CN109882336A - A kind of impulse turbine - Google Patents
A kind of impulse turbine Download PDFInfo
- Publication number
- CN109882336A CN109882336A CN201910178392.3A CN201910178392A CN109882336A CN 109882336 A CN109882336 A CN 109882336A CN 201910178392 A CN201910178392 A CN 201910178392A CN 109882336 A CN109882336 A CN 109882336A
- Authority
- CN
- China
- Prior art keywords
- wall
- sound
- runner
- impulse turbine
- water
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02E10/20—Hydro energy
Abstract
The invention discloses a kind of impulse turbines, including chassis cavity, chassis cavity outer wall two sides are fixedly connected with casing outer wall, the casing outer wall inner wall side is fixedly connected with sound absorbing layer, sound absorbing layer outer wall side and chassis cavity outer wall are formed with the first sound insulation chamber, the outer wall of the sound absorbing layer outer wall other side and casing outer wall is formed with the second sound insulation chamber, the surrounding of the chassis cavity bottom is fixedly connected with nylon gauze pad, the chassis cavity is internally provided with runner, the runner side is provided with the first water inlet pipe and the second water inlet pipe, the chassis cavity inner hub location is connected with water wheel axle, the water wheel axle outer surface is fixedly connected with runner, second water inlet pipe is fixedly connected with the second jet pipe close to one end of runner, the present invention relates to turbine technology fields.The impulse turbine has achieved the purpose that reduce water flow noise, can reduce the noise of impulse turbine, safeguard the environment of surrounding.
Description
Technical field
The present invention relates to turbine technology field, specially a kind of impulse turbine.
Background technique
Impulse turbine is that the free jet with kinetic energy is drawn by means of special water distributor, rushes at runner bucket,
Make runner rotation acting, to complete a kind of hydraulic prime mover that water energy is converted into mechanical energy.Impulse turbine is suitable for
The power station of high water head, small flow, the water from pressure pipeline is converted to high-speed jet by it after nozzle, tangential impact runner,
Runner rotation is pushed, so that generator amature rotation power generation is driven, it is opposite with runner with the jet stream that works in impulse turbine
The difference of position and workmanship number, can be divided into tangential wheel, inclined-jet turbine and crossflow turbine, since water flow is
Impact, so explosive force is big, the noise generated for environment is also big.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, it the present invention provides a kind of impulse turbine, provides a kind of reduction water flow and makes an uproar
The impulse turbine of sound.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of impulse turbine, including machine
Shell inner cavity, chassis cavity outer wall two sides are fixedly connected with casing outer wall, and the casing outer wall inner wall side is fixedly connected with
Sound absorbing layer, sound absorbing layer outer wall side and chassis cavity outer wall are formed with the first sound insulation chamber, the sound absorbing layer outer wall other side
It is formed with the second sound insulation chamber with the outer wall of casing outer wall, the surrounding of the chassis cavity bottom is fixedly connected with nylon gauze pad, institute
It states chassis cavity and is internally provided with runner, the runner side is provided with the first water inlet pipe and the second water inlet pipe.
Preferably, the chassis cavity inner hub location is connected with water wheel axle, and the water wheel axle outer surface is fixedly connected
There is runner.
Preferably, first water inlet pipe is fixedly connected with the first jet pipe close to one end of runner.
Preferably, second water inlet pipe is fixedly connected with the second jet pipe close to one end of runner.
Preferably, the one end of first water inlet pipe and the second water inlet pipe far from runner is fixed is communicated with water delivery general pipeline.
Preferably, reservoir and tail water slot, the nylon gauze pad outer wall side and reservoir inner wall are provided on the downside of the runner
It is flexibly connected.
Preferably, sound-absorbing coating is provided on the sound absorbing layer, the sound-absorbing coating is prepared by sound deadening coating, described
The formula of sound deadening coating are as follows: 30~50 parts of EVA resins, 5~8 parts of metal organic framework compound solution, 6~10 parts of polylactic acid.
Preferably, the sound deadening coating the preparation method comprises the following steps: each component is mixed well, then successively carry out ultrasonic vibration
Dispersion and microwave concussion dispersion are to get required sound deadening coating.
Preferably, the polylactic acid is nano silica-polylactic acid.
Preferably, the metal organic framework compound solution the preparation method comprises the following steps: metal inorganic salt is dissolved in organic molten
In agent, it is to be dissolved completely after, be added organic ligand reaction, after fully reacting, reactant is separated by solid-liquid separation, then solid is answered
It is dissolved in identical organic solvent to get required metal organic framework compound solution.
(3) beneficial effect
The present invention provides a kind of impulse turbines.Have it is following the utility model has the advantages that
1, the impulse turbine is fixedly connected with casing outer wall, casing outer wall inner wall by chassis cavity outer wall two sides
Side is fixedly connected with sound absorbing layer, and sound absorbing layer outer wall side and chassis cavity outer wall are formed with the first sound insulation chamber, sound absorbing layer outer wall
The outer wall of the other side and casing outer wall is formed with the second sound insulation chamber, and the surrounding of chassis cavity bottom is fixedly connected with nylon gauze pad,
Chassis cavity is internally provided with runner, and runner side is provided with the first water inlet pipe and the second water inlet pipe, has reached reduction water flow and has made an uproar
The purpose of sound, after water impact runner, water flow can splash everywhere, splash on the inner wall of reservoir, since reservoir inner wall is
Rigidity, it is easy to generate noise, be close to nylon gauze pad in inner wall surface, nylon gauze pad is that have many mesh, can be evacuated
Water flow reduces the sound that water flow directly impacts rigid material, and the service life of nylon gauze pad is long, and chassis cavity can make an uproar to water flow
Sound carries out preliminary isolation, and for noise transmission at sound absorbing layer inner wall, sound-absorbing layer material is that have many sound-absorption holes, to sound into
The reflection of row repeatedly, achievees the purpose that noise reduction, and wherein casing outer wall plays one in the external world and protects to sound absorbing layer, carries out to noise
The effect being further isolated, the first sound insulation chamber and the second sound insulation chamber are the mesh for using air as acoustic isolation medium and realizing auxiliary noise
, the noise of impulse turbine can be reduced, safeguards the environment of surrounding.
2, it the present invention also provides a kind of sound deadening coating that sound-absorbing effect is excellent, can further help to reduce impact type water
The noise of turbine.After sound wave enters in the hole of material, sound can be gradually converted into thermal energy, to reach the effect of sound-absorbing (noise reduction)
Fruit, material of the general acoustic absorptivity greater than 0.2 may be used as sound-absorbing material.There are a large amount of holes, holes inside this kind of material requirements
Gap is tiny and uniform in material internal difference, while requiring to be interconnected between each hole.The suction of sound deadening coating provided by the invention
Sonic system number is up to 0.88, excellent sound absorbing.
3, metal-organic framework materials have been used in sound deadening coating provided by the invention.Metal-organic framework materials are a kind of
Novel porous materials, porosity height, large specific surface area, have more research in terms of storing with transport agent at present, but without
Any application by sound-absorbing.Meanwhile metal organic framework solid material is difficult to be uniformly dispersed in a solvent, and makes after mixing
Standby sol solution (silica solution such as in the prior art) can not be attached to the body surface of required film well, attach reliability
It is low, it is difficult to directly as the component of sound deadening coating or sound deadening coating carry out using.The present invention provides several new metals are organic
Framework material and preparation method, and creatively use EVA resin as paint-based bottom, it is shaken and is divided jointly using ultrasound and microwave
Scattered mode ensure that the dispersing uniformity of metal-organic framework materials in the substrate, and the coating adhesion finally obtained is excellent,
Sound-absorbing effect is excellent.
4, nano silica-polylactic acid has been used in sound deadening coating provided by the invention.Nano silica partial size is small,
Large specific surface area is easy to reunite, if be directly appended in polylactic acid, does not simply fail to enhance its comprehensive performance, can make it instead
Performance decline.In addition, nano-silica surface has active silicone hydroxyl, is connected between adjacent hydroxyl groups with hydrogen bond, be easy to elecrtonegativity
Atom mutually adsorb so that silica surface is hydrophilic, it is difficult to be uniformly dispersed in organic phase.Therefore, it is necessary to first to nanometer two
Silica is modified.The present invention is modified nano silica while preparing polylactic acid, in SnCl2Catalysis
Under, silica, silane coupling agent, lactide and toluene react jointly, disperse in polylactic acid in guarantee silica
Uniformity in the case where, also improve the performance of polylactic acid itself.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is partial structural diagram of the present invention.
In figure: 1 chassis cavity, 2 casing outer walls, 3 sound absorbing layers, 4 first sound insulation chambers, 5 second sound insulation chambers, 6 nylon gauze pads, 7
Water wheel axle, 8 runners, 9 water delivery general pipeline, 10 first water inlet pipes, 11 first jet pipes, 12 second water inlet pipes, 13 second jet pipes, 14 tail water
Slot, 15 reservoirs.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of impulse turbine, including chassis cavity 1, machine
1 outer wall two sides of shell inner cavity are fixedly connected with casing outer wall 2, and 2 inner wall side of casing outer wall is fixedly connected with sound absorbing layer 3, sound absorbing layer 3
Outer wall side and 1 outer wall of chassis cavity are formed with the first sound insulation chamber 4, the outer wall shape of the sound absorbing layer 3 outer wall other side and casing outer wall 2
At there is the second sound insulation chamber 5, the surrounding of 1 bottom of chassis cavity is fixedly connected with nylon gauze pad 6, and chassis cavity 1, which is internally provided with, to be turned
Wheel 8,8 side of runner is provided with the first water inlet pipe 10 and the second water inlet pipe 12, has achieved the purpose that reduce water flow noise.
1 inner hub location of chassis cavity is connected with water wheel axle 7, and 7 outer surface of water wheel axle is fixedly connected with runner 8, impact
The fixed structure of the formula hydraulic turbine.
First water inlet pipe 10 is fixedly connected with the first jet pipe 11 close to one end of runner 8, enhances the impact force of water flow.
Second water inlet pipe 12 is fixedly connected with the second jet pipe 13 close to one end of runner 8, enhances the impact force of water flow.
The one end of first water inlet pipe 10 and the second water inlet pipe 12 far from runner 8 is fixed to be communicated with water delivery general pipeline 9, carries out unification
Water inlet.
Reservoir 15 and tail water slot 14 are provided on the downside of runner 8,6 outer wall side of nylon gauze pad and 15 inner wall activity of reservoir connect
It connects, forms compatible environment.
In use, water flow can splash everywhere, on the inner wall for splashing reservoir 15, due to water after water impact runner 8
15 inner wall of library is rigid, it is easy to be generated noise, is close to nylon gauze pad 6 in inner wall surface, nylon gauze pad 6 is that have many nets
Hole can evacuate water flow, the sound that water flow directly impacts rigid material be reduced, and the service life of nylon gauze pad 6 is long, in casing
Chamber 1 can carry out preliminary isolation to water flow noise, and for noise transmission at 3 inner wall of sound absorbing layer, 3 material of sound absorbing layer has many suctions
Sound hole carries out reflection repeatedly to sound, achievees the purpose that noise reduction, wherein casing outer wall 2 plays one to sound absorbing layer 3 in the external world
Protection, to the effect that noise is further isolated, the first sound insulation chamber 4 and the second sound insulation chamber 5 are to use air as sound insulation Jie
Matter realizes the purpose of auxiliary noise, can reduce the noise of impulse turbine.
Preferred scheme are as follows: use special porous sound absorbing coating as sound-absorbing material on the sound absorbing layer 3.The sound-absorbing
Coating is formed by porous sound absorbing coating preparation.The formula of the sound deadening coating are as follows: 30~50 parts of EVA resins, 5~8 parts of metals have
Machine framework compound solution, 6~10 parts of polylactic acid.
Wherein, described, metal organic framework compound solution the preparation method comprises the following steps: metal inorganic salt is dissolved in organic solvent
In, it adds organic ligand and is reacted, product is separated by solid-liquid separation after the reaction was completed, solid is again dissolved in organic solvent
In to get required metal organic framework compound solution.In embodiment provided by the invention, organic solvent is specially ethyl alcohol.
The polylactic acid is preferably nano silica-polylactic acid.The nano silica is easy to reunite, it is difficult to disperse
Uniformly, therefore when preparing nano silica-polylactic acid, also nano silica is modified simultaneously.Method particularly includes:
By 1 part of nano grade silica particles, 0.3~0.6 part of silane coupling agent (KH-550), 0.2~0.5 part of SnCl2, 25~30 part third
Lactide is dissolved in 280~320 parts of toluene, after mixing, is heated to 165 DEG C, is reacted 16h, after complete reaction, natural cooling is right
Reactant is separated by solid-liquid separation, and the solid matter of acquisition is dissolved in acetone, is prepared as 8% solution, then into the solution by
Deionized water is gradually added, the volume of the deionized water of addition is 6 times of the liquor capacity, and floccule is precipitated；It isolates cotton-shaped
Object, then be washed with deionized 3~5 times, vacuum drying is at 45 DEG C to get the nano silica-polylactic acid.
Below with reference to specific embodiment, the preparation method and effect of sound deadening coating are further explained.
Embodiment one: influence of the metal organic framework compound to sound deadening coating performance
1,5 groups of sound deadening coatings, the formula of each group sound deadening coating are as follows: 32 parts of EVA resins, 6 parts of organic bones of metal are prepared
Frame compound solution, 8 parts of polylactic acid.Each component is mixed well, the ultrasonic vibration 10min at 22kHz, then at 2450MHz
Microwave shakes 10min to get each group sound deadening coating.Using pure EVA resin, as blank control group；The organic bone of metal is not added
Frame compound solution, using 32 parts of EVA resins and 12 parts of polylactic acid, as positive controls.
Wherein, the polylactic acid the preparation method comprises the following steps: by 1 part of nano grade silica particles, 0.5 part of silane coupling agent, 0.3
Part SnCl2, 28 parts of lactides be dissolved in 300 parts of toluene, after mixing, be heated to 165 DEG C, react 16h, after complete reaction, from
It is so cooling, reactant is separated by solid-liquid separation, the solid matter of acquisition is dissolved in acetone, is prepared as 8% solution, then to this
Deionized water is gradually added into solution, the volume of the deionized water of addition is 6 times of the liquor capacity, and floccule is precipitated；Point
Floccule is separated out, then is washed with deionized 3 times, vacuum drying is at 45 DEG C to get the poly- cream of the nano silica-
Acid.
The specific preparation parameter of the metal organic framework compound solution is as shown in table 1.The metal inorganic salt is molten
In ethyl alcohol, it is to be dissolved completely after, the organic ligand is added, is warming up to required temperature, ultrasonic vibration reaction, fully reacting
Afterwards, reactant is separated by solid-liquid separation, then solid redissolution is molten to get required metal organic framework compound in ethyl alcohol
Liquid；When redissolution, the quality of ethyl alcohol is 10 times that reaction generates solid masses.
1 design parameter of table shows table
2, each group coating is prepared as to the coating of 0.2mm thickness using czochralski method, is absorbed sound after dry using Reverberation room method detection
Coefficient, general acoustic absorptivity > 0.2 are regarded as sound-absorbing material.In addition each group coating is applied to 5cm × 5cm × 0.3cm respectively
Steel plate on, at room temperature dry 2h, formed 0.2mm thickness coating.Each group steel plate is soaked in 0.5h in water, it is apparent to take out observation
Character.
Each group effect is as shown in table 2.
2 each group acoustic absorptivity of table is shown
| Group | Acoustic absorptivity | Waterproofness |
| Group 1 | 0.88 | Bubble-free, peeling, cracking |
| Group 2 | 0.62 | Bubble-free, peeling, cracking |
| Group 3 | 0.43 | Bubble-free, peeling, cracking |
| Group 4 | 0.54 | Bubble-free, peeling, cracking |
| Group 5 | 0.59 | Bubble-free, peeling, cracking |
| Positive controls | 0.32 | Bubble-free, peeling, cracking |
| Blank control group | 0.13 | Bubble-free, peeling, cracking |
Embodiment two: influence of the polylactic acid to sound deadening coating performance
1, in addition to the preparation of polylactic acid, 12 groups of sound deadening coatings are prepared using one group 1 of embodiment of method, wherein each group is inhaled
Polylactic acid prepares as shown in table 3 in sound coating, and the numerical value in table refers to the parts by weight of the component.Using pure EVA resin, as
Blank control group；Polylactic acid is not added, using 32 parts of EVA resins and 10 parts of metal organic framework compound solution, as the positive
Control group.
3 design parameter of table shows table
2, effect detection is carried out to each group by the method for embodiment one, the results are shown in Table 4.
4 effect of table is shown
| Group | Acoustic absorptivity | Waterproofness |
| Group 1 | 0.33 | Bubble-free, peeling, cracking |
| Group 2 | 0.87 | Bubble-free, peeling, cracking |
| Group 3 | 0.65 | Bubble-free, peeling, cracking |
| Group 4 | 0.61 | Bubble-free, peeling, cracking |
| Group 5 | 0.43 | Bubble-free, peeling, cracking |
| Group 6 | 0.62 | Bubble-free, peeling, cracking |
| Group 7 | 0.68 | Bubble-free, peeling, cracking |
| Group 8 | 0.31 | Bubble-free, peeling, cracking |
| Group 9 | 0.69 | Bubble-free, peeling, cracking |
| Group 10 | 0.72 | Bubble-free, peeling, cracking |
| Group 11 | 0.73 | Bubble-free, peeling, cracking |
| Group 12 | 0.69 | Bubble-free, peeling, cracking |
| Positive controls | 0.35 | Bubble-free, peeling, cracking |
| Blank control group | 0.12 | Bubble-free, peeling, cracking |
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of impulse turbine, including chassis cavity (1), it is characterised in that: chassis cavity (1) the outer wall two sides are fixed
It is connected with casing outer wall (2), casing outer wall (2) the inner wall side is fixedly connected with sound absorbing layer (3), and the sound absorbing layer (3) is outside
Wall side and chassis cavity (1) outer wall are formed with the first sound insulation chamber (4), sound absorbing layer (3) the outer wall other side and casing outer wall
(2) outer wall is formed with the second sound insulation chamber (5), and the surrounding of chassis cavity (1) bottom is fixedly connected with nylon gauze pad (6),
The chassis cavity (1) is internally provided with runner (8), runner (8) side be provided with the first water inlet pipe (10) and second into
Water pipe (12).
2. a kind of impulse turbine according to claim 1, it is characterised in that: chassis cavity (1) inside center
Position is connected with water wheel axle (7), and water wheel axle (7) outer surface is fixedly connected with runner (8).
3. a kind of impulse turbine according to claim 1, it is characterised in that: first water inlet pipe (10) is close to be turned
One end of wheel (8) is fixedly connected with the first jet pipe (11).
4. a kind of impulse turbine according to claim 1, it is characterised in that: second water inlet pipe (12) is close to be turned
One end of wheel (8) is fixedly connected with the second jet pipe (13).
5. a kind of impulse turbine according to claim 1, it is characterised in that: first water inlet pipe (10) and second
Water inlet pipe (12) is communicated with water delivery general pipeline (9) far from one end fixation of runner (8).
6. a kind of impulse turbine according to claim 1, it is characterised in that: be provided with water on the downside of the runner (8)
Library (15) and tail water slot (14), nylon gauze pad (6) the outer wall side are flexibly connected with reservoir (15) inner wall.
7. a kind of impulse turbine according to claim 1, it is characterised in that: be provided with suction on the sound absorbing layer (3)
Sound coating, the sound-absorbing coating are prepared by sound deadening coating, the formula of the sound deadening coating are as follows: 30~50 parts of EVA resins, 5
~8 parts of metal organic framework compound solution, 6~10 parts of polylactic acid.
8. a kind of impulse turbine according to claim 7, it is characterised in that: the preparation method of the sound deadening coating
Are as follows: each component is mixed well, carries out ultrasonic vibration dispersion and microwave concussion dispersion successively then to get required sound deadening coating.
9. a kind of impulse turbine according to claim 7, it is characterised in that: the polylactic acid is nanometer titanium dioxide
Silicon-polylactic acid.
10. a kind of impulse turbine according to claim 7, it is characterised in that: the metal organic framework compound
Solution the preparation method comprises the following steps: metal inorganic salt is dissolved in organic solvent, it is to be dissolved completely after, organic ligand reaction is added, instead
After answering completely, reactant is separated by solid-liquid separation, then solid redissolution is had in identical organic solvent to get required metal
Machine framework compound solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910178392.3A CN109882336B (en) | 2019-03-11 | 2019-03-11 | Impulse turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910178392.3A CN109882336B (en) | 2019-03-11 | 2019-03-11 | Impulse turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882336A true CN109882336A (en) | 2019-06-14 |
| CN109882336B CN109882336B (en) | 2020-11-27 |
Family
ID=66931542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910178392.3A Active CN109882336B (en) | 2019-03-11 | 2019-03-11 | Impulse turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109882336B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2256933Y (en) * | 1995-03-23 | 1997-06-25 | 北京当代复合材料有限公司 | Silencer casing |
| CN2383036Y (en) * | 1999-06-17 | 2000-06-14 | 淄博电力实业总公司 | Water showering silencer |
| CN101379068A (en) * | 2006-02-10 | 2009-03-04 | 巴斯夫欧洲公司 | Process for preparing porous organic framework materials |
| CN101519526A (en) * | 2008-10-10 | 2009-09-02 | 兰州理工大学 | Method for preparing polylactic acid/nanometer silicon dioxide composite material |
| CN201963451U (en) * | 2011-02-28 | 2011-09-07 | 重庆云河水电股份有限公司 | Negative-pressure breaking device for base of impacting type water turbine |
| CN202360284U (en) * | 2011-10-29 | 2012-08-01 | 湖南零陵恒远发电设备有限公司 | Double-layer enclosure for impulse turbine |
| US20140213832A1 (en) * | 2013-01-31 | 2014-07-31 | Basf Se | Stable Spherical, Porous Metal-Organic Framework Shaped Bodies For Gas Storage And Gas Separation |
| CN106875934A (en) * | 2017-03-30 | 2017-06-20 | 歌尔股份有限公司 | Metal organic frame sound-absorbing part and sound-producing device module |
| WO2018036997A1 (en) * | 2016-08-23 | 2018-03-01 | Basf Se | Composite materials |
-
2019
- 2019-03-11 CN CN201910178392.3A patent/CN109882336B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2256933Y (en) * | 1995-03-23 | 1997-06-25 | 北京当代复合材料有限公司 | Silencer casing |
| CN2383036Y (en) * | 1999-06-17 | 2000-06-14 | 淄博电力实业总公司 | Water showering silencer |
| CN101379068A (en) * | 2006-02-10 | 2009-03-04 | 巴斯夫欧洲公司 | Process for preparing porous organic framework materials |
| CN101519526A (en) * | 2008-10-10 | 2009-09-02 | 兰州理工大学 | Method for preparing polylactic acid/nanometer silicon dioxide composite material |
| CN201963451U (en) * | 2011-02-28 | 2011-09-07 | 重庆云河水电股份有限公司 | Negative-pressure breaking device for base of impacting type water turbine |
| CN202360284U (en) * | 2011-10-29 | 2012-08-01 | 湖南零陵恒远发电设备有限公司 | Double-layer enclosure for impulse turbine |
| US20140213832A1 (en) * | 2013-01-31 | 2014-07-31 | Basf Se | Stable Spherical, Porous Metal-Organic Framework Shaped Bodies For Gas Storage And Gas Separation |
| WO2018036997A1 (en) * | 2016-08-23 | 2018-03-01 | Basf Se | Composite materials |
| CN106875934A (en) * | 2017-03-30 | 2017-06-20 | 歌尔股份有限公司 | Metal organic frame sound-absorbing part and sound-producing device module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109882336B (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201099927Y (en) | Aerating and sound-deadening wall | |
| CN109882336A (en) | A kind of impulse turbine | |
| CN107237414A (en) | A kind of microporous aluminosilicates fiber sandwich sound-absorbing composite board | |
| CN108035791A (en) | A kind of wind scooper, engine and power-equipment | |
| CN212792185U (en) | Special ultrasonic heating cleaning equipment in regeneration denitration catalyst laboratory | |
| CN210738947U (en) | Low-noise and large-air-volume ventilation equipment | |
| CN212360095U (en) | Noise elimination structure for air compressor | |
| CN210304841U (en) | Ultrasonic cleaner convenient to cooling just has function of making an uproar of falling | |
| CN111981616A (en) | Low-vibration and low-noise fresh air handling unit based on particle damping | |
| CN217174424U (en) | Tunnel noise reduction device | |
| CN206738203U (en) | A kind of silent ventilator based on fan unit integrated array structure | |
| CN203278524U (en) | Energy-saving and environment-friendly generator set | |
| CN207526572U (en) | A kind of wind scooper, engine and power-equipment | |
| CN207212617U (en) | A kind of oilless vacuum pump muffler | |
| CN107057010B (en) | A method of doping core-shell structure copolymer microballoon prepares sound-absorbing material | |
| CN218062590U (en) | Energy-saving series vacuum pump device with vibration and noise reduction function | |
| CN106955061B (en) | Dust catcher shock-damping structure | |
| CN217630786U (en) | Brick-like vibration-damping noise-reducing structural unit | |
| CN104868337A (en) | Micro-vacuum sealant filling method for automobile wire harness | |
| CN219178324U (en) | Cooling tower fan of low noise | |
| CN211314494U (en) | Noise reduction device of vacuum pump | |
| CN210317774U (en) | Centrifugal pump device for conveying trimethylolethane | |
| CN108347194A (en) | A kind of miniature fluid energy collector based on phonon crystal resonant cavity | |
| CN207268186U (en) | A kind of generating set exhaust gas cleaner | |
| CN218030383U (en) | Sound absorption and moisture absorption noise reduction automobile engine timing cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |