CN216552104U - Underwater pile protection device - Google Patents
Underwater pile protection device Download PDFInfo
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- CN216552104U CN216552104U CN202123048396.1U CN202123048396U CN216552104U CN 216552104 U CN216552104 U CN 216552104U CN 202123048396 U CN202123048396 U CN 202123048396U CN 216552104 U CN216552104 U CN 216552104U
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Abstract
The utility model belongs to the technical field of foundation protection of offshore wind power piles, and particularly relates to an underwater pile protection device which comprises a plurality of curved surface lantern ring bodies sleeved on the outer wall of a pile to be protected; each curved surface lantern ring body comprises a forward curved surface lantern ring and a reverse curved surface lantern ring which are symmetrically arranged, and the forward curved surface lantern ring and the reverse curved surface lantern ring are identical in structure; the forward curved surface collar comprises an O-ring part and a curved surface part which are connected into a whole; the two curved surface parts of the forward curved surface lantern ring and the reverse curved surface lantern ring can be spliced into a complete cambered surface. The curved surface lantern rings expand the wake area of the pile streaming, induce the separation of a boundary layer, destroy large vortexes into small vortexes and hinder the formation of karman vortex streets, so that vortex shedding and pressure pulsation are inhibited, in addition, the curved surface part can regulate and control secondary flow in the vertical direction, the scouring effect of horseshoe-shaped vortexes on the pile foundation is weakened, and the purpose of protecting the pile foundation is achieved.
Description
Technical Field
The utility model belongs to the technical field of foundation protection of offshore wind power piles, and particularly relates to an underwater pile protection device.
Background
Wind power generation has received close attention because of its cleanliness and abundant resources, and is currently the mainstream renewable energy power generation technology, and has been applied in large scale. In recent years, due to the continuous improvement of offshore engineering technology and better consumption conditions of coastal provinces, the development and construction of offshore wind power are rapid, and the loading capacity is increased year by year. However, offshore wind power is still a field with higher technical difficulty, and complex environments such as wind, wave and current of an offshore wind farm put higher requirements on the technology. Due to the simple structure of the single-pile foundation, the reliability is widely applied to offshore wind power plants. However, due to the large tidal current change in the offshore area and the high flow rate of seawater, the single pile of the fan foundation is seriously and locally scoured by the wave flow action, and a scouring pit is formed under the action of the horseshoe vortex, so that the safety of the pile foundation is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an underwater pile protection device, which solves the problem that the pile foundation is scoured due to large tidal current change in offshore sea areas.
The utility model is realized by the following technical scheme:
an underwater pile protection device comprises a plurality of curved surface lantern ring bodies sleeved on the outer wall of a pile to be protected;
each curved surface lantern ring body comprises a forward curved surface lantern ring and a reverse curved surface lantern ring which are symmetrically arranged, and the forward curved surface lantern ring and the reverse curved surface lantern ring have the same structure;
the forward curved collar comprises an O-ring portion and a curved portion connected together;
the two curved surface parts of the forward curved surface lantern ring and the reverse curved surface lantern ring can be spliced into a complete cambered surface.
Furthermore, the forward curved surface lantern ring is formed by splicing two symmetrical semi-lantern rings.
Furthermore, a lug is arranged at the contact joint of the two half lantern rings and fixedly connected through a bolt.
Further, the outer diameter of the O-shaped ring part is 1.2D-1.3D, the height is 0.05D-0.2D, and D is the diameter of the pile to be protected.
Further, the outer surface of the curved surface part is in a circular arc shape, a hyperbolic shape or a parabolic shape.
Further, the diameter of one end of the curved surface part connected with the O-shaped ring part is larger than that of one end of the curved surface part connected with the two adjacent curved surface parts.
Further, the diameter of the small end of the curved surface part is 1.005D-1.02D, the height of the curved surface part is 0.7D-1.2D, and D is the diameter of the pile to be protected.
Further, the curved surface lantern ring body is made of stainless steel.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model discloses an underwater pile protection device.A plurality of curved surface lantern ring bodies are arranged on the surface of a pile to be protected, each curved surface lantern ring body comprises a forward curved surface lantern ring and a reverse curved surface lantern ring which are symmetrically arranged, and each forward curved surface lantern ring comprises an O-shaped ring part and a curved surface part which are connected into a whole; the two curved surface parts of the forward curved surface lantern ring and the reverse curved surface lantern ring can be spliced into a complete cambered surface. The curved surface lantern rings expand the wake area of the pile streaming, induce the separation of a boundary layer, destroy large vortexes into small vortexes and hinder the formation of karman vortex streets, so that vortex shedding and pressure pulsation are inhibited, in addition, the curved surface part can regulate and control secondary flow in the vertical direction, the scouring effect of horseshoe-shaped vortexes on the pile foundation is weakened, and the purpose of protecting the pile foundation is achieved. The utility model adopts a passive response method, does not need an additional actuating mechanism, improves the reliability, does not increase the cost additionally, has simple and reliable structure, is easy to realize and is suitable for being widely applied in engineering. In conclusion, the underwater pile protection device and system can inhibit vortex shedding and weaken the scouring effect of horseshoe vortices on the pile foundation, so that the stability and the safety of the pile are enhanced.
Drawings
FIG. 1 is a schematic view of the installation structure of the curved surface lantern ring of the utility model;
FIG. 2 is a cross-sectional view of a forward curved ferrule;
fig. 3 is a cross-sectional view of a curved ferrule body.
Reference numbers in the figures: 1. a flow of water; 2. a seabed; 3. a pile to be protected; 4. a forward curved surface collar; 41. a curved surface portion; 42. an O-ring portion; 5. a reverse curved surface collar.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1-3, the utility model discloses an underwater pile protection device, which comprises a plurality of curved surface lantern ring bodies sleeved on the outer wall of a pile 3 to be protected; each curved surface lantern ring body comprises a forward curved surface lantern ring 4 and a reverse curved surface lantern ring 5 which are symmetrically arranged, and the forward curved surface lantern ring 4 and the reverse curved surface lantern ring 5 have the same structure; the forward curved collar 4 comprises an O-ring portion 42 and a curved portion 41 connected in one piece; the two curved surface parts 41 of the forward curved surface lantern ring 4 and the reverse curved surface lantern ring 5 can be spliced into a complete curved surface.
As shown in fig. 3, the curved sleeve ring body is fixed on the pile 3 to be protected, the forward curved sleeve ring 4 and the reverse curved sleeve ring 5 are alternately installed in the forward direction and the reverse direction and can be spliced into a complete symmetrical arc surface, the curved sleeve ring body is made of stainless steel, and the curved sleeve ring body can be continuously installed on the upper surface of the seabed 2 from the water surface as required.
The forward curved surface lantern ring 4 is formed by splicing two symmetrical semi-lantern rings, a lug is arranged at the contact joint of the two semi-lantern rings, and the lug is fixedly connected through a bolt.
The diameter of the pile 3 to be protected is marked as D, the outer diameter of the O-shaped ring part 42 is 1.2D-1.3D, and the height is 0.05D-0.2D.
The outer surface of the curved surface part 41 is a circular arc-shaped, hyperbolic or parabolic streamline curved surface, and the diameter of one end of the curved surface part 41 connected with the O-shaped ring part 42 is large, and the diameter of the other end is small. The diameter of the small diameter end is 1.005D to 1.02D, and the height of the curved surface portion 41 is 0.7D to 1.2D.
The working principle is as follows: under the action of ocean currents and waves, the large-diameter steel pipe pile foundation can induce strong water flows or vortexes rotating at high speed in local sea areas around the pile, and the water flows or the vortexes have high sand carrying capacity in scouring, so that the direction of the scouring problem of the pile foundation is improved by changing the characteristics of the water flows and the vortexes. Through at 3 surface mounting curved surface lantern ring bodies of treating protection stake, the curved surface lantern ring body can enlarge the trail region that the stake was flowed around, has induced the separation of boundary layer, destroys big vortex into little vortex, hinders the formation of karman vortex street to restrain the vortex and drop and pressure pulsation, in addition, curved surface part 41 can regulate and control the secondary flow of the rivers 1 of vertical direction, thereby weakens the washing effect of horseshoe vortex to the pile foundation, with the purpose that reaches protection pile foundation.
When the curved surface part 41 adopts the arc shape, the constructed curved surface geometric equation is (x-R-R)2+y2＝r2Wherein R is slightly larger than the radius of the pile 3 to be protected, preferably (1.005D-1.02D)/2, and R is the curvature of a circular arcThe radius can be 2.5D-5D.
When the curved surface part 41 adopts a hyperbolic shape, a curved surface geometric equation is constructed
Wherein a is slightly larger than the outer diameter of the pile 3 to be protected, and the eccentricity of a hyperbola can be 1.005D-1.02D)/2
When the curved surface part 41 adopts a parabolic shape, the constructed curved surface geometric equation is y2And c is slightly larger than the radius of the pile 3 to be protected, and can be (1.005D-1.02D)/2, and the through diameter of the parabola is 1.3D, 2P and 2.5D.
Through the field verification of the curved surface part 41 formed by the three curved surfaces, large vortexes can be broken into small vortexes to block the formation of karman vortex streets, so that vortex shedding and pressure pulsation are inhibited, and the effect on the flow of water flow under the geometric configurations is shown.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. An underwater pile protection device is characterized by comprising a plurality of curved surface sleeve ring bodies sleeved on the outer wall of a pile (3) to be protected;
each curved surface lantern ring body comprises a forward curved surface lantern ring (4) and a reverse curved surface lantern ring (5) which are symmetrically arranged, and the forward curved surface lantern ring (4) and the reverse curved surface lantern ring (5) have the same structure;
the forward curved collar (4) comprises an O-ring portion (42) and a curved portion (41) connected in one piece;
the two curved surface parts (41) of the forward curved surface lantern ring (4) and the reverse curved surface lantern ring (5) can be spliced into a complete curved surface.
2. An underwater pile protection device as claimed in claim 1, characterised in that the positively curved collar (4) is formed by splicing two symmetrical half collars.
3. An underwater pile protection device as claimed in claim 2, wherein lugs are provided at the contact connection of the two half collars, the lugs being fixedly connected by bolts.
4. An underwater pile protection device according to claim 1, characterised in that the O-ring portion (42) has an outer diameter of 1.2D to 1.3D and a height of 0.05D to 0.2D, where D is the diameter of the pile (3) to be protected.
5. An underwater pile protection device as claimed in claim 1, wherein the curved surface portion (41) has an outer surface of a circular arc, a hyperbolic shape or a parabolic shape.
6. An underwater pile protection device as claimed in claim 1, wherein the curved surface portion (41) is connected to the O-ring portion (42) at an end having a larger diameter than an end of the adjacent curved surface portion (41).
7. An underwater pile protection device according to claim 6, wherein the diameter of the end of the curved portion (41) with the smaller diameter is 1.005D to 1.02D, and the height of the curved portion (41) is 0.7D to 1.2D, where D is the diameter of the pile (3) to be protected.
8. An underwater pile protection device as claimed in claim 1, wherein the curved collar body is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123048396.1U CN216552104U (en) | 2021-12-06 | 2021-12-06 | Underwater pile protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123048396.1U CN216552104U (en) | 2021-12-06 | 2021-12-06 | Underwater pile protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216552104U true CN216552104U (en) | 2022-05-17 |
Family
ID=81539278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123048396.1U Active CN216552104U (en) | 2021-12-06 | 2021-12-06 | Underwater pile protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216552104U (en) |
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2021
- 2021-12-06 CN CN202123048396.1U patent/CN216552104U/en active Active
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