CN108278221A - Inlet seal structure and wind turbine - Google Patents
Inlet seal structure and wind turbine Download PDFInfo
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- CN108278221A CN108278221A CN201810383673.8A CN201810383673A CN108278221A CN 108278221 A CN108278221 A CN 108278221A CN 201810383673 A CN201810383673 A CN 201810383673A CN 108278221 A CN108278221 A CN 108278221A
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- seal
- current collector
- shroud
- sealing
- inlet
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- 238000007789 sealing Methods 0.000 claims abstract description 83
- 230000003139 buffering effect Effects 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001869 rapid Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of inlet seal structure and wind turbines, belong to wind turbine technical field.Inlet seal structure includes shroud and current collector；Shroud is rotatably connect with current collector, current collector is rotary structure, current collector is coaxially disposed with shroud, the fixing end of current collector with Blower Housing for connecting, relative to fixing end close to shroud, connecting pin is provided with the circumferentially distributed first seal around current collector for the connecting pin of current collector, and first seal forms buffering area with current collector, one end of the close current collector of shroud is stretched into buffering area, has the first gap between first seal and shroud.The inlet seal structure, principle is sealed using tooth, and turbulent flow is generated when air-flow being made to flow through sealing structure to consume the energy of leakage air-flow, to reduce internal leakage so that influence of the leakage air-flow to impeller channel flow field reduces.Using the wind turbine of above-mentioned inlet seal structure, inlet seal effect is improved, ensure that the operational efficiency of wind turbine.
Description
Technical field
The present invention relates to wind turbine technical fields, in particular to a kind of inlet seal structure and wind turbine.
Background technology
In the process of running, there are many mechanical power loss for wind turbine.According to the pass with impeller and the fluid flow conveyed
System can be divided into mechanical loss, volumetric loss and flow losses.Volumetric loss therein be due to wind turbine rotatable parts with it is static
There are caused by gap for component.When wheel rotation, pressure difference is generated in gap both sides, part is made to obtain the stream of energy by impeller
Body is leaked by gap to low-pressure side from high-pressure side.
General centrifugal blower inlet seal is made of air inlet, shroud, as shown in Figure 1, air inlet 1 is static structures, it is preceding
Disk 2 is rotational structure.Air current flow direction is when centrifugal blower is run：Air-flow enters impeller by impeller upstream canal region 4
Flow passage area 5 flows to volute of blower flow passage area 3.3 pressure of region is high, and region 4,5 pressure of region are low.Due to differential pressure action, gas
Stream will flow to region 4, region 5, referred to as internal leakage from region 3.Gap between internal leakage and air inlet 1, shroud 2 is at positive
It closes, the pressure difference between region 3 and region 4, region 5 is positively correlated.General centrifugal blower inlet seal structure leakage rate is larger, right
The influence in impeller channel flow field is also larger.
Invention content
It is an object of the invention in view of the above-mentioned problems, provide a kind of inlet seal structure, seal principle using tooth, make air-flow
Turbulent flow is generated when flowing through sealing structure to consume the energy of leakage air-flow, to reduce internal leakage so that leakage air-flow is to leaf
The influence for taking turns fluid flow on channel reduces, and the above problem is made to be improved.
It is another object of the present invention to provide a kind of wind turbines to improve air inlet using above-mentioned inlet seal structure
Sealing effect ensure that the operational efficiency of wind turbine.
The invention is realized in this way：
The embodiment provides a kind of inlet seal structures, are applied to centrifugal blower, including shroud and current collector；
The shroud is rotatably connect with the current collector, the current collector be rotary structure, the current collector with
The shroud coaxial arrangement, the current collector include fixing end and connecting pin, and the fixing end with Blower Housing for connecting, institute
Connecting pin is stated relative to the fixing end close to the shroud, the connecting pin is provided with first seal, first sealing
Part is circumferentially distributed around the current collector, and the first seal extends along the shroud that is axially facing of the current collector,
The first seal forms buffering area with the current collector, and being stretched into close to one end of the current collector for the shroud is described slow
It rushes in area, there is the first gap, first seal to flow through described for slowing down between the first seal and the shroud
The air-flow in one gap.
In optional embodiment of the present invention, the end set close to the shroud of the first seal has inclined-plane,
The inclined-plane is located at the inner wall of the first seal.
In optional embodiment of the present invention, one end close to the connecting pin of the shroud is provided with the second sealing
Part, the second seal are located in the buffering area, and the second seal is circumferentially distributed around the shroud, and described the
Two sealing elements extend along the first seal that is radially orientated of the shroud, the second seal and the first seal
Between have the second gap.
In optional embodiment of the present invention, one end far from the shroud of the second seal is provided with inclined-plane,
The inclined-plane is located at the side close to the connecting pin of the second seal.
In optional embodiment of the present invention, the connecting pin is provided with third sealing element, and the third sealing element is located at
In the buffering area, the third sealing ring is around the circumferentially distributed of the current collector, and the third sealing element is along the afflux
The shroud that is axially facing of device extends, and has third space between the third sealing element and the first seal.
In optional embodiment of the present invention, the third sealing element includes that at least one circle is coaxially disposed with the current collector
Sealing tooth, the axis direction of the current collector is preset direction, and length of the sealing tooth on the preset direction is less than
Length of the first seal on the preset direction.
In optional embodiment of the present invention, the quantity of the sealing tooth is two circles, and the two circles sealing tooth is along the collection
Flow the spaced radial setting of device.
In optional embodiment of the present invention, one end far from the connecting pin of the sealing tooth is provided with inclined-plane, institute
State the side far from the first seal that inclined-plane is located at the sealing tooth.
In optional embodiment of the present invention, the thickness of the sealing tooth is less than the thickness of the first seal.
The embodiments of the present invention also provide a kind of wind turbine, including inlet box and above-mentioned inlet seal structure, the air inlets
Case is connect with the current collector.
Compared with prior art, beneficial effects of the present invention are：
The inlet seal structure, principle is sealed using tooth, and turbulent flow is generated when air-flow being made to flow through sealing structure to consume leakage gas
The energy of stream, to reduce internal leakage so that influence of the leakage air-flow to impeller channel flow field reduces.
Using the wind turbine of above-mentioned inlet seal structure, inlet seal effect is improved, ensure that the operational efficiency of wind turbine.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the sealed structural representation of the prior art；
Fig. 2 is a kind of visual angle schematic diagram of the inlet seal structure of first embodiment of the invention；
Fig. 3 is another visual angle schematic diagram of the inlet seal structure of first embodiment of the invention；
Fig. 4 is enlarged diagram at the A of Fig. 3；
Fig. 5 is the structural schematic diagram on inclined-plane；
Fig. 6 is the flow direction schematic diagram for revealing air-flow；
Fig. 7 is the structural schematic diagram of single-stage tooth envelope；
Fig. 8 is a kind of structural schematic diagram of secondary gear envelope；
Fig. 9 is another structural schematic diagram of secondary gear envelope.
Icon：100- inlet seal structures；1- air inlets；2- shrouds；21- blades；22- hub disks；3- spiral casing flow passages region；
4- impeller upstream canals region；5- impeller channels region；6- current collectors；61- fixing ends；The connecting pins 62-；7- first seals；
The first gaps 71-；8- second seals；The second gaps 81-；9- third sealing elements；91- seals tooth；92- third spaces；93-
Four gaps；101- buffering areas；The inclined-planes 102-.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, only
It is that for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have specifically
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be
Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
First embodiment
It please refers to shown in Fig. 2, the present embodiment provides a kind of inlet seal structures 100, are applied to centrifugal blower, including shroud
2 and current collector 6.
In centrifugal blower, impeller with electric machine shaft driving for connecting, and impeller is rotational structure, and impeller includes multiple blades 21
And it is fixed on the shroud 2 and hub disk 22 of 21 both sides of blade, shroud 2 is rotatably connect with current collector 6；Current collector 6 is revolution
Body structure, current collector 6 air inlet 1 of the prior art (be similar to) include fixing end 61 and connecting pin 62, fixing end 61 be used for
Inlet box connects (when centrifuge does not have inlet box, fixing end 61 is connect with Blower Housing), and connecting pin 62 is relative to fixing end
61 close to shroud 2, and connecting pin 62 is provided with first seal 7 and third sealing element 9, between first seal 7 and connecting pin 62
Buffering area 101 is formed, the end of shroud 2 is stretched into buffering area 101, has the first gap between first seal 7 and shroud 2
71, first seal 7 forms first order tooth envelope with shroud 2, and one end of the close connecting pin 62 of shroud 2 is provided with second seal
8, second seal 8 is located at along the axially extending of impeller, second seal 8 in buffering area 101, and second seal 8 and
There is the second gap 81, second seal 8 to form second level tooth envelope, third sealing element with first seal 7 between one sealing element 7
9 in buffering area 101 and third sealing element 9 is between connecting pin 62 and second seal 8, third sealing element 9 and first
There is third space 92 between sealing element 7, and there is the 4th gap 93, third between third sealing element 9 and second seal 8
Sealing element 9 forms third level tooth envelope with second seal 8.The inlet seal structure 100 seals principle using tooth, makes air-flow at one
It is rotated between a sealing element, generates turbulent flow to consume the energy of leakage air-flow step by step, so that the kinetic energy of leakage air-flow is reduced, speed subtracts
It is small, to reduce internal leakage, meanwhile, the reduction of internal leakage so that influence of the leakage air-flow to impeller channel flow field also subtracts
It is small.User can choose different types of sealing element according to actual conditions, realize different grades of tooth envelope, meet and use need
It asks.
The concrete structure to all parts of the inlet seal structure 100 and mutual position relationship carry out detailed below
It describes in detail bright.
According to the structure of centrifugal blower, impeller is rotary part, for convenience, as shown in figure 3, impeller is used for and electricity
Arbor is sequentially connected, and impeller includes multiple blades 21 and be fixed on the shroud 2 and hub disk 22 of 21 both sides of blade, blade 21, preceding
Disk 2 and hub disk 22 form impeller channel region 5.Shroud 2 is rotatably connect, afflux with current collector 6 (commonly referred to as air inlet)
Device 6 is rotary structure, and current collector 6 is coaxially disposed with shroud 2, and current collector 6 is connect with inlet box, and current collector 6 is in centrifugal blower
It is stationary state when operation.
It should be pointed out that since shroud 2 is rotational structure, shroud 2 has circumferentially, axially and radially, respectively refers to shroud 2
The direction of rotation, the axis direction of 2 rotary shaft of shroud, perpendicular to 2 rotary shaft of shroud axis direction.Following current collector 6
Circumferential, circumferential direction and radial similar with shroud 2.
As shown in figure 3, current collector 6 includes fixing end 61 and connecting pin 62, fixing end 61 is for connecting (this reality with inlet box
It applies in example, there is centrifugal blower inlet box, fixing end 61 to be connect with inlet box；When centrifugal blower does not have inlet box, fixing end
61 connect with Blower Housing) so that the gas in inlet box enters in current collector 6；Connecting pin 62 is close relative to fixing end 61
The end of shroud 2, connecting pin 62 has certain thickness, and as shown in figs. 4 and 7, connecting pin 62 is provided with first seal 7,
First seal 7 is circumferentially distributed around current collector 6, and first seal 7 extends along the shroud 2 that is axially facing of current collector 6, and first
Sealing element 7 is flushed with the outer surface of connecting pin 62, and the thickness of first seal 7 is less than the thickness of connecting pin 62, first seal 7
Buffering area 101 is formed with current collector 6 (connecting pin 62), one end of the close current collector 6 of shroud 2 is stretched into buffering area 101, shroud
There is gap between 2 and connecting pin 62, there is the first gap 71, first seal 7 to be used between first seal 7 and shroud 2
Slow down the air-flow for flowing through the first gap 71.
It should be pointed out that the thickness that the present embodiment is mentioned refers to radially (perpendicular to the direction of the axis of rotary shaft)
Size.
First seal 7 is cylindrical structure, and first seal 7 is connect with connecting pin 62 so that first seal 7 and shroud
2 form first order tooth envelope, are located at the air-flow in spiral casing flow passage region 3 after the first gap 71 enters buffering area 101, generate rapid
Stream, with the energy of consumption leakage air-flow, to reduce internal leakage (as shown in Figure 6).In order to improve first seal 7 and connect
The bonding strength at end 62, first seal 7 are integrally formed with connecting pin 62.As shown in fig. 7, for first seal 7 into
The schematic diagram of air-tight structure 100.
Further, in order to improve the effect of throttle effect, as shown in figure 5, the end of the close shroud 2 of first seal 7
Portion is provided with inclined-plane 102, and inclined-plane 102 is located at the inner wall of first seal 7, that is, inclined-plane 102 is located at the interior of first seal 7
Surface, and extended along the connecting pin 62 that is axially facing of current collector 6 by the end of the close shroud 2 of first seal 7.Quite
In the thickness that first seal is 7 is gradually increased by one end of close shroud 2 towards connecting pin 62 along the axial direction of current collector 6.
In order to reduce influence of the leakage air-flow to impeller channel flow field, as shown in Figure 4 and Figure 8, in the close connection of shroud 2
The one end at end 62 is provided with second seal 8, and second seal 8 is located in buffering area 101, and second seal 8 is around shroud 2
Circumferentially distributed, second seal 8 extends along the first seal 7 that is radially orientated of shroud 2, second seal 8 and first seal 7
Between there is the second gap 81, leakage air-flow flows through the second gap 81 and enters impeller channel flow field behind the first gap 71.Second
Angle space is formed between sealing element 8 and shroud 2, plays the role of stopping air-flow so that the air-flow for flowing through the first gap 71 must
The second gap 81 must be flowed through, reduces the flow of air-flow, simultaneously so that air-flow is generating turbulent flow behind the second gap 81.The
Two sealing elements 8 form second level tooth envelope with first seal 7, as shown in figure 8, tooth envelope in the second level makes with the envelope cooperation of first order tooth
With, leakage air-flow is honored as a queen by first order tooth envelope and second level tooth, forms turbulent flow twice, step by step the energy of consumption leakage air-flow,
So that the kinetic energy of leakage air-flow reduces, speed reduces, and reduces amount of leakage.
In order to improve the bonding strength of second seal 8 and shroud 2, second seal 8 is integrally formed with shroud 2.
It should be pointed out that in order to ensure the energy expenditure of leakage air-flow, the thickness of second seal 8 is smaller as possible, the
The thickness of two sealing elements 8 can be less than the thickness of first seal 7.Because the flow velocity for the air-flow that first seal 7 is born compared with
Greatly, so, the thickness of first seal 7 can choose the thickness more than second seal 8.
Further, in order to improve the effect of throttle effect, as shown in figure 5, the one of the separate shroud 2 of second seal 8
End is provided with inclined-plane 102, and inclined-plane 102 is located at the side (side far from blade 21) of the close connecting pin 62 of second seal 8,
Inclined-plane 102 is extended by the end of the separate shroud 2 of second seal 8 towards shroud 2, and it is close to reduce second for the setting on inclined-plane 102
The thickness of sealing 8 improves the effect of the throttle effect of second seal 8.It is equivalent to, the thickness of second seal 8 is along shroud 2
Radial direction, by gradually increasing towards shroud 2 close to one end of first seal 7.
As shown in figures 4 and 9, connecting pin 62 is provided with third sealing element 9, and third sealing element 9 is located in buffering area 101,
Third sealing element 9 is circumferentially distributed around current collector 6, and third sealing element 9 extends along the shroud 2 that is axially facing of current collector 6, third
There is third space 92 between sealing element 9 and first seal 7.
Third sealing element 9 includes the sealing tooth 91 that at least one circle is coaxially disposed with current collector 6, the axis direction of current collector 6
For preset direction, length of the sealing tooth 91 on preset direction is less than length of the first seal 7 on preset direction.When this into
When air-tight structure 100 is provided with second seal 8, in the axial direction of current collector 6, sealing tooth 91 (third sealing element 9) and the
There is the 4th gap 93, leakage air-flow is after second seal 8, into third space 92, between the 4th between two sealing elements 8
Gap 93 enters impeller channel region 5.The setting of third sealing element 9 so that leakage air-flow forms rapids after third sealing element 9
Stream, with the energy of consumption leakage air-flow, to reduce internal leakage.
As the optional mode of the present embodiment, the quantity of sealing tooth 91 is two circles, diameter of the two circle sealing teeth 91 along current collector 6
It is arranged to interval.For two circle sealing teeth 91 so that air-flow generates turbulent flow twice when flowing through third sealing element 9, gas is revealed in consumption twice
The energy of stream reduces internal leakage.
Further, as shown in figure 5, one end of the separate connecting pin 62 of sealing tooth 91 is provided with inclined-plane 102, inclined-plane 102
It positioned at the side of the separate first seal 7 of sealing tooth 91, is equivalent to, seals the thickness of tooth 91 along the axial by leaning on of current collector 6
Nearby one end of disk 2 gradually increases towards connecting pin 62.The setting for sealing the inclined-plane 102 of tooth 91 improves the section of sealing tooth 91
The effect for flowing effect, reduces internal leakage.
In order to improve the bonding strength of sealing tooth 91 and connecting pin 62, sealing tooth 91 is integrally formed with connecting pin 62.
Further, the thickness of sealing tooth 91 is less than the thickness of first seal 7, and sealing tooth 91 is located in buffering area 101,
When the thickness for sealing tooth 91 is smaller, the effect of the throttle effect of third sealing element 9 can be improved, convenient for reducing internal leakage,
So that the leakage air-flow into impeller channel region 5 reduces, to reduce influence of the leakage air-flow to impeller channel flow field.Fig. 9
It show, the structural schematic diagram that first seal 7 coordinates with third sealing element 9, in this case, second seal 8 is not designed,
It is sealed using two-stage tooth.
The operation principle of the embodiment of the present invention is：
As shown in fig. 6, along interior leakage direction, first seal 7 and shroud 2 form first order tooth envelope, second seal 8 with
First seal 7 forms second level tooth envelope, and third sealing element 9 forms third level tooth envelope with second seal 8, is sealed using tooth former
Reason, makes air-flow be rotated between sealing element one by one, generates turbulent flow to consume the energy of leakage air-flow step by step, makes leakage air-flow
Kinetic energy reduces, and speed reduces, to reduce internal leakage；Meanwhile the reduction of internal leakage so that leakage air-flow is to impeller channel stream
The influence of field also reduces.
It should be pointed out that user can be according to actual use situation, using single tooth seal structure, you can to use
Single-stage tooth envelope (only there are one sealing elements, as shown in Figure 7), multistage tooth can also be used to seal, and (two or three sealing elements are such as schemed
8/9 show secondary seal, and Fig. 4 seals for three-level), to realize different inlet seals, meet different use demands.
Second embodiment
A kind of wind turbine is present embodiments provided, including the inlet seal structure 100 that inlet box and first embodiment provide.
In the present embodiment, inlet box is connect with current collector 6, and gas can enter impeller stream through inlet box and current collector 6
Road region 5.Using the wind turbine of inlet seal structure 100, interior amount of leakage is reduced, reduces the influence to impeller channel flow field,
The working efficiency for improving wind turbine reduces the consumption of energy.
It should be noted that in the absence of conflict, the feature in embodiment in the present invention can be combined with each other.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of inlet seal structure is applied to centrifugal blower, which is characterized in that including shroud and current collector；
The shroud is rotatably connect with the current collector, the current collector be rotary structure, the current collector with it is described
Shroud is coaxially disposed, and the current collector includes fixing end and connecting pin, and the fixing end with Blower Housing for connecting, the company
End is connect relative to the fixing end close to the shroud, the connecting pin is provided with first seal, the first seal ring
Around the circumferentially distributed of the current collector, the first seal extends along the shroud that is axially facing of the current collector, described
First seal forms buffering area with the current collector, and the shroud stretches into the buffering area close to one end of the current collector
It is interior, there is the first gap, first seal to be flowed through between described first for slowing down between the first seal and the shroud
The air-flow of gap.
2. inlet seal structure according to claim 1, which is characterized in that the close shroud of the first seal
End set there is inclined-plane, the inclined-plane to be located at the inner wall of the first seal.
3. inlet seal structure according to claim 1, which is characterized in that the one of the close connecting pin of the shroud
End is provided with second seal, and the second seal is located in the buffering area, and the second seal is around the shroud
It is circumferentially distributed, the second seal extends along the first seal of being radially orientated of the shroud, second sealing
There is the second gap between part and the first seal.
4. inlet seal structure according to claim 3, which is characterized in that the separate shroud of the second seal
One end be provided with inclined-plane, the inclined-plane is located at the side close to the connecting pin of the second seal.
5. inlet seal structure according to claim 1 or 3, which is characterized in that the connecting pin is provided with third sealing
Part, the third sealing element are located in the buffering area, and the third sealing ring is described around the circumferentially distributed of the current collector
Third sealing element extends along the shroud of being axially facing of the current collector, the third sealing element and the first seal it
Between have third space.
6. inlet seal structure according to claim 5, which is characterized in that the third sealing element include at least one circle with
The sealing tooth of the current collector coaxial arrangement, the axis direction of the current collector is preset direction, and the sealing tooth is described pre-
Length on set direction is less than length of the first seal on the preset direction.
7. inlet seal structure according to claim 6, which is characterized in that the quantity of the sealing tooth is two circles, described
Two circle sealing teeth are arranged along the spaced radial of the current collector.
8. inlet seal structure according to claim 6, which is characterized in that the separate connecting pin of the sealing tooth
One end is provided with inclined-plane, and the inclined-plane is located at the side far from the first seal of the sealing tooth.
9. inlet seal structure according to claim 6, which is characterized in that the thickness of the sealing tooth is less than described first
The thickness of sealing element.
10. a kind of wind turbine, which is characterized in that including inlet seal structure, institute described in inlet box and claim 1-9 any one
Inlet box is stated to connect with the current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810383673.8A CN108278221B (en) | 2018-04-26 | 2018-04-26 | Air inlet sealing structure and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810383673.8A CN108278221B (en) | 2018-04-26 | 2018-04-26 | Air inlet sealing structure and fan |
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| Publication Number | Publication Date |
|---|---|
| CN108278221A true CN108278221A (en) | 2018-07-13 |
| CN108278221B CN108278221B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810383673.8A Active CN108278221B (en) | 2018-04-26 | 2018-04-26 | Air inlet sealing structure and fan |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805573A (en) * | 2019-12-12 | 2020-02-18 | 四川德胜集团钒钛有限公司 | Impeller assembly of centrifugal fan |
| CN115853829A (en) * | 2022-12-27 | 2023-03-28 | 西安交通大学 | Fan collector and centrifugal fan |
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| CN115853829A (en) * | 2022-12-27 | 2023-03-28 | 西安交通大学 | Fan collector and centrifugal fan |
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| CN108278221B (en) | 2024-02-06 |
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