CN212429027U - Low pressure compressor rim plate seal structure - Google Patents
Low pressure compressor rim plate seal structure Download PDFInfo
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- CN212429027U CN212429027U CN202021197008.9U CN202021197008U CN212429027U CN 212429027 U CN212429027 U CN 212429027U CN 202021197008 U CN202021197008 U CN 202021197008U CN 212429027 U CN212429027 U CN 212429027U
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- wheel disc
- side fixing
- fixing piece
- sealing
- mounting groove
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Abstract
A sealing structure of a wheel disc of a low-pressure compressor belongs to the field of low-pressure compressors. The utility model comprises a first wheel disc, a second wheel disc, a first fixed blade, a second fixed blade, a moving blade, a first left side fixing piece and a second right side fixing piece, wherein the first wheel disc and the second wheel disc are fixedly connected and installed; the sealing member constitutes one-level seal structure with the broach seal structure of first rim plate, and first right side mounting and second rim plate constitute second grade seal structure, and the sealing member constitutes tertiary seal structure with the broach seal structure of second rim plate. The utility model discloses the purpose is single in order to solve current rim plate seal structure, and sealed effect is not good, the difficult problem of dismantling, the utility model discloses simple structure, design benefit are suitable for and use widely.
Description
Technical Field
The utility model relates to a low pressure compressor rim plate seal structure belongs to low pressure compressor field.
Background
At present, there are a large amount of gaps between the low pressure compressor rim plate structure of extensive use, these gaps greatly reduced gas turbine's aerodynamic efficiency, also make the life and the turbine efficiency reduction of rim plate, and current rim plate inner seal structure design is single, sealed effect is not good, can not make the reasonable distribution of rim plate internal pressure, the technique is not mature enough, difficult dismantlement and unit operation adjustment, reduce unit efficiency when influencing unit safety, can't adjust different rim plate inner chamber pressure effect rationally, to low pressure compressor, at present, there is not the patent application to rim plate inner chamber seal structure design yet.
Therefore, a sealing structure of a wheel disc of a low-pressure compressor is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the research and development purpose is single in order to solve the seal structure that current rim plate seal structure exists, and sealed effect is poor, and difficult dismantlement and unit operation adjustment reduce the problem of unit efficiency when influencing unit safety, have given about in the following the utility model discloses a brief summary to about provide the utility model discloses a basic understanding of some aspects. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
The technical scheme of the utility model:
the utility model provides a low pressure compressor rim plate seal structure which characterized in that: the device comprises a first wheel disc, a second wheel disc, first stationary blades, second stationary blades, moving blades, a first left side fixing piece, a first right side fixing piece, a second left side fixing piece and a second right side fixing piece, wherein the first stationary blades, the moving blades and the second stationary blades are sequentially distributed along the air inlet side to the air outlet side;
the sealing piece and the comb tooth sealing structure on the first wheel disc form a primary sealing structure, the first right side fixing piece and the second wheel disc form a secondary sealing structure, and the sealing piece and the comb tooth sealing structure on the second wheel disc form a tertiary sealing structure.
Preferably: a first sealing installation bulge is formed in the first stationary blade, a first sealing installation groove and a second sealing installation groove are formed in the tops of the first left side fixing piece and the second left side fixing piece, and the first sealing installation bulge on the first stationary blade is installed in the first sealing installation groove and the second sealing installation groove.
Preferably: and a second seal mounting bulge is processed on the second stationary blade, a third seal mounting groove and a fourth seal mounting groove are processed at the tops of the second left side fixing piece and the second right side fixing piece, and the second seal mounting bulge on the second stationary blade is mounted in the third seal mounting groove and the fourth seal mounting groove.
Preferably: and a second wheel disc mounting bulge is processed on the movable blade, a second wheel disc mounting groove is processed on the second wheel disc, and the second wheel disc mounting bulge on the movable blade is mounted in the second wheel disc mounting groove on the second wheel disc.
Preferably: and a first sealing bulge is processed on the right side of the second left side fixing piece, a second sealing bulge is processed on the left side of the second wheel disc, and a secondary sealing structure is formed between the first sealing bulge and the second sealing bulge.
Preferably: the first and second discs are mounted in position by a welded connection.
Preferably: the first and second discs are mounted in position by a welded connection.
The utility model discloses following beneficial effect has:
1. the wheel disc sealing structure of the low-pressure compressor has simple structure, convenient assembly and disassembly and good sealing effect;
2. the wheel disc sealing structure of the low-pressure compressor can be adjusted according to the conditions when the wheel disc runs after the wheel disc sealing structure is installed, and the wheel disc sealing structure is more flexible to use, adjust and install;
3. the wheel disc sealing structure of the low-pressure compressor of the utility model forms the wheel disc sealing structure through the sealing fixing piece, thereby being convenient for adjusting the sealing clearance, and reducing the leakage amount while balancing the pressure of the front and the rear cavities of the wheel disc;
4. the utility model discloses a low pressure compressor rim plate seal structure, design benefit, easy dismounting, equipment are firm, are suitable for using widely.
Drawings
FIG. 1 is a schematic structural view of a low pressure compressor disk seal structure;
FIG. 2 is a schematic view of the structure of a first left side fixing member and a first right side fixing member;
FIG. 3 is a schematic illustration of a portion of the structure of the second wheel disc;
in the figure, 1-a first wheel disc, 2-a second wheel disc, 3-a first stationary blade, 4-a second stationary blade, 5-a moving blade, 6-1-a first left side fixing member, 6-2-a first right side fixing member, 6-3-a second left side fixing member, 6-4-a second right side fixing member, 7-a second stage sealing structure, 8-a first stage sealing structure, 9-a third stage sealing structure, 10-a welding position, 11-a comb tooth sealing structure, 31-a first seal mounting projection, 41-a second seal mounting projection, 22-a second wheel disc mounting groove, 23-a second seal projection, 51-a second wheel disc mounting projection, 61-a sealing member, 621-a first seal mounting groove, 622-a second seal mounting groove, 623-third seal mounting groove, 624-fourth seal mounting groove, 63-first seal projection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The utility model discloses the connection that mentions divide into fixed connection and can dismantle the connection, fixed connection is for the conventional fixed connection mode such as undetachable connection including but not limited to hem connection, rivet connection, adhesive connection and welded connection, can dismantle the connection including but not limited to conventional dismantlement modes such as threaded connection, buckle connection, pin joint and hinged joint, when not clearly prescribing a limit to concrete connection mode, acquiesces to always can find at least one kind of connected mode in current connected mode and can realize this function, and the technical staff in the art can select by oneself as required. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and a low-pressure compressor wheel disc sealing structure of the present embodiment includes a first wheel disc 1, a second wheel disc 2, a first stationary blade 3, a second stationary blade 4, a moving blade 5, a first left side fixing member 6-1, a first right side fixing member 6-2, a second left side fixing member 6-3, and a second right side fixing member 6-4, wherein the first stationary blade 3, the moving blade 5, and the second stationary blade 4 are sequentially arranged along an air inlet side toward an air outlet side, the first wheel disc 1 and the second wheel disc 2 are fixedly connected, the first left side fixing member 6-1 and the first right side fixing member 6-2 are fixedly installed at the bottom of the first stationary blade 3 by bolts, the second left side fixing member 6-3 and the second right side fixing member 6-4 are fixedly installed at the bottom of the second stationary blade 4 by bolts, the moving blade 5 is fixedly arranged on the second wheel disc 2, the bottoms of the first left side fixing piece 6-1 and the second left side fixing piece 6-3 are provided with sealing pieces 61, comb tooth sealing structures 11 are processed on the first wheel disc 1 and the second wheel disc 2, the comb tooth sealing structures 11 play a sealing role, and the first left side fixing piece 6-1, the first right side fixing piece 6-2, the second left side fixing piece 6-3 and the second right side fixing piece 6-4 are convenient to disassemble and adjust the gap value;
the sealing element 61 and the comb tooth sealing structure 11 on the first wheel disc 1 form a primary sealing structure 8, the first right side fixing element 6-2 and the second wheel disc 2 form a secondary sealing structure 7, the sealing element 61 and the comb tooth sealing structure 11 on the second wheel disc 2 form a tertiary sealing structure 9, and the sealing element 61 plays a role in sealing reinforcement;
air enters from the air inlet side, successively passes through the first-stage sealing structure 8, the second-stage sealing structure 7 and the third-stage sealing structure 9, is discharged from the air outlet side, and is reasonably designed through the wheel disc sealing structures of the first-stage sealing structure 8, the second-stage sealing structure 7 and the third-stage sealing structure 9, so that the internal high pressure is reduced, the sealing effect of the unit is improved, the pneumatic efficiency is improved, the first wheel disc 1 and the second wheel disc 2 and the first-stage sealing structure 8 are reasonably arranged, the gap value between the second-stage sealing structure 7 and the third-stage sealing structure 9 can effectively reduce the gas leakage.
The second embodiment is as follows: with reference to fig. 1 to 3, the first stationary blade 3 is provided with a first seal mounting protrusion 31, the tops of the first left side fixing piece 6-1 and the second left side fixing piece 6-3 are provided with a first seal mounting groove 621 and a second seal mounting groove 622, and the first seal mounting protrusion 31 on the first stationary blade 3 is mounted in the first seal mounting groove 621 and the second seal mounting groove 622; the second stationary blade 4 is provided with a second seal mounting protrusion 41, the tops of the second left side fixing piece 6-3 and the second right side fixing piece 6-4 are provided with a third seal mounting groove 623 and a fourth seal mounting groove 624, the second seal mounting protrusion 41 on the second stationary blade 4 is mounted in the third seal mounting groove 623 and the fourth seal mounting groove 624, and the first seal mounting protrusion 31, the second seal mounting protrusion 41, the first seal mounting groove 621, the second seal mounting groove 622, the third seal mounting groove 623 and the fourth seal mounting groove 624 play a role of facilitating positioning and mounting.
The third concrete implementation mode: in the present embodiment, referring to fig. 1 to fig. 3, a second disk mounting protrusion 51 is formed on the moving blade 5, a second disk mounting groove 22 is formed on the second disk 2, the second disk mounting protrusion 51 on the moving blade 5 is mounted in the second disk mounting groove 22 on the second disk 2, and the second disk mounting protrusion 51 and the second disk mounting groove 22 are used for facilitating positioning and mounting.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to fig. 3, and the second left fixing piece 6-3 is provided with a first sealing protrusion 63 on the right side, the second wheel disc 2 is provided with a second sealing protrusion 23 on the left side, and a secondary sealing structure 7 is formed between the first sealing protrusion 63 and the second sealing protrusion 23, so that the gap value of the sealing channel 7 can be reasonably set, the gas leakage to the low-pressure area can be effectively reduced, and the pneumatic efficiency can be ensured.
The fifth concrete implementation mode: the first wheel disc 1 and the second wheel disc 2 are installed at the welding position 3 through welding connection, so that the sealing structure 8 can effectively avoid the welding position, and the structure is easy to design and implement.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (6)
1. The utility model provides a low pressure compressor rim plate seal structure which characterized in that: comprises a first wheel disc (1), a second wheel disc (2), a first stationary blade (3), a second stationary blade (4), a moving blade (5), a first left side fixing piece (6-1), a first right side fixing piece (6-2), a second left side fixing piece (6-3) and a second right side fixing piece (6-4), wherein the first stationary blade (3), the moving blade (5) and the second stationary blade (4) are sequentially arranged along the air inlet side to the air outlet side, the first wheel disc (1) and the second wheel disc (2) are fixedly connected and installed, the first left side fixing piece (6-1) and the first right side fixing piece (6-2) are respectively installed at the bottom of the first stationary blade (3), the second left side fixing piece (6-3) and the second right side fixing piece (6-4) are respectively installed at the bottom of the second stationary blade (4), and the moving blade (5) is fixedly installed on the second wheel disc (2), sealing elements (61) are arranged at the bottoms of the first left side fixing piece (6-1) and the second left side fixing piece (6-3), and comb tooth sealing structures (11) are processed on the first wheel disc (1) and the second wheel disc (2);
the sealing element (61) and the comb tooth sealing structure (11) on the first wheel disc (1) form a primary sealing structure (8), the first right side fixing element (6-2) and the second wheel disc (2) form a secondary sealing structure (7), and the sealing element (61) and the comb tooth sealing structure (11) on the second wheel disc (2) form a tertiary sealing structure (9).
2. The low pressure compressor disk seal structure of claim 1, wherein: a first seal mounting protrusion (31) is machined on the first stationary blade (3), a first seal mounting groove (621) and a second seal mounting groove (622) are machined at the tops of the first left side fixing piece (6-1) and the second left side fixing piece (6-3), and the first seal mounting protrusion (31) on the first stationary blade (3) is mounted in the first seal mounting groove (621) and the second seal mounting groove (622).
3. The low pressure compressor disk seal structure of claim 1, wherein: and a second seal mounting protrusion (41) is processed on the second stationary blade (4), a third seal mounting groove (623) and a fourth seal mounting groove (624) are processed at the tops of the second left side fixing piece (6-3) and the second right side fixing piece (6-4), and the second seal mounting protrusion (41) on the second stationary blade (4) is mounted in the third seal mounting groove (623) and the fourth seal mounting groove (624).
4. The low pressure compressor disk seal structure of claim 1, wherein: and a second wheel disc mounting protrusion (51) is processed on the moving blade (5), a second wheel disc mounting groove (22) is processed on the second wheel disc (2), and the second wheel disc mounting protrusion (51) on the moving blade (5) is mounted in the second wheel disc mounting groove (22) on the second wheel disc (2).
5. The low pressure compressor disk seal arrangement of claim 2, wherein: and a first sealing bulge (63) is processed on the right side of the second left fixing piece (6-3), a second sealing bulge (23) is processed on the left side of the second wheel disc (2), and a secondary sealing structure (7) is formed between the first sealing bulge (63) and the second sealing bulge (23).
6. The low pressure compressor disk seal structure of claim 1, wherein: the first wheel disc (1) and the second wheel disc (2) are installed at a welding position (10) through welding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021197008.9U CN212429027U (en) | 2020-06-24 | 2020-06-24 | Low pressure compressor rim plate seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021197008.9U CN212429027U (en) | 2020-06-24 | 2020-06-24 | Low pressure compressor rim plate seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429027U true CN212429027U (en) | 2021-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021197008.9U Active CN212429027U (en) | 2020-06-24 | 2020-06-24 | Low pressure compressor rim plate seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429027U (en) |
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2020
- 2020-06-24 CN CN202021197008.9U patent/CN212429027U/en active Active
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