JPH0212236Y2 - - Google Patents
Info
- Publication number
- JPH0212236Y2 JPH0212236Y2 JP1984174358U JP17435884U JPH0212236Y2 JP H0212236 Y2 JPH0212236 Y2 JP H0212236Y2 JP 1984174358 U JP1984174358 U JP 1984174358U JP 17435884 U JP17435884 U JP 17435884U JP H0212236 Y2 JPH0212236 Y2 JP H0212236Y2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- floating roof
- cylindrical body
- roof
- manhole
- 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
Links
- 238000007667 floating Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、浮屋根式タンク内に設けられた装置
の着脱に際して、作業員が該装置に接近し作業を
行うためのアクセスマンホールに関するものであ
る。[Detailed Description of the Invention] Industrial Application Field The present invention relates to an access manhole through which a worker can access and work on equipment installed in a floating roof tank when installing or removing equipment.
従来の技術
ガスを発生する液体を貯蔵する浮屋根式タンク
内の装置と保守点検或いは故障による交換のため
着脱する必要のあるタンク内の被着脱装置は可能
なかぎり側ノズルに取付ける工夫がなされてい
る。しかし、側ノズル以外に装着しなければなら
ない装置もあり該装置の着脱にあつてはタンク内
の液体を全部排出し、タンクのクリーニングを行
い、ガスを皆無の状態にした後に、作業員がタン
ク内に入いり、作業を行つていた。PRIOR TECHNOLOGY Devices in floating roof tanks that store gas-generating liquids and devices that need to be attached and detached in tanks for maintenance, inspection, or replacement due to failure have been designed to be attached to side nozzles as much as possible. There is. However, there are devices that must be installed in places other than the side nozzle, and when installing or removing such devices, workers must drain all the liquid in the tank, clean the tank, and make sure there is no gas left in the tank. He went inside and worked.
考案が解決しようとする問題点
ところで、液体を全部排出しタンクのクリーニ
ングを行うには長時間と多額の費用を要し、不経
済であるという問題があつた。一方、タンク内に
ガス又は液体が存在している状態で作業を行う場
合は、次の方法が考えられる。被着脱装置がスラ
ツジ拡散装置ノズルである場合を例にとると、第
２図に示すように浮屋根１を貫通する筒状のルー
フマンホール２を浮屋根１に固着し、通常は、そ
の上面を盲フランジ３で閉じておき、作業を行う
ときにタンク内の液面を該ノズル４より低い位置
まで下げ、盲フランジ３を取外し浮屋根１の上か
ら作業員が柄の長い特殊ボツクススパナを使つて
フランジ５のボルトを取外すことにより該ノズル
４を取外し、フランジ５に固着したアイボルト６
にワイヤ等を引掛けて浮屋根上に引上げ取出す方
法である。しかし、この方法では、浮屋根の上か
ら該ノズルをタンク内の元の位置へ組込むのは極
めて困難であるという問題がある。Problems that the invention aims to solve By the way, there was a problem that draining all the liquid and cleaning the tank required a long time and a large amount of money, making it uneconomical. On the other hand, when working with gas or liquid present in the tank, the following methods can be considered. For example, when the device to be attached and detached is a sludge spreading device nozzle, a cylindrical roof manhole 2 that penetrates the floating roof 1 is fixed to the floating roof 1 as shown in FIG. It is closed with a blind flange 3, and when working, lower the liquid level in the tank to a level lower than the nozzle 4, remove the blind flange 3, and use a special long-handled box spanner from above the floating roof 1. The nozzle 4 is removed by removing the bolts of the flange 5, and the eye bolts 6 fixed to the flange 5 are removed.
This method involves hooking a wire, etc. to the roof and lifting it onto the floating roof. However, this method has the problem that it is extremely difficult to install the nozzle from above the floating roof to its original position in the tank.
本考案は上述した問題点を解決し、タンク内に
ガスが存在する状態で作業員が被着脱装置に近付
き、容易に着脱作業を遂行できるようにした浮屋
根式タンクのアクセスマンホールを提供すること
を目的とするものである。 The present invention solves the above-mentioned problems and provides an access manhole for a floating roof tank that allows a worker to approach the equipment to be attached and detached and easily carry out attachment/detachment work while gas is present in the tank. The purpose is to
問題点を解決するための手段
本考案は、内部に被着脱装置を有する浮屋根式
タンクにおいて、該浮屋根を貫通して設けた筒状
のルーフマンホールに抜き挿し自在な筒体を挿入
し、該筒体内に前記被着脱装置を収納するととも
に、該筒体内を大気に対しては開放し、該筒体の
下端を前記被着脱装置の周囲であつて該被着脱装
置より低い位置に設けられたシールパンのシール
液中に浸してタンク内部に対しては気密にシール
したことを特徴とする浮屋根式タンクのアクセス
マンホールである。Means for Solving the Problems The present invention provides a floating roof type tank having a removable device inside, in which a removable cylindrical body is inserted into a cylindrical roof manhole provided through the floating roof. The detachable device is housed in the cylindrical body, the inside of the cylindrical body is opened to the atmosphere, and the lower end of the cylindrical body is provided around the detachable device at a position lower than the detachable device. This is an access manhole for a floating roof type tank, characterized in that it is immersed in the sealing liquid of a seal pan and is airtightly sealed from the inside of the tank.
実施例
次に本考案の一実施態様を被着脱装置がスラツ
ジ拡散装置ノズルの場合を例示して、第１図に基
いて述べる。Embodiment Next, one embodiment of the present invention will be described based on FIG. 1, illustrating the case where the device to be attached and detached is a sludge spreading device nozzle.
タンクの底板７上の配管８にフランジを介して
取付けられたフラツジ拡散装置ノズル４に対応し
て浮屋根１を貫通した筒状のルーフマンホール２
を該浮屋根１に固着する。該ルーフマンホール２
に抜き挿し自在な筒体９を挿入し、該筒体９内に
前記ノズル４を収納する。該筒体９の下端は、タ
ンク内の液面１０の上方でかつノズル４より下方
にあるシールパン１１に注入された水等のシール
液１３に浸されている。これにより筒体９の中は
タンクの内部に対しては気密にシールされてい
る。シールパン１１の内周縁はノズル４の取付用
管継手１２の外周に全周流体密に溶接されてい
る。シールパン１１の外周縁は堰板１５で取囲ま
れシール液１３を溜めておくことができる。筒体
９の外周とルーフマンホール２の内周との間には
その上部にウレタンフオーム等からなるソフトシ
ール１４を設けて大気とタンク内部との間を気密
に遮断している。筒体９の上端は大気に対して開
放されていて、筒体９の中にその上方から作業員
が入いり、ノズル４を着脱する作業が容易かつ安
全に行なえる。作業終了後は筒体９の上方から作
業員が浮屋根１の上に出て筒体９を上方から抜取
り、盲フランジをルーフマンホール２の上端に取
付ける。 A cylindrical roof manhole 2 that penetrates the floating roof 1 in correspondence with a flat diffuser nozzle 4 that is attached to a pipe 8 on the bottom plate 7 of the tank via a flange.
is fixed to the floating roof 1. Roof manhole 2
A removable cylindrical body 9 is inserted into the cylindrical body 9, and the nozzle 4 is housed in the cylindrical body 9. The lower end of the cylindrical body 9 is immersed in a sealing liquid 13, such as water, poured into a sealing pan 11 located above the liquid level 10 in the tank and below the nozzle 4. As a result, the inside of the cylinder 9 is airtightly sealed from the inside of the tank. The inner periphery of the seal pan 11 is welded to the outer periphery of a fitting 12 for mounting the nozzle 4 in a fluid-tight manner. The outer periphery of the seal pan 11 is surrounded by a weir plate 15 so that the seal liquid 13 can be stored therein. A soft seal 14 made of urethane foam or the like is provided at the upper part between the outer periphery of the cylindrical body 9 and the inner periphery of the roof manhole 2 to airtightly isolate between the atmosphere and the inside of the tank. The upper end of the cylindrical body 9 is open to the atmosphere, and a worker can enter the cylindrical body 9 from above to attach and detach the nozzle 4 easily and safely. After the work is completed, a worker steps onto the floating roof 1 from above the cylindrical body 9, pulls out the cylindrical body 9 from above, and attaches a blind flange to the upper end of the roof manhole 2.
効 果
本考案によれば、浮屋根を貫通して設けた筒状
のルーフマンホールに抜き挿し自在な筒体を挿入
するので構造が簡単であり、該筒体内に被着脱装
置を収納するとともに筒体内を大気に対しては開
放しタンク内部に対しては気密にシールするの
で、タンク内にガス又は液体が存在している状態
において筒体内に作業員が入つて容易かつ安全に
作業遂行ができ、したがつてタンク内の液排出や
タンクのクリーニングも不要で非常に能率的で経
済的なアクセスマンホールを提供できる。さら
に、被着脱装置の周囲にあつて該装置より低い位
置に設けられたシールパンのシール液中に筒体の
下端を浸して気密にシールしているので筒体を上
方から落し込むだけで筒体下端のシールが完全で
あり作業終了後は筒体を上方へ引抜けばよいので
非常に便利である。Effects According to the present invention, the structure is simple because a removable cylindrical body is inserted into a cylindrical roof manhole provided through the floating roof. Since the inside of the body is open to the atmosphere and airtightly sealed to the inside of the tank, a worker can enter the cylinder and perform work easily and safely when gas or liquid is present in the tank. Therefore, there is no need to drain the liquid inside the tank or clean the tank, making it possible to provide an extremely efficient and economical access manhole. Furthermore, since the lower end of the cylinder is immersed in the sealing liquid of the seal pan installed at a lower position than the device to be attached and removed, the lower end of the cylinder is airtightly sealed. It is very convenient because the lower end of the body is completely sealed and the cylindrical body can be pulled upwards after the work is completed.
なお、本考案は、被着脱装置の種類について限
定されることなく広く適用可能である。 Note that the present invention can be widely applied without being limited to the type of attachment/detachment device.
第１図は本考案の実施例説明用であつて、浮屋
根部分は縦断面を示し被着脱装置部分は側面図を
示す。第２図は、考えることができるあまり好ま
しくない場合の説明用であつて、浮屋根部分は縦
断面を示し被着脱装置部分は側面図である。
１……浮屋根、２……ルーフマンホール、３…
…盲フランジ、４……ノズル、５……フランジ、
６……アイボルト、７……底板、８……配管、９
……筒体、１０……液面、１１……シールパン、
１２……管継手、１３……シール液、１４……ソ
フトシール、１５……堰板。
FIG. 1 is for explaining an embodiment of the present invention, in which the floating roof portion is shown in a longitudinal section and the attachment/detachment device portion is shown in a side view. FIG. 2 is for illustrating a conceivable less preferable case, in which the floating roof portion is shown in longitudinal section and the detachable device portion is shown in side view. 1...Floating roof, 2...Roof manhole, 3...
...Blind flange, 4...Nozzle, 5...Flange,
6... Eye bolt, 7... Bottom plate, 8... Piping, 9
... cylinder body, 10 ... liquid level, 11 ... seal pan,
12...Pipe fitting, 13...Seal liquid, 14...Soft seal, 15...Weir plate.
Claims (1)
いて、該浮屋根を貫通して設けた筒状のルーフマ
ンホールに抜き挿し自在な筒体を挿入し、該筒体
内に前記被着脱装置を収納するとともに、該筒体
内を大気に対しては開放し、該筒体の下端を前記
被着脱装置の周囲であつて該被着脱装置より低い
位置に設けられたシールパンのシール液中に浸し
て気密にシールしたことを特徴とする浮屋根式タ
ンクのアクセスマンホール。 In a floating roof type tank having a detachable device inside, a removable cylinder is inserted into a cylindrical roof manhole provided through the floating roof, and the detachable device is housed in the cylinder. The inside of the cylindrical body is opened to the atmosphere, and the lower end of the cylindrical body is immersed in a sealing liquid in a seal pan provided around the detachable device and at a lower position than the detachable device to make it airtight. An access manhole for a floating roof tank characterized by a sealed seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984174358U JPH0212236Y2 (en) | 1984-11-19 | 1984-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984174358U JPH0212236Y2 (en) | 1984-11-19 | 1984-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6191588U JPS6191588U (en) | 1986-06-13 |
| JPH0212236Y2 true JPH0212236Y2 (en) | 1990-04-05 |
Family
ID=30731980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984174358U Expired JPH0212236Y2 (en) | 1984-11-19 | 1984-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0212236Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58183478A (en) * | 1982-04-06 | 1983-10-26 | ト−ヨ−カネツ株式会社 | Device for replacing accessory of tank |
-
1984
- 1984-11-19 JP JP1984174358U patent/JPH0212236Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58183478A (en) * | 1982-04-06 | 1983-10-26 | ト−ヨ−カネツ株式会社 | Device for replacing accessory of tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6191588U (en) | 1986-06-13 |
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