JPH0225775U - - Google Patents
Info
- Publication number
- JPH0225775U JPH0225775U JP10319188U JP10319188U JPH0225775U JP H0225775 U JPH0225775 U JP H0225775U JP 10319188 U JP10319188 U JP 10319188U JP 10319188 U JP10319188 U JP 10319188U JP H0225775 U JPH0225775 U JP H0225775U
- Authority
- JP
- Japan
- Prior art keywords
- seal ring
- seal
- ring
- rotating shaft
- rotating
- 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
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
第１図は本考案の一実施例の断面図、第２図ａ
は第１図のＣ―Ｃ断面矢視図、第２図ｂは第２図
ａのＤ―Ｄ断面矢視図、第３図はシールすきま内
に発生する流体力とシールすきまと溝の深さの相
互関係の説明図、第４図は従来技術の断面図、第
５図は上記従来技術における力の説明図、第６図
は第４図のＣ―Ｃ断面矢視図である。
１…回転軸、２…ケーシング、３…シールケー
シング、４…回転環、５…回転環保持金具、６…
シールリング、７…ばね、８…Ｏリング、９…溝
、１０…圧電セラミツクス、１１…供給電源。
Figure 1 is a sectional view of an embodiment of the present invention, Figure 2a
is a cross-sectional view taken along line C-C in Figure 1, Figure 2b is a cross-sectional view taken along line D-D in Figure 2a, and Figure 3 shows the fluid force generated within the seal gap and the depth of the seal gap and groove. FIG. 4 is a sectional view of the prior art, FIG. 5 is an explanatory diagram of the force in the prior art, and FIG. 6 is a sectional view taken along the line C--C in FIG. 4. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Casing, 3... Seal casing, 4... Rotating ring, 5... Rotating ring holding fitting, 6...
Seal ring, 7... Spring, 8... O-ring, 9... Groove, 10... Piezoelectric ceramics, 11... Power supply.
Claims (1)
た回転環および前記摺動面に向き合つて近接する
摺動面を備え回転軸の軸線方向に移動可能なシー
ルリングを備えたメカニカルシールにおいて、前
記シールリングに設けられた複数個の凹部のそれ
ぞれに装着されその回転環に向き合う側でシール
リングの螺旋溝を形成する複数個の圧電セラミツ
クス、およびシール漏洩量あるいはシールリング
温度の信号に基いて圧電セラミツクスに印加する
電圧を変えて圧電セラミツクスを回転軸の軸線方
向に膨脹または収縮させ前記螺旋溝の深さを変え
る制御装置を備えたことを特徴とするメカニカル
シール。 A mechanical seal comprising a rotating ring provided on the rotating shaft and having a sliding surface perpendicular to the rotating shaft, and a seal ring having a sliding surface facing and adjacent to the sliding surface and movable in the axial direction of the rotating shaft. , a plurality of piezoelectric ceramics are installed in each of the plurality of recesses provided in the seal ring and form a spiral groove of the seal ring on the side facing the rotating ring, and a plurality of piezoelectric ceramics are installed in each of the plurality of recesses provided in the seal ring, and a plurality of piezoelectric ceramics form a spiral groove of the seal ring on the side facing the rotating ring, and a signal of the seal leakage amount or seal ring temperature. 1. A mechanical seal comprising: a control device that expands or contracts the piezoelectric ceramic in the axial direction of a rotating shaft by changing the voltage applied to the piezoelectric ceramic based on the voltage applied to the piezoelectric ceramic, thereby changing the depth of the helical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10319188U JPH0225775U (en) | 1988-08-05 | 1988-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10319188U JPH0225775U (en) | 1988-08-05 | 1988-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0225775U true JPH0225775U (en) | 1990-02-20 |
Family
ID=31333791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10319188U Pending JPH0225775U (en) | 1988-08-05 | 1988-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0225775U (en) |
-
1988
- 1988-08-05 JP JP10319188U patent/JPH0225775U/ja active Pending
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