JPH0425564Y2 - - Google Patents
Info
- Publication number
- JPH0425564Y2 JPH0425564Y2 JP11685286U JP11685286U JPH0425564Y2 JP H0425564 Y2 JPH0425564 Y2 JP H0425564Y2 JP 11685286 U JP11685286 U JP 11685286U JP 11685286 U JP11685286 U JP 11685286U JP H0425564 Y2 JPH0425564 Y2 JP H0425564Y2
- Authority
- JP
- Japan
- Prior art keywords
- ball valve
- hole
- protrusions
- ceramic
- protrusion
- 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
Links
- 239000000919 ceramic Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
Description
（産業上の利用分野）
この考案は、高温、高圧下において用いられる
セラミツク製ボールバルブの改良に関する。
（従来の技術）
従来、高温、高圧下で用いられるボールバルブ
Ａにおいては、耐熱性及び耐圧性に優れたセラミ
ツクが用いられており、そのセラミツク製ボール
バルブの中央部には、ボールバルブ内を流体が流
れるために貫通孔Ｂを設けてあり、この貫通孔Ｂ
の方向を変えるのに回転部が設けられるが、その
回転によつては、セラミツクが破損するおそれが
あり、この部分を破損のおそれがない金属製の係
合部Ｃを接合し、さらにその係合面Ｄには、突部
あるいは突条がＥ線状に配置されて、回転部分と
噛合わされている。
（考案が解決しようとする問題点）
しかしながら、上記従来のセラミツク製ボール
バルブにおいては、高温、高圧下の条件のもとで
使用される場合、セラミツクによるバルブ本体と
金属による係合面との接合部分において、ろう材
の高温における強度向上のため、高温での接合が
要求され、その結果、バルブとの間に残留応力が
増加することとなり、一方、高圧のもとでの使用
では、貫通孔の開口部に設けるシートを介してボ
ールバルブ本体に加わる圧縮荷重が大きくなり、
金属とセラミツクの接合面、又はセラミツクより
なる部分にクラツク等が生じ、破損するという問
題点がある。
その主たる原因は、シートを介してボールバル
ブ本体に加わる圧縮荷重（紙面上下方向）が、第
７図ｂの状態と第７図ｄの状態のときでは、上下
方向の変形量が異なる。第７図ｂの状態のときの
方が変形量が大きく最大である。よつて第７図ｂ
において、紙面左側の突部が線状に貫通孔垂直に
入つている係合部は、紙面右側の係合部（突部が
線状で貫通孔平行）に比べて撓みにくいので紙面
左側の係合部が破損しやすい。かかる理由により
突部の線状を貫通孔と平行に設けるのが望ましい
が、左右を貫通孔と平行に設けると今度はオルダ
ム継手を利用きなくなる。
そこで、この考案は、上記従来セラミツク製ボ
ールバルブにおける欠点を改善するものであり、
オルダム継手を利用して、２ケ以上のボールバル
ブを連結して使用する場合においても、常に安定
した高い強度をもたせようとするものである。
（問題点を解決するための手段）
セラミツクによるボールバルブの中央貫通孔の
貫通方向に直交する両側部に金属の係合部を接合
し、この係合部上に線状に配置する突部もしくは
突条を設け、これらの突部もしくは突条を上記貫
通孔の貫通方向に対して35°〜55°に傾斜して配置
し、さらに係合部の厚さをボールバルブの外径と
貫通孔の内径との差の30％以下としてなるもので
ある。
（作用）
その作用は、仮に貫通孔に対して垂直に荷重が
加わつた時、即ち、セラミツクボールバルブ本体
の最大変形時においても係合部付近で破損しにく
い。よつて、突部に無理なく力が伝えられるの
で、ボールバルブの耐久性を増すことができる。
さらに係合部の厚さをバルブの外径と貫通孔の
内径の30％以下とすることにより、更に、ボール
バルブを支持するシートよりの負荷に対して、耐
久性を著しく向上させるものである。
また、上記両側面に設ける突部あるいは突条の
傾斜方向を互に反対とすることによつても、回転
に対する耐久性を増すものである。
（実施例）
この考案を図に示す実施例により更に説明す
る。１はセラミツクよりなるボールバルブであ
る。このボールバルブ１は、中央のバルブ本体部
２に高温高圧流体を通す貫通孔３を設け、このバ
ルブ１の回転により流体流を断続させる。貫通孔
３の貫通方向に対して直交する両側部には、突部
４を有する超硬合金よりなる係合部５が接合され
ている。そして、この係合部５の突部４は線状に
配置される突部７，７もしくは突条よりなり、上
記貫通孔３の貫通方向に対し突部４は35°〜55°の
角度に傾斜して設けられる。９は係合部５の突部
を形成する係合面である。第２図に示すように前
記突条４は両側部に設けるに当り、それぞれの所
要角度θを反対方向に傾斜して設けることによ
り、ボールバルブ１の回動に対して、より耐久性
を与えることができる。又、この突部４は第３図
および第４図のように構成してもよい。すなわち
第３図で示すように、係合部５の径方向に所要角
度θ傾斜して配設される２個の突部７，７、また
は第４図に示すように、係合部５の径方向一定角
θの範囲で傾斜して設ける突条第４の中央に間隙
６を設けるようにしてもよいものである。実施例
として係合部５の金属を超硬合金とし、本体を
Si3N4よりなるボールバルブにおいて、突部４を
貫通孔３の貫通方向に対し45°としたボールバル
ブA1，A2と上記の傾斜を90°としたボールバルブ
B1，B2（第７図）とを、バルブを支承するシート
に挟持させて上方より荷重を加える破壊荷重試験
を行つたところ表１の結果が得られた。
(Industrial Application Field) This invention relates to an improvement of a ceramic ball valve used under high temperature and high pressure. (Prior art) Ceramic, which has excellent heat resistance and pressure resistance, has been used in ball valve A used under high temperature and high pressure. A through hole B is provided for fluid to flow, and this through hole B
A rotating part is provided to change the direction of the ceramic, but due to its rotation, there is a risk of damaging the ceramic, so this part is joined with a metal engaging part C that is not likely to be damaged, and then the engaging part C is connected. On the mating surface D, protrusions or protrusions are arranged in an E-line shape and mesh with the rotating portion. (Problems to be Solved by the Invention) However, in the conventional ceramic ball valves described above, when used under conditions of high temperature and high pressure, the connection between the ceramic valve body and the metal engagement surface is difficult. In order to improve the strength of the brazing filler metal at high temperatures, high-temperature bonding is required, resulting in an increase in residual stress between the filler metal and the valve.On the other hand, when used under high pressure, through-hole The compressive load applied to the ball valve body through the seat provided at the opening of the ball valve increases,
There is a problem in that cracks or the like occur at the joint surface between metal and ceramic, or at a portion made of ceramic, resulting in damage. The main reason for this is that the compressive load applied to the ball valve body via the seat (in the vertical direction on the paper) results in a different amount of vertical deformation between the state shown in FIG. 7b and the state shown in FIG. 7d. In the state shown in FIG. 7b, the amount of deformation is larger and is at its maximum. Therefore, Figure 7b
In , the engagement part on the left side of the paper whose protrusion is linear and perpendicular to the through hole is less likely to bend than the engagement part on the right side of the paper (the protrusion is linear and parallel to the through hole). Joints are easily damaged. For this reason, it is desirable to provide the linear shape of the protrusion parallel to the through hole, but if the left and right sides are provided parallel to the through hole, the Oldham joint will no longer be used. Therefore, this invention aims to improve the drawbacks of the conventional ceramic ball valves mentioned above.
Even when two or more ball valves are connected using an Oldham joint, the purpose is to always provide stable and high strength. (Means for solving the problem) Metal engaging parts are joined to both sides perpendicular to the penetrating direction of the central through hole of the ceramic ball valve, and protrusions or protrusions are arranged linearly on the engaging parts. Protrusions are provided, and these protrusions or protrusions are arranged at an angle of 35° to 55° with respect to the penetration direction of the through hole, and the thickness of the engaging portion is determined based on the outer diameter of the ball valve and the through hole. 30% or less of the difference from the inner diameter of (Function) The function is that even if a load is applied perpendicularly to the through hole, that is, even if the ceramic ball valve body is deformed to its maximum, the vicinity of the engaging portion will not be easily damaged. Therefore, force can be transmitted to the protrusion without strain, and the durability of the ball valve can be increased. Furthermore, by making the thickness of the engaging part less than 30% of the outer diameter of the valve and the inner diameter of the through hole, durability is significantly improved against the load from the seat that supports the ball valve. . Furthermore, durability against rotation can also be increased by making the inclination directions of the protrusions or protrusions provided on both sides opposite to each other. (Example) This invention will be further explained with reference to an example shown in the drawings. 1 is a ball valve made of ceramic. This ball valve 1 has a through hole 3 in a central valve body 2 through which high-temperature, high-pressure fluid passes, and the fluid flow is interrupted by rotation of the valve 1. Engaging portions 5 made of cemented carbide and having protrusions 4 are joined to both sides of the through hole 3 perpendicular to the penetration direction. The protrusions 4 of the engaging portion 5 are formed of linearly arranged protrusions 7, 7 or protrusions, and the protrusions 4 form an angle of 35° to 55° with respect to the penetrating direction of the through hole 3. It is installed at an angle. Reference numeral 9 denotes an engagement surface forming a protrusion of the engagement portion 5. As shown in FIG. 2, when the protrusions 4 are provided on both sides, the respective required angles θ are inclined in opposite directions, thereby providing greater durability against rotation of the ball valve 1. be able to. Moreover, this protrusion 4 may be constructed as shown in FIGS. 3 and 4. In other words, as shown in FIG. 3, the two protrusions 7, 7 are arranged at a required angle θ in the radial direction of the engaging portion 5, or as shown in FIG. A gap 6 may be provided at the center of the fourth protrusion that is inclined within a certain angle θ in the radial direction. As an example, the metal of the engaging part 5 is made of cemented carbide, and the main body is made of cemented carbide.
Ball valves made of Si 3 N 4 include ball valves A 1 and A 2 in which the protrusion 4 is at an angle of 45 degrees with respect to the penetrating direction of the through hole 3, and ball valves in which the above-mentioned inclination is 90 degrees.
A destructive load test was conducted in which B 1 and B 2 (Fig. 7) were held between seats supporting the valve and a load was applied from above, and the results shown in Table 1 were obtained.
【表】
以上の結果から突部を45°に傾斜させたセラミ
ツクボールバルブは、これを90°としたものより
も著しく破壊荷重が増加している、すなわち、強
度が著しく向上していることが明らかとなつた。
その上、第６図に示すようにボールバルブ本体
の外径d2を30mm、貫通孔３の内径d1を19mmとした
セラミツク製のボールバルブにおいて、係合部の
厚さ、つまり突部の高さを除いたものの厚さｈを
1.5mm，３mm，４mmとした場合、これらのセラミ
ツク製のボールバルブに対して、同様にシートに
挟持した後、圧縮荷重を上方から加えた時の破壊
荷重を調べたところ表２の結果が得られた。[Table] From the above results, it can be seen that the ceramic ball valve with the protrusion inclined at 45° has a significantly higher breaking load than the one with the protrusion inclined at 90°, that is, the strength is significantly improved. It became clear. Furthermore, in a ceramic ball valve in which the outer diameter d 2 of the ball valve body is 30 mm and the inner diameter d 1 of the through hole 3 is 19 mm, as shown in FIG. Thickness h excluding height
For ceramic ball valves of 1.5 mm, 3 mm, and 4 mm, the fracture loads were investigated when a compressive load was applied from above after the ceramic ball valves were similarly clamped between seats, and the results shown in Table 2 were obtained. It was done.
【表】
以上のことから係合部の厚さをボールバルブの
外径と貫通孔内径の30％以下とすることで著しく
その強度が向上するという結果が得られた。
さらに第５図に示すように２ケのボールバルブ
を連結したオルダム継手の噛合部８の場合におい
ても、傾斜角を35°〜55°としたときにその強度が
向上することも充分に確認された。
（考案の効果）
以上のとおりに、係合部に設けた突部におい
て、その貫通孔の貫通方向に対する傾斜角を35°
〜55°に配設することで著しく、セラミツク製の
ボールバルブの強度を向上させ、更に、係合部の
厚さをボールバルブの外径と貫通孔の内径の差の
30％以下とすることで同様にその強度を向上させ
ることのできる優れた効果をもつものである。[Table] From the above, it was found that the strength of the engaging part is significantly improved by setting the thickness of the engaging part to 30% or less of the outer diameter of the ball valve and the inner diameter of the through hole. Furthermore, as shown in Fig. 5, it has been sufficiently confirmed that the strength of the engaging part 8 of an Oldham joint connecting two ball valves is improved when the inclination angle is set between 35° and 55°. Ta. (Effect of the invention) As described above, in the protrusion provided on the engagement part, the inclination angle of the through hole with respect to the penetration direction is 35°.
By arranging the ball valve at ~55°, the strength of the ceramic ball valve is significantly improved, and the thickness of the engaging part is made equal to the difference between the outside diameter of the ball valve and the inside diameter of the through hole.
By setting the content to 30% or less, the strength can be similarly improved, which has an excellent effect.
第１図ａ，ｂはこの考案の実施例であるセラミ
ツク製ボールバルブの側面図と平面図、第２図〜
第４図のそれぞれａ，ｂは、他の実施例の側面図
と平面図を示し、第５図は、そのセラミツク製ボ
ールバルブを２個連結して使用する場合の側面図
であり、第６図は貫通孔の径と係合部の厚みとの
関係を示す側面図、第７図ａ〜ｄは従来例の両側
面図と平面図である。
１……ボールバルブ、２……ボールバルブ本
体、３……貫通孔、４……突条、５……係合部、
６……間隙、７……突部、８……噛合部。
Figures 1a and b are a side view and a plan view of a ceramic ball valve that is an embodiment of this invention, and Figures 2-
4A and 4B respectively show a side view and a plan view of another embodiment, FIG. 5 is a side view when two of the ceramic ball valves are connected and used, and FIG. The figure is a side view showing the relationship between the diameter of the through hole and the thickness of the engaging portion, and FIGS. 7a to 7d are both side views and a plan view of the conventional example. 1...Ball valve, 2...Ball valve body, 3...Through hole, 4...Protrusion, 5...Engaging portion,
6...Gap, 7...Protrusion, 8...Matching part.
Claims (1)
直交して両側部に外側に線状に配置する突部を
具える金属の係合部を接合し、上記突部の線状
の配置を係合部平面上、貫通方向に対して35°
〜55°傾斜させてなるセラミツク製ボールバル
ブ。 (2) 係合部の厚さをボールバルブの外径と貫通孔
の内径の差の30％以下とした実用新案登録請求
の範囲第１項記載のセラミツク製ボールバル
ブ。 (3) 一方の係合部に設けた突部の線状の配置が他
方の係合部に設けた突部のそれと互いに反対方
向に傾斜してなる実用新案登録請求の範囲第１
項及び第２項のいずれかに記載のセラミツク製
ボールバルブ。[Scope of Claim for Utility Model Registration] (1) Joining of a metal engaging part having a through hole in the center and protrusions arranged outward in a line on both sides perpendicular to the direction of penetration of the through hole. Then, the linear arrangement of the protrusion is set at 35° with respect to the penetration direction on the plane of the engagement part.
Ceramic ball valve tilted at ~55°. (2) The ceramic ball valve according to claim 1, wherein the thickness of the engaging portion is 30% or less of the difference between the outer diameter of the ball valve and the inner diameter of the through hole. (3) Utility model registration claim 1, in which the linear arrangement of the protrusions provided on one engaging part is inclined in the opposite direction to that of the protrusions provided on the other engaging part.
The ceramic ball valve according to any one of Items 1 and 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11685286U JPH0425564Y2 (en) | 1986-07-31 | 1986-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11685286U JPH0425564Y2 (en) | 1986-07-31 | 1986-07-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6396383U JPS6396383U (en) | 1988-06-22 |
| JPH0425564Y2 true JPH0425564Y2 (en) | 1992-06-18 |
Family
ID=31001830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11685286U Expired JPH0425564Y2 (en) | 1986-07-31 | 1986-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425564Y2 (en) |
-
1986
- 1986-07-31 JP JP11685286U patent/JPH0425564Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6396383U (en) | 1988-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0307131B1 (en) | Metal-ceramic joined composite bodies and joining process therefore | |
| EP0224345A1 (en) | Valve seat insert and cylinder head with the valve seat insert | |
| JP4625035B2 (en) | Shaft assembly | |
| US3186431A (en) | Connection assembly for pressure lines | |
| JPH0336787B2 (en) | ||
| JPH0425564Y2 (en) | ||
| WO2004048836A1 (en) | Fluid coupling and method of designing the same | |
| US4934857A (en) | Co-conic fastener and fastening method | |
| JPH0477704B2 (en) | ||
| CN108698439A (en) | Axle | |
| JPH0674811B2 (en) | Manufacturing method of sliding parts | |
| JPS61249664A (en) | Production of accumulator | |
| JPS5817289A (en) | Method of joining ceramic pipe | |
| JPH0438949B2 (en) | ||
| JPS62237178A (en) | Ceramic ball valve | |
| JPH074392Y2 (en) | Spigot fittings | |
| JPH0338401Y2 (en) | ||
| JPH0246320A (en) | Coupling | |
| JPS63214579A (en) | High-temperature, high-pressure difference valve | |
| JPH0351321Y2 (en) | ||
| JPH0516192Y2 (en) | ||
| JPH03250129A (en) | Manufacture of column-beam joint fitting | |
| JPH0524945A (en) | Ceramics-metal joined body for engine parts | |
| KR100322239B1 (en) | Joining jig for joining dissimilar substrates | |
| JP2540808Y2 (en) | Piping fittings |