US2761639A - Expansion compensating pedestal - Google Patents
Expansion compensating pedestal Download PDFInfo
- Publication number
- US2761639A US2761639A US341511A US34151153A US2761639A US 2761639 A US2761639 A US 2761639A US 341511 A US341511 A US 341511A US 34151153 A US34151153 A US 34151153A US 2761639 A US2761639 A US 2761639A
- Authority
- US
- United States
- Prior art keywords
- pedestal
- support
- arms
- tension member
- expansion compensating
- 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
Links
Images
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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/048—Bearings; Driving means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S248/00—Supports
- Y10S248/901—Support having temperature or pressure responsive feature
Definitions
- the present invention relates to an improved mounting means for heavy machinery which is subject to a great amount of thermal expansion, and particularly to an adjustable level pedestal type mounting for a rotary type regenerative air preheater.
- Figure l is an elevational view of the pedestal type mounting embodying the present invention.
- Figure 2 is an elevation, partly in section as seen from line 2-2 of Figure 1.
- Figure 3 is a plan view, partly insection as seen from line 3-3 of Figure 1.
- Figure 4 is a side elevation of a cylindrical body supported by a plurality of circumferentially spaced support pedestals.
- a bifurcated pedestal 5 rests directly upon the support framework of beams 8 which are of design strength sufiicient to support the entire preheater structure. Spanning the ends of the bifurcates 6 the pedestal 5 is a member comprising two trunnion-like arms 3 projecting outwardly from diametrically opposite sides of a sleeve 12 having a vertically extending bore. Each of the outwardly extending arms 3 rests in a semicylindrical recess 14 formed in an upper end face of each bifurcate 6 of the bifurcated pedestal 5. Fitting over each arm 3 is a retaining cap 16 bolted to the upwardly extending bifurcates 6 of pedestal 5 by paired bolts 18.
- a tension member 2 Passing through the vertically disposed bore in the sleeve 3 is a tension member 2 having its upper end threaded to receive a nut 4 and its lower end drilled and reamed to produce a press fit with a pin 1 which connects paired machinery support arms 7 to the tension member 2.
- the machinery support arms 7 are attached 2,761,639 Patented Sept. 4, 1956 ice to the preheater housing 9 at a plurality of spaced locacations, the number of which is dependent upon the size and weight of the unit to be supported.
- each pedestal Since the machine weight is supported at each pedestal by a tension member 2 of uniform cross section, the portion of the total weight carried by each pedestal may be readily determined by use of a strain gage or extensometer when applied to each tension link.
- a support for a rotary regenerative air preheater having a housing comprised of a plurality of diametrically located support pedestals adapted to be positioned outward of the outer periphery of the housing; each pedestal comprising a bifurcated member having a base portion mounted upon a horizontally disposed support means and a pair of vertical members extended in spaced relation from the ends of said base portion, a metallic sleeve having oppositely extended horizontal arms, means pivotally supporting the arms on the .end faces of said vertical members; cap means on the ends of the vertical members overlying the end portions of the arms; a tension member extended slideably through the sleeve and terminating adjacent the horizontal base portion; a pair of parallel support arms adapted to be attached to the housing; means pivotally connecting said arms to the lower end portion of the tension member, said means having an axis parallel to the axis of the means pivotally supporting the oppositely extended arms whereby the radial arms are supported for movement in a single plane and means longitudinally moveable along the
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
Sept. 4, 1956 E. P. HORN EXPANSION COMPENSATING PEDESTAL Filed March 10. 1953 United States Patent EXPANSION CONIPENSATIN G PEDESTAL Edward P. Horn, Wellsville, N. Y., assignor to The Air Preheater Corporation, New York, N. Y.
Application March 10, 1953, Serial No. 341,511
1 Claim. (Cl. 248-17) The present invention relates to an improved mounting means for heavy machinery which is subject to a great amount of thermal expansion, and particularly to an adjustable level pedestal type mounting for a rotary type regenerative air preheater.
In heat exchangers of the rotary regenerative type where heating gases and relatively cooler air to be heated pass through passages in a rotor on opposite sides of a plane through its vertical axis, the structural steel work of the housing and the housing supports becomes subjected to great strains due to the unequal expansion and contraction of the members being exposed to widely varying temperatures.
It is usually the custom to support an air preheater of the type referred to herein by resting it directly upon a plurality of circumferentially spaced sliding pad type mountings which in turn rest directly upon a supporting framework of steel beams. These sliding mountings have a low coeificient of friction; however, they do require a substantial force to move them out or in over the support beam as the preheater expands or contracts with the changing temperature. In the pedestal type mounting of this invention the force required to slide the preheater mountings out or in is greatly reduced by a novel leverage system more readily understood by reference to the accompanying drawings.
Figure l is an elevational view of the pedestal type mounting embodying the present invention.
Figure 2 is an elevation, partly in section as seen from line 2-2 of Figure 1.
Figure 3 is a plan view, partly insection as seen from line 3-3 of Figure 1.
Figure 4 is a side elevation of a cylindrical body supported by a plurality of circumferentially spaced support pedestals.
In the drawing a bifurcated pedestal 5 rests directly upon the support framework of beams 8 which are of design strength sufiicient to support the entire preheater structure. Spanning the ends of the bifurcates 6 the pedestal 5 is a member comprising two trunnion-like arms 3 projecting outwardly from diametrically opposite sides of a sleeve 12 having a vertically extending bore. Each of the outwardly extending arms 3 rests in a semicylindrical recess 14 formed in an upper end face of each bifurcate 6 of the bifurcated pedestal 5. Fitting over each arm 3 is a retaining cap 16 bolted to the upwardly extending bifurcates 6 of pedestal 5 by paired bolts 18.
Passing through the vertically disposed bore in the sleeve 3 is a tension member 2 having its upper end threaded to receive a nut 4 and its lower end drilled and reamed to produce a press fit with a pin 1 which connects paired machinery support arms 7 to the tension member 2. The machinery support arms 7 are attached 2,761,639 Patented Sept. 4, 1956 ice to the preheater housing 9 at a plurality of spaced locacations, the number of which is dependent upon the size and weight of the unit to be supported.
When installing an adjustable machinery pedestal of this type it is not necessary that the support beams 8 be absolutely level since by the adjustable pedestal of this invention the machine carried may be readily leveled by a simple adjustment, up or down, of the nut 4.
Since the machine weight is supported at each pedestal by a tension member 2 of uniform cross section, the portion of the total weight carried by each pedestal may be readily determined by use of a strain gage or extensometer when applied to each tension link.
In a sliding pad mount of the type commonly used to support heavy machinery, the force required to slide the machinery leg out on its pad support is equal to the weight carried on a leg times the coeflicient of friction.
.In the pedestal type mounting of the type herein described, the force required to move the machinery leg out is greatly reduced, because the tension member 2 acts as a lever with a mechanical advantage equal to the lever length L divided by the radius R of the pin 3. Since friction acts on both pins 1 and 3, the force required would equal twice the weight carried by the pedestal times the coeflicient of friction, times the ratio of R/L (see Figure 2 of drawing). As an example, if the pedestal carried 30,000 pounds, L=15 inch, R=1 inch, and the coefficient of friction=0.10, the force required to move the link would equal 400 pounds. On a sliding pad foot, the force required would equal 30,000X0.10 or 3000 pounds. Varying the length of tension member 2 will produce a corresponding variation in the force required to move the linkage.
What I claim is:
A support for a rotary regenerative air preheater having a housing comprised of a plurality of diametrically located support pedestals adapted to be positioned outward of the outer periphery of the housing; each pedestal comprising a bifurcated member having a base portion mounted upon a horizontally disposed support means and a pair of vertical members extended in spaced relation from the ends of said base portion, a metallic sleeve having oppositely extended horizontal arms, means pivotally supporting the arms on the .end faces of said vertical members; cap means on the ends of the vertical members overlying the end portions of the arms; a tension member extended slideably through the sleeve and terminating adjacent the horizontal base portion; a pair of parallel support arms adapted to be attached to the housing; means pivotally connecting said arms to the lower end portion of the tension member, said means having an axis parallel to the axis of the means pivotally supporting the oppositely extended arms whereby the radial arms are supported for movement in a single plane and means longitudinally moveable along the tension member contacting the upper end faces of the sleeve to properly position the lower portion of said tension member.
References Cited in the file of this patent UNITED STATES PATENTS
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US341511A US2761639A (en) | 1953-03-10 | 1953-03-10 | Expansion compensating pedestal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US341511A US2761639A (en) | 1953-03-10 | 1953-03-10 | Expansion compensating pedestal |
Publications (1)
Publication Number | Publication Date |
---|---|
US2761639A true US2761639A (en) | 1956-09-04 |
Family
ID=23337892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US341511A Expired - Lifetime US2761639A (en) | 1953-03-10 | 1953-03-10 | Expansion compensating pedestal |
Country Status (1)
Country | Link |
---|---|
US (1) | US2761639A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2926810A (en) * | 1956-10-30 | 1960-03-01 | Herrick L Johnston Inc | Suspension system for container for storing liquefied gas |
US3146983A (en) * | 1961-11-08 | 1964-09-01 | Chicago Bridge & Iron Co | Mounting for invertible vessel |
US3937433A (en) * | 1973-01-04 | 1976-02-10 | Brown Boveri-Sulzer Turbomaschinen Aktiengesellschaft | Support arrangements for turbomachines |
US4101288A (en) * | 1977-07-29 | 1978-07-18 | Texaco Inc. | Method and a support assembly for supporting an air ring in a regenerator in a fluid catalytic cracking unit |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US552550A (en) * | 1896-01-07 | Otto w | ||
US1011129A (en) * | 1908-10-30 | 1911-12-05 | S S Hepworth Company | Motor-support. |
US1029622A (en) * | 1912-02-21 | 1912-06-18 | William H Mussey | Suspension means for motor-generators. |
US1455365A (en) * | 1921-04-27 | 1923-05-15 | Charles A Tilt | Automobile engine suspension |
US1794402A (en) * | 1928-10-25 | 1931-03-03 | Firm Of H Krantz | Suspension for centrifugal extractors |
US2504890A (en) * | 1946-10-31 | 1950-04-18 | Standard Railway Equipment Mfg | Car coupler support and positioning device |
US2504889A (en) * | 1946-10-31 | 1950-04-18 | Standard Railway Equipment Mfg | Swing motion emergency coupler support |
-
1953
- 1953-03-10 US US341511A patent/US2761639A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US552550A (en) * | 1896-01-07 | Otto w | ||
US1011129A (en) * | 1908-10-30 | 1911-12-05 | S S Hepworth Company | Motor-support. |
US1029622A (en) * | 1912-02-21 | 1912-06-18 | William H Mussey | Suspension means for motor-generators. |
US1455365A (en) * | 1921-04-27 | 1923-05-15 | Charles A Tilt | Automobile engine suspension |
US1794402A (en) * | 1928-10-25 | 1931-03-03 | Firm Of H Krantz | Suspension for centrifugal extractors |
US2504890A (en) * | 1946-10-31 | 1950-04-18 | Standard Railway Equipment Mfg | Car coupler support and positioning device |
US2504889A (en) * | 1946-10-31 | 1950-04-18 | Standard Railway Equipment Mfg | Swing motion emergency coupler support |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2926810A (en) * | 1956-10-30 | 1960-03-01 | Herrick L Johnston Inc | Suspension system for container for storing liquefied gas |
US3146983A (en) * | 1961-11-08 | 1964-09-01 | Chicago Bridge & Iron Co | Mounting for invertible vessel |
US3937433A (en) * | 1973-01-04 | 1976-02-10 | Brown Boveri-Sulzer Turbomaschinen Aktiengesellschaft | Support arrangements for turbomachines |
US4101288A (en) * | 1977-07-29 | 1978-07-18 | Texaco Inc. | Method and a support assembly for supporting an air ring in a regenerator in a fluid catalytic cracking unit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4171949A (en) | Arrangement for supporting rotary drums | |
US3951108A (en) | Means for supporting a displaceable mass on a stationary frame | |
US3937433A (en) | Support arrangements for turbomachines | |
US2375034A (en) | Apparatus for high temperature tensile testing of materials | |
US2761639A (en) | Expansion compensating pedestal | |
CN106715042B (en) | Positioning unit | |
US4032199A (en) | Apparatus for equalizing radial load on plurality of pivoted bearing pads | |
US3250316A (en) | Regenerative heat exchangers | |
US2756014A (en) | Spring hangers | |
US1814627A (en) | Turbine support | |
US2439035A (en) | Bearing testing machine | |
US2314011A (en) | Scale integrating mechanism | |
US2714536A (en) | Scale bearings | |
US5105626A (en) | Apparatus for measuring tensile and compressive properties of solid materials at cryogenic temperatures | |
JPH0633988A (en) | Constant-load disk spring graduating and suspending device | |
JPH11145025A (en) | Baking oven | |
RU2795385C1 (en) | Device for measuring displacements of notch edges in specimens at elevated temperatures during testing | |
JP3294334B2 (en) | Structural deformation detector | |
US2555273A (en) | Radiation pyrometer | |
US2812410A (en) | Resistor structure | |
US1801206A (en) | Supporting device | |
US3185459A (en) | Device for supporting a rotating body | |
US3606979A (en) | Expansible support means | |
US2929594A (en) | Spring support | |
US3527088A (en) | Engine test mountings |