Automatic calibrating system for heat meter

Abstract

The invention belongs to a kind of heat meter automatic measuring system, the character lies in: the heating water box supplies water to the measured pipe through frequency conversion pump, electromagnetism flowmeter, valve, there sets a electric heater controlled by standard heat indictor and PID temperature control meter in the water box, there sets a temperature sensor for industrial control machine to collect temperature in the constant temperature slot. The invention use frequency conversion pump, air-actuated control meter, the accuracy of high, the structure is simple, the operation is easy, it can realize quick data collecting and process, and carries on the real-time collecting and calculation to the flow, temperature, and error.

Description

[0001] Field [0002] The invention belongs to a detection device for a thermal system, in particular to an automatic verification system for a heat meter. Background technique [0003] In the prior art, the heat meter is a device for measuring the heat of the heating system. With the introduction of the country's full implementation of the policy of measuring and charging heat supply in 2010, various heat meters have emerged as the times require. According to national standards, all kinds of heat meters should be calibrated and checked for various technical parameters one by one before use, so as to prevent measurement disputes and ensure the smooth implementation of national policies. Therefore, the verification devices of various heat meters are gradually designed, but there are some defects: such as the overall structure of the verification device is relatively complicated, the verification process is cumbersome, the operation time is relatively long, the efficiency is low...

AI Technical Summary

Problems solved by technology

Therefore, the verification devices of various heat meters are gradually designed, but there are some defects: such as the overall structure of the verification device is relatively complicated, the verification process is cumbersome, the operation time is relatively long, the efficiency is low, the error coefficient is relatively large, and the verification results unstable

For example, the automatic standard device for heat meters developed by a domestic company is composed of 8 systems, the structure is quite complex, the accuracy of the calibrated system is greater than 0.1%, the temperature measurement range is only 4-95°C, and the uncertainty of the system flow rate is greater than 0.2 %, the temperature correction error is large, etc., which affect the correct verification of the heat meter to some extent

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