CN107441894A - The gas-drying system and drying means of a kind of automatic switchover - Google Patents
The gas-drying system and drying means of a kind of automatic switchover Download PDFInfo
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- CN107441894A CN107441894A CN201710749409.7A CN201710749409A CN107441894A CN 107441894 A CN107441894 A CN 107441894A CN 201710749409 A CN201710749409 A CN 201710749409A CN 107441894 A CN107441894 A CN 107441894A
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- drying
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- 238000001035 drying Methods 0.000 title claims abstract description 69
- 238000001816 cooling Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000005055 memory storage Effects 0.000 claims description 5
- 239000002274 desiccant Substances 0.000 claims description 4
- 239000002808 molecular sieve Substances 0.000 claims description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 229910018503 SF6 Inorganic materials 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229960000909 sulfur hexafluoride Drugs 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- -1 recycles drier Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of gas-drying system of automatic switchover and drying means, is related to gas technical field of drying.The gas-drying system of the automatic switchover, including two-way drier, opening and closing control is carried out to the corresponding magnetic valve in two-way drier loop by control circuit, realize that two-way dries the automatic switchover in loop, dried gas is stored in stand-by in surge flask；The present invention includes heater, the drier in drier is heated by heater, make the moisture evaporation contained in drier, drier can be recycled, drier need not be dismantled to be changed, energy-conserving and environment-protective, while heating process accelerates the rate of drying of gas again, improves drying efficiency；The present invention is simple in construction, drying efficiency height and environmental protection and energy saving, has very strong dissemination.
Description
Technical field
The invention belongs to gas technical field of drying, more particularly to a kind of gas-drying system of automatic switchover and drying side
Method.
Background technology
Since the fifties in last century, SF6（Sulfur hexafluoride）With its excellent insulating properties and arc quenching characteristic by widely
Applied in high voltage electric equipment.But under the conditions of electric discharge is existing, sulfur hexafluoride can decompose produce it is harmful less fluorinated
Thing, these materials can occur hydrolysis with the micro-moisture contained in sulfur hexafluoride electrical equipment, generate SO2And HF；SO2Can
Further with H2O reaction generations H2SO3.HF and H2SO3With very strong corrosivity, the insulating materials in high voltage electric equipment is produced
Raw corrosiveness, reduces the insulaion resistance on its surface, influences its insulating properties.Furthermore usual SF6In micro-moisture be with water
Existing for the form of steam, upon a drop in temperature, may result in the water that gaseous water-setting forms liquid, be attached to electrode, absolutely
On the piece surfaces such as edge sublist face, easily cause insulating part surface and produce creeping discharge and cause accident.Therefore, detect exactly
SF6The humidity of gas is significant.
In the prior art, SF is determined6The method of gas humidity mainly has two classes, and one kind is detected using instrument, according to instrument
The difference of the principle of device, mainly there are dew point method, electrolysis and capacitance-resistance method etc..It is another kind of to be measured using classical gravimetric method.At present
On-the-spot test mainly measures SF using humidity tester6The humidity of gas, but the sensor of tester is in use
Drift occurs, therefore, it is necessary to is periodically verified with the higher standard humidity check system of precision, to ensure the standard of measurement result
Really with it is consistent.
Currently used humidity check system mainly includes compressor, drier, humidity generator and precise dew-point hygrometer.But
The system needs the extremely low compressed air of humidity as source of the gas, to ensure instrument reliably working.At present, using in air compressor
The mode that gas outlet installs drying tower additional reduces gas humidity, but in use, the molecular sieve of filling holds inside drying tower
Hygroscopic saturation and fail, it is necessary to which artificial regular dry molecular sieves, make troubles to experiment work.
In recent years, the convenience use research to drier in humidity check system and few both at home and abroad, in most cases
It is and the research to desiccant material to drier replacement operation or to the improvement in drier mechanical structure, but does not have
It is related to the research of automatic switchover gas-drying system.Based on this, the research for automatic switchover gas-drying system has actual
Meaning, and automatic switchover gas-drying system is to SF6The Comparability test of gas humidity tester has breakthrough meaning.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of gas-drying system and drying means of automatic switchover, adopts
Gas drying is carried out with double loop, automatically switches and dries gas circuit, drier moist in drier is heated, evaporation drying
The moisture contained in agent, recycles drier, and agent replacement operation, environmental protection section is dried without dismantling drier
Energy；Dried gas can be used for SF6 humidity check systems, carry out humidity Comparability test.
The present invention is that solve above-mentioned technical problem by the following technical solutions：A kind of gas of automatic switchover is dried
System, including drier, surge flask, gas compressor, dew point transducer, multiple magnetic valves and control circuit；The drying
Device includes the first drier and the second drier, and first drier and the second drier include air inlet and exhaust outlet；
The air inlet of first drier includes the first air inlet and the second air inlet, and the exhaust outlet of first drier includes the
One exhaust outlet and second exhaust port；The air inlet of second drier includes the 3rd air inlet and the 4th air inlet, and described
The exhaust outlet of two driers includes the 3rd exhaust outlet and the 4th exhaust outlet；
The gas compressor is connected with first air inlet and the 4th air inlet respectively by pipeline and magnetic valve；Described
Two exhaust outlets are connected by pipeline and magnetic valve with the 3rd air inlet, and the 3rd exhaust outlet passes through pipeline and magnetic valve and second
Air inlet connects；The second exhaust port by magnetic valve and pipeline respectively with the 3rd exhaust outlet, the 4th exhaust outlet and buffering
Bottle connection；The dew point transducer is arranged on the shell of the surge flask, for detecting dew point；The first row gas port passes through
For the pipeline that magnetic valve is drawn as the first discharge outlet, the pipeline that the 4th exhaust outlet is drawn by magnetic valve is used as the second draining
Mouthful；
The temperature sensor, dew point transducer and magnetic valve are electrically connected with the control circuit respectively；Pass through control
Circuit controls being turned on and off for corresponding magnetic valve, that is, realizes the automatic switchover of drying system, gas to be dried is done in two-way
It is dried in dry device loop, dried gas is stored in stand-by in surge flask.
Further, the gas-drying system also includes humidity check system, and the humidity check system passes through pipeline
It is connected with the surge flask, so that the dry gas being stored in surge flask is supplied directly to humidity check system, is compared
Experiment.
Further, the drier includes the shell and sieve plate being arranged in shell, heater and temperature passes
Sensor；Drier is provided between the sieve plate；The temperature sensor, for detecting the temperature in drier；The shell
Both ends be respectively equipped with described air inlet and exhaust outlet；The heater is electrically connected with control circuit, according to temperature
The temperature data of sensor detection, judges the heating effect of heater and the state of cooling of gas, is carried out by heater
Heat, make the moisture evaporation contained in drier, drier can be recycled, and is not required to dismounting drier and is changed, is saved
Can environmental protection.
Further, the heater uses heater strip or heating rod.
Further, the drier is one kind in molecular sieve desiccant or aluminum oxide.
Further, the control circuit includes PLC and the TEMP being connected respectively with PLC
Device, dew point transducer, heater, power module, magnetic valve and button and display module；The temperature sensor, is used for
Detect the temperature in drier；The dew point transducer, for detecting the dew point information of surge flask；The heater, is used for
Agent is thermally dried in drier；The PLC, for the collection number according to temperature sensor, dew point transducer
According to being analyzed and processed, control magnetic valve is turned on and off, and control heater is heated or closed；The button and display
Module, for the temperature monitoring value in setup parameter and display present dryer, the open and-shut mode and dew point monitoring of magnetic valve
Information；The power module, for providing power supply for control circuit.
Compared with prior art, the gas-drying system of automatic switchover provided by the present invention, including two-way drier, lead to
Cross control circuit and opening and closing control is carried out to the corresponding magnetic valve in two-way drier loop, realize that two-way dries oneself of loop
Dynamic switching, dried gas is stored in stand-by in surge flask；The present invention includes heater, by heater to drier
Interior drier is heated, and makes the moisture evaporation contained in drier, and drier can be recycled, without dismantling drying
Device is changed, energy-conserving and environment-protective, while heating process accelerates the rate of drying of gas again, improves drying efficiency；The present invention's
Surge flask is directly connected to by pipeline and humidity check system, and the automatic switchover that loop is dried by two-way can be that humidity verifies
The Comparability test of system provides continuous supply, and facility is provided for Comparability test；The present invention is simple in construction, drying efficiency it is high and
Environmental protection and energy saving, there is very strong dissemination.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only one embodiment of the present of invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the gas-drying system of automatic switchover of the present invention；
Wherein：The driers of 1- first, the driers of 2- second, 3- surge flasks, 4- dew point transducers, 5- magnetic valves A, 6- magnetic valve B,
7- magnetic valves C, 8- magnetic valve D, 9- magnetic valve G, 10- magnetic valve E, 11- magnetic valve F, 12- magnetic valve H, 13- electromagnetic valve I, 14-
First discharge outlet, the discharge outlet of 15- second, 16- heaters, 17- sieve plates, 18- temperature sensors.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made,
Belong to the scope of protection of the invention.
As shown in figure 1, a kind of gas-drying system of automatic switchover provided by the present invention, including it is two driers, slow
Rush 4, nine bottle 3, gas compressor, dew point transducer magnetic valves（Represented with magnetic valve A-I）And control circuit（Do not show in figure
Go out）；Two driers are respectively the first drier 1 and the second drier 2, and the first drier 1 and the second drier 2 are equipped with two
Individual air inlet and two exhaust outlets；Two air inlets of the first drier 1 are respectively the first air inlet and the second air inlet, and first
The two exhaust outlets difference first row gas port and second exhaust port of drier 1；Two air inlets of the second drier 2 are respectively
Three air inlets and the 4th air inlet, two exhaust outlets of the second drier 2 are respectively the 3rd exhaust outlet and the 4th exhaust outlet；
Gas compressor is connected with magnetic valve A5, magnetic valve D8 respectively by pipeline, and magnetic valve A5 and magnetic valve D8 are respectively with
One air inlet and the connection of the 4th air inlet；Second exhaust port is connected with magnetic valve E10 and magnetic valve C7 respectively by pipeline, electromagnetism
Valve C7 is connected with the 3rd air inlet；Second air inlet is connected with magnetic valve B6, magnetic valve B6 by pipeline respectively with magnetic valve F11
Connected with the 3rd exhaust outlet；Magnetic valve E10 is connected with magnetic valve F11 and magnetic valve H12 respectively by pipeline, H12 points of magnetic valve
It is not connected by pipeline with electromagnetic valve I 13 and surge flask 3, electromagnetic valve I 13 is connected with the 4th exhaust outlet；First row gas port passes through electricity
Magnet valve G9 is connected with pipeline, forms the first discharge outlet 14；Magnetic valve H12 is connected to form the second discharge outlet 15 with pipeline；
Temperature sensor 18, dew point transducer 4 and magnetic valve are electrically connected with control circuit respectively；Pass through control circuit control
Being turned on and off for corresponding magnetic valve is made, that is, realizes the automatic switchover of drying system, gas to be dried is returned in two-way drier
It is dried in road, dried gas is stored in stand-by in surge flask 3.
Pipeline between gas compressor and magnetic valve A5, magnetic valve D8, second exhaust port and magnetic valve E10, magnetic valve
The pipeline between pipeline and magnetic valve B6 and magnetic valve F11, the 3rd exhaust outlet between C7 is three-way pipeline, that is, passes through three
Connection for bbreather pipe connects three pipelines, forms T-shaped gas circuit；Between pipeline and magnetic valve, between pipeline and surge flask 3 and
It is connected through a screw thread between pipeline and the air inlet and exhaust outlet of drier.
Magnetic valve A5, magnetic valve B6, magnetic valve C7, magnetic valve D8, magnetic valve G9, magnetic valve E10, magnetic valve F11 and electricity
Magnet valve I13 is two three-way electromagnetic valves, and magnetic valve H12 is four way solenoid valve.
Gas-drying system also includes humidity check system, and humidity check system is connected by pipeline with surge flask 3, so as to
The dry gas being stored in surge flask 3 is supplied directly to humidity check system, and experiment is compared；Pipeline and humidity verification system
It is to be attached by snap joint between system.
Drier includes shell and the sieve plate 17, heater 16 and the temperature sensor 18 that are arranged in shell；
Drier is provided between sieve plate 17；Temperature sensor 18, for detecting the temperature in drier；The both ends of shell be respectively equipped with into
Gas port and exhaust outlet；Heater 16 is electrically connected with control circuit, the temperature data detected according to temperature sensor 18, is sentenced
The heating effect of disconnected heater 16 and the state of cooling of gas, are heated by heater 16, are made in drier
The moisture evaporation contained, drier can be recycled, and are not required to dismounting drier and are changed, energy-conserving and environment-protective.Heater 16 is adopted
Use heater strip.
Control circuit includes PLC and the temperature sensor 18, the dew point transducer that are connected respectively with PLC
4th, heater 16, power module, magnetic valve and button and display module；Temperature sensor 18, for detecting in drier
Temperature, the heating effect and the gas state of cooling of heater 16 are judged according to temperature information；Dew point transducer 4, for examining
The dew point information of gas in surge flask 3 is surveyed, excludes to drift about caused by temperature change, dust and aging, there is provided reliable to survey
Amount；Heater 16, for being thermally dried agent in drier；PLC, for according to temperature sensor 18, dew
The gathered data of point sensor 4 is analyzed and processed, control magnetic valve be turned on and off, control heater 16 heated or
Close；Button and display module, for the temperature monitoring value in setup parameter and display present dryer, the opening and closing shape of magnetic valve
State and dew point monitoring information；Power module, for providing power supply for control circuit.Dew point transducer 4 uses aluminum oxide capacitance-resistance
Sensor.
The method that a kind of gas-drying system of automatic switchover carries out gas drying, including following steps：
（1）By gas compressor by pipeline and magnetic valve A5, magnetic valve D8 respectively with the first air inlet of the first drier 1 and
4th air inlet of the second drier 2 is attached, and opens the power supply of drying system；
（2）Control circuit control magnetic valve A5, magnetic valve C7, magnetic valve E10, magnetic valve H12 open work, magnetic valve B6, electricity
Magnet valve D8, magnetic valve F11, magnetic valve G9, electromagnetic valve I 13 are closed, and gas to be dried passes through after gas compressor compresses
First air inlet enters in the first drier 1；
（3）Start the heater 16 in the first drier 1 and begin to warm up work, magnetic valve C7 is closed, when in the first drier 1
The temperature that detects in the first drier 1 of temperature sensor 18 reach set temperature value after, control circuit control first is dried
Heater 16 in device 1 is closed, and electromagnetic valve I 13 is opened, and is discharged moisture by the second discharge outlet 15, by dried gas
Enter the memory storage of surge flask 3 after cooling, it is standby, complete the first gas for drying loop and dry；
（4）Control circuit control magnetic valve D8, magnetic valve F11, magnetic valve H12, magnetic valve B6 open work, magnetic valve A5, electricity
Magnet valve C7, magnetic valve E10, magnetic valve G9, electromagnetic valve I 13 are closed, and gas to be dried passes through after gas compressor compresses
4th air inlet enters in the second drier 2；
（5）Start the heater 16 in the second drier 2 and begin to warm up work, magnetic valve B6 is closed, when in the second drier 2
The temperature that detects in the second drier 2 of temperature sensor 18 reach set temperature value after, control circuit control second is dried
Heater 16 in device 2 is closed, and magnetic valve G9 is opened, and is discharged moisture by the first discharge outlet 14, by dried gas
Enter the memory storage of surge flask 3 after cooling, it is standby, complete the second gas for drying loop and dry；
（6）Loop automatic switchover is dried to two-way by control circuit and carries out gas drying, dried gas is stored in slow
Rush stand-by in bottle 3；Can be that humidity check system continuously provides dry gas, so as to which experiment is compared；When the first drying
After the completion of the gas drying process in loop, the second drying loop is automatically switched to；Deposited through the first drying dried gas in loop
Storage is in surge flask 3, there is provided experiment is compared to humidity check system, while second dries at the progress gas drying of loop
Reason, dry the gas after cooling and enter the memory storage of surge flask 3, the continuous Comparability test for humidity check system provides the gas of drying
Body.
The continuous drying of gas is realized in automatic switchover between first drying loop and the second drying loop, is ensureing two-way
Drier improves the efficiency of gas drying while not being chronically at working condition, reduce the component deterioration of drying system, prolong
The service life of long drying system, continuous supply can be provided for humidity check system；In the drying process, heater 16 enters
Row heating work, not only heats to drier, recycles drier, without changing, and to being done
Dry gas also functions to heat effect, improves the rate of drying of gas, improves drying efficiency.
Above disclosed is only the embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, can readily occur in change or modification, all
It should be included within the scope of the present invention.
Claims (7)
- A kind of 1. gas-drying system of automatic switchover, it is characterised in that：Including drier, surge flask（3）, gas compressor, Dew point transducer（4）, multiple magnetic valves and control circuit；The drier includes the first drier（1）With the second drier （2）, first drier（1）With the second drier（2）Include air inlet and exhaust outlet；First drier（1）'s Air inlet includes the first air inlet and the second air inlet, first drier（1）Exhaust outlet include first row gas port and the Two exhaust outlets；Second drier（2）Air inlet include the 3rd air inlet and the 4th air inlet, second drier （2）Exhaust outlet include the 3rd exhaust outlet and the 4th exhaust outlet；The gas compressor is connected with first air inlet and the 4th air inlet respectively by pipeline and magnetic valve；Described Two exhaust outlets are connected by pipeline and magnetic valve with the 3rd air inlet, and the 3rd exhaust outlet passes through pipeline and magnetic valve and second Air inlet connects；The second exhaust port by magnetic valve and pipeline respectively with the 3rd exhaust outlet, the 4th exhaust outlet and buffering Bottle（3）Connection；The dew point transducer（4）Installed in the surge flask（3）Shell on, for detecting dew point；Described first The pipeline that exhaust outlet is drawn by magnetic valve is used as the first discharge outlet（14）, pipe that the 4th exhaust outlet is drawn by magnetic valve Road is as the second discharge outlet（15）；The temperature sensor（18）, dew point transducer（4）And magnetic valve is electrically connected with the control circuit respectively；It is logical Cross control circuit and control being turned on and off for corresponding magnetic valve, that is, realize the automatic switchover of drying system, gas to be dried is existed Two-way drier is dried in loop, and dried gas is stored in surge flask（3）It is interior stand-by.
- 2. gas-drying system as claimed in claim 1, it is characterised in that：Also include humidity check system, the humidity school Check system passes through pipeline and the surge flask（3）Connection.
- 3. gas-drying system as claimed in claim 1 or 2, it is characterised in that：The drier includes shell and set Sieve plate in shell（17）, heater（16）And temperature sensor（18）；In the sieve plate（17）Between be provided with drying Agent；The temperature sensor（18）, for detecting the temperature in drier；The both ends of the shell are respectively equipped with described air inlet Mouth and exhaust outlet；The heater（16）It is electrically connected with control circuit.
- 4. gas-drying system as claimed in claim 3, it is characterised in that：The heater（16）Using heater strip or add Hot pin.
- 5. gas-drying system as claimed in claim 3, it is characterised in that：The drier is molecular sieve desiccant or oxidation One kind in aluminium.
- 6. gas-drying system as claimed in claim 1, it is characterised in that：The control circuit include PLC and The temperature sensor being connected respectively with PLC（18）, dew point transducer（4）, heater（16）, power module, electromagnetism Valve and button and display module；The temperature sensor（18）, for detecting the temperature in drier；The dew point transducer （4）, for detecting surge flask（3）The dew point information of interior gas；The heater（16）, for being heated in drier Drier；The PLC, for according to temperature sensor（18）, dew point transducer（4）Gathered data carry out at analysis Reason, control magnetic valve are turned on and off, and control heater（16）Heated or closed；The button and display module, use Temperature monitoring value in setup parameter and display present dryer, the open and-shut mode and dew point monitoring information of magnetic valve；Institute Power module is stated, for providing power supply for control circuit.
- 7. the method that a kind of gas-drying system of automatic switchover carries out gas drying, it is characterised in that including following step Suddenly：（1）Gas compressor is passed through into pipeline and magnetic valve A（5）, magnetic valve D（8）Respectively with the first drier（1）First enter Gas port and the second drier（2）The 4th air inlet be attached, open the power supply of drying system；（2）Control circuit control magnetic valve A（5）, magnetic valve C（7）, magnetic valve E（10）, magnetic valve H（12）Open work, electromagnetism Valve B（6）, magnetic valve D（8）, magnetic valve F（11）, magnetic valve G（9）, electromagnetic valve I（13）Close, gas to be dried passes through gas The first drier is entered by the first air inlet after compressor compresses（1）It is interior；（3）Start the first drier（1）Interior heater（16）Work is begun to warm up, closes magnetic valve C（7）, when first dry Dry device（1）Interior temperature sensor（18）Detect the first drier（1）After interior temperature reaches set temperature value, control circuit Control the first drier（1）Interior heater（16）Close, electromagnetic valve I（13）Open, pass through the second discharge outlet（15）By water Divide discharge, surge flask is entered after dried gas cooling（3）Memory storage, standby, the gas for completing the first drying loop is done It is dry；（4）Control circuit control magnetic valve D（8）, magnetic valve F（11）, magnetic valve H（12）, magnetic valve B（6）Open work, electromagnetism Valve A（5）, magnetic valve C（7）, magnetic valve E（10）, magnetic valve G（9）, electromagnetic valve I（13）Close, gas to be dried passes through gas The second drier is entered by the 4th air inlet after compressor compresses（2）It is interior；（5）Start the second drier（2）Interior heater（16）Work is begun to warm up, closes magnetic valve B（6）, when second dry Dry device（2）Interior temperature sensor（18）Detect the second drier（2）After interior temperature reaches set temperature value, control circuit Control the second drier（2）Interior heater（16）Close, magnetic valve G（9）Open, pass through the first discharge outlet（14）By moisture Discharge, is entered surge flask after dried gas cooling（3）Memory storage, it is standby, complete the second gas for drying loop and dry；（6）Loop automatic switchover is dried to two-way by control circuit and carries out gas drying, dried gas is stored in slow Rush bottle（3）It is interior stand-by.
Priority Applications (1)
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