Compressor Bundle Insertion Device Using Short Threaded Rod
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing compressor inserting and removing devices require puller rods longer than the bundle length, resulting in a larger device size and inefficiencies in space usage during insertion and removal operations.
Innovation Solution
A compact inserting and removing device featuring an intermediate supporting portion, a threaded rod, and a nut system that allows for bundle movement within the compressor casing using a threaded rod shorter than the bundle length, with additional support structures like curved plates and rib plates for enhanced rigidity and weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a puller rod longer than the bundle length is used to insert and remove the bundle, then the bundle can be securely gripped and moved, but the device size increases and working space requirement increases
Solution Approach 1:
The support function is segmented between the intermediate supporting portion (which contacts the bundle) and the compressor casing (which provides the reaction point). This allows the threaded rod to be shorter than the bundle length while still achieving secure gripping and movement through the distributed support structure.
Solution Approach 2:
The intermediate supporting portion acts as an intermediary component that transfers force between the threaded rod and the bundle. It provides the necessary mechanical advantage and force distribution to move the bundle reliably without requiring a puller rod longer than the bundle itself.
2Length of moving object
If a threaded rod shorter than the bundle length is used, then the device size is reduced, but it becomes difficult to achieve sufficient support and movement capability
Solution Approach 1:
The force transmission path is segmented into multiple components: the threaded rod provides mechanical advantage through threading, the intermediate supporting portion distributes and redirects force along the bundle, and the compressor casing provides a fixed reaction point. This segmented force transmission enables effective bundle movement with a shorter threaded rod.
Solution Approach 2:
The intermediate supporting portion extends in the radial direction from the bundle surface, creating a three-dimensional force transmission path. This allows the threaded rod to engage the bundle at one location while distributing forces through the intermediate support structure to multiple contact points, effectively multiplying the movement capability beyond what a simple linear puller rod could achieve.
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 a smaller-sized compressor inserting and removing device that can efficiently move bundles within the compressor casing using a shorter threaded rod, reducing the required working space and improving operational efficiency.
Implementation Method 1
a threaded rod which extends to be parallel to the horizontal axis, has a distal end fixed to a fixing hole formed on an end surface on the insertion side of the compressor casing, and is inserted into a through-hole formed in the intermediate supporting portion; and a nut which is attached to the threaded rod so as to come into contact with the intermediate supporting portion
Data Source
AI summary
This compressor inserting and removing device (1) is provided with: an intermediate supporting portion (4) which supports a bundle (32), prior to insertion from a horizontal axis (L1) direction into a compressor casing (34) taking the form of a tube centered around the horizontal axis (L1), from an outer peripheral side of the bundle (32), at a position that is closer to the insertion side of the bundle (32) than an end portion (32d) on the side opposite to the insertion side of the bundle (32); a moving portion (10) which makes it possible for the intermediate supporting portion (4) and the compressor casing (34) to move relative to one another in the horizontal axis L1 direction; a threaded rod (12) which extends parallel to the horizontal axis (L1), and which is fixed at a distal end (12a) thereof to a fixing hole (34b) formed in an end surface (34a) at the insertion side of the compressor casing (34), and which passes through through-holes (6a and 7a) formed in the intermediate supporting portion (4); and a nut (13) which is attached to the threaded rod (12), in such a way as to be capable of coming into contact with the intermediate supporting portion (4), from the side that is closer to the rear end portion (32d) of the bundle (32) than the intermediate supporting portion (4).