An electro-hydraulic control system for a coiled tubing traction robot
An electro-hydraulic control system and robot technology, applied in the direction of fluid pressure actuation system components, special tubes, tube components, etc., can solve the problems of no product being put into the market, traction robot research, etc., and achieve long working life, smooth movement, and reduced effect of error
Inactive Publication Date: 2019-05-10
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
However, there is little research on hydraulically driven traction robots, and no better products have been put into the market.
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[0035] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0036] An electro-hydraulic control system for a coiled tubing traction robot, including a fuel tank 1, a micro motor 17, a hydraulic pump 3, an oil filter 2, an overflow valve 4, one-way valves 5, 6, 7, 8, and a three-position four-way electromagnetic switch Directional valve 9,10,11,12, front support cylinder 16, rear support cylinder 14, front telescopic cylinder 15 and rear telescopic cylinder 13. The motor 17 is connected with the hydraulic pump 3, the hydraulic pump 3 communicates with the oil tank 1 through the oil filter 2, the hydraulic oil enters the hydraulic pump 3 through the oil tank 1, flows from the outlet of the hydraulic pump through the check valves 5, 6, 7, 8, and then enters the three Position four-way electromagnetic reversing valve 9, 10, 11, 12. The P...
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The invention relates to an electro-hydraulic control system of a continuous oil pipe traction robot, and belongs to the field of petroleum and gas development equipment. The hydraulic control system comprises an oil tank, a mini motor, a mini hydraulic pump, a valve set and a valve set electric control assembly. The motor is powered through a ground passing armored cable and connected with the hydraulic pump. The oil tank supplies hydraulic oil. The hydraulic pump communicates with the valve set. A liquid outlet of the hydraulic pump communicates with four one-way valves communicating with four three-position four-way electromagnetic reversing valves correspondingly. The four three-position four-way electromagnetic reversing valves communicate with front-back telescopic cylinders and front-back supporting cylinders correspondingly. The electro-hydraulic control system has the beneficial effects that telescopic crawling of the traction robot is achieved through the electro-hydraulic control system; the hydraulic system of the underground traction robot is provided with a hydraulic station, and ground hydraulic oil supply is not needed; the three-position four-way valves with the O type and Y type meso-position functions are adopted in the telescopic cylinders and the supporting cylinders; and the electro-hydraulic control system can be applicable to horizontal well logging, equipment conveying and small-well-hole well traction control work.
Description
technical field [0001] The invention relates to the field of oil and gas development equipment, in particular to a hydraulic control system for a coiled tubing traction robot. Background technique [0002] Horizontal well technology is widely used in the exploration and development of deep, deep sea and complex oil and gas resources. The problem of instrument transportation in the application process has gradually become the key technology of oil and gas field development and oil and gas storage and transportation. Conventional tubing transportation, pumping transportation, and coiled tubing transportation have problems such as low efficiency, high cost, and coiled tubing buckling deformation when facing horizontal wells, extended-reach wells, and directional wells. Therefore, the downhole tractor has gradually developed as a new type of transportation. [0003] For the downhole tractor, it can be divided into wheel type, telescopic type, crawler type, and impact type accor...
Claims
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IPC IPC(8): F16L55/38F15B11/16F15B13/08F15B21/02
CPCF15B11/16F15B13/08F15B21/02F16L55/38F16L2101/30
Inventor 朱海燕刘清友杨亚强王昆鹏何俊江赵建国
Owner SOUTHWEST PETROLEUM UNIV