CN220319680U - Rotary machinery wheel-aligning shield capable of breaking internal vacuum - Google Patents
Rotary machinery wheel-aligning shield capable of breaking internal vacuum Download PDFInfo
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- CN220319680U CN220319680U CN202321619257.6U CN202321619257U CN220319680U CN 220319680 U CN220319680 U CN 220319680U CN 202321619257 U CN202321619257 U CN 202321619257U CN 220319680 U CN220319680 U CN 220319680U
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- flange
- wheel
- ring
- internal vacuum
- breaking
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 14
- 239000007789 gas Substances 0.000 description 17
- 239000003921 oil Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to the technical field of sealing of gear boxes or bearing boxes, in particular to a rotary mechanical wheel pair protecting cover capable of breaking internal vacuum, which comprises a flange I, a flange II, a spigot ring and a connecting ring, wherein the flange I is connected with the flange II through the connecting ring, the spigot ring is connected to the outer side surface of the flange I, the outer diameter of the spigot ring is matched with an opening on a rotor housing of a coal press, the flange II is connected with a driving side bearing seat of the gear box through a screw, and the rotary mechanical wheel pair protecting cover is characterized in that pressure regulating holes are formed in the flange I and/or the connecting ring, and a protruding ring table is arranged at the outer side of the connecting hole corresponding to the screw at the outer side of the flange II. The utility model has the advantages that: the wheel-pair shield of the gas-steam combined cycle generator set is improved in structure, the internal vacuum of the wheel-pair shield is quickly destroyed, the problem of oil leakage caused by failure of sealing of a gear box due to the internal vacuum of the wheel-pair shield is solved, and safe operation of the gas-steam combined cycle generator set is ensured.
Description
Technical Field
The utility model relates to the technical field of sealing of gear boxes or bearing boxes, in particular to a rotating machinery wheel-aligning shield capable of breaking internal vacuum.
Background
The CCPP project in iron and steel industry, also called gas-steam combined cycle generator set, is mainly characterized by that firstly, the natural gas or other combustible gas is pressurized by means of gas compressor, and mixed with air fed into combustion chamber to produce high-temperature high-pressure gas, then the gas turbine is used for expansion work to drive compressor and external load to make high-speed rotation, and the waste gas discharged from gas turbine is led into waste heat boiler to produce high-temperature high-pressure steam to drive turbine, and then the turbine and gas turbine can be together used for driving generator to produce power. The configuration of the gas-steam combined cycle generator set adopts a 'one-to-one' double-shaft gas-steam combined cycle generator set, namely a gas compressor, a gas turbine generator and a gas pressurizing machine are coaxially driven by a gas turbine, the gas turbine does work to drive the gas compressor and the gas compressor, and the rest part drives the gas turbine generator to generate power; the high-temperature flue gas discharged by the gas turbine enters the waste heat boiler again to generate steam, the steam enters the steam turbine for secondary power generation, and the steam turbine generator form another shaft system.
Because the system shafting is complex, in particular to a gas turbine shafting, equipment is connected by adopting a middle shaft mode. The low-pressure coal press is connected with the gas turbine generator by adopting a diaphragm type coupling, relative axial displacement and eccentricity of the two rotors are allowed, as the revolution of the coal press is higher 4220rpm, and accessories such as a coupling bolt gasket are more, the risk of loosening and falling exists, in order to ensure the safety of equipment and personnel, a wheel-aligning shield is arranged by a manufacturer, and in order to ensure the strength and sealing of the wheel-aligning shield, the wheel-aligning shield is in sealing connection with a gear box driving side bearing seat. During debugging, the oil seal of the bearing seat at the driving side of the gearbox is found to be seriously leaked, so that the debugging cannot be continued. The negative pressure in the gear box is measured to be-20 mbar, so that the problems of negative pressure in the gear box and an oil seal body are solved. Finally, the shaft system rotates at a high speed to drive the air flow in the opposite wheel shield to rotate at a high speed, the power head of the air flow is improved according to Bernoulli energy conservation law, the pressure energy head is caused to descend, negative pressure is formed on the housing of the bearing seat, lubricating oil in the gear box is sucked out, and the sealing effect of the sealing teeth of the bearing seat of the driving side of the gear box is invalid. Therefore, the wheel guard needs to be modified to solve the oil leakage problem.
The relevant patent documents are: the Chinese patent application No. 202220870020.4 discloses an oil leakage prevention device of a high-pressure oil tank, which comprises a labyrinth seal and a bowl-shaped oil retainer arranged in the oil tank, wherein the bowl-shaped oil retainer is formed with a protection area between the oil retainer and the labyrinth seal by rotating, so that the possibility of oil leakage of the labyrinth seal is effectively reduced. The device is arranged on the main shaft in the oil tank, has higher equipment precision, is not suitable for on-site assembly, and does not fundamentally solve the problem that the air cooling structure forms negative pressure.
Disclosure of Invention
The utility model aims to provide a rotary mechanical wheel-setting shield capable of breaking internal vacuum, which overcomes the defects of the prior art, and the internal vacuum of the wheel-setting shield is quickly broken through structural improvement of the wheel-setting shield of a gas-steam combined cycle generator set, meanwhile, the strength and the sealing property of the wheel-setting shield are ensured, the problem of oil leakage caused by sealing failure of a gear box driving side bearing seat due to the internal vacuum of the wheel-setting shield is solved, and the safe operation of the gas-steam combined cycle generator set is ensured.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme:
the utility model provides a can destroy inside vacuum's rotary machine wheel pair guard shield, includes flange one, flange two, tang ring and go-between, is connected through the go-between flange one and flange two, the tang ring is connected on the lateral surface of flange one, the external diameter of tang ring and the trompil assorted on the coal press rotor dustcoat, flange two is connected through the screw with the drive side bearing frame lateral wall of gear box, its characterized in that, be equipped with the pressure regulating hole on flange one and/or the go-between, the connecting hole outside that the outside screw of flange two corresponds is equipped with the abrupt ring platform.
Preferably, the pressure regulating holes are distributed on the surface of the flange one and/or the connecting ring around the circumference, the diameter of the pressure regulating holes is 10-12mm, and the number of the pressure regulating holes is 12-18.
Preferably, the adjacent pressure regulating holes are equidistant or non-equidistant.
Preferably, the protruding ring table and the second flange are of an integrated structure or a split structure.
Preferably, the height of the protruding ring table is 10-15mm.
Preferably, the pressure regulating holes are arranged on the first flange, and the number of the pressure regulating holes is 14.
Preferably, the first flange is of an upper-lower split structure and is integrally connected through screws.
Compared with the prior art, the utility model has the beneficial effects that:
1) The structure of the wheel-aligning shield of the gas-steam combined cycle generator set is improved, so that the internal vacuum of the wheel-aligning shield is quickly destroyed, the strength and the sealing performance of the wheel-aligning shield are ensured, the problem of oil leakage caused by failure of sealing of a gear box due to the internal vacuum of the wheel-aligning shield is solved, and the safe operation of the gas-steam combined cycle generator set is ensured;
2) The working condition stability of rotating equipment in the gas-steam combined cycle generator set and the safety of operators are ensured, and the smooth debugging work is ensured; the oil leakage maintenance frequency is zero because of the failure of the sealing effect of the sealing teeth of the driving side bearing seat of the gear box.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a state-of-use reference diagram of an embodiment of the present utility model;
FIG. 4 is a schematic illustration of the air flow during operation of an embodiment of the present utility model.
In the figure: the novel hydraulic cylinder comprises a 1-pair of wheel shields, a 2-coal press rotor housing, a 3-driving side bearing seat, a 4-flange I, a 5-flange II, a 6-connecting ring, a 7-spigot ring, an 8-protruding ring table, a 9-pressure regulating hole, a 10-gear box, 11-screws, a 12-intermediate shaft and 13-connecting holes.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
The components of the embodiments of the present utility model generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
1-2, the structural schematic diagram of an embodiment of a rotary mechanical pair wheel shield capable of breaking internal vacuum of the utility model comprises a first flange 4, a second flange 5, a spigot ring 7 and a connecting ring 6, wherein the first flange 4 and the second flange 5 are connected through the connecting ring 6, the spigot ring 7 is connected to the outer side surface of the first flange 4, the outer diameter of the spigot ring 7 is matched with an opening on a rotor housing 2 of a coal press, the second flange 5 is connected with the side wall of a bearing seat 3 on a driving side of a gear box 10 through screws, pressure regulating holes 9 are formed in the first flange 4, and protruding ring platforms 8 are arranged on the outer sides of connecting holes 13 corresponding to the screws on the outer sides of the second flange 5.
The protruding ring table 8 and the second flange 5 are of an integral structure or a split structure, and when the protruding ring table is of a split structure, the protruding ring table is of a thick gasket structure. The height of the protruding ring table 8 is 10-15mm. In order to be conveniently installed on the intermediate shaft 12, the first flange 4 is of an upper-lower split structure and is integrally connected through screws.
In order to realize the function of adjusting pressure, the pressure adjusting holes 9 can be distributed on the surface of the flange one 4 and/or the connecting ring 6 around the circumference, and the diameter of the pressure adjusting holes 9 is 10-12mm, and the number of the pressure adjusting holes is 12-18. The adjacent pressure regulating holes 9 can be equidistant or non-equidistant. Preferably, the pressure regulating holes 9 are arranged on the first flange 4, and the number of the pressure regulating holes is 14, and the diameter of the pressure regulating holes is 10mm.
Referring to fig. 3 and 4, in the application state reference diagram of the embodiment of the utility model, the application method of the wheel guard capable of eliminating internal vacuum of the utility model is that after the wheel guard 1 is connected with the side wall of the driving side bearing seat 3 of the gear box 10 through the screw 11, an air inlet channel (along the direction of a solid line arrow) is formed by a gap formed by the pressure regulating hole 9 and the protruding ring table 8 between the outer side of the wheel guard 1 and the inner side space of the wheel guard, compared with the original air inlet channel path shown by a dotted line, the embodiment of the utility model is easier to realize the balance of air pressure, thereby eliminating the vacuum problem in the wheel guard 1, and the oil leakage problem of the gear box is solved because the gap is formed between the air flow and the driving side bearing seat 3 of the gear box, the structure also does not influence the strength and the sealing performance of the wheel guard, and the realization of the protection function of the middle shaft 12.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a can destroy inside vacuum's rotary machine wheel pair guard shield, includes flange one, flange two, tang ring and go-between, is connected through the go-between flange one and flange two, the tang ring is connected on the lateral surface of flange one, the external diameter of tang ring and the trompil assorted on the coal press rotor dustcoat, flange two is connected through the screw with the drive side bearing frame lateral wall of gear box, its characterized in that, be equipped with the pressure regulating hole on flange one and/or the go-between, the connecting hole outside that the outside screw of flange two corresponds is equipped with the abrupt ring platform.
2. A rotating machinery wheel-set cover capable of breaking internal vacuum according to claim 1, wherein said pressure regulating holes are circumferentially distributed on the surface of the flange one and/or the connecting ring, the diameter of the pressure regulating holes is 10-12mm, and the number is 12-18.
3. A rotary machine pair wheel guard capable of breaking an internal vacuum according to claim 2, wherein adjacent said pressure regulating apertures are equidistant or non-equidistant.
4. The rotating machinery wheel-set cover capable of breaking internal vacuum according to claim 1, wherein said protruding ring stand and said flange are of a two-piece or split construction.
5. A rotary machine wheel-set cover capable of breaking an internal vacuum according to claim 1, wherein the height of said protruding ring land is 10-15mm.
6. A rotary machine wheel-set cover capable of breaking an internal vacuum according to claim 1, wherein said pressure regulating holes are provided in the first flange, 14 in number.
7. The rotating machinery wheel-set cover capable of breaking internal vacuum according to claim 1, wherein said flange one is of a split structure, and is integrally connected by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321619257.6U CN220319680U (en) | 2023-06-26 | 2023-06-26 | Rotary machinery wheel-aligning shield capable of breaking internal vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321619257.6U CN220319680U (en) | 2023-06-26 | 2023-06-26 | Rotary machinery wheel-aligning shield capable of breaking internal vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220319680U true CN220319680U (en) | 2024-01-09 |
Family
ID=89408891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321619257.6U Active CN220319680U (en) | 2023-06-26 | 2023-06-26 | Rotary machinery wheel-aligning shield capable of breaking internal vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220319680U (en) |
-
2023
- 2023-06-26 CN CN202321619257.6U patent/CN220319680U/en active Active
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