CN201772161U

CN201772161U - Joint of braze welding pipe

Info

Publication number: CN201772161U
Application number: CN2010202641290U
Authority: CN
Inventors: 阮继成
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-20
Filing date: 2010-07-20
Publication date: 2011-03-23
Anticipated expiration: 2020-07-20

Abstract

The utility model discloses a joint of a braze welding pipe which comprises a metal pipeline body provided with a hole cavity, wherein a convex ring is arranged on the outer surface of the pipeline body. The joint is characterized in that an annular groove which is similar to the shape of V is arranged on the inner surface of the metal pipeline body and positioned on the inner wall of a pipe body which is provided with the convex ring. The joint has the advantages of being simpler in manufacturing process, being higher in production efficiency and being lower in manufacturing cost.

Description

A kind of brazed pipe joint

Technical field

The utility model belongs to the pipe joint structure design field, is specifically related to a kind of brazed pipe joint.

Background technique

Present stainless steel or copper pipe joint, especially outside are provided with bulge loop, generally all be to adopt first founding casting, back turning moulding to make, and its processing time consuming effort, manufacturing efficiency is low, and cost is high.

The model utility content

The purpose of this utility model provides a kind of brazed pipe joint that adopts the impact briquetting mode to make.

The technological scheme that realizes first purpose of the utility model is: a kind of brazed pipe joint, comprise the metallic conduit body that is provided with vestibule, described pipeline body outer surface is provided with bulge loop, the internal surface of described metallic conduit body is provided with the annular recess of approximate " V " font, and described annular recess is positioned on the inwall of described bulge loop place body.

In the said method, described metallic conduit body is stainless steel, Ordinary Steel matter or copper; The stepped ramp type vestibule that described vestibule is made up of big porose area and aperture district, its inlet is the bigger big porose area in aperture, its outlet port is the less little porose area in aperture; Described annular recess is positioned on the internal surface of described little porose area.

In the said method, the vestibule of described bulge loop place body is positioned at little porose area.

In the said method, described annular recess be described pipeline body be positioned at annular recess up and down the tube wall of both sides be subjected to the punching press distortion and form.

In the said method, the sectional shape of two limit walls of described annular recess is straight line shape or arc shaped.

The utlity model has positive effect: in (1) the utility model product, the internal surface of described little porose area is provided with the annular recess of approximate " V " font, and described annular recess is positioned on the inwall of described bulge loop place body.The brazed pipe joint of this kind structure can be made by the impact briquetting mode, described annular recess be since be positioned at annular recess up and down the tube wall of both sides be subjected to that punching press distortion back bending is folded mutually to be formed, so its manufacture method is compared with traditional product, very simplify, have the advantage that manufacturing process is comparatively simplified, manufacturing efficiency is higher, manufacture cost is lower.

Description of drawings

Fig. 1 is a kind of half sectional view of first kind of structure of the utility model product;

Fig. 2 is the local enlarged diagram at A place in the brazed pipe joint shown in Figure 1;

Fig. 3 is a kind of half sectional view of second kind of structure of the utility model product;

Fig. 4 is the local enlarged diagram at B place in the brazed pipe joint shown in Figure 3;

Fig. 5 is for adopting the process schematic representation of punch die stamped metal blank pipe manufacturer pipe shown in Figure 2;

Fig. 6 makes the half sectional view of pipe for technology shown in Figure 5;

Fig. 7 is for adopting the process schematic representation of pipe joint shown in the hole enlargement punch die punching press pipe working drawing 4;

Fig. 8 makes the half sectional view of pipe joint for technology shown in Figure 7;

Be labeled as shown in the accompanying drawing: pipeline body 1, vestibule 2, big porose area 21, aperture district 22, bulge loop 3, annular recess 4, limit wall 41, blank pipe 51, pipe 52, bed die 6, a left side half bed die 6A, right half bed die 6B, die cavity 61, tubular cavity 611, inner concave shape groove 612, punch die 7, drift 71, pressing plate 72, hole enlargement bed die 8, left half hole enlargement bed die 8A, right half hole enlargement bed die 8B, hole enlargement die cavity 81, location die cavity 82, bulge loop location type groove 83, hole enlargement punch die 9, tubulose aligning punch 91, hole enlargement drift 92, pressing plate 93.

Embodiment

(embodiment 1, brazed pipe joint)

Fig. 1 and Fig. 2 have shown first kind of embodiment of the utility model product, and wherein Fig. 1 is a kind of half sectional view of first kind of structure of the utility model product; Fig. 2 is the local enlarged diagram at A place in the brazed pipe joint shown in Figure 1.

Present embodiment is a kind of stainless steel brazed pipe joint, see Fig. 1, comprise the metallic conduit body 1 that is provided with vestibule 2, described pipeline body 1 outer surface is provided with bulge loop 3, the internal surface of described metallic conduit body 1 is provided with the annular recess 4 of approximate " V " font, and described annular recess 4 is positioned on the inwall of described bulge loop 3 place bodys.

See Fig. 2, described annular recess 4 is that tube wall that described pipeline body 1 is positioned at annular recess both sides about in the of 4 is subjected to the punching press distortion and forms.The sectional shape of two limit walls 41 of described annular recess 4 is straight line shapies.

(embodiment 2, brazed pipe joint)

Fig. 3 and Fig. 4 have shown second kind of embodiment of the utility model product, and wherein Fig. 3 is a kind of half sectional view of second kind of structure of the utility model product; Fig. 4 is the local enlarged diagram at B place in the brazed pipe joint shown in Figure 3.

Present embodiment is substantially the same manner as Example 1, and difference is: the stepped ramp type vestibule 2 that described vestibule 2 is made up of big porose area 21 and aperture district 22, and its inlet is the bigger big porose area 21 in aperture, its outlet port is less aperture district 22, aperture; Described annular recess 4 is positioned on the internal surface in described aperture district 22.The vestibule 2 of described bulge loop 3 place bodys is positioned at aperture district 22.The sectional shape of two limit walls 41 of described annular recess 4 is arc shapeds.

The used material of present embodiment pipe joint is a stainless steel, in concrete practice, can select for use other metal material such as copper, Ordinary Steel matter to make as required.

Among the foregoing description 1 and the embodiment 2, the internal surface in described aperture district 22 is provided with the annular recess 4 of approximate " V " font, and described annular recess 4 is positioned on the inwall of described bulge loop 3 place bodys.The brazed pipe joint of this kind structure can be made by the impact briquetting mode, described annular recess be since be positioned at annular recess up and down the tube wall of both sides be subjected to that punching press distortion back bending is folded mutually to be formed, so its manufacture method is compared with traditional product, very simplify.

(Production Example 1)

Fig. 5 and Fig. 6 have shown the concrete manufacture of embodiment's 1 described brazed pipe joint, and wherein Fig. 5 is for adopting the process schematic representation of punch die stamped metal blank pipe manufacturer pipe shown in Figure 2; Fig. 6 makes the half sectional view of pipe for technology shown in Figure 5.

This Production Example is the manufacture method of embodiment's 1 described brazed pipe joint, may further comprise the steps:

1. get stainless steel blank pipe 51 ready;

2. in bed die 6 with punch die 7 punching press blank pipes 51, make the part body distortion of blank pipe 51 and rise outward, forms outer wall and have the pipe 52 that bulge loop 3, inwall have V font annular recess 4, and described annular recess 4 is positioned on the inwall of described bulge loop 3 place bodys; With the finished product that obtains directly as pipe joint.

Step 2. in, described metal blank pipe 51 is stainless steel, Ordinary Steel matter or copper; Described bed die 6 is put together by a left side half bed die 6A and right half bed die 6B, and the die cavity 61 of described bed die 6 comprises tubular cavity 611 and ring-type inner concave shape groove 612.Described punch die 7 comprises drift 71 and pressing plate 72 from the bottom up successively; Described drift 71 external diameters equal described blank pipe 51 internal diameters; The height H 1 of described blank pipe 51 is greater than the degree of depth h1 of described bed die 6 die cavities 61.

During the downward punching press of described punch die 7, described drift 71 at first inserts in the vestibule of blank pipe 51, pressing plate 72 in the described then punch die 7 is pushed down the top end face of blank pipe 51 and blank pipe 51 at first is pressed against on the diapire of bed die 6 die cavities 61, continuation punching press along with described pressing plate 72, outer the rising of the part outer wall of described blank pipe 51 distortion and enter into the ring-type inner concave shape groove 612 of bed die 6, and then on the outer wall of blank pipe 51, form described bulge loop 3 and on inwall, form the V font groove.

(Production Example 2)

Fig. 7 and Fig. 8 have shown the concrete manufacture of embodiment's 2 described brazed pipe joints, and wherein, Fig. 7 is for adopting the process schematic representation of pipe joint shown in the hole enlargement punch die punching press pipe working drawing 4; Fig. 8 makes the half sectional view of pipe joint for technology shown in Figure 7.

This Production Example is the manufacture method of embodiment's 2 described brazed pipe joints, its method and Production Example 1 are basic identical, difference is: after carrying out above-mentioned steps operation 2., also the pipe 52 that obtains is carried out reprocessing: the finished product that obtains is transferred in the hole enlargement bed die 8, the internal diameter of its upper end vestibule is enlarged with the described finished product of hole enlargement punch die 9 punching presses.

Described hole enlargement bed die 8 is put together by a left side half hole enlargement bed die 8A and right half hole enlargement bed die 8B, and described hole enlargement bed die 8 die cavities edge direction from the top down is provided with hole enlargement die cavity 81, tubulose location die cavity 82 and the bulge loop location type groove 83 that is used for hole enlargement successively; The aperture d2 of described hole enlargement die cavity 81 is greater than the aperture d1 of tubulose location die cavity 82; Described hole enlargement punch die 9 edges direction from bottom to top are provided with external diameter less tubulose aligning punch 91, external diameter bigger hole enlargement drift 92 and pressing plate 93 successively; The outer diameter D 2 of described tubulose aligning punch 91 equals the inner diameter d 1 of tubulose location die cavity 82 in the hole enlargement bed die 8, and the outer diameter D 1 of described hole enlargement drift 92 equals the inner diameter d 2 of hole enlargement die cavity 81 in the hole enlargement bed die 8.

Among the above-mentioned Production Example 1-2, can directly adopt common stainless steel pipe or copper pipe or other metal tube impact briquetting, need not to adopt casting ingot, so greatly reduce the cost; In addition, adopt the impact briquetting mode to have higher production efficiency and yield rate, compare, have the cost advantage that to compare with adopting the turning processing mode.So, the utlity model has the advantage that manufacturing process is comparatively simplified, manufacturing efficiency is higher, manufacture cost is lower.

Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And these belong to conspicuous variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.

Claims

1. brazed pipe joint, comprise the metallic conduit body (1) that is provided with vestibule (2), described pipeline body (1) outer surface is provided with bulge loop (3), it is characterized in that: the internal surface of described metallic conduit body (1) is provided with the annular recess (4) of approximate " V " font, and described annular recess (4) is positioned on the inwall of described bulge loop (3) place body.

2. brazed pipe joint according to claim 1 is characterized in that: described metallic conduit body (1) is stainless steel, Ordinary Steel matter or copper; The stepped ramp type vestibule (2) that described vestibule (2) is made up of big porose area (21) and little porose area (22), its inlet is the bigger big porose area (21) in aperture, its outlet port is the less little porose area (22) in aperture; Described annular recess (4) is positioned on the internal surface of described little porose area (22).

3. brazed pipe joint according to claim 2 is characterized in that: the vestibule (2) of described bulge loop (3) place body is positioned at little porose area (22).

4. brazed pipe joint according to claim 1 is characterized in that: described annular recess (4) be described pipeline body (1) be positioned at annular recess (4) up and down the tube wall of both sides be subjected to punching press distortion and form.