Waste heat recovery device for heating furnace
Technical Field
The utility model relates to the technical field of heating furnaces, in particular to a waste heat recovery device for a heating furnace.
Background
In the production process of the heating furnace, a certain amount of heat energy is discharged in the form of flue gas. And the waste heat contained in the flue gas can be recycled through a heat exchange technology, so that the purposes of saving energy and reducing pollution emission are achieved.
Among the prior art, through retrieving, find chinese patent and disclose "waste heat recovery device for heating furnace", its application number is "202021935616.5", above-mentioned patent is mainly including placing the board, the left side of placing the board top is equipped with waste heat recoverer, waste heat recoverer's top intercommunication has the steam export, waste heat recoverer's inner chamber is equipped with the heat exchange tube, the one end of heat exchange tube runs through and extends to waste heat recoverer's left side, the other end of heat exchange tube runs through and extends to waste heat recoverer's right side, the right side of placing the board top is equipped with the water tank, the left side of water tank is equipped with the aspirator, the input of aspirator is equipped with the breathing pipe, the left side and the heat exchange tube intercommunication of breathing pipe, the output intercommunication of aspirator has the outlet duct. Said utility model can be used for filtering and discharging hot gas. But above-mentioned device is lower to heating furnace flue gas waste heat utilization's efficiency, and carries some smoke and dust in the flue gas of heating furnace, directly inserts the heat transfer inside the heat exchange tube, uses for a long time to block up and blocks up the heat exchange tube easily and influence the heat transfer effect, is unfavorable for maximize heat transfer effect, and crooked heat exchange tube has still increased the clearance degree of difficulty, and the practicality is not good. Therefore, the utility model provides a waste heat recovery device for a heating furnace, which solves the problems in the background technology.
Disclosure of utility model
The utility model aims to provide a waste heat recovery device for a heating furnace, which realizes the efficient recovery and reutilization of waste heat of high-temperature hot gas discharged by the heating furnace, improves the energy utilization efficiency, is beneficial to environmental protection, energy conservation and emission reduction, and can filter the entering hot gas under the action of a filter plate so as to remove large-particle impurities therein and protect subsequent heat exchange equipment.
In order to achieve the above purpose, the waste heat recovery device for the heating furnace comprises a heat exchange chamber, wherein a heat exchange main pipe is fixedly connected inside the heat exchange chamber, two circulating chambers which are arranged up and down are formed inside the heat exchange main pipe through a partition board, a plurality of heat exchange pipes are uniformly and fixedly connected to the outer side of the heat exchange main pipe, and inlet pipes and outlet pipes which extend to the outer side of the heat exchange chamber are arranged at two ends of the two circulating chambers;
The utility model discloses a heat exchange chamber, including the gas-supply pipe of heat exchange chamber, the gas-supply pipe is connected with the gas inlet pipe in one side fixedly, the gas-supply pipe is inside and be located the top sliding connection of gas inlet pipe has the mounting panel, the inside filter that inlays of mounting panel is equipped with, mounting panel bottom symmetry fixedly connected with two connecting rods, two the connecting rod bottom fixedly connected with connecting plate jointly, the bottom is installed to the gas-supply pipe bottom, the bottom in the bottom of bottom inner wall is installed to the connecting plate bottom.
According to the waste heat recovery device for the heating furnace, the bottom cover is connected with the bottom of the gas pipe in a screwing mode, and the connecting plate is connected with the bottom cover in a rotating mode.
According to the waste heat recovery device for the heating furnace, an insulating layer is arranged on the outer side of the heat exchange chamber.
According to the waste heat recovery device for the heating furnace, the transverse positions of the heat exchange tubes are staggered.
According to the waste heat recovery device for the heating furnace, the bottom of the partition plate is of a V-shaped structure, and the inlet and outlet pipe positioned above the partition plate is arranged in the middle of the V-shaped structure.
According to the waste heat recovery device for the heating furnace, the openings of the heat exchange tubes above the partition plate are all located above the partition plate.
The utility model has the following beneficial effects:
1. Compared with the prior art, the waste heat recovery device for the heating furnace realizes the efficient recovery and reutilization of the waste heat of the high-temperature hot gas discharged by the heating furnace, improves the energy utilization efficiency, and is beneficial to environmental protection, energy conservation and emission reduction;
2. Compared with the prior art, the waste heat recovery device for the heating furnace can filter the entering hot gas under the action of the filter plate so as to remove large-particle impurities in the hot gas and protect subsequent heat exchange equipment. Meanwhile, the filter plate can be cleaned or replaced under the condition that the whole gas pipe is not dismounted, so that the maintenance convenience of equipment is greatly improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a schematic view of a first overall structure of a waste heat recovery device for a heating furnace according to the present utility model;
FIG. 2 is a schematic view of a second overall structure of a waste heat recovery device for a heating furnace according to the present utility model;
FIG. 3 is a schematic diagram showing a schematic diagram of a schematic cross-sectional front view of a waste heat recovery apparatus for a heating furnace according to the present utility model;
FIG. 4 is an enlarged schematic view of the waste heat recovery device for a heating furnace of the present utility model at A in FIG. 3;
fig. 5 is a schematic diagram of a partition plate structure of a waste heat recovery device for a heating furnace according to the present utility model.
Legend description:
1. The heat exchange device comprises a heat exchange chamber, a gas transmission pipe, a heat exchange main pipe, a partition board, a flow chamber, a 7, a gas inlet pipe, a gas outlet pipe, a 8, a connecting plate, a 9, a heat exchange pipe, a 10, a gas inlet pipe, a 11, a heat preservation layer, a 12, a bottom cover, a 13, a mounting plate, a 14, a filter plate, a 15 and a connecting rod.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
Referring to fig. 1-5, the waste heat recovery device for a heating furnace according to an embodiment of the utility model comprises a heat exchange chamber 1, wherein an insulation layer 11 is arranged on the outer side of the heat exchange chamber 1, so that heat dissipation of the heat exchange chamber 1 is reduced. The inside fixedly connected with heat transfer main pipe 4 of heat transfer room 1, the inside circulation room 6 that sets up from top to bottom that passes through baffle 5 of heat transfer main pipe 4 forms, the outside of heat transfer main pipe 4 evenly fixedly connected with a plurality of heat exchange tubes 9, the both ends of two circulation rooms 6 all are equipped with the business turn over pipe 7 that extend to the heat transfer room 1 outside, the V-arrangement structure is established to the baffle 5 bottom, wherein the business turn over pipe 7 that is located the top locates the middle part of V-arrangement structure, ensures that hot water can leave circulation room 6 through business turn over pipe 7 completely.
When in use, the upper circulation chamber 6 is used as a circulation channel of cold water, and a valve can be arranged at the outer side of the inlet pipe 7 for controlling the on-off of the inlet pipe 7. Cold water is introduced into the circulation chamber 6 from the inlet and outlet pipe 7 at one side, the disconnection of the outlet pipe 7 at the other side is ensured, and the cold water fills the heat exchange mother pipe 4 and the heat exchange pipe 9. When the hot gas flows in the heat exchange chamber 1, the hot gas fully exchanges heat with cold water in the heat exchange tube 9 to heat the cold water, and the heated hot water is discharged through the inlet and outlet tube 7 and can be used for heating and the like. The lower circulation chamber 6 is used as a circulation channel of air, the air flows from the inlet and outlet pipe 7 to the inside of the circulation chamber 6 and the heat exchange pipe 9, and the hot air and the cold air in the heat exchange pipe 9 are fully subjected to heat exchange so as to preheat the air. The preheated air is conveyed into the heating furnace through the inlet pipe 7 to be combusted, so that the combustion efficiency of the heating furnace can be improved, and the fuel consumption can be reduced. Meanwhile, according to the actual use requirements, such as non-cold seasons, when heating is not needed, the upper circulation chamber 6 can also be used for preheating air, and the use requirements under different seasons and working conditions can be met. The high-efficiency recovery and reutilization of the waste heat of the high-temperature hot gas discharged by the heating furnace are realized, the energy utilization efficiency is improved, and the environment protection, energy conservation and emission reduction are facilitated.
The two ends of the heat exchange chamber 1 are respectively fixedly connected with an air delivery pipe 2 and an exhaust pipe 3 of an L-shaped structure, one side of the air delivery pipe 2 is fixedly connected with an air inlet pipe 10, a mounting plate 13 is slidably connected inside the air delivery pipe 2 and above the air inlet pipe 10, a filter plate 14 is embedded inside the mounting plate 13, two connecting rods 15 are symmetrically and fixedly connected to the bottom of the mounting plate 13, a connecting plate 8 is fixedly connected to the bottoms of the two connecting rods 15, a bottom cover 12 is installed at the bottom of the air delivery pipe 2, the bottom cover 12 is connected with the bottom of the air delivery pipe 2 in a screwing mode, the bottom of the connecting plate 8 is installed at the bottom of the inner wall of the bottom cover 12, and the connecting plate 8 is rotationally connected with the bottom cover 12.
The hot gas of the heating furnace is conveyed into the heat exchange chamber 1 through the gas inlet pipe 10 and the gas transmission pipe 2, and is discharged through the gas exhaust pipe 3 after heat exchange with the heat exchange main pipe 4. When the hot air flows into the air delivery pipe 2 from the air inlet pipe 10, the entering hot air can be filtered under the action of the filter plate 14 so as to remove large-particle impurities in the hot air and protect subsequent heat exchange equipment. Meanwhile, the mounting plate 13 and the filter plate 14 are conveniently taken out by rotating the bottom cover 12, so that the filter plate 14 can be cleaned or replaced under the condition that the whole air conveying pipe 2 is not dismounted, and the maintenance convenience of equipment is greatly improved.
The transverse positions of the heat exchange tubes 9 are staggered, so that the flow resistance of hot gas in the heat exchange chamber 1 is reduced, and the hot gas is better contacted with the outer sides of the heat exchange tubes 9. The openings of the heat exchange tubes 9 above the partition plate 5 are all located above the partition plate 5, so that the heat exchange tubes 9 above the partition plate 5 are all inclined, and hot water inside the heat exchange tubes 9 can flow out automatically.
When the water heater is used, the upper circulation chamber 6 is used as a circulation channel of cold water, and a valve can be arranged at the outer side of the inlet pipe 7 and used for controlling the on-off of the inlet pipe 7. Cold water is introduced into the circulation chamber 6 from the inlet and outlet pipe 7 at one side, the disconnection of the outlet pipe 7 at the other side is ensured, and the cold water fills the heat exchange mother pipe 4 and the heat exchange pipe 9. When the hot gas flows in the heat exchange chamber 1, the hot gas fully exchanges heat with cold water in the heat exchange tube 9 to heat the cold water, and the heated hot water is discharged through the inlet and outlet tube 7 and can be used for heating and the like. The lower circulation chamber 6 is used as a circulation channel of air, the air flows from the inlet and outlet pipe 7 to the inside of the circulation chamber 6 and the heat exchange pipe 9, and the hot air and the cold air in the heat exchange pipe 9 are fully subjected to heat exchange so as to preheat the air. The preheated air is conveyed into the heating furnace through the inlet pipe 7 to be combusted, so that the combustion efficiency of the heating furnace can be improved, and the fuel consumption can be reduced. Meanwhile, according to the actual use requirements, such as non-cold seasons, when heating is not needed, the upper circulation chamber 6 can also be used for preheating air, and the use requirements under different seasons and working conditions can be met. The high-efficiency recovery and reutilization of the waste heat of the high-temperature hot gas discharged by the heating furnace are realized, the energy utilization efficiency is improved, and the environment protection, energy conservation and emission reduction are facilitated;
When the hot air flows into the air delivery pipe 2 from the air inlet pipe 10, the entering hot air can be filtered under the action of the filter plate 14 so as to remove large-particle impurities in the hot air and protect subsequent heat exchange equipment. Meanwhile, the mounting plate 13 and the filter plate 14 are conveniently taken out by rotating the bottom cover 12, so that the filter plate 14 can be cleaned or replaced under the condition that the whole air conveying pipe 2 is not dismounted, and the maintenance convenience of equipment is greatly improved.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.