CN1888997A - Liquid level water level automatic control system - Google Patents
Liquid level water level automatic control system Download PDFInfo
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- CN1888997A CN1888997A CN 200510027433 CN200510027433A CN1888997A CN 1888997 A CN1888997 A CN 1888997A CN 200510027433 CN200510027433 CN 200510027433 CN 200510027433 A CN200510027433 A CN 200510027433A CN 1888997 A CN1888997 A CN 1888997A
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Abstract
The invention relates to the control system for the water level of the poll fluid level. The pump is installed in the bottom of the pool. The high level probe in the high level surface is installed in the in-wall of the pool and the low level is in the low level surface, the reference point probe is in the bottom of the pool lower than the low level surface which is the lowest potential. There is a signal transmission wire connected to the auto water level controller. When the water level reaches the highest or the lowest, the probe will contact the water surface to form the electric loop and change the output potential to make the start or stop the stating relay or the stop relay to start or stop the pump to drain or pump the water, so it can control the water level automatically. The invention has decreased the power strength and improved the working condition.
Description
One, technical field
The present invention relates to the control method of pond liquid level position.
Two, background technology
In commercial production or daily life, people often need control the position of container or pond liquid level in specialized range, can not be too high or too low.When liquid level reaches the highest assigned position or is lower than the minimum regulatory position, just must control liquid level water level.With the draining is example, and usual way is at container or basin bottom one water pump to be installed, and when water level reaches peak level, starts submersible pump immediately and carries out draining, water is detached outside container or the pond, with timely reduction water level.Simultaneously must pay close attention to water level can not be low excessively, because water level is low excessively, and untimely switching off the pump, water pump works on, and wastes energy on the one hand, on the other hand because of the bad damage that very easily causes of dispelling the heat.This control method must be opened at the scene or switched off the pump by the operator, so the working time is long, labour intensity is big, inconvenient operation, and also water level control is inaccurate, causes producing the spilling water accident because of negligence of operation easily.In order to address this problem, adopt liquid level water level automatic control system, according to the water level height, realize opening automatically or switching off the pump carrying out control water level, safe and reliable, easy and simple to handle, save manpower, improved condition of work, reduced labour intensity.
Three, summary of the invention
Ultimate principle of the present invention is that high and low water-level probe is installed in container or pond, when liquid level water level reaches the highest or minimum, form electric loop by probe and water body resistance, through the hysteresis voltage comparer, with the change transitions of water level is the variation of current potential, relay in the control circuit is in adhesive or off-state, thereby reaches automatic unlatching or switch off the pump, and controls the purpose of liquid level water level automatically.
The present invention is achieved in that liquid level water level automatic control system, by the pond, water pump, drinking-water pipe is formed, water pump is installed on inner bottom part position, pond, on pool inner wall, be separately installed with the high water stage probe, low-water level probe and reference point probe, the high water stage probe is positioned at place, liquid level high water stage plane, the low-water level probe is arranged in place, liquid level low-water level plane, pond, the reference point probe is positioned at the basin bottom current potential lowest part that is lower than the low-water level plane, the high water stage probe, low-water level probe and reference point probe have a high water stage signal transmssion line respectively, low-water level signal transmssion line and reference point transmission line link with automatic controller for water level.
In above-mentioned liquid level water level automatic control system, automatic controller for water level stops voltage comparator by the trigger voltage comparer; the start-up control transistor stops oxide-semiconductor control transistors, starting relay; slew relay starts the protection diode, stops to protect diode and function resistance to form.
In above-mentioned liquid level water level automatic control system, function resistance is by divider resistance R1, R2, R3, R4, R7, R8, R9, R10, positive feedback resistor R5, R11, and current-limiting resistance R6, R12 form.
Because liquid level water level automatic control system does not need to carry out artificial execute-in-place, thus realized the automatic control of pond liquid level water level, safe and reliable, easy and simple to handle, improved condition of work, reduced labour intensity.
Four, description of drawings
Fig. 1 is the liquid level water level automatic control system synoptic diagram; Fig. 2 is the automatic controller for water level electrical schematic diagram; Fig. 3 is water pump automatic switch electric control theory figure.
Among the figure, 1 is the pond, and 2 is the high water stage plane; 3 are the low-water level probe, and 4 is the low-water level plane, and 5 are the reference point probe; 6 is the reference point transmission line, and 7 is water pump, and 8 are the high water stage probe; 9 is drinking-water pipe, and 10 is the high water stage signal transmssion line, and 11 is automatic controller for water level; 12 is the low-water level signal transmssion line; 13 is the trigger voltage comparer, and 14 is the start-up control transistor, and 15 is starting relay; 16 for starting the protection diode; 17 for stopping voltage comparator, and 18 for stopping oxide-semiconductor control transistors, and 19 is slew relay; 20 for stopping to protect diode; 21 is A.C. contactor Third Mate main contacts, and 22 is the A.C. contactor auxiliary contact, and 23 is ac contactor coil.
Five, preferred forms
Preferred forms of the present invention is provided by following accompanying drawing.
Referring to Fig. 1,2,3, the automatic drainage control system of liquid level water level is made up of pond 1, water pump 7, drinking-water pipe 9, and water pump 7 is installed on the bottom of pond 1 inwall, high water stage probe 8, one low-water level the probe 3 and one reference point probe made from stainless steel 5 is installed on 1 inwall of pond, high water stage probe 8 is positioned at 2 places, liquid level high water stage plane, and low-water level probe 3 is arranged in 4 places, 1 liquid level low-water level plane, pond, and reference point probe 5 is positioned at the basin bottom current potential lowest part that is lower than the low-water level plane.High water stage probe 8, low-water level probe 3 and reference point probe 5 have a high water stage signal transmssion line 10, low-water level signal transmssion line 12, reference point transmission line 6 to link with automatic controller for water level 11 respectively.Automatic controller for water level 11 stops voltage comparator 17 (A2) by trigger voltage comparer 13 (A1), and start-up control transistor 14 (Q1) stops oxide-semiconductor control transistors 18 (Q2), starting relay 15 (KA1), and slew relay 19 (KA2) and function resistance are formed.Trigger voltage comparer 13 (A1) and the employing model that stops voltage comparator 17 (A2) are the LM324 four-operational amplifier, with two operational amplifiers wherein, start-up control transistor 14 (Q1) and the model that stops oxide-semiconductor control transistors 18 (Q2) are power triode transistor in the 9013NPN type, it is the low-voltage relay of 12V that the specification of starting relay 15 (KA1) and slew relay 19 (KA2) all adopts coil voltage, the contact be one pair often open with one pair normally closed, function resistance all adopts the 1/4W metalfilmresistor, numerical value is R1 (10K), R2 (24K), R3 (10K), R4 (10K), R5 (47K), R6 (1K), R7 (10K), R8 (10K), R9 (10K), R10 (24K), R11 (100K), R12 (1K).Trigger voltage comparer 13 (A1) and the operating voltage that stops voltage comparator 17 (A2) are+5V, and the operating voltage of starting relay 15 (KA1) and slew relay 19 (KA2) is+12V.Constitute the startup automatic control circuit by A1, Q1, KA1, R1, R2, R3, R4, R5, R6, D5.Constitute by A2, Q2, KA2, R7, R8, R9, R10, R11, R12, D6 and to stop automatic control circuit.In starting automatic control circuit, reference voltage is provided for the in-phase input end of trigger voltage comparer 13 (A1) by the bleeder circuit that divider resistance R1, R2 form, the bleeder circuit that divider resistance R3, R4 form provides comparative voltage for the inverting input of trigger voltage comparer 13 (A1).When water level was lower than high water stage, high water stage probe 8 broke away from high water stage plane 2, and circuit A point current potential is higher than the B point, trigger voltage comparer 13 (A1) output low level, start-up control transistor 14 (Q1) ends, and starting relay 15 (KA1) is in release conditions, and this moment, water pump 7 was not worked.When the water level rising reaches high water stage, high water stage probe 8 contact with the water surface, owing to water body resistance is very little, makes the decline of circuit A point current potential, be lower than B point current potential, trigger voltage comparer 13 (A1) output high level, by current-limiting resistance R6, start-up control transistor 14 (Q1) saturation conduction, starting relay 15 (KA1) is in attracting state, control circuit is connected, and this moment, water pump 7 startup drainings provided positive feedback voltage by R5 to the positive input of trigger voltage comparer 13 (A1) simultaneously.Along with decline of water table; high water stage probe 8 breaks away from the water surface; water body resistance is inoperative; circuit A point current potential recovers to rise and is higher than the B point, the A1 output low level, and Q1 ends; KA1 discharges; the peak inverse voltage that the KA1 coil produces when discharging discharges by starting protection diode 16 (D5), and form holding circuit by A.C. contactor auxiliary contact 22 (KM) this moment, and water pump 7 is still worked.In stopping automatic control circuit, reference voltage is provided for the inverting input that stops voltage comparator 17 (A2) by the bleeder circuit that divider resistance R7, R8 form, the bleeder circuit that divider resistance R9, R10 form provides comparative voltage for the in-phase input end that stops voltage comparator 13 (A1).At ordinary times, low-water level probe 3 is immersed in the water, because water body resistance is very little, therefore D point current potential is lower than the C point, stop voltage comparator 17 (A2) output low level, stop oxide-semiconductor control transistors 18 (Q2) and end, slew relay 19 (KA2) is in release conditions, its normally closed contact is connected, and start-up circuit is not had influence.When decline of water table is popped one's head in 3 the time to being lower than low-water level, low-water level probe 3 breaks away from the water surface, D point current potential is higher than the C point, stops voltage comparator 17 (A2) output high level this moment, by current-limiting resistance R12, stop oxide-semiconductor control transistors 18 (Q2) saturation conduction, slew relay 19 (KA2) is in attracting state, and its normally closed contact disconnects, and cuts off the control circuit of ac contactor coil 23 (KM), A.C. contactor Third Mate main contacts 21 (KM) disconnects, and water pump 7 quits work.Provide positive feedback voltage by R11 to the positive input that stops voltage comparator 17 (A2) simultaneously.Reach low-water level and pop one's head in 3 the time when water level rises once more; D point current potential is lower than the C point; stop voltage comparator 17 (A2) output low level; stopping oxide-semiconductor control transistors 18 (Q2) ends; slew relay 19 (KA2) discharges; its normally closed contact is connected, and for draining is next time got ready, the peak inverse voltage that slew relay 19 (KA2) coil produces when disconnecting is by stopping to protect diode 20 (D6) to discharge.Like this, start-up control circuit and stop the control circuit alternation just constitutes automatic drainage control system, makes liquid level water level remain on the normal position.According to the water quality situation, high water stage probe 8, low-water level probe 3 and reference point probe 5 were once cleared up in per 2～3 months, to guarantee that electric conductivity is good.If pond 1 is a canister, then reference point probe 5 can omit, and reference point directly is connected on the container and gets final product.If starting relay among Fig. 3 15 (KA1) and slew relay 19 (KA2) contact are exchanged, just can constitute liquid level water level automatic loading water control system (for example automatic loading water of boiler and skyscraper water tank etc.), promptly when the water surface in the pond is lower than lowest water level, water pump 7 will start work automatically, the pond is gone in diversion, when setting high water stage, water pump 7 can quit work automatically.
Because native system does not need artificial execute-in-place, so can realize automatic draining control of water level in water pool or automatic loading water control have been improved condition of work, reduced labour intensity, easy and simple to handle, safe and reliable.
Claims (3)
1. liquid level water level automatic control system, by pond (1), water pump (7), drinking-water pipe (9) is formed, it is characterized in that water pump (7) is installed on inner bottom part position, pond (1), on the inwall of pond (1), be separately installed with high water stage probe (8), low-water level probe (4) and reference point probe (5), high water stage probe (8) is positioned at liquid level high water stage plane (2) and locates, low-water level probe (4) is arranged in liquid level low-water level plane, pond (1) (4) and locates, reference point probe (5) is positioned at the basin bottom current potential lowest part that is lower than the low-water level plane, high water stage probe (8), low-water level probe (4) and reference point probe (5) have a high water stage signal transmssion line (10) respectively, low-water level signal transmssion line (12) and reference point transmission line (6) link with automatic controller for water level (11).
2. liquid level water level automatic control system according to claim 1; it is characterized in that automatic controller for water level (11) is by trigger voltage comparer (13); stop voltage comparator (17); start-up control transistor (14); stop oxide-semiconductor control transistors (18), starting relay (15), slew relay (19); start protection diode (16), stop to protect diode (20) and function resistance to form.
3. liquid level water level automatic control system according to claim 1 and 2 is characterized in that function resistance by divider resistance R1, R2, R3, R4, R7, R8, R9, R10, positive feedback resistor R5, R11, and current-limiting resistance R6, R12 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100274337A CN100514239C (en) | 2005-06-30 | 2005-06-30 | Liquid level water level automatic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100274337A CN100514239C (en) | 2005-06-30 | 2005-06-30 | Liquid level water level automatic control system |
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| Publication Number | Publication Date |
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| CN1888997A true CN1888997A (en) | 2007-01-03 |
| CN100514239C CN100514239C (en) | 2009-07-15 |
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| CNB2005100274337A Active CN100514239C (en) | 2005-06-30 | 2005-06-30 | Liquid level water level automatic control system |
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| CN (1) | CN100514239C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102194607A (en) * | 2011-04-06 | 2011-09-21 | 北京大华无线电仪器厂 | Device for controlling switches of relays |
| CN102809974A (en) * | 2011-06-01 | 2012-12-05 | 上海工程技术大学 | Distributed liquid level monitoring system based on wireless detection |
| CN103262565A (en) * | 2010-10-19 | 2013-08-21 | 空中客车运作有限责任公司 | Diagnostic system, diagnosing method and housing component of lubricant container |
| CN103592177A (en) * | 2013-11-22 | 2014-02-19 | 山东大学 | Fluid-solid coupling model test water level automatic control system |
| CN104503492A (en) * | 2014-12-15 | 2015-04-08 | 武汉大学 | Water level regulating device of sealed water tank |
| CN107288209A (en) * | 2017-08-14 | 2017-10-24 | 淮南矿业(集团)有限责任公司 | Boiler room cesspool self-draining arrangement and its electric-control system |
| CN112515587A (en) * | 2020-10-23 | 2021-03-19 | 深圳市银星智能科技股份有限公司 | Liquid level state detection method, water tank assembly and robot |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3894240A (en) * | 1974-03-22 | 1975-07-08 | Simer Pump Company | Control circuit for maintaining a movable medium between limits |
| US4105367A (en) * | 1976-10-18 | 1978-08-08 | Sta-Rite Industries | Liquid level sensing circuit |
-
2005
- 2005-06-30 CN CNB2005100274337A patent/CN100514239C/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103262565A (en) * | 2010-10-19 | 2013-08-21 | 空中客车运作有限责任公司 | Diagnostic system, diagnosing method and housing component of lubricant container |
| CN103262565B (en) * | 2010-10-19 | 2017-06-13 | 空中客车运作有限责任公司 | The diagnostic system of lubricant container, diagnostic method and housing parts |
| CN102194607A (en) * | 2011-04-06 | 2011-09-21 | 北京大华无线电仪器厂 | Device for controlling switches of relays |
| CN102194607B (en) * | 2011-04-06 | 2013-12-11 | 北京大华无线电仪器厂 | Device for controlling switches of relays |
| CN102809974A (en) * | 2011-06-01 | 2012-12-05 | 上海工程技术大学 | Distributed liquid level monitoring system based on wireless detection |
| CN103592177A (en) * | 2013-11-22 | 2014-02-19 | 山东大学 | Fluid-solid coupling model test water level automatic control system |
| CN103592177B (en) * | 2013-11-22 | 2016-01-13 | 山东大学 | Fluid-wall interaction model test water level auto control system |
| CN104503492A (en) * | 2014-12-15 | 2015-04-08 | 武汉大学 | Water level regulating device of sealed water tank |
| CN107288209A (en) * | 2017-08-14 | 2017-10-24 | 淮南矿业(集团)有限责任公司 | Boiler room cesspool self-draining arrangement and its electric-control system |
| CN112515587A (en) * | 2020-10-23 | 2021-03-19 | 深圳市银星智能科技股份有限公司 | Liquid level state detection method, water tank assembly and robot |
| CN112515587B (en) * | 2020-10-23 | 2023-09-26 | 深圳银星智能集团股份有限公司 | Liquid level state detection method, water tank assembly and robot |
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| Publication number | Publication date |
|---|---|
| CN100514239C (en) | 2009-07-15 |
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Address after: 200432 No. 2636, military road, Shanghai Patentee after: Shanghai New Power Automotive Technology Co.,Ltd. Address before: 200432 No. 2636, military road, Shanghai Patentee before: SHANGHAI DIESEL ENGINE Co.,Ltd. |