CN111060225A - Large-caliber ultrasonic heat meter synchronous method verification method, system and device - Google Patents
Large-caliber ultrasonic heat meter synchronous method verification method, system and device Download PDFInfo
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- CN111060225A CN111060225A CN201911420518.XA CN201911420518A CN111060225A CN 111060225 A CN111060225 A CN 111060225A CN 201911420518 A CN201911420518 A CN 201911420518A CN 111060225 A CN111060225 A CN 111060225A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K19/00—Testing or calibrating calorimeters
Abstract
The invention provides a method, a system and a device for calibrating a large-aperture ultrasonic heat meter, wherein the method comprises the steps of sequentially obtaining two accumulated flows of a plurality of standard meters in two different time periods and calculating the final accumulated flow of the standard meters; the method comprises the steps of simultaneously obtaining two times of accumulated flows of a plurality of measured tables in two different time periods and calculating the final accumulated flow of the measured tables; the system comprises an acquisition module and an upper computer, the device comprises a standard meter and a measured meter which are sequentially connected with a flow regulating mechanism and a pressure stabilizing mechanism through pipelines, and communication modules used for uploading accumulated flow are arranged on the standard meter and the measured meter. The invention adopts automatic acquisition, automatic operation verification process and automatic program calculation judgment, thereby achieving accurate automatic measurement, doubling production benefit and sensitively reflecting and detecting various factors influencing measurement.
Description
Technical Field
The invention relates to the technical field of ultrasonic heat meters, in particular to a method, a system and a device for synchronously calibrating a large-caliber ultrasonic heat meter.
Background
The ultrasonic heat meter is a heat metering instrument developed based on an ultrasonic measuring technology, and is connected in series with a heat distribution pipeline in a user room during use, a pair of ultrasonic sensors arranged on a heat meter pipe fitting are used for collecting flow velocity signals, a pair of temperature sensors respectively arranged on a hot water inlet pipeline (generally arranged on the heat meter pipe fitting) and a return water pipeline after heat exchange are used for collecting temperature difference signals, the collected flow velocity signals and the collected temperature difference signals are sent to a data processing unit in the meter body for comprehensive processing, and finally the heat value used by the user is obtained.
At present, the large-caliber ultrasonic heat meter verification adopts manual operation, semi-manual operation, manual recording or manual calculation in the industry, the automation degree is low, the process is manually operated, and errors are easy to occur.
Disclosure of Invention
The invention provides a method, a system and a device for calibrating a large-caliber ultrasonic heat meter by a synchronous method.
In order to solve the technical problems, the invention adopts the following technical scheme:
a large-caliber ultrasonic heat meter synchronous method calibration method comprises the following steps:
sequentially acquiring two times of accumulated flows of a plurality of standard tables in two different time periods and calculating the final accumulated flow of the standard tables;
the method comprises the steps of simultaneously obtaining two times of accumulated flows of a plurality of measured tables in two different time periods and calculating the final accumulated flow of the measured tables;
and calculating the final accumulated flow of the standard table and the final accumulated flow of the measured table to obtain errors, and correcting the standard table according to the errors.
Further, the specific method for sequentially obtaining two accumulated flows of the plurality of standard tables in two different time periods and calculating the final accumulated flow of the standard tables includes:
s1, first obtaining the first cumulative flow of a single standard table, and obtaining the second cumulative flow of the standard table again after a specified interval time;
s2, when the standard table finishes the acquisition of the two accumulated flows, acquiring the two accumulated flows of the next standard table until all the accumulated flows of all the standard tables are acquired;
and S3, adding the two accumulated flows of all the standard tables to obtain the final accumulated flow of the standard tables.
Further, the specific method for simultaneously obtaining two accumulated flows of the multiple measured tables in two different time periods and calculating the final accumulated flow of the measured tables includes:
s1, first, acquiring the first cumulative flow of the plurality of measured tables at the same time, and acquiring the second cumulative flow of the plurality of measured tables again after a specified interval;
and S2, adding the two accumulated flows of all the measured tables to obtain the final accumulated flow of the measured tables.
Further, the calculation formula of calculating the final accumulated flow rate delStd of the standard table and the final accumulated flow rate delAcc of the measured table to obtain the Error is as follows:
Error=(delAcc-delStd)*100/delStd。
a large-caliber ultrasonic heat meter synchronous method verification system comprises:
the acquisition module is used for acquiring the two-time accumulated flow of the standard meter and the measured meter and uploading the two-time accumulated flow to the upper computer;
and the upper computer is used for calculating the final accumulated flow of the measured meter and the final accumulated flow of the standard meter, calculating errors and then correcting the standard meter according to the errors.
The calibrating device is characterized by comprising a standard meter and a tested meter which are sequentially connected with a flow regulating mechanism and a pressure stabilizing mechanism through pipelines, wherein the standard meter and the tested meter are provided with communication modules for uploading accumulated flow.
Further, the communication module adopts a multi-serial-port card.
Further, the flow regulating mechanism comprises a frequency converter and a pump, wherein the frequency converter is connected with the pump through a pipeline, and the pump is connected with the pressure stabilizing mechanism through a pipeline.
Further, the pressure stabilizing mechanism comprises an air compressor and a pressure stabilizing tank, the air compressor is connected with the pressure stabilizing tank through an air pipe, and the pressure stabilizing tank is connected with the standard meter through a pipeline.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts automatic acquisition, automatic operation verification process and automatic program calculation judgment, thereby achieving accurate automatic measurement, doubling production benefit, sensitively reflecting and detecting various factors influencing measurement, and conveniently achieving brand new height in yield and quality.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a view showing the structure of the apparatus of the present invention.
Detailed Description
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a method for calibrating a large-caliber ultrasonic heat meter by a synchronous method comprises the following steps:
step one, acquiring a first cumulative flow of a single standard table, acquiring a second cumulative flow of the standard table again after a specified interval time, acquiring two cumulative flows of a next standard table after the standard table finishes acquiring the two cumulative flows until the cumulative flows of all the standard tables are all acquired, and adding the two cumulative flows (after error compensation) of all the standard tables to obtain a final cumulative flow of the standard table;
step two, simultaneously acquiring first accumulated flow rates of a plurality of measured tables (namely ultrasonic heat meters), acquiring second accumulated flow rates of the plurality of measured tables again after a specified interval time, and adding the two accumulated flow rates of all the measured tables to obtain final accumulated flow rates of the measured tables;
and step three, calculating the final accumulated flow rate delStd of the standard table and the final accumulated flow rate delAcc of the measured table to obtain an Error, correcting the standard table according to the Error, and calculating a formula Error = (delAcc-delStd) × 100/delStd.
A large-caliber ultrasonic heat meter synchronous method verification system comprises:
the acquisition module is used for acquiring the two-time accumulated flow of the standard meter and the measured meter and uploading the two-time accumulated flow to the upper computer;
and the upper computer is used for calculating the final accumulated flow of the measured meter and the final accumulated flow of the standard meter, calculating errors and then correcting the standard meter according to the errors.
As shown in FIG. 2, a large-caliber ultrasonic heat meter calibrating device comprises a standard meter 3 and a measured meter 4 which are sequentially connected with a flow regulating mechanism 1 and a pressure stabilizing mechanism 2 through pipelines, the flow regulating mechanism comprises a frequency converter 101 and a pump 102, the frequency converter is connected with the pump through a pipeline, the pump is connected with the pressure stabilizing mechanism through a pipeline, the flow regulating mechanism is used for controlling the size of each flow point, the pressure stabilizing mechanism 2 comprises an air compressor 201 and a pressure stabilizing tank 202, the air compressor is connected with the pressure stabilizing tank through an air pipe, the pressure stabilizing tank is connected with the standard meter through a pipeline, the pressure can be regulated through the pressure stabilizing tank and the air compressor to ensure the stability of the flow, communication modules are arranged on the standard meter and the measured meter, the communication modules adopt MOXA multi-serial port cards, each serial port card provides 8 serial ports, the frequency converter and the standard meter adopt an RS485 communication protocol to communicate with an upper computer, the standard meter obtains an, the method comprises the steps of acquiring accumulated flow of two different time periods, uploading the accumulated flow to an upper computer, communicating a frequency converter with an upper computer by adopting an MODBUS communication protocol, communicating a measured meter with the upper computer by adopting an optical interface and a CJ/T188 protocol, acquiring signals of the upper computer by the measured meter, and uploading the accumulated flow of the two different time periods to the upper computer.
The working process is as follows:
the upper computer sends request data information to a standard table required by the flow point one by one, a fixed time interval is set between two requests, and the Boolean quantity is set to indicate whether a reply is received or not, and the next request is continued until the reply of the previous standard table is received, after all the standard tables required by a certain flow point effectively return data, accumulating the accumulated flow (after error compensation) of each standard table as the final accumulated flow of the standard table, arranging a thread (thread) for sending request information for each measured table, processing the transceiving data of the measured table at the same time, and simultaneously acquiring first accumulated flow of the plurality of measured tables and second accumulated flow of the plurality of measured tables after a specified interval time, accumulating the accumulated flow of each measured table to obtain final accumulated flow of the measured table, calculating the final accumulated flow of the measured table and the final accumulated flow of the standard table, calculating errors, and correcting the standard table according to the errors.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (9)
1. A large-caliber ultrasonic heat meter synchronous method calibration method is characterized by comprising the following steps:
sequentially acquiring two times of accumulated flows of a plurality of standard tables in two different time periods and calculating the final accumulated flow of the standard tables;
the method comprises the steps of simultaneously obtaining two times of accumulated flows of a plurality of measured tables in two different time periods and calculating the final accumulated flow of the measured tables;
and calculating the final accumulated flow of the standard table and the final accumulated flow of the measured table to obtain errors, and correcting the standard table according to the errors.
2. The large-caliber ultrasonic heat meter synchronous method verification method according to claim 1, wherein the specific method for sequentially obtaining two times of accumulated flow of a plurality of standard meters in two different time periods and calculating the final accumulated flow of the standard meters comprises the following steps:
s1, first obtaining the first cumulative flow of a single standard table, and obtaining the second cumulative flow of the standard table again after a specified interval time;
s2, when the standard table finishes the acquisition of the two accumulated flows, acquiring the two accumulated flows of the next standard table until all the accumulated flows of all the standard tables are acquired;
and S3, adding the two accumulated flows of all the standard tables to obtain the final accumulated flow of the standard tables.
3. The method for synchronously calibrating the large-caliber ultrasonic heat meters, according to claim 1, is characterized in that the specific method for simultaneously obtaining two accumulated flows of a plurality of measured meters in two different time periods and calculating the final accumulated flow of the measured meters comprises the following steps:
s1, first, acquiring the first cumulative flow of the plurality of measured tables at the same time, and acquiring the second cumulative flow of the plurality of measured tables again after a specified interval;
and S2, adding the two accumulated flows of all the measured tables to obtain the final accumulated flow of the measured tables.
4. The synchronous method for calibrating the large-caliber ultrasonic heat meter as claimed in claim 1, wherein the Error is calculated by the formula of calculating the final accumulated flow delStd of the standard meter and the final accumulated flow delAcc of the measured meter as follows:
Error=(delAcc-delStd)*100/delStd。
5. the utility model provides a large-diameter ultrasonic wave heat meter synchronization method verification system which characterized in that includes:
the acquisition module is used for acquiring the two-time accumulated flow of the standard meter and the measured meter and uploading the two-time accumulated flow to the upper computer;
and the upper computer is used for calculating the final accumulated flow of the measured meter and the final accumulated flow of the standard meter, calculating errors and then correcting the standard meter according to the errors.
6. The calibrating device is characterized by comprising a standard meter and a tested meter which are sequentially connected with a flow regulating mechanism and a pressure stabilizing mechanism through pipelines, wherein the standard meter and the tested meter are provided with communication modules for uploading accumulated flow.
7. The large-caliber ultrasonic calorimeter synchrony method calibration device of claim 6, wherein the communication module employs a multi-serial port card.
8. The large-caliber ultrasonic calorimeter synchronous method calibrating device according to claim 6, wherein the flow regulating mechanism comprises a frequency converter and a pump, the frequency converter is connected with the pump through a pipeline, and the pump is connected with the pressure stabilizing mechanism through a pipeline.
9. The large-caliber ultrasonic heat meter synchronization method calibrating device according to claim 6, wherein the pressure stabilizing mechanism comprises an air compressor and a pressure stabilizing tank, the air compressor is connected with the pressure stabilizing tank through an air pipe, and the pressure stabilizing tank is connected with the standard meter through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911420518.XA CN111060225A (en) | 2019-12-31 | 2019-12-31 | Large-caliber ultrasonic heat meter synchronous method verification method, system and device |
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| CN201911420518.XA CN111060225A (en) | 2019-12-31 | 2019-12-31 | Large-caliber ultrasonic heat meter synchronous method verification method, system and device |
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| CN111060225A true CN111060225A (en) | 2020-04-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201885833U (en) * | 2010-06-18 | 2011-06-29 | 徐州润物科技发展有限公司 | Heat meter calibrating device |
| CN202210005U (en) * | 2011-08-17 | 2012-05-02 | 安徽汉威电子有限公司 | Heat energy meter flow full-automatic detection device |
| CN102889915A (en) * | 2012-07-26 | 2013-01-23 | 浙江省计量科学研究院 | Flowmeter and calorimeter asynchronous metering and detecting method and flowmeter and calorimeter asynchronous metering and detecting system based on communication |
| CN107677395A (en) * | 2017-11-07 | 2018-02-09 | 北京市计量检测科学研究院 | Heavy caliber flow verification system and calibration method |
-
2019
- 2019-12-31 CN CN201911420518.XA patent/CN111060225A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201885833U (en) * | 2010-06-18 | 2011-06-29 | 徐州润物科技发展有限公司 | Heat meter calibrating device |
| CN202210005U (en) * | 2011-08-17 | 2012-05-02 | 安徽汉威电子有限公司 | Heat energy meter flow full-automatic detection device |
| CN102889915A (en) * | 2012-07-26 | 2013-01-23 | 浙江省计量科学研究院 | Flowmeter and calorimeter asynchronous metering and detecting method and flowmeter and calorimeter asynchronous metering and detecting system based on communication |
| CN107677395A (en) * | 2017-11-07 | 2018-02-09 | 北京市计量检测科学研究院 | Heavy caliber flow verification system and calibration method |
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Application publication date: 20200424 |
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