GB702935A - Improvements in or relating to combined feedwater control and safety apparatus for steam boilers - Google Patents

Improvements in or relating to combined feedwater control and safety apparatus for steam boilers

Info

Publication number
GB702935A
GB702935A GB1255951A GB1255951A GB702935A GB 702935 A GB702935 A GB 702935A GB 1255951 A GB1255951 A GB 1255951A GB 1255951 A GB1255951 A GB 1255951A GB 702935 A GB702935 A GB 702935A
Authority
GB
United Kingdom
Prior art keywords
valve
boiler
cam
lever
valves
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
GB1255951A
Inventor
Harry Ralph Ricardo
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB1255951A priority Critical patent/GB702935A/en
Publication of GB702935A publication Critical patent/GB702935A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B5/00—Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
    • F22B37/425—Feed-water supply alarm devices using floats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/08—Controlling water feed or water level; Automatic water feeding or water-level regulators with float-actuated valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Float Valves (AREA)

Abstract

702,935. Indicating and regulating liquid levels. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 21, 1952 [May 29, 1951], No. 12559/51. Class 123(1) [Also in Groups XIII and XXIX] A steam boiler, in the form of, for example, a cylindrical externally-finned drum A supported above a firebox B, is fitted with a spring-loaded safety valve F and a feedwater supply valve G, these valves being mounted in the wall of a chamber C projecting from an end wall A' of the boiler on opposite sides of an end E' of a pivoted lever E the other end of which is connected to an elongated float D. The end E' of the float lever has cam surfaces E<SP>2</SP>, E<SP>3</SP> adapted to mate with the valves F, G, respectively, in such manner that when the water in the boiler falls below a predetermined level the cam E<SP>3</SP> permits the feed valve G to open, a further fall causing the cam E<SP>2</SP> to act upon the valve F and, first, tend to lift it, thus reducing the pressure at which this valve will open, and, finally, lift it positively, so relieving the pressure within the boiler. The lever E may be extended to form, or otherwise be provided with, a level indicator J.
GB1255951A 1951-05-29 1951-05-29 Improvements in or relating to combined feedwater control and safety apparatus for steam boilers Expired GB702935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1255951A GB702935A (en) 1951-05-29 1951-05-29 Improvements in or relating to combined feedwater control and safety apparatus for steam boilers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1255951A GB702935A (en) 1951-05-29 1951-05-29 Improvements in or relating to combined feedwater control and safety apparatus for steam boilers

Publications (1)

Publication Number Publication Date
GB702935A true GB702935A (en) 1954-01-27

Family

ID=10006881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1255951A Expired GB702935A (en) 1951-05-29 1951-05-29 Improvements in or relating to combined feedwater control and safety apparatus for steam boilers

Country Status (1)

Country Link
GB (1) GB702935A (en)

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