8228results about "Container discharging methods" patented technology

The invention relates to the technical field of low-temperature storage tank installation, in particular to a low-temperature storage tank heat insulation module installation construction method which comprises the steps that expansion bolts are implanted into preset point positions of the inner wall of a low-temperature storage tank, inner wall morphology data are obtained through three-dimensional laser scanning, and a point cloud model is generated. A BIM system is used for constructing a three-dimensional model of the installation datum plane, the theoretical leveling height of each expansion bolt point position is calculated, and a leveling parameter instruction set is generated. And a servo motor of the bolt tightening equipment is driven to rotate the ball nut, so that the leveling gasket moves to the target height. And a press-fitting path is generated, a press-fitting mechanical arm is controlled to align the preformed hole of the heat insulation module to the screw part of the expansion bolt and press-fit, and the surface of the heat insulation module is fully attached to the surface of the leveling gasket. And a fastening nut is installed on the screw part of the expansion bolt, three-dimensional deviation analysis is carried out, and iterative correction is carried out. Compared with the prior art, the effects of shortening the construction period, improving the leveling precision, reducing stress concentration, ensuring long-term stability and the like are achieved.

The invention discloses a liquid cargo containment system and a maintenance method, and belongs to the technical field of natural gas storage, the liquid cargo containment system comprises a main shielding layer, a secondary shielding layer, an insulating layer and a detection pipeline, one end of the detection pipeline is connected with a gas input pipeline, the other end of the detection pipeline is provided with a first branch pipe and a second branch pipe, and the first branch pipe extends between the main shielding layer and the secondary shielding layer; the first branch pipe extends into the insulating layer, the second branch pipe extends into the insulating layer, a first temperature monitoring unit is arranged in the first branch pipe, a second temperature monitoring unit is arranged in the second branch pipe, and a first pressure difference detection unit is further arranged between the first branch pipe and the second branch pipe. Through dual monitoring of the peripheral temperature and pressure of the thin film tank, accurate monitoring of the liquid cargo leakage condition is ensured, and the problem that the liquid cargo leakage condition is misreported due to pressure fluctuation caused by other factors in a conventional monitoring mode is solved.

The storage tank comprises a wall and an internal containing space defined by the wall, the wall comprises a first layer assembly and a second layer assembly which are arranged in a stacked mode, the first layer assembly is located on the inner side of the second layer assembly, the first layer assembly comprises a first shielding layer and a first heat insulation module located on the outer side of the first shielding layer, and the second layer assembly comprises a second shielding layer and a second heat insulation module located on the outer side of the second shielding layer. The second layer assembly comprises a second shielding layer directly connected with the first heat insulation module and a second heat insulation module located on the outer side of the second shielding layer, the first shielding layer and the second shielding layer are both made of metal corrugated plates, and the metal corrugated plates are provided with crisscrossed corrugations. According to the storage tank, an invar plate is not adopted, the overall production cost is reduced, the problem of difficult supply is solved, the two layers of corrugated metal plates have good tensile strength, pressure caused by contents and airflow to the wall can be compensated, and the storage tank can keep good performance for a long time.

The invention discloses an underground gas storage prestress lining structure and a construction method, and relates to the technical field of underground gas storage, the underground gas storage prestress lining structure comprises a lining layer formed by concrete pouring and internally provided with prestress steel bars; the sealing layer is arranged on the inner side of the lining layer and defines a gas storage chamber; the sliding layer is arranged between the lining layer and the sealing layer. The arrangement of the prestressed reinforcements can counteract part of internal pressure of the gas storage, so that the problem of concrete cracking is relieved. The lining layer is divided into the first lining layer and the second lining layer, the tensioning notch is reserved in the bottom of the first lining layer and provides sufficient tensioning space for the prestressed steel bars, the tensioning effect of the prestressed steel bars is ensured, the second lining layer is formed in the tensioning notch in a pouring mode after the prestressed steel bars are tensioned, and the integrity of the lining layer is ensured. After the sealing layer is constructed, grouting is conducted on the gap between the lining layer and the sliding layer, it is guaranteed that grouting is compact and complete, stress concentration is reduced, and the problem of concrete cracking is further relieved.

A natural gas filling device reliable in sealing is disclosed. The device is characterized in that the device comprises a liquid filling gun, a liquid receiving component matched with the liquid filling gun and used for filling a gas cylinder with liquid, and a gas returning component communicated with the gas outlet of the gas cylinder; the liquid filling gun is provided with a first outer shell, a first rotating fastener disposed in the first outer shell and connected to the first outer shell and the inner wall of which is provided with a symmetrical spiral groove, a first valve body between the first rotating fastener and the first shell, and a first valve core disposed in the first valve body and containing a liquid inlet and a liquid outlet; and the liquid receiving component is provided with a first shell, wherein the head of the first shell extends into the first rotating fastener and is in sealing match with the tail part of the first valve body, and the periphery of the first shell is provided with a first pivot pin engaged with the spiral groove in the first rotating fastener. The device is convenient in maintenance, replacement and operation of quick-wear parts and convenient to use. The device can be used for other low-temperature liquid media besides LNG and is simple in structure, low in cost, convenient in operation and reliable in sealing.

The embodiment of the invention discloses a hydrogen refueling station hydrogen leakage detection method and device and electronic equipment. The method comprises the steps that in response to the fact that the actual flow difference value between upstream and downstream pipelines in the hydrogen refueling station is larger than a flow difference threshold value, flow data of all the pipelines in the hydrogen refueling station after the pipelines are connected into leakage detection branches are detected; and in response to the fact that the flow data corresponding to the first pipeline meets the hydrogen leakage condition, determining a target area, in which the local amplification image corresponding to the first pipeline changes to a target color within a first preset duration, as a hydrogen leakage position. In addition, the method further comprises the step of determining the minimum pipeline path so as to isolate the pipeline section corresponding to the minimum pipeline path. According to the embodiment of the invention, even if the hydrogen leakage amount is small at the initial stage of hydrogen leakage, and no matter where the leakage position is, the leakage pipeline and the specific leakage position can be determined in time, so that the leakage pipeline can be isolated in time at the initial stage of leakage, and potential safety hazards are reduced.

A nozzle includes a nozzle bayonet with a warm seal positioned at a distal end and a nose seal positioned at a proximal end so that a distal passage is defined between the warm and nose seals. The nozzle also includes a nozzle poppet valve. Purge and vent lines are in fluid communication with the distal passage. A receptacle includes a receptacle poppet valve, a receptacle inner tube and a receptacle outer tube with a receptacle insulation space defined therebetween. A coupling space is defined between an outer casing and the receptacle outer tube. The receptacle coupling space receives the nozzle bayonet. The receptacle sequentially engages the warm seal and the nose seal of the nozzle during insertion of the nozzle bayonet into the receptacle coupling space with the nozzle and receptacle poppets engaging to open the nozzle and receptacle poppet valves when the nozzle bayonet is fully inserted into the receptacle coupling space.

The invention discloses a liquefied natural gas (LNG) early warning system and method for dynamically monitoring an LNG ship, and the method comprises the steps: collecting the output amount, cabin pressure, environment temperature and pump operation parameters in real time, combining a multi-factor correction model to dynamically calculate the actual evaporation rate, and reversely setting an allowable evaporation rate threshold according to the maximum capability of a BOG processing system; the evaporation rate is ensured to be within a safe range through a grading alarm mechanism and safety regulation and control measures; the problem that in the prior art, static testing cannot reflect evaporation rate changes in real time is solved. Liquefied natural gas whole life cycle monitoring and performance degradation early warning of the LNG ship are achieved.

The invention relates to an industrial gas tank storage place early warning method and system. The method comprises the following steps: acquiring image time sequence data at least representing temperature field distribution of a target monitoring area, generating a temperature image sequence, determining area temperature change characteristics and tank body surface reflection characteristics in the area, and generating reflection area probability distribution of the target monitoring area to determine initial gas leakage probability data of the target monitoring area; generating baseline feature data at least representing background thermal field distribution of the target monitoring area; and performing association processing on the initial gas leakage probability data and the baseline feature data to generate fusion time sequence features and determine a gas leakage diffusion weight so as to correct the initial gas leakage probability data to obtain corrected gas leakage probability data. By adopting the method, the gas leakage probability can be accurately judged by comprehensively utilizing temperature field time sequence information, tank body surface reflection characteristics and background thermal field distribution characteristics under the condition of a complex background thermal field, so that early warning is realized.

The invention belongs to the technical field of solid hydrogen storage, and provides a solid alloy hydrogen storage device with high heat transfer performance and application thereof, and is characterized in that the device comprises a hydrogen storage container, a hydrogen storage alloy and a heat exchange structure assembly; a fin structure and a layering partition plate are arranged in the hydrogen storage container, by optimizing the layering partition plate and the fin structure, displacement and agglomeration of hydrogen storage alloy in a moving or vibrating environment are effectively prevented, the mass transfer and heat transfer performance in the hydrogen storage tank is remarkably improved, hydrogen and heat can be rapidly transferred to the hydrogen storage alloy, and the hydrogen storage effect is improved. Therefore, the hydrogen absorption and desorption efficiency is improved. The method is suitable for AB2 type alloys, AB5 type alloys, BCC type alloys, superlattice hydrogen storage alloys and the like, the hydrogen absorption and desorption process can be efficiently completed at a certain temperature and pressure, and the high efficiency and stability of the hydrogen absorption and desorption process are ensured. And the catalyst can be widely applied to various scenes such as traffic, hydrogen refueling stations, industrial processes and hydrogen energy storage.

The invention discloses an IV-type hydrogen cylinder stress monitoring system, a signal processing method thereof and an IV-type hydrogen cylinder, and relates to the technical field of manufacturing of high-pressure hydrogen storage equipment. The carbon fiber winding layer stress monitoring structure and the liner stress monitoring structure are respectively arranged in a strain generation area of a carbon fiber winding layer and a strain generation area of the outer surface of a plastic liner in the IV-type hydrogen cylinder, so that the surface stress of the liner of the gas cylinder and the stress between carbon fiber winding layers can be dynamically monitored in real time; therefore, the IV-type hydrogen cylinder has the function of dynamically monitoring the stress between the carbon fiber winding layers and the stress of the inner container in real time. According to the signal processing method of the IV-type hydrogen cylinder stress monitoring system, high-frequency noise signals can be effectively filtered, low and medium-frequency signals can be reserved, and the surface stress of a carbon fiber winding layer and a plastic inner container can be accurately measured. The IV-type hydrogen cylinder is provided with the IV-type hydrogen cylinder stress monitoring system and has the function of dynamically monitoring the stress between carbon fiber winding layers and the stress of an inner container in real time.

The invention belongs to the field of hydrogen filling, and relates to an automatic hydrogen filling system for a hydrogenation mother station, which comprises a hydrogen purification device, a plurality of hydrogen compressors, a plurality of filling main pipes, a plurality of branch pipelines, a plurality of emptying pipelines, a plurality of filling hoses and a control system, an outlet of each hydrogen compressor is connected with a compressor outlet pressure gauge and a check valve, each branch pipeline is provided with a branch stop valve, and each emptying pipeline is provided with an emptying adjusting valve. And the control system is in signal connection with the compressor outlet pressure gauge, the branch stop valve, the emptying regulating valve and a long pipe vehicle pressure gauge arranged on the long pipe vehicle, and is used for automatically executing the actions of boosting, depressurizing, filling and stopping filling according to the pressure difference. Compressor pressure, filling header pipe pressure and long pipe vehicle pressure cooperate with one another, full automation and full flow of filling boosting and depressurization are achieved, and the working efficiency is improved.

Disclosed is a method of fastening a cap of a container, the method including: specifying a screw thread engagement point of a cap and a neck ring of a container; and aligning the engagement point with a fastening start position of the cap and fastening the cap to the neck ring, in which the specifying of the engagement point includes detecting the engagement point by rotating the cap in a reverse direction in a state where the cap is seated on the neck ring.

The invention discloses a hydrogen storage and transportation system under a wind-solar hydrogen production project and a control method. The hydrogen storage and transportation system at least comprises a hydrogen flowing pipeline and a water flowing pipeline, the hydrogen flowing pipeline at least comprises a first compressor, a low-pressure hydrogen storage container, a third compressor and a second heat exchanger which are connected in sequence; the first compressor is further sequentially connected with a second compressor, a high-pressure hydrogen storage tank, an eighth valve connected with the pressure reducing valve in parallel and a third compressor; the second compressor, the high-pressure hydrogen storage tank and the low-pressure hydrogen storage container are connected in parallel; the high-pressure hydrogen storage tank is connected with the pressure reducing valve through a ninth valve connected with the third compressor in parallel; the first compressor pressure is smaller than the third compressor pressure and smaller than the second compressor pressure; the water flow pipeline at least comprises a first heat exchanger, a first water pump and a second water pump which are sequentially arranged in the water flow direction. The second water pump is in fluid communication with the second heat exchanger; the first heat exchanger is arranged on the cooling water pipeline corresponding to the compressor. The multi-aspect requirements of stable output, efficient storage, energy conservation, environmental protection and the like can be met.

The invention discloses a corrugated plate for a low-temperature liquid cargo system, a shielding layer and the low-temperature liquid cargo system. The cryogenic liquid cargo system may be a storage tank or container for storing cryogenic liquid, such as liquefied natural gas. The corrugated plate comprises a corrugated plate plane layer and corrugations formed on the corrugated plate plane layer, the corrugations comprise first corrugations and second corrugations intersecting with the first corrugations, and each of the first corrugations and the second corrugations is provided with a protruding part, a concave part and a twisting part in the longitudinal extending direction of the first corrugations and the second corrugations. The convex part and the concave part are connected together through the torsion part in the longitudinal extending direction, the convex part protrudes towards the interior of the low-temperature liquid cargo system relative to the corrugated plate plane layer, and the concave part protrudes away from the interior of the low-temperature liquid cargo system relative to the corrugated plate plane layer. According to the scheme, the convex-concave matching structure is arranged in the longitudinal extension direction of the corrugations, so that the effect of blocking gas convection in the corrugated plate can be effectively achieved, evaporation of LNG in the storage tank can be effectively reduced, and then damage to goods is reduced.

A refuse vehicle includes a chassis. The chassis includes a right frame member and a left frame member spaced apart in a lateral direction and extending lengthwise in a longitudinal direction, the right frame member being separate from the left frame member. The refuse vehicle further includes a body supported by the right frame member and the left frame member, the body defining a refuse compartment, and a hydrogen power system including a plurality of fuel cells longitudinally disposed along the chassis, positioned between the right frame member and the left frame member. The hydrogen power system may also include plurality of fuel pods for providing hydrogen to the fuel cells. The hydrogen power system can be packaged in modular pods on various locations of the refuse vehicle. The hydrogen power system can work in conjunction with other power sources or fuels (e.g., electric batteries, ultra-capacitors, diesel ICE, CNG, etc.).

The present disclosure provides systems and methods for monitoring for a stuck valve. Various temperature and pressure sensors are used to monitor for a stuck valve in one or more tanks of hydrogen gas.

Disclosed is a collar for mounting on a top portion of a pressurized tank. The collar comprises: a body, a fastening system and a rotatable lid disposed on the collar. Further provided is a collar with a window cut-out for viewing tank data and a regulator mounting clip for securing a regulator of the tank in place during use.

The invention relates to a pressure vessel (1), comprising a vessel body (3), wherein at an upper end of the vessel body (3) an end region (2) is formed in one piece with the vessel body (3), which has an opening (O), and a fastening structure (9) for a valve (6) formed on the inside of a wall (2.1) surrounding the opening (O) of the end region (2). According to the invention, two outflow openings (SO) are formed opposite each other in the wall (2.1) surrounding the opening (O) of the end region (2).

The invention discloses a multifunctional integrated ship LNG filling device, and relates to the technical field of filling devices. The device comprises a device body, a storage tank is fixed to the top of the device body, a filling pump is fixed to the top of the storage tank, a conveying pipe set is fixedly connected to the liquid outlet end of the filling pump, a filling head is fixed to the end, away from the filling pump, of the conveying pipe set, a stabilizing device is arranged at the filling head, and the stabilizing device comprises a hollow column. The hollow column penetrates through and is fixed to the top of the filling head, and a groove is formed in the outer wall of the lower portion of the hollow column. Through the arrangement of the stabilizing device, after the filling head is inserted into the filling pipe of the ship, the screw rod, the threaded ring, the plug disc and the filling head are matched to drive the clamping rod to stabilize the filling head in the filling pipe of the ship, so that the phenomenon that the filling head is loosened or falls off due to vibration or external force influence in the filling process is avoided, and the stability of filling operation is ensured.

The invention belongs to the technical field of hydrogen storage equipment, and discloses vertical dividing wall type solid hydrogen storage equipment which comprises a high-temperature steam conveying pipe, one end of the high-temperature steam conveying pipe is connected with a plurality of steam auxiliary pipes, and the other end of each steam auxiliary pipe is connected with a solid hydrogen storage tank through a steam pipe connector. The top of each solid hydrogen storage tank is connected to a hydrogen pipe through a hydrogen charging and discharging port, a steam layer is further arranged at the top of each solid hydrogen storage tank, and a steam output pipe is connected to the bottom of each steam layer. High-temperature steam generated by a power plant is mainly used for heating the solid hydrogen storage tank; the solid hydrogen storage material is preferably magnesium-based solid hydrogen storage alloy, the interior of the solid hydrogen storage tank has an efficient heat transfer effect, the adopted spiral fins and the solid hydrogen storage tank are well fixed, and the spiral fins are beneficial to the heat transfer and mass transfer process of the solid hydrogen storage material; and the inner pipe, the sprue spreader and the dividing wall layer are matched to heat the liner internally and externally at the same time, so that the hydrogen absorption and desorption efficiency of the solid hydrogen storage tank is improved.

This disclosure includes compressed-gas fuel system cabinets, each having a frame and a cover coupled together via fasteners to support and contain compressed-gas fuel system components, such as fuel pressure vessels. The frame, cover, and / or fasteners can be configured to facilitate assembly of the cabinet—in terms of safety and / or speed—and / or access to or servicing of the components contained within the cabinet.

The invention discloses a phosphorane mixed gas filling method, and relates to the technical field of mixed gases, the phosphorane mixed gas filling method comprises instrument pretreatment, step-by-step filling, post-vacuum treatment, quality detection and safety monitoring, and the phosphorane mixed gas filling method has the advantages that a mixed accelerant is added into a filling pipeline in the phosphorane and argon filling process, so that the filling efficiency is improved; by providing a large number of active sites and unique gas diffusion channels, uniform mixing of phosphorane and argon can be accelerated, the uniformity and accuracy of mixed gas matching are improved, in the process of action of an accelerant and gas, argon molecules are fully contacted and collided with dissociated and adsorbed phosphorus atoms under the guidance of a special structure of a nano-porous material, and the phosphorus atoms are separated and adsorbed. The mixed accelerant is added to promote rapid and uniform mixing of the phosphorus and the alkane, stable and accurate-proportion phosphorus and alkane mixed gas is formed, and in the whole process, the mixed accelerant continuously plays a role, so that the uniform mixing efficiency of the mixed gas in the filling process is greatly improved compared with a traditional mode.

The utility model discloses a hydrogen storage buffer filtering tank, and relates to the technical field of filtering tanks. The filtering tank comprises a base, the inner wall of the base is fixedly connected with a filtering tank body, the top of the filtering tank body is fixedly connected with an air inlet pipe, the bottom of the filtering tank body is fixedly connected with an air outlet pipe, the filtering tank further comprises an anti-blocking device, an anti-adhesion device and an adsorption device, the anti-blocking device is arranged on the top of the filtering tank body, and the anti-adhesion device is arranged on the bottom of the filtering tank body. The anti-blocking device comprises a motor, and the bottom of the motor is fixedly connected to the top of the filtering tank body. Through the arrangement of the anti-blocking device, the filter screen, the rotating shaft, the L-shaped scraping block, the rotating rod, the abutting rod, the elastic telescopic rod, the ring block and the fixing block are matched, the elastic telescopic rod drives the ring block to reset, the ring block drives the knocking block to knock the filter screen through the fixing block, the filter screen vibrates, and particles are loosened and separated; and therefore, the paper can be scraped more easily.

The invention discloses an IV-type hydrogen storage cylinder system suitable for an unmanned aerial vehicle, and relates to the technical field of hydrogen storage cylinder installation. The IV-type hydrogen storage cylinder system suitable for the unmanned aerial vehicle comprises a shell, an IV-type hydrogen storage cylinder is placed in the shell, and an opening is formed in one end of the shell; the top cover is fixed to the opening of the shell so that the IV-type hydrogen storage cylinder can be placed to be separated from the opening. And the supplementing and resetting assembly is arranged between the top cover and the IV-type hydrogen storage cylinder. The supplementing and resetting assembly is arranged between the top cover and the IV-type hydrogen storage cylinder, hard collision between the top cover and the IV-type hydrogen storage cylinder is avoided, when the IV-type hydrogen storage cylinder expands, the supplementing and resetting assembly is compressed, and when the IV-type hydrogen storage cylinder contracts, the supplementing and resetting assembly is stretched, so that the top cover and the IV-type hydrogen storage cylinder are effectively protected. Therefore, the supplement reset assembly always provides supporting force for the position between the top cover and the IV-type hydrogen storage cylinder, looseness of the IV-type hydrogen storage cylinder during fixing is avoided, and the fixing stability of the IV-type hydrogen storage cylinder is improved.

An outlet assembly for hybrid pressure and flow regulation includes a first orifice of a first size, a second orifice of a second size that is larger than the first size, and a mechanism that automatically moves the first orifice between a first position, a second position, and a third position. When the first orifice is in the first position, the flow of gas passes through the first orifice, which regulates a flow rate of the flow of gas through the second orifice. When the first orifice is in the second position, the flow of gas primarily bypasses the first orifice and flows through the second orifice with a first specific flow rate. When the first orifice is in the third position, the flow of gas primarily bypasses the first orifice and flows through the second orifice with a second specific flow rate.

The utility model discloses a high-pressure inflation pipeline structure wound on an IV-type hydrogen storage cylinder inner container, which comprises a nitrogen cylinder, the output end of the nitrogen cylinder is sequentially connected with a high-pressure reducing valve, a one-way valve, a low-pressure reducing valve, a pressure release valve, a pressure gauge and a stop valve through a high-pressure connecting pipe, and the stop valve is connected with the IV-type hydrogen storage cylinder inner container. The high-pressure inflation pipeline is provided with the high-pressure reducing valve, the one-way valve, the low-pressure reducing valve, the pressure release valve, the pressure gauge and the stop valve, so that the functions of monitoring, adjusting and pressure release of the internal pressure during winding of the IV-type hydrogen storage cylinder liner can be realized, and the problem that the IV-type hydrogen storage cylinder liner is expanded and broken due to overlarge pressure or insufficient support due to oversmall pressure during winding and inflation is avoided; and the normal use and the use safety of the IV-type hydrogen storage bottle liner winding are ensured.

Disclosed in the present disclosure is a multi-position controlled airway valve, including a venting control member; a valve body, provided with a fluid channel and a venting channel, in which the venting control member is provided on the venting channel; a valve core assembly, mounted in the fluid channel, controlling the fluid channel to switch between a connected state and a sealed state, wherein the valve core assembly in a filling mode controls the fluid channel to be in the connected state and abuts against the venting control member so as to keep the venting channel to be in a ventilated state. Disclosed is also a refilling device applied with the multi-position controlled airway valve and a refilling system applied with the refilling device, so as to achieve the objective of removing air and residual gases promptly when refilling with new fuels.

The invention discloses a low-temperature thin film storage tank pump tower base device, and relates to the field of thin film tanks, the low-temperature thin film storage tank pump tower base device comprises a limiting device and a main support, a plurality of secondary supports are arranged on the main support, the limiting device is arranged on the plurality of secondary supports, and a main anchoring plate and a secondary anchoring plate are arranged on the secondary supports; the peripheral sides of the main anchoring plate and the secondary anchoring plate are connected with a main corrugated plate and a secondary corrugated plate respectively. The height difference after the four supporting seats are fixed is reduced, the fixing firmness of the primary shielding layer and the secondary shielding layer is improved, damage to the supporting seats is reduced, and the connecting firmness of the supporting seats is improved.

The invention discloses a high-pressure gas cylinder pressure stabilizing device used in a continuous high-temperature curing furnace. The high-pressure gas cylinder pressure stabilizing device comprises a mounting bracket, a pressing module and an inflation butt joint module, the pressing module comprises a top mounting seat and a pressing block; the top mounting seat is mounted on the mounting bracket through a top displacement adjusting mechanism; the pressing block can be mounted on the top mounting seat through a vertical displacement adjusting mechanism; the inflation butt joint module comprises a side mounting seat and an air tap male head; the side mounting seat is mounted on the mounting bracket through a side displacement adjusting mechanism; the air tap male head is mounted on the side mounting seat through an axial displacement adjusting mechanism; a tail inflation rod is fixed to the tail of the air tap male head, and a rotary connector capable of being connected with the air inlet end of the inflation air path is installed at the tail of the tail inflation rod. The device has the advantages of being convenient to use, simple and compact in structure, capable of being accurately in butt joint with the inflation nozzle on the gas cylinder and the like.