JPH0137251Y2 - - Google Patents
Info
- Publication number
- JPH0137251Y2 JPH0137251Y2 JP19777785U JP19777785U JPH0137251Y2 JP H0137251 Y2 JPH0137251 Y2 JP H0137251Y2 JP 19777785 U JP19777785 U JP 19777785U JP 19777785 U JP19777785 U JP 19777785U JP H0137251 Y2 JPH0137251 Y2 JP H0137251Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- welded
- cover
- header
- convex portion
- 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
- 238000005304 joining Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 13
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、例えば流体の圧力側定などに用いる
圧力変換器のように、圧力が加わる状態で使用さ
れる圧力容器に関し、特にその構成部材間の接合
技術に関するものである。[Detailed description of the invention] [Field of industrial application] The present invention relates to a pressure vessel used under pressure, such as a pressure transducer used for determining the pressure of a fluid, and particularly to its constituent members. This relates to the joining technology between the two.
従来より、筒状の第１部材の外周面を覆うよう
に筒状の第２部材を配置し、これらをその一端部
で接合しようとする場合に、第７図に示したよう
に第１部材１と第２部材２とを溶接部３で溶接す
る方法が用いられる。４は溶接ビードを示す。
Conventionally, when a cylindrical second member is disposed so as to cover the outer peripheral surface of a cylindrical first member and the two members are to be joined at one end, the first member as shown in FIG. 1 and the second member 2 are welded together at the welding portion 3. 4 indicates a weld bead.
ところが、第１部材が例えば圧力／電気変換部
本体を収容したセンサヘツダであり、第２部材が
このヘツダ外周面に配置されてその間に圧力導入
路を形成するようなカバーであつたりすると、こ
の圧力変換器が使用される環境によつて、第１お
よび第２部材間の間隙５に数100Kg／cm2から1000
Kg／cm2もの静圧がかかる場合がある。この圧力に
より、例えば第２部材２は図中に破線で示したよ
うに変位し、溶接部３の下端に引きはがし応力の
著しい集中が起こり、この部分から溶接部に割れ
が生じることがある。
However, if the first member is, for example, a sensor header that houses a pressure/electrical converter main body, and the second member is a cover that is arranged on the outer peripheral surface of this header and forms a pressure introduction path therebetween, this pressure Depending on the environment in which the transducer is used, the gap 5 between the first and second members may be between several 100 kg/cm 2 and 1000 kg/cm 2 .
Static pressures of up to Kg/ cm2 may be applied. Due to this pressure, for example, the second member 2 is displaced as shown by the broken line in the figure, and a significant concentration of peeling stress occurs at the lower end of the welded part 3, and cracks may occur in the welded part from this part.
本考案は、第１および第２部材の接合部の少な
くとも一方に凸部を設け、当該凸部の全面を溶接
するとともに、当該溶接部近傍の第１および第２
部材の少なくとも一方の端面に、上記溶接部に沿
つて溝を設けたものである。
The present invention provides a convex portion on at least one of the joint portions of the first and second members, welds the entire surface of the convex portion, and also welds the first and second members near the welded portion.
A groove is provided on at least one end surface of the member along the welded portion.
引きはがし応力が単なる引張り応力となり応力
の集中が避けられるとともに、溝を切つたことで
接合部付近が柔構造化し変位を吸収する。
Peeling stress becomes mere tensile stress, avoiding stress concentration, and cutting the grooves creates a flexible structure near the joint, absorbing displacement.
第２図は本考案を圧力変換器に適用した場合の
一実施例を示す断面図である。同図において、セ
ンサヘツダ１１はステンレス製の円筒状部材で、
内部構造の詳細は省略したが、内部にシリコンダ
イヤフラムからなる感圧半導体素子を収容してい
る。１２はその感圧半導体素子に電源電圧および
各種信号を供給したりあるいはその出力を外部に
取り出したりするためのリードピンで、それぞれ
ボンデイングワイヤを介して感圧半導体素子の各
部に接続されている。このリードピンはヘツダ１
１の底部を貫通して設けられガラスシール部１１
１で気密に固定されている。
FIG. 2 is a sectional view showing an embodiment of the present invention applied to a pressure transducer. In the figure, the sensor header 11 is a cylindrical member made of stainless steel.
Although details of the internal structure have been omitted, a pressure-sensitive semiconductor element made of a silicon diaphragm is housed inside. Lead pins 12 are used to supply a power supply voltage and various signals to the pressure-sensitive semiconductor element or take out the output thereof to the outside, and are connected to each part of the pressure-sensitive semiconductor element through bonding wires. This lead pin is header 1
A glass seal portion 11 is provided through the bottom of the glass seal portion 11.
1 and is airtightly fixed.
ヘツダ１１は、その１端の全周にわたり、変換
器本体のボデイ１３に溶接部１４において溶接さ
れるとともに、他端には同じくその全周にわたつ
てカバー１５が溶接部１６において溶接されてい
る。カバー１５は円筒状で、ヘツダ１１の外周面
を覆うように配置され、他端はボデイ１３に溶接
部１７において溶接されている。 The header 11 is welded to the body 13 of the converter main body at a welding part 14 over the entire circumference of one end, and a cover 15 is welded to the welding part 16 around the entire circumference of the other end. . The cover 15 has a cylindrical shape and is arranged to cover the outer peripheral surface of the header 11, and the other end is welded to the body 13 at a welding portion 17.
ボデイ１３は、ヘツダ１１内のシリコンダイヤ
フラムの一方の主面側に第１の圧力を導く第１の
圧力導入路１３１を有するとともに、ヘツダ１１
の外周面とカバー１５の内周面との間の間隙１８
およびびヘツダ１１に設けた圧力導入路１１２を
介してシリコンダイヤフラムの他方の主面に第２
の圧力を導く第２の圧力導入路１３２を有してい
る。第１および第２の圧力をともに複測定系のプ
ロセスから導入する場合には差圧測定となり、一
方（通常はシリコンダイヤフラムの凹側、つまり
電気回路を形成しない側）を真空に封止するか大
気に連通させた場合にはそれらを基準圧力とした
他方の圧力の測定が行なえる。 The body 13 has a first pressure introduction path 131 that guides the first pressure to one main surface side of the silicon diaphragm in the header 11, and
Gap 18 between the outer peripheral surface of the cover 15 and the inner peripheral surface of the cover 15
and the second main surface of the silicon diaphragm via the pressure introduction path 112 provided in the header 11
It has a second pressure introduction path 132 that introduces the pressure. When both the first and second pressures are introduced from a multi-measurement process, it is a differential pressure measurement, and one side (usually the concave side of the silicon diaphragm, that is, the side that does not form an electric circuit) is sealed in a vacuum. When communicating with the atmosphere, the other pressure can be measured using these as the reference pressure.
ここで、ヘツダ１１とカバー１５との溶接部１
を拡大して第１図に示す。同図から明らかなよう
に、カバー１５の端部には凸部１５１を設け、こ
の凸部１５１の全面において、つまり凸部１５１
とヘツダ１１との接触面の途中に留まることなく
その全面にわたつて、換言すれば、溶接ビード１
６１が間隙１８まで達するように、溶接を行なつ
ている。 Here, welding part 1 between header 11 and cover 15
is shown in Fig. 1 on an enlarged scale. As is clear from the figure, a convex portion 151 is provided at the end of the cover 15, and the convex portion 151 is provided on the entire surface of the convex portion 151.
In other words, the weld bead 1 does not stay in the middle of the contact surface with the header 11 but over the entire surface.
Welding is performed so that 61 reaches the gap 18.
この結果、間隙１８に大きな圧力が加わり、カ
バー１５を変位させようとしても、その際溶接部
１６に生ずる応力は第７図の従来構造における場
合のような引きはがし応力ではなく単なる引張り
応力となり、応力の著しい集中を避けることがで
きる。 As a result, even if a large pressure is applied to the gap 18 and the cover 15 is to be displaced, the stress generated in the welded portion 16 is not a peeling stress as in the conventional structure shown in FIG. 7, but a mere tensile stress. Significant stress concentrations can be avoided.
のみならず、本実施例では溶接部１６の近傍の
ヘツダ１１およびカバー１５の端面にそれぞれ全
周にわたつて溝１９および２０を設けてある。こ
れにより、間隙１８と溝１９，２０とが近接する
ＡおよびＢの部分が柔構造体となり、カバー１５
の変位そのものを吸収するように作用する。 In addition, in this embodiment, grooves 19 and 20 are provided on the end faces of the header 11 and the cover 15 near the welded portion 16, respectively, over the entire circumference. As a result, the portions A and B where the gap 18 and the grooves 19 and 20 are close to each other become flexible structures, and the cover 15
acts to absorb the displacement itself.
また、この柔構造体は、変換器の使用時に印加
する静圧による変位を吸収するのみならず、溶接
部１６の溶接そのものの熱によつて生ずる歪も吸
収し、ガラスシール部１１１の破壊を防止すると
ともにより安定な溶接構造を実現する。 In addition, this flexible structure not only absorbs the displacement due to the static pressure applied when the transducer is used, but also absorbs the distortion caused by the heat of welding itself in the welding part 16, and prevents the glass seal part 111 from breaking. This will prevent this and create a more stable welded structure.
一例として、外径18mmのヘツダ１１に内径18.4
mm、外径28.5mmのカバー１５を溶接する場合にお
いて、カバー１５に幅Ｗ＝0.6mmの凸部１５１を
設け、電子ビーム溶接を行なつたものについて、
420Kg／cm2の静圧を繰り返し印加してリークの発
生を調べたところ、第７図の従来例では1000〜
10000回でリークが発生したのに対し、上記凸部
１５１の全幅にわたつて溶接を行ない、かつW1
＝0.5mmの幅をおいて深さd1＝1.0mmの溝１９およ
びW2＝0.8mmの幅をおいて深さd2＝1.1mmの溝２
０を設けた本実施例では、1000000回までリーク
が発生しなかつた。 As an example, for a header 11 with an outer diameter of 18 mm, an inner diameter of 18.4
When welding a cover 15 with an outer diameter of 28.5 mm, the cover 15 is provided with a protrusion 151 with a width W of 0.6 mm and electron beam welding is performed.
When we investigated the occurrence of leaks by repeatedly applying static pressure of 420 Kg/ cm2 , we found that in the conventional example shown in Figure 7, it was 1000 ~
Although leakage occurred after 10,000 cycles, welding was performed over the entire width of the convex portion 151, and W1
= Groove 19 with a width of 0.5 mm and a depth d1 = 1.0 mm and groove 2 with a width of W2 = 0.8 mm and a depth d2 = 1.1 mm.
In this example in which 0 was provided, no leakage occurred up to 1,000,000 times.
また、ヘツダ１１の端面に設けた溝１９を、Ｏ
リング溝として用いることにより、次に示すよう
な利点がある。 In addition, the groove 19 provided on the end face of the header 11 is
By using it as a ring groove, there are the following advantages.
すなわち、従来よりセンサアセンブリを単体で
圧力印加試験する際、試験装置にセツトしたセン
サアセンブリに対し、何らかの手段で差圧および
静圧を印加して行なわなければならないが、数
100Kg／cm2から1000Kg／cm2もの静圧を印加させる
ことは必ずしも容易ではなかつた。つまり、試験
装置のボデイにＯリングを介してセンサアセンブ
リをセツトし、やはりＯリングを装着したカバー
で押えるが、十分な気密性および機械的強度を得
るためにはＯリング用溝に隣接する部分のカバー
肉厚を大きくする必要があるし、また組み付け時
に下向きとなる上記溝からＯリングが抜け落ちや
すいなどの問題点があつた。 In other words, conventionally, when performing a pressure application test on a single sensor assembly, it is necessary to apply differential pressure and static pressure by some means to the sensor assembly set in a test device, but this requires several methods.
It has not always been easy to apply a static pressure of 100Kg/cm 2 to 1000Kg/cm 2 . In other words, the sensor assembly is set in the body of the test device via an O-ring and is held down with a cover fitted with an O-ring, but in order to obtain sufficient airtightness and mechanical strength, the part adjacent to the O-ring groove must be It is necessary to increase the wall thickness of the cover, and there are also problems such as the O-ring easily falling out of the downward-facing groove during assembly.
これに対し、本実施例のヘツダ１１を用いた場
合は、第３図に示すように溝１９にＯリングを装
着することでこのような問題を解決することがで
きる。同図において、３１は試験装置のボデイ
で、第１および第２の圧力導入路３１１，３１２
を有している。このボデイ３１の凹部底面にセン
サヘツダ１１をセツトし、カバー３２で押える。
ヘツダ１１の開放端端面はＯリング３３を介して
ボデイ３１に接触し、他方、底部外面は上記溝１
９の内部に挿入したＯリング３４を介してカバー
３２に接触する。３５はコネクタである。なお、
溝１９の周辺部にはＯリングシールを確実に行な
うために十分な幅の平面部１１３，１１４を設け
る必要がある（特に底圧となる側には必要）。 On the other hand, when the header 11 of this embodiment is used, this problem can be solved by installing an O-ring in the groove 19 as shown in FIG. In the same figure, 31 is the body of the test device, and the first and second pressure introduction passages 311, 312
have. The sensor header 11 is set on the bottom of the recess of the body 31 and is held down with the cover 32.
The open end face of the header 11 contacts the body 31 via the O-ring 33, while the outer surface of the bottom part contacts the groove 1.
The cover 32 is contacted via an O-ring 34 inserted into the inside of the cover 9. 35 is a connector. In addition,
It is necessary to provide flat parts 113 and 114 of sufficient width around the groove 19 to ensure O-ring sealing (particularly necessary on the side where bottom pressure is applied).
このような構成にすることにより、十分な圧力
耐性が得られると同時に、組み付け、組み外しが
容易となり、センサアツセンブリ単体での圧力印
加試験が容易にできる。 By adopting such a configuration, sufficient pressure resistance can be obtained, and at the same time, assembly and disassembly can be facilitated, and a pressure application test on the sensor assembly alone can be easily performed.
なお、溶接する凸部の具体的な形態は第１図に
示した例に限らず、例えば第４図ないし第６図の
各図に示したような種々の形態であつてよい。図
において、１５１Ａ〜１５１Ｃはカバー１５に設
けた凸部、１１５Ａ，１１５Ｂはヘツダ１１に設
けた凸部、１８Ａ〜１８Ｃはヘツダ１１とカバー
１５との間の間隙を示す。 Note that the specific form of the convex portion to be welded is not limited to the example shown in FIG. 1, but may be various forms such as those shown in each of FIGS. 4 to 6, for example. In the figure, 151A to 151C are convex portions provided on the cover 15, 115A and 115B are convex portions provided on the header 11, and 18A to 18C are gaps between the header 11 and the cover 15.
以上、圧力変換器を例に説明したが、本考案は
これに限定されるものではなく、筒状の第１部材
およびその外周面を覆うように配置された筒状の
第２部材とを１端で溶接し、その間隙に圧力を受
ける構造を有する圧力容器には同様に適用でき
る。 Although the pressure transducer has been described above as an example, the present invention is not limited to this. It can be similarly applied to a pressure vessel having a structure in which the ends are welded and pressure is received in the gap between them.
〔考案の効果〕
以上説明したように、本考案によれば第１およ
び第２部材の接合部の少なくとも一方に凸部を設
け、その凸部の全面を溶接するとともに、当該溶
接部近傍の第１および第２部材の少なくとも一方
の端面に、上記溶接部に沿つて溝を設けたことに
より、繰り返し耐圧特性が向上し信頼性が高まる
とともに小形化が可能となる。[Effects of the Invention] As explained above, according to the present invention, a convex portion is provided on at least one of the joining portions of the first and second members, the entire surface of the convex portion is welded, and the convex portion near the welded portion is welded. By providing a groove along the welded portion in at least one end face of the first and second members, the repeated pressure resistance characteristics are improved, reliability is increased, and miniaturization is possible.
第１図ないし第３図は本考案の一実施例を示す
図で、第１図は溶接部の断面図、第２図は圧力変
換器の断面図、第３図はセンサアツセンブリの圧
力印加試験装置にセツトした状態を示す断面図、
第４図ないし第６図はそれぞれ本考案の他の実施
例を示す断面図、第７図は従来例を示す断面図で
ある。
１１……ヘツダ（第１部材）、１５……カバー
（第２部材）、１６……溶接部、１８，１８Ａ〜１
８Ｃ……間隙、１９，２０……溝、１１５Ａ，１
１５Ｂ，１５１，１５１Ａ〜１５１Ｃ……凸部、
１６１……溶接ビード。
Figures 1 to 3 are views showing an embodiment of the present invention, in which Figure 1 is a sectional view of a welded part, Figure 2 is a sectional view of a pressure transducer, and Figure 3 is a pressure application of a sensor assembly. A sectional view showing the state set in the test equipment,
4 to 6 are sectional views showing other embodiments of the present invention, and FIG. 7 is a sectional view showing a conventional example. 11... Header (first member), 15... Cover (second member), 16... Welding part, 18, 18A-1
8C...Gap, 19,20...Groove, 115A,1
15B, 151, 151A to 151C...Convex portion,
161...Welding bead.
Claims (1)
うように配置され１端部で内周面が第１部材の外
周面に接合された筒状の第２部材とを有し、第１
および第２部材間の間隙に圧力が印加される圧力
容器において、第１および第２部材の接合部の少
なくとも一方に凸部を設け、当該凸部の全面を溶
接するとともに、当該溶接部近傍の第１および第
２部材の少なくとも一方の端面に上記溶接部に沿
つて溝を設けたことを特徴とする圧力容器。 It has a cylindrical first member, and a cylindrical second member that is arranged to cover the outer circumferential surface of the first member and whose inner circumferential surface is joined to the outer circumferential surface of the first member at one end, 1st
In a pressure vessel in which pressure is applied to the gap between the second member, a convex portion is provided on at least one of the joining portions of the first and second members, the entire surface of the convex portion is welded, and the area near the welded portion is welded. A pressure vessel characterized in that a groove is provided in at least one end face of the first and second members along the welded portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19777785U JPH0137251Y2 (en) | 1985-12-23 | 1985-12-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19777785U JPH0137251Y2 (en) | 1985-12-23 | 1985-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62106063U JPS62106063U (en) | 1987-07-07 |
| JPH0137251Y2 true JPH0137251Y2 (en) | 1989-11-10 |
Family
ID=31157850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19777785U Expired JPH0137251Y2 (en) | 1985-12-23 | 1985-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0137251Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9897188B2 (en) | 2014-12-03 | 2018-02-20 | Musashi Seimitsu Industry Co., Ltd. | Differential device |
-
1985
- 1985-12-23 JP JP19777785U patent/JPH0137251Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9897188B2 (en) | 2014-12-03 | 2018-02-20 | Musashi Seimitsu Industry Co., Ltd. | Differential device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62106063U (en) | 1987-07-07 |
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