An underwater pipeline protection device for landslides

Abstract

The application relates to the technical field of pipeline protection devices, in particular to an underwater pipeline protection device for a landslide surge area, which comprises a shell rotatably installed on a pipeline, the shell comprises an outer protection shell and an inner protection shell, the inner protection shell is sleeved on the pipeline and is fixedly connected with the pipeline, the outer protection shell is rotatably arranged on the inner protection shell, and a plurality of fan leaves are radially outwardly extended on the outer protection shell, the plurality of fan leaves are uniformly distributed along the circumference, during use, the inner protection shell is fixedly arranged on the pipeline, the outer protection shell is rotatably installed on the inner protection shell, a plurality of fan leaves are radially outwardly extended on the outer protection shell, the fan leaves can reduce the impact kinetic energy of the surge, and the kinetic energy is converted into the kinetic energy of the rotation of the outer protection shell, thereby further reducing the impact kinetic energy of the surge, and a buffer cavity is formed between the two adjacent fan leaves, which reduces the kinetic energy of the impact surge.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline protection device, in particular to an underwater pipeline protection device in landslide surge area. BACKGROUND

[0002] The underwater pipeline is a main method for transporting fuel such as crude oil and natural gas. The pipeline transportation is generally carried out in a long-distance conveying mode, and the transported medium is generally gas or liquid medium. The pipeline transportation has the advantages of fast transportation speed, long transportation distance and large transportation capacity, and is widely used in various production activities of the society. It can be said that without pipeline transportation of various fluids, the production mode of human beings will not develop so rapidly, and the normal and efficient operation of the pipeline is particularly important.

[0003] When the pipeline is arranged underwater, it is easily affected by landslide surge and other secondary disasters. Once the landslide surge disaster occurs, the strong surge impact force can cause the pipeline to leak or even break, causing serious environmental pollution and economic loss. After the pipeline breaks, the leaked medium can cause extremely serious consequences and harm, so it is particularly important to provide sufficient protection devices for the underwater pipeline.

[0004] For the protection device of the underwater pipeline, most of them can only rely on the strength of the device material to protect against surges and other disasters. The current underwater pipeline protection device is greatly limited by the strength of the material, or the protection device cannot be set close to the pipeline, which is easy to cause omissions. The present application utilizes energy conversion to protect against surge disasters, which has great significance in pipeline protection. SUMMARY

[0005] The technical problem to be solved by the present application is that the current underwater pipeline protection device is greatly limited by the strength of the material, or the protection device cannot be set close to the pipeline, which is easy to cause omissions. To solve the above problem, the present application provides an underwater pipeline protection device in landslide surge area.

[0006] The technical scheme adopted by the present application to solve its technical problems is: a landslide surge area underwater pipeline protection device, comprising a shell rotatably installed on the pipeline, the shell comprising an outer protection shell and an inner protection shell, the inner protection shell being sleeved on the pipeline and fixedly connected with the pipeline, the outer protection shell being rotatably arranged on the inner protection shell, the outer protection shell extending radially outward along the pipeline with a plurality of fan leaves, the plurality of fan leaves being uniformly distributed along the circumference, the fan leaf having a connecting portion, a first buffer portion and a second buffer portion, one end of the connecting portion being arranged on the outer protection shell, the other end of the connecting portion being connected with one end of the first buffer portion, the other end of the first buffer portion being connected with the second buffer portion, the cross-sectional area of the connecting portion gradually decreasing from the outer protection shell to the first buffer portion, the cross-sectional area of the first buffer portion gradually increasing from the connecting portion to the second buffer portion, the cross-sectional area of the second buffer portion gradually decreasing from the other end of the first buffer portion to the other end of the second buffer portion, a buffer cavity being formed between the adjacent two fan leaves, the cross-sectional area of the buffer cavity gradually increasing from the inside to the outside along the radial direction of the pipeline. Compared with the prior art, the present application has the following advantages: the inner protection shell is fixedly arranged on the pipeline, and the outer protection shell is rotatably installed on the inner protection shell, the outer protection shell extending radially outward with a plurality of fan leaves, the fan leaves can reduce the impact kinetic energy of the surge and convert the kinetic energy into the rotational kinetic energy of the outer protection shell, further reducing the impact kinetic energy of the surge, and a buffer cavity is formed between the adjacent two fan leaves, which reduces the kinetic energy of the impacting surge.

[0007] In some preferred embodiments, a plurality of first energy dissipation holes are formed in the fan leaves, the first energy dissipation holes being used to cut and fragment the surge and reduce the impact kinetic energy of the surge on the pipeline.

[0008] In some preferred embodiments, the first energy dissipation holes comprise first holes and second holes, the first holes being arranged axially along the pipeline, the second holes being arranged radially along the pipeline, and the first holes and the second holes being arranged in an array.

[0009] In some preferred embodiments, the first holes and the second holes intersect and communicate with each other.

[0010] In some preferred embodiments, the first energy dissipation holes are hexagonal.

[0011] In some preferred embodiments, the outer protection shell is provided with second energy dissipation holes arranged radially along the pipeline, the second energy dissipation holes being used to cut and fragment the surge and provide rotational kinetic energy of the outer protection shell, thereby reducing the impact kinetic energy of the surge on the pipeline.

[0012] Preferably, the outer protective shell is provided with a damping mechanism between two adjacent blades, the damping mechanism comprises a spring and a gland, the outer protective shell is provided with a slide along the radial direction of the pipeline, the gland is matched with the slide, and the spring and the gland are arranged in the slide.

[0013] Preferably, the axis of the slide is staggered with the center axis of the outer protective shell.

[0014] Preferably, the second energy dissipation hole is circumferentially distributed.

[0015] Preferably, the inner protective shell comprises an upper clamp, a lower clamp and an annular slide rail, two ends of the upper clamp and the lower clamp are clamped with each other and fixed on the pipeline, the annular slide rail is arranged on the upper clamp and the lower clamp, the annular guide rail is located between the outer protective shell and the upper clamp and the lower clamp, the outer protective shell is provided with a sliding block matched with the annular slide rail, and the sliding block is slidably arranged on the annular slide rail.

[0016] The underwater pipeline protection device for landslide surge area of the present application has the advantages that: when the device is used, the inner protective shell is fixed on the pipeline, and the outer protective shell is rotatably installed on the inner protective shell, a plurality of blades are radially extended outward on the outer protective shell, the blades can reduce the impact kinetic energy of the surge and convert the kinetic energy into the kinetic energy of the rotation of the outer protective shell, further reducing the impact kinetic energy of the surge, a buffer cavity is formed between two adjacent blades, the buffer cavity reduces the kinetic energy of the impact surge, the speed and height of the surge are reduced to the minimum, the damage of the landslide surge to the pipeline is minimized, the pipeline is protected, the device is suitable for pipelines laid in the downstream of rivers, reservoir areas and both sides of rivers where landslide surges and secondary disasters frequently occur, and the device can be used to protect pipelines with different diameters by replacing outer protective shells and inner protective shells with different outer diameters, thereby avoiding the problems that the current underwater pipeline protection devices are greatly limited by the strength of materials or cannot be arranged close to the pipeline, and the problems of omissions are easily caused. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in combination with the drawings and examples.

[0018] Figure 1 is a three-dimensional structure schematic view of the present application;

[0019] Figure 2 is a front view of the present application;

[0020] Figure 3 is a left view of the present application;

[0021] Figure 4 is Figure 3Figure 2 is a sectional view along A-A of figure 1.

[0022] Figure 5 is Figure 4 Figure 3 is a partial enlarged view of B in figure 2.

[0023] Figure: 1, outer protective shell, 2, inner protective shell, 3, fan, 301, connecting part, 302, first buffer part, 303, second buffer part, 4, buffer cavity, 5, first energy dissipation hole, 501, first hole, 502, second hole, 6, second energy dissipation hole, 7, spring, 8, gland, 9, slide, 10, upper clamp, 11, lower clamp, 12, annular slide rail, 13, pipeline. DETAILED DESCRIPTION

[0024] The present application is further described below in conjunction with embodiments:

[0025] The present application is not limited to the following specific embodiments, and those skilled in the art can implement the present application in other various specific embodiments according to the disclosure of the present application, or any simple changes or modifications made by using the design structure and ideas of the present application, all fall within the protection scope of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] As Figures 1-5 shown, a landslide surge area underwater pipeline protection device, including a rotatingly installed on the pipeline 13 shell, the shell includes an outer protective shell 1 and an inner protective shell 2, the inner protective shell 2 is sleeved on the pipeline 13 and is fixedly connected with the pipeline 13, the outer protective shell 1 is rotatably arranged on the inner protective shell 2, the outer protective shell 1 extends radially outward along the pipeline 13 with six flaps 3, the six flaps 3 are uniformly distributed along the circumference, the flap 3 has a connecting portion 301, a first buffer portion 302 and a second buffer portion 303, one end of the connecting portion 301 is arranged on the outer protective shell 1, the other end of the connecting portion 301 is connected with one end of the first buffer portion 302, the other end of the first buffer portion 302 is connected with the second buffer portion 303, the cross-sectional area of the connecting portion 301 gradually decreases from the outer protective shell 1 to the first buffer portion 302, the cross-sectional area of the first buffer portion 302 gradually increases from the connecting portion 301 to the second buffer portion 303, the cross-sectional area of the second buffer portion 303 gradually decreases from the other end of the first buffer portion 302 to the other end of the second buffer portion 303, a buffer cavity 4 is formed between the adjacent two flaps 3, the cross-sectional area of the buffer cavity 4 gradually increases radially from inside to outside along the pipeline 13.

[0029] In order to better fragment the surge and reduce the impact kinetic energy of the surge, a plurality of first energy dissipation holes 5 are formed on the flap 3, the first energy dissipation hole 5 is used for cutting and fragmenting the surge, so as to reduce the impact kinetic energy of the surge on the pipeline 13, the first energy dissipation hole 5 includes a first hole 501 and a second hole 502, the first hole 501 is arranged axially along the pipeline 13, the second hole 502 is arranged radially along the pipeline 13, the first hole 501 and the second hole 502 are both arranged with a plurality of first holes 501 and second holes 502, the first hole 501 and the second hole 502 are crossed and communicated with each other, the first energy dissipation hole 5 is hexagonal.

[0030] The outer protective shell 1 is provided with a second energy dissipation hole 6 arranged radially along the pipeline 13, the second energy dissipation hole 6 is used for cutting and fragmenting the surge and can provide the rotating kinetic energy of the outer protective shell 1, so as to reduce the impact kinetic energy of the surge on the pipeline 13. The second energy dissipation hole 6 is uniformly distributed along the circumference.

[0031] The outer protective shell 1 is provided with a damping mechanism, the damping mechanism is located between the adjacent two flaps 3, the damping mechanism includes a spring 7 and a gland 8, the outer protective shell 1 is provided with a slide 9 arranged radially along the pipeline 13, the gland 8 is matched with the slide 9, the gland 8 and the spring 7 are arranged in the slide 9, the spring 7 is located between the gland 8 and the slide 9, the axis of the slide 9 and the rotating center axis of the outer protective shell 1 are staggered.

[0032] The inner protective shell 2 includes an upper clamp 10, a lower clamp 11, and an annular slide rail 12. The two ends of the upper clamp 10 and the lower clamp 11 are interlocked and fixed to the pipe 13. The annular slide rail 12 is set on the upper clamp 10 and the lower clamp 11. The annular guide rail is located between the outer protective shell 1 and the upper clamp 10 and the lower clamp 11. The outer protective shell 1 is provided with a slider that matches the annular slide rail 12. The slider is slidably set on the annular slide rail 12. The multi-layer material filling on the inner protective shell 2 can effectively play the roles of shock absorption, corrosion prevention and heat insulation, and provide multiple protections for the pipe 13.

[0033] When the aforementioned underwater pipeline protection device for landslide surge areas is in use, and when a landslide surge disaster occurs, the surge impacts the pipeline 13, and the surge impacts the outer protective shell 1. The surge impacts the fan blades 3, which absorb the impact kinetic energy of the surge and rotate on the inner protective shell 2, breaking up the surge and further reducing the impact kinetic energy of the surge on the pipeline 13. At the same time, the first energy dissipation hole 5 on the fan blade 3 absorbs the surge, and a portion of the surge enters the first hole 501 and the second hole 502 to collide and dissipate energy. The surge between two adjacent fan blades 3 is in the buffer chamber 4. Due to the rotation of the outer protective shell 1, the surge is thrown outward from the buffer chamber 4. 4. The cross-sectional area gradually increases from the inside to the outside of the pipe 13, which disperses the swell, increases the contact between the swell and other swells, and dissipates the energy of other swells through collision. The second energy dissipation hole 6 provides rotational power to the outer protective shell 1 on the one hand, and the rotating second energy dissipation hole 6 breaks up the swell and reduces the impact kinetic energy of the swell. At the same time, the swell that impacts the damping mechanism exerts a force on the pressure cover 8, and drives the pressure cover 8 to move and squeeze the spring 7, thus dissipating the energy of the swell. Since the axis of the slide 9 is intersected with the rotation center axis of the outer protective shell 1, when the spring 7 deforms, it provides further kinetic energy for the rotation of the outer protective shell 1, helps the outer protective shell 1 to rotate, and reduces the impact kinetic energy of the swell.

[0034] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. An underwater pipeline protection device for landslide surge areas, characterized in that: The system includes a housing rotatably mounted on a pipe (13). The housing includes an outer protective shell (1) and an inner protective shell (2). The inner protective shell (2) is fitted onto the pipe (13) and fixedly connected to the pipe (13). The outer protective shell (1) is rotatably mounted on the inner protective shell (2). The outer protective shell (1) has several fan blades (3) extending radially outward along the pipe (13). The fan blades (3) are evenly distributed around the circumference. Each fan blade (3) has a connecting part (301), a first buffer part (302), and a second buffer part (303). One end of the connecting part (301) is mounted on the outer protective shell (1), and the other end of the connecting part (301) is connected to one end of the first buffer part (302). The other end of the connecting part (301) is connected to the second buffer part (303). The cross-sectional area of ​​the connecting part (301) gradually decreases from the outer protective shell (1) to the first buffer part (302). The cross-sectional area of ​​the first buffer part (302) gradually increases from the connecting part (301) to the second buffer part (303). The cross-sectional area of ​​the second buffer part (303) gradually decreases from the other end of the first buffer part (302) to the other end of the second buffer part (303). A buffer cavity (4) is formed between two adjacent fan blades (3). The cross-sectional area of ​​the buffer cavity (4) gradually increases from the inside to the outside along the radial direction of the pipe (13). It is used to disperse the swell, increase the contact between the swell and other swells, and collide with and dissipate energy from other swells. The fan blade (3) is provided with a plurality of first energy dissipation holes (5), which are used to cut and break up the surging waves, thereby reducing the impact kinetic energy of the surging waves on the pipe (13). The outer protective shell (1) is provided with a second energy dissipation hole (6) arranged radially along the pipe (13). The second energy dissipation hole (6) is used to cut and break up the surging waves and can provide the rotational kinetic energy of the outer protective shell (1) to reduce the impact kinetic energy of the surging waves on the pipe (13). The outer protective shell (1) is provided with a shock-absorbing mechanism, which is located between two adjacent fan blades (3). The shock-absorbing mechanism includes a spring (7) and a pressure cover (8). A slide (9) is provided on the outer protective shell (1) along the radial direction of the pipe (13). The pressure cover (8) matches the slide (9). The pressure cover (8) and the spring (7) are both located in the slide (9). The spring (7) is located between the pressure cover (8) and the slide (9). The inner protective shell (2) includes an upper clamp (10), a lower clamp (11) and an annular slide rail (12). The two ends of the upper clamp (10) and the lower clamp (11) are interlocked and fixed on the pipe (13). The annular slide rail (12) is set on the upper clamp (10) and the lower clamp (11). The annular guide rail is located between the outer protective shell (1) and the upper clamp (10) and the lower clamp (11). The outer protective shell (1) is provided with a slider that matches the annular slide rail (12). The slider is slidably set on the annular slide rail (12).

2. The underwater pipeline protection device for landslide surge areas according to claim 1, characterized in that: The first energy dissipation hole (5) includes a first hole (501) and a second hole (502). The first hole (501) is arranged axially along the pipe (13), and the second hole (502) is arranged radially along the pipe (13). A plurality of the first hole (501) and the second hole (502) are arranged in an array.

3. The underwater pipeline protection device for landslide surge areas according to claim 2, characterized in that: The first hole (501) and the second hole (502) intersect and are interconnected.

4. An underwater pipeline protection device for landslide surge areas according to claim 1 or 2, characterized in that: The first energy dissipation hole (5) is hexagonal.

5. The underwater pipeline protection device for landslide surge areas according to claim 1, characterized in that: The axis of the slide (9) is intersected with the rotation center axis of the outer protective shell (1).

6. An underwater pipeline protection device for landslide surge areas according to claim 1 or 5, characterized in that: The second energy dissipation hole (6) is evenly distributed along the circumference.

Images