CN219064730U - Online calibrating device for large-caliber calorimeter - Google Patents
Online calibrating device for large-caliber calorimeter Download PDFInfo
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- CN219064730U CN219064730U CN202222387298.9U CN202222387298U CN219064730U CN 219064730 U CN219064730 U CN 219064730U CN 202222387298 U CN202222387298 U CN 202222387298U CN 219064730 U CN219064730 U CN 219064730U
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Abstract
The utility model relates to an online calibration device for a large-caliber heat meter, which is characterized in that a portable flow tester, a portable constant temperature tank and a portable high-precision temperature measuring instrument are additionally provided with output ports, an integrator calculator is used for processing acquired signals to calculate heat values, instantaneous flow data, accumulated flow data, heat data and temperature difference data of each large-caliber heat meter in a flow state when working on a working condition pipeline can be accurately captured, the accurate calibration of the large-caliber heat is always blank, the traditional calibration mode is excessively fuzzy, the influence of the objective environment and conditions is caused by the calibration, and the accuracy is always in a ambiguous state. Under the condition of flow in working conditions, the water temperature and the flow speed are not absolutely stable and can change in real time along with the working conditions, the device can process data in real time with zero error, uncertain factors in the traditional mode are not existed, and the accuracy of the on-line calibration data processing result of the large-caliber calorimeter is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of heat meter calibration, in particular to an online calibration device for a large-caliber heat meter.
Background
In foreign terms, such as denmark and germany, the mode of realizing periodic verification on the large-caliber calorimeter adopts a spot check mode, namely, a plurality of heat meters are randomly disassembled as representative and sent to a metering department for verification, but the foreign water quality and the mounting environment of the heat meters are far better than those in China, so that the influence of environmental factors on the heat meters is small, and the qualification rate is high.
In the country, the pipeline of the heat meter is affected by water quality and the like, and the pipeline inner side of the pipeline is corroded for a long time, so that scaling, blockage, damage to a reflecting surface and the like are caused, the metering performance of the meter is seriously affected, meanwhile, difficulty is brought to disassembly and inspection of the meter, disassembly cost is generated, and impurities in the meter can damage a metering department device, so that the on-line measurement is generally adopted in the country, the on-line measurement heat meter becomes a main development trend of a domestic future detection market, and along with the development of portable flow and temperature detection equipment, strong guarantee is provided for on-line measurement.
Because of the difficult disassembly of the large-caliber calorimeter, high disassembly and assembly cost, inconvenient transportation and the like, only an online calibration project of the calorimeter is developed in the Ji region of Beijing, ji, which is a region of Ji, of the large-caliber calorimeter at present. However, due to the limitation of the device, the heat meter detection capability is limited to a non-imported heat meter with the caliber smaller than DN200, but on-line calibration is difficult for some heat meters with ultra-large calibers (such as heat meters with caliber larger than DN 300).
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides an online calibration device for a large-caliber calorimeter, wherein a portable flow tester, a portable constant temperature tank and a portable high-precision thermometer are additionally provided with output ports, an integrator calculator is adopted to process acquired signals and then calculate a heat value, and the online flow, temperature difference and heat error measurement and calibration of the calorimeter are realized, so that the online calibration function of the calorimeter is realized.
The utility model solves the technical problems by adopting the following technical scheme:
the large-caliber heat meter online calibration device is connected with a measured heat meter and comprises temperature calibration equipment, data processing equipment and flow calibration equipment, wherein the temperature calibration equipment is connected with the data processing equipment and used for providing a temperature value, and the flow calibration equipment is connected with the data processing equipment and used for providing a flow value.
And moreover, the temperature calibration equipment comprises a constant temperature tank, a platinum resistor and a high-precision thermometer, wherein the platinum resistor is connected with the input end of the high-precision thermometer, the platinum resistor is inserted into the constant temperature tank, and the output end of the high-precision thermometer is connected with a first data interface of the data processing equipment and is used for transmitting temperature values.
Moreover, the platinum resistor is an industrial platinum resistor.
And the flow calibration device comprises a flow tester, a first ultrasonic transducer of the flow tester and a second ultrasonic transducer of the flow tester, wherein the output ends of the first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are connected with the input end of the flow tester, and the output end of the flow tester is connected with a second data interface of the data processing device for transmitting the flow value.
And the first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are respectively arranged at two ends of the pipe network, and the installation positions of the first ultrasonic transducer of the heat meter to be tested and the second ultrasonic transducer of the heat meter to be tested are arranged around the installation positions of the first ultrasonic transducer of the heat meter to be tested.
Moreover, the data processing device employs an integrator calculator comprising a first data interface, a second data interface and a third interface.
And the first data interface is respectively connected with the output end of the high-precision thermometer and the temperature output end of the heat meter to be measured and is used for calculating the temperature error of the output end of the high-precision thermometer and the temperature output end of the heat meter to be measured.
And the second data interface is respectively connected with the output end of the flow tester and the flow output end of the heat meter to be measured and is used for calculating the flow errors of the output end of the flow tester and the flow output end of the heat meter to be measured.
And the third interface is connected with the heat input end of the heat meter to be measured and is used for receiving the heat of the heat meter to be measured, calculating the heat according to the output end of the high-precision temperature measuring instrument and the output end of the flow rate measuring instrument and calculating the heat error of the heat and the heat output end of the heat meter to be measured.
The utility model has the advantages and positive effects that:
the utility model processes the collected signals by the portable flow tester, the portable constant temperature tank and the portable high-precision temperature measurer with newly added output ports, and calculates the heat value by adopting the integrator calculator, so that the instantaneous flow data, the accumulated flow data, the heat data and the temperature difference data of the large-caliber heat meter in the flow state of each working condition on the working condition pipeline can be accurately captured, the accurate calibration of the large-caliber heat is always in blank, the traditional calibration mode is too fuzzy, the influence of the objective environment and the condition is avoided, and the accuracy is always in a state of being ambiguous. Under the condition of flow in working conditions, the water temperature and the flow speed are not absolutely stable and can change in real time along with the working conditions, the device can process data in real time with zero error, uncertain factors in the traditional mode are not existed, and the accuracy of the on-line calibration data processing result of the large-caliber calorimeter is greatly improved.
Drawings
Fig. 1 is a structural diagram of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
Currently, the verification methods of the calorimeter can be classified into component verification, total verification and component combination verification. The component verification mainly comprises three parts of a flow sensor, a temperature sensor and an integrator calculator of the calorimeter; the total quantity verification means that the accumulated heat value measured by the heat meter is directly detected; the component combinations are typically flow meters that detect alone, then temperature sensors and integrators as a whole or temperature sensors alone, and flow sensors and integrators as a whole.
Aiming at the detection method of the calorimeter, the device for realizing the on-line calibration needs to realize the calibration of the flow sensor, the temperature sensor and the caloric value.
The large-caliber heat meter online calibration device is connected with a measured heat meter and comprises temperature calibration equipment, data processing equipment and flow calibration equipment, wherein the temperature calibration equipment is connected with the data processing equipment and used for providing a temperature value, and the flow calibration equipment is connected with the data processing equipment and used for providing a flow value.
As shown in fig. 1, the temperature calibration device comprises a constant temperature tank, an industrial platinum resistor and a high-precision thermometer, wherein the industrial platinum resistor is connected with the input end of the high-precision thermometer, the industrial platinum resistor is inserted into the constant temperature tank, and the output end of the high-precision thermometer is connected with a first data interface of the data processing device and used for transmitting temperature values.
The flow calibration device comprises a flow tester, a first ultrasonic transducer of the flow tester and a second ultrasonic transducer of the flow tester, wherein the output ends of the first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are connected with the input end of the flow tester, and the output end of the flow tester is connected with a second data interface of the data processing device and used for transmitting flow values.
The first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are respectively arranged at two ends of the pipe network, and the installation positions of the first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are arranged around the installation positions of the first ultrasonic transducer of the heat meter to be measured and the second ultrasonic transducer of the heat meter to be measured.
The data processing device employs an integrator calculator comprising a first data interface, a second data interface, and a third interface.
The first data interface is respectively connected with the output end of the high-precision thermometer and the temperature output end of the heat meter to be measured and is used for calculating the temperature error of the output end of the high-precision thermometer and the temperature output end of the heat meter to be measured.
The second data interface is respectively connected with the output end of the flow tester and the flow output end of the heat meter to be measured and is used for calculating the flow errors of the output end of the flow tester and the flow output end of the heat meter to be measured.
The third interface is connected with the heat input end of the heat meter to be measured and is used for receiving the heat of the heat meter to be measured, calculating the heat according to the output end of the high-precision temperature measuring instrument and the output end of the flow rate measuring instrument and calculating the heat error of the heat and the heat output end of the heat meter to be measured.
The application process of the utility model is as follows:
1. and (3) temperature calibration:
the temperature sensor of the heat meter to be measured and the industrial platinum resistor are placed in a constant temperature tank, a first interface of the integrator calculator respectively receives the temperature value transmitted by the high-precision thermometer and the measured temperature value of the heat meter to be measured, the temperature value is measured for multiple times, the average value is respectively calculated, and the average value of the temperature value and the measured temperature value is taken as the difference value to obtain a temperature difference value.
2. Flow calibration:
before flow calibration, pipeline parameters are input into a flow tester, wherein the pipeline parameters comprise pipeline outer diameter D, wall thickness parameter t, pipeline materials, pipeline media and measurement modes, the flow tester calculates the distance between an upstream probe and a downstream probe, the probe is smeared with a coupling agent according to the distance and then fixed, and after a debugging signal is normal, measurement is ready to begin.
The first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are respectively arranged around the installation positions of the first ultrasonic transducer of the heat meter to be measured and the second ultrasonic transducer of the heat meter to be measured, the second interface of the integrator calculator respectively receives the flow value of the flow tester and the measured flow value of the heat meter to be measured, the flow value is measured for a plurality of times, the average value is respectively obtained, and the average value is taken as the difference to obtain the flow difference value.
3. And (3) calibrating heat:
and calculating the temperature value transmitted by the high-precision temperature measuring instrument and the flow value of the flow measuring instrument to obtain a heat value, reading the heat value of the measured heat meter, and taking the difference between the temperature value and the flow value to obtain a heat difference value.
The utility model discloses an online calibration device for a large-caliber calorimeter, which aims at online calibration detection of an undetachable calorimeter in use. The problem that the period verification of the currently used heat meter is difficult to realize is solved, and the blank of the current heat meter on-line calibration is filled. The development of the device belongs to the initial filed of on-line calibration of the calorimeter in China. The project currently creates more than 100 ten thousand yuan of social and economic benefits, completes online calibration of DN100 and more caliber large caliber ultrasonic calorimeters and electromagnetic calorimeters for more than 100 times, serves 40 enterprises, improves production and working efficiency for the enterprises, solves the problems of troublesome disassembly and inspection and difficult reinstallation, reduces the shutdown time of 10-15 days for each enterprise on average, and reduces the economic loss of the enterprises caused by disassembly and inspection.
Meanwhile, under the condition of flow in working conditions, the water temperature and the flow speed are not absolutely stable and can change in real time along with the working conditions, the device can process data in real time with zero error, uncertain factors in the traditional mode are not existed, and the accuracy of the on-line calibration data processing result of the large-caliber calorimeter is greatly improved.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the utility model includes, but is not limited to, the examples described in the detailed description, as other embodiments derived from the technical solutions of the utility model by a person skilled in the art are equally within the scope of the utility model.
Claims (9)
1. The large-caliber heat meter online calibration device is connected with a measured heat meter and is characterized in that: the temperature calibration device is connected with the data processing device and used for providing a temperature value, and the flow calibration device is connected with the data processing device and used for providing a flow value.
2. The large caliber heat meter online calibration apparatus according to claim 1, wherein: the temperature calibration equipment comprises a constant temperature tank, a platinum resistor and a high-precision thermometer, wherein the platinum resistor is connected with the input end of the high-precision thermometer, the platinum resistor is inserted into the constant temperature tank, and the output end of the high-precision thermometer is connected with a first data interface of the data processing equipment and used for transmitting temperature values.
3. The large caliber heat meter online calibration apparatus according to claim 2, wherein: the platinum resistor is an industrial platinum resistor.
4. The large caliber heat meter online calibration apparatus according to claim 1, wherein: the flow calibration device comprises a flow tester, a first ultrasonic transducer of the flow tester and a second ultrasonic transducer of the flow tester, wherein the output ends of the first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are connected with the input end of the flow tester, and the output end of the flow tester is connected with a second data interface of the data processing device and used for transmitting flow values.
5. The on-line calibration device for a large-caliber heat meter according to claim 4, wherein: the first ultrasonic transducer of the flow tester and the second ultrasonic transducer of the flow tester are respectively arranged at two ends of the pipe network, and meanwhile, the installation positions of the first ultrasonic transducer of the heat meter to be tested and the second ultrasonic transducer of the heat meter to be tested are arranged around the installation positions of the first ultrasonic transducer of the heat meter to be tested.
6. The large caliber heat meter online calibration apparatus according to claim 1, wherein: the data processing device employs an integrator calculator comprising a first data interface, a second data interface, and a third interface.
7. The on-line calibration device for a large caliber heat meter according to claim 6, wherein: the first data interface is respectively connected with the output end of the high-precision thermometer and the temperature output end of the heat meter to be measured and is used for calculating the temperature error of the output end of the high-precision thermometer and the temperature output end of the heat meter to be measured.
8. The on-line calibration device for a large caliber heat meter according to claim 6, wherein: the second data interface is respectively connected with the output end of the flow tester and the flow output end of the heat meter to be measured and is used for calculating the flow errors of the output end of the flow tester and the flow output end of the heat meter to be measured.
9. The on-line calibration device for a large caliber heat meter according to claim 6, wherein: the third interface is connected with the heat input end of the heat meter to be measured and is used for receiving the heat of the heat meter to be measured, calculating the heat according to the output end of the high-precision temperature measuring instrument and the output end of the flow rate measuring instrument and calculating the heat error of the heat and the heat output end of the heat meter to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222387298.9U CN219064730U (en) | 2022-09-06 | 2022-09-06 | Online calibrating device for large-caliber calorimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222387298.9U CN219064730U (en) | 2022-09-06 | 2022-09-06 | Online calibrating device for large-caliber calorimeter |
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| Publication Number | Publication Date |
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| CN219064730U true CN219064730U (en) | 2023-05-23 |
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| CN202222387298.9U Active CN219064730U (en) | 2022-09-06 | 2022-09-06 | Online calibrating device for large-caliber calorimeter |
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- 2022-09-06 CN CN202222387298.9U patent/CN219064730U/en active Active
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