US3878770A - Clearance pocket assembly - Google Patents

Clearance pocket assembly Download PDF

Info

Publication number
US3878770A
US3878770A US379498A US37949873A US3878770A US 3878770 A US3878770 A US 3878770A US 379498 A US379498 A US 379498A US 37949873 A US37949873 A US 37949873A US 3878770 A US3878770 A US 3878770A
Authority
US
United States
Prior art keywords
shaft
passageway
clearance
cylinder
outer head
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
US379498A
Other languages
English (en)
Inventor
Robert Ashton
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Priority to US379498A priority Critical patent/US3878770A/en
Priority to CA202,436A priority patent/CA1026722A/en
Priority to GB2765574A priority patent/GB1451852A/en
Priority to DE2432327A priority patent/DE2432327A1/de
Priority to IT25118/74A priority patent/IT1017123B/it
Priority to FR7424737A priority patent/FR2238063B1/fr
Application granted granted Critical
Publication of US3878770A publication Critical patent/US3878770A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers

Definitions

  • ABSTRACT An assembly that converts a standard cylinder outer head, having a clearance passageway formed therewithin, to a fixed volume clearance pocket outer head.
  • the assembly comprises a gate valve having cooperating butterfly-shaped plates or elements operative, across the innermost portion of the clearance passageway of a standard cylinder outer head, by a rotatable valve shaft-engaging collar disposed external of the passageway.
  • This invention pertains to clearance pocket assemblies for altering a cylinder of a compressor, or the like, to some fixed volume clearance, and in particular to a clearance pocket assembly for converting a standard cylinder outer head to a fixed volume clearance pocket outer head.
  • Another object of this invention is to set forth a clearance pocket assembly, for replaceable and operative installation thereof within the clearance passageway of a standard, cylinder outer head of a compressor or the like, comprising, valving means for insertion thereof into the clearance passageway, said valving means being selectively operative for opening and closing the clearance passageway to the admittance thereinto of fluid; means coupled to said valving means for replaceably fastening the latter to the outer head; and means coupled to said valving means for operating the latter.
  • a feature of this invention comprises an assembly that converts a standard cylinder outer head to a fixed volume clearance pocket outer head.
  • the assembly comprises a gate valve having cooperating butterflyshaped plates or valve elements operative, across the innermost portion of the clearance passageway of a standard cylinder outer head, by a rotatable valve shaft-engaging collar disposed external of the passageway.
  • FIG. 1 is a cross-sectional view of a priorart standard cylinder outer head, with a plug secured in the clearance passageway;
  • FIG. 2 is an enlarged cross-sectional view of the standard cylinder outer head of FIG. 1 showing an embodiment of the novel clearance pocket assembly replaceably fixed therewithin, the view taken along section 2-2 of FIG. 3;
  • FIG. 3 is an end view of the cylinder outer head and clearance pocket assembly of FIG. 2;
  • FIG. 4 is an enlarged, fragmentary view of the valve shaft sealing and keying arrangement
  • FIG. 5 is an enlarged plan view of the shaft nut and locking tab arrangement, with the stress-relieving set screw shown in cross-section and
  • FIG. 6 is an isometric, exploded view of the valve elements and shaft, the view taken from the left side of FIG. 2, and being enlarged over the scale of FIG. 2.
  • the assembly 10 employs a gate valve 12, having cooperating butterfly-shaped valve elements which is lubricated by the atomized mist in the cylinder 14 of a compressor, for instance.
  • Peripheral sealing is dynamic, arising from an orifice choke effect.
  • the assembly valve shaft 20 has O-ring seals 22 thereabout, within an end cover 24 bolted to head 18.
  • valve 12 is opened or closed, selectively. As shown in FIG. 2, the valve is in a closed position.
  • Adjustment of tension in the shaft 20, to prevent valve chatter. is accomplished by means of a threadedly engaged shaft nut 36. Shaft nut 36 is tightened onto the threaded end of the shaft 20, approximately to an optimum torque valve. Then an adjustable, notched locking tab 38 is used to secure the nut 36 against vibrationinduced loosening.
  • Tab 38 (FIG. 5) has an aperture bounded by notches 39 which in number are twice as many as the fiat-junctures of nut 36, and has a pair of fastener holes 38' formed therein. Tab 38 is placed on and about nut 36 so that a hole 38' is in near proximity to a corresponding tapped hole 38" in collar 30.
  • the shaft collar 30 has an arcuate slot 42 which receives a cap screw 44. This is a safety feature which prevents the shaft collar 30 and shaft 20, etc., from blowing out of the assembly 10 should the shaft 20 break for any reason. So also, this screw 44 locks the assembly 10 open or closed when tightened. A doweltype handle 45 fixed to the collar, manipulates the latter.
  • the amount of fixed clearance can be adjusted by means of adding, or reducing the length of, clearance pocketsplit spacers 46 which are bolted to the end cover 24.
  • Affixed volume clearance pocket assembly for replaceable and operative installation thereof within the clearance passageway of a standard, outer head of the cylinder of a compressor or the like, for varying the volume of the cylinder, the latter having a prescribed volume, comprising:
  • valving means for insertion thereof into the clearance passageway, said valving means being selectively operative for opening and closing the clearance passageway to communication with the cylinder volume and for the admittance thereinto of fluid from the cylinder;
  • valve operating means coupled to said valving means for operating the latter; wherein said valve operating means includes a shaft, and a rotatable element coupled to one end of said shaft for effecting rotation thereof;
  • said valving means is operatively engaged with the other end of the shaft
  • said shaft has an axial length greater than that of said clearance passageway to effect a disposition of said rotatable element external of said clearance passageway;
  • said valving means comprises a gate valve, having a stationary element and a movable element;
  • said movable element is integral with said shaft
  • said stationary element and said shaft are concentrically arranged and effect relative rotation therebetween;
  • said fastening means includes means for holding said stationary element at said innermost end of said passageway in a stationary disposition
  • said holding means includes an elongate shaft sleeve, said stationary element is integrally fixed to one end of said sleeve, and a cover plate for replaceable fastening thereof across the outermost end of said passageway to the outer head;
  • said plate being integrally fixed to the other end of said sleeve, and having a borehole formed therein for a throughgoing penetration therof by said shaft;
  • said plate has a bearing surface
  • said rotatable element has a bearing surface
  • bearing surfaces together define an interface for relative rotation therebetween; further including means for securing said rotatable element against rotation; and wherein said rotatable element has an arcuate slot formed therethrough;
  • said securing means comprises a headed fastener in penetration of said slot and threadedly secured to said plate.
  • said valving means comprises means for opening and closing said clearance passageway only at an innermost end thereof.
  • said shaft is rotatably disposed within said sleeve.
  • An assembly according to claim 1, further including:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
US379498A 1973-07-16 1973-07-16 Clearance pocket assembly Expired - Lifetime US3878770A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US379498A US3878770A (en) 1973-07-16 1973-07-16 Clearance pocket assembly
CA202,436A CA1026722A (en) 1973-07-16 1974-06-13 Clearance pocket assembly
GB2765574A GB1451852A (en) 1973-07-16 1974-06-21 Compressors
DE2432327A DE2432327A1 (de) 1973-07-16 1974-07-05 Anordnung fuer den toten raum eines zylinders
IT25118/74A IT1017123B (it) 1973-07-16 1974-07-12 Complesso per sacca di gioco
FR7424737A FR2238063B1 (de) 1973-07-16 1974-07-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US379498A US3878770A (en) 1973-07-16 1973-07-16 Clearance pocket assembly

Publications (1)

Publication Number Publication Date
US3878770A true US3878770A (en) 1975-04-22

Family

ID=23497509

Family Applications (1)

Application Number Title Priority Date Filing Date
US379498A Expired - Lifetime US3878770A (en) 1973-07-16 1973-07-16 Clearance pocket assembly

Country Status (6)

Country Link
US (1) US3878770A (de)
CA (1) CA1026722A (de)
DE (1) DE2432327A1 (de)
FR (1) FR2238063B1 (de)
GB (1) GB1451852A (de)
IT (1) IT1017123B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384826A (en) * 1981-05-04 1983-05-24 Tenneco, Inc. Method and apparatus for controlling communication with a compressor unloader chamber
US4694732A (en) * 1986-03-31 1987-09-22 Ingersoll-Rand Company Clearance pocket assembly
US20050098083A1 (en) * 2003-11-11 2005-05-12 Leonid Petrenko Flag lock

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US100113A (en) * 1870-02-22 Joseph breeden
US1333617A (en) * 1918-04-04 1920-03-16 Edwin M Harkins Waste-plug for washbowls
US1364059A (en) * 1917-01-09 1920-12-28 Jones Owen Marshall Valve
US1579782A (en) * 1923-09-19 1926-04-06 Worthington Pump & Mach Corp Regulator for variable-capacity compressors
US1621913A (en) * 1925-10-19 1927-03-22 Ingersoll Rand Co Clearance unloader
US1867681A (en) * 1931-07-31 1932-07-19 Vitler Mfg Company Compressor
US1969507A (en) * 1931-03-27 1934-08-07 Cooper Bessemer Corp Compressor mechanism
US3045892A (en) * 1959-09-23 1962-07-24 Ingersoll Rand Co Hydraulic variable volume clearance pocket device
US3295748A (en) * 1964-07-17 1967-01-03 Burckhardt Ag Maschf Arrangement for the continuous adjustment of the output of a piston compressor
US3618475A (en) * 1970-06-01 1971-11-09 Cooper Ind Inc Load controlling device for compressors
US3655301A (en) * 1970-05-28 1972-04-11 Clifford F Mcclung Fluid pump

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US100113A (en) * 1870-02-22 Joseph breeden
US1364059A (en) * 1917-01-09 1920-12-28 Jones Owen Marshall Valve
US1333617A (en) * 1918-04-04 1920-03-16 Edwin M Harkins Waste-plug for washbowls
US1579782A (en) * 1923-09-19 1926-04-06 Worthington Pump & Mach Corp Regulator for variable-capacity compressors
US1621913A (en) * 1925-10-19 1927-03-22 Ingersoll Rand Co Clearance unloader
US1969507A (en) * 1931-03-27 1934-08-07 Cooper Bessemer Corp Compressor mechanism
US1867681A (en) * 1931-07-31 1932-07-19 Vitler Mfg Company Compressor
US3045892A (en) * 1959-09-23 1962-07-24 Ingersoll Rand Co Hydraulic variable volume clearance pocket device
US3295748A (en) * 1964-07-17 1967-01-03 Burckhardt Ag Maschf Arrangement for the continuous adjustment of the output of a piston compressor
US3655301A (en) * 1970-05-28 1972-04-11 Clifford F Mcclung Fluid pump
US3618475A (en) * 1970-06-01 1971-11-09 Cooper Ind Inc Load controlling device for compressors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384826A (en) * 1981-05-04 1983-05-24 Tenneco, Inc. Method and apparatus for controlling communication with a compressor unloader chamber
US4694732A (en) * 1986-03-31 1987-09-22 Ingersoll-Rand Company Clearance pocket assembly
US20050098083A1 (en) * 2003-11-11 2005-05-12 Leonid Petrenko Flag lock

Also Published As

Publication number Publication date
GB1451852A (en) 1976-10-06
FR2238063B1 (de) 1978-05-26
IT1017123B (it) 1977-07-20
CA1026722A (en) 1978-02-21
FR2238063A1 (de) 1975-02-14
DE2432327A1 (de) 1975-01-30

Similar Documents

Publication Publication Date Title
KR890002587A (ko) 유압 조절기
US20060118750A1 (en) Flexible backseat seal for gate valve
US3988000A (en) Seals for a gas service butterfly valve
US3878770A (en) Clearance pocket assembly
US3687416A (en) Rotary plug valve
GB2147688A (en) Ball valve
CA2182824A1 (en) Flow control choke with shutoff seal
US4580763A (en) Seal-seat for use in ball valves
DE2062989A1 (de) Ventil
US4496071A (en) Pressure vessels having end closures and retainers
US3467356A (en) Rotary plug valve
US3134569A (en) Quick closing valve
US3420500A (en) Operating mechanism for butterfly valve
CN112160885B (zh) 油田注水用柱塞泵
CN201100439Y (zh) 高性能压力平衡式旋塞阀
US4394787A (en) Hydraulic door closer construction
US3742979A (en) Rotary valve device having a plurality of controlled working passages
DE102005004030A1 (de) Einsatzstück, insbesondere Ventilpatrone oder Verschlussschraube, und hydraulisches Gerät mit einem Einsatzstück
US3882884A (en) Tamperproof open bottom stop assemblies
US3333812A (en) Rotary tapered plug valve and method of assembly
US3438334A (en) Pumps,in particular scavenging pumps for use in drilling operations
BR9900242A (pt) Dispositivo rotativo por pressão de fluìdo.
KR200384595Y1 (ko) 편심 플러그 밸브
GB2123517A (en) Pressure vessels
US1003412A (en) Valve.