Pipeline connecting structure

Abstract

The utility model provides a pipeline connecting structure which is used for connecting a first smoke exhaust pipe and a second smoke exhaust pipe, the pipeline connecting structure comprises a first flange, a second flange matched with the first flange and a transition pipe, one end of the first smoke exhaust pipe is provided with the first flange, one end of the second smoke exhaust pipe is provided with the second flange, and the transition pipe is connected with the first flange. The transition pipe is arranged on the side, away from the first smoke exhaust pipe, of the first flange, and the outer diameter of the transition pipe is consistent with the inner diameter of the second smoke exhaust pipe. According to the utility model, the shaking of the second smoke exhaust pipe in the aligning and assembling process of the first flange and the second flange can be effectively limited, the convenience and accuracy of aligning the first flange and the second flange are improved, and the problem of smoke leakage at the joint of the first flange and the second flange is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust pipe devices, and in particular to a pipe connection structure. Background Technology

[0002] In many fields such as industrial production and emergency power supply, diesel generator sets are key equipment for providing production power. During the operation of diesel generator sets, the sealing of the connection between the exhaust pipe and the external pipeline is crucial, as it affects the operational stability of the diesel generator set.

[0003] Currently, the connection between the exhaust pipe of a diesel generator set and the external pipeline is usually achieved by using a raised face flange butt joint and manual tightening with a V-clamp. Specifically, the operator first aligns the raised face flange on the exhaust pipe with the concave face flange on the external pipeline to make the exhaust pipe fit with the pipe opening of the external pipeline, and then uses a V-clamp to tighten it around the pipe to ensure a secure connection between the exhaust pipe and the external pipeline.

[0004] However, because the flanged end of the external pipeline may wobble during assembly, the above connection method requires a high level of assembly skill from the operator. In actual operation, it is easy for the V-clamp to be tightened before the raised face flange is precisely aligned, resulting in a gap at the connection of the raised face flange. When the diesel generator set is running, if the load of the unit suddenly increases, the power of the diesel engine will rise instantly, and the back pressure of the exhaust will also increase sharply. At this time, the black particles carried in the diesel engine exhaust will be forcefully ejected from the gap at the connection of the raised face flange, which will lead to the problem of pipeline leakage of the diesel generator set, and thus fail to meet the requirements of safe and environmentally friendly operation. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a pipeline connection structure that solves the problem in the prior art where the connection between the exhaust pipe of a diesel generator set and the external pipeline is made by using a raised face flange and manually tightening it with a V-shaped clamp. This method requires high assembly skills from the operators and, in actual operation, it is easy for the raised face flange to be not precisely aligned before tightening the V-shaped clamp, resulting in gaps at the raised face flange connection and causing the diesel generator set to leak smoke during operation.

[0006] The purpose of this utility model is to provide a pipeline connection structure for connecting a first exhaust pipe and a second exhaust pipe. The pipeline connection structure includes a first flange, a second flange adapted to the first flange, and a transition pipe. One end of the first exhaust pipe is provided with the first flange, and one end of the second exhaust pipe is provided with the second flange. The transition pipe is provided on the side of the first flange away from the first exhaust pipe, and the outer diameter of the transition pipe is the same as the inner diameter of the second exhaust pipe.

[0007] Compared with the prior art, the beneficial effects of the pipeline connection structure of this utility model are as follows: by setting a first flange on the first exhaust pipe, setting a second flange on the second exhaust pipe, and adding a transition pipe on the side of the first flange away from the first exhaust pipe, the outer diameter of the transition pipe is consistent with the inner diameter of the second exhaust pipe. In this way, during the assembly of the first flange and the second flange, the transition pipe can enter the interior of the second exhaust pipe, and the circumferential outer wall of the transition pipe fits against the circumferential inner wall of the second exhaust pipe, playing a role in axial positioning. This can effectively limit the shaking of the second exhaust pipe during the alignment and assembly of the first flange and the second flange, improve the convenience and accuracy of aligning the first flange and the second flange, and effectively avoid the problem of smoke leakage at the connection between the first flange and the second flange.

[0008] In addition, the pipeline connection structure described above according to this utility model may also have the following additional technical features:

[0009] Furthermore, the flange face of the first flange is welded to one end of the first exhaust pipe, the sealing face of the first flange is welded to the transition pipe, and the first flange is provided with a first through hole, the diameter of which is the same as the inner diameter of the first exhaust pipe.

[0010] Furthermore, the flange face of the second flange is welded to one end of the second exhaust pipe, the sealing surface of the second flange is adapted to the sealing surface of the first flange, and the second flange is provided with a second through hole, the diameter of the second through hole being consistent with the inner diameter of the second exhaust pipe.

[0011] Furthermore, the center lines of the first exhaust pipe, the first through hole, the transition pipe, the second through hole, and the second exhaust pipe are located on the same horizontal line.

[0012] Furthermore, the first flange is a raised face flange and the second flange is a concave face flange, and the sealing connection between the first exhaust pipe and the second exhaust pipe is achieved through the mating connection of the first flange and the second flange.

[0013] Furthermore, the inner diameter of the transition pipe is larger than the inner diameter of the first exhaust pipe.

[0014] Furthermore, the length of the transition tube is 4cm-6cm. Attached Figure Description

[0015] Figure 1 This is a diagram showing the usage state of the pipeline connection structure of this utility model.

[0016] The above-mentioned drawings include the following reference numerals: 10-first exhaust pipe, 20-second exhaust pipe; 31-first flange; 32-second flange; 40-transition pipe.

[0017] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figure 1 The diagram illustrates a pipe connection structure of this utility model, used to connect a first exhaust pipe 10 and a second exhaust pipe 20. The pipe connection structure includes a first flange 31, a second flange 32 adapted to the first flange 31, and a transition pipe 40. Specifically, one end of the first exhaust pipe 10 is provided with the first flange 31, and one end of the second exhaust pipe 20 is provided with the second flange 32. A transition pipe 40 is provided on the side of the first flange 31 facing away from the first exhaust pipe 10, and the outer diameter of the transition pipe 40 is the same as the inner diameter of the second exhaust pipe 20. The other end of the first exhaust pipe 10 is used to connect to a diesel generator set; that is, the first exhaust pipe 10 is the exhaust pipe of the diesel generator set, and the second exhaust pipe 20 is an external pipe.

[0022] In this embodiment, the flange face of the first flange 31 is welded to one end of the first exhaust pipe 10, and the sealing surface of the first flange 31 is welded to the transition pipe 40. The first flange 31 has a first through hole, the diameter of which is the same as the inner diameter of the first exhaust pipe 10. The flange face of the second flange 32 is welded to one end of the second exhaust pipe 20, and the sealing surface of the second flange 32 is adapted to the sealing surface of the first flange 31. The second flange 32 has a second through hole, the diameter of which is the same as the inner diameter of the second exhaust pipe 20. As a specific example, in this embodiment, the first flange 31 is a convex flange, and the second flange 32 is a concave flange. The sealing connection between the first exhaust pipe 10 and the second exhaust pipe 20 is achieved through the mating connection of the first flange 31 and the second flange 32.

[0023] Furthermore, the center lines of the first exhaust pipe 10, the first through hole, the transition pipe 40, the second through hole, and the second exhaust pipe 20 are located on the same horizontal line.

[0024] Furthermore, the inner diameter of the transition pipe 40 is larger than the inner diameter of the first exhaust pipe 10.

[0025] Furthermore, the transition pipe 40 has a length of 4cm-6cm. This allows the transition pipe 40 to shield the connection point between the first flange 31 and the second flange 32 when they are aligned, thus preventing leakage of flue gas from this connection. As a specific example, in this embodiment, the transition pipe 40 has a length of 5cm.

[0026] In practical application, the working principle of the pipeline connection structure of this utility model is as follows: When it is necessary to connect the first exhaust pipe 10 and the second exhaust pipe 20, the sealing surface of the first flange 31 is placed facing the sealing surface of the second flange 32, and the second exhaust pipe 20 is slowly moved towards the direction of the first flange 31. During this process, the transition pipe 40 will first enter the interior of the second exhaust pipe 20. Since the outer diameter of the transition pipe 40 is the same as the inner diameter of the second exhaust pipe 20, when the transition pipe 40 is fully inserted into the second exhaust pipe 20, the circumferential outer wall of the transition pipe 40 and the inner wall of the second through hole on the second flange 32, as well as the second exhaust pipe 20, are connected. The circumferential inner wall of one end of the second flange 32 on the first exhaust pipe 10 fits against the second flange 20, which can play a role in axial positioning to limit the shaking of the end of the second exhaust pipe 20 during the alignment and assembly of the first flange 31 and the second flange 32. This allows the operator to easily align the sealing surfaces of the first flange 31 and the second flange 32, improving the convenience and accuracy of aligning the first flange 31 and the second flange 32. Finally, a V-shaped clamp can be fitted to lock the connection between the first exhaust pipe 10 and the second exhaust pipe 20, which also effectively avoids the problem of pipe leakage caused by gaps due to misalignment at the connection between the first flange 31 and the second flange 32, and ensures the safe operation of the working equipment.

[0027] In summary, the beneficial effects of the pipeline connection structure of this utility model are as follows: by setting a first flange on the first exhaust pipe, setting a second flange on the second exhaust pipe, and adding a transition pipe on the side of the first flange away from the first exhaust pipe, the outer diameter of the transition pipe is consistent with the inner diameter of the second exhaust pipe. In this way, during the assembly of the first flange and the second flange, the transition pipe can enter the interior of the second exhaust pipe, and the circumferential outer wall of the transition pipe fits against the inner wall of the second through hole on the second flange and the circumferential inner wall of the second exhaust pipe, which can play a role in axial positioning. This can effectively limit the shaking of the second exhaust pipe during the alignment and assembly of the first flange and the second flange, improve the convenience and accuracy of aligning the first flange and the second flange, and effectively avoid the problem of smoke leakage at the connection between the first flange and the second flange.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A pipe connection structure for connecting a first exhaust pipe and a second exhaust pipe, characterized in that, The pipeline connection structure includes a first flange, a second flange adapted to the first flange, and a transition pipe. One end of the first exhaust pipe is provided with the first flange, and one end of the second exhaust pipe is provided with the second flange. The transition pipe is provided on the side of the first flange away from the first exhaust pipe, and the outer diameter of the transition pipe is the same as the inner diameter of the second exhaust pipe.

2. The pipeline connection structure according to claim 1, characterized in that, The flange face of the first flange is welded to one end of the first exhaust pipe, the sealing face of the first flange is welded to the transition pipe, and the first flange is provided with a first through hole, the diameter of which is the same as the inner diameter of the first exhaust pipe.

3. The pipeline connection structure according to claim 2, characterized in that, The flange face of the second flange is welded to one end of the second exhaust pipe, the sealing surface of the second flange is adapted to the sealing surface of the first flange, and the second flange is provided with a second through hole, the diameter of the second through hole being the same as the inner diameter of the second exhaust pipe.

4. The pipeline connection structure according to claim 3, characterized in that, The center lines of the first exhaust pipe, the first through hole, the transition pipe, the second through hole, and the second exhaust pipe are located on the same horizontal line.

5. The pipeline connection structure according to claim 1, characterized in that, The first flange is a raised face flange, and the second flange is a concave face flange. The sealing connection between the first exhaust pipe and the second exhaust pipe is achieved through the mating connection of the first flange and the second flange.

6. The pipeline connection structure according to claim 1, characterized in that, The inner diameter of the transition pipe is larger than the inner diameter of the first exhaust pipe.

7. The pipeline connection structure according to claim 1, characterized in that, The length of the transition tube is 4cm-6cm.

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