Weight Assembly Locking Structure to Prevent Spark-Causing Motion

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Solution Overview

Problem

Vibratory separators in the oil and gas industry face the challenge of relative motion within the weight assembly, which can create sparks that may ignite flammable gases or liquids, posing a risk of ignition.

Innovation Solution

A lock assembly is introduced, comprising a latch with inner and outer protrusions and spacers, which are positioned between weight plates and a weight arm to prevent relative movement, thereby reducing the likelihood of spark generation. The lock assembly includes fasteners and nuts that secure the latch in place, ensuring the weight plates and arm do not move relative to each other.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the weight assembly components are allowed to move relative to each other during operation, then the vibratory separator can maintain flexibility and ease of assembly, but relative motion creates sparks that may ignite flammable gases or liquids

Engineering Contradiction:
Improveease of assemblyVSAvoidspark creation
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The lock assembly is pre-configured with spacers positioned between the weight plates and latch, and fasteners prepared for insertion. This preliminary arrangement allows the components to be quickly secured without complex alignment procedures during assembly, while ensuring that the weight arm, weight plates, and latch are firmly locked together to prevent any relative motion that could create sparks

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a lock assembly is added to prevent relative motion between weight assembly components, then the risk of spark creation is reduced, but the device complexity increases

Engineering Contradiction:
ImprovesafetyVSAvoidassembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is divided into distinct functional segments: spacers that position components, a latch that engages with the weight arm, and fasteners that secure the assembly. This segmentation allows each component to perform its specific function independently, ensuring reliable prevention of relative motion while maintaining a relatively simple overall structure that is easy to understand and maintain

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lock assembly utilizes a nested configuration where spacers are positioned between the weight plates and latch, the latch engages within the weight arm opening, and fasteners pass through multiple components to secure them together. This nested arrangement compactly integrates multiple locking functions into a single integrated assembly, preventing relative motion between weight assembly components while avoiding excessive structural complexity

Inventive Principle:
Principle #7Nested doll (Nesting)

3Stability of the object's composition

If fasteners and nuts are used to secure the latch in place, then the weight plates and arm are prevented from moving relative to each other, but the manufacturing and assembly process becomes more complex

Engineering Contradiction:
Improvecomponent stabilityVSAvoidmanufacturing process
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The fastener and nut are used as a combined securing mechanism where the fastener passes through the weight plates and latch, and the nut secures it on the other side. This combined approach provides simple, reliable stabilization of the weight assembly components without requiring complex welding, threading, or specialized joining processes, maintaining ease of manufacture while ensuring component stability

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11925958B2System and method for locking a weight assembly
Publication Date: 2024.03.12 SCHLUMBERGER TECH CORP
  • US11925958B2 patent drawing
  • US11925958B2 patent drawing
  • US11925958B2 patent drawing

AI summary

A lock assembly for a vibratory separator includes a latch. The latch includes a first inner protrusion and a first outer protrusion. The first outer protrusion defines a first outer protrusion opening. The lock assembly also includes a first spacer. The first spacer includes a first fastener that is configured to be inserted into the first outer protrusion opening.