CN202683228U - Air treatment system for environmental simulation test - Google Patents
Air treatment system for environmental simulation test Download PDFInfo
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- CN202683228U CN202683228U CN 201220015967 CN201220015967U CN202683228U CN 202683228 U CN202683228 U CN 202683228U CN 201220015967 CN201220015967 CN 201220015967 CN 201220015967 U CN201220015967 U CN 201220015967U CN 202683228 U CN202683228 U CN 202683228U
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Abstract
The utility model relates to an air treatment system for an environmental simulation test, the system comprises a humidity adjusting unit and a temperature adjusting unit which are orderly disposed in series; the temperature adjusting unit comprises a refrigeration unit and a heating unit which are orderly disposed; the refrigeration unit comprises a refrigeration pipeline, and refrigeration device for cooling the refrigeration pipeline and cooling gas; the heating unit comprises a heating pipeline, and a heating device for heating the heating pipeline and heating the gas to a required temperature; the refrigeration pipeline is in series connection with the heating pipeline. The system adopts the idea of independent control of the temperature and the humidity; the humidity is adjusted firstly, and then the temperature is adjusted; because the humidity is adjusted in prior, no condensation phenomenon is caused in the air during later refrigeration; an evaporation heat exchanger for refrigeration is in a dry condition all along, and thus no condensate water discharging device needs to be disposed individually.
Description
Technical field
The utility model relates to the adjustable dry gas air supply systems of parameter such as a kind of temperature, flow.
Background technology
The environmental simulation experimental system, phjytotron, environmental test chamber and compbined test chamber etc. is a class provides the Reality simulation working condition for different devices and equipment experimental enviroment system.These experimental enviroment systems all need the air processed, and for the various design parameters of air, such as temperature, humidity, pressure, flow and cleanliness factor etc. strict requirement are arranged.But also there are not all air supply systems of fine adjustment of temperature, flow and pressure in the prior art.
Normally used pilot system is regulated for temperature, humidity, pressure and flow the time not to be had substantially, this system is based on special purposes proposition, because it is to all gas that the air humidity of system is regulated, and after the humidity regulation, the variation of air mass flow, pressure can be coupled in the fluctuation of temperature, so the temperature in later stage, flow and pressure adjusting are actually very complicated.
The temperature and humidity of existing air-conditioning system generally all is to regulate together, like this condensate water recovery device must be set, and the air pressure of air-conditioning system does not need to regulate, and the adjusting of flow does not reach accurate degree yet.In addition, the air treatment system in the present industrial system, the mode of its refrigeration all is to adopt air swell refrigeration.Although the air swell refrigeration system can save a part of merit, but the air themperature of its preparation is generally all subzero 40, even lower, there is obvious advantage in this system when low temperature, but its noise is larger, and is generally on-the-spot away from industrial air feed, but a problem of bringing like this is that the air of handling well will be carried, the fluctuation that this inevitably brings again air themperature pressure is difficult to realize the accurate control of the pressure of temperature.
The utility model content
But the purpose of this utility model provides the dry air air supply system of the parameter fine adjustments such as a kind of temperature, flow, is used to the simulated test environment that satisfactory air is provided.Hereinafter described gas comprises air.
For achieving the above object, system schema of the present utility model is: a kind of air treatment system for environmental simulation test, and this system comprises humidity adjustment unit and the thermostat unit that successively series connection arranges; Described thermostat unit comprises refrigeration unit and the heating unit that sets gradually; Described refrigeration unit comprises refrigeration pipe and is used for refrigeration pipe is lowered the temperature, is used for gas-cooled refrigerating plant; Heating unit comprise heating pipe line and be used for to heating pipe line heat up, with gas-heated to the heater that needs temperature; Refrigeration pipe is connected with heating pipe line.
Described air treatment system also comprises the pressure treatment unit, and the pressure treatment unit is included in one-level pressure relief valve before the thermostat unit and the second depressurized valve after thermostat unit.
Described air treatment system also comprises flow regulating unit, and flow regulating unit comprises and is arranged on the first electric three-way regulating valves on the pipeline before the thermostat unit and is arranged on the second electric three-way regulating valves on the pipeline after the thermostat unit; An outlet of described the first electric three-way regulating valves is used for earial drainage, another outlet connects the thermostat unit entrance, an outlet of described the second electric three-way regulating valves is used for earial drainage, and another outlet connects respectively at least two supply air lines by outlet regulating valve group.
Described refrigerating plant comprises at least one refrigeration unit, and the above refrigeration unit series connection of two-stage arranges; Heater is an electric heater.
Described air treatment system also comprises the field control cabinet, be provided with in the field control cabinet for measurement gas pipeline temperature, pressure and flow, and the computer measurement and control system of actuating equipment in described humidity adjustment unit, thermostat unit and the flow regulating unit is controlled in output.
The utility model adopts refrigeration unit and the heating unit of series connection, starts as required refrigeration and/or heating, realizes the fine adjustment of air themperature; System is simple, and is easy to adjust.
The thinking that system of the present utility model adopts humiture independently to control is regulated first humidity, then regulates temperature; Because humidity preferentially regulates, the later stage during refrigeration in the air without the dewfall phenomenon, the evaporating heat exchanger of refrigeration is in dry cooling condition all the time, need to condensate drain be set separately.
Adjustment adopts refrigeration and mode of heating, and the air themperature of every one-level refrigeration is fixed, and the adjusting of temperature is to realize by controlling electrically heated power; The fine adjustment of pressure is that the one-level pressure regulator valve adopts the manual pressure regulating valve coarse adjustment by former and later two pressure regulator valve controls of adjustment, and the second voltage regulation valve adopts the electric pressure-regulating valve accurate adjustment.
The mode that the utility model adopts the flow classification to carry, two-stage or multistage can be set, depend primarily on every one-level gas supply flow scope, so do is because the effective range of flowmeter is limited, the classification of flow is carried, and mainly the effective range by the flowmeter of measured pipeline determines.
The accurate control of flow is by the indirect measurement control of former and later two electric T-shaped valve discharge quantities of adjustment, adds silencing means in the time of venting;
Description of drawings
Fig. 1 is system construction drawing of the present utility model;
Fig. 2 is thermostat unit control structure figure;
Fig. 3 is that pressure is regulated control structure figure;
Fig. 4 is flow regulating unit control structure figure;
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
At first Compressed Gas is carried out dedusting, oil removing and dry process (humidity regulation); Then the gas after drying being processed carries out the adjustment processing and Flow-rate adjustment is processed; Described adjustment is processed and is comprised: the gas after described dry the processing is processed and heat treated through refrigeration successively, obtained the gas of required temperature.The method also comprises pressure adjusting processing, and pressure is regulated to process and comprised: process front and back in adjustment and all carry out reduced pressure treatment.Described Flow-rate adjustment is processed and is undertaken by the earial drainage mode, comprising: at first carried out the flow coarse adjustment before adjustment is processed, carry out flow rate fine-tuning after adjustment is processed.Described dedusting, oil removing and dry the processing are undertaken by adsorptive drier and oil removal filter.At first freeze, gas cooled is arrived, and then heat, gas-heated is arrived needed temperature.Before and after adjustment, carry out pressure and regulate, before adjustment, carry out the pressure coarse adjustment, after adjustment, carry out the pressure fine setting.Before and after adjustment, carry out Flow-rate adjustment, after Flow-rate adjustment, carry out classification according to the effective range of flowmeter and carry.
Higher from the general temperature of air compressor machine gas out, be fiducial temperature, when the needs temperature was identical with fiducial temperature, refrigeration and heating unit were not all worked.
A kind of air treatment system as shown in Figure 1, this system comprises preliminary regulon, thermostat unit and flow regulating unit; The refrigerating plant that refrigeration unit comprises refrigeration pipe and is used for refrigeration pipe is lowered the temperature; The heater that heating unit comprises heating pipe line and is used for heating pipe line is heated up; Refrigeration pipe is connected with heating pipe line; The entrance of heating pipe line outlet connection traffic regulon.Air treatment system also comprises the pressure treatment unit, and the pressure treatment unit is included in one-level pressure relief valve before the thermostat unit and the second depressurized valve after thermostat unit.Flow regulating unit comprises and is arranged on the first electric three-way regulating valves on the pipeline before the thermostat unit and is arranged on the second electric three-way regulating valves on the pipeline after the thermostat unit; An outlet of the first electric three-way regulating valves is used for earial drainage, and another outlet connects the thermostat unit entrance, and an outlet of the second electric three-way regulating valves is used for earial drainage, and another outlet connects respectively at least two supply air lines by outlet regulating valve group.Refrigerating plant comprises at least one refrigeration unit, and heater is an electric heater.Air treatment system adopts computer measurement and control system, control core adopts PLC, as shown in the figure, temperature, pressure and the flow (passing through related sensor) of each main node in the PLC sample gas pipeline, PLC is according to each actuating equipment of the corresponding control of these information, such as air compressor machine, refrigeration unit, electric heater, flow valve etc.
In Fig. 1 Air regulating system in running, the gases at high pressure that air compressor machine produces, through dedusting, dewater, send into after the oil removing air accumulator, the gases at high pressure that the adsorptive drier winding is received from air accumulator carry out degree of depth dehumidifying, gas through dehumidifying need to carry out the coarse adjustment of gas pressure, flow, with the adjustment that adapts to gas and follow-up pressure, the requirement of flow accurate adjustment joint, in case the adjustment of gas is finished, begin to carry out the fine adjustment of gas pressure, flow, thereby satisfy humidity, dust, temperature, pressure, the traffic requirement of test gas.
Be specifically described as follows according to Fig. 1-Fig. 4:
Humidity adjustment unit, preliminary regulon adopts low-grade fever regeneration adsorptive drier in other words, adopts one-level adsorptive drier associating ultraprecise oil removal filter can reach-45 ℃ dew-point temperature.
Thermostat unit is taked air cooling-down device and atmosphere temperature rising device tandem working pattern.Adjustment adopts refrigeration and mode of heating, and the air themperature of every one-level refrigeration is fixed, and the adjusting of temperature is by controlling electrically heated the realization; That is to say that at first refrigeration unit is cooled to a temperature with other, then according to actual needs the gas of this temperature is heated, be heated to needed temperature.In the present embodiment, the air cooling-down device is comprised of the dual unit device for cooling, and the one-level refrigeration is mainly born and made air be reduced to 0 ℃ of required cooling load in the left and right sides by 25 ℃; The secondary refrigeration is mainly born and is made air be reduced to-20 ℃ of required cooling loads in the left and right sides by 0 ℃.The atmosphere temperature rising device is comprised of electric heater, can bear the intensification load by 0 ℃ to 100 ℃, evaporimeter, air heater parts are designed to air duct type air-treatment cavity, two ends install flange additional and connect, inside arranges deflector and the air distribution plate of adjusting air-flow direction, distributing homogeneity, and the percent opening of the radian of deflector and water conservancy diversion length and air distribution plate need be through determining after the Computational Fluid Dynamic Analysis.The detection of gas temperature is finished by gasinlet temperature detecting sensor, the rear gas temperature detecting sensor of refrigeration and Outlet Gas Temperature detecting sensor in Fig. 2.Thermoregulator executing agency is that two-stage refrigeration machine and main air heater form, and takes the serial connection mode, that is: the evaporimeter of two-stage refrigeration machine and air heater are connected in series.Controller adopts the auxiliary circuits such as PLC and expansion module, power amplification and isolation module to form.
Flow regulating unit can realize that a test gas minute level Four exports to boiler-plate, and the level Four scope is: one-level: 5～20kg/h; Secondary: 20～80kg/h; Three grades: 80～200kg/h; Level Four: 200～450kg/h.This flow control system is by flow sensor, the first electric three-way regulating valves, the second electric three-way regulating valves and 5 manual modulation valves and Detection ﹠ Controling the electric circuit constitute.Adjustment process is divided two stages: the phase I is the control of system's total flow, according to the test gas traffic requirement, by the aperture size of PLC control electric three-way regulating valves 1, by regulating the outwards flow of venting of distributing T-pipe valve, realize the coarse adjustment of air feed total flow.Second stage is the fine adjustment of gas supply flow, and this stage intends adopting automatic and manual dual mode that gas supply flow is regulated.Under the automated manner, the user is according to the manual modulation valve standard-sized sheet of gas supply flow requirement with corresponding pipeline, the gas supply flow value that detects according to flow sensor, by PLC in real time control the second electric three-way regulating valves lead to the aperture size of steam line, can realize that gas supply flow regulates automatically.Phase I is the control of system's total flow in Fig. 4, and according to the test gas traffic requirement, the aperture size by PLC controls the first electric three-way regulating valves by regulating the outwards flow of venting of distributing T-pipe valve, realizes the coarse adjustment of air feed total flow.Second stage is the fine adjustment of gas supply flow, and this stage intends adopting automatic and manual dual mode that gas supply flow is regulated.Under the automated manner, the user is according to the manual modulation valve standard-sized sheet of gas supply flow requirement with corresponding pipeline, the gas supply flow value that detects according to flow sensor, by PLC in real time control the second electric three-way regulating valves lead to the aperture size of steam line, can realize that gas supply flow regulates automatically.Under the manual mode, by manual adjustments valve regulation gas supply flow, by the detection of corresponding pipeline upper reaches quantity sensor, the aperture of regulating in real time the second electric three-way regulating valves makes it to adapt with the required flow of steam line.
Pressure regulating unit is by arranging pressure-reducing valve before and after temperature control system, the prime pressure-reducing valve is the hand reducing pressure valve, according to system requirements with the pressure coarse adjustment to claimed range, this valve pressure is in case set, generally no longer adjust, the pressure fine adjustment mainly relies on the electronic pressure-reducing valve of rear class, and this pressure-reducing valve can according to the pressure of control system setting, be adjusted in real time.The major function of this unit be the fine adjustment system along journey gas pressure and final working pressure.Pressure at Fig. 3 middle outlet gas is 0.10MPa～0.15MPa, by the real-time detected pressures value of computer measurement and control system, through exporting analog quantity after the algorithm calculating, realizes the closed loop of electronic pressure-reducing valve is controlled automatically.
Computer measurement and control system is mainly based on ancillary equipment such as PC, PLC and expansion module and auxiliary circuits, and the signals collecting of completion system gas temperature, pressure, flow, processing reach in real time control.About TT﹠C system, can adopt TT﹠C system ripe in the prior art, so do not repeat them here.
Two concrete examples:
Gas flow is 200kg/h, and customer requirements control temperature is-10 ℃.
The gasinlet temperature value of computer auto-detection Temperature Treatment casing, its temperature of gas through dehumidifying maintains 25 ℃ (gases at high pressure are substantially constant at this temperature spot through the air themperature after the humidity adjustment unit) substantially, be the inlet temperature of gas temperature control system, exact value can detect by temperature sensor.When this moment, the customer requirements temperature was-10 ℃, judge according to logic, need to open refrigeration machine.Because the one-level refrigeration only can reach 0 ℃, by computer system output control signal, start two stage cooler, secondary refrigeration drop in temperature is near-20 ℃, and computer accurately detects the Outlet Gas Temperature of Temperature Treatment casing this moment, compares with-10 ℃ of setting values, according to the parameter self-tuning pid control algorithm, output represents the pwm signal of required heating power, dynamically adjusts the heating power of air heater, and the closed-loop control process is until reach till the customer requirements temperature.
Gas flow is 20kg/h, and customer requirements control temperature is 60 ℃
The gasinlet temperature value of computer auto-detection Temperature Treatment casing because the customer requirements temperature is 60 ℃, is judged according to logic, does not need to open refrigeration machine, only need to regulate temperature to the power adjustment of air heater and get final product.Therefore computer detects the Outlet Gas Temperature of Temperature Treatment casing, compare with 60 ℃ of setting values, according to the parameter self-tuning pid control algorithm, the pwm signal of the required heating power of output representative, the heating power of control air heater, the closed-loop control process is until reach till the customer requirements temperature.
Claims (5)
1. an air treatment system that is used for environmental simulation test is characterized in that, this system comprises humidity adjustment unit and the thermostat unit that successively series connection arranges; Described thermostat unit comprises refrigeration unit and the heating unit that sets gradually; Described refrigeration unit comprises refrigeration pipe and is used for refrigeration pipe is lowered the temperature, is used for gas-cooled refrigerating plant; Heating unit comprise heating pipe line and be used for to heating pipe line heat up, with gas-heated to the heater that needs temperature; Refrigeration pipe is connected with heating pipe line.
2. a kind of air treatment system for environmental simulation test according to claim 1, it is characterized in that, described air treatment system also comprises the pressure treatment unit, and the pressure treatment unit is included in one-level pressure relief valve before the thermostat unit and the second depressurized valve after thermostat unit.
3. a kind of air treatment system for environmental simulation test according to claim 2, it is characterized in that, described air treatment system also comprises flow regulating unit, and flow regulating unit comprises and is arranged on the first electric three-way regulating valves on the pipeline before the thermostat unit and is arranged on the second electric three-way regulating valves on the pipeline after the thermostat unit; An outlet of described the first electric three-way regulating valves is used for earial drainage, another outlet connects the thermostat unit entrance, an outlet of described the second electric three-way regulating valves is used for earial drainage, and another outlet connects respectively at least two supply air lines by outlet regulating valve group.
4. a kind of air treatment system for environmental simulation test according to claim 3 is characterized in that described refrigerating plant comprises at least one refrigeration unit, and the above refrigeration unit series connection of two-stage arranges; Heater is an electric heater.
5. a kind of air treatment system for environmental simulation test according to claim 4, it is characterized in that, described air treatment system also comprises the field control cabinet, be provided with in the field control cabinet for measurement gas pipeline temperature, pressure and flow, and the computer measurement and control system of actuating equipment in described humidity adjustment unit, thermostat unit and the flow regulating unit is controlled in output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220015967 CN202683228U (en) | 2012-01-14 | 2012-01-14 | Air treatment system for environmental simulation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220015967 CN202683228U (en) | 2012-01-14 | 2012-01-14 | Air treatment system for environmental simulation test |
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| Publication Number | Publication Date |
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| CN202683228U true CN202683228U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220015967 Withdrawn - After Issue CN202683228U (en) | 2012-01-14 | 2012-01-14 | Air treatment system for environmental simulation test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705905A (en) * | 2012-01-14 | 2012-10-03 | 河南科技大学 | Air treatment method and system for environmental simulation tests |
| CN109542135A (en) * | 2017-12-15 | 2019-03-29 | 北京市人工影响天气办公室 | A kind of control pressurer system of weather modification laboratory system |
-
2012
- 2012-01-14 CN CN 201220015967 patent/CN202683228U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705905A (en) * | 2012-01-14 | 2012-10-03 | 河南科技大学 | Air treatment method and system for environmental simulation tests |
| CN102705905B (en) * | 2012-01-14 | 2015-02-04 | 河南科技大学 | Air treatment method and system for environmental simulation tests |
| CN109542135A (en) * | 2017-12-15 | 2019-03-29 | 北京市人工影响天气办公室 | A kind of control pressurer system of weather modification laboratory system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |