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A heat meter verification device

The technology of a verification device and a heat meter is applied in the field of instrument detection and can solve the problem of low accuracy of hot water flow verification.

Inactive Publication Date: 2016-04-13
TIANJIN JIGANG ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a heat meter verification device, which solves the problem of low accuracy of hot water flow verification in the existing heat meter verification device

Method used

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  • A heat meter verification device
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  • A heat meter verification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: Verify the flow rate of the heat meter

[0052] The flow verification system is composed of water circuit, electric circuit and gas circuit. The water circuit is the system verification medium, and the circuit and gas circuit are the control parts of the water circuit. The flow of the waterway is: after opening all the valves, the first pump unit 4 pumps out the water in the water tank 1, then passes through the filter 4 and enters the pressure-stabilizing degassing tank 5, and the water passes through the pressure-stabilizing degassing tank 5 and enters the verification supervisor After the water supply pressure transducer PT in the verification main line adjusts the water to an appropriate pressure, it enters the heat meter to be measured on the card table 7, and then the computer selects the flow test channel for testing; during the comparison method verification, the water passes through The flow test channel enters the commutator 11, and then directly...

Embodiment 2

[0055] Embodiment 2: verify the temperature of heat meter

[0056] Open the temperature verification system in the computer control and processing system to start the verification; insert the standard thermometer STT, STT2 in the constant temperature tank 16; The RS-232 interface connected to the computer, the data tested by the standard thermometer is transmitted to the computer for data processing through the six and a half digit multimeter.

Embodiment 3

[0057] Embodiment 3: Calculator for verifying heat meter

[0058] The hardware of the calculator verification system is consistent with the temperature verification system. By opening and closing the second maintenance manual valve MV2 twice, when the pipeline flow rate is 0, read the final value of the flow rate and heat of the measured meter, and then calculate the error.

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Abstract

The invention provides a calibrating apparatus for a heat meter. The calibrating apparatus solves the problem that the calibrating accuracy of hot water flow is not high in the existing calibrating apparatus for the heat meter. The calibrating apparatus comprises a flow calibrating system, a temperature calibrating system, a calculator calibrating system and a computer control and processing system, wherein a flow sensor of the heat meter is independently calibrated through the flow calibrating system; a pairing temperature sensor of the heat meter is independently calibrated through the temperature calibrating system; the calculator of the heat meter is independently calibrated through the calculator calibrating system; and the flow calibrating system further comprises a flow calibrating control system. According to the calibrating apparatus of the heat meter provided by the invention, the product structure design is reasonable, and the calibrating accuracy is high, so that the calibrating apparatus of the heat meter is suitable for commercial application and promotion.

Description

technical field [0001] The invention relates to the technical field of instrumentation detection, in particular to a heat meter verification device. Background technique [0002] The heat meter is an instrument for calculating heat, which has been widely used in various fields and belongs to the national compulsory verification measuring instrument. For the verification and detection of heat meters, traditional heat meter verification devices mainly rely on separate equipment and manual detection, which is cumbersome and inefficient, and cannot meet the needs of relevant testing departments and production enterprises; patent 201010207456.7 discloses a heat meter verification The device includes a hot water flow standard system, a paired temperature sensor verification system and a calculator verification system. The flow sensor, temperature sensor and calculator can be verified separately, the combination of components can be verified, and the total amount can also be verifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K19/00
Inventor 李玉森郭长永
Owner TIANJIN JIGANG ELECTRONICS SCI & TECH CO LTD
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