CN114508765B - Combined high-efficiency air preheater and preheating method thereof - Google Patents
Combined high-efficiency air preheater and preheating method thereof Download PDFInfo
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- CN114508765B CN114508765B CN202210140630.3A CN202210140630A CN114508765B CN 114508765 B CN114508765 B CN 114508765B CN 202210140630 A CN202210140630 A CN 202210140630A CN 114508765 B CN114508765 B CN 114508765B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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- 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
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
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- 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
- F28G7/00—Cleaning by vibration or pressure waves
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- 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
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a combined high-efficiency air preheater and a preheating method thereof, belonging to the technical field of air preheaters.
Description
Technical Field
The invention relates to an air preheater, in particular to a combined high-efficiency air preheater, and also relates to a preheating method of the air preheater, in particular to a preheating method of the combined high-efficiency air preheater, belonging to the technical field of air preheaters.
Background
The air preheater is a heat exchanger that preheats exhaust heat of a boiler or the like.
The device has the functions of reducing the exhaust gas temperature of equipment such as a boiler and the like, improving the heat efficiency, enabling the fuel to be easy to catch fire, stabilizing the combustion and improving the combustion efficiency.
The prior art has the following problems when using an air preheater:
1. the shell structure design of the air preheater is not reasonable and cannot achieve the function of automatic circulating preheating, and the shell structure is often a one-way cylinder structure;
2. the filtering structure of the air preheater in the prior art has no good cleaning structure capable of saving energy, so that energy is wasted;
3. in the prior art, when the air preheater is cleaned, the cleaning solution cannot efficiently clean the inner wall of the air preheater;
therefore, the combined high-efficiency air preheater and the preheating method thereof are designed to optimize the problems.
Disclosure of Invention
The invention mainly aims to provide a combined high-efficiency air preheater and a preheating method thereof, wherein gas or liquid needing preheating treatment is introduced into a spiral preheating inlet pipe and is sealed by a valve, high-temperature smoke discharged from a boiler is connected by a connecting disc, the high-temperature smoke enters a hollow oval heat exchange bin through an extension pipe and an air guide pipe, the high-temperature smoke flows in the hollow oval heat exchange bin after entering the hollow oval heat exchange bin and reaches a first trapezoidal plate, then the first valve and a second valve are opened and the valve leading to a filter bin is closed if the temperature detected by a first temperature sensor arranged on the first trapezoidal plate is higher than that detected by a second temperature sensor arranged at the tail part of the spiral preheating inlet pipe, and then the smoke circulates through the second valve for one turn, when the temperature difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor is not large, the first valve is opened to close the second valve and open the valve to enable smoke to be filtered through a filter screen on the filter bin, gas is synchronously driven to drive the fan blades to rotate when high-temperature smoke passes through the gas guide tube, the gas drives the fan blades to adjust the first linkage rotating rod to drive the driving I-shaped wheel to rotate, the driving I-shaped wheel drives the conveying belt to move, so that the driven I-shaped wheel is driven to rotate, the driven I-shaped wheel adjusts the second linkage rotating rod to rotate, so that the hinge rod is adjusted to move, the cleaning head is driven by the hinge rod to move back and forth on one side of the filter screen to clean, when the interior of the hollow oval heat exchange bin needs to be cleaned, cleaning liquid is filled through the gas guide tube, then the vibration motor is started to drive the special-shaped wheel to adjust the vibration of the hollow oval heat exchange bin, so that the cleaning strength is improved, then discharged through the liquid outlet valve.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides a modular high efficiency air heater, includes the oval storehouse of transferring heat of cavity, the support frame is installed to the inside equidistant of the oval storehouse of transferring heat of cavity to run through on the support frame and be equipped with the leading-in spiral shell frame subassembly of air, the leading-in spiral shell frame subassembly input of this air and output all run through the oval storehouse of transferring heat of cavity, the leading-in connecting tube subassembly of high temperature smog is installed to one side at the oval storehouse top of cavity, and the inboard of the leading-in connecting tube subassembly of this high temperature smog is equipped with wind-force drive flabellum subassembly, the inside department of the oval storehouse of transferring heat of cavity is equipped with first trapezoidal plate subassembly and second trapezoidal plate subassembly, and constitutes gaseous buffering storehouse structure and passes through the filter screen subassembly between first trapezoidal plate subassembly and the second trapezoidal plate subassembly, the top department of filter screen subassembly is equipped with linkage clearance pole subassembly, wind-force drive flabellum subassembly with be equipped with transmission I-shaped wheel disc subassembly between the linkage clearance pole subassembly, the lateral part in the oval storehouse of shaking of cavity is equipped with the frame subassembly, installs the oval storehouse of transferring heat on this support frame subassembly, just the middle part in the oval storehouse of transferring heat of cavity be equipped with oval heat of transferring heat of cavity.
Preferably, the leading-in spiral frame subassembly of air includes that the spiral preheats induction pipe and U type frame, the spiral preheats the inside that the induction pipe is located the oval heat transfer storehouse of cavity and follows with helical structure the oval heat transfer storehouse axis of cavity distributes, just the both ends that the induction pipe was preheated to the spiral run through the oval heat transfer storehouse of cavity, the induction pipe is preheated to the spiral runs through the oval heat transfer storehouse of cavity position department outside cover is equipped with U type frame, and the tip intercommunication has the valve.
Preferably, the high-temperature smoke leading-in connecting pipe assembly comprises a telescopic pipe, a connecting disc and an air guide pipe, the air guide pipe is communicated with one side of the top of the hollow oval heat exchange bin, the telescopic pipe is communicated with the top of the air guide pipe, the connecting disc is communicated with the top of the telescopic pipe, and a wind power driving fan blade assembly is arranged in the air guide pipe.
Preferably, the wind-driven fan blade assembly comprises a gas-driven fan blade, a first linkage rotating rod and a first rotating rod supporting frame, the first rotating rod supporting frame is installed on one side of the top of the hollow oval heat exchange bin, the first linkage rotating rod penetrates through the first rotating rod supporting frame, one end of the first linkage rotating rod is inserted into the air guide tube and is provided with the gas-driven fan blade, and the other end of the first linkage rotating rod is provided with a transmission I-shaped wheel disc assembly.
Preferably, the transmission i-shaped wheel disc assembly comprises an active i-shaped wheel, a conveying belt and a driven i-shaped wheel, the active i-shaped wheel is installed at one end, away from the gas driving fan blades, of the first linkage rotating rod, the conveying belt is sleeved on the outer side of the active i-shaped wheel, the driven i-shaped wheel is arranged at the inner bottom of the conveying belt, and the linkage cleaning rod assembly is installed in the middle of one side of the driven i-shaped wheel.
Preferably, the inside one end department in cavity oval heat transfer storehouse installs first trapezoidal board and second trapezoidal board respectively, the pyramis intercommunication of first trapezoidal board has first valve, the pyramis intercommunication of second trapezoidal board has the second valve, is located on the cavity oval heat transfer storehouse and is in the intercommunication has the filter screen subassembly between second trapezoidal board and the first trapezoidal board.
Preferably, the filter screen subassembly is including filtering storehouse and filter screen, filter the storehouse with the oval heat transfer storehouse of cavity intercommunication is located between second trapezoidal board and the first trapezoidal board, the inside equidistant filter screen that is equipped with in filtration storehouse, one side of filter screen is equipped with linkage clearance pole subassembly.
Preferably, linkage clearance pole subassembly includes second bull stick support frame, second linkage bull stick and U type frame, the second bull stick support frame is installed filter bin's top one side department, just run through on the second bull stick support frame and be equipped with the second linkage bull stick, just the second linkage bull stick protrusion has U type frame, and it has the hinge bar to articulate on this U type frame, the hinge bar runs through filter bin articulates there is the clearance head, the first one side of clearance with the filter screen contact.
Preferably, the vibration frame assembly comprises a base, a support base plate, an L-shaped side frame, a vibration spring and a limiting cylinder, wherein support legs are arranged on two sides of the top of the base, the support base plate is arranged on the tops of the support legs, the L-shaped side frame is arranged on one side of the top of the support base plate, the limiting cylinder is arranged on the inner top of the L-shaped side frame, the vibration spring is sleeved on the outer side of the limiting cylinder, a hollow oval heat exchange bin is arranged at the bottom of the limiting cylinder, and the vibration motor assembly matched with the hollow oval heat exchange bin is arranged on the top of the support base plate;
the vibrating motor component comprises a vibrating motor and a special-shaped wheel, the vibrating motor is installed at the top of the supporting base plate, the special-shaped wheel is installed at the output end of the vibrating motor, and the special-shaped wheel is in contact with the hollow oval heat exchange bin.
A preheating method of a combined high-efficiency air preheater comprises the following steps:
step 1: introducing gas or liquid to be preheated into the spiral preheating introduction pipe, and sealing the spiral preheating introduction pipe through a valve;
step 2: high-temperature smoke exhausted from the boiler is connected through the connecting disc, and the high-temperature smoke enters the hollow oval heat exchange bin through the telescopic pipe and the air guide pipe;
and step 3: after entering the hollow oval heat exchange bin, high-temperature smoke flows in the hollow oval heat exchange bin and reaches the first trapezoidal plate, then the first valve and the second valve are opened and the valve leading to the filter bin is closed if the temperature detected by the first temperature sensor arranged on the first trapezoidal plate is higher than that detected by the second temperature sensor arranged at the tail part of the spiral preheating lead-in pipe, and then the smoke circulates through the second valve and goes round again;
and 4, step 4: when the difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor is not large, the first valve is opened to close the second valve, and the valve is opened to enable smoke to pass through a filter screen on the filter bin for filtering;
and 5: when high-temperature smoke passes through the air guide pipe, the gas is synchronously driven to drive the fan blades to rotate, the first linkage rotating rod is adjusted through the gas driven fan blades to drive the driving I-shaped wheel to rotate, and the driving I-shaped wheel drives the conveying belt to move so as to drive the driven I-shaped wheel to rotate;
and 6: the second linkage rotating rod is adjusted to rotate through the driven I-shaped wheel, so that the hinge rod is adjusted to move, and the cleaning head is driven by the hinge rod to move back and forth on one side of the filter screen for cleaning;
and 7: when the interior of the hollow oval heat exchange bin needs to be cleaned, cleaning liquid is poured in through the air guide pipe, then the vibration motor is started to drive the special-shaped wheel to adjust the hollow oval heat exchange bin to vibrate, so that the cleaning strength is improved, and then the cleaning liquid is discharged through the liquid outlet valve.
The invention has the beneficial technical effects that:
the invention provides a combined high-efficiency air preheater and a preheating method thereof, which are characterized in that gas or liquid to be preheated is introduced into a spiral preheating inlet pipe, the gas or the liquid is sealed by a valve, high-temperature smoke discharged from a boiler is connected by a connecting disc, the high-temperature smoke enters a hollow elliptic heat exchange bin through an extension pipe and an air guide pipe, the high-temperature smoke flows in the hollow elliptic heat exchange bin after entering the hollow elliptic heat exchange bin and reaches a first trapezoidal plate, then the first valve and a second valve are opened and the valve leading to a filter bin is closed if the temperature detected by a first temperature sensor arranged on the first trapezoidal plate is higher than that detected by a second temperature sensor arranged at the tail part of the spiral preheating inlet pipe, and then the smoke circulates through the second valve for one turn, when the temperature difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor is not large, the first valve is opened to close the second valve and open the valve to enable smoke to be filtered through a filter screen on the filter bin, gas is synchronously driven to drive the fan blades to rotate when high-temperature smoke passes through the gas guide tube, the gas drives the fan blades to adjust the first linkage rotating rod to drive the driving I-shaped wheel to rotate, the driving I-shaped wheel drives the conveying belt to move, so that the driven I-shaped wheel is driven to rotate, the driven I-shaped wheel adjusts the second linkage rotating rod to rotate, so that the hinge rod is adjusted to move, the cleaning head is driven by the hinge rod to move back and forth on one side of the filter screen to clean, when the interior of the hollow oval heat exchange bin needs to be cleaned, cleaning liquid is filled through the gas guide tube, then the vibration motor is started to drive the special-shaped wheel to adjust the vibration of the hollow oval heat exchange bin, so that the cleaning strength is improved, then discharged through the liquid outlet valve.
Drawings
FIG. 1 is a side cross-sectional view of the apparatus of a preferred embodiment of a combined high efficiency air preheater and method of preheating the same according to the present invention;
FIG. 2 is a schematic view of the combined cleaning rod assembly, filter cartridge assembly and drum transfer assembly of a preferred embodiment of a combined high efficiency air preheater and method of preheating thereof in accordance with the present invention;
FIG. 3 is a schematic diagram of the combined shock frame assembly, circulation heat exchange bin assembly, air coil assembly, shock assembly, air distribution valve assembly and fan blade transfer assembly of a preferred embodiment of a combined high efficiency air preheater and method of preheating thereof according to the present invention;
FIG. 4 is an enlarged view of a preferred embodiment of a combined high efficiency air preheater and method of preheating thereof according to the present invention at structure a;
FIG. 5 is a schematic view of the shock frame assembly and shock assembly combination of a preferred embodiment of a combined high efficiency air preheater and method of preheating thereof according to the present invention;
FIG. 6 is a schematic view of the combined structure of the circulation heat exchange bin assembly, the air coil assembly and the air distribution valve assembly of a preferred embodiment of the combined high-efficiency air preheater and the preheating method thereof according to the present invention.
In the figure: 1-hollow oval heat exchange bin, 2-L-shaped side frame, 3-vibrating spring, 4-limiting cylinder, 5-telescopic pipe, 6-connecting disc, 7-first linkage rotating rod, 8-first rotating rod supporting frame, 9-air guide pipe, 10-air driving fan blade, 11-driving I-shaped wheel, 12-conveying belt, 13-driven I-shaped wheel, 14-filtering bin, 15-filtering screen, 16-second rotating rod supporting frame, 17-second linkage rotating rod, 18-hinging rod, 19-spiral preheating leading-in pipe, 20-supporting frame, 21-U-shaped frame, 22-liquid outlet valve, 23-first trapezoidal plate, 24-first valve, 25-second trapezoidal plate, 26-second valve, 27-base, 28-cleaning head, 29-supporting bottom plate, 30-vibrating motor, 31-special-shaped wheel and 32-supporting leg.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1-6, the combined high efficiency air preheater provided in this embodiment includes a hollow oval heat exchange chamber 1, support frames 20 are installed inside the hollow oval heat exchange chamber 1 at equal intervals, and an air-guiding screw frame assembly is installed on the support frames 20 in a penetrating manner, an input end and an output end of the air-guiding screw frame assembly both penetrate through the hollow oval heat exchange chamber 1, a high temperature smoke-guiding connection pipe assembly is installed at one side of the top of the hollow oval heat exchange chamber 1, a wind-driven fan blade assembly is installed at an inner side of the high temperature smoke-guiding connection pipe assembly, a first ladder-shaped plate assembly and a second ladder-shaped plate assembly are installed at an inner side of the hollow oval heat exchange chamber 1, an air buffer chamber structure is formed between the first ladder-shaped plate assembly and the second ladder-shaped plate assembly and is connected to pass through a filter screen assembly, a linkage cleaning rod assembly is installed at the top of the filter screen assembly, a transmission i-shaped wheel disc assembly is installed between the wind-driven fan blade assembly and the linkage cleaning rod assembly, a vibration frame assembly is installed at a side of the hollow oval heat exchange chamber 1, a vibration frame assembly is installed at a middle portion of the hollow oval heat exchange chamber 1.
The gas or liquid to be preheated is led into the spiral preheating leading-in pipe 19, the gas or liquid is sealed through a valve, high-temperature smoke exhausted from a boiler is connected through the connecting disc 6, the high-temperature smoke enters the hollow oval heat exchange bin 1 through the telescopic pipe 5 and the air guide pipe 9, the high-temperature smoke flows in the hollow oval heat exchange bin 1 after entering the hollow oval heat exchange bin 1 and reaches the first trapezoidal plate 23, then the first valve 24 and the second valve 26 are opened and the valve leading to the filter bin 14 is closed if the temperature detected by the first temperature sensor arranged on the first trapezoidal plate 23 is higher than the temperature detected by the second temperature sensor arranged at the tail part of the spiral preheating leading-in pipe 19, the smoke circulates through the second valve 26 for a circle, when the temperature detected by the first temperature sensor is not different from the temperature detected by the second temperature sensor, the first valve 24 is opened, the second valve 26 is closed and the valve is opened to enable the smoke to pass through the filter screen 15 on the filter bin 14 for filtering, when the high-temperature smoke passes through the rotation of the first temperature sensor, the gas drives the cleaning gas to synchronously drive the cleaning and the air, the cleaning device 10, the cleaning rod drives the heat exchange rod to move through the heat exchange wheel 13, the heat exchange wheel 13 is driven by the heat exchange wheel, the heat exchange wheel 13, the heat exchange wheel 12 is driven by the heat exchange wheel, the heat exchange wheel 12, and then discharged through the outlet valve 22.
In this embodiment, the leading-in spiral frame subassembly of air includes that the spiral preheats inlet tube 19 and U type frame 21, and the spiral preheats the inlet tube 19 and is located the inside of cavity oval heat transfer storehouse 1 and distributes along cavity oval heat transfer storehouse 1 axis with helical structure, and the both ends that the spiral preheats inlet tube 19 run through cavity oval heat transfer storehouse 1, and the spiral preheats inlet tube 19 and runs through cavity oval heat transfer storehouse 1 position department outside cover and be equipped with U type frame 21, and the tip intercommunication has the valve.
In this embodiment, the high-temperature smoke introduction connecting pipe assembly comprises a telescopic pipe 5, a connecting disc 6 and an air duct 9, the air duct 9 is communicated with one side of the top of the hollow oval heat exchange bin 1, the telescopic pipe 5 is communicated with the top of the air duct 9, the connecting disc 6 is communicated with the top of the telescopic pipe 5, and a wind power driving fan blade assembly is arranged in the air duct 9.
In this embodiment, the wind-driven fan blade assembly includes a gas-driven fan blade 10, a first linkage rotating rod 7 and a first rotating rod support frame 8, the first rotating rod support frame 8 is installed on one side of the top of the hollow oval heat exchange bin 1, the first linkage rotating rod 7 is arranged on the first rotating rod support frame 8 in a penetrating mode, one end of the first linkage rotating rod 7 is inserted into the air duct 9 and is provided with the gas-driven fan blade 10, and the other end of the first linkage rotating rod 7 is provided with a transmission I-shaped wheel disc assembly.
In this embodiment, the driving drum assembly includes a driving drum 11, a transmission belt 12 and a driven drum 13, the driving drum 11 is installed at one end of the first linking rotating rod 7 away from the gas driving fan blade 10, the transmission belt 12 is sleeved outside the driving drum 11, the driven drum 13 is installed at the inner bottom of the transmission belt 12, and the linking cleaning rod assembly is installed at the middle of one side of the driven drum 13.
In this embodiment, a first step plate 23 and a second step plate 25 are respectively installed at one end of the inside of the hollow oval heat exchange bin 1, a first valve 24 is communicated with a cone portion of the first step plate 23, a second valve 26 is communicated with a cone portion of the second step plate 25, and a filter screen assembly is communicated between the second step plate 25 and the first step plate 23 and positioned on the hollow oval heat exchange bin 1.
In this embodiment, the filter screen subassembly includes filter bin 14 and filter screen 15, filter bin 14 and the intercommunication of hollow oval heat transfer bin 1 and lie in between second trapezoidal board 25 and the first trapezoidal board 23, and the inside equidistant filter screen 15 that is equipped with of filter bin 14, one side of filter screen 15 are equipped with linkage clearance pole subassembly.
In this embodiment, linkage clearance pole subassembly includes second bull stick support frame 16, second linkage bull stick 17 and U type frame, and second bull stick support frame 16 installs in the top one side department of filter bin 14, and runs through on the second bull stick support frame 16 and be equipped with second linkage bull stick 17, and the protrusion of second linkage bull stick 17 has U type frame, and it has articulated hinge bar 18 to go up articulated on this U type frame, and articulated hinge bar 18 has clearance head 28 through filter bin 14, and one side and the filter screen 15 contact of clearance head 28.
In the embodiment, the vibration frame assembly comprises a base 27, a support base plate 29, an L-shaped side frame 2, a vibration spring 3 and a limiting cylinder 4, wherein support legs 32 are installed at two sides of the top of the base 27, the support base plate 29 is installed at the top of each support leg 32, the limiting cylinder 4 is installed at the inner top of the L-shaped side frame 2,L type side frame 2 installed at one side of the top of the support base plate 29, the vibration spring 3 is sleeved outside the limiting cylinder 4, a hollow oval heat exchange bin 1 is installed at the bottom of the limiting cylinder 4, and a vibration motor assembly matched with the hollow oval heat exchange bin 1 is installed at the top of the support base plate 29;
the vibration motor assembly comprises a vibration motor 30 and a special-shaped wheel 31, the vibration motor 30 is installed at the top of the supporting base plate 29, the special-shaped wheel 31 is installed at the output end of the vibration motor 30, and the special-shaped wheel 31 is in contact with the hollow oval heat exchange bin 1.
A preheating method of a combined high-efficiency air preheater comprises the following steps:
step 1: introducing gas or liquid to be preheated into the spiral preheating introducing pipe 19, and sealing the gas or liquid through a valve;
step 2: high-temperature smoke discharged from the boiler is connected through the connecting disc 6, and the high-temperature smoke enters the hollow oval heat exchange bin 1 through the telescopic pipe 5 and the air duct 9;
and step 3: after entering the hollow oval heat exchange bin 1, the high-temperature smoke flows in the hollow oval heat exchange bin 1 and reaches the first trapezoidal plate 23, then the first valve 24 and the second valve 26 are opened and the valve leading to the filter bin 14 is closed if the temperature detected by the first temperature sensor arranged on the first trapezoidal plate 23 is higher than that detected by the second temperature sensor arranged at the tail part of the spiral preheating inlet pipe 19, and then the smoke circulates through the second valve 26 and turns again;
and 4, step 4: when the difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor is not large, the first valve 24 is opened, the second valve 26 is closed, and the valve is opened, so that the smoke passes through the filter screen 15 on the filter bin 14 for filtering;
and 5: synchronously driving gas to drive the fan blades 10 to rotate when high-temperature smoke passes through the gas guide pipe 9, adjusting the first linkage rotating rod 7 through the gas driving fan blades 10 to drive the driving die wheel 11 to rotate, and driving the conveying belt 12 to move through the driving die wheel 11 so as to drive the driven die wheel 13 to rotate;
step 6: the rotation of the second linkage rotating rod 17 is adjusted through the driven I-shaped wheel 13, the movement of the hinge rod 18 is further adjusted, and the cleaning head 28 is driven by the hinge rod 18 to move back and forth on one side of the filter screen 15 for cleaning;
and 7: when the interior of the hollow oval heat exchange bin 1 needs to be cleaned, cleaning liquid is poured in through the air guide pipe 9, then the vibration motor 30 is started to drive the special-shaped wheel 31 to adjust the vibration of the hollow oval heat exchange bin 1 so as to improve the cleaning strength, and then the cleaning liquid is discharged through the liquid outlet valve 22.
The above are only further embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its concept within the scope of the present invention.
Claims (3)
1. The utility model provides a modular high efficiency air heater which characterized in that: the air-cooling type heat exchange device comprises a hollow oval heat exchange bin (1), wherein support frames (20) are installed in the hollow oval heat exchange bin (1) at equal intervals, an air leading-in spiral frame assembly penetrates through the support frames (20), the input end and the output end of the air leading-in spiral frame assembly penetrate through the hollow oval heat exchange bin (1), a high-temperature smoke leading-in connecting pipe assembly is installed on one side of the top of the hollow oval heat exchange bin (1), a wind power driving fan blade assembly is arranged on the inner side of the high-temperature smoke leading-in connecting pipe assembly, a first ladder-shaped plate assembly and a second ladder-shaped plate assembly are arranged on the inner side of the hollow oval heat exchange bin (1), an air buffer bin structure is formed between the first ladder-shaped plate assembly and the second ladder-shaped plate assembly and is connected with a filter screen assembly in a connected mode, a linkage cleaning rod assembly is arranged on the top of the filter screen assembly, a transmission type wheel disc assembly is arranged between the driving fan blade assembly and the linkage cleaning rod assembly, a vibration frame assembly is arranged on the side of the hollow oval heat exchange bin (1), the vibration frame assembly is installed on the vibration type heat exchange bin (1), and a motor matched with the oval heat exchange bin (1);
the air leading-in spiral frame assembly comprises a spiral preheating leading-in pipe (19) and a U-shaped frame (21), the spiral preheating leading-in pipe (19) is located inside the hollow oval heat exchange bin (1) and distributed along the central axis of the hollow oval heat exchange bin (1) in a spiral structure, two ends of the spiral preheating leading-in pipe (19) penetrate through the hollow oval heat exchange bin (1), the U-shaped frame (21) is sleeved on the outer side of the position, where the spiral preheating leading-in pipe (19) penetrates through the hollow oval heat exchange bin (1), and the end part of the spiral preheating leading-in pipe is communicated with a valve;
the high-temperature smoke leading-in connecting pipe assembly comprises a telescopic pipe (5), a connecting disc (6) and an air guide pipe (9), the air guide pipe (9) is communicated with one side of the top of the hollow oval heat exchange bin (1), the telescopic pipe (5) is communicated with the top of the air guide pipe (9), the connecting disc (6) is communicated with the top of the telescopic pipe (5), and a wind power driving fan blade assembly is arranged in the air guide pipe (9);
the wind power driving fan blade assembly comprises a gas driving fan blade (10), a first linkage rotating rod (7) and a first rotating rod supporting frame (8), the first rotating rod supporting frame (8) is installed on one side of the top of the hollow oval heat exchange bin (1), a first linkage rotating rod (7) penetrates through the first rotating rod supporting frame (8), one end of the first linkage rotating rod (7) is inserted into the gas guide pipe (9) and is provided with the gas driving fan blade (10), and the other end of the first linkage rotating rod (7) is provided with a transmission I-shaped wheel disc assembly;
the transmission I-shaped wheel disc assembly comprises a driving I-shaped wheel (11), a conveying belt (12) and a driven I-shaped wheel (13), wherein the driving I-shaped wheel (11) is installed at one end, away from the gas driving fan blade (10), of the first linkage rotating rod (7), the conveying belt (12) is sleeved on the outer side of the driving I-shaped wheel (11), the driven I-shaped wheel (13) is arranged at the inner bottom of the conveying belt (12), and the linkage cleaning rod assembly is installed in the middle of one side of the driven I-shaped wheel (13);
a first trapezoid plate (23) and a second trapezoid plate (25) are respectively arranged at one end of the interior of the hollow oval heat exchange bin (1), a first valve (24) is communicated with a conical part of the first trapezoid plate (23), a second valve (26) is communicated with a conical part of the second trapezoid plate (25), and a filter screen assembly is communicated between the second trapezoid plate (25) and the first trapezoid plate (23) and is positioned on the hollow oval heat exchange bin (1);
the filter screen assembly comprises a filter bin (14) and a filter screen (15), the filter bin (14) is communicated with the hollow oval heat exchange bin (1) and is positioned between the second trapezoidal plate (25) and the first trapezoidal plate (23), the filter screen (15) is arranged in the filter bin (14) at equal intervals, and a linkage cleaning rod assembly is arranged on one side of the filter screen (15);
linkage clearance pole subassembly includes second bull stick support frame (16), second linkage bull stick (17) and U type frame, second bull stick support frame (16) is installed top one side department of filter house (14), just run through on second bull stick support frame (16) and be equipped with second linkage bull stick (17), just second linkage bull stick (17) protrusion has U type frame, and it has articulated hinge bar (18) to go up to articulate on this U type frame, hinge bar (18) run through filter house (14) are articulated to have clearance head (28), one side of clearance head (28) with filter screen (15) contact.
2. A combined high efficiency air preheater according to claim 1, wherein: the shock frame assembly comprises a base (27), a supporting base plate (29), L-shaped side frames (2), shock springs (3) and a limiting barrel (4), supporting legs (32) are installed at two sides of the top of the base (27), the supporting base plate (29) is installed at the top of the supporting legs (32), the L-shaped side frames (2) are installed at one side of the top of the supporting base plate (29), the limiting barrel (4) is installed at the inner top of the L-shaped side frames (2), the shock springs (3) are sleeved on the outer side of the limiting barrel (4), a hollow oval heat exchange bin (1) is installed at the bottom of the limiting barrel (4), and shock motor assemblies matched with the hollow oval heat exchange bin (1) are installed at the top of the supporting base plate (29);
the vibrating motor assembly comprises a vibrating motor (30) and a special-shaped wheel (31), the vibrating motor (30) is installed at the top of the supporting base plate (29), the special-shaped wheel (31) is installed at the output end of the vibrating motor (30), and the special-shaped wheel (31) is in contact with the hollow oval heat exchange bin (1).
3. A preheating method of a combined high efficiency air preheater according to claim 2, wherein: the method comprises the following steps:
step (1): introducing gas to be preheated into the spiral preheating introduction pipe (19), and sealing the gas through a valve;
step (2): high-temperature smoke discharged from the boiler is connected through a connecting disc (6) and enters the hollow oval heat exchange bin (1) through the telescopic pipe (5) and the air duct (9);
and (3): high-temperature smoke flows in the hollow oval heat exchange bin (1) after entering the hollow oval heat exchange bin (1) and reaches the position of a first trapezoidal plate (23), then a first valve (24) and a second valve (26) are opened and the valve leading to the filter bin (14) is closed if the temperature detected by a first temperature sensor arranged on the first trapezoidal plate (23) is higher than that detected by a second temperature sensor arranged at the tail part of the spiral preheating lead-in pipe (19), and then the smoke circulates through the second valve (26) and then turns;
and (4): when the difference between the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor is not large, the first valve (24) is opened, the second valve (26) is closed, and the valve is opened, so that the smoke passes through the filter screen (15) on the filter bin (14) for filtering;
and (5): when high-temperature smoke passes through the air guide pipe (9), the gas is synchronously driven to drive the fan blades (10) to rotate, the first linkage rotating rod (7) is adjusted through the gas drive fan blades (10) to drive the driving die wheel (11) to rotate, and the driving die wheel (11) drives the conveying belt (12) to move so as to drive the driven die wheel (13) to rotate;
and (6): the second linkage rotating rod (17) is adjusted to rotate through the driven die wheel (13), the hinge rod (18) is adjusted to move, and the cleaning head (28) is driven to move back and forth on one side of the filter screen (15) through the hinge rod (18) to clean;
and (7): when the interior of the hollow oval heat exchange bin (1) needs to be cleaned, cleaning liquid is poured into the hollow oval heat exchange bin (1) through the air guide pipe (9), then the vibration motor (30) is started to drive the special-shaped wheel (31) to adjust the hollow oval heat exchange bin (1) to vibrate, so that the cleaning strength is improved, and then the cleaning liquid is discharged through the liquid outlet valve (22).
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| CN116983823B (en) * | 2023-09-22 | 2023-12-12 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Integrated tail gas desulfurization and denitrification device and process convenient to move |
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