阅读说明：本技术 气瓶充气控制装置 (Gas cylinder inflation control device ) 是由 张平 靳巍峰 李媛媛 刘娟 刘晓丹 王晨希 田晓婕 梁本栋 李云慧 于 2021-02-02 设计创作，主要内容包括：本发明公开了一种气瓶充气控制装置,包括作为气源用以供气的气罐和气瓶,气罐的输出端充气管经过气泵增压后,再经过充气接头连接气瓶,还包括冷却机构,从所述充气管引出供压总管用以对冷却机构做功,冷却机构输出端蒸发器通过导热部件连接所述气瓶,由控制器根据气瓶内充气进度控制气泵功率提升直至充满气瓶后停止。本发明能够随着气瓶因充气压力增大升温而自动增大制冷功率,在充气初期制冷系统几乎不参与制冷做功,而在充气后期因气瓶内温度升高又能自动进行制冷降温,能随着气瓶温度变化而自动改变制冷程度。(The invention discloses a gas cylinder inflation control device, which comprises a gas cylinder and a gas cylinder which are used as gas sources for supplying gas, wherein an inflation tube at the output end of the gas cylinder is connected with the gas cylinder through an inflation joint after being pressurized by a gas pump, the gas cylinder also comprises a cooling mechanism, a pressure supply main pipe is led out from the inflation tube for doing work on the cooling mechanism, an evaporator at the output end of the cooling mechanism is connected with the gas cylinder through a heat conduction part, and the controller controls the power of the gas pump to be increased according to the inflation progress in the gas cylinder until the gas cylinder is filled. The invention can automatically increase the refrigeration power along with the temperature rise of the gas cylinder due to the increase of the inflation pressure, the refrigeration system hardly participates in refrigeration work at the initial inflation stage, and can automatically perform refrigeration and temperature reduction along with the temperature rise in the gas cylinder at the later inflation stage, thereby automatically changing the refrigeration degree along with the temperature change of the gas cylinder.)

1. The utility model provides a gas cylinder inflation control device, includes gas pitcher (1) and gas cylinder (2) that are used for the air feed as the air supply, its characterized in that, output gas tube (11) of gas pitcher (1) are through the air pump pressure boost after, connect gas cylinder (2) through inflating through gas charging connector (10), still include cooling body, follow supply pressure house steward (12) are drawn forth in gas tube (11) and are used for doing work to cooling body, and cooling body output evaporimeter (7) are connected through heat-conducting component the gas cylinder stops after being full of the gas cylinder by the controller according to the promotion of the progress control air pump power of inflating in gas cylinder (2).

2. The gas cylinder charging control device according to claim 1, characterized in that a proportional solenoid valve K0 is installed on the pressure supply manifold (12), the gas passing amount of the proportional solenoid valve K0 is controlled by the controller, a temperature sensor T is installed at the contact part of the heat conducting component and the gas cylinder, the signal of the temperature sensor T is input into the controller, and the controller controls the gas passing amount of the proportional solenoid valve according to the temperature rise.

3. The gas cylinder inflation control device according to claim 1, characterized in that the cooling system comprises a compression mechanism (3) and a linkage mechanism (4), the compression mechanism (3) comprises two cylinder blocks (17) which are arranged in parallel, a piston (18) is hermetically sealed in each cylinder block (17), so that each cylinder block (17) is divided into a gas cavity at the left end and a refrigerant cavity at the right end by the piston, the outer end of each gas cavity is respectively connected with a pressure increasing pipe and a pressure releasing pipe, the pressure increasing pipes of the two gas cavities are respectively provided with a single-inlet one-way valve, the two pressure increasing pipes are gathered at two output ends of a single-inlet double-outlet electromagnetic directional valve K1, the pressure supply header pipe (12) is connected with the input end of a single-inlet double-outlet electromagnetic directional valve K1, the pressure releasing pipes of the two gas cavities are respectively provided with a single-outlet one-way valve, and the two pressure releasing pipes are gathered at two input ends of a double-inlet single-, the output end of the double-inlet single-outlet electromagnetic directional valve K2 is communicated with a residual gas recovery device (9) through a return header pipe (13); the outer end parts of the two refrigerant cavities are respectively connected with an air inlet pipe through a single-inlet one-way valve and an exhaust pipe through a single-outlet one-way valve, the two air inlet pipes are gathered at two output ends of a single-inlet double-outlet electromagnetic directional valve K3, a main air pipe (16) from the output end of the evaporator (7) is connected with the input end of a single-inlet double-outlet electromagnetic directional valve K3, the two air exhaust pipes are gathered at two input ends of a double-inlet single-outlet electromagnetic directional valve K4, the output end of the double-inlet single-outlet electromagnetic directional valve K4 is communicated with the input end of the condenser (5) through a main exhaust pipe (14), and the output end of the condenser (5) is communicated with the input end of the evaporator (7) through a liquid pipe (; the single-inlet double-outlet electromagnetic reversing valve K1 and the double-inlet single-outlet electromagnetic reversing valve K2 are controlled by the controller to alternately work, and the single-inlet double-outlet electromagnetic reversing valve K3 and the double-inlet single-outlet electromagnetic reversing valve K4 are controlled by the controller to alternately work.

4. A gas cylinder filling control device according to claim 3, characterized in that the linkage mechanism (4) is a pair of crank link mechanisms which are distributed in a staggered way and are arranged in a closed shell (23) through bearings, each link is respectively articulated with a corresponding piston rod (19) through a pin shaft, and each piston rod (19) penetrates through the end wall of the gas cavity and is fixed in the middle of the corresponding piston.

5. The gas cylinder inflation control device according to claim 1, characterized in that the liquid pipe (15) and the total gas inlet pipe (16) are respectively connected with a hose (27), the condenser coil is fixed in a sealing seat (30), a heat conducting fin (29) is led out from one side of the sealing box (30) and is in good contact with the condenser coil, and the outer end of the heat conducting fin is arranged into an arc shape and is fixed with an arc heat conducting plate for matching and clamping on the outer side of the gas cylinder.

6. The gas cylinder inflation control device according to claim 5, characterized in that a shaft tube (33) is connected to the rear side of the seal box (30) through a fixing seat (32), one end of a handle (34) is sleeved outside the shaft tube (33) through a first shaft sleeve (35), a connector (36) is further arranged at the tail end of the shaft tube, a guide rod (39) is sleeved at the other end of the handle through a second shaft sleeve (37), the front end of the guide rod is designed to be an arc-shaped hook body (38) for clamping and fixing a gas cylinder, a rear seat and a handle (40) are arranged at the rear end of the guide rod, and a thrust spring is connected between the second shaft sleeve and the rear seat.

7. The gas cylinder inflation control device according to claim 1, characterized by further comprising a vehicle body (24), wherein traveling wheels and direction wheels (25) are installed at the bottom of the vehicle body (24), the condenser is arranged at the bottom of the vehicle body (24) and provided with a heat dissipation fan and a heat dissipation window, the compression mechanism (3) and the linkage mechanism (4) are arranged at the upper portion of the vehicle body (24) and provided with corresponding pipelines, the gas tube (11) and the gas pump are arranged in the vehicle body, and joints hung at the front end and the rear end of the vehicle body are respectively arranged at two ends of the gas tube (11).

8. A gas cylinder filling control device according to claim 1, characterized in that the return manifold (13) is connected to a reserve air pump through a reserve connector (51) and a pipeline, and then connected to the gas cylinder.

9. The gas cylinder filling control device according to claim 1, characterized in that position sensors or pressure sensors for detecting the operation progress of the piston or the connecting rod or the piston rod are arranged in the compression mechanism (3) and the linkage mechanism (4), and each sensor is connected with a signal input end of the controller, and the controller changes the reversing control of the single-in double-out electromagnetic reversing valve K1 and the double-in single-out electromagnetic reversing valve K2 according to the signal change.

10. A gas cylinder filling control device according to claim 1, characterized in that a discharge throttle valve (8) is mounted on the return manifold (13).

Technical Field

The invention belongs to the technical field of gas cylinder inflation control equipment, and particularly relates to a control technology applied to compressed gas inflation equipment for inflating a gas cylinder.

Background

The gas cylinder is a movable pressure container which can be repeatedly inflated and used at normal ambient temperature (-40-60 ℃), has nominal working pressure of 1.0-30 MPa (gauge pressure), and is used for containing gas, liquefied gas and liquid with standard boiling point equal to or lower than 60 ℃, and the product of pressure and volume is greater than or equal to 1.0 MPa. The gas cylinder is widely applied, and the gas cylinder can be almost not opened in the production field and the living field. As a bearing medium of the pressure-bearing equipment, the pressure-bearing equipment has the properties of flammability, explosiveness, toxicity, strong corrosion and the like, and the use environment is more complicated and severe than other pressure containers due to the characteristics of movement, repeated filling, unfixed operation and use personnel and changed use environment.

For a cylinder containing permanent gas, the nominal working pressure is the defined filling pressure of the contained gas at the reference temperature (typically 20 ℃). For a gas cylinder containing liquefied gas, the nominal working pressure is the upper limit value of the gas pressure in the cylinder at the temperature of 60 ℃. The allowable pressure of the gas cylinder is the highest pressure which can be borne by the gas cylinder, and the allowable pressure is not less than the medium pressure of the medium in the gas cylinder at 60 ℃. The correct filling of the gas cylinder is one of the keys to ensure the safe use of the gas cylinder, and improper filling is dangerous. The gas cylinder with excessive filling is influenced by the internal pressure and the ambient temperature, and particularly in summer, the liquefied gas in the gas cylinder rapidly expands due to the temperature rise, so that the pressure in the gas cylinder is rapidly increased, and the gas cylinder is cracked and exploded. The gas cylinders are prevented from being heated, the temperature is not suitable to exceed 40 ℃, when an emergency rescue task is executed, the field inflation has high requirements on the inflation efficiency, and each gas cylinder needs to be filled in a short time and can be filled with a plurality of gas cylinders in a period of time. In the present case, the compressed gas charging apparatus charges each gas cylinder for a period of time generally ranging from about 3 to 8 minutes. Heat is generated in the process of inflation, the influence is exerted on an inflation gas bottle, equipment is overheated after long-time working, and the normal shutdown cooling is adopted for 10-20 minutes after 1 hour of continuous working at present, so that the inflation efficiency is influenced. For fuel gas cylinders such as hydrogen fuel cell vehicles, high-pressure gaseous hydrogen storage is the dominant vehicle-mounted hydrogen storage mode due to the outstanding advantages of simple structure, high mass hydrogen storage density, high charging and discharging speed and the like. In order to improve the driving range (500 km) of a fuel cell vehicle, it is a trend to use high-pressure gaseous hydrogen storage of 70 MPa. Further, for hydrogen fuel cell vehicles to be commercially viable, the fueling time is typically limited to 3-5 min. However, in the rapid filling process of a 70MPa hydrogen storage cylinder, the temperature of each part of the cylinder rises suddenly due to factors such as gas compression effect, and if the temperature exceeds 85 ℃, the carbon fiber composite material on the outer layer of the hydrogen storage cylinder is likely to peel off and lose efficacy, thereby affecting the safety of a vehicle-mounted hydrogen storage system. Therefore, some method is often needed to control the temperature rise of the high-pressure quick-charging hydrogen. Precooling hydrogen, namely arranging a low-temperature precooling device at the upstream of a filling gun is the most direct and most common method, but a precooling system needs a large amount of fixed equipment and extra energy consumption, and the economical efficiency of vehicle-mounted high-pressure hydrogen storage is greatly reduced by part of investment and energy consumption.

Disclosure of Invention

Aiming at the defect and problem that the temperature is not suitable to be controlled in the gas cylinder inflation process through compressed gas inflation equipment at present, the invention provides the gas cylinder inflation control device which can automatically reduce the temperature along with the temperature rise in the gas cylinder.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a gas cylinder inflation control device, includes and is used for the gas pitcher and the gas cylinder of air feed as the air supply, and the output gas tube of gas pitcher is through the air pump pressure boost back, through aerifing the joint connection gas cylinder again, still includes cooling body, follows the gas tube is drawn forth and is supplied the pressure house steward and be used for doing work to cooling body, and cooling body output evaporimeter passes through heat-conducting component and connects the gas cylinder stops after being full of the gas cylinder by the controller according to aerifing progress control air pump power promotion in the gas cylinder.

A proportional solenoid valve K0 is arranged on a pressure supply manifold, the air passing amount of the proportional solenoid valve K0 is controlled by a controller, a temperature sensor T is arranged at the contact part of a heat-conducting component and an air bottle, the signal of the temperature sensor T is input into the controller, and the air passing amount of the proportional solenoid valve is controlled by the controller according to the temperature rise condition.

The cooling system comprises a compression mechanism and a linkage mechanism, wherein the compression mechanism comprises two cylinder bodies which are arranged in parallel, a piston is hermetically sleeved in each cylinder body, each cylinder body is divided into a gas cavity at the left end and a refrigerant cavity at the right end by the piston, the outer end part of each gas cavity is respectively connected with a pressure increasing pipe and a pressure releasing pipe, the pressure increasing pipes of the two gas cavities are respectively provided with a single-inlet one-way valve, the two pressure increasing pipes are gathered at the two output ends of the single-inlet double-outlet electromagnetic reversing valve K1, the pressure supply header pipe is connected with the input end of the single-inlet double-outlet electromagnetic reversing valve K1, the pressure releasing pipes of the two gas cavities are respectively provided with a single-outlet one-way valve, the two pressure releasing pipes are gathered at the two input ends of the double-inlet single-outlet electromagnetic reversing valve K2, and the output end of the double-inlet single-outlet electromagnetic; the outer end parts of the two refrigerant cavities are respectively connected with an air inlet pipe through a single-inlet one-way valve and an exhaust pipe through a single-outlet one-way valve, the two air inlet pipes are gathered at two output ends of a single-inlet double-outlet electromagnetic directional valve K3, a main air pipe from the output end of the evaporator is connected with the input end of a single-inlet double-outlet electromagnetic directional valve K3, two exhaust pipes are gathered at two input ends of a double-inlet single-outlet electromagnetic directional valve K4, the output end of the double-inlet single-outlet electromagnetic directional valve K4 is communicated with the input end of the condenser through the main exhaust pipe, and the output end of the condenser is communicated with the input end of the evaporator; the single-inlet double-outlet electromagnetic reversing valve K1 and the double-inlet single-outlet electromagnetic reversing valve K2 are controlled by the controller to alternately work, and the single-inlet double-outlet electromagnetic reversing valve K3 and the double-inlet single-outlet electromagnetic reversing valve K4 are controlled by the controller to alternately work.

The linkage mechanism is characterized in that a pair of crank link mechanisms which are distributed in a staggered mode are installed in the closed shell through bearings, each link is hinged to a corresponding piston rod through a pin shaft, and each piston rod penetrates through the end wall of the gas cavity and is fixed to the middle of the corresponding piston.

The liquid pipe and the total air inlet pipe are respectively connected with a hose, the condenser coil pipe is fixed in a sealing seat, a heat conducting sheet is outwards led out from one side of the sealing box, the heat conducting sheet is in good contact with the condenser coil pipe, the outer end of the heat conducting sheet is arranged into an arc shape, and an arc heat conducting plate is fixed on the outer end of the heat conducting sheet and used for being matched and clamped outside the air bottle.

Furthermore, the sealing box rear side is connected with an axle tube through a fixing seat, one end of the handle is sleeved outside the axle tube through an axle sleeve, the tail end of the axle tube is further provided with a connecting head, the other end of the handle is sleeved with a guide rod through an axle sleeve, the front end of the guide rod is designed into an arc hook body and used for clamping and fixing the gas cylinder, the rear end of the guide rod is provided with a rear seat and a handle, and a thrust spring is connected between the axle sleeve II and the rear seat.

Still include an automobile body, walking wheel and direction wheel are installed to its bottom, the condenser is arranged automobile body bottom in and is installed radiator fan and heat dissipation window, compressing mechanism and link gear are arranged automobile body upper portion in and are installed corresponding pipeline, and in gas tube and the air pump were arranged the automobile body in, the gas tube both ends were provided with the joint of articulate in automobile body front and back end respectively.

The return manifold can be connected with a standby air pump through a standby joint and a pipeline and then connected into an air tank.

And position sensors or pressure sensors for detecting the running process of the piston or the connecting rod or the piston rod can be arranged in the compression mechanism and the linkage mechanism at the same time, the sensors are connected with the signal input end of the controller, and the controller changes the reversing control of the single-in double-out electromagnetic reversing valve K1 and the double-in single-out electromagnetic reversing valve K2 according to the signal change.

Further, an exhaust throttle valve is mounted on the return manifold.

The invention has the beneficial effects that: the refrigeration system can automatically increase the refrigeration power along with the temperature rise of the gas cylinder due to the increase of the inflation pressure, almost does not participate in refrigeration work at the initial inflation stage, can automatically perform refrigeration and temperature reduction along with the temperature rise in the gas cylinder at the later inflation stage, and can automatically change the refrigeration degree along with the temperature change of the gas cylinder.

The compressed gas of follow gas pitcher output is by the air pump pressure boost after, through gas tube and gas charging connection gas cylinder, the initial stage is lower because of gas cylinder internal gas pressure, pump operating power is very low, thereby supply the main internal gas pressure of pressure lower, cooling body does not do work this moment, along with the gas cylinder internal pressure crescent, controller control air pump power increases gradually, lead to supplying the main internal gas pressure of pressure to increase, drive cooling body slow acting provides the cooling to the gas cylinder, it is close the later stage to aerify, because of gas cylinder internal pressure is enough big, temperature risees rapidly in the gas cylinder, the air pump must be in the high power operation this moment just can keep continuously to the compressed gas of sufficient pressure of rushing into in the gas cylinder, supply main internal pressure of pressure to rush this moment, make cooling body do work fast.

Drawings

Fig. 1 is a schematic view of the whole gas cylinder inflation control device.

Fig. 2 is a structural schematic diagram of the gas cylinder inflation control device.

Fig. 3 is a diagram of the connection of the controller to the sensors.

Fig. 4 is an enlarged structural view of the compression mechanism and the link mechanism in fig. 2.

FIG. 5 is a schematic view of a condenser hitch structure.

Fig. 6 is one of the principle diagrams of the gas tank inflation control device of the present invention.

Fig. 7 is a second schematic diagram of the gas tank inflation control apparatus of the present invention.

Fig. 8 is a structural view of the residual gas recovering apparatus.

Reference numbers in the figures: the air tank 1, the air bottle 2, the compression mechanism 3, the linkage mechanism 4, the condenser 5, the refrigerant throttle valve 6, the evaporator 7, the exhaust throttle valve 8, the residual air recovery device 9, the inflation joint 10, the inflation pipe 11, the pressure supply main pipe 12, the return main pipe 13, the main exhaust pipe 14, the liquid pipe 15, the main intake pipe 16, the cylinder block 17, the piston 18, the piston rod 19, the crank 20, the connecting rod 21, the central shaft 22, the closed shell 23, the vehicle body 24, the steering wheel 25, the heat dissipation window 26, the hose 27, the arc-shaped heat conduction plate 28, the heat conduction sheet 29, the seal seat 30, the handle 31, the fixed seat 32, the shaft pipe 33, the handle 34, the first shaft sleeve 35, the connecting head 36, the second shaft sleeve 37, the arc-shaped hook body 38, the guide rod 39, the handle 40, the thrust spring 41, the main storage tank 42, the pressurization joint 43, the air return joint 44, the, a spare joint 51.

Detailed Description

Example 1: a gas cylinder inflation control device comprises a gas cylinder 1 (compressed gas inflation device) and a gas cylinder 2 which are used as gas sources for supplying gas, the device is suitable for various compressed liquefied gas inflation control applications, such as compressed air, oxygen, liquefied petroleum gas, natural gas, inert gas or corrosive gas, and the like, wherein an output end inflation tube 11 of the gas cylinder 1 is connected with the gas cylinder 2 through an inflation connector 10 after being pressurized by a gas pump (or a compressor). The gas cylinder cooling device is characterized by further comprising a cooling mechanism, a pressure supply main pipe 12 is led out from the gas charging pipe 11 and used for applying work to the cooling mechanism, an evaporator 7 at the output end of the cooling mechanism is connected with the gas cylinder through a heat conducting component, and the controller controls the power of the gas pump to be increased until the gas cylinder is full of gas according to the charging progress in the gas cylinder 2 and then stops.

The device is placed on a vehicle body 24 as shown in fig. 1, and constitutes an apparatus capable of facilitating movement. The bottom of the vehicle body is provided with road wheels and direction wheels 25 and a traction end, and the condenser is arranged at the bottom of the vehicle body 24 and is provided with a cooling fan and a cooling window 26. The compression mechanism 3 and the linkage mechanism 4 are arranged at the upper part of the vehicle body 24 and are provided with corresponding pipelines, the inflation tube 11 and the air pump are arranged in the vehicle body, and two ends of the inflation tube 11 are respectively provided with a joint hung at the front end and the rear end of the vehicle body.

The principle of the device (system) is shown in figure 2, a proportional electromagnetic valve K0 is arranged on a pressure supply main pipe 12, the air passing amount of the proportional electromagnetic valve K0 is controlled by a controller, a temperature sensor T is arranged at the contact part of a heat-conducting component and an air bottle, and the signal of the temperature sensor T is input into the controller to control the air passing amount of the proportional electromagnetic valve according to the temperature rise condition. The refrigeration system can automatically increase the refrigeration power along with the temperature rise of the gas cylinder due to the increase of the inflation pressure, almost does not participate in refrigeration work at the initial inflation stage, can automatically perform refrigeration and temperature reduction along with the temperature rise in the gas cylinder at the later inflation stage, and can automatically change the refrigeration degree along with the temperature change of the gas cylinder.

The cooling system is shown in fig. 4, and comprises a compression mechanism 3 and a linkage mechanism 4 which are combined into a whole to realize synchronous operation.

As can be seen from the figure, the compression mechanism 3 includes two cylinder blocks 17 arranged in parallel, and a piston 18 is hermetically sleeved in each cylinder block 17, so that each cylinder block 17 is divided into a gas cavity at the left end and a refrigerant cavity at the right end by the piston.

The outer ends of the two gas cavities are respectively connected with the pressure increasing pipes 121 and 122, the outer ends of the two gas cavities are also respectively connected with the pressure releasing pipes 131 and 132, the pressure increasing pipes 121 and 122 of the two gas cavities are respectively provided with a single-inlet one-way valve, and the two pressure increasing pipes 121 and 122 are gathered at two output ends of the single-inlet double-outlet electromagnetic directional valve K1. The pressure supply manifold 12 is connected to the input end of the single-in double-out electromagnetic directional valve K1. The pressure relief pipes 131 and 132 of the two gas cavities are respectively provided with a single-outlet one-way valve, and the two pressure relief pipes 131 and 132 are gathered at two input ends of the double-inlet single-outlet electromagnetic directional valve K2. The output end of the double-inlet single-outlet electromagnetic directional valve K2 is communicated with the residual air recovery device 9 through a return manifold 13.

The outer end parts of the two refrigerant chambers are respectively connected with the air inlet pipes 161 and 162 through single-inlet check valves, and the outer end parts of the two refrigerant chambers are respectively connected with the air outlet pipes 141 and 142 through single-outlet check valves. The two intake pipes 161 and 162 are collected at two output ends of the single-in double-out electromagnetic directional valve K3. The main gas pipe 16 from the output end of the evaporator 7 is connected to the input end of a single-in double-out electromagnetic directional valve K3. The two exhaust pipes 141 and 142 are gathered at two input ends of the double-inlet single-outlet electromagnetic directional valve K4, and an output end of the double-inlet single-outlet electromagnetic directional valve K4 is communicated with an input end of the condenser 5 through the main exhaust pipe 14.

As shown in fig. 2, the output end of the condenser 5 is connected to the input end of the evaporator 7 through a liquid pipe 15 and the refrigerant throttle 6. The single-inlet double-outlet electromagnetic directional valve K1 and the double-inlet single-outlet electromagnetic directional valve K2 are controlled by the controller to alternately work, and the single-inlet double-outlet electromagnetic directional valve K3 and the double-inlet single-outlet electromagnetic directional valve K4 are controlled by the controller to alternately work. As shown in fig. 1, the liquid pipe 15 and the air inlet manifold 16 are further connected with a hose 27, the condenser coil is fixed in a sealing seat 30, and a heat conducting fin 29 is led out from one side of the sealing box 30, the heat conducting fin is in good contact with the condenser coil, the outer end of the heat conducting fin is arranged into an arc shape and is fixed with an arc heat conducting plate for matching and clamping on the outer side of the gas cylinder, specifically, the rear side of the sealing box 30 is also provided with a handle 31 for convenient hand-held operation, and an auxiliary component for fixing can be further arranged.

As can be seen from fig. 4, the linkage mechanism 4 is a crank link mechanism with a pair of crank links arranged in a staggered manner through bearings in a closed housing 23, specifically, two ends of a central shaft are arranged in shaft holes at two ends of the housing through bearings, the two crank links 20 are connected together at an eccentric position between two pairs of crank links 20 connected to the middle of the central shaft 22 through eccentric shafts, the two eccentric shafts are arranged in a staggered manner along the central shaft pair, each eccentric shaft is sleeved with a shaft sleeve in a matching manner, each shaft sleeve is connected with a link 21, each link is hinged with a corresponding piston rod 19 through a pin shaft, and each piston rod 19 penetrates through the end wall of the gas cavity and is fixed to. In this embodiment, the linkage mechanism 4 does not provide power, and when the corresponding piston of the compression mechanism is driven to move forward, the piston drives the piston rod to pull the corresponding connecting rod to move forward, and the connecting rod drives the crank to rotate, so as to drive the crank connecting rod on the other side to move backward, and then the crank connecting rod on the other side moves back and forth in a cycle.

And position sensors or pressure sensors for detecting the running process of the piston or the connecting rod or the piston rod are arranged in the compression mechanism 3 and the linkage mechanism 4, the sensors are connected with signal input ends of a controller, and the controller changes the reversing control of the single-in double-out electromagnetic reversing valve K1 and the double-in single-out electromagnetic reversing valve K2 according to the signal change.

According to the arrow direction in fig. 2, after the compressed gas output from the gas tank 1 is pressurized by the gas pump, the compressed gas is connected with the gas cylinder 2 through the gas charging pipe 11 and the gas charging connector 10, the gas pressure in the gas cylinder 2 is low in the initial stage, the working power of the gas charging pump is low, so that the gas pressure in the gas supply main pipe 12 is low, the cooling mechanism hardly does work at this moment, along with the gradual increase of the pressure in the gas cylinder 2, the controller controls the power of the gas pump to gradually increase, the gas pressure in the gas supply main pipe 12 is increased, the cooling mechanism is driven to slowly do work to cool the gas cylinder, the temperature in the gas cylinder is rapidly increased due to the fact that the pressure in the gas cylinder 2 is large enough in the later stage of gas charging, the gas pump can keep continuously injecting the compressed gas with enough pressure into the gas cylinder 2 only when the gas pump is.

Example 2: as shown in fig. 5, on the basis of the improvement of the condenser in embodiment 1, in this embodiment, the rear side of the sealing box 30 is connected with an axle tube 33 through a fixing seat 32, one end of a handle 34 is sleeved outside the axle tube 33 through a first axle sleeve 35, the end of the axle tube is further provided with a connecting head 36, the other end of the handle is sleeved with a guide rod 39 through a second axle sleeve 37, the front end of the guide rod is designed to be an arc-shaped hook body 38 for clamping and fixing the gas cylinder, the rear end of the guide rod is provided with a rear seat and a handle 40, and a thrust spring is connected between the second axle sleeve and the.

Example 3: a gas tank inflation control device, as shown in fig. 6, introduces compressed gas from a compressed gas pipeline or a total storage tank 42 into a carrier gas tank of a compressed gas carrier vehicle through an inflation pipe, a gas pump and an inflation joint 10, and arranges a cooling work system as described in embodiment 1 near the vehicle-mounted gas tank. As shown in fig. 6, the broken line part is the system arranged on a compressed gas transport vehicle, the detailed construction of which is described in embodiment 1, and which, without further details, has three external joints: a charging connection 10, a charging connection 43 and a return connection 44. The inflation connector 10 is connected with the inflation pipe 11, the pressurization connector 43 is connected with the pressurization manifold 12, and the return connector 44 is connected with the return manifold 13.

Example 4: in addition to embodiment 3, as shown in fig. 7, a condenser is provided inside the vehicle-mounted gas tank, for example, a plurality of layers of heat conducting fins are fixed in the center inside the vehicle-mounted gas tank and fixed between the layers of heat conducting fins through an evaporator coil, and both ends of the evaporator are led out of the vehicle-mounted gas tank and connected to a liquid pipe 15 and a total intake pipe 16, respectively.

Example 5: the residual gas recovery device 9 comprises a recovery gas bottle 45, a free piston 46 is sleeved on the inner side of the recovery gas bottle in a matching mode, a through hole is formed in the center of the bottom of the recovery gas bottle, an air inlet and outlet hole 47 is formed in the periphery of the bottom of the recovery gas bottle, the bottom of the recovery gas bottle is fixed with the front end of a cylinder body 48 of a hydraulic cylinder, and a push rod 49 of the hydraulic cylinder penetrates into the through hole in. The top ends of the recovery gas cylinders are communicated with the return main pipe 13 through branch gas pipes. The pressure relief gas from the return manifold 13 enters the recovery cylinder 45 and as the gas flow increases the free piston is pushed downward until it bottoms out in contact with the ram 49 of the cylinder. When the compressed gas temporarily stored in the recovery gas cylinder 45 is sufficiently used, the hydraulic cylinder is controlled to drive the free piston 46, thereby forcing the cylinder to discharge and reuse the compressed gas. The electromagnetic valves can be respectively installed on the branch gas pipes, the pressure sensor is installed at the end part of the hydraulic rod push rod 49, the controller receives signals of the pressure sensor to judge that the gas in the recovery gas cylinder is full of gas, then the branch gas pipe electromagnetic valves of the recovery gas cylinder are controlled to be locked and the adjacent branch gas pipe electromagnetic valves of the other recovery gas cylinder are opened, and the decompression gas is continuously recovered in sequence.

The foregoing detailed description of the invention is merely exemplary in nature and is not intended to limit the invention. Therefore, any modification, equivalent replacement, improvement, etc. without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention, for example, a power assisting motor is connected to the central shaft 22 of the linkage mechanism and is controlled by the controller to make up for the situation that the compressed gas is insufficient in power supply or is not suitable for using the compressed gas to do work, for example, the exhaust throttle valve 8 is installed on the return manifold 13, for example, the return manifold 13 is connected to a spare air pump through a spare joint 51 and a pipeline and then connected to an air tank in fig. 1, etc. the modification is that the power assisting motor is connected to the central shaft 22 of the linkage mechanism and is controlled by.