CN108620558A - A kind of Real-time Water cold flow amount control system - Google Patents
A kind of Real-time Water cold flow amount control system Download PDFInfo
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- CN108620558A CN108620558A CN201810824836.1A CN201810824836A CN108620558A CN 108620558 A CN108620558 A CN 108620558A CN 201810824836 A CN201810824836 A CN 201810824836A CN 108620558 A CN108620558 A CN 108620558A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/08—Controlling, supervising, e.g. for safety reasons
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Abstract
The present invention relates to a kind of Real-time Water cold flow amount control systems, including die ontology, water intake mechanism, return water mechanism, cold water process mechanism, flow control valve, control system and temperature measuring mechanism；The water outlet of the water intake mechanism is connected with the water inlet end of die ontology, and water inlet end is connected with the water outlet of cold water process mechanism；The water inlet end of the return water mechanism is connected with the water outlet of die ontology, and water outlet is connected with cold water process mechanism；The flow control valve is arranged on the water inlet end of water intake mechanism, and is connect with control system；The temperature measuring mechanism is connect with die ontology, water intake mechanism, return water mechanism, control system respectively.The present invention voluntarily can adjust the flow of cooling medium according to casting mould temperature, so that mold temperature is achieved the effect that demand temperature in real time to reach.
Description
Technical field
The present invention relates to the cooling equipment technical fields of casting, more particularly to a kind of Real-time Water cold flow amount control system.
Background technology
During cast casting is processed, a large amount of heat will produce during molten metal is molding in mold cavity.
If mold is constantly under the condition of high temperature and works, it can not only shorten the service life of mold, also affect casting
Final product quality.Therefore, certain cooling process is carried out to mold usually using water cooling plant in the prior art, so that mould
Tool is processed casting at a suitable temperature.
And in existing water cooling plant, the control of generally use quantitative timing formula cooling system, i.e. cooling system are according in advance
The cooling flow of setting, it is cooling to start and these three parameters of shut-in time implement control.But the parameter of above-mentioned setting needs
It is tested according to multiple practical debugging operations, can obtain accurate parameter, however the period of this parameter acquiring is long, cost
Height, and accuracy has deviation, causes refrigeration effect bad.On the other hand, due to parameter be fixed setting, when mold temperature,
When the correlative factors such as casting beat, coolant temperature change, which just can not necessarily be applicable in so that this mode
Caused by limitation it is very big.Wherein, the amplitude of mold temperature variation is uncontrollable again.
Invention content
Based on this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of controls of Real-time Water cold flow to be
System voluntarily can adjust the flow of cooling medium according to casting mould temperature, so that mold temperature is reached in real time to reach
The effect of demand temperature.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of Real-time Water cold flow amount control system, including die ontology, water intake mechanism, return water mechanism, cold water process machine
Structure, flow control valve, control system and temperature measuring mechanism；The water outlet of the water intake mechanism is connected with the water inlet end of die ontology,
Its water inlet end is connected with the water outlet of cold water process mechanism；The water inlet end of the return water mechanism and the water outlet phase of die ontology
Even, water outlet is connected with cold water process mechanism；The flow control valve is arranged on the water inlet end of water intake mechanism, and with control
System connection processed；The temperature measuring mechanism is connect with die ontology, water intake mechanism, return water mechanism, control system respectively.
Real-time Water cold flow amount control system of the present invention as a result, surveys the temperature of mold by temperature measuring mechanism
Amount (can many places), and by measurement result instant feedback to control system, control system calculates feedback according to the formula of setting
At a temperature of the flow that should give, and flow control information is transmitted at flow control valve；Flow control valve according to information into
The flow of water dispenser structure is adjusted.Also, according to the continuous feedback of above- mentioned information and control, to form real-time variable-flow formula
Cooling control, keeps mold control point temperature constantly close towards target temperature.Furthermore the present invention to mold temperature more accurately
Control realizes the control of the cooling sequencing of casting, reaches the voluntarily control of casting non-defective unit, to reduce a large amount of manual debugging
And such environmental effects.
In order to achieve better technical results, further technical improvements include the temperature measuring mechanism includes the first survey
Warm head, the second temperature measuring head and third temperature measuring head；First temperature measuring head is connect with die ontology, and the second temperature measuring head connects with water intake mechanism
It connects, third temperature measuring head is connect with return water mechanism, and the first temperature measuring head, the second temperature measuring head and third temperature measuring head pass through a thermocouple
It is connect with control system.
In order to achieve better technical results, further technical improvements include, the water intake mechanism include it is multiple into
Waterpipe and the intake pump being connect with multiple water inlet lines, the quantity of the flow control valve is identical as the quantity of water inlet line,
And correspondingly each water inlet line is arranged with a flow control valve.
In order to achieve better technical results, further technical improvements include the return water mechanism includes return pipe
Road and back water pump, back water pump are connect with water return pipeline；The caliber of the water return pipeline is the caliber summation of multiple water inlet lines
Twice.
In order to achieve better technical results, further technical improvements include the control mechanism includes control core
Piece and the driving circuit being connect with the control chip；The output end of the Wen Ce mechanisms is connect with the input terminal of control chip, is controlled
The output end of coremaking piece and the input terminal of driving circuit connect, and the output end of driving circuit is connect with flow control valve.
In order to achieve better technical results, further technical improvements include the cold water process mechanism includes
Circularly cooling case, semiconductor chilling plate and water feeding tank, the semiconductor chilling plate are arranged in the inside of circularly cooling case, the confession
Water tank is connected with circularly cooling case.
In order to achieve better technical results, further technical improvements include be equipped with water in the circularly cooling case
Position monitor is equipped with electronic switch valve, and the level switch and the electronics between the water feeding tank and circularly cooling case
Switch valve connects.
In order to achieve better technical results, further technical improvements include the Wen Ce mechanisms are for detecting mould
Have the temperature of ontology, water intake mechanism, return water mechanism, and the temperature signal detected is delivered to the control system；The control
System processed is for handling the temperature signal and exporting corresponding control signal to flow control valve.
Description of the drawings
Fig. 1 is the structural schematic diagram of the Real-time Water cold flow amount control system of the present invention；
Fig. 2 is the Water-cooling circulating figure of the Real-time Water cold flow amount control system of the present invention.
Specific implementation mode
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be coordinated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those skilled in the art will be understood that other may obtain embodiment and advantages of the present invention.
Please refer to Fig. 1 and Fig. 2, wherein Fig. 1 is the structural representation of the Real-time Water cold flow amount control system of the present invention
Figure；Fig. 2 is the Water-cooling circulating figure of the Real-time Water cold flow amount control system of the present invention.
A kind of Real-time Water cold flow amount control system, including die ontology 10, water intake mechanism 20, return water mechanism 30, cooling water
Processing mechanism 40, flow control valve 50, control system 60 and temperature measuring mechanism 70；The water outlet of the water intake mechanism 20 and mold sheet
The water inlet end of body 10 is connected, and water inlet end is connected with the water outlet of cold water process mechanism 40；The water inlet of the return water mechanism 30
End is connected with the water outlet of die ontology 10, and water outlet is connected with cold water process mechanism 40；The flow control valve 50 is set
It sets on the water inlet end of water intake mechanism 20, and is connect with control system 60；The temperature measuring mechanism 70 respectively with die ontology 10, into
Water dispenser structure 20, return water mechanism 30, control system 40 connect.Wherein, the Wen Ce mechanisms 70 are for detecting die ontology 10, water inlet
The temperature of mechanism 20, return water mechanism 30, and the temperature signal detected is delivered to the control system 60；The control system
60 for handling the temperature signal and exporting corresponding control signal to flow control valve 50.
Specifically, the water intake mechanism 20 includes multiple water inlet lines 21 and the intake pump being connect with multiple water inlet lines 21
22, the quantity of the flow control valve 50 is identical as the quantity of water inlet line 21, and correspondingly each water inlet line 21 is arranged
There are one flow control valves 50.The return water mechanism 30 includes water return pipeline 31 and back water pump 32, back water pump 32 and water return pipeline
31 connections.Wherein, the caliber of the water return pipeline 31 is twice of caliber summation of multiple water inlet lines 21.Wherein, it second surveys
Warm head 72 and third temperature measuring head 73 are separately positioned in water inlet line 21 and water return pipeline 31, the temperature of corresponding thermocouple induction
It feeds back in control system 60.
The cold water process mechanism 40 includes circularly cooling case, semiconductor chilling plate and water feeding tank, the semiconductor system
Cold is arranged in the inside of circularly cooling case, and the water feeding tank is connected with circularly cooling case.Wherein, in the circularly cooling case
Equipped with water level monitor, electronic switch valve, and the level switch and institute are equipped between the water feeding tank and circularly cooling case
State the connection of electronic switch valve.
The control mechanism 60 includes the driving circuit for controlling chip and being connect with the control chip；The Wen Ce mechanisms 70
Output end connect with the input terminal of control chip, the input terminal of the output end and driving circuit that control chip connects, and driving is electric
The output end on road is connect with flow control valve 50.
The temperature measuring mechanism 70 includes the first temperature measuring head 71, the second temperature measuring head 72 and third temperature measuring head 73；First temperature measuring head
71 connect with die ontology 10, and the second temperature measuring head 72 is connect with water intake mechanism 20, and third temperature measuring head 73 is connect with return water mechanism 30,
And first temperature measuring head 71, the second temperature measuring head 72 and third temperature measuring head 73 are connect by a thermocouple with control system 60.Wherein,
First temperature measuring head 71 is set on the die ontology 10 that need to be cooled down, and the temperature of collection module；Thermocouple is by the first temperature measuring head 71
In the temperature feedback of induction to control system 60.Also, multiple first can be arranged according to the quantity and structure for the module that need to be monitored
The thermocouple of temperature measuring head 71 and respective numbers.In the present embodiment, the first temperature measuring head 71 should be less than at a distance from casting or equal to cold
But water channel is at a distance from casting 11, while the first temperature measuring head 71 makes 71 more acurrate reflection mould of the first temperature measuring head far from cooling water channel
Has the temperature of ontology.
Operation principle is described in detail with Aluminum Alloy A356 low pressure casting in the present embodiment.When casting is implemented, aluminum water is filled with liquid
It is full to cavity everywhere, after filling type, aluminum water slowly radiates solidification.For make shrinkage cavity appear in pour, the unwanted region such as riser,
It needs to control the solidification sequence of aluminum water.Solidification sequence is controlled, needs to increase cooling medium cooling, accelerating cooling need to be preferential
The region of solidification.This Real-time Water cold flow amount control system is exactly the temperature by monitoring die ontology 10, makes mold to variable-flow
The temperature (i.e. aluminum water solidifies exothermic temperature) of ontology 10 reaches in control range.
Specifically, start control system, and die ontology 10 is extracted by temperature measuring mechanism 70 respectively, return water mechanism 20, is returned
The real time temperature parameter of water dispenser structure 30, control system 60 carry out processing analysis to these real time temperature parameters：
Return water temperature >=95 DEG C are fed back at water return pipeline 31, and (water turns to water in cooling mold and steams substantially at a temperature of this
Vapour, cooling effect are insufficient), control system 60 exports control signal to flow control valve 50 and adjusts the cooling of flow control valve 50
Water flow is maximum stream flow.
When feeding back 95 DEG C of return water temperature ＜ at water return pipeline 31, in aluminum water solidifies radiation processes, heat is respectively by mould
The cooling water absorption of tool, the air of mold periphery, cooling system.Since the heat that cooling water absorbs is inhaled much larger than mold and air
The heat of receipts, and water cooling designs on close 11 periphery of casting, when water flow is enough, it can be assumed that it is distributed by aluminum water solidification
The heat gone out is all absorbed, i.e. Q by water coolingAluminium=QWater。
Wherein, QAluminium=CAluminium*m*(TMould-TIf)；
QWater=CWater*m*(TIt returns-TInto)=CWater*ρ*(L/1000)*(t/60)*(TIt returns-TInto)；
Therefore, when feeding back 95 DEG C of return water temperature ＜ at water return pipeline 31, control system 60 is voluntarily calculated by following equation
Cooling water flow：
L=[60000*CAluminium*m*(TMould-TIf)]/[CWater*ρ*(TIt returns-TInto)*(tIf-tIt opens)]
Relevant parameter in above-mentioned formula is：
L is cooling water flow, unit：L/min.
CAluminiumFor the specific heat capacity of aluminum water, unit：J/(Kg*℃).Constant.
M is the local quality for the aluminum water that need to be cooled down, unit：Kg.The data can be calculated by 11 volume of casting.
TMouldFor the temperature for the die ontology 10 that the first temperature measuring head 71 measures, unit：℃.
TIfFor the first temperature measuring head 71 need adjust to die ontology 10 target temperature, can in control system 60 in advance
Setting, unit：℃.
CWaterFor the specific heat capacity of water, unit：J/(Kg*℃).Constant.
ρ is the density of water, unit：kg/m3.Constant.
TIt returnsFor the cooling water return water temperature that third temperature measuring head 73 measures, unit：℃.
TIntoFor the cold in-water temperature that the second temperature measuring head 72 measures, unit：℃.
tIfIt is cooled to set temperature T for mould temperatureIfTime.Unit：s.The data are according to cooling time when mold design, difference was set
Meter obtains.
tIt opensThe time cooled down for water cooling.Unit：s.It is voluntarily calculated by control system 60.
In addition, when the temperature of 71 second of die ontology 10 measured of the first temperature measuring head is equal to the temperature of aluminum water solidification,
Water cooling starts, i.e. delay start, waits for that the first temperature measuring head 71 measures molten aluminum solidification rear and starts.At this point, control system 60 is to flow
The output of regulating valve 50 control signal and the cooling water flow for adjusting flow control valve 50 are maximum stream flow
When the temperature for the die ontology 10 that 71 third time of the first temperature measuring head measures is equal to the temperature of aluminum water solidification, water cooling opens
It moves, i.e. delay start, waits for that the first thermometric 71 measures molten aluminum solidification rear and starts.At this point, control system 60 is to flow control valve 50
Output control signal and the cooling water flow for adjusting flow control valve 50 are maximum stream flow.
……
After control system 60 calculates the flow that should be given in real time, flow control valve 50, flow-rate adjustment are sent the signal to
Valve 50 adjusts cooling water flow in real time by signal.
It is constantly recycled by above-mentioned control, continuous real-time change reaches being precisely controlled for 10 temperature of die ontology.
Compared with prior art, Real-time Water cold flow amount control system of the present invention, by temperature measuring mechanism to mold
Temperature measures (can many places), and by measurement result instant feedback to control system, formula of the control system according to setting
The flow that should be given at a temperature of calculating feedback, and flow control information is transmitted at flow control valve；Flow control valve according to
It is believed that the flow of water intake mechanism is adjusted in breath.Also, it is real-time to be formed according to the continuous feedback of above- mentioned information and control
The cooling control of variable-flow formula, keeps mold control point temperature constantly close towards target temperature.Furthermore the present invention is to mold temperature
It more accurately controls, realizes the control of the cooling sequencing of casting, reach the voluntarily control of casting non-defective unit, it is a large amount of to reduce
Manual debugging and such environmental effects.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to invention Real-time Water cold flow amount control system range therefore be interpreted as.It should be pointed out that for this field
Those of ordinary skill for, without departing from the inventive concept of the premise, various modifications and improvements can be made, these are all
It belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of Real-time Water cold flow amount control system, it is characterised in that：Including die ontology, water intake mechanism, return water mechanism, cooling
Water process mechanism, flow control valve, control system and temperature measuring mechanism；The water outlet of the water intake mechanism and the water inlet of die ontology
End is connected, and water inlet end is connected with the water outlet of cold water process mechanism；The water inlet end of the return water mechanism and die ontology
Water outlet is connected, and water outlet is connected with cold water process mechanism；The water inlet end in water intake mechanism is arranged in the flow control valve
On, and connect with control system；The temperature measuring mechanism connects with die ontology, water intake mechanism, return water mechanism, control system respectively
It connects.
2. Real-time Water cold flow amount control system according to claim 1, it is characterised in that：The temperature measuring mechanism includes first
Temperature measuring head, the second temperature measuring head and third temperature measuring head；First temperature measuring head is connect with die ontology, and the second temperature measuring head connects with water intake mechanism
It connects, third temperature measuring head is connect with return water mechanism, and the first temperature measuring head, the second temperature measuring head and third temperature measuring head pass through a thermocouple
It is connect with control system.
3. Real-time Water cold flow amount control system according to claim 1, it is characterised in that：The water intake mechanism includes multiple
Water inlet line and the intake pump being connect with multiple water inlet lines, the quantity of the flow control valve and the quantity phase of water inlet line
Together, and correspondingly each water inlet line is arranged with a flow control valve.
4. Real-time Water cold flow amount control system according to claim 3, it is characterised in that：The return water mechanism includes return water
Pipeline and back water pump, back water pump are connect with water return pipeline；The caliber of the water return pipeline is the caliber summation of multiple water inlet lines
Twice.
5. Real-time Water cold flow amount control system according to claim 1, it is characterised in that：The control mechanism includes control
Chip and the driving circuit being connect with the control chip；The output end of the Wen Ce mechanisms is connect with the input terminal of control chip,
The input terminal of the output end and driving circuit that control chip connects, and the output end of driving circuit is connect with flow control valve.
6. Real-time Water cold flow amount control system according to claim 1, it is characterised in that：Cold water process mechanism packet
Include circularly cooling case, semiconductor chilling plate and water feeding tank, the semiconductor chilling plate is arranged in the inside of circularly cooling case, described
Water feeding tank is connected with circularly cooling case.
7. Real-time Water cold flow amount control system according to claim 1, it is characterised in that：It is equipped in the circularly cooling case
Water level monitor is equipped with electronic switch valve, and the level switch and the electricity between the water feeding tank and circularly cooling case
Sub switch valve connects.
8. Real-time Water cold flow amount control system according to claim 1, it is characterised in that：The Wen Ce mechanisms are for detecting
The temperature of die ontology, water intake mechanism, return water mechanism, and the temperature signal detected is delivered to the control system；It is described
Control system is for handling the temperature signal and exporting corresponding control signal to flow control valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810824836.1A CN108620558A (en) | 2018-07-25 | 2018-07-25 | A kind of Real-time Water cold flow amount control system |
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| CN201810824836.1A CN108620558A (en) | 2018-07-25 | 2018-07-25 | A kind of Real-time Water cold flow amount control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736873A (en) * | 2019-01-10 | 2019-05-10 | 中国矿业大学 | A kind of intelligent temperature measurement water filling device and method for coal fire improvement |
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