Gas boiler flue gas heat energy recovery device

Abstract

The utility model relates to the technical field of heat energy recovery, in particular to a gas boiler flue gas heat energy recovery device. The utility model provides a gas boiler flue gas heat energy recovery device which is small, exquisite, rapid, convenient to install and maintain and capable of improving flue gas recovery efficiency and reducing energy waste. A gas boiler flue gas heat energy recovery device comprises a first connecting pipe, baffles, a second connecting pipe and the like, the upper baffle and the lower baffle are connected to the first connecting pipe, and the second connecting pipe is connected to the upper side of the first connecting pipe in a sliding mode. Smoke is buffered through the baffle, the smoke exhaust port and the smoke outlet are additionally arranged, waste heat in the smoke is fully absorbed, the device can be rapidly disassembled and replaced by disassembling bolts on the first connecting pipe and the second connecting pipe and enabling the second connecting pipe to move downwards, and the effects of being small, exquisite, rapid, convenient to use and low in cost are achieved. And moreover, the flue gas recovery efficiency can be improved, and the effect of reducing energy waste can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery, in particular to a gas boiler flue gas heat recovery device. Background Art

[0002] As a common thermal energy equipment, gas boilers are widely used in industrial production and residents' lives. However, during the operation of gas boilers, a large amount of flue gas emissions not only causes energy waste, but also has a certain impact on the environment. In order to solve this problem, gas boiler flue gas heat recovery devices came into being.

[0003] At present, although the flue gas heat recovery devices of gas boilers on the market can recover some heat energy, there are still some problems. First, traditional recovery devices are often bulky, difficult to install and maintain, and not conducive to promotion and application in limited space. Secondly, the energy recovery efficiency of some recovery devices is not high, and the heat energy in the flue gas cannot be fully utilized. In addition, some devices still face challenges in material selection and heat exchange efficiency when dealing with high-temperature flue gas.

[0004] Therefore, a gas boiler flue gas heat recovery device has been developed which is compact, quick, easy to install and maintain, and can improve the flue gas recovery efficiency and reduce energy waste. Utility Model Content

[0005] In order to overcome the shortcomings of existing gas boiler flue gas heat energy recovery devices, which are bulky, difficult to install and maintain, have low energy recovery efficiency, and cannot fully utilize the heat energy in the flue gas, the utility model provides a gas boiler flue gas heat energy recovery device which is small and fast, easy to install and maintain, and can improve the flue gas recovery efficiency and reduce energy waste.

[0006] The technical solution is: a gas boiler flue gas heat energy recovery device, including a first connecting pipe, a baffle, a second connecting pipe, a guide column, a spring, a shell, heat-absorbing fins and a water inlet assembly, the first connecting pipe is connected to an upper and lower baffle, the second connecting pipe is slidably connected to the upper side of the first connecting pipe, a plurality of guide columns are connected to the upper part of the first connecting pipe, the guide columns are all slidably connected to the second connecting pipe, springs are connected between the guide columns and the second connecting pipe, heat-absorbing fins are connected between the shell and the first connecting pipe, a connecting water pipe passes through the heat-absorbing fins, and a water inlet assembly capable of heat recovery is provided on the shell.

[0007] Furthermore, the water inlet assembly includes a water inlet pipe, a connecting water pipe and a drain pipe. The outer side of the first connecting pipe is connected to the outer shell, the left side of the upper part of the shell is connected to the water inlet pipe, the left side of the lower part of the shell is connected to the drain pipe, a connecting water pipe is connected between the drain pipe and the water inlet pipe, and the connecting water pipe is located between the outer shell and the first connecting pipe.

[0008] Furthermore, flanges are provided on the first connecting pipe and the second connecting pipe.

[0009] Furthermore, the baffles are distributed alternately up and down in the first connecting pipe.

[0010] Furthermore, a plurality of smoke exhaust ports are opened at the left portion of the first connecting pipe, a plurality of smoke outlets are opened at the right portion of the first connecting pipe, and the number of the smoke exhaust ports is greater than the number of the smoke outlets.

[0011] Furthermore, the connecting water pipes are distributed reciprocatingly and zigzagly along the circumference of the first connecting pipe.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model buffers the smoke through the baffle, and then increases the design of the smoke exhaust port and the smoke outlet, so that the waste heat in the smoke is fully absorbed, and by removing the bolts on the first connecting pipe and the second connecting pipe, and then moving the second connecting pipe downward, the device can be quickly disassembled and replaced, making it compact and fast, easy to install and maintain, and can improve the smoke recovery efficiency and reduce energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a three-dimensional structural cutaway diagram of the utility model.

[0015] Figure 3 This is a partial three-dimensional structural sectional view of the first type of the utility model.

[0016] Figure 4 This is a schematic diagram of a second partial three-dimensional structure of the utility model.

[0017] Figure numbers: 1. second connecting pipe, 2. baffle, 3. first connecting pipe, 4. guide column, 5. spring, 6. shell, 7. water inlet pipe, 8. connecting water pipe, 9. drain pipe, 10. heat absorbing fin. DETAILED DESCRIPTION

[0018] Although the present invention may be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as: above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as: first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0019] A gas boiler flue gas heat recovery device, such as Figure 1-Figure 4As shown, it includes a first connecting pipe 3, a baffle 2, a second connecting pipe 1, a guide column 4, a spring 5, a shell 6, a heat absorbing fin 10 and a water inlet assembly. The first connecting pipe 3 is connected to two upper and lower baffles 2. The second connecting pipe 1 is slidably connected to the upper side of the first connecting pipe 3. Sixteen guide columns 4 are connected to the upper part of the first connecting pipe 3. The guide columns 4 are all slidably connected to the second connecting pipe 1. Springs 5 ​​are connected between the guide columns 4 and the second connecting pipe 1. Heat absorbing fins 10 are connected between the shell 6 and the first connecting pipe 3. The connecting water pipe 8 passes through the heat absorbing fins 10. The shell 6 is provided with a water inlet assembly.

[0020] like Figure 1 , Figure 2 and Figure 4 As shown, the water inlet assembly includes an inlet pipe 7, a connecting water pipe 8 and a drain pipe 9. The outer side of the first connecting pipe 3 is connected to the outer shell 6, the upper left side of the outer shell 6 is connected to the inlet pipe 7, the lower left side of the outer shell 6 is connected to the drain pipe 9, the connecting water pipe 8 is connected between the drain pipe 9 and the inlet pipe 7, and the connecting water pipe 8 is located between the outer shell 6 and the first connecting pipe 3. Flanges are provided on the first connecting pipe 3 and the second connecting pipe 1 for easy docking to the exhaust pipe of the gas boiler. The baffles 2 are staggered up and down in the first connecting pipe 3, which can effectively buffer the flue gas and reduce the flow rate of the flue gas. Low, increasing the heat exchange time of the flue gas, which is helpful to fully absorb the waste heat in the flue gas. Twelve smoke exhaust ports are opened on the left part of the first connecting pipe 3, and six smoke outlets are opened on the right part of the first connecting pipe 3, and the number of smoke exhaust ports is greater than the number of smoke outlets, so that the smoke exhaust speed of the smoke is reduced, thereby increasing the residence time of the smoke between the first connecting pipe 3 and the shell 6, so that the waste heat in the smoke is fully absorbed by the heat exchanger. The connecting water pipe 8 is distributed reciprocatingly and tortuously along the circumference of the first connecting pipe 3, which increases the contact area between the connecting water pipe 8 and the heat exchanger, and improves the waste heat recovery efficiency of the flue gas.

[0021] When using the device, first press the second connecting pipe 1 downward on the guide column 4 to squeeze and shrink the spring 5, then move the first connecting pipe 3 and the second connecting pipe 1 to the smoke exhaust pipe of the gas boiler, and then make the spring 5 rebound to move the second connecting pipe 1 upward, so that the first connecting pipe 3 and the second connecting pipe 1 are docked to the smoke exhaust pipe, and the first connecting pipe 3 and the second connecting pipe 1 are fixed by bolts and flanges on the first connecting pipe 3 and the second connecting pipe 1. Then, the gas boiler is put into operation. The smoke generated during the operation of the gas boiler enters the first connecting pipe 3 through the smoke exhaust pipe, and the smoke is buffered by the baffle 2 on the first connecting pipe 3. The smoke after being buffered by the baffle 2 enters the gap between the shell 6 and the first connecting pipe 3 from the smoke exhaust port, and fully contacts the heat absorbing fins 10, so that the heat absorbing fins 10 absorb the residual heat in the smoke. When the hot fins 10 absorb the waste heat in the flue gas, water flows into the connecting pipe from the water inlet pipe 7, so that the heat-absorbing fins 10 transfer heat to the water flow in the connecting pipe. The water flow after absorbing the heat is discharged and collected from the drain pipe 9 to facilitate heat recovery. The flue gas after the waste heat is absorbed flows into the first connecting pipe 3 from the smoke outlet, and then is discharged from the second connecting pipe 1 to facilitate further processing of the flue gas. The number of smoke exhaust ports exceeds the number of smoke outlets, thereby increasing the residence time of the smoke between the outer shell 6 of the first connecting pipe 3, so that the waste heat of the smoke is fully absorbed by the heat-absorbing fins 10, thereby improving the waste heat recovery rate in the smoke. When the heat absorption efficiency of the heat-absorbing fins 10 is reduced and the device needs to be replaced, the bolts on the first connecting pipe 3 and the second connecting pipe 1 are removed, and then the second connecting pipe 1 is moved downward, the spring 5 is squeezed and contracted, and the device can be disassembled and replaced.

[0022] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A gas boiler flue gas heat recovery device, characterized in that: The invention comprises a first connecting pipe (3), a baffle (2), a second connecting pipe (1), a guide column (4), a spring (5), a shell (6), a heat absorbing fin (10) and a water inlet assembly. The first connecting pipe (3) is connected to two upper and lower baffles (2). The upper side of the first connecting pipe (3) is slidably connected to the second connecting pipe (1). The upper part of the first connecting pipe (3) is connected to a plurality of guide columns (4). The guide columns (4) are all slidably connected to the second connecting pipe (1). A spring (5) is connected between the guide columns (4) and the second connecting pipe (1). A heat absorbing fin (10) is connected between the shell (6) and the first connecting pipe (3). The connecting water pipe (8) passes through the heat absorbing fin (10). The shell (6) is provided with a water inlet assembly capable of heat recovery.

2. A gas boiler flue gas heat recovery device according to claim 1, characterized in that: The water inlet assembly comprises a water inlet pipe (7), a connecting water pipe (8) and a drain pipe (9); the outer side of the first connecting pipe (3) is connected to the outer shell (6); the upper left side of the outer shell (6) is connected to the water inlet pipe (7); the lower left side of the outer shell (6) is connected to the drain pipe (9); a connecting water pipe (8) is connected between the drain pipe (9) and the water inlet pipe (7); and the connecting water pipe (8) is located between the outer shell (6) and the first connecting pipe (3).

3. A gas boiler flue gas heat recovery device according to claim 1, characterized in that: Flanges are provided on both the first connecting pipe (3) and the second connecting pipe (1).

4. A gas boiler flue gas heat recovery device according to claim 1, characterized in that: The baffles (2) are distributed in an alternating manner up and down in the first connecting pipe (3).

5. The gas boiler flue gas heat recovery device according to claim 1, characterized in that: The left portion of the first connecting pipe (3) is provided with a plurality of smoke exhaust ports, and the right portion of the first connecting pipe (3) is provided with a plurality of smoke outlets, and the number of the smoke exhaust ports is greater than the number of the smoke outlets.

6. A gas boiler flue gas heat recovery device according to claim 1, characterized in that: The connecting water pipe (8) is distributed in a reciprocating and zigzag manner along the circumference of the first connecting pipe (3).

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