JPS6020090B2 - Cooling water injection device for plate materials - Google Patents

Cooling water injection device for plate materials

Info

Publication number
JPS6020090B2
JPS6020090B2 JP54127893A JP12789379A JPS6020090B2 JP S6020090 B2 JPS6020090 B2 JP S6020090B2 JP 54127893 A JP54127893 A JP 54127893A JP 12789379 A JP12789379 A JP 12789379A JP S6020090 B2 JPS6020090 B2 JP S6020090B2
Authority
JP
Japan
Prior art keywords
water
cooling
way valve
water injection
header
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP54127893A
Other languages
Japanese (ja)
Other versions
JPS5653815A (en
Inventor
和夫 西村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP54127893A priority Critical patent/JPS6020090B2/en
Publication of JPS5653815A publication Critical patent/JPS5653815A/en
Publication of JPS6020090B2 publication Critical patent/JPS6020090B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、ホットストリップミルのホットランテーブル
における注水冷却装置に関し、特に捲取温度を目標の値
に高精度で的中させると同時に、この冷却コントロール
に使用される冷却水量を大中に節減させることを目的と
してなされたものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a water injection cooling device for a hot run table of a hot strip mill. This was done with the aim of reducing the amount of cooling water used for control.

（従来技術） 一般にホットストリップミルの圧延はストリップのトッ
プが仕上圧延機を出るとホットランテーブル上を走行し
、捲取機により巻取るが、この際の捲取温度はストリッ
プの品質に大きな影響をもつので、前記ホットランテー
ブルのストリップ上下面から注水冷却を行なって、設定
された温度になるように制御している。(Prior art) In general, in hot strip mill rolling, when the top of the strip leaves the finishing mill, it runs on a hot run table and is wound up by a winding machine, but the winding temperature at this time has a great effect on the quality of the strip. Therefore, cooling is performed by injecting water from the upper and lower surfaces of the strip of the hot run table to control the temperature to a set temperature.

ところで通常ホットストリップミルの圧延はストリップ
のトップが仕上圧延機を出てホットランテーブルを走行
中は中速で移動し捲取機にストリップのトップが捲き付
いたら高速に加速して圧延するズーミング圧延を行って
おり、又圧延する板厚も１．２豚〜２５肌迄の広範囲の
板厚を圧延する。By the way, rolling in a hot strip mill usually involves zooming rolling, in which the top of the strip leaves the finishing mill and moves at a medium speed while running on the hot run table, and when the top of the strip is wound around the winding machine, it accelerates to high speed and rolls. The company also rolls a wide range of sheet thicknesses from 1.2 mm to 25 mm.

ざらに仕上出口温度、捲取温度は圧延する品種により異
っていることはよく知られている。従って注水冷却コン
トロールは、かる板厚、圧延速度、冷却温度のパターン
の違いを考慮したシステムを具備していなければならな
い。而して、従来このような注水冷却装置としては第１
図及び第２図に示すようなものが使用されている。It is well known that the rough finishing exit temperature and winding temperature differ depending on the type of rolling. Therefore, water injection cooling control must be equipped with a system that takes into account differences in plate thickness, rolling speed, and cooling temperature patterns. Therefore, this is the first water injection cooling system of this kind.
The ones shown in Fig. 2 and Fig. 2 are used.

即ち仕上圧延機Ｆを出たストリップＳは多数のロールが
列設されたホットランテーブル２９上を走行し捲取機３
０で者取られる。That is, the strip S leaving the finishing mill F runs on a hot run table 29 on which a large number of rolls are arranged, and then passes through the winding machine 3.
The person is taken with 0.

図において、、１，２はポンプ、３，４は冷却用へツダ
ー主管であり、２２は締切り弁、２３は２方弁、２４は
３方弁（第２図）、２６は絞り弁、２７はへッダーを示
す。これらの装置における冷却水の冷却能はノズルから
流出する水量および圧力により変化するので、ノズルよ
り噴出する水の圧力および水量は常に一定になるように
制御する必要がある。In the figure, 1 and 2 are pumps, 3 and 4 are main pipes for cooling, 22 is a shutoff valve, 23 is a two-way valve, 24 is a three-way valve (Fig. 2), 26 is a throttle valve, and 27 indicates a header. Since the cooling capacity of the cooling water in these devices changes depending on the amount and pressure of water flowing out from the nozzle, it is necessary to control the pressure and amount of water ejected from the nozzle so that they are always constant.

もし圧力水量が変化すればストリップ冷却の熱伝達率ば
が変化することになる。ホットランテーブルの冷却では
圧延材の圧延サイズ（板厚、板幅）仕上出口温度、捲取
温度、圧延速度が決定すると、ホットランテーブルの冷
却長が下の式で決り、この冷却長に見合うノズルから冷
却水を注水する。If the amount of pressure water changes, the heat transfer coefficient of strip cooling will change. For cooling on a hot run table, once the rolling size (plate thickness, plate width), finish outlet temperature, winding temperature, and rolling speed of the rolled material are determined, the cooling length of the hot run table is determined by the formula below, and the nozzle corresponding to this cooling length is determined. Fill with cooling water.

Ｌ；冷却長 ｖ；圧延速度 Ｑ；熱伝達率 ｃ；比熱 ｙ；ストリップの比重 ＴＦ；仕切出口温度 Ｔｃ；捲取温度 Ｔｗ：冷却水の温度 この冷却長を予じめ予測しこの冷却長に見合うバンクの
へッダーノズルを関にして冷却する。L: cooling length v; rolling speed Q; heat transfer coefficient c; specific heat y; specific gravity TF of the strip; partition outlet temperature Tc; winding temperature Tw: temperature of cooling water. Predict this cooling length in advance and set it to this cooling length. Cool it using the header nozzle of the matching bank.

このへツダーの開閉を２方弁２３で行なう第１図の型式
の場合は冷却長の違いにより開へッダーの数が変った場
合に圧力および水量が変化する。従って熱伝達率Ｑが変
化し予測した捲取温度が変わる。この欠点をなくし捲取
温度の的中率を上げるため、第２図の注水装置では３方
弁２４を用い、主管に常に最高水量を通水して圧力を一
定に保ちながら、必要なとき予定された水量のみストリ
ップにかけ不必要な水はバイパス２５より排水する方式
を採用している。In the case of the type shown in FIG. 1 in which the headers are opened and closed by a two-way valve 23, the pressure and water amount change when the number of open headers changes due to the difference in cooling length. Therefore, the heat transfer coefficient Q changes and the predicted winding temperature changes. In order to eliminate this drawback and increase the accuracy of the winding temperature, the water injection device shown in Fig. 2 uses a three-way valve 24 to constantly supply the maximum amount of water to the main pipe, keeping the pressure constant, and when necessary. A method is adopted in which only the amount of water that has been removed is applied to the strip, and unnecessary water is drained from a bypass 25.

この方式によればへッダ‐のノズルから噴出する水の水
量圧力を一定に保持しているため、各へッダーノズルか
らの注水による冷却館、熱伝達率が一定となるため捲取
温度の的中率は高くなる。ところが圧力変動をなくすた
めにストリップ注水外の水を常時冷却用へツダー主管に
流しているため、水循環ポンプを常時稼動させている。
このためポンプモーター回転のための電力費がむだにな
る。（発明の目的） 本発明は温度制御精度を向上させつつ上記バイパス方式
（第２図）の欠点であるエネルギーロスを防止する装置
を提供するものである。According to this method, the water volume and pressure ejected from the header nozzles is kept constant, so the cooling chamber and heat transfer coefficient by water injection from each header nozzle are constant, so the winding temperature can be set at a target. The median rate will be higher. However, in order to eliminate pressure fluctuations, the water outside the strip water injection is constantly flowing into the main pipe for cooling, so the water circulation pump is constantly running.
As a result, electricity costs for rotating the pump motor are wasted. (Object of the Invention) The present invention provides a device that improves temperature control accuracy and prevents energy loss, which is a drawback of the bypass method (FIG. 2).

（発明の構成作用） このため本発明は、下記のように構成した。(Constitutive action of invention) Therefore, the present invention was constructed as follows.

複数のポンプと実績水圧測定用の圧力計を取付けた冷却
用へツダ−主管を２本設け、前記冷却用へツダー主管か
ら二方弁を有する分岐管を複数本分舷し、前記各分岐管
には冷却へッダーを配設し、前記各冷却用へッダーから
三方弁を有し前記三方弁の下流側に１個以上のへッダー
を取付けた枝管を複数本分岐させ、注水総量によりポン
プの運転台数制御と回転数制御を行うとともに実績水圧
と目標注水圧との差に対応してポンプの回転数制御を行
い、注水総量から決定されるバンク数により前記二方弁
を制御し、かつ通板速度変化による注水量変化に対応し
て前記三方弁を制御する制御装置を設けたことを特徴と
する板材の冷却注水装置。（実施例） 以下本発明を図面に示す実施例を用いて具体的に説明す
る。Two main pipes for cooling are installed with a plurality of pumps and a pressure gauge for measuring actual water pressure, and a plurality of branch pipes each having a two-way valve are branched from the main pipe for cooling. A cooling header is installed in the cooling header, and a plurality of branch pipes each having a three-way valve and one or more headers attached to the downstream side of the three-way valve are branched from each cooling header, and the pump is controlled by the total amount of water injected. control the number of pumps in operation and the number of revolutions of the pump, control the number of revolutions of the pump in response to the difference between the actual water pressure and the target water injection pressure, control the two-way valve according to the number of banks determined from the total amount of water injection, and A water injection device for cooling plate materials, characterized in that a control device is provided for controlling the three-way valve in response to changes in water injection amount due to changes in sheet threading speed. (Example) The present invention will be specifically described below using examples shown in the drawings.

上部冷却用へツダー主管３および下部冷却用へッダー主
管４から、それぞれ複数の分岐管５，６を分岐し、各分
岐管５，６から冷却用へツダー７，８を介して多数の枝
管９，１０が酢設されている（以下分岐管５又は６１本
の冷却単位をバンクと称す）。A plurality of branch pipes 5 and 6 are branched from the main header pipe 3 for upper cooling and the main header pipe 4 for lower cooling, and a large number of branch pipes are connected from each branch pipe 5 and 6 to cooling pipes 7 and 8. 9 and 10 (hereinafter, the cooling unit of 5 or 61 branch pipes will be referred to as a bank).

本実施例では上下各６バンクと、１バンクの上部冷却用
温度精密調整機構１１および下部冷却用温度精密調整機
構１２に分けられる。また、前記へツダー主管３，４に
は上部冷却水主管圧力計１３、下部冷却水主管圧力計１
４が設けられている。へッダー主管３，４へは上部冷却
水用送水ポンプ１および下部冷却水用送水ポンプ２によ
り水が送給されるが、この送水量はバンク数により制御
され、圧力変動が生じたときには前記圧力計１３，１４
で圧力変動を検出し、その信号を制御装置４川こ送信す
る。なお下部冷却用のポンプ２、圧力計１４、二方弁２
３、三方弁２４はそれぞれ制御装置４０と薮続している
が、上部冷却用のものと同じ接続の仕方であるので省略
している。そこで目標水圧との差を補正する回転数信号
をポンプ１，２にフィードバックしポンプの回転数制御
を行なうようにしている。各バンクの冷却用へッダー５
，６は第４図にも示すようにメインテナンス用の締切り
弁２２と、板厚、速度から注水量を決めてかつバンクが
注水選択されたときに弁を関にする２方弁２３と、該２
方弁２３が関にされてもストリップ側へ注水を行なわせ
ずに常時バイパス２５より冷却水を放水しておきストリ
ップの冷却パターン、圧延速度に合わせて瞬間に必要な
とき冷却水をストリップに注水できるようにした３方弁
２４と、ヘツダー２７から注水される水量を最適に調整
する絞り弁２６と、ストリップに注水するためにノズル
２８を備えたへッダー２７をもつた枝管１２より構成さ
れている。In this embodiment, it is divided into six upper and lower banks, one bank of an upper cooling temperature precision adjustment mechanism 11, and a lower cooling temperature precision adjustment mechanism 12. In addition, the header main pipes 3 and 4 include an upper cooling water main pipe pressure gauge 13 and a lower cooling water main pipe pressure gauge 1.
4 is provided. Water is fed to the header main pipes 3 and 4 by an upper cooling water water pump 1 and a lower cooling water water pump 2, but the amount of water fed is controlled by the number of banks, and when pressure fluctuations occur, the above pressure is Total 13,14
Detects pressure fluctuations and sends the signal to four control devices. In addition, a pump 2 for cooling the lower part, a pressure gauge 14, a two-way valve 2
3. The three-way valves 24 are each connected to the control device 40, but are omitted because they are connected in the same way as the one for upper cooling. Therefore, a rotation speed signal for correcting the difference from the target water pressure is fed back to the pumps 1 and 2 to control the rotation speed of the pumps. Cooling header 5 for each bank
, 6 as shown in FIG. 4, a shut-off valve 22 for maintenance, a two-way valve 23 that determines the amount of water to be injected from the plate thickness and speed, and that operates when the bank is selected for water injection. 2
Even if the diverter valve 23 is turned on, cooling water is not injected to the strip side, and cooling water is always discharged from the bypass 25, and cooling water is injected into the strip whenever necessary according to the cooling pattern of the strip and the rolling speed. It consists of a branch pipe 12 having a three-way valve 24 that allows water to flow through the strip, a throttle valve 26 that optimally adjusts the amount of water injected from the header 27, and a header 27 that has a nozzle 28 for injecting water into the strip. ing.

ストリップの圧延速度はホットランテーブルの速度にほ
ぼ近いと考えてよいが、この速度は第７図のようにスト
リップ先端が仕上圧延機を出てコィラー３０に捲き付く
までの速度（スレッデイング速度）は例えば７０仇ｈｐ
ｍで通板し、コィラー３０に捲き付き後は約２肌ｐｍ／
ｓの割合で加速圧延（ズーミング圧延）を行ない１０５
伍ｈｐｍ迄加速する。The rolling speed of the strip can be considered to be approximately close to the speed of the hot run table, but this speed is the speed at which the tip of the strip leaves the finishing mill and wraps around the coiler 30 (threading speed) as shown in Figure 7. For example, 70 hp
After threading the sheet at m and winding it around the coiler 30, it is approximately 2 skin pm/
Perform accelerated rolling (zooming rolling) at a rate of 105
Accelerates to 5hpm.

１０５仇ｈｐｍの最高速度に達したら、仕上圧延機尻抜
け直前に９５仇ｈｐｍに減速して圧延する。When the maximum speed of 105 hpm is reached, the rolling speed is reduced to 95 hpm just before the end of the finishing mill.

この圧延速度の変化の中で捲取温度を一定にするには、
注水量を圧延速度の増減に対応して増減させる必要があ
る。本実施例では第３図、第４図、第５図の機器配置の
装置を用いてコイル１本毎に捲取温度の制御を下記のよ
うに行なう。In order to keep the winding temperature constant as the rolling speed changes,
It is necessary to increase or decrease the amount of water injected in response to increases or decreases in rolling speed. In this embodiment, the winding temperature of each coil is controlled as follows using an apparatus having the equipment arrangement shown in FIGS. 3, 4, and 5.

この注水量、注水圧力決定の手順は、ある材質のスラブ
の圧延スケジュールが決まると圧延板厚、圧延板幅、最
高圧延速度、仕上出口温度、捲取温度を関数としてホッ
トランテーブル２９で注水するに必要な注水圧力、ゾー
ン長さ、バンク数、ヘッダー数をプロセス制御装置５川
こより決める。The procedure for determining the water injection amount and water injection pressure is that once the rolling schedule for a slab of a certain material is determined, water is injected on the hot run table 29 as a function of the rolled plate thickness, rolled plate width, maximum rolling speed, finishing outlet temperature, and winding temperature. The required water injection pressure, zone length, number of banks, and number of headers are determined from the process control equipment.

注水予定バンク数が決まると注水総量が計算でき、必要
ポンプ台数が決定される。プロセス制御装置５０から制
御装置４０に対して必要ポンプ台数、バンク数、ヘッダ
ー数、注水圧力を送信する。制御装置４０ではまず最高
速度に相当するバンクの２方弁２３を開にして注水準備
を行なう。この場合３方弁２４は最初バイパス２５側に
関でストリップ側に注水されないようにしておく。最高
速度に相当するバンクの２方弁２３閥の使用総水量を上
部冷却用送水ポンプ１、下部冷却用送水ポンプ２の吐出
量になるように、該ポンプ１，２を台数制御、回転数制
御で流量制御する。更に流量決定後上下部冷却用へッダ
ー主管３および４に取り付けた圧力計１３，１４が一定
になっていなかった場合、圧力計信号を制御装置４０に
インプットし、目標値との差を補正する回転数信号をポ
ンプ１，２にフィードバックし冷却用へッダ−主管３，
４の圧力が常に一定になるようにポンプ１，２の吐出流
量を調節する。なお圧力変動を少なくするために、第６
図イのように上部冷却用へッダー主管３および下部冷却
用へッダー主管４をへッダー２７よりかなり高い位置に
設け、水頭４肌位が常時へッダー２７にかかるように配
置して圧力変動を少なくておくことが好ましい。Once the planned number of banks for water injection is determined, the total amount of water injection can be calculated and the number of pumps required is determined. The required number of pumps, number of banks, number of headers, and water injection pressure are transmitted from the process control device 50 to the control device 40. The control device 40 first opens the two-way valve 23 of the bank corresponding to the highest speed to prepare for water injection. In this case, the three-way valve 24 is initially connected to the bypass 25 side so that water is not injected to the strip side. The number and rotation speed of the pumps 1 and 2 are controlled so that the total amount of water used by the 23 two-way valves of the bank corresponding to the maximum speed becomes the discharge amount of the upper cooling water pump 1 and the lower cooling water pump 2. to control the flow rate. Furthermore, if the pressure gauges 13 and 14 attached to the upper and lower cooling header main pipes 3 and 4 are not constant after determining the flow rate, the pressure gauge signal is input to the control device 40 and the difference with the target value is corrected. The rotation speed signal is fed back to the pumps 1 and 2, and the cooling header-main pipe 3,
The discharge flow rate of pumps 1 and 2 is adjusted so that the pressure of pump 4 is always constant. In addition, in order to reduce pressure fluctuations, the sixth
As shown in Figure A, the upper cooling header main pipe 3 and the lower cooling header main pipe 4 are installed at a position considerably higher than the header 27, and are arranged so that the water head 4 is always on the header 27 to prevent pressure fluctuations. It is preferable to keep it small.

またバンクの選択によって本管、枝管圧力が変動しない
ように冷却用へッダー主管３，４の原流から末流に行く
にしたがって第６図口に示すように管径を段差を付けて
細く変化させることが、本発明を実施させるうえで望ま
しい。このように事前に設定された水量の中で第７図の
ようにスレッディング速度７０瓜ｈｐｍ、加速圧延２０
ｍｐｍ／ｓ、最高速度１０５肌ｐｍ、尻抜け速度９５０
ｈｐｍで圧延するストリップの捲取温度が一定になるよ
うに時々刻々の速度変化をプロセス計算機５０から制御
装置４０１こインプットし、スレツディング速度、加速
圧延、最高速度、尻突け速度に見合うへッダー２７数を
選択し、３方弁２４をバイパス２５側によりストリップ
の注水側（又はその逆方向へ）へ瞬時のうちに切替えて
行く。また、確取温度調整をより精密に制御したい場合
には、第３図の１１，１２および第５図に示す上下部冷
却用温度精密調整機構を必要に応じて用いればよい。こ
れは各へツダー２７に１個づつ三方弁２４が取付けられ
、板材への注水量を正確に制御出釆るようになっている
。一本のストリップの冷却が完了するとプロセス制御装
置５０は次のストリップの冷却長Ｌ等を演算し制御装置
４０に送信する。たとえば冷却長Ｌが半分になればバン
ク数は半数となり二方弁２３の半分を閉とし、次のスト
リップの冷却の準備を行う。第７図のようなストリップ
の圧延パターンの場合、捲取温度の精度を的中させるた
め従来方式の第２図の３方弁方式を採用した場合には、
板厚１．５側、３．０脚の場合とも２００肌３／ｍｉｎ
の水を常に使用している。In addition, in order to prevent the main and branch pipe pressure from fluctuating depending on the selection of banks, the pipe diameter changes gradually and becomes narrower as it goes from the source to the end of the cooling header main pipes 3 and 4, as shown in the opening in Figure 6. It is desirable to carry out the present invention. As shown in FIG. 7, under the preset water volume, the threading speed was 70 hpm and the accelerated rolling was 20 mt.
mpm/s, maximum speed 105 skin pm, bottom speed 950
In order to keep the winding temperature of the strip rolled at hpm constant, momentary speed changes are input from the process computer 50 to the control device 401, and the header is adjusted to match the threading speed, accelerated rolling, maximum speed, and butt speed. 27 is selected, and the three-way valve 24 is instantly switched to the water injection side of the strip (or to the opposite direction) by the bypass 25 side. In addition, if it is desired to control the captured temperature adjustment more precisely, the temperature precision adjustment mechanisms for upper and lower cooling shown in 11 and 12 in FIG. 3 and in FIG. 5 may be used as necessary. A three-way valve 24 is attached to each header 27 to accurately control the amount of water injected into the plate. When the cooling of one strip is completed, the process control device 50 calculates the cooling length L of the next strip, etc., and sends it to the control device 40. For example, if the cooling length L is halved, the number of banks will be halved and half of the two-way valves 23 will be closed to prepare for cooling the next strip. In the case of a strip rolling pattern as shown in Fig. 7, if the conventional 3-way valve method shown in Fig. 2 is adopted to ensure accurate winding temperature,
200 skin 3/min for both plate thickness 1.5 side and 3.0 leg
water is always used.

これに対し本発明による第３図のようなホットランテー
ブルの注水方式を採用した場合、板厚３．０個では２０
０の３／ｍｉｎの水を使用するが、板厚１．５側の場合
は約１／２の９０の３／ｍｉｎの水を使用すればよい。
この比較を第８図に示している。板厚１．５脚の場合は
ポンプモーターの動力エネルギーの使用量は１／２にな
る。第８図において、直線Ａが従来形式の注水量（板厚
１．５柳、３．０肋）、鎖線Ｂ，が本発明による注水量
（板厚３．０柳）、鎖線Ｂ２が本発明による注水量（板
厚１．５側）を示し、斜線部は本発明によって節約され
た使用水量（板厚１．５肋の場合）を示している。On the other hand, when the water injection method of the hot run table as shown in Fig. 3 according to the present invention is adopted, 20
Water at a rate of 0.3/min is used, but in the case of a board with a thickness of 1.5, water at a rate of approximately 1/2, 90/min, may be used.
This comparison is shown in FIG. If the plate thickness is 1.5 legs, the amount of power energy used by the pump motor will be halved. In Fig. 8, straight line A is the amount of water injected in the conventional type (board thickness 1.5 willow, 3.0 ribs), chain line B is the amount of water injected according to the present invention (board thickness 3.0 willow), and chain line B2 is the inventive method. The amount of water injected according to the present invention (in the case of a plate thickness of 1.5 mm) is shown, and the shaded area shows the amount of water used saved by the present invention (in the case of a plate thickness of 1.5 mm).

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は従来のホットランテーブル注水冷却装
置を示し、第３図は本発明による同注水冷却装置を示す
。 第４図は第３図の符号５部の拡大図、第５図は同じく第
３図の符号７部の拡大図、第６図は第３図の側面概略図
、第７図はストリップの通常の圧延速度パターンを示し
第８図は従来法（第２図）と本発明法による冷却水量比
較図を示す。１，２・・・・・・ポンプ、３，４・・・
・・・冷却用へッダー主管、５，６・・・・・・分岐管
、７，８・・・・・・冷却用へ、ソダー、９，１０・・
・・・・枝管、１１，１２・・・・・・温度精密調整機
構、１３，１４・・・・・・圧力計、２２・…・・締切
り弁、２３・・・・・・２方弁、２４・・・・・・３方
弁、２５……バイパス、２６……絞り弁、２７……へッ
ダー、２８……ノズル、２９……ホットランテーフル、
３０・・・・・・コイラー、４０・・・・・・制御装置
、５０・・・・・・プロセス計算機。 第１図 第２図 第３図 第４図 第５図 第６図 第７図 第８図1 and 2 show a conventional hot run table water injection cooling device, and FIG. 3 shows the same water injection cooling device according to the present invention. Fig. 4 is an enlarged view of part 5 in Fig. 3, Fig. 5 is an enlarged view of part 7 in Fig. 3, Fig. 6 is a schematic side view of Fig. 3, and Fig. 7 is a normal view of the strip. FIG. 8 shows a comparative diagram of the amount of cooling water between the conventional method (FIG. 2) and the method of the present invention. 1, 2... pump, 3, 4...
...Header main pipe for cooling, 5, 6... Branch pipe, 7, 8... For cooling, Soder, 9, 10...
... Branch pipe, 11, 12 ... Temperature precision adjustment mechanism, 13, 14 ... Pressure gauge, 22 ... Shutoff valve, 23 ... 2-way Valve, 24... Three-way valve, 25... Bypass, 26... Throttle valve, 27... Header, 28... Nozzle, 29... Hot run full,
30... Coiler, 40... Control device, 50... Process computer. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

【特許請求の範囲】[Claims] １ 複数のポンプと実績水圧測定用の圧力計を取付けた
冷却用ヘツダー主管を２本設け、前記冷却用ヘツダー主
管から二方弁を有する分岐管を複数本分岐し、前記各分
岐管には冷却ヘツダーを配設し、前記各冷却用ヘツダー
から三方弁を有し前記三方弁の下流側に１個以上のヘツ
ダーを取付けた枝管を複数本分岐させ、注水総量により
ポンプの運転台数制御と回転数制御を行うとともに実績
水圧と目標注水圧との差に対応してポンプの回転数制御
を行い、注水総量から決定されるバンク数により前記二
方弁を制御し、かつ通板速度変化による注水量変化に対
応して前記三方弁を制御する制御装置を設けたことを特
徴とする板材の冷却注水装置。1. Two main cooling header pipes are installed with multiple pumps and pressure gauges for measuring actual water pressure, and a plurality of branch pipes each having a two-way valve are branched from the main cooling header pipe, and each of the branch pipes has a cooling pipe. A header is installed, and a plurality of branch pipes each having a three-way valve and one or more headers attached to the downstream side of the three-way valve are branched from each cooling header, and the number of pumps in operation can be controlled and rotated based on the total amount of water injected. In addition to controlling the pump rotation speed in accordance with the difference between the actual water pressure and the target water injection pressure, the two-way valve is controlled according to the number of banks determined from the total amount of water injection, and the pump rotation speed is A water injection device for cooling plate materials, characterized in that a control device is provided for controlling the three-way valve in response to changes in water amount.
JP54127893A 1979-10-05 1979-10-05 Cooling water injection device for plate materials Expired JPS6020090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54127893A JPS6020090B2 (en) 1979-10-05 1979-10-05 Cooling water injection device for plate materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54127893A JPS6020090B2 (en) 1979-10-05 1979-10-05 Cooling water injection device for plate materials

Publications (2)

Publication Number Publication Date
JPS5653815A JPS5653815A (en) 1981-05-13
JPS6020090B2 true JPS6020090B2 (en) 1985-05-20

Family

ID=14971258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54127893A Expired JPS6020090B2 (en) 1979-10-05 1979-10-05 Cooling water injection device for plate materials

Country Status (1)

Country Link
JP (1) JPS6020090B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108114995A (en) * 2016-11-30 2018-06-05 宝山钢铁股份有限公司 A kind of arbitrarily adjustable cooling manifold of water convexity and its current amount control method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6084111U (en) * 1983-11-15 1985-06-10 石川島播磨重工業株式会社 Water supply device for cooling equipment for steel plates
JP5617321B2 (en) * 2010-04-12 2014-11-05 新日鐵住金株式会社 Steel plate manufacturing method using pump for driving cooling device
US10695810B2 (en) * 2015-02-09 2020-06-30 Toshiba Mitsubishi-Electric Industrial Systems Corporation Descaling system, control device of the descaling system, and method for controlling the descaling system
CN110087802B (en) * 2016-12-26 2021-11-23 宝山钢铁股份有限公司 Thin strip continuous casting strip steel cooling mechanism and cooling method thereof
CN114345954A (en) * 2021-12-13 2022-04-15 首钢京唐钢铁联合有限责任公司 Strip steel cooling control method, device and equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028885A (en) * 1973-06-13 1975-03-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028885A (en) * 1973-06-13 1975-03-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108114995A (en) * 2016-11-30 2018-06-05 宝山钢铁股份有限公司 A kind of arbitrarily adjustable cooling manifold of water convexity and its current amount control method
CN108114995B (en) * 2016-11-30 2019-08-27 宝山钢铁股份有限公司 A kind of arbitrarily adjustable cooling manifold of water convexity and its water flow amount control method

Also Published As

Publication number Publication date
JPS5653815A (en) 1981-05-13

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