Coal power generator set vibration early warning and monitoring device based on RCM

Abstract

The utility model discloses an RCM-based coal power generator set vibration early warning monitoring device, which relates to the technical field of thermal power generators and comprises a base, a mounting rack, a connecting seat vibration sensor and an alarm assembly. The mounting frame is connected to the base; the connecting base is used for being connected with the thermal power generator, a mounting cavity is formed in the connecting base, and a connecting pipeline is arranged on the side, back on to the thermal power generator, of the connecting base and communicates with the mounting cavity and the mounting frame. The vibration sensor is connected to the shell of the thermal power generator, is located in the mounting cavity and is in communication connection with the controller; the alarm assembly is electrically connected with the controller and used for conducting alarm processing on vibration abnormity of the thermal power generator.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generator technology, and in particular to a vibration early warning and monitoring device for coal-fired power generator sets based on RCM. Background Technology

[0002] Reliability-centered maintenance (RCM) methods are also applied to thermal power generating units. By analyzing the equipment's functions, failure modes, and their impact on the system, the most appropriate maintenance tasks are determined to ensure the reliability and performance of the thermal power generating units, thereby guaranteeing their safe operation.

[0003] Torsional vibration of the shaft system in large thermal power generating units is a significant factor affecting their operation. It refers to torsional vibration of the shaft system caused by electromechanical disturbances or abnormal operating conditions. In severe cases, it can generate excessive alternating torsional stress at certain sections of the shaft or couplings, leading to impact or fatigue-cumulative damage and directly threatening the safe operation of the unit. Therefore, vibration testing of thermal power generating units is necessary to ensure the early detection of changes in vibration amplitude, enabling timely intervention to prevent equipment damage and economic losses. Furthermore, simplifying the structure of the detection and early warning device while ensuring effective testing remains a challenge that requires further investigation. Utility Model Content

[0004] The main purpose of this invention is to propose a vibration early warning monitoring device for coal-fired power generator sets based on RCM, which aims to simplify the structure of the monitoring device while ensuring the detection effect.

[0005] To achieve the above objectives, the present invention proposes a vibration early warning and monitoring device for coal-fired power generating units based on RCM, comprising:

[0006] Base;

[0007] Mounting bracket, the mounting bracket being connected to the base;

[0008] A connecting seat is used to connect a thermal power generator. The connecting seat has an internal mounting cavity. A connecting pipe is provided on the side of the connecting seat facing away from the thermal power generator. The connecting pipe connects the mounting cavity and the mounting frame.

[0009] A vibration sensor is connected to the housing of the thermal power generator and located inside the mounting cavity; the vibration sensor is communicatively connected to the controller.

[0010] An alarm component, electrically connected to the controller, is used to alarm and process abnormal vibrations of the thermal power generator.

[0011] In one embodiment, the connecting base and the vibration sensor include multiple ones, each of the connecting bases being connected at intervals to the housing of the thermal power generator, and one of the vibration sensors being disposed in the mounting cavity of one of the connecting bases.

[0012] In one embodiment, the connecting seat has a mounting groove, which is arranged around the side of the connecting seat facing the thermal generator and located at the outer edge of the mounting cavity. A connector is provided in the mounting groove for connecting the connecting seat and the thermal generator.

[0013] In one embodiment, the connector is a magnetic connector, which is snapped into the mounting groove and magnetically connected to the thermal power generator.

[0014] In one embodiment, the connecting seat includes a base body and a cover body, the cover body is disposed on the top of the base body, the cover body has a through hole, the connecting pipe passes through the through hole, and the mounting groove is disposed in the base body.

[0015] In one embodiment, the mounting bracket includes a frame and a slide rail. A groove is formed at the bottom of the frame. The slide rail is engaged in the groove and can slide along the extension direction of the groove. The connecting pipe is connected to the groove.

[0016] In one embodiment, the top of the slide rail is provided with a wire receiving groove, which is arranged along the extension direction of the slide rail.

[0017] In one embodiment, the connecting pipe is detachably connected to the connecting seat and the mounting bracket.

[0018] In one embodiment, the connecting pipe is a rubber hose.

[0019] In one embodiment, the alarm component includes a warning light and a warning horn, which are spaced apart from each other on the mounting bracket.

[0020] This invention provides a stable monitoring system capable of real-time monitoring of the vibration of thermal power generators and issuing alarms when abnormalities are detected. By installing the vibration sensor within the mounting cavity of the connector, a tight contact between the sensor and the generator's casing is ensured, thereby accurately capturing vibration data. The design of the connecting pipes makes the communication connection between the sensor and the controller more stable and unaffected by external environmental factors. The electrical connection between the alarm component and the controller ensures timely audible and visual alarms upon detecting abnormal vibrations, alerting operators to take appropriate measures and preventing potential equipment damage and accidents. The overall structure of the early warning device is relatively simple and improves the operational safety of thermal power generator sets. Through real-time monitoring and timely alarms, it reduces equipment failures and downtime, enhancing equipment maintenance and management efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of the RCM-based vibration early warning monitoring device for coal-fired power generator sets provided by this utility model;

[0023] Figure 2 for Figure 1 A cross-sectional schematic diagram of the mounting bracket;

[0024] Figure 3 for Figure 1 A cross-sectional schematic diagram of the intermediate connector;

[0025] Figure 4 for Figure 3 Bottom view of the middle connector.

[0026] Explanation of icon numbers:

[0027] 1000. Vibration early warning monitoring device for coal-fired power generator sets based on RCM; 1. Base; 2. Mounting frame; 21. Frame body; 211. Slide groove; 22. Slide rail; 221. Cable tray; 3. Connecting seat; 31. Seat body; 311. Mounting groove; 311a. Connecting piece; 32. Cover; 4. Connecting pipe; 5. Vibration sensor; 200. Thermal power generator.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Reliability-centered maintenance (RCM) methods are also applied to thermal power generating units. By analyzing the equipment's functions, failure modes, and their impact on the system, the most appropriate maintenance tasks are determined to ensure the reliability and performance of the thermal power generating units, thereby guaranteeing their safe operation.

[0033] Torsional vibration of the shaft system in large thermal power generating units is a significant factor affecting their operation. It refers to torsional vibration of the shaft system caused by electromechanical disturbances or abnormal operating conditions. In severe cases, it can generate excessive alternating torsional stress at certain sections of the shaft or couplings, leading to impact or fatigue-cumulative damage and directly threatening the safe operation of the unit. Therefore, vibration testing of thermal power generating units is necessary to ensure the early detection of changes in vibration amplitude, enabling timely intervention to prevent equipment damage and economic losses. Furthermore, simplifying the structure of the detection and early warning device while ensuring effective testing remains a challenge that requires further investigation.

[0034] To solve the above problems, please refer to... Figures 1 to 4 This utility model proposes a vibration early warning monitoring device 1000 for coal-fired power generator sets based on RCM, including a base 1, a mounting frame 2, a connecting seat 3, a vibration sensor 5, and an alarm component; the mounting frame 2 is connected to the base 1; the connecting seat 3 is used to connect the coal-fired power generator 200, and an installation cavity is formed inside the connecting seat 3. A connecting pipe 4 is provided on the side of the connecting seat 3 facing away from the coal-fired power generator 200, and the connecting pipe 4 connects the installation cavity and the mounting frame 2; the vibration sensor 5 is connected to the outer shell of the coal-fired power generator 200 and is located in the installation cavity, and the vibration sensor 5 is communicatively connected to the controller; the alarm component is electrically connected to the controller and is used to alarm and process abnormal vibration of the coal-fired power generator 200.

[0035] This invention provides a stable monitoring system capable of real-time monitoring of the vibration of the thermal power generator 200 and issuing an alarm when an abnormality is detected. By installing the vibration sensor 5 within the mounting cavity of the connector 3, a tight contact between the sensor and the outer casing of the thermal power generator 200 is ensured, thereby accurately capturing vibration data. The design of the connecting pipe 4 makes the communication connection between the sensor and the controller more stable and unaffected by the external environment. The electrical connection between the alarm component and the controller ensures that an audible and visual alarm is issued promptly upon detecting abnormal vibration, alerting operators to take appropriate measures and thus preventing potential equipment damage and accidents. The overall structure of the early warning device is relatively simple and improves the operational safety of the thermal power generator 200. Through real-time monitoring and timely alarms, equipment failures and downtime are reduced, enhancing equipment maintenance and management efficiency.

[0036] In an optional embodiment, for multi-point detection of vibration of the thermal power generator 200, please refer to... Figure 1 The system includes multiple connecting seats 3 and vibration sensors 5. Each connecting seat 3 is spaced apart and connected to the outer casing of the thermal power generator 200. A vibration sensor 5 is housed within the mounting cavity of one connecting seat 3, and all vibration sensors 5 are spaced apart on the outer casing of the thermal power generator 200. This design enables comprehensive, multi-point vibration monitoring of the thermal power generator 200's outer casing, thereby providing a more complete understanding of the equipment's operating status. By placing multiple sensors at different locations, the source and characteristics of vibration can be identified more accurately, improving the accuracy and reliability of the early warning system. This enhances the comprehensiveness and accuracy of vibration monitoring, and through multi-point monitoring, faults can be more effectively identified and located, improving the response speed and processing capacity of the early warning system.

[0037] In an optional embodiment, to facilitate a stable connection between the vibration sensor 5 and the thermal generator 200, the connecting seat 3 has a mounting groove 311. The mounting groove 311 is arranged around the side of the connecting seat 3 facing the thermal generator 200 and is located at the outer edge of the mounting cavity. A connector 311a is provided inside the mounting groove 311, which is used to connect the connecting seat 3 and the thermal generator 200. Please refer to... Figure 1 , Figure 3 as well as Figure 4 The vibration sensor 5 is connected to the outer casing of the thermal power generator 200 and installed in the connecting seat 3. The connecting seat 3 is connected to the outer casing of the thermal power generator 200 via the connecting piece 311a. This connection further secures and limits the vibration sensor 5, improving its stability and preventing it from loosening or falling off due to vibrations of the thermal power generator 200, thus affecting its detection performance. This design provides a stable connection, ensuring a secure connection between the connecting seat 3 and the thermal power generator 200, while also facilitating the installation and maintenance of the connecting seat 3. The mounting groove 311 allows the connecting piece 311a to be easily fixed to the connecting seat 3, which in turn connects the connecting seat 3 to the thermal power generator 200, forming a stable structure. This enhances the reliability and stability of the entire RCM-based coal-fired power generator vibration early warning monitoring device 1000.

[0038] Furthermore, the connector 311a is a magnetic component, which is snapped into the mounting groove 311 and magnetically connected to the thermal power generator 200. In actual design, the connector 311a can be an adhesive, such as high-temperature resistant adhesive, or a fastener such as a bolt or screw. The connector 311a connects the connecting seat 3 to the housing of the thermal power generator 200. In this embodiment, to facilitate operation, a magnetic structure is used to connect the connecting seat 3 to the housing of the thermal power generator 200, allowing for assembly and disassembly without tools. By setting the magnetic component as a ring structure and installing it in the annular mounting groove 311, the installation and positioning of the magnetic component are facilitated. The connector 311a is magnetically attracted to the housing of the thermal power generator 200, achieving a stable connection. In addition, the concealed design of the magnetic component also avoids its influence from the external environment, extends its service life, and ensures the stability of the connection. This design provides a quick and easy connection method, eliminating the need for complex mechanical fixings or welding. The connection between the connector 3 and the generator 200 is achieved solely through magnetic force. This magnetic connection not only simplifies the installation process but also reduces the risk of damage to the generator 200's casing, offering the possibility of rapid disassembly and maintenance, and lowering maintenance costs.

[0039] In an optional embodiment, for ease of wiring connection of the vibration sensor 5, please refer to... Figure 1 , Figure 3 as well as Figure 4 The connecting base 3 includes a base body 31 and a cover 32. The cover 32 is placed on top of the base body 31 and has a through hole. The connecting pipe 4 passes through the through hole, and the mounting groove 311 is located in the base body 31. In the actual design process, the vibration sensor 5 can be either wired or wireless. The installation structure of the wireless vibration sensor 5 is simple and does not require additional wiring, while the wired vibration sensor 5 is more stable and less susceptible to interference from the external environment, and its cost is relatively lower than that of the wireless vibration sensor 5. The specific choice can be made according to actual needs and the usage environment. When using a wired vibration sensor 5, the wire can pass through the through hole and be placed in the connecting pipe 4, extending into the mounting bracket 2 to achieve electrical connection with the controller. This also makes it easy to hide the wire, which not only protects the wire but also ensures the aesthetics of the entire RCM-based coal-fired power generator vibration early warning monitoring device 1000.

[0040] Furthermore, the connecting pipe 4 is detachably connected to the connecting seat 3 and the mounting bracket 2. Threaded connectors can be provided at both ends of the connecting pipe 4 to connect to the connecting seat 3 and the mounting bracket 2. Alternatively, clamps can be used to secure both ends of the connecting pipe 4 to the connecting seat 3 and the mounting bracket 2, respectively. This facilitates the disassembly of the connecting pipe 4. In addition, the connecting pipe 4 is a rubber hose. In this embodiment, to easily adapt to the installation height of the vibration sensor 5, a flexible rubber hose is used as the connecting pipe 4, facilitating adjustment of the overall height of the connecting pipe 4. The wear resistance and corrosion resistance of the rubber hose improve the durability of the connecting pipe 4, extend its service life, reduce damage and aging, and improve the reliability of the entire early warning device.

[0041] In an optional embodiment, to facilitate adjustment of the installation position of the vibration sensor 5, the mounting bracket 2 includes a frame 21 and a slide rail 22. A groove 211 is formed at the bottom of the frame 21, and the slide rail 22 is engaged with the groove 211 and can slide along the extending direction of the groove 211. The connecting pipe 4 is connected to the groove 211. Please refer to... Figure 1 and Figure 2The slide rail 211 is located at the bottom of the frame 21 and is formed by bending the ends of the frame 21 on both sides. The left and right ends of the slide rail 22 overlap the frame 21. In actual design, the slide rail 22 can be designed as a single piece corresponding to the frame 21 above, by connecting multiple connecting pipes 4 onto one slide rail 22. Alternatively, the slide rail 22 can be designed as a multi-segment structure, with one connecting pipe 4 corresponding to one slide rail 22. This facilitates adjustment of the vibration sensor 5's installation position on the thermal generator 200 when the overall length of the thermal generator 200 and the mounting frame 2 is relatively long. Optionally, when multiple slide rails 22 are provided, to facilitate the limiting of each slide rail 22 within the slide groove 211, multiple limiting grooves corresponding to the length of the slide rail 22 can be set within the slide groove 211. By sliding the slide rail 22 into the corresponding limiting groove at the installation position of the vibration sensor 5, the slide rail 22 is fixedly limited. When the installation position needs to be adjusted, simply lift the slide rail 22 upwards to a certain height so that it slides in conjunction with the slide groove 211. By designing the slide rail 22 and the slide groove 211, an adjustable mounting bracket 2 structure is provided, which can adjust the position and direction of the connecting pipe 4 according to actual needs to adapt to different installation environments and requirements, providing greater flexibility and adjustment range, and improving the versatility of the RCM-based coal-fired power generator vibration early warning monitoring device 1000.

[0042] For further details, please refer to... Figure 2 The top of the slide rail 22 is provided with a wire receiving groove 221, which is arranged along the extension direction of the slide rail 22. The wire receiving groove 221 can easily accommodate the wires of the vibration sensor 5, so that the wires of multiple vibration sensors 5 can be neatly stored in the mounting bracket 2, which facilitates subsequent maintenance and makes it convenient for operators to find and handle them.

[0043] In an optional embodiment, the alarm components include a warning light and a warning horn, spaced apart on the mounting bracket 2. When abnormal vibration of the thermal generator 200 is detected, an audible and visual alarm can alert the operator. The spacing of the warning light and horn ensures that the alarm signal can be noticed from different directions, improving the alarm coverage and effectiveness. This enhances the intuitiveness and effectiveness of the alarm signal, and through audible and visual alarms, improves the alarm coverage and effectiveness, increases the response speed and processing capacity of the entire early warning device, and helps to take timely measures to avoid potential equipment damage and accidents.

[0044] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A vibration early warning and monitoring device for coal-fired power generator sets based on RCM, characterized in that, include: Base; Mounting bracket, the mounting bracket being connected to the base; A connecting seat is used to connect a thermal power generator. The connecting seat has an internal mounting cavity. A connecting pipe is provided on the side of the connecting seat facing away from the thermal power generator. The connecting pipe connects the mounting cavity and the mounting frame. A vibration sensor is connected to the housing of the thermal power generator and located inside the mounting cavity; the vibration sensor is communicatively connected to the controller. An alarm component, electrically connected to the controller, is used to alarm and process abnormal vibrations of the thermal power generator.

2. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 1, characterized in that, The connecting base and the vibration sensor include multiple ones, each of the connecting bases being connected at intervals to the outer casing of the thermal power generator, and one of the vibration sensors being disposed in the mounting cavity of one of the connecting bases.

3. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 2, characterized in that, The connecting seat has a mounting groove, which is arranged around the side of the connecting seat facing the thermal generator and located on the outer edge of the mounting cavity. A connector is provided in the mounting groove, which is used to connect the connecting seat and the thermal generator.

4. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 3, characterized in that, The connector is a magnetic connector, which is snapped into the mounting slot and magnetically connected to the thermal power generator.

5. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in any one of claims 3 to 4, characterized in that, The connecting seat includes a base and a cover. The cover is placed on top of the base and has a through hole. The connecting pipe passes through the through hole, and the mounting groove is provided in the base.

6. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 1, characterized in that, The mounting bracket includes a frame and a slide rail. A groove is formed at the bottom of the frame. The slide rail is engaged in the groove and can slide along the extension direction of the groove. The connecting pipe is connected to the groove.

7. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 6, characterized in that, The top of the slide rail is provided with a wire receiving groove, which is arranged along the extension direction of the slide rail.

8. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 6, characterized in that, The connecting pipe is detachably connected to the connecting seat and the mounting bracket.

9. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 6, characterized in that, The connecting pipe is a rubber hose.

10. The RCM-based vibration early warning monitoring device for coal-fired power generating units as described in claim 6, characterized in that, The alarm component includes a warning light and a warning horn, which are spaced apart on the mounting bracket.

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