Remote monitoring system for cleaning water in dust removal equipment

Abstract

To provide a cleaning water remote monitoring system of a dust collector which can remotely monitor clogging of a strainer for cleaning water and a cleaning nozzle.SOLUTION: A cleaning water remote monitoring system 10 of a dust collector includes: a cleaning water supply part 20 which cleans a screen 4 of a dust collector; and a remote control device 40 which monitors the cleaning water supply part 20 through a communication part 60. The cleaning water supply part has: a cleaning water supply pump 22 and a cleaning water main pipe 24; a strainer 26 which is disposed in the main pipe and removes refuse; a first pressure sensor 28 which detects a water pressure of the main pipe; a cleaning spray 30 which sprays cleaning water to the screen; a cleaning water branch pipe 32; and a second pressure sensor 34 which detects a water pressure of the branch pipe. The communication part has: first communication means 62 which transmits detection values of the pressure sensors; and second communication means 64 which receives the detection values of the pressure sensors from the first communication means. The remote control device includes a display part 42 which displays the detection values of the pressure sensors.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a remote monitoring system for cleaning water used to clean the screen of a dust removal device that removes foreign matter such as dust from water when water is taken from the sea or river or when water is purified. [Background technology]

[0002] In power plants such as thermal power plants, water intakes are installed to use water from rivers and the sea as cooling water. However, the water taken in can contain debris and aquatic organisms, so it cannot be used as is. For this reason, dust removal equipment is installed at the water intake plants to capture debris and aquatic organisms in the water. The dust removal equipment is positioned across the width of the intake channel, either perpendicular to the water flow or at an angle to it. In power plants and other facilities with large water intake volumes, a continuously rotating rotary screen is used, which rotates a screen equipped with wire mesh to continuously capture foreign objects such as dust and pull them up to the surface.

[0003] Figure 4 is an explanatory diagram of a dust remover. As shown in the figure, the dust remover 1 rotates a pair of endless carrying chains 2 from a drive unit via upper, lower, left, and right sprocket wheels, and a screen 4 made of wire mesh attached to the carrying chain 2 is attached so as to cross the water intake channel. The upper sprocket wheel (not shown) is located in a housing 5 on the ground, and the lower sprocket wheel 3B is located on the bottom of the water channel. The left and right sprocket wheels are installed so that the water intake channel is sandwiched between the pair of upper and lower sprocket wheels, and rotating shafts (head shaft and tail shaft) are provided between the left and right sprocket wheels so as to cross the water channel.

[0004] Typically, two rotary screens are installed, one upstream and one downstream. The upstream rotary screen uses a bar screen to capture coarse debris, while the downstream rotary screen uses a sieve to capture fine debris. When the amount of dust adhering to the screen increases, the passing water flow places an excessive load on the screen, reducing the amount of water downstream. Conventionally, there is a technique for detecting the difference in water level between the upstream and downstream sides of the screen when dust has adhered to the screen, and then spraying cleaning water onto the screen with a cleaning spray or driving a drive means for circulating the screen to remove the dust adhering to the screen (see, for example, Patent Document 1).

[0005] The cleaning spray that sprays cleaning water onto the screen mentioned above is connected to a cleaning water supply pump that draws cleaning water used to clean the screen from the water intake channel downstream of the dust removal device, and to the cleaning water main pipe. The cleaning water main pipe is equipped with a strainer (filter) that removes fine dust particles contained in the cleaning water that cannot be captured by the dust removal device. Strainers and cleaning sprays can become clogged after long periods of operation. Therefore, in the past, a pressure gauge was installed in the cleaning water main pipe, and the pressure gauge or facility equipment was visually checked during regular inspections. This type of on-site inspection work was a major burden on the operation of the facility. Furthermore, conventional cleaning sprayers spray cleaning water at a constant pressure and flow regardless of the amount of dust adhering to the screen, which means that when the amount of dust is small, the cleaning spray sprays excessive, unnecessary cleaning water. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-63890 Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the problems of the prior art described above, the problem to be solved by the present invention is to provide a cleaning water remote monitoring system for a dust removal device that can remotely monitor clogging of cleaning water strainers and cleaning nozzles. Another object of the present invention is to provide a remote monitoring system for cleaning water in a dust removal device that can efficiently clean a screen. [Means for solving the problem]

[0008] As a first means for solving the above problems, the present invention provides a cleaning water remote monitoring system for a dust remover, which includes a cleaning water supply unit that cleans a screen of the dust remover, and a remote control device that remotely monitors the cleaning water supply unit via a communication unit, The cleaning water supply unit a main cleaning water pipe connected to a cleaning water supply pump that draws cleaning water from the intake channel; a strainer disposed in the main cleaning water pipe for removing dust from the cleaning water; The water pressure of the main cleaning water pipe Detects clogging of the strainer a first pressure sensor for detecting a cleaning spray that sprays the cleaning water onto the screen; a cleaning water branch pipe that branches off from the cleaning water main pipe and connects to the cleaning spray; The water pressure of the cleaning water branch pipe Detects clogging of the cleaning spray a second pressure sensor for detecting The communication unit a first communication means for transmitting the detected values ​​of the first and second pressure sensors to the remote control device; and a second communication means provided in the remote control device for receiving the detected values ​​of the first and second pressure sensors from the first communication means, The remote control device is a display unit that displays the detected values ​​of the first and second pressure sensors; and, A set value is set for when the strainer and cleaning spray become clogged, and an alarm is set to sound when the detected values ​​of the first and second pressure sensors approach or exceed the set value. The present invention provides a remote monitoring system for cleaning water of a dust removal device, comprising: According to the first means, clogging of the strainer for cleaning water and the cleaning spray can be monitored remotely without visiting the site, thereby reducing the burden of inspection work.

[0009] As a second means for solving the above problems, the present invention provides a method for manufacturing a semiconductor device according to the first means, The screen bucket is photographed with a camera and processed by an image recognition program.a dust sensor for detecting the amount of dust adhering to the screen; The object of the present invention is to provide a remote monitoring system for cleaning water for a dust removal device, characterized in that the remote control device is equipped with a control unit that receives the detection value of the dust sensor and controls the amount of cleaning water supplied to the cleaning water supply pump to increase or decrease depending on the amount of dust. According to the second means, the amount of cleaning water in the cleaning spray is controlled in accordance with the amount of dust, so that energy for supplying cleaning water can be saved and cleaning can be performed efficiently.

[0010] The present invention provides, as a third means for solving the above problems, the first means, The screen is attached to a drive unit that rotates and moves the screen. Equipped with a speed sensor that detects the rotation speed of the screen, The object of the present invention is to provide a remote monitoring system for cleaning water for a dust removal device, characterized in that the remote control device is equipped with a control unit that receives the detection value of the speed sensor and controls the amount of cleaning water supplied to the cleaning water supply pump to be increased or decreased depending on the rotational speed. According to the third means, the amount of washing water in the washing spray is controlled in accordance with the rotation speed of the screen, so that energy for supplying washing water is saved and washing can be performed efficiently. [Effects of the Invention]

[0011] According to the present invention, clogging of strainers for cleaning water and cleaning sprays can be monitored remotely without visiting the site, thereby reducing the burden of inspection work. Furthermore, the amount of washing water sprayed is controlled according to the amount of dust or the rotation speed of the screen, so energy required for supplying washing water can be saved and washing can be performed efficiently. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic diagram illustrating the configuration of a cleaning water remote monitoring system for a dust removal device according to a first embodiment. [Figure 2] FIG. 10 is a schematic diagram illustrating the configuration of a cleaning water remote monitoring system for a dust removal device according to a second embodiment. [Figure 3]FIG. 10 is a schematic diagram illustrating the configuration of a cleaning water remote monitoring system for a dust removal device according to a third embodiment. [Figure 4] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a remote monitoring system for cleaning water in a dust removal device according to the present invention will be described in detail below with reference to the drawings.

[0014] [Remote monitoring system for cleaning water in dust removal equipment] (Example 1) Remote monitoring 1 is a schematic diagram of the configuration of a remote monitoring system for cleaning water for a dust remover according to Example 1. As shown in the figure, the remote monitoring system for cleaning water for a dust remover 10 of the present invention is equipped with a cleaning water supply unit 20 for cleaning a screen 4 of the dust remover 1, and a remote control device 40 for remotely monitoring the cleaning water supply unit 20 via a communication unit 60. The cleaning water supply unit 20 includes a cleaning water main pipe 24 connected to a cleaning water supply pump 22 for drawing cleaning water from a water intake channel, a strainer 26 disposed in the cleaning water main pipe 24 for removing dust in the cleaning water, a first pressure sensor 28 for detecting the water pressure of the cleaning water main pipe 24, and a cleaning water supply unit 40 for spraying the cleaning water onto the screen 4. The cleaning spray 30 has a cleaning water branch pipe 32 that branches off from the main cleaning water pipe 24 and connects to the cleaning spray 30, and a second pressure sensor 34 that detects the water pressure of the cleaning water branch pipe 32, and the communication unit 60 has a first communication means 62 that transmits the detected values ​​of the first and second pressure sensors 28, 34 to the remote control device 40, and a second communication means 64 that is provided in the remote control device 40 and receives the detected values ​​of the first and second pressure sensors 28, 34 from the first communication means 62, and the remote control device 40 is equipped with a display unit 42 that displays the detected values ​​of the first and second pressure sensors 28, 34.

[0015] The cleaning water supply unit 20 is configured to supply cleaning water to a cleaning spray 30 that sprays cleaning water onto the screen 4 of the dust remover 1 to clean it. The cleaning water is pumped up by a cleaning water supply pump 22 from a water intake channel downstream of the dust remover 1. A cleaning water main pipe 24 is connected to the cleaning water supply pump 22. The cleaning water main pipe 24 is connected to cleaning water branch pipes 32 that branch off so that cleaning water can be supplied to the cleaning nozzles of multiple dust removers 1. The cleaning water flowing through the cleaning water main pipe 24 contains fine dust particles that cannot be captured by the screen 4 of the dust removal device 1. For this reason, the cleaning water main pipe 24 is provided with a strainer (filter) 26 to capture this dust. The cleaning water main pipe 24 is also fitted with a first pressure sensor 28 that detects clogging of the strainer 26. The first pressure sensor 28 is fitted to the cleaning water main pipe 24 between the strainer 26 and the cleaning water branch pipe 32. The first pressure sensor 28 detects the water pressure in the pipe to which it is fitted and can detect clogging of the strainer 26.

[0016] The cleaning water branch pipe 32 branches off from the cleaning water main pipe 24 and is connected to the cleaning spray 30 at the end. A second pressure sensor 34 is attached to the cleaning water branch pipe 32 to detect clogging of the cleaning spray 30. The second pressure sensor 34 can detect clogging of the cleaning spray 30 by detecting the water pressure in the pipe to which it is attached. The communication section 60 comprises a first communication means 62 attached to the cleaning water supply section 20 side and a second communication means 64 attached to the remote control device 40 side. The first communication means 62 is configured to be able to transmit the detected values ​​of the first and second pressure sensors 28 and 34 to the second communication means 64 . The second communication means 64 is configured to be able to receive the detection values ​​of the first and second pressure sensors 28, 34 from the first communication means 62. The remote control device 40 is a personal computer (PC) that is installed at a location remote from the dust removal device 1 and has an information processing device and a storage device, and is equipped with a display unit . The display unit 42 is a monitor that can display the detected values ​​of the first and second pressure sensors 28, 34, for example, as a list. According to the cleaning water remote monitoring system 10 for the dust removal device of Example 1, by displaying the detected values ​​of the first and second pressure sensors 28, 34, it is possible to remotely monitor whether the strainer 26 of the main cleaning water pipe 24 is clogged and whether the cleaning spray 30 is clogged. In addition, a preset value can be set in advance for when the strainer 26 and cleaning spray 30 become clogged, and an alarm can be set to sound when the detected values ​​of the first and second pressure sensors 28, 34 approach or exceed the set value.

[0017] (Example 2) Amount of dust 2 is a schematic diagram of the configuration of a remote monitoring system for cleaning water for a dust remover according to Example 2. As shown in the figure, the remote monitoring system for cleaning water for a dust remover according to Example 2 10A includes a dust sensor 50 that detects the amount of dust adhering to the screen 4, and the remote operation device 40 includes a control unit 44 that receives the detection value of the dust sensor 50 and controls the amount of cleaning water supplied to the cleaning water supply pump 22 to increase or decrease depending on the amount of dust. The dust sensor 50 is a sensor that detects the amount of dust adhering to the screen 4. More specifically, the dust sensor may be configured with at least one of a sensor that detects the current value of a drive device (drive motor) that rotates the screen, a camera that photographs the screen bucket, and a water level sensor installed in front of or behind the screen. The sensor that measures the current value of the screen's drive motor can detect the current value that fluctuates when dust adheres to the screen and the load is applied during rotation. For this reason, a preset current value is set according to the amount of dust adhering to the screen, and the amount of dust can be determined from a constant change in the current value. The image captured by the camera photographing the screen bucket section can be used to determine the amount of dust using an image recognition processing program. Water level sensors placed before and after the screen can detect the difference in water level that occurs before and after the screen when dust adheres to the screen. For this reason, a preset value for the water level difference is set in advance according to the amount of dust adhering to the screen, and the amount of dust can be determined by a constant change in the water level difference. The first communication means 62 is configured to be able to transmit the detection value of the dust sensor 50 to the second communication means 64 . The second communication means 64 is configured to be able to receive the detection value of the dust sensor 50 from the first communication means 62 . The remote control device 40 is equipped with a control unit 44 to which the detection value of the dust sensor 50 received by the second communication means 62 is input. The control unit 44 is electrically connected to the cleaning water supply pump 22 via the communication unit 60, and controls the amount of cleaning water supplied to the cleaning water supply pump 22 to increase or decrease depending on the amount of dust. Specifically, when there is a lot of dust in the water intake, a signal is sent to increase the pumping rate of the cleaning water supply pump 22, thereby increasing the amount of cleaning water supplied to the cleaning spray 30. On the other hand, when there is a little dust in the water intake, a signal is sent to decrease the pumping rate of the cleaning water supply pump 22, thereby decreasing the amount of cleaning water supplied to the cleaning spray 30. In this way, the amount of cleaning water in the cleaning spray 30 is controlled depending on the amount of dust, thereby saving energy for supplying cleaning water and enabling efficient cleaning.

[0018] (Example 3) Screen rotation speed 3 is a schematic diagram of the configuration of a remote monitoring system for cleaning water for a dust remover according to Example 3. As shown in the figure, the remote monitoring system for cleaning water for a dust remover according to Example 3 10B includes a speed sensor 70 that detects the rotation speed of the screen 4, and the remote operation device 40 includes a control unit 44 that receives the detection value of the speed sensor 70 and controls the amount of cleaning water supplied to the cleaning water supply pump 22 to increase or decrease depending on the rotation speed. The speed sensor 70 is attached to a drive device that rotates the screen 4 and is configured to be able to detect the rotation speed of the screen 4. The first communication means 62 is configured to be able to transmit the detection value of the speed sensor 70 to the second communication means 64 . The second communication means 64 is configured to be able to receive the detection value of the speed sensor 70 from the first communication means 62 . The remote control device 40 is equipped with a control unit 44 to which the detection value of the speed sensor 70 received by the second communication means 64 is input. The control unit 44 is electrically connected to the cleaning water supply pump 22 via the communication unit 60 and controls the amount of cleaning water supplied to the cleaning water supply pump 22 to increase or decrease depending on the rotational speed. Specifically, when there is a lot of dust in the water intake, the rotational speed of the screen 4 is increased to capture more dust. At this time, a signal is sent to increase the pumping rate of the cleaning water supply pump 22, thereby increasing the amount of cleaning water supplied to the cleaning spray 30. On the other hand, when there is a small amount of dust in the water intake, the rotational speed of the screen 4 is decreased. At this time, a signal is sent to decrease the pumping rate of the cleaning water supply pump 22, thereby decreasing the amount of cleaning water supplied to the cleaning spray 30. As a result, the amount of cleaning water supplied to the cleaning spray 30 is controlled depending on the rotational speed of the screen 4, thereby saving energy required to supply cleaning water and enabling efficient cleaning.

[0019] According to the present invention, clogging of strainers for cleaning water and cleaning sprays can be monitored remotely without visiting the site, thereby reducing the burden of inspection work. Furthermore, the amount of washing water sprayed is controlled according to the amount of dust or the rotation speed of the screen, so energy required for supplying washing water can be saved and washing can be performed efficiently. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and various modifications can be made without departing from the spirit and scope of the present invention. Furthermore, the present invention is not limited to the combinations shown in the embodiments, but can be implemented in various combinations. [Explanation of symbols]

[0020] 1 Dust removal device 2 carrying chains 3B lower sprocket wheel 4 screens 5. Housing 10, 10A, 10B Dust removal equipment cleaning water remote monitoring system 20 Cleaning water supply unit 22 Cleaning water supply pump 24 Cleaning water main pipe 26 Strainer 28 First pressure sensor 30 Cleaning Spray 32 Cleaning water branch pipe 34 Second pressure sensor 40 Remote Control Device 42 Display section 44 Control Unit 50 Dust sensor 60 Communications Department 62 First means of communication 64 Second means of communication 70 Speed ​​Sensor

Claims

1. A cleaning water remote monitoring system for a dust remover, comprising: a cleaning water supply unit that cleans a screen of the dust remover; and a remote control device that remotely monitors the cleaning water supply unit via a communication unit, The cleaning water supply unit a main cleaning water pipe connected to a cleaning water supply pump that draws cleaning water from the intake channel; a strainer disposed in the main cleaning water pipe for removing dust from the cleaning water; a first pressure sensor that detects the water pressure of the main flush water pipe to detect clogging of the strainer; a cleaning spray that sprays the cleaning water onto the screen; a cleaning water branch pipe that branches off from the cleaning water main pipe and connects to the cleaning spray; a second pressure sensor for detecting the water pressure of the cleaning water branch pipe to detect clogging of the cleaning spray; The communication unit a first communication means for transmitting the detected values ​​of the first and second pressure sensors to the remote control device; and a second communication means provided in the remote control device for receiving the detected values ​​of the first and second pressure sensors from the first communication means, The remote control device is a display unit that displays the detected values ​​of the first and second pressure sensors; A remote monitoring system for cleaning water for a dust removal device, characterized in that a set value is set for when clogging occurs in the strainer and cleaning spray, and an alarm is provided to sound a warning when the detected values ​​of the first and second pressure sensors approach or exceed the set value.

2. 2. The cleaning water remote monitoring system for a dust removal device according to claim 1, A dust sensor is provided which photographs the screen bucket with a camera and detects the amount of dust adhering to the screen using an image recognition processing program. A remote monitoring system for cleaning water for a dust removal device, characterized in that the remote control device is equipped with a control unit that receives the detection value of the dust sensor and controls the amount of cleaning water supplied to the cleaning water supply pump to increase or decrease depending on the amount of dust.

3. 2. The cleaning water remote monitoring system for a dust removal device according to claim 1, a speed sensor attached to a drive device that rotates and moves the screen and that detects the rotation speed of the screen; The remote control device is characterized in that it is equipped with a control unit that receives the detection value of the speed sensor and controls the amount of cleaning water supplied to the cleaning water supply pump to increase or decrease depending on the rotational speed.

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