US2324552A - Heat actuated safety shutoff valve - Google Patents

Heat actuated safety shutoff valve Download PDF

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Publication number
US2324552A
US2324552A US356263A US35626340A US2324552A US 2324552 A US2324552 A US 2324552A US 356263 A US356263 A US 356263A US 35626340 A US35626340 A US 35626340A US 2324552 A US2324552 A US 2324552A
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Prior art keywords
valve
unit
heat
pressure
trigger
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Expired - Lifetime
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US356263A
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Charles M Bailey
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CHARLES M BAILEY Co Inc
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CHARLES M BAILEY CO Inc
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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
    • F16K17/02—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
    • 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
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • 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
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1797—Heat destructible or fusible
    • Y10T137/1804—With second sensing means

Definitions

  • This invention relates to high-pressure gas valves such as areused in ⁇ power plants, and
  • the valve itself is of the globe type, and includes a body l having a vertically movable valve disc 2 adapted to cooperate with a seat 3 and raised from said seat when open.
  • l p i p A stem 5 projects upwardly from the disc, and passes through a packing gland 5 on topl of the body. At its upper end the stem is connected to a substantially horizontallever 6 which intermediate its ends but close to the stem, is ⁇ pivoted as at 1 on a cage 8 upstanding from the valve body.
  • a substantially vertical trigger 9 is pivoted on thecage in line with and beyond the adjacent end of the lever, the trigger having a lip 9a on its lower end underhanging the lever when the latter is moved down at its opposite end to open the valve as shown in the drawing.
  • a tension spring III is connected to the lever beyond the stem 4 and to the cage above said lever to exert an upward pull on the adjacent portion of the lever, which tends to c lose the valve.
  • a substantially horizontal holding arm Ii is pivoted intermediate its ends as at P on the cage above the lever pivot 1 and extends lengthwise At its trigger end, said arm normally engages a seating notch I2 cut in the edge of the trigger above its pivot and on the same side as lip 9a; such engagement preventing the trigger swinging in a direction to move the lip clear of the lever, as will be evident.
  • the lever will be released and thevalve will be closed by the action'of spring I0 on said lever.
  • I provide the following arrangement: Secured at one end tothe end of the arm Il furthest from the trigger is a chain end is connected to aweight Il. This weight is normally supported above the arm so thatthe chain' is somewhat slack by means of a readily fusible link I5 projectingfromthe ball andwhich is hung from a hook I6 supported from the cage above the weight and trigger.
  • is provided with a cross pin I1, which slidesl in a verticalslot [8in a* yoke I9.
  • This yoke de pends from a stern 20 which at its upperend is connected to the underside of ⁇ a disc 2
  • This disc is yieldably pressed upward by a spring 22 of adjustable pressure.
  • a diaphragm 23 mountedin a housing 24 supported from the cage B.
  • a water pressure pipe 25 is connected intermediate its ends to the housing 24 above the diaphragm by a lateral 26. ⁇
  • the pipe has a pressure reducing valve 21 therein ahead of the lateral, and a restriction 28 between the reducing valve and said lateral.
  • the pipe extends any desired distance beyond the lateral and at convenient points, such as in dverent rooms separated by a wall 29, is provided with ⁇ overhead sprinkler heads indicated diagrammatically at 30 and which are of that conventional type which open only when aiIected by fire ⁇ heat inthe vicinity.
  • the spring 22 is set to counteract the normal water pressure in the diaphragm housing, and it will ⁇ be seen that as soon as such pressure is relieved by the opening of any sprinkler, the spring 22 will act to lift disc 2
  • a safety control mechanism for a self-closing valve having releasable means associated therewith to normally hold the valve open, said means including a member movable to release the same, said control mechanism comprising a pressure responsive unit adapted to be arranged in communication with a fluid pressure conduit, means connecting said pressure responsive unit with said holding means whereby the unit is operative to release said holding means upon predetermined variation in the iluid pressure in said conduit, a separate unit responsive to fire heat adjacent the valve, and separate means connecting said separate unit and the common holding means whereby said separate unit is operative to release said holding means; the connecting means for the pressure responsive unit having limited loose-play connection with said member, and the separate connecting means for said fire-heat responsive unit comprising a normally slack exible element of non-combustible material connected to said member whereby either unit may separately and independently move said member and release said holding means.
  • a safety control mechanism f or a self-closing valve having releasable means associated therewith to normally hold the valve open, said means including a vertically movable member; said control mechanism comprising a pressure responsive unit adapted to be arranged in communication with a fluid pressure conduit, means connecting said pressure responsive unit with said holding means whereby the unit is operative to release said holding means upon predetermined variation in the uid pressure in said conduit, a separate unit responsive to ilre heat adjacent the valve, and separate means connecting said separate unit and the common holding means whereby said separate unit is operative to release said holding means upon predetermined nre heat adjacent the valve; the connecting means for the pressure responsive unit having loose play connection with said member.
  • the heat responsive unit including an elevated weight suspended from a fusible element, and the connecting means for said nre heat responsive unit comprising a normally slack ilexible element of noncombustible material connected between the weight and said member, whereby either unit may separately and independently move said member and release said holding means.
  • a safety control mechanism for a self-closing valve having releasable means associated therewith to normally hold the valve open, said means including a vertically movable member: said control mechanism comprising a pressure responsive unit adapted to be arranged in communication with a fluid pressure' conduit. means connecting said pressure responsive unit with said holding means whereby the unit is operative to release said holding means upon predetermined variation in the iiuid pressure in said conduit.
  • a separate unit responsive to re heat adjacent the valve and separate means connecting said separate unit and the common holding means whereby said separate unit isoperative to release said holding means upon predetermined ilre heat adjacent the valve;
  • the connecting means for the pressure responsive unit having loose play connection with said member, the re heat responsive unit including an elevated weight suspended from a fusible element, and the connecting means for said nre heat responsive unit comprising a metal chain xed on and depending from the weight to a point below said member and thence looping upward and connected thereto, whereby either unit may separately and independently move said member and release said holding means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Temperature-Responsive Valves (AREA)

Description

July 20,1943. Y MBAILEY 2,324,552
HEAT- ACTUATED SAFETY SHUT-OFF VALVE Filedsept. 11, 1940 INVENTOR Chanaizey `of the lever toward the trigger.
Patented July 2o, i943 2,324,552 i HEAT ACTUATEI)` SAFETY SHUTOFF VALVE j Charles M. Bailey, SanFrancisco, Calif., assignor j to Charles-M. Bailey. Co., Inc., a corporationv Application Septenibc'll, 1940, Serial No. 356,263
-, a claims. (ci. 1st- 139) This invention relates to high-pressure gas valves such as areused in`power plants, and
' particularly represents modiiications'oi and `ad ditions to the valve structure shown in U. S. Patent No. 2,229,543, dated January 21, 194:1.`
My principal object now is` to provide a control means for the valve so arranged that while the valve will normally remain open, it will be closed by reason of excessive heat caused by a reimrnediately adjacent the valve; or Vindependently by a re at any point in the plant relatively remote from the valve." i
The figure on the drawing is an elevation. parti naar other-nexium eiemennwhich at itsother ly in section, of my improved valve control means.
' Referring now more particularly to the characters of reference on the drawing, the valve itself is of the globe type, and includes a body l having a vertically movable valve disc 2 adapted to cooperate with a seat 3 and raised from said seat when open. l p i p A stem 5 projects upwardly from the disc, and passes through a packing gland 5 on topl of the body. At its upper end the stem is connected to a substantially horizontallever 6 which intermediate its ends but close to the stem, is `pivoted as at 1 on a cage 8 upstanding from the valve body. A substantially vertical trigger 9 is pivoted on thecage in line with and beyond the adjacent end of the lever, the trigger having a lip 9a on its lower end underhanging the lever when the latter is moved down at its opposite end to open the valve as shown in the drawing. l
A tension spring III is connected to the lever beyond the stem 4 and to the cage above said lever to exert an upward pull on the adjacent portion of the lever, which tends to c lose the valve.
A substantially horizontal holding arm Ii is pivoted intermediate its ends as at P on the cage above the lever pivot 1 and extends lengthwise At its trigger end, said arm normally engages a seating notch I2 cut in the edge of the trigger above its pivot and on the same side as lip 9a; such engagement preventing the trigger swinging in a direction to move the lip clear of the lever, as will be evident. As soon as the trigger end of the arm is raised clear of the seating notch, however, i the lever will be released and thevalve will be closed by the action'of spring I0 on said lever. i
In order to thus release the arm and cause the trigger to trip by reason of nre ln the immediate vicinity of the valve, I provide the following arrangement: Secured at one end tothe end of the arm Il furthest from the trigger is a chain end is connected to aweight Il. This weight is normally supported above the arm so thatthe chain' is somewhat slack by means of a readily fusible link I5 projectingfromthe ball andwhich is hung from a hook I6 supported from the cage above the weight and trigger.
It will therefore be seen that lire heat adja` cent-the valve will cause the link to melt. `The ball` will then drop below the arm as far as the` chain will permit, causing `a sudden downward pull to be exerted` on the adjacent end of the j arm. This will of course raise the other endl of t said arm clear of the trigger, releasing the latter and allowing the valve to close. i
i Inorder to'also cause the valve to close by reheat at points other than immediately adjacentthe valve, I provide the followingstructure:`
The arm I|,`between its pivot P and the trigger, is provided with a cross pin I1, which slidesl in a verticalslot [8in a* yoke I9. This yoke de pends from a stern 20 which at its upperend is connected to the underside of `a disc 2|. This disc is yieldably pressed upward by a spring 22 of adjustable pressure. Directly` above and engaging the disc is a diaphragm 23 mountedin a housing 24 supported from the cage B.
A water pressure pipe 25 is connected intermediate its ends to the housing 24 above the diaphragm by a lateral 26.` The pipe has a pressure reducing valve 21 therein ahead of the lateral, and a restriction 28 between the reducing valve and said lateral. The pipe extends any desired distance beyond the lateral and at convenient points, such as in diilerent rooms separated by a wall 29, is provided with `overhead sprinkler heads indicated diagrammatically at 30 and which are of that conventional type which open only when aiIected by lire `heat inthe vicinity.
The spring 22 is set to counteract the normal water pressure in the diaphragm housing, and it will `be seen that as soon as such pressure is relieved by the opening of any sprinkler, the spring 22 will act to lift disc 2| and stem 20 attached thereto, and will raise the adjacent portion of the holding arm Il. This will release the `trigger and allow the valve to close in the same manner as by `the action of the weight Il previously described.
From the foregoing description it will be readily g seen that I haveproduced such a device as substantially fulillls the objects of the invention as set forth herein. i
While this specification sets forth in detail the present and preferred construction of the dovice,'sti1l in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of theinvention, as dened by the appended claims.
Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent is:
1. A safety control mechanism for a self-closing valve having releasable means associated therewith to normally hold the valve open, said means including a member movable to release the same, said control mechanism comprising a pressure responsive unit adapted to be arranged in communication with a fluid pressure conduit, means connecting said pressure responsive unit with said holding means whereby the unit is operative to release said holding means upon predetermined variation in the iluid pressure in said conduit, a separate unit responsive to fire heat adjacent the valve, and separate means connecting said separate unit and the common holding means whereby said separate unit is operative to release said holding means; the connecting means for the pressure responsive unit having limited loose-play connection with said member, and the separate connecting means for said fire-heat responsive unit comprising a normally slack exible element of non-combustible material connected to said member whereby either unit may separately and independently move said member and release said holding means.
2. A safety control mechanism f or a self-closing valve having releasable means associated therewith to normally hold the valve open, said means including a vertically movable member; said control mechanism comprising a pressure responsive unit adapted to be arranged in communication with a fluid pressure conduit, means connecting said pressure responsive unit with said holding means whereby the unit is operative to release said holding means upon predetermined variation in the uid pressure in said conduit, a separate unit responsive to ilre heat adjacent the valve, and separate means connecting said separate unit and the common holding means whereby said separate unit is operative to release said holding means upon predetermined nre heat adjacent the valve; the connecting means for the pressure responsive unit having loose play connection with said member. the lire heat responsive unit including an elevated weight suspended from a fusible element, and the connecting means for said nre heat responsive unit comprising a normally slack ilexible element of noncombustible material connected between the weight and said member, whereby either unit may separately and independently move said member and release said holding means.
3. A safety control mechanism for a self-closing valve having releasable means associated therewith to normally hold the valve open, said means including a vertically movable member: said control mechanism comprising a pressure responsive unit adapted to be arranged in communication with a fluid pressure' conduit. means connecting said pressure responsive unit with said holding means whereby the unit is operative to release said holding means upon predetermined variation in the iiuid pressure in said conduit. a separate unit responsive to re heat adjacent the valve, and separate means connecting said separate unit and the common holding means whereby said separate unit isoperative to release said holding means upon predetermined ilre heat adjacent the valve; the connecting means for the pressure responsive unit having loose play connection with said member, the re heat responsive unit including an elevated weight suspended from a fusible element, and the connecting means for said nre heat responsive unit comprising a metal chain xed on and depending from the weight to a point below said member and thence looping upward and connected thereto, whereby either unit may separately and independently move said member and release said holding means.
CHARLES M, BAILEY.
US356263A 1940-09-11 1940-09-11 Heat actuated safety shutoff valve Expired - Lifetime US2324552A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673707A (en) * 1949-07-05 1954-03-30 Fred W Mcrae Safety cutoff valve having bellows controlled trip
US2819041A (en) * 1953-02-24 1958-01-07 William J Beckham Percussion type rock bit
US3166084A (en) * 1958-07-28 1965-01-19 Textron Inc Safety control system for fluid distribution and apparatus
US5908074A (en) * 1998-02-16 1999-06-01 Potts; Laurence A. Fire detecting valve activation assembly for vehicle fire suppression systems
US20130312850A1 (en) * 2010-12-06 2013-11-28 Single Buoy Moorings, Inc. Actuator for operating a valve in a fluid line
ITUB20155370A1 (en) * 2015-11-09 2017-05-09 Pietro Fiorentini Spa SAFETY VALVE FOR GAS SENSITIVE TO TEMPERATURE AND METHOD FOR THE CONSTRUCTION OF SUCH SAFETY VALVE
EP3680527A1 (en) 2019-01-09 2020-07-15 Linde GmbH Valve assembly to be directly coupled to a container containing compressed gas

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673707A (en) * 1949-07-05 1954-03-30 Fred W Mcrae Safety cutoff valve having bellows controlled trip
US2819041A (en) * 1953-02-24 1958-01-07 William J Beckham Percussion type rock bit
US3166084A (en) * 1958-07-28 1965-01-19 Textron Inc Safety control system for fluid distribution and apparatus
US5908074A (en) * 1998-02-16 1999-06-01 Potts; Laurence A. Fire detecting valve activation assembly for vehicle fire suppression systems
US20130312850A1 (en) * 2010-12-06 2013-11-28 Single Buoy Moorings, Inc. Actuator for operating a valve in a fluid line
ITUB20155370A1 (en) * 2015-11-09 2017-05-09 Pietro Fiorentini Spa SAFETY VALVE FOR GAS SENSITIVE TO TEMPERATURE AND METHOD FOR THE CONSTRUCTION OF SUCH SAFETY VALVE
WO2017081627A1 (en) * 2015-11-09 2017-05-18 Pietro Fiorentini S.P.A. Gas safety valve sensitive to temperature and method for the construction of such a safety valve
US10520102B2 (en) 2015-11-09 2019-12-31 Pietro Fiorentini Spa Gas safety valve sensitive to temperature and method for the construction of such a safety valve
EP3680527A1 (en) 2019-01-09 2020-07-15 Linde GmbH Valve assembly to be directly coupled to a container containing compressed gas
WO2020143897A1 (en) 2019-01-09 2020-07-16 Linde Gmbh Valve assembly to be directly coupled to a container containing compressed gas

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