Improved dust removal fan vibration monitoring device

Abstract

An improved dust removal fan vibration monitoring device is characterized in that the bottom of a vibration measurement sensor is mounted at one end of a high-temperature-resistant alloy rubber mat, and the other end of the high-temperature-resistant alloy rubber mat is connected with a square magnetic seat. The improved dust removal fan vibration monitoring device has the advantages that by increasing the size of the vibration measurement sensor, the stress area of the sensor and a fan bearing is enlarged, the impact force of fan vibration on the sensor is reduced, the high-temperature-resistant alloy rubber mat is additionally arranged between the vibration measurement sensor and the magnetic base, the magnetic base is changed into a square magnetic base, and therefore the vibration measurement accuracy is improved. The high-precision vibration measuring device is formed by arranging a square magnetic seat, adding a magnetic rod at the bottom of the square magnetic seat, changing a circuit structure, changing an original integrating circuit and an amplifying circuit into an amplifying and filtering circuit, additionally arranging a power supply conditioning and current output power supply circuit, linearizing and normalizing a vibration signal sampled by a sensor through a transmitter and then directly outputting a 4-20m ADC signal. The detection precision, the signal processing capability and the high temperature resistance are improved, and the anti-interference capability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal fan monitoring equipment field, concretely relates to an improved dust removal fan vibration monitoring device. BACKGROUND

[0002] Dust removal fan monitoring system is mainly composed of fan, high voltage motor, high voltage frequency converter, front and rear bearing vibration detection device, temperature pressure detection and PLC control etc. High voltage frequency converter drives high voltage motor to control in different frequency stages, motor drives fan to rotate at high speed, and the coal gas generated in converter smelting process is transported to coal gas tank. But the current fan is the old fan without vibration detection hole, and the vibration detection device is composed of magnetic base, vibration sensor and vibration protection transmission device, which still has the following shortcomings:

[0003] 1. The dust removal fan motor is installed in the relatively closed dust removal room, and the heat is emitted during the continuous high-speed operation, the heat transfer speed to the outside of the room is slow, the environmental temperature of the vibration sensor area or the fan bearing body temperature is sometimes as high as 65 DEG C, the vibration sensor is often scalded and damaged by vibration;

[0004] 2. The vibration sensor is screwed into the magnetic base, the magnetic base is adhered to the dust removal fan bearing, the sensor is directly connected with the magnetic base, the fan vibration force is directly applied to the sensor, and the sensor is not protected by the rubber pad buffer, and the magnetic base is not designed with super strong magnetic force, the bottom surface of the magnetic base is flat, the surface of the fan bearing is arc-shaped and uneven, the connection between the two is not firm, the magnetic base and the vibration sensor are often detached during the high-speed operation of the fan, no vibration data is displayed, real-time detection cannot be realized, and the fan bearing vibration condition cannot be tracked in real time;

[0005] 3. The vibration sensor circuit does not have a filter, and does not have an independent power supply, the output signal is pulse without being converted into 4-20mADC standard signal, is easily affected by high voltage frequency converter, and the data display often jumps or fluctuates, the existing fault cannot be detected or diagnosed before the equipment fails according to the monitoring result, the equipment fault or fault trend cannot be found in time, the traditional accident regular maintenance cannot be changed into modern predictive maintenance, and the fan operation condition cannot be analyzed and guided. UTILITY MODEL CONTENTS

[0006] The utility model discloses a purpose lies in the deficiency and defect among the prior art, provide an improved dust removal fan vibration monitoring devices, the improved dust removal fan vibration monitoring devices through increasing the volume of vibration sensor, make the stress area of sensor and fan bearing increase, reduce the impact of fan vibration to sensor, and add high temperature resistant alloy rubber pad between vibration sensor and magnetic base, change the magnetic base into square magnetic base, and add magnetic attraction stick on the bottom of square magnetic base, can avoid the magnetic base together with vibration sensor falling off in the operation process, change the circuit structure simultaneously, change the original integral circuit, amplifier circuit into amplifier filter circuit, add power conditioning and current output power supply circuit, vibration signal after sensor sampling is linearized, normalizes through the transmitter, directly outputs 4~20mADC signal and constitutes high accuracy vibration measuring device, improves detection accuracy, signal processing capacity and high temperature resistance, improves anti -interference ability.

[0007] In order to realize the above-mentioned purpose, the utility model discloses the following technical scheme is used: an improved dust removal fan vibration monitoring device, it includes the vibration sensor 1 for detecting fan vibration, the high temperature resistant alloy rubber pad 2 for protecting vibration sensor 1 and square magnetic base 3, the bottom of vibration sensor 1 is installed in one end of high temperature resistant alloy rubber pad 2, and the other end of high temperature resistant alloy rubber pad 2 is connected with square magnetic base 3, control chip is equipped in vibration sensor 1, and amplifier filter circuit module, power conditioning module and current output power supply circuit module are equipped on control chip, control mainboard is equipped in vibration sensor 1, and control mainboard includes power conditioning circuit, amplifier filter circuit and output power supply circuit, the output end of power conditioning circuit is connected with the input end of amplifier filter circuit, and the input end of output power supply circuit is connected with the output end of amplifier filter circuit.

[0008] Further, the vibration sensor 1 includes a sensor body 13, a transmitting output interface 11 is installed on the top of the sensor body 13, a threaded cap 12 is arranged on the edge of the top of the sensor body 13, and a sensor threaded hole 14 is arranged in the middle of the bottom end of the sensor body 13.

[0009] Further, the high temperature resistant alloy rubber pad 2 includes a rubber pad body 23, a sensor placing groove 21 is formed in the top of the rubber pad body 23, a sensor threaded column 22 is installed in the middle of the sensor placing groove 21, a magnetic base threaded hole 25 is arranged in the middle of the bottom end of the rubber pad body 23, and rotating grooves 24 are arranged on both sides of the rubber pad body 23.

[0010] Further, the square magnetic base 3 includes a magnetic base body 32, magnetic attraction stick 33 is installed on both sides of the bottom of the magnetic base body 32, a magnetic base groove 34 is arranged in the magnetic base body 32 along the installation direction of the magnetic attraction stick 33, and a magnetic base threaded column 31 is installed in the middle of the top end of the magnetic base body 32.

[0011] Further, the diameter of the vibration sensor 1 is 50mm, and the height of the vibration sensor 1 is 85mm.

[0012] Further, the length and width of the square magnetic base 3 are both 70mm, and the height of the square magnetic base 3 is 22mm.

[0013] Further, the power conditioning circuit comprises a voltage division module, an impedance matching module, a compensation and zeroing module, and the power conditioning circuit adopts an ICL7660ESA chip: the voltage division module reduces a high voltage signal to a level suitable for subsequent circuit processing; the impedance matching module adjusts the input impedance of the circuit to match the output impedance of the signal source, reducing signal reflection and loss; the compensation and zeroing module adjusts the offset of the signal through a compensation circuit to ensure the accuracy of measurement; the system error is eliminated through a zeroing circuit; and the power conditioning circuit ensures that the collected signals are accurate and reliable during data collection.

[0014] Further, the amplification and filtering circuit comprises an amplification circuit and a filtering circuit, the filtering circuit removes unnecessary frequency parts through a capacitor, and the amplification circuit amplifies the weak electric signal through a triode and then outputs the signal to the power supply output circuit; the amplification and filtering circuit adopts an AD736 chip.

[0015] After the above technical scheme is adopted, the improved dust removal fan vibration monitoring device has the following advantages:

[0016] 1. The volume of the vibration sensor is increased, the diameter and height of the sensor are uniformly increased, the stress area of the sensor and the fan bearing is increased, and the impact force of the fan vibration on the sensor is reduced;

[0017] 2. A high-temperature-resistant alloy rubber pad is additionally arranged between the vibration sensor and the magnetic base, the high-temperature-resistant alloy rubber pad can improve the high-temperature-resistant performance of the vibration sensor, better protect the vibration sensor, increase the distance between the vibration sensor and the dust removal fan bearing, avoid direct detection in the high-temperature area, and avoid the vibration sensor being burned out due to being too close to the bearing;

[0018] 3. The magnetic base is changed into a square magnetic base, and a magnetic attraction bar is additionally arranged at the bottom of the square magnetic base, so that the magnetic base and the vibration sensor are prevented from falling off during operation;

[0019] 4. The circuit structure is changed, the original integration circuit and amplification circuit are changed into an amplification and filtering circuit, and a power conditioning and current output power supply circuit is additionally arranged, so that the vibration signal sampled by the sensor is linearized and normalized through a transmitter, and then a 4-20mADC signal is directly output to form a high-precision vibration measurement device, the detection precision, signal processing capacity and high-temperature-resistant performance are improved, and the anti-interference ability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] Figure 1 is a structural schematic diagram of the present application.

[0022] Figure 2 is a structural schematic diagram of the vibration measuring sensor in the present application.

[0023] Figure 3 is a structural schematic diagram of the high-temperature-resistant alloy rubber pad in the present application.

[0024] Figure 4 is Figure 3 is a sectional view structure schematic diagram of A-A in the present application.

[0025] Figure 5 is a structural schematic diagram of the square magnetic base in the present application.

[0026] Figure 6 is a bottom structure schematic diagram of the square magnetic base in the present application.

[0027] Figure 7 is a structural schematic diagram of the present Figure 5 is a corresponding right view structure schematic diagram.

[0028] Figure 8 is an amplification filter circuit diagram and an output power supply circuit in the present application.

[0029] Figure 9 is a power supply conditioning circuit in the present application.

[0030] Mark explanation: vibration measuring sensor 1, high-temperature-resistant alloy rubber pad 2, square magnetic base 3, transmitting output interface 11, threaded cap 12, sensor main body 13, sensor threaded hole 14, sensor placing groove 21, sensor threaded column 22, rubber pad main body 23, rotating groove 24, magnetic base threaded hole 25, magnetic base threaded column 31, magnetic base main body 32, magnetic attraction bar 33, magnetic base groove 34. DETAILED DESCRIPTION

[0031] Referring to Figures 1-7The technical scheme adopted in the embodiment is shown as follows: it comprises a vibration sensor 1 for detecting vibration of a fan, a high-temperature-resistant alloy rubber pad 2 for protecting the vibration sensor 1, and a square magnetic base 3, the bottom of the vibration sensor 1 is mounted at one end of the high-temperature-resistant alloy rubber pad 2, the other end of the high-temperature-resistant alloy rubber pad 2 is connected with the square magnetic base 3, the vibration sensor 1 is provided with a control chip, the control chip is provided with an amplification filter circuit module, a power supply conditioning module and a current output power supply circuit module, the vibration sensor 1 is provided with a control mainboard, the control mainboard comprises a power supply conditioning circuit, an amplification filter circuit and an output power supply circuit, the output end of the power supply conditioning circuit is connected with the input end of the amplification filter circuit, and the output end of the amplification filter circuit is connected with the input end of the output power supply circuit.

[0032] More specifically, the vibration sensor 1 comprises a sensor main body 13, a variable output interface 11 is mounted at the top of the sensor main body 13, a threaded cap 12 is arranged at the edge of the top of the sensor main body 13, and a sensor threaded hole 14 is formed in the middle of the bottom end of the sensor main body 13. The variable output interface 11 is used for outputting a 4-20mADC variable signal, the threaded cap 12 is convenient for mounting the sensor main body 13 on the high-temperature-resistant alloy rubber pad 2, and the sensor threaded hole 14 is used for connecting the high-temperature-resistant alloy rubber pad 2.

[0033] More specifically, the high-temperature-resistant alloy rubber pad 2 comprises a rubber pad main body 23, a sensor placing groove 21 is formed in the top of the rubber pad main body 23, a sensor threaded column 22 is mounted in the middle of the sensor placing groove 21, a magnetic base threaded hole 25 is formed in the middle of the bottom end of the rubber pad main body 23, and rotating grooves 24 are arranged at the two sides of the rubber pad main body 23. The sensor placing groove 21 is convenient for placing and mounting the vibration sensor 1, the sensor threaded column 22 is used for connecting the vibration sensor 1 and the high-temperature-resistant alloy rubber pad 2 through the sensor threaded hole 14, and the rotating grooves 24 are convenient for rotating the high-temperature-resistant alloy rubber pad 2, and the high-temperature-resistant alloy rubber pad 2 is mounted on the square magnetic base 3 through the magnetic base threaded hole 25.

[0034] More specifically, the square magnetic base 3 comprises a magnetic base main body 32, magnetic attraction bars 33 are mounted at the two sides of the bottom of the magnetic base main body 32, a magnetic base groove 34 is formed in the magnetic base main body 32 along the mounting direction of the magnetic attraction bars 33, and a magnetic base threaded column 31 is mounted in the middle of the top end of the magnetic base main body 32. When mounted, the two magnetic attraction bars 33 are parallel to the bearing center line, so that the firmness is ensured, and the waterproof and oil-proof effects are achieved, and the magnetic base groove 34 can make the square magnetic base 3 more fit the bearing, wherein the magnetic base threaded column 31 is used for cooperating with the magnetic base threaded hole 25.

[0035] More specifically, the diameter of the vibration sensor 1 is 50mm, and the height of the vibration sensor 1 is 85mm.

[0036] More specifically, the length and width of the square magnetic base 3 are both 70mm, and the height of the square magnetic base 3 is 22mm.

[0037] Referring to Figure 9 As shown more specifically, the power conditioning circuit includes a voltage division module, an impedance matching module, a compensation and zeroing module, and the power conditioning circuit uses an ICL7660ESA chip.

[0038] The voltage division module reduces the high voltage signal to a level suitable for subsequent circuit processing;

[0039] The impedance matching module adjusts the input impedance of the circuit to match the output impedance of the signal source, reducing signal reflection and loss;

[0040] The compensation and zeroing module adjusts the signal offset through the compensation circuit to ensure the accuracy of the measurement, and eliminates system error through the zeroing circuit;

[0041] During data acquisition, the power conditioning circuit ensures that the acquired signal is accurate and reliable.

[0042] Referring to Figure 8 As shown more specifically, the amplification and filtering circuit includes an amplification circuit and a filtering circuit. The filtering circuit removes unwanted frequency components through a capacitor, and the amplification circuit amplifies the weak electrical signal through a transistor and then outputs it to the power supply output circuit. The amplification and filtering circuit uses an AD736 chip.

[0043] The utility model discloses a working principle: through increasing the volume of vibration measuring sensor 1, the diameter and height of sensor are unified to increase, namely diameter changes to phi 50mm, height changes to 85mm, make vibration measuring sensor 1 with the stress area of fan bearing increase, reduce the impact of fan vibration to vibration measuring sensor 1, and high-temperature alloy rubber pad 2 is additionally arranged between vibration measuring sensor 1 and square magnetic base 3, and high-temperature alloy rubber pad 2 can improve the high-temperature resistance, by additionally arranging high-temperature alloy rubber pad 2, vibration measuring sensor 1 is protected by buffering and increasing the weight and volume of vibration measuring sensor 1, avoids the damage of falling due to fan vibration, reaches the purpose that the interval distance between vibration measuring sensor 1 and dust fan bearing is increased, avoids the direct detection of high-temperature area, also avoids vibration measuring sensor 1 and bearing too close and be burnt, and the magnetic base changes into square magnetic base 3, installs square magnetic base 3, and the bottom surface magnetic attraction stick strip 33 of square magnetic base 3 is parallelly installed with bearing center line, and square magnetic base 3 changes into square long 70mm wide 70mm high 22mm and the superstrong magnetic base that bearing contact operation process is closely bonded, can effectively avoid the magnetic base together with vibration measuring sensor falling in the operation process, and the circuit structure of internal control mainboard is changed, the original integral circuit, amplification circuit changes into amplification filter circuit, and power conditioning circuit and output power supply circuit are additionally arranged, vibration signal is handled after linearization, normalization of sensor sampling through the transmitter, directly outputs 4-20mADC signal and constitutes high-precision vibration measuring device, improves detection accuracy, signal processing capacity and high-temperature resistance, improves anti-interference ability, wherein, power conditioning circuit uses ICL7660ESA chip, amplification filter circuit uses AD736 chip, and output power supply circuit uses XTR119U chip, since the electric signal is handled through power conditioning circuit first, then removes ripple interference and amplifies output through amplification filter circuit, thereby effectively avoids external signal interference, can detect more correct data, and the circuit diagram can refer to Figures 8-9 As shown in the figure.

[0044] The above, only to illustrate the technical scheme of the utility model but not limit, the other modification or equivalent replacement of the technical scheme of the utility model of the ordinary skill in the art to the utility model, as long as not departing from the spirit and scope of the technical scheme of the utility model, should be covered in the claim range of the utility model.

Claims

1. An improved dust extractor fan vibration monitoring device, characterised in that: It includes vibration sensor (1) for detecting fan vibration, high temperature resistant alloy rubber pad (2) for protecting vibration sensor (1) and square magnetic base (3), the bottom of vibration sensor (1) is installed in one end of high temperature resistant alloy rubber pad (2), the other end of high temperature resistant alloy rubber pad (2) is connected with square magnetic base (3), control chip is provided in vibration sensor (1), amplification filter circuit module, power supply conditioning module and current output power supply circuit module are provided on control chip, control mainboard is provided in vibration sensor (1), control mainboard includes power supply conditioning circuit, amplification filter circuit and output power supply circuit, power supply conditioning circuit output end is connected with amplification filter circuit input end, amplification filter circuit output end is connected with output power supply circuit input end.

2. An improved dusting fan vibration monitoring device as claimed in claim 1, wherein: The vibration sensor (1) includes a sensor body (13), a transmitting output interface (11) is installed on the top of the sensor body (13), and a threaded cap (12) is arranged on the edge of the top of the sensor body (13), and a sensor threaded hole (14) is formed in the middle of the bottom of the sensor body (13).

3. The improved dusting fan vibration monitoring device of claim 1, wherein: The high temperature resistant alloy rubber pad (2) includes a rubber pad body (23), a sensor placing groove (21) is formed in the top of the rubber pad body (23), a sensor threaded column (22) is installed in the middle of the sensor placing groove (21), and a magnetic base threaded hole (25) is formed in the middle of the bottom of the rubber pad body (23), and rotating grooves (24) are arranged on the two sides of the rubber pad body (23).

4. The improved dusting fan vibration monitoring device of claim 1, wherein: The square magnetic base (3) includes a magnetic base body (32), magnetic attraction bars (33) are installed on the two sides of the bottom of the magnetic base body (32), and a magnetic base groove (34) is formed in the magnetic base body (32) along the installation direction of the magnetic attraction bars (33), and a magnetic base threaded column (31) is installed in the middle of the top of the magnetic base body (32).

5. The improved dusting fan vibration monitoring device of claim 1, wherein: The diameter of the vibration sensor (1) is 50mm, and the height of the vibration sensor (1) is 85mm.

6. An improved dusting fan vibration monitoring device as claimed in claim 1, wherein: The length and width of the square magnetic base (3) are both 70mm, and the height of the square magnetic base (3) is 22mm.

7. An improved dusting fan vibration monitoring device as claimed in claim 1, wherein: During the data acquisition process, the power conditioning circuit ensures that the collected signals are accurate and error-free, and the power conditioning circuit includes a voltage division module, an impedance matching module, a compensation and zero adjustment module, and an ICL7660ESA chip is used in the power conditioning circuit: The voltage division module reduces the high voltage signal to a level suitable for subsequent circuit processing; The impedance matching module adjusts the input impedance of the circuit to match the output impedance of the signal source, reducing signal reflection and loss; The compensation and zero adjustment module adjusts the offset of the signal through the compensation circuit to ensure the accuracy of the measurement, and eliminates system errors through the zero adjustment circuit.

8. An improved dusting fan vibration monitoring device as claimed in claim 1, wherein: The amplification filter circuit includes an amplification circuit and a filter circuit, the filter circuit removes unwanted frequency parts through a capacitor, and the amplification circuit amplifies the weak electrical signal through a triode and then outputs it to the power supply output circuit; the amplification filter circuit uses an AD736 chip.

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