Intelligent motor control unit

Abstract

The invention relates to the technical field of motor control, in particular to an intelligent motor control unit which comprises an intelligent control cabinet, a sampling current transformer, a built-in sensing module and a temperature regulation and control unit. When collected running current and voltage data are larger than rated data, a shutdown alarm function is achieved through the alarm module, a measured value of a built-in sensor of the motor is detected through cooperation of the protection signal input module and the built-in sensing module, the motor is in a normal running state within a set range, and equipment stops running and gives an alarm when the measured value exceeds a set value. The temperature sensor is used for collecting the temperature of the motor during operation in real time, cold water or hot water is conveyed into the heat exchange cavity through the temperature adjusting mechanism, so that the temperature of the motor during operation is within a set range, and by the adoption of the structure, the intelligent control degree of the motor is higher, and therefore the control effect of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor control, and in particular to an intelligent motor control unit. Background Art

[0002] In modern industrial production applications, various motors are the power source for driving industrial equipment. Due to problems in the motor structure, changes in usage conditions, or improper usage methods, the motor will fail, and serious failures will cause the motor to burn out. Therefore, the motor starting method and safe and reliable protection measures are very necessary to achieve long-term safe and stable operation of the motor. In the existing technology, the starting, protection and stopping of the motor are mostly controlled by a control cabinet.

[0003] However, the existing motor control cabinet realizes the start and stop control of the equipment by connecting the normally open and normally closed points through lines, and the intelligent control degree of the motor is low, and the control effect of the motor is not ideal. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent motor control unit, aiming to solve the technical problems that the existing motor control cabinet realizes the start and stop control of the equipment by connecting the normally open and normally closed points through lines, the degree of intelligent control of the motor is low, and the control effect of the motor is not ideal.

[0005] To achieve the above-mentioned object, the present invention provides an intelligent motor control unit, including an intelligent control cabinet, a sampling current transformer, a built-in sensor module and a temperature control unit, wherein the intelligent control cabinet is electrically connected to the motor, the sampling current transformer is electrically connected to the motor, the sampling current transformer is used to collect the three-phase running current of the motor and the three-phase voltage at the motor end in real time, the intelligent control cabinet is provided with motor running protection parameters, the intelligent control cabinet is also provided with an alarm module, a display panel and a protection signal input module, the built-in sensor module is installed inside the motor, the built-in sensor module is electrically connected to the protection signal input module, and the built-in sensor module is used to detect the running parameters of the motor in real time;

[0006] The temperature control unit includes a water tank, a temperature regulating mechanism, an input port and a heat-insulating shell. The built-in sensor module is provided with a temperature sensor, and the temperature sensor is used to detect the temperature of the motor in real time when it is running. The heat-insulating shell is arranged on the outside of the motor, and a heat exchange cavity is arranged between the heat-insulating shell and the outer wall of the motor. The temperature regulating mechanism is arranged on the water tank, and the heat-insulating shell is provided with an input port, which is connected with the heat exchange cavity, and the output end of the temperature regulating mechanism is connected with the input port. The heat-insulating shell is also provided with a reflux port, which is located at one end of the heat exchange cavity away from the input port, and a reflux pipe is arranged between the reflux port and the return water port of the water tank.

[0007] Wherein, the temperature regulating mechanism includes a first delivery pipe, a second delivery pipe, an output main pipe, a pump body, a semiconductor refrigeration sheet and a heating wire. A partition is arranged inside the water tank, and the partition divides the interior of the water tank into a heating zone and a cooling zone. The heating wire is arranged inside the heating zone, and the semiconductor refrigeration sheet is arranged on the cooling zone. The output main pipe is arranged at the input end of the pump body, and the output end of the pump body is connected to the input port through a pipeline. The first delivery pipe and the second delivery pipe are respectively arranged at one end of the output main pipe away from the pump body. The first delivery pipe corresponds to the heating zone, and the second delivery pipe corresponds to the cooling zone. The first delivery pipe and the second delivery pipe are both provided with a first control valve.

[0008] Among them, the end of the return pipe away from the insulation shell is respectively provided with a first return branch pipe and a second return branch pipe, the first return branch pipe corresponds to the heating zone, the second return branch pipe corresponds to the refrigeration zone, and the first return branch pipe and the second return branch pipe are both provided with a second control valve.

[0009] Wherein, a dustproof shell is arranged on the outer side wall of the water tank, and the dustproof shell is arranged outside the semiconductor refrigeration plate.

[0010] Wherein, a fixed wing plate is provided at one end of the dustproof shell close to the outer side wall of the water tank, and the fixed wing plate is detachably connected to the outer side wall of the water tank.

[0011] Wherein, the intelligent motor control unit further includes a heat dissipation component, and the heat dissipation component is arranged inside the end of the dustproof shell away from the water tank.

[0012] Wherein, the heat dissipation assembly includes a mounting frame and exhaust fan blades. The mounting frame is detachably connected to the dustproof shell and is located inside the end of the dustproof shell away from the water tank. The exhaust fan blades are arranged on the mounting frame.

[0013] An intelligent motor control unit of the present invention samples the running current and voltage of the motor and sets the rated power and current of the motor accordingly. When the collected running current and voltage data are greater than the rated data, the shutdown alarm function is realized through the alarm module. If the motor is within the rated range, it can operate normally and the power data is displayed in real time on the display panel. The protection signal input module cooperates with the built-in sensor module to detect the measured value of the built-in sensor of the motor. The motor is in a normal operating state within the set range. When the set value is exceeded, the device stops running and alarms, and displays the corresponding fault signal on the display panel. The temperature sensor is used to collect the running temperature of the motor in real time. When the motor is in an overheated or overcooled running state, the temperature regulating mechanism is used to transport cold water or hot water to the inside of the heat exchange cavity, so that the temperature of the motor is within the set range during operation to avoid affecting the operation of the motor. With the above structure, the intelligent control degree of the motor is higher, thereby improving the control effect of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a principle block diagram of an intelligent motor control unit according to a first embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the temperature control unit in the first embodiment of the present invention.

[0017] Figure 3 4 is a top view of the temperature control unit in the first embodiment of the present invention.

[0018] Figure 4 The present invention provides Figure 3 The internal structure cross-sectional view of line AA.

[0019] Figure 5 The present invention provides Figure 3 Cross-sectional view of the internal structure of line BB.

[0020] Figure 6 It is a schematic diagram of the external structure of the water tank in the second embodiment of the present invention.

[0021] 101-intelligent control cabinet, 102-sampling current transformer, 103-built-in sensor module, 104-temperature control unit, 105-water tank, 106-input port, 107-insulation shell, 108-first delivery pipe, 109-second delivery pipe, 110-output main pipe, 111-pump body, 112-semiconductor refrigeration plate, 113-heating wire, 114-alarm module, 115-display panel, 116-protection signal input module, 117-temperature sensor, 118-heat exchange cavity, 119-reflux port, 120-reflux pipe, 121-partition, 122-heating zone, 123-reflux zone, 124-first control valve, 125-first reflux branch pipe, 126-second reflux branch pipe, 127-second control valve, 128-dustproof shell, 129-fixed wing plate, 201-mounting frame, 202-exhaust fan blade. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] First embodiment:

[0024] See also Figures 1 to 5 ,in Figure 1 is a principle block diagram of the intelligent motor control unit of the first embodiment, Figure 2 is a schematic diagram of the structure of the temperature control unit in the first embodiment, Figure 3 is a top view of the temperature control unit in the first embodiment, Figure 4 yes Figure 3 The internal structure cross-sectional view of line AA, Figure 5 yes Figure 3 Cross-sectional view of the internal structure of line BB.

[0025] The present invention provides an intelligent motor control unit: including an intelligent control cabinet 101, a sampling current transformer 102, a built-in sensor module 103 and a temperature control unit 104, wherein the temperature control unit 104 includes a water tank 105, a temperature control mechanism, an input port 106 and a heat-insulating shell 107, and the temperature control mechanism includes a first delivery pipe 108, a second delivery pipe 109, an output main pipe 110, a pump body 111, a semiconductor cooling sheet 112 and a heating wire 113. The above scheme solves the problem that the existing motor control cabinet realizes the start and stop control of the equipment by connecting the normally open and normally closed points through the line, the intelligent control degree of the motor is low, and the control effect of the motor is not ideal. It can be understood that the above scheme can be used in the structure of the intelligent motor control unit.

[0026] According to this specific embodiment, the intelligent control cabinet 101 is electrically connected to the motor, the sampling current transformer 102 is electrically connected to the motor, the sampling current transformer 102 is used to collect the three-phase running current of the motor and the three-phase voltage at the motor end in real time, the intelligent control cabinet 101 is provided with motor running protection parameters, the intelligent control cabinet 101 is also provided with an alarm module 114, a display panel 115 and a protection signal input module 116, the built-in sensor module 103 is installed inside the motor, the built-in sensor module 103 is electrically connected to the protection signal input module 116, and the built-in sensor module 103 is used The built-in sensor module 103 is provided with a temperature sensor 117, which is used to detect the temperature of the motor when it is running in real time. The heat-insulating shell 107 is arranged outside the motor, and a heat exchange cavity 118 is arranged between the heat-insulating shell 107 and the outer wall of the motor. The water tank 105 is provided with the temperature adjustment mechanism, and the heat-insulating shell 107 is provided with the input port 106, which is connected to the heat exchange cavity 118. The output end of the temperature adjustment mechanism is connected to the input port 106, and the heat-insulating shell 107 is also provided with a return The return port 119 is located at one end of the heat exchange chamber 118 away from the input port 106. A return pipe 120 is provided between the return port 119 and the return port of the water tank 105. The rated power and current of the motor are set accordingly by sampling the running current and voltage of the motor. When the collected running current and voltage data are greater than the rated data, the shutdown alarm function is realized through the alarm module 114. If the motor is within the rated range, it can operate normally and the power data is displayed in real time on the display panel 115. The protection signal input module 116 and the built-in sensor module 103 are matched. The device 110 is combined to detect the measurement value of the built-in sensor of the motor. If the motor is within the set range, it is in normal operation. When the set value is exceeded, the device stops running and alarms, and displays the corresponding fault signal on the display panel 115. The temperature sensor 117 is used to collect the temperature of the motor in real time during operation. When the motor is in an overheated or overcooled operating state, cold water or hot water is transported to the inside of the heat exchange chamber 118 through the temperature adjustment mechanism, so that the temperature of the motor is within the set range during operation, avoiding affecting the operation of the motor. With the above structure, the intelligent control of the motor is higher, thereby improving the control effect of the motor.

[0027] The water tank 105 is provided with a partition 121 inside, and the partition 121 divides the inside of the water tank 105 into a heating zone 122 and a cooling zone 123. The heating zone 122 is provided with the heating wire 113, and the cooling zone 123 is provided with the semiconductor cooling sheet 112. The input end of the pump body 111 is provided with the output main pipe 110, and the output end of the pump body 111 is connected to the input port 106 through a pipeline. The output main pipe 110 is provided with the first delivery pipe 108 and the second delivery pipe 109 at one end away from the pump body 111, respectively. The first delivery pipe 108 corresponds to the heating zone 122, and the second delivery pipe 109 corresponds to the cooling zone 123. The first delivery pipe 108 and the second delivery pipe 109 are both provided with a first control valve 124. The heating wire 113 is used to heat the water in the heating zone 122, and the semiconductor cooling sheet 112 is used to heat the water in the cooling zone 123. When the motor is running at a temperature that is too low, the first control valve 124 controls the first delivery pipe 108 to be opened, the second delivery pipe 109 to be closed, the pump body 111 to be started, and the hot water in the heating zone 122 is transported to the heat exchange chamber 118 through the cooperation of the first delivery pipe 108, the output main pipe 110 and the input port 106, so that the motor exchanges heat with the hot water in the heat exchange chamber 118, thereby increasing the operating temperature of the motor. When the motor is running at a high temperature, the first control valve 124 controls the second delivery pipe 109 to be opened, the first delivery pipe 108 to be closed, the pump body 111 to be started, and the cold water in the refrigeration zone 123 is transported to the heat exchange chamber 118 through the cooperation of the second delivery pipe 109, the output main pipe 110 and the input port 106, thereby causing the motor to exchange heat with the cold water in the heat exchange chamber 118, thereby reducing the operating temperature of the motor, so that the motor is always within the set range during operation, thereby avoiding affecting the operation of the motor.

[0028] Secondly, the end of the return pipe 120 away from the heat-insulating shell 107 is respectively provided with a first return branch pipe 125 and a second return branch pipe 126, the first return branch pipe 125 corresponds to the heating zone 122, the second return branch pipe 126 corresponds to the cooling zone 123, and the first return branch pipe 125 and the second return branch pipe 126 are both provided with a second control valve 127. When the hot water in the heating zone 122 is transported to the heat exchange chamber 118 through the cooperation of the first delivery pipe 108, the output main pipe 110 and the input port 106, the second control valve 127 controls the first return main pipe to open, and the second return main pipe 126 is closed. The branch pipe 126 is closed, so that the water after heat exchange in the heat exchange chamber 118 flows back to the heating zone 122 through the cooperation of the return pipe 120 and the first return branch pipe 125. When the cold water in the refrigeration zone 123 is transported to the heat exchange chamber 118 through the cooperation of the second delivery pipe 109, the output main pipe 110 and the input port 106, the second control valve 127 controls the second return branch pipe 126 to open, and the first return branch pipe 125 is closed, so that the water after heat exchange in the heat exchange chamber 118 flows back to the refrigeration zone 123 through the cooperation of the return pipe 120 and the second return main pipe, thereby realizing cyclic heat exchange.

[0029] At the same time, a dustproof cover 128 is provided on the outer wall of the water tank 105, and the dustproof cover 128 is provided on the outside of the semiconductor refrigeration plate 112. Through the setting of the dustproof cover 128, excessive dust in the external environment is prevented from adhering to the outside of the hot end of the semiconductor refrigeration plate 112, resulting in unsatisfactory cooling effect of the semiconductor refrigeration plate 112.

[0030] In addition, a fixed wing plate 129 is provided at one end of the dustproof shell 128 close to the outer wall of the water tank 105, and the fixed wing plate 129 is detachably connected to the outer wall of the water tank 105. The installation of the dustproof shell 128 is completed by setting the fixed wing plate 129.

[0031] When using an intelligent motor control unit of the present embodiment, the rated power and current of the motor are set accordingly by sampling the running current and voltage of the motor. When the collected running current and voltage data are greater than the rated data, the shutdown alarm function is realized through the alarm module 114. If the motor is within the rated range, it can operate normally and the power data is displayed in real time on the display panel 115. The protection signal input module 116 cooperates with the built-in sensor module 103 to detect the measured value of the built-in sensor of the motor. The motor is in a normal operating state within the set range. When the set value is exceeded, the device stops running and alarms, and the corresponding fault signal is displayed on the display panel 115, and the heating wire 113 is used to heat the heating area 1 22, and the semiconductor refrigeration sheet 112 is used to cool the water in the refrigeration zone 123. When the temperature of the motor is too low during operation, the first control valve 124 controls the first delivery pipe 108 to be opened, the second delivery pipe 109 to be closed, and the pump body 111 is started. The hot water in the heating zone 122 is transported to the heat exchange chamber 118 through the cooperation of the first delivery pipe 108, the output main pipe 110 and the input port 106, so that the motor exchanges heat with the hot water in the heat exchange chamber 118 to increase the operating temperature of the motor. When the operating temperature of the motor is high, the first control valve 124 controls the second delivery pipe 109 to be opened, the first delivery pipe 108 to be closed, and the pump body 111 is started. The second delivery pipe 109, the output main pipe 110 and the input port 106 cooperate to deliver the cold water in the refrigeration zone 123 to the heat exchange chamber 118, so that the motor exchanges heat with the cold water in the heat exchange chamber 118, and reduces the operating temperature of the motor, so that the motor is always within the set range during operation, avoiding affecting the operation of the motor. The water in the heating zone 122 is heated by the heating wire 113, and the water in the refrigeration zone 123 is cooled by the semiconductor refrigeration sheet 112. When the temperature of the motor is too low during operation, the first control valve 124 controls the first delivery pipe 108 to open, the second delivery pipe 109 to close, and the pump body 111 is started. 0 cooperates with the input port 106 to transport the hot water in the heating area 122 to the heat exchange chamber 118, so that the motor exchanges heat with the hot water in the heat exchange chamber 118, thereby increasing the operating temperature of the motor. When the operating temperature of the motor is high, the first control valve 124 controls the second delivery pipe 109 to open, the first delivery pipe 108 to close, and the pump body 111 is started. Through the cooperation of the second delivery pipe 109, the output main pipe 110 and the input port 106, the cold water in the refrigeration area 123 is transported to the heat exchange chamber 118, so that the motor exchanges heat with the cold water in the heat exchange chamber 118, thereby reducing the operating temperature of the motor, so that the motor is always within the set range when running, thereby avoiding affecting the operation of the motor.By adopting the above structure, the intelligent control degree of the motor is higher, thereby improving the control effect of the motor.

[0032] Second embodiment:

[0033] Based on the first embodiment, please refer to Figure 6 , Figure 6 Schematic diagram of the external structure of the water tank in the second embodiment.

[0034] The present invention provides an intelligent motor control unit which also includes a heat dissipation component. The heat dissipation component includes a mounting frame 201 and exhaust fan blades 202 .

[0035] According to this specific embodiment, the heat dissipation component is arranged inside the end of the dustproof shell 128 away from the water tank 105. Through the arrangement of the heat dissipation component, the circulation speed between the inside of the dustproof shell 128 and the outside air is accelerated, and the heat accumulated at the hot end of the semiconductor refrigeration plate 112 is taken away by the flowing air, so that the cooling effect of the cold end of the semiconductor refrigeration plate 112 is better.

[0036] Among them, the mounting frame 201 is detachably connected to the dustproof shell 128 and is located inside the end of the dustproof shell 128 away from the water tank 105. The exhaust fan blades 202 are provided on the mounting frame 201. The exhaust fan blades 202 are installed on the mounting frame 201, and the mounting frame 201 is installed on the dustproof shell 128, thereby completing the installation of the heat dissipation assembly.

[0037] When using an intelligent motor control unit of this embodiment, the exhaust fan blade 202 is installed on the mounting frame 201, and the mounting frame 201 is installed on the dustproof shell 128, thereby completing the installation of the heat dissipation component, and starting the exhaust fan blade 202 to speed up the circulation speed of the air inside the dustproof shell 128 and the outside air, and the heat accumulated at the hot end of the semiconductor refrigeration plate 112 is taken away by the flowing air, so that the cooling effect of the cold end of the semiconductor refrigeration plate 112 is better.

[0038] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An intelligent motor control unit, characterized in that: It includes an intelligent control cabinet, a sampling current transformer, a built-in sensor module and a temperature control unit, wherein the intelligent control cabinet is electrically connected to the motor, the sampling current transformer is electrically connected to the motor, the sampling current transformer is used to collect the three-phase running current of the motor and the three-phase voltage at the motor end in real time, the intelligent control cabinet is provided with motor running protection parameters, the intelligent control cabinet is also provided with an alarm module, a display panel and a protection signal input module, the built-in sensor module is installed inside the motor, the built-in sensor module is electrically connected to the protection signal input module, and the built-in sensor module is used to detect the running parameters of the motor in real time; The temperature control unit includes a water tank, a temperature regulating mechanism, an input port and a heat-insulating shell. The built-in sensor module is provided with a temperature sensor, and the temperature sensor is used to detect the temperature of the motor in real time when it is running. The heat-insulating shell is arranged on the outside of the motor, and a heat exchange cavity is arranged between the heat-insulating shell and the outer wall of the motor. The temperature regulating mechanism is arranged on the water tank, and the heat-insulating shell is provided with an input port, which is connected with the heat exchange cavity, and the output end of the temperature regulating mechanism is connected with the input port. The heat-insulating shell is also provided with a reflux port, which is located at one end of the heat exchange cavity away from the input port, and a reflux pipe is arranged between the reflux port and the return water port of the water tank.

2. The intelligent motor control unit according to claim 1, characterized in that: The temperature regulating mechanism includes a first delivery pipe, a second delivery pipe, an output main pipe, a pump body, a semiconductor refrigeration sheet and a heating wire. A partition is arranged inside the water tank, and the partition divides the interior of the water tank into a heating zone and a cooling zone. The heating wire is arranged inside the heating zone, and the semiconductor refrigeration sheet is arranged on the cooling zone. The output main pipe is arranged at the input end of the pump body, and the output end of the pump body is connected to the input port through a pipeline. The first delivery pipe and the second delivery pipe are respectively arranged at one end of the output main pipe away from the pump body. The first delivery pipe corresponds to the heating zone, and the second delivery pipe corresponds to the cooling zone. The first delivery pipe and the second delivery pipe are both provided with a first control valve.

3. The intelligent motor control unit according to claim 2, characterized in that: The end of the return pipe away from the heat-insulating shell is respectively provided with a first return branch pipe and a second return branch pipe, the first return branch pipe corresponds to the heating zone, the second return branch pipe corresponds to the refrigeration zone, and the first return branch pipe and the second return branch pipe are both provided with a second control valve.

4. The intelligent motor control unit according to claim 3, characterized in that: A dustproof shell is arranged on the outer side wall of the water tank, and the dustproof shell is arranged outside the semiconductor refrigeration plate.

5. The intelligent motor control unit according to claim 4, characterized in that: A fixed wing plate is arranged at one end of the dustproof shell close to the outer side wall of the water tank, and the fixed wing plate is detachably connected to the outer side wall of the water tank.

6. The intelligent motor control unit according to claim 5, characterized in that: The intelligent motor control unit also includes a heat dissipation component, and the heat dissipation component is arranged inside the end of the dustproof shell away from the water tank.

7. The intelligent motor control unit according to claim 6, characterized in that: The heat dissipation assembly comprises a mounting frame and exhaust fan blades. The mounting frame is detachably connected to the dustproof shell and is located inside an end of the dustproof shell away from the water tank. The exhaust fan blades are arranged on the mounting frame.

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