CN205259346U - Sump pit automatic drainage controlling means - Google Patents
Sump pit automatic drainage controlling means Download PDFInfo
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- CN205259346U CN205259346U CN201520987860.9U CN201520987860U CN205259346U CN 205259346 U CN205259346 U CN 205259346U CN 201520987860 U CN201520987860 U CN 201520987860U CN 205259346 U CN205259346 U CN 205259346U
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- centrifugal pump
- liquid level
- drainage
- sump pit
- catch pit
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Abstract
The utility model relates to a sump pit automatic drainage controlling means of suitable pulping and paper -making factory utilizes DCS (Distributed control systems decentralized control system ) the technique of modernization and the automatic instrumentation of high accuracy, and through the logical liquid level to the sump pit of sequential control that DCS set up, the drainage centrifugal pump is watered, and opening of drainage centrifugal pump stops carrying on automatic control. Reach high spacingly when the sump pit liquid level, output signal opens the solenoid valve of pouring water, the automatic timer when solenoid valve is opened, and the timing finishes the solenoid valve closes, opens the centrifugal pump drainage simultaneously, reaches low spacingly when the sump pit liquid level, and output signal stops the centrifugal pump, waits for next circulation. The utility model discloses it needs the inspection to have changed present sump pit drainage, and loaded down with trivial details procedure such as water for sump pit automatic drainage provides one set of automated control device, effectively improves the controllability and the reliability of sump pit drainage, reduces the maloperation, reduces the accident rate.
Description
Technical field
The utility model relates to pulp and paper technology field, particularly a kind of catch pit automatic drainage control device.
Background technology
At present, pulp and paper making workshop is many, area is large, each workshop can relate to water supply and drainage, in the time that workshop has draining needs and pumping equipment lower than outdoor drainage pipe network, such as the draining such as some stock tanks or equipment at below ground, need to temporarily collect dirty waste water or the miscellaneous water that needs are discharged by the catch pit of a constant volume is set, in the time running up to certain water level, (automatic or manual) starts the draining pump (being generally centrifugal pump) being located in hole, water extraction is raised to the height of outdoor drainage pipe network, then discharges by tube net outside. But because these catch pit quantity are many, relatively disperse, and major part is in underground, environment is severe, the when full also not timing of catch pit water level, by operation artificial every day of frequent tours of inspection catch pit water level, once find that water level is high, manually centrifugal pump is poured water, then notify control room to open motor, taken out low to reinform termination of pumping Deng water level, labour intensity is large, and efficiency is low, if slightly do not noted if maked an inspection tour less catch pit one or two, once catch pit generation spill-over, can cause the entirely technique electrical equipment in lower hole to be soaked by sewage, loss greatly. Also some pulp and paper making adopts self-action immersible pump to sumping, but according to our actual use experience, under the environment of pulp and paper making, the immersible pump life-span is short, and fault rate is high, has generally used a period of time to be still centrifuged pump and has replaced.
Utility model content
The purpose of this utility model is to provide a kind of catch pit automatic drainage control device of applicable pulp and paper making, utilize modern DCS(DistributedControlSystems scattered control system) technology and high-precision automatic detecting instrument table, change current sumping and need inspection, the complicated procedures such as pour water, for catch pit Auto-drainage provides a set of automatic control device, the controllability and the reliability that effectively improve sumping, reduce maloperation, reduces accident rate.
The utility model is achieved through the following technical solutions:
A kind of catch pit automatic drainage control device, that centrifugal pump and control assembly are installed in catch pit, it comprises liquid level sensor, suction hose, centrifugal pump, centrifugal pump motor, magnetic valve, drainpipe, irrigation pipe, shaft coupling, pedestal and DCS controller, described liquid level sensor and suction hose are arranged in catch pit, suction hose outlet is provided with suction hose bottom valve, suction hose is connected with centrifugal pump, centrifugal pump connects centrifugal pump motor by shaft coupling and is arranged on pedestal, centrifugal pump connects drainpipe and irrigation pipe, irrigation pipe is provided with magnetic valve, float ball liquid level sensor, suction hose bottom valve, centrifugal pump motor is connected with DCS controller respectively with the magnetic valve being arranged on irrigation pipe.
Described liquid level sensor is provided with high and low liquid level induction point, and in the time that water level arrives high or low liquid level induction point, liquid level signal is sent to DCS controller by liquid level sensor, for reporting to the police and interlocking. The startup of centrifugal pump is to arrive DCS by the DI signal feedback of closing of magnetic valve, and DCS sends DO enabling signal to centrifugal pump, and centrifugal pump starts. Stopping of centrifugal pump is that low liquid level signal by liquid-level switch feeds back to DCS, and DCS sends DO and closes signal to centrifugal pump, and centrifugal pump stops.
In described DCS controller, be provided with the timer of configuration. The auto-irrigation of centrifugal pump is to feed back to DCS by the high liquid level signal of liquid-level switch, DCS sends DO and opens signal to the magnetic valve of pouring water, magnetic valve is opened to centrifugal pump and is poured water, a delay procedure is set on DCS, open after certain hour when magnetic valve, fill with into the water of centrifugal pump and meet pump startup condition, closed electromagnetic valve, export digital quantity DI signal to DCS, for interlocking simultaneously.
The liquid level of the sequential control logic that the utility model arranges by DCS to catch pit, discharging centrifugal pump is poured water, and the start and stop of discharging centrifugal pump are controlled automatically. When catch pit liquid level reaches high spacing, output signal is opened the magnetic valve of pouring water, self-clocking when magnetic valve is opened, timing finishes closed electromagnetic valve, opens Centrifugal pump drainage simultaneously, when catch pit liquid level reaches low spacing, output signal stops centrifugal pump, waits for next circulation.
Compared to prior art, the catch pit automatic drainage control device that the utility model provides has the following advantages:
1, the utility model catch pit automatic drainage control device, utilize the powerful DCS control system of pulp and paper making, only increase a floating-ball level switch and a magnetic valve, just can reach unmanned Auto-drainage, and reliability is high, labour intensity and accident rate are reduced;
2, the utility model catch pit automatic drainage control device, can accurately control the keying of centrifugal pump by liquid level sensor, centrifugal pump water suction steadily, not only the water level in catch pit can be controlled to certain limit, guarantee equipment and production safety, can also make the regular start and stop of centrifugal pump, save electric energy, reduce cost;
3, the utility model catch pit automatic drainage control device, except being applicable to paper mill, other have factory, municipal sewage system drainage system, the construction site drainage system of catch pit to be suitable for.
Brief description of the drawings
Fig. 1 is catch pit automatic drainage control device schematic diagram;
Fig. 2 is catch pit automatic drainage control device structure chart;
Parts sequence number and title in figure:
1, liquid level sensor, 2, high liquid level induction point, 3, low liquid level induction point, 4, ball float, 5, catch pit, 6, suction hose bottom valve, 7, suction hose, 8, centrifugal pump, 9, centrifugal pump motor, 10, magnetic valve, 11, drainpipe, 12, irrigation pipe, 13, shaft coupling, 14, pedestal, 15, DCS controller.
Detailed description of the invention
As shown in Figure 1, by the two position signal of catch pit, the shutdown signal of magnetic valve of pouring water inputs to the DI fastener of DCS, by the signal of opening of the magnetic valve of pouring water, the DO fastener that opens/stop signal and input to DCS of discharging centrifugal pump motor, to these signal configuration interlockings, by controller processing instruction, can make whole device realize automation draining by the software at DCS host computer.
As shown in Figure 2, liquid level sensor 1 comprises ball float 4, is provided with high liquid level induction point 2, low liquid level induction point 3. when catch pit 5 liquid levels raise, ball float also and then rises, in the time that ball float reaches high liquid level induction point 2, the high liquid level signal of output catch pit, DCS controller 15 receive high liquid level signal feedback simultaneously interlocking open the magnetic valve 10 of pouring water, the timer that magnetic valve is opened configuration in Time Controller starts self-clocking, the time of timing is according to the capacity of catch pit and pump capacity size and free setting, timing finishes magnetic valve 10 and automatically closes, export the shutdown signal of the magnetic valve of pouring water, DCS controller 15 receives closed electromagnetic valve signal feedback interlocked startup centrifugal pump motor 9 simultaneously, drive centrifugal pump 8 drainings by shaft coupling 13, catch pit 5 water levels start to decline, in the time that ball float reaches low liquid level induction point 3, the low liquid level signal of output catch pit, DCS controller receives low liquid level signal feedback and interlocks and stop centrifugal pump motor 9 simultaneously, whole control program finishes, wait for next circulation.
Application Example 1
Certain paper-making pulping factory former design catch pit automaticity is low, adopts a Centrifugal pump drainage, before starting, needs to pour water because centrifugal pump is each, before each draining, all need under an operative employee melt pit to drive hand valve and pour water, notify control room turn on pump after having filled with water, etc. liquid level low after reinform termination of pumping, inefficiency, there is twice owing to producing anxiety, and do not go to note the catch pit water level under melt pit for a long time, and caused melt pit by water logging, motor is soaked, and suffers heavy losses. Press afterwards the transformation of the utility model catch pit automatic drainage control device, increased a set of floating-ball level switch and a magnetic valve, and on DCS, carry out signal configuration interlocking, reach the automatic drainage function of high reliability, realize unmanned, improved operating efficiency, reduced accident rate.
Claims (3)
1. a catch pit automatic drainage control device, it is characterized in that, that centrifugal pump and control assembly are installed in catch pit, it comprises liquid level sensor, suction hose, centrifugal pump, centrifugal pump motor, magnetic valve, drainpipe, irrigation pipe, shaft coupling, pedestal and DCS controller, described liquid level sensor and suction hose are arranged in catch pit, suction hose outlet is provided with suction hose bottom valve, suction hose is connected with centrifugal pump, centrifugal pump connects centrifugal pump motor by shaft coupling and is arranged on pedestal, centrifugal pump connects drainpipe and irrigation pipe, irrigation pipe is provided with magnetic valve, float ball liquid level sensor, suction hose bottom valve, centrifugal pump motor is connected with DCS controller respectively with the magnetic valve being arranged on irrigation pipe.
2. catch pit automatic drainage control device according to claim 1, is characterized in that, described liquid level sensor is provided with high and low liquid level induction point, and in the time that water level arrives high or low liquid level induction point, liquid level signal is sent to DCS controller by liquid level sensor.
3. catch pit automatic drainage control device according to claim 1, is characterized in that, is provided with the timer of configuration in described DCS controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520987860.9U CN205259346U (en) | 2015-12-03 | 2015-12-03 | Sump pit automatic drainage controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520987860.9U CN205259346U (en) | 2015-12-03 | 2015-12-03 | Sump pit automatic drainage controlling means |
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| Publication Number | Publication Date |
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| CN205259346U true CN205259346U (en) | 2016-05-25 |
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| CN201520987860.9U Active CN205259346U (en) | 2015-12-03 | 2015-12-03 | Sump pit automatic drainage controlling means |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092228A (en) * | 2017-06-30 | 2017-08-25 | 合肥贺财工程项目管理有限公司 | A kind of civil engineering project building site drainage management system |
| CN110296869A (en) * | 2019-07-30 | 2019-10-01 | 广船国际有限公司 | A kind of scientific investigation seawater sampling system and ship |
| CN113136242A (en) * | 2020-01-17 | 2021-07-20 | 中国石油天然气股份有限公司 | Oil storage tank dewatering system |
| CN113431786A (en) * | 2021-07-01 | 2021-09-24 | 中船澄西船舶修造有限公司 | Independent bilge water control system |
| CN117145627A (en) * | 2023-10-26 | 2023-12-01 | 潍柴动力股份有限公司 | Drainage device of intercooler of engine and control method thereof |
-
2015
- 2015-12-03 CN CN201520987860.9U patent/CN205259346U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092228A (en) * | 2017-06-30 | 2017-08-25 | 合肥贺财工程项目管理有限公司 | A kind of civil engineering project building site drainage management system |
| CN110296869A (en) * | 2019-07-30 | 2019-10-01 | 广船国际有限公司 | A kind of scientific investigation seawater sampling system and ship |
| CN113136242A (en) * | 2020-01-17 | 2021-07-20 | 中国石油天然气股份有限公司 | Oil storage tank dewatering system |
| CN113136242B (en) * | 2020-01-17 | 2023-04-07 | 中国石油天然气股份有限公司 | Oil storage tank dewatering system |
| CN113431786A (en) * | 2021-07-01 | 2021-09-24 | 中船澄西船舶修造有限公司 | Independent bilge water control system |
| CN117145627A (en) * | 2023-10-26 | 2023-12-01 | 潍柴动力股份有限公司 | Drainage device of intercooler of engine and control method thereof |
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