A flue water heat exchange component for a thermal power unit

Abstract

This utility model provides a flue gas-water heat exchange component for a thermal power unit, relating to the field of heat exchange technology. The utility model includes a housing, with a flue gas inlet pipe on one side and a flue gas outlet pipe on the side away from the inlet pipe. A water inlet pipe is also located on one side of the housing, and a water outlet pipe is located on the side away from the water inlet pipe. This utility model uses a filtration device to filter particulate matter from the flue gas entering the inlet pipe, and a cleaning brush cleans the filtered particulate matter from the filter screen. This prevents particulate matter in the flue gas from easily adhering to the outside of the heat exchange tubes, thus avoiding reduced heat exchange efficiency and preventing the flue gas temperature from effectively decreasing or the water temperature from reaching the expected level. This improves the performance of the flue gas-water heat exchange component. A collection component is used to collect the particulate matter cleaned from the filter screen, facilitating subsequent centralized treatment of particulate matter in the flue gas, thereby improving the performance of the filtration device.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange, and in particular to a flue water heat exchange component for a thermal power unit. Background Technology

[0002] The flue gas heat exchange component of a thermal power unit transfers heat from the flue gas to water or other fluids, thereby achieving heat exchange between the flue gas and water. This helps improve energy efficiency and reduce environmental pollution, and is commonly used in thermal power plants, industrial boilers, and other energy conversion systems.

[0003] When the electric heating unit is in use, the generated flue gas enters the interior of the casing through the flue gas inlet pipe on one side of the casing. Water then enters the heat exchange tubes inside the casing through the water inlet pipe on the other side. The water contacts the heat exchange tubes, absorbing heat from the flue gas. The hot water is then discharged through the water outlet pipe, and the cooled flue gas is discharged through the flue gas outlet pipe. However, when the flue gas reaches the interior of the casing, particulate matter in the flue gas easily adheres to the outside of the heat exchange tubes, reducing heat exchange efficiency. This results in the flue gas temperature not being effectively reduced, and the water temperature not reaching the expected level, thus affecting the performance of the flue-water heat exchange components. Utility Model Content

[0004] The technical problem this invention aims to solve is that when flue gas reaches the inside of the casing, particulate matter in the flue gas easily adheres to the outside of the heat exchange tube, resulting in reduced heat exchange efficiency, which prevents the flue gas temperature from being effectively reduced and the water temperature from reaching the expected level, thus affecting the performance of the flue-water heat exchange component.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a flue gas heat exchange component for a thermal power unit, including a shell, an inlet pipe on one side of the shell, an outlet pipe on the side of the shell away from the inlet pipe, a water inlet pipe on one side of the shell, an outlet pipe on the side of the shell away from the water inlet pipe, a plurality of heat exchange tubes inside the shell, and a filter device inside the inlet pipe, the filter device using a filter screen to filter particulate matter in the flue gas reaching the inside of the inlet pipe.

[0006] Preferably, the filtration device includes a first bolt, a first mounting plate, a filter screen, a round rod, a fan blade, a fixing plate, a spring, and a cleaning brush. The first bolt is inserted into one side of the first mounting plate and connected to the flue gas inlet pipe. The filter screen is connected to the first mounting plate and its size is adapted to the size of the flue gas inlet pipe. The round rod is located in the central area of ​​the filter screen and rotates. The fan blade is located on the side of the round rod away from the heat exchange tube. The fixing plate is located on the side of the round rod close to the heat exchange tube. The two ends of the spring are connected to the fixing plate and the cleaning brush, respectively. The size of the cleaning brush is adapted to the size of the filter screen. A collection device is also provided on the flue gas inlet pipe.

[0007] Preferably, a telescopic rod is fitted inside the spring, and both ends of the telescopic rod are connected to the fixing plate and the cleaning brush.

[0008] Preferably, the first mounting plate has reinforcing plates on both sides, and one side of the reinforcing plate is connected to the filter screen.

[0009] Preferably, the inner wall of the smoke inlet pipe is provided with a positioning plate, which positions the first mounting plate.

[0010] Preferably, the filter screen has several anti-slip blocks on the side near the first mounting plate to increase the friction on one side of the filter screen.

[0011] Preferably, the collecting device includes a second mounting plate, a second bolt, and a collecting frame. The second mounting plate is connected to the smoke inlet pipe, and the second bolt is inserted into one side of the collecting frame to be threadedly connected to the second mounting plate.

[0012] Preferably, a rubber ring is provided on one side of the collection frame to improve the sealing of the connection between the collection frame and the smoke inlet pipe.

[0013] In summary, the beneficial effects of this utility model are as follows:

[0014] By using a filter device, particulate matter in the flue gas entering the flue can be filtered, and a cleaning brush cleans the particulate matter filtered on the filter screen. This prevents particulate matter in the flue gas from easily adhering to the outside of the heat exchange tube, which would reduce heat exchange efficiency, prevent the flue gas temperature from being effectively reduced, and prevent the water temperature from reaching the expected effect. This improves the performance of the flue-water heat exchange component.

[0015] By using a collection component, particulate matter cleaned off the filter screen can be collected, facilitating subsequent centralized treatment of particulate matter in the flue gas and thus improving the effectiveness of the filtration device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional three-dimensional structural diagram of the outer shell of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the smoke inlet pipe of this utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of a partial three-dimensional structure;

[0020] Figure 5 This is a three-dimensional structural diagram of the filter screen of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the cleaning brush of this utility model;

[0022] Figure 7 This utility model Figure 6 A partial three-dimensional structural diagram.

[0023] Legend: 1. Outer shell; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Water inlet pipe; 5. Water outlet pipe; 6. Heat exchanger pipe; 7. Filter device; 71. First bolt; 72. First mounting plate; 73. Filter screen; 74. Round rod; 75. Fan blade; 76. Fixing plate; 77. Spring; 78. Cleaning brush; 79. Telescopic rod; 710. Reinforcing plate; 711. Positioning plate; 712. Anti-slip block; 8. Collection assembly; 81. Second mounting plate; 82. Second bolt; 83. Collection frame; 84. Rubber ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] In this embodiment:

[0028] Figures 1 to 7The diagram shows a flue gas heat exchange assembly for a thermal power unit, comprising a housing 1, an inlet pipe 2 on one side of the housing 1, an outlet pipe 3 on the side of the housing 1 away from the inlet pipe 2, a water inlet pipe 4 on one side of the housing 1, and an outlet pipe 5 on the side of the housing 1 away from the water inlet pipe 4. Several heat exchange tubes 6 are disposed inside the housing 1. A filter device 7 is disposed inside the inlet pipe 2, using a filter screen 73 to filter particulate matter from the flue gas entering the inlet pipe 2. When the thermal power unit is in use, the generated flue gas enters the housing 1 through the inlet pipe 2 on one side of the housing 1. The filter device 7 then filters the particulate matter from the flue gas entering the inlet pipe 2. Water then enters the heat exchange tubes 6 inside the housing 1 through the water inlet pipe 4 on one side of the housing 1. The water then contacts the heat exchange tubes 6, absorbing heat from the flue gas. The hot water is then discharged through the outlet pipe 5, and the cooled flue gas is discharged through the outlet pipe 3.

[0029] Figures 1 to 7 The filter device 7 shown includes a first bolt 71, a first mounting plate 72, a filter screen 73, a round rod 74, a fan blade 75, a fixing plate 76, a spring 77, and a cleaning brush 78. The first bolt 71 is inserted into one side of the first mounting plate 72 to connect with the flue pipe 2. The filter screen 73 is connected to the first mounting plate 72 and its size is adapted to the size of the flue pipe 2. The round rod 74 is located in the central area of ​​the filter screen 73 and rotates. The fan blade 75 is located on the side of the round rod 74 away from the heat exchange tube 6. The fixing plate 76 is located on the side of the round rod 74 close to the heat exchange tube 6. The two ends of the spring 77 are connected to the fixing plate 76 and the cleaning brush 78, respectively. The size of the cleaning brush 78 is adapted to the size of the filter screen 73.

[0030] Figures 1 to 7When using the filter device 7, the filter screen 73 can be placed inside the smoke inlet pipe 2. Then, the first bolt 71 is rotated to thread the first mounting plate 72 into the smoke inlet pipe 2. When the flue gas reaches the inside of the smoke inlet pipe 2 through the fan, the flue gas drives several fan blades 75 fixed on one side of the round rod 74 to rotate. Then, the round rod 74 rotates in the central area of ​​the filter screen 73. Immediately afterwards, the round rod 74 drives the fixing plate 76 fixed on one side to rotate. Then, the fixing plate 76, through the spring 77 fixed on one side, drives the cleaning brush 78 fixed on the other side of the spring 77 to rotate. The cleaning brush 78... The holes of the filter screen 73 are cleaned, and the spring 77 keeps the bristles of the cleaning brush 78 in close contact with the filter screen 73. Then, the flue gas passes through the filter screen 73, and the particulate matter inside the flue gas is intercepted and filtered by the filter screen 73. By using the filter device 7, the particulate matter in the flue gas that reaches the flue gas pipe 2 can be filtered, and the cleaning brush 78 cleans the particulate matter filtered on the filter screen 73. This prevents particulate matter in the flue gas from easily adhering to the outside of the heat exchange tube 6, which would reduce the heat exchange efficiency and prevent the flue gas temperature from being effectively reduced and the water temperature from reaching the expected effect. This improves the performance of the flue water heat exchange component.

[0031] Figures 1 to 7 The spring 77 shown has a telescopic rod 79 inside, with both ends of the telescopic rod 79 connected to the fixing plate 76 and the cleaning brush 78. By fitting the telescopic rod 79 inside the spring 77 and fixing both ends of the telescopic rod 79 to the fixing plate 76 and the cleaning brush 78, the shape of the spring 77 is restricted, preventing bending and ensuring proper use of the cleaning brush 78. The first mounting plate 72 has reinforcing plates 710 on both sides, with one side of the reinforcing plate 710 connected to the filter screen 73. The reinforcing plates 710 are fixed to the first mounting plate 72 and the filter screen 73, increasing the connection strength between the two and preventing deformation at the connection point.

[0032] Figures 1 to 7 The inner wall of the smoke inlet pipe 2 is provided with a positioning plate 711, which positions the first mounting plate 72. By fixing the positioning plate 711 to the inner wall of the smoke inlet pipe 2, the first mounting plate 72, fixed to one side of the filter screen 73, is quickly positioned inside the smoke inlet pipe 2. Several anti-slip blocks 712 are provided on the side of the filter screen 73 near the first mounting plate 72 to increase the friction on that side. By fixing the filter screen 73 to the side near the first mounting plate 72 with several anti-slip blocks 712, the friction on that side of the filter screen 73 is increased, making it easier to adjust the position of the filter screen 73.

[0033] Figures 1 to 7The collection device shown includes a second mounting plate 81, a second bolt 82, and a collection frame 83. The second mounting plate 81 is connected to the smoke inlet pipe 2, and the second bolt 82 is inserted into one side of the collection frame 83 for threaded connection with the second mounting plate 81. Before using the filter device 7, move the collection frame 83 so that it is inserted into the smoke inlet pipe 2 and fits against the second mounting plate 81 fixed to one side of the smoke inlet pipe 2. Then rotate the second bolt 82 so that it is inserted into one side of the collection frame 83 for threaded fixation with the second mounting plate 81. Then install the collection frame 83 onto one side of the smoke inlet pipe 2, with the inlet and outlet of the collection frame 83 located at the lower end of the filter screen 73. By using the collection assembly 8, particulate matter cleaned off the filter screen 73 can be collected, facilitating subsequent centralized treatment of particulate matter in the flue gas, thereby improving the effectiveness of the filter device 7. A rubber ring 84 is provided on one side of the collection frame 83 to improve the sealing of the connection between the collection frame 83 and the smoke inlet pipe 2. By fixing the rubber ring 84 to one side of the collection frame 83, the sealing of the connection between the collection frame 83 and the smoke inlet pipe 2 is improved, so that the collection frame 83 can be used better.

[0034] Working principle: When the electric heating unit is in use, the generated flue gas enters the interior of the outer casing 1 through the flue gas inlet pipe 2 on one side of the casing 1. At this time, the filter device 7 is used to filter the particulate matter in the flue gas entering the flue gas inlet pipe 2. Then, water enters the heat exchange tube 6 inside the outer casing 1 through the water inlet pipe 4 on one side of the casing 1. The water then comes into contact with the heat exchange tube 6 and absorbs the heat in the flue gas. The hot water is then discharged through the water outlet pipe 5, and the cooled flue gas is discharged through the flue gas outlet pipe 3. When using the filter device 7, the filter screen 73 can be placed inside the smoke inlet pipe 2. Then, the first bolt 71 is rotated so that it passes through the first mounting plate 72 and is threadedly fixed to the smoke inlet pipe 2. When the flue gas reaches the inside of the smoke inlet pipe 2 through the fan, the flue gas drives several fan blades 75 fixed on one side of the round rod 74 to rotate. Then, the round rod 74 rotates in the central area of ​​the filter screen 73. Immediately afterwards, the round rod 74 drives the fixing plate 76 fixed on one side to rotate. Then, the fixing plate 76, through the spring 77 fixed on one side, drives the cleaning brush 78 fixed on the other side of the spring 77 to rotate. Then, the cleaning brush 78 cleans the filter screen 73. The holes of the filter screen 73 are cleaned, and the spring 77 keeps the bristles of the cleaning brush 78 in close contact with the filter screen 73. Then, the flue gas passes through the filter screen 73, and the particulate matter inside the flue gas is intercepted and filtered by the filter screen 73. By using the filter device 7, the particulate matter in the flue gas that reaches the inside of the flue pipe 2 can be filtered, and the cleaning brush 78 cleans the particulate matter filtered on the filter screen 73. This prevents particulate matter in the flue gas from easily adhering to the outside of the heat exchange tube 6, which would reduce the heat exchange efficiency and prevent the flue gas temperature from being effectively reduced and the water temperature from reaching the expected effect. This improves the performance of the flue water heat exchange component.

[0035] Before using the filter device 7, move the collection frame 83 so that it is inserted into the smoke inlet pipe 2 and fits against the second mounting plate 81 fixed on one side of the smoke inlet pipe 2. Then, rotate the second bolt 82 so that it is inserted into one side of the collection frame 83 and threadedly fixed to the second mounting plate 81. Then, install the collection frame 83 onto one side of the smoke inlet pipe 2, with the inlet and outlet of the collection frame 83 located at the lower end of the filter screen 73. By using the collection assembly 8, the particulate matter cleaned off the filter screen 73 can be collected, which facilitates the subsequent centralized treatment of particulate matter in the flue gas, thereby improving the performance of the filter device 7.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat exchange assembly for a thermal power unit, comprising a casing (1), characterized in that: The outer shell (1) has a flue gas inlet pipe (2) on one side and a flue gas outlet pipe (3) on the side away from the flue gas inlet pipe (2). The outer shell (1) has a water inlet pipe (4) on one side and a water outlet pipe (5) on the side away from the water inlet pipe (4). The outer shell (1) has several heat exchange tubes (6) inside. The flue gas inlet pipe (2) has a filter device (7) inside. The filter device (7) uses a filter screen (73) to filter particulate matter in the flue gas that reaches the inside of the flue gas inlet pipe (2).

2. The flue water heat exchange component for a thermal power unit according to claim 1, characterized in that: The filter device (7) includes a first bolt (71), a first mounting plate (72), a filter screen (73), a round rod (74), a fan blade (75), a fixing plate (76), a spring (77), and a cleaning brush (78). The first bolt (71) is inserted into one side of the first mounting plate (72) and connected to the flue gas pipe (2). The filter screen (73) is connected to the first mounting plate (72) and its size is adapted to the size of the flue gas pipe (2). The round rod (74) is located in the central area of ​​the filter screen (73) and rotates. The fan blade (75) is located on the side of the round rod (74) away from the heat exchange tube (6). The fixing plate (76) is located on the side of the round rod (74) close to the heat exchange tube (6). The two ends of the spring (77) are connected to the fixing plate (76) and the cleaning brush (78) respectively. The size of the cleaning brush (78) is adapted to the size of the filter screen (73). A collection device is also provided on the flue gas pipe (2).

3. The flue water heat exchange component for a thermal power unit according to claim 2, characterized in that: The spring (77) is fitted with a telescopic rod (79), and the two ends of the telescopic rod (79) are connected to the fixing plate (76) and the cleaning brush (78).

4. The flue water heat exchange component for a thermal power unit according to claim 3, characterized in that: The first mounting plate (72) has reinforcing plates (710) on both sides, and one side of the reinforcing plate (710) is connected to the filter screen (73).

5. A flue water heat exchange component for a thermal power unit according to claim 4, characterized in that: The inner wall of the smoke inlet pipe (2) is provided with a positioning plate (711), which positions the first mounting plate (72).

6. A flue water heat exchange component for a thermal power unit according to claim 5, characterized in that: The filter screen (73) has several anti-slip blocks (712) on the side near the first mounting plate (72) to increase the friction on one side of the filter screen (73).

7. A flue water heat exchange component for a thermal power unit according to claim 6, characterized in that: The collecting device includes a second mounting plate (81), a second bolt (82), and a collecting frame (83). The second mounting plate (81) is connected to the smoke inlet pipe (2), and the second bolt (82) is inserted into one side of the collecting frame (83) and threadedly connected to the second mounting plate (81).

8. A flue water heat exchange component for a thermal power unit according to claim 7, characterized in that: A rubber ring (84) is provided on one side of the collection frame (83) to improve the sealing of the connection between the collection frame (83) and the smoke inlet pipe (2).

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