CN101274357B - Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling - Google Patents
Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling Download PDFInfo
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- CN101274357B CN101274357B CN2008100531378A CN200810053137A CN101274357B CN 101274357 B CN101274357 B CN 101274357B CN 2008100531378 A CN2008100531378 A CN 2008100531378A CN 200810053137 A CN200810053137 A CN 200810053137A CN 101274357 B CN101274357 B CN 101274357B
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- shower nozzle
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Abstract
The invention provides a gassy water atomization nozzle which is applicable to the secondary cooling in continuous round casting and comprises the following structure: a water inletting orifice that is connected with a water pipe and an air inletting orifice that is connected with an air pipe are arranged on a base; a nozzle head comprises a water-saving flow opening that is arranged on a back cover of the nozzle head, a spout that is arranged on a front cover of the nozzle head, and a guide plate that is arranged at the middle part between the front cover and the back cover of the nozzle head, a first gassy water mixing cavity and a second gassy water mixing cavity are respectively formed between the guide plate and the water-saving flow opening as well as between the guide plate and an end face for placing the nozzle, and an upright guide post arranged inside the second gassy water mixing cavity is connected with the guide plate; the air inletting orifice is communicated with the first gassy water mixing cavity through a channel, and the water inletting orifice is communicated with the water-saving flow opening through the channel. The gassy water atomization nozzle has the advantages of realizing multiple functions of gas and water mixing, atomization and spraying, etc. by the nozzle structure, small atomization granularity, even spraying, good effect of solid cores, stable flow control and wide flow control range, etc., and simultaneously solves the problem that the nozzle inside is hard to clean, and the nozzle head is convenient for replacing, thus ensuring the spraying effect of the nozzle for a long time.
Description
Technical field
The present invention relates to the nozzle for atomizing water with air that a kind of metallurgical round billet continuous casting field is applicable to the cooling of round billet continuous casting secondary.Have the atomizing particle degree little, spray that even, solid effect is good, flow-control stable, the flow-control scope is big, be easy to characteristics such as cleaning and replacing.Especially be used in the round base production requirement of φ 310 above specifications.
Background technology
Introduced the later stage eighties in last century Germany De Make company technology at the conticaster of steel mill, design specification is φ 210, φ 270 and φ 310 circle bases, and casting radius is 10.5 meters.In recent years owing to developed big standard round billet such as φ 350 and φ 400, low specific water's control performance of this big specification strand production requirement secondary cooling is more accurate, need nozzle to have good low discharge control performance, i.e. water atomization granularity is little, water droplet is evenly distributed, be difficult for stopping up, have high impact forces and wide-angle stream thigh.Nozzle for atomizing water with air can make the drop diameter more than 90% be lower than 0.01mm.It is very difficult that general water atomizing nozzle will make the drop diameter more than 90% be lower than 0.03mm, and when low discharge was controlled, jet hole was very little, and when flow was 1 Liter Per Minute, nozzle diameter was during less than 1.2mm, and nozzle very easily stops up.
As shown in Figure 1, the bolt connecting hole 11 ' of traditional nozzle for atomizing water with air is the connecting hole between nozzle and the ring sparger, and in production run, connecting bolt is wanted temperature distortion, and it is insecure to cause nozzle to be connected with ring sparger; Because corrosion and incrustation scale cause shower nozzle 2 ' connecting thread jam, moment of torsion increases when changing shower nozzle 2 ', meeting defective nozzle connecting bolt, make the bolt distortion, both of these case all can produce water leakage fault, reduce nozzle flow, influence the flow control accuracy of secondary cooling water, cause the flange place seepy question of nozzle for atomizing water with air.
As shown in Figure 2, the water saving head piece 5 ' of traditional nozzle for atomizing water with air is in the inside of pedestal 1 ', and it has played the effect of control discharge, be one of nozzle important structure design, this boring ratio is less, and its diameter is generally about 2mm, stop up because of incrustation very easily herein, cause nozzle not spray water.As clear up incrustation herein, cause easy obstruction and easy to clean not, atomizing particle degree and cover uniformity and be difficult to unified.Whole nozzle need be pulled down, disintegrated, very trouble is not suitable for big requirement of producing.Shown in Fig. 3 traditional sprinkler heads 2 ' structure, the water conservancy diversion column 9 ' that increases the aerosol mixed effect is arranged, but because that the excessive aerosol that causes ejection of the door diameter of water conservancy diversion column 9 ' front end exists is long hollow, cause inhomogeneous cooling even, will reduce spray angle if reduce the door diameter.The characteristics of this structure are, the jet particle degree of nozzle is little, but hollow phenomenon is serious, and the water smoke after the atomizing covers inhomogeneous; Shown in Fig. 4 conventional spout 2 ' structure, inside does not have water conservancy diversion column 9 ' structure, and the aerosol of ejection does not have hollow phenomenon, and the guide plate 7 ' in the shower nozzle has the effect that promotes the air water mixed effect, but stopped up by impurity easily because the diameter of inlet opening is too small on the weather board, and the jet particle degree is big.The characteristics of this structure are that the injection of nozzle is even, but jet particle is spent greatly easy " doing wall effect " that forms inhomogeneous cooling at casting billet surface.
Therefore, the secondary type of cooling of big specification strand is badly in need of adopting novel air water atomizing cooling technology, to adapt to the technological requirement of production, is particularly suitable for the big specification strand of low specific water's control and the production requirement of special steel.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the purpose of this invention is to provide a kind of nozzle for atomizing water with air that is applicable to the cooling of round billet continuous casting secondary, be beneficial to low specific water's round base secondary cooling control.
For achieving the above object, the technical solution used in the present invention provides a kind of nozzle for atomizing water with air that is applicable to the cooling of round billet continuous casting secondary, include pedestal, the shower nozzle that is connected with base thread, wherein: on described pedestal, be provided with the inlet opening that is connected with water pipe, the air admission hole that is connected with tracheae; Described shower nozzle comprises that the shower nozzle bonnet is provided with the water saving head piece, the shower nozzle protecgulum is provided with spout, middle part between described shower nozzle front and rear covers is provided with guide plate, forms the first air water hybrid chamber and the second air water hybrid chamber and guide plate respectively between guide plate and water saving head piece and the spout place end cap and is connected with the water conservancy diversion column that is located in the second air water hybrid chamber; Air admission hole is through the described first air water hybrid chamber of channel connection, and the inlet opening is through the described water saving head piece of channel connection.
Effect of the present invention is that structure of nozzle has solved the atomizing particle degree and the covering uniformity is difficult to unified problem, realize multi-functionals such as gas, water mixing, atomizing, injection, had characteristics such as the atomizing particle degree is little, even, the solid effect of injection is good, flow-control stable, the flow-control scope is big.Solved the not problem of easy to clean of nozzle interior simultaneously, shower nozzle is changed convenient, has improved the firmness that nozzle is connected with ring sparger, has guaranteed the jeting effect of long-time nozzle.
Description of drawings
Fig. 1 is the three-dimensional profile schematic diagram of traditional type nozzle for atomizing water with air;
Fig. 2 is a traditional type nozzle for atomizing water with air structure chart;
Fig. 3,4 is a conventional spout structure cutaway view;
Fig. 5 is the three-dimensional profile schematic diagram of nozzle for atomizing water with air of the present invention;
Fig. 6 is a nozzle for atomizing water with air understructure schematic diagram of the present invention;
Fig. 7 is a nozzle for atomizing water with air structure cutaway view of the present invention.
Among the figure:
1,1 ' pedestal 2,2 ' shower nozzle, 3,3 ' inlet opening
4,4 ' air admission hole 5,5 ' water saving head piece 6,6 ' the first air water hybrid chamber
7,7 ' swing to plate 8, the second air water hybrid chamber 9,9 ' water conservancy diversion column
10,10 ' spout 11,11 ', connecting bolt hole
The specific embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the nozzle for atomizing water with air structure of round billet continuous casting secondary cooling that is applicable to of the present invention.
The nozzle for atomizing water with air that is applicable to the cooling of round billet continuous casting secondary of the present invention shown in Fig. 5,6, includes pedestal 1, and the shower nozzle 2 that is connected with base thread is provided with the inlet opening 3 that is connected with water pipe, the air admission hole 4 that is connected with tracheae on described pedestal 1.Described shower nozzle 2 as shown in Figure 7, comprises that the shower nozzle bonnet is provided with water saving head piece 5, and protecgulum is provided with spout 10, and the middle part between described shower nozzle front and rear covers is provided with guide plate 7, evenly is provided with the rectangle surge tank of inclination in the periphery of described guide plate 7.Form the first air water hybrid chamber 6 and the second air water hybrid chamber 8 respectively between guide plate 7 and water saving head piece 5 and the spout 10 place end caps, be connected with the water conservancy diversion column 9 that is located in the second air water hybrid chamber 8 with guide plate 7.Air admission hole 4 is through the described first air water hybrid chamber 6 of channel connection, and inlet opening 3 is through the described water saving head piece 5 of channel connection.
The nozzle for atomizing water with air of round billet continuous casting secondary cooling that is applicable to of the present invention is achieved in that shown in Fig. 5,6, be applicable to the nozzle for atomizing water with air of round billet continuous casting secondary cooling, include pedestal 1, shower nozzle 2, be provided with the inlet opening 3 that is connected with water pipe, the air admission hole 4 that is connected with tracheae on described pedestal 1, water pipe and tracheae directly are welded on the pedestal 1.This mode of connection is simple, firm, durable.Concave station outside inlet opening 3 and the air admission hole 4 is the welding position for welding water pipe and tracheae reservation.
Nozzle for atomizing water with air and water inlet, tracheae are connected to form ring sparger, and this connects the employing welding manner, realize by pedestal 1, are convenient to being connected of ring sparger design and nozzle, the seepy question of having avoided original flange form to connect.The shower nozzle 2 of this nozzle arrangements adopts tubular type to connect, and connects reliably, and it is convenient to change, and nozzle interior is cleared up easily.
Consider the change of pedestal 1 mounting means, exchange has been done in the inlet opening 3 and the position of air admission hole 4.Water saving head piece 5 among Fig. 2 is shifted out from pedestal 1 inside, and be arranged on the shower nozzle 2, as shown in Figure 7, the characteristics of this structure are after nozzle is blocked by impurity, along with changing shower nozzle 2, inner tamper just can be gone out by water or be taken out of with shower nozzle, can reach the cleaning requirement fully, can guarantee the jeting effect of nozzle in for a long time.
As shown in Figure 7, the race diameter of water conservancy diversion column 9 upper barrier covers is reduced, reduce hollow length widely, when making water be ejected on the strand, do not have hollow and cover evenly.Increase guide plate 7 structures, the air water rotation is strengthened, spray angle does not change, and maximum spray angle has reached 120 degree.Make the small sircle hole of guide plate 7 into heavy in section rectangle surge tank, made nozzle be not easy to stop up, and utilize water conservancy diversion column 9 to make the water atomization granularity littler, overcome the big shortcoming of jet particle degree.
Compressed air enters from air admission hole 4, prolong passage and enter first hybrid chamber 6 in the middle of directly blowing to shower nozzle both sides pore, cooling water is entering into the first air water hybrid chamber 6 by inlet opening 3 through the water saving head piece 5 on the shower nozzle bonnet, and compressed air and cooling water are at the first air water hybrid chamber 6.Mix the back and striking on the guide plate 7 under the acting in conjunction of air pressure and hydraulic pressure, the guiding gutter spiral that prolongs on the guide plate 7 is injected to the second air water air water hybrid chamber 8.Air water stream strikes the upper barrier cover of water conservancy diversion column 9, prolongs spout 10 ejections of shower nozzle protecgulum after further mixing.These three processes have all played the effect of refinement particle water degree, and have overcome many shortcomings such as the atomizing particle degree is big, uneven, the easy obstruction of injection, and have improved low specific water's control performance.
Claims (2)
1. a nozzle for atomizing water with air that is applicable to the cooling of round billet continuous casting secondary includes pedestal, and the shower nozzle that is connected with base thread is characterized in that: be provided with the inlet opening (3) that is connected with water pipe, the air admission hole (4) that is connected with tracheae on described pedestal (1); Described shower nozzle (2) comprises that the shower nozzle bonnet is provided with water saving head piece (5), the shower nozzle protecgulum is provided with spout (10), middle part between described shower nozzle front and rear covers is provided with guide plate (7), form the first air water hybrid chamber (6) and the second air water hybrid chamber (8) respectively between guide plate (7) and water saving head piece (5) and spout (10) the place end cap, be connected with the water conservancy diversion column (9) that is located in the second air water hybrid chamber (8) with guide plate (7); Air admission hole (4) is through the described first air water hybrid chamber (6) of channel connection, and inlet opening (3) are through the described water saving head piece of channel connection (5).
2. the nozzle for atomizing water with air that is applicable to the cooling of round billet continuous casting secondary according to claim 1 is characterized in that: the rectangle surge tank that evenly is provided with inclination in the periphery of described guide plate (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100531378A CN101274357B (en) | 2008-05-15 | 2008-05-15 | Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100531378A CN101274357B (en) | 2008-05-15 | 2008-05-15 | Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling |
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| CN101274357A CN101274357A (en) | 2008-10-01 |
| CN101274357B true CN101274357B (en) | 2010-06-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328040B (en) * | 2011-07-12 | 2014-07-23 | 陈寅明 | Billet steel crystallization secondary cooling method and device |
| CN103658578A (en) * | 2013-10-30 | 2014-03-26 | 芜湖新兴铸管有限责任公司 | Continuous casting cooling jet nozzle |
| CN105081251B (en) * | 2015-09-24 | 2017-03-29 | 攀钢集团工程技术有限公司 | Fan-shaped section nozzle |
| CN106862220A (en) * | 2017-01-13 | 2017-06-20 | 江苏大学 | A kind of explosive place powder dog-house is calmed the anger low pressure water jet dust suction dust arrester |
| CN108342551A (en) * | 2018-03-08 | 2018-07-31 | 马鞍山钢铁股份有限公司 | A kind of wheel quenching special-purpose combined type nozzle and its method of adjustment |
| CN111842823B (en) * | 2020-07-31 | 2024-04-30 | 中冶赛迪技术研究中心有限公司 | Anti-blocking nozzle for continuous casting secondary cooling |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201271735Y (en) * | 2008-05-15 | 2009-07-15 | 天津钢管集团股份有限公司 | Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201271735Y (en) * | 2008-05-15 | 2009-07-15 | 天津钢管集团股份有限公司 | Nozzle for atomizing water with air suitable for round billet continuous casting secondary cooling |
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Effective date of registration: 20190624 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee after: Tianjin Steel Tube Manufacturing Co., Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee before: Tianjin Steel Pipe Group Co., Ltd. |
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