Pipeline connecting structure suitable for interior of high-temperature device

Abstract

The pipeline connecting structure comprises a tank body, a bridging pipe and a cylinder body, the bridging pipe is a connecting piece between the tank body and the cylinder body, and the two ends of the bridging pipe are located in the tank body and the cylinder body; the spherical surface mounting inlet of the cylinder body is in interference fit with the spherical surface mounting inlet of the bridging pipe, the cylinder body and the bridging pipe are in spherical surface contact, and the two spherical surfaces are in clearance fit and can rotate in all directions; the bridging pipe and the tank body are in a structure form that a spherical surface is in clearance fit with a straight hole; wherein the bridging pipe is provided with a spherical surface, and the tank body is provided with a straight hole. The cylinder body and the bridging pipe are in spherical contact and clearance fit, and the spherical surface can rotate in all directions; the bridging pipe and the tank body are in clearance fit through a spherical surface and a straight hole, and radial and axial movement can be achieved. When thermal expansion occurs between the cylinder body and the tank body, the bridging pipe can adapt to the change, and the cylinder body and the tank body are prevented from generating extra stress and deformation at high temperature.

Description

Technical Field

[0001] The invention relates to a pipeline connection structure, in particular to a pipeline connection structure suitable for high-temperature devices and capable of preventing a cylinder and a tank from generating additional stress and deformation at high temperatures. Background Art

[0002] At present, in common high-temperature devices, the cylinder outlet and the tank outlet are generally connected by welded pipes. The cylinder and the tank expand thermally at high temperatures, and the expansion may cause inconsistent deformation, thereby generating stress that affects the deformation of the cylinder and the tank.

[0003] Figure 1 This is a schematic diagram of using welded pipes to connect pipelines in existing high-temperature devices, such as Figure 1 As shown, when the cylinder and the tank body expand thermally, the welded pipe 2' cannot adapt to the change, and cannot avoid the cylinder 3' and the tank body 1' from generating additional stress and deformation at high temperature. Summary of the invention

[0004] In view of the above problems, the main purpose of the present invention is to provide a pipeline connection structure suitable for high-temperature devices, which can avoid the cylinder and the tank from generating additional stress and deformation at high temperatures.

[0005] The present invention solves the above technical problems through the following scheme: a pipeline connection structure suitable for high-temperature devices, the pipeline connection structure suitable for high-temperature devices comprising: a tank body, a bridge pipe, and a cylinder body, the bridge pipe is a connecting piece between the tank body and the cylinder body, and both ends of the bridge pipe are located in the tank body and the cylinder body.

[0006] An appropriate interference fit is adopted between the spherical installation entrance of the cylinder and the spherical installation entrance of the bridge tube to prevent the bridge tube from falling off. There is spherical contact between the cylinder and the bridge tube, and the two spherical surfaces are clearance-fitted, and the two spherical surfaces can realize rotation in all directions.

[0007] The bridge tube and the tank body are in a structural form of a spherical surface and a straight hole clearance fit; wherein, the bridge tube is provided with a spherical surface, and the tank body is provided with a straight hole.

[0008] In a specific implementation example of the present invention, the bridging tube is installed into the cylinder by cold installation.

[0009] In a specific implementation example of the present invention, a step is provided at the contact portion between the tank body and the bridge tube, and the spherical surface where the bridge tube contacts the tank body is located within the step.

[0010] In a specific implementation example of the present invention, a gap is provided between the surface where one end of the bridging pipe contacts the tank body and the contact surface of the bottom of the step.

[0011] In a specific implementation example of the present invention, the bridge pipe includes: a first spherical surface installed at one end of the cylinder, a second spherical surface installed at one end of the tank, and a connecting middle section connecting the first spherical surface and the second spherical surface.

[0012] In a specific implementation example of the present invention, the thickness at the second spherical surface is greater than the thickness at the first spherical surface.

[0013] In a specific implementation example of the present invention, the bridging tube is integrally formed.

[0014] The positive and progressive effect of the present invention is that compared with the common similar technologies, the pipe connection structure suitable for high-temperature devices provided by the present invention has spherical contact between the cylinder and the bridge pipe, which is a clearance fit, and the spherical surface can achieve all-directional rotation; the bridge pipe and the tank body have a spherical surface and a straight hole clearance fit, which can achieve radial and axial movement. When the cylinder and the tank body expand thermally, the bridge pipe can adapt to the change, avoiding additional stress and deformation of the cylinder and the tank body at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of using welded pipes to connect pipelines in existing high-temperature devices.

[0016] Figure 2 This is a schematic diagram of the pipeline connection structure in the high-temperature device provided by the present invention.

[0017] Figure 3 for Figure 2 A partial enlarged view of .

[0018] The following are the names corresponding to the labels in the present invention:

[0019] Tank body 1, bridge tube 2, cylinder body 3, gap 4, entrance 5;

[0020] Step 101 , straight hole 102 , first spherical surface 201 , second spherical surface 203 , connecting middle section 202 . DETAILED DESCRIPTION

[0021] Preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solutions of the present invention in detail.

[0022] Figure 2 This is a schematic diagram of the pipeline connection structure in the high-temperature device provided by the present invention. Figure 3 for Figure 2 A partial enlarged view of Figure 2 and 3 As shown: The present invention proposes a pipeline connection structure suitable for high-temperature devices, the connection structure includes: a tank body 1, a bridge pipe 2, and a cylinder 3, the bridge pipe 2 is a connecting piece between the tank body 1 and the cylinder 3, and both ends of the bridge pipe 2 are located in the tank body 1 and the cylinder 3.

[0023] The spherical installation entrance 5 of the cylinder 3 and the spherical installation entrance of the bridge tube 2 are appropriately interlocked to prevent the bridge tube from falling off. The cylinder 3 and the bridge tube 2 are in spherical contact, and the two spherical surfaces are clearance-matched, and the two spherical surfaces can realize all-directional rotation; the bridge tube 2 and the tank body 1 are in the form of a spherical surface and a straight hole clearance-matched structure. Among them, the bridge tube 2 is provided with a spherical surface (see Figure 3 , at the first spherical surface 201, at the second spherical surface 203), a straight hole 102 is set on the tank body 1.

[0024] A step 101 is provided at the contact portion between the tank body 1 and the bridge tube 2. The spherical surface where the bridge tube 2 contacts the tank body 1 is located within the step 101. A gap 4 is provided between the contact surface between the end of the bridge tube 2 contacting the tank body 1 and the bottom of the step.

[0025] The bridging tube 2 is installed at the first spherical surface 201 at one end of the cylinder 3, at the second spherical surface 203 at one end of the tank body 1, and at a connecting middle section 202 connecting the first spherical surface 201 and the second spherical surface 203. The bridging tube 2 is integrally formed, and the thickness of the second spherical surface 203 is greater than the thickness of the first spherical surface 201.

[0026] In the present invention, the cylinder 3 and the bridge tube 2 are in spherical contact, the two spherical surfaces are clearance-matched, and the spherical surfaces can realize all-directional rotation.

[0027] A suitable interference fit is adopted between the spherical installation entrance 5 of the cylinder 3 and the spherical installation entrance of the bridge tube 2, and the bridge tube 2 needs to be installed in a cold installation manner.

[0028] The bridge tube 2 and the tank body 1 are matched with a spherical surface and a straight hole clearance, which can realize radial and axial movement.

[0029] When the cylinder 3 and the tank body 1 expand thermally, the bridging tube 2 can adapt to the change, thereby preventing the cylinder 3 and the tank body 1 from generating additional stress and deformation at high temperatures.

[0030] The novel pipeline connection structure in the high-temperature device adopted by the present invention can operate stably, safely and reliably in a high-temperature environment.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A pipe connection structure suitable for high temperature devices, characterized in that: The pipeline connection structure suitable for high temperature devices comprises: a tank body, a bridge pipe, and a cylinder body, wherein the bridge pipe is a connecting piece between the tank body and the cylinder body, and both ends of the bridge pipe are located inside the tank body and the cylinder body; A suitable interference fit is adopted between the spherical installation entrance of the cylinder and the spherical installation entrance of the bridge tube. The cylinder and the bridge tube are in spherical contact, the two spherical surfaces are clearance fit, and the two spherical surfaces can realize rotation in all directions. The bridge tube and the tank body are in a structural form of a spherical surface and a straight hole clearance fit; wherein, the bridge tube is provided with a spherical surface, and the tank body is provided with a straight hole.

2. The pipe connection structure suitable for high temperature devices according to claim 1, characterized in that: The bridge tube is installed into the cylinder by cold installation.

3. The pipe connection structure suitable for high temperature devices according to claim 1, characterized in that: A step is arranged at the position where the tank body contacts the bridge pipe, and the spherical surface where the bridge pipe contacts the tank body is located inside the step.

4. The pipe connection structure suitable for high temperature devices according to claim 1, characterized in that: A gap is arranged between the surface where one end of the bridge pipe contacts the tank body and the bottom of the step contacts.

5. The pipe connection structure suitable for high temperature devices according to claim 1, characterized in that: The bridge pipe comprises: a first spherical surface installed at one end of the cylinder, a second spherical surface installed at one end of the tank, and a connecting middle section connecting the first spherical surface and the second spherical surface.

6. The pipe connection structure suitable for high temperature devices according to claim 5, characterized in that: The thickness at the second spherical surface is greater than the thickness at the first spherical surface.

7. The pipeline connection structure suitable for high temperature devices according to claim 5 or 6, characterized in that: The bridge tube is integrally formed.

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