CN103134561A - Gas meter with safety control function and safety control method - Google Patents
Gas meter with safety control function and safety control method Download PDFInfo
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- CN103134561A CN103134561A CN2011103762944A CN201110376294A CN103134561A CN 103134561 A CN103134561 A CN 103134561A CN 2011103762944 A CN2011103762944 A CN 2011103762944A CN 201110376294 A CN201110376294 A CN 201110376294A CN 103134561 A CN103134561 A CN 103134561A
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Abstract
The invention provides a gas meter with a safety control function and a safety control method. The gas meter comprises a sensing unit, a control unit and a safety unit. The sensing unit is used for detecting the flow of gas which flows through the gas meter. The control unit is connected to the sensing unit and the safety unit which is located inside or outside the gas meter. Based on a detecting result of the sensing unit, whether abnormal conditions occur is determined, if the abnormal conditions occur, the safety unit is controlled to start safety precautions. The safety unit can comprise a safety valve and can close the safety valve to block flowing of the gas. The safety unit detects occurring of the abnormal conditions based on real-time flow obtained by the gas meter during the metering process, and automatically starts the safety precautions when the abnormal conditions occur. The gas meter with the safety control function is low in cost, easy to popularize, capable of timely, quickly and accurately detecting the abnormal conditions and automatically closing gas input, and ensures safety use of the gas.
Description
Technical field
The present invention relates to the gas metering technical field, be specifically related to a kind of gas meter, flow meter and method of controlling security thereof with safety control function.
Background technology
In the strategic planning of 12-5, emphasis proposes the clear and definite object of planning for the cleaning of the energy, the efficient utilization.It is increasing that rock gas enters the ratio of resident family and industrial environment, is an important component part of following clean energy resource.Meanwhile, the safe handling of combustion gas becomes more and more important, and the urgency of industry requirements such as " safe kitchens " is also more and more urgent.
In existing combustion gas was used, safety practice mostly used the alarm that detects based on concentration to complete.After gas leakage or booster occurring, in air, the concentration of inflammable gas reaches certain thresholding, can send alerting signal by the trigger alarm device.The security staff rushes towards the scene and carries out craft pass valve processing after obtaining alerting signal.Also having a kind of is that self-closing valve is installed, and mechanical valve namely is installed in pipeline in addition, and when the situation of booster occurring, pipeline pressure can promote valve and automatically rise, thereby valve-off improves the security that combustion gas is used to a certain extent.
Technique scheme is when being used for gas safe and ensureing, Shortcomings parts all mainly comprises:
1) control is delayed
The alarm that detects based on concentration is a kind of device of posteriority measure, gas leakage, booster or the flame-out situation such as emptying namely occur to a certain extent, and reach alarm threshold value near the installation site of alarm, just can start work.Often had relatively large gas leakage this moment, and warning message is when being delivered to the safety-command center and sending someone to investigate, and harm has often occured, and can not play the purpose of fast detecting and disposal.
2) function limitation
What alarm detected is the concentration of inflammable gas in air, and outside independent and gas pipeline system, if the ventilation situation of installation site is better, can't perceive the trace leakage of gas.Also can't stop in addition the undesired leakage of combustion gas that the artificial destruction behaviors such as gas, tube drawing steathily cause; Although self-closing valve can cut out when booster occurs, and owing to adopting the mechanical type principle, can't adjust flexibly the judgment threshold of booster, adaptability is relatively poor, and can't start under the effect that the gas trace is revealed or the normal discharge ultra-long time is revealed.
3) poor accuracy
Under the family expenses environment, alarm all is mounted in the kitchen.Due to Chinese eating habit, the irritative gas such as alcohol, acetic acid are often arranged in cooking process, and this just is easy to cause the wrong report of alarm, and then affects correctness and the seriousness of alarm, the situation that the resident resists use even occurs, and then cause combustion gas to use dangerous increase.
4) extra cost
Self-closing valve and alarm are all extra safety equipment, and the price of each equipment is far away higher than gas meter, flow meter.The equipment cost of high enterprise has limited the universal of product and measure to a great extent, makes the combustion gas environment for use of most residents family be in the dangerous situation that lacks safeguard protection.
Therefore, need a kind of gas safe control program, can detect in time, quickly and accurately multiple unusual condition and start safety practice, and cost low, easily popularize.
Summary of the invention
According to illustrated embodiments of the invention, a kind of gas meter, flow meter with safety control function has been proposed, comprising:
Sensing unit detects the flow of the combustion gas of the gas meter, flow meter of flowing through;
Control module is connected to sensing unit and is positioned at gas meter, flow meter inside or outside safe unit, based on the testing result of sensing unit, determines whether to occur unusual condition, and controls safe unit and enable safety precautions when determining unusual condition to occur.
Safe unit can comprise safety-valve, and safety precautions can comprise that the closed safe valve is with the blocking-up fuel gas flow.
According to illustrated embodiments of the invention, a kind of gas meter, flow meter method of controlling security has been proposed, comprising:
The flow through flow of combustion gas of gas meter, flow meter of detection;
Based on testing result, determine whether to occur unusual condition, and enable safety precautions when determining unusual condition to occur.
Enabling safety precautions can comprise: close and be positioned at the inner or outside safety-valve of gas meter, flow meter with the blocking-up fuel gas flow.
According to illustrated embodiments of the invention, the real-time traffic that obtains in metering process take gas meter, flow meter is the basis, detects the appearance of unusual condition, and automatically enable safety precautions when unusual condition occurring.This gas meter, flow meter with safety control function can be realized with the form of common gas meter, flow meter and install, cost is low, easy popularization, except conventional metering and billing function, can also detect in time, quickly and accurately the input of unusual condition and automatic self-closing gas, for the safe handling of combustion gas provides convenient, origin guarantee fast.
Description of drawings
By below in conjunction with description of drawings example embodiment of the present invention, will make of the present invention above-mentioned and other objects, features and advantages are clearer, wherein:
Fig. 1 shows the schematic block diagram according to the gas meter, flow meter of illustrated embodiments of the invention.
Fig. 2 shows a more detailed example of gas meter, flow meter.
Fig. 3 A and 3B show the schematic block diagram according to control module in the gas meter, flow meter of illustrated embodiments of the invention.
Fig. 4 shows the micro-leakage testing process according to illustrated embodiments of the invention.
Fig. 5 shows the tube bursting and leakage testing process according to illustrated embodiments of the invention.
Fig. 6 shows testing process overtime according to the stream time of illustrated embodiments of the invention.
Fig. 7 shows the schematic flow diagram according to the method for controlling security of illustrated embodiments of the invention.
Embodiment
Referring to accompanying drawing, example embodiment of the present invention is described in detail, the invention is not restricted to following example embodiment.Describe basic thought of the present invention for clear, only show in accompanying drawing and the closely-related parts of technical scheme of the present invention, function or step, and omitted specific descriptions to known technology, function, parts or step in following description.
The inventor has proposed and can by add the security control scheme based on flow detection to existing gas meter, flow meter, realize having the gas meter, flow meter of safety control function on the basis of the metering and billing gas meter, flow meter of existing routine.This gas meter, flow meter with safety control function can realize with the form of common gas meter, flow meter and install, and cost is low, easy popularization, can also detect in time, quickly and accurately the input of unusual condition and automatic self-closing gas, improved the combustion gas safety in utilization.
Fig. 1 is the schematic block diagram according to the gas meter, flow meter with safety control function of illustrated embodiments of the invention.Only show in figure and the closely-related part of technical scheme of the present invention, it will be appreciated by those skilled in the art that, except shown in part, this gas meter, flow meter can also comprise any suitable part (such as blast tube, communication interface etc.) or have any suitable structure.
As shown in Figure 1, gas meter, flow meter 10 comprises sensing unit 101, control module 102, safe unit 103 and interface unit 104.Control module 102 is connected with interface unit with sensing unit 101 and is connected, and can carry out two-way communication.Control module 102 also is connected to safe unit 103, to control the operation of safe unit 103.Although Fig. 1 shows safe unit 103 in gas meter, flow meter 10 inside, the invention is not restricted to this.Safe unit can be arranged on the outside of gas meter, flow meter 10, such as be arranged on gas pipeline, near position etc. gas meter, flow meter, control module 102 can send control commands to safe unit 103 by wired or wireless various ways.
In one example, the real-time traffic that control module 102 can detect sensing unit 101 is compared with default traffic threshold, and determines whether to occur unusual condition according to comparative result.The combined closely current behaviour in service of combustion gas of this security control that detects based on real-time traffic, and can be according to each user's practical application or demand (can be with minimum or minimum flow etc. such as the minimum of domestic gas table or maximum functional point, kitchen range), set traffic threshold personalizedly, can avoid error-detecting, realize that unusual condition detects fast and accurately.
In another example, control module 102 can also further contemplate time factor.For example, when the indication of flow comparative result may unusual condition occur, control module 102 can not enabled the security control measure immediately, but begins to monitor the duration of this unusual condition, for example monitors combustion gas with the duration of present flow rate or flow rate.When this duration surpassed the certain hour thresholding, control module 102 was just determined unusual condition to occur and is sent instruction and enable the security control measure.The security control of this further time-based factor allows to reserve certain nargin from the time, for example, in the situation that after gas leakage occurs, the user finds to leak and closed burnt gas valve immediately, can avoid unnecessary security control or warning,
It will be understood by those in the art that control module 102 can also carry out other several functions of gas meter, flow meter, such as metering, charging etc.For example, control module 102 can calculate by the flow to combustion gas on each sampling period, and then calculates integrated flow, completes the function of gas metering.Meanwhile, judge and analysis and evaluation based on the combustion gas real-time traffic, detect timely and control for the abnormal conditions that may occur.Control module 102 can any suitable form be realized, comprised hardware, software, firmware etc.For example, control module 102 can be implemented as special IC.Control module 102 also can be implemented as programming the programmable logic device (PLD) of corresponding software program, microcontroller, microprocessor etc.Control module 102 can also comprise storer, and for example random access memory ram, store relevant data.
Be discrete each other part although interface unit 104 and control module 102 have been shown in Fig. 1, it will be understood by those skilled in the art that these two unit or their partial function can realize integratedly.
The gas meter, flow meter 10 of Fig. 1 can also comprise other multiple parts, and for example communication unit, carry out wired or wireless communication with the outside, and the information such as metering, charging, unusual condition are sent to the outside.For example, communication unit can be made of communication modules such as WLAN or RS485, and when unusual condition occurring, control module 102 can send to error message such as telemanagement center or information concentrating equipment by communication unit.Can gather easily like this gas meter, flow meter and use information, in time notify failure condition, improve the efficient of management and security maintenance.In one example, gas meter, flow meter 10 can also have audio output device, and for example loudspeaker, can export the information such as metering, charging, unusual condition by audio output device, perhaps gives the alarm.
Fig. 2 shows a more detailed example of gas meter, flow meter 10, and in this example, gas meter, flow meter is the MEMS intelligent gas meter.Combustion gas runner, sensing unit, control module and Safety control valve have been encapsulated in table meter shell.In addition, the MEMS intelligent gas meter also comprises display screen, controls button and external communication interface.During gas meter, flow meter work, combustion gas is by the combustion gas runner, and sensing unit is exported instantaneous flow rate signal under the effect of gas flow rate, and control module flow to combustion gas on each sampling period calculates, and then calculates integrated flow, completes the function of gas metering.Simultaneously, judge and analysis and evaluation based on the state of gas flow, detect abnormal conditions and also carry out control measure timely.Can error message be shown and send by display screen and communication interface when unusual condition occurring, to notify user or managerial personnel.After the information that obtains the unusual condition appearance, user or managerial personnel can carry out safe handling to the scene.After confirming abnormal the releasing, recover the gas meter, flow meter normal operation by controlling the special key commands of key-press input.
Fig. 3 A and 3B show the schematic block diagram of control module 102 in the gas meter, flow meter 10 of the different example embodiment according to the present invention and 102 ', only show the part relevant with basic thought of the present invention in figure, and part identical in figure represents with identical Reference numeral.As shown in Figure 3A, control module 102 comprises flow comparer 301 and determiner 302.Input to flow comparer 301 from the real-time traffic Q of sensing unit 101 and default traffic threshold Qth, flow comparer 301 is compared real-time traffic Q with traffic threshold Qth, and exports comparative result Qcmp to determiner 302.Determiner 302 determines whether to occur unusual condition according to comparative result Qcmp, and blocks fuel gas flow to safe unit 103 output safety steering order Qff when determining unusual condition to occur.In the embodiment of Fig. 3 A, detect unusual condition and carry out security control based on real-time traffic.
Fig. 3 B illustrated embodiment further provides time margin.Control module 102 ' comprises flow comparer 301, timer 303, time comparer 304 and determiner 302 '.Input to flow comparer 301 from the real-time traffic Q of sensing unit 101 and default traffic threshold Qth, flow comparer 301 is compared real-time traffic Q with traffic threshold Qth, and exports comparative result Qcmp to timer 303.If unusual condition may appear in comparative result Qcmp indication, timer 303 begins the duration counting to real-time traffic Q, obtains count value T.Count value T and time threshold Tth input to time comparer 304, and time comparer 304 compares both, and output comparative result Tcmp.Determiner 302 ' determines whether to occur unusual condition according to comparative result Tcmp.For example, when comparative result Tcmp indication T 〉=Tth, determiner 302 ' determines to occur unusual condition, and blocks fuel gas flow to safe unit 103 output safety steering order Qff immediately.
Comprise a plurality of parts although Fig. 3 A and 3B show control module, it will be understood by those skilled in the art that the function of these parts or some of them function can be implemented as one.The various piece of control module can any suitable form realize, comprises hardware, software, firmware etc.For example, can be implemented as special IC, perhaps being embodied as programming has the programmable logic device (PLD) of corresponding software program, microcontroller, microprocessor etc.
Below in conjunction with Fig. 4-6, describe according to the gas meter, flow meter of illustrated embodiments of the invention detection and the security control process to several unusual conditions.
Use for gas safe, the present application people summarizes three kinds of unusual conditions:
The combustion gas micro-leakage, combustion gas in use because the gas leakage that the sealing problems such as interface, flexible pipe cause, this leakage is generally less than the required tolerance of minimum ignition of kitchen range, and often can not be detected by alarm, be one of potential safety hazard of family kitchen maximum;
The combustion gas tube bursting and leakage, when the flexible pipe of gas kitchen ranges access comes off because of certain reason, the combustion gas meeting directly sprays because of pipeline pressure, the flow that produce this moment is the safe handling scope of kitchen range head and shoulders above, and may cause explosion condition in moment, be one of modal security incident reason in the combustion gas use procedure; And
Stream time is overtime, in the gas meter, flow meter course of work, in case actual flow greater than 0, and this situation duration surpassed the single maximum time that resident's combustion gas is used, think that continuous working is overtime, certain may occur and continue the runaway condition that leaks.
According to illustrated embodiments of the invention, during any in described unusual condition determine occurring, all enable safety precautions.Only when any unusual condition not detected, determine that just gas meter, flow meter is in normal operating conditions, thereby guarantee the safe handling of combustion gas.
Above three kinds of unusual conditions only use as example for the embodiment of the present invention is described, the invention is not restricted to this.It will be understood by those skilled in the art that to define multiple other unusual conditions, and can be applied to other the multiple unusual conditions that can find by flow monitoring according to the gas meter, flow meter of illustrated embodiments of the invention and method.
Fig. 4 shows the micro-leakage testing process according to the gas meter, flow meter of illustrated embodiments of the invention.When fuel gas flow or gas meter, flow meter start operation was arranged in gas meter, flow meter, flow process 400 beginnings were in step 402, with the clocking value T zero clearing in timer.Can also set first flow thresholding Q1 (that is, micro-leakage traffic threshold) and very first time thresholding T1 in step 402.Can use minimum flow based on the minimum working point of gas meter, flow meter user's gas meter, flow meter and kitchen range, and reserve certain nargin, define first flow thresholding Q1 and very first time thresholding T1.For example, for Q1, can choose minimum flow and the value that is not more than gas meter, flow meter rated flow lower limit, for example a Q1=0.01m that can light a fire less than kitchen range
3/ h.For T1, can consider user's kitchen environment, for example choose a micro-leakage and may cause kitchen fuel gas concentration near the value of lower explosive limit, for example T1=10 minute.Certainly, Q1 and T1 can be also predefined by interface unit or control module.In step 404, sensing unit detects the real-time traffic Q of combustion gas.In step 406, the flow comparer is Q and Q1 relatively.If 0＜Q≤Q1, flow process 400 advances to step 408, and timer increases progressively clocking value T.In step 410, the time comparer is T and T1 relatively.If T 〉=T1, flow process 400 advances to step 412, and determiner determines to occur micro-leakage.
If obtain Q＞Q1 in step 406, gas meter, flow meter can withdraw from micro-leakage testing process 400, enters normal operating conditions or enters other unusual condition testing processes.
If obtain T＜T1 in step 410, flow process 400 turns back to step 404 and repeats step afterwards.
Alternatively, after step 406 obtained 0＜Q≤Q1, flow process 400 can directly advance to step 412, and determiner determines to occur micro-leakage.
Certainly, when determiner is determined micro-leakage to occur, send instruction to safe unit immediately and come control example such as safety-valve to close.Alternatively, can also by output error message codes such as display screen and communication interfaces, notify user or managerial personnel to carry out site safety and safeguard.
Fig. 5 shows the tube bursting and leakage testing process according to the gas meter, flow meter of illustrated embodiments of the invention.When fuel gas flow or gas meter, flow meter start operation was arranged in gas meter, flow meter, flow process 500 beginnings were in step 502, with the clocking value T zero clearing in timer.Can also set the second traffic threshold Q2 (that is, tube bursting and leakage traffic threshold) and the second time threshold T2 in step 502.Can use maximum flow based on gas meter, flow meter user's gas meter, flow meter maximum functional point and kitchen range, and reserve certain nargin, define the second traffic threshold Q2 and the second time threshold T2.For example, Q2 can choose the peak flow values when in user family, all kitchen range are worked simultaneously.As a concrete example, for the user who there is no heating stove, the maximum functional flow in the time of can adding that 1 hot-water bottle is worked simultaneously according to two kitchen range is estimated Q2, for example Q2=5m
3/ h, the user for using heating stove can set Q2=7m
3/ h.For T2, can consider user's kitchen environment, for example choose a tube bursting and leakage and may cause kitchen fuel gas concentration near the value of lower explosive limit, for example T2=10 second.Alternatively, consider emergency and the harmfulness of tube bursting and leakage, T2 can be set as 0.Certainly, Q2 and T2 can be also predefined by interface unit or control module.In step 504, sensing unit detects the real-time traffic Q of combustion gas.In step 506, the flow comparer is Q and Q2 relatively.If Q 〉=Q2, flow process 500 advances to step 508, and timer increases progressively clocking value T.In step 510, the time comparer is T and T2 relatively.If T 〉=T2, flow process 500 advances to step 512, and determiner determines to occur tube bursting and leakage.
If obtain Q＜Q2 in step 506, gas meter, flow meter can withdraw from tube bursting and leakage testing process 500, enters normal operating conditions or enters other unusual condition testing processes.
If obtain T＜T2 in step 510, flow process 500 turns back to step 504 and repeats step afterwards.
Alternatively, if obtain Q 〉=Q2 in step 506, flow process 500 can directly advance to step 512, and determiner determines to occur tube bursting and leakage.
Certainly, when determiner is determined tube bursting and leakage to occur, send instruction to safe unit immediately and come control example such as safety-valve to close.Alternatively, can also by output error message codes such as display screen and communication interfaces, notify user or managerial personnel to carry out site safety and safeguard.
Fig. 6 shows testing process overtime according to the stream time of the gas meter, flow meter of illustrated embodiments of the invention.When fuel gas flow or gas meter, flow meter start operation was arranged in gas meter, flow meter, flow process 600 beginnings were in step 602, with the clocking value T zero clearing in timer.Can also set the first and second traffic threshold Q1 and Q2 and the 3rd time threshold T3 in step 602.Can be based on gas meter, flow meter user's the longest service time of single, and reserve certain nargin, definition the 3rd time threshold T3 is the upper limit of stream time.T3 can be accustomed to according to user's culinary art, has a bath, the single maximum operating time of heating determines, it is enough in general being set to 2～4 hours, if the user has specific demand, for example simmers for a long time soup, can extend to 6～8 hours.The user can be by gas meter, flow meter interface unit or control module, according to different demand adaptations T3 is set.Q1, Q2 can be also predefined by interface unit or control module.In step 604, sensing unit detects the real-time traffic Q of combustion gas.In step 606, the flow comparer is Q and Q1 and Q2 relatively.If Q1＜Q＜Q2, flow process 600 advances to step 608, and timer increases progressively clocking value T.In step 610, the time comparer is T and T3 relatively.If T 〉=T3, flow process 600 advances to step 612, and it is overtime that determiner determines stream time to occur.
If obtain Q not in greater than Q1 and the scope less than Q2 in step 606, gas meter, flow meter can withdraw from flow process 600, enters other unusual condition testing processes.For example, when 0＜Q≤Q1, enter micro-leakage testing process 400, and when Q 〉=Q2, enter tube bursting and leakage testing process 500.
If obtain T＜T3 in step 610, flow process 600 turns back to step 604 and repeats step afterwards.
Certainly, determine that at determiner stream time is overtime, send instruction to safe unit immediately and come control example such as safety-valve to close.Alternatively, can also by output error message codes such as display screen and communication interfaces, notify user or managerial personnel to carry out site safety and safeguard.
More than described according to the gas meter, flow meter of the illustrated embodiments of the invention testing process to three kinds of example unusual conditions.Can find out, in each testing process, the gas meter, flow meter of illustrated embodiments of the invention is followed the tracks of and is detected real-time traffic, monitors and controls based on real-time traffic.These flow processs can periodically be carried out, and for example take sample detecting cycle of real-time traffic Q as the interval, carry out above-mentioned flow process.Preferably, T1, T2 and T3 are set to T3＞T1＞T2, and T2 can be set as 0.Because gas meter, flow meter is installed from house to house, so the setting of these parameters can carry out personalization and set such as according to each user's combustion gas use amount, service time etc., is conducive to further improve validity and the accuracy of security control.
In addition, it will be understood by those skilled in the art that above-mentioned three kinds of unusual conditions detect and can carry out respectively, also can adopt any array mode to carry out.The method flow of the illustrated embodiments of the invention that combine above-mentioned three kinds of unusual conditions detection is described below with reference to Fig. 7.
Fig. 7 shows the schematic flow diagram according to the method for controlling security of illustrated embodiments of the invention.When fuel gas flow or gas meter, flow meter start operation was arranged in gas meter, flow meter, flow process 700 beginnings in step 702, were set the first and second traffic threshold Q1 and Q2 and first, second, and third time threshold T1, T2 and T3.Can set as described above these parameters.Certainly, these parameters can be also predefined by interface unit or control module, in this case, omit step 702.In step 704, sensing unit detects the real-time traffic Q of combustion gas.In step 706, the flow comparer is Q and Q1 relatively.If 0＜Q≤Q1, flow process 700 advances to step 708, enters micro-leakage testing process (as Fig. 4), and checks and whether determined to exist micro-leakage.If there is micro-leakage, flow process 700 advances to step 710, enables safety precautions.
If in step 706, Q＞Q1, flow process 700 advances to step 712, and the flow comparer is Q and Q2 relatively.If Q 〉=Q2, flow process 700 advances to 714, enters tube bursting and leakage testing process (as Fig. 5), and checks and whether determined to exist tube bursting and leakage.If there is tube bursting and leakage, flow process 700 advances to step 710, enables safety precautions.
If in step 712, Q＜Q2, flow process 700 advances to 716, enters the overtime testing process of stream time (as Fig. 6), and check whether determined to exist overtime.If exist overtimely, flow process 700 advances to step 710, enables safety precautions.
If be not have any leakage or overtime in step 708,714 and 716 the result of checking, flow process 700 turns back to step 704, and the step after repeating.
The gas meter, flow meter with safety control function and method of controlling security thereof according to illustrated embodiments of the invention have more than been described, this is based on the security control of flow detection, the combine closely behaviour in service of combustion gas, and consider certain hour nargin, adapt to different working environments by parameterized setting, can be subject to hardly the impact of kitchen working environment.In addition, avoid as far as possible the mistake alarm and affect resident's normal use, improve user's experience, and then improve the universal enforcement of this function, further improved the security that combustion gas is used simultaneously.
The above is example embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (18)
1. gas meter, flow meter with safety control function comprises:
Sensing unit is for detection of the flow of the combustion gas of the gas meter, flow meter of flowing through;
Control module is used for being connected to sensing unit and is positioned at gas meter, flow meter inside or outside safe unit, based on the testing result of sensing unit, determines whether to occur unusual condition, and controls safe unit and enable safety precautions when determining unusual condition to occur.
2. gas meter, flow meter according to claim 1, wherein, safe unit comprises safety-valve, safety precautions comprises that the closed safe valve is with the blocking-up fuel gas flow.
3. gas meter, flow meter according to claim 2, wherein, safety precautions also comprises as lower at least a:
If gas meter, flow meter has display screen, in the demonstration screen display unusual condition information of gas meter, flow meter;
If gas meter, flow meter has audio output device, give the alarm by audio output device; And
If gas meter, flow meter has communication unit, send the unusual condition code to the telemanagement center by communication unit.
4. gas meter, flow meter according to claim 1, wherein, unusual condition comprises as lower at least a:
The combustion gas micro-leakage;
The combustion gas tube bursting and leakage; And
Stream time is overtime;
Wherein, during any in described unusual condition determine occurring, control module is all controlled safe unit and is enabled safety precautions.
5. gas meter, flow meter according to claim 1, wherein, sensing unit comprises the MEMS sensing element, for detection of the real-time traffic of combustion gas.
6. gas meter, flow meter according to claim 1 also comprises: interface unit, be connected with control module, and carry out user interactions by interface unit.
7. gas meter, flow meter according to claim 1, wherein, control module comprises:
The flow comparer is compared the real-time traffic that detects with the preset flow thresholding; And
Determiner based on the flow comparative result, determines whether to occur unusual condition.
8. gas meter, flow meter according to claim 1, wherein, control module also determines whether to occur unusual condition based on combustion gas with duration of the traffic flow that detects.
9. gas meter, flow meter according to claim 8, wherein, control module comprises:
The flow comparer is compared the real-time traffic that detects with the preset flow thresholding;
Timer when the indication of flow comparative result may unusual condition occur, is counted with the duration that real-time traffic flows combustion gas, obtains clocking value;
The time comparer is compared clocking value with the Preset Time thresholding;
Determiner, time-based result relatively determines whether to occur unusual condition.
10. gas meter, flow meter according to claim 9, wherein,
When clocking value during less than the Preset Time thresholding, periodically:
Sensing unit detects the real-time traffic of combustion gas;
The flow comparer is compared the real-time traffic that detects with the preset flow thresholding;
When the indication of flow comparative result may unusual condition occur, timer increased progressively clocking value, and the clocking value after the time comparer will increase progressively is compared with the Preset Time thresholding;
When clocking value is equal to or greater than the Preset Time thresholding:
Determiner determines to occur unusual condition.
11. a gas meter, flow meter method of controlling security comprises:
The flow through flow of combustion gas of gas meter, flow meter of detection;
Based on testing result, determine whether to occur unusual condition, and enable safety precautions when determining unusual condition to occur.
12. method according to claim 11 wherein, is enabled safety precautions and is comprised: close and be positioned at the inner or outside safety-valve of gas meter, flow meter with the blocking-up fuel gas flow.
13. method according to claim 11, wherein, unusual condition comprises as lower at least a:
The combustion gas micro-leakage;
The combustion gas tube bursting and leakage; And
Stream time is overtime;
Wherein, during any in described unusual condition determine occurring, all enable safety precautions.
14. method according to claim 11, wherein, determining step comprises:
The real-time traffic that detects is compared with the preset flow thresholding; And
Based on the flow comparative result, determine whether to occur unusual condition.
15. method according to claim 11, wherein, determining step is also based on the duration of combustion gas with the traffic flow that detects.
16. method according to claim 15, wherein, determining step comprises:
The real-time traffic that detects is compared with the preset flow thresholding;
When the indication of flow comparative result may unusual condition occur, combustion gas was counted with the duration that real-time traffic flows, and the clocking value that obtains is compared with the Preset Time thresholding;
Time-based result relatively determines whether to occur unusual condition.
17. method according to claim 16, wherein, time-based result relatively determines whether that the step that unusual condition occurs comprises:
During less than the Preset Time thresholding, periodically carry out following steps when clocking value:
Detect the real-time traffic of combustion gas;
The real-time traffic that detects is compared with the preset flow thresholding;
When the indication of flow comparative result may unusual condition occur, clocking value is increased progressively, and the clocking value after increasing progressively is compared with the Preset Time thresholding;
When clocking value is equal to or greater than the Preset Time thresholding:
Determine to occur unusual condition.
18. method according to claim 11, wherein, safety precautions also comprises as lower at least a:
Show unusual condition information;
Send the unusual condition alarm; And
To telemanagement center transmission unusual condition code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110376294.4A CN103134561B (en) | 2011-11-23 | 2011-11-23 | Gas meter, flow meter and method of controlling security with safety control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110376294.4A CN103134561B (en) | 2011-11-23 | 2011-11-23 | Gas meter, flow meter and method of controlling security with safety control function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103134561A true CN103134561A (en) | 2013-06-05 |
| CN103134561B CN103134561B (en) | 2017-09-22 |
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| CN201110376294.4A Active CN103134561B (en) | 2011-11-23 | 2011-11-23 | Gas meter, flow meter and method of controlling security with safety control function |
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Cited By (10)
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| CN104482979A (en) * | 2014-12-12 | 2015-04-01 | 重庆市山城燃气设备有限公司 | Flow monitoring intelligent gas meter |
| CN104655218A (en) * | 2015-02-03 | 2015-05-27 | 成都秦川科技发展有限公司 | Safety cut-out type intelligent gas meter with self learning function |
| CN105185051A (en) * | 2015-07-31 | 2015-12-23 | 常州维格电子有限公司 | Method and system of detection for discovering suspected gas leakage based on abnormal behavior of gas use |
| CN106527327A (en) * | 2017-01-10 | 2017-03-22 | 清华大学 | Civil gas safety monitoring method |
| CN108072415A (en) * | 2016-11-09 | 2018-05-25 | 谷泽竑 | A kind of gas safe intelligent control method and system based on mobile terminal and gas metering |
| CN108420322A (en) * | 2018-05-22 | 2018-08-21 | 广东美的厨房电器制造有限公司 | The control method and cooking equipment of cooking equipment |
| CN109595464A (en) * | 2017-10-03 | 2019-04-09 | 香港中华煤气有限公司 | Gas leakage detection system |
| CN110808630A (en) * | 2019-10-16 | 2020-02-18 | 金卡智能集团股份有限公司 | Gas meter communicating according to power supply condition and remote communication method thereof |
| CN111179509A (en) * | 2020-01-03 | 2020-05-19 | 广州燃气集团有限公司 | Energy-saving gas meter and implementation method and system thereof |
| CN114673932A (en) * | 2022-04-07 | 2022-06-28 | 威海同天信息科技有限公司 | Method for guaranteeing gas safety by setting flow forbidden interval |
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| CN115512520B (en) | 2022-11-21 | 2023-04-07 | 成都秦川物联网科技股份有限公司 | Gas use safety early warning method based on intelligent gas and Internet of things system |
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| CN104482979A (en) * | 2014-12-12 | 2015-04-01 | 重庆市山城燃气设备有限公司 | Flow monitoring intelligent gas meter |
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| CN104655218A (en) * | 2015-02-03 | 2015-05-27 | 成都秦川科技发展有限公司 | Safety cut-out type intelligent gas meter with self learning function |
| CN105185051A (en) * | 2015-07-31 | 2015-12-23 | 常州维格电子有限公司 | Method and system of detection for discovering suspected gas leakage based on abnormal behavior of gas use |
| CN108072415A (en) * | 2016-11-09 | 2018-05-25 | 谷泽竑 | A kind of gas safe intelligent control method and system based on mobile terminal and gas metering |
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| CN109595464A (en) * | 2017-10-03 | 2019-04-09 | 香港中华煤气有限公司 | Gas leakage detection system |
| CN108420322A (en) * | 2018-05-22 | 2018-08-21 | 广东美的厨房电器制造有限公司 | The control method and cooking equipment of cooking equipment |
| CN110808630A (en) * | 2019-10-16 | 2020-02-18 | 金卡智能集团股份有限公司 | Gas meter communicating according to power supply condition and remote communication method thereof |
| CN111179509A (en) * | 2020-01-03 | 2020-05-19 | 广州燃气集团有限公司 | Energy-saving gas meter and implementation method and system thereof |
| CN114673932A (en) * | 2022-04-07 | 2022-06-28 | 威海同天信息科技有限公司 | Method for guaranteeing gas safety by setting flow forbidden interval |
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