Device for measuring friction and wear under surrounding high pressure
AssigneeEdward Kuss
InventorsEduard Kuss, Friedhelm Hotte
Life of this patent
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Abstract
A device for performing friction and wear tests inside a closed high-pressure autoclave under additional surrounding high pressure adjustable from the outside, wherein a test element arranged inside the autoclave is rotated by means of a driving shaft passed in a pressure-tight manner through the wall of the autoclave into the latter, a contact pressure in the form of an additional unidirectional load is exerted on the test element by means of a unit arranged inside the autoclave, and both the contact pressure and the torsional moment acting on the test element are determined and indicated outside the autoclave.
Claims18
A device for measuring friction and wear under coexisting surrounding high pressure, comprising:
- a. a high-pressure autoclave including walls defining a chamber,
- b. means for supporting at least one test element in said chamber,
- c. a rotatably mounted drive shaft extending through a wall from the exterior to the interior of said chamber and arranged to rotate said support means in said chamber,
- d. a pressure-tight seal between said drive shaft and said wall,
- e. means for applying fluid pressure in said chamber,
- f. means located in said chamber for exerting contact pressure in the form of a unidirectional load on said test element,
- g. means located in said chamber for detecting the torsional moment applied to said test element and comprising a torsional rod extending between said drive shaft and said support means, a pair of magnetized discs spaced on said torsional rod and a pair of stationary inductive scanning heads positioned within said chamber, and
- h. means outside said chamber for indicating both said contact pressure and said torsional moment as detected by said detecting means.
A device for measuring friction and wear under coexisting surrounding high pressure, comprising:
- a. a high-pressure autoclave including walls defining a chamber,
- b. means for supporting at least one test element in said chamber,
- c. a rotatably mounted drive shaft extending through a wall from the exterior to the interior of said chamber and arranged to rotate said support means in said chamber,
- d. a pressure-tight seal between said drive shaft and said wall,
- e. means for applying fluid pressure in said chamber,
- f. means located in said chamber for exerting contact pressure in the form of a unidirectional load on said test element,
- g. means located in said chamber for detecting the torsional moment applied to said test element and comprising a pair of spaced discs rotatably mounted on said drive shaft, each disc including grooves therein, and a pair of stationary scanning heads, and
- h. means outside said chamber for indicating both said contact pressure and said torsional moment as detected by said detecting means.
A device for measuring friction and wear under coexisting surrounding high pressure, comprising:
- a. a high-pressure autoclave including walls defining a chamber,
- b. means for supporting at least one test element in said chamber,
- c. a rotatably mounted drive shaft extending through a wall from the exterior to the interior of said chamber and arranged to rotate said support means in said chamber,
- d. a pressure-tight elastic sealing ring between said drive shaft and said wall,
- e. means for applying fluid pressure in said chamber,
- f. means located in said chamber for exerting contact pressure in the form of a unidirectional load on said test element,
- g. means located in said chamber for detecting the torsional moment applied to said test element,
- h. means outside said chamber for indicating both said contact pressure and said torsional moment as detected by said detecting means,
- i. a first pressure ring about said drive shaft at the side of said sealing ring facing away from said chamber,
- j. a second pressure ring about said drive shaft at the side of said sealing ring facing towards said chamber,
- k. a collar mounted on said drive shaft at the side of said second pressure ring facing towards said chamber, and
- l. bearing means between said collar and said second pressure ring,
- m. whereby fluid pressure in said chamber presses said collar against said second pressure ring and presses said second pressure ring against said elastic sealing ring in an axial direction sealing said elastic sealing ring against the peripheral surface of said drive shaft.
Dependencies are inferred from the claim text.