Gas filling equipment

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By introducing structures such as air intake pipe, check valve, exhaust valve and gas pressure gauge into the gas filling equipment, the problem of reflow explosion caused by excessive air pressure in the gas storage cylinder is solved, and a safe and practical gas filling process is achieved. Ensures safety and convenience of operation.

CN222352083UActive Publication Date: 2025-01-14DALIAN KERUI GAS CO LTD

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Patent Information

Application Number: CN202420654268.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-04-01
Publication Date: 2025-01-14
Estimated Expiration: 2034-04-01

AI Technical Summary

Technical Problem

During the inflation process of existing gas filling equipment, when the air pressure in the gas storage cylinder is too high, the device will easily cause gas backflow, causing explosion, and lack effective gas collection and pressure measurement functions, which affects safety and practicality.

Method used

A gas filling device is designed, including air intake pipe, one-way valve, conveying pipe, exhaust valve, air pressure gauge and opening and closing door. Through structures such as sealing balls and telescopic springs, gas return is prevented and automatically when the air pressure is too high. Exhaust excess gas, which is convenient for observing the air pressure and repair.

Benefits of technology

It improves the safety performance of the equipment, prevents gas return and explosion, and realizes automatic collection of gas and pressure measurement. It is simple to operate, easy to use and strong practicality.

✦ Generated by Eureka AI based on patent content.

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Figure CN222352083U_ABST

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Abstract

The utility model discloses gas filling equipment which comprises a shell, the left side of the shell is fixedly connected with a gas inlet pipe, one end of the gas inlet pipe is fixedly connected with a one-way valve in the shell, the other end of the one-way valve is fixedly connected with a conveying pipe, and the other end of the conveying pipe is arranged on the outer side of the shell. A first exhaust pipe is fixedly connected to the lower portion of the conveying pipe, an exhaust valve is fixedly connected to the lower portion of the first exhaust pipe, gas filling and backflow prevention are facilitated by arranging the gas inlet pipe, the one-way valve and the conveying pipe, and when the gas pressure in the gas storage bottle is too large, the gas storage bottle can be filled with gas conveniently by arranging the first exhaust pipe, the exhaust valve and the second exhaust pipe. By arranging the air pressure meter, the air pressure in the air storage bottle can be observed conveniently, and the device is high in safety performance, capable of observing the air pressure condition in the air storage bottle at any time, easy to operate, convenient to use and high in practicability.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of gas filling, in particular to a gas filling device. Background Art

[0002] Before filling compressed gas cylinders, each cylinder must be checked to prevent various accidents during the filling process or during transportation, storage, and use due to mixing, misloading, replacement, scrapping, or over-service. The principle for determining the filling quantity is that the internal pressure of the gas in the cylinder should not exceed its nominal working pressure at the reference temperature.

[0003] The prior art discloses a gas safety filling device, which, through the one-way mechanism, when the airflow flows through the valve body, pushes the ball close to the bottom end of the groove, so that the ball cannot block the opening of the groove, so that the gas can flow out through the groove and the through groove to fill the gas cylinder with gas, and when the air pump stops inflating, the pressure in the gas cylinder is greater than the air pressure, so that the gas will be discharged outward, and when the gas flows back to the valve body, the airflow pushes the ball back to the opening of the groove, so that the ball blocks the groove to prevent gas reflux, and the pressure relief device arranged at one end of the C-shaped tube close to the through groove The one-way mechanism 2 can make the gas refluxed in the gas cylinder return to the gas supply pipe through the one-way mechanism 2, while preventing the gas from entering the C-shaped tube when the gas supply pipe supplies gas and affecting the operation of the pressure relief mechanism. Through the set pressure relief mechanism, when the gas pressure in the gas cylinder is too high, the gas pressure pushes the slider to slide in the slide groove, so that the reflux hole on the outer wall of the limit column leaks out, so that the gas enters the C-shaped tube through the reflux hole, and then returns to the gas supply pipe through the one-way mechanism 2, so as to avoid the gas pressure in the gas cylinder being too high.

[0004] However, the shortcoming of the above technical solution is that when the gas pressure in the gas cylinder is too high during the inflation process, it will flow back through the C-shaped tube. The reflux gas will flow in the opposite direction of the inflation gas, and the gases will collide, which may easily cause the device to explode and cause danger to the staff. Therefore, it is necessary to design a gas filling equipment with stronger safety performance, which can collect the exhausted gas, measure the gas pressure in the gas cylinder and has strong practicality. Summary of the invention

[0005] The purpose of the utility model is to provide a gas filling device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a gas filling device, comprising a shell, an air intake pipe is fixedly connected to the left side of the shell, one end of the air intake pipe is fixedly connected to a one-way valve in the shell, the other end of the one-way valve is fixedly connected to a delivery pipe, the other end of the delivery pipe is outside the shell, a first exhaust pipe is fixedly connected to the bottom of the delivery pipe, an exhaust valve is fixedly connected to the bottom of the first exhaust pipe, the other end of the exhaust valve is fixedly connected to a second exhaust pipe, a pressure gauge is fixedly connected to the top of the shell, the pressure gauge is connected to the delivery pipe, and a switch door is hinged on one side of the shell.

[0007] According to the above technical solution, the one-way valve includes a first protective shell, a first sliding groove is opened in the first protective shell, two first straight grooves are opened on both sides of the first sliding groove, a placement groove is opened above the first sliding groove, and a sealing ball is slidably connected in the first sliding groove.

[0008] According to the above technical solution, the size of the sealing ball is larger than the two first straight grooves, and the size of the placement groove matches the size of the sealing ball.

[0009] According to the above technical solution, the exhaust valve includes a second protective shell, a second slide groove is opened in the second protective shell, two second straight-through grooves are opened on both sides of the second slide groove, two support rods are fixedly connected at the bottom of the second slide groove, the other ends of the two support rods are fixedly connected to a fixed plate, a first telescopic spring is fixedly connected to the top of the fixed plate, the other end of the first telescopic spring is fixedly connected to a sealing plate, and the sealing plate is larger than the second straight-through groove.

[0010] According to the above technical solution, a through hole is opened in the middle of the fixing plate, a fixing rod is slidably connected in the through hole, one end of the fixing rod is fixedly connected to the sealing plate, and the fixing rod is sleeved with the first telescopic spring.

[0011] According to the above technical solution, a first slot is opened on one side of the switch door, a second telescopic spring is fixedly connected in the first slot, the other end of the second telescopic spring is fixedly connected to an L-shaped rod, and one end of the L-shaped rod is fixedly connected to a swing block outside the first slot.

[0012] According to the above technical solution, a corresponding slot is opened on one side of the shell, and the other end of the L-shaped rod is engaged with the slot outside the first notch.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model, by providing an air inlet pipe, a one-way valve and a delivery pipe, facilitates gas filling and prevents backflow; by providing a first exhaust pipe, an exhaust valve and a second exhaust pipe, when the air pressure in the gas cylinder is too high, the exhaust valve will automatically open to discharge the excess gas for separate collection; by providing a pressure gauge, it is convenient to observe the size of the air pressure in the gas cylinder; by providing a switch door, it is convenient to repair the inside of the device; the device has strong safety performance, can always observe the air pressure in the bottle, is simple to operate, easy to use and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0017] Figure 3 The utility model Figure 1 Sectional view at AA in the figure;

[0018] Figure 4 The utility model Figure 2 A in the enlarged view;

[0019] Figure 5 The utility model Figure 2 The enlarged view of point B in the figure;

[0020] In the figure: 1, shell, 2, air inlet pipe, 3, one-way valve, 301, first protective shell, 302, first sliding groove, 303, first straight groove, 304, placement groove, 305, sealing ball, 4, delivery pipe, 5, first exhaust pipe, 6, exhaust valve, 601, second protective shell, 602, second sliding groove, 603, second straight groove, 604, support rod, 605, fixing plate, 606, first telescopic spring, 607, sealing plate, 608, through hole, 609, fixing rod, 7, second exhaust pipe, 8, barometer, 9, switch door, 10, first notch, 11, second telescopic spring, 12, L-shaped rod, 13, swing block, 14, slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution: a gas filling device, including a shell 1, an air intake pipe 2 is fixedly connected to the left side of the shell 1, one end of the air intake pipe 2 is fixedly connected to a one-way valve 3 in the shell 1, the other end of the one-way valve 3 is fixedly connected to a delivery pipe 4, the other end of the delivery pipe 4 is outside the shell 1, a first exhaust pipe 5 is fixedly connected below the delivery pipe 4, an exhaust valve 6 is fixedly connected below the first exhaust pipe 5, the other end of the exhaust valve 6 is fixedly connected to a second exhaust pipe 7, and a gas outlet is fixedly connected to the top of the shell 1. A pressure gauge 8 is connected to the delivery pipe 4. A switch door 9 is hinged on one side of the housing 1. The inlet pipe 2, the one-way valve 3 and the delivery pipe 4 are provided to facilitate gas filling and prevent backflow. The first exhaust pipe 5, the exhaust valve 6 and the second exhaust pipe 7 are provided. When the air pressure in the gas cylinder is too high, the exhaust valve 6 will automatically open to discharge the excess gas for separate collection. The pressure gauge 8 is provided to facilitate observation of the air pressure in the gas cylinder. The switch door 9 is provided to facilitate maintenance of the interior of the device.

[0023] according to Figure 4 As shown, the one-way valve 3 includes a first protective shell 301, a first sliding groove 302 is formed in the first protective shell 301, two first straight grooves 303 are formed on both sides of the first sliding groove 302, a placement groove 304 is formed above the first sliding groove 302, and a sealing ball 305 is slidably connected in the first sliding groove 302;

[0024] according to Figure 4 As shown, the size of the sealing ball 305 is larger than the two first straight grooves 303, and the size of the placement groove 304 matches the size of the sealing ball 305. By providing the sealing ball 305, the sealing ball 305 is pushed into the placement groove 304 by the gas during inflation. After the inflation is completed, the sealing ball 305 falls, and the reflux gas pushes the sealing ball 305 to fit with the first straight groove 303 to prevent gas reflux;

[0025] according to Figure 5As shown, the exhaust valve 6 includes a second protective shell 601, a second slide groove 602 is opened in the second protective shell 601, two second straight grooves 603 are opened on both sides of the second slide groove 602, two support rods 604 are fixedly connected at the lower part of the second slide groove 602, the other ends of the two support rods 604 are fixedly connected to a fixing plate 605, a first telescopic spring 606 is fixedly connected to the upper part of the fixing plate 605, a sealing plate 607 is fixedly connected to the other end of the first telescopic spring 606, the sealing plate 607 is larger than the second straight groove 603, and the first telescopic spring 606 is provided, the first telescopic spring 606 will push the sealing plate 607 to fit closely with the second straight groove 603, when the air pressure is too high, the air pressure is greater than the elastic force of the first telescopic spring 606, the air pressure pushes the sealing plate 607, so that the sealing plate 607 moves in the direction of the first telescopic spring 606, and the excess gas can be discharged;

[0026] according to Figure 4 As shown, a through hole 608 is opened in the middle of the fixing plate 605, and a fixing rod 609 is slidably connected in the through hole 608. One end of the fixing rod 609 is fixedly connected to the sealing plate 607, and the fixing rod 609 is sleeved with the first telescopic spring 606. The fixing rod 609 is provided to play a sliding limit role on the sealing plate 607;

[0027] according to Figure 3 As shown, a first slot 10 is opened on one side of the switch door 9, a second telescopic spring 11 is fixedly connected inside the first slot 10, an L-shaped rod 12 is fixedly connected to the other end of the second telescopic spring 11, and a swing block 13 is fixedly connected to one end of the L-shaped rod 12 outside the first slot 10;

[0028] according to Figure 3 As shown, a corresponding slot 14 is opened on one side of the shell 1, and the other end of the L-shaped rod 12 is engaged with the slot 14 outside the first notch 10. By providing a second telescopic spring 11, the second telescopic spring 11 pushes the L-shaped rod 12 to engage with the slot 14, which plays a locking role. When opening the switch door 9, the sliding swing block 13 drives the L-shaped rod 12 to move in the direction of the second telescopic spring 11, that is, the L-shaped rod 12 and the slot 14 are staggered with each other, and the switch door 9 can be opened.

[0029] When using the utility model, the delivery pipe 4 is connected to the gas cylinder, and the air inlet pipe 2 is connected to the charging device. By providing the air inlet pipe 2, the one-way valve 3 and the delivery pipe 4, it is convenient to fill the gas and prevent backflow. By providing the first exhaust pipe 5, the exhaust valve 6 and the second exhaust pipe 7, when the air pressure in the gas cylinder is too high, the exhaust valve 6 will automatically open to discharge the excess gas for separate collection. By providing the barometer 8, it is convenient to observe the size of the air pressure in the gas cylinder. By providing the switch door 9, it is convenient to repair the inside of the device. The device has strong safety performance, can always observe the air pressure in the bottle, is simple to operate, easy to use, and has strong practicality.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gas filling device, comprising a housing (1), characterized in that: An air intake pipe (2) is fixedly connected to the left side of the shell (1); one end of the air intake pipe (2) is fixedly connected to a one-way valve (3) inside the shell (1); the other end of the one-way valve (3) is fixedly connected to a delivery pipe (4); the other end of the delivery pipe (4) is outside the shell (1); a first exhaust pipe (5) is fixedly connected below the delivery pipe (4); an exhaust valve (6) is fixedly connected below the first exhaust pipe (5); the other end of the exhaust valve (6) is fixedly connected to a second exhaust pipe (7); a pressure gauge (8) is fixedly connected to the top of the shell (1); the pressure gauge (8) is connected to the delivery pipe (4); and a switch door (9) is hinged on one side of the shell (1).

2. A gas filling device according to claim 1, characterized in that: The one-way valve (3) comprises a first protective shell (301), a first sliding groove (302) is formed in the first protective shell (301), two first straight grooves (303) are formed on both sides of the first sliding groove (302), a placement groove (304) is formed above the first sliding groove (302), and a sealing ball (305) is slidably connected in the first sliding groove (302).

3. A gas filling device according to claim 2, characterized in that: The size of the sealing ball (305) is larger than the two first straight grooves (303), and the size of the placement groove (304) matches the size of the sealing ball (305).

4. A gas filling device according to claim 3, characterized in that: The exhaust valve (6) comprises a second protective shell (601), a second slide groove (602) is opened in the second protective shell (601), two second straight grooves (603) are opened on both sides of the second slide groove (602), two support rods (604) are fixedly connected at the bottom of the second slide groove (602), the other ends of the two support rods (604) are fixedly connected to a fixed plate (605), a first telescopic spring (606) is fixedly connected at the top of the fixed plate (605), the other end of the first telescopic spring (606) is fixedly connected to a sealing plate (607), and the sealing plate (607) is larger than the second straight groove (603).

5. A gas filling device according to claim 4, characterized in that: A through hole (608) is formed in the middle of the fixing plate (605), a fixing rod (609) is slidably connected in the through hole (608), one end of the fixing rod (609) is fixedly connected to the sealing plate (607), and the fixing rod (609) is sleeved with the first telescopic spring (606).

6. A gas filling device according to claim 5, characterized in that: A first notch (10) is formed on one side of the switch door (9), a second telescopic spring (11) is fixedly connected inside the first notch (10), the other end of the second telescopic spring (11) is fixedly connected to an L-shaped rod (12), and one end of the L-shaped rod (12) is fixedly connected to a swing block (13) outside the first notch (10).

7. A gas filling device according to claim 6, characterized in that: A corresponding slot (14) is provided on one side of the housing (1), and the other end of the L-shaped rod (12) is engaged with the slot (14) outside the first notch (10).