CN114623092A - Stationary blade adjustable axial flow fan with novel oil lubrication system - Google Patents
Stationary blade adjustable axial flow fan with novel oil lubrication system Download PDFInfo
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- CN114623092A CN114623092A CN202011442169.4A CN202011442169A CN114623092A CN 114623092 A CN114623092 A CN 114623092A CN 202011442169 A CN202011442169 A CN 202011442169A CN 114623092 A CN114623092 A CN 114623092A
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- bearing
- main bearing
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- 238000005461 lubrication Methods 0.000 title claims description 21
- 238000013461 design Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 80
- 239000010687 lubricating oil Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 230000001174 ascending effect Effects 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/051—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of fans, and particularly relates to a stationary blade adjustable axial flow fan with a novel oil lubricating system. The fan is composed of a motor, an intermediate shaft, an air inlet box, a large collector assembly, a small collector assembly, an adjustable front guide vane assembly, a casing assembly, an impeller, a main bearing assembly, a rear guide vane assembly, a cold air cover, an inlet oil pipe, an outlet oil pipe, an atmosphere balance pipe, a diffuser, a cold air pipeline assembly and the like. The method is characterized in that: the main bearing assembly is provided with an inlet oil circuit, an atmospheric balance hole, an oil discharge port and an oil return pipeline which are communicated with the radial roller bearing and the radial thrust ball bearing, a platinum thermal resistance hole, two seals and two cooling air flow channels, an oil retainer is arranged between the shaft sleeve and the radial roller bearing, and a framework oil seal and a labyrinth seal are arranged between the shaft sleeve and the front bearing cover. Atmospheric balance pipe anterior segment be ascending notch cuttype, communicate each other between each atmospheric balance hole, its core barrel bottom of back stator assembly design have the oil drain hole, back stator export design has the steel pipe.
Description
Technical Field
The invention belongs to the technical field of fans, and particularly relates to a stationary blade adjustable axial flow fan with a novel oil lubricating system.
Background
The stationary blade adjustable axial flow fan has the advantages of simple structure, wear resistance, high efficiency and the like, and is widely applied to thermal power stations and metallurgical industry. Along with the continuous improvement of energy-concerving and environment-protective requirement for the unit is towards high-efficient and the large-scale rapid development, and current wind cigarette system changes into the fan combination mode of "increase unification" mostly, so require more and more high to the fan rotational speed, but the high rotational speed operation of fan can make the bearing generate heat and increase, and the bearing temperature risees, finally influences the stability ability of fan. The cooling and lubricating modes of the traditional stationary blade adjustable axial flow fan bearing are air cooling and grease lubrication, the cooling and lubricating effects are not ideal, and particularly in summer, great confusion is brought to users, and the strong demand of forced thin oil lubrication for the stationary blade adjustable axial flow fan in the market is met in order to guarantee the safety and stability of long-term operation of the fan.
Therefore, the static blade adjustable axial flow fan with the novel oil lubricating system is developed, so that the personalized requirements of users can be met, and the domestic technical blank in the aspect of the static blade adjustable axial flow fan oil lubricating system is filled.
Disclosure of Invention
The invention designs a stationary blade adjustable axial flow fan with a novel oil lubricating system aiming at the problems of grease lubrication of the bearing of the traditional stationary blade adjustable axial flow fan, so as to improve the service life of the bearing and the running performance of the fan. The novel stator blade adjustable axial flow fan creatively designed by the invention eliminates the defects of the traditional grease lubrication, so that the fan can stably run for a long time.
The technical scheme of the invention is as follows: a stationary blade adjustable axial flow fan with a novel oil lubricating system mainly comprises a motor, an intermediate shaft, an air inlet box, a large current collector assembly, an adjustable front guide blade assembly, a small current collector assembly, a casing assembly, an impeller, a main bearing assembly, a rear guide blade assembly, a cold air cover, an inlet oil pipe, an atmosphere balance pipe, an outlet oil pipe, a diffuser, a cold air pipeline assembly and the like. The motor drives the intermediate shaft to rotate, the intermediate shaft drives the impeller to rotate and apply work to the air flow, the whole oil lubrication system starts to operate, and the air continuously cools and seals the bearing through the cold air pipeline. The air flow entering from the air inlet box passes through a large current collector, an adjustable front guide vane, a small current collector, an impeller, a rear guide vane and a diffuser respectively, and finally the whole working process of the fan is finished.
The method is characterized in that: the novel oil lubrication system comprises a main bearing assembly, an inlet oil pipe, an atmosphere balance pipe, an outlet oil pipe and the like, wherein the main bearing assembly is provided with an inlet oil way, an atmosphere balance hole, an oil discharge port and an oil return pipeline, the inlet oil way, the atmosphere balance hole, the oil discharge port and the oil return pipeline are respectively provided with a radial roller bearing and a radial thrust ball bearing, the inlet oil way and the outlet oil way are respectively connected with the outlet oil pipe, and the atmosphere balance holes in the main bearing assembly are respectively connected with a communication pipe and are finally connected with the atmosphere balance pipe. Atmospheric balance pipe anterior segment be ascending notch cuttype design, be intercommunication each other between each atmospheric balance hole, main bearing assembly on also the design have platinum resistance hole, two sealed wind runner and two inlet flow ways of cooling air, main bearing assembly on axle sleeve and the centripetal roller bearing between the design have the oil scraper ring, simultaneously, the design has skeleton oil blanket and labyrinth seal between axle sleeve and the front bearing cap, the core section of thick bamboo bottom design of back stator assembly have the oil drain hole in certain aperture to back stator exit design has the steel pipe of certain size.
The invention has the beneficial effects that: the invention designs a novel oil lubrication system, namely, the bearing is lubricated by adopting forced thin oil, and the oil lubrication mode avoids the problems of poor liquidity, large heat productivity, poor heat dissipation, high temperature, short service life and the like of the traditional grease lubrication. The designed main bearing assembly adopts a special sealing structure, has good sealing performance, prevents lubricating oil from leaking and the like in the running process of the fan, and the novel oil lubricating system is improved and designed on the basis of the traditional structure, and has the running conditions that the oil way inlet amount is 2-4L/min and the oil pressure is about 0.3MPa, so that the main bearing assembly and the novel oil lubricating system have interchangeability.
In addition, each atmosphere balance hole in the main bearing assembly is respectively connected with the communicating pipe and finally connected with the atmosphere balance pipe, and the atmosphere balance holes are communicated with each other, therefore, the existence of the atmosphere balance pipe maintains the balance between the pressure in the main bearing assembly and the external pressure, wherein the balance between the pressure between the radial roller bearing and the front bearing cover, the pressure between the radial roller bearing and the radial thrust ball bearing and the pressure between the radial thrust ball bearing and the rear bearing cover and the atmospheric pressure is maintained, and the arrangement mode of the front section of the atmosphere balance pipe is designed to be a rising ladder type and has a certain height difference, thereby avoiding the condition of lubricating oil siltation possibly occurring in the atmosphere balance pipe when the main shaft rotates at high speed. In addition, the bearing is generally cooled by air in the main bearing assembly, so that two cooling air circulation flow channels are designed in the main bearing assembly, and good cooling and sealing effects on the bearing are achieved. The main bearing assembly is also provided with two sealed air flow passages, so that smoke can be prevented from entering the bearing box and lubricating oil inside the main bearing assembly from leaking, the rear guide vane assembly has a better sealing design structure, the bottom of the core cylinder is provided with an oil discharge hole with a certain aperture, the outlet of the rear guide vane is provided with a steel pipe with a certain size, and when an oil return pipeline is pulled out during field maintenance, the lubricating oil can flow out from the oil discharge hole at the bottom of the core cylinder assembled by the rear guide vane and flows to the ground after passing through the designed outlet steel pipe, so that the maintenance in the field is facilitated.
To sum up, this adjustable axial fan of quiet leaf with novel oil lubricating system has not only guaranteed the safety and stability of fan under the high rotational speed operating condition, also has higher economic value to the user moreover.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of the main bearing assembly of the present invention.
FIG. 3 is a cross-sectional view A-A of the main bearing assembly of the present invention.
FIG. 4 is a cross-sectional view of a main bearing assembly structure B-B of the present invention.
FIG. 5 is an enlarged fragmentary view of a cross-sectional view of a main bearing assembly B-B of the present invention.
FIG. 6 is a cross-sectional view of a main bearing assembly structure C-C of the present invention.
FIG. 7 is a cross-sectional view of a main bearing assembly structure D-D of the present invention.
FIG. 8 is a schematic view of an assembly structure of the rear guide vane of the present invention.
FIG. 9 is a partial A-A cross-sectional view of the rear guide vane assembly of the present invention.
In the drawings, corresponding technical features are labeled as follows:
1-motor, 2-intermediate shaft, 3-air inlet box, 4-large collector assembly, 5-adjustable front guide vane assembly, 6-small collector assembly, 7-machine shell assembly, 8-impeller, 9-main bearing assembly, 10-rear guide vane assembly, 11-cold air cover, 12-inlet oil pipe, 13-atmospheric balance pipe, 14-outlet oil pipe, 15-diffuser, 16-cold air pipeline assembly, 17-main shaft, 18-shaft sleeve, 19-front bearing cover, 20-bearing box, 21-oil retainer, 22-rear bearing cover, 23-oil outlet, W1-skeleton oil seal, W2-radial roller bearing and W3-radial thrust ball bearing.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in figures 1-9, in the implementation of the invention, firstly, a motor (1), a middle shaft (2), an air inlet box (3), a large current collector assembly (4), an adjustable front guide vane assembly (5), a small current collector assembly (6), a casing assembly (7), an impeller (8), a main bearing assembly (9), a rear guide vane assembly (10), a cold air hood (11), an inlet oil pipe (12), an atmosphere balance pipe (13), an outlet oil pipe (14), a diffuser (15), a cold air pipeline assembly (16) and the like are installed, the motor (1) is started, the motor (1) drives the middle shaft (2) to rotate, the middle shaft (2) drives the impeller (8) to rotate and apply work to air flow, the whole oil lubrication system ((9), (12), (13), (14) and the like) starts to operate, the air passes through the cold air pipeline (16) to continuously cool and seal a bearing, the air flow enters from the air inlet box (3), and finally the whole working process of the fan is finished through a large current collector assembly (4), an adjustable front guide vane assembly (5), a small current collector assembly (6), an impeller (8), a rear guide vane assembly (10) and a diffuser (15) in sequence.
The main bearing assembly (9) is connected with the main bearing assembly (9), and the atmosphere balance pipe (13) is connected with an atmosphere balance hole on the main bearing assembly (9), so that the balance between the pressure in the main bearing assembly (9) and the external pressure is maintained, wherein the balance between the pressure and the atmospheric pressure between the radial roller bearing (W2) and the front bearing cover (19), between the radial roller bearing (W2) and the radial thrust ball bearing (W3), and between the radial thrust ball bearing (W3) and the rear bearing cover (22) is included, the arrangement mode of the front section of the atmosphere balance pipe (13) is in a rising step shape and has a certain height difference, and the phenomenon that a large amount of lubricating oil in the atmosphere balance pipe (13) is deposited when the main shaft (17) rotates at a high speed is avoided. When the fan runs, 2-4L/min of lubricating oil is respectively conveyed to an inlet oil way of a radial roller bearing (W2) and a radial thrust ball bearing (W3) through an inlet oil pipe (12) at a set time, the inlet pressure of the lubricating oil is about 0.3MPa, and the lubricating oil rapidly flows in the inlet oil way, so that the lubricating and cooling effects on the bearing are achieved. Two cooling air circulation flow channels are designed on the main bearing assembly (9), the heating radial roller bearing (W2) and the radial thrust ball bearing (W3) are well cooled and sealed through the cold air pipeline assembly (16), and the main bearing assembly (9) is provided with a platinum thermal resistance temperature measuring hole for measuring the bearing temperature at different moments and feeding back a user. If the amount of lubrication oil in the main bearing assembly (9) is excessive, it will flow out of the oil drain (23) and through the outlet oil pipe (14) and finally into the oil station.
An oil retainer ring (21) is arranged between a shaft sleeve (18) of the main bearing assembly (9) and a radial roller bearing (W2), and a framework oil seal (W1) and a labyrinth seal are arranged between the shaft sleeve (18) and a front bearing cover (19), so that the leakage of lubricating oil under the high rotating speed of the main shaft (17) is prevented. In addition, a narrow gap is formed between the impeller (8) installed on the main bearing assembly (9) and the front bearing cover (19), and two sealed air flow channels are designed on the bearing box, so that smoke can be prevented from entering the bearing box (20), and lubricating oil in the main bearing assembly (9) can be sealed. The rear guide vane assembly (10) has a better sealing design structure, an oil discharge hole with a certain aperture is designed at the bottom of the core cylinder, a steel pipe with a certain size is designed at the outlet of the rear guide vane, when a user overhauls on site, the outlet oil pipe (14) of the main bearing assembly (9) can be pulled out, lubricating oil flows out from the oil discharge hole at the bottom of the core cylinder of the rear guide vane assembly (10) and flows to the ground after passing through the designed outlet steel pipe, and the overhaul in the site is facilitated. The fixed blade adjustable axial flow fan with the novel oil lubricating system is applied to multiple plants at present, and the actual use condition shows that the fan is good in structure and high in economic value.
Claims (5)
1. The utility model provides an adjustable axial fan of quiet leaf with novel oil lubrication system, this fan is by the motor, the jackshaft, the inlet box, big current collector assembly, adjustable front guide vane assembly, little current collector assembly, the casing assembly, the impeller, the base bearing assembly, back stator assembly, the cold wind cover, import oil pipe, the atmospheric balance pipe, export oil pipe, the diffuser, cold wind pipeline equipment etc. is constituteed, the motor drives the jackshaft and is rotary motion, the jackshaft drives the impeller rotation and does work to the air current, whole oil lubrication system begins the function, the air constantly cools off and seals the bearing through the cold wind pipeline, the air current gets into from the inlet box, loop through big current collector assembly, adjustable front guide vane assembly, little current collector assembly, the impeller, back stator assembly, the diffuser, the whole course of work of fan is finally accomplished, a serial communication port: the main bearing assembly is provided with an inlet oil way, atmosphere balance holes, an oil discharge port and an oil return pipeline which are communicated with each other, wherein the inlet oil way and an inlet oil pipe of the radial roller bearing and the radial thrust ball bearing are respectively connected with each other, each atmosphere balance hole in the main bearing assembly is respectively connected with a communicating pipe and finally connected with the atmosphere balance pipe, the front section of the atmosphere balance pipe is in a rising ladder-shaped design, the atmosphere balance holes are mutually communicated, lubricating oil flowing from the inlet oil way can lubricate and cool the bearing, when the oil level is higher than the top of the oil discharge port, the lubricating oil enters the oil discharge port and finally flows out from the outlet oil pipe, the main bearing assembly is provided with a platinum thermal resistance hole for measuring the temperature of the bearing in operation, the main bearing assembly is also provided with two sealed air flow passages and two inlet flow passages for cooling air, the oil retainer ring is designed between the shaft sleeve assembled on the main bearing and the radial roller bearing, meanwhile, the framework oil seal and the labyrinth seal are designed between the shaft sleeve and the front bearing cover, the leakage of lubricating oil in operation is avoided in a better sealing mode, the rear guide vane assembly has a good design and assembly structure, the bottom of a core cylinder is designed with an oil discharge hole with a certain hole diameter, and the steel pipe with a certain size is designed at the outlet of the rear guide vane, so that the overhaul in the field is facilitated.
2. The axial flow fan with adjustable stationary blades having a novel oil lubrication system as claimed in claim 1, wherein: the oil lubrication system is forced thin oil lubrication.
3. The stationary blade adjustable axial flow fan with a novel oil lubrication system as claimed in claim 1 or 2, wherein: the main bearing assembly has high sealing performance.
4. The axial flow fan with adjustable stationary blades having a novel oil lubrication system as claimed in claim 1, 2 or 3, wherein: the atmosphere balance pipe is connected with the atmosphere balance hole of the main bearing assembly, the balance of pressure inside the main bearing assembly and outside is maintained, the front section arrangement mode of the atmosphere balance pipe is in a rising step type and has a certain height difference, a large amount of siltation of lubricating oil in the atmosphere balance pipe is prevented when the main shaft rotates at a high speed, and the balance of pressure inside and outside the main bearing assembly is ensured.
5. The vane-adjustable axial fan with a novel oil lubrication system as claimed in claim 1, 2, 3 or 4, wherein: the lubricating oil system can greatly reduce the operating temperature of the bearing and prolong the service life of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011442169.4A CN114623092A (en) | 2020-12-08 | 2020-12-08 | Stationary blade adjustable axial flow fan with novel oil lubrication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011442169.4A CN114623092A (en) | 2020-12-08 | 2020-12-08 | Stationary blade adjustable axial flow fan with novel oil lubrication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114623092A true CN114623092A (en) | 2022-06-14 |
Family
ID=81894970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011442169.4A Pending CN114623092A (en) | 2020-12-08 | 2020-12-08 | Stationary blade adjustable axial flow fan with novel oil lubrication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114623092A (en) |
-
2020
- 2020-12-08 CN CN202011442169.4A patent/CN114623092A/en active Pending
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