CN206846105U - The spheroidal graphite cast-iron multiple tube of inner liner stainless steel - Google Patents
The spheroidal graphite cast-iron multiple tube of inner liner stainless steel Download PDFInfo
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- CN206846105U CN206846105U CN201720790009.6U CN201720790009U CN206846105U CN 206846105 U CN206846105 U CN 206846105U CN 201720790009 U CN201720790009 U CN 201720790009U CN 206846105 U CN206846105 U CN 206846105U
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- stainless steel
- pipe
- steel bushing
- ductile iron
- bushing pipe
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Abstract
A kind of spheroidal graphite cast-iron multiple tube of inner liner stainless steel, it is related to spheroidal graphite cast-iron composite pipe field, including ductile iron pipe, stainless steel bushing pipe is provided with ductile iron pipe, stainless steel bushing pipe is welded by ribbon spiral coiling, and the thickness of stainless steel bushing pipe is 0.1mm~3mm.Stainless steel bushing pipe is fitted on the inwall of ductile iron pipe by hydrostatic(al) process.The utility model is provided with stainless steel bushing pipe in the inner side of ductile iron pipe as protective layer, so that the water inside pipeline be separated with undesirable appearance, pipeline is had good strength character and antiseptic property concurrently, and can effectively save a large amount of precious metals.Therefore, the utility model has good economic benefits and social effect, can promote the use of a large area.For the utility model compared with using bulk steel plate to cut manufactured pipe structure along axis curling in the prior art, body made of spiral welded hardly produces leftover pieces in production, so as to effectively save the use of material.
Description
Technical field
The utility model belongs to spheroidal graphite cast-iron tubing field, more particularly to a kind of spheroidal graphite cast-iron of inner liner stainless steel is compound
Pipe.
Background technology
Spheroidal graphite cast-iron tubing is a kind of feedwater transmission ＆ distribution facility commonly used in industrial and civilian each field.It is now widely used
Carbon, sulphur in spheroidal graphite cast-iron tubing, phosphorus content are high, flow, wash away in the duct with dampening, to making this layer of Summoning instant soon
Solution, rust is rotten, generates substantial amounts of iron red rusting water, endangers the health of people.Coarse, the density metal additionally, due to cast iron pipe bore area
Small, loose, harmful levels of pathogens and microorganism in water body are very easy to absorption on the inwall of tubing, accumulate over a long period, and harm aggravates.
In order to solve the above problems, Authorization Notice No. is that CN201166196Y utility model patent discloses a kind of spheroidal graphite cast-iron liner
Stainless steel composite pipe, solves above mentioned problem to a certain extent.However, the stainless steel bushing pipe in this tubing uses bulk steel
Plate is made along axis curling, can produce substantial amounts of tailing during production, cause the waste of material.
The content of the invention
The utility model provides a kind of spheroidal graphite cast-iron multiple tube of inner liner stainless steel, to solve to propose in above-mentioned background technology
The problem of.
The technical problem that the utility model solves is realized using following technical scheme：The utility model provides one kind
The spheroidal graphite cast-iron multiple tube of inner liner stainless steel, including ductile iron pipe, stainless steel bushing pipe, stainless steel are provided with ductile iron pipe
Bushing pipe is welded by ribbon spiral coiling, and the thickness of stainless steel bushing pipe is 0.1mm~3mm.
Described stainless steel bushing pipe is fitted on the inwall of ductile iron pipe by hydrostatic(al) process.Described stainless steel bushing pipe leads to
Spinning process is crossed to be fitted on the inwall of ductile iron pipe.
The beneficial effects of the utility model are：
1st, the utility model is provided with stainless steel bushing pipe in the inner side of ductile iron pipe as protective layer, so as to by pipeline
The water in portion separates with undesirable appearance, pipeline is had good strength character and antiseptic property concurrently, and can be effectively save big
Measure precious metal.Therefore, the utility model has good economic benefits and social effect, can promote the use of a large area.
2nd, the stainless steel bushing pipe in the utility model is made up of wide strip, forms tubular structure after ribbon spiral coiling, together
When on the surface of tubular structure form spiral helicine gap, carrying out welding along spiral helicine gap forms spiral weld, so as to make
Into structure and the body of dimensionally stable.With using bulk steel plate to cut manufactured pipe structure phase along axis curling in the prior art
Than body made of spiral welded hardly produces leftover pieces in production, so as to effectively save the use of material.
3rd, in the utility model, Each performs its own functions for ductile iron pipe and stainless steel bushing pipe, and ductile iron pipe is used for ensureing again
The structural strength of pipe is closed, stainless steel lining pipe is used for protecting ductile iron pipe, protects it from corroding and avoiding microbial growth, spheroidal graphite
Not interdepending functionally for cast iron pipe and stainless steel bushing pipe, also need not mutually be limited, therefore, the utility model is got rid of in structure
The restriction in the prior art to the two thickness proportion has been abandoned, and only to stainless steel bushing pipe, the thickness of this newly-increased structure is limited
Fixed (because ductile iron pipe largely exists in the prior art, therefore its thickness belongs to common technical knowledge, it is not necessary to limits), will be stainless
The thickness limit of the steel liner tube can effectively ensure that protection effect between 0.1mm~3mm, and ensure of the present utility model to use the longevity
Life.
Brief description of the drawings
Fig. 1 is horizontal cross-section structure diagram of the present utility model；
Fig. 2 is the external structure schematic diagram of stainless steel bushing pipe.
In figure, 1- ductile iron pipes, 2- stainless steel bushing pipes, 3- spiral welds.
Embodiment
The utility model is described further below in conjunction with accompanying drawing：
The utility model includes ductile iron pipe 1, and stainless steel bushing pipe 2 is provided with ductile iron pipe 1.In ductile iron pipe
There is provided stainless steel bushing pipe 2 for 1 inner side to be used as protective layer, so as to which the water inside pipeline be separated with undesirable appearance, not only makes pipe
Road has good strength character and antiseptic property concurrently, and can effectively save a large amount of precious metals.Therefore, the utility model has
Good economic benefits and social effect, can promote the use of a large area.
Stainless steel bushing pipe 2 is welded by ribbon spiral coiling.Stainless steel bushing pipe 2 in the utility model is by wide strip system
Tubular structure is formed after into the coiling of, ribbon spiral, while spiral helicine gap is formed on the surface of tubular structure, along spiral helicine
Gap carries out welding and forms spiral weld, so as to which the body of structure and dimensionally stable be made.With using bulk steel in the prior art
Plate cuts manufactured pipe structure along axis curling and compared, and body made of spiral welded hardly produces corner in production
Material, so as to effectively save the use of material.
The thickness of stainless steel bushing pipe 2 is 0.1mm~3mm.In the utility model, ductile iron pipe 1 and stainless steel bushing pipe 2
Each performs its own functions, and ductile iron pipe 1 is used for ensureing the structural strength of multiple tube, and stainless steel bushing pipe 2 is used for protecting ductile iron pipe 1,
Protect it from corroding and avoid microbial growth, not interdepending functionally for ductile iron pipe 1 and stainless steel bushing pipe 2, tying
Also need not mutually it be limited on structure, therefore, the utility model has abandoned the restriction to the two thickness proportion in the prior art, and only right
Thickness of this newly-increased structure of stainless steel bushing pipe 2 be defined (because ductile iron pipe 1 largely exists in the prior art,
Therefore its thickness belongs to common technical knowledge, it is not necessary to limits), by the thickness limit of stainless steel bushing pipe 2 between 0.1mm~3mm, can have
Effect ensures protection effect, and ensures service life of the present utility model.
Described stainless steel bushing pipe 2 can be fitted on the inwall of ductile iron pipe 1 by hydrostatic(al) process.The embodiment party of hydrostatic(al) process
Method is the both ends closure for the stainless steel bushing pipe 2 that will be inserted in ductile iron pipe 1, and water under high pressure is then injected into annular seal space, is made not
The diameter of the steel liner tube 2 that becomes rusty increases, and then is fitted on the inwall of ductile iron pipe 1.Produced using hydrostatic(al) process, stainless steel bushing pipe 2
Original finish of tube wall will not be at all destroyed, so as to ensure that the antiseptic property of stainless steel material is unaffected.
Described stainless steel bushing pipe 2 can be also fitted on the inwall of ductile iron pipe 1 by spinning process.The implementation of spinning process
Method is that the tube wall of stainless steel bushing pipe 2 is rolled from the inside of stainless the steel liner tube 2 using pressure roller, tube wall is extended and deforms,
So that stainless steel bushing pipe 2 is fitted on the inwall of ductile iron pipe 1.Produced using spinning process, the tube wall of stainless steel bushing pipe with
Ductile iron pipe 1 is bonded closer, and production equipment is simpler, and speed of production is higher, and in the absence of the risk that high pressure is hurted sb.'s feelings.
Claims (3)
1. a kind of spheroidal graphite cast-iron multiple tube of inner liner stainless steel, including ductile iron pipe (1), it is characterised in that：Ductile iron pipe
(1) stainless steel bushing pipe (2) is provided with, stainless steel bushing pipe (2) is welded by ribbon spiral coiling, stainless steel bushing pipe (2)
Thickness is 0.1mm~3mm.
A kind of 2. spheroidal graphite cast-iron multiple tube of inner liner stainless steel according to claim 1, it is characterised in that：Described is stainless
The steel liner tube (2) is fitted in by hydrostatic(al) process on the inwall of ductile iron pipe (1).
A kind of 3. spheroidal graphite cast-iron multiple tube of inner liner stainless steel according to claim 1, it is characterised in that：Described is stainless
The steel liner tube (2) is fitted in by spinning process on the inwall of ductile iron pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790009.6U CN206846105U (en) | 2017-06-30 | 2017-06-30 | The spheroidal graphite cast-iron multiple tube of inner liner stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720790009.6U CN206846105U (en) | 2017-06-30 | 2017-06-30 | The spheroidal graphite cast-iron multiple tube of inner liner stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206846105U true CN206846105U (en) | 2018-01-05 |
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ID=60804076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720790009.6U Active CN206846105U (en) | 2017-06-30 | 2017-06-30 | The spheroidal graphite cast-iron multiple tube of inner liner stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206846105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589467A (en) * | 2022-03-29 | 2022-06-07 | 成都光明派特贵金属有限公司 | Precious metal multistage reducing channel and manufacturing method thereof |
-
2017
- 2017-06-30 CN CN201720790009.6U patent/CN206846105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589467A (en) * | 2022-03-29 | 2022-06-07 | 成都光明派特贵金属有限公司 | Precious metal multistage reducing channel and manufacturing method thereof |
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