Heat exchange system and method of assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for assembling and installing coil wound heat exchangers are time-consuming and require multiple sets of structures for support during different stages, leading to extended construction timelines and outdoor installation at plant sites.
Innovation Solution
A method involving the formation of a coil wound mandrel, attaching a heat exchanger shell to a module frame with connecting members, telescoping the mandrel into the shell, and transporting and mounting the module in a vertical orientation, using a single set of saddles for support throughout the process, including transportation and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional assembly methods are used with multiple sets of structures for support during different stages, then the heat exchanger can be properly supported during assembly and transport, but the construction timeline is extended and manufacturing duration increases
Solution Approach 1:
The module frame is designed to serve multiple functions: it provides structural support during assembly, acts as a transport fixture, and serves as the final support structure at the installation site. This multi-functional design eliminates the need for separate shop saddles, transport saddles, and support frames, thereby reducing the overall construction timeline while maintaining reliable support throughout all stages.
Solution Approach 2:
The invention merges the support frame with the module frame, combining what were previously separate structures into a single integrated assembly. This consolidation allows the same structure to fulfill support requirements during manufacturing, transport, and installation, eliminating the sequential deployment of multiple support structures and reducing time losses between stages.
2Strength
If the heat exchanger is assembled and erected at the plant site with support frame construction, then proper structural support is ensured, but piping connections and electrical connections must be installed afterward extending the timeline
Solution Approach 1:
The module frame is pre-assembled with all piping connections, electrical connections, and instrumentation installed before the heat exchanger is placed into it. This preliminary preparation of utilities allows for concurrent work during transport and installation, rather than sequential work, significantly improving installation efficiency while maintaining structural integrity.
3Reliability
If three different sets of structures are used to support the heat exchanger during assembly, transport, and installation, then the heat exchanger is properly supported at each stage, but the device complexity and manufacturing cost increase
Solution Approach 1:
The module frame is designed as a universal support structure that performs the functions of shop saddles, transport saddles, and the final support frame. By creating a single structure that can accommodate all support requirements through its modular and adaptable design, the invention reduces device complexity while maintaining support adequacy throughout the entire lifecycle from assembly to installation.
4Stability of the object's composition
If the heat exchanger is transported horizontally and then erected vertically at the plant site, then transport stability is ensured, but additional lifting equipment and time are required for the erection process
Solution Approach 1:
The module frame is designed to maintain the heat exchanger in a consistent operational orientation throughout transport and installation. By configuring the transport fixtures and support points to keep the shell in its intended operational position, the invention eliminates the need for time-consuming reorientation and erection operations, reducing erection time while maintaining transport stability through proper structural bracing.
Data Source
AI summary
A method of constructing a coil wound heat exchange module and transporting and installing the coil wound heat exchange module at a plant site, such as an natural gas liquefaction plant. A module frame is constructed and attached to a heat exchanger shell prior to telescoping of a coil wound mandrel into the shell. The module frame includes a lug and two saddles that remain attached to the shell throughout the process and when the heat exchanger is operated. The lug and saddles are constructed and located to stabilize the shell during construction, telescoping and transport (when in a horizontal orientation), and when the shell is installed at the plant site (in a vertical orientation). The lugs and saddles are adapted to allow for thermal expansion and contraction of the shell when it is transitioned from ambient to operating temperature and vice versa.