JPH08303597A - Rubber gasket for flange and tightening method therefor - Google Patents

Rubber gasket for flange and tightening method therefor

Info

Publication number
JPH08303597A
JPH08303597A JP7131141A JP13114195A JPH08303597A JP H08303597 A JPH08303597 A JP H08303597A JP 7131141 A JP7131141 A JP 7131141A JP 13114195 A JP13114195 A JP 13114195A JP H08303597 A JPH08303597 A JP H08303597A
Authority
JP
Japan
Prior art keywords
gasket
thickness
flange
flanges
tightening
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.)
Withdrawn
Application number
JP7131141A
Other languages
Japanese (ja)
Inventor
Akinori Yamaguchi
明範 山口
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7131141A priority Critical patent/JPH08303597A/en
Publication of JPH08303597A publication Critical patent/JPH08303597A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Joints With Sleeves (AREA)
  • Gasket Seals (AREA)

Abstract

PURPOSE: To prevent leakage from a seat plane at tightening a gasket interposed between flanges of connecting piping, improve reliability, and facilitate setting of the gasket, concerning a gasket for flange for cooling sea water pipe used for a thermal power generation plant, a nuclear power generation plant, or the like. CONSTITUTION: A rubber gasket 1 interposed in a gap part between opposed flanges F, F provided on a connection part of sea water piping P is constituted so that a seat plane 2 is inside bolt holes provided on respective flanges, and setting holes 3 are provided on a plurality of positions in the vicinity of the outer circumference of the gasket in the circumferential direction. The thickness (t) of the gasket in a part position of the setting hole 3 is formed to be thinner than the thickness T of the seat plane. The thickness T of the seat plane is set so that the thickness formed when the gasket is tightened by bolts up to necessary tightening load becomes the same as the thickness (t) of the thin gasket on the part position of the setting hole 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は火力・原子力発電プラン
ト等で使用する冷却用海水管などのフランジ用ゴムガス
ケットに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber gasket for a flange of a cooling seawater pipe or the like used in a thermal power / nuclear power plant or the like.

【0002】[0002]

【従来の技術】火力・原子力発電プラント等において
は、冷却水として海水が使用されている。
2. Description of the Related Art Seawater is used as cooling water in thermal power plants and nuclear power plants.

【0003】海水配管は10k以下の常用圧力であるの
で一般に使用されているフランジ用ガスケットにはゴム
ガスケットが使用されている。なおPは接続用配管、F
はフランジ部を示す。
Since the seawater piping has a normal pressure of 10 k or less, a rubber gasket is used as a commonly used flange gasket. Note that P is a connecting pipe, F
Indicates a flange portion.

【0004】現在、使用されているゴムガスケットの形
状は、図2に示すようにセッティング用ボルト穴11を
外周部に円周方向に多数穿設した全面シートガスケット
10が使用されている。
As for the shape of the rubber gasket currently used, a full-faced sheet gasket 10 is used, as shown in FIG. 2, in which a large number of setting bolt holes 11 are provided in the circumferential direction in the circumferential direction.

【0005】なお図2(a)は側断面図、図2(b)は
図2(a)のX−X矢視正面図である。
2 (a) is a side sectional view, and FIG. 2 (b) is a front view taken along the line XX of FIG. 2 (a).

【0006】またシート面の面圧を上げるために図3に
示すようにガスケットのシート面12をフランジボルト
の内側までとしたリングガスケット20がある。なお図
3(a)は側断面図、図3(b)は図3(a)のX−X
矢視正面図である。
In order to increase the surface pressure of the seat surface, there is a ring gasket 20 in which the seat surface 12 of the gasket extends to the inside of the flange bolt as shown in FIG. Note that FIG. 3A is a side sectional view, and FIG. 3B is XX of FIG. 3A.
FIG.

【0007】[0007]

【発明が解決しようとする課題】ところで前述のよう
に、従来海水管フランジ用ゴムガスケットとしては、前
述図2、図3に示すような形状のゴムガスケットを使用
しているが図2の形状のものにおいては、シート面が非
常に大きくボルト締付時の面圧が不足になりがちになる
不具合がある。
As described above, as the conventional rubber gasket for seawater pipe flanges, the rubber gaskets having the shapes shown in FIGS. 2 and 3 are used. However, there is a problem that the seat surface is so large that the surface pressure tends to be insufficient when tightening the bolts.

【0008】この形状のものは経験的に言って設計圧力
10k(水圧試験圧力15k)以上においてシートリー
クが発生する可能性が高い。
Empirically speaking, in the case of this shape, a seat leak is likely to occur at a design pressure of 10 k (hydraulic test pressure of 15 k) or more.

【0009】また図3の形状のものにあっては、ゴムガ
スケットが軟質のためガスケットのセッティングが非常
に困難と云う不具合がある。
Further, in the case of the shape shown in FIG. 3, there is a problem in that it is very difficult to set the gasket because the rubber gasket is soft.

【0010】本発明は上記各不具合点を解消した新たな
フランジ用ゴムガスケットを提供することを目的として
いる。
It is an object of the present invention to provide a new rubber gasket for flanges which eliminates the above-mentioned problems.

【0011】[0011]

【課題を解決するための手段】前記目的を達成するため
の構成として本発明のフランジ用ゴムガスケットは、ゴ
ムガスケットのシート面をフランジボルト穴の内側と
し、かつ外周に円周方向に亘り複数個穿設したセッティ
ングボルト穴を有しさらに、シート面より半径方向外側
のガスケット厚さはガスケットを必要な締付荷重になる
まで締付けた時シート面が形成する厚さと同じ厚さにな
るよう薄肉部としたことを特徴としている。
As a structure for achieving the above object, a rubber gasket for a flange of the present invention has a sheet surface of the rubber gasket as an inner side of a flange bolt hole, and has a plurality of circumferentially extending outer circumferences. It has a drilled setting bolt hole, and the gasket thickness radially outside the seat surface is the same as the thickness formed by the seat surface when the gasket is tightened to the required tightening load. It is characterized by

【0012】また、配管を、対向配置したフランジ部で
接続締着する締付方法としては、対向するフランジの隙
間が請求項1記載のガスケットの薄肉部と同じ厚さにな
るまでフランジを締付けることが好ましい。
Further, as a fastening method for connecting and fastening the pipes with the flange portions arranged opposite to each other, the flanges are fastened until the gap between the facing flanges becomes the same thickness as the thin portion of the gasket according to claim 1. Is preferred.

【0013】[0013]

【作用】上記のように構成した本発明のフランジ用ゴム
ガスケットは、ゴムガスケットのシート面をフランジボ
ルト穴の内側とすることによってフランジボルト締付け
時の面圧が非常に大きく確保されシートリークを防止す
ることができる。これはシート面が縮少したこと及びフ
ランジボルトの締付けによるモーメント荷重の効果によ
るものである。
With the rubber gasket for a flange of the present invention constructed as described above, the seat surface of the rubber gasket is located inside the flange bolt hole, so that a very large surface pressure is secured when the flange bolt is tightened, and seat leakage is prevented. can do. This is due to the contraction of the seat surface and the effect of the moment load due to the tightening of the flange bolts.

【0014】またガスケットのセッティングは該ガスケ
ットの外周に穿設した複数個のセッティング穴があるの
で該穴中に締付用ボルトを挿通させることにより従来通
り容易にできる。
Since there are a plurality of setting holes formed on the outer circumference of the gasket, the gasket can be easily set as usual by inserting a tightening bolt into the hole.

【0015】そのうえボルトの締付管理はシート面より
半径方向外側の薄肉部と同じ厚さになるまで締付ければ
良いので外観から確認しながら作業ができる。
In addition, tightening control of the bolts can be performed until the thickness is the same as the thin portion on the outer side in the radial direction from the seat surface.

【0016】[0016]

【実施例】以下図面により本発明の実施例について説明
する。図1は本発明の一実施例に係るフランジ用ゴムガ
スケットを示し、(a)は側断面図、(b)は(a)の
X−X矢視正面図である。
Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show a rubber gasket for a flange according to an embodiment of the present invention, wherein FIG. 1A is a side sectional view and FIG. 1B is a front view taken along the line XX of FIG.

【0017】図において、P,Pは例えば本発明を適用
する接続される海水配管、F,Fは該管接続部に設けた
フランジを示し、ゴムガスケット1は対向配置された前
記フランジF,F間の隙間部に介装される。
In the drawings, P and P are seawater pipes to which the present invention is applied, for example, F and F are flanges provided at the pipe connection portion, and a rubber gasket 1 is the above-mentioned flanges F and F arranged oppositely. It is inserted in the space between them.

【0018】ゴムガスケット1のシート面2は各フラン
ジFに設けられたボルト穴より内側にあるように構成さ
れると共に、ゴムガスケット1の外周付近には円周方向
に亘って複数個所にセッティング用の穴3が穿設されて
いる。
The seat surface 2 of the rubber gasket 1 is constructed so as to be inside the bolt holes provided in each flange F, and the rubber gasket 1 is set at a plurality of positions in the circumferential direction in the vicinity of the outer circumference of the rubber gasket 1. The hole 3 is formed.

【0019】前記セッティング用の穴3のある部位のガ
スケット厚さtは、ゴムガスケットシート面の厚さTよ
り薄肉に構成している。
The gasket thickness t of the portion having the setting hole 3 is thinner than the thickness T of the rubber gasket sheet surface.

【0020】そしてシート面厚さTを必要な締付荷重に
なるまでボルトにより締付けた時、シート面が形成する
厚さは、セッティング用穴3のある部位の薄肉のガスケ
ット厚さtと同じ厚さになるように構成されている。
When the seat surface thickness T is tightened with bolts until the necessary tightening load is reached, the thickness formed by the seat surface is the same as the thin gasket thickness t at the portion having the setting hole 3. It is configured to be

【0021】以上本発明の一実施例について説明した
が、本発明は上記実施例に限定されるものでなく本発明
技術思想の範囲内において設計変更が可能であり、それ
らは何れも本発明の技術的範囲に属する。
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and design changes can be made within the scope of the technical idea of the present invention, and any of them can be applied to the present invention. Belong to the technical scope.

【0022】[0022]

【発明の効果】本発明のフランジ用ゴムガスケットによ
れば接続する配管のフランジ部に介装したゴムガスケッ
トの締付け時のシート面よりのリークは防止されるので
信頼性が向上するとともにガスケットのセッティングも
従来通り確保され、品質管理も外観によって確認できる
ので作業性、作業の品質管理も向上する。
EFFECTS OF THE INVENTION According to the rubber gasket for a flange of the present invention, leakage from the seat surface at the time of tightening the rubber gasket interposed in the flange portion of the pipe to be connected is prevented, so that the reliability is improved and the gasket is set. Is maintained as before, and quality control can be confirmed by the appearance, which improves workability and work quality control.

【0023】また、外観により締め付け量を確認できる
ので、例えば締め付けの際にトルクレンチ等が不必要に
なり、作業効率、信頼性が向上する。
Further, since the tightening amount can be confirmed by the external appearance, for example, a torque wrench is not required at the time of tightening, and work efficiency and reliability are improved.

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

【図1】本発明の一実施例に係るガスケットを示し、
(a)は側断面図、(b)は(a)のX−X矢視正面図
である。
FIG. 1 shows a gasket according to an embodiment of the present invention,
(A) is a side sectional view and (b) is a front view taken along line XX of (a).

【図2】従来のガスケットの一例を示し、(a)は側断
面図、(b)は(a)のX−X矢視正面図である。
2A and 2B show an example of a conventional gasket, FIG. 2A is a side sectional view, and FIG. 2B is a front view taken along arrow XX of FIG.

【図3】従来のガスケットの別例を示し、(a)は側断
面図、(b)は(a)のX−X矢視正面図である。
3A and 3B show another example of a conventional gasket, FIG. 3A is a side sectional view, and FIG. 3B is a front view taken along line XX of FIG.

【符号の説明】[Explanation of symbols]

1 ゴムガスケット 2 シート面 3 セッティング用穴 P 配管 F フランジ T シート面厚さ t フランジボルト穴部位のガスケット厚さ 1 Rubber gasket 2 Seat surface 3 Setting hole P Piping F Flange T Seat surface thickness t Flange bolt hole gasket thickness

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 外周に円周方向に亘り複数個所セッティ
ング用穴を穿設したフランジ用ゴムガスケットにおい
て、該ガスケットのシート面をフランジボルト穴より内
側とするとともに、シート面より半径方向外側のガスケ
ット厚さをガスケットを必要な締付荷重になるまで締付
けた時シート面が形成する厚さと同じ厚さになるよう薄
肉化したことを特徴とするフランジ用ゴムガスケット。
1. A rubber gasket for a flange, wherein a plurality of setting holes are formed on the outer circumference in the circumferential direction. The gasket has a seat surface on the inside of the flange bolt hole and an outer side of the seat surface in the radial direction. A rubber gasket for flanges, characterized in that the thickness is reduced to the same thickness as the sheet surface when the gasket is tightened to the required tightening load.
【請求項2】 配管を、対向配置したフランジ部で接続
締着する締付方法において、対向するフランジの隙間が
請求項1記載のガスケットの薄肉部と同じ厚さになるま
でフランジを締付けることを特徴とするフランジ用ゴム
ガスケットの締付方法。
2. A tightening method for connecting and tightening pipes with flange portions arranged opposite to each other, wherein the flanges are tightened until the gap between the facing flanges has the same thickness as the thin portion of the gasket according to claim 1. The characteristic method for tightening rubber gaskets for flanges.
JP7131141A 1995-05-02 1995-05-02 Rubber gasket for flange and tightening method therefor Withdrawn JPH08303597A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7131141A JPH08303597A (en) 1995-05-02 1995-05-02 Rubber gasket for flange and tightening method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7131141A JPH08303597A (en) 1995-05-02 1995-05-02 Rubber gasket for flange and tightening method therefor

Publications (1)

Publication Number Publication Date
JPH08303597A true JPH08303597A (en) 1996-11-19

Family

ID=15050962

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7131141A Withdrawn JPH08303597A (en) 1995-05-02 1995-05-02 Rubber gasket for flange and tightening method therefor

Country Status (1)

Country Link
JP (1) JPH08303597A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013245380A (en) * 2012-05-28 2013-12-09 Hitachi Ltd Corrosion inhibition apparatus and seawater desalination plant with the same, and pump device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013245380A (en) * 2012-05-28 2013-12-09 Hitachi Ltd Corrosion inhibition apparatus and seawater desalination plant with the same, and pump device

Similar Documents

Publication Publication Date Title
US20110266797A1 (en) Seal Ring And Joint
JPH07269719A (en) Valve with seal ring with periphery-welded laminate
US3850455A (en) Strain-limiting connector
US4175754A (en) Seal for fluid ducts
US6168166B1 (en) Metal gasket with two half beads
JPH08303597A (en) Rubber gasket for flange and tightening method therefor
JP2008128297A (en) Clamp for flange type pipe joint
JP2007232133A (en) Spiral gasket
JP2544698B2 (en) Pipe fittings
JPH08247291A (en) Lens ring gasket
CN210800425U (en) Pressure reducing valve applied to curved pipeline
JP2008002512A (en) Fastening member for valve and butterfly valve using it
JP2007113644A (en) Disengagement prevention structure of pipe joint and disengagement prevention enhancement method of pipe joint
CN211550549U (en) Take water force control valves of flexible function of taking precautions against earthquakes
CN212107359U (en) Sealing rubber ring for water pipe connection
JP6242681B2 (en) Leakage repair device and method of mounting the leak repair device
CN220152114U (en) Flange sealing assembly
JP4149036B2 (en) Pipe flange leakage repair mechanism
JP2917099B2 (en) Pipe joint outer surface sealing device
CN213394130U (en) Slag water pipeline online leakage eliminating device
CN210600555U (en) Flange convenient for connecting heat supply pipeline
KR200164755Y1 (en) Spiral wound gasket
CN209977240U (en) Combined sealing gasket
KR200188897Y1 (en) Welding joint type butterfly valve
JP2004316737A (en) Wafer type orifice trap

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20020702