CN212107267U - Large-caliber FRPP reinforced pipe - Google Patents

Abstract

The utility model relates to the technical field of tubular product, specifically disclose a heavy-calibre FRPP adds muscle tubular product, including the tubular product body that adopts the strip winding to form on the mould, the middle part of strip has the arch along the length direction integrated into one piece of strip, and the length direction of one side border strip of strip is seted up flutedly, and the length direction integrated into one piece of the opposite side border strip of strip has the sand grip, has the gap when sand grip and recess cooperate. The utility model discloses in, the length direction of the both sides border strip of strip is equipped with recess and sand grip respectively, after strip winding mould, under the impetus of mould, two adjacent recesses and sand grip cooperate, in the sand grip got into the recess, increased welding area for adjacent edge part's connection is more firm on the strip, has strengthened the whole bending strength of tubular product, has prolonged the life of tubular product.

Description

Large-caliber FRPP reinforced pipe

Technical Field

The utility model relates to the technical field of tubular product, specifically disclose a heavy-calibre FRPP adds muscle tubular product.

Background

The FRPP pipe is corrosion-resistant, high temperature-resistant and high pressure-resistant, has excellent impact resistance and tensile strength, and is suitable for corrosive liquid conveying (such as acid-base liquid) and municipal water supply and drainage systems. At present, the common pipe extrusion processing can only produce an FRPP drainage pipeline with the diameter of 1200mm at most, and if an FRPP pipe with a large caliber is to be produced, the investment of equipment and a mould is overlarge, so that the application of the FRPP pipe is limited. The production method of the FRPP pipe with the large caliber (larger than 1200mm) in the prior art is to wind the strip on the die, then weld the adjacent edge parts of the strip wound on the die, and form the FRPP reinforced pipe with the large caliber after cooling. However, the thickness of the two side edges of the strip is relatively thin, so that the welding area of the edge part is relatively small, the whole bending strength of the large-caliber FRPP reinforced pipe is reduced, and the service life of the large-caliber FRPP reinforced pipe is relatively short.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heavy-calibre FRPP adds muscle tubular product to the whole bending strength who solves FRPP tubular product reduces and the problem that leads to the life reduction of tubular product.

In order to achieve the above purpose, the utility model discloses a scheme does: heavy-calibre FRPP adds muscle tubular product, including the tubular product body that adopts the strip winding to form on the mould, the length direction integrated into one piece of strip is followed at the middle part of strip has the arch, and the length direction of one side border strip of strip has seted up the recess, and the length direction integrated into one piece of the opposite side border strip of strip has the sand grip, has the gap when sand grip and recess cooperate.

The working principle and the beneficial effects of the scheme are as follows: in this scheme, the length direction of the both sides border strip of strip is equipped with recess and sand grip respectively, after strip winding mould, under the pushing action of mould, two adjacent recesses and sand grip cooperate, weld in the sand grip gets into the recess again, make to form spiral welding position on the tubular product, thereby prepare out heavy-calibre FRPP and add muscle tubular product, because the cooperation of sand grip and recess, welding area has been increased, therefore the connection at adjacent edge part is more firm on the strip, the whole bending strength of tubular product has been strengthened, the service life of tubular product has been prolonged. Moreover, there is the gap between sand grip and the recess, when the welding, can follow the inboard and the outside of strip and weld the adjacent marginal part of strip simultaneously, compare in traditional unilateral welding, the welding effect of this scheme is better, and the whole bending strength of tubular product is higher.

Optionally, the two side edges of the strip are integrally formed with welding fins along the length direction of the strip.

The welding fin can greatly increase the welding area and enhance the welding strength, thereby improving the integral bending strength of the pipe.

Optionally, a concave cavity with an outward opening is formed in one side, away from the protrusion, of the welding fin.

In the welding process of the welding wing pieces, the solder flows into the concave cavities of the two adjacent welding wing pieces and fills the concave cavities, so that the welding area is increased, the connection strength of the two adjacent welding wing pieces is improved, and the integral bending strength of the pipe is further improved.

Optionally, the depth of the groove on the side edge of the strip is 1.1-1.3mm, and the width of the convex strip on the side edge of the strip is 0.8-1.0 mm.

The depth of the groove on the side edge of the strip is regulated to be 1.1-1.3mm, and the width of the convex strip on the side edge of the strip is regulated to be 0.8-1.0mm, so that the convex strip can be clamped into the groove by means of self deformation in the process of winding the strip on a die.

Optionally, the vertical cross-section of the cavity is a right triangle.

When the vertical cross-section of cavity was right triangle-shaped, two adjacent welding wing panel welding backs, two right triangle-shaped merge into a triangle-shaped, and the triangle-shaped structure is the atress stable structure to improve the bulk strength of tubular product.

Optionally, the vertical cross section of the cavity is rectangular, and the number of the cavities is multiple.

The welding fin carries out the welded in-process, and the solder flows into a plurality of cavitys of two adjacent welding fin and fills the cavity to increase welding area, improve two adjacent welding fin's joint strength, and then improve the bulk strength of tubular product, and, because the vertical cross-section of cavity is the rectangle, consequently, when tubular product received the bending force, the solder in the cavity can hinder the tubular product crooked, thereby improves the whole bending strength of tubular product.

Optionally, the thickness of the welding fin is continuously reduced from bottom to top, the welding fin is far away from one side wall of the protrusion in an inclined mode, and the distance between the top end, far away from one side wall of the protrusion, of the welding fin and the axis of the protrusion is smaller than the distance between the bottom end, far away from one side wall of the protrusion, of the welding fin and the axis of the protrusion.

The thickness of the welding wing pieces is continuously reduced from bottom to top, the gap value between every two adjacent welding wing pieces is continuously increased, and the welding flux is conveniently added, so that the welding is convenient.

Optionally, the cavity has a depth of 3-4 mm.

The difficulty of the strip extrusion process caused by the excessively deep depth of the concave cavity is avoided.

Optionally, the number of cavities is two.

The number of the concave cavities is two, so that the situation that the strip is easy to collapse due to the fact that the number of the concave cavities is too large is avoided.

Optionally, the height of the welding tab is equal to the height of the projection.

When the welding fins are equal to the height of the protrusions, the appearance of the pipe is attractive.

Drawings

FIG. 1 is a half-sectional view of a first embodiment of a large-caliber FRPP ribbed pipe of the present invention;

FIG. 2 is a schematic view of the structure of a strip according to one embodiment;

FIG. 3 is an enlarged view of A in FIG. 1;

FIG. 4 is a semi-sectional view of a second embodiment of the FRPP reinforced pipe with a large diameter of the present invention;

FIG. 5 is a schematic view of the structure of the tape according to the second embodiment;

FIG. 6 is an enlarged view of B in FIG. 4;

FIG. 7 is a half-sectional view of a third embodiment of the FRPP reinforced pipe with a large diameter of the present invention;

FIG. 8 is a schematic view of the structure of the tape according to the third embodiment;

fig. 9 is an enlarged schematic view of C in fig. 7.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the welding pipe comprises a pipe body 1, a groove 101, a convex strip 102, a protrusion 2, a welding material 3, a welding fin 4, a concave cavity 5, a first welding part 6 and a second welding part 7.

Example one

This embodiment is substantially as shown in fig. 1, 2 and 3: heavy-calibre FRPP adds muscle tubular product, including adopting the strip to twine the tubular product body 1 that forms on the mould, the middle part of strip has arch 2 along the length direction integrated into one piece of strip, and the length direction of one side border strip of strip has seted up recess 101, and the length direction integrated into one piece of the opposite side border strip of strip has sand grip 102, has the gap when sand grip 102 cooperates with recess 101.

When the large-caliber FRPP reinforced pipe in the embodiment is manufactured, in the process of winding the belt material on the die, one side of the adjacent edge part of the belt material is provided with the groove 101, the other side of the adjacent edge part of the belt material is provided with the convex strip 102, the convex strip 102 enters the groove 101 under the pushing action of the die and is welded afterwards, so that the spiral welding part is formed on the pipe body 1, the welding area is increased due to the matching of the convex strip 102 and the groove 101, and the overall bending strength of the pipe is improved. Furthermore, when the pipe is subjected to a bending force, the convex strip 102 can prevent the pipe from being bent, thereby further improving the overall bending strength of the pipe. In addition, there is the gap between sand grip 102 and the recess 101, when the welding, can weld the adjacent marginal part of strip simultaneously from the inboard and the outside of strip, and solder 3 gets into in the gap, compares in traditional unilateral welding, and the welding effect of this embodiment is better, and the bulk strength of tubular product is higher, has prolonged the life of tubular product.

Example two

The difference between the present embodiment and the first embodiment is: as shown in fig. 4, 5 and 6, the welding wing pieces 4 are integrally formed at both side edges of the strip material along the length direction of the strip material, and the height of the welding wing pieces 4 is equal to the height of the protrusions 2. One side of the welding fin 4, which is far away from the protrusion 2, is provided with a concave cavity 5 with an outward opening, and the vertical section of the concave cavity 5 is a right-angled triangle. The depth of the grooves 101 on the side edge of the strip is 1.1-1.3mm, the width of the convex strips 102 on the side edge of the strip is 0.8-1.0mm, in the embodiment, the depth of the grooves 101 on the side edge of the strip is 1.1mm, and the width of the convex strips 102 on the side edge of the strip is 0.9 mm.

In this embodiment, a process of simultaneously welding the inner side and the outer side of the strip is adopted during welding, the top end of the welding fin 4 is a first welding portion 6, and the bottom end of the welding fin 4 is a second welding portion 7 (a matching portion of the groove 101 and the convex strip 102). In the welding process, the welding flux welds the first welding part 6 and the second welding part 7 of two adjacent welding fin pieces 4, so, right triangle on two adjacent welding fin pieces 4 merges into a triangle-shaped, compares in ordinary tubular product, and the welding fin 4 department of heavy-calibre FRPP in this embodiment is more stable when atress to the bulk strength of tubular product has been improved, its life is prolonged.

EXAMPLE III

The present embodiment is different from the second embodiment in that: as shown in fig. 7, 8 and 9, the thickness of the welding wing 4 is continuously reduced from bottom to top, and a side wall of the welding wing 4 away from the protrusion 2 is obliquely arranged, and at a side wall of the welding wing 4 away from the protrusion 2, the distance between the top end of the welding wing 4 and the central axis of the protrusion 2 is smaller than the distance between the bottom end of the welding wing 4 and the central axis of the protrusion 2. The vertical section of the concave cavity 5 is rectangular, the depth of the concave cavity 5 is 3-4mm, and the number of the concave cavities 5 is multiple. In this embodiment, the depth of the cavity 5 is 3mm, and the number of the cavities 5 is two.

In this embodiment, adopt the inboard, the outside technology of welding simultaneously of strip when the welding, when two adjacent welding fin 4 welds, fused solder 3 flows into between two adjacent welding fin 4, flow into in the cavity 5 of two adjacent welding fin 4 afterwards and fill cavity 5, increased the welding area, treat that solder 3 cools off the back, solder 3 connects two adjacent welding fin 4, thereby improve two adjacent welding fin 4's joint strength, and then improve the bulk strength of the heavy-calibre FRPP reinforced pipe material in this embodiment, prolong its life. Moreover, because the solder 3 is positioned in the concave cavity 5 of two adjacent welding fins 4, when the tube material is subjected to bending force, the solder 3 can prevent the tube material from bending, thereby improving the overall bending strength of the tube material.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.

Claims (10)

1. Heavy-calibre FRPP adds muscle tubular product, including the tubular product body that adopts the strip winding to form on the mould, its characterized in that: the middle part of strip has the arch along the length direction integrated into one piece of strip, and the length direction of one side border strip of strip has seted up the recess, and the length direction integrated into one piece of the opposite side border strip of strip has the sand grip, has the gap when sand grip and recess cooperation.

2. The large-caliber FRPP reinforced pipe material of claim 1, wherein: welding fins are integrally formed on the two sides of the strip along the length direction of the strip.

3. The large-caliber FRPP reinforced pipe material of claim 2, wherein: one side of the welding wing piece, which is far away from the bulge, is provided with a concave cavity with an outward opening.

4. The large-caliber FRPP reinforced pipe material of claim 3, wherein: the depth of the groove on the side edge of the strip is 1.1-1.3mm, and the width of the convex strip on the side edge of the strip is 0.8-1.0 mm.

5. The FRPP reinforced pipe with a large caliber according to claim 3 or 4, wherein: the vertical section of the concave cavity is a right triangle.

6. The FRPP reinforced pipe with a large caliber according to claim 3 or 4, wherein: the vertical cross section of the concave cavity is rectangular, and the number of the concave cavities is multiple.

7. The large-caliber FRPP reinforced pipe material of claim 6, wherein: the thickness of welding fin reduces by supreme in succession down, and the welding fin keeps away from bellied lateral wall slope sets up, and the distance between the top that the welding fin kept away from a bellied lateral wall and the bellied axis is less than the distance between the bottom that the welding fin kept away from a bellied lateral wall and the bellied axis.

8. The large-caliber FRPP reinforced pipe material of claim 6, wherein: the depth of the concave cavity is 3-4 mm.

9. The large-caliber FRPP reinforced pipe material of claim 6, wherein: the number of the concave cavities is two.

10. The large-caliber FRPP reinforced pipe material of claim 2, wherein: the height of the welding tab is equal to the height of the projection.

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