Synchronous translation control device of offshore jig
A technology for control devices and drilling rigs, which is applied in the direction of fluid pressure actuators, mechanical equipment, servo motors, etc. It can solve the problems of large flow errors of hydraulic valves, no way to compensate, and it is difficult to achieve high-precision synchronization. The effect of back pressure
Inactive Publication Date: 2013-10-02
SICHUAN HONGHUA PETROLEUM EQUIP
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Problems solved by technology
The disadvantage of the first method is that the flow error of manual adjustment of the hydraulic valve is relatively large, and it is difficult to achieve high-precision synchronization; at least one person is required to operate and two people to observe, and the observer informs the operator of the expansion and contraction of the two cylinders through the walkie-talkie. To facilitate the operator to adjust the hydraulic valve flow
The disadvantage of the second method is: if the two oil cylinders are not synchronized during the stroke due to severe partial load, there is no way to compensate, and only after the oil cylinder reaches the end can it be compensated
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[0020] Below in conjunction with accompanying drawing, the present invention is described in detail.
[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] The synchronous translation control device of the offshore drilling rig includes a first translation cylinder 1, a second translation cylinder 2, a first hydraulic control reversing valve 3, a second hydraulic control reversing valve 4, a second reversing valve 5, and a multi-way reversing valve. Valve group 6, first reversing valve 7, constant power pump 8, one-way throttle valve 9, synchronous motor 10.
[0023] Working process: After the installation and commissioning are completed, the...
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The invention discloses a synchronous translation control device of an offshore jig. The control device comprises a hydraulic source, wherein the hydraulic source is used for providing power for two translation oil cylinders, a multi-way reversing valve block is used for realizing the reversing and speed control of the two translation oil cylinders, and also controlling the reversing of a hydraulic-control one-way valve, a one-way throttling valve is used for providing back pressure for a synchronous motor to compensate the unbalanced load of the two translation oil cylinders, the synchronous motor is used for realizing the synchronous extending and retraction of the two translation oil cylinders, and a hydraulic-control reversing valve is used for realizing the single actions of the two translation oil cylinders. The control device has the advantages that the synchronous extending and retraction and the movement speed of the two translation oil cylinders can be controlled by the single valve; the load unbalancing of the two translation oil cylinders can be compensated, so as to realize the synchronous extending of the two translation oil cylinders; one translation oil cylinder can be separately operated, the two translation oil cylinders are basically synchronized, then the reversing of the hydraulic-control reversing valve is controlled, and the two translation oil cylinders are enabled to move together, so the structure for controlling the non-synchronizing of the two translation oil cylinders is within the acceptable range.
Description
technical field [0001] The invention relates to offshore oil drilling equipment, in particular to a hydraulic synchronous translation control device for an ocean drilling rig, which is used for longitudinal and lateral translation of the superstructure and bottom structure of the ocean drilling rig. Background technique [0002] Offshore drilling rig is a device mainly used for offshore oil and gas operations (drilling or workover). In order to save drilling costs, it is generally necessary to drill cluster wells. The synchronous translation control device of offshore drilling rig is for this purpose. [0003] There are two main types of existing synchronous translation control devices for offshore drilling rigs: one is that a single hydraulic valve controls a single oil cylinder, and the flow of two hydraulic valves is manually adjusted to control the synchronization of the two oil cylinders; the other is completely dependent on synchronization The motor is used to realize ...
Claims
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IPC IPC(8): F15B11/20F15B13/02
Inventor 路道庆王翌
Owner SICHUAN HONGHUA PETROLEUM EQUIP