Thyristor Radiator Damping Resistor Maintenance
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Solution Overview
Problem
Current DC converter valve maintenance is challenging due to the need to discharge cooling water for repairing damping resistors, especially when rod resistors interfere with cooling water pipelines, increasing maintenance difficulty and time.
Innovation Solution
A thyristor assembly radiator design where damping resistors are integrated within the radiator, with water feeding and discharging ports connected via pipelines, reducing the number of joints and allowing for maintenance without disassembling the cooling water pipeline by using right-angled and bent pipelines for odd and even numbered radiators respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If rod resistors are disposed inside through holes in the thyristor radiator, then the number of joints in the cooling system is reduced, but the rod resistors may interfere with the cooling water pipeline
Solution Approach 1:
The damping resistor maintenance function is segmented from the cooling water pipeline disassembly operation. By designing the pipeline to remain connected during resistor replacement, the maintenance task is isolated to only the resistor component, not the entire cooling system.
Solution Approach 2:
The damping resistor is extracted as a separately replaceable component from the radiator assembly. The through-hole design allows the resistor to be removed and replaced independently while the radiator and cooling pipeline remain intact and connected.
2Ease of repair
If cooling water is discharged completely before maintenance, then the damping resistor can be maintained, but the maintenance process becomes time consuming and difficult
Solution Approach 1:
The cooling water pipeline is pre-configured with bypass capabilities and connection designs that allow resistor maintenance to proceed without requiring complete system shutdown or water discharge. The pipeline layout anticipates maintenance needs and maintains flow paths during component replacement.
3Temperature
If the damping resistor is a water resistor in direct contact with cooling water, then heat dissipation is effective, but maintenance requires complete discharge of cooling water
Solution Approach 1:
The water resistor is segmented into a replaceable module that can be accessed and replaced without affecting the cooling water system. The resistor leads pass through the radiator housing with sealed connections, allowing the resistor element to be independently replaced while maintaining the cooling water circuit integrity.
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
This design reduces the risk of leakage, improves operation reliability, and simplifies maintenance by eliminating the need to disassemble the water pipe during damping resistor maintenance, thereby reducing maintenance time and complexity.
Implementation Method 1
each of the radiators (2) includes a housing (21), a water feeding port (3) is provided at an upper part of the housing (21), a water discharging port (4) is provided at a lower part
Implementation Method 2
through holes (5 to 10) in the housing (21) of the radiator for accommodating damping resistors are provided between the water feeding port (3) and the water discharging port (4)
Data Source
Figure 1~3
AI summary
A thyristor assembly radiator for a DC converter valve. A water discharging port of an Nth radiator is communicated with a water discharging port of an (N-2)th radiator. A water feeding port of the Nth radiator is communicated with a water feeding port of an (N+2)th radiator. Or, a water feeding port of the Nth radiator is communicated with a water feeding port of the (N-2)th radiator, and a water discharging port of the Nth radiator is communicated with a water discharging port of the (N+2)th radiator. A water discharging port of an Mth radiator is communicated with a water discharging port of an (M-2)th radiator, and a water feeding port of the Mth radiator is communicated with a water feeding port of an (M+2)th radiator, or a water feeding port of an Mth radiator is communicated with a water feeding port of the (M-2)th radiator, and a water discharging port of the Mth radiator is communicated with a water discharging port of an (M+2)th radiator. Water feeding ports of the last two radiators are communicated. According to the radiator, the number of joints of a cooling system is reduced, the risk of leakage is lowered, the operation reliability of a converter valve is improved, the maintenance difficulty is lowered, and the maintenance time is shortened.