CN201902745U

CN201902745U - Connecting piece of ductile cast-iron pipe and branch pipe

Info

Publication number: CN201902745U
Application number: CN201020671389XU
Authority: CN
Inventors: 龚辉弟
Original assignee: ZHEJIANG HUASHUI PIPELINE TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG HUASHUI PIPELINE TECHNOLOGY Co Ltd
Priority date: 2010-12-14
Filing date: 2010-12-14
Publication date: 2011-07-20
Anticipated expiration: 2020-12-14

Abstract

The utility model discloses a connecting piece of a ductile cast-iron pipe and a branch pipe. The connecting piece comprises a stainless steel sleeve pipe, wherein the ductile cast-iron pipe is sleeved with the stainless steel sleeve pipe, a branch pipe connector corresponding to the branch pipe to be connected on the ductile cast-iron pipe body is arranged on the stainless steel sleeve pipe, and the branch pipe connector on the stainless steel sleeve pipe is identical in size with the orifice of the branch pipe to be connected. A wing ring used for sealing the gap between the inner wall of the stainless steel sleeve pipe and the outer wall of the ductile cast-iron pipe is arranged on the inner wall of the stainless steel sleeve pipe. By adopting the connecting piece, the branch pipe can be easily welded at the branch pipe connector on the stainless steel sleeve pipe, and the operation is very convenient; and the wing ring on the inner wall of the stainless steel sleeve pipe can seal the gap between the inner wall of the stainless steel sleeve pipe and the outer wall of the ductile cast-iron pipe, so as to avoid the poor sealing between the pipe walls.

Description

The link of ductile iron pipe and arm

Technical field

The utility model relates to the pipeline field, relates in particular to the link of a kind of ductile iron pipe and arm.

Background technique

Because ductile iron pipe hardness and the higher difficult welding of fragility, its Placement adopts short tube more, connection pipe fitting such as tee pipe, dish bearing sleeve pipe interconnects totally, this Placement is fit to the initial plan construction of ductile iron pipe pipe network, after if the ductile iron pipe pipeline network construction is intact, connecting branch is just relatively more difficult on the spheroidal graphite cast iron pipeline again, common way is a segment pipe that removes between two cast iron tubes, increases cast iron pipe fittings, and then picks out arm.This way tubing processing difficulties and construction are complicated, and increase the pipe-networks engineering cost.

The model utility content

In view of this, technical problem to be solved in the utility model is: a kind of ductile iron pipe easy to connect and the link of arm are provided.

In order to achieve the above object, the utility model adopts following technological scheme to realize:

The link of a kind of ductile iron pipe and arm, wherein: comprise one in order to be socketed in the stainless steel sleeve pipe on the ductile iron pipe, the position of the corresponding ductile iron pipe pipe shaft of described stainless steel sleeve pipe arm to be connected has corresponding arm connection mouth, and the arm connection mouth on the described stainless steel sleeve pipe is identical with the mouth of pipe size of arm to be connected.

As preferably: also be provided with wing ring on the inwall of described stainless steel sleeve pipe in order to slit between the inwall that seals described stainless steel sleeve pipe and the described ductile iron pipe outer wall.

As shown from the above technical solution, the beneficial effects of the utility model are:

Compared to existing technology, the link of ductile iron pipe of the present utility model and arm adopts the stainless steel sleeve form of tubes, it is socketed on the ductile iron pipe and with the position of ductile iron pipe pipe shaft arm to be connected and has corresponding arm connection mouth, therefore arm can be welded in easily the arm connection mouth place that offers on the stainless steel sleeve pipe, operation is very easy, and by on the inwall of described stainless steel sleeve pipe, also being provided with wing ring, can be in order to slit between the inwall that seals described stainless steel sleeve pipe and the described ductile iron pipe outer wall, thus poor sealing between the tube wall avoided.

Description of drawings

Fig. 1 is the linkage structure schematic representation one of ductile iron pipe in the utility model, stainless steel sleeve pipe and arm.

Fig. 2 is the linkage structure schematic representation two of ductile iron pipe in the utility model, stainless steel sleeve pipe and arm.

Embodiment

In order to make those skilled in the art can further understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing.

See also Figure 1 and Figure 2, the utility model provides the link of a kind of ductile iron pipe and arm, wherein: comprise one in order to be socketed in the stainless steel sleeve pipe 2 on the ductile iron pipe 1, the position of described stainless steel sleeve pipe 2 corresponding ductile iron pipe pipe shafts arm 3 to be connected has corresponding arm connection mouth 4, and the arm connection mouth 4 on the described stainless steel sleeve pipe 2 is identical with the mouth of pipe size of arm 3 to be connected.For the enhanced leaktightness effect, also be provided with wing ring 5 on the inwall of described stainless steel sleeve pipe 2 in order to slit between the inwall that seals described stainless steel sleeve pipe and the described ductile iron pipe outer wall.

But the above only is a preferable possible embodiments of the present utility model, is not in order to limit to claim of the present utility model, so the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, all in like manner to be included in the scope of the present utility model.

Claims

1. the link of ductile iron pipe and arm, it is characterized in that: comprise one in order to be socketed in the stainless steel sleeve pipe on the ductile iron pipe, the position of the corresponding ductile iron pipe pipe shaft of described stainless steel sleeve pipe arm to be connected has corresponding arm connection mouth, and the arm connection mouth on the described stainless steel sleeve pipe is identical with the mouth of pipe size of arm to be connected.

2. the link of ductile iron pipe as claimed in claim 1 and arm is characterized in that: also be provided with the wing ring in order to slit between the inwall that seals described stainless steel sleeve pipe and the described ductile iron pipe outer wall on the inwall of described stainless steel sleeve pipe.