CN-224214750-U - Sealing structure of marine high-pressure flange ball valve

CN224214750UCN 224214750 UCN224214750 UCN 224214750UCN-224214750-U

Abstract

The utility model relates to the technical field of high-pressure flange ball valves, and particularly discloses a sealing structure of a marine high-pressure flange ball valve, which comprises a valve body, an O-shaped ball valve and valve seats arranged on the left side and the right side of the O-shaped ball valve, wherein bipolar sealing mechanisms are arranged at the left end and the right end of the O-shaped ball valve, each bipolar sealing mechanism comprises two symmetrically distributed valve seat grooves arranged in the valve body, the two valve seats are respectively positioned in the two valve seat grooves, supporting rings are fixedly connected in the two valve seat grooves, a plurality of butterfly springs distributed in annular arrays are fixedly connected between the two supporting rings and the two valve seats respectively, and each bipolar sealing mechanism is abutted with the inner wall of the valve seat groove through a first sealing ring on the outer wall of the valve seat, and a second sealing ring on the inner wall of the valve seat groove is attached to the outer wall of the O-shaped ball valve, so that two independent and complementary sealing lines are formed. The design of double-channel sealing can effectively prevent sudden leakage and meet the high safety requirement of a ship system.

Inventors

ZHAO GENHUA
TIAN JINJUN
LU FAN

Assignees

江苏兴亚船用阀门有限公司

Dates

Publication Date: 20260508
Application Date: 20250721

Claims (5)

1. The sealing structure of the marine high-pressure flange ball valve comprises a valve body (1), an O-shaped ball valve (2) and valve seats (3) arranged at the left side and the right side of the O-shaped ball valve (2), and is characterized in that bipolar sealing mechanisms are arranged at the left end and the right end of the O-shaped ball valve (2); The bipolar sealing mechanism comprises two symmetrically distributed valve seat grooves (10) arranged inside a valve body (1), two valve seats (3) are respectively located inside the two valve seat grooves (10), two supporting rings (4) are fixedly connected to the inside of the valve seat grooves (10), a plurality of annular array distributed belleville springs (5) are fixedly connected between the supporting rings (4) and the two valve seats (3) respectively, two first sealing rings (6) are fixedly connected to the outer walls of the valve seats (3) and are in butt joint with the inner walls of the valve seat grooves (10), and second sealing rings (7) are fixedly connected to the inner walls of the valve seats (3) and are in butt joint with the inner walls of O-shaped ball valves (2).
2. The sealing structure of the marine high-pressure flange ball valve is characterized in that two limiting rods (9) which are distributed up and down are fixedly connected to opposite surfaces of two valve seats (3), two auxiliary rings (8) are fixedly connected to the inner wall of the valve body (1), and two limiting grooves (11) which are in sliding connection with the limiting rods (9) are formed in the outer walls of the two auxiliary rings (8) in a penetrating mode.
3. The sealing structure of the marine high-pressure flange ball valve according to claim 1, wherein the first sealing ring (6) is made of fluororubber material, and the section of the first sealing ring (6) is in a trapezoid structure.
4. The sealing structure of the marine high-pressure flange ball valve according to claim 1, wherein the second sealing ring (7) is made of polytetrafluoroethylene.
5. The sealing structure of the marine high-pressure flange ball valve is characterized in that the inner walls of the two auxiliary rings (8) are abutted with the outer wall of the O-shaped ball valve (2).

Description

Sealing structure of marine high-pressure flange ball valve Technical Field The utility model relates to the technical field of high-pressure flange ball valves, and particularly discloses a sealing structure of a marine high-pressure flange ball valve. Background In the ship industry, the high-pressure flange ball valve for the ship is used as a key fluid control component, is widely applied to the fields of ship fuel oil transportation, ballast water systems, hydraulic power systems and the like, and the sealing performance of the high-pressure flange ball valve directly influences the running safety and reliability of a ship system. With the increasing complexity of ship navigation environment and the increasing demands of ship equipment on high-pressure and high-corrosiveness medium treatment, higher requirements are put on the sealing structure of the high-pressure flange ball valve for the ship. The existing sealing structure of the marine high-pressure flange ball valve mostly adopts a single-stage sealing design, when the sealing component is impacted by high-pressure fluid, deformation and abrasion are easy to occur, so that sealing failure is caused, medium leakage is further caused, resource waste is caused, and safety accidents are also possibly caused, and therefore the sealing structure of the marine high-pressure flange ball valve is needed to solve the problem. Disclosure of utility model The utility model provides a sealing structure of a marine high-pressure flange ball valve, which can effectively prevent sudden leakage through the design of double-way sealing, meets the high safety requirement of a ship system, and ensures that the elastic deformation characteristic of a belleville spring can automatically adjust the abutting force of a valve seat according to the system pressure, the pre-tightening force of the spring ensures the constant pressure of a sealing surface, and sealing failure caused by factors such as vibration is avoided. The utility model discloses a sealing structure of a marine high-pressure flange ball valve, which comprises a valve body, an O-shaped ball valve and valve seats arranged at the left side and the right side of the O-shaped ball valve, wherein bipolar sealing mechanisms are arranged at the left end and the right end of the O-shaped ball valve; The bipolar sealing mechanism comprises two symmetrically distributed valve seat grooves arranged inside the valve body, the two valve seats are respectively located inside the two valve seat grooves, the two valve seat grooves are respectively fixedly connected with a supporting ring, a plurality of annular array distributed belleville springs are fixedly connected between the supporting rings and the two valve seats respectively, the two valve seats are respectively fixedly connected with first sealing rings which are in butt joint with the inner walls of the valve seat grooves, and the inner walls of the valve seats are fixedly connected with second sealing rings which are in butt joint with the inner walls of the O-shaped ball valves. As the sealing structure of the marine high-pressure flange ball valve, two limiting rods which are distributed up and down are preferably fixedly connected to the opposite surfaces of two valve seats, two auxiliary rings are fixedly connected to the inner wall of the valve body, and two limiting grooves which are in sliding connection with the limiting rods are formed in the outer walls of the two auxiliary rings in a penetrating mode. As the sealing structure of the marine high-pressure flange ball valve, the sealing structure is preferable, the first sealing ring is made of fluororubber material, and the section of the first sealing ring is of a trapezoid structure. As the sealing structure of the marine high-pressure flange ball valve, the second sealing ring is preferably made of polytetrafluoroethylene. As the sealing structure of the marine high-pressure flange ball valve, the sealing structure is preferable, and the inner walls of the two auxiliary rings are abutted with the outer wall of the O-shaped ball valve. The beneficial effects of the utility model are as follows: (1) The bipolar sealing mechanism is abutted with the inner wall of the valve seat groove through the first sealing ring on the outer wall of the valve seat, and the second sealing ring on the inner wall is attached to the outer wall of the O-shaped ball valve, so that two independent and complementary sealing defense lines are formed. The design of double-channel sealing can effectively prevent sudden leakage and meet the high safety requirement of a ship system. (2) The elastic deformation characteristic of the belleville spring enables the belleville spring to automatically adjust the propping force of the valve seat according to the system pressure, the pre-tightening force of the spring ensures the constant pressure of the sealing surface, and sealing failure caused by factors such as vibration is avoi