CN206018105U - A kind of abrasion-proof bent tube - Google Patents
A kind of abrasion-proof bent tube Download PDFInfo
- Publication number
- CN206018105U CN206018105U CN201620870467.6U CN201620870467U CN206018105U CN 206018105 U CN206018105 U CN 206018105U CN 201620870467 U CN201620870467 U CN 201620870467U CN 206018105 U CN206018105 U CN 206018105U
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- China
- Prior art keywords
- wear
- arc
- pipe
- abrasion
- resisting pipeline
- 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.)
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Abstract
The utility model discloses a kind of abrasion-proof bent tube, including hollow arc carbon steel pipe and the interior arc wear-resistant pipe for being lining in carbon steel pipe inwall, the wear-resistant pipe includes the two wear-resisting pipeline sections for mutually splicing, and stitching portion is knuckle, and the wear-resisting pipeline section that two wear-resisting pipeline section middle positions are saved on arc is arc.This utility model abrasion-proof bent tube includes that hollow arc carbon steel pipe and the interior arc wear-resistant pipe for being lining in carbon steel pipe inwall, inner liner abrasive resistant pipe have cast wear-resisting effect using high chromium cast iron material, and outside carbon steel pipe plays a supportive role.Wear-resistant pipe mutually splices for two wear-resisting pipeline sections, stitching portion is knuckle, the bending radius of two wear-resisting pipeline sections is big, the radian that the wear-resistant pipe of knuckle splicing composition is overall is just big, and then bend pipe overall dimensions are little, bend pipe flow resistance is little, solve the technical problem for having crest line, cost high inside bend pipe in prior art.
Description
Technical field
This utility model is related to a kind of pipe fitting, and in particular to a kind of abrasion-proof bent tube.
Background technology
Abrasion-proof bent tube is applied in pneumatic transport ash disposal system, is the important channel for transmitting coal ash, its gateway and carbon steel
Pipe straight pipeline connects.The medium of transmission is gas-solid two phase flow, and gas is air, and solid is the lime-ash of generation after coal combustion,
Main component is the higher mixture of the hardness such as silicon dioxide, aluminium sesquioxide, 350 DEG C or so of temperature, and pressure is 1.6MPa.
When medium is moved in straight pipeline, the direction of motion is identical with tube wall direction, hardly produces abrasion to tube wall.When medium is passed through
During curved pipe, then impact can be formed to bend pipe back of the body arc and be worn and torn.
For solving this problem, existing technology mainly adopts bimetallic pipe bending technique at present.In bimetallic pipe bending technique
High-abrasive material is rich chromium cast iron, typically using Technology of EPC, high-abrasive material is cast in carbon steel inside pipe wall, plays wear-resisting work
With outside its supporting role of carbon steel pipe.Compensate for rich chromium cast iron hardness height, the defect of poor toughness.Due to abrasion-proof bent tube main
Abrading section is located at the outer arc of bend pipe, and therefore the wearing layer wall ratio of outer arc is thicker, and the wall ratio of inner arc is relatively thin.
But bimetallic pipe bending technique there is also certain defect, on the one hand it is due to using outer arc during Technology of EPC
Than larger, inner arc thickness is little for thickness, attempts to make material be fully utilized, even if being that inner arc thickness is smaller, is not
Any material is not arranged, and the position of these high-abrasive materials that arranges is not exposed to wear and tear, and therefore inevitably causes
Waste of material, and high-abrasive material high cost causes its cost higher.On the other hand it is to form dried shrimps waist in bend pipe, due to outside
There are the steel pipe of rounding off, surface can't see；But there is obvious crest line inside, as shown in figure 1, the rough increase of inwall
The flow resistance of transmission medium.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided a kind of abrasion-proof bent tube, solves existing
There is the technical problem for having crest line, cost high inside bend pipe in technology.
For solving above-mentioned technical problem, this utility model provides a kind of abrasion-proof bent tube, including hollow arc carbon steel pipe
With the interior arc wear-resistant pipe for being lining in carbon steel pipe inwall, it is characterized in that, the wear-resistant pipe includes the two wear-resisting pipeline sections for mutually splicing, spell
Place is met for knuckle, the wear-resisting pipeline section that two wear-resisting pipeline section middle positions are saved on arc is arc.
Further, the bending radius scope of the wear-resisting pipeline section of arc is 5 ~ 10 times of scopes of its caliber.
Further, two wear-resisting pipeline sections are bending radius identical arc.
Further, another wear-resisting pipeline section is straight tube.
Further, the caliber of the wear-resisting pipeline section of arc is 159mm, and bending radius is 800mm.
Further, wear-resisting pipeline section is cast for high chromium cast iron material.
Further, the outer arc thickness of wear-resistant pipe is more than inner arc thickness.
Further, the two ends of the carbon steel pipe are connected with ring flange.
Compared with prior art, the beneficial effect reached by this utility model is：This utility model abrasion-proof bent tube includes sky
The arc carbon steel pipe of the heart and the interior arc wear-resistant pipe for being lining in carbon steel pipe inwall, inner liner abrasive resistant pipe are cast using high chromium cast iron material
Wear-resisting effect, outside carbon steel pipe play a supportive role.Wear-resistant pipe mutually splices for two wear-resisting pipeline sections, and stitching portion is knuckle, and two
The bending radius of individual wear-resisting pipeline section is big, and the radian that the wear-resistant pipe of knuckle splicing composition is overall is just big, and then bend pipe entirety chi
The flow resistance of very little little, bend pipe is little, solves the technical problem for having crest line, cost high inside bend pipe in prior art.
Description of the drawings
Fig. 1 is the structural representation of abrasion-proof bent tube in prior art.
Fig. 2 is the structural representation of this utility model abrasion-proof bent tube.
Fig. 3 is the structural representation of this utility model wear-resistant pipe embodiment one.
Fig. 4 is the structural representation of this utility model wear-resistant pipe embodiment two.
Reference：1st, carbon steel pipe；2nd, wear-resistant pipe；2-1, wear-resisting pipeline section one；2-2, wear-resisting pipeline section two；3rd, ring flange.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.Following examples are only used for this is clearly described
The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.
As in Figure 2-4, a kind of abrasion-proof bent tube of the present utility model, including hollow arc carbon steel pipe 1 and interior is lining in carbon
The arc wear-resistant pipe 2 of 1 inwall of steel pipe, is characterized in that, the wear-resistant pipe 2 includes one 2-1 of wear-resisting pipeline section for mutually splicing and wear-resistant pipe
Two 2-2 of section, stitching portion is knuckle, and one 2-1 of wear-resisting pipeline section is located on arc and saves, and two 2-2 of wear-resisting pipeline section is located under arc and saves,
One 2-1 of wear-resisting pipeline section is arc.The bending radius of one 2-1 of wear-resisting pipeline section is 5 ~ 10 times of scopes of its caliber.
Embodiment one
As shown in figure 3, in the present embodiment, one 2-1 of wear-resisting pipeline section saved on arc is arc, saves under arc
Two 2-2 of wear-resisting pipeline section be and one 2-1 bending radius identical arcs of wear-resisting pipeline section, one 2-1 of wear-resisting pipeline section and wear-resisting pipeline section two
The bending radius scope of 2-2 is 795mm ~ 1500mm, and caliber is 159mm.One 2-1 of wear-resisting pipeline section is spelled with two 2-2 phases of wear-resisting pipeline section
The wear-resistant pipe of group camber is connect, stitching portion is knuckle.The bending radius of two wear-resisting pipeline sections is bigger, knuckle splicing group
Into the overall radian of wear-resistant pipe bigger, and then bend pipe overall dimensions are less, and the flow resistance of bend pipe is less.Due to bend pipe
Overall structure is little, and the high-abrasive material of needs is few, it is possible to reduce cost.Through test, when bending radius is 800mm, knuckle
The flow resistance of the abrasion-proof bent tube of splicing composition is little, and anti-wear performance is good, and cost is minimum.
Embodiment two
As shown in figure 4, in the present embodiment, one 2-1 of wear-resisting pipeline section saved on arc is arc, saves under arc
Two 2-2 of wear-resisting pipeline section be straight tube, the bending radius scope of one 2-1 of wear-resisting pipeline section is 795mm ~ 1500mm, one 2-1 of wear-resisting pipeline section
159mm is with the caliber of two 2-2 of wear-resisting pipeline section.Two 2-2 phase splicing group cambers of one 2-1 of wear-resisting pipeline section and wear-resisting pipeline section resistance to
Mill pipe, stitching portion is knuckle.The bending radius of wear-resisting pipeline section one is bigger, the wear-resistant pipe entirety of knuckle splicing composition
Radian is bigger, and the flow resistance of bend pipe is less.Through test, when bending radius is 800mm, it is resistance to that knuckle splicing is constituted
The flow resistance of mill bend pipe is little, and anti-wear performance is good.
Further, wear-resisting pipeline section is cast for high chromium cast iron material, improves the wearability of wear-resisting pipeline section work surface.In order to more
The abrasion resistant effect of bend pipe is further improved, and the outer arc thickness of wear-resistant pipe 2 is more than inner arc thickness, increases anti-impact to carry out local strengthening
Hitting property, the scope of outer arc thickness.
Further, the two ends of the carbon steel pipe 1 are connected with ring flange 3, straight to connect other carbon steel pipes by ring flange 3
Pipeline, facilitates installing/dismounting.
The manufacturing process of this utility model abrasion-proof bent tube is：
Step one, casts out wear-resisting pipeline section one and wear-resisting pipeline section two using high chromium cast iron material, curved in order to further improve
The abrasion resistant effect of pipe, wear-resisting pipeline section one and wear-resisting pipeline section two can cast eccentric pipeline section of the outer arc thickness more than inner arc thickness；
Step 2, the wear-resistant pipe that wear-resisting pipeline section one and wear-resisting pipeline section two are welded splicing camber, stitching portion are polished and were
Cross fillet；
Carbon steel pipe, with wear-resistant pipe as core pipe, is fabricated to two 1/2 carbon steel pipes by rolling machine and bender by step 3,
It is casting gap to be then placed in gap between the carbon steel pipe of pairing after wear-resistant pipe, wear-resistant pipe and outsourcing, is produced by casting technique
Natural gap, by current technique for, in 1mm or so, and make carbon steel pipe two ends slightly longer go out wear-resistant pipe.
Step 4, by two 1/2 carbon steel pipe soldering and sealing, first spot welding, after be welded with, then full weld welds steel pipe after seam, then butt welding
Seam welding scar and welding slag carry out cleaning polishing, are allowed to surfacing smooth.
Step 5, is welded ring flange in carbon steel pipe two-port, to be connected with other carbon steel pipe straight pipelines.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model know-why, some improvement and modification can also be made, these change
Enter protection domain of the present utility model is also should be regarded as with modification.
Claims (8)
1. a kind of abrasion-proof bent tube, including hollow arc carbon steel pipe and the interior arc wear-resistant pipe for being lining in carbon steel pipe inwall, its feature
It is that the wear-resistant pipe includes the two wear-resisting pipeline sections for mutually splicing, stitching portion is knuckle, and two wear-resisting pipeline section middle positions are in arc
The wear-resisting pipeline section of upper section is arc.
2. a kind of abrasion-proof bent tube according to claim 1, is characterized in that, the bending radius scope of the wear-resisting pipeline section of arc is which
5 ~ 10 times of caliber.
3. a kind of abrasion-proof bent tube according to claim 2, is characterized in that, two wear-resisting pipeline sections are bending radius identical arc
Shape.
4. a kind of abrasion-proof bent tube according to claim 2, is characterized in that, another wear-resisting pipeline section is straight tube.
5. a kind of abrasion-proof bent tube according to claim 3 or 4, is characterized in that, the caliber of the wear-resisting pipeline section of arc is
159mm, bending radius are 800mm.
6. a kind of abrasion-proof bent tube according to claim 1, is characterized in that, wear-resisting pipeline section is cast for high chromium cast iron material.
7. a kind of abrasion-proof bent tube according to claim 6, is characterized in that, the outer arc thickness of wear-resistant pipe is more than inner arc thickness.
8. a kind of abrasion-proof bent tube according to claim 1, is characterized in that, the two ends of the carbon steel pipe are connected with ring flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620870467.6U CN206018105U (en) | 2016-08-12 | 2016-08-12 | A kind of abrasion-proof bent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620870467.6U CN206018105U (en) | 2016-08-12 | 2016-08-12 | A kind of abrasion-proof bent tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206018105U true CN206018105U (en) | 2017-03-15 |
Family
ID=58247834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620870467.6U Expired - Fee Related CN206018105U (en) | 2016-08-12 | 2016-08-12 | A kind of abrasion-proof bent tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206018105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015802A (en) * | 2016-08-12 | 2016-10-12 | 北京国电富通科技发展有限责任公司 | Wear-resisting bend |
-
2016
- 2016-08-12 CN CN201620870467.6U patent/CN206018105U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015802A (en) * | 2016-08-12 | 2016-10-12 | 北京国电富通科技发展有限责任公司 | Wear-resisting bend |
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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: 20170315 Termination date: 20180812 |