JPH075943B2 - Cooling equipment for the furnace top charging device - Google Patents
Cooling equipment for the furnace top charging deviceInfo
- Publication number
- JPH075943B2 JPH075943B2 JP5512086A JP5512086A JPH075943B2 JP H075943 B2 JPH075943 B2 JP H075943B2 JP 5512086 A JP5512086 A JP 5512086A JP 5512086 A JP5512086 A JP 5512086A JP H075943 B2 JPH075943 B2 JP H075943B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- machine room
- furnace
- cooling
- casing
- 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 - Lifetime
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- Blast Furnaces (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、堅型炉の炉頂装入装置に係り、特に炉体頂部
の原料装入用シュートを旋回動させる機械室を冷却する
ための炉頂装入装置の冷却設備に関するものである。Description: TECHNICAL FIELD The present invention relates to a furnace top charging device for a tight-fitting furnace, and particularly for cooling a machine room in which a raw material charging chute at the top of the furnace body is swung. The present invention relates to the cooling equipment for the furnace top charging device.
［従来の技術］ 従来、高炉等の堅型炉には、その炉体内に原料を装入す
るためのシュートが設けられ、炉体頂部にはそのシュー
トを旋回動させるための機械室が形成されている。[Prior Art] Conventionally, a solid furnace such as a blast furnace is provided with a chute for charging raw materials into the furnace body, and a machine room for rotating the chute is formed at the top of the furnace body. ing.
この機械室は炉内の高温から保護すべく冷却される。This machine room is cooled to protect it from the high temperatures inside the furnace.
従来の炉頂装入装置の冷却設備を第４図により説明す
る。The conventional cooling equipment for the furnace top charging device will be described with reference to FIG.
第４図において、ａは炉体で、その炉体ａの頂部に、炉
体ａ内に原料装入用シュートｂが旋回自在に設けられ、
その外周の炉頂にシュートｂを旋回傾動運転させるため
の機械室ｃが形成される。機械室ｃは底板ｄとケーシン
グｅとで区画される。In FIG. 4, a is a furnace body, and a raw material charging chute b is rotatably provided in the furnace body a at the top of the furnace body a.
A machine room c for rotating and tilting the chute b is formed at the furnace top on the outer periphery thereof. The machine room c is partitioned by a bottom plate d and a casing e.
機械室ｃの冷却は、高炉ガスを除塵器ｆ、ベンチュリー
スクラバーｇを通して清浄化し、そのベンチュリースク
ラバーｇから他の高炉ガス利用設備供給系ｈへ送る途中
にベンチュリースクラバーｇから分岐させ、半清浄ガス
状態で配管ｉを通してミニベンチュリースクラバーｊに
供給して清浄化させ、その清浄化ガスを、水封圧縮機ｋ
よりミストセパレータｌを通じ配管ｍを介して機械室ｃ
に供給し冷却するものである。For cooling the machine room c, the blast furnace gas is cleaned through a dust remover f and a venturi scrubber g, and is branched from the venturi scrubber g while being sent from the venturi scrubber g to another blast furnace gas utilization facility supply system h, and is in a semi-clean gas state. Is supplied to the mini venturi scrubber j through a pipe i for cleaning, and the purified gas is supplied to the water ring compressor k.
Machine room c through pipe m through mist separator l
Is supplied to and cooled.
ミニベンチュリースクラバーｊと水封圧縮機ｋには水配
管ｎにより水が供給され、清浄化ガスがその水により冷
却されたのち、ミストセパレータｌでミスト分が除去さ
れ冷却ガスとなって配管ｍを介して機械室ｃに供給され
る。Water is supplied to the mini-venturi scrubber j and the water-sealed compressor k through a water pipe n, and the purified gas is cooled by the water. It is supplied to the machine room c via.
機械室ｃの底板ｄとケーシングｅ間には、隙間δ1,δ２
が形成され、機械室ｃに導入され機械室ｃ内の機器を冷
却した後のガスが、隙間δ1,δ２を通じて炉体ａ内に吹
き出されるようになっている。Between the bottom plate d of the machine room c and the casing e, gaps δ 1 , δ 2
Is formed, and the gas after being introduced into the machine room c and cooling the equipment in the machine room c is blown into the furnace body a through the gaps δ 1 and δ 2 .
［発明が解決しようとする問題点］ しかしながら、除塵器ｆ、ベンチュリースクラバーｇの
後から取り出した高炉ガスを、一部分岐して水封圧縮機
ｋで機械室ｃに送るため、配管i,mが長くなる。すなわ
ち、除塵器ｆ、ベンチュリースクラバーｇ、水封圧縮機
ｋなどは地上設置となり、一方、機械室ｃは炉頂に位置
するため、その配管i,mが長くなり、しかも配管長が長
くなることで圧力損失が大きくなり水封圧縮機ｋが大型
化する問題がある。[Problems to be Solved by the Invention] However, since the blast furnace gas taken out after the dust remover f and the venturi scrubber g is partially branched and sent to the machine room c by the water seal compressor k, the pipes i and m are become longer. That is, the dust remover f, the venturi scrubber g, the water seal compressor k, etc. are installed on the ground, while the machine room c is located at the top of the furnace, so that the pipes i, m are long and the pipe length is long. Therefore, there is a problem that the pressure loss becomes large and the water-sealed compressor k becomes large.
またミニベンチュリースクラバーｊで半清浄ガスを清浄
するが、清浄化ガス中には微量のダストが含まれてお
り、これが機械室ｃに導入されると、その機器の歯車面
に付着し、歯面の摩耗などに悪影響をおよぼす。In addition, the semi-clean gas is cleaned with the mini-venturi scrubber j, but the cleaning gas contains a small amount of dust, and when this is introduced into the machine room c, it adheres to the gear surface of the equipment and the tooth surface. It has a bad effect on wear of the.
本発明は、上記事情を考慮してなされたもので、冷却ガ
スを流す配管長が短くてすみ、しかも冷却ガス中にダス
トなどが含まれないようにした炉頂装入装置の冷却設備
を提供することを目的とする。The present invention has been made in consideration of the above circumstances, and provides a cooling facility for a furnace top charging device in which the length of a pipe for flowing a cooling gas is short and dust is not contained in the cooling gas. The purpose is to do.
［問題点を解決するための手段］ 本発明は、上記の目的を達成すために、炉体頂部に原料
装入用シュートを旋回自在に設け、炉体頂部にそのシュ
ートを旋回動させる機械室を形成すると共にその機械室
を回転自在な底板とケーシングで覆って形成した炉頂装
入装置において、上記機械室の底板とケーシングとをガ
ス遮断装置で連結し、該ケーシングに冷却ガス用出入口
を設け、その出口から入口に至る循環路に、ガス冷却
器、送風機及びガス圧力調整弁を接続して構成したもの
である。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a machine room in which a raw material charging chute is provided at the top of a furnace body so that the chute can be freely rotated, and the chute is moved at the top of the furnace body. In the furnace top charging device which is formed by covering the machine room with a rotatable bottom plate and a casing, the machine chamber bottom plate and the casing are connected by a gas shutoff device, and a cooling gas inlet / outlet is connected to the casing. A gas cooler, a blower, and a gas pressure adjusting valve are connected to a circulation path extending from the outlet to the inlet.
［作 用］ 本発明の炉頂装入装置の冷却設備においては、機械室内
のガスを循環路で循環するため、冷却ガス中にダストが
含まれず、しかも冷却ガスを繰返しガス冷却器で冷却し
て循環するため設備を小型化でき、炉頂付近に設置でき
ると共にその配管長も短くできる。[Operation] In the cooling equipment of the furnace top charging device of the present invention, since the gas in the machine room is circulated in the circulation path, the cooling gas does not contain dust, and the cooling gas is repeatedly cooled by the gas cooler. Since it is circulated, the equipment can be downsized, it can be installed near the furnace top, and the piping length can be shortened.
［実施例］ 以下、本発明に係る炉頂装入装置の冷却設備の好適一実
施例を添付図面に基づいて説明する。[Embodiment] A preferred embodiment of the cooling equipment of the furnace top charging device according to the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の炉頂装入装置の冷却設備の全体図を示
し、図において、１は高炉など堅型炉の炉体で、その炉
体１に原料を装入するための原料装入用シュート２が旋
回自在で、かつ傾動自在に設けられ、そのシュート２の
外周の炉体１上にシュート２を旋回・傾動運転するため
の機械室３が形成される。機械室３は、機械室３と炉体
１内とを仕切る回転自在な底板４と、炉体１上に設けら
れたケーシング５とにより区画形成され、その中央に均
圧室内（図示せず）などからの原料を原料装入用シュー
ト２へ供給するための開口６が形成され、均圧室から案
内管（図示せず）などを通じて原料がシュート２へ供給
される。FIG. 1 shows an overall view of the cooling equipment of the furnace top charging device of the present invention. In FIG. 1, reference numeral 1 denotes a furnace body of a rigid furnace such as a blast furnace, which is a raw material charging device for charging raw materials into the furnace body 1. The input chute 2 is provided so as to be rotatable and tiltable, and a machine room 3 for performing a turning / tilting operation of the chute 2 is formed on the furnace body 1 on the outer periphery of the chute 2. The machine room 3 is defined by a rotatable bottom plate 4 that partitions the machine room 3 from the inside of the furnace body 1, and a casing 5 provided on the furnace body 1, and a pressure equalizing room (not shown) is formed in the center thereof. An opening 6 for supplying the raw material from the above to the raw material charging chute 2 is formed, and the raw material is supplied from the pressure equalizing chamber to the chute 2 through a guide tube (not shown) or the like.
シュート２は、上記案内管或いは底板４に連結され、機
械室３内の機器にて旋回動されると共に傾動され、炉体
１への原料を均一に投入できるようになっている。The chute 2 is connected to the guide tube or the bottom plate 4 and is rotated and tilted by the equipment in the machine room 3 so that the raw material can be uniformly charged into the furnace body 1.
底板４とケーシング５とはガス遮断装置７とにより接続
される。すなわち、例えば図示のように開口６側の底板
４に環状の水封槽８が形成され、その水封槽８にケーシ
ング５の内側壁5aが浸されて内側ガス遮断装置7aが形成
され、またケーシング５の外周側に環状の水封槽９が形
成され、その水封槽９に底板４の外周壁4bが浸されて外
側ガス遮断装置7bが形成される。The bottom plate 4 and the casing 5 are connected by a gas shutoff device 7. That is, for example, as shown in the drawing, an annular water sealing tank 8 is formed on the bottom plate 4 on the opening 6 side, and the inner side wall 5a of the casing 5 is immersed in the water sealing tank 8 to form the inner gas shutoff device 7a. An annular water sealing tank 9 is formed on the outer peripheral side of the casing 5, and the outer peripheral wall 4b of the bottom plate 4 is immersed in the water sealing tank 9 to form an outer gas blocking device 7b.
底板４はケーシング５よりスラスト軸常板10により連結
される。The bottom plate 4 is connected from a casing 5 by a thrust shaft normal plate 10.
ケーシング５には機械室３内のガスの出口11が設けられ
ると共に入口12が設けられ、その出口11と入口12とが配
管13,14で接続されて循環路15が形成される。この循環
路15にはその出口11側よりガス冷却器16、バランスタン
ク17、送風機18が順に接続される。The casing 5 is provided with an outlet 11 for the gas in the machine room 3 and an inlet 12, and the outlet 11 and the inlet 12 are connected by pipes 13 and 14 to form a circulation path 15. A gas cooler 16, a balance tank 17, and a blower 18 are sequentially connected to the circulation path 15 from the outlet 11 side.
送風機18から入口12に至る配管14には機械室３内へ供給
する冷却ガスの圧力を調整するガス圧力調整装置19が接
続される。A gas pressure adjusting device 19 for adjusting the pressure of the cooling gas supplied into the machine chamber 3 is connected to the pipe 14 extending from the blower 18 to the inlet 12.
このガス圧力調整装置19は、送風機18の吐出ガスを大気
又は炉体１内に放出する逃し弁20と、吐出ガスをバラン
スタンク17に戻す戻し弁21とからなる。The gas pressure adjusting device 19 includes a relief valve 20 that discharges the gas discharged from the blower 18 to the atmosphere or the inside of the furnace body 1, and a return valve 21 that returns the discharged gas to the balance tank 17.
入口12側には冷却ガス温度計測装置22が接続され、その
検出温でガス冷却器16の冷却用水配管16aの冷却水量が
調節される。バランスタンク17にはN2ガスなどの冷却用
ガスのガス補充装置23が接続される。A cooling gas temperature measuring device 22 is connected to the inlet 12 side, and the amount of cooling water in the cooling water pipe 16a of the gas cooler 16 is adjusted by the detected temperature. A gas replenishing device 23 for cooling gas such as N 2 gas is connected to the balance tank 17.
機械室３と炉体１内の圧力は、機械室差圧計測装置24で
検出され、また送風機18の吐出側と吸込側の圧力は、送
風用差圧計測装置25で検出され、これら差圧計測装置2
4,25でガス圧力調整装置19、すなわち、逃し弁20と戻し
弁21が制御される。The pressure in the machine room 3 and the furnace body 1 is detected by the machine room differential pressure measuring device 24, and the pressure on the discharge side and the suction side of the blower 18 is detected by the blower differential pressure measuring device 25. Measuring device 2
At 4,25 the gas pressure regulator 19, ie the relief valve 20 and the return valve 21, is controlled.
次に本実施例の作用を説明する。Next, the operation of this embodiment will be described.
機械室３内の機器により原料装入用シュート２が旋回或
いは傾動運転され炉体１内に原料が投入される。The raw material charging chute 2 is swung or tilted by the equipment in the machine room 3 to feed the raw material into the furnace body 1.
この際、機械室３は炉体１から開口６を通して上昇する
高炉ガスにより加熱された状態にある。At this time, the machine room 3 is in a state of being heated by the blast furnace gas rising from the furnace body 1 through the opening 6.
機械室３内のガスは出口13より循環路15を通り、ガス冷
却器16で冷却され、バランスタンク17より送風機18を介
して入口12に供給され、冷却ガスとして機械室３に戻さ
れ、その各機器の上昇温度を防止し、再度上述のように
冷却循環される。The gas in the machine room 3 passes through the circulation path 15 from the outlet 13, is cooled by the gas cooler 16, is supplied from the balance tank 17 to the inlet 12 via the blower 18, and is returned to the machine room 3 as cooling gas. The rising temperature of each device is prevented, and the cooling circulation is performed again as described above.
この場合、機械室用差圧計測装置24は機械室３と炉体１
内の差圧を検出し、炉内ガスが機械室３に侵入しないよ
う機械室３の圧力を炉内より多少高目となるよう逃し弁
20と戻し弁21の開度を制御する。すなわち、機械室３と
炉内の圧力が設定差圧であれば両弁20,21を閉じたまま
とし、その設定差圧よりやや高い差圧であれば戻し弁21
の開度を制御して送風機18の能力を調整し、設定差圧よ
りも高圧差であれば逃し弁20を開として冷却ガスを循環
路15から放出する。In this case, the machine room differential pressure measuring device 24 includes the machine room 3 and the furnace body 1.
Relief valve that detects the pressure difference in the furnace and keeps the pressure in the machine room 3 slightly higher than in the furnace so that the gas in the furnace does not enter the machine room 3.
20 and the opening degree of the return valve 21 are controlled. That is, if the pressure difference between the machine chamber 3 and the furnace is the set differential pressure, both valves 20 and 21 are kept closed, and if the differential pressure is slightly higher than the set differential pressure, the return valve 21
The opening of the blower 18 is controlled to adjust the capacity of the blower 18, and if the pressure difference is higher than the set pressure difference, the relief valve 20 is opened and the cooling gas is discharged from the circulation path 15.
また送風用圧力計測装置25は、戻し弁21の開度を制御
し、その送風能力を調整する。Further, the blower pressure measuring device 25 controls the opening degree of the return valve 21 and adjusts the blowing ability thereof.
機械室３内或いは循環路15から冷却用ガスが洩れなどで
圧力が降下した場合には、機械室用差圧計測装置24が、
その設定差圧値以下であることを検出し、ガス補充装置
23を制御してバランスタンク17に冷却用ガスを補充す
る。またバランスタンク17は、弁20,21の開閉作動時に
送風機18の吸込側圧が過度の負圧になりガス圧バランス
がとれなくなることを防止する。When the pressure drops due to leakage of cooling gas from the machine room 3 or the circulation path 15, the machine room differential pressure measuring device 24
Gas replenishing device that detects that the pressure difference is less than the set differential pressure value
23 is controlled to replenish the balance tank 17 with cooling gas. Further, the balance tank 17 prevents the suction side pressure of the blower 18 from becoming an excessive negative pressure when the valves 20 and 21 are opened and closed and the gas pressure is not balanced.
この機械室３を冷却する冷却用ガスは、N2ガス等の機械
室３内の機器に悪影響をおよぼさないよる清浄なガスを
用いる。As the cooling gas for cooling the machine room 3, a clean gas such as N 2 gas that does not adversely affect the equipment in the machine room 3 is used.
第２図、第３図は本発明において底板４とケーシング５
を接続するガス遮断装置７の例を示すもので、第２図
は、底板４とケーシング５の接合部にラビリンスパッキ
ン26を設けてガス遮断装置７を構成したものである。ま
た第３図のガス遮断装置７は、底板４とケーシング５と
をメカニカルシール27で接続し、その接続部にメカニカ
ルシール27で接続し、その加圧ガス28からのガスをメカ
ニカルシール27を介して炉体１側に逃すようにしたもの
である。2 and 3 show the bottom plate 4 and the casing 5 in the present invention.
FIG. 2 shows an example of a gas shutoff device 7 for connecting the above components. FIG. 2 shows the gas shutoff device 7 provided with a labyrinth packing 26 at the joint between the bottom plate 4 and the casing 5. Further, in the gas shutoff device 7 of FIG. 3, the bottom plate 4 and the casing 5 are connected by a mechanical seal 27, the connecting portion is connected by a mechanical seal 27, and the gas from the pressurized gas 28 is passed through the mechanical seal 27. It is made to escape to the furnace body 1 side.
［発明の効果］ 以上詳述してきたことから明らかなように本発明によれ
ば次のごとき優れた効果を発揮する。[Effects of the Invention] As is clear from the above description, according to the present invention, the following excellent effects are exhibited.
（１） 機械室を区画する底板とケーシング間をガス遮
断装置で接続し、そのケーシングに冷却用ガスの出入口
を設けると共に冷却用ガスの循環路を接続し、その出口
からのガスを冷却して機械室に循環するようにしたの
で、機械室にダストが侵入することを防ぎ、機械室内の
機器を安定運転させることができる。(1) The bottom plate that divides the machine room and the casing are connected by a gas shutoff device, the casing is provided with a cooling gas inlet / outlet, a cooling gas circulation path is connected, and the gas from the outlet is cooled. Since it circulates in the machine room, it is possible to prevent dust from entering the machine room and to stably operate the equipment in the machine room.
（２） 機械室内のガスを冷却循環するため、設備が小
型化でき、炉頂装入装置の近くに設置できるため、その
配管長を短くでき、コストを低減できる。(2) Since the gas in the machine room is cooled and circulated, the equipment can be downsized and can be installed near the furnace top charging device, so that the pipe length can be shortened and the cost can be reduced.
（３） 配管長を短くできるので、圧力損失が少なく、
送風機を小型化できる。(3) Since the pipe length can be shortened, pressure loss is small,
The blower can be downsized.
第１図は本発明の炉頂装入装置の冷却設備の一実施例を
示す全体図、第２図、第３図は夫々本発明におけるガス
遮断装置の他の例を示す断面図、第４図は従来例を示す
図である。 図中、１は炉体、２は原料装入用シュート、３は機械
室、４は底板、５はケーシング、７はガス遮断装置、11
は出口、12は入口、15は循環路、16はガス冷却器、18は
送風機、19はガス圧力調整装置である。FIG. 1 is an overall view showing an embodiment of the cooling equipment of the furnace top charging device of the present invention, FIG. 2 and FIG. 3 are sectional views showing other examples of the gas shutoff device of the present invention, respectively. The figure shows a conventional example. In the figure, 1 is a furnace body, 2 is a raw material charging chute, 3 is a machine room, 4 is a bottom plate, 5 is a casing, 7 is a gas shutoff device, and 11
Is an outlet, 12 is an inlet, 15 is a circulation path, 16 is a gas cooler, 18 is a blower, and 19 is a gas pressure adjusting device.
Claims (1)
に設け、炉体頂部にそのシュートを旋回動させる機械室
を形成すると共にその機械室を回転自在な底板とケーシ
ングで覆って形成した炉頂装入装置において、上記機械
室の底板とケーシングとをガス遮断装置で接続し、該ケ
ーシングに冷却ガス用出入口を設け、その出口から入口
に至る循環路にガス冷却器、送風機及びガス圧力調整装
置を接続したことを特徴とする炉頂装入装置の冷却設
備。1. A raw material charging chute is rotatably provided at the top of the furnace body, and a machine room for turning the chute is formed at the top of the furnace body, and the machine room is covered with a rotatable bottom plate and a casing. In the above furnace top charging device, the bottom plate of the machine room and the casing are connected by a gas shutoff device, the casing is provided with a cooling gas inlet / outlet, and a gas cooler, a blower and a gas are provided in a circulation path from the outlet to the inlet. Cooling equipment for the furnace top charging device, which is connected with a pressure adjusting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5512086A JPH075943B2 (en) | 1986-03-14 | 1986-03-14 | Cooling equipment for the furnace top charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5512086A JPH075943B2 (en) | 1986-03-14 | 1986-03-14 | Cooling equipment for the furnace top charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62214111A JPS62214111A (en) | 1987-09-19 |
| JPH075943B2 true JPH075943B2 (en) | 1995-01-25 |
Family
ID=12989895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5512086A Expired - Lifetime JPH075943B2 (en) | 1986-03-14 | 1986-03-14 | Cooling equipment for the furnace top charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075943B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100891838B1 (en) * | 2002-09-12 | 2009-04-07 | 주식회사 포스코 | Apparatus for controlling flow rate of cooling water in drive unit of blast furnace |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100971986B1 (en) | 2003-07-31 | 2010-07-23 | 주식회사 포스코 | Apparatus for flushing the high pressure water to make the high-effective cooling system of the drive unit in the blast furnace system |
| CN109439823B (en) * | 2019-01-11 | 2024-04-05 | 中冶赛迪工程技术股份有限公司 | Cooling device for blast furnace top distributor |
-
1986
- 1986-03-14 JP JP5512086A patent/JPH075943B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100891838B1 (en) * | 2002-09-12 | 2009-04-07 | 주식회사 포스코 | Apparatus for controlling flow rate of cooling water in drive unit of blast furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62214111A (en) | 1987-09-19 |
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