CN220153806U - Dynamic balance high-precision gas bearing of hydrogen energy gas turbine rotor - Google Patents
Dynamic balance high-precision gas bearing of hydrogen energy gas turbine rotor Download PDFInfo
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- CN220153806U CN220153806U CN202321384933.6U CN202321384933U CN220153806U CN 220153806 U CN220153806 U CN 220153806U CN 202321384933 U CN202321384933 U CN 202321384933U CN 220153806 U CN220153806 U CN 220153806U
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- gas
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- bearing
- air
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000001257 hydrogen Substances 0.000 title claims abstract description 18
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 title claims description 118
- 238000007664 blowing Methods 0.000 claims abstract description 59
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to the field of dynamic balance detection devices of air wheel rotors, and discloses a high-precision dynamic balance air bearing of a hydrogen energy air wheel rotor, which comprises a bearing main body, wherein a radial bearing for inserting the air wheel rotor is arranged on the bearing main body, and the high-precision dynamic balance air bearing is characterized in that: radial air holes are formed in the radial bearing, a plurality of radial air blowing ports communicated with the radial air holes are formed in the side wall of the radial bearing, the radial air blowing ports blow air to the inner wall of the rotor of the air compressing wheel, a plurality of axial air blowing ports are formed in the bearing main body, the axial air blowing ports blow air to the bottom of the rotor of the air compressing wheel, and a radial air passage communicated with the radial air holes and an axial air passage communicated with the axial air blowing ports are formed in the bearing main body. The utility model has the effects of better reducing the friction force between the rotor of the air compressing wheel and the detection device and improving the dynamic balance precision of the rotor of the air compressing wheel.
Description
Technical Field
The utility model relates to the field of dynamic balance detection devices of air compressing wheel rotors, in particular to a high-precision air bearing for dynamic balance of a hydrogen energy air compressing wheel rotor.
Background
At present, when the dynamic balance detection device for the air-compressing wheel rotor is used for testing, the air-compressing wheel rotor needs to be placed on the detection device for detection, and after the air-compressing wheel rotor reaches the detection speed, the air-compressing wheel rotor can be accurately detected, and in order to better detect the air-compressing wheel rotor, the friction between the air-compressing wheel rotor and the detection device is reduced, so that the air-compressing wheel rotor can be accurately detected.
In the related art, the gas bearing of the gas turbine rotor comprises a fixed seat, wherein a plug-in column for plugging the gas turbine rotor is arranged on the fixed seat, a gas blowing hole is formed in the plug-in column, a plurality of gas blowing holes for blowing the inner wall of the gas turbine rotor are formed in the plug-in column along the radial direction of the plug-in column, the gas blowing holes are communicated with the gas blowing hole, and when the gas turbine rotor rotates, the gas blowing holes are simultaneously used for blowing out pressure gas, so that a gas film is formed between the inner wall of the gas turbine rotor and the plug-in column, and the resistance of the gas turbine rotor during rotation is reduced, so that the gas turbine rotor can rotate more stably.
In the related art, the air blowing port is only formed in the side wall of the plug-in column to achieve the effect of generating an air film, when the pressure of high-pressure air is enough, the air can be discharged in two directions, one is discharged from the top of the contact position between the plug-in column and the inner wall of the air compressing wheel rotor, and the other is discharged from the contact position between the air compressing wheel rotor and the bottom of the fixing seat, but by adopting the design, the discharging direction of the air cannot be well controlled, the air compressing wheel rotor and the upper side of the fixing seat are possibly caused, and the detection accuracy of the air compressing wheel rotor is influenced, so that improvement is needed.
Disclosure of Invention
In order to better reduce the friction force between the air compressing wheel rotor and the detection device and improve the dynamic balance precision of the air compressing wheel rotor, the utility model provides the high-precision air bearing for dynamic balance of the hydrogen energy air compressing wheel rotor.
The utility model provides a dynamic balance high-precision gas bearing of a hydrogen energy gas turbine rotor, which adopts the following technical scheme: the utility model provides a hydrogen energy gas turbine rotor dynamic balance high accuracy gas bearing, includes the bearing main part, be provided with the radial bearing that is used for grafting gas turbine rotor on the bearing main part, its characterized in that: the radial bearing is internally provided with radial air holes, the outer circle of the radial bearing is provided with a plurality of radial air blowing ports communicated with the radial air holes, the radial air blowing ports blow air to the inner wall of the air compressing wheel rotor, the bearing main body is provided with a plurality of axial air blowing ports, the axial air blowing ports blow air to the bottom of the air compressing wheel rotor, and the bearing main body is internally provided with radial air passages communicated with the radial air holes and axial air passages communicated with the axial air blowing ports.
Through adopting above-mentioned technical scheme, during the use, place the gas turbine rotor on the bearing main part, when the gas turbine rotor rotates, make radial gas port blow to gas turbine rotor inner wall simultaneously, thereby reduce the frictional force between gas turbine rotor and the radial bearing, and make axial gas port blow the gas turbine rotor upwards, thereby can reduce the frictional force between gas turbine and the bearing main part, adopt such design, can significantly reduce the contact between gas turbine rotor and bearing main part and the radial bearing, thereby can reduce the frictional force better and exert an influence on the detection of gas turbine rotor, improve and detect gas turbine rotor dynamic balance precision, and adopt axial air flue and radial air flue to blow to axial gas port and radial gas port respectively, thereby can adjust the pressure of axial gas port and radial gas port blow according to the size and the weight of gas turbine rotor, thereby can be better reduce the contact between gas turbine rotor and the bearing main part and the radial bearing, improve the convenience of using the gas bearing.
Preferably, the bearing main body comprises a fixed seat, a replacement seat is detachably connected to the fixed seat, a gas seat is detachably connected to the replacement seat, and the radial bearing is detachably connected to the gas seat.
Through adopting above-mentioned technical scheme, fix the fixing base when using, when need changing the gas seat, can dismantle the seat of changing to can change the gas seat more conveniently, improve the convenience of using the gas seat.
Preferably, the replacing seat is provided with a plurality of countersunk holes, the countersunk holes are inserted with mounting bolts, the mounting bolts are connected to the fixing seat in a threaded fit manner, the replacing seat is also provided with a plurality of through holes, the through holes are communicated with the countersunk holes, and the through holes are used for penetrating the mounting bolts.
Through adopting above-mentioned technical scheme, mounting bolt is penetrated by the through-hole, and the seat is changed in the slip again to make mounting bolt slide into the countersunk head downthehole, thereby realize changing the locking of seat, improve the installation and dismantle the convenience of changing the seat.
Preferably, a positioning groove is formed in one side, close to the replacement seat, of the fixing seat, a positioning block is arranged in the positioning groove, a positioning sliding groove is formed in one side, close to the fixing seat, of the replacement seat, and the positioning sliding groove is in plug-in fit with the positioning block.
Through adopting above-mentioned technical scheme, the locating piece can restrict the position of changing seat and fixing base, improves the stability of being connected between seat and the fixing base.
Preferably, the radial air flue comprises a plug hole formed in the upper side of the replacement seat, a plug ring matched with the plug hole in a plug manner is formed in the bottom of the air seat, a first radial hole used for communicating the plug hole is formed in the replacement seat, and a second radial hole used for communicating the first radial hole is formed in the fixing seat. Preferably, the axial air passage comprises a plurality of first axial holes formed in the base of the air seat, the first axial holes are formed in one-to-one correspondence with the axial air blowing ports and are communicated with each other in the axial direction, a second communication ring is formed in the upper side of the replacement seat and is communicated with the first axial holes, a second axial hole communicated with the first communication ring is formed in the replacement seat, and a third axial hole communicated with the second axial hole is formed in the fixing seat.
By adopting the technical scheme, the gas can be more uniformly injected into the positions of the plurality of axial gas blowing ports, and the stability of the rotor of the air compressing wheel during rotation is improved.
Preferably, the first axial bore inner diameter is smaller than the axial blow port inner diameter.
By adopting the technical scheme, the inner diameter of the axial air blowing port is reasonably designed, the pressure blown out by the axial air blowing port can be increased, and the stability of using the axial air blowing port to blow the rotor of the air compressing wheel is improved.
Preferably, the radial bearing is integrally formed on the gas seat, and a buffer gas ring is arranged at the joint of the radial bearing and the gas seat.
By adopting the technical scheme, the air blown out by the radial air blowing port and the air blown out by the axial air blowing port are converged at the buffer air ring, the interference stirring of the air flows generated in two directions can be reduced through the buffer air ring, the influence on the rotor of the air compressing wheel is reduced, the rotating stability of the rotor of the air compressing wheel is improved, and the dynamic balance precision of the rotor of the air compressing wheel is detected.
Preferably, the side wall of the gas seat is provided with a plurality of exhaust holes communicated with the buffer gas ring.
By adopting the technical scheme, the air blown out by the radial air blowing port and the air blown out by the axial air blowing port can be discharged from the exhaust hole, so that the air blown out by the radial air blowing port and the air blown out by the axial air blowing port can flow more smoothly, and the effect of using the air bearing is improved.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the radial air blowing port blows to the inner wall of the air compressing wheel, so that the friction force between the air compressing wheel and the radial bearing is reduced, the axial air blowing port blows the air compressing wheel upwards, so that the friction force between the air compressing wheel and the bearing main body can be reduced, the contact between the air compressing wheel and the bearing main body and the radial bearing can be greatly reduced, the influence of the friction force on the detection of the air compressing wheel can be better reduced, the dynamic balance precision of the air compressing wheel is improved, the axial air passage and the radial air passage are adopted to blow to the axial air blowing port and the radial air blowing port respectively, so that the pressure of the air blown by the axial air blowing port and the radial air blowing port can be adjusted according to the size and the weight of the air compressing wheel, the contact between the air compressing wheel and the bearing main body and the radial bearing can be better reduced, and the capability and convenience of using the air bearing for adapting to various products are improved;
2. when the gas seat is needed to be replaced, the replacement seat can be detached, so that the gas seat can be replaced more conveniently, and the convenience of using the gas seat is improved;
3. the air blown out from the radial air blowing port and the air blown out from the axial air blowing port are converged at the buffer air ring, interference fluctuation generated by air flows in two directions can be reduced through the buffer air ring, the influence on the air compressing wheel rotor is reduced, the rotation stability of the air compressing wheel rotor is improved, and the effect of detecting the air compressing wheel rotor is improved;
4. the air blown out by the radial air blowing port and the air blown out by the axial air blowing port are discharged from the exhaust hole, so that the air blown out by the radial air blowing port and the air blown out by the axial air blowing port can flow more smoothly, and the effect of using the air bearing is improved.
Drawings
Fig. 1 is a sectional view of a dynamic balance high-precision gas bearing of a hydrogen energy source gas turbine rotor according to embodiment 1 of the present utility model.
Fig. 2 is a sectional view showing a mounting bolt in a highlighted manner in embodiment 1 of the present utility model.
Fig. 3 is a cross-sectional view showing a positioning block in a highlighting manner according to embodiment 1 of the present utility model.
Fig. 4 is an enlarged schematic view of the portion a in fig. 1.
Fig. 5 is a cross-sectional view showing the vent hole in a highlighted manner in embodiment 2 of the present utility model.
Reference numerals: 1. a radial bearing; 2. radial air blowing ports; 3. radial air holes; 4. a gas turbine rotor; 5. an axial air blowing port; 6. a bearing body; 61. a gas seat; 62. replacing the seat; 63. a fixing seat; 8. a second radial bore; 10. a countersunk hole; 11. installing a bolt; 12. a through hole; 13. a positioning groove; 14. a fixing bolt; 15. a positioning block; 16. positioning a chute; 17. a second axial hole; 18. a third axial hole; 19. a buffer gas ring; 20. a first axial bore; 21. a second communication ring; 22. a plug ring; 23. a plug hole; 24. a first radial bore; 25. and an exhaust hole.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-5.
The embodiment of the utility model discloses a dynamic balance high-precision gas bearing of a rotor of a hydrogen energy gas turbine.
Example 1:
referring to fig. 1 and 2, a dynamic balance gas bearing for a gas turbine comprises a bearing main body 6, wherein a radial bearing 1 for inserting the gas turbine 4 is integrally formed on the bearing main body 6, and the inner diameter of the radial bearing 1 is gradually reduced along the direction away from the bearing main body 6. Radial air holes 3 are formed in the radial bearing 1, a plurality of radial air blowing ports 2 communicated with the radial air holes 3 are formed in the side wall of the radial bearing 1, the radial air blowing ports 2 are formed in a radial direction, and the radial air blowing ports 2 blow air to the inner wall of the air compressing wheel 4, so that an air film can be formed between the air compressing wheel 4 and the positioning column 1, and the friction force between the positioning column 1 and the air compressing wheel 4 can be reduced. The bearing main body 6 is provided with a plurality of axial air blowing ports 5, the axial air blowing ports 5 are arranged along the axial direction of the bearing 1, the axial air blowing ports 5 blow air to the bottom of the air compressing wheel 4, and the bearing main body 6 is internally provided with a radial air passage used for communicating the radial air holes 3 and an axial air passage used for communicating the axial air blowing ports 5. The pressure of blowing can be controlled through the radial air passage and the axial air passage respectively, so that the size and the weight of the air compressing wheel 4 can be better adjusted, and the rotating fluency of the air compressing wheel 4 can be better ensured.
Referring to fig. 3 and 4, the bearing main body 6 includes a fixing seat 63, a replacement seat 62 and a gas seat 61, two countersunk holes 10 are formed in the replacement seat 62, a mounting bolt 11 is inserted into the countersunk holes 10, the mounting bolt 11 penetrates through the countersunk holes 10 and is connected to the fixing seat 63 in a threaded fit manner, two through holes 12 are formed in the replacement seat 62, the through holes 12 are arranged adjacent to the countersunk holes 10, the through holes 12 are communicated with the countersunk holes 10, the through holes 12 are formed in the bottom of the countersunk holes 10, the replacement seat 62 is fixed through the mounting bolt 11, and convenience in mounting and dismounting the replacement seat 62 is improved. The gas seat 61 is bolted to the upper side of the replacement seat 62, and the radial bearing 1 is integrally formed on the gas seat 61. The connection between the radial bearing 1 and the gas seat 61 is provided with a buffer gas ring 19.
The positioning groove 13 is formed in one side, close to the replacement seat 62, of the fixing seat 63, the positioning block 15 is inserted into the positioning groove 13, the fixing bolt 14 is inserted into the fixing seat 63, and the fixing bolt 14 is connected to the positioning block 15 in a threaded fit mode, so that the positioning block 15 is locked, and the stability of the positioning block 15 is improved. The side of the replacing seat 62, which is close to the fixing seat 63, is provided with the positioning chute 16, the positioning chute 16 is in plug-in fit with the positioning block 15, and the positioning block 15 can better strengthen the firmness between the replacing seat 62 and the fixing seat 63.
The radial air passage comprises a plug hole 23 arranged on the upper side of a replacement seat 62, a plug ring 22 which is in plug fit with the plug hole 23 is arranged at the bottom of a gas seat 61, a first radial hole 24 which is used for communicating the plug hole 23 is arranged in the replacement seat 62, and a second radial hole 8 which is used for communicating the first radial hole 24 is arranged in a fixed seat 63. Through the design, the air injection of the radial air blowing port 2 can be more conveniently carried out, and the convenience of using the radial air passage is improved.
The axial air passage comprises a plurality of first axial holes 20 formed in the bottom of the air seat 61, the plurality of first axial holes 20 are in one-to-one correspondence with the plurality of axial air blowing ports 5 and are communicated with each other, and the inner diameter of each first axial hole 20 is smaller than the inner diameter of each axial air blowing port 5. The upper side of the replacing seat 62 is provided with a second communicating ring 21, the second communicating ring 21 is communicated with the plurality of first axial holes 20, the replacing seat 62 is internally provided with a second axial hole 17 communicated with the second communicating ring 21, and the fixing seat 63 is internally provided with a third axial hole 18 communicated with the second axial hole 17. The second communication ring 21 can more uniformly inject the gas into the axial blowholes, thereby improving the stability of the rotor 4 during rotation.
The diameter d of the radial blow hole 2 j Is calculated according to the formula: d, d j ＝3.6×10 2 ×h 0 3/2 Wherein: h is a 0 A gap between the outer circle of the radial bearing 1 and the inner hole of the air compressing wheel 4; taking h 0 ＝1.5×10 -3 cm; the gas bearing test structure manufactured according to the calculation result is as follows: d, d j ＝3.6×10 2 ×(1.5×10 -3 ) 3/2 =0.02 cm, the outer diameter of the air compressing wheel 4 is 7cm, the inner hole is 1.6cm, and the rotating speed of the air compressing wheel 4 is 3500 rpm; the minimum unbalance (eccentricity) of the air wheel 4 is less than 0.0001cm.
The implementation principle of the embodiment 1 is as follows: when the air compressing wheel rotor 4 is used, the air compressing wheel rotor 4 is placed on the bearing main body 6, when the air compressing wheel rotor 4 rotates, the radial air blowing port 2 and the axial air blowing port 5 are simultaneously used for blowing air, so that an air film is formed between the air compressing wheel rotor 4 and the radial bearing 1 as well as between the air compressing wheel rotor 4 and the air compressing seat 61, friction force between the air compressing wheel rotor 4 and the radial bearing 1 as well as between the air compressing wheel rotor and the air compressing seat 61 is greatly reduced, and accuracy of detecting the air compressing wheel rotor 4 is improved.
Example 2:
referring to fig. 5, a high-precision gas bearing for dynamic balance of a hydrogen-powered air wheel rotor is different from embodiment 1 in that a plurality of gas vents 25 communicating with a buffer gas ring 19 are provided on the side wall of a gas seat 61.
The implementation principle of the embodiment 2 is as follows: unlike embodiment 1, the gas in the buffer gas ring 19 is discharged through the exhaust hole 25 at the exhaust hole 25, so that the gas can flow more smoothly, and the smoothness of the rotation of the air wheel rotor 4 is improved.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (9)
1. The utility model provides a hydrogen energy gas turbine rotor dynamic balance high accuracy gas bearing, includes bearing main part (6), be provided with radial bearing (1) that are used for grafting gas turbine rotor (4) on bearing main part (6), its characterized in that: radial gas pocket (3) have been seted up in radial bearing (1), radial bearing (1) excircle set up a plurality of with radial gas pocket (2) that radial gas pocket (3) are linked together, radial gas pocket (2) blow to the inner wall of wheel rotor (4) that press, a plurality of axial gas pockets (5) have been seted up on bearing main part (6), axial gas pocket (5) blow to wheel rotor (4) bottom that press, set up in bearing main part (6) be used for the radial air flue of intercommunication radial gas pocket (3) with be used for the axial air flue of intercommunication axial gas pocket (5).
2. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 1, wherein the high-precision gas bearing is characterized in that: the bearing main body (6) comprises a fixed seat (63), a replacement seat (62) is detachably connected to the fixed seat (63), a gas seat (61) is detachably connected to the replacement seat (62), and the radial bearing (1) is detachably connected to the gas seat (61).
3. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 2, wherein: a plurality of counter sunk holes (10) are formed in the replacement seat (62), mounting bolts (11) are inserted into the counter sunk holes (10), the mounting bolts (11) are connected to the fixing seat (63) in a threaded fit mode, a plurality of through holes (12) are formed in the replacement seat (62), the through holes (12) are communicated with the counter sunk holes (10), and the through holes (12) are used for penetrating the mounting bolts (11).
4. A hydrogen energy source gas turbine rotor dynamic balance high precision gas bearing according to claim 3, characterized in that: the fixing seat (63) is close to one side of the replacing seat (62) and is provided with a positioning groove (13), a positioning block (15) is arranged in the positioning groove (13), one side of the replacing seat (62) close to the fixing seat (63) is provided with a positioning sliding groove (16), and the positioning sliding groove (16) is in plug-in fit with the positioning block (15).
5. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 2, wherein: the radial air flue comprises a plug hole (23) formed in the upper side of a replacement seat (62), a plug ring (22) which is in plug fit with the plug hole (23) is formed in the bottom of the air seat (61), a first radial hole (24) which is used for communicating the plug hole (23) is formed in the replacement seat (62), and a second radial hole (8) which is used for communicating the first radial hole (24) is formed in the fixing seat (63).
6. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 2, wherein: the axial air flue is including seting up in a plurality of first axial holes (20) of gas seat (61) base, a plurality of first axial hole (20) and a plurality of axial blowing mouth (5) one-to-one and to the intercommunication seting up, second intercommunication ring (21) have been seted up to change seat (62) upside, second intercommunication ring (21) are linked together with a plurality of first axial hole (20), change still set up in seat (62) with second axial hole (17) that first intercommunication ring is linked together, set up in fixing base (63) with third axial hole (18) that second axial hole (17) are linked together.
7. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 6, wherein: the inner diameter of the first axial hole (20) is smaller than that of the axial blowing port (5).
8. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 2, wherein: the radial bearing (1) is integrally formed on the gas seat (61), and a buffer gas ring (19) is arranged at the joint of the radial bearing (1) and the gas seat (61).
9. The high-precision gas bearing for dynamic balance of a hydrogen energy gas turbine rotor according to claim 8, wherein: the side wall of the gas seat (61) is provided with a plurality of exhaust holes (25) communicated with the buffer gas ring (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321384933.6U CN220153806U (en) | 2023-06-01 | 2023-06-01 | Dynamic balance high-precision gas bearing of hydrogen energy gas turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321384933.6U CN220153806U (en) | 2023-06-01 | 2023-06-01 | Dynamic balance high-precision gas bearing of hydrogen energy gas turbine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220153806U true CN220153806U (en) | 2023-12-08 |
Family
ID=89014826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321384933.6U Active CN220153806U (en) | 2023-06-01 | 2023-06-01 | Dynamic balance high-precision gas bearing of hydrogen energy gas turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220153806U (en) |
-
2023
- 2023-06-01 CN CN202321384933.6U patent/CN220153806U/en active Active
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