Pressure Tube

In industrial automation, fluid power, and pressure vessel operation systems, pressure tubes are core auxiliary piping components that ensure steady-state operation of units and mitigate the risks of abnormal pressure. They are widely used in various pressure-related scenarios such as hydropower generation, thermal equipment, chemical storage and transportation, and industrial gas supply. Unlike main pipelines responsible for media transport, pressure tubes do not handle material transfer. Their core function is to balance system pressure differentials, optimize fluid conditions, and buffer equipment stress. They are crucial supporting facilities for ensuring the efficient, safe, and low-loss operation of the entire system.

During continuous operation, industrial equipment is susceptible to uneven pressure differentials due to multiple factors, including media flow resistance, component wear, sealing gap deviations, start-up and shutdown switching, and changes in ambient temperature. These minute pressure differences can cause short-term fluid flow instability and system fluctuations, and long-term issues such as equipment wear and tear. For example, during turbine operation, the high-speed rotation of the runner can cause pressure imbalance between the upper and lower chambers, generating additional axial forces. This exacerbates wear on core components such as the runner, top cover, and bearings, while also causing unit vibration and abnormal noise, affecting power generation efficiency. In multi-tank operation, excessive pressure differentials can lead to uneven media distribution, causing some tanks to overload and bearing pressure, resulting in equipment damage, material waste, and reduced production precision.

The core working principle of a pressure tube is to create an unobstructed pressure transmission channel through physical connection, achieving dynamic pressure balance within the system. Throughout the equipment's operation, the pressure tube monitors and manages pressure differentials in real time. When high-pressure accumulation or low-pressure gaps occur in certain parts of the system, pressure compensation and balance are automatically completed based on the physical pressure difference, without the need for electrical control adjustments, ensuring that the pressure of the entire closed system remains within the standard operating range. This purely physical pressure stabilization method offers stronger stability, a lower failure rate, requires no energy investment, and is suitable for various complex and continuous industrial production scenarios.