A fan with vibration monitoring function

Abstract

A fan with vibration monitoring function belongs to fan technical field, including fan body, power module, vibration sensor, still have detection circuit control circuit, power module, vibration sensor, single-chip microcomputer module, GPRS module, detection circuit control circuit install in the shell outside the upper end of fan body, the power output end of control circuit and the motor power input end of fan body are electrically connected, vibration sensor and the power input end of detection circuit are electrically connected, the signal output end of detection circuit and the signal input end of control circuit are electrically connected, the new application in the joint action of relevant mechanism, can through vibration sensor real-time monitoring the vibration situation of fan body, when the vibration amplitude of fan body is too large and exceeds a certain time because of various reasons, can close the power of fan body, and alarm prompt staff to overhaul, ensure that the equipment can work stably and reliably.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine with vibration monitoring function. Background Technology

[0002] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas. It is a type of driven fluid machinery. Commonly referred to as a fan, it includes ventilator, blower, and wind turbine. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal, and cooling; in boilers and industrial furnaces for ventilation and induced draft; in air conditioning equipment and household appliances for cooling and ventilation; in grain drying and conveying; as a wind source for wind tunnels; and in inflating and propelling hovercraft.

[0003] The magnitude of vibration during wind turbine operation is a crucial indicator. Smooth operation is essential for its efficiency and lifespan; excessive vibration can lead to equipment failure, production downtime, and increased maintenance costs. The main causes of excessive wind turbine vibration include rotor imbalance, bearing failure, misalignment between the rotor shaft and drive shaft (the shaft that drives the fan blades, usually integrated with the motor shaft), unstable installation, misalignment of multiple blades, and blade detachment, among others. With the development of industrial technology, the functions of fans are becoming increasingly sophisticated. For example, the authorized patent with patent application number "202420359206.2" and patent title "Fan Impeller and Centrifugal Fan" states that "in the embodiments of this utility model, the fan impeller's shaft disk adopts a tubular shaft structure instead of a traditional conical shaft disk. The tubular shaft structure can be directly made from round steel by machining or forged from a tubular blank. Furthermore, a shroud is provided, which serves as the conical outer contour of a traditional conical shaft disk to achieve the purpose of rectification. The space between the shroud and the shaft disk can be a cavity, rather than the solid structure of a traditional conical shaft disk, thus allowing for a lighter weight. In addition, the shaft disk and the impeller disk, as well as the shroud and the shaft disk and impeller disk, are all assembled by welding, resulting in better overall assembly reliability." As can be seen above, although the comparative patent solves the existing technical problems it raises, it still has the problem of not being able to monitor the vibration amplitude of the fan body in real time due to structural and functional limitations. Thus, when the fan vibrates too much for various reasons and no on-site personnel discover and troubleshoot the fault in time (such as blades falling off, causing the fan body to be unable to dissipate heat to the relevant area, or the relevant production equipment being damaged due to excessive temperature rise), it will have an adverse impact on normal production. Utility Model Content

[0004] To overcome the shortcomings of existing fans, which lack vibration monitoring due to structural limitations, this invention provides a fan with vibration monitoring capabilities. Based on the fan body itself, and with the combined action of relevant mechanisms, it can monitor the vibration of the fan body in real time. When the fan body vibrates excessively due to various reasons, it can trigger an alarm to prompt maintenance, thus ensuring the stable and reliable operation of the equipment as much as possible.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A fan with vibration monitoring function includes a fan body, a power module, a vibration sensor, and a detection circuit and control circuit. The power module, vibration sensor, detection circuit, and control circuit are installed inside a housing on the upper part of the fan body. The detection circuit includes an electrically connected resistor, a relay, and a transistor. One end of the first resistor, one end of the second resistor, and one end of the third resistor are connected. The other end of the third resistor is connected to the base of the transistor. The other end of the second resistor is connected to the emitter of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay. The positive power input terminal of the relay and the control power input terminal of the relay are connected. The power output terminal of the control circuit is electrically connected to the motor power input terminal of the fan body. The vibration sensor is electrically connected to the power input terminal of the detection circuit, and the signal output terminal of the detection circuit is electrically connected to the signal input terminal of the control circuit.

[0007] Furthermore, the vibration sensor is vertically fixed inside the housing.

[0008] Furthermore, the control circuit includes an electrically connected resistor and capacitor, and a thyristor. One end of the first resistor is connected to the positive terminal of the capacitor, one end of the second resistor is connected to the control electrode of the thyristor, the cathode of the thyristor is connected to the positive power input terminal of the relay, and the negative terminal of the capacitor is connected to the negative power input terminal of the relay.

[0009] Furthermore, the control circuit is also equipped with an alarm, with the power input terminals of the alarm connected to the cathode of the thyristor and the negative terminal of the capacitor, respectively.

[0010] Compared with existing technologies, the advantages of this utility model are as follows: Based on the fan body, this utility model, under the combined action of related mechanisms, can monitor the vibration of the fan body in real time via vibration sensors. When the fan body vibrates excessively for a certain period of time due to various reasons, the power supply to the fan body can be shut off, and an alarm can be triggered to prompt personnel for maintenance, thus ensuring the stable and reliable operation of the equipment as much as possible. In summary, this utility model has good application prospects. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is the circuit diagram of this utility model. Detailed Implementation

[0014] Figure 1 , 2 As shown, a fan with vibration monitoring function includes a fan body M, a power module T1, a vibration sensor T2, and a detection circuit 1 and a control circuit 2; the power module T1, the vibration sensor T2, the detection circuit 1, and the control circuit 2 are installed in the housing 3 outside the upper end of the fan body.

[0015] Figure 1 , 2 As shown, the vibration sensor T2 is vertically fixed inside the housing 3, with its detection surface contacting the lower end of the housing 3. The detection circuit includes resistors R1, R2, and R3, a relay JK, and a transistor Q1 connected via circuit board wiring. One end of the first resistor R1 is connected to one end of the second resistor R2 and one end of the third resistor R3. The other end of the third resistor R3 is connected to the base of the transistor Q1. The other end of the second resistor R2 is connected to the emitter of the transistor Q1. The collector of the transistor Q1 is connected to the negative power input terminal of the relay JK. The positive power input terminal of the relay JK is connected to the control power input terminal. The control circuit includes resistors R4 and R5, a capacitor C1, and a silicon controlled rectifier (SCR) VS connected via circuit board wiring. One end of the first resistor R4 is connected to the positive terminal of the capacitor C1, and one end of the second resistor R5 is connected to the control terminal of the SCR VS. The cathode of the SCR VS is connected to the positive power input terminal of the relay JK1. The negative terminal of the capacitor C1 is connected to the negative power input terminal of the relay JK1. The control circuit is also equipped with an alarm BX. The two ends of the power input of the alarm BX are connected to the cathode of the thyristor VS and the negative terminal of the capacitor C1, respectively.

[0016] Figure 1 , 2As shown, the power input terminals 1 and 2 of the power module T1, the control power input terminal of the relay JK1 in the control circuit, and the two poles of the 220V AC power supply are connected by wires (a 380V power supply can also be connected). The power output terminals 3 and 4 of the power module T1, the power input terminals 1 and 2 of the vibration sensor T2, the power input terminal of the detection circuit, the positive power input terminal of the relay JK1, the emitter of the transistor Q1, the power input terminal of the control circuit, the anode of the thyristor VS, and the negative power input terminal of the relay JK1 are connected by wires. The two normally closed contacts of the power output terminal of the relay JK1 in the control circuit are connected by wires to the motor power input terminal of the fan body M. The signal output terminal 3 of the vibration sensor T2 is connected to the other end of the resistor R1 at the signal input terminal of the detection circuit by wires. The other end of the resistor R4 at the signal input terminal of the control circuit is connected to the normally open contact of the relay JK by wires. Figure 2 In this configuration, power module T1 is a finished product of AC 220V to DC 24V power module; resistors R1, R2, R3, R4, and R5 have resistance values ​​of 43K, 7K, 4.7K, 5.45M, and 400K respectively; the thyristor VS is model MCR100-1; relays JK and JK1 are model DC24V; capacitor C1 is a 10μF / 25V electrolytic capacitor; transistor Q1 is model 8050 (NPN transistor); vibration sensor T2 is a finished product of vibration sensor model CYQ-9250 (operating voltage DC 24V), which has two power input terminals and one signal output terminal. The greater the vibration signal, the higher the voltage signal output at the signal output terminal, and vice versa; alarm BX is a finished product of active continuous audible alarm model MF24V.

[0017] Figure 1 , 2As shown, the working principle of the new type of fan body M is exactly the same as that of existing fans. Its motor drives the fan blades to rotate, providing flowing air to the relevant production area. The above-mentioned fan body is a mature existing technology, and this application will not elaborate on the structure and working principle of the fan body. After the 220V AC power supply enters the power input terminal of the power module T1, the power module T1 outputs a stable DC 24V power supply through pins 3 and 4, which enters the power input terminal of the vibration sensor T2 and the detection circuit and control circuit. After the vibration sensor T2 is powered on, its pin 3 will output a dynamically changing voltage signal between 0-5V to the other end of the resistor R1. When the fan body M is working, the greater the vibration amplitude, the higher the voltage signal output by the vibration sensor T2, and vice versa. When the vibration amplitude of the fan body M is relatively small, the voltage signal output from pin 3 of the vibration sensor T2 is divided by resistors R1 and R2, and the voltage is reduced and the current is limited by resistor R3. When the voltage is lower than 0.7V at the base of transistor Q1, transistor Q1 will not conduct, and relay JK1 will not be energized. The 220V power supply continues to enter the power input terminal of the fan body M through the control power input terminal and normally closed contact terminal of relay JK1, and the fan body M continues to be energized and work. When the vibration amplitude of the fan body M is relatively large, the voltage signal output from pin 3 of the vibration sensor T2 is divided by resistors R1 and R2, and the voltage is reduced and the current is limited by resistor R3. The voltage is higher than 0.7V at the base of transistor Q1, so transistor Q1 will conduct and output a low level at the collector, which enters the negative power input terminal of relay JK. Relay JK is energized and its control power input terminal and normally open contact terminal are closed. The 24V power supply is charged by capacitor C1 through the control power input terminal and normally open contact terminal of relay JK and the voltage is reduced and the current is limited by resistor R4. In the initial period (for example, less than 60 seconds), when capacitor C1 is not fully charged, the voltage of the 24V power supply entering the control terminal of SCR VS through resistors R4 and R5 is lower than 0.7V. SCR VS will not conduct, and relay JK1 will not be energized. After charging for a period of time (e.g., more than 60 seconds), when capacitor C1 is fully charged, the voltage of the 24V power supply entering the control electrode of the thyristor VS through resistors R3 and R4 is higher than 0.7V. The thyristor VS is triggered and conducts, energizing relay JK1 and opening its control power input terminal and normally closed contact. Thus, the fan body M is no longer powered. Simultaneously with the conduction of thyristor VS, alarm BX is energized and sounds to alert nearby personnel that the fan body M has stopped working due to excessive vibration. Through the above, in this new application, with the combined action of relevant mechanisms, the vibration sensor can monitor the vibration of the fan body in real time. When the fan body vibrates excessively for a certain period of time due to various reasons, the power supply to the fan body can be shut off, and an alarm can be triggered to prompt personnel for maintenance, ensuring the stable and reliable operation of the equipment as much as possible.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0019] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fan with vibration monitoring function, comprising a fan body, a power module, and a vibration sensor, characterized in that, It also includes a detection circuit and a control circuit; the power module, vibration sensor, detection circuit, and control circuit are installed inside the housing outside the upper part of the fan body; the detection circuit includes an electrically connected resistor, relay, and transistor, with one end of the first resistor connected to one end of the second resistor and one end of the third resistor, the other end of the third resistor connected to the base of the transistor, the other end of the second resistor connected to the emitter of the transistor, the collector of the transistor connected to the negative power input terminal of the relay, and the positive power input terminal of the relay connected to the control power input terminal of the relay; the power output terminal of the control circuit is electrically connected to the motor power input terminal of the fan body; the vibration sensor is electrically connected to the power input terminal of the detection circuit, and the signal output terminal of the detection circuit is electrically connected to the signal input terminal of the control circuit.

2. A fan with vibration monitoring function according to claim 1, characterized in that, The vibration sensor is vertically fixed inside the housing.

3. A fan with vibration monitoring function according to claim 1, characterized in that, The control circuit includes electrically connected resistors and capacitors, and a thyristor. One end of the first resistor is connected to the positive terminal of the capacitor, one end of the second resistor is connected to the control electrode of the thyristor, the cathode of the thyristor is connected to the positive power input terminal of the relay, and the negative terminal of the capacitor is connected to the negative power input terminal of the relay.

4. A fan with vibration monitoring function according to claim 3, characterized in that, The control circuit is also equipped with an alarm, with the power input terminals of the alarm connected to the cathode of the thyristor and the negative terminal of the capacitor, respectively.

Images