1. The utility model provides a heat storage type waste heat recovery device, includes waste heat recovery pipe (1), its characterized in that: the utility model discloses a waste heat recovery device, including waste heat recovery pipe (1), flue connecting pipe (2) is provided with in the both sides an organic whole of waste heat recovery pipe (1), one side the one end of flue connecting pipe (2) is provided with flue gas inlet (29), the opposite side the one end of flue connecting pipe (2) is provided with exhanst gas outlet (30), flue gas calandria (3) is installed to the both sides of flue connecting pipe (2), is located the internally mounted of the flue connecting pipe (2) of flue gas inlet (29) one end has heat transfer spiral pipe (18), and flue gas calandria (3) and flue connecting pipe (2) are sealed fixed through flange (4), the top welding of waste heat recovery pipe (1) is fixed with vapour package (5), the inside of waste heat recovery pipe (1) is provided with flue gas heat transfer chamber (21), the inside both sides of flue gas heat transfer chamber (21) inside all are provided with a set of heat exchange plate subassembly, the inside intermediate position department of flue gas heat transfer chamber (21) is provided with steam auxiliary heating device (17), and the upper end of the steam auxiliary heating device (17) extends to the interior of the steam drum (5).

2. The heat storage type waste heat recovery device according to claim 1, wherein: steam auxiliary heating device (17) comprise steam tedge (22), inlet tube (23), standpipe (24), steam outlet (25) and moisturizing mouth (26), the lower extreme of inlet tube (23) is located the inside of flue gas heat transfer chamber (21), and the upper end of inlet tube (23) extends to the inside of steam pocket (5), steam tedge (22) are located one side of inlet tube (23), and steam tedge (22) are provided with six, the upper end of standpipe (24) is fixed with steam tedge (22) and inlet tube (23) seal respectively, the upper end of steam tedge (22) extends to the inside of steam pocket (5), steam outlet (25) are located the upper end of steam tedge (22), moisturizing mouth (26) are provided with seven, and moisturizing mouth (26) are fixed with inlet tube (23) seal respectively.

3. The heat storage type waste heat recovery device according to claim 1, wherein: every group the heat transfer board subassembly comprises first fan-shaped heat transfer board (15) and the fan-shaped heat transfer board of second (16), and first fan-shaped heat transfer board (15) and the fan-shaped heat transfer board of second (16) all are provided with two, first fan-shaped heat transfer board (15) and the fan-shaped heat transfer board of second (16) pass through bolt fixed connection with waste heat recovery pipe respectively, and are dislocation interval distribution between first fan-shaped heat transfer board (15) and the fan-shaped heat transfer board of second (16), the upper end of first fan-shaped heat transfer board (15) and the fan-shaped heat transfer board of second (16) is provided with the heat-conducting plate, and the heat-conducting plate extends to the inside of steam pocket (5).

4. The heat storage type waste heat recovery device according to claim 1, wherein: steam turbine (6) are installed to the upper end of steam pocket (5) one side, and steam pocket (5) and steam turbine (6) are sealed fixed through steam calandria (10), generator (7) are installed to the one end of steam turbine (6), the below of steam turbine (6) is provided with condensing box (8), the inside fixed mounting of condensing box (8) has condenser (20), and the upper end of condenser (20) passes through the connecting pipe with the gas vent of steam turbine (6) and seals fixedly, the lower extreme of condenser (20) is provided with comdenstion water calandria (11), heat transfer spiral pipe (18) are close to the one end of waste heat recovery pipe (1) and are provided with comdenstion water inlet pipe (28), and comdenstion water inlet pipe (28) and comdenstion water calandria (11) sealed fixed.

5. The heat storage type waste heat recovery device according to claim 4, wherein: heat exchange fins (27) are arranged outside the heat exchange spiral pipe (18), a plurality of heat exchange fins (27) are arranged, and the heat exchange fins (27) are distributed in sequence.

6. The heat storage type waste heat recovery device according to claim 1, wherein: the opposite side of steam pocket (5) is provided with heat storage cylinder (9), the lower extreme sealing fixation of heat storage cylinder (9) one side has hot water to advance pipe (12), and the one end that hot water advances pipe (12) and heat transfer spiral pipe (18) is close to flue gas inlet (29) one end sealing fixation, the upper end of heat storage cylinder (9) opposite side is provided with first moisturizing pipe (13), and the one end of first moisturizing pipe (13) is linked together with steam pocket (5).

7. The heat storage type waste heat recovery device according to claim 6, wherein: a thermometer (31) is fixedly arranged at the front end of the heat storage cylinder (9).

8. The heat storage type waste heat recovery device according to claim 1, wherein: a second water replenishing pipe (32) is arranged on one side of the upper end of the steam pocket (5), and a drain valve (19) is arranged on the other side of the lower end of the steam pocket (5).

Background

The waste heat refers to sensible heat and latent heat which are not reasonably utilized in the original design in the energy consumption device of the put-in-operation industrial enterprise due to the limitations of factors such as history, technology, concept and the like. The method comprises the steps of high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like. According to investigation, the total waste heat resources of various industries account for about 17% -67% of the total fuel consumption, the recyclable waste heat resources account for about 60% of the total waste heat resources, and the waste heat resources belong to secondary energy sources and are products obtained by converting primary energy sources or combustible materials or residual heat generated in the fuel combustion process after a certain technological process is completed.

However, the existing waste heat recovery device has some defects in the using process, and a considerable part of heat energy loss still exists in the recovery process, so that the heat recovery efficiency is low, and therefore the existing requirements are not met.

Disclosure of Invention

The present invention is directed to a heat storage type waste heat recovery device, so as to solve the problem of low heat recovery efficiency of the waste heat recovery device proposed in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a heat storage type waste heat recovery device comprises a waste heat recovery pipe, wherein flue connecting pipes are integrally arranged on two sides of the waste heat recovery pipe, a flue gas inlet is formed in one end of each flue connecting pipe, a flue gas outlet is formed in one end of each flue connecting pipe, the two sides of the flue connecting pipe are provided with flue gas calandria, the inside of the flue connecting pipe at one end of the flue gas inlet is provided with a heat exchange spiral pipe, the flue gas calandria and the flue connecting pipe are fixed by a connecting flange in a sealing way, a steam drum is welded and fixed above the waste heat recovery pipe, a flue gas heat exchange cavity is arranged in the waste heat recovery pipe, a group of heat exchange plate assemblies are arranged on two sides in the flue gas heat exchange cavity, and a steam auxiliary heating device is arranged in the middle of the inside of the flue gas heat exchange cavity, and the upper end of the steam auxiliary heating device extends to the inside of the steam drum.

Preferably, steam auxiliary heating device comprises steam tedge, inlet tube, standpipe, steam outlet and moisturizing mouth, the lower extreme of inlet tube is located the inside in flue gas heat transfer chamber, and the upper end of inlet tube extends to the inside of steam drum, the steam tedge is located one side of inlet tube, and the steam tedge is provided with six, the upper end of standpipe is fixed with steam tedge and inlet tube seal respectively, the upper end of steam tedge extends to the inside of steam drum, the steam outlet is located the upper end of steam tedge, the moisturizing mouth is provided with seven, and the moisturizing mouth is fixed with the inlet tube seal respectively.

Preferably, every group the heat transfer plate subassembly comprises first fan-shaped heat transfer board and the fan-shaped heat transfer board of second, and first fan-shaped heat transfer board and the fan-shaped heat transfer board of second all are provided with two, first fan-shaped heat transfer board and the fan-shaped heat transfer board of second pass through bolt fixed connection with waste heat recovery pipe respectively, and be dislocation interval distribution between first fan-shaped heat transfer board and the fan-shaped heat transfer board of second, the upper end of first fan-shaped heat transfer board and the fan-shaped heat transfer board of second is provided with the heat-conducting plate, and the heat-conducting plate extends to the inside of steam pocket.

Preferably, the steam turbine is installed to the upper end of steam drum one side, and the steam drum passes through the steam calandria sealed fixed with the steam turbine, the generator is installed to the one end of steam turbine, the below of steam turbine is provided with the condensing box, the inside fixed mounting of condensing box has the condenser, and the upper end of condenser and the gas vent of steam turbine pass through the connecting pipe sealed fixed, the lower extreme of condenser is provided with the comdenstion water calandria, the one end that the heat transfer spiral pipe is close to waste heat recovery pipe is provided with the comdenstion water and advances the pipe, and the comdenstion water advances the pipe and is sealed fixed with the comdenstion water calandria.

Preferably, the heat exchange spiral pipe is externally provided with a plurality of heat exchange fins which are distributed in sequence.

Preferably, the opposite side of steam pocket is provided with a heat storage section of thick bamboo, the lower extreme sealing fixation of heat storage section of thick bamboo one side has hot water to advance the pipe, and the one end that hot water advances the pipe is close to the flue gas inlet with the heat transfer spiral pipe one end sealing fixation, the upper end of heat storage section of thick bamboo opposite side is provided with first moisturizing pipe, and the one end and the steam pocket of first moisturizing pipe are linked together, the hot water advances the pipe and all installs the water pump with the intermediate position department of first moisturizing pipe.

Preferably, a thermometer is fixedly installed at the front end of the heat storage cylinder.

Preferably, one side of the upper end of the steam drum is provided with a second water replenishing pipe, and the other side of the lower end of the steam drum is provided with a drain valve.

Compared with the prior art, the invention has the beneficial effects that:

1. the steam auxiliary heating device is arranged in the middle of the flue gas heat exchange cavity, the upper end part of the steam auxiliary heating device is positioned in the steam drum, water in the steam drum enters the water inlet pipe through the water replenishing port and then is accumulated at the bottom of the water storage pipe, meanwhile, the pipe body on the steam auxiliary heating device is made of high heat-conducting metal materials, high-temperature flue gas generates heat exchange with the lower end part of the steam auxiliary heating device in the flowing process of the flue gas heat exchange cavity to form rapid heating on water in the water storage pipe, a large amount of steam is generated after a certain temperature is reached, the steam enters the steam drum from the steam rising pipe through the steam outlet to be matched with the generated steam, the steam generation efficiency in the steam drum is improved, and through the mode, the generation amount of the steam is effectively improved in the flowing of inherent high-temperature flue gas, so that the recovery efficiency of the high-temperature flue gas is improved, and the power generation efficiency of the steam turbine is improved.

2. The invention is provided with a condensed water recovery heating mechanism, steam passing through a steam turbine enters a condenser in a condenser box through a connecting pipe, the steam is condensed during the moving process to form liquid water, the liquid water is conveyed to a condensed water inlet pipe through a condensed water calandria under the pressurization of a water pump, the condensed water enters the inside of a heat exchange spiral pipe from the condensed water inlet pipe, the heat exchange spiral pipe is positioned at the front end of a waste heat recovery pipe and preferentially contacts high-temperature flue gas from a flue gas calandria, meanwhile, a plurality of heat exchange fins distributed in sequence are arranged outside the heat exchange spiral pipe, the external high temperature is guided into a pipe body under the action of heat exchange to form the heating of the internal water, finally, the water enters the inside of a heat storage barrel through a hot water inlet pipe, the temperature of the internal water can be known through a thermometer outside the heat storage barrel, and the stored hot water has two purposes, on one hand, water can be supplemented into the steam drum, so that the water is kept at a higher temperature when entering the steam drum, and can be heated quickly to generate steam in a shorter time, the steam generation efficiency is further improved, and on the other hand, the water can be used as daily work water of a production workshop.

3. According to the invention, the heat exchange assemblies are arranged on the two sides of the flue gas heat exchange cavity and respectively consist of the two first fan-shaped heat exchange plates and the two second fan-shaped heat exchange plates, the first fan-shaped heat exchange plates and the second fan-shaped heat exchange plates are arranged at intervals in distribution, and a fixed gap is kept between the first fan-shaped heat exchange plates and the second fan-shaped heat exchange plates, so that the first fan-shaped heat exchange plates and the second fan-shaped heat exchange plates can block high-temperature flue gas in the flowing process of the high-temperature flue gas, the heat exchange time of the high-temperature flue gas and the fan-shaped heat exchange plates is prolonged, the heat exchange efficiency between the high-temperature flue gas and the fan-shaped heat exchange plates is further improved, and meanwhile, the flow of the flue gas is not influenced by the distribution structure between the first fan-shaped heat exchange plates and the second fan-shaped heat exchange plates on the premise of ensuring the heat exchange effect.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the heat recovery tube of the present invention;

FIG. 4 is a schematic view of the steam-assisted heating apparatus according to the present invention;

fig. 5 is a partially enlarged view of the area a in fig. 2 according to the present invention.

In the figure: 1. a waste heat recovery pipe; 2. a flue connecting pipe; 3. a flue gas calandria; 4. a connecting flange; 5. a steam drum; 6. a steam turbine; 7. a generator; 8. a condenser tank; 9. a heat storage cylinder; 10. a steam pipe bank; 11. a condensed water calandria; 12. a hot water inlet pipe; 13. a first water replenishing pipe; 14. a water pump; 15. a first sector heat exchange plate; 16. a second sector heat exchange plate; 17. a steam auxiliary heating device; 18. a heat exchange spiral pipe; 19. a drain valve; 20. a condenser; 21. a flue gas heat exchange cavity; 22. a steam riser pipe; 23. a water inlet pipe; 24. a water storage pipe; 25. a steam outlet; 26. a water replenishing port; 27. heat exchange fins; 28. feeding condensed water into the pipe; 29. a flue gas inlet; 30. a flue gas outlet; 31. a thermometer; 32. and a second water replenishing pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, an embodiment of the present invention is shown: a heat storage type waste heat recovery device comprises a waste heat recovery pipe 1, flue connecting pipes 2 are integrally arranged on two sides of the waste heat recovery pipe, a flue gas inlet 29 is arranged at one end of one flue connecting pipe 2, a flue gas outlet 30 is arranged at one end of the other flue connecting pipe 2, flue gas calandria 3 are arranged on two sides of the flue connecting pipe 2, a heat exchange spiral pipe 18 is arranged inside the flue connecting pipe 2 at one end of the flue gas inlet 29, and flue gas calandria 3 passes through flange 4 sealed fixed with flue connecting pipe 2, and the top of waste heat recovery pipe 1 is welded and is fixed with steam pocket 5, and waste heat recovery pipe 1's inside is provided with flue gas heat transfer chamber 21, and the inside both sides in flue gas heat transfer chamber 21 all are provided with a set of heat exchange plate subassembly, and the inside intermediate position department in flue gas heat transfer chamber 21 is provided with steam auxiliary heating device 17, and steam auxiliary heating device 17's upper end extends to the inside of steam pocket 5.

Further, the steam auxiliary heating device 17 is composed of steam rising pipes 22, a water inlet pipe 23, water storage pipes 24, steam outlets 25 and water replenishing ports 26, the lower ends of the water inlet pipes 23 are located inside the flue gas heat exchange cavities 21, the upper ends of the water inlet pipes 23 extend into the steam drum 5, the steam rising pipes 22 are located on one side of the water inlet pipes 23, six steam rising pipes 22 are arranged, the upper ends of the water storage pipes 24 are respectively fixed with the steam rising pipes 22 and the water inlet pipes 23 in a sealing mode, the upper ends of the steam rising pipes 22 extend into the steam drum 5, the steam outlets 25 are located at the upper ends of the steam rising pipes 22, the water replenishing ports 26 are arranged in seven numbers, the water replenishing ports 26 are respectively fixed with the water inlet pipes 23 in a sealing mode, the generation amount of steam is effectively increased in the flowing of inherent high-temperature flue gas, the recovery efficiency of the high-temperature flue gas is improved, and the power generation efficiency of the steam turbine is improved.

Further, every group heat transfer board subassembly comprises first fan-shaped heat transfer board 15 and the fan-shaped heat transfer board 16 of second, and first fan-shaped heat transfer board 15 and the fan-shaped heat transfer board 16 of second all are provided with two, first fan-shaped heat transfer board 15 and the fan-shaped heat transfer board 16 of second pass through bolt fixed connection with waste heat recovery pipe respectively, and be dislocation interval distribution between first fan-shaped heat transfer board 15 and the fan-shaped heat transfer board 16 of second, the upper end of first fan-shaped heat transfer board 15 and the fan-shaped heat transfer board 16 of second is provided with the heat-conducting plate, and the heat-conducting plate extends to the inside of steam pocket 5, improve the heat transfer time of high temperature flue gas and fan-shaped heat transfer board, further improve heat exchange efficiency between the two, distribution structure between the two does not influence the flow of flue gas under the prerequisite of guaranteeing the heat transfer effect simultaneously.

Further, steam turbine 6 is installed to the upper end of steam pocket 5 one side, and steam pocket 5 and steam turbine 6 pass through steam calandria 10 seal fixation, generator 7 is installed to the one end of steam turbine 6, the below of steam turbine 6 is provided with condensing box 8, the inside fixed mounting of condensing box 8 has condenser 20, and the upper end of condenser 20 passes through the connecting pipe seal fixation with the gas vent of steam turbine 6, the lower extreme of condenser 20 is provided with comdenstion water calandria 11, the one end that heat transfer spiral pipe 18 is close to waste heat recovery pipe 1 is provided with comdenstion water inlet pipe 28, and comdenstion water inlet pipe 28 and comdenstion water calandria 11 seal fixation, thereby take place the condensation and form liquid water between the in-process that removes, under the pressurization of water pump, carry liquid water to comdenstion water inlet pipe 28 through comdenstion water calandria 11, advance the inside that pipe 28 got into to heat transfer spiral pipe 18 by the comdenstion water.

Further, heat exchange fins 27 are arranged outside the heat exchange spiral pipe 18, the heat exchange fins 27 are provided with a plurality of heat exchange fins, the heat exchange fins 27 are distributed in sequence, and the heat exchange spiral pipe 18 is assisted to improve the heat exchange efficiency.

Further, the opposite side of steam pocket 5 is provided with heat storage cylinder 9, the lower extreme sealing fixation of heat storage cylinder 9 one side has hot water to advance tub 12, and the one end that hot water advances tub 12 and heat transfer spiral pipe 18 is close to gas inlet 29 is sealed fixed, the upper end of heat storage cylinder 9 opposite side is provided with first moisturizing pipe 13, and the one end of first moisturizing pipe 13 is linked together with steam pocket 5, hot water advances the intermediate position department of tub 12 and first moisturizing pipe 13 and all installs water pump 14, can be for supplementing water in the steam pocket 5 on the one hand, make water just keep higher temperature entering steam pocket 5, thereby can be heated fast in short time and produce steam, further improve steam production efficiency, on the other hand can regard as the daily work of production workshop to act on one hand.

Further, a thermometer 31 is fixedly mounted at the front end of the heat storage cylinder 9, and the temperature inside the heat storage cylinder 9 can be observed through the thermometer 31.

Further, one side of the upper end of the steam drum 5 is provided with a second water replenishing pipe 32, and the other side of the lower end of the steam drum 5 is provided with a drain valve 19.

The working principle is as follows: when the waste heat recovery device is used, high-temperature flue gas in the flue gas calandria 3 enters the flue gas heat exchange cavity 21 inside the waste heat recovery pipe 1 through the flue connecting pipe 2, in the flowing process of the high-temperature flue gas, the first fan-shaped heat exchange plate 15 and the second fan-shaped heat exchange plate 16 can block the high-temperature flue gas, the heat exchange time of the high-temperature flue gas and the fan-shaped heat exchange plates is prolonged, heat is poured into the steam pocket 5 through the heat conduction plate, so that liquid water inside the steam pocket 5 is heated, a large amount of high-temperature steam is generated when a water body reaches a certain temperature, meanwhile, the upper end part of the steam auxiliary heating device 17 is positioned inside the steam pocket 5, the water inside the steam pocket 5 enters the water inlet pipe 23 through the water replenishing port 26 and then is accumulated at the bottom of the water storage pipe 24, meanwhile, the pipe body on the steam auxiliary heating device 17 is made of a high, the water in the water storage pipe 24 is rapidly heated, a large amount of steam is generated after reaching a certain temperature, the steam enters the steam pocket 5 from the steam ascending pipe 22 through the steam outlet 25, the generated steam is matched and enters the steam turbine 6 through the steam exhaust pipe 10, the generator 7 is matched to realize power generation, the steam passing through the steam turbine 7 enters the condenser 20 in the condensation box 8 through the connecting pipe, condensation is performed during the moving process to form liquid water, the liquid water is conveyed to the condensed water inlet pipe 28 through the condensed water exhaust pipe 11 under the pressurization of the water pump and enters the heat exchange spiral pipe 18 through the condensed water inlet pipe, as the heat exchange spiral pipe 18 is positioned at the front end of the waste heat recovery pipe 1, the high-temperature flue gas from the flue gas exhaust pipe 3 is preferentially contacted, and the external high temperature is guided into the pipe body under the heat exchange effect, so as to heat the internal water, finally, the water enters the heat storage cylinder 9 through the hot water inlet pipe 12, and the temperature of the water inside can be known through the thermometer 31 outside the heat storage cylinder 9.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.