US145876A - Improvement in safety-valves - Google Patents

Improvement in safety-valves Download PDF

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Publication number
US145876A
US145876A US145876DA US145876A US 145876 A US145876 A US 145876A US 145876D A US145876D A US 145876DA US 145876 A US145876 A US 145876A
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United States
Prior art keywords
valve
safety
valves
steam
piston
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Expired - Lifetime
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/462—Delivery valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
    • F16K17/046—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the valve being of the gate valve type or the sliding valve type
    • 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]
    • Y10T137/7859—Single head, plural ports in parallel
    • 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]
    • Y10T137/7866—Plural seating
    • Y10T137/7867—Sequential

Definitions

  • the object of our invention is to more effectually and rapidly relieve a steamboiler of its surplus steam than by Ordinary safety-valves, the lift of which is very limited, and this object we attain by combining a loaded valve, a, and piston b, attached to or forming part of the valve, with a casing inclosing a chamber, d, all substantially as shown in the vertical section, Figure 1, of the accompanying drawing, so that when the pressure of steam overcomes the load of the valve its pressure on the latter and on both valve and piston will raise them, so as to present an extended area for the escape of the steam.
  • the casing inclosing the chamber cl is a continuation of the valve-seat, and has lateral openings e e for the escape of steam, and in the top of the easing is an opening for receiving the disk or piston forming part of the valve a, Or rather projecting from the tubular stem a of the valve, which passes through and is guided by the cover B Of the valvechest A, into which stem the pin c' for receiving the load of the valve fits.
  • the steam is in excess of the desired pressure, it raises the valve, gains access to the cham* ber d, and its partial escapetakes place through the openings e.
  • This partial escape causes pressure to be exerted on the piston, which is elevated until arrested by the covor B, as shown by dotted lines, thereby exposing the opening at the top of the chamber d, whence the steam can escape in a large volume into the interior of the chest A, and thence through the outlet h.
  • the load will depress the valve, and the piston will enter the opening in the top of the chamber d, thus preventing the free escape of steam through the said opening, while the lateral openings c will permit the escape of the diminishing volume of steam as the valve seeks its seat.
  • Fig. 2 illustrates an exposed safetyvalve made in accordance with our invention, the tubular stem 'a' passing through and being guided by a yoke, m, which also serves to limit the upward movement of the valve and its piston b.
  • Ve do not claim, broadly, the combination, with a safety-valve, of a perforated chamber for receiving the escaping steam 5 but We claim as our invention-

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)
  • Safety Valves (AREA)
  • Sliding Valves (AREA)

Description

l. JORDAN A. PAUL.
Safety-Valves. No. 145,876, V Patented nec.23,1a73.
'Jyl A v1 Milzmrw W UNITED STATES JOHN JORDAN AND ALFRED PAUL, OF LIVERPOOL, ENGLAND.
IMPROVEMENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 1115,85'6, dated December 23, 1873; application filed November 12, 1873.
To all whom it may concern:
Be it known that we, JOHN JORDAN and ALFRED PAUL, of Liverpool, in the county of Lancaster, Kingdom of Great Britain and Ireland, have invented certain Improvements in Safety Valves, of which the following is av specification The object of our invention is to more effectually and rapidly relieve a steamboiler of its surplus steam than by Ordinary safety-valves, the lift of which is very limited, and this object we attain by combining a loaded valve, a, and piston b, attached to or forming part of the valve, with a casing inclosing a chamber, d, all substantially as shown in the vertical section, Figure 1, of the accompanying drawing, so that when the pressure of steam overcomes the load of the valve its pressure on the latter and on both valve and piston will raise them, so as to present an extended area for the escape of the steam.
In Fig. l the casing inclosing the chamber cl is a continuation of the valve-seat, and has lateral openings e e for the escape of steam, and in the top of the easing is an opening for receiving the disk or piston forming part of the valve a, Or rather projecting from the tubular stem a of the valve, which passes through and is guided by the cover B Of the valvechest A, into which stem the pin c' for receiving the load of the valve fits. The moment the steam is in excess of the desired pressure, it raises the valve, gains access to the cham* ber d, and its partial escapetakes place through the openings e. This partial escape causes pressure to be exerted on the piston, which is elevated until arrested by the covor B, as shown by dotted lines, thereby exposing the opening at the top of the chamber d, whence the steam can escape in a large volume into the interior of the chest A, and thence through the outlet h. After the main volume of surplus steam has been disposed of, the load will depress the valve, and the piston will enter the opening in the top of the chamber d, thus preventing the free escape of steam through the said opening, while the lateral openings c will permit the escape of the diminishing volume of steam as the valve seeks its seat.
Fig. 2 illustrates an exposed safetyvalve made in accordance with our invention, the tubular stem 'a' passing through and being guided by a yoke, m, which also serves to limit the upward movement of the valve and its piston b.
We may remark, in conclusion, that it is usual in proportioning ordinary safety-valves to allow one square inch of valve area for two square feet of grate surface, but that One-third of this valve area will be sufficient in con'- strueting safety-valves according to our invention.
Ve do not claim, broadly, the combination, with a safety-valve, of a perforated chamber for receiving the escaping steam 5 but We claim as our invention- The loaded valve a and its piston b, in combination with the xed perforated chamber d, adapted to the said piston and containing the seat of the valve, all as set forth.
In testimony whereof We have hereunto set our hands in the presence of two subscribing witnesses.
JOHN JORDAN. ALFRED PAUL.
Witnesses:
CHRISTOPHER MORRIS,
Notary Public, Liverpool. GEO. HAYES, his Clerk.
US145876D Improvement in safety-valves Expired - Lifetime US145876A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250146585A1 (en) * 2023-11-06 2025-05-08 Prince Industries, Llc Systems and Methods for Check Valves with Through-Flow, Grooved Poppets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250146585A1 (en) * 2023-11-06 2025-05-08 Prince Industries, Llc Systems and Methods for Check Valves with Through-Flow, Grooved Poppets

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