CN112032446A - Detachable pipeline interface structure capable of adapting to geological settlement - Google Patents

Abstract

The invention discloses a detachable pipeline interface structure capable of adapting to geological settlement, which comprises a socket pipe body, a socket pipe body and a sealing ring, wherein the socket pipe body is provided with a socket opening; the right end of the socket pipe body is provided with a socket section, the inner wall of the socket section is provided with a first flat wall section, a socket connecting section and a second flat wall section, and the socket connecting section is provided with internal threads; the left end of socket body is provided with the socket section that can insert in the hole of socket section, is provided with third flat wall section, socket linkage segment and fourth flat wall section on the outer wall of socket section, and the socket linkage segment is provided with the external screw thread, and external screw thread and internal thread meshing leave the clearance between the left surface of external screw thread and the internal screw thread right flank, and the right flank of external screw thread closely laminates with the internal screw thread left surface. The invention can release the stress at the interface when the geology is settled, has long service life, excellent sealing performance, high axial connection strength and can be disassembled.

Description

Detachable pipeline interface structure capable of adapting to geological settlement

Technical Field

The invention relates to a pipeline interface structure, in particular to a detachable pipeline interface structure which can adapt to geological settlement.

Background

Pipelines are devices for transporting gases, liquids or fluids with solid particles, which are widely used in hydraulic engineering and various industrial devices. The pipeline is usually made of reinforced concrete or other soft materials (such as PE, HDPE and the like), and the connecting part of the pipeline made of reinforced concrete has the defects of no tensile strength, low water-stopping performance, poor corrosion resistance and the like, so the application prospect of the pipeline is lower than that of the pipeline made of soft materials.

The existing connection modes between pipe joints of large-caliber flexible pipes generally include hot melt butt joint, clamp connection, heat shrinkable tape connection, threaded connection or clamping connection, self-locking socket type connection and the like. The self-locking socket type connection can be installed with water, the installation space is small, the construction is safer, the butt joint speed is high, and the method is a substitute method for pipeline design and construction, saves time and cost, and can reduce the construction space on a large scale.

In the traditional socket type pipeline joint, a first annular bulge is arranged on the outer surface of a pipeline socket, a second annular bulge is arranged on the inner surface of a pipeline socket, after the socket is butted with the socket, the front side surface of the first annular bulge is tightly attached to the rear side surface of the second annular bulge, and the rear side surface of the first annular bulge is tightly attached to the front side surface of the second annular bulge; however, the following problems also exist: due to the fact that the situations of earthquake, underground water exhaustion, large buildings newly built and the like can cause geological settlement of different degrees, when the geological settlement occurs, the joints of the two pipelines can bend along with the geological settlement, and due to the fact that the pipeline joint structure is very tightly connected, stress at the joints of the pipelines cannot be released, and the joints are seriously cracked.

In order to solve the problems, the invention patent with the application number of 201810293022.

The pipeline interface structure also has the following problems that because a gap exists between the front side surface of the first-class annular bulge and the rear side surface of the corresponding second-class annular bulge, and a gap also exists between the rear side surface of the first-class annular bulge and the front side surface of the corresponding second-class annular bulge, the sealing performance of the joint of the socket and the interface is poor, and the axial connection strength is not high; in addition, after the pipeline is butted, the pipeline cannot be disassembled, and the pipeline can only be disassembled in a violent destruction mode.

Disclosure of Invention

In view of this, the present invention provides a detachable flexible pipe joint structure capable of releasing stress at a joint during geological settlement, and having a long service life, excellent sealing performance, and high axial connection strength.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a removable pipe joint structure of adaptable geological settlement, it includes:

the socket comprises a socket pipe body, wherein a socket section is arranged at the right end of the socket pipe body, a first flat wall section, a socket connecting section and a second flat wall section are sequentially arranged on the inner wall of the socket section from right to left, an internal thread is arranged on the socket connecting section, a first matching surface is arranged on the right side wall of the thread of the internal thread, and a second matching surface is arranged on the left side wall of the thread of the internal thread;

the socket comprises a socket body, wherein the left end of the socket body is provided with a socket section which can be inserted into an inner hole of a socket section, the outer wall of the socket section is provided with a third flat wall section matched with the first flat wall section, a socket connecting section matched with the socket connecting section and a fourth flat wall section matched with the second flat wall section, the socket connecting section is provided with an external thread, the left side wall of a thread of the external thread is provided with a third matching surface, the right side wall of the thread of the external thread is provided with a fourth matching surface, a gap is reserved between the third matching surface and the corresponding first matching surface, the fourth matching surface is tightly attached to the corresponding second matching surface, and a jacking structure which can enable the fourth matching surface and the second matching surface to be kept in a tight attaching state is further arranged between the socket body and the socket body;

the sealing ring, the outer wall of socket section and the inner wall of bellmouth section between be provided with the seal groove, the sealing ring set up in the seal groove in.

Preferably, the left side of the top of the thread of the internal thread is provided with a first notch so that a gap is formed between the left side of the thread of the internal thread and the corresponding fourth matching surface.

Preferably, the right side of the thread top of the external thread is provided with a second notch so that a gap is formed between the right side of the thread of the external thread and the corresponding second matching surface.

Preferably, the thread shape of the external thread is one or a combination of any more of a triangle, a trapezoid and a circular arc bulge.

Preferably, the pressing structure includes a limit step which is arranged in the socket pipe body and can be abutted against the left end face of the socket pipe body.

Preferably, the sealing ring is made of water-swellable material; or the sealing ring is a rubber sealing ring, and an expansion layer made of a water-swellable material is arranged between the rubber sealing ring and the bottom surface of the sealing groove.

Preferably, the number of the sealing grooves is one, and the sealing grooves are arranged between the first flat wall section and the third flat wall section or between the second flat wall section and the fourth flat wall section.

Preferably, the socket connecting section is tapered, and the diameter of the left end of the socket connecting section is smaller than that of the right end of the socket connecting section.

Preferably, the internal thread is a single thread, a double thread or a multiple thread; the external thread is a single-start thread, a double-start thread or a multi-start thread.

Preferably, the third fitting surface is a first included angle a with the axis of the socket pipe body, the first included angle a is an acute angle, the fourth fitting surface is a second included angle b with the axis of the socket pipe body, the second included angle b is an acute angle or a right angle, and the first included angle a is smaller than the second included angle b by at least 10 degrees.

Preferably, a chamfer is provided between the fourth flat wall section and the left end face of the socket body.

The invention has the beneficial effects that:

firstly, when geological settlement occurs, the pipeline interface is bent, and in the invention, because gaps capable of releasing stress are reserved between the third matching surface and the first matching surface, when the pipeline interface is bent and deformed, the gaps can release stress, so that the pipeline interface can bear larger bending deformation, and the pipeline interface is prevented from being broken due to overlarge stress;

secondly, because the fourth fitting surface all closely laminates with the second fitting surface of the annular groove that corresponds, can promote sealing performance, and strengthened axial joint strength.

Thirdly, in the process of production and processing, the bottom of the second matching surface is likely to generate arc transition due to the existing process conditions, and the first notch arranged on the left side of the top of the convex tooth can avoid the arc transition structure, so that the four matching surfaces can be tightly attached to the upper part of the second matching surface.

Fourthly, the left end of the socket pipe body is also provided with a fourth flat wall section, when the socket pipe body and the bellmouth pipe body are connected together, the fourth flat wall section is firstly inserted into the bellmouth pipe body to support the socket pipe body, at the moment, the fourth flat wall section can play a role in centering, the socket pipe body is pushed and pressed leftwards after the support, and the socket section of the socket pipe body is inserted into the bellmouth section of the bellmouth pipe body, so that the socket pipe body is very convenient;

fifthly, adopt and meet water expanding material and seal, when the condition of leaking appears in seal groove department, meet water expanding material can expand, plug up the position of leaking, promote sealing performance.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view showing an exploded state of embodiment 1 of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a schematic structural view of a pipe body for assembling and forming embodiment 1 of the present invention;

FIG. 5 is a schematic view showing the fitting structure of male and female screws in embodiment 2 of the present invention;

FIG. 6 is a schematic view showing the fitting structure of male and female screws in embodiment 3 of the present invention;

fig. 7 is a schematic view of the fitting structure of the male screw thread and the female screw thread in embodiment 4 of the present invention.

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 the directional indicators (such as up, down, 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. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, the invention provides a detachable pipe joint structure adaptable to geological settlement, which comprises a socket pipe body, a socket pipe body and a sealing ring 3; the right end of the socket pipe body is provided with a socket section 1, the inner wall of the socket section 1 is provided with a first flat wall section 11, a socket connecting section 12 and a second flat wall section 13 which are sequentially arranged from right to left, the socket connecting section 12 is provided with an internal thread 100, the right side wall of the thread of the internal thread 100 is provided with a first matching surface 101, and the left side wall of the thread of the internal thread 100 is provided with a second matching surface 102; the left end of the socket pipe body is provided with a socket section 2 which can be inserted into an inner hole of the socket section 1, the outer wall of the socket section 2 is provided with a third flat wall section 21 matched with the first flat wall section 11, a socket connecting section 22 matched with the socket connecting section 12 and a fourth flat wall section 23 matched with the second flat wall section 13, the socket connecting section 22 is provided with an external thread 200, the left side wall of the thread of the external thread 200 is provided with a third matching surface 201, the right side wall of the thread of the external thread 200 is provided with a fourth matching surface 202, a gap 6 is reserved between the third matching surface 201 and the corresponding first matching surface 101, the fourth matching surface 202 is tightly attached to the corresponding second matching surface 102, and a jacking structure which can enable the fourth matching surface 202 to be tightly attached to the second matching surface 102 is further arranged between the socket pipe body and the socket pipe body; a sealing groove 4 is formed between the outer wall of the socket section 2 and the inner wall of the socket section 1, and the sealing ring 3 is arranged in the sealing groove 4.

The minimum diameter of the first flat wall section 11 is greater than or equal to the bottom diameter of the internal thread 100, and the diameter of the top of the internal thread 100 is greater than or equal to the maximum diameter of the second flat wall section 13; the first flat wall section 11 is cylindrical or tapered from right to left, preferably cylindrical, and the second flat wall section 13 is cylindrical or tapered from right to left, preferably cylindrical. The third flat wall section 21, the external threads 200, and the fourth flat wall section 23 are all provided in a configuration that mates with the above-described configuration. The first flat wall section 11 and the third flat wall section 21 are in clearance fit or transition fit, and the second flat wall section 13 and the fourth flat wall section 23 are in clearance fit or transition fit.

In the invention, because the gaps 6 capable of releasing stress are reserved between the third matching surface 201 and the first matching surface 101, when the pipeline interface is bent and deformed, the gaps 6 between the external threads 200 and the internal threads 100 can release stress, so that the pipeline interface can bear larger bending deformation, and the pipeline interface is prevented from being broken due to overlarge stress. In addition, because the fourth matching surface 202 is tightly attached to the second matching surface 102 of the corresponding annular groove 100, the sealing performance can be improved, and the axial connection strength is enhanced, when geological settlement occurs, the tightly-matched second matching surface 102 and the fourth matching surface 202 can bear the axial tension between two pipelines, and the pipelines are prevented from being axially separated. The left end of socket body still is provided with fourth flat wall section 23, when linking together socket body and bellmouth body, at first inserts the bellmouth body with fourth flat wall section 23, holds the socket body, and fourth flat wall section 23 can play the effect of centering this moment, holds back and bulldozes the socket body to a left side, makes in socket section 2 of socket body inserts the bellmouth section 1 of bellmouth body, and is very convenient. To further increase the efficiency of the plugging, a chamfer 25 is provided between the left end of the fourth flat wall section 23 and the left end face of the socket body.

As a further improvement of this embodiment, the left side of the top of the thread of the internal thread 100 is provided with a first notch 300 so that a gap is formed between the left side of the top of the internal thread 100 and the corresponding second mating surface 102. In the production process, limited by the existing process conditions, the bottom of the second matching surface 102 may have a slight arc transition, and the first notch 300 disposed on the left side of the top of the tooth may avoid the arc transition structure, so that the four matching surfaces 202 and the upper portion of the second matching surface 102 can be tightly attached.

In this embodiment, the thread shape of the external thread 200 is triangular, and the thread shape of the internal thread 100 is matched with the triangular thread shape. The top pressure structure comprises a limiting step 400 which is arranged in the socket pipe body and can be abutted against the left end face of the socket pipe body.

In practical engineering application, a socket pipe and a spigot pipe are generally made into the same structure, the pipe structure is shown in fig. 4, one end of the pipe is provided with a socket section 1, the other end of the pipe is provided with a spigot section 2 matched with the socket section 1, and a limiting step 400 is arranged inside the pipe.

In this embodiment, the number of the seal grooves 4 is one, and the seal groove 4 is disposed between the first flat wall section 11 and the third flat wall section 21. In some embodiments of the invention, it is also possible to arrange the sealing groove 4 between the second planar wall section 13 and the fourth planar wall section 23.

The sealing ring 3 is a rubber sealing ring 3, and an expansion layer 5 made of a water-swelling material is arranged between the rubber sealing ring 3 and the bottom surface of the sealing groove 4. The advantage of design like this is, when the condition that appears leaking in seal groove 4 department, inflation layer 5 can expand, plugs up the position that leaks, promotes sealing performance. Common water-swellable materials include water-swellable rubber waterstops and the like. Of course, in some embodiments of the present invention, the sealing ring 3 may also be made of a water-swellable material.

In this embodiment, the spigot connection section 22 is cylindrical, with the diameter of the left end being equal to the diameter of the right end, and the socket connection section 12 is also cylindrical, with the diameter of the left end being equal to the diameter of the right end.

The third fitting surface 201 and the axis of the socket pipe body form a first included angle a, the first included angle a is an acute angle, the fourth fitting surface 202 and the axis of the socket pipe body form a second included angle b, the second included angle b is an acute angle, and the first included angle a is at least 10 degrees smaller than the second included angle b. Such as: the first included angle a is 40 degrees, and the second included angle b is 70 degrees; or the first angle a is 35 deg. and the second angle b is 75 deg.. The design is such that when two pipes are connected together, the spigot section 2 of one pipe can be pushed into the socket section 1 of the other pipe by means of axial compression.

The first mating surface 101 may be designed to be parallel to the third mating surface 201, and a gap with the same width is formed between the two; the first mating surface 101 may also be designed to be non-parallel to the third mating surface 201, with a gap of unequal width therebetween.

The internal thread 100 is a single-start thread, a double-start thread, or a multiple-start thread; the external thread 200 is a single start thread, a double start thread, or a multiple start thread. Preferably, the internal thread 100 and the external thread 200 are both triple threads.

The socket pipe body and the socket pipe body are made of PE, PP-R, PVC or HDPE which are soft and have a little elasticity.

The socket pipe body is provided with a step surface 24 corresponding to the right end surface of the socket pipe body, and a gap is reserved between the step surface 24 and the right end surface of the socket pipe body.

Example 2

Fig. 5 shows embodiment 2 of the present invention, and this embodiment has a similar structure to embodiment 1, except that: first, in the present embodiment, the thread shape of the external thread 200 is trapezoidal; in the second and the present embodiments, the socket connection section 22 is tapered, and the diameter of the left end is smaller than that of the right end, and the socket connection section 12 is tapered, and the diameter of the left end is smaller than that of the right end. The conical structure is adopted, so that the spigot section 2 of one pipeline can be inserted into the socket section 1 of the other pipeline to connect the two pipelines.

Example 3

Fig. 6 shows embodiment 3 of the present invention, and this embodiment has a similar structure to embodiment 1, except that: in the present embodiment, the left side of the thread crest of the internal thread 100 does not have a structure similar to the first cutout 300 in embodiment 1.

Example 4

Fig. 7 shows embodiment 4 of the present invention, which has a similar structure to embodiment 1, except that: in this embodiment, the left side of the thread top of the internal thread 100 also has the same first notch 300 as that of embodiment 1, and the right side of the thread top of the external thread 200 is provided with the second notch 500 so that a gap is formed between the right side of the thread of the external thread 200 and the corresponding second mating surface 102.

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. The utility model provides a removable pipeline interface structure of adaptable geology subsides which characterized in that, it includes:

the socket comprises a socket pipe body, wherein a socket section (1) is arranged at the right end of the socket pipe body, a first flat wall section (11), a socket connecting section (12) and a second flat wall section (13) which are sequentially arranged from right to left are arranged on the inner wall of the socket section (1), an internal thread (100) is arranged on the socket connecting section (12), a first matching surface (101) is arranged on the right side wall of a thread of the internal thread (100), and a second matching surface (102) is arranged on the left side wall of the thread of the internal thread (100);

the socket pipe body, the left end of socket pipe body is provided with can insert socket section (2) in the hole of socket section (1), be provided with on the outer wall of socket section (2) with first flat wall section (11) complex third flat wall section (21), with socket linkage segment (12) complex socket linkage segment (22) and with second flat wall section (13) complex fourth flat wall section (23), socket linkage segment (22) be provided with external screw thread (200), be provided with third fitting surface (201) on the left side wall of the thread of external screw thread (200), be provided with fourth fitting surface (202) on the right side wall of the thread of external screw thread (200), leave clearance (6) between third fitting surface (201) and corresponding first fitting surface (101), fourth fitting surface (202) closely laminate with corresponding second fitting surface (102), a jacking structure which can enable the fourth matching surface (202) and the second matching surface (102) to keep a close-fitting state is further arranged between the socket pipe body and the socket pipe body;

sealing washer (3), the outer wall of socket section (2) and the inner wall of socket section (1) between be provided with seal groove (4), sealing washer (3) set up in seal groove (4) in.

2. The detachable pipe interface structure adaptable to geological subsidence of claim 1, wherein the left side of the top of the thread of the internal thread (100) is provided with a first notch (300) to form a gap between the left side of the thread of the internal thread (100) and the corresponding fourth mating surface (202).

3. The detachable pipe interface structure adaptable to geological subsidence of claim 1, wherein the right side of the top of the thread of the external thread (200) is provided with a second notch (500) to form a gap between the right side of the thread of the external thread (200) and the corresponding second mating surface (102).

4. The detachable pipe joint structure adaptable to geological settlement of claim 1, wherein the tooth shape of the external thread (200) is one or a combination of any more of triangle, trapezoid and arc bulge.

5. The detachable pipe joint structure adaptable to geological settlement of claim 1, wherein the top pressing structure comprises a limiting step (400) arranged in the socket pipe body and capable of abutting against the left end face of the socket pipe body.

6. The detachable pipe joint structure adaptable to geological settlement according to claim 1, wherein the sealing ring (3) is made of water-swellable material; or the sealing ring (3) is a rubber sealing ring (3), and an expansion layer (5) made of a water-swellable material is arranged between the bottom surfaces of the rubber sealing ring (3) and the sealing groove (4).

7. A detachable pipe joint structure adaptable to geological settlement according to claim 1, wherein the socket connecting section (22) is tapered such that the diameter of the left end is smaller than that of the right end, and the socket connecting section (12) is tapered such that the diameter of the left end is smaller than that of the right end.

8. The detachable pipe interface structure adaptable to geological settlement of claim 1, wherein the internal thread (100) is a single thread, a double thread or a multiple thread; the external thread (200) is a single-start thread, a double-start thread or a multi-start thread.

9. A detachable pipe interface structure adapted to geological subsidence according to claim 1, wherein the third mating surface (201) forms a first angle a with the axis of the socket pipe, the first angle a is an acute angle, the fourth mating surface (202) forms a second angle b with the axis of the socket pipe, the second angle b is an acute angle or a right angle, and the first angle a is smaller than the second angle b by at least 10 °.

10. A detachable pipe joint structure adapted to geological subsidence, according to claim 1, characterized in that a chamfer (25) is provided between the fourth flat wall section (23) and the left end face of the socket body.

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