JPS61186791U - - Google Patents
Info
- Publication number
- JPS61186791U JPS61186791U JP7177085U JP7177085U JPS61186791U JP S61186791 U JPS61186791 U JP S61186791U JP 7177085 U JP7177085 U JP 7177085U JP 7177085 U JP7177085 U JP 7177085U JP S61186791 U JPS61186791 U JP S61186791U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- medium
- sealed
- switching valve
- automatic switching
- 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
- 238000007789 sealing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
第１図は本考案の一実施例を示す構成説明図、
第２図は本考案の他の実施例を示す要部断面図、
第３図は従来例を示す説明図である。
１は回転軸、２ａはメイテイングリング、２ｂ
はメカニカルシール、３はシールハウジング、４
はコンプレツサ吸入圧力室、５は油室、６はＯリ
ング溝、７はＯリング、８ａはパイロツト圧導入
管路、８ｂ・９ａ・９ｂは管路、１０はパイロツ
ト弁、１１はエアポンプ（エアモータでも可）、
１２はエアモータ、Ａは圧力制御機構である。
FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view of main parts showing another embodiment of the present invention;
FIG. 3 is an explanatory diagram showing a conventional example. 1 is the rotating shaft, 2a is the mating ring, 2b
is mechanical seal, 3 is seal housing, 4 is
is the compressor suction pressure chamber, 5 is the oil chamber, 6 is the O-ring groove, 7 is the O-ring, 8a is the pilot pressure introduction pipe, 8b, 9a, 9b are the pipes, 10 is the pilot valve, 11 is the air pump (even with an air motor) possible),
12 is an air motor, and A is a pressure control mechanism.
Claims (1)
して被密封媒体をシールで軸封する構造であつて
、上記油圧及び被密封媒体の圧力をパイロツト圧
として作動媒体を制御する自動切換弁と、上記油
圧が被密封媒体の圧力より低下したとき、被密封
媒体を増圧し前記自動切換弁を介して作動媒体を
導くパイロツト圧導入管路とを備え、該パイロツ
ト圧導入管路に接続され油室と被密封媒体の充填
された圧力室との間に形成されたシールハウジン
グのＯリング溝に、回転軸側のシール面に対しシ
ールハウジング側から前記作動媒体により押圧さ
れるＯリングを収嵌したことを特徴とする非常用
軸封装置。 The automatic switching valve has a structure in which the sealed medium is shaft-sealed with a seal using a hydraulic pressure in an oil chamber higher than the pressure of the sealed medium, and the automatic switching valve controls the working medium by using the hydraulic pressure and the pressure of the sealed medium as pilot pressure. and a pilot pressure introduction pipe that increases the pressure of the sealed medium and guides the working medium through the automatic switching valve when the oil pressure becomes lower than the pressure of the sealed medium, and a pilot pressure introduction pipe connected to the pilot pressure introduction pipe that increases the pressure of the sealed medium and guides the working medium through the automatic switching valve. An O-ring that is pressed by the working medium from the seal housing side against the seal surface on the rotating shaft side is fitted into the O-ring groove of the seal housing formed between the chamber and the pressure chamber filled with the sealed medium. An emergency shaft sealing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177085U JPS61186791U (en) | 1985-05-15 | 1985-05-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177085U JPS61186791U (en) | 1985-05-15 | 1985-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61186791U true JPS61186791U (en) | 1986-11-21 |
Family
ID=30609557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7177085U Pending JPS61186791U (en) | 1985-05-15 | 1985-05-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61186791U (en) |
-
1985
- 1985-05-15 JP JP7177085U patent/JPS61186791U/ja active Pending
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