Conical Pressure-Regulating Valve for Low-Force Ultra-High Pressure Control
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Solution Overview
Problem
Pressure regulating valves used in ultrahigh pressure technology above 500 bar require large adjustment forces due to the applied operating pressure and pressurized projected area, and they often rely on wear-prone dynamic high-pressure contact seals.
Innovation Solution
A pressure regulating valve design featuring a conically shaped valve body and seat with throttling areas and pressure chambers that reduce the force required for adjustment, eliminating the need for dynamic high-pressure contact seals by distributing the force along the lateral surface, thus minimizing the axial force needed to move the valve body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional pressure regulating valve with a pressurized projected area is used, then the valve can control high-pressure fluid flow, but large adjustment forces are required to move the valve body
Solution Approach 1:
The valve body employs a conical shape instead of a cylindrical form, allowing the high-pressure medium to act on the lateral conical surface. This curvature transforms the force distribution, reducing the axial component of the force that must be overcome during adjustment, thereby enabling operation with significantly lower adjustment forces while maintaining reliability in high-pressure environments
Solution Approach 2:
The invention changes the geometric parameters of the valve body from a conventional cylindrical shape to a conical shape. This parameter change modifies how pressure forces are distributed and directed, converting a portion of the axial force into radial components that are better supported by the bearing structure, thus reducing the net adjustment force required
2Reliability
If dynamic high-pressure contact seals are used in the valve, then sealing is achieved, but the seals are wear-prone and reduce durability
Solution Approach 1:
The invention extracts and eliminates the dynamic high-pressure contact seals from the valve structure. By using a conical valve body design that allows sealing through geometric interference and pressure-activated contact, the patent removes the wear-prone dynamic seal components entirely, thereby extending service life while maintaining sealing performance
Solution Approach 2:
The patent replaces the mechanical dynamic seal system with a geometric sealing mechanism based on the conical valve body. The sealing is achieved through the precise conical geometry and pressure-activated contact between the valve body and seat, eliminating the need for separate dynamic seal components that are subject to wear
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 design allows for significant reduction in adjustment forces and eliminates the use of wear-prone seals, enhancing the operational efficiency and durability of the valve under high-pressure conditions.
Implementation Method 1
the conically shaped lateral outer surface of the valve body extends in the direction of movement of the valve body on both sides of the pressure chamber through the correspondingly conically shaped receptacle of the valve seat... the medium under high pressure always moves along the lateral outer surface of the valve body and thus enables the valve body to be adjusted with significantly less force since, due to the conicity of the valve body, only a fraction of the force acting on the valve body by the high pressure medium acts in the axial or adjustment direction
Implementation Method 2
A first pressure chamber is provided in the valve seat adjacent to the lateral outer surface of the valve body, from which a throttle gap extends in each case along the lateral outer surface of the valve body in the direction of movement of the valve body... throttling areas provided on both sides of the first pressure chamber and formed by respective throttle gaps between the lateral outer surface of the valve body and the inner surface of the valve seat enable the high-pressure medium, which has entered through the inlet, to be reduced by being discharged via the two throttle gaps
Data Source
AI summary
A pressure-regulating valve for a fluid medium that is at system pressure, e.g., for system pressures >1000 bar, has a valve housing with an inlet channel and at least one outlet channel. A valve seat arranged in the valve housing has a conical recess holding an axially mobile valve body with a lateral outer surface at least part of which is conical. The interaction of the valve body and valve seat regulate throughflow of medium from the inlet channel to the outlet channel. The valve seat, adjacent to the lateral outer surface of the valve body, includes a first pressure chamber from which there extends, in the direction of movement of the valve body, a throttle gap along the lateral outer surface of the valve body. The conical lateral outer surface of the valve body extends, in the direction of movement of the valve body, on either side of the pressure chamber through the conical recess of the valve seat.