Testbed of hydraulic winches of drilling machine

Abstract

The invention discloses a testbed of hydraulic winches of a drilling machine. The testbed comprises a PLC controller, an industrial personal computer, a hydraulic system and a test circuit, wherein the hydraulic system has two hydraulic winches which serve as a load winch and a tested winch, and the test circuit can test performances of the hydraulic winch as the tested winch and interchange the load winch and the tested winch according to a test requirement; the test circuit comprises a loading sub circuit which is connected to the load winch and can provide an adjustable loading force to the testbed, a driving sub circuit which is connected to the tested winch and can performing test driving on the tested winch, and an oil return pipeline for controlling medium cleanliness and system oil temperature of the hydraulic system and an auxiliary sub circuit which can interchange the load winch and the tested winch and open a parking brake corresponding to the hydraulic winch. The testbed disclosed by the invention not only can provide accurate and reliable test data, but also is simple in structure and easy to operate, and has the characteristics of being high in efficiency and working uninterruptedly for a long time.

Description

technical field [0001] The invention relates to the technical field of oil drilling rig equipment manufacturing, in particular to equipment for testing the performance of oil drilling rig hydraulic winches. Background technique [0002] The winch is the core component of the entire drilling rig and one of the three major working machines of the drilling rig, which directly determines the drilling capacity of the drilling rig. During the drilling process, the drawworks has the functions of tripping the drilling tool, running the casing, controlling the drilling process, the drilling pressure process and the overall erection of the derrick. In the process of oil production, the winch is a common equipment for operations such as lifting and lowering oil pipes and pumps. The winch with hydraulic power as the power source is widely used in oil drilling rigs due to its advantages of simple structure, easy operation, convenient maintenance, small vibration and impact, and infinite...

AI Technical Summary

Problems solved by technology

[0003] But at present each existing winch that uses hydraulic pressure as the power source all has different defects, such as patent No. CN200910050264.7, in the patent named as hydraulic net lifting winch energy recovery test bench, what it provides is a kind of hydraulic net lifting winch Energy recovery test bench for life test and performance test of hydraulic net hoisting winch

But first of all, this kind of device is only a test hydraulic system designed for the unique working conditions and mechanisms of the net lifting winch itself, and it is not suitable for the quality inspection and reliability test of winches for other purposes; secondly, the energy recovery circuit used by this device The selection of the loading motor and the motor under test needs to match; moreover, the pressure of the loading circuit will be affected by the pressure change of the drive circuit of the motor under test, thus affecting the test effect; another example is the patent number CN201610296383.0, which is named double motor type In the patent of the hydraulic net hoist winch energy recovery test bench, it provides a dual-motor hydraulic net hoist winch energy recovery test bench, which is specially used for the quality inspection and reliability test of the hydraulic net hoist winch, but this device It can only solve the problem that the range of displacement of a single motor cannot meet the requirements of all system loading tests, that is, the problem of matching the selection of the loading motor and the motor under test has been improved, but it still does not solve the problem that the pressure of the loading circuit will be affected by the test. The influence of pressure changes in the motor drive circuit, thus affecting the test results and other issues

Images