Motor control device of underwater submersible
By identifying the voltage frequency through a frequency relay detection module, the motor control circuit is automatically adjusted, which solves the problems of unstable motor operation and inverter interference at different frequencies, and realizes efficient operation and extended life of the motor at the appropriate frequency.
Patent Information
- Application Number
- CN202422955552.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Under different national standard AC frequencies, the performance and lifespan of underwater motors are affected, and frequency converters have problems such as high power consumption and communication interference under high voltage environments.
A frequency relay detection module is used to identify the voltage frequency and automatically connect the most suitable motor control circuit. Through the combination of power supply module, input transformer module, detection module, action control module, output transformer module and motor power supply module, the motor is ensured to work at the appropriate frequency and avoids frequency converter interference.
This enables motors of different frequencies to operate at appropriate frequencies, reduces the impact of frequency converters on circuits and communications, extends motor life, and improves working efficiency.
Smart Images
Figure CN223829186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to underwater intelligent detection equipment field, concretely relates to a motor control device of underwater robot for underwater detection. BACKGROUND
[0002] It is known that with the development of production technology and the increasing progress of science and technology, the application of underwater intelligent equipment technology has become more and more extensive, and the technical requirements of underwater intelligent detection equipment are also increasingly updated, so the motor for underwater intelligent detection equipment is also an essential component of the underwater detector during normal operation, the current common two mainstream alternating current frequencies are 50HZ and 60HZ, when the frequency of alternating current and the rated frequency of alternating current motor are not equal, it will produce adverse factors affecting the performance and service life of the motor, although there are frequency converters on the market that can be used to change the frequency of the output voltage, but using a frequency converter in a 3KV and above high voltage environment still has problems such as large power of the frequency converter itself, frequency converter communication and signal interference, if the voltage frequency is not changed, when the motor rated frequency and power frequency are inconsistent, it will shorten the service life of the motor and affect the efficiency of the motor, at the same time, the power of the high voltage frequency converter itself is very large, if the voltage frequency is not changed, the large frequency converter will consume extra electricity, and may interfere with communication, therefore, in the case where the voltage frequency does not need to be changed, the frequency converter can not be used, and the transformer can be directly powered, since the motor is used underwater, the temperature underwater is low, so the heat generated during electricity consumption will also exchange with the low temperature seawater, so there is no risk of overheating, therefore, based on the phenomenon that alternating current frequencies are different in different countries and the principle of frequency relay, a motor control device based on frequency relay can be designed, when the voltage frequency does not need to be adjusted, the frequency converter does not work, which can reduce the influence of the frequency converter on the circuit and communication. SUMMARY
[0003] Therefore, the utility model aims at providing a simple and reliable motor control device based on frequency relay, which enables motors of different frequencies to work at appropriate frequencies and reduces the influence of the frequency converter on the circuit and communication.
[0004] To achieve the objective of this utility model, a motor control device for an underwater submersible is provided, comprising a workboat body, a submersible body, and a motor control mechanism. Both the submersible body and the motor control mechanism are mounted on the workboat body. The workboat body has a motor mounting position, and the motor control mechanism is mounted on this mounting position. The submersible body includes a motor unit, which is mounted on the submersible body via a mounting frame. The motor control mechanism is electrically connected to the motor unit. The motor control mechanism includes a power supply module, an input transformer module, a detection module, an action control module, and an output transformer. The system includes a power supply module and a motor power supply module. The power supply module is used to input voltage to the input transformer module. The detection module is used to detect whether the voltage on the input transformer module is at the rated AC frequency. In one state, the voltage enters the frequency conversion circuit; in another state, it connects to the output transformer module for voltage output. The action control module is used to control the action of the voltage passing through the detection module. The output transformer module is used to output a suitable working voltage to enable the motor power supply module to work. Each of the power supply module, input transformer module, detection module, action control module, output transformer module, and motor power supply module is electrically connected in sequence.
[0005] Preferably, the motor device includes a sealed housing and a motor module body, the motor module body being housed within the sealed housing, and the motor module body being electrically connected to the motor control mechanism.
[0006] Preferably, the power supply module is a marine electrical input system module, which is a 690-700V voltage system.
[0007] Preferably, the detection module includes a frequency relay detection module, wherein the rated detection voltage range of the frequency relay detection module is 50-60Hz.
[0008] Preferably, the input transformer module is a transformer input transformer module, which is connected to the frequency relay detection module.
[0009] Preferably, the action control module includes a frequency relay action corresponding control circuit, and the corresponding control circuit is equipped with the frequency conversion circuit. When the frequency voltage is not the rated AC frequency, the frequency conversion circuit of the corresponding control circuit is entered. When the AC frequency is the rated AC frequency, the frequency relay detection module does not operate and the corresponding control circuit is connected.
[0010] Preferably, the contacts of the frequency relay detection module have two states: one state is a normally open contact closed state, and the other state is a normally closed contact open state. When the frequency voltage is not the rated AC frequency, the frequency relay will open the contacts to enter one state or the other state.
[0011] Preferably, the output transformer module is a transformer output voltage module, which, after being connected to the frequency relay detection module, outputs the working voltage for the motor to operate.
[0012] Preferably, the motor power supply module is connected to the transformer output voltage module. When the transformer output voltage module directly outputs a suitable working voltage to the motor power supply module, the transformer input voltage module and the transformer output voltage module are in a direct connected state.
[0013] The beneficial effects of this utility model are as follows: This utility model provides a motor control device for an underwater submersible. It includes a motor device body comprising a sealed housing and a motor module body. The motor module body is housed within the sealed housing. The motor module body includes a power supply module, an input transformer module, a detection module, an action control module, an output transformer module, and a motor power supply module. The detection module includes a frequency relay detection module. The motor control device provided by this utility model is simple and reliable. Based on the phenomenon of different AC frequencies according to different national standards and the principle of frequency relays, a frequency relay is used as the voltage detection module. When the voltage frequency does not require frequency adjustment, the frequency converter does not work, reducing the impact of the frequency converter on the circuit and communication. By identifying the voltage frequency through the frequency relay, the most suitable motor control circuit is automatically connected, enabling motors of different frequencies to operate at the appropriate frequency, maximizing performance without affecting the motor's lifespan. Attached Figure Description
[0014] The above and other objects, features, and advantages of the invention will become clearer through a more detailed description of the preferred embodiments illustrated in the accompanying drawings. The same reference numerals denote the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.
[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the motor control device for the underwater submersible of this utility model;
[0016] Figure 2 This is a schematic diagram of the main body of the underwater submersible in the motor control device of the present invention;
[0017] Figure 3 This is a schematic diagram of an embodiment of the motor control device for the underwater submersible of this utility model;
[0018] Figure 4 This is a schematic diagram of the circuit principle of the motor control device of the underwater submersible of this utility model.
[0019] In the diagram: 1. Submersible body; 10. Workboat body; 11. Motor mounting position; 2. Motor unit; 20. Motor control mechanism; 3. Mounting frame; 4. Control circuit. Detailed Implementation
[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used herein are for illustrative purposes only.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this applies. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0022] like Figures 1-4 As shown, an embodiment of this utility model provides a motor control device for an underwater submersible, including a workboat body 10, a submersible body 1, and a motor control mechanism 20. The submersible body 1 and the motor control mechanism 20 are both mounted on the workboat body. The workboat body 10 is provided with a motor mounting position 11, and the motor control mechanism 20 is mounted on the mounting position. The submersible body includes a motor device 2, which is mounted on the submersible body 1 through a mounting frame 3. The motor control mechanism 20 is electrically connected to the motor device 2. The motor control mechanism 20 includes a power supply module, an input transformer module, a detection module, an action control module, an output transformer module, and a motor power supply module. The power supply module supplies power to the motor on the workboat body, i.e., the power supply to the boat. The motor module body connects to the motor on the boat body to control the AC frequency.
[0023] The power supply module is used to input voltage to the input transformer module, and the detection module is used to detect whether the voltage on the input transformer module is the rated voltage. In one state, it enters the frequency converter circuit, and in the other state, it connects to the output transformer module to output voltage.
[0024] The motion control module is used to control the action of the voltage after passing through the detection module; the output transformer module is used to output a suitable working voltage to enable the motor power supply module to work.
[0025] The power supply module, input transformer module, detection module, motion control module, output transformer module, and motor power supply module are each electrically connected in sequence.
[0026] refer to Figures 1-4As shown, in a preferred embodiment, the power supply module is a ship electrical input system module, which supplies power to the motors on the ship's hull. The ship electrical input system module uses a voltage system of 690-700V. In this embodiment, the power supply that the motor module body needs to connect to is generally the 690V power supply for the motors on the ship's hull.
[0027] refer to Figures 1-4 As shown, in a preferred embodiment, the detection module includes a frequency relay detection module. Based on an electrical component detection circuit with a frequency relay as the main component, it includes a frequency relay coil. The model of the frequency relay can be specifically set according to the parameters required in the specific implementation. The rated detection AC frequency range of the frequency relay detection module is 50-60Hz. Specifically, in this embodiment, if 60Hz is set as the standard operating AC frequency, the rated frequency of the motor can be set to 55Hz. If 50Hz is set as the standard operating AC frequency, the rated frequency of the motor can be set to 48Hz or 49Hz. The settable range can be 48-52Hz, because the voltage frequency may fluctuate slightly; the adjustable range is set according to the rated operating frequency of the motor.
[0028] refer to Figures 1-4 As shown, in a preferred embodiment, the input transformer module is a transformer input transformer module connected to the frequency relay detection module. The transformer input transformer module includes an input transformer. If the motor voltage input through the input transformer is 690V, then the equivalent output voltage after passing through the input transformer is 220V. The voltage output by the motor powered from the hull is reduced to 220V by the transformer input transformer module. After the voltage reduction, the voltage is then checked by the frequency relay detection module to see if it is within the set voltage range.
[0029] refer to Figures 1-4 As shown, in a preferred embodiment, the action control module includes a frequency relay action corresponding control circuit 4. The corresponding control circuit 4 is equipped with a frequency converter circuit. When the frequency voltage is not the rated AC frequency, it enters the frequency converter circuit of the corresponding control circuit. When the frequency voltage is the rated AC frequency, the frequency relay detection module does not operate, and the corresponding control circuit 4 is connected. The corresponding control circuit 4 has normally open contact circuits and normally closed contact circuits. Specifically, in this embodiment, if the normal operating frequency is set to 60HZ, when the AC frequency is 50HZ, the frequency relay operates, the 220V frequency converter is connected to the circuit in the action control module and outputs a 60HZ AC frequency, which is then output as a 3KV motor operating voltage through the output transformer module. If the AC frequency is 60HZ, the operation of the frequency relay is to connect the normally closed contact control circuit 4, directly connect the transformer output module to output voltage, and output the voltage to the motor power supply module.
[0030] refer toFigures 1-4 As shown, in a preferred embodiment, the contacts of the frequency relay detection module have two states: one state is a normally open contact closed state, and the other state is a normally closed contact open state. When the frequency voltage is not the rated AC frequency, the frequency relay detection module will open the contacts to enter one state or the other state. Specifically, in the embodiment, that is, when the motor is running in normal operating condition, such as setting the normal operating frequency to 60 Hz, if the AC frequency is less than 60 Hz, the frequency relay will operate, and the contacts of the frequency relay will be in the normally closed contact open state. If the AC frequency is greater than 60 Hz, the state of the operating contacts will switch, connecting the frequency converter to change the voltage frequency, switching to a suitable AC frequency for operation. By identifying the AC frequency through the frequency relay, the most suitable motor control circuit is automatically connected, so that motors of different frequencies can operate at the appropriate AC frequency.
[0031] refer to Figures 1-4 As shown, in a further preferred embodiment, the output transformer module is a transformer output voltage module, that is, an output transformer. For example, a 220V voltage input is equivalent to a 3000V output after passing through the output transformer. After the transformer output voltage module is connected to the frequency relay detection module, it outputs a suitable working AC frequency for the motor to work, so that motors of different frequencies can work at a suitable AC frequency.
[0032] refer to Figures 1-4 In a preferred embodiment, the motor power supply module is connected to the transformer output voltage module. When the transformer output voltage module directly outputs a suitable working AC frequency to the motor power supply module, the transformer input voltage module and the transformer output voltage module are directly connected. At this time, the frequency relay is also in the normally closed contact state. The motor device on the submersible body can be installed in the installation position inside the submersible body or outside the body, and can be installed through the installation frame. The installation position can be selected according to the power consumption.
[0033] Furthermore, according to the illustration Figures 1-4 As shown in the figure, a specific embodiment of this utility model also provides a motor control method for an underwater submersible, including a motor control device, specifically including the following steps:
[0034] S1. The voltage input to the work vessel is stepped down through a transformer input module;
[0035] S2. Use the detection module to check whether the input voltage is at the rated AC frequency;
[0036] S3. The detected AC frequency enters the action control module to perform actions and switch circuits.
[0037] S4. The AC frequency input / output transformer module of the motion control module is then output to the main motor device of the submersible for power supply.
[0038] In step S1, an input transformer is used to step down the input ship hull power supply voltage. In a specific embodiment, the specific normal operating AC frequency is first set, and the detection voltage range of the frequency relay is set according to the motor model in the specific implementation.
[0039] In step S2, if the voltage detected in step input S1 is the rated AC frequency, then proceed to step S4; if the AC frequency detected in step input S1 is a non-rated AC frequency, then proceed to step S3. Specifically, if the motor is in normal operating condition, such as a normal operating frequency of 60Hz: 1) If the AC frequency is 60Hz, the frequency relay operates by connecting the normally closed contact control circuit control module, directly connecting the transformer output module to output voltage to the motor power supply module; 2) If the AC frequency is less than 60Hz, the frequency relay will operate, and the normally closed contact of the frequency relay will be open. If the voltage frequency is greater than 60Hz, the state of the operating contact will switch, connecting the frequency converter to change the AC frequency, switching to a suitable frequency for operation. By identifying the voltage frequency through the frequency relay, the most suitable motor control circuit is automatically connected, so that motors of different frequencies can operate at the appropriate frequency.
[0040] refer to Figures 3-4 Figures 1-4 In a preferred embodiment, the detection module is a frequency relay, and the motor control device is the motor control device provided in any of the above preferred embodiments.
[0041] The beneficial effects of this utility model are as follows: This utility model provides a motor control device for an underwater submersible, which includes a motor device body. The motor device body includes a sealed shell and a motor module body. The motor module body is placed inside the sealed shell. The motor module body includes a power supply module, an input transformer module, a detection module, an action control module, an output transformer module, and a motor power supply module. The detection module includes a frequency relay detection module. The motor control device provided by this utility model is simple and reliable. Based on the phenomenon that the AC frequency of different national standards is different and the principle of frequency relay, a frequency relay is used as the voltage detection module. When the voltage frequency does not need to be adjusted, the frequency converter does not work, which can reduce the impact of the frequency converter on the circuit and communication. By identifying the voltage frequency through the frequency relay, the most suitable motor control circuit is automatically connected, so that motors of different frequencies can work at the appropriate frequency, exert their performance without affecting the life of the motor.
[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0043] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0044] The above embodiments only illustrate several implementation methods of the invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the invention, and these all fall within the protection scope of the invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A motor control device for an underwater submersible, comprising a workboat body, a submersible body, and a motor control mechanism, wherein the submersible body and the motor control mechanism are both mounted on the workboat body, the workboat body has a motor mounting position, the motor control mechanism is mounted on the mounting position, the submersible body includes a motor device, the motor device is mounted on the submersible body via a mounting frame, and the motor control mechanism is electrically connected to the motor device, characterized in that: The motor control mechanism includes a power supply module, an input transformer module, a detection module, an action control module, an output transformer module, and a motor power supply module. The power supply module is used to input voltage to the input transformer module. The detection module is used to detect whether the voltage on the input transformer module is at the rated AC frequency. In one state, the voltage enters the frequency converter circuit; in another state, it connects to the output transformer module for voltage output. The action control module is used to control the action of the voltage passing through the detection module. The output transformer module is used to output a suitable working voltage to enable the motor power supply module to operate. Each of the power supply module, input transformer module, detection module, action control module, output transformer module, and motor power supply module is electrically connected in sequence. The motor power supply module is connected to the transformer output voltage module. When the transformer output voltage module directly outputs a suitable working voltage to the motor power supply module, the transformer input voltage module and the transformer output voltage module are in a direct connected state.
2. The motor control device for an underwater submersible according to claim 1, characterized in that, The motor device includes a sealed housing and a motor module body. The motor module body is housed inside the sealed housing and is electrically connected to the motor control mechanism.
3. The motor control device for an underwater submersible according to claim 1, characterized in that, The power supply module is a marine electrical input system module, which is a 690-700V voltage system.
4. The motor control device for an underwater submersible according to claim 1, characterized in that, The detection module includes a frequency relay detection module, which is equipped with a frequency relay coil. The rated detection voltage range of the frequency relay detection module is 50-60Hz.
5. The motor control device for an underwater submersible according to claim 1, characterized in that, The input transformer module is a transformer input transformer module, which is connected to the frequency relay detection module.
6. The motor control device for an underwater submersible according to claim 1, characterized in that, The action control module includes a frequency relay action corresponding control circuit. The corresponding control circuit is equipped with the frequency conversion circuit. When the AC frequency is not the rated AC frequency, the frequency conversion circuit of the corresponding control circuit is activated. When the frequency voltage is the rated AC frequency, the frequency relay detection module does not activate and the corresponding control circuit is connected.
7. The motor control device for an underwater submersible according to claim 5, characterized in that, The contacts of the frequency relay detection module have two states: one state is that the normally open contacts are closed, and the other state is that the normally closed contacts are open. When the frequency voltage is not the rated AC frequency, the frequency relay detection module will open the contacts to enter one state or the other state.
8. The motor control device for an underwater submersible according to claim 1, characterized in that, The output transformer module is a transformer output voltage module. After the transformer output voltage module is connected to the frequency relay detection module, it outputs the working voltage for the motor to work.