JPH065400Y2 - Blast furnace top loading device with heating device - Google Patents
Blast furnace top loading device with heating deviceInfo
- Publication number
- JPH065400Y2 JPH065400Y2 JP5337287U JP5337287U JPH065400Y2 JP H065400 Y2 JPH065400 Y2 JP H065400Y2 JP 5337287 U JP5337287 U JP 5337287U JP 5337287 U JP5337287 U JP 5337287U JP H065400 Y2 JPH065400 Y2 JP H065400Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- blast furnace
- raw material
- seal valve
- material powder
- 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
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は高炉炉頂装入装置に係り、シール弁、弁座への
原料粉付着を防止し気密性を保持させるとともに、流調
ゲート部の原料粉の堆積による駆動不能トラブル防止を
目的とした高炉炉頂装入装置に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a blast furnace top charging device, which prevents raw material powder from adhering to a seal valve and a valve seat to maintain airtightness and a flow control gate section. The present invention relates to a blast furnace top charging device for the purpose of preventing an inoperable trouble due to the accumulation of the raw material powder.
従来、シール弁においては、高炉用原料中の粉が弁体６
及び弁座７に固着生長し、そのため気密性が損われ、ガ
ス漏れが生じ、シール弁がガスカットされ、延いては高
炉の高圧操業が不可能になるという問題が生じていた。Conventionally, in the seal valve, the powder in the raw material for the blast furnace is the valve body 6
Also, there is a problem that airtightness is impaired due to sticking and growth on the valve seat 7, gas leakage occurs, the seal valve is gas-cut, and high-pressure operation of the blast furnace becomes impossible.
また、流調ゲート弁においては、原料粉の堆積による駆
動不能トラブルが生じていた。その原因としては、原料
中の水分、均圧時のＢガスミスト等の水分がケーシング
内で冷却されて凝結し、その水滴に原料粉が付着し、固
着すると考えられる。In addition, in the flow control gate valve, there was a problem that driving could not be performed due to the accumulation of raw material powder. It is considered that the cause is that water in the raw material and water such as B gas mist at the time of pressure equalization are cooled and condensed in the casing, and the raw material powder adheres to and adheres to the water droplets.
高炉の高圧操業に不可欠の設備として、上部及び下部シ
ール弁があり、高炉の定期修理周期を決定する律速条件
として、シール弁ゴムパッキン寿命すなわち、亀裂・変
形等の損傷があげられる。The upper and lower seal valves are indispensable facilities for high-pressure operation of the blast furnace, and the rate-limiting condition that determines the periodic repair cycle of the blast furnace is the seal valve rubber packing life, that is, damage such as cracking or deformation.
シール弁の機能を第６図のベルレス式高炉の例によって
説明する。高炉炉内１と固定ホッパー２との間の遮断弁
用として、下部シール弁３がある。一方、固定ホッパー
２と外部すなわち、大気圧の遮断弁用として、上部シー
ル弁４が配設されている。The function of the seal valve will be described with reference to the example of the bellless blast furnace shown in FIG. There is a lower seal valve 3 for a shutoff valve between the blast furnace interior 1 and the fixed hopper 2. On the other hand, an upper seal valve 4 is provided for the fixed hopper 2 and the outside, that is, for the shutoff valve for atmospheric pressure.
前記のベルレス高炉においては、固定ホッパー２内に原
料を投入するには、固定ホッパー２内の圧力を外部５と
等しい圧力すなわち、大気圧として上部シール弁４を開
放して原料装入を行なう。このとき、高炉炉内の圧力
は、常に大気圧よりも高い圧力、例えば１．２Kg/cm2に
保たれているので遮断しなければ高炉ガスが吹上がる。
この吹上げを防止するため、下部シール弁３によって、
高炉炉内１と固定ホッパー２とを遮断し、気密性を保持
する。In the bellless blast furnace, in order to charge the raw material into the fixed hopper 2, the pressure inside the fixed hopper 2 is made equal to that of the outside 5, that is, atmospheric pressure, and the upper seal valve 4 is opened to charge the raw material. At this time, the pressure in the blast furnace is always higher than atmospheric pressure, for example, 1.2 kg / cm 2 , so that the blast furnace gas blows up unless shut off.
In order to prevent this blowing up, the lower seal valve 3
The interior 1 of the blast furnace and the fixed hopper 2 are shut off to maintain airtightness.
一方、固定ホッパー２の中に貯えられた原料を高炉炉内
１に装入するには、固定ホッパー２の圧力を高炉炉内１
の圧力と等しく、すなわち、本例では１．２Kg/cm2にし
た後、下部シール弁３を開放して原料装入を行なう。On the other hand, in order to charge the raw material stored in the fixed hopper 2 into the blast furnace furnace 1, the pressure of the fixed hopper 2 is set to the blast furnace furnace 1
The pressure is made equal to the pressure of 1, ie, 1.2 kg / cm 2 in this example, and then the lower seal valve 3 is opened to charge the raw material.
このときには、上部シール弁４によって固定ホッパー２
と外部大気圧５とを遮断し、気密性を保持する。上部シ
ール弁４及び下部シール弁３は、第７図に示したスイン
グ式弁が一般的であって、弁体６と弁座７から構成され
ている。At this time, the fixed hopper 2 is moved by the upper seal valve 4.
And the external atmospheric pressure 5 are cut off to maintain airtightness. The upper seal valve 4 and the lower seal valve 3 are generally swing type valves shown in FIG. 7, and are composed of a valve body 6 and a valve seat 7.
従来技術としては、実公昭６０−１４０６１号公報に記
載されている、第８図に示す如く、弁体６にゴムパッキ
ン１０を装着して、気密性を保持させる一般的なものに
加えて、弁座７に外部のパージ源を連通したスリット１
１を設け、Ｂガス、Ｎ２ガスなどを噴射して、付着した
原料粉を吹き飛ばす方法が用いられている。As a conventional technique, as shown in FIG. 8 disclosed in Japanese Utility Model Publication No. 60-14061, in addition to a general one in which a rubber packing 10 is attached to the valve body 6 to maintain airtightness, Slit 1 in which an external purge source communicates with the valve seat 7
1 is provided, B gas, N 2 gas, etc. are jetted to blow off the adhering raw material powder.
しかしながら円形弁座７の全周にわたって均一にＢガス
などを噴射することが非常に困難であり、また原料粉は
水分を含有しているために残留し、さらにスリット１１
に原料粉が詰り、このため付着が増進するなどの欠点を
有していた。However, it is very difficult to evenly inject B gas or the like over the entire circumference of the circular valve seat 7, and the raw material powder remains because it contains water, and the slit 11
However, there is a defect that the raw material powder is clogged, and the adhesion is promoted.
又第９図は特開昭５５−９４４０７号公報に記載されて
いる、弁座７の外周に加熱素子１２を敷設したシール
弁、第１０図は、実公昭６０−１４０６１号公報に記載
される、シール弁の弁座７の内部に電熱線１３を内装し
たシール弁である。Further, FIG. 9 is a seal valve described in JP-A-55-94407, in which a heating element 12 is laid on the outer circumference of a valve seat 7, and FIG. 10 is described in JP-B-60-14061. The sealing valve has a heating wire 13 inside the valve seat 7 of the sealing valve.
前記の第９図及び第１０図のシール弁は、付着原料粉と
いえども乾燥して水分を含有していなければ自重により
自然落下することに注目し、この現象を応用したもので
あり、シール弁のシール機能には有効であるが、流調ゲ
ート弁の駆動不能トラブル防止の解決が望まれていた。The sealing valve shown in FIGS. 9 and 10 is an application of this phenomenon, paying attention to the fact that even if the adhered raw material powder is dry and does not contain water, it naturally falls due to its own weight. Although effective for the valve sealing function, it has been desired to solve the problem that the flow control gate valve cannot be driven.
また、付着原料粉を乾燥させる手段として電熱線等を用
いていることから、電力費がかかる等の問題があった。Further, since a heating wire or the like is used as a means for drying the adhered raw material powder, there is a problem in that it costs electricity.
本考案は、従来のシール弁の欠点を解消し、安価で効率
の良い加温装置を有し、シール弁の気密性を保持させ、
かつ流調ゲート部の原料粉の堆積による駆動不能トラブ
ル防止を図る加温装置を有する高炉炉頂装入装置を提供
するものである。The present invention eliminates the drawbacks of the conventional seal valve, has an inexpensive and efficient heating device, and keeps the seal valve airtight.
Further, the present invention provides a blast furnace top charging device having a heating device for preventing an inoperable trouble due to the accumulation of raw material powder in the flow control gate portion.
本考案は上記の問題点を解決するため高炉炉内を大気か
ら遮断するシール弁・流調ゲート弁を内包する高炉炉頂
装入装置において、シール弁廻り及び流調ゲート弁廻り
のケーシングに蒸気を用い外部から加温することによ
り、ケーシング内部の水分を含んだ湿潤原料粉を乾燥せ
しめ、自然落下する様にしたことを特徴とする。In order to solve the above problems, the present invention is a blast furnace top charging device that includes a seal valve and a flow control gate valve that shut off the inside of the blast furnace from the atmosphere, and steam is supplied to the casing around the seal valve and the flow control gate valve. It is characterized in that the wet raw material powder containing water inside the casing is dried by using an external heating method so as to be naturally dropped.
ここにシール弁等とはシール弁、流調弁をいう。シール
弁又は流調弁単体いずれでも良い。Here, the seal valve and the like mean a seal valve and a flow control valve. Either a seal valve or a flow control valve may be used alone.
次に本考案を第１図、第２図、第３図、第４図により説
明する。Next, the present invention will be described with reference to FIGS. 1, 2, 3, and 4.
第１図は下部シール弁３及び流調ゲート弁８のケーシン
グ９の外面に、銅管１５をトレースしたところを断面的
に示したものである。銅管１５は、第２図の如くケーシ
ング９の外面に蛇行状にトレースし、サドルバンド１６
にて第３図に示す如く固定し、末端にはスチームトラッ
プ２１を取付け、排水受２２を設ける。FIG. 1 is a cross-sectional view showing a trace of a copper pipe 15 on the outer surfaces of the casing 9 of the lower seal valve 3 and the flow control gate valve 8. The copper pipe 15 is traced in a meandering shape on the outer surface of the casing 9 as shown in FIG.
Then, it is fixed as shown in FIG. 3, a steam trap 21 is attached to the end, and a drain receiver 22 is provided.
更に第４図に示す如く、管１５とケーシング９の接触部
には、熱伝セメント１７を塗布し、スタッドボルト２０
にて、板状の保温材１８及び外装板１９を取付ける。Further, as shown in FIG. 4, heat transfer cement 17 is applied to the contact portion between the pipe 15 and the casing 9, and the stud bolt 20
Then, the plate-shaped heat insulating material 18 and the exterior plate 19 are attached.
本考案の高炉炉頂装入装置は、銅管１５に蒸気を通すこ
とにより、熱伝セメント１７を経てケーシング９が加温
され、シール弁においては、弁座７に伝熱し、弁座７の
表面から熱放散する。このため弁座７及び弁体６のゴム
パッキン１０に含水の原料粉が付着すると、前記放散熱
により原料粉中の水分は加熱され、蒸発除去され、原料
粉は乾燥し、自重により自然落下し、シール弁への原料
粉の付着を防止できる。In the blast furnace top charging device of the present invention, by passing steam through the copper pipe 15, the casing 9 is heated via the heat transfer cement 17, and in the seal valve, heat is transferred to the valve seat 7 and the valve seat 7 Dissipates heat from the surface. For this reason, when the water-containing raw material powder adheres to the valve seat 7 and the rubber packing 10 of the valve body 6, the moisture in the raw material powder is heated by the radiating heat and is evaporated and removed, and the raw material powder is dried and naturally falls due to its own weight. It is possible to prevent the raw material powder from adhering to the seal valve.
また、流調ゲート弁においては、原料粉は乾燥し自然落
下するため、原料粉の堆積による駆動不能トラブルを防
止できるように作用する。Further, in the flow control gate valve, the raw material powder is dried and naturally falls, so that it is possible to prevent an inoperable trouble due to the accumulation of the raw material powder.
弁座の中心径９７０mmのシール弁を有するケーシングの
外面に、外径８mmの銅管を５０mm〜８０mmの間隔で蛇行
状にトレースし、グラスウール保温材（厚さ２５mm）に
て外装し、銅管に１５０℃、７kg/cm2Ｇの蒸気を通し
た。この結果、大気温度２２℃において、弁座の表面温
度は、約５５℃に、ケーシング表面温度は５０℃〜６０
℃となり、シール弁の弁座には、原料粉が付着せず、常
に良好な気密性を保持できた。On the outer surface of the casing having a seal valve with a central diameter of 970 mm of the valve seat, copper pipes with an outer diameter of 8 mm are traced in a meandering shape at intervals of 50 mm to 80 mm, and are covered with glass wool heat insulating material (thickness: 25 mm). Steam of 7 kg / cm 2 G was passed through the reactor at 150 ° C. As a result, at an atmospheric temperature of 22 ° C, the valve seat surface temperature is about 55 ° C and the casing surface temperature is 50 ° C to 60 ° C.
C., the raw material powder did not adhere to the valve seat of the seal valve, and good airtightness could always be maintained.
第５図は、下部シール弁差圧推移を示したグラフであ
る。FIG. 5 is a graph showing changes in the differential pressure of the lower seal valve.
上記の実施例からも明らかな如く、本考案は高炉用シー
ル弁廻りのケーシングを蒸気を用い、外部から加温する
ことによって、シール弁においては、原料粉の付着を防
止し、高度の気密性を保持する効果をあげることができ
た。As is apparent from the above-described embodiments, the present invention uses steam to heat the casing around the seal valve for the blast furnace from the outside, so that the raw material powder is prevented from adhering to the seal valve to achieve a high degree of airtightness. I was able to increase the effect of holding.
また、流調ゲート弁においては、原料粉の堆積量が４５
日間で従来の1/3〜1/4に減量となり、その結果、流調ゲ
ート弁駆動不能トラブルを防止するとともに、高炉の定
期修理周期を延長することができた。Further, in the flow control gate valve, the amount of the raw material powder deposited is 45
The amount was reduced to one-third to one-fourth of that of conventional ones, and as a result, it was possible to prevent the trouble that the flow control gate valve could not be driven and to extend the periodic repair cycle of the blast furnace.
従来の技術である弁座を電熱線により、加熱する方法に
対し、本考案は工場蒸気を用いて加温することで、電力
費がかからないため、コスト削減を図ることができ、し
かも流調ゲート弁駆動不能トラブルにも有効である。In contrast to the conventional method of heating the valve seat with a heating wire, the present invention uses factory steam to heat it, so that it does not cost electric power, so it is possible to reduce the cost and the flow control gate. It is also effective for troubles where the valve cannot be driven.
以上ベルレス式高炉の下部シール弁の例によって説明し
たが、上部シール弁にも適用できる。尚、本考案はケー
シング外面に蒸気管をトレースしたが、ケーシングを二
重構造にし、空洞内に蒸気を通してもよい。Although the example of the lower seal valve of the bellless blast furnace has been described above, the present invention is also applicable to the upper seal valve. In the present invention, the steam pipe is traced on the outer surface of the casing, but the casing may have a double structure and steam may be passed through the cavity.
第１図はシール弁・流調ゲート弁ケーシングの蒸気トレ
ース断面図、第２図、第３図、第４図は蒸気管トレース
の説明図、第５図は蒸気加温前後の下部シール弁の差圧
推移を表わしたグラフ、第６図はベルレス式高炉の炉頂
装置の全体説明図、第７図は従来のベルレス式高炉のシ
ール弁側面図、第８図は従来のシール弁の部分拡大図、
第９図、第１０図は従来のシール弁の部分拡大図であ
る。 １……高炉、２……固定ホッパー ３……下部シール弁、４……上部シール弁 ５……外部、６……弁体 ７……弁座、８……流調ゲート弁 ９……ケーシング、１０……ゴムパッキン １１……スリット、１５……銅管 １７……熱伝セメントFIG. 1 is a steam trace cross-sectional view of a seal valve / flow control gate valve casing, FIGS. 2, 3, and 4 are explanatory views of a steam pipe trace, and FIG. 5 is a lower seal valve before and after steam heating. Fig. 6 is a graph showing the transition of the differential pressure, Fig. 6 is an overall explanatory view of the top device of the bellless blast furnace, Fig. 7 is a side view of the seal valve of the conventional bellless blast furnace, and Fig. 8 is a partial enlargement of the conventional seal valve. Figure,
9 and 10 are partially enlarged views of a conventional seal valve. 1 ... Blast furnace, 2 ... Fixed hopper 3 ... Lower sealing valve, 4 ... Upper sealing valve, 5 ... External, 6 ... Valve body, 7 ... Valve seat, 8 ... Flow control gate valve, 9 ... Casing 10 ... Rubber packing 11 ... Slit, 15 ... Copper tube 17 ... Heat transfer cement
Claims (1)
内包する部位のケーシング面に、蒸気を用いた外部から
の加温装置を有することを特徴とする加熱装置を有する
高炉炉頂装入装置。1. A blast furnace top loading device having a heating device, characterized in that, in a blast furnace top loading device, a casing surface of a portion including a seal valve or the like has a heating device from the outside using steam. Input device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5337287U JPH065400Y2 (en) | 1987-04-10 | 1987-04-10 | Blast furnace top loading device with heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5337287U JPH065400Y2 (en) | 1987-04-10 | 1987-04-10 | Blast furnace top loading device with heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63162852U JPS63162852U (en) | 1988-10-24 |
| JPH065400Y2 true JPH065400Y2 (en) | 1994-02-09 |
Family
ID=30879375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5337287U Expired - Lifetime JPH065400Y2 (en) | 1987-04-10 | 1987-04-10 | Blast furnace top loading device with heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065400Y2 (en) |
-
1987
- 1987-04-10 JP JP5337287U patent/JPH065400Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63162852U (en) | 1988-10-24 |
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