Solenoid Valve Assembly for Remote Extraction Check Valve Testing
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Solution Overview
Problem
Existing solenoid valves for extraction check valves require local operation for activity testing, limiting their ability to meet the remote intelligent operation requirements of smart power plants and leading to potential safety issues due to spring fatigue and jamming.
Innovation Solution
A solenoid valve system comprising a main valve, first and second auxiliary valves, and valve bodies with specific air passages and drive coils, allowing for both local and remote operation through hand-operated and solenoid valve mechanisms, with a heat dissipation grille for extended service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hand-operated valve is added for local activity testing, then the extraction check valve can be tested locally, but the remote intelligent operation requirement cannot be met
Solution Approach 1:
The solenoid valve is designed to perform multiple functions: it can be operated locally through the hand-operated valve for maintenance and testing, and remotely through the control room for normal operation. This multi-functionality resolves the contradiction by making the same valve system adaptable to both local and remote operation modes.
Solution Approach 2:
The solenoid valve acts as an intermediary device between the manual control system and the automated control system. It receives control signals from either the hand-operated valve (local) or the control room (remote) and executes the valve opening/closing actions, thereby bridging the gap between local and remote operation requirements.
2Ease of operation
If the single-acting cylinder is used to switch off the extraction check valve, then the valve can be controlled, but spring fatigue and loss of elasticity occur after long-term compression
Solution Approach 1:
The activity testing function allows the single-acting cylinder to undergo periodic motion by repeatedly opening and closing the valve. This periodic action prevents the spring from remaining in a continuously compressed state, thereby reducing fatigue accumulation and extending spring service life while maintaining valve control capability.
Solution Approach 2:
The activity testing feature enables preliminary detection of spring health status before actual failure occurs. By periodically activating the valve, operators can monitor spring performance and replace it proactively, preventing sudden failures due to spring fatigue.
3Stability of the object's composition
If the single-acting cylinder remains inactive for long periods, then the system is stable, but the cylinder becomes prone to jams
Solution Approach 1:
The activity testing mechanism provides periodic activation of the single-acting cylinder, preventing it from remaining in a static inactive state for extended periods. This periodic motion prevents jamming of moving parts while maintaining system stability through controlled, scheduled operations.
Solution Approach 2:
The activity testing function serves as a self-diagnostic and self-maintenance feature of the system. By automatically or manually initiating periodic valve operations, the system prevents its own degradation from inactivity without requiring external intervention, thereby maintaining both stability and reliability.
4Reliability
If activity testing is performed frequently to prevent spring failure, then reliability is improved, but operational complexity increases
Solution Approach 1:
The activity testing system is designed to be self-service oriented, where the testing operation can be initiated through a simple manual valve operation or automated control sequence. This simplifies the testing process and reduces operational complexity while maintaining frequent testing schedules to ensure spring reliability.
Solution Approach 2:
The solenoid valve's multi-functionality allows it to serve both as the primary control valve and as the activity testing mechanism. This eliminates the need for separate testing equipment or complex testing procedures, thereby reducing operational complexity while maintaining reliability through integrated functionality.
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 remote and local activity testing of extraction check valves, enhancing safety and reliability by preventing spring fatigue and jamming, and meeting the operational needs of smart power plants with multiple functions and improved convenience.
Implementation Method 1
a first drive coil, wherein the first drive coil is disposed on one side of the main valve body, and the first drive coil is used for driving the main valve core to move; a second drive coil, wherein the second drive coil is disposed on one side of the auxiliary valve body, and the second drive coil is used for driving the second auxiliary valve core to move
Implementation Method 2
a heat dissipation grille is provided on the auxiliary valve body
Data Source
AI summary
A solenoid valve includes a main valve, a first auxiliary valve, a second auxiliary valve, a main valve body, and an auxiliary valve body. The main and auxiliary valve bodies are axially parallel and detachably connected. The main valve is mounted on the main valve body, the first and second auxiliary valves are mounted on the auxiliary valve body, which is provided with an air inlet, a cylinder port and an air discharging port. The air inlet communicates with the main valve through a first air passage. The cylinder port is sequentially in communication with the first and second auxiliary valves and the main valve through a second air passage. The air discharging port sequentially communicates with the first and second auxiliary valves and the main valve through a third air passage. The main and second auxiliary valves are solenoid valves. The first auxiliary valve is a hand-operated valve.