CN1303404C - Gas breaker - Google Patents
Gas breaker Download PDFInfo
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- CN1303404C CN1303404C CNB2004100979761A CN200410097976A CN1303404C CN 1303404 C CN1303404 C CN 1303404C CN B2004100979761 A CNB2004100979761 A CN B2004100979761A CN 200410097976 A CN200410097976 A CN 200410097976A CN 1303404 C CN1303404 C CN 1303404C
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- 230000001186 cumulative effect Effects 0.000 claims abstract description 28
- 238000004364 calculation method Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 48
- 238000011144 upstream manufacturing Methods 0.000 description 30
- 230000002159 abnormal effect Effects 0.000 description 21
- 239000000567 combustion gas Substances 0.000 description 13
- 239000000654 additive Substances 0.000 description 7
- 230000000996 additive effect Effects 0.000 description 7
- 239000003915 liquefied petroleum gas Substances 0.000 description 7
- 238000012384 transportation and delivery Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000002604 ultrasonography Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000007115 recruitment Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/001—Means for regulating or setting the meter for a predetermined quantity
- G01F15/002—Means for regulating or setting the meter for a predetermined quantity for gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Details Of Flowmeters (AREA)
Abstract
本发明提供一种能够进行与器具流量相适应的累计运算及结果显示的燃气断路装置。在本发明的燃气断路装置中，由流量计算装置(20)进行流量换算，累计补正装置(21)对流量计算装置(20)的流量值为正流量还是为负流量进行判断，并进行累计补正，直至累计到规定的量值。累计补正装置(21)输出规定的累计值时，相加累计值计算装置(22)从上述的规定累计值和流量计算装置(20)中求出的流量值计算出单位累计量的累计周期，并每隔规定的时间输出单位累计量。当相加累计值计算装置(22)每隔规定的时间输出单位累计量时，累计装置(23)将单位累计量进行相加。
The present invention provides a gas circuit breaker capable of performing cumulative calculations and result display compatible with the flow rate of appliances. In the gas circuit breaking device of the present invention, the flow calculation device (20) performs flow conversion, and the cumulative correction device (21) judges whether the flow value of the flow calculation device (20) is a positive flow or a negative flow, and performs cumulative correction. , until the specified value is accumulated. When the cumulative correction device (21) outputs a prescribed cumulative value, the summed cumulative value calculation device (22) calculates the cumulative period of the unit cumulative amount from the above-mentioned specified cumulative value and the flow value obtained by the flow calculation device (20), And output the cumulative amount of the unit every specified time. The integrating means (23) adds up the unit cumulative amounts when the cumulative addition value calculation means (22) outputs the unit cumulative amounts at predetermined time intervals.
Description
Technical field
The present invention relates to a kind of gas breaker, the flow velocity of various combustion gas such as the town gas that this gas breaker uses ultrasound wave to detect to flow in pipeline, liquefied petroleum gas (LPG) monitors whether safety of its user mode according to the change in flow of these combustion gas again.
Background technology
The structure of existing this gas breaker is (example wherein can be opened flat 9-21667 communique with reference to the Japanese patent gazette spy) shown in the block scheme among Fig. 3.
Among Fig. 3,1 is stream, and 2 is the upstream side oscillator, is arranged on upstream one side of stream 1, is used for sending, receiving ultrasound wave.3 is the downstream oscillator, with upstream side oscillator 2 subtends be arranged on downstream one side of stream 1, also be used for sending, receiving ultrasound wave.4 is transtation mission circuit, is used for side oscillator 2 transmission ultrasonic signals upstream, and 5 is amplifying circuit, is used to amplify the signal that is received by downstream oscillator 3.6 is comparator circuit, is used for signal and reference signal after amplifying are compared.7 is time set, is used for coming the instrumentation ultrasound wave from sending to the time of reception by timer conter.Frame of broken lines 8 is a measurement system, and this system comprises from transtation mission circuit 4 to time set each device of 7.9 is flow computing device, according to time set 7 ultrasonic propagation time, and obtain flow value with reference to sectional area size, the flow state of pipeline.10 is the cyclomorphosis device, and the value that is used for calculating according to flow computing device 9 changes the mensuration cycle.11 is the instrumentation starting device, is used for sending to transtation mission circuit 4 according to the value adjustment of cyclomorphosis device 10 moment of signal.12 are that instrumentation finishes device, the state the when calculating that is used to detect flow computing device 9 finishes.13 is voltage-operated device, is used for finishing the expression that device 12 sends with instrumentation and calculates the voltage that the signal Synchronization ground that finishes reduces measuring circuit 8, and begin to carry out the voltage that the instrumentation operation synchronously recovers measuring circuit 8 with instrumentation starting device 11.
The following describes the operational circumstances in the existing apparatus with said structure.At first, send the intermittent pulse signal by instrumentation starting device 11 by transtation mission circuit 4, the stream of being crossed to medium gas-flows such as town gas, liquefied petroleum gas (LPG) are arranged by upstream side oscillator 21 sends ultrasonic signal, these ultrasonic signals are propagated in the fluid of stream 1, received by downstream oscillator 3 then, carry out signal Processing by amplifying circuit 5 and comparator circuit 6 again, determine from sending to the time of reception by time set 7.When flow is big, need add the fast timing sample rate to reduce error; And when less or flow is zero, also produce error hardly even reduce the instrumentation sample rate when flow.Therefore, can change interval between the instrumentation operation according to the value of flow computing device 9.When the value of flow computing device 9 hour, cyclomorphosis device 10 strengthens the time interval between the instrumentations operation; And the value of flow computing device 9 then reduces the time interval between the instrumentation operation when becoming big.In addition, the voltage of measuring circuit 8 also is lowered between two instrumentation operations.During the flow measurement EO that carries out in flow computing device 9, instrumentation finishes device 12 and sends signal, makes voltage-operated device 13 reduce voltages or make the voltage vanishing.In contrast, before instrumentation starting device 11 begins to carry out the instrumentation operation, make the voltage of measuring circuit 8 return to original value by voltage-operated device 13.
But, the problem below in above-mentioned existing apparatus, existing.Though can measure flow in the stream 1 by upstream side oscillator 2 and downstream oscillator 3, to use at upstream side under the occasion that makes the utensil that pressure changes easily, the velocity flow profile in the stream 1 will not have under the occasion of variation different with pressure.Particularly under the occasion of the Gas appliance that uses low discharge such as gas-cooker, the velocity flow profile instability; When pressure alters a great deal, also might detect negative moment flow for the moment.In addition, be at utensil under the occasion of halted state, detected flow also might negative moment flow occur because of pressure changes.Accumulative total decision method under this occasion did not disclose so far.
Summary of the invention
The present invention is intended to solve the problems referred to above that exist in the existing equipment, its purpose is to provide a kind of like this gas breaker, even the use traffic that is utensil changes, and no matter whether Gas appliance uses, and above-mentioned gas breaker can be correctly, accurately the combustion gas use amount is added up.
In order to solve the aforementioned problems in the prior, in gas breaker of the present invention, carry out flow rate conversion by flow computing device, the accumulative total compensating device is that positive flow is still judged for minus flow to the flow value of flow computing device, and add up revisal, until the value that is accumulated to regulation.When the accumulative total compensating device was exported the aggregate-value of regulation, the flow value that addition aggregate-value calculation element is obtained from above-mentioned regulation aggregate-value and flow computing device calculated the accumulative total cycle of departmental summary amount, and every official hour output unit cumulative amount.When addition aggregate-value calculation element during every official hour output unit cumulative amount, integrating device carries out addition with the departmental summary amount.
Like this, even on upstream side connects, make utensil that pressure changes easily, the words of low discharge utensil such as gas-cooker, fan-type combustion heater and big flow utensil such as gas-fired heat pump, water heater on the downstream connects, when adding up, detected instantaneous delivery value judgement is carried out addition accumulative total or is offset processing by subtraction according to the accumulative total compensating device.When being accumulated to the aggregate-value of regulation, the flow of obtaining in each section and flow detector is in the corresponding time, and the departmental summary amount is output in the integrating device.Like this, when aggregate-value will increase accordingly with the use amount of utensil, particularly demonstrating under the occasion of aggregate-value the words that the use amount of aggregate-value and utensil increases accordingly by display device, its variable condition can be consistent with actual operating position, thereby can carry out correct demonstration.Therefore, even aggregate-value can be obtained and demonstrate to the utensil that flow velocity changes or use traffic is different also correctly, accurately.
Technique effect of the present invention is as follows.Adopt the words of gas breaker of the present invention, even on upstream side connects, make utensil that pressure changes easily, the words of low discharge utensil such as gas-cooker, fan-type combustion heater and big flow utensil such as gas-fired heat pump, water heater on the downstream connects, when adding up, detected instantaneous delivery value judgement is carried out addition accumulative total or is carried out addition and regulate according to the accumulative total compensating device.When being accumulated to the aggregate-value of regulation, every section with flow detector in the flow obtained in the corresponding time, the departmental summary amount is output in the integrating device.Like this, when aggregate-value will increase accordingly with the use amount of utensil, particularly demonstrating under the occasion of aggregate-value the words that the use amount of aggregate-value and utensil increases accordingly by display device, its variable condition can be consistent with actual operating position, thereby can carry out correct demonstration.Therefore, the utensil that even flow velocity changes or use traffic is different, the display speed situation not corresponding with the use amount of utensil can not take place yet, in the Gas appliance use, can obtain and demonstrate aggregate-value correctly, accurately, have the effect of the reliability that greatly improves display message etc.
Specific embodiments of the present invention is as follows.Gas breaker in the 1st scheme comprises: the signal propagation time in the instrumentation medium and then detect the flow monitor of flow velocity; Converse the flow computing device of flow from the detected flow velocity of described flow monitor; The flow value of described flow computing device is added up the accumulative total compensating device of revisal; When reaching the aggregate-value of regulation in the described accumulative total compensating device, the flow value of obtaining from described regulation aggregate-value and described flow computing device is obtained the accumulative total cycle of departmental summary amount, again the addition aggregate-value calculation element of output unit cumulative amount in each described accumulative total cycle; The integrating device that the departmental summary amount of described addition aggregate-value calculation element output is carried out addition; And the display device that demonstrates information such as aggregate-value.
Like this, connect low discharge utensil such as gas-cooker, fan-type combustion heater and gas-fired heat pump, water heater etc. greatly under the occasion of flow utensil even connect utensils such as gas heat pump type air conditioner, the downstream cause pressure easily and to change, can obtain the use flow velocity of utensil and be converted into flow by flow monitor at the upstream side that gas breaker is provided with the position.Though because factor instantaneous delivery such as pressure variation can change, detected flow have just have negative, but, be to bear just to judge at first among the present invention to detected flow, offset totally according to positive negative value by the accumulative total compensating device, when being accumulated to ormal weight, promptly output in the addition aggregate-value calculation element; Then, obtain cycle of regulation flow that is specific discharge, in integrating device, specific discharge is added up termly again from current utensil use traffic.Like this, just can correctly add up with recruitment and show with the corresponding aggregate-value of use traffic of utensil, the situation that demonstration situation that can not occur irrespectively adding up with constant amount with the utensil flow or show, accumulate and actual state are not inconsistent, thus can carry out correct demonstration.
Gas breaker in the 2nd scheme is characterized in that comprising: the signal propagation time in the instrumentation medium and then detect the flow monitor of flow velocity; Converse the flow computing device of flow from the detected flow velocity of described flow monitor; The flow value of described flow computing device is added up the accumulative total compensating device of revisal; When reaching the aggregate-value of regulation in the described accumulative total compensating device, the flow value of obtaining from described regulation aggregate-value and described flow computing device is obtained the accumulative total cycle of departmental summary amount, again the addition aggregate-value calculation element of output unit cumulative amount in each described accumulative total cycle; Under the occasion of accumulative total cycle less than the stipulated time of the departmental summary amount of in described additive quantity integrating device, obtaining, with the additive quantity restraint device exported of cycle of regulation; The integrating device that the departmental summary amount of described additive quantity restraint device output is carried out addition; With the display device that demonstrates information such as aggregate-value.
Like this, connect low discharge utensil such as gas-cooker, fan-type combustion heater and gas-fired heat pump, water heater etc. greatly under the occasion of flow utensil even connect utensils such as gas heat pump type air conditioner, the downstream cause pressure easily and to change, can obtain the use flow velocity of utensil and be converted into flow by flow monitor at the upstream side that gas breaker is provided with the position.Though because factor instantaneous delivery such as pressure variation can change, detected flow have just have negative, but, be to bear just to judge at first among the present invention to detected flow, offset totally according to positive negative value by the accumulative total compensating device, when being accumulated to ormal weight, promptly output in the addition aggregate-value calculation element; Then, obtain cycle of regulation flow that is specific discharge, in integrating device, specific discharge is added up termly again from current utensil use traffic.In addition, the cycle of obtaining short under the situation in the cards hardly, the cycle limit of carrying out addition in the integrating device is become certain cycle, thus can be to carry out correct accumulative total and demonstration with the corresponding aggregate-value recruitment of the normal use traffic of utensil; Take place under the unusual situation at the flow that flows through, owing to be to add up every the regular hour, therefore the accumulative total operation can be carried out certainly, the situation that demonstration situation that can not occur irrespectively adding up with constant amount with the utensil flow or show, accumulate and actual state are not inconsistent, thus can carry out correct demonstration.
The 3rd scheme of the present invention is a kind of computer program, it is characterized in that: this program can make all or part of functions of the gas breaker described in computer realization claim 1 or 2.By such program, can use multi-purpose computer or server etc. to be easy to realize the part or all of function of gas breaker of the present invention.In addition, by program being recorded in the recording medium or using communication line to carry out program and download, the granting of program and installation exercise just can be carried out very simply.
Description of drawings
Fig. 1 is the controlling party block diagram of the gas breaker of embodiments of the invention 1,
Fig. 2 is the controlling party block diagram of the gas breaker of embodiments of the invention 2,
Fig. 3 is the controlling party block diagram of existing gas breaker.
In the above-mentioned accompanying drawing, 14 is the flow rate detection system, and 20 is flow computing device, and 21 is the cumulative amount compensating device, 22 are addition aggregate-value calculation element, and 23 is integrating device, and 24 is display device, 25 is the abnormal conditions judgment means, and 26 is tripper, and 27 is the additive quantity restraint device.
Embodiment
Explain the 1st, the 2nd embodiment of the present invention below with reference to Fig. 1, Fig. 2.In Fig. 1, Fig. 2, put on identical sequence number with the inscape that has identical function among Fig. 3.In addition, it is pointed out that such embodiment does not have the qualification effect to the present invention.
(embodiment 1)
Fig. 1 is the block scheme of the gas breaker of the 1st embodiment of the present invention.Wherein, 14 is the flow rate detection system, in the stream 1 of combustion gas medium such as liquefied petroleum gas (LPG), be provided with upstream side oscillator 2 and downstream oscillator 3 relative to each other, send ultrasonic signal to another, detect the flow velocity of the combustion gas the use again from travel-time of ultrasonic signal from one of them.As a kind of example of flow rate detection system 14, can adopt in the following method, that is flow rate detection system 14 can comprise: switching device shifter 15, dispensing device 16, receiving trap 17, duplicating device 18 and travel-time measuring device 19.Dispensing device 16 is connected with switching device shifter 15 with receiving trap 17, and switching device shifter 15 at first makes dispensing device 16 and upstream side oscillator 2 be connected, make receiving trap 17 to be connected with downstream oscillator 3; Then, make dispensing device 16 and downstream oscillator 3 be connected, make receiving trap 17 to be connected, that is to say, alternatively switch the connecting object of dispensing device 16 and receiving trap 17 with upstream side oscillator 2.When switching device shifter 15 makes dispensing device 16 link to each other with upstream side oscillator 2 and receiving trap 17 is linked to each other with downstream oscillator 3, the ultrasonic signal that sends from dispensing device 16 is emitted by upstream side oscillator 2, after in stream 1, propagating, received by receiving trap 17 through downstream oscillator 3.Duplicating device 18 makes the transmission of ultrasonic signal and receives and carries out repeatedly, and makes also instrumentation signal propagation time therebetween repeatedly of travel-time measuring device 19.19 pairs of ultrasonic signals of travel-time measuring device carry out instrumentation from the time that sends to reception, and accumulate.Then, switching device shifter 15 makes dispensing device 16 and downstream oscillator 3 link to each other, make receiving trap 17 to be connected with upstream side oscillator 2, repeats above-mentioned operation.Travel-time measuring device 19 according to the travel-time that receives at first/obtain and afterwards after switching device shifter 15 switches instrumentation to signal propagation time obtain difference between the travel-time.
20 is flow computing device, is used for obtaining flow velocity according to the travel-time of obtaining, and is converted into flow value again.21 for the accumulative total compensating device, be used for add up every the flow value that official hour is obtained flow computing device 20, the instantaneous delivery of obtaining be on the occasion of occasion under carry out additive operation, for carrying out subtraction under the occasion of minus flow, offset processing.Like this, use gas-fired heat pump (english abbreviation: GHP) wait under the occasion of the utensil that causes that easily pressure changes at upstream side particularly, when the gas breaker in downstream with the utensil in downstream cut off, when making it obsolete, even detect utensil as at the flow value that uses or when detecting minus flow, can prevent that also aggregate-value from increasing mistakenly.
22 are addition aggregate-value calculation element, the flow that is used for accumulative total compensating device 21 being obtained on one side carries out above-mentioned counteracting to be handled, when reaching ormal weight, add up on one side as aggregate-value, but when direct addition, might produce display digit in (particularly) accumulative total displayed value occur discontinuous, do not increase progressively problem such as demonstration.For this reason, when accumulative total is accumulated to ormal weight in the compensating device 21, obtain addition cycle of each departmental summary value, output unit cumulative amount when each addition end cycle again according to the instantaneous delivery of this moment; When the departmental summary amount reaches the number of times of regulation, also just become the flow value of regulation.23 is integrating device, in the addition cycle that each addition aggregate-value calculation element 22 is obtained the departmental summary amount of output is carried out sum operation.24 is display device, is used to demonstrate the results such as aggregate-value that integrating device 23 accumulative totals go out.
25 is the abnormal conditions judgment means, store the information such as judgement time that the flow value under the abnormal conditions such as flexible pipe comes off arranged and be used to discern the normal service time of Gas appliance in this device, wherein, cut apart for the flow territory that set gas breaker allows to use, and in each flow territory, configure corresponding service time with respect to various Gas appliances.Abnormal conditions decision content when abnormal conditions judgment means 25 is used the flow value of obtaining in the flow computing device 20 with the Gas appliance that configures compares, thereby judges whether user mode occurs unusually.For example, when connection flexible pipe of utensils such as gas heater etc. comes off, flow will occur unusually.Abnormal conditions judgment means 25 just can judge abnormal conditions whether occurred after the flow value obtained and abnormal conditions decision content are compared.In addition, also the table that opens circuit service time can be stored in abnormal conditions judgment means 25, binding hours to making service time under the occasion of the maximum service time when substantially exceeding normal the use service time of having stipulated utensils such as gas heater in this table.The flow value that 25 pairs of flow computing devices 20 of abnormal conditions judgment means are obtained monitors.
26 is tripper, is used for determining unusual time output chopping signal in abnormal conditions judgment means 25, and stream 1 is cut off.When abnormal conditions judgment means 25 judges that thereby the user mode of combustion gas occurs driving tripper 26 unusually, can also demonstrate off state and fault content by the liquid crystal display cells in the warning device (not shown) etc., circulate a notice of to the relevant department that monitors gas safe by telephone line simultaneously.
Operational circumstances in the explained later said structure.Under typical operating position, liquefied petroleum gas container links to each other with pressure regulator by high-pressure hose, is provided with gas breaker between the downstream of pressure regulator and combustion gas consumer appliances.The stream 1 of gas breaker is very long ducted one section, and upstream side oscillator 2 and downstream oscillator 3 oblique being arranged on relative to each other in this segment pipe are carried out flow measurement by hyperacoustic propagation.On the other hand, stream 1 tells one the tunnel at the upstream side of gas breaker, links with utensils such as gas heat pump air-conditioning devices.
Under such state that is provided with, after the Gas appliance use stops, though ducted combustion gas can be from upstream flow not downstream, but, gaseous-pressure can change during work such as the gas heat pump air-conditioning device of upstream side, detect sometimes as utensil also using positive flow, then can detect minus flow sometimes.
Below, the operational circumstances of flow velocity detection system 14 is described.Between the oblique upstream side oscillator 2 and downstream oscillator 3 that is arranged in the stream (gas pipeline) 1, ultrasonic signal is carried out and sends and receive.Switching device shifter 15 makes dispensing device 16 and upstream side oscillator 2 link to each other, make receiving trap 17 to link to each other with downstream oscillator 3, launches through upstream side oscillator 2 from the signal that dispensing device 16 sends, and receives by downstream oscillator 3.In each such bout, above-mentioned operation is carried out repeatedly, and the number of times of setting in reaching duplicating device 18 for this reason.Then, play the travel-time that receiving trap 17 receives till the ultrasonic signal and accumulate send ultrasonic signal from dispensing device 16, this time is obtained by travel-time measuring device 19.
Next, switching device shifter 15 makes dispensing device 16 and downstream oscillator 3 link to each other, make receiving trap 17 to be connected with upstream side oscillator 2.Dispensing device 16 output ultrasonic wave signals, such signal through downstream oscillator 3 and stream 1 after, received by the receiving trap 17 that is connected with upstream side oscillator 2.Also to carry out the number of times that sets in the duplicating device 18 with top the same, such operation.Launch ultrasonic signal from dispensing device 16 and play the travel-time that receiving trap 17 receives till the signal and accumulate, and further obtain travel-time when ultrasonic signal is launched downstream in the upstream and the propagation time difference between the travel-time when upstream launch in the downstream by travel-time measuring device 19.In flow computing device 20, the travel-time of obtaining in the travel-time measuring device 19 is converted into flow speed value V, then is converted into flow value Q again.In addition, the arrow A among Fig. 1 is represented the flow direction of combustion gas medium.
Next, by obtaining in accumulative total compensating device 21 pairs of flow computing devices 20
Flow value adds up.If flow be on the occasion of, then carry out addition accumulative total; If flow is a negative value, then the current aggregate-value that is stored in the accumulative total compensating device 21 is carried out subtraction.Like this, detect under the occasion of fluctuations in discharge, handle, can obtain the actual use amount of utensil by carrying out positive and negative counteracting in pressure variation because of upstream side.In change procedure, though positive negative value is cancelled each other, aggregate-value can not increase, but when utensil uses beginning, aggregate-value will increase, store the preliminary work in the integrating device 23 when reaching ormal weight, its concrete steps are as follows: when aggregate-value reaches ormal weight, by flow computing device 20 detected instantaneous deliveries, calculate the accumulative total cycle of the specific discharge of the 1/n that constitutes ormal weight with respect at this moment by addition aggregate-value calculation element 22; Then, with the cycle output unit cumulative amount of obtaining, integrating device 23 adds up, stores each departmental summary amount, and its aggregate-value is that unit carries out addition one by one with the departmental summary amount in display device 24, then show when reaching minimum displayed value, also demonstrate aggregate-value simultaneously.
Next, judge according to the flow of obtaining whether the user mode of utensil is unusual by abnormal conditions judgment means 25.Storing in the abnormal conditions judgment means 25 has: gas breaker allows the identification decision flow between maximum flow of using and the big flow that abnormal conditions such as flexible pipe comes off take place; And back and each flow territory corresponding service time of setting value are cut apart in the flow territory that permission is used to gas breaker.Abnormal conditions judgment means 25 judges that with flow computing device 20 flow of obtaining and the abnormal conditions that configure flow compares, and judges whether the phenomenon that overflows has taken place.Judging under the occasion not have to overflow then the average flow value obtained and setting value service time of combustion gas use amount are compared, whether judgement belongs to unusual long-time user mode.The concrete practice can be, under the storage table that opens circuit a service time in abnormal conditions judgment means 25, the maximum service time of the service time of having stipulated utensils such as gas heater in the table that opens circuit this service time during much longer occasion than normal use to the binding hours of service time.25 pairs of utensil flows of abnormal conditions judgment means monitor, when abnormal conditions judgment means 25 determines when unusual, then to tripper 26 output chopping signals, stream 1 are cut off.In addition, when abnormal conditions judgment means 25 judges that thereby the user mode of combustion gas occurs driving tripper 26 unusually, can also on the liquid crystal display cells of display device 24 etc., demonstrate off state and fault content, circulate a notice of to the relevant department that monitors gas safe by telephone line etc. simultaneously.
Like this, when the flow in gas breaker, flow path 1 are set carries out instrumentation, even the flow of utensil changes, also be more particularly just to obtain with all after dates of the corresponding accumulative total of utensil use traffic for each ormal weight to add up again in the present embodiment, thereby can carry out and corresponding accumulative total of the use traffic of utensil and demonstration for each specific discharge.Like this, can eliminate displayed value and flow and irrespectively keep for the moment inharmonious sense such as motionless, also can not have nothing to do, the accumulative total of mistake, but can carry out correct accumulative total and demonstration linkedly with the variation of the user mode of utensil.In addition, can also monitor the variation of the use amount of utensil from aggregate-value, correctly hold the user mode of combustion gas, improve the convenience when using by the coal gas security authority.
(embodiment 2)
Fig. 2 is the block scheme of the gas breaker among the present invention the 2nd embodiment.Put on identical symbol with the inscape that Fig. 1 and Fig. 3 have an identical function among Fig. 2, and omitted explanation it.
In addition, the difference among embodiment 2 and the embodiment 1 is to be provided with additive quantity restraint device 27.The accumulative total cycle of obtaining in addition aggregate-value calculation element 22 is under the occasion below the stipulated time, every the regular hour accumulative total cycle is added certain restriction, thereby prevents from intactly in the too short cycle not become accumulative total to operate such mistake to take place.
Operational circumstances in the explained later said structure.Wherein since calculate in the addition aggregate-value calculation element 22 among accumulative total cycle this point and the embodiment 1 identical, so in the description of this omission to it.
Here, the departmental summary amount was exported with the accumulative total cycle of obtaining.In addition, whether additive quantity restraint device 27 is also judged than the cycle weak point of regulation the accumulative total cycle of this moment.If the cycle than regulation is long, then with this accumulative total cycle output unit cumulative amount, and by integrating device 23 each departmental summary amount is added up, and the result is stored; But, thereby under the Traffic Anomaly occasion that greatly totally the cycle will lack than specified period, the cycle that then will add up is fixed certain regular hour, promptly carries out the output of departmental summary amount every above-mentioned certain hour.Under too short situation of the accumulative total cycle of calculating, in the computation process in accumulative total cycle, just need add up to operate, so the phase add operation just can not be carried out.Method by the top cycle that will add up is fixed just can prevent such operational circumstances.Then, be that unit carries out addition by 24 pairs of aggregate-values of display device with the departmental summary amount, show when reaching minimum displayed value, and demonstrate aggregate-value.
Like this, when the flow in gas breaker, flow path 1 are set carries out instrumentation, even the flow of utensil changes, also be more particularly just to obtain with all after dates of the corresponding accumulative total of utensil use traffic for each ormal weight to add up again in the present embodiment, thereby can carry out and corresponding accumulative total of the use traffic of utensil and demonstration for each specific discharge.Particularly, occur under the unusual occasion at the flow that flows through under the situations such as flexible pipe comes off, the accumulative total cycle will be set on the cycle of regulation when surpassing a certain flow, so not adding up such situation will be eliminated, show that haveing nothing to do, be maintained fixed intermittently motionless so inharmonious sense with flow also can eliminate, can not have nothing to do yet, careless accumulative total, can carry out correct accumulative total and demonstration linkedly with the variation of the user mode of utensil.In addition, can also monitor that from aggregate-value the use amount of utensil changes, correctly hold the user mode of combustion gas, improve degree easy to use by the coal gas security authority.
In addition, gas breaker of the present invention can also use the tap water meter that the liquid media such as water that flow is carried out instrumentation in stream by ultrasound wave, and the occasions such as power meter of instrumentation/accumulative total electricity usage amount under.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003411467A JP4487552B2 (en) | 2003-12-10 | 2003-12-10 | Gas shut-off device |
| JP2003411467 | 2003-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1627047A CN1627047A (en) | 2005-06-15 |
| CN1303404C true CN1303404C (en) | 2007-03-07 |
Family
ID=34732188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100979761A Expired - Lifetime CN1303404C (en) | 2003-12-10 | 2004-12-02 | Gas breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4487552B2 (en) |
| KR (1) | KR101073239B1 (en) |
| CN (1) | CN1303404C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006133157A (en) * | 2004-11-09 | 2006-05-25 | Matsushita Electric Ind Co Ltd | Gas shutoff device |
| JP5121222B2 (en) * | 2006-12-13 | 2013-01-16 | リコーエレメックス株式会社 | Ultrasonic flow meter |
| CN101578504B (en) * | 2006-12-28 | 2012-01-11 | 松下电器产业株式会社 | Flowmeter and gas supply system |
| JP4492648B2 (en) * | 2007-07-12 | 2010-06-30 | パナソニック株式会社 | Gas shut-off device |
| JP5277749B2 (en) * | 2008-06-24 | 2013-08-28 | パナソニック株式会社 | Gas shut-off device |
| JP5293152B2 (en) * | 2008-12-19 | 2013-09-18 | パナソニック株式会社 | Gas shut-off device |
| EP2383513A1 (en) * | 2009-01-29 | 2011-11-02 | Panasonic Corporation | Gas shutoff device |
| JP5914877B2 (en) * | 2011-11-17 | 2016-05-11 | パナソニックＩｐマネジメント株式会社 | Gas flow rate detection device and gas flow rate detection method |
| CN112857487A (en) * | 2019-11-27 | 2021-05-28 | 株洲珠华水工业科技开发有限公司 | Ultrasonic water meter with multiple transmission modes |
| CN113883415B (en) * | 2021-09-16 | 2024-02-20 | 杨春顺 | Automatic gas circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0921667A (en) * | 1995-07-07 | 1997-01-21 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
| CN1169185A (en) * | 1994-10-19 | 1997-12-31 | 松下电器产业株式会社 | Flow Rate Measurement Methods and Ultrasonic Flow Meters |
| JP2003156372A (en) * | 2001-11-20 | 2003-05-30 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
| JP2003302269A (en) * | 2002-04-08 | 2003-10-24 | Kansai Gas Meter Co Ltd | Method and device for measuring ultrasonic flow velocity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000213968A (en) | 1998-11-19 | 2000-08-04 | Yazaki Corp | Electronic gas metering device and electronic gas meter |
| JP2001059758A (en) | 1999-08-23 | 2001-03-06 | Kansai Gas Meter Co Ltd | Method for summing up quantity of flow for ultrasonic flowmeter |
-
2003
- 2003-12-10 JP JP2003411467A patent/JP4487552B2/en not_active Expired - Lifetime
-
2004
- 2004-08-30 KR KR1020040068339A patent/KR101073239B1/en not_active IP Right Cessation
- 2004-12-02 CN CNB2004100979761A patent/CN1303404C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169185A (en) * | 1994-10-19 | 1997-12-31 | 松下电器产业株式会社 | Flow Rate Measurement Methods and Ultrasonic Flow Meters |
| JPH0921667A (en) * | 1995-07-07 | 1997-01-21 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
| JP2003156372A (en) * | 2001-11-20 | 2003-05-30 | Matsushita Electric Ind Co Ltd | Flow rate measuring apparatus |
| JP2003302269A (en) * | 2002-04-08 | 2003-10-24 | Kansai Gas Meter Co Ltd | Method and device for measuring ultrasonic flow velocity |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005172554A (en) | 2005-06-30 |
| KR101073239B1 (en) | 2011-10-12 |
| CN1627047A (en) | 2005-06-15 |
| KR20050056848A (en) | 2005-06-16 |
| JP4487552B2 (en) | 2010-06-23 |
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