Pump well structure

Abstract

The invention relates to a pump well structure which comprises a pump well body structure, a pump well connecting structure, a plurality of connecting buckles, a pump well supporting structure, a forward pump well bottom annular support and a backward pump well bottom annular support, wherein the pump well body structure is mainly composed of a pump well pipeline and a pump well bottom valve. the pump well connecting structure comprises a fastening connecting ring coaxially arranged outside the pump well pipeline in a sleeving mode; the connecting buckles are evenly arranged in the gap between the fastening connecting ring and the pump well pipeline in the circumferential direction; the pump well supporting structure comprises pump well bottom radial supports, at least two pump well bottom radial supports are arranged on the outer side of the pump well pipeline in the circumferential direction, and the pump well bottom radial supports are configured to limit radial displacement of the pump well pipeline; and the forward pump well bottom annular support and the backward pump well bottom annular support are arranged on the front side and the rear side of the pump well pipeline respectively and are configured to limit annular displacement of the pump well pipeline. The pump well structure has the effects of supporting, buckling resistance and vibration resistance, and the situation that the strength, safety and stability of the pump well pipeline can be guaranteed under special working conditions.

Description

technical field [0001] The invention relates to the technical field of LNG storage tanks, in particular to a pump well structure based on vibration reduction and buckling resistance. Background technique [0002] LNG storage tanks need to use submersible pumps for liquid export. Generally, the function of submersible pumps is to transport liquid from storage tanks and gasify them for export or directly carry out liquid loading. In recent years, with the rise of the ship bunkering market, a new type of submersible pump is installed in the LNG storage tank. The function of the loading pump is mainly to output the liquid in the LNG storage tank for the return Lose raise. Since the flow of back-transported loading is much larger than that of liquid loading, and there is a certain time limit requirement for the ship to berth, the flow of the loading pump is much larger than that of the traditional submersible pump. The pipeline inside the tank that transports the pumped liquid ...

AI Technical Summary

Problems solved by technology

Since the allowable external pressure of the pump well pipeline needs to meet the sum of the liquid level pressure and the internal pressure of the storage tank, the increased size of the pump well will directly lead to an increase in the liquid level pressure and indirectly lead to insufficient pressure bearing capacity of the pump well pipeline

In addition, due to the large flow rate during the operation of the high-flow loading pump, the disturbance generated is relatively large, resulting in a large vibration load during the operation of the loading pump well

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