A heat energy recovery device for power engineering

Abstract

The utility model discloses a kind of heat recovery devices for power engineering, including bottom plate, heat recovery tank and heat exchange pipe, heat recovery tank is installed at the top of bottom plate by bolt, the one end of water inlet pipe section is provided with filter drum installation bottom plate, water inlet pipe section is installed with front filter sleeve by filter drum installation bottom plate, first metal filter element and second filter inner core are installed in the inside of front filter sleeve, second filter inner core is located in the inside of first metal filter element and realizes limit by filter drum installation bottom plate, secondary filtration passageway is arranged between first metal filter element and second filter inner core, second filter inner core is communicated water inlet pipe section by flow guide portion.The utility model can filter the water that enters the heat exchange pipe inside heat recovery tank, so that impurities in water is reduced, avoid scale formation on the inner wall of heat exchange pipe, keep heat exchange rate stable, simultaneously, multiple cross heat absorption blocks are provided at the pipe wall of heat exchange pipe, further ensure heat exchange rate.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, specifically to a heat recovery device for power engineering. Background Technology

[0002] Power engineering is an applied engineering technology that studies the theories and technologies of energy conversion, transmission, and utilization in the engineering field, aiming to improve energy efficiency, reduce primary energy consumption and pollutant emissions, and promote the sustainable development of the national economy. It is closely related to human production and life, has a long history, and belongs to one of the three cutting-edge fields of energy, information, and materials in 21st-century economic development. In the process of using thermal energy as a power source for processing, the thermal energy is generally directly emitted through high-temperature exhaust gases, necessitating the recovery of thermal energy from these gases.

[0003] In the prior art, patent number CN202421192359.9 discloses a heat recovery device for thermal power engineering, including a main body with a heat exchange chamber inside. A water inlet is located on one side of the main body, and several heat exchange tubes are arranged inside the heat exchange chamber. A water outlet is located on one side of the main body, connected to both the water inlet and the heat exchange tubes. Several partitions are arranged inside the heat exchange chamber, and one end of each heat exchange tube passes through a partition and is positioned on one side of the partition. An air inlet is located on one side of the main body, connected to the heat exchange chamber, and a hot air inlet pipe is arranged inside the air inlet. This solution uses a limiting mechanism to facilitate the installation or removal of the hot air inlet pipe, improving its usability. A fixing mechanism enhances the stability of the filter plate installation, facilitating its removal for cleaning and maintenance.

[0004] The disadvantage of the above-disclosed heat recovery device is that, during use, no filter device is added to the water inlet, so it cannot filter the incoming water, which easily causes scale to form inside the pipe. Over time, this leads to a decrease in the heat exchange rate of the pipe and poor heat recovery. Therefore, we have designed a heat recovery device for power engineering. Utility Model Content

[0005] The purpose of this invention is to provide a heat recovery device for power engineering to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat energy recovery device for power engineering, comprising a base plate, a heat energy recovery box, and a heat exchange pipe. The heat energy recovery box is bolted to the top of the base plate. The heat exchange pipe is disposed inside the heat energy recovery box. The inlet of the heat exchange pipe extends out of one side of the heat energy recovery box and is fitted with an inlet pipe section. One end of the inlet pipe section is fitted with a filter cylinder mounting base plate. A pre-filter sleeve is mounted on the inlet pipe section via the filter cylinder mounting base plate. A first metal filter element and a second filter inner core are installed inside the pre-filter sleeve. The second filter inner core is disposed inside the first metal filter element and is limited by the filter cylinder mounting base plate. A secondary filtration channel is provided between the first metal filter element and the second filter inner core. The second filter inner core is connected to the inlet pipe section via a guide section.

[0007] Preferably, a flexible tube is provided at one end of the pre-filter sleeve, the flexible tube is sealed at one end of the pre-filter sleeve by a cap, and a flange connection is fixedly provided at one end of the flexible tube.

[0008] Preferably, the bottom end of the pre-filter sleeve is provided with a filter cake channel, and one end of the filter cake channel is fitted with a threaded seal. Preferably, the inner cavity of the heat recovery box is equipped with multiple pipe retainers, and the heat exchange pipe is limited in the inner cavity of the heat recovery box by the multiple pipe retainers.

[0009] Preferably, the inner cavity of the heat recovery box is provided with multiple heat-insulating inner lining pads.

[0010] Preferably, the heat exchange tube has multiple cross-shaped heat absorption blocks on its wall, with equal spacing between every two cross-shaped heat absorption blocks. Preferably, the heat recovery box has a maintenance plate at its top opening, which is bolted to the heat recovery box and presses against the pipe retainer.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: a pre-filter sleeve is installed in the water inlet pipe section through a filter cylinder mounting base plate. A first metal filter element and a second filter inner core are installed inside the pre-filter sleeve. The second filter inner core is located inside the first metal filter element and is limited by the filter cylinder mounting base plate. A secondary filtration channel is provided between the first metal filter element and the second filter inner core. This can filter the water entering the heat exchange tube inside the heat recovery tank, reduce impurities in the water, prevent scale from forming on the inner wall of the heat exchange tube, and maintain a stable heat exchange rate. At the same time, multiple cross-shaped heat absorption blocks are provided on the tube wall of the heat exchange tube to further ensure the heat exchange rate. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2This is a schematic diagram of the structure of the first metal filter element and the second metal filter element of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the heat recovery box of this utility model.

[0015] In the diagram: 1. Base plate; 2. Heat recovery box; 3. Inspection plate; 4. Inlet pipe section; 5. Pre-filter sleeve; 6. Hoses; 7. Flange connection; 8. Heat exchange pipes; 9. Insulating liner; 10. Pipe retainer; 11. Cross heat absorption block; 12. Filter cartridge mounting base plate; 13. First metal filter element; 14. Second metal filter element; 15. Secondary filtration channel; 16. Flow guide; 17. Filter residue channel; 18. Threaded seal. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution:

[0018] Example 1: The recovery device includes a base plate 1, a heat recovery box 2, and a heat exchange pipe 8. The heat recovery box 2 also includes an inlet / outlet (not shown in the figure) for hot gas, distributed on the front or back of the heat recovery box 2, which can be connected to flange components. The heat recovery box 2 is bolted to the top of the base plate 1. The heat exchange pipe 8 is located inside the heat recovery box 2. The water inlet of the heat exchange pipe 8 extends out to one side of the heat recovery box 2 and is equipped with a water inlet pipe section 4. One end of the water inlet pipe section 4 is equipped with a filter cartridge mounting base plate 12. The water inlet pipe section 4 is mounted through the filter cartridge mounting base plate 12. The pre-filter sleeve 5 contains a first metal filter element 13 and a second filter inner core 14. The second filter inner core 14 is located inside the first metal filter element 13 and is limited by the filter sleeve mounting base plate 12. A secondary filtration channel 15 is provided between the first metal filter element 13 and the second filter inner core 14. The second filter inner core 14 is connected to the water inlet pipe section 4 through the guide part 16. A hose 6 is provided at one end of the pre-filter sleeve 5. The hose 6 is sealed at one end of the pre-filter sleeve 5 by a cap. A flange connection part 7 is fixedly provided at one end of the hose 6.

[0019] This solution filters the water entering the heat exchange tube 8 inside the heat recovery tank 2, reducing impurities in the water, preventing scale buildup on the inner wall of the heat exchange tube, and maintaining a stable heat exchange rate.

[0020] Furthermore, multiple cross-shaped heat-absorbing blocks 11 are welded to the wall of the heat exchange tube 8 to ensure the airtightness of the connection with the heat exchange tube 8, and the spacing between every two cross-shaped heat-absorbing blocks 11 is equal.

[0021] Example 2: Based on Example 1, the same structure will not be described again. To facilitate the removal of impurities, as shown below... Figure 2 As shown, a filter cake channel 17 is provided at the bottom of the pre-filter sleeve 5, and a threaded sealing seat 18 is installed at one end of the filter cake channel 17.

[0022] Example 3: The recovery device includes a base plate 1, a heat recovery box 2, and a heat exchange pipe 8. The heat recovery box 2 also includes an inlet and outlet for hot air, distributed on the front or back of the heat recovery box 2, which can be connected to a flange component. The heat recovery box 2 is bolted to the top of the base plate 1. The heat exchange pipe 8 is located inside the heat recovery box 2. The water inlet of the heat exchange pipe 8 extends out of one side of the heat recovery box 2 and is equipped with a water inlet pipe section 4. One end of the water inlet pipe section 4 is equipped with a filter cylinder mounting base plate 12. A flexible hose 6 is installed on the water inlet pipe section 4 through the filter cylinder mounting base plate 12. One end of the flexible hose 6 is fixedly equipped with a flange connection part 7.

[0023] Example 4: Based on Example 3, multiple pipe retainers 10 are installed inside the heat recovery box 2, and the heat exchange pipe 8 is limited within the heat recovery box 2 by the multiple pipe retainers 10; multiple heat-insulating inner linings 9 are provided inside the heat recovery box 2. This solution can maintain the temperature of the heat exchange pipe 8 while preventing heat loss to the outside.

[0024] In Embodiments 1 to 4, a maintenance plate 3 is provided at the top opening of the heat recovery box 2. The maintenance plate 3 is installed on the heat recovery box 2 by bolts and presses against the pipe retainer 10.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

Claims

1. A heat recovery device for power engineering, comprising a base plate (1), a heat recovery box (2), and a heat exchange pipe (8), wherein the heat recovery box (2) is bolted to the top of the base plate (1), the heat exchange pipe (8) is disposed inside the heat recovery box (2), the inlet of the heat exchange pipe (8) extends out of one side of the heat recovery box (2) and is fitted with an inlet pipe section (4), and one end of the inlet pipe section (4) is fitted with a filter cartridge mounting base plate (12), characterized in that, The inlet pipe section (4) is equipped with a pre-filter sleeve (5) through the filter cylinder mounting base plate (12). The pre-filter sleeve (5) is equipped with a first metal filter element (13) and a second filter inner core (14). The second filter inner core (14) is located inside the first metal filter element (13) and is limited by the filter cylinder mounting base plate (12). A secondary filtration channel (15) is provided between the first metal filter element (13) and the second filter inner core (14). The second filter inner core (14) is connected to the inlet pipe section (4) through the guide part (16).

2. The heat recovery device for power engineering according to claim 1, characterized in that, A flexible hose (6) is provided at one end of the pre-filter sleeve (5). The flexible hose (6) is sealed at one end of the pre-filter sleeve (5) by a cap. A flange connection (7) is fixedly provided at one end of the flexible hose (6).

3. A heat recovery device for power engineering according to claim 2, characterized in that, The bottom end of the pre-filter sleeve (5) is provided with a filter cake channel (17), and a threaded sealing seat (18) is installed at one end of the filter cake channel (17).

4. The heat recovery device for power engineering according to claim 1, characterized in that, The inner cavity of the heat recovery box (2) is equipped with multiple pipe retainers (10), and the heat exchange pipe (8) is limited in the inner cavity of the heat recovery box (2) by the multiple pipe retainers (10).

5. A heat recovery device for power engineering according to claim 1, characterized in that, The inner cavity of the heat recovery box (2) is provided with multiple heat-insulating inner linings (9).

6. A heat recovery device for power engineering according to claim 1, characterized in that, The heat exchange tube (8) has multiple cross-shaped heat absorption blocks (11) arranged on its wall, and the distance between any two cross-shaped heat absorption blocks (11) is equal.

7. A heat recovery device for power engineering according to claim 4, characterized in that, The heat recovery box (2) has a maintenance plate (3) at the top opening. The maintenance plate (3) is installed on the heat recovery box (2) by bolts and presses against the pipe retainer (10).

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