JPS62177371A - Valve - Google Patents
ValveInfo
- Publication number
- JPS62177371A JPS62177371A JP1815386A JP1815386A JPS62177371A JP S62177371 A JPS62177371 A JP S62177371A JP 1815386 A JP1815386 A JP 1815386A JP 1815386 A JP1815386 A JP 1815386A JP S62177371 A JPS62177371 A JP S62177371A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- carbon
- seat
- valve body
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 8
- 239000004917 carbon fiber Substances 0.000 claims abstract description 8
- 229910001347 Stellite Inorganic materials 0.000 abstract description 5
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 2
- 229910000816 inconels 718 Inorganic materials 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は耐焼付摩耗性にすぐれた弁、特に原子力原発プ
ラント用の弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a valve with excellent seizure and wear resistance, particularly to a valve for use in a nuclear power plant.
従来から化学、原子カプラントなど各種プラント分野で
用いる弁の弁箱および弁体の弁座には、れている。Conventionally, they have been used in valve bodies and valve seats of valves used in various plant fields such as chemical and atomic couplants.
しかしながら、最近では、Ｃｏ資源の枯渇、化学プラン
トにあってはその反応制御、原子カプラントにあっては
そのコバルト６０の蓄積に対する安全性向上の観点から
、上記ステライトに代えてＮｉあるいはＦｅを基体とし
た耐焼付摩耗合金を弁箱の弁座および／また体弁体の弁
座に使用した弁が開発されている。However, recently, from the viewpoint of depletion of Co resources, reaction control in chemical plants, and safety improvement against the accumulation of cobalt-60 in atomic couplants, Ni or Fe has been used as a substrate instead of the above-mentioned stellite. A valve has been developed in which a seizing and wear-resistant alloy is used for the valve seat of the valve body and/or the valve seat of the valve body.
しかし従来から妬られているＮｉあるいはＦｅ基体の合
金は、ＣＯ基体のステライトに比べて摩擦係数が大きく
耐焼付摩耗性の点で充分な特性を備えるものではなく、
特に仕切り弁としてその特性を十分備えるものではなか
った。However, the Ni- or Fe-based alloys, which have traditionally been envied, have a larger coefficient of friction than the CO-based stellite, and do not have sufficient properties in terms of seizure and wear resistance.
In particular, it did not have sufficient characteristics as a gate valve.
本発明は、上記した問題点を解消するためになされたも
ので、各種プラント特に原子力発電プラントにおいてコ
バルト粒子またはコバルトイオンの放出が実質的に皆無
であり、かつ、耐焼付摩耗性に優れた弁を提供すること
を目的とするものである。The present invention has been made to solve the above-mentioned problems, and is a valve that releases virtually no cobalt particles or cobalt ions and has excellent seizure and wear resistance in various plants, especially nuclear power plants. The purpose is to provide the following.
本発明の弁は、弁箱あるいは弁体の少なくともどちらか
一方の弁座が炭素繊維で複合強化された炭素で構成され
た事を特徴とする弁、および上述した構成より成ること
を特徴とした仕切り弁、特に原子力発電プラント用の弁
である。The valve of the present invention is characterized in that the valve seat of at least one of the valve body and the valve body is made of carbon compositely reinforced with carbon fiber, and the valve has the above-mentioned structure. Gate valves, especially valves for nuclear power plants.
ここで本発明に係る弁の構成の限定理由について説明す
る。Here, the reasons for limiting the structure of the valve according to the present invention will be explained.
弁箱あるいは弁体の少なくともどちらか一方の弁座を炭
素、１、哉維で複合強化した炭素とした理由は従来の弁
座材であるコバルト基合金の通称ステライトと呼ばれる
材料を原子カプラント用弁の弁座に使用した場合には摩
耗や腐食による生成物が炉水とともに原子炉内にもちき
たされ、これが中性子の照射により半減期が約５．５年
のコバルト６０となってプラントの放射線量率を上昇さ
せ、ひいてはプラントの保守点検や補修に要する時間を
長びかせる不都合を生ずるためである。The reason why the valve seat of at least either the valve body or the valve body is made of carbon reinforced with carbon fibers is that the conventional valve seat material, a cobalt-based alloy commonly known as stellite, is used for atomic couplant valves. When used on valve seats, products from wear and corrosion are brought into the reactor along with reactor water, and when irradiated with neutrons, this becomes cobalt-60, which has a half-life of about 5.5 years, reducing the radiation level in the plant. This is because it causes an inconvenience in that the rate increases and the time required for maintenance inspection and repair of the plant increases.
また一般の金属材料を弁座とした場合（（は摩擦係数が
大きく、弁座どうしの摺動摩擦で焼付を生じて摩耗量が
大きいばかりでなく、特に仕切り弁では深いキズを生じ
てもれを生ずる。さらに焼付に上り弁の開閉が困難にな
ったりする。しかし、本発明に係る弁のように弁箱ある
いは弁体のどちらか少々くとも一方を炭素繊維で複合強
化した炭素とした場合には、水中における摩擦係数が金
属材料に比較して遥かに小さく焼付きを生じないことに
よる。なお単なる炭素のみの焼結体では強度が不十分で
あることによる。更に弁座表面に溝を設は耐焼付性を向
上させることも可能である。In addition, when a valve seat is made of a general metal material (() has a large coefficient of friction, the sliding friction between the valve seats causes seizure, which not only causes a large amount of wear, but also causes deep scratches and leakage, especially in gate valves. Furthermore, seizing may occur, making it difficult to open and close the valve.However, when at least one of the valve body or the valve body is made of carbon compositely reinforced with carbon fibers, as in the valve according to the present invention, This is because the coefficient of friction in water is much smaller than that of metal materials, and seizure does not occur.However, a sintered body made only of carbon does not have sufficient strength.Furthermore, grooves are provided on the surface of the valve seat. It is also possible to improve seizure resistance.
第１表に示すような市販のステライト＃６．インコネル
７１８，５ＵＳ６３０．コルモノイ＃５．炭化硅素焼結
体および炭素繊維で複合強化した炭素をそれぞれ用意し
、それぞれを組合せて水中における摩擦係数を測定した
。その結果を第１表に併せて示した。Commercially available Stellite #6 as shown in Table 1. Inconel 718,5US630. Kormonoi #5. A silicon carbide sintered body and carbon composite reinforced with carbon fibers were prepared, and the coefficient of friction in water was measured by combining them. The results are also shown in Table 1.
なお特性評価方法は第１図に示したように弁箱の弁座に
相当する掌擦相手板１．に弁体の弁座に相当する圧子２
を荷重Ｗで押しつけ摩擦相手板１が静止状態から動状態
になる時の力を測定して、その値から摩擦係数を算出し
た。なお測定雰囲気は室温水中で荷重は１０＃である０
第 １ 表
また、上記実施例３の組合せを弁箱および弁体の弁座に
適用した呼び経 １００ミリの仕切り弁を製作し、面圧
２＃／−の負荷状態で １００回の開閉動作をくりかえ
したが弁座の焼付はなく良好な状態であった。なお弁体
の弁座のとりつげはシートリング方法で行ない、炭素繊
維で強化した炭素に金鳴板をろう付し内径側および外径
側に金属のリングをはめ込み金属板と溶接後、弁体に溶
接した。The characteristics evaluation method is as shown in Fig. 1, using a palm-rubbing mating plate 1, which corresponds to the valve seat of the valve box. Indenter 2 corresponding to the valve seat of the valve body
was pressed with a load W to measure the force when the friction mating plate 1 changes from a stationary state to a moving state, and the friction coefficient was calculated from that value. The measurement atmosphere was water at room temperature and the load was 10mm. Opening and closing operations were repeated 100 times under a load of 2#/-, but the valve seat was in good condition with no seizure. The valve seat of the valve body is attached using the seat ring method. A metal plate is brazed to carbon reinforced with carbon fiber, metal rings are fitted on the inner and outer diameter sides, and after welding to the metal plate, the valve body is attached. Welded to.
第１表より明らかなように本発明に係る弁は、弁座の摩
擦係数が小さいことから焼付による深い摩耗キズを生ず
ることなく、また焼付により弁の開閉が困、誰になるこ
ともない、優れた弁であり、さらにコバルトを含んでい
ないことから原子力発電プラントの弁として工業上有用
であると言える。As is clear from Table 1, the valve according to the present invention has a small friction coefficient on the valve seat, so it does not cause deep wear scratches due to seizure, and it also prevents anyone from having trouble opening and closing the valve due to seizure. It is an excellent valve, and since it does not contain cobalt, it can be said to be industrially useful as a valve for nuclear power plants.
ｉｔ図は特性評価法を示す概略図。 代理人 弁理士 則 近 憲 佑 同 竹 花 喜久男 The it diagram is a schematic diagram showing the characteristic evaluation method. Agent: Patent Attorney Noriyuki Chika Same Bamboo Flower Kikuo
Claims (3)
座が炭素繊維で複合強化された炭素で構成されて成るこ
とを特徴とする弁。(1) A valve characterized in that the valve seat of at least one of the valve body and the valve body is made of carbon compositely reinforced with carbon fibers.
第１項記載の弁。(2) The valve according to claim 1, which is a gate valve.
特許請求の範囲第１項および第２項記載の弁。(3) The valve according to claims 1 and 2, which is a valve for a nuclear power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1815386A JPS62177371A (en) | 1986-01-31 | 1986-01-31 | Valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1815386A JPS62177371A (en) | 1986-01-31 | 1986-01-31 | Valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62177371A true JPS62177371A (en) | 1987-08-04 |
Family
ID=11963666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1815386A Pending JPS62177371A (en) | 1986-01-31 | 1986-01-31 | Valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62177371A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004041853A1 (en) * | 2004-04-27 | 2005-11-17 | Von Ardenne Anlagentechnik Gmbh | Valve for the vapor-tight decoupling of two connected process units |
| WO2014099294A1 (en) * | 2012-12-20 | 2014-06-26 | Ge-Hitachi Nuclear Energy Americas Llc | Control rod drive apparatus utilizing alloys with low to zero cobalt content |
-
1986
- 1986-01-31 JP JP1815386A patent/JPS62177371A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004041853A1 (en) * | 2004-04-27 | 2005-11-17 | Von Ardenne Anlagentechnik Gmbh | Valve for the vapor-tight decoupling of two connected process units |
| DE102004041853B4 (en) * | 2004-04-27 | 2008-01-31 | Von Ardenne Anlagentechnik Gmbh | Valve for the vapor-tight decoupling of two connected process units |
| DE102004041853B8 (en) * | 2004-04-27 | 2008-07-10 | Von Ardenne Anlagentechnik Gmbh | Valve for the vapor-tight decoupling of two interconnected process units |
| WO2014099294A1 (en) * | 2012-12-20 | 2014-06-26 | Ge-Hitachi Nuclear Energy Americas Llc | Control rod drive apparatus utilizing alloys with low to zero cobalt content |
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