A non-cutoff pipe arrangement
By using a reducing pipe design without a flow-blocking device, the problem of rapid changes in fluid flow in a tee pipe is solved, achieving smooth guidance and uniform mixing of the fluid, thus improving the efficiency and stability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI PANDA MACHINEGRP CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-07-21
AI Technical Summary
The existing T-junction design, with its branch pipe and main pipe angle, causes a sudden change in the direction of fluid flow, resulting in mechanical energy loss, eddies, and vibrations. Furthermore, the fluid mixing is uneven, which can easily lead to cavitation.
A non-intercepting pipeline device is adopted, which connects the main pipe and branch pipes through reducing pipes. The design features large rounded corners and gentle angles to reduce fluid impact and achieve smooth fluid guidance and mixing.
It significantly reduces turbulence and energy loss, lowers the local flow resistance coefficient, improves system efficiency and stability, avoids eddies and cavitation, and ensures uniform fluid mixing.
Smart Images
Figure CN224533801U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fluid transport pipeline technology, and in particular relates to a pipeline device without flow interception. Background Technology
[0002] Tees are an indispensable basic component in piping systems, and their core function is to branch and merge flows. They are like "intersections" or "merging points" in a road system, which can bring together fluids from two different branch pipes into a single main pipe.
[0003] The existing technology still has the following technical problems: the branch pipe and the main pipe of the tee pipe must form an angle, usually 90° perpendicular or 45° acute angle. These two types of tee pipes have simple structures and are the most widely used, but the fluid flow direction changes abruptly at the corner, and the flow velocity and pressure distribution change drastically, leading to significant mechanical energy loss. Separated flows and strong eddies are easily generated behind the corner and in the confluence area. These eddies not only consume energy but also cause pipe vibration and noise. For operating conditions requiring confluence, the two fluids may not mix sufficiently and uniformly. Under specific pressures and flow velocities, cavitation is more likely to occur at sharp corners, damaging the pipe wall. Utility Model Content
[0004] The purpose of this invention is to provide a non-intercepting pipeline device to solve the technical problems mentioned in the background art, guide fluid more smoothly, and reduce resistance, scouring, vibration and water flow collision loss.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a non-intercepting pipeline device is provided, including a main pipe and a branch pipe. The main pipe is a straight pipe with a first inlet at one end. The end of the branch pipe away from the main pipe is a second inlet. A reducing pipe is welded to the outside of the straight pipe. The reducing pipe consists of a reducing section and a straight section. The outer diameter of one end of the reducing section gradually increases from the end near the first inlet toward the straight section. The end of the straight section is the outlet. The end of the reducing section near the first inlet has the same diameter as the first inlet, and the other end has the same diameter as the outlet. The branch pipe is connected to the reducing pipe from the side of the straight section, and the outlet of the branch pipe faces the wall of the straight pipe.
[0006] Preferably, the first inlet is welded with a first inlet flange, the second inlet is welded with a second inlet flange, and the outlet is welded with an outlet flange.
[0007] Preferably, the connecting section between the branch pipe and the straight section of the reducing pipe has a large-sized rounded corner.
[0008] Preferably, the angle between the branch pipe and the reducing pipe is 10° to 90°.
[0009] Preferably, the length of the straight pipe is shorter than or equal to the length of the reducing pipe.
[0010] Preferably, the straight pipe is tangent to the reducing pipe, and the branch pipe is connected to the reducing pipe from the point furthest from the straight pipe.
[0011] The beneficial effects are as follows: This utility model separates the main and branch water flows of the tee pipe by using a reducing pipe, ensuring that when water enters from both inlets at the same time, the two water flows will not directly impact or collide, thereby significantly reducing turbulence, vortices and energy loss. The large radius angle can guide the water flow at the second inlet to change direction very smoothly, allowing it to smoothly merge into the main water flow and achieve laminar flow transition. At the same time, it effectively reduces the local flow resistance coefficient and system pressure loss, and reduces the possibility of cavitation caused by vortices and pressure changes, thereby improving the overall efficiency and stability of the system. Attached Figure Description
[0012] Figure 1 This is a cross-sectional view of an embodiment of a non-intercepting pipeline device;
[0013] Figure 2 This is a perspective view of an embodiment of a non-intercepting pipeline device;
[0014] Figure 3 This is a cross-sectional view of a second embodiment of a non-intercepting pipeline device;
[0015] Figure 4 This is a perspective view of a second embodiment of a non-intercepting pipeline device.
[0016] Wherein, 101-first inlet; 102-second inlet; 103-outlet; 201-rounded corner; 1-first inlet flange; 2-reducing section; 3-straight section; 4-branch pipe; 5-second inlet flange; 6-outlet flange; 7-straight pipe.
[0017] The same markings in each diagram represent the same component. Detailed Implementation
[0018] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0019] This utility model provides a non-intercepting pipeline device, including a main pipe and a branch pipe 4. The main pipe is a straight pipe 7, one end of which is a first inlet 101. The end of the branch pipe 4 away from the main pipe is a second inlet 102. A reducing pipe is welded to the outside of the straight pipe 7. The reducing pipe consists of a reducing section 2 and a straight section 3. The outer diameter of one end of the reducing section 2 gradually increases from the end near the first inlet 101 toward the straight section 3. The end of the straight section 3 is an outlet 103. The end of the reducing section 2 near the first inlet 101 has the same diameter as the first inlet 101, and the other end has the same diameter as the outlet 103. The branch pipe 4 is connected to the reducing pipe from the side of the straight section 3, and the outlet of the branch pipe 4 faces the wall of the straight pipe 7.
[0020] The angle between the branch pipe 4 and the reducing pipe is 10° to 90°.
[0021] Example 1 Figure 1 , 2 As shown, a non-intercepting pipeline device is provided in which the branch pipe 4 and the straight pipe 7 are arranged perpendicularly.
[0022] During production, the smallest end of the reducing section 2 of the reducing pipe is fixed to the first inlet 101 of the straight pipe 7 by circumferential welding. The straight pipe 7 is tangent to the reducing pipe, and the length of the straight pipe 7 is shorter than the length of the reducing pipe. The reducing section 2 of the reducing pipe is welded to the straight section 3. After the welding of the reducing pipe and the straight pipe 7 is completed, the first inlet 101 of the straight pipe 7 is welded to the first inlet flange 1 to ensure alignment accuracy. One end of the branch pipe 4 is connected to the reducing pipe from the farthest point from the straight pipe 7, and the outlet of the branch pipe 4 is directly opposite the pipe wall of the straight pipe 7. The connection between the two pipes is made into a large radius fillet 201 by stretching. Finally, the second inlet flange 5 is welded at the second inlet 102 of the branch pipe 4, and the outlet flange 6 is welded at the end of the straight section 3 of the reducing pipe.
[0023] The first inlet flange 1 and the second inlet flange 5 are used to connect to the upstream pipeline, and the outlet flange 6 is used to connect to the downstream pipeline.
[0024] Example 2 Figure 3 , 4 As shown, a flow-blocking pipeline device is provided in which the axes of branch pipe 4 and straight pipe 7 are at a 45° angle. The outlet direction of branch pipe 4 faces the wall of straight pipe 7, and the rest of the structure is exactly the same as in Embodiment 1. This inclined layout can make the change of fluid flow direction more gradual, further optimizing the fluid dynamics performance, and is suitable for working conditions with more stringent requirements for pressure loss.
Claims
1. A non-cutoff pipeline device, comprising a main pipe and a branch pipe, the main pipe being a straight pipe with a first water inlet at one end, the branch pipe having a second water inlet at an end away from the main pipe, characterized in that, The straight pipe is welded with a reducing pipe, which consists of a reducing section and a straight section. The outer diameter of one end of the reducing section gradually increases from the end near the first inlet towards the straight section. The end of the straight section is the outlet. The end of the reducing section near the first inlet has the same diameter as the first inlet, and the other end has the same diameter as the outlet. The branch pipe is connected to the reducing pipe from the side of the straight section, and the outlet of the branch pipe faces the wall of the straight pipe.
2. The non-intercepting pipeline device according to claim 1, characterized in that, The first inlet is welded with a first inlet flange, the second inlet is welded with a second inlet flange, and the outlet is welded with an outlet flange.
3. The non-intercepting pipeline device according to claim 1, characterized in that, The connecting section between the branch pipe and the straight section of the reducing pipe has a large-sized rounded corner.
4. The non-intercepting pipeline device according to claim 1, characterized in that, The angle between the branch pipe and the reducing pipe is 10° to 90°.
5. A non-intercepting pipeline device according to claim 1, characterized in that, The length of the straight pipe is shorter than or equal to the length of the reducing pipe.
6. The non-intercepting pipeline device according to claim 1, characterized in that, The straight pipe is tangent to the reducing pipe, and the branch pipe is connected to the reducing pipe from the point furthest from the straight pipe.