CN214248360U

CN214248360U - Novel ball valve seat assembly structure

Info

Publication number: CN214248360U
Application number: CN202023252117.9U
Authority: CN
Inventors: 韩泽海; 赵平
Original assignee: Cnv Valve & Control Co inc
Current assignee: Cnv Valve & Control Co inc
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-21
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a novel ball valve disk seat subassembly structure, including a metal disk seat and a disk seat insert ring, the one end department level of metal disk seat is equipped with the disk seat of a U-shaped and inlays the circle groove, and the one end department that the circle groove was inlayed to the disk seat is equipped with a plurality of isosceles triangle's bead, disk seat insert ring and bead crimping, the outer wall and the inner wall of disk seat insert ring respectively with disk seat insert ring groove interference fit. This novel ball valve seat subassembly structure has and avoids the cooperation not hard up, improves advantages such as sealing performance and sealing reliability.

Description

Novel ball valve seat assembly structure

Technical Field

The utility model relates to a ball valve disk seat subassembly technical field, especially a novel ball valve disk seat subassembly structure.

Background

The fixed ball valve is a new generation high-performance ball valve, is suitable for long-distance pipeline and general industrial pipeline, and its strength, safety and resistance to harsh environment are specially considered in the design process, so that it is applicable to various corrosive and non-corrosive media. Compared with a floating ball valve, when the ball valve works, acting force generated by fluid pressure in front of the valve on the ball body is completely transmitted to the bearing, the ball body cannot move towards the valve seat, and therefore the valve seat cannot bear overlarge pressure, so that the fixed ball valve is small in torque, small in deformation of the valve seat, stable in sealing performance and long in service life, and is suitable for high-pressure and large-caliber occasions. Advanced spring pre-seating assemblies, with self-tightening features, achieve upstream sealing. Each valve has two valve seats and can seal in each direction, so that the installation has no flow direction limitation and is bidirectional. The valve is generally mounted horizontally.

The ball valve has the characteristics of quick opening and closing, small fluid resistance, simple structure, light weight, convenience in maintenance and the like, and is more and more widely applied to the fields of petrochemical industry and the like. The structure of the conventional ball valve seat assembly is as follows: the valve seat insert ring and the metal valve seat are sealed through inner diameter interference fit, the sealing structure is simple, but the valve is continuously opened and closed in actual use, expansion caused by heat and contraction caused by cold exist, leakage often occurs between the valve seat insert ring and the metal valve seat, and normal production is affected.

Therefore, a novel ball valve seat assembly structure is developed to solve the defects.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is in order to overcome prior art not enough and provide a novel ball valve disk seat subassembly structure, has and avoids the cooperation not hard up, improves advantages such as sealing performance and sealing reliability.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a novel ball valve disk seat subassembly structure, includes a metal disk seat and a disk seat insert ring, the one end department level of metal disk seat is equipped with the disk seat of a U-shaped and inlays the ring groove, the one end department that the ring groove was inlayed to the disk seat is equipped with a plurality of isosceles triangle's bead, the disk seat insert ring with the bead crimping, the outer wall and the inner wall of disk seat insert ring respectively with disk seat insert ring groove interference fit.

Preferably, in order to improve the leakproofness of valve seat insert ring and a metal valve seat lateral wall, the bottom department in valve seat insert ring groove is equipped with a first barb, first barb is close to the bead sets up.

Preferably, in order to improve the sealing performance between the valve seat insert ring and the other side wall of the metal valve seat, a second barb is arranged at the top end of the valve seat insert ring groove, and the second barb is close to the rib.

Preferably, the included angle between the inclined plane of the first barb and the bottom surface of the valve seat insert ring groove is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 20 degrees.

Preferably, the included angle between the inclined plane of the second barb and the top surface of the valve seat insert ring groove is beta, and beta is more than or equal to 15 degrees and less than or equal to 20 degrees.

Preferably, be equipped with a first recess on the inner wall of disk seat ring insert, first recess with first barb joint.

Preferably, the outer wall of the valve seat insert ring is provided with a second groove, and the second groove is clamped with the second barb.

Preferably, in order to improve the sealing property between the valve seat insert ring and the bottom of the metal valve seat, a plurality of V-shaped grooves are formed in one end of the valve seat insert ring, and the V-shaped grooves are in compression joint with the convex ribs.

Preferably, the open end of the valve seat insert ring groove is respectively provided with a chamfer angle and a fillet, one end of the valve seat insert ring is provided with an inclined plane, and the inclined plane is arranged at the middle position of the chamfer angle and the fillet.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the novel ball valve seat assembly structure effectively avoids the loose fit of the valve seat insert ring and the metal valve seat in long-term use, and improves the sealing performance; the first barb, the second barb and the rib triple seal are formed between the valve seat insert ring and the metal valve seat, and the reliability of the seal between the valve seat insert ring and the metal valve seat is greatly enhanced.

Drawings

FIG. 1 is a schematic structural view of a novel ball valve seat assembly structure of the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the accompanying drawings 1 to 2, a novel ball valve seat assembly structure comprises a metal valve seat 2 and a valve seat insert ring 1. The valve seat insert ring 1 and the metal valve seat 2 are in interference fit, barb structures are respectively processed on the inner diameter and the outer diameter of the valve seat insert ring groove 20, and a sealing convex edge 23 is processed at the bottom of the valve seat insert ring groove 20.

One end of the metal valve seat 2 is horizontally provided with a U-shaped valve seat ring embedding groove 20. One end of the valve seat insert ring groove 20 is provided with a plurality of isosceles triangle-shaped convex ribs 23, one end of the valve seat insert ring 1 is in compression joint with the convex ribs 23, and one end of the valve seat insert ring 1 is provided with a plurality of V-shaped grooves 13. The V-shaped groove 13 is in pressure joint with the convex edge 23, so that the sealing performance of the metal valve seat 2 in contact with the bottom of the valve seat insert ring 1 is improved. The outer wall and the inner wall of the valve seat insert ring 1 are in interference fit with the valve seat insert ring groove 20 respectively. A through hole 25 is arranged in parallel on the lower side of the valve seat insert ring groove 20, and the through hole 25 is arranged on the metal valve seat 2.

The bottom of the valve seat insert ring groove 20 is provided with a first barb 21, and the top of the valve seat insert ring groove 20 is provided with a second barb 22. The first barb 21 is disposed adjacent the rib 23 and the second barb 22 is disposed adjacent the rib 23.

The inclined plane of the first barb 21 and the bottom surface of the valve seat insert ring groove 20 form an included angle alpha, and the inclined plane of the second barb 22 and the top surface of the valve seat insert ring groove 20 form an included angle beta. Alpha is more than or equal to 15 degrees and less than or equal to 20 degrees, and the included angle alpha is preferably 20 degrees. Beta is more than or equal to 15 degrees and less than or equal to 20 degrees, and the included angle beta is preferably 20 degrees.

Be equipped with a first recess 11 on the inner wall of disk seat inlay circle 1, be equipped with a second recess 12 on the outer wall of disk seat inlay circle 1, first recess 11 and first barb 21 joint, second recess 12 and second barb 22 joint improve the leakproofness of metal disk seat 2 and the contact of disk seat inlay circle 1 lateral wall.

The open ends of the seat insert pockets 20 are provided with a chamfered corner 26 and a rounded corner 24, respectively. The valve seat insert 1 is provided with an inclined surface 10 at one end, and the inclined surface 10 is arranged at the middle position of the chamfer angle 26 and the fillet 24.

The valve seat insert ring 1 is pressed into a valve seat insert ring groove 20 of the metal valve seat 2 through a tool, the V-shaped groove 13 is in compression joint with the convex rib 23, the first groove 11 is connected with the first barb 21 in a clamped mode, the second groove 12 is connected with the second barb 22 in a clamped mode, triple sealing is achieved, and sealing reliability is improved.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a novel ball valve seating assembly structure which characterized in that: the valve seat insert ring is characterized by comprising a metal valve seat and a valve seat insert ring, wherein a U-shaped valve seat insert ring groove is horizontally formed in one end of the metal valve seat, a plurality of isosceles triangle-shaped convex edges are arranged at one end of the valve seat insert ring groove, the valve seat insert ring is in compression joint with the convex edges, and the outer wall and the inner wall of the valve seat insert ring are in interference fit with the valve seat insert ring groove respectively.

2. A novel ball valve seat assembly structure as claimed in claim 1, wherein a first barb is provided at the bottom end of said seat insert groove, said first barb being disposed adjacent to said rib.

3. A novel ball valve seat assembly structure as claimed in claim 1, wherein a second barb is provided at the top end of the seat insert groove, said second barb being disposed adjacent to said rib.

4. The novel ball valve seat assembly structure of claim 2, wherein the included angle between the inclined surface of the first barb and the bottom surface of the seat insert groove is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 20 degrees.

5. The novel ball valve seat assembly structure of claim 3, wherein the included angle between the inclined surface of the second barb and the top surface of the seat insert groove is beta, and beta is more than or equal to 15 degrees and less than or equal to 20 degrees.

6. The novel ball valve seat assembly structure of claim 2, wherein a first groove is formed on the inner wall of the seat insert, and the first groove is clamped with the first barb.

7. A novel ball valve seat assembly structure as claimed in claim 3, wherein a second groove is formed on the outer wall of the seat insert, and the second groove is clamped with the second barb.

8. A novel ball valve seat assembly structure as claimed in claim 1, wherein said seat insert has a plurality of V-shaped grooves at one end, said V-shaped grooves being in pressure contact with said ribs.

9. A novel ball valve seat assembly structure as claimed in claim 1, wherein the open end of the seat insert groove is respectively provided with a chamfer angle and a fillet angle, and an inclined surface is provided at one end of the seat insert and is disposed at a position intermediate between the chamfer angle and the fillet angle.