Compression Valve Seat Puller Assembly for High-Force Removal
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Solution Overview
Problem
Existing valve seat pullers for reciprocating pumps require high forces, often exceeding 100 tons, to remove valve seats, leading to tool failure, increased maintenance costs, and safety risks due to potential component ejection.
Innovation Solution
A seat puller system designed with a compression-based mechanism, featuring a unique expander component that prevents jaw deflection and a lower retaining nut that applies compressive forces, reducing the number of components and eliminating the need for specialized tooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high forces (exceeding 100 tons) are applied to remove valve seats using traditional hydraulic jack and valve seat puller, then the valve seat can be removed, but the tool fails and safety risks increase
Solution Approach 1:
The patent inverts the traditional approach by using a compression-based mechanism instead of tension-based hydraulic jack. The lower retaining nut applies compressive forces to the valve seat, and the expander component expands the jaw assembly from within to grip and remove the valve seat, eliminating the need for high-force external hydraulic equipment
Solution Approach 2:
The valve seat puller is divided into distinct functional components: a stem, an expander component with threaded section, and a jaw assembly with multiple segments. This segmentation allows each component to perform its specific function efficiently and enables easier maintenance or replacement of individual parts
2Force
If traditional hydraulic jack and valve seat puller are used, then valve seat removal is achieved, but device complexity increases and specialized tooling is required
Solution Approach 1:
The patent combines the functions of the hydraulic jack, valve seat puller, and jaw assembly into a single integrated stem assembly. The stem includes the expander component and jaw assembly as unified parts, eliminating the need for separate hydraulic equipment and reducing overall system complexity
Solution Approach 2:
The stem assembly serves multiple functions: it provides structural support, applies compressive forces through the lower retaining nut, and enables jaw expansion through the threaded expander component. This multi-functionality reduces the number of separate components needed
3Force
If traditional valve seat puller is used, then valve seat removal is achieved, but maintenance costs increase and lifespan is reduced
Solution Approach 1:
The expander component's threaded design allows it to self-adjust and self-lock during the valve seat removal process. The expansion mechanism automatically grips the valve seat with increasing force as the stem is inserted, eliminating the need for external hydraulic systems that require maintenance
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 solution provides a robust, longer-lasting valve seat puller with improved safety, reduced maintenance costs, and extended lifespan, while also simplifying maintenance and replacement processes.
Implementation Method 1
A seat puller system designed with a compression-based mechanism, featuring a unique expander component that prevents jaw deflection
Data Source
AI summary
A seat puller system, a reciprocating pump valve seat puller assembly, process, and method of use are presented. The disclosed valve seat puller is configured and designed to provide pump owners and service companies with a cost-effective solution that is more robust and has an increased lifespan when compared to those in the art. The increased strength of the disclosure reduces potential safety risks associated with the use of the tool, also disclosed. The seat puller is limited in components, further enhancing cost effectiveness for installation and maintenance.