US3753449A - Turbine inlet valve structure - Google Patents

Turbine inlet valve structure Download PDF

Info

Publication number
US3753449A
US3753449A US00259701A US3753449DA US3753449A US 3753449 A US3753449 A US 3753449A US 00259701 A US00259701 A US 00259701A US 3753449D A US3753449D A US 3753449DA US 3753449 A US3753449 A US 3753449A
Authority
US
United States
Prior art keywords
valve
lifting bar
bar means
lifting
stems
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
Application number
US00259701A
Other languages
English (en)
Inventor
H Nelson
W Straslicka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Elliott Turbomachinery Co Inc
Original Assignee
Carrier Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carrier Corp filed Critical Carrier Corp
Application granted granted Critical
Publication of US3753449A publication Critical patent/US3753449A/en
Assigned to ELLIOTT TURBOMACHINERY CO., INC. reassignment ELLIOTT TURBOMACHINERY CO., INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CARRIER CORPORATION, A CORP OF DEL.
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: ELLIOT TURBOMACHINERY CO., INC.
Assigned to CONTINENTAL BANK N.A. reassignment CONTINENTAL BANK N.A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELLIOTT TURBOMACHINERY CO., INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/18—Final actuators arranged in stator parts varying effective number of nozzles or guide conduits, e.g. sequentially operable valves for steam turbines
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86928—Sequentially progressive opening or closing of plural valves
    • Y10T137/87016—Lost motion
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/8741—With common operator

Definitions

  • ABSTRACT Fluid flow control valves arranged in the valve chest of an elastic fluid turbine are formed with stems noncircular in cross section having slidable engagement with noncircular apertures formed in the valve lifting bar June 5, 1972 Appl. No.: 259,701
  • valves are Prevented from Pinning on 630 their axes.
  • the valve stems are formed with enlargements integrally united with the stems.
  • the bar lifting rods are formed with enlargements integrally united therewith, the rod enlargements being spaced apart axi- Field or's'i'iiIIIIIIIIII' References Cited UNITED STATES PATENTS ally a distance equal to the vertical dimension of the lifting bar.
  • valve failure occurs on occasion.
  • the valve failure develops due to the magnitude of vibration set up in the valve structure by the high velocity flow of fluid through the valve chest during operation of the turbine and also due to the spinning of the valves about their axes.
  • valve lifting bar was not restrained against vertical movement on the bar lifting rods, in that arrangement the bar vibrated relative to the lifting bar.
  • the lower or inner ends of the lifting rods were threaded for the reception of nuts for engagement with the lifting bar. In that arrangement, the threaded portions of the lifting rods developed failure.
  • This invention is directed to an admission valve structure for fluid turbines wherein the lifting bar is of twopiece construction. The pieces being clamped together in abutting relation, the abutting surfaces extending in a vertical plane.
  • the lifting bar structure is formed with a linear series of noncircular apertures, preferably of rectangular form, and the valve stems are of cross sectional form comparable to the apertures in the lifting bar structure, whereby the valves are prevented from rotation.
  • the lifting rods are formed with axially spaced apart enlargements which are integrally united with the rods. The valve stems and the lifting rods are inserted in the apertures of the lifting bar structure and the parts thereof are clamped together by fastening means, such as screws.
  • FIG. I is a vertical sectional view of the valve chest with parts of the valve actuating mechanism shown in elevation, the view is taken on a line corresponding to line 1-1, FIG. 2;
  • FIG. 2 is a view taken on line 22, FIG. 1;
  • FIG. 3 is a view in perspective of one part of the valve lifting bar structure
  • FIG. 4 is a view in perspective of the other mating part of the valve lifting structure
  • FIG. 5 is a view taken on line 5-5, FIG. 1;
  • FIG. 6 is a view in perspective of one of the valves.
  • FIG. 7 is a view in perspective of the lower portion of one of the lifting rods.
  • I0 designates a portion of the turbine casing having a surface 11 forming the bottom wall 0F the valve chest 12.
  • the chest 12 is fixedly secured in fluid type relation to the casing 10 as by screws 13.
  • the bottom wall 11 of the valve chest is formed with a plurality of fluid passages l4I7.
  • a valve seat 20 is positioned in each of the passages 14-17. The fluid passages and the valve seats are arranged in a linear series.
  • the top wall 23 of the valve chest is provided with guide bushings 25 in which sleeves 26 are mounted.
  • Lifting rods 27 are slidably mounted in the sleeves 26 which may be replaced when they become worn.
  • the upper ends of the rods 27 are threaded into rod ends 30, connected to actuating arms 31 pivotally mounted at 32 on supports 33, 34.
  • the rod ends 30 are pivotally connected to the arms 31 by links 35.
  • the inner ends of the lifting rods 27 are connected to a lifting bar structure 40.
  • the bar structure 40 consists of two mating parts 41, 43, FIGS. 3 and 4. These parts are of elongated configuration and are clamped together by screws 44 extending through apertures 45 formed in the bar part 43 and threaded into apertures 46 formed in the part 4!.
  • the bar structure 40 is formed with vertically disposed apertures, each aperture being arranged in axial registration with a valve seat 20.
  • the lifting bar part 41 is formed with recesses 50, rectangular in cross section.
  • a valve 53 is provided for each of the valve seats 20.
  • Each valve is formed with an integral stem 54 having a cross sectional form comparable to the cross sectional form of the apertures 50. As shown in FIG. 6, the stem 54 is rectangular in cross section and dimension for a sliding fit in the apertures 50 of like cross sectional form.
  • valve stems 54 are provided with enlargements 57 which are integrally united with the stems.
  • the valve structures may be formed integrally by drop forging, o'r machined from a workpiece, or the enlargements 57 may be joined to the stems as by welding.
  • the spacing of the enlargements 57 from the valves 53 varies from one valve structure to another as is conventional practice, see FIG. 1, whereby the valves are lifted sequentially from the seats 20 upon upward movement of bar 40.
  • the lower or inner portions of the lifting rods 27 are formed with enlargements 60, 61, FIG. 7. These enlargements are also integrally united with the lifting rods and are spaced apart axially a distance comparable to the vertical dimension of the lifting bar.
  • the portion 63 of the lifting rods intermediate the enlargements 60, 61 are of circular cross section.
  • the diameter of the rod portions 63 are a close fit in the recesses 50, and the enlargements 60, 61 are spaced apart axially such that they are situated in close proximity to the upper and lower sides of the bar structure 40.
  • the portion 63 of the lifting bars are placed in a pair of the recesses 50 as illustrated in FIG. I.
  • the valve stems 54 are placed in the remaining recesses 50.
  • the mating part 43 of the valve structure is then positioned on the part 41, overlying the open sides of the recesses 50, the part 43 is fixedly secured to the part 41 by the screws 44.
  • the part 41 may be formed with ribbed portions 67, cooperable with a slot formed in the abutting surface of the part 43, and having upper and lower side walls 68, 69. With that arrangement vertical forces are not transmitted directly to the fastening screws 44, and the parts 41, 43 are maintained in proper alignment.
  • the arms 31 are joined, rearwardly of the pivot 32, by a vertically disposed web 71, the web 71 extends laterally from the support 33 and is integrally connected to upper and lower rearwardly extending webs 72, 73.
  • the portions of the web 71, 72, 73 extending laterally from the support 33 are provided or formed with a bifurcated boss 75.
  • a rod end 76 is pivotally connected to the boss 75 and is adjustably connected to the upper end of the actuating rod 77.
  • Vertical reciprocation is imparted to the rod 77 by a servomotor device 80 attached to the turbine casing. With this arrangement, vertical reciprocation is transmitted to the lifting rods 27 to move the lifting bar structure 40 vertically for movement of the valves 53 into and out of engagement with the seats 20.
  • vibration in the lifting bar structure, the valves and the lifting rods is reduced to a negligible amount and fracture of the parts is eliminated.
  • a fluid admission valve structure for elastic fluid turbines comprising a valve chest having a top wall and bottom wall, said bottom wall being formed with a linear series of vertically disposed passages, a valve seat in each of said passages, a valve lifting bar means extending above said series of passages, said lifting bar means being formed of two parts, fastener means detachably securing said parts together, said lifting bar means being formed with a noncircular aperture axially aligned with each of said passages, a valve cooperable with each of said seats, each of said valves having an integral stern slidably mounted in an apeture in said lifting bar means, said stems having a noncircular cross sectional form comparable to the noncircular form of said apertures, each of said stems being formed with an enlarged head portion integrally united thereto, said head portions being engageable by said lifting bar means upon upward movement thereof, a pair of bar lifting rods fixed to said lifting bar means and being slidably mounted in the top wall of said valve chest, said rods extending out
  • valve structure as set forth in claim 1 wherein the stems of said valves are insertable in and removable from said apertures upon separation of the parts of said valve lifting bar means.
  • valve structure as set forth in claim 1 wherein said apertures in said valve lifting bar means are rectangular in cross sectional form.
  • valve lifting rods are fonned with enlargements integrally united thereto and spaced apart axially a distance comparable to the vertical dimension of said lifting bar means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Control Of Turbines (AREA)
US00259701A 1972-06-05 1972-06-05 Turbine inlet valve structure Expired - Lifetime US3753449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25970172A 1972-06-05 1972-06-05

Publications (1)

Publication Number Publication Date
US3753449A true US3753449A (en) 1973-08-21

Family

ID=22986002

Family Applications (1)

Application Number Title Priority Date Filing Date
US00259701A Expired - Lifetime US3753449A (en) 1972-06-05 1972-06-05 Turbine inlet valve structure

Country Status (10)

Country Link
US (1) US3753449A (ja)
JP (1) JPS5312644B2 (ja)
CA (1) CA990614A (ja)
CH (1) CH547432A (ja)
DE (1) DE2325297C3 (ja)
FR (1) FR2188675A5 (ja)
GB (1) GB1374736A (ja)
IT (1) IT987271B (ja)
NL (1) NL153988B (ja)
SE (1) SE378646B (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276237A (en) * 1979-08-01 1981-06-30 Standard-Thomson Corporation Carburetor air control device
US4456032A (en) * 1982-01-18 1984-06-26 Elliott Turbomachinery Company, Inc. Fluid admission valve structure
US4842017A (en) * 1987-06-03 1989-06-27 Rolls-Royce Plc Fluid flow control apparatus
IT201800006560A1 (it) * 2018-06-21 2019-12-21 Shutter for a control valve assembly of a steam turbine / otturatore per un gruppo valvola di controllo di una turbina a vapore

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066532A (en) * 1975-06-30 1978-01-03 Petroleo Brasileiro S.A. Petrobras Process for producing premium coke and aromatic residues for the manufacture of carbon black
JPS5610626A (en) * 1979-07-04 1981-02-03 Sanyo Electric Co Ltd Safety combustion system
JPS58169356U (ja) * 1982-05-06 1983-11-11 リンナイ株式会社 燃焼器の燃焼安全装置
JPS62206192A (ja) * 1986-03-05 1987-09-10 長谷川　徳三 穿孔の清掃器
JPS62192053U (ja) * 1986-05-22 1987-12-07
JPS63210187A (ja) * 1987-02-27 1988-08-31 Nippon Steel Chem Co Ltd 石炭系針状ピツチコ−クスの製造法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385537A (en) * 1942-12-17 1945-09-25 Westinghouse Electric Corp Valve operating mechanism
US3625241A (en) * 1969-10-16 1971-12-07 Carrier Corp Steam admission valve structure for steam turbines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385537A (en) * 1942-12-17 1945-09-25 Westinghouse Electric Corp Valve operating mechanism
US3625241A (en) * 1969-10-16 1971-12-07 Carrier Corp Steam admission valve structure for steam turbines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276237A (en) * 1979-08-01 1981-06-30 Standard-Thomson Corporation Carburetor air control device
US4456032A (en) * 1982-01-18 1984-06-26 Elliott Turbomachinery Company, Inc. Fluid admission valve structure
US4842017A (en) * 1987-06-03 1989-06-27 Rolls-Royce Plc Fluid flow control apparatus
IT201800006560A1 (it) * 2018-06-21 2019-12-21 Shutter for a control valve assembly of a steam turbine / otturatore per un gruppo valvola di controllo di una turbina a vapore
EP3587745A1 (en) * 2018-06-21 2020-01-01 Nuovo Pignone Technologie S.r.l. Shutter for a control valve assembly of a steam turbine and corresponding control valve assembly

Also Published As

Publication number Publication date
DE2325297C3 (de) 1975-09-04
FR2188675A5 (ja) 1974-01-18
CH547432A (de) 1974-03-29
JPS5312644B2 (ja) 1978-05-02
JPS4949004A (ja) 1974-05-13
NL153988B (nl) 1977-07-15
DE2325297A1 (de) 1973-12-20
CA990614A (en) 1976-06-08
IT987271B (it) 1975-02-20
NL7307384A (ja) 1973-12-07
DE2325297B2 (de) 1975-01-23
SE378646B (ja) 1975-09-08
GB1374736A (en) 1974-11-20
AU5532173A (en) 1974-11-07

Similar Documents

Publication Publication Date Title
US3753449A (en) Turbine inlet valve structure
CA1044558A (en) Miniature four-way valve
US3705599A (en) Universally-mountable gas service regulator
US2576848A (en) Obturator or valve
CA2865752C (en) Flow straightening seat ring and control valve having flow straightening seat ring
JPH08233150A (ja) 主蒸気隔離弁
CN104137015A (zh) 控制阀
US1606426A (en) Air valve for hoists
US2646820A (en) Control valve
CA1075126A (en) Balanced valve with pressure sensing means
FR2363658A1 (fr) Peigne de guidage d'air pour metier a tisser a jet d'air
US10502241B2 (en) Linear actuator
US2998026A (en) Differential pressure air valve
US2928421A (en) Valves
IT201800010409A1 (it) Macchina per curvare un pezzo allungato senza formazione di grinze
RU192204U1 (ru) Клапан для управления давлением в гидравлических устройствах
CN209875964U (zh) 一种微量喷水调节阀
US1200491A (en) Valve.
JPS605162Y2 (ja) 複動電磁弁
CN215445185U (zh) 气动阀门
US3580691A (en) Vibration absorbing throttle lift bar
CN208457301U (zh) 一种新型管道阀门快速调节装置
IL114903A (en) Controller from a switch with a three-way valve
SU878971A1 (ru) Многоканальный регулирующий клапан
US845402A (en) Hydraulic ram.

Legal Events

Date Code Title Description
AS Assignment

Owner name: ELLIOTT TURBOMACHINERY CO., INC., A CORP OF DELAWA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO LICENSE RECITED.;ASSIGNOR:CARRIER CORPORATION, A CORP OF DEL.;REEL/FRAME:004499/0922

Effective date: 19851220

AS Assignment

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE,ILLINOIS

Free format text: LICENSE;ASSIGNOR:ELLIOT TURBOMACHINERY CO., INC.;REEL/FRAME:004940/0562

Effective date: 19871109

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ONE FIRST NAT

Free format text: LICENSE;ASSIGNOR:ELLIOT TURBOMACHINERY CO., INC.;REEL/FRAME:004940/0562

Effective date: 19871109

AS Assignment

Owner name: CONTINENTAL BANK N.A.

Free format text: SECURITY INTEREST;ASSIGNOR:ELLIOTT TURBOMACHINERY CO., INC.;REEL/FRAME:005258/0092

Effective date: 19891212