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

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

Inactive Publication Date: 2004-11-24
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
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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 with 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 invention discloses a feedback adjustment device and method 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. The feedback adjustment device is composed of a high-precision angle sensor arranged on the traveling beam, a synchronous controller and two proportional regulating valves arranged on the oil circuit of the hydraulic cylinder. The adjustment method includes the data acquisition of the angle sensor, the judgment and calculation of the synchronous regulator and the execution of the proportional control valve, so as to keep the movement displacement of the pistons of the two liquid cylinders tending to be synchronized. The invention has the advantages that the adjusting device and method are simple and fast, and the displacement difference between the two ends of the traveling crossbeam is less than 1mm within the stroke of 0-4m, thereby ensuring the force balance of the tested tool and reliable test results.

Description

technical field [0001] The invention relates to a feedback adjustment device and method 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 Patents(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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