Plate heat exchanger plate and rubber gasket aging causes and effects

The plate heat exchanger has the advantages of high heat transfer efficiency, compact structure and flexible operation, which has been the rapid development and increasingly widespread application, but many users have encountered in the use of plate heat exchanger plate rubber aging, the following small series to introduce the reasons leading to the aging of the heat exchanger plate rubber.

1. Size of the impact

The plate heat exchanger is composed of a fixed cover plate, a removable cover plate and a set of plates. The principle of the structure is that the plates are pressed together by means of a screw between the front and back plates, which also generates the necessary pressure on the seal. Based on this structure of the heat exchanger, during the heat exchanger compacting process, the movable cover plate is continuously compacted towards the fixed cover plate, resulting in The plates in the vicinity of the moving cover are the first to be compressed. The greater the number of plates to be compressed, the greater the pre-stressing. Due to this structural characteristic, the number of plates also affects the service life of the heat exchanger seal under the same operating conditions.

2. The influence of location

The use of plate heat exchanger seals is influenced not only by light and weather, but also by the surrounding environment. This is why heat exchangers that are placed outdoors have a different seal life than heat exchangers that are placed indoors. In order to reduce the influence of the environment, it is very effective to use a protective cover or insulation on the outside of the plate heat exchanger.

3.Influence of operating conditions

The effect of temperature and pressure variations on the service life of a seal should never be underestimated. In the case of a change in conditions, the stress peaks generated at various parts of the seal have a more negative effect on the internal tissues of the material than in the long term. A constant load is even more deadly. Likewise, start-stop procedures or long downtimes can have a negative impact on seal life. From an equipment point of view, if the process requires frequent start-stop procedures, a spring device between the tie rods and the removable cover can be installed. In order to reduce the effect of temperature load changes on the seal.

4. Influence of the internal flow medium.

The medium flowing through the plate heat exchanger has the greatest influence on the life of the seal. The selection of a suitable seal cannot always be perfect when considering the fluid substance and operating conditions. The mixing of cooling and heating additives, inhibitors, and other substances that tend to penetrate into the seal and thereby Caused to the destruction of its physical properties.

The above is the editor for you to introduce the reasons leading to the aging of the heat exchanger plate adhesive gasket, I hope it can help you, if you have other aspects want to understand, can come to consult us.