355 results about "Dry gas" patented technology

The utility model relates to the technical field of hydrogen drying devices, in particular to a low-pressure, low-dew-point and low-pressure-drop hydrogen drying device which comprises an adsorption tower which comprises a tower A and a tower B, after water is cooled and separated through a regeneration cooler and a regeneration gas-water separator, the hydrogen enters an adsorption tower A through V1 to absorb water and dry to meet the requirement, the hydrogen is discharged out of the tower and passes through V7 to reach a gas using point, a small part of about 20% of gas is divided from dry gas at an outlet and is electrically heated to 180 DEG C, and the gas is sent to a tower B through V6 to regenerate and activate an adsorbent; hydrogen absorbing moisture is discharged from the tower and enters a gas inlet cooler and a gas inlet gas-water separator through a V4, the temperature of the cooled and dehydrated hydrogen is greatly increased after the cooled and dehydrated hydrogen is pressurized by a booster pump, the cooled and dehydrated hydrogen is converged with hydrogen at an inlet and then passes through a regeneration cooler and a regeneration gas-water separator, the cooled and dehydrated hydrogen returns to the adsorption tower A to adsorb moisture, and first-step pressurized reflux drying is completed; and similarly, hydrogen is adsorbed from the tower B, is subjected to split-flow heating regeneration, passes through the tower A, is pressurized and then flows back to the tower B again.

The invention discloses a low-temperature cold trap water removal device which comprises more than two water removal channels which are connected in parallel; each water removal channel comprises a refrigeration water removal gas path and an ice melting purging gas path which are connected in series; each refrigeration and water removal gas path is also connected with an inlet of a dry gas collection gas path, and an outlet of the dry gas collection gas path is used for being connected with an analyzer; and each water removal channel is connected with a controller, and the controller is used for controlling the refrigeration water removal gas paths and the ice melting purging gas paths of the different water removal channels to operate in a staggered mode. According to the application, moisture in the gas to be dewatered can be effectively removed, frost can be timely removed, and related phenomena such as relatively large dead volume of the cold trap can be avoided.

The embodiment of the utility model provides a clamp for optical module testing and optical module testing equipment, and the clamp comprises a housing which comprises a top plate, a bottom plate and side plates which are connected with the top plate and the bottom plate, and the side plates, the top plate and the bottom plate form an accommodation space; the top plate is provided with an airflow channel for introducing dry gas into the accommodating space; the temperature control assembly is arranged in the accommodating space; the limiting structure is provided with a limiting through hole, the limiting structure is arranged corresponding to the temperature control assembly, the limiting through hole is provided with a limiting boss corresponding to the temperature control assembly and an inserting cavity corresponding to the limiting boss, and the inserting cavity is used for inserting the optical module to be detected; and the driving mechanism is arranged in the accommodating space and is in transmission connection with the temperature control assembly. According to the optical module testing device, the shell is composed of the top plate, the bottom plate and the side plates, and the side plates, the top plate and the bottom plate define the relatively-closed containing space, so that the air tightness of the shell is improved, air exchange between the shell and the outside is reduced, and normal proceeding of optical module testing is guaranteed.

A method for improving flowmeter accuracy is provided. The flowmeter comprises at least one flow tube, at least one pickoff sensor attached to the flow tube, at least one driver attached to the flow tube, and meter electronics in communication with the at least one pickoff sensor and driver. The method comprises the steps of vibrating at least one flow tube in a drive mode vibration with the at least one driver and receiving a sensor signal based on a vibrational response to the drive mode vibration from the at least one pickoff sensor. An unremediated density is derived with the flowmeter. An unremediated mass flow is derived with the flowmeter. An extended drive gain is derived with the flowmeter. At least one flow variable is received. A density ratio is calculated. A plurality of wet gas coefficients is provided. A dry gas mass flow rate is calculated with the density ratio and at least one of the plurality of wet gas coefficients.

The invention discloses a process for adsorbing and separating ethane by using catalytic dry gas, and aims to solve the technical problems that in the prior art, the ethane adsorption effect is relatively poor, an adsorbent is not easy to regenerate, the chemical stability is relatively poor, next adsorption can be carried out only after desorption is completed after adsorption saturation, and the working efficiency is low. The process comprises the following steps: S1, pretreating dry gas; s2, preparing an adsorbent; and S3, the dry gas pretreated in the S1 is pressurized to the pressure condition required by the process through a compressor, and then the dry gas is cooled through circulating water and low-temperature refrigerant water in sequence. According to the process, the adsorbent is prepared by loading copper chloride on activated carbon, the prepared adsorbent has a better adsorption effect on ethane, the adsorbent can be regenerated and is good in chemical stability, and through the design of the two adsorption beds, one adsorption bed performs desorption while the other adsorption bed performs adsorption operation; and continuous adsorption and desorption operation can be realized, and the working efficiency is higher.

The invention discloses a suspension bridge main cable with a dehumidification structure and a dehumidification method, the suspension bridge main cable comprises a cable strand, a winding wire and a wrapping tape, the winding wire is wound outside the cable strand, and the wrapping tape is wound outside the winding wire; each dehumidification assembly comprises a dehumidification inner cylinder and a shell, the inner cylinder is fixedly connected with a convex column, the convex column and the shell are integrally formed, an airflow channel is formed between the convex column and the shell, the shell is provided with a second through hole matched with the channel, one end of the channel is communicated with a negative pressure dehumidification mechanism, a moisture absorption layer is arranged outside the shell, and a heating pipe is fixedly connected in the moisture absorption layer; a one-way nozzle and a sliding movable dehumidification assembly are arranged in the inner cylinder, and the assembly sprays a dehumidification medium to the main cable through the nozzle. Compared with the prior art, dry gas can penetrate through the main cable, targeted drying is achieved, false dehumidification is avoided, and the situation that the service life of the main cable is shortened due to moisture is prevented.

The invention relates to a core for a fuel cell humidifier and the fuel cell humidifier. A core for humidifying a dry gas to be supplied to a fuel cell stack using a wet gas, and the core includes: an inner case having openings at both ends; a plurality of hollow fiber membranes, wherein the plurality of hollow fiber membranes are accommodated in the inner shell; a first fixing layer for fixing one side of the hollow fiber membrane; a second fixing layer for fixing the other side of the hollow fiber membrane; and a plurality of first coating portions attached to one side of each of the hollow fiber membranes and coupled to the first fixing layer so as to protrude from the first fixing layer toward the second fixing layer, each of the first coating portions is formed to have a lower hardness than the first fixing layer.

The utility model discloses an integrated heat exchanger suitable for frozen drying machine, including the casing, the casing is equipped with the outlet of drying gas, the inlet of water gas, the coolant outlet and the coolant inlet from top to bottom, the upper portion is equipped with the heat exchanger in the casing, still be equipped with the evaporimeter in the casing, still be equipped with the gas liquid separation chamber of gas in the bottom of casing, the evaporimeter is located heat exchanger below and communicates with the heat medium outlet of heat exchanger, the backflow channel of gas is established between evaporimeter and heat exchanger and the inside of casing, and the gas outlet of evaporimeter and the cold medium inlet of heat exchanger communicate with backflow channel. The utility model divides and sets up the upper and lower end in the casing with heat exchange and evaporation function, can simplify the structure setting in the casing, and the production cost is simplified, after setting evaporimeter below heat exchanger, can realize the step -by -step cooling of airflow from top to bottom, is favorable to the gathering of condensate in the bottom of casing and gas -water separation in the cooling process, thereby guaranteeing the drying effect of gas.

A system and method for adjusting the dew point temperature of a gas, relating to the field of fuel cells, to solve the problem of how to improve the efficiency of high and low dew point adjustment in a fuel cell test system; it includes a gas filtration unit, a flow control unit, a switching unit, a humidification unit, a mixing unit, and a temperature control unit; among them, the switching unit includes three gas paths: a dry gas branch, a wet gas branch, and a dry-wet switching branch, and the dry-wet switching branch can be flexibly switched between the dry gas branch and the wet gas branch; the present invention adjusts the dew point temperature of the gas entering the fuel cell stack by controlling the flow ratio of the dry gas and the gas entering the humidification tank, and realizes the rapid distribution of the flow rates of the dry gas and the wet gas in the fuel cell test system by using a three-way valve, improving the utilization rate of system components and reducing the occupied space size, greatly improving the use efficiency of the equipment and reducing the cost of the system.

This invention relates to an online maintenance device and method for leveling guide wheels in a rubber diaphragm-sealed dry gas holder. The online maintenance device for leveling guide wheels includes a vertical lifting device, a horizontal guide rail, a horizontal moving device, a power traction device, and a control system. The vertical lifting device consists of a first lifting device, a second lifting device, and a synchronous drive device. The horizontal moving device is mounted on the horizontal guide rail and consists of a moving trolley and suspended guide wheels. One end of the moving trolley is connected to the power traction device via a traction steel wire rope. This invention enables rapid online maintenance and replacement of leveling guide wheels without shutting down the gas holder; it significantly improves the maintenance efficiency of leveling guide wheels while eliminating energy waste, environmental pollution, and safety risks caused by gas holder shutdowns.

The utility model provides a humidifying tank and a breathing machine with the same, the humidifying tank comprises a tank body, the tank body is provided with a humidifying cavity, an air inlet path for dry air to flow in and an air outlet path for humidified air to flow out, the tank body comprises a tank body main body and a cover body, and the cover body comprises a cover body main body and a cover plate. An air inlet path and an air outlet path are defined by the cover plate and the cover main body; the reference plane where the cover plate is located has a first preset direction and a second preset direction which are perpendicular to each other, and a first projection of the first air inlet on the reference plane and a second projection of the second air outlet on the reference plane are sequentially arranged in the first preset direction; in the second preset direction, a third projection of the first air outlet on the datum plane and a fourth projection of the second air inlet on the datum plane are arranged at intervals with the first projection; in the first preset direction, the third projection and the fourth projection are both located between the first projection and the second projection. The humidifying tank solves the problem that a humidifying tank in the prior art is low in humidifying efficiency.

A moisture removal apparatus for a breathing circuit may include a breathing gas conduit configured to receive a flow of breathing gas having a first humidity level. The apparatus may include a dry gas conduit adjacent to at least a portion of the breathing gas conduit, the dry gas conduit configured to receive a flow of dry gas having a second humidity level lower than the first humidity level. The apparatus may also include a feeding conduit extending through at least a portion of the dry gas conduit, the feeding conduit configured to introduce the dry gas into the dry gas conduit. The apparatus may further include a moisture transmission pathway configured to enable transfer of moisture from the breathing gas to the dry gas based on the humidity differential.

The application belongs to the technical field of generators, and discloses an energy-saving generator set cylinder temperature difference power generation waste heat recovery device, which comprises a generator body, the bottom end of the generator body is fixedly connected with a bottom plate, the top end side wall of the bottom plate is fixedly connected with a control machine box, and a waste heat recovery part is arranged between the bottom plate and the generator body; through nitre powder dissolution heat absorption, cooling water body temperature sudden drop, cylinder cooling strengthening, cam control nitre putting and piston pressurization are triggered, no additional energy consumption, cooling water heat absorption gasification, water vapor is baffle stored by an inclined plate, dry gas is guided to a gas converter for secondary utilization, sponge pad adsorbs liquid water in water vapor, so that the dryness of the gas is ensured, the device realizes double innovation of nitre dissolution heat absorption strengthening cooling and water vapor waste heat gradient recovery, significantly improves generator waste heat utilization rate, the coupling of the cam, impeller and tray in the mechanical linkage design is realized, zero-power-consumption automatic operation is realized, and the device has high industrial application value.

The utility model relates to a constant weight measuring instrument which comprises a heat insulation and preservation container, a cooling layer, a bearing unit, a weighing unit, a transmission unit, an air supply unit and an exhaust unit, and a first cooling flow channel is arranged in the heat insulation and preservation container; the cooling layer is arranged outside the heat insulation container; dry gas or filtered air is introduced into the test cavity through the air supply unit, and high-temperature air in the test cavity is exhausted through the exhaust unit, so that the temperature in the test cavity is brought out, and the temperature of the test cavity is reduced; meanwhile, the testing cavity can be cooled through a cooling medium in a first cooling flow channel arranged in the heat insulation and preservation container; besides, the test cavity is further cooled through a cooling layer arranged outside the heat insulation and preservation container, so that the interior of the test cavity is rapidly cooled to a weighable temperature, and the weighing efficiency is improved; and through the cooperation of the transmission unit and the weighing unit, the weighing operation of the weighing unit is realized, and the weighing efficiency is further improved.

The utility model relates to the technical field of air supply equipment, in particular to a compressed air supply device for operating a vehicle air suspension system, which comprises a compressor, a water separation device, a first communicating pipe, a second communicating pipe and a dryer device. Wherein the compressor is provided with an exhaust end, and the water separation device and the dryer device are sequentially connected to the second communicating pipe in the air inflation direction of the air using unit. The water separation device is installed between the compressor and the dryer device, the water separation device is used for drying gas before the gas enters the dryer device, moisture entering the dryer device is reduced, the drying pressure of the dryer device is relieved, and therefore the service life of the dryer device is prolonged; moreover, through primary drying of the water separation device and secondary drying of the dryer device, the gas drying effect is improved, thorough gas dehumidification is guaranteed, and then smooth regulation and control of the vehicle air suspension device are guaranteed.

The invention relates to the technical field of osmic acid solution preparation, in particular to an osmic acid solution preparation device and a use method thereof, and solves the technical problems that in the prior art, when a highly toxic osmic acid ampoule bottle is manually treated, the exposure risk of an operator is high, and the dissolution speed of osmic acid crystals is low when the ampoule bottle is directly put into a ground bottle. The invention discloses an osmic acid solution preparation device and a use method thereof. The osmic acid solution preparation device comprises a glass shell, and a moving overturning and clamping assembly capable of clamping and automatically overturning an ampoule bottle, a bottle opening mechanism for breaking off the head of the ampoule bottle, a glass gas outlet pipe system for blowing dry gas into the bottle to transfer crystals and a cover closing mechanism for automatically closing a cover of a receiving bottle are arranged in the glass shell. The full-process automatic sealing operation of transferring the ampoule bottle filled with the osmic acid crystal from bottle opening, overturning and crystal purging to automatic cover closing of the ground bottle is realized, so that an operator is completely isolated from the highly toxic osmic acid crystal and steam thereof in the whole preparation process.

The utility model relates to a perineum dryer, belongs to the technical field of medical instruments, and solves the problems that in the prior art, gas produced by a dry gas production device is directly output towards a perineum area and a crissum area, and the temperature and the humidity of the dry gas output by the dry gas production device are unstable, so that a patient feels uncomfortable. And diseases may be caused seriously. The device comprises a mixing chamber, an output chamber and a crissum output tube, the mixing chamber and the output chamber are integrally formed; the mixing chamber is provided with an input end, and the input end is connected to the output end of the dry gas production device through a pipeline; the mixing chamber and the output chamber are separated through a first end face, and a first through hole is formed in the first end face. And the perianal output tube is communicated to the output chamber. The dry gas output by the dry gas production device is mixed by the mixing chamber, so that the specific stable temperature and humidity of the dry gas output by the output chamber are ensured.

The utility model discloses a storage device for feed additives, and relates to the technical field of storage devices. The drying device comprises a storage box, an air inlet pipe is arranged on one side of the storage box, a drying assembly is arranged in the air inlet pipe, a motor is arranged on the upper side of the storage box, and the output end of the motor is fixedly connected with a hollow pipe. By arranging the auger, feed additives on the lower portion in the storage box can be conveyed to the upper side of the filter plate, the filtered feed additives fall into the lower portion in the storage box again, by arranging the scraper, the scraper can smash the feed additives which are affected with damp and agglomerated on the filter plate when the hollow pipe rotates, and therefore the feed additives can be conveniently conveyed to the upper side of the filter plate. According to the feed additive drying device, by arranging the drying assembly, the damped and agglomerated part is dried, part of dried and heated air is conveyed into the hollow pipe, and along with rotation of the hollow pipe, dry gas is rotationally discharged through the through holes, so that the drying effect on the feed additive is improved.

The application discloses a kind of blast furnace top gas downcomer cleaning method and device, method includes the following steps: during blast furnace blowing-off, open the diffuser valve of blast furnace top and the valve on gravity dust collector, dry gas is passed into gas downcomer;Clean through hole is opened on communication pipe, communication pipe is communicated with gas downcomer;Close the valve on gravity dust collector, and stop dry gas into gas downcomer, and cleaning nozzle sprays high-pressure gas to the inner wall of gas downcomer and carries out blowing operation;Stop blowing operation, open the valve on gravity dust collector, and the adherent blown off from the inner wall of gas downcomer falls into gravity dust collector.In blowing operation before starting, the valve on gravity dust collector is closed, can avoid the adherent blown off by gravity dust collector and enter the bag system of blast furnace, when the valve on gravity dust collector is opened, the adherent accumulated in gas downcomer can fall into the bottom of gravity dust collector under the action of pressure and gravity.

The present invention relates to a cartridge of a humidifier for a fuel cell for humidifying dry gas supplied from the outside by using wet gas discharged from a fuel cell stack, and a humidifier for a fuel cell, the cartridge including: an inner case having openings at each end thereof and containing a plurality of hollow fiber membranes; a gas inlet and a gas outlet formed in the inner case; and an adjustment cover movably coupled to the inner case, and adjusting at least one of an inflow area through which the wet gas or the dry gas flows through the gas inlet, and an outflow area through which the wet gas or the dry gas flows out through the gas outlet.

The invention discloses a cold core box core making process, and belongs to the technical field of sand core casting. Comprising the following steps of 1, sand mixing, wherein crude sand and resin are mixed according to a set proportion, and cold core sand is formed; 2, core shooting, wherein cold core sand is shot into a core box through a core shooting machine and is compacted; 3, blowing and catalyzing, namely blowing gasified triethylamine into a core box to trigger rapid hardening by taking dry gas as a carrier; and 4, gas cleaning: removing residual triethylamine by using carrier gas. A traditional cold core box process is improved, the casting mold core of the automobile differential mechanism which is excellent in performance and meets the use requirement can be prepared, and the casting success rate is obviously increased.

To enable prompt start of suitable dew point measurement upon restarting a dehumidifier.SOLUTION: A method of operating a dehumidifying device for dehumidifying hydrogen gas produced by a hydrogen production device, the dehumidifying device including a dehumidifier, a discharge line for discharging hydrogen gas dehumidified by the dehumidifier, a dew point measurement line connected to the discharge line, a dew point meter provided on the dew point measurement line, and an inlet valve and an outlet valve provided on respective sides of the dew point meter on the dew point measurement line, the method comprising: a stop step of stopping discharge of the hydrogen gas from the dehumidifier to the discharge line; and a maintaining step of maintaining, when the discharge of the hydrogen gas from the dehumidifier to the discharge line is stopped, a state in which a dew point meter installation section including at least an installation position of the dew point meter among the dew point measurement line is filled with dry gas.SELECTED DRAWING: Figure 1

The invention discloses an extremely-low-humidity plateau environment test box, an environment control method thereof, electronic equipment and a storage medium. The test box comprises a pressure-bearing test box body, a humidity sensor, a vacuum system, a humidifier, a dry gas supply system, a heating system and a refrigerating system. The humidity sensor is used for detecting the humidity in the pressure-bearing test box body; the vacuum system is used for vacuumizing the interior based on system parameters, so that the vacuum degree of the interior meets test requirements; the humidifier is used for humidifying the interior of the box body when the humidity is lower than the test requirement, so that the humidity meets the test requirement; the dry air supply system is used for inputting dry air into the box body; the heating system is used for heating internal air; and the refrigerating system is used for cooling the internal air. The vacuum system, the humidifier, the dry gas supply system, the heater and the refrigerating system work cooperatively, and the temperature, the pressure and the humidity in the pressure-bearing test box body can be adjusted, so that the pressure-bearing test box body meets the test requirements on equipment in an extremely-low-humidity plateau environment.

The utility model relates to the technical field of lead frame production, in particular to a lead frame core material surface cleaning and drying machine which comprises a drying cylinder, a mounting seat and a mounting box, an air outlet is fixedly formed in one side of the drying cylinder, and a door plate is movably mounted at the front end of the drying cylinder; according to the lead frame drying device, a lead frame needing to be dried is placed in the containing box, the containing box is installed on the inner side of the installation box in a sliding mode, the installation box is placed in the drying cylinder, dry gas can be introduced into the drying cylinder through the air inlet pipe, and the introduced gas can be guided to the drying openings towards the two sides through the flow dividing pipes; the drying opening part is used for drying, lifting and spraying to dry the mounting box and the placing box, the corrugated pipe can be conveniently pulled up and contracted in the up-and-down telescopic process of the drying opening, and drying gas can be more conveniently introduced into the drying opening in the using process.

A fuel cell humidifier with purification function includes an interconnected humidification component and a purification component. The humidification component contains first and second partitions and multiple hollow fiber membrane tubes. Dry air exchanges heat and moisture with the humid air inside the fiber membrane tubes and is then discharged through the exhaust port of the detection housing. The purification component consists of a supporting housing, a threaded lifting platform, and a quickly replaceable filter element. A handle drives the lifting platform to slide up and down, achieving sealing, locking, and removal of the filter element. The air inlet pipe is threadedly connected to the filter element, ensuring that the air undergoes oil mist adsorption and ultra-fine filtration before flowing into the element. A sensor built into the detection housing monitors the impurity concentration in real time and prompts for replacement. By adding a secondary purification and sealing device to the external filtration system, a clean and uniformly humidified air source is provided for the fuel cell, simplifying the maintenance process and improving system stability and reliability.

The application discloses a dry gas deep desulfurization process. The process comprises the following steps: (1) removing hydrogen sulfide from refinery dry gas through a first-stage amine liquid absorption tower; (2) removing organic sulfur from tail gas of the first-stage amine liquid absorption tower in a low-temperature absorption tower; (3) sequentially exchanging heat between the absorption tail gas and raw dry gas, and between the absorption tail gas and hydrolysis tail gas, and then heating the absorption tail gas, and then inputting the absorption tail gas into a hydrolysis reactor to convert carbonyl sulfur into hydrogen sulfide; and (4) inputting the hydrolysis tail gas into a second-stage amine liquid absorption tower, and countercurrently absorbing the hydrolysis tail gas with lean amine liquid in the tower to remove hydrogen sulfide in the dry gas. The application can purify and remove sulfides in the dry gas, reduce the content of organic sulfur and hydrogen sulfide in the gas, reduce the content of SO2 in flue gas discharged from a heating furnace of each subsequent device, and ensure safe, environmentally-friendly and efficient and stable operation of the heating furnace of the whole plant.

The utility model provides a dry gas generating device which comprises a buffer tank connected with a compressor, gas to be dried is introduced into an inlet of the buffer tank, and compressed gas is output from an outlet of the buffer tank; the first dewatering and filtering assembly is used for receiving the compressed gas output by the buffer tank, performing primary filtering on moisture in the compressed gas and outputting the compressed gas; the molecular sieve column group is used for receiving the primarily filtered gas output by the first dewatering and filtering assembly, absorbing moisture in the primarily filtered gas and outputting dehumidified gas; and the second dewatering and filtering assembly is used for receiving the dehumidified gas, performing secondary filtering on moisture in the dehumidified gas and then outputting dry gas, and the dry gas is exhausted through an exhaust outlet. According to the scheme, the dry gas can be continuously provided on line, continuous and stable operation can be achieved, and the convenience of dry gas supply is improved.

The application discloses a high-efficiency fountain pen nib drying cabinet, which comprises a cabinet body, a main body space is arranged in the cabinet body, a preliminary treatment assembly is arranged on one side of the main body space, a drying assembly is arranged on the other side of the main body space, a plurality of nibs are arranged on the preliminary treatment assembly and the drying assembly, and the drying assembly comprises a dryer, a rotating chain, a fixed rack, a bearing roller, a rotating gear and a blowing pipe. The water on the outer surface of the nib is continuously wiped by the water absorption material, so that the water stains and other residues on the outer surface of the nib are preliminarily removed, the subsequent drying treatment is facilitated, the drying efficiency is improved, the drying of the nib can conduct gas to the inside of the nib, the inside of the nib can receive the flow of dry gas, water vapor and water drops and the like are taken away, meanwhile, the outer surface of the nib rotates to receive the drying of the dryer, the drying has no dead angle, and the effect is good.

The utility model discloses a drying box and a drying device, the drying box comprises a box body and a roller part arranged on the box body, the roller part comprises a roller shaft, a roller body and a roller sliding cover, and the roller body is provided with a first opening; the roller sliding cover can rotate along the roller shaft and seal or open the first opening, and when the roller sliding cover seals the first opening, the roller sliding cover and the roller body form transmission connection; and when the roller sliding cover opens the first opening, the roller sliding cover is separated from the roller body in transmission connection. In this way, when the first opening is opened and closed through rotation of the roller sliding cover and loading and unloading of materials are achieved, the roller body can be driven to rotate through the roller sliding cover during closing, the to-be-dried materials in the roller body can be fully mixed with drying gas, and therefore the drying effect can be enhanced, a driving structure does not need to be additionally arranged, and the drying efficiency is improved. And the cost is also saved.

The invention discloses a hydrogen internal combustion engine crankcase ventilation system and a crankcase ventilation control method, and relates to the field of hydrogen internal combustion engines, the hydrogen internal combustion engine crankcase ventilation system comprises a first ventilation pipeline communicated with a supercharger and a first end of a four-way valve, a second ventilation pipeline communicated with an air filter and a second end of the four-way valve, and a third ventilation pipeline communicated with an air storage tank and a third end of the four-way valve, when the water content of the crankcase is larger than the upper limit threshold value of the water content, the opening degree of a first flow adjusting valve in the first ventilation pipeline is controlled to be larger than the opening degree of a third flow adjusting valve in the third ventilation pipeline, and the opening degree of the third flow adjusting valve is controlled to be larger than the opening degree of a second flow adjusting valve in the second ventilation pipeline. Based on the size relation of the opening degrees of the flow regulating valves, the proportion of the dry gas output by the supercharger and the gas storage tank in the mixed gas when the water content of the crankcase is larger than the upper limit threshold value of the water content is increased, the flow speed of the mixed gas is increased, and the inhibition effect on hydrogen detonation and engine oil emulsification phenomena is improved.