Uniform gas-liquid mixing device used before underwater mixed transportation pumping inlet

Abstract

The invention relates to a uniform mixing device, in particular to a uniform gas-liquid mixing device used before an underwater mixed transportation pumping inlet. The uniform gas-liquid mixing device comprises a cylinder cover, an inlet tube, a liquid level sensor, a bracket, a backflow tube, an electromagnetic valve, a tank body, a secondary mixing cavity, a support shaft, blades, a triangular fixing rack, an outlet tube, a fixing tape, a gas guide tube, a gas collection cover, electric heating wires, a mixing cavity and a gas inlet hole, wherein the cylinder cover is fixed at the top of the tank body through a bolt and forms a sealed space with the tank body; the tank body is fixed on the bracket; the inlet tube is fixed at one end of the tank body and communicated with the sealed space inside the tank body; the backflow tube is fixed at the other end of the tank body and communicated with the sealed space inside the tank body; the electromagnetic valve is connected with the backflow tube through a flange. Due to the design idea of 'separating firstly and mixing later', gas-liquid separation of a gas-liquid mixture is carried out firstly, and mixing is carried out later, so that the gas-liquid mixing efficiency can be relatively high, moreover, air blocking can be avoided, a vapor mixture can be automatically eliminated, and the working intensity of use and maintenance can be alleviated.

Description

technical field [0001] The invention relates to a homogenizing device, in particular to a gas-liquid homogenizing device used before the inlet of an underwater mixing pump. Background technique [0002] At present, in the process of oil and gas production and transportation, since the medium transported by the mixed pump is a gas-liquid mixture, the gas content at the pump inlet changes drastically, and unstable flow states such as slug flow, bubble flow, and annular flow often occur. The pump often lacks a buffer adjustment device at the inlet, which leads to large fluctuations in the gas content at the pump inlet, which affects the performance of the pump. Among them, the slug flow will cause pure gas working conditions for a certain period of time. At this time, the screw rotor of the mixed pump is in a dry grinding state. The sharp rise in temperature will cause the deformation of the screw rotor and the mixed pump will be scrapped, causing great economic losses. Especi...

AI Technical Summary

Problems solved by technology

[0002] At present, in the process of oil and gas production and transportation, since the medium transported by the mixed pump is a gas-liquid mixture, the gas content at the pump inlet changes drastically, and unstable flow states such as slug flow, bubble flow, and annular flow often occur. The pump often lacks a buffer adjustment device at the inlet, which leads to large fluctuations in the gas content at the pump inlet, which affects the performance of the pump.

Among them, the slug flow will cause pure gas working conditions for a certain period of time. At this time, the screw rotor of the mixed pump is in a dry grinding state. The sharp rise in temperature will cause the deformation of the screw rotor and the mixed pump will be scrapped, causing great economic losses.

Especially in subsea oil and gas fields, the gas content rate of the output has a greater fluctuation range. Once the mixing pump is damaged due to the change of the gas content range, it is extremely difficult to repair and replace.

At present, there are very few related studies on the mixing device at the inlet of the mixed pump, and there is an urgent need for a gas-liquid mixing device that can adjust and improve the working conditions of the mixed pump inlet.

Images