CN203202451U

CN203202451U - Combination exhaust pipe

Info

Publication number: CN203202451U
Application number: CN 201320112722
Authority: CN
Inventors: 王志祥
Original assignee: SHENGZHOU ZHIYUAN WELDING PRODUCTS CO Ltd
Current assignee: SHENGZHOU ZHIYUAN WELDING PRODUCTS CO Ltd
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2013-09-18
Anticipated expiration: 2023-03-12

Abstract

The utility model discloses a combination exhaust pipe, and belongs to the technical field of exhaust pipes. The combination exhaust pipe comprises a copper pipe and a steel base, wherein the steel base is sleeved on the copper pipe in a clearance fit mode, protruded points are arranged on the outward sides of copper pipe, and the gap between the steel base and the copper pipe is 0.01-0.15mm. A large-diameter part, a small-diameter part and a connection part between the large-diameter part and the small-diameter part constitute the copper pipe, and the protruded points are arranged on the small-diameter part. The steel base sequentially comprises a base end, a base bottom and a base surface which is connected with the base end and the base bottom in a smooth transition mode. The combination exhaust pipe serves as one of connection conveying pipe fittings, has the advantages of being good in seal performance, convenient to install and the like, and can be widely applied to air conditioners and other equipment.

Description

The combined type outlet pipe

Technical field

The utility model relates to a kind of combined type outlet pipe, belongs to exhaust pipe fitting technical field.

Background technique

Outlet pipe is as connect carrying a kind of in the pipe fitting, is widely used in the equipment such as air-conditioning.Existing outlet pipe needed to carry out the combination of different exhaust 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 outlet pipe, 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 combined type outlet pipe.

For achieving the above object, the technological scheme taked of the utility model is as follows:

The combined type outlet pipe comprises copper pipe and steel seat, and the steel seat is sleeved on the copper pipe by Spielpassung, and copper pipe is equipped with salient point laterally, and the gap is 0.01-0.15mm between steel seat and the copper pipe.

For realizing better using effect, further arranging of technique scheme is as follows:

Described copper pipe is made up of large-diameter portion, minor diameter part and joint between the two, and salient point is arranged on minor diameter part.

Described steel seat comprises seat end, the seat end successively, and be connected smoothly seat end and the seat surface at the seat end.

Wherein, described salient point is formed to outer wall is outstanding by the copper pipe inwall, perhaps, is outwards given prominence to form by the copper pipe outer wall.

Working principle and the beneficial effect of the utility model outlet pipe are as follows:

Combined type outlet pipe of the present utility model, copper pipe and steel seat two-part structure have been comprised, install by Spielpassung between the two, and adopt high temperature copper solder to weld, structure setting by copper pipe and steel seat, make it to realize the Spielpassung installation, in welding process, solder directly falls between the gap of copper pipe and steel seat after melting, copper pipe is provided with salient point, on the one hand the steel seat is played positioning action, makes the steel seat be installed in the specified position of copper pipe, guarantee that welding is proper, do not have deflection between copper pipe and the steel seat, the gap is even, the using and installing of easy to exhaust pipe, on the other hand, the setting of salient point evenly distributes solder between copper pipe and steel seat, guaranteed the tightness of outlet pipe, and testing result shows: lead to 3MPa pressurized air in outlet pipe 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.

Description of drawings

Fig. 1 is cross-sectional view of the present utility model;

Fig. 2 is a kind of cross-sectional view of copper pipe among Fig. 1;

Fig. 3 is a kind of cross-sectional view of steel seat among Fig. 1;

Fig. 4 is the another kind of cross-sectional view of copper pipe;

Fig. 5 is the another kind of cross-sectional view of steel seat;

Fig. 6 is the structural representation after Fig. 4 and Fig. 5 are assembled into outlet pipe.

Number in the figure: 1, copper pipe; 11, large-diameter portion; 12, joint; 13, minor diameter part; 14, salient point; 2, steel seat; 21, seat end; 211, the sharp limit of seat end chamfering; 22, seat surface; 23, the seat end; 231, seat vertex (vertices) limit chamfering.

Embodiment

Embodiment 1

The utility model combined type outlet pipe, in conjunction with Fig. 1, comprise copper 1 and steel seat 2, steel seat 2 is sleeved on the copper pipe 1 by Spielpassung, copper pipe 1 comprises large-diameter portion 11, minor diameter part 13, and be arranged at joint 12 between large-diameter portion 11 and the minor diameter part 13, and evenly being provided with 6 salient points 14 on minor diameter part 13 outside tube walls, this salient point 14 is by outside outstanding formation of outer wall; Steel seat 2 comprises seat end 21, the seat end 23 successively, and be connected smoothly seat end 21 and the seat surface 22 at the seat end 23.

In the present embodiment, the gap is 0.01mm between steel seat 2 and the copper pipe 1, in conjunction with Fig. 2, and copper pipe 1 total height L _ABe 43 ± 0.5mm, wall thickness b _ABe 1.1-1.2mm, wherein, large-diameter portion 11 height L _A1Be 12-13mm, inner diameter D _A1Be 9.7 ± 0.06mm; The height L of joint 12 _A2 Be 3 ± 0.4mm; The D outer diameter of minor diameter part 13 _A2Be 9.95-10mm.

In conjunction with Fig. 3, steel seat 2 total height L _BBe 7.8mm, inner diameter D _BBe 10.15-10.2mm.Wherein, the D outer diameter of seat end 21 _B1Be 12.5 ± 0.1mm, the sharp limit of seat end chamfering 211 is C0.5; Seat surface 22 comprises circular arc and fan-shaped two-part structure, wherein, is connected for circular arc between seat surface 22 and the seat end 21, radius of arc R is 1mm, for covering of the fan is connected, the angle theta of covering of the fan is 135 ± 3 ° at the end 23 for seat surface 22 and seat, and circular arc, covering of the fan two-part formation seamlessly transits corner; The seat ends 23 height L _B1Be 3.7mm, D outer diameter _B2Be 17 ± 0.2mm, seat vertex (vertices) limit chamfering 231 is C1.After the installation, in conjunction with Fig. 1, the distance L of the upper-end surface of steel seat 2 and copper pipe 1 upper-end surface _CBe 29.4 ± 0.3mm.

Adopt the combined type exhaust pipe structure of present embodiment, by the structure setting of copper pipe 1 with steel seat 2, make it to realize the Spielpassung installation, in welding process, directly fall into after the solder high-temperature fusion between the gap of copper pipe 1 and steel seat 2, copper pipe 1 is provided with salient point 14, on the one hand steel seat 2 is played positioning action, make steel seat 2 be installed in the specified position of copper pipe 1, guarantee that welding is proper, there is not deflection between copper pipe 1 and the steel seat 2, the using and installing of easy to exhaust pipe; On the other hand, the setting of salient point 14 evenly distributes solder between copper pipe 1 and steel seat 2, guaranteed the tightness of outlet pipe, testing result shows: lead to 3MPa pressurized air in combined type outlet pipe of the present utility model, all do not have leakage in 3 minutes, satisfy chiller plants such as air-conditioning fully to the requirement of exhaust connection part.

Embodiment 2

Present embodiment is identical with embodiment 1 setting and working principle, and difference is:

Copper pipe 1 total height L _ABe 37.5 ± 0.2mm, wherein, large-diameter portion 11 height L _A1Be 10-11mm, inner diameter D _A1Be 9.65-9.80mm; Be rounding off between large-diameter portion 11 and the joint 12, the height L of joint 12 _A2Be 1-2mm; The D outer diameter of minor diameter part 13 _A2Be 10-10.05mm; Minor diameter part 13 forms salient point 14 by inwall is outwards outstanding, and in conjunction with Fig. 4, salient point 14 is hemisphere, and radius R is 1mm, and the centre of sphere of salient point 14 is 3.5mm apart from the lower end surface of copper pipe 1 apart from m, the bilateral D outer diameter of salient point 14 _A3Be 10.16-10.21mm.

Steel seat 2 total height L _BBe 10 ± 0.2mm.Wherein, in conjunction with Fig. 5, the D outer diameter of seat end 21 _B1 Be 12 ± 0.2mm, inner diameter D _B3Be 10.07 ± 0.1mm, degree of depth h is 5.5 ± 0.3mm; Seat surface 22 is fan-shaped two-part structure, and the angle δ of fan-shaped two-part structure and vertical direction is 45 °; The seat ends 23 D outer diameter _B2Be 16.5 ± 0.2mm, seat vertex (vertices) limit chamfering 231 is C1.After the installation, in conjunction with Fig. 6, the distance L of the lower end surface of steel seat 2 and copper pipe 1 upper-end surface _dBe 42.5 ± 0.3mm.Adopt present embodiment gained outlet pipe, salient point 14 is the outstanding position structure that forms from inside to outside, and scolder is sprawled the whole end face of steel seat of outlet pipe, and the welding part can bear the above bending moment of 29.4Nm.

Embodiment 3

Copper pipe 1 total height L _ABe 31.8 ± 0.1mm, wherein, large-diameter portion 11 height L _A1Be 11.5 ± 0.5mm, inner diameter D _A1Be 8.05-8.15mm; Be rounding off between large-diameter portion 11 and the joint 12, the height L of joint 12 _A2 Be 3 ± 0.5mm; The D outer diameter of minor diameter part 13 _A2Be 8 ± 0.3mm; Minor diameter part 13 forms salient point 14 by inwall is outwards outstanding, and in conjunction with Fig. 4, salient point 14 is hemisphere, and radius R is 1mm, and the centre of sphere of salient point 14 is 3mm apart from the lower end surface of copper pipe 1 apart from m, the bilateral D outer diameter of salient point 14 _A3Be 8.13-8.15mm.

Steel seat 2 total height L _BBe 6.5 ± 0.2mm.Wherein, in conjunction with Fig. 5, the D outer diameter of seat end 21 _B1Be 10mm, inner diameter D _B3Be 8.05 ± 0.01mm, degree of depth h is 5.3 ± 0.2mm; Seat surface 22 is fan-shaped two-part structure, and the angle δ of fan-shaped two-part structure and vertical direction is 45 °; The seat ends 23 D outer diameter _B2Be 14.5-14.7mm.After the installation, in conjunction with Fig. 6, the distance L of the lower end surface of steel seat 2 and copper pipe 1 upper-end surface _dBe 33 ± 0.3mm.Adopt present embodiment gained outlet pipe, scolder is sprawled the whole end face of steel seat of outlet pipe, and the welding part can bear the above bending moment of 29.4Nm.

Claims

1. combined type outlet pipe, it is characterized in that: comprise copper pipe and steel seat, the steel seat is sleeved on the copper pipe by Spielpassung, and copper pipe is equipped with salient point laterally, and the gap is 0.01-0.15mm between steel seat and the copper pipe.

2. combined type outlet pipe according to claim 1, it is characterized in that: described copper pipe is made up of large-diameter portion, minor diameter part and joint between the two, and salient point is arranged on minor diameter part.

3. combined type outlet pipe according to claim 1, it is characterized in that: described steel seat comprises seat end, the seat end successively, and be connected smoothly seat end and the seat surface at the seat end, wherein, seat surface comprises circular arc and fan-shaped two-part structure, is connected for circular arc between seat surface and the seat end and forms arc structure, be connected for covering of the fan at seat surface and an end and form sector structure, circular arc, covering of the fan two-part formation seamlessly transit corner.

4. combined type outlet pipe according to claim 2 is characterized in that: described salient point is formed to outer wall is outstanding by the copper pipe inwall.

5. combined type outlet pipe according to claim 2 is characterized in that: described salient point is by outside outstanding formation of copper pipe outer wall.