Novel rotary pressure pulse controller and operation method

Abstract

The invention provides a novel rotary pressure pulse controller which is in a rotational motion state when working. The controller comprises a variable frequency control motor, a rotary central spindle and a controller shell body. The rotary central spindle is located in the controller shell body and connected with variable frequency control motor through a concentric shaft. The rotary central spindle and the controller shell body are sealed by a sealer. The variable frequency control motor drives the rotary central spindle to rotate in a certain rotary speed according to the acquirements of the pressure pulse frequency. A connecting opening is formed in the controller shell body and is connected with a high pressure oil supply interface, a low pressure relief interface and a test piece interface. The rotary central spindle is provided with linking groove groups in a coaxial direction. A high pressure linking groove is communicated with high pressure oil supply interface and a test piece interface in the boost state. A low pressure linking groove is communicated with low pressure relief interface and the test piece in the pressure relief state. The amount of the linking groove groups can be optimally designed according to the amount of the test pieces of the impulse test in a same batch. Sealing form between the rotary central spindle and the controller shell body can be optimally designed according to the different test pressure.

Description

technical field [0001] The invention relates to the fields of hydraulic equipment detection and performance detection of high-pressure metal pipes, in particular to a novel rotary pressure pulse controller and a working method. Background technique [0002] In hydraulic equipment testing and performance testing of high-pressure metal pipes, in addition to the conventional pressure-resistant and pressure-holding tests, it is considered that some equipment is often in the working state of rapid pressure changes, and the sudden increase or decrease of pressure and repeated fluctuations will affect the equipment. It will affect the fatigue characteristics of the equipment and accelerate the aging and cracking of the equipment. Therefore, after the equipment is manufactured and processed, it is necessary to perform a pressure pulse test on the equipment. Conventional pressure pulse tests mainly use solenoid valves or reversing servo control valves as the main components to contro...

AI Technical Summary

Problems solved by technology

Conventional pressure pulse tests mainly use solenoid valves or reversing servo control valves as the main components to control pressure pulses. Solenoid valves need to be used in sets, and the comprehensive control error is relatively large. Larger, the valve body is easily affected by impurities, the switching frequency of the valve core is not high, the frequent movement of the valve core will cause a large loss of the valve core, and the maintenance cost of the test bench is high

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