JPH01222005A - Method and instrument for detecting breakage of cooling apparatus in blast furnace body - Google Patents
Method and instrument for detecting breakage of cooling apparatus in blast furnace bodyInfo
- Publication number
- JPH01222005A JPH01222005A JP4885688A JP4885688A JPH01222005A JP H01222005 A JPH01222005 A JP H01222005A JP 4885688 A JP4885688 A JP 4885688A JP 4885688 A JP4885688 A JP 4885688A JP H01222005 A JPH01222005 A JP H01222005A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- furnace
- gas collector
- cooling
- collector
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 27
- 239000012212 insulator Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000003657 drainage water Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、高炉羽目、ステーブクーラー。[Detailed description of the invention] [Industrial application field] This invention is a blast furnace wall and stave cooler.
冷却盤等の高炉炉体冷却設備の破損検知方法および破損
検知装置に関するものである。The present invention relates to a method and apparatus for detecting damage to blast furnace body cooling equipment such as cooling disks.
高炉炉体冷却設備の破損による冷却水の漏洩を早期に発
見、することは、高炉安定操業を確保する上で最も必要
不可欠であり、従来から多くの破損検知方法が提案され
ている。Early detection and detection of cooling water leakage due to damage to blast furnace body cooling equipment is most essential for ensuring stable blast furnace operation, and many damage detection methods have been proposed.
これらのうち、比較的簡単な方法として、冷却体の排水
側に温度計を設け、排水の温度上昇により破損を検知す
る方法や、冷却体の給水側と排水側に流量計を設け、そ
の流量差を演算する方法や、冷却体の排水側に炉内ガス
捕集部を設け、炉内圧力により冷却体破損部から冷却水
中に流入した炉内ガスを捕集し、捕集したガスを分析す
ることによる方法が一般に用いられている。Among these methods, relatively simple methods include installing a thermometer on the drainage side of the cooling body and detecting damage by the temperature rise of the drainage water, and installing flowmeters on the water supply side and drainage side of the cooling body to detect the flow rate. A method of calculating the difference, a furnace gas collection unit is installed on the drainage side of the cooling body, the furnace gas that flows into the cooling water from the damaged part of the cooling body due to the pressure inside the furnace is collected, and the collected gas is analyzed. A commonly used method is to
冷却体の排水温度により冷却体の破損を検知する方法は
、容易ではあるが、冷却体の損耗状態や炉内熱負荷の変
動により冷却体が破損していないにもかかわらず排水温
度が上昇することがあるため、誤検知を生じやすい。Although it is easy to detect damage to the cooling body based on the temperature of the cooling body's drainage water, the temperature of the drainage water may rise even though the cooling body is not damaged due to wear and tear on the cooling body or fluctuations in the heat load inside the furnace. Because of this, false positives are likely to occur.
冷却体の給排水部に流量計を設けて流量差を演算する方
法は、冷却体の破損部が小さく炉内への漏水が少ない場
合、その検出が困難となり、逆に流量計の精度を上げ過
ぎると、外乱によるエラー信号が高頻度で発生するため
、信頼性が低下してしまう。また、流量計および演算器
は非常に高価であるため、冷却体毎に取付けるには多大
な費用を要する。The method of calculating the flow rate difference by installing a flow meter in the water supply and drainage section of the cooling body makes it difficult to detect if the damaged part of the cooling body is small and there is little water leakage into the furnace, and conversely, the accuracy of the flow meter is increased too much. In this case, error signals due to disturbances occur frequently, resulting in a decrease in reliability. Furthermore, since flow meters and computing units are very expensive, it requires a great deal of cost to install them for each cooling body.
冷却体の排水側に炉内ガス捕集部を設け、捕集したガス
を分析する方法は、検知精度は高いが、検知を人力にた
よるために冷却体の個数が多い場合、検知までに多大な
労力と時間を要する。The method of installing a furnace gas collection unit on the drainage side of the cooling body and analyzing the collected gas has high detection accuracy, but because detection relies on manual labor, it may be difficult to detect the gas if there are a large number of cooling bodies. It requires a lot of effort and time.
なお、その他に、検出箇所に埋込んだ導線の切断により
検知する方法（特開昭５２−３０２０４号）、冷却水の
流入により起こる炉内輻射光の強度変化を利用する方法
（特開昭５１−７９６０２号）、炉内ガスにより生じる
気泡を超音波を用いて検出する方法（特開昭５２−５２
８１０号）、放射線を用いる方法（実開昭５５−９９２
４８号）などがあるが、いずれも高価な装置となる。In addition, there is also a method of detecting by cutting a conducting wire embedded in the detection point (Japanese Patent Application Laid-Open No. 52-30204), and a method of utilizing changes in the intensity of radiant light inside the reactor caused by the inflow of cooling water (Japanese Patent Application Laid-Open No. 51/1989). -79602), method of detecting bubbles generated by furnace gas using ultrasonic waves (Japanese Patent Laid-Open No. 52-52
810), method using radiation (Utility Model Application No. 55-992)
No. 48), but all of them are expensive devices.
この発明は、前述のような問題点を解消すべくなされた
もので、その目的は、比較的簡単な構成で安価であり、
しかも高精度かつ迅速に冷却体の破損を検出し得る高炉
炉体冷却設備の破損検出方法および破損検知装置を提供
することにある。This invention was made to solve the above-mentioned problems, and its purpose is to have a relatively simple configuration and low cost.
Moreover, it is an object of the present invention to provide a method and a device for detecting damage to blast furnace body cooling equipment, which can detect damage to a cooling body with high precision and quickly.
本発明の破損検知方法は、冷却体の炉外側に位置する排
水管に、この排水管に連通ずるガス捕集器を設け、この
ガス捕集器内の電気的導通。The damage detection method of the present invention includes providing a gas collector in a drain pipe located outside the furnace of the cooling body and communicating with the drain pipe, and establishing electrical continuity within the gas collector.
不通を検出し、電気的不通時に、冷却体の破損として警
報を発するようにしたものである。This system detects electrical interruptions and issues an alarm indicating that the cooling body has been damaged.
本発明の破損検出装置は、高炉炉体冷却体の炉外側に位
置する排水管の鉛直上方に位置し、この排水管に連通ず
るように接続されたガス捕集器と、この捕集器内に挿入
され、絶縁体を介して間隔をおいてガス捕集器に取付け
られる一対の電極と、この一対の電極に接続され、電気
的導通、不通を検出し、警報を発し得る検知回路から構
成される。The damage detection device of the present invention includes a gas collector located vertically above a drain pipe located outside the furnace of a blast furnace body cooling body, and connected to the drain pipe so as to communicate with the drain pipe, and a gas collector inside the collector. It consists of a pair of electrodes that are inserted into the gas collector and attached to the gas collector at intervals through an insulator, and a detection circuit that is connected to this pair of electrodes and can detect electrical continuity or disconnection and issue an alarm. be done.
また、一対の電極のうち、一方の電極をガス捕集器とす
る上記装置。Further, in the above-mentioned device, one of the pair of electrodes is used as a gas collector.
通常の状態において、ガス捕集器は冷却水が充満してい
るため、一対の電極は電気的に導通状態にあり、警報を
発することはない。Under normal conditions, the gas collector is filled with cooling water, so the pair of electrodes are electrically connected, and no alarm is generated.
冷却体が破損すると、炉内圧力により炉内ガスが排出管
を通ってガス捕集器に流入し、ガス捕集器内が炉内ガス
で充満されると、一対の電極が電気的に不通状態となり
、ランプあるいはブザー等により警報が発せられる。If the cooling body is damaged, the furnace gas will flow into the gas collector through the exhaust pipe due to the furnace pressure, and when the gas collector is filled with furnace gas, the pair of electrodes will become electrically disconnected. condition, and a warning is issued by a lamp or buzzer.
一方の電極をガス捕集器で代用すれば、−本の電極で検
知を行うことができる。If one electrode is replaced with a gas collector, detection can be performed with -1 electrodes.
以下、この発明を図示する一実施例に基づいて説明する
。The present invention will be described below based on an illustrated embodiment.
これは、第３図に示すように、冷却盤１に適用した例で
あり、冷却盤１は炉壁２に挿入されて炉体鉄皮３に固定
され、給水管４．排水管５により冷却水Ｗを循環させて
炉壁２の冷却を行なっている。As shown in FIG. 3, this is an example applied to a cooling plate 1, in which the cooling plate 1 is inserted into the furnace wall 2 and fixed to the furnace shell 3, and the water supply pipes 4. Cooling water W is circulated through a drain pipe 5 to cool the furnace wall 2.
このような冷却盤１の′排水管５の炉外側に、接続管６
を鉛直上方に突設して、その先端にガス捕集器７を、排
水管５と連通ずるように、かつ封水できるように接続す
る。A connecting pipe 6 is connected to the outside of the furnace of the drain pipe 5 of the cooling panel 1.
is provided to protrude vertically upward, and a gas collector 7 is connected to the tip thereof so as to communicate with the drain pipe 5 and to seal the water.
このようなガス捕集器７内の電気的導通、不通を検出で
きるように、ガス捕集器７のほぼ中央部に一対の電極８
．９を挿入する。この一対の電極８，９は、絶縁体１０
を介してガス捕集器７の側壁に取付け、電源１１Ａと警
報ランプ１１Ｂからなる検知回路１１に接続する。また
、ガス捕集器７の上部には、ガス抜きバルブ１２を取付
けておく。A pair of electrodes 8 are provided approximately in the center of the gas collector 7 so as to detect electrical continuity or disconnection within the gas collector 7.
．． Insert 9. This pair of electrodes 8 and 9 is connected to an insulator 10
It is attached to the side wall of the gas collector 7 via a power supply 11A and connected to a detection circuit 11 consisting of a power supply 11A and an alarm lamp 11B. Further, a gas vent valve 12 is attached to the upper part of the gas collector 7.
以上のような構成において、ガス抜きバルブ１２を開け
てガス捕集器７内を予め冷却水Ｗで満たし、ガス抜きバ
ルブ１２を閉める。このような状態において、通常はガ
ス捕集器７内には冷却水Ｗが充満しているので、２本の
電極８゜９は電気的に導通状態にあり、警報ランプ１１
Ｂが点灯している。In the above configuration, the gas vent valve 12 is opened to fill the gas collector 7 with cooling water W in advance, and the gas vent valve 12 is closed. In such a state, since the gas collector 7 is normally filled with cooling water W, the two electrodes 8 and 9 are electrically connected, and the alarm lamp 11 is turned on.
B is lit.
冷却盤１の炉内側が破損すると、冷却盤１内に炉内ガス
Ｇが流入してくる。ここで、通常は破損部１３から冷却
水が流出するが、現在では炉内圧力を大気圧よりも１〜
５ ｋｇ／ｃｄ高くして操業することが広く行われてお
り、炉内ガスＧを冷却体内へ流入させることは可能であ
る。When the inside of the cooling plate 1 is damaged, the in-furnace gas G flows into the cooling plate 1. Normally, cooling water flows out from the damaged part 13, but currently the pressure inside the furnace is lowered by 1 to
It is widely practiced to operate the reactor at a pressure higher than 5 kg/cd, and it is possible to allow the in-furnace gas G to flow into the cooling body.
冷却盤１内に流入した炉内ガスＧは、排水管５を通って
、その一部がガスの浮力によりガス捕集器７に捕集され
る。ガス捕集器７内に炉内ガスＧが溜まると、２本の電
極８，９間は炉内ガスＧで満たされるため、電気的に不
通状態となり、警報ランプ１１Ｂが消えて破損を知らせ
る。The furnace gas G flowing into the cooling plate 1 passes through the drain pipe 5, and a part of it is collected by the gas collector 7 due to the buoyancy of the gas. When the furnace gas G accumulates in the gas collector 7, the space between the two electrodes 8 and 9 is filled with the furnace gas G, resulting in an electrically disconnected state, and the alarm lamp 11B goes out to notify damage.
なお、ガス抜きバルブ１２は、ガス捕集器７の取付時あ
るいは冷却体破損処置後に、ガス捕集器７内に溜まった
ガスを除去し、２本の電極８．９を導通状態にリセット
するために用いられる。Note that the gas vent valve 12 removes the gas accumulated in the gas collector 7 and resets the two electrodes 8.9 to a conductive state when the gas collector 7 is installed or after repairing damage to the cooling body. used for
また、２本の電極８．９の間隔は、冷却水の表面張力と
電気抵抗を考慮して適当な距離となるようにしておく。Further, the distance between the two electrodes 8.9 is set to an appropriate distance in consideration of the surface tension and electrical resistance of the cooling water.
即ち、２本の電極８，９間の距離が短すぎると、ガス捕
集器７内の冷却水Ｗが炉内ガスＧで置換された後も、冷
却水の表面張力により２本の電極間に冷却水が水滴とな
って残存することがあるため、誤検知につながり、逆に
電極間が広すぎると、電極間の電気抵抗が大きくなり、
検知精度が悪くなることがある。In other words, if the distance between the two electrodes 8 and 9 is too short, even after the cooling water W in the gas collector 7 is replaced with the furnace gas G, the surface tension of the cooling water will cause the distance between the two electrodes to Cooling water may remain in the form of water droplets, leading to false detection; conversely, if the distance between the electrodes is too wide, the electrical resistance between the electrodes will increase.
Detection accuracy may deteriorate.
第４図に示すのは、検知回路に電気抵抗測定器１４を用
いた例であり、抵抗が設定値より大きくなると、電気的
不通すなわち破損と判断するものである。FIG. 4 shows an example in which an electrical resistance measuring device 14 is used as a detection circuit, and when the resistance becomes larger than a set value, it is determined that there is an electrical disconnection, that is, damage.
第５図に示すのは、一方の電極８を絶縁体ＩＯを介して
ガス捕集器７内に挿入し、他方の電極９をガス捕集器７
で代用した変形例である。In FIG. 5, one electrode 8 is inserted into the gas collector 7 through an insulator IO, and the other electrode 9 is inserted into the gas collector 7.
This is a modified example in which .
このようにすれば、−本の電極で検知を行なうことがで
き、装置をより安価なものとすることができる。また、
これに限らずガス捕集器７内の電気的導通、不通が検出
できる電極構成であればよい。In this way, the detection can be performed with -1 electrodes, and the device can be made cheaper. Also,
The present invention is not limited to this, and any electrode configuration that can detect electrical conduction or disconnection within the gas collector 7 may be used.
さらに、第６図に示すように、検知回路１１に、リレー
１１Ｃと常開接点ＬＩＤを設け、破損が発生すると、警
報ランプＩＩＢが点灯するようにしてもよいし、第７図
に示すように、ブザー１１Ｅを鳴らすようにしてもよい
。Furthermore, as shown in FIG. 6, the detection circuit 11 may be provided with a relay 11C and a normally open contact LID, so that when damage occurs, an alarm lamp IIB is lit, or as shown in FIG. , the buzzer 11E may be sounded.
なお、冷却盤について説明したが、本発明は高炉羽口、
ステープクーラーなどにも適用できることはいうまでも
ない。Although the cooling disk has been described, the present invention also applies to blast furnace tuyeres,
Needless to say, it can also be applied to staple coolers.
本発明は以上のような構成からなるので、次のような効
果を奏する。Since the present invention has the above-described configuration, it has the following effects.
（ｉ） 冷却体の炉内側破損部から冷却体内に流入す
る炉内ガスを一対の電極で検知するため、検知精度が高
い。(i) Since the furnace gas flowing into the cooling body from the damaged part inside the cooling body is detected by a pair of electrodes, the detection accuracy is high.
（ｉｉ ） 一対の電極と検知回路で電気的に検知す
るため、迅速な検知が可能であるとともに、構造が簡単
となり、低コストで遠隔自動監視が可能である。(ii) Since detection is performed electrically using a pair of electrodes and a detection circuit, rapid detection is possible, the structure is simple, and remote automatic monitoring is possible at low cost.
（ｉｉｉ ） 装置が安価となり、多数設置する場合
に、好適である。(iii) The device is inexpensive and suitable for installation in large numbers.
（ｉｖ ） 以上から、冷却体の破損検知を正確かつ
迅速に、しかも労力をかけずに実施でき、冷却水の炉内
への流入を最小限でくい止めることができる。(iv) From the above, damage to the cooling body can be detected accurately and quickly, and without much effort, and the flow of cooling water into the furnace can be minimized.
（ｖ） 一方の電極をガス捕集器で代用すれば、装置
をより安価なものとすることができる。(v) If one electrode is replaced by a gas collector, the device can be made cheaper.
第１図、第２゛図は本発明の検知装置の検知前。
検知時を示す断面図、第３図は冷却体の一例を示す概略
断面図、第４図ないし第７図は変形例を示す概略図であ
る。
■・・冷却盤、２・・炉壁、３・・炉体鉄皮、４・・給
水管、５・・排水管、６・・接続管、７・・ガス捕集器
、８，９・・電極、１０・・絶縁体、１１・・検知回路
、ＩＩＡ・・電源、１１Ｂ・・警報ランプ、ＩＩＣ・・
リレー、１１Ｄ・・常開接点、ＩＩＥ・・ブザー、１２
・・ガス抜きバルブ、１３・・破損部、１４・・電気抵
抗測定器。
第１図
第２図
１１検知回路
第 ３ 図
第５図
第６図
第４図
第７図Figures 1 and 2 are before detection by the detection device of the present invention. FIG. 3 is a schematic cross-sectional view showing an example of a cooling body, and FIGS. 4 to 7 are schematic views showing modified examples. ■...Cooling plate, 2...Furnace wall, 3...Furnace body shell, 4...Water supply pipe, 5...Drain pipe, 6...Connecting pipe, 7...Gas collector, 8,9... - Electrode, 10... Insulator, 11... Detection circuit, IIA... Power supply, 11B... Alarm lamp, IIC...
Relay, 11D...Normally open contact, IIE...Buzzer, 12
・・Gas vent valve, 13・・Damaged part, 14・・Electric resistance measuring device. Figure 1 Figure 2 11 Detection circuit Figure 3 Figure 5 Figure 6 Figure 4 Figure 7
Claims (3)
の排水管に連通するガス捕集器を設け、このガス捕集器
内の電気的導通、不通を検出し、電気的不通時に、冷却
体の破損として警報を発することを特徴とする高炉炉体
冷却設備の破損検知方法。(1) A gas collector is installed in the drain pipe located outside the furnace of the blast furnace body cooling body, and the gas collector is connected to the drain pipe. A method for detecting damage to blast furnace body cooling equipment, which is characterized in that, at times, an alarm is issued as a result of damage to the cooling body.
上方に位置し、この排水管に連通するように接続された
ガス捕集器と、 このガス捕集器内に挿入され、絶縁体を介して間隔をお
いてガス捕集器に取付けられる一対の電極と、 この一対の電極に接続され、電気的導通、 不通を検出し、警報を発し得る検知回路を備えているこ
とを特徴とする高炉炉体冷却設備の破損検知装置。(2) a gas collector located vertically above a drain pipe located outside the furnace of the blast furnace body cooling body and connected to the drain pipe so as to communicate with the drain pipe; and a gas collector inserted into the gas collector, It is equipped with a pair of electrodes that are attached to the gas collector at intervals via an insulator, and a detection circuit that is connected to this pair of electrodes and can detect electrical continuity or discontinuity and issue an alarm. Features: Damage detection device for blast furnace body cooling equipment.
極をガス捕集器としたことを特徴とする高炉炉体冷却設
備の破損検知装置。(3) A damage detection device for blast furnace body cooling equipment, characterized in that one of the pair of electrodes according to claim (2) is used as a gas collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048856A JP2596046B2 (en) | 1988-03-02 | 1988-03-02 | Method and apparatus for detecting damage to blast furnace furnace cooling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048856A JP2596046B2 (en) | 1988-03-02 | 1988-03-02 | Method and apparatus for detecting damage to blast furnace furnace cooling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01222005A true JPH01222005A (en) | 1989-09-05 |
| JP2596046B2 JP2596046B2 (en) | 1997-04-02 |
Family
ID=12814912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63048856A Expired - Lifetime JP2596046B2 (en) | 1988-03-02 | 1988-03-02 | Method and apparatus for detecting damage to blast furnace furnace cooling equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596046B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100798065B1 (en) * | 2001-11-16 | 2008-01-28 | 주식회사 포스코 | Apparatus for collecting the cooling water leaked to the mixing chamber of hot blast furnace |
| CN110055363A (en) * | 2019-06-05 | 2019-07-26 | 山东钢铁股份有限公司 | A kind of device of the small set leakage of detection blast furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025404A (en) * | 1973-07-09 | 1975-03-18 |
-
1988
- 1988-03-02 JP JP63048856A patent/JP2596046B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025404A (en) * | 1973-07-09 | 1975-03-18 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100798065B1 (en) * | 2001-11-16 | 2008-01-28 | 주식회사 포스코 | Apparatus for collecting the cooling water leaked to the mixing chamber of hot blast furnace |
| CN110055363A (en) * | 2019-06-05 | 2019-07-26 | 山东钢铁股份有限公司 | A kind of device of the small set leakage of detection blast furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2596046B2 (en) | 1997-04-02 |
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