Intermittent welding heat recoverer

Abstract

The utility model provides an intermittent welding heat recoverer, which belongs to the technical field of heat exchangers, and is characterized in that a collecting box is surrounded by a feed port, a lower collecting box is surrounded by a discharge port, one ends of a plurality of first heat exchange tubes are communicated with an upper collecting box, the other ends of the plurality of first heat exchange tubes are communicated with the lower collecting box and surround the discharge port, and the intermittent welding heat recoverer further comprises a protective plate, one end of the protective plate is fixedly arranged on the upper header, the other end of the protective plate is fixedly arranged on the lower header, a plurality of protective plate grooves are formed in the protective plate, the plurality of protective plate grooves are not continuous, and each first heat exchange tube is arranged along one protective plate groove; and the protective plate surrounds the first heat exchange tube and protects the first heat exchange tube, so that the first heat exchange tube is prevented from being damaged due to the fact that high-temperature solid materials impact the first heat exchange tube in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and specifically, to a heat recovery device with intermittent welding. Background Art

[0002] At present, the cooling process of semi-coke solid fuel production mainly uses the water quenching method and the semi-dry quenching method. The calcined semi-coke is directly immersed in water or sprayed with water during the falling process to cool down, and then dried with the gas produced from semi-coke production, and then transported and stored. Publication No.: CN218178841U, Title: A High-temperature Solid Heat Exchanger, discloses that "by setting an upper connecting pipe and a lower connecting pipe, the water inlet and outlet of the inner upper horizontal pipe and the inner lower horizontal pipe are ensured to be unobstructed, thereby greatly improving the water flow circulation speed and ensuring the heat exchange efficiency. It solves the technical problem that the expansion amounts of the upper header and the inner upper horizontal pipe are inconsistent, resulting in welding at the connection position between the upper header and the inner upper horizontal pipe". The upper header, the first heat exchange pipes and the lower header enclose a converging type blanking channel. Since high-temperature solid materials are fed into the blanking channel, the impact force of the high-temperature solid materials entering the blanking channel enclosed by the upper header, the first heat exchange pipes and the lower header on the first heat exchange pipes is relatively large and easily damages the first heat exchange pipes. Secondly, the first heat exchange pipes include multiple ones, and there are gaps between adjacent first heat exchange pipes, so the heat of the high-temperature solid materials entering the blanking channel cannot be fully utilized, the heat exchange efficiency of the heat exchanger is relatively low, a large amount of resources are wasted, and part of the dust and high-temperature solid materials are easily separated from the blanking channel through the gaps between the first heat exchange pipes, which not only pollutes the environment, but also the high-temperature solid materials are likely to cause fires or injure the staff.

[0003] Therefore, there is an urgent need for a heat exchanger with high structural strength, not easily damaged, high heat exchange efficiency, environmental protection and higher safety. Summary of the Utility Model

[0004] In view of this, the utility model provides a heat recovery device with intermittent welding, which adds a guard plate between adjacent first heat exchange pipes to increase the strength and avoid heat loss and solid materials flowing out between the first heat exchange pipes.

[0005] The technical solution of the utility model is realized as follows: A heat recovery device with intermittent welding includes an upper header, a lower header and a plurality of first heat exchange pipes. The upper header is surrounded by a feed inlet, the lower header is surrounded by a discharge outlet. One ends of the plurality of first heat exchange pipes are communicated with the upper header and surround the feed inlet, and the other ends of the plurality of first heat exchange pipes are communicated with the lower header and surround the discharge outlet. The heat recovery device further includes a guard plate, the other end of the guard plate is fixedly arranged on the lower header, a plurality of guard plate grooves are arranged on the guard plate, the plurality of guard plate grooves are not continuous, and each first heat exchange pipe is arranged along one of the guard plate grooves.

[0006] On the basis of the above technical solution, preferably, the first heat exchange pipes are welded in the guard plate grooves.

[0007] Based on the above technical solutions, preferably, the guard plate is welded or integrally formed with the upper header; the guard plate is welded or integrally formed with the lower header.

[0008] Based on the above technical solutions, preferably, it further includes an upper end cover, a first auxiliary plate, a second auxiliary plate and a plurality of connecting rods. The upper end cover is provided with an upper port, and the upper port is arranged in cooperation with the feed port. The first auxiliary plate is arranged on one side of the upper header, the second auxiliary plate is arranged on the other side of the upper header, and a plurality of connecting rods are arranged between the upper header and the first auxiliary plate and the second auxiliary plate.

[0009] Based on the above technical solutions, preferably, it further includes a lower end cover and a rib plate. The lower end cover is provided with a lower port, and the lower port is arranged in cooperation with the discharge port. The rib plate is arranged between the lower end cover and the guard plate.

[0010] Based on the above technical solutions, preferably, it further includes lifting lugs. The lifting lugs are welded on the guard plate. There are four lifting lugs, two of which are arranged on one side of the first heat exchange tube, and the other two are symmetrically arranged on the other side of the first heat exchange tube.

[0011] Based on the above technical solutions, preferably, a cooling water inlet is arranged on the lower header, and a steam outlet is arranged on the upper header.

[0012] The intermittent-welding heat recovery device of the present invention has the following beneficial effects compared with the prior art:

[0013] The guard plate surrounds the first heat exchange tube, and the guard plate plays a role in protecting the first heat exchange tube, avoiding damage to the first heat exchange tube caused by the impact of high-temperature solid materials on the first heat exchange tube during use; the guard plate avoids heat loss from the gaps between adjacent first heat exchange tubes, resulting in low energy utilization rate, saves energy, and avoids waste of resources; the guard plate prevents high-temperature dust and waste residues from leaking out of the first heat exchange tube when high-temperature solid materials pass through, preventing environmental pollution or causing fires that may harm the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is the front view of the intermittent-welding heat recovery device of the present invention;

[0016] Figure 2Left view of a heat recovery device for intermittent welding according to the present utility model;

[0017] Figure 3 For the present utility model Figure 2 Cross-sectional view;

[0018] Figure 4 Partial enlarged view of a heat recovery device for intermittent welding according to the present utility model;

[0019] Figure 5 For the present utility model Figure 1 Top view. Specific embodiments

[0020] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present utility model.

[0021] As Figures 1-5 shown, a heat recovery device for intermittent welding includes an upper header 1, a lower header 2, and a plurality of first heat exchange tubes 3. The upper header 1 is surrounded by a feed port 11, and the lower header 2 is surrounded by a discharge port 22. One end of each of the plurality of first heat exchange tubes 3 communicates with the upper header 1 and surrounds the feed port 11, and the other end of each of the plurality of first heat exchange tubes 3 communicates with the lower header 2 and surrounds the discharge port 22. The heat recovery device further includes a guard plate 4. The guard plate 4 is disposed around the plurality of first heat exchange tubes 3. One end of the guard plate 4 is disposed on the upper header 1, and the other end is fixedly disposed on the lower header 2. A plurality of guard plate grooves 41 are provided on the guard plate 4. The plurality of guard plate grooves 41 are not continuous, and each first heat exchange tube 3 is disposed along one of the guard plate grooves 41. The guard plate 4 surrounds the first heat exchange tubes 3, and the guard plate 4 plays a role in protecting the first heat exchange tubes 3, preventing the first heat exchange tubes 3 from being damaged due to the impact of high-temperature solid materials during use; the guard plate 4 prevents heat from being lost through the gaps between adjacent first heat exchange tubes 3, resulting in low energy utilization efficiency, saves energy, and avoids waste of resources; the main functions of the guard plate 4 are, firstly, to enhance heat exchange, secondly, to enhance the overall structural strength, and thirdly, to seal the solid heat exchanger, preventing high-temperature materials from coming into contact with air and causing ablation or explosion due to the volatile components remaining in the materials.

[0022] The first heat exchange tube 3 is welded in the guard plate groove 41. The first heat exchange tube 3 is welded in the guard plate groove 41 by using an intermittent welding technique. The operation can be performed on the side of the guard plate 4 away from the first heat exchange tube 3. After welding, the position of the first heat exchange tube 3 is more stable, avoiding shaking during use and being more convenient for maintenance or repair.

[0023] The protective plate 4 is welded or integrally formed with the upper header 1; the protective plate 4 is welded or integrally formed with the lower header 2. The protective plate 4 can be more robust when welded or integrally formed with the upper header 1, and the protective plate 4 is more robust when welded or integrally formed with the lower header 2.

[0024] It further includes an upper end cover 5, a first auxiliary plate 51, a second auxiliary plate 52 and a plurality of connecting rods 53. The upper end cover 5 is provided with an upper port 54, and the upper port 54 is cooperatively arranged with the feed port 11. The first auxiliary plate 51 is arranged on one side of the upper header 1, and the second auxiliary plate 52 is arranged on the other side of the upper header 1. A plurality of connecting rods 53 are arranged between the upper header 1 and the first auxiliary plate 51 and the second auxiliary plate 52.

[0025] It further includes a lower end cover 6 and a rib plate 62. The lower end cover 6 is provided with a lower port 61, and the lower port 61 is cooperatively arranged with the discharge port 22. The rib plate 62 is arranged between the lower end cover 6 and the protective plate 4.

[0026] It further includes lifting lugs 31. The lifting lugs 31 are welded on the protective plate 4. There are four lifting lugs 31, two of which are arranged on one side of the first heat exchange tube 3, and the other two are symmetrically arranged on the other side of the first heat exchange tube 3.

[0027] A cooling water inlet 21 is arranged on the lower header 2, and a steam outlet 12 is arranged on the upper header 1. Cold water enters the lower header 2 through the cooling water inlet 21. After the high-temperature solid material passes through, the water in the first heat exchange tube 3 of the lower header 2 and the upper header 1 is heated, and then the steam is discharged from the steam outlet 12.

[0028] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intermittently welded heat recovery device, comprising an upper header (1), a lower header (2) and a plurality of first heat exchange tubes (3), wherein the upper header (1) is surrounded by a feed port (11), the lower header (2) is surrounded by a discharge port (22), one end of the plurality of first heat exchange tubes (3) is connected to the upper header (1) and surrounds the feed port (11), and the other end of the plurality of first heat exchange tubes (3) is connected to the lower header (2) and surrounds the discharge port (22), characterized in that: It also comprises a guard plate (4), the guard plate (4) surrounding the plurality of first heat exchange tubes (3), one end of the guard plate (4) being arranged on the upper header (1), and the other end being fixedly arranged on the lower header (2), the guard plate (4) being provided with a plurality of guard plate grooves (41), the plurality of the guard plate grooves (41) being not continuous, and each of the first heat exchange tubes (3) being arranged along one of the guard plate grooves (41).

2. The intermittently welded heat recovery device according to claim 1, characterized in that: The first heat exchange tube (3) is welded in the guard plate groove (41).

3. The intermittently welded heat recovery device according to claim 1, characterized in that: The guard plate (4) and the upper header (1) are welded or integrally formed; the guard plate (4) and the lower header (2) are welded or integrally formed.

4. The intermittently welded heat recovery device according to claim 1, characterized in that: The invention also comprises an upper end cover (5), a first auxiliary plate (51), a second auxiliary plate (52) and a plurality of connecting rods (53); the upper end cover (5) is provided with an upper port (54), the upper port (54) is arranged in cooperation with the feed port (11); the first auxiliary plate (51) is arranged on one side of the upper header (1), the second auxiliary plate (52) is arranged on the other side of the upper header (1), and a plurality of connecting rods (53) are arranged between the upper header (1) and the first auxiliary plate (51) and the second auxiliary plate (52).

5. The intermittently welded heat recovery device according to claim 1, characterized in that: It also includes a lower end cover (6) and a rib plate (62); the lower end cover (6) is provided with a lower port (61); the lower port (61) is arranged in coordination with the discharge port (22); and the rib plate (62) is arranged between the lower end cover (6) and the guard plate (4).

6. The intermittently welded heat recovery device according to claim 1, characterized in that: It also comprises a lifting lug (31), wherein the lifting lug (31) is welded to the guard plate (4), and comprises four lifting lugs (31), two of which are arranged on one side of the first heat exchange tube (3), and the other two are symmetrically arranged on the other side of the first heat exchange tube (3).

7. The intermittently welded heat recovery device according to claim 1, characterized in that: The lower header (2) is provided with a cooling water inlet (21), and the upper header (1) is provided with a steam outlet (12).

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