High-pressure boiler tail gas heat energy utilization device

Abstract

The utility model provides a high-pressure boiler tail gas heat energy utilization device, and belongs to the technical field of high-pressure boiler tail gas treatment. Comprising a machine box, a tail gas pipe horizontally penetrates through the top of the machine box, horizontal ventilation pipes are symmetrically installed at the two ends of the bottom of the machine box, a spiral air channel surrounding the tail gas pipe is formed in the machine box, and the two ends of the spiral air channel are connected with the two ventilation pipes correspondingly; a detachable fixing frame is arranged in the middle of the interior of the machine box, and a plurality of heating assemblies used for heating the bottom of the spiral air channel are installed on the fixing frame. The high-pressure boiler tail gas waste heat utilization device can be conveniently connected into a tail gas and gas inlet system of a high-pressure boiler, waste heat of the tail gas is used for preheating air or fuel in the gas inlet system, and therefore combustion efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure boiler tail gas treatment, in particular to a high-pressure boiler tail gas heat energy utilization device. Background Art

[0002] High-pressure boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. In industry, the boiler will produce a large amount of tail gas during use. According to relevant statistics, the tail gas temperature of the boilers used in most factories is generally 220℃~230℃, and the thermal efficiency is about 86%~90%.

[0003] At present, the exhaust gas of some high-pressure boilers is directly discharged to the outside through the exhaust pipe, which causes the waste heat in the exhaust gas to be easily wasted directly, resulting in losses. In the prior art, there is a lack of a heat energy utilization device that can be quickly introduced into the high-pressure boiler exhaust gas emission system to utilize the waste heat of the high-pressure boiler exhaust gas. Therefore, the present application provides a high-pressure boiler exhaust gas heat energy utilization device to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-pressure boiler tail gas heat energy utilization device to solve the problem that the tail gas of some existing high-pressure boilers is directly discharged to the outside through the tail gas pipe, resulting in the waste heat in the tail gas being easily wasted directly and causing losses.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A high-pressure boiler tail gas heat energy utilization device comprises a chassis, a tail gas pipe is horizontally penetrated through the top of the chassis, horizontal ventilation pipes are symmetrically installed at both ends of the bottom of the chassis, and a spiral airway surrounding the tail gas pipe is arranged in the chassis, and both ends of the spiral airway are respectively connected to two ventilation pipes;

[0007] A detachable fixing frame is arranged in the middle of the chassis, and a plurality of heating components for heating the bottom of the spiral airway are installed on the fixing frame.

[0008] Optionally, a fixing seat is fixed to the bottom edge of the chassis, and a fixing hole is formed on the fixing seat.

[0009] Optionally, flanges are fixed to both ends of the tail pipe, and flanges are also fixed to one end of the two ventilation pipes away from the chassis.

[0010] Optionally, a cavity located below the bottom of the spiral air duct is opened in the middle of the chassis, and the fixing frame is slidably engaged and fixed in the cavity in the chassis and is located below the bottom of the spiral air duct.

[0011] Optionally, a heating port is opened in the middle of the upper end surface of the fixing frame, a plurality of sets of fixing ears are fixed at both ends of the heating port, and a plurality of the heating components are installed between the plurality of sets of fixing ears and exposed through the heating port.

[0012] Optionally, a power supply device is installed on the inner bottom surface of the fixed frame, and the power supply device is electrically connected to the heating component. Two slide grooves are symmetrically opened on the lower end surface of the fixed frame, and two electrodes electrically connected to the power supply device are respectively installed in the two slide grooves.

[0013] Optionally, a plurality of temperature detectors are arranged on the top of the chassis, and the plurality of temperature detectors are distributed equidistantly in a straight line along the top direction of the spiral airway.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] In the above scheme, thanks to the cooperation of the tail gas pipe, the vent pipe and the spiral air duct, the spiral air duct can be arranged around the tail gas pipe, so that the tail gas pipe can be used to discharge the tail gas in the high-pressure boiler and the vent pipe can be used to introduce air or fuel into the high-pressure boiler at the same time. The waste heat of the tail gas of the high-pressure boiler in the tail gas pipe can be used to preheat the air or fuel passing through the spiral air duct, thereby effectively improving the combustion efficiency and achieving good use effect.

[0016] At the same time, thanks to the setting of the fixed frame, the heating component and the power supply device can be used to generate heat to heat and supplement the air or fuel passing through the spiral air duct. Combined with the waste heat of the exhaust gas in the exhaust pipe, the heating effect of the air or fuel in the spiral air duct can be effectively improved.

[0017] In summary, the device can be conveniently connected to the tail gas and air intake system of the high-pressure boiler to use the waste heat of the tail gas to preheat the air or fuel in the air intake system, thereby improving the combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0019] Figure 1 It is a structural schematic diagram of a high-pressure boiler tail gas heat energy utilization device;

[0020] Figure 2 It is a schematic diagram of the internal structure of a high-pressure boiler tail gas heat energy utilization device;

[0021] Figure 3It is a structural schematic diagram of a fixing frame of a high-pressure boiler tail gas heat energy utilization device;

[0022] Figure 4 This is a structural schematic diagram of another angle of the fixing frame of the high-pressure boiler tail gas heat energy utilization device.

[0023] [reference numerals]

[0024] 1. Chassis; 101. Fixing seat; 102. Fixing hole; 2. Exhaust pipe; 3. Ventilation pipe; 4. Spiral airway; 5. Fixing frame; 501. Heating port; 502. Fixing ear; 503. Handle; 6. Heating component; 7. Power supply device; 8. Slide; 9. Electrode; 10. Temperature detector.

[0025] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0026] The following is a detailed description of a high-pressure boiler tail gas heat energy utilization device provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0027] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0028] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0029] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0030] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0031] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a high-pressure boiler exhaust gas heat energy utilization device, including a chassis 1, a fixing seat 101 is fixed to the bottom edge of the chassis 1, and a fixing hole 102 is opened on the fixing seat 101, so that the chassis 1 can be stably fixed by cooperating with an anchor bolt through the fixing hole 102.

[0032] The top of the chassis 1 is horizontally penetrated by an exhaust pipe 2, and horizontal ventilation pipes 3 are symmetrically installed at both ends of the bottom of the chassis 1, and a spiral airway 4 surrounding the exhaust pipe 2 is provided in the chassis 1, and both ends of the spiral airway 4 are respectively connected to the two ventilation pipes 3. Specifically, flanges are fixed at both ends of the exhaust pipe 2, and flanges are also fixed at one end of the two ventilation pipes 3 away from the chassis 1, so that the exhaust pipe 2 can be conveniently connected to the exhaust gas emission system of the high-pressure boiler, and the ventilation pipe 3 and the spiral airway 4 can be connected to the air intake system of the high-pressure boiler for the purpose of introducing air or fuel.

[0033] Cooperate Figure 3 and Figure 4 As shown, a detachable fixing frame 5 is provided in the middle of the chassis 1, and a plurality of heating components 6 for heating the bottom of the spiral air duct 4 are installed on the fixing frame 5. In specific implementation, a cavity located below the bottom of the spiral air duct 4 is opened in the middle of the chassis 1, and the fixing frame 5 is slidably engaged and fixed in the cavity in the chassis 1, and is located below the bottom of the spiral air duct 4.

[0034] A heating port 501 is provided in the middle of the upper end surface of the fixing frame 5, and a plurality of fixing ears 502 are fixed at both ends of the heating port 501, and a plurality of heating components 6 are installed between the plurality of fixing ears 502 and exposed through the heating port 501, so that the heating components 6 can heat the bottom of the spiral airway 4 through the heating port 501.

[0035] In addition, one side of the fixing frame 5 extends out of the outside of the chassis 1 and is fixed with a handle 503. A power supply device 7 is installed on the inner bottom surface of the fixing frame 5. The power supply device 7 is electrically connected to the heating component 6, and two slide grooves 8 are symmetrically opened on the lower end surface of the fixing frame 5. Two electrodes 9 electrically connected to the power supply device 7 are respectively installed in the two slide grooves 8. Therefore, when the fixing frame 5 is slid into the cavity in the chassis 1, the electrodes 9 can be used to connect to the circuits such as the wires in the chassis 1, so that the heating component 6 and the power supply device 7 can be directly powered by the external circuit of the chassis 1.

[0036] Specifically, a plurality of temperature detectors 10 are disposed on the top of the chassis 1 , and the plurality of temperature detectors 10 are equidistantly distributed in a straight line along the top direction of the spiral air duct 4 , so as to conveniently monitor the temperature of air or fuel in the spiral air duct 4 .

[0037] The utility model provides a working principle. The high-pressure boiler exhaust gas heat energy utilization device can, when in use, connect the exhaust pipe 2 to the exhaust gas emission system of the high-pressure boiler, and connect the vent pipe 3 and the spiral air channel 4 to the air intake system of the high-pressure boiler, so that the exhaust pipe 2 can be used to discharge the exhaust gas in the high-pressure boiler and the vent pipe 3 can be used to introduce air or fuel into the high-pressure boiler at the same time. The waste heat of the high-pressure boiler exhaust gas in the exhaust pipe 2 can be used to preheat the air or fuel passing through the spiral air channel 4, thereby effectively improving the combustion efficiency and achieving good use effect.

[0038] In addition, the air or fuel passing through the spiral air duct 4 can be further heated and supplemented by the heating component 6 and the power supply device 7 arranged on the fixed frame 5. In combination with the waste heat of the exhaust gas in the exhaust pipe 2, the heating effect of the air or fuel in the spiral air duct 4 can be effectively improved.

[0039] In summary, the device can be conveniently connected to the tail gas and air intake system of the high-pressure boiler to use the waste heat of the tail gas to preheat the air or fuel in the air intake system, thereby improving the combustion efficiency.

[0040] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A device for utilizing heat energy from tail gas of a high-pressure boiler, comprising a chassis (1), characterized in that: The top of the chassis (1) is horizontally penetrated by an exhaust pipe (2), and horizontal ventilation pipes (3) are symmetrically installed at both ends of the bottom of the chassis (1), and a spiral air duct (4) surrounding the exhaust pipe (2) is arranged inside the chassis (1), and both ends of the spiral air duct (4) are respectively connected to the two ventilation pipes (3); A detachable fixing frame (5) is arranged in the middle of the chassis (1), and a plurality of heating components (6) for heating the bottom of the spiral air channel (4) are installed on the fixing frame (5).

2. The high-pressure boiler tail gas heat energy utilization device according to claim 1, characterized in that: A fixing seat (101) is fixed to the bottom edge of the chassis (1), and a fixing hole (102) is provided on the fixing seat (101).

3. The high-pressure boiler tail gas heat energy utilization device according to claim 1, characterized in that: Flanges are fixed to both ends of the tail gas pipe (2), and flanges are also fixed to one end of the two ventilation pipes (3) away from the chassis (1).

4. The high-pressure boiler tail gas heat energy utilization device according to claim 1, characterized in that: A cavity located below the bottom of the spiral air duct (4) is opened in the middle of the chassis (1), and the fixing frame (5) is slidably engaged and fixed in the cavity in the chassis (1) and is located below the bottom of the spiral air duct (4).

5. The high-pressure boiler tail gas heat energy utilization device according to claim 4, characterized in that: A heating port (501) is provided in the middle of the upper end surface of the fixing frame (5), a plurality of sets of fixing ears (502) are fixed at both ends of the heating port (501), and a plurality of the heating components (6) are installed between the plurality of sets of fixing ears (502) and exposed through the heating port (501).

6. The high-pressure boiler tail gas heat energy utilization device according to claim 4, characterized in that: A power supply device (7) is installed on the inner bottom surface of the fixing frame (5), and the power supply device (7) is electrically connected to the heating component (6). Two slide grooves (8) are symmetrically opened on the lower end surface of the fixing frame (5), and two electrodes (9) electrically connected to the power supply device (7) are respectively installed in the two slide grooves (8).

7. The high-pressure boiler tail gas heat energy utilization device according to claim 1, characterized in that: A plurality of temperature detectors (10) are arranged on the top of the chassis (1), and the plurality of temperature detectors (10) are distributed in a straight line and at equal distances along the top direction of the spiral airway (4).

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