JPH0532701Y2 - - Google Patents
Info
- Publication number
- JPH0532701Y2 JPH0532701Y2 JP16994786U JP16994786U JPH0532701Y2 JP H0532701 Y2 JPH0532701 Y2 JP H0532701Y2 JP 16994786 U JP16994786 U JP 16994786U JP 16994786 U JP16994786 U JP 16994786U JP H0532701 Y2 JPH0532701 Y2 JP H0532701Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- bonding layer
- peripheral edge
- insert fitting
- insert
- 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 - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000005219 brazing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 229910000833 kovar Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- -1 sialon Chemical compound 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、流体の流路を開閉するボールバルブ
の弁体とインサート金具との接合構造に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a joining structure between a valve body and an insert fitting of a ball valve that opens and closes a fluid flow path.
（従来の技術）
ボールバルブの一般的な構造は、弁筐内に設け
た弁体にステム棒を連結し、このステム棒をハン
ドル或いはアクチユエータにて回転させることで
弁体を回転させ、流路の開閉を行うようにしてい
る。(Prior Art) The general structure of a ball valve is that a stem rod is connected to a valve body provided in a valve casing, and the stem rod is rotated by a handle or an actuator to rotate the valve body and open a flow path. I am trying to open and close the door.
ところで、弁体を構成する材料として最近では
耐摩耗性及び耐熱性に優れたセラミツクスを用い
たものがある。斯かるセラミツクス製弁体をステ
ム棒にて回転せしめるには、弁体に凹部を形成
し、この凹部にステム棒を係合する構造が採用さ
れているが、この構造による凹部のエツジ部がス
テム棒に当り、応力が集中してエツジ部が欠ける
不利がある。 Incidentally, recently there are materials that use ceramics, which have excellent wear resistance and heat resistance, as a material for forming the valve body. In order to rotate such a ceramic valve body with a stem rod, a structure is adopted in which a recess is formed in the valve element and the stem rod is engaged with this recess. There is a disadvantage that when it hits the rod, stress is concentrated and the edge part is chipped.
そこで、セラミツクス製弁体に緩衝部材として
インサート金具を樹脂によつて接合し、このイン
サート金具にステム棒を係合する構造が実願昭59
−197139号等として提案されている。 Therefore, a structure was developed in which an insert fitting was bonded to the ceramic valve body as a buffer member using resin, and a stem rod was engaged with this insert fitting.
- It has been proposed as No. 197139, etc.
しかしながら樹脂は水分に接触したり高温下で
使用すると接着力が低下する不利がある。そこで
第４図に示すようにセラミツクス製弁体２０とイ
ンサート金具２１とをろう材等の耐熱・耐水性の
接合層２２によつて接合することが考えられる。 However, resins have the disadvantage that their adhesive strength decreases when they come into contact with moisture or are used at high temperatures. Therefore, as shown in FIG. 4, it is conceivable to join the ceramic valve body 20 and the metal insert 21 with a heat-resistant and water-resistant bonding layer 22 such as a brazing material.
（考案が解決しようとする問題点）
上述したようにろう材等の耐熱性接合層２２に
て弁体２０とインサート金具２１とを接合した場
合でも、セラミツクス製弁体とインサート金具と
の熱膨張係数の差に原因する応力、或いは弁体を
回転させる際に生じる応力は接合層２２と弁体２
０又はインサート金具２１との周縁接着部ａ，ｂ
に集中し、この周縁接着部ａ，ｂから剥離が生じ
易い。(Problems to be solved by the invention) As described above, even when the valve body 20 and the insert fitting 21 are bonded with the heat-resistant bonding layer 22 such as a brazing material, thermal expansion between the ceramic valve body and the insert fitting The stress caused by the difference in coefficients or the stress generated when rotating the valve body is caused by the stress caused by the difference in coefficients between the bonding layer 22 and the valve body 2.
0 or the peripheral adhesive parts a, b with the insert fitting 21
, and peeling tends to occur from the peripheral adhesive parts a and b.
（問題点を解決するための手段）
上記問題点を解決すべく本考案は、セラミツク
ス製弁体とインサート金具とをろう材等の耐熱製
接合層を介して接合し、且つこの接合層周縁部の
形状を山裾状をなすようにした。(Means for Solving the Problems) In order to solve the above problems, the present invention joins a ceramic valve body and an insert fitting through a heat-resistant bonding layer such as a brazing material, and the peripheral edge of this bonding layer. The shape is shaped like a mountain foot.
（作用）
セラミツクス製弁体とインサート金具とを接合
する接合層の周縁部形状は山裾状をなしているた
め、応力の集中が緩和され剥離が生じにくい。(Function) Since the peripheral edge of the bonding layer that joins the ceramic valve body and the metal insert has a mountain-like shape, stress concentration is relaxed and peeling is less likely to occur.
（実施例）
以下に本考案の実施例を添付図面に基づいて説
明する。(Example) An example of the present invention will be described below based on the accompanying drawings.
第１図は本考案に係る接合構造を適用したボー
ルバルブの縦断面図であり、ボールバルブの弁筐
１は左右の半体１ａ，１ａをボルトによつて結合
してなり、弁筐１内の空間Ｓにはアルミナ、ジル
コニア、フオルステライト等の酸化物系のセラミ
ツクスを焼成してなる弁体２を収納している。 FIG. 1 is a longitudinal cross-sectional view of a ball valve to which the joint structure according to the present invention is applied, and the valve housing 1 of the ball valve is made up of left and right halves 1a, 1a connected by bolts, and the inside of the valve housing 1. A valve body 2 made of sintered oxide-based ceramics such as alumina, zirconia, and forsterite is housed in the space S.
弁体２は略球状をなし、中央部には弁筐１に形
成した流路３と同形の弁孔４が穿設され、弁体２
の上部は截頭状として接合平面２ａを形成し、こ
の接合平面２ａにNi：42％の42アロイ、コバー
ル、チタン或いはステンレス等からなるインサー
ト金具５を耐熱性接合層６を介して接合してい
る。またインサート金具５の中央部には凹溝７が
形成され、この凹溝７にステム棒８が係合し、ス
テム棒８はブツシユ９及びシール部材１０を介し
て弁筐１に回転自在に挿通され、弁筐１から突出
された上端部には手動操作用のハンドル１１又は
アクチユエータが連結される。 The valve body 2 has a substantially spherical shape, and a valve hole 4 having the same shape as the flow path 3 formed in the valve housing 1 is bored in the center part.
The upper part is truncated to form a bonding plane 2a, and an insert metal fitting 5 made of 42% Ni: 42 alloy, Kovar, titanium, stainless steel, etc. is bonded to this bonding plane 2a via a heat-resistant bonding layer 6. There is. Further, a groove 7 is formed in the center of the insert fitting 5, and a stem rod 8 is engaged with this groove 7, and the stem rod 8 is rotatably inserted into the valve housing 1 via a bush 9 and a seal member 10. A handle 11 for manual operation or an actuator is connected to the upper end protruding from the valve housing 1.
一方、前記空間Ｓを形成した弁筐１の内部には
受け部１２を形成し、この受け部にシールリング
１３を介してセラミツクス製バルブシート１４を
嵌め込んでいる。 On the other hand, a receiving portion 12 is formed inside the valve housing 1 that defines the space S, and a ceramic valve seat 14 is fitted into this receiving portion via a seal ring 13.
第２図は弁体２とインサート金具５との接合部
の拡大図であり、弁体２の接合平面２ａ上にはメ
タライズ１５が施され、このメタライズ１５表面
にニツケル層１６が形成され、このニツケル層１
６とインサート金具５表面のニツケル層１７間に
前記耐熱性接合層６が介在している。この耐熱性
接合層６は具体的にはAg，Cu等を含むろう材か
らなり、接合層６の周縁部６ａの形状はインサー
ト金具５の下部周縁部５ａからセラミツクス製弁
体２の接合平面２ａの周縁部２ｂに向つて拡がる
山裾状をなし、且つインサート金具５の下部周縁
部５ａは接合層６内に入り込み、接合層６によつ
てインサート金具５の下部周縁部５ａが覆われて
いる。 FIG. 2 is an enlarged view of the joint between the valve body 2 and the insert fitting 5. A metallization 15 is applied on the joint plane 2a of the valve body 2, and a nickel layer 16 is formed on the surface of this metallization 15. nickel layer 1
The heat-resistant bonding layer 6 is interposed between the nickel layer 17 on the surface of the metal insert 5 and the nickel layer 17 on the surface of the metal insert 5. This heat-resistant bonding layer 6 is specifically made of a brazing material containing Ag, Cu, etc., and the shape of the peripheral edge 6a of the bonding layer 6 extends from the lower peripheral edge 5a of the metal insert 5 to the bonding plane 2a of the ceramic valve body 2. The lower peripheral edge 5a of the metal insert 5 extends into the bonding layer 6, and the lower peripheral edge 5a of the metal insert 5 is covered by the bonding layer 6.
第３図は別実施例を示す第２図と同様の拡大図
であり、この実施例にあつては活性金属法又は酸
化物ソルダー法によつて弁体２とインサート金具
５とを直接接合している。即ち弁体２を構成する
セラミツクスとしては前記した酸化物系セラミツ
クスを用いず、窒化珪素、サイアロン、炭化珪素
等のシリコン系セラミツクスとし，弁体２とイン
サート金具５とを接合する接合層６としては、活
性金属法による場合には、Ti，Zrなどの極めて
活性な金属又は水素化物と、こAg粉末、Cu粉末
の１種又は両者を混合した混合物を塗布後焼成し
たものとし、酸化物ソルダー法による場合はAl2
O3又はCaOを主成分とするソルダー等からなる
ものとする。ただし第３図に示した実施例にあつ
ても、耐熱接合層６の周縁部６ａの形状は山裾状
をなし、インサート金具５の下部周縁部５ａは接
合層６内に入り込み接合層６にて覆われている。 FIG. 3 is an enlarged view similar to FIG. 2 showing another embodiment, in which the valve body 2 and the insert fitting 5 are directly joined by an active metal method or an oxide solder method. ing. That is, the ceramics constituting the valve body 2 are not the above-mentioned oxide ceramics, but silicon-based ceramics such as silicon nitride, sialon, silicon carbide, etc., and the bonding layer 6 for joining the valve body 2 and the metal insert 5 is In the case of the active metal method, a mixture of extremely active metals such as Ti and Zr or hydrides and one or both of Ag powder and Cu powder is applied and fired, and the oxide solder method is used. Al 2 if by
It shall be made of a solder etc. whose main component is O 3 or CaO. However, also in the embodiment shown in FIG. covered.
（考案の効果）
以上に説明した如く本考案によれば、セラミツ
クス製弁体に耐熱製接合層を介してインサート金
具を接合したものにおいて、耐熱製接合層の周縁
部形状を山裾状とし、且つインサート金具の下部
周縁部が接合層にて覆われるようにしたので、高
温下で使用した場合でも、接合部の周縁に応力が
集中するのを緩和でき、インサート金具との弁体
との剥離を防止することができる。(Effects of the invention) As explained above, according to the invention, in a valve body made of ceramics and an insert fitting bonded via a heat-resistant bonding layer, the peripheral edge of the heat-resistant bonding layer is shaped like a mountain foot, and Since the lower peripheral edge of the insert fitting is covered with a bonding layer, even when used at high temperatures, stress concentration on the peripheral edge of the joint can be alleviated, and separation of the insert fitting and the valve body can be prevented. It can be prevented.
第１図は本考案に係る接合構造を適用したボー
ルバルブの縦断面図、第２図は弁体とインサート
金具との接合部の拡大図、第３図は別実施例を示
す第２図と同様の断面図、第４図は従来の接合構
造を示す断面図である。
尚、図面中１は弁筐、２は弁体、２ａは接合平
面、５はインサート金具、５ａはインサート金具
の下部周縁部、６は耐熱製接合層、６ａは接合層
の周縁部である。
Fig. 1 is a vertical sectional view of a ball valve to which the joint structure according to the present invention is applied, Fig. 2 is an enlarged view of the joint between the valve body and the insert fitting, and Fig. 3 is a diagram showing another embodiment. A similar sectional view, FIG. 4, is a sectional view showing a conventional joining structure. In the drawings, 1 is a valve housing, 2 is a valve body, 2a is a joining plane, 5 is an insert fitting, 5a is a lower peripheral edge of the insert fitting, 6 is a heat-resistant joining layer, and 6a is a peripheral edge of the joining layer.
Claims (1)
性接合層を介して接合してなるボールバルブにお
いて、前記接合層の周縁部の形状はインサート金
具の下部周縁部からセラミツクス製弁体の接合面
周縁部に向つて拡がる山裾状をなし、更にインサ
ート金具の下部周縁部は接合層にて覆われている
ことを特徴とするボールバルブにおけるセラミツ
クス製弁体とインサート金具との接合構造。 In a ball valve in which an insert fitting is bonded to a ceramic valve body via a heat-resistant bonding layer, the shape of the peripheral edge of the bonding layer changes from the lower peripheral edge of the insert fitting to the peripheral edge of the joint surface of the ceramic valve body. A bonding structure between a ceramic valve body and an insert fitting in a ball valve, characterized in that the insert fitting has a mountain foot-like shape that expands in the direction, and the lower peripheral edge of the insert fitting is covered with a bonding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16994786U JPH0532701Y2 (en) | 1986-11-05 | 1986-11-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16994786U JPH0532701Y2 (en) | 1986-11-05 | 1986-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6375671U JPS6375671U (en) | 1988-05-20 |
| JPH0532701Y2 true JPH0532701Y2 (en) | 1993-08-20 |
Family
ID=31104219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16994786U Expired - Lifetime JPH0532701Y2 (en) | 1986-11-05 | 1986-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532701Y2 (en) |
-
1986
- 1986-11-05 JP JP16994786U patent/JPH0532701Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6375671U (en) | 1988-05-20 |
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