Hydraulic Reciprocating Compressor Valve Actuation
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Solution Overview
Problem
Existing valves for reciprocating compressors are either overly complex and unreliable due to electromagnetic actuation or unsafe when used in explosive environments, and lack flexibility in opening and closing mechanisms beyond pressure differences.
Innovation Solution
A compact valve design with a hydraulic apparatus integrated within the valve body, featuring a shutter element that moves between open and closed positions using a hydraulic circuit with pistons and housings, allowing for active control and increased operational flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electromagnetic actuation is used to enable active control of the valve, then operational flexibility is improved, but device complexity increases and reliability decreases
Solution Approach 1:
The patent employs a hydraulic actuation system where a piston moves within a cylinder to directly drive the shutter element. Hydraulic fluid is introduced to move the piston, which in turn moves the shutter between open and closed positions. This hydraulic mechanism replaces complex electromagnetic actuators while providing reliable active control for multiple operational modes including loading, unloading, and intermediate positions.
2Adaptability or versatility
If electromagnetic actuation is used to enable active control of the valve, then operational flexibility is improved, but reliability decreases
Solution Approach 1:
The hydraulic actuation system provides inherently higher reliability compared to electromagnetic actuators. The piston-cylinder arrangement with hydraulic fluid creates a robust mechanical system that is less susceptible to failures from electrical issues, heat generation, or complex circuitry. The system can be controlled through simple pressure differential control, enhancing reliability in demanding compressor environments.
3Adaptability or versatility
If electromagnetic actuators are integrated into the valve body, then active control is achieved, but space requirements increase
Solution Approach 1:
The hydraulic actuation system is designed with a compact piston-cylinder arrangement that integrates efficiently within the valve body structure. The cylinder forms part of the valve housing, and the piston moves within this integrated space to drive the shutter. This hydraulic integration achieves active control capability while maintaining compact dimensions suitable for standard compressor installations.
4Adaptability or versatility
If electromagnetic circuits are placed near process gas, then active control is enabled, but safety hazards increase in explosive environments
Solution Approach 1:
The hydraulic actuation system eliminates the need for electromagnetic circuits in proximity to process gas. Instead, it uses hydraulic fluid pressure to actuate the piston and shutter mechanism. This purely mechanical-hydraulic approach removes ignition risks associated with electrical components, making the valve inherently safer for use with explosive or highly flammable gases while maintaining full active control capability.
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 hydraulic valve design provides reliable, flexible, and safe operation, reducing complexity and space requirements while enabling controlled fluid passage, suitable for use in hazardous environments.
Implementation Method 1
a hydraulic apparatus for moving the shutter element at least between the open and the closed positions. The hydraulic apparatus comprises a hydraulic circuit having at least a portion integrated in the valve body
Data Source
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AI summary
A valve (1) for a reciprocating compressor (21) comprises: a valve body (2) having a seat (3) and a guard (4); a shutter element (6) placed between the seat (3) and the guard (4) and configured to move between a closed position in which the passage of fluid is prevented and an open position in which the passage of fluid is allowed; and an hydraulic apparatus (7) for moving the shutter element (6) between the open and closed positions, the hydraulic apparatus (7) comprising an hydraulic circuit (8) having at least a portion (8a, 8b) integrated in the valve body (2), wherein the hydraulic circuit (8) comprises a first portion (8a) integrated in the seat (3).