Anti-interference vibration sensing structure

Abstract

The utility model discloses an anti-interference vibration sensing structure, which belongs to the anti-interference technical field of vibration sensors and comprises a vibration sensor, an output end signal transmission line of the vibration sensor is connected with a controller, and one end of the signal transmission line close to the vibration sensor is sleeved with a magnetic ring. The beneficial effects of the utility model are that one end of the signal transmission line, which is close to the vibration sensor, is sleeved with the magnetic ring, thereby reducing field strong surge interference and strong electromagnetic wave interference, optimizing the normal signal transmission process of the vibration sensor, and improving the stability and accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the field of anti-interference technology for vibration sensors, and more specifically, to an anti-interference vibration sensing structure. Background Technology

[0002] The urea production process involves large units such as compressors, circulating machines, and gas-generating fans. Vibration sensors need to be installed on these large units to monitor their vibration signals in real time. However, in actual production, the vibration signals of the vibration sensors are subject to strong surge interference and strong electromagnetic wave interference on site, which affects the normal signal transmission of the vibration sensors.

[0003] In view of this, the inventor of this utility model conducted in-depth research on this need, which led to the creation of this case. Utility Model Content

[0004] To address the problem that vibration signals from vibration sensors on large-scale urea production units are susceptible to strong surge interference and electromagnetic wave interference, affecting normal signal transmission, this invention provides an anti-interference vibration sensing structure. By adding a magnetic ring at the vibration sensing site, the normal signal transmission of the vibration sensor is improved, ensuring the stability and accuracy of the detection data. The specific technical solution is as follows:

[0005] An anti-interference vibration sensing structure includes a vibration sensor, wherein the output signal transmission line of the vibration sensor is connected to a controller, and a magnetic ring is fitted on the end of the signal transmission line near the vibration sensor.

[0006] Vibration sensors are installed on large units such as compressors, circulating machines, and gas-generating fans to detect the vibration of these units and convert it into signals, which are then transmitted to the controller via signal transmission lines. When the controller receives an abnormal signal, it will take corresponding measures such as alarms or shutdowns. By placing a magnetic ring on the end of the signal transmission line near the vibration sensor, strong surge interference and strong electromagnetic wave interference are reduced, optimizing the normal signal transmission process of the vibration sensor and improving the stability and accuracy of the detection.

[0007] Preferably, four magnetic rings are sequentially fitted along the length of the signal transmission line, with the four magnetic rings touching end to end. Studies have shown that multiple magnetic rings fitted end to end on the signal transmission line provide better anti-interference performance than a single magnetic ring; therefore, four magnetic rings are preferred. Using more magnetic rings than four does not significantly affect the anti-interference effect.

[0008] Preferably, at least one of the four magnetic rings is a magnetic ring with an embedded soft magnetic oxide ring.

[0009] Preferably, all four magnetic rings are magnetic rings with embedded soft magnetic oxide ring bodies.

[0010] Preferably, the magnetic ring is arranged with a first soft magnetic oxygen ring, a second soft magnetic oxygen ring, a third soft magnetic oxygen ring, and a fourth soft magnetic oxygen ring from the outside to the inside. The first and third soft magnetic oxygen rings are located at the lower part of the magnetic ring, and the second and fourth soft magnetic oxygen rings are located at the upper part of the magnetic ring.

[0011] The lower part of the second soft magnetic ferrite ring is located between the first and third soft magnetic ferrite rings, and the upper part of the third soft magnetic ferrite ring is located between the second and fourth soft magnetic ferrite rings. Four soft magnetic ferrite rings are arranged from the inside out within the magnetic ring, with the first and third soft magnetic ferrite rings staggered vertically with the second and fourth soft magnetic ferrite rings to form a multi-layered, staggered anti-interference structure.

[0012] Preferably, the magnetic ring is made entirely of plastic, and four soft magnetic ferrite rings are embedded within it, arranged vertically. The central axis of each soft magnetic ferrite ring coincides with the central axis of the magnetic ring, and the thickness of each soft magnetic ferrite ring is 0.8-2.0 mm. The soft magnetic ferrite rings themselves have good anti-interference properties. This embedded design not only reduces the cost of the magnetic ring and facilitates internal structure design, but also ensures good contact between the external plastic material and the signal transmission line, thus protecting the embedded soft magnetic ferrite rings.

[0013] Preferably, the height h0 of the magnetic ring is 2.0-5.0 cm. Here, four magnetic rings can be set, of which the three magnetic rings closest to the vibration sensor have the same height and size, the fourth magnetic ring has a greater height than the first three magnetic rings, and its outer diameter is smaller than the outer diameter of the first three magnetic rings but larger than the inner diameter of the first three magnetic rings.

[0014] Preferably, the heights of the first, second, third, and fourth soft magnetic oxidant ring bodies are all h1, and And the height difference Δh between two radially adjacent soft magnetic oxygen annular bodies, and Here, the structure of the four soft magnetic oxide rings is designed to be staggered, so that while they are staggered, they also have a certain degree of overlap, thus forming a four-layer anti-interference structure in the middle of the magnetic rings.

[0015] Preferably, each soft magnetic oxygen annular body is an annular body formed by four soft magnetic oxygen sectors of equal height at the same height, and the four soft magnetic oxygen sectors on the same soft magnetic oxygen annular body are evenly distributed on the annular body; and the angle of each soft magnetic oxygen sector on the first soft magnetic oxygen annular body, the second soft magnetic oxygen annular body, the third soft magnetic oxygen annular body and the fourth soft magnetic oxygen annular body is α, and α is 60-75°;

[0016] The soft magnetic oxygen annular bodies and the third soft magnetic oxygen annular body are arranged in an alternating pattern of soft magnetic oxygen sectors. The soft magnetic oxygen annular bodies and the fourth soft magnetic oxygen annular body are also arranged in an alternating pattern of soft magnetic oxygen sectors. After rotating the first soft magnetic oxygen annular body around its central axis by 45°, its arrangement along the circumference of the magnetic ring is the same as that of the third soft magnetic oxygen annular body. Similarly, after rotating the second soft magnetic oxygen annular body around its central axis by 45°, its arrangement along the circumference of the magnetic ring is the same as that of the fourth soft magnetic oxygen annular body.

[0017] Preferably, the upper surface of the magnetic ring has an upwardly inclined convex surface from the outside to the inside, and the lower surface of the magnetic ring has an upwardly inclined concave surface from the outside to the inside. The inclination angle of the convex surface is greater than or equal to the inclination angle of the concave surface. Here, the inclination angle of the convex surface is 45-75°. The inclination angle of the convex surface is matched with the staggered structure of the soft magnetic ferrite ring body, so that when the two magnetic rings are tightly fitted on the signal transmission line, the convex surfaces of the upper and lower magnetic rings are approximately located in the concave surface, thereby forming a multi-layer anti-interference structure with 4 soft magnetic ferrite ring bodies in the area where the two magnetic rings are tightly fitted.

[0018] Preferably, the outer surface of the magnetic ring has a plurality of strip-shaped grooves evenly distributed along its circumference, and the length direction of the strip-shaped grooves is parallel to the central axis of the magnetic ring.

[0019] Beneficial effects:

[0020] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0021] (1) By fitting a magnetic ring on the end of the signal transmission line near the vibration sensor, the strong surge interference and strong electromagnetic wave interference on site are reduced, the normal signal transmission process of the vibration sensor is optimized, and the stability and accuracy of the detection are improved.

[0022] (2) The soft magnetic oxen ring itself has good anti-interference effect. By embedding it, not only can the cost of the magnetic ring be reduced and the internal structure design be facilitated, but the external plastic material has good contact with the signal transmission line, which can protect the embedded soft magnetic oxen ring.

[0023] (3) The tilt angle of the raised surface is matched with the staggered structure of the soft magnetic oxide ring body so that when the two magnetic rings are tightly fitted on the signal transmission line, the raised surface of the upper and lower magnetic rings is roughly located in the concave surface, thus forming a multi-layer anti-interference structure with 4 soft magnetic oxide ring bodies in the area where the two magnetic rings are tightly fitted. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the preferred anti-interference structure of the vibration sensor of this utility model;

[0026] Figure 2 This is a schematic diagram of the preferred three-dimensional structure of the magnetic ring of this utility model;

[0027] Figure 3 This is a schematic diagram of the longitudinal cross-section of a preferred magnetic ring of this utility model;

[0028] Figure 4 This is a schematic diagram of the transverse cross-section of a preferred magnetic ring of this utility model. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] like Figure 1-4 As shown, the anti-interference vibration sensing structure includes a vibration sensor 1. The output signal transmission line 2 of the vibration sensor 1 is connected to a controller 3. A magnetic ring 4 is fitted onto the end of the signal transmission line 2 near the vibration sensor 1. Here, the vibration sensor is installed on a large unit 100 such as a compressor, circulating machine, or gas-generating fan. It detects the vibration of the large unit and converts it into a signal, which is then transmitted to the controller via the signal transmission line. When the controller receives an abnormal signal, it will take corresponding measures such as alarm or shutdown. By fitting a magnetic ring onto the end of the signal transmission line near the vibration sensor, strong surge interference and strong electromagnetic wave interference are reduced, optimizing the normal signal transmission process of the vibration sensor and improving the stability and accuracy of the detection.

[0031] In a preferred embodiment, four magnetic rings 4 are sequentially fitted along the length of the signal transmission line 2, with the four magnetic rings 4 touching end to end. Studies have shown that multiple magnetic rings 4 fitted end to end on the signal transmission line provide better anti-interference performance than a single magnetic ring; therefore, four magnetic rings are preferred. Using more magnetic rings has little impact on anti-interference performance compared to four.

[0032] In a preferred embodiment, at least one of the four magnetic rings is a magnetic ring 4 with a soft magnetic oxide ring body 5 embedded inside; preferably, all four magnetic rings are magnetic rings 4 with a soft magnetic oxide ring body 5 embedded inside.

[0033] In a preferred embodiment, the magnetic ring 4 is provided with a first soft magnetic oxide ring 51, a second soft magnetic oxide ring 52, a third soft magnetic oxide ring 53 and a fourth soft magnetic oxide ring 54 arranged sequentially from the outside to the inside. The first soft magnetic oxide ring 51 and the third soft magnetic oxide ring 53 are located at the lower part of the magnetic ring 4, and the second soft magnetic oxide ring 52 and the fourth soft magnetic oxide ring 54 are located at the upper part of the magnetic ring 4.

[0034] The lower part of the second soft magnetic ferrite ring 52 is located between the first soft magnetic ferrite ring 51 and the third soft magnetic ferrite ring 53, and the upper part of the third soft magnetic ferrite ring 53 is located between the second soft magnetic ferrite ring 52 and the fourth soft magnetic ferrite ring 54. Four soft magnetic ferrite rings are arranged from the inside out within the magnetic ring, and the first and third soft magnetic ferrite rings are staggered with the second and fourth soft magnetic ferrite rings vertically, forming a multi-layered, staggered anti-interference structure.

[0035] In a preferred embodiment, the magnetic ring 4 is made entirely of plastic, and four soft magnetic ferrite ring bodies 5 are embedded within it, arranged vertically. The central axis of each soft magnetic ferrite ring body 5 coincides with the central axis of the magnetic ring 4, and the thickness of each soft magnetic ferrite ring body 5 is 0.8-2.0 mm. The soft magnetic ferrite ring body itself has good anti-interference properties. This embedded design not only reduces the cost of the magnetic ring and facilitates the design of the internal structure, but also ensures good contact between the external plastic material and the signal transmission line, thus protecting the embedded soft magnetic ferrite ring bodies.

[0036] In a preferred embodiment, the height h0 of the magnetic ring 4 is 2.0-5.0 cm. Here, four magnetic rings 4 can be set. Among them, the three magnetic rings 4 closest to the vibration sensor 1 have the same height and size. The height of the fourth magnetic ring 4 is greater than that of the first three magnetic rings 4, and its outer diameter is smaller than that of the first three magnetic rings but larger than that of the first three magnetic rings 4.

[0037] In a preferred embodiment, the heights of the first soft magnetic ferrite ring 51, the second soft magnetic ferrite ring 52, the third soft magnetic ferrite ring 53, and the fourth soft magnetic ferrite ring 54 are all h1, and And the height difference Δh between two radially adjacent soft magnetic oxygen annular bodies 5, and Here, the structure of the four soft magnetic oxide rings is designed to be staggered, so that while they are staggered, they also have a certain degree of overlap, thus forming a four-layer anti-interference structure in the middle of the magnetic rings.

[0038] In a preferred embodiment, each soft magnetic oxygen annular body 5 is an annular body formed by four soft magnetic oxygen sectors 50 of equal height at the same height, and the four soft magnetic oxygen sectors 50 on the same soft magnetic oxygen annular body 5 are evenly distributed on the annular body; and the angle of each soft magnetic oxygen sector 50 on the first soft magnetic oxygen annular body 51, the second soft magnetic oxygen annular body 52, the third soft magnetic oxygen annular body 53 and the fourth soft magnetic oxygen annular body 54 is α, and α is 60-75°;

[0039] The soft magnetic oxygen fan-shaped structures 50 on the first soft magnetic oxygen annular body 51 and the third soft magnetic oxygen annular body 53 are staggered, and the soft magnetic oxygen fan-shaped structures 50 on the second soft magnetic oxygen annular body 52 and the fourth soft magnetic oxygen annular body 54 are staggered. After rotating 45° around its central axis, the arrangement position of the first soft magnetic oxygen annular body 51 along the circumference of the magnetic ring 4 is the same as that of the third soft magnetic oxygen annular body 53, and after rotating 45° around its central axis, the arrangement position of the second soft magnetic oxygen annular body 52 along the circumference of the magnetic ring 4 is the same as that of the fourth soft magnetic oxygen annular body 54.

[0040] In a preferred embodiment, the upper surface of the magnetic ring 4 has an upwardly inclined protruding surface 41 from the outside to the inside, and the lower surface of the magnetic ring 4 has an upwardly inclined concave surface 42 from the outside to the inside. The inclination angle of the protruding surface 41 is greater than or equal to the inclination angle of the concave surface 42. Here, the inclination angle of the protruding surface is 45-75°. The inclination angle of the protruding surface is matched with the staggered structure of the soft magnetic ferrite ring body, so that when the two magnetic rings 4 are tightly fitted on the signal transmission line, the protruding surfaces of the upper and lower magnetic rings are approximately located in the concave surface. Thus, a multi-layer anti-interference structure with four soft magnetic ferrite ring bodies 5 is also formed in the area where the two magnetic rings 4 are tightly fitted.

[0041] In a preferred embodiment, the outer surface of the magnetic ring 4 is uniformly distributed with a plurality of strip grooves 43 along its circumference, and the length direction of the strip grooves 43 is parallel to the central axis of the magnetic ring 4.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-interference vibration sensing structure, characterized in that, The device includes a vibration sensor, the output signal transmission line of which is connected to a controller. A magnetic ring is fitted on one end of the signal transmission line near the vibration sensor. Four magnetic rings are sequentially fitted along the length of the signal transmission line, with the four magnetic rings touching end to end. At least one of the four magnetic rings is a magnetic ring with a soft magnetic oxide ring embedded inside.

2. The anti-interference vibration sensing structure according to claim 1, characterized in that, All four magnetic rings are magnetic rings with embedded soft magnetic oxide ring bodies.

3. The anti-interference vibration sensing structure according to claim 1, characterized in that, The magnetic ring is arranged from the outside to the inside with a first soft magnetic oxygen ring, a second soft magnetic oxygen ring, a third soft magnetic oxygen ring, and a fourth soft magnetic oxygen ring. The first and third soft magnetic oxygen rings are located at the lower part of the magnetic ring, and the second and fourth soft magnetic oxygen rings are located at the upper part of the magnetic ring. The lower part of the second soft magnetic oxygen toroidal body is located between the first soft magnetic oxygen toroidal body and the third soft magnetic oxygen toroidal body, and the upper part of the third soft magnetic oxygen toroidal body is located between the second soft magnetic oxygen toroidal body and the fourth soft magnetic oxygen toroidal body.

4. The anti-interference vibration sensing structure according to claim 3, characterized in that, The magnetic ring is made of plastic and has four soft magnetic oxide rings embedded in it, arranged vertically. The central axis of each soft magnetic oxide ring coincides with the central axis of the magnetic ring. The thickness of each soft magnetic oxide ring is 0.8-2.0 mm.

5. The anti-interference vibration sensing structure according to claim 4, characterized in that, The height h0 of the magnetic ring is 2.0-5.0 cm, and the heights of the first, second, third, and fourth soft magnetic ferrite rings are all h1. And the height difference Δh between two radially adjacent soft magnetic oxygen annular bodies, and .

6. The anti-interference vibration sensing structure according to claim 5, characterized in that, Each soft magnetic oxygen toroidal body is a ring formed by four soft magnetic oxygen sectors of equal height at the same height. The four soft magnetic oxygen sectors on the same soft magnetic oxygen toroidal body are evenly distributed on the ring. The angle of each soft magnetic oxygen sector on the first, second, third, and fourth soft magnetic oxygen toroidal bodies is α, and α is 60-75°. The soft magnetic oxygen annular bodies and the third soft magnetic oxygen annular body are arranged in an alternating pattern of soft magnetic oxygen sectors. The soft magnetic oxygen annular bodies and the fourth soft magnetic oxygen annular body are also arranged in an alternating pattern of soft magnetic oxygen sectors. After rotating the first soft magnetic oxygen annular body around its central axis by 45°, its arrangement along the circumference of the magnetic ring is the same as that of the third soft magnetic oxygen annular body. Similarly, after rotating the second soft magnetic oxygen annular body around its central axis by 45°, its arrangement along the circumference of the magnetic ring is the same as that of the fourth soft magnetic oxygen annular body.

7. The anti-interference vibration sensing structure according to claim 1, characterized in that, The upper surface of the magnetic ring has an upwardly inclined convex surface from the outside to the inside, and the lower surface of the magnetic ring has an upwardly inclined concave surface from the outside to the inside. The inclination angle of the convex surface is greater than or equal to the inclination angle of the concave surface.

8. The anti-interference vibration sensing structure according to claim 1, characterized in that, The outer surface of the magnetic ring has several strip-shaped grooves evenly distributed along its circumference, and the length direction of the strip-shaped grooves is parallel to the central axis of the magnetic ring.

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