JPS61164989A - Gas shielding type composite diaphragm for liquid storage tank - Google Patents
Gas shielding type composite diaphragm for liquid storage tankInfo
- Publication number
- JPS61164989A JPS61164989A JP60000199A JP19985A JPS61164989A JP S61164989 A JPS61164989 A JP S61164989A JP 60000199 A JP60000199 A JP 60000199A JP 19985 A JP19985 A JP 19985A JP S61164989 A JPS61164989 A JP S61164989A
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- rubber
- liquid storage
- composite diaphragm
- gas
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔本発明の産業分野〕
本発明は、気密性液体貯蔵タンク、火力および原子力発
電用、給水貯蔵タンク、復水貯蔵タンクなどに使用する
気体遮断型複合ダイヤフラムに関する。すなわち、本発
明は、貯蔵量に一無関係に常に酸素などの気体の侵入を
防止して貯蔵する必要のある液体の貯蔵タンク用気体遮
断型複合ダイヤフラムに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of the Invention] The present invention relates to a gas-blocking composite diaphragm for use in airtight liquid storage tanks, thermal and nuclear power generation, water supply storage tanks, condensate storage tanks, and the like. That is, the present invention relates to a gas-blocking composite diaphragm for a liquid storage tank that needs to be stored while always preventing the intrusion of gases such as oxygen, regardless of the amount of liquid stored.
一般に、火力・原子カプラントにおけるボイラあるいは
炉心への給水に腐食防止上、溶存酸素の低減が要求され
る。Generally, it is required to reduce dissolved oxygen in water supply to boilers or reactor cores in thermal power plants and nuclear power plants to prevent corrosion.
このような場合、従来法として第３図に示し念ごとく、
画数液体貯蔵タンク１の気相部３を窒素など酸素以外の
難溶性（ヘンリ一定数の大きいもの）の気体を用いてカ
バーしているが。In such cases, as a conventional method, as shown in Figure 3,
The gas phase portion 3 of the liquid storage tank 1 is covered with a gas other than oxygen, such as nitrogen, which is sparingly soluble (having a large Henry's constant).
当該タンク１の水位が下がると窒素等のボンベ５よりカ
バーガスを水位変動に応じて補給しなければならず、逆
に、水位が上昇すると迅速に排出弁２よ〕、カバーガス
を排出する必要がある。このため、当該タンク１の液体
４の量に応じてカバーガスが消費され、実際に供用され
ているタンク１の容量が３００〜１０００ｍ！規模であ
ることよりカバーガス消費蓋は極めて大きい。When the water level of the tank 1 falls, cover gas must be replenished from the nitrogen cylinder 5 according to the water level fluctuation, and conversely, when the water level rises, the cover gas must be quickly discharged through the discharge valve 2. There is. For this reason, the cover gas is consumed according to the amount of liquid 4 in the tank 1, and the capacity of the tank 1 actually in use is 300 to 1000 m! Due to its scale, the cover gas consumption lid is extremely large.
また、従来法として＠４図に示したごとく、ダイヤフラ
ムゴム８を備えたものもある。これは当該タンク１の貯
蔵液体４と気相部３（こ＼では大気開放管２′により大
気と連通されているため気相部３は９気となっているａ
）の間にダイヤ７ラムゴム８が設けられ、浮フープ６
と重錘リング７によって常にダイヤフラムゴム８ｔ−一
定の力で伸長させ、水位変動に追従できる構造となって
おシ、このダイヤフラムゴム８の膜により大気中の酸素
が貯蔵液４の中に溶解すること分防止している。ダイヤ
フラムゴム８の材料としては、一般にニトリル・ブタジ
ェンゴム、クロロプレンゴムなどが用いられているが、
これらのゴム膜を透過する酸素の溶解量が大きく貯蔵液
の排出と新規液の張込みにより対処している。Furthermore, as a conventional method, there is also a method equipped with a diaphragm rubber 8, as shown in Figure @4. This is because the stored liquid 4 and the gas phase part 3 of the tank 1 are connected to the atmosphere through the atmosphere opening pipe 2', so the gas phase part 3 has 9 gas.
), a diamond 7 ram rubber 8 is provided between the floating hoops 6
The diaphragm rubber 8t is always extended with a constant force by the weight ring 7, and has a structure that can follow water level fluctuations.The film of the diaphragm rubber 8 dissolves oxygen in the atmosphere into the storage liquid 4. This is being prevented to a large extent. Nitrile butadiene rubber, chloroprene rubber, etc. are generally used as the material for the diaphragm rubber 8.
The amount of dissolved oxygen that permeates through these rubber membranes is large, and this is dealt with by draining the stored liquid and filling it with new liquid.
〔本発明の目的］
本発明は、前記従来例でみられるような大量のカバーガ
スを要しない液体貯蔵タンクの開発を意図し、そして、
前記従来より使用のダイヤ７ラムゴムに比較して気体、
特に酸素透過性が低い液体貯蔵タンク用気体遮断型複合
ダイヤフラムを提供することを目的とする。[Object of the present invention] The present invention intends to develop a liquid storage tank that does not require a large amount of cover gas as seen in the conventional example, and
Compared to the conventionally used Diamond 7 ram rubber, gas,
The object of the present invention is to provide a gas-barrier composite diaphragm for a liquid storage tank that has particularly low oxygen permeability.
すなわち、本発明は、可撓性を持つゴムの中間に気体遮
断性の大きい高分子フィルムをラミネートシ、加硫方式
により成形してなること？特徴とする液体貯蔵タンク用
気体遮断型複合ダイヤフラムである。That is, in the present invention, a polymer film with high gas barrier properties is laminated between flexible rubber and molded by a vulcanization method. This is a gas-blocking composite diaphragm for liquid storage tanks.
本発明において、高分子フィルムとしては、Ｊ［１０μ
〜１００μのエチレンビニルアルコール共重体フィルム
またはポリ塩化ビニリデンフィルムが好ましい。In the present invention, as the polymer film, J[10μ
~100μ ethylene vinyl alcohol copolymer film or polyvinylidene chloride film is preferred.
以下第１図および第２図に基づいて本発明の詳細な説明
する。第１図は本発明の具体例でろる複合ダイヤフラム
の構造を示し、第２図はこの複合ダイヤ２ラムの製造例
を示す。The present invention will be explained in detail below based on FIGS. 1 and 2. FIG. 1 shows the structure of a composite diaphragm according to a specific example of the present invention, and FIG. 2 shows an example of manufacturing this composite diaphragm.
ｔｆ、未加硫ゴム〔ニトリルブタジェンラバー（ＮＢＲ
）１８’の片側に糊引きした補強用ナイロン基布９を貼
付けて、片張シ加硫布（ＮＥＲ十基有基布０を製作する
。次に、ラミネートすル高分子フィルム（エチレンビニ
ルアルコール共重合体フィルムまたはポリ塩化ビニリデ
ンフィルム）１２と片張カ加硫布１０との接着力を増強
するため、高分子フィルム１２の表面にコロナ処理を施
した後、糊液に２回浸漬し、この高分子フィルム１２０
表面に均一に糊引きする。tf, unvulcanized rubber [nitrile butadiene rubber (NBR)
) 18' is pasted with a reinforcing nylon base fabric 9 on one side to produce a single-stripe vulcanized fabric (NER 10 base fabric 0).Next, a laminated polymer film (ethylene vinyl alcohol In order to enhance the adhesive force between the copolymer film (or polyvinylidene chloride film) 12 and the vulcanized fabric 10, the surface of the polymer film 12 is corona treated, and then dipped twice in a size solution. This polymer film 120
Spread the glue evenly on the surface.
更に、接着力向上を図る九め、片張り加硫布１０に［Ｌ
１５ｗＯ未加硫ゴＡ（ＮＢＲ）１ｔ６貼付ける。Furthermore, in order to improve the adhesive strength, [L
Paste 15wO unvulcanized rubber A (NBR) 1t6.
貼付けた未加硫ゴムシート１１を内側にして第２図に示
したごとく糊引きし念高分子フィルム１２を中央に挿入
し、ローラーにより、カレンダー合せを行ない複合する
。このカレンダー合せ時のローラ一温度を７０〜８０℃
に加温することにより、ゴムと高分子フィルム１２の接
着力を更に向上させる。カレンダー合せ後の複合シート
を加硫缶に入れ、１４０〜１５０℃Ｘ３ Ｈｒ加硫し、
厚さ２■の気体遮断型複合ダイヤフラムを製造する。With the pasted unvulcanized rubber sheet 11 on the inside, a pasted polymeric film 12 is inserted in the center as shown in FIG. 2, and then calendered and composited using a roller. The temperature of the roller when adjusting this calendar is 70 to 80℃.
The adhesive force between the rubber and the polymer film 12 is further improved by heating the rubber to the polymer film 12. The composite sheet after calendering was placed in a vulcanizing can and vulcanized at 140 to 150°C for 3 hours.
A gas-barrier composite diaphragm with a thickness of 2 cm is manufactured.
酸素等のガスがゴムシートを透過することは衆知である
が、火力、原子カプラントにおけるボイラあるいは炉心
への給水は腐食防止の観点より、ゴム膜を透過、溶解す
る溶存酸素量は極力低減する必要がある。It is well known that gases such as oxygen permeate through rubber sheets, but in order to prevent corrosion when supplying water to boilers or reactor cores in thermal power plants and nuclear couplants, it is necessary to reduce the amount of dissolved oxygen that permeates and dissolves through rubber membranes as much as possible. There is.
本発明は、プラントの品質向上、信頼性向上の一環とし
て、従来のゴム製ダイヤフラム中に性質の異なる低酸素
遮断型、高分子フィルムをラミネートさせ、７Ｍ硫によ
シ一体構造とし念ものでろるから、酸素の透過度を著し
く低減させると共に第４図に示した水位変動に対しても
追従できる柔軟性と、伸長に耐える構造を有する複合ダ
イヤフラムである。この低酸素遮断型複合ダイヤスラム
のガス遮断性は第５図に示したごとく、従来より使用し
ているゴム製ダイヤフラムに比べて、当然のことながら
著しく低減し、十分な酸素遮断効果を有している。As a part of improving the quality and reliability of plants, the present invention has been developed by laminating a low oxygen barrier type polymer film with different properties on a conventional rubber diaphragm, and creating an integrated structure with 7M sulfuric acid. Therefore, it is a composite diaphragm that significantly reduces oxygen permeability, has flexibility that can follow the water level fluctuations shown in FIG. 4, and has a structure that can withstand expansion. As shown in Figure 5, the gas barrier properties of this low-oxygen barrier type composite diaphragm are, of course, significantly lower than those of conventionally used rubber diaphragms, and it has sufficient oxygen barrier effects. ing.
さらに、本発明においては、気体（特に酸素）速断フィ
ルム、すなわち、高分子フィルムがゴムによって保護さ
れているため、物理的な力による傷などの発生がなく、
表面に貼付する場合に比べて著しく寿命を伸ばすことが
できる効果が生ずるものである。Furthermore, in the present invention, since the gas (particularly oxygen) fast-acting film, that is, the polymer film, is protected by rubber, there is no occurrence of scratches due to physical force.
This has the effect of significantly extending the service life compared to when it is pasted on the surface.
第１図は本発明の具体例でめる複合ダイヤフラムの構造
を示し、第２図は同ダイヤフラムの製造例を示す。第３
図及び第４図は従来の貯蔵タンクの酸素溶解防止手段を
説明する図、第５図は本発明と従来品との経過時間に対
する酸素濃度の相関関係図である。
１・・・液体貯蔵タンク
２・・・排出弁
２′・・・大気開放管
３・・・気相部
４・・・貯蔵液体
５・・・ボンベ
６・・・浮フープ
７・・・重錘リング
８・・・ダイヤフラムゴム
８′・・・未加硫ゴム（ＮＢＲ）
９・・・補強用ナイロン基布
１０・・・片張ヤ加硫布
１１俸・・未加硫ゴム（ＭＢＲ）
１２・・・高分子フィルム
鬼１図
兎２図
！？
鬼５図
児５区
経過時間（Ｈｒ）FIG. 1 shows the structure of a composite diaphragm according to a specific example of the present invention, and FIG. 2 shows an example of manufacturing the same diaphragm. Third
4 and 4 are diagrams illustrating a conventional means for preventing oxygen dissolution in a storage tank, and FIG. 5 is a diagram showing the correlation of oxygen concentration with elapsed time between the present invention and a conventional product. 1... Liquid storage tank 2... Discharge valve 2'... Atmospheric release pipe 3... Gas phase section 4... Storage liquid 5... Cylinder 6... Floating hoop 7... Heavy Weight ring 8...Diaphragm rubber 8'...Unvulcanized rubber (NBR) 9...Nylon base fabric for reinforcement 10...Single layer vulcanized cloth 11 Pieces...Unvulcanized rubber (MBR) 12...Polymer film demon 1 figure rabbit 2 figure! ? Oni 5 Zuji 5 Ward Elapsed Time (Hr)
Claims (1)
イルムをラミネートし、加硫方式により成形してなるこ
とを特徴とする液体貯蔵タンク用気体遮断型複合ダイヤ
フラム。A gas-barrier type composite diaphragm for a liquid storage tank characterized by laminating a polymer film with high gas-barrier properties between flexible rubber and molding the film using a vulcanization method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60000199A JPS61164989A (en) | 1985-01-07 | 1985-01-07 | Gas shielding type composite diaphragm for liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60000199A JPS61164989A (en) | 1985-01-07 | 1985-01-07 | Gas shielding type composite diaphragm for liquid storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61164989A true JPS61164989A (en) | 1986-07-25 |
Family
ID=11467311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60000199A Pending JPS61164989A (en) | 1985-01-07 | 1985-01-07 | Gas shielding type composite diaphragm for liquid storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61164989A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013217784A (en) * | 2012-04-10 | 2013-10-24 | Hitachi-Ge Nuclear Energy Ltd | Water level guage of differential pressure type for atomic power plant |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028019A (en) * | 1973-07-19 | 1975-03-22 |
-
1985
- 1985-01-07 JP JP60000199A patent/JPS61164989A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028019A (en) * | 1973-07-19 | 1975-03-22 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013217784A (en) * | 2012-04-10 | 2013-10-24 | Hitachi-Ge Nuclear Energy Ltd | Water level guage of differential pressure type for atomic power plant |
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