JPH01188793A - Device for protecting bellows type pipe joint - Google Patents
Device for protecting bellows type pipe jointInfo
- Publication number
- JPH01188793A JPH01188793A JP63007437A JP743788A JPH01188793A JP H01188793 A JPH01188793 A JP H01188793A JP 63007437 A JP63007437 A JP 63007437A JP 743788 A JP743788 A JP 743788A JP H01188793 A JPH01188793 A JP H01188793A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- displacement
- impact pressure
- absorbing
- pressure wave
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 33
- 229910052708 sodium Inorganic materials 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
- F16L27/11—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
- F16L27/111—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations the bellows being reinforced
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、変位吸収ベローズにより配管の変位を吸収す
るようにしたベローズ型管継手に関し、さらに詳しくは
配管内の流体を介しで伝わる衝撃圧力波により変位吸収
ベローズが破損されることを防止するベローズ型管継手
の保護装置に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a bellows-type pipe joint that absorbs displacement of piping with a displacement-absorbing bellows, and more particularly relates to a bellows-type pipe joint that absorbs displacement of piping with a displacement-absorbing bellows. The present invention relates to a protection device for a bellows type pipe joint that prevents a displacement absorbing bellows from being damaged by waves.
（従来技術）
ユニでは、従来技術としで、ベローズ型管継手を高速増
殖炉の冷却系統に使用した場合を例示するが、本発明の
適用は、これに限定されるものではなく、流路の流体を
介しで伝わる衝撃圧力波によりベローズ型管継手の変形
吸収ベローズが破損されるおそれのあるすべてに適用可
能である。(Prior art) Uni will exemplify the case where a bellows-type pipe joint is used in the cooling system of a fast breeder reactor as a conventional technology, but the application of the present invention is not limited to this, and the application of the present invention is not limited to this. It is applicable to all cases where the deformation-absorbing bellows of a bellows-type pipe joint may be damaged by impact pressure waves transmitted through fluid.
高速増殖炉では、原子炉の冷却材としで液体ナトリウム
を用いている。冷却系統は、二つのナトリウム循環系統
から成り、まず原子炉の熱を一次系の液体ナトリウムに
伝え、次に一次系の熱を二次系の液体ナトリウムに伝え
、二次系に設けられた蒸気発生器において熱交換を行う
ものである。Fast breeder reactors use liquid sodium as the reactor coolant. The cooling system consists of two sodium circulation systems: first, the heat from the reactor is transferred to the liquid sodium in the primary system, then the heat from the primary system is transferred to the liquid sodium in the secondary system, and the heat is transferred to the liquid sodium in the secondary system. Heat exchange is performed in the generator.
この冷却系統では、配管の熱膨張による変位を吸収する
必要があるため、配管の継手としで、ベローズ型管継手
が使用されている。ベローズ型管継手は、変位吸収ベロ
ーズの収縮性や清白性によって配管の変位を吸収するも
のである。In this cooling system, it is necessary to absorb displacement due to thermal expansion of the pipes, so bellows-type pipe joints are used as joints for the pipes. Bellows-type pipe joints absorb displacement of piping through the shrinkability and cleanliness of the displacement-absorbing bellows.
（発明が解決しようとする問題点）
ベローズ型管継手では、変位吸収ベローズが柔軟なほど
、配管の変位吸収性が良い。そのため、変位吸収ベロー
ズは、薄肉であることが要求される。(Problems to be Solved by the Invention) In a bellows-type pipe joint, the more flexible the displacement-absorbing bellows, the better the displacement-absorbing ability of the piping. Therefore, the displacement absorbing bellows is required to be thin.
しかし、一方では、次のような事情のため、変位吸収ベ
ローズを厚内とすることを余儀なくされていた。However, on the other hand, due to the following circumstances, the displacement absorbing bellows has been forced to have a thick inner thickness.
上記２次冷却系の蒸気発生器では、伝熱管の破損による
水−ナトリウム反応が起きで、大きな衝撃圧力を生じる
ことを想定しなければならない。この衝撃圧力は、衝撃
圧力波となって配管内の流体を介しで伝播し、ベローズ
型管継手の変位吸収ベローズに作用する。従来は、この
衝撃圧力波に耐乏るため、変位吸収ベローズを厚肉とせ
ざるをえなかった。In the steam generator of the secondary cooling system, it must be assumed that a water-sodium reaction occurs due to breakage of the heat transfer tube, and a large impact pressure is generated. This impact pressure becomes an impact pressure wave that propagates through the fluid in the pipe and acts on the displacement absorbing bellows of the bellows-type pipe joint. Conventionally, displacement absorbing bellows had to be made thick in order to withstand these impact pressure waves.
つまり、蒸気発生器における衝撃の発生という非常に確
率の低い事態のために、変位吸収ベローズを厚肉化せざ
るをえず、配管の変位吸収というベローズ型管継手の有
効性が低減されていたのである。In other words, due to the extremely low probability of an impact occurring in a steam generator, the displacement-absorbing bellows had to be made thicker, reducing the effectiveness of the bellows-type pipe joint in absorbing piping displacement. It is.
上記欠点を改善するものとしで、第２図に示すような、
バウンダリベローズ１１とバックアップベローズ１２と
を内外２重に設けたベローズ型管継手も従来公知である
。即ち、ベローズ型管継手１３において、バウンダリベ
ローズ１１を内周側に、バックアップベローズ１２を外
周側に設置し、バウンダリベローズ１１の破損による流
体の漏洩をバックアップベローズ１２が補償するもので
ある。In order to improve the above drawbacks, as shown in Figure 2,
A bellows type pipe joint in which a boundary bellows 11 and a backup bellows 12 are provided in double layers inside and outside is also conventionally known. That is, in the bellows type pipe joint 13, the boundary bellows 11 is installed on the inner peripheral side and the backup bellows 12 is installed on the outer peripheral side, and the backup bellows 12 compensates for fluid leakage due to damage to the boundary bellows 11.
上記内外２重の変位吸収ベローズを設けたベローズ型管
継手においても、やはりトータルの厚みが大きく、変位
吸収性の低下は免れない。Even in the above-mentioned bellows-type pipe joint provided with double internal and external displacement-absorbing bellows, the total thickness is still large, and the displacement-absorbing property is inevitably reduced.
そこで、本発明の目的は、変位吸収ベローＸを厚内化す
ることなく、衝撃圧力波を低減しで変位吸収ベローズを
保護するベローズ型管継手の保護装置を提供することに
ある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a protection device for a bellows-type pipe joint that protects the displacement-absorbing bellows by reducing impact pressure waves without increasing the thickness of the displacement-absorbing bellows.
（問題点を解決するための手段）
上記目的を達成するため、本発明は、変位吸収ベローズ
により配管の変位を吸収するベローズ型管継手において
、継手本体における変位吸収ベローズよりも衝撃圧力波
発生源側ｉこ、変位吸収ベローズの破損強度に比較しで
低ＩＩ％強度で変形または破損するｌ！！！圧力波吸収
部が設けられて構成されている。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a bellows-type pipe joint in which the displacement of piping is absorbed by a displacement-absorbing bellows, which is a source of shock pressure waves rather than a displacement-absorbing bellows in the joint body. On the other hand, it deforms or breaks at a lower II% strength compared to the breakage strength of the displacement absorbing bellows! ! ! A pressure wave absorbing section is provided.
（実施例）
以下に、本発明の一実施例を第１図を参照しで説明する
。(Example) An example of the present invention will be described below with reference to FIG.
ここでは、高速増殖炉の冷却系統にベローズ型管継手が
使用された場合を実施例としでいる。Here, an example is given in which a bellows-type pipe joint is used in the cooling system of a fast breeder reactor.
図には、ベローズ型管継手１を介しで配管２ａ、２ｂが
接続されている状態が示されている。The figure shows a state in which pipes 2a and 2b are connected via a bellows-type pipe joint 1.
符号３は、配管２ａ、２ｂの変位を吸収する変位吸収ベ
ローズである。Reference numeral 3 indicates a displacement absorbing bellows that absorbs displacement of the pipes 2a and 2b.
継手本体４における変位吸収ベローズ３より図示しない
衝撃圧力波発生源である蒸気発生器側（図の左側）に、
衝撃圧力波吸収部５が設けられている。本実施例の衝撃
圧力波吸収部５は、継手本体４の周方向に膨出する隔室
６と、この隔室６と継手流路７とを区画する変形壁８に
より構成されている。変形壁８の強度は、前記変位吸収
ベローズ３より低くする。また、本実施例では、変形壁
８の形状がベローズ型となっているが、リング型その他
任意の形状としでより１゜隔室６の内部は、真空または
不活性〃ス雰囲気とされている。From the displacement absorbing bellows 3 in the joint body 4 to the steam generator side (left side in the figure) which is a source of shock pressure waves (not shown),
An impact pressure wave absorber 5 is provided. The impact pressure wave absorbing section 5 of this embodiment is composed of a compartment 6 that bulges out in the circumferential direction of the joint body 4, and a deformable wall 8 that partitions the compartment 6 and the joint flow path 7. The strength of the deformable wall 8 is made lower than that of the displacement absorbing bellows 3. Further, in this embodiment, the shape of the deformable wall 8 is a bellows type, but the shape of the deformable wall 8 is a ring type or any other shape. .
上記のように構成された本発明の一実施例は、次のよう
に作用する。One embodiment of the present invention configured as described above operates as follows.
今、蒸気発生器の伝熱管の破損しで水−ナトリウム反応
により衝撃が発生したとする。そうすると、配管内の流
体を介しで矢印Ａの方向に［１ｊ撃圧力波が粗密波とし
で進行する。Suppose that a heat exchanger tube in a steam generator breaks and a shock occurs due to a water-sodium reaction. Then, the impulse pressure wave [1j] advances in the direction of arrow A through the fluid in the pipe as a compression wave.
衝撃圧力波がベローズ型管継手１に到達すると、衝撃圧
力波吸収部５の変形壁８が隔室６側へ変形する。この変
形壁８の変形により、衝撃圧力波のエネルギが吸収され
、変位吸収ベローズ３に作用するｍｓ圧力波の強さが大
幅に低減さ、れ、変位吸収ベローズ３の破損が防止され
る。When the impact pressure wave reaches the bellows type pipe joint 1, the deformable wall 8 of the impact pressure wave absorber 5 deforms toward the compartment 6 side. Due to this deformation of the deformable wall 8, the energy of the impact pressure wave is absorbed, the strength of the ms pressure wave acting on the displacement absorbing bellows 3 is significantly reduced, and damage to the displacement absorbing bellows 3 is prevented.
尚、上記は本発明の一実施例であって、本発明は上記実
−施例に限定されるものではない。Note that the above is one embodiment of the present invention, and the present invention is not limited to the above embodiment.
例えば、上記実施例では、変位吸収ベローズの内側から
圧力の作用する内圧型のベローズ型継手を示したが、変
位吸収ベローズの外側から圧力の作用する外圧型のベロ
ーズ型継手にも本発明が適用されることは明らかである
。For example, in the above embodiment, an internal pressure type bellows type joint is shown in which pressure is applied from the inside of the displacement absorbing bellows, but the present invention is also applicable to an external pressure type bellows type joint in which pressure is applied from the outside of the displacement absorbing bellows. It is clear that
また、上記実施例では、ＩＩｉ撃圧力波のエネルギを衝
撃圧力波吸収部の変形壁変形により吸収しでいるが、衝
撃圧力波吸収部の変形壁の破損により衝撃圧力波のエネ
ルギを吸収するようにしでもよい。Further, in the above embodiment, the energy of the IIi impact pressure wave is absorbed by the deformation of the deformed wall of the impact pressure wave absorption section, but the energy of the impact pressure wave is absorbed by the damage of the deformed wall of the impact pressure wave absorption section. You can do it.
更にまた、本発明はバラングリベローズとバックアップ
ベローズとを内外２重に設置したベローズ型管継手にも
適用することができる。Furthermore, the present invention can also be applied to a bellows-type pipe joint in which a balancing bellows and a backup bellows are installed twice inside and outside.
（発明の効果）
本発明では、継手本体における変位吸収ベローズより衝
撃圧力波発生源側に、変位吸収ベローズに比較しで強度
の低い衝撃圧力波吸収部が設けられており、配管を介し
で伝わる衝撃圧力波のエネルギを該衝撃圧力波吸収部が
吸収するので、変位吸収ベローズを薄肉としでも変位吸
収ベローズの変形、破損を防止できる。このため、変位
吸収性の高いベローズ型管継手が得られるものである。(Effects of the Invention) In the present invention, an impact pressure wave absorbing portion having lower strength than the displacement absorbing bellows is provided on the impact pressure wave generation source side of the displacement absorbing bellows in the joint body, and the shock pressure wave absorbing portion is provided with a lower strength than the displacement absorbing bellows. Since the impact pressure wave absorbing portion absorbs the energy of the impact pressure wave, deformation and damage of the displacement absorbing bellows can be prevented even if the displacement absorbing bellows is made thin. Therefore, a bellows-type pipe joint with high displacement absorption properties can be obtained.
第１図は、本発明の一実施例を示す断面図、ＰＩＳ２図
は従来公知の２重ベローＸ型の管継手を示す断面図であ
る。
１：ベローズ型管継手 ２：配管
３：変位吸収ベローズ ４：継手本体
５：衝撃圧力波吸収部 ６：隔室 ７：継手流路８：変
形壁
代理人 弁理士 辻 三部（はｈ４名）第１図
第２図FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventionally known double bellows X-type pipe joint. 1: Bellows type pipe joint 2: Piping 3: Displacement absorbing bellows 4: Joint body 5: Impact pressure wave absorbing part 6: Compartment 7: Joint flow path 8: Deformed wall agent Patent attorney Mibe Tsuji (4 people) Figure 1 Figure 2
Claims (1)
型管継手において、継手本体における変位吸収ベローズ
より衝撃圧力波発生源側に、変位吸収ベローズの破損強
度に比較しで低い強度で変形または破損する衝撃圧力波
吸収部が設けられて成ることを特徴とするベローズ型管
継手の保護装置。In a bellows-type pipe fitting that absorbs piping displacement with a displacement-absorbing bellows, impact pressure that causes deformation or breakage occurs on the side of the impact pressure wave generation source from the displacement-absorbing bellows in the fitting body with a strength lower than that of the displacement-absorbing bellows. A protection device for a bellows type pipe joint, characterized in that it is provided with a wave absorbing section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63007437A JPH01188793A (en) | 1988-01-19 | 1988-01-19 | Device for protecting bellows type pipe joint |
| FR8817542A FR2626057B1 (en) | 1988-01-19 | 1988-12-30 | PROTECTION DEVICE FOR A BELLOWS-TYPE PIPE CONNECTION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63007437A JPH01188793A (en) | 1988-01-19 | 1988-01-19 | Device for protecting bellows type pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01188793A true JPH01188793A (en) | 1989-07-28 |
Family
ID=11665839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63007437A Pending JPH01188793A (en) | 1988-01-19 | 1988-01-19 | Device for protecting bellows type pipe joint |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01188793A (en) |
| FR (1) | FR2626057B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003522664A (en) * | 2000-02-09 | 2003-07-29 | バイエリッシェ モートーレン ウエルケ アクチエンゲゼルシャフト | Vibration damper for hydraulic vehicle brake system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61290293A (en) * | 1985-06-17 | 1986-12-20 | 三菱重工業株式会社 | Pipe joint |
| JPS62177395A (en) * | 1986-01-29 | 1987-08-04 | 横浜ゴム株式会社 | Surge-pressure shock absorber |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2916052A (en) * | 1955-01-04 | 1959-12-08 | Melville F Peters | Energy transfer system |
| DE1501542C3 (en) * | 1966-05-31 | 1975-02-06 | Interatom Internationale Atomreaktorbau Gmbh, 5060 Bensberg | Heat exchanger system for the exchange media liquid metal / water |
| GB1276838A (en) * | 1968-07-18 | 1972-06-07 | Atomic Energy Authority Uk | Improvements in or relating to pressure relief devices |
| US3880193A (en) * | 1974-02-07 | 1975-04-29 | Hydril Co | Surge absorber for cryogenic fluids |
| DE2714830C3 (en) * | 1977-04-02 | 1979-10-11 | J.M. Voith Gmbh, 7920 Heidenheim | Pipe connection for riser strands |
-
1988
- 1988-01-19 JP JP63007437A patent/JPH01188793A/en active Pending
- 1988-12-30 FR FR8817542A patent/FR2626057B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61290293A (en) * | 1985-06-17 | 1986-12-20 | 三菱重工業株式会社 | Pipe joint |
| JPS62177395A (en) * | 1986-01-29 | 1987-08-04 | 横浜ゴム株式会社 | Surge-pressure shock absorber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003522664A (en) * | 2000-02-09 | 2003-07-29 | バイエリッシェ モートーレン ウエルケ アクチエンゲゼルシャフト | Vibration damper for hydraulic vehicle brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2626057A1 (en) | 1989-07-21 |
| FR2626057B1 (en) | 1992-08-07 |
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