Temperature accurate control device and method of oilfield negative-pressure heating furnace

Abstract

The invention provides a temperature accurate control device of an oilfield negative-pressure heating furnace, aiming to solve the problems of a traditional control manner that the liquid temperature fluctuation in a gathering and transportation process is great, and functions of synchronously starting and stopping, monitoring a flue gas discharging temperature and protecting liquid leakage and gas leakage are lacked, certain potential safety hazards exist and the oilfield output is seriously influenced. The temperature accurate control device comprises a controller, wherein the controller is connected with a temperature control unit, a proportioning control unit, an ignition system and a flame safety unit respectively; the temperature control unit comprises a temperature sensor, a pressure sensor and a flow sensor; the proportioning control unit comprises a combustor and at least one electric actuator mounted on an air door; the ignition system comprises an electronic igniter, a program controller and a solenoid valve mounted in a flue gas pipeline; the flame safety unit comprises an ultraviolet flame detector, a radio frequency admittance sensor and a combustible gas sensor; the controller is connected with an alarm and a control input keyboard respectively. The temperature accurate control device of the oilfield negative-pressure heating furnace is simple to operate, convenient to use and high in practicability.

Description

technical field [0001] The invention belongs to the field of oil field heating furnace control, and relates to a heating furnace temperature control device, in particular to a precise temperature control device and method for an oil field negative pressure heating furnace. Background technique [0002] With the continuous development of oil fields, the gas consumption per ton of oil has also increased a lot. The resulting energy waste such as safe combustion of fuel, heat dissipation loss, environmental pollution and hidden safety hazards have become problems that cannot be ignored in oil fields. Great energy saving and consumption reduction, and the English of the heating furnace and its technology can effectively solve this problem; but at present, the control method of the negative pressure heating furnace applied in the oil field is mainly automatic sliding two-stage or artificial remote manual control of the burner The amount of gas and air distribution can be controll...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the traditional control method is easy to cause large fluctuations in liquid temperature during the gathering and transportation process, and lacks synchronous start and stop, exhaust gas temperature monitoring, and liquid and gas leakage protection functions, there are certain safety hazards and seriously affect the oilfield production. The present invention proposes a heating furnace temperature control device that is safe, reliable and efficient to operate, ensures that crude oil, natural gas, oil-water mixture, and oil-gas-water mixture are heated to the temperature required by the process, and meets the requirements of the production gathering and transportation process and processing technology. The specific technology The scheme is as follows:

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