Device for recovering residual gas in gas cylinder

Abstract

The utility model relates to a device for recovering residual gas in a gas cylinder, which comprises a skid-mounted plate, and the upper surface of the skid-mounted plate is sequentially provided with a residual gas cylinder support frame for placing the residual gas cylinder, a gas-liquid separation component, a buffer component and a gas collection cylinder support frame for placing a gas collection cylinder; the gas-liquid separation assembly comprises a gas-liquid separation tank and a vacuum pump, one side of the bottom of the gas-liquid separation tank is connected with a residual gas recovery pipeline, and the center of the top of the gas-liquid separation tank is provided with a first pipeline communicated with an inlet of the vacuum pump; the buffering assembly comprises a buffering tank, one side of the bottom of the buffering tank is connected with a buffering pipeline, the other end of the buffering pipeline communicates with an outlet of the vacuum pump, a second pipeline is arranged in the center of the top of the buffering tank, the other end of the second pipeline is connected with a compressor, and an outlet of the compressor communicates with a gas conveying pipeline. According to the utility model, the residual gas in the gas cylinder can be safely and efficiently recovered into the gas collecting cylinder, so that the resource waste is reduced, the environmental pollution is prevented, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to a residual gas recovery device, in particular to a device for recovering residual gas in a gas cylinder, and belongs to the technical field of gas recovery equipment. Background Art

[0002] A gas cylinder refers to a type of movable pressure vessel with a bottle-shaped main structure, generally filled with gas (which can be compressed gas, liquefied gas, dissolved adsorbed gas, etc.). Existing gas cylinders or storage bottles are usually used to store gas under pressure, and when in use, they are discharged through the pressure applied inside.

[0003] However, when the gas in the gas cylinder is exhausted, there is often a certain amount of gas that cannot be fully utilized. This part of the residual gas is usually left in the gas cylinder, which not only wastes precious resources but also may pollute the environment. Therefore, it is necessary to design a device that can effectively recover the residual gas in the gas cylinder. Utility Model Content

[0004] The utility model mainly aims at the above problems existing in the prior art and provides a device for recovering residual gas in a gas cylinder.

[0005] The purpose of this utility model is mainly achieved through the following solutions:

[0006] A device for recovering residual gas in a gas cylinder, comprising a skid plate, the upper surface of which is sequentially provided with a residual gas bottle support frame for placing the residual gas bottle, a gas-liquid separation component, a buffer component and a gas collecting bottle support frame for placing the gas collecting bottle; the gas-liquid separation component comprises a gas-liquid separation tank and a vacuum pump, a bottom side of the gas-liquid separation tank is connected to a residual gas recovery pipeline, and a first pipeline connected to the inlet of the vacuum pump is provided in the center of the top of the gas-liquid separation tank; the buffer assembly comprises a buffer tank, a bottom side of the buffer tank is connected to a buffer pipeline, the other end of the buffer pipeline is connected to the outlet of the vacuum pump, a second pipeline is provided in the center of the top of the buffer tank, the other end of the second pipeline is connected to a compressor, and the outlet of the compressor is connected to a gas transmission pipeline.

[0007] Preferably, the residual gas bottle support frame and the gas collecting bottle support frame have the same structure, both including a base plate, a support rod and a locking assembly, the bottom of one side of the support rod is fixedly connected to one side of the base plate, one side of the locking assembly is fixedly connected to the upper part of one side of the support rod, and the bottom of the support rod is fixedly connected to the skid plate.

[0008] Preferably, at least one limiting clip is provided on the upper surface of the base plate.

[0009] Preferably, the locking assembly includes a first locking plate and a second locking plate, one side of the first locking plate is fixedly connected to the support rod, the side of the first locking plate opposite to the second locking plate is provided with a first limiting groove corresponding to the limiting clamp, and the side of the second locking plate is provided with a second limiting groove opposite to the first limiting groove, and one end of the first locking plate and the second locking plate are movably connected by a rotating shaft, and the other end of the first locking plate and the second locking plate are fixedly connected by a locking buckle.

[0010] Preferably, the inner walls of the first limiting groove and the second limiting groove are both provided with buffer pads.

[0011] Preferably, a liquid outlet is also provided on one side of the bottom of the gas-liquid separation tank.

[0012] Preferably, a plurality of groups of demisters are installed in sequence from bottom to top inside the gas-liquid separation tank.

[0013] Preferably, a guide plate is provided on the top of the gas-liquid separation tank, the guide plate is in an arc-shaped structure, and the first pipeline is connected to the middle part of the guide plate after extending into the gas-liquid separation tank.

[0014] Preferably, a drainage plate is provided at the bottom of the gas-liquid separation tank.

[0015] Therefore, compared with the prior art, the utility model has the following advantages:

[0016] (1) The utility model can complete the transportation or installation of the entire device in a relatively short time by providing a skid-mounted plate, and a residual gas bottle support frame, a gas-liquid separation component, a buffer component, and a gas collection bottle support frame integrated on the skid-mounted plate, thereby significantly improving work efficiency and saving a large amount of construction time and labor costs;

[0017] (2) The utility model provides a gas-liquid separation tank and a vacuum pump, and the vacuum pump can extract the residual gas in the residual gas bottle through the pipeline, and the extracted residual gas can be separated from the liquid residue that may exist in the gas-liquid separation tank. On the one hand, the quality of the collected residual gas can be improved, and on the other hand, water vapor or other liquid components can be prevented from accumulating in the vacuum pump, which may block the pipeline or reduce the diameter of the pipeline, resulting in a decrease in the extraction efficiency or damage to the vacuum pump;

[0018] (3) The utility model provides a buffer tank and a compressor, wherein the buffer tank is used to temporarily store the separated gas, and the compressor is used to compress the residual gas and pump the compressed residual gas into the gas collecting bottle;

[0019] (4) The utility model has a simple structure and is easy to operate. It can effectively recover the residual gas in the residual gas bottle, reduce resource waste, and avoid environmental pollution caused by directly discharging the residual gas into the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the gas-liquid separation tank in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the support frame for the remaining gas cylinder in the utility model;

[0023] Figure 4 The utility model is an installation schematic diagram of a surplus gas cylinder support frame with surplus gas cylinders placed thereon.

[0024] Illustrations: 1-skid plate, 2-residual gas bottle support frame, 3-gas collecting bottle support frame, 4-gas-liquid separation tank, 5-vacuum pump, 6-residual gas recovery pipeline, 7-first pipeline, 8-buffer tank, 9-buffer pipeline, 10-second pipeline, 11-compressor, 12-gas transmission pipeline, 13-bottom plate, 14-support rod, 15-limiting clamp, 16-first locking plate, 17-second locking plate, 18-first limiting groove, 19-second limiting groove, 20-rotating shaft, 21-locking buckle, 22-buffer pad, 23-liquid outlet, 24-demister, 25-guide plate, 26-guide plate. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0026] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0027] Embodiment 1:

[0028] like Figure 1As shown, the utility model provides a technical solution, a device for recovering residual gas in a gas cylinder, comprising a skid plate 1, on the upper surface of the skid plate 1 are installed, from left to right, a residual gas bottle support frame 2 for placing the residual gas bottle, a gas-liquid separation component, a buffer component and a gas collecting bottle support frame 3 for placing the gas collecting bottle, the residual gas bottle support frame 2, the gas-liquid separation component, the buffer component and the gas collecting bottle support frame 3 are all integrated on the upper surface of the skid plate 1, and the transportation or installation of the entire device can be completed in a relatively short time, thereby significantly improving work efficiency.

[0029] The above-mentioned gas-liquid separation component is composed of a gas-liquid separation tank 4 and a vacuum pump 5. The left side of the bottom of the gas-liquid separation tank 4 is connected to a residual gas recovery pipeline 6, and the top center of the gas-liquid separation tank 4 is provided with a first pipeline 7 connected to the inlet of the vacuum pump 5; the above-mentioned cache component includes a buffer tank 8, the left side of the bottom of the buffer tank 8 is connected to a buffer pipeline 9, the other end of the buffer pipeline 9 is connected to the outlet of the vacuum pump 5, the top center of the buffer tank 8 is connected to a second pipeline 10, the other end of the second pipeline 10 is connected to a compressor 11, and the outlet of the compressor 11 is connected to a gas pipeline 12.

[0030] A residual gas bottle is installed on the above-mentioned residual gas bottle support frame 2, and a gas collecting bottle is installed on the gas collecting bottle support frame 3, and the gas port of the residual gas bottle is connected with the residual gas recovery pipeline 6 through a connecting hose, and the gas port of the gas collecting bottle is connected with the gas supply pipeline 12 through a connecting hose, and a support plate should be provided on the skid plate 1 to support the residual gas recovery pipeline 6 and the gas supply pipeline 12, and manual valves and check valves should be installed on the residual gas recovery pipeline 6 and the gas supply pipeline 12, the manual valve is used to realize the ventilation and closing of the residual gas recovery pipeline 6 and the gas supply pipeline 12, and the check valve can prevent gas backflow.

[0031] In addition, the skid plate 1 should be equipped with a controller, such as a PLC controller or an industrial computer. The controller is electrically connected to the vacuum pump 5 and the compressor 11 and can control their operation. The specific models and specifications of the controller, vacuum pump 5 and compressor 11 need to be selected and determined according to the actual needs of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The specific structure and circuit of the controller are not within the scope of protection of this application, and those skilled in the art can derive them through common knowledge, conventional means or simple deduction in the field, so they will not be described here.

[0032] Embodiment 2:

[0033] like Figure 3 , 4As shown, the utility model provides another technical solution, a device for recovering residual gas in a gas cylinder, which is different from Example 1 in that the residual gas bottle support frame 2 and the gas collecting bottle support frame 3 have the same structure, both of which are composed of a base plate 13, a support rod 14 and a locking assembly. The support rod 14 is a U-shaped structure, the inner bottom of the support rod 14 is welded or bolted to one side of the base plate 13, one side of the locking assembly is welded or bolted to the inner upper part of the support rod 14, and the bottom of the support rod 14 is fixedly connected to the skid plate 1 by bolts.

[0034] Specifically, at least one limiting clamp 15 is provided on the upper surface of the bottom plate 13. In the present embodiment, two limiting clamps 15 are provided. The limiting clamp 15 is composed of a base plate at the bottom and a plurality of enclosures located around the base plate. The base plate and the bottom plate 13 are bolted together. The enclosures and the base plate are bent integrally. By setting a plurality of enclosures, the bottom of the gas collecting bottle or the residual gas bottle can be limited to avoid shaking of the gas cylinder during use.

[0035] Specifically, the locking assembly consists of a first locking plate 16 and a second locking plate 17, one side of the first locking plate 16 is connected to the support rod 14 by bolts, and the side opposite to the first locking plate 16 and the second locking plate 17 is provided with a first limiting groove 18 corresponding to the limiting clamp 15, and the side of the second locking plate 17 is provided with a second limiting groove 19 opposite to the first limiting groove 18, and one end of the first locking plate 16 and the second locking plate 17 is movably connected by a rotating shaft 20, and the other end of the first locking plate 16 and the second locking plate 17 is fixedly connected by a locking buckle 21. The locking buckle 21 is a prior art and can be purchased on the market, and its specific structure is not repeated here.

[0036] Specifically, the inner walls of the first limiting groove 18 and the second limiting groove 19 are both bonded with a buffer pad 22 made of rubber.

[0037] When in use, first loosen the locking buckle 21, then place the gas cylinder on the corresponding limiting clamp 15, and then rotate the second locking plate 17 through the rotating shaft so that the inner walls of the first limiting groove 18 and the second limiting groove 19 clamp the upper part of the gas cylinder, and then buckle the locking buckle 21 to achieve the installation of the gas cylinder.

[0038] Embodiment 3:

[0039] like Figure 1 , 2 As shown, the utility model provides another technical solution, a device for recovering residual gas in a gas cylinder, which is different from Example 1 in that a liquid outlet 23 is further provided on the right side of the bottom of the gas-liquid separation tank 4.

[0040] Specifically, a plurality of groups of demisters 24 are installed in sequence from bottom to top inside the gas-liquid separation tank 4. The demisters 24 are, from bottom to top, an inertial demister, a wire mesh demister, and a fiber bed demister. Through the purification of the three-layer demisters, the residual gas can be fully separated into gas and liquid. The above-mentioned demisters are all existing technologies, and their specific structures will not be repeated here.

[0041] Specifically, a guide plate 25 is provided on the top of the gas-liquid separation tank 4. The guide plate 25 has an arc-shaped structure, and the first pipeline 7 is connected to the middle part of the guide plate 25 after extending into the gas-liquid separation tank 4. The setting of the guide plate 25 facilitates the gas to flow out from the first pipeline 7.

[0042] Specifically, a guide plate 26 inclined toward the liquid outlet 23 is provided at the bottom of the gas-liquid separation tank 4 . The setting of the guide plate 26 facilitates the liquid in the gas-liquid separation tank 4 to be guided to the liquid outlet 23 .

[0043] The utility model provides a device for recovering residual gas in a gas cylinder. Through the skid-mounted plate, the residual gas bottle support frame, the gas-liquid separation component, the buffer component and the gas collecting bottle support frame integrated on the skid-mounted plate, the handling or installation work of the entire device can be completed in a short time, which significantly improves the work efficiency and saves a lot of construction time and labor costs. Through the gas-liquid separation tank and the vacuum pump, the vacuum pump can extract the residual gas in the residual gas bottle through the pipeline, and the gas-liquid separation tank can separate the extracted residual gas from the liquid residue that may exist, which can improve the quality of the collected residual gas on the one hand, and avoid the accumulation of water vapor or other liquid components in the vacuum pump on the other hand, which may block the pipeline or reduce the diameter of the pipeline, resulting in reduced extraction efficiency or damage to the vacuum pump. Through the buffer tank and the compressor, the buffer tank is used for temporarily storing the separated gas, and the compressor is used for compressing the residual gas and pumping the compressed residual gas into the gas collecting bottle. The utility model has a simple structure and is easy to operate, can effectively recover the residual gas in the residual gas bottle, reduces resource waste, and avoids environmental pollution caused by direct discharge of the residual gas into the atmosphere.

[0044] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A device for recovering residual gas in a gas cylinder, characterized in that: The invention comprises a skid-mounted plate (1), wherein the upper surface of the skid-mounted plate (1) is provided with a residual gas bottle support frame (2) for placing a residual gas bottle, a gas-liquid separation component, a buffer component and a gas collecting bottle support frame (3) for placing a gas collecting bottle in sequence; the gas-liquid separation component comprises a gas-liquid separation tank (4) and a vacuum pump (5); a residual gas recovery pipeline (6) is connected to one side of the bottom of the gas-liquid separation tank (4); a first pipeline (7) communicating with an inlet of the vacuum pump (5) is provided at the center of the top of the gas-liquid separation tank (4); the buffer component comprises a buffer tank (8); a buffer pipeline (9) is connected to one side of the bottom of the buffer tank (8); the other end of the buffer pipeline (9) is communicated with an outlet of the vacuum pump (5); a second pipeline (10) is provided at the center of the top of the buffer tank (8); the other end of the second pipeline (10) is connected to a compressor (11); the outlet of the compressor (11) is communicated with a gas transmission pipeline (12).

2. A device for recovering residual gas in a gas cylinder according to claim 1, characterized in that: The residual gas bottle support frame (2) and the gas collection bottle support frame (3) have the same structure, and both comprise a base plate (13), a support rod (14) and a locking assembly, wherein a bottom portion of one side of the support rod (14) is fixedly connected to a side of the base plate (13), a side of the locking assembly is fixedly connected to an upper portion of one side of the support rod (14), and a bottom portion of the support rod (14) is fixedly connected to the skid plate (1).

3. A device for recovering residual gas in a gas cylinder according to claim 2, characterized in that: At least one limiting clip (15) is provided on the upper surface of the bottom plate (13).

4. The device for recovering residual gas in a gas cylinder according to claim 3, characterized in that: The locking assembly comprises a first locking plate (16) and a second locking plate (17), one side of the first locking plate (16) is fixedly connected to the support rod (14), a side of the first locking plate (16) opposite to the second locking plate (17) is provided with a first limiting groove (18) corresponding to the limiting clip (15), a side of the second locking plate (17) is provided with a second limiting groove (19) opposite to the first limiting groove (18), one end of the first locking plate (16) and the second locking plate (17) are movably connected via a rotating shaft (20), and the other end of the first locking plate (16) and the second locking plate (17) are fixedly connected via a locking buckle (21).

5. The device for recovering residual gas in a gas cylinder according to claim 4, characterized in that: The inner walls of the first limiting groove (18) and the second limiting groove (19) are both provided with a buffer pad (22).

6. The device for recovering residual gas in a gas cylinder according to claim 1, characterized in that: A liquid outlet (23) is also provided on one side of the bottom of the gas-liquid separation tank (4).

7. The device for recovering residual gas in a gas cylinder according to claim 6, characterized in that: A plurality of groups of demisters (24) are installed in sequence from bottom to top inside the gas-liquid separation tank (4).

8. The device for recovering residual gas in a gas cylinder according to claim 7, characterized in that: A guide plate (25) is provided on the top of the gas-liquid separation tank (4), the guide plate (25) being in an arc-shaped structure, and the first pipeline (7) is connected to the middle of the guide plate (25) after extending into the gas-liquid separation tank (4).

9. The device for recovering residual gas in a gas cylinder according to claim 8, characterized in that: A drainage plate (26) is provided at the bottom of the gas-liquid separation tank (4).

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