Petal pore plate longitudinal-flow heat exchanger

Abstract

The invention relates to a longitudinal-flow heat exchanger which takes a petal pore plate as bundle support; the heat exchanger comprises a shell body, a seal head, a heat transfer tube bundle, a petal pore plate support, a pull tube and a tube spacer, a shell-side inlet and outlet tube, a tube-side inlet and outlet tube, and the like, wherein the petal pore plate is shown as the attached drawing 1, i.e., an entire circular plate which is a full circular plate composed of support strips and pedals which are arranged along the same direction, and is a key component of the heat exchanger; by the support strips which are arranged in a criss-cross way on two petal pore plates, the all-round support to the heat exchanger bundle is achieved, thereby leading the whole bundle to have good vibration prevention and resistance capacity; under the action of the petal pore plate, the heat exchanger shell-side fluid flows vertically along a tube axis; the functions of flow guide and disturbance of the pore plate petal can exacerbate fluid turbulence, thereby effectively enhancing convective heat transfer and producing good scale prevention and descaling functions; and the blocking effect of the periphery of the pore plate reduces the leakage flow ineffective on heat transfer; and the invention can be widely used in heat exchange equipment such as longitudinal-flow vertical and horizontal tube shell type heat exchanger, tube shell type condenser, etc.

Description

Technical field [0001] The invention relates to a novel longitudinal flow heat exchanger and its tube bundle support—petal orifice plate, which can support the heat exchange tube bundle and has a flow-disturbing effect, and the formed heat exchanger can effectively improve the heat transfer efficiency , and reduce shell side pressure drop, reduce power consumption, can be widely used in chemical industry, oil refining, light industry, energy and power and other heat exchange occasions. Background technique [0002] In the process industry, the heat exchanger is the key equipment to ensure the normal operation of the industrial system, the temperature of the process medium is reasonable, save energy and recover waste heat (or waste heat), and it occupies a large part of the entire project in terms of metal consumption, power consumption and investment. share. According to statistics, in general petrochemical enterprises, the investment of heat exchangers accounts for 40-50% ...

AI Technical Summary

Problems solved by technology

The traditional shell-and-tube heat exchanger adopts a smooth circular tube and a single-bow baffle structure. The fluid flows in the shell side perpendicular to the axial direction of the tube, and there is a large heat transfer dead zone, which makes the overall heat exchanger Heat transfer efficiency decreases, flow resistance increases, and fluid-induced vibration often occurs at large Reynolds numbers, resulting in heat exchanger failure

Therefore, the shell-side tube bundle support structure and fluid flow performance of the shell-and-tube heat exchanger need to be improved

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