CN113531091A - Respirator for wind power gear box - Google Patents
Respirator for wind power gear box Download PDFInfo
- Publication number
- CN113531091A CN113531091A CN202110868472.9A CN202110868472A CN113531091A CN 113531091 A CN113531091 A CN 113531091A CN 202110868472 A CN202110868472 A CN 202110868472A CN 113531091 A CN113531091 A CN 113531091A
- Authority
- CN
- China
- Prior art keywords
- pipe
- cold liquid
- gear box
- fixed mounting
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000007788 liquid Substances 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 239000002274 desiccant Substances 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 13
- 239000000110 cooling liquid Substances 0.000 abstract description 12
- 238000001035 drying Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 39
- 238000000034 method Methods 0.000 description 7
- 238000007791 dehumidification Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000003434 inspiratory effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013527 degreasing agent Substances 0.000 description 2
- 238000005237 degreasing agent Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to the technical field of wind energy industry, and discloses a respirator for a wind power gear box. The invention separates the oil content in the gas by using the oil removing agent, thereby achieving the oil removing effect, absorbing heat and reducing temperature of the flowing high-temperature gas by the cooling liquid in the cold liquid pipe, converting the flowing high-temperature gas into cold-temperature gas, recycling the gas by the exhaust pipe, providing wind energy for the air cooling mechanism, improving the cooling effect of the air cooling mechanism, reducing the mechanical energy consumption of the air cooling mechanism, absorbing the heat of the high-temperature gas by the cooling liquid, storing heat on the surface of the pipe body, when the wind power gear box performs air suction and power generation, the sucked air passes through the pipe body wall of the cold liquid pipe with heat energy after being dried and dehumidified by the drying agent, and can perform secondary drying when passing through the space between the inner pipe bodies of the cold liquid pipe.
Description
Technical Field
The invention relates to the technical field of wind energy industry, in particular to a respirator for a wind power gear box.
Background
The wind power gear box is an important mechanical component in a wind power generator set, and the wind power gear box mainly plays a role of transmitting power generated by a wind wheel under the action of wind power to a generator to enable the generator to obtain corresponding rotating speed, and because the wind power gear box needs to suck air as power, the air contains particle impurities and moisture, a respirator is installed at one end of the wind power gear box in the prior art, the respirator is used for removing the impurities and the moisture in the air, the phenomenon that the impurities and the moisture penetrate into the gear box to cause failure of the gear box is avoided, the existing respirator is generally composed of a filter core and a shell, wherein the filter core is mainly composed of a drying agent, and the respirator is simple in structure and convenient to use, so that the respirator is widely applied.
Because the wind power gear box is mainly of a gear transmission structure, under the long-term running-in work of gears, high temperature can be generated inside the gear box, in order to avoid overhigh internal air pressure, the wind power gear box can independently discharge high-temperature and high-pressure gas inside the gear box through a breather, meanwhile, air cooling equipment is arranged at the top end of the gear box and timely cools the gear box, so that the working environment of the gear box is protected, but when the existing gear box runs, because the temperature in the gear box is higher, internal lubricating oil is heated and evaporated into oil gas, when the gear box exhales, the gas discharged into the breather contains a large amount of oil gas, the existing breather does not have the oil removing function, the oil gas cannot be effectively removed, after the high-temperature gas containing the oil gas is discharged, the high-temperature gas flows upwards and passes through the air cooling equipment, the oil gas can be attached to the surface of the air cooling equipment, oil dirt can be formed under the air cooling equipment for a long time, and a large amount of impurities can be adhered to the surface of the air cooling equipment, influence the forced air cooling, and then lead to the gear box cooling effect to descend, cause mechanical heat damage easily.
Disclosure of Invention
Aiming at the defects of the existing wind power gear box breather provided in the background technology in the using process, the invention provides the breather for the wind power gear box, which has the advantages that the breather can automatically cool and remove oil from exhaust gas, oil-gas pollution is avoided, the air is beneficial to drying and dehumidifying during air intake, and the technical problems provided in the background technology are solved.
The invention provides the following technical scheme: a respirator for a wind power gear box comprises a top sealing cover, wherein a shell is fixedly installed at the bottom end of the top sealing cover, a drying agent is fixedly installed in an inner cavity of the shell, a cold liquid pipe is fixedly installed on the inner side of the drying agent, a flow guide wall is fixedly installed on the surface of the inner side of the cold liquid pipe, a degreasing agent is fixedly installed in the middle of the inner cavity of the flow guide wall, a main air pipe located in the middle of the inner cavity of the shell is fixedly installed on the inner side of the degreasing agent, a connector is arranged at the bottom end of the main air pipe, a supporting spring located in the middle of the inner cavity of the shell is fixedly installed in the middle of the bottom end of the top sealing cover, a cover plate is movably installed at one end of the supporting spring, a liquid inlet pipe is fixedly installed on one side of the bottom end of the cold liquid pipe, a liquid outlet pipe is fixedly installed on the other side of the bottom end of the cold liquid pipe, an exhaust pipe is fixedly installed at the bottom end of the flow guide wall, and an air cooling mechanism is fixedly installed at one end of the exhaust pipe, and a wind power gear box is fixedly arranged at one end of the interface.
Preferably, the desiccant is in a circular ring shape, and the height value of the desiccant is smaller than that of the shell.
Preferably, the overall section of the pipe body of the cold liquid pipe is in an inverted U shape, the bottom end of the outer pipe body of the cold liquid pipe is provided with an opening, and the bottom end of the inner pipe body of the cold liquid pipe is closed.
Preferably, the flow guide wall is cylindrical, and the top of one end, facing the top sealing cover, of the cylinder body is consistent with the horizontal position of the top of one end, facing the top sealing cover, of the main airflow pipe.
Preferably, the cover plate is circular, and the diameter value of the cover plate is equal to the distance value between the two ends of the inner side of the cold liquid tube body.
The invention has the following beneficial effects:
1. the invention separates the air suction and exhaust channels of the gear box by mutually nesting the shell, the cold liquid pipe, the main air flow pipe and the flow guide wall, avoids the uncontaminated air and the air mixed with oil gas, realizes that the respirator can carry out oil removal work on the exhaust gas in a targeted way, and separates the oil in the discharged high-temperature and high-pressure gas containing oil gas by using the emulsification of the oil removal agent, thereby achieving the effect of removing the oil gas, ensuring that the discharged gas does not contain oil gas pollution, protecting the gear box from being damaged by hot pressing, and preventing an air cooling mechanism from being polluted by the adhesion of the oil gas.
2. According to the invention, the cooling liquid continuously flowing in the inner pipe body of the cold liquid pipe is utilized to absorb heat and cool the high-temperature gas flowing opposite to the cold liquid pipe, so that the heat content of the gas is reduced, the gas is converted into cold-temperature gas, after the cold-temperature gas is deoiled by the deoiling agent, the cold-temperature gas is recycled through the exhaust pipe, wind energy is provided for the air cooling mechanism, the air cooling and cooling of the air cooling mechanism are facilitated, the cooling effect of the air cooling mechanism is improved, and the mechanical energy consumption of the air cooling mechanism is reduced.
3. According to the invention, the heat of high-temperature gas is absorbed by the cooling liquid positioned on the inner side tube body of the cold liquid tube, and heat is stored on the surface of the tube body of the cold liquid tube, when the wind power gear box performs air suction and power generation, sucked air is dried and dehumidified by the drying agent and flows between the inner side tube bodies of the cold liquid tube, and meets the tube body wall of the cold liquid tube with heat energy stored, the air can be dried for the second time, and the method is favorable for solving the problems that the dehumidification and drying effects of the existing respirator drying agent are reduced and the drying degree of the sucked air is poor after the existing respirator drying agent is used for a long time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the structure of the present invention in a state of sucking air;
FIG. 3 is a schematic sectional view of the structure of the present invention in a state of exhausting air;
FIG. 4 is a schematic top view of the structure of the present invention.
In the figure: 1. a top sealing cover; 2. a housing; 3. a desiccant; 4. a cold liquid pipe; 5. a flow guide wall; 6. oil removing agent; 7. a primary gas flow tube; 8. an interface; 9. a support spring; 10. a cover plate; 11. a liquid inlet pipe; 12. a liquid outlet pipe; 13. an exhaust pipe; 14. an air cooling mechanism; 15. wind power gear box.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a respirator for a wind power gear box comprises a top sealing cover 1, a casing 2 is fixedly installed at the bottom end of the top sealing cover 1, a drying agent 3 is fixedly installed in an inner cavity of the casing 2, a cold liquid pipe 4 is fixedly installed on the inner side of the drying agent 3, a flow guide wall 5 is fixedly installed on the inner side surface of the cold liquid pipe 4, an oil removing agent 6 is fixedly installed in the middle of an inner cavity of the flow guide wall 5, oil in high-temperature and high-pressure gas containing oil gas is separated through the emulsification of the oil removing agent 6, the oil gas removing effect is achieved, the discharged gas is guaranteed not to contain oil gas pollution, a main gas pipe 7 located in the middle of the inner cavity of the casing 2 is fixedly installed on the inner side of the oil removing agent 6, different gas flow passages are formed among the casing 2, the cold liquid pipe 4, the main gas pipe 7 and the flow guide wall 5, wherein when the wind power gear box 15 inhales gas is formed between the casing 2 and the cold liquid pipe 4, the air flowing channel and the air flowing direction are as shown by the arrow in the attached drawing 1, and formed among the cold liquid pipe 4, the main air flow pipe 7 and the flow guide wall 5, when the wind power gear box 15 exhausts air, the air flowing channel and the air flowing direction are as shown by the arrow in the attached drawing 2, by separating the air-sucking channel and the air-exhausting channel, the situation that the air which is not polluted and the air which is mixed with oil gas are mixed together when the air-sucking channel and the air which is mixed with oil gas are prevented from being mixed when the air-sucking channel and the air which are mixed with oil gas are exhausted can be avoided, the respirator can pertinently help the exhausted air to carry out the work of automatically removing oil is facilitated, the bottom end of the main air flow pipe 7 is provided with the interface 8, the middle part of the bottom end of the top sealing cover 1 is fixedly provided with the supporting spring 9 which is positioned in the middle part of the inner cavity of the shell 2, one end of the supporting spring 9 is movably provided with the cover plate 10, one side of the bottom end of the cold liquid pipe 4 is fixedly provided with the liquid inlet pipe 11, the other side of the bottom end of the cold liquid pipe 4 is fixedly provided with the liquid outlet pipe 12, an exhaust pipe 13 is fixedly installed at the bottom end of the flow guide wall 5, an air cooling mechanism 14 is fixedly installed at one end of the exhaust pipe 13, a wind power gear box 15 is fixedly installed at one end of the connector 8, when the wind power gear box 15 discharges high-temperature and high-pressure gas inside the wind power gear box and enters the main airflow pipe 7 through the connector 8, the high-temperature and high-pressure gas pushes the cover plate 10 to seal a rear end channel, so that the gas can only flow from two sides, and the flow guide effect is achieved.
The shape of the drying agent 3 is circular ring, and the height value of the drying agent 3 is smaller than that of the shell 2.
Wherein, the whole section of the tube body of the cold liquid tube 4 is in an inverted U shape, the bottom of the outer tube body of the cold liquid tube 4 is provided with an opening, the cooling liquid is poured into the cold liquid tube 4 from the opening through the liquid inlet tube 11, the bottom of the inner tube body is closed, when the gas flows from the two sides of the inner cavity of the main gas tube 7 to the channel of the oil removing agent 6, the flowing high-temperature gas is cooled by the cooling liquid flowing in the inner tube body of the cold liquid tube 4, which is helpful for reducing the heat content of the gas and converting the gas into the cold-temperature gas, when the cold-temperature gas is deoiled by the oil removing agent 6, the cold-temperature gas can be reused through the exhaust tube 13 for providing wind energy for the wind cooling mechanism 14, thereby facilitating the wind cooling, improving the cooling effect of the wind cooling mechanism 14 and reducing the energy consumption, and at the same time, the cooling liquid positioned in the inner tube body of the cold liquid tube 4 absorbs the heat of the high-temperature gas, and store heat on the body surface, when wind-powered electricity generation gear box 15 breathes in and exert oneself, inspiratory air is after 3 drying dehumidifications of drier, between the inboard body of cold liquid pipe 4 of flowing through, meets the tube body wall that has stored up heat energy and can carry out the secondary and dry, and this mode helps solving current respirator drier 3 after the live time is longer, and its dehumidification drying effect descends, the not good problem of inspiratory air drying degree.
The flow guide wall 5 is cylindrical, and the top of one end of the cylinder body facing the top sealing cover 1 is consistent with the horizontal position of the top of one end of the main air flow pipe 7 facing the top sealing cover 1.
Wherein, the shape of the cover plate 10 is circular, and the diameter value thereof is equal to the distance value between the two ends of the inner side of the tube body of the cold liquid tube 4.
The using method of the invention has the following working principle:
when the wind power gear box 15 sucks air to generate force, external air is sucked into the shell 2 through one end of the shell, sucked air flows through gaps of the drying agent 3 and is subjected to water absorption and dehumidification through the drying agent 3, the dehumidified and dried air flows between the inner pipe bodies of the cold liquid pipe 4 along with a channel formed in the structure and flows downwards along the pipe walls of the cold liquid pipe, and the air flow speed is high due to the small volume among the pipe bodies, the flowing gas pushes the cover plate 10 open, the gas flows out from the opening and enters the interior of the wind power gear box 15 through the interface 8 for wind power driving, and after the wind power gear box 15 runs for a period of time, the gas in the main gas flow pipe 7 is heated to gradually form high-pressure high-temperature gas mixed with oil gas, and the high-pressure high-temperature gas containing the oil gas is discharged to the interface 8 through the existing exhaust device and enters the main gas flow pipe 7 through the interface 8.
That is, when the wind power gear box 15 exhausts and exhales, because the cover plate 10 is pushed by the gas, the resilience of the support spring 9 and the gas pressure are offset relatively, the cover plate 10 can keep a certain stability, and the channel between the inner side tube bodies of the cold liquid tube 4 is sealed, at this time, the high-temperature and high-pressure gas containing oil gas flows to the channel where the oil removing agent 6 is located from the two sides of the inner cavity of the main gas tube 7, respectively, when the gas flows to the channel where the oil removing agent 6 is located from the two sides of the inner cavity of the main gas tube 7, the existing pump body structure is utilized to pump the cooling liquid into the inner part and outer tube bodies of the cold liquid tube 4 through the liquid inlet tube 11, so that the inner and outer tube bodies are filled with the cooling liquid, and the cooling liquid is discharged from the liquid outlet tube 12 to form a circulating flow of the cooling liquid, at this time, the flowing high-temperature gas is cooled by the cooling liquid flowing in the inner side tube bodies of the cold liquid tube 4, so that the flowing gas becomes a low-temperature gas, when the low-temperature gas passes through the oil removing agent 6, the oil removing agent 6 can separate oil from gas, and the oil removing effect is achieved.
After gaseous deoiling, discharge this cold warm gas through blast pipe 13, arrange to the income wind gap of forced air cooling mechanism 14, be used for providing certain wind energy for forced air cooling mechanism 14, improve the cooling effect of forced air cooling mechanism 14, reduce the power consumption, meanwhile, the coolant liquid that is located the inboard body of cold liquid pipe 4 absorbs the heat of high-temperature gas, and at body surface heat-retaining, when wind-powered electricity generation gear box 15 breathes in and generates power, inspiratory air is after 3 drying dehumidifications through the drier, flow through between the inboard body of cold liquid pipe 4, meet the tube body wall that has stored up heat energy, the air can carry out the secondary and dry, improve drying effect.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a respirator for wind-powered electricity generation gear box, includes top closing cap (1), its characterized in that: the bottom fixed mounting of top closing cap (1) has casing (2), the inner chamber fixed mounting of casing (2) has drier (3), the inboard fixed mounting of drier (3) has cold liquid pipe (4), the inboard fixed surface of cold liquid pipe (4) installs water conservancy diversion wall (5), the inner chamber middle part fixed mounting of water conservancy diversion wall (5) has except that finish (6), the inboard fixed mounting of except that finish (6) has main air flow pipe (7) that is located the inner chamber middle part of casing (2), interface (8) have been seted up to the bottom of main air flow pipe (7), the bottom middle part fixed mounting of top closing cap (1) has supporting spring (9) that is located the inner chamber middle part of casing (2), the one end movable mounting of supporting spring (9) has apron (10), bottom one side fixed mounting of cold liquid pipe (4) has liquid inlet pipe (11), the utility model discloses a wind-powered electricity generation gear box, including cold liquid pipe (4), the bottom opposite side fixed mounting of cold liquid pipe (4) has drain pipe (12), the bottom fixed mounting of water conservancy diversion wall (5) has blast pipe (13), the one end fixed mounting of blast pipe (13) has forced air cooling mechanism (14), the one end fixed mounting of interface (8) has wind-powered electricity generation gear box (15).
2. The respirator for a wind power gearbox according to claim 1, wherein: the drying agent (3) is in a ring shape, and the height value of the drying agent (3) is smaller than that of the shell (2).
3. The respirator for a wind power gearbox according to claim 1, wherein: the whole section shape of the pipe body of the cold liquid pipe (4) is in an inverted U shape, the bottom end of the outer pipe body of the cold liquid pipe (4) is provided with an opening, and the bottom end of the inner pipe body is closed.
4. The respirator for a wind power gearbox according to claim 1, wherein: the flow guide wall (5) is cylindrical, and the top of one end, facing the top sealing cover (1), of the cylinder body is consistent with the horizontal position of the top of one end, facing the top sealing cover (1), of the main airflow pipe (7).
5. The respirator for a wind power gearbox according to claim 1, wherein: the cover plate (10) is circular, and the diameter value of the cover plate is equal to the distance value between the two ends of the inner side of the tube body of the cold liquid tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110868472.9A CN113531091A (en) | 2021-07-30 | 2021-07-30 | Respirator for wind power gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110868472.9A CN113531091A (en) | 2021-07-30 | 2021-07-30 | Respirator for wind power gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113531091A true CN113531091A (en) | 2021-10-22 |
Family
ID=78089844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110868472.9A Pending CN113531091A (en) | 2021-07-30 | 2021-07-30 | Respirator for wind power gear box |
Country Status (1)
| Country | Link |
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| CN (1) | CN113531091A (en) |
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| CN212839298U (en) * | 2020-08-06 | 2021-03-30 | 固安中滤过滤科技有限公司 | Novel gear box respirator |
| CN111963665A (en) * | 2020-08-12 | 2020-11-20 | 南京孚奥智能技术有限公司 | Breathing apparatus for removing oil by inhalation, drying and exhalation for wind power gear box |
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Application publication date: 20211022 |