Automatic restart type premixing fan control system

Abstract

The invention discloses an automatic restart type premixing fan control system which comprises a power grid voltage monitoring module used for monitoring fluctuation of power grid voltage in real time, generating a power grid voltage abnormal signal when a fluctuation value of the power grid voltage exceeds a preset fluctuation range, and transmitting the power grid voltage abnormal signal to a control module and a self-locking start module; the self-locking starting module is used for receiving the power grid voltage abnormal signal, cutting off the running premixing fan according to the power grid voltage abnormal signal, automatically starting the premixing fan after the power grid voltage abnormal signal disappears, and automatically starting the premixing fan according to the setting of the control module; and any one of the premixing fans can be used for supplying energy to the production line. According to the automatic restart type premixing fan control system, the problem that the premixing fan suddenly shuts down due to power grid voltage fluctuation is solved, the risk of production interruption is reduced through the automatic restart function, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial automation, and in particular to an automatic restart type premixing fan control system. Background Art

[0002] At present, electric-driven premixing fans are widely used in industrial production, which are usually configured in a one-in-one and one-in-standby mode to ensure continuous production. However, when the grid voltage fluctuates briefly, the premixing fan may suddenly lose power and shut down, requiring manual restart. This not only increases the risk of production interruption, but may also cause gas pressure fluctuations in the pipeline, seriously affecting the stability and safety of the production process. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes an automatic restart type premixing fan control system.

[0004] The automatic restart premixing fan control system proposed by the present invention comprises:

[0005] The grid voltage monitoring module is used to monitor the fluctuation of the grid voltage in real time. When the fluctuation value of the grid voltage exceeds the preset fluctuation range, a grid voltage abnormality signal is generated and transmitted to the control module and the self-locking starting module;

[0006] A self-locking start module is used to receive a grid voltage abnormality signal and cut off the running premixing fan according to the grid voltage abnormality signal. When the grid voltage abnormality signal disappears, the premixing fan is automatically started. It is also used to automatically start the premixing fan according to the setting of the control module.

[0007] Multiple premixing fans, any of which can be used to supply energy to the production line. When a premixing fan is operating normally on the production line, it will be the main premixing fan, and the remaining premixing fans that are not in operation will be standby premixing fans.

[0008] A sequential association start module is used to monitor the use status of multiple premixing fans in real time. When the main premixing fan reaches a preset use period, a premixing fan switching signal is generated and transmitted to the control module. The premixing fan switching signal is also used to switch the use status of multiple premixing fans.

[0009] The control module is used to receive and record the abnormal grid voltage signal, and is also used to receive the premixing fan switching signal, and control the self-locking starting module to cut off the running premixing fan according to the premixing fan switching signal, and re-determine the main premixing fan. When the self-locking starting module completes the cutting work, the main premixing fan assigned by the sequential association starting module is associated, and then the premixing fan is automatically started by the self-locking starting module.

[0010] Preferably, it also includes: a premixing fan marking module, which is used to mark the application status of multiple premixing fans and construct an application status table so that each premixing fan corresponds to an application status; when the application status of any premixing fan is switched, the application status of the corresponding premixing fan in the application status table is updated, and the updated application status table is fed back to the control module, and the application status includes but is not limited to the main status, standby status, and suspended status.

[0011] Preferably, the control module is further used to determine the main premixing fan according to the application states corresponding to the multiple premixing fans in the application state table and a preset monitoring strategy.

[0012] Preferably, the preset monitoring strategy specifically includes:

[0013] Selecting a plurality of first-type premixing fans whose application status is a standby status from a plurality of premixing fans;

[0014] For the first type of premixing fans, the interval between the current time and the last application state switching time is calculated one by one;

[0015] The interval times corresponding to the plurality of first-type premixing fans are sorted in descending order, and the first-type premixing fan corresponding to the first-ranked interval time is used as the main premixing fan.

[0016] Preferably, the sequential association startup module specifically includes:

[0017] The monitoring unit is used to monitor the use status of multiple premixing fans in real time. When the main premixing fan reaches the preset use period, it generates a premixing fan switching signal and transmits the premixing fan switching signal to the control module.

[0018] Multiple switch units connected in parallel, each switch unit corresponds to a premixing fan;

[0019] The sequential association unit is used to associate any switch unit with the control module to achieve switching of the use status of multiple premixing fans.

[0020] Preferably, it also includes: a pressure detection module, which is used to detect the gas pressure fluctuation value in the pipeline and compare the gas pressure fluctuation value with a preset threshold value. When the gas pressure fluctuation value exceeds the preset threshold value, a trigger signal is output to the control module.

[0021] Preferably, the control module is further configured to re-determine the main premixing fan according to the trigger signal, the application status table and the preset monitoring strategy when the gas pressure fluctuation value exceeds a preset threshold value.

[0022] Preferably, the control module is further used to transmit the acquired status information of the multiple premixing fans to the terminal in real time.

[0023] In the present invention, the proposed automatic restart premixing fan control system, when the fluctuation value of the grid voltage exceeds the preset fluctuation range, the self-locking start module cuts off the running premixing fan according to the abnormal grid voltage signal, and automatically starts the premixing fan when the abnormal grid voltage signal disappears; when the main premixing fan reaches the preset use cycle, a premixing fan switching signal is generated, and the premixing fan switching signal is transmitted to the control module, and the control module controls the self-locking start module to cut off the running premixing fan according to the received premixing fan switching signal, and re-determines the main premixing fan at the same time; when the gas pressure fluctuation value in the pipeline exceeds the preset threshold, the pressure detection module outputs a trigger signal to the control module, and the control module re-determines the main premixing fan according to the trigger signal, the application status table and the preset monitoring strategy. The problem of sudden shutdown of the premixing fan caused by grid voltage fluctuation is solved, and the risk of production interruption is reduced and the production efficiency is improved through the automatic restart function. The large fluctuation of gas pressure in the pipeline caused by the shutdown of the premixing fan is avoided, the occurrence of production abnormalities is reduced, and the stability and safety of the production process are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the system architecture of the automatic restart premixing fan control system proposed by the present invention;

[0025] Figure 2 This is a structural schematic diagram of a sequential associated starting module of the automatic restart premixing fan control system proposed by the present invention. DETAILED DESCRIPTION

[0026] Reference Figure 1 and Figure 2 The automatic restart premixing fan control system proposed by the present invention comprises:

[0027] The grid voltage monitoring module is used to monitor the fluctuation of the grid voltage in real time. When the fluctuation value of the grid voltage exceeds the preset fluctuation range, a grid voltage abnormality signal is generated and transmitted to the control module and the self-locking starting module.

[0028] In this embodiment, whether to cut off the premixing fan is determined in real time according to the fluctuation value of the grid voltage, so that when the grid voltage is abnormal, the premixing fan and the production line are protected in time to improve the safety of production.

[0029] The self-locking starting module is used to receive the grid voltage abnormality signal and cut off the running premixing fan according to the grid voltage abnormality signal. When the grid voltage abnormality signal disappears, the premixing fan is automatically started. It is also used to automatically start the premixing fan according to the setting of the control module.

[0030] In this embodiment, the setting of the self-locking starting module facilitates the self-starting of the equipment when the grid voltage is restored, thereby facilitating timely resumption of production. At the same time, the premixing fan can be switched and controlled according to demand to ensure the continuity of the production process.

[0031] There are multiple premixing fans, any of which can be used to supply energy to the production line. When a premixing fan operates normally on the production line, the premixing fan is the main premixing fan, and the remaining premixing fans that are not in operation are all standby premixing fans.

[0032] The sequential association start-up module is used to monitor the usage status of multiple premixing fans in real time. When the main premixing fan reaches the preset usage cycle, a premixing fan switching signal is generated and transmitted to the control module. It is also used to switch the usage status of multiple premixing fans.

[0033] In this embodiment, the sequential association startup module specifically includes:

[0034] The monitoring unit is used to monitor the use status of multiple premixing fans in real time. When the main premixing fan reaches the preset use period, it generates a premixing fan switching signal and transmits the premixing fan switching signal to the control module.

[0035] Multiple switch units connected in parallel, each switch unit corresponds to a premixing fan;

[0036] The sequential association unit is used to associate any switch unit with the control module to achieve switching of the use status of multiple premixing fans.

[0037] In this embodiment, it also includes: a premixing fan marking module, which is used to mark the application status of multiple premixing fans and construct an application status table so that each premixing fan corresponds to an application status; when the application status of any premixing fan is switched, the application status of the corresponding premixing fan in the application status table is updated, and the updated application status table is fed back to the control module, and the application status includes but is not limited to the main status, the standby status, and the suspended status.

[0038] The control module is used to receive and record the abnormal grid voltage signal, and is also used to receive the premixing fan switching signal, and control the self-locking starting module to cut off the running premixing fan according to the premixing fan switching signal, and re-determine the main premixing fan. When the self-locking starting module completes the cutting work, the main premixing fan assigned by the sequential association starting module is associated, and then the premixing fan is automatically started by the self-locking starting module.

[0039] In this embodiment, the control module is further used to determine the main premixing fan according to the application states corresponding to the multiple premixing fans in the application state table and the preset monitoring strategy.

[0040] In this embodiment, the control module is also used to re-determine the main premixing fan according to the trigger signal, the application status table and the preset monitoring strategy when the gas pressure fluctuation value exceeds the preset threshold.

[0041] In this embodiment, the control module is further used to transmit the acquired status information of the multiple premixing fans to the terminal in real time.

[0042] In this embodiment, the preset monitoring strategy specifically includes:

[0043] Selecting a plurality of first-type premixing fans whose application status is a standby status from a plurality of premixing fans;

[0044] For the first type of premixing fans, the interval between the current time and the last application state switching time is calculated one by one;

[0045] The interval times corresponding to the plurality of first-type premixing fans are sorted in descending order, and the first-type premixing fan corresponding to the first-ranked interval time is used as the main premixing fan.

[0046] In this embodiment, it also includes: a pressure detection module, which is used to detect the gas pressure fluctuation value in the pipeline and compare the gas pressure fluctuation value with a preset threshold value. When the gas pressure fluctuation value exceeds the preset threshold value, a trigger signal is output to the control module.

[0047] In this embodiment, the preset threshold value can be adjusted as needed to adjust the trigger condition to adapt to different production environments and requirements.

[0048] In this embodiment, the output end of the sequential association starting module is electrically connected to multiple premixing fans in a one-to-one correspondence, the output end of the sequential association starting module is electrically connected to the input end of the control module, and the input end of the sequential association starting module is electrically connected to the output end of the control module; the output end of the grid voltage monitoring module is electrically connected to the input end of the self-locking starting module, the output end of the grid voltage monitoring module is electrically connected to the input end of the control module, and the input end of the self-locking starting module is electrically connected to the output end of the control module; the output end of the self-locking starting module is electrically connected to the input end of the control module; the input end of the premixing fan marking module is electrically connected to the output end of the control module, the output end of the premixing fan marking module is electrically connected to the input end of the control module, and the output end of the pressure detection module is electrically connected to the input end of the control module.

[0049] During the specific working process of the automatic restart premixing fan control system of this embodiment, when the fluctuation value of the grid voltage exceeds the preset fluctuation range, the self-locking starting module cuts off the running premixing fan according to the grid voltage abnormal signal, and automatically starts the premixing fan when the grid voltage abnormal signal disappears; when the main premixing fan reaches the preset usage cycle, a premixing fan switching signal is generated, and the premixing fan switching signal is transmitted to the control module, and the control module controls the self-locking starting module to cut off the running premixing fan according to the received premixing fan switching signal, and redetermines the main premixing fan at the same time; when the gas pressure fluctuation value in the pipeline exceeds the preset threshold value, the pressure detection module outputs a trigger signal to the control module, and the control module redetermines the main premixing fan according to the trigger signal, the application status table and the preset monitoring strategy.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Automatic restart premixing fan control system, It is characterized in that include: The grid voltage monitoring module is used to monitor the fluctuation of the grid voltage in real time. When the fluctuation value of the grid voltage exceeds the preset fluctuation range, a grid voltage abnormality signal is generated and transmitted to the control module and the self-locking starting module; A self-locking start module is used to receive a grid voltage abnormality signal and cut off the running premixing fan according to the grid voltage abnormality signal. When the grid voltage abnormality signal disappears, the premixing fan is automatically started. It is also used to automatically start the premixing fan according to the setting of the control module. Multiple premixing fans, any of which can be used to supply energy to the production line. When a premixing fan is operating normally on the production line, it will be the main premixing fan, and the remaining premixing fans that are not in operation will be standby premixing fans. A sequential association start module is used to monitor the use status of multiple premixing fans in real time. When the main premixing fan reaches a preset use period, a premixing fan switching signal is generated and transmitted to the control module. The premixing fan switching signal is also used to switch the use status of multiple premixing fans. The control module is used to receive and record the abnormal grid voltage signal, and is also used to receive the premixing fan switching signal, and control the self-locking starting module to cut off the running premixing fan according to the premixing fan switching signal, and re-determine the main premixing fan. When the self-locking starting module completes the cutting work, the main premixing fan assigned by the sequential association starting module is associated, and then the premixing fan is automatically started by the self-locking starting module.

2. The automatic restart premixing fan control system according to claim 1, It is characterized in that Also includes: A premixing fan marking module is used to mark the application status of multiple premixing fans and construct an application status table so that each premixing fan corresponds to an application status; When the application state of any premixing fan is switched, the application state of the corresponding premixing fan in the application state table is updated, and the updated application state table is fed back to the control module. The application state includes but is not limited to the main state, standby state, and suspended state.

3. The automatic restart premixing fan control system according to claim 2, It is characterized in that The control module is also used to determine the main premixing fan according to the application status corresponding to the multiple premixing fans in the application status table and the preset monitoring strategy.

4. The automatic restart premixing fan control system according to claim 3, It is characterized in that The preset monitoring strategy specifically includes: Selecting a plurality of first-type premixing fans whose application status is a standby status from a plurality of premixing fans; For the first type of premixing fans, the interval between the current time and the last application state switching time is calculated one by one; The interval times corresponding to the plurality of first-type premixing fans are sorted in descending order, and the first-type premixing fan corresponding to the first-ranked interval time is used as the main premixing fan.

5. The automatic restart premixing fan control system according to claim 1, It is characterized in that The sequential association startup module specifically includes: The monitoring unit is used to monitor the use status of multiple premixing fans in real time. When the main premixing fan reaches the preset use period, it generates a premixing fan switching signal and transmits the premixing fan switching signal to the control module. Multiple switch units connected in parallel, each switch unit corresponds to a premixing fan; The sequential association unit is used to associate any switch unit with the control module to achieve switching of the use status of multiple premixing fans.

6. The automatic restart premixing fan control system according to claim 4, It is characterized in that Also includes: The pressure detection module is used to detect the gas pressure fluctuation value in the pipeline and compare the gas pressure fluctuation value with a preset threshold value. When the gas pressure fluctuation value exceeds the preset threshold value, a trigger signal is output to the control module.

7. The automatic restart premixing fan control system according to claim 6, It is characterized in that The control module is also used to re-determine the main premixing fan according to the trigger signal, the application status table and the preset monitoring strategy when the gas pressure fluctuation value exceeds the preset threshold.

8. The automatic restart premixing fan control system according to claim 6, It is characterized in that The control module is also used to transmit the acquired status information of multiple premixing fans to the terminal in real time.

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