GGH heat exchanger with anti-blocking structure

Abstract

The utility model relates to heat exchange device technical field especially a GGH heat exchanger with prevent blocking structure, include: the casing of being provided with high temperature flue gas import and low temperature flue gas import, install a plurality of fixed plate at the inside bottom of casing interval, a plurality of fixed plate between matrix distribution have a plurality of heat exchange pipes, wherein still install flush pipe interval above fixed plate, a plurality of flush pipe set up between two rows heat exchange pipe of longitudinal adjacent side still open flush hole in flush pipe, the utility model discloses through install a plurality of flush pipe on the fixed plate of heat exchanger, flush pipe in both sides open flush hole, the number of flush hole and the number of heat exchange pipe are same, only need to inject water flow in predetermined time when working, and water flow carries out flush to fixed plate at the place of connecting heat exchange pipe via flush hole, so as to wash clean the salt that remains on fixed plate, guarantees the long -term stable operation of equipment.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange device technology, and in particular to a GGH heat exchanger with an anti-clogging structure. Background Technology

[0002] A flue gas heat exchanger (GGH) is a heat exchange device that uses the heat of a high-temperature fluid to heat a low-temperature fluid, and also a heat exchange device that transfers heat from high-temperature flue gas to low-temperature flue gas. In the incineration of hazardous waste, especially when using an incinerator, the flue gas at the outlet of the scrubbing tower often contains incompletely removed water containing salts. When this low-temperature, saline flue gas encounters the high-temperature flue gas in the tube side, the water evaporates rapidly, while the salts precipitate out. These precipitated salts gradually accumulate on the flue gas inlet fixed plate in the low-temperature section of the GGH heat exchanger, leading to an increasing amount of salt on the fixed plate.

[0003] Over time, the accumulated salt will restrict the free expansion and contraction of the GGH heat exchanger tubes. Since the GGH heat exchanger needs to withstand high temperatures and temperature changes during operation, the free expansion and contraction of the tubes is an important factor in ensuring its normal operation and extending its service life. However, the accumulation of salt hinders this free expansion and contraction, making the GGH heat exchanger tubes prone to damage under thermal stress, such as cracks, deformation or rupture.

[0004] Therefore, in order to clean the salt on the fixed plate, we propose a GGH heat exchanger with an anti-clogging structure. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a GGH heat exchanger with an anti-clogging structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a GGH heat exchanger with an anti-clogging structure, including:

[0008] The casing is equipped with both a high-temperature flue gas inlet and a low-temperature flue gas inlet;

[0009] Several fixing plates are installed at intervals on the inner bottom of the shell, and several heat exchange tubes are distributed in a matrix between the fixing plates.

[0010] Above the fixed plate, flushing pipes are installed at intervals. Several flushing pipes are arranged sequentially between two longitudinally adjacent rows of heat exchange tubes. Flushing holes are also provided on both sides of the flushing pipes. Several flushing holes are one-to-one with several heat exchange tubes in each longitudinal row.

[0011] Furthermore, it also includes a main pipe, which is detachably connected to several flushing pipes on each fixed plate.

[0012] Furthermore, the main pipeline has several branch pipes connected to its side, and these branch pipes are connected and fixed to the flushing pipeline via flanges.

[0013] Furthermore, the main pipe and the fixing plate are detachably connected by a fixing component.

[0014] Furthermore, the fixing assembly includes a collar sleeved on the outside of the main pipe, and a connecting rod is fixedly installed on the side of the collar;

[0015] A sleeve is fixedly connected to the side of the fixing plate, and the connecting rod is inserted into the sleeve. A through hole is opened on the end face of the sleeve. A positioning glass bead is embedded on the outside of the connecting rod. The telescopic end of the positioning glass bead is engaged with the through hole. A fastener is provided above the collar.

[0016] Furthermore, the flushing holes are arranged in two rows along the length of the flushing pipe;

[0017] The axis of the flushing hole and the axis of the flushing pipe form a 45-degree angle.

[0018] Furthermore, the flushing hole is directly opposite the center of the heat exchange tube.

[0019] The present invention proposes a GGH heat exchanger with an anti-clogging structure, which has the following advantages: In this invention, several flushing pipes are installed on the fixed plate of the heat exchanger. The flushing pipes have flushing holes on both sides. The number of flushing holes is the same as the number of heat exchange tubes. During operation, water is injected at a predetermined time. The water flows through the flushing holes to flush the fixed plate at the connection of the heat exchange tubes, so as to wash away the salt residue on the fixed plate and ensure the long-term stable operation of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0022] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0023] Figure 4 This is a schematic diagram of the flushing pipe structure of this utility model;

[0024] Figure 5This is a schematic diagram of the fixing component structure of this utility model.

[0025] In the diagram: 1. Shell; 11. High-temperature flue gas inlet; 12. Low-temperature flue gas inlet; 13. Fixing plate; 14. Heat exchange tube; 2. Flushing pipe; 21. Flushing hole; 3. Main pipe; 31. Branch pipe; 32. Flange; 4. Fixing assembly; 41. Collar; 42. Connecting rod; 43. Sleeve; 44. Through hole; 45. Positioning glass bead; 46. Fastener. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figure 1-5 As one embodiment of the present utility model, a GGH heat exchanger with an anti-clogging structure is disclosed. Specifically, the heat exchanger includes a shell 1 with a high-temperature flue gas inlet 11 and a low-temperature flue gas inlet 12.

[0028] A plurality of fixing plates 13 are installed at intervals on the inner bottom of the housing 1, and a plurality of heat exchange tubes 14 are distributed in a matrix between the plurality of fixing plates 13. Specifically, in this embodiment, three fixing plates 13 are arranged at intervals.

[0029] Above the fixed plate 13, flushing pipes 2 are installed at intervals. Several flushing pipes 2 are arranged sequentially between two longitudinally adjacent rows of heat exchange tubes 14. Flushing holes 21 are also provided on both sides of the flushing pipes 2. Each flushing hole 21 is opposite to a heat exchange tube 14 in each longitudinal row. By arranging the flushing holes 21 and heat exchange tubes 14 one-to-one, when salt accumulates at the fixed plate 13, the root of the current heat exchange tube 14 can be flushed through the current flushing hole 21, thereby cleaning the salt at the fixed plate 13 where the heat exchange tube 14 is located.

[0030] In some embodiments, the present invention further includes a main pipe 3, and the main pipe 3 and a plurality of flushing pipes 2 on each fixed plate 13 are detachably connected. That is, in this embodiment, by connecting the main pipe 3 to an external water source, water can be supplied to each flushing pipe 2 to flush the fixed plate 13.

[0031] Based on the above embodiments, in this embodiment, the main pipe 3 is connected to several branch pipes 31 on its side. The branch pipes 31 are connected and fixed to the flushing pipe 2 through flanges 32. Specifically, in this embodiment, flanges 32 are provided at the ends of both the branch pipes 31 and the flushing pipe 2. The two flanges 32 are locked together by bolts. Of course, in order to achieve a seal, a sealing gasket can also be provided between the two flanges 32. This method is a conventional method for those skilled in the art and will not be described in detail here.

[0032] Furthermore, in this embodiment, the main pipe 3 and the fixing plate 13 are detachably connected by a fixing component 4. The fixing component 4 can be used to facilitate the disassembly of the main pipe 3. Of course, multiple fixing components 4 can be set at intervals in this embodiment to ensure the stability of the support for the main pipe 3.

[0033] In a preferred embodiment, the fixing component 4 of the present invention includes a collar 41 sleeved on the outside of the main pipe 3, and a connecting rod 42 is fixedly installed on the side of the collar 41.

[0034] A sleeve 43 is fixedly connected to the side of the fixing plate 13, and the connecting rod 42 is inserted into the sleeve 43. A through hole 44 is provided on the end face of the sleeve 43. A positioning glass bead 45 is embedded on the outside of the connecting rod 42. The telescopic end of the positioning glass bead 45 is engaged with the through hole 44. A fastener 46 is provided above the collar 41. Preferably, the fastener 46 in this embodiment is a bolt. The bolt is threadedly connected to the collar 41 to abut and lock the main pipe 3.

[0035] When installing the main pipe 3 and the flushing pipe 2, first connect the collar 41 to the outside of the main pipe 3, and then connect several flushing pipes 2 to the main pipe 3 through flanges 32 and lock them in place circumferentially.

[0036] Afterwards, the connecting rod 42 on the collar 41 can be inserted into the sleeve 43 on the side of the fixing plate 13. The installation of the main pipe 3 can be completed by the snap-fit ​​of the positioning glass bead 45 and the through hole 44. Of course, the main pipe 3 can also be further locked by the fastener 46 to improve its installation stability.

[0037] Furthermore, in this embodiment, several of the flushing holes 21 are arranged in two rows along the length of the flushing pipe 2;

[0038] The axis of the flushing hole 21 and the axis of the flushing pipe 2 form a 45-degree angle.

[0039] It should be noted that the flushing hole 21 is directly opposite the center of the heat exchange tube 14.

[0040] Specifically, the purpose of the 45-degree angle between the axis of the flushing hole 21 and the axis of the flushing pipe 2 in this embodiment is that, since the flushing pipe 2 has a certain height, if the flushing hole 21 is opened horizontally, the water flow will impact the outer wall of the heat exchange tube 14. Therefore, in order to ensure that the water flow can smoothly flush the surface of the fixed plate 13, the flushing hole 21 is designed with a 45-degree tilt angle so that the water flow can smoothly flush the upper end of the fixed plate 13, thereby achieving the goal of cleaning the salt on the fixed plate 13.

[0041] During operation, the equipment should be rinsed every 4 hours for about 5 minutes to remove any residual salt from the fixed plate 13, ensuring long-term stable operation.

[0042] In summary, this utility model installs several flushing pipes 2 on the fixed plate 13 of the heat exchanger. The flushing pipes 2 have flushing holes 21 on both sides. The number of flushing holes 21 is the same as the number of heat exchange tubes 14. During operation, water is injected at a predetermined time. The water flows through the flushing holes 21 to flush the fixed plate 13 at the connection point of the heat exchange tubes 14, so as to clean the salt residue on the fixed plate 13 and ensure the long-term stable operation of the equipment.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A GGH heat exchanger with an anti-clogging structure, characterized in that, include: The shell (1) is equipped with a high-temperature flue gas inlet (11) and a low-temperature flue gas inlet (12); A plurality of fixing plates (13) are installed at intervals on the inner bottom of the shell (1), and a plurality of heat exchange tubes (14) are distributed in a matrix between the plurality of fixing plates (13); A flushing pipe (2) is installed at intervals above the fixed plate (13). Several flushing pipes (2) are arranged sequentially between two longitudinally adjacent rows of heat exchange tubes (14). Flushing holes (21) are also provided on both sides of the flushing pipes (2). Several flushing holes (21) are opposite to several heat exchange tubes (14) in each longitudinal row.

2. The GGH heat exchanger with an anti-clogging structure according to claim 1, characterized in that: It also includes a main pipe (3), which is detachably connected to several flushing pipes (2) on each fixed plate (13).

3. A GGH heat exchanger with an anti-clogging structure according to claim 2, characterized in that: The main pipe (3) has several branch pipes (31) connected to its side, and the branch pipes (31) are connected and fixed to the flushing pipe (2) through flanges (32).

4. A GGH heat exchanger with an anti-clogging structure according to claim 2, characterized in that: The main pipe (3) and the fixing plate (13) are also detachably connected by a fixing component (4).

5. A GGH heat exchanger with an anti-clogging structure according to claim 4, characterized in that: The fixing component (4) includes a collar (41) sleeved on the outside of the main pipe (3), and a connecting rod (42) is fixedly installed on the side of the collar (41); A sleeve (43) is fixedly connected to the side of the fixing plate (13), and the connecting rod (42) is inserted into the sleeve (43). A through hole (44) is provided on the end face of the sleeve (43), and a positioning glass bead (45) is embedded on the outside of the connecting rod (42). The telescopic end of the positioning glass bead (45) is engaged with the through hole (44), and a fastener (46) is provided above the collar (41).

6. A GGH heat exchanger with an anti-clogging structure according to claim 1, characterized in that: The flushing holes (21) are arranged in two rows along the length of the flushing pipe (2); The axis of the flushing hole (21) and the axis of the flushing pipe (2) form a 45-degree angle.

7. A GGH heat exchanger with an anti-clogging structure according to any one of claims 1-6, characterized in that: The flushing hole (21) is located directly opposite the center of the heat exchange tube (14).

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