Natural gas flow wireless acquisition front end

Abstract

The invention discloses a natural gas flow wireless acquisition front end. The front end comprises a communication module in butt joint with an intelligent flowmeter for transmitting flow data to an MCU; the MCU used for regulating all modules, receiving data information transmitted by the communication module and integrating the data information; an LORA wireless module used for large-scope transmission of the flow data after integration; a power source used for stabilizing work voltages; a DC / DC converter used for converting output voltages of the power supply so as to match supply voltages of the intelligent flowmeter; and a unified extended interface used for extending connection approaches between the MCU and an external module. According to the invention, the installation position is distanced quite near to the intelligent meter, induction pulses introduced by the length of a connection cable within such a length interval are quite small, and no threats are posed to the intelligent flowmeter; and no batteries are used for power supply, an external power network is unnecessary, the safety performance is high, and pulses are prevented from being introduced by lightning strokes through the power network.

Description

technical field [0001] The invention relates to the field of remote collection of natural gas, in particular to a front end for wireless collection of natural gas flow. Background technique [0002] At present, my country's natural gas resources are not very rich, and the regional distribution of reserves is very uneven. In recent years, with the rapid development of the global economy and the enhancement of the awareness of global environmental protection, the demand for natural gas as the cleanest energy is increasing. It is becoming more and more urgent. In some low-permeability areas of our country, the exploitation of natural gas is also in full swing. If natural gas is exploited in these areas, high-density natural gas wells are required to obtain high natural gas production. Therefore, tens of thousands of natural gas wells are distributed in a county-level administrative region. Due to the large number of wellheads, they may be distributed in deserts. In the Gobi, th...

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Problems solved by technology

If natural gas is exploited in these areas, high-density natural gas wells are required to obtain high natural gas production. Therefore, tens of thousands of natural gas wells are distributed in a county-level administrative region. Due to the large number of wellheads, they may be distributed in deserts. In the Gobi, the inspection is very inconvenient, and the gas field must be managed digitally and networked. Therefore, it is necessary to have a supporting natural gas wellhead data collection and remote transmission system

In the natural gas wellhead data acquisition system in the prior art, the remote terminal control unit RTU (Remote Terminal Unit) collects wellhead oil pressure, casing pressure and natural gas flow data in the natural gas export pipeline through the analog input channel. Due to the limitation of channels, it is impossible to complete data collection for equipment above four cluster well groups. Moreover, the natural gas wellhead data collection system in the prior art still has defects and deficiencies such as high power consumption, poor safety performance, and high maintenance costs after failure.

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