JPH068988Y2 - Bellless charging device cooling water pipe clogging prevention device - Google Patents
Bellless charging device cooling water pipe clogging prevention deviceInfo
- Publication number
- JPH068988Y2 JPH068988Y2 JP6117688U JP6117688U JPH068988Y2 JP H068988 Y2 JPH068988 Y2 JP H068988Y2 JP 6117688 U JP6117688 U JP 6117688U JP 6117688 U JP6117688 U JP 6117688U JP H068988 Y2 JPH068988 Y2 JP H068988Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- trough
- cooling
- annular
- nozzle
- 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
Links
- 239000000498 cooling water Substances 0.000 title claims description 10
- 230000002265 prevention Effects 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- 238000001816 cooling Methods 0.000 claims description 29
- 239000000428 dust Substances 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 11
- 210000003027 ear inner Anatomy 0.000 description 8
- 239000002994 raw material Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Description
【考案の詳細な説明】 〈産業上の利用分野〉 本考案は、高炉の炉頂に配設されるベルレス式装入装置
の冷却装置の冷却水配管詰り防止装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cooling water pipe clogging prevention device for a cooling device of a bellless charging device disposed at the top of a blast furnace.
〈従来の技術〉 高炉において、鉱石やコークス等の原材料（以下原料と
略す）を炉内に装入する際に用いられる炉頂装入装置と
して、ベル式炉頂装入装置が知られている。このベルレ
ス式炉頂装入装置は、炉内に設けた分配シュートを連続
的に旋回、傾動させて原料を分配装入するものであり、
通常のベル式装入装置に比べて全体がコンパクトにで
き、比較的設備費が低廉で済むことや原料の分配の自由
度が大きいことから最近多く採用され始めている。<Prior Art> Bell type furnace top charging device is known as a furnace top charging device used when charging raw materials (hereinafter referred to as raw materials) such as ore and coke in a blast furnace. . This bellless type furnace top charging device is a device for distributing and charging raw materials by continuously turning and tilting a distribution chute provided in the furnace,
Compared to a normal bell-type charging device, it can be made compact as a whole, the equipment cost is relatively low, and the degree of freedom in distributing raw materials is great, so that it has been widely adopted recently.
しかしながら、ベルレス式炉頂装入装置は炉芯の直上に
配置されており、内部の機器類を熱や炉内ダストから保
護するために多量の冷却用清浄ガス（通常6000〜10000N
m3／ｈのN2ガス又は高炉ガス）を供給しなければなら
ず、膨大な維持費を必要としていた。However, the bellless furnace top charging device is located directly above the furnace core, and a large amount of clean gas for cooling (usually 6000 to 10000N
It was necessary to supply m 3 / h of N 2 gas or blast furnace gas), which required enormous maintenance costs.
この欠点を補うものとしては特開昭59-116306号公報に
示されるようなベルレス式装入装置の水冷装置が提示さ
れている。これは装入装置内部の回転シェル３に水冷蛇
間17の冷却パネル６を組み込み、かつ前記回転シェル３
にラビリンス11，12及び14を配置し冷却とダストシール
を行わせしめガスによる冷却を中止しようとするもので
あり、一部の小型高炉で既に実施されている。その概要
を第４図に示す。図において、高炉マンテル１の上部の
ケーシング２の内部において、回転シェル３は旋回輪軸
受４で回転自在に支持されていて、回転シェル３を動力
伝達系５により回転駆動することにより分配シュートを
旋回する。回転シェル３の炉外側には冷却パネル６ａ，
６ｂを配し、給水ノズル７から回転シェル３の上部に設
けた環状旋回トラフ８内に給水し、冷却パネル６ａ，６
ｂを通じて回転シェル及びそれに付随する機器類を冷却
し、冷却後の水をケーシング下部に設けた環状固定トラ
フ９に受けて排水管10から外部へ排出する構造になって
いる。なお、図中11はラビリンスプレート、12は下部ラ
ビリンス、13は下部リング状仕切板であり、14は上部ラ
ビリンスである。As a means for compensating for this drawback, a water cooling device of a bellless charging device as disclosed in JP-A-59-116306 is proposed. This is to install the cooling panel 6 of the water cooling interspace 17 into the rotating shell 3 inside the charging device, and
Labyrinths 11, 12 and 14 are installed in the plant to perform cooling and dust sealing to stop the cooling by gas, which has already been implemented in some small blast furnaces. The outline is shown in FIG. In the figure, inside the casing 2 above the blast furnace mantel 1, the rotating shell 3 is rotatably supported by a slewing ring bearing 4, and the rotating shell 3 is rotationally driven by a power transmission system 5 to rotate the distribution chute. To do. On the outside of the furnace of the rotating shell 3, a cooling panel 6a,
6b is arranged, and water is supplied from the water supply nozzle 7 into the annular swirling trough 8 provided on the upper part of the rotating shell 3, and the cooling panels 6a, 6
The rotating shell and its associated devices are cooled through b, and the cooled water is received by an annular fixed trough 9 provided at the lower part of the casing and discharged from a drain pipe 10 to the outside. In the figure, 11 is a labyrinth plate, 12 is a lower labyrinth, 13 is a lower ring-shaped partition plate, and 14 is an upper labyrinth.
〈考案が解決しようとする課題〉 しかしながら、この水冷装置を大型高炉に適用した場合
には次のような問題が発生して実用に供することが困難
であった。<Problems to be Solved by the Invention> However, when this water cooling device is applied to a large blast furnace, the following problems occur and it is difficult to put it into practical use.
高炉の操業においては若干の高頂圧の変動が不可避であ
るが、その度に装入装置内部と炉内との圧力バランスが
崩れて微少なガス流れがラビリンスに発生する。大型高
炉の場合、炉中心部のガス中に含まるダストの濃度が小
型高炉に比べて高く、このガス中のダストが上部の環状
旋回トラフ８の上を通過する際に湿気を帯びて環状旋回
トラフ８の側壁あるいは上部のケーシング２の一部に付
着成長し塊状の付着ダスト22になるが、これがある程度
の大きさになると環状旋回トラフ８の中に落下し堆積ダ
スト24になり、この環状旋回トラフ８の下流に接続され
た排水管16、或いは更に下流の水冷パネル６ａ，６ｂ内
の水冷蛇管17内に詰り閉塞を起こすという問題が発生し
た。冷却配管が閉塞した場合には回転シェル３の冷却が
不可能になり、同シェルの熱変形あるいは同シェルを支
持している旋回輪軸受４の熱膨張により旋回が不可能に
なるので、高炉操業が継続できなくなるといった極めて
大きなトラブルに直結していた。In the operation of the blast furnace, some fluctuations in the high top pressure are unavoidable, but each time, the pressure balance between the inside of the charging device and the inside of the furnace is lost, and a minute gas flow is generated in the labyrinth. In the case of a large blast furnace, the concentration of dust contained in the gas in the center of the furnace is higher than in the small blast furnace, and when the dust in this gas passes over the upper annular swirling trough 8, it becomes moist and makes an annular swirl. The attached dust grows on the side wall of the trough 8 or a part of the casing 2 on the upper side and becomes the attached dust 22 in a lump form. When the attached dust 22 becomes a certain size, it falls into the annular turning trough 8 and becomes the accumulated dust 24. There was a problem that the drainage pipe 16 connected to the downstream of the trough 8 or the water-cooling flexible pipe 17 in the water-cooling panels 6a and 6b further downstream was clogged and blocked. When the cooling pipe is blocked, the rotating shell 3 cannot be cooled, and the swirling becomes impossible due to thermal deformation of the shell or thermal expansion of the slewing ring bearing 4 supporting the shell, so that the blast furnace operation is performed. Was directly connected to an extremely large problem such as being unable to continue.
本考案は、上記の問題点を完全に解決し、大型高炉にお
いても使用可能なベルレス式装入装置の水冷装置を提供
するためになされたものである。The present invention has been made to completely solve the above problems and provide a water cooling device of a bellless charging device that can be used even in a large blast furnace.
〈課題を解決するための手段〉 本考案は、高炉炉頂部ケーシング内の回転シェルに配
置されたベルレス式装入装置の冷却装置において、前記
回転シェルの上部に設けられた環状旋回トラフから回転
シェルの周囲に設けられた水冷パネルに取水する配水管
の上部にオーバーフローノズルを配設し、前記環状旋回
トラフからの取水水位を該トラフ底面より上部に位置さ
せると共に、該トラフの上に設けられた固定ケーシング
から前記取水水位より下部まで達するようなリング状仕
切板を取水部よりも炉心側に配設した冷却水配管詰り防
止装置であり、環状旋回トラフ上部の固定ケーシング
の、リング状仕切板とオーバーフローノズルとの間に、
開口部を設けダスト吸引ノズルを貫通し、該ノズル下端
を該トラフの取水水位以下で、かつ該トラフの底部近傍
まで挿入した前項記載の冷却水配管詰り防止装置であ
り、かつ給水ノズルに代えて、リング状仕切板の外周
部に炉心に向かう開口部を設けた断面状の環状給水ヘ
ッダーを配設した前項記載の冷却水配管詰り防止装置
である。<Means for Solving the Problems> The present invention relates to a cooling device for a bellless charging device arranged in a rotating shell in a blast furnace top casing, and a rotating shell from an annular swirling trough provided above the rotating shell. An overflow nozzle is provided on the upper part of the water distribution pipe for taking water into the water cooling panel provided around the, and the intake water level from the annular turning trough is located above the bottom surface of the trough and is provided on the trough. A cooling water pipe clogging prevention device in which a ring-shaped partition plate that reaches a portion below the intake water level from the fixed casing is arranged on the core side of the water intake part, and a ring-shaped partition plate of the fixed casing above the annular swirling trough. Between the overflow nozzle,
The cooling water pipe clogging prevention device according to the preceding paragraph, wherein an opening is provided through the dust suction nozzle, and the lower end of the nozzle is inserted below the intake water level of the trough and near the bottom of the trough, and instead of the water supply nozzle. The cooling water pipe clogging prevention device according to the preceding paragraph, wherein an annular water supply header having a cross-section having an opening toward the core is provided on the outer periphery of the ring-shaped partition plate.
〈作用〉 本考案は、高炉炉頂部のケーシング内の回転シェルに配
設されたベルレス式装入装置の水冷装置において、前記
回転シェルの上部に設けられた環状旋回トラフ８から回
転シェル３の周囲に設けられた水冷パネル６への給水を
行う配水管16の前記環状旋回トラフ８からの取水水位
を、オーバーフローノズル19を設けることにより同トラ
フ底面より上部に維持することができ、同時に前記環状
旋回トラフの上方に位置する固定ケーシングより前記取
水水位より下部まで達するような長さのリング状仕切板
20を前記の配水管の取水部よりも内径側に設けたもので
ある。<Operation> The present invention relates to a water cooling device of a bellless charging device arranged in a rotating shell in a casing at the top of a blast furnace, in which an annular swirling trough 8 provided at an upper portion of the rotating shell to a periphery of the rotating shell 3 are provided. The water level of the water distribution pipe 16 for supplying water to the water-cooling panel 6 provided in the above-mentioned annular swirling trough 8 can be maintained above the bottom surface of the trough by providing the overflow nozzle 19, and at the same time, the above-mentioned annular swirling A ring-shaped partition plate with a length that reaches below the intake water level from a fixed casing located above the trough
20 is provided on the inner diameter side of the water intake portion of the water distribution pipe.
このような構造を採用することにより、前記のリング状
仕切板20よりも外径側の空間は炉内とは水封により縁切
りを行われることになり、炉頂圧変動が発生しガスの往
来があった場合でも必ず水で洗浄された清浄ガスが通過
するため、環状旋回トラフ８の外側壁あるいは環状旋回
トラフ８直上の固定ケーシングにダストが付着生成する
という現象は防止される。同仕切板より内径側において
は従来通りのダスト付着成長現象は発生するが、この部
分から落下した塊状ダストは環状旋回トラフの底部に沈
澱することとなり、水冷パネルへの供給水の取水水位は
これよりはるかに上部であるために水冷パネルの方へこ
の塊状ダストが流れ込むことは完全に防止される。By adopting such a structure, the space on the outer diameter side of the ring-shaped partition plate 20 is cut off from the inside of the furnace by water-sealing, which causes fluctuations in the top pressure of the furnace and gas flow. Even if there is, the clean gas washed with water always passes, so that the phenomenon that dust adheres to the outer wall of the annular turning trough 8 or the fixed casing immediately above the annular turning trough 8 is prevented. The conventional dust adhesion growth phenomenon occurs on the inner diameter side of the partition plate, but the massive dust that has fallen from this part will settle at the bottom of the annular swirling trough, and the water intake level of the water supply to the water cooling panel will be The much higher top completely prevents this lump of dust from flowing into the water cooled panel.
長期にわたる操業時には環状旋回トラフの底部に塊状ダ
ストが堆積するが、環状旋回トラフの直上の固定ケーシ
ングの一部から、ダスト吸引ノズル21を旋回トラフ底面
近傍まで挿入し、適宜堆積した塊状ダストを外部へ吸引
除去することにより更に長期間メンテナンスフリーで高
炉操業を継続することができる。Agglomerated dust accumulates on the bottom of the annular swirling trough during long-term operation, but the dust suction nozzle 21 is inserted up to near the bottom of the swirling trough from a part of the fixed casing immediately above the annular swirling trough, and the agglomerated dust that has accumulated appropriately is externally By sucking and removing the blast furnace, the operation of the blast furnace can be continued without maintenance for a long time.
給水ノズル７の代わりに、リング状仕切板20の上部外周
部に、炉心へ向けた開口部24−１を設けた環状の給水ヘ
ッダー24を設け、環状旋回トラフ８への給水を開口部か
ら、該トラフの内径側の側壁に衝突させ、ダストの付
着、塊状化を抑制できる。Instead of the water supply nozzle 7, an annular water supply header 24 having an opening 24-1 facing the reactor core is provided on the upper outer periphery of the ring-shaped partition plate 20, and water is supplied to the annular swirling trough 8 from the opening. It is possible to suppress dust adhesion and agglomeration by colliding with the inner diameter side wall of the trough.
〈実施例〉 本考案の実施例を第１図に基づいて説明する。<Embodiment> An embodiment of the present invention will be described with reference to FIG.
環状旋回トラフ８の底面に、水冷パネル６ａ，６ｂへ給
水するためのオーバーフローノズル19が装着されてい
る。そして、このオーバーフローノズルよりも内径側に
オーバーフローノズル上端の取水水位もよりも10〜20mm
程度下にまで来るような上部リング状仕切板20を配設す
る。このような構造にすることにより、上部固定ケーシ
ングに設けられた給水ノズル７から供給された冷却水
は、環状旋回トラフ８を通過しても塊状ダストを含まな
い清浄な上澄み水だけが水冷パネル６ａ，６ｂに供給さ
れることになり、水冷蛇管17や配水管16の閉塞トラブル
を起こすことが無い。An overflow nozzle 19 for supplying water to the water cooling panels 6a and 6b is mounted on the bottom surface of the annular turning trough 8. And, the water intake level at the upper end of the overflow nozzle is 10 to 20 mm closer to the inner diameter than the overflow nozzle.
An upper ring-shaped partition plate 20 is arranged so that it comes down to a certain extent. With such a structure, the cooling water supplied from the water supply nozzle 7 provided in the upper fixed casing is the water-cooled panel 6a in which only the clear supernatant water containing no lump dust is passed even though it passes through the annular swirling trough 8. , 6b, so that the trouble of blocking the water-cooled corrugated pipe 17 and the water distribution pipe 16 does not occur.
更に、環状旋回トラフ８の固定ケーシング２の上部から
ダスト吸引ノズル21を前記環状旋回トラフ８の底面近く
まで挿入し、底面に溜まった塊状ダストを外部へ吸引・
排出する例を第２図に示した。Further, a dust suction nozzle 21 is inserted from the upper portion of the fixed casing 2 of the annular swirling trough 8 to near the bottom surface of the annular swiveling trough 8 to suck the massive dust accumulated on the bottom surface to the outside.
An example of discharging is shown in FIG.
塊状旋回トラフ８への給水を給水ヘッダー24の開口部24
−１から環状旋回トラフの内径側の側壁に衝突させ、ダ
ストの塊状化までも抑制した例を第３図に示した。環状
旋回トラフ８に付着したダスト22は成長する前に給水に
より洗い流されてしまい、水冷蛇管17や配水管16の閉塞
を起こさないような微粒子のダストは上澄み液と共に冷
却水として使用された後炉外へ排出されてしまうため、
環状旋回トラフ８の底面に沈澱−堆積するダストの量は
第１図の場合よりは減少させることができる。洗浄兼用
の給水はリング状仕切板20を流用した給水ヘッダー24の
側壁に微小円形もしくはスリット状の開口部24−１を円
周に沿って設け、水を環状旋回トラフ８の内径側の側壁
に向かって噴出させる。Water is supplied to the block swirling trough 8 through the opening 24 of the water supply header 24.
FIG. 3 shows an example in which even the agglomeration of dust is suppressed by colliding with the side wall on the inner diameter side of the annular swirling trough from -1. The dust 22 adhering to the annular swirling trough 8 is washed away by the water supply before it grows, and the fine dust particles that do not cause clogging of the water-cooled serpentine pipe 17 and the distribution pipe 16 are used as cooling water together with the supernatant liquid. Because it will be discharged outside,
The amount of dust settling and accumulating on the bottom surface of the annular swirling trough 8 can be reduced as compared with the case of FIG. For water supply that also serves as cleaning, a minute circular or slit-shaped opening 24-1 is provided along the circumference on the side wall of the water supply header 24 that uses the ring-shaped partition plate 20, and water is supplied to the inner side wall of the annular swirling trough 8. Eject toward you.
〈考案の効果〉 以上説明したように、この考案は以下の優れた効果を奏
する。<Effect of Device> As described above, this device has the following excellent effects.
ベルレス装入装置内に設けられた水冷装置の詰り問題が
解消し信頼性が確保されたため、大型高圧高炉において
も高価な冷却ガスを用いることなくベルレス装入装置を
使用することが可能となった。このために、ガス冷却設
備の設備投資が不必要になるだけでなく、ガス冷却設備
の維持費や冷却ガス昇圧のためのエネルギー費用を皆無
とすることができた。Since the clogging problem of the water cooling device inside the bellless charging device was solved and the reliability was secured, it became possible to use the bellless charging device even in large high pressure blast furnaces without using expensive cooling gas. . For this reason, not only the capital investment of the gas cooling equipment becomes unnecessary, but also the maintenance cost of the gas cooling equipment and the energy cost for boosting the cooling gas can be eliminated.
第１図，第２図，第３図は、本考案に係る冷却水配管詰
り防止装置を示すもので、第１図(a)は第１実施例の断
面図、第１図(b)は第１図(a)のA1部拡大図、第２図(a)
は第２実施例の断面図、第２図(b)は第２図(a)のA2部拡
大図、第３図(a)は第３実施例の断面図、第３図(b)は第
３図(a)のA3部拡大図、第４図は、従来の冷却装置の一
例を示す断面図である。 １…マンテル、２…ケーシング、 ３…回転シェル、４…旋回輪軸受、 ５…動力伝達系、６ａ…水冷パネル、 ６ｂ…水冷パネル、７…給水ノズル、 ８…環状旋回トラフ、９…環状固定トラフ、 10…排水管、11…ラビリンスプレート、 12…下部ラビリンス、13…下部リング状仕切板、 14…上部ラビリンス、 15…分配シュート傾動用減速機、 16…配水管、17…水冷蛇管、 18…分配シュート、 19…オーバーフローノズル、 20…リング状仕切板、21…ダスト吸引ノズル、 22…付着ダスト、23…堆積ダスト、 24…給水ヘッダー、 24−１…給水ヘッダー開口部。1, 2, and 3 show a cooling water pipe clogging prevention device according to the present invention. FIG. 1 (a) is a sectional view of the first embodiment, and FIG. 1 (b) is a 1 part enlarged view of FIG. 1 (a), FIG. 2 (a)
Is a sectional view of the second embodiment, FIG. 2 (b) is an enlarged view of an A 2 portion of FIG. 2 (a), FIG. 3 (a) is a sectional view of the third embodiment, and FIG. 3 (b). Is an enlarged view of part A 3 of FIG. 3 (a), and FIG. 4 is a sectional view showing an example of a conventional cooling device. DESCRIPTION OF SYMBOLS 1 ... Mantel, 2 ... Casing, 3 ... Rotating shell, 4 ... Slewing ring bearing, 5 ... Power transmission system, 6a ... Water cooling panel, 6b ... Water cooling panel, 7 ... Water supply nozzle, 8 ... Annular orbiting trough, 9 ... Annular fixing Trough, 10 ... Drain pipe, 11 ... Labyrinth plate, 12 ... Lower labyrinth, 13 ... Lower ring partition plate, 14 ... Upper labyrinth, 15 ... Distribution chute tilt reducer, 16 ... Distribution pipe, 17 ... Water-cooled spiral pipe, 18 ... Distribution chute, 19 ... Overflow nozzle, 20 ... Ring-shaped partition plate, 21 ... Dust suction nozzle, 22 ... Adhering dust, 23 ... Deposited dust, 24 ... Water supply header, 24-1 ... Water supply header opening.
Claims (3)
置されたベルレス式装入装置の冷却装置において、前記
回転シェルの上部に設けられた環状旋回トラフから回転
シェルの周囲に設けられた水冷パネルに取水する配水管
の上部にオーバーフローノズルを配設し、前記環状旋回
トラフからの取水水位を該トラフ底面より上部に位置さ
せると共に該トラフの上に設けられた固定ケーシングか
ら前記取水水位より下部まで達するようなリング状仕切
板を取水部よりも炉心側に配設した冷却水配管詰り防止
装置。1. A cooling device for a bellless charging device installed in a rotating shell inside a blast furnace top casing, wherein a water cooling panel is provided around an annular swirling trough provided at an upper portion of the rotating shell. An overflow nozzle is provided above the water distribution pipe for water intake, and the intake water level from the annular swirling trough is located above the bottom surface of the trough and from a fixed casing provided on the trough to below the intake water level. A cooling water pipe blockage prevention device in which a ring-shaped partition plate that reaches is installed on the core side of the water part.
リング状仕切板とオーバーフローノズルとの間に、開口
部を設けダスト吸引ノズルを貫通し、該ノズル下端を該
トラフの取水水位以下で、かつ該トラフの底部近傍まで
挿入した請求項１記載の冷却水配管詰り防止装置。2. A fixed casing on the upper part of an annular turning trough,
The cooling according to claim 1, wherein an opening is provided between the ring-shaped partition plate and the overflow nozzle to penetrate the dust suction nozzle, and the lower end of the nozzle is inserted below the intake water level of the trough and to near the bottom of the trough. Water pipe clogging prevention device.
周部に炉心に向かう開口部を設けた断面状の環状給水
ヘッダーを配設した請求項１記載の冷却水配管詰り防止
装置。3. The clogging prevention device for cooling water pipes according to claim 1, wherein instead of the water supply nozzle, an annular water supply header having a cross section having an opening toward the core is provided on the outer peripheral portion of the ring-shaped partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6117688U JPH068988Y2 (en) | 1988-05-11 | 1988-05-11 | Bellless charging device cooling water pipe clogging prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6117688U JPH068988Y2 (en) | 1988-05-11 | 1988-05-11 | Bellless charging device cooling water pipe clogging prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01164748U JPH01164748U (en) | 1989-11-17 |
| JPH068988Y2 true JPH068988Y2 (en) | 1994-03-09 |
Family
ID=31286851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6117688U Expired - Lifetime JPH068988Y2 (en) | 1988-05-11 | 1988-05-11 | Bellless charging device cooling water pipe clogging prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068988Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482661A (en) * | 2018-11-29 | 2019-03-19 | 太原科技大学 | Lower collector pipe angle regulator in a kind of section cooling equipment |
-
1988
- 1988-05-11 JP JP6117688U patent/JPH068988Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01164748U (en) | 1989-11-17 |
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