756results about How to "Ensure normal flow" patented technology

The invention relates to an air incorporation measurement system used for vehicle exhaust-gas disposal. The system is characterized in that the measurement system comprises a measurement supply unit, a measurement drive part, an air solenoid valve, a spillover valve, a urea tank, a pressure accumulation cavity temperature sensor, a mixing cavity pressure sensor, a DCU control part, and a catalyst, etc. The measurement supply unit is connected with the catalyst, the air solenoid valve is connected with a quick coupling, an outlet quick coupling is connected with a nozzle by a pipeline, urea solution in the urea tank is conveyed to the measurement supply unit by a membrane pump, a reflux inlet is connected with the spillover valve by the quick coupling, the reflux flows to the urea tank, a compressed air inlet is connected with a compressed air source, and a mixing outlet sprays gas-liquid mixture into an exhaust duct through the nozzle by means of being connected with the pipeline. Themeasurement system of the invention features compact structure, small volume, light weight and accurate measurement, thus saving much space for vehicle layout while maintaining relatively high measuring accuracy and fog effect and ensuring reliability of normal operation in different areas and environments.

The invention belongs to the field of physical experiment equipment of petroleum and natural gas exploitation, and particularly relates to a heterogeneous reservoir water injection commingling interlayer disturbance simulation system. The system comprises a constant-flux pump, a plurality of containers, a five-way valve, a core holding unit, an X-ray tube, a detector and a data processing and imaging system. The constant-flux pump is connected with the inlet of each container through pipelines; the inlet of the five-way valve is respectively connected with the outlet of each container through pipelines. A left sealing cover of the core holding unit is provided with an injection port, the right sealing cover of the core holding unit is provided with an output port, the inner sides of the left sealing cover and the right sealing cover are sequentially provided with a core end cap rubber mat, a core end cap and a sealing rubber mat from outside to inside, a plurality of circular holes are formed in the core end cap rubber mat, and the core end cap and the sealing rubber mat are provided with a plurality of layer chambers. A plurality of layers of heterogeneous reservoir slab models are arranged in a sealing rubber sleeve. The outlet of the five-way valve is connected with the injection port, and fluid passes through the output port and enters a measuring cylinder. The heterogeneous reservoir water injection commingling layer disturbance simulation system can reflect layer disturbance degree through the composition and size of liquid amount at the output end, and visualized analysis is achieved.

The invention provides a lane line detection system based on geometric attention perception. The lane line detection system a backbone network;a semantic segmentation branch and ageometric distance embedding branch which are arranged behind the backbone network; an attention information spreading module which acts between the sampling layers in two adjacent stages of the decoder, namely is arranged between the whole lane line semantic segmentation branch and the geometric distance embedding branch; a geometric attention sensing module which is arranged at the tail ends of the semantic segmentation branch and the geometric distance embedding branch; and a jump pyramid fusion up-sampling module which is connected with the backbone network and the geometric attention sensing module. The system adopts a multi-task branch network structure; in addition to a lane line segmentation task, a geometric distance embedding branch is added, and the branch guides lane line segmentation by learning continuous distance representation from the center of a lane line to a boundary, so that the problem that the lane line cannot be effectively detected from a complex road scene due to the fact that theheight depends on sparse lane line labeling is solved.

The inVention belongs to the technical field of noVel cigarettes, and particularly relates to a cigarette structure of a heating non-combustible cigarette. The heating non-combustible cigarette is composed of a cylinder hollow coiling block, a cleaning spacer sleeVe arranged at the front end of the coiling block, and a smoking product section and a cooling filtering section which are sequentiallyarranged inside the coiling block. By arranging the cleaning spacer sleeVe, a user can insert a heating body into a cigarette, no cut tobacco can drop out, meanwhile, small parts in smoking products cannot fall into a heater in the heating process, and cleanness in the heater is ensured.

The horizontal solid-liquid mixer includes a speed reducer, bearing seats, mixing chambers of a barrel with powder inlet and liquid inlet in the upstream and discharge port and gas outlet in the downstream, a stirring shaft in the center of the barrel and with ends connected through the rotating shaft to the bearing seats, stirring vane wheel fixed onto the stirring shaft, baffles on the wall of the barrel to separate the barrel into several chambers in the changeable size, and stirring oars fixed onto the stirring vane wheel. Compared with available technology, the present invention has the advantages of high mixing efficiency, high mixing speed, high mixed material homogeneity, and wide application range.

A bullet-resistant material is composed of bullet-resistant layer and reinforcing transition layer. Its preparing process includes such steps as spreading high-osmos medium on the surface of said both layers, making a resin-filling port, arranging the spiral vacuumizing tubular wire on mould, loading said both layers and mould in a film case, sealing it, vacuumizing to suck the resin by said layers via said resin-filling port, pressing, solidifying and demoulding.

The invention relates to the technical field of tail gas emission control of vehicles, and discloses a particulate matter sensor. The particulate matter sensor is provided with a conductive shell, a cylindrical protective piece and a high-voltage electrode which is arranged in the conductive shell and is insulated from the conductive shell, wherein the conductive shell is grounded; the high-voltage electrode is connected with a high-voltage power supply; one end of the conductive shell is connected with one end of the protective piece in a sealed mode; and a tail gas inlet and a tail gas outlet are formed in the protective piece. A measurement method for the particulate matter sensor comprises the following steps of: grounding the conductive shell; applying high voltage onto the high-voltage electrode; allowing gas to be detected to flow through the clearance between the high-voltage electrode and the conductive shell, wherein particulate matters in the gas to be detected are ionized or polarized into conductors through the high-voltage electrode, and other matters in the gas to be detected are not ionized or polarized into the conductors; measuring leakage current, capacitance or resistance values between the high-voltage electrode and the conductive shell; and acquiring the concentration of the particulate matters in the gas to be detected according to a functional relation. The particulate matter sensor and the measurement method thereof are high in measurement accuracy; and the particulate matter sensor has long service life.

The invention discloses an acidic zinc single liquid flow energy storage battery. A single liquid flow battery system is a battery pack consisting of one or more battery monomers which are capable of filling or emptying electrolyte at the same time and connected with one another in series or in parallel, so that large-scale energy storage can be realized; and each of the battery monomers comprises a compound electrode which is used for depositing zinc and serves as an anode, low-acidity resistance lead dioxide serving as a cathode, compound acidic zinc sulfate which has a corrosion inhibitionfunction and serves as electrolyte, a relevant battery shell and an electrolyte storage tank. The working process of the single liquid flow battery system only needs one pump to recycle the electrolyte and a cation membrane is not needed, so the battery structure is simplified and the production cost of the battery is reduced; in an acidic environment, the chemical activity of zinc is high and hydrogen separation and dissolving reaction are easily performed on the zinc; due to a novel compound electrode, the compound electrolyte having the corrosion inhibition function and the structural design capable of emptying the electrolyte, the self discharging coefficient of the battery is reduced greatly, and high voltage efficiency and capacitance efficiency can be obtained, so the energy efficiency of the whole battery is improved.

The inVention belongs to the technical field of noVel cigarettes, and particularly relates to a cigarette structure of a heating non-combustible cigarette. The heating non-combustible cigarette is composed of a cylinder hollow coiling block and a cigarette front section, a cigarette middle section and a cigarette back section which are sequentially arranged inside the coiling block, and the diameters of the cigarette front section, the cigarette middle section and the cigarette back section are all equal to the inner diameter of the coiling block. By forming multiple sheet heating body insertion grooVes, a consumer can conVeniently insert sheet heating bodies into cigarettes. When the structure of the multiple sheet heating body insertion grooVes is adopted for heating, the surplus sheet type heating body insertion grooVes and suction resistance regulating air holes can jointly achieVe the air guiding effect, and the insertion grooVes can also replace the suction resistance regulatingair holes to directly achieVe the air guiding effect.

The invention relates to a purifying art for a water system in a landscape park. Surface water is delivered through a sand basin (3) and then to an oxidation pond (4) with filler, the water then flows into an artificial swamp (1), and the water which flows out of the artificial swamp is regulated and deposited by a stabilizing pond (5), finally the water flows into the water pond of the landscape park; the water is pumped into a stream swamp (2) of the park by a pumping device (6), the water in the stream swamp is pumped to a mudflat swamp (7), thus the water in the mudflat swamp can automatically flow back to the water pond of the landscape park; the domestic sewage in the landscape park is treated in the biomass energy transforming center and then is delivered into the oxidation pond (4) with filler. The biomass energy transformation includes the procedures of adjusting, oil separation, anaerobic reaction, aerobic reaction and depositing; the biomass energy transformation is mixed with the common domestic sewage after two grades of anaerobic reactions. The invention can assure the water quality in the landscape park to be equal to or better than the water quality for entertainment in the landscape park; the treatment procedure can protect environment, thereby providing satisfactory water source for an artificial lake as well as effectively treating the waste; and the invention can provide the needed energy for the whole treatment system and have great social and economic benefits.

The invention relates to the technical field of electronics and discloses a power distribution cabinet with heat-dissipating and dust-preventing functions. The power distribution cabinet with the heat-dissipating and dust-preventing functions comprises a cabinet body and a base, wherein a waterproof hood is fixedly mounted on the top of the cabinet; a connecting block is fixedly mounted on the topend of the cabinet; a first motor is fixedly mounted on the lower surface of the connecting block; the output shaft of the first motor is fixedly connected to a rotating rod; one side of the rotatingrod is fixedly connected to a first bearing; a lead screw is movably connected in the first bearing; the bottom end of the lead screw is movably connected to a second bearing; a nut is in threaded connection to the lead screw; and the upper surface of the nut is fixedly connected to a connecting rod. According to the power distribution cabinet with the heat-dissipating and dust-preventing functions, by arranging the first motor, the lead screw, the nut, the connecting rod and the bearing, the first motor drives the lead screw to rotate to drive the nut on the lead screw to rotate so as to further drive the connecting rod to drive the nut on the lead screw to move up and down, so that a hairbrush driven by the first motor brushes down dust, with relatively small grain size, attached to a dustproof screen, and the dust enters a collecting box.

The invention relates to a reconfigurable centrifuge-rotor micro-nano spinning formation device. The device comprises a feeding device, a spinning device and a forming device. The feeding device is used for conveying spinning raw material to the spinning device. The spinning device comprises a driving device, a spinning rotary shaft and a spinning disc. The spinning rotary shaft is internally provided with a liquid storage tank and a discharge channel. The liquid storage tank is used for receiving and accommodating spinning raw material conveyed from the feeding device. An inlet of a discharge channel communicates with the liquid storage tank. An outlet of the discharge channel communicates with the outside of the rotary shaft. A spinning channel is arranged in the spinning disc. The spinning rotary shaft is axially provided with more than two groups of discharge channels. The forming device is used for collecting micro-nano fibers which are formed by curing of spinning raw material sprayed out by the spinning device. The reconfigurable centrifuge-rotor micro-nano spinning formation device has the following beneficial effects: the multiple spinning discs are installed in a matching manner; the spinning discs and the spinning rotary shaft are detachably connected; according to needs, the number of the spinning discs installed is determined; spinning efficiency is increased; furthermore, the formation device can move up and down so that fiber products of different shapes and structures are obtained.

The engine (1) has a cylinder block coolant jacket operated in a turbine housing (13) in a turbocharger (12) during a subphase of a heating phase of the engine according to nitrogen oxide flow strategy. A cooling circuit (4) is separated from the cylinder block coolant jacket and connected with a common pump (7) that is joined to the cylinder block coolant jacket. A bypass (11) is provided downstream to the pump and upstream to a cylinder block coolant inlet (9). The housing is made of light material i.e. aluminum, where the housing or the turbocharger is provided with the cooling circuit. An independent claim is also included for a method for controlling coolant during a heating phase of an internal combustion engine.

The invention discloses an anti-dust ventilation waterproof device for a power distribution cabinet. The anti-dust ventilation waterproof device comprises a power distribution cabinet body, a vacuum cleaner, a dryer box, an exhaust fan, a filter screen, a flashing, a sunshade, a camera, an LED lamp, a temperature sensor and a humidity sensor. The bottom end of the power distribution cabinet body is provided with a damping plate and a moisture-proof plate. The power distribution cabinet body is provided internally with the vacuum cleaner. The vacuum cleaner communicates with a suction inlet through a suction duct. The power distribution cabinet body is provided internally with the exhaust fan. The filter screen is disposed on the side wall of the power distribution cabinet body. The rear side of the exhaust fan is provided with the dryer box. The side wall of the power distribution cabinet body is provided with the flashing. The top end of the power distribution cabinet body is provided with a support. The sunshade is disposed on the support. The inner wall at the top end of the power distribution cabinet body is provided with the camera. The top end of the power distribution cabinet body is provided with the LED lamp. The inner wall of the power distribution cabinet body is provided with the temperature sensor and the humidity sensor. The invention reduces component aging caused by over high temperature, extends the service life, prevents the dust and moisture from affecting the operation of the electronic components, and is simple in structure, easy to use and conducive to promotion.

The invention discloses a number concentration measurement device of atmospheric ultrafine particles. The number concentration measurement device comprises an atmospheric airflow channel, a sample gas flow channel, a shell gas flow channel, a gas inlet device, a saturated solution device, a condensing device and an optical detection device. According to the number concentration measurement device, on the basis of a condensation nucleus theory and a light scattering measurement theory, i.e. shell gas flow passes through steam of a heated saturated solution and then is mixed with the air flow of the atmospheric ultrafine particles, the ultrafine particles pass through the condensing device and then are condensed to grow up, and then a light scattering technique is used for measuring the particles which are condensed to grow up, so as to obtain a number concentration value of the particles. By using the shell gas flow designed in the number concentration measurement device, the loss of sample gas flow particles can be reduced, and the condensation nucleus efficiency of the ultrafine particles can be effectively improved. The number concentration measurement device has the advantages of small and compact structure and high applicability, and the number concentration of the particles with a particle diameter range between 3 nm to 5 microns can be measured.

The invention relates to a motive power machine closed loop inclinable polygonal excitation gear box testbed. The testbed comprises a vibration isolation T-shaped cast iron foundation platform, a gear box testbed body fixed to the vibration isolation T-shaped cast iron foundation platform and a refrigeration circulation system connected with the gear box testbed body, a cylindrical tooth gear is adopted to simulate the contact surface of a wheel track, vertical excitation and axial excitation are utilized, and the vibration situation of a gear box of a high speed train in the actual running process is simulated actually; mechanical torques different in intensity are generated inside a closed loop system through engagement position changes of a large inclined gear and a small inclined gear, so that energy consumption is reduced. An inclinable mounting base beam can generate certain inclination in the axial direction and the radial direction, and whether the gear box can guarantee normal circular flow and leakproofness of lubricating oil in the box or not in the operation process of the train is detected. By means of the testbed, comprehensive reliability tests can be conducted on the gear box of the high speed train, a good promotion effect is achieved for improving safety running of the train and improving sitting comfort of a high speed motor train unit, and good social and economic benefits are achieved.

The invention relates to a wet flue gas desulfurization (WFGD) process for gypsum through oxidization in a tower by using a calcium-based strongly basic substance, belonging to the technical field of WFGD. The invention is characterized in that oxidization automatic isolators and oxidization air tubes in the slurry pond of an absorption tower are alternately arranged at intervals to divide the whole slurry pond into an upper low pH value region and a lower high pH value region; the calcium-based strongly basic substance is used as an absorbent; the absorbent slurry is sprayed downwards from the top of the absorption tower to be in contact with flue gas for absorbing sulfur dioxide, and then, the absorbent slurry falls into the upper low pH value region of the slurry pond to be forcibly oxidized; a jet mixing system is adopted for preventing solid matters from depositing on the bottom of the absorption tower; and an upper slurry discharging port is used for discharging slurry and dehydrating gypsum to generate solid gypsum powder the water content of which is less than 10%. The invention has the advantages that ideal desulfurization efficiency can be achieved only by smaller liquid-gas ratio, absorption of sulfur dioxide and forced oxidization and crystallization of by-products are completed in the single absorption tower, the equipment investment is saved, the power consumption is lowered, and the operating cost is low.

Disclosed is a shaft seal which is suitable especially for vacuum pumps such as propeller pumps. Said shaft seal comprises an inner sealing ring (18) that can be connected to the shaft, and an outer sealing ring (20) which surrounds the inner sealing ring (18). A circumferential groove (30) into which buffer gas can be introduced via a feeding duct (22) is provided in the outer sealing ring (20). A buffer gas disk (34) that is fitted with an attachment (32) which extends into the groove (30) can also be connected to the shaft (10), whereby a buffer gas chamber (28) is embodied in the groove (30). Said buffer gas chamber (28) is joined to a sealing gap (40) located between the inner and the outer sealing ring (18, 20) via a chamber gap (36) which the buffer gas can penetrate. A separation chamber (42) which is formed by the inner and the outer sealing ring (18, 20) and is connected to a discharge duct (44) in order to evacuate buffer gas adjoins the sealing gap (40).

The invention relates to a reactive distillation method for preparing cyclohexanol through hydration of cyclohexene and a device of the method. According to the reactive distillation method and the device thereof, a ZSM-5 molecular sieve is adopted as a reaction catalyst, cyclic crown ether or tertiary amine is adopted as a phase transfer catalyst, and a tower plate of a reactive distillation tower is a non-porous tower plate combination body composed of non-porous tower plates, U-shaped vapor rise pipes and annular gas distributors in form. By means of the reactive distillation method and thedevice thereof, the sieve plate hole channel blockage problem caused when vapor at the high gas velocity drives the catalyst to impact the bottom of a sieve plate can be solved, the single-pass conversion rate of cyclohexene is increased, and the reaction energy consumption is reduced.

The invention provides a micro-fluidic chip for chemiluminescence detection, and a using method and a reagent cleaning method thereof, and belongs to the field of biochemical testing devices. The micro-fluidic chip comprises a substrate and a cover plate which form a sealing environment and are used for a micro-fluid to flow, the substrate is covered with the cover plate, and the substrate comprises: a sample adding hole and a diluted solution adding hole at the first layer; a sample quantification groove, a sample overflow groove, a diluted solution quantification groove and a dilution overflow groove at the second layer; an incubation groove at the third layer, solution storage grooves at the fourth layer, a detection groove at the fifth layer and a waste liquid groove at the sixth layer, wherein the sample quantification groove is communicated with the incubation groove, the diluted solution quantification groove is communicated with the incubation groove, the incubation groove is communicated with the detection groove, and the detection groove is communicated with the waste liquid groove through a hydrophobic flow channel. The separation, mixing and detection of a liquid is realized without repeatedly adding a sample, and the whole process is automatically completed, so the efficiency is increased, and the cost is realized; and the cleaning of a reaction reagent is realized, so the working efficiency is increased.

The invention provides a computer case heat dissipation device capable of offsetting, and relates to the technical field of case heat dissipation. The computer case heat dissipation device capable ofoffsetting comprises a shell, an air outlet is fixedly formed in the left side of the shell, a heat dissipation cylinder is fixedly installed at the right end of the shell, guide rods are fixedly installed at the right end of the heat dissipation cylinder, a protective cover is slidably connected between the guide rods, a first spring is fixedly connected to the right end of the protective cover on the periphery of the guide rods, and a fan is rotatably connected into the protective cover. The invention discloses a computer case heat dissipation device capable of offsetting. According to the technical scheme, the fan is enabled to be close to the processor during heat dissipation to improve the heat dissipation effect while peripheral air flow of the processor is ensured in a normal state,the air outlet is automatically opened during heat dissipation and is automatically closed when heat dissipation is stopped, dust is prevented from entering the casing, and normal operation of internal parts is ensured.

The invention relates to a canal type thickener, which is a canal overall. Along an ore pulp flow path, the thickener includes a canal head, a canal body and a canal tail in order. Ore pulp enters a thickening pond through a feeding port, heavy particles in the ore pulp undergo preliminary settlement in the thickening pond. The low concentration ore pulp overflowing the canal head enters the canal body to undergo further settlement. When the low concentration ore pulp flows to the canal tail, it is already in a clear water state basically and enters a clear water pond, and is discharged through a drain hole. In the invention, the thickener is changed from the traditional ''round pond'' type to the ''canal type'', thus effectively solving the problem of large floor area of the thickener. The canal structure is in linear arrangement, can be subjected to buried installation, and does not take up the volume of a concentrating mill basically. With a long canal and a large actual settlement area, the structure of the thickener can be simpler, thereby effectively reducing the production cost.

The invention relates to a rapid direct-current deicing short circuit device of an electric transmission line and belongs to the technical field of electric power line device fittings. According to the structure, the rapid direct-current deicing short circuit device of the electric transmission line comprises a short circuit cable (1). The two ends of the short circuit cable (1) are respectively connected with one line hanging connection clamp. One end of an upper clamping block (2) of each line hanging connection clamp and one end of a lower clamping block (3) of the line hanging connection clamp are movably connected through a hinge, the other end of each upper clamping block (2) is provided with an upper semi-tile combined beryllium copper sleeve (5), and the other end of each lower clamping block (3) is provided with a lower semi-tile combined beryllium copper sleeve (6), wherein the upper semi-tile combined beryllium copper sleeve (5) and the lower semi-tile combined beryllium copper sleeve (6) are matched with the overhead line in diameter. The two ends of the short circuit cable (1) are respectively connected with a downward-convex conductive block (7) in a rapid screwing mode through an internal-thread clamping connector (8). The lower end of each pull rod (4) is square and is connected with the middle of one lower clamping block (3) through a shotpin mechanism. According to the rapid direct-current deicing short circuit device of the electric transmission line, the line hanging connection clamps are connected to two overhead lines which are erected in parallel, a large current power source is loaded between adjacent phases of the overhead lines, heat generated through a resistor of the overhead aluminum conductors is utilized, so that attached ice is rapidly deiced and eliminated, and adjacent phase connection can be rapidly and conveniently conducted. The rapid direct-current deicing short circuit device of the electric transmission line has the advantages of being capable of saving labor, short in time, rapid in installation, convenient to install, and firm.

The present invention relates to the field of animal feeding and discloses an intensive combined-cage type animal house. The animal house comprises a shell that forms a confined space isolated from the outside, a bracket, a three-dimensional manipulator, a plurality of animal cages, and a plurality of through-holes through which the confined space is connected with the outside, wherein the bracket, the three-dimensional manipulator and the animal cages are all arranged in the shell, and the through-holes include a feed port, a padding port, a water inlet, an air inlet, an exhaust port and a garbage outlet. The animal cages are disposed on the bracket and are provided with pipes connected to the through-holes, respectively. The manipulator is controlled by a computer and can automatically take and place the animal cages and replace paddings. The plurality of the through-holes are controlled by the computer to provide materials for the animal house and transport waste from the animal house. The shell of the animal house forms the confined space that is isolated from the outside ,and the confined space is connected with the outside through the through-holes, and the operator does not need to enter the animal house, so the space is saved, air and light control is limited to the animal house, so that people are free from direct contact with animals during feeding, therefore the effective control volume is reduced, and the control system is simplified, thereby reducing the equipment investment and reducing the energy consumption of the system operation.

The invention relates to a method and a device for further purifying wet desulfurization purified flue gas. The method and the device are used for repurifying the purified flue gas by virtue of a water film and collecting and recycling repurifying liquid. The device comprises a wet desulfurization device, a water film filler layer and a liquid collector, wherein the wet desulfurization device comprises an absorption tower and a purified flue gas duct used for discharging the purified flue gas, the absorption tower is connected with the purified flue gas duct and is internally provided with an absorbent spraying layer, the water film filler layer is arranged above the absorbent spraying layer, and the liquid collector is arranged between the water film filler layer and the absorbent spraying layer. With the adoption of the method and the device, the purified flue gas is fully repurified, residual substances such as sulfur dioxide, sulfur trioxide, hydrogen chloride, hydrogen fluoride, dusts, materials entrained by gas and liquid, escaped ammonia and aerosol which forms PM2.5 in the purified flue gas are effectively removed, the problem of residual pollutants in existing wet desulfurization purified flue gas is efficiently solved, the running cost is low, the energy-saving and environment-friendly effect is remarkable, and the method and the device are suitable for being popularized and applied in the field of retreatment of the wet desulfurization purified flue gas.

The invention discloses a post-peak fractured rock triaxial slurry permeability test system and method. The system comprises a permeation system, an axial loading system, a circumferential loading system, a grouting pressure system and a data acquisition and analysis system. The method comprises the following steps: 1, debugging the test system and checking the running condition of the test system; 2, mounting a rock sample; 3, starting and setting the axial loading system; 4, starting and setting the circumferential loading system; 5, fracturing the rock sample to a post-peak fractured state;6, carrying out a grouting permeability test on the rock sample in the post-peak fractured state; 7, ending the test; 8, processing the test data. The permeability change characteristics of the slurry in the rock post-peak fracture process can be effectively determined; and the problems of unsmooth permeation of slurry in the fractured rock sample, easy blockage of the pipeline, non-uniform pressure action of the slurry, difficulty in confining pressure control, difficulty in sealing implementation and the like in triaxial slurry permeability test of different post-peak fractured state rockscan be greatly solved.

The invention relates to an enhanced sealing gasket for a fuel cell. The enhanced sealing gasket is mainly used for sealing various fluids in the fuel cell, so that the various fluids in the fuel cellare strictly isolated and can strictly flow in each channel and flow field. By mainly improving the structure of the gasket, the sealing reliability is improved, and the capability for resisting thefailure of a sealing structure is enhanced; and by utilizing two paired enhanced sealing gaskets in the fuel cell, the sealing reliability is further improved. The enhanced sealing gasket mainly structurally comprises a sealing matrix and a plurality of sealing bosses, wherein the sealing bosses are arranged on the sealing matrix and are vertical to the axial direction of the cross section of thegasket.

Provided is a medical tube that is capable of preventing thrombi from adhering to the inside of a side hole thereof such that a required and sufficient opening area of the side hole is maintained, as well as of preventing a kink from being generated in, e.g., a catheter using the medical tube with the side hole. A side hole is provided through a side surface of a catheter body. A strand of a braid member in the vicinity of the side hole is covered with a resinous protective resin portion, thus being kept from exposure at the inner peripheral surface of the side hole.

The invention relates to an ink box, and belongs to the technical field of printing. The ink box comprises an ink box body, an ink storage cavity, a sponge groove, an ink injection pipe, an ink discharge pipe, an air intake and an ink discharge opening. The ink storage cavity is located in the ink box body. The air intake is connected with the ink injection pipe and located in the top of the ink box body. The ink discharge opening is connected with the ink discharge pipe. The sponge groove is located in the bottom of the ink storage cavity. The sponge groove is of a closed structure with the two ends provided with a first air hole and a second air hole respectively, and a sponge is arranged in the sponge groove. The sponge groove is connected with the ink storage cavity through the first air hole and connected with the ink injection pipe through the second air hole. The ink box is simple in structure, easy to machine, convenient to use, smooth in printing, capable of saving ink, not prone to leakage and reliable in performance.