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
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
  • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
  • F16K17/19—Equalising valves predominantly for tanks
  • F16K17/196—Equalising valves predominantly for tanks 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
  • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
  • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
  • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
• • 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
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
  • F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member 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
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
  • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of 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
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
  • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
  • F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
• • 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
  • F16K15/00—Check valves
  • F16K15/02—Check valves with guided rigid valve members
  • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
  • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
  • F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
  • F16K15/038—Dual valve members with hinges crossing the flow line substantially diametrical having a common hinge
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
  • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
  • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
  • F16K17/0413—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 in the form of closure plates
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
  • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
  • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
  • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
  • E21B2200/05—Flapper valves

Definitions

• the present disclosure is related to a valve. More particularly, the disclosure is related to a valve for controlling a pressure difference between fluids on an inside and on an outside of a wall defining a portion of a chamber.
• the chamber in which the valve is to be used may typically be a fluid conduit or a vessel.
• the fluid within the chamber may have a pressure being higher or lower than an ambient pressure.
• the chamber may for example be a "vacuum" chamber or a pressure chamber.
• the chamber is operatively connected to a pressure-generating device for providing the desired pressure.
• the pressure generating device will be denoted pump, although the pressure-generating device may also be provided by a liquid column.
• a pump device for providing a vacuum or positive pressure may be controlled by means of for example a pressure sensor communicating with a control device activating or deactivating the pump in response to a pre-set value.
• a control device or a sensor may be controlled by means of for example a pressure sensor communicating with a control device activating or deactivating the pump in response to a pre-set value.
• a high-capacity pump may result in an implosion of a chamber, or explosion of a pressure chamber.
• US2010/0148107 Al discloses a valve arrangement having an annular housing with valve seat and a two-part valve plate that is rotatable about an axis.
• the seat is in the form of a disk including two adjacent openings with a web between and the axis is parallel to the web.
• the two parts of the valve plate are next to each other with their planes parallel and offset in a perpendicular direction. They are connected to each other through one of the openings by a connection piece extending through the one opening.
• the valve plate parts are respectively positioned on opposite sides of the valve seat and cover and seal the respective openings due to a seal that is between the valve plate parts and the valve seat.
• valve configured for pressure relief or "puncture" a chamber when a pressure within the chamber raises above or becomes lower than a predetermined value.
• a fully mechanical and autonomous valve that is operationally reliable, and that is retrofittable and provides an instantaneous pressure relief at a pre-set value.
• the invention has for its object to remedy or to reduce at least one of the drawbacks of the prior art, or at least provide a useful alternative to prior art.
• a valve for controlling a pressure difference between fluids on an inside and on an outside of a wall defining a portion of a chamber comprising:
• a lever having a first end portion and a second end portion, and a fulcrum element arranged between the first end portion and the second end portion,
• first cap operatively connected to the first end portion of the lever, the first cap having a sealing surface facing the lever and configured for sealing a first aperture in a portion of the wall of the chamber when the valve is in a closed position;
• a second cap operatively connected to the second end portion of the lever, the second cap having a sealing surface facing away from the lever and configured for sealing a second aperture in a portion of the wall of the chamber when the valve is in a closed position.
• the effect of providing the first cap having a sealing surface facing the lever and the sec- ond cap having a sealing surface facing away from the lever, is that the first cap and the second cap is operated simultaneously in response to a pivoting movement of the lever with respect to the fulcrum element.
• the fulcrum element provides a fulcrum of the lever.
• a position of the lever and thus a position of the first cap and the second cap with respect to the wall, depends on a torque or moment on either side of the fulcrum of the lever.
• the moment on either side of the fulcrum depends at least on a fluid pressure acting on an effective area of the first cap and the second cap, and on a moment arm of the resulting force from each of the first cap and the second cap.
• the difference in effective area of the first cap and the second cap is one controlling factor of a differential pressure at which the valve opens.
• the valve may be configured for desired needs by a simple and reliable design.
• the valve may be provided with a biasing means configured for providing an additional torque on the lever.
• Providing the valve with a biasing means has the effect that the valve may be adapted to required or desired changes with respect to opening and closing pressure of the valve, by selecting desired characteristics of the biasing device.
• the biasing means configured for urging the first cap and the second cap towards the wall of the chamber. This has the effect that the biasing means facilitates closing of an open valve when a pressure difference becomes less than a predetermined value, independently of any orientation of the valve.
• the biasing means may be in the form of a spring.
• the biasing means may be provided by a mass element configured for providing a torque with respect to the fulcrum element.
• the mass element may for example be provided by means of one of the first cap and the second cap.
• the first cap and the second cap may be adapted to a form of the first aperture and the second aperture, respectively. At least one of the first aperture and the second aperture may have a non-circular form allowing at least one of first cap and the second cap to be passed through the first aperture or the second aperture. This has the effect that the valve may be assembled independently of any access to both sides of the wall of the chamber when mounting the valve to the wall of the chamber.
• An area of the sealing surface of the first cap of the valve may be different from an area of the sealing surface of the second cap. This has the effect that the pressure acting on the first cap and the second cap will result in different forces. Different forces may result in different moment with respect to the fulcrum member.
• the valve may comprise a wall element provided with the first aperture and the second aperture, wherein the wall element may be configured for overlapping a perimeter of an opening provided in the wall of the chamber.
• the wall element may form part of the valve.
• Providing a wall element forming part of the valve has the effect that the valve may be fully assembled for example by the manufacturer, and the valve can be brought into an operating position by securing the wall element comprising the valve overlappingly to the perimeter of the opening to the chamber wall. Since the wall element is configured for overlapping a perimeter of an opening provided in the wall of the chamber, the wall element forms, when secured to the wall of the chamber, also a portion of the wall of the chamber.
• a valve assembly comprising the valve according to the first aspect of the invention, and a wall element configured for overlapping a perimeter of an opening provided in the wall defining a portion of the chamber.
• a third aspect of the invention there is provided a method for controlling a pressure difference between fluids on an inside and on an outside of a wall defining a portion of a chamber, the method comprises:
• valve - securing the valve to the wall of the chamber so that fluid is communicated into our out of the chamber via the first aperture and the second aperture when a pressure difference between fluids on an inside and on an outside the chamber exceeds a predetermined level and the valve opens, and so that fluid is prevented from being communicated through the wall of the chamber when the valve is closed.
• the valve according to the invention may for example be used in a chamber in the form of a gas duct, such as an air duct, operatively connected to a pump device for moving the air through the duct.
• the valve is found to be suitable for use as a safety device for being activated (to open) in an event of a malfunctioning pump generating an undesired pressure within the duct, or any other chamber subject to an under- or overpressure.
• Fig. 1 shows a perspective view of an embodiment of a valve according to the invention operatively connected to a wall portion a chamber;
• Fig. 2 shows in smaller scale and partly exploded a perspective view of the valve in fig. 1, wherein the valve comprises a wall element for being secured to a portion of a wall of a chamber;
• Fig. 3 shows in smaller scale an exploded view of the valve in fig. 2, and a protective cover;
• Fig. 4 shows the valve in fig. 1 operatively connected to a horizontal wall portion of a chamber, and provided with weight elements;
• Fig. 5 shows an embodiment of the valve connected to a chamber via a wall element as shown in figures 2 and 3, and wherein the valve is provided with a displaceable lever.
• reference numeral 1 denotes a valve according to the invention.
• the valve 1 is configured for controlling a pressure difference between fluids, typically gas, on an inside and on an outside of a wall CW or a wall element 50 of a chamber.
• the chamber may for example be a channel for a flowing fluid having a pressure being lower than or higher than ambient pressure.
• the ambient pressure may for example be atmospheric pressure.
• the valve 1 comprises a lever 3 having a first end portion 5 and a second end portion 7 opposite the first end portion 5.
• the lever 3 is pivotably secured to a fulcrum member 10 projecting from a surface of the wall CW or the wall element 50 to provide a fulcrum between the first end portion 5 and the second end portion 7 of the lever 3.
• the fulcrum member 10 is arranged about midways between the first end portion 5 and the second end portion 7.
• the valve 1 further comprises a first cap 20 pivotably connected to the first end portion 5 of the lever 3 via a pivot connection 22 comprising an ear- and bolt connection that will be appreciates by a person skilled in the art.
• the first cap 20 has a sealing surface 24 facing the lever 3.
• the sealing surface 24 comprises an annular sealing element 25 secured at a periphery portion of the sealing surface 24.
• the valve 1 further comprises a second cap 30 pivotably connected to the second end portion 7 of the lever 3 via a pivot connection 32 comprising an ear- and bolt connection that will be appreciates by a person skilled in the art.
• the second cap 30 has a sealing surface 34 facing away from the lever 3.
• the sealing surface 34 comprises an annular sealing element 35 secured to a periphery portion of the sealing surface 34.
• the second cap 30 is configured for sealing a second aperture A2 (see fig. 3) in a portion of a wall CW or a wall element 50 of the chamber.
• first cap 20 has a sealing surface 24 facing the lever 3
• second cap 30 has a sealing surface 34 facing away from the lever 3
• first cap 20 and the second cap 30 in a position of use of the valve 1 are arranged on each side of the wall element CW of the chamber.
• valve 1 is operatively connected to a chamber wall CW provided with a first aperture Al and a second aperture.
• the valve in fig. 1 is shown in a closed position wherein the second aperture is covered by the second cap 30, but the second aperture in fig. 1 is similar to the second aperture A2 shown in fig. 3.
• the apertures Al and A2 are provided by cutting away portions of the wall CW of the chamber. Further, the fulcrum member 10 is secured to the wall CW, for example by mechanical fastening means.
• the first cap 20 is configured for sealing an aperture Al having a larger area than the aperture A2 to be covered by the second cap 30, and a portion of the valve 1 may be tread through the first aperture Al.
• FIGS 2, 3 and 5 show an alternative way of connecting the valve 1 to the wall CW of the chamber.
• the valve 1 is preassembled onto a chamber wall element 50 configured for overlapping a perimeter of an opening A3 provided in a wall CW of the chamber.
• the valve 1 and the wall element 50 form a valve assembly 2.
• the wall element 50 is provided with the first aperture Al adapted to the first cap 20, and a second aperture A2 adapted to the second aperture A2.
• the first aperture Al and the second aperture A2 of the valve assembly 2 is configured for communicating with the chamber opening A3.
• only one aperture (the opening A3) is required in the wall CW of the chamber for communicating a fluid through the wall CW of the chamber.
• the wall element 50 of the valve assembly 2 is configured for being secured in a sealing manner to the chamber wall CW.
• the wall element 50 is provided with a sealing means 52 and secured to the chamber wall CW by means of screws 54 as shown for example in fig. 5.
• Fig. 3 shows a protective cover 60 configured for protecting the valve 1 against objects that may damage parts of the valve being exposed to ambient environment.
• the protective cover is secured to the wall element 50 by means of screws 54. It should be noted that the protective cover 60 may also be used for protecting valve 1 operatively connected to the wall CW of the chamber, as shown in figures 1 and 4.
• an effective area of the first cap 20 that in a position of use may be subject to a fluid pressure different from ambient pressure, is larger than an effective area of the second cap 30 also subject to the fluid pressure via aperture A2.
• pressure acting on the first cap 20 will result in a force that is larger than a force resulting from the pressure acting on the second cap 30 having a smaller effective area.
• the two forces will provide oppositely directed moments with respect to the fulcrum member 10.
• the valve 1 tend to open once there is a lower pressure inside the chamber than outside the chamber.
• a resulting, effective torque or moment should be controlled.
• Controlling the resulting moment can be achieved in many ways. One way is the effective areas of the first cap 20 and the second cap 30 as discussed above. Another way of controlling the resulting moment is to arrange a biasing means providing a torque.
• a biasing means may be a spring 40 as shown for example in fig. 1.
• the resulting moment may be controlled by controlling a weight of at least one of the first cap 20 and the second cap 30. Controlling a weight of at least one of the first cap 20 and the second cap 30 may be particularly effective for a valve 1 that is configured to be arranged substantially horizontally, meaning that the lever 3 is configured to pivot with respect to a substantially horizontal plane.
• Fig. 4 shows such a "horizontal" valve 1 provided with a weight element 42 secured to a portion of the second cap 30.
• the weight element 42 is provided by means of two horseshoe-shaped magnets arranged stacked on a top surface of the second cap 30 made from a magnetic material.
• the activation pressure of the valve 1 is adjustable by adding or removing magnets from the second cap 30.
• the control of the pressure difference upon which the valve 1 opens may be provided by the weights of the first cap 20 and the second cap 30, for example by providing the second cap 30 in a denser material than the first cap 20.
• a biasing means such as a spring 40 and/or a weight element 42 is suitable also for controlling closing of the valve 1 by urging the first cap 20 and the second cap 30 towards the wall CW of the chamber or the wall element 50 of the valve assembly 2, when a pressure difference becomes less than a predetermined level.
• a biasing means in the form of a spring 40 operates independently of any orientation of the valve 1.
• a further or an alternative way of controlling the resulting moment is to provide a lever 3 that is adjustable with respect to the fulcrum member 10, so that a longitudinal axis of the lever 3 is displaceable with respect to the fulcrum member 10 and the first cap 20 and the second cap 30.
• a distance between the fulcrum member 10 and each of the first cap 20 and the second cap 30 can be adjusted to provide a desired moment arm for the forces acting on each the first cap 20 and the second cap 30.
• An example of a displaceable lever 3 is shown in fig. 5.
• the lever 3 is provided with two slots: a first slot 22' for receiving a bolt for providing the pivot connection 22 for the first cap 20; and a second slot 32' for receiving a bolt for providing the pivot connection 32 of the second end cap 30.
• the fulcrum member 10 is secured to the wall element 50 via a fulcrum member guide 11 that is secured to the wall element 50 for example by welding (not shown).
• the fulcrum member guide 11 is provided with a slot 10' for receiving a bolt for locking the fulcrum member 10 in a desired position within the slot 10'.
• each of the first slot 22' and the second slot 32' replaced with at least two apertures configured for receiving its respective bolt of the pivot connections 22, 32.
• valve 1 When the valve 1 opens, a pressure difference between the fluids on an inside and on an outside of the chamber, will be rapidly reduced. This is because the first cap 20 and the second cap 30 allow instantaneous fluid communication through the first aperture Al and the second aperture A2 once the lever 3 is pivoted with respect to the fulcrum member 10 and the valve 1 opens for fluid communication through the first aperture Al and the second aperture A2. Once a pressure difference between the fluids on an inside and on an outside of the chamber is below a predetermined value, the valve 1 as shown will close.
• valve 1 Due to its configuration, the valve 1 opens immediately and substantially to a fully open position once a pressure difference across the valve exceeds a "set-pressure".
• the valve 1 according to the invention is relatively simple in construction, has few movable parts and is an autonomous, self-operating device that requires substantially no maintenance during it operating lifetime.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Safety Valves (AREA)
• Fluid-Driven Valves (AREA)
• Mechanically-Actuated Valves (AREA)
• Control Of Fluid Pressure (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=84534804

Family Applications (1)

Country Status (6)

Citations (1)

Family Cites Families (23)

• 2021
  • 2021-12-17 NO NO20211524A patent/NO346753B1/en unknown
• 2022
  • 2022-11-30 CA CA3239397A patent/CA3239397A1/en active Pending
  • 2022-11-30 CN CN202280082462.5A patent/CN118401774A/zh active Pending
  • 2022-11-30 EP EP22908054.4A patent/EP4448993A4/en active Pending
  • 2022-11-30 US US18/713,038 patent/US20250027573A1/en active Pending
  • 2022-11-30 WO PCT/NO2022/050275 patent/WO2023113607A1/en not_active Ceased

Patent Citations (1)

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