Study on Flow Coefficient and Static Performances of Gas Pressure Regulators
|Course||Heating,Gas Supply, Ventilation and Air Conditioning Engineering|
|Keywords||Gas regulator Flow coefficient Static characteristics|
With the continuous development of the progress of urban modernization and gas fuel resources , the gas industry is growing . The cause of the development of gas conducive to environmental protection , energy conservation , and promotion of industrial and agricultural production and improve the standard of living of the people , has significant social , economic and environmental benefits . The gas from the gas source to the end users need to go through some of the transmission and distribution systems , transmission and distribution to be involved in gas from high pressure to low pressure regulator , which need to adjust the gas from the high pressure - low-voltage equipment , that is, the gas regulator . The the standard CJ 274 \Gas regulator flow coefficient and static characteristics of standard terms related to the underlying performance of the gas regulator . This article is a study of these two aspects . Gas regulator flow coefficient describing the flow capacity of the gas regulator , the article focuses on the origin of the gas regulator flow coefficient derived after expounded several gas regulator flow formula , and finally for the gas the practical application of the regulator flow coefficient established experimental device , test the two modes of action of the gas regulator , gas regulator flow coefficient proved by experiments for direct -acting gas regulator NA , for the indirect -acting regulator is applicable . Static characterization of gas regulator outlet pressure of the gas regulator changes with the flow or inlet pressure . Static characteristic test of the flow characteristics and pressure characteristics of the test and the additional pressure characteristics test three test methods , on the basis of the well - known three characteristics test method to establish the experimental setup , the regulator of the four types of test experiments characteristics Test Methods of the proof flow characteristics compared to the test methods pressure is easier to meet the level required regulation accuracy , the response characteristics of the pressure characteristics of the test method and the additional pressure test characteristic method is consistent with the , supplemental pressure characteristic test method by adjusting the flow rate regulating valve to maintain a constant flow of and increase unnecessary trouble for the conduct of the test .