CN216381685U - Paddle control device of Kaplan turbine and Kaplan turbine - Google Patents
Paddle control device of Kaplan turbine and Kaplan turbine Download PDFInfo
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- CN216381685U CN216381685U CN202122472605.9U CN202122472605U CN216381685U CN 216381685 U CN216381685 U CN 216381685U CN 202122472605 U CN202122472605 U CN 202122472605U CN 216381685 U CN216381685 U CN 216381685U
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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
- Y02E10/20—Hydro energy
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a paddle control device of a Kaplan turbine and the Kaplan turbine with the same, belonging to the technical field of turbine manufacture, comprising a generator main shaft and a turbine main shaft which are fixedly connected up and down, and: the oil receiver assembly is arranged on a main shaft of the generator; the servomotor assembly is arranged in the generator main shaft and the water turbine main shaft, is positioned below the oil-supply head assembly and is communicated with an oil way of the oil-supply head assembly; the oil-supply head control assembly is arranged on the oil-supply head assembly and comprises a wireless communication control box, a direct-current high-pressure oil pump unit and a reversing valve; the wireless communication control box is used for receiving an external control signal and sending a corresponding operation signal according to the received external control signal; the direct-current high-pressure oil pump unit and the reversing valve are in signal connection with the wireless communication control box. The utility model has simple and compact structure, solves the problems of easy abrasion and oil leakage of the oil-supply head of the hydraulic turbine in the prior art, and has high operation efficiency and good safety.
Description
Technical Field
The utility model relates to the technical field of water turbine manufacturing, in particular to a paddle control device of a Kaplan turbine; the utility model also relates to a Kaplan turbine with the blade control device.
Background
At present, the rotary motion of opening and closing the runner blades of a Kaplan turbine is realized by driving a blade transmission mechanism by the axial reciprocating motion of a piston of a runner servomotor. The pressure oil pushing the servomotor piston to move is regulated by an external oil pressure device through a main pressure distributing valve of a speed regulator and then enters a fixed oil pipe and an operation oil pipe which is arranged in the main shaft and synchronously rotates with the main shaft to reach the opening and closing sides of the piston. The pressure oil enters the rotating operation oil pipe from the fixed oil pipe and needs to be realized by an oil supply head. The oil-supply head is an important part of the water turbine, and the main function of the oil-supply head is to introduce pressure oil of the speed regulating system into a rotating operation oil pipe from a fixed oil pipe and transmit the pressure oil to the paddle servomotor to timely and effectively adjust the opening of the paddles, so that the unit always runs under the cooperative working condition.
In a traditional oil receiver, a floating tile is arranged between a static oil receiver body and an operating oil pipe which rotates and moves axially, and the floating tile mainly plays a role in sealing and guiding. Therefore, whether the floating tile works normally or not directly influences the stability of the speed regulating system and the safety of unit operation.
However, in actual operation, with the increase of the operation time of the unit, or the increase of the capacity and the size of the unit and the improvement of the operation oil pressure, the floating tile in sliding operation is difficult to establish a stable fluid dynamic pressure oil film with the rotating shaft, so that the floating tile cannot be avoided to be in a mixed friction state, namely boundary friction or dry friction can occur to generate abrasion, further to cause the accidents that an oil receiver leaks oil, an oil thrower is increased or even more serious, and the safe operation of the unit is seriously threatened.
In order to solve the above problems, it has become a research focus and a common technical means in the field to improve the structure of the floating tile or to research the manufacturing of the floating tile by using a material with a smaller friction coefficient.
SUMMERY OF THE UTILITY MODEL
The utility model breaks away from the existing concept constraint that the floating tile is taken as a research object, and the propeller turbine blade control device is brand-new designed from the whole structure, so that the utility model aims to provide the simpler and more efficient propeller turbine blade control device and solve the problems that an oil receiver of a water turbine is easy to wear and leak oil in the prior art.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a paddle of a Kaplan turbine controls device, includes generator main shaft and fixed connection in the hydraulic turbine main shaft of generator main shaft lower extreme still includes:
the oil receiver assembly is arranged on the main shaft of the generator and is used for storing and conveying pressure oil;
the servomotor assembly is arranged in the generator main shaft and the water turbine main shaft, is positioned below the oil-supply head assembly and is communicated with an oil way of the oil-supply head assembly;
the oil-supply head control assembly is arranged on the oil-supply head assembly and comprises a wireless communication control box, a direct-current high-pressure oil pump unit and a reversing valve; the wireless communication control box is used for receiving an external control signal and sending a corresponding operation signal according to the received external control signal; the direct-current high-pressure oil pump unit and the reversing valve are in signal connection with the wireless communication control box.
Optionally, the oil supply head assembly includes:
a base mounted on the generator main shaft;
an oil tank mounted on the base for storing pressure oil;
at least two high-pressure hoses; one end of the high-pressure hose is connected with the oil outlet of the oil tank, and the other end of the high-pressure hose is connected with the servomotor assembly.
Optionally, the oil receiver assembly further comprises an outer protection cover, wherein the outer protection cover is arranged above the base and used for covering protection of the oil tank, the high-pressure hose and the oil receiver control assembly.
Optionally, the servomotor assembly includes:
an oil chamber formed by a connection portion of the generator main shaft and the turbine main shaft;
the piston rod is arranged in the generator main shaft in a penetrating manner and is in sealed sliding connection with the inner wall of the generator main shaft;
the piston is fixedly arranged at the bottom end of the piston rod, is positioned in the oil cavity and is in sealed sliding connection with the inner wall of the oil cavity;
the paddle operating rod is fixedly arranged at the bottom of the piston, is positioned in the main shaft of the water turbine and is in sealed sliding connection with the inner wall of the main shaft of the water turbine; the bottom of the paddle operating rod is also connected with a paddle operating frame for specifically executing the opening and closing adjustment operation of the paddle;
further comprising:
the first operating oil pipe is arranged in the piston rod in a penetrating mode, the top end of the first operating oil pipe is communicated with the high-pressure hose, and the bottom end of the first operating oil pipe is arranged at the top of the piston;
and the second operation oil pipe is arranged in the piston rod and the piston in a penetrating manner, the top end of the second operation oil pipe is communicated with the other high-pressure hose, and the bottom end of the second operation oil pipe is arranged at the bottom of the piston.
Optionally, the bottom end of the first operating oil pipe is arranged at the top of the piston and is located on the side wall of the bottom of the piston rod; the bottom end of the second operation oil pipe is arranged at the bottom of the piston and is positioned on the side wall of the top of the paddle operation rod.
Optionally, a combined sealing ring is arranged at a gap between the piston rod and the main shaft of the generator, which is close to the oil cavity, and a gap between the paddle operating rod and the main shaft of the water turbine, which is close to the oil cavity.
Optionally, the reversing valve is a two-position four-way reversing valve, the two-position four-way reversing valve is mounted at the oil outlet of the oil tank, and the high-pressure hose is connected with the two-position four-way reversing valve.
The above improvements can be implemented alone or in combination without conflict.
Based on the same inventive concept, the utility model also provides a Kaplan turbine, which comprises water inlet equipment, a water distributor, a runner and water outlet equipment; the water inlet equipment is used for introducing water flow; the water distributor is used for regulating the flow of the water turbine according to the load change of the unit and guiding water flow to enter the rotating wheel in a necessary direction to form a speed moment; the runner is used for realizing water energy conversion; the water outlet equipment is used for smoothly guiding the water flow at the outlet of the rotating wheel to the downstream and reducing the kinetic energy loss at the outlet of the rotating wheel;
the runner comprises the Kaplan turbine blade control device in the technical scheme.
Compared with the prior art, the utility model has the beneficial effects that:
1. the paddle control device is integrally arranged on a main shaft of a generator of a water turbine and a main shaft of the water turbine, and synchronously rotates with the main shaft of the water turbine during operation, and simultaneously, an external oil source is not needed for supplying high-pressure oil, so that linkage is realized during oil supply, and the problems of easy abrasion and oil leakage caused by the fact that the pressure oil is connected with a rotating main shaft part through a static fixed oil pipe in the traditional structure are solved.
2. The structure design of the utility model avoids the abrasion defect of the traditional structure, thus the pressure oil source with higher oil pressure level can be adopted to operate the rotation of the paddle, the problems of abrasion, leakage, failure and the like of an oil receiver can be avoided, the efficiency is higher, and the operation is more stable and safer.
3. The wireless communication control box is adopted, and the wireless communication control box is in wireless signal communication with the control system of the water turbine, so that the intelligent and rapid control over the direct-current high-pressure oil pump unit and the reversing valve is realized, and the structure of the whole device is simpler and more compact; the direct-current high-pressure oil pump unit is provided with a direct-current power supply, and an excitation loop is used for floating charging during normal operation, so that the efficiency is higher.
4. The utility model has simple and compact integral structure, shorter manufacturing period, lower manufacturing cost, higher operating efficiency, and higher safety and reliability compared with the traditional structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Reference numerals:
1-generator main shaft, 11-connecting seat;
2-main shaft of water turbine, 21-flaring slot;
3-oil receiver component, 31-base, 32-oil tank, 33-high pressure hose, 34-outer protective cover;
4-servomotor assembly, 41-oil chamber, 411-upper oil chamber, 412-lower oil chamber, 42-piston rod, 43-piston, 44-paddle operating lever, 45-combined sealing ring, 46-first operating oil pipe, 47-second operating oil pipe;
5-an oil receiver control component, 51-a wireless communication control box, 52-a direct-current high-pressure oil pump unit and 53-a reversing valve.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides a slurry control device for a Kaplan turbine, which includes a generator main shaft 1, a turbine main shaft 2 fixedly connected to a lower end of the generator main shaft 1, and further includes an oil receiver assembly 3, a servomotor assembly 4, and an oil receiver control assembly 5, where the oil receiver assembly 3 is mounted on the generator main shaft 1 and is used for storing and delivering pressure oil; the servomotor assembly 4 is arranged in the generator main shaft 1 and the water turbine main shaft 2, is positioned below the oil-supply head assembly 3, and is communicated with an oil way of the oil-supply head assembly 3; the oil-supply head control assembly 5 is arranged on the oil-supply head assembly 3 and comprises a wireless communication control box 51, a direct-current high-pressure oil pump unit 52 and a reversing valve 53; the wireless communication control box 51 is used for receiving a control signal sent by the water turbine control system and sending a corresponding operation signal to the direct-current high-pressure oil pump unit 52 and the reversing valve 53 according to the received control signal; the direct-current high-pressure oil pump unit 52 and the reversing valve 53 are in signal connection with the wireless communication control box 51. The direct-current high-pressure oil pump unit 52 is provided with a direct-current power supply, an excitation loop is used for floating charging during normal operation, the efficiency is higher, and the direct-current high-pressure oil pump unit is in signal connection with the wireless communication control box 51, so that the wireless communication control box 51 can send an operation signal to the direct-current high-pressure oil pump unit 52, and the start-stop conversion of the direct-current high-pressure oil pump unit 52 is controlled; the wireless communication control box 51 is in signal connection with the reversing valve 53, so that the reversing valve 53 is operated to run to a corresponding working position state. The whole device is compact in structure, is integrally arranged on a generator main shaft 1 and a water turbine main shaft 2 of the water turbine, and synchronously rotates with the water turbine main shaft 2 during operation, and simultaneously, high-pressure oil is supplied without an external oil source, so that linkage is realized in the oil supply process, and the problems of easy abrasion and oil leakage caused by the fact that the pressure oil is connected with a rotating main shaft part through a static fixed oil pipe in the traditional structure are solved. And because the abrasion defect of the traditional structure is avoided, the pressure oil source with higher oil pressure level can be adopted to operate the rotation of the paddle, in the actual operation, the oil pressure level can reach 16 Mpa-25 Mpa, the efficiency is higher, and the operation is more stable and safer.
Preferably, in one embodiment, the oil-receiver assembly 3 includes a base 31, an oil tank 32 and a high-pressure hose 33, wherein the base 31 is mounted on the main shaft 1 of the generator; the oil tank 32 is mounted on the base 31 and used for storing pressure oil; two high-pressure hoses 33 are provided, one end of each of the two high-pressure hoses 33 is connected to the oil outlet of the oil tank 32, and the other end of each of the two high-pressure hoses 33 is connected to the servomotor assembly 4. The servomotor assembly 4 comprises an oil cavity 41, a piston rod 42, a piston 43, a blade operating rod 44, a blade operating frame (not shown in the figure) and an operating oil pipe, wherein the oil cavity 41 is formed by a connecting part of the generator main shaft 1 and the water turbine main shaft 2, specifically, the generator main shaft 1 is a hollow shaft, the lower end of the generator main shaft is provided with a connecting seat 11 protruding in the circumferential direction, the water turbine main shaft 2 is a hollow shaft, the upper end of the water turbine main shaft is provided with an expanding groove 21 protruding in the circumferential direction, the expanding groove 21 is matched with the connecting seat 11 in size, and the periphery of the bottom of the connecting seat 11 is fixedly connected with the top of the expanding groove 21, so that the oil cavity 41 is formed; the piston rod 42 is arranged in the generator main shaft 1 in a penetrating manner, and a combined sealing ring 45 is arranged at a gap between the piston rod 42 and the generator main shaft 1, which is close to the oil cavity 41, so that a sealed sliding connection is formed between the piston rod 42 and the inner wall of the generator main shaft 1; the piston 43 is fixedly arranged at the bottom end of the piston rod 42, is positioned in the oil chamber 41, and is in sealed sliding connection with the inner wall of the oil chamber 41 to separate the oil chamber 41 from top to bottom to form an upper oil chamber 411 and a lower oil chamber 412; the paddle operating rod 44 is positioned in the water turbine main shaft 2, and a combined sealing ring 45 is also arranged between the paddle operating rod 44 and the water turbine main shaft 2 at a position close to a gap of the oil cavity 41, so that the paddle operating rod 44 and the inner wall of the water turbine main shaft 2 are in sealed sliding connection; the top end of the paddle operating rod 44 is fixedly connected with the bottom of the piston 43, and the bottom end of the paddle operating rod is connected with a paddle operating frame which is used for specifically executing the opening and closing adjustment operation of the paddle; the operation oil pipes comprise a first operation oil pipe 46 and a second operation oil pipe 47, the first operation oil pipe 46 is vertically arranged in the piston rod 42 in a penetrating manner, the top end of the first operation oil pipe 46 is communicated with one high-pressure hose 33, and the bottom end of the first operation oil pipe is arranged at the top of the piston 43, namely is communicated with the upper oil chamber 411; the second operation oil pipe 47 is vertically and penetratingly disposed in the piston rod 42 and the piston 43, and has a top end communicating with the other high-pressure hose 33 and a bottom end disposed at the bottom of the piston 43, i.e., communicating with the lower oil chamber 412. Specifically, in the present embodiment, the bottom end of the first operating oil pipe 46 is disposed at the top of the piston 43 and located on the bottom side wall of the piston rod 42, and the bottom end of the second operating oil pipe 47 is disposed at the bottom of the piston 43 and located on the top side wall of the paddle operating lever 44, so that the pressing in and the pressing back of the pressure oil between the operating oil pipe and the upper and lower oil chambers are more efficient and smooth.
Preferably, in an embodiment, the oil-receiver assembly 3 further includes an outer protection cover 34, and the outer protection cover 34 is disposed above the base 31 and is used for performing cover-in protection on the oil tank 32, the high-pressure hose 33 and the oil-receiver control assembly 5.
Preferably, in an embodiment, the reversing valve 53 is a two-position four-way reversing valve, the two-position four-way reversing valve is installed at an oil outlet of the oil tank 32, the high-pressure hose 33 is connected to the two-position four-way reversing valve, and the flow direction of the pressure oil between the oil chamber 41 and the oil tank 32 is switched by the two-position four-way reversing valve.
In another embodiment of the present invention, a Kaplan turbine is further provided, which includes a water inlet device, a water distributor, a runner, and a water outlet device; the water inlet equipment is used for introducing water flow; the water distributor is used for regulating the flow of the water turbine according to the load change of the unit and guiding water flow to enter the rotating wheel in a necessary direction to form a speed moment; the runner is used for realizing water energy conversion; the water outlet equipment is used for smoothly guiding the water flow at the outlet of the rotating wheel to the downstream and reducing the kinetic energy loss at the outlet of the rotating wheel; the runner comprises the Kaplan turbine blade control device in the embodiment.
It should be noted that the specific models of the wireless communication control box 51, the direct-current high-pressure oil pump unit 52 and the reversing valve 53 can be selected according to the power of the water turbine and other conditions, so as to realize corresponding functions, and the utility model is not limited in particular.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "one end", "the other end", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Meanwhile, unless explicitly stated or limited otherwise, technical terms or scientific terms used in the present invention shall have the ordinary meaning understood by those having ordinary skill in the art to which the present invention belongs, such as the terms "disposed," "connected," "mounted," and the like shall be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated, for example; the connection can be mechanical connection or welding connection; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations. Similarly, the use of "first," "second," and the like, herein does not denote any order, quantity, or importance, but rather the terms first, second, and the like are used to distinguish one element from another.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a paddle control device of a Kaplan turbine, which is characterized in that, includes generator main shaft and the hydraulic turbine main shaft fixedly connected in generator main shaft lower extreme still includes:
the oil receiver assembly is arranged on the main shaft of the generator and is used for storing and conveying pressure oil;
the servomotor assembly is arranged in the generator main shaft and the water turbine main shaft, is positioned below the oil-supply head assembly and is communicated with an oil way of the oil-supply head assembly;
the oil-supply head control assembly is arranged on the oil-supply head assembly and comprises a wireless communication control box, a direct-current high-pressure oil pump unit and a reversing valve; the wireless communication control box is used for receiving an external control signal and sending a corresponding operation signal according to the received external control signal; the direct-current high-pressure oil pump unit and the reversing valve are in signal connection with the wireless communication control box.
2. The Kaplan turbine blade handling apparatus of claim 1, wherein the oil-head assembly comprises:
a base mounted on the generator main shaft;
an oil tank mounted on the base for storing pressure oil;
at least two high-pressure hoses; one end of the high-pressure hose is connected with the oil outlet of the oil tank, and the other end of the high-pressure hose is connected with the servomotor assembly.
3. The Kaplan turbine blade control device of claim 2, wherein the oil-supply head assembly further comprises an outer protective cover disposed above the base for in-cover protection of the oil tank, the high-pressure hose, and the oil-supply head control assembly.
4. The Kaplan turbine blade handling assembly of claim 2, wherein the servomotor assembly comprises:
an oil chamber formed by a connection portion of the generator main shaft and the turbine main shaft;
the piston rod is arranged in the generator main shaft in a penetrating manner and is in sealed sliding connection with the inner wall of the generator main shaft;
the piston is fixedly arranged at the bottom end of the piston rod, is positioned in the oil cavity and is in sealed sliding connection with the inner wall of the oil cavity;
the paddle operating rod is fixedly arranged at the bottom of the piston, is positioned in the main shaft of the water turbine and is in sealed sliding connection with the inner wall of the main shaft of the water turbine; the bottom of the paddle operating rod is also connected with a paddle operating frame for specifically executing the opening and closing adjustment operation of the paddle;
further comprising:
the first operating oil pipe is arranged in the piston rod in a penetrating mode, the top end of the first operating oil pipe is communicated with the high-pressure hose, and the bottom end of the first operating oil pipe is arranged at the top of the piston;
and the second operation oil pipe is arranged in the piston rod and the piston in a penetrating manner, the top end of the second operation oil pipe is communicated with the other high-pressure hose, and the bottom end of the second operation oil pipe is arranged at the bottom of the piston.
5. The Kaplan turbine blade control device of claim 4, wherein the bottom end of the first operating oil pipe is arranged on the top of the piston and positioned on the side wall of the bottom of the piston rod; the bottom end of the second operation oil pipe is arranged at the bottom of the piston and is positioned on the side wall of the top of the paddle operation rod.
6. The Kaplan turbine blade control device as claimed in claim 4, wherein a combined sealing ring is disposed between the piston rod and the main shaft of the generator near the gap of the oil chamber, and between the blade operating rod and the main shaft of the turbine near the gap of the oil chamber.
7. The Kaplan turbine blade control device according to claim 2, wherein the reversing valve is a two-position four-way reversing valve, the two-position four-way reversing valve is mounted at an oil outlet of the oil tank, and the high-pressure hose is connected with the two-position four-way reversing valve.
8. A kind of Kaplan turbine, it includes water inlet equipment, water distributor, runner and water outlet equipment; the water inlet equipment is used for introducing water flow; the water distributor is used for regulating the flow of the water turbine according to the load change of the unit and guiding water flow to enter the rotating wheel in a necessary direction to form a speed moment; the runner is used for realizing water energy conversion; the water outlet equipment is used for smoothly guiding the water flow at the outlet of the rotating wheel to the downstream and reducing the kinetic energy loss at the outlet of the rotating wheel; the runner includes a Kaplan turbine blade handling apparatus as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122472605.9U CN216381685U (en) | 2021-10-14 | 2021-10-14 | Paddle control device of Kaplan turbine and Kaplan turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122472605.9U CN216381685U (en) | 2021-10-14 | 2021-10-14 | Paddle control device of Kaplan turbine and Kaplan turbine |
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| Publication Number | Publication Date |
|---|---|
| CN216381685U true CN216381685U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122472605.9U Active CN216381685U (en) | 2021-10-14 | 2021-10-14 | Paddle control device of Kaplan turbine and Kaplan turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853794A (en) * | 2023-03-02 | 2023-03-28 | 四川省机械研究设计院(集团)有限公司 | Anti-idling water pump |
-
2021
- 2021-10-14 CN CN202122472605.9U patent/CN216381685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853794A (en) * | 2023-03-02 | 2023-03-28 | 四川省机械研究设计院(集团)有限公司 | Anti-idling water pump |
| CN115853794B (en) * | 2023-03-02 | 2023-05-26 | 四川省机械研究设计院(集团)有限公司 | Anti-idle rotation water pump |
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