I-shaped diaphragm device

Abstract

The utility model belongs to the technical field of pipeline welding and gas protection in pipeline engineering, and discloses an I-shaped diaphragm device, which comprises a left diaphragm, a right diaphragm, a left diaphragm, a right diaphragm, a left diaphragm and a right diaphragm, the hollow bracket is used for supporting the left and right diaphragms; the hollow bracket air inlet and exhaust pipe is used for charging or discharging air into or out of the hollow bracket between the left diaphragm and the right diaphragm; and the walking pulley is used for moving the device in the pipeline. The W-shaped stripe structures are arranged on the surfaces of the left diaphragm and the right diaphragm, so that the friction force between the diaphragms and the inner wall of the pipeline is greatly enhanced, the device can be in close contact with the inner wall of the pipeline in an inflated state, and the sealing effect is remarkably improved. Inflation and exhaust between the hollow support and the pipe wall can be easily controlled through the air inlet pipe and the air outlet pipe of the hollow support so as to meet the requirements for gas concentration and pressure during welding in a pipeline, the operation process is simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding and gas protection in pipeline engineering, in particular to an I-shaped diaphragm device. Background Art

[0002] With the continuous development of the marine equipment industry, stainless steel pipelines are widely used. Due to the high welding requirements, the existing welding process requires sealing both ends of the pipe before welding, leaving an exhaust pipe. Welding can only be carried out after the pipe is filled with high-purity argon gas and passes testing. During the welding process, the pipe must be continuously inflated to meet the existing welding requirements. After welding is completed, the pressure in the pipe must be maintained to ensure that the weld is stable and does not oxidize. Therefore, the large amount of argon consumption adds significant costs to the company. To reduce carbon emissions and improve energy efficiency for the company, this utility model has been specially designed to meet the current requirements of high-end welding. Utility Model Content

[0003] The main purpose of the utility model is to provide an I-shaped diaphragm device, which aims to solve the technical problem that during the welding process, it is necessary to continuously inflate and replenish the air in the pipeline to meet the existing welding requirements, and after the welding is completed, the pressure in the pipeline must continue to be maintained to ensure that the weld is stable and not oxidized.

[0004] In order to achieve the above-mentioned purpose of the utility model, the first aspect of the utility model provides an I-shaped diaphragm device, comprising: left and right diaphragms, which are used to be fixed inside the pipe and can be sealed by inflation;

[0005] Hollow bracket, used to support the left and right diaphragms;

[0006] The hollow bracket inlet and exhaust pipes are used to fill or exhaust gas into the hollow bracket between the left and right diaphragms;

[0007] Travel pulleys, used to move the device within the pipeline.

[0008] Furthermore, the left and right diaphragm surfaces are provided with a plurality of W-shaped stripe structures for enhancing the sealing between the membrane and the inner wall of the pipe;

[0009] Furthermore, when the left and right diaphragms are inflated, they are used to seal against the inner wall of the pipe;

[0010] Furthermore, the hollow bracket is used to support the left and right diaphragms, the walking pulley and the hollow bracket inlet and exhaust pipes;

[0011] Furthermore, the middle connecting portion of the hollow bracket is made of a flexible material to adapt to the curved path in the pipeline and to withstand pressure;

[0012] Furthermore, it also includes a closed cavity formed between the left and right diaphragms, the hollow bracket and the inner wall of the pipe, and an air pipe for air intake and exhaust is installed on the closed cavity, which is fixedly connected to the inside of the pipe;

[0013] The air intake pipe is responsible for supplying gas to the closed cavity, while the air exhaust pipe is responsible for exhausting the gas from the closed cavity to meet the gas purity and pressure requirements during welding.

[0014] Furthermore, the walking pulleys are installed on both sides of the hollow bracket, and there are three to six walking pulleys on the side of each hollow bracket;

[0015] Furthermore, the walking pulley is used to protect the left and right diaphragms;

[0016] Furthermore, the walking pulley is mounted on the support arm through a rotating shaft, and the support arm is rotatably connected to the hollow bracket, a spring is fixedly mounted on the hollow bracket, and the support arm is fixedly connected to the spring;

[0017] Furthermore, a welding port is provided on the inner wall of the pipeline.

[0018] Beneficial effects:

[0019] The I-shaped diaphragm device of the present invention is deduced based on the content of the first patent to obtain beneficial effects.

[0020] 1. This utility model significantly enhances the friction between the diaphragm and the inner wall of the pipe by providing a W-shaped striped structure on the left and right diaphragm surfaces. This allows the device to form close contact with the inner wall of the pipe when inflated, significantly improving the sealing effect. The hollow bracket inlet and outlet pipes can easily control the inflation and exhaust between the hollow bracket and the pipe wall to meet the gas concentration and pressure requirements during welding in the pipe, simplifying the operation process and improving work efficiency.

[0021] 2. The hollow bracket of this utility model uses a flexible material as the intermediate connection part, which enables the device to adapt to pipes of different curvatures, broadening its application range. The adjustable travel pulley (connected by a spring) ensures that the device can maintain good sealing and stability when facing pipes of different diameters and shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0023] Figure 2 This is a partial schematic diagram of the connection between the walking pulley and the spring in one embodiment of the utility model;

[0024] in:

[0025] 1-left and right diaphragms; 2-hollow bracket; 3-hollow bracket inlet and exhaust pipes; 4-travel pulley; 5-spring; 6-sealed cavity; 7-sealed inlet and exhaust pipes; 8-pipeline.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] Reference Figure 1-Figure 2 One embodiment of the present invention provides an I-shaped diaphragm device, comprising:

[0032] The left and right diaphragms 1 are used to be fixed inside the pipe 8 and can be sealed by inflation;

[0033] A hollow bracket 2, used to support the left and right diaphragms 1;

[0034] The hollow support inlet and outlet pipes 3 are used to fill or discharge gas into or out of the hollow support 2 between the left and right diaphragms 1;

[0035] The traveling pulley 4 is used to move the device in the pipeline 8.

[0036] In this embodiment, the left and right diaphragms 1 are fixed inside the pipe 8 and can achieve close contact with the inner wall of the pipe by inflation, thereby achieving a sealing effect.

[0037] Optionally, the surfaces of the left and right diaphragms 1 are provided with a plurality of W-shaped stripe structures for enhancing the sealing performance with the inner wall of the pipe 8. When the left and right diaphragms 1 are inflated, they are used to seal with the inner wall of the pipe 8.

[0038] In this embodiment, a plurality of W-shaped stripes are provided on the surfaces of the left and right diaphragms 1. These W-shaped stripes help to enhance friction with the inner wall of the pipe 8, thereby improving sealing. When the left and right diaphragms 1 are inflated, they effectively form a close contact with the inner wall of the pipe 8, ensuring a good seal.

[0039] Optionally, the hollow bracket 2 is used to support the left and right diaphragms 1, the walking pulley 4 and the hollow bracket inlet and exhaust pipes 3. The middle connecting part of the hollow bracket 2 is made of flexible material to adapt to the curved path in the pipe 8 and have the function of bearing pressure.

[0040] The flexible material of the middle connecting part of the hollow bracket 2 is one of thermoplastic elastomer, polyurethane and fluororubber.

[0041] In this embodiment, the hollow bracket 2 serves as a support assembly, not only supporting the left and right diaphragms 1 but also carrying the travel pulleys 4 and the hollow bracket inlet and exhaust pipes 3. To accommodate the varying curvatures of the pipe 8, the intermediate connecting portion of the hollow bracket 2 is constructed of a flexible material, allowing the entire assembly to flexibly navigate through curved sections of the pipe.

[0042] The hollow support inlet and outlet pipes 3 are connected to the left and right diaphragms 1, which are used to fill the diaphragms with gas to expand them or exhaust gas to shrink them. In this way, the state of the diaphragms can be controlled as needed to achieve sealing or release of the pipeline.

[0043] Optionally, it further includes a sealed cavity 6 formed between the hollow bracket 2 and the inner wall of the pipe 8, and a sealed air intake and exhaust pipe 7 for air intake and exhaust is installed on the sealed cavity 6.

[0044] In this embodiment, a closed cavity 6 is formed between the left and right diaphragms 1, the hollow bracket 2 and the inner wall of the pipe 8. An air pipe 7 for air intake and exhaust is installed on the closed cavity 6 and is fixedly connected to the inside of the pipe 8.

[0045] The air intake pipe 7A is responsible for supplying gas to the closed cavity 6, while the air exhaust pipe 7B is responsible for exhausting the gas in the closed cavity 6 to meet the gas purity and pressure requirements during welding.

[0046] Optionally, the walking pulleys 4 are installed on both sides of the hollow bracket 2, and there are three to six walking pulleys 4 on the side of each hollow bracket 2. The walking pulleys 4 are used to protect the left and right diaphragms 1.

[0047] In this embodiment, the walking pulleys 4 are installed on both sides of the hollow bracket 2, and three to six walking pulleys 4 are provided on each side. They not only help the device move smoothly in the pipe 8, but also protect the left and right diaphragms 1 to prevent them from being damaged during movement.

[0048] Optionally, the walking pulley 4 is installed on the support arm through a rotating shaft, and the support arm is rotatably connected to the hollow bracket 2. A spring 5 is fixedly installed on the hollow bracket 2, and the support arm is fixedly connected to the spring 5.

[0049] In this embodiment, the travel pulley 4 is mounted on the support arm via a rotating shaft, and the support arm is fixed to the hollow bracket 2 via a rotating connection, which ensures that the pulley can adapt to the different curvatures of the pipe 8. In addition, the support arm is also fixedly connected to a spring 5 to increase the pressure of the pulley on the inner wall of the pipe to ensure the stability of the device.

[0050] Optionally, a welding port is opened on the inner wall of the pipeline 8.

[0051] In this embodiment,

[0052] In summary, the device enters through one end of the pipe 8. At this time, the left and right diaphragms 1 are in an uninflated state and have a small volume, which makes it easy to pass through the entrance of the pipe 8. The walking pulley 4 first contacts the inner wall of the pipe 8 and provides preliminary support to keep the device stable.

[0053] When the device needs to move within pipe 8, the travel pulley 4 utilizes its contact with the pipe's inner wall to roll, pushing the device forward or backward. The travel pulley 4 is mounted on a support arm and connected to the hollow bracket 2 via a rotating shaft. A spring 5 on the support arm ensures that the travel pulley 4 always maintains contact with the pipe's inner wall, maintaining a good fit even when the pipe is curved, reducing friction and protecting the left and right diaphragms 1 from damage.

[0054] After the device reaches the desired position, gas is injected into the left and right diaphragms 1 through the hollow support inlet and outlet pipes 3, causing the diaphragms to expand and come into close contact with the inner wall of the pipe 8. The W-shaped ribbed structure on the surfaces of the left and right diaphragms 1 increases friction with the inner wall of the pipe 8, enhancing the sealing effect. As the left and right diaphragms 1 expand, they form a tight seal with the inner wall of the pipe, preventing fluid or gas leakage.

[0055] When the seal needs to be released or the device needs to be removed from the pipeline, the gas in the left and right diaphragms 1 is discharged through the hollow bracket inlet and exhaust pipes 3 to restore the diaphragms to their original state.

[0056] Likewise, the gas in the sealed cavity 6 can be exhausted by sealing the inlet and outlet pipes 7 .

[0057] After the exhaust is completed, the walking pulley 4 again takes on the task of pushing the device to move along the pipeline 8 until the device completely exits the pipeline 8.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. I-shaped diaphragm device, characterized in that: include: Left and right diaphragms (1) are used to be fixed inside the pipe (8) and can be sealed by inflation; A hollow bracket (2) for supporting the left and right diaphragms (1); The hollow support inlet and outlet pipes (3) are used to fill or discharge gas into or out of the hollow support (2) between the left and right diaphragms (1); Travel pulley (4) for moving the device in the pipeline (8).

2. The I-shaped diaphragm device according to claim 1, characterized in that: The surfaces of the left and right diaphragms (1) are provided with a plurality of W-shaped stripe structures for enhancing the sealing performance with the inner wall of the pipe (8).

3. The I-shaped diaphragm device according to claim 2, characterized in that: When the left and right diaphragms (1) are inflated, they are used to seal against the inner wall of the pipe (8).

4. The I-shaped diaphragm device according to claim 1, characterized in that: The hollow bracket (2) is used to support the left and right diaphragms (1), the walking pulley (4) and the hollow bracket inlet and outlet pipes (3).

5. The I-shaped diaphragm device according to claim 1, characterized in that: The middle connecting portion of the hollow bracket (2) is made of a flexible material and is used to adapt to the curved path in the pipeline (8).

6. The I-shaped diaphragm device according to claim 1, characterized in that: It also includes a sealed cavity (6) formed between the left and right diaphragms (1), the hollow bracket (2) and the inner wall of the pipe (8), and an air pipe (7) for air intake and exhaust is installed in the sealed cavity (6); The air intake pipe (7A) is responsible for supplying gas to the closed cavity (6), while the air exhaust pipe (7B) is responsible for exhausting the gas from the closed cavity (6) to meet the gas purity and pressure requirements during welding.

7. The I-shaped diaphragm device according to claim 1, characterized in that: The walking pulleys (4) are installed on both sides of the hollow bracket (2), and there are three to six walking pulleys (4) on the side of each hollow bracket (2).

8. The I-shaped diaphragm device according to claim 1, characterized in that: The walking pulley (4) is used to protect the left and right diaphragms (1).

9. The I-shaped diaphragm device according to claim 1, characterized in that: The walking pulley (4) is mounted on the support arm via a rotating shaft, and the support arm is rotatably connected to the hollow bracket (2). A spring (5) is fixedly mounted on the hollow bracket (2), and the support arm is fixedly connected to the spring (5).

10. The I-shaped diaphragm device according to claim 1, characterized in that: The inner wall of the pipe (8) is provided with a welding port.

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