CN211696534U - Ultrasonic gas meter of multichannel - Google Patents

Abstract

The utility model provides an ultrasonic wave gas table of multichannel, include: the housing has an interior enclosed chamber; the shell is provided with an air inlet and an air outlet, and the air inlet is communicated with the internal closed cavity; the detection sound channel is arranged in the inner closed cavity; the detection sound channel is formed by connecting a plurality of branch sound channels in parallel and is used for detecting the instantaneous flow of the fuel gas; the instantaneous flow value of the gas is equal to the sum of the measured values of the plurality of branch sound channels; the branch sound channels comprise energy converters and air channels, the air inlets of the air channels of the branch sound channels are respectively communicated with the internal closed chamber, and the air outlets of the air channels are communicated with the air outlet of the shell; the input end of the control panel is connected with the output ends of the transducers of the branch sound channels and is used for collecting the measured values of the branch sound channels and obtaining the measured result of the detected sound channel. The utility model discloses can avoid causing the condition of leaking the meter because of the transducer damages, reduce gas company's economic loss, ensure the accuracy of ultrasonic wave gas table.

Description

Ultrasonic gas meter of multichannel

Technical Field

The utility model relates to a gas measurement field specifically, relates to an ultrasonic wave gas table of multichannel.

Background

The ultrasonic flow measurement technology of the ultrasonic gas meter is mature continuously, and the core component of the ultrasonic gas meter is an energy converter. The transducer is an ultrasonic transmitting and receiving device, is a key component for measuring sound velocity and flow velocity of a gas medium, and is the only measurement component of the flowmeter, which is in direct contact with the gas medium. In the use process, due to the influence of the use environment, gas medium components and the like, the working performance of the transducer can be continuously reduced, the measurement precision can be directly influenced, the measurement error is caused, and the measurement function can be seriously lost.

At present, ultrasonic gas meters on the market mostly use single-track transducer metering as a main part, once the transducer breaks down, the ultrasonic gas meters can not accumulate gas flow, which is equivalent to that a user uses gas all the time, but the gas consumption can not be accurately metered or even not metered, and certain economic loss is brought to the charging and charging of a gas company.

Therefore, it is urgently needed to develop an ultrasonic gas meter capable of guaranteeing normal metering.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an ultrasonic wave gas table of multichannel.

According to the utility model provides an ultrasonic wave gas table of multichannel, include:

a housing having an interior enclosed chamber; the shell is provided with an air inlet and an air outlet, and the air inlet is communicated with the internal closed cavity;

a detection acoustic channel disposed within the interior enclosed chamber;

the detection sound channel is formed by connecting a plurality of branch sound channels in parallel and is used for detecting the instantaneous flow of the fuel gas; the instantaneous flow value of the gas is equal to the sum of the measured values of the plurality of branch sound channels;

the branch sound channels comprise energy converters and air channels, air inlets of the air channels of the branch sound channels are respectively communicated with the internal closed chamber, and air outlets of the air channels are communicated with the air outlet of the shell;

and the input end of the control board is connected with the output ends of the transducers of the branch sound channels, and the control board is used for acquiring the measured values of the branch sound channels and obtaining the measured result of the detection sound channel.

Preferably, the air conditioner further comprises a connecting piece, wherein the connecting piece is arranged between the air outlet of the air passage and the air outlet of the shell and is used for communicating the air outlet of the air passage and the air outlet of the shell;

the air inlets of the air passages of the plurality of branch sound channels are respectively communicated with the internal closed chamber, the air outlets of the air passages of the plurality of branch sound channels are respectively communicated with the air inlet of the connecting piece, and the air outlet of the connecting piece is communicated with the air outlet of the gas meter to form a plurality of parallel branch sound channels; the gas respectively enters the internal closed chamber from the gas inlet of the shell, is converged in the connecting piece through the plurality of branch sound channels, and flows out from the gas outlet of the shell.

Preferably, the connecting piece is a variable-diameter connecting channel, the connecting channel comprises a first member and a second member, the inner diameter of the first member is larger than that of the second member, and the size of one end of the first member is matched with that of the air passages for communicating the air outlets of the air passages of the branch sound channels; the second member is a cylindrical member.

Preferably, the first member and the air outlet of the air passage are in sealing connection by adopting an O-shaped ring.

Preferably, the first member has an inner diameter that gradually decreases from one end to the other end, and the inner diameter of the other end matches the inner diameter of the second member.

Preferably, the first member is connected to the second member to form an L-shaped channel.

Preferably, the first member is connected to the second member to form a linear channel.

Preferably, the internal structure of the ultrasonic gas meter comprises the control board and an ultrasonic time measurement module;

the control panel comprises an MCU and a display module;

the detection sound channel comprises the ultrasonic time measurement module; the ultrasonic time measurement module is used for detecting and calculating the forward flow and backward flow propagation time of ultrasonic waves;

the output end of the transducer of each branch sound channel is connected with the input end of the ultrasonic time measurement module, and the transducer feeds back acquired detection data to the ultrasonic time measurement module; the output end of the ultrasonic time measurement module is connected with the input end of the MCU, the ultrasonic time measurement module obtains detection time through the detection data and feeds the detection time back to the MCU, the MCU obtains a gas instantaneous flow value of each branch sound channel through the detection time and compares a plurality of measurement values, if one or more branch sound channel measurement values exceed a set range of other measurement values, the branch sound channel is judged to be in an abnormal state, and a final measurement result is obtained through calculation.

Preferably, the control panel further comprises a power supply and detection module and a data storage module;

the output end of the power supply and detection module is connected with the input end of the MCU and used for providing power supply and power supply voltage detection;

the output end and the input end of the data storage module are respectively connected with the input end and the output end of the MCU and used for storing metering data, correction coefficients and working states in a record table, all data are stored in a cross backup mode, and traceability of the data is guaranteed.

Compared with the prior art, the utility model discloses at least one kind's beneficial effect as follows has:

the utility model discloses in, parallelly connected formation through a plurality of branch sound channels detects the sound channel, has installed more than two transducers in ultrasonic wave gas table promptly, has formed more than two at least branch sound channels in ultrasonic wave gas table, if one of them transducer breaks down, this ultrasonic wave gas table still can normally measure, has further ensured the accuracy of ultrasonic wave gas table. The ultrasonic gas meter can be used for providing guarantee for normal metering of the ultrasonic gas meter, avoiding the condition of meter leakage caused by damage of the transducer and reducing the economic loss of a gas company.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a front sectional view of an internal structure of an ultrasonic gas meter according to a preferred embodiment of the present invention;

fig. 2 is a sectional top view of an internal structure of an ultrasonic gas meter according to a preferred embodiment of the present invention;

fig. 3 is a front cross-sectional view of an internal structure of an ultrasonic gas meter according to a preferred embodiment of the present invention;

fig. 4 is a sectional top view of an internal structure of an ultrasonic gas meter according to a preferred embodiment of the present invention;

FIG. 5 is a schematic view of the connection between the connecting member and the branch sound channel according to a preferred embodiment of the present invention;

FIG. 6 is an axial schematic view of FIG. 5;

FIG. 7 is a schematic view of the connection between the connecting member and the branch sound channel according to a preferred embodiment of the present invention;

FIG. 8 is an axial schematic view of FIG. 7;

fig. 9 is a schematic diagram illustrating connection of modules of the ultrasonic gas meter according to a preferred embodiment of the present invention;

FIG. 10 is a schematic circuit diagram of an ultrasonic time measurement module in a preferred embodiment of the present invention;

fig. 11 is a schematic circuit diagram of the MCU according to a preferred embodiment of the present invention;

fig. 12 is a schematic circuit diagram of a display module according to a preferred embodiment of the present invention;

fig. 13 is a schematic circuit diagram of a communication module of the internet of things according to a preferred embodiment of the present invention;

FIG. 14 is a schematic circuit diagram of a data storage module in a preferred embodiment of the present invention;

fig. 15 is a schematic circuit diagram of a power supply and detection module according to a preferred embodiment of the present invention;

FIG. 16 is a schematic circuit diagram of a card control module in a preferred embodiment of the present invention;

fig. 17 is a schematic circuit diagram of a valve control module according to a preferred embodiment of the present invention;

the scores in the figure are indicated as: the device comprises a shell 1, an air inlet 101, an air outlet 102, an internal closed chamber 103, a branch sound channel 2, an air inlet 201 of an air channel, a transducer 3, a connecting piece 4, a first member 401, a second member 402, a control panel 5, an MCU501, a power supply and detection module 502, a data storage module 503, a valve control module 504, a display module 505, an internet of things communication module 506, a card control module 507, a logic encryption card 508, a CPU card 509, a GPRS module 510, a 4G module 511, an NB-IoT module 512, a LoRa module 513, an ESAM module 514, a non-contact card 515, a safety function module 516 and an ultrasonic time measurement module 601.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, it is a schematic structural diagram of an ultrasonic gas meter with multiple channels according to an embodiment of the present invention, including: a housing 1, a detection sound channel and a control panel 5; wherein the housing 1 has an internally closed chamber 103, wherein the housing 1 is provided with an air inlet 101 and an air outlet 102, and the air inlet 101 is communicated with the internally closed chamber 103.

The detection sound channel is arranged in the inner closed cavity; the detection sound channel is formed by connecting a plurality of branch sound channels 2 in parallel and is used for detecting the instantaneous flow of the gas. The instantaneous flow value of the gas is equal to the sum of the measured values of the plurality of branch channels 2. The branch sound channels 2 comprise transducers and air channels, the air inlets 201 of the air channels of the plurality of branch sound channels 2 are respectively communicated with the internal closed chamber, and the air outlets of the air channels are communicated with the air outlet 102 of the shell 1.

And the input end of the control board 5 is connected with the output ends of the transducers of the branch sound channels 2, and is used for acquiring the measured values of the branch sound channels 2 and obtaining the measured result of the detection sound channel. The control board 5 compares the collected measurement values, and determines that the branch channel 2 is in an abnormal state if one or more of the measurement values of the branch channel 2 exceeds a predetermined range of other measurement values. Adding the measurement values of each branch sound channel 2 to obtain a measurement result under the condition that the branch sound channels 2 are judged to be in a normal state; when the plurality of branch sound channels 2 are judged to be in the abnormal state, the measurement values of the branch sound channels 2 which normally work are weighted and averaged, and then the number of the branch sound channels 2 is multiplied to obtain the measurement result. By inquiring and judging the working state of the transducer, when the transducer is abnormal, the measurement data of normal work is utilized to convert and compensate the measurement data of the whole meter, thereby greatly improving the measurement reliability of the ultrasonic gas meter.

In the above embodiment, a plurality of parallel branch sound channels 2 are arranged in the ultrasonic gas meter to perform synchronous measurement, and the purpose is to form at least more than two branch sound channels 2 in the ultrasonic gas meter, that is, a plurality of transducers are arranged in the ultrasonic gas meter, if the transducers have faults, the ultrasonic gas meter can also perform normal measurement, and the accuracy of the ultrasonic gas meter is further ensured. The ultrasonic gas meter can be used for providing guarantee for normal metering of the ultrasonic gas meter, avoiding the condition of meter leakage caused by damage of the transducer and reducing the economic loss of a gas company.

In other preferred embodiments, referring to fig. 5, 6, 7 and 8, the ultrasonic gas meter further includes a connecting piece 4, where the connecting piece 4 is disposed between the gas outlet of the gas passage and the gas outlet 102 of the housing 1, and is used for communicating the gas outlet of the gas passage and the gas outlet 102 of the housing 1; the air inlets 201 of the air passages of the plurality of branch sound channels 2 are respectively communicated with the internal closed chamber 103, the air outlets thereof are respectively communicated with the air inlet of the connecting piece 4, and the air outlet of the connecting piece 4 is communicated with the air outlet 102 of the shell 1 to form a plurality of parallel branch sound channels 2; the gas enters the internal closed chamber 103 from the gas inlet 101 of the housing 1, passes through the sound channels of the plurality of branch sound channels 2, is merged in the connecting piece 4, and flows out from the gas outlet 102 of the housing 1.

In other preferred embodiments, referring to fig. 5, 6, 7 and 8, the connecting piece 4 is a variable diameter connecting channel, the connecting channel includes a first member 401 and a second member 402, the inner diameter of the first member 401 is larger than the inner diameter of the second member 402, wherein the size of one end of the first member 401 matches the size of the plurality of air passages for communicating the air outlets of the air passages of the plurality of branch sound passages 2. The first member 401 is connected with the air outlet of the air passage in a sealing way by adopting an O-shaped ring. The second member 402 is a cylindrical member.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the drawings respectively include two branch sound channels 2, the inner diameter of the air inlet of the connecting piece 4 is matched with the outer diameters of the air outlets of the two branch sound channels 2, the air inlet of the connecting piece 4 is sleeved on the air outlets of the two branch sound channels 2 and connected into a whole, and the air inlet of the connecting piece 4 is hermetically connected with the air outlets of the two branch sound channels 2 by an O-ring; the air outlet of the connecting element 4 is connected to the air outlet 102 of the housing 1, and the direction indicated by the arrows in fig. 5, 6, 7 and 8 is that the fuel gas enters from the inlets of the branch sound channels 2, passes through the air channels of the two branch sound channels 2, and then is discharged from the air outlet of the connecting element 4. In other embodiments, referring to fig. 1, 2, 3 and 4, a schematic structural diagram of the two-channel connector 4 is provided, and the connectors 4 used in other multi-channel combinations have the same structural form and function, except that the size of the connectors 4 and the number of air inlets are different.

In other preferred embodiments, the first member 401 tapers from one end to the other with an inner diameter that matches the inner diameter of the second member 402.

In other partially preferred embodiments, as shown in fig. 3, 4, 7 and 8, the first member 401 is connected to the second member 402 to form an L-shaped channel. In the specific installation process, the plurality of branch sound channels 2 are horizontally installed in the internal closed chamber 103, and the air inlets 201 of the air channels are horizontally arranged.

In other partially preferred embodiments, as shown in fig. 1, 2, 5 and 6, the first member 401 and the second member 402 are connected to form a linear channel. In the specific installation process, a plurality of branch sound channels 2 are vertically installed in the internal closed chamber 103, and the air inlets 201 of the air channels are vertically arranged.

In the above embodiment, a plurality of parallel branch sound channels 2 are arranged in the ultrasonic gas meter to perform synchronous measurement, and the purpose is to form at least more than two branch sound channels 2 in the ultrasonic gas meter, that is, a plurality of transducers are arranged in the ultrasonic gas meter, if the transducers have faults, the ultrasonic gas meter can also perform normal measurement, and the accuracy of the ultrasonic gas meter is further ensured. The ultrasonic gas meter can be used for providing guarantee for normal metering of the ultrasonic gas meter, avoiding the condition of meter leakage caused by damage of the transducer and reducing the economic loss of a gas company.

In a specific embodiment, referring to fig. 9, an internal structure of a multi-channel ultrasonic gas meter includes a control board 5 and an ultrasonic time measurement module 601; the control panel 5 comprises an MCU501, a display module 505, a power supply and detection module 502, a data storage module 503 and a safety function module 516; the detection sound channel comprises an ultrasonic time measurement module 601; the ultrasonic time measurement module 601 is used for detecting and calculating the forward flow and backward flow propagation time of the ultrasonic wave.

Referring to the schematic circuit diagram of the ultrasonic horological module 601 shown in fig. 11; the input end of the ultrasonic time measurement module 601 is connected with the output ends of the upstream transducer and the downstream transducer of each branch sound channel 2, and the detection data acquired by the upstream transducer and the downstream transducer is input to the ultrasonic time measurement module 601; the output end of the ultrasonic time measurement module 601 is connected with the input end of the MCU501, the ultrasonic time measurement module 601 calculates the downstream and upstream propagation time of ultrasonic waves according to the acquired detection data, and then the downstream and upstream propagation time data of the ultrasonic waves are input to the MCU 501. Referring to a circuit schematic diagram of the MCU501 shown in fig. 11; the MCU501 is used for reading the time detected by the ultrasonic timing module, further calculating the gas flow rate and the volume flow, and displaying the gas flow rate and the volume flow by the display module 505 to complete the metering function; the MCU501 reads the measurement value of each branch channel 2, compares the measurement values, determines that the branch channel 2 is in an abnormal state if one or more of the measurement values of the branch channel 2 exceed a predetermined range of other measurement values, and obtains a final measurement result by calculation.

Referring to the schematic circuit diagram of the display module 505 shown in fig. 12, an input terminal of the display module 505 is connected to an output terminal of the MCU501 for displaying the measurement data.

Referring to the schematic circuit diagram of the power supply and detection module 502 shown in fig. 15, the output terminal of the power supply and detection module is connected to the output terminal of the MCU501 for providing power supply and power supply voltage detection.

Referring to the schematic circuit diagram of the data storage module 503 shown in fig. 14, an input end and an output end of the data storage module 503 are respectively connected to an output end and an input end of the MCU 501; the method is used for storing the metering data, the correction coefficient and the working state in the record table of the flowmeter device, and all data are stored in a cross backup mode, so that the traceability of the data is ensured. The erasing frequency of the data storage module 503 is more than or equal to 100 ten thousand times, and the effective time of the data is more than or equal to 40 years.

The safety function module 516 comprises a leakage alarm module/a vibration sensing detection module, and the output ends of the leakage alarm module and the vibration sensing detection module are connected with the input end of the MCU501 and are used for detecting abnormal flow, wherein the abnormal flow refers to overlarge flow, ultra-small flow and constant-current overtime use, so that the use safety of the device is ensured; and the abnormal flow detection has higher response speed. In other embodiments, a leak alarm function may also be optionally incorporated. The matching safety function module also comprises a leakage alarm module which is used for detecting whether leakage occurs in the pipeline and sending an alarm signal.

Referring to the circuit schematic diagram of the valve control module 504 shown in fig. 17, the input end of the valve control module 504 is connected to the output end of the MCU501, and is used to control the opening and closing of the valve in the pipeline.

Referring to fig. 13, a schematic circuit diagram of the internet of things communication module 506 is shown; the input end and the output end of the internet of things communication module 506 are connected with the output end and the input end of the MCU 501. The input end of the internet of things communication module 506 is connected with the output ends of the GPRS module 510, the 4G module 511, the NB-IoT module 512 and the LoRa module 513 respectively, and the output end of the internet of things communication module 506 is connected with the input ends of the GPRS module 510, the 4G module 511, the NB-IoT module 512 and the LoRa module 513 respectively. The internet of things communication module 506 is a wireless communication module, and can wirelessly and remotely control the valve and adjust the price.

Referring to the circuit schematic of the card control module 507 shown in fig. 16; the input end of the card control module 507 is connected with the output ends of the MCU501, the logic encryption card 508, the CPU card 509, the ESAM module 514 and the contactless card 515, respectively, and the output end of the card control module 507 is connected with the input ends of the logic encryption card 508, the CPU card 509, the ESAM module 514 and the contactless card 515, respectively. For pre-pay.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims (9)

1. A multi-channel ultrasonic gas meter is characterized by comprising:

a housing having an interior enclosed chamber; the shell is provided with an air inlet and an air outlet, and the air inlet is communicated with the internal closed cavity;

a detection acoustic channel disposed within the interior enclosed chamber;

the detection sound channel is formed by connecting a plurality of branch sound channels in parallel and is used for detecting the instantaneous flow of the fuel gas; the instantaneous flow value of the gas is equal to the sum of the measured values of the plurality of branch sound channels;

the branch sound channels comprise energy converters and air channels, air inlets of the air channels of the branch sound channels are respectively communicated with the internal closed chamber, and air outlets of the air channels are communicated with the air outlet of the shell;

and the input end of the control board is connected with the output ends of the transducers of the branch sound channels, and the control board is used for acquiring the measured values of the branch sound channels and obtaining the measured result of the detection sound channel.

2. The multi-channel ultrasonic gas meter according to claim 1,

the connecting piece is arranged between the air outlet of the air passage and the air outlet of the shell and is used for communicating the air outlet of the air passage with the air outlet of the shell;

the gas outlets of the gas passages of the plurality of branch sound channels are respectively communicated with the gas inlet of the connecting piece, and the gas outlet of the connecting piece is communicated with the gas outlet of the gas meter to form a plurality of parallel branch sound channels; the gas respectively enters the internal closed chamber from the gas inlet of the shell, is converged in the connecting piece through the plurality of branch sound channels, and flows out from the gas outlet of the shell.

3. The multi-channel ultrasonic gas meter according to claim 2, wherein the connecting member is a variable diameter connecting channel, the connecting channel comprises a first member and a second member, the inner diameter of the first member is larger than that of the second member, and the size of one end of the first member matches the size of the plurality of air channels and is used for communicating the air outlets of the air channels of the plurality of branch channels; the second member is a cylindrical member.

4. The multi-channel ultrasonic gas meter according to claim 3, wherein the first member is connected with the gas outlet of the gas channel by an O-ring seal.

5. The multi-channel ultrasonic gas meter according to claim 3, wherein the first member has an inner diameter gradually decreasing from one end to the other end, and the inner diameter of the other end matches the inner diameter of the second member.

6. The multi-channel ultrasonic gas meter according to claim 3, wherein the first member and the second member are connected to form an L-shaped channel.

7. The multi-channel ultrasonic gas meter according to claim 3, wherein the first member and the second member are connected to form a straight passage.

8. The ultrasonic gas meter with multiple channels according to claim 1, wherein the internal structure of the ultrasonic gas meter comprises the control board and an ultrasonic time measurement module;

the control panel comprises an MCU and a display module;

the detection sound channel comprises the ultrasonic time measurement module; the ultrasonic time measurement module is used for detecting and calculating the forward flow and backward flow propagation time of ultrasonic waves;

the output end of the transducer of each branch sound channel is connected with the input end of the ultrasonic time measurement module, and the transducer feeds back acquired detection data to the ultrasonic time measurement module; the output end of the ultrasonic time measurement module is connected with the input end of the MCU, the ultrasonic time measurement module obtains detection time through the detection data and feeds the detection time back to the MCU, the MCU obtains a gas instantaneous flow value of each branch sound channel through the detection time and compares a plurality of measurement values, if one or more branch sound channel measurement values exceed a set range of other measurement values, the branch sound channel is judged to be in an abnormal state, and a final measurement result is obtained through calculation.

9. The multi-channel ultrasonic gas meter according to claim 8, wherein the control board further comprises a power supply and detection module and a data storage module;

the output end of the power supply and detection module is connected with the input end of the MCU and used for providing power supply and power supply voltage detection;

the output end and the input end of the data storage module are respectively connected with the input end and the output end of the MCU and used for storing metering data, correction coefficients and working states in a record table, all data are stored in a cross backup mode, and traceability of the data is guaranteed.

Images