CN203281618U - Cooling device for rod and wire rolled piece - Google Patents
Cooling device for rod and wire rolled piece Download PDFInfo
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- CN203281618U CN203281618U CN2013203312909U CN201320331290U CN203281618U CN 203281618 U CN203281618 U CN 203281618U CN 2013203312909 U CN2013203312909 U CN 2013203312909U CN 201320331290 U CN201320331290 U CN 201320331290U CN 203281618 U CN203281618 U CN 203281618U
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- nozzle core
- cooling device
- inlet opening
- water inlet
- rolled piece
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Abstract
The utility model discloses a cooling device for a rod and wire rolled piece. The cooling device for the rod and wire rolled piece comprises nozzle core sets. Each nozzle core set comprises a water inlet nozzle core and a flow guiding nozzle core which are communicated. A plurality of inclining water inlet holes are formed in each water inlet nozzle core. The axes of the inclining water inlet holes are gradually close to the axes of the water inlet nozzle cores in the flowing direction of media. The cooling device for the rod and wire rolled piece further comprises auxiliary water inlet holes are formed in one or more nozzle core sets and located on the water discharging side of the inclining water inlet holes, and the jetting direction of each auxiliary water inlet hole and the jetting direction of one inclining water inlet hole intersect. According to the cooling device for the rod and wire rolled piece, media jetted by the inclining water inlet holes and media jetted by the downstream auxiliary water inlet holes collide, self-excitation low-frequency oscillation is generated in the space between the nozzle core sets and the rolled piece, the oscillation is transmitted to the whole cooling device, pulsation heat exchanging is conducted on the cooling media, so that the heat exchange capacity is improved. Therefore, the cooling effect of the cooling device is improved, increase of the length of the cooling device or increase of the pressure of the cooling media is not needed, cost is reduced, and soaking distance is guaranteed.
Description
Technical field
The utility model relates to excellent wire rod rolled piece production field, particularly a kind of excellent wire rod rolled piece cooling device.
Background technology
In the rod wire production,, in order to obtain the excellent wire rod of specific physical property or metallographic structure, need to or cool to rolled piece after rolling in the intermediate link of Wire and Rod Rolling Process, therefore can use special cooler, cooling medium is commonly used water.
Rolled piece is lowered the temperature in cooler after, the rolled piece section temperature is inhomogeneous, the surface temperature of rolled piece is low, core temperature is high, need to be after after a while section temperature homogenising be processed, rolled piece just can carry out the rolling of follow-up passage, rolled piece section temperature homogenising process refer to rolled piece from cooler out, and carry out the natural soaking of rolled piece on one section transmission range before entering follow-up roll mill, this section transmission range is called the soaking distance.The cooling capacity of cooler is subject to the impact of the factors such as pressure and temperature of heat-exchange capacity, cooler length and the cooling water of cooler, the heat-exchange capacity of existing cooler is limited, can only improve cooling effect by increasing cooler length and cooling water pressure, increased the operating cost of excellent wire rod production line, simultaneously, because excellent wire production line length is certain, increasing cooler length certainly will the corresponding soaking distance that reduces, and is unfavorable for that the evenly heating of rolled piece section processes.
In sum, how to solve as improving the cooling capacity of cooler, can only increase by the operating cost that increases the excellent wire rod production line that cooler length or pressure cooling medium cause, and soaking is those skilled in the art's problem demanding prompt solutions apart from the problem of deficiency.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of excellent wire rod rolled piece cooling device, improve the cooling capacity of cooling device with the heat-exchange capacity by improving cooling device, thereby reduce the operating cost of excellent wire rod production line, guarantee enough soaking distances.
For achieving the above object, the utility model provides following technical scheme:
A kind of excellent wire rod rolled piece cooling device, comprise the nozzle core group, and described nozzle core group comprises water inflow nozzle core and the water conservancy diversion nozzle core of connection; Offer a plurality of oblique inlet openings on described water inflow nozzle core, the axis of described oblique inlet opening along the media flow direction gradually near the axis of described water inflow nozzle core;
Also comprise the auxiliary inlet opening that is arranged on one or more described nozzle core groups and is positioned at the water outlet side of described oblique inlet opening, the injection direction of described auxiliary inlet opening and the injection direction of described oblique inlet opening intersect.
Preferably, in above-mentioned cooling device, the number of described nozzle core group is two.
Preferably, in above-mentioned cooling device, described auxiliary inlet opening only is arranged near on a bell-mouthed described nozzle core group of described cooling device.
Preferably, in above-mentioned cooling device, the injection direction of described auxiliary inlet opening is vertical with the axis of described water inflow nozzle core.
Preferably, in above-mentioned cooling device, described auxiliary inlet opening is the annular inlet opening that is positioned on the circumferencial direction of described nozzle core group.
Preferably, in above-mentioned cooling device, described auxiliary inlet opening is the annular gap between described water inflow nozzle core and described water conservancy diversion nozzle core.
Preferably, in above-mentioned cooling device, the width of described annular gap is 1mm～5mm.
Preferably, in above-mentioned cooling device, described oblique inlet opening is evenly distributed on a circumference of described water inflow nozzle core.
Preferably, in above-mentioned cooling device, the number of described oblique inlet opening is 6～9.
Compared with prior art, the beneficial effects of the utility model are:
the excellent wire rod rolled piece cooling device that the utility model provides, rolled piece passes through in cooling device, cooling medium is spurted into the nozzle core group by the oblique inlet opening on the water inflow nozzle core and the auxiliary inlet opening that is arranged in the water outlet side of oblique nozzle core respectively, because the injection direction of the injection direction of assisting inlet opening and oblique inlet opening is crossing, the cooling medium generation impact that sprays in the cooling medium that sprays in oblique inlet opening and auxiliary inlet opening, produce the self-excitation low-frequency oscillation of cooling medium in nozzle core group and the formed medium free air space of rolled piece, and vibration is delivered in whole cooling device, increased the pulsation heat exchange of cooling medium on the basis of the existing type of cooling, greatly improved the heat-exchange capacity of cooling device, and then improved the cooling capacity of cooling device, the pressure that need not the length by increasing cooling device or increase cooling medium strengthens the cooling effect of cooling device, therefore reduced the operating cost of excellent wire rod production line, be conducive to simultaneously the prolongation of soaking distance, strengthened the evenly heating effect of rolled piece section.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or scheme of the prior art, below will accompanying drawing that describe required use in embodiment or prior art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of excellent wire rod rolled piece that Fig. 1 provides for the utility model embodiment structural representation of cooling device;
A kind of excellent wire rod rolled piece that Fig. 2 provides for the utility model embodiment structural representation of the nozzle core group of cooling device.
In above-mentioned Fig. 1 and Fig. 2, horn mouth 1, nozzle core group 2, water inflow nozzle core 21, oblique inlet opening 211, water conservancy diversion nozzle core 22, auxiliary inlet opening 23, nozzle housing 3, turbulent pipe assembly 4, exclusion water assembly 5.
The specific embodiment
The utility model provides a kind of excellent wire rod rolled piece cooling device, improved the heat-exchange capacity of cooling device, thereby do not need by the length that increases cooling device and the cooling capacity that cooling water pressure improves cooling device, reduce the operating cost of excellent wire rod production line, guaranteed enough soaking distances.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills obtain under the prerequisite of not making creative work all other embodiment, belong to the scope that the utility model is protected.
Please refer to Fig. 1 and Fig. 2, a kind of excellent wire rod rolled piece that Fig. 1 provides for the utility model embodiment structural representation of cooling device; A kind of excellent wire rod rolled piece that Fig. 2 provides for the utility model embodiment structural representation of the nozzle core group of cooling device.
The utility model embodiment provides a kind of excellent wire rod rolled piece cooling device,, hereinafter to be referred as cooling device, mainly comprises horn mouth 1, nozzle housing 3, nozzle core group 2, turbulent pipe assembly 4 and group draining assembly 5; Wherein, horn mouth 1 is the intake channel of rolled piece; The effect of nozzle housing 3 is fixed nozzle core groups 2, forms simultaneously the water supply cavity between nozzle housing 3 and nozzle core group 2; Nozzle core group 2 comprises water inflow nozzle core 21 and water conservancy diversion nozzle core 22, water inflow nozzle core 21 are connected with the water conservancy diversion nozzle core pairing connect and be communicated with; Offer a plurality of oblique inlet openings 211 on water inflow nozzle core 21, the axis of oblique inlet opening 211 along cooling medium the flow direction in cooling device close to the axis of water inflow nozzle core 21 gradually, be that the injection direction of oblique inlet opening 211 and the axis of water inflow nozzle core 21 form angle, and the injection direction of oblique inlet opening 211 is consistent with the transmission direction of rolled piece generally; Be provided with auxiliary inlet opening 23 on nozzle core group 2, auxiliary inlet opening 23 is positioned at the water outlet side of oblique inlet opening 211, and the injection direction of the injection direction of auxiliary inlet opening 23 and oblique inlet opening 211 intersects, purpose is for the cooling medium that sprays in the auxiliary inlet opening 23 of the cooling medium that makes ejection in oblique inlet opening 211 and downstream bumps, and produces low-frequency oscillation.
the operation principle of above-mentioned cooling device is: rolled piece enters in cooling device through horn mouth 1, and with certain speed transmission, in the process of rolled piece transmission, cooling medium is ejected in nozzle core group 2 by the oblique inlet opening 211 on water inflow nozzle core 21 from nozzle housing 3, and flow in turbulent pipe assembly 4, the flow direction of medium is identical generally with the moving direction of rolled piece, meanwhile, cooling medium is spurted in nozzle core group 2 by auxiliary inlet opening 23, because the injection direction of the injection direction of assisting inlet opening 23 and oblique inlet opening 211 is crossing, so, eject in the cooling medium that ejects from oblique inlet opening 211 and downstream from auxiliary inlet opening 23 cooling medium bumps, produce the self-excitation low-frequency oscillation of cooling medium in the space that forms between nozzle core group 2 and rolled piece, the self-excitation low-frequency oscillation is delivered in cooling medium in whole cooling device, and the space between nozzle core group 2 and rolled piece becomes self-excitation low-frequency oscillation source.The self-excitation low-frequency oscillation makes cooling medium produce pulsation, and the heat-transfer effect between cooling medium and rolled piece has been strengthened in pulsation, the principle of fluid pulsation augmentation of heat transfer effect mainly comprises: a, pulsation have changed the flow field in the cooling device, thereby changed the temperature field of the fluid in the cooling device, make the thermograde at fluid and heat-exchange surface place that variation occur, cause the change of heat convection; The laminar sublayer of fluid is introduced forced-convection heat transfer in b, pulsation; In constant flow field, heat is by heat conducting mode across-layer laminar sublayer, convection current is very little for the impact of laminar sublayer, but after constant flow field is applied pulsation, the pressure of pulsation produces periodic radial undulation near making laminar sublayer and core flow boundary, can think that fluid has produced periodic Radial Flow in small scope, thereby radially produce forced-convection heat transfer; C, pulsation promote the diffusion of vortex; The center main flow fluid velocity in flow field is large and velocity gradient is less, and the flow velocity of the fluid at close heat-exchange surface viscous sublayer place has very large velocity gradient far below the speed of center main flow fluid, and therefore viscous force cuts much ice in viscous sublayer; When rate of flow of fluid increases gradually, Jiao Dade center flow velocity and variation thereof will cause in the edge of viscous sublayer similar " volume seat " phenomenon, form larger-size a large amount of vortex, effect due to viscous force, vortex resolves into the vortex of reduced size in motion process, and in the effect Xia Xiang center diffusion of bore to vortex concentration difference and fluid pulsation pressure, this process has promoted the blending between core flow and heat-exchange surface place fluid, increase the heat transmission of edge fluid and core flow, improved convection transfer rate.
To sum up, on the basis of the type of cooling that has cooling device now, make cooling medium that the pulsation heat exchange occur by increasing the self-excitation low-frequency oscillation, thereby greatly strengthen the heat-exchange capacity of cooling device, therefore, do not need the pressure of length by increasing cooling device or cooling water in the cooling capacity that improves cooling device, thereby reduced on the whole the operating cost of excellent wire rod production line; And, even can process longer soaking length is provided for the evenly heating of rolled piece section by shortening the length of cooling device, improve equal thermal effect.
Cooling device is optimized, the number of the nozzle core group 2 in the present embodiment is preferably two groups, wherein, the structure of the water inflow nozzle core 21 of two nozzle core groups 2 is slightly different, difference is that the water inflow nozzle core of the nozzle core group of close horn mouth 1 also is provided with the connecting portion that is connected with horn mouth, and the structure of the water conservancy diversion nozzle core 22 of two nozzle core groups 2 can be identical; Adopt two nozzle core groups 2 can meet the demand and supply of cooling medium, more be conducive to produce simultaneously the self-excitation low-frequency oscillation; Certainly, can also adopt one or more nozzle core group 2, at this, be not specifically limited.
As optimization, when adopting two nozzle core groups 2,23 of auxiliary inlet openings in the present embodiment arrange one, and be arranged near on a nozzle core group 2 at horn mouth 1 place, like this, make self-excitation low-frequency oscillation source be positioned at the beginning position of cooling device, the cooling medium that more is conducive to whole cooling device produces the self-excitation low frequency oscillation, further strengthens cooling effect; Certainly, can also change according to the actual requirements number and the position of auxiliary inlet opening 23.
In order to realize better the self-excitation low-frequency oscillation of cooling medium, the injection direction of the auxiliary inlet opening 23 in the present embodiment is vertical with the axis of water inflow nozzle core 21, make the cooling medium that sprays from oblique inlet opening 211 and the cooling medium that radially sprays from auxiliary inlet opening 23 more effectively collide, and then be conducive to the generation of self-excitation low-frequency oscillation; Except adopting vertical setting, can also select other angle, as long as can realize that the fluid that sprays in the fluid that sprays in oblique inlet opening 211 and auxiliary inlet opening 23 bumps, the angle between the axis of oblique inlet opening 211 and water inflow nozzle core 21 is 30 °～45 °.
The present embodiment is optimized auxiliary inlet opening 23, auxiliary inlet opening 23 is the annular inlet opening on a circumferencial direction that is positioned at nozzle core group 2, the purpose that adopts loop configuration is in order to make the fluid that sprays in auxiliary inlet opening 23 form fluid level, the effect of enhance fluid collision; Certainly, in addition, auxiliary inlet opening 23 can also be that the circumferencial direction along nozzle core group 2 arranges a plurality of independent inlet openings, and the shape of inlet opening can be other shape such as circular, square.
Further, auxiliary inlet opening 23 be the annular gap between water inflow nozzle core 21 and water conservancy diversion nozzle core 22, and annular gap self-assembling formation when being installed into (operating) water nozzle core 21 and water conservancy diversion nozzle core 22, do not need additional processing to go out inlet opening, and is easy to operate; In addition, auxiliary inlet opening 23 can also be offered separately on water inflow nozzle core 21 or water conservancy diversion nozzle core 22, the effect of self-excitation low-frequency oscillation can be formed equally.
Annular gap is optimized, the width of the annular gap in the present embodiment is in 1mm～5mm scope, at this moment formed self-excitation low-frequency oscillation best results,, certainly according to the dimensional structure of different nozzle core groups 2, can select the width of other suitable annular gap.
Oblique inlet opening 211 in the utility model embodiment is evenly distributed on a circumference of water inflow nozzle core 21, makes injection more even, more is conducive to the generation of self-excitation low-frequency oscillation.
As optimization, the number of oblique inlet opening 211 is 6～9; More preferably, the number of oblique inlet opening 211 is 8, and the diameter of oblique inlet opening 211 is 10mm; Certainly, determine number and the size of oblique inlet opening 211 according to the size of cooling device, at this, be not specifically limited.
, to the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, realization in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an excellent wire rod rolled piece cooling device, comprise nozzle core group (2), and described nozzle core group (2) comprises water inflow nozzle core (21) and the water conservancy diversion nozzle core (22) of connection; Offer a plurality of oblique inlet openings (211) on described water inflow nozzle core (21), the axis of described oblique inlet opening (211) along the media flow direction gradually near the axis of described water inflow nozzle core (21);
It is characterized in that, also comprise the auxiliary inlet opening (23) that is arranged at one or more described nozzle core groups (2) upward and is positioned at the water outlet side of described oblique inlet opening (211), the injection direction of the injection direction of described auxiliary inlet opening (23) and described oblique inlet opening (211) intersects.
2. cooling device according to claim 1, is characterized in that, the number of described nozzle core group (2) is two.
3. cooling device according to claim 2, is characterized in that, described auxiliary inlet opening (23) only is arranged on a described nozzle core group (2) near the horn mouth (1) of described cooling device.
4. cooling device according to claim 1, is characterized in that, the injection direction of described auxiliary inlet opening (23) is vertical with the axis of described water inflow nozzle core (21).
5. cooling device according to claim 1, is characterized in that, described auxiliary inlet opening (23) is the annular inlet opening on the circumferencial direction that is positioned at described nozzle core group (2).
6. cooling device according to claim 5, is characterized in that, described auxiliary inlet opening (23) is the annular gap between described water inflow nozzle core (21) and described water conservancy diversion nozzle core (22).
7. cooling device according to claim 6, is characterized in that, the width of described annular gap is 1mm～5mm.
8. cooling device according to claim 1, is characterized in that, described oblique inlet opening (211) is evenly distributed on a circumference of described water inflow nozzle core (21).
9. cooling device according to claim 8, is characterized in that, the number of described oblique inlet opening (211) is 6～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203312909U CN203281618U (en) | 2013-06-08 | 2013-06-08 | Cooling device for rod and wire rolled piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203312909U CN203281618U (en) | 2013-06-08 | 2013-06-08 | Cooling device for rod and wire rolled piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203281618U true CN203281618U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203312909U Withdrawn - After Issue CN203281618U (en) | 2013-06-08 | 2013-06-08 | Cooling device for rod and wire rolled piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203281618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264055A (en) * | 2013-06-08 | 2013-08-28 | 莱芜钢铁集团有限公司 | Cooling device for rod wire rolled piece |
| CN107282683A (en) * | 2017-07-03 | 2017-10-24 | 重庆泰山电缆有限公司 | A kind of aluminum-extruding machine cooling system for being exclusively used in cable production |
-
2013
- 2013-06-08 CN CN2013203312909U patent/CN203281618U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264055A (en) * | 2013-06-08 | 2013-08-28 | 莱芜钢铁集团有限公司 | Cooling device for rod wire rolled piece |
| CN103264055B (en) * | 2013-06-08 | 2015-07-08 | 莱芜钢铁集团有限公司 | Cooling device for rod wire rolled piece |
| CN107282683A (en) * | 2017-07-03 | 2017-10-24 | 重庆泰山电缆有限公司 | A kind of aluminum-extruding machine cooling system for being exclusively used in cable production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131113 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |