Feedback regulator and process of large load, double hydraulic cylinder and cychronous operation

A technology of feedback adjustment and synchronous operation, applied in fluid pressure actuators, measuring devices, instruments, etc., can solve problems such as complex devices and operating processes, achieve force balance, simple adjustment devices and processes, and reliable test results Effect

Inactive Publication Date: 2004-04-28
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

The device and operation process of the above measures are relatively complicated

Method used

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  • Feedback regulator and process of large load, double hydraulic cylinder and cychronous operation
  • Feedback regulator and process of large load, double hydraulic cylinder and cychronous operation
  • Feedback regulator and process of large load, double hydraulic cylinder and cychronous operation

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Embodiment Construction

[0018] Feedback adjustment device and process for synchronous operation of large-load dual hydraulic cylinders, which is composed of an inclination sensor installed on a traveling beam, a synchronous controller with a specific program, and two proportional regulating valves installed on the hydraulic cylinder pipeline The feedback adjustment structure realizes the dynamic and synchronous control of the hydraulic cylinders on both sides of the downhole tool detection device under heavy load conditions. The process is:

[0019] Depend on figure 1 and figure 2 As shown, the traveling beam moves up and down along the four guide columns with a stroke of 4m. The movement of the traveling beam depends on the drive of the hydraulic cylinders on both sides. The distance between the hydraulic cylinders on both sides is 2.5m. Tool, when the traveling beam moves downward, it applies pressure to the tool. The design pressure of this system is 300kN. When the traveling beam moves upward, ...

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Abstract

The present invention discloses a feedback regulator and regulation process of great load, double hydraulic cylinder and sync operation for testing subsurface tool stress, and belongs to the field of vertical double hydraulic cylinder sync controlling technology. The feedback regulator includes high precision angle sensor and sync controller set on the walking beam, and two proportion regulating valve set in the oil path of the hydraulic cylinder. The regulation process includes the data acquisition of the angle sensor, judgment and operation of the sync controller and the execution of the proportion regulating valve while maintaining the sync of the two hydraulic cylinders. The present invention has the advantages of simple and fast regulator and regulation process, displacement difference within 1 mm in the walking beam stroke of 0-4 m, balanced stress of the tested tool and creditable test result.

Description

technical field [0001] The invention relates to a feedback adjustment device and process for the synchronous operation of large-load dual hydraulic cylinders used in a force testing device for downhole tools, which belongs to the control technology for synchronous operation of vertically placed dual hydraulic cylinders. Background technique [0002] The downhole tool force testing device consists of a guide column, a traveling beam slidingly matched with the guiding column, a tool connection assembly under the traveling beam, and a hydraulic cylinder fixed at both ends of the traveling beam. The force test of downhole tools needs to apply a large load to the tool under test. Generally, the applied tensile pressure is required to be 300-1000kN, and the two hydraulic cylinders must be operated synchronously. The force test device of such a structure must reach For the above technical requirements, the existing method is to improve the equivalent m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02G01L1/00
Inventor 傅星胡小唐陈峰胡晓东郭彤李梦超
Owner TIANJIN UNIV
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