Vibration sound monitoring device of rotating equipment
By designing a vibration and sound monitoring device on the rotating equipment of a nuclear power plant and using a magnetic structure and sensors to collect signals, the subjective problem of acoustic monitoring using the artificial ear is solved, specific data-based monitoring of the equipment is achieved, and monitoring efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202422855162.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-21
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the existing technology, the monitoring of rotating equipment in nuclear power plants mainly relies on human hearing, which is greatly affected by subjective factors and cannot achieve specific quantitative abnormal sound monitoring.
A vibration and sound monitoring device for rotating equipment is designed. It is fixed on the surface of the rotating equipment using a magnetic structure. The vibration sensor collects vibration signals and the sound collector collects sound signals in the cavity to achieve specific data monitoring.
It realizes the specific data monitoring of the vibration and sound signals of rotating equipment, improves the monitoring efficiency and accuracy, and assists in the diagnosis of equipment operating status and faults.
Smart Images
Figure CN223320032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotating equipment monitoring, in particular to a vibration and sound monitoring device for rotating equipment. Background Art
[0002] Nuclear power plants have a large number of rotating equipment that provide energy or transport media, such as motors, pumps, fans, etc., and some key equipment involves nuclear safety, which has relatively high requirements for the stability and quality of equipment operation.
[0003] At present, the monitoring of rotating equipment on-site in nuclear power plants is mainly achieved through artificial hearing. Although this method is simple, it has high labor costs and is greatly affected by subjective factors. Different people may perceive the same sound differently at different times. Therefore, it is impossible to quantify whether there is any abnormality in the sound of the rotating equipment, and the monitoring effect is poor. Utility Model Content
[0004] The technical problem to be solved by the present invention is that, in view of at least one defect of the related technology mentioned in the above background technology: the method of monitoring rotating equipment by artificial ears is greatly affected by subjective factors, and it is impossible to specifically quantify whether there is any abnormality in the sound of the rotating equipment. A vibration sound monitoring device for rotating equipment is provided.
[0005] The technical solution adopted by the utility model to solve the technical problem is to construct a vibration and sound monitoring device for rotating equipment, comprising:
[0006] A cover structure, wherein the cover structure has a cavity with an open end therein, and the periphery of the opening of the cover structure is used to be arranged close to the outer surface of the component to be monitored of the rotating equipment;
[0007] a supporting structure, the supporting structure being fixed to an end portion of the cover structure opposite to the opening;
[0008] a vibration sensor and a magnetic structure, wherein the vibration sensor is detachably mounted on the support structure and is located within the cavity; the magnetic structure is detachably mounted on the vibration sensor; the magnetic structure is configured to magnetically adhere to the outer surface of the component to be monitored to vibrate at the same frequency; and the vibration sensor collects vibration signals of the component to be monitored by collecting vibrations of the magnetic structure; and
[0009] At least one sound collector is detachably mounted on the supporting structure and is located in the cavity, and is used to collect sound signals in the cavity.
[0010] In some embodiments, the support structure includes a sidewall extending in its axial direction and an end portion opposite to the opening of the cover structure in its axial direction;
[0011] The side wall of the support structure is provided through the end portion of the cover structure opposite to the opening;
[0012] The vibration sensor is detachably mounted on the end of the supporting structure, and the sound collector is detachably mounted on the side wall of the supporting structure.
[0013] In some embodiments, a positioning portion is provided on a side wall of the support structure, and an inner end surface of an end portion of the cover structure opposite to the opening abuts against the positioning portion.
[0014] In some embodiments, an adjustment structure is provided between the side wall of the support structure and the end of the cover structure opposite to the opening;
[0015] In the axial direction of the support structure, the cover structure and the support structure can move relative to each other through the adjustment structure.
[0016] In some embodiments, in an axial cross section of the support structure, the magnetic attraction structure at least partially protrudes from the opening periphery of the cover structure.
[0017] In some embodiments, the sound collecting portion of the sound collector faces the opening of the cover structure; and / or the sound collector is arranged close to the opening of the cover structure.
[0018] In some embodiments, the vibration and sound monitoring device for rotating equipment further comprises:
[0019] A signal transmission line is housed inside the supporting structure and is electrically connected to the vibration sensor and the sound collector, respectively. The signal transmission line is used to transmit vibration signals and sound signals.
[0020] In some embodiments, the signal transmission line is a shielded cable.
[0021] In some embodiments, the magnetic attraction structure includes:
[0022] a magnetic body, the magnetic body being detachably mounted on the vibration sensor; and
[0023] A magnetic flat plate, at least two magnetic feet or a magnetic bent plate, wherein the magnetic flat plate, the magnetic feet or the magnetic bent plate are located at an end of the magnetic body opposite to the vibration sensor.
[0024] In some embodiments, at least a portion of the inner surface of the cover structure is provided with a shielding layer.
[0025] By implementing the utility model, the following beneficial effects are achieved:
[0026] The present invention utilizes a magnetic structure to assist in fixing the entire vibration and sound monitoring device to the outer surface of the component to be monitored of the rotating equipment. At the same time, the magnetic structure and the component to be monitored vibrate at the same frequency. The vibration sensor collects the vibration signal of the component to be monitored by collecting the vibration of the magnetic structure, thereby realizing specific data-based vibration monitoring. In addition, the opening periphery of the cover structure is used to be set close to the outer surface of the component to be monitored of the rotating equipment. Therefore, the sound collector is located in the cavity, which can reduce the interference of external sounds. The sound collector can realize specific data-based sound monitoring by collecting the sound signal in the cavity. Ultimately, the vibration signal and the sound signal can assist in diagnosing the operating status and faults of the component to be monitored, thereby improving the monitoring efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0028] Figure 1 A bottom view of an embodiment of a vibration and sound monitoring device for rotating equipment according to the present invention is shown;
[0029] Figure 2 A first cross-sectional view of an embodiment of a vibration and sound monitoring device for rotating equipment according to the present invention is shown;
[0030] Figure 3 A second cross-sectional view showing an embodiment of the vibration and sound monitoring device for rotating equipment according to the present invention is shown;
[0031] Figure 4 It shows a first structural schematic diagram of the magnetic attraction structure in one embodiment of the vibration and sound monitoring device for rotating equipment of the present invention;
[0032] Figure 5 A second structural schematic diagram of the magnetic attraction structure in an embodiment of the vibration and sound monitoring device for rotating equipment of the present invention is shown. DETAILED DESCRIPTION
[0033] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings.
[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.
[0035] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.
[0036] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "located at," and "located at" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, chemical connections, direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0037] in addition, Figures 1 to 5 It is only a schematic diagram. For example, the internal components of the vibration sensor and the sound collector are not shown. You can refer to the existing well-known vibration sensors and sound collectors, and will not be described in detail here.
[0038] When different faults occur within rotating equipment, they will radiate sound and vibration characteristics that differ from normal to a certain extent. This phenomenon can be used to assist in determining whether a component of the rotating equipment has failed by collecting different sound and vibration signals. For example, the bearing end cover of a hot water pump may be loose, rubbing against the outer end face of the adjacent bearing seat, generating vibration and a harsh "squeaking" sound. Another example is the inner ring of a fan motor bearing that has a peeling pit. Each time the rolling element passes over the defect during operation, it will generate an impact, vibration, and emit a characteristic sound. The sound and vibration of abnormal equipment operation often contain various fault information. Therefore, automatically and accurately collecting sound and vibration signals can help assist in diagnosing the operating status and faults of rotating equipment.
[0039] like Figure 1 and Figure 2As shown, some embodiments of the present invention disclose a vibration and sound monitoring device for rotating equipment, including a cover structure 1, a support structure 2, a vibration sensor 3, a magnetic structure 4 and at least one sound collector 5. It can be understood that the at least one can be one, two, three or any number. The vibration and sound monitoring device is specifically as follows:
[0040] The interior of the cover structure 1 has a cavity 11 with an open end, and the cavity 11 is used to correspond to the component to be monitored. The opening periphery 12 of the cover structure 1 is used to be set close to the outer surface 7 of the component to be monitored of the rotating equipment, that is, the opening periphery 12 of the cover structure 1 does not contact the outer surface 7 of the component to be monitored, and there is a gap between it and the outer surface 7 of the component to be monitored.
[0041] Support structure 2 is fixed to the end of cover structure 1 opposite the opening. Vibration sensor 3 is detachably mounted on support structure 2 and located within cavity 11. Magnetic structure 4 is detachably mounted on vibration sensor 3. Magnetic structure 4 is configured to magnetically adhere to outer surface 7 of the component to be monitored to vibrate at the same frequency. Vibration sensor 3 collects vibration signals from the component to be monitored by collecting the vibrations of magnetic structure 4. Sound collector 5 is detachably mounted on support structure 2 and located within cavity 11. Sound collector 5 is configured to collect sound signals within cavity 11.
[0042] For example, the component to be monitored of a rotating device can be the drive end or non-drive end of the rotating device. The drive end of the rotating device is the power output end of the motor shaft, where a coupling or the like can be installed for power output. The non-drive end of the rotating device is the load end of the motor shaft, where the motor shaft can be extended to assist in the installation of non-load-bearing accessories such as cooling fans. The outer surface 7 of the component to be monitored can be a metal surface or a surface coated with magnetic material. It should be noted that this is merely an example and does not limit the present application.
[0043] In this embodiment, the magnetic structure 4 can assist in fixing the entire vibration and sound monitoring device to the outer surface 7 of the component to be monitored of the rotating equipment. It can be understood that as long as the magnetic force of the magnetic structure 4 is strong enough, the entire vibration and sound monitoring device can be adsorbed and fixed to the outer surface 7 of the component to be monitored. Of course, in some embodiments, manual fixation and magnetic assisted fixation can also be used.
[0044] At the same time, the magnetic structure 4 and the component to be monitored vibrate at the same frequency, and the vibration sensor 3 collects the vibration signal of the component to be monitored by collecting the vibration of the magnetic structure 4, thereby realizing specific data-based vibration monitoring.
[0045] In addition, the cavity 11 is used to correspond to the component to be monitored, and the opening periphery 12 of the cover structure 1 is used to be set close to the outer surface 7 of the component to be monitored of the rotating equipment. Therefore, the sound collector 5 is located in the cavity 11, which can reduce the interference of external sounds. The sound collector 5 can realize specific data-based sound monitoring by collecting the sound signal in the cavity 11.
[0046] Ultimately, vibration signals and sound signals can assist in diagnosing the operating status and faults of the monitored components, thereby improving monitoring efficiency and accuracy.
[0047] In some embodiments, such as Figure 2 As shown, the support structure 2 includes a side wall extending in its axial direction (i.e., the Z-axis direction) and an end portion thereof opposite to the opening of the cover structure 1 in its axial direction. The side wall of the support structure 2 is inserted into the end portion of the cover structure 1 opposite to the opening. The vibration sensor 3 is detachably mounted on the end portion of the support structure 2, and the sound collector 5 is detachably mounted on the side wall of the support structure 2. For example, the detachable mounting is as follows Figure 2 The threaded installation or clip-on installation shown here are only examples and are not intended to limit the present application. Others are also possible.
[0048] In some embodiments, such as Figure 2 As shown, in order to position the support structure 2 when it is installed on the cover structure 1 and prevent the opening periphery 12 of the cover structure 1 from contacting the outer surface 7 of the component to be monitored, a positioning portion 21 is provided on the side wall of the support structure 2. The inner end surface of the end of the cover structure 1 opposite the opening abuts against the positioning portion 21. For example, the positioning portion 21 is an annular boss. The annular boss here is only an example and does not limit the present application. Other types are also possible.
[0049] In some other embodiments, Figure 3 As shown, in order to prevent the opening periphery 12 of the cover structure 1 from contacting the outer surface 7 of the component to be monitored and to achieve adjustable spacing between the opening periphery 12 of the cover structure 1 and the outer surface 7 of the component to be monitored, an adjustment structure 22 is provided between the side wall of the support structure 2 and the end of the cover structure 1 opposite to the opening. In the axial direction of the support structure 2, the cover structure 1 and the support structure 2 can move relative to each other through the adjustment structure 22. For example, the adjustment structure is a threaded structure, and the cover structure 1 and the support structure 2 can move relative to each other by rotating the thread. The threaded structure here is only an example and is not intended to limit the present application. Other structures are also possible.
[0050] like Figure 2 and Figure 3As shown, the positioning portion 21 and the adjustment structure 22 can be implemented on the axial cross-section of the support structure 2, and the magnetic structure 4 at least partially protrudes from the opening periphery 12 of the cover structure 1, so that there is a gap between the opening periphery 12 of the cover structure 1 and the outer surface 7 of the component to be monitored. Specifically, on the axial cross-section of the support structure 2, there is a gap between the surface of the magnetic structure 4 opposite to the vibration sensor 3 and the opening periphery 12 of the cover structure 1, and the gap is 1-5 cm, that is, the gap between the opening periphery 12 of the cover structure 1 and the outer surface 7 of the component to be monitored is sufficiently small. The 1-5 cm here is only an example and is not intended to limit the present application. Other gaps are also possible.
[0051] In some embodiments, the sound collecting portion of the sound collector 5 faces the opening of the cover structure 1 , for example, the sound collecting portion is a microphone. In other embodiments, the sound collector 5 is disposed close to the opening of the cover structure 1 .
[0052] In some embodiments, such as Figure 2 and Figure 3 As shown, the vibration and sound monitoring device for rotating equipment also includes a signal transmission line 6. The signal transmission line 6 is housed inside the support structure 2 and is electrically connected to the vibration sensor 3 and the sound collector 5, respectively. The signal transmission line 6 is used to transmit vibration signals and sound signals. In some embodiments, the signal transmission line 6 is a shielded cable, that is, a signal transmission line that wraps the signal line with a metal mesh braided layer, which can ensure the transmission performance of the system in an environment with electromagnetic interference. For example, the interface of the signal transmission line 6 is a LEMO interface or a Bnc interface. The LEMO interface and Bnc interface here are only examples and are not intended to limit the present application. Other interfaces can also be used.
[0053] In some embodiments, the magnetic structure 4 includes a magnetic body 41, and Figure 2 and Figure 3 The magnetic plate 42a shown in FIG. Figure 4 At least two magnetic feet 42b as shown or as Figure 5 The magnetic body 41 is detachably mounted on the vibration sensor 3 , and the magnetic flat plate 42 a , the magnetic foot 42 b or the magnetic bent plate 42 c is located at the end of the magnetic body 41 opposite to the vibration sensor 3 .
[0054] Specifically, the outer surface 7 of the actual component to be monitored may have a horizontal surface, an irregular concave-convex surface, and a curved surface. In order to adapt to different outer surfaces 7, the magnetic structure 4 can be replaced as a whole. When the outer surface 7 of the component to be monitored is a horizontal surface, a magnetic structure 4 with a magnetic flat plate 42a can be selected, and the magnetic flat plate 42a is used to be magnetically attracted to the horizontal surface of the component to be monitored. When the outer surface 7 of the component to be monitored is an irregular concave-convex surface, a magnetic structure 4 with magnetic feet 42b can be selected, and at least two magnetic feet 42b are used to be magnetically attracted to the irregular concave-convex surface of the component to be monitored. It can be understood that the at least two can be two, three, or any number, and the magnetic feet 42b are evenly spaced on the magnetic body 41. When the outer surface 7 of the component to be monitored is a curved surface, a magnetic structure 4 with a magnetic bent plate 42c can be selected. The magnetic bent plate 42c is used to magnetically attract the curved surface of the component to be monitored. The shape of the magnetic bent plate 42c is adapted to the curved surface of the component to be monitored, for example, both are arc-shaped. The arc shape here is only an example and is not a limitation of this application. It can also be other shapes.
[0055] In some embodiments, the sidewalls of the cover structure 1 are at least partially made of an elastic material. Accordingly, the end of the cover structure 1 opposite the opening is made of a rigid material. For example, the elastic material is a soft colloid, and the rigid material is a hard plastic. Therefore, the end of the cover structure 1 opposite the opening can be bonded, snapped, or threaded to the sidewalls of the support structure 2.
[0056] Alternatively, the cover structure 1 as a whole is an elastomer, specifically an elastic cylindrical structure, for example, the elastomer is a soft colloid, and accordingly, the end of the cover structure 1 opposite to the opening has a socket, the support structure 2 is cylindrical, and the side wall of the support structure 2 is passed through the socket, and elasticity is used to achieve a tight fit between the cover structure 1 and the support structure 2.
[0057] Alternatively, the cover structure 1 is a hard body as a whole, for example, a hard plastic body, and the end of the cover structure 1 opposite to the opening can be bonded, snapped, or screwed to the side wall of the support structure 2.
[0058] It should be noted that the soft glue and hard plastic here are only examples and are not intended to limit the present application. Other materials are also possible.
[0059] In some embodiments, to minimize the impact of external electromagnetic interference on signal acquisition, a shielding layer is provided on at least a portion of the inner surface of the cover structure 1. It is understood that the at least portion can be partial or complete, and the shielding layer is more effective as long as the distance between the opening perimeter 12 of the cover structure 1 and the outer surface 7 of the component to be monitored is sufficiently small. For example, the shielding layer is a metal layer, and the metal can be foil, silver, copper, nickel, aluminum, iron, carbon, or a composite metal. In specific implementations, the metal can be sputtered onto the inner surface of the cover structure 1 to form a nanometal layer.
[0060] By implementing the utility model, the following beneficial effects are achieved:
[0061] The present invention utilizes the magnetic structure 4 to assist in fixing the entire vibration and sound monitoring device to the outer surface 7 of the component to be monitored of the rotating equipment. It can be understood that as long as the magnetic force of the magnetic structure 4 is strong enough, the entire vibration and sound monitoring device can be adsorbed and fixed to the outer surface 7 of the component to be monitored. Of course, in some embodiments, manual fixation and magnetic assisted fixation can also be used.
[0062] At the same time, the magnetic structure 4 and the component to be monitored vibrate at the same frequency, and the vibration sensor 3 collects the vibration signal of the component to be monitored by collecting the vibration of the magnetic structure 4, thereby realizing specific data-based vibration monitoring.
[0063] In addition, the cavity 11 is used to correspond to the component to be monitored, and the opening periphery 12 of the cover structure 1 is used to be set close to the outer surface 7 of the component to be monitored of the rotating equipment. Therefore, the sound collector 5 is located in the cavity 11, which can reduce the interference of external sounds. The sound collector 5 can realize specific data-based sound monitoring by collecting the sound signal in the cavity 11.
[0064] Ultimately, vibration signals and sound signals can assist in diagnosing the operating status and faults of the monitored components, thereby improving monitoring efficiency and accuracy.
[0065] It is understandable that the above embodiments only express some of the implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.
Claims
1. A vibration and sound monitoring device for rotating equipment, characterized in that: include: A cover structure (1), wherein the cover structure (1) has a cavity (11) with an open end therein, and the opening periphery (12) of the cover structure (1) is arranged close to the outer surface (7) of the component to be monitored of the rotating equipment; A support structure (2), the support structure (2) being fixed to an end portion of the cover structure (1) opposite to the opening; A vibration sensor (3) and a magnetic attraction structure (4), wherein the vibration sensor (3) is detachably mounted on the support structure (2) and is located in the cavity (11); the magnetic attraction structure (4) is detachably mounted on the vibration sensor (3); the magnetic attraction structure (4) is used to magnetically attach to the outer surface (7) of the component to be monitored to generate vibration at the same frequency; and the vibration sensor (3) collects the vibration signal of the component to be monitored by collecting the vibration of the magnetic attraction structure (4); as well as, At least one sound collector (5) is detachably mounted on the support structure (2) and is located in the cavity (11), and the sound collector (5) is used to collect sound signals in the cavity (11).
2. The vibration and sound monitoring device for rotating equipment according to claim 1, characterized in that: The support structure (2) comprises a side wall extending in its axial direction and an end portion opposite to the opening of the cover structure (1) in its axial direction; The side wall of the support structure (2) is inserted into the end portion of the cover structure (1) opposite to the opening; The vibration sensor (3) is detachably mounted on the end of the support structure (2), and the sound collector (5) is detachably mounted on the side wall of the support structure (2).
3. The vibration and sound monitoring device for rotating equipment according to claim 2, characterized in that: A positioning portion (21) is provided on the side wall of the support structure (2), and the inner end surface of the end portion of the cover structure (1) opposite to the opening abuts against the positioning portion (21).
4. The vibration and sound monitoring device for rotating equipment according to claim 2, characterized in that: An adjustment structure (22) is provided between the side wall of the support structure (2) and the end portion of the cover structure (1) opposite to the opening; In the axial direction of the support structure (2), the cover structure (1) and the support structure (2) can move relative to each other through the adjustment structure (22).
5. The vibration and sound monitoring device for rotating equipment according to claim 1, 3 or 4, characterized in that: In an axial cross section of the support structure (2), the magnetic attraction structure (4) at least partially protrudes from the opening periphery (12) of the cover structure (1).
6. The vibration and sound monitoring device for rotating equipment according to claim 1, characterized in that: The sound collecting portion of the sound collector (5) faces the opening of the cover structure (1); and / or the sound collector (5) is arranged close to the opening of the cover structure (1).
7. The vibration and sound monitoring device for rotating equipment according to claim 1, characterized in that: The vibration and sound monitoring device for rotating equipment further comprises: A signal transmission line (6) is housed inside the support structure (2) and is electrically connected to the vibration sensor (3) and the sound collector (5), respectively. The signal transmission line (6) is used to transmit vibration signals and sound signals.
8. The vibration and sound monitoring device for rotating equipment according to claim 7, characterized in that: The signal transmission line (6) is a shielded cable.
9. The vibration and sound monitoring device for rotating equipment according to claim 1, characterized in that: The magnetic attraction structure (4) comprises: a magnetic body (41), the magnetic body (41) being detachably mounted on the vibration sensor (3); and A magnetic flat plate (42a), at least two magnetic feet (42b) or a magnetic bent plate (42c), wherein the magnetic flat plate (42a), the magnetic feet (42b) or the magnetic bent plate (42c) are located on the end of the magnetic body (41) opposite to the vibration sensor (3).
10. The vibration and sound monitoring device for rotating equipment according to claim 1, characterized in that: The inner surface of the cover structure (1) is at least partially provided with a shielding layer.