CN204962815U - Sealing device among flue gas pipeline on baffle door - Google Patents

Abstract

The utility model discloses a sealing device among flue gas pipeline on baffle door, sealing device makes it not only be applicable to rectangle baffle door but also be applicable to circular baffle door including hard sealing device and soft sealing device, particularly, hard sealing device includes gasket and dustproof sheet, the gasket is including the right angle area that is used for the sealed arc -shaped elastic pieces of elasticity and is used for fixed arc -shaped elastic pieces, soft sealing device includes sealing strip and the U type gasket of parcel in the sealing strip outside, wherein, the sealing strip is installed between the arc avris limit of arc limit frame and blade. Coordination through hard sealing device of the aforesaid and soft sealing device is used, greatly improves the sealed effect of baffle door for the sealing performance of gas baffle door satisfies the user demand.

Description

Sealing device in flue on baffle door

Technical field

The utility model relates to a kind of smoke impervious system, is specifically related to the sealing device of gas baffle door on a kind of flue.

Background technology

Along with country's improving constantly environmental requirement, can produce in the industry of a large amount of flue gas at heating power heating etc., higher requirement be there has also been to fume emission index.Therefore, from boiler combustion to fume emission, to the links of air, corresponding raising professional technique is all being needed.Usually, in the flue of steam generator system, be equiped with gas baffle door, turn off, open, shunt and regulate the flue gas of flue, wherein, if containing more harmful components in flue gas, the sealing property for sealing system requires can be more strict.

Gas baffle door adopts louver type damper door usually, and baffle door can be divided into the two baffle plate of single shaft list baffle plate, single shaft, twin shaft list baffle plate, the two baffle plate of twin shaft according to its blade shape.Single shaft list baffle plate only has single layer blade, and sealing is not high.The two baffle plate of single shaft adopts twi-tier blade parallel construction, and middle access is dry, clean hot-air can block flue gas and pass through, but will keep normal power-up during blowing the device busy of hot-air always, causes human and material resources and energy waste.Chinese invention patent prospectus CN101216178A discloses a kind of sealing device of gas baffle door, described baffle door is monolithic single-shaft configuration, door-hinge is positioned at the top of baffle door, horizontally disposed, sealing surface comprises the elastic sheet metal that is arranged on baffle door both sides surrounding and is arranged on the metallic plate with the flue surrounding of baffle door mating surface, it adopts elastic sheet metal and metallic plate to be formed and overlaps fitted seal, forms sealed cavity in the middle of sealing surface.

The application of above hermetically-sealed construction improves the sealing of single shaft list baffle-type baffle door, but, there is following shortcoming simultaneously:

(1) in order to form sealing surface, the both sides surrounding of baffle door has installed elastic sheet metal, and flue surrounding has installed the sheet metal with elastic metallic oblique cut grafting, such complicated operation and also be a kind of material use waste;

(2) in order to ensure the sealing of sealing device, need to pass into flowing gas in formed sealed cavity, make energy resource consumption comparatively large, sealing cost is higher;

(3) when elastic sheet metal is wrapped in shaft end side, due to the existence of vane tip turning cylinder, can make coatedly there is leak, will cause smoke spillage like this, sealing effectiveness is not ideal enough.

Utility model content

In order to overcome the problems referred to above, present inventor has performed and study with keen determination, design the sealing device on baffle door in a kind of flue, sealing device greatly can improve the sealing effectiveness of baffle door, the sealing property of gas baffle door is made to meet user demand, described sealing device comprises hard sealing device and soft sealer, it is made not only to be applicable to rectangle baffle door but also be applicable to circular baffle plate door, described hard sealing device comprises diaphragm seal and dustproof sheet, described diaphragm seal comprises the arc spring lamination for elastic packing and the right angle band for fixing arc spring lamination, described arc spring lamination is between straight flange frame and the straight flange side of blade or between the straight flange side of two adjacent blades, described dustproof sheet is positioned at diaphragm seal upper end, described soft sealer comprises sealing strip and is wrapped in the filling pad outside sealing strip, wherein, described sealing strip is arranged between the arc avris limit of arc limit frame and blade, thus the effect of abundant sealing fume can be played, thus complete the utility model.

Specifically, the purpose of this utility model is to provide following aspect:

(1) sealing device in a kind of flue on baffle door, it is characterized in that, described sealing device comprises hard sealing device and soft sealer, described hard sealing device comprises diaphragm seal 61, described diaphragm seal 61 cross section is spoon shape or C shape, and described diaphragm seal 61 comprises the arc spring lamination 611 for elastic packing and the right angle band 612 for fixing arc spring lamination.

(2) sealing device according to above-mentioned (1), is characterized in that,

The blade 2 that baffle door comprises frame 5 and can rotate relative to frame, described baffle door is rectangle baffle door or circular baffle plate door, and described hard sealing device is arranged on rectangle baffle door or on circular baffle plate door, and described soft sealer is arranged on circular baffle plate door.

(3) sealing device according to above-mentioned (2), is characterized in that,

The side of described rectangle baffle door blade 2 is straight flange side 21, the frame 5 of described rectangle baffle door is straight flange frame 51, wherein, when rectangle baffle door is closed, the straight flange frame 51 of described rectangle baffle door is centered around the outside of the straight flange side 21 of described rectangle damper vanes 2, and/or

The side of described circular baffle plate door blade 2 comprises straight flange side 21 and arc avris limit 22, the frame 5 of described circular baffle plate door comprises straight flange frame 51 and arc limit frame 52, wherein, when circular baffle plate door is closed, the blade 2 of described circular baffle plate door is attached to the side of described circular baffle plate doorjamb 5.

(4) sealing device according to above-mentioned (3), it is characterized in that, on the straight flange side 21 that described hard sealing device is arranged on rectangle damper vanes 2 or straight flange frame 51, or, on the straight flange side 21 that described hard sealing device is arranged on circular baffle plate gate flap sheet 2 or straight flange frame 51;

On the arc avris limit 22 that described soft sealer is arranged on circular baffle plate gate flap sheet or arc limit frame 52.

(5) sealing device according to above-mentioned (1), is characterized in that, described diaphragm seal 61 is for having flexible diaphragm seal.

(6) sealing device according to any one of above-mentioned (1)-(5), it is characterized in that, one end of described arc spring lamination 611 is fixed on right angle band 612, and the other end of described arc spring lamination 611 and the right angle of right angle band 612 have pre-fixed gap.

(7) sealing device according to above-mentioned (6), is characterized in that, described arc spring lamination 611 is between frame 5 and blade 2 adjacent with it or between adjacent two blades 2.

(8) sealing device according to above-mentioned (6), it is characterized in that, described hard sealing device also comprises dustproof sheet 62, and one end of described dustproof sheet 62 is attached on the long limit of described right angle band 612, and the other end of described dustproof sheet 62 is positioned at the top of described pre-fixed gap.

(9) sealing device according to above-mentioned (6), is characterized in that, described hard sealing device also includes pad 63, and described pad 63 is coated on the outside of blade 2 and frame 5.

(10) sealing device according to above-mentioned (1), it is characterized in that, described soft sealer comprises sealing strip 71 and filling pad 72, wherein, described filling pad 72 is wrapped in the outside of sealing strip 71, described sealing strip 71 is arranged between the arc avris limit 22 of arc limit frame 52 and blade 2, and described filling pad 72 is fixed on arc limit frame 52 or arc avris limit 22, and described filling pad 72 is between frame 5 and blade 2.

The beneficial effect that the utility model has comprises:

(1) sealing device in the flue provided according to the utility model on baffle door, by being arranged on the baffle door of single shaft list baffle arrangement by sealing device, improves the sealing of single shaft list baffle door;

(2) sealing device in the flue provided according to the utility model on baffle door, sealing device comprises hard sealing device and soft sealer, and result makes sealing device both can be applied on rectangle baffle door also can be applied on circular baffle plate door;

(3) sealing device in the flue provided according to the utility model on baffle door, sealing device is only arranged on blade or frame, saves material, installs simple;

(4) sealing device in the flue provided according to the utility model on baffle door, hard sealing device is wherein provided with arc spring lamination, makes to reach by the mode of elastic packing the sealing effectiveness compacted when baffle door is closed;

(5) sealing device in the flue provided according to the utility model on baffle door, hard sealing device is provided with dustproof sheet, prevents dust or other impurity from falling into hard sealing device inner, extends its service life.

Accompanying drawing explanation

Fig. 1 illustrates the structural representation of rectangle baffle door of the present utility model;

Fig. 2 illustrates the structural representation of circular baffle plate door of the present utility model;

Fig. 3 illustrates the structural representation of rectangle damper vanes of the present utility model;

Fig. 4 illustrates the structural representation of rectangle baffle door frame of the present utility model;

Fig. 5 illustrates the structural representation of circular baffle plate gate flap sheet of the present utility model;

Fig. 6 illustrates the structural representation of circular baffle plate doorjamb of the present utility model;

Fig. 7 illustrates the structural representation of diaphragm seal of the present utility model;

Fig. 8 illustrates diaphragm seal of the present utility model and dustproof sheet overall structure schematic diagram;

Fig. 9 illustrates hard schematic diagram of sealing device one of the present utility model;

Figure 10 illustrates hard schematic diagram of sealing device two of the present utility model;

Figure 11 illustrates hard schematic diagram of sealing device three of the present utility model;

Figure 12 illustrates soft sealer structural representation of the present utility model;

Drawing reference numeral illustrates:

1-turning cylinder

2-blade

21-straight flange side

22-arc avris limit

3-adpting flange

4-actuator

5-frame

51-straight flange frame

52-arc limit frame

61-diaphragm seal

611-arc spring lamination

612-right angle band

The dust-proof steel disc of 62-

63-grooved pad

64-fixes drift bolt

71-sealing strip

72-U type pad

73-drift bolt

74-setting-up piece

Detailed description of the invention

Below by drawings and Examples, the utility model is further described.Illustrated by these, feature of the present utility model and advantage will become more explicit.

Word " exemplary " special here means " as example, embodiment or illustrative ".Here need not be interpreted as being better than or being better than other embodiment as any embodiment illustrated by " exemplary ".Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, accompanying drawing need not be drawn in proportion.

According to the sealing device on baffle door in the flue that the utility model provides, wherein, described baffle door can be former gas baffle door, neat stress baffle door or bypass gas baffle door.For the gas baffle door in desulphurization system, wherein, the gas baffle door being arranged in desulphurization system import is former gas baffle door, is opened by this baffle door when desulphurization system possesses and puts into operation condition, allows the former flue gas without desulfurization to enter desulphurization system; The gas baffle door being arranged in desulphurization system outlet is neat stress baffle door, is opened by this baffle door when desulphurization system is run, and the neat stress after desulfurization discharges desulphurization system by this baffle door and corresponding clean flue; The gas baffle door be arranged on desulphurization system bypass flue is bypass gas baffle door, and when desulphurization system fault or when stopping transport, open this baffle door, former flue gas directly enters smoke stack emission through bypass flue.Therefore, the sealing of baffle door when turning off is the key factor that can safety index and environmental protection index up to standard.And the utility model sealing device structure is simple, saving material, and higher sealing can be realized.

Specifically, according to the sealing device on baffle door in the flue that the utility model provides, wherein, baffle door is mainly divided into rectangle baffle door and circular baffle plate door, as as shown in Fig. 1,2, rectangle baffle door and circular baffle plate door include blade 2, be arranged on above blade and/or the turning cylinder 1 of below actuator 4, frame 5, adpting flange 3 and penetrating blade.Wherein, described actuator controls blade 2 for 4 by turning cylinder 1 and rotates in frame 5 around turning cylinder 1, is fixed on the equipment such as air channel by baffle door by adpting flange 3.Described actuator 4 is dynamical system, and control blade 2 by described actuator and rotate around turning cylinder 1, its anglec of rotation is 0 ~ 90 °, can control the open and close of baffle door in real time, and then controls the unimpeded or closed of flue.

In one preferred embodiment, as shown in Figure 3,4, the side of described rectangle baffle door blade 2 is straight flange side 21, described straight flange side 21 comprises the four edges connected in turn mutually, wherein, two sides at turning cylinder place are all separated by turning cylinder, form discontinuous side, and two other side is continuous side.Described rectangle baffle door upper side frame 5 is straight flange frame 51, size and the described straight flange side 21 of described straight flange frame 51 match, wherein, the straight flange frame 21 of described rectangle baffle door is centered around the outside of the straight flange side 21 of described rectangle damper vanes 2, namely described blade is just in time embedded in described frame 5, therebetween gap should be little as much as possible, overflows from above-mentioned gap to prevent flue gas.

In one preferred embodiment, as Fig. 5, shown in 6, the side of described circular baffle plate door blade 2 comprises straight flange side 21 and arc avris limit 22, described blade 2 comprises 3 straight flange sides 21 and an arc avris limit 22, wherein, article four, side connects each other in turn, the frame 5 of described circular baffle plate door comprises straight flange frame 51 and arc limit frame 52, the size of described frame 5 and the surrounding side of described blade 2 match, wherein, the blade 2 of described circular baffle plate door is attached to the side of described circular baffle plate doorjamb 5, namely the gross area of described circular baffle plate door blade is greater than the area that described circular baffle plate doorjamb inwall surrounds, thus in the region that surrounds of the frame inwall making described circular baffle plate door blade cannot be embedded into circular baffle plate door, and in order to make baffle door and on blade can folding, control the unimpeded and partition of flue, the preferred side arc avris limit of described circular baffle plate gate flap sheet 2 being attached to described circular baffle plate doorjamb 5 in the utility model, when ensureing that baffle door is closed, blade 2 is pressed on frame 5.

In one preferred embodiment, described sealing device includes hard sealing device and soft sealer.Wherein, on the described hard sealing device straight flange side 21 that is arranged on rectangle baffle door or circular baffle plate gate flap sheet 2 or straight flange frame 51; On the arc avris limit 22 that described soft sealer is arranged on circular baffle plate gate flap sheet or arc limit frame 52.Described hard sealing device comprises the diaphragm seal 61 with a fixed structure, preferred diaphragm seal 61 has elasticity, elasticity described in the utility model is a kind of characteristic of object itself, specifically, be subject to external force and after there is elastic deformation when object, a kind of character of original state can be recovered when external force disappears, in addition, diaphragm seal in the utility model can be made up of the material that the rigidity such as steel disc are relatively strong, need to be subject to larger power and just deformation can occur, certainly, closing baffle plate door the power compressing baffle door enough make it deformation occurs; More preferably, described diaphragm seal 61 one end is sheet, and the other end is bent downwardly formation right angle and is bent upwards formation arc-shaped flaky again, and its cross section is spoon shape or C shape.As shown in Figure 7, described diaphragm seal 61 comprises for the arc spring lamination 611 of elastic packing and the right angle band 612 for fixing described arc spring lamination, one end of described arc spring lamination 611 is fixed on right angle band 612, and the other end of described arc spring lamination 611 and the right angle of right angle band 612 have pre-fixed gap.As shown in Figure 8, described hard sealing device also comprises dustproof sheet 62, preferably, one end of described dustproof sheet 62 and the long limit of described right angle band 612 are affixed, the other end of described dustproof sheet 62 is positioned at the top of described pre-fixed gap, to block the changeable gap that arc spring lamination 611 is formed, to prevent the dust in equipment or other impurity from dropping in above-mentioned gap, thus improve the service life of arc spring lamination 611 and ensure its sealing property.

In further preferred embodiment, be illustrated in figure 9 hard schematic diagram of sealing device one, be arranged between two adjacent blades 2 by described hard sealing device, described hard sealing device is fixedly mounted on one of them blade.Grooved pad 63 is fixed on two blade 2 edges, and general blade 2 material is that carbon steel is perishable, and grooved pad 63 is made up of resistant material, therefore is coated on the outside of the components such as blade, can protect coated blade therein, prevents blade to be corroded.Described diaphragm seal 61 is fixedly connected with dustproof sheet 62, in the utility model preferably, diaphragm seal 61 and dustproof sheet 62 drift bolt 64 that is fixed in the lump is fixed therein on a blade 2, wherein, right angle band 612 is positioned on above-mentioned blade 2, arc spring lamination 611 is between two blades, when baffle door actuator 4 performs shutoff operation, gap shrinks between two blades 2, the arc spring lamination 611 of diaphragm seal 61 is compressed, close to right angle band 612, the gap between two blades 2 is closely filled by diaphragm seal, thus reaches the effect of elastic packing.This embodiment can be applicable to the sealing between rectangle baffle door two blades 2 adjacent with circular baffle plate door, to be arranged between adjacent two blades 2 of rectangle baffle door on one of them blade by described hard sealing device or described hard sealing device to be arranged between two blades of circular baffle plate door on one of them blade, and making arc spring lamination 61 between adjacent two blades.

In further preferred embodiment, be hard schematic diagram of sealing device two as shown in Figure 10, be arranged between blade 2 and frame 5 adjacent with it by described hard sealing device, described hard sealing device is fixedly mounted on blade 2.Grooved pad 63 is fixed on the edge of blade 2 and frame 5; the material of general blade 2 and frame 5 is that carbon steel is perishable; grooved pad 63 is made up of resistant material; therefore be coated on the outside of blade 2 and component such as frame 5 grade; the components such as coated blade and frame can be protected therein, prevent component to be corroded.Described diaphragm seal 61 is fixedly connected with dustproof sheet 62, in the utility model preferably, diaphragm seal 61 and dustproof sheet 62 drift bolt 64 that is fixed in the lump is fixed on blade 2, wherein, right angle band 612 is positioned on above-mentioned blade 2, arc spring lamination 611 is between blade 2 and frame 5, when baffle door actuator 4 performs shutoff operation, gap shrinks between blade 2 and frame 5, the arc spring lamination 611 of diaphragm seal 61 is compressed, close to right angle band 612, the gap between blade 2 and frame 5 is closely filled by diaphragm seal 61, thus reaches the effect of elastic packing.This embodiment can be applicable to blade 2 side between the straight flange side 21 of rectangle baffle door and circular baffle plate gate flap sheet 2 and straight flange frame 51, and makes arc spring lamination 61 between blade 2 and frame 5.

In further preferred embodiment, be hard schematic diagram of sealing device three as shown in figure 11, be arranged between blade 2 and frame 5 adjacent with it by described hard sealing device, hard sealing device is arranged on frame 5.Grooved pad 63 is fixed on the edge of blade 2 and frame 5; the material of general blade 2 and frame 5 is that carbon steel is perishable, and grooved pad 63 is made up of resistant material, therefore is coated on the outside of blade 2 and component such as frame 5 grade; coated component can be protected therein, prevent component to be corroded.Described diaphragm seal 61 is fixedly connected with dustproof sheet 62, in the utility model preferably, diaphragm seal 61 and dustproof sheet 62 drift bolt 64 that is fixed in the lump is fixed on frame 5, wherein, right angle band 612 is positioned on above-mentioned frame 5, arc spring lamination 611 is between blade 2 and frame 5, when baffle door actuator 4 performs shutoff operation, gap shrinks between blade 2 and frame 5, the arc spring lamination 611 of diaphragm seal 61 is compressed, close to right angle band 612, the gap between blade 2 and frame 5 is closely filled by diaphragm seal 61, thus reaches the effect of elastic packing.This embodiment can be applicable to frame 5 side between the straight flange side 21 of rectangle baffle door and circular baffle plate gate flap sheet 2 and straight flange frame 51, and makes arc spring lamination 61 between blade 2 and frame 5.

In further preferred embodiment, when by hard sealing device sealed rectangular baffle door, specifically on sealed rectangular damper vanes with gap between the side of turning cylinder 1 and frame 5 time, diaphragm seal 61 is fixed on frame 5, the object limiting said structure is to reduce gas leakage possibility, improves sealing effectiveness; The axle head side of blade 2 is cut off by axle, form discontinuous side, if diaphragm seal 61 is fixed on the side of blade 2, because side is discontinuous, not only installation procedure is loaded down with trivial details, and the possibility producing gap also increases, gas leak phenomenon may be caused, if be fixed on frame 5, be then a continuous print potted line, the problem of above-mentioned easy gas leakage can not be produced; In addition, when sealed rectangular damper vanes does not have the gap between the side of turning cylinder 1 and frame 5, if when hard sealing device is fixedly mounted on frame, the intersection of frame two sides drift angle in T-shaped, in order to be connected the sealing device on two sides, thus reach the effect of fully sealing.

In further preferred embodiment; as shown in figure 12; soft sealer comprises sealing strip 71, filling pad 72, drift bolt 73 and fixing filler strip 74; wherein filling pad 72 is fixed on the edge of blade 2 and frame 5, and the material of general blade 2 and frame 5 is carbon steel, perishable; filling pad 72 is made up of resistant material; therefore be coated on blade 2 and the outside of component such as frame 5 grade, the components such as coated blade and frame can be protected therein, prevent it to be corroded.Described sealing strip 71 is fixedly connected with fixing filler strip 74, and preferably, sealing strip 71 and fixing filler strip 74 are fixed by drift bolt 73, then are fixed on arc limit frame 52 in the lump, and preferably, sealing strip 71, fixing filler strip 74 are weldingly fixed on arc limit frame 52 with drift bolt 73.When baffle door actuator 4 performs shutoff operation, blade 2 is tightly pressed on sealing strip 71 by the effect of actuator 4 torsion, realizes the sealing between frame 5 and blade 2.This sealing device can be applicable to the sealing between the blade 2 of circular baffle plate door and arc limit frame 52.

In one preferred embodiment, described baffle door should according to the physics and chemistry physical property crossing flow medium, choose reasonable baffle plate material, resistant material manufacture all should be adopted to all parts with cold end corrosion smoke contacts, baffle door should have enough bulk strengths with ensure the distortion occurred in use procedure unlikely affect baffle door using function, performance and life-span.

Preferably, the diaphragm seal material of former gas baffle door should adopt the manufacture of 316L material, and all the other positions of baffle door can adopt carbon steel to make; The bolt of neat stress baffle door, nut, diaphragm seal should select C276 or the suitable alloy material of performance, and damper vanes and body and axial wood matter should choose 1.4529 alloys or the suitable alloy of performance makes; The bolt of by-pass damper door neat stress side, nut, diaphragm seal should select C276 or the suitable alloy material of performance, damper vanes material, high temperature side can select Q235, low temperature side should select 1.4529 alloys or the suitable alloy of performance to make, and the material of baffle door body and axle should select 1.4529 alloys or the suitable alloy of performance to make.

In description of the present utility model, it should be noted that, term " on ", D score, " interior ", the orientation of the instruction such as " outward " or position relationship be based on the orientation under utility model works state or position relationship, only the utility model and simplified characterization for convenience of description, instead of instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as the restriction to the utility model utility model.In addition, term " structure chart one ", " structure chart two ", " structure chart three " only for knowing description scheme, and can not be interpreted as instruction or hint relative importance.

More than combine and preferred embodiment the utility model is illustrated, but these embodiments are only exemplary, only play illustrative effect.On this basis, can carry out multiple replacement and improvement to the utility model, these all fall in protection domain of the present utility model.

Claims (10)

1. the sealing device in a flue on baffle door, it is characterized in that, described sealing device comprises hard sealing device and soft sealer, described hard sealing device comprises diaphragm seal (61), described diaphragm seal (61) cross section is spoon shape or C shape, and described diaphragm seal (61) comprises the arc spring lamination (611) for elastic packing and the right angle band (612) for fixing arc spring lamination.

2. sealing device according to claim 1, is characterized in that,

The blade (2) that baffle door comprises frame (5) and can rotate relative to frame, described baffle door is rectangle baffle door or circular baffle plate door, described hard sealing device is arranged on rectangle baffle door or on circular baffle plate door, and described soft sealer is arranged on circular baffle plate door.

3. sealing device according to claim 2, is characterized in that,

The side of described rectangle baffle door blade (2) is straight flange side (21), the frame (5) of described rectangle baffle door is straight flange frame (51), wherein, when rectangle baffle door is closed, the straight flange frame (51) of described rectangle baffle door is centered around the outside of the straight flange side (21) of described rectangle damper vanes (2), and/or

The side of described circular baffle plate door blade (2) comprises straight flange side (21) and arc avris limit (22), the frame (5) of described circular baffle plate door comprises straight flange frame (51) and arc limit frame (52), wherein, when circular baffle plate door is closed, the blade (2) of described circular baffle plate door is attached to the side of described circular baffle plate doorjamb (5).

4. sealing device according to claim 3, it is characterized in that, on the straight flange side (21) that described hard sealing device is arranged on rectangle damper vanes (2) or straight flange frame (51), or, on the straight flange side (21) that described hard sealing device is arranged on circular baffle plate gate flap sheet (2) or straight flange frame (51);

On the arc avris limit (22) that described soft sealer is arranged on circular baffle plate gate flap sheet or arc limit frame (52).

5. sealing device according to claim 1, is characterized in that, described diaphragm seal (61) is for having flexible diaphragm seal.

6. the sealing device according to claim 1-5 any one, it is characterized in that, one end of described arc spring lamination (611) is fixed on right angle band (612), and the other end of described arc spring lamination (611) and the right angle of right angle band (612) have pre-fixed gap.

7. sealing device according to claim 6, is characterized in that, described arc spring lamination (611) is positioned between frame (5) and blade adjacent with it (2) or is positioned between adjacent two blades (2).

8. sealing device according to claim 6, it is characterized in that, described hard sealing device also comprises dustproof sheet (62), one end of described dustproof sheet (62) is attached on the long limit at described right angle band (612), and the other end of described dustproof sheet (62) is positioned at the top of described pre-fixed gap.

9. sealing device according to claim 6, is characterized in that, described hard sealing device also includes pad (63), and described pad (63) is coated on the outside of blade (2) and frame (5).

10. sealing device according to claim 1, it is characterized in that, described soft sealer comprises sealing strip (71) and filling pad (72), wherein, described filling pad (72) is wrapped in the outside of sealing strip (71), described sealing strip (71) is arranged between the arc avris limit (22) of arc limit frame (52) and blade (2), described filling pad (72) is fixed on arc limit frame (52) or arc avris limit (22), and described filling pad (72) is positioned between frame (5) and blade (2).