Plate heat exchanger maintenance

We know that even the better performance of plate heat exchanger, in the use of a long time, there will be a variety of problems, especially his seal.

Next, we briefly introduce the plate heat exchanger in the maintenance of attention

First of all, we must first understand the plate heat exchanger gasket has an important impact on the service life of the factors:

1 continuity of heat exchanger

2 heat dissipation medium and corrosive properties of the cleaning agent used;

3 maximum operating temperature;

4 maximum working pressure;

5 because of too much pressure and uneven pressure and make the elastic gasket stress;

6 natural aging.

The working temperature and pressure of the heat exchanger are related to the elastic gasket. If the gasket loses its elasticity, the heat exchanger will leak. In general, the sealing performance of the heat exchanger is adjusted, the bolt of the plate heat exchanger is screwed, and the elastic gasket between the heat exchangers is adjusted to solve the problem of water leakage. In the heat exchanger nameplate or parts of the diagram, will give the corresponding stress adjustment range, tighten plate heat exchanger should not be lower than the scope of the specified value.

Below we can through 6 aspects of heat exchanger maintenance:

1 regularly check the adhesion of the rubber pad and the heat transfer film is closely linked to the integrity of the rubber gasket to avoid the emergence of the rubber gasket due to debonding or damage caused by leakage.

2 regularly check the heat exchanger nut and the upper and lower guide rod, and add lubricating oil.

3 the person in charge is responsible for the regulation of the instrument, and strictly in accordance with the operating rules of the operation and maintenance.

4 the replacement or repair of degumming part, the heat transfer sheet is removed, remove the old washer, or in the groove of the heat transfer of degumming glue with fine sandpaper to wipe, and then carbon tetrachloride or trichloroethylene solvent in the groove of the oil wipe, and then a new rubber washer with fine sandpaper to rub back hair, also use carbon tetrachloride or trichloroethylene solvent oil rub do. Then in the groove and the rubber gasket thin back are applied with a layer of glue, to be slightly dry, not sticky fingers, but still sticky degree, is flat rubber gasket is embedded in the groove, around, deposited a layer of talcum powder, with the coming of heat transfer equipment rack gently clamping pieces.

5 pay attention to the last time the pressure of the scale position, re compression of heat transfer film is, should be the last time the scale is basically the same, so as not to cause the rubber gasket over extrusion, rubber gasket life is reduced.

6 in order to avoid uneven gap, affect the heat transfer effect, replace the heat transfer piece of rubber gasket should be replaced.

In the beginning of the operation of the use of water circulation, there may be a slight leakage, the temperature rose to sterilization temperature, the leakage will disappear. If the leakage does not stop, the heat transfer plate can be pressed again. If it still does not work, it is necessary to open the inspection of the rubber gasket, it may be the end of the heat transfer plate number in the order of the film, it should be corrected.