Waste heat utilization device of thermal power generating unit

Abstract

The utility model provides a thermal power generating unit waste heat utilization device which comprises a first pipeline, a second pipeline and a supporting frame, liquid flow flows into a heat exchange pipe through the first pipeline, and high-temperature smoke of a thermal power generating unit enters a conveying pipe through the second pipeline. The conveying pipe is arranged in a containing cavity of the heat exchange pipe, heat exchange between liquid flow and high-temperature flue gas is achieved, the supporting beam comprises a cross beam, a longitudinal beam and a supporting beam body, a plurality of clamping jaws are arranged on the cross beam, and the outer wall of the heat exchange pipe and the outer wall of the conveying pipe are clamped through the clamping jaws. Impact fluctuation caused by the heat exchange pipes and the connecting pipes in the liquid flow conveying process is limited, the whole supporting frame is stably supported through the supporting beams arranged at the ends of the cross beams, and the situation that the whole supporting beams shake greatly is prevented; therefore, the supporting stability of the heat exchange tube is improved, and then the waste heat utilization stability of the smoke of the thermal power generating unit is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization equipment for thermal power generation units, in particular to a waste heat utilization device for thermal power generation units. Background Art

[0002] Thermal power plants generate a significant amount of waste heat during operation. By utilizing this waste heat, previously wasted energy can be converted into useful energy, thereby improving the energy efficiency of the entire thermal power plant. Waste heat utilization can reduce the amount of heat emitted by thermal power plants, thereby reducing thermal pollution to the surrounding environment. Furthermore, by improving energy efficiency, greenhouse gas and other pollutant emissions are correspondingly reduced, meeting environmental requirements for energy conservation and emission reduction.

[0003] Thermal power plants generate large amounts of high-temperature flue gas during operation, which can be recovered through waste heat boilers (WHRBs). These boilers utilize the heat from the high-temperature flue gas to heat water into steam. Specifically, the high-temperature flue gas enters the WHRB and exchanges heat with the water within the boiler through heat exchange tubes. However, current heat exchange tubes experience significant impacts during heat exchange between the flue gas and water due to fluctuations in the flue gas or water flow, which in turn affects the operational stability and heat exchange stability of the waste heat utilization device. Utility Model Content

[0004] In view of this, the technical problem to be solved by the present invention is: how to provide a waste heat utilization device for a thermal power unit to improve the support stability of the heat exchange tubes and thereby ensure the stability of waste heat utilization of the flue gas of the thermal power unit.

[0005] To achieve the above-mentioned purpose, the utility model provides a waste heat utilization device for a thermal power unit, which includes a first pipeline, a second pipeline and a support frame;

[0006] The first pipeline includes a heat exchange tube, a water inlet port, and a water outlet port. The multiple heat exchange tubes are arranged in parallel and connected in sequence by connecting pipes. The interior of the heat exchange tube forms a receiving cavity, and the receiving cavity extends along the axial direction of the heat exchange tube. The water inlet port is provided at one end of the heat exchange tube, and the water outlet port is provided at the other end of the heat exchange tube. Liquid flows into the interior of the heat exchange tube through the water inlet port and is discharged outward from the water outlet port.

[0007] The second pipeline includes a delivery pipe, an air inlet port, and an air outlet port. The delivery pipe is provided inside the accommodating cavity, and the outer wall of the delivery pipe is in contact with the inner wall of the accommodating cavity. The air inlet port is provided at one end of the delivery pipe, and the air outlet port is provided at the other end of the delivery pipe. Hot air enters the delivery pipe through the air inlet port and is discharged from the air outlet port.

[0008] The support frame includes a crossbeam, a longitudinal beam and a support beam. Multiple crossbeams are arranged at intervals along the vertical direction, and multiple longitudinal beams are arranged at intervals along the width direction. Multiple crossbeams and multiple longitudinal beams are cross-connected to each other. Claws are provided on the crossbeams, and the claws are respectively provided on both sides of the crossbeam. The claws are connected to the part of the conveying pipe that extends beyond the end of the heat exchange pipe and the outer wall of the heat exchange pipe. The support beam is provided at the end of the crossbeam and is perpendicular to the crossbeam. Anti-slip rubber pads are provided at both ends of the support beam.

[0009] Furthermore, the claw is arc-shaped and an opening is formed on a side of the claw.

[0010] Furthermore, the support beam is connected to the longitudinal beam by welding, and the longitudinal beam is connected to the cross beam by welding.

[0011] Furthermore, the opening formed on the side of the claw faces the horizontal direction.

[0012] Compared with the related art, the utility model proposes a waste heat utilization device for a thermal power unit, which has the following beneficial effects: the liquid flow flows into the interior of the heat exchange tube through the first pipeline, and the high-temperature flue gas of the thermal power unit enters the delivery pipe through the second pipeline. The delivery pipe is arranged in the accommodating cavity of the heat exchange tube and thereby realizes heat exchange between the liquid flow and the high-temperature flue gas. The support beam includes a cross beam, a longitudinal beam and a support beam. A plurality of claws are arranged on the cross beam and the claws are used to clamp the outer wall of the heat exchange tube and the outer wall of the delivery pipe, thereby limiting the impact fluctuation caused by the heat exchange tube and the connecting pipe in the process of conveying the liquid flow, and the support beam arranged at the end of the cross beam is used to achieve stable support for the entire support frame, preventing the entire support beam from shaking significantly, thereby improving the support stability of the heat exchange tube and ensuring the stability of waste heat utilization of the flue gas of the thermal power unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a waste heat utilization device for a thermal power unit in an embodiment of the present utility model;

[0014] Figure 2 Schematic diagram of the structure of the support frame in the embodiment of the present utility model. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0016] See Figure 1-2 As shown, the present invention provides a waste heat utilization device for a thermal power unit, which includes a first pipeline, a second pipeline and a support frame 30.

[0017] The first pipeline includes a heat exchange tube 11, a water inlet port 12 and a water outlet port 13. The multiple heat exchange tubes 11 are arranged in parallel and connected in sequence through connecting pipes. A receiving cavity is formed inside the heat exchange tube 11, and the receiving cavity extends along the axial direction of the heat exchange tube 11. The water inlet port 12 is set at one end of the heat exchange tube 11, and the water outlet port 13 is set at the other end of the heat exchange tube 11. The liquid flows into the interior of the heat exchange tube 11 through the water inlet port and is discharged outward from the water outlet port 13.

[0018] The second pipeline includes a delivery pipe 21, an air inlet port 22 and an air outlet port 23. The delivery pipe 21 is arranged inside the accommodating cavity and the outer wall of the delivery pipe 21 is in contact with the inner wall of the accommodating cavity. The air inlet port 22 is arranged at one end of the delivery pipe 21, and the air outlet port 23 is arranged at the other end of the delivery pipe 21. The hot air enters the delivery pipe 21 through the air inlet port 22 and is discharged outward from the air outlet port 23.

[0019] The liquid flows into the interior of the heat exchange tube 11 through the first pipeline, and the high-temperature flue gas of the thermal power unit enters the delivery pipe 21 through the second pipeline. The delivery pipe 21 is arranged in the accommodating cavity of the heat exchange tube 11 to thereby realize heat exchange between the liquid flow and the high-temperature flue gas.

[0020] The support frame 30 includes a cross beam 31, a longitudinal beam 32 and a support beam 33. Multiple cross beams 31 are arranged at intervals along the vertical direction, and multiple longitudinal beams 32 are arranged at intervals along the width direction. The support beams 33 are welded to the longitudinal beams 32, and the longitudinal beams 32 are welded to the cross beams 31. Multiple cross beams 31 and multiple longitudinal beams 32 are cross-connected to each other.

[0021] Claws 34 are provided on the crossbeam 31 , and the claws 34 are respectively provided on both sides of the crossbeam 31 . The claws 34 are arc-shaped and have openings formed on the sides of the claws 34 . The openings formed on the sides of the claws 34 face the horizontal direction. The claws 34 are connected to the portion of the delivery pipe 21 that extends beyond the end of the heat exchange pipe 11 and to the outer wall of the heat exchange pipe 11 .

[0022] The support beam 33 includes a cross beam 31, a longitudinal beam 32 and a support beam 33. A plurality of claws 34 are provided on the cross beam 31, and the claws 34 are used to clamp the outer wall of the heat exchange tube 11 and the outer wall of the delivery tube 21, thereby limiting the impact fluctuations caused by the heat exchange tube 11 and the connecting pipe during the liquid flow delivery process.

[0023] The support beam 33 is arranged at the end of the cross beam 31 and is arranged perpendicular to the cross beam 31. Anti-slip rubber pads are provided at both ends of the support beam 33. The support beam 33 provided at the end of the cross beam 31 can achieve stable support for the entire support frame 30, preventing the support beam 33 from shaking significantly as a whole, thereby improving the support stability of the heat exchange tube 11 and thus ensuring the stability of the utilization of the waste heat of the flue gas of the thermal power unit. Among them, the anti-slip rubber pads provided on both sides of the support beam 33 can limit the shaking of the end of the support beam 33, thereby ensuring the overall stability of the support beam 33.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A waste heat utilization device for a thermal power unit, characterized in that: It includes a first pipeline, a second pipeline and a support frame; The first pipeline includes a heat exchange tube, a water inlet port, and a water outlet port. The multiple heat exchange tubes are arranged in parallel and connected in sequence by connecting pipes. The interior of the heat exchange tube forms a receiving cavity, and the receiving cavity extends along the axial direction of the heat exchange tube. The water inlet port is provided at one end of the heat exchange tube, and the water outlet port is provided at the other end of the heat exchange tube. Liquid flows into the interior of the heat exchange tube through the water inlet port and is discharged outward from the water outlet port. The second pipeline includes a delivery pipe, an air inlet port, and an air outlet port. The delivery pipe is provided inside the accommodating cavity, and the outer wall of the delivery pipe is in contact with the inner wall of the accommodating cavity. The air inlet port is provided at one end of the delivery pipe, and the air outlet port is provided at the other end of the delivery pipe. Hot air enters the delivery pipe through the air inlet port and is discharged from the air outlet port. The support frame includes a crossbeam, a longitudinal beam and a support beam. Multiple crossbeams are arranged at intervals along the vertical direction, and multiple longitudinal beams are arranged at intervals along the width direction. Multiple crossbeams and multiple longitudinal beams are cross-connected to each other. Claws are provided on the crossbeams, and the claws are respectively provided on both sides of the crossbeam. The claws are connected to the part of the conveying pipe that extends beyond the end of the heat exchange pipe and the outer wall of the heat exchange pipe. The support beam is provided at the end of the crossbeam and is perpendicular to the crossbeam. Anti-slip rubber pads are provided at both ends of the support beam.

2. The waste heat utilization device of a thermal power unit according to claim 1, characterized in that: The clamping claw is arc-shaped and has an opening formed on a side thereof.

3. The waste heat utilization device of a thermal power unit according to claim 2, characterized in that: The support beam is connected to the longitudinal beam by welding, and the longitudinal beam is connected to the cross beam by welding.

4. The waste heat utilization device of a thermal power unit according to claim 1, characterized in that: The opening formed on the side of the claw faces the horizontal direction.

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