Double-fan main and standby automatic selection device for rectifying device

Abstract

The utility model discloses a double-fan main / standby automatic selection device for a rectifying device, which is suitable for rectifying devices of all generator static excitation systems. Comprising an analog quantity input module, a digital quantity input module, a controller and a digital quantity output module. The device collects fan parameters and states through the analog quantity input module and the digital quantity input module, the controller achieves main and standby selection and fault switching of the fan, and starting, stopping and switching of the fan are controlled through the digital quantity output module. And due to the modular design, all the components are connected simply and conveniently. The device automatically monitors the operation parameters and the operation state of the draught fan, an intelligent control strategy is adopted, and the operation stability and reliability of the system are improved.

Description

Technical Field

[0001] The utility model relates to a rectifier device of a generator excitation system, in particular to a dual-fan main and standby automatic selection device for the rectifier device. Background Art

[0002] The rectifier is an important component of the synchronous generator excitation system, and the cooling fan is a key component of the device. Its main function is to maintain the appropriate temperature of the rectifier during long-term operation, thereby preventing the rectifier from overheating and causing performance degradation or damage.

[0003] To control the temperature of rectifiers, current rectifiers all use a dual-fan design with a primary and backup fan. This design primarily utilizes a cold standby configuration. When the rectifier is operating normally, the primary fan operates while the backup fan does not. If the primary fan fails or the temperature is too high, the backup fan automatically switches to operation. However, prolonged operation of the primary fan can lead to excessive noise, high temperatures, and excessive energy consumption. Summary of the Invention

[0004] The utility model aims to disclose a dual-fan main-standby automatic selection device which has simple structure, strong anti-interference ability and convenient use and is applied to a rectifier device.

[0005] The technical solution adopted in this utility model is:

[0006] The dual-fan main-standby automatic selection device for the rectifier device consists of an analog input module, a digital input module, a controller and a digital output module. The analog input module and the digital input module are respectively connected to the input end of the controller, and the output end of the controller is connected to the digital output module.

[0007] In the above-mentioned dual-fan master-standby automatic selection device for the rectifier device, the data of the analog input module is input to the controller, the data of the digital input module is input to the controller, the data of the controller is transmitted to the digital output module, and the digital output module outputs the final control signal.

[0008] The characteristics of this utility model are:

[0009] 1. The dual-fan main and standby automatic selection device of the utility model has a simple structure and strong versatility.

[0010] 2. The controller logic automatically realizes the main and standby automatic selection and automatic switching of the fan, reducing the uncertainty of manual operation, thereby improving the service life and reliability of the fan.

[0011] 3. The utility model adopts an intelligent control strategy, which can adopt the optimal main and standby selection and switching scheme according to the monitored fan operating status and operating parameters to improve the system operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the hardware structure diagram of the dual-fan main and standby automatic selection device for the rectifier device.

[0013] Explanation of the numbers in the figure: 1-analog input module, 2-digital input module, 3-controller, 4-digital output module. DETAILED DESCRIPTION

[0014] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0015] according to Figure 1 As shown, the dual-fan main-standby automatic selection device for the rectifier device is composed of an analog input module 1, a digital input module 2, a controller 3 and a digital output module 4.

[0016] The analog input module 1 and the digital input module 2 are respectively connected to the input terminals of the controller 3 , and the output terminal of the controller 3 is connected to the digital output module 4 .

[0017] The analog input module 1 of the rectifier's dual-fan automatic primary / standby selection device collects operating parameters such as fan temperature, pressure, speed, and current. The digital input module 2 collects information about the fan's start / stop and fault status. Analog input module 1 and digital input module 2 transmit this information to controller 3, which combines this information with its own records of the fan's primary / standby status during shutdowns and the fan's operating duration. Controller 3 then conducts a comprehensive analysis, selects the optimal control strategy, and sends instructions to digital output module 4 to control the start, stop, and switching of the rectifier panel's dual fans.

[0018] This utility model is a dual-fan automatic selection device for a rectifier. This device features a simple structure and strong practicality. It automatically monitors the operating status of the primary and backup fans, automatically selects the primary and backup fans, and automatically switches between them. This eliminates the need for human intervention and reduces the uncertainty of manual operation. Data analysis can identify potential fan faults, allowing appropriate measures to prevent further failures. The intelligent control strategy improves the operating efficiency of the rectifier and extends the fan's service life. It can be applied to rectifiers in all generator static excitation systems.

[0019] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood based on specific circumstances.

[0020] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A dual-fan main / standby automatic selection device for a rectifier, characterized by: The system is composed of an analog input module (1), a digital input module (2), a controller (3), and a digital output module (4). The analog input module (1) and the digital input module (2) are respectively connected to the input end of the controller (3), and the output end of the controller (3) is connected to the digital output module (4).

2. The dual-fan main / standby automatic selection device for a rectifier according to claim 1, characterized in that: The data of the analog input module (1) is input to the controller (3), the data of the digital input module (2) is input to the controller (3), the data of the controller (3) is transmitted to the digital output module (4), and the digital output module (4) outputs a final control signal.

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