JP2003343730A - Plate brush seal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the sealing performance of a plate brush seal and to prevent the wear-out caused by friction by giving flexibility to the plate brush seal. <P>SOLUTION: A back plate part 6 and/or a holder plate 10 has a presser part, by which a first brush part 4A1 is inserted into a slit 4A2 and a second brush part 4A1 is inserted into a first slit 4A2 so that a first plate brush part 4A and the second plate brush part 4A are engaged with each other. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate brush seal for sealing between a shaft and a relative component which is relatively displaced.
More specifically, the present invention relates to an improved technique of a plate brush seal for sealing between a rotary shaft of an aircraft, a gas turbine, etc. and a relative component that is relatively displaced.

[0002]

2. Description of the Related Art The prior art relating to the present invention includes a brush seal device 100A shown in FIG. FIG. 7 is a cross-sectional view of the brush seal device 100 mounted between the rotating shaft 120 and the casing 110 that penetrates the rotating shaft 120. The casing 110 serves as a stationary component such as a steam turbine or a gas turbine. The brush seal device 100A is attached to the casing 110 so that the rotary shaft 1
The space between 20 and 20 is partitioned to seal the sealed fluid.

In FIG. 7, a brush seal device 100A
Is formed in a ring shape and is attached to the attachment groove portion 112 of the casing 110. This brush seal device 10
The main components of 0A are the brush seal 109 and the back plate 102.
And the support plate 103. In this brush seal 109, bristles 101 are bundled in a certain thickness along the circumference and arranged in a wall shape, and one ends thereof are joined to form a mounting portion 104. The free end surface 105 of the brush seal 109 is arranged so as to face the rotary shaft 120. The wire diameter of the bristles 101 is generally 0.02 mm to 0.5 mm. And the number becomes tens of thousands and hundreds of thousands.

On the side surface of the brush seal 109, a back plate 102 formed in an annular shape is provided on the side surface 108 of the brush seal 1.
The back plate 102 supports the bristles 101 so as not to be deformed by the pressure of the sealed fluid. Further, on the other surface of the brush seal 109, a holding plate 103 is formed as a ring plate so as to sandwich the mounting portion 104 side of the brush seal 109 between the holding plate 103 and the back plate 102. The holding plate 103 has a narrow radial width to expose the brush seal 109 to the sealed fluid side so that the free end side of the brush seal 109 is easily elastically deformed.
Then, the mounting portion 10 of the back plate 102 and the brush seal 109
4 and the holding plate 103 are welded at one end to each other to form a joint 106.
Is done.

The straight bristles 101 shown in FIG.
It is inclined with respect to the radial direction of 0 in the direction in which the rotary shaft 120 rotates. The normal state of this brush seal 109 is shown in FIG.
The rotating shaft 120 is in contact with or close to the free end surface 105 as indicated by the solid line.

Further, the brush seals 109 are arranged in a bundle having a certain thickness with the bristles 101 and arranged in the circumferential direction.
The free end surface 105 of the brush seal 109 is precision-finished by a wire electric discharge machine or the like so as to fit on the rotating shaft. However, since the bristles 101 are easily deformed, this processing is extremely difficult.

In the brush seal device 100A constructed as described above, when the rotating shaft 120 comes into contact with the brush seal 109 due to vibration or swing, the brush seal 109
Also increases the tilt angle inclined in the rotation direction while being in pressure contact with the rotating shaft 120. In this state, when the pressure of the sealed fluid is the high pressure P1, the differential pressure (P1-P2) from the low pressure P2 becomes large, so the brush seal 109
The straight bristles 101 are elastically deformed and bent, and random gaps are generated between the bristles 101.

FIG. 8 is a front view of the brush seal 109 of FIG. 7 viewed from the inner diameter side free end surface 105. In FIG. 8, when the sealed fluid enters between the straight bristles 101, the bristles 101 bundled as seen from the inner peripheral surface side are
As shown in FIG. 8, the gap between the two is pushed by the fluid to be sealed and becomes a large gap, so that the fluid to be sealed leaks from the divided gap. This action is further such that when the bristles 101 in the inclined state are separated by the pressure, the separated one side tends to be displaced so as to be smaller than the set inclination angle, so that the tip portion of the bristles 101 is rotated. Since the contact state with the shaft 120 is further strengthened, the pressure contact force is further increased and wear is caused. When the free end surface 105 of the bristles 101 is worn, the sealed fluid leaks from between the worn free end surface 105 and the rotating shaft 120.

When the rotary shaft 120 swings in such a state, the free end surface 105 of the bristles 101 is on the radially opposite side of the brush seal 101, which passes through the shaft center with respect to the position where the brush seal 101 is pressed against the rotary shaft 120. Since the gap C between the rotary shaft 120 and the rotary shaft 120 becomes large, the sealed fluid leaks from the gap C. Thus, the sealing of the fluid to be sealed by the bristles 101 has a problem to be solved.

Further, as another conventional technique, there is a brush seal device 100B shown in FIG. In FIG. 9, thin plate seals 209 are stacked in the circumferential direction of the rotary shaft 120 in a stacked state to seal the high pressure side region P1 and the low pressure side region P2. The outer peripheral portion of the plate seal 209 is brazed to form the attachment portion 104, and is attached to the groove portion of the casing 110 via the brazed attachment portion 104. A back plate 102 is arranged on the side surface of the low-pressure side region P2 of the plate seal 209, and a holding plate 103 is arranged on the side surface of the high-pressure region side P1. It supports both sides of 209.

However, the plate seal 20 formed in this way
On the other hand, when the rotary shaft 120 is eccentrically pressed against the plate 9, the plate seal 209 that only forms an arc is not easily elastically deformed, and the spring constant corresponding to the elastic deformation is large. It causes a problem that it becomes difficult to follow. For this reason, since the distance between the free end surface of the plate seal 209 and the outer peripheral surface of the rotor 120 is large, a problem arises in the ability to seal the sealed fluid.

Further, since the plate seal 209 which is joined and laminated in the direction in which the pressure of the sealed fluid acts is only a flat plate, the pressure of the sealed fluid acting in the direction between the joining surfaces of the flat plates is A problem arises in the sealing ability to prevent the leak of the sealed fluid, which easily flows out from the joint gap of the flat plates. Furthermore, the laminated structure having a structure in which the flexibility is impeded results in early wear of the free end surface 105 of the plate seal 209.

[0013]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and its technical problem is to impart flexibility to a plate brush seal and to improve its sealing ability. To improve. Furthermore, the elastic deformation capability of the plate brush seal against the pressing force from the facing component is improved, and the sealing capability against the sealed fluid is improved,
In addition, it is to reduce the abrasion of the plate brush seal by the opposing parts. Another object of the present invention is to improve the contact force of the plate brush seal with the opposing component and the followability to cope with fluctuations, to reduce the energy of power, and to improve the sealing ability against fluctuations.

[0014]

The present invention has been made to solve the above problems, and the technical means for solving the problems are configured as follows.

The plate brush seal of the present invention according to claim 1 is a plate brush seal which is attached to the one part between the parts that move relative to each other with a gap and seals between the other part. And has a laminated base attached to the one component and a first thin beam on the other component side.
A first brush seal veneer having a first plate brush part in which brush portions and first slits are alternately arranged; and a first brush seal veneer formed in the same shape as the first brush seal veneer with respect to the first brush part A second brush seal veneer having a second plate brush portion in which the second slit faces the second slit and the second brush portion faces the first slit; and the first brush seal veneer and the second brush. A brush seal plate in which a single seal plate is laminated in a pair, a back plate portion supporting one or more side surfaces of the brush seal plate, and the brush seal plate is sandwiched between the back plate portion. A holding plate, wherein the back plate portion and / or the holding plate is provided with the first brush portion and a second brush portion.
The second brush portion is inserted into the slit and the second brush portion is inserted into the first slit, so that the first plate brush portion and the second plate portion are mutually inserted.
It has a pressing portion that meshes with the plate brush portion.

In the plate brush seal of the present invention according to claim 1, the brush seal plate is a pair of first and second brush seal single plates, and the brush portion and the slit are the pressing portion of the back plate portion and the holding plate portion. Since the depths of being pressed by the pressing portion and meshing with each other toward the free end portion become deeper, the gaps on the side surfaces of the brush portions come into close contact with each other, and the sealing ability can be dramatically improved. Moreover, the plate brush portion has an elastic deformation force because the meshing depth is shallow on the side of the laminated base portion, so that the plate brush portion softens friction against contact of the other component and effectively prevents abrasion.

In this plate brush portion, the fluid to be sealed is partitioned by the back plate portion on the laminated base side, so that the fluid to be sealed is sealed by the back plate portion. For this reason, elastic deformation is imparted rather than the sealing ability on the side of the laminated base portion where the contact depths of the respective brush portions of the plate brush portion that mesh with each other are shallow. Further, on the free end side of the plate brush portion, the depth of meshing of the brush portions with each other is deepened to improve the sealing ability.
As a result, the plate brush seal exhibits flexibility as well as sealing ability, and wear due to corrosion with the abutting component is effectively prevented.

In the plate brush seal of the present invention according to claim 2, the depth at which the first plate brush portion and the second plate brush portion of the plurality of laminated brush seal plates mesh with each other is a free end portion. The pressing portion is sandwiched so as to be gradually deepened toward the end.

In the plate brush seal of the present invention according to claim 2, the first plate brush portion and the second plate brush portion are gradually meshed toward the free end portion so that the depths thereof become deeper. Therefore, the free end side of the plate brush seal is formed into a brush portion with no gap, and the sealing ability is improved. Since the meshing depth of each brush portion is shallow on the laminated base portion side of the brush portion, an elastic deformation force is applied to the brush portion so that the brush portion is softly contacted against the contact with the facing component, and wear is effectively prevented.

In the plate brush seal of the present invention according to claim 3, the brush seal plates are laminated and the joining surfaces of the brush portions are arranged in a zigzag pattern in the laminating direction.

In the plate brush seal of the present invention according to claim 3, when the brush seal plates are stacked, they are stacked such that the bonding surfaces of the adjacent brush portions and the slits are shifted so as not to communicate in the stacking direction. Further, the sealing ability can be improved.

In the plate brush seal of the present invention according to claim 4, a solid lubricant is applied to a surface of the back plate portion and / or the holding plate to be joined to the brush seal plate.

In the plate brush seal of the present invention according to claim 4, since the solid lubricant is applied to the back plate portion and / or the surface of the holding plate to be joined with the brush seal plate, the brush seal plate is the back plate portion. Alternatively, the brush is pressed against the holding plate, but the effect of the lubricant facilitates elastic deformation of the brush portion against the contact with the facing component. For this reason, it is possible to effectively prevent abrasion even if it rubs against the facing component.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION A plate brush seal according to an embodiment of the present invention will be described in detail below with reference to the drawings.
Note that the following drawings are design drawings, not conceptual drawings as patent drawings.

FIG. 1 shows a half of the plate brush seal device 1 of the first embodiment, which divides a gap between both parts in which a rotor 60 is fitted into a hole of a casing 50 of a gas turbine into a high pressure P1 side and a low pressure P2 side. FIG. 2 is a half cross-sectional view of the assembled state before the plate brush seal shown in FIG. 1 is clamped by the back plate and the holding plate. FIG. 3 is a half sectional view of the plate brush seal 2 showing the first embodiment according to the present invention. Further, FIG. 4 is a half sectional view of a plate brush seal 2 showing a second embodiment according to the present invention. FIG. 5 is a plan view of the plate brush seal 2 of the third embodiment of the present invention. FIG. 6 is a plan view of the brush seal single plate 4 according to the fourth embodiment of the present invention.

In FIG. 1, reference numeral 1 is a plate brush seal device. The plate brush seal device 1 refers to the entire mounting structure shown in FIG. Fixed part 20 of plate brush seal device 1
Is attached to the step portion 51 provided on the inner peripheral surface of the casing 50, which is one of the components, via the snap ring 12. There are various types of attachment of the fixing portion 20, and the fixing portion 20 can also be attached to the groove portion 51 of the combined structure in the casing 50. Further, the free end portion 5 on the inner peripheral side of the plate brush seal 2 is arranged in contact with or close to the outer peripheral surface of the rotor (hereinafter, also referred to as a rotary shaft) 60 which is the other component. Then, the plate brush seal 2 seals the sealed fluid on the high pressure P1 side.

In FIG. 1, the plate brush seal 2 has a structure in which a back plate portion 6 and a holding portion 10 are attached to both sides of the brush seal plate 3 laminated. The back plate portion 6 and the holding portion 1
Reference numeral 0 is an auxiliary component of the plate brush seal 2. The plate brush seal 2 generally has a laminated structure of a plurality of brush seal plates 3. However, when the pressure of the fluid to be sealed is small depending on the seal structure, the seal works even with a single structure.

This plate brush seal 2 is formed by laminating six sheets of a pair of brush seal plates 3 in a laminated state and forming an annular body of a certain thickness. Further, the brush inner side of the brush seal plate 3 forming an annular shape constitutes a single brush portion 3A by a row of thin beams inclined in the rotation direction of the rotor 60. Further, the inner peripheral side of the plate brush seal 2 has a laminated structure of single brush portions 3A described below. Further, the laminated base portion 3B on the outer periphery of the brush seal plate 3 is laminated to form the attachment portion 2A of the plate brush seal 2. The outer peripheral surface of the mounting portion 2A is integrated by welding or the like.

Of the pair of brush seal plates 3, one first brush seal single plate 4 is the first plate brush portion 4A.
And a first base portion 4B. In the first plate brush portion 4A, the first slits 4A2 in which the inner peripheries of annular thin plates are formed in parallel are formed in the thin beam-shaped first brush portions 4A1 between the first slits 4A2. The cross section of the first beam portion 4A1 of the thin beam is formed in a rectangular shape or a square shape. The overall shape of the first brush portion 4A1 and the first slit 4A2 is the free end portion 5 in the plate direction.
It is formed in one row of unevenness. In addition, the outer periphery is a plate-shaped first
It is formed on the base portion 4B.

Further, the second brush seal single plate 4 is also formed similarly to the first brush seal single plate 4. Also on the second brush seal single plate 4, the inner peripheral side of the annular thin plate is provided with the second brush portion 4A1 and the second slit 4A2 in a concavo-convex shape in the plate direction to form the second plate brush portion 4A. Also, the second
A second base portion 4B is formed in a plate shape opposite to the plate brush portion 4A. The thin beam of the second brush portion 4A1 has a rectangular or square cross section. However, depending on the ring-shaped size of the brush seal single plate 4, this shape may be different from that of the first brush portion 4A1 and the second brush portion 4A1 as shown in FIG.
The brush portion 4A1 may not always have the same shape when seen in a plan view.

The pair of brush seal plates 3 is formed by laminating the first brush seal single plate 4 and the second brush seal single plate 4. The lamination of the first brush seal single plate 4 and the second brush seal single plate 4 is such that the first plate brush portion 4A and the second plate brush portion 4A are inserted through the second slit 4A2 and the first slit 4A2, respectively. Be meshed. The plate brush seal 2 is composed of a single layer or a plurality of layers of the brush seal plate 3.

FIG. 2 shows an assembled state in the previous step of forming the plate brush seal 2. In this embodiment, the above-mentioned brush seal plate 3 is made into six layers and is sandwiched from both sides by the ring-shaped back plate portion 6 and the holding plate 10 to form the plate brush seal 2 of FIG. In FIG. 2, the back plate portion 6 and the holding plate 10 are provided with pressing portions 6A and 10A, respectively, on their ring-shaped inner peripheral sides. When the back plate portion 6 and the holding plate 10 are sandwiched so as to face each other from both sides with the outer peripheral surface of the brush seal plate 3 being substantially the same, the pressing portions 6A of the back plate portion 6 and the holding plate 10 respectively.
10A meshes the first plate brush portion 4A and the second plate brush portion 4A with each other through the second and first slits 4A2 and 4A2. Since the pressing portions 6A and 10A are formed on the inner circumferential side of the back plate portion 6 and the holding plate 10, when the brush seal plate 3 is sandwiched between the back plate portion 6 and the holding plate 10, the first plate brush portion is formed. 4A and the 2nd board brush part 4A will mesh deeply toward an inner peripheral side via the 2nd slit 4A2 and the 1st slit 4A2.

The axial dimension of the free end 5 of the plate brush seal 2 is joined to 1/2 of the length of the laminated base 3B of the plate brush seal 2 in the same direction. Since the free end portion 5 side of the plate brush seal 2 is completely meshed until the meshing depth of each brush portion 4A1, 4A1 becomes one plate shape, there is a gap between the joint surfaces of each brush portion 4A1, 4A1. Is less. The mounting portion 2B side of the brush portion 2A is in a state of being hardly meshed with the laminated base portion 3B. Therefore, the cross-sectional shape of the brush portion 2A becomes trapezoidal.
As a result, in the brush portion 2A, the brush portion 4A1 is densely bonded on the free end portion 5 side, so that the sealing ability for partitioning the sealed fluid is improved. On the contrary, since the brush portion 4A1 is sparsely bonded on the laminated base portion 2B side of the brush portion 2A,
Elastic deformation ability is given. To this end, the brush portion 2A
Of the laminated base portion 2B for improving the sealing ability of the sealing portion and holding the sealing portion on the free end 5 side.
The side is imparted with elastic deformation ability to exhibit flexibility.

As with the brush seal plate 3 shown in FIG. 2, the plate brush seal 2 shown in FIG. 3 is formed by laminating a plurality of sheets to form an annular body. The brush seal plate 3 is sandwiched as shown in FIG. The back plate portion 6 and the holding plate 10 are
Unlike that of FIG. 1, the pressing portions 6A and 10A are the back plate portion 6
And a convex portion is formed on the inner peripheral edge of the holding plate 10. When the brush seal plate 3 is sandwiched and assembled by the back plate portion 6 and the holding plate 10, the brush seal plate 3 has the same structure as the plate brush seal 2 shown in FIG. Other configurations of the plate brush seal 2 of FIG. 3 are the same as the configurations described in FIG.

The plate brush seal 2 shown in FIG.
The outer diameter and the inner diameter of the holding plate 10 are substantially the same. The pressing portion 10 is provided in the middle of the side surface of the holding plate 10.
A is formed. Other configurations are substantially the same as the plate brush seal 2 in FIG.

A solid lubricant is coated on the side surfaces of the back plate portion 6 and the holding plate 10 which are joined to the brush seal plate 3. Therefore, in the plate brush seal 2 shown in FIG. 1, even if the brush seal plate 3 is sandwiched between the back plate portion 6 and the holding plate 10, the flexibility of the brush seal plate 3 is exhibited.
In addition, the plate brush seal 2 shown in FIGS.
Since A and 10A project in a convex shape, the contact area with the brush seal plate 3 is reduced, and the elastic deformation capability of the brush portion 2A is improved. Therefore, even if the plate brush seal 2 comes into contact with the other component, it is less likely to be worn.

FIG. 5 is a plan view in which the plate brush seal 2 is attached to the rotor 60. Further, its sectional view is as shown in FIG. The brush seal single plate 4 is obtained by connecting the divided pieces of the plate brush seal divided pieces 4C through the engaging portions 12 and connecting them to the annular plate. The brush seal single plates 4 are stacked in the axial direction. In this laminated state, the back plate portion 6 and the pressing portions 6A and 10A of the holding plate 10 cause the first brush portion 4A1 and the second brush portion 4A1 of the pair of the first and second brush seal veneers 4 to move as shown in FIG. Similar to the brush seal plate 3, the brush seal plates 3 are paired with each other while engaging with each other toward the free ends 5 while increasing the depth of engagement. Since this plate brush seal divided piece 4C is a divided piece, it can be manufactured in large numbers from thin plates. Therefore, even a large-diameter plate brush seal 2 is used as the brush seal single plate 4 because the yield is improved. The other structure is similar to that of FIG. The plate brush seal 2 has a large diameter. In addition, plate brush seal divided piece 4C
Can be easily manufactured from a thin plate by microfabrication such as etching, wire electric discharge machining, laser machining, and electron beam machining.

FIG. 6 is a plan view of the first brush seal single plate 4 on one side of the brush seal plate 3. The first brush seal veneer 4 is manufactured as a ring plate from a thin plate by fine processing such as etching processing, wire electric discharge processing, laser processing, and electron beam processing. The second brush seal single plate 4 is also formed in substantially the same manner as the first brush seal single plate 4. The first brush seal single plate 4 and the second brush seal single plate 4 are
The brush seal plate 3 is formed by combining the pairs. Furthermore,
When the brush seal plates 3 are combined in a laminated state and sandwiched by the back plate portion 6 and the holding plate 10 from both sides as shown in FIG. 2, the first and second brush portions 4A1 and 4A1 are meshed with each other, and the first and second brush portions 4A1 and 4A1 are meshed. The plate brush seal 2 as shown in FIG. Note that, in FIGS. 5 and 6, the second brush portion 4A1 is formed in a planar shape that fits with the trapezoidal first slit 4A2 when stacked on the brush seal plate 3 in a plan view.

The laminated thickness of the brush seal single plate 4 of the above-described embodiment is in the range of 0.5 to 5 mm, and this laminated thickness is determined by the pressure of the fluid to be sealed. Further, as the material of the plate brush seal single plate 3, steel, stainless steel, nickel-based alloy, ceramic material or the like is used.

[0040]

According to the plate brush seal of the present invention, the brush seal plate is a pair of first and second brush seal single plates, and the brush portion and the slit press the back plate portion and the holding plate portion. Since the portions are pressed and mesh with each other, the brush portion and the brush portion mesh with each other toward the free end portion side. For this reason, the gaps on the joint surfaces of each brush part are close,
It is possible to dramatically improve the sealing ability. In addition, the plate brush portion exerts elastic deformation capability because the meshing depth is shallow on the laminated base side, and effectively reduces friction and wear against the contact of the other component.

In this plate brush portion, the fluid to be sealed is partitioned by the back plate portion on the laminated base side, so that the fluid to be sealed is sealed by the back plate portion. For this reason, elastic deformation is imparted rather than the sealing ability on the side of the laminated base portion where the contact depths of the respective brush portions of the plate brush portion that mesh with each other are shallow. Further, on the free end side of the brush portion, the depth at which the brush portions are engaged with each other can be arbitrarily set by the protruding height of the pressing portion of the back plate portion and the holding plate, and the sealing ability as needed can be improved. it can. In particular, if the meshing depth of the brush portion is increased toward the free end, the sealing effect is further improved. As a result, the plate brush seal exhibits flexibility as well as sealing ability, and wear due to corrosion with the abutting component is effectively prevented.

Further, in the plate brush seal, since the surfaces of the brush portions where the respective brush portions are joined can be formed in a zigzag shape in the working direction of the sealed fluid, the sealing effect of the sealed fluid is improved.
Also, by coating the surface of the back plate portion and / or the holding plate that contacts the brush seal plate with a solid lubricant, the brush seal plate is elastically deformed even if it comes into contact with the other part, and the responsiveness to the contact It becomes possible to improve. Therefore, abrasion of the brush portion can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a half sectional view of a plate brush seal device showing a first embodiment according to the present invention.

FIG. 2 is a half cross-sectional view of the plate brush seal shown in FIG. 1 in an assembled state in a previous step.

FIG. 3 is a half sectional view of a plate brush seal showing a first embodiment according to the present invention.

FIG. 4 is a half sectional view of a plate brush seal showing a second embodiment according to the present invention.

FIG. 5 is a plan view of a plate brush seal showing a third embodiment according to the present invention.

FIG. 6 is a plan view of a brush seal single plate showing a fourth embodiment according to the present invention.

FIG. 7 is a half sectional view of a conventional brush seal device.

8 is a plan view of the brush seal as viewed from the inner circumference of the brush seal device shown in FIG. 7 when a fluid to be sealed acts thereon.

FIG. 9 is a perspective view of another conventional brush seal device.

[Explanation of symbols]

1 plate brush seal device 2 plate brush seal 2A brush part 2B mounting part 3 Brush seal plate 3A brush unit 3B laminated base 4 First and second brush seal veneer 4A First and second plate brush section 4A1 First and second brush parts 4A2 First and second slits 4B First and second bases 4C plate brush seal divided piece 5 Free end 6 Back plate 6A, 10A pressing part 10 Holder 12 Engagement part 20 Fixed part 50 One part (casing) 60 Other part (rotor)

Claims (4)

[Claims] 1. A plate brush seal that is attached to the one component between components that move relative to each other with a gap and seals between the other component, the laminate base being attached to the one component. And a first brush seal veneer having a first plate brush portion in which the first brush portions and the first slits of thin beams are alternately arranged on the other component side.
A second brush formed in the same shape as the first brush seal single plate so that the second slit faces the first brush portion and the second brush portion faces the first slit;
A second brush seal single plate having a plate brush portion; a brush seal plate in which the first brush seal single plate and the second brush seal single plate are laminated in a pair; and one layer of the brush seal plate or A back plate portion supporting side surfaces of a plurality of layers; and a holding plate that holds the brush seal plate between the back plate portion, and the back plate portion and / or the holding plate has the first brush portion. Is inserted into the second slit and the second brush portion is inserted into the first slit, and the press plate has a pressing portion that meshes the first plate brush portion and the second plate brush portion with each other. Brush seal. 2. The depth of meshing is gradually increased toward the free end by meshing the first plate brush part and the second plate brush part of the plurality of laminated brush seal plates. The plate brush seal according to claim 1, wherein the plate brush seal has the pressing portion that is clamped to a size. 3. The plate brush seal according to claim 1, wherein the brush seal plates are stacked and the bonding surfaces of the brush parts are arranged in a zigzag shape in the stacking direction. 4. The solid lubricant is applied to a surface of the back plate portion and / or a surface of the holding plate to be joined with the brush seal plate, according to claim 1, 2, or 3. Plate brush seal described.