Remote flushing system of circulating pump rotary filter screen

Abstract

The utility model discloses a remote flushing system for a circulating pump rotary filter screen, the remote flushing system comprises a flushing unit, a remote monitoring unit and a control unit, the flushing unit cleans the rotary filter screen, the remote monitoring unit monitors the cleaning completion condition of the rotary filter screen, the control unit can receive the monitoring information of the remote monitoring unit, and the remote monitoring unit sends the monitoring information to the remote monitoring unit. The start and stop of the flushing unit are controlled; the remote monitoring unit comprises a water level difference monitoring module and a visual monitoring module, and the water level difference monitoring module monitors the water level difference in front of and behind the rotary filter screen. The remote flushing system further comprises an impurity cleaning unit, and the impurity cleaning unit is used for cleaning impurities flushed out of the rotary filter screen. The visual monitoring module conducts visual monitoring on the impurity residue condition on the impurity cleaning unit and assists in judging the cleaning completion condition of the rotary filter screen. According to the utility model, the cleaning completion condition of the rotary filter screen can be accurately judged during remote flushing.

Description

Technical Field

[0001] The utility model relates to the field of circulating water systems in thermal power plants, in particular to a remote flushing system for a circulating pump rotating filter screen. Background Art

[0002] In recent years, China has vigorously advocated for energy conservation and emissions reduction in thermal power plants. The turbine cold end system is a crucial component of coal-fired units, primarily responsible for maintaining condenser vacuum. Condenser vacuum is closely related to circulating water flow. Rotary filters effectively remove trash, aquatic organisms, and other debris from the circulating water, preventing clogging of the condenser cooling water pipes, improving Rankine cycle efficiency, and reducing circulating pump power consumption.

[0003] To ensure the cleanliness of the rotary filter and circulating water, personnel are typically scheduled to flush and remove debris every eight hours. However, manual cleaning is labor-intensive, necessitating the development of a remotely controlled intelligent flushing system. Unlike manual cleaning, remote flushing requires no on-site personnel, making it difficult to determine the completeness of the rotary filter cleaning process. This presents a challenge. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a remote flushing system for a rotary filter screen with a circulating pump, which can accurately determine the cleaning completion status of the rotary filter screen during remote flushing.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a remote flushing system for a circulating pump rotary filter screen, and the remote flushing system includes a flushing unit, a remote monitoring unit and a control unit. The flushing unit cleans the rotary filter screen, and the remote monitoring unit monitors the cleaning completion of the rotary filter screen. The control unit can receive the monitoring information of the remote monitoring unit and control the start and stop of the flushing unit; the remote monitoring unit includes a water level difference monitoring module and a visual monitoring module. The water level difference monitoring module monitors the water level difference before and after the rotary filter screen.

[0006] Furthermore, the remote flushing system also includes a debris cleaning unit, which cleans the debris flushed out from the rotary filter; the visual monitoring module visually monitors the residual debris on the debris cleaning unit to assist in determining the completion of the cleaning of the rotary filter.

[0007] Furthermore, the debris cleaning unit includes a screen machine, which is arranged behind the rotary filter screen, and the washed debris flows to the screen machine along the water flow; the visual monitoring module visually monitors the residual debris on the screen machine.

[0008] Furthermore, the grille machine is a mesh type grille machine, and the output end of the grille machine is provided with an electric cleaning brush and a conveyor. The electric cleaning brush can brush off the debris at the output end of the grille machine, and the debris at the output end of the grille machine falls into the conveyor, and the conveyor sends the debris away.

[0009] Furthermore, the visual monitoring module includes at least two cameras; at least one camera is opposite to the mesh plate of the grille machine to monitor the residual debris on the grille machine; at least one camera is opposite to the conveyor to monitor the residual debris in the conveyor.

[0010] Furthermore, the water level difference monitoring module includes a front-net water level sensor arranged before the rotary filter screen and a rear-net water level sensor arranged after the rotary filter screen, and the control unit receives water level monitoring information from the front-net water level sensor and the rear-net water level sensor respectively.

[0011] Beneficial effects: The remote flushing system of the circulating pump rotary filter of the utility model judges the cleaning completion of the rotary filter by the water level difference before and after the rotary filter, and visually monitors the residual debris on the screen machine and the conveyor to assist in judging the cleaning completion of the rotary filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attachment Figure 1 This is a schematic diagram of the remote flushing system of the present invention. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] As attached Figure 1 The remote flushing system for the rotary filter screen with a circulating pump includes a flushing unit, a remote monitoring unit, and a control unit. The flushing unit includes a flushing pump, a flushing valve, a flushing head, etc., and is capable of cleaning the rotary filter screen 1. The remote monitoring unit can monitor the completion of the cleaning of the rotary filter screen 1.

[0015] The flushing equipment for the circulating pump rotary filter 1 is equipped with an on-site control box. The control unit, through software development, remotely controls all on-site equipment through the software's user interface. Furthermore, the control unit receives monitoring information from a remote monitoring unit and controls the start and stop of the flushing unit. In other words, when the control unit determines, based on the remote monitoring unit's monitoring information, that the rotary filter 1 has been cleaned, it can control the flushing unit to stop, preventing over-cleaning.

[0016] The remote monitoring unit includes a water level difference monitoring module and a visual monitoring module. The water level difference monitoring module monitors the water level difference before and after the rotary filter screen 1. Specifically, the water level difference monitoring module includes a pre-net water level sensor 6 arranged before the rotary filter screen 1 and a post-net water level sensor 7 arranged after the rotary filter screen 1. The control unit receives water level monitoring information from the pre-net water level sensor 6 and the post-net water level sensor 7 respectively. After adding the front and rear water level measurement of the circulating pump rotary filter screen 1, the control unit can accurately determine whether the rotary filter screen 1 is clean based on the front and rear water level difference, introduce this signal, and realize intelligent control.

[0017] The remote flushing system can operate in two modes as needed. The first is intelligent cleaning mode. When the water level difference increases, the control unit automatically activates the flushing unit to flush the rotating filter 1 until the water level difference returns to normal, ensuring that the rotating filter 1 is always clean. The second is regular cleaning mode. During regular flushing of the rotating filter 1, the pump can also control the flushing unit to stop according to the water level difference to avoid over-flushing and effectively ensure flushing efficiency.

[0018] The remote flushing system also includes a debris cleaning unit that cleans debris flushed from the rotary filter 1. A visual monitoring module visually monitors the amount of debris remaining on the debris cleaning unit, assisting in determining the completeness of the cleaning of the rotary filter 1. Specifically, the debris cleaning unit includes a screen machine 2, which is positioned behind the rotary filter 1. Flushed debris flows toward the screen machine 2 along the water flow, and the visual monitoring module visually monitors the amount of debris remaining on the screen machine 2.

[0019] The screen machine 2 is a mesh-type screen machine 2, which can more effectively separate small particles of debris from the water than a rake-tooth screen machine 2. The output end of the screen machine 2 is equipped with an electric cleaning brush 3 and a conveyor 4. The electric cleaning brush 3 can remove debris from the output end of the screen machine 2, and the debris at the output end of the screen machine 2 will fall into the conveyor 4, which then transports the debris to a fixed point. The conveyor 4 can be a conveyor belt or a screw conveyor 4. The combination of the screen machine 2, the electric cleaning brush 3, and the conveyor 4 enables the original manual cleaning process to be replaced with fully automatic mechanical cleaning, saving labor costs.

[0020] The visual monitoring module includes at least two cameras 5. At least one camera 5 faces the screen of the screen machine 2 to monitor the amount of debris remaining on the screen machine 2; at least one camera 5 faces the conveyor 4 to monitor the amount of debris remaining within the conveyor 4. The cameras 5 transmit video surveillance images to the control unit, allowing real-time monitoring of the amount of debris remaining within the screen machine 2 and conveyor 4, thereby better assisting in determining whether the rotary filter screen 1 is rinsed clean and providing secondary confirmation.

[0021] In summary, the utility model provides water level sensors before and after the rotary filter screen 1 to obtain the water level difference before and after the rotary filter screen 1, and judge the flushing completion of the rotary filter screen 1 according to the water level difference; in addition, at least two cameras 5 are provided to monitor the residual debris in the screen machine 2 and the conveyor 4 respectively, to assist in judging whether the rotary filter screen 1 is flushed clean.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. Remote flushing system of rotating filter screen with pump, characterized by: The remote flushing system comprises a flushing unit, a remote monitoring unit and a control unit. The flushing unit cleans the rotary filter (1). The remote monitoring unit monitors the completion of the cleaning of the rotary filter (1). The control unit can receive monitoring information from the remote monitoring unit and control the start and stop of the flushing unit. The remote monitoring unit comprises a water level difference monitoring module and a visual monitoring module. The water level difference monitoring module monitors the water level difference before and after the rotary filter (1).

2. The remote flushing system for the rotary filter screen with a circulating pump according to claim 1 is characterized in that: The remote flushing system further comprises a debris cleaning unit, which cleans debris flushed out from the rotary filter (1); the visual monitoring module visually monitors the residual debris on the debris cleaning unit to assist in determining whether the cleaning of the rotary filter (1) is complete.

3. The remote flushing system for the rotary filter screen with a circulating pump according to claim 2 is characterized in that: The debris cleaning unit comprises a screen machine (2), which is arranged behind the rotary filter (1), and the debris flushed out flows along the water flow to the screen machine (2); the visual monitoring module visually monitors the residual debris on the screen machine (2).

4. The remote flushing system for the rotary filter screen with a circulating pump according to claim 3 is characterized in that: The grid machine (2) is a mesh-type grid machine (2). An electric cleaning brush (3) and a conveyor (4) are provided at the output end of the grid machine (2). The electric cleaning brush (3) can brush off debris at the output end of the grid machine (2). The debris at the output end of the grid machine (2) correspondingly falls into the conveyor (4), and the conveyor (4) sends the debris away.

5. The remote flushing system for the rotary filter screen with a circulating pump according to claim 4 is characterized in that: The visual monitoring module includes at least two cameras (5); at least one camera (5) is opposite to the mesh plate of the grid machine (2) to monitor the residual state of debris on the grid machine (2); and at least one camera (5) is opposite to the conveyor (4) to monitor the residual state of debris in the conveyor (4).

6. The remote flushing system for a rotary filter screen with a circulating pump according to claim 1, characterized in that: The water level difference monitoring module comprises a front-net water level sensor (6) arranged before the rotary filter (1), and a rear-net water level sensor (7) arranged after the rotary filter (1); a control unit correspondingly receives water level monitoring information from the front-net water level sensor (6) and the rear-net water level sensor (7).

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