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How to replace the rubber parts of the plate heat exchanger
Jun 15, 2017

As the application of plate heat exchanger has been expanding, for different media and processes have different temperature, pressure and corrosion resistance requirements. Want to use a clock "universal" gasket to adapt to all the circumstances, is clearly not possible, but should be used for different situations with different materials, gasket. Commonly used gasket section shape for the six rows. Common types of gaskets are natural rubber, chloroprene rubber, EPDM rubber, silicone rubber, fluorine rubber, asbestos fiberboard. Plate heat exchanger gasket in the use of leakage, fracture, aging and other phenomena, to be replaced.

Plate heat exchangers in the replacement of rubber parts is also required according to certain steps, the plate heat exchanger should be used to clean the junction of chemical cleaning agent, chemical cleaning agents must be used to remove the adhesion of the sealant on the sealant and anti-adhesion coating Floor. The adhesive is applied to the middle of each bonding joint. Depending on the width of the gasket, the width of the adhesive is about the width of a match, and then the adhesive is applied to the entire adhesive surface with a brush to make full use of the entire bonding surface.

Depending on the type of adhesive, wait for a certain amount of ventilation and drying time, and then put the gasket, the plate heat exchanger stacked together, with a tightening screw tension, or heavy pressure on the stack On the group of heaters.

1. After chemical cleaning, the chemical medium remaining on the surface of the plate heat exchanger or the like is thoroughly removed by a high pressure purge device.

Second, the reuse of performance testing and testing. Inspect the wall thickness of the heat exchanger and the pipe in the presence of corrosion.

Third, the heat exchanger plate coated with fluorescent test agent, in the ultraviolet light irradiation to check whether there are small cracks and corrosion holes, and re-clean. In addition, we should also focus on checking the case of sealing groove, if necessary, to dress.

Fourth, the removal of aging seals, according to different dirt, and Haug Chemical Co., Ltd. jointly developed with the acid - alkali cleaning pool for chemical cleaning, cleaning parts of the surface will not be chemical (such as gasoline) corrosion damage The

5, for the adhesive gasket, will completely remove the remaining material, the use of reconcile adhesive adhesive re-bonding, re-combination of heat exchanger chipset in a special fixture clamping, so that curing agent; In the heat insulation, in order to achieve the best bonding effect. For non-bonded gaskets, the gasket is secured to the heat sink using a different device.

Six, the bonding position of each plate heat sink and bonding quality to be tested, according to the order of installation classification, and then carefully assembled plate heat sinks carefully.