An ultra-quiet container type diesel engine set EC fan automatic control system

Abstract

The utility model provides an ultra -quiet container type diesel engine unit EC fan automation control system relates to fan equipment technical field, including diesel generator and diesel engine, diesel generator and diesel engine mechanical connection, engine group controller, engine group controller and diesel engine electric connection are used for monitoring engine operation state, main circuit breaker switch, main circuit breaker switch's output and diesel generator's output electric connection, main circuit breaker switch's input connects load, power supply main switch, power supply main switch's input and main circuit breaker switch's output electric connection, control box, control box's power input and power supply main switch's output electric connection, EC cooling fan, EC cooling fan and control box's output electric connection, through each element in control box coordination operation, ensure that EC cooling fan adjusts wind speed as needed, high -efficient heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine equipment technology, and more specifically, it relates to an automated control system for an ultra-quiet containerized diesel engine set EC wind turbine. Background Technology

[0002] In the field of diesel engine water tank cooling control technology, most existing cooling control methods rely on three-phase asynchronous motors. This traditional control method mainly involves controlling the start and stop of the three-phase asynchronous motor through the diesel generator set, thereby driving the fan to cool the water tank. Although this control method is relatively mature, its operation has several problems. First, traditional three-phase asynchronous motors consume a large amount of starting current, which puts a significant strain on the power grid and equipment, while also increasing energy consumption and reducing energy efficiency. Second, due to the large power loss of the motor, it cannot achieve high energy efficiency. Third, the motor's start-up process is often uneven, which may lead to equipment vibration and wear. Finally, the motor generates considerable noise during operation, especially in applications requiring a quiet environment, where this drawback is more pronounced.

[0003] These issues not only limit the applicability of diesel engine sets but also affect their performance in specific scenarios. For example, in fields such as hospitals, data centers, and aerospace, where the operating environment requirements for equipment are extremely stringent, a more efficient, low-noise, and stable heat dissipation control technology is needed to replace the traditional three-phase asynchronous motor control scheme.

[0004] Therefore, finding a new heat dissipation control technology is particularly necessary to solve the above problems. The new technology should be able to reduce starting current, decrease grid impact and equipment energy consumption; improve energy utilization efficiency and reduce power loss; improve start-up smoothness and reduce equipment vibration and wear; reduce operating noise and adapt to a wider range of application scenarios. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model aims to solve the problems of high starting current, high power loss, high noise and low control accuracy of the existing diesel engine cooling control system, and provide an EC fan automatic control system with high automation, good quiet effect and low energy consumption.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an automated control system for an EC fan in an ultra-quiet containerized diesel engine set, comprising: a diesel generator and a diesel engine, the diesel generator and the diesel engine being mechanically connected; an engine set controller, the engine set controller being electrically connected to the diesel engine for monitoring the engine's operating status; a main circuit breaker switch, the output terminal of the main circuit breaker switch being electrically connected to the output terminal of the diesel generator, and the input terminal of the main circuit breaker switch being connected to a load; a main power supply switch, the input terminal of the main power supply switch being electrically connected to the output terminal of the main circuit breaker switch; a control box, the power input terminal of the control box being electrically connected to the output terminal of the main power supply switch; an EC cooling fan, the EC cooling fan being electrically connected to the output terminal of the control box; and a water temperature sensor. The device includes a water temperature sensor installed at the inlet and outlet pipes of the diesel engine's water tank and electrically connected to the control box. The control box integrates a main power switch, a main power AC contactor, power switches for each fan, a PLC touchscreen, a temperature display, an emergency stop button, indicator lights, and control circuitry. The input terminal of the main power switch is electrically connected to the main power switch. The coil terminal of the main power AC contactor is electrically connected to the main power switch. The input terminals of each fan power switch are electrically connected to the main contacts of the main power AC contactor. The signal input terminal of the PLC touchscreen is electrically connected to the water temperature sensor. The control output terminals of the PLC touchscreen are electrically connected to each fan power switch, temperature display, emergency stop button, and indicator lights.

[0008] According to one embodiment of this utility model, the PLC touch screen integrates a PLC control module and a touch screen display module. The PLC control module has a built-in temperature threshold setting module, a speed threshold setting module, and a mode switching module for switching between automatic control mode and manual control mode. The PLC control module is used to receive the temperature signal from the water temperature sensor and output PWM speed regulation signal to the power switches of each fan. The touch screen display module is used to display the water tank temperature and fan speed in real time.

[0009] According to one embodiment of the present invention, the power input terminal of the EC cooling fan is electrically connected to the fan power switch, and it integrates an electronic commutation circuit and a speed control chip. The speed control chip communicates bidirectionally with the PLC touch screen through an RS485 communication interface to receive speed adjustment commands and provide feedback on the operating status.

[0010] According to one embodiment of the present invention, the water temperature sensor is a PT100 platinum resistance sensor, and its signal output terminal is electrically connected to the analog input port of the PLC touch screen through a shielded twisted pair cable, which is used to convert the water temperature signal into a change in resistance value and transmit it to the PLC control module.

[0011] According to one embodiment of the present invention, an intermediate relay is provided in the control box. The coil end of the intermediate relay is electrically connected to the control output end of the PLC touch screen, and its contact end is connected in series with the coil circuit of the main power AC contactor to amplify the output signal of the PLC control module.

[0012] According to one embodiment of the present invention, the main power switch, the main power switch and each fan power switch constitute a fan power supply group. The main power supply of the fan power supply group is directly supplied by a diesel generator. The fan power supply group is electrically isolated from the load circuit.

[0013] According to one embodiment of this utility model, it also includes a remote monitoring terminal. The PLC touch screen is equipped with a background communication interface. The background communication interface supports the MODBUS protocol and is used for bidirectional communication with the remote monitoring terminal to realize the uploading of EC cooling fan operation data and the reception of remote control commands.

[0014] According to one embodiment of the present invention, the main power supply switch adopts an NXB125-4P type circuit breaker, the main power supply AC contactor adopts an NC1-8011Z / DC24V type contactor, and each of the fan power switches adopts an NXB-63D6A type circuit breaker. The rated current of the trip unit of the circuit breaker is matched and set according to the rated power of the EC cooling fan.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. In this solution, after the engine group controller detects the status of the diesel engine, it sets and monitors the temperature signal obtained by the water temperature sensor through the PLC touch screen. When the temperature exceeds the set threshold, the PLC control module sends a command to the power switch of each fan. Through the coordinated operation of each component in the control box, the EC cooling fan adjusts the wind speed as needed to achieve efficient heat dissipation, thereby ensuring the diesel engine operates at low temperature and high efficiency. This system has a high degree of automation, good noise reduction, and low energy consumption.

[0017] 2. In this solution, the use of EC cooling fans improves operating efficiency and reliability. In traditional mechanical commutation methods, wear on the brushes and commutator gradually leads to poor contact, affecting motor performance and even causing malfunctions. EC cooling fans, however, have electronic commutation, eliminating the need for physical contact, reducing wear, extending fan lifespan, and lowering maintenance costs. Simultaneously, this system can monitor motor status in real time and make fine adjustments, ensuring stable fan operation under various conditions, further improving the performance and reliability of the entire diesel engine set. Furthermore, the entire system achieves data upload and remote control via a remote monitoring terminal, enhancing system intelligence and energy efficiency.

[0018] 3. In this solution, the EC cooling fan starts smoothly and runs stably. During operation, the friction between the fan blades and the air, as well as the overall vibration of the fan, are relatively small. Furthermore, this system can intelligently adjust the speed and power output of the EC cooling fan according to actual needs, ensuring efficient operation under various working conditions and greatly reducing energy consumption. This not only conforms to the current trend of green and environmentally friendly development but also brings significant economic benefits to enterprise users. Attached Figure Description

[0019] Figure 1 This is a top view of the EC fan automatic control system of the ultra-quiet containerized diesel engine set of this utility model;

[0020] Figure 2 This is a front view of the EC fan automatic control system of the ultra-quiet containerized diesel engine set of this utility model;

[0021] Figure 3 This is a schematic diagram of the automated control system for the EC fan of the ultra-quiet containerized diesel engine set of this utility model;

[0022] Figure 4 This is a front view of the control box of this utility model;

[0023] Figure 5 This is a rear view of the control box of this utility model.

[0024] Attached reference numerals: 1. EC cooling fan; 101. Electronic commutation circuit; 102. Speed ​​control chip; 2. Control box; 201. PLC touch screen; 202. Emergency stop button; 203. Indicator light; 204. Intermediate relay; 205. Fan power switch; 206. Main power AC contactor; 207. Temperature display; 3. Main power switch; 4. Main circuit breaker switch; 5. Water temperature sensor; 6. Diesel engine; 7. Diesel generator; 8. Engine set controller; 9. Housing. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 and 2As shown in the figure, this embodiment discloses an automated control system for a 6-unit EC fan of an ultra-quiet containerized diesel engine. The system includes a diesel generator 7 and a diesel engine 6, an engine group controller 8, a main circuit breaker switch 4, a main power supply switch 3, a control box 2, an EC cooling fan 1, and a water temperature sensor 5. In this embodiment, the diesel generator 7 and the diesel engine 6 are mechanically connected, that is, the diesel engine 6 drives the diesel generator 7 to rotate, so that the diesel generator 7 works; the engine group controller 8 is electrically connected to the diesel engine 6, and the engine group controller 8 is used to monitor the engine's operating status; the main circuit breaker switch 4 is electrically connected to the output terminal of the diesel generator 7; the input terminal of the main power supply switch 3 is electrically connected to the output terminal of the main circuit breaker switch 4; the power input terminal of the control box 2 is electrically connected to the output terminal of the main power supply switch 3; the EC cooling fan 1 is electrically connected to the output terminal of the control box 2; the water temperature sensor 5 is installed at the inlet and outlet water pipes of the water tank of the diesel engine 6, and the water temperature sensor 5 is electrically connected to the control box 2. In this embodiment, a total of 8 fans are used, of which 6 are installed on the top of the housing 9 and above the diesel generator 7 and the diesel engine 6, and the remaining 2 are installed on the side of the housing 9 near the diesel engine 6.

[0027] Among them, such as Figure 4 and 5 As shown, the control box 2 integrates a main power switch, a main power AC contactor 206, power switches 205 for each fan, a PLC touch screen 201, a temperature display 207, an emergency stop button 202, indicator lights 203, and control circuitry. The input terminal of the main power switch is electrically connected to the main power switch 3. The coil terminal of the main power AC contactor 206 is electrically connected to the main power switch. The input terminal of each fan power switch 205 is electrically connected to the main contact of the main power AC contactor 206. The signal input terminal of the PLC touch screen 201 is electrically connected to the water temperature sensor 5. The control output terminal of the PLC touch screen 201 is electrically connected to each fan power switch 205, temperature display 207, emergency stop button 202, and indicator lights 203, respectively.

[0028] Furthermore, the PLC touchscreen 201 integrates a PLC control module and a touchscreen display module. The PLC touchscreen 201 can use an ES2 series PLC. In this embodiment, the PLC control module implements temperature threshold setting logic, speed threshold setting logic, and mode switching logic through programming, all of which are existing technologies. Specifically, the temperature threshold setting logic receives and processes engine temperature control parameters input by the user; the speed threshold setting logic determines the upper and lower limits of the fan speed; and the mode switching logic controls the PLC to execute an automatic PID speed regulation program or a manual speed adjustment program based on the operation instructions. The PLC control module receives the temperature signal from the water temperature sensor 5 and outputs PWM speed regulation signals to the power switches 205 of each fan; the touchscreen display module displays the water tank temperature and fan speed in real time. Next, the control box 2 establishes communication with the EC cooling fan 1 through the PLC touchscreen 201. In automatic control mode, the PLC control module can directly control the fan speed based on the water tank inlet and outlet temperature feedback signals of the engine assembly. Users can set the upper and lower limits of temperature and speed on the PLC touch screen 201. The system will automatically adjust the speed of EC cooling fan 1 based on the set values ​​and real-time water temperature to achieve automated control. In manual control mode, users can manually input the speed of EC cooling fan 1.

[0029] Furthermore, the PLC touchscreen 201, serving as the system's control center, not only displays real-time data from the water temperature sensor 5 but also controls the power switches 205 of each fan according to preset temperature control logic, enabling intelligent start-stop of the EC cooling fan 1. When the water temperature exceeds a set threshold, the PLC touchscreen 201 automatically activates more EC cooling fans 1 to enhance heat dissipation and prevent engine overheating; conversely, when the water temperature drops to a safe range, the number of operating fans is reduced to achieve energy saving and consumption reduction. The temperature display 207 intuitively displays the current water tank temperature, allowing operators to monitor the engine's thermal status at any time. The emergency stop button 202 provides a means to quickly cut off power in emergencies, ensuring the safety of personnel and equipment. The indicator lights 203 use different colors or flashing patterns to indicate the system's operating status and alarm information, making the system's operating status readily apparent.

[0030] like Figure 3 As shown, the power input terminal of the EC cooling fan 1 is electrically connected to the fan power switch 205. Internally, it integrates an electronic commutation circuit 101 and a speed control chip 102. The speed control chip 102 communicates bidirectionally with the PLC touchscreen 201 via an RS485 communication interface to receive speed adjustment commands and provide feedback on the operating status. The EC cooling fan 1 is a commercially available product; its specific structure will not be described in detail.

[0031] Furthermore, the water temperature sensor 5 is a PT100 platinum resistance sensor. Its signal output terminal is electrically connected to the analog input port of the PLC touch screen 201 via a shielded twisted pair cable, used to convert the water temperature signal into a resistance value change and transmit it to the PLC control module. An intermediate relay 204 is installed inside the control box 2. The coil terminal of the intermediate relay 204 is electrically connected to the control output terminal of the PLC touch screen 201, and its contact terminal is connected in series with the coil circuit of the main power AC contactor 206, used to amplify the output signal of the PLC control module. The main power switch 3, the main power switch, and the power switches 205 of each fan constitute the fan power supply group. The main power supply of the fan power supply group is directly supplied by the diesel generator 7, and the fan power supply group is electrically isolated from the load circuit. That is, the diesel generator 7 supplies electrical power to the fan power supply group and the load circuit separately, ensuring the stability of the power supply to the EC cooling fan.

[0032] To better monitor the system's operation, this system also includes a remote monitoring terminal. The PLC touch screen 201 is equipped with a background communication interface. The background communication interface communicates bidirectionally with the remote monitoring terminal via the MODBUS protocol, enabling the uploading of operating data of the EC cooling fan 1 and the reception of remote control commands.

[0033] In addition, in this embodiment, the main power supply switch adopts an NXB125-4P type circuit breaker, the main power supply AC contactor 206 adopts an NC1-8011Z / DC24V type contactor, and the power switches 205 of each fan adopt NXB-63D6A type circuit breakers. The rated current of the trip unit of the circuit breaker is matched and set according to the rated power of EC cooling fan 1.

[0034] In summary, the EC fan automated control system for the ultra-quiet containerized diesel engine set in this embodiment, by integrating advanced PLC control modules, touch screen display modules, and intelligent sensors, achieves precise temperature control of the engine set and intelligent start-stop of the fan. Furthermore, the inclusion of remote monitoring and self-diagnostic functions further enhances the system's reliability and maintainability. This system not only boasts excellent heat dissipation performance but also a high level of automation and intelligence, providing strong support for the stable operation of the diesel engine set.

[0035] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automated control system for an ultra-quiet containerized diesel engine set EC fan, comprising a housing (9), characterized in that, include: The diesel generator (7) and the diesel engine (6) are both installed in the housing (9), and the diesel generator (7) and the diesel engine (6) are mechanically connected. Engine group controller (8), which is electrically connected to diesel engine (6) and is used to monitor engine operating status; The main circuit breaker switch (4) is electrically connected to the output terminal of the diesel generator (7), and the input terminal of the main circuit breaker switch (4) is connected to the load. The main power supply switch (3) is electrically connected to the output terminal of the main circuit breaker switch (4). The control box (2) is located inside the box (9), and the power input terminal of the control box (2) is electrically connected to the output terminal of the power supply main switch (3); EC cooling fan (1), wherein the EC cooling fan (1) is electrically connected to the output terminal of the control box (2); Water temperature sensor (5), the water temperature sensor (5) is installed at the water tank inlet and outlet pipes of the diesel engine (6) and is electrically connected to the control box (2); The control box (2) integrates a main power switch, a main power AC contactor (206), power switches (205) for each fan, a PLC touch screen (201), a temperature display (207), an emergency stop button (202), an indicator light (203), and a control circuit. The input terminal of the main power switch is electrically connected to the main power switch (3). The coil terminal of the main power AC contactor (206) is electrically connected to the main power switch. The input terminal of each fan power switch (205) is electrically connected to the main contact of the main power AC contactor (206). The signal input terminal of the PLC touch screen (201) is electrically connected to the water temperature sensor (5). The control output terminal of the PLC touch screen (201) is electrically connected to each fan power switch (205), the temperature display (207), the emergency stop button (202), and the indicator light (203).

2. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 1, characterized in that, The PLC touch screen (201) integrates a PLC control module and a touch screen display module. The PLC control module is equipped with temperature threshold setting logic, speed threshold setting logic and mode switching logic. The PLC control module is used to receive the temperature signal from the water temperature sensor (5) and output PWM speed regulation signal to each fan power switch (205). The touch screen display module is used to display the water tank temperature and fan speed in real time.

3. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 2, characterized in that, The power input terminal of the EC cooling fan (1) is electrically connected to the fan power switch (205). It integrates an electronic commutation circuit (101) and a speed control chip (102). The speed control chip (102) communicates bidirectionally with the PLC touch screen (201) through an RS485 communication interface to receive speed adjustment commands and provide feedback on the operating status.

4. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 3, characterized in that, The water temperature sensor (5) is a PT100 platinum resistance sensor. Its signal output terminal is electrically connected to the analog input port of the PLC touch screen (201) through a shielded twisted pair cable. It is used to convert the water temperature signal into a change in resistance value and transmit it to the PLC control module.

5. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 4, characterized in that, The control box (2) is equipped with an intermediate relay (204). The coil end of the intermediate relay (204) is electrically connected to the control output end of the PLC touch screen (201), and its contact end is connected in series with the coil circuit of the main power AC contactor (206) to amplify the output signal of the PLC control module.

6. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 5, characterized in that, The main power switch (3), the main power switch and each fan power switch (205) constitute the fan power supply group. The main power supply of the fan power supply group is directly supplied by the diesel generator (7). The fan power supply group is electrically isolated from the load circuit.

7. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 1 or 2, characterized in that, It also includes a remote monitoring terminal. The PLC touch screen (201) is equipped with a background communication interface. The background communication interface supports the MODBUS protocol and is used for bidirectional communication with the remote monitoring terminal to realize the uploading of EC cooling fan (1) operation data and the reception of remote control commands.

8. The automated control system for an ultra-quiet containerized diesel engine set EC fan according to claim 6, characterized in that, The main power supply switch adopts an NXB125-4P type circuit breaker, the main power supply AC contactor (206) adopts an NC1-8011 Z / DC24V type contactor, and each of the fan power switches (205) adopts an NXB-63D6A type circuit breaker. The rated current of the trip unit of the circuit breaker is set according to the rated power of the EC cooling fan (1).

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