IMPROVEMENT OF HIGH PRESSURE BENCH SYSTEMS

Background. The object of the study is a high-pressure stand. The subject of the study is the ways to improve the systems of the high-pressure stand to meet modern requirements. The purpose of the work is to increase the reliability of the DPA test results, reduce the complexity of performing tuning operations, tests. Materials and methods. In the process of improvement, an analysis of the technical condition and defect of the stand was carried out, according to the results of which the directions for improving the stand were determined, ensuring high efficiency, productivity and reliability of testing processes and increasing the range of reproducible pressure values, based on the basic principles of its operation and functioning, as well as through the use of a more modern and advanced element base. Parts and assemblies have been manufactured, as well as their installation and assembly to working condition. Commissioning works have been carried out, including comprehensive testing, commissioning of the stand, as well as preparation of the stand for the production process. Results. Due to the new principle of operation of the pressure supply system, an increase in the range of reproducible overpressure values up to 2000 kg/cm2 was achieved, the supply of overpressure to the DPA was ensured while simultaneously exposed to low temperatures up to minus 196 °C. Thanks to the developed software, the control of the liquid nitrogen supply is automated. Conclusions. The implemented solutions in order to improve the overpressure supply system and the newly developed stand design solve the actual problems of sensor-converting equipment for measuringpressures in harsh operating conditions typical for the operation of rocket and space technology products. Automation of the stand made it possible to achieve a reduction in the registration time of analog output signals during testing, increase the accuracy and reliability of temperature reproduction due to high-precision digital recording equipment, optimize the consumption of liquid nitrogen to reproduce the required temperature values.