• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A shut-off valve arrangement provided in connection with a fluid passage for detecting and closing a fluid leak in the passage or associated actuator or container. The shut-off valve arrangement comprises leak detection means (120), trigger means (130) operatively coupled to the leak detection means for triggering a gas supply, gas supply means (140) operatively coupled to the trigger means for supplying and directing gas to the shut-off valve (110) comprising the shut-off valve arrangement, to shut off by means of a gas derived from the gas supply means (140).
    公开号:FI20197157A1
    申请号:FI20197157
    申请日:2019-12-12
    公开日:2021-02-26
    发明作者:Timo Risikko
    申请人:Timo Risikko；
    IPC主号:
    专利说明:

    SHUT-OFF VALVE ARRANGEMENT
    FIELD OF THE INVENTION The present invention relates to a shut-off valve arrangement for use in closing a fluid passage in the event of a leak.
    BACKGROUND Leakage damage, such as —water damage — to households causes significant financial losses each year. Several different methods are known for detecting and handling leaks. Some solutions are based on leak detection and detection without a shutdown function. Solutions are also known in which, in addition to detecting a leak, the leak is also closed in ways based on, for example, electronic control and a closed circuit. The disadvantage of these solutions is their complexity and dependence on electricity supply. It is therefore clear that there is a need to develop an improved solution for detecting and preventing leakage damage.
    BRIEF DESCRIPTION It is an object of the invention to provide a solution to at least partially eliminate the above-mentioned problem. The object is achieved by an invention which is the subject of independent claims. Preferred embodiments are described in the dependent claims. > The invention has the advantage that leak detection and N stopping are fast and reliable. The electric = solution according to the invention is also significantly cheaper to implement than the electric = shut-off system.
    T = n FIGURES ~ The invention and its preferred embodiments are shown in the following 2 figures, in which Figure 1 shows a shut-off valve arrangement according to an embodiment of the invention; and Figure 2 shows a preferred embodiment of the method according to the embodiments.
    DETAILED DESCRIPTION Embodiments relate to an arrangement and method for shutting off a fluid supply in the event of a leak in a fluid supply system. In this context, the liquid supply system can be, for example, a water supply system in a property or industrial plant or a fuel supply system in a vehicle. A leak situation can be related to, for example, a pipe, hose, actuator or tank in the system.
    Embodiments relate to an arrangement comprising means for detecting a leak, means for triggering a gas supply as a result of a leak, and a shut-off valve for shutting off the liquid supply by means of an actuator connected to the gas supply system.
    Figure 1 illustrates the device parts of embodiments of the invention on a rough level. The figure shows the flow channel used for the liquid supply and the shut-off valve 110 mounted in the channel. The channel inlet section leading to the shut-off valve 110 is marked with 100A and the channel outlet section with 100B. If necessary, the shut-off valve can be used to shut off the flow of the substance between the inlet and outlet sections.
    It is clear that the fluid supply system includes parts other than the ductwork 100A, 100B shown. A possible leak in the supply system can occur either in the duct system or in an actuator connected to the duct system, for example in a dishwasher, pump, tap, or the leak can be due to N, for example a drain blockage or a tank connected to the liquid supply, W = The arrangement according to the embodiments further comprises a leak detection apparatus 120 arranged to detect a leak in the substance supply system. The leak detection apparatus 120 may be separate from the substance> supply system 100, and may not be in direct communication with the substance N supply system. For example - in the case of - a residential property - = a substance supply system may mean a water supply system, in which case leak detection equipment may be located, for example, on the floor of a residential property to detect possible water leaks from the substance supply system. It will be appreciated that leak detection equipment may be provided per one or more material delivery systems.
    The leak detection apparatus may comprise a mechanical component which loses mechanical strength due to the substance. In connection with the detection of a liquid leak, the device component in question may comprise, for example, wood fiber pulp, starch, mineral, pulp, salt or some similar liquid-meltable, soluble or oxidizable substance.
    Figure 1 further shows a trigger device 130 for protective operations operatively connected to one or more leak detection devices 120. The trigger device 130 may comprise, for example, a spring element, which spring element may be of the coil spring or arc spring type, for example. In its normal state, the spring means is tuned, so that potential energy is stored in it. The spring means is mechanically operatively coupled to the leak detection device component. = This means that when a sensing device component melts, deceives or dissolves under the influence of a detectable substance, the spring and the potential energy stored in it are released into the kinetic energy of the spring.
    Instead of a spring, the triggering device can be based on magnetism, for example in that the material belonging to the detection device is arranged to keep the different polar magnets apart and when the substance loses its mechanical strength, it allows the magnets to approach each other, releasing kinetic energy.
    N In one embodiment, the trigger device 130 comprises a trigger arm operatively connected to the spring N. By functional coupling E is meant that when the potential energy stored in the spring is released, the trigger arm receives N kinetic energy either in the direction of displacement of the spring or in the opposite direction.
    = The trigger arm can be - for example, a straight rod. In one embodiment, the other end of the trigger arm may be formed as a sharp spike, which is arranged to puncture the casing of the gas tank belonging to the system in order to release the gas from the tank. As an alternative to the piercing spike in the gas tank,
    the trigger can also operate, for example, by the trigger arm removing the pin or similar locking element from the pressure vessel, thus releasing the gas supply.
    The shut-off valve arrangement according to the embodiments further comprises gas supply means 140 operatively connected to the trigger apparatus 130 for triggering the compressed air. The gas supply means may comprise a tank in which, for example, compressed air or carbon dioxide is stored.
    The use of carbon dioxide is particularly advantageous because the carbon dioxide reacts less to the temperature than the air, so that the pressure in the pressure vessel remains more constant, contributing to the reliability of the device.
    In the embodiment described above, in which the trigger arm is shaped to be sharp at one end, the arrangement is arranged to operate such that the sharply shaped trigger arm is arranged to puncture the shell of the gas container. Preferably, the shell of the gas container is made of metal to ensure long-term operation and mechanical strength. In another embodiment, the trigger arm is operatively connected to the valve or faucet of the gas container to release a gas, such as compressed air or carbon dioxide, from the container.
    According to the embodiments, the gas is thus not active in the ductwork in the normal situation of the device, which thus means a situation in which a leak has not yet been detected and shut-off measures have not been activated. This achieves significant advantages in the durability of the system because the gas does not cause stresses to the gas supply network in this normal situation. The system is also more reliable because it is not dependent on a continuous pressure output, but in embodiments gas is only produced when a leak occurs.
    > Furthermore, the solution according to the embodiments avoids the formation of N condensed water, which is a risk in a continuously pressurized N system. Condensation water can enter, in a pressurized system, z the trigger element, causing an incorrect trigger.
    N Further, in a continuously pressurized system where = a tripping element, such as a salt or pulp element, is in constant contact with 2 compressed air, moisture may be absorbed from the compressed air. In this case, the tripping element is - subject to oxidation and may no longer be able to contain compressed air and ensure the tightness of the system. The trigger element may also petrify under the influence of moisture and heat, which has a detrimental effect and brings uncertainty to the melting time of the trigger element.
    With the solution according to the embodiments, in which the production of pressure is started only after the detection of a leak, the trigger element is not subjected to gas pressure and the problems described above can be avoided.
    Figure 1 shows a compressed air duct 142 connected to the compressed air supply means 140, to which compressed air from a compressed air tank is led. Preferably, it is also ensured, for example by sealing, that the gas discharged from the gas tank cannot at least substantially discharge back in the direction of the trigger means, if the trigger means is implemented as a piercing spike in the gas tank.
    Figure 1 also shows a shut-off actuator 150 for closing the shut-off valve 110. In one embodiment, the shut-off actuator comprises a gas-operated shut-off arm connected to a tap belonging to the shut-off valve for turning it in a shut-off situation. However, the embodiments are not limited to closing the shut-off valve 110 by a shut-off valve separate from the shut-off valve, but the shut-off function can also be implemented by gas-operated devices arranged in the shut-off valve 110 itself.
    Although Figure 1 shows one detection apparatus, one trigger apparatus, one gas generating means and one shut-off valve, several different variations can be formed from these. For example, it can be arranged that one o detection device is connected to several shut-off valves, i.e. a leak situation detected in one> detection device shuts off the liquid supply at several N points in the supply system or even in several separate supply systems.
    N Alternatively, it may be the case that a plurality of z leakage detection devices are arranged per shut-off valve, in which case a leak detected in any of these closes N the shut-off valve in question.
    Figure 2 shows a preferred embodiment of method 2 according to embodiments.
    - In the initial step of the method = 200 is - arranged = flow shut-off equipment in connection with the substance flow system, if a leak is detected in the ductwork of the flow system or in an actuator belonging to the system.
    The equipment can also be used to detect, for example, leaks in the floor caused by a sewer blockage, or a rise in the liquid level due to the blockage, for example in an oil or pulp basin.
    In step 202, a leak is detected in the substance flow system.
    Leakage can be detected, for example, by a body reacting with said substance.
    The body may be, for example, a wood fiber-based material, such as cellulose or paper pulp, which crumbles under the influence of a liquid, or a liquid-soluble solid such as a salt or some similar chemical compound.
    In step 204, the shutdown measures are triggered as a result of the detected leak.
    For example, detecting a leak in step 202 and reacting to it by the loss of mechanical strength of the material used for detection may result in the release of potential energy from a spring operatively associated with the detection material.
    The spring, in turn, may have an arm or other similar actuator operatively connected, in which case the release of the potential energy of the spring also causes the movement of the arm.
    In step 206, the movement of the spring / arm is utilized to release a gas, such as compressed air, from the compressed air tank included in the arrangement.
    In one embodiment, the arm comprises a spike for breaking the shell of the compressed air tank and releasing the compressed air from the - resulting - opening.
    Thus, in embodiments, compressed air is maintained in the tank until required as a result of triggering operations. o In step 208, the released compressed air is led along the compressed air duct>.
    The pressure duct can lead either to the shut-off actuator or directly to the N shut-off valve. - The shut-off actuator may comprise, for example, a piston-type N shut-off arm arranged to move in the gas channel under the influence of gas. z The shut-off arm can be operatively connected to the tap part of the shut-off valve, for example N, so that the movement of the shut-off arm is arranged to close the shut-off valve.
    Shut-off valve = can be, for example, a poppet or ball valve.
    In the case of a shut-off valve solution without a separate external shut-off actuator 2, the shut-off valve itself can be fitted with a pneumatic shut-off element.
    In step 210, the supply of compressed air in the compressed air duct results in the closing of the shut-off valve and the disconnection of the substance in the supply duct. It should be noted that if the system includes a fluid reservoir and the leak is due to a leak in the fluid reservoir, the fluid passage to be closed may be a fluid passage leading to or from the reservoir, or both may be closed. For example, in connection with a fuel tank, it is essential to close the liquid channel leaving the tank, while in an industrial plant, for example, it is essential to close the liquid channel leading to the tank.
    The equipment and method described in the embodiments are disposable, i.e., when a leak is detected and shut-off operations have been performed, the equipment must be subjected to = necessary - maintenance measures to - bring it back into working order. Maintenance measures may include, but are not limited to, replacing the detection material with a new, equivalent material, retuning the spring, and replacing or refilling the compressed air tank.
    It is clear that as technology advances, the inventive idea can be implemented in different ways. The invention and its embodiments are not limited to the above embodiments but may vary within the scope of the claims.
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    权利要求:
    Claims (15)
    [1]
    Shut-off valve arrangement, which is arranged at a liquid channel for detecting and closing a liquid flow in the channel or in actuators connected thereto, which shut-off valve arrangement comprises means (120) for detecting the flow of liquid, characterized in that shut-off valve arrangement comprises means for detecting the liquid flow operatively connected means (130) for pressing gas inlet, which means for pressing off the gas inlet comprise a tensioned spring element and means for detecting the liquid flow are operatively connected to the spring element in such a way that the means for detecting the liquid flow (120) loses its mechanical pourability, potential energy charged by the voltage of the spring element is arranged to release, which shut-off valve arrangement comprises means for pressing gas inlet operatively connected means for inputting and directing gas to a shut-off valve (110) shut-off valve arrangement, and means (150) f to close the liquid channel closing shut-off valve by means of the gas led from the means (140) for gas measurement.
    [2]
    A shut-off valve arrangement according to claim 1, characterized in that, means for detecting (120) the flow comprises a substance which loses its mechanical pouring effect due to the influence of the liquid by melting, dissolving or falling apart.
    [3]
    A shut-off valve arrangement according to claim 1, characterized in that means for pushing off the gas inlet (130) comprise to the spring element N an operatively coupled trigger shaft for releasing gas from gas inlet means (140).
    [4]
    A shut-off valve arrangement according to claim 3, characterized in that the trigger shaft comprises a spike, and gas inlet means (140)> comprises a gas container, and that the spike of the trigger shaft is arranged to puncture the gas container to release gas from the gas container.
    [5]
    A shut-off valve arrangement according to claim 3, characterized in that the gas supply means (140) comprises a valve at the gas container and that the discharge shafts are arranged to open the valve of the gas container to release gas from the gas container.
    [6]
    A shut-off valve arrangement according to claim 3, characterized in that the gas supply means (140) comprises a releasable locking means, and that the pressure shafts are arranged to release said locking means for releasing gas from the gas container.
    [7]
    A shut-off valve arrangement according to any preceding claim, characterized in that the arrangements comprise a gas duct connected to a gas supply means (140) for directing the released gas to the shut-off valve.
    [8]
    A shut-off valve arrangement according to any preceding claim, characterized in that means for closing (150) the shut-off valve comprise a piston arranged to act on the action of the gas, which piston is arranged to turn a closing element of the shut-off valve to shut off the shut-off valve. ninsventilen.
    [9]
    A shut-off valve arrangement according to any preceding claim, characterized in that the gas comprises compressed air.
    [10]
    N S 10. A shut-off valve arrangement according to any preceding patent claim, characterized in that the gas comprises carbon dioxide.
    [11]
    A shut-off valve arrangement according to any preceding claim, characterized in that the arrangements comprise a cellulose container, a container for fuel, or oil or other liquid substance, and that means for detecting the flow (120) are provided. to detect the flow in said container and - close the liquid channel leading to or from the container.
    [12]
    A shut-off valve arrangement according to any preceding claim, characterized in that the arrangements comprise a property, the liquid channel is the water or drain pipe of the property, and that means for detecting (120) the flow are arranged to the floor of the property to detect the flow of water. or the drain pipe.
    [13]
    A method of detecting and closing a flow in the context of a liquid channel, characterized in that - a flow is detected (202) by a substance which loses its mechanical durability due to the action of the liquid, which leads to a depression (204) of a tensioned spring. and pressurized by gas supply to gas supply system as a result of the detected flow, and gas supply is opened (208) from a gas container by means of a pressure shaft (206) connected to the spring, and closed (210) the flow of liquid in said liquid channel with by means of a shut-off valve by means of an actuator connected to the gas supply system.
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    同族专利:
    公开号 | 公开日
    SE544088C2|2021-12-21|
    SE2030344A1|2021-06-13|
    NO345781B1|2021-08-02|
    FI128902B|2021-02-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7218237B2|2004-05-27|2007-05-15|Lawrence Kates|Method and apparatus for detecting water leaks|
    US8776824B2|2012-10-19|2014-07-15|Micro Sutures & Golden-Tech Co., Ltd.|Sanitary automatic water leakage detection and shut-off apparatus|
    EP3252360B1|2016-06-03|2018-12-12|Alfa Laval Corporate AB|Control of supply of air to a pneumatic valve actuator|
    法律状态:
    2021-02-26| FG| Patent granted|Ref document number: 128902 Country of ref document: FI Kind code of ref document: B |
    2021-05-19| PC| Transfer of assignment of patent|Owner name: WET&LOCK OY |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20197157A|FI128902B|2019-12-12|2019-12-12|Stop valve arrangement|FI20197157A| FI128902B|2019-12-12|2019-12-12|Stop valve arrangement|
    SE2030344A| SE544088C2|2019-12-12|2020-11-23|Stop valve arrangement|
    NO20201300A| NO345781B1|2019-12-12|2020-11-24|Stop valve arrangement|
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