Vibration monitoring device for stirring tank
By setting up multiple acceleration sensors and eddy current displacement sensors in the gear box of the mixing tank, combined with the collector and industrial control machine, the problem of inaccurate vibration monitoring of the mixing tank in the existing technology is solved, and accurate vibration monitoring of the mixing tank is realized and Fault diagnosis to ensure the healthy and stable operation of the equipment.
Patent Information
- Application Number
- CN202421180515.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing technology has few applications in the low-speed and large-load characteristic vibration monitoring of mixing tanks, and it is impossible to detect faults in a timely and effective manner. The existing monitoring methods mainly rely on acceleration sensors and manual observation, and lack accurate fault diagnosis methods.
Multiple acceleration sensors and eddy current displacement sensors are installed in the gear box of the mixing tank, including on the gear box bearing seat, output shaft, intermediate shaft, input shaft and motor output shaft, combined with the collector and industrial control machine to perform vibration monitoring to achieve the Vibration monitoring of parts such as mixing tank bearings, gears, etc.
Through the multi-point sensor setting, the vibration of the mixing tank can be accurately reflected, and the vibration monitoring of the mixing tank motor, gearbox, and transmission system can be realized, ensuring the normal operation of the mixing tank, and providing timely fault diagnosis and maintenance reminders.
Smart Images
Figure CN222280133U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of monitoring equipment, in particular to a stirring tank vibration monitoring device. Background Art
[0002] At present, the fault diagnosis method based on vibration monitoring has been applied in various occasions and achieved good results, such as wind turbine transmission chain vibration monitoring, running frame vibration monitoring in rail transportation, steam turbine vibration monitoring in cement and petrochemical fields, large steam turbine vibration monitoring in nuclear power and thermal power fields, etc. However, there are few applications for vibration monitoring of low speed and high load characteristics such as mixing tanks.
[0003] For mixing tanks, many monitoring methods simply use acceleration sensors for monitoring, and some use manual inspection and other methods to make fault judgments by listening to the vibration sound of the mixing tank during operation and checking the wear and displacement of the bearing seat. These methods are unable to detect faults in a timely and effective manner and solve them in the bud. Utility Model Content
[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a stirring tank vibration monitoring device.
[0005] According to the utility model, a stirring tank vibration monitoring device is provided, comprising: a first acceleration sensor, a second acceleration sensor, a third acceleration sensor, a fourth acceleration sensor, a fifth acceleration sensor and an eddy current displacement sensor arranged in a gear box of the stirring tank;
[0006] The first acceleration sensor is arranged on the gearbox bearing seat, the second acceleration sensor is arranged on the gearbox output shaft, the third acceleration sensor is arranged on the gearbox intermediate shaft, the fourth acceleration sensor is arranged on the gearbox input shaft, the fifth acceleration sensor is arranged on the gearbox motor output shaft, and the eddy current displacement sensor is arranged on the gearbox rotating shaft.
[0007] Preferably, two of the first acceleration sensors are provided, and the two first acceleration sensors are respectively arranged in the axial direction of the gearbox bearing seat and in the radial direction of the gearbox bearing seat.
[0008] Preferably, two of the second acceleration sensors are provided, and the two second acceleration sensors are respectively arranged in the axial direction of the gearbox output shaft and in the radial direction of the gearbox output shaft.
[0009] Preferably, the third acceleration sensor is arranged in the radial direction of the intermediate shaft of the gearbox.
[0010] Preferably, the fourth acceleration sensor is arranged in the radial direction of the gearbox input shaft.
[0011] Preferably, the fifth acceleration sensor is arranged in the radial direction of the output shaft of the gearbox motor.
[0012] Preferably, two eddy current displacement sensors are provided, and the two eddy current displacement sensors are respectively arranged in the horizontal direction of the gear box rotating shaft and in the vertical direction of the gear box rotating shaft.
[0013] Preferably, the first acceleration sensor, the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor and the fifth acceleration sensor are all low-frequency acceleration sensors.
[0014] Preferably, it also includes a power module, a collector and an industrial computer;
[0015] The first acceleration sensor, the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor, the fifth acceleration sensor and the eddy current displacement sensor are all electrically connected to the collector, and the collector is electrically connected to the industrial computer and the power module.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] 1. The utility model can more accurately reflect the vibration of the mixing tank by arranging acceleration sensors and eddy current displacement sensors at multiple positions of the gear box of the mixing tank.
[0018] 2. The monitoring device of the utility model can realize the vibration monitoring of the bearings, gears and other parts of the mixing tank, and reflect the vibration conditions of the motor, gear box and transmission system of the mixing tank, thereby providing conditions for ensuring the normal operation of the mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0020] Figure 1 This is a schematic diagram of the distribution of the mixing tank vibration monitoring device in Example 1 on the gear box;
[0021] Figure 2 It is a schematic diagram of the structure of the stirring tank vibration monitoring device in Example 2;
[0022] Figure 3 This is a schematic diagram of the structure of the collector;
[0023] Figure 4 This is a schematic diagram of the connection between the collector and the sensor on the gearbox.
[0024] The figure shows:
[0025] Gearbox bearing seat 1 Gearbox input shaft 5
[0026] Gearbox rotating shaft 2 Gearbox motor 6
[0027] Gearbox output shaft 3 First acceleration sensor 7
[0028] Gearbox intermediate shaft 4 Eddy current displacement sensor 8 DETAILED DESCRIPTION
[0029] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.
[0030] Embodiment 1:
[0031] like Figure 1 As shown, this embodiment provides a stirring tank vibration monitoring device, including: a first acceleration sensor 7, a second acceleration sensor, a third acceleration sensor, a fourth acceleration sensor, a fifth acceleration sensor and an eddy current displacement sensor 8 arranged in the gear box of the stirring tank; the first acceleration sensor 7 is arranged on the gear box bearing seat 1, the second acceleration sensor is arranged on the gear box output shaft 3, the third acceleration sensor is arranged on the gear box intermediate shaft 4, the fourth acceleration sensor is arranged on the gear box input shaft 5, the fifth acceleration sensor is arranged on the gear box motor output shaft, and the eddy current displacement sensor 8 is arranged on the gear box rotating shaft 2.
[0032] like Figure 1 As shown, position A is the first radial acceleration sensor, position B is the first axial acceleration sensor, and position C is the eddy current displacement sensor 8, which is used to measure shaft displacement.
[0033] Two eddy current displacement sensors are provided, and the two eddy current sensors are respectively provided in the horizontal direction of the gear box rotating shaft 2 and the vertical direction of the gear box rotating shaft 2 .
[0034] Two first acceleration sensors are provided, and the two first acceleration sensors are respectively provided in the axial direction of the gearbox bearing seat 1 and in the radial direction of the gearbox bearing seat 1. Two second acceleration sensors are provided, and the two second acceleration sensors are respectively provided in the axial direction of the gearbox output shaft 3 and in the radial direction of the gearbox output shaft 3.
[0035] The third acceleration sensor is arranged in the radial direction of the gearbox intermediate shaft 4. The fourth acceleration sensor is arranged in the radial direction of the gearbox input shaft 5. The fifth acceleration sensor is arranged in the radial direction of the gearbox motor output shaft. The first acceleration sensor, the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor and the fifth acceleration sensor are all low-frequency acceleration sensors.
[0036] This embodiment can more accurately reflect the vibration condition of the mixing tank by arranging acceleration sensors and eddy current displacement sensors at multiple positions of the gear box of the mixing tank.
[0037] Embodiment 2:
[0038] like Figures 2 to 4 As shown, the difference between this embodiment and embodiment 1 is that the stirring tank vibration monitoring device of this embodiment further includes a power module, a collector and an industrial computer. The model of the power module is PRO MAX 72W 24V3A, the model of the collector is RY-DCMS-V1, and the model of the industrial computer is 4200U.
[0039] The first acceleration sensor, the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor, the fifth acceleration sensor and the eddy current displacement sensor are all electrically connected to the collector, and the collector is electrically connected to the industrial computer and the power module.
[0040] The collector includes a voltage stabilizing module, an AD acquisition circuit, a primary filter circuit, a secondary filter circuit and a core board; the input end of the voltage stabilizing module is electrically connected to the power module, and the output end of the voltage stabilizing module is electrically connected to the first input end of the AD acquisition circuit; the first acceleration sensor, the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor, the fifth acceleration sensor and the eddy current displacement sensor are all electrically connected to the input end of the primary filter circuit, and the output end of the primary filter circuit is electrically connected to the second input end of the AD acquisition circuit; the output end of the AD acquisition circuit is electrically connected to the input end of the secondary filter circuit, and the output end of the secondary filter circuit is electrically connected to the core board.
[0041] Embodiment 3:
[0042] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.
[0043] like Figures 1 to 4 As shown, this embodiment provides a stirring tank vibration monitoring system, which comprises a power module, a collector, an eddy current sensor, and a low-frequency acceleration sensor. Based on existing software products, an industrial computer and a 4G module can be added.
[0044] The power module is responsible for powering the equipment and can convert 220V AC power into 24VDC power. It collects the displacement data of the drive shaft through eddy current sensors and the vibration data of bearings, gears and other components through low-frequency acceleration sensors and uploads them to the collector. It transmits the processed data to the industrial computer through Ethernet and transmits the data to the public network server through the 4G module.
[0045] like Figure 4 As shown, the utility model provides a corresponding collector, which is composed of a voltage stabilizing module, an AD acquisition circuit, a primary filtering circuit, a secondary filtering circuit and a core board. The voltage stabilizing module ensures the stability of the power supply voltage and protects the circuit; the voltage signal enters the AD acquisition circuit through the primary filtering circuit, and the signal-to-noise ratio is improved through the secondary filtering, and the collected data is transmitted to the core board. The core board performs integral calculations and unit conversions, and then outputs the data to the industrial computer through Ethernet.
[0046] like Figure 1 As shown, this embodiment determines the installation position of the sensor measuring point; selects each measuring point for the vibration monitoring of the mixing tank to install the sensor; installs the low-frequency acceleration sensor in the axial and radial directions of the bearing seat; installs the low-frequency acceleration sensor in the axial and radial directions of the gearbox output shaft; installs the low-frequency acceleration sensor in the radial direction of the gearbox intermediate shaft, the radial direction of the input shaft and the radial direction of the output shaft of the generator. An eddy current sensor is installed in the horizontal direction and the vertical direction of the rotating shaft to collect displacement data and analyze the rotor axis trajectory. See Table 1 below.
[0047] Table 1
[0048]
[0049]
[0050] In summary, real-time vibration monitoring of the mixing tank equipment is achieved to ensure its healthy and stable operation.
[0051] This embodiment provides a stirring tank vibration monitoring system using vibration analysis, including a waterproof box, a collector, a low-frequency acceleration sensor, an eddy current displacement sensor, an industrial computer and other installation accessories. The collector is used to collect vibration data. Based on the existing data processing software, background processing software can also be added.
[0052] Low-frequency acceleration sensors and eddy current sensors are combined with a wind power vibration monitoring system to monitor the vibration of the mixing tank and provide conditions for ensuring its healthy operation. The system includes sensor measurement point distribution to accurately capture vibration conditions; system configuration components to determine the collection of physical quantities such as acceleration and position; fault judgment methods to determine the vibration health of the mixing tank; and finally, through human-computer interaction, reminding operation and maintenance personnel to maintain and replace faulty components.
[0053] The stirring tank vibration monitoring system of the present embodiment is a stirring tank vibration monitoring system using vibration analysis, which can realize vibration monitoring of the stirring tank to ensure the healthy and stable operation of the equipment. The monitoring device of the present embodiment can monitor the vibration of the stirring tank in real time online, including the acceleration vibration values and displacement values of the bearings and gears. The monitoring device of the present embodiment is equipped with a collector that can support low-frequency acceleration sensors and eddy current sensors to realize real-time processing of collected data. Multi-point measurement and data coupling analysis methods can realize fault diagnosis.
[0054] The utility model can more accurately reflect the vibration condition of the mixing tank by arranging acceleration sensors and eddy current displacement sensors at multiple positions of the gear box of the mixing tank.
[0055] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0056] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.
Claims
1. A stirring tank vibration monitoring device, characterized in that: include: A first acceleration sensor (7), a second acceleration sensor, a third acceleration sensor, a fourth acceleration sensor, a fifth acceleration sensor and an eddy current displacement sensor (8) arranged in a gear box of the stirring tank; The first acceleration sensor (7) is arranged on a gearbox bearing seat (1), the second acceleration sensor is arranged on a gearbox output shaft (3), the third acceleration sensor is arranged on a gearbox intermediate shaft (4), the fourth acceleration sensor is arranged on a gearbox input shaft (5), the fifth acceleration sensor is arranged on a gearbox motor output shaft, and the eddy current displacement sensor (8) is arranged on a gearbox rotating shaft (2).
2. The stirring tank vibration monitoring device according to claim 1, characterized in that: The first acceleration sensors (7) are provided in two numbers, and the two first acceleration sensors (7) are respectively arranged in the axial direction of the gearbox bearing seat (1) and in the radial direction of the gearbox bearing seat (1).
3. The stirring tank vibration monitoring device according to claim 1, characterized in that: The number of the second acceleration sensors is two, and the two second acceleration sensors are respectively arranged in the axial direction of the gearbox output shaft (3) and in the radial direction of the gearbox output shaft (3).
4. The stirring tank vibration monitoring device according to claim 1, characterized in that: The third acceleration sensor is arranged in the radial direction of the gearbox intermediate shaft (4).
5. The stirring tank vibration monitoring device according to claim 1, characterized in that: The fourth acceleration sensor is arranged in the radial direction of the gearbox input shaft (5).
6. The stirring tank vibration monitoring device according to claim 1, characterized in that: The fifth acceleration sensor is arranged in the radial direction of the output shaft of the gearbox motor.
7. The stirring tank vibration monitoring device according to claim 1, characterized in that: The eddy current displacement sensors (8) are arranged in two numbers, and the two eddy current displacement sensors (8) are arranged in the horizontal direction of the gear box rotating shaft (2) and in the vertical direction of the gear box rotating shaft (2), respectively.
8. The stirring tank vibration monitoring device according to claim 1, characterized in that: The first acceleration sensor (7), the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor and the fifth acceleration sensor are all low-frequency acceleration sensors.
9. The stirring tank vibration monitoring device according to claim 1, characterized in that: It also includes power modules, collectors and industrial computers; The first acceleration sensor (7), the second acceleration sensor, the third acceleration sensor, the fourth acceleration sensor, the fifth acceleration sensor and the eddy current displacement sensor (8) are all electrically connected to the collector, and the collector is electrically connected to the industrial computer and the power module.