KR20110006370A - Agitator that can do remote and disorder diagnosis - Google Patents

Abstract

PURPOSE: An agitator is provided to improve the reliability of an agitator by enabling an expert to monitor the state of an agitator and controlling it. CONSTITUTION: An agitator includes a control panel, an impeller axis(31), an impeller(33), an impeller diagnosis sensor, an impeller indirect diagnosis sensor, a reducer diagnosis sensor, and a communications interface part. The control panel comprises an input unit and an alarm generating part. The impeller axis revolves with a drive motor(21) and a reducer(22) controlled by the control panel. The impeller is combined with the end of the impeller axis by a hub(32). The impeller diagnosis sensor directly detects the state of the impeller and the hub. The impeller indirect diagnosis sensor detects indirectly detects the state of the impeller. The reducer diagnosis sensor indirectly detects the state of the reducer. The communications interface part transmits the detection result of the impeller diagnosis sensor, the reducer diagnosis sensor, and the impeller indirect diagnosis to a remote computer.

Description

Agitator that can do remote and disorder diagnosis

The present invention relates to a stirrer having a remote diagnosis and fault diagnosis function, and more particularly to enable the field and remote experts to check the stirrer abnormality, the remote can easily diagnose the damage of the reducer, hub and impeller The present invention relates to an agitator having a diagnosis and diagnosis function.

In general, a stirrer is mainly used for mixing or stirring fine particles, liquids, etc., and at least one impeller whose structure is a portion of the stirrer wing which directly performs the agitation is provided at the end of the impeller shaft, and the impeller and the shaft are driven by rotation. In order to make the reduction gear and the driving motor are each provided, a control panel for controlling the power supply and rotation speed, direction, etc. are provided to the drive motor.

Thus, the stirrer having such a configuration has many difficulties in performing the stirring because there are many cases of failure of the constituents due to other reasons during its operation, as well as a small amount of damage that is not found early in the failure. As an example, the agitator of the agitator tank installed in the water treatment plant such as sewage, purified water, and waste water will be described. The agitator can perform a smooth water treatment process by being continuously rotated for a long time for water treatment. Suffers a lot of trouble. That is, when the stirrer rotates due to turbid flow, problems such as rotation of the stirrer blade, that is, impeller breaks or bends occur, and there is no other device that can confirm such abnormality at an early stage, and as a result of overload of the reducer and the driving motor. Only after it was expanded to that extent did they realize that more than that had been incurred, so that enormous time and economic losses were inevitable.

Therefore, in order to detect such an abnormality of the agitator early and to quickly act, the present applicant, as in the Republic of Korea Patent Publication No. 10-2002-0023658, the applicant of the stirrer through the rotation speed measurement of the stirrer, the temperature measurement of the motor and the vibration detection of the reducer A system for diagnosing abnormalities has been developed.

However, there has been found a need for improvement in the application of the technology filed and published by the present application, the improvement is required as follows.

First, due to the lack of knowledge and inexperienced operation of the operator's stirrer in the field, a situation in which the operation is continued even though the stirrer has already been broken.

In addition, it is possible to confirm that abnormal vibration of the rotating shaft occurs by mismatching of the stirrer before or after the impeller breakage occurs. However, the conventional apparatus does not detect such abnormal vibration in advance, leading to damage of the impeller. In order to prevent such a phenomenon, it is necessary to apply a system that can measure the vibration of the entire structure and the rotating shaft of the stirrer.

In addition, a pulsation sensor was used as a device for determining whether an impeller is damaged in the abnormality measurement device. In the case of the pulsation sensor, the disadvantage of increasing the unit cost of the stirring system as an expensive equipment and the flow of fluid in the agitation tank The accuracy of judging impeller damage due to various pulsations caused by the pulsator is less accurate. Even in agitators equipped with an abnormal diagnosis self-control system, it is often impossible to clearly diagnose an abnormality of the agitator. .

In the existing apparatus, only vibration was measured to determine the abnormality of the reducer. However, it is difficult to determine the abnormality of the reducer by measuring only the vibration by various vibrations appearing in the whole stirrer. Therefore, it is necessary to secure it by measuring other physical quantities. have.

The problem to be solved by the present invention in view of the above problems, to provide a stirrer having a remote diagnosis and impeller diagnostic function to make it possible to easily check the status of the current stirrer, and control the stirrer as well as remote sites experts have.

In addition, another problem to be solved by the present invention is to provide a means for measuring the vibration of the stirrer structure, and an enhanced means for measuring the abnormality of the reducer in order to enhance the abnormal diagnosis occurring in the stirrer, The present invention provides a stirrer having a remote diagnosis and an abnormal diagnosis function to provide a means for directly inspecting and to enable a direct and accurate diagnosis of the condition of the impeller.

The present invention for solving the above problems, a control panel including an input unit and an alarm generating unit, an impeller shaft rotated by a drive motor and a reducer controlled by the control panel, and an impeller coupled by a hub at the end of the impeller shaft In the stirrer provided, an impeller diagnostic sensor for directly detecting the state of the impeller and the hub, an impeller indirect diagnostic sensor for indirectly detecting the state of the impeller, a reducer diagnostic sensor for indirectly detecting the state of the reducer, and the impeller The detection results of the diagnostic sensor, the impeller indirect diagnosis sensor and the reducer diagnosis sensor are transmitted to the remote computer, and the control data of the remote computer is transmitted to the control panel so that the control data of the remote computer is processed in preference to the input of the input unit. The communication interface unit further comprises.

The stirrer having the remote diagnosis and abnormality diagnosis function of the present invention includes a remote communication unit so that an expert can remotely check the state of the stirrer in real time and perform control according to the result, thereby improving reliability of the state check of the stirrer. There is an effect that can be improved.

In addition, the stirrer having the remote diagnosis and fault diagnosis function of the present invention has a means for directly confirming the deformation or damage of the hub that rotates the reducer, the impeller, and the impeller, and directly checks the deformation and damage of the reducer, the impeller, and the hub by direct means. And the reliability of the diagnosis can be improved.

In addition, the means for diagnosing the deformation or damage of the gearhead, the impeller and the hub is not used for the conventional pulsation sensor, but the signal line having damage and the constant resistance of the gearhead through the application of the gearhead temperature sensor is used to change the resistance. By checking the deformation and damage of the impeller accordingly, there is an effect that can simplify the device and reduce the cost.

Hereinafter, the configuration and operation of the preferred embodiment of the stirrer having the present invention remote diagnosis and abnormal diagnosis function will be described in more detail.

1 is a cross-sectional view of a stirrer having a remote diagnosis and fault diagnosis function of the present invention, Figure 2 is a block diagram of the present invention including a remote computer capable of diagnosing the stirrer remotely in accordance with the present invention.

1 and 2, respectively, the stirrer having the present invention remote diagnosis and fault diagnosis function, the stirring main body 10 having a supply port 11 and the outlet 12 of the stirring object, and the stirring main body 10 Drive motor 21 for generating a rotational force on the upper side of the motor, a reducer 22 for reducing the rotational force of the drive motor 21, a pedestal 23 for supporting the reducer, and the reducer 22 Is connected to the impeller shaft 31 is inserted into the stirring body 10 to a predetermined depth, the rotation sensor 43 for detecting the rotational speed of the impeller shaft 31, and the end of the impeller shaft 31 An impeller 33 coupled to the hub 32, an impeller diagnostic sensor 80 positioned inside the hub 32 and the impeller 33 to detect abnormalities of the hub 32 and the impeller 33; Acceleration sensor 45, attached to the side end of the impeller shaft 31 to detect the vibration of the impeller shaft 31, the stirring main body 10 A temperature sensor 41 for measuring the temperature of the stirring object in the body, a speed reducer temperature sensor 44 for measuring the temperature of the reducer 22, an acceleration sensor 45 for measuring vibration of the impeller shaft 31, and The detection result and input unit 57 of the water level sensor 42, the water level sensor 42, the temperature sensor 41, the speed reducer temperature sensor 44 and the impeller diagnostic sensor 80 to measure the water level of the stirring object. Controls the driving of the drive motor 21 by the setting input through the control signal received from the remote computer 70 or, through the alarm generating unit 58 to display the location where the abnormality occurs and to generate an alarm It includes a control panel 50 and a communication interface 60 to enable communication between the control panel 50 and the remote computer 70.

Hereinafter, the configuration and operation of the agitator having a remote diagnosis and impeller diagnostic function according to the present invention configured as described above in more detail.

First, the field worker sets the operation of the stirrer through the input unit (57). The input switch provided by the input unit 57 provides a switch for switching remote / site control, an automatic / manual switching switch, a field starting switching switch, a rotation speed setting, and the like.

Such an input is input through the digital input unit 51 of the control panel 50, and is processed by the operation control unit 53, and the processing result is an analog signal through the D / A (digital / analog) conversion output unit 55. Is converted to control the driving motor 21. Since it is natural to use an inverter or the like to control the drive motor 21, it will be omitted.

By the control operation of the control panel 50 as described above, the drive motor 21 rotates at a rotational speed corresponding to the control, which is decelerated through the reducer 22 to the impeller shaft 31 and the hub 32. By rotating the impeller 33 coupled to the end of the impeller shaft 31 by stirring the stirring object supplied through the supply port 11 to the stirring main body 10.

In this operating state, the water level sensor 42 and the temperature sensor 41 measure the level and temperature of the stirring object, respectively, and indirectly measure the operating state of the agitator, and the rotation sensor 43 rotates the impeller shaft 31. Detect the number. In addition, the reducer temperature sensor 44 is a reducer diagnostic sensor that measures the temperature of the reducer indirectly to measure the operation state of the reducer, and the acceleration sensor 45, which is an impeller indirect diagnosis sensor that indirectly diagnoses the impeller, is a vibration state of the impeller shaft. Detect. The measurement result at this time is converted into a digital signal through an A / D (analog / digital) conversion input unit 54 of the control panel 50 as an analog signal and input to the arithmetic control unit 53.

In addition, the impeller 33 and the hub 32 is provided with an impeller diagnostic sensor 80 that can directly detect the abnormality of the impeller 33 and the hub 32, the detection of the impeller diagnostic sensor 80 The result is a digital signal which is input to the operation control unit 53 through the digital input unit 51.

Such an impeller diagnostic sensor 80 is capable of detecting breakage, warpage, etc. of the impeller 33 and the hub 32, the configuration and operation will be described in more detail later with a specific example.

The calculation controller 53 detects the detection results of the water level sensor 42, the temperature sensor 41, the rotation sensor 43, the speed reducer temperature sensor 44, the acceleration sensor 45, and the impeller diagnostic sensor 80 with normal values. In comparison, when an abnormality occurs, an alarm is generated through the alarm generating unit 58 so that the field worker can recognize that the abnormality occurs.

The alarm generating unit 58 may display a level mismatch, a stirring state abnormality, an overcurrent, an inverter abnormality, and the like.

Separately, the detection result of the water level sensor 42, the temperature sensor 41 and the rotation sensor 43, the speed reducer temperature sensor 44, the acceleration sensor 45 and the impeller diagnostic sensor 80 is connected to the communication port 56. Can always be transmitted to the remote computer 70. The detection result output through the communication port 56 is transmitted to the remote computer 70 through the communication interface 60, an example of the communication interface 60 is wired to the communication port 56 Transmission or reception of communication data through a wired communication port 61 to be connected, a signal conversion unit 63 for converting communication data, a display unit 62 for displaying a signal transmission state, and a communication network connected to a remote computer 70. It may include a telecommunication port (64).

The remote computer 70 provided at such a remote location by the communication can always check the operation state of the agitator, and when there is an abnormality or a sign of occurrence, an expert at the remote site changes or stops the operation setting of the agitator. Etc. can be controlled.

The control data of the remote computer 70 is transmitted to the operation control unit 53 of the control panel 10 through the communication interface unit 60, and the operation control unit 53 takes precedence over the setting of the input unit 57. It is possible by processing the control data of the remote computer 70, the operation control unit 53 can adjust or stop the rotational speed of the drive motor (51).

Apart from this, the calculation control unit 53 is configured to determine the detection result of the water level sensor 42, the temperature sensor 41, the rotation sensor 43, the speed reducer temperature sensor 44, the acceleration sensor 45, and the impeller diagnostic sensor 80. If it is determined that the abnormal state is a serious case, it is preferable that the drive motor 21 is programmed to be able to self-stop operation.

As described in detail above, the present invention can always check the state of the stirrer even at a remote location, and by allowing the expert to control the operation of the stirrer remotely according to the result of the check, a more stable operation of the stirrer is possible and accordingly It is possible to prevent shortening of the life of the stirrer.

In addition, impeller 33 and mechanically driven impeller 33 and the impeller diagnostic sensor 80 to directly detect the state of the hub 32 for fixing the impeller 33 is placed to damage the impeller 33 and the hub 32, Warping etc. can be detected easily.

In addition, the reducer 22, the impeller 33, and the hub 32 have an reducer temperature sensor 44 and an acceleration sensor 45 which indirectly detect the state of the reducer 22, the impeller 33, and the hub 32. The abnormal state of can be detected.

3 is an exemplary configuration diagram of the impeller diagnostic sensor 80.

Referring to FIG. 3, the impeller diagnostic sensor 80 applied to the present invention is a conductive wire 81 inserted into the hub 32 and the impeller 33 in a closed loop shape.

When the electric current flows through the conductive wire 81 and the bending or breakage occurs in the impeller 33 or the hub 32, the resistance value is changed, and the impeller changes the amount of current according to the change in the resistance value. The failure of the 33 or the hub 32 may be taken so as to take measures such as stopping the impeller 33 remotely or on site.

The impeller diagnostic sensor 80, which is the conductive wire, can reduce the production cost by using a simple structure, and can directly diagnose the impeller 33 and the hub 32, so that the reliability of the diagnosis is high.

4 is another embodiment of the impeller diagnostic sensor.

Referring to FIG. 4, another embodiment of the impeller diagnostic sensor includes a contact switch 83 and 84 closed by a resistance 82 and a centrifugal force, and the contact switches 83 and 84 are not shown but are closed. At which current flows through the resistor 82.

That is, when the wire is connected to one end of the resistor 82 and one end 84 of the contact switch in the drawing and the contact switches 83 and 84 are closed by the centrifugal force generated while the impeller 33 rotates, the current becomes a resistance ( 82, the contact switch (83, 84) is open when the rotation of the impeller 33 is not more than the current does not flow.

In this way, it is possible to directly check the state of the impeller 33 with or without the flow of current that changes according to the rotation state of the impeller 33.

In this way, the impeller diagnostic sensor 80 can be used to directly check the state of the impeller 33 and the hub 32 at all times, and can improve the reliability of the inspection compared to the method of indirectly checking the state of the impeller. It is possible to reduce the cost relatively.

1 is a partial cross-sectional view of a stirrer having a remote diagnosis and fault diagnosis function of the present invention.

Figure 2 is a block diagram of a stirrer having a remote diagnosis and fault diagnosis function of the present invention.

Figure 3 is an embodiment configuration of an impeller diagnostic sensor applied to a stirrer having a remote diagnosis and fault diagnosis function of the present invention.

Figure 4 is another embodiment of the impeller diagnostic sensor applied to the agitator having a remote diagnosis and fault diagnosis function of the present invention.

* Description of the symbols for the main parts of the drawings *

10: stirring main body 11: supply port

12: outlet 21: drive motor

22: Reducer 23: Stand

31: impeller shaft 32: hub

33: impeller 41: temperature sensor

42: water level sensor 43: rotation sensor

44: reducer temperature sensor 45: acceleration sensor

50: control panel 51: digital input unit

52: digital output unit 53: operation control unit

54: A / D conversion output section 55: D / A conversion output section

56: communication port 57: input unit

58: alarm generating unit 60: communication interface unit

61: wired communication port 62: display unit

63: signal conversion unit 64: remote communication port

70: remote computer

Claims (6)

In an agitator having a control panel including an input unit and an alarm generating unit, an impeller shaft rotated by a drive motor and a reducer controlled by the control panel, and an impeller coupled to a hub at an end of the impeller shaft, An impeller diagnostic sensor for directly detecting the state of the impeller and the hub; An impeller indirect diagnosis sensor for indirectly detecting a state of the impeller; A reduction gear diagnostic sensor for indirectly detecting a state of the reduction gear; And The detection results of the impeller diagnostic sensor, the impeller inter-diagnostic sensor and the reducer diagnostic sensor are transmitted to a remote computer, and the control data of the remote computer is transmitted to the control panel so that the control data of the remote computer takes precedence over the input of the input unit. Stirrer having a remote diagnosis and fault diagnosis function further comprising a communication interface to be processed. The method of claim 1, The impeller diagnostic sensor, The agitator having a remote diagnosis and abnormality diagnosis function is inserted into the hub and the impeller in the form of a closed loop, the resistance wire is changed when the hub or the impeller is broken. The method of claim 1, The impeller diagnostic sensor, Stirrer having a remote diagnosis and abnormality diagnosis function comprising a contact switch which is closed by the centrifugal force during the rotation of the impeller. The method of claim 1, The reducer diagnostic sensor, Stirrer having a remote diagnosis and abnormality diagnosis function, characterized in that the reducer temperature sensor for measuring the heat generated when the abnormality of the reducer. The method of claim 1, The impeller indirect diagnostic sensor, An agitator having a remote diagnosis and abnormality diagnosis function, characterized in that the acceleration sensor for measuring the vibration generated by the eccentric force generated by the damage of the impeller. 6. The method according to any one of claims 1 to 5, The communication interface unit, A wired communication port for transmitting and receiving data with the control panel by wire; A telecommunication port for connecting to a telecommunication network connected to the remote computer; A signal converter for converting data transmitted and received between the control panel and the remote computer into suitable data; And Stirrer having a remote diagnosis and fault diagnosis function including a display unit for displaying the transmission status of the signal.

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