Large induced draft fan vibration monitoring device

Abstract

The utility model belongs to the technical field of fan monitoring, and discloses a large induced draft fan vibration monitoring device which comprises an induced draft fan, a fixing plate is welded to the edge of the bottom end of an air inlet of the induced draft fan, a clamping column is arranged in the center of the bottom end of the fixing plate, and a sensor is connected to the outer surface of the clamping column in a sleeved mode. The bottom end of the outer surface of the sensor is sleeved with a lantern ring, a bottom plate is welded to the bottom end of the lantern ring, the interior of the bottom plate is in threaded connection with a screw rod, the screw rod penetrates through the interior of the bottom plate and the interior of the fixing plate, a nut is installed on the outer surface of the screw rod through a thread, and the outer surface of the sensor is sleeved with an annular scraping plate. The stability of the sensor in a working environment is ensured through the fixing plate, measurement errors caused by unstable installation are avoided, the installed annular scraper can effectively remove dust on the surface of the sensor, the situation that dust enters the sensor and abrades an induction area of the sensor is avoided, and therefore the accuracy and stability of monitoring data are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan monitoring technical field, especially, relate to a large -scale induced draft fan vibration monitoring devices. BACKGROUND

[0002] In the application of traditional large -scale induced draft fan, because the working environment of fan is complex, external factor and internal dynamic change can have remarkable influence to the operation state of fan, especially vibration problem, it not only influences normal operation efficiency of fan, can also lead to the early termination of fan service life, thereby needs sensor to monitor.

[0003] Because induced draft fan uses simultaneously, dust and chippings are attached in the induction area of sensor under the influence of induced draft fan suction, influence normal work of sensor, reduce monitoring precision. UTILITY MODEL CONTENTS

[0004] The utility model discloses to the problem of sensor's normal work being influenced and monitoring precision being reduced in prior art due to dust and chippings being attached in the induction area of sensor under the influence of induced draft fan suction while induced draft fan uses simultaneously, propose the following technical scheme:

[0005] A large -scale induced draft fan vibration monitoring devices, including induced draft fan, the air inlet bottom end of the induced draft fan is welded with fixed plate, the bottom end center of fixed plate is provided with the clamping column, the outer surface of clamping column is sleeved with sensor, the outer surface bottom end position of sensor is sleeved with the eye -ring, the bottom end of eye -ring is welded with bottom plate, the inside of bottom plate is connected with screw rod through screw, the inside of screw rod is penetrated to bottom plate and fixed plate, the outer surface of screw rod is installed with nut through screw, the outer surface of sensor is sleeved with annular scraper, the outer surface of annular scraper is fixedly installed with connecting rod, the top end one side of connecting rod is fixedly installed with long pole.

[0006] As the preferred of above technical scheme, the both ends of fixed plate one side are fixedly installed with the plug -in column, the inside of two plug -in columns is all installed with the clamping sleeve, the bottom end between two clamping sleeves is connected with fixed rod, the top end center of fixed rod is fixedly installed with rotating seat, the inside of rotating seat is rotatably connected with rotating head, the top end of rotating head is rotatably connected with venturi, the air inlet edge of venturi is rotatably connected with filter screen, and the air outlet of venturi is connected in the inside of annular scraper.

[0007] As the preferred of above technical scheme, the both sides of long pole bottom end are fixedly installed with spring, and the bottom end of two springs is fixedly installed on the top end of fixed plate.

[0008] As the preferred of above technical scheme, the outer surface of screw rod is sleeved with rubber ring, one end of rubber ring is attached to the bottom end of bottom plate, and the other end of rubber ring is attached to the top end of nut.

[0009] As the preferred technical solution, the inner surface of the sleeve ring is provided with a rubber strip, and the outer surface of the sleeve ring is provided with a plurality of long grooves.

[0010] As the preferred technical solution, the inner surface of the sleeve ring is provided with a rubber strip.

[0011] The beneficial effects of the present application are as follows:

[0012] (1) The fixed plate ensures the stability of the sensor during work, avoids measurement errors caused by unstable installation, and the installed annular scraper can effectively remove dust on the surface of the sensor, avoiding dust from entering the sensing area of the sensor to cause wear, thereby ensuring the accuracy of the monitoring data.

[0013] (2) The Venturi tube collects and guides the wind, and the design of the air inlet makes the wind entering the Venturi tube, and the wind power of the air outlet is strengthened due to the gradually smaller pipeline, thereby effectively blowing and cleaning the dust attached to the annular scraper, and further ensuring the accuracy of the monitoring data. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure schematic diagram of a large induced draft fan vibration monitoring device in embodiment 1 is shown.

[0015] Figure 2 A mounting structure schematic diagram of a bottom plate in embodiment 1 is shown.

[0016] Figure 3 A mounting structure schematic diagram of a sleeve ring in embodiment 1 is shown.

[0017] Figure 4 A mounting structure schematic diagram of a sensor in embodiment 1 is shown.

[0018] In the figure: 1, induced draft fan; 2, fixed plate; 3, clamping column; 4, sensor; 5, sleeve ring; 6, bottom plate; 7, screw; 8, rubber ring; 9, nut; 10, connecting rod; 11, spring; 12, long rod; 13, annular scraper; 14, plug-in column; 15, clamping sleeve; 16, fixed rod; 17, filter screen; 18, rotating seat; 19, rotating head; 20, Venturi tube. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely in combination with embodiments.

[0020] Embodiment 1: The present application provides a large induced draft fan 1 vibration monitoring device, like Figures 1 to 4As shown, including, the fan 1, the fan 1 air inlet bottom end edge welding has fixed plate 2, fixed plate 2 bottom end center is provided with the clamping column 3, the outer surface of the clamping column 3 is sleeved with sensor 4, the model of sensor 4 is UW-2000 type multi-source fusion sensor, it is an integrated vibration, noise, magnetic field, temperature perception as one of the intelligent sensor, and embedded with intelligent computing chip, realize from multiple signal extraction fault characteristics, such as vibration signal spectrum analysis, sound signal spectrum analysis, magnetic field data analysis, current fingerprint signal characteristic gap, temperature signal trend, etc., for the mature sensor model known to those skilled in the art, will not be described here, the outer surface of the sensor 4 is sleeved with the ring 5, the bottom end of the ring 5 is welded with the bottom plate 6, the inside of the bottom plate 6 is connected with the screw rod 7 through the thread, the screw rod 7 penetrates the inside of the bottom plate 6 and the fixed plate 2, the outer surface of the screw rod 7 is installed with the nut 9 through the thread, the outer surface of the sensor 4 is sleeved with the ring-shaped scraper 13, the outer surface of the ring-shaped scraper 13 is fixedly installed with the connecting rod 10, the top end of the connecting rod 10 is fixedly installed with the long rod 12;

[0021] As Figure 2 and 3 shown, the fixed plate 2 one side both ends are fixedly installed with the plug-in column 14, the inside of the two plug-in columns 14 is clamped and installed with the clamping sleeve 15, the bottom end between the two clamping sleeves 15 is connected with the fixed rod 16, the top end center of the fixed rod 16 is fixedly installed with the rotating seat 18, the inside of the rotating seat 18 is rotatably connected with the rotating head 19, the top end of the rotating head 19 is rotatably connected with the venturi tube 20, the air inlet edge of the venturi tube 20 is rotatably connected with the filter screen 17, the air outlet of the venturi tube 20 is connected to the inside of the ring-shaped scraper 13, the wind is collected and guided through the venturi tube 20, after the wind passes through the filter screen 17 and enters the venturi tube 20, the wind power of the air outlet is strengthened due to the gradually smaller pipeline, so that the dust attached to the ring-shaped scraper 13 can be effectively blown and cleaned, thereby ensuring the accuracy of the monitoring data.

[0022] As Figure 2 and 3 shown, the bottom end of the long rod 12 is fixedly installed with the spring 11 on both sides, the bottom end of the two springs 11 is fixedly installed on the top end of the fixed plate 2, the spring 11 is deformed and shrunk by pressing the long rod 12, the ring-shaped scraper 13 connected with the long rod 12 through the connecting rod 10 moves downward to scrape off the dust, after the hand is released, the spring 11 loses the extrusion force and expands, pushes the long rod 12 to move upward, so that the ring-shaped scraper 13 returns to the original state, and the gap between the sensor and the fixed plate 2 plays a blocking role, avoiding the dust from entering the sensing area inside the sensor through the gap.

[0023] As Figure 2 and 3As shown, the outer surface of the screw rod 7 is sleeved with a rubber ring 8, one end of the rubber ring 8 is attached to the bottom end of the bottom plate 6, and the other end of the rubber ring 8 is attached to the top end of the nut 9, the stability of the nut 9 and the screw rod 7 is increased through the rubber ring 8, which helps to prevent the screw rod 7 and the nut 9 from loosening due to vibration.

[0024] As shown in Figure 3 and 4 , the inner surface of the sleeve ring 5 is provided with a rubber strip, the outer surface of the sleeve ring 5 is provided with a plurality of long grooves, the wiring of the sensor 4 is located inside the long groove, the long groove provides space for the wiring of the sensor 4, and the rubber strip increases the friction between the outer surface of the sensor 4 and the inside of the sleeve ring 5, preventing the sensor 4 from rotating inside the sleeve ring 5 due to the vibration of the induced draft fan 1, preventing the rotation of the sensor 4 from affecting the stability of the monitoring data.

[0025] As shown in Figure 2 and 4 , the inner surface of the sleeve ring 5 is provided with a rubber strip, the rubber strip increases the friction between the outer surface of the sensor 4 and the inside of the sleeve ring 5, preventing the sensor 4 from rotating inside the sleeve ring 5 due to the vibration of the induced draft fan 1, the rubber strip plays a role of anti-skid, preventing the rotation of the sensor 4 from affecting the stability of the monitoring data.

[0026] Working principle: first, fix the sensor 4, because the large induced draft fan 1 has large wind power, when the induced draft fan 1 sucks air into the fan, dust around the fan inlet will adhere to the sensor 4, press the long rod 12 to deform the spring 11, the ring-shaped scraper 13 connected by the connecting rod 10 and the long rod 12 moves downward to scrape off the dust, at the same time, the venturi tube 20 is driven to rotate downward, the rotating seat 19 rotates inside the rotating seat 18, after releasing the hand, the spring 11 loses the extrusion force and expands, pushing the long rod 12 to move upward, the ring-shaped scraper 13 returns to its original state, and plays a blocking role between the sensor and the fixed plate 2, preventing dust from entering the sensing area inside the sensor through the gap, then rotate the filter screen 17, so that the filter screen 17 covers the air inlet of the venturi tube 20, when the induced draft fan 1 introduces air, part of the air will pass through the filter screen 17 and enter from the air inlet of the venturi tube 20, and the air is collected and guided through the venturi tube 20, because the pipeline gradually becomes smaller, the wind power of the air outlet is strengthened, so that the dust adhering to the ring-shaped scraper 13 can be effectively blown and cleaned, thereby ensuring the accuracy of the monitoring data.

[0027] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them.

Claims

1. A large induced draft fan vibration monitoring device characterized by, The utility model provides an air -inducing fan, the bottom end of the air -inducing fan (1) is welded with fixed plate (2), the bottom end center of fixed plate (2) is provided with the clamping column (3), the outer surface of clamping column (3) is sleeved with sensor (4), the outer surface bottom end position of sensor (4) is sleeved with the thimble (5), the bottom end of thimble (5) is welded with bottom plate (6), the inside of bottom plate (6) is connected with screw rod (7) through screw thread, the inside of bottom plate (6) and fixed plate (2) is penetrated to screw rod (7), the outer surface of screw rod (7) is installed with nut (9) through screw thread, the outer surface of sensor (4) is sleeved with annular scraper (13), the outer surface of annular scraper (13) is fixedly installed with connecting rod (10), long rod (12) is fixedly installed on the top end one side of connecting rod (10).

2. The large induced draft fan vibration monitoring apparatus according to claim 1, characterized by, The utility model discloses a fixed plate (2) one side both ends are fixedly installed with the spigot (14), and the inside of two spigots (14) are all clamped with the clamping sleeve (15), and the bottom between two clamping sleeves (15) is connected with the fixed link (16), and the top center of fixed link (16) is fixedly installed with the rotary seat (18), and the inside of rotary seat (18) is rotatably connected with the rotary head (19), and the top of rotary head (19) is rotatably connected with the venturi (20), and the air inlet edge of venturi (20) is rotatably connected with the filter screen (17), and the air outlet of venturi (20) is connected in annular scraper (13) inside.

3. The large induced draft fan vibration monitoring apparatus according to claim 2, characterized by, The bottom of long rod (12) both sides is fixedly installed with spring (11), and the bottom of two springs (11) is fixedly installed on the top of fixed plate (2).

4. The large induced draft fan vibration monitoring apparatus according to claim 2, characterized by The outer surface of screw rod (7) is sleeved with rubber ring (8), one end of rubber ring (8) is attached to the bottom of bottom plate (6), and the other end of rubber ring (8) is attached to the top of nut (9).

5. The large induced draft fan vibration monitoring apparatus according to claim 2, characterized by The inner surface of thimble (5) is provided with rubber strip, a plurality of long grooves are formed in the outer surface of thimble (5), and the wiring of sensor (4) is located at the inside of long groove.

6. The large induced draft fan vibration monitoring apparatus according to claim 2, characterized by The inner surface of thimble (5) is provided with rubber strip.

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