CN206670191U - A kind of air precooling system - Google Patents
A kind of air precooling system Download PDFInfo
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- CN206670191U CN206670191U CN201720315615.2U CN201720315615U CN206670191U CN 206670191 U CN206670191 U CN 206670191U CN 201720315615 U CN201720315615 U CN 201720315615U CN 206670191 U CN206670191 U CN 206670191U
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Abstract
The utility model provides a kind of air precooling system, and water-locator is safeguarded in air separation unit operation for realizing.The system includes：The cold tower of nitrogen；Air cooling tower, the first loop is formed by first circulation pipeline and the cold tower of the nitrogen, and second servo loop is formed by second circulation pipeline and the cold tower of the nitrogen；Water-locator, it is arranged in the first circulation pipeline；When needing to safeguard the water-locator, first loop is turned off, and pass through the second servo loop circulated refrigerated water.
Description
Technical field
It the utility model is related to metal processing sectors, more particularly to a kind of air precooling system.
Background technology
Air precooling system is a part for air separation unit, and effect is to reduce the purification system that air enters air separation unit
Temperature, reduce the saturated water content in air.The specific workflow of air precooling system is：Using chilled water as medium, freezing
Water is cooled to 16 DEG C or so in the cold tower of nitrogen with dirty nitrogen heat exchange, enters back into refrigerator and is further cooled to 7 DEG C or so, then
Heat exchange is carried out into air cooling tower and air contact, reduces air themperature, the chilled water for discharging air cooling tower rises to 20 DEG C, returned again
The cold tower of nitrogen is returned by dirty nitrogen heat exchange, into circulating next time.
Chilled water is to return to the cold tower of nitrogen by being arranged on the water-locator of the cold top of tower of nitrogen, and water-locator can make cold into nitrogen
The uniform fluid flow of tower flows down, and is fully contacted with dirty nitrogen.But if water-locator blocks, chilled water cannot be returned smoothly, this
The liquid level that Shi Keneng causes air cooling tower bottom to accumulate rises, and then air separation unit may be caused to jump car.
In the prior art, if to be safeguarded to water-locator, it is necessary to which whole air separation unit is shut down.But space division
Device, which is shut down, to bring very big influence to normal production.
Utility model content
The utility model provides a kind of air precooling system, and water-locator is carried out in air separation unit operation for realizing
Safeguard.
The utility model provides a kind of air precooling system, including：
The cold tower of nitrogen；
Air cooling tower, the first loop is formed by first circulation pipeline and the cold tower of the nitrogen, and pass through second circulation pipeline
Tower cold with the nitrogen forms second servo loop；
Water-locator, it is arranged in the first circulation pipeline；
When needing to safeguard the water-locator, first loop is turned off, and circulate by the second servo loop
Chilled water.
Optionally, first circulation valve is provided with the first circulation pipeline, is provided with the second circulation pipeline
Second circulation valve；During the first circulation valve shut-off, the first loop shut-off, when the second circulation valve is opened,
Chilled water can circulate in the second servo loop.
Optionally, the system also includes：
Water compensating valve, it is arranged on the cold tower of the nitrogen, is connected with a water source, for turning off first loop, and passes through
During the second servo loop circulated refrigerated water, the chilled water from the water source is supplemented to the cold tower of the nitrogen.
Optionally, the system also includes：
Draining water compensating valve, it is arranged on the cold tower of the nitrogen, is connected with the water source, and set location and the cold tower of the nitrogen is pre-
If maximum stage it is contour, discharge freezing when being more than or equal to the maximum stage for the chilled water water level in the cold tower of the nitrogen
Water, and turning off first loop, and during by the second servo loop circulated refrigerated water, come to the cold tower supplement of the nitrogen
The chilled water at the water source.
Optionally, the system also includes：
Dirty nitrogen inlet duct road, it is connected with the dirty source nitrogen and the cold tower of the nitrogen；
Dirty nitrogen valve, it is arranged on the dirty nitrogen inlet duct road；Wherein, when shut-off first loop, and pass through
During the second servo loop circulated refrigerated water, the dirty nitrogen valve shut-off.
Optionally, the system also includes：
Drain tap, the dirty nitrogen inlet duct road being arranged between the dirty nitrogen valve and the dirty source nitrogen
On；The drain tap is opened when air pressure reaches preset pressure in the dirty nitrogen inlet duct road.
Optionally, the system also includes：
Air discharge duct road, it is arranged at the top of the air cooling tower；
Temperature-detecting device, it is arranged on the air discharge duct road, for detecting and exporting the air cooling tower discharge
The temperature of air.
Optionally, the system also includes：
Draining valve, it is arranged on the air cooling tower bottom.
Optionally, the system also includes：
Chilled water pump, it is arranged on the first circulation pipeline and the second circulation pipeline.
Optionally, the system also includes：
Refrigerator, it is arranged on the first circulation pipeline and the second circulation pipeline.
Said one or multiple technical schemes in the embodiment of the present application, at least there is following one or more technology effects
Fruit：
In the technical scheme of the embodiment of the present application, the cold tower of nitrogen is formed first time with air cooling tower by first circulation pipeline
Road, and second servo loop is formed by second circulation pipeline, water-locator is then arranged in first circulation pipeline, then, work as needs
When being safeguarded to water-locator, the first loop is turned off, and pass through second servo loop circulated refrigerated water.It can be seen that behind the first loop of shut-off
Attendant can be safeguarded to water-locator, simultaneously as chilled water is circulated by second servo loop, then air precooling
System still can continue to run with, and be cooled to enter the air of system.Thus, the utility model solves in the prior art
Air separation unit, which must be shut down, could safeguard the technical problem of water-locator, realize in air separation unit running, online to cloth
The technique effect that hydrophone is safeguarded, reduce the influence to production.
Brief description of the drawings
Fig. 1 is the schematic diagram of air precooling system in the embodiment of the present application；
Fig. 2 is the first circuit diagram in the air precooling system shown in Fig. 1；
Fig. 3 is the second servo loop schematic diagram in the air precooling system shown in Fig. 1.
Embodiment
The utility model provides a kind of air precooling system, and water-locator is carried out in air separation unit operation for realizing
Safeguard.
In order to solve the above-mentioned technical problem, technical scheme general thought provided by the utility model is as follows：
In the technical scheme of the embodiment of the present application, the cold tower of nitrogen is formed first time with air cooling tower by first circulation pipeline
Road, and second servo loop is formed by second circulation pipeline, water-locator is then arranged in first circulation pipeline, then, work as needs
When being safeguarded to water-locator, the first loop is turned off, and pass through second servo loop circulated refrigerated water.It can be seen that behind the first loop of shut-off
Attendant can be safeguarded to water-locator, simultaneously as chilled water is circulated by second servo loop, then air precooling
System still can continue to run with, and be cooled to enter the air of system.Thus, the utility model solves in the prior art
Air separation unit, which must be shut down, could safeguard the technical problem of water-locator, realize in air separation unit running, online to cloth
The technique effect that hydrophone is safeguarded, reduce the influence to production.
Technical scheme is described in detail below by accompanying drawing and specific embodiment, it should be understood that the application
Specific features in embodiment and embodiment are the detailed description to technical scheme, rather than to present techniques
The restriction of scheme, in the case where not conflicting, the technical characteristic in the embodiment of the present application and embodiment can be mutually combined.
Fig. 1 is refer to, for the schematic diagram of air precooling system in application embodiment.As shown in figure 1, air precooling system bag
Include the cold tower 1 of nitrogen and air cooling tower 2.The structure of the cold tower of nitrogen and air cooling tower in the embodiment of the present application and function and nitrogen of the prior art
Cold tower is similar with air cooling tower, therefore just no longer describes in detail.
Water-locator 11 is arranged on the cold top of tower 1 of nitrogen, and chilled water is discharged into from the cold top of tower 1 of nitrogen.The cold tower 1 of nitrogen and air cooling tower 2 it
Between include two loops, be specially：The first loop formed by first circulation pipeline, as shown in Fig. 2 and being followed by second
Endless tube road forms second servo loop, as shown in Figure 3.Chilled water flows in first circulation pipeline, can enter air cooling tower from the cold tower 1 of nitrogen
2, then return to the cold tower 1 of nitrogen from air cooling tower 2.Chilled water flows in second circulation pipeline, also can enter air cooling tower 2 from the cold tower 1 of nitrogen,
Again the cold tower 1 of nitrogen is returned to from air cooling tower 2.Wherein, water-locator 11 is arranged in first circulation pipeline.
During specific implementation, first circulation pipeline and second circulation pipeline can be separately provided completely, can also be as
Shown in Fig. 1-Fig. 3, a part of pipeline is shared, and then economize on resources.The application those of ordinary skill in the art can basis
Actually it is configured, the application is not particularly limited.
For the ease of the first loop of control and the break-make of second servo loop, first circulation valve is provided with first circulation pipeline
Door 31.When first circulation valve 31 is opened, the first loop leads to, and chilled water can circulate in the first loop；Work as first circulation
When valve 31 turns off, the first loop disconnects, and chilled water can not circulate in the first loop.When second circulation valve 32 is opened,
Second servo loop leads to, and chilled water can circulate in the second loop；When second circulation valve 32 turns off, second servo loop disconnects, cold
Freezing water can not circulate in the second loop.
When that need not be safeguarded to water-locator 11, first circulation valve 31 can be only opened, chilled water is only passed through
First circuit cycle, first circulation valve 31 and second circulation valve 32 can also be opened, make chilled water in the first loop and
Circulated simultaneously in secondary circuit.The application those of ordinary skill in the art can be according to being actually configured, and the application is not done
Concrete restriction.
And when needing to safeguard water-locator 11, shut-off first circulation valve 31, and then disconnect the first loop.Together
When, second circulation valve 32 is opened, chilled water is only circulated in the second loop.Can continue in the cold tower of nitrogen due to chilled water and
Circulated between air cooling tower, be air cooling-down, therefore air separation unit can continues to run with, and without shutting down, realizes online dimension
Protect water-locator.
During specific implementation, any moment after attendant can disconnect in the first loop enters into the cold tower 1 of nitrogen
Row is safeguarded.Further, the molecular sieve heating period of air precooling system and cold blowing stage are longer compared to other phases-times, and
It is smaller to the influence of air precooling system in itself, therefore perform dimension into the cold tower 1 of nitrogen in molecular sieve heating period and cold blowing stage
Protect as preferably selection.
Optionally, in order to avoid when water-locator is safeguarded, the chilled water of the cold bottom of tower 1 accumulation of nitrogen is very few, influences pair
The cooling effect of air, or even the water level of the cold bottom freeze water of tower 1 of nitrogen cause to jump car shutdown less than lowest water level, in the application
In embodiment, air precooling system also includes water compensating valve 12.Specifically, water compensating valve 12 is arranged on the cold tower 1 of nitrogen, and with one
Water source (accompanying drawing is not shown) connects.The water source is the water source beyond air precooling system.During specific implementation, the water compensating valve
12 can be arranged on the cold top of tower 1 of nitrogen, or be arranged on the cold wall of tower 1 of nitrogen, as shown in figure 1, the utility model does not do specific limit
System.In addition, during specific implementation, the auxiliary water compensating valve 12 such as bypass can also be set.
When turning off the first loop and by second servo loop circulated refrigerated water, water compensating valve 12 can be opened, is mended into the cold tower 1 of nitrogen
The chilled water from water source is filled with, strengthens cooling-down effect.Certainly, when open water compensating valve, and open the aperture of water compensating valve by
According to actually being selected, the application is not particularly limited those skilled in the art.
Further, the air precooling system in the embodiment of the present application can also include draining water compensating valve 13.Specifically,
Draining water compensating valve 13 is arranged on the cold tower 1 of nitrogen, and is also connected with the water source beyond an air precooling system.Implementing
Cheng Zhong, draining water compensating valve 13 can be with identical with the water source that water compensating valve 12 above is connected, can also be different, and the application is not done
Concrete restriction.
Draining water compensating valve 13 is used for draining or moisturizing.Specifically, draining water compensating valve 13 is arranged on the cold wall of tower 1 of nitrogen,
Specific set location and the default maximum stage of the cold tower of nitrogen are contour.Therefore, when the cold bottom freeze water of tower 1 of nitrogen water level be more than etc.
When maximum stage, it is drainage direction that draining water compensating valve 13, which switches flow direction, and unnecessary chilled water is arranged from the cold tower 1 of nitrogen
Go out, chilled water water level is no more than maximum stage.In addition, the first loop of shut-off and during by second servo loop circulated refrigerated water, can
The flow direction of draining water compensating valve 13 is switched into moisturizing direction, the water at water source is added in the cold tower 1 of nitrogen, and in chilled water
Water level discharge unnecessary chilled water when being more than or equal to maximum stage.
In addition, refer to Fig. 1, the air precooling system in the embodiment of the present application also includes dirty nitrogen inlet duct road.Dirty nitrogen
One end of gas air inlet pipeline connects dirty source nitrogen, and the other end is then connected on the cold tower 1 of nitrogen, the dirty nitrogen of dirty source nitrogen to be sent
Enter the cold tower 1 of nitrogen for chilled water to cool.Dirty nitrogen valve 33 is provided with dirty nitrogen inlet duct road.When need not be to water-locator 11
When being safeguarded, dirty nitrogen valve 33 is opened, it is allowed to which dirty nitrogen enters the cold tower 1 of nitrogen.When needing to safeguard water-locator 11,
In order to improve the oxygen content in the cold tower 1 of nitrogen, such as improve to oxygen content 19.5%, ensure oxygen needed for attendant,
Dirty nitrogen valve 33 will be turned off, dirty nitrogen can not be entered back into the cold tower 1 of nitrogen.
Certainly, during specific implementation, dirty nitrogen valve should be slowly turned off, avoids the cold tower air pressure big ups and downs of nitrogen.
In addition, on dirty nitrogen exhaust pipe road between dirty nitrogen valve 33 and dirty source nitrogen, it is also provided with being vented
Valve 34.When air pressure on dirty nitrogen inlet duct road is not up to preset pressure, drain tap 34 turns off；On dirty nitrogen inlet duct road
Air pressure when reaching preset pressure, drain tap 34 is opened, and is discharged dirty nitrogen unnecessary in dirty nitrogen inlet duct road, is avoided air pressure
Had an accident more than preset pressure.Wherein, preset pressure is, for example, 33kPa.
Further, the air discharge duct road of air precooling system is arranged on the cold top of tower 1 of nitrogen, for discharging the sky after cooling
Gas.During specific implementation, temperature-detecting device 35 can also be set, the sky discharged to the cold tower of nitrogen 1 on air discharge duct road
Gas carries out temperature detection.In addition, it is additionally provided with draining valve 21 in the bottom of air cooling tower 2.
During specific implementation, temperature detection is carried out to the air of discharge, on the one hand, be easy to need not be to water-locator
The cooling effect of air precooling system is adjusted when being safeguarded, on the other hand, for on-line maintenance water-locator, passes through temperature detection
The temperature that device 35 is detected and exported, the chilled water of the accumulation in air cooling tower 2 is discharged by draining valve 21 in time, or in time
Chilled water is supplemented, ensures cold blowing peak value more than 70 DEG C.
In addition, in the embodiment of the present application, air precooling system also includes chilled water pump 4 and refrigerator 5, is arranged on the cold tower of nitrogen
On first circulation pipeline and second circulation pipeline between 1 and air cooling tower 2.
Said one or multiple technical schemes in the embodiment of the present application, at least there is following one or more technology effects
Fruit：
In the technical scheme of the embodiment of the present application, the cold tower of nitrogen is formed first time with air cooling tower by first circulation pipeline
Road, and second servo loop is formed by second circulation pipeline, water-locator is then arranged in first circulation pipeline, then, work as needs
When being safeguarded to water-locator, the first loop is turned off, and pass through second servo loop circulated refrigerated water.It can be seen that behind the first loop of shut-off
Attendant can be safeguarded to water-locator, simultaneously as chilled water is circulated by second servo loop, then air precooling
System still can continue to run with, and be cooled to enter the air of system.Thus, the utility model solves in the prior art
Air separation unit, which must be shut down, could safeguard the technical problem of water-locator, realize in air separation unit running, online to cloth
The technique effect that hydrophone is safeguarded, reduce the influence to production.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. air precooling system, it is characterised in that including：The cold tower of nitrogen；Air cooling tower, the first loop is formed by first circulation pipeline and the cold tower of the nitrogen, and pass through second circulation pipeline and institute State the cold tower of nitrogen and form second servo loop；Water-locator, it is arranged in the first circulation pipeline；When needing to safeguard the water-locator, first loop is turned off, and pass through the second servo loop circulating frozen Water.
- 2. air precooling system as claimed in claim 1, it is characterised in that be provided with first in the first circulation pipeline and follow Ring valve door, second circulation valve is provided with the second circulation pipeline；During the first circulation valve shut-off, described first time Road turns off, and when the second circulation valve is opened, chilled water can circulate in the second servo loop.
- 3. air precooling system as claimed in claim 2, it is characterised in that the system also includes：Water compensating valve, it is arranged on the cold tower of the nitrogen, is connected with a water source, for is turning off first loop, and by described During second servo loop circulated refrigerated water, the chilled water from the water source is supplemented to the cold tower of the nitrogen.
- 4. air precooling system as claimed in claim 3, it is characterised in that the system also includes：Draining water compensating valve, it is arranged on the cold tower of the nitrogen, is connected with the water source, and set location and the cold tower of the nitrogen is default Maximum stage is contour, and chilled water is discharged when being more than or equal to the maximum stage for the chilled water water level in the cold tower of the nitrogen, And turning off first loop, and during by the second servo loop circulated refrigerated water, institute is come to the cold tower supplement of the nitrogen State the chilled water at water source.
- 5. air precooling system as claimed in claim 4, it is characterised in that the system also includes：Dirty nitrogen inlet duct road, it is connected with the dirty source nitrogen and the cold tower of the nitrogen；Dirty nitrogen valve, it is arranged on the dirty nitrogen inlet duct road；Wherein, when shut-off first loop, and by described During second servo loop circulated refrigerated water, the dirty nitrogen valve shut-off.
- 6. air precooling system as claimed in claim 5, it is characterised in that the system also includes：Drain tap, it is arranged on the dirty nitrogen inlet duct road between the dirty nitrogen valve and the dirty source nitrogen；Institute Drain tap is stated to open when air pressure reaches preset pressure in the dirty nitrogen inlet duct road.
- 7. air precooling system as claimed in claim 6, it is characterised in that the system also includes：Air discharge duct road, it is arranged at the top of the air cooling tower；Temperature-detecting device, it is arranged on the air discharge duct road, for detecting and exporting the air of the air cooling tower discharge Temperature.
- 8. air precooling system as claimed in claim 7, it is characterised in that the system also includes：Draining valve, it is arranged on the air cooling tower bottom.
- 9. air precooling system as claimed in claim 8, it is characterised in that the system also includes：Chilled water pump, it is arranged on the first circulation pipeline and the second circulation pipeline.
- 10. air precooling system as claimed in claim 9, it is characterised in that the system also includes：Refrigerator, it is arranged on the first circulation pipeline and the second circulation pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720315615.2U CN206670191U (en) | 2017-03-28 | 2017-03-28 | A kind of air precooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720315615.2U CN206670191U (en) | 2017-03-28 | 2017-03-28 | A kind of air precooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206670191U true CN206670191U (en) | 2017-11-24 |
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ID=60373459
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720315615.2U Active CN206670191U (en) | 2017-03-28 | 2017-03-28 | A kind of air precooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258343A (en) * | 2020-01-17 | 2020-06-09 | 扬子江药业集团有限公司 | Medicine oxygen content control system for medicine production and easily-oxidized medicine production method |
-
2017
- 2017-03-28 CN CN201720315615.2U patent/CN206670191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258343A (en) * | 2020-01-17 | 2020-06-09 | 扬子江药业集团有限公司 | Medicine oxygen content control system for medicine production and easily-oxidized medicine production method |
| CN111258343B (en) * | 2020-01-17 | 2021-08-03 | 扬子江药业集团有限公司 | Medicine oxygen content control system for medicine production and easily-oxidized medicine production method |
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