CN109595464A - Gas leakage detection system - Google Patents
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- CN109595464A CN109595464A CN201811112211.9A CN201811112211A CN109595464A CN 109595464 A CN109595464 A CN 109595464A CN 201811112211 A CN201811112211 A CN 201811112211A CN 109595464 A CN109595464 A CN 109595464A
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- leakage detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 174
- 239000000567 combustion gas Substances 0.000 claims abstract description 38
- 230000000246 remedial effect Effects 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000004044 response Effects 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 description 9
- 238000004880 explosion Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010010144 Completed suicide Diseases 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 235000021152 breakfast Nutrition 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 208000016253 exhaustion Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a kind of gas leakage detection systems comprising: system server；Gas meter, flow meter is used to monitor and supplies combustion gas within the scheduled period, and during which, the combustion gas of supply is consumed in a discontinuous manner.Gas meter, flow meter includes the valve for supplying combustion gas, and the measuring device of measurement gas supply amount；With timer, the gas supply time is recorded；Also there is control device, it is suitable for: determine at least one parameter related with gas supply amount and gas supply time；Parameter is compared with relatively high first threshold and relatively low second threshold, second threshold is chosen less than the average value of combustion gas supply in the scheduled period；If parameter is more than first or second threshold value respectively, first or second control signal is provided；And triggering first or second movement device, first or second remedial action is realized for response first or second control signal respectively.It further include communication device, the communication being used between control device and system server.
Description
Technical field
The present invention relates to a kind of for supplying the gas leakage detection system of fuel gas, such as, but not limited to coal gas or day
Right gas.
Background technique
Nowadays, most of house gas appliances have been equipped with flame failure device as standard security equipment.In order into
One step improves natural gas safety, and family will install gas detector, and visit in gas detector usually using carbon monoxide and methane
Survey device.However, the validity of these safety devices depends on their installation site, their sensitivity and environmental factor, example
Such as neighbouring pollutant.In particular, they are limited in the space around specific gas appliance and gas appliance.
The present invention is directed to by providing new or otherwise improved gas leakage detection system mitigates or at least
Mitigate one or more above problems or disadvantage.
Summary of the invention
According to the present invention, it provides a kind of for detecting the gas leakage inspection for being supplied to the fuel gas leakage of specific position
Examining system comprising: system server；And gas meter, flow meter, setting is in the position, for monitoring within the scheduled period to institute
Rheme sets supply combustion gas, and during this period, the combustion gas of supply is consumed in a discontinuous manner.Gas meter, flow meter includes passing through its Xiang Suoshu
The valve of combustion gas, and the measuring device for measuring gas supply amount are supplied in position；With record time device, it is used for
Record the gas supply time；Also there is control device, it is suitable for: when determining at least one with gas supply amount and gas supply
Between related parameter；Parameter is compared with two threshold values, i.e., relatively high first threshold and the second relatively low threshold
Value, wherein the second threshold is chosen less than the average value of combustion gas supply in the scheduled period；If parameter surpasses respectively
First threshold or second threshold are crossed, then first control signal or second control signal are provided；And triggering the first movement device or
Second movement device is realized the first remedial action or second is remedied for responding first control signal or second control signal respectively
Movement, in response to the first remedial action, gas supply is instantly terminated, on the contrary, combustion gas supplies in response to second remedial action
It would not be instantly terminated.It equally include communication device, the communication being used between control device and system server.
Preferably, control device is suitable for by reference to supply relative to supply time (that is, delivery rate) to determine
State parameter.
Preferably, control device is suitable for determining the parameter by reference to delivery rate is more than the duration of threshold value.
It is highly preferred that control device is adapted to determine that the first parameter related with delivery rate to be compared with first threshold
Compared with, and determine to first parameter be more than first threshold value described in duration relevant second parameter with second threshold into
Row compares.
It is highly preferred that the remedial action includes being more than the second threshold in response to second parameter and closing described
Valve, wherein the first threshold indicates the case where combustion gas instant serious leak.
It is highly preferred that the remedial action includes being more than the second threshold in response to second parameter and arranging to access
The position is to be checked, wherein the first threshold indicate combustion gas gradually minor leakage the case where.
In a preferred embodiment, control device is suitable for:
Parameter related with delivery rate is determined, for carrying out with relatively high first threshold and relatively low second threshold
Compare；And
If delivery rate is more than first threshold within the relatively short period, first control signal is provided；And
If delivery rate is more than second threshold within the relatively long period, second control signal is provided.
It is highly preferred that the movement device is suitable for:
It responds first control signal and closes valve；And
Response second control signal arrangement accesses the position to be checked.
It is highly preferred that the time recording device is suitable for recording the gas supply time at certain intervals.
It is highly preferred that the interval corresponds to the combustion gas by the measurable minimum of measuring device.
It is highly preferred that the interval is substantially ten seconds.
Preferably, the relatively short period includes multiple intervals, the time interval and the delivery rate
At least once reproduction of the correlation for the parameter compared with the first threshold.
It is highly preferred that the relatively short period includes three intervals.
Preferably, the relatively long period includes multiple intervals, each interval substantially one hour, to indicate and
Per hour reproduction of the delivery rate correlation for the parameter compared with second threshold.
It is highly preferred that the relatively long period includes 24 intervals (that is, a daily circulation).
Preferably, the gas meter, flow meter includes the valve control for controlling the operation of the valve, and operation includes described in closing
Valve.
Preferably, the time recording device and the control device are arranged on the gas meter, flow meter.
Preferably, the communication device includes one in fixed data line and radio link.
Detailed description of the invention
Now, by reference to attached drawing, only as an example, the present invention will be described in further detail, in attached drawing:
Fig. 1 is the schematic diagram of the embodiment of gas leakage detection system according to the present invention, which includes and system
Server communication and the gas meter, flow meter that can be communicated with configuration tool；
Fig. 2 is the gas meter, flow meter of Fig. 1 and the photographs of configuration tool；
Fig. 3 is that the height for the gas leakage detection system for showing Fig. 1 cuts the flow chart of function (High Cut Function)；
Fig. 4 is the flow chart of the continuous gas flow monitoring function for the gas leakage detection system for showing Fig. 1；
Fig. 5 is the curve graph of abnormal consumption rate caused by indicating to be disconnected by the gas-fired equipment in gas leakage accident, by
The height of Fig. 3 cuts function treatment；And
Fig. 6 be show as be unaware that/unwitnessed gas leakage caused by durable cycles consumed chart, by scheming
4 continuous gas flow monitoring function treatment.
Specific embodiment
Referring to Fig. 1 to Fig. 6 in attached drawing, the primary clustering for embodying gas leakage detection system 10 of the invention is shown,
Gas leakage detection system 10 is for detecting the leakage for being supplied to specific position with fuel gas for users to use.Gas leakage
Detection system 10 includes system server 90, is arranged in rear end and is operated by relevant gas company, and the setting of gas meter, flow meter 100 exists
Certain position, for monitoring the combustion gas for being supplied to the position, and the record time device for recording the gas supply time
510.Recording the time especially includes date/time and gas supply duration.Time recording device 510 can be by gas meter, flow meter
Clock or timer 510 in 100 provide, or are provided in the form of equivalent function.
Gas meter, flow meter 100 includes valve 200, combustion gas is supplied to the position by valve 200, and for measuring gas supply amount
Measuring device 300.Valve 200 is preferably motor-driven valve, and operation can be controlled by the valve control of gas meter, flow meter 100, so that
Valve 200 can be closed in response to control signal.
Measuring device 300 is usually mechanical gas flowmeter, is connected to from fuel gas inlet 101 to gas outlet 102
Inside blast tube in, for measure and provide on the basis of accumulation supply or consume combustion gas volume instruction.Reading by
One group of dial 310 is presented, wherein the dial for the last one number has magnet, for by neighbouring reed switch
320 detections, so that the volume of measurement is converted into digital signal from mechanical signal.
As described herein below, it is measured with regular intervals and obtains supply/consumption combustion gas volume in digital form, between being somebody's turn to do
It is divided into every 10 seconds.Timer 510 determines the consumption at the interval and determining monitoring measurement between measured value to carry out combustion gas
The interval (i.e. every 10 seconds and 24 hours every) of leak detection, as described below.
Gas leakage detection system 10 includes control device 500, control device 500 can by such as central processing unit or
CPU 500 is provided, and the central processing unit or CPU 500 are programmed to execute and detect related various functions with gas leakage,
Including following basic function:
Determine at least one parameter related with gas supply amount and gas supply time；
Parameter is compared with predetermined threshold or corresponding predetermined threshold；And
If parameter is more than threshold value, control signal is provided.
Control device (i.e. CPU 500) is mounted on gas meter, flow meter 100, so that instrument 100 be made to become such " Intelligent Instrument
Table ": original place and immediately processing can be executed to supply and time data.CPU 500 is via communication device 400 and system service
Device 90 communicates, and communication device 400 includes one of fixed data line and radio link, which is based preferably on
GPRS, i.e. General Packet Radio Service.
CPU 500 determines parameter relative to supply time by reference to supply, corresponds to fill rat or consumption rate
(that is, consumption rate=consumption combustion gas volume/elapsed time).More specifically, CPU 500 is more than threshold value by reference to delivery rate
Duration determine parameter.Movement device be included in CPU 500 in or it is otherwise associated with CPU 500, with
In triggering, to be subsequently responsive to control signal enforcing remedies movement.
In most of gas leakage accidents, the mode of gas supply/consumption mode and normal use is very different.
In particular, abnormal consumption rate and long-time cycles consumed are two main features (or symptom) of gas leakage.In the first feelings
In condition A, such as in the case where pipeline disconnects, either as intentionally disconnected in suicide situation or due to caused by damage
Unexpected to disconnect, gas consumption will rise violently within the very short period.This is related with abnormal consumption rate, indicates that combustion gas occurs immediately
The case where serious leak.On the contrary, gas consumption (leaks in the second situation B there are unheeded gas leakage
Amount) it can be registrable, however very little and usual quantity is seldom, last up to the durable period.This and long-term consumption are all
The case where phase is related, represents gradually minor leakage combustion gas.
For situation A, remedial action includes the inner valve 200 for closing gas meter, flow meter 100, to terminate gas supply.For feelings
Condition B, remedial action include arranging to access the position to be checked.In any case, CPU 500 will be via communication device
400 send caution signal to system server 90, to carry out subsequent action immediately.It is contemplated that these remedial actions can be single
Solely uses or be applied in combination.
Gas supply is monitored by developing the algorithm for the operation of the CPU 500 in gas meter, flow meter 100, can identify this
The abnormal gas consumption mode of kind, and speculate potential gas leakage accident.In addition, by being used in gas meter, flow meter 100
Or electric gas valve 200 is added to improve safety.Once detecting suspicious gas leakage, valve 200 can close immediately,
And with the caution signal for being sent to gas company, to take follow-up action immediately.
Gas leakage situation A and B above-mentioned have denominator, the i.e. relationship of consumption rate and cycles consumed.In order to
By executing various functions using this relationship, it is related with delivery rate (i.e. consumption rate) that CPU 500 is programmed to determination
First parameter, for being compared with first threshold；And the second parameter (i.e. consumption period) relevant to the duration,
In second parameter, consumption rate (i.e. the first parameter) is more than first threshold to be compared with second threshold.
The two parameters between both of these case be it is comparable but quite different, actually on the contrary, because
For situation A, although consumption rate is relatively high, and elapsed time is relatively short, and for situation B, consumption rate is relatively
Low and elapsed time is relatively long.As described below, object gas leakage detection system 10 is based on similar algorithm but using different
Sets of threshold values, these situations are handled by using various functions.
These threshold values (related with gas consumption rate and gas consumption time, i.e. monitoring period of time) are by using configuration tool
(such as intelligent pad 80 of operation proprietary program(me) or app) and is configured in gas meter, flow meter 100, and uses opposite short-range communication protocol
(such as bluetooth) is communicated with CPU 500.
Height cuts function
The function is intended to infer that the gas leakage accident due to caused by the disconnection or damage of gas-fired equipment (such as is being committed suiside
In the case where), wherein gas consumption rate has abnormal high jump, i.e. situation A in shorter time period.In this case
Under (i.e. abnormal consumption rate), first threshold and second threshold are selected as 360ft3/ hr and 30 second.
First threshold is selected to be higher than maximum normal gas consumption rate (CMax) but lower than the freedom under specific regular supply pressure
Leak rate (CL).Under the regular supply pressure of 1.5KPa, free slip (CL) it is calculated as about 413ft3/hr。
Maximum normal gas consumption rate (CMax) be defined as the maximum normal home gas consumption rate in related supply place, i.e.,
Summation (the ∑ R of maximum gas appliance gradingMax) multiplied by permissible error (such as 10%) appropriate.
If the consumption rate that gas meter, flow meter 100 records is greater than maximum normal gas consumption rate (CMax), then it assume that and have occurred
Gas leakage.Therefore, consumption rate (CT) first threshold can be set as just above maximum normal gas consumption rate (CMax)。
Only by taking the typical family place of one, Hong Kong as an example, the sum of highest rated value of gas appliance (∑ RMax) about
326ft3/ hr, as shown in the table:
Based on above-mentioned calculating, gas consumption rate (CT) first threshold be set as 360ft3/hr。
In the case where gas leakage is in excess flow velocity, monitoring interval should be short enough, gathers to avoid leakage combustion gas, because
It may cause explosion for this.However, smallest record consumption (RC of the monitoring interval by gas meter, flow meter 100Min) limitation, this is
By 300 measurable minimum gas amount (i.e. measurement sensitivity) of instrument measuring device.The most of coal gas used for Hong Kong
The minimum registration of table (including theme water meter 100) consumes (RCMin) it is 1ft3。
For 360ft3(it is 0.1ft to/hr3/ s) gas consumption rate (CT) first threshold, be based on 1ft3Minimum step on
Remember consumption (RCMin), gas meter, flow meter 100 will spend about 10 seconds (MIn) Lai Dengji.Ten second period corresponds to minimum registration consumption
(RCMin), and it is used as monitoring interval.
The kitchen size in the typical household place in Hong Kong is 324ft3(i.e. 6ft × 6ft × 9ft), it is contemplated that related
The lower explosion limit (4.5%) of combustion gas type and the safety coefficient (20%) of lower explosion limit, the gas leakage amount (V of permissionA)
It is calculated as 3ft3.Therefore, the gas leakage volume (V of permissionA) 30 seconds (M will be usedT10 seconds (M of)-i.e.In) 3 times-with for combustion
A possibility that gas explosion is fried, which is established, reaches maximum receivable level, and the smallest record recorded such as gas meter, flow meter 100 consumes (RCMin) be
1ft3。
Based on the above situation, for the typical household place in Hong Kong, if in 30 seconds (MT) period every 10 seconds (MIn) record
360ft3The gas consumption rate of/hr (CT), i.e. a line 3 times, according to due to certain gas-fired equipment disconnection or damage caused by extremely
Consumption rate identifies gas leakage, as shown in the abnormal gas consumption mode of Fig. 5.
30 seconds monitoring cycles include three monitoring intervals, are divided between each monitoring 10 seconds.It is indicated and 360ft3/ hr's
First threshold (CT) compare and more than 360ft3First threshold (the C of/hrT) consumption (leakage) rate in weigh at least once
It is existing, or as described in total three times in reproduction twice.Reproduction can ensure that more reliable result.
With reference to the flow chart of Fig. 3, height cuts function since being counted with timer (frame 20) operating impulse, to calculate and monitor
Gas consumption rate and period (frame 21).Detecting abnormal gas consumption rate, i.e. consumption rate is super in three continuous 10 seconds periods
Cross 360ft3When/hr (frame 22), CPU 500 will be by issuing control signal to valve control, to close gas meter, flow meter 100 immediately
Internal valves 200 (frame 23), to terminate gas supply as remedial action.CPU 500 will also be by issuing control signal to it
Immediately to 90 notification event of system server (frame 24), so as to system server 90 subsequent can take further remedy it is dynamic
Make, such as to police report and/or arranges emergency scene inspection.
Continuous gas current monitoring function
The function is intended to find unheeded gas leakage, and wherein gas consumption rate (combustion gas stream leaked) continues spy
Not Chang period, i.e. situation B.Since gas consumption rate can be any small numerical value, without calculating consumption rate threshold value
For being compared to identification leakage.On the contrary, discovery is only needed by reference to above-mentioned 1ft3Smallest record consumption (RCMin)
To monitor: continuously reaching the durable period with the presence or absence of any consumption.Therefore, in this case (that is, durable cycles consumed),
First threshold is selected as 1ft3/hr。
Normal operating for gas appliance in family, when gas appliance is seldom used continuously up to longer in one day in user
Between or more long duration (i.e. 24 hours), therefore, as monitoring stage of exhaustion (MT1) second threshold.
Gas consumption, such as and preferably per hour (M are monitored at certain intervalsIn1).The time interval of this hour with
1ft3Second threshold (RCMin) compare and more than 1ft3Second threshold (RCMin) consumption (leakage) rate weigh per hour
It is existing.Monitoring cycle (i.e. 24 hours) is spaced and (is divided into 1 hour between i.e. each monitoring) by 24 monitorings and formed, and represent one it is daily
Period.
Therefore, in the typical household example in Hong Kong, if (MIn1) is recorded per hour during 24 hours (MT1)
1ft3Gas consumption (leakage) rate of/hr, then can be assumed based on the durable consumption period and identify gas leakage by not anticipating
The gas leakage known causes, as shown in the abnormal gas consumption mode of Fig. 6.
With reference to the flow chart of Fig. 4, continuous gas flow monitoring function is counted with operating impulse and timer (frame 30) starts,
To calculate and monitor gas consumption rate and period (frame 31).Detecting the durable gas consumption period, i.e. consumption is recorded 24
When hour (frame 32), CPU 500 will issue control signal (frame 33) to system server 90, for arrange to access the position with into
Row, which checks, is used as remedial action, to identify and repair gas leakage.
Other remedial actions may include sending message to notify the record user of gas meter, flow meter 100 to find that suspicious combustion gas is let out
Leakage.
It should be noted that above-mentioned second threshold (its smallest record consumption (i.e. 1ft for corresponding to gas meter, flow meter 1003)) can increase
Such as 2ft is arrived greatly3Or 3ft3, to allow to have such certain supply positions: in this position, water heater is by pilot flame point
Combustion, and user remains that pilot flame is in and lights state.
In summary, control device or CPU 500 determine parameter (i.e. consumption rate) relevant to delivery rate, with it is opposite
High first threshold (such as 360ft3/ hr) and relatively low second threshold (such as 1ft3/ hr) it is compared.Then, if disappeared
Consumption rate is more than first threshold within the relatively short period (such as 30 seconds), then CPU 500 provides first control signal, to close
Valve 200, that is, height cuts function.Alternatively, if consumption rate is interior more than second in the relatively long period (such as 24 hours)
Threshold value, then CPU 500 will provide second control signal, for arranging access checking position, that is, continuous flow monitoring function.This
Two functions continuously work.
With reference to the chart of the cycles consumed of Fig. 6, in scheduled period (such as 24 hours (MT1) during gas supply in certain
Interval (such as per hour (MIn1)) monitored by gas meter, flow meter 100.Under normal circumstances, the combustion gas of supply in a discontinuous manner by with
Family consumption.For example, combustion gas is only supplied under specific time period or particular event, as breakfast, lunch, supper or contour combustion gas of having a bath disappear
The consumption rate period.Other than these specific time periods, combustion gas will not theoretically be consumed by user, i.e. the combustion that is recorded of gas meter, flow meter 100
Gas consumption should be 0ft3.Illustratively, the threshold value that gas meter, flow meter 100 is monitored is a smallest record consumption (such as 1ft3), the threshold
Value also can choose as the average value less than combustion gas supply in the scheduled period.If the gas consumption that gas meter, flow meter 100 is recorded
Amount is greater than 1ft3, which, which then very likely exists, is unaware that or potential gas leakage.Gas meter, flow meter 100 will be via CPU
500 issue signal to administration section, for arranging to access the position check as remedial action, to identify and repair combustion
Gas leakage.Gas supply will not be instantly terminated when signal issues.
All gas-fired equipments in the covering of this gas leakage detection system 10 100 downstream of gas meter, flow meter, such as pipeline, flexibility are soft
Pipe, gas appliance and related fittings.The position and its sensitivity of its purposes and validity and these gas-fired equipments and environment
Factor is unrelated.It also supplements existing safety device, including flame failure device and gas detector.
Particularly, when the algorithm by being embedded in gas meter, flow meter 100 is inferred to gas leakage, gas leakage detection system
10 stop gas supply by supporting quick acting to provide protection.This Embedded algorithm and correlation function extend combustion gas
The purposes of table 100 provides meter reading to provide gas safe.
It is contemplated that control device 500 can be alternatively arranged at backend system server 90, to control participation theme
All user's gas tables of gas leakage detection scheme, are made these gas meter, flow meters more simply, such as only need to add
Add the communication module for communicating with system server, to inhibit the hardware cost of numerous user terminals.It that case, logical
Letter data can only include the supply data (i.e. quantity and time) from gas meter, flow meter to system server, and if necessary to or work as
It further include valve closing signal as exchange when needing.
The merely illustrative example of mode of the present invention provides, and those skilled in the art can not depart from appended claims
Defined in the scope of the present invention in the case where, various other modifications and/or change are carried out to described embodiment.
Claims (18)
1. a kind of gas leakage detection system, the gas leakage detection system is used to detect the fuel for being supplied to specific position combustion
Gas leakage comprising:
System server；
Gas meter, flow meter is arranged in the position, for monitoring to the gas supply of the position within the scheduled period, in this phase
Between, the combustion gas of supply is consumed in a discontinuous manner, and the gas meter, flow meter includes valve, is supplied by the valve to the position
Answer combustion gas, and the measuring device for measuring gas supply amount；
Time device is recorded, is used to record the gas supply time；
Control device, it is suitable for:
Determine at least one parameter related with gas supply amount and gas supply time；
Parameter is compared with two threshold values, described two threshold values are relatively high first threshold and relatively low second
Threshold value, wherein the second threshold is chosen less than the average value of combustion gas supply in the scheduled period；
If parameter is more than the first threshold or the second threshold respectively, first control signal or the second control letter are provided
Number；And
The first movement device or the second movement device are triggered, for responding the first control signal or second control respectively
Signal realizes the first remedial action or the second remedial action,
Wherein, in response to first remedial action, gas supply is instantly terminated, on the contrary, remedying in response to described second dynamic
Make, gas supply will not be instantly terminated；And
Communication device, the communication being used between the control device and the system server.
2. gas leakage detection system according to claim 1, wherein the control device is suitable for by reference to supply
Determine that the parameter, supply are delivery rate relative to supply time relative to supply time.
3. gas leakage detection system according to claim 1 or 2, wherein the control device is suitable for by reference to supplying
Answering rate is more than the duration of threshold value to determine the parameter.
4. gas leakage detection system according to claim 3, wherein the control device is adapted to determine that and the supply
Related first parameter of rate with first threshold to be compared, and determining and the first parameter is more than to continue described in first threshold
Second parameter of time correlation with second threshold to be compared.
5. gas leakage detection system according to claim 4, wherein the remedial action includes in response to described second
Parameter is more than the second threshold and closes the valve, wherein the first threshold indicates the feelings of the instant serious leak of combustion gas
Condition.
6. gas leakage detection system according to claim 4, wherein the remedial action includes in response to described second
Parameter is more than the second threshold and arranges to access the position to be checked, wherein the first threshold indicate combustion gas by
Gradually the case where minor leakage.
7. gas leakage detection system according to claim 3, wherein the control device is suitable for:
Parameter related with the delivery rate is determined, for carrying out with relatively high first threshold and relatively low second threshold
Compare；And
If delivery rate is more than first threshold within the relatively short period, first control signal is provided；And
If delivery rate is more than second threshold within the relatively long period, second control signal is provided.
8. gas leakage detection system according to claim 7, wherein the movement device is suitable for:
It responds first control signal and closes valve；And
Response second control signal arrangement accesses the position to be checked.
9. gas leakage detection system according to claim 7 or 8, wherein the time recording device is suitable for certain
The interval record gas supply time.
10. gas leakage detection system according to claim 9, wherein the interval corresponds to be filled by the measurement
Set the combustion gas of measurable minimum.
11. gas leakage detection system according to claim 10, wherein the interval is substantially ten seconds.
12. gas leakage detection system described in 0 or 11 according to claim 1, wherein the relatively short period includes more
A interval, the time interval are used for the parameter compared with the first threshold at least with the delivery rate correlation
It is primary to reappear.
13. gas leakage detection system according to claim 12, wherein the relatively short period is including between three
Every.
14. gas leakage detection system according to claim 9, wherein the relatively long period includes multiple
Every each interval substantially one hour, to indicate to be used for compared with the second threshold with the delivery rate correlation
The reproduction per hour of parameter.
15. gas leakage detection system according to claim 14, wherein the relatively long period includes 24
A interval, 24 intervals are a daily circulation.
16. gas leakage detection system according to claim 1, wherein the gas meter, flow meter includes for controlling the valve
Operation valve control, the operation includes closing the valve.
17. gas leakage detection system according to claim 1, wherein the time recording device and control dress
It installs on the gas meter, flow meter.
18. gas leakage detection system according to claim 1, wherein the communication device include fixed data line and
One in radio link.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK17110001.7 | 2017-10-03 | ||
| HK17110001 | 2017-10-03 |
Publications (1)
| Publication Number | Publication Date |
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