CN202547465U

CN202547465U - Turbulent flow heat exchange high-pressure U-shaped pipe

Info

Publication number: CN202547465U
Application number: CN2012201072770U
Authority: CN
Inventors: 戴斌; 刘先权
Original assignee: Sichuan Chuanguo Boiler Co Ltd
Current assignee: Sichuan Chuanguo Boiler Co Ltd
Priority date: 2012-03-21
Filing date: 2012-03-21
Publication date: 2012-11-21
Anticipated expiration: 2022-03-21

Abstract

The utility model discloses a turbulent flow heat exchange high-pressure U-shaped pipe, which is particularly suitable for a high-pressure heater in thermal power generation equipment. The turbulent flow heat exchange high-pressure U-shaped pipe consists of a U-shaped pipe and a helical belt. The flowing way of water current is changed through the insertion of the helical belt, so that the heat exchange efficiency of the U-shaped pipe is increased, and the heat exchange coefficient of a high-pressure heater is increased greatly.

Description

Flow-disturbing heat exchange type height adds U type pipe

Affiliated technical field

The utility model relates to steam power plant mesohigh heater technical field, is specially adapted to that a kind of flow-disturbing heat exchange type height adds U type pipe in the high-pressure heater.

Background technology

As heat-exchanger rig important effect is arranged at steam power plant mesohigh heater.But the high-pressure heater heat exchange U type pipe that uses at present is hollow U type pipe, owing to receive the restriction of structure, hollow U type pipe heat exchange efficiency is poor, has caused the high-pressure heater coefficient of heat transfer low.

Summary of the invention

In order to overcome the low deficiency of the existing high-pressure heater coefficient of heat transfer, the utility model provides a kind of flow-disturbing heat exchange type height to add U type pipe, and this flow-disturbing heat exchange type height adds U type pipe can improve heat exchange efficiency greatly.

The utility model solves the technical scheme that its technical problem adopted: this flow-disturbing heat exchange type height adds U type pipe (see figure 1) and comprises U type pipe and spiral band two parts; Spiral band be through in the U type pipe and and U type inside pipe wall between have the gap of 0.7mm～1.2mm, spiral band is to have certain thickness and certain evenly conveyor screw of pitch.Owing in U type pipe, penetrated spiral band; When current pass through U type pipe; The type of flow of current will change, and become spirals by streamlined flow, the tube wall that aqueous fluid directly is flushed to certain angle under the state of turbulent flow; Strengthen the effect of heat exchange, thereby reached the purpose that improves the high-pressure heater coefficient of heat transfer.

The beneficial effect of the utility model is that flow-disturbing heat exchange type height adds U type pipe can effectively improve heat exchange efficiency, and the coefficient of heat transfer of high-pressure heater is improved widely.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is that the utility model flow-disturbing heat exchange type height adds U type pipe figure.

Fig. 2 is the partial enlarged drawing I that the utility model flow-disturbing heat exchange type height adds U type pipe.

Fig. 3 is the N-N cutaway view that the utility model flow-disturbing heat exchange type height adds U type pipe.

1.U type pipe, 2. spiral band among the figure.

The specific embodiment

In Fig. 1; This flow-disturbing heat exchange type height adds U type pipe and comprises U type pipe (1) and spiral band (2) two parts; Spiral band (2) be through in the U type pipe (1) and and U type pipe (1) inwall between have the gap of 0.7mm～1.2mm, spiral band (2) is for having certain thickness and certain evenly conveyor screw of pitch.

In Fig. 2; The partial enlarged drawing I that adds U type pipe for the utility model flow-disturbing heat exchange type height; Can find out that from partial enlarged drawing I spiral band (2) is one and has certain thickness and certain evenly conveyor screw of pitch, and between U type pipe (1) inwall, have the gap of 0.7mm～1.2mm.

In Fig. 3,, can find out that from the N-N cutaway view spiral band (2) has certain thickness for the utility model flow-disturbing heat exchange type height adds the N-N cutaway view of U type pipe.

Claims

1. the flow-disturbing heat exchange type height in the high-pressure heater adds U type pipe; Comprise U type pipe (1) and spiral band (2) two parts; It is characterized in that: spiral band (2) be through in the U type pipe (1) and and U type pipe (1) inwall between have the gap of 0.7mm～1.2mm, spiral band (2) is for having certain thickness and certain evenly conveyor screw of pitch.