CN109442850A - A kind of chilled water unit and control method - Google Patents
A kind of chilled water unit and control method Download PDFInfo
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- CN109442850A CN109442850A CN201811417839.XA CN201811417839A CN109442850A CN 109442850 A CN109442850 A CN 109442850A CN 201811417839 A CN201811417839 A CN 201811417839A CN 109442850 A CN109442850 A CN 109442850A
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- water
- controller
- solenoid valve
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- water tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A kind of chilled water unit and control method, device include water tank and control unit, and control unit includes controller and the monitor positioned at distal end, and controller is connected with monitor by signal.The controller can control the water tank and realize water-refilling operation automatically, change water operation, pH value control manipulation, cut pump operation and cut pump operation, improve equipment operation stability, device intelligence；So that package unit has monitoring property, early warning, the working service person of chilled water unit is set to know device operating condition at the first time, processing problem in time, guarantee production line stable operation, reduce the unstable factor of parking wire jumper, guarantee that personnel are adapted to while production efficiency simplifies requirement, reduces the amount of labour.
Description
Technical field
The invention belongs to textile of chemical fibre industry winding apparatus fields, and in particular to a kind of chilled water unit and control method.
Background technique
In the high-intelligentization epoch, apparatus requires intelligent production.Due to the particularity of WINGS FDY equipment, hot-rolling
Temperature control is more stringent, while equipment internal part is also more stringent to temperature, hot-rolling add thermogenetic high temperature such as cannot and
When discharge will cause service life of equipment reduction, be unable to satisfy it is current it is highly integrated before spin requirements of weaving process.
In the actual production process, it has the following problems:
Once 1, cooling water tank water level inside production development line circulating line leak, is not easy to find, equipment is easily caused to jump
Vehicle stops production, influences production efficiency；
2, chilled water unit water quality quality will have a direct impact on U-shaped coil pipe, the poor easy formation scale of water quality inside equipment and cause
Line clogging, the damage of equipment overtemperature；
3, after equipment long-play, cooling water quality PH is weakly acidic, easily causes the corrosion of circulator pipeline；
4, each production line cooling device dispersion, employee work amount is big, and production line is needed to carry out meter reading inspection by platform；
5, chilled water unit smart is poor, once two fault of water pump occur must parking maintenance；
6, temperature control is unstable.
Above except device stable operation reduce it is outer, due to there are PVC pipeline or connector leak, temperature control it is unstable,
Production stability cannot ensure, influence production efficiency.Since device smart is poor, repair and replacement process time is long, once damage
It is bad to stop line maintenance, influence production efficiency.
Summary of the invention
To solve the disadvantage that existing cooling water tank influences the quality of production and production efficiency, the present invention provides a kind of cooling water dress
It sets and control method.
The technical solution adopted by the present invention is that:
The embodiment of the present application provides a kind of chilled water unit, and described device includes water tank and control unit, the control unit packet
Controller and the monitor positioned at distal end are included, the controller is connected with the monitor by signal；
The water tank is connected by water supply pipe with water supply source, and the water tank passes through water-changing tube and Sewage Disposal pipeline
It is connected；And the water supply pipe is equipped with the first solenoid valve, the water-changing tube is equipped with second solenoid valve；
The side of the water tank is communicated with the liquid level perspective pipe for the liquid level that can be used for observing the water tank, and the liquid level is saturating
It is equipped with the first liquid level sensor, the second liquid level sensor and third liquid level sensor at equal intervals along short transverse depending on pipe；Wherein, institute
The top that the first liquid level sensor is located at liquid level perspective pipe is stated, second liquid level sensor is located at liquid level perspective pipe
2/3rds height locate, the third liquid level sensor be located at the liquid level have an X-rayed pipe one third height at；And it is described
First liquid level sensor, second liquid level sensor and the third liquid level sensor are connected with the controller, described
First liquid level sensor, second liquid level sensor and the third liquid level sensor detect the liquid level information of the water tank simultaneously
It is conveyed to the controller；
The pH value data pick-up of the pH value for detecting the water in the water tank is additionally provided in the water tank and for examining
Survey the conductivity sensor of the conductivity of the water in the water tank；The pH value sensor and the conductivity sensor are and institute
It states controller to be connected, and the pH value data that the pH value sensor will test are conveyed to the controller, the conductivity passes
The conductivity data that sensor will test is conveyed to the controller；
Described device further includes heat exchanger, and the heat exchanger includes the first heat exchange pipeline and the second heat exchange of commutative heat
Pipeline；The import of first heat exchange pipeline is connected by chilled water water inlet pipe with chilled water water source, and the chilled water into
Third solenoid valve and the first thermometer are successively arranged on water pipe；The outlet of first heat exchange pipeline by chilled water outlet pipe with
External collecting container is connected, and the chilled water outlet pipe is equipped with the 4th solenoid valve；
The water tank pass sequentially through concatenated first main line, the first connecting tube, the second main line and the second connecting tube with
The water inlet of second heat exchange pipeline is connected；First main line includes two first branchs being in parallel, and described
One branch includes water pump, and the input end of the water pump is connected with the water tank, and the outlet end of the water pump and described first connects
The input end of adapter tube is connected, and is in series with the 5th solenoid valve in the inlet end and an outlet end of the water pump respectively；Described second
Main line includes two second branchs being in parallel, and the second branch includes filter, the input end of the filter and institute
The outlet end for stating the first connecting tube is connected, and the outlet end of the filter is connected with the muscle mouth end of second connecting tube,
And the 6th solenoid valve is in series in the inlet end and an outlet end of the filter respectively；Electricity is in series in second connecting tube to connect
Point pressure table, the electro connecting pressure gauge are connected with the controller, and the number pressure that the electro connecting pressure gauge will test
According to being conveyed to the controller；
The outlet end of second heat exchange pipeline is connected by circulating water outlet pipe with the water tank, and the recirculated water
Proportional valve, temperature sensor, second temperature table and the 7th electricity are sequentially connected in series from the heat exchanger to the water tank on outlet pipe
Magnet valve；Wherein, the temperature sensor is connected with the controller, and the temperature data that the temperature sensor will test is defeated
Give the controller；
First solenoid valve, the second solenoid valve, the third solenoid valve, the 4th solenoid valve, the described 5th
Solenoid valve, the 6th solenoid valve, the 7th solenoid valve and the water pump are connected with the controller, and the controller
Control first solenoid valve, the second solenoid valve, the third solenoid valve, the 4th solenoid valve, the 5th electromagnetism
The open and close of valve, the 6th solenoid valve, the 7th solenoid valve and the water pump；
The controller has the pH value display screen for pH value data described in real-time display, for electricity described in real-time display
The conductivity display screen of conductance data and temperature display for temperature data described in real-time display；
The controller is also connected with alarm, and pH value valley is preset in the controller, is also set in the controller
There is the first comparison module for being in real time compared the pH value data from the pH value sensor with the pH value valley,
When the pH value data are less than the pH value valley, the controller drives the alarm equipment alarm；
It is also preset with the first conductivity values and the second conductivity values in the controller, is equipped with and uses in the controller
In will the conductivity data from the conductivity sensor respectively with first conductivity values and second conductivity
The second comparison module that numerical value is compared；
When the conductivity data is greater than first conductivity values, the controller is followed by preset time interval
Water operation is changed in ring starting, and described to change water operation and be: the controller drives the second solenoid valve to open, when controller receives
When from the water level information of second water level sensor, the controller is driven described in the second solenoid valve closing and driving
First solenoid valve is opened, and closes described first when the controller is received from the water level information of the first water level sensor
Solenoid valve；When the conductivity data is less than second conductivity values, the controller terminates the water that changes and operates；
It is also preset with pressure security value in the controller, is additionally provided in the controller for the electric contact will to be come from
The third comparison module that the pressure data of pressure gauge is compared with the pressure security value, when the pressure data is less than described
When pressure security value, the controller switches the working condition of the water pump in two first branchs；
The relational expression in the recycling outlet between the temperature and flow of water, the control are preset in the controller
Device controls the aperture of the proportioning valve according to the temperature data and the relational expression that convey from the temperature sensor.
Further, the water tank is set on the base, and the controller is also provided on the base and is located at described
The side of water tank.
Further, the pH value sensor and the conductivity sensor are respectively positioned on the bottom in the water tank.
Further, the water tank is stainless steel water tank.
Further, the liquid level perspective pipe is corrosion resistant tetrafluoro transparent pipe.
The present embodiment also provides a kind of control method of chilled water unit, including operates as follows:
Water-refilling operation: when the liquid level of water in the water tank is lower than the first liquid level sensor position, described the
One liquid level sensor can not detect the liquid level information of the water tank, and the controller judges that the water tank is in exsiccosis, then
The controller drives first solenoid valve to open, and the water tank is through the water supply pipe moisturizing, until first liquid level passes
When sensor detects liquid level information and is conveyed to controller, the controller judges that the water tank adds water to finish, then the control
Device drives first solenoid valve to close, and the water tank stops plus water；
Change water operation: when the conductivity data is greater than first conductivity values, the controller is by preset
Water operation is changed in the starting of time interval loop start, it may be assumed that the controller drives the second solenoid valve to open, when controller receives
When to water level information from the second water level sensor, the controller drives the second solenoid valve to close and drives described the
One solenoid valve is opened, and first electricity is closed when the controller is received from the water level information of the first water level sensor
Magnet valve；When the conductivity data is less than second conductivity values, the controller terminates the water that changes and operates；
PH value control manipulation: the first comparison module by from the pH value sensor pH value data and the minimum PH number
Value is compared, and when the pH value data are less than the pH value valley, the controller drives the alarm equipment alarm, is prompted
Staff fills alkaline medicinal liquid into the water tank, to maintain the pH value of the water in the water tank；
Cut pump operation: third comparison module by from the electro connecting pressure gauge pressure data and the pressure security value
It is compared, when the pressure data is less than the pressure security value, the controller switches in two first branchs
Water pump working condition；
Temperature control operation: the controller is according to the temperature data and the relational expression control conveyed from the temperature sensor
The aperture of the proportioning valve is made, to control the temperature of water in the water tank.The beneficial effects of the present invention are embodied in:
(1) the operation is stable, structure is simple, intelligent monitoring；
(2) can monitor chilled water unit whether leak, and be automatically replenished, prevent to lead to production line because of water leakage device stop jumping
The problem of parking；
(3) addition of control unit can monitor the operating condition of chilled water unit in real time；
(4) recirculated water can be replaced automatically according to water quality situation, reaches optimal water quality；
(5) chilled water unit smart is high, and there are also reserve pump, two water pump damages can also share phase for a water pump damage
Adjacent production line chilled water unit；
To sum up, the operation is stable of the present invention, structure are simple, introduce the design of intelligent monitoring, improve equipment operation stability,
Device intelligence；So that package unit has monitoring property, early warning, make the working service person of chilled water unit at the first time
Know device operating condition, handle problem in time, guarantee production line stable operation, reduces the unstable factor of parking wire jumper,
Guarantee that personnel are adapted to while production efficiency simplifies requirement, reduces the amount of labour.
Detailed description of the invention
Fig. 1 is the overall structure diagram of device of the present invention in an embodiment.
Specific embodiment
It is clearly and completely described below in conjunction with technical solution of the attached drawing to the invention patent, it is clear that described
Embodiment is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, such as there is term "
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace such as occur
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Referring to attached drawing, the present embodiment mentions a kind of chilled water unit, and described device includes water tank 4 and control unit, the control
Portion includes controller 30 and the monitor 34 positioned at distal end, and the controller 30 is connected with the monitor 34 by signal；
Specifically, the monitor 34 can be monitoring computer, monitor 34 be may be provided in the monitoring room far from computer room, and
The monitor 34 can control the controller 30.
The water tank 4 is connected by water supply pipe 9 with water supply source, and the water tank 4 passes through water-changing tube 36 and sewage treatment
Pipeline of standing is connected；And the water supply pipe 9 is equipped with the first solenoid valve 10, the water-changing tube 36 is equipped with second solenoid valve 35；
Specifically, the water tank 4 is intake by the water supply pipe 9, and drained by the water-changing tube 36.
The side of the water tank 4 is communicated with the liquid level perspective pipe 8 for the liquid level that can be used for observing water tank 4, and the liquid level is saturating
Short transverse depending on pipe 8 along liquid level perspective pipe is equipped with the first liquid level sensor 5, the second liquid level sensor 6 and the at equal intervals
Three liquid level sensors 7；Wherein, first liquid level sensor 5 is located at the top of liquid level perspective pipe 8, second liquid level
Sensor 6 is located at 2/3rds height of liquid level perspective pipe 8, and it is saturating that the third liquid level sensor 7 is located at the liquid level
At the one third height of pipe 8；And first liquid level sensor 5, second liquid level sensor 6 and the third liquid level
Sensor 7 is connected with the controller 30, first liquid level sensor 5, second liquid level sensor 6 and the third
Liquid level sensor 7 detects the liquid level information of the water tank 4 and is conveyed to the controller 30；
Specifically, when the liquid level has an X-rayed the first liquid level sensor 5 described in the water immersion in pipe 8, second liquid level passes
It is corresponding when sensor 6 or the third liquid level sensor 7, first liquid level sensor 5, second liquid level sensor 6 or
The third liquid level sensor 7 can detect the liquid level information of the water tank 4 and be conveyed to the controller 30.
It is additionally provided with the pH value data pick-up 12 of the pH value for detecting the water in the water tank 4 in the water tank 4 and uses
In the conductivity sensor 11 for the conductivity for detecting the water in the water tank 4；The pH value sensor 12 and the conductivity pass
Sensor 11 is connected with the controller 30, and the pH value data that the pH value sensor 12 will test are conveyed to the control
Device 30, the conductivity data that the conductivity sensor 11 will test are conveyed to the controller 30；
Described device further includes heat exchanger 22, and the heat exchanger 22 includes the first heat exchange pipeline and second of commutative heat
Heat exchange pipeline；The import of first heat exchange pipeline is connected by chilled water water inlet pipe 29 with chilled water water source, and described cold
Freeze on water water inlet pipe 29 and is successively arranged third solenoid valve 27 and the first thermometer 28；The outlet of first heat exchange pipeline passes through cold
Freeze water outlet pipe 25 to be connected with external collecting container, and the chilled water outlet pipe 25 is equipped with the 4th solenoid valve 26；
Specifically, the external collecting container can be the containers such as pond, it is also possible to refrigerating plant, chilled water is returned cold
Freeze device and forms recycling after new chilled water.
The water tank 4 passes sequentially through concatenated first main line, the first connecting tube 17, the second main line and the second connecting tube
It is connected with the water inlet of second heat exchange pipeline；First main line includes two first branchs 16 being in parallel, institute
Stating the first branch 16 includes water pump 14, and the input end of the water pump 14 is connected with the water tank 4, the outlet end of the water pump 14
It is connected with the input end of first connecting tube, and is in series with the 5th electricity in the inlet end and an outlet end of the water pump 14 respectively
Magnet valve 13,15；Second main line includes two second branchs being in parallel, and the second branch includes filter 19, institute
The input end for stating filter 19 is connected with the outlet end of first connecting tube 17, the outlet end of the filter 19 with it is described
The input end of second connecting tube is connected, and is in series with the 6th solenoid valve in the inlet end and an outlet end of the filter 19 respectively
18,20；Electro connecting pressure gauge 21, the electro connecting pressure gauge 21 and 30 phase of controller are in series in second connecting tube
Even, and the pressure data that the electro connecting pressure gauge 21 will test is conveyed to the controller 30；
Specifically, the contact pressure table 21 detects the pressure at the outlet end of second connecting tube.
The outlet end of second heat exchange pipeline is connected by circulating water outlet pipe 1 with the water tank 4, and the circulation
Proportional valve 23, temperature sensor 24, second temperature are sequentially connected in series from the heat exchanger 22 to the water tank 4 on water outlet pipe 1
Table 2 and the 7th solenoid valve 3；Wherein, the temperature sensor 24 is connected with the controller 30, and the temperature sensor 24 will
The temperature data detected is conveyed to the controller 30；
First solenoid valve 10, the second solenoid valve 35, the third solenoid valve 27, the 4th solenoid valve 26,
5th solenoid valve 13,15, the 6th solenoid valve 18,20, the 7th solenoid valve 3 and the water pump 14 with the control
Device 30 processed is connected；And the controller controls first solenoid valve 10, the second solenoid valve 35, the third solenoid valve
27, the 4th solenoid valve 26, the 5th solenoid valve 13,15, the 6th solenoid valve 18,20,3 and of the 7th solenoid valve
The open and close of the water pump 14；
The controller 30 has the pH value display screen 31 for pH value data described in real-time display, is used for real-time display institute
State the conductivity display screen 32 of conductivity data and the temperature display 33 for temperature data described in real-time display；
Specifically, the controller 30 receives the pH value data and shows on the pH value display screen 31, the control
Device 30 processed receives the conductivity data and shows on the conductivity display screen 32, and the controller 30 receives the temperature
Data are simultaneously shown on the temperature display 33.
The controller 30 is also connected with alarm, and pH value valley, the controller 30 are preset in the controller 30
Inside it is additionally provided with first for being in real time compared the pH value data from the pH value sensor 12 with the pH value valley
Comparison module, when the pH value data are less than the pH value valley, the controller 30 drives the alarm equipment alarm；
For example, it is 7.0 that the pH value valley, which is arranged, when the pH value sensor 12 detects the pH value in the water tank 4
When lower than 7.0, alarm equipment alarm, and monitor 34 prompts staff to fill alkaline medicinal liquid into the water tank 4, to maintain
State the pH value of the water in the water tank 4.
It is also preset with the first conductivity values and the second conductivity values in the controller 30, is set in the controller 30
Have for will the conductivity data from the conductivity sensor 12 respectively with first conductivity values and described second
The second comparison module that conductivity values are compared；
When the conductivity data is greater than first conductivity values, the controller 30 presses preset time interval
Circulation open moves water operation, and described to change water operation and be: the controller 30 drives the second solenoid valve 35 to open, and works as controller
30 when receiving from the water level information of second water level sensor 6, and the controller 30 drives the second solenoid valve 35
It closes and first solenoid valve 10 is driven to open, and receive the water from the first water level sensor 5 in the controller 30
First solenoid valve 10 is closed when the information of position；When the conductivity data is less than second conductivity values, the control
Device processed terminates the water that changes and operates；
It is also preset with pressure security value in the controller 30, is additionally provided in the controller 30 for the electricity will to be come from
The third comparison module that the pressure data of contact pressure table 21 is compared with the pressure security value, when the pressure data is small
When the pressure security value, the controller 30 switches the working condition of the water pump 14 in two first branchs 16；
The relational expression in the recycling outlet 1 between the temperature and flow of water is preset in the controller 30, it is described
Controller 30 controls the proportioning valve 23 according to the temperature data and the relational expression that convey from the temperature sensor 24
Aperture.
Further, the water tank 4 is set on the base, and the controller 30 is also provided on the base and is located at institute
State the side of water tank 4.
Further, the pH value sensor 12 and the conductivity sensor 11 are respectively positioned on the bottom in the water tank 4.
Further, the water tank 4 is stainless steel water tank.
Further, the liquid level perspective pipe 8 is corrosion resistant tetrafluoro transparent pipe.
A kind of control method of chilled water unit described in the present embodiment, including operate as follows:
Water-refilling operation: described when the liquid level of water in the water tank 4 is lower than 5 position of the first liquid level sensor
First liquid level sensor 5 can not detect the liquid level information of the water tank 4, and the controller 30 judges that the water tank 4 is in water shortage
State；Then the controller 30 drives first solenoid valve 10 to open, and the water tank 4 is through 9 moisturizing of water supply pipe, until institute
When stating the first liquid level sensor 5 and detecting liquid level information and be conveyed to controller 30, the controller 30 judge the water tank 4 plus
Water finishes, then the controller 30 drives first solenoid valve 10 to close, and the water tank 4 stops plus water；
Specifically, if after controller 30 judges the water tank 4 plus water, in preset safety time, the control
Device processed judges the water tank 4 because that can not receive the liquid level information of 5 nothing of the first liquid level sensor again and is in water shortage shape
When state, the controller 30 drives the alarm equipment alarm, and the monitor 34 prompts leak to staff.
Change water operation: when the conductivity data is greater than first conductivity values, the controller is by preset
Time interval circulation open moves water operation, it may be assumed that the controller 30 drives the second solenoid valve 35 to open, when controller 30 connects
When receiving from the water level information of the second water level sensor 6, the controller 30 drives the second solenoid valve 35 to close and drive
It moves first solenoid valve 10 to open, and when the controller 30 is received from the water level information of the first water level sensor 5
Close first solenoid valve；When the conductivity data is less than second conductivity values, the controller terminates institute
It states and changes water operation；
For example, set first conductivity values as 50uS/cm, second conductivity values are set as 25uS/cm,
The preset time is 5 minutes.Controller sending refers to after the conductivity data that conductivity sensor 11 measures is higher than 50uS/cm
It enables, is operated into water is changed: opening second solenoid valve 35 and discharge water, when the liquid level in water tank 4 reaches second sensor institute in place
Second solenoid valve 35 is closed when setting, and is opened simultaneously the first solenoid valve 1 and is started moisturizing, when liquid level reaches first sensor position
When, close 1 solenoid valve of the first solenoid valve.Second solenoid valve 35 is opened again after five minutes, when the liquid level in water tank 4 reaches the second biography
Second solenoid valve 35 is closed when sensor position, is opened simultaneously the first solenoid valve 1 and is started moisturizing, when liquid level reaches the first sensing
When device position, 1 solenoid valve of the first solenoid valve is closed, the above-mentioned water that changes is repeated and operates, until what conductivity sensor 11 measured
Conductivity data, which is lower than after 25uS/cm, stops circulation, the controller 30 terminate it is described change water operation, the first solenoid valve 1 and the
Two solenoid valves 35 are turned off.
PH value control manipulation: the first comparison module by from the pH value sensor 12 pH value data and the minimum PH
Numerical value is compared, and when the pH value data are less than the pH value valley, the controller drives the alarm equipment alarm, is mentioned
Show that staff fills alkaline medicinal liquid into the water tank 4, to maintain the pH value of the water in the water tank 4；
Cut pump operation: third comparison module by from the electro connecting pressure gauge 21 pressure data and the pressure security
Value is compared, and when the pressure data is less than the pressure security value, the controller switches two first branchs
The working condition of water pump 14 on 16；
Specifically, the working condition of the water pump 14 is starting or closes.
Temperature control operation: being preset with the relational expression of temperature and flow on the recycling outlet in the controller 30, described
Controller controls opening for the proportioning valve 23 according to the temperature data and the relational expression that convey from the temperature sensor 24
Degree, to control the temperature of water in the water tank 4.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range is not construed as being only limitted to the concrete form of embodiment statement, and protection scope of the present invention is also and in those skilled in the art
Member according to the present invention design it is conceivable that equivalent technologies mean.
Claims (6)
1. a kind of chilled water unit, it is characterised in that: described device includes water tank and control unit, and the control unit includes controller
With the monitor for being located at distal end, the controller is connected with the monitor by signal；
The water tank is connected by water supply pipe with water supply source, and the water tank is connected by water-changing tube with Sewage Disposal pipeline
It is logical；And the water supply pipe is equipped with the first solenoid valve, the water-changing tube is equipped with second solenoid valve；
The side of the water tank is communicated with the liquid level perspective pipe for the liquid level that can be used for observing the water tank, and liquid level perspective pipe
It is equipped with the first liquid level sensor, the second liquid level sensor and third liquid level sensor at equal intervals along short transverse；Wherein, described
One liquid level sensor is located at the top of liquid level perspective pipe, and second liquid level sensor is located at the three of liquid level perspective pipe
At/bis- height, the third liquid level sensor is located at the one third height of liquid level perspective pipe；And described first
Liquid level sensor, second liquid level sensor and the third liquid level sensor are connected with the controller, and described first
Liquid level sensor, second liquid level sensor and the third liquid level sensor detect liquid level information and the conveying of the water tank
To the controller；
The pH value data pick-up of the pH value for detecting the water in the water tank is additionally provided in the water tank and for detecting
State the conductivity sensor of the conductivity of the water in water tank；The pH value sensor and the conductivity sensor with the control
Device processed is connected, and the pH value data that the pH value sensor will test are conveyed to the controller, the conductivity sensor
The conductivity data that will test is conveyed to the controller；
Described device further includes heat exchanger, and the heat exchanger includes the first heat exchange pipeline and the second heat exchanger tube of commutative heat
Road；The import of first heat exchange pipeline is connected by chilled water water inlet pipe with chilled water water source, and the chilled water is intake
Third solenoid valve and the first thermometer are successively arranged on pipe；The outlet of first heat exchange pipeline is by chilled water outlet pipe and outside
Portion's collecting container is connected, and the chilled water outlet pipe is equipped with the 4th solenoid valve；
The water tank pass sequentially through concatenated first main line, the first connecting tube, the second main line and the second connecting tube with it is described
The water inlet of second heat exchange pipeline is connected；First main line includes two first branchs being in parallel, and described first
Road includes water pump, and the input end of the water pump is connected with the water tank, the outlet end of the water pump and first connecting tube
Input end be connected, and the 5th solenoid valve is in series in the inlet end and an outlet end of the water pump respectively；Second supervisor
Road includes two second branchs being in parallel, and the second branch includes filter, the input end of the filter and described the
The outlet end of one connecting tube is connected, and the outlet end of the filter is connected with the muscle mouth end of second connecting tube, and institute
It states and is in series with the 6th solenoid valve in the inlet end and an outlet end of filter respectively；Electric contact pressure is in series in second connecting tube
Power table, the electro connecting pressure gauge are connected with the controller, and the pressure data that the electro connecting pressure gauge will test is defeated
Give the controller；
The outlet end of second heat exchange pipeline is connected by circulating water outlet pipe with the water tank, and the recirculated water is discharged
Proportional valve, temperature sensor, second temperature table and the 7th solenoid valve are sequentially connected in series from the heat exchanger to the water tank on pipe；
Wherein, the temperature sensor is connected with the controller, and the temperature data that the temperature sensor will test is conveyed to
The controller；
First solenoid valve, the second solenoid valve, the third solenoid valve, the 4th solenoid valve, the 5th electromagnetism
Valve, the 6th solenoid valve, the 7th solenoid valve and the water pump are connected with the controller, and the controller controls
First solenoid valve, the second solenoid valve, the third solenoid valve, the 4th solenoid valve, the 5th solenoid valve, institute
State the open and close of the 6th solenoid valve, the 7th solenoid valve and the water pump；
The controller has the pH value display screen for pH value data described in real-time display, for conductivity described in real-time display
The conductivity display screen of data and temperature display for temperature data described in real-time display；
The controller is also connected with alarm, and pH value valley is preset in the controller, is additionally provided with use in the controller
In the first comparison module for being in real time compared the pH value data from the pH value sensor with the pH value valley, work as institute
When stating pH value data less than the pH value valley, the controller drives the alarm equipment alarm；
It is also preset with the first conductivity values and the second conductivity values in the controller, is equipped in the controller for inciting somebody to action
Conductivity data from the conductivity sensor respectively with first conductivity values and second conductivity values
The second comparison module being compared；
When the conductivity data is greater than first conductivity values, the controller presses preset time interval circulation open
Move water operation, described to change water operation and be: the controller drives the second solenoid valve to open, and comes from when controller receives
When the water level information of second water level sensor, the controller drives the second solenoid valve to close and drives described first
Solenoid valve is opened, and first electromagnetism is closed when the controller is received from the water level information of the first water level sensor
Valve；When the conductivity data is less than second conductivity values, the controller terminates the water that changes and operates；
It is also preset with pressure security value in the controller, is additionally provided in the controller for the electric contact pressure will to be come from
The third comparison module that the pressure data of table is compared with the pressure security value, when the pressure data is less than the pressure
When safety value, the controller switches the working condition of the water pump in two first branchs；
The relational expression in the recycling outlet between the temperature and flow of water, the controller root are preset in the controller
The aperture of the proportioning valve is controlled according to the temperature data and the relational expression that convey from the temperature sensor.
2. a kind of chilled water unit as described in claim 1, it is characterised in that: the water tank is set on the base, the control
Device processed is also provided with the side on the base and being located at the water tank.
3. a kind of chilled water unit as described in claim 1, it is characterised in that:, the pH value sensor and the conductivity
Sensor is respectively positioned on the bottom in the water tank.
4. a kind of chilled water unit as described in claim 1, it is characterised in that: the water tank is stainless steel water tank.
5. a kind of chilled water unit as described in claim 1, it is characterised in that: the liquid level perspective pipe is corrosion resistant tetrafluoro
Transparent pipe.
6. a kind of control method of chilled water unit as described in claim 1, including operate as follows:
Water-refilling operation: when the liquid level of water in the water tank is lower than the first liquid level sensor position, first liquid
Level sensor can not detect the liquid level information of the water tank, and the controller judges that the water tank is in exsiccosis, then described
Controller drives first solenoid valve to open, and the water tank is through the water supply pipe moisturizing, until first liquid level sensor
When detecting liquid level information and being conveyed to controller, the controller judges that the water tank adds water to finish, then the controller drives
It moves first solenoid valve to close, the water tank stops plus water；
Change water operation: when the conductivity data is greater than first conductivity values, the controller presses the preset time
Water operation is changed in interval loop start starting, it may be assumed that the controller drives the second solenoid valve to open, and comes when controller receives
When from the water level information of the second water level sensor, the controller drives the second solenoid valve to close and drives first electricity
Magnet valve is opened, and first electromagnetism is closed when the controller is received from the water level information of the first water level sensor
Valve；When the conductivity data is less than second conductivity values, the controller terminates the water that changes and operates；
PH value control manipulation: the first comparison module by from the pH value sensor pH value data and the minimum PH numerical value into
Row compares, and when the pH value data are less than the pH value valley, the controller drives the alarm equipment alarm, prompts work
Personnel fill alkaline medicinal liquid into the water tank, to maintain the pH value of the water in the water tank；
Cut pump operation: third comparison module carries out the pressure data from the electro connecting pressure gauge with the pressure security value
Compare, when the pressure data is less than the pressure security value, the controller switches the water in two first branchs
The working condition of pump；
Temperature control operation: the controller controls institute according to the temperature data conveyed from the temperature sensor and the relational expression
The aperture of proportioning valve is stated, to control the temperature of water in the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417839.XA CN109442850B (en) | 2018-11-26 | 2018-11-26 | Cooling water device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417839.XA CN109442850B (en) | 2018-11-26 | 2018-11-26 | Cooling water device and control method |
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| CN109442850A true CN109442850A (en) | 2019-03-08 |
| CN109442850B CN109442850B (en) | 2023-04-11 |
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ID=65555392
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811417839.XA Active CN109442850B (en) | 2018-11-26 | 2018-11-26 | Cooling water device and control method |
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| CN110017948A (en) * | 2019-04-30 | 2019-07-16 | 无锡双翼汽车环保科技有限公司 | Testboard is used in cooler detection |
| CN115289774A (en) * | 2022-07-01 | 2022-11-04 | 江西金德铅业股份有限公司 | Alarm device for rapidly eliminating overhigh water temperature |
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|---|---|
| CN109442850B (en) | 2023-04-11 |
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