Conveying pipeline vibration reduction and impact prevention device based on magneto-rheological damping and control system

Abstract

The invention provides a conveying pipeline vibration reduction and impact prevention device based on magneto-rheological damping and a control system, and relates to the technical field of pipeline vibration reduction and impact prevention. The conveying pipeline vibration reduction and impact prevention device based on magneto-rheological damping comprises a first sealing body, a second sealing body is internally provided with a first buffer plate, and the second sealing body is internally provided with a second buffer plate; the upper end face of the first buffer plate is connected with the supporting rod. The second sealing body is filled with magnetorheological damping fluid, and a first electromagnetic coil is embedded in the first buffer plate. A first inner pipe of a first sealing main body of the conveying pipeline vibration reduction and impact prevention device based on magneto-rheological damping is arranged on a conveying pipeline in a sleeving manner and is fixed; the supporting rod is inserted into the second sealing main body, the magnetorheological damping liquid is arranged in the second sealing main body, the first electromagnetic coil is embedded in the first buffer plate arranged on the supporting rod, and the magnetorheological damping liquid can provide proper resistance for the first buffer plate by adjusting the intensity of current and adjusting the magnetorheological damping liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline vibration reduction and impact prevention, and in particular to a transmission pipeline vibration reduction and impact prevention device and a control system based on magnetorheological damping. Background Art

[0002] LNG pipelines are prone to vibration due to factors such as turbulent flow, two-phase flow, and throttling of pipe fittings. These vibrations are highly intense and can easily cause pipeline deformation, weld cracks, and even breakage. Severe pipeline vibrations can compromise the smooth operation of dynamic equipment like compressors. The resulting reciprocating inertial forces can cause fatigue damage to parts of the pipeline, leading to ruptures and medium leaks. Furthermore, water hammer, a severe shock within the LNG pipeline, can occur when pumps are started or stopped or valves are opened or closed. The instantaneous pressure generated by water hammer can reach several or even dozens of times the normal operating pressure of the pipeline. These significant pressure fluctuations can cause severe vibration in the pipeline system, damaging pipeline components and resulting in serious consequences. Summary of the Invention

[0003] The purpose of the present invention is to provide a vibration reduction and impact protection device for a transportation pipeline based on magnetorheological damping, so as to alleviate the technical problems in the prior art that LNG pipelines are easily induced to vibrate due to factors such as turbulent flow, two-phase flow, and pipe throttling, and the vibration intensity is relatively high, which makes it very easy for the pipeline to deform, rupture at the weld, and even break.

[0004] The present invention provides a vibration reduction and impact protection device for a conveying pipeline based on magnetorheological damping, comprising a first sealing body, a first inner tube passing through the first sealing body, and the first inner tube and the first sealing body being able to slide relative to each other; the first inner tube is used to be sleeved on the conveying pipeline;

[0005] A support rod is provided on the first sealing body, and an extending direction of the support rod is perpendicular to an extending direction of the first inner tube;

[0006] The lower end of the support rod is penetrated by the second sealing body, and the support rod and the second sealing body are capable of sliding relative to each other;

[0007] A first buffer plate is provided in the second sealing body, and an upper end surface of the first buffer plate is connected to the support rod;

[0008] The second sealing body is filled with magnetorheological damping fluid, and the first buffer plate is embedded with a first electromagnetic coil.

[0009] In an optional embodiment, the first sealing body is filled with magnetorheological damping fluid, a second buffer plate is provided in the first sealing body, and the second buffer plate is fixed to the first inner tube;

[0010] A plurality of second flow holes are provided on the second buffer plate, and the second flow holes are used to allow the magnetorheological damping fluid on one side of the second buffer plate to flow to the other side of the second buffer plate;

[0011] A plurality of first sleeves are provided on the second buffer plate, and the first sleeves are all arranged parallel to the first inner tube, and both ends of the first sleeves are connected to the inner wall of the first sealing body;

[0012] Two upper return springs are sleeved on the first sleeve, the second buffer plate is located between the two upper return springs, one end of the upper return spring abuts against the second buffer plate, and the other end abuts against the inner wall of the first sealing body;

[0013] A second electromagnetic coil is provided in the first sealing body, and / or a second electromagnetic coil is provided in the first sleeve.

[0014] In an optional embodiment, a thermal insulation layer is provided in the first inner tube, and the thermal insulation layer wraps the conveying pipeline.

[0015] In an optional embodiment, two first assembly holes arranged opposite to each other are provided on the first sealing body, and a first sealing ring is provided in the first assembly hole; the first sealing ring is sleeved on the first inner tube.

[0016] In an optional embodiment, a second assembly port is provided on the second sealing body, the support rod is assembled on the second assembly port, a second sealing ring is provided on the second assembly port, and the second sealing ring is sleeved on the support rod.

[0017] In an optional embodiment, a float is provided on the lower end surface of the first buffer plate.

[0018] In an optional embodiment, a support frame is provided on the second sealing body.

[0019] In an optional embodiment, an upper limit baffle is provided on the support rod, and a lower return spring is sleeved on the support rod, one end of the lower return spring abuts against the upper limit baffle, and the other end abuts against the second sealing body.

[0020] In an optional embodiment, a distance sensor is provided on the upper limit baffle, and a first adjustment component is provided on the second sealing body, and the first adjustment component is used to adjust the current intensity of the first electromagnetic coil;

[0021] A vibration sensor is provided on the first inner tube, and a second adjustment component is provided on the first sealing body, wherein the second adjustment component is used to adjust the current intensity of the second electromagnetic coil;

[0022] It also includes a control component, which is connected to the first adjustment component and the second adjustment component respectively, and is used to control the first adjustment component and the second adjustment component.

[0023] The first inner tube of the first sealing body of the conveying pipeline vibration reduction and impact protection device based on magnetorheological damping provided by the present invention is sleeved on the conveying pipeline and fixed, and the first inner tube moves synchronously with the conveying pipeline; the support rod is inserted into the second sealing body, and the second sealing body contains magnetorheological damping fluid, and the first electromagnetic coil is embedded in the first buffer plate arranged on the support rod. By adjusting the intensity of the current, the magnetorheological damping fluid is adjusted so that the magnetorheological damping fluid can provide appropriate resistance to the first buffer plate, thereby playing a role in reducing the vibration of the conveying pipeline in the upper and lower directions, and thus the conveying pipeline vibration reduction and impact protection device based on magnetorheological damping can play a role in reducing vibration and preventing impact.

[0024] The present invention provides a control system for a transmission pipeline vibration reduction and impact protection device based on magnetorheological damping, comprising a control component, a vibration sensor, and a distance sensor; the control component is respectively connected to the vibration sensor, the distance sensor, a first adjustment component, and a second adjustment component;

[0025] The vibration sensor is arranged on the first inner tube for detecting the vibration of the first inner tube; the distance sensor is arranged on the upper limit baffle for measuring the distance between the upper limit baffle and the second sealing body;

[0026] The control component includes a signal processing module, a signal acquisition module, a feedback processing module and a signal transmission module; the signal acquisition module is used to collect signals sent by the vibration sensor and the distance sensor and send the signals to the signal processing module, the signal processing module calculates the vibration change rate of the axial vibration collected by the vibration sensor and the distance change rate collected by the distance sensor respectively, the signal processing module calculates the difference between the vibration change rate of the axial vibration and the distance change rate collected by the distance sensor, and then sends a control signal to the feedback processing module and the signal transmission module, the feedback processing module is used to convert the control signal sent by the signal processing module into an electrical signal and send it to the first adjustment component and the second adjustment component; the first adjustment component is used to adjust the current size and on-off of the first electromagnetic coil, and the second adjustment component is used to adjust the current size and on-off of the second electromagnetic coil.

[0027] The control system of the conveying pipeline vibration reduction and impact prevention device based on magnetorheological damping provided by the present invention can adjust the current of the first electromagnetic coil and the second electromagnetic coil in real time according to the axial vibration and vertical vibration of the first inner tube, change the physical properties of the magnetorheological damping fluid in the first sealing body and the second sealing body, so that the conveying pipeline vibration reduction and impact prevention device based on magnetorheological damping can adjust the vibration damping according to the vibration frequency, and quickly reduce the vibration of the conveying pipeline in the axial and radial directions until it is reset to a stationary state, thereby achieving vibration reduction and impact prevention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific 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 any creative work.

[0029] Figure 1 A schematic structural diagram of a transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping provided by an embodiment of the present invention;

[0030] Figure 2 for Figure 1 The internal structure diagram of the transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping is shown;

[0031] Figure 3 for Figure 1 A schematic structural diagram of a cross section of a first sleeve of a transmission pipeline vibration reduction and impact protection device based on magnetorheological damping is shown;

[0032] Figure 4 for Figure 1 A schematic structural diagram of the second electromagnetic coil of the conveying pipeline vibration reduction and impact prevention device based on magnetorheological damping is shown;

[0033] Figure 5 A schematic diagram of the control process of the transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping and the control system provided in an embodiment of the present invention.

[0034] Icons: 100-first sealing body; 200-second sealing body; 300-first inner tube; 400-support frame; 500-second adjustment assembly; 600-vibration sensor; 700-first adjustment assembly; 800-distance sensor; 900-control assembly; 110-upper limit baffle; 120-lower return spring; 130-second buffer plate; 140-first sleeve; 150-upper return spring; 160-support rod; 170-first buffer plate; 180-float; 190-first electromagnetic coil; 210-magnetorheological damping fluid; 220-first sealing ring; 230-second sealing ring; 240-delivery pipeline; 250-second electromagnetic coil. DETAILED DESCRIPTION

[0035] The terms "first", "second", "third", etc. are only used to distinguish and describe, and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] In the description of this application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0038] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connect" 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, or it can be a connection between the internal parts of two elements.

[0039] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings.

[0040] Example

[0041] Reference Figures 1-4The present invention provides a vibration reduction and impact protection device for a conveying pipeline based on magnetorheological damping, comprising a first sealing body 100, a first inner tube 300 being passed through the first sealing body 100, and the first inner tube 300 and the first sealing body 100 being able to slide relative to each other; the first inner tube 300 is used to be sleeved on the conveying pipeline 240;

[0042] A support rod 160 is provided on the first sealing body 100 , and an extending direction of the support rod 160 is perpendicular to an extending direction of the first inner tube 300 ;

[0043] The lower end of the support rod 160 is passed through the second sealing body 200, and the support rod 160 and the second sealing body 200 can slide relative to each other;

[0044] A first buffer plate 170 is provided in the second sealing body 200 , and an upper end surface of the first buffer plate 170 is connected to the support rod 160 ;

[0045] The first sealing body 100 is filled with magnetorheological damping fluid 210 , and the first buffer plate 170 is embedded with a first electromagnetic coil 190 .

[0046] In some embodiments, a first inner tube 300 is passed through the first sealing body 100 of the conveying pipeline vibration reduction and impact protection device based on magnetorheological damping, and the first inner tube 300 and the first sealing body 100 are arranged to slide relative to each other; the conveying pipeline 240 is passed through the first inner tube 300, and a plurality of fasteners are provided on the first inner tube 300, so that the first inner tube 300 can be fixed to the conveying pipeline 240; the first inner tube 300 and the conveying pipeline 240 move synchronously relative to the first sealing body 100 along the extension direction of the first inner tube 300.

[0047] A support rod 160 is provided at the lower end of the first sealing body 100, and the extension direction of the support rod 160 is perpendicular to the extension direction of the first inner tube 300. When the conveying pipe 240 vibrates up and down, the first sealing body 100 drives the support rod 160 to extend and retract, so that the first buffer plate 170 on the support rod 160 rises and falls in the second sealing body 200; the second sealing body 200 is filled with magnetorheological damping fluid 210, and a first electromagnetic coil 190 is embedded in the first buffer plate 170; the change in the current intensity of the first electromagnetic coil 190 causes the magnetorheological damping fluid 210 to undergo physical changes, thereby enabling the magnetorheological damping fluid 210 to generate sufficient resistance to the first buffer plate 170, thereby enabling the first buffer plate 170 to reduce the vibration of the first sealing body 100, thereby achieving vibration reduction of the vertical vibration of the conveying pipe 240 and improving the service life of the conveying pipe 240.

[0048] In an optional embodiment, the first sealing body 100 is filled with a magnetorheological damping fluid 210 , a second buffer plate 130 is provided in the first sealing body 100 , and the second buffer plate 130 is fixed on the first inner tube 300 ;

[0049] A plurality of second flow holes are provided on the second buffer plate 130 , and the second flow holes are used to allow the magnetorheological damping fluid 210 on one side of the second buffer plate 130 to flow to the other side of the second buffer plate 130 ;

[0050] A plurality of first sleeves 140 are provided on the second buffer plate 130 , and the first sleeves 140 are all arranged parallel to the first inner tube 300 , and both ends of the first sleeves 140 are connected to the inner wall of the first sealing body 100 ;

[0051] Two upper return springs 150 are sleeved on the first sleeve 140 , and the second buffer plate 130 is located between the two upper return springs 150 . One end of the upper return spring 150 abuts against the second buffer plate 130 , and the other end abuts against the inner wall of the first sealing body 100 .

[0052] A second electromagnetic coil 250 is disposed in the first sealing body 100 , and / or a second electromagnetic coil 250 is disposed in the first sleeve 140 .

[0053] In some embodiments, the first sealing body 100 is filled with magnetorheological damping fluid 210, and the second buffer plate 130 is arranged in the first sealing body 100; the second buffer plate 130 is sleeved on the first inner tube 300 and fixed to the first inner tube 300; in this way, the second buffer plate 130 can move synchronously with the first inner tube 300.

[0054] A second electromagnetic coil 250 is disposed in the first sealing body 100 . The second electromagnetic coil 250 may be disposed at other locations in the second sealing body 200 or in the first sleeve 140 .

[0055] Multiple first sleeves 140 are arranged parallel to the first inner tube 300. The first sleeves 140 can also guide the second buffer plate 130 to move along the first inner tube 300. Multiple first sleeves 140 are all installed on the second buffer plate 130, and the second buffer plate 130 can move relative to the first sleeve 140.

[0056] Two upper return springs 150 are sleeved on the first sleeve 140, and the second buffer plate 130 is located between the two upper return springs 150; the two upper return springs 150 cooperate to reset the second buffer plate 130 when there is no current in the second electromagnetic coil 250, thereby enabling the stable operation of the conveying pipeline vibration reduction and anti-impact device based on magnetorheological damping.

[0057] The gap between the second buffer plate 130 and the inner wall of the first sealing body 100 is small, so multiple flow holes need to be set on the second buffer plate 130. In this way, during the movement of the second buffer plate 130, the magnetorheological damping fluid 210 can flow through the flow holes, ensuring that the second buffer plate 130 can move inside the first sealing body 100.

[0058] There is a certain gap between the first buffer plate 170 and the inner wall of the second sealing body 200 , so that the magnetorheological damping fluid 210 can flow from the side of the first buffer plate 170 during the lifting and lowering process of the first buffer plate 170 .

[0059] In an optional embodiment, a thermal insulation layer is provided in the first inner tube 300 , and the thermal insulation layer wraps the delivery pipe 240 .

[0060] The first inner tube 300 has a heat-insulating layer therein. The heat-insulating layer is made of a polyurethane cold-insulating material and is wrapped around the outside of the delivery pipe 240 .

[0061] In an optional embodiment, two first assembly holes that are opposite to each other are provided on the first sealing body 100 , and a first sealing ring 220 is provided in the first assembly hole; the first sealing ring 220 is sleeved on the first inner tube 300 .

[0062] In order to prevent the magnetorheological damping fluid 210 in the first sealing body 100 from overflowing from the first assembly port, a first sealing ring 220 is provided at the first assembly port. The first sealing ring 220 is sleeved on the first inner tube 300. The first sealing ring 220 seals the gap between the first inner tube 300 and the inner wall of the first assembly port to prevent the magnetorheological damping fluid 210 from overflowing from the first assembly port.

[0063] In an optional embodiment, a second assembly port is provided on the second sealing body 200 , the support rod 160 is assembled on the second assembly port, a second sealing ring 230 is provided on the second assembly port, and the second sealing ring 230 is sleeved on the support rod 160 .

[0064] Reference Figure 2 In an optional embodiment, a float 180 is provided on the lower end surface of the first buffer plate 170 .

[0065] In an optional embodiment, a support frame 400 is provided on the second sealing body 200 .

[0066] In some embodiments, a second assembly port is provided at the upper end of the second sealing body 200, the support rod 160 is assembled at the second assembly port, the second sealing ring 230 is provided at the second assembly port, and the second sealing ring 230 is sleeved on the support rod 160 to ensure that the magnetorheological damping fluid 210 does not flow out from the gap between the second assembly port and the support rod 160.

[0067] A float 180 is provided on the first buffer plate 170. The float 180 has a certain volume but a light mass. In this way, the float 180 can give the first buffer plate 170 an upward force, making it easier for the first buffer plate 170 to reset and provide a buffer against vibration.

[0068] A support frame 400 is provided at the lower end of the second sealing body 200 , and the support frame 400 is used to support the second sealing body 200 .

[0069] In an optional embodiment, an upper limit baffle 110 is provided on the support rod 160, and a lower return spring 120 is sleeved on the support rod 160, one end of the lower return spring 120 abuts against the upper limit baffle 110, and the other end abuts against the second sealing body 200.

[0070] An upper limit baffle 110 is provided on the support rod 160. One end of the lower return spring 120 mounted on the support rod 160 abuts against the upper limit baffle 110, and the other end abuts against the second sealing body 200. When the support rod 160 moves downward, the lower return spring 120 can give the support rod 160 an upward force, which is beneficial to the vibration reduction of the support rod 160 and resets the support rod 160.

[0071] In an optional embodiment, a distance sensor 800 is provided on the upper limit stopper 110 , and a first adjustment component 700 is provided on the second sealing body 200 . The first adjustment component 700 is used to adjust the current intensity of the first electromagnetic coil 190 ;

[0072] A vibration sensor 600 is provided on the first inner tube 300 , and a second adjustment component 500 is provided on the first sealing body 100 . The second adjustment component 500 is used to adjust the current intensity and on-off of the second electromagnetic coil 250 .

[0073] The control assembly 900 is further included. The control assembly 900 is connected to the first adjustment assembly 700 and the second adjustment assembly 500 respectively. The control assembly 900 is used to control the first adjustment assembly 700 and the second adjustment assembly 500.

[0074] In some embodiments, a distance sensor 800 is provided on the upper limit baffle 110, and the distance sensor 800 is used to measure the distance between the upper limit baffle 110 and the second sealing body 200; a first adjustment component 700 is provided on the second sealing body 200, and the first adjustment component 700 is used to adjust the current intensity of the first electromagnetic coil 190, thereby changing the physical properties of the magnetorheological damping fluid 210 in the second sealing body 200, so that the upper limit baffle 110 moves within a suitable range, so that the support rod 160 moves within a suitable range, thereby achieving a better vibration reduction effect.

[0075] A second adjustment component 500 is provided on the first sealing body 100, and a vibration sensor 600 is provided on the first inner tube 300. The second adjustment component 500 is used to adjust the current intensity and the on-off state of the second electromagnetic coil 250, thereby achieving axial and vertical vibration damping of the first inner tube 300 under different vibration intensities.

[0076] The control module includes a signal processing module, a signal acquisition module, a feedback processing module and a signal transmission module. The signal acquisition module is used to collect the signals sent by the vibration sensor 600 and the distance sensor 800 and send the signals to the signal processing module. The signal processing module calculates the vibration change rate of the axial vibration collected by the vibration sensor 600 and the distance change rate collected by the distance sensor 800 respectively. The signal processing module interpolates the vibration change rate of the axial vibration and the distance change rate collected by the distance sensor 800 and then sends a control signal to the feedback processing module and the signal transmission module. The feedback processing module is used to convert the control signal sent by the signal processing module into an electrical signal and send it to the first adjustment component 700 and the second adjustment component 500, thereby realizing the adjustment of the current size and on-off of the first electromagnetic coil 190 and the second electromagnetic coil 250. The signal transmission module is used to synchronously upload the signals received and sent by the signal processing module to the cloud platform, so as to facilitate technical personnel to monitor the device.

[0077] Magnetorheological material is a kind of "smart material". It is generally a suspension formed by micron- or nano-scale ferromagnetic particles (usually carbonyl iron particles) immersed in a non-magnetic carrier liquid, and also contains a small amount of other auxiliary solutions. Depending on the carrier liquid, it can be divided into magnetorheological fluid and magnetorheological grease. The volume fraction of ferromagnetic particles in magnetorheological material is usually between 20% and 40%. Its rheological properties can be controlled by an external magnetic field. The performance of magnetorheological material varies with the intensity of the magnetic field. This characteristic of magnetorheological material is called magnetorheological effect.

[0078] In the existing technology, LNG pipeline vibration reduction is conventionally achieved by using elastomers, such as springs and rubber products. However, elastomers can only cushion the vibration and impact of the pipeline and cannot automatically adjust the vibration damping according to the vibration frequency. They also cannot achieve impact protection against transient forces such as water hammer.

[0079] The conveying pipeline vibration reduction and impact protection device based on magnetorheological damping can adjust the current intensity of the first electromagnetic coil 190 and the second electromagnetic coil 250 according to actual conditions, so as to quickly reduce the vibration of the conveying pipeline 240 in the axial and radial directions until it is reset to a stationary state, thereby achieving vibration reduction and impact protection.

[0080] Reference Figure 5 The present invention provides a control system for a pipeline vibration reduction and impact protection device based on magnetorheological damping, comprising a control component 900, a vibration sensor 600, and a distance sensor 800; the control component 900 is connected to the vibration sensor 600, the distance sensor 800, the first adjustment component 700, and the second adjustment component 500, respectively;

[0081] The vibration sensor 600 is provided on the first inner tube 300 for detecting the vibration of the first inner tube 300; the distance sensor 800 is provided on the upper limit baffle 110 for measuring the distance between the upper limit baffle 110 and the second sealing body 200;

[0082] The control component 900 includes a signal processing module, a signal acquisition module, a feedback processing module and a signal transmission module; the signal acquisition module is used to collect signals sent by the vibration sensor 600 and the distance sensor 800 and send the signals to the signal processing module, the signal processing module calculates the vibration change rate of the axial vibration collected by the vibration sensor 600 and the distance change rate collected by the distance sensor 800 respectively, the signal processing module calculates the difference between the vibration change rate of the axial vibration and the distance change rate collected by the distance sensor 800 and then sends a control signal to the feedback processing module and the signal transmission module, the feedback processing module is used to convert the control signal sent by the signal processing module into an electrical signal and send it to the first adjustment component 700 and the second adjustment component 500; the first adjustment component 700 is used to adjust the current size and on-off of the first electromagnetic coil 190, and the second adjustment component 500 is used to adjust the current size and on-off of the second electromagnetic coil 250.

[0083] The control system of the conveying pipeline vibration reduction and impact protection device based on magnetorheological damping provided by the present invention can adjust the current of the first electromagnetic coil 190 and the second electromagnetic coil 250 in real time according to the axial vibration and vertical vibration of the first inner tube 300, change the physical properties of the magnetorheological damping fluid 210 in the first sealing body 100 and the second sealing body 200, so that the conveying pipeline vibration reduction and impact protection device based on magnetorheological damping can adjust the vibration damping according to the vibration frequency, and quickly reduce the vibration of the conveying pipeline 240 in the axial and radial directions until it is reset to a stationary state, thereby achieving vibration reduction and impact protection.

[0084] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration reduction and impact prevention device for a conveying pipeline based on magnetorheological damping, characterized in that: The invention comprises a first sealing body (100), a first inner tube (300) is provided on the first sealing body (100), and the first inner tube (300) and the first sealing body (100) are capable of sliding relative to each other; the first inner tube (300) is used to be sleeved on the conveying pipe (240); A support rod (160) is provided on the first sealing body (100), and an extending direction of the support rod (160) is perpendicular to an extending direction of the first inner tube (300); The lower end of the support rod (160) is penetrated by the second sealing body (200), and the support rod (160) and the second sealing body (200) are capable of sliding relative to each other; A first buffer plate (170) is provided in the second sealing body (200), and an upper end surface of the first buffer plate (170) is connected to the support rod (160); The second sealing body (200) is filled with magnetorheological damping fluid (210), and the first buffer plate (170) is embedded with a first electromagnetic coil (190).

2. The transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping according to claim 1 is characterized in that: The first sealing body (100) is filled with magnetorheological damping fluid (210), a second buffer plate (130) is provided in the first sealing body (100), and the second buffer plate (130) is fixed on the first inner tube (300); A plurality of second flow holes are provided on the second buffer plate (130), and the second flow holes are used to allow the magnetorheological damping fluid (210) on one side of the second buffer plate (130) to flow to the other side of the second buffer plate (130); A plurality of first sleeves (140) are provided on the second buffer plate (130), and the first sleeves (140) are all arranged in parallel with the first inner tube (300), and both ends of the first sleeves (140) are connected to the inner wall of the first sealing body (100); Two upper return springs (150) are sleeved on the first sleeve (140), the second buffer plate (130) is located between the two upper return springs (150), one end of the upper return spring (150) abuts against the second buffer plate (130), and the other end abuts against the inner wall of the first sealing body (100); A second electromagnetic coil (250) is provided in the first sealing body (100), and / or a second electromagnetic coil (250) is provided in the first sleeve (140).

3. The transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping according to claim 1 is characterized in that: A heat-insulating layer is provided in the first inner tube (300), and the heat-insulating layer wraps the conveying pipe (240).

4. The transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping according to claim 1 is characterized in that: Two first assembly holes arranged opposite to each other are provided on the first sealing body (100), and a first sealing ring (220) is provided in the first assembly hole; the first sealing ring (220) is sleeved on the first inner tube (300).

5. The transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping according to claim 1 is characterized in that: The second sealing body (200) is provided with a second assembly opening, the support rod (160) is assembled on the second assembly opening, a second sealing ring (230) is provided on the second assembly opening, and the second sealing ring (230) is sleeved on the support rod (160).

6. The transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping according to claim 1 is characterized in that: A float (180) is provided on the lower end surface of the first buffer plate (170).

7. The transmission pipeline vibration reduction and impact protection device based on magnetorheological damping according to claim 1 is characterized in that: A support frame (400) is provided on the second sealing body (200).

8. The transmission pipeline vibration reduction and impact prevention device based on magnetorheological damping according to claim 2 is characterized in that: An upper limit baffle (110) is provided on the support rod (160), and a lower return spring (120) is sleeved on the support rod (160). One end of the lower return spring (120) abuts against the upper limit baffle (110), and the other end abuts against the second sealing body (200).

9. The transmission pipeline vibration reduction and impact protection device based on magnetorheological damping according to claim 8 is characterized in that: A distance sensor (800) is provided on the upper limit baffle (110), and a first adjustment component (700) is provided on the second sealing body (200), wherein the first adjustment component (700) is used to adjust the current intensity of the first electromagnetic coil (190); A vibration sensor (600) is provided on the first inner tube (300), and a second adjustment component (500) is provided on the first sealing body (100), wherein the second adjustment component (500) is used to adjust the current intensity of the second electromagnetic coil (250); The invention also includes a control component (900), wherein the control component (900) is connected to the first adjustment component (700) and the second adjustment component (500), respectively, and the control component (900) is used to control the first adjustment component (700) and the second adjustment component (500).

10. A control system for a pipeline vibration reduction and impact prevention device based on magnetorheological damping, characterized in that: The invention comprises a control component (900), a vibration sensor (600) and a distance sensor (800); the control component (900) is connected to the vibration sensor (600), the distance sensor (800), the first adjustment component (700) and the second adjustment component (500) respectively; The vibration sensor (600) is arranged on the first inner tube (300) and is used to detect the vibration of the first inner tube (300); the distance sensor (800) is arranged on the upper limit baffle (110) and is used to measure the distance between the upper limit baffle (110) and the second sealing body (200); The control component (900) comprises a signal processing module, a signal acquisition module, a feedback processing module and a signal transmission module; the signal acquisition module is used to acquire signals sent by the vibration sensor (600) and the distance sensor (800) and send the signals to the signal processing module; the signal processing module respectively calculates the vibration change rate of the axial vibration collected by the vibration sensor (600) and the distance change rate collected by the distance sensor (800); the signal processing module calculates the difference between the vibration change rate of the axial vibration and the distance change rate collected by the distance sensor (800) and sends a control signal to the feedback processing module and the signal transmission module; the feedback processing module is used to convert the control signal sent by the signal processing module into an electrical signal and send it to the first adjustment component (700) and the second adjustment component (500); the first adjustment component (700) is used to adjust the current size and on-off of the first electromagnetic coil (190); the second adjustment component (500) is used to adjust the current size and on-off of the second electromagnetic coil (250).

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