Soft start control cabinet for direct-current oil pump motor

Abstract

The utility model relates to a DC oil pump motor soft start control cabinet, and relates to the technical field of control cabinets. The DC oil pump motor soft start control cabinet comprises a cabinet body and further comprises a power supply adjusting module, a data detection module and a signal processing module, the power supply adjusting module is used for being electrically connected with a DC oil pump motor, and the power supply adjusting module and the data detection module are both controlled by the signal processing module. The data detection module is used for detecting the magnitude of current and voltage in the direct current oil pump motor, and the signal processing module is used for controlling the magnitude of current input to the direct current motor by the power supply adjusting module based on data detected by the data detection module. The direct-current oil pump motor starting method has the effect of reducing the probability that the starting current is too large when the direct-current oil pump motor is started.

Description

Technical Field

[0001] This application relates to the field of control cabinet technology, and in particular to a DC oil pump motor soft start control cabinet. Background Technology

[0002] With the continuous development of the social economy and the increasing level of science and technology, my country's industry is also booming. As a type of electric motor specially designed to drive oil pumps, DC oil pump motors can work using DC power to convert electrical energy into mechanical energy, thereby driving the oil pump to transport liquids. They usually have the characteristics of high reliability and therefore play an important role in industry.

[0003] Regarding the aforementioned technologies, existing technologies typically use ordinary electrical control cabinets to start DC oil pump motors. However, when starting a DC oil pump motor, an ordinary electrical control cabinet usually uses a direct starting method. This causes the starting current transmitted from the control cabinet to the DC oil pump motor to reach several times the rated current instantaneously, resulting in a significant current surge to the DC oil pump motor and the power grid. Consequently, this increases the likelihood of damage to the DC oil pump motor, and therefore requires improvement. Utility Model Content

[0004] To reduce the probability of excessive starting current when starting a DC oil pump motor, this application provides a soft-start control cabinet for a DC oil pump motor.

[0005] This application provides a DC oil pump motor soft starter control cabinet, which adopts the following technical solution:

[0006] A soft-start control cabinet for a DC oil pump motor includes a cabinet body, a power supply regulation module, a data detection module, and a signal processing module. The power supply regulation module is electrically connected to the DC oil pump motor. Both the power supply regulation module and the data detection module are controlled by the signal processing module. The data detection module is used to detect the current and voltage levels within the DC oil pump motor. The signal processing module is used to control the current input to the DC motor by the power supply regulation module based on the data detected by the data detection module.

[0007] By adopting the above technical solution, compared with the existing technology that uses direct starting, the starting current transmitted from the control cabinet to the DC oil pump motor can instantly reach several times the rated current, causing a large current surge to the DC oil pump motor and the power grid, increasing the probability of damage to the DC oil pump motor. This application, through the setting of a power supply regulation module, a data detection module, and a signal processing module, allows the data detection module to detect the current and voltage within the DC oil pump motor in real time. This enables the signal processing module to control the current input to the DC motor from the power supply regulation module based on the data detected by the data detection module, thereby regulating the speed of the DC oil pump motor and achieving a soft start. This smooth start effectively reduces the probability of the starting current within the DC oil pump motor instantly exceeding several times the rated current, effectively reducing the current surge received by the DC oil pump motor and thus effectively protecting it.

[0008] Preferably, the cabinet has heat dissipation grooves on its side walls, and the internal chambers of the cabinet are connected to the outside through the heat dissipation grooves.

[0009] By adopting the above technical solution and setting up the heat dissipation groove, the cavity inside the cabinet can be connected to the outside through the heat dissipation groove, thereby enabling the electronic components inside the cabinet to dissipate heat on their own, thus reducing the probability of damage to the electronic components inside the cabinet due to excessively high temperature inside the cabinet cavity.

[0010] Preferably, the system also includes a temperature detection module and a cooling fan, both of which are controlled by the signal processing module. The air outlet of the cooling fan faces the heat dissipation slot. The temperature detection module is used to detect the temperature inside the cabinet, and the signal processing module is used to control the opening and closing of the cooling fan based on the detected temperature.

[0011] By adopting the above technical solution and configuring the temperature detection module and the cooling fan, the temperature detection module can detect the temperature inside the heat sink. Based on the detected temperature, the signal processing module can control the opening and closing of the cooling fan. This allows the cooling fan to turn on when the temperature inside the cabinet cavity is too high, thus cooling the electronic components inside the cabinet and reducing the probability of the electronic components overheating.

[0012] Preferably, the cabinet is also provided with a sealing mechanism, which includes a rotating motor, a synchronization component and a plurality of sealing plates. The plurality of sealing plates are disposed in the heat dissipation groove and distributed along the height direction of the heat dissipation groove. Each sealing plate is rotatably connected to the cabinet. The rotating motor drives each sealing plate to rotate through the synchronization component to seal the heat dissipation groove.

[0013] By adopting the above technical solution and setting the sealing mechanism, the rotating motor can drive each sealing plate to rotate through the synchronous component, thereby opening the heat dissipation slots and allowing hot air inside the cabinet cavity to circulate to the outside of the heat dissipation slots, reducing the probability of the electronic components inside the cabinet overheating. At the same time, the sealing plates can also close the heat dissipation slots when the control cabinet is not in operation, thereby reducing the probability of external dust and debris entering the cabinet through the heat dissipation slots.

[0014] Preferably, the synchronization component includes a conversion element, a drive frame, and several synchronization frames. The drive frame is slidably connected to the cabinet, and the synchronization frames correspond to the sealing plates. One end of each synchronization frame is rotatably connected to the corresponding sealing plate, and the other end is rotatably connected to the drive frame. The rotating motor drives the drive frame to slide through the conversion element.

[0015] By adopting the above technical solution and setting the synchronization component, the rotating motor can drive the drive frame to slide through the conversion component, thereby causing the drive frame to drive each synchronization frame to move, and in turn, the synchronization frame to drive each sealing plate to rotate, thus realizing the driving of each sealing plate and effectively saving the electronic components needed to drive the rotation of several sealing plates.

[0016] Preferably, in two adjacent sealing plates, a sealing magnet is provided on the side of the upper sealing plate closer to the cooling fan and on the side of the lower sealing plate away from the cooling fan, and the adjacent sealing magnets are arranged in close contact.

[0017] By adopting the above technical solution, the arrangement of the sealing plate and the sealing magnet allows the bottom sealing magnet of the previous sealing plate to be magnetically attracted to the top sealing magnet of the next sealing plate when the sealing plate is in the state of sealing the heat sink. This makes the adjacent sealing plates stick to each other tightly, improving the sealing degree of the heat sink.

[0018] Preferably, the rotating motor is controlled by the signal processing module, which controls the rotor rotation of the rotating motor based on the temperature detected by the temperature detection module.

[0019] By adopting the above technical solution and configuring the rotating motor and signal processing module, the signal processing module can control the rotation of the rotating motor rotor based on the temperature detected by the temperature detection module. This allows the rotor inside the rotating motor to rotate at a suitable angle, adjusts the rotation angle of the sealing plate, and thus adjusts the opening size of the heat dissipation slot, effectively improving the heat dissipation effect.

[0020] Preferably, the cooling fan is controlled by the signal processing module, which controls the rotation speed of the fan blades inside the cooling fan based on the temperature detected by the temperature detection module.

[0021] By adopting the above technical solution and configuring the cooling fan and signal processing module, the signal processing module can control the rotation speed of the fan blades inside the cooling fan based on the temperature detected by the temperature detection module, thereby adjusting the rotation speed of the fan blades inside the cooling fan and increasing the cooling effect of the cooling fan.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] The power supply regulation module, data detection module, and signal processing module are configured such that the data detection module can detect the current and voltage levels in the oil pump motor in real time. This allows the signal processing module to control the current input to the DC motor from the power supply regulation module based on the data detected by the data detection module, thereby regulating the speed of the DC oil pump motor and achieving soft start. This smooth start effectively reduces the probability of the starting current in the DC oil pump motor exceeding the rated current by several times, effectively reducing the current surge received by the DC oil pump motor and thus effectively protecting it.

[0024] The temperature detection module and cooling fan are configured so that the temperature detection module can detect the temperature inside the heat sink, and the signal processing module can control the opening and closing of the cooling fan based on the detected temperature. This allows the cooling fan to turn on when the temperature inside the cabinet cavity is too high, and to dissipate heat from the electronic components inside the cabinet, reducing the chance of the electronic components overheating.

[0025] The enclosure mechanism allows the rotating motor to drive each enclosure plate to rotate via a synchronization component. This opens the heat dissipation slots, allowing hot air inside the cabinet cavity to circulate to the outside, reducing the likelihood of overheating of electronic components inside the cabinet. At the same time, the enclosure plates can also close the heat dissipation slots when the control cabinet is not in operation, further reducing the chance of external dust and debris entering the cabinet through the heat dissipation slots. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the overall structure of the DC oil pump motor soft start control cabinet in the embodiments of this application.

[0027] Figure 2 This is a structural block diagram showing the electrical connection of the signal processing module in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram illustrating the structure of the cooling fan in the embodiments of this application.

[0029] Figure 4This is a schematic diagram illustrating the structure of the synchronization component in the embodiments of this application.

[0030] Explanation of reference numerals in the attached diagram: 1. Cabinet; 11. Heat dissipation duct; 2. Power supply adjustment module; 3. Data detection module; 4. Signal processing module; 5. Enclosure mechanism; 51. Rotating motor; 52. Synchronization component; 521. Converter; 5211. Gear; 5212. Rack; 522. Drive frame; 523. Synchronization frame; 53. Enclosure plate; 6. Enclosure magnet; 7. Temperature detection module; 8. Cooling fan. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a soft-start control cabinet for a DC oil pump motor. (Refer to...) Figure 1 and Figure 2 The DC oil pump motor soft start control cabinet includes a cabinet 1, a power supply regulation module 2, a data detection module 3, and a signal processing module 4. The power supply regulation module 2 is used for electrical connection with the DC oil pump motor. Both the power supply regulation module 2 and the data detection module 3 are controlled by the signal processing module 4. The data detection module 3 is used to detect the current and voltage levels within the DC oil pump motor, and the signal processing module 4 is used to control the current input to the DC motor by the power supply regulation module 2 based on the data detected by the data detection module 3.

[0033] Reference Figure 2 In this embodiment, the power supply regulation module 2 includes a transformer, a rectifier, a filter, an EiceDRIVER chip and an IGBT (insulated gate bipolar transistor), the data detection module 3 is a Hall current sensor and a voltage sensor, and the signal processing module 4 is a digital signal processor (DSP).

[0034] Reference Figure 2 The transformer is electrically connected to an external AC power source and converts the external AC voltage to a suitable voltage. The input of the rectifier is electrically connected to the transformer and converts the AC power from the transformer into DC power. The output of the rectifier is electrically connected to a filter, which smooths the rectified DC power, thereby reducing voltage fluctuations and ripple. The output of the filter is electrically connected to the DC oil pump motor to power the DC oil pump motor.

[0035] Reference Figure 2The EiceDRIVER chip, IGBT, Hall current sensor, and voltage sensor are all electrically connected to the digital signal processor. The IGBT is connected to the circuitry within the DC oil pump motor via an H-bridge circuit. The Hall current sensor detects the current magnitude within the DC oil pump motor and feeds the detected current magnitude back to the digital signal processor. The voltage sensor detects the voltage magnitude within the DC oil pump motor and feeds the detected voltage magnitude back to the digital signal processor.

[0036] Reference Figure 2 The digital signal processor (DSP) receives the detected current and voltage values, and stores preset current and voltage values ​​within it. The DSP calculates the deviation between the actual detected data (current and voltage values) and the preset values, calculates the corresponding control quantity, generates a corresponding PWM signal, and sends this PWM signal to the EiceDRIVER chip.

[0037] Reference Figure 2 The EiceDRIVER chip is used to convert the PWM signal into the drive signal required by the IGBT, thereby controlling the IGBT to turn on or off. In turn, the IGBT controls the current and speed of the DC oil pump motor by adjusting its own on and off time ratio (i.e., duty cycle), thus achieving soft start of the DC oil pump motor.

[0038] Reference Figure 1 , Figure 3 and Figure 4 The cabinet 1 has heat dissipation slots 11 on both side walls along its length, and the internal chambers of the cabinet 1 are connected to the outside through the heat dissipation slots 11. The cabinet 1 also has a sealing mechanism 5. In this embodiment, there are two sealing mechanisms 5, each corresponding to one of the heat dissipation slots 11. Each sealing mechanism 5 includes a rotating motor 51, a synchronization component 52, and several sealing plates 53. In this embodiment, the rotating motor 51 is a servo motor.

[0039] Reference Figure 1 and Figure 4 The body of the rotating motor 51 is fixedly installed inside the cabinet 1 by bolts, and the output shaft extends along the width direction of the body. Each synchronization component 52 includes a conversion component 521, a drive frame 522 and several synchronization frames 523. Each conversion component 521 includes a gear 5211 and a rack 5212. The gear 5211 is fixedly sleeved on the output shaft of the rotating motor 51, and the rack 5212 is slidably connected to the cabinet 1 through a slide rail, and the sliding direction is the height direction of the cabinet 1, and all of them mesh with the corresponding gear 5211.

[0040] Reference Figure 1 and Figure 4 Each drive frame 522 is fixedly connected to a corresponding rack 5212 and slidably connected to the cabinet 1 via a slide rail, with the sliding direction being the height direction of the cabinet 1. Synchronizing frames 523 are arranged in a one-to-one correspondence with the sealing plates 53, and several synchronous frames 523 are equidistantly distributed along the length of the drive frame 522 and arranged in parallel. One end of each synchronous frame 523 is rotatably connected to the corresponding sealing plate 53 via a pin, and the other end is rotatably connected to the corresponding drive frame 522 via a pin.

[0041] Reference Figure 1 and Figure 4 Each sealing plate 53 is rotatably connected to the cabinet 1 via a pin. In every two adjacent sealing plates 53, the bottom of the upper sealing plate 53 near the rotating motor 51 and the top of the lower sealing plate 53 away from the rotating motor 51 are each provided with a sealing magnet 6. Each sealing magnet 6 is fixedly connected to the corresponding sealing plate 53 by adhesive. The sealing magnets 6 on adjacent sealing plates 53 are magnetically attracted to each other, so that the adjacent sealing plates 53 are connected end to end to increase the effect of the sealing plates 53 when closed.

[0042] Reference Figure 1 and Figure 4 In the initial state, when the sealing plate 53 closes the heat dissipation slot 11, the sealing magnets 6 on adjacent sealing plates 53 are magnetically attracted to each other, ensuring that the sealing plate 53 fully closes the heat dissipation slot 11. When the output shaft of the rotary motor 51 rotates, causing the rotary motor 51 to drive the gear 5211 to rotate, the gear 5211 causes the rack 5212 meshing with it to slide, which in turn causes the drive frame 522 to slide. The sliding of the drive frame 522 causes each corresponding synchronous frame 523 to shift, which in turn causes the synchronous frame 523 to drive the corresponding sealing plate 53 to rotate, thus opening the heat dissipation slot 11.

[0043] Reference Figure 1 , Figure 2 and Figure 3 The DC oil pump motor soft start control cabinet also includes a temperature detection module 7 and a cooling fan 8. In this embodiment, the temperature detection module 7 is a temperature sensor, which is fixedly installed inside the cavity of the cabinet 1. In this embodiment, the number of cooling fans 8 is set to two. Both cooling fans 8 are fixedly installed inside the cabinet 1 by bolts and are arranged one-to-one with the heat dissipation slots 11. The air outlet of each cooling fan 8 faces the heat dissipation slot 11.

[0044] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The temperature sensor, each cooling fan 8, and each rotating motor 51 are all electrically connected to the digital signal processor. The temperature sensor is used to detect the temperature inside the cabinet 1 and feeds back the detected temperature value to the digital signal processor, which receives the detected temperature value.

[0045] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The digital signal processor also stores a preset temperature value. The digital signal processor compares the detected temperature value with the preset temperature value. When the detected temperature value is greater than the preset temperature value, it controls each cooling fan 8 to work and the rotating motor 51 to work, so that the sealing plate 53 releases the sealing of the heat dissipation slot 11 and the cooling fan 8 exhausts the hot air in the cabinet 1 to the outside of the cabinet 1.

[0046] Reference Figure 1 , Figure 2 and Figure 3 The digital signal processor also pre-stores the correspondence between temperature values ​​and the rotation speed of the fan blades inside the cooling fan 8, so that the digital signal processor can adjust the rotation speed of the fan blades inside the cooling fan 8 based on the detected temperature value. This will increase the rotation speed of the fan blades inside the cooling fan 8 when the temperature inside the cabinet 1 is too high, thereby improving the heat dissipation effect.

[0047] Reference Figure 1 , Figure 2 and Figure 4 The digital signal processor also pre-stores the correspondence between temperature values ​​and the rotation angle of the rotor inside the rotating motor 51, so that the digital signal processor can adjust the rotation angle of the rotor inside the rotating motor 51 based on the detected temperature value, thereby adjusting the rotation angle of the sealing plate 53 and adjusting the opening size of the heat dissipation slot 11. Thus, when the temperature inside the cabinet 1 is too high, the rotation angle of the sealing plate 53 can be increased, increasing the opening size of the heat dissipation slot 11 and improving the heat dissipation effect.

[0048] The implementation principle of the DC oil pump motor soft start control cabinet in this application embodiment is as follows: The data detection module 3 can detect the current and voltage magnitudes in the oil pump motor in real time, so that the signal processing module 4 can control the current input to the DC motor by the power supply adjustment module 2 in real time based on the data detected by the data detection module 3, thereby regulating the speed of the DC oil pump motor and realizing the soft start of the DC oil pump motor. This achieves a smooth start of the DC oil pump motor, effectively reducing the probability of the starting current in the DC oil pump motor exceeding the rated current by many times in an instant, effectively reducing the current surge received by the DC oil pump motor, and thus effectively protecting the DC oil pump motor.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A DC oil pump motor soft start control cabinet, comprising a cabinet (1), characterized in that: It also includes a power supply adjustment module (2), a data detection module (3) and a signal processing module (4). The power supply adjustment module (2) is used to be electrically connected to the DC oil pump motor. Both the power supply adjustment module (2) and the data detection module (3) are controlled by the signal processing module (4). The data detection module (3) is used to detect the current and voltage in the DC oil pump motor. The signal processing module (4) is used to control the current input to the DC motor by the power supply adjustment module (2) based on the data detected by the data detection module (3).

2. The DC oil pump motor soft start control cabinet according to claim 1, characterized in that: The cabinet (1) has a heat dissipation groove (11) on its side wall, and the cavity inside the cabinet (1) is connected to the outside through the heat dissipation groove (11).

3. The DC oil pump motor soft start control cabinet according to claim 2, characterized in that: It also includes a temperature detection module (7) and a cooling fan (8), both of which are controlled by the signal processing module (4), and the air outlet of the cooling fan (8) faces the heat dissipation slot (11). The temperature detection module (7) is used to detect the temperature inside the cabinet (1), and the signal processing module (4) is used to control the opening and closing of the cooling fan (8) based on the detected temperature.

4. The DC oil pump motor soft start control cabinet according to claim 3, characterized in that: The cabinet (1) is also provided with a closing mechanism (5). The closing mechanism (5) includes a rotating motor (51), a synchronization component (52) and several closing plates (53). Several closing plates (53) are disposed in the heat dissipation groove (11) and distributed along the height direction of the heat dissipation groove (11). Each closing plate (53) is rotatably connected to the cabinet (1). The rotating motor (51) drives each closing plate (53) to rotate through the synchronization component (52) to close the heat dissipation groove (11).

5. The DC oil pump motor soft start control cabinet according to claim 4, characterized in that: The synchronization component (52) includes a conversion element (521), a drive frame (522), and several synchronization frames (523). The drive frame (522) is slidably connected to the cabinet (1). The synchronization frame (523) corresponds to the sealing plate (53). One end of each synchronization frame (523) is rotatably connected to the corresponding sealing plate (53), and the other end is rotatably connected to the drive frame (522). The rotating motor (51) drives the drive frame (522) to slide through the conversion element (521).

6. The DC oil pump motor soft start control cabinet according to claim 4, characterized in that: In two adjacent sealing plates (53), the side of the upper sealing plate (53) closer to the cooling fan (8) and the side of the lower sealing plate (53) away from the cooling fan (8) are both provided with sealing magnets (6), and the adjacent sealing magnets (6) are arranged in close contact.

7. The DC oil pump motor soft start control cabinet according to claim 4, characterized in that: The rotating motor (51) is controlled by the signal processing module (4), which controls the rotor rotation of the rotating motor (51) based on the temperature detected by the temperature detection module (7).

8. The DC oil pump motor soft start control cabinet according to claim 3, characterized in that: The cooling fan (8) is controlled by the signal processing module (4), which controls the rotation speed of the fan blades inside the cooling fan (8) based on the temperature detected by the temperature detection module (7).

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