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CN-121977088-A - High-performance hydrogen conveying pipeline valve

CN121977088ACN 121977088 ACN121977088 ACN 121977088ACN-121977088-A

Abstract

The application relates to the technical field of valves, in particular to a high-performance hydrogen transmission pipeline valve which comprises a valve body, a valve rod and a valve core, wherein the valve rod and the valve core are rotatably arranged on the valve body, the valve rod is used for driving the valve core to rotate, a sealing groove is formed in the circumferential side wall of the valve rod, a sealing ring is arranged in the sealing groove and is abutted against the inner wall of the valve body, and sealing filler is arranged between the valve rod and the valve body. The application enlarges the radial dimension of the valve rod to replace the spacer ring, reduces the leakage point of a sealing ring, obviously improves the sealing performance of the valve rod, effectively reduces the leakage risk of hydrogen in the high-pressure conveying process, and is particularly suitable for a hydrogen energy conveying system with extremely high requirement on the sealing performance.

Inventors

  • WANG CHUNCHEN
  • LI FANG
  • REN FEILONG
  • Xiang Jingru

Assignees

  • 五洲阀门股份有限公司

Dates

Publication Date
20260505
Application Date
20260326

Claims (9)

  1. 1. The high-performance hydrogen transmission pipeline valve is characterized by comprising a valve body (1), and a valve rod (2) and a valve core (3) which are rotatably arranged on the valve body (1), wherein the valve rod (2) is used for driving the valve core (3) to rotate, a sealing groove (21) is formed in the circumferential side wall of the valve rod (2), a sealing ring (4) is arranged in the sealing groove (21), the sealing ring (4) is abutted against the inner wall of the valve body (1), and a sealing filler (5) is arranged between the valve rod (2) and the valve body (1).
  2. 2. The high-performance hydrogen transmission pipeline valve according to claim 1, wherein the valve rod (2) comprises a small-diameter section (22) and a large-diameter section (23) which are connected, the small-diameter section (22) is located on one side, far away from the valve core (3), of the large-diameter section (23), the sealing groove (21) is formed in the large-diameter section (23), the high-performance hydrogen transmission pipeline valve further comprises a packing pad (6) located between the small-diameter section (22) and the inner wall of the valve body (1), the packing pad (6) and the packing (5) are distributed along the axial direction of the valve rod (2), and the packing (5) is abutted against the circumferential side wall of the small-diameter section (22) and the inner wall of the valve body (1).
  3. 3. The high-performance hydrogen delivery pipeline valve according to claim 2, further comprising a clamping ring (7) and a positioning ring (8), wherein a clamping groove (11) for inserting the clamping ring (7) is formed in the inner wall of the valve body (1), the positioning ring (8) comprises a small-diameter ring (81) and a large-diameter ring (82) which are connected, the small-diameter ring (81) is located between the small-diameter section (22) and the inner wall of the clamping ring (7), the large-diameter ring (82) is located between the small-diameter section (22) and the inner wall of the valve body (1), the clamping ring (7) is located between the large-diameter ring (82) and the packing pad (6) in the axial direction and is abutted against the axial end faces of the large-diameter ring (82) and the packing pad (6), and a second packing (9) is arranged between the small-diameter ring (81) and the packing pad (6), and the circumferential side wall of the small-diameter section (22) and the inner wall of the clamping ring (7) are abutted against each other.
  4. 4. The high-performance hydrogen delivery pipeline valve according to claim 1, wherein a chute (12) extending around the central axis of the valve body (1) is formed in the circumferential side wall of the valve body (1), a lifting ring (100) is slidably arranged in the chute (12), the lifting ring (100) comprises a lifting part (110) and a mounting part (120), a mounting plate (200) is sleeved on the mounting part (120), two supporting shells (300) are rotatably arranged on the mounting plate (200), the two supporting shells (300) are axially distributed along the valve body (1), a rotating shaft of the supporting shells (300) extends along the radial direction of the valve body (1), the supporting shells (300) are in a lifting state and a supporting state, when the supporting shells (300) are in the lifting state, the two supporting shells (300) are respectively positioned on two sides of the mounting plate (200), the lifting ring (100) are positioned on one side, close to the valve rod (2), and when the supporting shells (300) are in the supporting state, the two supporting shells (300) are in the closing state with the mounting plate (200), and the lifting ring (100) is arranged on one side, far away from the valve rod (2).
  5. 5. The high-performance hydrogen delivery pipeline valve of claim 4, wherein the valve body (1) is detachably connected with a locking rod (400), the locking rod (400) comprises a limiting part (410) and a locking part (420), the width dimension of the locking part (420) is larger than that of the limiting part (410), a strip-shaped groove (13) for inserting the locking part (420) and the limiting part (410) is formed in the circumferential side wall of the valve body (1), a limiting groove (14) for inserting and rotating the locking part (420) is formed in the groove side wall of the strip-shaped groove (13), when the locking part (420) rotates to be staggered with the strip-shaped groove (13), the locking part (420) is abutted against the groove wall of the limiting groove (14), the end part of the limiting part (410) far away from the locking part (420) penetrates out of the strip-shaped groove (13), and when the supporting shell (300) is in a hoisting state, the supporting shell (300) is abutted against the limiting part (410).
  6. 6. The high-performance hydrogen pipeline valve as claimed in claim 5, wherein the two supporting shells (300) are a first supporting shell (310) and a second supporting shell (320) respectively, the locking rod (400) further comprises a collision part (430), the two supporting shells (300) are provided with locking holes (330) in a penetrating mode, the surface, far away from the first supporting shell (310), of the second supporting shell (320) is provided with a limiting block (500), when the supporting shells (300) are in a supporting state, the two locking holes (330) are communicated and used for the limiting part (410) to penetrate through the locking part (420), the collision part (430) is in collision with the surface, far away from the second supporting shell (320), of the first supporting shell (310), and the locking rod (400) rotates to the position, staggered with the locking holes (330), and is in collision with the limiting block (500).
  7. 7. The high-performance hydrogen pipeline valve as claimed in claim 4, wherein the surface of the installation part (120) is provided with a telescopic groove (121), a locking block (600) is arranged in the telescopic groove (121) in a sliding mode, a locking elastic piece (700) enabling the locking block (600) to slide to the end part and penetrate out of the telescopic groove (121) is connected between the locking block (600) and the groove wall of the telescopic groove (121), and the groove side wall of the sliding groove (12) is provided with a locking groove (15) for inserting the end part of the locking block (600).
  8. 8. The high performance hydrogen pipeline valve as claimed in claim 7, wherein an abutting inclined surface (610) is formed on the surface of the end portion of the locking piece (600), the distance between the abutting inclined surface (610) and the central axis of the lifting ring (100) decreases along the direction that the mounting portion (120) is inserted into the sliding groove (12), and the abutting inclined surface (610) is used for sliding abutting with the opening surface of the sliding groove (12).
  9. 9. The high-performance hydrogen delivery pipeline valve as claimed in claim 4, wherein a sliding groove (16) is formed in the groove side wall of the sliding groove (12), a baffle plate (800) is arranged in the sliding groove (16) in a sliding mode, the baffle plate (800) can slide until the end portion of the baffle plate (800) penetrates out of the sliding groove (16) and is inserted into the sliding groove (12), and after the end portion of the baffle plate (800) slides into the sliding groove (12), the baffle plate (800) is abutted against the mounting portion (120).

Description

High-performance hydrogen conveying pipeline valve Technical Field The application relates to the field of valves, in particular to a high-performance hydrogen transmission pipeline valve. Background Valves are devices used in fluid systems to control the direction, pressure, and flow of a fluid. The control of the medium is realized by changing the sectional area or the flow direction of the internal channel. Valves are one of the most basic and important components in a piping system. The hydrogen conveying pipeline valve is used for conveying hydrogen, is applied to a vehicle-mounted hydrogen storage system, a fuel cell power system, and is also used for the scenes such as a hydrogen manufacturing, storage, transportation and conveying system. The sealing structure of the valve is particularly important because hydrogen has high explosiveness and flammability. In the related art, the hydrogen transmission pipeline valve with the ball valve structure comprises a valve body, a valve core, a valve rod and the like, wherein the valve rod drives the valve core to rotate and is arranged in the valve body. The sealing structure of the valve rod position comprises an annular partition ring and a packing pad, wherein the annular partition ring and the packing pad are arranged between the valve rod and the valve neck, an inner O-shaped ring and an outer O-shaped ring are respectively arranged on the inner wall and the outer wall of the partition ring, and an inner packing and an outer packing with triangular cross sections are respectively arranged on the inner wall and the outer wall of the packing pad. The inner O-shaped ring is used as a first seal of the valve rod, the outer O-shaped ring is used as a first seal of the valve neck, the inner filler is used as a second seal of the valve rod, and the outer filler is used as a second seal of the valve neck. The sealing structure has more sealing points for severe hydrogen energy projects, and the risk of easily generating leakage points is increased. Disclosure of Invention In order to reduce the leakage risk, the application provides a high-performance hydrogen transmission pipeline valve. The application provides a high-performance hydrogen transmission pipeline valve, which adopts the following technical scheme: The utility model provides a high performance hydrogen pipeline valve, includes valve body and rotates valve rod and the case of setting on the valve body, the valve rod is used for driving the case and rotates, the seal groove has been seted up on the circumference lateral wall of valve rod, be equipped with the sealing washer in the seal groove, the sealing washer is contradicted with the inner wall laminating of valve body, be equipped with sealing filler between valve rod and the valve body. By adopting the technical scheme, if the sealing structure is arranged on the partition ring, the sealing structures are required to be arranged between the inner wall of the partition ring and the outer wall of the valve rod and between the outer wall of the partition ring and the inner wall of the valve body, so that more leakage points are easy to occur; and the finish degree of the processing surface of the valve rod and the inner wall of the valve body is improved. Optionally, the valve rod includes the minor diameter section and the major diameter section that are connected, the minor diameter section is located the major diameter section and keeps away from one side of case, the seal groove is seted up on the major diameter section, still includes the packing pad that is located between the inner wall of minor diameter section and valve body, packing pad and sealing packing are arranged along the axial of valve rod, sealing packing is contradicted with the laminating of the circumference lateral wall of minor diameter section and the inner wall of valve body. By adopting the technical scheme, the valve rod is divided into the small-diameter section and the large-diameter section, the sealing groove is arranged on the large-diameter section, meanwhile, the packing pad and the sealing packing are arranged between the small-diameter section and the valve body, so that the targeted sealing of different sections of the valve rod is realized, the layering property and the reliability of the sealing are further enhanced, the packing pad and the sealing packing are axially distributed along the valve rod, and compared with the original inner triangular packing and the original outer triangular packing, the packing is designed into annular packing with square sections, the contact surface of the packing, the valve rod and the inner wall of the valve body is enlarged, and the sealing guarantee is improved. Optionally, still include snap ring and holding ring, offer the draw-in groove that supplies the snap ring male on the inner wall of valve body, the holding ring is including the path ring and the big footpath ring that are connected, the path ring is located bet