Compact Guillotine Valve Structure for Online Maintenance
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Solution Overview
Problem
Current guillotine valves in the mining industry require process stoppages for maintenance and repair, leading to increased downtime and costs, as they are not designed for online maintenance due to space constraints and wear issues from fluid abrasion.
Innovation Solution
A compact guillotine valve design with a cage attached to the tank, featuring a gate, movement transmission means, anti-vibration head, and guide means, allowing axial movement and tight fit, enabling online maintenance and assembly/disassembly without stopping the process, and incorporating rubber or polymer coatings for abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional guillotine valves are used in mining processes, then fluid control is achieved, but maintenance requires process stoppage leading to increased downtime
Solution Approach 1:
The valve is divided into separate modular components including the gate assembly, drive mechanism, and cage structure. This segmentation allows individual components to be removed and maintained independently while the valve remains installed in the process line, enabling online maintenance without complete process shutdown.
Solution Approach 2:
A maintenance access mechanism is introduced as an intermediary component that facilitates the removal and installation of the gate assembly. This access mechanism allows technicians to service the valve components through a dedicated access path while the valve remains in its operational position within the process system.
2Duration of action of stationary object
If valve components are protected with rubber coatings to reduce abrasion, then component durability improves, but maintenance complexity increases due to coating application requirements
Solution Approach 1:
Rubber or polymer coatings are applied selectively to specific high-wear areas of the valve components such as the gate edges and seal surfaces. This localized coating approach provides abrasion resistance where most needed while avoiding the complexity of coating entire components, maintaining simplicity in the overall system.
3Volume of moving object
If a compact valve design is used to reduce installation space, then space utilization improves, but maintenance accessibility deteriorates
Solution Approach 1:
The compact valve design maintains small overall dimensions while incorporating modular segmentation that allows the gate assembly to be independently accessed. The segmented structure enables maintenance personnel to reach and service internal components through accessible points on the compact exterior, reconciling small size with maintenance accessibility.
Solution Approach 2:
The cage structure serves multiple functions simultaneously: it provides the structural framework for the compact valve body, acts as a mounting structure for the gate assembly, and functions as a maintenance access interface. This multi-functionality allows the compact design to incorporate built-in maintenance capabilities without requiring additional external components.
Data Source
AI summary
A guillotine valve for controlling the passage of fluids, such as pulps, tailings and sludge in atmospheric systems, comprising at least one cage attached to the inlet or outlet of at least one tank; at least one gate which controls the flow of the at least one fluid; at least one movement transmission means which allows the at least one gate to be moved between at least one open position and at least one closed position; at least one drive means which allows the at least one movement transmission means to be operated; at least one anti-vibration head which joins the at least one gate with the at least one movement transmission means allowing the axial movement of the at least one gate; and at least one guide means arranged in the same direction as the at least one movement transmission means which allows a tight fit between said at least one guide means and the at least one cage.