CN2612973Y - Dynamic interactively running liquid level controller - Google Patents
Dynamic interactively running liquid level controller Download PDFInfo
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- CN2612973Y CN2612973Y CN 03256460 CN03256460U CN2612973Y CN 2612973 Y CN2612973 Y CN 2612973Y CN 03256460 CN03256460 CN 03256460 CN 03256460 U CN03256460 U CN 03256460U CN 2612973 Y CN2612973 Y CN 2612973Y
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Abstract
A driving alternative performance liquid level controlling device comprises two groups of multi-stage liquid level detectors respectively equipped on the upper and lower water tower, two groups of pumps respectively equipped from the lower water tower for water pumping to the upper water tower, a pump connected with the liquid level detector and a mini controlling circuit controlling the performance respectively, wherein the mini controlling circuit comprises mini processer, an over burdening detecting circuit, a motor phase wanting detecting circuit and a plurality groups of indicating lamps and the like. In addition to that the mini controlling circuit controls two pumps for alternative performance to control the liquid level of the upper and lower water tower, when the liquid level detector is broken or the motor is overburden or phase wanting, the device mentioned above can all automatically detect and touch the alarming and the alarming lamp.
Description
Technical field
The utility model relates to a kind of fluid level control device, relates in particular to a kind ofly to make two groups of pump alternate-runnings controlling upper and lower water tower liquid level, and the fluid level control device of the mutual running of power of further monitoring detecting, Power Component working condition.
Background technology
According to relevant statutory regulations, building more than certain number of plies must set up upper and lower water tower 81,82 (as shown in Figure 5) separately at bottom and top layer, it is that tap water is introduced water tower 82 down, utilize power packages A, the B comprise motor and pump that tap water is evacuated to the last water tower 81 of top layer again, dally with motor during preventing to cut off the water and cause danger.
Again by finding out among Fig. 5, be arranged with multistage liquid level detector 83,84 in the upper and lower water tower 81,82, when last water tower 81 middle water levels are lower than a certain liquid level, promptly detected by a liquid level detector 83 wherein, and starting a wherein power packages A entry into service, it is additional that the water storages in the water tower 82 down are evacuated to water tower 81, when treating down that water tower 82 water levels are lower than a certain liquid level, to detect by another liquid level detector 84, and make power packages A shut down.
When water tower 82 water levels are higher than a certain liquid level because of water inlet instantly, then will start another power packages B water is evacuated to water tower 81, water level is higher than certain liquid level time side and makes this power packages B shut down in last water tower 81.
Can obviously find out by above-mentioned motion flow, two power packages A, B do the alternative expression running by the water level of the upper and lower water tower 81,82 of two liquid level detectors, 83,84 detectings, because two power packages A, B are the runnings of alternative expression and non-standing, so can reduce the probability of its fault, when wherein a power packages breaks down, can force to start another power packages continuous running, to keep normal water supply.
Though and aforementioned control device can make two power packages alternate-runnings,, still there is following shortcoming to reduce its probability of failure:
1. only possess simple alternately handoff functionality: aforesaid control device is to utilize the detecting function of electromagnetic switch fluid,matching bit detector to control two power packages to do the alternative expression running, but except that this alternate-running function, do not have any supervisory function bit, the overload that general power-equipment occurs easily, leaky, though can detect by the excess current residual current circuit breaker of power end, but it only provides simple outage measure, when the general user cuts off the electricity supply for it and is unknown, but its possibility must be waited until the anhydrous time spent and can learn aforesaid outage phenomenon, and is obviously very inconvenient for the user.
Again, except that aforesaid overload, leaky, " owe phase " and also be the frequent abnormal occurrence that occurs of motor, general alternating current motor is to drive with three-phase supply, when wiring is become flexible or rupture, the phase situation promptly occurs owing, owe at power supply under the state of phase, though motor can turn round reluctantly, will cause the severe attrition of motor, and existing control device is also powerless for this phenomenon.
Moreover, aforementioned control device mainly is to utilize the liquid level detector conduct whether to start the foundation of power packages, the possibility yet liquid level detector itself also breaks down, when liquid level detector breaks down, can't detect the correct liquid level in the water tower, certainly will influence the normal water supply function, and existing control device also lacks solution to this phenomenon.
2. emergency response ability is not good: as described in preceding taking off, existing alternate-running control device is when a power packages breaks down therein, can manual mode forces to start another power packages running and keep normal water supply.In other words, existing control device does not have automatic shifting function, when one of them breaks down when two power packages, its water system of drawing water is promptly stopped fully, it must utilize manually mode to force the still normal power packages of startup, could keep normal operation reluctantly, and this situation must could be discovered after stopping to supply water still by the user, and bring inconvenience this moment already.
From the above, existing power alternate-running control device only possesses simple alternately handoff functionality, all powerless for the fault that power-equipment or detection components may occur, and when wherein a power packages breaks down, another power packages that also can't automatically switch existing control device turns round, no matter so all not desirable to the greatest extent in practicality or security, and be further improved.
The utility model content
In order to overcome the above-mentioned shortcoming that the mutual fluid level control device that turns round of available dynamic exists, the utility model provides the fluid level control device of the mutual running of a kind of improved power, its may command two power packages alternate-runnings are to control upper and lower water tower liquid level, and synchronization monitoring detecting, Power Component working condition, when a power packages breaks down therein, can automatically switch by another power packages continuous running, and reach perfect control monitoring purpose.The utility model is controlled two power packages by the micro-control circuit and is done alternative expression running, controlling the liquid level of upper and lower water tower, when a power packages fault wherein, can force to start another power packages running to keep regular event by the automatic switchover of micro-control circuit; When liquid level detector fault or motor overload, owe phase time, all can detect automatically and touch alarm and warning lamp.Whether the liquid level height and the power packages that can directly disclose upper and lower water tower by control panel transship, owe to equate information, judge the working condition and the actual water storage situation of control device to make things convenient for the user.
The technical scheme that its technical matters that solves the utility model adopts is:
The fluid level control device of the mutual running of a kind of power, it is characterized in that, comprise a micro-control circuit, two multistage liquid level detectors, two power packages, wherein the micro-control circuit comprises that a microprocessor, an I/O unit, two power switch circuits, two owe phase circuit for detecting, overload and electric leakage signal change-over circuit, a circuit for alarming, a liquid level signal change-over circuit and a display unit; Described microprocessor is that to constitute signal by I/O unit and bus and aforementioned each circuit online; The input pin of microprocessor connects a key groups, for user's set-up function; This power switch circuit is controlled the motor power of two power packages; This two owes the three-phase supply that phase circuit for detecting input end is connected to motor respectively, and its output terminal is connected with microprocessor by the I/O unit; This overload is connected with set excess current residual current circuit breaker on the motor power end to obtain overload and electric leakage information with the electric leakage signal change-over circuit; This each input end of liquid level signal change-over circuit is connected with the metal probe of respectively organizing of two liquid level detectors respectively, and its output terminal is connected with microprocessor through the I/O unit.
The fluid level control device of the mutual running of aforementioned power, wherein key groups comprises two groups of ON, OFF key, manipulated key and three groups of automatic keys, wherein two groups of ON, OFF keys are controlled the running of two power packages respectively, manipulated key is to be connected with two power packages by the micro-control circuit, make this two power packages be converted to manual control, three groups of automatic keys are indivedual or mutual the startup for setting two power packages then.
The fluid level control device of the mutual running of aforementioned power, wherein power switch circuit is made up of two triodes and a relay respectively, wherein transistor base is to be connected with microprocessor through the I/O unit, and relay then is connected to the motor of two power packages respectively, opens and closes to control its power supply.
The fluid level control device of the mutual running of aforementioned power, wherein two owe the phase circuit for detecting and form by five triodes and a photo-coupler respectively, wherein two owe to be arranged with a Zener diode on first transistor base of phase circuit for detecting, and three diodes in parallel respectively and three resistance, wherein three resistance are held in addition and are connected respectively with two groups of motor three-phase supply respectively.
The fluid level control device of the mutual running of aforementioned power, wherein display unit sets up light emitting diode separately on a plurality of transistor collectors, and wherein each transistor base is connected to microprocessor through the I/O unit.
The fluid level control device of the mutual running of aforementioned power, wherein circuit for alarming is to be connected with a hummer at a transistor collector, transistor base is connected with microprocessor.
The fluid level control device of the mutual running of aforementioned power, wherein overload and electric leakage signal change-over circuit are made up of three photo-couplers, and these three photo-coupler input ends are connected with the excess current residual current circuit breaker, and its output terminal then is connected to microprocessor by the I/O unit.
The fluid level control device of the mutual running of aforementioned power, wherein the liquid level signal change-over circuit is to set up photo-coupler separately on a plurality of transistor emitters, transistor base is connected with the metal probe of respectively organizing on two liquid level detectors; Each photo-coupler output terminal is connected with microprocessor through the I/O unit.
The fluid level control device of the mutual running of aforementioned power, wherein key groups and display unit are connected with a control panel, owing phase, transship phenomenon with set-up function and demonstration water level, liquid level detector function and motor respectively.
The fluid level control device of the mutual running of aforementioned power, wherein control panel is located on the case lid of a control box, to be convenient to range estimation.
The utlity model has following advantage:
1. full-automatic control: as previously mentioned, the utility model is by two power packages alternate-runnings under normal conditions, to reduce the probability of failure of motor, but when wherein a power packages still breaks down, then the micro-control circuit still can automatically switch by another power packages continuous running, and do not influence normal water supply, and will give the alarm simultaneously, notify the user to come to handle.
2. safe: whether the utility model overload or leakage phenomenon occur except that detecting power packages at power unit via the excess current residual current circuit breaker, also owe phase circuit for detecting detection motor power simultaneously and the phase situation whether occurs owing with one, to guarantee that motor turns round under normal electric power supply, prevent that it is impaired owing to turn round reluctantly under the phase state.
3. easy access: the utility model is established a control panel on control box, every water level and working condition all show on it, when the user notifies when coming to handle for alarm song, can show by the cresset on the control panel rapidly learn the parts that break down that maintenance is very convenient.
4. of many uses: the utility model also can be used for aspects such as wastewater treatment and unwatering system, so range of application is very extensive except that the water system that can be used for general building user.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an organigram of the present utility model.
Fig. 2 is a detailed circuit diagram of the present utility model.
Fig. 3 is a control panel synoptic diagram of the present utility model.
Fig. 4 is an embodiment schematic appearance of the present utility model.
Fig. 5 is the synoptic diagram of existing building water tower and pumping system.
The number in the figure explanation:
12 times water towers of water tower on 11
13,14 liquid level detectors, 20 microprocessors
131～135 metal probe 21I/O unit
141～144 metal probes, 27 circuit for alarming
22,23 power switch circuits, 28 key groups
24,25 owe the phase circuit for detecting
26 overload and electric leakage signal change-over circuit 40 display units
30 liquid level signal change-over circuits, 50 control panels
Water tower on 60 control boxs 81
83,82 times water towers of 84 liquid level detectors
Embodiment
At first see also shown in Figure 1, be structural representation of the present utility model, but it includes power packages A, B and two multistage liquid level detectors 13,14 that are divided into upper and lower water tower 11,12 of two groups of alternate-runnings, this power packages A, B are made up of pump A1, B1 and motor A2, B2 respectively, this pump A1, B1 are connected to upper and lower water tower 11,12 with water pipe respectively, when motor A2, B2 turn round, pump A1, B1 will draw water in following water tower 12 respectively and deliver to water tower 11.
Two multistage liquid level detectors 13,14 are respectively in order to detect certain water level of upper and lower water tower 11,12, the reference of whether turning round as power packages A, B, in the present embodiment, the liquid level detector of being located in the water tower 13 13 has the metal probe 131～135 that five group length are successively decreased, each is organized metal probe 131～135 and will contact with water when last water tower 11 is in different height of water level and constitute conducting, to produce the detection signal of different water levels respectively.
The liquid level detector of being located at down in the water tower 12 14 has the metal probe 141～144 that four group length are successively decreased, each is organized metal probe 141～144 and contacts with water when down water tower 12 is in different height of water level and constitute conducting, and produces the detection signal of different water levels respectively.
Moreover, aforementioned two power packages A, B turns round in an alternating manner, and two liquid level detectors 13,14 detecting gained actual water levels also will be shown by suitable interface arrangement, about two power packages A, B and liquid level detector 13, the 14 mutual runnings that reach, functions such as water level demonstration are to finish by the work of a micro-control circuit, except that aforementioned functional, this micro-control circuit still can provide other as " the power packages fault automaticallyes switch and alarm function ", " motor overload detecting alarm function ", " motor owes to detect mutually alarm function " reaches " special water level start synchronously two power packages functions " etc., below further specifies as follows at the detailed circuit and the principle of work of this micro-control circuit:
See also shown in Figure 2ly, this micro-control circuit comprises that a microprocessor 20, an I/O unit 21, two power switch circuits 22,23, two owe phase circuit for detecting 24,25, overload and electric leakage signal change-over circuit 26, a circuit for alarming 27, a liquid level signal change-over circuit 30 and a display unit 40; Wherein:
This microprocessor 20 is connected with aforementioned each circuit by I/O unit 21 and bus, and is online to constitute signal; Microprocessor 20 connects a key groups 28 at input pin P1.0～P1.7, and this key groups 28 comprises two ON, OFF key, manipulated key and three automatic keys, wherein two ON, OFF keys control two power packages A, B respectively running whether.Manipulated key is converted to manual control by micro-control circuitorder two power packages A, B, and three automatic keys set respectively then that power packages A starts automatically, power packages B starts automatically and power packages A, B autostart function.
Motor A2, the B2 power supply of this power switch circuit 22,23 in order to control two power packages A, B, it is respectively by two groups of triode Q8, Q9, Q10, Q11 and a relay K 1, K2 form, wherein triode Q8, Q10 are connected with microprocessor 20 through I/O unit 21 with base stage, so that whether control its conductings by microprocessor 20, again, relay K 1, K2 then are connected to motor A2, the B2 of power packages A, B respectively, open and close to control its power supply.
This two owes phase circuit for detecting 24,25 respectively by five triode Q17～Q21, Q13～Q16, and Q22 and a photo-coupler U13, U14 form, wherein:
The two first triode Q17, the Q13 base stages of owing phase circuit for detecting 24,25 are arranged with a Zener diode ZD1, ZD2, and three diode D7～D9, D4～D6 in parallel respectively and three resistance R 91, R93, R95, R67, R69, R71, three resistance R 91 wherein, R93, R95, R67, R69, R71 end in addition are connected respectively with the three-phase supply of two motor A2, B2 by joint JP2.When three-phase supply wherein one mutually or an above mutually wiring fracture or loosening and owe phase time, will detect by aforementioned 24,25 of the phase circuit for detecting of owing respectively, and backhaul signals, so that produce the alert notification user and is come to overhaul by the technician to microprocessor 20.
This groundwork principle of owing phase circuit for detecting 24,25 is that its first triode Q17, Q13 base stage are respectively through three resistance R 91, R93, R95, R67, R69, R71 is connected on the three-phase supply, all do not owe phase as three-phase supply, then the current potential that produces on the first triode Q17, Q13 base stage will be higher than the forward voltage of Zener diode ZD1, ZD2, therefore, the first triode Q17, Q13 are with conducting, and then make terminal photo-coupler U13, U14 work, and by photo-coupler U13, U14 through the I/O unit 21 loopbacks, one signal to microprocessor 21.
Wherein one owe phase time mutually when three-phase supply, then at power supply only under the state of surplus two-phase, motor A2, though B2 can still turn round reluctantly, but can cause severe attrition, when this phenomenon takes place, pass through because of no current with this resistance of owing power supply connection mutually, cause the first triode Q17, the Q13 base potential descends and is lower than Zener diode ZD1, the forward voltage of ZD2, so first triode Q17, Q13 ends, Mo Duan photo-coupler U13 then, U14 also quits work, this information is detected by microprocessor 21 then immediately, and by a power switch circuit 22 wherein, 23 motors of owing phase with power supply cut out, and drive circuit for alarming 27 and give the alarm, notify the user maintenance of coming.
Take place aforementioned when owing the phase phenomenon, the micro-control circuit promptly quits work from the power packages that command of execution power supply is owed phase, promptly, two power packages A, B do not remake alternate-running, when last water tower 11 is lower than a certain water level and must intakes, the micro-control circuit promptly directly drives the normal power packages running of this group power supply, and need not utilize manual mode of operation.
This circuit for alarming 27 mainly is to connect a hummer BZ1 at a triode Q12 collector, triode Q12 base stage is connected to microprocessor 20, when microprocessor 20 reception motors are owed phase, overload or electric leakage information, except that closing unusual power packages, and on the triode Q12 of circuit for alarming 27 base stage, produce noble potential, produce alarm to drive hummer BZ1.
About aforementioned overload and electric leakage information is to be obtained by set excess current residual current circuit breaker on the power end, this excess current residual current circuit breaker will be cut off the power supply when overload or electric leakage take place motor automatically, the utility model then utilizes an overload to obtain this overload or electric leakage information with electric leakage signal change-over circuit 26 from this excess current residual current circuit breaker, and delivers to microprocessor 20.This overload and electric leakage signal change-over circuit 26 are made up of three photo-coupler U15～U17, these three photo-coupler U15～U17 input ends are to be connected to excess current residual current circuit breaker (not shown) by joint JP5, and its output terminal then is connected to microprocessor 20 by I/O unit 21.
Moreover, this liquid level signal change-over circuit 30 mainly is to set up photo-coupler U6～U12 separately on a plurality of triode Q1～Q7 emitter, wherein triode Q1～Q7 base stage is connected (metal probe the 135, the 144th at these two liquid level detectors, 13,14 lowest water level places, direct ground connection) by joint JP8 with the metal probe 131～134,141～143 of respectively organizing on two liquid level detectors 13,14, to obtain its liquid level detecting signal.
Each photo-coupler U6～U12 output terminal is connected with microprocessor 20 through I/O unit 21 again.
Utilize aforementioned liquid level detector 13,14 and liquid level signal change-over circuit 30 can detect the different water levels of upper and lower water tower 11,12, its water position status can show by display unit 40.
This display unit 40 is to set up LED 21～LED26, LED29～LED34 separately on a plurality of triode Q23～Q28, Q31～Q36 collector, and wherein each triode Q23～Q28, Q31～Q36 base stage is connected to microprocessor 20 through I/O unit 21.
Moreover, overload whether occurring or owe the phase phenomenon with four diode displaying, two power packages A, B respectively on the control panel 50, a light emitting diode (SENSOR) shows whether two liquid level detectors 13,14 are normal.
And aforementioned control panel 50 is case lid surfaces (as shown in Figure 4) of being located at a control box 60, by above-mentioned design, control panel 50 carries out outside the function setting for the user divided by key groups 28, demonstration by multi-group light-emitting diode, can make the water level situation, overload whether occurs, owe to equate phenomenon, all can be by coming into plain view on the control panel 50.
Still see also shown in Figure 3, in the aforementioned keys group 28, be pressed, promptly represent to do single group running by power packages A as " A automatically " key, when pressing " B automatically " key, expression is done single group running by power packages B, when pressing " A+B automatically " key, then makes alternate-running by power packages A, B, under general state, be with the running of power packages A, B alternant, its drive manner is to cooperate aforementioned micro-control circuit to be controlled by two liquid level detectors 13,14, below is described in detail as follows at its principle of work:
When last water tower 11 water levels are lower than the metal probe 133 of liquid level detector 13 when following, the lack of water lamp is bright, and notify the wherein power packages A entry into service of micro-control circuit start simultaneously, to descend water tower 12 inner storing waters to be evacuated to water tower 11, when last water tower 11 water levels reach metal probe 132, the full water lamp is bright, and is shut down by micro-control circuitorder power packages A.
When last water tower 11 water levels are lower than metal probe 133 once again, the lack of water lamp is bright, and the micro-control circuit will alternately start another power packages B running this moment, will descend water tower 12 water storages to be evacuated to water tower 11, treat that water tower 12 is higher than metal probe 132, promptly stops pumping.
Aforementioned activities is to turn round alternately under normal condition, when liquid level detector 13,14 itself breaks down, still can detect and produce alarm by the micro-control circuit.
If last water tower 11 water levels are higher than metal probe 132, but metal probe 132 faults, then water level still continues to rise, when water level is higher than metal probe 133, the information that metal probe 133 contacts with water is promptly sent the micro-control circuit back to, even the micro-control circuit shuts down with power packages B, and makes SENSOR and spilling water lamp bright, and produce alarm by circuit for alarming 27, to inform the user.When the user comes, can directly overhaul then by the SENSOR of control panel 50 and the bright water tower 11 of learning of spilling water lamp to anomalous sea level at liquid level detector 13.
In following water tower 12 parts, when its water level is lower than the metal probe 143 of liquid level detector 14 when following, the lack of water lamp is bright, shows exsiccosis, and the power packages of satisfying in the order running stops, treat that water level rises to contacting metal probe 143, to switch by the running of another power packages, and continue water is evacuated to water tower 11, following water tower 12 inflows heighten and when making water level be higher than metal probe 142, the micro-control circuit will make two power packages A, B move simultaneously this moment, rapidly water is evacuated to water tower 11.When following water tower 12 water levels rose to and contact with metal probe 141, it is bright that then the micro-control circuit can make the spilling water lamp, and produce the alert notification user maintenance of coming simultaneously.
From the above, the utility model is under general normal condition, be to make alternate-running by two power packages A, B, when wherein a power packages breaks down temporarily, the micro-control circuit will force another power packages of startup to keep normal operation automatically, but can start alarm simultaneously, notify the user to come to overhaul the power packages that breaks down.
In sum, the utility model can obtain foregoing every advantage really, and it is compared with existing fluid level control device has remarkable efficacy, has novelty, creativeness, practicality, meets the important document of novel patent, so file an application in accordance with the law.
Claims (10)
1. the fluid level control device of the mutual running of a power, it is characterized in that, comprise a micro-control circuit, two multistage liquid level detectors, two power packages, wherein the micro-control circuit comprises that a microprocessor, an I/O unit, two power switch circuits, two owe phase circuit for detecting, overload and electric leakage signal change-over circuit, a circuit for alarming, a liquid level signal change-over circuit and a display unit;
Described microprocessor is that to constitute signal by I/O unit and bus and aforementioned each circuit online;
The input pin of microprocessor connects a key groups;
This power switch circuit is controlled the motor power of two power packages;
This two owes the three-phase supply that phase circuit for detecting input end is connected to motor respectively, and its output terminal is connected with microprocessor by the I/O unit;
This overload is connected with set excess current residual current circuit breaker on the motor power end with the electric leakage signal change-over circuit;
This each input end of liquid level signal change-over circuit is connected with the metal probe of respectively organizing of two liquid level detectors respectively, and its output terminal is connected with microprocessor through the I/O unit.
2. according to the mutual fluid level control device that turns round of the described power of claim 1, it is characterized in that described key groups comprises two groups of ON, OFF key, manipulated key and three groups of automatic keys, wherein two groups of ON, OFF keys are controlled the running of two power packages respectively, manipulated key is to be connected with two power packages by the micro-control circuit, make this two power packages be converted to manual control, three groups of automatic keys are indivedual or mutual the startup for setting two power packages then.
3. according to the mutual fluid level control device that turns round of the described power of claim 1, it is characterized in that described power switch circuit is made up of two triodes and a relay respectively, wherein transistor base is to be connected with microprocessor through the I/O unit, and relay then is connected to the motor of two power packages respectively.
4. according to the mutual fluid level control device that turns round of the described power of claim 1, it is characterized in that described two owe the phase circuit for detecting and are made up of five triodes and a photo-coupler respectively, wherein two owe to be arranged with a Zener diode on first transistor base of phase circuit for detecting, and three diodes in parallel respectively and three resistance, wherein three resistance are held in addition and are connected respectively with two groups of motor three-phase supply respectively.
5. according to the fluid level control device of the mutual running of the described power of claim 1, it is characterized in that described display unit sets up light emitting diode separately on a plurality of transistor collectors, wherein each transistor base is connected to microprocessor through the I/O unit.
6. according to the fluid level control device of the mutual running of the described power of claim 1, it is characterized in that described circuit for alarming is to be connected with a hummer at a transistor collector, transistor base is connected with microprocessor.
7. according to the mutual fluid level control device that turns round of the described power of claim 1, it is characterized in that described overload and electric leakage signal change-over circuit be made up of three photo-couplers, these three photo-coupler input ends are connected with the excess current residual current circuit breaker, and its output terminal then is connected to microprocessor by the I/O unit.
8. according to the fluid level control device of the mutual running of the described power of claim 1, it is characterized in that described liquid level signal change-over circuit is to set up photo-coupler separately on a plurality of transistor emitters, transistor base is connected with the metal probe of respectively organizing on two liquid level detectors;
Each photo-coupler output terminal is connected with microprocessor through the I/O unit.
9. according to the fluid level control device of claim 1 or the mutual running of 2 described power, it is characterized in that described key groups and display unit are connected with a control panel.
10. according to the fluid level control device of the mutual running of the described power of claim 9, it is characterized in that described control panel is located on the case lid of a control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256460 CN2612973Y (en) | 2003-04-23 | 2003-04-23 | Dynamic interactively running liquid level controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256460 CN2612973Y (en) | 2003-04-23 | 2003-04-23 | Dynamic interactively running liquid level controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2612973Y true CN2612973Y (en) | 2004-04-21 |
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ID=34169699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03256460 Expired - Fee Related CN2612973Y (en) | 2003-04-23 | 2003-04-23 | Dynamic interactively running liquid level controller |
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| Country | Link |
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| CN (1) | CN2612973Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541423A (en) * | 2012-07-16 | 2014-01-29 | 杨志江 | Self-cleaning type sewage lifting device |
| CN104514243B (en) * | 2013-09-27 | 2016-09-14 | 贵州中烟工业有限责任公司 | Control system for left unguarded water tower |
| CN106502282A (en) * | 2016-09-27 | 2017-03-15 | 大庆中蓝石化有限公司 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
-
2003
- 2003-04-23 CN CN 03256460 patent/CN2612973Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541423A (en) * | 2012-07-16 | 2014-01-29 | 杨志江 | Self-cleaning type sewage lifting device |
| CN104514243B (en) * | 2013-09-27 | 2016-09-14 | 贵州中烟工业有限责任公司 | Control system for left unguarded water tower |
| CN106502282A (en) * | 2016-09-27 | 2017-03-15 | 大庆中蓝石化有限公司 | Tower tank liquid level dash adjustment system in a kind of big processing capacity petrochemical plant |
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