JPH04341684A - Expansion for high temperature service - Google Patents

Expansion for high temperature service

Info

Publication number
JPH04341684A
JPH04341684A JP3113053A JP11305391A JPH04341684A JP H04341684 A JPH04341684 A JP H04341684A JP 3113053 A JP3113053 A JP 3113053A JP 11305391 A JP11305391 A JP 11305391A JP H04341684 A JPH04341684 A JP H04341684A
Authority
JP
Japan
Prior art keywords
bellows
cooling air
expansion
inflow port
inflow
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.)
Granted
Application number
JP3113053A
Other languages
Japanese (ja)
Other versions
JP2933144B2 (en
Inventor
Takeyuki Naito
内藤 剛行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebara Corp
Original Assignee
Ebara Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebara Corp filed Critical Ebara Corp
Priority to JP3113053A priority Critical patent/JP2933144B2/en
Publication of JPH04341684A publication Critical patent/JPH04341684A/en
Application granted granted Critical
Publication of JP2933144B2 publication Critical patent/JP2933144B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To blow a flow of cooling air to a bellows from a cooling air header via an inflow port and thereby check a temperature rise by installing the inflow port in the inward of the bellows to one side flange in an expansion, and setting up the cooling air header in this inflow port. CONSTITUTION:A bellows 3 and each of inner sleeves 4a, 4b are interposed between both flanges 2a and 2b of an expansion for high temperature service by each of keep flanges 5a, 5b, a bolt 6 and a nut 7. In addition, a tubular vibrationproof mat 8 and an expansion heat insulating member 9 are interposed between the bellows 3 and the inner sleeves 4a, 4b. In this case, two inflow ports 10, 11 are installed in space between the flange 2a and the inner sleeve 4a at the inflow side of a hot gaseous body A and the vibrationproof mat 8. A cooling air header 15 is installed at the side of the inflow port 10 on one side. With this constitution, cooling air B is fed to an inner circumferential part of the bellows 3 from the cooling air header 15 via the inflow port 11.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、高温ガス体の雰囲気で
用いる高温エキスパンションに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to high temperature expansions for use in hot gas atmospheres.

【0002】0002

【従来の技術】熱膨脹又は振動の弊害を防止するため、
機器への接続シュート又はダクトあるいはシュート相互
間又はダクト相互間には、エキスパンションが用いられ
ている。そのうち、ゴム製のエキスパンションでは、一
般に80℃前後が使用最高温度であり、高温用としての
アスベスト又はガラス繊維のものでも、300℃付近が
使用最高温度とされている。
[Prior Art] In order to prevent the harmful effects of thermal expansion or vibration,
Expansion is used for connecting chutes or ducts to equipment or between chutes or between ducts. For rubber expansions, the maximum operating temperature is generally around 80°C, and for high-temperature asbestos or glass fiber expansions, the maximum operating temperature is around 300°C.

【0003】従来の高温用エキパンションの一例を図4
について説明すると、高温ガス体の流れAをインナスリ
ーブ4a、4bでガイドし、ベローズ3に高温ガス体が
接触しないようにしている。更に、ベローズ3を保護す
るため筒状の伸縮断熱部材9によりベローズ3の内方を
覆っている。
FIG. 4 shows an example of a conventional high-temperature expansion.
To explain this, the flow A of the high-temperature gas is guided by the inner sleeves 4a and 4b to prevent the high-temperature gas from coming into contact with the bellows 3. Furthermore, in order to protect the bellows 3, the inside of the bellows 3 is covered with a cylindrical expandable heat insulating member 9.

【0004】0004

【発明が解決しようとする課題】高温ガス体の雰囲気が
、伸縮断熱部材9及びベローズ3の耐熱温度以上になる
と材質劣化が起こり、ベローズ3が破損してエキスパン
ションの寿命が短くなる。
[Problems to be Solved by the Invention] When the atmosphere of the high-temperature gas exceeds the heat resistance temperature of the expandable heat insulating member 9 and the bellows 3, material deterioration occurs, the bellows 3 is damaged, and the life of the expansion is shortened.

【0005】本発明は、寿命を長くする高温用エキスパ
ンションを提供することを目的としている。
The object of the present invention is to provide a high temperature expansion that has a long service life.

【0006】[0006]

【課題を解決するための手段】本発明によれば、エキス
パンションの一方のフランジのベローズ内方に流入孔を
穿設して該流入孔に冷却用空気ヘッダを取付けている。
According to the present invention, an inflow hole is bored inside the bellows of one flange of the expansion, and a cooling air header is attached to the inflow hole.

【0007】上記流入孔は、エキスパンションが振動機
械に接続されている場合、反振動体側に設け、冷却用空
気ヘッダに対する振動を防止するようにするのが好まし
い。
[0007] When the expansion is connected to a vibrating machine, the inflow hole is preferably provided on the side opposite to the vibrating body to prevent vibration against the cooling air header.

【0008】[0008]

【作用】上記のように構成された高温用エキスパンショ
ンにおいて、ベローズの内周には、冷却用空気ヘッダか
らの冷却用空気が流入孔から吹き込み、伸縮断熱部材か
ら高温ガス体へ流出して流れる。その冷却用空気により
ベローズの表面温度の上昇が抑えられ、材質の劣化が少
なくなる。
[Operation] In the high-temperature expansion configured as described above, cooling air from the cooling air header is blown into the inner periphery of the bellows through the inflow hole and flows out from the expandable heat insulating member into the high-temperature gas body. The cooling air suppresses the rise in the surface temperature of the bellows, reducing material deterioration.

【0009】[0009]

【実施例】以下図面を参照して本発明の実施例を説明す
る。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

【0010】図1において、高温用エキパンション1の
両フランジ2a、2b間には、ベローズ3とインナスリ
ーブ4a、4bとが押えフランジ5a、5b及びボルト
6、ナット7により介装されている。そして、ベローズ
3とインナスリーブ4a、4bとの間には、筒状の防振
マット8及び伸縮断熱部材9とが設けられている。前記
ベローズ3は、例えば厚さ1mmのコーネックスシリコ
ンプレートの2プライで形成されている。また、防振マ
ット8は、ガラスフェルトを例えば厚さ0.5mmのガ
ラスクロスで覆って形成されている。また、伸縮断熱部
材9は、ガラスフェルトを例えば0.5mmのガラスク
ロスと、ステンレスデミスタとで覆って形成されている
In FIG. 1, a bellows 3 and inner sleeves 4a, 4b are interposed between flanges 2a, 2b of a high temperature expansion 1 by presser flanges 5a, 5b, bolts 6, and nuts 7. A cylindrical anti-vibration mat 8 and an expandable heat insulating member 9 are provided between the bellows 3 and the inner sleeves 4a, 4b. The bellows 3 is formed of two plies of Conex silicon plates each having a thickness of 1 mm, for example. Further, the vibration-proof mat 8 is formed by covering glass felt with a glass cloth having a thickness of 0.5 mm, for example. Further, the expandable heat insulating member 9 is formed by covering glass felt with, for example, a 0.5 mm glass cloth and a stainless steel demister.

【0011】他方、高温ガス体Aの流入側のフランジ2
a及びインナスリーブ4aのベローズ3と防振マット8
との間の部分には、複数の流入孔10、11が対向して
穿設されている。そして、流入孔10側には、冷却用空
気ヘッダ15が設けられている。なお、流入孔10は、
エキスパンション1が振動機械に接続されている場合、
反振動体側に設けるのが好ましい。
On the other hand, the flange 2 on the inflow side of the high temperature gas body A
a and the bellows 3 of the inner sleeve 4a and the anti-vibration mat 8
A plurality of inflow holes 10 and 11 are formed facing each other in the portion between the two. A cooling air header 15 is provided on the inflow hole 10 side. Note that the inflow hole 10 is
If expansion 1 is connected to a vibrating machine,
It is preferable to provide it on the anti-vibration body side.

【0012】図2及び図3において、流入孔10、11
は孔径が、それぞれ8mm、5mmで、円周等配に例え
ば12個設けられている。前記冷却用空気ヘッダ15は
、流入孔10を覆うようにフランジ2aに溶着された断
面が半円の環状管16と、エルボ18と、ソケット20
と、これらを連結する直管17、19とからなっている
。そのソケット20は、図示しないエアコンプレッサに
接続されている。なお、図中の符号21はガスケット、
22はヤーンパッキングである。そして、フランジ2a
、2bの外径が例えば1000mmのエキスパンション
1の場合、環状管16の内容積は、例えば0.015m
3 、使用空気量45m3 /H、流出空気速度3.3
m/Sに設定されている。
In FIGS. 2 and 3, inflow holes 10 and 11
The holes have diameters of 8 mm and 5 mm, respectively, and are provided, for example, 12 holes equally spaced around the circumference. The cooling air header 15 includes an annular pipe 16 with a semicircular cross section welded to the flange 2a so as to cover the inflow hole 10, an elbow 18, and a socket 20.
and straight pipes 17 and 19 that connect these. The socket 20 is connected to an air compressor (not shown). In addition, the code 21 in the figure is a gasket,
22 is yarn packing. And flange 2a
, 2b has an outer diameter of, for example, 1000 mm, the internal volume of the annular tube 16 is, for example, 0.015 m.
3. Air usage: 45m3/h, Outflow air velocity: 3.3
It is set to m/S.

【0013】このように構成されているので、ベローズ
3の内周部分には、冷却用空気ヘッダ15からの冷却用
空気が流入孔11から吹き込まれた冷却空気の流れBに
よりベローズ3が冷却される。したがって、ベローズ3
の表面温度の上昇が抑えられる。
With this structure, the bellows 3 is cooled by the cooling air flow B in which the cooling air from the cooling air header 15 is blown into the inner peripheral portion of the bellows 3 through the inflow hole 11. Ru. Therefore, bellows 3
The rise in surface temperature is suppressed.

【0014】[0014]

【発明の効果】本発明は、以上説明したように構成され
ているので、ベローズの表面温度の上昇を抑え、材質の
劣化を少なくしてエキスパンションの寿命を長くするこ
とができる。
Since the present invention is constructed as described above, it is possible to suppress the increase in the surface temperature of the bellows, reduce the deterioration of the material, and extend the life of the expansion.

【図面の簡単な説明】[Brief explanation of drawings]

【図1】本発明の一実施例を示す側断面図。FIG. 1 is a side sectional view showing one embodiment of the present invention.

【図2】図1のX矢視図。FIG. 2 is a view taken along the X arrow in FIG. 1.

【図3】冷却用空気ヘッダを示す正面図。FIG. 3 is a front view showing a cooling air header.

【図4】従来のエキスパンションを示す側断面図。FIG. 4 is a side sectional view showing a conventional expansion.

【符号の説明】[Explanation of symbols]

A・・・高温ガス体の流れ B・・・冷却用空気の流れ 1・・・高温用エキスパンション 2a、2b・・・フランジ 3・・・ベローズ 4a、4b・・・インナスリーブ 5a、5b・・・押えフランジ 8・・・防振マット 9・・・伸縮断熱部材 10、11・・・流入孔 12、13・・・流出孔 15・・・冷却用空気ヘッダ 18・・・エルボ 20・・・ソケット 21・・・ガスケット 22・・・ヤーンパッキング A...Flow of high temperature gas body B...Cooling air flow 1...High temperature expansion 2a, 2b...flange 3...Bellows 4a, 4b...Inner sleeve 5a, 5b...presser flange 8... Anti-vibration mat 9...Expansible insulation member 10, 11...Inflow hole 12, 13...Outflow hole 15... Cooling air header 18...Elbow 20... socket 21...Gasket 22...Yarn packing

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  エキスパンションの一方のフランジの
ベローズ内方に流入孔を穿設して該流入孔に冷却用空気
ヘッダを取付けたことを特徴とする高温用エキスパンシ
ョン。
1. A high-temperature expansion, characterized in that an inflow hole is bored inside the bellows of one flange of the expansion, and a cooling air header is attached to the inflow hole.
JP3113053A 1991-05-17 1991-05-17 High temperature expansion Expired - Fee Related JP2933144B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3113053A JP2933144B2 (en) 1991-05-17 1991-05-17 High temperature expansion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3113053A JP2933144B2 (en) 1991-05-17 1991-05-17 High temperature expansion

Publications (2)

Publication Number Publication Date
JPH04341684A true JPH04341684A (en) 1992-11-27
JP2933144B2 JP2933144B2 (en) 1999-08-09

Family

ID=14602307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3113053A Expired - Fee Related JP2933144B2 (en) 1991-05-17 1991-05-17 High temperature expansion

Country Status (1)

Country Link
JP (1) JP2933144B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10122462A (en) * 1996-10-17 1998-05-15 Ask:Kk Joint device
JP2000230655A (en) * 1999-02-10 2000-08-22 Maezawa Ind Inc Mounting structure of air valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6021302B2 (en) * 2011-03-31 2016-11-09 三菱重工コンプレッサ株式会社 Expansion joint and steam turbine equipment provided with the same
JP5842224B2 (en) * 2012-03-14 2016-01-13 西武ポリマ化成株式会社 External surface reinforcing structure of existing flexible tube and its external surface reinforcing method
KR101587872B1 (en) * 2014-08-27 2016-01-22 국방과학연구소 Applicable bellows to high-temperature environments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10122462A (en) * 1996-10-17 1998-05-15 Ask:Kk Joint device
JP2000230655A (en) * 1999-02-10 2000-08-22 Maezawa Ind Inc Mounting structure of air valve

Also Published As

Publication number Publication date
JP2933144B2 (en) 1999-08-09

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