CN201033333Y - Strip steel coiling temperature control device - Google Patents
Strip steel coiling temperature control device Download PDFInfo
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- CN201033333Y CN201033333Y CNU2006201757109U CN200620175710U CN201033333Y CN 201033333 Y CN201033333 Y CN 201033333Y CN U2006201757109 U CNU2006201757109 U CN U2006201757109U CN 200620175710 U CN200620175710 U CN 200620175710U CN 201033333 Y CN201033333 Y CN 201033333Y
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- cooling zone
- strip
- coiling temperature
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Abstract
The utility model relates to a strip coiling temperature control device, belonging to the technical field of rolled coiling temperature control, which comprises a cooling area and a computer control system; wherein the cooling area is composed of an upper laminar header and a lower injection header. The utility model is characterized in that: the cooling area is divided into a main cooling section and a fine cooling section; a temperature measuring device is arranged respectively at the end of the fine cooling section, the connection of the main cooling section and the fine cooling section, and the front end of the main cooling section. The utility model has the advantages that the length of the cooling area is shortened, and the number of the temperature measuring points are reduced, the impact to strip from other factors is effectively reduced; and the control precision of the strip coiling temperature is improved; the deviation of the target temperature and the actually coiling temperature of the strip cooled by the utility model is controlled within 20 DEG C; the hit rate is above 99.5%; the mechanical property of the strip products is effectively improved; at the same time, the on-line sampling amount of strip is greatly reduced.
Description
Technical field
The utility model belongs to the control technology field of steel rolling coiling temperature, relates in particular to a kind of coiling temperature control apparatus of hot-strip.
Background technology
In the hot-strip production process, the coiling temperature of hot-strip is to the institutional framework and the mechanical performance important influence of hot-strip.Hot-strip enters before the coiling machine after leaving finishing mill, need cool off fast and accurately control hot-strip, with the strip coiling temperature of realizing ideal.
Currently used hot-strip cooling system is the water-cooling apparatus of upper layer flows collector and bottom spray header composition, record different temperatures before the strip coiling by a plurality of points for measuring temperature, by simulation to the system cools curve, the spray rate and the injection flow rate of control upper layer flows collector and bottom spray header are finished whole cooling procedure.But existing strip coiling temperature control equipment exists, and the water spray cooling zone is long, point for measuring temperature too much, complex structure and the higher shortcoming of cost.
As on July 20th, 2005 disclosed Chinese patent application 200410021048.7 provide a kind of band steel cooling facility for laminar flow and control cooling means, this device mainly is made of the cooling zone that upper stream collector and following spray header are formed, limit portion is provided with side-blown mechanism, described cooling zone comprises cold section Z of a master and a fine cold-leg J, main cold section Z and fine cold-leg J form by the bottom spray header group of a plurality of upper layer flows collector groups and respective numbers, all be provided with a by-pass valve control 1 on the every collector 4 of main cold section Z upper header group, per two collectors 5 of lower header group are provided with a by-pass valve control 3, on the fine cold-leg J, the lower header group all is by-pass valve control of a collector, it is characterized in that this cooling device by 2 have separately cold section Z of master and the cooling zone of fine cold-leg J, be that preceding cooling zone A and back cooling zone B serial connection form, its version is: cold section Z+ fine cold-leg of main cold section Z+ fine cold-leg J+ master J.Though this cooling device can be realized the computer control of strip coiling temperature, but because the cooling zone is long, increased the uncertainty of cooling factor on the contrary, point for measuring temperature is too much on the other hand, this has not only increased operation and has controlled cost, and has also increased the control difficulty accordingly.
The utility model content
The purpose of this utility model is to provide a kind of strip coiling temperature control equipment with two cooling zones and three points for measuring temperature, realizes strip coiling point accuracy control over temperature by the cooling zone that essence is short, and error is little, the accuracy height.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of strip coiling temperature control equipment, comprise cooling zone and computer control system, described cooling zone is made up of upper layer flows collector and bottom spray header, it is characterized in that, the cooling zone is divided into main cold section and fine cold-leg, and main cold section front end, cold section of master and fine cold-leg junction, fine cold-leg end are provided with temperature measuring equipment respectively.
Described cooling zone is made up of the bottom spray header of 17 groups of upper layer flows collectors and equivalent amount, and described master comprises eight groups of upper layer flows collectors and bottom spray header for cold section, and fine cold-leg is made up of other nine groups of upper layer flows collectors and bottom spray header.
Cold section edge of described master band steel traffic direction is divided into strong cooling section, inferior strong cooling zone and low three cooling zones, strong cooling zone, first and second group upper layer flows collector and bottom spray header are formed strong cooling section, form time strong cooling zone for third and fourth group, the 5th to the 8th group of upper layer flows collector and bottom spray header are formed low strong cooling zone.
The feedforward system of described temperature measuring equipment and computer control system links, and computer control system also links with the water spray control device and the strip coiling drive unit of upper layer flows collector and bottom spray header.
This strip coiling temperature control equipment is arranged on the finishing mill rear end, the band steel is the cooling zone that level enters this coiling temperature control apparatus, main cold section front end, promptly be with the steel porch to be provided with a temperature measuring equipment, initial temperature to the band steel is measured, traffic direction along the band steel, be distributed with main cold section strong cooling section successively, inferior strong cooling section and low strong cooling section, strong cooling section first, the injection flow rate and the water-jet velocity maximum of two groups of upper layer flows collectors and bottom spray header, be the caliber maximum, the upper layer flows collector of inferior strong cooling section and low strong cooling section and the injection flow rate and the water-jet velocity of bottom spray header reduce successively.The upper layer flows collector of fine cold-leg and the injection flow rate of bottom spray header and water-jet velocity minimum, it is mainly used in meticulous adjustment, and the result who is used for main cold section finely tunes.
Also comprise computer control system in this strip coiling temperature control equipment, this system mainly comprises: a computer-internal is set computation model, is used for setting value and controlling parameter and carry out FEEDFORWARD CONTROL; Three temperature measuring equipments, be separately positioned on main cold section foremost, the main cold section end with fine cold-leg joint, fine cold-leg, be used for the mensuration of temperature value; The control system operation steps is as follows: at first calculate setting value and control parameter, according to the requirement of control mode, calculate initial set value and control parameter such as finishing temperature, medium temperature by computer model, coiling temperature, the reference value of injection flow rate and strip coiling speed; Temperature measuring equipment feeds back to model at any time with the finishing temperature of being surveyed before medium temperature and the coiling temperature, compares with setting value, if any deviation, then repeat aforementioned calculation, revise cooling scheme, compensate setting value, with the realization of assurance setting value and the raising of chilling temperature control accuracy.The said temperature control procedure is the calculating of one-period for whole setting and control parameter, and it is based on the measured value in the specific band steel cooling procedure, and therefore whole process is a closed-loop system.
The beneficial effects of the utility model are, the cooling zone contraction in length of this strip coiling temperature control equipment, point for measuring temperature reduces, effectively reduced the influence of other factors to the cooling of band steel, improved the strip coiling control accuracy of temperature, the actual coiling temperature of band steel of this strip coiling temperature control equipment cooling of process and the Deviation Control of target temperature are in 20 ℃, hit rate is more than 99.5%, effectively raise the mechanical performance of belt steel product, also significantly reduced the online sample size of band steel simultaneously.
Description of drawings
Below with reference to drawings and Examples strip coiling temperature control equipment of the present invention is further described.
Fig. 1 is the schematic diagram of cooling zone in the strip coiling temperature control equipment of the present invention;
Fig. 2 is the schematic diagram of strip coiling temperature control equipment of the present invention.
The specific embodiment
As shown in Figure 1, strip coiling temperature control equipment cooling zone mainly is made up of the bottom spray header of 17 groups of upper layer flows collectors and respective numbers, and described cooling zone is formed by cold section of master and two cooling zones serial connections of fine cold-leg.Main cooling zone includes eight groups of water spray collectors, and first and second group water spray collector is strong cooling section a, and the third and fourth water spray collector consists of time strong cooling zone b, and the 5th to the 8th water spray collector is formed low strong cooling zone c.Fine cold-leg is made up of nine groups of water spray collectors, mainly the chilling temperature that batches to the band steel carries out trickle adjustment, be provided with at main cold section front end, cold section of soil and fine cold-leg junction, fine cold-leg end temperature measuring equipment 1,2 and 3 is set respectively, in order to the actual value of detected temperatures, this temperature value that records is as preceding feedforward parameter.
As shown in Figure 2, also comprise a temperature control feedforward system in the strip coiling temperature control equipment.This system mainly comprises: the computer of a built-in computation model, set original control parameter according to the band steel property calculation that will cool off.When this hot-strip enters the laminar flow cooling stage, computer calculates and sets the initial parameter in this hot pressing steel cooling procedure according to computation model, mainly comprise the injection flow rate size of the water spray collector of main cold section and each cooling zone of fine cold-leg in the cooling zone and the parameters such as coiling speed of hot-rolled steel.Three temperature measuring equipments are separately positioned on the Duan Kouchu of cold section of master in the cooling zone, on cold section of soil and fine cold-leg connecting place and the fine cold-leg ending segment mouth, are used for measuring finishing temperature in the hot-rolled steel cooling procedure medium temperature and coiling temperature.
Claims (4)
1. strip coiling temperature control equipment, comprise cooling zone and computer control system, described cooling zone is made up of upper layer flows collector and bottom spray header, it is characterized in that, the cooling zone is divided into main cold section and fine cold-leg, and main cold section front end, cold section of master and fine cold-leg junction, fine cold-leg end are provided with temperature measuring equipment is set respectively.
2. a kind of strip coiling temperature control equipment according to claim 1, it is characterized in that, described cooling zone is made up of the bottom spray header of 17 groups of upper layer flows collectors and equivalent amount, described master comprises eight groups of upper layer flows collectors and bottom spray header for cold section, and fine cold-leg is made up of other nine groups of upper layer flows collectors and bottom spray header.
3. a kind of strip coiling temperature control equipment according to claim 1, it is characterized in that cold section edge of described master band steel traffic direction is divided into strong cooling section, inferior strong cooling zone and low three cooling zones, strong cooling zone, first and second group upper layer flows collector and bottom spray header are formed strong cooling section, form time strong cooling zone for third and fourth group, the 5th to the 8th group of upper layer flows collector and bottom spray header are formed low strong cooling zone.
4. a kind of strip coiling temperature control equipment according to claim 1, the feedforward system that it is characterized in that described temperature measuring equipment and computer control system links, and computer control system also links with the water spray control device and the strip coiling drive unit of upper layer flows collector and bottom spray header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201757109U CN201033333Y (en) | 2006-12-22 | 2006-12-22 | Strip steel coiling temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201757109U CN201033333Y (en) | 2006-12-22 | 2006-12-22 | Strip steel coiling temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201033333Y true CN201033333Y (en) | 2008-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201757109U Expired - Fee Related CN201033333Y (en) | 2006-12-22 | 2006-12-22 | Strip steel coiling temperature control device |
Country Status (1)
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| CN (1) | CN201033333Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784807A (en) * | 2011-05-20 | 2012-11-21 | 宝山钢铁股份有限公司 | Method and device for real-timely measuring temperature of moving high temperature steel plate in water cooling area |
| CN105522004A (en) * | 2014-09-30 | 2016-04-27 | 上海梅山钢铁股份有限公司 | Control and statistical method for ship-shaped rolling temperature precision of hot-rolled strip steel |
| CN106513445A (en) * | 2016-10-14 | 2017-03-22 | 山西太钢不锈钢股份有限公司 | Hot continuous rolled strip steel coiling dual detection method |
| CN110877055A (en) * | 2019-10-31 | 2020-03-13 | 河钢股份有限公司承德分公司 | Method for improving hot-rolled steel strip tail coiling temperature hit |
-
2006
- 2006-12-22 CN CNU2006201757109U patent/CN201033333Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784807A (en) * | 2011-05-20 | 2012-11-21 | 宝山钢铁股份有限公司 | Method and device for real-timely measuring temperature of moving high temperature steel plate in water cooling area |
| CN102784807B (en) * | 2011-05-20 | 2014-12-24 | 宝山钢铁股份有限公司 | Method and device for real-timely measuring temperature of moving high temperature steel plate in water cooling area |
| CN105522004A (en) * | 2014-09-30 | 2016-04-27 | 上海梅山钢铁股份有限公司 | Control and statistical method for ship-shaped rolling temperature precision of hot-rolled strip steel |
| CN106513445A (en) * | 2016-10-14 | 2017-03-22 | 山西太钢不锈钢股份有限公司 | Hot continuous rolled strip steel coiling dual detection method |
| CN110877055A (en) * | 2019-10-31 | 2020-03-13 | 河钢股份有限公司承德分公司 | Method for improving hot-rolled steel strip tail coiling temperature hit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |