Steam generator

Abstract

The utility model provides a steam generator, which belongs to the technical field of heat exchangers and is characterized in that a steam collector surrounds a feed port, a cold water collector surrounds a discharge port, one ends of a plurality of steam generating pipes are communicated with the steam collector and surround the feed port, and the other ends of the steam generating pipes are communicated with the cold water collector and surround the discharge port. A protective plate is connected between every two adjacent steam generating pipes, an upper hot connecting plate is arranged at one end of each protective plate and fixedly arranged on the steam collector, and a lower hot connecting plate is arranged at the other end of each protective plate and fixedly arranged on the cold water collector; the heat connecting plate is arranged at one end of the protective plate, and the upper heat connecting plate is connected with the steam collector, so that the connecting strength is improved, and a mounting and maintenance space is provided; the other end of the protective plate is provided with the heat connecting plate, the lower heat connecting plate is connected with the cold water collector, the connecting strength is improved, and installation and maintenance space is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and more specifically, to a steam generator. Background Art

[0002] At present, there are various heat exchangers. For example, the publication number is CN216010792U, and the name is a high-temperature semi-coke waste heat utilization heat exchanger, which discloses "an upper header and a lower header arranged corresponding to each other, and a plurality of first heat exchange tubes are connected between the upper header and the lower header, and a first membrane wall is arranged between adjacent first heat exchange tubes". By putting high-temperature semi-coke into the inner cavity of the heat exchanger from the upper header, the waste heat recovery of semi-coke is realized through cooling water; during the cooling process of semi-coke, water and semi-coke do not directly contact, and the cooling of semi-coke is dry cooling, so that no additional drying is required and no harmful substances are generated; the cooling water flows from bottom to top, making the water temperature increase from bottom to top, so that when semi-coke conducts heat exchange, it is carried out sequentially, and sudden cooling will not occur, resulting in damage to the performance of semi-coke. However, although the existence of the membrane wall improves the waste heat recovery of semi-coke, the existing membrane wall is directly welded to one side corresponding to the upper and lower headers. Once damaged or malfunction occurs, it is difficult to confirm, and it needs to be removed to determine the fault point before it can be repaired. Secondly, the reserved space for installation and maintenance is small, and on-line maintenance cannot be carried out during the installation and maintenance process. It must be disassembled after stopping production before it can be repaired. Not only is the maintenance time long, the cost is high, the maintenance difficulty is large, and the efficiency is low; industries that cannot be shut down at will cannot be repaired after damage, affecting normal production.

[0003] Therefore, there is an urgent need for a solid heat exchanger with a relatively large reserved space for the membrane wall and low installation and maintenance difficulty. Summary of the Utility Model

[0004] In view of this, the utility model proposes a method of adding an upper heat connection plate and a lower heat connection plate to reserve the connection space between the protection plate and the steam collector and the cold water collector, reducing the installation and maintenance difficulty.

[0005] The technical solution of the utility model is realized as follows: A steam generator includes a steam collector, a cold water collector and a plurality of steam generating tubes. The steam collector is surrounded by a feed port, the cold water collector is surrounded by a discharge port. One end of a plurality of the steam generating tubes is communicated with the steam collector and surrounds the feed port, and the other end of a plurality of the steam generating tubes is communicated with the cold water collector and surrounds the discharge port. A protection plate is connected between adjacent steam generating tubes. One end of the protection plate is provided with an upper heat connection plate, and the upper heat connection plate is fixedly arranged on the steam collector. The other end of the protection plate is provided with a lower heat connection plate, and the lower heat connection plate is fixedly arranged on the cold water collector.

[0006] On the basis of the above technical solutions, preferably, one end of the upper heat connecting plate away from the protection plate is connected to one side of the steam collector facing the feed port.

[0007] On the basis of the above technical solutions, preferably, one end of the cold water collector away from the protection plate is connected to one side of the cold water collector facing the discharge port.

[0008] On the basis of the above technical solutions, preferably, one end of the upper heat connecting plate away from the protection plate is connected to one side of the steam collector facing the cold water collector.

[0009] On the basis of the above technical solutions, preferably, one end of the cold water collector away from the protection plate is connected to one side of the cold water collector facing the steam collector.

[0010] On the basis of the above technical solutions, preferably, the upper heat connecting plate includes a first plate and a second plate, the first plate and the second plate are connected, the first plate is connected to the protection plate, and the second plate is connected to the steam collector.

[0011] On the basis of the above technical solutions, preferably, the included angle between the first plate and the second plate is greater than or equal to 0° and less than or equal to 180°.

[0012] On the basis of the above technical solutions, preferably, the lower heat connecting plate includes a third plate and a fourth plate, the third plate and the fourth plate are connected, the third plate is connected to the protection plate, and the fourth plate is connected to the cold water collector.

[0013] On the basis of the above technical solutions, preferably, the included angle between the third plate and the fourth plate is greater than or equal to 0° and less than or equal to 180°.

[0014] On the basis of the above technical solutions, preferably, the upper heat connecting plate is welded to the protection plate and the steam collector, and the lower heat connecting plate is welded to the protection plate and the cold water collector.

[0015] The steam generator of the present utility model has the following beneficial effects compared with the prior art:

[0016] By arranging a heat connecting plate at one end of the protection plate, connecting the upper heat connecting plate to the steam collector, the connection strength is increased, the installation and maintenance space is provided, it is convenient to determine the maintenance point, and maintenance can be carried out without disassembly, without stopping production for maintenance, saving costs; a heat connecting plate is arranged at the other end of the protection plate, connecting the lower heat connecting plate to the cold water collector, the connection strength is increased, the installation and maintenance space is provided, it is convenient to determine the maintenance point, and maintenance can be carried out without disassembly, without stopping production for maintenance, saving costs.

[0017] The upper hot connecting plate is a single plate with higher strength, eliminating the need to position the first and second plates, reducing difficulty, and improving the efficiency of assembly and maintenance. The lower hot connecting plate is also a single plate with higher strength, eliminating the need to position the third and fourth plates, reducing difficulty, and improving the efficiency of assembly and maintenance. Brief Description of the Drawings

[0018] 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 drawings in the following description 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.

[0019] Figure 1 Front view of a steam generator of the present invention;

[0020] Figure 2 Top view of a steam generator of the present invention;

[0021] Figure 3 Cross-sectional view of a steam generator of the present invention;

[0022] Figure 4 Cross-sectional view of another steam generator of the present invention;

[0023] Figure 5 Cross-sectional view of another steam generator of the present invention;

[0024] Figure 6 Cross-sectional view of another steam generator of the present invention;

[0025] Figure 7 Cross-sectional view of another steam generator of the present invention. Detailed Embodiments

[0026] The following will describe the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Embodiment 1:

[0027] As Figures 1-3As shown in the figure, a steam generator includes a steam aggregator 1, a cold water aggregator 2, and a number of steam generating tubes 3. The steam aggregator 1 is surrounded by a feed inlet 11, and the cold water aggregator 2 is surrounded by a discharge outlet 21. One end of the steam generating tube 3 is connected to the steam aggregator 1 and surrounds the feed inlet 11, and the other end of the steam generating tube 3 is connected to the cold water aggregator 2 and surrounds the discharge outlet 21. A guard plate 4 is connected between adjacent steam generating tubes 3. One end of the guard plate 4 is provided with an upper heat connecting plate 41, and the upper heat connecting plate 41 is fixedly arranged on the steam aggregator 1. The other end of the guard plate 4 is provided with a lower heat connecting plate 42, and the lower heat connecting plate 42 is fixedly arranged on the cold water aggregator 2. The guard plate 4 is used to make full use of the heat after the combustion of solid materials. In order to increase the connection strength between the guard plate 4, the steam aggregator 1 and the cold water aggregator 2 while providing space for installation and maintenance, we set a heat connecting plate 41 at one end of the guard plate 4, and connect it with the steam aggregator 1 through the upper heat connecting plate 41 to increase the connection strength, provide space for installation and maintenance, facilitate the determination of the maintenance point, and can be repaired without disassembly and without shutdown for maintenance, saving costs; a heat connecting plate 42 is set at the other end of the guard plate 4, and it is connected with the cold water aggregator 2 through the lower heat connecting plate 42 to increase the connection strength, provide space for installation and maintenance, facilitate the determination of the maintenance point, and can be repaired without disassembly and without shutdown for maintenance, saving costs.

[0028] The cold water aggregator 2 is a circularly surrounded pipeline. Cold water enters the steam generator from the cold water aggregator 2. High-temperature materials are put into the feed inlet 11. The cold water in the cold water aggregator 2 is heated by the steam generating tube 3 and then enters the steam aggregator 1. The steam aggregator 1 is a circular pipeline, completing the heat interaction of the steam generator.

[0029] The end of the upper heat connecting plate 41 away from the guard plate 4 is connected to the side of the steam aggregator 1 facing the feed inlet 11. The end of the cold water aggregator 2 away from the guard plate 4 is connected to the side of the cold water aggregator 2 facing the discharge outlet 21.

[0030] The upper heat connecting plate 41 includes a first plate 411 and a second plate 412. The first plate 411 and the second plate 412 are connected. The first plate 411 is connected to the guard plate 4, and the second plate 412 is connected to the steam aggregator 1.

[0031] The included angle between the first plate 411 and the second plate 412 is equal to 90°. At this time, enough space is reserved for the installation and maintenance of the guard plate 4 and the upper heat connecting plate 41, and at the same time, the structural strength of the upper heat connecting plate 41 is increased.

[0032] The lower heat connecting plate 42 includes a third plate 421 and a fourth plate 422. The third plate 421 and the fourth plate 422 are connected. The third plate 421 is connected to the guard plate 4, and the fourth plate 422 is connected to the cold water aggregator 2.

[0033] The included angle between the third plate 421 and the fourth plate 422 is equal to 90°. At this time, enough space is reserved for installing and maintaining the guard plate 4 and the lower heat connecting plate 42, and at the same time, the strength of the lower heat connecting plate 42 is increased.

[0034] The lower heat connecting plate 42 is welded to the guard plate 4 and the cold water aggregator 2. Welding is a conventional connection method. Similarly, casting or other connection methods can also be used. Embodiment 2:

[0035] In Embodiment 1, a connection method is disclosed in which the included angle between the first plate 411 and the second plate 412 is equal to 90°, and the included angle between the third plate 421 and the fourth plate 422 is equal to 90°. Although enough space is reserved for installation and maintenance, it is difficult to control the included angles between the first plate 411 and the second plate 412 and between the third plate 421 and the fourth plate 422 to be 90°, which increases the installation difficulty and raises the installation cost.

[0036] As Figure 4 shown, for a steam generator, a connection method in which the included angle between the first plate 411 and the second plate 412 is equal to 180°, and the included angle between the third plate 421 and the fourth plate 422 is equal to 120°. In this connection method, the connection between the first plate 411 and the second plate 412, and between the third plate 421 and the fourth plate 422 is more convenient, and the installation effect is better. Embodiment 3:

[0037] In Embodiment 1 and Embodiment 2, one end of the steam generating pipe 3 is connected below the steam aggregator 1, and the other end of the steam generating pipe 3 is connected above the cold water aggregator 2.

[0038] As Figure 5 shown, for a steam generator, one end of the steam generating pipe 3 is connected to the periphery of the steam aggregator 1, and the other end of the steam generating pipe 3 is connected to the periphery of the cold water aggregator 2. One end of the upper heat connecting plate 41 away from the guard plate 4 is connected to the side of the steam aggregator 1 facing the cold water aggregator 2. One end of the cold water aggregator 2 away from the guard plate 4 is connected to the side of the cold water aggregator 2 facing the steam aggregator 1.

[0039] The upper heat connecting plate 41 is welded to the guard plate 4 and the steam aggregator 1, and the lower heat connecting plate 42 is welded to the guard plate 4 and the cold water aggregator 2.

[0040] The included angle between the first plate 411 and the second plate 412 is equal to 0°. The included angle between the third plate 421 and the fourth plate 422 is equal to 0°. At this time, the upper heat connecting plate 41 is a single plate with higher strength, and there is no need to position the first plate 411 and the second plate 412, which is less difficult and improves the efficiency of assembly and maintenance; the lower heat connecting plate 42 is a single plate with higher strength, and there is no need to position the third plate 421 and the fourth plate 422, which is even less difficult and improves the efficiency of assembly and maintenance.

[0041] Similarly, in actual operation, it is also possible to adopt the method where the included angle between the first plate 411 and the second plate 412 is equal to 90° and the included angle between the third plate 421 and the fourth plate 422 is equal to 0° on the same solid heat exchanger; or the method where the included angle between the first plate 411 and the second plate 412 is equal to 0° and the included angle between the third plate 421 and the fourth plate 422 is equal to 90°. Example 4:

[0042] Example 1 gives the connection method where the included angle between the first plate 411 and the second plate 412 is equal to 90° and the included angle between the third plate 421 and the fourth plate 422 is equal to 90°. Example 3 gives the connection method where the included angle between the first plate 411 and the second plate 412 is equal to 180°. The connection method where the included angle between the third plate 421 and the fourth plate 422 is equal to 180°. It also gives the expansion of the method where the included angle between the first plate 411 and the second plate 412 is equal to 90° and the included angle between the third plate 421 and the fourth plate 422 is equal to 180°; or the method where the included angle between the first plate 411 and the second plate 412 is equal to 180° and the included angle between the third plate 421 and the fourth plate 422 is equal to 90°.

[0043] As Figure 6 shown, the included angle between the first plate 411 and the second plate 412 is equal to 90°, and the included angle between the third plate 421 and the fourth plate 422 is equal to 120°. Similarly, it can also be changed to the connection method where the included angle between the first plate 411 and the second plate 412 is equal to 120° and the included angle between the third plate 421 and the fourth plate 422 is equal to 90°.

[0044] In the technical solutions listed in the above four examples, the connection positions of the steam generating pipe 3 with the steam aggregator 1 and the cold water aggregator 2, and the included angles between the first plate 411 and the second plate 412, and between the third plate 421 and the fourth plate 422 and other solutions can be combined and used with each other. For example Figure 7As shown, on one side of the upper hot connecting plate 41, the included angle between the first plate 411 and the second plate 412 is equal to 90°, and on the other side, the included angle between the first plate 411 and the second plate 412 is equal to 120°. On one side of the lower hot connecting plate 42, the included angle between the third plate 421 and the fourth plate 422 is equal to 90°, and on the other side, the included angle between the third plate 421 and the fourth plate 422 is equal to 120°.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A steam generator, comprising: A steam collector (1), a cold water collector (2) and a plurality of steam generating tubes (3), wherein the steam collector (1) is surrounded by a feed port (11), the cold water collector (2) is surrounded by a discharge port (21), one end of the plurality of steam generating tubes (3) is connected to the steam collector (1) and surrounds the feed port (11), and the other end of the plurality of steam generating tubes (3) is connected to the cold water collector (2) and surrounds the discharge port (21), characterized in that a guard plate (4) is connected between adjacent steam generating tubes (3), one end of the guard plate (4) is provided with an upper heat connecting plate (41), the upper heat connecting plate (41) is fixedly arranged on the steam collector (1), and the other end of the guard plate (4) is provided with a lower heat connecting plate (42), the lower heat connecting plate (42) is fixedly arranged on the cold water collector (2).

2. A steam generator according to claim 1, characterized in that: One end of the upper heat connecting plate (41) away from the guard plate (4) is connected to a side of the steam collector (1) facing the feed inlet (11).

3. A steam generator according to claim 1, characterized in that: One end of the cold water collector (2) away from the guard plate (4) is connected to a side of the cold water collector (2) facing the discharge port (21).

4. A steam generator according to claim 1, characterized in that: One end of the upper heat connection plate (41) away from the guard plate (4) is connected to a side of the steam collector (1) facing the cold water collector (2).

5. A steam generator according to claim 1, characterized in that: One end of the cold water collector (2) away from the guard plate (4) is connected to a side of the cold water collector (2) facing the steam collector (1).

6. A steam generator according to claim 2 or 3, characterized in that: The upper heat connection plate (41) comprises a first plate (411) and a second plate (412), wherein the first plate (411) and the second plate (412) are connected to each other, the first plate (411) is connected to the guard plate (4), and the second plate (412) is connected to the steam collector (1).

7. A steam generator according to claim 6, characterized in that: The angle between the first plate (411) and the second plate (412) is greater than or equal to 0° and less than or equal to 180°.

8. A steam generator according to claim 4 or 5, characterized in that: The lower heat connection plate (42) comprises a third plate (421) and a fourth plate (422), wherein the third plate (421) and the fourth plate (422) are connected to each other, the third plate (421) is connected to the guard plate (4), and the fourth plate (422) is connected to the cold water collector (2).

9. A steam generator according to claim 8, characterized in that: The angle between the third plate (421) and the fourth plate (422) is greater than or equal to 0° and less than or equal to 180°.

10. A steam generator according to claim 1, characterized in that: The upper heat connecting plate (41) is welded to the guard plate (4) and the steam collector (1), and the lower heat connecting plate (42) is welded to the guard plate (4) and the cold water collector (2).

Images