Mount Plate Coupling for Reciprocating Pump Fluid End Service

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Solution Overview

Problem

High pressure reciprocating pumps face challenges in securely and stably coupling the fluid end to the power end, limiting compatibility with different fluid ends and requiring extensive disassembly for maintenance, which leads to increased downtime.

Innovation Solution

A mount plate is used to couple the fluid end to the power end, providing spaced relationships and multiple sets of couplers to allow access to the reciprocation bore for servicing without full disconnection, enhancing compatibility and reducing maintenance downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If the fluid end is directly coupled to the power end, then the connection is secure and stable, but access to reciprocation bore for servicing requires complete disassembly

Engineering Contradiction:

Improveaccess to reciprocation boreVSAvoidcoupling structure

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

The coupling structure is segmented into a mount plate and multiple couplers. The mount plate is detachably coupled to the power end, while the fluid end couples to the mount plate through spaced relationships. This segmentation allows the fluid end to be accessed and serviced by detaching only the couplers, not the entire assembly, thus improving ease of repair while maintaining structural integrity.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If traditional mounting points are used, then the power end is securely mounted, but compatibility with different fluid ends is limited

Engineering Contradiction:

Improvecompatibility with fluid endsVSAvoidsecure coupling

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The mount plate serves multiple functions: it provides secure mounting to the power end through first couplers, supports the fluid end through second couplers, and creates spaced relationships for access. This multi-functionality enhances compatibility with different fluid ends while maintaining reliable coupling, as the mount plate acts as a universal interface.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If the fluid end is closely coupled to the power end, then the structure is compact, but maintenance downtime increases due to complete disassembly requirements

Engineering Contradiction:

Improvemaintenance downtimeVSAvoidspace between power end and fluid end

Core Design Contradiction:

ProductivityVSVolume of moving object

Solution Approach 1:

The coupling structure transitions from a fixed, compact arrangement to a dynamic, adjustable configuration. The spaced relationships created by the mount plate and couplers allow for easy detachment and reattachment during maintenance, reducing downtime. The structure maintains compactness during operation but provides flexibility during maintenance, thus improving productivity.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12480483B2Power end mount plate

Publication Date: 2025.11.25 GD ENERGY PRODUCTS LLC

AI summary

A mount plate for removably connecting a fluid end of a reciprocating pump to a power end for a reciprocating pump includes a first set of openings and a second set of openings, each of which extend through the main body. The first set of openings are configured to receive a first set of couplers that couple the mount plate to a front of the power end. The second set of openings are configured to receive a second set of couplers that couple the mount plate to a fluid end in a spaced relationship. The mount plate may also include a third set of openings that extend through the main body and are configured to receive pony rods of the power end.