supplySpiral plate heat exchanger

I. Product introduction ·

The spiral plate heat exchanger structure is simple and precise, it is made of two or four long metal sheets coiled around the same center, and the distance column is welded between the plate and the plate, forming two or four spiral flow channels that are completely upright respectively, and the flow channel section is rectangular.

The spiral plate heat exchangers produced by the company have customers all over the country, involving oil refining, alcohol, food, pharmaceutical, paper making, metallurgy, chemical, petrochemical, electric power, heating and sewage treatment industries. For heating, cooling, evaporation, condensation and other processes.

1. The flow channel is easy to flow chart turbulence, and the heat transfer coefficient is high because the flow channel is concentric and has a certain number of distance columns. In this way, the fluid flows in the flow channel, under the action of centrifugal force, the Reynolds number can also produce turbulence, through this optimized flow mode, the heat exchange capacity of the fluid has been improved, and compared with the shell and tube heat exchanger, the heat transfer coefficient of the spiral plate heat exchanger can be increased by 50%-80%, and the possibility of particle deposition is reduced. 2. It is not easy to block in the flow channel because of the single flow channel structure, coupled with its high allowable flow rate (the allowable design flow rate for liquid is about 2m/s, for gas is about 20m/s), dirt is not easy to deposit. If dirt is deposited somewhere in the channel, the cross-sectional area of the channel will be reduced and the local flow rate will be increased accordingly. It causes a scouring effect on dirt. 3. Low temperature differential heat transfer can be achieved, and the outlet temperature can be accurately controlled. Because it has a relatively long single flow channel, it can provide a long enough heat exchange distance for the fluid, and when the two liquids are pure countercurrent, the logarithmic average temperature difference can be large. Therefore, the small temperature difference allowed by spiral plate heat exchangers in all heat exchangers is low. The experiment shows that the heat exchange can still be carried out when the temperature difference between the two fluids is 3℃. Therefore, this heat exchanger is very suitable for the recovery of low temperature heat energy. Because of the length of the channel, the medium can be uniformly heated and cooled in the channel, so the outlet temperature of the medium is precisely controlled. 4. No leakage, reduce the risk of work from the center of the spiral flow path to the shell are all made of continuous metal sheets rolled, so that the risk of leakage due to the existence of difficult welding seams is completely avoided. Therefore, it can be used to deal with sensitive, unstable and dangerous fluids. 5. Compact structure, occupy less space because the spiral plate heat exchanger flow channel is concentric surround, this design makes the heat exchanger compact structure, occupy space is greatly reduced, according to statistics, when dealing with the same fluid, the use of spiral plate heat exchanger space is only one sixth of the traditional tubular heat exchanger, so, Spiral plate heat exchangers can be used under a variety of conditions and can reduce customer installation costs. 6. Easy to clean spiral plate heat exchanger adopts single channel structure design, so the use of chemical methods to clean the inner channel will have a good effect. For detachable plate heat exchangers, the end cover is generally equipped with hook head bolts. It is very convenient to open, and the internal flow path can be cleaned mechanically by loosening the latch. The type of spiral plate heat exchanger is divided into two categories: non-detachable and detachable according to the end seal form of the heat exchanger. There are basically two forms according to the flow direction of the medium:

1: Type A (spiral flow on both sides) Type A is the basic form of spiral plate heat exchanger, the flow form of both media are spiral flow, and it is completely countercurrent to achieve heat transfer situation.

2: Type B (spiral flow and cross flow) Type B is a medium for the spiral flow and another medium at a right Angle cross flow, is the two media in different flow modes to achieve heat exchange. The DC medium has minimal pressure loss and is very suitable for condensation and distillation.