Flue gas heat exchange assembly

Abstract

The utility model relates to a flue gas heat exchange assembly which comprises a snake-shaped heat exchange coil pipe, heat exchange pieces are arranged on the heat exchange coil pipe, a gap exists between the heat exchange pieces of two adjacent heat exchange straight pipes on the heat exchange coil pipe, a gap blocking piece is arranged between the heat exchange pieces of the two adjacent heat exchange straight pipes, and the gap blocking piece covers the gap. According to the flue gas heat exchange assembly, the gaps between the heat exchange pieces of the two heat exchange straight pipes are blocked through the gap blocking pieces, more high-temperature flue gas can only flow through the heat exchange pieces, and therefore more high-temperature flue gas exchanges heat with the heat exchange pieces, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange devices, in particular to a flue gas heat exchange component. Background Art

[0002] Existing heat exchangers generally include serpentine coils, on which heat exchange straight tubes are provided with cooling fins. The gap between the cooling fins of two adjacent heat exchange straight tubes is large, resulting in most of the high-temperature flue gas not passing through the cooling fins but directly passing through the gap. Most of the high-temperature flue gas does not exchange heat with the cooling fins, resulting in low heat exchange efficiency of the heat exchanger. Utility Model Content

[0003] The utility model aims to provide a flue gas heat exchange component with high heat exchange efficiency.

[0004] The purpose of the utility model is achieved in this way:

[0005] A flue gas heat exchange component includes a serpentine heat exchange coil, a heat exchange plate is arranged on the heat exchange coil, a gap exists between the heat exchange plates of two adjacent heat exchange straight tubes on the heat exchange coil, a gap blocking plate is arranged between the heat exchange plates of the two adjacent heat exchange straight tubes, and the gap blocking plate covers the gap. The flue gas heat exchange component of the utility model blocks the gap between the heat exchange plates of the two heat exchange straight tubes by the gap blocking plate, thereby reducing the flue gas flow channel, so that more high-temperature flue gas can only flow through the heat exchange plates, thereby increasing the flue gas heat exchange flow rate, thereby allowing more high-temperature flue gas to exchange heat with the heat exchange plates, and improving the heat exchange efficiency.

[0006] The present invention can also be further improved as follows.

[0007] The gap baffle is V-shaped, which can reduce the gap, increase the flue gas velocity and enhance the heat exchange effect.

[0008] The gap blocking piece comprises two connected wing plates, and the two wing plates of the gap blocking piece are respectively attached to the heat exchange plates of two adjacent heat exchange straight tubes.

[0009] Drain openings are provided at both ends of the gap baffle. During the heat exchange process of the utility model, condensed water will appear on the heat exchange coil. The gap baffle can catch the condensed water and then guide it to the drainage openings at both ends for discharge. The condensed water will not drip onto the heat exchange coil below, thereby preventing the heat exchange coil from being corroded by water.

[0010] The utility model also comprises a bracket, and the heat exchange coil is arranged on the bracket.

[0011] The beneficial effects of the utility model are as follows:

[0012] The utility model flue gas heat exchange assembly blocks the gap between the heat exchange plates of the two heat exchange straight pipes through the gap blocking plate, thereby reducing the flue gas flow channel, so that more high-temperature flue gas can only flow through the heat exchange plate, and the flue gas heat exchange flow rate is increased, so that more high-temperature flue gas exchanges heat with the heat exchange plate, and the heat exchange efficiency is improved. Compared with the traditional flue gas heat exchange assembly, the flue gas heat exchange assembly solves the problem of small flue gas flow cross-sectional area that cannot be achieved in the production and manufacturing process of various heat exchange elements, thereby increasing the flue gas flow rate to achieve the purpose of enhanced heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model quick-install flue gas heat exchange device

[0014] Figure 2 This is the front view of the first flue gas heat exchange component of the utility model. Figure 1 and Figure 2 The arrows in the figure indicate the direction of smoke flow).

[0015] Figure 3 It is a front view of the first flue gas heat exchange component of the utility model.

[0016] Figure 4 It is a front view of the second flue gas heat exchange component of the utility model.

[0017] Figure 5 It is a front view of the second flue gas heat exchange component of the utility model.

[0018] Figure 6 It is a front view of the third flue gas heat exchange component of the utility model.

[0019] Figure 7 It is a top view of the gap blocking piece of the utility model.

[0020] Figure 8 yes Figure 7 Cross-sectional view at AA in the middle. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1, as Figures 1 to 8As shown, a quick-install flue gas heat exchange device comprises an outer shell 1, in which a plurality of flue gas heat exchange components 2 are stacked, the heat exchange coils 25 of two upper and lower adjacent flue gas heat exchange components 2 are connected in series through an elbow 8, an upper limit connector 3 and a lower limit connector 4 are provided on the inner side wall of the outer shell 1, a plurality of flue gas heat exchange components 2 are stacked between the upper limit connector 3 and the lower limit connector 4, the uppermost layer of flue gas heat exchange components 2 are connected to the upper limit connector 3, and the lowermost layer of flue gas heat exchange components 2 are connected to the lower limit connector 4, a smoke inlet 11 is provided at the top of the outer shell 1, a smoke exhaust port 12 is provided at the bottom of the outer shell 1, a steam exhaust port is provided on the uppermost layer of the flue gas heat exchange components 2, and a water inlet is provided on the lowermost layer of the flue gas heat exchange components 2.

[0023] The multiple flue gas heat exchange components 2 include multiple first flue gas heat exchange components 21, multiple second flue gas heat exchange components 22 and third flue gas heat exchange components 23. The multiple first flue gas heat exchange components 21 and the multiple second flue gas heat exchange components 22 are alternately stacked in the outer shell 1, and the third flue gas heat exchange component 23 is the bottom layer of flue gas heat exchange components.

[0024] As a more specific technical solution of the utility model.

[0025] The structures of the first flue gas heat exchange component 21, the second flue gas heat exchange component 22 and the third flue gas heat exchange component 23 are similar. The first flue gas heat exchange component 21, the second flue gas heat exchange component 22 and the third flue gas heat exchange component 23 all include a bracket 24 and a snake-shaped heat exchange coil 25 arranged on the bracket 24, and the heat exchange coil 25 is provided with a heat exchange plate 26.

[0026] The steam outlet is connected to a steam outlet pipe 5 , and the water inlet is connected to a water inlet pipe 6 .

[0027] Two upper and lower adjacent flue gas heat exchange components 2 are connected by welding or screws, and two ends of the flue gas heat exchange components 2 are connected to the side wall of the shell 1 by welding or screws.

[0028] The heat exchange coils 25 of the flue gas heat exchange assembly 2 of the upper layer are arranged in a staggered manner with the heat exchange coils 25 of the flue gas heat exchange assembly 2 of the lower layer.

[0029] There is a gap 27 between the heat exchange plates 26 of two adjacent heat exchange straight tubes on the heat exchange coil 25, and a gap blocking plate 7 is provided between the heat exchange plates 26 of the two adjacent heat exchange straight tubes. The gap blocking plate 7 covers the gap 27. The flue gas heat exchange component of the utility model blocks the gap between the heat exchange plates of the two heat exchange straight tubes through the gap blocking plate, so that more high-temperature flue gas can only flow through the heat exchange plates, thereby allowing more high-temperature flue gas to exchange heat with the heat exchange plates, thereby improving the heat exchange efficiency.

[0030] The gap blocking piece 7 is V-shaped and includes two connected wing plates 72. The two wing plates 72 of the gap blocking piece 7 are respectively attached to the heat exchange fins 26 of two adjacent heat exchange straight tubes.

[0031] Drain openings 71 are provided at both ends of the gap baffle 7. During the heat exchange process of the utility model, condensed water will appear on the heat exchange coil. The gap baffle can catch the condensed water and then guide it to the drainage openings at both ends for discharge. The condensed water will not drip onto the heat exchange coil below, thereby preventing the heat exchange coil from being corroded by water.

[0032] Two ends of the gap blocking piece 7 are connected to the inner side wall of the housing 1 .

[0033] The working principle of the utility model is:

[0034] Cold water enters the third flue gas heat exchange component from the water inlet pipe 6, and then flows upward to the second flue gas heat exchange component 22 and the first flue gas heat exchange component 21 in sequence. The high-temperature flue gas enters the shell from the smoke inlet at the top of the shell, and the high-temperature flue gas exchanges heat with the water in the first flue gas heat exchange component 21, the second flue gas heat exchange component 22 and the third flue gas heat exchange component 23 from top to bottom. The gap baffle blocks the gap between the heat exchange plates of the two heat exchange straight tubes, and more high-temperature flue gas can only flow through the heat exchange plates, so that more high-temperature flue gas exchanges heat with the heat exchange plates, thereby improving the heat exchange efficiency. The water in the flue gas heat exchange component 2 is gradually heated into water vapor and finally discharged from the steam exhaust pipe 5. The temperature of the high-temperature flue gas gradually decreases and is finally discharged from the exhaust port at the bottom of the shell.

Claims

1. A flue gas heat exchange assembly, comprising a snake-shaped heat exchange coil, a heat exchange fin is provided on the heat exchange coil, and there is a gap between the heat exchange fins of two adjacent heat exchange straight tubes on the heat exchange coil, wherein: A gap blocking sheet is arranged between the heat exchange sheets of two adjacent heat exchange straight tubes, and the gap blocking sheet covers the gap.

2. The flue gas heat exchange assembly according to claim 1, characterized in that: The gap stopper is V-shaped.

3. The flue gas heat exchange assembly according to claim 2, characterized in that: The gap baffle comprises two connected wing plates, and the two wing plates are respectively attached to the heat exchange plates of two adjacent heat exchange straight tubes.

4. The flue gas heat exchange assembly according to claim 1, characterized in that: Both ends of the gap blocking piece are provided with drainage openings.

5. The flue gas heat exchange assembly according to claim 1, characterized in that: It also includes a bracket, on which the heat exchange coil is arranged.

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