CN207494216U - A kind of hot-strip high-pressure water descaling system - Google Patents
A kind of hot-strip high-pressure water descaling system Download PDFInfo
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- CN207494216U CN207494216U CN201721427638.9U CN201721427638U CN207494216U CN 207494216 U CN207494216 U CN 207494216U CN 201721427638 U CN201721427638 U CN 201721427638U CN 207494216 U CN207494216 U CN 207494216U
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- collector pipe
- upper header
- lower collector
- nozzle
- pressure water
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Abstract
The utility model is related to a kind of hot-strip high-pressure water descaling systems, belong to hot-strip production equipment technology.Technical solution is：Include upper header（1）, lower collector pipe（2）, upper header nozzle（3）, lower collector pipe nozzle（4）, upper header inlet channel（6）, lower collector pipe inlet channel（7）With high pressure water main pipeline（9）, upper header（1）And lower collector pipe（2）Parallel arrangement up and down, upper header（1）And lower collector pipe（2）On be respectively equipped with upper header nozzle positioned opposite（3）With lower collector pipe nozzle（4）, upper header nozzle（3）Flow be more than lower collector pipe nozzle（4）Flow, upper header（1）And lower collector pipe（2）Pass through upper header inlet channel respectively（6）With lower collector pipe inlet channel（7）With high pressure water main pipeline（8）Connection.The beneficial effects of the utility model are：On the basis of the de-scaling requirement of strip lower surface is met, the de-scaling ability of strip upper surface is obviously improved, is conducive to the raising of strip surface quality.
Description
Technical field
The utility model is related to a kind of hot-strip high-pressure water descaling systems, belong to metallurgy industry hot-strip production equipment
Technical field.
Background technology
On hot-rolled strip production line, high-pressure water descaling system is that the most critical for generating iron scale press-in defect is avoided to set
It is standby.
In general, in production practices, iron scale press-in defect occurs mainly in hot-rolled sheet strip steel caused by de-scaling is not cleaning
Upper surface, the surface quality of the lower surface of strip are significantly better than the surface quality of upper surface.Even Si, Cr content it is higher
The variety steel for the special construction for being difficult removal is formed in iron scale, still seldom there is iron scale press-in defect in lower surface, under
Scale on surface residual rate and severity are much smaller than upper surface.
Only a small number of special steel grades are likely to occur being pressed into defect caused by de-scaling is not cleaning in strip lower surface.
At present, in the high-pressure water descaling system of hot-strip, the pressure of upper and lower de-scaling water, flow are identical.But
In hot-rolled sheet strip steel production process, upper surface is in open state, when only rolling just and roll contact, lower surface in addition to
Outside roll contact, also constantly contacted with roller roller, loop back roll etc., therefore, in production, the iron scale that upper and lower surface is formed
Thickness, structure be distinguishing：The iron scale of upper surface is thicker, deteriorates the weaker zone proportion bigger of scale removal effect；
Thin more, and the mainly better compacted zone of scale removal effect of the iron scale thickness ratio upper surface of lower surface.
On sheet billet continuous casting and rolling production line, high-pressure water descaling system is by the way of small flow, big pressure.During production
To ensure the scale removal effect of upper surface, descaling system pressure, which usually requires that, reaches >=30MPa.But according to pilot production, when except
During squama system pressure only 16MPa, the scale removal effect of lower surface during >=30MPa with not changing, and the surface quality of lower surface is still
It is very good.On middle slab continuous rolling production line, descaling system is by the way of big flow, small pressure.Descaling system pressure is general
In 14~22MPa.When descaling system pressure reduction is to 12MPa, the iron scale residual rate of upper surface sharply increases, upper surface
Surface quality cannot meet factory calibration, but the iron scale of lower surface press-in defect has no significant change, lower surface
Surface quality meets factory calibration.
Therefore, it no matter by the way of small flow, big pressure or by the way of big flow, small pressure, is removing up and down
In the case that squama collector is using same traffic, pressure, usually all there are the serious superfluous feelings of ability for the de-scaling impact force of lower collector pipe
Condition, and the de-scaling impact force of upper header is generally only enough reluctantly.
Utility model content
The utility model aim is to provide a kind of hot-strip high-pressure water descaling system, in the de-scaling for meeting strip lower surface
On the basis of it is required that, the de-scaling ability of strip upper surface is obviously improved, solves the problems, such as background technology.
The technical solution of the utility model is：
A kind of hot-strip high-pressure water descaling system, comprising upper header, lower collector pipe, upper header nozzle, lower collector pipe nozzle,
Upper header inlet channel, lower collector pipe inlet channel and high pressure water main pipeline, upper header and lower collector pipe are arranged in parallel up and down, upper header
Be respectively equipped with upper header nozzle positioned opposite and lower collector pipe nozzle in lower collector pipe, under the flow of the upper header nozzle is more than
The flow of collector nozzle, upper header and lower collector pipe pass through upper header inlet channel and lower collector pipe inlet channel and high pressure water master respectively
Pipeline connects.
The flow of the upper header nozzle is 1.1~1.8 times of the flow of lower collector pipe nozzle.
The diameter of the upper header is more than the diameter of lower collector pipe, and the diameter of upper header inlet channel is more than lower collector pipe water inlet pipe
The diameter in road.
Using the utility model, in the case where upper header nozzle is identical with lower collector pipe nozzle entrance water pressure, due to upper
The flow of collector nozzle is 1.1~1.8 times of the flow of lower collector pipe nozzle, high according to the calculation formula of high pressure water flow strikes power
Pressure water flow impact pressure is directly proportional to flow, and therefore, upper header high pressure water flow strikes power is the 1.1 of lower collector pipe high pressure water flow strikes power
~1.8 times, relative to upper header nozzle with lower collector pipe nozzle flow it is identical in the case of, since upper header nozzle and lower collector pipe are sprayed
The difference of the flow of mouth so that the high pressure water flow strikes power of upper header improves 5%~29%.
The beneficial effects of the utility model are：The high pressure water flow strikes power of upper header is enabled to improve 5%~29%,
On the basis of meeting the de-scaling requirement of strip lower surface, it is obviously improved the de-scaling ability of strip upper surface.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
In figure：Upper header 1, lower collector pipe 2, upper header nozzle 3, lower collector pipe nozzle 4, upper header inlet channel 6, lower collector pipe
Inlet channel 7, high pressure water main pipeline 8.
Specific embodiment
Below in conjunction with attached drawing, by example, the utility model is described in further detail.
With reference to attached drawing 1, a kind of hot-strip high-pressure water descaling system includes upper header 1, lower collector pipe 2, upper header nozzle
3rd, lower collector pipe nozzle 4, upper header inlet channel 6, lower collector pipe inlet channel 7 and high pressure water main pipeline 8, upper header 1 and lower collector pipe 2
It is arranged in parallel up and down, upper header nozzle 3 positioned opposite and lower collector pipe nozzle 4, institute is respectively equipped on upper header 1 and lower collector pipe 2
The flow for stating upper header nozzle 3 is more than the flow of lower collector pipe nozzle 4, and upper header 1 and lower collector pipe 2 pass through upper header water inlet pipe respectively
Road 6 and lower collector pipe inlet channel 7 are connect with high pressure water main pipeline 8.
In the present embodiment, the flow of descaling system upper header nozzle 3 is the 1.1~1.8 of the flow of lower collector pipe nozzle 4
Times.Upper header 1, upper header inlet channel 6 internal diameter difference lower collector pipe 2, lower collector pipe inlet channel 7 internal diameter 1.1~1.8
Times.
By changing the flow of upper header nozzle 3 and the flow of lower collector pipe nozzle 4 so that the high pressure water flow strikes of upper header
Power improves 5%~29%, ensures that the upper and lower surface of strip meets dephosphorization requirement.
Claims (3)
1. a kind of hot-strip high-pressure water descaling system, it is characterised in that include upper header（1）, lower collector pipe（2）, upper header spray
Mouth（3）, lower collector pipe nozzle（4）, upper header inlet channel（6）, lower collector pipe inlet channel（7）With high pressure water main pipeline（9）, upper collection
Pipe（1）And lower collector pipe（2）Parallel arrangement up and down, upper header（1）And lower collector pipe（2）On be respectively equipped with upper header spray positioned opposite
Mouth（3）With lower collector pipe nozzle（4）, the upper header nozzle（3）Flow be more than lower collector pipe nozzle（4）Flow, upper header（1）
And lower collector pipe（2）Pass through upper header inlet channel respectively（6）With lower collector pipe inlet channel（7）With high pressure water main pipeline（8）Connection.
A kind of 2. hot-strip high-pressure water descaling system according to claim 1, it is characterised in that the upper header nozzle
（3）Flow be lower collector pipe nozzle（4）1.1~1.8 times of flow.
A kind of 3. hot-strip high-pressure water descaling system according to claim 1 or 2, it is characterised in that the upper header
（1）Diameter be more than lower collector pipe（2）Diameter, upper header inlet channel（6）Diameter be more than lower collector pipe inlet channel（7）It is straight
Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427638.9U CN207494216U (en) | 2017-10-31 | 2017-10-31 | A kind of hot-strip high-pressure water descaling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427638.9U CN207494216U (en) | 2017-10-31 | 2017-10-31 | A kind of hot-strip high-pressure water descaling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207494216U true CN207494216U (en) | 2018-06-15 |
Family
ID=62502791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721427638.9U Active CN207494216U (en) | 2017-10-31 | 2017-10-31 | A kind of hot-strip high-pressure water descaling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207494216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139267A (en) * | 2020-08-05 | 2020-12-29 | 邯郸钢铁集团有限责任公司 | Q550D high-strength medium plate straightening and blowing device and straightening method thereof |
| CN113198857A (en) * | 2021-04-14 | 2021-08-03 | 首钢集团有限公司 | Method for improving quality consistency of upper surface and lower surface of strip steel |
-
2017
- 2017-10-31 CN CN201721427638.9U patent/CN207494216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139267A (en) * | 2020-08-05 | 2020-12-29 | 邯郸钢铁集团有限责任公司 | Q550D high-strength medium plate straightening and blowing device and straightening method thereof |
| CN113198857A (en) * | 2021-04-14 | 2021-08-03 | 首钢集团有限公司 | Method for improving quality consistency of upper surface and lower surface of strip steel |
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