CN114576450A - Composite pipe interface structure and composite pipe adaptable to geological settlement - Google Patents

Composite pipe interface structure and composite pipe adaptable to geological settlement Download PDF

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Publication number
CN114576450A
CN114576450A CN202011389415.4A CN202011389415A CN114576450A CN 114576450 A CN114576450 A CN 114576450A CN 202011389415 A CN202011389415 A CN 202011389415A CN 114576450 A CN114576450 A CN 114576450A
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CN
China
Prior art keywords
socket
pipe
concave surface
composite pipe
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011389415.4A
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Chinese (zh)
Inventor
罗昌斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Smart Bi Pipe Technology Co ltd
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Guangdong Smart Bi Pipe Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Smart Bi Pipe Technology Co ltd filed Critical Guangdong Smart Bi Pipe Technology Co ltd
Priority to CN202011389415.4A priority Critical patent/CN114576450A/en
Publication of CN114576450A publication Critical patent/CN114576450A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/023—Universal and rotating joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
    • F16L27/06—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces

Abstract

The invention discloses a composite pipe interface structure and a composite pipe suitable for geological settlement, wherein the composite pipe interface structure comprises a socket pipe body and a socket pipe body, the socket pipe body comprises a socket inner pipe and a socket outer pipe coated outside the socket inner pipe, the right end of the socket inner pipe is provided with a socket section protruding out of the right end surface of the socket outer pipe, the inner side wall of the socket section is provided with a first centering concave surface, the first centering concave surface is a spherical concave surface or an ellipsoidal concave surface, and the ratio of the minor diameter to the major diameter of an ellipsoid determined by the ellipsoidal concave surface is 0.8-1; the socket body comprises a socket inner pipe and a socket outer pipe coated outside the socket inner pipe, a slot into which a socket section can be inserted is formed between the left end part of the socket inner pipe and the left end part of the socket outer pipe, a first arc-shaped convex surface which is attached to a first centering concave surface is arranged on the outer side wall of the socket inner pipe, and a sealing structure is further arranged between the socket inner pipe and the socket inner pipe. The invention can adapt to geological settlement, and has high connection strength and good sealing property.

Description

Composite pipe interface structure and composite pipe adaptable to geological settlement
Technical Field
The invention relates to the technical field of pipelines, in particular to a composite pipe interface structure and a composite pipe which are suitable for geological settlement.
Background
In order to ensure the strength of the pipeline and simultaneously improve the sealing performance, the composite pipe is produced. The cement-plastic composite pipe is the most common one of the composite pipes, is widely applied to various projects such as water supply and drainage and provides convenience for life of people.
A common cement-plastic composite pipe is generally a structure including an outer pipe of a reinforced cement structure and an inner plastic pipe disposed inside the outer pipe. The existing cement-plastic composite pipe bearing can form a fixed type interface after being inserted together, when the conditions of earthquake, underground water exhaustion, newly-built large-scale buildings and the like occur, different degrees of geological settlement can be caused, at the moment, the interfaces of two pipelines can be bent along with the pipelines, and because the pipeline interface structure is very tightly connected, the stress at the pipeline interfaces can not be released, and the conditions of interface burst or disjointing and the like can be seriously caused.
In order to solve the problems, the invention patent with the application number of 201810293022.
The pipe joint structure has the following problems that the joint of the socket and the joint is loose, the joint strength is low, and the sealing performance of the joint of the socket and the joint is poor due to the fact that a gap exists between the front side surface of the first annular bulge and the rear side surface of the corresponding second annular bulge and a gap also exists between the rear side surface of the first annular bulge and the front side surface of the corresponding second annular bulge.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a composite pipe joint structure that can be adapted to geological settlement, has excellent sealing properties, and has high joint strength.
The invention also aims to provide a composite pipe which can be inserted to form the composite pipe interface structure.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a composite pipe joint structure suitable for geological settlement comprises a socket pipe body and a socket pipe body, wherein the socket pipe body comprises a socket inner pipe and a socket outer pipe coated outside the socket inner pipe, a socket section protruding out of the right end face of the socket outer pipe is arranged at the right end of the socket inner pipe, a first centering concave surface is arranged on the inner side wall of the socket section, the first centering concave surface is a spherical concave surface or an ellipsoidal concave surface, and the ratio of the minor diameter to the major diameter of an ellipsoid determined by the ellipsoidal concave surface is 0.8-1; the socket body include socket inner tube and cladding in the socket outer tube of socket inner tube outside, the left end portion of socket inner tube and the left end portion of socket outer tube between form and supply the socket section inserts slot wherein, be provided with on the lateral wall of socket inner tube with the first arc convex surface of first centering concave surface laminating mutually, still be provided with seal structure between socket inner tube and the socket inner tube.
Preferably, the inside wall of socket section is provided with and is located first screens convex part on first centering concave surface right side, the right side of first arc convex surface is provided with second screens convex part, leave the space between second screens convex part and the first screens convex part and the two can the butt break away from in order to restrict socket inner tube and socket inner tube.
Preferably, the inner side wall of the socket section is provided with a second centering concave surface, the first centering concave surface is a spherical concave surface, the second centering concave surface is a spherical concave surface which is concentric with the first centering concave surface, and the outer side wall of the socket inner tube is provided with a second arc-shaped convex surface which is attached to the second centering concave surface.
Preferably, a third clamping convex part is arranged on the right side of the second centering concave surface, and a fourth clamping convex part which can be abutted with the third clamping convex part to limit the separation of the socket inner pipe and the socket inner pipe is arranged on the right side of the second arc-shaped convex surface.
Preferably, the sealing structure comprises a groove arranged on the first centering concave surface and a first sealing ring fixedly arranged on the groove, and the inner surface of the first sealing ring protrudes out of the first centering concave surface and is in interference fit with the first arc-shaped convex surface.
Preferably, the sealing structure comprises a groove arranged on the first arc-shaped convex surface and a second sealing ring fixedly arranged on the groove, and the outer surface of the second sealing ring protrudes out of the first arc-shaped convex surface and is in interference fit with the first centering concave surface.
Preferably, the sealing structure comprises a third sealing ring located between the socket section and the socket pipe body, the inner side wall of the socket outer pipe is provided with a tapered section which is gradually reduced from left to right, and the socket section is pressed by the tapered section when being inserted into the slot so as to press the third sealing ring.
Preferably, the third sealing ring is fixedly arranged on the inner side wall of the socket section and protrudes out of the inner side surface of the socket section.
Preferably, a convex part is arranged on the inner side wall of the socket section, and the third sealing ring is fixed at the convex part.
Preferably, the socket outer pipe and the socket outer pipe are both cement pipes, and the outer side walls of the socket inner pipe and the socket inner pipe are both provided with relief structures capable of improving adhesive force to cement.
A composite pipe is provided with the socket pipe body at one end and the socket pipe body at the other end.
The invention has the beneficial effects that: when geological settlement occurs, the pipe joints are pressed to bend, and the adjacent pipe joints bend towards different directions. Between adjacent pipelines, the socket inner pipe and the socket inner pipe can relatively rotate for a certain angle around the spherical center or the ellipsoidal center determined by the first centering concave surface, so that the pipeline interface can bear larger bending deformation; in addition, because the first centering concave surface and the first arc-shaped convex surface are mutually attached spherical surfaces, after the socket inner pipe and the socket inner pipe rotate for a certain angle relatively, the socket inner pipe and the socket inner pipe still keep close contact, the sealing performance can be effectively improved, and meanwhile, the connection strength of the socket pipe body and the socket pipe body can be improved.
Drawings
FIG. 1 is a schematic view of a composite pipe joint structure according to example 1 of the present invention;
FIG. 2 is an exploded view of a composite tubing interface structure of example 1 of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a schematic view of a composite pipe of example 1 of the present invention;
FIG. 5 is a schematic view of a composite pipe joint structure according to example 2 of the present invention;
fig. 6 is an enlarged view of a portion B in fig. 5.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "preferred", "less preferred", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "preferred" or "less preferred" may explicitly or implicitly include at least one such feature.
Example 1
Referring to fig. 1 to 4, the present invention provides a composite pipe joint structure capable of adapting to geological settlement, which includes a socket pipe 100 and a socket pipe 200.
The socket body 100 comprises a socket inner tube 1 and a socket outer tube 2 coated outside the socket inner tube 1, the right end of the socket inner tube 1 is provided with a socket section 10 protruding out of the right end face of the socket outer tube 2, the inner side wall of the socket section 10 is provided with a first clamping convex portion 12 and a first centering concave surface 11 located on the left side of the first clamping convex portion 12, the first centering concave surface 11 is a spherical concave surface or an ellipsoidal concave surface, and the ratio of the minor diameter to the major diameter of an ellipsoid determined by the ellipsoidal concave surface is 0.8-1. The first concave centring surface 11 defines a centre of sphere P or ellipsoid on or near the axis of the socket body 1001. The spherical center P or the ellipsoidal center is the rotation center when the socket inner tube 1 and the socket inner tube 3 rotate relatively.
Socket body 200 includes socket inner tube 3 and cladding socket outer tube 4 outside socket inner tube 3, form between the left end portion of socket inner tube 3 and the left end portion of socket outer tube 4 and supply socket section 10 to insert slot 5 wherein, be provided with the first arc convex surface 31 of laminating mutually with first centering concave surface 11 on the lateral wall of socket inner tube 3, the right side of first arc convex surface 31 is provided with second screens convex part 32, leave the space between second screens convex part 32 and the first screens convex part 12 and the two can the butt break away from in order to restrict socket inner tube 1 and socket inner tube 3, still be provided with seal structure between socket inner tube 1 and the socket inner tube 3.
The socket inner pipe 1 and the spigot inner pipe 3 are made of PE, PP-R, PVC or HDPE, and the materials are soft and slightly elastic.
The spigot outer pipe 4 and the socket outer pipe 2 are made of rigid materials, such as reinforced concrete structures or steel materials.
In a preferred scheme of this embodiment, the socket outer pipe 4 and the socket outer pipe 2 are both cement pipes, and in order to improve the adhesion of the socket inner pipe 3 and the socket inner pipe 1 to cement, the outer side walls of the socket inner pipe 3 and the socket inner pipe 1 are both provided with relief structures. The relief structure may be annular reliefs 20 arranged in the circumferential direction, may be helical reliefs arranged in the circumferential direction, may also be elongated reliefs arranged in the axial direction, etc.
A gap can be reserved between the left end face of the socket outer pipe 4 and the right end face of the bell outer pipe 2, and the socket outer pipe can also be directly propped tightly, or an elastic gasket, such as a rubber gasket, is additionally arranged between the left end face and the right end face.
Taking the first concave centering surface 11 as a spherical concave surface as an example, the first arc-shaped convex surface 31 is a spherical convex surface attached thereto. When geological settlement occurs, the pipe joints are pressed to bend, and the adjacent pipe joints bend towards different directions. Between adjacent pipelines, the spigot inner pipe 3 and the socket inner pipe 1 can relatively rotate for a certain angle around a spherical center P determined by the first centering concave surface 11, so that the pipeline interface can bear larger bending deformation; in addition, because the first centering concave surface 11 and the first arc-shaped convex surface 31 are spherical surfaces which are mutually attached, after the socket inner tube 3 and the socket inner tube 1 rotate relatively for a certain angle, the two are still tightly attached, the sealing performance can be effectively improved, and meanwhile, the connection strength of the socket tube body 100 and the socket tube body 200 can be improved.
Further, the inside wall of the socket section 10 is provided with a second centering concave surface 13 located on the right side of the first centering concave surface 11, the second centering concave surface 13 is a spherical concave surface concentric with the first centering concave surface 11, and a second arc-shaped convex surface 33 attached to the second centering concave surface 13 is arranged on the outside wall of the socket inner tube 3. The cooperation of second centering concave 13 and second arc convex surface 33 can further promote the effect of rotation centering, promotes sealing performance and joint strength simultaneously.
Further, the right side of the second centering concave 13 is provided with a third detent convex 14, and the right side of the second arc-shaped convex 33 is provided with a fourth detent convex 34 which can abut against the third detent convex 14 to limit the separation of the socket inner tube 3 and the socket inner tube 1.
Referring to fig. 3, in this embodiment, the sealing structure includes a groove disposed on the first centering concave surface 11 and a first sealing ring 6 fixedly disposed in the groove, and an inner surface of the first sealing ring 6 protrudes from the first centering concave surface 11 and is in interference fit with the first arc-shaped convex surface 31. The groove may be formed by hot pressing or by machining, and the first seal ring 6 is preferably a rubber O-ring which is fixed in the groove by hot pressing.
Further, the sealing structure further comprises a third sealing ring 7 located between the socket section 10 and the socket pipe body 200, the inner side wall of the socket outer pipe 4 is provided with a tapered section 41 which gradually tapers from left to right, when the socket pipe body 200 and the socket pipe body 100 are connected together, the socket section 10 is inserted into the slot 5, and at the moment, the socket section 10 is pressed by the tapered section 41 to compress the third sealing ring 7, so that the sealing performance of the invention is further improved.
In a specific aspect of the present embodiment, the third sealing ring 7 is fixed at the third clamping portion 14 by hot pressing or gluing, and the third sealing ring 7 protrudes from the inner side surface of the socket section 10.
When the first centering concave surface 11 is an ellipsoidal concave surface, the ratio of the minor diameter to the major diameter of the determined ellipsoid is 0.8-1, the ellipsoid is very close to a sphere, and because the socket inner tube 3 and the socket inner tube 1 are plastic tubes and have certain elasticity, the relative rotation range of the socket inner tube 3 and the socket inner tube 1 is generally 0-1.5 degrees, therefore, when geological settlement occurs, the working principle of the scheme is basically the same as that of the scheme that the first centering concave surface 11 is a spherical concave surface.
Referring to fig. 4, the present invention provides a composite pipe capable of being socket-inserted to form the above-described composite pipe joint structure, the composite pipe having the above-described socket body 100 at one end and the above-described socket body 200 at the other end.
Example 2
Fig. 5 and 6 show an embodiment 2 of a composite pipe joint structure according to the present invention, and this embodiment has a similar structure to that of embodiment 1, and differs therefrom in the following two points.
First, in the present embodiment, the second centering concave 13 is located on the left side of the first centering concave 11.
In the second and the present embodiments, the specific structure of the seal structure between the socket inner pipe 1 and the spigot inner pipe 3 is as follows.
In this embodiment, the sealing structure includes a groove disposed on the first arc-shaped convex surface 31 and a second sealing ring 8 fixedly disposed on the groove, and an outer surface of the second sealing ring 8 protrudes from the first arc-shaped convex surface 31 and is in interference fit with the first centering concave surface 11. The sealing structure further comprises a third sealing ring 7 located between the socket section 10 and the socket pipe body 200, the inner side wall of the socket outer pipe 4 is provided with a tapered section 41 which gradually tapers from left to right, when the socket pipe body 200 and the socket pipe body 100 are connected together, the socket section 10 is inserted into the slot 5, and at this time, the socket section 10 is squeezed by the tapered section 41 to compress the third sealing ring 7.
In a specific aspect of the present embodiment, the third sealing ring 7 is fixed at the third clamping protrusion 14 by hot pressing or gluing, and the third sealing ring protrudes from the inner side surface of the socket section 10.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which can be directly or indirectly applied to other related technical fields without departing from the spirit of the present invention, are intended to be included in the scope of the present invention.

Claims (10)

1. A composite pipe interface structure suitable for geological settlement comprises a socket pipe body (100) and a socket pipe body (200), and is characterized in that,
the socket pipe body (100) comprises a socket inner pipe (1) and a socket outer pipe (2) coated outside the socket inner pipe (1), the right end of the socket inner pipe (1) is provided with a socket section (10) protruding out of the right end surface of the socket outer pipe (2), the inner side wall of the socket section (10) is provided with a first centering concave surface (11), the first centering concave surface (11) is a spherical concave surface or an ellipsoidal concave surface, and the ratio of the minor diameter to the major diameter of an ellipsoid determined by the ellipsoidal concave surface is 0.8-1;
socket body (200) include socket inner tube (3) and cladding in socket outer tube (4) outside socket inner tube (3), the left end of socket inner tube (3) and the left end of socket outer tube (4) between form and supply socket section (10) insert slot (5) wherein, be provided with on the lateral wall of socket inner tube (3) with first arc convex surface (31) that first centering concave surface (11) laminated mutually, still be provided with seal structure between socket inner tube (1) and socket inner tube (3).
2. The composite pipe joint structure capable of adapting to geological settlement as claimed in claim 1, wherein the inner side wall of the socket section (10) is provided with a first clamping convex part (12) positioned at the right side of the first centering concave surface (11), the right side of the first arc-shaped convex surface (31) is provided with a second clamping convex part (32), a gap is left between the second clamping convex part (32) and the first clamping convex part (12), and the second clamping convex part and the first clamping convex part can be abutted to limit the socket inner pipe (1) and the socket inner pipe (3) from being separated.
3. The composite pipe joint structure capable of adapting to geological settlement as claimed in claim 1 or 2, wherein the inner side wall of the socket section (10) is provided with a second centering concave surface (13), the first centering concave surface (11) is a spherical concave surface, the second centering concave surface (13) is a spherical concave surface which is concentric with the first centering concave surface (11), and the outer side wall of the socket inner pipe (3) is provided with a second arc-shaped convex surface (33) which is attached to the second centering concave surface (13).
4. The composite pipe joint structure adaptable to geological settlement as recited in claim 1, wherein said sealing structure comprises a groove disposed on said first centering concave surface (11) and a first sealing ring (6) fixedly disposed on said groove, an inner surface of said first sealing ring (6) protrudes from said first centering concave surface (11) and is in interference fit with said first arc-shaped convex surface (31).
5. The composite pipe joint structure adaptable to geological settlement as recited in claim 1, wherein said sealing structure comprises a groove disposed on said first curved convex surface (31) and a second sealing ring (8) fixedly disposed on said groove, and an outer surface of said second sealing ring (8) protrudes from said first curved convex surface (31) and is in interference fit with said first centering concave surface (11).
6. The composite pipe joint structure capable of adapting to geological settlement according to claim 1, wherein the sealing structure comprises a third sealing ring (7) positioned between the socket section (10) and the socket pipe body (200), the inner side wall of the socket outer pipe (4) is provided with a tapered section (41) which is gradually reduced from left to right, and the socket section (10) is pressed by the tapered section (41) when being inserted into the slot (5) so as to press the third sealing ring (7).
7. The composite pipe joint structure adaptable to geological settlement according to claim 6, wherein the third sealing ring (7) is fixedly arranged on the inner side wall of the socket section (10) and protrudes from the inner side surface of the socket section (10).
8. Composite pipe joint structure adaptable to geological settlement according to claim 7, characterized in that the inner side wall of the socket section (10) is provided with a convex portion, and the third sealing ring (7) is fixed at the convex portion.
9. The composite pipe interface structure capable of adapting to geological settlement according to claim 1, wherein the spigot outer pipe (4) and the socket outer pipe (2) are both cement pipes, and the outer side walls of the spigot inner pipe (3) and the socket inner pipe (1) are both provided with a convex pattern structure capable of improving the adhesion force to cement.
10. A composite pipe, characterized in that one end of the composite pipe is provided with a socket body (100) according to any one of claims 1-9 and the other end is provided with a socket body (200) according to any one of claims 1-9.
CN202011389415.4A 2020-12-02 2020-12-02 Composite pipe interface structure and composite pipe adaptable to geological settlement Pending CN114576450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011389415.4A CN114576450A (en) 2020-12-02 2020-12-02 Composite pipe interface structure and composite pipe adaptable to geological settlement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011389415.4A CN114576450A (en) 2020-12-02 2020-12-02 Composite pipe interface structure and composite pipe adaptable to geological settlement

Publications (1)

Publication Number Publication Date
CN114576450A true CN114576450A (en) 2022-06-03

Family

ID=81768498

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011389415.4A Pending CN114576450A (en) 2020-12-02 2020-12-02 Composite pipe interface structure and composite pipe adaptable to geological settlement

Country Status (1)

Country Link
CN (1) CN114576450A (en)

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