CN101389894A

CN101389894A - Method and device for measuring gas leakage

Info

Publication number: CN101389894A
Application number: CNA2007800065201A
Authority: CN
Inventors: 德·哈蒂格·雨格; 安德烈·保罗
Original assignee: CLEVERGAZ SPRL
Current assignee: CLEVERGAZ SPRL
Priority date: 2006-02-22
Filing date: 2007-02-22
Publication date: 2009-03-18
Also published as: BE1017016A5

Abstract

A method for determining a gas leak in a distribution system connected to a gas source or supply is disclosed, in which the rate of flow of gas from the gas source to said distribution system is detected, the method being characterized in that the distribution system is connected to a dynamic suite comprising at least one buffer chamber and a control means capable of interrupting the gas supply to the device when a quantity of gas greater than or equal to a first predetermined quantity fills the buffer chamber.

Description

Measure the method and apparatus of gas leakage

Invention field

Theme of the present invention is a kind of method and a kind of device that can measure the leakage of a distribution system or its certain part.

Technical background

Belgian patent BE09600615 discloses a kind of method of monitor liquid flow rate.As follows according to the document method:

-measure the flow velocity that liquid flows first a given moment,

This first measured value of-Ruo is higher than a set point value, this first measured value is stored in the storage, and one second one second measurement carrying out liquid stream constantly,

-this first and second measured value relatively if the difference between the described measured value is higher than a predetermined value, repeats this observation process, and if this difference is lower than a tolerance, then produce a leakage signal or interrupt the arrival of fluid.

A kind of such method is suitable for the flow of monitoring liquid.According to belgian patent BE09600615, this monitoring device does not have the buffer cell that can hold a changeable flow.Therefore such device can not be measured gas leakage, because can not measure gas flow rate zero or that be substantially zero in frequent interval ground.Specifically, if gas leakage is arranged, so just need this leakage of fast detecting, this goes to wait for two substantially the same treating in some independent moment velocity measurement is normally impossible in time with regard to meaning.

Another kind of known method is used for monitoring the existence of the one or more leakages of a kind of dispensing device, a plurality of customer outlets or utensil wherein has been installed (under the situation of water: water tap, spraying tube, bathroom etc.; Under the situation of gas: gas stove, convector, cooker etc.); In the method, to cut off (water tap for example in the closed position) definite period by any consumption of the generation of subscriber's outlet or utensil, for example 24 hours, and fluid flow or the loss of flowing through this dispensing device in this time period are measured with water meter or gas meter.If a lot of gases or water have flow through this device (normally without any useful consumption), this just shows and has leakage.Under the situation of gas, such method is also inapplicable, leaks because if exist, and just has the danger of a certain amount of air accumulation on a special position, sets off an explosion or the great risk of contingency.

The present invention is directed to a kind of method, this method allows the fast detecting of gas leakage in a distribution system or its certain part, and advantageously, this method is automatic.

Summary of the invention

The present invention is limited by appended a plurality of main claims.In these a plurality of appended claims, define the embodiment of some preferred alternative forms.A theme of the present invention is a kind of method that is used to measure the gas leakage among a distribution system or its certain part; and/or be used to check a kind of method of the normal or abnormal work of a distribution system or its certain part; described system or parts are connected to a gas source or supply source, detect the flow velocity that flows to the gas of described distribution system or its certain part from this gas source in this method.Described method is characterised in that, this distribution system or its certain part, one or more is installed on this distribution system and peripheral unit that can spent gas specifically, a related dynamic storage body or device, this dynamic storage body or device comprise at least one buffer cell and at least one control apparatus, and this control apparatus can be filled the supply of interrupting with more than or equal to gas flow of predetermined first amount the time to the gas of this device at this buffer cell; Be at least when this control apparatus interrupts the gas supply of this device, measure from the gas flow rate in this source or do not have such flow velocity.

This device with its buffer cell or a plurality of chambers is a dynamic storage body, is designed to that some are changed the artificially and is incorporated in the gas flow rate that is fed to this device, and guarantee that simultaneously one or more peripheral unit come spent gas in normal mode.Along with the consumption of gas in one or more peripheral unit in the downstream that is installed in this dynamic storage body, this inflation of dynamic storage body adjoining land and venting.When using this memory bank, it is controlled and waves closing of valve 6.As long as the gas flow one that exists in the memory bank drops under the prearranging quatity, valve 6 is just opened.Compare by the specific needs with each user's utensil or peripheral unit, this memory bank was inflated apace again owing to obviously exceeding of gas pressure in the conduit upstream.When air-flow is interrupted by this control valve, be installed in flowmeter of this device upstream or detector and can measure existence leakage between this table meter or detector and this dynamic storage body or the device.When this memory bank was inflated again, this table meter or detector will or be measured constant flow rate in the short time period or the notable change on inherent flow velocity of short time period, and advantageously, this short time period for example is 1 to 10 second.

Can supply a gas at distribution system under the situation of a plurality of peripheral unit, the master meter meter will detect the inflation again of one or more different memory banks, can have like this to change flow velocity and therefore find the inconstant effect of flow velocity in the period of inflation again.

Advantageously, this method is a kind of like this method, wherein: when not having flow velocity zero or that be substantially zero on one first time period of determining and/or when on one second time period of determining, the flow velocity of a non-zero being arranged, send one and leak or potential leakage or the unusual signal that consumes.According to an embodiment, at least when this control apparatus is interrupting the gas supply of this device, when not having flow velocity zero or that be substantially zero on one first time period of determining and/or when the flow velocity of a non-zero took place on one second time period of determining and/or on flow velocity, do not exist on one the 3rd time period of determining be lower than one definite when allowing that of variation changes, advantageously on the volume less than 5%, preferably on the volume less than 10%, preferably on the volume less than 15% variation, send one and leak or potential leakage or the unusual signal that consumes, described signal advantageously be used to interrupt delivery gas to the upstream that is positioned at this dynamic storage body or device to the small part loop and/or be used for interrupting a main gas supply of this dispensing loop.Yet advantageously, also can under the situation of allowing other leakage of certain level, just interrupt gas, for example a 12l/h or a leakage level still less, preferably a 6l/h or a leakage level still less.

Another possible alternative form according to the embodiment of the inventive method, to comprise a distribution system of several peripheral unit, perhaps one of the several peripheral loop of same distribution system or a plurality of peripheral unit and a plurality of gas leakage signals are measured as a function of time.When the number of leakage signal surpasses a predetermined value on a determining time, send that a signal for example is used for closing main gas supply and/or to the gas supply of an equipment control unit.Thereby can the monitoring leakage level other develop, therefore allow the gas responsible person to determine whether that an equipment still meets the characteristics of leakage.

An alternative form according to embodiment, this method is a kind of like this method, wherein when in one first determining time (for example 1 to 25 second) detect one be zero or basically be zero flow velocity the time, send the signal of " not have to leak " or " consuming normally ".

According to a specific alternative form, at least when this control apparatus is interrupting the gas supply of this device, in one first time period of determining, detect one be zero or basically be under zero the flow rate conditions and/or changing on the flow velocity under the situation that the minimum flow velocity definite greater than change, advantageously in one the 3rd time period, detect on the volume at least 5%, preferably on the volume at least 10%, a variation of at least 25% on the volume especially.Advantageously, make the equipment that interrupts the gas supply (allow gas to flow to this device or store body from gas supply source at control apparatus described in this position at least one primary importance, be lower than or when equaling one second amount of determining with the gas flow of box lunch in this buffer cell, be used for filling this buffer cell at least) and second place (described control apparatus interrupts the gas supply of this device when gas flow in this buffer cell is greater than or equal to described first definite amount in this position) between mobile.

As preferential a selection, utilize a buffer cell, it can hold a certain amount of gas, this gas flow is corresponding with employed average gas amount on a time period at least, this time period and needed time at least one times and preferably twice is corresponding at least, spent gas not in this device described distribution system in downstream or its certain part is so that fill buffer cell with a gas flow that is equal to, or greater than described first prearranging quatity.For example, fill the required time of this buffer cell and be lower than 30 seconds, and this buffer cell can hold normal consumption corresponding at least 30 seconds, particularly at least one minute a gas flow of normal consumption.Therefore this buffer cell is used to allow to interrupt a plurality of time periods and enters the air-flow of this device, and meanwhile provides a normal gas consumption via this distribution system.These time periods of interrupting air-flow were spaced from each other by the time period of filling buffer cell.

Obviously, this buffer cell can comprise a plurality of buffer sublayer chambers.

According to an embodiment, used the buffer cell of a variable volume.For example, the volume of this chamber can change between a minimum volume and a maximum volume.According to a favourable details, used a buffer cell that parallels the location with a conduit that connects distribution system or its certain part or peripheral components, advantageously it is positioned at the downstream of distribution system, be positioned at its this peripheral unit or its certain part upstream in particular, for example be parallel to a conduit of this peripheral unit.

According to another favourable feature, this buffer cell is designed to hold a gas flow corresponding to a consumption in a determining time, advantageously corresponding to a normal mean consumption.If at least among this time period sometime, if of not detecting this device be zero or the gas flow that is substantially zero and/or at this moment between detect a constant gas flow in section or the part of this time period, then control apparatus interrupts the gas supply.

In same distribution system (the consumption flow velocity of this distribution system is determined) more than three peripheral unit or more than the leakage in three the peripheral unit network just when detected, this moment, each peripheral unit or peripheral unit network comprised its buffer cell, and it is favourable that these buffer cells have different maximum volumes.For example, under three peripheral unit situations, the maximum volume of a buffer cell for example be at least the twice of another buffer chamber volume or equal at least two other buffer cells maximum volume and.

Another theme of the present invention is a dynamic storage body or device; it can generate some gas flow rates and change; these variations can be used for measuring a gas leakage in a distribution system or its certain part; for example arrive the leakage of one or more peripheral unit; perhaps be used for measuring the normal or unusual running of a distribution system or its certain part; described system or parts are connected to a gas source or supply source, described dynamic storage body or device be designed to be installed in a distribution system or such system a part the upstream or be used for being associated with one or more peripheral unit that can spent gas.This memory bank or device comprise a coupling device, it is designed to form the union body with an equipment, this Equipment Inspection flows to the having or do not have of gas flow of described distribution system or its certain part from this gas source, described detection facility with can send one leak or a device of potential leakage or leak free signal related.Described memory bank or device further comprise at least one buffer cell, this buffer cell can be from this distribution system or from its certain part receiver gases, with a control apparatus, this control apparatus can interrupt the gas supply of this memory bank or device with more than or equal to gas flow of one first prearranging quatity the time when this buffer cell is filled, and this detection facility is designed to measure from the existence of the air-flow in the supply source of the described device of supply or source or does not exist.

Connection between the equipment that flow of this dynamic storage body or device and detection has or not can be passed through a kind of ripple, radio waves for example, and by an electrical signal, or the like.

Advantageously, this device is associated with a flow detection equipment,

-wherein in one first time period of determining, do not exist one to be that the variation on flow velocity is lower than one and definite allows variation under the flow rate conditions of a non-zero under the flow rate conditions zero or that be substantially zero and/or in one second time period of determining and/or in one the 3rd period of determining, it advantageously on volume less than 5%, preferably on the volume less than 10%, preferably on the volume under the situation of 15% variation, at least when this control apparatus is interrupting the gas supply of this device, the device that is associated with this detection device can send one and leak or potential leakage or the unusual signal that consumes, and/or

-wherein to detect one in one first time period of determining be under the flow rate conditions zero or that be substantially zero and/or detect a variation on the flow velocity be higher than a definite minimum flow velocity and change in one the 3rd time period, it advantageously on the volume at least 5%, preferably on the volume at least 10%, particularly on the volume under the situation of at least 25% variation, at least when this control apparatus was interrupting the gas supply of this device, the device that is associated with this detection device can send one not to be had leakage or consumes normal signal.

Advantageously, this control apparatus is designed to control the equipment of this interruption gas supply, and (this position allows gas to flow to this device from this gas supply source or source of the gas at least one primary importance, be lower than or when equaling one second amount of determining with the gas flow of box lunch in this buffer cell, at least be used for filling this buffer cell), and move between second place (the gas supply of this device is interrupted when gas flow in this buffer cell is greater than or equal to described amount that first is determined in this position).

As preferential a selection, this control apparatus comprises at least one sensor, it is designed to measure or estimates to be present in gas flow in this buffer cell, and (its allows gas to flow to this device from this gas supply source or source of the gas at least one primary importance to be to be designed to instruct the equipment that interrupts the gas supply by this control apparatus, be lower than or when equaling one second amount of determining with box lunch one or the gas flow of this sensor in this buffer cell, at least be used for filling this buffer cell), and move between second place (the gas supply of this device is interrupted when or the gas flow of this sensor in this buffer cell are greater than or equal to described amount that first is determined in this position).

A concrete feature according to an embodiment of device of the present invention, this buffer cell can hold at least corresponding to a gas flow that passes through this distribution system or its employed average gas amount of certain part in the time period, this time period is at least corresponding to one times of needed time and twice at least advantageously, wherein there is not gas consumption among the described distribution system in this device downstream or its certain part, so that use a gas flow that is equal to or greater than this first definite amount to fill this buffer cell.

According to a details of an advantageous embodiment, this buffer cell is the chamber of a variable volume.

As preferential a selection, this device comprises a first sensor, and it is designed to measure the position corresponding to the chamber of a volume that is lower than a definite minimum volume; With one second sensor, it is designed to measure the position corresponding to the chamber of a definite maximum volume.

According to an embodiment details, this buffer cell and a parallel placement of conduit, this conduit are designed to distribution system or its certain part are connected to gas source or supply source.

According to another favourable details, buffer cell is designed to hold a gas flow, it is corresponding to a consumption, an advantageously normal mean consumption on a definite time period for example, is being lower than in time period of 5 minutes, particularly be lower than 2 minutes, be preferably lower than 1 minute, for example 5 seconds to about 1 minute, especially be lower than 15 seconds.Like this might to the leakage of omitting to carry out a kind of almost be instantaneous inspection.

According to another favourable concrete feature, at least one equipment acts on this buffer cell so that apply the power of filling in this buffer cell of resisting.

Still according to another favourable concrete feature, buffer cell is associated with a valve of the filling of this buffer cell of control, and described valve is a safety check advantageously, and is associated with control another valve from this buffer cell gas purging.Also according to the embodiment of another kind of form, this device comprises an enclosed space, and a film spare that limits a wall spare of this buffer cell moves in this space.Therefore this enclosed space is divided into a first portion, and it can limit volume and a second portion of this buffer cell at least in part, and advantageously a return equipment is placed in this part.Second portion is associated with one or more equipment of the gas pressure of control in this second portion.This equipment is, for example:

-one or more holes, advantageously under the situation of fire or temperature be higher than under the predetermined temperature conditions they and one or more device associations that they are closed, for example, some expansion beads, some safety valves, or the like,

-one auxiliary enclosed space, be communicated with second portion by a plurality of passages, advantageously under the situation of fire or temperature be higher than under the predetermined temperature conditions and be associated with one or more equipment that they are closed, for example, some expansion beads, some safety valves, or the like, a softness and film spare (advantageously essentially no elasticity) flexibly placed in this space.This softness and flexibly film spare make by a kind of fire prevention and fire-resistant material, for example a kind of have a fire-proofing chemical FI, and can be in this second auxiliary space, according to entering a kind of material that air in this second enclosed space or gas move from second portion.This second enclosed space has one or more holes, advantageously with under the situation of fire or temperature be higher than one or more equipment of under the predetermined temperature conditions they being closed and be associated, for example, some expansion beads, some safety valves, or the like, be used for according to this this frpf softness and the motion of film spare flexibly allow outside air to flow into and flow out this second enclosed space.

Another theme of the present invention is a kind of dynamic storage body or device; it can produce the variation on the gas flow rate; this variation can be used for being determined in a distribution system or its certain part whether gas leakage is arranged; for example to the leakage of one or more peripheral unit or be used for measuring a distribution system or its certain part is working properly or unusual; described system or parts are connected to a gas source or supply source; described dynamic storage body or device are designed to be installed in the downstream of certain part of a distribution system or such system; perhaps be associated with one or more peripheral unit; this memory bank or device comprise at least one buffer cell; an equipment; this equipment can interrupt the device that the gas of this storages body or device is supplied when this buffer cell is filled with gas flow determining amount more than or equal to one first; and compression is present in an equipment of the gas in this buffer cell; the device that described compression is present in the gas in this buffer cell is a system; it comprises at least one element; this element is selected from one or more a plurality of compressors; equipment at least one moving end-wall that acts on this buffer cell, and their combination.

Advantageously, the buffer cell of this dynamic storage body or device has a volume that can change between a minimum volume and maximum volume, and the moving wall (the advantageously film spare of a softness) that mechanical device acts on this buffer cell is at least gone up so that reduce the variable volume of this buffer cell.For example, this mechanical device is one or more springs (having identical elasticity coefficient or identical restoring force or different restoring forces), perhaps an assembly that is used with a spring (for example is fixed tightly in thin slice on this film spare or one flat plate and a spring action thereon, may insert an intermediate module, as a lever arm, a cam etc.).

According to an embodiment, this buffer cell comprises at least one moving end-wall, has acted on the gravity of at least one assembly on this moving end-wall, and this assembly can cause the minimizing of the variable volume of this buffer cell.In this embodiment, this removable wall mobile is necessary to be at least in part Vertical direction.

A details according to another embodiment, this buffer cell comprises at least one moving end-wall and at least one gas feed or a liquid delivery member of the gas that do not extract from the distribution system of this filling buffer cell, and is designed to cause the minimizing of the variable volume of this buffer cell.The gas that comes not from this distribution system can advantageously a kind of delivery member, and it can even connect a source of compressed air or an air compressor or a fluid supply, for example from the interior chamber that piston motion is arranged.

Another details according to an embodiment, this buffer cell comprises a moving end-wall, described moving end-wall has towards face of this buffer cell with towards the opposing side in a control room, and this memory bank or device comprise an equipment of giving this control room supercharging.Particularly, giving this equipment of this control room supercharging is an equipment that liquid or gas is fed to this control room.

According to a concrete feature, this device comprises at least one system, this system has at least one spring on the removable wall that directly acts on this buffer cell or some reply elements, perhaps has some other the assembly on the removable wall that is inserted in this buffer cell.

According to another concrete feature, this device comprises at least one compressor, is used for providing gas with a kind of form to this buffer cell, compresses this gas by the gas that relatively flows through this memory bank or device.

Still according to another concrete features of some embodiments, this device comprises: a removable wall spare and at least one equipment of being used for this buffer cell, this equipment is used for providing gas with a kind of form to this buffer cell, the pressure of the gas by relatively flowing through this device compresses this gas, and/or-regulator that is used to control the pressure that breaks away from this memory bank or device.

Still according to another embodiment, this device comprises an enclosed space, and a film spare moves therein, and this film spare limits a wall spare of this buffer cell.Therefore this enclosed space is divided into a first portion, and it can partly limit a volume and a second portion of this buffer cell at least, and advantageously this recovery device is positioned at wherein.This second portion is associated with one or more equipment of the gas pressure that is used for controlling this second portion.

These equipment are, for example: one or more holes, advantageously with under the situation of fire or temperature be higher than one or more equipment of closing them under the definite temperature conditions and be associated, some expansion beads for example, safety valve etc.-auxiliary enclosed space being communicated with this second portion by some passages, its door advantageously with under the situation of fire or temperature be higher than one or more equipment of closing them under the definite temperature conditions and be associated, some expansion beads for example, safety valves etc. are placed the film spare of a softness and flexible (advantageously essentially no elasticity) among this enclosed space.This softness and flexibly film spare make by a kind of fire prevention and fire-resistant material, for example a kind of have fire-proofing chemical FI, and can be according to entering the air of the second portion in this second enclosed space or a kind of material that gas moves in this auxiliary enclosed space.This second enclosed space has one or more holes is arranged, they advantageously with under the situation of catching fire or temperature be higher than one or more device associations of under the predetermined temperature conditions they being closed, some expansion beads for example, some safety valves, or the like, to allow outside air to flow into according to this fire-resistant soft and motion of film spare flexibly and to flow out this second enclosed space.

A further theme of the present invention is a kind of gas distributing system, and it advantageously has one or more external equipments, and described system and/or one or more external equipment are associated with a dynamic storage body according to the present invention or device.Advantageously this distribution system further comprises a flow detector or the flowmeter that can almost measure the variation on the flow velocity at least continuously.Another theme of the present invention is a distribution system, it comprises a series of conduits, each conduit be used for supply gas give can spent gas one or more peripheral unit, at least two conduits or two peripheral unit are associated with a dynamic storage body according to the present invention or device separately in this system.

Another theme of the present invention is the use of an apparatus according to the invention in an existing equipment, to find out any leakage or to confirm that running is normal or unusual.In this usage, a device according to the present invention be installed in the gas return path to be detected or certain part of this gas return path on.After detecting, remove this device so that test another loop.In this usage, advantageously adopted a method according to the present present invention.

At last, another theme that the present invention also has is a kind of peripheral unit that is used for spent gas, and described peripheral unit comprises a feed line that is associated with a dynamic storage body according to the present invention or device.

Characteristics of the present invention and details will be by the detailed descriptions of the preferred form of following embodiment with reference to accompanying drawing and are become clear.

Description of drawings

In these figure:

Fig. 1 is a schematic representation that has assembled according to a kind of gas distribution apparatus of device of the present invention, and this buffer cell has its minimum volume,

Fig. 2 is a view of equipment among Fig. 1, and this buffer cell has its maximum volume,

Fig. 3 is a schematic representation according to another kind of equipment of the present invention,

Fig. 4 is the schematic representation that has assembled according to the another kind of gas distribution apparatus of device of the present invention, and this buffer cell has its minimum volume,

Fig. 5 is a view of the equipment among Fig. 4, and this buffer cell has its maximum volume,

Fig. 6 and 7 is schematic representation of another kind of dynamic storage body,

Fig. 8 remains some further views according to dynamic storage body of the present invention to Figure 12, and

Figure 13 is a device view that is similar to the device of Fig. 4.

Detailed Description Of The Invention

Allocation units 1 comprise one or more conduits 2, are used for gas is supplied to all gases consumer device or peripheral unit 10 for example water heater, heater etc., and advantageously these peripheral unit are contiguous and near this dynamic storage body or install 4.

A dispensing device 3 (for example dispensing a gas onto a house or a flat) is arranged between gas access and peripheral unit 10.Can produce the dynamic storage body that gas flow rate changes or install 4 upstreams that are positioned at this conduit 2 and these several peripheral unit 10, this gas flow rate can be used for measuring the gas leakage among a distribution system or its certain part, but is positioned at the downstream of this conduit 3.This suction port 5 has assembled a manual throttle down 5 (valve on the use amount measuring meter for example for example has the device or the system that detect constant flow rate) but has also had automation control.

Automatic-closing valve 6 or safety valve (advantageously described valve also is manual), its part is installed in the upstream of these peripheral unit, for example at the end of this conduit 3.This throttle down comprises a control unit 6A.

Dynamic storage body or install 4 and be installed between the peripheral unit 10 of throttle down 5 and dispensing loop 3 back comprises

-detection or measurement flow to an equipment 50 of the gas flow rate of described distribution system 3 from gas source 5, flow velocity in the conduit 3 of this Equipment Inspection or measurement automatic valve 6 upstreams,-equipment 8 related with described gas stream detection device 50, and this equipment can be on one first time period of determining, when not existing one to be flow velocity zero or that be substantially zero, perhaps when the change in flow that does not exist greater than a determined value, and/or send one leak or the situation of a non-zero velocity of flow in one second time period of determining of potential leakage signal under, launch the signal of a leakage or potential leakage.Advantageously this device 8 is designed to be used for measure substantially invariable flow velocity apace in some time periods so that detect a large amount of air-loss apace,

-one equipment 9, some electric leads for example, be used to transmit that a leakage signal is operated this valve 5 so that taking place to make under the situation of leaking or may leak this valve to enter closed position (but advantageously the valve 6 of the ingress of the conduit of a branch or intervening valve 7), and

-one buffer cell 11 is installed on the conduit 12 abreast, and this valve 6 of this conduit is connected on allocation units 1 and the peripheral unit.This buffer cell 11 has a volume that changes between a minimum volume shown in Figure 1 and a maximum volume shown in Figure 2.For example, this buffer cell is made for a bladder 13 in an enclosed space 14, inflating or to exit.Advantageously this enclosed space 14 comprises a part 12A of conduit 12 and advantageously comprises the device of quick assembling or connection, is used for that it is attached to allocation units and may be connected to another part of conduit 12B or be connected to the end of conduit 3.This enclosed space 14 comprises a sensor 15,16, is used to measure position and the position when its maximum volume of this bladder when its minimum volume.This enclosed space 14 comprises one or more valves, is used for when this bladder inflation gas being discharged this enclosed space and when this bladder is exitted gas being put into this enclosed space.This valve or these valves advantageously are equipped with a system, reach and just they are locked in a closed position when being higher than a predetermined temperature in case be used for temperature around these valves, for example in case detect a temperature above 100 ℃.In a possible embodiment, as long as the temperature of this enclosed space outside is lower than a predetermined temperature value, this valve just is in the open position to allow air to discharge or enter this enclosed space, in case and the temperature of this enclosed space outside just is in closed position (advantageously closing automatically) above this temperature value of determining.

Sensor

15 and 16 sends signal to the control gear 6A of control valve 6.When this sensor 15 receives when being in pulse of deflated state corresponding to bladder 13 from this bladder, so this sensor send a signal to control gear 6A to open valve 6 and to allow gas inletting device 4 and distribution network or loop 2 from gas source 3.The gas of inletting device 4 partly is used to fill this bladder 13.Therefore this bladder is inflated to its maximum volume position.This moment, this sensor 16 sends the control gear of a signal to this valve 6 of control, makes it close this valve.

Therefore this equipment 10 comes air feed by the gas that is present in the bladder 13.In order to make that valve 6 is easier to when being closed the gaseous emission in this bladder can provide an equipment in this enclosed space in allocation units 1, be used for this bladder is turned back to its least volume position.Such equipment can be a spring or a kind of pressurized air that is arranged in these enclosed space bladder 13 outsides.

When closing this valve 6, this flow measurement 50 is measured the variation of one zero flow velocity or a flow velocity in a period of time.Therefore the control unit 6A of control valve 6 is designed to send a signal to measuring equipment 50 or to equipment 8.

If flow velocity is the zero time period (for example to surpass a predetermined minimum time section, a time period of at least 0.5 times that is equivalent to filled capsules thing 13 needed times) if or in a determining time, detect a change in flow (for example normal consumption of peripheral unit a percentage or a multiple) greater than a determined value, then measuring equipment 50 is determined not leak, if and when the time period that has zero flow velocity is shorter than described definite time period or in a definite time period, do not detect described minimum flow velocity and change, the leakage signal that sends device 50 arrives this control apparatus so that valve 5, and valve 7 possibly, close.Advantageously launch a luminous signal or radio wave signal so that inform that with signal one leaks or a potential leakage.

Although flow measuring device 50 advantageously only receives the path of whether flowing by conduit 3 and gas about valve 6 and a pent information in conduit 3, but provide transmission of Information in some more complicated systems between this control unit 6A and this control unit 8, this is helpful and favourable.

Similarly, in a definite maximum time period (for example, more than the twice corresponding to filled capsules thing 13 needed times, particularly fill time period more than three times of these bladder 13 needed times) do not exist under zero flow rate conditions or under the situation that this valve 6 is not closed in a determining time, this equipment 6A determines to exist one to leak or potential leakage or the problem that peripheral unit consumes.This control apparatus 6A sends a signal then and instructs closing of valve 6 and/or send shutdown signal to a device and close towards the gas channel of gas distributing device 3 to control this valve 5 or valve 7, and may close the passage of the dispensing device 1a that leads to the conduit 3 that is connected valve 6 and valve 7 upstreams.Advantageously send a luminous signal or radio wave signal so that inform the problem of a leakage or a potential leakage and/or a consumption with signal.Send a suchlike signal to for example individual who is responsible for this equipment of monitoring, gas distributor, fireman, building ward, emergency service center etc.For example, suchlike signal sends on the constant current detector in the direct downstream of the control unit of device that detect to leak and/or main valve and/or main valve.Advantageously the maximum volume of this buffer cell or bladder is determined according to the mean consumption of this utensil 10.This maximum volume should be too not big, to such an extent as to when revealing generation, excessive gas from this bladder can be overflowed, and, for can be clocklike and check the leakage of this distribution network in the compact time lag and/or check the consumption problem of one or more utensils 10 that this volume should be not excessive yet.

For example, this maximum volume scope is in a definite time period between 2 times and 4 times of employed average gas amount, and this time period is for example between 30 seconds and 5 minutes.A short time period is favourable, because it has shortened the time between the continuous detecting twice.

Advantageously valve

5 or 7 is a kind of valves in the closed position on static or non-moving position.Therefore this valve is retained as and opens, for example by an electromagnet.Leak or potential leakage or excess consumption in case detect one, just no longer give this electromagnet power supply, this means that this valve automatically turns back to closed position.

A device 50 that advantageously will be used to detect constant flow rate directly is installed in the downstream of main valve 5.The leakage of this device in can detected catheter 3.Particularly, when this valve 6 is in the closed position, normally installs 50 and can not detect air-flow.If detect a constant or continuous flow, this flow represents to exist a leakage.

According to the gas consumption of the one or more peripheral unit that are installed in dynamic storage body downstream, this dynamic storage body is inflated continuously and is exitted.When the gas that uses from the dynamic storage body or when the dynamic storage body is being exitted, the closing of this dynamic storage body instruction valve 6.Fig. 3 is another schematic representation of apparatus, and it comprises the peripheral unit 10 that series of parallel is installed in this conduit 3.Each peripheral unit comprises a buffer cell 10 and can inflate continuously and the dynamic storage body or the device of exitting are associated according to gas consumption according to of the present invention with one.

Fig. 4 or 5 allocation units 1 comprise one or more conduits 2, it is used for gas is supplied to the utensil or the peripheral unit 10 of various spent gas, for example water heater, heating equipment etc., these peripheral unit are advantageously contiguous and near the dynamic storage body or install 4.

A dispensing device 3 (for example being used in a house or flat distribution of gas) is arranged between this suction port and these peripheral unit 10.One can produce the dynamic storage body of gas flow rate variation or install the downstream that 4 upstreams that are positioned at conduit 2 and peripheral unit 10 still are positioned at conduit 3, and this conversion can be used for measuring the gas leakage in a distribution system or its certain part.This suction port G has assembled a manual cut-off valve 5 (valve on the use amount measuring meter for example for example is used to detect the device or the system of constant flow rate), but it also can automatically be operated.

The part of self acting stop valve 6 or safety valve (described valve advantageously also is manual) is installed in the upstream of these peripheral unit, for example at the end of this conduit 3.This cut-off valve comprises a control unit 6A.

Be installed between cut-off valve 5 and these peripheral unit 10, at the dynamic storage body of dispensing loop 3 back or install 4 and be associated with :-one is detected or measures the equipment 50 that flows to the gas flow rate of described distribution system 3 from gas source G, flow in the conduit 3 of this Equipment Inspection or measurement automatic valve 6 upstreams,-equipment 8 related with described gas flow detection facility 50, and it can not exist for flow velocity zero or that be substantially zero or not exist under the situation of the change in flow that surpasses a determined value and/or under the situation of a non-zero velocity of flow in one second time period of determining in one first time period of determining, sends one and leaks or the signal of potential leakage.Advantageously this equipment 8 is designed in a certain period of time and measures tangible constant flow rate apace, so that can the bigger air-loss of fast detecting.

An equipment 9, some electric leads for example, be used to transmit a leakage signal and operate this valve 5, so that under a situation of leaking or may leak, make this valve enter the closed position valve 6 or the intervening vaive 7 of the ingress of a branch conduit (but advantageously be positioned at).

This device comprises that is parallel to the buffer cell 11 that a conduit 12 is installed, and this conduit is connected to valve 6 on allocation units 1 and the peripheral unit.Buffer cell 11 has a volume that changes between minimum volume shown in Fig. 4 and a maximum volume shown in Figure 5.This buffer cell 11 comprises an impermeable pliable and tough film spare 13 of gas.Film spare 13 is related with a parts 13A, and the weight of these parts is enough to produce a power (under the effect of gravity) that is tending towards promoting film spare 13A downwards.Parts 13A has a hollow article 13B, and it is designed to receive 17 1 rod member 14A of a fixing wall spare of support.This rod member 14A can move in hollow article 13B when film spare 13 moves up and down.Rod member 14A and this hollow article 13B are formed for a guiding elements of a spring 18.Film spare 13 overcomes the weight of plate 13A and spring 18 and moves upward, and when being in raised position, the gravity of the power of this spring 18 and plate 13A pushes back this film spare downwards.Advantageously enclosed space 14 comprises a part 12A of this conduit 12, and advantageously comprises the device of quick assembling or connection, is used for that it is attached to these allocation units and may be connected to another part of conduit 12B or be attached to the end of conduit 3.Enclosed space 14 comprises a sensor 15,16, is used to measure the position of film spare when minimum volume and the position during maximum volume.For example, sensor 15 is fastened to rod member 14A, and when film spare is in lower position, activates, and when the position of this rise, this finger shape plate of this hollow article 13B acts on the sensor 16 by the finger shape plate of this hollow article 13B.This sensor 15 and 16 sends a signal to the control gear 6A of control valve 6.When sensor 15 receives the pulse of a finger shape plate that belongs to this hollow article 13A, this sensor 15 send a signal to this control apparatus 6A to open valve 6 and to allow gas inletting device 4 and distribution network or loop 2 from this inlet 3.The gas of inletting device 4 partly is used for filling buffer cell 11 and film spare 13 is moved up.Therefore this film spare moves upward, and is in its maximum value up to the volume of this buffer cell 11.This moment, sensor 16 is activated by the finger shape plate that belongs to this hollow article 13A and sends the control apparatus 6A of a signal to control valve 6, so that close the latter.

Advantageously this enclosed space 14 comprises one or more valves, enters this enclosed space to allow gas to discharge this enclosed space when this bladder is inflated when this bladder is exitted.Advantageously this or this several valves has assembled a system, in case when being used for temperature around this valve and reaching temperature that is higher than a predetermined temperature, just they are locked in closed position, for example in case detect a temperature above 100 ℃.In a possible embodiment, as long as the outer temperature of enclosed space is lower than a definite temperature value, this valve just is shown in an open position so that allow gas discharge or enter this enclosed space, in case and the outer temperature of this enclosed space just is in a closed position (advantageously closing automatically) above this temperature value of determining.

Therefore these utensils 10 come air feed by the gas that is present in the buffer cell 11.Gas in the buffer cell 11 is easier to be left and enters these peripheral unit 10 through conduit 2 in order to make, and spring 18 acts on the plate 13B of film spare.Advantageously this spring is set at, when valve 6 is closed, in its extension state (about a compression position),, perhaps is present in the gas pressure substantial constant in this buffer cell by this spring or a plurality of spring 18 applied force substantial constant.The elastic load of this spring or several springs can or preestablish in factory or can adjust according to some parameter of this network, for example pressure, gas type etc.Similarly, the weight of this plate 13A can change, for example by gaining in weight, to increase the gravity on this film spare 13.When valve 6 was closed, this flow measurement 50 was measured the variation of one zero flow velocity or flow velocity in a period of time.Therefore the control unit 6A design with control valve 6 is used for sending a signal to this measuring equipment 50 or to equipment 8.

If flow velocity be time period of zero surpass a definite minimum time section (time period of at least 0.5 times that for example is equivalent to filled chamber 11 needed times) if or in a determining time, detect a change in flow greater than a determined value (for example peripheral unit normal consumption amount a percentage or a multiple), this measuring equipment 50 is just determined not leak, if and be when being shorter than time period of zero described definite time period or in a definite time period, do not detect described minimum flow velocity and change when this flow velocity, this equipment 50 sends a leakage signal makes it close this valve 5 to this control apparatus, and might be 7.Advantageously launch a luminous signal or radio wave signal, leak or a potential leakage to represent one.

Although flow measuring device 50 only advantageously receives the information that a path of whether flowing in this conduit 3 by this conduit 3 and gas about this valve 6 is closed, providing transmission of Information in some more complicated systems between this control unit 6A and this control unit 8, may be helpful and favourable.Similarly, in a definite maximum time period, (for example be equivalent to this buffer cell 11 is filled to time period more than the twice of its maximum volume needed time, particularly this buffer cell 11 is filled to more than three times of its maximum volume needed time) do not exist under one zero flow rate conditions or under the situation that valve 6 is not closed in a definite time period, device 6A determine to exist one leak or a potential leakage or these peripheral unit on a consumption problem.A signal of closing of control apparatus 6A transmission indication valve 6 and/or a shutdown signal are to a device of control valve 5 or valve 7, to cut off the gas channel that leads to this gas distribution apparatus 3 and may cut off the gas channel that leads to a dispensing apparatus 1a on the conduit 3 that is connected valve 6 and valve 7 upstreams then.Advantageously launch a luminous signal or a radio wave signal, to represent the problem of a leakage or a potential leakage and/or a consumption.For example, a such signal is sent to the ward that responsible individual, gas distributor, fireman, a building of monitoring these equipment is built, emergency service center or the like.A for example such signal is on the device that detect to leak and/or on this control unit of this main valve of control and/or be located immediately on the constant flow rate detector in this main valve downstream and launch.

Advantageously the maximum volume of buffer cell is determined according to the mean consumption of these utensils 10.This maximum volume should be excessive so that, when revealing generation, excessive gas from this buffer cell may be overflowed, and for can be clocklike and check the leakage of this distribution network in the compact time lag and/or check the consumption problem of one or more utensils 10 that this volume should be not excessive yet.

Advantageously valve

A device 50 that advantageously will be used to detect constant flow rate directly is installed in the downstream of main valve 5.The leakage of this device in can detected catheter 3.Particularly, when this valve 6 is in the closed position, normally installs 50 and can not detect air-flow.If detect a constant or continuous flow, such flow represents to exist a leakage.

According to the gas consumption that the one or more peripheral unit that are installed in dynamic storage body downstream carry out, this dynamic storage body is inflated continuously and is exitted.When the gas that uses from the dynamic storage body or when the dynamic storage body is being exitted, the closing of this dynamic storage body instruction valve 6.

Figure 12 is the schematic representation of another equipment, and it comprises the peripheral unit 10 that series of parallel is installed in this conduit 3.Each peripheral unit comprises a buffer cell 10 and can come adjoining land inflation and the dynamic storage body of exitting or device related according to gas consumption according to of the present invention with one.

Fig. 6 and 7 schematically shows according to another dynamic storage body of the present invention.This dynamic storage body 4 comprises the buffer cell 11 of bellows 20 to limit a variable volume, the body spare 21 of the related definite weight in the top of these bellows, and perhaps recovery device of effect or spring on it are used for these bellows are returned its compression position.The load of these recovery devices of spring or a plurality of springs for example can pre-determine in factory or can adjust according to some parameter of this network, for example pressure, gas type etc.Similarly, can change the weight of body spare 21,, strengthen the gravity that acts on the film spare 13 for example by gaining in weight.

When (electromagnetism or mechanical) when valve 6 was opened, gas can flow to these peripheral unit 10 and partly flow in the buffer cell 11.

When buffer cell is saturated, (for example when body spare 21 acts on the sensor 16, brings valve 6 into operating position, therefore be drained to supply these this peripheral unit 10 from the gas of buffer cell 11.When this body spare 21 acts on the sensor 15, bring valve 6 circulation of open position into the filling of repetition buffer cell 11.

In the embodiment of Fig. 8, buffer cell 11 has a constant predetermined volume.This buffer cell 11 is related with a compressor 25, is used under high pressure gas storage among this buffer cell.Therefore the gas pressure in this buffer cell can equal to be supplied to 1.5 to 10 times of gas pressure of device 4.On the position of Fig. 4, some are supplied to the gas of this device 4 to be taken away to be stored in the buffer pool 11 by compressor 25.In this position, valve 6 is shown in an open position.When the pressure in this storehouse arrived a definite pressure (high pressure), pressure transducer or pressure switch 26 were sent a signal, instructed the shutdown with compressor 25 of closing of this valve 6.The gas that is present in the buffer cell 11 flows to these peripheral unit by a regulator 27 (Fig. 9) then.When the pressure in this buffer cell 11 drops to a definite value when following, send a signal to open valve 6 and to restart this compressor.Can repeat the filling circulation of this surge volume then.In the embodiment of Figure 10 and 11, it is similar to the embodiment of Fig. 6 and 7, and buffer cell 11 is limited in the jacket member 14.This jacket member has a chamber 28 that is positioned at outside the buffer cell 11.This chamber 28 is filled with a kind of liquid and links to each other with a cylinder body 29, and 30 motions of a piston are arranged in this cylinder body, and for example, this motion is controlled by a motor 31.

On the position of Figure 10, valve 6 is in the open position.On this position, motor 31 is in neutral position (if gas enters buffer cell 11, allowing this piston 30 motions), perhaps is in this piston 30 to be return so that liquid is extracted the position of chamber 28 to cylinder body 29 out.This buffer cell therefore can receiver gases.

When piston had arrived a precalculated position, a sensor sent signal and signal that the instruction motor moves forward piston 30 of a throttle down 6.Liquid in the cylinder body is advanced among the chamber 28 then, so as from this buffer cell with gas propulsive to these peripheral unit 10.When piston 30 arrives one corresponding to a minimum volume of the liquid in this cylinder body really during fixed position, a sensor sends a signal and opens valve 6 and stop motor, perhaps orders motor to make this piston toward swivel motion.Circulation can continue then.

Similar among the device of Figure 13 and Fig. 4, have the one or more passages 50 that lead to one second enclosed space 51 except enclosed space 14, this passage allows via one or more holes, and preferably the valve 52 by one or more certain type carries out outside the air exchange with the external world.A fire-retardant film spare 53 particularly can fire-retardant film spare by a coating, is arranged in this second enclosed space 51.

When bladder or buffer cell 11 expansion obstruction recovery devices 18, the air of enclosed space 14 leaves this enclosed space 14 and goes to fill the zone 55 that is positioned at the enclosed space 51 under the fire prevention film spare.This fire prevention film spare 53 can enlarge then, so that by these valves, drives air from second enclosed space, and this air is positioned at an other side of film spare 53.

When the gas from buffer cell is sent to this network, just when the volume of buffer cell is reduced, it is (pliable and tough to be positioned at fire prevention film spare 53, advantageously stiff, the air of second enclosed space film spare) enters enclosed space 14, and air enters this second enclosed space 51 by valve or several valves 52.Therefore so a kind of film spare is as a kind of fire prevention measure.

In order further to improve fire safety evaluating, advantageously this passage or these passages assembling or connect the coating of a plurality of elements 56 (for example some surround the bead at the edge in holes) or some expansions or can seal the expanding product in these holes 50.

Claims

1; a kind of method; be used for leaking at a distribution system or its certain part detected gas; perhaps be used for determining a distribution system or its normal or unusual operation of certain part; described system or part are connected to a gas source or delivery member; wherein detect the gas flow rate that flows to described distribution system or its certain part from this gas source; described method is characterised in that; this distribution system or its certain part; the one or more peripheral unit that particularly is installed on this distribution system and can spent gas is associated with a dynamic device or battery; this battery comprises at least one buffer cell and a control gear; when this buffer cell is filled the gas flow that is greater than or equal to first a predetermined amount; this control gear can interrupt the gas supply of this device; and be at least when this control gear is interrupting the gas supply of this device, determine from the gas flow rate of this delivery member or do not have such flow velocity.

2, the method of claim 1, wherein at least when this control gear is interrupting the gas supply of this device, if be not lower than one on the flow velocity and definite allow the variation that changes if in a definite very first time section, do not have zero flow velocity or the flow velocity that is substantially zero and/or in second a definite time period, have the flow velocity of a non-zero and/or in the 3rd a definite time period, do not exist, advantageously on the volume less than 5%, preferably on the volume less than 10%, preferably on the volume less than 15%, send that an indication is leaked or potential leakage or the unusual signal that consumes, described signal is advantageously used in and interrupts to the gas supply of this dynamic device or battery circuit upstream at least a portion and/or interrupt a main gas supply of this dispensing loop.

3, method as claimed in claim 1 or 2, wherein at least when this control gear is interrupting the gas supply of this device, if if in a definite very first time section, determined zero flow velocity or the flow velocity that is substantially zero and/or on the 3rd a definite time period, determined on flow velocity a variation greater than a definite minimum change, advantageously at least 5% variation on the volume, preferably on the volume at least 10%, especially on the volume at least 25%, send an indication and do not exist and leak or the signal of indication normal consumption.

4, as any one described method in the claim 1 to 3, (wherein said control gear allows gas to flow to this device or battery from this gas feed at least one primary importance to it is characterized in that making the device of this interruption gas supply, at least fill this buffer cell when being less than or equal to predetermined second amount with the gas flow of box lunch in this buffer cell) and second place (wherein when the gas flow in this buffer cell was measured more than or equal to described predetermined first, described control gear interrupted the gas supply of this device) between switching.

5, as any one described method in the claim 1 to 4, it is characterized in that using a buffer cell that can hold a certain amount of gas, this a certain amount of gas is at least corresponding to employed average gas amount in a period of time, this time period and needed time at least one times and preferably twice is corresponding at least, there is not gas consumption at the described distribution system that is arranged in this device downstream or its certain part, so that fill this buffer cell with a gas flow that is equal to, or greater than described first prearranging quatity.

6,, it is characterized in that using the chamber of a variable volume as the described method of above-mentioned any one claim.

7, as the described method of above-mentioned any one claim, it is characterized in that using a buffer cell, this buffer cell is located with a conduit that is associated with this distribution system or its certain part or peripheral unit with paralleling, advantageously it is positioned at the downstream of this distribution system, in particular the upstream of this peripheral unit or its certain part.

8, as the described method of above-mentioned any one claim, it is characterized in that this buffer cell is configured to receive a certain amount of gas, this gas flow is corresponding to the consumption in a determining time, advantageously corresponding to a normal mean consumption, and be that if a certain moment at least in this time period does not detect of flowing to this device be gas flow zero or that be substantially zero, if and/or in the part of this time period or this time period, detect a constant gas flow, and/or do not detect on the volume and be lower than 5%, advantageously be lower than a change in flow of 10%, then this control means interrupts the gas supply.

9,, it is characterized in that bringing pressure to bear on this buffer cell so that the gas that helps to remain in this buffer cell is discharged this buffer cell as the described method of above-mentioned any one claim.

10, as the described method of above-mentioned any one claim, be used to comprise a distribution system of a series of pipelines of the peripheral unit that leads to one or more spent gas, article at least two, pipeline, each pipeline that preferably leads to one or more peripheral unit has all assembled a device, this device comprises at least one buffer cell and a control gear, this control gear can interrupt the gas supply of this device when this buffer cell is charged into the gas flow that is greater than or equal to one first prearranging quatity, wherein for its one or more peripheral unit be at least two pipelines of gas consumption body determine from this delivery member and be fed to this device gas flow velocity or do not have such flow velocity.

11; can produce a kind of dynamic device or battery that gas flow rate changes; utilize described any one method of claim 1 to 10; this variation can be used for determining for example to flow to the gas leakage of one or more peripheral unit in a distribution system or its certain part; perhaps determine a normal or abnormal operation of a distribution system or its certain part; described system or part are connected to a gas source or delivery member; described dynamic device or battery are designed to be installed in the downstream of the part of a distribution system or a kind of like this system; perhaps be associated with one or more peripheral unit; this device or battery comprise a coupling connection part; this coupling connection part is designed to be coupled to detection from this gas source to described distribution system or a device of the flow velocity of the gas of its certain part; described detection device with can send that an indication is revealed or potential leakage or a device revealing non-existent signal are associated; described device or battery comprise at least one buffer cell and a control gear; this control gear is used for being filled at this buffer cell and interrupts the gas supply of this device or battery with more than or equal to the gas flow of one first prearranging quatity the time, this detection device be designed to determine to come from this delivery member of supplying described device or gas source gas flow velocity existence or do not exist.

12, device as claimed in claim 11, this device is associated with a device that detects flow velocity, wherein, at least when this control gear is interrupting the gas supply of this device, if if in one first determining time, do not exist one be zero or one be zero flow velocity and/or when in one the 3rd determining time, having the change in flow that changes less than a definite permission substantially, advantageously on the volume less than 5%, preferably on the volume less than 10%, preferably on the volume less than 15%, the device that is associated with this detection device can send that an indication is revealed or potential leakage or the unusual signal that consumes.

13, as claim 11 or 12 described devices, this device is associated with a device that detects flow velocity, wherein the device that is associated with this detection device is designed at least when this control gear is interrupting the gas supply of this device, if if in one first determining time, determined one be zero or be the change in flow that zero flow velocity and/or determined in one the 3rd time period changes greater than a definite minimum flow velocity substantially, advantageously on the volume at least 5%, preferably on the volume at least 10%, especially on the volume at least 25%, send an indication and do not exist and reveal or the signal of indication normal consumption.

14, as any one described device in the claim 11 to 13, (this position allows gas to flow to this device from this gas spare or gas source at least one primary importance to it is characterized in that being designed to make this device that interrupts the gas supply by this control gear, when being less than or equal to one second definite amount with the gas flow in this buffer cell of box lunch, at least fill this buffer cell) and second place (when the gas flow in this buffer cell is taken in the position is determined amount more than or equal to described first, interrupting the gas supply of this device) between switch.

15, device as claimed in claim 14, it is characterized in that this control gear comprises at least one sensor, this sensor is designed to determine or estimate to be present in the gas flow in this buffer cell, and (this position allows gas to flow to this device from delivery member or gas source at least one primary importance to be to be designed to make this device that interrupts the gas supply by this control gear, when determining that with box lunch one or this sensor gas flow in this buffer cell is determined amount less than one second, at least fill this buffer cell) and second place (when be taken in this position one or this sensor determine that the gas flow in this buffer cell is determined amount more than or equal to described first, interrupting the gas supply of this device) between switch.

16, as the described device of one of claim 11 to 15, it is characterized in that this buffer cell is configured to receive a certain amount of gas flow, this gas flow is at least corresponding in a period of time by the employed average gas amount of this distribution system, this time period and needed time at least one times and advantageously twice is corresponding at least, being arranged in the described distribution system in this device downstream or its certain part does not have gas consumption, so that fill this buffer cell with a gas flow that is greater than or equal to this first definite amount.

17,, it is characterized in that this buffer cell is the chamber of a variable volume as any one described device in the claim 11 to 16.

18, device as claimed in claim 17, it is characterized in that it comprises a first sensor that is designed to determine this chamber location, this position is corresponding to a volume less than a definite minimum volume, and comprise one second sensor that is designed to determine this chamber location, this position is corresponding to a definite maximum volume.

19, as any one described device in the claim 11 to 18, it is characterized in that this buffer cell parallels the location with a pipeline, this pipeline is designed to connect this distribution system or other certain part arrives this gas source or delivery member.

20, as any one described device in the claim 11 to 19, it is characterized in that this buffer cell is configured to receive a certain amount of gas, this gas flow is corresponding to a consumption, advantageously corresponding to a normal average consumption that (advantageously is less than 15 seconds) in the definite time period.

21,, it is characterized in that a device acts on this buffer cell, so that apply the power of the filling of this buffer cell of antagonism as any one described device in the claim 11 to 20.

22, as any one described device in the claim 11 to 21, it is characterized in that the valve that this buffer cell and this buffer cell of control are filled is associated, advantageously described valve is a safety check, and is associated with another valve of controlling this buffer cell gaseous emission.

23; dynamic device that can produce that gas flow rate changes or battery; according to any one described a kind of method in the claim 1 to 10; this variation can be used for determining that a distribution system or its certain part are to for example gas leakage of one or more peripheral unit; perhaps determine the normal or abnormal operation of a distribution system or its certain part; described system or part are connected to a gas source or delivery member; described dynamic device or battery are designed to be installed in the downstream of the part of a distribution system or such system; perhaps be designed to be associated with one or more peripheral unit; this device or battery comprise at least one buffer cell; device is (when this buffer cell is filled with more than or equal to the gas flow of one first prearranging quatity the time; this device can interrupt the gas supply of this device or battery; and be used for a device to the gas pressurized that is present in this buffer cell; the described device that is used for superheated steam that is arranged in this buffer cell is a system, and this system comprises at least one element that is selected from one or more compressors; act on a device at least one moving wall of this buffer cell; and their combination.

24, device as claimed in claim 23 or battery, it is characterized in that this buffer cell has the volume that can change between a minimum volume and maximum volume, and be that a mechanical device acts at least one moving wall of this buffer cell, to reduce the variable volume of this buffer cell.

24, device as claimed in claim 23 or battery is characterized in that this buffer cell has at least one moving wall, and at least one action of gravity of an assembly of variable volume that is designed to reduce this buffer cell is on this moving wall.

25, device as claimed in claim 23 or battery, it is characterized in that this buffer cell comprises the delivery member of at least one moving wall and at least one gas, this gas is not taken from this gas distributing system, and this distribution system is filled this buffer cell that is designed to reduce the buffer cell variable volume.

26, device as claimed in claim 23 or battery, it is characterized in that this buffer cell comprises a moving wall, described moving wall has towards face of this buffer cell with towards the opposing side in a control room, and is that this device or battery comprise a device to this control room pressurization.

27, described device of claim or battery as described above is characterized in that this device to this control room pressurization is the device that liquid or gas are provided for this control room.

28, device as claimed in claim 23 or battery is characterized in that it comprises at least one system, and this system comprises at least one spring, and some that perhaps act on directly or indirectly on the moving wall of this buffer cell are replied elements.

29, device as claimed in claim 23 or battery is characterized in that it comprises and are used for supply gas at least one compressor of this buffer cell that its mode is for to compress by the gas that relatively flows through this device or battery.

30, as any one described device or battery in above-mentioned these claims, it is characterized in that it comprises that moving wall being used for this buffer cell and at least one are used to the device of this buffer cell supply gas, its mode is to compress by the gas pressure that relatively flows through this device.

31,, it is characterized in that it comprises and be used for the regulator that pilot pressure breaks away from this device or battery as any one described device or battery in above-mentioned these claims.

32, a kind of gas distributing system, advantageously have the one or more peripheral unit that are connected to a gas source or delivery member, any one described dynamic device or battery are associated in wherein said system and/or one or more peripheral unit and the claim 11 to 31.

33, a kind of gas distributing system, comprise a series of pipelines, every pipeline be used to can spent gas one or more peripheral unit supply gas, wherein any one described dynamic device or battery are associated in each of at least two pipelines or two peripheral unit and the claim 11 to 31.

34, be used for a peripheral unit of spent gas, described peripheral unit comprises a service, and any one described dynamic device or battery are associated in this pipeline and the claim 11 to 31.