CN116201977A - Steel-plastic conversion tube with protective sleeve - Google Patents

Abstract

The invention discloses a steel-plastic conversion pipe with a protective sleeve, which comprises a pipe body, first ring parts are arranged at both ends of the pipe body in the axial direction, and the inner side of the end of the pipe body and the inner side of the first ring part are both provided with The chute, the axial ends of the pipe body are respectively provided with a first shell and a second shell, and the first shell is provided with a mounting hole. In the present invention, thermosetting glue is arranged in the first capsule, quicklime and activated carbon are arranged in the second capsule, water is arranged in the third capsule, and the first capsule is pierced by the second puncture rod to make the thermosetting glue leak When it comes out, the first puncture rod pierces the third capsule, so that the water flows out and contacts the quicklime. The quicklime can release a lot of heat when it meets water, so that the thermosetting adhesive can be cured by heat. Compared with the snap connection, the use of thermosetting adhesive bonding It is more firm, ensuring that it is not easy to fall off after long-term use, and does not need to use additional heating equipment, which improves the convenience of installing the protective cover in a small space.

Description

A steel-plastic conversion pipe with a protective cover

technical field

The invention relates to the technical field of pipeline connection, in particular to a steel-plastic conversion pipe with a protective sleeve.

Background technique

At present, the PE end of the steel-plastic conversion joint at the steel-plastic conversion point in the buried and household gas pipeline network is a weak point of stress concentration, which is prone to scratches or shear damage during transportation, construction and use. certain impact on operational safety.

The general method is to add a section of equal-diameter PE pipe as a casing at the weak point of steel-plastic conversion, or use a wide and narrow section of sheath pipe with different diameters for protection. The sheath pipe is composed of two halves in the axial direction. Several buckles are connected. Since the buckles are mostly made of plastic and are small in size, their structural strength will decrease after long-term use. When buried in the ground, due to long-term load or due to the external soil pressure of the PE casing and the internal The existence of gaps leads to unbalanced internal and external pressure, and the buckle is easily deformed, failed or broken, so that the steel-plastic conversion joint loses its protective effect.

Contents of the invention

The object of the present invention is to propose a steel-plastic conversion pipe with a protective cover in order to solve the above problems.

In order to achieve the above object, the present invention adopts the following technical solutions:

A steel-plastic conversion pipe with a protective sleeve, comprising a pipe body, first ring parts are provided at both axial ends of the pipe body, and the inside of the end of the pipe body and the inside of the first ring part are provided with A chute, the axial ends of the pipe body are respectively provided with a first shell and a second shell, the first shell is provided with a mounting hole, and the outer circumference of the pipe body is provided with two semicircular arcs The sheath segment, the axial ends of the sheath segment are provided with a semi-arc-shaped connecting segment, the inner side of the sheath segment is provided with a semi-arc-shaped first protrusion, and the two sheath segments Adhesive parts are arranged between the casing sheets; the adhesive parts include two third casings, and the two third casings are respectively arranged on the two jacket sheets, one of which is the third casing. A first plate, a first capsule, an elastic component and a first puncture rod are arranged in the housing, a second board, a second capsule and a third capsule are provided in the third housing, and the first The second plate is provided with a second puncture rod, the first plate is provided with a first through hole, the second plate is provided with a second through hole, the inside of the first capsule is provided with a thermal Solid glue, the interior of the second capsule is provided with quicklime and activated carbon, and the interior of the third capsule is provided with water.

Preferably, the outer circumferences of both ends of the tubular body in the axial direction and the outer circumference of the first ring member close to the end of the tubular body are provided with annular protrusions, and the two annular protrusions are connected by bolts.

Preferably, both the first housing and the second housing are of spherical structure, the installation holes are provided in multiples, and the two slide grooves in the pipe body and the first ring are provided with the first A sealing ring, the first housing and the second housing are in sliding contact with the sliding groove, and both are in sliding contact with the first sealing ring.

Preferably, the first protrusions are provided in multiples and arranged at equal intervals along the axial direction of the sheath segment, and the inner sides of the first protrusions abut against the outer wall of the tubular body.

Preferably, a semi-arc-shaped second protrusion is provided on the outer periphery of the connecting segment near one end of the sheath segment, and the second protrusion is fixedly connected to the annular protrusion through bolts.

Preferably, a second ring is provided on the inner side of the connecting segment away from the end of the sheath segment, and the inner side of the second ring is provided with plugging glue.

Preferably, the elastic assembly includes a cylinder, a rod is provided inside the cylinder, the upper end of the rod extends to the outside of the cylinder, and a connecting rod is provided at the extension end, the lower end of the rod is connected to the first puncture The rods are fixedly connected, the first puncture rod is located in the cylinder, and the two are slidably connected, and an elastic member is arranged between the top of the cylinder and the first puncture rod.

Preferably, the bottom of the first puncture rod and the top of the second puncture rod are conical structures, the second puncture rod is provided with a plurality of fixing rings, the second capsule is made of non-woven material, The first puncture rod is arranged coaxially with the second through hole, the second puncture rod is arranged coaxially with the first through hole, and a second sealing ring is arranged in the second through hole.

Preferably, a heat-shrinkable sheath is also included, and the heat-shrinkable sheath wraps the tube body, the sleeve piece, the connection piece, the first shell and the second shell, so as to protect the metal part of the device from corrosion.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

1. In this application, a sheath segment is provided, and an adhesive part is provided on the sheath segment, and the adhesive part is provided with a first capsule, a second capsule, a third capsule, a first puncture rod and a second puncture rod. Rod, thermosetting glue is set in the first capsule, quicklime and activated carbon are set in the second capsule, and water is set in the third capsule. When installing the protective cover, rely on the second puncture rod to puncture the first capsule to make the The solid glue leaks out, and after standing for a period of time until all the thermosetting glue leaks completely, the first puncture rod pierces the third capsule, so that the water flows out and contacts the quicklime, and the quicklime can release a large amount of heat when it meets water, so that the The thermosetting adhesive can be cured by heat, and then play the role of bonding the sheath segment. Compared with the snap connection, the thermosetting adhesive is more firmly bonded to ensure that it is not easy to fall off after long-term use, and it is heated by self-heating The heat-curing adhesive eliminates the need to use additional heating equipment, which helps to improve the ease of installing the protective cover in small spaces.

2. In this application, by setting the pipe body, the first shell and the second shell are respectively arranged at both ends of the pipe body. Both the first shell and the second shell are in sliding contact with the end of the pipe body. When not synchronous, the first housing and the second housing deflect, so that the joint between the PE pipe and the steel pipe still has good sealing and structural strength, thereby improving the reliability of the conversion pipe.

Description of drawings

Figure 1 shows a schematic diagram of the overall structure of a conversion tube and a protective sleeve provided according to Embodiment 1 of the present invention;

Fig. 2 shows a schematic diagram of the combined structure of a conversion tube and a protective sleeve provided according to Embodiment 1 of the present invention;

Fig. 3 shows a schematic diagram of the overall structure of the conversion tube provided according to Embodiment 1 of the present invention;

Fig. 4 shows a schematic diagram of an exploded structure of a conversion tube provided according to Embodiment 1 of the present invention;

Fig. 5 shows a schematic diagram of an exploded structure of a protective sheath provided according to Embodiment 1 of the present invention;

Fig. 6 shows a schematic structural diagram of a third housing, a first capsule, a second capsule and a third capsule according to Embodiment 1 of the present invention;

Fig. 7 shows a schematic structural diagram of a third housing, a first puncture rod and a second puncture rod provided according to Embodiment 1 of the present invention;

Fig. 8 shows a schematic structural view of the first puncture rod and the elastic member according to Embodiment 1 of the present invention.

FIG. 9 shows a schematic diagram of the overall structure provided according to Embodiment 2 of the present invention.

illustration:

1. Pipe body; 2. The first ring; 3. The chute; 4. The first shell; 5. The second shell; 6. The first sealing ring; 7. The sheath segment; 8. The first protrusion 9. Connecting segment; 10. Second ring piece; 11. Plugging cement; 12. Third shell; 13. First capsule; 14. Cylinder body; 15. Rod body; 16. Elastic part; The first puncture rod; 18, the connecting rod; 19, the first through hole; 20, the second capsule; 21, the third capsule; 22, the second puncture rod; 23, the fixing ring; 24, the second through hole; 25. Second sealing ring; 26. Mounting hole; 27. Annular protrusion; 28. Second protrusion; 29. First plate body; 30. Second plate body; 31 Heat-shrinkable sheath.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example 1

Referring to Figures 1-8, the present invention provides a technical solution:

A steel-plastic conversion pipe with a protective sleeve, comprising a pipe body 1, first ring members 2 are arranged at both ends of the pipe body 1 in the axial direction, and the inside of the end of the pipe body 1 and the inner side of the first ring member 2 are both arranged There is a chute 3, and the axial ends of the pipe body 1 are respectively provided with a first shell 4 and a second shell 5, and the first shell 4 is provided with a mounting hole 26, and the PE pipe is inserted into the mounting hole 26, The steel pipe and the second shell 5 are connected by flanges. During the embedding process, it is necessary to keep the pipe body 1 coaxial with the PE pipe and the steel pipe. Both ends of the sheath segment 7 in the axial direction are provided with a semi-arc-shaped connecting segment 9, and the inner side of the sheath segment 7 is provided with a semi-arc-shaped first protrusion 8, between the two sheath segments 7 An adhesive part is provided. The bonding part is used to connect two sheath segments 7, and the sheath segment 7 supports and protects the connection part between the PE pipe and the steel pipe.

Specifically, as shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the first housing 4 and the second housing 5 are all spherical structures, and there are multiple mounting holes 26, and multiple mounting holes 26 The hole diameters are not the same, the two mounting holes 26 form a group, and are distributed at both ends of the spherical diameter direction of the first housing 4, and the different mounting holes 26 are used to adapt to PE pipes of different diameters, and the PE pipes and The gap between the mounting holes 26 is provided with a sealing gasket, and the first sealing ring 6 is arranged on the two slide grooves 3 in the pipe body 1 and the first ring member 2, and the first housing 4 and the second housing 5 are connected with each other. The chute 3 is in sliding contact, and both are in sliding contact with the first sealing ring 6 . The first sealing ring 6 is used to enhance the airtightness of the connection part between the PE pipe and the first casing 4 and the connection part between the steel pipe and the second casing 5. While ensuring the sealing, the first casing 4 and the second casing 5 Both slide with the chute 3, and when the settlement is not uniform, the deflection of the first shell 4 and the second shell 5 reduces the bending pressure on the transition tube structure, thereby improving the structural stability of the transition tube. There are a plurality of first protrusions 8 arranged at equal intervals along the axial direction of the sheath segment 7 , and the inner side of the first protrusions 8 abuts against the outer wall of the tubular body 1 . The first protrusion 8 supports the tubular body 1 , and at the same time, the first protrusion 8 can increase the structural strength of the sheath segment 7 . Annular protrusions 27 are provided on the outer circumferences of both axial ends of the pipe body 1 and the outer circumference of the first ring member 2 near the end of the pipe body 1 , and the two annular protrusions 27 are connected by bolts. A semicircular second protrusion 28 is provided on the outer periphery of the connecting segment 9 close to the end of the sheath segment 7 , and the second protrusion 28 is fixedly connected to the annular protrusion 27 by bolts. The pipe body 1, the first ring member 2 and the connecting segment 9 are connected as a whole by bolts, which is convenient for disassembly and assembly, and has a stable and reliable structure. A second ring 10 is provided on the inner side of the connecting segment 9 away from the end of the sheath segment 7 , and a plugging cement 11 is provided on the inner side of the second ring 10 . The connecting segment 9 and the second ring piece 10 are integrally formed, and the plugging cement 11 is filled in the gap between the second ring piece 10, the PE pipe and the steel pipe, which is used to improve the sealing performance inside the conversion pipe and reduce corrosive substances into the transition tube.

Specifically, as shown in Fig. 1, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the bonding part includes two third shells 12, and the two third shells 12 are respectively arranged on the two sheath segments 7 Above, the third housing 12 is fixedly connected to the arc end of the sheath segment 7, and one of the third housings 12 is provided with a first plate 29, a first capsule 13, an elastic assembly and a first puncture rod 17. Another third housing 12 is provided with a second plate 30, a second capsule 20 and a third capsule 21. The second plate 30 is provided with a second puncture rod 22, and the first plate 29 is provided with The first through hole 19 is provided, the second plate body 30 is provided with the second through hole 24, the inside of the first capsule 13 is provided with thermosetting glue, the inside of the second capsule 20 is provided with quicklime and activated carbon, the third The inside of the capsule 21 is provided with water. The elastic assembly includes a cylinder body 14, a rod body 15 is arranged inside the cylinder body 14, the upper end of the rod body 15 extends to the outside of the cylinder body 14, and a connecting rod 18 is provided at the extension end, and the lower end of the rod body 15 is fixedly connected with the first puncture rod 17 , the first puncture rod 17 is located in the cylinder body 14 , and the two are slidably connected, and an elastic member 16 is arranged between the top of the cylinder body 14 and the first puncture rod 17 . The bottom of the first puncture rod 17 and the top of the second puncture rod 22 are conical structures, the second puncture rod 22 is provided with a plurality of fixing rings 23, the second capsule body 20 is a non-woven material, and the first puncture rod 17 is arranged coaxially with the second through hole 24 , the second piercing rod 22 is arranged coaxially with the first through hole 19 , and the second through hole 24 is provided with a second sealing ring 25 . When bonding, the two third shells 12 are aligned and merged, the first puncture rod 17 passes through the second through hole 24, but its lower end does not puncture the third capsule body 21, and the second puncture rod 22 passes through the second through hole 24. A through hole 19 punctures the first capsule body 13. At this time, the two third casings 12, the first plate body 29, and the second plate body 30 can form a closed space, and the thermosetting glue passes through the first capsule body under the action of gravity. The through hole 19 enters the confined space, and after being left still and filled, move the connecting rod 18 to move the first puncture rod 17 downward to puncture the third capsule 21, so that the water can flow out, and the quicklime and water can react to release heat. Thereby heating the thermosetting adhesive. After the thermosetting adhesive is cured, the fixing ring 23 is embedded in the cured thermosetting adhesive to play an anchoring role and improve the connection strength of the two sheath segments 7 .

To sum up, in this embodiment, a steel-plastic conversion pipe with a protective sleeve is provided. The PE pipe is inserted into the installation hole 26, the steel pipe and the second shell 5 are connected by bolts, and the sheath segment 7 is bonded together. The pipe body 1, two sheath segments 7 are spliced to completely cover the outer circumference of the pipe body 1, the connecting segment 9 is fixedly connected to the pipe body 1 by bolts, when the two sheath segments 7 are spliced, the two third shells 12 Aligning and merging, the upper end of the second puncture rod 22 pierces the first capsule 13 through the first through hole 19, so that the thermosetting glue passes through the first through hole 19 and is located between the first plate body 29 and the second plate body 30, After standing still for five to ten minutes, after the space between the first plate body 29 and the second plate body 30 is completely filled with thermosetting glue, the connecting rod 18 is squeezed downward so that the lower end of the first puncture rod 17 can pierce the The third capsule 21 is broken to allow water to flow out, and the quicklime in the second capsule 20 reacts with water to release a large amount of heat, thereby heating the thermosetting glue to solidify, so that the two sheath tubes 7 are bonded together.

Example 2

This embodiment is substantially the same as Embodiment 1, except that it also includes a heat-shrinkable sheath 31. As shown in FIG. The second casing wraps, wherein the wrapping distance of the 32 ends of the PE pipe is 5cm to 10cm, and the wrapping length of the 33 ends of the steel pipe is determined according to the construction.

The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a steel plastic conversion tube with lag, its characterized in that, including body (1), the axial both ends of body (1) all are provided with first ring (2), the inboard of body (1) tip and the inboard of first ring (2) all are provided with spout (3), the axial both ends of body (1) are provided with first casing (4) and second casing (5) respectively, be provided with mounting hole (26) on first casing (4), the periphery of body (1) is provided with two semicircle arc sheath section of jurisdictions (7), the axial both ends of sheath section of jurisdiction (7) all are provided with semicircle arc connecting segment (9), and the inboard of sheath section of jurisdiction (7) is provided with semicircle arc first arch (8), is provided with the bonding portion between sheath section of jurisdiction (7);

the bonding part comprises two third shells (12), two third shells (12) are respectively arranged on two sheath segments (7), one of the third shells (12) is internally provided with a first plate body (29), a first bag body (13), an elastic component and a first puncture rod (17), the other third shell (12) is internally provided with a second plate body (30), a second bag body (20) and a third bag body (21), the second plate body (30) is provided with a second puncture rod (22), the first plate body (29) is provided with a first through hole (19), the second plate body (30) is provided with a second through hole (24), the inside of the first bag body (13) is provided with thermosetting adhesive, the inside of the second bag body (20) is provided with quicklime and activated carbon, and the inside of the third bag body (21) is provided with water.

2. A steel-plastic conversion tube with a protective sleeve according to claim 1, characterized in that the outer circumferences of the two ends of the tube body (1) in the axial direction and the outer circumference of the first annular piece (2) close to one end of the tube body (1) are both provided with annular protrusions (27), and the two annular protrusions (27) are connected through bolts.

3. A steel-plastic conversion tube with a protective sleeve according to claim 1, characterized in that the first housing (4) and the second housing (5) are of spherical structures, the mounting holes (26) are provided with a plurality of, the two sliding grooves (3) in the tube body (1) and the first annular part (2) are provided with first sealing rings (6), and the first housing (4) and the second housing (5) are in sliding contact with the sliding grooves (3) and in sliding contact with the first sealing rings (6).

4. A steel-plastic conversion tube with a protective sleeve according to claim 1, characterized in that the first protrusions (8) are provided in plurality and are arranged at equal intervals along the axial direction of the sheath segment (7), and the inner sides of the first protrusions (8) are abutted with the outer wall of the tube body (1).

5. A steel-plastic conversion tube with a protective sleeve according to claim 2, characterized in that the periphery of the end of the connecting tube piece (9) close to the sheath tube piece (7) is provided with a semicircular arc-shaped second bulge (28), and the second bulge (28) is fixedly connected with the annular bulge (27) through a bolt.

6. A steel-plastic conversion tube with a protective sleeve according to claim 1, characterized in that the inner side of the end of the connecting segment (9) far away from the sheath segment (7) is provided with a second ring-shaped element (10), and the inner side of the second ring-shaped element (10) is provided with blocking cement (11).

7. A steel plastic conversion tube with a protective sleeve according to claim 1, characterized in that the elastic component comprises a cylinder (14), a rod body (15) is arranged in the cylinder (14), the upper end of the rod body (15) extends to the outside of the cylinder (14), a connecting rod (18) is arranged at the extending end, the lower end of the rod body (15) is fixedly connected with a first puncture rod (17), the first puncture rod (17) is positioned in the cylinder (14) and is in sliding connection with the first puncture rod (17), and an elastic piece (16) is arranged between the top of the cylinder (14) and the first puncture rod (17).

8. The steel-plastic conversion tube with the protective sleeve according to claim 1, characterized in that the bottom of the first puncture rod (17) and the top of the second puncture rod (22) are both in conical structures, a plurality of fixing rings (23) are arranged on the second puncture rod (22), the second bag body (20) is made of non-woven fabric materials, the first puncture rod (17) and the second through hole (24) are coaxially arranged, the second puncture rod (22) and the first through hole (19) are coaxially arranged, and a second sealing ring (25) is arranged in the second through hole (24).

9. A steel-plastic converter tube with a protective sleeve according to any one of claims 1-8, further comprising a heat shrink sheath (31), the heat shrink sheath (31) wrapping the tube body (1), sleeve sheet (7), connecting tube sheet (9), first housing (4) and second housing (5).

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