Pipeline vibration detection device and method

Abstract

The invention relates to the technical field of oil and gas exploitation, and provides a pipeline vibration detection device and method. A fixing frame; one end of the probe assembly is movably connected with the fixing frame, and the other end of the probe assembly is used for abutting against a to-be-detected pipeline; one end of the elastic element is connected with the probe assembly, and the other end of the elastic element is connected with the fixing frame; the probe assembly can keep abutting against a to-be-tested pipeline under the action of the elastic force of the elastic element. The pointer is connected with the probe assembly through a transmission mechanism, and the probe assembly moves relative to the fixing frame and can drive the pointer to move. The pipeline vibration monitoring device can overcome the defects that in the prior art, a pipeline vibration monitoring tool is lacked, workers are difficult to accurately master vibration parameters of a pipeline, and therefore the safety of pipeline transportation and the effectiveness of vibration reduction measures are difficult to ensure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas exploitation, and particularly relates to a pipeline vibration detection device and method. BACKGROUND

[0002] In the technical field of oil and gas exploitation, the production and transportation process generally includes two modes of gas-liquid wet gas mixed transportation and gas-liquid separated transportation; and when transporting gas or liquid, pipeline transportation is mainly used, and various pump bodies such as centrifugal pumps and reciprocating pumps are used to drive the gas or liquid; for example, when transporting gas field water sewage, a diaphragm pump is used for pipeline export.

[0003] However, pipeline transportation is affected by terrain, and sometimes the pipeline length is too long and the pipeline height difference is too large, so it is necessary to select a pump body with large stroke and frequency functions, and the vibration and shaking of these pump bodies during operation are strong, which can cause the pipeline to also vibrate and shake greatly, and thus can cause damage to the pipeline, damper, check valve and other equipment. Therefore, in order to ensure the safety of pipeline transportation, some oil and gas exploitation stations have begun to modify the vibration of the transportation pipeline, but there is a lack of tools for detecting pipeline vibration in the prior art, and it is difficult for workers to accurately grasp the vibration parameters of the pipeline, so it is difficult to ensure the safety of pipeline transportation and the effectiveness of the vibration reduction measures. SUMMARY

[0004] The present application aims to overcome the lack of pipeline vibration monitoring tools in the prior art, and the difficulty for workers to accurately grasp the vibration parameters of the pipeline, so as to ensure the safety of pipeline transportation and the effectiveness of the vibration reduction measures, and to provide a pipeline vibration detection device and method.

[0005] In a first aspect, the present application provides a pipeline vibration detection device, comprising:

[0006] a fixed frame;

[0007] a probe assembly, one end of the probe assembly being movably connected to the fixed frame, and the other end of the probe assembly being used for abutting against a pipeline to be measured;

[0008] a resilient element, one end of the resilient element being connected to the probe assembly, and the other end of the resilient element being connected to the fixed frame; the resilient element can keep the probe assembly abutting against the pipeline to be measured;

[0009] a pointer, the pointer being connected to the probe assembly through a transmission mechanism, and the movement of the probe assembly relative to the fixed frame can drive the movement of the pointer.

[0010] The movable connection between the probe assembly and the fixed frame, such as the sliding connection of the probe assembly to the fixed frame, and the sliding direction of the sliding connection is along the direction of approaching or moving away from the pipeline to be measured, or the swing connection of the probe assembly to the fixed frame, and the swing axis is parallel to the axis of the pipeline to be measured; the specific structure of the movable connection includes but is not limited to setting a slide rail, a linear bearing, a pulley or a rolling body between the probe assembly and the fixed frame.

[0011] The elastic element includes but is not limited to a rubber block, a coil spring, a disc spring, and a gas spring.

[0012] The transmission mechanism includes but is not limited to a planar linkage mechanism, a wheel train transmission mechanism, a hydraulic transmission mechanism, or directly fixing the pointer to the probe assembly, as long as it can convert the movement of the probe assembly into the movement of the pointer; the movement of the pointer includes but is not limited to movement and rotation.

[0013] The probe assembly can be kept abutting the pipeline to be measured under the action of the elastic force of the elastic element; that is, when the present scheme is connected to the pipeline to be measured, the elastic force direction of the elastic element is directed to the pipeline to be measured.

[0014] When the pipeline vibration detection device of the present scheme is used to detect the vibration of the pipeline to be measured, the fixed frame is first fixed relative to the ground, and the probe assembly can abut the pipeline to be measured; when the pipeline vibrates, the probe assembly can be kept abutting the pipeline to be measured under the action of the elastic force of the elastic element, so as to convert the vibration of the pipeline to be measured into the displacement of the probe assembly, and then convert it into the displacement of the pointer through the transmission mechanism; the worker can quantitatively judge the vibration condition of the pipeline to be measured by observing the displacement of the pointer.

[0015] Preferably, the transmission mechanism includes a rack and a gear, the rack is connected with the probe assembly, the gear is connected with the pointer, and the gear and the rack are meshed with each other.

[0016] The present scheme preferably uses a gear and a rack as the probe assembly, which can convert the linear displacement of the probe assembly into the rotation of the pointer, and compared with other transmission mechanisms, such as a planar linkage structure, the movement of the gear and rack mechanism is more explicit, which can greatly simplify the design difficulty and the mechanism complexity of the present scheme, thereby reducing the design and manufacturing costs of the present scheme; and the gear and rack mechanism is also easier to adjust the gear ratio and the diameter size of the gear, so as to increase the ratio of the rotation angle of the gear to the translation distance of the rack, that is, the displacement of the probe assembly can be amplified on the pointer, thereby obtaining higher measurement accuracy.

[0017] Preferably, the length of the probe assembly is adjustable.

[0018] The present scheme can adjust the length of the probe assembly to make the probe assembly approach or move away from the pipeline to be measured without moving the fixed frame, until the probe assembly abuts the pipeline to be measured, so as to make the present scheme adapt to different sizes of the pipeline to be measured, and improve the efficiency of the worker in adjusting the position of the probe assembly.

[0019] Preferably, the probe assembly comprises an abutting part, a connecting part, and a first locking structure; the abutting part is used to abut the pipeline to be detected; the connecting part is movably connected with the fixing frame; the first locking structure is arranged between the abutting part and the connecting part, and is used to lock or unlock the movement freedom degree between the abutting part and the connecting part.

[0020] The specific form of the first locking structure comprises but is not limited to a friction type, for example, a threaded connector is connected on one of the abutting part and the connecting part, and rotating the threaded connector can make the threaded connector abut or separate from the other one of the abutting part and the connecting part, so as to lock or unlock the movement freedom degree between the abutting part and the connecting part; a latch type, for example, a plurality of groups of insertion holes are arranged at intervals on one of the abutting part and the connecting part, a detachable latch is connected on the other one of the abutting part and the connecting part, and the movement of the abutting part relative to the connecting part can make the latch sequentially align with each insertion hole, and inserting or removing the latch can lock or unlock the movement freedom degree between the abutting part and the connecting part at each different position.

[0021] The scheme recommends one specific structure form of the length-adjustable probe assembly, and the structure has the first locking structure, which can prevent the length of the probe assembly from unexpectedly changing during detection, so as to cause the accuracy of the detection result to be negatively affected.

[0022] Preferably, the number of the probe assemblies is greater than one, and the probe assemblies are arranged in axial symmetry or central symmetry relative to the axis of the pipeline to be detected.

[0023] For the pointer, two or more probe assemblies can be connected to the same pointer through a transmission mechanism, or an independent pointer can be arranged for each probe assembly.

[0024] The scheme can make the detection result more reliable by simultaneously detecting the vibration of the pipeline to be detected through a plurality of probe assemblies, and effectively reduces the influence of random errors and abnormal values caused by various factors such as instrument errors, environmental changes, and operation errors.

[0025] Preferably, the fixing frame comprises a ring-shaped frame and a mounting base; the ring-shaped frame can be sleeved on the outside of the pipeline to be detected; the mounting base is connected with the ring-shaped frame, the position of the mounting base on the ring-shaped frame is adjustable, and the probe assembly is connected with the mounting base.

[0026] The specific shape of the ring-shaped frame comprises but is not limited to a circular ring, a square ring, and a polygonal ring.

[0027] The position of the mounting base along the length of the annular frame is adjustable. This can be achieved in ways including, but not limited to, setting multiple mounting positions along the length of the annular frame and installing the mounting base in different positions to adjust its position; or setting a slide rail along the length of the annular frame and sliding the mounting base to the slide rail.

[0028] This design incorporates a ring frame and an adjustable mounting base. When connected to the pipe to be tested, adjusting the position of the mounting base on the ring frame adjusts the position of the probe assembly against the pipe, thus adapting to different testing requirements.

[0029] This solution also allows the probe assembly to contact the pipe under test by adjusting the position of the mounting base on the annular frame without moving the fixed frame. This enables the solution to be adapted to pipes of different sizes and specifications and improves the efficiency of operators in adjusting the position of the probe assembly.

[0030] Preferably, the mounting base is slidably connected to the annular frame; a second locking structure is provided between the mounting base and the annular frame, which is used to lock or unlock the degree of freedom of movement between the mounting base and the annular frame.

[0031] The specific forms of the second locking structure include, but are not limited to, friction type, such as connecting a threaded connector to one of the annular frame and the mounting base, rotating the threaded connector can cause the threaded connector to abut or separate from the other of the annular frame and the mounting base, thereby locking or unlocking the degree of freedom of movement between the mounting base and the annular frame; and pin type, such as providing multiple sets of sockets at intervals on one of the annular frame and the mounting base, and detachably connecting a pin to the other of the annular frame and the mounting base, and the movement of the mounting base relative to the annular frame can cause the pin to align with each socket in sequence, and inserting or removing the pin can lock or unlock the degree of freedom of movement between the mounting base and the annular frame at different positions.

[0032] This solution recommends one specific connection method between the mounting base and the ring frame. This connection method has a second locking structure, which can prevent unexpected changes in the position of the mounting base during the testing process, thereby preventing negative impacts on the accuracy of the testing results.

[0033] Preferably, the annular frame comprises at least two segments along its length, and adjacent segments are detachably connected.

[0034] The ring frame comprises at least two segments along its length. For example, for a circular ring frame, it can be obtained by detachably connecting two semi-circular segments or by detachably connecting three 1 / 3 arc-shaped segments.

[0035] Detachable connections include, but are not limited to, threaded connections, mortise and tenon connections, and snap-fit ​​connections.

[0036] The ring frame of this solution contains multiple detachable segments. When connecting with the pipeline to be tested, each segment of the ring frame can be disconnected and placed at the predetermined testing position of the pipeline to be tested. Then, the segments can be connected to each other to form a ring frame and the pipeline to be tested can be located in the center of the ring frame, making the connection between this solution and the pipeline to be tested more convenient.

[0037] In a second aspect, the present invention provides a method for detecting pipeline vibration, comprising the following steps:

[0038] S1. Connect the mounting frame of the pipe vibration detection device of the present invention to the ground or wall; adjust the position of the probe assembly so that the end of the probe assembly away from the mounting frame abuts against the pipe to be tested;

[0039] S2. Start the conveying operation of the pipeline under test, record the movement of the pointer, and calculate the vibration parameters of the pipeline under test based on the movement of the pointer.

[0040] The vibration parameters of the pipe under test include, but are not limited to, amplitude, period, frequency, and phase. The specific method for calculating the vibration parameters of the pipe under test based on the movement of the pointer depends on the specific structure of the transmission mechanism. For example, if the transmission mechanism adopts a gear train transmission mechanism, the movement of the pointer can be converted into the vibration of the pipe under test based on the transmission ratio of the gear train transmission mechanism. For the connection method where the pointer is directly fixed to the probe assembly, the movement of the pointer can be directly equated to the vibration of the pipe under test.

[0041] The pipeline vibration detection method of this solution, by using the pipeline vibration detection device of this invention, can convert the vibration of the pipeline under test into the displacement of a pointer, making it easier for staff to quantitatively judge the vibration status of the pipeline under test.

[0042] Preferably, when the length of the probe assembly is adjustable and the number of probe assemblies is greater than one, the following steps are included before step S2:

[0043] Adjust the length of each probe assembly until the pointer reading returns to zero.

[0044] When multiple probe assemblies are present, the initial positions of each probe assembly relative to the pipe under test may differ, resulting in differences in the initial phase of each probe assembly. This can easily lead to jamming or even damage of the transmission mechanism, and can also cause the test results to deviate from the actual situation. Therefore, this solution recommends that before conducting vibration testing, the length of each probe assembly be adjusted until the pointer reading returns to zero, thereby ensuring that the initial phase of each probe assembly is consistent, and thus ensuring the normal operation of the transmission mechanism and the reliability of the test results.

[0045] Compared with existing technologies, the advantages of this invention are as follows:

[0046] 1. This invention provides a pipeline vibration detection device, which uses an elastic element to keep the probe assembly against the pipeline to be tested, and uses a transmission mechanism to connect a pointer to the probe assembly. The vibration of the pipeline to be tested can be converted into the displacement of the probe assembly, and then converted into the displacement of the pointer through the transmission mechanism. The operator can quantitatively judge the vibration of the pipeline to be tested by observing the displacement of the pointer.

[0047] 2. This invention provides a pipeline vibration detection method. By using the pipeline vibration detection device of this invention, the vibration of the pipeline under test can be converted into the displacement of a pointer, making it easier for staff to quantitatively judge the vibration of the pipeline under test. Attached Figure Description

[0048] Figure 1 This is a front view schematic diagram of a pipeline vibration detection device of the present invention connected to the pipeline under test.

[0049] Figure 2 This is a front view schematic diagram of the annular frame structure of a pipeline vibration detection device according to the present invention;

[0050] Figure 3 This is a partial front view of the probe assembly of a pipeline vibration detection device according to the present invention;

[0051] Figure 4 This is a partial front view schematic diagram of the pipeline vibration detection device of the present invention at the gear and rack.

[0052] Figure 5 This is a front view schematic diagram of the fixed base of a pipeline vibration detection device according to the present invention;

[0053] Figure 6 This is a top view of the fixed base of a pipeline vibration detection device according to the present invention.

[0054] Icons: 1-Fixed bracket; 11-Ring frame; 111-Segment; 12-Mounting base; 13-Fixed base; 131-Oval hole; 2-Probe assembly; 21-Abutting part; 22-Connecting part; 3-Elastic element; 4-Pointer; 51-Gear; 52-Rack; 6-Test pipe; 71-First locking structure; 72-Second locking structure. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0056] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0057] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0058] Furthermore, the use of terms such as "first," "second," "third," etc. in terminology is merely for distinguishing identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0059] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0060] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0061] Example 1

[0062] like Figures 1 to 6 As shown, a pipe vibration detection device includes a fixed frame 1, a probe assembly 2, an elastic element 3, and a pointer 4. One end of the probe assembly 2 is movably connected to the fixed frame 1, and the movable connection includes a degree of freedom of movement along the direction of approaching or moving away from the pipe 6 to be tested. The other end of the probe assembly 2 is used to abut against the pipe 6 to be tested. One end of the elastic element 3 is connected to the probe assembly 2, and the other end of the elastic element 3 is connected to the fixed frame 1. The probe assembly 2 can remain abut against the pipe 6 to be tested under the action of the elastic force of the elastic element 3. The pointer 4 is connected to the probe assembly 2 through a transmission mechanism, and the movement of the probe assembly 2 relative to the fixed frame 1 can drive the pointer 4 to move.

[0063] To facilitate understanding of this embodiment, Figures 1 to 6 The view directions are marked, with arrows X, Y, and Z perpendicular to each other; arrow X represents the transverse direction along the pipe 6 to be measured, arrow Y represents the height direction along the pipe 6 to be measured, and arrow Z represents the axial direction along the pipe 6 to be measured.

[0064] In an optional embodiment, the transmission mechanism includes a rack 52 and a gear 51, with the rack 52 connected to the probe assembly 2 and the gear 51 connected to the pointer 4, and the gear 51 meshing with the rack 52.

[0065] In an optional implementation, the length of the probe assembly 2 along the direction of approaching or moving away from the pipe 6 to be tested is adjustable.

[0066] In an optional embodiment, the probe assembly 2 includes an abutment portion 21, a connecting portion 22, and a first locking structure 71; the abutment portion 21 is used to abut against the test pipe 6, the connecting portion 22 is movably connected to the fixing frame 1, and the abutment portion 21 and the connecting portion 22 are slidably connected, with the sliding connection direction along the direction of approaching or moving away from the test pipe 6; the first locking structure 71 is disposed between the abutment portion 21 and the connecting portion 22, and the first locking structure 71 is used to lock or unlock the degree of freedom of movement between the abutment portion 21 and the connecting portion 22.

[0067] In an optional embodiment, the abutment 21 is a columnar member and the connecting part 22 is a cylindrical member. The abutment 21 is sleeved on the connecting part 22, so that the connecting part 22 can completely support the abutment 21 along the circumference of the abutment 21, thereby giving the abutment 21 better stability and suppressing the deviation of the detection result caused by the shaking of the abutment 21 relative to the connecting part 22.

[0068] In optional implementations, such as Figure 3As shown, the first locking structure 71 includes a flat-head bolt; the connecting part 22 has a threaded through hole; the flat-head bolt is threaded into the threaded through hole, and rotating the flat-head bolt can cause the flat-head bolt to move along the axis of the threaded through hole, thereby pressing against the abutting part 21 or separating from the abutting part 21, thereby locking or unlocking the degree of freedom of movement between the connecting part 22 and the abutting part 21.

[0069] In an optional embodiment, the number of probe assemblies 2 is greater than one, and the probe assemblies 2 are distributed in an axisymmetric or centrosymmetric manner relative to the axis of the pipe to be tested 6.

[0070] In an optional implementation, at least two probe assemblies 2 are connected to the same pointer 4 via a transmission mechanism; such as Figure 4 As shown, taking the transmission mechanism with two gears 51, racks 52, and probe assemblies 2 as an example, the racks 52 corresponding to the probe assemblies 2 on the left and right sides are respectively connected to the opposite sides of the gear 51, so that the rotation of the gear 51 depends on the movement of the two racks 52 at the same time. That is, the movement of the pointer 4 is obtained by the combination of the movements of the two probe assemblies 2. This can eliminate the need to manually synthesize the movements of multiple probe assemblies 2 when calculating the vibration of the pipe 6 under test in the later stage, thereby simplifying the calculation of the vibration parameters of the pipe 6 under test.

[0071] In an optional embodiment, the fixing frame 1 includes an annular frame 11 and a mounting base 12. The annular frame 11 can be fitted onto the outside of the pipe 6 to be tested. The mounting base 12 is connected to the annular frame 11, and the position of the mounting base 12 along the length of the annular frame 11 is adjustable. The probe assembly 2 is connected to the mounting base 12.

[0072] In an optional embodiment, the mounting base 12 is slidably connected to the annular frame 11; a second locking structure 72 is provided between the mounting base 12 and the annular frame 11, the second locking structure 72 being used to lock or unlock the degree of freedom of movement between the mounting base 12 and the annular frame 11.

[0073] In optional implementations, such as Figure 3 As shown, the second locking structure 72 includes a flat-head bolt; the mounting base 12 has a threaded through hole; the flat-head bolt is threaded into the threaded through hole, and rotating the flat-head bolt can cause the flat-head bolt to move along the axis of the threaded through hole, thereby pressing against the annular frame 11 or separating from the annular frame 11, thereby locking or unlocking the degree of freedom of movement between the mounting base 12 and the annular frame 11.

[0074] In optional implementations, such as Figure 2 As shown, the specific shape of the ring frame 11 is a square ring. Its regular shape is not only easy to manufacture, but also convenient to connect with other structures, such as the mounting base 12, the ground or the wall.

[0075] In an optional embodiment, the annular frame 11 includes at least two segments 111 along its length, and adjacent segments 111 are detachably connected. Figure 2 As shown, taking a square annular frame 11 as an example, the crossbeam at the bottom of the annular frame 11 can be divided into a first segment 111, and the remaining part is used as a second segment 111. When it is necessary to connect the annular frame 11 to the pipe 6 to be tested, the first segment 111 is removed, and the remaining second segment 111 is roughly "∏" shaped. The opening at the bottom of the second segment 111 allows the pipe 6 to be tested to be placed in the middle of the second segment 111. Then the first segment 111 is installed, so that the first segment 111 and the second segment 111 are combined together to form a complete square annular frame 11, which can confine the pipe 6 to be tested inside the annular frame 11.

[0076] In optional implementations, such as Figure 1 , Figure 5 and Figure 6 As shown, the fixing frame 1 also includes a fixing base 13, the bottom surface of which is used to connect with the ground or wall, and the top surface of which is connected to the annular frame 11; furthermore, the bottom surface of the fixing base 13 may be provided with several through-holes for installing threaded connectors or ground anchors, thereby connecting with the ground or wall.

[0077] In optional implementations, such as Figure 6 As shown, the fixing frame 1 and the annular frame 11 are connected by a waist-shaped hole 131, thereby allowing the relative position of the fixing frame 1 and the annular frame 11 to be adjusted along the length direction of the waist-shaped hole 131; the waist-shaped hole 131 can be provided on the fixing frame 1 and / or on the annular frame 11.

[0078] Example 2

[0079] A method for detecting pipeline vibration includes the following steps:

[0080] S1. Connect the mounting frame 1 of the pipe vibration detection device of Embodiment 1 to the ground or wall, for example, fix the mounting base 13 to the ground or wall by ground anchors or expansion bolts; adjust the position of the probe assembly 2, for example, adjust the position of the mounting frame 1 and the annular frame 11 along the length direction of the waist-shaped hole 131, adjust the position of the mounting base 12 along the length direction of the annular frame 11, and adjust the length of the probe assembly 2 so that the end of the probe assembly 2 away from the mounting frame 1 abuts against the pipe 6 to be tested;

[0081] S2. Start the conveying operation of the pipeline under test 6, record the movement of pointer 4, and calculate the vibration parameters of the pipeline under test 6 based on the movement of pointer 4.

[0082] When the length of probe assembly 2 along the direction of approaching or moving away from the pipe 6 to be tested is adjustable, and the number of probe assemblies 2 is greater than one, the following steps are included before step S2:

[0083] Adjust the length of each probe assembly 2 until the reading of pointer 4 returns to zero.

[0084] like Figure 4 As shown, taking the case where the probe assemblies 2 on both sides are connected to the gear 51 via the rack 52, and the pointer 4 is connected to the gear 51 as an example, since the movement of the pointer 4 is a rotational movement in this case, the pointer 4 reading returning to zero means adjusting the length of each probe assembly 2 until the angle between the pointer 4 and the probe assemblies 2 on both sides is equal.

[0085] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipeline vibration detection device, characterized in that, Include: Fixture (1); The probe assembly (2) is movably connected at one end to the fixing frame (1) and at the other end to abut against the test pipe (6). An elastic element (3) is provided, with one end connected to the probe assembly (2) and the other end connected to the fixing frame (1); the elastic element (3) is capable of keeping the probe assembly (2) in contact with the pipe to be tested (6); The pointer (4) is connected to the probe assembly (2) through a transmission mechanism. The movement of the probe assembly (2) relative to the fixing frame (1) can drive the pointer (4) to move.

2. The pipeline vibration detection device according to claim 1, characterized in that, The transmission mechanism includes a rack (52) and a gear (51). The rack (52) is connected to the probe assembly (2), and the gear (51) is connected to the pointer (4). The gear (51) meshes with the rack (52).

3. The pipeline vibration detection device according to claim 1, characterized in that, The length of the probe assembly (2) is adjustable.

4. The pipeline vibration detection device according to claim 3, characterized in that, The probe assembly (2) includes an abutment part (21), a connecting part (22), and a first locking structure (71); the abutment part (21) is used to abut the pipe to be tested (6), the connecting part (22) is movably connected to the fixing frame (1), and the abutment part (21) and the connecting part (22) are slidably connected; the first locking structure (71) is disposed between the abutment part (21) and the connecting part (22), and the first locking structure (71) is used to lock or unlock the degree of freedom of movement between the abutment part (21) and the connecting part (22).

5. A pipeline vibration detection device according to any one of claims 1 to 4, characterized in that, The number of probe assemblies (2) is greater than one, and the probe assemblies (2) are axially or centrally symmetrically distributed relative to the axis of the pipe to be tested (6).

6. A pipeline vibration detection device according to any one of claims 1 to 4, characterized in that, The fixing frame (1) includes an annular frame (11) and a mounting base (12). The annular frame (11) can be fitted onto the outside of the pipe (6) to be tested. The mounting base (12) is connected to the annular frame (11). The position of the mounting base (12) on the annular frame (11) is adjustable. The probe assembly (2) is connected to the mounting base (12).

7. A pipeline vibration detection device according to claim 6, characterized in that, The mounting base (12) is slidably connected to the annular frame (11); a second locking structure (72) is provided between the mounting base (12) and the annular frame (11), the second locking structure (72) being used to lock or unlock the degree of freedom of movement between the mounting base (12) and the annular frame (11).

8. A pipeline vibration detection device according to claim 6, characterized in that, The annular frame (11) comprises at least two segments (111) along its length, and two adjacent segments (111) are detachably connected.

9. A method for detecting pipeline vibration, characterized in that, It includes the following steps: S1. Connect the mounting bracket (1) of the pipeline vibration detection device as described in any one of claims 1 to 8 to the ground or wall; adjust the position of the probe assembly (2) so that the end of the probe assembly (2) away from the mounting bracket (1) abuts against the pipeline (6) to be tested; S2. Start the conveying operation of the pipeline (6) to be tested, record the movement of the pointer (4), and calculate the vibration parameters of the pipeline (6) to be tested based on the movement of the pointer (4).

10. A pipeline vibration detection method according to claim 9, characterized in that, When the length of the probe assembly (2) is adjustable and the number of probe assemblies (2) is greater than one, the following steps are included before step S2: Adjust the length of each of the probe components (2) until the reading of the pointer (4) returns to zero.

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