CN217402275U - Automatic inflating device for high-pressure gas cylinder - Google Patents

Abstract

The utility model relates to an automatic inflating device of a high-pressure gas cylinder, which comprises a high-pressure air filling pump, an inflating valve and other parts, wherein safety valves are respectively arranged between cylinders of the high-pressure air filling pump and in an oil-gas separator, a fine filter and other parts; a pressure regulating valve is connected in an inflation pipeline between the fine filter and the inflation valve; the gas circuit inlet of the pressure switch is connected with an inflation pipeline behind the inflation valve through a gas pipeline, and the circuit switch of the pressure switch is electrically connected with a control circuit board in the distribution box through a cable; the outer part of the gas cylinder is provided with a protective cover. The safety valves with different pressure grades can ensure that the working pressure of each part in the device does not exceed the rated pressure, and each safety valve can timely release pressure after exceeding the set pressure limit in the inflating process. The pressure regulating valve can regulate the inflation pressure according to the rated pressure of the gas cylinder, so that overpressure of the gas cylinder is prevented. The device adopts multiple safety measures, and can ensure the personal safety of high-pressure inflation operators.

Description

Automatic inflating device for high-pressure gas cylinder

Technical Field

The utility model belongs to the inflation equipment of high-pressure gas cylinder, especially a high-pressure gas cylinder automatic inflation device.

Background

Offshore operation platforms are generally far from the land, the space is narrow, the climate and sea conditions are extremely unstable, equipment and facilities on the platforms are relatively concentrated, and the danger sources are many and concentrated. Therefore, the emergency management work of the offshore platform is difficult compared with the land oil field, and the emergency management work of the offshore platform is mainly embodied in that the emergency resources are limited. Different from the land facility, once the land facility has an accident and needs emergency rescue, local emergency rescue goods and materials and emergency management personnel can be immediately mobilized, and a large amount of emergency force can be gathered in a short time to participate in rescue work. The offshore platforms are completely different in conditions, generally far from the land, and even under normal weather and sea conditions, external rescue force can be reached for a long time; if the people meet severe weather and sea conditions, the people are more difficult to reach the rescue site in time to deploy rescue.

In terms of reality, the emergency management of the offshore platform mainly depends on self rescue, the rescue force only depends on the platform's own part-time rescue team, and the rescue ability, experience and level are far away from the professional rescue team. If the accident cannot be controlled within a controllable range by using on-site emergency management resources in the first time, subsequent rescue after the accident is upgraded will have half the effort. Therefore, the capability and experience of the platform's own part-time rescue team and the emergency supplies provided by the platform are of great importance to the effect of emergency rescue.

In order to strengthen the safety management work of the marine oil, guarantee the life and property safety of workers, and prevent and reduce the safety accidents of the marine oil production, the twenty-third regulation of the marine oil safety management rules: "fire-fighting equipment for marine oil production, working facilities should be equipped with 4 sets of firefighter equipment including thermal protective clothing, fire boots and gloves, helmets, positive pressure air respirators, fire axes, and hand-held safety lights that can be used continuously for 3 hours".

The positive pressure air respirator is a self-sufficient open air breathing device, which is mainly suitable for places such as fire fighting, chemical engineering, ships, petroleum, smelting, factories and mines, laboratories and the like, so that fire fighters or rescue personnel can safely carry out fire extinguishing, rescue and relief work and rescue work in severe environments filled with dense smoke, toxic gas, steam, dust or oxygen deficiency. The positive pressure air respirator air bottle is an important component of an air respirator and is mainly used for loading compressed air for breathing of a human body. The air cylinders of the positive pressure air respirators with different specifications are used for different times, the volumes of the high-pressure air cylinders of the common respirators are 6.8 liters and 9 liters, and the service life of a normal 6.8L air respirator is about 1 hour. When the pressure of the high-pressure gas cylinder reaches the lower limit, the alarm whistle can give an alarm, and the high-pressure gas cylinder must reach a safe area to be inflated and maintained. The high-pressure gas cylinder is mainly used for storing high-pressure air, and at present, the high-pressure gas cylinder is made of steel and carbon fiber. The following notes are taken during inflation and use: the charged air can not exceed the rated safe air pressure, the air humidity can not be too high, otherwise, the oxidation of the inner wall of the steel cylinder can be caused; when in use, the gas cylinder cannot collide violently and rub with a sharp object, the gas cylinder is damaged if the gas cylinder is light, and the gas cylinder is exploded if the gas cylinder is heavy; the gas cylinder filled with gas can not be exposed to the sun and stored at high temperature, thereby avoiding damage or explosion.

When a fire disaster or oil gas leakage occurs in the offshore oil and gas exploitation platform, platform personnel are required to wear firemen and equipment to enter a dangerous area in time for disposal. In order to improve the emergency disposal capability of platform personnel, a drill is required to be performed regularly. Wear to use positive pressure air respirator can consume the air in the high-pressure gas cylinder at the rehearsal in-process, can send the warning when gas cylinder pressure reaches the lower limit, just need inflate the gas cylinder. The air cylinder of the platform positive pressure type air respirator is taken back to land for inflation, the inflation cost is high, and the period is long.

In order to improve the filling efficiency of the high-pressure gas cylinder, the affiliated unit of the platform obtains the filling certificate of the high-pressure gas cylinder regulated by the national standard, and a special high-pressure air filling pump is equipped for the platform to fill gas. The regulations relating to cylinder filling are strictly enforced to ensure no misfuelling, no overfilling, no mix-filling and traceable investigation of filling quality. The filler and pre-filler inspectors are trained on the nature of the gas, basic knowledge of the cylinder, potential hazards, and emergency handling measures. The special person checks the gas cylinders one by one before filling, confirms the gas in the cylinders and makes a record. Gas cylinders manufactured by units without manufacturing licenses and imported gas cylinders which are not approved by safety monitoring agencies are not filled, and non-inspected gas cylinders and modified gas cylinders which are filled for an extended period are strictly forbidden.

The following defects of the existing inflating device are found in the gas cylinder filling process:

the inflation working pressure of the high-pressure air filling pump is 30MPa, and operators are required to monitor the pressure of the gas cylinder on site in the operation process of the machine, so that the power switch can be manually turned off only by matching two persons when the filling pressure or the emergency is reached.

In addition, when safety problems such as high-speed fragments, high-pressure inflation pipeline tripping, incapability of stopping the high-pressure air filling pump in time and the like occur after the gas cylinder with potential safety hazards on the filling site explodes, the personal safety of site gas cylinder filling operators is seriously harmed.

There are also several air-packing devices in the prior art: the application number is CN201910511843.0 discloses an aerating device, it can improve the gas charging efficiency, increase the quantity of being full of the little gas cylinder, reduces the air compressor machine and opens and stop the number of times, practices thrift the cost. The technical key points of the invention are as follows: an inflation device comprises an air inlet 1, an inflation connector 9, a first air bottle 3a, a second air bottle 3b, a first one-way valve 2a, a second one-way valve 2b, a first pressure gauge 4a, a second pressure gauge 4b, a third one-way valve 2e, a fourth one-way valve 2f, a pressure feedback control valve 5a, a first output pressure pipeline 6a, a second output pressure pipeline 6b, a first pressure feedback pipeline 7, a second pressure feedback pipeline 7a and a pressure regulating valve 8; the first gas cylinder 3a and the second gas cylinder 3b are connected in parallel; the pressure feedback control valve 5a is connected with each component to form a feedback mechanism. The device of the invention has the beneficial effects that: the number of the small gas cylinder groups filled with the gas is increased by adopting a mode of connecting the first gas cylinder 3a and the second gas cylinder 3b in parallel; the pressure feedback technology is adopted, the whole inflation is completed in a full-automatic control mode, and the inflation efficiency is improved.

However, the following disadvantages with respect to high-pressure air filling still exist: although the device can increase the number of small gas cylinders, the number of times of starting and stopping the air compressor is reduced, the gas cylinders are required to be connected in parallel for inflation, and the safety protection difficulty is increased. A pressure sensing system and a pressure control system need to be added in a pressure feedback mechanism, and the process is complicated. The whole inflation process is not provided with a safety valve, so that the pressure cannot be effectively released when the pipeline is in overpressure, and potential safety hazards exist.

A safe inflator device, application No.: CN 201822161972.5. The utility model discloses a safe inflation device, which comprises a bottom plate and a vertical plate; a vertical plate is welded on the rear side of the top end of the bottom plate; a supporting plate is welded at the left end of the front side of the vertical plate; the top end of the supporting plate is connected with an inflator pump through a screw; the air inlet of the inflator pump is clamped with one end of an air inlet pipe, and the other end of the air inlet pipe extends out of the vertical plate; the air outlet of the inflator is clamped with one end of an air outlet pipe; the other end of the air outlet pipe is connected with an inflation port in a threaded manner; a chute is formed in the rear side of the inner cavity of the vertical plate along the left-right direction; a sliding block is embedded in the inner cavity of the sliding chute; the front side of the sliding block is welded with a rectangular block. When can realize aerifing the gas cylinder, carry out stable fixed with it, use for a long time at aerating device, its connection department of aerifing port and gas cylinder is not hard up back, can prevent that high-pressure gas from blowing the gas cylinder open, avoids gas leakage, has reduced the potential safety hazard, avoids a large amount of gas extravagant simultaneously, is favorable to promoting.

However, the gas charging device is mainly used for manually fixing the gas cylinder between the vertical plate and the bottom plate to prevent blowing, and the potential safety risk is still existed.

In order to ensure the personal safety of operators, the automatic inflation device of the high-pressure gas cylinder still needs to be improved.

Disclosure of Invention

The utility model aims at providing a high-pressure gas cylinder automatic inflation device further improves the personal safety who aerifys operating personnel.

The technical solution of the utility model is that: the utility model provides a high-pressure gas cylinder automatic charging device includes high-pressure air filling pump, motor, oil and gas separator, secondary filter and inflation valve, is equipped with the manometer in the inflation valve, and the bent axle of cylinder passes through the belt with high-pressure air filling pump and is connected between the cylinder through the cooling tube, and oil and gas separator connects between the second grade cylinder and the tertiary cylinder of high-pressure air filling pump, and the secondary filter is connected between tertiary cylinder and inflation valve, wherein: safety valves are arranged in a cooling pipe between the primary cylinder and the secondary cylinder, a shell top of the oil-gas separator, a tank top of the fine filter and an inflation pipeline between the fine filter and the inflation valve; a pressure regulating valve is connected in an inflation pipeline between the fine filter and the inflation valve; the gas circuit inlet of the pressure switch is connected with an inflation pipeline behind the inflation valve through a gas pipeline, and the circuit switch of the pressure switch is electrically connected with a control circuit board in the distribution box through a cable; the outer part of the gas cylinder is provided with a protective cover.

Preferably, a differential pressure test line is arranged outside the tank of the fine filter and between the bottom of the lance in the fine filter and the outlet line of the fine filter, and a differential pressure display is connected in the differential pressure test line.

Preferably, the outside of the bottom of the fine filter tank body is provided with a liquid level meter through a liquid level display pipeline, one liquid level display pipeline is arranged at the upper part of the liquid level meter and communicated with the bottom of the fine filter tank body, and the other liquid level display pipeline is arranged at the lower part of the liquid level meter and communicated with the bottom end of the fine filter tank body.

Preferably, an outlet pipeline of the fine filter is connected with an inflation pipeline through a pressure retaining valve, and the safety valve is arranged in the inflation pipeline in front of the pressure regulating valve.

Preferably, a wireless pressure transmitter is further installed in the inflation pipeline between the safety valve and the pressure switch, and the wireless pressure transmitter is connected with a wireless pressure receiver installed in a computer through a wireless signal.

Preferably, a wireless remote control receiver is further mounted in the power distribution box and can be connected with a remote controller in the hand of an operator through wireless signals.

Preferably, the protective cover is formed by connecting two cover bodies with semicircular inner cavities in an involutory manner through hinges and buckles, and the inner cavities of the two cover bodies after involutory are larger than the outer wall of the gas cylinder; the rear ends of the two cover bodies are provided with pressure relief flow guide windows.

Preferably, the bottom of one cover body in the protection cover is provided with a base.

Preferably, the protection chains are further mounted on two sides of the inflation valve, pipe clamps are arranged at two ends of each protection chain, and the protection chains can be fixed outside the gas cylinder bayonet of the protection cover at two ends of the inflation valve and outside the inflation pipeline through the pipe clamps at the two ends.

Compared with the prior high-pressure inflating device, the beneficial effects of the utility model reside in that:

safety valves are arranged in a cooling pipe between a first-stage cylinder and a second-stage cylinder of the high-pressure air filling pump, a shell top of an oil-gas separator, a tank top of a fine filter and an inflation pipeline between the fine filter and an inflation valve, the safety valves with different pressure grades can ensure that the working pressure of each part in the device does not exceed the rated pressure, and each safety valve can timely release pressure after exceeding the set pressure limit in the inflation process.

A protective cover is arranged outside the gas cylinder, and a pressure relief flow guide window is arranged in the protective cover; the pressure regulating valve can regulate the inflation pressure according to the rated pressure of the gas cylinder to prevent the gas cylinder from being over-pressurized.

And a pressure difference testing pipeline is arranged outside the tank body of the fine filter and between the bottom of the spray pipe and the outlet pipeline, and a pressure difference display is connected in the pressure difference testing pipeline. The pressure difference between the bottom of the spray pipe in the fine filter, namely the inlet and the outlet pipeline of the tank body, can be displayed in the air inflation process, if the pressure difference exceeds a set value, measures can be taken in time to stop air inflation.

This device can remote monitoring inflation pressure, and operating personnel can also remotely use remote controller remote control block terminal, opens and stops motor and high pressure pump, aerifys or stops to aerify for the gas cylinder. When the preset filling pressure is reached, the control circuit in the control circuit board in the distribution box can be automatically disconnected through the pressure switch, the filling is stopped, and the personal safety of an operator is further ensured.

The high-pressure air filling pump in the device is provided with a three-stage cylinder, an inlet and an outlet of the three-stage cylinder are connected in series and are rapidly pressurized step by step, the oil-water separator can roughly filter oil and water in pressurized gas, and the fine filter can ensure that air entering an air respirator air cylinder is dry and clean.

The protective chains arranged on the two sides of the inflation valve can effectively prevent the situations that the inflation pipeline swings and injures operators when the inflation pipeline joint is tripped.

In conclusion, the device adopts multiple safety measures, and can ensure the personal safety of high-pressure inflation operators.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is an overall structure development schematic diagram of the present invention.

Fig. 2 is a schematic view showing a connection structure between cylinders in the high pressure air-filled pump of fig. 1.

Fig. 3 is a schematic diagram of the fine filter of fig. 1.

In the figure: the device comprises an air inlet pipe 1, a coarse filter 2, a cooling pipe 3, an air cylinder 4, a crankshaft 4-1, a piston 4-2, a connecting rod 4-3, a motor 5, a remote control distribution box 6, an oil-water separator 7, a first discharge valve 8, a safety valve 9, a fine filter 10, a spray pipe 10-1, a coarse filter plate 10-2, a liquid level meter 10-3, a precise filter element 10-4, a differential pressure display 10-5, a second discharge valve 11, a pressure retaining valve 12, a pressure regulating valve 13, a wireless pressure transformer 14, a pressure switch 15, a protection chain 16, an inflation valve 17, a pressure gauge 18, a gas cylinder valve 19, a gas cylinder 20 and a protection cover 21.

Detailed Description

The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, an automatic inflator for a high-pressure gas cylinder includes a high-pressure air filling pump, a motor 5, an oil-gas separator 7, a fine filter 10, and an inflation valve 17, wherein a pressure gauge 18 is installed in the inflation valve 17, the motor 5 is connected with a crankshaft 4-1 of a cylinder 4 in the high-pressure air filling pump through a belt, the cylinders 4 are connected through a cooling pipe 3, the oil-gas separator 7 is connected between a secondary cylinder and a tertiary cylinder of the high-pressure air filling pump, and the fine filter 10 is connected between the tertiary cylinder and the inflation valve 17, wherein:

safety valves 9 are respectively arranged in the cooling pipe 3 between the primary cylinder and the secondary cylinder, the shell top of the oil-gas separator 7, the tank top of the fine filter 10 and an inflation pipeline between the fine filter 10 and the inflation valve 17;

a pressure regulating valve 13 is connected in an inflation pipeline between the fine filter 10 and the inflation valve 17;

the gas circuit inlet of the pressure switch 15 is connected with an inflation pipeline behind the inflation valve 17 through a gas pipeline, and the circuit switch of the pressure switch 15 is electrically connected with a control circuit board in the distribution box 6 through a cable;

a protective cover 21 is mounted on the outside of the gas cylinder 20 to be inflated.

The utility model discloses improve original high pressure aerating device, the jar number of cylinder 4 in the high-pressure air filling pump is established to the tertiary, all is equipped with piston 4-2 and connecting rod 4-3 in each grade cylinder, and connecting rod 4-3 in each grade cylinder all is connected with bent axle 4-1. Safety valves 9 are additionally arranged between the first-stage cylinder and the second-stage cylinder of the cylinder 4, between the second-stage cylinder and the oil-gas separator 7 and above the fine filter 10. Meanwhile, a pressure switch 15 is connected in an inflation pipeline between the motor 5 and the fine filter 10 and between the motor and the inflation valve 17, when the measured inflation pressure reaches a rated value, the pressure switch 15 can stop the motor 5 through a control circuit board in the distribution box 6, and the safety valve 9 and the pressure switch 15 are both applied to improve the safety working performance of the device.

In order to further improve the safety of the high-pressure gas cylinder during the charging process, a protective cover 21 is arranged outside the gas cylinder 20.

When the air cylinder valve is used, the air cylinder valve 19 is in threaded connection with the air cylinder 20, the air cylinder valve 19 is opened, the motor 5 is started, and the air cylinder 4 is driven by the motor 5. Through the air inlet pipe 1 and the coarse filter 2, air firstly enters a first-stage cylinder of the cylinder 4 and then is filled into the air bottle 20 through a second-stage cylinder, the oil-gas separator 7, a third-stage cylinder, the fine filter 10, the air filling pipeline, the air filling valve 17 and the air bottle valve 19. A first discharge valve 8 is arranged at the lower part of the oil-gas separator 7 and can discharge impurities at the bottom of the oil-gas separator 7; the fine filter 10 is provided with a spray pipe 10-1, a rough filter plate 10-2 and a fine filter element 10-4, wherein the spray pipe 10-1 is arranged in a tank body of the fine filter 10, is communicated with an inlet of the tank body and is positioned on the side surfaces of the rough filter plate 10-2 and the fine filter element 10-4. The charged gas enters from the tank inlet of the fine filter 10 and the spray pipe 10-1 through the cooling pipe 3, is filtered by the coarse filter plate 10-2 and the fine filter core 10-4, and then enters into the charging pipeline and the gas bottle 20 through the outlet pipeline. And a second discharge valve 11 is arranged at the bottom of the fine filter 10 and can discharge oil, water and impurities at the bottom of the fine filter 10.

On the basis of the first embodiment, the utility model discloses still have following embodiment:

referring to fig. 3, a differential pressure test line is installed outside the tank of the fine filter 10 and between the bottom of the nozzle 10-1 in the fine filter 10 and the outlet line of the fine filter 10, and a differential pressure indicator 10-5 is connected to the differential pressure test line. The pressure difference between the bottom of the spray pipe 10-1 in the fine filter 10, namely the inlet and outlet pipelines of the tank body can be displayed in the inflating process, and the precise filter element 10-4 can be replaced in time after a certain pressure difference is achieved.

The outside of the bottom of the fine filter 10 is provided with a liquid level meter 10-3 through a liquid level display pipeline, one liquid level display pipeline is arranged at the upper part of the liquid level meter 10-3 and communicated with the bottom of the fine filter 10, and the other liquid level display pipeline is arranged at the lower part of the liquid level meter 10-3 and communicated with the bottom of the fine filter 10. The liquid level meter 10-3 is additionally arranged at the bottom of the tank body of the fine filter 10, so that oil, water and impurities at the bottom of the tank body of the fine filter 10 can be observed and discharged in time.

An outlet pipeline of the fine filter 10 is connected with an inflation pipeline through a pressure retaining valve 12, and the pressure retaining valve 12 ensures the pressure of the fine filter 10 to be stable and avoids damaging filter elements in the fine filter; the safety valve 9 is installed in the inflation line in front of the pressure regulating valve 13.

And a wireless pressure transmitter 14 is also arranged in the inflation pipeline between the safety valve 9 and the pressure switch 15, the wireless pressure transmitter 14 is connected with a wireless pressure receiver arranged in a computer through a wireless signal, and the inflation pressure is remotely monitored through an APP software program in the computer.

And a wireless remote control receiver is also arranged in the distribution box 6 and can be connected with a remote controller in the hand of an operator through a wireless signal. The operator can use the remote control to remotely control the distribution box 6, start and stop the motor 5, and inflate the gas cylinder 20. When the inflation pressure of the gas cylinder 20 reaches a set value, the pressure switch 15 may disconnect the control circuit of the electric box 6 from filling.

The protective cover 21 is formed by connecting two cover bodies with semicircular inner cavities in an involutory mode through hinges and buckles, and the inner cavities of the two cover bodies after involutory mode are larger than the outer wall of the gas cylinder 20; the rear ends of the two cover bodies are provided with pressure relief flow guide windows. The protective cover 21 can reduce the damage range in case of explosion, and can prevent the protective cover 21 from bursting into fragments after the pressure relief flow guide window is arranged.

The base is arranged at the bottom of one cover body in the protective cover 21, so that the placement height of the gas cylinder 20 is raised, and the gas cylinder is convenient to mount and dismount.

Protection chains 16 are further mounted on two sides of the inflation valve 17, pipe clamps are arranged at two ends of each protection chain 16, the protection chains 16 can be fixed outside the gas bottle bayonets of the protection covers 21 at the two ends of the inflation valve 17 and outside the inflation pipeline through the pipe clamps at the two ends, and the inflation pipeline can be prevented from being broken in the inflation process.

When the gas cylinder 20 is inflated, the distribution box 6 is opened remotely or on site to supply power to the motor 5, the motor 5 drives the cylinder 4 to rotate, air enters the cylinder 4 from the air inlet pipe 1 and the coarse filter 2, the air enters the fine filter 10 after being pressurized and cooled by the cooling pipe 3 and the cylinder 4 in three stages, high-pressure air is uniformly sprayed onto the coarse filter 10-2 through the spray pipe 10-1, and water and impurities in the air flow to the bottom of the fine filter 10 along the coarse filter 10-2. The coarsely filtered air enters the fine filter element 10-4 along the passage in the coarse filter plate 10-2 to circulate and filter out fine particles. The liquid level meter 10-3 displays the liquid level at the bottom of the fine filter 10, so that accumulated water and impurities at the bottom can be conveniently and timely discharged. The pressure difference display 10-5 displays the pressure difference between the tank inlet and outlet pipelines of the fine filter 10 in time, and the precise filter element 10-4 is replaced in time after a certain pressure difference is achieved. The oil-water separator 7 filters and separates water and oil in the compressed air and discharges the water and oil through the first discharge valve 8, and when the air pressure exceeds the set pressure of the safety valve 9 arranged at the top of the oil-water separator 7, the safety valve 9 is opened to release the pressure. A precise filter element 10-4 of the fine filter 10 filters out dry and pure air, and a second discharge valve 11 discharges accumulated water and impurities at the bottom of the fine filter 10. The pressure retaining valve 12 installed at the outlet pipeline of the fine filter 10 is opened under a set pressure to ensure the stable working pressure of the fine filter 10.

The pressure of the wireless pressure transmitter 14 can be remotely monitored by the APP software in the computer of the control center. When the rated pressure of the gas cylinder 20 is reached, the pressure switch 15 can disconnect the control circuit of the distribution box 6 to cut off the power of the motor 5. If the pressure switch 15 is invalid, the control circuit of the distribution box 6 can be disconnected through remote control of the remote controller, and the power of the motor 5 is cut off.

After the gas cylinder 20 is completely inflated, the gas cylinder valve 19 is closed, the pressure relief hole of the inflation valve 17 is opened to completely exhaust the pressure in the inflation pipeline, the pressure gauge 18 is observed to be zero, the pipe clamps at the two ends of the protection chain 16 are disassembled, the inflation valve 17 is disassembled, and the gas cylinder 20 is taken out of the protective cover 21.

The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents can be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and the concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description set out above.

Claims (9)

1. The utility model provides a high pressure gas cylinder automatic charging device, includes high-pressure air filling pump, motor, oil and gas separator, secondary filter and inflation valve, is equipped with the manometer in the inflation valve, and the motor passes through the belt with the bent axle of high-pressure air filling pump middle cylinder to be connected, connects through the cooling tube between the cylinder, and oil and gas separator connects between the second grade cylinder and the tertiary cylinder of high-pressure air filling pump, and the secondary filter is connected between tertiary cylinder and inflation valve, characterized by: safety valves are arranged in a cooling pipe between the primary cylinder and the secondary cylinder, a shell top of the oil-gas separator, a tank top of the fine filter and an inflation pipeline between the fine filter and the inflation valve; a pressure regulating valve is connected in an inflation pipeline between the fine filter and the inflation valve; the gas circuit inlet of the pressure switch is connected with an inflation pipeline behind the inflation valve through a gas pipeline, and the circuit switch of the pressure switch is electrically connected with a control circuit board in the distribution box through a cable; the outside of the gas cylinder is provided with a protective cover.

2. An automatic inflation device for a high-pressure gas cylinder as claimed in claim 1, characterized in that a differential pressure test line is provided outside the body of the fine filter and between the bottom of the nozzle in the fine filter and the outlet line of the fine filter, and a differential pressure indicator is connected to the differential pressure test line.

3. An automatic inflator for high pressure gas cylinders according to claim 1 or 2, wherein the outside of the bottom of the fine filter tank is provided with level gauges via level display lines, one of the level display lines is provided at the upper part of the level gauge and communicates with the bottom of the fine filter tank, and the other level display line is provided at the lower part of the level gauge and communicates with the bottom of the fine filter tank.

4. An automatic inflation device for a high-pressure gas cylinder according to claim 3, characterized in that the outlet line of the fine filter is connected to the inflation line through a pressure retaining valve, and the safety valve is installed in the inflation line in front of the pressure regulating valve.

5. The automatic inflating device for the high pressure gas cylinder as claimed in claim 1, wherein a wireless pressure transmitter is further installed in the inflation line between the safety valve and the pressure switch, and the wireless pressure transmitter is connected with a wireless pressure receiver installed in a computer through a wireless signal.

6. The automatic inflating device for high pressure gas cylinders according to claim 1, characterized in that a wireless remote control receiver is further installed in the power distribution box, and the wireless remote control receiver can be connected with a remote controller in the hand of an operator through wireless signals.

7. The automatic inflating device for the high-pressure gas cylinder according to claim 1, wherein the protective cover is formed by connecting two cover bodies provided with semicircular inner cavities in an involutory mode through a hinge and a buckle, and the inner cavities of the involutory two cover bodies are larger than the outer wall of the gas cylinder; the rear ends of the two cover bodies are provided with pressure relief flow guide windows.

8. An automatic inflation device for a high pressure gas cylinder according to claim 7, wherein a base is provided at the bottom of a cover in said shield.

9. The automatic inflating device for the high pressure gas cylinder as claimed in claim 1, wherein the two sides of the inflating valve are further provided with protective chains, the two ends of each protective chain are provided with pipe clamps, and the protective chains can be fixed outside the gas cylinder bayonet of the protective covers at the two ends of the inflating valve and outside the inflating pipeline through the pipe clamps at the two ends.

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