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Draining of oil leak in a hydraulic cylinder

A technology for hydraulic cylinders and oil leakage, applied in the field of oil leakage devices, can solve the problems of interruption of normal production, complicated operation of components, and expensive maintenance of hydraulic cylinders.

Inactive Publication Date: 2007-04-04
NAT OILWELL NORWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Hydraulic cylinders operate nearly continuously while being installed in locations that are difficult to reach for routine inspection and where oil spills are undesirable for environmental reasons, such as for maintaining lift between subsea rigs and floating platforms located in oil production Hydraulic cylinders with specified tension in the machine, etc., are expensive to repair when all safety regulations and pollution requirements need to be complied with
Frequent operations require extensive maintenance, while difficult-to-reach locations complicate access to the part, and maintenance often causes interruptions to the plant's normal production

Method used

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  • Draining of oil leak in a hydraulic cylinder
  • Draining of oil leak in a hydraulic cylinder

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Embodiment Construction

[0016] In the drawings, reference numeral 1 denotes a hydraulic cylinder, wherein 3 is a hydraulic cylinder wall, 5 is a piston rod, and 7 is a piston. The hydraulic cylinder 1 also comprises a cylinder gable 9 with an auxiliary seal 11 . The piston 7 is provided with a seal 13 . The piston 7 divides the hydraulic cylinder 1 into an upper space 7 a and a lower space 7 b on the rod side of the piston 7 .

[0017] The hydraulic cylinder bottom 15 is screwed on the lower end 19 of the hydraulic cylinder 1 through an internal thread 17 . An annular piston shoulder 21 rests on the inner wall surface 16 of the cylinder bottom 15 . The piston shoulder 21 is provided with a seal 23 and is fastened to the base plate 15 by screws 25 . The base plate 15 is provided with an outlet channel 27 and an air inlet 29 . The air inlet 29 protrudes above the inner wall surface 16 of the base plate 15 to approximately 2 / 3 of the height of the piston shoulder 21 . The discharge channel 27 is co...

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Abstract

A device for a single-acting hydraulic cylinder (1) designed to lift or pull a load upon the existence of an oil pressure on the rod-side of a cylinder piston (7), where the cylinder bottom (15) of the hydraulic cylinder (1) is provided with a drainage outlet (27) for leakage fluid, as well as an air inlet (29).

Description

technical field [0001] This invention relates to a device for draining oil leakage between the piston and the cylinder wall in a hydraulic cylinder, and more particularly to a single-acting vertical hydraulic cylinder designed to push a load through the action of hydraulic pressure A device in which the lead-through of the piston rod of this single-acting vertical hydraulic cylinder is located at the upper end of the hydraulic cylinder. Background technique [0002] Hydraulic cylinders operate nearly continuously while being installed in locations that are difficult to reach for routine inspection and where oil spills are undesirable for environmental reasons, such as for maintaining lift between subsea rigs and floating platforms in oil production Hydraulic cylinders with specified tension in the machine, etc., are expensive to repair when all safety regulations and pollution requirements need to be complied with. Frequent operations require extensive maintenance, while di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/14F15B20/00F15B21/04
CPCF15B15/1433F15B15/149F15B20/005
Inventor 马格纳·马蒂亚斯·穆厄
Owner NAT OILWELL NORWAY