CN203202450U - Connecting pipe - Google Patents
Connecting pipe Download PDFInfo
- Publication number
- CN203202450U CN203202450U CN 201320112395 CN201320112395U CN203202450U CN 203202450 U CN203202450 U CN 203202450U CN 201320112395 CN201320112395 CN 201320112395 CN 201320112395 U CN201320112395 U CN 201320112395U CN 203202450 U CN203202450 U CN 203202450U
- Authority
- CN
- China
- Prior art keywords
- overcoat
- connecting tube
- opening portion
- interior cover
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a connecting pipe, and belongs to the technical field of connecting pipe fittings. The connecting pipe comprises an outer sleeve and an inner sleeve, wherein the inner sleeve is sleeved in the outer sleeve in a clearance fit mode, a protrusion is arranged on the outer wall at the lower end of the inner sleeve, the gap between the inner sleeve and the outer sleeve is 0.01-0.15mm, the outer sleeve is formed by a notch, a bearing portion and an opening portion, the bearing portion is in circular arc transition to the opening portion, and the opening portion is trumpet-shaped. The connecting pipe serves as one of the connecting conveying pipe fittings, and can be widely used in air conditioners and other devices.
Description
Technical field
The utility model relates to a kind of connecting tube, belongs to the connection pipe fitting technical field.
Background technique
Connecting tube is as connect carrying a kind of in the pipe fitting, is widely used in the equipment such as air-conditioning.Existing connecting tube assembly needed to carry out the combination of different pipe fittings before using, its connection or mounting type mainly adopt the mode of interference or close-fitting to install, add solder then welds in the joint, this mode has improved the sealing of installing under perfect condition, but the superfluous accumulation of solder easily takes place in the joint, solder distributes problems such as irregular, surface quality after the welding is relatively poor, if solder is deposited on the inner-walls of duct, easily cause the turbulent phenomenon of air-flow in the connecting tube, be unfavorable for the smooth discharge of gas; If solder is deposited in pipeline outer wall, in transportation and the using process, easily to swipe, brazing filler metal on surface easily is touched down, and is unfavorable for the tightness guarantee of joint.Simultaneously, because what adopt is that the mode of interference or close-fitting is installed, because the pipe fitting that adopts is metal material, need between the pipe fitting could realize installing by extruding, in the extruding installation process, cause not breaking or breakage of pipeline easily, easily cause the hidden danger of tightness problem.
Have based on this, make the utility model.
The model utility content
For solving the problems of the technologies described above, the utility model provides a kind of tightness good, easy for installation connecting tube assembly.
For achieving the above object, the technological scheme taked of the utility model is as follows:
Connecting tube comprises overcoat and interior cover, and interior cover is sleeved in the overcoat by Spielpassung, and interior cover lower end outer wall is provided with projection, and the gap between interior cover and the overcoat is 0.01-0.15mm.
For realizing better using effect, further arranging of technique scheme is as follows:
Described overcoat is made up of notch, carrier and opening portion three parts, and the carrier arc transition is to opening portion, and opening portion is horn-like.
Described projection evenly arranges 2-15 along interior cover circumference, and height of projection is 0.01-0.15mm.
Described overcoat is the steel bushing overcoat, and interior cover is cover in the copper pipe.
Working principle and the beneficial effect of the utility model connecting tube are as follows:
Connecting tube assembly of the present utility model has comprised cover two-part structure in steel bushing overcoat and the copper pipe, install by Spielpassung between the two, and adopt high-temperature copper-based solder to weld, by the structure setting of cover in the copper pipe with the steel bushing overcoat, make it to realize the Spielpassung installation, in welding process, after melting, solder directly falls between the gap of the interior cover of copper pipe and steel bushing overcoat, the outer wall of cover bottom is provided with projection in the copper pipe, projection both can play positioning action to cover in the copper pipe, make and overlap the specified position that is installed in the steel bushing overcoat in the copper pipe, guarantee that welding is proper, do not have deflection between overlapping in steel bushing overcoat and the copper pipe, make things convenient for using and installing of connecting tube, simultaneously, the setting of projection make again solder in steel bushing overcoat and copper pipe, overlap between evenly distribution, guaranteed the tightness of connecting tube, testing result shows: the penetration length of solder is not less than 4mm, logical 3MPa pressurized air did not all have leakage in 3 minutes in the connecting tube of the present utility model, can satisfy chiller plant such as air-conditioning to the requirement of exhaust connection part.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model connecting tube assembly;
Fig. 2 is the size marking figure of Fig. 1;
Fig. 3 is cross-sectional view and the size marking figure of overcoat among Fig. 1;
Fig. 4 is cross-sectional view and the size marking figure of interior cover among Fig. 1.
Number in the figure: 1, interior cover; 11, body; 12, projection; 2, overcoat; 21, notch; 211, sharp limit chamfering; 22, carrier; 23, opening portion.
Embodiment
The utility model connecting tube, in conjunction with Fig. 1, cover 1 and overcoat 2 in comprising, in cover 1 be sleeved in the overcoat 2 by Spielpassung, interior cover 1 lower end outer wall is provided with projection 12, evenly is provided with 10 projectioies 12 along interior cover 1 circumference, and the gap between interior cover 1 and the overcoat 2 is 0.01-0.15mm; Overcoat 2 is made up of notch 21, carrier 22 and opening portion 23 3 parts, and carrier 22 arc transition are to opening portion 23, and opening portion 23 is horn-like.Wherein, overcoat 1 is the steel bushing overcoat, and interior cover 2 is cover in the copper pipe.
In the present embodiment, in conjunction with Fig. 2, Fig. 3 and Fig. 4, the size of connecting tube is as follows:
The total height L of interior cover 1
BBe 10 ± 0.2mm, inner diameter D
B1Be 16 ± 0.1mm, D outer diameter
B2Be 17.95-18mm; Projection 12 central positions are far from the distance L of lower end surface
3Be 2.5mm, protruding 12 width d are 0.8mm, highly are 0.01-0.15mm.
Overcoat 2 total height L
ABe 14.5 ± 0.1mm, wherein, notch 21 offers sharp limit chamfering 211, notch 21 height L
A1Be 4.2-4.3mm, inner diameter D
A11Be 18.04-18.06mm, D outer diameter
A12Be 20 ± 0.1mm, sharp limit chamfering 211 is C0.5; The wall thickness b of carrier 22 and opening portion 23 is 1.5mm, wherein, and the inner diameter D of carrier 22
A2Be 17mm, the height L of opening portion 23
A3Be 3 ± 0.1mm, for circular arc is connected, radius of arc R is 0.3mm between carrier 22 and the opening portion 23, and the bell mouth angle θ of opening portion 23 is 45 ± 1 °.
In the connecting tube overall structure, the height L of whole connecting tube assembly
C1Be 20.5 ± 0.3mm, wherein, the distance L between the upper-end surface of the upper-end surface of interior cover 1 and overcoat 2
C2Be 6 ± 0.1mm.
Adopt the connecting tube of present embodiment, by cover 1 and steel bushing overcoat 2 Spielpassung between the two in the copper pipe, and adopt high-temperature copper-based solder to weld, the realization Spielpassung is installed, in welding process, after melting, solder directly falls between the gap of the interior cover 1 of copper pipe and steel bushing overcoat 2, the outer wall of cover 1 bottom is provided with projection 12 in the copper pipe, projection 12 both can play positioning action to cover 1 in the copper pipe, make the interior cover 1 of copper pipe be installed in the specified position of steel bushing overcoat 2, guarantee that welding is proper, do not have deflection between the cover 1 in steel bushing overcoat 2 and the copper pipe, make things convenient for using and installing of connecting tube, simultaneously, projection 12 setting make again solder in steel bushing overcoat 2 and copper pipe, overlap 1 between evenly distribution, guaranteed the tightness of connecting tube, testing result shows: the penetration length of solder is not less than 4mm, leads to 3MPa pressurized air in connecting tube assembly of the present utility model, all do not have leakage in 3 minutes, can satisfy chiller plants such as air-conditioning to the requirement of exhaust connection part.
Present embodiment is identical with embodiment 1 setting and working principle, and difference is: the total height L of interior cover 1
BBe 12 ± 0.1mm, inner diameter D
B1Be 14.15-14.3mm, D outer diameter
B2Be 16.25-16.3mm; Projection 12 both sides place, end diameter of a circle D
B3Be 16.38-16.45mm.
Overcoat 2 total height L
ABe 13 ± 0.1mm, wherein, notch 21 height L
A1Be 4.6-4.9mm, inner diameter D
A11Be 16.34-16.36mm, D outer diameter
A12Be 18-18.2mm; The wall thickness b of carrier 22 and opening portion 23 is 1.5 ± 0.1mm; For circular arc is connected, radius of arc R is 1mm between carrier 22 and the opening portion 23, and the bell mouth angle θ of opening portion 23 is 45 ± 2 °.
In the connecting tube overall structure, the height L of whole connecting tube assembly
C1Be 20.6-20.75mm.
Embodiment 3
Present embodiment is identical with embodiment 1 setting and working principle, and difference is: the total height L of interior cover 1
BBe 12 ± 0.1mm, inner diameter D
B1Be 16.8-16.95mm, D outer diameter
B2Be 19.02-19.07mm; Projection 12 both sides place, end diameter of a circle D
B3Be 19.17-17.2mm.
Overcoat 2 total height L
ABe 14.7 ± 0.1mm, wherein, notch 21 height L
A1Be 5.45-5.7mm, inner diameter D
A11Be 19.11-19.13mm, D outer diameter
A12Be 20.5-20.7mm; The wall thickness b of carrier 22 and opening portion 23 is 1.5 ± 0.1mm; For circular arc is connected, radius of arc R is 1mm between carrier 22 and the opening portion 23, and the bell mouth angle θ of opening portion 23 is 45 ± 2 °.
In the connecting tube overall structure, the height L of whole connecting tube assembly
C1Be 21.4-21.55mm.
Claims (4)
1. connecting tube, it is characterized in that: comprise overcoat and interior cover, interior cover is sleeved in the overcoat by Spielpassung, and interior cover lower end outer wall is provided with projection, and the gap between interior cover and the overcoat is 0.01-0.15mm.
2. connecting tube according to claim 1, it is characterized in that: described overcoat is made up of notch, carrier and opening portion three parts, and the carrier arc transition is to opening portion, and opening portion is horn-like.
3. connecting tube according to claim 1 and 2 is characterized in that: described projection evenly arranges 2-15 along interior cover circumference, and height of projection is 0.01-0.15mm.
4. connecting tube according to claim 1 and 2, it is characterized in that: described overcoat is the steel bushing overcoat, interior cover is cover in the copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320112395 CN203202450U (en) | 2013-03-12 | 2013-03-12 | Connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320112395 CN203202450U (en) | 2013-03-12 | 2013-03-12 | Connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203202450U true CN203202450U (en) | 2013-09-18 |
Family
ID=49146558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320112395 Expired - Fee Related CN203202450U (en) | 2013-03-12 | 2013-03-12 | Connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203202450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403212A (en) * | 2016-08-31 | 2017-02-15 | 新昌县开铭制冷配件有限公司 | Connecting pipe for refrigeration pipes of air conditioner |
-
2013
- 2013-03-12 CN CN 201320112395 patent/CN203202450U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403212A (en) * | 2016-08-31 | 2017-02-15 | 新昌县开铭制冷配件有限公司 | Connecting pipe for refrigeration pipes of air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20170312 |