JPS6235199A - Device for removing and collecting granular heat insulating material from double-shell low tmeperature tank - Google Patents
Device for removing and collecting granular heat insulating material from double-shell low tmeperature tankInfo
- Publication number
- JPS6235199A JPS6235199A JP17354085A JP17354085A JPS6235199A JP S6235199 A JPS6235199 A JP S6235199A JP 17354085 A JP17354085 A JP 17354085A JP 17354085 A JP17354085 A JP 17354085A JP S6235199 A JPS6235199 A JP S6235199A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- double
- branch pipe
- granular
- insulation material
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/001—Thermal insulation specially adapted for cryogenic vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
Abstract
Description
【発明の詳細な説明】
（１）産業上の利用分野
本発明はＬＮＧ等の低温液体の貯蔵等に使用される二重
殻タンクの屋根部、側部及び底部に充填される粒状断熱
材の除去回収装置に関する。DETAILED DESCRIPTION OF THE INVENTION (1) Industrial Application Field The present invention relates to a granular heat insulating material filled in the roof, sides and bottom of a double shell tank used for storing low temperature liquids such as LNG. This invention relates to a removal and recovery device.
（２）従来の技術
この種の二重殻タンク内の解体のために、該二重殻タン
クから粒状断熱材を除去回収することが今後必要になり
、その除去回収装置が従来存在しなかった。(2) Prior art In order to dismantle this kind of double-shelled tank, it will be necessary to remove and recover the granular insulation material from the double-shelled tank, and there was no existing removal and recovery equipment for this purpose. .
（３）発明が解決しようとする問題点
本発明は人力を必要とせずに粒状断熱材を除去回収でき
、しかも粉塵公害を生せず且つ処理粒状断熱材を減容化
する除去回収装置を提供することを目的とする。(3) Problems to be Solved by the Invention The present invention provides a removal and recovery device that can remove and recover granular insulation material without requiring human labor, does not cause dust pollution, and reduces the volume of treated granular insulation material. The purpose is to
（４）問題点を解決するための手段
この目的を達成すべく本発明はセパレータと、該セパレ
ータの流入口に接続し少なくとも先端部が二重殻低温タ
ンク内に導入される空気輸送管と、前記セパレータの空
気流出口に接続する吸引ブロワ−と、前記セパレータの
粒状断熱材の流出口に接続する該断熱材の減容機とから
なることを特徴とする。(4) Means for Solving the Problems In order to achieve this object, the present invention comprises a separator, an air transport pipe connected to the inlet of the separator and having at least its tip introduced into a double-shell cryogenic tank; It is characterized by comprising a suction blower connected to the air outlet of the separator, and a volume reduction machine for the heat insulating material connected to the outlet of the granular heat insulating material of the separator.
（５）作用
二重殻低温タンク内に導入した空気輸送管を通じて該タ
ンクの粒状断熱材が吸引輸送され、セパレータにおいて
空気から分離された前記粒状断熱材は減容機において圧
縮減容されてブロック化される。かくて粒状断熱材が前
記タンク外に飛散することがなくて粉塵公害が発生せず
、除去回収後の断熱材は減容ブロック化されて運搬が容
易となる。(5) Effect The granular insulation material in the double-shelled low-temperature tank is sucked and transported through the air transport pipe introduced into the tank, and the granular insulation material separated from the air in the separator is compressed and reduced in volume in a volume reduction machine to block it. be converted into In this way, the granular heat insulating material is not scattered outside the tank and no dust pollution is generated, and the heat insulating material after removal and recovery is made into a volume-reduced block, making it easy to transport.
（６）実施例 本発明の１実施例を図面に従って説明する。(6) Examples An embodiment of the present invention will be described with reference to the drawings.
（１）は金属製二重殻低温タンク、（２）は粒状断熱材
徐去回収装置を示し、該除去回収装置（２）は空気輸送
管（３）と、その根部に接続されるサイクロン式等のセ
パレータ（４）と、その空気流出口からの空気吸出管（
５）に接続される吸引ブロワ−（６〕と、前記セパレー
タ（４）の粒状断熱材の流出口からの第１断熱材排出管
（７）に接続されるホッパ一式の貯留槽（８）と、その
排出口からの第２断熱材排出管（９）に接続される減容
機（１０）とからなり、前記空気輸出管（３）は先端側
において分岐されていてその第１分岐管（３ａ）を通じ
て前記タンク（１）の屋根部の粒状断熱材を、又第２分
岐管（３ｂ）を通じて該タンク（１）の側部の粒状断熱
材を、又第３分岐管（３Ｃ）を通じて該タンク（１）の
底部の粒状断熱材をそれぞれ吸引するようになっている
。(1) is a metal double-shell low-temperature tank, (2) is a granular insulation material removal and recovery device, and the removal and recovery device (2) is a cyclone type connected to an air transport pipe (3) and its root. etc. separator (4) and air suction pipe from its air outlet (
a suction blower (6) connected to the separator (5); and a storage tank (8) of a hopper set connected to the first insulation material discharge pipe (7) from the outlet of the granular insulation material of the separator (4). , and a volume reducer (10) connected to a second insulating material discharge pipe (9) from its discharge port, and the air export pipe (3) is branched at the tip side, and the first branch pipe ( 3a), the granular insulation material on the roof of the tank (1) through the second branch pipe (3b), the granular insulation material on the side of the tank (1) through the second branch pipe (3b), and the granular insulation material on the side of the tank (1) through the third branch pipe (3C). Each of the granular insulation materials at the bottom of the tank (1) is sucked up.
即ち、前記第１分岐管（３ａ）を通じてタンク（１）の
屋根部の粒状断熱材を吸引する場合は、第２図示の如く
、タンク（１）の外槽屋根周縁部に開口部（１１）を設
け、前記第１分岐管（３ａ）の先端に、第１吸引ノズル
（１３ａ）を接続し、該第１吸引ノズル（１３ａ）を前
記開口部（１１）内に挿入して粒状断熱材を吸引する。That is, when sucking the granular heat insulating material on the roof of the tank (1) through the first branch pipe (3a), as shown in the second diagram, an opening (11) is formed at the peripheral edge of the outer tank roof of the tank (1). A first suction nozzle (13a) is connected to the tip of the first branch pipe (3a), and the first suction nozzle (13a) is inserted into the opening (11) to apply the granular heat insulating material. Suction.
尚第２図において（１４）は空気取入口を示す、尚、外
槽屋根開口部は既設マンホールを利用してもよい。In FIG. 2, (14) indicates an air intake port. Note that an existing manhole may be used as the opening of the outer tank roof.
又、第２分岐管（３ｂ）を通じてタンク（１）の側部の
粒状断熱材を吸引する場合は、内槽ガス置換及び保冷材
層ガス置換の後、前記タンク（１）のマンホール（１５
）の外蓋を外した後、該マンホール（１５）内のグラス
ウールを除去して該マンホール（１５）の内蓋を外し、
該マンホール（１５）を利用して前記タンク（１）内に
資材を投入すると共に作業員が入る。そして前記タンク
（１）の内槽側板の下部に第３図及び第４図示の如く必
要数開口部（１６）を設け、前記第２分岐管（３ｂ）を
前記マンホール（１５）内を挿通して該第２分岐管（３
ｂ）の先端に接続した第２吸引ノズル（１３ｂ）を前記
開口部（１６）に臨ませて、該開口部（１６）から内槽
内に流出した粒状断熱材を吸引する。尚このときタンク
（１）の側板をバイブレータにより振動させて強制流出
させてもよい。（１７）は前記開口部（１６）を開閉調
整すべく内槽の側板に取付けたゲート、（１８）はグラ
スウールを示す。In addition, when suctioning the granular heat insulating material on the side of the tank (1) through the second branch pipe (3b), after replacing the inner tank gas and the coolant layer gas, the manhole (15
), remove the glass wool inside the manhole (15), and remove the inner cover of the manhole (15);
Using the manhole (15), materials are put into the tank (1) and workers enter. Then, a required number of openings (16) are provided in the lower part of the inner tank side plate of the tank (1) as shown in FIGS. 3 and 4, and the second branch pipe (3b) is inserted into the manhole (15). and the second branch pipe (3
A second suction nozzle (13b) connected to the tip of b) is placed facing the opening (16) to suck the granular heat insulating material flowing into the inner tank from the opening (16). At this time, the side plate of the tank (1) may be vibrated with a vibrator to force the water to flow out. (17) indicates a gate attached to the side plate of the inner tank to adjust the opening and closing of the opening (16), and (18) indicates glass wool.
又、前記第３分岐管（３Ｃ）を通じてタンク（１）の底
部の断熱材を吸引する場合は、第５図示の如くタンク（
１）の内槽の底板（１ａ）を順次溶断して該底板（１ａ
）と共にその下の木材（１ｂ）を撤去し、前記マンホー
ル（１５）内を挿通した前記第３分岐管（３Ｃ）の先端
に接続した第３吸引ノズル（１３ｃ）より円筒ブロー２
り（１９）内外の粒状断熱材を吸引する。In addition, when suctioning the heat insulating material at the bottom of the tank (1) through the third branch pipe (3C), the tank (
1) The bottom plate (1a) of the inner tank is sequentially melted to remove the bottom plate (1a).
) and the wood (1b) below it, and a cylindrical blow 2 is applied from the third suction nozzle (13c) connected to the tip of the third branch pipe (3C) inserted through the manhole (15).
(19) Suction the granular insulation material inside and outside.
尚、これらタンク（１）の各部からの吸引においては、
粒状断熱材をタンク（１）内で吸引処理しているので、
タンク（１）外に飛散することがなく粉塵公害とならな
い。In addition, when suctioning from each part of these tanks (1),
Since the granular insulation material is suctioned inside the tank (1),
It does not scatter outside the tank (1) and does not cause dust pollution.
前記減容！ｊａ（１０）はハウジング（１０ａ）とその
内部下方に設けた下側のシリンダー半部（１０ｂ）と該
シリンダー半部（ｉ ｏ ｂ）の上面に摺動自在に設け
た上側のシリンダー半部（ｌｏｃ）とこれらシリンダー
半部（１０ｂ）（ｌｏｃ）内に形成されるシリンダー室
内を摺動する押圧板（１０ｄ）と、前記上側のシリンダ
ー半部（１０ｃ）の往復摺動を行なわせる第１駆動シリ
ンダー（１０ｅ）と、前記抑圧板（１０ｄ）の往復摺動
を行なわせる第２駆動シリンダー（１０ｆ）と、前記シ
リンダー室の先端位置の前記ハウジング（１０ａ）の側
壁に形成した排出開口（１０ｇ）と、該排出開口（１０
ｇ）を開閉するゲート（１０ｈ）とその上下動を行なわ
せる第３駆動シリンダー（１０ｉ）とからなり、上側シ
リンダー半部（１０ｃ）を予め後退させた状態にし、流
入開口（１０ｊ）からハウジング（１０ａ）内に流入し
た粒状断熱材の下方部を前記上側シリンダー半部（１０
Ｃ）を進出させてシリンダー室内に収容し、押圧板（１
０ｃｉ）を進出させてこの収容した粒状断熱材を圧縮減
容してブロック化し、ゲート（ｉｏｈ）を開いて該ブロ
ック化した断熱材を排出開口（１０ｇ）より外部に排出
するようになっている。尚、（１２）はサイレンサー、
（２０ａ）（２０ｂ）はフィーダを示す。Said volume reduction! ja (10) consists of a housing (10a), a lower cylinder half (10b) provided inside the housing, and an upper cylinder half (10b) slidably provided on the upper surface of the cylinder half (i o b). loc), a press plate (10d) that slides within the cylinder chamber formed in the cylinder half (10b) (loc), and a first drive that causes the upper cylinder half (10c) to reciprocate and slide. A cylinder (10e), a second drive cylinder (10f) that allows the suppression plate (10d) to slide back and forth, and a discharge opening (10g) formed in the side wall of the housing (10a) at the tip of the cylinder chamber. and the discharge opening (10
g) Consists of a gate (10h) that opens and closes and a third drive cylinder (10i) that moves the gate up and down. The lower part of the granular insulation material that has flowed into the upper cylinder half (10a)
C) is advanced and housed in the cylinder chamber, and the press plate (1
0ci) is advanced to compress and reduce the volume of the accommodated granular insulation material into blocks, and the gate (ioh) is opened to discharge the blocked insulation material to the outside through a discharge opening (10g). . In addition, (12) is a silencer,
(20a) and (20b) indicate feeders.
次に上記実施例装置の作動を説明する。Next, the operation of the above embodiment device will be explained.
吸引ブロワ−（６）の駆動により二重殻低温タンク（１
）の屋根部、側部及び底部から粒状断熱材１例えばパー
ライトが第１分岐管（３ａ）、第２分岐管（３ｂ）及び
第３分岐管（３Ｃ）をそれぞれ介して空気輸送管（３）
内を吸引輸送され、セパレータ（４）においてパーライ
トが分離されて貯留槽（８）に一旦貯留され、その後パ
ーライトは減容機（１０）において圧縮減容されてブロ
ックとして外部に排出される。The double shell cryogenic tank (1) is driven by the suction blower (6).
) from the roof, sides and bottom of the air transport pipe (3) through the first branch pipe (3a), second branch pipe (3b) and third branch pipe (3C), respectively.
The perlite is transported by suction through the separator (4) and is temporarily stored in the storage tank (8).Then, the perlite is compressed and reduced in volume in the volume reduction machine (10) and discharged to the outside as a block.
（７）発明の効果
このように本発明によると、二重殻低温タンク内に導入
した空気輸送管を通じて該タンクの粒状断熱材が吸引輸
送され、セパレータにおいて空気から分離された前記粒
状断熱材は減容機において圧縮減容されてブロック化さ
れるので、粒状断熱材が前記タンク外に飛散することが
なくて粉塵公害がなくなり、除去回収後の断熱材はブロ
ックされて運搬が容易となり、更に人力を必要とせず、
自動的に処理されて作業性が極めて向上し、経費のｍ減
が図れる等の効果を有する。(7) Effects of the Invention According to the present invention, the granular heat insulating material in the double-shelled low-temperature tank is sucked and transported through the air transport pipe introduced into the tank, and the granular heat insulating material is separated from the air in the separator. Since the volume is compressed and made into blocks in the volume reduction machine, the granular insulation material does not scatter outside the tank, eliminating dust pollution, and the insulation material after removal and recovery is blocked, making it easier to transport. Does not require human power,
It is automatically processed, which greatly improves work efficiency and reduces costs.
第１図は本発明装置の系統図、第２図はタンクの屋根部
の粒状断熱材の吸引状態を示す概略断面図、第３図はタ
ンクの側部の粒状断熱材の吸引状態を示す概略断面図、
第４図はその要部の拡大断面図、第５図はタンクの底部
の粒状断熱材の吸引状態を示す断面図、第６図は減容機
の１部を截除した正面図、第７図はその■−■線截線面
断面図る。
（１）・・・二重殻低温タンク
（２）・・・断熱材除去回収装置
（３）・・・空気輸送管 （３ａ）・・・第１分岐管
（３ｂ）・・・第２分岐管 （３Ｃ）・・・第３分岐管
（４）・・・セパレータ （６）・・・吸引ブロワ−
（１０）・・・減容機
（１０ａ）・・・ハウジング
（ｉｏｂ）・・・下側シリンダー半部
（１０ｃ）・・・上側シリンダー半部
（ｌｏｄ）・・・押圧板
（１０ｅ）・・・第１駆動シリンダー
（１０ｆ）・・・第２駆動シリンダー
（Ｌｏｇ）・・・排出開口 （１０ｈ）・・・ゲート（
１１）・・・開口部Fig. 1 is a system diagram of the device of the present invention, Fig. 2 is a schematic sectional view showing the suction state of the granular insulation material on the roof of the tank, and Fig. 3 is a schematic diagram showing the suction state of the granular insulation material on the side of the tank. cross section,
Fig. 4 is an enlarged cross-sectional view of the main part, Fig. 5 is a cross-sectional view showing the suction state of the granular insulation material at the bottom of the tank, Fig. 6 is a front view with a part of the volume reduction machine removed, and Fig. 7 The figure is a cross-sectional view taken along the line ■-■. (1)...Double shell low temperature tank (2)...Insulation material removal and recovery device (3)...Air transport pipe (3a)...First branch pipe (3b)...Second branch Pipe (3C)...Third branch pipe (4)...Separator (6)...Suction blower
(10)...Volume reduction machine (10a)...Housing (iob)...Lower cylinder half (10c)...Upper cylinder half (LOD)...Press plate (10e)...・First drive cylinder (10f)...Second drive cylinder (Log)...Discharge opening (10h)...Gate (
11)...opening
Claims (6)
なくとも先端部が二重殻低温タンク内に導入される空気
輸送管と、前記セパレータの空気流出口に接続する吸引
ブロワーと、前記セパレータの粒状断熱材の流出口に接
続する該断熱材の減容機とからなることを特徴とする二
重殻低温タンクの粒状断熱材除去回収装置。(1) A separator, an air transport pipe connected to the inlet of the separator and having at least its tip introduced into the double-shell cryogenic tank, a suction blower connected to the air outlet of the separator, and a granular shape of the separator. A granular insulation material removal and recovery device for a double-shell low-temperature tank, characterized by comprising a volume reduction machine for the insulation material connected to an outlet of the insulation material.
第２分岐管と第３分岐管に形成したことを特徴とする特
許請求の範囲第１項記載の二重殻低温タンクの粒状断熱
材徐去回収装置。(2) The double-shell cryogenic tank according to claim 1, characterized in that the tip side of the air transport pipe is branched to form a first branch pipe, a second branch pipe, and a third branch pipe. Granular insulation material removal and recovery equipment.
、該第１吸引ノズルを、前記二重殻低温タンクの外槽屋
根部に設けた開口部内に挿入したことを特徴とする特許
請求の範囲第２項記載の二重殻低温タンクの粒状断熱材
除去回収装置。(3) A first suction nozzle is connected to the tip of the first branch pipe, and the first suction nozzle is inserted into an opening provided in the outer tank roof of the double-shell cryogenic tank. A granular insulation material removal and recovery device for a double shell cryogenic tank according to claim 2.
、該第２分岐管を前記二重殻低温タンクのマンホールに
挿通し、前記第２吸引ノズルを該タンクの内槽側板の下
部に設けた開口部に臨ませたことを特徴とする特許請求
の範囲第２項記載の二重殻低温タンクの粒状断熱材除去
回収装置。(4) Connect a second suction nozzle to the tip of the second branch pipe, insert the second branch pipe into the manhole of the double-shell cryogenic tank, and connect the second suction nozzle to the inner tank side plate of the tank. The granular insulation material removal and recovery device for a double-shell cryogenic tank according to claim 2, characterized in that the device faces an opening provided at the lower part.
、該第３分岐管を前記二重殻低温タンクのマンホールに
挿通し、前記第３吸引ノズルを、該タンクの内槽の底板
とその下の木材を切断撤去したその下方に臨ませたこと
を特徴とする特許請求の範囲第２項記載の二重殻低温タ
ンクの粒状断熱材除去回収装置。(5) Connect a third suction nozzle to the tip of the third branch pipe, insert the third branch pipe into the manhole of the double-shell cryogenic tank, and connect the third suction nozzle to the inner tank of the tank. The apparatus for removing and recovering granular insulation material from a double-shell cryogenic tank according to claim 2, characterized in that the bottom plate and the wood thereunder are cut and removed, and the bottom plate is exposed below.
と、その内部下方に設けた下側シリンダー半部と、該下
側シリンダー半部の上面に摺動自在に設けた上側シリン
ダー半部と、これらシリンダー半部内に形成されるシリ
ンダー室内に摺動する押圧板と、前記上側シリンダー半
部の往復摺動を行なわせる第１駆動シリンダーと、前記
押圧板の往復摺動を行なわせる第２駆動シリンダーと、
前記シリンダー室の先端位置の前記ハウジングの側壁に
形成した排出開口と、該排出開口を開閉するゲートから
なることを特徴とする特許請求の範囲第１項記載の二重
殻低温タンクの粒状断熱材除去回収装置。(6) The volume reducing machine includes a housing in which the granular heat insulating material is housed, a lower cylinder half provided below the inside of the housing, and an upper cylinder half provided slidably on the upper surface of the lower cylinder half. a press plate that slides into a cylinder chamber formed in these cylinder halves; a first drive cylinder that causes the upper cylinder half to slide back and forth; and a second drive cylinder that causes the press plate to slide back and forth. a drive cylinder;
The granular heat insulating material for a double-shell low-temperature tank according to claim 1, comprising a discharge opening formed in the side wall of the housing at the tip of the cylinder chamber, and a gate for opening and closing the discharge opening. Removal and recovery equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17354085A JPS6235199A (en) | 1985-08-07 | 1985-08-07 | Device for removing and collecting granular heat insulating material from double-shell low tmeperature tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17354085A JPS6235199A (en) | 1985-08-07 | 1985-08-07 | Device for removing and collecting granular heat insulating material from double-shell low tmeperature tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6235199A true JPS6235199A (en) | 1987-02-16 |
Family
ID=15962424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17354085A Pending JPS6235199A (en) | 1985-08-07 | 1985-08-07 | Device for removing and collecting granular heat insulating material from double-shell low tmeperature tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6235199A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546410A (en) * | 1993-08-03 | 1996-08-13 | Nec Corporation | Semiconductor memory device with error self-correction system starting parity bit generation/error correction sequences only when increase of error rate is forecasted |
| JP2021032006A (en) * | 2019-08-28 | 2021-03-01 | 東京瓦斯株式会社 | Cold insulation material removal method and cold insulation material removal system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5537357A (en) * | 1978-09-09 | 1980-03-15 | Ricoh Co Ltd | Automatic setting system of printing position |
| JPS57184799A (en) * | 1981-05-01 | 1982-11-13 | Ishikawajima Harima Heavy Ind Co Ltd | Enclosing type retrieving method and device for powder heat insulator in tank |
-
1985
- 1985-08-07 JP JP17354085A patent/JPS6235199A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5537357A (en) * | 1978-09-09 | 1980-03-15 | Ricoh Co Ltd | Automatic setting system of printing position |
| JPS57184799A (en) * | 1981-05-01 | 1982-11-13 | Ishikawajima Harima Heavy Ind Co Ltd | Enclosing type retrieving method and device for powder heat insulator in tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546410A (en) * | 1993-08-03 | 1996-08-13 | Nec Corporation | Semiconductor memory device with error self-correction system starting parity bit generation/error correction sequences only when increase of error rate is forecasted |
| JP2021032006A (en) * | 2019-08-28 | 2021-03-01 | 東京瓦斯株式会社 | Cold insulation material removal method and cold insulation material removal system |
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