Pipeline damping and vibration suppression device and pipeline system

Abstract

The invention relates to the technical field of pipe network system damping and vibration suppression, and provides a pipeline damping and vibration suppression device and a pipeline system. The pipeline damping and vibration suppression device comprises a shell, a first annular filtering piece and a second annular filtering piece. An annular mixing cavity is formed in the shell, an annular communicating groove is formed in the inner side of the annular mixing cavity, and the first annular filtering piece is arranged in the annular communicating groove; the second annular filter part is arranged between the first annular filter part and the peripheral wall of the shell so as to divide the annular mixing cavity into a liquid inlet cavity and a filler cavity, and the filler cavity is filled with spherical particles so as to form a porous medium flow channel in the annular filler cavity. According to the pipeline damping and vibration suppression device, under the condition that flowing of a main stream is not affected, a high-concentration high-molecular polymer mixed solution can be slowly released from the pipeline wall to be mixed with the main stream, turbulent flow transition is delayed and turbulent flow pressure pulsation is suppressed through the viscoelasticity of the mixed solution, and therefore damping and vibration suppression of a pipeline system are achieved; the whole device does not occupy a main flow cavity, and the main flow resistance is not increased.

Description

Technical Field

[0001] The invention relates to the technical field of resistance reduction and vibration suppression in a pipeline network system, and in particular to a pipeline resistance reduction and vibration suppression device and a pipeline system. Background Art

[0002] Studies have shown that adding an appropriate amount of high-molecular polymer to the pipe network system and fully mixing it with pure water can form a viscoelastic fluid, thereby delaying the turbulent transition of the pipe wall and reducing the fluid pressure pulsation. This measure effectively reduces the flow resistance of the pipe network system, suppresses pressure pulsation and vibration, significantly improves flow efficiency, reduces circulation power, and improves acoustic performance. It is widely used in engineering fields such as shipbuilding, aerospace, and chemical industry. However, since the molecular weight of high-molecular polymers is usually above one million, it is difficult to dissolve in water. Traditional dissolution and mixing methods mainly rely on mechanical stirring or wall slow release, which has problems such as long time consumption, short duration, and unpredictable mixing time and effect, which brings challenges to the application of high-molecular polymers in pipe network systems. Summary of the invention

[0003] The invention provides a pipeline drag reduction and vibration suppression device and a pipeline system, which are used to solve the defects of the existing mechanical stirring or wall surface slow release dissolution and mixing methods, such as difficult to control the mixing effect, long time consumption and short duration.

[0004] One aspect of the present invention provides a pipeline drag reduction and vibration suppression device, comprising: a shell, a first annular filter element and a second annular filter element.

[0005] An annular mixing chamber is formed in the shell, a liquid inlet is provided on the shell, the liquid inlet is communicated with the annular mixing chamber, an annular communicating groove for communicating with a pipeline is provided on the inner side of the annular mixing chamber, the first annular filter is arranged in the annular communicating groove; the second annular filter is arranged between the first annular filter and the outer peripheral wall of the shell to separate the annular mixing chamber into a liquid inlet chamber and a filling chamber, the filling chamber is filled with spherical particles to form a porous medium flow channel in the annular filling chamber.

[0006] According to the pipeline drag reduction and vibration suppression device provided by the present invention, a flow guide structure for uniformly introducing liquid into the filler cavity is provided in the liquid inlet cavity.

[0007] According to the pipeline drag reduction and vibration suppression device provided by the present invention, the guide structure includes a plurality of spiral guide plates, and the plurality of spiral guide plates are evenly and spacedly arranged on the second annular filter element along the circumferential direction to form a guide cavity between adjacent spiral guide plates.

[0008] According to the pipeline drag reduction and vibration suppression device provided by the present invention, the angle between the spiral guide plate and the second annular filter element is 30° to 45°.

[0009] According to the pipeline drag reduction and vibration suppression device provided by the present invention, the mesh numbers of the first annular filter element and the second annular filter element are 70 to 100, and the filter hole diameters of the first annular filter element and the second annular filter element are both 1 / 4d to 1 / 3d, wherein d is the diameter of the spherical particles.

[0010] According to the pipeline drag reduction and vibration suppression device provided by the present invention, the diameter of the spherical particles is 0.45 mm to 0.8 mm, and the permeability of the filler cavity is 2.4×10 -10 m 2 to 7.6×10 -10 m 2 .

[0011] According to the pipeline drag reduction and vibration suppression device provided by the present invention, the annular filler cavity is filled with a plurality of spherical particles with different diameters.

[0012] The pipeline drag reduction and vibration suppression device provided according to the present invention further includes a liquid inlet pipe, which is communicated with the liquid inlet port and is provided with a control valve for controlling the liquid inlet flow rate.

[0013] According to the pipeline drag reduction and vibration suppression device provided by the present invention, the material of the spherical particles is at least one of stainless steel, glass, ceramic, rubber or copper-nickel alloy.

[0014] On the other hand, the present invention provides a pipeline system, comprising a pipeline, a liquid storage device and a pipeline drag reduction and vibration suppression device as described in any of the above items; a main flow cavity is formed in the pipeline, the pipeline drag reduction and vibration suppression device is sleeved on the pipeline, and the annular connecting groove is connected to the main flow cavity, and the liquid storage device is connected to the liquid inlet.

[0015] The pipeline drag reduction and vibration suppression device provided by the present invention forms an annular filling cavity in the mixing cavity of the shell, and fills the filling cavity with spherical particles. When in use, the pipeline drag reduction and vibration suppression device is set at a specific position of the pipeline, and the annular connecting groove is connected with the mainstream cavity of the pipeline. A polymer liquid of a specific concentration is introduced into the mixing cavity. After the liquid enters the annular filling cavity, the porous medium flow channel structure formed therein is conducive to the full dissolution and mixing of the polymer, and without affecting the mainstream flow of the pipeline system, the high-concentration polymer mixed solution is slowly released from the pipeline wall position into the pipeline to mix with the mainstream, and the viscoelasticity of the polymer mixed solution is used to postpone the turbulent transition of the main flow in the pipeline and suppress the turbulent pressure pulsation of the mainstream, thereby achieving the purpose of reducing the drag and suppressing the vibration of the pipeline system. In addition, the device as a whole will not occupy the mainstream cavity of the pipeline, and will not increase the flow resistance of the pipeline system.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is one of the schematic diagrams of the pipeline drag reduction and vibration suppression device provided in an embodiment of the present invention.

[0019] Figure 2 This is the second schematic diagram of the pipeline drag reduction and vibration suppression device provided in an embodiment of the present invention.

[0020] Figure 3 This is the third schematic diagram of the pipeline drag reduction and vibration suppression device provided in an embodiment of the present invention.

[0021] Figure 4 This is the fourth schematic diagram of the pipeline drag reduction and vibration suppression device provided in an embodiment of the present invention.

[0022] Figure 5 yes Figure 2 AA section view.

[0023] Figure 6 yes Figure 3 BB cross-sectional view.

[0024] Figure 7 yes Figure 4 CC cross-sectional view.

[0025] Figure 8 yes Figure 6 A partial enlarged view of D in the middle.

[0026] Fig. 9 It is a schematic diagram of a porous medium flow channel formed between spherical particles in the pipeline drag reduction and vibration suppression device provided in an embodiment of the present invention.

[0027] Reference numerals: 10. Shell; 110. Annular mixing chamber; 111. Liquid inlet chamber; 112. Filling chamber; 20. First annular filter element; 30. Second annular filter element; 40. Spherical particles; 50. Spiral guide plate; 60. Liquid inlet pipe; 70. Control valve; 80. Pipeline. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Combine the following Figures 1 to 9 The invention describes a pipeline drag reduction and vibration suppression device and a pipeline system.

[0034] See also Figures 1 to 7 As shown, the pipeline drag reduction and vibration suppression device provided in the embodiment of the present invention includes: a housing 10 , a first annular filter element 20 and a second annular filter element 30 .

[0035] An annular mixing chamber 110 is formed in the shell 10. A liquid inlet is provided on the shell 10, and the liquid inlet is connected to the annular mixing chamber 110. An annular connecting groove for connecting with the pipeline 80 is provided on the inner side of the annular mixing chamber 110. The first annular filter element 20 is arranged in the annular connecting groove; the second annular filter element 30 is arranged between the first annular filter element 20 and the outer peripheral wall of the shell 10 to separate the annular mixing chamber 110 into a liquid inlet chamber 111 and a filling chamber 112. The filling chamber 112 is filled with spherical particles 40 to form a porous medium flow channel in the annular filling chamber 112.

[0036] The pipeline drag reduction and vibration suppression device provided by the present invention forms an annular filling cavity 112 in the mixing cavity of the shell 10, and fills the filling cavity 112 with spherical particles 40. When in use, the pipeline drag reduction and vibration suppression device is set at a specific position of the pipeline 80, and the annular connecting groove is connected to the mainstream cavity of the pipeline 80. A polymer liquid of a specific concentration is introduced into the mixing cavity. After the liquid enters the annular filling cavity 112, the porous medium flow channel structure formed therein is conducive to the full dissolution and mixing of the polymer, and without affecting the mainstream flow of the pipeline system, the high-concentration polymer mixed solution is slowly released from the pipeline wall position into the pipeline to mix with the mainstream, and the viscoelasticity of the polymer mixed solution is used to delay the turbulent transition of the main flow in the pipeline and suppress the turbulent pressure pulsation of the mainstream, thereby achieving the purpose of reducing the drag and suppressing the vibration of the pipeline system. In addition, the device as a whole will not occupy the mainstream cavity of the pipeline 80, and will not increase the flow resistance of the pipeline system.

[0037] Specifically, when the fluid in the pipeline 80 flows at a high speed, turbulent pressure pulsation or vibrations in other parts may be generated, which may cause vibrations of the spherical particles 40. The elastic collision between the particles can convert the pulsation of the fluid and the vibration energy of the pipeline 80 into elastic potential energy and thermal energy, thereby achieving energy dissipation and reducing pipeline vibration.

[0038] In this embodiment, the spherical particles 40 are corrosion-resistant spherical particles. For example, the material of the spherical particles 40 can be stainless steel, glass, ceramics, rubber, copper-nickel alloy, etc. The filling cavity 112 can be filled with spherical particles 40 made of the same material, or spherical particles 40 made of multiple different materials can be selected according to needs.

[0039] The filling cavity 112 may be filled with spherical particles 40 of the same diameter or with spherical particles 40 of multiple different diameters.

[0040] Both ends of the housing 10 are provided with docking ports for docking with the pipeline 80. During assembly, the docking ports can be connected to the pipeline 80 by welding or the like. After docking, the packing cavity 112 is connected with the main flow cavity of the pipeline 80 through the annular connecting groove, so that the polymer solution fully mixed in the packing cavity 112 enters the main flow cavity of the pipeline 80. The number of liquid inlets on the housing 10 can be set to single or multiple according to needs, and the liquid inlet can be set on the outer peripheral wall or outer side wall of the housing 10.

[0041] The spherical particles 40 are confined in the packing cavity 112 by the cooperation between the first annular filter element 20 and the second annular filter element 30, and the liquid inlet cavity 111, the packing cavity 112 and the main flow cavity of the pipeline 80 can be connected through the filter holes on the first annular filter element 20 and the second annular filter element 30. The first annular filter element 20 can be arranged at the location of the annular communication groove by means of snap connection, welding or threaded fastening. Similarly, the second annular filter element 30 can also be connected to the inner side wall of the housing 10 by means of snap connection, welding or threaded fastening. When in use, the first annular filter element 20 and the second annular filter element 30 can be kept stable.

[0042] The first annular filter element 20 and the second annular filter element 30 are preferably made of corrosion-resistant metal filter elements. Of course, the first annular filter element 20 and the second annular filter element 30 can also be made of other corrosion-resistant materials, such as polypropylene (PP), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), ceramics or other corrosion-resistant composite materials.

[0043] The high molecular weight polymer is preferably polyacrylamide / polyethylene oxide with a molecular weight of millions.

[0044] See also Figure 6As shown, according to some embodiments of the present invention, a flow guiding structure for uniformly introducing liquid into the packing chamber 112 is provided in the liquid inlet chamber 111. By means of the flow guiding structure provided in the liquid inlet chamber 111, the high-concentration high-molecular polymer mixed solution entering the liquid inlet chamber 111 can be uniformly introduced into different positions in the packing chamber 112, and the porous medium flow channels generated between the spherical particles 40 at different positions in the packing chamber 112 can be fully utilized to fully dissolve and mix the high-concentration high-molecular polymer mixed solution.

[0045] See also Figure 6 As shown, according to some specific embodiments of the present invention, the guide structure includes a plurality of spiral guide plates 50, which are uniformly and spacedly arranged on the second annular filter element 30 along the circumferential direction to form a guide cavity between adjacent spiral guide plates 50. By arranging a plurality of spiral guide plates 50 at intervals along the circumferential direction, the guide cavity formed between adjacent guide plates can make the fluid flow along a specific path, ensuring that the polymer mixed solution can be evenly distributed to the filler cavity 112. At the same time, the spiral guide plate 50 can also promote the rotation of the fluid through the spiral shape, increase the contact area with the particles, thereby improving the mixing uniformity and enhancing the mixing effect.

[0046] Specifically, in the guide structure, the number of spiral guide plates 50, the spacing between adjacent spiral guide plates 50, and the angle between the spiral guide plates 50 and the filter element can be set according to requirements, and the present invention does not specifically limit this. However, it should be noted that the orientation of all spiral guide plates 50 must remain consistent.

[0047] See also Figure 8 As shown, according to some specific embodiments of the present invention, the angle α between the spiral guide plate 50 and the second annular filter element 30 is 30° to 45° (including the end value). By setting the angle between the spiral guide plate 50 and the second annular filter element 30 to 30° to 45°, the flow path of the fluid can be optimized, the interaction between the fluid and the solid particles can be enhanced, the mixing uniformity can be improved, and the fluid can be effectively guided to pass through the filter element, thereby improving the filtering efficiency. In addition, it can also help the fluid to smoothly pass through the second annular filter element 30 into the packing cavity 112, reduce turbulence, and improve flow stability.

[0048] As an example, the angle between the spiral guide plate 50 and the second annular filter element 30 may be 30°, 35°, 40° or 45°.

[0049] According to some specific embodiments of the present invention, the mesh number of the first annular filter element 20 and the second annular filter element 30 is 70 to 100 (including the end value), and the pore size of the first annular filter element 20 and the second annular filter element 30 is 1 / 4 d to 1 / 3 d (inclusive of the endpoints), whered is the diameter of the spherical particle 40. By limiting the mesh number and the pore size of the first annular filter element 20 and the second annular filter element 30, the mixing efficiency of the fluid and the permeability of the porous medium can be enhanced.

[0050] Specifically, the appropriate mesh number and pore size can optimize fluid flow, reduce dead corners and turbulence, and promote more uniform mixing. At the same time, the smaller pore size can improve the filtration accuracy and ensure that the finer spherical particles 40 are effectively intercepted.

[0051] As an example, the mesh number of the first annular filter element 20 and the second annular filter element 30 may be 70, 80, 90 or 100. The pore size of the first annular filter element 20 and the second annular filter element 30 may be 1 / 4 d or 1 / 3 d , for example, the diameter of the spherical particle 40 d When 0.6 mm is taken, the filter hole diameters of the first annular filter element 20 and the second annular filter element 30 can both be 0.15 mm to 0.2 mm.

[0052] According to some specific embodiments of the present invention, the diameter of the spherical particles 40 is 0.45 mm to 0.8 mm (including the end values), and the permeability of the filler cavity 112 is 2.4×10 -10 m 2 to 7.6×10 -10 m 2 (including the end point value). By controlling the permeability of the filler cavity 112 to 2.4×10 -10 m 2 to 7.6×10 -10 m 2 , which can significantly improve the mixing effect of concentrated polymer solutions, and can also effectively improve the seepage performance of concentrated solutions in porous media, which not only enhances the mixing efficiency but also ensures the uniform distribution of the fluid.

[0053] As an example, the diameter of the spherical particles 40 may be 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.7 mm, or 0.8 mm, etc. The permeability of the filler cavity 112 may be 2.4×10 -10 m 2 , 5×10 -10 m 2 or 7.6 × 10 -10 m 2 wait.

[0054] It should be noted that the permeability of the filler cavity 112 K satisfy: ; in, is the porosity of the porous medium, c is a constant (for spherical particles, c Usually the value is 150). d is the diameter of the spherical particle 40.

[0055] According to some specific embodiments of the present invention, the annular filler cavity 112 is filled with a plurality of spherical particles 40 with different diameters. By filling the annular filler cavity 112 with a plurality of spherical particles 40 with different diameters, although the porosity and permeability of the porous medium may be reduced, its ability to dissolve and enhance the mixing of polymers can be significantly enhanced. Such a diversified distribution of particles helps to improve the mixing effect of the fluid, making the dissolution process of the polymer more efficient.

[0056] Specifically, the spherical particles 40 of corresponding combined sizes may be filled into the filling cavity 112 according to the concentration and flow requirements of the high molecular weight polymer mixture.

[0057] See also Figures 1 to 3 As shown, according to some specific embodiments of the present invention, the device further includes a liquid inlet pipe 60, which is connected to the liquid inlet port, and a control valve 70 for controlling the liquid inlet flow rate is provided on the liquid inlet pipe 60. By providing the liquid inlet pipe 60 and the control valve on the liquid inlet pipe 60, the flow rate of the high molecular polymer concentrated solution entering the annular mixing chamber 110 can be controlled by the control valve 70, so that the device can adapt to different mainstream flow rates of the pipeline 80.

[0058] Specifically, the control valve 70 may be a one-way valve or a check valve or other valve components that can control the inlet flow rate.

[0059] Since the optimal concentration range of the polymer required for the comprehensive effect of drag reduction and vibration suppression of the mixed solution is between 15ppm and 30ppm, according to the flow rate of the system pipeline 80, valve components such as a one-way valve / check valve can be used to adjust the flow rate of the concentrated polymer solution entering the pipeline 80, so that the concentration of the mixed solution in the pipeline 80 is in the optimal working range.

[0060] In some embodiments, the control valve 70 may also be a one-way elastic valve, which can rely only on the pressure difference between the mainstream in the pipeline 80 and the annular mixing chamber 110 as a driving force. The higher the mainstream flow rate, the greater the pressure difference between the mainstream and the annular mixing chamber 110, the larger the opening of the one-way elastic valve, and the more polymer enters the mainstream, so that the concentration of the mixed solution in the pipeline 80 is maintained in a relatively stable range.

[0061] The high molecular polymer is polyacrylamide / polyethylene oxide with a molecular weight of millions. The optimal concentration range of the high molecular polymer required for the comprehensive effect of drag reduction and vibration suppression of the mixed solution is between 15ppm and 30ppm. According to the flow of system pipeline 80, the one-way valve / check valve-3 is used to adjust the flow of the high molecular polymer concentrated solution entering pipeline 80, so that the concentration of the mixed solution in pipeline 80 is in the optimal working range.

[0062] The pipeline system provided by the present invention is described below. The pipeline system described below and the pipeline drag reduction and vibration suppression device described above can be referenced to each other.

[0063] The pipeline system provided by an embodiment of the present invention includes a pipeline 80, a liquid storage device (not shown in the figure) and a pipeline drag reduction and vibration suppression device as described in any of the above embodiments; a main flow cavity is formed in the pipeline 80, the pipeline drag reduction and vibration suppression device is sleeved on the pipeline 80, and the annular connecting groove is connected to the main flow cavity, and the liquid storage device is connected to the liquid inlet.

[0064] The pipeline system provided by the present invention, because the pipeline resistance reduction and vibration suppression device is provided on the pipeline 80, can utilize the viscoelasticity of the high molecular polymer mixed solution to delay the turbulent transition of the main flow in the pipeline and suppress the turbulent pressure pulsation of the mainstream, thereby achieving the purpose of reducing resistance and suppressing vibration of the pipeline system. In addition, the device as a whole will not occupy the mainstream cavity of the pipeline 80, and will not increase the flow resistance of the pipeline system.

[0065] It should be noted that the concentration range of the high molecular polymer concentrated solution is between 1000ppm and 1500ppm. The mixed solution at this time is more viscous than the pure water solution, exhibits stronger viscoelastic properties, and flows slowly, which is conducive to the slow flow and release of the high-concentration mixed solution. Since the flow velocity of the mainstream in pipeline 80 is relatively fast, the fluid pressure near the pipe wall is lower than the fluid pressure of the concentrated solution in the annular mixing chamber 110, forming a flow driving force, driving the concentrated solution into the mainstream of pipeline 80 and mixing with it, and the higher the flow velocity in the mainstream pipeline, the greater the pressure difference, the greater the driving force, and the higher the flow rate of the concentrated solution entering pipeline 80.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipeline resistance reduction and vibration suppression device, characterized in that: include: A housing, a first annular filter element, and a second annular filter element; An annular mixing chamber is formed in the shell, a liquid inlet is provided on the shell, the liquid inlet is communicated with the annular mixing chamber, an annular communicating groove for communicating with a pipeline is provided on the inner side of the annular mixing chamber, and the first annular filter is provided in the annular communicating groove; The second annular filter element is arranged between the first annular filter element and the outer peripheral wall of the shell to separate the annular mixing chamber into a liquid inlet chamber and a filling chamber. The filling chamber is filled with spherical particles to form a porous medium flow channel in the annular filling chamber.

2. The pipeline drag reduction and vibration suppression device according to claim 1, characterized in that: The liquid inlet cavity is provided with a flow guiding structure for uniformly introducing the liquid into the filler cavity.

3. The pipeline drag reduction and vibration suppression device according to claim 2, characterized in that: The flow guide structure comprises a plurality of spiral flow guide plates, which are evenly and spacedly arranged on the second annular filter element along the circumferential direction to form a flow guide cavity between adjacent spiral flow guide plates.

4. The pipeline drag reduction and vibration suppression device according to claim 3, characterized in that: The included angle between the spiral guide plate and the second annular filter element is 30° to 45°.

5. The pipeline drag reduction and vibration suppression device according to claim 2, characterized in that: The mesh numbers of the first annular filter element and the second annular filter element are 70 to 100, and the filter pore diameters of the first annular filter element and the second annular filter element are both 1 / 4d to 1 / 3d, wherein d is the diameter of the spherical particles.

6. The pipeline drag reduction and vibration suppression device according to claim 1, characterized in that: The diameter of the spherical particles is 0.45 mm to 0.8 mm, and the permeability of the filler cavity is 2.4×10 -10 m 2 to 7.6×10 -10 m 2 .

7. The pipeline drag reduction and vibration suppression device according to any one of claims 1 to 6, characterized in that: The annular filling cavity is filled with a plurality of spherical particles with different diameters.

8. The pipeline drag reduction and vibration suppression device according to any one of claims 1 to 6, characterized in that: It also includes a liquid inlet pipe, which is communicated with the liquid inlet port, and a control valve for controlling the liquid inlet flow is provided on the liquid inlet pipe.

9. The pipeline drag reduction and vibration suppression device according to any one of claims 1 to 6, characterized in that: The material of the spherical particles is at least one of stainless steel, glass, ceramic, rubber or copper-nickel alloy.

10. A pipeline system, characterized in that: It comprises a pipeline, a liquid storage device and the pipeline drag reduction and vibration suppression device according to any one of claims 1 to 9; A main flow cavity is formed in the pipeline, the pipeline drag reduction and vibration suppression device is sleeved on the pipeline, the annular communication groove is communicated with the main flow cavity, and the liquid storage device is communicated with the liquid inlet.

Images