Novel online monitoring device for built-in bearing of desulfurization and denitrification fan

Abstract

The utility model relates to the field of bearing on-line monitoring, and discloses a novel desulfurization and denitrification fan built-in bearing on-line monitoring device which comprises a bearing base, the bearing base is arranged in a shell, three sets of bearings are arranged in the bearing base, the axial surface and the horizontal surface of the bearing base are each provided with an M6 threaded hole, and the M6 threaded holes are communicated with the bearing base. An acceleration vibration sensor is arranged in the M6 threaded hole, the acceleration vibration sensor is electrically connected with an IMx-8 collector through a cable, the cable is an armored cable, and the IMx-8 collector is electrically connected with a local area wireless network. Data detected by the acceleration vibration sensor can be transmitted to the IMx-8 collector through an armored cable, the operation state of the bearing base can be analyzed through a frequency domain spectrum, a time domain spectrum, an envelope spectrum, a cepstrum and the like, meanwhile, vibration values collected by the acceleration vibration sensor in real time form a vibration trend, intelligent alarm and threshold alarm are achieved, and the service life of the bearing base is prolonged. Therefore, the operation state of the bearing can be effectively mastered, equipment hidden dangers can be predicted in advance, and accidents are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bearing online monitoring, specifically to a novel desulfurization and denitrification fan built-in bearing online monitoring device. BACKGROUND

[0002] The desulfurization and denitrification fan built-in bearing is one of the key components of the fan. It has high precision and high reliability, and can operate stably under harsh conditions. Its design focuses on high temperature resistance, corrosion resistance and other characteristics to adapt to the complex environment in the desulfurization and denitrification process. When the fan is running, the built-in bearing effectively supports the rotor rotation, reduces friction resistance, and ensures stable output of air volume and pressure.

[0003] In the prior art, the bearings of sintering booster fan, pellet booster fan and semi-dry process induced draft fan have frequently appeared abnormal in the past three years, which seriously affects the production line production. Because the bearing is inside the fan, the current bearing state cannot be effectively monitored, and only shell vibration and temperature are monitored. Once the bearing overheats and vibrates abnormally, the bearing has reached the end of its life, and the repair and replacement at this time may be too late, which will inevitably affect the sintering production and increase the probability of accidents. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a novel desulfurization and denitrification fan built-in bearing online monitoring device to solve the problem that once the bearing vibrates abnormally, the bearing has reached the end of its life, and the repair and replacement at this time may be too late, which will inevitably affect the sintering production and increase the probability of accidents.

[0005] In order to achieve the above-mentioned utility model purposes, the utility model adopts the following technical scheme: a novel desulfurization and denitrification fan built-in bearing online monitoring device, comprising a bearing base, the bearing base is arranged in the inside of the shell, three groups of bearings are arranged in the inside of the bearing base, a cold air cover is arranged on one side of the bearing base, a transmission short pipe is arranged at one end of the cold air cover, M6 thread holes are arranged on the axial surface and the horizontal surface of the bearing base, an acceleration vibration sensor is arranged in the inside of the M6 thread hole, the acceleration vibration sensor and the IMx-8 collector are electrically connected through a cable, the cable is an armored cable, and the IMx-8 collector is electrically connected with a local area wireless network.

[0006] Preferably, a plurality of front shaft temperature measuring holes are arranged on the surface of the cold air cover, a plurality of middle shaft temperature measuring holes are arranged on the surface of the cold air cover, a plurality of rear shaft temperature measuring holes are arranged on the surface of the cold air cover, platinum resistance wires are arranged in the inside of the front shaft temperature measuring holes, the middle shaft temperature measuring holes and the rear shaft temperature measuring holes, lead wires are arranged at one end of the platinum resistance wires, and the platinum resistance wires and the lead wires are electrically connected.

[0007] Preferably, the inside of the shell is rotatably provided with a bearing and an impeller, the left side of the cold air cover is provided with a shaft coupling, and the cold air cover is provided with a gland between the shaft coupling.

[0008] Preferably, the other end of the cold air cover is connected with a cold air pipe, and the surface of the cold air pipe is sleeved with a snake pipe.

[0009] Preferably, one end of the transmission short pipe is detachably provided with a transmission intermediate shaft, the end of the transmission short pipe close to the transmission intermediate shaft is fixed with a front flange plate, the end of the transmission intermediate shaft close to the transmission short pipe is fixed with a rear flange plate, a plurality of fixing bolts are rotatably inserted into the rear flange plate, and the ends of the fixing bolts are threadedly connected with nuts through the front flange plate.

[0010] Preferably, the surface of the snake pipe is wound with iron wires for binding the snake pipe.

[0011] Compared with the prior art, the online monitoring device for the built-in bearing of the desulfurization and denitrification fan has the following beneficial effects:

[0012] I. During the operation, the vibration of the bearing box caused by the operation of the three groups of bearings in the bearing base is sensed and detected by the acceleration vibration sensor installed inside. The data detected by the acceleration vibration sensor is transmitted to the IMx-8 collector through the armored cable, and then transmitted to the server through the local area wireless network. Then, the data is transmitted to any computer in the Internet through the switch. The running state of the bearing base can be analyzed by frequency domain spectrum, time domain spectrum, envelope spectrum, and cepstrum. At the same time, the vibration value collected by the acceleration vibration sensor in real time forms a vibration trend. When the vibration trend is abnormal, intelligent alarm and threshold alarm are realized. The running state of the bearing can be effectively mastered, potential equipment hazards can be predicted in advance, and accidents can be avoided.

[0013] II. As the bearings in the bearing box operate, the bearings will accumulate heat due to sliding friction. At this time, the platinum thermal resistance will detect the temperature inside the bearing base in real time. After detecting the temperature, the platinum thermal resistance converts the data into an electrical signal and transmits it to the computer through the lead-out wire. The temperature change is calculated, and the staff can make corresponding treatment according to the detection result, thereby increasing the safety of the bearing box.

[0014] III. When the snake pipe is sleeved on the surface of the cold air pipe, the staff will wind the iron wires on the surface of the snake pipe, thereby increasing the firmness of the snake pipe at the position on the surface of the cold air pipe. The transmission short pipe and the transmission intermediate shaft are spliced together through the front flange plate and the rear flange plate, and are fixed together through the fixing bolts passing through the front flange plate and the rear flange plate, and finally the front flange plate and the rear flange plate are fixed together through the nuts, thereby increasing the firmness between the transmission short pipe and the transmission intermediate shaft. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The plane view of the embodiment.

[0016] Figure 2 The sectional view of the gland in the embodiment.

[0017] Figure 3 The rear view of the cooling hood in the embodiment.

[0018] Figure 4 The sectional view of the cooling hood in the embodiment.

[0019] Figure 5 The plane view of the bearing pedestal in the embodiment.

[0020] Figure 6 The vibration value trend chart in the embodiment.

[0021] Figure 7 The frequency domain spectrum chart in the embodiment.

[0022] Figure 8 The time domain spectrum chart in the embodiment.

[0023] Figure 9 The online monitoring data transmission schematic diagram of the embodiment.

[0024] In the figure: 1, the shell; 2, the bearing pedestal; 3, the nipple short pipe; 4, the M6 threaded hole; 5, the acceleration vibration sensor; 6, the cooling pipe; 7, the snake pipe; 8, the torque intermediate shaft; 9, the impeller; 10, the coupling; 11, the gland; 12, the cooling hood; 13, the front shaft temperature measuring hole; 14, the intermediate shaft temperature measuring hole; 15, the front flange plate; 16, the rear flange plate; 17, the fixing bolt; 18, the nut; 19, the platinum resistance; 20, the lead-out wire; 21, the rear shaft temperature measuring hole. DETAILED DESCRIPTION

[0025] The preferred embodiment of the utility model is described in detail below with reference to the drawings.

[0026] As Figures 1-8 shown, a novel desulfurization and denitrification fan built-in bearing online monitoring device, including bearing pedestal 2, bearing pedestal 2 is arranged in the inside of shell 1, the inside of bearing pedestal 2 is provided with three groups of bearings, one side of bearing pedestal 2 is provided with cooling hood 12, one end of cooling hood 12 is provided with nipple short pipe 3, the axial surface of bearing pedestal 2 and the surface of horizontal direction are all provided with M6 threaded hole 4, the inside of M6 threaded hole 4 is provided with acceleration vibration sensor 5, acceleration vibration sensor 5 is electrically connected with IMx-8 collector through cable, the cable is armored cable, IMx-8 collector is electrically connected with local area wireless network.

[0027] In use, during the operation, the bearing base 2 will vibrate due to the operation of the three groups of bearings inside, the vibration of the bearing box will be sensed by the acceleration vibration sensor 5 installed in the M6 threaded hole 4, the data detected by the acceleration vibration sensor 5 will be transmitted to the IMx-8 collector through the armored cable, and then transmitted to the server through the local area wireless network, and then the data is transmitted to any computer in the Internet through the switch. The running state of the bearing base 2 can be analyzed by frequency domain spectrum, time domain spectrum, envelope spectrum, and cepstrum. At the same time, the vibration value collected by the acceleration vibration sensor 5 forms a vibration trend, and when the vibration trend is abnormal, intelligent alarm and threshold alarm are realized, so that the running state of the bearing can be effectively mastered, potential equipment hazards can be predicted in advance, and accidents can be avoided.

[0028] As shown in Figures 1-4 , the surface of the cold air cover 12 is provided with a plurality of front shaft temperature measuring holes 13, the surface of the cold air cover 12 is provided with a plurality of middle shaft temperature measuring holes 14, and the surface of the cold air cover 12 is provided with a plurality of rear shaft temperature measuring holes 21. The inside of the front shaft temperature measuring hole 13, the middle shaft temperature measuring hole 14 and the rear shaft temperature measuring hole 21 is provided with a platinum resistance 19. One end of the platinum resistance 19 is provided with a lead wire 20. The platinum resistance 19 and the lead wire 20 are electrically connected.

[0029] In use, with the operation of the bearings inside the bearing box, the bearings will accumulate heat due to sliding friction. At this time, the platinum resistance 19 will detect the temperature inside the bearing base 2 in real time. After detecting the temperature, the platinum resistance 19 will convert the data into an electrical signal and transmit it to the computer through the lead wire 20, and calculate the temperature change. The workers can make corresponding treatment according to the detection results, which increases the safety of the bearing box.

[0030] As shown in Figure 1 and Figure 2 , the inside of the shell 1 is rotatably provided with a bearing and an impeller 9. The left side of the cold air cover 12 is provided with a shaft coupling 10. The cold air cover 12 and the shaft coupling 10 are provided with a gland 11. The other end of the cold air cover 12 is connected with a cold air pipe 6. The surface of the cold air pipe 6 is sleeved with a leather pipe 7. One end of the transmission short pipe 3 is detachably provided with a transmission intermediate shaft 8. The end of the transmission short pipe 3 close to the transmission intermediate shaft 8 is fixedly provided with a front flange plate 15. The end of the transmission intermediate shaft 8 close to the transmission short pipe 3 is fixedly provided with a rear flange plate 16. A plurality of fixing bolts 17 are rotatably inserted into the rear flange plate 16. One end of the fixing bolt 17 penetrating through the front flange plate 15 is threadedly connected with a nut 18. The surface of the leather pipe 7 is wound with an iron wire for binding the leather pipe 7.

[0031] In use, when the snake pipe 7 is sleeved on the surface of the cold air pipe 6, the worker will wind the iron wire on the surface of the snake pipe 7, thereby the firmness of the snake pipe 7 on the surface of the cold air pipe 6 can be increased, the transmission short pipe 3 and the transmission intermediate shaft 8 are spliced together through the front flange plate 15 and the rear flange plate 16, and are fixed together through the fixing bolts 17 penetrating through the front flange plate 15 and the rear flange plate 16, and finally the front flange plate 15 and the rear flange plate 16 are fixed together through the nuts 18, so that the firmness between the transmission short pipe 3 and the transmission intermediate shaft 8 is increased.

[0032] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A novel online monitoring device for built-in bearing of desulfurization and denitrification fan, comprising a bearing base (2) arranged in the inside of a shell (1), characterized in that, The inside of the bearing base (2) is provided with three groups of bearings, one side of the bearing base (2) is provided with a cold air cover (12), one end of the cold air cover (12) is provided with a transmission short pipe (3), the axial surface of the bearing base (2) and the horizontal surface are both provided with M6 threaded holes (4), the inside of the M6 threaded hole (4) is provided with an acceleration vibration sensor (5), the acceleration vibration sensor (5) is electrically connected with the IMx-8 collector through a cable, the cable is an armored cable, the IMx-8 collector is electrically connected with a local area wireless network.

2. A novel online monitoring device for bearings of a desulfurization and denitrification fan according to claim 1, characterized in that: The surface of the cold air cover (12) is provided with a plurality of front shaft temperature measuring holes (13), the surface of the cold air cover (12) is provided with a plurality of middle shaft temperature measuring holes (14), the surface of the cold air cover (12) is provided with a plurality of rear shaft temperature measuring holes (21), the inside of the front shaft temperature measuring hole (13), the middle shaft temperature measuring hole (14) and the rear shaft temperature measuring hole (21) is provided with a platinum resistance (19), one end of the platinum resistance (19) is provided with a lead-out wire (20), the platinum resistance (19) is electrically connected with the lead-out wire (20).

3. The novel online monitoring device for bearings of a desulfurization and denitrification fan according to claim 1, characterized in that: The inside of the shell (1) is rotatably provided with a bearing and an impeller (9), the left side of the cold air cover (12) is provided with a shaft coupling (10), the cold air cover (12) and the shaft coupling (10) are provided with a gland (11).

4. The novel online monitoring device for bearings built in desulfurization and denitrification fan according to claim 1, characterized in that: The other end of the cold air cover (12) is connected with a cold air pipe (6), the surface of the cold air pipe (6) is sleeved with a snake pipe (7).

5. The novel online monitoring device for bearings of a desulfurization and denitrification fan according to claim 1, characterized in that: One end of the transmission short pipe (3) is detachably provided with a transmission intermediate shaft (8), one end of the transmission short pipe (3) close to the transmission intermediate shaft (8) is fixedly provided with a front flange plate (15), one end of the transmission intermediate shaft (8) close to the transmission short pipe (3) is fixedly provided with a rear flange plate (16), a plurality of fixing bolts (17) are rotatably inserted into the rear flange plate (16), one end of the fixing bolt (17) passes through the front flange plate (15) and is threadedly connected with a nut (18).

6. The novel online monitoring device for bearings of a desulfurization and denitrification fan according to claim 4, characterized in that: The surface of the snake pipe (7) is wound with an iron wire for binding the snake pipe (7).

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