JPS6153593B2 - - Google Patents
Info
- Publication number
- JPS6153593B2 JPS6153593B2 JP56015297A JP1529781A JPS6153593B2 JP S6153593 B2 JPS6153593 B2 JP S6153593B2 JP 56015297 A JP56015297 A JP 56015297A JP 1529781 A JP1529781 A JP 1529781A JP S6153593 B2 JPS6153593 B2 JP S6153593B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- fluid
- fitting member
- bellows
- slide fitting
- 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
- 239000012530 fluid Substances 0.000 claims description 23
- 230000008602 contraction Effects 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 4
- 238000009795 derivation Methods 0.000 claims 1
- 239000002826 coolant Substances 0.000 description 42
- 239000007788 liquid Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 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 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Description
【発明の詳細な説明】
本発明は、配管の熱伸縮吸収継手、さらに詳細
には、原子炉プラント冷却系のように、加熱流体
の通過によつて熱伸縮する流体移送パイプを容器
に接続する熱伸縮吸収継手の改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal expansion/contraction absorption joint for piping, and more particularly for connecting a fluid transfer pipe that expands and contracts thermally with the passage of a heated fluid to a vessel, such as in a nuclear reactor plant cooling system. This paper relates to improvements in heat expansion and contraction absorption joints.
たとえば、液体ナトリウム冷却高速炉の冷却系
においては、原子炉容器、中間熱交換器、循環ポ
ンプ、蒸気発生器などの各機器間を冷却材移送パ
イプで接続しているが、パイプ内を通過する冷却
材は、原子炉運転時と停止時との温度差が数百度
にも達するため、そのパイプの熱膨張（または熱
収縮、以下、熱伸縮と総称する）は、配管10ｍ当
り、数cmにもなる。 For example, in the cooling system of a liquid sodium-cooled fast reactor, the reactor vessel, intermediate heat exchanger, circulation pump, steam generator, and other equipment are connected by coolant transfer pipes. The difference in temperature of the coolant between when the reactor is operating and when it is shut down is several hundred degrees, so the thermal expansion (or thermal contraction, hereinafter collectively referred to as "thermal expansion and contraction") of the pipe is several centimeters per 10 m of pipe. It will also happen.
このような場合、従来においては、冷却材移送
パイプを複数に屈曲させることにより、当該パイ
プの熱伸縮を吸収し、配管破損をさけるようにし
ているが、この方法によると、各機器間の配管長
は、その各機器間の最短距離の数倍にも達し、大
きなスペースを確保しなければならない。 In such cases, conventionally, the coolant transfer pipe is bent into multiple parts to absorb the thermal expansion and contraction of the pipe and avoid damage to the pipe. The length is several times the shortest distance between each piece of equipment, and a large amount of space must be secured.
また、冷却材移送パイプの途中にベローズを設
け、このベローズにより、パイプの熱伸縮を吸収
することも考えられるが、パイプ内を流れる流体
とベローズとが長期にわたつて接触することは、
ベローズの腐食を防止する上で問題があり、たと
えばパイプ内を流れる流体が液体ナトリウムであ
る場合、ベローズが破損して液体ナトリウムが外
部に流出すると、火災をまねくおそれがあり、プ
ラントに致命的損傷をあたえるおそれのあること
も考慮しておかなければならない。 It is also possible to provide a bellows in the middle of the coolant transfer pipe and use the bellows to absorb the thermal expansion and contraction of the pipe, but the possibility of long-term contact between the fluid flowing inside the pipe and the bellows is
There is a problem in preventing corrosion of the bellows. For example, if the fluid flowing inside the pipe is liquid sodium, if the bellows breaks and the liquid sodium leaks outside, there is a risk of fire and fatal damage to the plant. It must also be taken into consideration that there is a risk of giving
なお、「貫通管取付装置」と題する実開昭55−
119480号公報には、「防液堤壁１を貫通する貫通
管３の取付孔２に開口部４ａを固着した中空筒体
４の端部４ｃにベローズ７を接続し、該ベローズ
７の側板８を前記貫通管３に固着して貫通管３の
外周に中空部４Ｅを形成する」旨の記載がある
が、同公報に示されている「貫通管取付装置」
は、あくまでも防液堤壁、すなわち石油類や液化
ガスなどの貯槽の周辺に設けた防液堤壁を貫通す
る貫通管の衝撃や震動吸収に関するものである。
また、同公報に符号７で示されているベローズと
貫通管３との間に形成された中空部４Ｅ内には不
活性ガスが封入され、同構造によつて得られる効
果は、貫通管３から漏洩した石油や液化ガスなど
が外部の火気によつて爆裂する危険を排除すると
いうものであり、加熱流体の通過によつて熱伸縮
する流体移送パイプを容器に接続する場合に、そ
の加熱流体移送パイプの熱伸縮を吸収するという
点では認識していない。 In addition, the Utility Model 1983 entitled "Penetration Pipe Mounting Device"
Publication No. 119480 states, ``A bellows 7 is connected to an end 4c of a hollow cylinder 4 having an opening 4a fixed to the attachment hole 2 of a through pipe 3 penetrating the liquid barrier wall 1, and a side plate 8 of the bellows 7 is attached. is fixed to the through tube 3 to form a hollow part 4E on the outer periphery of the through tube 3.
This is strictly related to shock and vibration absorption of a penetrating pipe that penetrates a liquid dike wall, that is, a liquid dike wall installed around a storage tank for petroleum, liquefied gas, etc.
Further, an inert gas is sealed in a hollow portion 4E formed between the bellows and the through tube 3, which is indicated by reference numeral 7 in the same publication, and the effect obtained by this structure is that the through tube 3 This is to eliminate the risk of explosion of petroleum, liquefied gas, etc. leaked from a container due to external fire. It is not recognized that it absorbs the thermal expansion and contraction of the transfer pipe.
本発明は、加熱流体の通過によつて熱伸縮する
流体移送パイプを容器に接続する配管構造におい
て、その配管を最短距離で施工することができ、
大きなスペースを確保する必要がなく、経済的で
あるばかりでなく、熱伸縮を吸収する部材の腐食
をも効果的に防止することのできる、改良された
各種配管の熱伸縮吸収継手を提供しようとするも
のである。 The present invention provides a piping structure that connects a fluid transfer pipe that thermally expands and contracts due to the passage of heated fluid to a container, in which the piping can be constructed over the shortest distance.
It is an object of the present invention to provide improved heat expansion and contraction absorption joints for various types of piping, which do not require a large space and are not only economical, but also can effectively prevent corrosion of members that absorb thermal expansion and contraction. It is something to do.
上記目的を達成するため、本発明は、加熱流体
の通過によつて熱伸縮する流体移送パイプを容器
に接続する配管構造において、上記容器の配管貫
通部に、略筒状に成形されたパイプスライド嵌装
部材を取り付けるとともに、端部を他物により拘
束することなくフリーの状態として上記容器内に
臨設せしめた流体移送パイプを、パイプスライド
嵌装部材の内周に装着したパツキンを介してパイ
プ軸方向にスライド自在に嵌装し、パイプ接続部
の外周を被覆したベローズの一端を、当該パイプ
の外表面に固定し、かつ上記ベローズの他端を、
パイプスライド嵌装部材に固定してなることを特
徴とするものである。 In order to achieve the above object, the present invention provides a piping structure for connecting a fluid transfer pipe that thermally expands and contracts with the passage of heated fluid to a container, in which a pipe slide formed into a substantially cylindrical shape is installed in a pipe penetration part of the container. At the same time as attaching the fitting member, the fluid transfer pipe, which is installed in the container with the end free without being restrained by any other object, is inserted into the pipe shaft through a packing attached to the inner periphery of the pipe slide fitting member. One end of a bellows fitted so as to be slidable in the direction and covering the outer periphery of the pipe connection part is fixed to the outer surface of the pipe, and the other end of the bellows is fixed to the outer surface of the pipe, and the other end of the bellows is
It is characterized in that it is fixed to a pipe slide fitting member.
以下、本発明を、液体ナトリウム冷却高速炉プ
ラントに実施した場合を例にとり、図面にもとづ
いて説明すると、第１図は本発明継手を熱交換器
に設置した原子炉プラント冷却系の配管図であ
る。同図において、１は原子炉容器、２は熱交換
器を示し、原子炉容器１と熱交換器２とは、ステ
ンレス鋼からなる冷却材移送パイプ３によつて接
続されており、熱交換器２で熱交換された冷却材
は、図示を省略した他の冷却材移送パイプを介
し、原子炉容器１にもどされる。第２図は第１図
のＡ部を拡大して示す縦断面図で、継手４は、熱
交換器２に設置されている。この継手４の構成を
具体的に説明すると、熱交換器２の配管貫通部に
は、略筒状に成形されたパイプスライド嵌装部材
５が取り付けられている。端部を他物により拘束
されることなくフリーの状態として上記熱交換器
２内に臨設せしめられた冷却材移送パイプ３は、
パイプスライド嵌装部材５の内周に装着したパツ
キン６および７を介し、熱交換器２内の気密を保
持した状態で、パイプ軸方向にスライド自在に嵌
装されている。冷却材移送パイプ３の接続部外周
を被覆したベローズ８の一端は、そのフランジ８
ａを介し、パイプ３の外表面に固定されている。
また、ベローズ８の他端は、パイプスライド嵌装
部材５のフランジ５ａに固定されている。９は冷
却材移送パイプ３から漏出した冷却材を外部に導
出する冷却材導出パイプであつて、ベローズ８内
に臨設している。１０はこれまた冷却材移送パイ
プ３から漏出した冷却材を外部に導出する冷却材
導出パイプであつて、二個のパツキン６および７
で区画されたパイプスライド嵌装部材５内に臨設
している。 Hereinafter, the present invention will be explained based on drawings, taking as an example the case where the present invention is implemented in a liquid sodium cooled fast reactor plant. Fig. 1 is a piping diagram of a reactor plant cooling system in which the joint of the present invention is installed in a heat exchanger. be. In the figure, 1 indicates a reactor vessel, and 2 indicates a heat exchanger. The reactor vessel 1 and the heat exchanger 2 are connected by a coolant transfer pipe 3 made of stainless steel. The coolant heat exchanged in step 2 is returned to the reactor vessel 1 via another coolant transfer pipe (not shown). FIG. 2 is an enlarged vertical cross-sectional view of section A in FIG. 1, in which the joint 4 is installed in the heat exchanger 2. To explain the configuration of this joint 4 in detail, a pipe slide fitting member 5 formed into a substantially cylindrical shape is attached to a pipe penetration portion of the heat exchanger 2. The coolant transfer pipe 3 is installed inside the heat exchanger 2 with its end free and not restricted by other objects.
The pipe slide fitting member 5 is fitted via gaskets 6 and 7 attached to the inner periphery so as to be slidable in the pipe axial direction while maintaining airtightness within the heat exchanger 2. One end of the bellows 8 that covers the outer periphery of the connection part of the coolant transfer pipe 3 is connected to the flange 8 of the bellows 8.
It is fixed to the outer surface of the pipe 3 via a.
Further, the other end of the bellows 8 is fixed to the flange 5a of the pipe slide fitting member 5. Reference numeral 9 denotes a coolant outlet pipe that guides the coolant leaking from the coolant transfer pipe 3 to the outside, and is provided inside the bellows 8. Reference numeral 10 denotes a coolant outlet pipe that guides the coolant leaking from the coolant transfer pipe 3 to the outside, and includes two gaskets 6 and 7.
It is installed inside the pipe slide fitting member 5 which is partitioned by .
以上の構成において、原子炉運転時と停止時と
では、冷却材移送パイプ３内を通過する冷却材の
温度差が数百度にも達し、パイプ３に熱伸縮を生
じるが、かゝる場合、パイプ３は、パツキン６お
よび７を介し、熱交換器２内の気密を保持した状
態で、パイプスライド嵌装部材５内において軸方
向にスライドし、パイプ３の熱伸縮を吸収するこ
とができる。したがつて、第１図の場合、熱交換
器２とこれに隣接する原子炉容器１とを最短距離
で接続することができ、冷却材移送パイプを複雑
に屈曲させてパイプの熱膨張を吸収している従来
のように、大きなスペースを確保する必要はな
く、経済的である。また、このとき、冷却材移送
パイプ３内を流れる冷却材は、ベローズ８と接触
していないため、冷却材とベローズ８とが長期に
わたつて接触することによる不具合、すなわちベ
ローズ８の腐食を効果的に防止することができ、
この種継手部の安全性を向上させることができ
る。なお、パイプスライド嵌装部材５の内周に装
着したパツキンの数は、一個でもよいが、図示実
施例のように、二個あるいはそれ以上設ければ、
冷却材移送パイプ３からベローズ８に冷却材（あ
るいはその蒸気、以下、冷却材と総称する）が漏
出するのを、より一層確実に防止することができ
る。万一、パツキン６および７の気密が破れ、冷
却材移送パイプ３内の冷却材がベローズ８内に漏
出した場合は、図示のごとく、ベローズ８内に冷
却材導出パイプ９を臨設しておけば、漏出冷却材
は、冷却材導出パイプ９を介して外部に導出され
る。したがつて、この漏出冷却材を検出すること
により、直ちに却材冷の漏洩事故を検知すること
ができ、冷却材とベローズ８とを長期にわたつて
接触させておくものではない。また、冷却材導出
パイプ１０を、パツキン６および７で区画された
パイプスライド嵌装部材５内に臨設しておけば、
冷却材移送パイプ３からの漏出冷却材は、パイプ
１０を介して外部に導出される。したがつて、こ
の漏出冷却材を検出すれば、漏出冷却材がベロー
ズ８に到る以前においても、冷却材の漏洩事故を
検知することができる。 In the above configuration, the temperature difference of the coolant passing through the coolant transfer pipe 3 between when the reactor is operating and when it is stopped reaches several hundred degrees, causing thermal expansion and contraction in the pipe 3. The pipe 3 slides in the axial direction within the pipe slide fitting member 5 via the packings 6 and 7 while maintaining the airtightness within the heat exchanger 2, thereby absorbing thermal expansion and contraction of the pipe 3. Therefore, in the case of Fig. 1, the heat exchanger 2 and the adjacent reactor vessel 1 can be connected through the shortest distance, and the coolant transfer pipe can be bent in a complicated manner to absorb the thermal expansion of the pipe. It is economical as there is no need to secure a large space like in the conventional case. In addition, at this time, the coolant flowing inside the coolant transfer pipe 3 is not in contact with the bellows 8, so that problems caused by long-term contact between the coolant and the bellows 8, that is, corrosion of the bellows 8, are prevented. can be prevented,
The safety of this type of joint can be improved. Note that the number of gaskets attached to the inner periphery of the pipe slide fitting member 5 may be one, but if two or more gaskets are provided as in the illustrated embodiment,
It is possible to more reliably prevent the coolant (or its vapor, hereinafter collectively referred to as coolant) from leaking from the coolant transfer pipe 3 to the bellows 8. In the unlikely event that the airtightness of the packings 6 and 7 is broken and the coolant in the coolant transfer pipe 3 leaks into the bellows 8, a coolant outlet pipe 9 can be temporarily installed in the bellows 8 as shown in the figure. , the leaked coolant is led out to the outside via the coolant lead-out pipe 9. Therefore, by detecting this leaked coolant, a leakage accident of coolant cooling can be immediately detected, and the coolant and the bellows 8 are not kept in contact for a long period of time. Moreover, if the coolant lead-out pipe 10 is installed inside the pipe slide fitting member 5 divided by the packings 6 and 7,
The coolant leaking from the coolant transfer pipe 3 is led out through the pipe 10. Therefore, if this leaked coolant is detected, a coolant leakage accident can be detected even before the leaked coolant reaches the bellows 8.
第３図に本発明の他の実施例を示す。同図にお
いて、パイプスライド嵌装部材５内に臨設した冷
却材導出パイプ１０の他端は、熱交換器２内に臨
設されているため、一のパツキン６が破れた場
合、パイプ１０からの漏出冷却材は、熱交換器２
内に導出され、他の健全なパツキン７に大きな圧
力を加えるものではない。 FIG. 3 shows another embodiment of the invention. In the figure, the other end of the coolant outlet pipe 10 installed inside the pipe slide fitting member 5 is installed inside the heat exchanger 2, so if one packing 6 is torn, leakage from the pipe 10 will occur. The coolant is heat exchanger 2
It does not apply large pressure to other healthy gaskets 7.
以上、記述したように、本発明によれば、加熱
流体の通過によつて熱伸縮する流体移送パイプを
容器に接続する配管構造において、その配管を最
短距離で施工することができ、大きなスペースを
確保する必要がなく、経済的であるばかりか、ベ
ローズの腐食をも効果的に防止することができ
る。 As described above, according to the present invention, in a piping structure that connects a fluid transfer pipe that thermally expands and contracts due to the passage of heated fluid to a container, the piping can be constructed over the shortest distance, thereby saving a large space. There is no need to secure the bellows, which is not only economical, but also effectively prevents corrosion of the bellows.
第１図および第２図は本発明の一実施例を示
し、第１図は本発明継手を熱交換器に設置した原
子炉プラント冷却系の配管図、第２図は本発明の
要部である第１図のＡ部拡大縦断面図、第３図は
本発明の他の実施例を示す要部の縦断面図であ
る。
１……原子炉容器、２……熱交換器、３……冷
却材移送パイプ、４……継手、５……パイプスラ
イド嵌装部材、５ａ……フランジ、６および７…
…パツキン、８……ベローズ、８ａ……フラン
ジ、９および１０……冷却材導出パイプ。
Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a piping diagram of a nuclear reactor plant cooling system in which the joint of the present invention is installed in a heat exchanger, and Figure 2 shows the main parts of the present invention. 1 is an enlarged vertical cross-sectional view of part A in FIG. 1, and FIG. 3 is a vertical cross-sectional view of a main part showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Reactor vessel, 2... Heat exchanger, 3... Coolant transfer pipe, 4... Joint, 5... Pipe slide fitting member, 5a... Flange, 6 and 7...
...Packskin, 8...Bellows, 8a...Flange, 9 and 10...Coolant lead-out pipe.
Claims (1)
パイプを容器に接続する配管構造において、上記
容器の配管貫通部に、略筒状に成形されたパイプ
スライド嵌装部材を取り付けるとともに、端部を
他物により拘束することなくフリーの状態として
上記容器内に臨設せしめた流体移送パイプを、パ
イプスライド嵌装部材の内周に装着したパツキン
を介してパイプ軸方向にスライド自在に嵌装し、
パイプ接続部の外周を被覆したベローズの一端
を、当該パイプの外表面に固定し、かつ上記ベロ
ーズの他端を、パイプスライド嵌装部材に固定し
てなることを特徴とする配管の熱伸縮吸収継手。 ２ 流体移送パイプから漏出した流体を外部に導
出する流体導出パイプを、ベローズ内に臨設した
特許請求の範囲第１項記載の配管の熱伸縮吸収継
手。 ３ パイプスライド嵌装部材の内周にパツキンを
複数個装着し、流体移送パイプから漏出した流体
を外部に導出する流体導出パイプを、上記パツキ
ンで区画されたパイプスライド嵌装部材内に臨設
した特許請求の範囲第１項または第２項記載の配
管の熱伸縮吸収継手。 ４ 複数個のパツキンによつて区画されたパイプ
スライド嵌装部材内に臨設した流体導出パイプの
他端を、流体移送パイプをスライド自在に嵌装す
る容器内に臨設した特許請求の範囲第３項記載の
配管の熱伸縮吸収継手。[Scope of Claims] 1. In a piping structure for connecting a fluid transfer pipe that expands and contracts thermally as heated fluid passes through the container, a pipe slide fitting member formed into a substantially cylindrical shape is provided in the pipe penetration portion of the container. At the same time, the fluid transfer pipe, which is installed in the container with the end free without being restrained by other objects, can be freely slid in the axial direction of the pipe via a gasket attached to the inner periphery of the pipe slide fitting member. Fitted into
Heat expansion/contraction absorption for piping, characterized in that one end of a bellows covering the outer periphery of a pipe connection part is fixed to the outer surface of the pipe, and the other end of the bellows is fixed to a pipe slide fitting member. Fittings. 2. The thermal expansion/contraction absorption joint for piping according to claim 1, wherein a fluid outlet pipe is provided inside the bellows to guide fluid leaked from the fluid transfer pipe to the outside. 3. A patent in which a plurality of gaskets are attached to the inner periphery of a pipe slide fitting member, and a fluid outlet pipe for guiding fluid leaked from a fluid transfer pipe to the outside is provided inside the pipe slide fitting member partitioned by the gaskets. A thermal expansion/contraction absorption joint for piping according to claim 1 or 2. 4. Claim 3, wherein the other end of the fluid derivation pipe is provided within a pipe slide fitting member partitioned by a plurality of packings, and the other end of the fluid delivery pipe is provided within a container into which the fluid transfer pipe is slidably fitted. Heat expansion and contraction absorption fittings for the piping described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56015297A JPS57129991A (en) | 1981-02-03 | 1981-02-03 | Joint for absorbing heat expansion of pipings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56015297A JPS57129991A (en) | 1981-02-03 | 1981-02-03 | Joint for absorbing heat expansion of pipings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57129991A JPS57129991A (en) | 1982-08-12 |
| JPS6153593B2 true JPS6153593B2 (en) | 1986-11-18 |
Family
ID=11884887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56015297A Granted JPS57129991A (en) | 1981-02-03 | 1981-02-03 | Joint for absorbing heat expansion of pipings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57129991A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07111178B2 (en) * | 1989-04-07 | 1995-11-29 | 日精樹脂工業株式会社 | Fluid control device |
| GB9304547D0 (en) * | 1993-03-05 | 1993-04-21 | Risbridger W & J Ltd | Combined flange and seal |
| JP5933731B2 (en) * | 2012-09-28 | 2016-06-15 | ダイキン工業株式会社 | Thermal storage heat exchanger |
| JP2015116906A (en) * | 2013-12-18 | 2015-06-25 | カルソニックカンセイ株式会社 | Vehicle refrigerant heating device |
-
1981
- 1981-02-03 JP JP56015297A patent/JPS57129991A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57129991A (en) | 1982-08-12 |
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