CN104152663B - The process furnace of annular element - Google Patents
The process furnace of annular element Download PDFInfo
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- CN104152663B CN104152663B CN201410345152.5A CN201410345152A CN104152663B CN 104152663 B CN104152663 B CN 104152663B CN 201410345152 A CN201410345152 A CN 201410345152A CN 104152663 B CN104152663 B CN 104152663B
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Abstract
The invention provides a kind of process furnace of annular element, it is provided with first successively from top to bottom in body of heater, second and the 3rd diaphragm, in the top inner wall of body of heater, first, second, 3rd forms first between diaphragm and the bottom interior wall of body of heater successively, second, third and fourth gas channel, second and the 4th is provided with air-flow in gas channel adds heat accelerator, the first centrifugal impeller is provided with between the first and second diaphragms, annular element upper, the top of lower surface and outer side wall and body of heater, bottom interior wall and inner side-wall form the 5th gas channel, first centrifugal impeller driving gas circulates, gas enters the second gas channel from the air outlet of the first centrifugal impeller, add after heat accelerator through air-flow and clash into the inner side-wall of annular element, flow through the 3rd successively afterwards, 4th gas channel, the air intake vent of the first centrifugal impeller is entered after 5th gas channel and the first gas channel.It can heat targetedly to annular element, energy consumption is relatively lower.
Description
Technical field
The present invention relates to process furnace, particularly relate to the process furnace of annular element.
Background technology
Before carrying out mechanical assembly to some annular element, sometimes need to heat this annular element, wherein more typical annular element is bearing.In the manufacture field of wind power generating set, with regard to needs, large quality, large-sized bearing are heated in the technique being called as " hot jacket installation ".
Resistance heading furnace is generally adopted to heat annular element at present, resistance heading furnace is using the warm air circulated as heat-transfer medium, when air-flow is by electrical heating element surface, heat is taken away in the mode of convective heat exchange by air-flow, in the mode of convective heat exchange, heat passed to bearing again, what its adopted is based on warm air as heat-transfer medium to bearing surface transmission of heat by convection, be auxiliary complex heat transfer mode with radiative transfer.As shown in Figure 1, it is the structural representation of existing process furnace, the body of heater of existing process furnace is divided into bell 11 ' and furnace bottom basin 12 ' two portions, at the top center of bell 11 ', stove motor 10 is set, the rotating shaft of stove motor 10 is connected with centrifugal impeller 4, the annular element strut member 56 for supporting annular element 5 is provided with in furnace bottom basin 12 ', the first flow deflector 302 has been hung by flow deflector pull bar 301 in bell 11 ' below, first flow deflector 302 is horizontally disposed with, the edge conjunction of the first flow deflector 302 has the second flow deflector 303, second flow deflector 303 is in tubular, second flow deflector 303 is divided into upper and lower two parts, after bell 11 ' and the docking of furnace bottom basin 12 ' cover, two portions up and down of second flow deflector 303 also dock and form an entirety, well heater 6 is provided with between the first flow deflector 302 and bell 11 '.Operationally, stove motor 10 drives centrifugal impeller 4 to rotate, and centrifugal impeller 4 driving gas circulates along the direction of arrow in the figure, and well heater 6 pairs of gases heat, and transmission of heat by convection is carried out on the surface of gas and annular element 5.
State in realization in the process of technical scheme, contriver finds that in prior art, at least there are the following problems:
1, in body of heater for account for the ratio of all gas in body of heater lower with the gas of annular element heat exchange, namely there is larger a part of gas actual not and annular element transmission of heat by convection in body of heater, process furnace is not for compact annular element, and cause the energy consumption of process furnace very large, heat exchange rate is but very low.Particularly when the flow velocity of air-flow is higher, the path that air-flow can preferentially be walked " hindering less ", in fact the surface of such annular element does not obtain directly washing away of the warm air of flow field high speed flow area, therefore the heating efficiency of process furnace to annular element is lower, and the intensification of annular element is slower.
2, warm air is through annular element, it is " horizontal plunder " annular element from outside to inside, and the inner side-wall of annular element is only fitting surface, the inner side-wall of annular element has but become the leeward side of hot blast in the prior art, the inner side-wall of annular element does not obtain directly fully washing away of hot blast, therefore, existing process furnace lacks specific aim to the heating on the surface of annular element, and the constructional feature not in conjunction with annular element itself designs.
3, warm air is when flowing through the outer side wall of annular element, upper surface and lower surface, be only " horizontal plunder " and mistake, air-flow washes away to these surfaces lacking direction property, according to the field-synergy theory of enhancement of heat transfer, the mode of washing away like this makes the field coordination of the convective heat exchange of these surfaces poor, the heat transfer coefficient on these surfaces is less, and the energy consumption causing process furnace is larger.
4, warm air is through annular element, several surface can be flowed through successively, in scour process, understand heat release due to air-flow and lower the temperature, therefore, not identical to the temperature of the warm air that different surfaces washes away, and it is not identical to the temperature of the warm air that the different positions on same surface washes away yet, so in general, being used for the quality (air-flow velocity and gas flow temperature) of air-flow of each position of washing away annular element exists larger difference, annular element be heated and uneven, cause the thermal stresses radial direction of annular element asymmetric, the assymmetrical deformation of annular element and radial deformation must be caused not to be maximize.
Summary of the invention
The object of this invention is to provide a kind of annular element to be heated targetedly, energy consumption is relatively lower, process furnace to the relatively higher annular element of the heating efficiency of annular element.
For achieving the above object, the invention provides a kind of process furnace of annular element, it comprises body of heater, first centrifugal impeller and drive the stove motor of described first centrifugal impeller, the first diaphragm is provided with successively from top to bottom in described body of heater, second diaphragm and the 3rd diaphragm, in the top inner wall of described body of heater, first diaphragm, second diaphragm, the first gas channel is formed successively from top to bottom between 3rd diaphragm and the bottom interior wall of described body of heater, second gas channel, 3rd gas channel and the 4th gas channel, in described second gas channel and the 4th gas channel, be equipped with air-flow add heat accelerator, described first centrifugal impeller is arranged between described first diaphragm and the second diaphragm, the inner side-wall of annular element abuts with the outward flange of the outward flange of described first diaphragm and the 3rd diaphragm, the upper surface of annular element, the top inner wall of lower surface and outer side wall and described body of heater, bottom interior wall and inner side-wall form the 5th gas channel, described first centrifugal impeller driving gas circulates, gas enters the second gas channel from the air outlet of the first centrifugal impeller, add after heat accelerator through air-flow and clash into the inner side-wall of annular element, flow through the 3rd gas channel afterwards successively, 4th gas channel, the air intake vent of the first centrifugal impeller is entered after 5th gas channel and the first gas channel.
The process furnace of annular element provided by the invention, wherein said air-flow adds heat accelerator can comprise two heating intensifier rings, described heating intensifier ring has ringwise bump surface, the bump surface of described two heating intensifier rings is oppositely arranged, thermal source is provided with in the inside of described heating intensifier ring, two heating intensifier rings in described second gas channel are separately fixed on the lower surface of described first diaphragm and the upper surface of described second diaphragm, two heating intensifier rings in described 4th gas channel are separately fixed in the lower surface of described 3rd diaphragm and the bottom interior wall of described body of heater.
The process furnace of annular element provided by the invention, the part being positioned at the inner side at bump surface top of wherein said bump surface is the first annular surface, the part being positioned at the outside at bump surface top of described bump surface is the second annular surface, and the radial width of described first annular surface can be less than the radial width of described second annular surface.
The process furnace of annular element provided by the invention, the gradient of wherein said first annular surface first can become from inside to outside greatly and diminish, and the gradient of described second annular surface can diminish from first becoming outside to inside greatly.
The process furnace of annular element provided by the invention, the part being positioned at the inner side at bump surface top of wherein said bump surface is the first annular surface, the part being positioned at the outside at bump surface top of described bump surface is the second annular surface, under described thermal source can be embedded in described second annular surface.
The process furnace of annular element provided by the invention, wherein can be provided with multiple heat exchanging holes on described second annular surface, described heat exchanging holes is communicated to the surface of described thermal source.
The process furnace of annular element provided by the invention, wherein said multiple heat exchanging holes can distribute in multi-turn on described second annular surface, and described each circle heat exchanging holes can be put in fork arrangement on described second annular surface.
The process furnace of annular element provided by the invention, the degree of depth being positioned at the heat exchanging holes in outside in wherein said multiple heat exchanging holes can be deeper than the degree of depth of the heat exchanging holes being positioned at inner side.
The process furnace of annular element provided by the invention, wherein said thermal source can be electrical heating element.
The process furnace of annular element provided by the invention, wherein said 3rd diaphragm can comprise flat part and water conservancy diversion arc plate portion, and the preglabellar field in water conservancy diversion arc plate portion is connected with the outward flange of flat part, and the outward flange in water conservancy diversion arc plate portion abuts with the inner side-wall of annular element.
The process furnace of annular element provided by the invention, wherein can be provided with the second centrifugal impeller between described 3rd diaphragm and the bottom interior wall of described body of heater, gas stream enters the air intake vent of described second centrifugal impeller after described 3rd gas channel, and flows into described 4th gas channel from the air outlet of described second centrifugal impeller.
The process furnace of annular element provided by the invention, the diameter of wherein said second centrifugal impeller can be greater than the diameter of described first centrifugal impeller.
The process furnace of annular element provided by the invention, wherein can be provided with multiple bolt hole on described annular element, flow splitter is provided with in described 5th gas channel, described flow splitter abuts with the outer side wall of described annular element, and a part of gas in described 5th gas channel converges with another part gas in described 5th gas channel after flowing through described bolt hole via the inner side of flow splitter.
The process furnace of annular element provided by the invention, wherein can be provided with wedge edge on described flow splitter, and described wedge edge is positioned at the lower rim of the medial surface of described flow splitter.
The process furnace of annular element provided by the invention, wherein can also be provided with flow splitter strut member in described body of heater, and the lower end of described flow splitter strut member is fixed in the bottom interior wall of described body of heater, and described flow splitter is fixed on the upper end of described flow splitter strut member.
The process furnace of annular element provided by the invention, wherein inducer can also be provided with in described body of heater, described inducer ringwise, the radial section of described inducer is curved, the lower rim of described inducer is positioned at outside described flow splitter, and the upper limb of described inducer to be positioned on described flow splitter and to be positioned at the outside of the outer side wall of described annular element.
The process furnace of annular element provided by the invention, the sheet number of wherein said inducer can be at least two panels, and the diameter being positioned at the upper limb of the inducer of inner side is less than the diameter of the upper limb of the inducer being positioned at outside.
The process furnace of annular element provided by the invention, the top inner wall of wherein said body of heater can have injection annular surface, the height of described injection annular surface is from becoming large outside to inside gradually, the outer peripheral diameter of described injection annular surface is greater than the external diameter of described annular element, and the diameter of the preglabellar field of described injection annular surface is greater than the internal diameter of described annular element.
The process furnace of annular element provided by the invention, the top inner wall of wherein said body of heater can have temperature compensation annular surface, and the radial section line of described temperature compensation annular surface forms at least one pointed tooth stretched out downwards.
The process furnace of annular element provided by the invention, the number of wherein said pointed tooth can be at least two, and the height being positioned at the crown of the described pointed tooth of inner side is lower than the height of crown of described pointed tooth being positioned at outside.
The process furnace of annular element provided by the invention, the limit being positioned at outside of wherein said pointed tooth can be camber line limit, and the limit being positioned at inner side of described pointed tooth is straight line.
The process furnace of annular element provided by the invention, wherein said body of heater can comprise the cavity of top board, annular sealing cover and upper opening, the diameter of described opening is greater than the external diameter of described annular element, the outward flange of described annular sealing cover is connected with the edge seal of described opening, the preglabellar field of described annular sealing cover and the outward flange of described top board are tightly connected, and the external diameter of described top board is less than the internal diameter of described annular element.
The process furnace of annular element provided by the invention, wherein said annular sealing cover can comprise two semi-circular lids, and the two ends of one of them semi-circular lid and the two ends of another semi-circular lid are removably tightly connected respectively.
The process furnace of annular element provided by the invention, wherein said top board can comprise ring plate and service cover, the edge of described service cover is connected with the preglabellar field of described ring plate, between described service cover and described first diaphragm, be provided with cleaning apparatus, described cleaning apparatus is positioned at the top of the air intake vent of described first centrifugal impeller.
The process furnace of annular element provided by the invention, wherein said stove motor can be positioned at the below of described body of heater, and the rotating shaft of described stove motor is stretched in described body of heater, and described first centrifugal impeller is connected in the rotating shaft of described stove motor.
The process furnace of annular element provided by the invention, wherein can be connected with frequency transformer on described stove motor.
The main beneficial effect of the process furnace of annular element provided by the invention is, the gas flowing through the second gas channel clashes into the inner side-wall of annular element after adding heat accelerator through air-flow, flow through the gas of the 4th gas channel on other surfaces adding heat accelerator backlash brush annular element through air-flow, air-flow adds heat accelerator all to accelerate gas and heats before each surface of air scour annular element, improve the flow velocity of gas, enhance the convective heat exchange of each surface of annular element generally, improve the heating efficiency to annular element.And the air-flow flowing through the second gas channel is just clashed into by the inner side-wall of the annular element heated needing most targetedly, in this shock air-flow, most warm air all take part in transmission of heat by convection, volume for the warm air conducted heat is compacter, saves unnecessary energy consumption.On the other hand, warm air just clashes into the inner side-wall of annular element, not only make the inner side-wall of annular element in axial direction be heated evenly, and the angle also reduced between the velocity vector of air-flow and thermograde, improve the field coordination of the convective heat exchange at the inner side-wall place of annular element, enhance the heat transfer at the inner side-wall place of annular element.In addition, after air-flow is to the inner side-wall heating of annular element, in the 4th gas channel, air-flow adds heat accelerator and again carries out acceleration heating to air-flow, and then carry out heat exchange with the outer side wall of annular element, thus compensate for and carry out the energy waste after heat exchange with inner side-wall, the inner side-wall of annular element and outer side wall are heated more balanced.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing process furnace;
Fig. 2 is the structural representation of the process furnace of the annular element of the embodiment of the present invention one;
Fig. 3 is the part longitudinal section view that the air-flow of the embodiment of the present invention one adds heat accelerator;
Fig. 4 is the perspective view that the air-flow of the embodiment of the present invention one adds heat accelerator;
Fig. 5 is the structural representation of the process furnace of the annular element of the embodiment of the present invention two;
Fig. 6 is the structural representation of the annular element of the embodiment of the present invention two;
Fig. 7 is the vertical view of the annular sealing cover of the embodiment of the present invention two.
Drawing reference numeral illustrates:
10-stove motor; 101-rotating shaft; 102-frequency transformer; The top inner wall of 11-body of heater; 111-injection annular surface; 112-temperature compensation annular surface; The bottom interior wall of 12-body of heater; The inner side-wall of 13-body of heater; 14-top board; 141-ring plate; 142-service cover; 15-annular sealing cover; 151-semi-circular lid; 16-cavity; 11 '-bell; 12 '-furnace bottom basin; 21-first diaphragm; 22-second diaphragm; 23-the 3rd diaphragm; 301-flow deflector pull bar; 302-first flow deflector; 303-second flow deflector; 31-first gas channel; 32-second gas channel; 33-the 3rd gas channel; 34-the 4th gas channel; 35-the 5th gas channel; 4-centrifugal impeller; 41-first centrifugal impeller; 42-second centrifugal impeller; 5-annular element; The inner side-wall of 51-annular element; The upper surface of 52-annular element; The lower surface of 53-annular element; The outer side wall of 54-annular element; 55-bolt hole; 56-annular element strut member; 6-well heater; 61-heats intensifier ring; 611-thermal source; 612-bump surface; 6121-first annular surface; 6122-second annular surface; 61221-heat exchanging holes; 7-flow splitter; 71-wedge edge; 72-flow splitter strut member; 8-inducer; 9-cleaning apparatus.
Embodiment
Be described in detail below in conjunction with the process furnace of accompanying drawing to the annular element of the embodiment of the present invention.
Embodiments of the invention redesign based on the structure of field coordination principle to the process furnace of annular element, for ease of understanding, first simply introduce the field-synergy theory of enhancement of heat transfer at this.
For the convective heat exchange problem of hot gas flow heating annular element, move owing to there being hot gas flow and certainly exist a fluid velocity field, or claim flow field, it is a vectorial field.In addition the temperature of hot gas flow is uneven, also there is the temperature field of a hot gas flow, due to us it is of concern that heat transportation speed, therefore in discussion, replaces temperature field more convenient with temperature gradient field (or claiming heat flow field).Do the process of two-dimensional columns coordinate with annular element radial direction, the energy equation of convective heat exchange is:
Wherein λ is the thermal conductivity of fluid medium, and ρ is density, and Cp is specific heat capacity.For warm air and the annular element transmission of heat by convection without phase transformation, the thinning frictional belt of every energy, increases the disturbance of airflow, impels each several part mixing in hot gas flow and the measure of velocity slope that increases on annular element wall can enhancement of heat transfer.From the technology mechanism analysis of strengthening hot gas flow single-phase convection heat-transfer, the convective heat exchange energy equation of warm air boundary layer type is obtained as integration annular element superficial air thermal-boundary-leyer thickness:
Wherein q
wbe the heat that solid wall surface exchanges between fluid and solid, i.e. the quantity of heat convection, δ t is thermal-boundary-leyer thickness.Can be seen by above formula, when density, level pressure specific heat capacity of mass, thermal conductivity (thermal conductivity) give timing, the characteristic of flow field and temperature gradient field (or heat flow field) just determines borderline hot-fluid, just determines borderline convection transfer rate.So, there are two vectorial fields in convective heat exchange territory:
Velocity field
Temperature gradient field
Or three scalar fields:
Speed absolute value
Thermograde absolute value
Included angle cosine field cos β (x, y, z)
According to the operation rule of vector, have
under certain speed and thermograde, the angle β reduced between the two is the effective measure of enhancement of heat transfer.Be no matter the flowing of boundary layer type or have the flowing of backflow, under certain speed and thermograde, need to strengthen convective heat exchange, the angle (this thought is called " field coordination principle ") between speed and thermograde will be reduced in fact exactly.Field coordination principle has disclosed the essence of strengthening convective heat exchange, and thinning frictional belt and its essence of disturbance increased in airflow are exactly to reduce the angle between speed and thermograde.Present three aspects of synergic agent of velocity field and temperature gradient field:
(1) the included angle cosine value of velocity vector and temperature gradient vector is large as much as possible, namely the angle β of two vectors should little as far as possible (β < 90 °), or large as far as possible (β > 90 °);
(2) fluid velocity profile and temperature profile are as far as possible evenly (under Peak Flow Rate and the certain condition of the temperature difference);
(3) make the large value in three scalar fields as far as possible and be worth collocation greatly, that is making the large value in three scalar fields appear at some region in whole field as far as possible as far as possible simultaneously.
In order to the degree that the velocity field in energy quantitative description and more different convective heat exchange situation and heat flow field are worked in coordination with, have the concept of a field coordination number, field coordination number Fc is expressed as:
Wherein, Nu is the nusselt number of convective heat exchange, and Re is the Reynolds number of fluid flow state, and Pr is the Prandtl number of fluid.
It is worthy of note, although the theory of enhancement of heat transfer has developed the long period, but the design of existing process furnace does not incorporate corresponding knowwhy, the process furnace how going structure field coordination degree higher for annular element has problem to be solved, and embodiments of the invention are just based on such theoretical basis, and specifically in conjunction with constructional feature and the heating environment of annular element, creatively propose the process furnace of the following embodiment of the present invention.
Embodiment one
As shown in Figure 2, it is the structural representation of the process furnace of the annular element of the embodiment of the present invention one, the process furnace of the annular element of the present embodiment comprises body of heater, the stove motor 10 of the first centrifugal impeller 41 and driving the first centrifugal impeller 41, the first diaphragm 21 is provided with from top to bottom successively in body of heater, second diaphragm 22 and the 3rd diaphragm 23, in the top inner wall 11 of body of heater, first diaphragm 21, second diaphragm 22, the first gas channel 31 is formed from top to bottom successively between 3rd diaphragm 23 and the bottom interior wall 12 5 of body of heater, second gas channel 32, 3rd gas channel 33 and the 4th gas channel 34, in the second gas channel 32 and the 4th gas channel 34, be equipped with air-flow add heat accelerator, first centrifugal impeller 41 is arranged between the first diaphragm 21 and the second diaphragm 22, the inner side-wall 51 of annular element 5 abuts with the outward flange of the outward flange of the first diaphragm 21 and the 3rd diaphragm 23, the upper surface 52 of annular element 5, the top inner wall 11 of lower surface 53 and outer side wall 54 and body of heater, bottom interior wall 12 and inner side-wall 13 form the 5th gas channel 35, first centrifugal impeller 41 driving gas circulates, gas enters the second gas channel 32 from the air outlet of the first centrifugal impeller 41, add after heat accelerator through air-flow and clash into the inner side-wall 51 of annular element 5, flow through the 3rd gas channel 33 afterwards successively, 4th gas channel 34, the air intake vent of the first centrifugal impeller 41 is entered after 5th gas channel 35 and the first gas channel 31.
In the present embodiment, first gas channel also can be described as the first busway, 3rd gas channel can be described as the 3rd busway, second gas channel can be described as the second spoke circulation road, 4th gas channel can be described as the 4th spoke circulation road, " busway " and " spoke circulation road " is named according to the feature that flows to of gas, and gas is from periphery to center flow in " busway ", and gas flows to the periphery at " spoke circulation road " Nei Shicong center.
In the process furnace of the annular element of the present embodiment, the gas flowing through the second gas channel 32 clashes into the inner side-wall 51 of annular element 5 after adding heat accelerator through air-flow, flow through the gas of the 4th gas channel 34 on other surfaces adding heat accelerator backlash brush or impact annular element 5 through air-flow, air-flow adds heat accelerator all to accelerate gas and heats before each surface of air scour annular element 5, improve the flow velocity of gas, enhance the convective heat exchange of each surface of annular element 5 generally, improve the heating efficiency to annular element 5.And the air-flow flowing through the second gas channel 32 is just clashed into by the inner side-wall 51 of the annular element heated needing most targetedly, in this shock air-flow, most warm air all take part in transmission of heat by convection, volume for the warm air conducted heat is compacter, saves unnecessary energy consumption.On the other hand, warm air just clashes into the inner side-wall 51 of annular element, not only make the inner side-wall 51 of annular element in axial direction be heated evenly, and the angle also reduced between the velocity vector of air-flow and thermograde, improve the field coordination of the convective heat exchange at inner side-wall 51 place of annular element, enhance the heat transfer at inner side-wall 51 place of annular element.In addition, after air-flow heats the inner side-wall 51 of annular element, in the 4th gas channel 34, air-flow adds heat accelerator and again carries out acceleration heating to air-flow, and then carry out heat exchange with the outer side wall 54 of annular element, thus compensate for and carry out the energy waste after heat exchange with inner side-wall 51, make the inner side-wall 51 of annular element be heated more balanced with outer side wall 54.
Preferably, the 3rd diaphragm 23 can comprise flat part 231 and water conservancy diversion arc plate portion 232, and the preglabellar field in water conservancy diversion arc plate portion 232 is connected with the outward flange of flat part 231, and the outward flange in water conservancy diversion arc plate portion 232 abuts with the inner side-wall 51 of annular element 5.Water conservancy diversion arc plate portion 232 carries out water conservancy diversion to the gas after the inner side-wall 51 having clashed into annular element 5, gas successfully can be completed and turn to and flow into the 3rd gas channel 33.In the device structure of reality, there is certain interval between the stove motor 10 that the 3rd diaphragm 23 and should be in central position, make gas can enter the 4th gas channel 34 from the 3rd gas channel 33.
Air-flow adds heat accelerator can adopt the existing device with the function of heating and acceleration air-flow, or adopt the combination of airflow heating device and flow accelerator, further, the process furnace of the annular element of the present embodiment adds heat accelerator to air-flow to be improved, as shown in Figure 3, its air-flow being the embodiment of the present invention one adds the part longitudinal section view of heat accelerator, this Figure only shows the cross section structure of half heating intensifier ring, heating intensifier ring 3 is ring structure on the whole, eliminates the cross section structure of symmetrical side in figure.The air-flow of the present embodiment adds heat accelerator and comprises two heating intensifier rings 61, heating intensifier ring 61 has ringwise bump surface 612, the bump surface 612 of two heating intensifier rings 61 is oppositely arranged, thermal source 611 is provided with in the inside of heating intensifier ring 61, wherein, thermal source 611 can be multiple, preferably, is evenly distributed on whole heating intensifier ring circumferentially in equally spaced mode.See Fig. 2, two heating intensifier rings 61 in second gas channel 32 are separately fixed on the lower surface of the first diaphragm 21 and the upper surface of the second diaphragm 22, and two heating intensifier rings 61 in the 4th gas channel 34 are separately fixed in the lower surface 23 of the 3rd diaphragm and the bottom interior wall 13 of body of heater.The bump surface of two heating intensifier rings is relative, gas flows to after between the second annular surface between the first annular surface, the pressure energy of gas transforms to kinetic energy, the flow velocity of gas can improve, therefore two heating intensifier rings can accelerate air-flow without the need to the input of other power, there is the simple advantage of structure, and thermal source (such as, can electrical heating element be adopted) be arranged on the inside of heating intensifier ring, thermal source can not cause stop to air-flow while borrowing the bump surface of heating intensifier ring to heat gas, than ever thermal source is arranged on the mode that the stream of air-flow is middle mutually, can significantly reduce unnecessary energy waste, more energy-conservation effect can be reached on the whole, simultaneously, reduce the element premature failure of directly washing away electrical heating element surface vibration and causing, in addition, it is the airflow channel structure first tightening up fast and then widen gradually that air-flow adds the gas channel that heat accelerator formed, and electrical heating element is arranged in the inside of the divergent segment of heating intensifier ring, here stream swirl can be produced, thus heat exchange can be carried out with the fin of high collaborative e-commerce and electrical heating element, in addition, divergent segment surface perforate, also outside radiation heat transfer and the cooling of self is convenient to, be beneficial to electrical heating element to be cooled, be beneficial to and extend electrical heating element work-ing life.
As shown in Figure 3, further, the part being positioned at the inner side at bump surface 612 top of bump surface 612 is the first annular surface 6121, the part being positioned at the outside at bump surface 612 top of bump surface 612 is the radial width that the radial width of the second annular surface 6122, first annular surface 6121 can be less than the second annular surface 6122." radial width " mentioned here refers to projection width in radial directions, the top of said bump surface refers to, for diaphragm, the vertex of the curved surface that the bump surface heating intensifier ring 3 is formed is (for whole acceleration heating ring, vertex forms a loop wire) position at place, as shown in Figure 3, from sectional view, top is the position at the place, summit of the curve shown in cross section.Preferably, the gradient of the first annular surface 6121 first becomes from inside to outside greatly and diminishes, and the gradient of the second annular surface 6122 diminishes from first becoming outside to inside greatly.Adopt the first annular surface of such shape and the second annular surface to be easier to the air-flow obtained under high reynolds number air-flow acceleration, and gas stream temperature and flow velocity after heating intensifier ring can be improved simultaneously, and this raising degree is controlled.Be not difficult to find out from Fig. 3, the cross section profile of two bump surface 612 and the cross section of inboard wall profile similarity of Laval nozzle.
Thermal source 611 can be embedded in the optional position in heating intensifier ring 61, and preferably, as shown in Figure 3, thermal source 611 can be embedded in the second annular surface 6122 times.The air-flow velocity that the air-flow velocity at the second annular surface 6122 place compares the first annular surface 6121 place is higher, and turbulence level is higher, and thermal source 611 utilizes the second annular surface 6122 to carry out transmission of heat by convection, and field coordination is higher, higher to the heating rate of air-flow.What is more important: this thermal source is positioned at the throat of convergent-divergent runner after, because large passageways dilate dihedral becomes serious " negative sequence harmonic ", frictional belt is separated from wall and forms whirlpool, enhances air-flow and is constantly taken away by heat source surface heat.Be placed among runner compared to by electrical heating element, greatly reduce system flow resistance, avoid the loss that impact shock caused to the electrical heating element life-span simultaneously.
Further, as shown in Figure 4, it is the perspective view that the air-flow of the embodiment of the present invention one adds heat accelerator, and the second annular surface 6122 is provided with multiple heat exchanging holes 61221, and heat exchanging holes 61221 is communicated to the surface of thermal source 611.Heat exchanging holes 61221 makes thermal source 611 outwards conduct heat in the mode of radiative transfer in addition, and form turbulent flow when can promote airflow passes the second annular surface 6122, heat exchange between strengthening thermal source 611 and air-flow, thus the energy of thermal source 611 can be made generally to be delivered to quickly in air-flow, make the temperature of thermal source 611 unlikely too high, the work-ing life of thermal source 611 can be extended while strengthening heat-transfer effect.
As shown in Figure 4, preferably, multiple heat exchanging holes 61221 can the distribution in multi-turn on the second annular surface 6122.Each circle heat exchanging holes 61221 can be arranged in in-line arrangement on the second annular surface 6122, preferably, each circle heat exchanging holes 61221 can be put (namely the position of two adjacent rings heat exchanging holes is interlaced) in fork arrangement on the second annular surface 6122, put in fork arrangement multi-turn heat exchanging holes can improve the field coordination of the second annular surface 6122 place convective heat exchange, the convective heat exchange at strengthening the second annular surface 6122 place further.
Preferably, the degree of depth being positioned at the heat exchanging holes in outside in multiple heat exchanging holes 61221 is deeper than the degree of depth of the heat exchanging holes being positioned at inner side, namely multiple heat exchanging holes 61221 presents at heating intensifier ring 61 rule that the degree of depth from inside to outside deepens gradually in the radial direction, and the thermal source that can make full use of like this in heat exchanging holes 61221 improves the speed of convective heat exchange.
Thermal source 611 can adopt the various device with heating function, the steel pipe of high temperature heat conductive oil is such as had at Bottomhole pressure, preferably, thermal source 611 can adopt electrical heating element, electrical heating element has the advantage of low, the easy laying of cost, be convenient to realize electrical control, and when realizing electrical control to electrical heating element, speed of response is faster.
In order to support annular element 5, as shown in Figure 2, the bottom interior wall 12 of body of heater is provided with multiple annular element strut member 56, multiple annular element strut member 56 can be uniformly distributed at hoop.
In order to drive the first centrifugal impeller 41, the rotating shaft 101 of stove motor 10 is stretched in body of heater, and the first centrifugal impeller 41 is connected in the rotating shaft 101 of stove motor 10.Stove motor 10 can be arranged on the top of body of heater, as being arranged on top board or being embedded in top board.
Preferably, stove motor 10 is positioned at the below of body of heater, and the rotating shaft 101 of stove motor 10 is stretched in body of heater, and the first centrifugal impeller 41 is connected in the rotating shaft 101 of stove motor 10.Can directly support stove motor 10 below body of heater and fix like this, compare and stove motor 10 is arranged on body of heater, body of heater does not need to support stove motor 10, because this reducing the support strength requirement to body of heater, thus the manufacturing cost of the process furnace of annular element can be reduced, and stove with this focus of motor 10 under, directly it is fixed and the stability of the process furnace of annular element can be made stronger.
Embodiment two
As shown in Figure 5, it is the structural representation of the process furnace of the annular element of the embodiment of the present invention two, the process furnace of the annular element of the embodiment of the present invention two and the difference of embodiment one are, the second centrifugal impeller 42 is provided with between the 3rd diaphragm 23 and the bottom interior wall 12 of body of heater, gas stream enters the air intake vent of the second centrifugal impeller 42 after the 3rd gas channel 33, and flows into the 4th gas channel 34 from the air outlet of the second centrifugal impeller 42.
Gas pressure after the inner side-wall clashing into annular element 5 reduces, second centrifugal impeller 42 boosted to air-flow before air flow direction the 4th gas channel 34, the speed on other surfaces of airflow strikes annular element 5 is got a promotion, thus enhance the convective heat exchange on other surfaces except inner side-wall of annular element, reduce the gap between the inner side-wall of annular element and the heat transfer efficiency on other surfaces, make annular element 5 more even in the thermal expansion of radial direction.
Preferably, the diameter of the second centrifugal impeller 42 is greater than the diameter of the first centrifugal impeller 41.The inner side-wall flowing through annular element is compared on other surfaces of airflow passes annular element, the flowing stroke of air-flow is longer, link is more, the resistance run into is larger, the diameter that the diameter of the second centrifugal impeller 42 is greater than the first centrifugal impeller 41 has enough eroding velocities when can overcome larger resistance to flow to ensure other surfaces of airflow passes annular element, thus makes being heated of the surfaces externally and internally of annular element can be more even.
Further, the process furnace of the annular element of the present embodiment also special situation having a bolt hole for annular element improves, as shown in Figure 6, it is the structural representation of the annular element of the embodiment of the present invention two, the annular element of the present embodiment is with the difference of the annular element of embodiment before, annular element 5, except having the outer side wall 54 of the inner side-wall 51 of annular element, the upper surface 52 of annular element, the lower surface 53 of annular element and annular element, annular element 5 is also provided with multiple bolt hole 55.To this, the process furnace of the annular element of the present embodiment is provided with flow splitter 7 in the 5th gas channel, flow splitter 7 abuts with the outer side wall 54 of annular element 5, converges after a part of gas in the 5th gas channel flows through bolt hole 55 via the inner side of flow splitter 7 with another part gas in the 5th gas channel.The gas flowing through the 4th gas channel is divided into two strands by flow splitter 7, wherein one gas flows through from the outside of flow splitter 7 and washes away the outer side wall 54 of annular element and the upper surface 52 of annular element, converge with one gas front and continue to wash away the upper surface 52 of annular element after another strand of gas has washed away from bolt hole 55, gas washes away to bolt hole 55 wall thickness being equivalent to and being thinned annular element 5, therefore improves heat transfer efficiency.On the other hand, the gas washing away the outer side wall 54 of annular element is the gas after flow splitter 7 is shunted, instead of the gas that after the lower surface 53 first having washed away annular element, temperature has reduced, therefore, the transmission of heat by convection at outer side wall 54 place of annular element 5 is unlikely weakened.Specifically when implementing, annular element 5 can be large quality, the large-sized bearing that current wind power generating set is commonly used.
Preferably, flow splitter 7 can be provided with wedge edge 71, wedge edge 71 is positioned at the lower rim of the medial surface of flow splitter 7.Namely air-flow is divided into two at wedge edge 71 place, and the wall of wedge edge 71 has guide functions to air-flow, avoids air-flow to underspeed when shunting.
In order to be fixed flow splitter 7, preferably, in body of heater, be also provided with flow splitter strut member 72, the lower end of flow splitter strut member 72 is fixed in the bottom interior wall 12 of body of heater, and flow splitter 7 is fixed on the upper end of flow splitter strut member 72.
The present embodiment has also made improvement to the enhancement of heat transfer at outer side wall 54 place of annular element, as shown in Figure 5, inducer 8 is also provided with in body of heater, inducer 8 ringwise, the radial section of inducer 8 is curved, the lower rim of inducer 8 is positioned at outside flow splitter 7, and the upper limb of inducer 8 to be positioned on flow splitter 7 and to be positioned at the outside of the outer side wall of annular element.Air-flow outside inducer 8 pairs of flow splitters 7 leads, the air-flow after guiding can be made just to clash into the outer side wall 54 of annular element, which reduce the angle between the velocity vector of the air-flow at outer side wall 54 place of annular element and thermograde, thus improve the field coordination of the convective heat exchange at outer side wall 54 place of annular element, enhance the convective heat exchange at outer side wall 54 place of annular element.In addition, the curved radial width shared by inducer 8 of radial section is less, and the diameter of whole process furnace can be made less, compacter.
Preferably, the sheet number of inducer 8 is at least two panels, and the diameter being positioned at the upper limb of the inducer 8 of inner side is less than the diameter of the upper limb of the inducer 8 being positioned at outside.Annular gap between the preglabellar field of such inducer 8 and the outer side wall 54 of annular element diminishes from top to bottom gradually, the blast pass of lower floor is upwards collected according to fluid continuity principle, avoids air-flow collect in the upper area of the outer side wall 54 of annular element and produce " choking phenomenon ".
Further, the top inner wall 11 of body of heater has injection annular surface 111, form between injection annular surface 111 and the upper surface 52 of inducer 8 and annular element from first shrinking the convergent-divergent passage expanded afterwards outside to inside, the outer peripheral diameter of injection annular surface 111 is greater than the external diameter of annular element 5, and the diameter of the preglabellar field of injection annular surface 111 is greater than the internal diameter of annular element 5.Such air-flow obtains when flowing through this variable cross-section convergent-divergent passage and accelerates and reduce static pressure, thus the air-flow can drawn in time in bolt hole, and then the gas flow rate at lower surface 53 place of annular element can be increased, the transmission of heat by convection at lower surface 53 place of strengthening annular element.
Due to wash away the upper surface 52 of annular element gas in some gas be desuperheated gas previously and after outer side wall 54 heat exchange of annular element, therefore, the temperature that the temperature of washing away the gas of the upper surface 52 of annular element compares the gas of the lower surface 53 washing away annular element is low, more impartial in order to make the upper and lower surface of annular element be heated, the present embodiment has made improvement further, as shown in Figure 5, the top inner wall 11 of body of heater has temperature compensation annular surface 112, and the radial section line of temperature compensation annular surface 112 forms at least one pointed tooth stretched out downwards.In the present embodiment, so-called " radial section line " refer to temperature compensation annular surface 112 line that intercepts by the cross section on radial direction because face intercept be line and face can not be called, therefore this line to be called " radial section line ".Gas is when flowing through the upper surface 52 of annular element, temperature compensation annular surface 112 pairs of air-flows lead, air-flow is made to clash into the upper surface 52 of annular element with certain angle, the angle between the velocity vector of the air-flow at upper surface 52 place of annular element and thermograde can be reduced like this, thus the transmission of heat by convection at upper surface 52 place of strengthening annular element, compensate the temperature of the upper surface of annular element, reduce the temperature difference of the upper and lower surface of annular element.
Preferably, the number of pointed tooth is at least two, and the height being positioned at the crown of the pointed tooth of inner side is lower than the height of crown of pointed tooth being positioned at outside.Air-flow is the upper surface 52 flowing through annular element from outside to inside, and in flow process, air-flow can lower the temperature because of heat release, and such pointed tooth distributes and the enhancement of heat transfer of the upper surface 52 of annular element is radially reached unanimity, make the expansion of annular element evenly.
Preferably, the limit being positioned at outside of pointed tooth is camber line limit, and the limit being positioned at inner side of pointed tooth is straight line.
The present embodiment has also made improvement in other respects, as shown in Figure 5, body of heater comprises the cavity 16 of top board 14, annular sealing cover 15 and upper opening, the diameter of this opening is greater than the external diameter of annular element 5, the outward flange of annular sealing cover 15 is connected with the edge seal of this opening, the preglabellar field of annular sealing cover 15 and the outward flange of top board 14 are tightly connected, and the external diameter of top board 14 is less than the internal diameter of annular element 5.When operation, when annular element 5 to be put into body of heater or is taken out from body of heater by needs, first can remove the annular sealing cover 15 of lighter in weight, with suspender, annular element 5 is sling, allow annular element 5 through the gap between the opening and the outward flange of top board 14 of cavity 16 vertically through, due to the lighter in weight of annular sealing cover 15, even can save the hoisting machinery for lifting by crane original big scale bell, thus reduction energy consumption, improve lifting production efficiency.Preferably, before, said injection annular surface 111 and temperature compensation annular surface 112 can be arranged on annular sealing cover 15.
Further, the present embodiment also improves the structure of annular sealing cover 15, as shown in Figure 7, it is the vertical view of the annular sealing cover of the embodiment of the present invention two, the annular sealing cover 15 of the present embodiment comprises two semi-circular lids 151, and the two ends of one of them semi-circular lid 151 and the two ends of another semi-circular lid 151 are removably tightly connected respectively.When the mobile annular sealing cover 15 of needs, two semi-circular lids 151 can be moved respectively, be divided into two semi-circular lids 151 respectively movement reduce the power of each mobile needs, the labour intensity of operation can be reduced further.
Further, as shown in Figure 5, the top board 14 of the present embodiment comprises ring plate 141 and service cover 142, the edge of service cover 142 is connected with the preglabellar field of ring plate 141, between service cover 142 and the first diaphragm 21, be provided with cleaning apparatus 9, cleaning apparatus 9 is positioned at the top of the air intake vent of the first centrifugal impeller 41.Cleaning apparatus 9 can remove dust in air-flow in the process of gas circulating flow and because of high temperature oxidation from the impurity that the surface of each parts comes off.Cleaning apparatus 9 is preferably macromolecular material filter screen, and it can absorb the above dust of 3-5 micron, greatly reduces impurity in stove, reduce inter alia at high temperature, and the impurity caused due to the coming off of zone of oxidation of other heating surface enters the phenomenon of bearing.As shown in Figure 5, preferably, stove motor 10 can be connected with frequency transformer 102, can be regulated the rotating speed of stove motor 10 by frequency transformer 102, by regulating frequency transformer 102 can reach preferred rotating speed, the first centrifugal impeller and the second centrifugal impeller are all operated under preferred operating mode.
Can be found out by above-mentioned embodiments of the invention, the process furnace of the annular element of the embodiment of the present invention utilizes the both stage impellers of inverted stove motor to transmit and heating air flow by " ring week convergent-divergent heating flow channel " (air-flow adds the passage that heat accelerator is formed) in its air outlet downstream respectively, air-flow and bearing heating surface is made directly to dock to be formed and clash into runner, in the first step (in the second gas channel 32), low-quality air-flow after shock annular element heat release four is loose is continuously introduced into second stage impeller (the second centrifugal impeller 42) air suction inlet, after second stage impeller reclaims the low-quality air-flow after higher level's shock, form the second stage with " ring week convergent-divergent heating flow channel " in downstream to boost and accelerate to heat transducing runner, especially air-flow transmitted and shunt, impact groove holds the lower surface of annular element, outside splitting streams is through the drainage of outer shroud flow-guiding channel (passage residing for inducer 8), carry out horizontal transport and impacting shaft bearing outer-ring outside surface, air-flow after shock accepts boost process and enters " forebay " (in first gas channel 31) and dock with cleaning apparatus in bearing upper surface, air-flow after cleaning apparatus introduces higher level impeller (the first centrifugal impeller 41) air suction inlet, thus form closed cycle boosting accelerated warming transmission shock heat release two-stage tandem relay transducing runner.The Internal and external cycle fitting surface of bearing and upper and lower end face obtain the continuous shock of one air-flow successively, because this transducing runner solves the supplementary question of shock energy successively in time, there is not the difference of airflow strikes energy grade.Here, after airflow strikes inner ring internal surface, flowed energy obtains next stage transducing runner in time and supplements, accelerate to air-flow through impeller boosting, convergent-divergent runner again, remove impact groove bearing outer-ring outside surface again after carrying the convergent-divergent runner divergent segment intensification of field coordination heat-transfer surface, " convergent-divergent runner " wherein possesses air-flow acceleration, field coordination heat exchange intensification dual-use function simultaneously.
In addition, from one-piece construction, only used a matrix material annular sealing thermal insulation lid, thoroughly solve the lifting of big scale bell heavy, hoisting machinery energy consumption and the problem taking man-hour, drastically increase lifting operation efficiency.In addition, after realization " one " continuous flow impact groove bears hot side heat release, reduction of speed " disordering ", flow quality can be recovered in time, still can again through boosting, accelerating, absorb heat, clash into next heating surface heat release, recovery, thus, give and need the swollen big scale of hot Peng, greatly quality bearing to create the very high convective heat exchange " field " of one " field coordination " degree, realize the height " nusselt number " under high " Reynolds number ", reach realization heating bearing and obtain the object that high surface heat transmission speed reduces energy consumption simultaneously.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (26)
1. a process furnace for annular element, is characterized in that, comprises body of heater, the first centrifugal impeller and drives the stove motor of described first centrifugal impeller,
The first diaphragm is provided with successively from top to bottom in described body of heater, second diaphragm and the 3rd diaphragm, in the top inner wall of described body of heater, first diaphragm, second diaphragm, the first gas channel is formed successively from top to bottom between 3rd diaphragm and the bottom interior wall of described body of heater, second gas channel, 3rd gas channel and the 4th gas channel, in described second gas channel and the 4th gas channel, be equipped with air-flow add heat accelerator, described first centrifugal impeller is arranged between described first diaphragm and the second diaphragm, the inner side-wall of annular element abuts with the outward flange of the outward flange of described first diaphragm and the 3rd diaphragm, the upper surface of annular element, the top inner wall of lower surface and outer side wall and described body of heater, bottom interior wall and inner side-wall form the 5th gas channel,
Described first centrifugal impeller driving gas circulates, gas enters the second gas channel from the air outlet of the first centrifugal impeller, add after heat accelerator through air-flow and clash into the inner side-wall of annular element, after flowing through the 3rd gas channel, the 4th gas channel, the 5th gas channel and the first gas channel afterwards successively, enter the air intake vent of the first centrifugal impeller.
2. the process furnace of annular element according to claim 1, it is characterized in that, described air-flow adds heat accelerator and comprises two heating intensifier rings, described heating intensifier ring has ringwise bump surface, the bump surface of described two heating intensifier rings is oppositely arranged, thermal source is provided with in the inside of described heating intensifier ring, two heating intensifier rings in described second gas channel are separately fixed on the lower surface of described first diaphragm and the upper surface of described second diaphragm, two heating intensifier rings in described 4th gas channel are separately fixed in the lower surface of described 3rd diaphragm and the bottom interior wall of described body of heater.
3. the process furnace of annular element according to claim 2, it is characterized in that, the part being positioned at the inner side at bump surface top of described bump surface is the first annular surface, the part being positioned at the outside at bump surface top of described bump surface is the second annular surface, and the radial width of described first annular surface is less than the radial width of described second annular surface.
4. the process furnace of annular element according to claim 3, is characterized in that, the gradient of described first annular surface first becomes from inside to outside greatly and diminishes, and the gradient of described second annular surface diminishes from first becoming outside to inside greatly.
5. the process furnace of annular element according to claim 2, it is characterized in that, the part being positioned at the inner side at bump surface top of described bump surface is the first annular surface, the part being positioned at the outside at bump surface top of described bump surface is the second annular surface, under described thermal source is embedded in described second annular surface.
6. the process furnace of annular element according to claim 5, is characterized in that, described second annular surface is provided with multiple heat exchanging holes, and described heat exchanging holes is communicated to the surface of described thermal source.
7. the process furnace of annular element according to claim 6, is characterized in that, described multiple heat exchanging holes is the distribution in multi-turn on described second annular surface, and each circle heat exchanging holes is put in fork arrangement on described second annular surface.
8. the process furnace of annular element according to claim 6, is characterized in that, the degree of depth being positioned at the heat exchanging holes in outside in described multiple heat exchanging holes is deeper than the degree of depth of the heat exchanging holes being positioned at inner side.
9. the process furnace of annular element according to claim 2, is characterized in that, described thermal source is electrical heating element.
10. the process furnace of annular element according to claim 1, it is characterized in that, described 3rd diaphragm comprises flat part and water conservancy diversion arc plate portion, and the preglabellar field in water conservancy diversion arc plate portion is connected with the outward flange of flat part, and the outward flange in water conservancy diversion arc plate portion abuts with the inner side-wall of annular element.
The process furnace of 11. annular elements according to claim 1, it is characterized in that, the second centrifugal impeller is provided with between described 3rd diaphragm and the bottom interior wall of described body of heater, gas stream enters the air intake vent of described second centrifugal impeller after described 3rd gas channel, and flows into described 4th gas channel from the air outlet of described second centrifugal impeller.
The process furnace of 12. annular elements according to claim 11, is characterized in that, the diameter of described second centrifugal impeller is greater than the diameter of described first centrifugal impeller.
The process furnace of 13. annular elements according to claim 1, it is characterized in that, described annular element is provided with multiple bolt hole, flow splitter is provided with in described 5th gas channel, described flow splitter abuts with the outer side wall of described annular element, and a part of gas in described 5th gas channel converges with another part gas in described 5th gas channel after flowing through described bolt hole via the inner side of flow splitter.
The process furnace of 14. annular elements according to claim 13, is characterized in that, described flow splitter is provided with wedge edge, and described wedge edge is positioned at the lower rim of the medial surface of described flow splitter.
The process furnace of 15. annular elements according to claim 13, it is characterized in that, in described body of heater, be also provided with flow splitter strut member, the lower end of described flow splitter strut member is fixed in the bottom interior wall of described body of heater, and described flow splitter is fixed on the upper end of described flow splitter strut member.
The process furnace of 16. annular elements according to claim 13, it is characterized in that, also inducer is provided with in described body of heater, described inducer ringwise, the radial section of described inducer is curved, the lower rim of described inducer is positioned at outside described flow splitter, and the upper limb of described inducer to be positioned on described flow splitter and to be positioned at the outside of the outer side wall of described annular element.
The process furnace of 17. annular elements according to claim 16, is characterized in that, the sheet number of described inducer is at least two panels, and the diameter being positioned at the upper limb of the inducer of inner side is less than the diameter of the upper limb of the inducer being positioned at outside.
The process furnace of 18. annular elements according to claim 16, it is characterized in that, the top inner wall of described body of heater has injection annular surface, form between described injection annular surface and the upper surface of described inducer and annular element from first shrinking the convergent-divergent passage expanded afterwards outside to inside, the outer peripheral diameter of described injection annular surface is greater than the external diameter of described annular element, and the diameter of the preglabellar field of described injection annular surface is greater than the internal diameter of described annular element.
The process furnace of 19. annular elements according to claim 1, is characterized in that, the top inner wall of described body of heater has temperature compensation annular surface, and the radial section line of described temperature compensation annular surface forms at least one pointed tooth stretched out downwards.
The process furnace of 20. annular elements according to claim 19, is characterized in that, the number of described pointed tooth is at least two, and the height being positioned at the crown of the described pointed tooth of inner side is lower than the height of crown of described pointed tooth being positioned at outside.
The process furnace of 21. annular elements according to claim 19, is characterized in that, the limit being positioned at outside of described pointed tooth is camber line limit, and the limit being positioned at inner side of described pointed tooth is straight line.
The process furnace of 22. annular elements according to claim 1, it is characterized in that, described body of heater comprises the cavity of top board, annular sealing cover and upper opening, the diameter of described opening is greater than the external diameter of described annular element, the outward flange of described annular sealing cover is connected with the edge seal of described opening, the preglabellar field of described annular sealing cover and the outward flange of described top board are tightly connected, and the external diameter of described top board is less than the internal diameter of described annular element.
The process furnace of 23. annular elements according to claim 22, is characterized in that, described annular sealing cover comprises two semi-circular lids, and the two ends of one of them semi-circular lid and the two ends of another semi-circular lid are removably tightly connected respectively.
The process furnace of 24. annular elements according to claim 22, it is characterized in that, described top board comprises ring plate and service cover, the edge of described service cover is connected with the preglabellar field of described ring plate, between described service cover and described first diaphragm, be provided with cleaning apparatus, described cleaning apparatus is positioned at the top of the air intake vent of described first centrifugal impeller.
The process furnace of 25. annular elements according to claim 1, it is characterized in that, described stove electricity consumption machine is positioned at the below of described body of heater, and the rotating shaft of described stove motor is stretched in described body of heater, and described first centrifugal impeller is connected in the rotating shaft of described stove motor.
The process furnace of 26. annular elements according to claim 1, is characterized in that, described stove motor is connected with frequency transformer.
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| CN201410345152.5A CN104152663B (en) | 2014-07-18 | 2014-07-18 | The process furnace of annular element |
| KR1020150092207A KR101690119B1 (en) | 2014-07-18 | 2015-06-29 | A heating furnace having annular parts |
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| CN107435090B (en) * | 2016-05-25 | 2019-01-01 | 新疆金风科技股份有限公司 | A kind of energy-saving vibration-damping device and heating furnace for heating furnace |
| CN107435095B (en) * | 2016-05-25 | 2019-01-01 | 新疆金风科技股份有限公司 | A kind of support device of heating furnace and its annular heated object |
| CN106124795B (en) * | 2016-08-17 | 2022-07-29 | 凯迈（洛阳）气源有限公司 | Gyro wheel rotating speed testing device and blowing system thereof |
| CN106282527B (en) * | 2016-09-29 | 2018-04-13 | 北京金风科创风电设备有限公司 | A kind of heating furnace for annular element heating |
| CN108201902B (en) * | 2016-12-16 | 2020-06-26 | 中国石油化工股份有限公司 | TMRadConstant temperature box of tester |
| CN108344194A (en) * | 2017-12-13 | 2018-07-31 | 西安航天化学动力厂 | Vessel is less than 1m3Air force heating furnace |
| CN114133134A (en) * | 2021-12-30 | 2022-03-04 | 索奥斯(广东)玻璃技术股份有限公司 | Efficient and energy-saving convection system of glass heating furnace |
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| US5441242A (en) * | 1992-12-04 | 1995-08-15 | Ebner Industrieofenbau Gesellschaft M.B.H. | Apparatus for contacting surfaces of workpieces with a flowing gas |
| JP2007332411A (en) * | 2006-06-13 | 2007-12-27 | Nsk Ltd | Method for manufacturing bearing ring of rolling bearing |
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| CN103088200A (en) * | 2012-12-31 | 2013-05-08 | 北京金风科创风电设备有限公司 | Heating furnace |
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| US4953365A (en) * | 1989-06-28 | 1990-09-04 | Liquid Carbonic Corporation | Helical conveyor freezer |
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| US5441242A (en) * | 1992-12-04 | 1995-08-15 | Ebner Industrieofenbau Gesellschaft M.B.H. | Apparatus for contacting surfaces of workpieces with a flowing gas |
| JP2007332411A (en) * | 2006-06-13 | 2007-12-27 | Nsk Ltd | Method for manufacturing bearing ring of rolling bearing |
| CN201971859U (en) * | 2010-12-27 | 2011-09-14 | 苏州新长光热能科技有限公司 | Efficient air circulation flow guiding device applicable to thermal treatment furnaces |
| CN103088200A (en) * | 2012-12-31 | 2013-05-08 | 北京金风科创风电设备有限公司 | Heating furnace |
| CN103629838A (en) * | 2013-11-10 | 2014-03-12 | 西安航天化学动力厂 | Aerodynamic heating furnace |
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