Waste heat recovery heating mechanism for low-concentration gas power generation

Abstract

The utility model relates to a low-concentration gas power generation waste heat recovery technology, belongs to the field of energy recycling, and discloses a waste heat recovery heating mechanism for low-concentration gas power generation, which comprises an outer-layer water tank and a built-in water tank fixedly mounted in the outer-layer water tank. A heat exchange water inlet pipe and a water drainage pipe are arranged on the outer side face of the outer-layer water tank, a water conveying pipe is arranged on the top face of the built-in water tank, a plurality of sets of heat exchange fin assemblies are arranged between the outer-layer water tank and the built-in water tank, and each heat exchange fin assembly comprises an outer-side fin and an inner-side fin. Heat is transferred to the outer fins through the inner fins and then transferred to a circulating water source in the outer water tank through the outer fins, the water source in the outer water tank absorbs the heat and then converts the heat into hot water for heating or other purposes, and heat transfer is effectively enhanced through the design that the heat contact area is increased through the fin assembly. And the overall heat recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy recovery and utilization, in particular to a waste heat recovery and heating mechanism for low-concentration gas power generation. Background Art

[0002] As a viable energy resource, low-concentration gas (LCM) generates waste heat from its power generation process, making it an important target for recycling. In industrial production, heating, and power generation, waste heat recovery technology not only helps improve energy efficiency but also effectively reduces energy consumption and environmental pollution.

[0003] Traditional waste heat recovery technologies primarily transfer heat from exhaust gases to cooling water or other media through direct heat exchangers, typically employing simple pipes or finned heat exchangers. However, these traditional methods often suffer from low heat exchange efficiency, insufficient heat transfer area, and inadequate waste heat utilization. For example, traditional water cooling systems often fail to effectively increase the heat exchange area through multi-layered heat exchange structures, resulting in slower heat transfer, inadequate recovery of some heat energy, and potentially even energy waste.

[0004] To this end, we propose a waste heat recovery heating mechanism for low-concentration gas power generation. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a waste heat recovery heating mechanism for low-concentration gas power generation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a waste heat recovery heating mechanism for low-concentration gas power generation, comprising an outer water tank and an inner water tank, the inner water tank being fixedly mounted inside the outer water tank, a hot water inlet pipe and a drain pipe being respectively provided on the outer side surface of the outer water tank, a water delivery pipe being provided on the top surface of the inner water tank, and a second drain pipe being fixedly mounted on the bottom surface of the inner water tank, the free end of the second drain pipe extending outward through the bottom surface of the outer water tank;

[0007] Multiple groups of heat exchange fin assemblies are arranged between the outer water tank and the built-in water tank. The heat exchange fin assemblies include outer fins and inner fins. Water flow openings are opened through the outer fins to facilitate the flow of water in the outer water tank. Multiple groups of vertical grooves are opened at equal intervals on the inner fins. The multiple groups of vertical grooves are used to increase the contact area between the inner fins and the cooling water in the built-in water tank, thereby improving heat conduction.

[0008] Preferably, the outer fins and the inner fins are formed in one piece, the outer fins are distributed inside the outer water tank, and the inner fins are distributed inside the built-in water tank.

[0009] Preferably, a top is fixedly mounted on the upper end of the outer water tank, and a pipeline connection port is provided on the top.

[0010] Preferably, the plurality of groups of heat exchange fin assemblies are distributed in a circular array with the center of the built-in water tank as the center.

[0011] Preferably, the built-in water tank and the outer water tank are coaxially arranged.

[0012] Beneficial effects

[0013] The utility model provides a waste heat recovery heating mechanism for low-concentration gas power generation.

[0014] Beneficial effects:

[0015] (1) This waste heat recovery and heating mechanism for low-concentration gas power generation effectively improves the heat conduction efficiency by utilizing multiple sets of heat exchange fin assemblies between the built-in water tank and the outer water tank and optimizing the heat exchange process. The cooling water inside the built-in water tank absorbs the heat generated after the low-concentration gas power generation, and transfers the heat to the outer fins through the inner fins. The outer fins then transfer the heat to the water source circulating in the outer water tank. After the water source in the outer water tank absorbs the heat, it is converted into hot water for heating or other purposes. The design of increasing the heat contact area through the fin assembly effectively enhances the heat transfer and improves the overall heat recovery efficiency.

[0016] (2) In this waste heat recovery and heating mechanism for low-concentration gas power generation, after the cooling water completes heat absorption and conduction in the built-in water tank, it is discharged through the second drain pipe and enters the circulation system, which facilitates the continued waste heat recovery, thereby ensuring that the waste heat after low-concentration gas power generation can continuously flow back into the system, avoiding the waste of heat energy, and being able to repeatedly use this waste heat to provide hot water or heating for factories, office buildings, etc., thereby achieving the purpose of energy saving. By setting up multiple sets of vertical troughs and water flow ports, the fluidity of the water flow and the efficiency of heat transfer are also improved, making the entire system more efficient and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation or description of the prior art.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is a top plan view of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat exchange fin assembly of the utility model.

[0021] Legend:

[0022] 1. Outer water tank; 2. Internal water tank; 3. Hot water inlet pipe; 4. Drain pipe; 5. Top; 50. Pipe connection port; 6. Water supply pipe; 7. Second drain pipe; 8. Heat exchange fin assembly; 800. Outer fin; 801. Inner fin; 802. Water flow port; 803. Vertical slot.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Embodiment: A waste heat recovery heating mechanism for low-concentration gas power generation, such as Figure 1-Figure 3 As shown, it includes an outer water tank 1 and an inner water tank 2. The inner water tank 2 is fixedly installed inside the outer water tank 1. The inner water tank 2 and the outer water tank 1 are coaxially arranged. A top 5 is fixedly installed on the upper end of the outer water tank 1. A pipe connection port 50 is provided on the top 5. A hot water inlet pipe 3 and a drain pipe 4 are respectively provided on the outer side of the outer water tank 1. External water is introduced into the outer water tank 1 through the hot water inlet pipe 3 and then discharged through the drain pipe 4. A water delivery pipe 6 is provided on the top surface of the inner water tank 2. The free end of the water delivery pipe 6 extends outward through the pipe connection port 50. A second drain pipe 7 is fixedly installed on the bottom surface of the inner water tank 2. The free end of the second drain pipe 7 extends outward through the bottom surface of the outer water tank 1;

[0026] Furthermore, the waste heat after low-concentration gas power generation is transferred to the cooling water through the heat exchanger. After absorbing the heat, the cooling water is introduced into the interior of the built-in water tank 2 through the water pipe 6. The cooling water with high heat transfers the heat inside the built-in water tank 2 and is finally discharged through the second drain pipe 7 and enters the circulation system to facilitate the continued recovery of waste heat after power generation.

[0027] Among them, multiple groups of heat exchange fin assemblies 8 are arranged between the outer water tank 1 and the built-in water tank 2. The multiple groups of heat exchange fin assemblies 8 are distributed in a circular array with the center of the built-in water tank 2 as the center. The heat exchange fin assembly 8 includes outer fins 800 and inner fins 801. The outer fins 800 and the inner fins 801 are formed as one piece. The outer fins 800 are distributed inside the outer water tank 1, and the inner fins 801 are distributed inside the built-in water tank 2. The heat of the cooling water in the built-in water tank 2 is absorbed by the inner fins 801, and the heat is transferred to the inner fins. 801 is conducted to the outer fin 800, and there is a water source circulating in the outer water tank 1. After the water source absorbs the heat conducted by the outer fin 800, it becomes hot water for convenient supply to factories, office buildings, etc. A water flow opening 802 is opened through the outer fin 800, and the water flow opening 802 is convenient for water flow to be guided in the outer water tank 1. A plurality of groups of vertical grooves 803 are equidistantly opened on the inner fin 801, and the plurality of groups of vertical grooves 803 are opened to increase the contact area between the inner fin 801 and the cooling water in the built-in water tank 2, thereby improving heat conduction.

[0028] The technical means disclosed in the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A waste heat recovery heating mechanism for low-concentration gas power generation, comprising an outer water tank (1) and an inner water tank (2), wherein the inner water tank (2) is fixedly mounted inside the outer water tank (1), and is characterized in that: The outer side surface of the outer water tank (1) is respectively provided with a hot water inlet pipe (3) and a drain pipe (4); the top surface of the built-in water tank (2) is provided with a water delivery pipe (6); the bottom surface of the built-in water tank (2) is fixedly mounted with a second drain pipe (7); the free end of the second drain pipe (7) passes through the bottom surface of the outer water tank (1) and extends outward; A plurality of heat exchange fin assemblies (8) are provided between the outer water tank (1) and the inner water tank (2), the heat exchange fin assemblies (8) comprising outer fins (800) and inner fins (801), the outer fins (800) being provided with water flow openings (802) extending therethrough, and the inner fins (801) being provided with a plurality of vertical slots (803) at equal intervals.

2. The waste heat recovery heating mechanism for low-concentration gas power generation according to claim 1, characterized in that: The outer fins (800) and the inner fins (801) are integrally formed, the outer fins (800) are distributed inside the outer water tank (1), and the inner fins (801) are distributed inside the built-in water tank (2).

3. The waste heat recovery heating mechanism for low-concentration gas power generation according to claim 1, characterized in that: A top portion (5) is fixedly mounted on the upper end of the outer water tank (1), and a pipeline connection port (50) is provided on the top portion (5).

4. The waste heat recovery heating mechanism for low-concentration gas power generation according to claim 1, characterized in that: The plurality of groups of heat exchange fin assemblies (8) are distributed in a circular array with the center of the built-in water tank (2) as the center.

5. The waste heat recovery and heating mechanism for low-concentration gas power generation according to claim 1, characterized in that: The built-in water tank (2) and the outer water tank (1) are coaxially arranged.

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