Regenerative device of cogeneration unit

Abstract

The utility model provides a heat regeneration device of a cogeneration unit, which comprises a heat regeneration box, a water pipe is arranged in the heat regeneration box, a bottom plate is fixed at the bottom of the heat regeneration box through bolts, a smoke inlet is fixed in the bottom plate, a smoke guide plate is arranged on the smoke inlet, and a smoke outlet is fixed at the top of the heat regeneration box. A first filter plate, a first smoke barrier and a second smoke barrier are arranged at the top in the heat return box, and an air flue is arranged between the first smoke barrier and the second smoke barrier. According to the utility model, the smoke inlet is formed in the bottom plate, and the smoke outlet is formed in the top of the heat return box, so that waste gas can be directly introduced into the heat return box, and soot is collected in the heat return box, so that the temperature in the heat return box is increased, water in the water pipe can be heated, and the waste of heat is reduced; and meanwhile, heat of the cigarette ash can be recycled while the cigarette ash is collected, a first filter plate, a first smoke baffle and a second smoke baffle are installed in the heat return box, waste gas can be filtered, and the cigarette ash is prevented from being directly introduced into air.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery devices, in particular to a heat recovery device for a cogeneration unit. Background Art

[0002] Cogeneration, also known as combined heat and power supply. Cogeneration can greatly improve the thermal efficiency of thermal power plants. In order to reduce energy loss, it is usually necessary to recover the heat of the flue gas generated by cogeneration. For example, the patent with publication number CN213711132U discloses a heating device for the heat recovery system of a cogeneration unit, including a placement plate, a box body and a water tank are fixedly installed on the top of the placement plate, one side of the box body is fixedly connected to one end of a heat conduction pipe, the heat conduction pipe is coiled on the inner wall of the water tank, a rotating rod is rotatably installed on the water tank, and a plurality of stirring blades are fixedly installed on the outer side of the rotating rod. The outer fixed sleeve of the rotating rod is provided with a gear, and a rack is meshed on the gear. A connecting plate is fixedly installed on one side of the rack, and one end of a striking rod is fixedly installed on one side of the connecting plate. A filter is fixedly installed in the box, and the other end of the striking rod is in contact with the filter. The device can recycle the heat in the exhaust gas and has a simple structure and is easy to use. The device blocks the ash through the filter. Although it can collect the ash, the ash itself carries a part of heat. Directly collecting the ash will cause the part of the heat to be lost.

[0003] To this end, the utility model provides a heat recovery device for a cogeneration unit. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a heat recovery device for a cogeneration unit to solve the problems raised in the above-mentioned background technology. The utility model can collect the soot and recover the heat of the soot at the same time; and can filter the exhaust gas to prevent the soot from being directly introduced into the air, thereby facilitating the recovery of the heat of the exhaust gas.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a heat recovery device for a cogeneration unit, including a heat recovery box, a water pipe is installed in the heat recovery box, a bottom plate is fixed to the bottom of the heat recovery box by bolts, a smoke inlet is fixed in the bottom plate, a smoke guide plate is installed on the smoke inlet, a smoke outlet is fixed on the top of the heat recovery box, a first filter plate, a first smoke baffle and a second smoke baffle are installed on the top of the heat recovery box, and an air duct is provided between the first smoke baffle and the second smoke baffle.

[0006] Furthermore, through grooves are provided on both sides of the reheat box, and the water pipe includes a water inlet end, a water outlet end and a heating part, and the water inlet end and the water outlet end correspond to the two through grooves respectively.

[0007] Furthermore, the heating part is located in the heat recovery box, and the heating part is a spiral structure.

[0008] Furthermore, the smoke guide plate is fixedly connected to the smoke inlet, the smoke guide plate is located in the heat recovery box, and the smoke guide plate is an arc-shaped plate.

[0009] Furthermore, the first filter plate is located on the upper side of the water pipe, the first smoke baffle is located above the first filter plate, the second smoke baffle is located above the first smoke baffle, the first filter plate and the first smoke baffle are both fixedly connected to the heat recovery box, the second smoke baffle is fixedly connected to the smoke outlet, and a gap is provided between the second smoke baffle and the smoke outlet.

[0010] Furthermore, a second filter plate is fixed in the smoke outlet.

[0011] Beneficial effects of the utility model: The utility model provides a heat recovery device for a cogeneration unit, comprising a bottom plate; a smoke inlet; a heat recovery box; a smoke outlet; a water pipe; a first filter plate; a first smoke baffle; and a second smoke baffle.

[0012] A smoke inlet is installed in the bottom plate, and a smoke outlet is installed on the top of the heat recovery box, so that the exhaust gas can be directly introduced into the heat recovery box, so that the smoke ash is collected in the heat recovery box, thereby increasing the temperature in the heat recovery box, and heating the water in the water pipe to reduce heat waste. At the same time, the heat of the smoke ash can be recovered while the smoke ash is collected. A first filter plate, a first smoke baffle and a second smoke baffle are installed in the heat recovery box to filter the exhaust gas, prevent the smoke ash from being directly introduced into the air, and ensure that the exhaust gas remains in the heat recovery box for as long as possible, thereby facilitating the recovery of the heat of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall assembly three-dimensional structure of a heat recovery device for a cogeneration unit of the utility model;

[0014] Figure 2 It is a schematic diagram of the assembly three-dimensional structure of a heat recovery box and a water pipe in a heat recovery device of a cogeneration unit of the utility model;

[0015] Figure 3 This is a schematic diagram of the overall assembly cross-sectional structure of a heat recovery device for a combined heat and power unit according to the utility model;

[0016] In the figure: 1. heat recovery box; 2. water pipe; 201. water inlet; 202. water outlet; 203. heating part; 3. smoke inlet; 4. smoke outlet; 5. smoke guide plate; 6. first filter plate; 7. second filter plate; 8. first smoke baffle plate; 9. second smoke baffle plate; 10. bottom plate; 11. air duct. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] See also Figures 1 to 3 The utility model provides a technical solution: a heat recovery device for a cogeneration unit, comprising a heat recovery box 1, a water pipe 2 is installed in the heat recovery box 1, a bottom plate 10 is fixed to the bottom of the heat recovery box 1 by bolts, a smoke inlet 3 is fixed in the bottom plate 10, a smoke inlet 3 is installed on the smoke inlet 3, a smoke guide plate 5 is installed on the smoke inlet 3, a smoke outlet 4 is fixed to the top of the heat recovery box 1, a first filter plate 6, a first smoke baffle 8 and a second smoke baffle 9 are installed on the top of the heat recovery box 1, and an air duct 11 is provided between the first smoke baffle 8 and the second smoke baffle 9.

[0019] In this embodiment, through grooves are provided on both sides of the heat recovery box 1, and the water pipe 2 includes a water inlet end 201, a water outlet end 202 and a heating part 203. The water inlet end 201 and the water outlet end 202 correspond to the two through grooves respectively. The heating part 203 is located in the heat recovery box 1, and the heating part 203 is a spiral structure.

[0020] Specifically, when heat is recovered, the smoke inlet 3 is connected to the flue of the cogeneration unit, so that the exhaust gas generated by the cogeneration unit enters the heat recovery box 1 with a part of the ash through the smoke inlet 3, so that the heat recovery box 1 is heated by the exhaust gas and the ash, and water is introduced through the water inlet end 201, so that the water flows into the heating part 203, and the water can be heated by the heat of the exhaust gas and the ash, so that the heat of the exhaust gas and the ash can be recovered.

[0021] The smoke guide plate 5 is fixedly connected to the smoke inlet 3, the smoke guide plate 5 is located in the heat recovery box 1, the smoke guide plate 5 is an arc-shaped plate, the first filter plate 6 is located on the upper side of the water pipe 2, the first smoke baffle 8 is located above the first filter plate 6, the second smoke baffle 9 is located above the first smoke baffle 8, the first filter plate 6 and the first smoke baffle 8 are both fixedly connected to the heat recovery box 1, the second smoke baffle 9 is fixedly connected to the smoke outlet 4, a gap is provided between the second smoke baffle 9 and the smoke outlet 4, and a second filter plate 7 is fixed in the smoke outlet 4.

[0022] Specifically, when the exhaust gas is introduced into the heat recovery box 1, the smoke guide plate 5 can guide the exhaust gas so that the exhaust gas fills the heat recovery box 1, and then the exhaust gas flows upward, heats the water pipe 2 and is filtered by the first filter plate 6, so that most of the smoke is filtered out, and then the exhaust gas enters the air duct 11 between the first smoke baffle 8 and the second smoke baffle 9, which can extend the time the exhaust gas stays in the heat recovery box 1 as much as possible, so as to better recover the heat of the exhaust gas, and then the exhaust gas enters the smoke outlet 4, and can be discharged from the smoke outlet 4 after being filtered by the second filter plate 7, thereby completing the recovery of the exhaust gas heat.

[0023] The bolts between the regenerator 1 and the bottom plate 10 can be removed regularly, so that the bottom plate 10 can be removed to facilitate cleaning of the collected ash.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat recovery device for a combined heat and power unit, comprising a heat recovery box (1), characterized in that: The reheat box (1) is provided with a water pipe (2), the bottom of the reheat box (1) is fixed with a bottom plate (10) by bolts, a smoke inlet (3) is fixed in the bottom plate (10), a smoke guide plate (5) is installed on the smoke inlet (3), a smoke outlet (4) is fixed at the top of the reheat box (1), a first filter plate (6), a first smoke baffle (8) and a second smoke baffle (9) are installed at the top of the reheat box (1), and an air duct (11) is provided between the first smoke baffle (8) and the second smoke baffle (9).

2. A heat recovery device for a combined heat and power unit according to claim 1, characterized in that: Through grooves are provided on both sides of the reheat box (1); the water pipe (2) comprises a water inlet end (201), a water outlet end (202) and a heating portion (203); the water inlet end (201) and the water outlet end (202) respectively correspond to the two through grooves.

3. A heat recovery device for a combined heat and power unit according to claim 2, characterized in that: The heating part (203) is located in the reheat box (1), and the heating part (203) is a spiral structure.

4. A heat recovery device for a combined heat and power unit according to claim 1, characterized in that: The smoke guide plate (5) is fixedly connected to the smoke inlet (3); the smoke guide plate (5) is located in the heat recovery box (1); and the smoke guide plate (5) is an arc-shaped plate.

5. The heat recovery device for a combined heat and power unit according to claim 1, characterized in that: The first filter plate (6) is located on the upper side of the water pipe (2), the first smoke baffle (8) is located above the first filter plate (6), the second smoke baffle (9) is located above the first smoke baffle (8), the first filter plate (6) and the first smoke baffle (8) are both fixedly connected to the heat recovery box (1), the second smoke baffle (9) is fixedly connected to the smoke outlet (4), and a gap is provided between the second smoke baffle (9) and the smoke outlet (4).

6. The heat recovery device for a combined heat and power unit according to claim 1, characterized in that: A second filter plate (7) is fixed inside the smoke outlet (4).

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