156results about How to "High traffic" patented technology

The invention discloses a fuel cell bipolar plate structure with a heat dissipation fin array, and particularly relates to the field of cell bipolar plates, the fuel cell bipolar plate structure comprises a cathode plate, an anode plate is arranged on one side of the cathode plate, a membrane electrode is arranged between the cathode plate and the anode plate, an air gas cavity is arranged on the surface of one side, close to the membrane electrode, of the cathode plate, and the heat dissipation fin array is arranged in the air gas cavity. An air flow channel is formed in the inner wall of the air gas cavity, a hydrogen gas cavity is formed in the inner wall of one side of the anode plate, a hydrogen flow channel is formed in the inner wall of the hydrogen gas cavity, a cooling water flow channel is formed between the cathode plate and the anode plate, and a reinforced heat dissipation mechanism is arranged in the cooling water flow channel; the flow channel can be shortened through the flow dividing air flow channel, the path of gas from the inlet to the outlet is more average, the multi-gradient auxiliary enhanced heat dissipation effect is achieved through the enhanced heat dissipation mechanism on the inner wall of the cooling water flow channel, the enhanced heat dissipation effect can be assisted, and therefore huge heat generated by electrochemical reaction of the cathode and the anode can be taken away.

A vehicle heat pump system capable of improving cooling and heating performance by applying a gas injection device selectively operated in a vehicle interior air conditioning mode to increase the flow rate of refrigerant. The heat pump system uses a single heat exchanger configured to exchange heat between at least two refrigerants having different temperatures and states with each other for the entire system and the gas injection device, so that the total number of components can be reduced, and manufacturing costs and weight can also be reduced.

This invention provides a spiral drilling mining robot and an adaptive cutting control method, belonging to the field of mining equipment technology. The technical solution is as follows: a spiral drilling mining robot includes a tracked walking mechanism, a drill rod unit, a power system, a support device, and a sliding platform device; this invention also provides an adaptive cutting control method, including the following steps: first, borehole preparation and gas detection; second, adaptive borehole mining operation; third, drilling completion and equipment reset; the beneficial effects of this invention are: this invention uses a gas concentration sensor on the drill bit to detect the gas concentration in real time and automatically adjusts the nitrogen injection volume, effectively controlling the gas concentration. Simultaneously, the equipment can dynamically adjust the drill bit rotation speed and propulsion speed according to changes in drill bit load and rock hardness, improving tunneling efficiency; furthermore, the tunneling equipment features a modular design, enabling the equipment to flexibly cope with drilling requirements at various depths.

The present application provides a kind of engagement mechanism, working device and working machine, including engagement, supply unit, micro channel unit and give unit, engagement is equipped with engagement surface, for the temperature control electronic component of pasting, supply unit is equipped with the main flow channel of access, shunt and multiple branch flow channel in engagement, to flow body of the temperature of pre-set even shunt to multiple branch flow channel, micro channel unit is equipped with multiple micro channel in engagement, and the fluid of the temperature of pre-set can be flowed into multiple branch flow channel, and the intensive multi-zone micro area heat exchange is made with engagement surface to even temperature control electronic component, give unit is equipped with the main flow channel of access, flow channel and multiple branch flow channel in engagement, and the fluid of multiple micro channel input has been heat exchanged and flow output.

The utility model discloses a special-shaped filler strip in the technical field of heat exchanger equipment, which comprises a strip body, the strip body mainly comprises a bottom strip and a side strip, the side strip is connected to one side of the top of the bottom strip, a plurality of grooves are formed in the top of the side strip along the length direction at equal intervals, and the grooves are inclined. The filler strip adopts the L-shaped special-shaped design, the grooves are formed in the side strips at equal intervals, it is ensured that the intervals of all layers of pipes are consistent, and the grooves are inclined, so that when the filler strip is used in a winding type heat exchanger, the convection quantity and the flow speed of media or gas can be increased, the heat exchange effect of equipment can be improved, meanwhile, the pipes can be better fixed, and the service life of the equipment is prolonged. Overall vibration and noise of pipes and equipment are reduced, stability is improved, the flow and the flow speed of liquid or gas in the heat exchanger are ensured, and the service life of the equipment is prolonged.

This invention discloses a method for evaluating the multi-dimensional coupling aerodynamic performance of a modal selector valve and an engine, belonging to the field of aero-engines. The steps are as follows: establishing a three-dimensional model of the modal selector valve; simulating the model to obtain its flow performance; establishing a computational model of the modal selector valve and calculating the total pressure after the valve; integrating a high-fidelity characteristic calculation model of the component with a zero-dimensional model of the entire engine; inputting the engine's design point performance parameters and performing design point calculations; given the engine control law and the engine's non-design point operating conditions, performing calculations; determining the convergence of the computational model; obtaining the engine characteristic diagram and aerodynamic performance under arbitrary operating conditions, thus obtaining the aerodynamic performance results considering the overall coupling effect of the modal selector valve and the engine. This invention solves the problems in existing technologies where the calculation accuracy of the overall performance calculation code for variable cycle engines cannot meet the design requirements of variable cycle engines, and the coupling of various engine components is poor.

The application relates to the technical field of powder production and processing equipment, in particular to a flow guide device for airflow mill pulverization and a pulverizer adopting the flow guide device, wherein the flow guide device for airflow mill pulverization comprises a device body, a flow guide area, a collection area and a drainage area are formed in the device body, and the collection area and the drainage area are distributed around the flow guide area; when the device body is matched with a pulverization cavity and the pulverization cavity is in a working state, airflow sprayed from a nozzle flows to the lower part of the collision area after collision in the middle of a pulverization area and then flows into the flow guide area and the drainage area in sequence; the collection area collects coarse particles sinking downwards, the collection area is formed with an opening, coarse particles in the collection area can flow out through the opening, the flowed-out coarse particles can flow into the drainage area together with airflow and flow out of the drainage area; the flowing direction of airflow flowing out of the drainage area is towards the top of the pulverization cavity. The flow guide device for airflow mill pulverization can improve powder preparation efficiency and improve the vortex state at the bottom of the pulverization cavity.

The application relates to a magnetic control urination system and a magnetic control catheter thereof, the magnetic control catheter comprising a catheter main body and a magnetic control valve, the magnetic control valve comprising a sealing piece and a first magnetic bead, the sealing piece being in sealing connection with the proximal end of the catheter main body, the sealing piece being provided with a fluid passage, the first magnetic bead being arranged on one side of the sealing piece or in the interior of the sealing piece, the first magnetic bead being used for plugging or conducting the fluid passage under the action of a magnetic field, the sealing piece being provided with a limiting portion configured to limit the first magnetic bead from moving out of the distal end of the sealing piece. The magnetic control urination system and the magnetic control catheter thereof have the advantages that the first magnetic bead cannot move out of the distal end of the sealing piece under the limitation of the limiting portion, and therefore cannot enter the distal end of the catheter main body along the catheter main body, so that when the inner diameter of the catheter main body is configured, there is no concern that the first magnetic bead enters the distal end of the catheter main body, and then the catheter main body can be selected to have a relatively large inner diameter, so that the flow of the catheter main body is improved, the urination rate is improved, and the urination time is shortened.

The application relates to the technical field of water purification equipment, and relates to a water treatment equipment which comprises a water channel structure, a filter core assembly, a temperature adjusting device, a heat exchange water channel and a liquid channel control device; the temperature adjusting device comprises multiple heat exchange channels; the liquid channel control device is used for controlling the heat exchange water in the temperature adjusting device to be transferred into the transfer channel and then discharged from the wastewater outlet. The water treatment equipment of the embodiment realizes multi-path heat exchange of the heat exchange water by arranging the temperature adjusting device comprising multiple heat exchange channels.

The application relates to the technical field of sealing joints, in particular to a sealing joint for a high-pressure hydrogen gas conveying pipeline, which comprises a male connector seat, a female connector seat and a valve core group, the joint ends of the male connector seat and the female connector seat are respectively provided with lock plates and flange joint plates, the outer periphery of the flange joint plate is provided with wedge locking blocks and screw rods, the opposite surfaces of the lock plate and the flange joint plate are respectively provided with first sealing ring groups and second sealing ring groups, the surface of the lock plate is provided with a sealing gasket, the valve core group comprises a core shaft, a spring, a valve sleeve and a guide head, and a gradually tapered section, a throat section and a gradually expanded section flow channel structure are formed between the valve sleeve and a flow channel. The male connector seat and the female connector seat are quickly locked and connected through the wedge locking blocks, a composite sealing structure is formed through labyrinth sealing and elastic sealing, the static pressure of a joint jointing area is reduced through the Venturi effect, the hydrogen gas leakage driving force is reduced, a multilayer leakage prevention mechanism is formed, and the sealing joint has the advantages of good sealing performance, high connection stability and suitability for high-pressure hydrogen gas conveying working conditions.

This invention provides a CO2 dynamic dissolution testing device. The device includes: a core holder, a vacuum system, a confining pressure system, a back pressure system, a fluid supply system, a nuclear magnetic resonance (NMR) testing system, a sensor system, and a temperature control system. The fluid supply system includes a CO2 gas supply component, a formation water supply component, a saturated carbon dioxide formation water supply component, and a helium supply component. The helium supply component includes a helium cylinder and a standard gas chamber, with the gas outlet of the helium cylinder connected to the inlet of the standard gas chamber. The CO2 gas supply component, formation water supply component, saturated carbon dioxide formation water supply component, and standard gas chamber are each connected to the fluid inlet of the core holder. The sensor system includes a pressure sensor group, comprising a pressure sensor for acquiring the pressure at the fluid inlet of the core holder, a pressure sensor for acquiring the pressure at the fluid outlet of the core holder, and a pressure sensor for acquiring the pressure of the standard gas chamber.

The present application relates to a kind of sandstone aggregate production powder and washing system;It relates to sandstone aggregate production technical field, including grinding mechanism, the import end of the grinding mechanism is fixedly connected with water pump assembly, outlet end is fixedly connected with cyclone centrifugal mechanism;Cyclone centrifugal mechanism is fixedly connected with water pump two, and the lower end of the end of cyclone centrifugal mechanism away from grinding mechanism is equipped with screening mechanism;Screening mechanism is equipped with water tank mechanism below;Multiple grinding rollers follow the quick rotation of plum blossom seat, multiple grinding rollers cooperate grinding ring, can be polished to the sandstone aggregate between grinding roller and grinding ring, remove hard impurities on sandstone aggregate by friction, cooperate with the scouring of water flow to sandstone aggregate, can remove all light and hard impurities on the surface of sandstone aggregate, improve the effect of sandstone aggregate cleaning;After sandstone aggregate cleaning work is finished, open sealing door can clean the impurities in volute feed bin one and cylinder, and it is also convenient to repair and replace grinding roller and bevel cutter through sealing door.

The application relates to a non-conservative intelligent automobile decision planning integrated method in a complex heterogeneous environment, which comprises the following steps: constructing a social interaction knowledge learning model offline and training; acquiring surrounding traffic participant state data and intelligent automobile state data in real time online, and obtaining an environment state after splicing processing; taking the environment state as the input of the trained social interaction knowledge learning model to obtain the predicted trajectories of all traffic participants including the intelligent automobile; updating the environment state based on the predicted trajectories; re-inputting the updated environment state into the social interaction knowledge learning model to iteratively complete intelligent automobile trajectory decision planning, wherein the planning trajectory of the intelligent automobile is the splicing result of the first point of the predicted trajectory obtained in each iteration. Compared with the prior art, the application has the advantages of considering the influence of social interaction prediction on the trajectory, decision planning integration and the like.

This application provides a roller brush assembly, a floor brush assembly, and a cleaning device, relating to the field of cleaning technology. The roller brush assembly includes a roller with a first flow equalization chamber extending axially along its inner wall. A flow distribution channel is provided within the first flow equalization chamber. The roller has an inlet hole and multiple outlet holes, both communicating with the flow distribution channel. The inlet hole is located at one end near the axial direction of the first flow equalization chamber. The flow distribution channel includes multiple branching points, each branching point including a connected inlet channel and two outlet channels. Along the axial direction of the roller, the two outlet channels are located on opposite sides of the inlet channel. At least a portion of the branching points has a water-dividing section, the inlet of which is larger than the inlet of the outlet channel formed between the water-dividing section and the outlet channel away from the inlet hole. This roller brush assembly can achieve sufficient and uniform wetting of the cleaning parts, improving the cleaning effect of the roller brush assembly.

A compression type atomizer comprises a shell, a compression pump assembly, a silencing box and a heat dissipation exhaust fan, a filtering air inlet is connected with an inlet of the compression pump assembly through a pipeline via the silencing box, and an outlet of the compression pump assembly is connected with an air outlet through a pipeline; the bottom of the compression pump assembly is connected with the inner bottom surface of the shell through a buffer pad, and the top of the compression pump assembly is in compression fit with the inner top surface of the shell through a damping layer; the left end and the right end of the shell are each provided with a heat dissipation air inlet so that the heat dissipation air inlets can be aligned with the two ends of the compression pump assembly. The heat dissipation exhaust fan is arranged on the front side or the rear side of the compression pump assembly, a heat dissipation air outlet is formed in the position, opposite to the heat dissipation exhaust fan, of the shell, and therefore a heat dissipation structure with air inlet at the two ends and air outlet at the side is formed.

The utility model discloses an outlet gas temperature regulation and control device of a sulfur burning furnace. The outlet gas temperature regulation and control device comprises a graded regulation and control valve body, a multi-point temperature measurement assembly and a uniform flow temperature control cavity, the graded regulation and control valve body, the multi-point temperature measurement assembly and the uniform flow temperature control cavity are connected in series step by step and are mounted on a furnace gas main pipe at the rear end of the sulfur burning furnace; through the synergistic effect of graded adjustment, multi-point monitoring and forced flow uniformizing, the problems that a traditional device is large in temperature fluctuation and uneven in mixing are solved, the regulation and control precision is improved, and the energy consumption and the maintenance cost of the sulfur acid making process are remarkably reduced.

The utility model discloses a kind of eccentric swing type transmission structures, including shell, power input shaft, inclined boss, connecting rod, rotating shaft, power output piston, the inclined boss is fixed in shell, power input shaft passes through inclined boss, one end is connected with rotating shaft, the one end of the connecting rod is connected with the one end of rotating shaft, the other end is connected with power output piston;Power input shaft drives rotating shaft to rotate with inclined boss surface, rotating shaft rotates with inclined boss surface, its end portion changes with rotating up and down position, and then power output piston is moved up and down by connecting rod, power output piston is provided with power output shaft on it.The utility model also discloses a spraying machine.The utility model uses eccentric swing type transmission structure, solve the existing structure and plunger pump associated eccentric shaft stress as cantilever, the problem of bad stress, ensure accuracy, with the advantages of high output pressure, large flow, long service life, manufacturing and maintenance are convenient.

The application discloses a piezoelectric pump, which comprises a first-stage piezoelectric pump unit, a second-stage piezoelectric pump unit, a third-stage piezoelectric pump unit and a fourth-stage piezoelectric pump unit, and a slope groove is arranged at each of a first output flow channel, a second output flow channel, a third output flow channel and a fourth output flow channel; the slope groove comprises a slope surface guide part and is used for reducing the effective volume of each output flow channel and providing a guide thrust for fluid. The piezoelectric pump has a four-stage series structure and a slope groove design, and the output flow and lift are effectively improved. The piezoelectric effect of piezoelectric ceramics is utilized to drive the expansion and contraction vibration of a metal sheet, and the directional delivery of fluid is realized in cooperation with a one-way valve; the slope groove reduces the volume of the outlet flow channel, guides and improves the water flow speed, further increases the liquid pressure and strengthens the lift effect; the piezoelectric pump has the advantages of compact structure, small size and low power consumption, guarantees the efficient and stable heat dissipation in a high-load environment and has a wide application prospect.

This invention discloses a water purification system and its control method for producing sparkling water, belonging to the field of sparkling water production and processing technology, and designed to solve the problem of low flow rate in existing sparkling water production. The water purification system for producing sparkling water disclosed in this invention includes: an inlet pipe equipped with a pressure reducing valve; a sparkling water pipe connected to the inlet pipe; a purified water pipe connected to the inlet pipe, equipped with an RO membrane filter; a concentrated water pipe connected to the concentrated water outlet of the RO membrane filter; and a return pipe, one end of which is connected to the inlet pipe and located outside the outlet of the pressure reducing valve, and the other end of which is connected to the concentrated water pipe. The connection between the return pipe and the concentrated water pipe is connected to an air intake assembly, which is configured to supply air to the concentrated water pipe. The water purification system and its control method for producing sparkling water disclosed in this invention produce a large flow rate of sparkling water, with a high and uniform bubble content, and stable sparkling water production.

The utility model discloses an oil mist purification device for a CNC (Computer Numerical Control) machining center, which relates to the technical field of CNC machines and comprises a purification chamber, a sliding plate, a mist inlet pipe, a cover plate, an oil mist purification mechanism, a fixed clamping plate, an HEPA (High Efficiency Particulate Air) filter screen, an activated carbon plate, a turbulent flow mechanism, a transverse reciprocating mechanism and a fan. Oil mist enters the purification chamber through the mist inlet pipe, oil drops are preliminarily separated through the oil mist purification mechanism, then airflow is disturbed through the flow disturbing mechanism, the purification efficiency is improved, fine particles are further filtered and peculiar smells are further adsorbed through the HEPA filter screen and the activated carbon plate, air inlet is optimized through the transverse reciprocating mechanism, and purified gas is exhausted through power provided by the draught fan. The device adopts a multi-purification structure, combines automatic cleaning and optimized air inlet design, is high in purification efficiency and convenient to maintain, and meets the oil mist purification requirement of the CNC machining center.

The valve device comprises a valve body, a valve rod, a valve element and a throttling element, the throttling element, the valve element and at least part of the valve rod are all arranged in the valve body, the throttling element is provided with a first valve port wall, the valve body is provided with a second valve port wall, and the diameter of at least part of the first valve port wall is smaller than that of the second valve port wall; the valve rod comprises a rod part and a transmission part fixed to the rod part, the transmission part protrudes out of part of the periphery of the rod part in the radial direction of the valve rod, the rod part abuts against the valve element, and the transmission part and the throttling element are spaced or abut against each other; in the valve opening state of the valve device, the valve element and the first valve port wall are spaced, the throttling piece abuts against the second valve port wall, or the valve element and the first valve port wall are spaced, the throttling piece and the second valve port wall are spaced, and the refrigerant flow of the valve device meets the requirements for small flow and large flow.

The utility model provides a cooling device of a main transformer, which relates to the field of cooling equipment for the main transformer and comprises a transformer shell, the transformer shell is used for protecting a transformer core, and insulating oil and a cooling component are added in the transformer shell. Comprising cooling fins and a first fan which are used for cooling a transformer shell, a frame fixed to one side of the transformer shell, a coiled pipe, fins and a second fan which are used for cooling insulating oil, and a circulation assembly which comprises a circulation pump and a backflow pipe communicated with the transformer shell and the liquid inlet end of the circulation pump. According to the transformer temperature monitored by the thermocouple and the liquid level information monitored by the liquid level sensor through the PLC in the control assembly, the first electromagnetic valve, the second electromagnetic valve, the first fan, the second fan and the circulating pump are intelligently regulated and controlled through the relay and the frequency converter; therefore, operation parameters of the cooling device can be flexibly adjusted according to actual conditions, and the energy-saving effect is improved.

The invention relates to the technical field of washing equipment, particularly provides a spray head and washing equipment comprising the spray head, and aims to solve the problem that a treating agent of existing washing equipment is insufficiently dissolved. Therefore, the spray head comprises a shell and a filter screen assembly, a speed increasing channel, a mixing cavity and a clothes treating agent channel communicated with the mixing cavity are formed in the shell, a first gap is formed between the filter screen assembly and the mixing cavity, and water in the speed increasing channel enters the mixing cavity; negative pressure is generated in the mixing chamber, air is sucked in through the first gap, mixed liquid of water, air and the clothes treating agent is formed in the mixing chamber, the filter screen assembly can cut the mixed liquid into micro-foam to be sprayed out from the outlet, and the water, the air and the clothes treating agent are mixed into the mixed liquid through the mixing chamber. The clothes treating agent can be fully dissolved and mixed, then the mixed liquid is cut into micro-foam through the filter screen assembly to be sprayed out from the outlet, and therefore clothes can make full contact with the micro-foam, and the washing efficiency of the washing equipment is improved.

The utility model belongs to drainage structure technical field, concretely relates to a rain and pollution shunt, including drainage box, apron and filter pocket, drainage box sets up in the drainage ditch of drainage area, apron is inlayed in drainage box upside, filter pocket sets up in drainage box and with apron position corresponding match, still be equipped with adjusting mechanism in drainage box, through the setting of adjusting mechanism, in the drainage process, can through the drive partition pole and turn over, play the effect of the impurity of clean apron surface blockage, make it be pushed away from apron area or directly fall into filter pocket, can also improve the flow of drainage, and still can further compress the impurity in filter pocket through partition pole, improve storage capacity and reduce maintenance frequency, the setting of T type scraper pole can provide certain cleaning effect to partition pole when turning over.

The utility model relates to the technical field of angle valves, and provides an angle valve structure which comprises an outer shell, a ball head arranged in the outer shell and used for cutting off water flow, and a valve rod used for driving the ball head to rotate and rotationally connected with the outer shell. A containing cavity used for mounting a ball head is formed in the outer shell, a water inlet channel communicated with the containing cavity is formed in the lower portion or the side wall of the outer shell, and a mounting channel used for mounting a valve rod and communicated with the containing cavity is formed in the upper portion of the outer shell. A first limiting step is arranged on the inner side wall, close to the opening, of the mounting channel and used for limiting rotation of the valve rod, and a second limiting step is arranged on the valve rod; according to the angle valve structure, an existing valve element is replaced by the ball head, the valve rod is used for driving the ball head to rotate, flow of the angle valve structure can be greatly improved, meanwhile, the overall structure is simple, tedious assembly is not needed, assembly efficiency is improved, and cost can be reduced.

This invention provides a high-heat-dissipation battery component for new energy vehicles, belonging to the field of new energy vehicle heat dissipation battery technology. It includes a protective shell, inside which a cooling module is installed. The cooling module is used to cool the entire battery module. The battery module consists of a mounting box and battery cells. The battery cells are installed in mounting slots within the mounting box. A top plate is installed on the top of the battery module. The cooling module is connected to a serpentine cooling pipe, which has several adjusting components. Several adjusting components are arranged between adjacent sections of the serpentine cooling pipe. This invention, through the corresponding combination design of the cooling module, the serpentine cooling pipe and adjusting components, and the serpentine cooling pipe and adjusting components, achieves dual heat dissipation functions: overall cooling of the battery module and precise heat dissipation of individual battery cells, thus improving maintenance convenience.

The utility model discloses a flat sheet membrane assembly with a plug-in type cluster combination modular structure, which preferably comprises a hollow flat sheet membrane assembly body, an upper connecting piece, a lower connecting piece, a rubber division bar, a groove-shaped plate and an O-shaped sealing ring, a plurality of hollow flat diaphragm assemblies with the same specification are arranged in parallel at intervals along the thickness direction of the hollow flat diaphragm assemblies to form a group, the upper ends of the hollow flat diaphragm assemblies are inserted into holes of the upper connecting piece and are detachably connected in parallel through O-shaped sealing rings, and the lower ends of the hollow flat diaphragm assemblies are embedded into the lower connecting piece through rubber division bars to be detachably connected in parallel; groove-shaped plates are symmetrically embedded in the side faces between the upper connecting piece and the lower connecting piece, and detachable connection is formed, so that a plurality of hollow flat plate membrane assemblies are bundled into an integral combined structure. In a preferred second scheme, except for all the structures in the first scheme, the device further comprises a water collecting box connected to the upper connecting piece. The utility model provides two preferable schemes, so that the installation mode is more flexible, and the adaptability is stronger.

A data communication device for a vehicle, a center device, a data communication method, and a computer program are provided. As one mode of the present disclosure, an OTA client (7) wirelessly communicates with a center device (2) using a line of a communication carrier to acquire update data for writing to a plurality of ECUs (6). A communication information acquisition section (12) acquires information of the communication carrier and information of a region in which the center device (2) exists by wirelessly communicating. In a database (11), a plurality of communication clients corresponding to different distribution servers (23(1))-(23(3)) are stored. An OTA provider switching control section (10) selects an OTA client (7) corresponding to the communication carrier and the region from the database (11) based on the information acquired by the communication information acquisition section (12) and makes the OTA client (7) active, so that data communication with the distribution server (23) is enabled.

Systems and methods for non-invasive ventilation are provided. The systems may include a gas source that provides breathing gases to a patient through one or more of a primary flow path (PFP) and a flushing flow path (FFP). The system may include a control assembly configured to open and restrict gas flow through the PFP. When the PFP is open, a significant portion of the gas flows through the PFP while the remaining gas flows through the FFP. When the PFP is restricted, a significant portion of the gas flows through the FFP. Increased flow through the FFP may have a high velocity (especially relative to the flow through the PFP). Gas delivered through the FFP may be used to flush dead space. One or both flow paths may contribute to inspiratory positive airway pressure (IPAP), expiratory positive airway pressure (EPAP), and / or positive end expiratory pressure (PEEP).

The invention discloses a double-layer lifting type automatic loading and unloading assault boat transport vehicle, which relates to the technical field of emergency rescue transport equipment, and comprises a transport vehicle body, a lifting mechanism, a loading and unloading mechanism and an assault boat trailer frame, the lifting mechanism comprises an upper-layer plate, a lower-layer plate, a vertical plate, a first fixing block, a second fixing block, a rectangular frame, an extension rod, a matching block and a first electric-hydraulic push rod. According to the double-layer lifting type automatic loading and unloading assault boat transport vehicle, an assault boat body, an outboard engine and a trailer frame do not need to be disassembled, overall loading and unloading of the assault boat and the trailer frame can be achieved, the tedious disassembling and on-site assembling steps in a traditional transport mode are thoroughly omitted, large-scale external equipment such as a crane and a loading vehicle does not need to be relied on, and the transportation cost is reduced. The loading and unloading operation can be completed only through the device carried by the vehicle, equipment deployment can be rapidly carried out even in complex terrains or remote rescue sites, the rescue preparation time is remarkably shortened, and it is ensured that water area rescue work is put into the first time.