Gas Regulator Specification RTZ-80/0.4A Runfeng Spot Complete
Natural gas is transferred from the trunk line under the jurisdiction of the Natural Gas Pipeline Company to the gas handling system of the gas turbine power plant for processing.
Through the analysis of the pressure drop of the natural gas processing system, when the pressure of the upstream natural gas pipeline network can meet the demand of the gas turbine under various working conditions, the natural gas pressure regulating station should be selected for the natural gas processing system.
Gas surge station is generally divided into several functions according to the different functions of each device.
Typical natural gas surge stations include emergency cut-off pry at entrance, crude separation pry, metering pry, filter pry, heating pry, pressure regulating pry, condensate collection device, release device and control system.
The voltage regulator is selected according to the user. There are three types of gas users, one is resident users, one is commercial users, and the other is industrial users. They have great differences in the choice of regulators. They can not share a regulator. The gas pressure of commercial users and industrial users is usually higher.
When choosing voltage regulator, residents usually choose single circuit voltage regulator. The range of inlet pressure is 0.2 MPa~0.4 MPa, and the range of outlet pressure is 1500 Pa~2000 Pa. When choosing voltage regulator in a design, besides choosing according to the size of flow, the location should also be considered. If the voltage regulator is located in the center of the users in the community, then according to the flow rate, how many large voltage regulators should be selected, and the opening degree of the voltage regulator should be in the range of 70%-90%.
This can not only make the voltage regulator work in good condition, but also ensure the normal operation of downstream residents'pressure during peak gas use. If the position of the voltage regulator has been fixed by the developer, it can only be installed in a corner of the residential area, when selecting the voltage regulator, the pressure in front of the user stove distant from the voltage regulator should be considered not less than 1000Pa. Voltage regulator selection should be larger than the normal size; also in a residential area to take into account the future development scale of the residential area, there must be a certain surplus in the selection of voltage regulator, otherwise the residential area users will increase, the flow of voltage regulator will not meet the peak downstream user gas consumption.
When choosing voltage regulator, commercial users and industrial users generally choose double-circuit regulator. The import pressure range of commercial users is 0.2 MPa~0.4 MPa, the outlet pressure of regulator is 12 000 Pa~16 500 Pa, the import pressure range of industrial users is 0.2 MPa~0.4 MPa, and the outlet pressure of regulator is 20-50 KPa. They usually choose to be placed close to the user, which can reduce the pressure loss caused by distance.
The above is how to choose the regulator according to the different flow rate and users, but no matter what kind of regulator is chosen, the gas regulator cabinet must be equipped with filters, safety release valves, emergency shut-off valves, indicator pressure gauges and other related accessories, so that the regulator has emergency shut-off protection during the process of pressure regulation. With the function of automatic discharge protection under overpressure, the pressure regulating accuracy of the voltage regulator must be controlled in the range of 5%-10%. Its filter device should be equipped with a pressure differential meter, and the filtering accuracy must be controlled in the range of 200 microns. In addition, commercial and commercial users install pressure regulators to compensate for flow errors caused by large pressure difference.
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