High-Temperature Pressure Washing With Preheating and Barrier Seals
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Solution Overview
Problem
High-pressure fluid washing systems operating at pressures above 5,000 psig pose safety risks due to reactive forces, and existing high-temperature washers face design challenges and inefficiencies in heating fluid before or after pressurization, which can lead to component failure and reduced efficiency.
Innovation Solution
A system that pressurizes ambient fluid to low pressure using a booster pump, heats it to high temperatures before pressurization, and uses a modified high-pressure pump with a barrier fluid seal to maintain safety and efficiency, allowing for medium to high-pressure, high-temperature fluid distribution for cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-pressure fluid washing systems operate at pressures above 5,000 psig, then cleaning efficiency is improved, but operator safety deteriorates due to reactive forces causing loss of control
Solution Approach 1:
The patent replaces mechanical high-pressure water jetting (above 5,000 psig) with thermal energy substitution. By heating water to high temperatures (above ambient phase change) and maintaining it at lower pressures (below 5,000 psig), the system achieves effective cleaning through thermal effects rather than high-pressure mechanical forces, thereby eliminating dangerous reactive forces while maintaining cleaning productivity.
2Productivity
If fluid temperature is increased to improve cleaning efficiency, then contaminant removal effectiveness is improved, but component design complexity increases
Solution Approach 1:
The patent applies preliminary action by heating the water to high temperatures before it enters the high-pressure pump. This pre-heating allows the water to remain in liquid phase during pressurization (due to elevated vapor pressure at high temperatures), simplifying pump design and operation compared to heating after pressurization. The barrier fluid seal is also pre-configured to handle high-temperature conditions, reducing overall system complexity.
3Temperature
If high-temperature fluid is pressurized, then high-temperature high-pressure cleaning capability is achieved, but pump component reliability deteriorates due to thermal stress
Solution Approach 1:
The patent introduces a barrier fluid seal as an intermediary between the high-temperature pressurized water and the pump components. The barrier fluid (circulating at lower temperature) isolates the pump's internal components from direct exposure to high-temperature water, reducing thermal stress and improving reliability. This intermediary layer allows the pump to handle high-temperature fluid without direct thermal contact with sensitive components.
4Use of energy by moving object
If conventional high-temperature pressure washers heat fluid after pressurization, then heating efficiency is improved, but system safety and design complexity worsen
Solution Approach 1:
The patent inverts the conventional sequence by heating the water before pressurization rather than after. This reversal allows the water to be heated to high temperatures while maintaining lower pressures during the heating process, improving safety. The inverted sequence also simplifies design by avoiding the need to manage phase change and thermal expansion under high pressure, while still achieving effective high-temperature high-pressure cleaning output.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables safe and efficient cleaning at pressures up to 10,000 psig and temperatures up to 312°F by preventing fluid from flashing to vapor, ensuring operator safety and system reliability.
Implementation Method 1
A modified high-pressure pump with a barrier fluid seal to maintain safety and efficiency
Implementation Method 2
heats it to high temperatures before pressurization... preventing fluid from flashing to vapor
Data Source
AI summary
Low and medium pressure, high temperature, fluid washers for pressure cleaning surfaces, vessels, piping, tubing, and other structures having a tri-plex pump downstream of a fluid heater in which the high pressure pump employs a barrier seal system with circulating fluid.