CN-121993694-A - High-performance pipe cleaning valve

CN121993694ACN 121993694 ACN121993694 ACN 121993694ACN-121993694-A

Abstract

The invention discloses a high-performance pipe cleaning valve, which relates to the technical field of pipe cleaning valves and comprises a valve body, a sealing valve seat assembly and a ball body, wherein a medium flow passage extending horizontally and a pipe cleaner passage extending vertically are arranged in the valve body, the medium flow passage is communicated with the pipe cleaner passage in an orthogonal mode and forms a valve cavity at the intersection, the sealing valve seat assembly comprises an upper valve seat ring assembly and a lower valve seat ring assembly which are installed in the valve cavity in a sealing mode, the axes of the upper valve seat ring assembly and the lower valve seat ring assembly are perpendicular to the axis of the medium flow passage, arc-shaped sealing surfaces with the same spherical center are arranged on opposite sides of the upper valve seat ring assembly and the lower valve seat ring assembly, and the ball body is rotatably arranged between the arc-shaped sealing surfaces of the upper valve seat ring assembly and the lower valve seat ring assembly. Through multiple structural innovations and optimization, the invention realizes technical breakthroughs of no-stop pipeline cleaning, full-working-condition sealing reliability, safe and convenient operation, economical and efficient maintenance, and is particularly suitable for high-pressure and continuous operation pipeline systems requiring frequent pipeline cleaning.

Inventors

JIANG LEI
XIAO JUN
TIAN YINGJU
LI FUQIANG
JIANG JIANWEI
HU YAN
LIU CHAO
Qing Shiwei
YANG WEI
JIN SUNYI
MA DAWEI

Assignees

浙江上工阀门有限公司

Dates

Publication Date: 20260508
Application Date: 20260323

Claims (10)

1. A high performance purge valve, comprising: The valve body is internally provided with a medium flow passage extending horizontally and a pipe cleaner passage extending vertically, and the medium flow passage is communicated with the pipe cleaner passage in an orthogonal manner and forms a valve cavity at the intersection; The sealing valve seat assembly comprises an upper valve seat ring assembly and a lower valve seat ring assembly which are hermetically installed in the valve cavity, the axes of the upper valve seat ring assembly and the lower valve seat ring assembly are perpendicular to the axis of the medium flow passage, and arc-shaped sealing surfaces with the same sphere center are arranged on the opposite sides of the upper valve seat ring assembly and the lower valve seat ring assembly; the ball body is rotatably arranged between the arc-shaped sealing surfaces of the upper valve seat ring assembly and the lower valve seat ring assembly, the ball body is provided with a ball body channel which is axially communicated, and one end of the ball body channel is detachably provided with a blind plate; a valve stem drive assembly coupled to and driving rotation of the ball, such that the ball passageway is selectively coaxially aligned with the media flow passage or the pig passageway; the upper-mounted top cover is connected to the top of the valve body and seals the upper port of the pipe cleaner channel, and the upper-mounted top cover is provided with a pressure release valve.
2. The high-performance pipe cleaning valve according to claim 1, wherein the medium flow passage sequentially comprises an inlet section, a valve cavity section and an outlet section along the medium flow direction, the valve cavity section is a middle cavity of the medium flow passage, the valve cavity is arranged in the center of the interior of the valve cavity section and is used for accommodating the ball body and the sealing valve seat assembly, the axis of the inlet section and the axis of the outlet section are collinear and are intersected with the spherical center of the ball body, the outer diameter of the ball body is smaller than the inner diameter of the valve cavity section, so that when the ball body rotates in the valve cavity section, a circumferential annular bypass flow passage is formed between the outer surface of the ball body and the inner wall of the valve cavity section, and when the ball body channel and the pipe cleaner channel are coaxial, the medium can realize bypass flow between the inlet section and the outlet section through the bypass flow passage.
3. The high performance pipe cleaning valve according to claim 1, wherein an upper mounting groove is coaxially arranged on the inner side of the bottom of the pipe cleaner channel, a lower mounting groove is coaxially arranged on the wall surface of the medium flow channel right below the upper mounting groove, the upper valve seat ring assembly is sealed and fixedly arranged in the upper mounting groove, the lower valve seat ring assembly is sealed and axially slidably assembled in the lower mounting groove, and a plurality of lower compensation springs are uniformly distributed between the bottom of the lower mounting groove and the bottom surface of the lower valve seat ring assembly along the circumferential direction.
4. The high-performance pipe cleaning valve according to claim 1, wherein a bypass pressure regulating flow passage is arranged on the valve body, an inlet of the bypass pressure regulating flow passage is communicated with the medium flow passage, an outlet of the bypass pressure regulating flow passage is communicated with the pipe cleaner passage, and an on-off adjustable regulating valve is arranged in the bypass pressure regulating flow passage.
5. The high-performance pipe cleaning valve according to claim 1, wherein the bottom surface of the lower valve seat ring assembly, the ball body and the bottom of the lower mounting groove jointly enclose a pressure cavity; The bottom of the lower valve seat ring assembly is uniformly distributed with a plurality of convex ribs along the circumferential direction, the bottom surfaces of the convex ribs are contacted with the bottom of the lower mounting groove, and the bottom surfaces of the lower valve seat ring assemblies between adjacent convex ribs form a first pressure bearing surface; A communication hole is formed in the lower valve seat ring assembly between the adjacent convex ribs, one end of the communication hole is communicated with the pressure cavity, and the other end of the communication hole is communicated with one side of the top of the lower valve seat ring assembly; When the medium pressure enters the pressure cavity through the communication hole, the first pressure bearing surface receives upward medium acting force, the second pressure bearing surface receives downward medium acting force, and the pressure difference generated by the fact that the area of the first pressure bearing surface is larger than that of the second pressure bearing surface forms upward net thrust to enhance the sealing specific pressure between the arc-shaped sealing surface of the lower valve seat ring assembly and the ball body.
6. The high performance spool valve of claim 1, wherein a clearance fit is employed between the end of the valve stem drive assembly and the drive bore on the ball to enable the ball to float in the axial direction of the pig passage; When the pressure release valve is used for releasing pressure of the pipe cleaner channel to normal pressure, the medium pressure in the medium flow channel pushes the ball to move upwards along the axial direction of the pipe cleaner channel, so that the top surface of the ball is tightly pressed against the arc-shaped sealing surface of the upper valve seat ring assembly, and the sealing specific pressure between the upper valve seat ring assembly and the ball is enhanced.
7. The high-performance grease-injecting valve according to claim 3, wherein the valve body is provided with a first grease-injecting channel communicated with the upper mounting groove, an inlet end of the first grease-injecting channel penetrates through an inner side wall of the upper mounting groove, and an outlet end of the first grease-injecting channel is led to the outside of the valve body; The valve body is also provided with a second grease injection channel communicated with the lower mounting groove, the inlet end of the second grease injection channel penetrates through the inner side wall of the lower mounting groove, and the outlet end of the second grease injection channel is led to the outside of the valve body; And the outlet end of the first grease injection channel and the outlet end of the second grease injection channel are both provided with double check valves.
8. The high-performance grease cleaning valve according to claim 7, wherein the outer peripheral surface of the upper valve seat ring assembly is provided with a first annular grease storage groove corresponding to the inlet end of the first grease injection channel, a plurality of first L-shaped flow guide holes are uniformly distributed in the circumferential direction of the upper valve seat ring assembly, the inlet of the first L-shaped flow guide hole is communicated with the first annular grease storage groove, and the outlet of the first L-shaped flow guide hole is communicated with the medium flow channel; the outer peripheral surface of the lower valve seat ring assembly is provided with a second annular grease storage groove corresponding to the inlet end of the second grease injection channel, a plurality of second L-shaped guide holes are uniformly distributed in the circumferential direction of the lower valve seat ring assembly, the inlet of each second L-shaped guide hole is communicated with the corresponding second annular grease storage groove, and the outlet of each second L-shaped guide hole is communicated with the corresponding medium flow channel.
9. The high performance spool valve of claim 1, wherein the valve body comprises a valve body and a removable top-mounted valve neck, the medium flow passage is provided in the valve body, the pig passage is formed in the top-mounted valve neck, and the top-mounted valve neck is sealingly and fixedly mounted in a mounting port at the top of the valve body.
10. The high-performance pipe cleaning valve according to claim 1, wherein the lower valve seat ring assembly comprises a lower valve seat ring body and a lower sealing ring clamped on the lower valve seat ring body, the upper valve seat ring assembly comprises an upper valve seat ring body and an upper sealing ring clamped on the upper valve seat ring body, and arc-shaped sealing surfaces which are concentric with the sphere are formed on the inner circumferences of the upper sealing ring and the lower sealing ring.

Description

High-performance pipe cleaning valve Technical Field The invention relates to the technical field of pipe cleaning valves, in particular to a high-performance pipe cleaning valve. Background In long distance pipeline conveying system of industries such as oil gas, chemical industry, the main function of the pipe cleaning valve is to realize loading, throwing in and retrieving of pipe cleaner as the core equipment of guaranteeing safe and efficient operation of pipeline, scrapes the pollutant such as impurity, scale deposit, wax condensation etc. of sweeping the pipeline inner wall through the pipe cleaner, avoids pipeline to block up and corrode aggravation, and then ensures medium conveying efficiency and pipeline life. However, the conventional pipe cleaning valve still faces a plurality of technical bottlenecks in practical application, and is difficult to meet the high-frequency pipe cleaning operation requirement under severe working conditions. The traditional pipe cleaning valve adopts bilateral symmetry disk seat overall arrangement more, and disk seat and bearing structure can occupy spheroid side horizontal space, can't form the bypass runner that encircles the spheroid, when leading to switching to pigging operating mode, the solid part of spheroid can block the main medium runner completely, must pause pipeline transportation and just can carry out pigging operation, causes production interruption, brings apparent economic loss for the pipeline system that continuous operation requires high. In terms of sealing performance, the traditional valve seat lacks a reliable initial pretightening force adjusting mechanism under a low-pressure working condition, leakage is easily caused by insufficient specific sealing pressure, a sealing surface is easily worn due to relative rotation of a ball body and the valve seat under a high-pressure working condition, sealing force cannot be dynamically compensated after the ball body and the valve seat are worn, a sealing gap can be accumulated and increased along with running time, leakage risk is obviously increased, meanwhile, a shaft end sealing position is easily a weak leakage point due to the fact that the traditional ball body is provided with a plurality of rear supporting shafts, and the sealing safety level is further reduced. In addition, when working conditions are switched, the medium flow channel and the pipe cleaner channel have obvious pressure difference, so that the problems of large rotation resistance of a ball, easy blocking, impact abrasion of a sealing surface and the like are caused, and the operation of a part of valves can be completed only by being provided with a speed reducing mechanism, thereby increasing the structural complexity and the operation difficulty. Disclosure of Invention The present invention is directed to a high performance purge valve to solve the above-mentioned problems. In order to achieve the aim of the invention, the invention adopts the following technical scheme: the invention provides a high-performance pipe cleaning valve, which comprises: The valve body is internally provided with a medium flow passage extending horizontally and a pipe cleaner passage extending vertically, and the medium flow passage is communicated with the pipe cleaner passage in an orthogonal manner and forms a valve cavity at the intersection; The sealing valve seat assembly comprises an upper valve seat ring assembly and a lower valve seat ring assembly which are hermetically installed in the valve cavity, the axes of the upper valve seat ring assembly and the lower valve seat ring assembly are perpendicular to the axis of the medium flow passage, and arc-shaped sealing surfaces with the same sphere center are arranged on the opposite sides of the upper valve seat ring assembly and the lower valve seat ring assembly; the ball body is rotatably arranged between the arc-shaped sealing surfaces of the upper valve seat ring assembly and the lower valve seat ring assembly, the ball body is provided with a ball body channel which is axially communicated, and one end of the ball body channel is detachably provided with a blind plate; a valve stem drive assembly coupled to and driving rotation of the ball, such that the ball passageway is selectively coaxially aligned with the media flow passage or the pig passageway; the upper-mounted top cover is connected to the top of the valve body and seals the upper port of the pipe cleaner channel, and the upper-mounted top cover is provided with a pressure release valve. The medium flow passage sequentially comprises an inlet section, a valve cavity section and an outlet section along the medium flow direction, wherein the valve cavity section is a middle cavity of the medium flow passage, the valve cavity is arranged in the center of the inside of the valve cavity section and is used for accommodating the ball body and the sealing valve seat assembly, the axis of the inlet section and the axis of th