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Piston-type deep sea water pressure compensation energy accumulator

A technology of water pressure compensation and accumulator, which is applied in the direction of mechanical equipment, etc., can solve the problems of increasing equipment manufacturing costs, increasing the weight and space occupied by blowout preventer groups, and achieving the effects of reducing weight, sealing well, and reducing manufacturing costs

Active Publication Date: 2012-01-04
河北华北石油荣盛机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase in the number of accumulators, the equipment manufacturing cost is greatly increased, and the weight of the blowout preventer group and the effective underwater space are increased

Method used

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  • Piston-type deep sea water pressure compensation energy accumulator
  • Piston-type deep sea water pressure compensation energy accumulator
  • Piston-type deep sea water pressure compensation energy accumulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Embodiment 1: Taking a piston-type deep sea water pressure compensating accumulator with a volume of 52L and a working pressure of 35MPa as an example, the present invention will be further described in detail.

[0034] refer to Figure 1a . The deep sea water pressure compensation accumulator of the present invention is mainly composed of an air cavity end cover 19, an air charging valve 20, an upper piston 18, an upper housing 17, a connecting partition 14, a sea water filter 16, a hydraulic valve 15, a piston rod 12, a lower Piston 11, vacuum chamber end cover 10, sealing plug 9 are formed.

[0035] A cylindrical upper shell 17 and a lower shell 13 are respectively fixed at both ends of the cylindrical connecting partition 14 . The inner diameter of the upper casing 17 and the lower casing 13 is 305 mm, the length is 1200 mm, and the wall thickness is 50 mm;

[0036] An air chamber end cover 19 is threadedly fixed on the other end of the upper housing 17, and the ai...

Embodiment 2

[0052] Embodiment 2: see image 3 . Embodiment 2 is basically the same as Embodiment 1, except that the inner diameter ratio of the upper casing 17 and the lower casing 13 is 1:2. The diameter ratio of the upper piston 18 to the lower piston 11 is 1:2. The connecting threads connecting the two ends of the partition plate 14 are correspondingly changed at the same time, so that the upper casing 17 and the lower casing 13 can be connected.

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Abstract

The invention relates to a deep sea water pressure compensation energy accumulator which is mainly applied to accumulate energy for the deep sea petroleum drilling hydraulic machinery. A cylindrical upper shell and a cylindrical lower shell are respectively fixed by screws at the two ends of a cylindrical connection baffle plate, a piston rod is arranged inside a centre hole of the connection baffle plate, the two ends of the piston rod are respectively connected with an upper piston and a lower piston. The upper piston, the lower piston and the connection baffle plate divide the energy accumulator into 4 cavities; hydrostatic pressure of sea water is delicately utilized to prevent the energy accumulator from being affected when working in the deep sea, effective liquid amount discharge of the energy accumulator is improved, so that a small number of energy accumulators can be employed to provide sufficient energy for underwater hydraulic sets and machines and tools, reduce weight of the underwater devices and effectively use space and reduce manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of deep sea oil drilling, in particular to hydraulic mechanical equipment for deep sea operations, and is a novel deep sea pressure compensation accumulator. Background technique [0002] With the continuous increase of human demand for oil, the oil and gas resources on land are rapidly decreasing, and the focus of oil and gas exploration and development has shifted from land to sea, and is constantly marching into the deep sea. Higher requirements are put forward, and although conventional accumulators can meet the requirements of deep sea work, their efficiency is very low. [0003] At present, conventional accumulators are first pre-charged with a certain amount of gas on water to generate a certain pre-charge pressure. When the accumulator is placed underwater to work, the hydrostatic pressure of seawater greatly increases the pressure of the pre-charged gas in the accumulator. , so the discharge of pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/04
CPCY02E60/15Y02E60/16
Inventor 李慎奎许宏奇王肖耿艳东王俊洲
Owner 河北华北石油荣盛机械制造有限公司