Installation Instructions for Natural Gas Flow Meters

Abstract: The installation instruction information of natural gas flow meter is provided by the excellent flow meter and flow meter production and quotation manufacturers. When the natural gas flowmeter adopts the flange connection flowmeter, it should comply with the provisions of Article 2.2.6 of 'Code for Construction and Acceptance of Urban Gas Indoor Engineering' CJJ94-2003. The inner diameter of the gasket should not be smaller than the inner diameter of the pipe, and the outer diameter of the gasket should not hinder the installation of the bolts. Flange gaskets are not allowed. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the installation instructions for natural gas flowmeters. When the natural gas flowmeter adopts the flange connection flowmeter, it should comply with the provisions of Article 2.2.6 of 'Code for Construction and Acceptance of Urban Gas Indoor Engineering' CJJ94-2003. The inner diameter of the gasket should not be smaller than the inner diameter of the pipe, and the outer diameter of the gasket should not hinder the installation of the bolts. Flange gaskets are not allowed to use inclined gaskets or double gaskets. The flowmeter installed outside the user's room should be installed in a protective box. The natural gas flow meter should be installed as close as possible to the position where the riser enters the household. The front pipe of the meter is short to reduce the risk of potential air leakage. In order to reduce the installation cost, the flow meter can be installed in front of the pressure regulator, but it is necessary to consider whether the supply pressure is stable and the supply pressure The large fluctuation has a certain influence on the working life of the flowmeter. Select the common flow rate as 0%-70% of the flowmeter range. Reasonable selection of the corresponding gas flow meter type and specification, especially the lower limit of the gas flow to be measured should be paid special attention. Installation instructions for commercial natural gas flowmeters: When a flowmeter with a rated flow rate of less than 50m3/h is installed at a high position, the distance between the bottom of the meter and the indoor floor should not be less than 1.4m, and the distance between the back of the meter and the wall should not be less than 30mm. When installing, it should be installed on a brick pier or steel bracket with a height of not less than 200mm, and the net distance from the back of the table to the wall should not be less than 50mm. The flowmeter with a rated flow greater than or equal to 50m3/h should be installed on a brick pier or steel bracket with a height of not less than 200mm, and the clear distance behind the meter from the wall should not be less than 150mm; the installation of turbine meters and Roots meters The site, location and elevation shall comply with the provisions of the design documents, and shall be installed according to the direction of the product identification. The horizontal distance between the flowmeter and various cooking appliances and equipment should meet the following requirements: (1) The horizontal clear distance from the metal chimney should not be less than 1.0m, and the horizontal clear distance from the brick chimney should not be less than 800mm. (2) The horizontal clear distance between the stove and the cooking stove, large pot stove, steamer, oven and other gas stoves should not be less than 800mm. (3) The horizontal net distance from the boiler and the hot water boiler should not be less than 1500mm. ⑷ When the horizontal distance between the flowmeter and various cooking appliances and equipment cannot meet the above requirements, heat insulation boards should be added. Installation instructions for industrial natural gas flowmeters: For multiple flowmeters installed in parallel in an industrial enterprise, valves should be installed on the inlet and outlet pipelines of each flowmeter according to the requirements of the design documents; The need for flange, maintenance and meter replacement should not be less than 200mm. The installation site must be ventilated first, and there should be no open flames nearby to ensure safety. Before installation, the valve in front of the meter should be closed to cut off the gas source. If the operation with gas cannot be avoided, a gas mask should be worn if necessary to prevent gas poisoning; and at least 2 or more people should be present during construction. Before installation, check whether the flowmeter is in good condition and whether the model meets the requirements. During installation, if the flow meter has a mechanical counter head, it is prohibited to use it for hoisting. When installing, avoid external stress; do not force the flowmeter into place. Welding operations must not be performed while the flowmeter is in place. When the Roots flowmeter is installed, it must be installed horizontally, otherwise it will affect the flow that needs to be passed or even not gas. Before the hydraulic pressure test of the pipeline, the flowmeter should be detached from the pipeline, and the flowmeter should be installed in place after the pipeline is thoroughly cleaned and dried. A filter must be installed before the flowmeter, especially the turbine and Roots flowmeters. The filter precision is not less than 10μm. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Installation Instructions for Natural Gas Flow Meters'

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