Foldable joint inner core based on flexible composite liner tube

Abstract

The utility model relates to the technical field of pipeline repair, and discloses a foldable joint inner core based on a flexible composite liner tube, which is a tubular body formed by an arc-shaped base plate, a first arc-shaped plate and a second arc-shaped plate, and the outer diameter of the tubular body is equal to the inner diameter of the liner tube; one end of the first arc-shaped plate and one end of the second arc-shaped plate are hinged to the two ends of the arc-shaped base plate respectively, and the arc lengths of the first arc-shaped plate and the second arc-shaped plate are equal; the other ends of the first arc-shaped plate and the second arc-shaped plate are arc-shaped surfaces taking a hinge shaft of the first arc-shaped plate or the second arc-shaped plate as an axis; and telescopic supporting rods are hinged between the arc-shaped base plate and the first arc-shaped plate and between the arc-shaped base plate and the second arc-shaped plate. The supporting device is designed to be of a foldable tubular body structure, supporting of the lining pipe on the whole circumference can be completed, the problem of local inner collapse of the lining pipe can be effectively solved, and the supporting device can enter the lining pipe conveniently and rapidly and complete supporting operation rapidly.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline repair, in particular to a foldable joint inner core based on a flexible composite liner. Background Art

[0002] The flexible composite lining technology is to fold the flexible composite liner into a U-shape, pass it through the pipeline to be repaired, and then restore it to a round shape by inflating the pipe, so that the flexible composite liner is close to the inner wall of the pipeline to be repaired, thereby forming a "pipe in a pipe" structure to complete the pipeline repair. Flexible composite liner pipes are widely used in trenchless repairs because of their long one-time laying length and adaptability to complex terrain, especially in crossing rivers, dams and reservoirs.

[0003] Before installing the flexible composite liner, a joint needs to be installed on the original pipe. After the liner is installed, the two ends of the liner need to be fixed to the inner wall of the joint with internal support to ensure that the liner does not collapse during the subsequent water delivery process. The current internal support mainly uses multiple internal support rods with adjustable lengths. This support method is difficult to support the entire circumference of the liner, and there is still a problem of partial internal collapse. Under the scouring of water flow, the liner may be detached and affect the repair effect.

[0004] Based on this, the present application provides a foldable joint core based on a flexible composite liner, which is convenient for entering the pipeline for installation and can also form support for the entire circumference of the liner, which can effectively prevent the problem of liner collapse. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art. To this end, the utility model provides a foldable joint inner core based on a flexible composite liner, which is convenient for entering the pipeline for installation and can also form support for the entire circumference of the liner, and can effectively prevent the problem of liner collapse.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provided is a foldable joint inner core for a flexible composite liner, which is a tubular body consisting of an arc-shaped base plate, a first arc-shaped plate and a second arc-shaped plate, the outer diameter of which is equal to the inner diameter of the liner; one end of the first arc-shaped plate and the second arc-shaped plate are respectively hinged to the two ends of the arc-shaped base plate, and the arc lengths of the first arc-shaped plate and the second arc-shaped plate are equal; the other ends of the first arc-shaped plate and the second arc-shaped plate are arranged as an arc-shaped surface with the hinge axis of the first arc-shaped plate or the second arc-shaped plate as the axis; a telescopic support rod is also hingedly installed between the arc-shaped base plate and the first arc-shaped plate and the second arc-shaped plate.

[0008] In a preferred embodiment of the utility model, a plurality of interlocking tenons and grooves are respectively provided on the arc surfaces of the first arc plate and the second arc plate, and the surface of the tenon and the bottom surface of the groove are set as an arc surface with the hinge axis of the first arc plate or the second arc plate as the axis.

[0009] Furthermore, the first curved plate and the second curved plate are also provided with a pin hole penetrating the tenon and the groove. After the tenon and the groove of the first curved plate and the second curved plate are engaged, the pin is inserted into the pin hole to fix them.

[0010] In a preferred embodiment of the present invention, the arc length of the arc-shaped base plate is greater than the arc length of the first arc-shaped plate.

[0011] In a preferred embodiment of the utility model, the support rod includes a sleeve, a nut and a support rod, one end of the sleeve is rotatably mounted on the hinge seat of the arc-shaped base plate through a pin shaft, and the other end is rotatably mounted with a nut, and the support rod is provided with a smooth rod end and a threaded end, the smooth rod end is rotatably mounted on the hinge seat of the first arc-shaped plate or the second arc-shaped plate through a pin shaft, and the threaded end is accommodated in the sleeve.

[0012] Preferably, the nut is movably riveted to the sleeve.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model is designed as a foldable tubular structure, which can not only support the liner on the entire circumference, effectively prevent the problem of local collapse of the liner, but also facilitate quick entry into the liner and quickly complete the support operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0015] Figure 1 This is a folding state diagram of the foldable joint inner core for the flexible composite liner provided by the utility model;

[0016] Figure 2 yes Figure 1 A diagram of the buckling structure of the first curved plate and the second curved plate provided;

[0017] Figure 3 yes Figure 1 A schematic diagram of the structure of the support rod provided;

[0018] Figure 4This is a diagram of the installation state of the foldable joint inner core for the flexible composite liner provided by the utility model;

[0019] Figure 5 The utility model is a diagram of the expanded state of the foldable joint inner core for the flexible composite liner provided by the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1—arc-shaped base plate, 2—first arc-shaped plate, 2.1—tenon, 3—second arc-shaped plate, 3.1—groove, 4—support rod, 4.1—sleeve, 4.2—nut, 4.3—support rod, 4.3.1—smooth rod end, 4.3.2—threaded end, 5—pin, 10—liner, 20—joint. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific position, be constructed and operate in a specific position, and therefore should not be understood as limiting the present invention;

[0025] In addition, the descriptions involving the terms "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Embodiment 1

[0028] As attached Figure 1 As shown, this embodiment provides a foldable joint inner core for a flexible composite liner, which is a tubular body composed of an arc-shaped base plate 1, a first arc-shaped plate 2, and a second arc-shaped plate 3. The outer diameter of the tubular body is equal to the inner diameter of the liner 10; one end of the first arc-shaped plate 2 and the second arc-shaped plate 3 are respectively hinged to the two ends of the arc-shaped base plate 1. Preferably, the arc lengths of the first arc-shaped plate 2 and the second arc-shaped plate 3 are equal, and the arc length of the arc-shaped base plate 1 is greater than the arc length of the first arc-shaped plate 2. This design can make the maximum width of the folded joint inner core smaller than the inner diameter of the liner, so that the joint inner core can quickly enter the liner for operation.

[0029] Preferably, the other ends of the first curved plate 2 and the second curved plate 3 are configured as curved surfaces with the hinge axis of the first curved plate 2 or the second curved plate 3 as the axis. This design can ensure that the first curved plate and the second curved plate can be folded smoothly without interference, and can ensure that the liner is supported on the entire circumference.

[0030] Preferably, a telescopic support rod 4 is hingedly installed between the arc-shaped base plate 1 and the first arc-shaped plate 2 and the second arc-shaped plate 3 to provide a supporting force to support the first arc-shaped plate and the second arc-shaped plate.

[0031] In specific implementation, the folded joint core is placed into the liner pipe mouth, as shown in the attached Figure 4 As shown, first adjust the support rod to prop up the second curved plate, then adjust the support rod to prop up the first curved plate, and finally adjust the two support rods to tighten, and complete the pipe opening of the liner to the inner wall of the joint 20, as shown in the attached Figure 5 shown.

[0032] Embodiment 2

[0033] Based on the first embodiment, as shown in the attached Figure 3 As shown, the support rod 4 of this embodiment includes a sleeve 4.1, a nut 4.2 and a support rod 4.3. One end of the sleeve 4.1 is rotatably mounted on the hinge seat of the arc base plate 1 through a pin shaft, and the other end is rotatably mounted with a nut 4.2. The support rod 4.3 is provided with a smooth rod end 4.3.1 and a threaded end 4.3.2. The smooth rod end 4.3.1 is rotatably mounted on the hinge seat of the first arc plate 2 or the second arc plate 3 through a pin shaft, and the threaded end 4.3.2 is accommodated in the sleeve 4.1.

[0034] Preferably, the nut 4.2 is movably riveted to the sleeve 4.1.

[0035] The support rod designed in this embodiment is designed with a smooth rod end and a threaded end, which can be quickly propped up and tightened to lock the position, facilitating quick installation and disassembly.

[0036] Embodiment 3

[0037] Based on the first or second embodiment, as shown in the attached Figure 1 and attached Figure 2 As shown, in this embodiment, a plurality of interlocking tenons 2.1 and grooves 3.1 are respectively provided on the arc surfaces of the first arc plate 2 and the second arc plate 3, and the surface of the tenon 2.1 and the bottom surface of the groove 3.1 are set as arc surfaces with the hinge axis of the first arc plate 2 or the second arc plate 3 as the axis.

[0038] Furthermore, the first curved plate 2 and the second curved plate 3 are provided with a pin hole penetrating the tenon 2.1 and the groove 3.1. After the tenon and the groove of the first curved plate 2 and the second curved plate 3 are engaged, the pin 5 is inserted into the pin hole to fix them.

[0039] The design of this embodiment can fix the position by a latch after the first arc plate and the second arc plate are spread apart, and the support rod can be removed at this time. On the one hand, the support rod can be reused to save costs, and on the other hand, it can prevent the support rod from blocking the fluid.

[0040] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A foldable joint inner core for a flexible composite liner, characterized in that: A tubular body having an outer diameter equal to the inner diameter of the liner formed by the arc-shaped base plate, the first arc-shaped plate and the second arc-shaped plate; One end of the first arc plate and the second arc plate are respectively hinged to two ends of the arc base plate, and the arc lengths of the first arc plate and the second arc plate are equal; The other ends of the first arc plate and the second arc plate are configured as arc surfaces with the hinge axis of the first arc plate or the second arc plate as the axis center; A telescopic support rod is hingedly installed between the arc-shaped base plate, the first arc-shaped plate and the second arc-shaped plate.

2. The foldable joint inner core for a flexible composite liner according to claim 1 is characterized in that: The first arc plate and the second arc plate are respectively provided with a plurality of interlocking tenons and grooves on their arc surfaces, and the surface of the tenons and the bottom surface of the grooves are arranged as arc surfaces with the hinge axis of the first arc plate or the second arc plate as the axis.

3. The foldable joint inner core for a flexible composite liner according to claim 2 is characterized in that: The first arc plate and the second arc plate are also provided with a latch hole penetrating the tenon and the groove. After the tenon and the groove of the first arc plate and the second arc plate are engaged, the latch is inserted into the latch hole to fix them.

4. The foldable joint inner core for a flexible composite liner according to claim 1 or 3, characterized in that: The arc length of the arc-shaped substrate is greater than the arc length of the first arc-shaped plate.

5. The foldable joint inner core for a flexible composite liner according to claim 1 is characterized in that: The support rod includes a sleeve, a nut and a support rod. One end of the sleeve is rotatably mounted on the hinge seat of the arc-shaped base plate through a pin shaft, and the other end is rotatably mounted with a nut. The support rod is provided with a smooth rod end and a threaded end. The smooth rod end is rotatably mounted on the hinge seat of the first arc-shaped plate or the second arc-shaped plate through a pin shaft, and the threaded end is accommodated in the sleeve.

6. The foldable joint inner core for a flexible composite liner according to claim 5 is characterized in that: The nut is movably riveted to the sleeve.

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