High-Pressure Valve Housing Sealing With Surface Support
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Solution Overview
Problem
Conventional valve systems are not suitable for high-pressure applications above 700 bar due to decreased actuating force and potential unscrewing or tearing issues, making them unreliable for controlling fluid ports.
Innovation Solution
A valve system design where the valve device is in frontal contact with the bottom of the valve housing, supported by a large sealing surface, with multiple sealing devices to manage high pressures, including a floating guide sleeve and compression spring for reliable operation and reduced pressure on guide sleeves, allowing for high-pressure control without large valve dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve device is supported only at discrete points (conventional design), then the valve housing structure is simpler, but the valve device cannot reliably withstand high pressures above 700 bar
Solution Approach 1:
The support function is segmented from discrete point supports to distributed surface supports. The bottom of the receiving space is divided into multiple sealing sectors (first sector, second sector, etc.), each with its own sealing device, distributing the high pressure loads across multiple contact points and surfaces rather than concentrating them at single points.
Solution Approach 2:
The support mechanism transitions from zero-dimensional point contacts to two-dimensional surface contacts. The valve device is supported across entire surface areas (end faces of guide sleeves, bottom surface of receiving space) rather than at discrete points, adding dimensional coverage to the support function and enabling reliable high-pressure containment.
2Strength
If thick walls are used to withstand high pressure, then pressure resistance is improved, but the actuating force decreases considerably for the same solenoid size
Solution Approach 1:
The high-pressure containment function is extracted from the solenoid actuator and transferred to the valve housing structure. The solenoid device is positioned outside the high-pressure zone, while the valve housing, guide sleeves, and sealing devices form a separate pressure-containing structure, allowing the solenoid to maintain thin walls and high actuating force while the housing provides the necessary pressure resistance.
Solution Approach 2:
The valve piston and guide sleeves act as intermediaries between the low-pressure actuator side and the high-pressure fluid side. These components transmit the solenoid's actuating force to the fluid while being contained within a pressure-resistant housing structure, decoupling the actuator design from high-pressure wall thickness requirements.
3Reliability
If high pressure is applied at the front end in screw-in seat valves, then sealing is achieved, but dangerous unscrewing processes or tearing-out processes occur
Solution Approach 1:
Instead of relying on threaded connections to withstand high axial pressures, the design inverts the load path by using radial sealing at the front end face of the guide part. The high pressure is contained by a flat face seal between the guide part and the valve housing bottom, while the threaded connection only needs to provide positioning and minor sealing, eliminating the unscrewing and tearing risks.
4Ease of operation
If manual emergency override is used in high-pressure valves, then emergency operation is possible, but the override becomes very stiff and impossible at pressures above 700 bar
Solution Approach 1:
The manual mechanical override system is replaced with a hydraulic or pneumatic actuation system. A pilot valve or control line allows external pressure signals to actuate the main valve, substituting the need for direct mechanical force application with fluid pressure transmission, enabling easy emergency operation even at extremely high pressures.
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
The system achieves reliable operation and high-pressure control with reduced stress on seals and guide sleeves, preventing deformation and enabling efficient control of fluid ports, even at pressures above 700 bar, while maintaining compact dimensions.
Implementation Method 1
a compression spring which is arranged in the pressure chamber and which acts on the valve piston in the direction of the initial position of the valve piston
Implementation Method 2
The guide part is arranged stationarily in the receiving space of the valve housing. Via connecting channels matching the fluid ports in the valve housing, the fluid ports open out of the guide part in the direction of the valve piston. The actuating solenoid device
Data Source
AI summary
A valve system has at least one actuated valve device (10) for controlling various fluid ports (15, 16, 17) of a valve housing (18). The valve housing has a receiving space (20) forming a bottom (22), into which the fluid ports (15, 16, 17) open and in which the valve device (10) is installed. The valve device (10) is in frontal contact with the bottom (22) of the receiving space (20) at least in a sector (26). At least during operation, this sector (26) is sealed with respect to the receiving space (20) by at least one sealing device.