CN209460651U - A kind of control pressurer system of weather modification laboratory system - Google Patents

A kind of control pressurer system of weather modification laboratory system Download PDF

Info

Publication number
CN209460651U
CN209460651U CN201822110080.2U CN201822110080U CN209460651U CN 209460651 U CN209460651 U CN 209460651U CN 201822110080 U CN201822110080 U CN 201822110080U CN 209460651 U CN209460651 U CN 209460651U
Authority
CN
China
Prior art keywords
control
vacuum
drying machine
control unit
pressurization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201822110080.2U
Other languages
Chinese (zh)
Inventor
丁德平
李睿劼
韩光
宛霞
马新成
周嵬
李喆
王飞
郭欣
张�林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Jingteng Dongsheng Metal Pressure Vessel Manufacturing Co Ltd
BEIJING CITY OFFICE OF ARTIFICIAL INFLUCING CLIMATE
Original Assignee
Beijing Jingteng Dongsheng Metal Pressure Vessel Manufacturing Co Ltd
BEIJING CITY OFFICE OF ARTIFICIAL INFLUCING CLIMATE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Jingteng Dongsheng Metal Pressure Vessel Manufacturing Co Ltd, BEIJING CITY OFFICE OF ARTIFICIAL INFLUCING CLIMATE filed Critical Beijing Jingteng Dongsheng Metal Pressure Vessel Manufacturing Co Ltd
Application granted granted Critical
Publication of CN209460651U publication Critical patent/CN209460651U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/20Control of fluid pressure characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The utility model discloses a kind of control pressurer systems of weather modification laboratory system, including pressurization control unit, vacuum control unit, automatic control system and external connection interface section;The pressurization control unit is used to improve the intracorporal gas pressure of master of the laboratory system;The vacuum control unit is used to reduce the intracorporal gas pressure of master of the laboratory system.The control pressurer system can control the intracorporal gas pressure of master of laboratory system, provide required pressure condition for simulation Examination of atmospheric.

Description

A kind of control pressurer system of weather modification laboratory system
Technical field
The utility model relates to weather modification experimental technique fields, test more particularly to a kind of weather modification The control pressurer system of chamber system.
Background technique
It is well known that substantially there are two types of ways for the experiment of impact at home and abroad environment at present, the first is direct progress family Outer small-scale experiment, the waste for testing generation, which cannot pass through to become after reasonable processing, to be directly discharged in atmospheric environment, More or less can all adverse effect be caused to atmospheric environment;Another kind is indoor small experiment, and common lab is unable to satisfy respectively The conditions such as temperature, pressure or humidity needed for kind meteorology experiment, for example be difficult to simulate the low temperature and subnormal ambient of meters altitude, There is nonrepeatability simultaneously, since scientific experiment generally requires to be accurately controlled experiment condition, and be repeated several times to find more The method of good influence environment, for this purpose, large-scale laboratory main body is established, by the pressure, the temperature that control its closing inner chamber Various weather environments are simulated with the conditions such as humidity;On this basis, a kind of control pressurer system how is provided, with stability contorting The intracorporal pressure of laboratory master provides condition for meteorology experiment, becomes the technology that those skilled in the art need to solve at present Problem.
Utility model content
The purpose of the utility model is to provide a kind of control pressurer system of weather modification laboratory system, the pressure Control system can control the intracorporal gas pressure of master of laboratory system, provide required pressure strip for simulation Examination of atmospheric Part.
In order to solve the above technical problems, the utility model provides a kind of pressure control of weather modification laboratory system System, including pressurization control unit, vacuum control unit, automatic control system and external connection interface section;The pressurization control machine The intracorporal gas pressure of master of the group for improving the laboratory system;The vacuum control unit is for reducing the laboratory The intracorporal gas pressure of the master of system.
Control pressurer system as described above, the pressurization control unit include oil-free water lubrication air compressor machine, multi-stage compression Air filtering core, drying machine and pressure heat exchanger;The outlet of the oil-free water lubrication air compressor machine connects the multi-stage compression air filter The import of core, the outlet of the multi-stage compression air filtering core connect the import of the drying machine, and the outlet of the drying machine is repeatedly The import of the pressure heat exchanger is connect, the outlet of the pressure heat exchanger connects the main body.
Control pressurer system as described above, the drying machine include freezing chamber drying machine and heat absorption type drying machine, described The import of freezing chamber drying machine connects the outlet of the multi-stage compression air filtering core, and the outlet of the freezing chamber drying machine connects institute The import of heat absorption type drying machine is stated, the outlet of the heat absorption type drying machine connects the import of the pressure heat exchanger.
Control pressurer system as described above, the heat absorption type drying machine can be by the pressures from the freezing chamber drying machine The dew point of contracting air is down to -70 DEG C or less.
Control pressurer system as described above, the vacuum control unit include vacuum-control(led) system and vacuum screw pump Group.
Control pressurer system as described above, the vacuum control unit further include steam heat-exchanging unit, and the steam changes Heat engine is mounted on the front end of the vacuum screw rod pump group.
Control pressurer system as described above, the vacuum control unit further include cooling cycle unit, and the cooling follows Ring unit is for adjusting cooling cycle temperature to protect the vacuum screw rod pump group.
Control pressurer system as described above, the automatic control system include pressurization control module, vacuum control module With absolute pressure sensor group.
Control pressurer system as described above, the automatic control system are used for the feedback according to the absolute pressure sensor group Information controls the pressurization control module and the vacuum control module, to adjust the intracorporal pressure of the master.
Control pressurer system as described above, the external connection interface section include the pressurization interface being connect with the main body, Vacuum interface, and the interface portion with the temperature control system of the weather modification laboratory system.
Control pressurer system provided by the utility model is used for weather modification laboratory system, pressure control system System improves the intracorporal gas pressure of master of laboratory system by pressurization control unit, reduces reality by vacuum control unit The intracorporal gas pressure of master for testing chamber system, can be intracorporal by master by the control of pressurization control unit and vacuum control unit Gas pressure control is provided required in setting pressure with meeting the required pressure of different meteorology experiments for meteorology experiment Pressure condition finally provides experiment basis in order to repeating for meteorology experiment for weather modification.
Detailed description of the invention
Fig. 1 is provided a kind of specific reality of the control pressurer system of weather modification laboratory system by the utility model Apply the structural block diagram of example.
Description of symbols:
Control pressurer system 100, pressurization control unit 110, vacuum control unit 120, automatic control system 130;
Air compressor machine 111, multi-stage compression air filtering core 112, freezing chamber drying machine 113, heat absorption type drying machine 114, pressure is changed Hot device 115;
Vacuum-control(led) system 121, vacuum screw rod pump group 122, steam heat-exchanging unit 123, cooling cycle unit 124;
Pressurization control module 131, vacuum control module 132, absolute pressure sensor group 133;
Main body 200.
Specific embodiment
The control pressurer system of the weather modification laboratory system of the utility model, comprising pressurization control unit, very Sky control unit, automatic control system and external connection interface section.Pressurization control unit is used to improve the intracorporal gas of laboratory master Pressure, vacuum pump set is used to reduce the indoor gas pressure of experiment may be implemented by means of the interface with temperature control system The intracorporal pressure change of laboratory master is adjusted under different temperatures.
Pressurization control unit includes oil-free water lubrication air compressor machine, multi-stage compression air filtering core, freezing type drier, heat absorption type Drying machine, efficient pressure heat exchanger can generate the cleaning that can be used for breathing using the combination under the conditions of different temperature Compressed air improves the intracorporal pressure of laboratory master, and oil-free water lubrication air compressor machine can provide the cleaner pressure not contained first Contracting air filters out most particulate matters in air by multi-stage compression air filtering core, carries out by freezing type drier preliminary Compressed air depoint depression (is once in order to avoid containing water in this way down to -70 DEG C using heat absorption type drying machine by gas cooling Point gas frozen block heat exchanger tube when passing through efficient pressure heat exchanger), using efficient pressure heat exchanger by controllable temperature pressure control Gas be transported in the main body of laboratory and go.
Vacuum control unit include vacuum-control(led) system, vacuum screw rod pump group, steam heat-exchanging unit, cooling cycle unit, Using the combination can be improved under condition of different temperatures the intracorporal vacuum degree of laboratory master to experiment need value, due to and Directly laboratory main body is carried out in the case where low temperature to vacuumize the possibility for being possible to occur vacuum screw rod pump assembly and being damaged by frost, So increasing steam heat-exchanging unit in vacuum screw rod pump assembly front end to improve intake air temperature protection vacuum screw rod pump assembly, cooling Cycle Unit can automatically adjust cooling cycle temperature under the high temperature conditions to protect vacuum screw rod pump assembly under high temperature to be unlikely to Damage, utilizes the reduced pressure operation of laboratory main body under combination experiment condition of different temperatures.
Automatic control system includes pressurization control module, vacuum control module and absolute pressure sensor group, according to default With the intracorporal state change of laboratory master, pressurization control module and vacuum control are utilized respectively using the feedback information of sensor group Molding block controls experiment room pressure, and absolute pressure transducer group is formed by the sensor combinations of multistage difference twenty percent, Letter is carried out by automatic control system and pressurization control module, vacuum control module and laboratory main body automatic control system Breath interaction, ensure that the range and precision of pressure control.
External connection interface section includes the pressurization interface and vacuum interface with laboratory main body, with connecing for temperature control system Mouthful.The adaptability that control pressurer system is improved by means of the heating of temperature control system and cooling operation, in different temperatures item Change under part and tests indoor pressure.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation The utility model is described in further detail for mode.
Referring to FIG. 1, Fig. 1 provides the control pressurer system of weather modification laboratory system by the utility model A kind of structural block diagram of specific embodiment.
In the embodiment, control pressurer system is used for weather modification laboratory system, weather modification laboratory System includes laboratory main body, which has closing inner chamber, which is to simulate the space of various weather phenomena, specifically Various weather phenomena are simulated by temperature, pressure and the humidity etc. that control body lumen, are artificial shadow to carry out meteorology experiment It rings weather and experiment basis is provided.
The control pressurer system that the embodiment provides is used for the gas pressure according to control 200 inner cavity of main body needed for experiment, So that meteorology experiment has repeatability, accurate experimental data is provided for weather modification.
In the embodiment, control pressurer system 100 includes pressurization control unit 110, vacuum control unit 120, automatic control System 130 and external connection interface section processed;Wherein, pressurization control unit 110 is used to improve the gas in the main body 200 of laboratory system Body pressure;Vacuum control unit 120 is used to reduce the gas pressure in the main body 200 of laboratory system.It is appreciated that pressurization control The size for the gas pressure in main body 200 that unit 110 or vacuum control unit 120 processed are adjusted can be required come really according to experiment It is fixed.
In specific scheme, pressurization control unit 110 includes air compressor machine 111, multi-stage compression air filtering core 112, drying machine With pressure heat exchanger 115;Wherein, oil-free water lubrication air compressor machine specifically can be selected in air compressor machine 111, and pressure heat exchanger 115 can be selected Efficient pressure heat exchanger.
Wherein, the import of the outlet connection multi-stage compression air filtering core 112 of air compressor machine 111, multi-stage compression air filtering core 112 Outlet connection drying machine import, drying machine outlet connection pressure heat exchanger 115 import, pressure heat exchanger 115 go out Mouth connection main body 200.
After being arranged in this way, air is filtered after the compression of air compressor machine 111 into multi-stage compression air filtering core 112, with filter Except particulate matters most in air, by the compressed air of filtering again after the dry cooling of drying machine, through pressure heat exchanger 115 Into in main body 200, to improve the gas pressure in main body 200.
Wherein, multi-stage compression air filtering core 112 can choose filtering series and filter core at different levels according to actual filtration demand.Filtering Compressed air afterwards can avoid frozen block when through excess pressure heat exchanger 115 of the gas with moisture and exchange heat after drying machine is dry The pipeline of device.
Specifically, drying machine may include freezing chamber drying machine 113 and heat absorption type drying machine 114, wherein freezing chamber drying machine 113 import is connect with the outlet of multi-stage compression air filtering core 112, the outlet of freezing chamber drying machine 113 and heat absorption type drying machine 114 import connection, the outlet of heat absorption type drying machine 114 is connect with the import of pressure heat exchanger 115;That is, through filtering Compressed gas afterwards is after first chilled room drying machine 113 is dry, then dry through heat absorption type drying machine 114.
Wherein, freezing chamber drying machine 113 is for tentatively cooling down to compressed air, 114 pairs of heat absorption type drying machine compressions Air is further cooled down.
When specific setting, heat absorption type drying machine 114 can be by the depoint depression of the compressed air from freezing chamber drying machine 113 To -70 DEG C or less.Certainly, the cooling degree to compressed air is determined when actual setting according to specific needs.
In specific scheme, vacuum control unit 120 includes vacuum-control(led) system 121 and vacuum screw rod pump group 122, In, vacuum-control(led) system 121 can control vacuum screw rod pump group 122 to act, to carry out air suction process to main body 200, to reduce Gas pressure in main body 200.
Further, vacuum control unit 120 further includes steam heat-exchanging unit 123, which is set to true The front end of empty screw rod pump group 122 can play a protective role to vacuum screw rod pump group 122 under the low temperature condition of pole, avoid vacuum spiral Bar pump group 122 is damaged by frost.
It is appreciated that when the gas temperature in main body 200 is very low, if such as at -30 DEG C hereinafter, vacuum screw pump Group 122 is directly evacuated main body 200, then the cryogenic gas of main body 200 may be freezing by vacuum screw rod pump group 122, Shorten the service life of vacuum screw rod pump group 122, increases experimental cost;At this point, if by the Cryogenic air in main body 200 first through steaming After vapour heat-exchange unit 123, then through vacuum screw rod pump group 122, then by heating of the steam heat-exchanging unit 123 to cryogenic gas, It can avoid that vacuum screw rod pump group 122 is caused to damage.
Further, vacuum control unit 120 further includes cooling cycle unit 124, and the cooling cycle unit 124 is for adjusting Cooling cycle temperature is saved to protect vacuum screw rod pump group 122.Under the high temperature conditions, to avoid directly vacuumizing to vacuum screw pump Group 122 causes to damage, and is provided with cooling cycle unit 124 and protects to the vacuum screw rod pump group 122 under hot conditions.It is former Reason is similar to the protection of vacuum screw rod pump group 122 under aforementioned low temperature environment, repeats no more.
In specific scheme, automatic control system 130 includes pressurization control module 131, vacuum control module 132 and absolute pressure Sensor group 133.
Wherein, pressurization control module 131 and pressurization control unit 110 communicate to connect, and automatic control system 130 passes through pressurization Control module 131 realizes the control to pressurization control unit 110, to improve the gas pressure in main body 200.
Wherein, vacuum control module 132 and vacuum control unit 120 communicate to connect, and automatic control system 130 passes through vacuum Control module 132 realizes the control to vacuum control unit 120, to reduce the gas pressure in main body 200.
Wherein, absolute pressure sensor group 133 is used to detect the gas pressure in associated pipe and main body 200, it will be understood that absolutely Pressure sensor group 133 and automatic control system 130 communicate to connect, so that automatic control system 130 is according to absolute pressure sensor group 133 Feedback information control pressurization control module 131 and vacuum control module 132, so that the gas pressure in main body 200 be adjusted To required pressure.
In specific scheme, absolute pressure sensor group 133 includes the pressure sensor of multistage difference range.
In specific scheme, the external interface of control pressurer system 100 includes pressurization interface connect with main body 200, very Null interface, and the interface portion with the temperature control system of weather modification laboratory system.
Obviously, the pressurization control unit 110 of control pressurer system 100 is connect by being pressurized interface with main body 200, vacuum control Unit 120 processed is connect by vacuum interface with main body 200.
Wherein, control pressurer system 100 is also connect with the temperature control system of laboratory system, it will be understood that is actually set When setting, the pressure, temperature of gas are interactional in main body 200, so set, being convenient for control pressurer system 100 and temperature The interjob of control system.
Above to a kind of control pressurer system progress of weather modification laboratory system provided by the utility model It is discussed in detail.Specific case used herein is expounded the principles of the present invention and embodiment, the above reality The explanation for applying example is merely used to help understand the method and its core concept of the utility model.It should be pointed out that being led for this technology For the those of ordinary skill in domain, without departing from the principle of this utility model, if can also be carried out to the utility model Dry improvement and modification, modifications and modifications also fall within the protection scope of the claims of the utility model.

Claims (10)

1. a kind of control pressurer system of weather modification laboratory system, it is characterised in that: including pressurization control unit, very Sky control unit, automatic control system and external connection interface section;The automatic control system and the pressurization control unit and institute State the connection of vacuum control group communication;The outlet of the pressurization control unit is connect with the main body of the laboratory system, described Pressurization control unit is used to improve the intracorporal gas pressure of master of the laboratory system;The vacuum control unit and the reality The main body connection of chamber system is tested, the vacuum control unit is used to reduce the intracorporal gas pressure of master of the laboratory system.
2. control pressurer system according to claim 1, it is characterised in that: the pressurization control unit includes no grease profit Sliding air compressor machine, multi-stage compression air filtering core, drying machine and pressure heat exchanger;The outlet of the oil-free water lubrication air compressor machine connects institute The import of multi-stage compression air filtering core is stated, the outlet of the multi-stage compression air filtering core connects the import of the drying machine, described The outlet of drying machine connects the import of the pressure heat exchanger, and the outlet of the pressure heat exchanger connects the main body.
3. control pressurer system according to claim 2, it is characterised in that: the drying machine include freezing chamber drying machine and Heat absorption type drying machine, the import of the freezing chamber drying machine connect the outlet of the multi-stage compression air filtering core, the freezing chamber The outlet of drying machine connects the import of the heat absorption type drying machine, and the outlet of the heat absorption type drying machine connects the pressure heat exchange The import of device.
4. control pressurer system according to claim 3, it is characterised in that: the heat absorption type drying machine can will come from institute The dew point for stating the compressed air of freezing chamber drying machine is down to -70 DEG C or less.
5. control pressurer system according to claim 1, it is characterised in that: the vacuum control unit includes vacuum control System and vacuum screw rod pump group.
6. control pressurer system according to claim 5, it is characterised in that: the vacuum control unit further includes that steam changes Heat engine group, the steam heat-exchanging machine are mounted on the front end of the vacuum screw rod pump group.
7. control pressurer system according to claim 6, it is characterised in that: the vacuum control unit further includes that cooling follows Ring unit, the cooling cycle unit is for adjusting cooling cycle temperature to protect the vacuum screw rod pump group.
8. control pressurer system according to claim 1-7, it is characterised in that: the automatic control system includes Pressurization control module, vacuum control module and absolute pressure sensor group.
9. control pressurer system according to claim 8, it is characterised in that: the automatic control system is used for according to The feedback information of absolute pressure sensor group controls the pressurization control module and the vacuum control module, to adjust in the main body Pressure.
10. control pressurer system according to claim 1-7, it is characterised in that: the external connection interface section packet Include pressurization interface, the vacuum interface connecting with the main body, and the temperature control with the weather modification laboratory system The interface portion of system processed.
CN201822110080.2U 2017-12-15 2018-12-14 A kind of control pressurer system of weather modification laboratory system Active CN209460651U (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2017217847832 2017-12-15
CN2017113462303 2017-12-15
CN201711346230 2017-12-15
CN201721784783 2017-12-15

Publications (1)

Publication Number Publication Date
CN209460651U true CN209460651U (en) 2019-10-01

Family

ID=65856233

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201811533808.0A Pending CN109542135A (en) 2017-12-15 2018-12-14 A kind of control pressurer system of weather modification laboratory system
CN201822110080.2U Active CN209460651U (en) 2017-12-15 2018-12-14 A kind of control pressurer system of weather modification laboratory system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201811533808.0A Pending CN109542135A (en) 2017-12-15 2018-12-14 A kind of control pressurer system of weather modification laboratory system

Country Status (1)

Country Link
CN (2) CN109542135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110531639A (en) * 2019-09-10 2019-12-03 象限空间(天津)科技有限公司 A kind of pressure simulation device for low flyer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571294A (en) * 1943-10-04 1945-08-17 Air Control Installations Ltd New or improved method of and apparatus for use in testing and constructing radio apparatus and other devices and various materials to withstand meteorological extremes
WO1997009024A1 (en) * 1995-09-06 1997-03-13 Baugh Carl E Apparatus and method for establishing a closed ecological system
CN100590434C (en) * 2006-12-08 2010-02-17 北京航空航天大学 Test apparatus of large-scaled environment simulation
CN102120161B (en) * 2010-12-28 2013-01-23 中国科学院广州能源研究所 Testing simulation system for generation process of diffusion hydrates in precipitates and testing method thereof
CN202683228U (en) * 2012-01-14 2013-01-23 河南科技大学 Air treatment system for environmental simulation test
CN102671719B (en) * 2012-03-12 2015-09-09 中国人民解放军兰州军区乌鲁木齐总医院 The artificial Laboratory Module of the Northwest's flat war particular surroundings health support
CN105892515A (en) * 2016-05-25 2016-08-24 国核工程有限公司 Safety shell test pressure control system and control method thereof
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CN109542135A (en) 2019-03-29

Similar Documents

Publication Publication Date Title
CN209460651U (en) A kind of control pressurer system of weather modification laboratory system
CN107014156B (en) Dried object moisture measurement method, Minton dryer and its control method
CN108007655B (en) A kind of closed container leak detecting device peculiar to vessel and slip detection method
CN105864634B (en) A kind of portable nitrogen purging leak detection vacuumizes charger and application method
CN106178854B (en) A kind of drying device and drying means of gas detection logging sample gas
CN206504870U (en) The enclosed engine intake and exhaust system of simulated high altitude environment atmospheric pressure
CN107423477A (en) air conditioner compressor simulation method and system
CN103234319A (en) Fresh-keeping system of air-conditioned freezer
CN103504460A (en) Method and test device for heating and baking tobacco through heat pump method
CN207262597U (en) Defrost dehumidified environment system in a kind of high/low temperature laboratory
CN202522052U (en) Vacuum oven with drying, blast, nitrogen filling and protection functions
CN103412097A (en) Device and method for detecting emissions of VOC (Volatile Organic Compounds) and formaldehyde
CN208366374U (en) A kind of drying machine performance testing device
CN103783645A (en) Condensing and dehumidifying tobacco leaf curing test method and equipment
CN114060264A (en) Compressor performance test system and test method thereof
CN109729895A (en) A kind of laboratory system of weather modification
CN203587568U (en) VOC (volatile organic compound) and formaldehyde emission detection device
CN207850701U (en) A kind of environmental control system for method of brake dynamometer with electric testing machine
CN109539673A (en) A kind of high-low temperature test chamber using single-stage compressor multi-stage separation Refrigeration Technique
CN210463677U (en) Micro-channel environmental test chamber self-cascade heat regenerator
CN103752144A (en) Dehumidifying compressed air dryer
CN209696634U (en) A kind of comprehensive air compression station compressed air circulatory system
CN202519173U (en) Cooling and dehumidifying air cooling device for fertilizer
CN203587314U (en) Vacuum device with heat exchange function
CN207271022U (en) A kind of industrial fermentation exhaust gas dehydrating unit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant