RTP pipe

Abstract

The utility model relates to an RTP pipe which comprises a base pipe and a conical casing pipe, and the outer diameter and the inner diameter of the end of the base pipe are gradually increased in the direction away from the base pipe. The conical sleeve wraps the outer wall, the inner wall and the end face of the end of the base pipe, and the inner diameter of the conical sleeve is equal to the inner diameter of the non-end portion of the base pipe. The conical sleeve wraps the outer wall, the inner wall and the end face of the end of the base pipe, the connecting area is greatly increased, the connecting force between the base pipe and the conical sleeve is enhanced, the base pipe and the conical sleeve are connected more stably, meanwhile, the inner diameter of the conical sleeve is equal to the inner diameter of the non-end portion of the base pipe, and it can be effectively guaranteed that the drift diameter of the pipe meets the requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe material technical field especially, it relates to a RTP pipe material. BACKGROUND

[0002] At present, RTP pipe mostly adopts flange to connect, specifically, first process straight pipe part of RTP pipe, process taper sleeve structure in the end of RTP pipe through injection molding etc.

[0003] As shown in Figure 1 The existing RTP pipe includes straight pipe and taper sleeve, first process straight pipe part of RTP pipe, install special mold in the end position of RTP pipe, form a taper cavity between mold and RTP pipe, at this time, can form above-mentioned taper sleeve through injection molding process.

[0004] However, in the process of twice processing forming taper sleeve, straight pipe only end face and outer wall contact with taper sleeve, contact area is small, and connection firmness is low. INNOVATION CONTENT

[0005] Therefore, it is necessary to provide a RTP pipe material to solve the problem that in the process of twice processing forming taper sleeve, straight pipe only end face and outer wall contact with taper sleeve, contact area is small, and connection firmness is low.

[0006] The utility model provides a RTP pipe material, including base pipe and taper sleeve, the outer diameter and inner diameter of the end of base pipe are gradually expanded along the direction away from the base pipe, the taper sleeve is arranged on the outer wall, inner wall and end face of the end of base pipe, and the inner diameter of the taper sleeve is equal to the inner diameter of the part of the base pipe except the end.

[0007] Further, the taper sleeve includes a first connecting ring, a second connecting ring and a third connecting ring, the first connecting ring abuts against the outer wall of the end of the base pipe, the second connecting ring abuts against the inner wall of the end of the base pipe, the third connecting ring abuts against the end face of the end of the base pipe, the first connecting ring and the second connecting ring are connected through the third connecting ring, and the inner diameters of the second connecting ring and the third connecting ring are equal to the inner diameter of the part of the base pipe except the end.

[0008] Further, the first connecting ring, the second connecting ring and the third connecting ring are integrally formed by injection molding.

[0009] Further, one part of the taper sleeve wraps the end of the base pipe, and the other part of the taper sleeve wraps the part of the base pipe except the end.

[0010] Further, the first connecting ring comprises a first connecting part and a second connecting part connected in sequence, the inner wall of the first connecting part is connected with the part of the non-end part of the base pipe, the inner wall of the second connecting part is connected with the outer wall of the end part of the base pipe, and the outer walls of the first connecting part and the second connecting part form a tapered surface gradually expanding in the direction close to the third connecting ring.

[0011] Further, the third connecting ring is a circular ring.

[0012] Further, the thickness of the third connecting ring is not greater than the maximum thickness of the first connecting ring.

[0013] Further, the side of the third connecting ring away from the base pipe is a plane.

[0014] Further, the side of the third connecting ring away from the base pipe is provided with an annular groove.

[0015] Further, the side of the third connecting ring away from the base pipe is formed with an annular protrusion.

[0016] Compared with the prior art, the tapered sleeve covers the outer wall, the inner wall and the end face of the end part of the base pipe, the connecting area is greatly increased, the connecting force between the base pipe and the tapered sleeve is enhanced, and the connection between the two is more stable, and meanwhile, the inner diameter of the tapered sleeve is equal to the inner diameter of the part of the non-end part of the base pipe, so that the size of the pipe diameter can meet the requirements. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic structural view of the prior RTP pipe;

[0018] Figure 2 is a schematic structural view of the whole in the RTP pipe provided by the embodiment of the present application. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present application will be specifically described below with reference to the drawings, wherein the drawings constitute a part of the present application, and are used to illustrate the principles of the present application together with the embodiments of the present application, and are not used to limit the scope of the present application.

[0020] First of all, it needs to be pointed out that, in order to connect the RTP pipes, the current method is to form a tapered sleeve on the end part of the RTP pipe by injection molding, and then the connection between two RTP pipes can be realized by the cooperation and connection of the clamps and the tapered sleeve.

[0021] The current manufacturing process of the RTP pipe is as follows Figure 1As shown in the figure, a straight pipe M1 is produced, and a mold is installed at the end of the straight pipe M1, wherein the mold comprises an upper mold M3 and a lower mold M4, the upper mold M3 and the lower mold M4 are detachably connected, a tapered cavity covering the end of the straight pipe M1 is formed between the upper mold M3 and the lower mold M4, the injection material can be introduced through the injection hole opened on the mold, and after the injection material solidifies, the upper mold M3 and the lower mold M4 are demolded, thereby forming a tapered sleeve M2 comprising the end of the straight pipe M1. Wherein, the tapered sleeve M2 is only connected with the outer wall and the end face of the end of the straight pipe M1, the contact area is small, and the connection stability is low. Therefore, the embodiment of the utility model provides an RTP pipe to solve the above problems.

[0022] As Figure 2 shown, the embodiment of the utility model provides an RTP pipe, which comprises a base pipe 100 and a tapered sleeve 200, the outer diameter and the inner diameter of the end 110 of the base pipe 100 are gradually expanded in the direction away from the base pipe 100; the tapered sleeve 200 covers the outer wall 111, the inner wall 112 and the end face 113 of the end 110 of the base pipe 100, and the inner diameter of the tapered sleeve 200 is equal to the inner diameter of the part other than the end 110 of the base pipe 100.

[0023] Wherein, the tapered sleeve 200 covers the outer wall 111, the inner wall 112 and the end face 113 of the end 110 of the base pipe 100, the connection area is greatly increased, the connection force between the base pipe 100 and the tapered sleeve 200 is enhanced, the connection between the two is more stable, and meanwhile, the inner diameter of the tapered sleeve 200 is equal to the inner diameter of the part other than the end 110 of the base pipe 100, which can effectively ensure that the size of the pipe diameter meets the requirements.

[0024] For the convenience of understanding, the tapered sleeve 200 in the embodiment comprises a first connecting ring 210, a second connecting ring 220 and a third connecting ring 230, the first connecting ring 210 abuts against the outer wall 111 of the end 110 of the base pipe 100, the second connecting ring 220 abuts against the inner wall 112 of the end 110 of the base pipe 100, the third connecting ring 230 abuts against the end face 113 of the end 110 of the base pipe 100, the first connecting ring 210 and the second connecting ring 220 are connected via the third connecting ring 230, and the inner diameters of the second connecting ring 220 and the third connecting ring 230 are equal to the inner diameter of the part other than the end 110 of the base pipe 100.

[0025] It can be understood that the first connecting ring 210, the second connecting ring 220 and the third connecting ring 230 are integrally formed by injection molding. The integrally injection molding can be realized through the special mold as Figure 1 shown in the figure.

[0026] In one embodiment, the tapered sleeve 200 only wraps the end portion 110 of the base pipe 100. In order to further improve the connection strength between the base pipe 100 and the tapered sleeve 200, in another embodiment, the tapered sleeve 200 wraps a part of the end portion 110 of the base pipe 100, and another part of the tapered sleeve 200 wraps a part of the non-end portion 110 of the base pipe 100.

[0027] In one embodiment, the first connecting ring 210 includes a first connecting portion and a second connecting portion connected in sequence, the inner wall of the first connecting portion is connected with the part of the non-end portion 110 of the base pipe 100, the inner wall of the second connecting portion is connected with the outer wall 111 of the end portion 110 of the base pipe 100, and the outer walls of the first connecting portion and the second connecting portion form a tapered surface gradually expanding in the direction close to the third connecting ring 230.

[0028] In one embodiment, the third connecting ring 230 is a circular ring.

[0029] In one embodiment, the thickness of the third connecting ring 230 is not greater than the maximum thickness of the first connecting ring 210. In order to facilitate the cooling rate of the third connecting ring 230 and the cooling rate of the first connecting portion to be not much different, the dimensional accuracy after demolding is high.

[0030] In one embodiment, the side of the third connecting ring 230 away from the base pipe 100 is a plane, so as to facilitate the butt joint of two RTP pipes.

[0031] In another embodiment, the side of the third connecting ring 230 away from the base pipe 100 is provided with an annular groove, so as to facilitate the placement of a sealing ring in the annular groove during the butt joint of two RTP pipes, thereby realizing the sealing function between the two RTP pipes.

[0032] In yet another embodiment, the side of the third connecting ring 230 away from the base pipe 100 is formed with an annular protrusion, and the annular protrusions on the two RTP pipes abut against each other during the butt joint, thereby realizing the sealing function between the two RTP pipes.

[0033] Compared with the prior art, the tapered sleeve 200 described above covers the outer wall 111, the inner wall 112 and the end face 113 of the end portion 110 of the base pipe 100, the connection area is greatly increased, the connection force between the base pipe 100 and the tapered sleeve 200 is enhanced, the connection of the two is more stable, and at the same time, the inner diameter of the tapered sleeve 200 is equal to the inner diameter of the part of the non-end portion 110 of the base pipe 100, which can effectively ensure that the pipe size meets the requirements.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An RTP pipe, characterized in that, The base pipe and the conical sleeve: The outer diameter and the inner diameter of the end of the base pipe are gradually expanded in the direction away from the base pipe; The conical sleeve covers the outer wall, the inner wall and the end surface of the end of the base pipe, and the inner diameter of the conical sleeve is equal to the inner diameter of the non-end part of the base pipe.

2. The RTP tube of claim 1, wherein, The conical sleeve comprises a first connecting ring, a second connecting ring and a third connecting ring, the first connecting ring abuts against the outer wall of the end of the base pipe, the second connecting ring abuts against the inner wall of the end of the base pipe, and the third connecting ring abuts against the end surface of the end of the base pipe, the first connecting ring and the second connecting ring are connected via the third connecting ring, and the inner diameters of the second connecting ring and the third connecting ring are equal to the inner diameter of the non-end part of the base pipe.

3. The RTP tube of claim 2, wherein, The first connecting ring, the second connecting ring and the third connecting ring are integrally formed by injection molding.

4. The RTP tube of claim 2, wherein, A part of the conical sleeve wraps the end of the base pipe, and the other part of the conical sleeve wraps the non-end part of the base pipe.

5. The RTP tube of claim 4, wherein, The first connecting ring comprises a first connecting part and a second connecting part connected in sequence, the inner wall of the first connecting part is connected with the non-end part of the base pipe, the inner wall of the second connecting part is connected with the outer wall of the end of the base pipe, and the outer walls of the first connecting part and the second connecting part form a conical surface gradually expanding in the direction close to the third connecting ring.

6. The RTP tube of claim 2, wherein, The third connecting ring is a circular ring.

7. The RTP tube of claim 2, wherein, The thickness of the third connecting ring is not greater than the maximum thickness of the first connecting ring.

8. The RTP tube of claim 2, wherein, The side of the third connecting ring away from the base pipe is a plane.

9. The RTP tube of claim 2, wherein, The side of the third connecting ring away from the base pipe is provided with an annular groove.

10. The RTP tube of claim 2, wherein, The side of the third connecting ring away from the base pipe is provided with an annular protrusion.

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