CN112762061A - Device for inhibiting cavitation of suction surface of hydrofoil - Google Patents

Device for inhibiting cavitation of suction surface of hydrofoil Download PDF

Info

Publication number
CN112762061A
CN112762061A CN202110013752.1A CN202110013752A CN112762061A CN 112762061 A CN112762061 A CN 112762061A CN 202110013752 A CN202110013752 A CN 202110013752A CN 112762061 A CN112762061 A CN 112762061A
Authority
CN
China
Prior art keywords
valve
channel
slideway
hydrofoil
spring
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
Application number
CN202110013752.1A
Other languages
Chinese (zh)
Other versions
CN112762061B (en
Inventor
胡常莉
张亮
傅琳琅
周毅
程诚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Science and Technology
Original Assignee
Nanjing University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing University of Science and Technology filed Critical Nanjing University of Science and Technology
Priority to CN202110013752.1A priority Critical patent/CN112762061B/en
Publication of CN112762061A publication Critical patent/CN112762061A/en
Application granted granted Critical
Publication of CN112762061B publication Critical patent/CN112762061B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a device for inhibiting cavitation of a suction surface of a hydrofoil, which consists of a valve, a spring, a valve channel, a slideway, a flow guide channel and a pressure transfer hole; the valve can slide left and right under the action of the spring; the local pressure of the suction surface of the hydrofoil acts on the left side of the valve through the pressure transfer hole. When the local pressure of the suction surface of the hydrofoil is reduced to the saturated vapor pressure, the pressure on the left side of the valve is reduced, the valve slides leftwards under the action of the spring force, the valve channel is communicated with the flow guide channel, and water on the pressure surface is guided to the suction surface through the channel due to the pressure difference, so that the local pressure is increased, and the cavitation is inhibited. The device has compact structure and small size, is simple to assemble with the hydrofoil, and can realize the effect of simultaneously inhibiting cavitation at multiple positions of the suction surface of the hydrofoil.

Description

Device for inhibiting cavitation of suction surface of hydrofoil
Technical Field
The invention belongs to the field of hydraulic machinery design and manufacture, and particularly relates to a device for inhibiting cavitation of a suction surface of a hydrofoil.
Background
When the local pressure within the liquid is reduced to the local saturation vapor pressure, bubbles or cavities are generated, i.e., cavitation occurs, within the liquid or at the liquid-solid interface. When the hydraulic machine works, cavitation often occurs on the suction surface of the blade, so that not only can hydrodynamic load of the blade be influenced, but also adverse effects such as vibration and cavitation can be brought, and therefore the working efficiency of the hydraulic machine is reduced and the service life of the hydraulic machine is shortened. Therefore, the research on the cavitation suppression strategy has been a hot topic in the field of hydraulic machinery.
The hydrofoil is a basic model of a hydraulic mechanical blade and relates to the application fields of civil ships, military naval vessels, large-scale water conservancy facilities and the like. At present, methods for inhibiting cavitation on the surface of a hydrofoil are mainly divided into two types, one is that pressure distribution is changed by optimally designing the geometric linear type of the hydrofoil, so that a low-pressure area of a suction surface is controlled, the method is high in workload, and the linear optimization objective function is not only used for inhibiting cavitation, but also needs to consider more factors and has certain limitation. Secondly, the pressure of the suction surface of the wing profile is improved by means of some additional devices and the change of the structure of the wing profile, so that the aim of inhibiting cavitation is fulfilled.
Disclosure of Invention
The invention aims to provide a device for inhibiting cavitation of a suction surface of a hydrofoil.
The technical solution for realizing the purpose of the invention is as follows: a device for inhibiting cavitation of a hydrofoil suction surface comprises a first valve A, a second valve B, a first valve channel, a second valve channel, a flow guide channel, a first spring, a second spring, a third spring, a fourth spring, a pressure transfer hole, a first slideway and a second slideway;
the first slideway and the second slideway are respectively two rectangular cavity bodies which are symmetrical up and down and are arranged at the upper end and the lower end of the device, the right sides of the two cavity bodies are superposed with the wall surface of the device, a flow guide channel is arranged between the first slideway and the second slideway, and the flow guide channel is communicated with the first slideway and the second slideway;
the left sides of the first slideway and the second slideway are provided with pressure transfer holes, the pressure transfer holes are thin straight channels, the top ends of the pressure transfer holes are communicated with the external environment, the upper parts of the pressure transfer holes are connected with the second slideway through the channels, and the bottom ends of the pressure transfer holes are connected with the first slideway through the channels;
the first valve A is arranged in the first slide way and can move left and right along the first slide way, a first valve channel vertical to the slide way is arranged on the right side of the first valve A, and the first valve channel is a circular channel; the second valve B is arranged in the second slide way and can move left and right along the second slide way, a valve channel vertical to the second slide way is arranged on the right side of the second valve B, and the second valve channel is a circular channel;
the first spring is arranged between the inner wall surface of the device and the wall surface of the first valve A; the second spring is arranged between the inner wall surface of one side of the first slideway close to the pressure transmission hole and the wall surface of the first valve A; the third spring is arranged between the inner wall surface of the device and the wall surface of the second valve B; the fourth spring is arranged between the inner wall surface of one side, close to the pressure transfer hole, of the second slide way and the wall surface of the second valve B.
Compared with the prior art, the invention has the following remarkable advantages: the cavitation can be effectively and simultaneously inhibited from happening at multiple positions, and the influence of cavitation on the hydrofoil is reduced; the device has simple structure and can be matched with various wing profiles for use.
Drawings
FIG. 1 is a schematic diagram of a front cross-sectional view of an apparatus for suppressing cavitation in a suction surface of a hydrofoil.
FIG. 2 is a schematic top cross-sectional view of an apparatus for suppressing cavitation in a suction surface of a hydrofoil.
FIG. 3 is a schematic external view of an apparatus for suppressing cavitation in a suction surface of a hydrofoil.
FIG. 4 is a schematic diagram of a Clark-y airfoil three-dimensional twisted hydrofoil structure.
Detailed Description
The invention relates to a device for inhibiting cavitation of a suction surface of a hydrofoil, which consists of a valve, a valve channel, a spring, a flow guide channel, a slideway and a pressure transmission hole; the valve can slide left and right under the action of the spring; the local pressure of the suction surface of the hydrofoil acts on the left side of the valve through the pressure transfer hole. When the local pressure of the suction surface of the hydrofoil is reduced to the saturated vapor pressure, the pressure on the left side of the valve is reduced, the valve slides leftwards under the action of the spring force, the valve channel is communicated with the flow guide channel, and water on the pressure surface is guided to the suction surface through the channel due to the pressure difference, so that the local pressure is increased, and the cavitation is inhibited. The design principle of the invention is that the fluid flow from the pressure surface to the suction surface is controlled according to the pressure change of the suction surface, thereby improving the local pressure. The invention aims to provide a device for controlling cavitation generation, which is used in combination with a hydrofoil and can realize the effect of simultaneously inhibiting cavitation at a plurality of suction surfaces of the hydrofoil.
The structure and the working principle of the two groups of valves are the same. Two sides of the valve are respectively connected to the inner wall surface of the device through springs, and a welding mode can be adopted; the valve can slide left and right in the slideway due to the change of the left and right stress of the valve; two groups of valves are respectively provided with a valve channel, and the inner diameter of the valve channel is the same as the flow guide channel in the middle of the device.
The pressure transfer hole is a thin straight hole and is communicated with the left cavities of the two groups of valves and the suction surface of the hydrofoil; the cross section of the pressure transfer hole is circular, so that the pressure transfer hole is convenient to process and manufacture, and the length of the pressure transfer hole can be determined by the thickness of an airfoil to be matched; the pressure transmission hole is relatively close to but not communicated with the flow guide channel, and the purpose of the pressure transmission hole is to accurately transmit the pressure of the suction surface to the left side surface of the valve in real time.
The hydrofoil is structurally characterized in that a hole is drilled on the suction surface of the hydrofoil, and the position of the hole can be arranged on the position on the surface of the hydrofoil, where cavitation is easy to generate; the hole and the cavitation inhibiting device adopt a thread matching mode; the central axis of the hole can be vertical to the surface of the airfoil, and can also form a certain angle with the surface of the airfoil, and the appearance shape and the size of the cavitation inhibition device are determined according to the size and the angle of the hole.
More specifically, the invention relates to a device for inhibiting cavitation of a suction surface of a hydrofoil, which comprises a first valve A, a second valve B, a first valve channel 1, a second valve channel 6, a flow guide channel 3, a first spring 2, a second spring 9, a third spring 5, a fourth spring 7, a pressure transmission hole 8, a first slideway 10 and a second slideway 4.
The first slideway 10 and the second slideway 4 are respectively two rectangular cavity bodies which are vertically symmetrical and are dug at the upper end and the lower end of the device, the right sides of the two cavity bodies are coincided with the wall surface of the device, and the left sides of the two cavity bodies are not coincided with the wall surface of the device. Between the first slideway 10 and the second slideway 4, there is a diversion passage 3, and the diversion passage 3 can connect the first slideway 10 and the second slideway 4.
There is a pressure transmission hole 8 on the left of first slide 10 and second slide 4, and pressure transmission hole 8 is a thin straight channel, and pressure transmission hole 8 top communicates with each other with external environment, and pressure transmission hole 8 upper portion passes through the passageway and links to each other with second slide 4, and pressure transmission hole 8 bottom passes through the passageway and links to each other with first slide 10.
The first valve A is a cuboid object block which can move left and right along the first slide way 10, a valve channel 1 which is vertical to the slide way 10 is arranged on the right side of the first valve A, and the valve channel 1 is a circular channel. The second valve B is a cuboid object which can move left and right along the second slide way 4, a valve channel 6 which is vertical to the second slide way 4 is arranged on the right side of the second valve B, and the valve channel 6 is a circular channel.
The first spring 2 is arranged between the inner wall surface of the device and the wall surface of the first valve A; the second spring 9 is arranged between the inner wall surface of one side of the first slideway 10 close to the pressure transfer hole 8 and the wall surface of the first valve A; the third spring 5 is arranged between the inner wall surface of the device and the wall surface of the second valve B; the fourth spring 7 is arranged between the inner wall surface of the second slideway 4 close to the pressure transfer hole 8 and the wall surface of the second valve B.
The first slideway 10 and the second slideway 4 are vertically symmetrical and are a cuboid cavity, the lower end surface of the first slideway 10 and the upper end surface of the second slideway 4 are not opened but are provided with a thin layer of a round hole, and the size of the round hole is the same as the cross-sectional area of the guide flow 3.
The cross section of the guide channel 3 is the same as that of the two valve channels 1 and 6, the shape of the guide channel is circular, the size of the guide channel is determined according to the size of a water wing surface used in cooperation, and the diameter of the guide channel 3 is 5-10% of the area of the upper surface and the lower surface of the device. The flow-guiding channel 3 is located on the centre line of the device.
The first valve a and the second valve B have a rectangular parallelepiped shape in appearance, and have valve passages 1 and 6 formed on one side thereof. The first valve a has a cross-sectional area which is the sum of the cross-sectional area of the first ramp 10 and the second valve B has a cross-sectional area which is the sum of the cross-sectional area of the second ramp 4. The centers of valve passages 1 and 6 are spaced from the center of valve A, B by no more than 50% of the total length of valves A and B, respectively.
The first spring 2, the second spring 9, the third spring 5 and the fourth spring 7 are the same size. And the middle diameter of the spring is not smaller than the diameter of a channel communicated with the pressure transmission hole 8 and not larger than the radial sizes of the first slide way 10 and the second slide way 4.
Relative to the characteristic size of the airfoil, the relative distance between the flow guide channel 3 and the pressure transfer hole 8 accounts for less than 5% of the total width of the hydrofoil.
Compared with the characteristic size of the airfoil, the aperture of the pressure transfer hole 8 is very small, the flow of the hydrofoil external flow field cannot be influenced, and the diameter of the pressure transfer hole 8 is 10% of the diameter of the flow guide channel 3.
The pressure surface C and the suction surface D of the device may be flat or have a slight curvature.
The device is cylindrical in shape, when the device is assembled on an airfoil, a through hole is formed in a position, which is easy to generate cavitation, on a suction surface C of the hydrofoil, and the position of the through hole is a chord length 1/3 position and is close to the front edge of the airfoil. The inner diameter of the hydrofoil hole is consistent with the outer diameter of the device, and a thread matching mode can be adopted.
The thickness of the device is the same as the thickness of the hydrofoil at the hydrofoil perforating hole.
The hydrofoil feature that the present apparatus may be used is that the hydrofoil may be any hydromechanical blade having pressure and suction surface features.
The invention is further described below with reference to the accompanying drawings.
The invention relates to a device for inhibiting cavitation of a suction surface of a hydrofoil, which consists of a first valve A, a second valve B, a first valve channel 1, a second valve channel 6, a flow guide channel 3, a first spring 2, a second spring 9, a third spring 5, a fourth spring 7, a pressure transmission hole 8, a first slideway 10 and a second slideway 4.
As shown in fig. 1, 2, 3 and 4, the present invention relates to an airfoil and a device for inhibiting cavitation of its suction surface, wherein the device comprises a first valve a, a second valve B, a first valve passage 1, a second valve passage 6, a flow guide passage 3, a first spring 2, a second spring 9, a third spring 5, a fourth spring 7, a pressure transfer hole 8, a first slideway 10, a second slideway 4; c denotes the pressure side and D denotes the suction side.
One end of the first spring 2 is positioned on the right side surface of the first valve A, and the other end of the first spring is positioned on the inner wall surface of the device; one end of the spring 9 is positioned on the left side surface of the valve A, and the other end of the spring is arranged on the inner wall surface of the slideway 10 at one side of the pressure transfer hole 8; one end of the spring 5 is positioned on the right side surface of the second valve B, and the other end is tail to the inner wall surface of the device; one end of the spring 7 is positioned on the left side surface of the valve B, and the other end of the spring is positioned on the inner wall surface of the slideway 4 on one side of the pressure transmission hole 8; the pressure transfer holes are filled with water, and the pressure of the suction surface D of the hydrofoil can be transferred to the left sides of the first valve A and the second valve B through the pressure transfer holes respectively; the first valve a and the second valve B can slide left and right in the slide 10 and the slide 4, respectively.
The specific working process is as follows:
the working process of the cavitation suppression device is explained in detail by taking a three-dimensional twisted hydrofoil with a Clark-y airfoil section as an example. The suction surface of the three-dimensional twisted hydrofoil is perforated at the position where cavitation is easy to generate, and the hole and the cavitation inhibition device adopt a thread matching mode.
Assuming that the left side surfaces of the first valve A and the second valve B are subjected to the pressure of the suction surface D transmitted by the pressure transmission hole 8 to generate acting forces F1 and F4, the directions are both right, and the left spring pre-tightening forces of the first valve A and the second valve B are respectively F2 and F5, and the directions are both right; the pretightening force of a right spring of the first valve A and the pretightening force of a right spring of the second valve B are respectively F3 and F6, and the pretightening forces are leftward; the first valve a and the second valve B are subjected to frictional forces fA and fB, respectively, in directions opposite to the valve movement direction.
When cavitation does not occur, the two sides of the first valve A and the second valve B are stressed to respectively meet the following conditions: f1+F2+f A
Figure DEST_PATH_IMAGE002
F3，F4+F5+f B
Figure 72689DEST_PATH_IMAGE002
F6At this time, the valve passage 1 and the valve passage 6 are not communicated with the flow guide passage 3, and the fluid at the pressure surface C cannot flowOnto the suction surface D.
When cavitation occurs, the left side forces F1 and F4 of the first valve A and the second valve B are reduced, when F1+ F2+ fA < F3 and F4+ F5+ fB < F6, the first valve A and the second valve B slide leftwards, when the balance state is achieved, the valve channels 1 and 6 are communicated with the flow guide channel 3, fluid on the pressure surface C flows to the low-pressure area of the suction surface D through the flow guide channel 3 under the action of pressure difference, the local pressure is increased, and therefore cavitation is restrained. When the pressure of the suction surface D increases to a certain extent, the left side forces F1 and F4 of the first valve a and the second valve B increase again, when the following conditions are satisfied: f1+ F2 > F3+ fA, F4+ F5 > F6+ fB, the valve a and the valve B slide to the right, and when the valve passages 1 and 6 are not communicated with the flow guide passage 3, the fluid on the pressure surface C does not flow to the suction surface D. The device controls whether the fluid flows from the pressure surface C to the low-pressure area of the suction surface D through the flow guide channel 3 according to whether cavitation occurs or not, the device is simple to assemble with the hydrofoil, and the effect of inhibiting cavitation from occurring at multiple positions of the suction surface of the hydrofoil at the same time can be achieved.
In summary, the device is different from the prior additional device with a complex structure, has a simple structure and small size, is easy to be matched with various airfoil shapes, and can realize the effect of simultaneously inhibiting cavitation at multiple positions.

Claims (10)

1. A device for inhibiting cavitation of a suction surface of a hydrofoil is characterized in that: the device comprises a first valve A, a second valve B, a first valve channel 1, a second valve channel 6, a flow guide channel 3, a first spring 2, a second spring 9, a third spring 5, a fourth spring 7, a pressure transmission hole 8, a first slide way 10 and a second slide way 4;
the first slideway 10 and the second slideway 4 are respectively two rectangular cavity bodies which are symmetrical up and down and are arranged at the upper end and the lower end of the device, the right sides of the two cavity bodies are superposed with the wall surface of the device, a flow guide channel 3 is arranged between the first slideway 10 and the second slideway 4, and the flow guide channel 3 is communicated with the first slideway 10 and the second slideway 4;
the left sides of the first slideway 10 and the second slideway 4 are provided with a pressure transmitting hole 8, the pressure transmitting hole 8 is a thin straight channel, the top end of the pressure transmitting hole 8 is communicated with the external environment, the upper part of the pressure transmitting hole 8 is connected with the second slideway 4 through a channel, and the bottom end of the pressure transmitting hole 8 is connected with the first slideway 10 through a channel;
the first valve A is arranged in the first slideway 10 and can move left and right along the first slideway 10, a first valve channel 1 vertical to the slideway 10 is arranged on the right side of the first valve A, and the first valve channel 1 is a circular channel; the second valve B is arranged in the second slide way 4 and can move left and right along the second slide way 4, a valve channel 6 vertical to the second slide way 4 is arranged on the right side of the second valve B, and the second valve channel 6 is a circular channel;
the first spring 2 is arranged between the inner wall surface of the device and the wall surface of the first valve A; the second spring 9 is arranged between the inner wall surface of one side of the first slideway 10 close to the pressure transfer hole 8 and the wall surface of the first valve A; the third spring 5 is arranged between the inner wall surface of the device and the wall surface of the second valve B; the fourth spring 7 is arranged between the inner wall surface of the second slideway 4 close to the pressure transfer hole 8 and the wall surface of the second valve B.
2. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the cross section of the flow guide channel 3 is the same as that of the first valve channel 1 and that of the second valve channel 6, the flow guide channels are circular, and the diameter of the flow guide channel 3 is 5% -10% of the area of the upper surface and the lower surface of the device; the flow-guiding channel 3 is located on the centre line of the device.
3. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the first valve A and the second valve B are cuboids; the cross section area of the first valve A is in size summation with the cross section area of the first slide way 10, and the cross section area of the second valve B is in size summation with the cross section area of the second slide way 4; the distance between the centers of the first valve passage 1 and the second valve passage 6 and the centers of the first valve A and the second valve B respectively is not more than 50 percent of the total length of the first valve A and the second valve B.
4. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the first spring 2, the second spring 9, the third spring 5 and the fourth spring 7 have the same size; and the pitch diameter of the spring is not less than the diameter of a channel communicated with the pressure transfer hole 8 and not more than the radial dimensions of the first slideway 10 and the second slideway 4.
5. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the relative distance between the flow guide channel 3 and the pressure transfer hole 8 accounts for less than 5% of the total width of the hydrofoil.
6. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the diameter of the pressure transfer hole 8 is 10% of the diameter of the flow guide channel 3.
7. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the pressure surface C and the suction surface D of the device are planes or surfaces with micro radian.
8. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the device is cylindrical, when the device is assembled on an airfoil, a through hole is formed at a position on a suction surface C of the hydrofoil, where cavitation is easy to generate, and the position of the through hole is a chord length 1/3 and is close to the front edge of the airfoil; the inner diameter of the hydrofoil hole is consistent with the outer diameter of the device, and a thread matching mode can be adopted.
9. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the thickness of the device is the same as the thickness of the hydrofoil at the hydrofoil perforating hole.
10. The apparatus for suppressing cavitation in a suction surface of a hydrofoil according to claim 1 wherein: the hydrofoil used in the device can be any hydraulic mechanical blade with the characteristics of a pressure surface and a suction surface.
CN202110013752.1A 2021-01-06 2021-01-06 Device for inhibiting cavitation of suction surface of hydrofoil Active CN112762061B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110013752.1A CN112762061B (en) 2021-01-06 2021-01-06 Device for inhibiting cavitation of suction surface of hydrofoil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110013752.1A CN112762061B (en) 2021-01-06 2021-01-06 Device for inhibiting cavitation of suction surface of hydrofoil

Publications (2)

Publication Number Publication Date
CN112762061A true CN112762061A (en) 2021-05-07
CN112762061B CN112762061B (en) 2023-06-16

Family

ID=75700206

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110013752.1A Active CN112762061B (en) 2021-01-06 2021-01-06 Device for inhibiting cavitation of suction surface of hydrofoil

Country Status (1)

Country Link
CN (1) CN112762061B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117408187A (en) * 2023-12-14 2024-01-16 中国科学院合肥物质科学研究院 Guide structure for controlling cavitation of hydraulic machinery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1423479A (en) * 1974-05-06 1976-02-04 United Stirling Ab & Co Valves comprising slide members for the control of fluid flow
CN205559366U (en) * 2016-03-29 2016-09-07 浙江理工大学 Centrifugal compressor's diffuser
CN206816871U (en) * 2017-06-07 2017-12-29 范景东 It is a kind of to pass through the valve of pressure change liquid outlet channel
CN111852998A (en) * 2020-06-30 2020-10-30 江苏大学 Cavitation suppression wing section device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1423479A (en) * 1974-05-06 1976-02-04 United Stirling Ab & Co Valves comprising slide members for the control of fluid flow
CN205559366U (en) * 2016-03-29 2016-09-07 浙江理工大学 Centrifugal compressor's diffuser
CN206816871U (en) * 2017-06-07 2017-12-29 范景东 It is a kind of to pass through the valve of pressure change liquid outlet channel
CN111852998A (en) * 2020-06-30 2020-10-30 江苏大学 Cavitation suppression wing section device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
邬伟等: "基于翼剖面改型的空化抑制", 《中国舰船研究》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117408187A (en) * 2023-12-14 2024-01-16 中国科学院合肥物质科学研究院 Guide structure for controlling cavitation of hydraulic machinery
CN117408187B (en) * 2023-12-14 2024-03-01 中国科学院合肥物质科学研究院 Guide structure for controlling cavitation of hydraulic machinery

Also Published As

Publication number Publication date
CN112762061B (en) 2023-06-16

Similar Documents

Publication Publication Date Title
KR101233653B1 (en) A device for reducing pressure and velocity of flowing fluid
CN106593837B (en) Hydraulic planger pump Variable Control structure and its control method
CN101954968B (en) Valve block special for hydraulic steering engine
CN112762061A (en) Device for inhibiting cavitation of suction surface of hydrofoil
CN107989991A (en) A kind of bidirectional slide valve type electro-hydraulic proportional reducing valve
CN204164067U (en) A kind of equilibrium valve
CN108953217A (en) A kind of particular configuration blade improving surface cavitation flow behavior
CN111637106A (en) Annular boss for reducing steady-state hydrodynamic force of multi-way valve
CN108302076B (en) Electrohydraulic proportional servo valve using bypass throttling
CN201799552U (en) Hydraulic system for proportional overflow pressure relief for hydraulic forging press
CN205260472U (en) Guiding valve formula structure
CN102537507A (en) Valve core of vane hydraulic motor controller
CN112268140B (en) Cavitation inhibition type hydraulic valve
CN211715438U (en) Electro-hydraulic control valve capable of regulating flow gain
CN210716256U (en) Through type pressure reducing short piece, sleeve and pressure reducing valve
CN202023780U (en) Pressure-reducing type balance hydraulic lock
CN103162007A (en) V-shaped ball valve
CN204900962U (en) Sealed relief valve of multi -level buffer formula bulb fine setting
CN210118300U (en) Asymmetric flow matching type balance locking system
CN203161701U (en) Damped speed controllable hydraulic valve bank
KR101224806B1 (en) Cylindrical multi down step stage trim, delta pressure control valve
CN209539680U (en) A kind of hydraulic pressure combination valve based on micro forming spool and special-shaped valve chamber
CN1304762C (en) Flow-blocking supercharging throttle valve using a dummy club
CN202301249U (en) Electro-hydraulic push rod-dedicated integrated valve bank
CN203948738U (en) Multi-way valve and hydraulic system

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