CN205090407U - Coiled heat exchange device - Google Patents

Abstract

The utility model relates to a coiled heat exchange device has a casing, the offside of casing is equipped with combustor and flue respectively, is provided with heat transfer pipe fitting and collection case in the casing, be equipped with feeding branch pipe and ejection of compact branch pipe on the collection case, the heat transfer pipe fitting comprises a plurality of groups double helix coil pipe of being in the same place side by side, double helix coil pipe one end and feeding branch connection, the other end and ejection of compact branch connection, the double helix coil pipe by coil pipe one end anticlockwise around to center pin department, clockwise around going out until the coil pipe other end along the pipeline around good by center pin department again, and the both ends of tube side are all outside the coil pipe. The utility model discloses the heat transfer device volume is exquisite compact, is convenient for maintain, heat exchange efficiency is high, effectively improving energy efficiency.

Description

A coil heat exchange device

technical field

The utility model relates to a heat exchange device, in particular to a heat exchange device based on a double-helix coil heat exchange method.

Background technique

The heat exchange device is a device that transfers heat from one fluid to another fluid, and is divided into two types: hybrid type and surface type. Commonly used surface heat exchange devices are mainly divided into plate heat exchangers and shell-and-tube heat exchangers, and shell-and-tube heat exchangers dominate industrial applications. The water inlet pipe and the water outlet pipe in the existing shell and tube heat exchanger are installed separately, and the two ends of the coil are arranged in the center of the coil, so there are problems such as bulky, low thermal efficiency, low energy utilization rate, and inconvenient maintenance disadvantages.

Contents of the invention

The purpose of the utility model is to provide a double-helix coil type heat exchange device with high heat exchange efficiency, small and compact volume and easy maintenance. The heat exchange device can realize condensation.

For above-mentioned purpose, the technical scheme that the utility model adopts is:

A coil type heat exchange device has a casing, the opposite side of the casing is respectively provided with a burner and a flue, and a heat exchange pipe fitting and a header are arranged in the casing, and the inlet and outlet are arranged on the header The feed branch pipe and the discharge branch pipe. The heat exchange pipe is composed of several groups of double helix coils arranged side by side. One end of the double helix coil is connected to the feed branch pipe, and the other end is connected to the discharge branch pipe.

The double-helix coil of the heat exchange device of the utility model winds counterclockwise from one end of the coil to the central axis, and then winds clockwise from the central axis along the wound pipeline until the other end of the coil, and the two ends of the tube pass are located outside the coil.

The inner header of the casing of the utility model includes a feed header and a discharge header, and the feed header and the discharge header are horizontally arranged on the same side of the casing.

The feed branch pipe of the heat exchange device of the utility model is connected to the feed header, and the discharge branch pipe is connected to the discharge header, and the feed branch pipe and the discharge branch pipe are arranged alternately and vertically connected to the header.

The coil-type heat exchange device described in the utility model is a tube-type gas-liquid heat exchange device, and the heat exchange process involves heat transfer among gas-gas, gas-liquid and liquid-liquid molecules. The utility model uses a double-helix coil as a heat exchange pipe, and uses the double-helix coil to increase the flow path of the liquid medium between the coils. At the same time, the cold and hot coils are arranged at intervals to strengthen the heat transfer and realize the moisture in the flue gas. The condensation effect of the lower temperature pipe section releases latent heat, which is beneficial for the liquid in the pipe to absorb more heat and increase the outflow temperature of the liquid. The larger the temperature difference between the liquid entering and exiting, the higher the heat exchange efficiency of the heat exchange device and the higher the energy utilization rate. high.

The heat exchange device of the utility model adopts multiple sets of double-helix coils installed side by side. The water temperature in the coil connected to the water inlet pipe is low, and the water temperature in the coil connected to the water outlet pipe is high. The cold and hot interval can strengthen the heat transfer and highlight the advantages of condensation. It is beneficial for the liquid in the pipe to absorb more heat, the heat transfer efficiency is relatively higher, and the energy utilization rate is effectively improved; the water inlet pipe and the water outlet pipe are arranged in parallel, and the structure is compact.

The coil tube in the heat exchange device of the utility model is an independent part of the device, and both ends are on the outside, and are fixed on the shell by screws, and spot welding is used to fix each circle of coil tubes, which is firm and reliable, and can be carried out separately. Dismantling and replacing partially damaged coils overcomes the shortcomings of traditional tubular heat exchangers that are difficult to maintain, and solves the problems of thorough cleaning and partial replacement of tubular heat exchangers.

Description of drawings

Fig. 1 is a schematic diagram of the front structure of the utility model.

Fig. 2 is a schematic diagram of the internal structure of the utility model.

Fig. 3 is a top structural view of the double helix coil in Fig. 1 .

Fig. 4 is a side structural view of the double helix coil in Fig. 1 .

In the figure: 1-collector, 2-coil, 3-flue, 4-burner, 5-housing, 6-feed branch pipe, 7-discharge branch pipe, 8-foreign matter discharge pipe, 9-base.

detailed description

The embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only preferred embodiments of the utility model, and are not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

As shown in FIG. 1 , a coil heat exchange device has a cylindrical shell 5 fixed by a base 9 arranged below the shell 5 .

As shown in FIG. 2 , a burner 4 and a flue 3 are respectively provided on opposite planes of the housing 5 . Heat exchange tubes are arranged inside the casing 5 . The shell-side fluid enters the casing 5 from the header 1, and is discharged into the header 1 after fully exchanging heat with the heat exchange pipes. A foreign matter discharge pipe 8 is also provided at the bottom of the shell 6 to discharge foreign matter such as condensate generated in the shell side.

The heat exchange tubes together with the header 1 constitute the tube side of the heat exchange device.

Wherein, a heat exchange pipe fitting and a header 1 are arranged in the casing 6, and the feed branch pipe 6 and the discharge branch pipe 7 are arranged on the header box 1, and the heat exchange pipe fittings are composed of several double helical discs arranged side by side. The pipe 2 is composed of one end of the double helix coil pipe 2 connected to the feed branch pipe 6 and the other end connected to the discharge branch pipe 7 .

As shown in Figure 3, the double helix coil 2 is wound counterclockwise from one end of the coil to the central axis, and then clockwise from the central axis along the wound pipeline to the other end of the coil, and the tube side Both ends are on the outside of the coil.

The header 1 includes a feed header and a discharge header, and the feed header and the discharge header are horizontally arranged on the same side of the casing.

As shown in Figure 4, the feed branch pipe 6 is connected to the feed header, the discharge branch pipe 7 is connected to the discharge header, and the feed branch pipe 6 and the discharge branch pipe 7 are alternately arranged and vertically connected to the header superior.

The tube-side fluid enters the shell 6 from the header 1, enters each coil 2 through the feed branch 6, exchanges heat with the shell-side fluid, flows into the header 1 from the discharge branch 7, and then discharges the tube.

Claims (4)

1. a coiled heat-exchange device, there is a housing, the offside of described housing is respectively equipped with burner and flue, heat exchange pipe fitting and header is provided with in housing, it is characterized in that, described header is provided with feed-inputing branched pipe and discharging arm, and described heat exchange pipe fitting is made up of some groups of side-by-side double helix coil pipes, described double helix coil pipe one end is connected with feed-inputing branched pipe, and the other end is connected with discharging arm.

2. coiled heat-exchange device according to claim 1, it is characterized in that, described double helix coil pipe, then to be laid out until the coil pipe other end along the pipeline wound by central axis counterclockwise around to central axis clockwise by coil pipe one end, and the two ends of coil pipe are all in outside coil pipe.

3. coiled heat-exchange device according to claim 1, is characterized in that, described header comprises charging header and discharging header, and described charging header and discharging header level are located at the homonymy in housing.

4. the coiled heat-exchange device according to claim 1 or 3, is characterized in that, described feed-inputing branched pipe is connected in charging header, and discharging arm is connected in discharging header, and feed-inputing branched pipe and discharging arm are arranged alternately and are vertically connected in header.