WO2014094656A1 - Ensemble disque avec trou de branchement pour dispositif de commande d'écoulement de fluide - Google Patents

Ensemble disque avec trou de branchement pour dispositif de commande d'écoulement de fluide Download PDF

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Publication number
WO2014094656A1
WO2014094656A1 PCT/CN2013/090118 CN2013090118W WO2014094656A1 WO 2014094656 A1 WO2014094656 A1 WO 2014094656A1 CN 2013090118 W CN2013090118 W CN 2013090118W WO 2014094656 A1 WO2014094656 A1 WO 2014094656A1
Authority
WO
WIPO (PCT)
Prior art keywords
disc
assembly
disc holder
branch passage
annular
Prior art date
Application number
PCT/CN2013/090118
Other languages
English (en)
Inventor
Yunxia HAN
Yantao SUN
Qin Zhang
Original Assignee
Fisher Regulators (Shanghai) Co., Ltd.
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 Fisher Regulators (Shanghai) Co., Ltd. filed Critical Fisher Regulators (Shanghai) Co., Ltd.
Priority to BR112015014901A priority Critical patent/BR112015014901A2/pt
Priority to RU2015128610A priority patent/RU2639987C2/ru
Publication of WO2014094656A1 publication Critical patent/WO2014094656A1/fr

Links

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
    • 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
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
    • F16K31/165—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a diaphragm
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0675—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever
    • G05D16/0683—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever using a spring-loaded membrane
    • G05D16/0688—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever using a spring-loaded membrane characterised by the form of the obturator

Definitions

  • the present disclosure is directed to a disc assembly for a fluid flow control device and, more particularly, to a disc assembly of a control element for a fluid regulator.
  • gas regulators are implemented into these distribution systems to ensure that the delivered gas meets the requirements of the end-user facilities.
  • Conventional gas regulators generally include a closed- loop control actuator for sensing and controlling the pressure of the delivered gas.
  • control elements for conventional regulators can typically include a disc assembly 10 for opening and closing the regulator valve port 20, thereby adjusting the flow of gas provided to the downstream user.
  • a conventional disc assembly 10 includes a metal disc holder 12 that accommodates a rubber disc member 14, which serve to provide a fluid tight seal with the regulator valve port 20 in the closed position.
  • FIG. 2 illustrates one possible result with a side edge portion A of the disc member 14 advanced out of the disc holder 12 relative to the remainder of the disc member 14. This ultimately results in the sealing face of the disc member 14 being disposed at an angle relative to the valve port 20, which can affect the intended operation of the device.
  • a fluid flow control device including a valve body and an actuator.
  • the valve body has an inlet, an outlet, and a valve port disposed between the inlet and the outlet.
  • the actuator is coupled to the valve body for controlling the flow of fluid from the inlet to the outlet via the valve port and has a disc assembly and a diaphragm operably coupled to the disc assembly.
  • the disc assembly is disposed in the valve body and adapted for displacement relative to the valve port in response to pressure changes sensed by the diaphragm.
  • the disc assembly includes an annular disc member, a cylindrical disc holder, a relief bore, an annular recess, and at least one branch passage.
  • the cylindrical disc holder has a fist side facing toward the valve port and a second side facing away from the valve port.
  • the relief bore is formed in the first side of the disc holder along a central axis of the disc holder.
  • the annular recess is formed in the first side of the disc holder and is disposed coaxially with the relief bore and accommodating at least a portion of the annular disc member.
  • the at least one branch passage is formed in the disc holder and provides fluid communication between the relief bore and the annular recess, such that any pressurized fluid in the valve body that accumulates the annular recess between the annular disc member and the disc holder can be relieved through the relief bore via the branch passage.
  • a disc assembly that includes an annular disc member, a cylindrical disc holder, a relief bore, an annular recess, and at least one branch passage.
  • the cylindrical disc holder has a fist side facing toward the valve port and a second side facing away from the valve port.
  • the relief bore is formed in the first side of the disc holder along a central axis of the disc holder.
  • the annular recess is formed in the first side of the disc holder and is disposed coaxially with the relief bore and accommodating at least a portion of the annular disc member.
  • the at least one branch passage is formed in the disc holder and provides fluid communication between the relief bore and the annular recess, such that any pressurized fluid in the valve body that accumulates the annular recess between the annular disc member and the disc holder can be relieved through the relief bore via the branch passage.
  • Still another aspect of the present disclosure provides a disc assembly for a fluid flow control device including a disc member, a disc holder, a recess, and at least one fluid passageway.
  • the disc holder has a fist side and a second side.
  • the recess is formed in the first side of the disc holder and accommodates at least a portion of the disc member.
  • the at least one fluid passageway is formed in the disc holder and extends between the recess and an outer surface of the disc holder such that during use pressurized fluid that accumulates in the recess between the disc member and the disc holder can be relieved through the fluid passageway.
  • Fig. 1. is side cross-sectional side view of one conventional disc assembly positioned relative to a valve port of a fluid regulator, for example.
  • Fig. 2 is a side perspective view of the conventional disc assembly of Fig. 1 illustrating the disc member in a partially pushed out configuration, which can result from use in high temperature applications.
  • Fig. 3 is a side cross-sectional side view of one example of a fluid flow control device including a disc assembly constructed in accordance with the principles of the present disclosure.
  • Fig. 4 is a side cross-sectional side view of one example of the disc assembly of Fig. 3.
  • Fig. 5 is a cross-sectional side view of an alternative disc assembly constructed in accordance with the present disclosure.
  • the present disclosure is directed to a disc assembly and a fluid flow control device equipped with a disc assembly, wherein the disc assembly is designed and configured to minimize and/or prevent pressure accumulation behind the disc member in the disc holder.
  • the disc assembly is designed and configured to minimize and/or prevent pressure accumulation behind the disc member in the disc holder.
  • this is achieved by providing the disc holder with a fluid passageway (e.g., a relief bore) that is in fluid communication with a backside of the disc member. So configured, any pressure accumulated behind the disc member can be relieved through the fluid passageway without forcing the disc member out of its intended position relative to the disc holder.
  • a fluid passageway e.g., a relief bore
  • Fig. 3 depicts a gas regulator 100 constructed in accordance with one example of the present disclosure.
  • the gas regulator 100 generally comprises an actuator 102 and a regulator valve 104.
  • the regulator valve 104 includes an inlet 106 for receiving gas from a gas distribution system, for example, and an outlet 108 for delivering gas to a facility having one or more appliances, for example.
  • the actuator 102 is coupled to the regulator valve 104 and includes a control assembly 122 having a control element 127 equipped with a disc assembly 200 constructed in accordance with the present disclosure.
  • the control assembly 122 senses the pressure at the outlet 108 of the regulator valve 104, i.e., the outlet pressure, via an external piping arrangement, for example, and controls a position of the control element 127 such that the outlet pressure approximately equals a predetermined control pressure. Additionally, upon the occurrence of a failure in the system, the regulator 100 can perform a relief function by way of an exhaust style relief valve 121, as known in the art.
  • the regulator valve 104 defines a throat 110 and a valve mouth 112.
  • the valve mouth 112 defines an opening 114 disposed along an axis that is generally perpendicular to an axis of the inlet 106 and the outlet 108.
  • the throat 110 is disposed between the inlet 106 and the outlet 108, and accommodates a valve port 136.
  • the valve port 136 includes an inlet 150, an outlet 152, and an elongated orifice 148 extending between the inlet 150 and the outlet 152. Gas must travel through the orifice 148 in the valve port 136 to travel between the inlet 106 and the outlet 108 of the regulator valve 104.
  • the inlet 150 further defines a seat ring 151, against which the disc assembly 200 of the control element 127 engages when in a closed position.
  • the disc assembly 200 as shown, resides within the regulator valve 104 at a position between the outlet 108 and the valve port 136 throughout operation of the device 100.
  • Fig. 4 depicts the disc assembly 200 of Fig. 3 in more detail.
  • the disc assembly 200 includes a disc member 202, a disc holder 204, and a pin 206, all positioned co axial ly on a central axis CA of the disc assembly 202.
  • the disc member 202 includes an annular disc member having a generally square or rectangular cross-sectional profile.
  • the disc member 202 can be constructed of an elastomeric material, a rubber material, or any other material suitable for any given intended application.
  • the disc member 202 includes a generally planar seating surface 208 that is adapted to seat against the seat ring 151 of the valve port 136 of the regulator 100 depicted in Fig. 3, for example.
  • the seating surface 208 and the seat ring 151 are disposed in parallel planes PI, P2, respectively, such that the seating surface 208 can provide a reliable seal with the seat ring 1 1. So configured, when the disc member 202 is in the closed position depicted in Fig. 4, the parallel planes PI, P2 are co-planar.
  • the disc holder 204 of the disc assembly 200 includes a cylindrical shaped member constructed of a metal material such as stainless steel, for example. As illustrated, the disc holder 204 includes a first side 210 facing the valve port 136 in Fig. 4 and, more particularly, the inlet 150 of the valve port 136, and a second side 212 facing away from the valve port 136.
  • the pin 206 of the disc assembly 200 is attached to and extends away from the second side 212 of the disc holder 202 and, as depicted in Fig. 3, is adapted to be coupled to the control element 127 of a fluid flow control device.
  • the disc holder 204 further defines a relief bore 214, an annular recess 216, and at least one branch recess 218.
  • the relief bore 214 and annular recess 216 are each formed in the first side 210 of the disc holder 204.
  • the relief bore 214 could be formed in the second side 212 of the disc holder 204, as will be discussed below.
  • the annular recess 216 of the disc holder 204 in Fig. 4 is sized and configured to accommodate at least a portion of the disc member 202, as shown.
  • the annular recess 216 includes a square or rectangular cross-sectional profile that resembles the square or rectangular cross-sectional profile of the disc member 202. More specifically, the cross-sectional profile of the annular recess 216 in Fig. 4 includes an inner cylindrical surface 217, an outer cylindrical surface 219, and a radial surface 221 extending between the inner and outer surfaces 217, 219. The radial surface 221, and therefore the annular recess 216, has a radial dimension R. Each of the inner and outer cylindrical surfaces 217, 219, and therefore the annular recess 216, has a depth dimension D. In the version depicted in Fig.
  • the radial dimension R of the annular recess 216 can be slightly larger than a corresponding dimension of the disc member 202, while the depth dimension D of the annular recess 216 can be slightly smaller than a corresponding dimension of the disc member 202.
  • This configuration facilitates insertion of the disc member 202 into the annular recess 216 during assembly while also allowing a portion of the disc member 202 adjacent to the seating surface 208 to be exposed outside of the recess 216.
  • an adhesive or some other fastener for example, can be used to assist with retaining the disc member 202 in the annular recess 216.
  • the cross-sectional profiles of the annular recess 216 and disc member 202 can have identical dimensions.
  • a radial dimension R of the cross-sectional profile of the annular recess 216 can be slightly smaller than a corresponding dimension of the disc member 202, thereby facilitating a friction fit with the disc member 202.
  • Such a friction fit could optionally eliminate the use of adhesive or another fastener to retain the disc member 202 in the annular recess 216.
  • the disc holder 204 of the presently disclosed disc assembly 200 further includes the relief bore 214 and the branch passage 218, which in combination can be referred herein as a fluid passageway.
  • the relief bore 214 includes a cylindrical blind bore formed in the first side of the disc holder 204 at a location along the central axis CA of the disc assembly 200 and has a depth dimension L that is larger than the depth dimension D of the annular recess 216. So configured, the annular recess 216 and disc member 202 of the presently disclosed disc assembly 200 surround at least a portion of the relief bore 214 that is disposed adjacent to the first side 210 of the disc holder 204.
  • the branch passage 218 of the present version includes a cylindrical through-bore that provides fluid communication between the relief bore 214 and annular recess 216. As depicted, the branch passage 218 is formed in the disc holder 204 along a branch axis BA that is disposed at an angle a relative to the central axis CA of the disc assembly 200.
  • the angle a can be approximately 40°.
  • the angle a of the branch passage 218 can be generally any angle suitable for the intended purpose.
  • the angle a could be any angle between approximately 5° and approximately 90° or between approximately 30° and approximately 60°.
  • the branch passage 218 of the presently disclosed version of the disc assembly 200 includes a first end 230 communicating with the annular recess
  • the branch passage 218 of the presently disclosed version actually breaks through or penetrates to the annular recess 216 at a portion of the inner cylindrical wall 217 and at a portion of the radial wall 221 of the annular recess 216.
  • the first end 230 of the branch passage 218 could break through or penetrate into the annular recess 216 through only the radial wall 221 or only the inner cylindrical wall 217.
  • the disc assembly 200 of the present disclosure includes at least one branch passage 218 extending between the annular recess 216 and the relief bore 214.
  • Fig. 4 only depicts a single branch passage 218, an alternative version of the disc assembly 200 in Fig. 4 can have a plurality of branch passages 218.
  • Each of the plurality of branch passages 218 can be configured generally identical to that depicted in Fig. 4 and spaced circumferentially about the relief bore 214. In other versions, some of the plurality of branch passages 218 could be configured different from others.
  • one version of the disc assembly 200 could include a plurality of branch passages 218 that have first ends 230 that break through or penetrate the annular recess 216 only through the radial wall 221 and another plurality of branch passages 218 that break through or penetrate the annular recess 216 only through the inner cylindrical wall 217.
  • Other configurations of course can be utilized and are within the scope of this disclosure.
  • the relief bore 214 of the version of the disc assembly 200 in Fig. 4 has been described and depicted as being formed in the first side 210 of the disc holder 202
  • other versions of the disc assembly 200 can include the relief bore 214 formed in the second side 212 or even through a perimeter sidewall of the disc holder 204.
  • the relief bore 214 could simply be an extension of the branch passage 218 such that the relief bore 214 extends away from the branch passage 218 and annular recess 216, yet along the branch axis BA, through the second side 212 of the disc holder 204, and ultimately out of the sidewall of the pin 206, for example.
  • the disc member 202 and recess 216 could be cylindrical rather than annular because the relief bore 214 has been displaced to the second side 212 of the holder 204.
  • Other variations are of course intended to be within the scope of this disclosure.
  • the disc assembly 200 of the present disclosure is arranged and configured to relieve any fluid pressure that might otherwise accumulate in the annular recess 216 behind the disc member 202.
  • inlet fluid pressure surrounding the disc assembly 200 can penetrate the disc holder 204 between the disc member and the outer cylindrical wall 219 of the annular recess 216.
  • such pressure can iurther penetrate between the disc member 202 and the radial wall 217 of the annular recess 216.
  • the fluid follows the path of least resistance and naturally flows to the branch passage 218 and immediately to the relief bore 214, where it can be exhausted out of the disc holder 204.
  • the branch passage 218 and relief bore 214 in combination define a fluid passageway formed in the disc holder 204 of the present disclosure.
  • This pressure relief function helps ensure that the disc member 202 is firmly retained in the annular recess 216 in its desired position and minimizes or eliminates the possibility that the fluid pressure will force the disc member 202 out of the disc holder 204. This is especially advantageous when used in the fluid regulator 100 depicted in Fig. 3 under high pressure (e.g., greater than or equal to 150 psi) and high temperature (e.g., greater than or equal to 80°C) conditions.
  • the regulator 100 includes the actuator 102 and the regulator valve 104.
  • the actuator 102 includes a housing 116 and the control assembly 122.
  • the housing 116 includes an upper housing component 116a and a lower housing component 116b secured together with a plurality of fasteners, for example.
  • the lower housing component 116b defines a control cavity 118 and an actuator mouth 120.
  • the actuator mouth 120 is connected to the valve mouth 112 of the regulator valve 104 to provide fluid communication between the actuator 102 and the regulator valve 104.
  • the upper housing component 116a defines a relief cavity 134 and an exhaust port 156.
  • the upper housing component 116a further defines a tower portion
  • the control assembly 122 includes a diaphragm subassembly 121 and the control element 127.
  • the diaphragm subassembly 121 generally includes a diaphragm 124, a piston 132, and a control spring 130. More particularly, the diaphragm 124 includes a disc-shaped diaphragm defining an opening 144 through a central portion thereof.
  • the diaphragm 124 is constructed of a flexible, substantially air-tight, material and its periphery is sealingly secured between the upper and lower housing components 116a, 116b of the housing 116. The diaphragm 124 therefore separates the relief cavity 134 from the control cavity 118.
  • the piston 132 of the disclosed embodiment includes a generally elongated rod-shaped member having a coupler 135 which connects to a portion of the disc subassembly 123 to enable attachment between the diaphragm subassembly 121 and the disc subassembly 123, as will be described.
  • the control spring 130 is disposed on top of the diaphragm 124 and within the tower portion 158 of the upper housing component 116a.
  • a control spring seat 160 is threaded into the tower portion 158 and compresses the control spring 130.
  • the control spring 130 includes a compression coil spring. Accordingly, the control spring 130 is grounded against the upper housing component 116a and applies a downward force to the diaphragm 124.
  • the force generated by the control spring 130 is adjustable by adjusting the position of the control spring seat 160 in the tower portion 158, and therefore the control pressure of the regulator 100 is also adjustable.
  • the control spring 130 acts against the pressure in the control cavity 118, which is sensed by the diaphragm 124. As stated, this pressure is the same pressure as that which exists at the outlet 108 of the regulator valve 104. Accordingly, the force applied by the control spring 130 sets the outlet pressure to a desired, or control pressure for the regulator 100.
  • the diaphragm subassembly 121 is operably coupled to the disc subassembly 123, as mentioned above, via the coupler 135.
  • the disc subassembly 123 includes a control arm 126 and a stem guide 162.
  • the control arm 126 includes a stem 178, a lever 180, and the control element 127.
  • the control element 127 of the disclosed embodiment includes the disc assembly
  • the stem 178, lever 180, and disc assembly 200 are constructed separately and assembled to form the control arm 126.
  • the stem 178 is a generally linear rod having a nose 178a and a recess 178b, which in the disclosed embodiment is generally rectangular.
  • the lever 180 is a slightly curved rod and includes a fulcrum end 180a and a free end 180b.
  • the fulcrum end 180a includes an aperture 184 receiving a pivot pin 186 carried by the lower housing component 116b.
  • the fulcrum end 180a also includes a knuckle 187 having an elliptical cross-section and disposed within the recess 178b of the stem 178.
  • the free end 180b is received between a top portion 135a and a bottom portion 135b of the coupler 135 of the piston 132.
  • the coupler 135 operably connects the disc subassembly 123 to the diaphragm subassembly 121.
  • the stem guide 162 includes a generally cylindrical outer portion 162a and a generally cylindrical inner portion 162b.
  • the outer portion 162a of the stem guide 162 is sized and configured to fit within the mouths 112, 120 of the regulator valve 104 and lower housing component 116b, respectively.
  • the inner portion 162b is sized and configured to slidably retain the stem 178 of the control arm 126.
  • the stem guide 162 serves to maintain the alignment of the regulator valve 104, the actuator housing 116, and the control assembly 122, and more particularly, the stem 178 of the control arm 126 of the control assembly 122.
  • Fig. 3 depicts the regulator 100 of the present disclosure with the disc assembly
  • the disc assembly 200 in a closed position. Therefore, the disc assembly 200 sealingly engages the seat ring 151 at the inlet 150 of the valve port 136. So configured, gas does not flow through the valve port 136 and the regulator valve 104.
  • This configuration is achieved because the outlet pressure, which corresponds to the pressure in the control cavity 118 of the housing 116 and sensed by the diaphragm 124, is greater than the force applied by the control spring 130. Accordingly, the outlet pressure forces the diaphragm 124, the piston 132, and the disc assembly 200 into the closed position.
  • pressure within the regulator valve 104 surrounding the disc assembly 200 under certain conditions, can penetrate the disc assembly 200, as discussed above with reference to Fig. 4, for example.
  • the relief bore 214 and branch passage 218 ensure that such pressure penetration does not detrimentally affect the construct of the disc assembly 200.
  • the appliance draws gas flow from the control cavity 118 of the regulator 100, thereby reducing the pressure that is sensed by the diaphragm 124.
  • a force imbalance occurs between a control spring force and an outlet pressure force on the diaphragm 124 such that the control spring 130 expands and displaces the diaphragm 124 and piston 132 downward, relative to the housing 116.
  • the gas distribution system is adapted to deliver gas to the downstream appliance through the regulator valve 104 at a control pressure that is set by the control spring 130. Additionally, the diaphragm subassembly 121 continues to sense the outlet pressure of the regulator valve 104. As long as the outlet pressure remains approximately equal to the control pressure, the control assembly 122 will keep the disc assembly 200 in this same general position. However, if the outlet flow, i.e., the demand, decreases, thereby increasing the outlet pressure above the control pressure set by the control spring 130, the diaphragm 124 senses the increased outlet pressure and moves upward against the bias of the control spring 130.
  • the outlet flow i.e., the demand
  • the disclosed disc assembly 200 and regulator 100 equipped with the disc assembly 200 can advantageously operate with a high degree of accuracy and increased longevity under many operating conditions including those with high pressures and temperatures that would have compromised the integrity of prior art disc assemblies. This high degree of accuracy is achievable by eliminating any detrimental effect of accumulate pressure behind the disc member.
  • the disc member 202 of the present disclosure is annular in shape such that it has a smaller cross-sectional area than the conventional disc member depicted in Figs. 1 and 2, for example. That is, instead of having a circular cross-sectional area, the surface of the disc member 202 of the present disclosure that faces the radial wall 221 of the recess 216 of the disc holder 204 is annular or ring-shaped. This smaller area reduces the available area against which pressure accumulation can act, thereby also reducing the potential effects thereof. While the disc member 202 of the present disclosure has been described as being annular in shape, with slight modifications, the pressure relief concepts disclosed herein can be equally applicable to cylindrically shaped disc members such as that disclosed in Figs. 1 and 2. For example, the version depicted in Fig. 5 could easily be modified to include a cylindrical, as opposed to an annular, disc member.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Safety Valves (AREA)
  • Valve Housings (AREA)
  • Control Of Fluid Pressure (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

L'invention concerne un ensemble disque (200) pour un dispositif de commande d'écoulement de fluide qui comprend un élément de clapet annulaire (202), un porte-obturateur (204), un alésage de décharge (214), au moins un passage de branchement (218) et un renfoncement annulaire (216) constitué dans le porte-obturateur (204). L'alésage de décharge (214) est pratiqué dans un premier côté (210) du porte-obturateur (204) parallèlement à l'axe central de l'ensemble (200). Le renfoncement annulaire (216) est constitué dans le premier côté (210) du porte-obturateur (204) et disposé coaxialement à l'alésage de décharge (214) pour loger au moins une partie de l'élément de clapet annulaire (202). Ledit passage de branchement (218) est pratiqué dans le porte-obturateur (204) et assure une communication fluidique entre l'alésage de décharge (214) et le renfoncement annulaire (216) de telle sorte qu'en service le fluide sous pression qui s'accumule dans le renfoncement annulaire (216) entre l'élément de clapet (202) et le porte-obturateur (204) peut se décharger par l'alésage de décharge (214) via le passage de branchement (218).
PCT/CN2013/090118 2012-12-21 2013-12-20 Ensemble disque avec trou de branchement pour dispositif de commande d'écoulement de fluide WO2014094656A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112015014901A BR112015014901A2 (pt) 2012-12-21 2013-12-20 conjunto de disco com furo de ramificação para dispositivo de controle de fluxo de fluido
RU2015128610A RU2639987C2 (ru) 2012-12-21 2013-12-20 Тарелочный узел с боковым стволом для устройства регулирования потока текучей среды

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210560153.2 2012-12-21
CN201210560153.2A CN103883740B (zh) 2012-12-21 2012-12-21 用于流体流动控制装置的具有支路孔的阀盘组件

Publications (1)

Publication Number Publication Date
WO2014094656A1 true WO2014094656A1 (fr) 2014-06-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/090118 WO2014094656A1 (fr) 2012-12-21 2013-12-20 Ensemble disque avec trou de branchement pour dispositif de commande d'écoulement de fluide

Country Status (4)

Country Link
CN (1) CN103883740B (fr)
BR (1) BR112015014901A2 (fr)
RU (1) RU2639987C2 (fr)
WO (1) WO2014094656A1 (fr)

Cited By (1)

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CN103883740B (zh) 2017-12-12
RU2639987C2 (ru) 2017-12-25
RU2015128610A (ru) 2017-01-30
BR112015014901A2 (pt) 2017-07-11

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