CN217422483U

CN217422483U - Spacing telescopic joint of riser

Info

Publication number: CN217422483U
Application number: CN202121764701.4U
Authority: CN
Inventors: 王兴华; 彭海均; 贾立荣
Original assignee: Chengdu Chuanlu Plastic Group Co ltd
Current assignee: Chengdu Chuanlu Plastic Group Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-09-13
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a spacing telescopic joint of riser, it includes: the device comprises a vertical pipe limiting telescopic joint main body, a vertical pipe limiting telescopic joint main body and a vertical pipe limiting telescopic joint main body, wherein the vertical pipe limiting telescopic joint main body is provided with a through installation cavity, an installation boss with the diameter expanding outwards is arranged at the top of the inner wall of the installation cavity, a pre-positioning clamping table is arranged on the inner wall of the installation cavity below the installation boss and used for positioning a drain pipe installed in the installation cavity, and a limiting clamping table is arranged on the inner wall of the installation cavity below the pre-positioning clamping table; the sealing component is arranged on the mounting boss and used for sealing between the drain pipe and the side wall of the mounting boss; and the screw cap is connected on the side wall of the mounting boss by adopting trapezoidal threads and is used for compressing the sealing part. The limit expansion joint of the stand pipe adopts sufficient installation length and a limit structure, the drain pipe is directly inserted to the prepositioning clamping table, the on-site installation is convenient and fast, and the problems of leakage and abnormal sound of the pipeline caused by expansion with heat and contraction with cold are avoided.

Description

Spacing telescopic joint of riser

Technical Field

The utility model relates to a riser drainage system technical field, more specifically the spacing telescopic joint of riser that says so.

Background

In the riser drainage system, because the traditional structure has no limit function, the length of the pipe inserted into the expansion joint is difficult to ensure during installation, and because of expansion caused by heat and contraction caused by cold of the plastic pipeline, the situation that the riser drainage system seeps water at the position of the expansion joint or the pipeline of the whole riser is bent or abnormal sound occurs due to expansion caused by heat and contraction caused by cold during use often occurs; and the water leakage at the sealing end can occur because the length of the expansion joint main body is not enough and the structure of the sealing end is not reasonable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a spacing telescopic joint of riser to the problem in the background art is solved in hope.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a riser limit expansion joint, comprising: the device comprises a vertical pipe limiting telescopic joint main body, a vertical pipe limiting telescopic joint main body and a vertical pipe limiting telescopic joint main body, wherein the vertical pipe limiting telescopic joint main body is provided with a through installation cavity, the top of the inner wall of the installation cavity is provided with an installation boss with an outward-extending pipe diameter, the inner wall of the installation cavity below the installation boss is provided with a pre-positioning clamping table for positioning a drain pipe installed in the installation cavity, and the inner wall of the installation cavity below the pre-positioning clamping table is provided with a limiting clamping table; the sealing component is arranged on the mounting boss and used for sealing between the drain pipe and the side wall of the mounting boss; and the nut is connected to the side wall of the mounting boss by adopting trapezoidal threads and is used for compressing the sealing component.

In some embodiments, the sealing member is a Y-ring, an inner wall of the Y-ring abuts the drain pipe, and an outer wall of the Y-ring abuts an inner wall of the mounting boss.

In some embodiments, the nut is a trapezoidal nut.

In some embodiments, a pressure-containing clamping ring is disposed between the nut and the sealing member.

Drawings

FIG. 1 is a schematic structural view of a riser limit expansion joint according to some embodiments of the present application;

the labels in the figure are: the device comprises a vertical pipe limiting expansion joint body 1, a limiting clamping table 2, a pre-positioning clamping table 3, an installation boss 4, a Y-shaped sealing ring 5, a pressure-bearing pressing ring 6, a trapezoidal nut 7 and a drain pipe 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

On the contrary, this application is intended to cover any alternatives, modifications, equivalents and variations that may be made within the spirit and scope of the present application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.

FIG. 1 is a schematic structural view of a riser limit expansion joint according to some embodiments of the present application; the riser limit expansion joint according to the embodiment of the present application will be described in detail with reference to fig. 1. It is to be noted that the following examples are only for explaining the present application and do not constitute a limitation to the present application.

In an embodiment of the present application, as shown in fig. 1, the riser limit expansion joint may comprise: the vertical pipe limiting expansion joint comprises a vertical pipe limiting expansion joint main body 1, a sealing part and a nut, wherein the vertical pipe limiting expansion joint main body 1 is provided with a through installation cavity, an installation boss 4 with a pipe diameter expanding outwards is arranged at the top of the inner wall of the installation cavity, a pre-positioning clamping table 3 is arranged on the inner wall of the installation cavity below the installation boss 4 and used for positioning a drain pipe 8 installed in the installation cavity, and a limiting clamping table 2 is arranged on the inner wall of the installation cavity below the pre-positioning clamping table 3; the sealing component is arranged on the mounting boss 4 and is used for sealing between the drain pipe 8 and the side wall of the mounting boss 4; the screw cap is connected on the side wall of the mounting boss 4 by adopting trapezoidal threads and is used for compressing the sealing part. In some embodiments, the sealing member is a Y-ring 5, the inner wall of the Y-ring 5 abuts against the drain pipe 8, and the outer wall of the Y-ring 5 abuts against the inner wall of the mounting boss 4. The nut is a trapezoidal nut 7. And a pressure-bearing pressing ring 6 is arranged between the screw cap and the sealing component. The trapezoidal nut 7 is provided with trapezoidal threads, and can transmit larger force to compress the sealing ring, so that the sealing performance is ensured.

The utility model provides a spacing telescopic joint of riser, owing to set up prepositioning the ka tai 3, when using, directly insert drain pipe 8 into the installation cavity, the drain pipe 8 reaches prepositioning the ka tai 3 department and stops promptly, reloads pressure-bearing clamping ring 6, and pressure-bearing clamping ring 6 thickens greatly, improves the bearing capacity, revolves trapezoidal nut 7 and revolves till compressing tightly Y type sealing washer 5; a limiting clamping table 2 is arranged on the inner wall of the mounting cavity below the pre-positioning clamping table 3; namely, the thermal expansion amount of the pipeline is reserved, and the drain pipe 8 is ensured not to contact the limiting clamping table 2 to limit expansion after thermal expansion in the use process; it should be noted here that the expansion of the drain pipe 8 during thermal expansion cannot be limited by the pre-positioning clamping table 3, but the limiting clamping table 2 can limit the expansion of the drain pipe to prevent the pipeline from moving to the bottom of the expansion joint.

The distance between the clamping table 3 and the mounting boss 4 is pre-positioned, so that the pipeline is ensured to be positioned in the sealing range of the expansion joint after being cooled and contracted, and the water leakage phenomenon is avoided. Under the full pipe drainage pressurized condition, Y type sealing washer 5 is compressed, and Y type structure makes the sealing washer inner wall paste the pipeline more closely, and the outer wall pastes tight telescopic joint socket joint inner wall more closely, makes sealed more reliable, can bear bigger pressure and not leak.

The beneficial effects that the riser limit expansion joint disclosed in the application can bring include but are not limited to: the limit expansion joint of the stand pipe adopts sufficient installation length and a limit structure, the drain pipe is directly inserted to the prepositioning clamping table, the convenience and rapidness in field installation are ensured, the problems of leakage and abnormal sound of the pipeline caused by expansion with heat and contraction with cold are avoided, the Y-shaped sealing ring is adopted, the bearing sealing performance of the expansion joint and the pipeline is improved, and the leakage risk is reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a spacing telescopic joint of riser which characterized in that includes:

the device comprises a vertical pipe limiting telescopic joint main body, a vertical pipe limiting telescopic joint main body and a vertical pipe limiting telescopic joint main body, wherein the vertical pipe limiting telescopic joint main body is provided with a through installation cavity, an installation boss with the diameter expanding outwards is arranged at the top of the inner wall of the installation cavity, a pre-positioning clamping table is arranged on the inner wall of the installation cavity below the installation boss and used for positioning a drain pipe installed in the installation cavity, and a limiting clamping table is arranged on the inner wall of the installation cavity below the pre-positioning clamping table;

the sealing component is arranged on the mounting boss and used for sealing between the drain pipe and the side wall of the mounting boss;

and the screw cap is connected on the side wall of the mounting boss by adopting trapezoidal threads and is used for compressing the sealing part.

2. The riser limit expansion joint of claim 1, wherein the sealing member is a Y-shaped sealing ring, an inner wall of the Y-shaped sealing ring abuts against the drain pipe, and an outer wall of the Y-shaped sealing ring abuts against an inner wall of the mounting boss.

3. A riser limit expansion joint as claimed in claim 1 wherein the nut is a trapezoidal nut.

4. A riser limit expansion joint as claimed in any of claims 1 to 3 wherein a pressure-containing clamping ring is provided between the nut and the sealing member.