experiment bin, an oil cylinder piston and the like. The mass block is used for sealing ore and high-pressure water in the high-pressure experiment bin; the bulk supporting block penetrates through the wall of the high-pressure experiment bin and is supported at the middle lower part of the mass block, and the lower part of the bulk supporting block is supported in the bulk supporting block tray; the bulk supporting block cover plate and the bulk supporting block tray are installed; the oil cylinder is connected with the bulk supporting block tray; during unloading, hydraulic oil in the oil cylinder flows back to the hydraulic center, the piston of the oil cylinder descends to drive the bulk solid supporting block tray to move downwards, the bulk solid supporting block rotates outwards to be opened, and after the mass block loses support, the bulk solid supporting block is pushed by high-pressure water in the high-pressure experiment bin to be rapidly and downwards sprayed out, and unloading is completed. According to the invention, no consumables and explosion impact are realized, the integrity and coherence are good, and compared with the existing rapid unloading device, the rapid unloading device has stronger technical advantages and reliability.

This invention relates to a control device and method for the planting section of a transplanter, comprising a newly added independent oil tank and a first hydraulic pump. The power of the first hydraulic pump is provided by the PTO output shaft. Hydraulic oil in the oil tank enters the oil cylinder through a single-stable valve and a contour valve, and the oil in the oil cylinder flows back to the oil tank through a return oil line. In this way, the planting section can be adjusted in height by floating with the ground or by using a handle during operation. The tractor's rotary tillage depth is adjusted by regulating the oil flow of the tractor itself. In summary, the hydraulic circuit of the tractor and the hydraulic circuit of the planting section are two separate systems that are not connected in series. Therefore, their actions will not be interfered with by the load, and the adjustment of the tractor's rotary tillage depth is realized during the operation of the planting section.

Disclosed herein is an electric brake system including a brake including a cylinder and a piston which is provided in the cylinder to move forward or backward and is moved by hydraulic pressure so that a brake pad presses a brake disc, an electric stability control (ESC) actuator configured to generate and supply hydraulic pressure to the cylinder to brake a wheel of a vehicle, an electric parking brake (EPB) actuator configured to move the piston by a motor, and a controller configured to control the EPB actuator and the ESC actuator, wherein the controller estimates a flux in the cylinder and estimates pressure in the cylinder based on whether an EPB is applied through driving of the EPB actuator and the estimated flux in the cylinder.

The invention discloses an energy-saving transformed hydraulic system which comprises a lifting cylinder, an original lifting valve stand, an energy-saving valve stand, a pipeline switching module and an energy storage module. The lifting cylinder is used for driving the stepping beam to lift; the original lifting valve stand is used for executing traditional control on the walking beam; the energy-saving valve stand is connected with a rod cavity of the lifting cylinder through the pipeline switching module, and the energy storage module is connected with a rodless cavity of the lifting cylinder through the pipeline switching module. The pipeline switching module is used for switching traditional control and energy-saving control on the walking beam; the energy storage module is suitable for supplying oil to a rodless cavity of the lifting cylinder when the walking beam ascends; the energy-saving valve stand is suitable for supplying oil to the rod cavity of the lifting cylinder when the walking beam descends, so that oil in the rodless cavity of the lifting cylinder flows back to the energy storage module. The system has the beneficial effects that energy-saving transformation is carried out on the basis that an original lifting valve stand is reserved, and new and old systems can be switched through one key by controlling the pipeline switching module.

The present application relates to the technical field of automation production, and discloses a needle cylinder assembling device, wherein the first vibrating distributing component is arranged on the rack, the cover body flows out from the discharge port of the first vibrating distributing component; the second vibrating distributing component is arranged on the rack, the piston flows out from the discharge port of the second vibrating distributing component; the third vibrating distributing component is arranged on the rack, the material cylinder flows out from the discharge port of the third vibrating distributing component; the rotating disc component is arranged on the rack, and the rotating disc component rotates through the cover body receiving station, the piston receiving station, the material cylinder receiving station and the cylinder cover assembling station; the mechanical hand component is arranged on the rack, and the mechanical hand component transfers the cover body, the piston and the material cylinder from the first vibrating distributing component, the second vibrating distributing component and the third vibrating distributing component to the rotating disc component respectively and completes the assembling of the cover body, the piston and the material cylinder. The above arrangement improves the assembling efficiency, reduces the probability of needle cylinder leakage and improves the user experience.

The invention discloses a dust falling device for mining of a strip mine and a use method, the dust falling device not only can realize centralized control of a plurality of spraying assemblies, but also can automatically rotate along with a fan blade assembly under the driving of high-pressure water, so that the automatic rotation driving of the rotating spraying head assembly is realized, and the dust falling efficiency is improved. Special power drive is not needed, driving equipment is simplified, meanwhile, automatic rotation of all the spray head assemblies can be guaranteed, the spraying area is effectively increased, meanwhile, part of high-pressure water flows to the spraying side pipe and is sprayed out in a mist mode through the side spray head assemblies, and meanwhile the spraying efficiency is improved. The other part of water in the power cylinder flows into the rotating pipe through the inner pipe hole, the rotating pipe is driven by the fan blade assembly to rotate, meanwhile, water mist is sprayed out through the rotating spray head assembly at the upper end of the rotating pipe, all-directional dust removal of an area to be subjected to dust removal is achieved, and the dust removal effect and the dust removal capacity are effectively improved.

Embodiments of the present application provide a control method and device for a lifting mechanism, a processor and a readable storage medium, belonging to the technical field of engineering equipment. The method comprises: acquiring a system pressure value of a hydraulic system and a first inclination angle value of a scissor linkage, wherein the system pressure value comprises an inlet pressure value of a telescopic cylinder and a front end pressure value of an electromagnetic proportional valve; determining a target pressure value based on the first inclination angle value and a preset lifting speed; determining a cylinder flow value of the telescopic cylinder based on the target pressure value and the system pressure value; determining a target rotating speed of a driving motor based on the cylinder flow value; and controlling the driving motor to operate at the target rotating speed until the system operates stably. The cylinder flow value calculated based on the system pressure value and the first inclination angle value acquired in real time is compared to further determine the target rotating speed of the driving motor, realize real-time control of the lifting speed of a working platform, and improve the operation stability and use safety of the working platform.

The utility model relates to the technical field of water meter production, in particular to a surface treatment jig for a welded junction of a water meter. Comprising a water meter placement table, a bearing assembly is arranged in the middle of the upper side wall of the water meter placement table, and a water meter shell is placed on the upper side of the bearing assembly with the axis parallel to the upper side wall of the water meter placement table. According to the utility model, an operator firstly places a water meter shell on the upper side of the bearing assembly, and then inserts and fixes the L-shaped frame in the positioning sleeve, so that the metal brush head is in contact with a water meter welded junction, and electrolyte in the liquid storage cylinder flows to the water meter welded junction through the through hole, the movable cylinder and the metal brush head under the action of gravity; in the process that an operator rotates the shell of the water meter in a reciprocating mode, the metal brush head can completely smear the electrolyte on the circumferential outer wall of the welded junction of the water meter, the current can conduct comprehensive electrolytic polishing on the welded junction of the water meter, and the operator does not need to frequently use a welded junction treatment handle to dip the electrolyte and smear the electrolyte on the surface of the welded junction of the water meter.

The invention provides a method for improving the environmental adaptability of a highly-strengthened diesel engine based on an electronic unit pump. The electronic unit pump comprises a control valve rod and a limiting check block, and a buffering ring groove is formed in the end face, in contact fit with the limiting check block, of the control valve rod; the buffering ring groove surrounds the periphery of the sealing part to form an annular concave structure, and the annular concave structure is used for increasing hydraulic damping in the closing process of the control valve rod, slowing down the seating speed of the valve rod and assisting in reducing the oil drainage rate of a high-pressure oil way. A second-section stable pulse width current is introduced into the tail end of a traditional three-section control current, electromagnetic force is temporarily recovered after main injection is finished, a control valve rod is subjected to upward electromagnetic tension compensation in the falling process, and therefore the falling acceleration of the control valve rod is reduced, and the problem that high-pressure gas in a cylinder flows backwards due to sudden oil pressure drop is fundamentally solved.

The utility model discloses a connecting and sealing device for a pipeline and an inspection well, which relates to the technical field of pipeline sealing and comprises a connecting pipe, a pipeline sealing unit and a vertical well waterproof unit. A plurality of sealing measures are taken, and the sealing component can be compressed and deformed under the action of external force, so that the sealing component is more tightly attached to the end face of the component, and the sealing effect can be effectively achieved; after the inner rubber ring is extruded by the flange, the protruding part of the inner rubber ring can be tightly attached to the joint of the connecting flange and the connecting pipe, so that the sealing effect between the flange plates is achieved, and meanwhile the sealing performance between the connecting flange and the connecting pipe is improved. A reliable vertical shaft waterproof unit is further arranged, water permeating into the vertical shaft from a wellhead can flow into a groove between the pipeline and the inner barrel, and the situation that the permeating water flows into the pipeline along an access hole of the inner barrel is effectively avoided; and the water in the groove is discharged outwards through the drainage channel, so that the water in the annular groove is prevented from being accumulated.

The utility model relates to vehicle hydraulic transmission and control technical field, concretely relates to the control drive system of fuzzy output signal, be applied to the differentiation control of front and rear wheel drive motor in the process of large -scale vehicle turning, the system includes pump control system, flow pressure control system, wheel system and oil return control system, the pump control system includes main pump, oil pump control cylinder, flow pressure control valve and throttle valve, the swash plate on main pump links with the piston rod on oil pump control cylinder, and oil pump control cylinder has A mouth and B mouth, flow pressure control valve has C mouth, D mouth, P mouth and the Z mouth and spring end K mouth located on both sides, the utility model discloses, through load response feedback oil circuit (LS) feedback mechanism, realize the adaptive flow distribution of front and rear wheel drive motor, solve the problem that the front and rear wheel speed does not match in the process of large -scale vehicle turning, and the steering accuracy, stability and safety are improved.

The utility model relates to bridge detection technical field, and disclose a kind of detection device for bridge water seepage, including base, and the both ends of base are hingedly installed with support frame.The detection device for bridge water seepage, through the cooperation setting of pivot, sealing cover, vertical board, driving motor, threaded rod, moving block, connecting rod, fixing frame, liquid storage cylinder, hose, sliding slot, gear, spring, catch plate and pressing plate, the angle of sealing cover is adjusted according to the road surface inclination of measuring point when using, and then driving motor drives threaded rod to rotate, at this time threaded rod will drive moving block to move downward along vertical board inside, in turn drive connecting rod to push support frame downward and make sealing cover and bridge deck adhere, then the water in liquid storage cylinder flows into sealing cover through hose, then the bridge water seepage performance is known according to the liquid height in liquid storage cylinder, to play the role of detecting on the inclined road surface of bridge, and effectively improve the practicality of device.

The utility model provides a vertical grinder which comprises a grinding cylinder, a driving motor, a driving shaft, an upper-stage separation rotor, a lower-stage grinding rotor and a separator assembly, and grinding media are mainly distributed in the grinding cylinder in a lower concentrated and upper dispersed mode due to gravity. Due to the fact that the feeding port is formed below the grinding cylinder, after entering the grinding cylinder, materials firstly pass through the lower portion where the grinding media are densely stacked, are ground in a concentrated mode on the lower portion of the grinding cylinder and are continuously fed through the feeding pump, and the materials, close to the feeding port, of the grinding cylinder flow towards the upper portion of the grinding cylinder. And the materials enter the next process through the first discharging channel, the second discharging channel and the third discharging channel. According to the structure of feeding from the bottom of the grinding cylinder and discharging from the axis, the grinding efficiency of the equipment is greatly improved, and the phenomenon that materials enter from the upper part of the grinding cylinder and grinding media are accumulated at the lower part of the grinding cylinder, so that the materials are not sufficiently ground is avoided.

The utility model relates to a steam turbine system which comprises a first high-pressure cylinder and a second high-pressure cylinder, each high-pressure cylinder communicates with a boiler, and the steam bearing load capacity of the first high-pressure cylinder is larger than that of the second high-pressure cylinder; the at least one medium-pressure cylinder is communicated with the boiler; at least one pair of low-pressure cylinders, wherein each pair of low-pressure cylinders is communicated with one medium-pressure cylinder; under the condition that the main steam flow of the steam turbine system is larger than a first preset main steam flow threshold value, main steam generated by the boiler flows to the first high-pressure cylinder till the first high-pressure cylinder is filled with the main steam, the remaining main steam flows to the second high-pressure cylinder, and reheat steam flows to at least one intermediate-pressure cylinder till the second high-pressure cylinder is filled with the reheat steam; and secondary reheat steam generated in each medium-pressure cylinder flows to the pair of low-pressure cylinders communicated with the medium-pressure cylinder. By means of the method, the steam turbine can efficiently conduct steam treatment.

The utility model provides a double-layer cyclone gas-liquid separator, which relates to the technical field of separators and comprises an ammonia distillation tower body, a low-cover-cylinder flow divider is arranged at the top end in the ammonia distillation tower body, a double-layer cyclone separation device is arranged in the low-cover-cylinder flow divider, and a circular blind plate is arranged at the bottom of the double-layer cyclone separation device. A rotational flow plate cover cylinder is arranged on the outer side of the circular blind plate, a rotational flow plate space is arranged on the inner side of the double-layer rotational flow separation device, a downcomer is arranged at the bottom of the rotational flow plate space, a collecting disc is arranged at the bottom end in the ammonia still body, liquid blocking covers are arranged on the two sides of the rotational flow plate space, a water outlet is formed in one side of the ammonia still body, and the double-layer rotational flow plate separation device is arranged in the ammonia still body. The purpose of eliminating or reducing liquid drops causing corrosion or blockage to equipment is achieved.

The application provides a special vehicle electric drive throttling composite control system and method, which comprises a three-position six-way throttling reversing valve, a throttling area, a throttling back oil oil channel and an inlet back oil oil channel are included in the reversing valve core; when the reversing valve core is in the front half area of the reversing position, the oil enters the throttling area of the reversing valve core from the P port of the three-position six-way throttling reversing valve, and the oil in the rod cavity of the oil cylinder flows back to the oil tank through the throttling back oil oil channel; when the reversing valve core is in the rear half area of the reversing position, the oil enters the inlet back oil oil channel of the reversing valve core from the P port of the three-position six-way throttling reversing valve; the valve core displacement sensor is used for monitoring the displacement signal of the reversing valve core, and is connected with the reversing valve core of the three-position six-way throttling reversing valve; the pressure sensor is used for monitoring the outlet pressure of the quantitative pump; the variable speed motor and the controller. The speed control system combining the electric drive variable speed with the valve control throttling variable speed guarantees the accurate control of the system at low speed and the energy saving effect of the system at high speed.

The contrast agent preparation device convenient to operate comprises a liquid storage cylinder, a motor and a liquid conveying pipe, the upper surface of the liquid storage cylinder is open, the motor is installed at the opening position of the upper surface of the liquid storage cylinder, and a shaft rod is vertically arranged in the middle of the interior of the liquid storage cylinder; the upper end of the shaft rod is mounted on a driving shaft of the motor, the lower end of the shaft rod is movably mounted on the inner bottom surface of the liquid storage cylinder, and a plurality of stirring rods are arranged on the surface of the shaft rod. According to the utility model, one end, far away from the liquid outlet tube, of the infusion tube is connected with the indwelling needle in the vein of a patient, so that a mixture of normal saline, air and blood of the patient in the liquid storage cylinder flows into the vein of the patient through the infusion tube; only one person is needed in the whole operation process, preparation is easy, manpower is saved, the quality of microbubbles prepared every time is the same, and standardized operation can be achieved. And the second mounting plate can be detached from the first mounting plate, so that the inner wall of the liquid storage cylinder is convenient to clean.

The guide structure comprises a guide cylinder arranged on the inner wall of the combustion chamber, the guide cylinder is coaxial with a flame tube, a head end cylinder opening of the guide cylinder is connected with the inner wall face of the combustion chamber, and the connecting position is located between a middle main combustion hole and a first-position group inner mixing hole. The tail end of the guide cylinder is suspended and extends to the front of the mixing holes in the first group, and an annular isolation area is formed between the inner wall of the guide cylinder and the inner wall surface of the combustion chamber; low-temperature airflow in the guide cylinder is guided by the inner wall surface of the guide cylinder to flow close to the inner wall surface of the combustion chamber; wall-attached high-temperature airflow in the middle of the combustion chamber of the guide structure flows to the middle of the combustion chamber to be separated and is mixed and cooled in the low-temperature combustion chamber, low-temperature jet airflow cools the guide cylinder, and longitudinal development of airflow in a mixing hole is restrained by the guide cylinder, so that the airflow flows close to the inner side wall surface; high-temperature distribution near the inner wall of the combustion chamber outlet is reduced.

The application is suitable for the field of pressure pipeline pressure stabilization, and provides a multi-control and multi-adjustment bidirectional pressure stabilization tower, which comprises a tower body and a tower cylinder which are connected and communicated, a multi-hole tower seat is installed in the tower body, a sealing pressure plate and a one-way plate are sequentially arranged at the lower part of the multi-hole tower seat; a piston is installed at the inner side of the tower cylinder, a diaphragm is press-fitted on the upper part of the piston through a diaphragm pressure plate, the area of the diaphragm and the upper part of the piston is larger than the area of the lower part of the piston, and the space of the lower part of the piston is communicated with a pipeline; a water return assembly is arranged at the lower side of the one-way plate, and the water return assembly is used for opening the one-way plate downward when the pipeline appears negative pressure or the pressure is lower than that of the tower cylinder, so that the water in the tower cylinder flows into the pipeline; a support adjusting assembly is further installed on the tower cylinder, and the support adjusting assembly is used for controlling and adjusting the pressure of the piston. The bidirectional pressure regulating tower which must be arranged according to the water level line height is greatly reduced in height by arranging the flow guide piston in the tower body, the engineering cost is saved, and the purpose of protecting the safety of the pipeline system is achieved.

A two-stage gas generator for ejection includes a cylinder, a gas generating assembly one, and a gas generating assembly two. The gas generating assembly one includes a first igniter, a first bursting disc, and a throttle valve. The gas generating assembly two includes a second igniter and a second bursting disc. The first igniter includes an electric detonator one for bursting the first bursting disc to make the high-pressure inert gas in the cylinder flow through a third gas guide hole on the throttle valve, the first bursting disc position, a first gas guide hole on the first igniter, and into a working chamber in the launching cylinder. The second igniter includes an electric detonator two for bursting the second bursting disc to cooperate with the first igniter to make the remaining high-pressure inert gas in the cylinder flow through the second bursting disc position and a second gas guide hole on the second igniter, and into the working chamber in the launching cylinder. The present application can meet the initial low overload requirement in the take-off stage of the ejection object and the speed requirement out of the cylinder in the middle and later stages, has a simple structure and light weight, produces clean propelling gas without residues, and does not expose the launching point.