CN113915041B - Mixed nozzle for impulse turbine - Google Patents
Mixed nozzle for impulse turbine Download PDFInfo
- Publication number
- CN113915041B CN113915041B CN202111211370.6A CN202111211370A CN113915041B CN 113915041 B CN113915041 B CN 113915041B CN 202111211370 A CN202111211370 A CN 202111211370A CN 113915041 B CN113915041 B CN 113915041B
- Authority
- CN
- China
- Prior art keywords
- casing
- nozzle
- connecting block
- impulse turbine
- underframe
- 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.)
- Active
Links
Classifications
-
- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
- F03B1/04—Nozzles; Nozzle-carrying members
-
- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
-
- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/20—Controlling by varying liquid flow specially adapted for turbines with jets of high-velocity liquid impinging on bladed or like rotors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The application provides a mixed nozzle for an impulse turbine, which relates to the technical field of water turbines and comprises a shell and a bottom frame, wherein an inner cavity is formed in the shell, a communication cavity is formed in the shell, the communication cavity is communicated with the inner cavity, a connecting pipe is fixedly arranged on the outer side of the surface of the shell, an outer nozzle is fixedly arranged on one side of the shell, a connecting frame is fixedly arranged on the outer side of the surface of the shell, a hydraulic rod is fixedly arranged between the connecting frames, a spray needle is fixedly arranged at one end of the hydraulic rod, and the spray needle is in sliding connection with the inner cavity. According to the application, by arranging the communication cavity, a worker can connect four groups of water supply pipelines with the connecting pipes, so that four groups of weaker water flows can enter the inner cavity through the communication cavity to be mixed, and then are sprayed out through the gap between the spray needle and the outer nozzle to impact the runner bucket, so that a better impact spraying using effect is achieved.
Description
Technical Field
The application relates to the technical field of water turbines, in particular to a mixed nozzle for an impulse water turbine.
Background
The impulse turbine can spray out the water flow with kinetic energy through the nozzle, wash to the runner bucket, make the runner rotate and do work, thus accomplish a kind of hydraulic power prime mover that converts the hydroenergy into mechanical energy, and in the nozzle use of current impulse turbine, because the nozzle is mostly sprayed through single pipeline water supply, when single water flow is weaker, when the nozzle sprayed single water flow, it is weaker often that its spraying impact force, be difficult to reach better result of use.
Disclosure of Invention
The application aims to solve the defects in the prior art and provides a hybrid nozzle for an impulse turbine.
In order to achieve the above purpose, the present application adopts the following technical scheme: the utility model provides a hybrid nozzle for impulse turbine, includes casing and underframe, the inner chamber has been seted up to the inside of casing, the intercommunication chamber has been seted up in the outside of inner chamber to the inside of casing, the intercommunication chamber is linked together with the inner chamber, the surface of casing is located the outside in intercommunication chamber and has been equipped with the connecting pipe admittedly, the quantity of connecting pipe is four sets of, one side fixed mounting of casing has outer nozzle, the surface of casing is located the outside of inner chamber and has been equipped with the link admittedly, fixed mounting has the hydraulic stem between the link, the one end fixed mounting of hydraulic stem has the needle, needle and inner chamber sliding connection, be provided with adjusting structure between casing and the underframe, adjusting structure include the backup pad, it is connected with the backup pad to rotate between casing and the underframe, the inside of underframe is equipped with electric telescopic handle admittedly, the connecting block is installed to electric telescopic handle's one end, rotate between connecting block and the casing and be connected with the straight board, the surface of underframe is provided with fixed knot constructs, fixed knot constructs including the sleeve, the surface of underframe has the round hole, the surface of underframe has the sleeve, the sleeve is located the inside of sleeve and is equipped with fixed mounting.
In order to facilitate the replacement of the nozzles, the improvement of the application is that the outer nozzles are fixedly connected with the shell through the fixing bolts, the number of the fixing bolts is four groups, and the four groups of the fixing bolts are circumferentially distributed.
In order to achieve a better sealing effect, the application is improved in that the surface of the spray needle is fixedly provided with a rubber ring.
In order to stabilize the movement of the spray needle, the application is improved in that the surface of the connecting frame is connected with a sliding rod in a sliding way, and the sliding rod is fixedly connected with the spray needle.
In order to ensure that the connecting block moves stably, the application is improved in that a straight rod is fixedly arranged in the bottom frame, and the connecting block is connected with the straight rod in a sliding way.
In order to make the bottom frame more stable, the application is improved in that rubber pads are fixedly arranged at the bottom of the bottom frame and distributed at equal intervals.
Compared with the prior art, the application has the advantages and positive effects that,
1. according to the application, by arranging the communication cavity, a worker can connect four groups of water supply pipelines with the connecting pipes, so that four groups of weaker water flows can enter the inner cavity through the communication cavity to be mixed, and then are sprayed out through the gap between the spray needle and the outer nozzle to impact the runner bucket, so that a better impact spraying using effect is achieved.
2. According to the application, by arranging the adjusting structure, in the using process, a worker can control the electric telescopic rod to extend, so that the connecting block drives the straight plate to rotate, the angle of the straight plate to the shell is adjusted, and the impact direction of water flow is adjusted, so that a better impact using effect is achieved.
3. According to the application, by arranging the fixing structure, a worker can screw the mounting bolt into the press hole to fix the bottom frame, and in the mounting process, the sleeve can limit the mounting bolt, so that the mounting bolt is vertically aligned with the mounting hole, and the worker can conveniently perform mounting operation.
Drawings
Fig. 1 is a schematic diagram showing the overall structure of a hybrid nozzle for an impulse turbine according to the present application;
fig. 2 is a schematic rear view of a hybrid nozzle for an impulse turbine according to the present application;
FIG. 3 is a schematic view showing the structure of the mixing nozzle for impulse turbine shown in FIG. 2A;
fig. 4 is a schematic bottom view of a hybrid nozzle for an impulse turbine according to the present application;
fig. 5 is a partial cross-sectional view showing a front view of a hybrid nozzle for an impulse turbine according to the present application;
fig. 6 is a partial cross-sectional view showing a rear view of a hybrid nozzle for an impulse turbine according to the present application.
Legend description:
1. a housing; 2. a bottom frame; 3. an inner cavity; 4. a communication chamber; 5. a connecting pipe; 6. an outer nozzle; 7. a connecting frame; 8. a hydraulic rod; 9. a spray needle; 10. a fixing bolt; 11. a rubber ring; 12. a slide bar; 13. a support plate; 14. an electric telescopic rod; 15. a connecting block; 16. a straight plate; 17. a straight rod; 18. a sleeve; 19. installing a bolt; 20. and a limiting block.
Description of the embodiments
In order that the above objects, features and advantages of the application will be more clearly understood, a further description of the application will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, in the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1-6, the application provides a hybrid nozzle for an impulse turbine, which comprises a shell 1 and a bottom frame 2, wherein an inner cavity 3 is formed in the shell 1, a communicating cavity 4 is formed in the inner side of the inner cavity 3, the communicating cavity 4 is communicated with the inner cavity 3, connecting pipes 5 are fixedly arranged on the outer side of the communicating cavity 4 on the surface of the shell 1, the number of the connecting pipes 5 is four, an outer nozzle 6 is fixedly arranged on one side of the shell 1, a connecting frame 7 is fixedly arranged on the outer side of the surface of the shell 1, a hydraulic rod 8 is fixedly arranged between the connecting frames 7, a spray needle 9 is fixedly arranged at one end of the hydraulic rod 8, the spray needle 9 is in sliding connection with the inner cavity 3, during use, four groups of water supply pipelines are connected with the connecting pipes 5, so that water can enter the inner cavity 3 through the communicating cavity 4 to be mixed, then spray through gaps between the spray needle 9 and the outer nozzle 6, impact a runner water bucket is impacted, and workers can control the hydraulic rod 8 to push the spray needle 9 to move back and forth in the inner cavity 3, thereby adjusting the size of the gap between the spray needle 9 and the outer nozzle 6, the water flow rate can be better adjusted, and the water flow can reach the effect of spraying the spray water flow can be prevented from being sprayed out by the spray nozzle 6.
The fixed surface of nozzle 9 installs rubber ring 11, rubber ring 11 can play sealed effect, prevent that the rivers from flowing out through inner chamber 3, outer nozzle 6 passes through fixing bolt 10 and casing 1 fixed connection, the quantity of fixing bolt 10 is four sets altogether, four sets of fixing bolt 10 are circumference distribution, when using, the staff can unscrew fixing bolt 10 in the work, then take off outer nozzle 6, so that the staff can change the nozzle of different shapes, thereby reach different injection impact effect, the surface sliding connection of link 7 has slide bar 12, slide bar 12 and nozzle 9 fixed connection, in-process slide bar 12 at nozzle 9 removal can be along link 7 round trip sliding, restrict the removal of nozzle 9, make nozzle 9 can stable removal.
Be provided with regulation structure between casing 1 and the underframe 2, regulation structure includes backup pad 13, rotate between casing 1 and the underframe 2 and be connected with backup pad 13, the inside of underframe 2 is fixed with electric telescopic handle 14, connecting block 15 is installed to electric telescopic handle 14's one end, rotate between connecting block 15 and the casing 1 and be connected with straight board 16, the inside fixed mounting of underframe 2 has straight-bar 17, connecting block 15 and straight-bar 17 sliding connection, in the use, the staff can control electric telescopic handle 14 extension, make electric telescopic handle 14 promote connecting block 15 and remove, in the in-process that connecting block 15 removed, straight-bar 17 can restrict the slip of connecting block 15, make connecting block 15 remove stably, thereby make connecting block 15 drive straight board 16 and rotate, make straight board 16 adjust the angle of casing 1, adjust the impact direction of rivers, in order to reach better impact effect.
The fixed knot constructs on the surface of underframe 2, fixed knot constructs including sleeve 18, the round hole has been seted up on the surface of underframe 2, the sleeve 18 has been fixed in the outside that the surface of underframe 2 is located the round hole, the inside fixed mounting of sleeve 18 has mounting bolt 19, stopper 20 has been fixed in the surface of sleeve 18, the bottom fixed mounting of underframe 2 has the rubber pad, the rubber pad is equidistant distribution, when using, can be through seting up the mounting hole in the inside suitable position department of impulse turbine, then laminate the mounting hole place with underframe 2, can screw in the mounting hole inside with mounting bolt 19, at the in-process of screwing up mounting bolt 19, sleeve 18 can restrict mounting bolt 19, make mounting bolt 19 vertically aim at with the mounting hole, so that the staff installs, stopper 20 can restrict mounting bolt 19 at the in-process that underframe 2 removed, prevent that mounting bolt 19 from losing, and the rubber pad can fill the gap between underframe 2 and the mounting position, make underframe 2 can be more stable in the use.
Working principle: when in use, the mounting bolt 19 can be screwed into the mounting hole by arranging the mounting hole at the proper position inside the impulse turbine and attaching the bottom frame 2 to the mounting hole, the sleeve 18 can limit the mounting bolt 19 in the process of screwing the mounting bolt 19, the mounting bolt 19 is vertically aligned with the mounting hole so as to facilitate the installation of workers, the limiting block 20 can limit the mounting bolt 19 in the moving process of the bottom frame 2, the mounting bolt 19 is prevented from being lost, the rubber pad can fill the gap between the bottom frame 2 and the mounting position, the bottom frame 2 can be more stable in the using process, the four groups of water supply pipelines can be connected with the connecting pipe 5, water flow can enter the inner cavity 3 through the communicating cavity 4 to be mixed, then the water flow is sprayed out through the gap between the spray needle 9 and the outer nozzle 6 to impact the rotating wheel bucket, the staff can control the hydraulic rod 8 to push the needle 9 to move back and forth in the inner cavity 3, the sliding rod 12 can slide back and forth along the connecting frame 7 in the moving process of the needle 9, the movement of the needle 9 is limited, the needle 9 can move stably, the size of a gap between the needle 9 and the outer nozzle 6 is adjusted, the water yield and the water speed of water flow are adjusted, so that a better impact effect is achieved, when the needle 9 is attached to the outer nozzle 6, the needle 9 can block the outer nozzle 6, so that the water flow is limited, at the moment, the rubber ring 11 can play a sealing effect, prevent water flow from flowing out through the inner cavity 3, and when in use, the staff can unscrew the fixing bolt 10, then take down the outer nozzle 6, so that the staff can replace nozzles with different shapes, thereby achieving different injection impact effects, and in the use, the staff can control electric telescopic handle 14 to extend, makes electric telescopic handle 14 promote connecting block 15 and removes, and at the in-process that connecting block 15 removed, straight-bar 17 can restrict the slip of connecting block 15, makes connecting block 15 remove stably to make connecting block 15 drive straight board 16 and rotate, make straight board 16 adjust the angle of casing 1, adjust the impact direction of rivers, so as to reach better impact effect.
The present application is not limited to the above embodiments, and any equivalent embodiments which can be changed or modified by the technical disclosure described above can be applied to other fields, but any simple modification, equivalent changes and modification to the above embodiments according to the technical matter of the present application will still fall within the protection scope of the technical disclosure.
Claims (6)
1. The utility model provides a hybrid nozzle for impulse turbine, includes casing (1) and underframe (2), its characterized in that: the utility model discloses a motor-driven telescopic connecting block, including casing (1), connecting block and connecting block, inner chamber (3) has been seted up to the inside of casing (1), intercommunication chamber (4) have been seted up in the outside of inner chamber (3) to the inside of casing (1), intercommunication chamber (4) are linked together with inner chamber (3), the surface of casing (1) is located the outside of intercommunication chamber (4) and is fixed with connecting pipe (5), the quantity of connecting pipe (5) is four sets of, one side fixed mounting of casing (1) has outer nozzle (6), the surface of casing (1) is located the outside of inner chamber (3) and is fixed with link (7), fixed mounting has hydraulic stem (8) between link (7), the one end fixed mounting of hydraulic stem (8) has spray needle (9), spray needle (9) and inner chamber (3) sliding connection, be provided with adjusting structure between casing (1) and the underframe (2), adjusting structure include backup pad (13) are rotated between casing (1) and underframe (2), the inside of underframe (2) is fixed with electric motor-driven telescopic connecting block (14), electric motor-driven telescopic connecting block (14) is fixed with connecting block (15) between the connecting block (15), the fixing structure comprises a sleeve (18), a round hole is formed in the surface of the bottom frame (2), the sleeve (18) is fixedly arranged on the outer side of the round hole on the surface of the bottom frame (2), a mounting bolt (19) is fixedly arranged in the sleeve (18), and a limiting block (20) is fixedly arranged on the surface of the sleeve (18).
2. A hybrid nozzle for an impulse turbine as claimed in claim 1, characterized in, that: the outer nozzle (6) is fixedly connected with the shell (1) through fixing bolts (10), the number of the fixing bolts (10) is four, and the four fixing bolts (10) are circumferentially distributed.
3. A hybrid nozzle for an impulse turbine as claimed in claim 1, characterized in, that: the surface of the spray needle (9) is fixedly provided with a rubber ring (11).
4. A hybrid nozzle for an impulse turbine as claimed in claim 1, characterized in, that: the surface of the connecting frame (7) is connected with a sliding rod (12) in a sliding manner, and the sliding rod (12) is fixedly connected with the spray needle (9).
5. A hybrid nozzle for an impulse turbine as claimed in claim 1, characterized in, that: the inside of underframe (2) fixed mounting has straight-bar (17), connecting block (15) and straight-bar (17) sliding connection.
6. A hybrid nozzle for an impulse turbine as claimed in claim 1, characterized in, that: the bottom of the bottom frame (2) is fixedly provided with rubber pads which are distributed at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111211370.6A CN113915041B (en) | 2021-10-18 | 2021-10-18 | Mixed nozzle for impulse turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111211370.6A CN113915041B (en) | 2021-10-18 | 2021-10-18 | Mixed nozzle for impulse turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113915041A CN113915041A (en) | 2022-01-11 |
| CN113915041B true CN113915041B (en) | 2023-08-18 |
Family
ID=79241157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111211370.6A Active CN113915041B (en) | 2021-10-18 | 2021-10-18 | Mixed nozzle for impulse turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113915041B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES250735A1 (en) * | 1958-07-14 | 1959-12-01 | Boving & Co Ltd | Improvements in and relating to the mounting and control of needles in pelton impulse hydraulic turbines |
| JPH05195939A (en) * | 1992-01-16 | 1993-08-06 | Fuji Electric Co Ltd | Motor-driven nozzle operating device for pelton turbine |
| CN201963452U (en) * | 2011-04-13 | 2011-09-07 | 重庆云河水电股份有限公司 | Nozzle of impulse water turbine |
| CN204783418U (en) * | 2015-05-26 | 2015-11-18 | 王铮 | Pelton turbine equipment |
| CN108119283A (en) * | 2016-11-29 | 2018-06-05 | 沈阳格泰水电设备有限公司 | A kind of new impulse turbine nozzle arrangements |
| CN109058021A (en) * | 2018-08-08 | 2018-12-21 | 湖南云箭集团有限公司 | A kind of impulse turbine |
| CN209385275U (en) * | 2019-01-17 | 2019-09-13 | 洪雅力达水力发电设备有限责任公司 | A kind of nozzle of impulse water turbine |
| CN111425327A (en) * | 2020-04-20 | 2020-07-17 | 东方电气集团东方电机有限公司 | Built-in coaxial nozzle of motor of impulse type model water turbine |
-
2021
- 2021-10-18 CN CN202111211370.6A patent/CN113915041B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES250735A1 (en) * | 1958-07-14 | 1959-12-01 | Boving & Co Ltd | Improvements in and relating to the mounting and control of needles in pelton impulse hydraulic turbines |
| JPH05195939A (en) * | 1992-01-16 | 1993-08-06 | Fuji Electric Co Ltd | Motor-driven nozzle operating device for pelton turbine |
| CN201963452U (en) * | 2011-04-13 | 2011-09-07 | 重庆云河水电股份有限公司 | Nozzle of impulse water turbine |
| CN204783418U (en) * | 2015-05-26 | 2015-11-18 | 王铮 | Pelton turbine equipment |
| CN108119283A (en) * | 2016-11-29 | 2018-06-05 | 沈阳格泰水电设备有限公司 | A kind of new impulse turbine nozzle arrangements |
| CN109058021A (en) * | 2018-08-08 | 2018-12-21 | 湖南云箭集团有限公司 | A kind of impulse turbine |
| CN209385275U (en) * | 2019-01-17 | 2019-09-13 | 洪雅力达水力发电设备有限责任公司 | A kind of nozzle of impulse water turbine |
| CN111425327A (en) * | 2020-04-20 | 2020-07-17 | 东方电气集团东方电机有限公司 | Built-in coaxial nozzle of motor of impulse type model water turbine |
Non-Patent Citations (1)
| Title |
|---|
| 黄兰溪二级电站冲击式水轮机技改总结;黄邦东;;水利科技(第04期);68-70 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113915041A (en) | 2022-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113915041B (en) | Mixed nozzle for impulse turbine | |
| CN212309936U (en) | Positioning punching sheet coating device applied to large hydroelectric generator | |
| CN203460067U (en) | Automatic centering frame for hydraulic remote cutting device | |
| WO2018035953A1 (en) | Device for adding or replacing impulse turbine outer nozzle opening designed for optimized hydraulic power and application method of same | |
| CN102524027B (en) | Large water-driven electrically-controlled micro-spray irrigation unit | |
| CN214467730U (en) | Monitoring device of thermal control automation equipment of thermal power plant | |
| CN216498285U (en) | Dust fall equipment is used in hydraulic engineering construction place | |
| CN204900143U (en) | Get ready and hit vertical high -efficient hydroelectric set to one side | |
| CN205682041U (en) | A kind of greenhouse vegetable irrigation rig | |
| CN213662914U (en) | Farmland irrigation device for hydraulic engineering | |
| CN204900144U (en) | Get ready and strike vertical high -efficient hydroelectric set | |
| CN204223684U (en) | A kind of rotor sword adjustable rotary seal valve | |
| CN217813586U (en) | Spraying device for coal mine | |
| CN201526335U (en) | Adjustable rotary spraying device | |
| CN109989750B (en) | High-pressure water jet spraying device of roadheader | |
| CN216811764U (en) | Multifunctional spraying device outside coal mining machine | |
| CN102128053A (en) | Direct-drive air pressure turbine | |
| CN217682113U (en) | Deicing device for blades of wind driven generator | |
| CN210858720U (en) | Coal-winning machine secondary negative pressure dust device | |
| CN215736219U (en) | A sprinkling irrigation equipment for tea planting | |
| CN212396232U (en) | Safe spray dust removal device for coal conveying of thermal power plant | |
| CN216755852U (en) | Rotary nozzle for spraying pile | |
| CN217107287U (en) | Large and medium-sized impact type hydroelectric generating set structure without water guide bearing of turbine shaft | |
| CN221306447U (en) | Novel ecological restoration of soil device | |
| CN219604255U (en) | Novel railway roadbed maintenance device |
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 |