CN219317923U

CN219317923U - Tee pipe fitting

Info

Publication number: CN219317923U
Application number: CN202320304067.9U
Authority: CN
Inventors: 何加聪
Original assignee: Wenzhou Guotai Pipe Fittings Manufacturing Co ltd
Current assignee: Wenzhou Guotai Pipe Fittings Manufacturing Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-07-07
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a three-way pipe fitting, which is characterized by comprising a main pipe and branch pipes, wherein a protective sleeve is arranged in the main pipe, two ends of the protective sleeve are communicated with two ends of the main pipe, a through hole is formed in the side wall of the protective sleeve, and the through hole is communicated with the branch pipes; the diameter of the through hole is smaller than that of the branch pipe. The utility model protects the joint of the three-way pipe fitting from the inside, so that the three-way pipe fitting has the advantages of high structural strength, difficult leakage and long service life.

Description

Tee pipe fitting

Technical Field

The utility model relates to the technical field of pipe fittings, in particular to a three-way pipe fitting.

Background

The three-way pipe fitting is widely applied to industries such as building, petroleum, chemical industry, electric power, ships, textile and the like. The tee pipe fitting has multiple types, and wherein, welding tee is widely used in market, adopts the welding mode to connect between the branch pipe of welding tee and the person in charge, and the welding requirement is higher.

After the existing welded three-way pipe fitting is used for a long time, the water leakage problem easily occurs at the welded joint of the main pipe and the branch pipe, namely the intersecting line, and the main reason is that: sharp corners are formed at the intersecting lines inside the pipe, so that large stress concentration is easy to generate, fine cracks are generated at the welded joints under the impact of long-term fluid, and the cracks gradually spread to the outside to cause the pipe to break and fail.

In order to avoid cracking at the junction of the main pipe and the branch pipe, which may lead to pipe breakage, it is necessary to increase the compressive capacity of the intersecting line, i.e. to enhance the compressive properties at this location. Some tee pipe fittings on the market are additionally provided with protective cover plates at the positions outside intersecting lines, the mode is simple and direct, the principle is that the cover plates are sleeved at the positions of the intersecting lines to play a role in auxiliary fixation, but the external structural strength is strengthened through the cover plates, the problem of stress concentration still exists at the positions of the intersecting lines inside the pipe fittings, tiny cracks are easy to generate, after the inside of the pipe fittings is damaged, the pipe wall is thinned, and even if the external cover plates strengthen and fix the pipe wall, the problem of leakage still easily occurs at the thinned positions of the pipe wall. Therefore, it is necessary to improve the structure of the three-way pipe, and protect the junction of intersecting lines of the three-way pipe from the inside.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the three-way pipe fitting, which protects the joint of the three-way pipe fitting from the inside, so that the three-way pipe fitting has the advantages of high structural strength, difficult leakage and long service life.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a tee bend pipe fitting, includes and is responsible for and branch pipe, its characterized in that: the main pipe is internally provided with a protective sleeve, two ends of the protective sleeve are communicated with two ends of the main pipe, the side wall of the protective sleeve is provided with a through hole, and the through hole is communicated with the branch pipe; the diameter of the through hole is smaller than that of the branch pipe.

The utility model is further provided with: the main pipe is internally provided with a limiting convex ring and a limiting ring groove, the limiting convex ring and the limiting ring groove are respectively positioned at two sides of the main pipe, one end of the protective sleeve is propped against the limiting convex ring, and the other end of the protective sleeve is provided with a flexible ring matched with the limiting ring groove.

The utility model is further provided with: the main pipe is internally provided with a positioning convex rib, the protective sleeve is provided with a positioning groove, and the positioning convex rib is matched with the positioning groove in a clamping way.

The utility model is further provided with: the flexible ring is made of rubber materials.

The utility model is further provided with: the branch pipe is provided with a plurality of welding grooves at the joint of the branch pipe and the main pipe, and the notch of each welding groove is flush with the outer surface of the main pipe.

The utility model is further provided with: external threads are arranged on the outer walls of the end parts of the main pipe and the branch pipe.

In summary, the utility model has the following beneficial effects:

compared with the prior art, the protection sleeve is arranged, fluid in the pipe enters the protection sleeve from the main pipe and enters the branch pipe from the through hole of the protection sleeve, and the diameter of the through hole is smaller than that of the branch pipe, so that the fluid can not directly impact the joint of the main pipe and the branch pipe in the flowing and entering process of the fluid into the branch pipe.

Drawings

FIG. 1 is a schematic perspective view of the present embodiment;

FIG. 2 is a schematic cross-sectional view of the internal structure of the present embodiment;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;

fig. 4 is a schematic perspective view of the protective sleeve according to the present embodiment.

Reference numerals: 1. a main pipe; 2. a branch pipe; 3. a protective sleeve; 4. a through hole; 5. a limit convex ring; 6. a limit ring groove; 7. a flexible ring; 8. positioning ribs; 9. a positioning groove; 12. and a welding groove.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a three-way pipe fitting, as shown in figures 1-4, comprising a main pipe 1 and a branch pipe 2, wherein a protective sleeve 3 is arranged in the main pipe 1, two ends of the protective sleeve 3 are communicated with two ends of the main pipe 1, a through hole 4 is formed in the side wall of the protective sleeve, and the through hole 4 is communicated with the branch pipe 2; through the structure that the diameter of the through hole 4 is smaller than that of the branch pipe 2, the fluid in the main pipe 1 enters the branch pipe 2 through the through hole 4 on the protective sleeve 3, and further referring to fig. 2, the broken line part in fig. 2 is the joint of the intersecting line of the main pipe 1 and the branch pipe 2, and is shielded by the protective sleeve 3, so that the fluid does not impact the joint, and the welded joint is not easy to crack and break, thereby effectively preventing the occurrence of leakage problem.

Further, a limiting convex ring 5 and a limiting ring groove 6 are arranged in the main pipe 1, the limiting convex ring 5 and the limiting ring groove 6 are respectively positioned on two sides of the main pipe 1, specifically, the limiting convex ring 5 and the limiting ring groove 6 are respectively arranged on two sides of the branch pipe 2 by taking the branch pipe 2 as the center, one end of the protective sleeve 3 is propped against the limiting convex ring 5, and the other end of the protective sleeve is provided with a flexible ring 7 matched with the limiting ring groove 6. The position of the protective sleeve 3 can be fixed through the limiting convex ring 5, the limiting ring groove 6 and the flexible ring 7, and particularly when the protective sleeve is installed, the protective sleeve 3 is only required to be plugged into the main pipe 1 from one side provided with the limiting ring groove 6, when the end part of the protective sleeve 3 is propped against the limiting convex ring 5, and the flexible ring 7 on the protective sleeve 3 is embedded into the limiting ring groove 6, so that the installation is completed, and the installation is very convenient.

Further, referring to fig. 2 and 4, a positioning rib 8 is disposed in the main pipe 1, a positioning groove 9 is disposed on the protective sleeve 3, the positioning rib 8 is engaged with the positioning groove 9, in the process of installing the protective sleeve 3, in order to ensure the correct communication between the through hole 4 and the branch pipe 2, the circumferential direction of the protective sleeve 3 is also fixed correspondingly, the positioning rib 8 is disposed in the main pipe 1, and the positioning groove 9 is disposed on one side of the protective sleeve 3 correspondingly, and the positioning groove 9 and the positioning rib 8 are engaged with each other to fix the circumferential direction of the protective sleeve 3.

Further, the flexible ring 7 is made of a rubber material, and the rubber material has good sealing performance and elasticity, so that the position of the protective sleeve 3 can be restrained, and good sealing between the protective sleeve 3 and the main pipe 1 can be realized.

Further, referring to fig. 3, the branch pipe 2 is provided with a plurality of welding grooves 12 at the connection with the main pipe 1, the notch of the welding groove 12 is flush with the outer surface of the main pipe 1, under normal conditions, when the intersecting line joint of the main pipe 1 and the branch pipe 2 is in welding, only the outer surface can be welded, and the welding flux can enter the inside of the groove by arranging the welding grooves 12, so that the contact area between the branch pipe 2, the main pipe 1 and the welding flux is increased, the welding flux is more, the welding intensity is strengthened, the joint is strengthened from the outside, and the inner part is strengthened by matching with the protective sleeve 3, so that the embodiment is not easy to leak, and the service life is longer.

Further, external threads are arranged on the outer walls of the ends of the main pipe 1 and the branch pipe 2, and are used for being connected with an external pipeline quickly, so that the tee pipe fitting is convenient to use and install.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a tee bend pipe fitting, includes person in charge (1) and branch pipe (2), its characterized in that: a protective sleeve (3) is arranged in the main pipe (1), two ends of the protective sleeve (3) are communicated with two ends of the main pipe (1), a through hole (4) is formed in the side wall of the protective sleeve, and the through hole (4) is communicated with the branch pipe (2); the diameter of the through hole (4) is smaller than that of the branch pipe (2).

2. A three-way pipe fitting according to claim 1, characterized in that: be provided with spacing bulge loop (5) and spacing annular (6) in being responsible for (1), spacing bulge loop (5) and spacing annular (6) are located the both sides of being responsible for (1) respectively, the one end of protective sleeve (3) supports on spacing bulge loop (5), is provided with on the other end with spacing annular (6) matched with flexible ring (7).

3. A three-way pipe fitting according to claim 1, characterized in that: the main pipe (1) is internally provided with a positioning rib (8), the protective sleeve (3) is provided with a positioning groove (9), and the positioning rib (8) is matched with the positioning groove (9) in a clamping way.

4. A three-way pipe fitting according to claim 2, characterized in that: the flexible ring (7) is made of rubber material.

5. A three-way pipe fitting according to claim 1, characterized in that: the branch pipe (2) is provided with a plurality of welding grooves (12) at the joint with the main pipe (1), and the notch of each welding groove (12) is flush with the outer surface of the main pipe (1).

6. A three-way pipe fitting according to claim 1, characterized in that: external threads are arranged on the outer walls of the ends of the main pipe (1) and the branch pipe (2).