The composition and function of plate heat exchanger

What are the components of a plate heat exchanger, and what are the functions of each component?

Plate heat exchanger overview:

Plate heat exchanger is a new type of high-efficiency heat exchanger made up of a series of metal sheets with a certain corrugated shape.

A thin rectangular channel is formed between various plates, and the heat is communicated through half of the plate. Plate heat exchangers are interesting equipment for liquid-liquid and liquid-vapor thermal communication.

It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small footprint, convenient equipment cleaning, wide range of applications, and long service life.

Under the same pressure drop, its heat transfer coefficient is 3-5 times higher than that of tubular heat exchangers, covering an area of ​​one third of that of tubular heat exchangers, and the heat recovery rate can be as high as 90% or more.

The elements of plate heat exchanger:

Plate heat exchanger is mainly composed of heat transfer plates, sealing gaskets, pressure plates at both ends, clamping bolts, brackets, etc.

The functions of the various components of the plate heat exchanger are as follows:

One, heat transfer plate

The heat transfer plate is the primary heat exchange element of the heat exchanger. Usually the corrugation is made into a herringbone shape. According to the different fluid medium, the heat transfer plate has different materials. Most of them are made of stainless steel and titanium.

2. Sealing gasket

The sealing gasket of the plate heat exchanger is mainly used for sealing between the heat exchange plates. The materials are: nitrile rubber, EPDM rubber, fluorine rubber, etc. Different rubbers are selected according to different media.

Three, both ends pressing plate

The two ends of the pressure plate mainly clamp and press all the heat transfer plates to ensure that the fluid medium does not leak.

Four, clamping bolt

Clamping bolts are primarily used to tighten the pressure plates at both ends. Clamping bolts are usually double-threaded. When the bolts are pre-tightened, the torque of the fixed plate is even.

Five, hanger

The first thing is to support the heat exchange plate to make it easy to disassemble, clean and assemble.