It's the flat, flanged cover on the front (and sometimes the rear) of a shell & tube heat exchanger.

a plate heat exchanger is a metal plate which is will be in contact with another item eg air or another metal object to move heat from one to another

The plate heat exchanger has the characteristics of high heat transfer coefficient, small pressure drop, compact structure, light weight, small footprint, convenient area and process combination, strong versatility of parts, wide selection of materials, and simple completion of large-scale production. Widely used in the fields of food, machinery, metallurgy, petrochemicals and ships.

In order to ensure the normal operation of the plate heat exchanger, it is particularly important to extend the service life of the plate heat exchanger components (such as plates and rubber pads), and to understand the problems and the causes of the plate heat exchanger and the treatment methods.

Brazed Plate Heat Exchanger

Brazed Plate Heat Exchanger Model ZL20B

Problem:

The plate heat exchanger has leakage (small amount, water droplets are not continuous) and leakage (large amount, water droplets are continuous). The primary parts of external leakage are the seal between the plate and the plate, the position where the plate seals the leakage groove, and the inner side of the end plate and the compression plate.

The reason:

The clamping scale is not in place, the scale across the ground is not uniform (the ground scale error should not be greater than 3 mm), or the clamping bolt is loose. Part of the gasket is separated from the sealing groove, the main sealing surface of the gasket is dirty, the gasket is damaged or the gasket is aging. The plate is deformed, and the misalignment causes the running mat.

Solution:

In the state of no pressure, clamp the equipment from the beginning according to the clamping scale supplied by the manufacturer. The scale should be uniform and common. The error of the compression scale should not exceed ± 0.2N (mm) (N. is the total number of plates) The parallelism should be kept within 2 mm. Make a symbol on the leakage part, and then check the heat exchangers one by one, and install or replace the gaskets and plates from scratch.

YOJO can provide a variety of heat exchange equipment solutions for the failure of the plate heat exchanger. For leakage problems of the plate heat exchanger, if there are other questions, please contact YOJO.

Tag: Heat exchange equipment solution, Heat exchange equipment, plate heat exchanger leakage

Plate heat exchangers are used in combination boilers, also sometimes referred to a 'combi-boilers'. The plate heat exchanger is found inside the hot water section and uses metal plates to move heat between two fluids.

Refluxing solvent is one way but an ultrasonic batch is better.