Flue gas waste heat recovery device of gas-steam boiler

Abstract

The utility model relates to the field of flue gas waste heat recovery, and discloses a flue gas waste heat recovery device of a gas-steam boiler, which comprises a frame body, a back clamping fixing clamp is fixedly connected to the outer wall of one end of the frame body, and a second back clamping fixing clamp is fixedly connected to the outer wall of one end, close to the back clamping fixing clamp, of the frame body. According to the efficient waste heat recovery device, through mutual cooperation of the structures, a larger contact area of a heat exchange structure is achieved, efficient waste heat recovery is achieved, meanwhile, installation is convenient and fast, maintenance is convenient, and the efficient waste heat recovery device is more practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flue gas waste heat recovery, specifically is gas steam boiler flue gas waste heat recovery device. BACKGROUND

[0002] In the industrial heat supply system, gas steam boiler plays a pivotal role, and the large amount of waste heat resources contained in its exhaust process becomes a valuable opportunity to improve energy efficiency and reduce environmental pressure. At present, many flue gas waste heat recovery technologies have emerged in the market, aiming to capture and utilize this part of waste heat, but the actual application effect is different, and there are still many challenges.

[0003] For example, Chinese patent CN207763546U discloses a gas boiler flue gas waste heat recovery device, which realizes effective recovery of flue gas waste heat through specific heat exchange component structure. However, although this patent solves the problem of flue gas waste heat recovery to some extent, it still has some limitations in actual application, although the patent has some innovation in heat exchange design, but when facing high temperature, high humidity or complex composition of flue gas, its heat exchange efficiency still needs to be further improved to fully tap the waste heat potential of flue gas. Due to the changeable working conditions such as composition and temperature of flue gas, the device of this patent may show certain instability when adapting to different working conditions, limiting its application in more extensive industrial scenarios, and the installation process is not convenient and fast. For this reason, we propose a gas steam boiler flue gas waste heat recovery device. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the shortcomings of the prior art, the utility model provides a gas steam boiler flue gas waste heat recovery device, which solves the above problems.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme: a gas steam boiler flue gas waste heat recovery device, comprising a frame, the outer wall of one end of the frame is fixedly connected with a back clamping fixing clamp, the outer wall of one end of the frame close to the back clamping fixing clamp is fixedly connected with a second back clamping fixing clamp, and the back clamping fixing clamp is parallel to the second back clamping fixing clamp, and the top of the frame is fixedly connected with an input pipe.

[0008] Preferably, the outer wall of one end of the input pipe is in frictional contact with the output end of one side of the frame, a fixing clamp is clamped on the outer wall of one end of the input pipe, a fixing sleeve is movably connected to the output end of one side of the fixing clamp, and the output end of one end of the fixing sleeve away from the fixing clamp is screwedly connected to the output end of one side of the frame.

[0009] Preferably, the inner wall of the frame is fixedly connected with a plurality of shunt pipes at the bottom, the top output end of the shunt pipe is fixedly connected with a plurality of absorption pipes, the top output end of the absorption pipe is fixedly connected with a circulation pipe, and the circulation pipe is penetrated through the outer wall of the frame on one side.

[0010] Preferably, the circulation pipe is fixedly connected with a second circulation pipe at the output end away from the absorption pipe, the second circulation pipe is fixedly connected with a third circulation pipe at the output end away from the circulation pipe, and the third circulation pipe is fixedly connected with a fourth circulation pipe at the output end away from the second circulation pipe.

[0011] Preferably, the shunt pipe and the absorption pipe are provided with four groups.

[0012] Preferably, the fourth circulation pipe is fixedly connected with a plurality of output pipes at the top end output end.

[0013] Preferably, the bottom of the frame is fixedly connected with a plurality of supporting legs.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a gas steam boiler flue gas waste heat recovery device, has the following beneficial effects:

[0016] 1、 this gas steam boiler flue gas waste heat recovery device, through the optimized heat exchange structure and the increased contact area, the heat exchange efficiency between the flue gas and the heat transfer medium is improved significantly, thereby realizes the more efficient waste heat recovery, can more fully capture and utilize the waste heat resource in the flue gas, promotes the overall energy utilization efficiency.

[0017] 2、 this gas steam boiler flue gas waste heat recovery device, considers multiple working conditions and gas steam boiler types, has strong universality and adaptability. Whether in high temperature, high humidity or containing corrosive component flue gas environment, the device can keep stable operation.

[0018] 3、 this gas steam boiler flue gas waste heat recovery device, through the design of back joint fixing clamp, the installation operation of whole device is more simple, modular, reduces the manufacturing cost, simultaneously, it is convenient for the maintenance and replacement of later period, reduces the operation and maintenance burden of enterprise, improves the maintainability and service life of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the structure schematic view of the utility model;

[0020] Fig. 2 It is the structure side view schematic view of the utility model;

[0021] Fig. 3 It is the section view schematic view of the utility model.

[0022] In the figure: 1, frame body; 2, back clamping fixing clamp; 3, second back clamping fixing clamp; 4, input pipe; 5, fixing clamp; 6, fixed sleeve; 7, shunt pipe; 8, absorption pipe; 9, circulating pipe; 10, second circulating pipe; 11, third circulating pipe; 12, fourth circulating pipe; 13, output pipe; 14, supporting leg. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figs. 1-3 , the gas steam boiler flue gas waste heat recovery device, including frame body 1, frame body 1 as the main support structure of the whole device, carries all other components, frame body 1 one end outer wall fixedly connected with back clamping fixing clamp 2, for stably installing the device at the flue gas outlet of gas steam boiler, frame body 1 is fixedly connected with the second back clamping fixing clamp 3 on the outer wall of one end close to back clamping fixing clamp 2, ensure that the device is closely connected with the flue gas outlet of the boiler, prevent the leakage of flue gas, and back clamping fixing clamp 2 and the second back clamping fixing clamp 3 are parallel, frame body 1 top one end fixedly connected with input pipe 4, guide flue gas from the flue gas outlet of the boiler into the device inside, through the cooperation with fixing clamp 5 and fixed sleeve 6, ensure that flue gas does not leak.

[0025] Further, the outer wall of one end of the input pipe 4 is in frictional contact with the output end of one side of the frame body 1, the outer wall of one end of the input pipe 4 is clamped with the fixing clamp 5, the output end of one side of the fixing clamp 5 is movably connected with the fixed sleeve 6, and the output end of one end of the fixed sleeve 6 away from the fixing clamp 5 is threadedly connected to the output end of one side of the frame body 1.

[0026] Further, a plurality of shunt pipes 7 are fixedly connected to the inner wall of the frame body 1, for improving the contact area of flue gas and absorption pipe, improving the waste heat absorption efficiency, the top output end of the shunt pipe 7 is fixedly connected with a plurality of absorption pipes 8, which maximally contact with flue gas, absorb the waste heat in flue gas, and transfer the absorbed heat to the circulating pipe system for reuse, the top output end of the absorption pipe 8 is fixedly connected with the circulating pipe 9, and the output end of one end of the circulating pipe 9 penetrates the outer wall of one side of the frame body 1.

[0027] Further, the circulation pipe 9 is fixedly connected with the second circulation pipe 10 at one end of the output end away from the absorption pipe 8, the second circulation pipe 10 is fixedly connected with the third circulation pipe 11 at one end of the output end away from the circulation pipe 9, the third circulation pipe 11 is fixedly connected with the fourth circulation pipe 12 at one end of the output end away from the second circulation pipe 10, and the circulation pipe 9, the second circulation pipe 10, the third circulation pipe 11 and the fourth circulation pipe 12 form a pipeline system for heat transfer and circulation, so as to ensure efficient heat transfer inside the device and recycle the heat to the required place.

[0028] Further, four sets of the shunt pipe 7 and the absorption pipe 8 are arranged, so as to ensure efficient and reliable circulation.

[0029] Further, the fourth circulation pipe 12 is fixedly connected with a plurality of output pipes 13 at one end of the output end at the top, for discharging the flue gas after heat recovery.

[0030] Further, a plurality of supporting legs 14 are fixedly connected with the bottom of the frame body 1, so as to ensure the stability and reliability of the whole device, and enable the device to stably operate in various working environments.

[0031] Working principle: first, the frame body 1 serves as the main supporting structure, and the device is stably installed at the flue gas outlet of the gas-steam boiler by the back clamping fixed clamps 2 and 3. The flue gas enters the frame body 1 through the input pipe 4, and the input pipe 4 is tightly connected with the frame body 1 through the fixed clamps 5 and the fixed sleeves 6, so as to ensure that the flue gas does not leak, and the flue gas entering the frame body 1 is then dispersed into a plurality of absorption pipes 8 through the shunt pipe 7. These absorption pipes 8 are designed to maximize contact with the flue gas, so as to effectively absorb the waste heat in the flue gas. The heat absorbed by the absorption pipes 8 is transferred and circulated through the circulation pipe 9, the second circulation pipe 10, the third circulation pipe 11 and the fourth circulation pipe 12. The design of these circulation pipes ensures efficient heat transfer, and can bring the heat to the required place for recycling. Finally, the flue gas after heat recovery is discharged from the device through the output pipes 13 at the top of the fourth circulation pipe 12, and the recovered heat can be supplied to other devices or systems requiring heat through the circulation pipeline system, so as to realize the recycling of waste heat. In addition, the supporting legs 14 at the bottom of the frame body 1 ensure the stability and reliability of the whole device, so that it can stably operate in various working environments.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for flue gas from a gas-fired steam boiler, comprising a frame (1), characterized in that: The frame (1) has a back snap-fit ​​clamp (2) fixedly connected to one end of its outer wall. The frame (1) has a second back snap-fit ​​clamp (3) fixedly connected to the outer wall of the end near the back snap-fit ​​clamp (2). The back snap-fit ​​clamp (2) and the second back snap-fit ​​clamp (3) are parallel. The top end of the frame (1) has an input pipe (4) fixedly connected to one end.

2. The waste heat recovery device for flue gas from a gas-fired steam boiler according to claim 1, characterized in that: The outer wall of one end of the input pipe (4) is in frictional contact with the output end of one side of the frame (1). A fixing clip (5) is snapped onto the outer wall of one end of the input pipe (4). A fixing sleeve (6) is movably connected to the output end of one side of the fixing clip (5). The output end of the fixing sleeve (6) away from the fixing clip (5) is threadedly connected to the output end of one side of the frame (1).

3. The waste heat recovery device for flue gas from a gas-fired steam boiler according to claim 1, characterized in that: The bottom of the inner wall of the frame (1) is fixedly connected to several diversion pipes (7), the top output end of the diversion pipes (7) is fixedly connected to several absorption pipes (8), the top output end of the absorption pipes (8) is fixedly connected to a circulation pipe (9), and one end of the circulation pipe (9) passes through the outer wall of one side of the frame (1).

4. The waste heat recovery device for flue gas from a gas-fired steam boiler according to claim 3, characterized in that: The output end of the circulation tube (9) away from the absorption tube (8) is fixedly connected to a second circulation tube (10), the output end of the second circulation tube (10) away from the circulation tube (9) is fixedly connected to a third circulation tube (11), and the output end of the third circulation tube (11) away from the second circulation tube (10) is fixedly connected to a fourth circulation tube (12).

5. The waste heat recovery device for flue gas from a gas-fired steam boiler according to claim 3, characterized in that: The diversion pipe (7) and absorption pipe (8) are provided in four sets.

6. The waste heat recovery device for flue gas from a gas-fired steam boiler according to claim 4, characterized in that: The fourth circulation tube (12) has several output tubes (13) fixedly connected to one of its top output ends.

7. The waste heat recovery device for flue gas from a gas-fired steam boiler according to claim 1, characterized in that: The bottom of the frame (1) is fixedly connected with several support legs (14).

Images