CN-224229486-U - Anti-seepage structure of spheroidal graphite cast iron sewage pipeline for high water level area

Abstract

The utility model relates to the field of drainage engineering and discloses a spheroidal graphite cast iron sewage pipeline seepage-proofing structure for a high water level area, which comprises a spheroidal graphite cast iron pipeline body, wherein a spigot pipe is fixedly arranged at the right end of the spheroidal graphite cast iron pipeline body, a circular reinforcing ring is fixedly arranged on the inner wall surface of the spigot pipe, a circular groove is formed in one side of the circular reinforcing ring, a rubber sealing ring is fixedly arranged in the circular groove, and a circular connecting convex ring corresponding to the circular groove is fixedly arranged at the left end of the spheroidal graphite cast iron pipeline body.

Inventors

• LI JIE
• REN JUN
• WU PENG
• LI BIN
• LIU PENGFEI
• LONG LING
• CHEN ZHENGTAO
• HE JING

Assignees

• 中国水利水电第十工程局有限公司

Dates

Publication Date

20260512

Application Date

20250514

Claims (8)

1. 1. A ductile iron sewage pipeline seepage-proofing structure for a high water level area comprises a ductile iron pipeline body (1) and is characterized in that a socket pipe (2) is fixedly arranged at the right end of the ductile iron pipeline body (1), a circular reinforcing ring (3) is fixedly arranged on the inner wall surface of the socket pipe (2), a circular groove (4) is formed in one side of the circular reinforcing ring (3), a rubber sealing ring (5) is fixedly arranged in the circular groove (4), a circular connecting convex ring (6) corresponding to the circular groove (4) is fixedly arranged at the left end of the ductile iron pipeline body (1), the circular connecting convex ring (6) is spliced in the circular groove (4), and a socket sealing mechanism (7) connected with the circular reinforcing ring (3) is arranged at the left end of the ductile iron pipeline body (1).
2. 2. The spheroidal graphite cast iron sewage pipeline seepage prevention structure for the high water level area according to claim 1, wherein the socket sealing mechanism (7) comprises a circular groove (701) and a sealing rubber ring (702), two circular grooves (701) are formed in the inner wall surface of the circular reinforcing ring (3), two sealing rubber rings (702) matched with the circular grooves (701) are fixedly arranged at the left end of the spheroidal graphite cast iron pipeline body (1), and the sealing rubber rings (702) are clamped in the circular grooves (701).
3. 3. The anti-seepage structure of the spheroidal graphite cast iron sewage pipeline for the high water level area according to claim 1, wherein a first flange connection disc (8) is fixedly arranged on the outer surface of one end of the spigot joint pipe (2) far away from the spheroidal graphite cast iron pipeline body (1), a second flange connection disc (9) corresponding to the first flange connection disc (8) is fixedly arranged on the outer surface of the spheroidal graphite cast iron pipeline body (1) near the left end, and the first flange connection disc (8) and the second flange connection disc (9) are fixed through bolts.
4. 4. The ductile iron sewage pipeline seepage-proofing structure for a high water level area according to claim 1, wherein a sealing gasket (10) is fixedly arranged on one side of the second flange connection disc (9), and the sealing gasket (10) is positioned between the second flange connection disc (9) and the circular connection convex ring (6).
5. 5. The ductile iron sewage pipeline seepage-proofing structure for a high water level area according to claim 1, wherein a supporting ring (11) is fixedly arranged on the outer surface of the ductile iron pipeline body (1), a supporting plate (12) is fixedly arranged on the outer surface of the supporting ring (11), and a U-shaped support (13) is fixedly arranged on the bottom surface of the supporting plate (12) through a set bolt.
6. 6. The ductile iron sewer pipe seepage-proofing structure for high water level area according to claim 1, wherein the round connecting convex ring (6) is rounded at one end close to the round reinforcing ring (3).
7. 7. The anti-seepage structure of the spheroidal graphite cast iron sewage pipeline for the high water level area according to claim 1, wherein the outside of the spheroidal graphite cast iron pipeline body (1) is smaller than the inner diameter of the circular reinforcing ring (3).
8. 8. A spheroidal graphite cast iron sewage pipe seepage-proofing structure for high water level areas according to claim 1, wherein the circular connecting convex ring (6) can be integrally formed with the spheroidal graphite cast iron pipe body (1).

Description

Anti-seepage structure of spheroidal graphite cast iron sewage pipeline for high water level area Technical Field The application belongs to the technical field of drainage engineering, and particularly relates to an anti-seepage structure of a spheroidal graphite cast iron sewage pipeline for a high water level area. Background The spheroidal graphite cast iron sewage pipeline is a sewage conveying facility adopting spheroidal graphite cast iron, is widely applied to drainage engineering due to high strength, good toughness and excellent corrosion resistance, and a high water level region refers to a region where the groundwater level is close to or even higher than the ground, soil in the region is in a saturated water-containing state for a long time, high water pressure exists, the seepage prevention requirement on the pipeline is extremely high, the common seepage prevention treatment of the spheroidal graphite cast iron sewage pipeline is as follows, sealing is realized by extrusion of a rubber ring at a joint part in the process of socket joint, the flange joint is filled with gaps through a flange gasket and a fastening bolt, the rubber sealing ring is extruded by the clamp joint by means of tightening the clamp, meanwhile, sealing glue is smeared at the joint part to fill micro gaps, and an anti-corrosion coating is coated on the surface of a pipeline body, so that the whole seepage prevention capability is further enhanced, the sewage conveying safety and reliability are ensured, and leakage is avoided. The spheroidal graphite cast iron sewage pipeline adopts socket joint to connect and relies on the sealing washer to realize sealed prevention of seepage generally, but in high water level district, along with the increase of during the use, high water pressure repeatedly extrudes can accelerate sealing washer material fatigue, causes it to produce crackle and even damage, is showing and shortens life in addition, and the factor such as high water level district soil subsidence causes the inhomogeneous displacement of pipeline, also surpasses traditional sealing washer's deformation adaptability far, leads to its sealing performance to decline, is difficult to effectively block sewage seepage and groundwater to flow backward, provides a spheroidal graphite cast iron sewage pipeline prevention of seepage structure for this high water level district. Disclosure of utility model The application aims to solve the problems, and provides an anti-seepage structure of a ductile iron sewage pipeline for a high water level area. The anti-seepage structure for the spheroidal graphite cast iron sewage pipeline in the high water level area comprises a spheroidal graphite cast iron pipeline body, wherein a spigot and socket pipe is fixedly arranged at the right end of the spheroidal graphite cast iron pipeline body, a circular reinforcing ring is fixedly arranged on the inner wall surface of the spigot and socket pipe, a circular groove is formed in one side of the circular reinforcing ring, a rubber sealing ring is fixedly arranged in the circular groove, a circular connecting convex ring corresponding to the circular groove is fixedly arranged at the left end of the spheroidal graphite cast iron pipeline body, the circular connecting convex ring is spliced in the circular groove, and a spigot and socket sealing mechanism connected with the circular reinforcing ring is arranged at the left end of the spheroidal graphite cast iron pipeline body. In a preferred embodiment, the socket sealing mechanism comprises a circular groove and a sealing rubber ring, two circular grooves are formed in the inner wall surface of the circular reinforcing ring, two sealing rubber rings matched with the circular grooves are fixedly arranged at the left end of the nodular cast iron pipeline body, and the sealing rubber rings are clamped in the circular grooves. In a preferred embodiment, a first flange connection disc is fixedly arranged on the outer surface of one end, far away from the spheroidal graphite cast iron pipeline body, of the spigot pipe, a second flange connection disc corresponding to the first flange connection disc is fixedly arranged on the outer surface, close to the left end, of the spheroidal graphite cast iron pipeline body, and the first flange connection disc is fixed with the second flange connection disc through bolts. In a preferred embodiment, a sealing gasket is fixedly arranged on one side of the second flange connection disc, and the sealing gasket is positioned between the second flange connection disc and the circular connection convex ring. In a preferred embodiment, the outer surface of the ductile cast iron pipeline body is fixedly provided with a supporting ring, the outer surface of the supporting ring is fixedly provided with a supporting plate, and the bottom surface of the supporting plate is fixedly provided with a U-shaped support through a set bolt. In a preferred embodiment, the end of