Valve Cage Assembly Removal Device with Anchoring Plate
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Solution Overview
Problem
The removal of valve and cage assemblies from machine casings, particularly in large reciprocating compressors, is cumbersome and hazardous due to their weight and the risk of accidental sliding under gravity, requiring safer and more efficient methods for disassembly.
Innovation Solution
A device comprising an anchoring plate, a terminal plate, a sliding mechanism, and a connecting arrangement that allows for the controlled extraction of the valve and cage assembly from the housing, using a tie-rod and anti-slip plug to secure and lift the assembly, reducing manual effort and preventing accidental slipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual removal of valve and cage assembly is performed, then disassembly can be completed with simple tools, but operator safety is compromised due to heavy weight and risk of accidental sliding
Solution Approach 1:
The patent introduces a removal device as an intermediary tool between the operator and the heavy valve and cage assembly. This device includes a anchoring plate, terminal plate, and slide mechanism that collectively serve as a mediator to safely extract the assembly without direct manual handling, thus improving operator safety while maintaining reasonable device complexity
Solution Approach 2:
The removal device is segmented into distinct functional components: an anchoring plate for securing to the machine casing, a terminal plate for connecting to the valve assembly, and a slide mechanism for controlled extraction. This segmentation allows each component to perform its specific function efficiently while keeping the overall device manageable in complexity
2Ease of operation
If heavy valve and cage assembly is manually extracted, then no special equipment is needed, but operator effort and physical strain increase significantly
Solution Approach 1:
The removal device counteracts the weight of the valve and cage assembly through its anchoring mechanism and controlled extraction system. The anchoring plate secures to the machine casing while the slide mechanism provides controlled movement, effectively counterbalancing the gravitational force on the heavy assembly and reducing operator physical strain
Solution Approach 2:
The removal device acts as an intermediary that transfers the extraction force from the operator to the heavy assembly through mechanical advantage. The connected components work together to amplify the operator's input force, making it easier to move the heavy valve and cage assembly without direct manual lifting or pulling
3Reliability
If valve and cage assembly is removed without anchoring device, then removal process is simpler, but risk of accidental sliding under gravity increases
Solution Approach 1:
The anchoring plate is designed to be securely attached to the machine casing before the extraction process begins. This preliminary anchoring action establishes a stable base that prevents accidental sliding during removal, while the overall anchoring system remains relatively simple in design
Solution Approach 2:
The anchoring plate serves as an intermediary element that interfaces between the machine casing and the removal device. It provides a secure attachment point that enables controlled extraction while preventing uncontrolled sliding, thus improving reliability without requiring a complex anchoring system
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 device enables safe and efficient removal of valve and cage assemblies by distributing the weight and preventing accidental sliding, thus simplifying the maintenance process and reducing operator risk.
Implementation Method 1
a slide (107) arranged for movement between the anchoring plate (101) and the terminal plate (103)
Data Source
AI summary
The device comprises an anchoring plate configured for anchoring the device to a machine casing. The device further comprises a terminal plate connected to the anchoring plate at a distance there from, and a slide arranged for movement between the anchoring plate and the terminal plate. The device further includes a connecting arrangement configured for connecting the slide to a valve and cage assembly to be removed from the machine.