Boiler waste heat recovery device

Abstract

The utility model provides a boiler waste heat recovery device which comprises a main tank body, a heat exchange chamber is arranged on the inner side of the main tank body, baffles are installed on the upper side and the lower side of the heat exchange chamber, the outer sides of the two baffles are fixedly connected with the inner side of the main tank body, a plurality of sets of through holes are correspondingly formed in the two baffles, and the through holes are communicated with the main tank body. Heat exchange pipes are jointly and fixedly installed among the multiple sets of vertically-corresponding through holes, a water inlet pipe is connected to one side of the heat exchange cavity in a penetrating mode, and a water outlet pipe is connected to the other side of the heat exchange cavity in a penetrating mode. Through the cooperation of the air inlet and the main tank body, waste heat generated by the boiler can be guided into the main tank body, through the cooperation of the baffle and the heat exchange pipe, high-temperature flue gas can pass through the heat exchange cavity and exchange heat with water in the heat exchange cavity, waste heat recycling is facilitated, the structure is simple, the integration degree is high, the occupied space is reduced, and the energy-saving and environment-friendly effects are achieved. And the production cost of the product is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, and more specifically, particularly relates to a boiler waste heat recovery device. Background Art

[0002] The exhaust gas discharged by the boiler contains a large amount of heat. Discharging it into the atmosphere will cause energy loss. In order to avoid energy waste, waste heat recovery technology is currently used to recover the heat in the boiler exhaust gas to improve energy utilization.

[0003] The existing waste heat recovery device has a low integration degree, resulting in a large space occupation, and the structure of the existing waste heat recovery device is relatively complex, and the production cost is high, which imposes a high cost burden on some small-scale boiler users. Therefore, in view of this, the existing structure and defects are studied and improved, and a boiler waste heat recovery device is provided. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a boiler waste heat recovery device, which is achieved by the following specific technical means:

[0005] A boiler waste heat recovery device comprises a main tank body, wherein a heat exchange chamber is arranged on the inner side of the main tank body, baffles are installed on the upper and lower sides of the heat exchange chamber, the outer sides of two groups of baffles are fixedly connected to the inner side of the main tank body, multiple groups of through holes are correspondingly arranged on the two groups of baffles, heat exchange tubes are fixedly installed between the multiple groups of corresponding upper and lower through holes, a water inlet pipe is connected through one side of the heat exchange chamber, and a water outlet pipe is connected through the other side of the heat exchange chamber.

[0006] Furthermore, the outer diameter of the baffle is equal to the inner diameter of the main tank body, and the main tank body is provided with an air inlet cavity and an air outlet cavity on the top side of the heat exchange chamber, and the air inlet cavity and the air outlet cavity are respectively connected with an air inlet and an air outlet, and the main tank body is provided with a desulfurization chamber on the bottom side of the heat exchange chamber; a partition is installed between the air inlet cavity and the air outlet cavity, the outer side of the partition is fixedly and sealedly connected to the inner wall of the main tank body, and the bottom side of the partition is fixedly connected to the top side of the baffle located on the top side.

[0007] Furthermore, a water inlet is provided on the bottom side of the main tank body, and a liquid storage pan is fixedly installed on the bottom side of the main tank body. Desulfurizer solution is stored inside the liquid storage pan, and the top level of the liquid storage pan is higher than the top level of the water inlet.

[0008] Furthermore, control valves are installed on the inner sides of the water inlet pipe and the water outlet pipe.

[0009] Furthermore, an air inlet is provided on one side of the top of the main tank body, and a connecting flange that can be used to connect an air pump is fixedly installed on one side of the air inlet. The air inlet is through-connected with both the air inlet cavity and the air outlet cavity, and the top sides of the air inlet cavity and the air outlet cavity are through-connected with ash removal ports.

[0010] Furthermore, a mounting frame is fixedly installed on one side of the main tank body, a driving motor is fixedly installed on the top side of the mounting frame, the driving motor is connected to an exhaust fan through a driving wheel, a driven wheel and a transmission belt, the bottom side of the exhaust fan is fixedly installed on the top side of the mounting frame, and one side of the exhaust fan is connected to one end of the air outlet.

[0011] Furthermore, one end of the water inlet pipe is connected to a pump, and the bottom side of the pump is fixedly mounted on one side of the mounting frame.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model can introduce the waste heat generated by the boiler into the main tank body through the cooperation of the air inlet and the main tank body. Through the cooperation of the baffle and the heat exchange tube, the high-temperature flue gas can pass through the heat exchange chamber and exchange heat with the water in the heat exchange chamber, which is convenient for recycling the waste heat. The utility model has a simple structure, high integration, small space occupation, and reduces the production cost of the product.

[0014] The utility model can blow gas into the air inlet cavity and the air outlet cavity through the cooperation of the connecting flange and the air pump, and can blow away pollutants such as coal ash brought into the air inlet cavity and the air outlet cavity by the cooperation of the ash removal port and the main tank body, which is conducive to rapid ash cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 .

[0017] Figure 3 It is a schematic diagram of the structure of the baffle, partition and heat exchange tube of the utility model.

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0019] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0020] 1. Main tank body; 2. Air inlet; 3. Air outlet; 4. Baffle; 5. Heat exchange tube; 6. Water inlet pipe; 7. Water outlet pipe; 8. Partition; 9. Connecting flange; 10. Ash outlet; 11. Pump; 12. Mounting frame; 13. Drive motor; 14. Exhaust fan; 15. Liquid storage tray. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example

[0025] As attached Figure 1 To Attachment Figure 4 As shown:

[0026] The utility model provides a boiler waste heat recovery device, comprising a main tank body 1, wherein a heat exchange chamber is arranged on the inner side of the main tank body 1, baffles 4 are installed on both upper and lower sides of the heat exchange chamber, outer sides of two groups of baffles 4 are fixedly connected to the inner side of the main tank body 1, multiple groups of through holes are correspondingly arranged on the two groups of baffles 4, heat exchange tubes 5 are commonly fixedly installed between the multiple groups of upper and lower corresponding through holes, a water inlet pipe 6 is through-connected to one side of the heat exchange chamber, and a water outlet pipe 7 is through-connected to the other side of the heat exchange chamber, the structure is simple, and rapid heat exchange can be achieved.

[0027] Among them, the outer diameter of the baffle 4 is equal to the inner diameter of the main tank body 1, and the main tank body 1 is provided with an air inlet cavity and an air outlet cavity on the top side of the heat exchange chamber, and the air inlet cavity and the air outlet cavity are respectively connected with an air inlet 2 and an air outlet 3, and a desulfurization chamber is provided on the bottom side of the heat exchange chamber in the main tank body 1; a partition 8 is installed between the air inlet cavity and the air outlet cavity, and the outer side of the partition 8 is fixedly and sealedly connected to the inner wall of the main tank body 1, and the bottom side of the partition 8 is fixedly connected to the top side of the baffle 4 located on the top side, which is convenient for the intake and exhaust of high-temperature flue gas, and the water in the heat exchange chamber is heated twice, thereby increasing the heat exchange efficiency.

[0028] Among them, a water inlet is provided on the bottom side of the main tank body 1, and a liquid storage pan 15 is fixedly installed on the bottom side of the main tank body 1. The desulfurizer solution is stored inside the liquid storage pan 15, and the top horizontal height of the liquid storage pan 15 is higher than the horizontal height of the top of the water inlet, so that when in use, the desulfurizer solution can be stored in the liquid storage pan 15, and the liquid level of the desulfurizer solution is made higher than the top height of the water inlet to prevent flue gas from overflowing. At the same time, through the stored desulfurizer solution, a certain degree of desulfurization and dust removal operations can be carried out when the flue gas flows through its liquid surface.

[0029] Wherein, control valves are installed on the inner sides of the water inlet pipe 6 and the water outlet pipe 7, so as to facilitate the operator to control the inflow and outflow of water in the heat exchange chamber.

[0030] Among them, an air inlet is provided on one side of the top of the main tank body 1, and a connecting flange 9 that can be used to connect an air pump is fixedly installed on one side of the air inlet. The air inlet is through-connected with both the air inlet cavity and the air outlet cavity. The top sides of the air inlet cavity and the air outlet cavity are through-connected with an ash removal port 10, which can realize the blowing away of pollutants such as coal ash brought into the air inlet cavity and the air outlet cavity by high-temperature flue gas, so as to facilitate the later cleaning operation from the ash removal port 10.

[0031] Among them, a mounting frame 12 is fixedly installed on one side of the main tank body 1, and a driving motor 13 is fixedly installed on the top side of the mounting frame 12. The driving motor 13 is connected to an exhaust fan 14 through a driving wheel, a driven wheel and a transmission belt. The bottom side of the exhaust fan 14 is fixedly installed on the top side of the mounting frame 12, and one side of the exhaust fan 14 is connected to one end of the air outlet 3, which can drive the rapid flow of residual heat in the main tank body 1 and discharge it out of the main tank body 1.

[0032] One end of the water inlet pipe 6 is connected to a pump 11, and the bottom side of the pump 11 is fixedly mounted on one side of a mounting frame 12, so as to facilitate rapid introduction of water into the heat exchange chamber.

[0033] The working principle of this embodiment is as follows: when it is necessary to recover the waste heat of the boiler, the electrical components such as the driving motor 13, the exhaust fan 14, the air pump and the pump 11 in the product are connected to an external power supply and a control unit, and then the connecting flange 9 and the ash removal port 10 are sealed to prevent smoke from overflowing; then water is introduced into the heat exchange chamber through the pump 11 and the water inlet pipe 6, and the high-temperature flue gas is introduced into the air inlet chamber from the air inlet 2. The waste heat passes through the heat exchange chamber from the heat exchange tube 5 and heats the water in the heat exchange chamber. After passing through the heat exchange tube 5, the high-temperature flue gas passes through the desulfurization chamber and re-enters the heat exchange tube 5 on the other side, and the water in the heat exchange chamber is heated for the second time, and then enters the air outlet chamber, and then is discharged from the air outlet 3. The water after the heat exchange is collected through the water outlet pipe 7 to complete the recovery of the waste heat of the boiler.

[0034] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A boiler waste heat recovery device, comprising a main tank body (1), wherein a heat exchange chamber is provided inside the main tank body (1), characterized in that: Baffles (4) are installed on both upper and lower sides of the heat exchange chamber, and the outer sides of the two groups of baffles (4) are fixedly connected to the inner side of the main tank body (1). The two groups of baffles (4) are correspondingly provided with multiple groups of through holes, and heat exchange tubes (5) are fixedly installed between the multiple groups of upper and lower corresponding through holes. One side of the heat exchange chamber is connected to a water inlet pipe (6), and the other side of the heat exchange chamber is connected to a water outlet pipe (7). An air inlet is provided on one side of the top of the main tank body (1), and a connecting flange (9) that can be used to connect to an air pump is fixedly installed on one side of the air inlet. The air inlet is connected to both the air inlet cavity and the air outlet cavity, and the top sides of the air inlet cavity and the air outlet cavity are connected to a ash removal port (10).

2. The boiler waste heat recovery device according to claim 1, characterized in that: The outer diameter of the baffle (4) is equal to the inner diameter of the main tank body (1); the main tank body (1) is provided with an air inlet cavity and an air outlet cavity on the top side of the heat exchange chamber; the air inlet cavity and the air outlet cavity are respectively connected with an air inlet (2) and an air outlet (3); a desulfurization chamber is provided on the bottom side of the heat exchange chamber in the main tank body (1); a partition (8) is installed between the air inlet cavity and the air outlet cavity; the outer side of the partition (8) is fixedly and sealedly connected to the inner wall of the main tank body (1), and the bottom side of the partition (8) is fixedly connected to the top side of the baffle (4) located on the top side.

3. The boiler waste heat recovery device according to claim 1, characterized in that: A water inlet is provided on the bottom side of the main tank body (1), and a liquid storage pan (15) is fixedly mounted on the bottom side of the main tank body (1). Desulfurizing agent solution is stored inside the liquid storage pan (15), and the top level of the liquid storage pan (15) is higher than the top level of the water inlet.

4. The boiler waste heat recovery device according to claim 1, characterized in that: Control valves are installed on the inner sides of the water inlet pipe (6) and the water outlet pipe (7).

5. The boiler waste heat recovery device according to claim 1, characterized in that: A mounting frame (12) is fixedly mounted on one side of the main tank body (1), a driving motor (13) is fixedly mounted on the top side of the mounting frame (12), the driving motor (13) is connected to an exhaust fan (14) via a driving wheel, a driven wheel and a transmission belt, the bottom side of the exhaust fan (14) is fixedly mounted on the top side of the mounting frame (12), and one side of the exhaust fan (14) is in communication with one end of the air outlet (3).

6. The boiler waste heat recovery device according to claim 1, characterized in that: One end of the water inlet pipe (6) is connected to a pump (11), and the bottom side of the pump (11) is fixedly mounted on one side of a mounting frame (12).

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