CN105673183A - Liquid level automatic detection and power control device - Google Patents
Liquid level automatic detection and power control device Download PDFInfo
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- CN105673183A CN105673183A CN201610168158.9A CN201610168158A CN105673183A CN 105673183 A CN105673183 A CN 105673183A CN 201610168158 A CN201610168158 A CN 201610168158A CN 105673183 A CN105673183 A CN 105673183A
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- liquid level
- proximity switch
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- coolant
- judge module
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
Abstract
The invention discloses a liquid level automatic detection and power control device and belongs to the technical field of detection and control. The liquid level automatic detection and power control device can automatically detect the liquid level of cooling fluid in a water-cooling type cooling system before a vehicle is started, the step of manually checking the cooling fluid is omitted, the vehicle dispatching time is shortened, and a starting protection power device of an engine is limited on the condition of cooling fluid deficiency. In the using process after the vehicle is started, the liquid level automatic detection and power control device can detect the liquid level of the cooling fluid in real time and automatically judge whether the cooling fluid is sufficient or not; photoacoustic signals are given to a driver when the cooling fluid in the cooling system leaks to a certain extent; and the engine is controlled to automatically flame out if the cooling fluid in the cooling system continues leaking to the lowest limit so as to protect a power transmission device against damage. The liquid level automatic detection and power control device comprises an automatic detection and sensing device and a power control device, and is concise in structure, practical in function, easy to implement on an armored vehicle and convenient to use.
Description
Technical field
The invention belongs to detection and control technical field, relate to the automatically detection of cooling liquid measure and power set start before with operating control, it is possible to this device is used for water-cooling type cooling system vehicle.
Background technology
When its electromotor of vehicle (internal combustion engine) works, the mixed combustion gas temperature of combustor is up to 1730 to 2400 DEG C, the temperature that can make the heated parts such as its cylinder contacted, cylinder head and valve raises, mechanical strength reduces, thermal deformation possibly even occurs, destroys the fit clearance between part, cause part strong wear, time serious, it is also possible to part breaking accident occurs. High temperature not only also can cause cylinder wall machine oil to go bad, so as to lose lubricating function, and even coking; High temperature even also can cause electromotor volumetric efficiency to decline so that it is power reduces.
The too high hot stall caused of engine temperature, may result in vehicle and loses the job ability, directly affect the functional reliability of vehicle, economy and durability. Therefore, for avoiding causing hot stall because temperature is too high, all general equipped with a water-cooling type closed cooling system in current vehicle propulsion system. This cooling system, with water or liquid for medium, is driven by water pump, and after flowing through the water jacket of the heated components such as the cylinder sleeve of electromotor, cylinder cap and valve seating and absorbing heat, liquid temperature raises; After coolant flows into vaporizer again, the heat that release absorbs, liquid temperature is reduced to the level before heat absorption, is then return to pump intake; So go round and begin again, form the water circulation of cooling system; At electromotor and actuating device under Operation Conditions, the heat conducted by heated component is dispersed in time in surrounding in various different temperatures environment, makes electromotor and actuating device neither overheated cold only so that it is obtain reliable and available heat operating mode.
Whether abundance is not only related to that water cooling system plays its heat radiation function to coolant, is even related to vehicle operation ability, functional reliability, economy and durability etc. Water cooling system is by the system pressure needed for steam valve maintenance system, and its coolant has evaporation. Therefore the whether sufficient key becoming the maintenance of vehicle routine use of coolant in water cooling system is checked. The routine use of current vehicle passes through driver's method in the vehicle launch front opening water tank visual examination water yield in safeguarding: vehicle is when checking coolant, 1st step need to find filler cap, 1 article of the bolt of the 2nd fixing filler cap of step dismounting and other 1 bolts that comes loose, 3rd step specific purpose tool disassembles filler cap, coolant total amount in 4th step visualization water tank, 5th step loads onto the filler cap disassembled, and the 6th step installs the bolt that also tightening and loosening falls and the bolt come loose. Above-mentioned traditional approach checks that the time of the step cost of coolant in cooling system was at 10 to 15 minutes.
The method checking coolant before this vehicle launch, the work that not only second after second consumption manpower and energy are repeated, and vehicle mobile operations at any time are made a discount, in some instances it may even be possible to cause fighting unsuccessfully because checking that coolant is bungled the chance of winning a battle. This method making precombat check cooling night, mainly by the subjective experience of driver, it is possible to temporarily judge the amount of coolant, extremely inconvenience.
After vehicle launch, bulky systems is formed by engine water jacket, water pump, water radiator, fan (containing actuating device), cooling air channel and respective line for vehicle is such a, this inspection before vehicle launch, can not get rid of in cooling system whether there is leak source completely, cause a hidden trouble to vehicle use upon actuation. After vehicle start-up, pipeline or joint looseness, vehicle cooling system internal temperature and pressure rising is fastened unavoidably due to the vibration of vehicle, being likely to result in coolant or leak soon or slowly, therefore driver to pay close attention to the water temperature of actuating unit in instrument board, oil temperature at any time to judge that whether cooling system is overheated, whether coolant is sufficient. When finding water temperature, oil overheating, coolant often leaks in a large number, sometimes even causes the damage of electromotor or actuating device. Operator are thus needed in use to spend great effort to go to pay close attention to the water temperature of actuating unit, oil temperature, extremely inconvenient.
In addition, due to operator not by loaded down with trivial details rule of operation operation or carelessness in working service process, to vehicle inspection not in time and supplementary coolant, when coolant lacks at vehicle launch, use vehicle, cause the damage of power and actuating device.
Summary of the invention
Present invention solves the technical problem that there is provided a kind of liquid level detects and power control unit automatically, user of service can pass through this device, automatically checks the cooling liquid measure in water-cooling type cooling system, reduce the step of hand inspection coolant before vehicle launch; Before vehicle launch, the actuating unit (including electromotor) of restriction disappearance coolant starts, to its protection; After vehicle launch, monitor the cooling liquid measure of actuating unit in real time, and whether automatic decision coolant is sufficient; When coolant leaks into a certain degree, photoacoustic signal can be sent to driver; When coolant continues to leak into bottom line, photoacoustic signal can be sent to driver and control engine misses simultaneously, protect actuating unit. This kind of liquid level automatically detects and is greatly saved time of current check coolant with power control unit, shortens fighting machine vehicle line haul hour, improves mobility responding ability; At utmost more effectively automatically protect power set, improve the survival ability of vehicle.
The technical scheme is that a kind of liquid level detects and power control unit automatically, it is characterized in that, this device includes liquid level and automatically detects sensing device, power control unit, and liquid level automatically detects sensing device and is made up of electric signal interface, coolant water tank installation mechanical interface, detection sensing device; Detection sensing device includes limitting in liquid level upper limit proximity switch and liquid level upper limit float, liquid level limit float, liquid level lower limit proximity switch and liquid level lower limit float in proximity switch and liquid level; Three signal input parts of electric signal interface connect the DC voltage output end limitting proximity switch, liquid level lower limit proximity switch in liquid level upper limit proximity switch, liquid level respectively; Three signal output parts of electric signal interface are that liquid level detects three outfans of sensing device automatically; During float contact proximity switch, proximity switch outfan output d. c. voltage signal, the electric signal interface signal output part being connected with this proximity switch output d. c. voltage signal; Float includes limit float, liquid level lower limit float in liquid level upper limit float, liquid level; Proximity switch includes limitting in liquid level upper limit proximity switch, liquid level proximity switch and liquid level lower limit proximity switch; Automatically the upper limit determined as desired of sensing device, middle limit, lower limit is detected with liquid level upper limit proximity switch, liquid level being limit the horizontal plane that proximity switch and liquid level lower limit proximity switch are approximately in sustained height represent liquid level respectively; Liquid level automatically detects sensing device three and is called upper line output terminal, middle limit outfan, lower limit outfan with limitting the outfan that proximity switch and liquid level lower limit proximity switch connect in liquid level upper limit proximity switch, liquid level; Power control unit includes coolant liquid level judge module, liquid level detects sensing device electric signal interface automatically, fuel oil power on/off magnet valve controls electric signal interface; Liquid level detects three outfans of sensing device when all not having d. c. voltage signal to export automatically, coolant liquid level judge module exports the first signal, when liquid level detects sensing device lower limit outfan output d. c. voltage signal automatically, coolant liquid level judge module output secondary signal; Liquid level detects when limitting outfan, lower limit outfan to export d. c. voltage signal respectively in sensing device automatically, coolant liquid level judge module output the 3rd signal; When liquid level detects sensing device upper limit outfan automatically, middle limit outfan, lower limit outfan export d. c. voltage signal respectively, coolant liquid level judge module output the 4th signal; When coolant liquid level judge module exports the first signal, secondary signal, if vehicle is not actuated, coolant liquid level judge module controls fuel path oil-break, and restriction actuating unit starts; If vehicle launch, coolant liquid level judge module controls module by buzzer siren and sends acoustic alarm; When coolant liquid level judge module exports three signals, coolant liquid level judge module controls electric signal interface by fuel oil power on/off magnet valve and controls fuel path fuel feeding, controls module by buzzer siren and sends acoustic alarm; When coolant liquid level judge module exports four signals, coolant liquid level judge module controls electric signal interface by fuel oil power on/off magnet valve and controls fuel path fuel feeding.
Preferably, when coolant liquid level judge module exports the first signal; If vehicle launch, coolant liquid level judge module is by being shown liquid level " sky " by alarm display module, notified that vehicle alarm device sends sound and light alarm by external warning electric signal interface; When coolant liquid level judge module exports secondary signal; If vehicle launch, coolant liquid level judge module is by being shown liquid level D score by alarm display module, notified that vehicle alarm device sends sound and light alarm by external warning electric signal interface; When coolant liquid level judge module export three signals time, coolant liquid level judge module by alarm display module display liquid level " in ", by external warning electric signal interface notice vehicle alarm device send sound and light alarm; When coolant liquid level judge module export four signals time, coolant liquid level judge module by alarm display module display liquid level " on ".
Preferably, power control unit also includes: power interface, liquid level detect sensing device electric signal interface automatically, fuel oil power on/off magnet valve controls electric signal interface, electric signal interface of externally reporting to the police, actuating unit start control electric signal interface, alarm display module.
Preferably, liquid level detects the d. c. voltage signal of three outfan outputs of sensing device automatically is+24 volt d. c. voltage signals.
Liquid level detects sensing device, power control unit automatically; by cable, power control unit is coupled with the fuel solenoid valve on actuating unit; liquid level automatically detect sensing device the cooling liquid measure in cooling system is carried out monitoring in real time, under coolant deletion condition, power control unit generation signal controls the startup of actuating unit and shutdown.
Real time automatic detection coolant fluid level condition. Instruction fluid level condition, sends acousto-optic to liquid level miss status and indicates even sound and light alarm, limits, under disappearance fluid conditions, the startup started; In power set operate, detect that under disappearance fluid conditions, automatically controlled engine stops working. Automatically detect the liquid level of cooling system, then limit power set startup under disappearance fluid conditions and control power set (electromotor) in operation process because of auto extinguishing under disappearance fluid conditions.
The solution have the advantages that:
1, composition simple in construction, automatically detects liquid level sensing device and is arranged on the water tank of cooling system. After gross vehicle on and off switch is connected, utilize the total amount of power control unit real time automatic detection coolant. Avoid operator and dismantle the hand inspection step of filler cap, substantially reduce the detection time, improve the response time of vehicle.
2, there is the function of restriction vehicle launch. Avoid operator's abuse, when because of carelessness to vehicle inspection not in time and coolant disappearance, the damage of a power that startup vehicle causes and actuating device in violation of rules and regulations.
3, detect the function cooling down liquid measure in cooling system after just having vehicle launch in real time, and there is sound and light alarm and the function making power set flame-out, it is to avoid because of the damage of the power set that a variety of causes is caused by coolant disappearance.
4, reliability is high, is widely applied, it is possible to coolant total amount on fast and easy detection vehicle. And avoid because a variety of causes is lacked the hot stall caused by coolant, and cause the damage of power set. Provide convenience for operator, improve fighting machine operation response time, it is to avoid the waste of manpower, effectively prevent unnecessary loss. Become automatically checking after vehicle energising from manual detection by cooling system coolant, within can being shortened to 5 seconds the detection time, make fighting machine operation response time shorten.
Accompanying drawing explanation
Fig. 1 a liquid level detects and power control unit application electrical schematics automatically.
Fig. 1 b liquid level detects and power control unit application principle schematic diagram automatically.
Fig. 2 a is the structure principle chart that liquid level detects sensing device automatically.
Fig. 2 b is the structure sectional view that liquid level detects sensing device automatically. .
Fig. 2 c is that the B-B of Fig. 2 b is to schematic diagram.
Fig. 2 d is that the A-A of Fig. 2 b is to schematic diagram.
Fig. 3 is that liquid level detects sensing device principle schematic automatically.
Liquid level before Fig. 4 a startup detects and power control unit workflow diagram automatically.
Liquid level after Fig. 4 b startup detects and power control unit workflow diagram automatically.
Fig. 5 power control unit theory of constitution figure.
Wherein, 1. liquid level detects sensing device automatically, 2. power control unit, 3. starting-motor of engine, 4. fuel solenoid valve, 5. power supply, 6 D.C. contactors, 7. power distribution equipment, 8. instrument board controls switch, 9. electric signal interface, 10. electric signal interface installing plate, 11. cable connectors, 12. mounting-fixing bases, 13. trocar sheath, 14. the fixing pipe of lower liquid level, 15. inner sleeves, 16. proximity switches, 17. float, 18. the fixing seat of fixing pipe, the fixing pipe of liquid level on 19., the fixing pipe of liquid level in 20., mechanical interface installed by 21 coolant water tanks, 22 detection sensing devices
Detailed description of the invention
Describe the present invention below in conjunction with the drawings and specific embodiments.
The liquid level of the present invention detects and power control unit automatically, including: liquid level detects sensing device, power control unit automatically.
The mode of present invention such as Fig. 1 is applied, water-cooling type cooling system is installed liquid level and automatically detects sensing device, it is disposed about power control unit vehicle driver, fuel oil power on/off magnet valve (or the fuel oil power on/off magnet valve utilizing electromotor self to install) is installed in engine fuel input port, then connects the on and off switch on power supply, power distribution equipment, engine starting motor startup control relay, the electric alarms based on pattern recognition (or alarm device) of vehicle self, instrument board by Fig. 1 by cable.
As shown in Figure 2 a: liquid level automatically detects sensing device and is made up of electric signal interface 9, coolant water tank installation mechanical interface 21, detection sensing device 22, and detection sensing device 22 includes limitting in liquid level upper limit proximity switch and liquid level upper limit float, liquid level limit float, liquid level lower limit proximity switch and liquid level lower limit float in proximity switch and liquid level.
9 three signal input parts of electric signal interface connect+24 volt DC voltage output ends limitting proximity switch, liquid level lower limit proximity switch in liquid level upper limit proximity switch, liquid level respectively; Three signal output parts of electric signal interface are that liquid level detects three outfans of sensing device automatically.
During float contact proximity switch, proximity switch outfan output+24 volt d. c. voltage signals, three signal output part output+24 volt d. c. voltage signals of electric signal interface; Connect and liquid level upper limit proximity switch, liquid level are limit proximity switch and liquid level lower limit proximity switch adopt aforesaid same principle proximity switch (being referred to as proximity switch); Liquid level upper limit float, liquid level are limit float, liquid level lower limit float adopt the float of aforesaid same principle, lay respectively in the respective cylindrical drum of encapsulation, be positioned under each self-corresponding proximity switch.
Detection sensing device also includes the cylindrical drum of three dress envelope floats in encapsulation cylinder, encapsulation cylinder, proximity switch; Liquid level detects the upper limit of sensing device automatically, (coolant is minimum makes consumption to middle limit to limit the horizontal plane of proximity switch and liquid level lower limit proximity switch sustained height to represent respectively in liquid level upper limit proximity switch, liquid level, determine as required), lower limit (minimum less than coolant make consumption, should not start vehicle, it is possible to determine as required).
Water-cooling type cooling system is installed liquid level and automatically detects sensing device, the encapsulation cylinder of detection sensing device is arranged in coolant, coolant water tank is installed mechanical interface and is fixed on water tank, normally makes consumption (upper limit) determine setting height(from bottom) according to the position of proximity switch and coolant.
Liquid level detects sensing device three outfans respectively lower limit outfan, middle limit outfan, upper line output terminal automatically.
As shown in Figure 3: liquid level automatically detects the operation principle of sensing device and is:
Power control unit automatically detect sensing device to liquid level power time, when the liquid level in coolant water tank is in below lower limit, liquid level lower limit float is not close with lower limit proximity switch, and in the liquid level upper limit sensing proximity switch, liquid level, limit sensing proximity switch, liquid level lower limit pass proximity switch and do not produce+24 volt d. c. voltage signals; When the liquid level in coolant water tank be in lower limit and above, in spacing below time, liquid level lower limit float and lower limit proximity switch are close, limit float is not close with middle limit proximity switch in liquid level, and lower limit proximity switch is close to producing+24 volt direct current (bottom limit level) voltage signals; When more than the liquid level in coolant water tank is spacing in being in, below upper limit, lower limit float and lower limit proximity switch limit float close, middle are with middle limit proximity switch is close, upper limit float is not close with lower limit proximity switch, and middle limit proximity switch is close, lower limit proximity switch is close to producing+24 volt direct currents (in, bottom limit level two) voltage signal respectively simultaneously; When the liquid level in coolant water tank is in more than upper limit, lower limit float is close with lower limit proximity switch limit float close, middle and middle limit proximity switch, upper limit float is close with lower limit proximity switch, and lower limit proximity switch limit proximity switch close, middle is close, lower limit proximity switch is close produces+24 volt direct current upper, middle and lower limit 3 voltage signals of liquid level simultaneously.
Shown in Fig. 4 a, the liquid level before startup detects and power control unit workflow diagram automatically; Shown in Fig. 4 b, the liquid level after startup detects and power control unit workflow diagram automatically.
After gross vehicle on and off switch is opened, vehicle power distribution unit is powered to power control unit by power interface, while power control unit automatically detect sensing device to liquid level and power; Liquid level automatically detects sensing device and sends Level Detection signal; Power control unit, according to coolant upper, middle and lower limited signal, sends corresponding warning and control signal; During the liquid level upper limit, control to continue detection after fuel oil continues fuel feeding; In liquid level in limited time, control to continue detection after fuel oil continues fuel feeding and sends alarm signal; During liquid level lower limit, control to continue detection after fuel oil continues oil-break and sends alarm signal. So circulate the liquid measure of real-time coolant, and control the supply of fuel oil. The control signal of corresponding display lamp on power control unit, buzzer siren and output, prompting operator, automotive occupant, the fuel limit engine start of control power set and control engine misses, it is to avoid vehicle is the damage of the power set that the hot stall that causes causes because coolant disappearance produces.
As it is shown in figure 5, power control unit includes: power interface, coolant liquid level judge module, liquid level detect sensing device electric signal interface automatically, fuel oil power on/off magnet valve controls electric signal interface, electric signal interface of externally reporting to the police, actuating unit start control electric signal interface, alarm display module, buzzer siren control module, buzzer siren.
Vehicle power distribution unit is powered to power control unit by power interface, and simultaneously power control unit automatically detects sensing device and powers to liquid level;
Liquid level detects three outfans of sensing device automatically does not all have+24 volt d. c. voltage signal outputs, and coolant liquid level judge module exports the first signal,
Liquid level detects sensing device lower limit outfan output+24 volt d. c. voltage signals, coolant liquid level judge module output secondary signal automatically;
Liquid level detects automatically limits outfan, lower limit outfan to export+24 volt d. c. voltage signals respectively in sensing device, coolant liquid level judge module output the 3rd signal;
Liquid level detects sensing device upper limit outfan automatically, middle limit outfan, lower limit outfan export+24 volt d. c. voltage signals respectively, coolant liquid level judge module output the 4th signal;
When coolant liquid level judge module exports the first signal, secondary signal, if vehicle is not actuated, coolant liquid level judge module controls fuel path oil-break, and restriction actuating unit starts; If vehicle launch, coolant liquid level judge module by buzzer siren control module send acoustic alarm, by alarm display module show liquid level " sky " or D score, by external warning electric signal interface notice vehicle alarm device send sound and light alarm;
When coolant liquid level judge module exports three signals, coolant liquid level judge module by fuel oil power on/off magnet valve control electric signal interface control fuel path fuel feeding, by buzzer siren control module send acoustic alarm, by alarm display module show liquid level " in ", by external warning electric signal interface notify vehicle alarm device send sound and light alarm;
When coolant liquid level judge module export four signals time, coolant liquid level judge module by fuel oil power on/off magnet valve control electric signal interface control fuel path fuel feeding, by alarm display module show liquid level " on ".
The operation principle of the present invention is:
When main power connected by vehicle, vehicle power distribution unit is powered to power control unit by power interface, while power control unit automatically detect sensing device to liquid level and power; When the liquid level of coolant water tank is in below lower limit, liquid level detects all outfans of sensing device automatically does not all have+24 volt d. c. voltage signal outputs, and the coolant liquid level judge module automatic decision liquid level of power control unit is " sky "; Before vehicle launch, control electric signal interface by fuel oil power on/off magnet valve and control fuel path oil-break, restriction actuating unit starting; After vehicle launch, control electric signal interface by fuel oil power on/off magnet valve and control fuel path oil-break, sent acoustic alarm by buzzer siren control module, shown liquid level " sky " by alarm display module, notify that vehicle alarm device sends sound and light alarm by external warning electric signal interface;
Be in when the liquid level in coolant water tank more than lower limit or lower limit, in spacing below time, liquid level detects sensing device lower limit outfan output+24 volt d. c. voltage signals automatically, and the coolant liquid level judge module automatic decision liquid level of power control unit is " lower limit "; Before vehicle launch, control electric signal interface by fuel oil power on/off magnet valve and control fuel path oil-break, restriction power set starting; After vehicle launch, control electric signal interface by fuel oil power on/off magnet valve and control fuel path oil-break, sent acoustic alarm by buzzer siren control module, shown liquid level D score by alarm display module, notify that vehicle alarm device sends sound and light alarm by external warning electric signal interface;
When the liquid level in coolant water tank in being in spacing or in spacing more than, time below upper limit, liquid level detects limit outfan in sensing device automatically, lower limit outfan has exported+24 volt d. c. voltage signals respectively, the coolant liquid level judge module automatic decision liquid level of power control unit is " middle limit ", control electric signal interface by fuel oil power on/off magnet valve before and after vehicle launch and control fuel path fuel feeding, control module by buzzer siren and send acoustic alarm, by alarm display module show liquid level " in ", by externally reporting to the police, electric signal interface notice vehicle alarm device sends sound and light alarm,
When the liquid level in coolant water tank is in more than reach the standard grade position or upper limit, liquid level detects sensing device upper limit outfan automatically, middle limit outfan, lower limit outfan export+24 volt d. c. voltage signals respectively, the coolant liquid level judge module automatic decision liquid level of power control unit is " upper limit ", before and after vehicle launch by fuel oil power on/off magnet valve control electric signal interface control fuel path fuel feeding, by alarm display module show liquid level " on ".
Liquid level " sky " D score of the alarm display module of power control unit " in " " on " corresponding four display lamps, the on one's own initiative liquid level of coolant in detection cooling system; Prompting light and audio alarm can also be sent on one's own initiative to occupant.
Liquid level used by the present invention detects and power control unit automatically, and specific works state is as follows:
1, daily routine examination
Operator are before vehicle launch in operation, only need to open the gross vehicle on and off switch in instrument board, state when just four display lamp only one of which on available alarm display module are lighted, mark judge liquid measure " sky ", " lower limit ", " in " and one of " upper limit " these four state.
When " switch opened by alarm " is in "On" state on power control unit, cooling down liquid measure when " sky ", " lower limit " and " middle limit " in cooling system, on power control unit, buzzer and horn for vehicle can sound automatically; When on power control unit, " switch opened by alarm " is in "Off" state, time " sky " and " lower limit ", on power control unit, buzzer and horn for vehicle all can sound automatically, but in " middle limit " situation, alarm can stop sound. Meanwhile, " sky " and " lower limit " instruction etc. also can be glimmered. Until cooling also adds to " middle limit " above alarm device and just can stop sound, instruction just can stop flicker. And when cooling system lacks coolant, can automatically forbid that vehicle motor starts. Avoid operator's abuse, when because of carelessness to vehicle inspection not in time and coolant disappearance, the damage of an actuating unit that startup vehicle causes.
2, the Detection & Controling after vehicle launch
Vehicle upon actuation, owing to the athletic meeting of various vehicle components produces vibration, will produce that securing member loosens, pipe joint loosens and the possibility of damage of components, thus causing that coolant runs off. Driver to pay close attention to the oil temperature of the actuating unit in instrument board and water temperature at any time to judge that whether cooling system is overheated, and when finding their temperature overheating, coolant often leaks in a large number, sometimes even causes the damage of electromotor or actuating device. Liquid level detects automatically has, with power control unit, the function automatically detecting cooling liquid measure, it is possible to by detecting its situation in real time, and can pass through to control and display lamp inspection liquid level on acoustic-optic alarm. When " switch opened by alarm " is in "On" state on power control unit, cooling down liquid measure when " sky ", " lower limit " and " middle limit " in cooling system, on power control unit, buzzer and horn for vehicle can sound automatically; When on power control unit, " switch opened by alarm " is in "Off" state, time " sky " and " lower limit ", on power control unit, buzzer and horn for vehicle all can sound automatically, but in " middle limit " situation, alarm can stop sound. Meanwhile, when " sky " and " lower limit " instruction flicker, the oil circuit that can cut off fuel oil by controlling fuel solenoid valve makes engine misses, it is to avoid the damage of power set.
The present invention can automatically check the liquid level of coolant in water-cooling type cooling system before vehicle launch, reduces the step of hand inspection coolant, shortens battlebus vehicle line haul hour, limits the starting protection power set of electromotor when coolant lacks; In use procedure after vehicle start-up, detect the liquid level of coolant in real time, and whether automatic decision coolant is sufficient; Photoacoustic signal can be sent to driver when coolant leaks into a certain degree in cooling system; If coolant continues to leak into bottom line in cooling system, can controlling electromotor auto extinguishing, protection actuating unit is not damaged by.
According to having the daily demand making people and maintenance of water-cooling type cooling system vehicle, need to detect the total amount of coolant in its cooling water system in real time, automatic alarm under when coolant disappearance is a certain amount of, continue leakage to minimum flow time also there is the startup of restriction electromotor simultaneously or allow the ability of electromotor auto extinguishing. This device can avoid the parts of internal combustion engine that cause because coolant disappearance too high because of temperature, and the ablation of the body parts caused or the intensity of fusing, deformation and material or hardness decline, the hot stall that even destruction etc. of lubricating oil film causes. This device can use on all of vehicle, and its principle can be transplanted on the internal combustion engine with water cooling system, protects its power set. Described Level Detection and power control unit principle with simple for structure, practical function, vehicle is easily implemented, easy to use, it is possible to solve the automatic detection of coolant total amount, and the startup of limit engine and internal combustion engine auto extinguishing, protect power set. It is applicable to so vehicle, is even applicable to have on the internal combustion engine of water cooling system.
Liquid level is described further below and automatically detects the concrete structure of sensing device.
As shown in Fig. 2 b, 2c, 2d, liquid level detects sensing device automatically, is made up of electric signal interface 9, electric signal interface installing plate 10, cable connector 11, mounting-fixing base 12, trocar sheath 13, inner sleeve 15, proximity switch 16, float 17, the fixing seat 18 of fixing pipe, the fixing pipe 19 of upper liquid level, the fixing pipe 20 of middle liquid level, the fixing pipe 14 of lower liquid level.
Electric signal interface 9 is installed on electric signal interface installing plate 10.
On telecommunication interface 9, five ports are connected on five ports of cable connector 11 correspondingly with wire respectively. Five port two of which of cable connector 11 are power end, respectively with three conductor in parallel the liquid level upper limit, middle limit, lower limit proximity switch positive and negative electrode on (power positive end adopts three wires in parallel to connect three positive poles, power cathode ends adopt three wires in parallel to connect three negative poles); Its excess-three port of cable connector 11 is signal input part, is connected to+24 volt DC output ends of the liquid level upper limit, middle limit, lower limit proximity switch (being referred to as proximity switch 16). 9 three signal output parts of electric signal interface are that liquid level detects three outfans of sensing device automatically.
Electric signal interface installing plate 10 is fixed on mounting-fixing base 12.
Trocar sheath 13, upper liquid level fix pipe 19, middle liquid level fixes pipe 20, the initiating terminal of the fixing pipe 14 of lower liquid level is both connected on mounting-fixing base 12. Upper liquid level fixes pipe 19, middle liquid level fixes pipe 20, the end of the fixing pipe 14 of lower liquid level is respectively mounted upper limit proximity switch, middle limit proximity switch, lower limit proximity switch.
Having three groups (often groups 3) according to three kinds of liquid levels are high, the through hole determining position can be made the pressure in sleeve pipe identical with pipe external pressure, and make liquid enter smoothly in sleeve pipe on trocar sheath 13, float 17 lifts in the height direction according to liquid level.
Three inner sleeves 15 are set in outside the fixing pipe 19 of liquid level, the fixing pipe 20 of middle liquid level, the fixing pipe 14 of lower liquid level, and initiating terminal is both connected on mounting-fixing base 12, is inside also equipped with a float 17 respectively, and the other end connects the fixing seat 18 of fixing pipe. Having three pairs of through holes according to three kinds of determined positions of liquid level height on the tube wall of three inner sleeves 15 respectively, the pressure in sleeve pipe can be made identical with pipe external pressure, and make liquid enter smoothly in sleeve pipe, float 17 lifts in the height direction according to liquid level.
The fixing seat 18 of fixing pipe is connected on end and the trocar sheath 13 of three inner sleeves 15, and inner sleeve 15, the fixing pipe 19 of upper liquid level, the fixing pipe 20 of middle liquid level, the fixing pipe 14 of lower liquid level, proximity switch 16, float 17 are encapsulated in liquid level and are automatically detected in sensing device. Having three through holes determined according to inner sleeve link position (generally corresponding to each inner sleeve axis place) on the fixing seat 18 of fixing pipe, three through holes are liquid access way.
When liquid level detects liquid level change outside sensing device automatically, inner sleeve 15, trocar sheath 13 fix the through hole on seat 18 with fixing pipe, form liquid level and automatically detect the water channel that sensing device sleeve pipe inner and outer air pressure is identical. The water level that liquid level detects in sensing device automatically is contour with outside, the buoyancy following water-level lifting of float self. When float 17 contacts proximity switch 16, proximity switch 16 outfan output+24 volt d. c. voltage signals, 9 three signal output part output+24 volt d. c. voltage signals of electric signal interface.
Liquid level upper limit proximity switch is called for short upper limit proximity switch, and limit proximity switch in limitting proximity switch to be called for short in liquid level, liquid level lower limit proximity switch is called for short lower limit proximity switch. Proximity switch 16 includes liquid level upper limit proximity switch, middle limit proximity switch, lower limit proximity switch. Float 17 includes limit float (limitting float in abbreviation), liquid level lower limit float (being called for short lower limit float) in liquid level upper limit float (being called for short upper limit float), liquid level, in the inner sleeve that upper limit float, middle limit float, lower limit float lay respectively at the fixing pipe 19 of liquid level, middle liquid level fixes pipe 20, the fixing pipe 14 of lower liquid level overlaps, lay respectively under upper limit proximity switch, middle limit proximity switch, lower limit proximity switch.
Certainly, the present invention also can have other various embodiments, and when without departing substantially from present invention spirit and essence thereof, those of ordinary skill in the art are when can make various corresponding change and deformation according to the present invention.
Claims (4)
1. a liquid level detects and power control unit automatically, it is characterised in that this device includes liquid level and automatically detects sensing device, power control unit;
Liquid level automatically detects sensing device and is made up of electric signal interface, detection sensing device; Detection sensing device includes limitting in liquid level upper limit proximity switch and liquid level upper limit float, liquid level limit float, liquid level lower limit proximity switch and liquid level lower limit float in proximity switch and liquid level; Three signal input parts of electric signal interface connect the DC voltage output end limitting proximity switch, liquid level lower limit proximity switch in liquid level upper limit proximity switch, liquid level respectively; Three signal output parts of electric signal interface are that liquid level detects three outfans of sensing device automatically; During float contact proximity switch, proximity switch outfan output d. c. voltage signal, the electric signal interface signal output part being connected with this proximity switch output d. c. voltage signal; Float includes limit float, liquid level lower limit float in liquid level upper limit float, liquid level; Proximity switch includes limitting in liquid level upper limit proximity switch, liquid level proximity switch and liquid level lower limit proximity switch; Automatically the upper limit determined as desired of sensing device, middle limit, lower limit is detected with liquid level upper limit proximity switch, liquid level being limit the horizontal plane that proximity switch and liquid level lower limit proximity switch are approximately in sustained height represent liquid level respectively;
Liquid level automatically detects sensing device three and is called upper line output terminal, middle limit outfan, lower limit outfan with limitting the outfan that proximity switch and liquid level lower limit proximity switch connect in liquid level upper limit proximity switch, liquid level;
Power control unit includes coolant liquid level judge module, liquid level detects sensing device electric signal interface automatically; Liquid level detects three outfans of sensing device when all not having d. c. voltage signal to export automatically, coolant liquid level judge module exports the first signal, when liquid level detects sensing device lower limit outfan output d. c. voltage signal automatically, coolant liquid level judge module output secondary signal; Liquid level detects when limitting outfan, lower limit outfan to export d. c. voltage signal respectively in sensing device automatically, coolant liquid level judge module output the 3rd signal; When liquid level detects sensing device upper limit outfan automatically, middle limit outfan, lower limit outfan export d. c. voltage signal respectively, coolant liquid level judge module output the 4th signal;
When coolant liquid level judge module exports the first signal, secondary signal, if vehicle is not actuated, coolant liquid level judge module controls fuel path oil-break, and restriction actuating unit starts; If vehicle launch, coolant liquid level judge module controls module by buzzer siren and sends acoustic alarm; When coolant liquid level judge module exports three signals, coolant liquid level judge module controls electric signal interface by fuel oil power on/off magnet valve and controls fuel path fuel feeding, controls module by buzzer siren and sends acoustic alarm; When coolant liquid level judge module exports four signals, coolant liquid level judge module controls electric signal interface by fuel oil power on/off magnet valve and controls fuel path fuel feeding.
2. a kind of liquid level according to claim 1 detects and power control unit automatically, it is characterised in that
When coolant liquid level judge module exports the first signal; If vehicle launch, coolant liquid level judge module is by being shown liquid level " sky " by alarm display module, notified that vehicle alarm device sends sound and light alarm by external warning electric signal interface; When coolant liquid level judge module exports secondary signal; If vehicle launch, coolant liquid level judge module is by being shown liquid level D score by alarm display module, notified that vehicle alarm device sends sound and light alarm by external warning electric signal interface; When coolant liquid level judge module export three signals time, coolant liquid level judge module by alarm display module display liquid level " in ", by external warning electric signal interface notice vehicle alarm device send sound and light alarm; When coolant liquid level judge module export four signals time, coolant liquid level judge module by alarm display module display liquid level " on ".
3. a kind of liquid level according to claim 1 detects and power control unit automatically, it is characterised in that
Power control unit also includes: power interface, liquid level detect sensing device electric signal interface automatically, fuel oil power on/off magnet valve controls electric signal interface, electric signal interface of externally reporting to the police, actuating unit start control electric signal interface, alarm display module.
4. a kind of liquid level according to claim 1 detects and power control unit automatically, it is characterised in that
It is+24 volt d. c. voltage signals that liquid level detects the d. c. voltage signal of three outfan outputs of sensing device automatically.
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| CN201610168158.9A CN105673183B (en) | 2016-03-23 | 2016-03-23 | Liquid level automatic detection and power control unit |
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| CN201610168158.9A CN105673183B (en) | 2016-03-23 | 2016-03-23 | Liquid level automatic detection and power control unit |
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| CN105673183B CN105673183B (en) | 2018-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707499A (en) * | 2018-12-06 | 2019-05-03 | 连云港天明装备有限公司 | A kind of mine vehicle engine water protective device |
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| CN200999649Y (en) * | 2007-01-27 | 2008-01-02 | 徐州重型机械有限公司 | Engines water tank low level alarming device |
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| CN105673183B (en) | 2018-04-03 |
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