CN116358331B - Deep recovery system and recovery method for exhaust gas waste heat of gas steam boiler - Google Patents
Deep recovery system and recovery method for exhaust gas waste heat of gas steam boiler Download PDFInfo
- Publication number
- CN116358331B CN116358331B CN202310277104.6A CN202310277104A CN116358331B CN 116358331 B CN116358331 B CN 116358331B CN 202310277104 A CN202310277104 A CN 202310277104A CN 116358331 B CN116358331 B CN 116358331B
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- shell
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- smoke
- sleeve
- smoke exhaust
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- 239000007789 gas Substances 0.000 title claims abstract description 32
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 239000002918 waste heat Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000000779 smoke Substances 0.000 claims abstract description 93
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000003546 flue gas Substances 0.000 claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 17
- 239000003517 fume Substances 0.000 description 12
- 230000000717 retained effect Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
- F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/02—Non-rotary, e.g. reciprocated, appliances having brushes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/04—Feeding and driving arrangements, e.g. power operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/50—Intercepting solids by cleaning fluids (washers or scrubbers)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Dispersion Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a deep recovery system for exhaust heat of a gas steam boiler, and belongs to the technical field of gas steam boilers. The deep recovery system for the exhaust gas waste heat of the gas steam boiler comprises a shell, a smoke inlet arranged on one side wall of the shell, a smoke outlet arranged on the other side wall of the shell, a heat exchange plate of a hollow structure arranged in an inner cavity of the shell, and a cold water preheating component which extends to the inner cavity of the shell and is communicated with the heat exchange plate; the cleaning component is arranged on the heat exchange plate, and the transmission component is arranged at the bottom of the shell; a smoke exhaust pipe is connected to the smoke exhaust port of the shell, a sleeve is connected to one end of the smoke exhaust pipe far away from the shell in a sliding manner, an L-shaped connecting rod is connected between the sleeve and the transmission assembly, and a guide rail is connected to the horizontal section of the L-shaped connecting rod; the invention realizes the waste heat recovery function of high-temperature flue gas and the purification function of flue gas, and can effectively prevent particles from adhering to the outer wall of the heat exchange plate in the waste heat recovery process, thereby ensuring the waste heat recovery effect.
Description
Technical Field
The invention relates to the technical field of gas steam boilers, in particular to a deep recovery system and a recovery method for exhaust gas waste heat of a gas steam boiler.
Background
The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy.
The gas is a clean energy source, but is not renewable, the gas steam boiler is a steam boiler heated by using gas combustion, the utilization of the gas fuel by the existing gas steam boiler is insufficient, the waste of resources is caused, and a large amount of water vapor generated after the gas combustion is discharged into the air along with high-temperature flue gas, so that the serious waste of energy is caused.
Through retrieving, among the prior art, patent application number is CN201920570239.0, discloses "a gas steam boiler waste heat degree of depth recycle device that discharges fume, which comprises a housin, the casing left side is equipped with into the mouth of cigarette, the casing right side is equipped with out the mouth of cigarette, two of symmetrical fixedly connected with flow distribution plates in the casing, two equal fixedly connected with water pipe of flow distribution plate upper end, be equipped with the control valve on the water pipe, the casing upside is equipped with circulation mechanism, two all seted up the intercommunication chamber in the flow distribution plate, the water pipe lets in the intercommunication intracavity, two the annular chamber has still all been seted up in the flow distribution plate, flow distribution plate and annular chamber intercommunication setting. According to the invention, the control valve is closed, the hot water pump is started, so that water in the water pipe is pumped out to continuously circulate through the circulating pipe, and then repeatedly circulate and absorb heat through the heat collecting pipe, so that the heat absorption stroke of water flow is increased, the heat absorption efficiency is improved, the annular array of the heat collecting pipe is distributed, cold water is enabled to absorb heat more uniformly, the heat absorption speed is improved with the help of the heat collecting wire, and the following defects still exist:
lack of cleaning of particulate matter results in poor stability of the waste heat recovery effect;
the flue gas treatment effect is poor, and the air pollution after the emission is caused.
Disclosure of Invention
The invention aims to solve the problems of poor stability of waste heat recovery effect caused by lack of cleaning of particle attachments in the prior art; the flue gas treatment effect is poor, and the problem of air pollution after the emission is caused, and the flue gas waste heat deep recovery system of the gas steam boiler is provided.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the deep recovery system for the exhaust gas waste heat of the gas steam boiler comprises a shell, a smoke inlet arranged on one side wall of the shell, a smoke outlet arranged on the other side wall of the shell, and a heat exchange plate of a hollow structure arranged in an inner cavity of the shell, wherein a cold water preheating component which extends to the inner cavity of the shell and is communicated with the heat exchange plate is arranged on the outer wall of the shell;
the heat exchange plate is provided with a cleaning component, and the bottom of the shell is provided with a transmission component matched with the cleaning component;
the smoke exhaust pipe is connected to the smoke exhaust port of the shell, one end of the smoke exhaust pipe, which is far away from the shell, is connected with a sleeve in a sliding manner, an L-shaped connecting rod is connected between the sleeve and the transmission assembly, a guide rail is connected to the horizontal section of the L-shaped connecting rod, and a smoke retention adjusting assembly is arranged in the sleeve;
one end of the sleeve, which is far away from the smoke exhaust pipe, is connected with a spray tank, a smoke inlet pipe is arranged at the joint of the spray tank and the smoke exhaust pipe, and the smoke exhaust pipe is connected with the smoke inlet pipe in a sliding manner;
and the exhaust end of the spray tank is connected with a smoke exhausting assembly.
Preferably, the cold water preheating component comprises a water inlet pipe which is arranged on the outer wall of the shell and extends towards the inner cavity of the shell, a communicating pipe is connected between adjacent heat exchange plates, the outlet end of each heat exchange plate is connected with a water return pipe which penetrates through the shell and extends outwards, and the water inlet pipe, the heat exchange plates, the communicating pipe and the water return pipe form a passage.
Preferably, the cleaning component comprises a sliding frame which is connected to the outer wall of the heat exchange plate in a sliding mode, a cleaning bristle layer is arranged on the inner side wall of the sliding frame, a connecting rod is fixedly connected to the outer side wall of the sliding frame, and an iron driven block which is in clearance fit with the inner wall of the bottom of the shell is fixedly connected to the bottom end of the connecting rod.
Preferably, the transmission assembly comprises a transmission box arranged at the bottom of the shell, a sliding groove which is uniformly and obliquely distributed is formed in the bottom of the transmission box, a sliding block is connected in the sliding groove in a sliding mode, a magnet matched with the driven block is fixedly connected to the top of the sliding block, a transmission rod is fixedly connected to the bottom of the sliding block, and the transmission rod is in sliding fit with the guide rail.
Preferably, the fume retention adjusting assembly comprises a gear rotationally connected to the inner side wall of the sleeve, a toothed plate meshed with the gear is arranged at one end, close to the sleeve, of the fume exhaust pipe, a reset assembly is arranged between one end, close to the fume exhaust pipe, of the sleeve and one end, far away from the shell, of the fume exhaust pipe, a hollow baffle is fixedly connected between the gears, a driving negative pressure fan driven by a double-output shaft motor is arranged on the hollow baffle, a hollow cover plate is arranged on one side, far away from the driving negative pressure fan, of the hollow baffle, and the hollow cover plate is arranged at one end, far away from the driving negative pressure fan, of the double-output shaft motor.
Preferably, the reset assembly comprises a telescopic rod fixedly connected between one end of the sleeve close to the smoke exhaust pipe and one end of the smoke exhaust pipe far away from the shell, and a reset spring sleeved on the outer wall of the telescopic rod is fixedly connected between one end of the sleeve close to the smoke exhaust pipe and one end of the smoke exhaust pipe far away from the shell.
Preferably, the top of spray tank is provided with just to the sprinkler head of spray tank inner chamber, the bottom exit of spray tank is connected with the back flow, the one end fixed mounting that the back flow kept away from the spray tank has the header tank, the water pump is installed at the top of header tank, be connected with the outlet pipe between the play water end of water pump and the sprinkler head, the water inlet end of water pump is connected with the drinking-water pipe of arranging in the header tank.
Preferably, the smoke exhaust assembly comprises a negative pressure air box arranged at the smoke exhaust port of the spray tank, an exhaust fan is arranged in the negative pressure air box, and the air outlet end of the negative pressure air box is connected with a discharge pipe.
Preferably, a filter screen plate is installed in the drain pipe.
A recovery method of a flue gas waste heat deep recovery system of a gas steam boiler comprises the following steps:
s1: firstly, high-temperature smoke is introduced into a shell through a smoke inlet, and a double-output-shaft motor driven negative pressure fan is started to drive at the same time, so that the formed negative pressure pulls the high-temperature smoke to move along the inner cavity of the shell towards the direction of a smoke exhaust pipe;
s2: meanwhile, cold water needing waste heat is sent into the heat exchange plates through the water inlet pipe and flows through the plurality of heat exchange plates through the communicating pipe, and high-temperature flue gas retained in the shell at the moment transfers heat to the cold water through the heat exchange plates, so that the cold water is preheated, and flows to a designated position through the water return pipe;
s3: in the process of heat exchange between high-temperature flue gas and liquid in a heat exchange plate of a water inlet pipe, a communicating pipe and a water return pipe, the high-temperature flue gas continuously enters into a sleeve through a smoke exhaust pipe, the fluidity of the high-temperature flue gas and the guidance of a driving negative pressure fan are combined, the flue gas after heat exchange enters into the sleeve, as a hollow cover plate continuously rotates along with the output end of a double-output shaft motor, the hollow cover plate intermittently plugs a hollow baffle, in the process of plugging the hollow baffle by the hollow cover plate, the high-temperature flue gas stays in the sleeve under the guidance of the driving negative pressure fan, the internal air pressure of the hollow cover plate becomes large along with the increase of the high-temperature flue gas stays in the sleeve, at the moment, a reset spring is compressed, the sleeve is driven to slide in a direction away from the smoke exhaust pipe, and then a gear meshed with the sleeve is driven to rotate through a toothed plate, the high-temperature flue gas accumulated after the rotation of the hollow baffle enters into the smoke inlet pipe through a gap, at the moment, and the sleeve is reset under the rebound action of a reset spring, and then the gear is driven to reset, so that the hollow baffle is reset, and the reciprocating movement of the sleeve is realized;
s4: in the process of reciprocating movement of the sleeve, the L-shaped connecting rod drives the guide rail to reciprocate, so that the transmission rod is driven to reciprocate along the sliding groove, further reciprocating movement of the magnet is realized, in the process of reciprocating movement of the magnet, the driven block in the shell is driven to reciprocate through magnetic force, further reciprocating movement of the sliding frame is realized through the connecting rod, further, the function of cleaning the surface of the heat exchange plate by the brush hair layer on the inner side wall of the sliding frame is realized, and particle attachments are prevented from being attached to the outer wall of the heat exchange plate to influence the heat exchange effect;
s5: the water pump is started, water is supplied to the spray head through the water outlet pipe, the smoke entering the spray tank through the smoke inlet pipe is cleaned and purified under the spraying of the spray head, the spray water is converged in the water collecting tank again through the return pipe, and then the purified smoke is discharged through the discharge pipe through the exhaust fan in the negative pressure bellows, so that pollution caused by discharge is reduced.
Compared with the prior art, the invention provides a deep recovery system for exhaust heat of a gas steam boiler, which has the following beneficial effects:
1. this gas steam boiler waste heat degree of depth recovery system that discharges fume, through the cold water preheating component that sets up, in will needing the cold water of waste heat to in the heat exchange plate is passed through to a plurality of heat exchange plates of communicating pipe flow through, the high temperature flue gas that is detained in the casing this moment passes through the heat exchange plate with heat transfer to cold water, realizes the preheating of cold water, and flows to appointed position through the wet return, has realized high temperature flue gas reuse function.
2. This gas steam boiler waste heat degree of depth recovery system that discharges fume through the flue gas that sets up detains the subassembly, has realized the detaining of flue gas, has improved heat exchange plate heat transfer effect.
3. This gas steam boiler waste heat degree of depth recovery system that discharges fume through the flue gas that sets up is detained subassembly and drive assembly and clean subassembly, high temperature flue gas is detained in the sleeve pipe under the guide of drive negative pressure fan, along with the increase of the high temperature flue gas that is detained in the sleeve pipe, its internal air pressure grow, reset spring is compressed this moment, and then drive the sleeve pipe and slide to the direction of keeping away from the fume tube, and then drive rather than meshed gear rotation through the pinion rack, thereby drive fretwork apron rotation back accumulational high temperature flue gas enters into in the fume tube through the gap, the sleeve pipe resets under reset spring's resilience effect this moment, and then drive gear reset, thereby make fretwork apron reset, realize sheathed tube reciprocating motion, in sleeve pipe reciprocating motion's in-process, drive guide rail reciprocating motion through L type connecting rod, and then drive the reciprocating motion of drive transmission rod along the sliding tray, and then realize the reciprocating motion of magnet, in-process of magnet reciprocating motion, and then drive driven piece reciprocating motion in the casing through magnetic force, and then realize the reciprocating motion of sliding frame's inside wall's gear, and the clean brush hair layer of cleaning brush hair layer of heat transfer rotates, the granule has avoided the granule to adhere to the heat transfer plate outer wall to influence the poor stability of heat transfer effect, the problem of the existing technology that has solved the granule waste heat recovery effect.
4. This waste heat degree of depth recovery system that discharges fume of gas steam boiler, spray tank through setting up cooperates with the emission subassembly, discharges the flue gas after will purifying through the exhaust pipe, has reduced the pollution that the emission caused, has solved among the prior art flue gas treatment effect poor, causes the problem of the air pollution after the emission.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a second schematic diagram of the structure of the present invention;
FIG. 3 is a schematic diagram of a front view of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic view of an exploded construction of the sleeve of the present invention;
FIG. 6 is an enlarged schematic view of the portion A of FIG. 5 according to the present invention;
FIG. 7 is a schematic view of the internal structure of the housing of the present invention;
FIG. 8 is a second schematic view of the internal structure of the housing of the present invention;
fig. 9 is a schematic structural view of a smoke evacuation assembly according to the present invention.
In the figure: 10. a housing; 110. a smoke inlet; 120. a smoke exhaust pipe; 20. a heat exchange plate; 210. a cleaning assembly; 211. a sliding frame; 212. a connecting rod; 213. a driven block; 220. a transmission assembly; 221. a transmission case; 222. a sliding groove; 223. a slide block; 224. a magnet; 225. a transmission rod; 230. an L-shaped connecting rod; 240. a guide rail; 30. a cold water preheating assembly; 310. a water inlet pipe; 320. a communicating pipe; 330. a water return pipe; 40. a sleeve; 50. a flue gas retention adjustment assembly; 510. a gear; 520. a toothed plate; 530. a reset assembly; 531. a telescopic rod; 532. a return spring; 540. hollow baffle plates; 550. driving a negative pressure fan; 560. hollow cover plates; 60. a spray tank; 610. a spray head; 620. a return pipe; 630. a water collection tank; 640. a water pump; 650. a water outlet pipe; 660. a water pumping pipe; 670. a smoke inlet pipe; 70. a smoke exhausting assembly; 710. a negative pressure bellows; 720. an exhaust fan; 730. a discharge pipe.
Description of the embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1 to 9, a deep recovery system for exhaust heat of a gas steam boiler comprises a housing 10, a smoke inlet 110 formed in one side wall of the housing 10, a smoke outlet formed in the other side wall of the housing 10, a heat exchange plate 20 installed in a hollow structure in an inner cavity of the housing 10, and a cold water preheating assembly 30 extending to the inner cavity of the housing 10 and communicated with the heat exchange plate 20 installed on the outer wall of the housing 10;
the heat exchange plate 20 is provided with a cleaning component 210, and the bottom of the shell 10 is provided with a transmission component 220 matched with the cleaning component 210;
the smoke exhaust pipe 120 is connected to the smoke exhaust port of the shell 10, one end of the smoke exhaust pipe 120 far away from the shell 10 is connected with the sleeve 40 in a sliding manner, an L-shaped connecting rod 230 is connected between the sleeve 40 and the transmission assembly 220, a guide rail 240 is connected to the horizontal section of the L-shaped connecting rod 230, and a smoke retention and adjustment assembly 50 is arranged in the sleeve 40;
one end of the sleeve 40, which is far away from the smoke exhaust pipe 120, is connected with a spray tank 60, a smoke inlet pipe 670 is arranged at the joint of the spray tank 60 and the smoke exhaust pipe 120, and the smoke exhaust pipe 120 is connected with the smoke inlet pipe 670 in a sliding manner;
the exhaust end of the spray tank 60 is connected to a fume extractor assembly 70.
Referring to fig. 1, 2, 7 and 8, the cold water preheating assembly 30 includes a water inlet pipe 310 installed at an outer wall of the casing 10 and extending toward an inner cavity of the casing 10, a communication pipe 320 is connected between adjacent heat exchange plates 20, an outlet end of each heat exchange plate 20 is connected with a water return pipe 330 extending outward through the casing 10, the water inlet pipe 310, the heat exchange plates 20, the communication pipe 320 and the water return pipe 330 form a passage, first high temperature flue gas is introduced into the casing 10 through a flue inlet 110, and a driving negative pressure fan 550 driven by a double output shaft motor is started, so that the formed negative pressure pulls the high temperature flue gas to move toward the flue gas exhaust 120 along the inner cavity of the casing 10;
meanwhile, cold water requiring waste heat is sent into the heat exchange plates 20 through the water inlet pipe 310 and flows through the plurality of heat exchange plates 20 through the communicating pipe 320, and at the moment, high-temperature flue gas retained in the shell 10 transfers heat to the cold water through the heat exchange plates 20, so that the cold water is preheated, and flows to a designated position through the water return pipe 330.
Referring to fig. 1, 2, 7 and 8, the cleaning assembly 210 includes a sliding frame 211 slidingly connected to the outer wall of the heat exchange plate 20, a cleaning bristle layer is disposed on the inner side wall of the sliding frame 211, a connecting rod 212 is fixedly connected to the outer side wall of the sliding frame 211, an iron driven block 213 is fixedly connected to the bottom end of the connecting rod 212 and is in clearance fit with the inner wall of the bottom of the shell 10, in the process of reciprocating the sleeve 40, the L-shaped connecting rod 230 drives the guide rail 240 to reciprocate, so as to drive the transmission rod 225 to reciprocate along the sliding groove 222, so that the magnet 224 reciprocates, in the process of reciprocating the magnet 224, the driven block 213 in the shell 10 is driven by magnetic force to reciprocate, so that the reciprocating movement of the sliding frame 211 is realized by the connecting rod 212, and further the cleaning bristle layer on the inner side wall of the sliding frame 211 has a surface cleaning function on the heat exchange plate 20, so that the particle attachment is prevented from affecting the heat exchange effect on the outer wall of the heat exchange plate 20.
Referring to fig. 1, 2, 7 and 8, the transmission assembly 220 includes a transmission case 221 installed at the bottom of the housing 10, a uniformly and obliquely distributed sliding groove 222 is formed at the bottom of the transmission case 221, a sliding block 223 is slidably connected in the sliding groove 222, a magnet 224 matched with the driven block 213 is fixedly connected at the top of the sliding block 223, a transmission rod 225 is fixedly connected at the bottom of the sliding block 223, and the transmission rod 225 is slidably matched with the guide rail 240.
Referring to fig. 1, 2, 5 and 6, the smoke retention adjusting assembly 50 includes a gear 510 rotatably connected to an inner sidewall of the sleeve 40, a toothed plate 520 meshed with the gear 510 is disposed at an end of the smoke exhaust pipe 120 close to the sleeve 40, a reset assembly 530 is disposed between an end of the sleeve 40 close to the smoke exhaust pipe 120 and an end of the smoke exhaust pipe 120 far away from the housing 10, a hollow baffle 540 is fixedly connected between the gears 510, a driven negative pressure fan 550 driven by a dual-output shaft motor is mounted on the hollow baffle 540, a hollow cover plate 560 is mounted at a side of the hollow baffle 540 far away from the driven negative pressure fan 550, the hollow cover plate 560 is mounted at an end of the dual-output shaft motor far away from the driven negative pressure fan 550, during heat exchange between high-temperature smoke and liquid in the water return pipe 330 and the heat exchange plate 20 through the water inlet pipe 310 and the communicating pipe 320, the high-temperature smoke continuously enters the sleeve 40 through the smoke exhaust pipe 120, in combination with the fluidity of the high-temperature flue gas and the guidance of the driving negative pressure fan 550, the flue gas after heat exchange enters the sleeve 40, as the hollow cover plate 560 continuously rotates along with the output end of the double-output shaft motor, the hollow cover plate 560 is further caused to intermittently block the hollow baffle 540, the high-temperature flue gas stays in the sleeve 40 under the guidance of the driving negative pressure fan 550 in the process of blocking the hollow baffle 540 by the hollow cover plate 560, the air pressure in the sleeve 40 becomes larger along with the increase of the high-temperature flue gas staying in the sleeve 40, the reset spring 532 is compressed at the moment, the sleeve 40 is further driven to slide in the direction away from the smoke exhaust pipe 120, the toothed plate 520 is further used for driving the gear 510 meshed with the sleeve to rotate, the hollow baffle 540 is driven to rotate, the accumulated high-temperature flue gas after the hollow baffle 540 rotates enters the smoke inlet pipe 670 through a gap, and the sleeve 40 is reset under the action of the rebound force of the reset spring 532 at the moment, and further drives the gear 510 to reset, so that the hollowed-out baffle 540 is reset, and the reciprocating movement of the sleeve 40 is realized.
Referring to fig. 1, 2, 5 and 6, the reset assembly 530 includes a telescopic rod 531 fixedly connected between one end of the sleeve 40 close to the smoke tube 120 and one end of the smoke tube 120 far from the housing 10, and a reset spring 532 sleeved on the outer wall of the telescopic rod 531 is fixedly connected between one end of the sleeve 40 close to the smoke tube 120 and one end of the smoke tube 120 far from the housing 10.
Referring to fig. 1 and 2, a spray head 610 facing an inner cavity of the spray tank 60 is provided at the top of the spray tank 60, a return pipe 620 is connected to an outlet of the bottom of the spray tank 60, a water collecting tank 630 is fixedly installed at one end of the return pipe 620 away from the spray tank 60, a water pump 640 is installed at the top of the water collecting tank 630, a water outlet pipe 650 is connected between a water outlet end of the water pump 640 and the spray head 610, a water suction pipe 660 disposed in the water collecting tank 630 is connected to a water inlet end of the water pump 640, the water pump 640 is started, water is supplied to the spray head 610 through the water outlet pipe 650, flue gas entering the spray tank 60 is cleaned and purified through a smoke inlet pipe 670, the spray water is collected again in the water collecting tank 630 through the return pipe 620, and then the purified flue gas is discharged through a discharge pipe 730 through an exhaust fan 720 in a negative pressure bellows 710, so that pollution caused by discharge is reduced.
Referring to fig. 1, 2 and 9, the smoke exhaust assembly 70 includes a negative pressure bellows 710 installed at a smoke outlet of the spray tank 60, an exhaust fan 720 is installed in the negative pressure bellows 710, and an exhaust pipe 730 is connected to an air outlet end of the negative pressure bellows 710.
Referring to fig. 1, 2 and 9, a filter screen plate is installed in the drain pipe 730.
Firstly, high-temperature smoke is introduced into the shell 10 through the smoke inlet 110, and meanwhile, the negative pressure fan 550 driven by the double-output shaft motor is started, so that the formed negative pressure pulls the high-temperature smoke to move along the inner cavity of the shell 10 towards the smoke exhaust pipe 120;
meanwhile, cold water requiring waste heat is sent into the heat exchange plates 20 through the water inlet pipe 310 and flows through the plurality of heat exchange plates 20 through the communicating pipe 320, and at the moment, high-temperature flue gas retained in the shell 10 transfers heat to the cold water through the heat exchange plates 20, so that the cold water is preheated, and flows to a designated position through the water return pipe 330;
in the process of heat exchange between the high-temperature flue gas flowing through the heat exchange plate 20 of the water inlet pipe 310, the communicating pipe 320 and the liquid in the water return pipe 330, the high-temperature flue gas continuously enters the sleeve 40 through the smoke exhaust pipe 120, the fluidity of the high-temperature flue gas is combined with the guidance of the driving negative pressure fan 550, the flue gas after heat exchange enters the sleeve 40, the hollow cover plate 560 continuously rotates along with the output end of the double-output shaft motor, and then the hollow cover plate 560 intermittently plugs the hollow baffle 540, in the process of plugging the hollow cover plate 560 by the hollow baffle 540, the high-temperature flue gas is retained in the sleeve 40 under the guidance of the driving negative pressure fan 550, the internal air pressure of the high-temperature flue gas is increased along with the increase of the high-temperature flue gas retained in the sleeve 40, at the moment, the reset spring 532 is compressed, the sleeve 40 is driven to slide away from the smoke exhaust pipe 120, the toothed plate 520 is driven to rotate, the hollow baffle 540 is piled up, and the hollow baffle 540 enters the water inlet 670 through a gap, the reset spring 532 is driven to reset under the action of the reset spring, and the hollow baffle 540 is reset, so that the reciprocating movement of the sleeve 40 is realized;
in the process of reciprocating the sleeve 40, the L-shaped connecting rod 230 drives the guide rail 240 to reciprocate, so that the transmission rod 225 is driven to reciprocate along the sliding groove 222, and then the magnet 224 is reciprocated, in the process of reciprocating the magnet 224, the driven block 213 in the shell 10 is driven by magnetic force to reciprocate, and then the connecting rod 212 is used for realizing the reciprocating movement of the sliding frame 211, so that the cleaning brush hair layer on the inner side wall of the sliding frame 211 can clean the surface of the heat exchange plate 20, and the influence of particle attachments on the outer wall of the heat exchange plate 20 is avoided;
the water pump 640 is started, water is supplied to the spray head 610 through the water outlet pipe 650, the smoke entering the spray tank 60 through the smoke inlet pipe 670 is cleaned and purified under the spraying of the spray head 610, the spray water is converged in the water collecting tank 630 again through the return pipe 620, and then the purified smoke is discharged through the discharge pipe 730 through the exhaust fan 720 in the negative pressure bellows 710, so that pollution caused by discharge is reduced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The flue gas waste heat deep recovery system of the gas steam boiler comprises a shell (10), a flue gas inlet (110) formed in one side wall of the shell (10) and a flue gas outlet formed in the other side wall of the shell (10), and is characterized by further comprising a heat exchange plate (20) which is arranged in the inner cavity of the shell (10) and has a hollow structure, wherein a cold water preheating component (30) which extends to the inner cavity of the shell (10) and is communicated with the heat exchange plate (20) is arranged on the outer wall of the shell (10);
a cleaning assembly (210) is arranged on the heat exchange plate (20), and a transmission assembly (220) matched with the cleaning assembly (210) is arranged at the bottom of the shell (10);
the smoke exhaust pipe (120) is connected to the smoke exhaust port of the shell (10), one end, far away from the shell (10), of the smoke exhaust pipe (120) is connected with the sleeve (40) in a sliding mode, an L-shaped connecting rod (230) is connected between the sleeve (40) and the transmission assembly (220), a guide rail (240) is connected to the horizontal section of the L-shaped connecting rod (230), and a smoke retention and adjustment assembly (50) is arranged in the sleeve (40);
one end of the sleeve (40) far away from the smoke exhaust pipe (120) is connected with a spray tank (60), a smoke inlet pipe (670) is arranged at the joint of the spray tank (60) and the smoke exhaust pipe (120), and the smoke exhaust pipe (120) is connected with the smoke inlet pipe (670) in a sliding manner;
the exhaust end of the spray tank (60) is connected with a smoke exhaust component (70);
the cold water preheating assembly (30) comprises a water inlet pipe (310) which is arranged on the outer wall of the shell (10) and extends towards the inner cavity of the shell (10), a communicating pipe (320) is connected between adjacent heat exchange plates (20), the outlet end of each heat exchange plate (20) is connected with a water return pipe (330) which penetrates through the shell (10) and extends outwards, and the water inlet pipe (310), the heat exchange plates (20), the communicating pipe (320) and the water return pipe (330) form a passage;
the cleaning assembly (210) comprises a sliding frame (211) which is connected to the outer wall of the heat exchange plate (20) in a sliding mode, a cleaning bristle layer is arranged on the inner side wall of the sliding frame (211), a connecting rod (212) is fixedly connected to the outer side wall of the sliding frame (211), and an iron driven block (213) which is in clearance fit with the inner wall of the bottom of the shell (10) is fixedly connected to the bottom end of the connecting rod (212);
the transmission assembly (220) comprises a transmission box (221) arranged at the bottom of the shell (10), sliding grooves (222) which are uniformly and obliquely distributed are formed in the bottom of the transmission box (221), sliding blocks (223) are connected in a sliding mode in the sliding grooves (222), magnets (224) matched with the driven blocks (213) are fixedly connected to the tops of the sliding blocks (223), transmission rods (225) are fixedly connected to the bottoms of the sliding blocks (223), and the transmission rods (225) are in sliding fit with the guide rails (240);
the smoke detention adjusting assembly (50) comprises a gear (510) rotationally connected to the inner side wall of the sleeve (40), a toothed plate (520) meshed with the gear (510) is arranged at one end, close to the sleeve (40), of the smoke exhaust pipe (120), a reset assembly (530) is arranged between one end, close to the smoke exhaust pipe (120), of the sleeve (40) and one end, far away from the shell (10), of the smoke exhaust pipe (120), a hollowed-out baffle (540) is fixedly connected between the gears (510), a driving negative pressure fan (550) driven by a double-output shaft motor is arranged on the hollowed-out baffle (540), a hollowed-out cover plate (560) is arranged at one side, far away from the driving negative pressure fan (550), of the hollowed-out baffle (540), and the hollowed-out cover plate (560) is arranged at one end, far away from the driving negative pressure fan (550), of the double-output shaft motor;
the reset component (530) comprises a telescopic rod (531) fixedly connected between one end of the sleeve (40) close to the smoke exhaust pipe (120) and one end of the smoke exhaust pipe (120) far away from the shell (10), and a reset spring (532) sleeved on the outer wall of the telescopic rod (531) is fixedly connected between one end of the sleeve (40) close to the smoke exhaust pipe (120) and one end of the smoke exhaust pipe (120) far away from the shell (10).
2. The flue gas waste heat deep recovery system of a gas steam boiler according to claim 1, wherein a spray head (610) facing an inner cavity of the spray tank (60) is arranged at the top of the spray tank (60), a return pipe (620) is connected at the bottom outlet of the spray tank (60), a water collecting tank (630) is fixedly arranged at one end, far away from the spray tank (60), of the return pipe (620), a water pump (640) is arranged at the top of the water collecting tank (630), a water outlet pipe (650) is connected between the water outlet end of the water pump (640) and the spray head (610), and a water suction pipe (660) arranged in the water collecting tank (630) is connected at the water inlet end of the water pump (640).
3. The deep recovery system for exhaust heat of a gas-fired steam boiler according to claim 1, wherein the exhaust gas assembly (70) comprises a negative pressure air box (710) installed at a smoke outlet of the spray tank (60), an exhaust fan (720) is installed in the negative pressure air box (710), and an exhaust pipe (730) is connected to an air outlet end of the negative pressure air box (710).
4. A deep flue gas waste heat recovery system for a gas steam boiler according to claim 3, wherein a filter screen is installed in the exhaust pipe (730).
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| CN202310277104.6A CN116358331B (en) | 2023-03-21 | 2023-03-21 | Deep recovery system and recovery method for exhaust gas waste heat of gas steam boiler |
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| CN202310277104.6A CN116358331B (en) | 2023-03-21 | 2023-03-21 | Deep recovery system and recovery method for exhaust gas waste heat of gas steam boiler |
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| CN116358331B true CN116358331B (en) | 2023-10-03 |
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| GB2105834A (en) * | 1981-04-13 | 1983-03-30 | Bruce Robert Mace | Heating feedwater |
| CN207221640U (en) * | 2017-09-09 | 2018-04-13 | 江苏瑞鼎环境工程有限公司 | Water-soluble organic exhaust gas buffer unit |
| CN210198148U (en) * | 2019-04-25 | 2020-03-27 | 福建省新元能源发展有限公司 | Deep recycling device for exhaust smoke waste heat of gas steam boiler |
| CN215572315U (en) * | 2021-08-26 | 2022-01-18 | 江苏博格锅炉设备有限公司 | Easy-to-maintain flue gas waste heat recoverer for boiler |
| CN114278957A (en) * | 2021-12-28 | 2022-04-05 | 江西方德能源环境工程有限公司 | Flue gas waste heat recovery system for industrial gas boiler |
| CN115234933A (en) * | 2022-06-06 | 2022-10-25 | 江苏瑞鼎环境工程有限公司 | Smoke exhaust waste heat recycling device for gas steam boiler and utilization method thereof |
| CN217724974U (en) * | 2022-06-10 | 2022-11-04 | 江苏科诺锅炉有限公司 | Recovery unit for boiler afterbody heat of discharging fume |
| CN115371467A (en) * | 2022-08-09 | 2022-11-22 | 重庆富燃科技股份有限公司 | Flue gas waste heat recovery system of oxygen-enriched combustion boiler |
-
2023
- 2023-03-21 CN CN202310277104.6A patent/CN116358331B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2105834A (en) * | 1981-04-13 | 1983-03-30 | Bruce Robert Mace | Heating feedwater |
| CN207221640U (en) * | 2017-09-09 | 2018-04-13 | 江苏瑞鼎环境工程有限公司 | Water-soluble organic exhaust gas buffer unit |
| CN210198148U (en) * | 2019-04-25 | 2020-03-27 | 福建省新元能源发展有限公司 | Deep recycling device for exhaust smoke waste heat of gas steam boiler |
| CN215572315U (en) * | 2021-08-26 | 2022-01-18 | 江苏博格锅炉设备有限公司 | Easy-to-maintain flue gas waste heat recoverer for boiler |
| CN114278957A (en) * | 2021-12-28 | 2022-04-05 | 江西方德能源环境工程有限公司 | Flue gas waste heat recovery system for industrial gas boiler |
| CN115234933A (en) * | 2022-06-06 | 2022-10-25 | 江苏瑞鼎环境工程有限公司 | Smoke exhaust waste heat recycling device for gas steam boiler and utilization method thereof |
| CN217724974U (en) * | 2022-06-10 | 2022-11-04 | 江苏科诺锅炉有限公司 | Recovery unit for boiler afterbody heat of discharging fume |
| CN115371467A (en) * | 2022-08-09 | 2022-11-22 | 重庆富燃科技股份有限公司 | Flue gas waste heat recovery system of oxygen-enriched combustion boiler |
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|---|---|
| CN116358331A (en) | 2023-06-30 |
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