T/CMA YJ051-2021 Active Group standards

T/CMA YJ051-2021 The technical requirements for measuring the flow of mixed gas

Publish Date: 2021-04-01 Implement Date: 2021-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CMA YJ051-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: \nBasic standards

ICS Name: The comprehensive measurement of fluid flow

Publish Date: 2021-04-01

Implement Date: 2021-05-01

Scope

Main Technical Content: **Scope of Application and Main Technical Content**: **Scope of Application of This Standard**: This standard applies to the volume and energy measurement of artificial gas (including coke oven gas, blast furnace gas, converter gas, etc.) and natural gas mixed with artificial gas. **Main Content of This Standard**: This standard provides a basis for metallurgical, coking, and other energy-consuming enterprises to measure the flow of artificial gas (including coke oven gas, blast furnace gas, converter gas, etc.) and natural gas mixed with artificial gas. **Main Technical Content**: 1. **Standard Reference Conditions**: - The standard reference conditions for volume flow measurement of mixed gas and heat value measurement of natural gas are: absolute pressure equal to 101.325 kPa and thermodynamic temperature equal to 293.15 K. Contractual pressure and contractual temperature can also be used as reference conditions. 2. **Recommendations for the Selection, Installation, and Use of Flowmeters for Natural Gas, Artificial Gas, and Mixed Gas Flow Measurement**: - Standard orifice flowmeters: orifice plates, nozzles, and Venturi tubes. - Insertion flowmeters based on the Pitot static pressure tube principle using the velocity-area method. 3. **Analysis and Calculation Methods for Physical Properties Parameters of the Above-mentioned Gases**: - **Determination of Physical Properties Parameters**: - **Calculation of Physical Properties Parameters**: - Calculation of physical properties parameters under standard reference conditions. - Calculation of physical properties parameters under operating conditions (including calculation of physical properties values for wet gases). 4. **Flow Calculation**: - Calculation of volume flow under operating conditions. - Calculation of volume flow under standard reference conditions. - Calculation of energy flow under standard reference conditions (to create conditi