A waste heat grading recovery device for a generator set

Abstract

The utility model discloses a kind of waste heat grading recovery devices for generator set, including waste heat grading recovery device;The utility model is provided with waste heat grading recovery device, in the process of operation, high-temperature waste gas will be circulated by flue pipe, with the aid of baffle plate, waste gas can be guided to repeatedly flow along the inside of flue pipe, increase the path length of waste gas, extend the residence time of waste gas in flue pipe, to improve the heat recovery effect, by being respectively provided with one heat exchange tube and second heat exchange tube in the both ends of flue pipe, in the process of waste heat recovery, heat exchange medium enters from the top port of one heat exchange tube and second heat exchange tube, after completing heat exchange with the surface of flue pipe, it is discharged from the bottom port of one heat exchange tube and second heat exchange tube, to realize waste heat recovery, the waste gas of different pipe section position of flue pipe exists temperature gradient section, one heat exchange tube and second heat exchange tube can use adaptive heat exchange medium according to the waste gas of different temperature gradient section, realize grading management, improve heat recovery efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically a graded waste heat recovery device for generator sets. Background Technology

[0002] Diesel generator sets generate high-temperature exhaust gas during operation. Current technology typically uses heat exchangers to recover and utilize the waste heat from the high-temperature exhaust gas in order to reduce energy consumption and save operating costs.

[0003] Existing patent application number: 202022592611.3 A waste heat recovery device for a diesel generator set includes a diesel generator set body, a heat-absorbing shell, a temperature display, a filter mechanism, and a water valve. The heat-absorbing shell is fixedly connected to the outer wall of the diesel generator set body by bolts. The temperature display is fixedly connected to the top center of the heat-absorbing shell. The filter mechanism is fixedly installed on the right side of the heat-absorbing shell, and the water valve is fixedly installed on the right side of the filter mechanism.

[0004] The aforementioned patent describes a waste heat recovery device for generators. In practical applications, the residence time of exhaust gas in the waste heat recovery device is relatively short, affecting the heat recovery efficiency. The waste heat recovery device lacks graded management and does not use suitable heat exchange media according to different temperature ranges of exhaust gas, resulting in mediocre heat recovery effect. Therefore, we propose a graded waste heat recovery device for generator sets to solve the above problems. Utility Model Content

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

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a waste heat recovery device for generator sets, comprising a waste heat recovery device, wherein the waste heat recovery device comprises a flue, baffles, a first heat exchange tube and a second heat exchange tube, the inner wall of the flue is provided with baffles welded at equal intervals, the rear half of the outer surface of the flue is sealed and fitted with the first heat exchange tube, and the front half of the outer surface of the flue is sealed and fitted with the second heat exchange tube.

[0007] Preferably, the installation angles between adjacent baffles are staggered by 90 degrees.

[0008] Preferably, the baffle is inclined.

[0009] Preferably, the No. 1 heat exchange tube and the No. 2 heat exchange tube are an integral pipe structure, wherein an annular partition is welded between the No. 1 heat exchange tube and the No. 2 heat exchange tube, and the annular partition is sealed and fitted outside the flue pipe.

[0010] Preferably, fins are welded around the outer surface of the flue pipe, and the fins are distributed inside the No. 1 heat exchange pipe and the No. 2 heat exchange pipe.

[0011] Preferably, temperature sensors are evenly distributed on the surfaces of the first and second heat exchange tubes, and the end probes of the temperature sensors are installed through the inside of the flue.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention incorporates a waste heat recovery device. During operation, high-temperature exhaust gas flows through the flue pipe. With the help of baffles, the exhaust gas is guided to repeatedly deflect along the inside of the flue pipe, increasing the path length of the exhaust gas and prolonging its residence time in the flue pipe, thereby improving the heat recovery effect.

[0014] This invention achieves waste heat recovery by setting a No. 1 heat exchange tube and a No. 2 heat exchange tube at both ends of the flue pipe. During the waste heat recovery process, the heat exchange medium enters from the top ports of the No. 1 and No. 2 heat exchange tubes, completes heat exchange with the surface of the flue pipe, and then exits from the bottom ports of the No. 1 and No. 2 heat exchange tubes, thereby realizing waste heat recovery from the exhaust gas. The exhaust gas at different sections of the flue pipe has temperature gradients. The No. 1 and No. 2 heat exchange tubes can use appropriate heat exchange media according to the exhaust gas at different temperature gradients, realizing hierarchical management and improving heat recovery efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the left-side cross-sectional structure of the flue pipe in this utility model;

[0017] Figure 3 This is a front view cross-sectional structural diagram of the flue pipe in this utility model.

[0018] In the diagram: Waste heat graded recovery device-1, flue-11, baffle-12, heat exchange tube No. 1-13, heat exchange tube No. 2-14, annular partition-15, fins-16, temperature sensor-17. Detailed Implementation

[0019] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0020] Please see Figure 1This utility model provides a waste heat recovery device for generator set exhaust gas, including a waste heat recovery device 1. The waste heat recovery device 1 includes a flue pipe 11, a baffle plate 12, a first heat exchange tube 13 and a second heat exchange tube 14. The baffle plate 12 is welded to the inner wall of the flue pipe 11 at equal intervals. The first heat exchange tube 13 is installed in a sealed sleeve on the rear half of the outer surface of the flue pipe 11, and the second heat exchange tube 14 is installed in a sealed sleeve on the front half of the outer surface of the flue pipe 11.

[0021] Please see Figure 2 This utility model provides a waste heat recovery device for generator sets. The installation angles between adjacent baffles 12 are staggered by 90 degrees to better guide the waste gas to undergo repeated deflection, prolong the residence time of the waste gas in the flue pipe 11, and improve the heat recovery effect. In addition, the baffles 12 are inclined to reduce the flow resistance of the waste gas and ensure the internal flow of the flue pipe 11.

[0022] To further explain, the No. 1 heat exchange tube 13 and the No. 2 heat exchange tube 14 are integrated into a single pipe structure. An annular partition 15 is welded between the No. 1 heat exchange tube 13 and the No. 2 heat exchange tube 14. The annular partition 15 separates the internal space of the No. 1 heat exchange tube 13 and the No. 2 heat exchange tube 14. The annular partition 15 is sealed and fitted onto the outside of the flue pipe 11, achieving structural integration and ensuring the overall strength of the equipment.

[0023] Please see Figure 3 This utility model provides a waste heat recovery device for generator sets. Fins 16 are welded around the outer surface of the flue pipe 11. The fins 16 are distributed inside the first heat exchange pipe 13 and the second heat exchange pipe 14. The fins 16 can increase the contact area between the flue pipe 11 and the heat exchange medium and improve the heat recovery efficiency.

[0024] Temperature sensors 17 are evenly distributed on the surface of heat exchange tube 13 and heat exchange tube 14. The probe at the end of the temperature sensor 17 is installed inside the flue pipe 11, so that the staff can intuitively understand the exhaust gas temperature at different sections of the flue pipe 11.

[0025] Specifically, by setting up a waste heat graded recovery device 1, the flue pipe 11 is first connected to the exhaust pipe system of the generator set, and then the first heat exchange pipe 13 and the second heat exchange pipe 14 are connected to the heat exchange equipment. During operation, the high-temperature exhaust gas will circulate through the flue pipe 11. With the help of the baffle plate 12, the exhaust gas can be guided to repeatedly deflect along the inside of the flue pipe 11, increasing the path length of the exhaust gas and prolonging the residence time of the exhaust gas in the flue pipe 11, thereby improving the heat recovery effect.

[0026] By installing heat exchange tube 13 and heat exchange tube 14 at both ends of the flue pipe 11, the heat exchange medium enters from the top ports of heat exchange tube 13 and heat exchange tube 14 during the waste heat recovery process. After completing heat exchange with the surface of the flue pipe 11, it is discharged from the bottom ports of heat exchange tube 13 and heat exchange tube 14, thereby realizing the recovery of waste heat from the exhaust gas. The exhaust gas at different sections of the flue pipe 11 has temperature gradients. Heat exchange tube 13 and heat exchange tube 14 can use appropriate heat exchange media according to the exhaust gas at different temperature gradients to achieve hierarchical management and improve the efficiency of heat recovery.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 staged recovery device for waste heat from generator sets, characterized in that: The waste heat recovery device (1) includes a flue (11), a baffle (12), a first heat exchange tube (13) and a second heat exchange tube (14). The inner wall of the flue (11) is equidistantly welded with baffles (12). The rear half of the outer surface of the flue (11) is sealed with the first heat exchange tube (13), and the front half of the outer surface of the flue (11) is sealed with the second heat exchange tube (14).

2. The waste heat recovery device for generator sets according to claim 1, characterized in that: The installation angles between adjacent baffles (12) are staggered by 90 degrees.

3. The waste heat recovery device for generator sets according to claim 1, characterized in that: The baffle plate (12) is inclined.

4. The waste heat recovery device for generator sets according to claim 1, characterized in that: The first heat exchange tube (13) and the second heat exchange tube (14) are an integral pipe structure, wherein an annular partition (15) is welded between the first heat exchange tube (13) and the second heat exchange tube (14), and the annular partition (15) is sealed and fitted outside the flue pipe (11).

5. The waste heat recovery device for generator sets according to claim 1, characterized in that: The outer surface of the flue (11) is circumferentially welded with fins (16), which are distributed inside the first heat exchange tube (13) and the second heat exchange tube (14).

6. The waste heat recovery device for generator sets according to claim 1, characterized in that: Temperature sensors (17) are evenly distributed on the surfaces of the first heat exchange tube (13) and the second heat exchange tube (14), and the probe at the end of the temperature sensor (17) is installed through into the inside of the flue (11).

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