JPS6044844A - Leakage detecting apparatus - Google Patents

Leakage detecting apparatus

Info

Publication number
JPS6044844A
JPS6044844A JP15385983A JP15385983A JPS6044844A JP S6044844 A JPS6044844 A JP S6044844A JP 15385983 A JP15385983 A JP 15385983A JP 15385983 A JP15385983 A JP 15385983A JP S6044844 A JPS6044844 A JP S6044844A
Authority
JP
Japan
Prior art keywords
leakage
closed space
tightly closed
pressure
compressing member
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
Application number
JP15385983A
Other languages
Japanese (ja)
Inventor
Osamu Shinozuka
篠塚　修
Hiroyasu Kato
加藤　弘安
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.)
Toshiba Engineering Corp
Toshiba Corp
Original Assignee
Toshiba Engineering Corp
Toshiba 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 Toshiba Engineering Corp, Toshiba Corp filed Critical Toshiba Engineering Corp
Priority to JP15385983A priority Critical patent/JPS6044844A/en
Publication of JPS6044844A publication Critical patent/JPS6044844A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

PURPOSE:To ensure the judgment of the soundness of a sealing member, by forming a tightly closed space at the outside of junction surfaces and mechanically detecting the leakage into the tightly closed space. CONSTITUTION:An apparatus detects the leakage of a junction part, which is formed from a pump casing 1 of a pump and a flange part 7 of a casing cover 4. A compressing member 13 forms a tightly closed space 12, which surrounds a part between junction surfaces 1a and 7a on the outside of a canopy seal. A leakage detector 14 detects the leakage from the junctions surfaces to the inside of the tightly closed space 12. Said apparatus is constituted of the compressing member 13 and the leakage detector 14. The compressing member 13 is composed of a main body 16 of an annular member and O rings 17 and 18 forming the tightly closed space 12. In the compressing member 13, a communicating pipe 29, whose one end is opened in the tightly closed space 12 through the main body 16 of the member, is provided. The other end of the comminicating pipe 19 is connected to a pressure gage as the leakage detector 14. When there is no deterioration in a gasket 10, which is a sealing member, it is judged that there is no leakage. Therefore there is no pressure fluctuation. When the deterioration occurs, cooling agent leaks into the tightly closed space 12, and the pressure in the tightly closed space 12 is increased.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はシール部材を挾持して密封性を保つようにして
相互に接合された接合部材の接合面間からの漏洩有無を
判断する漏洩検出装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a leakage detection device that determines the presence or absence of leakage from between the joint surfaces of joined members that are joined to each other by sandwiching the sealing member to maintain sealing performance. Regarding.

〔発明の技術的背景〕[Technical background of the invention]

このような漏洩有無の検出を必要とする接合部としては
、例えば原子炉再循環ポンプの耐圧部等がある・ 第１図は原子炉再循環ポンプを示し、？ンゾケーシン／
ｌには流入口コと流出口３とが互いに直交する方向に向
けて形成されており、流入口コと反対側の開口部はケー
シン７カノ々−弘によって閉塞すしている。このケーシ
ン７カノセークには流入口λに向けて回転軸ｊが回転自
在に挿通されており、その回転軸ｊの内方端には冷却材
を圧送するインペラ６が固着されている。そして、ケー
シンｊカッ々−弘には外周にフランジ部７が形成されて
おり、そのフランジ部７を一ンプケーシンｌｒ／とモー
タ台ｒとで挾持いこれらのポンゾケーシン／ｌとモータ
台♂とを多数のスタッドボルトおよびナツトからなる緊
締具りにより緊締固着してい更にポンプケーシン／ｌと
ケーシン７カノ々−≠との接合部からの高圧冷却材の漏
洩を防止するために、第２図に示すようなシール装置が
設けられている。Examples of joints that require such leakage detection include the pressure-resistant parts of nuclear reactor recirculation pumps. Figure 1 shows a nuclear reactor recirculation pump. Nzokesin/
An inlet port and an outlet port 3 are formed in directions perpendicular to each other, and the opening on the opposite side from the inlet port is closed by a casing 7. A rotary shaft j is rotatably inserted into the casing 7 facing the inlet λ, and an impeller 6 for pumping the coolant is fixed to the inner end of the rotary shaft j. A flange portion 7 is formed on the outer periphery of the casing J, and the flange portion 7 is held between a pump casing lr/ and a motor stand r, and these ponzo casings lr and motor stand ♂ are connected to each other. In order to prevent leakage of high-pressure coolant from the joint between the pump casing/l and the casing 7 holes, as shown in Fig. 2, A sealing device is provided.

すなわち、ポンプケーシン／ｌの接合面／ａとフランジ
部７の接合面７ａとの間に７次シール部材としてガスケ
ット１０が介挿され、更に、フランジ部７の外周面から
２次シール片としてキャノピシール／、／がポンプケー
シン／ｌに向けて突設されている。そして、ガスケット
１０が経年劣化して、ガスケット１０を越えてポンプケ
ーシン／ｌとフランジ部７との接合面間から冷却材が漏
洩すると、キャノピシールｌ／とポンゾケーシン／ｌの
接合面／ａとを全周溶接して漏洩を防止している。That is, a gasket 10 is inserted as a seventh seal member between the joint surface /a of the pump casing /l and the joint surface 7a of the flange portion 7, and a canopy is further inserted as a secondary seal member from the outer peripheral surface of the flange portion 7. Seals /, / are provided to protrude toward the pump casing /l. When the gasket 10 deteriorates over time and coolant leaks beyond the gasket 10 from between the joint surface of the pump casing /l and the flange portion 7, the joint surface /a of the canopy seal /l and the ponzo casing /l leaks. Welded all around to prevent leakage.

〔背景技術の問題点〕[Problems with background technology]

両接合面／ａ、７ａの間からの漏洩の検出は、原子力発
電所の定期検査時等の原子炉圧力容器耐圧試験時に、目
視により両接合面間からの冷却材の漏洩有無を見て判断
していた。この目視による場合にはガスケットＩＯの劣
化による漏洩なのか、初めからキャノピシール／ｌの部
分に溜まっていた水なのかが判断することが困難であっ
た。Detection of leakage from between both joint surfaces /a and 7a is determined by visually checking whether or not coolant is leaking from between both joint surfaces during a reactor pressure vessel pressure test such as during regular inspections of nuclear power plants. Was. In this visual inspection, it was difficult to determine whether the leak was due to deterioration of the gasket IO or whether it was water that had accumulated in the canopy seal/l from the beginning.

また、一旦ガスケットＩＯの劣化による漏洩であると判
断し、キャノピシールの溶接を行なった場合には、次回
の定期検査時においてガスヶ、ット１０の交換のために
キャノピシールｌ／を切断したり、新旧のガスケットの
取出し、装着等の作業が複雑で長時間を要する等の不都
合があった。In addition, once it is determined that the leak is due to deterioration of the gasket IO and the canopy seal is welded, the canopy seal 10 may be cut or removed in order to replace the gasket 10 at the next periodic inspection. However, the process of removing and installing old and new gaskets is complicated and takes a long time.

〔発明の目的〕[Purpose of the invention]

本発明はこれらの点に鑑みてなされたものであり、接合
面間の漏洩の有無を目視によることなく、機械的に確実
に判断することのできる漏洩検出装置を提供することを
目的とする。The present invention has been made in view of these points, and it is an object of the present invention to provide a leakage detection device that can mechanically and reliably determine the presence or absence of leakage between joint surfaces without visual inspection.

〔発明の概要） 本発明は、密封性保持用のシール部材を挾持して相互に
接合されたｌ対の接合部材の接合面間からの漏洩有無を
検出する漏洩検出装置において、前記各接合部材に密着
させられて前記接合面の外側を囲む密閉空間を形成する
抑圧部材を設け、この密閉空間内への接合面間からの漏
洩を検出する漏洩検知器を設けて形成し、漏洩の有無を
機械的に確実に判断することを特徴とする。[Summary of the Invention] The present invention provides a leakage detection device for detecting the presence or absence of leakage between the joint surfaces of l pairs of joining members joined together by sandwiching a sealing member for maintaining hermeticity. A suppression member is provided which is brought into close contact with the joint surface to form a sealed space surrounding the outside of the joint surface, and a leak detector is provided to detect leakage from between the joint surfaces into this closed space to detect the presence or absence of leakage. It is characterized by reliable mechanical judgment.

〔発明の実施例〕[Embodiments of the invention]

以下、第３図に示す本発明の実施例について説明する。 The embodiment of the present invention shown in FIG. 3 will be described below.

本実施例は、原子炉再循環ポンプのポンプケーシン／／
Ｊ−ケーシンｊカッ々−≠のフランジ部７とで形成され
た接合部の漏洩を検出するものである。This example is a pump casing of a nuclear reactor recirculation pump.
This is to detect leakage at the joint formed between the flange portion 7 of the J-casing and the flange portion 7 of the casing.

第２図と同一部分には同一符号を付しである。The same parts as in FIG. 2 are given the same reference numerals.

本実施例の装置は、キャノピシールの外側に両接合面／
ａと７ａとの間を囲む密閉空間／、２を形成する抑圧部
材／３と、この密閉空間ｌコ内への接合面間からの漏洩
を検知する漏洩検知器／ｌとで形成されている。The device of this example has both joint surfaces/
It is formed by a suppressing member /3 forming a closed space /, 2 surrounding between a and 7a, and a leak detector /1 for detecting leakage from between the joint surfaces into this closed space /1. .

更に説明すると、抑圧部材／３は、円周方向に複数に分
割されておりポルトｉｓ、ｌｓ等の連結部材によって相
互に連結されて現状に形成される部材本体／Ａと、この
部材本体／６の内周面に形成された凹溝内に装着されて
ポンプケーシン／／の接合面ｌａとフランジ部７０外聞
面ＩＣ密着してｔ！ｆ閉空閉空間管形成するＯリン／１
７、／ｌとで構成されている。To explain further, the suppressing member /3 is divided into a plurality of parts in the circumferential direction and is connected to each other by connecting members such as ports IS and Is to form a member main body /A, and this member main body /6 The joint surface la of the pump casing // and the outer surface IC of the flange portion 70 are in close contact with each other. f O-phosphorus forming a closed air closed space tube/1
7, /l.

この○リン／／１．７ｇはそれぞれ周方向／ケ所で切断
されている。また、抑圧部材１３には部材本体／６を貫
通して密閉空間／コ内に一端が開口している連通管／９
が設けられており、この連通管／９の他端には漏洩検知
器ｌｌＩとして圧力計が接続されている。This ○ phosphorus //1.7g is each cut at several places in the circumferential direction. In addition, the suppression member 13 is provided with a communication pipe /9 that penetrates through the member body /6 and has one end opened in the closed space /6.
A pressure gauge is connected to the other end of this communication pipe/9 as a leakage detector III.

次に、本実施例の作用を説明する。Next, the operation of this embodiment will be explained.

漏洩有無の検査は原子炉圧力容器の水圧テスト時に並行
して行なわれる。Inspections for leaks are conducted in parallel with hydraulic pressure tests of the reactor pressure vessel.

先ず、分割状態にある部材本体１６、／６を連結すると
ともに０リン／／７．７ｇを各凹溝内に装着し、環状に
形成された押圧部材１３をボルト／！；、１４の連結部
材を緊締することにより更に縮径させ、各０リン／Ｉｔ
、／ざをそれぞれポンプケーシンｊの接合面／ａとフラ
ンジ部７の外周面に弾圧させるとともに切断部をも密着
させる。これにより、キャノピシール／／の外側に両接
合面／ａ、７ａ間を囲む密閉空間／コが形成される。こ
の状態により圧力計／ダにより密閉空間／２内の圧力の
変動を測定する。First, the divided member bodies 16, /6 are connected, and 0 phosphorus //7.7g is installed in each groove, and the annularly formed pressing member 13 is bolted /! ;, by tightening the 14 connecting members, the diameter is further reduced, and each 0 phosphorus/It
, / are pressed against the joint surface /a of the pump casing j and the outer peripheral surface of the flange portion 7, respectively, and the cut portions are also brought into close contact. As a result, a closed space /c surrounding both the joint surfaces /a and 7a is formed on the outside of the canopy seal //. In this state, fluctuations in pressure within the closed space/2 are measured using a pressure gauge/da.

シール部材であるガスケット／θに劣化がなければ漏洩
が無いので圧力変動はなく、劣化が生じそのガスケット
１０を越えて冷却材が密閉空間／２内に漏洩すると密閉
空間／、Ｚ内の圧力が上昇し、漏洩ちっとして検出され
る。If the gasket /θ, which is a sealing member, does not deteriorate, there will be no leakage, so there will be no pressure fluctuation, but if deterioration occurs and the coolant leaks beyond the gasket 10 into the closed space /2, the pressure inside the closed space /, Z will increase. It rises and is detected as a leak.

漏洩有無の検査後には、各部材本体１６．１６を分解す
ることにより抑圧部材／、？を取外す。After inspecting for leakage, each member main body 16.16 is disassembled to suppress the suppression member/? Remove.

また、抑圧部材１３を常時取付けておいて、漏洩有無の
検査を継続的に行なりこともできる。Furthermore, it is also possible to keep the suppressing member 13 attached at all times and to continuously test for the presence or absence of leakage.

〔発明の効果〕〔Effect of the invention〕

本発明の漏洩検出装置はこのように構成され、作用する
ものであるから１．接合面間からの漏洩有無を機械的に
、簡単かつ確実に検出することができ、これによりシー
ル部材の健全性を確実に判断することができ、例えば原
子炉再循環ポンプの接合部に適用すれば原子力発電設備
全体の安全性をも向上させることができる等の効果を奏
する。The leakage detection device of the present invention is configured and operates as described above; therefore, 1. It is possible to mechanically, easily and reliably detect the presence or absence of leakage between joint surfaces, and this allows the soundness of sealing members to be reliably determined. In other words, the safety of the entire nuclear power generation facility can be improved.

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

第１図は原子炉再循環ポンプの縦断側面図、第２図は第
１図の１部拡大図、第３図は本発明の漏洩検出装置の一
実施例を示し、第２図に示すシール部に適用した例を示
す縦断側面図である。 ／・・・ポンプケーシン／（接合部桐）、７・・・フラ
ンジ部（接合部材）、／ａ、７ａ・・・接合面、１０・
・・ガスケット（シール部材）、／コ・・・密閉空間、
／３・・・抑圧部材、／ｌｌ・・・漏洩検知器。 出願人代理人　猪　股　消 色　１　囚 へ ５２図 ρ ５３　図Fig. 1 is a longitudinal side view of a reactor recirculation pump, Fig. 2 is a partially enlarged view of Fig. 1, and Fig. 3 shows an embodiment of the leakage detection device of the present invention. FIG. /...Pump casing/(joint paulownia), 7...flange part (joint member), /a, 7a...joint surface, 10.
・・Gasket (sealing member), /ko・・closed space,
/3... Suppression member, /ll... Leak detector. Applicant's agent Boar Crotch Discoloration 1 To prisoner 52 figure ρ 53 figure

Claims (1)

【特許請求の範囲】 １、密封性保持用のシール部材を挾持して相互に接合さ
れたｌ対の接合部材の接合面間からの漏洩有無を検出す
る漏洩検出装置において、前記各接合部材に密着させら
れて前記接合面の外側を囲む密閉空間を形成する押圧部
材を設け、この密閉空間内への接合面間からの漏洩を検
出する漏洩検知器を設けたことを特徴とする漏洩検出装
置。 コ、漏洩検知器として、密閉空間内の圧力を測定して漏
洩有無を検知する圧力計を設けたことを特徴とする特許
請求の範囲第１項記載の漏洩検出装置。[Scope of Claims] 1. In a leakage detection device for detecting the presence or absence of leakage between the joint surfaces of l pairs of joining members joined together while sandwiching a sealing member for maintaining hermeticity, each of said joining members A leakage detection device comprising a pressing member that is brought into close contact to form a sealed space surrounding the outside of the joint surface, and a leak detector that detects leakage into the sealed space from between the joint surfaces. . (h) The leak detection device according to claim 1, further comprising a pressure gauge as the leak detector, which measures the pressure in the closed space to detect the presence or absence of a leak.
JP15385983A 1983-08-23 1983-08-23 Leakage detecting apparatus Pending JPS6044844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15385983A JPS6044844A (en) 1983-08-23 1983-08-23 Leakage detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15385983A JPS6044844A (en) 1983-08-23 1983-08-23 Leakage detecting apparatus

Publications (1)

Publication Number Publication Date
JPS6044844A true JPS6044844A (en) 1985-03-11

Family

ID=15571660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15385983A Pending JPS6044844A (en) 1983-08-23 1983-08-23 Leakage detecting apparatus

Country Status (1)

Country Link
JP (1) JPS6044844A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS648833U (en) * 1987-02-20 1989-01-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS648833U (en) * 1987-02-20 1989-01-18

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