CN213725201U - One-use one-standby flushing water system of single-speed rotary filter screen - Google Patents
One-use one-standby flushing water system of single-speed rotary filter screen Download PDFInfo
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- CN213725201U CN213725201U CN202021924978.4U CN202021924978U CN213725201U CN 213725201 U CN213725201 U CN 213725201U CN 202021924978 U CN202021924978 U CN 202021924978U CN 213725201 U CN213725201 U CN 213725201U
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- electric valve
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- liquid level
- rotary screen
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Abstract
The utility model discloses a one-use one-standby flushing water system of a single-speed rotary filter screen, which comprises a single-speed rotary filter screen, two flushing channels, a plurality of electric valves and a rotary screen control box, wherein the two flushing channels are respectively a flushing channel A and a flushing channel B; the utility model discloses a redundant sparge water system solves the shortcoming that relevant equipment fault rates such as wash water pump are high, uses electric valve simultaneously, avoids artifical the participation, and the full automatic operation of completion system has intelligence, high efficiency, reliable advantage, continuously provides stable drainage, the guarantee water for the power plant.
Description
Technical Field
The utility model belongs to the technical field of circulating water filtration equipment's control system, concretely relates to single fast rotary filter screen's one uses one and is equipped with wash water system.
Background
With the national development of economic strategies, the demand for energy sources is increasing, and nuclear power plants, hydropower stations and the like need a large amount of filtered water as a power generation source. The conventional circulating water filtering system in the prior art adopts a single flushing water pump, a filter, a flushing pipeline and a manual electric valve, and has the defects of high failure rate, manual participation and low intelligent degree.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses an one-use one is equipped with wash water system of single fast rotary filter screen has the redundant, the reliability of structure is high, last water supply, high efficiency, stable advantage.
The utility model provides a technical scheme, in particular to a one-use one-standby flushing water system of a single-speed rotary filter screen, which comprises a single-speed rotary filter screen, two flushing channels, a plurality of electric valves and a rotary screen control box, wherein the two flushing channels are respectively a flushing channel A and a flushing channel B;
a first flushing pump, a first electric valve, a second electric valve, a first filter, a third electric valve and a fourth electric valve are sequentially arranged in the flushing channel A; a second flushing pump, a fifth electric valve, a sixth electric valve, a second filter, a seventh electric valve and an eighth electric valve are sequentially arranged in the flushing channel B;
an upstream liquid level sensor and a downstream liquid level sensor are respectively arranged in front of and behind the single-speed rotary filter screen;
the A flushing channel and the B flushing channel are connected in parallel and are respectively connected with the rotary screen control box in series, and a ninth electric valve is arranged between the rotary screen control box and the A flushing channel and between the rotary screen control box and the B flushing channel.
The rotary screen control box comprises a rotary screen PLC control unit, a first flushing pump, a second flushing pump, a first filter, a second filter, fault detection electric parts and control parts of a plurality of electric valves, and a differential pressure liquid level meter;
and the rotary network PLC control unit is respectively in signal connection with the timer, the storage unit, the fault detection electric part and control part and the differential pressure liquid level meter.
And the upstream liquid level sensor and the downstream liquid level sensor are in signal connection with the differential pressure liquid level meter.
The fault detection electrical part and the control part comprise a plurality of valve fault detection units, valve execution units, pump fault detection units, pump execution units, filter fault detection units and filter execution units.
Be equipped with on the single-speed rotation filter screen and revolve net electric valve, be equipped with filter electric valve on first filter and the second filter respectively.
The utility model has the advantages that:
the utility model discloses a redundant sparge water system solves the shortcoming that relevant equipment fault rates such as wash water pump are high, uses electric valve simultaneously, avoids artifical the participation, and the full automatic operation of completion system has intelligence, high efficiency, reliable advantage, continuously provides stable drainage, the guarantee water for the power plant.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall arrangement structure of the present invention;
fig. 2 is a schematic structural view of the fault detection electrical component and the control component of the present invention;
fig. 3 is a schematic diagram of a framework of the control method according to the embodiment of the present invention.
Detailed Description
The invention will be further explained below with reference to specific embodiments, without limiting the invention.
As shown in fig. 1, a one-use one-standby flushing water system for a single-speed rotary filter screen comprises a single-speed rotary filter screen, two flushing channels, a plurality of electric valves and a rotary screen control box, wherein the two flushing channels are a flushing channel A and a flushing channel B respectively;
a first washing pump 11, a first electric valve 12, a second electric valve 13, a first filter 14, a third electric valve 15 and a fourth electric valve 16 are sequentially arranged in the washing channel A; a second flushing pump 21, a fifth electric valve 22, a sixth electric valve 23, a second filter 24, a seventh electric valve 25 and an eighth electric valve 26 are sequentially arranged in the flushing channel B;
an upstream liquid level sensor and a downstream liquid level sensor are respectively arranged in front of and behind the single-speed rotary filter screen;
the rotary screen control box comprises a rotary screen PLC control unit 2, a first flushing pump, a second flushing pump, a first filter, a second filter, fault detection electric parts and control parts of a plurality of electric valves and a differential pressure liquid level meter, wherein the fault detection electric parts and the control parts can respectively detect faults of the first flushing pump, the second flushing pump, the first filter and the plurality of electric valves and control the start and stop of the first flushing pump, the second filter and the plurality of electric valves;
a washes the passageway and B and washes the passageway and parallel connection, respectively with revolve net PLC the control unit 2 series connection, it is equipped with ninth electrically operated valve 27 to revolve net PLC the control unit 2 and A washes the passageway and B washes the passageway within a definite time.
The rotary network PLC control unit 2 is respectively in signal connection with the timer 31, the storage unit, the fault detection electric part and control part and the differential pressure liquid level meter; the upstream liquid level sensor and the downstream liquid level sensor are in signal connection with the differential pressure liquid level meter.
As shown in fig. 2, the fault detection electrical and control components specifically include a valve fault detection unit and a valve execution unit; a pump failure detection unit and a pump execution unit; a filter failure detection unit and a filter execution unit.
Be equipped with on the single-speed rotation filter screen and revolve net electric valve, be equipped with filter electric valve on first filter and the second filter respectively.
The working process of the system is as follows: the single-speed rotary filter screen is provided with an upstream liquid level sensor and a downstream liquid level sensor, the liquid levels of the front part and the rear part of the rotary screen are detected, the detected liquid level value is transmitted to a differential pressure liquid level meter, the differential pressure liquid level meter calculates to obtain a liquid level difference, a liquid level difference signal is transmitted to a rotary screen PLC control unit 2, corresponding threshold values are recorded in a storage unit 32 connected with the PLC control unit 2, when the rotary screen PLC control unit 2 judges that the liquid level of the front part of the rotary screen is 200mm higher than the liquid level of the rear part of the rotary screen, a liquid level difference A alarm is sent out, an alarm signal is transmitted to a corresponding valve execution unit and a corresponding pump execution unit, a first electric valve, a second electric valve, a third electric valve, a fourth electric valve, a ninth electric valve, a first flushing pump and a rotary screen are opened, and finally the rotary screen is started to run at a low speed; when the liquid level in front of the net is 300mm higher than the liquid level in the back of the net, a liquid level difference high B alarm is sent out, and meanwhile, the rotary net PLC control unit 2 stops the low-speed motor and starts the high-speed motor to run. When the liquid level difference is reduced to 50mm, the net rotating PLC control unit 2 stops rotating the net first, then stops the pump A, and finally closes the first to fourth electric valves and the ninth electric valve.
When the liquid level difference is high or the timing time is up, the system can open the electric valve firstly, specifically, the single-speed rotary filter screen 1 is provided with an upstream liquid level sensor and a downstream liquid level sensor to detect the liquid levels before and after the screen, the screen rotating PLC control unit 2 calculates the liquid level difference before and after the screen, then controls the start and stop of the first flushing pump, the first filter, the first to fourth electric valves and the ninth electric valve 27, when the electric valve is in place, the first flushing pump is started, and finally the single-speed rotary filter screen is started, and the time sequence operation is realized by connecting the PLC control unit and the timer; when the liquid level difference is high and the timing signal disappears, the system stops rotating the filter screen, then stops the water pump and finally closes the electric valve.
Under normal conditions, the washing channel A is used for providing washing water for the single-speed rotary filter screen, namely the rotary screen PLC control unit 2 controls the cooperation of the first washing pump 11, the first filter 14, the first to fourth electric valves and the ninth electric valve 27 to complete the supply of the washing water for the rotary screen, when the water pump, the filter or the electric valve of the washing channel A breaks down, the fault detection electric part and the control part can respectively detect the faults of the first washing pump, the first filter, the first to fourth electric valves and the ninth electric valve 27 and control the start and stop of the first washing pump, the first filter, the first to fourth electric valves and the ninth electric valve 27, when the rotary screen PLC control unit 2 detects that any one of the first washing pump, the first filter and the first to fourth electric valves breaks down, the channel B is switched to be switched, namely the fifth to eighth electric valves are opened, and the second washing pump is started, meanwhile, closing the first to fourth electric valves, closing the first flushing pump, sending a flushing channel A fault alarm, and timely repairing relevant equipment on site by site operators; when the A flushing channel returns to normal, the system automatically switches to the A flushing channel, and the method specifically comprises the following steps: when the rotary screen PLC control unit 2 detects that the fault detection units of the first flushing pump, the first filter and the first to fourth electric valves have no fault alarm, the channel A is switched to the channel A after being recovered to be normal, namely, the first to fourth electric valves are opened, the first flushing pump is started, meanwhile, the fifth to eighth electric valves are closed, and the second flushing pump is closed, namely, the system can realize automatic and quick switching to the flushing channel B;
in summary, as shown in fig. 3, the control system for the single-speed rotary strainer and the one-use one-standby rinsing water provided in the present embodiment has 3 control methods: local manual control, remote manual control and remote automation. Wherein, the remote automatic control mode divides again: timing control, differential pressure control. The priority sequence of the control is as follows: local manual control, remote manual control, differential pressure control and timing control.
a. And (3) local manual control: when the single-speed rotary filter screen has high differential pressure alarm or other situations, an operator can manually start and stop the single-speed rotary filter screen and the backwashing pump on site.
b. Remote manual control: and in the system debugging stage, an operator can remotely and manually control the starting and stopping of the related equipment in the centralized control room.
c. And (3) differential pressure control: when the pressure difference between the two ends of the single-speed rotary filter screen is higher than a set value, the single-speed rotary filter screen and the backwashing pump are triggered to be started, and the single-speed rotary filter screen is washed; and when the pressure difference between the two ends of the single-speed rotary filter screen is lower than a set value, the single-speed rotary filter screen and the backwashing pump are triggered to be closed.
d. Timing control: under normal conditions, the single-speed rotary filter screen is controlled by the timer to start and stop, and the back washing pump is locked to be started and closed, so that the single-speed rotary filter screen is washed.
This system adopts one to use one to be equipped with the sparge water design, and under the normal condition, uses first washing passageway to provide the washing water to single-speed rotary filter screen, when the water pump of first washing passageway, filter or electric valve broke down, this system can automatic, fast switch to the second washes the passageway to send A and wash the passageway malfunction alerting, on-the-spot operating personnel in time arrive on-the-spot repair relevant equipment, when A washes the passageway and resumes normally, this system automatic switch to A again washes the passageway. When the realization is washed the passageway and is damaged, the rotary screen does not shut down, and the reserve passageway that washes of automatic switch-over has realized continuously providing the purpose of circulating water, and to a great extent has improved the high shortcoming of single passageway fault rate that washes.
In addition, the system adopts the electric valve to replace a manual valve, manual participation is not needed in the whole process, when the liquid level difference is high or the timing time is up, the system can open the electric valve firstly, when the electric valve is in place, the A washing water pump is started, and finally the single-speed rotary filter screen is started. When the liquid level difference is high and the timing signal disappears, the system stops rotating the filter screen, then stops the water pump and finally closes the electric valve. Compared with a manual valve, the control scheme saves labor cost and improves filtering efficiency.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.
Claims (4)
1. A one-use one-standby flushing water system of a single-speed rotary filter screen is characterized by comprising the single-speed rotary filter screen, two flushing channels, a plurality of electric valves and a rotary screen control box, wherein the two flushing channels are respectively a flushing channel A and a flushing channel B;
a first flushing pump (11), a first electric valve (12), a second electric valve (13), a first filter (14), a third electric valve (15) and a fourth electric valve (16) are sequentially arranged in the flushing channel A; a second flushing pump (21), a fifth electric valve (22), a sixth electric valve (23), a second filter (24), a seventh electric valve (25) and an eighth electric valve (26) are sequentially arranged in the flushing channel B;
an upstream liquid level sensor and a downstream liquid level sensor are respectively arranged in front of and behind the single-speed rotary filter screen;
the A flushing channel and the B flushing channel are connected in parallel and are respectively connected with the rotary screen control box in series, and a ninth electric valve is arranged between the rotary screen control box and the A flushing channel and between the rotary screen control box and the B flushing channel.
2. A single use, one backup water flush system for a single speed rotary screen of claim 1 wherein said rotary screen control box comprises a rotary screen PLC control unit, fault detection electrical and control elements for the flush pump, filter and several electrically operated valves, a differential pressure level gauge;
the rotary network PLC control unit is respectively in signal connection with a timer, a storage unit, a fault detection electrical part, a fault detection control part and a differential pressure liquid level meter, and the upstream liquid level sensor and the downstream liquid level sensor are in signal connection with the differential pressure liquid level meter.
3. A single use, backup water flush system for a single speed rotary screen of claim 2 wherein the fault detection electronics and controls include valve fault detection units, valve actuation units, pump fault detection units, pump actuation units, filter fault detection units, and filter actuation units.
4. A single speed rotary screen ready to use and ready to flush water system as claimed in claim 1 wherein the single speed rotary screen is provided with rotary screen electric valves and the first and second filters are provided with filter electric valves respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021924978.4U CN213725201U (en) | 2020-09-04 | 2020-09-04 | One-use one-standby flushing water system of single-speed rotary filter screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021924978.4U CN213725201U (en) | 2020-09-04 | 2020-09-04 | One-use one-standby flushing water system of single-speed rotary filter screen |
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| CN213725201U true CN213725201U (en) | 2021-07-20 |
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| CN202021924978.4U Active CN213725201U (en) | 2020-09-04 | 2020-09-04 | One-use one-standby flushing water system of single-speed rotary filter screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146492A (en) * | 2021-11-30 | 2022-03-08 | 中广核工程有限公司 | Automatic flushing standby system and automatic flushing method |
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2020
- 2020-09-04 CN CN202021924978.4U patent/CN213725201U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146492A (en) * | 2021-11-30 | 2022-03-08 | 中广核工程有限公司 | Automatic flushing standby system and automatic flushing method |
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