How to review heat exchanger assembly drawings
Thread Content
The manufacturer sent us the assembly drawings for review; my boss handed them to me and told me to take care of it so that production could start at the manufacturer’s facility. I don’t know how to do this I’d appreciate some advice from everyone
If it’s a device that has already been purchased, check whether its size conflicts with the space where you plan to install it. Generally, no problems should arise after conducting an inspection; if there are parts of the drawings that are unclear, ask the manufacturer for clarification. If you really don’t understand something, have the manufacturer assist with the installation.
1. If you provide the technical requirements and place an order for the complete unit, then your main task is to verify the relevant connection positions and dimensions of the external connections, such as inlet and outlet pipes, foot bolts, electrical wiring, and panel operations. 2. If you provide the complete set of technologies and outsource the production, then you need to be very detailed; in addition to what has been mentioned above, it is also necessary to evaluate the internal structure of the equipment as well as its performance after use.
It’s too simple; a heat exchanger is just a simple device – you can figure it out by asking an experienced person
Under normal circumstances, whether there are original equipment drawings or not, on-site measurement, drawing, and verification are required, with the on-site survey data and the data on the nameplate taking precedence.
Drawing review: 1. Design data sheet – check whether all the information is present, including temperature, pressure, medium, inspection requirements, and welding criteria. Hydraulic test pressure. Paint coating: the main materials are complete enough, meeting Gb151 and tolerance specifications. Whether the welding materials meet the requirements. 2. The takeover dimensions shall meet the requirements of the process design. 3. Are the main dimensions of the drawing complete? Meets the requirements. External dimensions, orientation of the connections, and positional dimensions. 3. For welded structures, is the joint diagram complete? 4 For pressure vessels, is the design qualification seal complete? 5. Are the part numbers in the detail list and the main view complete, and are there any contradictions or omissions? 6 The materials used, and whether the standard components meet the latest requirements and manufacturing standards. If you are an entity using it, the key factors to consider are the design process parameters, temperature, and pressure. Whether the heat exchange area, the materials used for the tube side and shell side, the outer diameter of the heat exchange tubes, and the wall thickness meet the process requirements.
There should also be supports; it is necessary to check whether the ear mounts are suitable for on-site installation, as well as the dimensions and position of the connections to ensure they match those in the actual installation site
It seems that you are the entity using the equipment; it is you who specify the process requirements and commission the manufacturing factory to carry out the design and production. Please confirm once the manufacturer has completed the design. If that is the case, it should be carried out in two main areas: process review and design review. Generally, manufacturing plants lack strong technical capabilities in process design, which should be carefully examined.
1. Check whether the assembly drawings are complete; based on the mutually agreed technical agreements, verify that everything you requested is reflected in their drawings. 2. Inspect the equipment according to the dimensions shown in the drawings, checking the dimensions, material, and orientation of the connections. If all requirements are met, it can be installed and used.
Is it a conditional graph confirmation? It mainly verifies the design parameters (pressure, temperature, heat exchange area, etc.), as well as whether the installation dimensions match the process flow diagram (or on-site surveys).
Judging from the poster’s description, it seems the poster is the user entity. The main task is to verify whether the design parameters of the assembly drawings (temperature, pressure, heat exchange area, and materials for the tube and shell sides) meet the required specifications ； Check again whether the standards for the takeover flange (size, pressure rating) and its orientation meet the installation requirements ； Manufacturers can only produce with confidence after obtaining confirmation from the user unit!