CN210693438U - Thermal relay with protection function - Google Patents
Thermal relay with protection function Download PDFInfo
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- CN210693438U CN210693438U CN201922187351.9U CN201922187351U CN210693438U CN 210693438 U CN210693438 U CN 210693438U CN 201922187351 U CN201922187351 U CN 201922187351U CN 210693438 U CN210693438 U CN 210693438U
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- 230000000875 corresponding effect Effects 0.000 claims description 8
- 239000007858 starting material Substances 0.000 claims description 4
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Abstract
The utility model relates to a motor work protection device, concretely relates to thermal relay with protect function, including the controller, the controller links to each other with the data acquisition module that is used for gathering the relevant parameter data of motor work, and the data acquisition module links to each other with the analog-to-digital converter output, and the analog-to-digital converter links to each other with the current acquisition unit that is used for gathering the relevant current parameter of motor work, the voltage detection module of gathering motor operating voltage parameter, and the controller links to each other with signal processing module output, and signal processing module input links to each other with the first temperature sensor, the second temperature sensor of installing on the motor; the utility model provides a technical scheme can effectively overcome the detection parameter singleness that prior art exists, can't carry out intelligent protection, lack the defect to motor operating temperature control according to motor abnormal state.
Description
Technical Field
The utility model relates to a motor work protection device, concretely relates to thermal relay with protect function.
Background
The motor is a commonly used driving device, and the temperature has an important influence on the service life of the motor. In the using process, the normal temperature of the motor is kept at about 90 ℃. However, in the working process of the motor, the temperature of the motor is increased under various conditions, such as higher power supply voltage, larger exciting current, increased current caused by asymmetric three-phase voltage, damaged or reduced heat dissipation device of the motor, lack of lubricating oil in a motor bearing, increased temperature of a stator coil of the motor, turn-to-turn short circuit caused by coil insulation failure, interphase short circuit or ground short circuit, and the like. Excessive temperatures can shorten the life of the motor, and if the temperature exceeds the tolerable limit of the motor, the motor can be scrapped.
In the prior art, the running temperature of the three-phase alternating current motor is not monitored, so that the temperature of the motor cannot be found in time after rising, corresponding measures are taken to avoid temperature runaway, and even the motor is damaged. In addition, the detection parameters in the prior art are single, the monitoring dynamic range is very small, the product specifications are various, the use and production management are not facilitated, and the product cost is correspondingly increased.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
To the above-mentioned shortcoming that prior art exists, the utility model provides a electrothermal relay with protect function can effectively overcome the detection parameter singleness that prior art exists, can't carry out intelligent protection, lack the defect to motor operating temperature control according to motor abnormal state.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a thermal relay with a protection function comprises a controller, wherein the controller is connected with a data acquisition module used for acquiring motor work related parameter data, the data acquisition module is connected with the output end of an analog-to-digital converter, and the analog-to-digital converter is connected with a current acquisition unit used for acquiring motor work related current parameters and a voltage detection module used for acquiring motor work voltage parameters;
the controller is connected with the output end of the signal processing module, and the input end of the signal processing module is connected with a first temperature sensor and a second temperature sensor which are arranged on the motor;
the controller is connected with a first memory used for storing a motor working-related current parameter standard value and a motor working voltage parameter standard value, the controller is connected with a second memory used for storing data collected by the data collection module, the controller is connected with a data comparison module used for comparing data in the second memory with data in the first memory, the controller is connected with an execution module used for executing corresponding actions on the motor, the controller is connected with an alarm module used for giving an alarm, the controller is connected with a display module used for displaying data in the second memory through a digital communication port, and the controller is connected with a wireless communication module used for wirelessly sending the data in the second memory to a control center.
Preferably, the current collection unit comprises a current collection module for collecting the working current of the motor, a leakage current detection module for collecting leakage current generated by the working of the motor, a zero sequence current detection module for collecting zero sequence current generated by the working of the motor, and a short circuit detection module for collecting whether a short circuit occurs during the working of the motor.
Preferably, the temperature detection ranges of the first temperature sensor and the second temperature sensor are two adjacent intervals.
Preferably, the temperature detection range of the first temperature sensor is 90-129 ℃, and the temperature detection range of the second temperature sensor is 130-150 ℃.
Preferably, when the controller receives the first temperature sensor signal processed by the signal processing module, the controller controls an alarm module to work; and when the controller receives the second temperature sensor signal processed by the signal processing module, the controller stops the motor through the execution module.
Preferably, when the data comparison module compares the motor work related current parameter in the second memory with the motor work related current parameter standard value in the first memory, if the motor work related current parameter is greater than the motor work related current parameter standard value, the controller stops the motor through the execution module.
Preferably, when the data comparison module compares the motor working voltage parameter in the second memory with the motor working voltage parameter standard value in the first memory, if the motor working voltage parameter is greater than the motor working voltage parameter standard value, the controller stops the motor from working through the execution module.
Preferably, the execution module comprises a shunt release, a voltage loss release, an alternating current contactor and a three-phase motor starter.
Preferably, the alarm module is an audible alarm device and/or a light alarm device.
(III) advantageous effects
Compared with the prior art, the utility model provides a thermal relay with protect function has following beneficial effect:
(1) the current acquisition module in the current acquisition unit acquires the working current of the motor, the leakage current detection module acquires leakage current generated by the working of the motor, the zero sequence current detection module acquires the zero sequence current generated by the working of the motor, the short circuit detection module acquires whether short circuit occurs during the working of the motor, the voltage detection module acquires working voltage parameters of the motor, the working voltage parameters can be displayed on the display module through the digital communication port and can be wirelessly transmitted to the control center through the wireless communication module, and the working current and voltage parameters of the motor can be acquired and simultaneously information interaction can be conveniently carried out to the outside;
(2) the data comparison module compares the motor work related current parameter with the motor work related current parameter standard value, and if the motor work related current parameter is larger than the motor work related current parameter standard value, the controller enables the motor to stop working through the execution module; the data comparison module compares the motor working voltage parameter with a motor working voltage parameter standard value, and if the motor working voltage parameter is larger than the motor working voltage parameter standard value, the controller enables the motor to stop working through the execution module, so that intelligent protection can be performed according to the abnormal state of the motor;
(3) when the controller receives the first temperature sensor signal processed by the signal processing module, the controller controls the alarm module to work; when the controller receives a signal of the second temperature sensor processed by the signal processing module, the controller enables the motor to stop working through the execution module, and corresponding protection measures are taken while the working temperature of the motor is effectively monitored.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of the system of the present invention;
fig. 2 is a schematic diagram of the current detecting unit of fig. 1 according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A thermal relay with a protection function is shown in figures 1 and 2 and comprises a controller, wherein the controller is connected with a data acquisition module for acquiring motor work related parameter data, the data acquisition module is connected with the output end of an analog-to-digital converter, and the analog-to-digital converter is connected with a current acquisition unit for acquiring motor work related current parameters and a voltage detection module for acquiring motor work voltage parameters;
the controller is connected with the output end of the signal processing module, and the input end of the signal processing module is connected with a first temperature sensor and a second temperature sensor which are arranged on the motor;
the controller is connected with a first memory used for storing a motor working related current parameter standard value and a motor working voltage parameter standard value, the controller is connected with a second memory used for storing data acquired by a data acquisition module, the controller is connected with a data comparison module used for comparing data in the second memory with data in the first memory, the controller is connected with an execution module used for executing corresponding actions on the motor, the controller is connected with an alarm module used for giving an alarm, the controller is connected with a display module used for displaying data in the second memory through a digital communication port, and the controller is connected with a wireless communication module used for wirelessly sending data in the second memory to a control center.
The current acquisition unit comprises a current acquisition module for acquiring the working current of the motor, a leakage current detection module for acquiring leakage current generated by the working of the motor, a zero sequence current detection module for acquiring zero sequence current generated by the working of the motor, and a short circuit detection module for acquiring whether short circuit occurs in the working of the motor.
The temperature detection ranges of the first temperature sensor and the second temperature sensor are two adjacent intervals.
The temperature detection range of the first temperature sensor is 90-129 ℃, and the temperature detection range of the second temperature sensor is 130-150 ℃.
When the controller receives the first temperature sensor signal processed by the signal processing module, the controller controls the alarm module to work; when the controller receives the second temperature sensor signal processed by the signal processing module, the controller enables the motor to stop working through the execution module.
And when the data comparison module compares the motor work related current parameter in the second memory with the motor work related current parameter standard value in the first memory, if the motor work related current parameter is larger than the motor work related current parameter standard value, the controller enables the motor to stop working through the execution module.
And when the data comparison module compares the motor working voltage parameter in the second memory with the motor working voltage parameter standard value in the first memory, if the motor working voltage parameter is greater than the motor working voltage parameter standard value, the controller enables the motor to stop working through the execution module.
When the execution module comprises a shunt release, a voltage loss release, an alternating current contactor and a three-phase motor starter.
When the alarm module is a sound alarm device and/or a light alarm device.
The current acquisition module in the current acquisition unit acquires motor working current, the leakage current detection module acquires leakage current generated by motor work, the zero sequence current detection module acquires zero sequence current generated by motor work, the short circuit detection module acquires whether short circuit occurs in motor work, the voltage detection module acquires motor working voltage parameters, the motor working voltage parameters can be displayed on the display module through the digital communication port, the motor working current and the voltage full-parameter acquisition can be realized, and the information interaction can be conveniently carried out externally.
The data comparison module compares the motor work related current parameter with the motor work related current parameter standard value, and if the motor work related current parameter is larger than the motor work related current parameter standard value, the controller enables the motor to stop working through the execution module; the data comparison module compares the motor working voltage parameter with the motor working voltage parameter standard value, and if the motor working voltage parameter is larger than the motor working voltage parameter standard value, the controller enables the motor to stop working through the execution module, so that intelligent protection can be performed according to the abnormal state of the motor.
The execution module comprises a shunt release, a voltage-loss release, an alternating current contactor and a three-phase motor starter.
When the controller receives the first temperature sensor signal processed by the signal processing module, the controller controls the alarm module to work; when the controller receives a signal of the second temperature sensor processed by the signal processing module, the controller enables the motor to stop working through the execution module, and corresponding protection measures are taken while the working temperature of the motor is effectively monitored.
The temperature detection ranges of the first temperature sensor and the second temperature sensor are two adjacent intervals. The temperature detection range of the first temperature sensor is 90-129 ℃, and the temperature detection range of the second temperature sensor is 130-150 ℃. The alarm module is a sound alarm device and/or a light alarm device.
First temperature sensor, the second temperature sensor that adopt among this application technical scheme can adopt application number CN 201620767431.5's utility model discloses a range adjustable temperature sensor processing circuit, and analog to digital converter can adopt AD 7478. The internal structure and the pin function of the electrical component related in the technical scheme of the application can be checked in the factory specifications, and the circuit connection relationship of the electrical component related in the technical scheme of the application can be obtained according to the factory specifications, which is common general knowledge of technicians in the field.
It is noted that the present invention is only for providing a hardware configuration different from the prior art, so that the skilled person can implement further development under such hardware configuration, and the software program can be programmed by the programmer in the field at the later stage according to the actual effect requirement.
The utility model provides a thermal relay with protect function has following beneficial effect:
(1) the current acquisition module in the current acquisition unit acquires the working current of the motor, the leakage current detection module acquires leakage current generated by the working of the motor, the zero sequence current detection module acquires the zero sequence current generated by the working of the motor, the short circuit detection module acquires whether short circuit occurs during the working of the motor, the voltage detection module acquires working voltage parameters of the motor, the working voltage parameters can be displayed on the display module through the digital communication port and can be wirelessly transmitted to the control center through the wireless communication module, and the working current and voltage parameters of the motor can be acquired and simultaneously information interaction can be conveniently carried out to the outside;
(2) the data comparison module compares the motor work related current parameter with the motor work related current parameter standard value, and if the motor work related current parameter is larger than the motor work related current parameter standard value, the controller enables the motor to stop working through the execution module; the data comparison module compares the motor working voltage parameter with a motor working voltage parameter standard value, and if the motor working voltage parameter is larger than the motor working voltage parameter standard value, the controller enables the motor to stop working through the execution module, so that intelligent protection can be performed according to the abnormal state of the motor;
(3) when the controller receives the first temperature sensor signal processed by the signal processing module, the controller controls the alarm module to work; when the controller receives a signal of the second temperature sensor processed by the signal processing module, the controller enables the motor to stop working through the execution module, and corresponding protection measures are taken while the working temperature of the motor is effectively monitored.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. A thermal relay with a protection function, comprising a controller, characterized in that: the controller is connected with a data acquisition module for acquiring motor work related parameter data, the data acquisition module is connected with the output end of an analog-to-digital converter, and the analog-to-digital converter is connected with a current acquisition unit for acquiring motor work related current parameters and a voltage detection module for acquiring motor work voltage parameters;
the controller is connected with the output end of the signal processing module, and the input end of the signal processing module is connected with a first temperature sensor and a second temperature sensor which are arranged on the motor;
the controller is connected with a first memory used for storing a motor working-related current parameter standard value and a motor working voltage parameter standard value, the controller is connected with a second memory used for storing data collected by the data collection module, the controller is connected with a data comparison module used for comparing data in the second memory with data in the first memory, the controller is connected with an execution module used for executing corresponding actions on the motor, the controller is connected with an alarm module used for giving an alarm, the controller is connected with a display module used for displaying data in the second memory through a digital communication port, and the controller is connected with a wireless communication module used for wirelessly sending the data in the second memory to a control center.
2. The thermal relay with protection function according to claim 1, characterized in that: the current acquisition unit comprises a current acquisition module for acquiring the working current of the motor, a leakage current detection module for acquiring leakage current generated by the working of the motor, a zero sequence current detection module for acquiring zero sequence current generated by the working of the motor, and a short circuit detection module for acquiring whether short circuit occurs in the working of the motor.
3. The thermal relay with protection function according to claim 1, characterized in that: the temperature detection ranges of the first temperature sensor and the second temperature sensor are two adjacent intervals.
4. The thermal relay with protection function according to claim 3, characterized in that: the temperature detection range of the first temperature sensor is 90-129 ℃, and the temperature detection range of the second temperature sensor is 130-150 ℃.
5. The thermal relay with protection function according to claim 1, characterized in that: when the controller receives the first temperature sensor signal processed by the signal processing module, the controller controls an alarm module to work; and when the controller receives the second temperature sensor signal processed by the signal processing module, the controller stops the motor through the execution module.
6. The thermal relay with protection function according to claim 1, characterized in that: when the data comparison module compares the motor working-related current parameter in the second memory with the motor working-related current parameter standard value in the first memory, if the motor working-related current parameter is greater than the motor working-related current parameter standard value, the controller enables the motor to stop working through the execution module.
7. The thermal relay with protection function according to claim 1, characterized in that: when the data comparison module compares the motor working voltage parameter in the second memory with the motor working voltage parameter standard value in the first memory, if the motor working voltage parameter is larger than the motor working voltage parameter standard value, the controller enables the motor to stop working through the execution module.
8. The thermal relay with protection function according to claim 1, characterized in that: when the execution module comprises a shunt release, a voltage loss release, an alternating current contactor and a three-phase motor starter.
9. The thermal relay with protection function according to claim 1, characterized in that: when the alarm module is a sound alarm device and/or a light alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922187351.9U CN210693438U (en) | 2019-12-09 | 2019-12-09 | Thermal relay with protection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922187351.9U CN210693438U (en) | 2019-12-09 | 2019-12-09 | Thermal relay with protection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867830A (en) * | 2019-12-09 | 2020-03-06 | 安徽智纳农业科技有限公司 | Thermal relay with protection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867830A (en) * | 2019-12-09 | 2020-03-06 | 安徽智纳农业科技有限公司 | Thermal relay with protection function |
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Granted publication date: 20200605 Termination date: 20211209 |