67results about How to "Guaranteed traffic" patented technology

The invention relates to a pavement structure damage detection method and device, a storage medium and electronic equipment. The method comprises the following steps: acquiring image detection data, radar detection data and sound wave detection data of a to-be-detected road surface; performing structural damage dual-channel identification on the image detection data, the radar detection data and the sound wave detection data to obtain initial structural damage detection data of the to-be-detected road surface; according to the preliminary structural damage detection data, determining physical model use guide information and physical model setting parameters corresponding to the to-be-detected road surface; and according to the physical model use guide information and the physical model setting parameters, performing mechanical analysis and fluctuation propagation analysis on the to-be-detected pavement by using each physical analysis model to obtain pavement structure damage detection data of the to-be-detected pavement. By adopting the method, the accuracy and reliability in pavement structure damage detection can be effectively improved.

The invention discloses a pushing support structure spanning a high-speed large-span steel box girder and a construction method, and relates to the technical field of steel box girder construction. Comprising an assembling support and a pushing support, and the assembling support and the pushing support are arranged at the bottom of a steel box girder; the assembling support comprises a concrete independent foundation, a temporary support is installed on the concrete independent foundation, and a profile steel distribution beam is installed on the top of the temporary support. The pushing support comprises a concrete enlarged foundation, multiple sets of stand columns are installed on the concrete enlarged foundation, and transverse distribution beams are installed at the tops of the stand columns. A longitudinal pushing platform is mounted at the top of the transverse distribution beam, and a walking type pushing piece is fixedly mounted on the longitudinal pushing platform; a plurality of groups of steel box girders are arranged, and at least six steel box girders are spliced in each group; the steel box girders are distributed in an arc shape; a guide beam is installed in the advancing direction of the steel box beam. According to the steel box girder pushing support structure system, highway passing is not affected, and the steel box girder pushing support structure system is economical, firm and stable.

The invention provides a motor end cover and an industrial motor, the motor end cover comprises an end cover body and a fan housing, the end cover body is provided with an inner side surface used for being assembled with a non-driving end of the motor and an outer side surface located at the outer side of the inner side surface, the outer side face comprises a fan blade assembly face located in the center area of the outer side face and an air guide ring face located in the edge area of the outer side face and arranged around the fan blade assembly face, the fan housing is arranged around the radial outer side of the end cover body, and an air outlet channel of the centrifugal fan blade is formed between the fan housing and the air guide ring face. A plurality of partition pieces are arranged between the fan housing and the air guide ring face and divide the air outlet channel into a plurality of cooling channels, and the cooling channels extend in the axial direction of the end cover body. According to the invention, air flow guide can be formed before the air outlet flow of the centrifugal fan blades enters the heat dissipation flow channels among the heat dissipation fins of the subsequent motor shell, so that the initial air speed value of the cooling air flow entering the heat dissipation flow channels of the motor shell is effectively increased, and the heat dissipation effect is enhanced.

The invention discloses a double-layer bridge for expressway extension and a construction method. The double-layer bridge comprises a bridge body arranged along an expressway, and the bridge body comprises a first beam body and a second beam body arranged below the first beam body; the first beam body comprises a plurality of first beam sections and a plurality of second beam sections which are fixedly connected, and the first beam sections are arranged side by side in the direction perpendicular to the width direction of the beam body; the second beam sections are arranged side by side in the width direction of the beam body. The second beam body comprises a plurality of sub-beams which are fixedly connected, the sub-beams are arranged side by side in the direction perpendicular to the width direction of the beam body, and the sub-beams are continuously arranged in the width direction of the beam body; a plurality of suspenders fixedly connected with the first beam body are arranged on the second beam body; the double-layer bridge further comprises a plurality of bridge piers used for fixing the bridge body. A navigable river channel corresponds to the lower portion of at least part of the area of the second beam body, and no pier is arranged in the area of the navigable river channel.

The utility model provides a drainage choke device suitable for a mine underground in-vein ore pass system, which comprises two symmetrically arranged skeletons, the skeletons adopt triangular prism structures, the top of any one skeleton is provided with an edge, the two skeletons are buckled and connected through the edges, and the two skeletons are connected with the triangular prism structures. A veneering body is arranged outside the two spliced frameworks, a square groove is formed in the edge of the bottom of the spliced frameworks, a liquid outlet hole is formed in the groove, a drainage pipe is arranged at the bottom of the liquid outlet hole, and the drainage pipe and the liquid outlet hole are communicated. The utility model not only prevents the fresh air from being pumped upwards and solves the problem of diversion of the fresh air in the stope, but also prevents the dirty air from descending and solves the problem of water flow caused by the encounter of the dirty air and the fresh air, and simultaneously solves the problems of centralized collection and drainage after the filling water around the original ore pass continuously seeps. And the problems of blockage of an in-vein ore pass and poor ventilation of a stope are solved.

The utility model discloses a tank body device for a steady flow compensator, which comprises a steady flow compensator tank body, the interior of the box body is divided into a municipal pressure cavity air pressure chamber, a municipal pressure cavity, a user pressure cavity air pressure chamber and a user pressure cavity through a municipal pressure cavity air pressure diaphragm, a user pressure cavity sealing head and a user pressure cavity air pressure diaphragm which are sequentially arranged in the longitudinal direction, a diaphragm supporting net is installed in the municipal pressure cavity, and a plurality of net holes penetrating through the two sides of the diaphragm supporting net are formed in the surface of the diaphragm supporting net. The municipal pressure cavity is outwards connected with a municipal water supply pipe network and a user main pipe interface; the municipal pressure cavity air pressure chamber, the municipal pressure cavity and the user pressure cavity air pressure chamber are respectively provided with corresponding air vents; and the municipal pressure cavity is communicated with the user pressure cavity. According to the four-cavity type steady-flow compensation water supply device, adjustment is carried out in a dual-compensation cooperation mode under different pressure conditions, it is ensured that enough water supply amount and stable and continuous water supply are provided, and the water use requirement of a user is met.

The invention relates to a production process of a duplex stainless steel seamless steel tube for a high-precision heat exchanger, the steel grade of the duplex stainless steel seamless steel tube is 022Cr23Ni5Mo3N, and the duplex stainless steel seamless steel tube comprises the following chemical components in percentage by weight: less than or equal to 0.03% of C, less than or equal to 1.00% of Si, less than or equal to 2.00% of Mn, 22.00-23.00% of Cr, 4.50-6.50% of Ni, 3.00-3.50% of Mo, less than or equal to 0.03% of S and less than or equal to 0.030% of P. And the typical specifications of the high-frequency frequency converter are phi 25.4 * 1.651, phi 31.75 * 1.651 and phi 38.1 * 2. The manufacturing method comprises the following steps: (1) manufacturing a pipe blank; (2) hot punching; (3) cold rolling; (4) heat treatment; (5) straightening; and (6) pickling. The room-temperature tensile strength of the finished pipe is larger than or equal to 655 MPa, the room-temperature yield strength is larger than or equal to 485 MPa, the percentage elongation after fracture is larger than or equal to 25%, the hardness HRC is smaller than or equal to 28, the structure is uniform, the ferrite content is 45%-55%, the heat conductivity coefficient is larger than or equal to 17.6 W (m.K)-1 (0 DEG C), and the spot corrosion rate lt is achieved. And 0.01 g / m < 2 > / 24Hrs (25 DEG C, 6% FeCl3 solution, 72 hours) can meet the requirements of the heat exchanger.

The present invention relates to the technical field of cooling equipment, specifically a micro-lubrication cooling equipment, including a cooling equipment body, a filtering mechanism, a spraying mechanism and a nozzle mechanism, wherein the cooling equipment body includes a chassis, a machine door is provided on the front of the chassis, a top plate is fixedly connected to the top of the chassis, and a container box is installed on the inner side of the top plate, a container box fixing frame is provided at the bottom of the container box, and one side of the container box fixing frame is fixedly connected to the top plate, and a spraying mechanism is installed on the inner side of the chassis, and the spraying mechanism includes a first electromagnetic valve, and the input end of the first electromagnetic valve is connected to a water pump through a first infusion tube. The present invention can be installed and replaced at any time through the cooling equipment body, and only needs to open the machine door to detect when a fault occurs, and the working status of the equipment can be observed at any time. By providing a time relay and controlling the second electromagnetic valve through the time relay, the gas can be sprayed intermittently from the gas pipe.

The utility model discloses a solenoid valve for an oxygen generator and the oxygen generator, and relates to the technical field of oxygen generators. According to the technical scheme, the valve is characterized by comprising a valve body, a valve rod and a valve seat, wherein a valve cavity, an air inlet, a working port and an exhaust port are formed in the valve body, and the air inlet, the working port and the exhaust port are communicated with the valve cavity; an upper opening and a lower opening are formed in the two ends of the valve cavity respectively, the valve seat is embedded into the valve cavity from the lower opening, and an air inlet channel communicated with the air inlet and the valve cavity is formed in the valve seat. According to the utility model, the air inlet channel is arranged in the valve seat, then the valve seat is independently processed, and the valve cavity is arranged in a through manner, so that the processing difficulty of the valve seat and the valve body can be simultaneously reduced, the processing precision is improved, the assembly is convenient, and the production efficiency is improved.

The utility model relates to the technical field of toilet deodorization, in particular to a hydraulically-driven water separation device which comprises a mounting seat and a valve, and the mounting seat is provided with a deodorization air channel and a water outlet channel which are communicated through an air inlet; the valve is rotationally arranged in the water outlet channel and comprises a control part and an opening and closing part, and the control part is used for controlling the valve to rotate under hydraulic drive of water flow in the water outlet channel, so that the opening and closing part closes the air inlet; and when the water flow in the water outlet channel stops, the opening and closing part is used for driving the valve to rotate under the action of gravity, so that the opening and closing part leaves the air inlet. The valve is arranged in the water outlet channel, the valve is driven by water flow in the water outlet channel to close the air inlet, and the valve is reversely driven under the gravity action of the body to enable the opening and closing part to leave the air inlet; therefore, when water flow exists in the water outlet channel, the air inlet can be closed to prevent the water flow from entering or partially entering the deodorization air channel to cause water inlet damage of the deodorization fan, and the hydraulic driving structure is sensitive in response, accurate in control and more reliable in work.

The utility model relates to working fluid filtering treatment technical field, and disclose advanced ceramic grinding processing working fluid filtration supply system, including the casing, still include: the baffle, the baffle fixedly connected in the casing, the casing front side is provided with the supply area, the casing right side is provided with the reflux area, the casing is provided with the filter mechanism, the filter mechanism surface is provided with the assembly mechanism, the filter mechanism includes: terminal filter, terminal filter fixedly connected in the casing, this advanced ceramic grinding processing working fluid filtration supply system, through setting up the supply area to the working fluid and makes the whole device to the working fluid supply of processing area and to the filtration of working fluid separate, namely, supply pump and reflux filter assembly independent work, both ensure the double -deck effective filtration to working fluid, and can ensure the flow and pressure of working fluid supply to processing area.

The utility model relates to tap technical field, a kind of extrusion tap of preventing tooth collapse, including the handle part and cutting portion being connected, the cutting portion includes cutting edge and correction blade being sequentially arranged along the direction of cutting portion direction to handle part, the cutting portion outer wall is provided with several oil guide grooves along length direction, the head of the cutting edge is provided with tool entry opening, the terminal end of the tool entry opening is not provided with the oil guide groove. The utility model structure design is ingenious, and the tool entry opening fracture of extrusion tap can be effectively avoided.

The invention discloses an artificial intelligence robot based on edge calculation, and relates to the technical field of artificial intelligence. The robot comprises a robot body, walking wheels used in cooperation are fixedly installed at the four corners of the bottom end of the robot body, a connecting holder is fixedly installed on one side of the top end of the robot body, and a patrol probe and a transparent outer cover used in cooperation are arranged at the end, away from the robot body, of the connecting holder; a water storage mechanism and a cleaning mechanism which are used in cooperation with the transparent outer cover are fixedly inserted into the upper end of the robot body, a limiting mechanism used in cooperation with the water storage mechanism is arranged at the end, away from the robot body, of the water storage mechanism, and a labeling mechanism used in cooperation with the robot body is fixedly installed at one end of the robot body; and through arrangement and use of a limiting mechanism, convenience is provided for limiting and fixing of a limiting clamping ring, and later-stage dismounting is facilitated, so that convenience is provided for replacement of a filtering disc, normal proceeding of rainwater filtering operation is guaranteed, and normal operation of a water storage mechanism is further guaranteed.

This invention discloses a traffic flow node anomaly identification system based on a hierarchical fuzzy neural network, belonging to the field of traffic management technology. The behavior recognition module identifies the behavior data of each vehicle based on a hierarchical fuzzy neural network model. The anomaly judgment module analyzes the behavior data of each vehicle based on a vehicle anomaly identification model to determine whether a vehicle exhibits abnormal behavior. When abnormal behavior is detected, an automatic adjustment module tracks the vehicle exhibiting abnormal behavior using a camera. After determining the ETC lane where the vehicle with abnormal behavior is located, it automatically reduces the recognition range of the ETC automatic settlement device at that ETC lane. This identification system can effectively identify vehicle anomalies at toll stations. Furthermore, when a vehicle with abnormal behavior is identified, it automatically adjusts the recognition range of the ETC automatic settlement device at the ETC lane where the abnormal vehicle is located, ensuring normal passage at toll stations while effectively reducing the success rate of vehicles using ETC without authorization.

The utility model relates to the technical field of connectors, in particular to a liquid cooling quick connector which comprises a male connector, a male connector valve element, a male connector spring, a female connector, a female connector valve element and a female connector spring. The male joint is detachably connected to the female joint; a first through hole penetrating axially is formed in the male joint; a first positioning part is arranged in the first through hole; the male connector valve element is axially and movably connected to the first positioning part, the male connector spring is arranged on the male connector valve element in a sleeving mode, and the female connector is provided with an axially-penetrating second penetrating hole. A second positioning part is arranged in the second through hole; the female connector valve element is axially and movably connected to the second positioning part, and the female connector spring is arranged on the female connector valve element in a sleeving mode. The utility model has the advantages that the male joint and the female joint can be conveniently communicated and closed, the flow rate of liquid can be ensured through the matching between the male first through hole and the second through hole, and the male valve head and the female valve head are propped against each other, so that the pressure loss of the connection between the male valve head and the female valve head and the stroke of the valve core are smaller.

The utility model provides a kind of support roller buffer rack placed in belt frame, belong to coal mine electromechanical transport technical field;Including support frame and transport belt conveyor body, the transport belt conveyor body is installed on support frame, the inner wall of support frame is equipped with buffer component, for storing support roller;The buffer component includes support plate, support plate is fixedly arranged in the inner wall of support frame, sliding slot is opened in support plate, the inner wall of sliding slot is slidably provided with first sliding rod and second sliding rod;Through the setting of buffer component, it solves the current from the head transfer support roller to damage, the long distance of transport, the problem of large human consumption, when routine inspection is carried out to transport belt conveyor body, if finding initiative support roller damage, staff need not long-distance transport, just need in the vicinity of transport belt conveyor body, can conveniently take support roller from bearing plate and replace, shorten the transport time and distance of support roller, save manpower.

The invention discloses a well head device with a pressure adjusting function, and relates to the technical field of well head devices, the well head device comprises an oil pipe, a pressure adjusting device, a first electromagnetic valve and a pressure balancing device, the oil pipe is connected with the pressure adjusting device, the oil pipe is connected with the first electromagnetic valve, and the oil pipe is connected with the pressure balancing device; the pressure adjusting device is connected with the first electromagnetic valve and the pressure balancing device, the pressure adjusting device has the functions of detecting and adjusting pressure, the pressure balancing device is used for assisting the pressure adjusting device in adjusting the pressure of the oil pipe, the oil pipe is used for conveying liquid, and the first electromagnetic valve is used for releasing gas.

The utility model relates to a valve clack guide structure of a low-temperature vacuum jacketed valve, which comprises a valve body, a valve rod, a valve cover and a hand wheel, the valve cover is connected above the valve body, the valve rod is connected in the valve body, the upper end of the valve rod penetrates through the valve cover and is connected with the hand wheel, the lower end of the valve rod in the valve body is connected with a valve clack component, and the valve clack component is connected with the valve cover. The valve clack assembly comprises a hexagon nut, a guide cover, a sealing ring and a valve clack, the valve clack is connected to the valve rod, the guide cover is connected to the bottom of the valve clack, the sealing ring is connected between the guide cover and the valve clack assembly, and the sealing ring and the guide cover are locked on the valve clack through the hexagon nut. According to the utility model, better sealing performance can be realized.

The utility model relates to a kind of food processors, including: cabinet, its inside is equipped with the cooking chamber for cooking food, the upper portion of the cooking chamber is equipped with exhaust hole;Negative pressure pump, is located in the cooking chamber outside, and with the exhaust hole communication, for the gas in the cooking chamber is extracted to make cooking chamber inside to be negative pressure state;For preparing food fresh-keeping gas gas generating device;Inside with the air cavity for storing food fresh-keeping gas's gas storage device, air cavity gas inlet with the output end of the gas generating device is communicated, air cavity gas outlet is communicated to the cooking chamber by gas pipeline, and gas pipeline is equipped with for controlling gas flow's flow control valve, when flow control valve opens, the gas storage device is arranged, and food fresh-keeping gas in it can be inhaled into cooking chamber under the action of cooking chamber inside negative pressure.The utility model can reduce the risk of food material being oxidized.

The utility model relates to a pipe section type crude oil water content analyzer which comprises a concentric different-diameter connecting piece, the middle part of the concentric different-diameter connecting piece is a horizontal large-diameter measuring cavity, the left end and the right end of the concentric different-diameter connecting piece are respectively a left-end small-diameter channel and a right-end small-diameter channel, and the upper end of the large-diameter measuring cavity of the concentric different-diameter connecting piece is connected with an upper-end small-diameter channel; the upper end small-diameter channel, the left end small-diameter channel and the right end small-diameter channel are connected with a first flange, a second flange and a third flange respectively; a plurality of measuring probes are arranged in the large-diameter measuring cavity and connected with a processing system provided with an anti-explosion shell. According to the utility model, the measuring cavity is enlarged through reducing, so that the measuring cavity is not easy to block; the measuring probe sheath is fixed through the fixing bracket, which is stable and reliable; the plurality of measuring probes are arranged, so that the measuring precision is greatly improved; the built-in temperature sensor is used for temperature compensation and data correction, so that the measurement precision of the data is further improved; through the installation mode of the upper flange and / or the lower flange, the requirements of different working conditions are met.

The invention relates to the technical field of air conditioner control, and discloses a multi-stage pressure difference rearranged air conditioner variable flow cold water system which comprises a water supply main pipe on a user side, a water return main pipe, at least one vertical pipe system, a variable frequency water pump, a microcontroller MCU and a control unit on a network side, and the vertical pipe systems are arranged between the water supply main pipe and the water return main pipe in parallel. The variable-frequency water pump is arranged at the input end of the water supply main pipe; the vertical pipe system and the variable frequency water pump are both in signal connection with the microcontroller MCU, and the microcontroller MCU is in signal connection with the control unit through the wireless communication module. The invention further provides a control method of the multi-stage pressure difference rearranged air conditioner variable flow cold water system. Dynamic hydraulic balance can be performed according to actual conditions through multi-stage pressure difference re-setting and cooling capacity adjustment to adapt to loads, the required flow is guaranteed, the pressure difference of an inlet and an outlet of a water pump is reduced as much as possible, and the energy saving amount of a water system is increased.

The utility model provides an internal inflow type grid, which relates to the technical field of grid dirt blocking and comprises a rack, a screen combination is arranged at the bottom of the rack, chain combinations are arranged on two sides of the screen combination, and a transmission main shaft is arranged on the side face of the rack in a penetrating manner. According to the utility model, the chain combination is connected to the plum-blossom-shaped wheel and is driven by the shaft-mounted helical gear worm and gear speed reducer, so that the transmission main shaft is conveniently driven to rotate, the transmission main shaft drives the plum-blossom-shaped wheel to synchronously rotate, and the plum-blossom-shaped wheel is utilized to drive the chain combination to realize a further transmission effect; lifting adjustment control is effectively achieved on the screen plate combination through the linkage effect of the chain combination, then residue dirt is conveniently lifted, a flushing pipe is connected with a flushing water source, the interior is sprayed and flushed through a nozzle, then efficient cleaning treatment on the screen plate combination is facilitated, pollutant reduction is facilitated, and the cleaning efficiency is improved. And the cleaning effect is improved.

The drainage filter screen piece is provided with a filter screen body, the filter screen body is provided with an annular supporting part and a protruding part, the protruding part is formed in the center of the annular supporting part and protrudes upwards, and the protruding part is provided with a main drainage opening with a downward opening; the filter screen body is provided with a center line extending up and down; a plurality of first filter holes distributed around the center line are formed in the protruding part, and a plurality of second filter holes distributed around the center line are formed in the annular supporting part; the lowest position of the first filter hole is higher than the highest position of the second filter hole, and an annular garbage storage groove is formed between the lowest position of the first filter hole and the highest position of the second filter hole on the filter screen body. The device has the functions of garbage storage and normal drainage, and also has the effect of increasing the flow along with the increase of the water level.

The invention discloses a large-flow pneumatic pressure plate glue supply pump which comprises a carrier plate for placing a charging barrel, at least two jacking cylinders vertically mounted on the upper surface of the carrier plate, a movable plate connected between the upper ends of piston rods of the jacking cylinders, and a pressure plate connected with the movable plate through at least two vertical connecting rods, a vertically-arranged air cylinder is installed on the lower surface of the movable plate, a cylinder sleeve is connected to a main body part of the air cylinder, an upper connecting shaft extending vertically is installed at the lower end of a piston rod of the air cylinder, and a gluing sleeve is connected to the lower end of the cylinder sleeve in a sealed mode; the lower end of the gluing sleeve with the upper end provided with a sealing plate is connected with a glue suction barrel in a sealed mode, the lower end of the upper connecting shaft is connected with a lower connecting shaft through a connecting rod, and the lower end of the lower connecting shaft extending vertically penetrates through the gluing sleeve and is provided with a glue scraping spoon. According to the glue supply device, glue can be continuously supplied outwards at a large flow, so that the requirement of a photovoltaic production line for the glue dosage is met, and the stability of the output glue pressure and flow can also be guaranteed.

The invention discloses a flue capacity increasing structure which comprises a boiler, a desulfurization device, a chimney and at least two air inducing pipelines connected between the boiler and the desulfurization device in parallel, each air inducing pipeline is sequentially provided with a flue gas treatment device and a first fan in the flue gas flow direction, and the air inducing pipelines connected in parallel are connected through a communicating pipeline. The flow converging device is arranged between the air inducing pipeline and the desulfurization device, the inlet end of the flow converging device is connected with the outlet end of the air inducing pipeline, and the outlet end of the flow converging device is connected with the desulfurization device through a flow converging pipeline; the inlet end of the pressurizing pipeline is connected with the communicating pipeline, and the outlet end of the pressurizing pipeline is connected with the inlet end of the junction station; and the second fan is arranged on the pressurizing pipeline, and the air pressure of the second fan is larger than that of the first fan. The flue capacity increasing structure provided by the invention can resist a certain degree of flue blockage, reduce abnormal shutdown of a generator set and ensure smooth power generation.

The invention discloses a high-efficiency water-based paint production filling machine, relates to the technical field of water-based paint filling, and aims to solve the technical problem that the filling quality and efficiency of an existing water-based paint filling machine cannot be considered at the same time. A water paint conveying pipe fitting is arranged on a bearing mounting assembly of the filling mechanism, a fluid acceleration assembly is arranged at the output end of a vertical moving assembly, an adjusting assembly is arranged on the fluid acceleration assembly, and the fluid acceleration assembly and an anti-spurting assembly form a large-flux filling state and an anti-spurting filling state through the adjusting assembly; according to the water-based paint filling device, it can be guaranteed that a large amount of water-based paint can be rapidly filled when needed, paint can be prevented from overflowing when needed, waste and pollution are reduced, the filling quality can be improved, and the overall filling production efficiency is improved.

The utility model relates to a kind of bell and spigot type precast concrete pipe joint construction processing structures, belong to concrete pipe construction structure technical field, including multi-section bell and spigot type precast concrete pipe, the end of each bell and spigot type precast concrete pipe is equipped with sleeve pipe, sleeve pipe is equipped with tapered sealing surface, the outside of the other end of each bell and spigot type precast concrete pipe is equipped with tapered sealing portion, rubber sealing sleeve is sleeved on tapered sealing portion, the junction of adjacent bell and spigot type precast concrete pipe is equipped with sealing mortar layer, the bottom of the both ends of each bell and spigot type precast concrete pipe is equipped with support block.The support block of the utility model can support bell and spigot type precast concrete pipe to lift, facilitate evenly smearing sealing mortar layer outside sleeve pipe, prevent sealing mortar layer to disconnect, by tapered sealing surface, tapered sealing portion, rubber sealing sleeve, sealing mortar layer multilayer sealing, effectively fill gap, substantially reduce leakage risk, guarantee pipeline system water delivery, drainage function stability.

The utility model discloses a biliary tract flushing catheter which comprises a plastic sheath tube, one side of the tail end of the plastic sheath tube is communicated with an injection manifold, the injection manifold is communicated with an injector, a guide steel wire is arranged in an inner tube of the plastic sheath tube in a penetrating mode, and the tail end of the guide steel wire is fixedly connected with a soft plug. The head end of the guide steel wire is fixedly connected with a soft non-transmission wire end, the soft non-transmission wire end comprises a spherical top, the edge of the bottom side of the spherical top is fixedly connected with a water flow reflection skirt edge, the middle of the bottom of the spherical top is fixedly connected with a connecting column, and the guide steel wire is fixedly connected with the bottom end of the connecting column. Through the design of the soft non-transmission wire end, the direction of flushing water flow is changed, the position where the head end of the catheter reaches can be clearly displayed under rays, operability is improved, meanwhile, due to the design of the pipe diameter, it is guaranteed that the catheter smoothly passes through a duodenoscope forceps channel, the flow and the flow direction of the flushing water flow are guaranteed, and flushing is more effective.

The present application provides a technology capable of ensuring the flow rate of fuel gas supplied to a fuel cell in a fuel cell system. The fuel cell system includes a fuel cell, a fuel tank that stores fuel gas supplied to the fuel cell, a fuel gas supply path that includes a linear solenoid valve and an ejector provided on a downstream side thereof, and a control device that supplies the ejector with fuel gas at a target flow rate by controlling the operation of the linear solenoid valve. The control device is configured to selectively execute a linear control mode in which the target flow rate is achieved by maintaining the opening degree of the linear solenoid valve constant and a pulse control mode in which the target flow rate is achieved by periodically changing the opening degree of the linear solenoid valve between at least two values.

The utility model discloses a pressure storage tank disc ladder two -way adjustable sliding support connecting structure, including upper support and lower support, the upper support and lower support are connected through high -strength screw rod and nut between, one side of lower support is equipped with U -shaped groove, the upper support side edge is welded with the transmission board, the transmission board is inserted in the U -shaped groove and has realized the height adjustment change between the upper support and lower support, can effectively adapt to the two -way uneven settlement that pressure storage tank body and disc ladder between because of the foundation difference produce, relieve the stress of connecting part, improve the stability and security of connecting structure, guarantee disc ladder normal use and personnel safety etc. technical features.