JPH0278867U - - Google Patents
Info
- Publication number
- JPH0278867U JPH0278867U JP15831688U JP15831688U JPH0278867U JP H0278867 U JPH0278867 U JP H0278867U JP 15831688 U JP15831688 U JP 15831688U JP 15831688 U JP15831688 U JP 15831688U JP H0278867 U JPH0278867 U JP H0278867U
- Authority
- JP
- Japan
- Prior art keywords
- housing
- annular body
- circumferential direction
- divided
- float
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第１図は本考案フロート型セグメントシールの
一実施例を示す部分断面図、第２図は同じく環状
体のフロート状態の説明図、第３図は同じく環状
体の部分斜視図、第４図は他の実施例を示す環状
体内周面の部分展開図、第５図は従来のフロート
型セグメントシールを示す部分断面図、第６図は
同じく環状体のフロート状態の説明図、第７図は
他の従来例を示す部分断面図、第８図は環状体が
非分割のフローテイングリングシールを示す説明
図である。
１……ハウジング、２……収容部、３……環状
体、４……バツクリング、４ａ，５ａ……内周面
、５……シールリング、６……カバーリング、８
，９……エキステンシヨンスプリング、１０……
コンプレツシヨンスプリング、１２，１３……溝
、１４，１５……分割部、１５′……ステツプ部
、１６……回転体、１６ａ……外周面、Ａ……高
圧空間、Ｂ……低圧空間、Ｃ……クリアランス。
Fig. 1 is a partial sectional view showing an embodiment of the float type segment seal of the present invention, Fig. 2 is an explanatory diagram of the annular body in a floating state, Fig. 3 is a partial perspective view of the annular body, and Fig. 4 is a partial cross-sectional view showing an embodiment of the float type segment seal of the present invention. FIG. 5 is a partial cross-sectional view showing a conventional float type segment seal, FIG. 6 is an explanatory diagram of the annular body in a floating state, and FIG. 7 is another example. FIG. 8 is an explanatory view showing a floating ring seal in which the annular body is not divided. DESCRIPTION OF SYMBOLS 1... Housing, 2... Accommodation part, 3... Annular body, 4... Back ring, 4a, 5a... Inner peripheral surface, 5... Seal ring, 6... Cover ring, 8
, 9... Extension spring, 10...
Compression spring, 12, 13...Groove, 14, 15...Divided part, 15'...Step part, 16...Rotating body, 16a...Outer peripheral surface, A...High pressure space, B...Low pressure space , C... Clearance.
Claims (1)
内に、円周方向に複数に分割されその分割部が密
閉状に互いに合接するとともにエキステンシヨン
スプリングで円周方向に結束された非回転の環状
体が収容され、該環状体の一端面はハウジングの
端面と密接し、該環状体の内周面は微小なクリア
ランスを介して回転体の外周面と対向するフロー
ト型セグメントシールにおいて、前記環状体の内
周面に、円周方向へ延びるとともに、前記分割部
へ開放された所要数の溝を形成したことを特徴と
するフロート型セグメントシール。 ２ 前記分割部が、前記溝よりも低圧空間側とな
る位置で円周方向へ屈曲したステツプ構造になる
ことを特徴とする請求項１に記載のフロート型セ
グメントシール。 ３ 前記環状体が、分割部の位相が互いに異なり
対向端面同士で密接した高圧空間側のバツクリン
グと低圧空間側のシールリングを有し、前記溝を
前記バツクリングの内周面またはバツクリングお
よびシールリングの双方の内周面に形成したこと
を特徴とする請求項１に記載のフロート型セグメ
ントシール。[Claims for Utility Model Registration] 1. An annular housing formed on the inner periphery of the housing is divided into a plurality of parts in the circumferential direction, and the divided parts are hermetically joined to each other, and an extension spring is used to connect the housing in the circumferential direction. A non-rotating annular body bound to the housing is housed, one end surface of the annular body is in close contact with the end surface of the housing, and the inner circumferential surface of the annular body is a float that faces the outer circumferential surface of the rotating body through a minute clearance. A float-type segment seal, characterized in that a required number of grooves are formed on the inner circumferential surface of the annular body, extending in the circumferential direction and opening to the dividing portion. 2. The float type segment seal according to claim 1, wherein the divided portion has a step structure bent in the circumferential direction at a position closer to the low pressure space than the groove. 3. The annular body has a back ring on the high pressure space side and a seal ring on the low pressure space side, in which the phases of the divided portions are different from each other and the opposing end faces are in close contact with each other, and the groove is formed on the inner peripheral surface of the back ring or on the back ring and the seal ring. 2. The float type segment seal according to claim 1, wherein the segment seal is formed on both inner peripheral surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988158316U JPH0517513Y2 (en) | 1988-12-05 | 1988-12-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988158316U JPH0517513Y2 (en) | 1988-12-05 | 1988-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0278867U true JPH0278867U (en) | 1990-06-18 |
| JPH0517513Y2 JPH0517513Y2 (en) | 1993-05-11 |
Family
ID=31438531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988158316U Expired - Lifetime JPH0517513Y2 (en) | 1988-12-05 | 1988-12-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517513Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2908516A (en) * | 1954-08-02 | 1959-10-13 | Koppers Co Inc | Circumferential shaft seal |
| US2956824A (en) * | 1957-12-27 | 1960-10-18 | Koppers Co Inc | Vented shaft seal |
| US3575424A (en) * | 1969-11-28 | 1971-04-20 | Koppers Co Inc | Pressure balanced circumferential seal assembly |
| JPS57149670A (en) * | 1981-01-31 | 1982-09-16 | Rolls Royce | Contactless seal |
-
1988
- 1988-12-05 JP JP1988158316U patent/JPH0517513Y2/ja not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2908516A (en) * | 1954-08-02 | 1959-10-13 | Koppers Co Inc | Circumferential shaft seal |
| US2956824A (en) * | 1957-12-27 | 1960-10-18 | Koppers Co Inc | Vented shaft seal |
| US3575424A (en) * | 1969-11-28 | 1971-04-20 | Koppers Co Inc | Pressure balanced circumferential seal assembly |
| JPS57149670A (en) * | 1981-01-31 | 1982-09-16 | Rolls Royce | Contactless seal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517513Y2 (en) | 1993-05-11 |
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