US3294314A - Lifting device for compressor valves - Google Patents

Lifting device for compressor valves Download PDF

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Publication number
US3294314A
US3294314A US536377A US53637766A US3294314A US 3294314 A US3294314 A US 3294314A US 536377 A US536377 A US 536377A US 53637766 A US53637766 A US 53637766A US 3294314 A US3294314 A US 3294314A
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US
United States
Prior art keywords
lifting
pins
springs
valve
lifting pins
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
US536377A
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English (en)
Inventor
Ott Josef
Bauer Friedrich
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.)
Hoerbiger Ventilwerke GmbH and Co KG
Original Assignee
Hoerbiger Ventilwerke GmbH and Co KG
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 Hoerbiger Ventilwerke GmbH and Co KG filed Critical Hoerbiger Ventilwerke GmbH and Co KG
Application granted granted Critical
Publication of US3294314A publication Critical patent/US3294314A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B49/22—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 means of valves
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/08—Actuation of distribution members
    • 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]
    • Y10T137/7876—With external means for opposing bias

Definitions

  • the invention relates to a lifting device for compressor valves serving for the infinitely variable control of the delivery volume of piston-type compressors, comprising lifting pins preferably guided in the valve seat and connected by means of lifting springs with a pressure plate pressing against an adjusting drive.
  • the invention offers an additional advantage insofar as the increase of the masses of the lifting pins is effective with throttled operation only, so that when the compressor operates at full delivery volume, where the stresses in the valve plate are known to be substantially less than in controlled operation, the moving masses of the valve are not increased.
  • the adjusting weights consist of sleeves inserted between the lifting springs and the spring caps provided on the top of the lifting pins.
  • the sleeves are pressed against the spring caps by means of the lifting springs and it is therefore, not necessary to provide special means of attachment for the sleeves which greatly facilitates their fitting.
  • the sleeves may on compass the lifting springs over a considerable section of their length, thereby providing appropriate protection for the lifting springs and preventing broken springs or parts of same from dropping out into the valve.
  • the adjusting weights are formed by rings provided in the valve in coaxial relation to same and interconnecting at least part of the lifting pins.
  • the said rings provide better guidance of the valve plate by the lifting pins, while permitting proper adaptation of the lifting device to the motion of the valve plate within certain limits, such as when the valve plate is placed in an oblique position.
  • at least part of the lifting springs may be so arranged as to rest upon the rings interconnecting the lifting pins in staggered relation to thelifting pins in such a manner that for example, each lifting spring is located between two adjacent lifting pins. This arrangement permits of accomodating a larger number of lifting springs than had been possible with conventional designs, without, however, increasing the number of pins.
  • the lifting pins located on each circle can be provided with a ring of their own, thereby preserving the mobility of the lifting device and the adaptability of the same to the motions of the valve plate, in addition to preventing the rings from impeding the proper flow of the medium in the suction chamber in front of the valve seat.
  • the lifting pins and the lifting springs are preferably inserted with their ends in bores of the rings in order to achieve a firm hold for the extremities of the springs.
  • the rings may be provided with sleeve-shaped extensions around the bores for the lifting springs to be inserted therein with their extremities, so as to prevent fragments of broken springs from dropping out.
  • the lifting pins extend in a manner known per se over and above the lifting springs and through the pressure plate, while the adjusting weights, preferably at least one ring interconnecting a plurality of lifting pins, is located on top of the lifting pins above the lifting springs.
  • This particular design is applicable in such cases where the arrangement of adjusting Weights between the pressure plate and the valve seat is undesirable or impossible. Since with this arrangement the lifting pins extend entirely through the lifting springs, fragments of a broken lifting spring are prevented from falling out.
  • the adjusting weights may be so arranged on the lifting pins as to ensure their axial mobility, an elastic damping member, such as a spring, preferably a cup spring, or a disc made of some elastic material, being provided between the adjusting weights and the lifting pins.
  • an elastic damping member such as a spring, preferably a cup spring, or a disc made of some elastic material
  • FIG. 1 shows a sectional view of a lifting device according to the invention as incorporated in a compressor valve
  • FIG. 2 represents a plan view of a detail of same
  • the valve illustrated in FIG. 1 comprises a valve seat 1 and a valve guard 2 mounted on the valve seat 1 by means of a central screw spindle 3 and a nut 4 screwed thereon. Between the valve seat 1 and the valve guard 2 a guide ring 5 is provided for the guidance of the valve plate 6 and of a spring plate 7. By means of a distance sleeve 8 the valve seat 1 is tightly held against a seating 9 of the cylinder 10 which is closed outwardly by the valve cover 11.
  • lifting pins 12 Inside the valve seat 1 guided lifting pins 12 are provided, by means of which the controlling forces are transmitted to the valve plate 6.
  • the lifting pins 12 On the side facing away from the valve plate 6 the lifting pins 12 are provided with spring caps 13 for the lifting springs 14, the other extremities of which are supported by a pressure plate 15.
  • a pressure plate 15 For the purpose of securing the spring ends to the pressure plate 15, guide bolts 16 are screwed into same.
  • the pressure plate is attached to a bushing 17 supported by a cylindrical guide means 18 formed by an extension of the nut 4 so as to be slidable in the direction of the valve axis.
  • the bushing 17 is subject to the action of an adjusting drive formed by a pneumatic or hydraulic cylinder, for example, and acting upon the bushing 17 by means of a pushrod 19 located in a guide bushing 20 in the cover 11.
  • the controlling forces may also be transmitted to the bushing 17 mechanically by means of a spring or the like.
  • a helical spring 21 serves to restore the pressure plate 15 to its initial position and a bolt 22 is provided for the purpose of preventing rotation of the pressure plate 15 and to limit its stroke.
  • the lifting springs 14 are loaded by the appropriate adjustment of the common pressure plate 15 in such a manner that the lifting pins 12 press against the valve plate 6.
  • the lifting pins 12 keep the valve plate 6 open for part of the compression stroke of the compressor piston against the restoring force of the spring plate 7 and the closing forces exerted thereupon by the backfiowing medium.
  • the valve plate 6 occupies its closing position on the valve seat 1 which it impinges upon with great speed as a result of the considerable forces exerted upon it by the compressing medium.
  • the force of the impact can be attenuated by adapting the masses of the lifting pins 12 following the motions of the valve plate 6 in accordance with the stroke cycle of the compressor to the operating conditions of the compressor.
  • the lifting pins 12 are topped by detachable adjusting weights which are readily exchanged in accordance with any given operating conditions.
  • the adjusting weights are formed by rings 23 and 24 arranged coaxially inside the valve and interconnecting the lifting pins 12 arranged on two concentric circles.
  • the two rings 23, 24 are arranged concentrically and present bores 25 with an inwardly projecting collar 26 as shown in FIG. 2.
  • the bores 25 present lifting pins 12 inserted therein from below and lifting springs 14 inserted from above, the collar 26 of each bore 25 being located between the spring cap 13 and the extremity of the lifting spring 14 so that the rings 23, 24 are maintained in close connection with the lifting pins 12.
  • additional bores 27 are provided in the ring 24 in a peripheral direction between the bores 25, additional lifting springs 28 being inserted in the said bores 27 as shown in FIG.
  • the rings 23 and 24 offer the additional advantage of providing accommodation for a greater number of lifting springs 14, 28 in the valve without increasing the number of lifting pins 12. Furthermore, the rings 23, 24 provide for the approximately parallel guidance of the valve plate 6 as achieved by the use of so-called rigid grippers and occasionally desirable, even if the medium is being delivered under adverse conditions of fiow.
  • the adjusting weights comprise sleeves 29 which are placed on the top of the lifting pins 12 instead of the rings 23, 24.
  • Each sleeve 29 is maintained in position between the spring cap 13 and the extremity of the lifting spring 14 with an inwardly protruding collar 30.
  • the length of the sleeves 29 can be relatively great in the area close to the pressure plate 15 so as to encompass the lifting springs 14 over a substantial section of their overall length, thereby providing appropriate protection for the lifting springs and preventing fragments of broken springs from dropping out.
  • the rings 23 and 24 may present sleeve-shaped extensions around the bores 25 and 27, the extremities of the lifting springs being inserted in the said extensions.
  • FIGS. 4 and 5 differ from the embodiment shown in FIGS. 1 and 3 chiefly insofar as the lifting pins 12 extend on top over and above the lifting springs 14 and through the pressure plate 15.
  • the lifting springs 14 are securely maintained in position over their entire length.
  • the adjusting weights are placed on top of the lifting pins 12 somewhere above the lifting springs 14 and the pressure plate 15, and are, in the embodiments of the invention illustrated in the drawings, formed by rings 31 interconnecting a number of lifting pins 12.
  • FIG. 1 and 3 chiefly insofar as the lifting pins 12 extend on top over and above the lifting springs 14 and through the pressure plate 15.
  • the lifting springs 14 are securely maintained in position over their entire length.
  • the adjusting weights are placed on top of the lifting pins 12 somewhere above the lifting springs 14 and the pressure plate 15, and are, in the embodiments of the invention illustrated in the drawings, formed by rings 31 interconnecting a number of lifting pins 12.
  • the ring 31 is furthermore supported by the upper extremity of the lifting pin 12 in such a manner as to be movable in the direction of the axis of the said lifting pin, an elastic damping means consisting of a cup spring 32 being provided between the ring 31 and the lifting pin 12.
  • a cup spring 32 is provided between the ring 31 and the lifting pin 12.
  • the adjusting weights are easily removable and exchangeable for other adjusting weights, so that the lifting device can be used, depending on given requirements, either without any adjusting weight or with such adjusting weights as have been adapted to suit given operating conditions.
  • adjusting weights with different masses are made available for use if and as required, so that the masses of the members of the lifting device following the motions of the valve plate of the controlled suction valve in accordance with the stroke cycle can be readily adapted to the operating conditions of the compressor.
  • a lifting device for compressor valves serving for the infinitely variable control of the delivery volume of piston-type compressors comprising lifting pins acting on a valve plate, lifting springs and a pressure plate pressing against an adjusting drive, the lifting springs connecting the lifting pins with the pressure plate, wherein the lifting pins are provided with adjusting weights detachably placed thereupon for the purpose of adapting the masses of the lifting pins to the operating conditions of the compressor, in particular with regard to speed, pressure and valve stroke.
  • a lifting device an claimed in claim 7, wherein the rings are provided with sleeve-shaped extensions around the said bores wherein the lifting springs are inserted with their extremities.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US536377A 1965-03-24 1966-03-22 Lifting device for compressor valves Expired - Lifetime US3294314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT265065A AT256319B (de) 1965-03-24 1965-03-24 Abhebevorrichtung für die Ventilplatte selbsttätiger Verdichterventile

Publications (1)

Publication Number Publication Date
US3294314A true US3294314A (en) 1966-12-27

Family

ID=3538081

Family Applications (1)

Application Number Title Priority Date Filing Date
US536377A Expired - Lifetime US3294314A (en) 1965-03-24 1966-03-22 Lifting device for compressor valves

Country Status (3)

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US (1) US3294314A (de)
AT (1) AT256319B (de)
GB (1) GB1117372A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518032A (en) * 1968-05-24 1970-06-30 Dresser Ind Compressor cylinder unloader
US3613719A (en) * 1968-10-16 1971-10-19 Hoerbiger Ventilwerke Ag Compressor valve arrangement
US5642753A (en) * 1996-07-01 1997-07-01 Dresser-Rand Company Valve unloader assembly
US20080149195A1 (en) * 2006-12-22 2008-06-26 Bernhard Spiegl Suction valve with unloader
CN103807147A (zh) * 2014-02-28 2014-05-21 成都大漠石油机械有限公司 便于调节出气压力的气阀
CN113767221A (zh) * 2019-04-03 2021-12-07 诺沃皮尼奥内技术股份有限公司 用于往复式机器的完全致动的阀和包括该阀的往复式机器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928678A (en) * 1932-11-25 1933-10-03 Cleveland Wire Spring Co Spring dampener or cushion
US2526922A (en) * 1946-06-11 1950-10-24 York Corp Compressor
US2673025A (en) * 1949-11-14 1954-03-23 Trane Co Compressor unloading means
US2742054A (en) * 1954-02-05 1956-04-17 Consolidation Coal Co Spring biased safety valve with spring bias relieving means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928678A (en) * 1932-11-25 1933-10-03 Cleveland Wire Spring Co Spring dampener or cushion
US2526922A (en) * 1946-06-11 1950-10-24 York Corp Compressor
US2673025A (en) * 1949-11-14 1954-03-23 Trane Co Compressor unloading means
US2742054A (en) * 1954-02-05 1956-04-17 Consolidation Coal Co Spring biased safety valve with spring bias relieving means

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518032A (en) * 1968-05-24 1970-06-30 Dresser Ind Compressor cylinder unloader
US3613719A (en) * 1968-10-16 1971-10-19 Hoerbiger Ventilwerke Ag Compressor valve arrangement
US5642753A (en) * 1996-07-01 1997-07-01 Dresser-Rand Company Valve unloader assembly
US20080149195A1 (en) * 2006-12-22 2008-06-26 Bernhard Spiegl Suction valve with unloader
US8500420B2 (en) * 2006-12-22 2013-08-06 Hoerbiger Kompressortechnik Holding Gmbh Suction valve with unloader
CN103807147A (zh) * 2014-02-28 2014-05-21 成都大漠石油机械有限公司 便于调节出气压力的气阀
CN103807147B (zh) * 2014-02-28 2016-01-13 成都大漠石油机械有限公司 便于调节出气压力的气阀
CN113767221A (zh) * 2019-04-03 2021-12-07 诺沃皮尼奥内技术股份有限公司 用于往复式机器的完全致动的阀和包括该阀的往复式机器
US20220056904A1 (en) * 2019-04-03 2022-02-24 Nuovo Pignone Tecnologie - S.R.L. A fully actuated valve for a reciprocating machine and reciprocating machine including said valve
US11859607B2 (en) * 2019-04-03 2024-01-02 Nuovo Pignone Tecnologie—S.R.L. Fully actuated valve for a reciprocating machine and reciprocating machine including said valve

Also Published As

Publication number Publication date
GB1117372A (en) 1968-06-19
AT256319B (de) 1967-08-10

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