GB676927A - Improvements in unloading mechanisms for compressors - Google Patents

Improvements in unloading mechanisms for compressors

Info

Publication number
GB676927A
GB676927A GB2063050A GB2063050A GB676927A GB 676927 A GB676927 A GB 676927A GB 2063050 A GB2063050 A GB 2063050A GB 2063050 A GB2063050 A GB 2063050A GB 676927 A GB676927 A GB 676927A
Authority
GB
United Kingdom
Prior art keywords
pressure
unloading
cylinder
compressor
valve
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
Application number
GB2063050A
Inventor
Carl Ernst Persson
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.)
Atlas Copco AB
Original Assignee
Atlas Diesel AB
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 Atlas Diesel AB filed Critical Atlas Diesel AB
Priority to GB2063050A priority Critical patent/GB676927A/en
Publication of GB676927A publication Critical patent/GB676927A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/42—Image pick-up tubes having an input of visible light and electric output with image screen generating a composite electron beam which is deflected as a whole past a stationary probe to simulate a scanning effect, e.g. Farnsworth pick-up tube
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

676,927. Fluid-actuated valves. AKTIEBOLAGET ATLAS DIESEL. Aug. 21, 1950, No. 20630/50. Class 135 [Also in Group XXVIII] An automatic unloading device for a multi-stage compressor comprises an unloading passage leading from the low pressure stage and a second unloading passage leading from a higher pressure stage and an unloading valve controlling the opening and closing of the passages and operable to open the latter in response to a drop in pressure in one of the stages. A two stage compressor has a low pressure cylinder connected through an intercooler with a high pressure cylinder 3 from which the compressed gas is delivered through a pipe and a non-return or stop valve. The unloading device comprises a slide valve 17 in a cylinder 16 communicating through a passage 25 with the cylinder 3 and through a passage 24, pipe 21, and the inter-cooler with the low-pressure cylinder. The inter-cooler has a small bleed vent for releasing the pressure therein when the compressor is stationary. During starting the slide valve 17 is moved by a spring 20 to the position indicated in chain-dotted lines whereby the passages 24, 25 are vented to the atmosphere through a port 28. The pressure built up in the inter-cooler acts, through a branch pipe 22 on the valve to move it to the left thus closing the passages 24, 25. The unloading device may alternatively be connected to the delivery pipe of the compressor.
GB2063050A 1950-08-21 1950-08-21 Improvements in unloading mechanisms for compressors Expired GB676927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2063050A GB676927A (en) 1950-08-21 1950-08-21 Improvements in unloading mechanisms for compressors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2063050A GB676927A (en) 1950-08-21 1950-08-21 Improvements in unloading mechanisms for compressors

Publications (1)

Publication Number Publication Date
GB676927A true GB676927A (en) 1952-08-06

Family

ID=10149091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2063050A Expired GB676927A (en) 1950-08-21 1950-08-21 Improvements in unloading mechanisms for compressors

Country Status (1)

Country Link
GB (1) GB676927A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945727A1 (en) * 1978-12-15 1980-07-03 Nova Werke Ag AIR COMPRESSOR
AT514591B1 (en) * 2013-12-05 2015-02-15 Hoerbiger Kompressortech Hold Cylinder head for multi-stage reciprocating compressors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945727A1 (en) * 1978-12-15 1980-07-03 Nova Werke Ag AIR COMPRESSOR
AT514591B1 (en) * 2013-12-05 2015-02-15 Hoerbiger Kompressortech Hold Cylinder head for multi-stage reciprocating compressors
AT514591A4 (en) * 2013-12-05 2015-02-15 Hoerbiger Kompressortech Hold Cylinder head for multi-stage reciprocating compressors

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