Mounting and elevating method for deep-well pump of liquefied natural gas storage tank

Abstract

The invention discloses a mounting and elevating method for a deep-well pump of a liquefied natural gas storage tank. The mounting and elevating method comprises the following specific steps of firstly, in the mounting process of the deep-well pump, firstly, taking one section of steel wire rope with connectors at two ends, connecting one end of the steel wire rope with a low-pressure pump, and connecting the other end of the steel wire rope with a lifting hook of lifting equipment; secondly, downward placing the lifting hook of the lifting equipment to the upper edge of the pump well, then using a brace rod to insert into a supporting hole which is connected with the steel wire rope and is used for lifting a supporting plate, so that the whole deep-well pump is supported; at the same time, detaching the lifting hook, lengthening a steel wire rope with one connector; performing mounting and downward placing work of next section of deep-well pump by using the lengthened steel wire rope, and finishing the mounting work of the whole deep-well pump according to the cycle, wherein the elevating process of the deep-well pump is opposite to the mounting process of the deep-well pump. According to the mounting and elevating method disclosed by the invention, the process can be finished only by using one steel wire rope, so that detaching, mounting and winding work of the steel wire rope in the mounting and elevating process of the deep-well pump for multiple times can be avoided; in addition, the detaching, mounting and winding time of the steel wire rope is greatly shortened.

Description

technical field [0001] The invention relates to a method for installing and lifting a liquefied natural gas storage tank, in particular to a method for installing and lifting a deep well pump for a liquefied natural gas storage tank. It belongs to the field of petroleum and chemical industry. Background technique [0002] In the petrochemical industry, many liquid petrochemical products stored in large storage tanks need to be pumped out of the storage tanks through deep well pumps. Since the deep well pump is often installed in the pump well leading from the top of the storage tank to the inside of the liquid, the installation and lifting of the deep well pump are often involved in the installation and use of the deep well pump. [0003] like Figure 4 As shown, at present, when installing and lowering or lifting the deep well pump 1, since the pump well 2 is relatively deep, the hoisting height of the hoisting equipment is limited. In actual operation, two wire ropes are...

AI Technical Summary

Problems solved by technology

During the operation, the operation process is more complicated due to the multiple removal and installation winding work of the wire rope

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