CN209689473U - Test cooling medium double-heat exchanger series connection low temperature high temperature switching control - Google Patents
Test cooling medium double-heat exchanger series connection low temperature high temperature switching control Download PDFInfo
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- CN209689473U CN209689473U CN201822269206.0U CN201822269206U CN209689473U CN 209689473 U CN209689473 U CN 209689473U CN 201822269206 U CN201822269206 U CN 201822269206U CN 209689473 U CN209689473 U CN 209689473U
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Abstract
The utility model relates to a kind of test cooling medium double-heat exchanger series connection low temperature high temperature switching controls, comprising: first heat exchanger, the first threeway ratio adjusting valve, second heat exchanger, third heat exchanger, heater, two three-way diverter valves, the first cooling medium, the second cooling medium, third cooling medium and the 4th cooling medium；It is to divide with preset temperature, the target temperature of second cooling medium is divided into high temperature and low temperature, when low temperature, it only needs to cool down using first heat exchanger, when high temperature, it is only necessary to be heated up using second heat exchanger, cooling and heating are separately controlled, the temperature difference of each process is reduced, and then reaches the energy consumption reduced when cooling tower cools down to the first cooling medium and the second cooling medium.Prevent the first cooling medium and third cooling medium from directly carrying out heat exchange in a heat exchanger, due to the two excessive temperature differentials, if carrying out heat exchange directly in a heat exchanger will lead to the icing of heat exchanger moment.
Description
Technical field
The utility model relates to, and in particular to a kind of test cooling medium double-heat exchanger series connection low temperature high temperature switching control
Device processed.
Background technique
Automobile power assembly laboratory usually provides a variety of cooling mediums: cooling water (is cooled down) by cooling tower, 7 DEG C of freezings
Water and ultralow temperature cooling water.Rack is tested with power assembly and is gone with ultralow temperature cooling water major part temperature at -30 DEG C at present
The development of industry, power assembly laboratory have the tendency that further decreasing to the temperature requirement of ultralow temperature cooling water.Such as with -50 DEG C
The cooling water of rank substitutes -30 DEG C of cooling water.Due to further decreasing for coolant temperature, current power assembly rack
Various temperature control devices (engine coolant temperature control, motor coolant liquid temperature control, engine motor oil temperature control, transmission oil temperature control,
In cold temperature control, fuel oil temperature control etc.) do not adapt to ultralow temperature cooling water, will lead to the heat exchanger freezing in temperature control device.
Meanwhile temperature control is carried out using cooling medium of the single cooling medium to measured piece and will cause hot friendship when the excessive temperature differentials of the two
Parallel operation freezes, and people's normal assays process is influenced, simultaneously because excessive temperature differentials causes energy consumption to rise.
How to solve the above problems, is urgently to be resolved at present.
Utility model content
The purpose of this utility model is.
In order to solve the above-mentioned technical problem, the utility model provides a kind of test cooling medium double-heat exchanger series connection
Low temperature high temperature switching control, comprising: first heat exchanger, the first threeway ratio adjusting valve, second heat exchanger, third heat
Exchanger, heater, two three-way diverter valves, the first cooling medium, the second cooling medium, third cooling medium and the 4th are cold
But medium；
First cooling medium is directly entered first heat exchanger, to change the temperature of first heat exchanger；
The first threeway ratio adjusting valve is suitable for changing second medium and enters second heat exchanger and the first heat exchange
The uninterrupted of device, to control the temperature at T1；
4th cooling medium is suitable for changing the temperature of third heat exchanger；
The three-way diverter valve is suitable for flowing into second heat exchanger according to the target temperature control third cooling medium at T3
Or third heat exchanger；
When target temperature at the T3 is less than preset temperature, the second heat exchanger is suitable for changing the third of measured piece
The temperature of cooling medium, to control temperature of the third cooling medium at T3；
When the target temperature that the T3 goes out is greater than preset temperature, the third heat exchanger and heater are suitable for changing quilt
The temperature for surveying the third cooling medium of part, to control temperature of the third cooling medium at T3.
Further, the test includes first with cooling medium double-heat exchanger series connection low temperature high temperature switching control
Circulation and bypass circulation；
The first threeway ratio adjusting valve is suitable for changing second medium and enters second heat exchanger and the first heat exchange
The uninterrupted of device, to control the temperature at T1.
Further, the first threeway ratio adjusting valve by PLC controller control aperture, come change second medium into
Enter the uninterrupted of second heat exchanger and first heat exchanger.
Further, the first circulation successively includes first circulation pump, the first threeway proportion adjustment according to loop direction
Valve and second heat exchanger；
The bypass circulation includes the first threeway ratio adjusting valve and first heat exchanger；
The first threeway ratio adjusting valve controls aperture by PLC controller, to change second medium into the second heat
The uninterrupted of exchanger and first heat exchanger, to control the temperature at T1.
Further, the PLC controller is suitable for controlling the third cooling medium by two three-way diverter valves
Into second circulation or respectively enter third circulation and the 4th circulation；
The third cooling medium enters the ratio of third circulation and the 4th circulation by changing the second three-way control valve
Aperture change to change the temperature of third cooling medium.
Further, the aperture of second three-way control valve controls aperture by PLC controller.
Further, the second circulation according to loop direction successively include the water inlet of third cooling medium, second circulation pump,
Three-way diverter valve, second heat exchanger, another three-way diverter valve and the water outlet of third cooling medium；
The third circulation successively includes the water inlet of third cooling medium, second circulation pump, triplet commutation according to loop direction
Valve, the second three-way control valve, heater, another three-way diverter valve and the water outlet of third cooling medium；
4th circulation successively includes the water inlet of third cooling medium, second circulation pump, triplet commutation according to loop direction
Valve, the second three-way control valve, second heat exchanger, another three-way diverter valve and the water outlet of third cooling medium；
The PLC controller is suitable for controlling the third cooling medium by two three-way diverter valves to be followed into second
Ring respectively enters third circulation and the 4th circulation；
The PLC controller is further adapted for the aperture by changing three-way control valve and enters to change second cooling medium
The ratio of 4th circulation and the 5th circulation, to controlled in the temperature that T3 goes out the second cooling medium.
Further, the first circulation and the second circulation are all connected with an expansion tank.
The utility model has the beneficial effects that a kind of test of the utility model is low with the series connection of cooling medium double-heat exchanger
Warm high temperature switching control, comprising: first heat exchanger, the first threeway ratio adjusting valve, second heat exchanger, third heat are handed over
Parallel operation, heater, two three-way diverter valves, the first cooling medium, the second cooling medium, third cooling medium and the 4th are cooling
Medium；First cooling medium is directly entered first heat exchanger, to change the temperature of first heat exchanger；Described first
Threeway ratio adjusting valve is suitable for changing the uninterrupted that second medium enters second heat exchanger and first heat exchanger, thus
Temperature at T1 is controlled；4th cooling medium is suitable for changing the temperature of third heat exchanger；The three-way diverter valve is suitable
According to the target temperature control third cooling medium inflow second heat exchanger or third heat exchanger at T3；At the T3
When target temperature is less than preset temperature, the second heat exchanger is suitable for changing the temperature of the third cooling medium of measured piece, from
And temperature of the third cooling medium at T3 is controlled；When the target temperature that the T3 goes out is greater than preset temperature, described the
Three heat exchangers and heater are suitable for changing the temperature of the third cooling medium of measured piece, thus to third cooling medium in T3
The temperature at place is controlled.It is to divide with preset temperature, by the cooling medium of measured piece, the i.e. target temperature of the second cooling medium
High temperature and low temperature are divided into, when low temperature, it is only necessary to cool down using first heat exchanger, when high temperature, it is only necessary to use the
Two heat exchangers heat up, and cooling and heating are separately controlled, the temperature difference of each process is reduced, and then reach reduction cooling
Energy consumption when tower cools down to the first cooling medium and the second cooling medium can be improved the simultaneously because the temperature difference becomes smaller
The temperature of two cooling mediums reaches the speed of target temperature, improves test efficiency.Meanwhile temperature control is carried out using double-heat exchanger
System prevents the first cooling medium and third cooling medium from directly carrying out heat exchange in a heat exchanger, due to the two temperature difference
It is excessive, if carrying out heat exchange directly in a heat exchanger will lead to the icing of heat exchanger moment.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is test cooling medium double-heat exchanger series connection low temperature high temperature switching control dress provided by the utility model
It sets.
In figure；110- first circulation pump；120- the first threeway ratio adjusting valve；130- second circulation pump；140- the two or three
Logical regulating valve；150- three-way diverter valve.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Embodiment
As shown in Figure 1, present embodiments providing a kind of test cooling medium double-heat exchanger series connection low temperature high temperature switching
Control device.Test cooling medium double-heat exchanger series connection low temperature high temperature switching control includes: first heat exchanger, the
One threeway ratio adjusting valve 120, second heat exchanger, third heat exchanger, heater, two three-way diverter valves 150, first are cold
But medium, the second cooling medium, third cooling medium and the 4th cooling medium；First cooling medium is directly entered first
Heat exchanger, to change the temperature of first heat exchanger；The first threeway ratio adjusting valve 120 is suitable for changing second medium
Into the uninterrupted of second heat exchanger and first heat exchanger, to control the temperature at T1；4th is cooling
Medium is suitable for changing the temperature of third heat exchanger；The three-way diverter valve 150 is suitable for controlling the according to the target temperature at the place T3
Three cooling mediums flow into second heat exchanger or third heat exchanger；When target temperature at the T3 is less than preset temperature, institute
The temperature that second heat exchanger is suitable for changing the third cooling medium of measured piece is stated, thus the temperature to third cooling medium at T3
Degree is controlled；When the target temperature that the T3 goes out is greater than preset temperature, the third heat exchanger and heater are suitable for changing
The temperature for becoming the third cooling medium of measured piece, to control temperature of the third cooling medium at T3.With default temperature
Degree is divides, and by the cooling medium of measured piece, i.e. the target temperature of the second cooling medium is divided into high temperature and low temperature, low temperature
When, it is only necessary to cooled down using first heat exchanger, when high temperature, it is only necessary to be heated up, will be dropped using second heat exchanger
Mild heating is separately controlled, and reduces the temperature difference of each process, and then reaches reduction cooling tower to the first cooling medium and the
Energy consumption when two cooling mediums cool down, simultaneously because the temperature difference becomes smaller, the temperature that the second cooling medium can be improved reaches mesh
The speed of temperature is marked, test efficiency is improved.Meanwhile using double-heat exchanger carry out temperature control, prevent the first cooling medium with
Third cooling medium directly carries out heat exchange in a heat exchanger, due to the two excessive temperature differentials, if directly handing in a heat
Heat exchange is carried out in parallel operation will lead to the icing of heat exchanger moment.
In the present embodiment, the test cooling medium double-heat exchanger series connection low temperature high temperature switching control includes
First circulation and bypass circulation；The first threeway ratio adjusting valve 120 is suitable for changing second medium and enters the second heat exchange
The uninterrupted of device and first heat exchanger, to control the temperature at T1.PLC controller and the first threeway are adjusted
Valve is electrically connected, and the proportionate relationship of the aperture and the temperature at T1 of the first three-way control valve is obtained by experimental data.
In the present embodiment, the first threeway ratio adjusting valve 120 controls aperture by PLC controller, to change the
Second medium enters the uninterrupted of second heat exchanger and first heat exchanger.
Wherein, the first circulation successively includes that first circulation pumps the 110, first threeway ratio adjusting valve according to loop direction
120 and second heat exchanger；The bypass circulation includes the first threeway ratio adjusting valve 120 and first heat exchanger；Institute
State the first threeway ratio adjusting valve 120 by PLC controller control aperture, come change second medium enter second heat exchanger with
And the uninterrupted of first heat exchanger, to control the temperature at T1.
In the present embodiment, the PLC controller is suitable for controlling the third by two three-way diverter valves 150 cold
But medium enters second circulation or respectively enters third circulation and the 4th circulation；The third cooling medium enters third and follows
The ratio of ring and the 4th circulation changes to change third cooling medium by changing the aperture of the second three-way control valve 140
Temperature.Wherein, the aperture of second three-way control valve 140 controls aperture by PLC controller.
Specifically, the second circulation successively includes the water inlet of third cooling medium, second circulation pump according to loop direction
130, three-way diverter valve 150, second heat exchanger, another three-way diverter valve 150 and the water outlet of third cooling medium；The third
Circulation successively includes the water inlet of third cooling medium, second circulation pump 130, three-way diverter valve 150, the second threeway according to loop direction
Regulating valve 140, heater, another three-way diverter valve 150 and the water outlet of third cooling medium；4th circulation is according to circulation side
To successively including the water inlet of third cooling medium, second circulation pump 130, three-way diverter valve 150, the second three-way control valve 140, second
Heat exchanger, another three-way diverter valve 150 and the water outlet of third cooling medium；The PLC controller is suitable for by described in two
Three-way diverter valve 150 controls the third cooling medium and enters second circulation or respectively enter third circulation and the 4th follow
Ring；The PLC controller is further adapted for the aperture by changing three-way control valve to change second cooling medium into the 4th
The ratio of circulation and the 5th circulation, to controlled in the temperature that T3 goes out the second cooling medium.
In the present embodiment, the first circulation and the second circulation are all connected with an expansion tank.
In conclusion a kind of test of the utility model cooling medium double-heat exchanger series connection low temperature high temperature switching control
Device, comprising: first heat exchanger, the first threeway ratio adjusting valve, second heat exchanger, third heat exchanger, heater, two
A three-way diverter valve, the first cooling medium, the second cooling medium, third cooling medium and the 4th cooling medium；Described first
Cooling medium is directly entered first heat exchanger, to change the temperature of first heat exchanger；The first threeway proportion adjustment
Valve is suitable for changing the uninterrupted that second medium enters second heat exchanger and first heat exchanger, thus to the temperature at T1
It is controlled；4th cooling medium is suitable for changing the temperature of third heat exchanger；The three-way diverter valve is suitable for according at T3
Target temperature controls third cooling medium and flows into second heat exchanger or third heat exchanger；Target temperature at the T3 is less than
When preset temperature, the second heat exchanger is suitable for changing the temperature of the third cooling medium of measured piece, thus cooling to third
Temperature of the medium at T3 is controlled；The T3 go out target temperature be greater than preset temperature when, the third heat exchanger with
And heater is suitable for changing the temperature of the third cooling medium of measured piece, to be carried out to temperature of the third cooling medium at T3
Control.With preset temperature be divide, by the cooling medium of measured piece, i.e. the target temperature of the second cooling medium be divided into high temperature with
And low temperature, when low temperature, it is only necessary to be cooled down using first heat exchanger, when high temperature, it is only necessary to using second heat exchanger into
Row heating, cooling and heating are separately controlled, the temperature difference of each process is reduced, and then are reached and reduced cooling tower to the first cooling
The second cooling medium can be improved simultaneously because the temperature difference becomes smaller in energy consumption when medium and the second cooling medium cool down
Temperature reaches the speed of target temperature, improves test efficiency.Meanwhile temperature control is carried out using double-heat exchanger, prevent first
Cooling medium and third cooling medium directly carry out heat exchange in a heat exchanger, due to the two excessive temperature differentials, if directly
Heat exchange is carried out in a heat exchanger will lead to the icing of heat exchanger moment.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (8)
1. a kind of test cooling medium double-heat exchanger series connection low temperature high temperature switching control characterized by comprising the
One heat exchanger, the first threeway ratio adjusting valve, second heat exchanger, third heat exchanger, heater, two triplet commutations
Valve, the first cooling medium, the second cooling medium, third cooling medium and the 4th cooling medium；
First cooling medium is directly entered first heat exchanger, to change the temperature of first heat exchanger；
The first threeway ratio adjusting valve is suitable for changing second medium and enters second heat exchanger and first heat exchanger
Uninterrupted, to control the temperature at T1；
4th cooling medium is suitable for changing the temperature of third heat exchanger；
The three-way diverter valve is suitable for according to the target temperature control third cooling medium inflow second heat exchanger at the place T3 or the
Three heat exchangers；
When target temperature at the T3 is less than preset temperature, the third that the second heat exchanger is suitable for changing measured piece is cooling
The temperature of medium, to control temperature of the third cooling medium at T3；
When the target temperature that the T3 goes out is greater than preset temperature, the third heat exchanger and heater are suitable for changing measured piece
Third cooling medium temperature, to control temperature of the third cooling medium at T3.
2. test as described in claim 1 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is that the test cooling medium double-heat exchanger series connection low temperature high temperature switching control includes first circulation and side
Logical circuit；
The first threeway ratio adjusting valve is suitable for changing second medium and enters second heat exchanger and first heat exchanger
Uninterrupted, to control the temperature at T1.
3. test as claimed in claim 2 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is,
The first threeway ratio adjusting valve controls aperture by PLC controller, to change second medium into the second heat exchange
The uninterrupted of device and first heat exchanger.
4. test as claimed in claim 3 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is,
The first circulation successively includes that first circulation pump, the first threeway ratio adjusting valve and the second heat are handed over according to loop direction
Parallel operation；
The bypass circulation includes the first threeway ratio adjusting valve and first heat exchanger；
The first threeway ratio adjusting valve controls aperture by PLC controller, to change second medium into the second heat exchange
The uninterrupted of device and first heat exchanger, to control the temperature at T1.
5. test as claimed in claim 4 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is that the PLC controller is suitable for controlling the third cooling medium by two three-way diverter valves to be followed into second
Ring respectively enters third circulation and the 4th circulation；
The third cooling medium enters the ratio of third circulation and the 4th circulation by changing opening for the second three-way control valve
It spends to change to change the temperature of third cooling medium.
6. test as claimed in claim 5 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is that the aperture of second three-way control valve controls aperture by PLC controller.
7. test as claimed in claim 6 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is,
The second circulation successively includes the water inlet of third cooling medium, second circulation pump, three-way diverter valve, according to loop direction
Two heat exchangers, another three-way diverter valve and the water outlet of third cooling medium；
Third circulation successively includes the water inlet of third cooling medium, second circulation pump, three-way diverter valve, the according to loop direction
Two three-way control valves, heater, another three-way diverter valve and the water outlet of third cooling medium；
4th circulation successively includes the water inlet of third cooling medium, second circulation pump, three-way diverter valve, the according to loop direction
Two three-way control valves, second heat exchanger, another three-way diverter valve and the water outlet of third cooling medium；
The PLC controller be suitable for entering by two three-way diverter valves control third cooling mediums second circulation or
Person respectively enters third circulation and the 4th circulation；
The PLC controller is further adapted for the aperture by changing three-way control valve to change second cooling medium into the 4th
The ratio of circulation and the 5th circulation, to controlled in the temperature that T3 goes out the second cooling medium.
8. test as claimed in claim 7 cooling medium double-heat exchanger series connection low temperature high temperature switching control, special
Sign is,
The first circulation and the second circulation are all connected with an expansion tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822269206.0U CN209689473U (en) | 2018-12-30 | 2018-12-30 | Test cooling medium double-heat exchanger series connection low temperature high temperature switching control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822269206.0U CN209689473U (en) | 2018-12-30 | 2018-12-30 | Test cooling medium double-heat exchanger series connection low temperature high temperature switching control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209689473U true CN209689473U (en) | 2019-11-26 |
Family
ID=68597776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822269206.0U Active CN209689473U (en) | 2018-12-30 | 2018-12-30 | Test cooling medium double-heat exchanger series connection low temperature high temperature switching control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209689473U (en) |
-
2018
- 2018-12-30 CN CN201822269206.0U patent/CN209689473U/en active Active
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Address after: 215536 No. 1, XingMao Road, Bixi street, Changshu, Suzhou, Jiangsu Patentee after: Suzhou Intermold Technology Co.,Ltd. Address before: No. 22, Maqiao Industrial Square, Yanjiang Industrial Zone, Changshu Economic Development Zone, Suzhou City, Jiangsu Province, 215513 Patentee before: SUZHOU YINGTEMO AUTOMOBILE TECHNOLOGY Co.,Ltd. |