Vacuumizing treatment device for aluminum alloy gas cylinder

Abstract

The utility model relates to a vacuumizing treatment device for an aluminum alloy gas cylinder, and relates to the technical field of gas cylinder treatment devices. Comprising a balance gas packaging grid P0, the balance gas packaging grid P0 is communicated with a to-be-treated gas cylinder P1 through a main pipeline, and a gas cylinder valve F8, a pipeline valve F7, a vacuum gauge E3, a pipeline valve F2 and a gas cylinder valve F1 are sequentially arranged in the direction from the balance gas packaging grid P0 to the to-be-treated gas cylinder P1; the main pipeline is connected with a first branch and a second branch, the first branch is provided with a vacuum pump valve F3 and a small-power vacuum pump S1, the second branch is sequentially provided with a pipeline valve F5, a controller valve F10, a PLC controller E4, a vacuum pump valve F11 and a high-power vacuum pump S3, the second branch is provided with a vacuum pump storage tank P2, and the vacuum pump storage tank P2 is provided with a gas cylinder valve F9. According to the utility model, the low-power vacuum pump is combined with the vacuum storage tank, so that the technical problems of low vacuum-pumping treatment efficiency, poor vacuum effect and large loss of a vacuum pump set in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cylinder processing devices, and specifically relates to a vacuum pumping processing device for aluminum alloy gas cylinders. Background Technique

[0002] In the process of preparing gas reference materials, it is necessary to correctly equip gas cylinder processing devices, and process gas cylinders, pipelines and valves through methods such as vacuum pumping, heating or nitrogen flushing to establish a reliable gas cylinder processing procedure to reduce or eliminate the interference of gas cylinders in the process of preparing gas reference materials. Vacuum pumping is usually a necessary operation for gas cylinders during the research and development of gas reference materials. Especially when it is necessary to remove oxygen or moisture during the process of preparing gas reference materials, vacuum pumping can effectively achieve this purpose.

[0003] As Figure 1 shown in the gas cylinder processing device of the prior art, the specific operation process of the prior art is as follows:

[0004] (1) Connect the aluminum alloy gas cylinder P1 to the pipeline of the vacuum pumping device, open F2 and F5, and then open the valve F1 of the gas cylinder P1 to vent the residual gas.

[0005] (2) Close F3, F4, and F5, open F6 and F7, fill the gas cylinder with the balance gas P0, and observe the reading of the pressure gauge E1 to 0.5 - 1.0 Mpa;

[0006] (3) Close F6 and F7, open F5, and after observing that the reading of the pressure gauge E2 is consistent with the atmospheric pressure, close F5;

[0007] (4) Open the vacuum pump valves F3 and F4, start the vacuum pump, start vacuum pumping, observe the vacuum gauge E3 until the pressure reading shows less than 8.0E1, close the vacuum pump valves F3 and F4, and turn off the vacuum pump;

[0008] (5) Repeat steps (2) and (3) at least 3 times;

[0009] (6) Open the vacuum pump valves F3 and F4, start the vacuum pump, start vacuum pumping, observe the vacuum gauge E3 until the pressure reading shows less than 2.0E1, and close the gas cylinder valves F1 and F2;

[0010] (7) Close the vacuum pump valves F3 and F4, turn off the vacuum pump, and the vacuum pumping process of the gas cylinder ends.

[0011] In the existing device, a small-power vacuum pump and a molecular pump are used, resulting in a long time-consuming process for evacuating the gas cylinder. When connecting multiple gas cylinders, more time is required for vacuum treatment, and the degree of vacuum is relatively small. It is impossible to provide a time-saving and efficient gas cylinder treatment device, and the consumption of the vacuum pump is large, and the vacuum pump needs to be maintained frequently. Therefore, there is an urgent need for a more energy-efficient gas cylinder treatment device, which has become a technical problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0012] The technical problem solved by the present utility model is to overcome the deficiencies of the prior art and provide a vacuum treatment device for aluminum alloy gas cylinders. By combining a small-power vacuum pump with a vacuum storage tank, the technical problems of low efficiency, poor vacuum effect, and large consumption of the vacuum pump group in the current vacuum treatment of gas cylinders are solved.

[0013] To achieve the above object, the present utility model provides a vacuum treatment device for aluminum alloy gas cylinders, including: a balance gas manifold P0, the balance gas manifold P0 is connected to the gas cylinder to be treated P1 through a main pipeline, and a gas cylinder valve F8, a pipeline valve F7, a vacuum gauge E3, a pipeline valve F2, and a gas cylinder valve F1 are sequentially arranged on the main pipeline along the direction from the balance gas manifold P0 to the gas cylinder to be treated P1; a first branch and a second branch are connected to the main pipeline, a vacuum pump valve F3 and a small-power vacuum pump S1 are arranged on the first branch, and a pipeline valve F5, a controller valve F10, a PLC controller E4, a vacuum pump valve F11, and a high-power vacuum pump S3 are sequentially arranged on the second branch. A vacuum pump storage tank P2 is arranged on the second branch between the pipeline valve F5 and the controller valve F10, and a gas cylinder valve F9 is arranged on the vacuum pump storage tank P2.

[0014] Further, a pressure gauge E1 is arranged on the main pipeline between the pipeline valve F7 and the vacuum gauge E3.

[0015] Further, a vacuum pump valve F4 and a molecular pump S2 are also arranged on the first branch.

[0016] Further, a third branch is connected to the main pipeline between the pressure gauge E1 and the vacuum gauge E3, and a gas vent valve F6 and a pressure gauge E2 are arranged on the third branch.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The utility model solves the technical problems of low efficiency, poor vacuum effect and large loss of vacuum pump in the current vacuum pumping treatment of gas cylinders by combining a small-power vacuum pump with a vacuum storage tank. The vacuum storage tank is equipped with a PLC controller. After setting the PLC controller, when the gas cylinder to be processed reaches a certain vacuum level, the high-power vacuum pump will stop pumping vacuum and restart when the vacuum level is insufficient, greatly reducing the energy consumption and improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 6 is a schematic structural diagram of a gas cylinder processing device of the prior art;

[0020] Figure 2 FIG. 10 is a schematic structural diagram of the device of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances for the embodiments of the present application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the device, element or component indicated to have a specific orientation or to be constructed and operated in a specific orientation.

[0024] Moreover, in addition to being used to represent orientation or positional relationships, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0025] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] As Figure 2 shown, the present utility model provides an aluminum alloy gas cylinder vacuum treatment device, including: a balance gas container grid P0, the balance gas container grid P0 is connected and communicated with a gas cylinder to be treated P1 through a main pipeline, and a gas cylinder valve F8, a pipeline valve F7, a vacuum gauge E3, a pipeline valve F2, and a gas cylinder valve F1 are sequentially arranged on the main pipeline along the direction from the balance gas container grid P0 to the gas cylinder to be treated P1; a first branch and a second branch are connected to the main pipeline, a vacuum pump valve F3 and a low-power vacuum pump S1 are arranged on the first branch, and a pipeline valve F5, a controller valve F10, a PLC controller E4, a vacuum pump valve F11, and a high-power vacuum pump S3 are sequentially arranged on the second branch. A vacuum pump storage tank P2 is arranged on the second branch between the pipeline valve F5 and the controller valve F10, and a gas cylinder valve F9 is arranged on the vacuum pump storage tank P2.

[0027] Further, a pressure gauge E1 (0 - 15 MPa) is arranged on the main pipeline between the pipeline valve F7 and the vacuum gauge E3.

[0028] Further, a vacuum pump valve F4 and a molecular pump S2 are also arranged on the first branch.

[0029] Further, a third branch is connected to the main pipeline between the pressure gauge E1 and the vacuum gauge E3, and a gas vent valve F6 and a pressure gauge E2 (0 - 15 MPa) are arranged on the third branch.

[0030] The utility model is applied to a vacuum pumping device for aluminum alloy gas cylinders in the process of preparing gas standards. By combining a low-power vacuum pump with a vacuum storage tank, the low-power vacuum pump group first evacuates the gas cylinder to a relatively low vacuum level, and then the vacuum storage tank is used to further evacuate it to a satisfactory level. If there are moisture impurities, etc., a small part can be filtered through the vacuum tank, solving the technical problems of low efficiency, poor vacuum effect, and large vacuum pump loss in the current vacuum pumping treatment of gas cylinders. The vacuum storage tank is equipped with a PLC controller. After setting the PLC controller, when the gas cylinder to be processed reaches a certain vacuum level, the high-power vacuum pump will stop pumping, and start again when the vacuum level is insufficient, greatly reducing energy consumption. At the same time, the gas cylinder to be processed and the pipeline can be evacuated in a short time, improving work efficiency.

[0031] The working principle of the utility model is as follows:

[0032] (1) Connect the aluminum alloy gas cylinder P1 to be processed to the pipeline of the vacuum pumping device, open the pipeline valve F2 and the gas vent valve F6, and then open the cylinder valve F1 of the gas cylinder to vent the residual gas.

[0033] (2) Close the vacuum pump valves F3, F4, the gas vent valve F6, the cylinder valve F9, the controller valve F10, and the vacuum pump valve F11. Open the pipeline valves F5, F7, and the cylinder valve F8 of the gas cylinder to fill the balance gas into the balance gas manifold P0, and observe the reading of the pressure gauge E1 to 0.5 - 1.0 Mpa.

[0034] (3) Close the gas vent valve F6 and the pipeline valve F7, open the pipeline valve F5, and after observing that the reading of the pressure gauge E2 is consistent with the atmospheric pressure, close the pipeline valve F5.

[0035] (4) Open the vacuum pump valves F3 and F4, start the low-power vacuum pump S1 to start pumping, observe the vacuum gauge E3 until the pressure reading shows less than 2.0E+02, close the vacuum pump valves F3 and F4, and close the low-power vacuum pump S1 and the molecular pump S2.

[0036] (5) Set the value of the PLC controller E4 to 0.01 pa, open the vacuum storage tank P2, the PLC controller E4, the cylinder valve F9, the controller valve F10, and the vacuum pump valve F11, and continue pumping. When the vacuum level reaches 10 pa, the vacuum pump valve F11 will automatically close to stop pumping.

[0037] (6) Close the cylinder valve F9 and the controller valve F10.

[0038] (7) Repeat steps (2) and (3) at least 3 times.

[0039] (8) Open the vacuum pump valves F3 and F4, turn on the low-power vacuum pump S1 and the molecular pump S2, start evacuating, observe the vacuum gauge E3 until the pressure reading shows less than 2.0E-1, then close the vacuum pump valves F3 and F4, and turn off the low-power vacuum pump S1 and the molecular pump S2.

[0040] (9) Open the vacuum storage tank P2, the PLC controller E4, the gas cylinder valve F9, the controller valve F10, and the vacuum pump valve F11, continue to evacuate. When the vacuum degree reaches 0.01 Pa, the vacuum pump valve F11 automatically closes to stop evacuating.

[0041] (10) Close the gas cylinder valve F1 and the pipeline valve F2, and close the gas cylinder valve F9 and the controller valve F10. The evacuation process of the gas cylinder is completed.

[0042] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A vacuum treatment device for aluminum alloy gas cylinders, characterized in that: include: The balancing gas container P0 is connected with the to-be-processed gas cylinder P1 through a main pipeline, and the main pipeline is provided with a gas cylinder valve F8, a pipeline valve F7, a vacuum gauge E3, a pipeline valve F2, and a gas cylinder valve F1 in sequence along the direction from the balancing gas container P0 to the to-be-processed gas cylinder P1; the main pipeline is connected with a first branch and a second branch, the first branch is provided with a vacuum pump valve F3 and a low-power vacuum pump S1, the second branch is provided with a pipeline valve F5, a controller valve F10, a PLC controller E4, a vacuum pump valve F11, and a high-power vacuum pump S3 in sequence, the second branch between the pipeline valve F5 and the controller valve F10 is provided with a vacuum pump tank P2, and the vacuum pump tank P2 is provided with a gas cylinder valve F9.

2. The vacuum treatment device for an aluminum alloy gas cylinder according to claim 1, characterized in that: A pressure gauge E1 is provided on the main pipe between the pipeline valve F7 and the vacuum gauge E3.

3. The vacuum treatment device for an aluminum alloy gas cylinder according to claim 1, characterized in that: The first branch is also provided with a vacuum pump valve F4 and a molecular pump S2.

4. The vacuum treatment device for an aluminum alloy gas cylinder according to claim 2, characterized in that: A third branch is connected to the main pipe between the pressure gauge E1 and the vacuum gauge E3, and a gas vent valve F6 and a pressure gauge E2 are provided on the third branch.

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