US3563268A - Valve systems - Google Patents
Valve systems Download PDFInfo
- Publication number
- US3563268A US3563268A US761650A US3563268DA US3563268A US 3563268 A US3563268 A US 3563268A US 761650 A US761650 A US 761650A US 3563268D A US3563268D A US 3563268DA US 3563268 A US3563268 A US 3563268A
- Authority
- US
- United States
- Prior art keywords
- valve
- boiler
- chamber
- vessel
- control device
- 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 - Lifetime
Links
Images
Classifications
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
-
- 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
- F22D11/00—Feed-water supply not provided for in other main groups
-
- 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
- Y10T137/7287—Liquid level responsive or maintaining systems
Definitions
- a valve system for a liquid-containing vessel such as a boiler in which a valve chamber between connections leading to the vessel, to a control device and to exhaust contains a valve head which can close the connections to the vessel and to exhaust but can not close the connections to the control device.
- This invention relates to equipment comprising, in combination, a vessel for containing a liquid, a pipe connecting said vessel to a device for controlling the supply of liquid to said vessel to maintain the liquid in the vessel at a substantially constant level and a valve located in the pipe between the vessel and the control device, which valve is arranged to control the flow of liquid between the control device and the vessel and between both the control device and the vessel and exhaust.
- the present invention has particular application to equip ment of the above kind in which the vessel is a steam boiler and the valve in the pipe between the boiler and the control device is operable for the removal of sediment or other solid impurities from the pipe.
- control device controls not only the supply of water to the boiler but also controls operation of a burner that supplies heat to the boiler, the arrangement being that water is supplied to the boiler when the level of water in the control device falls below a predetermined value and also that heat is supplied to the boiler so long as the level of water in the control device is above a predetermined level.
- valve can be left in a condition in which the control device is cut off both from the interior of the boiler and from exhaust. This means that, regardless of the level of the water in the boiler, there will be a substantially fixed level of water in the control device so that no further water will be pumped into the boiler but the burner will continue to operate with the danger that the boiler will boil dry.
- the control device may consist of a chamber containing a float valve or it may include electronic or other level sensing devices.
- the valve between the vessel and the control device comprises a valve body containing a chamber, a pair of valve seats within the valve chamber, which valve seats are located between connections to the vessel and to exhaust.
- FIG. 1 is an end view of part of a boiler and a valve system connected thereto;
- FIG. 2 is a sectional view of one of the valves
- FIG. 3 is a sectional view of another of the valves.
- FIG. 4 is a sectional view of an alternative form of valve to that shown in FIG. 2.
- a generally conventional steam boiler 10 which includes a cylindrical shell 11 arranged with its axis horizontal, the shell containing means (not shown) for heating water inside it.
- a float chamber, 12 On each side of the shell 11 and externally thereof there is provided a float chamber, 12, only one such chamber 12 being shown in FIG. 1, each chamber l2 containing a float valve (shown in outline in FIG.
- level control devices e.g. electronic sensing devices (shown in outline in FIG. I), may be provided.
- a pipe 13 connects each float chamber 12 to the interior of the boiler, the two pipes 13 leading to the two chambers 12 being diametrically opposite to each other and at the same horizontal level.
- Each pipe 13 includes a horizontally extending portion 14 leading to a valve body 15 and a vertically extending portion 16 leading from the valve body 15, the valve body 15 being provided with flanges 17 for connection to said two portions 14 and 16 of the pipe.
- the valve body 15 contains a generally elongated chamber 18 and at each end of the chamber 18 there is a valve seat 19 constituted by a stainless steel or plastics ring.
- the connection 20 to the boiler leads from the chamber 18 from one end thereof and, beyond the other valve seat 19 there is fitted an extension piece 21 which has an outlet 9 extending at right angles to the axis of the chamber 18.
- valveoperating member 23 which comprises a stem 24 and a head 25, the head being 'of generally circular cross section and having a projecting lug 26 which is arranged to engage in a keyway 27 in a wall of the chamber 18 whereby the head 25 is prevented from rotating within the chamber and the diameter of the head 25 is the same as the diameter of thevalve chamber 18.
- the stem 24 of the valve-operating member 23 is of less diameter than the head 25 and the head 25 has generally inclined end portions 28 which are arranged to engage the stainless steel or plastics sealing members 19.
- the length of the head 25 is less than the diameter of the connection 22 to the float chamber 12.
- the stem 24 and the head 25 of the valve-operating member 23 are provided with a blind bore 29 which is threaded over a major portion of its length and the thread of the operating .member cooperates with a mating screw thread formation formed on an operating spindle 30 received in the bore 29 whereby, on rotation, of the spindle 30 the valve-operating member 23, because it is prevented from rotating, by virtue of the engagement of the lug 26 in the keyway 27, is caused to move longitudinally within the chamber 18.
- Rotation of the spindle 30 is obtained by means of a manually operable handle 31 at the free end of the spindle 30 the spindle 30 passing through an aperture formed in a wall 32 of the extension piece 21 connected to the valve chamber 18 and sealing means 33 being provided between the spindle 30 and said wall 32 to prevent the escape of water or steam between the spindle 30 and said wall 32.
- valve-operating member I3 In use the valve-operating member I3 is in one limiting position as shown in chain-dotted lines in FIG. 2 so that one inclined end portion 28 of the head 25 of the operating member is in engagement with the valve seat 19 associated with the outlet 9 leading to exhaust whereby the boiler 10 and the float chamber 12 are in communication with each other.
- the handle 31 at the end of the stem 30 is rotated to move the valve-operating member 23 axially within the chamber 18 out of engagement with said valve seat 19 into engagement with the valve seat 19 associated with the boiler as shown in full lines in FIG. 2.
- the valve head 25 When the valve head 25 is in an intermediate position between the two valve seats 19 the connections to the boiler 10, the float chamber 12 and exhaust are all open so that impurities are blown out through the outlet 9.
- the valve-operating member 23 When the valve-operating member 23 is in its other limiting position, i.e. in engagement with the valve seat 19 associated with the boiler 10, the float chamber 12 is in communication with the exhaust whereby the float chamber 12 is emptied and the supply of heat to the boiler is thereby cut off.
- This arrangement ensures that the float chamber 12 is either in communication with the boiler 10 or in communication with the exhaust so that there is no possibility of the level of water in the float chamber 12 being higher than the level ofthe water in'the boiler 10.
- valve 39 located between the boiler 10 and the T- junction 37.
- Said valve 39 is in the form of a cock and, as shown in FIG. 3, includes a shutoff member 40 movable either into or out of engagement with a valve seat 41 constituted by the surrounds of an aperture 42 formed in a web 43 dividing the interior of the valve chamber 44 into two compartments.
- the shutoff member 40 is normally out ofengagement with said seat 41 to allow the flow of steam from the boiler 10 to the T-junction 37, the shutoff member 40 being in engagement with a further seat 45 located at the inner end of a subsidiary chamber 46 through the end wall 47 of which projects a spindle 48 for operating the valve.
- a bleed 49 leading from said subsidiary chamber 46 is that, when the valve member 40 is moved to the position shown in FIG. 3 to shutoff the connection between the boiler I and the T-junction 37 bleed 49 is in communication with the subsidiary chamber 46 of said valve and thus in communication with the atmosphere through the bleed 49.
- the bleed 49 contains a whistle so that, when the valve is operated to shut offthe connection between the boiler and the T-junction 37, steam from the float chamber 12 and the pipe between the T-junction 37 and the float chamber 12 issues through said bleed 49 to indicate to the operator that the valve is closed.
- the bleed 49 may alternatively contain a pressure or temperature control for sounding a remote alarm. This arrangement also ensures that should the steam in the line 35 between the T-junction 37 and each float chamber 12 condense, the pressure inside the float chambers 12 will not fall below atmospheric pressure as might cause water to flow from the inside of the boiler 10 into the float chambers 12 and therefore give a false reading of the level of water inside the boiler 10.
- the valve shown in FIG. 4 may, in some circumstances, be used instead ofthe valve shown in FIG. 2 and includes a flange 50 for connection to the pipe 14 leading from the boiler and a flange 51 for connection to the pipe 16 leading to the float chamber 12.
- the flanges 50 and 51 are at the outer ends of cylindrical tubes 52 and 53 respectively and, at the junction of the two tubes 52 and 53 there is a generally cylindrical chamber in which the head 54 ofa valve-operating member is located.
- the valve-operating member also includes a stem 55 and a handle (not shown) such as 31 shown in FIG. 2 provided for rotating the stem whereby the head 5% can be moved between the position shown in full lines in FIG. 4 and the position shown chain-dotted in FIG. 4.
- the valve of FIG. 4 also includes a tube 56 leading to an outlet 57.
- the inner ends of the tubes 52, 53 and 56 can be considered as constituting valve seats and the head 54 of the valve-operating member is formed with a peripheral recess 58 which extends through an angle of A projecting member (not shown) fixed to the stem 55 is arranged to engage stops carried by the valve housing whereby the operating member is prevented from being rotated anticlockwise beyond the position shownin full lines in FIG. 4 and prevented from being rotated clockwise beyond the position shown chain-dotted in FIG. 4.
- the head 54 In normal operation of the boiler the head 54 is in the position shown in FIG. 4 whereby the interior of the boiler communicates with the float chamber 12 through the recess 58 in the periphery of the head 54.
- the valve-operating member When it is required to clean the pipe 13 extending between the float chamber 12 and the interior of boiler, the valve-operating member is rotated in the clockwise direction viewed in FIG. 4 whereby the recess 58 is moved into the position shown in chain-dotted lines and the connection to the interior of the boiler is shut off and communication between the float chamber 12 and exhaust is established.
- the float chamber 12 is at all times in communication with either the interior of the boiler or exhaust and that, when the head 54 is not in one of itslimiting positions, the interior of the boiler can communicate directly with exhaust through the recess 58.
- valve shown in FIG. 4 thus operates in substantially the same way as the valve shown in FIG. 2.
- Each float chamber 12 may include a level-indicating device such as a sight glass (not shown). Alternatively there may be a separate level-indicating device which is connected to the interior of the boiler through a valve the construction of which is either as shown in FIG. 2 or as shown in FIG. 4.
- valve comprising a valve body containing a chamber, a pair of valve seats within the chamber, which valve seats are located between the interior of the chamber and connections to the vessel and to exhaust, a connection to the control device leading from the valve chamber between the valve seats, and a valve-operating member comprising a stem and a head, the head being movable between a pair of limiting positions in each of which it is in engagement with one of the valve seats to close either the connection to the vessel or the connection to exhaust and the valve head being arranged so that, in each limiting position and in any intermediate position, it does not close the connection to the control device.
- valve chamber is of elongated form with the valve seats located one at each end of the chamber and the valve-operating member is movable axially of the chamber.
- valve chamber is of generally cylindrical form with the valve seats located diametrically opposite each other, the head of the valve-operating member being rotatable between its limiting positions and stop means being provided for preventing movement of the operating member beyond its limiting positions.
- Equipment according to claim 1 wherein the vessel is a steam boiler and there are a pair of control devices and a pipe between each control device and the boiler with said valve located in each pipe between the boiler and the control device.
- manually operable valve located in the pipe between the boiler and the T-junction, said manually operable valve including an operating member movable from an open position in which the boiler communicates with the two pipes leading from the T-junction and a closed position in which the connection from the boiler is shutoff but an exhaust outlet is opened whereby the two pipes leading to the T-junction are in communication with the atmosphere.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Non-Electrical Variables (AREA)
- Float Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB43378/67A GB1207175A (en) | 1967-09-23 | 1967-09-23 | Improvements in or relating to valve systems |
Publications (1)
Publication Number | Publication Date |
---|---|
US3563268A true US3563268A (en) | 1971-02-16 |
Family
ID=10428506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US761650A Expired - Lifetime US3563268A (en) | 1967-09-23 | 1968-09-23 | Valve systems |
Country Status (7)
Country | Link |
---|---|
US (1) | US3563268A (en) |
CH (1) | CH506021A (en) |
DE (1) | DE1775774A1 (en) |
DK (1) | DK120999B (en) |
FR (1) | FR1580768A (en) |
GB (1) | GB1207175A (en) |
SE (1) | SE339236B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4770209A (en) * | 1987-07-23 | 1988-09-13 | Mac Valves, Inc. | Valve base with integral flow controls |
US4838309A (en) * | 1985-12-30 | 1989-06-13 | Ssi Medical Services, Inc. | Variable flow gas valve |
US4949413A (en) * | 1985-12-30 | 1990-08-21 | Ssi Medical Services, Inc. | Low air loss bed |
US5051673A (en) * | 1985-12-30 | 1991-09-24 | Goodwin Vernon L | Patient support structure |
US5349983A (en) * | 1993-07-07 | 1994-09-27 | Ssi Medical Services, Inc. | Proportional control valve for patient support system |
US5619988A (en) * | 1995-10-05 | 1997-04-15 | Minnesota Mining And Manufacturing Company | First stage pressure regulator for emergency breathing apparatus |
WO2014206520A1 (en) * | 2013-06-24 | 2014-12-31 | Gea Tuchenhagen Gmbh | Aseptic valve assembly, system for conducting a product, and method for operating a system |
US20190093774A1 (en) * | 2017-01-31 | 2019-03-28 | Fujikin Incorporated | Switching valve |
CN110454589A (en) * | 2019-09-11 | 2019-11-15 | 浙江华越环境科技有限公司 | A kind of dump valve for VOCS thermal oxidation furnace admission line |
US11731219B2 (en) * | 2019-12-19 | 2023-08-22 | Saint-Gobain Performance Plastics Corporation | Poppet, assembly, and methods of assembling and using the same |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US210261A (en) * | 1878-11-26 | Improvement in water-gages for steam-boilers | ||
US598572A (en) * | 1898-02-08 | turner | ||
US682162A (en) * | 1901-01-29 | 1901-09-10 | William H Bailey | Valve for water-gages. |
US1253989A (en) * | 1917-02-27 | 1918-01-15 | Charles L Mccrae | Steam-boiler regulator. |
US1602443A (en) * | 1924-05-02 | 1926-10-12 | Harry J Moyer | Seatless blow-off valve |
US1793869A (en) * | 1927-10-21 | 1931-02-24 | Frank M Roby | Condition indicator for low-water alarms |
GB499047A (en) * | 1937-08-09 | 1939-01-18 | Douglas George Erskine Cowper | Improvements in and relating to water gauge column standards for steam boilers and the like |
US2189473A (en) * | 1938-04-20 | 1940-02-06 | Harvey W Poor | Steam and water leakage revealing structure for steam boilers |
GB877445A (en) * | 1959-07-14 | 1961-09-13 | Trist & Co Ltd Ronald | Improvements relating to boilers and similar apparatus with auxiliary chambers housing level controllers or other mechanism |
-
1967
- 1967-09-23 GB GB43378/67A patent/GB1207175A/en not_active Expired
-
1968
- 1968-09-21 DE DE19681775774 patent/DE1775774A1/en active Pending
- 1968-09-23 SE SE12811/68A patent/SE339236B/xx unknown
- 1968-09-23 DK DK456468AA patent/DK120999B/en unknown
- 1968-09-23 US US761650A patent/US3563268A/en not_active Expired - Lifetime
- 1968-09-23 CH CH1421468A patent/CH506021A/en not_active IP Right Cessation
- 1968-09-23 FR FR1580768D patent/FR1580768A/fr not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US210261A (en) * | 1878-11-26 | Improvement in water-gages for steam-boilers | ||
US598572A (en) * | 1898-02-08 | turner | ||
US682162A (en) * | 1901-01-29 | 1901-09-10 | William H Bailey | Valve for water-gages. |
US1253989A (en) * | 1917-02-27 | 1918-01-15 | Charles L Mccrae | Steam-boiler regulator. |
US1602443A (en) * | 1924-05-02 | 1926-10-12 | Harry J Moyer | Seatless blow-off valve |
US1793869A (en) * | 1927-10-21 | 1931-02-24 | Frank M Roby | Condition indicator for low-water alarms |
GB499047A (en) * | 1937-08-09 | 1939-01-18 | Douglas George Erskine Cowper | Improvements in and relating to water gauge column standards for steam boilers and the like |
US2189473A (en) * | 1938-04-20 | 1940-02-06 | Harvey W Poor | Steam and water leakage revealing structure for steam boilers |
GB877445A (en) * | 1959-07-14 | 1961-09-13 | Trist & Co Ltd Ronald | Improvements relating to boilers and similar apparatus with auxiliary chambers housing level controllers or other mechanism |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4838309A (en) * | 1985-12-30 | 1989-06-13 | Ssi Medical Services, Inc. | Variable flow gas valve |
US4949413A (en) * | 1985-12-30 | 1990-08-21 | Ssi Medical Services, Inc. | Low air loss bed |
US5051673A (en) * | 1985-12-30 | 1991-09-24 | Goodwin Vernon L | Patient support structure |
US4770209A (en) * | 1987-07-23 | 1988-09-13 | Mac Valves, Inc. | Valve base with integral flow controls |
US5349983A (en) * | 1993-07-07 | 1994-09-27 | Ssi Medical Services, Inc. | Proportional control valve for patient support system |
US5619988A (en) * | 1995-10-05 | 1997-04-15 | Minnesota Mining And Manufacturing Company | First stage pressure regulator for emergency breathing apparatus |
WO2014206520A1 (en) * | 2013-06-24 | 2014-12-31 | Gea Tuchenhagen Gmbh | Aseptic valve assembly, system for conducting a product, and method for operating a system |
CN105492807A (en) * | 2013-06-24 | 2016-04-13 | 基伊埃图亨哈根有限公司 | Aseptic valve assembly, system for conducting a product, and method for operating a system |
US9863540B2 (en) | 2013-06-24 | 2018-01-09 | Gea Tuchenhagen Gmbh | Aseptic valve assembly, system for conducting a product, and method for operating a system |
CN105492807B (en) * | 2013-06-24 | 2018-05-08 | 基伊埃图亨哈根有限公司 | Sterile valve gear |
US20190093774A1 (en) * | 2017-01-31 | 2019-03-28 | Fujikin Incorporated | Switching valve |
US10738898B2 (en) * | 2017-01-31 | 2020-08-11 | Fujikin Incorporated | Switching valve |
CN110454589A (en) * | 2019-09-11 | 2019-11-15 | 浙江华越环境科技有限公司 | A kind of dump valve for VOCS thermal oxidation furnace admission line |
CN110454589B (en) * | 2019-09-11 | 2024-05-14 | 浙江华跃环境科技有限公司 | Emergency discharge valve for VOCS thermal oxidation furnace air inlet pipeline |
US11731219B2 (en) * | 2019-12-19 | 2023-08-22 | Saint-Gobain Performance Plastics Corporation | Poppet, assembly, and methods of assembling and using the same |
Also Published As
Publication number | Publication date |
---|---|
DK120999B (en) | 1971-08-16 |
DE1775774A1 (en) | 1971-10-14 |
CH506021A (en) | 1971-04-15 |
FR1580768A (en) | 1969-09-05 |
GB1207175A (en) | 1970-09-30 |
SE339236B (en) | 1971-10-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: THORN EMI INDUSTRIAL BOILERS LIMITED Free format text: CHANGE OF NAME;ASSIGNOR:PARKINSON COWAN GWB LIMITED;REEL/FRAME:004118/0571 Effective date: 19820621 Owner name: THORN EMI INDUSTRIAL BOILERS LIMITED P.O. BOX 4, B Free format text: LICENSE;ASSIGNOR:THORN EMI ENERGY DEVELOPMENT LIMITED;REEL/FRAME:004131/0923 Effective date: 19820506 Owner name: THORN EMI ENERGY DEVELOPMENT LIMITED P.O. BOX 4, B Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:THORN EMI INDUSTRIAL BOILERS LIMITED (FORMERLY PARKINSONCOWAN G.W.B. LIMITED);REEL/FRAME:004131/0921 Effective date: 19820506 Owner name: G.W.B. BOILERS LIMITED P.O. BOX 4, BURTON WORKS, D Free format text: LICENSE;ASSIGNOR:THORN EMI INDUSTRIAL BOILERS LIMITED;REEL/FRAME:004131/0919 Effective date: 19820506 Owner name: THORN EMI INDUSTRIAL BOILERS LIMITED P.O. BOAX 4, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:G.W.B. BOILERS LIMITED;REEL/FRAME:004131/0917 Effective date: 19820506 |
|
AS | Assignment |
Owner name: THORN EMI ENERGY DEVELOPMENTS LIMITED BOX 4 BURTON Free format text: TO CORRECT THE NAME OF THE ASSIGNEE RECORDED FEBRUARY 3, 1983 AT REEL 4131, FRAMES 921-924,;ASSIGNOR:THORN EMI INDUSTRIAL BOILERS LIMITED.;REEL/FRAME:004186/0332 Effective date: 19831012 |