One-way liquefied industrial gas filling pipeline

Abstract

The utility model relates to the technical field of gas pipelines, in particular to a one-way liquefied industrial gas filling pipeline which comprises a one-way valve, an accelerating pipe set arranged at the rear end of the one-way valve and a gas conveying pipeline arranged at the output end of the accelerating pipe set, and the accelerating pipe set comprises a first accelerating pipe communicating with the one-way valve and a second accelerating pipe communicating with the first accelerating pipe; the second accelerating pipe is communicated with the gas conveying pipeline, a conical pipe with the diameter gradually decreasing towards the second accelerating pipe is arranged in the first accelerating pipe, when liquid gas flows into the first accelerating pipe through the one-way valve, the liquid gas passes through the conical pipe, and due to the fact that the diameter of the conical pipe is gradually decreasing towards the second accelerating pipe, the liquid gas flows into the second accelerating pipe. Therefore, the liquid gas flowing through the conical pipe is affected by the narrow pipe effect, the liquid gas is accelerated to flow into the second accelerating pipe and then flows into the gas conveying pipeline through the second accelerating pipe, the purpose of increasing the flow speed of the liquid gas after passing through the one-way valve is achieved, and the liquid gas output efficiency of the gas conveying pipeline is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gas pipelines, in particular to a one-way liquefied industrial gas filling pipeline. BACKGROUND

[0002] The liquefied industrial gas filling pipeline is usually part of a liquid gas filling supply system, which also includes a liquid gas storage tank, a filling pump and other key components. The principle of the filling pipeline is based on the physical properties of liquid gas, and the liquid gas is safely and efficiently transferred from the storage tank to the target container through the pipeline.

[0003] In the prior art, in order to prevent the backflow of liquid gas in the pipeline, a one-way valve is usually installed at one end of the pipeline, but due to the existence of a throttling element inside the one-way valve, the flow rate in the pipeline after the one-way valve may gradually decrease due to the recovery of pressure and the existence of frictional resistance. Therefore, the application provides a one-way liquefied industrial gas filling pipeline for improving the flow rate of liquid gas after passing through the one-way valve. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the application aims to provide a one-way liquefied industrial gas filling pipeline for improving the flow rate of liquid gas after passing through the one-way valve.

[0005] The above-mentioned purpose of the application is achieved by the following technical scheme: a one-way liquefied industrial gas filling pipeline, comprising a one-way valve, an acceleration pipe group arranged at the rear end of the one-way valve, and a gas conveying pipeline arranged at the output end of the acceleration pipe group, wherein the acceleration pipe group comprises a first acceleration pipe connected to the one-way valve and a second acceleration pipe connected to the first acceleration pipe, and the second acceleration pipe is connected to the gas conveying pipeline at an end away from the first acceleration pipe, and the first acceleration pipe is internally provided with a tapered pipe with a diameter gradually decreasing towards the second acceleration pipe.

[0006] By adopting the above-mentioned technical scheme, when the liquid gas flows into the first acceleration pipe through the one-way valve, the liquid gas passes through the tapered pipe, and due to the tapered pipe with a diameter gradually decreasing towards the second acceleration pipe, the liquid gas flowing through the tapered pipe is affected by the effect of the narrow pipe (when the fluid passes through the narrow channel, the flow rate increases and the static pressure decreases. In the narrow channel, the fluid molecules are limited by the side wall, resulting in an increase in flow rate and a decrease in fluid density, and a decrease in static pressure), so that the liquid gas accelerates to flow into the second acceleration pipe, and then flows into the gas conveying pipeline through the second acceleration pipe, thereby achieving the purpose of improving the flow rate of the liquid gas after passing through the one-way valve, and improving the efficiency of the gas conveying pipeline in outputting the liquid gas.

[0007] Further, the second acceleration pipe is internally provided with a spiral fin arranged along the length direction of the second acceleration pipe.

[0008] By adopting the above technical solution and setting the spiral blades, the liquid gas accelerated by the first acceleration tube flows into the second acceleration tube and rotates along the spiral blades to form a vortex. As the liquid gas flows, the rotation speed of the liquid gas gradually increases, further improving the efficiency of the gas pipeline in outputting liquid gas.

[0009] Furthermore, a flange connection structure is provided between the first acceleration tube and the one-way valve, and the first acceleration tube and the one-way valve are connected through the flange connection structure.

[0010] Furthermore, the flange connection structure includes a first flange fixedly mounted on the first acceleration tube, a second flange mounted on the one-way valve, and fixing bolts passing through the first flange and the second flange and threadedly connected to the first flange and the second flange.

[0011] By adopting the above technical solution, the first and second flanges are fastened together with fixing bolts, thus achieving the connection between the first acceleration pipe and the one-way valve. This connection method eliminates the need for complex welding or bonding processes, significantly saving installation time and reducing installation difficulty. Furthermore, when maintenance or replacement of pipe components is required, disassembly can be easily achieved by simply loosening the bolts, improving maintenance convenience.

[0012] Furthermore, a sealing gasket is provided between the first flange and the second flange.

[0013] By adopting the above technical solution, the airtightness between the first acceleration tube and the one-way valve is greatly improved by setting the sealing gasket.

[0014] Furthermore, a connecting component is provided between the gas delivery pipe and the second acceleration pipe, and the gas delivery pipe is connected to the second acceleration pipe through the connecting component.

[0015] Furthermore, the connecting assembly includes a necked tube with a diameter gradually decreasing toward the gas transmission pipeline and a connecting tube fixedly connected to the end of the necked tube near the gas transmission pipeline. The end of the necked tube away from the gas transmission pipeline is fixedly connected to a second acceleration tube, and the gas transmission pipeline is threadedly connected to the connecting tube.

[0016] By adopting the above technical solution, the gas transmission pipeline is connected to the second acceleration tube through the connecting component, so that the liquid gas flowing into the second acceleration tube flows into the gas transmission pipeline through the constriction tube and the connecting tube. The liquid gas flowing through the constriction tube is again affected by the narrow tube effect, accelerating its flow into the gas transmission pipeline, which further improves the efficiency of the gas transmission pipeline in outputting liquid gas.

[0017] Furthermore, the diameters of both the first and second acceleration tubes are more than three times the diameter of the gas transmission pipeline.

[0018] By adopting the above technical solution, since the gas pipeline is a gas pipeline with a small diameter, setting the diameter of the first acceleration tube and the diameter of the second acceleration tube to more than three times the diameter of the gas pipeline makes it easier for production personnel to install the tapered tube in the first acceleration tube and the spiral blade in the second acceleration tube.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] By configuring the acceleration tube assembly, when liquid gas flows through the one-way valve into the first acceleration tube, it passes through a conical tube. Since the diameter of the conical tube gradually decreases towards the second acceleration tube, the liquid gas flowing through it is affected by the septum effect (when fluid passes through a narrow channel, the flow velocity increases and the static pressure decreases. In a narrow channel, fluid molecules are restricted by the sidewalls, leading to an increase in flow velocity, which in turn reduces the fluid density and decreases the static pressure). This causes the liquid gas to accelerate into the second acceleration tube. The liquid gas flowing into the second acceleration tube rotates along the spiral blades, forming a vortex. As the liquid gas flows, its rotational speed gradually increases before flowing into the gas delivery pipeline. This achieves the goal of increasing the flow velocity of the liquid gas after passing through the one-way valve, thereby improving the efficiency of the gas delivery pipeline in outputting liquid gas. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0022] Figure 2 It is along Figure 1 A cross-sectional view along line AA in the middle.

[0023] Reference numerals: 1. One-way valve; 2. Accelerator assembly; 20. First accelerator tube; 21. Second accelerator tube; 22. Tapered tube; 23. Spiral blade; 3. Gas transmission pipeline; 4. Flange connection structure; 40. First flange; 41. Second flange; 42. Fixing bolt; 43. Sealing gasket; 5. Connecting assembly; 50. Necked tube; 51. Connecting tube. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] Example, refer to Figure 1 , Figure 2A one-way liquefied industrial gas filling pipeline includes a one-way valve 1, an acceleration tube assembly 2 disposed at the rear end of the one-way valve 1, and a gas delivery pipe 3 disposed at the output end of the acceleration tube assembly 2. The acceleration tube assembly 2 includes a first acceleration tube 20 connected to the one-way valve 1 and a second acceleration tube 21 connected to the first acceleration tube 20. The end of the second acceleration tube 21 away from the first acceleration tube 20 is connected to the gas delivery pipe 3. The first acceleration tube 20 has a tapered tube 22 with a diameter gradually decreasing towards the second acceleration tube 21 inside. The second acceleration tube 21 has a spiral blade 23 disposed along the length of the second acceleration tube 21. When liquid gas flows into the first acceleration tube 20 through the one-way valve 1, the liquid gas passes through the tapered tube 22. Since the diameter of the tapered tube 22 gradually decreases towards the second acceleration tube 21, this causes the liquid gas flowing through the tapered tube 22 to... The gas is affected by the septum effect (when a fluid passes through a narrow channel, the velocity increases and the static pressure decreases. In a narrow channel, fluid molecules are restricted by the sidewalls, leading to an increase in velocity, which in turn reduces the fluid density and decreases the static pressure), causing the liquid gas to accelerate into the second acceleration tube 21 and then flow into the gas delivery pipe 3. This achieves the purpose of increasing the velocity of the liquid gas after passing through the one-way valve 1, thereby improving the efficiency of the gas delivery pipe 3 in outputting liquid gas. Through the arrangement of the spiral blade 23, the liquid gas accelerated by the first acceleration tube 20 flows into the second acceleration tube 21 and rotates along the spiral blade 23 to form a vortex. As the liquid gas flows, the rotation speed of the liquid gas gradually increases, further improving the efficiency of the gas delivery pipe 3 in outputting liquid gas.

[0026] In this embodiment, a flange connection structure 4 is provided between the first acceleration pipe 20 and the one-way valve 1. The first acceleration pipe 20 and the one-way valve 1 are connected through the flange connection structure 4. The flange connection structure 4 includes a first flange 40 fixedly mounted on the first acceleration pipe 20, a second flange 41 mounted on the one-way valve 1, and fixing bolts 42 passing through the first flange 40 and the second flange 41 and threadedly connected to the first flange 40 and the second flange 41. The first flange 40 and the second flange 41 are fastened together by the fixing bolts 42, thereby realizing the connection between the first acceleration pipe 20 and the one-way valve 1. This connection method does not require complex welding or bonding processes, which greatly saves installation time and reduces installation difficulty. At the same time, when it is necessary to repair or replace pipe components, it can be easily disassembled by simply loosening the bolts, which improves the convenience of maintenance.

[0027] In this embodiment, a sealing gasket 43 is provided between the first flange 40 and the second flange 41. The setting of the sealing gasket 43 greatly improves the airtightness between the first acceleration pipe 20 and the one-way valve 1.

[0028] In this embodiment, a connecting component 5 is provided between the gas delivery pipe 3 and the second acceleration pipe 21. The gas delivery pipe 3 is connected to the second acceleration pipe 21 through the connecting component 5. The connecting component 5 includes a constriction tube 50 with a diameter gradually decreasing towards the gas delivery pipe 3 and a connecting pipe 51 fixedly connected to one end of the constriction tube 50 near the gas delivery pipe 3. The end of the constriction tube 50 away from the gas delivery pipe 3 is fixedly connected to the second acceleration pipe 21. The gas delivery pipe 3 is threadedly connected to the connecting pipe 51. The gas delivery pipe 3 is connected to the second acceleration pipe 21 through the connecting component 5, so that the liquid gas flowing into the second acceleration pipe 21 flows into the gas delivery pipe 3 through the constriction tube 50 and the connecting pipe 51. The liquid gas flowing through the constriction tube 50 is again affected by the narrow tube effect and flows into the gas delivery pipe 3 at an accelerated rate, further improving the efficiency of the gas delivery pipe 3 in outputting liquid gas.

[0029] In this embodiment, the diameter of the first accelerating tube 20 and the diameter of the second accelerating tube 21 are both more than three times the diameter of the gas transmission pipe 3. Since the gas transmission pipe 3 is a gas pipe with a small diameter, setting the diameter of the first accelerating tube 20 and the diameter of the second accelerating tube 21 to more than three times the diameter of the gas transmission pipe 3 makes it easier for production personnel to install the tapered tube 22 in the first accelerating tube 20 and the spiral blade 23 in the second accelerating tube 21.

[0030] Specific implementation process: When the liquid gas flows through the one-way valve 1 into the first acceleration tube 20, the liquid gas passes through the conical tube 22. Since the diameter of the conical tube 22 gradually decreases towards the second acceleration tube 21, the liquid gas flowing through the conical tube 22 is affected by the narrow tube effect, causing the liquid gas to accelerate into the second acceleration tube 21. The liquid gas flowing into the second acceleration tube 21 rotates and advances along the spiral blade 23 to form a vortex. As the liquid gas flows, the rotation speed of the liquid gas gradually increases. Then, the liquid gas passes through the constriction tube 50 and is again affected by the narrow tube effect, accelerating into the gas transmission pipeline 3.

[0031] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A one-way liquefied industrial gas filling line, characterized in that, The application relates to a one-way valve (1), an acceleration pipe group (2) arranged at the rear end of the one-way valve (1), and a gas conveying pipe (3) arranged at the output end of the acceleration pipe group (2), wherein the acceleration pipe group (2) comprises a first acceleration pipe (20) communicated with the one-way valve (1) and a second acceleration pipe (21) communicated with the first acceleration pipe (20), the second acceleration pipe (21) is communicated with the gas conveying pipe (3) at the end far from the first acceleration pipe (20), and the first acceleration pipe (20) is internally provided with a tapered pipe (22) arranged towards the second acceleration pipe (21) and gradually decreasing in diameter.

2. A one-way liquefied industrial gas filling line according to claim 1, characterized in that, The second acceleration pipe (21) is internally provided with a helical blade (23) arranged along the length direction of the second acceleration pipe (21).

3. The one-way liquefied industrial gas filling line according to claim 1, wherein The first acceleration pipe (20) and the one-way valve (1) are provided with a flange connection structure (4), and the first acceleration pipe (20) and the one-way valve (1) are connected through the flange connection structure (4).

4. A one-way liquefied industrial gas filling line according to claim 3, wherein The flange connection structure (4) comprises a first flange plate (40) fixedly arranged on the first acceleration pipe (20), a second flange plate (41) arranged on the one-way valve (1), and a fixing bolt (42) penetrating through the first flange plate (40) and the second flange plate (41) and screw-connected to the first flange plate (40) and the second flange plate (41).

5. A one-way liquefied industrial gas filling line according to claim 4, wherein The first flange plate (40) and the second flange plate (41) are provided with a sealing gasket (43) therebetween.

6. A one-way liquefied industrial gas filling line according to claim 1, wherein The gas conveying pipe (3) and the second acceleration pipe (21) are provided with a connecting assembly (5), and the gas conveying pipe (3) is communicated with the second acceleration pipe (21) through the connecting assembly (5).

7. A one-way liquefied industrial gas filling line according to claim 6, characterized in that The connecting assembly (5) comprises a necking pipe (50) arranged towards the gas conveying pipe (3) and gradually decreasing in diameter, and a communicating pipe (51) fixedly connected to the necking pipe (50) at the end close to the gas conveying pipe (3), the necking pipe (50) is fixedly connected to the second acceleration pipe (21) at the end far from the gas conveying pipe (3), and the gas conveying pipe (3) is screw-connected to the communicating pipe (51).

8. The one-way liquefied industrial gas filling line according to claim 1, wherein The diameter of the first acceleration pipe (20) and the diameter of the second acceleration pipe (21) are all more than three times of the diameter of the gas conveying pipe (3).

Images