US1394959A - Shaft-packing - Google Patents
Shaft-packing Download PDFInfo
- Publication number
- US1394959A US1394959A US295980A US29598019A US1394959A US 1394959 A US1394959 A US 1394959A US 295980 A US295980 A US 295980A US 29598019 A US29598019 A US 29598019A US 1394959 A US1394959 A US 1394959A
- Authority
- US
- United States
- Prior art keywords
- shaft
- packing
- impeller
- wall
- side plates
- 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 - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/42—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by centrifugal force
Definitions
- Such packings are used, for example, in connection with rotating shafts to prevent leakage between a shaft'andan adjacent wall through which it passes, one well-known application being found in connection with elastic fluid turbines.
- the invention relates more particularly to packings of the liquid seal type and has for its object to provide an improved structure in packings of this character.
- Figure 1 is a longitudinal radial sectional view of a packing embodying my invention
- Fig. 2 is a section taken on line 22
- Figs. 3 and 4 are views, similar to those of Figs. 1 and 2 respectively, showing another embodiment of my invention.
- FIGs. 1 and 2) 5 indicates a rotating shaft and 6 a casing having an opening 7 through which the shaft passes and between which and the shaft it is desired to'prevent leakage.
- a housing oomprising an inner end wall 8, an outer end wall 9. and an annular side wall 10, preferably formed integral with walls 8 and 9.
- one-half of wall 10 is formed integral with end wall 8 and the other half is formed integral with wall 9.
- Walls Sand 9 are fastened to casing 6 by means of a flanged ring 11 fastened to casing 6 by bolts 11".
- Carried by shaft 5 inside the housing is an impeller 12 having on its opposite sides suitable vanes 13 which are closed by side plates let.
- Impeller 12 has a peripheral rim 16 of the same width as vanes 13 and between rim 16 and the inner wall of the housing is a slight clearance forming annular passages 17 and 18.
- annular wall 10 surrounding impeller 12 is a continuous groove 19, and communigroove 19 so there is a complete ring of liquid around the periphery of the impeller.
- the outer periphery of side plates 11. are cut away to form annular chambers 22 to which impeller 12 when operating delivers liquid, and chambers 22 are in communication with groove 19 through passages 17 and 18 and they are in communication with the spaces between side plates 14 and end walls 8 and 9 through annular clearance spaces 23 and 2-1.
- Impeller 12 is provided with hub extensions 27 on which are cut threads 28 which run in directions to pump any liquid which falls on the shaft back to the impeller. thread will be left hand and the other right hand.
- sealing liquid such as water
- the impeller vanes 13 act as a pump taking water at their radially inner or suction ends and delivering it at their radially outer or discharge ends.
- the water received at the inner ends of the vanes is that which is discharged from the outer ends and flows to the inner ends through the path between side plates 11 walls 8 and 9. This flow, which is in the nature of local circulation, will be. greater on the low pressure side of the packing than it is on the high pressure side of the packing.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Devices (AREA)
Description
. J. WILKINSON.
SH AAAAAAAAAA G. APPLICATION FILED MAY 9. m
9' 1,394,959, Patented Oct. 25, 1921a m 2 SHEETSSHEET l.
Inventor":
JamesWilKinson,
l-lisAtt orneg.
SHAFT P AAA A Patented Oct. 25, 1921..
' 2 EEEEEEEEEEEE 2.
a UNITED sTATEs PATENT. OFFICE.
JAMES WILKINSON, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
' SHAFT-PACKING.
Specification of Letters Patent.
Application filed May 9, 1919. Serial No. 295,980.
such as are used to prevent leakage of fluid between two relatively rotating'parts. Such packings are used, for example, in connection with rotating shafts to prevent leakage between a shaft'andan adjacent wall through which it passes, one well-known application being found in connection with elastic fluid turbines.
The invention relates more particularly to packings of the liquid seal type and has for its object to provide an improved structure in packings of this character.
For a consideration of what I believe to to be novel and my invention attention is directed to the accompanying description and the claims appended thereto.
In the drawing, Figure 1 is a longitudinal radial sectional view of a packing embodying my invention; Fig. 2 is a section taken on line 22, Fig. 1, and Figs. 3 and 4 are views, similar to those of Figs. 1 and 2 respectively, showing another embodiment of my invention.
Referring to the drawing, (Figs. 1 and 2) 5 indicates a rotating shaft and 6 a casing having an opening 7 through which the shaft passes and between which and the shaft it is desired to'prevent leakage. Bolted to the casing 6 at opening 7 is a housingoomprising an inner end wall 8, an outer end wall 9. and an annular side wall 10, preferably formed integral with walls 8 and 9. In the present instance one-half of wall 10 is formed integral with end wall 8 and the other half is formed integral with wall 9. Walls Sand 9 are fastened to casing 6 by means of a flanged ring 11 fastened to casing 6 by bolts 11". Carried by shaft 5 inside the housing is an impeller 12 having on its opposite sides suitable vanes 13 which are closed by side plates let. Side plates 1% are fastened to the vanes by means of rivets'15. Impeller 12 has a peripheral rim 16 of the same width as vanes 13 and between rim 16 and the inner wall of the housing is a slight clearance forming annular passages 17 and 18. In annular wall 10 surrounding impeller 12 is a continuous groove 19, and communigroove 19 so there is a complete ring of liquid around the periphery of the impeller. The outer periphery of side plates 11. are cut away to form annular chambers 22 to which impeller 12 when operating delivers liquid, and chambers 22 are in communication with groove 19 through passages 17 and 18 and they are in communication with the spaces between side plates 14 and end walls 8 and 9 through annular clearance spaces 23 and 2-1. There is considerable clearance between side plates 11 and end walls 8 and 9 and at their radially inner portions such side plates and end walls are provided with interleaving annular rings 25 and 26 respectively, thus forming a labyrinth packing. Impeller 12 is provided with hub extensions 27 on which are cut threads 28 which run in directions to pump any liquid which falls on the shaft back to the impeller. thread will be left hand and the other right hand. i
In operation, sealing liquid, such as water,
is supplied through pipe 21 to annular groove 19 and from here liquid will {be fed to the impeller which acts by centrifugal force to establish a liquid seal to prevent leakage. Assuming for example. that the pressure on the left hand side of the packing is greater than that on the right hand side, then a liquid seal will be estalr lished having a stati head of a height in dicated 'at (2 depending among other things on the difference in pressure on the two sides of the packing.
The impeller vanes 13 act as a pump taking water at their radially inner or suction ends and delivering it at their radially outer or discharge ends. The water received at the inner ends of the vanes is that which is discharged from the outer ends and flows to the inner ends through the path between side plates 11 walls 8 and 9. This flow, which is in the nature of local circulation, will be. greater on the low pressure side of the packing than it is on the high pressure side of the packing.
After the liquid seal is established, how
For this purpose one
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US295980A US1394959A (en) | 1919-05-09 | 1919-05-09 | Shaft-packing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US295980A US1394959A (en) | 1919-05-09 | 1919-05-09 | Shaft-packing |
Publications (1)
Publication Number | Publication Date |
---|---|
US1394959A true US1394959A (en) | 1921-10-25 |
Family
ID=23140060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US295980A Expired - Lifetime US1394959A (en) | 1919-05-09 | 1919-05-09 | Shaft-packing |
Country Status (1)
Country | Link |
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US (1) | US1394959A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE848131C (en) * | 1940-07-13 | 1952-09-01 | Henschel & Sohn G M B H | Sealing for rotating shafts or housings against stationary bodies |
US3131641A (en) * | 1962-08-17 | 1964-05-05 | United Aircraft Corp | Dynamic seal improvement |
US3259391A (en) * | 1962-06-13 | 1966-07-05 | Ass Elect Ind | Inlet glands for liquid supply to rotors |
US3519277A (en) * | 1968-01-18 | 1970-07-07 | Pneumo Dynamics Corp | Fan seal |
US3788652A (en) * | 1971-06-03 | 1974-01-29 | Rateau Soc | Sealing devices for rotating shafts |
US4685684A (en) * | 1986-02-14 | 1987-08-11 | Ballard Michael J | Dynamic seal |
US5636848A (en) * | 1995-02-22 | 1997-06-10 | Alliedsignal Inc. | Oil seal for a high speed rotating shaft |
US20040046323A1 (en) * | 2002-09-10 | 2004-03-11 | Mccutchan Sean | Gas film hydraulic shaft seal |
US20040080113A1 (en) * | 2002-07-02 | 2004-04-29 | Aktiebolaget Skf | Seal arrangement |
US10677247B2 (en) | 2016-01-07 | 2020-06-09 | Stein Seal Company | Slurry seal assembly |
-
1919
- 1919-05-09 US US295980A patent/US1394959A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE848131C (en) * | 1940-07-13 | 1952-09-01 | Henschel & Sohn G M B H | Sealing for rotating shafts or housings against stationary bodies |
US3259391A (en) * | 1962-06-13 | 1966-07-05 | Ass Elect Ind | Inlet glands for liquid supply to rotors |
US3131641A (en) * | 1962-08-17 | 1964-05-05 | United Aircraft Corp | Dynamic seal improvement |
US3519277A (en) * | 1968-01-18 | 1970-07-07 | Pneumo Dynamics Corp | Fan seal |
US3788652A (en) * | 1971-06-03 | 1974-01-29 | Rateau Soc | Sealing devices for rotating shafts |
US4685684A (en) * | 1986-02-14 | 1987-08-11 | Ballard Michael J | Dynamic seal |
US5636848A (en) * | 1995-02-22 | 1997-06-10 | Alliedsignal Inc. | Oil seal for a high speed rotating shaft |
US20040080113A1 (en) * | 2002-07-02 | 2004-04-29 | Aktiebolaget Skf | Seal arrangement |
US20040046323A1 (en) * | 2002-09-10 | 2004-03-11 | Mccutchan Sean | Gas film hydraulic shaft seal |
US6860483B2 (en) * | 2002-09-10 | 2005-03-01 | United Technologies Corporation | Gas film hydraulic shaft seal |
US10677247B2 (en) | 2016-01-07 | 2020-06-09 | Stein Seal Company | Slurry seal assembly |
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