CN201066289Y - Flux measuring device and flux measuring system - Google Patents
Flux measuring device and flux measuring system Download PDFInfo
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- CN201066289Y CN201066289Y CNU2007200014156U CN200720001415U CN201066289Y CN 201066289 Y CN201066289 Y CN 201066289Y CN U2007200014156 U CNU2007200014156 U CN U2007200014156U CN 200720001415 U CN200720001415 U CN 200720001415U CN 201066289 Y CN201066289 Y CN 201066289Y
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Abstract
A flow measuring device is to have more accurate zero correction and prevent the users from using the fluid incorrectly. In a gas instrument (100) as a flow measuring device, a valve (14) is deployed on the downstream of a measuring part (15) along a flow path (13). In addition, the gas instrument (100) receives readings from a readable IC card read-writing device (200) which stores an IC card (300) with readings corresponding to the usable amount of gas. When the reading is 0 and the flow is not equal to zero after being calculated, a flow calculation part (27) warns the user by a display part (34) or a beeper (36).
Description
Technical field
The utility model relates to the flow measurement device of the flow of measuring fluids such as gas.
Background technology
Measure the flow of the fluid of gas, liquid and so on, the device of flow velocity, known have a lot of modes.Particularly because the electronics development of technology utilizes the development progress of the high hyperacoustic flow rate determinator of reliability surprising.And, utilized hyperacoustic flow rate determinator to relate to many-sided applications such as mensuration of the flow velocity in the instrument of fuel gas (gas instrument), industrial tester, therapeutic medical hemodromograph, ocean, the atmosphere.Utilize this hyperacoustic flow rate determinator not only to have and directly utilize hyperacoustic situation, also have as utilizing hyperacoustic situation indirectly based on the detecting element of the determinator of other measuring principles.
Also have, be not limited to utilize hyperacoustic flow rate determinator, also can utilize a lot of sensors such as flow sensor, resistance value sensor, temperature sensor, voltage sensor in the flow rate determinator.And these sensors that send electric signal can be influenced by external condition and make change of sensitivity.Therefore require the employed flow rate-measuring devices such as instrument of fuel gas can measure very little fluctuations in discharge, for example 3 liters of/hour such subtle change.In order to hold such subtle change exactly, must be the determinator at the zero point of energy revisal mensuration.
According to above viewpoint, proposed to judge whether to carry out the technology of revisal at zero point in patent documentation 1, the patent documentation 2 with given interval, valve all is set in a plurality of streams, closed the technology of null value revisal of the stream of this valve.
Also have, flow measurement device is particularly at gas instrument (ガ ス メ one ; Be also referred to as gas meter) the field in, adopted the pre-paid system (with reference to patent documentation 3) that is used for positively collecting gas fees from the user of gas.The gas business method of the program that inspection, record, the request before this system has changed is such is to buy gas with user's payment in advance, carries out automatic gauge, and what prevent gas effectively usurps, asks system improperly.In the occasion of using gases, the user is being with IC-card (prepaid card), buys a certain amount of gas from gas operating division.Computing machine gas is managed terminal the pairing number of degrees of capacity of the gas of having bought by reservation by password related method is write in the IC-card.The user inserts this card in the gas instrument just can utilize gas.The number of degrees of having bought by reservation tail off, and the gas instrument alarm of just ringing informs that the user buys gas.The number of degrees of having bought have not had, and instrument is just automatically cut off gas, open the supply that stream carries out gas at the time point that has newly inserted the IC-card of the capacity that gas is arranged.
Patent documentation 1: the spy opens flat 8-271307 communique
Patent documentation 2: special table 00-70312 communique
Patent documentation 3: the spy opens flat 9-180053 communique
The utility model content
The problem that utility model is planned solution
When carrying out the zero point revisal, make the pressure stability in the flow measurement device also very important for carrying out revisal accurately.Therefore, seeking to make valve to close the more technology of stabilization of pressure afterwards.
Also have, in the flow measurement device that has adopted pre-paid system, the user also pries open valve by force after the number of degrees of IC-card become zero, transformation valve etc. and wrongly the state of affairs of using gases constantly take place.Also seeking to prevent the technology of so improper use.
The utility model provides can be easily and carry out the flow measurement device of revisal at zero point exactly.Also have, the utility model provides the flow measurement device that can positively regain the cost of use of fluid.
Be used to solve the scheme of problem
The utility model provides a kind of flow measurement device, possesses: the stream that fluid passes through; Be configured in the above-mentioned stream, instrumentation is by the instrumentation portion of the flow rate of fluid of above-mentioned stream; Be configured in the downstream of above-mentioned instrumentation portion along above-mentioned stream, open and close the switching portion of above-mentioned stream; Based on by above-mentioned instrumentation portion instrumentation to flow rate of fluid, the flow operational part of the flow of computing fluid; When having closed above-mentioned stream, detect the null value of above-mentioned instrumentation portion and the correcting section at zero point of carrying out the null value revisal by above-mentioned switching portion; But receive the transmission acceptance division of the above-mentioned number of degrees from the storage medium reading device that can read the storage medium of having stored the number of degrees corresponding with the use amount of fluid; And when these number of degrees become specified value, carry out the notice portion of given notice to the user.
In the above-described configuration, switching portion is arranged on the downstream of instrumentation portion, thereby can prevent that the inside of flow measurement device from becoming negative pressure.Therefore, in this flow measurement device, can carry out the revisal at zero point more accurately.
Receive the transmission acceptance division of the above-mentioned number of degrees and when these number of degrees become specified value, carry out the notice portion of given notice to the user but possess in the flow measurement device from the storage medium reading device that can read the storage medium of having stored the number of degrees corresponding with the use amount of fluid.
In addition, as above-mentioned specified value, can be zero.
In the above-described configuration, in the non-vanishing occasion of specified value, the user can become at the number of degrees and bought the storage medium of having stored the number of degrees before zero, can prevent to stop in making purposes the such problem of supply of gas.At specified value is zero occasion, can notify the user soon can not supply gas.
Also have, but can also be provided with in the flow measurement device from the storage medium reading device that can read the storage medium of having stored the number of degrees corresponding and receive the transmission acceptance division of the above-mentioned number of degrees and when these number of degrees are zero with the use amount of fluid, calculate the occasion of non-vanishing flow at above-mentioned flow operational part, carry out the notice portion of given notice to the user.
In the above-described configuration, become the occasion that user after zero uses fluid wrongly, carry out given notice to the user at the number of degrees.By such action, just can suppress user's improper use.
Have again, also can be, possess the above-mentioned stream of many groups, above-mentioned instrumentation portion and above-mentioned switching portion, and the driven for opening and closing portion of selecting the switching portion corresponding with the stream of being closed by above-mentioned switching portion is set, above-mentioned zero point, correcting section was when the stream of the switching portion of being selected by above-mentioned driven for opening and closing portion has been closed, detect the null value of the instrumentation portion corresponding, carry out the null value revisal with this stream.
In the above-described configuration, in the mobile continual device of fluid, also can carry out the instrumentation of the flow of fluid.
Also have, the utility model provides a kind of flow rate measuring system, possesses: the flow measurement device of the flow of instrumentation fluid; But and the storage medium reading device that can read the storage medium of having stored the number of degrees corresponding with the use amount of fluid, when the above-mentioned number of degrees are zero, measure the occasion of non-vanishing flow at above-mentioned flow measurement device, above-mentioned flow measurement device carries out given notice to the user.
In the above-described configuration, become the occasion that user after zero uses fluid wrongly, carry out given notice to the user at the number of degrees.By such action, just can suppress user's improper use.
Above-mentioned storage medium for example is the prepaid card that the user has bought in advance.In this occasion, the utility model is applicable to the pre-paid system of the fluid of widespread use.
The utility model effect
According to the utility model, can carry out the revisal at zero point in the flow measurement device more accurately, and can suppress the user and use fluid wrongly.
Description of drawings
Fig. 1 is the block diagram of summary of the gas fees pre-paid system of the expression gas instrument device that comprises embodiment of the present utility model.
Fig. 2 is the block diagram of the formation of expression gas instrument device.
Fig. 3 is the figure of formation that schematically represents the instrumentation portion of gas instrument device.
Fig. 4 is the block diagram of the formation of the instrumentation portion of expression gas instrument device and other parts.
Fig. 5 is the block diagram of the formation of expression IC-card read-write equipment.
Fig. 6 is the process flow diagram of the action of explanation gas fees pre-paid system.
Fig. 7 is the block diagram of formation that expression has the gas instrument device of a plurality of streams.
Label declaration
13 streams
14 valves
15 instrumentation portions
27 flow operational parts
30 flux cumulating portions
32 send acceptance division
34 display parts
36 hummers
40 zero point correcting section
45 driven for opening and closing portions
100 gas instrument devices
200 IC-card read-write equipments
209 signals send acceptance division
210 number of degrees reading parts
211 number of degrees reduction portions
212 flows cut off detection unit
213 IC-card insertion sections
214 control parts
300 IC-cards
Embodiment
Below, with reference to accompanying drawing embodiment of the present utility model is described.Fig. 1 is expression as the gas instrument device of the embodiment of flow measurement device of the present utility model and comprises the block diagram of summary of the gas fees pre-paid system of this gas instrument device.Gas fees pre-paid system (flow rate measuring system) air inclusion metering device 100 and can insert IC-card read-write (R/W) device (the storage medium reading device) 200 of getting IC-card (prepaid card) 300.
As shown in Figure 2, gas instrument device 100 possesses stream 13, valve 14, instrumentation portion 5, zero point correcting section 40, flow operational part 27, flux cumulating portion 30, sends acceptance division 32, notice portion 38 and driven for opening and closing portion 45.
Zero point, correcting section 40 was when having closed stream 13 by valve 14, detected the null value of instrumentation portion 15 and carried out the null value revisal.Flow operational part 27 based on by instrumentation portion 15 instrumentations to the flow velocity of gas and the basal area of stream 13 flow that comes computing gas.Flux cumulating portion 30 calculates, put aside the aggregate-value of the flow of the gas during given.Send acceptance division 32 and IC-card read-write equipment 200 between carry out information such as integrated flow by cable 3 transmission receive.
Fig. 3 represents the formation of a part of the instrumentation portion 15 of gas instrument device 100.The hollow arrow A of Fig. 3 is illustrated in the mobile direction of gas in the stream 13 (fluid).Instrumentation portion 15 comprises the 1st oscillator 21 and the 2nd oscillator 22 that is arranged in the stream 13.The 1st oscillator 21 and the 2nd oscillator 22 are configured to press from both sides the fluids that flow on Jie's longshore current road 13 and relative.The 1st oscillator 21 and the 2nd oscillator 22 send received ultrasonic signal.
Fig. 4 is the block diagram of formation of the part of presentation graphs 2, instrumentation portion shown in Figure 3 15 and the gas instrument device 100 that is connected with instrumentation portion 15.Instrumentation portion 15 comprises: the sending part 23 of sending periodic drive signal to the 1st oscillator 21 and the 2nd oscillator 22; The enlarging section 24 that the ultrasonic signal that has received is amplified; Relatively from the enlarging section 24 output signals and the comparing section 29 of reference signal; Got from the signal of comparing section 29 output, set multiplicity when having detected the above signal of reference signal,, between the 1st oscillator 21 and the 2nd oscillator 22, repeated the repetition portion 46 that ultrasound wave transmits by this multiplicity of having set; When this repetition, make the delay portion 10 of ultrasound wave transmission delay; And timing portion 25.
Detecting from the enlarging section 24 occasions of having exported the signal more than the reference signal by comparing section 29, the signal that comparing section 29 has arrived to repetition portion 46 output expression received signals.Repetition portion 46 is got from the signal of comparing section 29 outputs, judges to receive to be subjected to the number of times of this signal whether to reach predefined multiplicity.Reached the occasion of predefined multiplicity at the number of times that receives this signal, repetition portion 46 control transmission means 23 make by make the delay portion 10 of signal delay by certain hour, send ultrasonic signals from sending part 23.Repeat to send ultrasonic signal from sending part 23 like this.
The transmission that switching part 26 switches the 1st oscillator 21 and the 2nd oscillator 22 receives.Promptly, the 1st oscillator 21 of upstream side sends ultrasonic signal, the 2nd oscillator 22 in downstream receives the such ultrasound wave transmission of this ultrasonic signal by after the number of times repetition of setting, the 2nd oscillator 22 in downstream sends ultrasonic signal, and the 1st oscillator 21 of upstream side receives the such ultrasound wave transmission of this ultrasonic signal and repeats by the number of times of setting.
Timing portion 25 obtains by the number of times of setting and repeats to transmit the needed time (the 1st passing time) and repeat to transmit the needed time (the 2nd passing time) from the 2nd oscillator 22 to the ultrasound wave of the 1st oscillator 21 by the number of times of setting to the ultrasound wave of the 2nd oscillator 22 from the 1st oscillator 21, obtains the mistiming of 2 times.Timing portion 25 for example is a timer conter.
Flow operational part 27 is based on the basal area of the speed of the fluid of being obtained by timing portion 25 and stream 13 and obtain flow.In instrumentation portion, use ultrasound wave like this, just can not upset flowing of fluid and the mensuration flow.
In the occasion that valve 14 is closed, fluid does not flow in stream 13.In this occasion, should be 0 by the flow (flow velocity) of instrumentation portion 15 instrumentations., sometimes since temperature etc. from the temperature variation of externalities, flow operational part 27, timeliness variation etc., depart from the zero point of instrumentation portion 15 sometimes.In this occasion, being differed by the flow of instrumentation portion 15 instrumentations is decided to be 0.
For example, the 1st oscillator the 21, the 2nd oscillator 22 is because temperature etc. can produce skew from externalities, timeliness variation etc.Even can imagine that therefore fluid does not flow, also can go out mobile situation by flase drop owing to received signal.In order to prevent such phenomenon, correcting section 40 at zero point zero point of revisal instrumentation portion 15 in advance when not having flow.By carrying out this operation, when next valve 14 had been opened, instrumentation portion 15 can carry out the instrumentation operation at once.
Zero point, correcting section 40 values based on flow operational part 27 detected the null value that is arranged on the instrumentation portion 15 in the stream 13 that valve 14 closed, and carried out the null value revisal.For example, under the state of having closed at valve 14 by instrumentation portion 15 instrumentations to value as the basic value (value of the occasion of flow zero, be null value), to when valve is opened for 14 next times by instrumentation portion 15 instrumentations to value increase and decrease this basic value, thereby reach this null value revisal.
At this moment, occasion that has departed from greatly at zero point etc. informs that to the user this is unusual by display part 34, hummer 36, and this also is effective.Utilize to send acceptance division 32 again or other supvr of connecting portion to the outside with external unit report that just can carry out the reparation of abnormality quickly, this is useful.
Zero point, correcting section 40, for example comprised storage part (not shown) and increase and decrease portion (not shown).Under the state of having closed at valve 14 by instrumentation portion 15 instrumentations to value be stored in the storage part as basic value (value of the occasion of flow zero, i.e. null value).Increase and decrease portion is to opening for 14 next times at valve, in stream 13 during the fluid actual flow by instrumentation portion 15 instrumentations to the value increase and decrease be stored in basic value in the storage part.
For example, under the state that valve 14 has been closed by instrumentation portion 15 instrumentations to value (null value) be 5 liters, and open for 14 next times at valve, in stream 13 during the fluid actual flow by instrumentation portion 15 instrumentations to value be 15 liters occasion, increase and decrease portion carries out the such subtraction of 15-5=10.Also have, for example, under the state that valve 14 has been closed by instrumentation portion 15 instrumentations to value (null value) be-5 liters, and open for 14 next times at valve, in stream 13 during the fluid actual flow by instrumentation portion 15 instrumentations to value be 15 liters occasion, increase and decrease portion carries out 15-(5)=such addition of 15+5.
Like this, zero point, correcting section 40 detected the null value of instrumentation portion 15, based on the null value that has detected come revisal by instrumentation portion 15 instrumentations to the null value revisal of value.
At this, when carrying out the zero point revisal, it is important making the pressure stabilityizations in the gas instrument device 100, and the pressure after preferably valve 14 is closed will be stablized as far as possible.
But valve 14 is in the occasion of upstream side in gas instrument device 100, and the gas that the space segment in remaining downstream exists is used, thereby the inside of gas instrument device 100 becomes negative pressure as a whole easily.Under such situation, be difficult to make the pressure inside stabilization of gas instrument device 100.And the instrumentation portion 15 of the flow of instrumentation gas (flow velocity) is in the downstream of valve 14, just is difficult to carry out exactly the revisal at zero point.
But in the utility model, shown in the enforcement mode, valve 14 is arranged on the downstream of instrumentation portion 15.Therefore, even valve 14 is closed, what all can have gas residue in instrumentation portion 15, can prevent that the inside of gas instrument device 100 from becoming negative pressure.Therefore, in the gas instrument device of present embodiment, can carry out the revisal at zero point more accurately.
Fig. 5 represents the IC-card read-write (block diagram of R/W＞device 200.IC-card read-write equipment 200 comprises signal and sends acceptance division 209, number of degrees reading part 210, number of degrees reduction portion 211, flow partition detection unit 212, IC-card insertion section 213 and control part 214.
Signal sends acceptance division 209 and carries out the transmission reception of signal with the transmission acceptance division 32 of gas instrument device 100.Number of degrees reading part 210 reads in the number of degrees that write in the IC-card (storage medium) 300, and number of degrees reduction portion 211 cuts down the number of degrees of IC-card according to the use amount of gas.Flow cuts off partition or the open judgement that detection unit 212 carries out flow.IC-card insertion section 213 is IC-card 300 parts of getting of inserting.Control part 214 carries out the integral body control of IC-card read-write equipment 200.
Next illustrates the related IC-card 300 of the user of gas, the use-pattern of IC-card read-write equipment 200.
At first, the user of gas buys showroom, other the local IC-cards 300 sold in gas companies, and IC-card 300 is the storage mediums that write the number of degrees corresponding with the use amount of gas in advance, is so-called prepaid card.These number of degrees represent to utilize how much gas, according to the purchase amount of money of IC-card 300, and the varying in size of the number of degrees that are written into.Bought and inserted IC-card 300 in the IC-card read-write equipment 200 of user in the own home of IC-card 300 and just can utilize gas.
The user is 213 insertion IC-cards 300 in the IC-card insertion section, and number of degrees reading part 210 just reads in the number of degrees that write in this IC-card 300.And signal sends acceptance division 209 information of these number of degrees that read is sent to gas instrument device 100.The transmission acceptance division 32 of gas instrument device 100 receives the information of the number of degrees.Based on this number of degrees information that has received, driven for opening and closing portion 45 opens valve 14, and gas flows with regard to longshore current road 13.By this a succession of control, with regard to the energy using gases.
As mentioned above, the flow of the gas that flows of longshore current road 13 comes computing by the flow operational parts 27 in the gas instrument device 100.And the flow of the gas that calculates is fed to flux cumulating portion 30 to be added up.The flow that has been added up by flux cumulating portion 30 is fed to IC-card read-write equipment 200 by sending acceptance division 32.The signal of IC-card read-write equipment 200 sends acceptance division 209 and receives the flux cumulating value of sending here from gas instrument device 100, and this aggregate-value is fed to number of degrees reduction portion 211.Number of degrees reduction portion 211 cuts down the number of degrees that read by number of degrees reading part 210 based on this aggregate-value.
That is, number of degrees reduction portion 211 reduces number of degrees remaining sum according to the flow of the gas that has used.Repeat such action, the result, the number of degrees that read at number of degrees reading part 210 become 0 occasion, and number of degrees reduction portion 211 cuts off the signal of this connotation of detection unit 212 outputs to flow.Flow cuts off detection unit 212 and receives the signal that the number of degrees from number of degrees reduction portion 211 become 0 connotation, sends acceptance division 209 sends signal from the connotation of cutting off gas flow to gas instrument device 100 by signal again.The transmission acceptance division 32 of gas instrument device 100 receives the partition signal that expression cuts off the connotation of gas from IC-card read-write equipment 200, just sends this signal to driven for opening and closing portion 45.Driven for opening and closing portion 45 receives the partition signal and closes closed channel 13, cuts off gas flow.The user is cut off by confirming gas, the situation that gas apparatus has stopped, and the number of degrees of holding IC-card become 0 situation, insert new IC-card in IC-card read-write equipment 200.So just can utilize gas, thereby can prevent usurping of gas, can carry out the stable supplying of gas by the amount of the number of degrees that write in advance in the IC-card.
On the other hand, after gas was cut off, the user also can pry open valve, using gases wrongly by force sometimes.Such problem is the problem that especially can see in the gas supply system of the pre-paid system of having utilized IC-card one class prepaid card.
Under wrongful like this use, driven for opening and closing portion 45 closes after the closed channel, although the number of degrees do not upgrade, flow operational part 27 also can be calculated the flow of the gas of specified rate (not being zero).To this, flow operational part 27 sends the warning notice signal to display part 24 and/or hummer 36.At this moment, display part 24 shows the message of connotation that can not using gases, provides the connotation that this user stops using gas.Also have, replace display part 24, or with such action of display part 24, produce warning tones, provide the connotation that this user stops using gas as connotation that can not using gases by hummer 36.Just can suppress user's improper use by such action.
Fig. 6 is the process flow diagram of action of the gas fees pre-paid system of explanation air inclusion metering device 100 and IC-card read-write equipment 200.Here, the number of degrees that IC-card 300 is described become after zero, and valve 14 is opened (destroyed) wrongly, and after this new IC-card 300 has been loaded into the action under the situation of system.
At first, in given timing, number of degrees reading part 210 reads in the number of degrees (step S101) that write in the IC-card 300.As the example of given timing, when having the user in IC-card insertion section 213, to insert IC-card 300 or during the power connection of gas instrument device 100, IC-card read-write equipment 200.Also have, also can read in the number of degrees that write in the IC-card 300 by number of degrees reading part 210 by the given time interval.
The number of degrees information that signal transmission acceptance division 209 is sent here by transmission acceptance division 32 is received by driven for opening and closing portion 45, judges that these number of degrees are zero (step S102).At the number of degrees is not zero occasion (step S102; NO), the switching (step S103) of valve 14 is judged by driven for opening and closing portion 45.Be judged to be occasion (the step S103 that valve 14 has been opened; YES), driven for opening and closing portion 45 former states are kept the state of valve, turn back to step S101 once more, read number of degrees information.On the other hand, be judged to be occasion (the step S103 that valve 14 has been closed; NO), driven for opening and closing portion 45 opens valve 14 (step S104), turns back to step S101 once more, reads number of degrees information.
Being judged to be the number of degrees in step S104 is zero occasion (step S102; YES), the switching (step S105) of valve 14 is judged by switch drive portion 45.Be judged to be occasion (the step S105 that valve 14 has been opened; NO), driven for opening and closing portion 45 valve-offs 14 (step S106).In step S105, be judged to be occasion (the step S105 that valve 14 has been closed; YES), driven for opening and closing portion 45 former states are kept the state of valve.
And after valve 14 was closed, zero point, correcting section 40 was carried out the revisal at zero point (step S107) of instrumentation portion 15.Yet, although valve 14 has been closed, because the users' such as destruction of valve 14 improper use, instrumentation portion 15 detects the speed (not being zero) of a little gases, flow operational part 27 calculates the words (step S108) of the gas flow that is not zero, and flow operational part 27 just sends the warning notice signals to display part 24 and hummer 36.Then, display part 24 shows the message as connotation that can not using gases, and hummer 36 produces the warning tones (step S109) as connotation that can not using gases.At this, also can only make any one action in display part 24 and the hummer 36.
Although the warning notice in having received step S109, the user does not also stop the use of gas, and flow operational part 27 does not calculate occasion (the step S110 of gas flow=0; NO), display part 24, hummer 36 just continue warning.On the other hand, the warning notice in having received step S109, the user is by the use that grade stops gas that stops of gas utensil, and flow operational part 27 calculates occasion (the step S110 of gas flow=0; YES), just stop warning.
After this, (in the occasion of having destroyed valve, repairing after the valve) user buys the new IC-card 300 of having filled the number of degrees, with its words of in IC-card insertion section 213, inserting, the information of these number of degrees just sends acceptance division 209 by number of degrees reading part 210, control part 214, signal and is fed to gas instrument device 100, the transmission acceptance division 32 that received number of degrees information this number of degrees information that has received give zero point correcting section 40 (step S111).Received is not that the correcting section at zero point of zero the number of degrees 40 is carried out the revisal at zero point (step S112) of instrumentation portion 15 once more.After this, driven for opening and closing portion 45 opens valve 14 (step S104).Like this, gas flows on longshore current road 13 once more.After this continue the later control of execution in step S101 once more.
Also comprise the program that makes gas instrument device 100 carry out above-mentioned order in the utility model.Such procedure stores is in storage area of the not shown control part of the integral body of pilot-gas metering device 100 etc.
Also have, in the above-described embodiment, be provided with single instrumentation portion 15, valve 14 for single stream 13.At this, many group streams, instrumentation portion, valve can be set in the gas instrument device 100.Fig. 7 represents such example, and gas instrument device 100 has 3 streams 13 and (13a～13c), is arranged on valve 14 in the stream 13 ((15a～15c) of 14a～14c) and instrumentation portion 15.Valve 14a and the 15a of instrumentation portion have been adorned among the stream 13a.Valve 14b and the 15b of instrumentation portion have been adorned among the stream 13b.Valve 14c and the 15c of instrumentation portion have been adorned among the stream 13c.And driven for opening and closing portion 45 can distinguish and opens and closes valve 148～14c independently.In addition, omitted the diagram of the part beyond flow operational part 27, zero point correcting section 40, the driven for opening and closing portion 45.
A plurality of stream 138～13c all open, and the fluid of big flow just can flow, and can carry out instrumentation to it.Only open 1 stream among a plurality of stream 13a～13c, the fluid of low discharge just can flow.Like this, a plurality of valve 148～14c that use can be opened and closed one by one by driven for opening and closing portion 45 just can make to become easy with corresponding stream selection such as flow, can carry out instrumentation in big fluctuations in discharge scope.
In addition, stream 13 can be the stream of basal area of many equalizations of combination, thereby improves versatility, and maintenance is become easily, can also be the basal area difference, carries out the formation of the optimal selection of this stream according to flow etc.Stream is 3 in the utility model, and gets how many not other meanings in number.So long as more than 2, several can.
Flow operational part 27 add up to by the 15a～15c of instrumentation portion to every stream instrumentation to the computing of flow.The sum total flow of being obtained by flow operational part 27 is made as Q, and the flow that instrumentation portion 15a, 15b, the 15c that is provided with among the stream 138 that valve 14 is split into, 13b, the 13c obtained is made as qa, qb, qc respectively, then Q=qa+qb+qc=∑ q.
The stream 13 of closing and the selection of corresponding valve 14 are undertaken by driven for opening and closing portion 45.Closed the occasion of valve 14a in driven for opening and closing portion 45, fluid does not flow in stream 13a.Even therefore by instrumentation portion 158 instrumentation fluid flows, original flow measurement does not have obstacle yet.Thereby in the mobile continual device of fluids such as gas, also just can carry out the instrumentation of the flow of fluid.The degree of stability of measuring system when therefore opening this stream is good, can carry out not having zero point the instrumentation of deviation, can prevent that precision from becoming unstable.
In addition, adopted ultrasonic element in instrumentation portion in the above-mentioned explanation, but, not limited by this, for example possess as instrumentation portion be arranged in the stream with electric power as the heat generating part of drive source, detect the temperature-sensitive portion more than at least 1 of the temperature variation that produces owing to flow and change the flow operational part of calculating flow based on the signal of above-mentioned temperature-sensitive portion, also can carry out same flow measurement.
Also have, in the example of the control of Fig. 6, become zero (step 102), and flow not zero occasion (step S108), carry out given warning notice (step S109) at the number of degrees of IC-card 300.But, be not must the number of degrees be zero and flow begin to notify when not being zero, also can when only the number of degrees become specified value (following), carry out given notice to the user.At specified value is not zero occasion, and the user can buy before the number of degrees become zero store the storage medium of the number of degrees, thereby just can prevent the problem that the supply of gas is stopped in making purposes.At specified value is zero occasion, can soon can not supply gas to user notification.
As the embodiment of above-mentioned flow measurement device, enumerated the gas instrument device as an example, but, the utility model also goes for the flow measurement device of other fluids.Also have, gas instrument device and IC-card read-write equipment constitute as the device of split separately in embodiment, and but, both also can constitute the device of one.In this occasion without cable 3.Also have, also can replace using the wire communication of cable 3 and the radio communication that adopts variety of way.
Various embodiment of the present utility model more than has been described; but; the utility model is not limited to the item shown in the above-mentioned embodiment; it also is that the utility model is scheduled to and will be done that the change that those skilled in the art do based on the record and the technique known of instructions is used, and is included in the claimed scope.
In addition, be associated with the utility model, a kind of program can also be provided, it is the program of flow measurement device work that makes the flow of instrumentation fluid, makes above-mentioned flow measurement device carry out following order: but read the order of the number of degrees corresponding with the use amount of fluid; The order of the flow of instrumentation fluid; And when the number of degrees that read were zero, instrumentation carried out the order of given notice to the occasion that is not zero flow to the user.
Industrial applicibility
The utility model can be realized can be easily and carry out exactly the revisal at zero point, can positively regain The flow measurement device of the cost of use of fluid.
Claims (6)
1. flow measurement device is characterized in that possessing:
The stream that fluid passes through;
Be configured in the above-mentioned stream, instrumentation is by the instrumentation portion of the flow rate of fluid of above-mentioned stream;
Be configured in the downstream of above-mentioned instrumentation portion along above-mentioned stream, open and close the switching portion of above-mentioned stream;
Based on by above-mentioned instrumentation portion instrumentation to flow rate of fluid, the flow operational part of the flow of computing fluid;
When having closed above-mentioned stream, detect the null value of above-mentioned instrumentation portion and the correcting section at zero point of carrying out the null value revisal by above-mentioned switching portion;
But receive the transmission acceptance division of the above-mentioned number of degrees from the storage medium reading device that can read the storage medium of having stored the number of degrees corresponding with the use amount of fluid; And
When these number of degrees become specified value, carry out the notice portion of given notice to the user.
2. flow measurement device according to claim 1 is characterized in that, above-mentioned specified value is zero.
3. flow measurement device according to claim 1 is characterized in that also possessing:
But receive the transmission acceptance division of the above-mentioned number of degrees from the storage medium reading device that can read the storage medium of having stored the number of degrees corresponding with the use amount of fluid; And
When these number of degrees are zero, calculate the occasion of non-vanishing flow at above-mentioned flow operational part, carry out the notice portion of given notice to the user.
4. according to any described flow measurement device in the claim 1 to 3, it is characterized in that,
Possess the above-mentioned stream of many groups, above-mentioned instrumentation portion and above-mentioned switching portion,
Also possess the driven for opening and closing portion of selecting the switching portion corresponding with the stream of closing by above-mentioned switching portion,
Above-mentioned zero point, correcting section was when the stream of the switching portion of having been selected by above-mentioned driven for opening and closing portion has been closed, and detected the null value of the instrumentation portion corresponding with this stream, carried out the null value revisal.
5. flow rate measuring system is characterized in that possessing:
The flow measurement device of the flow of instrumentation fluid; And
But can read the storage medium reading device of the storage medium of having stored the number of degrees corresponding with the use amount of fluid,
When the above-mentioned number of degrees are zero, measure the occasion of non-vanishing flow at above-mentioned flow measurement device, above-mentioned flow measurement device carries out given notice to the user.
6. flow rate measuring system according to claim 5 is characterized in that, above-mentioned storage medium is the prepaid card that the user has bought in advance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006261729A JP2008082799A (en) | 2006-09-27 | 2006-09-27 | Flow measuring instrument, flow measuring system, and program for flow measuring instrument |
| JP2006261729 | 2006-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201066289Y true CN201066289Y (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200014156U Expired - Fee Related CN201066289Y (en) | 2006-09-27 | 2007-01-24 | Flux measuring device and flux measuring system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008082799A (en) |
| CN (1) | CN201066289Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900646A (en) * | 2012-12-26 | 2014-07-02 | 阿自倍尔株式会社 | Flow operation device and flow control device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010139360A (en) * | 2008-12-11 | 2010-06-24 | Tokyo Gas Co Ltd | Gas supply security apparatus and gas meter |
| JP6077298B2 (en) * | 2012-12-26 | 2017-02-08 | パナソニック株式会社 | Flow measuring device |
| CN104916113B (en) * | 2014-03-10 | 2019-01-15 | 兰州华方智能科技有限公司 | The IC card controlling terminal of heating system building concentrator |
| CN116222669B (en) * | 2023-04-23 | 2023-10-24 | 乐山市计量测试所 | Water quality and weight real-time monitoring system and monitoring method of automatic water vending machine |
-
2006
- 2006-09-27 JP JP2006261729A patent/JP2008082799A/en active Pending
-
2007
- 2007-01-24 CN CNU2007200014156U patent/CN201066289Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900646A (en) * | 2012-12-26 | 2014-07-02 | 阿自倍尔株式会社 | Flow operation device and flow control device |
| CN103900646B (en) * | 2012-12-26 | 2017-04-12 | 阿自倍尔株式会社 | Flow operation device and flow control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008082799A (en) | 2008-04-10 |
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