CN204672015U - A kind of recirculated water secondary filter control device - Google Patents
A kind of recirculated water secondary filter control device Download PDFInfo
- Publication number
- CN204672015U CN204672015U CN201520397005.2U CN201520397005U CN204672015U CN 204672015 U CN204672015 U CN 204672015U CN 201520397005 U CN201520397005 U CN 201520397005U CN 204672015 U CN204672015 U CN 204672015U
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- CN
- China
- Prior art keywords
- secondary filter
- controller
- differential pressure
- filter screen
- recirculated water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of recirculated water secondary filter control device, comprise the rotating shaft be connected with web-roll core, the drive motors driving described rotating shaft to rotate, for clearing up the blowdown apparatus of filter screen, also comprise back flushing differential pressure checkout gear, filter screen rotation detecting device and the controller for controlling backwash time, backwash differential pressure, control secondary filter operation automatically, described back flushing differential pressure checkout gear, filter screen rotation detecting device are electrically connected with controller, and described controller is electrically connected with the control end of described drive motors and blowdown apparatus.The utility model achieves the Automated condtrol to secondary filter system, and operations staff can change backwash time, backwash differential pressure etc. according to actual condition, has automaticity high, is applicable to the advantage of different operating mode.
Description
Technical field
The utility model relates to a kind of control device, particularly a kind of recirculated water secondary filter control device.
Background technology
Along with the development of power plant's control technology in recent years, secondary filter controls to be present in each power plant as an important control system.It act as middle dirt of purifying waste water, keeps condenser water box to be often in clean conditions, ensures glueballs bringing normally into operation, improves the glueballs rate of recovery.Secondary filter control system more is at present the fixed and rotary secondary filter screen of relay group control on the spot, controlling functions is single, only possess simple equipment start-stop function, also comparatively lack system operational parameters simultaneously and monitor and can only cannot far control by local operation.For the water degradation situation caused by seasonal variations, lack automatic control means more targetedly.
Utility model content
The utility model main purpose is to solve the problem and deficiency, provides a kind of recirculated water secondary filter control device of Precise control more.
For achieving the above object, the technical solution of the utility model is:
A kind of recirculated water secondary filter control device, comprise the rotating shaft be connected with web-roll core, the drive motors driving described rotating shaft to rotate, for clearing up the blowdown apparatus of filter screen, also comprise back flushing differential pressure checkout gear, filter screen rotation detecting device and the controller for controlling backwash time, backwash differential pressure, control secondary filter operation automatically, described back flushing differential pressure checkout gear, filter screen rotation detecting device are electrically connected with controller, and described controller is electrically connected with the control end of described drive motors and blowdown apparatus.
Further, described filter screen rotation detecting device comprises the toothed disc be arranged in rotating shaft, is arranged on the proximity switch of the tooth top side of toothed disc, and the signal output part of described proximity switch is electrically connected with described controller.
Further, described back flushing differential pressure checkout gear comprises the pressure sensor device be arranged on inside and outside filter screen, and described pressure sensor device is electrically connected with described controller.
Further, described controller connection one is for the touch display screen of Non-follow control.
Further, described controller is PLC.
Further, described controller is electrically connected with the DCS system for Long-distance Control.
To sum up content, a kind of recirculated water secondary filter control device described in the utility model, by arranging checkout gear and controller, achieve the Automated condtrol to secondary filter system, operations staff can change backwash time, backwash differential pressure etc. according to actual condition, there is automaticity high, be applicable to the advantage of different operating mode.By arranging the filter screen rotation detecting device of toothed disc, proximity switch, secondary filter can be rotated a circle and be divided into fixing equal portions and the accurate time detected each equal portions and rotate, make operations staff can control the backwash time of each equal portions, realize meticulousr detection and control.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
As depicted in figs. 1 and 2, controller 1, filter screen rotation detecting device 2, back flushing differential pressure checkout gear 3, DCS system 4, drive motors 5, touch display screen 6, blowdown apparatus 7, housing 8.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail:
As shown in Figure 1, a kind of recirculated water secondary filter control device, comprise the rotating shaft (not shown) be arranged in secondary filter screen equipment housing 8, drive motors 5, blowdown apparatus 7, drive motors 5 rotates in order to drive shaft, rotating shaft is connected with web-roll core, and blowdown apparatus 7 is in order to clear up the impurity be attached on secondary filter.
Control device also comprises controller 1, filter screen rotation detecting device 2, back flushing differential pressure checkout gear 3, filter screen rotation detecting device 2, back flushing differential pressure checkout gear 3 are electrically connected with controller 1, and controller 1 is electrically connected with the control end of drive motors 5 and blowdown apparatus 7.
Filter screen rotation detecting device 2 is in order to detect axis of rotation angle, and detection data are transferred to controller 1 by filter screen rotation detecting device 2, and controller 1, according to the rotating speed of Data Control drive motors 5, controls the object of backwash time to reach.
Back flushing differential pressure checkout gear 3 is in order to detect filter screen external and internal pressure, and detection data are transferred to controller 1 by back flushing differential pressure checkout gear 3, and whether controller 1 is opened according to Data Control blowdown apparatus 7, to reach the object controlling backwash differential pressure.
Filter screen rotation detecting device 2 comprises toothed disc, proximity switch (not shown), and toothed disc is arranged in rotating shaft, arranges proximity switch in the tooth top side of toothed disc, and the signal output part of proximity switch is electrically connected with controller 1.
In the present embodiment, toothed disc is 12 gear dishes, secondary filter is rotated a circle and be divided into 12 equal portions, secondary filter often rotates lattice (1/12 circle), proximity switch all can detect, this on-off model is transferred to controller 1 by proximity switch, and controller 1 can control the rotating speed of drive motors 5 further according to data, to realize the backwash time controlling often to rotate lattice.
By arranging the checkout gear of toothed disc, proximity switch, except the rotating speed controlling drive motors 5 for controller 1 provides the detection data calculated needed for rotating speed, also make operations staff can control the backwash time of every lattice, realize meticulousr detection and control.
Back flushing differential pressure checkout gear 3 comprises pressure sensor device (not shown), and pressure sensor device is arranged on inside and outside network, and in order to detect differential pressure size inside and outside filter screen, pressure sensor device is electrically connected with controller 1.
In the present embodiment, controller 1 is PLC (Programmable Logic Controller, programmable logic controller (PLC)), and controller 1 connects a touch display screen 6, and operations staff can in operations such as the enterprising line parameter amendments of touch display screen 6.Controller 1 is also electrically connected with DCS system (Distributed Control System, dcs), and DCS system can carry out the operations such as remotely modifying operational factor.
This control device can realize the switching with regard near operation and remote-operated switching, automatic mode and manual mode, and touch display screen 6 provides VARIABLE PARAMETER PID CONTROL function, can change and arrange the backwashing time that secondary filter often rotates 1/12 circle.According to the situation of change of season and water quality, operations staff decides time and the efficiency of backwash by changing setup times; Operations staff also can change the time interval of regular backwash secondary filter, to adapt to the demand under different operating mode; The differential pressure definite value of secondary filter backwash also can be revised on touch display screen 6 according to the actual needs of operations staff, so that meet the different demands of operations staff.There is automaticity high, be applicable to the advantage of different operating mode.
As mentioned above, plan content given by reference to the accompanying drawings, can derive similar technical scheme.In every case be the content not departing from technical solutions of the utility model, any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. a recirculated water secondary filter control device, comprise the rotating shaft be connected with web-roll core, the drive motors driving described rotating shaft to rotate, for clearing up the blowdown apparatus of filter screen, it is characterized in that: also comprise back flushing differential pressure checkout gear, filter screen rotation detecting device and the controller for controlling backwash time, backwash differential pressure, control secondary filter operation automatically, described back flushing differential pressure checkout gear, filter screen rotation detecting device are electrically connected with controller, and described controller is electrically connected with the control end of described drive motors and blowdown apparatus.
2. a kind of recirculated water secondary filter control device according to claim 1, it is characterized in that: described filter screen rotation detecting device comprises the toothed disc be arranged in rotating shaft, is arranged on the proximity switch of the tooth top side of toothed disc, and the signal output part of described proximity switch is electrically connected with described controller.
3. a kind of recirculated water secondary filter control device according to claim 1 and 2, is characterized in that: described back flushing differential pressure checkout gear comprises the pressure sensor device be arranged on inside and outside filter screen, and described pressure sensor device is electrically connected with described controller.
4. a kind of recirculated water secondary filter control device according to claim 1, is characterized in that: described controller connection one is for the touch display screen of Non-follow control.
5. a kind of recirculated water secondary filter control device according to claim 1 or 4, is characterized in that: described controller is PLC.
6. a kind of recirculated water secondary filter control device according to claim 1 and 2, is characterized in that: described controller is electrically connected with the DCS system for Long-distance Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520397005.2U CN204672015U (en) | 2015-06-10 | 2015-06-10 | A kind of recirculated water secondary filter control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520397005.2U CN204672015U (en) | 2015-06-10 | 2015-06-10 | A kind of recirculated water secondary filter control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204672015U true CN204672015U (en) | 2015-09-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520397005.2U Expired - Fee Related CN204672015U (en) | 2015-06-10 | 2015-06-10 | A kind of recirculated water secondary filter control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204672015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647436A (en) * | 2016-09-26 | 2017-05-10 | 广东惠州天然气发电有限公司 | Circulation cooling water secondary filter screen remote control apparatus and method thereof |
-
2015
- 2015-06-10 CN CN201520397005.2U patent/CN204672015U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647436A (en) * | 2016-09-26 | 2017-05-10 | 广东惠州天然气发电有限公司 | Circulation cooling water secondary filter screen remote control apparatus and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20200610 |