US1153850A - Valve for automatically stopping the supply of liquid to pipes upon breaking of the latter. - Google Patents

Valve for automatically stopping the supply of liquid to pipes upon breaking of the latter. Download PDF

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Publication number
US1153850A
US1153850A US1913790479A US1153850A US 1153850 A US1153850 A US 1153850A US 1913790479 A US1913790479 A US 1913790479A US 1153850 A US1153850 A US 1153850A
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Prior art keywords
valve
liquid
plug
piston
supply
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Expired - Lifetime
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Ernst Meier
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    • 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
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • 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
    • Y10T137/7723—Safety cut-off requiring reset
    • Y10T137/7726—Responsive to change in rate of flow
    • Y10T137/7727—Excessive flow cut-off
    • 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
    • Y10T137/7723—Safety cut-off requiring reset
    • Y10T137/7729—Reset by pressure equalization valve or by-pass
    • 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
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7787—Expansible chamber subject to differential pressures
    • Y10T137/7789—With Venturi tube having a connection to throat

Definitions

  • This invention relates to a valve for "liquids, which, upon breaking of a pipe, to
  • the flowing energy produced upon .a decrease of pressure taking place by the pressure changing into-speed is 'used for closing the valve in such-a way that upon an excessivespeed at .a narrowest portion of the valve beyond the valve-plug the latter is closed.
  • Valves have already become known, in which the decrease of pressure is also changed into speed.
  • the flowing energy thus obtained is, however, with such valves not used for closing the latter in order to stop the supply of liquid, but for controlling the valve only, that is to say for obpansible and thus entirely dilferent from non-compressible and non-expansible liquids from a physical'point of view.
  • valve-plug is directly connected with a piston working in a cylinder, which at one end is in communication with the valve-' chamber in advance of the valveplug and at the other end with a double cone-shaped portion of the valve-chamber beyond the valve-plug.
  • the improvements consist in making the piston spring-pressed in such a way that it normally keeps the valve-plug in open position and in perforating the piston so asto create apermanent communication between both cyllnder ends through said perforation and finally in so making the communication between the cylinder and the double-cone portion of the valve-chamber that the end ports of the same areconsiderably narrowed, so that a throttling is effected at these places,
  • valve-plug 0 which is connected with a piston 01.
  • the latter is at one side loaded by the full pressure of the liquid existing in advance of the valve-plug c, for which purpose the passage-way a in advance of the.
  • valve-plug is, through a port f, in communication with the cylinder-space g outward of the piston d.
  • the piston is, throu h its piston-rod, acted upon by a spring 5 which tends to bring the piston cl and thus the valve-plug 0 into the open position and to keep thev same normally open.
  • the passage-way a lying beyond the valve-plug c is narrowed at it in such a way that the passage-way presents on this side of thevalve-plug the shape of a double-cone having its narrowest diameter at h.
  • the narrowed part b of the passa ge-waya is, through a channel k, in communication with the'cylinder-space g inward of the piston d.
  • Said communication is considerably narrowed at i and Z, so that a throttling is effected at these places, whereby changes of pressure in the narrowed part 72, act on the piston 01 in a weak wayonly and larger changes only effect a movement of the piston d and thus of the valve-plug 0.
  • the piston d has a small boring r for creating a permanent communication between the two cylinderspaces on bothsides of the piston.
  • the throttle openings i and Z are sodi-' mensioned that the load continuously acting upon the piston dcannot produce a closing of the valve-plug 0 unless the largest possible quantity of liquid flows through. If the latter is comparatively small, the valve a continuously maintains its approximate po sition owing to the throttling in the openings z' and Z.
  • a valve for automatically stopping the supply of liquid to pipes upon breaking of the latter comprising in combination, a valve-chamber having a narrowed doublecone portion therein, a valve-plug in said chamber located in advance of the double cone portion, a cylinder connected at one end withsaid chamber in advance of the valve-plug and at the other end with said doublecone portion beyond the valve-plug, the latter communication having considerably narrowed end ports, a spring-pressed piston in said cylinder directly connected with said valve-plug and adapted to keep the latter normally in open position "and having a perforation therethrough to permanently connect both cylinder ends, and a stop-cock at the outlet of the valve-chamber, substantially as and for the purpose set forth.

Description

r E. MEIER. VALVE FOR AUTOMATICALLY STOPPING T HE SUPPLY OF LIQUID T0 PIPES UPON BREAKING OF THE LATTER.
I APPLICATION FILED SEPT-18,1913- I 1,153,5, PatentedSept. 14, 1915.
377/27 PSS S.
ERNST MEIER, oF NEtinnc Ku-M, GERMANY.
VALVE roe AUToMATICALLYi'hTOPPING.THF;SUPPLY or LIQUID 'ro rirns BREAKING-or THE LATIER.
UPON
Specification of Letters Patent. Patented Sept. 14, 1915,
Application filed September 12, 1913. Serial No. 790,479.
To all whom it may concern: Be it known that I, ERNST MEIER, a subjectiof the German Emperor, and resident of Neubeckum, Germany, have invented cer-' tain new and useful Improvements in Valves for Automatically Stopping the Supply, of Liquid to Pipes Upon Breaking of the Latter, of which the following is a specification.
.This invention relates to a valve for "liquids, which, upon breaking of a pipe, to
which the liquid is supplied through the valve, and consequent decrease of pressure,
closes automatically and thus stops the supply of liquid.
According to the invention, the flowing energy produced upon .a decrease of pressure taking place by the pressure changing into-speed, is 'used for closing the valve in such-a way that upon an excessivespeed at .a narrowest portion of the valve beyond the valve-plug the latter is closed.
Valves have already become known, in which the decrease of pressure is also changed into speed. The flowing energy thus obtained is, however, with such valves not used for closing the latter in order to stop the supply of liquid, but for controlling the valve only, that is to say for obpansible and thus entirely dilferent from non-compressible and non-expansible liquids from a physical'point of view.
To put the invention into. practice, a valve of that known type is used, in which the valve-plug is directly connected with a piston working in a cylinder, which at one end is in communication with the valve-' chamber in advance of the valveplug and at the other end with a double cone-shaped portion of the valve-chamber beyond the valve-plug. t
The improvements consist in making the piston spring-pressed in such a way that it normally keeps the valve-plug in open position and in perforating the piston so asto create apermanent communication between both cyllnder ends through said perforation and finally in so making the communication between the cylinder and the double-cone portion of the valve-chamber that the end ports of the same areconsiderably narrowed, so that a throttling is effected at these places,
whereby changes of pressure in the doublecone portion act on the piston in a weak way only and larger changes only effect a lmovement of the piston and thus 'of the valve-plug; while at theoutlet of the valvechamber a stop-cock is provided, for the purpose hereinafter explained.
The accompanying drawing shows the improved valve in a central longitudinal section.
Through the passage-way a of the valvecasing, liquid is to flow in the direction of arrows Zn The passage of the liquid through the valve casing is controlled by a valveplug 0, which is connected with a piston 01. The latter is at one side loaded by the full pressure of the liquid existing in advance of the valve-plug c, for which purpose the passage-way a in advance of the. valve-plug is, through a port f, in communication with the cylinder-space g outward of the piston d. The piston is, throu h its piston-rod, acted upon by a spring 5 which tends to bring the piston cl and thus the valve-plug 0 into the open position and to keep thev same normally open. A
,The passage-way a lying beyond the valve-plug c is narrowed at it in such a way that the passage-way presents on this side of thevalve-plug the shape of a double-cone having its narrowest diameter at h. The narrowed part b of the passa ge-waya is, through a channel k, in communication with the'cylinder-space g inward of the piston d.
Said communication is considerably narrowed at i and Z, so that a throttling is effected at these places, whereby changes of pressure in the narrowed part 72, act on the piston 01 in a weak wayonly and larger changes only effect a movement of the piston d and thus of the valve-plug 0.
Between the end of the valve-:casing-and the connection-pipe a a hand-operated stop-cock m is provided. The piston d has a small boring r for creating a permanent communication between the two cylinderspaces on bothsides of the piston.
The throttle openings i and Z are sodi-' mensioned that the load continuously acting upon the piston dcannot produce a closing of the valve-plug 0 unless the largest possible quantity of liquid flows through. If the latter is comparatively small, the valve a continuously maintains its approximate po sition owing to the throttling in the openings z' and Z.
Upon a break occurring in the pipe a a high decrease of pressure results at h and consequently also in the channel 70 and in that side of the cylinder-space connected therewith, whereby the valve-plug is moved toward its seat by the surpressure acting against the piston d in this direction, which acts also on the valve-plug, the valve being thus closed so that liquid ceases from flowing into the pipe a except that trifling portion, which isstill allowed to escape through the port f, boring 1', opening Z, channel is and opening 2'. To again open the valve after repair of the broken pipe, it is only necessary to close the stop-cock m fora short time, whereby through the boring 1' of the piston the pressure of the liquid on both sides of the valve-plug or of the piston respectively is gradually balaiiced. The valve-spring al then causes an automatic opening of the valve-plug c,
whereupon after opening the stop-cock m the pipe a is again fed with liquid.
I claim: A valve for automatically stopping the supply of liquid to pipes upon breaking of the latter, comprising in combination, a valve-chamber having a narrowed doublecone portion therein, a valve-plug in said chamber located in advance of the double cone portion, a cylinder connected at one end withsaid chamber in advance of the valve-plug and at the other end with said doublecone portion beyond the valve-plug, the latter communication having considerably narrowed end ports, a spring-pressed piston in said cylinder directly connected with said valve-plug and adapted to keep the latter normally in open position "and having a perforation therethrough to permanently connect both cylinder ends, and a stop-cock at the outlet of the valve-chamber, substantially as and for the purpose set forth.
In testimony whereof I have hereunto set my hand in the presence of-two subscribing witnesses.
' ERNST MEIER.
\Vitnesses:
KARL HASPELMATH, T. HENDY REED. i
US1913790479 1913-09-18 1913-09-18 Valve for automatically stopping the supply of liquid to pipes upon breaking of the latter. Expired - Lifetime US1153850A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435968A (en) * 1944-07-25 1948-02-17 Kalix John Mechanism for controlling hydraulic flow
US2583384A (en) * 1944-09-29 1952-01-22 Mercier Jean Flow regulator
US2590918A (en) * 1945-10-03 1952-04-01 Sun Oil Co Automatic shutoff valve
US2707484A (en) * 1952-05-12 1955-05-03 Phillips Petroleum Co Valves
US2917077A (en) * 1953-11-09 1959-12-15 Phillips Petroleum Co Excess flow check valve
US3727878A (en) * 1969-10-06 1973-04-17 Norris Industries Quick opening device for dry-pipe valves of automatic sprinkler systems
US4605039A (en) * 1984-10-04 1986-08-12 Stewart-Warner Corporation Runaway protective fuse valve
US5988911A (en) * 1995-11-13 1999-11-23 The Leland Group, Inc. Soap and water dispensing system
US20140299209A1 (en) * 2013-04-05 2014-10-09 Kofulso Co., Ltd. Gas valve having automatically blocking means

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435968A (en) * 1944-07-25 1948-02-17 Kalix John Mechanism for controlling hydraulic flow
US2583384A (en) * 1944-09-29 1952-01-22 Mercier Jean Flow regulator
US2590918A (en) * 1945-10-03 1952-04-01 Sun Oil Co Automatic shutoff valve
US2707484A (en) * 1952-05-12 1955-05-03 Phillips Petroleum Co Valves
US2917077A (en) * 1953-11-09 1959-12-15 Phillips Petroleum Co Excess flow check valve
US3727878A (en) * 1969-10-06 1973-04-17 Norris Industries Quick opening device for dry-pipe valves of automatic sprinkler systems
US4605039A (en) * 1984-10-04 1986-08-12 Stewart-Warner Corporation Runaway protective fuse valve
US5988911A (en) * 1995-11-13 1999-11-23 The Leland Group, Inc. Soap and water dispensing system
US20140299209A1 (en) * 2013-04-05 2014-10-09 Kofulso Co., Ltd. Gas valve having automatically blocking means
US8910655B2 (en) * 2013-04-05 2014-12-16 Kofulso Co., Ltd. Gas valve having automatically blocking means

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