CN208553669U - A kind of drying system for compressed gas - Google Patents
A kind of drying system for compressed gas Download PDFInfo
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- CN208553669U CN208553669U CN201820982277.2U CN201820982277U CN208553669U CN 208553669 U CN208553669 U CN 208553669U CN 201820982277 U CN201820982277 U CN 201820982277U CN 208553669 U CN208553669 U CN 208553669U
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- compressed gas
- drying
- drier
- dew point
- drying system
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Abstract
The utility model relates to a kind of drying systems for compressed gas, system includes the multiple drying units being arranged in parallel connecting with compressor and is responsible for the compressed gas of all drying units outlet connection, each drying unit includes the drier of two parallel connections and only one work, the outlet of every drier is equipped with single machine dew point hygrometer, the compressed gas supervisor is equipped with general pipeline dew point hygrometer, by monitoring the numerical value of single machine dew point hygrometer and general pipeline dew point hygrometer, switch the drier to work in drying unit.Compared with prior art, the utility model effectively improves the dew-point temperature of pneumatic manifold, avoids that dew-point temperature is too low to bring unnecessary energy waste.
Description
Technical field
The utility model relates to technical field of drying, and in particular to a kind of compressed gas drying system.
Background technique
Gas compression is the common process of the industries such as light industry, chemical industry, medicine, smelting, for obtaining high pressure gas.Gas pressure
After contracting, vapor can condense, so needing to remove in this partial coagulation water.In general, the dewpoint requirements of dry required hot-air
It is -25 DEG C, the compressed air dew point of separate unit absorption type dryer outlet is set in -70 DEG C to -25 with the adsorption capacity of drier
Change between DEG C.Using more driers and even by the way of, therefore the dew point of the mixed compressed air of pneumatic manifold with
The difference of more dryer export dew-point temperatures and change.Only when more drier dew points simultaneously at -25 DEG C when mixed pressure
Contracting air dew point reaches -25 DEG C of peak, when more drier dew points simultaneously at -70 DEG C when mixed compressed air dew point reach
To -70 DEG C of minimum.Since the adsorption time of separate unit drier is not quite identical, the dew point of pneumatic manifold is most of
Time all will remain in -25 DEG C or less.Dew-point temperature is lower, although compressed air quality is met the requirements, but removes compressed air
In moisture content it is also more, energy consumption is also higher.Therefore under the premise of meeting requirement, general pipeline compressed air is improved
Dew-point temperature can reduce the energy consumption of compressed-air drier.
Utility model content
The purpose of this utility model is exactly to provide a kind of drying effect to overcome the problems of the above-mentioned prior art
Good, the more energy-efficient drying system for compressed gas.
The purpose of this utility model can be achieved through the following technical solutions: a kind of drying system for compressed gas,
For the drying system for drying the compressed gas that compressor is prepared, which includes sequentially connected heat exchanger, gas-liquid separation
Device, multiple drying units being arranged in parallel and with all drying units outlet connection compressed gas be responsible for, the heat exchanger with
Compressor connection, each drying unit include the drier of two parallel connections and only one work, every drier
Outlet be equipped with single machine dew point hygrometer, compressed gas supervisor is equipped with general pipeline dew point hygrometer.The utility model is by adding general pipeline dew point
Instrument avoids that dew-point temperature is too low to bring unnecessary energy waste to monitor the dew-point temperature of compressed gas supervisor in real time.
The air inlet of two driers of each drying unit is equipped with solenoid valve, and the drying system is equipped with and is used for
The controller of solenoid valve opening and closing is controlled, the controller is connect with single machine dew point hygrometer and general pipeline dew point hygrometer.It is controlled by controller
The switch of solenoid valve processed more automates to realize the switching of drier.
The quantity of the drying unit is 3~5.
In-situ regeneration unit is equipped in every drier, the in-situ regeneration unit is connect with controller.
The in-situ regeneration unit includes the heating coil being arranged in inside drier and opens to control heating coil
The regeneration solenoid valve of pass, the heating coil are connect with heat exchanger, and the regeneration solenoid valve is connect with controller.Due to from compression
The compressed gas come out in machine has higher temperature, so first heating the water in heating calancria with this part high-temperature gas, then
The water in desiccant is discharged using the higher water of temperature in heating calancria, reaches the purpose of desiccant regeneration.
The controller is PLC controller.
A kind of control method for the drying system of compressed gas as described above, comprising the following steps:
(1) drier connect in each drying unit with compressor, another drier and compressor disconnect, and lead to
The dew-point temperature that single machine dew point hygrometer monitors the exit compressed gas of each drier in connected state is crossed, is revealed by general pipeline
Point instrument monitors the dew-point temperature of compressed gas supervisor respectively；
(2) when meeting following any condition, the connecting line of a certain drier and compressor is disconnected, is opened simultaneously
The connecting line of another drier and compressor in same drying unit:
Condition a: the single machine dew point hygrometer at the dryer export shows that its single machine dew-point temperature is more than or equal to -20 DEG C；
Condition b: the single machine dew point hygrometer at the dryer export shows that its single machine dew-point temperature is less than -20 DEG C, and general pipeline reveals
Point instrument show compressed gas supervisor dew-point temperature be more than or equal to -25 DEG C, and the dew-point temperature at the dryer export be it is all with
It is highest in the drier of compressor connection.
Compared with prior art, the beneficial effects of the utility model are embodied in following several respects:
(1) dew point monitoring for increasing general pipeline, has data analysis to general pipeline compressed air quality.
(2) more drier parallel runnings make the control of pneumatic manifold dew-point temperature more close to setting value.
(3) dew-point temperature for effectively improving pneumatic manifold, avoid dew-point temperature it is too low bring it is unnecessary
Energy waste.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of the utility model；
Fig. 2 is the logical schematic of the utility model control method.
Wherein, 1 is compressor, and 2 be drying unit, and 21 be drier, and 22 be solenoid valve, and 23 be single machine dew point hygrometer, and 24 are
Heating coil, 25 be regeneration solenoid valve, and 26 be check valve, and 3 are responsible for for compressed gas, and 31 be general pipeline dew point hygrometer, and 4 be heat exchanger, and 5 are
Gas-liquid separator.
Specific embodiment
It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model
It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited
In following embodiments.
Embodiment 1
A kind of drying system for compressed gas, the drying system are used to dry the compressed gas that compressor 1 is prepared,
Structure as shown in Figure 1, include the heat exchanger 4 being connect with compressor 1,5,4 drying units being arranged in parallel 2 of gas-liquid separator with
And the compressed gas supervisor 3 with all drying units 2 outlet connection, wherein compressed gas flows in the tube side of heat exchanger 4, cooling
Afterwards, condensed water is excluded in gas-liquid separator 5, the preliminary drying for realizing compressed gas.Each drying unit 2 include two parallel connections and
The drier of only one work, the outlet of every drier are equipped with single machine dew point hygrometer 23, and compressed gas supervisor 3 is equipped with general pipeline dew point
Instrument 31.The air inlet of two driers 21 of each drying unit 2 is equipped with solenoid valve 22, and drying system is equipped with for controlling electricity
The PLC controller that magnet valve 22 is opened and closed, PLC controller are connect with single machine dew point hygrometer 23 and general pipeline dew point hygrometer 31.
In-situ regeneration unit is equipped in every drier 21, in-situ regeneration unit includes sequentially connected regeneration solenoid valve
25, heating calancria 24 and check valve 26, wherein regeneration solenoid valve 2 and check valve 26 are imported and exported with the shell side of heat exchanger connect respectively
It connects, and regeneration solenoid valve 25 is connect with PLC controller.When a certain drier 21 needs to regenerate, it is dry that PLC controller controls this
The corresponding regeneration solenoid valve 25 of dry device 21 is opened, and using the desiccant in hot water heating drier 21, realizes the regeneration of desiccant；
Meanwhile closing another corresponding regeneration solenoid valve 25 of drier 21 in same drying unit.
When single machine dew point hygrometer 23 detects dew-point temperature >=-20 DEG C of 21 exit gas of drier corresponding to it, PLC control
Device processed controls the in-situ regeneration that the corresponding solenoid valve 22 of drier 21 closes and agent is dried by in-situ regeneration unit, together
When, the solenoid valve for being in another drier in same drying unit with the drier 21 is opened.
Or when general pipeline dew point hygrometer 31 detects dew-point temperature >=-25 DEG C of compressed gas supervisor 3, then 4 single machine dew point hygrometers
The 23 highest driers 21 of dew-point temperature detected, PLC controller control the corresponding solenoid valve 22 of drier 21 pass
The in-situ regeneration that agent is dried in in-situ regeneration unit is closed and passes through, meanwhile, it is in same drying unit with the drier 21
The solenoid valve of another drier open, specific control logic is as shown in Figure 2.
Claims (6)
1. a kind of drying system for compressed gas, the drying system is special for drying the compressed gas that compressor is prepared
Sign is, the system include sequentially connected heat exchanger, gas-liquid separator, multiple drying units being arranged in parallel and with it is all
The compressed gas supervisor of drying unit outlet connection, the heat exchanger are connect with compressor, and each drying unit includes two
In parallel and only one work drier, the outlet of every drier are equipped with single machine dew point hygrometer, the compressed gas supervisor
Equipped with general pipeline dew point hygrometer.
2. a kind of drying system for compressed gas according to claim 1, which is characterized in that each drying unit
The air inlets of two driers be equipped with solenoid valve, the drying system is equipped with the controller for controlling solenoid valve opening and closing,
The controller is connect with single machine dew point hygrometer and general pipeline dew point hygrometer.
3. a kind of drying system for compressed gas according to claim 2, which is characterized in that the number of the drying unit
Amount is 3~5.
4. a kind of drying system for compressed gas according to claim 2, which is characterized in that in every drier
It is equipped with in-situ regeneration unit, the in-situ regeneration unit is connect with controller.
5. a kind of drying system for compressed gas according to claim 4, which is characterized in that the in-situ regeneration unit
Regeneration solenoid valve including the heating coil inside drier is arranged in and to control heating coil switch, the heating dish
Pipe is connect with heat exchanger, and the regeneration solenoid valve is connect with controller.
6. according to a kind of any drying system for compressed gas of claim 2~5, which is characterized in that the control
Device is PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820982277.2U CN208553669U (en) | 2018-06-25 | 2018-06-25 | A kind of drying system for compressed gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820982277.2U CN208553669U (en) | 2018-06-25 | 2018-06-25 | A kind of drying system for compressed gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208553669U true CN208553669U (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820982277.2U Active CN208553669U (en) | 2018-06-25 | 2018-06-25 | A kind of drying system for compressed gas |
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| CN (1) | CN208553669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579352A (en) * | 2018-06-25 | 2018-09-28 | 长沙经济技术开发区祥原动力供应有限公司 | A kind of drying system and its control method for compressed gas |
-
2018
- 2018-06-25 CN CN201820982277.2U patent/CN208553669U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579352A (en) * | 2018-06-25 | 2018-09-28 | 长沙经济技术开发区祥原动力供应有限公司 | A kind of drying system and its control method for compressed gas |
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