JPH0448469U - - Google Patents
Info
- Publication number
- JPH0448469U JPH0448469U JP8958390U JP8958390U JPH0448469U JP H0448469 U JPH0448469 U JP H0448469U JP 8958390 U JP8958390 U JP 8958390U JP 8958390 U JP8958390 U JP 8958390U JP H0448469 U JPH0448469 U JP H0448469U
- Authority
- JP
- Japan
- Prior art keywords
- face
- stationary
- rotating shaft
- static pressure
- contact seal
- 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.)
- Granted
Links
- 230000003068 static effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Mechanical Sealing (AREA)
Description
第１図は第１考案の実施例を示す縦断面図、第
２図は第２考案の一実施例を示す縦断面図、第３
図は従来例を示す縦断面図、第４図は非接触シー
ルの漏洩特性を示す図、第５図は多段式非接触シ
ールの漏洩特性を示す図、第６図は本考案の作用
を説明するための漏洩特性の図である。
符号の説明、１……回転軸、２……回転側リン
グ、３……微小隙間、６……昇圧端面、７……静
圧端面、１２……インサート、２４……バイパス
路。
Fig. 1 is a longitudinal sectional view showing an embodiment of the first invention, Fig. 2 is a longitudinal sectional view showing an embodiment of the second invention, and Fig. 3 is a longitudinal sectional view showing an embodiment of the second invention.
The figure is a vertical cross-sectional view showing a conventional example, Figure 4 is a diagram showing the leakage characteristics of a non-contact seal, Figure 5 is a diagram showing the leakage characteristics of a multi-stage non-contact seal, and Figure 6 explains the operation of the present invention. FIG. 3 is a diagram of leakage characteristics for Explanation of symbols: 1...Rotating shaft, 2...Rotating side ring, 3...Minute gap, 6...Pressure end face, 7...Static pressure end face, 12...Insert, 24...Bypass path.
Claims (1)
端面に微少隙間を介して対向する昇圧端面と該昇
圧端面の反対側に静圧端面とを有する静止側リン
グが、前記回転軸と同軸に且つ軸方向へ移動可能
に配置され、すくなくとも前記静止側リングが複
数設けれている非接触シールにおいて、 密封流体下流側に設けられる静止側リングの静
圧端面が上流側より大きな面積を有する非接触シ
ール。 (2) 回転軸に同軸に固設される回転側リングの
端面に微少隙間を介して対向する昇圧端面と該昇
圧端面の反対側に静圧端面とを有する静止側リン
グが、前記回転軸と同軸に且つ軸方向へ移動可能
に配置され、すくなくとも前記静止側リングが複
数設けれている非接触シールにおいて、 上流側の密封流体の圧力を下流側に設けられる
静止側リングの静圧端面に導くバイパス路を設け
た非接触シール。[Claims for Utility Model Registration] (1) A stationary device having a boosting end face facing the end face of a rotating side ring coaxially fixed to the rotating shaft with a slight gap therebetween, and a static pressure end face on the opposite side of the boosting end face. In a non-contact seal in which a side ring is disposed coaxially with the rotating shaft and movable in the axial direction, and at least a plurality of the stationary side rings are provided, a static pressure end face of the stationary side ring provided on the downstream side of the sealed fluid. A non-contact seal with a larger area than the upstream side. (2) A stationary side ring having a boosting end face facing the end face of the rotating side ring coaxially fixed to the rotating shaft through a small gap and a static pressure end face on the opposite side of the boosting end face is connected to the rotating shaft. In a non-contact seal that is disposed coaxially and movably in the axial direction and is provided with at least a plurality of stationary side rings, the pressure of the sealing fluid on the upstream side is guided to the static pressure end face of the stationary side ring provided on the downstream side. Non-contact seal with bypass path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8958390U JP2513675Y2 (en) | 1990-08-28 | 1990-08-28 | Non-contact seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8958390U JP2513675Y2 (en) | 1990-08-28 | 1990-08-28 | Non-contact seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0448469U true JPH0448469U (en) | 1992-04-24 |
| JP2513675Y2 JP2513675Y2 (en) | 1996-10-09 |
Family
ID=31823662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8958390U Expired - Fee Related JP2513675Y2 (en) | 1990-08-28 | 1990-08-28 | Non-contact seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2513675Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006040865A1 (en) * | 2004-10-08 | 2006-04-20 | Nippon Pillar Packing Co., Ltd. | Static pressure type non-contact gas seal |
-
1990
- 1990-08-28 JP JP8958390U patent/JP2513675Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006040865A1 (en) * | 2004-10-08 | 2006-04-20 | Nippon Pillar Packing Co., Ltd. | Static pressure type non-contact gas seal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2513675Y2 (en) | 1996-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |