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
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/021—Check valves with guided rigid valve members the valve member being a movable body around which the medium flows when the valve is open
• • 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
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
  • F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
• • 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
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K2200/00—Details of valves
  • F16K2200/30—Spring arrangements
  • F16K2200/305—Constructional features of springs
  • F16K2200/3051—Generally flat springs
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
  • Y10T137/785—With retarder or dashpot
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
  • Y10T137/7854—In couplings for coaxial conduits, e.g., drill pipe check valves
  • Y10T137/7856—Valve seat formed on or carried by a coupling element
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
  • Y10T137/7904—Reciprocating valves
  • Y10T137/7922—Spring biased
  • Y10T137/7929—Spring coaxial with valve

Definitions

• the subject invention is directed to
• the prior art check valve includes
• valve housing that is formed or machined to define a valve chamber.
• valve housing further is formed or machined to include an inlet extending from
• valve chamber to a second external location.
• the valving element can move away from the valve seat to
• valve that provides secure sealing of the inlet while still permitting a desirably
• the subject invention is directed to a check valve having a valve
• housing formed from a first housing component and a second housing
• the first housing component is configured to define an inlet to the
• the second housing component is
• the first and second housing components are mateable with one
• housing component and second housing component may be configured to
• the component may be welded to the inner telescoped housing component.
• weldment securely seals the valve chamber from the ambient environment
• Portions of the second housing component may be formed or
• the check valve of the subject invention further includes a
• the valving element is configured to sealingly engage the valve seat that surrounds the inlet to the valve chamber for substantially preventing a flow
• the valving element may include a
• the valving element defines an outer periphery that is dimensioned
• valving element is spaced from its sealing engagement with the valve seat.
• valve chamber may include a substantially cylindrically
• the valving element may have a cylindrically
• valve housing and/or the valving element may be configured
• the check valve of the subject invention further includes a
• the spring is configured and disposed for urging the valving
• the disk may be a substantially planar disk that is stamped, machined and/or formed to
• the legs of the spring preferably extend in non-radially directions, and may include portions that extend
• the legs of the disk-like spring preferably are non-symmetrically
• the spring may include two
• valve housing This configuration results in an asymmetrical or non-uniform
• Central portions of the disk-like spring may be connected to the valving element, and outer portions of the disk-like spring may be connected
• central portions of the spring may be
• outer portions of the spring may be secured between the first and second
• the spring urges the valving element into a normally
• valve seat
• movement of the valving element in the opening direction may extend until the valving element engages portions of the second housing component
• housing component prevent a complete blockage of the outlet and ensure a
• the asymmetrical configuration of the spring may cause one side of
• FIG. 1 is an exploded longitudinal cross-sectional view of a check
• FIG. 2 is a longitudinal cross-sectional view of the check valve in
• FIG. 3 is an end elevational view of the first housing component
• FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 3.
• FIG. 5 is an end elevational view of the second housing
• FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5.
• FIG. 7 is an end elevational view of the poppet as viewed from
• FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7.
• FIG. 9 is an end elevational view of the backstop.
• FIG. 10 is a cross-sectional view as taken along line 10-10 in
• FIG. 11 is a plan view of the spring.
• a check valve in accordance with the subject invention is
• FIGS. 1 and 2 identified generally by the numeral 10 in FIGS. 1 and 2. As shown most clearly
• the check valve 10 includes a valve housing 12 which is formed from
• first housing component 14 a first housing component 14 and a second housing component 16.
• the first housing component 14 as shown most clearly in FIG.
• first chamber recess 20 includes a valve seat 22 aligned substantially
• a first cylindrical chamber wall 24 is
• a stop wall 26 extends radially outwardly from the end of the first cylindrical
• the stop wall 26 will define a
• a cylindrical engagement wall 28 extends from the
• the cylindrical engagement wall 28 defines an inside diameter "b" which
• the second housing component 16 also is of generally stepped
• chamber wall 32 has an annular end face 34 that is substantially planar and aligned substantially orthogonally to the axis of the second housing component
• the cylindrical chamber wall 32 defines an inside diameter "a" substantially
• cylindrical chamber wall 32 furthermore
• first housing component 14 to define a substantially enclosed chamber
• the second housing component 16 further includes an outlet 38
• stop walls 42 separated from one another by stop walls 42.
• channels 40 define a circular locus of points having a diameter "c" as shown in
• the check valve 10 further includes a valving element 44 formed
• the poppet 46 is a substantially disk-shaped element having a substantially planar sealing
• annular groove 52 having a slightly dovetailed
• the seal ring 48 formed from a resilient substantially inert
• Portions of the poppet 46 opposite the seal face 50 include a
• backstop support 56 extends axially from the spring support face 54.
• backstop support 56 includes a generally concave end 58 to facilitate a
• the check valve 10 further includes a disk spring 60 formed from
• Disk spring 60 may be formed from an Elgiloy metallic alloy having a thickness of approximately 0.007 inch. Disk spring 60 is substantially circular and includes
• support rim 62 defines an outside diameter "e" which is greater than the inside
• annular outer support rim 62 of the annular outer support rim 62 of the annular outer support rim 62
• the annular inner support rim 64 of the disk spring 60 includes
• the annular inner support rim 64 further includes an outside
• the spring legs 66 extend substantially helically between the
• each spring leg 66 includes a connecting portion that extends from the outer
• annular support 62 at an angle of approximately 30° to a radius of the spring
• a generally circumferentially extending portion extends between these
• each spring leg 66 This generally helical orientation of each spring leg
• two spring legs 60 are spaced from one another by approximately 120°.
• the check valve 10 further includes a generally annular backstop
• the backstop 70 further includes an outside
• the check valve 10 is assembled by initially placing the central
• the subassembly comprising the poppet 46, the seal ring 48, the spring 60 and the backstop 70 then are positioned in the first chamber recess
• poppet 46 is positioned on the valve seat 22 of the first chamber recess 20.
• the telescoped first and second housing components 14 and 16 are identical to The telescoped first and second housing components 14 and 16
• weldment 72 are secured to one another by a weldment 72 at the location indicated in FIG.
• weldment 72 is disposed at the interface of the end 29
• the weldment 72 will be spaced from the gas flow path, and the heat
• valve chamber is securely sealed from
• the spring 60 bias the spring into a normally closed position.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Check Valves (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=22232023

Family Applications (1)

Country Status (5)

Cited By (5)

Families Citing this family (23)

Citations (3)

Family Cites Families (2)

• 1999
  • 1999-06-10 WO PCT/US1999/013104 patent/WO2000003167A1/en not_active Ceased
  • 1999-06-10 US US09/623,099 patent/US6401749B1/en not_active Expired - Lifetime
  • 1999-06-10 JP JP2000559367A patent/JP4328022B2/ja not_active Expired - Lifetime
  • 1999-06-10 EP EP99931784A patent/EP1093555B1/en not_active Expired - Lifetime
  • 1999-06-10 DE DE69906740T patent/DE69906740T2/de not_active Expired - Lifetime

Patent Citations (3)

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