Unlock instant, AI-driven research and patent intelligence for your innovation.

Flexible pipe joint

By using a synthetic resin sleeve at the pipe joint to cover the recessed part of the inner surface of the pipe, the problems of sludge accumulation and flow loss are solved, and stable connection performance is provided under the action of external forces, and the shear force and bending force are controlled. Effective absorption.

Inactive Publication Date: 2007-09-05
WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO LTD
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, because any kind of situation all can not completely bury the recessed part that forms at the partial spherical outer surface 2a of 1 side, 1d and the partial spherical inner surface 3a of the 2nd tubular body 3 relative sliding range, so can not To fully prevent the accumulation of sludge and reduce the effect of flow loss

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0064] Figures 1 to 7 show a telescopic flexible pipe joint provided in a piping system of a sewer pipe as an example of a fluid pipe. On both ends of the first pipe body 1 made of cast iron formed in a straight tube as a socket pipe, the outer surface 2a is made of cast iron which is made of cast iron which is formed into a partial spherical shape by fitting the outer surface 2a as a whole so as to be relatively freely slidable in the X direction of the pipe axis. Spherical ring 2. In addition, on each spherical ring 2, a second pipe body 3 made of cast iron, which is a socket pipe, is fitted and connected to the outer surface of the spherical ring 2 to be relatively free to slide (freely bend) along the partial spherical outer surface 2a of the spherical ring 2. A partial spherical inner surface 3a at one end.

[0065] At each of the ends of the outer surface of the first tube body 1 in the X direction of the tube axis, the length of the tube axis in the X direction is greater t...

no. 2 Embodiment approach

[0079] Figures 8 and 9 show an improved form of the telescopic flexible pipe joint described in the first embodiment. The sleeve 15 is provided with a fixing mechanism A that prevents relative movement in the tube axis X direction with respect to the second tube body 3 on one side. It is also provided with a plurality of temporary fixing protrusions 15c in the circumferential direction that engage with the annular recess 1b formed on the inner surface 1a of the other first tube body 1 to prevent relative movement of the two 15, 3 in the X direction of the tube axis. . Thus, the temporary fixing protrusion 15c is configured to release the temporary fixing by shear due to an external force in the X direction of the tube axis core due to an earthquake or the like.

[0080] The base end side of the sleeve 15 is fixed to the second pipe body 3 on one side by the fixing mechanism A. In addition, the insertion end side of the sleeve 15 is connected to the first pipe body 1 formed on the ...

no. 3 Embodiment approach

[0084] FIG. 10 shows another embodiment of the fixing mechanism A described in the first embodiment. The outer surface of the sleeve 15 is on the circumference of the engagement groove 1c formed on the inner surface 1a of the first pipe body 1 A plurality of locking protrusions 15d are formed in the entire direction. Thus, it is configured to prevent relative movement of the sleeve 15 and the first tube body 1 in the tube axis X direction.

[0085] In this embodiment, contrary to the first embodiment, the sleeve 15 and the second tube body 3 are configured to be relatively free to slide in the tube axis X direction.

[0086] In addition, since the other configuration is the same as the configuration described in the first embodiment, the same components are denoted by the same symbols as in the first embodiment, and their descriptions are omitted.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A flexible pipe joint joins, in a bendable manner, a first pipe member (1) provided with a partially spherical outer circumferential surface (2a) that protrudes outward in radial direction and a second pipe member (3) provided with a partially spherical inner surface (3a) that can slide along the partially spherical outer circumferential surface (2a). A sleeve (15) made of a synthetic resin is inserted and fitted in a state of contact, bridging the inner circumferential surfaces of the two pipe members. The sleeve has a length that covers a cavity portion that opens inward in radial direction at a location where the two pipe members are joined together, and is elastically deformed substantially maintaining its circular tube shape when following a flexure of the two pipe members. The flexible pipe joint effectively suppresses impediments to the flow volume such as the deposition of sludge and grime while ensuring the intended bendability due to relative sliding of a partially spherical outer circumferential surface (2a) of a first pipe member (1) and a partially spherical inner circumferential surface (3a) of a second pipe member (3).

Description

Technical field [0001] The present invention relates to an external force such as a shear force and a bending moment such as an earthquake and different sinking directions such as an earthquake and different sinking directions in a piping system, which is embedded in a hydraulic trail or the like which is embedded. The tube adapter absorbs the external force to suppress the damaged flexible pipe joint of the fragile portion of the pipe system. In detail, it is related to the first tube body having a portion of the outer surface of a spherical shape that protrudes toward the radially outer surface, and is freely curved and connected to a second tube having a sliding portion of the spherical surface of the spherical outer surface. Flexible pipe joint. Background technique [0002] As such a flexible tube joint, there are two types. [0003] (A) The flexible tube joint of the type shown in Fig. 13 is formed on a pair of incisors (see Fig. 3), inserted in a radial opposite side by an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16L27/00F16L27/12F16L27/04F16L27/06
CPCF16L27/026F16L27/06F16L27/04
Owner WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO LTD