CN-224229505-U - PCCP (prestressed concrete cylinder pipe) connecting structure

Abstract

The utility model discloses a connecting structure of a PCCP (prestressed concrete cylinder pipe), which comprises a pipe body, wherein two ends of the pipe body are respectively provided with a plug-in part and a socket part, the plug-in parts and the socket parts on the pipe body corresponding to each other from head to tail are plugged and correspond to each other, the outer sides of the plug-in parts are provided with sealing rings, two ends of the pipe body are respectively provided with fixing pieces and pressing pieces corresponding to the fixing pieces, and the number of the pressing pieces is multiple and the pressing pieces are detachably connected with the fixing pieces on the adjacent pipe bodies. The pipe has the beneficial effects that the fixing parts at the two ends of the pipe body are combined with the pressing parts, the two sections of pipelines can be firmly connected by the plurality of pressing parts in a detachable connection mode, and pressure can be gradually applied in later use, so that the tightness and long-term sealing of the pipeline connection are ensured.

Inventors

• HU JINGYUAN
• WEI QICHONG
• ZHONG JINBAO

Assignees

• 广西七星管材有限公司

Dates

Publication Date

20260512

Application Date

20250702

Claims (9)

1. 1. The utility model provides a connection structure of PCCP pipe, includes pipe body (1), pipe body (1) both ends are equipped with grafting portion (101) and socket joint portion (2) respectively, two head and tail correspondences grafting portion (101) on pipe body (1) with socket joint portion (2) are pegged graft and are corresponded, grafting portion (101) outside is equipped with sealing washer (102), its characterized in that: the pipe body (1) both ends be equipped with mounting (4) respectively and with mounting (4) correspond compress tightly piece (3), compress tightly piece (3) quantity have a plurality ofly, and with adjacent on pipe body (1) mounting (4) can dismantle the connection.
2. 2. The connecting structure of PCCP (prestressed concrete cylinder pipe) according to claim 1, wherein the surface of the fixing piece (4) far away from the pipe body (1) is provided with a convex surface part (402), the pressing piece (3) comprises a folding line rod (301) rotatably connected with the pipe body (1), and the movable end part of the folding line rod (301) is provided with a pressing bolt (302) corresponding to the pressing of the convex surface part (402).
3. 3. The connecting structure of PCCP pipe as claimed in claim 2, wherein the fixing member (4) is arc-shaped or ring-shaped, and the fixing member (4) is provided with a forming hole (401) communicated with the pipe body (1).
4. 4. A PCCP pipe connection structure according to claim 3, wherein the convex surface portion (402) is tapered toward the surface of the compression bolt (302), the small end of the tapered surface extends toward the axis of the pipe body (1), and the inner end of the compression bolt (302) is rotatably connected with a wedge block corresponding to the tapered surface of the convex surface portion (402).
5. 5. The PCCP pipe connection structure as in claim 4, wherein the convex surface portion (402) and the molding hole (401) are integrally molded with the fixing member (4).
6. 6. A PCCP pipe connection structure as claimed in claim 2 or 4, wherein the number of the pressing members (3) is not less than three, and the pressing members are circumferentially distributed with respect to the axis of the pipe body (1).
7. 7. The PCCP pipe connecting structure as in claim 6, further comprising a connecting ring (303) provided on the outer wall of the pipe body (1), wherein the connecting ring (303) is provided away from the fixing member (4), the surface of the connecting ring (303) is provided with a through hole communicated with the pipe body (1), and all the folding lines (301) are rotatably connected to the connecting ring (303).
8. 8. The connecting structure of PCCP pipe according to claim 7, wherein the fixing member (4) and the connecting ring (303) are formed on the outer wall of the pipe body (1).
9. 9. The connecting structure of the PCCP pipe as claimed in claim 1, wherein the movable end part of the plugging part (101) is provided with inclined surfaces which are convenient for plugging, and a plurality of sealing rings (102) are uniformly distributed along the axis direction of the plugging part (101).

Description

PCCP (prestressed concrete cylinder pipe) connecting structure Technical Field The utility model relates to the field of pipeline connection, in particular to a connecting structure of a PCCP (prestressed concrete cylinder pipe). Background PCCP is commonly used in the fields of hydraulic engineering, municipal water supply and drainage, industrial water delivery and the like, and the reliability of a connecting structure directly influences the sealing performance, the bearing capacity and the service life of a pipeline system. Wherein the structure is typically composed of steel cylinders, concrete and prestressed reinforcement. In making connections, the connection is typically made by a plug-in arrangement. Traditional PCCP pipeline connection mode is mostly pegged graft or socket connection, can use rubber seal to guarantee the leakproofness of interface usually, prevents the water leakage. However, as the sealing is realized by the single sealing ring, when the pipeline is in water flow conveying, fluctuation is easy to exist, and the sealing ring is easy to deform due to uneven stress, so that water leakage accidents are caused. Disclosure of utility model The object of the present utility model is to provide a PCCP pipe connection structure for solving the above problems, as described in detail below. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a connection structure of PCCP pipe, includes the pipe body, pipe body both ends are equipped with grafting portion and socket joint portion respectively, two head and tail correspondences on the pipe body grafting portion with socket joint portion grafting corresponds, the grafting portion outside is equipped with the sealing washer, pipe body both ends be equipped with the mounting respectively and with the compact piece that the mounting corresponds, compact piece quantity has a plurality ofly, and with adjacent on the pipe body the mounting can dismantle the connection. Further, the fixing piece is far away from the surface of the pipe body and is provided with a convex surface part, the compressing piece comprises a folding line rod rotationally connected with the pipe body, and the movable end part of the folding line rod is provided with a compressing bolt corresponding to compressing of the convex surface part. Further, the fixing piece is arc-shaped or annular, and a forming hole communicated with the pipe body penetrates through the fixing piece. Further, the convex surface portion faces the surface of the compression bolt to form a conical surface, the small end of the conical surface extends towards the axis of the pipe body, and the inner end of the compression bolt is rotationally connected with a wedge block corresponding to the conical surface of the convex surface portion. Further, the convex surface part and the forming hole are integrally formed with the fixing piece. Further, the number of the pressing pieces is not less than three, and the pressing pieces are circumferentially distributed by taking the axis of the pipe body as a reference. Further, still including set up in the go-between of the outer wall of pipe body, the go-between is kept away from the mounting sets up, the go-between surface be equipped with the through-hole of pipe body intercommunication, all the broken line pole is all rotated and is connected on the go-between. Further, the fixing piece and the connecting ring are both formed and arranged on the outer wall of the pipe body. Furthermore, the movable end part of the plug-in part is provided with inclined planes which are convenient for plugging, and the number of the sealing rings is multiple and is uniformly distributed along the axis direction of the plug-in part The beneficial effects are that: The fixing pieces at two ends of the pipe body are combined with the pressing pieces, the plurality of pressing pieces can enable the two sections of pipelines to be firmly connected in a detachable connection mode, and pressure can be gradually applied in later use, so that the tightness and long-term sealing of the pipeline connection are ensured; The structure has high-efficiency sealing performance and maintainability, can adapt to different environments and pressure conditions, is convenient to detach and maintain, and ensures the long-term stability and reliability of a pipeline system. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a cross-sectional view of the internal structure of the prese