JP4091807B2 - Manufacturing method of plate brush seal split veneer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a plate brush seal split single plate which is a component of a plate brush seal that seals between a shaft and a relative component that is relatively displaced.
More specifically, for example, a method for manufacturing a plate brush seal split single plate that is a component of a plate brush seal that seals between a rotating shaft and a relative component that is relatively displaced, such as an aircraft or a gas turbine.
[0002]
[Prior art]
A related art relating to the present invention includes a brush seal device 100A shown in FIG.
FIG. 11 is a cross-sectional view of the brush seal device 100A attached to the casing 110 through which the rotary shaft 120 passes. This brush seal device 100A is attached to the casing 110 and seals the fluid to be sealed by partitioning the rotary shaft 120 with the bristles 101.
[0003]
In FIG. 11, the brush seal device 100 </ b> A is formed in a ring shape and attached to the attachment groove 112 of the casing 110. The main components of the brush seal device 100A are a brush seal 109, a back plate 102, and a support plate 103. In the brush seal 109, the bristles 101 are bundled in a certain thickness along the circumference and arranged in a wall shape, and one end portions thereof are joined to form the attachment portion 104. Further, the free end surface 105 of the brush seal 109 is disposed so as to face the rotating shaft 120. The wire diameter of the bristles 101 is generally 0.02 mm to 0.2 mm. And the number is tens of thousands and hundreds of thousands.
[0004]
On the side surface of the brush seal 109, an annular back plate 102 is disposed with the side surface 108 in contact with the brush seal 109. The back plate 102 receives the pressure of the sealed fluid and deforms the bristles 101. Support not to.
A holding plate 103 is formed as a ring plate on the other surface of the brush seal 109 so as to hold the mounting portion 104 side of the brush seal 109 with the back plate 102. The holding plate 103 is narrow in the radial direction so that the free end side of the brush seal 109 can exhibit a degree of freedom of movement so that the brush seal 109 is exposed to the sealed fluid side.
[0005]
The back plate 102, the attachment portion 104 of the brush seal 109, and the holding plate 103 are welded at one end to form a coupling portion 106.
Since the bristles 101 are formed from thin wires in the coupling portion 106 as described above, the bristle 101 is sandwiched between the thick back plate portion 102 and the holding plate portion 103 by the bristles 101 and welded. Melts faster than the back plate portion 102 and the holding plate portion 103, and must be welded by a special welding machine. This increases manufacturing costs.
[0006]
The brush seal 109 is bundled in a thickness with tens of thousands of bristles 101 and arranged along the circumferential direction. Further, the bristles 101 are inclined in the rotating direction of the rotating shaft 120 with respect to the radial direction of the rotating shaft 120.
Arranging the bristles 101 in such a state makes the bristles 101 difficult to arrange because the bristles 101 are thin and short.
[0007]
In the normal state of the brush seal 109, the rotating shaft 120 is in contact with or close to the free end face 105 as shown by the solid line in FIG. For this purpose, 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 be fitted to the rotating shaft. However, since the bristles 101 are easily deformed, this processing is extremely difficult. Furthermore, since the bristles 101 are manufactured from thin wires, it is difficult to improve the sealing performance by flowing out the sealed fluid from between the bristles 101.
[0008]
As another related technique, there is a brush seal device 100B shown in FIG. This FIG. 12 seals the high pressure side region P1 and the low pressure side region P2 by stacking thin plate seals 209 in the circumferential direction of the rotating shaft 120 in a laminated state. The outer peripheral portion of the plate seal 209 is brazed 205 and formed on the mounting portion 104. And it attaches to the groove part of the casing 110 through the attaching part 104 brazed 205 . In addition, a back plate 102 is disposed on the side surface of the low pressure side region P2 of the plate seal 209, and a holding plate 103 is disposed on the side surface of the high pressure region side P1. 209 supports both sides of 209. Then, sealing the sealed fluid by the leaf seal 20 9.
[0009]
However, since the plate seal 209 is rigid, the gap between the free end surface of the plate seal 209 and the outer peripheral surface of the rotary shaft 120 must be assembled large, which causes a problem in the ability to seal the sealed fluid. It is difficult to assemble the gap between the seal 209 and the rotating shaft 120 uniformly.
In addition, since the plate seal 209 must be formed by processing a thin plate having a thickness of 0.02 to 0.2 mm into a square shape and bending it into an arc shape, it is difficult to bend the plastic plate into the arc shape. Furthermore, since it is laminated | stacked on the surrounding surface of the rotating shaft 120, hundreds of thousands of sheets must be laminated | stacked, and a spacer is provided between the lamination | stacking of each board seal | sticker 209 by the dimension from which the laminated | annular outer periphery side is larger diameter than an internal diameter. There must be. These processing and assembly operations become difficult.
[0010]
Furthermore, since the plate seal 209 bonded and stacked in the direction in which the pressure of the fluid to be sealed is applied is only a flat plate, it seems easy to press-cut the outer periphery, but the thickness of the plate seal plate 209 is small. When it becomes thin, the cut surface to be cut by press is cut so as to be bent, and when the plate seal plate 209 is laminated, the burr of the cut surface creates a gap in the laminated arrangement and the sealing ability is lowered.
[0011]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and its technical problem is to facilitate the processing of the plate brush seal and to manufacture it at low cost.
Furthermore, it is in improving the yield of the material of a plate brush seal. It is another object of the present invention to facilitate the assembly of the plate brush seal and reduce the assembly cost.
[0012]
And it is in improving the processing precision of the plate brush part of a board bra seal single plate, especially the free end part of a board brush part, and demonstrating sealing capability. Furthermore, it is to make it possible to easily perform the size and processing of the required shape even if the thickness of the plate bra seal single plate is thin.
[0013]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and technical means for solving the problems are configured as follows.
[0014]
A plate brush seal manufacturing method according to a first aspect of the present invention is a plate brush seal plate which is attached to the one part between the relatively moving parts with a gap and seals between the other part. A method for manufacturing a brush seal split single plate, comprising: a plate brush seal split single plate having a slit provided to form a brush portion and an integral base portion at one end of the brush portion; and the plate brush seal split single plate. After the processing, the connecting portion connecting the plate brush seal split single plate and the metal thin plate is registered in the metal thin plate, and the outer shape of the resisted metal thin plate is finely processed to form the plate brush seal split single unit from the metal thin plate. The external shape of a board and the said connection part is cut out, and a connection part is cut | disconnected after that and a plate brush seal division | segmentation single plate is isolate | separated from the said metal thin plate.
[0015]
In the manufacturing method of the plate brush seal division | segmentation single plate of this invention concerning this Claim 1, a brush part and a slit are alternately formed in the side sealed by fine processes, such as an etching, from a metal thin plate, and the board which has flexibility In addition to processing into the shape of the brush part and cutting the outer shape, the plate brush seal split single plate is connected via the connecting part so that the brush part can be processed to an accurate dimension and the outer shape can be processed accurately. Since it is held by a thin metal plate, fine processing of the plate brush seal split single plate can be formed with accurate dimensions.
In addition, since each plate brush seal divided single plate is held by each connecting portion when the plate brush seal divided single plate is cut out by etching or the like, a large number of plate brush seal divided single plates are cut out from the metal thin plate without gaps. It becomes possible. For this reason, the yield from a metal thin plate improves. And it becomes possible to reduce manufacturing cost.
Moreover, since the metal thin plate is formed by a process such as etching that does not act on the stress, the thin plate can be easily processed, and flexibility can be imparted to the plate brush portion. In addition, the plate brush seal split single plate held by the connecting portion during processing can improve the dimensional accuracy of the plate brush portion, and can drastically reduce the manufacturing cost.
[0016]
According to a second aspect of the present invention, there is provided a method of manufacturing a plate brush seal split veneer according to the present invention, wherein the connecting portion is processed into a shape connected to the base portion in a recess of the base portion, and a cutting groove crossing the connecting portion is processed. After cutting into the plate brush seal split single plate, the cutting groove is cut and separated from the metal thin plate.
[0017]
In the manufacturing method of the plate brush seal split single plate of the present invention according to claim 2, since the base and the connecting portion are connected in the recess of the base, stress is applied to the base when cutting from the cutting groove of the connecting portion. The stress concentrates on the cutting groove of the connecting portion without acting, and it becomes possible to cut easily.
Further, since the connecting portion is connected to the concave portion of the base portion, the connecting portion can be separated without protruding from the base portion. For this reason, when assembling a plate brush seal division | segmentation single plate, it can prevent becoming a malfunction by a connection part.
[0018]
According to a third aspect of the present invention, there is provided a method for manufacturing a plate brush seal split single plate, wherein the resist is an etching resist process, the fine processing is an etching process, and a pressing plate is integrally processed at a free end of the brush portion. And processing the connecting plate and the metal thin plate connected by the connecting portion, processing a cutting groove along the boundary between the holding plate and the brush portion, and processing into the plate brush seal split single plate Then, the connecting portion is cut, and then the holding plate is cut from the brush portion along the cutting groove.
[0019]
In the manufacturing method of the plate brush seal divided veneer according to the third aspect of the present invention, since the metal thin plate is coupled to the holding plate connected to the brush portion through the connecting portion, the plate brush seal divided veneer is suppressed. It becomes possible to hold | maintain to a metal thin plate during a process via a board. And when assembling a plate brush seal division | segmentation single plate, since a control board is cut | disconnected from a plate brush seal division | segmentation single plate, it can prevent that a connection part remains in a plate brush seal division | segmentation single plate. For this reason, it becomes possible to process the processing dimensions of the plate brush seal divided single plate accurately by holding the plate brush seal divided single plate very effectively.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the manufacturing method of the board brush seal about an embodiment concerning the present invention is explained in full detail based on a drawing. In addition, the following drawings are drawings based on a design.
[0021]
First, the structure of the plate brush seal apparatus 1 which assembled the plate brush seal 2 of this invention is demonstrated.
FIG. 1 is a half cross-sectional view of a plate brush seal device 1 assembled so as to partition 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 plan view of the plate brush seal 2 shown in FIG. Further, FIG. 3 is a plan view of a plate brush seal single plate 3 which is a component part of the plate brush seal 2 of FIG. Further, FIG. 4 is a plan view of a part of the plate brush seal split single plate 4 which is assembled to the plate brush seal single plate 3 of FIG.
[0022]
In FIG. 1, reference numeral 1 denotes a plate brush seal device. The plate brush seal device 1 refers to the entire structure in which the plate brush seal 2 is assembled to the casing 50. The fixing part 20 of the plate brush seal device 1 is attached via a snap ring 14 to a step part 51 provided on the inner peripheral surface of the casing 50 which is one of the constituent parts. 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 60 which is the other component. Then, the sealed fluid on the high pressure P1 side is sealed by the plate brush seal 2.
[0023]
In FIG. 2, the plate brush seal 2 may be composed of only the plate brush seal 2 or may have a configuration in which the back plate portion 6 and the holding portion 10 are attached to the plate brush seal 2. The back plate portion 6 and the holding portion 10 are auxiliary parts for the plate brush seal 2.
The plate brush seal 2 generally has a laminated structure of a plurality of plate bra seal single plates 3. However, when the pressure of the fluid to be sealed is small due to the seal structure, the single plate bra seal single plate 3 also functions.
[0024]
As shown in FIG. 2, the plate brush seal 2 is formed in an annular body having a predetermined thickness by joining a plurality of ring-shaped plate brush seal single plates 3 in a laminated state. And the inner peripheral side which comprises the annular shape of the plate brush seal single plate 3 is formed in the plate brush portion 3 </ b> A by a row of thin beams inclined in the rotation direction of the rotor 60. Furthermore, the laminated structure of the laminated base portion 3B of the plate brush seal single plate 3 becomes the attachment portion 2A of the plate brush seal 2 by attaching the back plate portion 6 and the like. The mounting portion 2A is integrated by welding or pinning. In the pinning, a pin hole penetrating in the axial direction is provided in the stacked mounting portion 2A, and the pin is driven and fixed.
[0025]
The plate brush portion 3A of the plate brush seal single plate 3 is an annular thin plate having an inner diameter formed in a thin beam shape, and a slit 4B provided in a brush portion 4A having a rectangular or square cross section. It is. The outer peripheral laminated base 3B is configured as a laminated body of the base 4C.
A plate brush seal 2 shown in FIG. 2 is formed by laminating a plurality of plate brush seal single plates 3 shown in FIG. 3 to form an annular body. As shown in FIG. 3, the plate brush seal single plate 3 is formed by annularly connecting plate brush seal divided single plates 4 having an arc shape. The meaning of dividing the plate bra seal single plate 3 into the plate brush seal divided single plate 4 is to improve the yield of material removal from the metal thin plate.
[0026]
The plate brush seal split single plate 4 of FIG. 4 relates to the first embodiment of the present invention. In the plate brush seal split single plate 4 shown in FIG. 4, a concave portion 12A and a convex portion 12B are provided on the split surface 11 of the base portion 4C. The plate brush seal split single plate 4 has brush portions 4A and slits 4B alternately formed on the inner diameter side.
In addition, a positioning hole is provided in the base portion 4C, and both the plate bra seal single plate 3 or the plate bra seal divided single plate 4 that face each other when the plate bra seal single plate 3 or the plate bra seal divided single plate 4 are laminated using the positioning hole. The one brush portion 4A and the other slit 4B can be overlapped by shifting the positioning holes so that the sealed fluid does not leak from each slit 4B.
[0027]
As shown in FIG. 3, the plate brush seal single plate 3 is divided into substantially equal portions along the circumferential direction, and the plate brush seal divided single plate 4 is coupled. The concave portion 12A and the convex portion 11B provided on the dividing surface 11 of the base portion 4C in the plate brush seal split single plate 4 are formed so as to fit into the concave portion 12A and the convex portion 12B facing each other. The concave portion 12A and the convex portion 11B are combined to constitute a pair of engaging portions 12. The plate brush seal split single plate 4 is formed into a flat plate shape as shown in FIG.
[0028]
Next, the manufacturing method of this board brush seal division | segmentation single plate 4 is explained in full detail.
FIG. 5 shows a first embodiment of pattern formation. The shape of the plate brush seal split single plate 4 as shown in FIG. 5 is formed by a resist on a thin metal plate P such as nickel-base alloy, stainless steel, steel plate or the like. It is a thing. This resist cleans the surface of the metal thin plate P having a thickness of 0.005 to 0.5, and then the surface of the metal thin plate P is subjected to screen printing method, dry film / photographic method, liquid resist / photographic method, and a plate bra seal. The pattern is formed in the form of the divided single plate 4. In the present invention, an etching resist is suitable for pattern formation.
[0029]
Next, the pattern surface of the thin metal plate P is finely processed along the resist. Etching is preferred as this fine processing. This etching is performed using techniques such as laser routing, plasma etching, chemical etching, and shot blasting. With respect to the processing accuracy of the plate brush seal split single plate 4, sufficient dimensional accuracy can be guaranteed by the above processing technique.
Further, the positioning hole or the like can be performed by a guide hole, punching, routing, or the like. These precision microfabrication can be performed by currently developed processing techniques such as etching.
[0030]
FIG. 5 shows an example in which an outer shape is cut from a thin metal plate P resisted in the form of a plate brush seal divided single plate 4 by etching to form a large number of plate brush seal divided single plates 4. In the first embodiment, it is possible to cut 35 plate brush seal split single plates 4 from one metal thin plate P, and the yield of the material is improved. This multi-cavity can be obtained by providing a connecting portion 4E on each plate brush seal split single plate 4.
Since the large plate bra seal single plate 3 can be easily manufactured by joining the plate brush seal divided single plates 4, compared with the conventional plate bra seal single plate 3 which can only be taken out from the expensive thin metal plate P. Thus, the material cost of the bra seal split single plate 4 of the present invention can be greatly reduced.
[0031]
FIG. 6 shows an enlarged view of one of the plate brush seal split single plates 4 shown in FIG. The plate brush seal split single plate 4 shown in FIG. 6 is formed in substantially the same manner as the plate brush seal split single plate 4 of FIG. 4 except for the concave portion 12A and the convex portion 12B. A holding plate 7 is integrally provided at the free end portion 5 of the plate brush portion 3A to prevent the brush portion 4A from varying. A second cutting groove 4F1 is provided at the boundary between the pressing plate 7 and the plate brush portion 3A. When the pressing plate 7 is assembled to the plate brush seal 2 using the second cutting groove 4F1, the pressing plate 7 is brushed. To form a plate brush seal split single plate 4 as shown in FIG. For this reason, the plate brush portion 3A is bent in contact with other parts during operation or during storage, and the brush portion 4A is prevented from becoming defective.
[0032]
When this plate brush seal split single plate 4 is cut out from the thin metal plate P by etching, if the plate brush seal split single plate 4 is not fixed and held, the plate brush seal split single plate 4 flutters (changes). The machining dimensional accuracy becomes inaccurate during machining. In particular, the processing accuracy of the plate brush portion 3A becomes poor, which affects the sealing ability of the plate brush portion 3A.
For this purpose, a strip-like connecting portion 4E is formed to connect one portion between the base portion 4C of the plate brush seal split single plate 4 of the present invention and the metal thin plate P without etching. The plate brush seal split single plate 4 is held by the metal thin plate P even during etching by the connecting portion 4E. Therefore, the plate brush seal split single plate 4 does not flutter (fluctuate) during etching, and the processing accuracy is high. Retained. In particular, the size of the plate brush portion 3A made of thin beams can be processed accurately.
[0033]
As shown in FIG. 6, the connecting portion 4E is connected to the base portion 4C by a connecting portion 4E1 that has entered the recess 4C1 of the base portion 4C. The connecting portion 4E is provided at three locations.
The connecting portion 4E1 is formed with a cutting groove 4F that crosses the connecting portion 4E. The cut grooves 4F are arranged at three locations on one straight line. For this reason, when the cutting groove 4F is bent and cut, the stress concentrates on a straight line and can be easily cut from the cutting groove 4F.
[0034]
The width of the cutting groove 4F is smaller than the thickness of the connecting portion 4E. In the technique in which the width of the cutting groove 4F is reduced, the height of the burr caused when the cutting groove 4F of the connecting portion 4E is cut is reduced, and the plate brush seal single plate 3 is brought into contact with the burr. This prevents the accurate lamination from being lost.
The connecting portion 4E can be arbitrarily designed according to the holding strength such as one place, two places, etc. in addition to the first embodiment. By this connecting portion 4E, the plate brush seal split single plate 4 is held by the metal thin plate P even during etching, so that the width dimension of the brush portion 4A, slit 4B and cutting groove 4F can be accurately processed. Become.
[0035]
FIG. 7 is a plan view showing the plate brush seal split single plate 4 according to the second embodiment of the present invention in the same manner as FIG. The state in which the plate brush seal split single plate 4 is etched into the metal thin plate P is the same as in FIG.
In the plate brush seal split single plate 4 of the second embodiment, the holding plate 7 is provided with connecting portions 4E at three locations. The arrangement and shape of the cutting grooves 4F are the same as in FIG. A second cutting groove 4F1 is processed at the boundary between the brush portion 4A and the holding plate 7. The width of the second cutting groove 4F1 is also smaller than the plate thickness. And the control board 7 is cut | disconnected at the required time (for example, at the time of an assembly) after processing into the board brush seal division | segmentation single plate 4. FIG.
When the connecting portion 4E is provided in the holding plate 7, the holding plate 7 is removed from the finished product of the plate brush seal split single plate 4 using the second cutting groove 4F1, and therefore the plate brush seal split single plate 4 is provided. In this case, since the remaining portion of the connecting portion 4E does not remain, it is possible to prevent an assembly failure.
[0036]
FIG. 8 is a plan view obtained by etching the plate brush seal split single plate 4 according to the third embodiment of the present invention. FIG. 8 is a plan view showing a part of the plate brush seal split single plate 4 etched into the thin metal plate P. FIG. The overall configuration of the plate brush seal split single plate 4 disposed on the metal thin plate P is substantially the same as that shown in FIG. However, the plate brush seal split single plate 4 is obtained by processing the shape of the plate brush seal split single plate 4 from the metal thin plate P without providing the holding plate 7.
The cutting groove 4F provided in the connecting portion 4E between the plate brush seal split single plate 4 and the thin metal plate P is arranged on a straight line of the thin metal plate P so that it can be easily cut when bent. However, if it is arranged in the concave portion 4C1, the connecting portion 4E1 does not protrude from the base portion 4C, so there is no problem when assembling into the apparatus.
[0037]
FIG. 9 is a plan view showing a part of an unnecessary portion of the thin metal plate P taken out by cutting the plate brush seal split single plate 4 of FIG. FIG. 10 shows that the thin metal plate P is etched to form the flat brush seal split single plate 4 and the cutting groove 4F of the connecting portion 4E is bent and cut to cut the flat brush seal split single plate 4 into the thin metal plate P. It is the top view taken out from.
In this plate brush seal split single plate 4, the connecting portion 4E1 remains in the base portion 4C, but it does not protrude from the base portion 4C, so there is no problem when assembling.
[0038]
Next, the shape of the plate brush seal split single plate 4 will be supplemented. The cross section of the brush portion 4A of the plate brush seal split single plate 4 is formed in a square shape (rectangle or square). And each width | variety width | variety of the cross-sectional dimension of 4 A of brush parts is 0.5-0.005 * 0.5-0.005mm, Preferably it is 0.20-0.008 * 0.2-0.018mm. In this embodiment, the length is in the range of 5 to 50 mm.
[0039]
The plate brush seal split single plate 4 shown in FIG. 4 is formed into an annular body by an engaging portion 12 in which a concave portion 12A and a convex portion 12B provided on both split surfaces 11 and 11 are engaged.
Or as shown in FIG. 6, it can also form in a toric body by the engaging part which joined the division surfaces 11 and 11, without providing the recessed surfaces 12A and the convex part 12B in the division surfaces 11 and 11. FIG.
[0040]
When the plate brush seal 2 is laminated, the sealing ability can be drastically improved by joining each brush portion 4A and the free end portion 5 side of the slit 4B to each other or meshing with each other by providing a small gap.
Moreover, by using the plate brush seal single plate 3 for the plate brush seal 2, flexibility is exhibited by elastic deformation of the plate brush portion 3A.
[0041]
The laminated thickness in the plate brush seal 2 of each embodiment related to the manufacturing method described above is laminated in the range of 0.5 to 5 mm, and this laminated thickness is determined by the pressure of the fluid to be sealed. is there.
Further, the material of the plate brush seal single plate 3 is steel, stainless steel, nickel-based alloy, ceramic material, or the like.
[0042]
On the other hand, even in the latest processing method, when the slit 4B is processed into a thin plate as in the past, it is impossible to form the slit 4B having a gap size smaller than the thickness of the thin plate. For this reason, since a gap is generated between the brush portions 4A, it is difficult to improve the sealing performance with the plate brush seal 2.
However, the plate brush seal 2 can improve the sealing ability by stacking and combining the plate brush seal single plates 3 of the present invention. In addition, the plate brush portion 3A is composed of only a large number of thin beams, so that it has flexibility so that even if the rotating shaft 60 comes into contact with the brush portion 4A of the plate brush seal 2, the friction is reduced. It is possible to effectively prevent wear caused by the elastic deformation and contact with the rotary shaft 60.
The plate brush seal split single plate 4 is easily formed by various etching processes, and in addition to the above-described processes, fine processes such as wire electric discharge machining and press working.
[0043]
【The invention's effect】
The plate brush seal manufacturing method according to the present invention has the following effects.
In the method for producing a plate brush seal split single plate of the present invention, a large number of plate brush seal single plates can be cut out from one metal thin plate, so that the material yield is improved. For this reason, the effect of drastically reducing the cost of the plate brush seal can be expected.
Further, since processing such as etching is performed in a state in which the metal thin plate and the plate brush seal split single plate are connected via the connecting portion, the plate brush seal split single plate is held by the metal thin plate, and thus has a fine size. Processing becomes possible.
In particular, since the brush part of the plate brush seal split single plate must be formed in a fine thin beam, the fixed processing of this plate brush seal split single plate determines the dimensional accuracy and improves the sealing ability. I can expect.
[0044]
In addition, since the plate brush seal single plate of the present invention is processed by being fixed to the metal thin plate by the connecting portion, it is possible to process a plate brush seal divided single plate having an accurate size even with any thin metal thin plate. .
In addition, since the cutting portion is provided in the connecting portion, the plate brush seal split single plate can be easily cut from the thin metal plate, and the plate brush seal split single plate can be bent when cutting. It can effectively prevent a non-defective product. Furthermore, by arranging the cutting grooves on one straight line, it is possible to easily bend and cut, to effectively prevent the occurrence of defects during cutting, and to prevent the occurrence of defective products.
Furthermore, by setting the depth of the cutting groove, the height of the cut back of the connecting portion is reduced, and problems during assembly are effectively prevented.
[Brief description of the drawings]
FIG. 1 is a half sectional view of a plate brush seal device according to the present invention.
2 is a front view of the axial plate brush seal shown in FIG. 1; FIG.
FIG. 3 is a plan view of the plate brush seal single plate of FIG. 2;
4 is a plan view of a plate brush seal split single plate according to a first embodiment of the plate brush seal single plate of FIG. 3; FIG.
FIG. 5 is a plan view according to the first embodiment of a manufacturing method in which a plate brush seal divided single plate is formed by patterning a large number of plate brush seal divided single plates on a thin metal plate and then etching.
6 is a plan view showing a part of the plate brush seal split single plate of FIG. 5; FIG.
FIG. 7 is a plan view of a sheet brush seal divided veneer according to a second embodiment of the manufacturing method of the present invention, which is processed from a thin metal plate.
FIG. 8 is a plan view of a part of a state in which a plate brush seal split single plate according to a third embodiment of the manufacturing method of the present invention is processed from a thin metal plate.
9 is a plan view of a thin metal plate remaining after processing the plate brush seal split single plate of FIG. 8. FIG.
10 is a plan view of a completed plate brush seal split single plate of the plate brush seal split single plate of FIG. 8. FIG.
FIG. 11 is a half cross-sectional view of a related art brush seal device. FIG. 12 is a perspective view of another brush seal device of related technology.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plate brush seal apparatus 2 Plate brush seal 2A Mounting part 3 Plate brush seal single plate 3A Plate brush part 3B Laminate base 4 Plate brush seal division | segmentation single plate 4A Brush part 4B Slit 4C Base part 4C1 Concave part 4E Connection part 4E1 Connection part 4F Cutting groove 4F1 Second cutting groove 5 Free end portion 6 Back plate portion 7 Holding plate 10 Holding portion 11 Dividing surface 12 Engaging portion 12A Recessed portion 12B Convex portion 20 Fixed portion 50 One part (casing)
51 Step 60 The other part (rotor)
P Metal sheet

Claims (3)

A method of manufacturing a plate brush seal split single plate for a plate brush seal that is attached to the one component between the components that move relative to each other with a gap and seals between the other component. The plate brush seal split single plate and the sheet brush seal split single plate and the thin metal plate after processing the plate brush seal split single plate and the brush base split single plate in which the brush portion is formed and an integral base portion is formed at one end of the brush portion. And connecting the connecting portion to the metal thin plate, and finely processing the outer shape of the registered metal thin plate to cut out the outer shape of the plate brush seal split single plate and the connecting portion from the metal thin plate, and then connecting the connecting portion The plate brush seal split single plate is separated from the metal thin plate by cutting a sheet bra seal split single plate. The connecting part is processed into a shape connected to the base part in the recess of the base part, and a cutting groove crossing the connecting part is processed, and the cutting groove is cut after being processed into the plate brush seal split single plate. 2. The method for manufacturing a plate brush seal split single plate according to claim 1, wherein the plate is separated from the thin metal plate. The resist is an etching resist process, the fine processing is an etching process, and a processing is performed in which a restraining plate is integrally processed at a free end portion of the brush portion and the restraining plate and the metal thin plate are connected by the connecting portion. And processing the cutting groove along the boundary between the pressing plate and the brush portion, and cutting the connecting portion after processing into the plate brush seal split single plate, and then removing the pressing plate from the brush portion. 2. The method for manufacturing a plate brush seal split single plate according to claim 1, wherein cutting is performed along the cutting groove.

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