CN219347497U - Sealing device for rotary heat exchanger - Google Patents

Abstract

The utility model discloses a sealing device for a rotary heat exchanger, which comprises a sector plate, a static sealing structure, a three-way sealing sheet structure, a circumferential sealing structure and a central shaft sealing structure; one side surface of the static sealing structure is abutted with the sector plate, the other side of the static sealing structure is welded with the central truss of the heat exchanger, one end of the three-way sealing sheet structure is connected with the sector plate, and the other end of the three-way sealing sheet structure is connected with the rotor on the heat exchanger; the sector plate is arranged on the side wall of the central cylinder of the heat exchanger, the central shaft sealing structure is arranged on the cylinder body of the central cylinder of the heat exchanger, and the central shaft sealing structure is positioned between the sector plate and the central cylinder of the heat exchanger.

Description

Sealing device for rotary heat exchanger

Technical Field

The utility model relates to the technical field of sealing devices, in particular to a sealing device for a rotary heat exchanger.

Background

The rotary air heat exchanger comprises a rotary air preheater, a flue gas heater and the like, and is widely applied to the industries of thermal power and steel plants. In the existing product, the heat storage element is arranged in the rotor and rotates along with the central shaft, heat conversion is realized through continuous rotation of the heat storage element, and for separating high-temperature heat exchange medium from low-temperature heat exchange medium, parts such as a sector plate, a static seal, a sealing sheet and the like are required to be arranged between the high-temperature medium and the low-temperature medium, the sealing between the sector plate and the truss can be realized through the static seal, and the sealing between the sector plate or the arc plate and the rotor can be realized through the three-way sealing sheet. In addition, the contact portion with the truss needs to be provided with a center shaft seal due to the rotation of the center shaft.

Therefore, in the whole rotary heat exchanger, the structures such as a sector plate, a static seal, a three-way sealing piece, a central shaft seal and the like are required to be reasonably configured, so that a sealing system is formed, and the safe operation of equipment is ensured.

However, the sealing structure in the prior art generally has the problems of difficult disassembly and assembly, short service life, poor sealing effect and the like.

Disclosure of Invention

Accordingly, the present utility model is directed to a sealing device for a rotary heat exchanger, which solves the above-mentioned problems of the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

according to a first aspect of the present utility model, a sealing device for a rotary heat exchanger includes a sector plate, a static seal structure, a three-way seal plate structure, a circumferential seal structure, and a center shaft seal structure; one side surface of the static sealing structure is abutted with the sector plate, the other side of the static sealing structure is welded with the central truss of the heat exchanger, one end of the three-way sealing sheet structure is connected with the sector plate, and the other end of the three-way sealing sheet structure is connected with the rotor on the heat exchanger; the sector plate is arranged on the side wall of the central cylinder of the heat exchanger, the central shaft sealing structure is arranged on the cylinder body of the central cylinder of the heat exchanger, and the central shaft sealing structure is positioned between the sector plate and the central cylinder of the heat exchanger.

Further, the sector plate comprises a front sector plate and a rear sector plate, the front sector plate and the rear sector plate are detachably connected, the central shaft sealing structure is located between the front sector plate and the central cylinder of the rotary heat exchanger, the side face of the front sector plate and the side face of the rear sector plate are in butt joint with the static sealing structure, and the three-way sealing sheet structure is arranged between the front sector plate and the rotor of the heat exchanger.

Further, the front sector plate comprises a first sub-front plate and a second sub-front plate, the first sub-front plate and the second sub-front plate are buckled and connected, and the first sub-front plate and the second sub-front plate are arranged between the rear sector plate and the central shaft sealing structure.

Further, the rear sector plate comprises a first sub-rear plate and a second sub-rear plate, the first sub-rear half is buckled with the second sub-rear plate, the first sub-rear plate is detachably connected with the first sub-front plate, and the second sub-rear plate is detachably connected with the second sub-front plate.

Further, the static seal structure includes strengthening rib, front portion closing plate, middle closing plate and rear portion closing plate, the one end of front portion closing plate is connected with the central section of thick bamboo of heat exchanger, the other end of front portion closing plate with the one end of middle closing plate is connected, the other end of middle closing plate the rear portion closing plate is connected, the front portion closing plate the middle closing plate with the side of rear portion closing plate all with the lateral wall of sector plate is connected, the middle closing plate deviates from one side of sector plate is provided with the strengthening rib.

Further, the three-way sealing plate structure comprises two first sealing plates, one ends of the two sealing plates are connected with the sector plates, and the other ends of the two first sealing plates are connected with the rotor of the heat exchanger.

Further, the three-way sealing plate structure further comprises a second sealing plate, the second sealing plate is located between the two first sealing plates, and two ends of the second sealing plate are respectively connected with the rotor of the heat exchanger through the sector plates.

Further, the three-way sealing plate structure further comprises a third sealing plate, wherein the third sealing plate is positioned between one of the two first sealing plates and the second sealing plate, and two ends of the third sealing plate are respectively connected with the fan-shaped plate and the rotor of the heat exchanger.

Further, the annular sealing structure comprises a hot end annular sealing piece, annular angle steel, a first cold end annular sealing piece and a second cold end annular sealing piece, the annular angle steel is connected with the rotor of the heat exchanger, the hot end annular sealing piece and the first cold end annular sealing piece are both connected with the annular angle steel, and the second cold end annular sealing piece is arranged on one side, deviating from the annular angle steel, of the first cold end annular sealing piece.

The utility model has the following advantages: the segmented sector plates are adopted, so that the overhaul difficulty of the sector plates can be greatly reduced, the sector plates can be more flexibly and controllably replaced, and the sector plates can be replaced during overhaul for a large-scale heat exchanger; meanwhile, the inner sector plate or the outer sector plate can be selectively replaced according to the difference of the abrasion loss of the inner side and the outer side of the sector plate, and a large amount of cost can be saved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

Fig. 1 is a first view of a perspective view of a fan plate structure of a sealing device for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 2 is a partial enlarged view of a fan plate structure of a sealing device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 3 is a second view of a perspective view of a fan plate structure of a sealing device for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 4 is a first view of a perspective view of a front fan plate structure of a sealing device for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 5 is a second view of a perspective view of a front fan plate structure of a sealing device for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 6 is a first view of a perspective view of a rear fan plate structure of a sealing device for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 7 is a second view of a perspective view of a rear fan plate structure of a sealing device for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 8 is a top view of a static seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 9 is a first cross-sectional view of a static seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 10 is an enlarged partial view of a first cross-sectional view of a static seal configuration of a seal arrangement for a rotary heat exchanger, in accordance with some embodiments of the present utility model.

Fig. 11 is a perspective view of a static seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 12 is a second cross-sectional view of a static seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 13 is an enlarged partial view of a second cross-sectional view of a static seal configuration of a seal arrangement for a rotary heat exchanger, in accordance with some embodiments of the present utility model.

Fig. 14 is a partial enlarged view of a perspective view of a static seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 15 is a schematic view of a first structure of a three-way seal structure of a sealing device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 16 is a schematic view of a second structure of a three-way seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 17 is a schematic view of a third structure of a three-way seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 18 is a schematic structural view of a circumferential sealing structure of a sealing device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 19 is a perspective view of a center spindle seal configuration of a seal arrangement for a rotary heat exchanger, according to some embodiments of the present utility model.

Fig. 20 is a partial block diagram of a center spindle seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 21 is a cross-sectional view of a central shaft seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 22 is a perspective view of a seal copper ring of a central shaft seal structure of a seal device for a rotary heat exchanger according to some embodiments of the present utility model.

Fig. 23 is a perspective view of a compression ring of a sealing arrangement for a central shaft of a sealing arrangement for a rotary heat exchanger, according to some embodiments of the present utility model.

In the figure: 1. sector plates, 2, front sector plates, 20, first front end plates, 21, first side end plates, 22, first middle rib plates, 23, first reinforcing ribs, 24, first rear end plates, 25, inner side lifting plates, 26, first fitting plates, 27, first stopper plates, 28, first sealing plates, 3, rear sector plates, 30, second front end plates, 31, second sealing plates, 32, second stopper plates, 33, second rear end plates, 34, second side end plates, 35, second reinforcing ribs, 38, outer side lifting plates, 39, second middle rib plates, 4, static sealing structures, 401, inner double expansion joints, 402, clamping plates, 403, insert plates, 404, backing plates, 406, cover plates, 409, reinforcing ribs, 411, front sealing plates, 413, rear sealing plates, 5, three-way sealing plate structures, 53, first bolts, 54, first anti-slip gaskets, 55, gasket press plate, 56, first nut, 57, first gasket, 58, second gasket, 59, third gasket, 6, circumferential seal structure, 61, hot end circumferential seal, 62, circumferential angle, 63, second bolt, 64, hot end circumferential seal press plate, 65, second anti-slip washer, 66, second nut, 67, first cold end circumferential seal, 68, second cold end circumferential seal, 69, cold end circumferential seal press plate, 7, central shaft seal structure, 701, connecting flange, 702, sealing copper ring cavity, 703, sealing copper ring, 704, cylinder, 705, packing support, 706, sealing packing, 707, pressure ring, 708, locking bolt, 709, side fixing plate, 710, second cover plate, 711, upper fixing plate, 712, first fastener, 715, locating pin, 716, second fastener.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, a sealing device for a rotary heat exchanger according to an embodiment of the first aspect of the present utility model includes a sector plate 1, a static seal structure 4, a three-way seal plate structure 5, a circumferential seal structure 6, and a center shaft seal structure 7; one side surface of the static sealing structure 4 is abutted with the sector plate 1, the other side of the static sealing structure 4 is welded with a central truss of the heat exchanger, one end of the three-way sealing sheet structure 5 is connected with the sector plate 1, and the other end of the three-way sealing sheet structure 5 is connected with a rotor on the heat exchanger; the fan-shaped plate 1 is arranged on the side wall of the central cylinder of the heat exchanger, the central shaft sealing structure 7 is arranged on the cylinder body of the central cylinder of the heat exchanger, the central shaft sealing structure 7 is arranged between the fan-shaped plate 1 and the central cylinder of the heat exchanger, the fan-shaped plate 1 comprises a front fan-shaped plate 2 and a rear fan-shaped plate 3, the front fan-shaped plate 2 and the rear fan-shaped plate 3 are detachably connected, the central shaft sealing structure 7 is arranged between the front fan-shaped plate 2 and the central cylinder of the rotary heat exchanger, the side face of the front fan-shaped plate 2 and the side face of the rear fan-shaped plate 3 are all abutted against the static sealing structure 4, the three-way sealing plate structure 5 is arranged between the front fan-shaped plate 2 and the rotor of the heat exchanger, the front fan-shaped plate 2 comprises a first sub-shaped plate and a second sub-shaped plate, the first sub-shaped plate and the second sub-shaped plate are buckled and connected, and the first sub-shaped plate and the second sub-shaped plate are arranged between the rear fan-shaped plate 3 and the central shaft sealing structure 7.

The first sub front plate and the second sub front plate comprise a first front end plate 20, a first side end plate 21, a first middle rib plate 22, a first reinforcing rib 23, a first rear end plate 24, a first matched plate 26, a first limiting block 27 and a first sealing plate 28, and the first front end plate 20, the first side end plate 21, the first middle rib plate 22 and the first reinforcing rib 23 are arranged on the first sealing plate 28; one side of the two first front end plates 20 is connected with the side wall of the central cylinder of the heat exchanger, the central shaft sealing structure is positioned between the two first front end plates 20 and the central cylinder of the heat exchanger, two ends of each first front end plate 20 are respectively connected with one first side end plate 21, a plurality of first reinforcing ribs 23 are arranged between the two side end plates at two ends of each first front end plate, at least one first middle reinforcing rib is arranged between the two adjacent first reinforcing ribs 23, the ends of the two first side end plates 21, which are away from the first front end plates 20, are respectively connected with two ends of the first rear end plate 24, one side of the first rear end plate 24, which is away from the first sealing plate 28, is provided with a first matching plate 26, the first matching plate 26 and the first sealing plate 28 are parallel to each other, a first limiting block 27 is arranged on the first rear end plate 24, the first limiting block 27 is arranged between the first matching plate 26 and the first rear end plate 24, one side of the first limiting block 27, which is away from the first rear end plate 24, is connected with the rear fan 3,

the first sub front plate further comprises an inner side lifting plate 25, the second sub front plate further comprises an outer side lifting plate 38, the inner side lifting plate 25 is arranged on a first middle reinforcing rib on the first sub front plate, the outer side lifting plate 38 is arranged on a first middle reinforcing rib on the second sub front plate, and the inner side lifting plate 25 and the outer side lifting plate 38 are connected in a matched mode; the two first mating plates 26 are abutted.

The rear sector plate 3 comprises a first sub-rear plate and a second sub-rear plate, the first sub-rear plate is buckled with the second sub-rear plate, the first sub-rear plate is detachably connected with the first sub-front plate, and the second sub-rear plate is detachably connected with the second sub-front plate.

The first sub-rear plate and the second sub-rear plate each comprise a second front end plate 30, a second side end plate 34, a second middle rib plate 39, a second reinforcing rib 35, a second rear end plate 33, a second matched plate, a second limiting block 32 and a second sealing plate 31, and the second front end plate 30, the second side end plate 34, the second middle rib plate 39 and the second reinforcing rib 35 are all arranged on the second sealing plate 31; two ends of each second front end plate 30 are respectively connected with a second side end plate 34, a plurality of second reinforcing ribs 35 are arranged between the two side end plates at two ends of each second front end plate, at least one second middle reinforcing rib is arranged between two adjacent second reinforcing ribs 35, the end parts of the two second side end plates 34, which deviate from the second front end plates 30, are respectively connected with two ends of a second rear end plate 33, one side of the second rear end plate 33, which deviate from the second sealing plate 31, is provided with a second matching plate, the second matching plate and the second sealing plate 31 are mutually perpendicular, a second limiting block 32 is arranged between the second front end plate 30 and the second sealing plate 31, one side of the second limiting block 32, which deviate from the second front end plate 30, is connected with the rear sector plate 3,

the second sub-rear plate further comprises an inner side lifting plate 25, the second sub-rear plate further comprises an outer side lifting plate 38, the inner side lifting plate 25 is arranged on a second middle reinforcing rib on the second sub-rear plate, the outer side lifting plate 38 is arranged on a second middle reinforcing rib on the second sub-rear plate, and the inner side lifting plate 25 and the outer side lifting plate 38 are connected in a matched mode; the two second fits are abutted.

The thickness of the first sealing plate 28 and the second sealing plate 31 is 20mm, and the sealing gap can be conveniently controlled by the arrangement of the inner lifting plate 25 and the outer lifting plate 38. The front sector plate 2 and the rear sector plate 3 are both welded.

Alternatively, as shown in fig. 1 to 3, in some embodiments, the static seal structure 4 includes a reinforcing rib 409, a front seal plate 411, an intermediate seal plate and a rear seal plate 413, one end of the front seal plate 411 is connected with a central tube of the heat exchanger, the other end of the front seal plate 411 is connected with one end of the intermediate seal plate, the other end of the intermediate seal plate is connected with the rear seal plate 413, the sides of the front seal plate 411 and the intermediate seal plate 413 are both connected with the side wall of the sector plate 1, and the side of the intermediate seal plate 413 facing away from the sector plate 1 is provided with the reinforcing rib 409.

Wherein, the intermediate seal board includes interior double expansion joint 401, splint 402, picture peg 403, backing plate 404 and apron 406, the one end and the fan-shaped board 1 welded connection of interior double expansion joint 401, the other end and the central truss welded connection of heat exchanger of interior double expansion joint 401, one side and the fan-shaped board 1 of splint 402 are connected, the opposite side and the one side of picture peg 403 of splint 402 are connected, the opposite side of picture peg 403 is connected with backing plate 404, backing plate 404 deviates from one side of picture peg 403 and is connected with apron 406, one side that apron 406 deviates from backing plate 404 is connected with the strengthening rib.

The inner double expansion joint 401 is welded with the upper fillet weld of the sector plate 1 in a sealing way, and the lower portion is welded with the truss after the truss is perforated; from the whole, the whole static sealing structure 4 adopts a double expansion joint structure in the inside and adopts a labyrinth sealing structure in the outside.

The reinforcing ribs 409 mainly serve to reinforce the labyrinth seal, and ensure that all the labyrinth seal steel plates are tightly attached without gaps.

Alternatively, as shown in fig. 1 to 3, in some embodiments, the three-way sealing plate structure 5 includes two first sealing plates 57, one ends of which are connected to the sector plate 1, and the other ends of which are connected to the rotor of the heat exchanger.

Alternatively, as shown in fig. 1 to 3, in some embodiments, the three-way sealing plate structure 5 further includes a second sealing plate 58, the second sealing plate 58 being located between the two first sealing plates 57, and both ends of the second sealing plate 58 being connected to the sector plate 1 and the rotor of the heat exchanger, respectively.

Alternatively, as shown in fig. 1 to 3, in some embodiments, the three-way sealing plate structure 5 further includes a third sealing plate 59, the third sealing plate 59 being located between one of the two first sealing plates 57 and the second sealing plate 58, and both ends of the third sealing plate 59 being connected to the sector plate 1 and the rotor of the heat exchanger, respectively.

Preferably, the three-way sealing plate structure 5 further comprises a first bolt 53, a first anti-slip gasket 54, a sealing plate pressing plate 55 and a first nut 55, wherein the upper parts of the first sealing plate 57, the second sealing plate 58 and the third sealing plate 59 are at the same height, the lower parts of the first sealing plate 57, the second sealing plate 58 and the third sealing plate 59 are flush and clung, and the first sealing plate, the second sealing plate and the third sealing plate are fixed with the sector plate 1 through fasteners to form two to four sealing structures which can be used for radial or axial sealing.

Alternatively, as shown in fig. 1-3, in some embodiments, the circumferential seal structure 6 includes a hot end circumferential seal piece 61, a circumferential angle steel 62, a first cold end circumferential seal piece 67, and a second cold end circumferential seal piece 68, the circumferential angle steel 62 is connected to the rotor of the heat exchanger, the hot end circumferential seal piece 61 and the first cold end circumferential seal piece 67 are both connected to the circumferential angle steel 62, and the second cold end circumferential seal piece 68 is disposed on a side of the first cold end circumferential seal piece 67 facing away from the circumferential angle steel 62.

The annular sealing piece structure 6 further comprises a second bolt 63, a hot end annular sealing piece pressing plate 64, a second anti-slip gasket 65, a second nut 66 and a cold end annular sealing piece pressing plate 69; the heat end annular sealing piece 61 is overlapped and used, is fixed with the annular angle steel 62 through a fastener such as a second bolt 63 and then forms heat end annular sealing with the rotor angle steel. The second cold end annular sealing sheets 68 and the cold end annular sealing sheet pressing plates 69 are similar to the hot end annular sealing sheets 61 and are overlapped and used, then each pair of second cold end annular sealing sheets 68 is tightly attached to each pair of cold end annular sealing sheet pressing plates 69, and are fixed with the annular angle steel 62 through fasteners such as second bolts 63 and then form cold end annular sealing with the rotor angle steel.

The central shaft seal structure 7 includes a connection flange 701, a seal copper ring cavity 702, a seal copper ring 703, a cylinder 704, a packing support 705, a seal packing 706, a compression ring 707, a lock bolt 708, a side fixing plate 709, a second cover plate 710, an upper fixing plate 711, a first fastener 712, a positioning pin 715, and a second fastener 716. The whole sealing structure adopts split type arrangement, and the copper ring is conveniently overhauled and replaced, and a half cavity is formed by welding a connecting flange 701, a sealing copper ring cavity 702, a cylinder 704, a packing support 705, a side fixing plate 709, a second cover plate 710 and an upper fixing plate 711, wherein two holes are formed on the opposite side of the cylinder 704 so as to drive sealing air. The sealing copper ring 703 is in split design and is tightly matched with the sealing copper ring cavity 702, the sealing packing 706 is arranged in three layers, the packing support 705 is tightly pressed in a shaft gap through the pressing ring 707, and the pressing ring 707 is in split design, so that the packing can be replaced conveniently. The two halves of the cavity are fixed by the side fixing plates 709 and the upper fixing plate 711, and the combined surface is coated with sealant and then fastened by fasteners.

The sectional sector plates 1 are adopted in the scheme, so that the overhaul difficulty of the sector plates 1 can be greatly reduced, the sector plates 1 can be more flexibly and controllably replaced, and the sector plates 1 can be replaced during overhaul for a large-scale heat exchanger; meanwhile, the inner sector plate 1 or the outer sector plate 1 can be selectively replaced according to the difference of the abrasion loss of the inner side and the outer side of the sector plate 1, and a large amount of cost can be saved. The two sides adopt the mode of combining the inner double expansion joint 401 structure with the labyrinth seal, the expansion amount is greatly improved compared with the single expansion joint type, and the sector plate 1 can be freely adjusted during hot running; the tail part is sealed in an expansion joint mode, so that fly ash in the flue gas is prevented from entering the sector plate 1, the later maintenance cost is reduced, and the cost is saved; the arrangement direction of the expansion joint is inward, so that the rapid abrasion of the expansion joint caused by the flushing of smoke and wind can be effectively solved, and the service life is greatly prolonged. The radial and axial flexible sealing systems are adopted, and the pressure of the heat exchange medium can be attenuated for a plurality of times when the heat exchange medium flows through the sealing sheets, so that the flowing trend of the heat exchange medium is reduced, and the sealing effect is good. Meanwhile, the bent part of the sealing piece adopts smooth transition, so that the air flow is stable when the fluid flows through, and the sealing piece is prevented from vibrating; the cold end annular seal adopts a four-piece two-by-two overlapped structure, forms multi-channel seal of the circumferential surface and the cross section with the rotor angle steel, can further reduce the seal gap at the cross section after the rotor mushroom-shaped deformed rotor angle steel is pressed down, has multiple guarantee, and has better seal effect.

The mode that adopts air seal and packing to seal to combine carries out effectual sealedly to the center shaft, in addition, adopts split type design, changes more easily after sealed copper ring or packing become invalid, reduces maintenance cost.

While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

The terms such as "upper", "lower", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present utility model, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present utility model without substantial modification of the technical content.

Claims (9)

1. The sealing device for the rotary heat exchanger is characterized by comprising a sector plate (1), a static sealing structure (4), a three-way sealing sheet structure (5), a circumferential sealing structure (6) and a central shaft sealing structure (7); one side surface of the static sealing structure (4) is abutted with the sector plate (1), the other side of the static sealing structure (4) is welded with a central truss of the heat exchanger, one end of the three-way sealing sheet structure (5) is connected with the sector plate (1), and the other end of the three-way sealing sheet structure (5) is connected with a rotor on the heat exchanger; the fan-shaped plate (1) is arranged on the side wall of the central cylinder of the heat exchanger, the central shaft sealing structure (7) is arranged on the cylinder body of the central cylinder of the heat exchanger, and the central shaft sealing structure (7) is positioned between the fan-shaped plate (1) and the central cylinder of the heat exchanger.

2. A sealing arrangement for a rotary heat exchanger according to claim 1, characterized in that the sector plate (1) comprises a front sector plate (2) and a rear sector plate (3), the front sector plate (2) and the rear sector plate (3) being detachably connected, the central shaft sealing structure (7) being located between the front sector plate (2) and the central cylinder of the rotary heat exchanger, the sides of the front sector plate (2) and the sides of the rear sector plate (3) both being in abutment with the static sealing structure (4), the three-way sealing plate structure (5) being arranged between the front sector plate (2) and the rotor of the heat exchanger.

3. A sealing arrangement for a rotary heat exchanger according to claim 2, characterized in that the front sector plate (2) comprises a first sub-front plate and a second sub-front plate, which are snap-connected, which are both arranged between the rear sector plate (3) and the central shaft sealing structure (7).

4. A sealing arrangement for a rotary heat exchanger according to claim 3, characterized in that the rear sector plate (3) comprises a first sub-rear plate and a second sub-rear plate, the first sub-rear half being snap-fit connected to the second sub-rear plate, the first sub-rear plate being detachably connected to the first sub-front plate, the second sub-rear plate being detachably connected to the second sub-front plate.

5. A sealing arrangement for a rotary heat exchanger according to claim 1, characterized in that the static seal structure (4) comprises a reinforcement rib (409), a front sealing plate (411), a middle sealing plate and a rear sealing plate (413), one end of the front sealing plate (411) is connected with the central cylinder of the heat exchanger, the other end of the front sealing plate (411) is connected with one end of the middle sealing plate, the other end of the middle sealing plate is connected with the rear sealing plate (413), the sides of the front sealing plate (411) and the rear sealing plate (413) are both connected with the side wall of the sector plate (1), and the side of the middle sealing plate facing away from the sector plate (1) is provided with the reinforcement rib (409).

6. A sealing arrangement for a rotary heat exchanger according to claim 1, characterized in that the three-way sealing arrangement (5) comprises two first sealing plates (57), one end of each of which is connected to the sector plate (1) and the other end of each of which first sealing plates (57) is connected to the rotor of the heat exchanger.

7. A sealing arrangement for a rotary heat exchanger according to claim 6, wherein the three-way sealing arrangement (5) further comprises a second sealing plate (58), the second sealing plate (58) being located between the two first sealing plates (57), the second sealing plates (58) being connected at both ends to the sector plate (1) and the rotor of the heat exchanger, respectively.

8. A sealing arrangement for a rotary heat exchanger according to claim 7, wherein the three-way sealing arrangement (5) further comprises a third sealing plate (59), the third sealing plate (59) being located between one of the two first sealing plates (57) and the second sealing plate (58), the third sealing plate (59) being connected at both ends to the sector plate (1) and the rotor of the heat exchanger, respectively.

9. The sealing device for a rotary heat exchanger according to claim 1, wherein the circumferential sealing structure (6) comprises a hot end circumferential sealing piece (61), a circumferential angle steel (62), a first cold end circumferential sealing piece (67) and a second cold end circumferential sealing piece (68), the circumferential angle steel (62) is connected with a rotor of the heat exchanger, the hot end circumferential sealing piece (61) and the first cold end circumferential sealing piece (67) are both connected with the circumferential angle steel (62), and the second cold end circumferential sealing piece (68) is arranged on one side of the first cold end circumferential sealing piece (67) away from the circumferential angle steel (62).

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