CN109000492A - Flue gas heat recovery method - Google Patents

Flue gas heat recovery method Download PDF

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Publication number
CN109000492A
CN109000492A CN201810510289.XA CN201810510289A CN109000492A CN 109000492 A CN109000492 A CN 109000492A CN 201810510289 A CN201810510289 A CN 201810510289A CN 109000492 A CN109000492 A CN 109000492A
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CN
China
Prior art keywords
water
flue gas
cartridge heater
electromagnet
water tank
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Application number
CN201810510289.XA
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Chinese (zh)
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CN109000492B (en
Inventor
袁世国
张朝友
袁志勇
赵明伦
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贵州环科环境工程有限公司
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Priority to CN201810510289.XA priority Critical patent/CN109000492B/en
Publication of CN109000492A publication Critical patent/CN109000492A/en
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Publication of CN109000492B publication Critical patent/CN109000492B/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001Recuperative heat exchangers
    • F28D21/0003Recuperative heat exchangers the heat being recuperated from exhaust gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0472Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus

Abstract

The invention belongs to energy recovery technical fields, specifically disclose flue gas heat recovery method, carry out waste heat recycling using flue gas waste heat recovery apparatus, including following operating procedure: (1) before use, the operating condition of first check device;(2) topped up with water in cartridge heater, under the action of floating ball, the first port is opened, and the second port blocks;After (3) second ports block, water is added in the epicoele toward water tank;(4) flue gas generated when boiler working is passed through exhaust gases passes;(5) being transported to the water in insulated water tank needs place to be used;(4) intracavitary water is replenished in time in surplus water intracavitary in regular check.Using method Mist heat recovering of the invention, effectively recycling energy edge, the thermal efficiency of boiler is improved.

Description

Flue gas heat recovery method

Technical field

The invention belongs to energy recovery technical field more particularly to a kind of flue gas heat recovery methods.

Background technique

Currently, for boiler, either coal-burning boiler, gas fired-boiler, oil burning boiler or biomass boiler, all There is a problem of that the thermal efficiency is lower, wherein flue gas loss is one of lower most important reason of boiler thermal efficiency.These boilers The flue-gas temperature some of discharge is up to more than 90 degree, these flue gases are vented directly to the external world, the heat of flue gas after environmental protection treatment It cannot efficiently use, China is a coal-fired big country, and the flue dust being discharged from various coal-burning boilers every year has tens million of tons, flue gas Heat cannot recycle, cause the great wasting of resources, thus flue gas waste heat recovery becomes the master for improving boiler thermal efficiency Want research direction.

Summary of the invention

The purpose of the present invention is to provide a kind of flue gas heat recovery methods, improve the thermal efficiency of boiler.

In order to achieve the above object, base case of the invention are as follows: flue gas heat recovery method uses fume afterheat Recyclable device carries out waste heat recycling, and flue gas waste heat recovery apparatus includes water tank, insulated water tank, cartridge heater and across cartridge heater It is connected with first pipe between the bottom of exhaust gases passes, cartridge heater and water tank, connects between insulated water tank and the bottom of cartridge heater It is connected to second pipe;Be placed in cartridge heater floating ball and equipped with make floating ball can only vertical motion limitting casing, the bottom of cartridge heater Equipped with posive temperature coefficient thermistor;Insulated water tank is equipped with the valve mechanism that can block second pipe, and valve mechanism includes Inside is provided with the fixed block of cavity, and the through-hole that can be connected to second pipe and insulated water tank is provided on fixed block, is slided in fixed block It is dynamic to be connected with the magnetic stripe that block through-hole, tension spring is connected between magnetic stripe and fixed block, being equipped in fixed block can be with magnetic stripe The first attracting electromagnet, the first electromagnet are electrically connected with posive temperature coefficient thermistor;It is equipped in water tank by water tank point It is divided into the demarcation plate of epicoele and cavity of resorption, the communicating pipe that section is Contraband shape is equipped in water tank, is provided in connection on the upside of communicating pipe First port of chamber and cavity of resorption is provided with the second port of connection cavity of resorption and first pipe, the upside of communicating pipe on the downside of communicating pipe Inside slidably connect the magnet that can block the first port and be fixed with can be attracting with magnet the second electromagnet, magnet and company The first spring is connected between siphunculus;Slidably connect the sliding block that can block the second port in the downside of communicating pipe, sliding block with Communicating pipe between magnet is provided with driving medium;The top of cartridge heater is equipped with the first single control switch with floating ball face, heating The lower part of cylinder is equipped with the second single control switch with floating ball face, and the first single control switch is powered for controlling the second electromagnet, and second Single control switch is for controlling the power-off of the second electromagnet;

Flue gas heat recovery method includes following operating procedure:

(1) before using flue gas waste heat recovery apparatus, the operating condition of first check device, it is ensured that valve mechanism, magnet, sliding block It can work normally;

(2) water to be heated is filled it up in cartridge heater, under the buoyancy of water, floating ball is risen to and the first single control switch Contact, floating ball press the first single control switch, and the second electromagnet energizing magnetic, the second electromagnet is attracting with magnet, makes magnet Overcome the active force of the first spring and moved to electromagnet side, the first port is opened, and the second port blocks;

(3) after magnet blocks the second port, water is added in the epicoele toward water tank;

(4) flue gas generated when boiler working is passed through exhaust gases passes, and flue gas is transferred heat to by exhaust gases passes to be added Water in hot cylinder, increases water temperature, and the resistance value of posive temperature coefficient thermistor increases, and the magnetism that the first electromagnet generates subtracts Weak, the attraction between the first electromagnet and magnetic stripe reduces, and magnetic stripe is to separate from the first electromagnet side under the action of tension spring Movement, after water temperature is increased to fixed temperature, magnetic stripe opens through-hole, and the water in cartridge heater is transferred in insulated water tank;Heating After water in cylinder shifts completely, due to losing the heat transfer process of hot water, the temperature decline of posive temperature coefficient thermistor, electricity Resistance decrease, the attraction between the first electromagnet and magnetic stripe increase, and magnetic stripe blocks through-hole again;At the same time, floating ball declines It is contacted to the second single control switch, the second single control switch controls the second outage, and magnet is to the under the pulling force of the first spring The movement of one spring side, the second port are opened, and the first port blocks, under intracavitary water be transferred to cartridge heater;

(5) being transported to the water in insulated water tank needs place to be used;

(4) intracavitary water is replenished in time in surplus water intracavitary in regular check.

The beneficial effect of this base case is:

1, with the water in cartridge heater by flue gas and when temperature rising, the positive temperature coefficient temperature-sensitive in cartridge heater The resistance value of resistance is gradually increased, and the attraction between the first electromagnet and magnetic stripe reduces, and magnetic stripe opens through-hole, in cartridge heater Reach the characteristics of the water energy of fixed temperature is enough automatically transferred in insulated water tank, is changed using water temperature and valve mechanism is set, is not required to Artificial control, is also not required to controller is separately provided and is controlled, and saves cost.

2, after the water heating in cartridge heater is transferred to insulated water tank, using floating ball the second port is opened, in water tank Water energy be enough automatically replenished in cartridge heater, be not required to artificial independent plus water, high degree of automation.

Further, exhaust gases passes include straight line portion and the spire in cartridge heater, and the outlet of spire, which is located at, to be added Outside hot cylinder.Spire is set and increases the residence time of the area and flue gas of flue gas heat transfer in cartridge heater, can more be filled The heat using flue gas divided.

Further, the downside of straight line portion is hinged with returning face plate, and straight line portion, which is equipped with to be located at below returning face plate, is equipped with dust Case, the weight of returning face plate hinge joint side are greater than the weight of the other side, and the side of returning face plate heavier-weight is equipped with and straight line portion The protrusion of downside inner wall fitting;Be equipped with the sieve that is placed on the side of returning face plate heavier-weight in straight line portion, sieve it is upper Portion is slidably connected at the upper side of straight line portion, and the brush handle that can clean screen surface with water is fixed in straight line portion;Magnetic stripe is close to first Bracing wire is connected on the side of electromagnet, the other side of bracing wire is connected on the side of returning face plate lighter in weight;It further include following Operating procedure: the dust of the collection in timing cleaning disposal box.

The filtering of sieve can be passed through into the gas of exhaust gases passes, the dust in gas is isolated on sieve, avoids powder Dirt, which with gas enters spire and is adhered on the inner wall of spire, causes spire to block.When flue gas waste heat recovery apparatus works, At regular intervals, magnetic stripe is moved to the side far from the first electromagnet, and magnetic stripe is by bracing wire to the one of returning face plate lighter in weight Side applies active force, makes the rollover rotating plate to one side to overturn of disposal box, the side of returning face plate heavier-weight is flipped up, returning face plate The side of heavier-weight applies upward active force to sieve and sieve is moved upwards along the side wall of straight line portion, at this time brush handle Sieve can be cleaned with water, effectively remove the dust being adhered on sieve, the dust fallen slid downwards along returning face plate to It in disposal box, is collected, is avoided due to adhering to the problem of excessive dust causes sieve to block on sieve by disposal box.

Further, a side length of returning face plate heavier-weight is greater than the height of straight line portion.So set, push plate is flipped up When can collide with the inner wall of straight line portion, be easy to make to be adhered to the inner wall dust of straight line portion by colliding and shaken off, effectively Solve the problems, such as that straight line portion inner wall is easy accumulation of ash and is difficult to clear up.

Further, the outlet of spire is connected with buffer channel, slidably connects piston in buffer channel, piston and slow It rushes and is connected with second spring between channel;Outlet is provided on the side wall of buffer channel;It further include following operating procedure: by boiler After the flue gas generated when work is passed through exhaust gases passes, checks whether be vented at outlet normally, stop immediately when being vented abnormal It is passed through flue gas toward exhaust gases passes, checks reason.After gas is entered in buffer channel by the exhaust outlet of spire, gas is to piston Apply active force, only when the pressure in buffer channel is greater than the active force of second spring, piston just can be sliding along buffer channel Dynamic, gas could be discharged when piston motion is to exhaust ports, extend residence time of the gas in exhaust gases passes, allow gas to It is enough more fully to provide heat for the water in cartridge heater, improve the utilization rate of resource.After flue gas is passed through exhaust gases passes, discharge is checked Whether it is vented at mouthful normally, avoids causing to explode since outlet is abnormal.

Detailed description of the invention

Fig. 1 is the main sectional view of flue gas heat recovery embodiment of the method for the present invention;

Fig. 2 is the side view that exhaust gases passes are connect with cartridge heater.

Specific embodiment

It is further described below by specific embodiment:

Appended drawing reference in Figure of description 1 to 2 includes: water tank 10, epicoele 11, cavity of resorption 12, the 20, second electricity of communicating pipe Magnet 21, magnet 22, the first port 23, the first spring 24, sliding block 25, the second port 26, cartridge heater 30, limitting casing 31, floating ball 32, the first single control switch 33, first pipe 34, the second single control switch 35, second pipe 36, insulated water tank 40, fixed block 41, magnetic Item 42, through-hole 43, the first electromagnet 44, tension spring 45, bracing wire 50, disposal box 60, straight line portion 70, sieve 71, returning face plate 72, protrusion 721, brush handle 73, buffer channel 80, exhaust outlet 81, second spring 82, piston 83, spire 90.

As shown in Figure 1 and Figure 2, flue gas heat recovery method carries out waste heat recycling using flue gas waste heat recovery apparatus, Flue gas waste heat recovery apparatus includes exhaust gases passes and the water tank being sequentially distributed from top to bottom 10, cartridge heater 30 and insulated water tank 40.Exhaust gases passes include the straight line portion 70 positioned at 30 left side of cartridge heater and the spire 90 in cartridge heater 30, spire 90 Outlet stretch out cartridge heater 30 outside.The buffer channel positioned at 30 right side of cartridge heater is fixedly connected at the outlet of spire 90 80, piston 83 is slidingly and sealingly connected in buffer channel 80, and is connected between the right side wall and buffer channel 80 of piston 83 Two springs 82 are provided with exhaust outlet 81 on the side wall of buffer channel 80, when piston 83 slides into certain position to the right, from spiral The gas that the outlet in portion 90 enters buffer channel 80 can be discharged by exhaust outlet 81.The downside of straight line portion 70, which is hinged with, to be turned over Rotating plate 72 is fixed with the disposal box 60 positioned at 72 lower section of returning face plate on straight line portion 70, is boundary's division using the hinged place of returning face plate 72 Left side, the right side of returning face plate 72, the weight on 72 right side of returning face plate are greater than the weight in 72 left side of returning face plate, the length on 72 right side of returning face plate Degree is greater than the height of straight line portion 70, can collide with the inner wall of straight line portion 70 when being flipped up on the right side of returning face plate 72.Returning face plate The protrusion 721 being bonded with 70 downside inner wall of straight line portion is fixed on 72 right sides, the setting of protrusion 721 limits returning face plate 72 Movement, the left side of returning face plate 72 can only be downwardly turned over into disposal box 60.It is equipped in straight line portion 70 and is placed on 72 right side of returning face plate Sieve 71 on side, the top of sieve 71 are slidably connected at the upper side of straight line portion 70, and being fixed in straight line portion 70 can clean with water The brush handle 73 on 71 surface of sieve.

First pipe 34, the bottom of insulated water tank 40 and cartridge heater 30 are connected between cartridge heater 30 and the bottom of water tank 10 Second pipe 36 is connected between portion.Be placed in cartridge heater 30 floating ball 32 and being fixed with make floating ball 32 can only vertical motion limit Position frame 31, the surface of limitting casing 31 are provided with multiple limbers, and floating ball 32 is located in limitting casing 31;The bottom of cartridge heater 30 is equipped with just Temperature coefficient thermistor.The valve mechanism that can block second pipe 36 is fixed on insulated water tank 40, valve mechanism includes Inside is provided with the fixed block 41 of cavity, and fixed block 41 is fixed on the upper side of insulated water tank 40 and is located at the lower section of returning face plate 72, The through-hole 43 that can be connected to second pipe 36 Yu insulated water tank 40 is provided on fixed block 41, slidably connecting in fixed block 41 can The magnetic stripe 42 for blocking through-hole 43, is connected with tension spring 45 between magnetic stripe 42 and the left side wall of fixed block 41, in the right side of fixed block 41 It is fixed with the first electromagnet 44, the first electromagnet 44 is electrically connected with posive temperature coefficient thermistor.When first electromagnet 44 is powered, Magnetic stripe 42 can be attracting with the first electromagnet 44, when the suction between magnetic stripe 42 and the first electromagnet 44 reduces to a certain extent, Under the pulling force of tension spring 45, magnetic stripe 42 moves to the left, and magnetic stripe 42 opens through-hole 43, and second pipe 36 and insulated water tank 40 connect It is logical.

The demarcation plate that water tank 10 is divided into epicoele 11 and cavity of resorption 12 is equipped in water tank 10, epicoele 11 is located at demarcation plate Top;Under the water of intracavitary storage cartridge heater can be full of just.The communicating pipe 20 that section is Contraband shape is fixed in water tank 10, The top of communicating pipe 20 passes through demarcation plate and is fixed on demarcation plate, and the lower part of communicating pipe 20 passes through the bottom of water tank 10 and consolidates It is scheduled on the bottom of water tank 10.The upside of communicating pipe 20 is provided with the first port 23 of connection epicoele 11 and cavity of resorption 12, communicating pipe 20 downside is provided with the second port 26 of connection cavity of resorption 12 and first pipe 34, and slidably connecting in the upside of communicating pipe 20 can The magnet 22 of the first port 23 is blocked, the left side of communicating pipe 20 is further fixed on the second electromagnet 21 that can be attracting with magnet 22, The first spring 24 is connected between magnet 22 and the right side of communicating pipe 20;Slidably connecting in the downside of communicating pipe 20 can block The sliding block 25 of second port 26 is provided with driving medium the communicating pipe 20 between sliding block 25 and magnet 22 and (in the present embodiment, passes Dynamic medium is hydraulic oil).When the second 21 no power of electromagnet, the second electromagnet 21 blocks the first port 23, the second port 26 It opens;When second electromagnet 21 is powered, the second electromagnet 21 attracts each other with magnet 22, and magnet 22 is made to overcome the first spring 24 Active force and move to the left, the first port 23 open, at the same time, since magnet 22 moves to the left and squeeze communicating pipe 20 Interior hydraulic oil, hydraulic oil drives sliding block 25, and Slideslip, sliding block 25 block the second port 26 to the right.The top of cartridge heater 30 is set There is the first single control switch 33 with 32 face of floating ball, the lower part of cartridge heater 30 is equipped with the second single control switch with 32 face of floating ball 35, the first single control switch 33 is powered for controlling the second electromagnet 21, and the second single control switch 35 is for controlling the second electromagnet 21 Power-off.When rising to extreme higher position under buoyancy of the floating ball 32 in the water in cartridge heater 30, floating ball 32 presses the first single control Switch 33, the first single control switch 33 control the second electromagnet 21 and are powered;After the water in cartridge heater 30 is discharged, floating ball 32 drops to Extreme lower position, floating ball 32 press the second single control switch 35, and the second single control switch 35 is for controlling the power-off of the second electromagnet 21.

Flue gas heat recovery method includes following operating procedure:

(1) before using flue gas waste heat recovery apparatus, the operating condition of first check device, it is ensured that valve mechanism, is slided magnet 22 Block 25 can work normally;

(2) water to be heated is filled it up in cartridge heater 30, under the buoyancy of water, floating ball 32 is risen to and the first single control Switch 33 contacts, and floating ball 32 presses the first single control switch 33,21 energizing magnetic of the second electromagnet, after pressing, even if floating ball 32 move down, and the second electromagnet 21 still keeps work;Second electromagnet 21 and magnet 22 are attracting, and magnet 22 is made to overcome the first spring 24 Active force and moved to 22 side of electromagnet, the first port 23 open, and the second port 26 block;

(3) after magnet 22 blocks the second port 26, water is added in the epicoele 11 toward water tank 10;

(4) flue gas generated when boiler working is passed through exhaust gases passes, and flue gas leads to heat transfer and transfers heat to heating Water in cylinder 30, water temperature gradually rise, and the resistance value of posive temperature coefficient thermistor increases, the magnetic force that the first electromagnet 44 generates Weaken, attraction between the first electromagnet 44 and magnetic stripe 42 reduces, and magnetic stripe 42 is under the pulling force effect of tension spring 45 to far from the The movement of one electromagnet, 44 side, after the temperature of water is increased to fixed temperature, magnetic stripe 42 opens through-hole 43, in cartridge heater 30 Water is transferred in insulated water tank 40;After water in cartridge heater 30 shifts completely, the resistance value of posive temperature coefficient thermistor is gradually Reduce, the attraction between the first electromagnet 44 and magnetic stripe 42 increases, and magnetic stripe 42 blocks through-hole 43 again;At the same time, floating ball 32 drop to and contact with the second single control switch 35, and the second single control switch 35 controls the second outage, in the drawing of the first spring 24 Magnet 22 is moved to 24 side of the first spring under power, and the second port 26 is opened, and the first port 23 blocks, and the water in cavity of resorption 12 turns Move on to cartridge heater 30;

(5) it checks whether be vented at outlet normally, stops being passed through flue gas toward exhaust gases passes immediately when being vented abnormal, arrange Look into reason;

(6) being transported to the water in insulated water tank 40 needs place to be used;

(7) surplus water in regular check epicoele 11, is replenished in time the water in epicoele 11;In timing cleaning disposal box 60 Collection dust.

What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification The records such as specific embodiment can be used for explaining the content of claim.

Claims (5)

1. flue gas heat recovery method, which is characterized in that waste heat recycling is carried out using flue gas waste heat recovery apparatus, more than flue gas Heat recovery apparatus includes water tank, insulated water tank, cartridge heater and the exhaust gases passes across cartridge heater, the bottom of cartridge heater and water tank It is connected with first pipe between portion, is connected with second pipe between insulated water tank and the bottom of cartridge heater;It is placed in cartridge heater Floating ball and equipped with make floating ball can only vertical motion limitting casing, the bottom of cartridge heater is equipped with posive temperature coefficient thermistor;Heat preservation Water tank is equipped with the valve mechanism that can block second pipe, and valve mechanism includes the internal fixed block for being provided with cavity, fixed block On be provided with the through-hole that can be connected to second pipe and insulated water tank, the magnetic stripe that can block through-hole is slidably connected in fixed block, It is connected with tension spring between magnetic stripe and fixed block, the first electromagnet that can be attracting with magnetic stripe, the first electromagnet are equipped in fixed block It is electrically connected with posive temperature coefficient thermistor;The demarcation plate that water tank is divided into epicoele and cavity of resorption, water storage are equipped in water tank It is equipped with the communicating pipe that section is Contraband shape in case, the first port of connection epicoele and cavity of resorption is provided on the upside of communicating pipe, communicating pipe Downside is provided with the second port of connection cavity of resorption and first pipe, and the first port can be blocked by slidably connecting in the upside of communicating pipe Magnet and be fixed with can be attracting with magnet the second electromagnet, the first spring is connected between magnet and communicating pipe;Connection The sliding block that can block the second port is slidably connected in the downside of pipe, is provided with transmission the communicating pipe between sliding block and magnet and is situated between Matter;The top of cartridge heater is equipped with the first single control switch with floating ball face, and the lower part of cartridge heater is equipped with second with floating ball face Single control switch, the first single control switch are powered for controlling the second electromagnet, and the second single control switch is disconnected for controlling the second electromagnet Electricity;
Flue gas heat recovery method includes following operating procedure:
(1) before using flue gas waste heat recovery apparatus, the operating condition of first check device, it is ensured that valve mechanism, magnet, sliding block can It works normally;
(2) water to be heated is filled it up in cartridge heater, under the buoyancy of water, floating ball rises to be connect with the first single control switch Touching, floating ball press the first single control switch, and the second electromagnet energizing magnetic, the second electromagnet is attracting with magnet, makes magnet gram It takes the active force of the first spring and is moved to electromagnet side, the first port is opened, and the second port blocks;
(3) after magnet blocks the second port, water is added in the epicoele toward water tank;
(4) flue gas generated when boiler working is passed through exhaust gases passes, and flue gas transfers heat to cartridge heater by exhaust gases passes Interior water, increases water temperature, and the resistance value of posive temperature coefficient thermistor increases, the magnetic decrease that the first electromagnet generates, the Attraction between one electromagnet and magnetic stripe reduces, and magnetic stripe is moved to separate from the first electromagnet side under the action of tension spring, After water temperature is increased to fixed temperature, magnetic stripe opens through-hole, and the water in cartridge heater is transferred in insulated water tank;In cartridge heater After water shifts completely, due to losing the heat transfer process of hot water, the temperature of posive temperature coefficient thermistor declines, under resistance value Drop, the attraction between the first electromagnet and magnetic stripe increase, and magnetic stripe blocks through-hole again;At the same time, floating ball drops to and the The contact of two single control switches, the second single control switch control the second outage, and magnet is to the first spring under the pulling force of the first spring Side movement, the second port are opened, and the first port blocks, under intracavitary water be transferred to cartridge heater;
(5) being transported to the water in insulated water tank needs place to be used;
(4) intracavitary water is replenished in time in surplus water intracavitary in regular check.
2. flue gas heat recovery method according to claim 1, it is characterised in that: exhaust gases passes include straight line portion and The outlet of spire in cartridge heater, spire is located at outside cartridge heater.
3. flue gas heat recovery method according to claim 2, it is characterised in that: the downside of straight line portion is hinged with Returning face plate, straight line portion, which is equipped with to be located at below returning face plate, is equipped with disposal box, and the weight of returning face plate hinge joint side is greater than the other side Weight, the side of returning face plate heavier-weight is equipped with the protrusion being bonded with straight line portion downside inner wall;It is equipped with and puts in straight line portion Set the sieve on the side of returning face plate heavier-weight, the top of sieve is slidably connected at the upper side of straight line portion, in straight line portion It is fixed with the brush handle that can clean screen surface with water;Magnetic stripe is connected with bracing wire on the side of the first electromagnet, bracing wire it is another Side is connected on the side of returning face plate lighter in weight;It further include following operating procedure: the powder of the collection in timing cleaning disposal box Dirt.
4. flue gas heat recovery method according to claim 3, it is characterised in that: the side of returning face plate heavier-weight Length is greater than the height of straight line portion.
5. according to the described in any item flue gas heat recovery methods of claim 2-4, it is characterised in that: the discharge of spire Mouth is connected with buffer channel, and piston is slidably connected in buffer channel, second spring is connected between piston and buffer channel;It is slow It rushes and is provided with exhaust outlet on the side wall in channel;Further include following operating procedure: the flue gas generated when boiler is worked is passed through flue gas and leads to It behind road, checks whether be vented at outlet normally, stops being passed through flue gas toward exhaust gases passes immediately when being vented abnormal, investigation is former Cause.
CN201810510289.XA 2018-05-24 2018-05-24 Flue gas waste heat recycling method CN109000492B (en)

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CN109000492B CN109000492B (en) 2020-04-21

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CN203869143U (en) * 2014-05-17 2014-10-08 王福广 Energy-saving and environment-friendly type static-pressure heating system for wall-mounted gas boiler
CN207454800U (en) * 2017-09-30 2018-06-05 重庆海特弘业催化剂有限公司 A kind of entering water electromagnetic valve

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CN201582773U (en) * 2009-11-30 2010-09-15 东莞宇隆电工材料有限公司 Steam generator utilizing exhaust gas residual heat
CN203531951U (en) * 2013-07-19 2014-04-09 河南理工大学 Large-discharge-capacity slagging and water draining device based on electromagnet control
CN203869143U (en) * 2014-05-17 2014-10-08 王福广 Energy-saving and environment-friendly type static-pressure heating system for wall-mounted gas boiler
CN207454800U (en) * 2017-09-30 2018-06-05 重庆海特弘业催化剂有限公司 A kind of entering water electromagnetic valve

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