CN108006691A - Eight ways valve U-tube regenerative air preheater - Google Patents
Eight ways valve U-tube regenerative air preheater Download PDFInfo
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- CN108006691A CN108006691A CN201610937051.6A CN201610937051A CN108006691A CN 108006691 A CN108006691 A CN 108006691A CN 201610937051 A CN201610937051 A CN 201610937051A CN 108006691 A CN108006691 A CN 108006691A
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- valve
- spool
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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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- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of eight ways valve U-tube regenerative air preheater, to solve the problems, such as that heat regenerator pairing four-way valve synchronization dependability difference is low with sealing reliability etc. in the prior art.It includes reversal valve and regenerative chamber, reversal valve is rotary eight logical reversal valves, regenerative chamber includes the left room and right ventricle of U-tube form, rotary eight logical reversal valves include two four-way reversing valves, with a common axis, each four-way reversing valve includes valve body, spool, spool partition plate and four interfaces, the valve body and spool are spherical, spool is located at valve inner, valve body is connected with four interfaces, four endoporus are provided with spool, four interface diameters on valve body are equal, four diameter of bores on spool are equal, diameter of bore on spool is equal to or less than the interface diameter on valve body.Spool partition plate is arranged in spool, four endoporus are separated into two passages, valve shaft is fixed on spool, spool is connected with common axis, spool partition plate and to form rotatable parts, sealing ring, spring ring and Packing spring are provided between valve body and spool, a mouth of pipe of each two corresponding interfaces on four-way reversing valve respectively with left room and right ventricle's U-tube connects.
Description
Technical field
The invention belongs to heat transmission equipment, is related to a kind of eight ways valve U-tube regenerative air preheater.
Background technology
Flame heating furnace is widely used process heating furnace in oil, petrochemical industry and gas industry, with fuel oil or combustion gas
For fuel, flame directly heats the process-stream continuously flowed in boiler tube, meets temperature requirement of the upstream device to process-stream.
Air preheating system is the important component of flame heating furnace, but due to the influence of flue gas acid dew point, in system
Dew point corrosion often occurs for the air preheater of metal material.At present, the anti-low-temperature dew point corrosion technology of metal material does not have also
Substantive breakthroughs are obtained, limit the further reduction of flame heating furnace exhaust gas temperature.
In recent years, the country is heated extensively using a kind of effects of regenerative heat exchanging technology in various industrial furnaces with high-temperature flue gas
Heat storage, then the heat air that heat storage is stored, make air obtain high temperature preheating, after heat storage cooling, then are switched to
High-temperature flue gas heated condition, moves in circles, and achievees the purpose that waste heat recovery.Heat regenerator heat exchange efficiency height, small investment, section
Can positive effect and environmental-protection function it is larger.Due to making heat storage using ceramic honey comb, even if flue gas produces dew point, ceramic honey comb
It will not be corroded, therefore, regenerative combustion technology avoids air preheater for further reducing flame heating furnace exhaust gas temperature
Dew point corrosion also have very important significance.
But this commutation type regenerative heat exchanger also has the limitation of itself, due to heat storage be periodically heating,
Heat release causes the frequent fluctuation of air and flue gas flow field, furnace pressure fluctuation, it is necessary to periodically switch air and exhaust gases passes
It is very big, the difficulty in control is added, reduces the reliability of whole system；In addition, once a regenerative apparatus is stopped,
Whole system all will be in paralyzed state.
To solve the problems, such as that heat regenerator is unable to continuous work, Chinese patent CN 201410139676.9, discloses one
Kind heat regenerator, with four straight tube regenerative chambers continuous work in parallel for forming four-ways, ensureing heat exchanger.But four straight tubes
The four-way that regenerative chamber is formed, for air (flue gas), actual is two passes, only surplus when a passage commutates
One channels operation, air, flue gas flow field and furnace pressure fluctuation are still very big.It is additionally, since volume effect, will during commutation
Air duct is entered by one flue gas, the air oxygen content for being mixed into this strand of flue gas only has 12~13% or so, causes burner
Short time low oxygen combustion, the risk for thering is anoxic to stop working.Therefore, for needing to stablize the heating furnace to burn, four regenerative chambers are obvious
It is inadequate.In addition, a pair of of a pair of of four-way reversing valve synchronous working of straight tube regenerative chamber both ends configuration, this pair of of four-way reversing valve is such as
What ensures that synchronous patent does not illustrate.If this synchronously cannot be guaranteed four-way reversing valve, exhaust gases passes will be caused to lead to air
The conflict in road, can equally cause systemic breakdown.Therefore, a pair of of reversal valve synchronous working, to heat regenerator and to closing
Important.
To solve the problems, such as the synchronous communicating of a pair of of reversal valve, Chinese patent CN201120247848.6, discloses a kind of double
Fluid seven leads to combined type reversal valve, and fluid four-way valve is grouped together into seven by mechanical connection with fluid triple valve leads to,
Ensure two kinds of synchronised fluids, equidirectional carry out for giving displacement.The valve body of fluid four-way valve is cylinder, spool is rotating plate type,
Sealing structure is rotating plate type cylinder elastic packing.
The rotary type four-way reversal valve of the prior art, or by coaxially connected seven port valves formed of two reversal valves, its shortcoming
It is that valve body structure is complicated, big and heavy, flap sealing reliability is poor, air leak rate of air curtain is high.
At present, the regenerative chamber of the heat regenerator of the prior art, the straight tube still exported using an end entrance, the other end
Formula, structure are single.Using the regenerative chamber of vertical straight tube, bottom will also add grate plate to support heat storage, complicated.
The content of the invention
The object of the present invention is to provide a kind of eight ways valve U-tube regenerative air preheater, to solve to store in the prior art
Four-way valve synchronization dependability is poor for the pairing of hot type heat exchanger, change valve is big and heaviness, sealing reliability are low and regenerative chamber into
The problems such as one step minimizes.
The present invention provides a kind of eight ways valve U-tube regenerative air preheater, it is characterised in that：The eight ways valve U-tube stores
Hot type air preheater includes reversal valve and regenerative chamber, and reversal valve is rotary eight logical reversal valves, and regenerative chamber includes two rooms, left
Room and right ventricle, are U-tube form, and described rotary eight logical reversal valves include two four-way reversing valves, with a common axis, often
A four-way reversing valve includes valve body, spool, spool partition plate and four interfaces, and the valve body and spool are spherical, spool position
In valve inner, valve body is connected to form valve shell with four interfaces, and four interfaces are circle, two-by-two relatively, with respect to two interfaces
Center line interface opposite with another two center line it is in 90 °, four endoporus are provided with spool, two-by-two relatively, with respect in two
The center line of the center line in hole endoporus opposite with another two is in 90 °, and the diameter of four interfaces on valve body is equal, and four on spool
A diameter of bore is equal, and the diameter of bore on spool is equal to or less than the interface diameter on valve body, and spool partition plate is arranged on spool
It is interior, four endoporus are separated into two passages, valve shaft is fixed on spool, and spool is connected shape with common axis, spool partition plate
Into rotatable parts, the center of circle of spool partition plate is overlapped with the centre of sphere of spool and valve body, and sealing ring, bullet are provided between valve body and spool
Spring coil and Packing spring, two corresponding interfaces on each four-way reversing valve respectively with left room and right ventricle's U-tube one
A mouth of pipe connection.
The present invention is further technically characterized in that：The valve body and spool of each four-way reversing valve are hollow ball processing
Form, spool reinforcing rib is fixed with the spool inner wall of each four-way reversing valve.
The present invention is further technically characterized in that：The U-tube regenerative chamber is U-shaped pipe regenerative chamber.
The present invention is further technically characterized in that：The U-tube regenerative chamber is U-shaped square tube regenerative chamber.
The present invention is further technically characterized in that：The indoor heat storage of accumulation of heat is ceramic honey comb.
The present invention is further technically characterized in that：Each four-way reversing valve further includes axle sleeve, and axle sleeve is arranged on spool
It is interior, it is wrapped in outside common axis, common axis is vertical with the plane where four endoporus centers of circle on the spool of each four-way reversing valve,
It is and also vertical with the plane where four interface centers of circle on the valve body of each four-way reversing valve.
The present invention is further technically characterized in that：The eight ways valve U-tube regenerative air preheater further includes execution machine
Structure, after common axis is pierced by out of spool axle sleeve, its one end is connected after being pierced by valve body with executing agency.
The present invention is further technically characterized in that：Four interfaces of each four-way reversing valve are additionally provided with seal groove
Outer shroud, seal groove inner ring and interior ring connector, in each interface, seal groove outer shroud is fixedly connected with the valve body, seal groove inner ring
It is fixed on by interior ring connector in valve body interface, spring is installed at the U-lag formed between seal groove outer shroud, seal groove inner ring
Circle, Packing spring and sealing ring, spring ring and Packing spring are contacted in U-lag bottom, sealing ring with spool.
The present invention is further technically characterized in that：The sealing surface of the sealing ring is sphere, is between sealing ring and spool
Ball face sealing.
A kind of eight ways valve U-tube regenerative air preheater of the present invention, is mainly used for using heat storage type combustion skill
The heat transmission equipment of art or high frequency direction changing ratio effects of regenerative heat exchanging technology.
A kind of eight ways valve U-tube regenerative air preheater of the present invention, compared with prior art, has following excellent
Point：
First, the eight ways valve used is invented as spherical valve body, therefore uniform force.Under the conditions of same wall thickness, globe valve
The bearing capacity highest of body, under identical internal pressure conditions, wall thickness required for spherical valve body is only same diameter, the cylindrical shape with material
1/2 (without considering corrosion allowance) of valve body wall thickness；
Second, the eight ways valve used is invented as spherical valve body, and under the conditions of same volume, the surface area of spherical valve body is most
It is small.Due to the reason such as wall thickness is thin, surface area is small, spherical valve body generally saves 20%~40% steel than cylinder valve,
Reduce manufacture cost.
3rd, the spherical valve body that the present invention uses, valve body are not directly contacted with spool, and valve interior surface need not be processed,
Reduce difficulty of processing.
4th, the spherical valve core that uses of the present invention, it is the leakproofness of spherical valve core, wear-resistant, resistance to compared with rotating plate type spool
Corrosive nature is more preferable, longer life expectancy.
5th, eight logical reversal valve used by regenerative air preheater of the invention, with being arranged in pairs at using two
The four-way reversing valve at regenerative chamber both ends is compared, and net synchronization capability is more preferable, more reliable, and flue gas (air) can be effectively ensured and stored in a pair
Synchronous communicating in hot cell.
6th, the U-tube regenerative chamber that regenerative air preheater of the invention uses, inlet and outlet are located at the same side, with eight
Logical reversal valve matching performance is more preferable.The entrance end of U-tube is fixing end, and elbow end is free end, can freely be expanded with heat and contract with cold,
Therefore, expansion joint need not be set between U-tube regenerative chamber and eight logical reversal valves.The regenerative chamber phase at both ends is arranged in inlet and outlet
Than U-tube Regenerator Structure is more compact, more compact.
7th, the sealing ring sphere elastic packing that the present invention uses, compared with cylinder sealing or flat seal, contact area
Less, frictional resistance is small, and the abrasion of sealing ring can be compensated automatically by Packing spring, and the thermal expansion difference of spool and valve body can also pass through
Packing spring compensates automatically, and sealing ring and Packing spring are replaceable.
In addition, the eight logical reversal valves that regenerative air preheater provided by the invention uses, it is (empty can be effectively ensured flue gas
Gas) synchronous communicating in a pair of U-shaped pipe regenerative chamber, solve the synchronous communicating that the prior art splits four-way reversing valve using a pair
Problem.The spherical valve body of use, has the advantages that simple in structure, uniform force, light weight, solves the rotary of the prior art
The problems such as change valve is complicated, big and heavy；Spherical valve core leakproofness, wear-resistant, corrosion resistance is more preferable, can do
To sphere elastic packing, solves the problems such as rotating plate type seal spool poor reliability, air leak rate of air curtain is high.The elbow of U-tube regenerative chamber
Free end can solve the problems, such as regenerative chamber expanding with heat and contract with cold in itself, it is not necessary to add expansion joint.U-tube regenerative chamber is horizontally disposed, no
Need the support problem of consideration heat storage.Regenerative air preheater compact provided by the invention, floor space is small, can be with
The interior parallel operation for realizing more regenerative air preheaters in a limited space.
With the drawings and specific embodiments, the present invention is described in further detail below, but attached drawing and specific embodiment party
Formula is not limit the scope of the invention.
Brief description of the drawings
Fig. 1 is a kind of structure chart of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 2 is a kind of eight ways valve reversal valve of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 3 is a kind of eight ways valve structure of reversing valve sectional view of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 4 is a kind of upper valve core sectional view of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 5 is a kind of bottom spool sectional view of eight ways valve U-tube regenerative air preheater device of the present invention.
Fig. 6 is a kind of eight ways valve sphere elastic packing sectional view of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 7 is a kind of left room regenerative chamber sectional view of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 8 is a kind of right ventricle's regenerative chamber sectional view of eight ways valve U-tube regenerative air preheater of the present invention.
Fig. 9 is one of a kind of working status of eight ways valve U-tube regenerative air preheater of the present invention (left heat release, right storage
Heat).
Figure 10 be a kind of working status of eight ways valve U-tube regenerative air preheater of the present invention two (left accumulation of heat, the right side are put
Heat).
Figure 11 is the embodiment that a kind of eight ways valve U-tube regenerative air preheater of the present invention is applied in heating furnace.
Reference numeral is shown in figure：
1st, regenerative air preheater；
10th, eight logical reversal valve；11st, common axis；12nd, upper valve body；13rd, upper valve core；14th, upper valve core partition plate；15th, A interfaces；
16th, B interface；17th, C interface；18th, D interface；19th, lower valve body；20th, bottom spool；21st, bottom spool partition plate；22nd, E interface；23rd, F connects
Mouthful；24th, G interface；25th, H interface；26th, upper valve axle sleeve；27th, upper valve core reinforcing rib；28th, lower valve axle sleeve；29th, bottom spool reinforcing rib；
30th, sealing ring；31st, Packing spring；32nd, spring ring；33rd, seal groove outer shroud；34th, seal groove inner ring；35th, interior ring connector；
40th, left room；41st, left room F ' interfaces；42nd, shell under left room；43rd, left room elbow；
44th, shell on left room；45th, left room B ' interfaces；46th, left room heat storage；
50th, right ventricle；51st, right ventricle D ' interfaces；52nd, shell under right ventricle；53rd, right ventricle's elbow；
54th, shell in right ventricle；55th, right ventricle H ' interfaces；56th, right ventricle's heat storage；
60th, executing agency；
90th, heating furnace；91st, exhanst gas outlet；92nd, burner；95th, air blower；96th, air-introduced machine；97th, chimney；
100th, flue gas stream；200th, air stream
Embodiment
As shown in Figure 1 and Figure 2, a kind of eight ways valve U-tube regenerative air preheater 1 of the present invention, including reversal valve and accumulation of heat
Room, reversal valve are rotary eight logical reversal valves 10, and regenerative chamber includes two rooms, and left room 40 and right ventricle 50, are U-tube form,
Described rotary eight logical reversal valves 10 include two four-way reversing valves, with a common axis 11, as depicted in figs. 1 and 2, the two
The upper and lower arrangement of four-way reversing valve, each four-way reversing valve include valve body, spool, spool partition plate and four interfaces, the valve body
It is spherical with spool, spool is located at valve inner, and valve body is connected to form valve shell with four interfaces, and four interfaces are circle,
Opposite two-by-two, the center line of interface opposite with another two with respect to the center line of two interfaces is in 90 °, is provided with spool in four
Hole, two-by-two relatively, the center line of endoporus opposite with another two with respect to the center line of two endoporus are in 90 °, and four on valve body connect
Mouth diameter is equal, and four diameter of bores on spool are equal, and the interface that the diameter of bore on spool is equal to or less than on valve body is straight
Footpath, spool partition plate are arranged in spool, and four endoporus are separated into two passages, and valve shaft is fixed on spool, and spool is with sharing
Axis, spool partition plate are connected to form rotatable parts, and the center of circle of spool partition plate is overlapped with the centre of sphere of spool and valve body, valve body and valve
It is provided with sealing ring 30, spring ring 32 and Packing spring 31 between core, two on first four-way reversing valve are corresponding to be connect
A mouth of pipe of the mouth respectively with left room 40 and right ventricle 50U shape pipes connects, two on the second four-way reversing valve corresponding interface point
Another mouth of pipe not with left room 40 and right ventricle 50U shape pipes connects.
As depicted in figs. 1 and 2, four-way reversing valve above includes upper valve body 12, upper valve core 13, upper valve core partition plate 14 and four
A interface, is respectively：A interfaces 15, B interface 16, C interface 17 and D interface 18, following four-way reversing valve include lower valve body 19,
Bottom spool 20, bottom spool partition plate 21 and four interfaces, are respectively：E interface 22, F interface 23, G interface 24 and H interface 25.
Each four-way reversing valve spool, i.e. upper valve core 13 and bottom spool 20 is that hollow ball is process, Mei Gesi
Spool reinforcing rib is fixed with spool (upper valve core 13 and bottom spool 20) inner wall of logical reversal valve, upper valve core is fixed in upper valve core 13
Reinforcing rib 27, fixes bottom spool reinforcing rib 29 in bottom spool 20.
As shown in Figure 1, the B interface 16 and F interface 23 in eight ways valve 10 are connected with left room 40；D interface 18 and H interface 25 with
Right ventricle 50 connects.Flue gas stream 100 enters regenerative air preheater 1 from the C interface 17 of eight ways valve 10, is left from G interface 24.
Air stream 200 enters regenerative air preheater 1 from the E interface 22 of eight ways valve 10, is left from A interfaces 15.
Fig. 3 show 10 structure sectional view of eight ways valve reversal valve of eight ways valve U-tube regenerative air preheater of the present invention,
As shown in the figure, eight ways valve 10 is by common axis 11, upper valve body 12, upper valve core 13, upper valve core partition plate 14, A interfaces 15, B interface 16, C
Interface 17, D interface 18, lower valve body 19, bottom spool 20, bottom spool partition plate 21, E interface 22, F interface 23, G interface 24, H interface 25
Deng composition.As shown in the figure, upper valve body 12, upper valve core 13, lower valve body 19, bottom spool 20 are hollow ball shape.Upper valve body 12 and A connects
Mouth 15, B interface 16, C interface 17, D interface 18 connect, and form four interfaces.The center line and B interface of A interfaces 15 and C interface 17
16 and the central axis of D interface 18.Lower valve body 19 is connected with E interface 22, F interface 23, G interface 24, H interface 25, forms four
A interface.The center line of E interface 22 and G interface 24 and F interface 23 and the central axis of H interface 25.In the connection of common axis 11
Spool 13 and bottom spool 20, drive upper valve core 13 and bottom spool 20 to rotate synchronously.
Fig. 4 is 13 sectional view of upper valve core of eight ways valve U-tube regenerative air preheater of the present invention, as shown in figure 4, upper valve
Core 13 is hollow ball shape, is provided with tetra- circular endoporus of a, b, c, d on ball, the mutual arrangement in 90 ° of four circular endoporus, internal diameter phase
Together, i.e. the center line of the center line of endoporus a and endoporus c and endoporus b and endoporus d vertical relation each other.A, b, c, d of upper valve core 13
Four circular inner holes are corresponding with A interfaces 15, B interface 16, C interface 17, the D interface 18 of upper valve body 12.Upper valve core partition plate 14 exists
Tetra- circular inner holes of a, b, c, d are separated into two passages, i.e. a-b passages and c-d passages in upper valve core 13.Upper valve axle sleeve 26 is worn
Go out the upper and lower surface of upper valve core 13, and be connected as a single entity, form rotatable parts.Upper valve core reinforcing rib 27 plays support in upper valve core 13
Booster action.
Fig. 5 is 20 sectional view of bottom spool of eight ways valve U-tube regenerative air preheater of the present invention, as shown in figure 5, lower valve
Core 20 is hollow ball shape, is provided with tetra- circular endoporus of e, f, g, h on ball, the mutual arrangement in 90 ° of four circular inner holes, internal diameter phase
Together.Tetra- circular inner holes of e, f, g, h of bottom spool 20 and the E interface 22 of bottom spool 20, F interface 23, G interface 24,29 phase of H interface
It is corresponding.Tetra- circular inner holes of e, f, g, h are separated into two passages in the bottom spool 20 by bottom spool partition plate 21, i.e., e-f passages with
G-h passages.Lower valve axle sleeve 28 is pierced by the upper and lower surface of bottom spool 20, and is connected as a single entity, and forms rotatable parts.Bottom spool reinforcing rib
29 play support reinforcing in bottom spool 20.
Fig. 6 is the 10 sphere elastic packing sectional view of eight ways valve of eight ways valve U-tube regenerative air preheater of the present invention, such as
Shown in Fig. 6, seal groove outer shroud 33 and upper valve body 12 (or lower valve body 19) firm welding, seal groove inner ring 34 pass through interior ring connector
35 are separately fixed in interface.U-lag installation Packing spring 31, the bullet formed between seal groove outer shroud 33, seal groove inner ring 34
Spring coil 32 and sealing ring 30, Packing spring 31 and spring ring 32 are placed on U-lag bottom, and sealing ring 30 is with upper valve core 13 (under or
Spool 20) directly contact, the sealing surface of sealing ring 30 is concave spherical surface, is coincide with the sphere of upper valve core 13 (or bottom spool 20), shape
Into ball face sealing, Packing spring 31 applies elastic force to sealing ring 30, makes sealing ring 30 and upper valve core 13 (or bottom spool 20) formation
Sphere elastic packing.Spring ring 32 plays located in series to Packing spring 31.
Fig. 7 is left 40 sectional view of room of eight ways valve U-tube regenerative air preheater of the present invention, as shown in fig. 7,40 shell of left room
Body is made of shell 44 on shell 42 under left room, left room elbow 43, left room, and left room elbow 43 is detachable, and there are 2 interfaces in left room 40
I.e. left room F ' interfaces 41 and left room B ' interfaces 45.Left room heat storage 46 is seated in the housing of left room 40, and left room heat storage 46 is
Honeycomb ceramic heat accumulator.
Fig. 8 is 50 sectional view of eight ways valve U-tube regenerative air preheater right ventricle of the present invention, as shown in figure 8,50 shell of right ventricle
Body is made of shell 54 in shell under right ventricle 52, right ventricle's elbow 53, right ventricle, and right ventricle's elbow 53 is detachable, and there are 2 interfaces in right ventricle 50
That is right ventricle D ' interfaces 51 and right ventricle's H ' interfaces 55.Right ventricle's heat storage 56 is seated in the housing of right ventricle 50, and right ventricle's heat storage 56 is
Honeycomb ceramic heat accumulator.
Fig. 9, Figure 10 are two kinds of working statuses of eight ways valve U-tube regenerative air preheater of the present invention, for clear expression
Logistics disengaging flows to, and a distance is pulled open in left room 40 and right ventricle 50 with eight ways valve 10 in figure.In actual work, the F ' of left room 40
Interface 41, B ' interfaces 45 are that the B interface 16 with eight ways valve 10, F interface 23 are close-connected respectively；D ' the interfaces 51 of right ventricle 50,
The D interface 18 with eight ways valve 10, H interface 25 are close-connected respectively for H ' interfaces 55.In figure, flue gas stream 100 is from eight ways valve 10
C interface 17 enter regenerative air preheater 1, left from G interface 24.Air stream 200 from the E interface 22 of eight ways valve 10 into
Enter regenerative air preheater 1, left from A interfaces 15.
For one of eight ways valve U-tube regenerative air preheater working status of the present invention, (left room heat release, right ventricle store Fig. 9
Heat).As shown in figure 9, at this time, the upper valve core internal partition 14 and bottom spool internal partition 21 of eight ways valve 10 are in 45 ° of positions.
At this time, the circular hole a of upper valve core 13 and the A interfaces 15 of upper valve body 12 are corresponding, and circular hole b is corresponding with B interface 16, circular hole c
Corresponding with C interface 17, circular hole d is corresponding with D interface 18.Thus, the a-b passages in upper valve core 13, A interfaces 15 and B interface are passed through
16 connections, form an A-B passage；By the c-d passages in upper valve core 13, C interface 17 is connected with D interface 18, is formed another
Bar C-D passages.
At this time, the circular hole e of bottom spool 20 and the E interface 22 of lower valve body 19 are corresponding, and circular hole f is corresponding with F interface 23, circular hole g
Corresponding with G interface 24, circular hole h is corresponding with H interface 25.Thus, the e-f passages in bottom spool 20, E interface 22 and F interface are passed through
23 connections, form an E-F passage；By the g-h passages in bottom spool 20, G interface 24 is connected with H interface 25, is formed another
Bar G-H passages.
At this time, flue gas stream 100, enter regenerative air preheater 1 from the C interface 17 of eight ways valve 10, pass through eight ways valve
C-D passages and D interface 18 in 10, into the D ' interfaces 51 of right ventricle 50, through after heat storage 56, the H ' interfaces 55 from right ventricle 50
Leave, return to the H interface 25 of eight ways valve 10, accumulation of heat is flowed out from the G interface 24 of eight ways valve 10 by the G-H passages in eight ways valve 10
Regenerative air heater 1.
At this time, air stream 200, enter regenerative air preheater 1 from the E interface 22 of eight ways valve 10, pass through eight ways valve
E-F passages and F interface 23 in 10, into the F ' interfaces 41 of left room 40, through after heat storage 46, the B ' interfaces 45 from left room 40
Leave, return to the B interface 16 of eight ways valve 10, accumulation of heat is flowed out from the A interfaces 15 of eight ways valve 10 by the A-B passages in eight ways valve 10
Regenerative air heater 1.
Eight ways valve U-tube regenerative air preheater working status of the present invention is in Fig. 9：Heat storage in left room 40 is put
Heat, the heat storage accumulation of heat in right ventricle 50.
Figure 10 be eight ways valve U-tube regenerative air preheater working status of the present invention two (left room accumulation of heat, right ventricle is put
Heat).As shown in figure 9, at this time, the upper valve core internal partition 14 and bottom spool internal partition 21 of eight ways valve 10 are in 135 ° of positions.
At this time, the circular hole a of upper valve core 13 and the B interface 16 of upper valve body 12 are corresponding, and circular hole b is corresponding with C interface 17, circular hole c
Corresponding with D interface 18, circular hole d is corresponding with A interfaces 15.Thus, the c-d passages in upper valve core 13, A interfaces 15 and D interface are passed through
18 connections, form an A-D passage；By the a-b passages in upper valve core 13, C interface 17 is connected with B interface 16, is formed another
Bar C-B passages.
At this time, the circular hole e of bottom spool 20 and the F interface 23 of lower valve body 19 are corresponding, and circular hole f is corresponding with G interface 24, circular hole g
Corresponding with H interface 25, circular hole h is corresponding with E interface 22.Thus, the g-h passages in bottom spool 20, E interface 22 and H interface are passed through
25 connections, form an E-H passage；By the e-f passages in bottom spool 20, G interface 24 is connected with F interface 23, is formed another
Bar G-F passages.
At this time, flue gas stream 100, still enter regenerative air preheater 1 from the C interface 17 of eight ways valve 10, pass through eight
C-B passages and B interface 16 in port valve 10, into the B ' interfaces 45 of left room 40, through after heat storage 46, connect from the F ' of left room 40
Mouth 41 leaves, and the F interface 23 of eight ways valve 10 is returned to, by the G-F passages in eight ways valve 10, still from the G interface of eight ways valve 10
24 outflow regenerative air preheaters 1.
At this time, air stream 200, still enter regenerative air preheater 1 from the E interface 22 of eight ways valve 10, pass through eight
E-H passages and H interface 25 in port valve 10, into the H ' interfaces 55 of right ventricle 50, through after heat storage 56, connect from the D ' of right ventricle 50
Mouth 51 leaves, and the D interface 18 of eight ways valve 10 is returned to, by the A-D passages in eight ways valve 10, still from the A interfaces of eight ways valve 10
15 outflow regenerative air preheaters 1.
Eight ways valve U-tube regenerative air preheater working status of the present invention is in Figure 10：Heat storage in left room 40 stores
Heat, the heat storage heat release in right ventricle 50.
During eight ways valve U-tube regenerative air preheater of the present invention work, first from upper valve core partition plate shown in Fig. 9 14, under
Spool partition plate 21 starts 45 ° of positions, and after a period of time, executing agency 60 acts on common axis 11 and makees 90 ° of rotations, common axis
11 band upper valve cores 13, bottom spool 20 rotate synchronously 90 °, upper valve core partition plate 14, bottom spool partition plate 21 is reached 135 ° in Figure 10
Position；Certain interval of time again, executing agency 60 remake for common axis 11 make -90 ° rotation, common axis 11 with upper valve core 13,
Bottom spool 20 rotates synchronously -90 °, 45 ° of positions for making upper valve core partition plate 14, bottom spool partition plate 21 be returned in Fig. 9.The above process
In cycles, 135 ° of positions in 45 ° of positions, the Figure 10 of upper valve core partition plate 14, bottom spool partition plate 21 just in fig.9 are periodically followed
Ring is reciprocal, makes left room 40 of the flue gas stream 100 in regenerative air preheater 1, heat release by turns in right ventricle 50, air stream
Absorb heat by turns in 200 left rooms 40 in regenerative air preheater 1, right ventricle 50, two logistics are in regenerative air preheater 1
Inside complete heat transfer process.
Embodiment one
Figure 11 is the embodiment that a kind of eight ways valve U-tube regenerative air preheater 1 of the present invention is applied in heating furnace.Such as
Shown in Figure 11,4 regenerative air preheaters 1 are installed in parallel in the flue gas waste heat recovery system of heating furnace 90, flue gas stream
100 after the exhanst gas outlet 91 of heating furnace 90 flows out, and point 4 tunnels are respectively enterd in the C interface of 4 regenerative air preheaters 1,
In 4 regenerative air preheaters 1 after heat release, and flowed out respectively from the G interface of 4 regenerative air preheaters 1, after collecting,
Chimney 97 is discharged into by air-introduced machine 96.After air stream 200 is sent out by air blower 95, point 4 tunnels respectively enter 4 regenerative type airs
In the E interface of preheater 1, in 4 regenerative air preheaters 1 after heat absorption, and respectively from 4 regenerative air preheaters 1
A interfaces outflow, after collecting, it is combustion-supporting to enter stove into the burner 92 in heating furnace 90.
During work, 4 eight ways valves 10 of 4 regenerative air preheaters 1 in parallel, separated in time order switches, no
Act at the same time, when 1 eight ways valve 10 switches, remaining 3 do not switch, in this way, influence when 1 eight ways valve 10 switches to system is only
1/4 is accounted for, the stability of system can be effectively ensured.During commutation, due to volume effect, flue gas, which is mixed into air, causes air oxygen
The reduction degree of content is just very limited, and the normal combustion for the burner 92 being effectively guaranteed in heating furnace 90, avoids scarce
The risk that oxygen stops working.
As shown in figure 11, in 4 regenerative air preheaters 1 of the flue gas waste heat recovery system of heating furnace 90,
The spool operating position of the eight ways valve 10 of a bottom regenerative air preheater 1, with remaining 3 regenerative air preheater
1 difference, but no matter the operating position of 10 spool of eight ways valve is at 45 ° or 135 °, can keep flue gas stream 100, air
Logistics 200 is unimpeded in regenerative air preheater 1.
A kind of eight ways valve U-tube regenerative air preheater provided by the invention, eight logical reversal valves of use can be effective
Ensure flue gas (air) synchronous communicating in a pair of U-shaped pipe regenerative chamber, solve the prior art and four-way commutation is split using a pair
The synchronous communicating problem of valve.The spherical valve body of use, has the advantages that simple in structure, uniform force, light weight, solves existing
The problems such as rotating type change valve valve body structure of technology is complicated, big and heavy；Spherical valve core is wear-resistant, corrosion-resistant, long lifespan, can
To accomplish sphere elastic packing, solves the problems such as rotating plate type seal spool poor reliability, air leak rate of air curtain is high.The U-tube of use stores
Hot cell compact, inlet and outlet be located at the same side, more preferable, the elbow free end of U-tube that leads to reversal valve matching performances with eight, can be with
Freely expand with heat and contract with cold, therefore, expansion joint need not be set between U-tube regenerative chamber and eight logical reversal valves.The horizontal cloth of U-tube regenerative chamber
Put, it is not necessary to consider the support problem of heat storage.
A kind of eight ways valve U-tube regenerative air preheater compact provided by the invention, floor space is small, Ke Yi
The parallel operation of more regenerative air preheaters is realized in limited space.More regenerative air preheater parallel operations
When, the commutation action separated in time order of every eight ways valve carries out, every time an only eight ways valve commutation, in this manner it is possible to
The adverse effect produced due to valve commutation to the air flow field, flue gas flow field and furnace pressure of heating furnace, burning is greatly reduced
The oxygen content of air can also obtain effective guarantee, so that heating furnace is capable of the operation of continuous-stable.
The sealing ring 30 that the present invention uses can select bronze material,
The Packing spring 31 that the present invention uses generally selects high temperature resistant spring.
Sealing ring 30, the Packing spring 31 of the use of the present invention can be replaced.
Claims (9)
- A kind of 1. eight ways valve U-tube regenerative air preheater, it is characterised in that：The eight ways valve U-tube heat-accumulating air preheating Device includes reversal valve and regenerative chamber, and reversal valve is rotary eight logical reversal valves, and regenerative chamber includes two rooms, left room and right ventricle, For U-tube form, described rotary eight logical reversal valves include two four-way reversing valves, with a common axis, each four-way commutation Valve includes valve body, spool, spool partition plate and four interfaces, and the valve body and spool are spherical, and spool is located at valve inner, Valve body is connected to form valve shell with four interfaces, and four interfaces are circle, two-by-two relatively, the center line of opposite two interfaces with separately The center line of two opposite interfaces is in 90 °, and four endoporus are provided with spool, two-by-two relatively, the center line of opposite two endoporus and Another two is in 90 ° with respect to the center line of endoporus, and four interface diameters on valve body are equal, four diameter of bore phases on spool Deng diameter of bore on spool is equal to or less than the interface diameter on valve body, and spool partition plate is arranged in spool, by four endoporus Two passages are separated into, valve shaft is fixed on spool, and spool is connected to form rotatable parts with common axis, spool partition plate, valve The center of circle of core partition plate is overlapped with the centre of sphere of spool and valve body, and sealing ring, spring ring and sealing bullet are provided between valve body and spool Spring, a mouth of pipe of each two corresponding interfaces on four-way reversing valve respectively with left room and right ventricle's U-tube connect.
- A kind of 2. eight ways valve U-tube regenerative air preheater according to claim 1, it is characterised in that：It is described each The valve body and spool of four-way reversing valve are that hollow ball is process, and spool is fixed with the spool inner wall of each four-way reversing valve Reinforcing rib.
- A kind of 3. eight ways valve U-tube regenerative air preheater according to claim 1, it is characterised in that：The U-tube Regenerative chamber is U-shaped pipe regenerative chamber.
- A kind of 4. eight ways valve U-tube regenerative air preheater according to claim 1, it is characterised in that：The U-tube Regenerative chamber is U-shaped square tube regenerative chamber.
- A kind of 5. eight ways valve U-tube regenerative air preheater according to claim 1, it is characterised in that：The accumulation of heat Indoor heat storage is ceramic honey comb.
- A kind of 6. eight ways valve U-tube regenerative air preheater according to claim 1, it is characterised in that：It is described each Four-way reversing valve further includes axle sleeve, and axle sleeve is arranged in spool, is wrapped in outside common axis, common axis and each four-way reversing valve Spool on plane where four endoporus centers of circle it is vertical, and with four interface center of circle institutes on the valve body of each four-way reversing valve Plane it is also vertical.
- A kind of 7. eight ways valve U-tube regenerative air preheater according to claim 6, it is characterised in that：Described eight is logical Valve U-tube regenerative air preheater further includes executing agency, and after common axis is pierced by out of spool axle sleeve, its one end is pierced by valve body It is connected afterwards with executing agency.
- A kind of 8. eight ways valve U-tube regenerative air preheater according to claim 1, it is characterised in that：It is described each Four interfaces of four-way reversing valve are additionally provided with seal groove outer shroud, seal groove inner ring and interior ring connector, in each interface, Seal groove outer shroud is fixedly connected with the valve body, and seal groove inner ring is fixed in valve body interface by interior ring connector, seal groove outer shroud, Spring ring, Packing spring and sealing ring are installed, spring ring and Packing spring are in U-shaped at the U-lag formed between seal groove inner ring Trench bottom, sealing ring are contacted with spool.
- A kind of 9. eight ways valve U-tube regenerative air preheater according to claim 8, it is characterised in that：The sealing The sealing surface of ring is concave spherical surface, is ball face sealing between sealing ring and spool.
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| CN201610937051.6A CN108006691A (en) | 2016-11-01 | 2016-11-01 | Eight ways valve U-tube regenerative air preheater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610937051.6A CN108006691A (en) | 2016-11-01 | 2016-11-01 | Eight ways valve U-tube regenerative air preheater |
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| CN108006691A true CN108006691A (en) | 2018-05-08 |
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| CN201610937051.6A Pending CN108006691A (en) | 2016-11-01 | 2016-11-01 | Eight ways valve U-tube regenerative air preheater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112212356A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Multichannel heat accumulation formula air heater |
| CN114459153A (en) * | 2022-01-14 | 2022-05-10 | 北京航天益森风洞工程技术有限公司 | Electric preheating heat accumulating type heater |
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