CN109794521B - Strong quick cooling device for water penetration of rod and wire - Google Patents
Strong quick cooling device for water penetration of rod and wire Download PDFInfo
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- CN109794521B CN109794521B CN201910107647.7A CN201910107647A CN109794521B CN 109794521 B CN109794521 B CN 109794521B CN 201910107647 A CN201910107647 A CN 201910107647A CN 109794521 B CN109794521 B CN 109794521B
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Abstract
The invention discloses a strong quick cooling device for water penetration of a rod and a wire. The device comprises variable cross-section pipeline units, wherein each variable cross-section pipeline unit at least comprises a contraction section pipe with a cycloid generatrix and/or an expansion section pipe with a cycloid generatrix. The invention has the main purpose that the temperature of the rod and wire can be rapidly reduced in the online water passing process. The powerful rapid cooling device can be formed by splicing a plurality of basic units in series at will through an actual cooling process, is convenient to install, and obviously improves the cooling capacity compared with a device with a traditional venturi structure.
Description
Technical Field
The invention belongs to the field of on-line heat treatment of hot-rolled high-speed bars and wires, and particularly relates to an ultra-fast water-through forced cooling device for hot-rolled bars and wires.
Background
The through water cooling of hot rolled rod and wire is one modern on-line heat treatment process, and can control, improve and raise the structure performance and mechanical performance of rod and wire effectively, save noble alloy element consumption, raise production efficiency and lower production cost. The current common online through-water heat treatment method is a strong cold water tank with a venturi structure, namely: the inner contraction and expansion section of the venturi is conical. But the cooling capacity of this structure is not fully utilized. In order to further improve the rapid cooling capacity, the internal structure of the cooling water pipe is improved to form the current water-through forced cooling device.
Disclosure of Invention
Aiming at the problems, the invention provides the powerful fast cooling device for the water penetration of the rod and the wire, which not only can obviously improve the fast cooling capacity of the water penetration process of the rod and the wire, but also can select a corresponding number of powerful fast cooling basic units to be connected in series and spliced into the powerful fast cooling device according to the online heat treatment process (the diameter, the rolling speed and the tissue composition of the rod and the wire), and is very convenient to install.
In order to achieve the purpose, the strong rapid cooling device for the water penetration of the rod and wire comprises a variable cross-section pipeline unit, wherein each variable cross-section pipeline unit at least comprises a contraction section pipe with a cycloid generatrix and/or an expansion section pipe with a cycloid generatrix.
Preferably, the variable cross-section pipeline unit is composed of a contraction section pipe with a cycloid bus, a straight pipe cylindrical throat pipe and an expansion section pipe with a cycloid bus.
Preferably, the parameters of the variable cross-section pipeline unit are as follows:
if the diameter of the rolled piece is D, the diameter range of the throat is 1.6D-2D;
if the length of the throat pipe is L, the length of the contracted pipe is LS＝1.2L～1.5L；
If the length of the throat pipe is L, the length of the expansion section pipe is LK＝0.75L～0.85L；
The cycloid equation is:
the parameters of the cycloid equation of the contraction tube are as follows: r is 2Ls/π，0≤θ≤π/2；
The parameters of the cycloid equation of the expanding section pipe are as follows: r is 2Lk/π，0≤θ≤π/2。
In the device, cooling medium water flows in from one end of the contraction section, flows through the contraction section and the throat position to accelerate, flows out from the expansion section, and forms a strong turbulent flow zone in the expansion section, so that a steam film on the surface of the rod wire can be damaged, and the convection heat transfer can be enhanced; the warmed fluid medium flows out of the cooling water box through the expansion section. The powerful rapid cooling device can be formed by splicing a plurality of basic units in series at will through an actual cooling process, is convenient to install, and obviously improves the cooling capacity compared with a device with a traditional venturi structure.
Drawings
FIG. 1 is a schematic cross-sectional view of the basic unit of the apparatus of the present invention;
FIG. 2 is a water-through strong rapid cooling device for a rod wire, which is formed by connecting and splicing a plurality of sections of basic unit cooling pipes in series.
In the figure, 1, an expansion segment cycloid; 2, an expansion section; 3, a throat pipe; 4, a contraction section cycloid; 5 shrinkage section
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
As shown in figure 1 and figure 2, the strong quick cooling device for the water penetration of the rod and wire comprises a variable cross-section pipeline unit, wherein each variable cross-section pipeline unit at least comprises a contraction section pipe with a cycloid generatrix and an expansion section pipe with a cycloid generatrix.
As a further improvement of the invention, the variable-section pipeline unit consists of a contraction section pipe with a cycloidal bus, a straight pipe cylindrical throat pipe and an expansion section pipe with a cycloidal bus.
As a further improvement of the invention, the parameters of the variable cross-section pipeline unit are as follows:
if the diameter of the rolled piece is D, the diameter range of the throat is 1.6D-2D;
if the length of the throat pipe is L, the length of the contracted pipe is LS＝1.2L～1.5L；
If the length of the throat pipe is L, the length of the expansion section pipe is LK＝0.75L～0.85L；
The cycloid equation is:
the parameters of the cycloid equation of the contraction tube are as follows: r is 2Ls/π，0≤θ≤π/2；
The parameters of the cycloid equation of the expanding section pipe are as follows: r is 2Lk/π，0≤θ≤π/2。
When the device is used, cooling medium water flows in from one end of the contraction section, flows through the contraction section and the throat position to accelerate, flows out from the expansion section, and forms a strong turbulent flow zone in the expansion section, so that a steam film on the surface of the rod wire can be damaged, and the convection heat transfer can be enhanced; the warmed fluid medium flows out of the cooling water box through the expansion section. As shown in FIG. 2, the invention can be formed by splicing a plurality of basic units in series arbitrarily selected by the actual cooling process, and is convenient to install. Compared with the traditional device with a venturi structure, the cooling capacity is obviously improved.
Claims (2)
1. The powerful rapid cooling device for the water penetration of the rod and the wire is characterized by comprising variable cross-section pipeline units, wherein each variable cross-section pipeline unit at least comprises a contraction section pipe with a cycloid bus and/or an expansion section pipe with a cycloid bus; the parameters of the variable-section pipeline unit are as follows:
if the diameter of the rolled piece is D, the diameter range of the throat is 1.6D-2D;
if the length of the throat pipe is L, the length of the contracted pipe is LS＝1.2L～1.5L；
If the length of the throat pipe is L, the length of the expansion section pipe is LK＝0.75L～0.85L；
The cycloid equation is:
the parameters of the cycloid equation of the contraction tube are as follows: r is 2Ls/π，0≤θ≤π/2；
The parameters of the cycloid equation of the expanding section pipe are as follows: r is 2Lk/π，0≤θ≤π/2。
2. The strong quick cooling device for the water penetration of the bar wire rod as claimed in claim 1, wherein the variable cross-section pipeline unit is composed of a contraction section pipe with a generatrix of cycloid, a straight cylindrical throat pipe and an expansion section pipe with a generatrix of cycloid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107647.7A CN109794521B (en) | 2019-01-31 | 2019-01-31 | Strong quick cooling device for water penetration of rod and wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107647.7A CN109794521B (en) | 2019-01-31 | 2019-01-31 | Strong quick cooling device for water penetration of rod and wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109794521A CN109794521A (en) | 2019-05-24 |
| CN109794521B true CN109794521B (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910107647.7A Active CN109794521B (en) | 2019-01-31 | 2019-01-31 | Strong quick cooling device for water penetration of rod and wire |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE942685C (en) * | 1948-10-02 | 1956-05-03 | Schloemann Ag | Cooling device on metal extrusion presses |
| GB843619A (en) * | 1956-07-20 | 1960-08-04 | John A Roebling S Sons Corp | Apparatus for heat-treating rapidly moving hot-rolled rod |
| CN2524851Y (en) * | 2001-08-22 | 2002-12-11 | 任吉堂 | Strong through water cooler for hot rolling rod line material production line |
| CN205673383U (en) * | 2016-04-25 | 2016-11-09 | 山东钢铁股份有限公司 | A kind of cooler for rolling bar |
| CN206199885U (en) * | 2016-11-28 | 2017-05-31 | 北京京诚瑞信长材工程技术有限公司 | A kind of turbulence type cooling nozzles |
| CN206911943U (en) * | 2017-03-27 | 2018-01-23 | 江苏星科冶金机械制造有限公司 | A kind of four line annealing device Venturi tubes |
-
2019
- 2019-01-31 CN CN201910107647.7A patent/CN109794521B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE942685C (en) * | 1948-10-02 | 1956-05-03 | Schloemann Ag | Cooling device on metal extrusion presses |
| GB843619A (en) * | 1956-07-20 | 1960-08-04 | John A Roebling S Sons Corp | Apparatus for heat-treating rapidly moving hot-rolled rod |
| CN2524851Y (en) * | 2001-08-22 | 2002-12-11 | 任吉堂 | Strong through water cooler for hot rolling rod line material production line |
| CN205673383U (en) * | 2016-04-25 | 2016-11-09 | 山东钢铁股份有限公司 | A kind of cooler for rolling bar |
| CN206199885U (en) * | 2016-11-28 | 2017-05-31 | 北京京诚瑞信长材工程技术有限公司 | A kind of turbulence type cooling nozzles |
| CN206911943U (en) * | 2017-03-27 | 2018-01-23 | 江苏星科冶金机械制造有限公司 | A kind of four line annealing device Venturi tubes |
Non-Patent Citations (1)
| Title |
|---|
| 控制冷却工艺及装备在提高热轧钢筋强度中的应用;杨彦光等;《冶金设备》;20140715;第163-165页 * |
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| CN109794521A (en) | 2019-05-24 |
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Inventor after: Fang Shinian Inventor after: Zhang Xiangjun Inventor after: Wei Wei Inventor after: Chen Meng Inventor after: Gong Junjian Inventor after: Pu Chunlei Inventor before: Zou Changfang Inventor before: Zhang Xiangjun Inventor before: Wei Wei Inventor before: Chen Meng |
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