CN108295911A - A kind of low temperature environment experimental cabin and its test method - Google Patents
A kind of low temperature environment experimental cabin and its test method Download PDFInfo
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- CN108295911A CN108295911A CN201710022307.5A CN201710022307A CN108295911A CN 108295911 A CN108295911 A CN 108295911A CN 201710022307 A CN201710022307 A CN 201710022307A CN 108295911 A CN108295911 A CN 108295911A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
- B01L1/025—Environmental chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
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- Chemical Kinetics & Catalysis (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of low temperature environment experimental cabin and test methods, including experimental cabin shell, testpieces mounting platform, heat exchanger, heating device, temperature measuring equipment, wind turbine and interior air duct drum.Testpieces, heat exchanger and heating device are set on testpieces mounting platform, heating and cooling are carried out to Laboratory Module inside, temperature measuring equipment measures temperature in experimental cabin, and wind turbine and interior air duct drum make to form circulation air path inside experimental cabin.Temperature, target temperature and the temperature rate that this method is measured according to temperature measuring equipment control temperature in experimental cabin.The present invention makes to form wind circulating system inside experimental cabin, ensures that cabin internal temperature is uniform, test block rapid cooling is, it can be achieved that the heating and cooling process being enable to respond quickly.
Description
Technical field
The present invention relates to cryogenic engineering technical fields, specifically, being to be related to a kind of low temperature environment Laboratory Module and experiment
Method.
Background technology
With the fast development of the technologies such as aerospace, since space equipment and its component are chronically exposed to exceedingly odious space
In cosmos space environment, in order to ensure that space equipment can safely and reliably be run in space environment, before leaving the earth,
Whether simulation and detection space equipment are securely and reliably very necessary in extreme temperature environment.Therefore, environment in recent years is tried
The technology of testing receives great attention, and the overall process of research and development and production is designed through military product, and test condition becomes more next
It is more complicated.
Conventional cryogenic testing equipment generally include an adiabatic shell of height and be set to can be internal heat exchange
Device, heating device and temperature measuring equipment.Tested experimental piece is positioned over enclosure interior, flows through hot friendship by controlling super low temperature refrigeration agent
Parallel operation reduces the environment temperature in low-temperature test equipment, controls the ring in the heating power promotion low-temperature test equipment of heating device
Border temperature, and the temperature measured according to temperature measuring equipment adjusts the heating power of the flow velocity and heating device of refrigerant, makes as a result, low
Environment temperature in temp test facility reaches and schedules very much experimental temperature.
However, traditional low-temperature test equipment is typically only capable to provide narrow test space, meet the examination of small-scale test part
Test demand, it is difficult to meet large-scale experiment part the needs of being tested under specific low temperature environment, as notification number is
" CN204988323U " discloses the Chinese patent of entitled " a kind of adjustable ultra-low temperature surroundings experimental provision ", includes mainly
The low-pressure chamber and Dewar bottle of coaxial arrangement reduce low pressure indoor temperature by filling refrigerant among low-pressure chamber and Dewar bottle,
Also by the way that multiple heating devices promotion low pressure indoor temperature in low-pressure chamber inner cavity is arranged, for the quick sound of guarantee test temperature
It answers, which can only provide the experiment needs of the miniature instruments such as small-scale test space power circuit board card, tap socket, if increasing it
Closed test space, the device would become hard to ensure experimental temperature quick response to meet the experiment demand of large-scale experiment part, this
It is that gaseous exchange is generated often through the temperature difference of different parts in space due to Conventional cryogenic testing equipment, in a timing
In be that temperature tends to be uniform in low-temperature test equipment, and with the increase of test space, if only leaning on the convection current that temperature difference generates,
Environment temperature tends to uniformly that required time will be elongated in equipment so that the quick response of environment temperature becomes in experimental facilities
It is difficult to realize.
Invention content
To solve the above problems, the present invention provides a kind of low temperature environment experimental cabin and its test method, it can be in low temperature
Ensure the quick response of environment temperature in equipment while test space increases in testing equipment.
To achieve the goals above, the present invention proposes a kind of low temperature environment experimental cabin comprising：Shell；Being set to can be with
Internal testpieces mounting platform, to bearing test part；It is set to the heat exchanger of enclosure interior, is located at testpieces and installs
Below platform, freeze to reduce low temperature environment experiment indoor environment temperature by super low temperature refrigeration agent；It is set to enclosure interior
The heating device of bottom tests indoor environment temperature for promoting low temperature environment；And temperature measuring equipment, for detecting low temperature environment
Real time environment temperature in experimental cabin.It is characterized in that, low temperature environment experimental cabin further includes：It is sheathed on the interior air duct of enclosure interior
Cylinder；And it is set to the wind turbine of case top, it is located above interior air duct drum.Space between interior air duct drum and shell and interior wind
The inner cavity of road cylinder forms circulation air path, and accelerates the air-flow in low temperature environment Laboratory Module by the blowing of wind turbine and flow.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, shell
The low head that body includes direct tube section, is set to the upper cover of direct tube section upper end and is set to direct tube section lower end, upper cover, low head
Flanged joint, interior air duct drum is used to be fixed at upper cover or/and the low head with direct tube section.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, wind
Machine includes holder, motor, main shaft and blade, and standoff motor is arranged and is connected with blade by main shaft, blade is set to shell
It is internal.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, shell
The low head that body includes direct tube section, is set to the upper cover of direct tube section upper end and is set to direct tube section lower end, upper cover, low head
Flanged joint, holder is used to be fixed at the top of upper cover with direct tube section, main shaft is connected with upper cover using dynamic sealing.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabins, and feature is, low
Temperature environmental testing cabin further includes at least one observation window for being set to case top, and observation window is regarded using double-layer stainless steel sintering
Mirror, and vacuum form is used between double-layer sight glass.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabins, and feature is, low
Temperature environmental testing cabin further includes at least one connecting terminal for being set to housing exterior walls, and connecting terminal is connected with shell using flange
It connects.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, shell
Internal wall is attached with interior thermal insulating warm-keeping layer.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, heat
Exchanger uses ring fin formula heat exchanger, and is freezed using ultra-low temperature liquid nitrogen.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabins, and feature is, adds
Hot charging is set to the variable-frequency heating device connected using flange form.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, examination
It tests part mounting platform to be fixed at low head, and uses grid.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, surveys
Warm device includes thermometric bar, and thermometric bar one end extends to above testpieces mounting platform, and thermometric bar is provided at least one sensing
Device.
In order to preferably realize above-mentioned purpose, the present invention also provides a kind of low temperature environment experimental cabin, feature is, shell
Vacuum orifice, boost port, pressure relief opening and/or manhole are additionally provided on body.
To achieve the goals above, the present invention also proposes a kind of method of low temperature environment experiment, using above-mentioned any one
Kind low temperature environment experimental cabin carries out low temperature environment experiment, includes the following steps：
(1) wind turbine, temperature measuring equipment, heat exchanger and heating device are powered and are connected to control device；
(2) environment temperature in the low temperature environment Laboratory Module is detected by the temperature measuring equipment, temperature data is sent
To the control module；
(3) control module controls the rotation speed of fan according to the temperature data of reception；
(4) control module is calculated according to the environment temperature, the target temperature of setting and temperature rate,
Obtain temperature-controlled parameter；
(5) control module controls the heat exchanger and heating device according to the temperature-controlled parameter, to the environment
Temperature is controlled；
(6) step (2) to (5) is repeated, the environment temperature is made to be constant at the target temperature.
In conclusion beneficial effects of the present invention are：By the way that the interior air duct drum is arranged inside housings so that low temperature tries
Hatch checking inner space is divided into the intracavity space in space and interior air duct drum between interior air duct drum and inner walls, the two are empty
Between form circulation air path in low-temperature test cabin, be arranged can top wind turbine blowing under, gas exists in the cabin that makes
Circulation air path part flows, and forms airflow circulating, and compared to the mode for relying only on temperature difference generation air-flow in the past, the present invention is using master
Dynamic gas-recycling plant so that space is increased in cabin, also can guarantee that temperature tends to be equal with faster speed in cabin
It is even, to ensure the temperature fast response in large-scale experiment space.
Description of the drawings
Fig. 1 is the stereogram of the low temperature environment experimental cabin of an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the low temperature environment experimental cabin of an embodiment of the present invention；
Fig. 3 is the blower fan structure schematic diagram of the low temperature environment experimental cabin of an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the testpieces mounting platform of the low temperature environment experimental cabin of an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the observation window of the low temperature environment experimental cabin of an embodiment of the present invention；
Fig. 6 is the flow chart of the low temperature environment test method of an embodiment of the present invention；
Wherein, reference numeral
1：Low temperature environment experimental cabin
11：Shell
12：Interior air duct drum
13：Wind turbine
14：Testpieces mounting platform
15：Heat exchanger
16：Heating device
17：Temperature measuring equipment
18：Testpieces
111：Observation window
112：Connecting terminal
113：Interior thermal insulating warm-keeping layer
114：Vacuum orifice
115：Pressure relief opening
116：Boost port
117：Manhole
11A：Upper cover
11B：Direct tube section
11C：Low head
131：Motor
132：Holder
133：Main shaft
134：Blade
135：Pad
136：Dynamic sealing
141：Fixing bolt
142：Platform fixed point
143：Loading end
161：Liquid nitrogen supply mouth
162：Liquid nitrogen floss hole
1111：Quartz glass
1112：Stainless steel outer ring
Specific implementation mode
Technical scheme of the present invention is described in detail with reference to the accompanying drawings and detailed description, but not limiting
The fixed present invention.
It is the stereogram of the low temperature environment experimental cabin of an embodiment of the present invention, Fig. 2 please refer to Fig. 1 and Fig. 2, Fig. 1
For the structural schematic diagram of the low temperature environment experimental cabin of an embodiment of the present invention.As shown in Fig. 2, low temperature environment experimental cabin 1 has
Shell 11 provides reliable test space for low temperature environment and bears internal pressure, and shell 11 includes top-down upper cover
11A, direct tube section 11B and low head 11C, upper cover 11A and low head 11C and direct tube section 11B are all made of flanged joint；In shell
Be arranged with interior air duct drum 12 in 11, interior air duct drum 12 in the junction of upper cover 11A and direct tube section 11B and low head 11C and
The junction of direct tube section 11B is connected and fixed with shell 11, passes through the setting of interior air duct drum 12 so that low temperature environment experimental cabin 1
Closed test space is divided into space and interior air duct drum 12 between 11 inner wall of interior air duct drum 12 and shell by interior air duct drum 12
Intracavity space, 2 segment spaces after segmentation to form a circulation air path in low temperature environment experimental cabin 1.
It is simultaneously the wind turbine knot according to the low temperature environment experimental cabin of an embodiment of the present invention refering to Fig. 2 and Fig. 3, Fig. 3
Structure schematic diagram.As shown in Figures 2 and 3, wind turbine 13 includes motor 131, holder 132, main shaft 133 and blade 134, blade 134
It is connect with motor 131 by main shaft 133, the upper cover 11A of the holder 132 being arranged below motor 131 and shell 11 is in solder joint
It is welded and fixed at 135, and main shaft 133 is connect with upper cover 11A using dynamic sealing 136, therefore, in low temperature environment experimental cabin 1
Under low temperature, vacuum or barotropic condition, remain to keep sealing state；In the present embodiment, in being set to due to wind turbine 13
The top of air duct drum 12, motor 131 is rotated with movable vane piece 134 with setting speed by main shaft 133, under the drive of wind turbine 13,
Gas in low temperature environment experimental cabin 1 flow to lower part from top via the intracavity space of interior air duct drum 12, then via interior air duct
Space between cylinder 12 and shell 11 returns at top wind turbine 13, to make 1 internal gas of low temperature environment experimental cabin by interior wind
The circulation air path that road cylinder 12 and shell 11 are constituted forms the cycle of air-flow, therefore, by the setting of interior air duct drum 12 and wind turbine 13,
So that gas in low temperature environment experimental cabin 1 is flowed, ensure that 1 internal temperature of low temperature environment experimental cabin can quickly tend to be uniform, carry
The high temperature fast response ability of low temperature environment experimental cabin 1.
Please refer to the testpieces installation that Fig. 2 and Fig. 4, Fig. 4 are the low temperature environment experimental cabin of an embodiment of the present invention
The structural schematic diagram of platform.Testpieces mounting platform 14 is set in shell 11, is used for bearing test part 18, as shown in figure 4, examination
It tests on part mounting platform 14 and is provided with multiple fixing bolts 141 and multiple platform fixed points 142, can be incited somebody to action by fixing bolt 141
Bearing test part 18 is safe to be fixed on testpieces mounting platform 14, by platform fixed point 142 by testpieces mounting platform 14
It is fixedly connected with shell 11；In the present embodiment, testpieces mounting platform 14 has 4 platform fixed points 142, each platform
Fixed point 142 is welded on low head 11C supports by stainless steel tube (being not indicate in figure) respectively and fixes, and, testpieces installation
The loading end 143 of platform 14 uses grid, can ensure to flow through loading end while placing testpieces 18 of constant weight
143 is unobstructed with the gas flowing of 18 contact area of testpieces, and in the present embodiment, testpieces mounting platform 14 can load capacity
No less than 0.5 ton of testpieces 18.
Referring to Fig. 2, the lower section of testpieces mounting platform 14 is provided with heat exchanger 15, use liquid nitrogen refrigerating with
The environment temperature inside low temperature environment experimental cabin 1 is reduced, in refrigeration, liquid nitrogen refrigerating agent is by being arranged in 15 one end of heat exchanger
161 inflow heat exchanger 15 of liquid nitrogen supply mouth, through by the liquid nitrogen floss hole 162 in 15 other end of heat exchanger is arranged after refrigeration
Outflow, in the present embodiment, heat exchanger 15 use ring fin formula structure, such structure can be effectively increased heat exchange area and
Heat exchange efficiency is improved, to make total heat exchange area maximize in the confined space of low temperature environment experimental cabin 1, makes full use of liquid nitrogen
Latent heat and sensible heat cool down to gas in low temperature environment experimental cabin 1；Heating device 16 is set to the interior bottom portion of shell 11,
In the lower section of heat exchanger 15, uses flange form electric heater and heating element material is stainless steel, pass through control
The heating power of heating device, to promote the environment temperature in low temperature environment experimental cabin 1；Temperature measuring equipment 17 is set to shell 11
Inside, in the present embodiment, temperature measuring equipment 17 be thermometric bar, one end of thermometric bar extends to testpieces mounting platform 14
Multiple sensors are provided on top and thermometric bar, the temperature change in experimental cabin can be detected in real time, by feeding back the temperature measured
Degrees of data, to adjust cooling or the rate of heat addition to low temperature environment experimental cabin 1.
It is the knot of the observation window of the low temperature environment experimental cabin of an embodiment of the present invention please refer to Fig. 2 and Fig. 5, Fig. 5
Structure schematic diagram.It is provided with observation window 111 on shell 11, facilitates look at 1 closed test situation of low temperature environment experimental cabin；Such as Fig. 5
Shown, observation window 111 is sintered visor using double-layer stainless steel, by the way that quartz glass 1111 and stainless steel outer ring 1112 to be sintered to
One realizes low temperature resistant and good sealing performance, vacuumizes protection among two layers of visor, improves the heat-insulating property of observation window.
Referring to Fig. 2, connecting terminal 112 is set to the outside of shell 11, in the present embodiment, connecting terminal
112 use ceramic material connecting terminal, realize that bilateral is close using clamp nut between internal copper binding post and ceramic shell
Envelope, entire ceramics connecting terminal are mounted between two flange plates that shell 11 is taken over, ensure that and sealed in connecting terminal 112,
If testpieces 18 needs the stimulus that is powered or acquires, cable by the copper binding post of connecting terminal 112 pass through shell 11 with
External power supply and equipment are connected, and meet the demand that testpieces 18 needs external cable；Interior thermal insulating warm-keeping layer 113 is attached to shell
11 inner wall, in the present embodiment, interior thermal insulating warm-keeping layer 113 use the prefabricated expanded material of polyurethane, ensure interior compressive resistance,
And fixed using low temperature glue bond blending bolt locking keel, interior thermal insulating warm-keeping layer 113 further effectively reduces low temperature environment
Experimental cabin 1 leaks heat and consumption is cold.
In addition, in the present embodiment, other devices with different role can also be arranged on shell 11, such as such as Fig. 2
Shown in vacuum orifice 114, pressure relief opening 115, boost port 116 and manhole 117, but not limited to this；Vacuum orifice 114 is arranged
At low head 11C, it can be used to adjust the vacuum degree in low temperature environment experimental cabin 1 when needed；Pressure relief opening 115 and boost port
116 are arranged in the bottom of shell 11, can be by boost port 116 and pressurized gas bottle group or other compression sets, to when needed
Increase the pressure in low temperature environment experimental cabin 1, and low temperature environment experimental cabin 1 is reduced by adjusting the valve at pressure relief opening 115
Interior pressure, to adjust the atmospheric pressure state in low temperature environment experimental cabin 1 as needed；Manhole 117 may be disposed at shell 11
Outer wall is placed/is adjusted the posture of testpieces 18 in cabin by 117 person of being convenient to operation of manhole, or in low temperature environment experimental cabin 1
Device overhauled and safeguarded.
Please continue to refer to Fig. 6, Fig. 6 be according to the flow chart of the low temperature environment test method of an embodiment of the present invention, under
Face will illustrate the low temperature environment test method by taking low temperature environment experimental cabin 1 as described above as an example.As shown in fig. 6,
In step S100, the relevant apparatus in low temperature environment experimental cabin 1 is powered, such as by wind turbine 13, heat exchanger 15, heating device
16 and the cable connection external electrical apparatus of temperature measuring equipment 17 also the cable of testpieces 18 can be passed through wiring if necessary
Terminal 17 is connected to external power supply, in addition, in the present embodiment, wind turbine 13, heat exchanger 15, heating device 16 and
Control cable is also separately included in the cable of temperature measuring equipment 17, these control cables can be connected to control device with respectively by data
It is sent to the control device, or receives control instruction from the control device, which is computer or PLC machine cabinet
Deng；In step s 102, according to real-time in the sensor detection section low temperature environment experimental cabin 1 being arranged on temperature measuring equipment on 17
Environment temperature, and temperature data is sent to control device, it should be appreciated that if be provided only with a sensor, it will be sent out
If the temperature data sent, which is also only, will be sent out by one group of temperature data of sequence of time interval be provided with multiple sensors
The temperature data sent is using time interval as multigroup temperature data of sequence；In step s 103, control device is according to receiving
Temperature data, adjust wind turbine 13 rotating speed, to control the Air flow velocity in low temperature environment experimental cabin 1, to control
The speed of response of environment temperature in low temperature environment experimental cabin 1, it should be appreciated that if control device receives only one group of temperature data
When, the difference of the comparable temperature data and preset target temperature can tune up the rotating speed of wind turbine 13 to add if widely different
Fast temperature-responsive rate can suitably slow down the rotating speed of wind turbine 13 to reduce 1 interior air-flow of low temperature environment experimental cabin if difference is smaller
Influence to the test data of testpieces 18；If control device receives multigroup temperature data, these multigroup temperature are also may compare
Difference between degrees of data can tune up the rotating speed of wind turbine 13 to accelerate temperature-responsive rate if widely different, if difference compared with
It is small, then it can suitably slow down the rotating speed of wind turbine 13 to reduce 1 interior air-flow of low temperature environment experimental cabin to the test data of testpieces 18
It influences；In step s 106, it is calculated according to the temperature data detected and preset target temperature and temperature rate,
Temperature-controlled parameter is obtained, in the present embodiment, temperature-controlled parameter is calculated using proportional-integral-differential pid algorithm, it should be appreciated that
If control device receives multigroup temperature data, can be used mean temperature or maximum temperature or minimum temperature or near
The calculating that temperature-controlled parameter is participated in temperature of the sensor detection of testpieces 18, but not limited to this；In step S108, according to
Calculated temperature-controlled parameter is adjusted to being controlled into trip temperature in low temperature environment experimental cabin 1 according to temperature-controlled parameter in step S106
Liquid nitrogen refrigerating agent flows through the speed of heat exchanger 15 to control rate of temperature fall, or according to the heating power for changing heating device 16 come
Heating rate is controlled, also can coordinated signals be carried out to heat exchanger 15 and heating device 16 as needed, to the liter of setting
Rate of temperature fall reaches target temperature；Finally, step S100~S108 is repeated, keeps environment temperature in low temperature environment Laboratory Module 1 constant
In the target temperature of setting.
The foregoing is merely presently preferred embodiments of the present invention, is not limited to the present invention, any to be familiar with the general of this field
Logical technical staff can design according to the present invention carry out various change and modification, but these variations and modification should all fall into the present invention
The protection domain of appended claims.
Claims (13)
1. low temperature environment experimental cabin, including shell, testpieces mounting platform, heat exchanger, heating device and temperature measuring equipment, described
Testpieces mounting platform, heat exchanger and temperature measuring equipment are set to the enclosure interior, and the heating device is set to shell
Bottom, and the heat exchanger is located at below the testpieces mounting platform, the heat exchanger uses super low temperature refrigeration agent system
It is cold；It is characterized in that：Further include the interior air duct drum for being sheathed on the enclosure interior and the wind turbine for being set to the case top,
And the wind turbine is set to above the interior air duct drum, the space between the interior air duct drum and the shell and the interior wind
The inner cavity of road cylinder forms circulation air path.
2. low temperature environment experimental cabin according to claim 1, it is characterised in that：The shell includes direct tube section, is set to
The upper cover of direct tube section upper end and the low head for being set to direct tube section lower end, the upper cover, low head and direct tube section use method
Orchid connection, the interior air duct drum are fixed at the upper cover or/and the low head.
3. low temperature environment experimental cabin according to claim 1, it is characterised in that：The wind turbine includes holder, motor, main shaft
And blade, the motor for being provided with the holder are connected by the main shaft with the blade, the blade is set to described
Enclosure interior.
4. low temperature environment experimental cabin according to claim 3, it is characterised in that：The shell includes direct tube section, is set to
The upper cover of direct tube section upper end and the low head for being set to direct tube section lower end, the upper cover, low head and direct tube section use method
Orchid connection, the holder are fixed at the top of the upper cover, and the main shaft is connected with the upper cover using dynamic sealing.
5. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：Further include at least one be set to
The observation window of the case top, the observation window is sintered visor using double-layer stainless steel, and is used between the double-layer sight glass
Vacuum form.
6. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：Further include at least one be set to
The connecting terminal of the housing exterior walls, the connecting terminal use flanged joint with the shell.
7. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：In the inner walls are attached with
Thermal insulating warm-keeping layer.
8. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：The heat exchanger is using annular
Finned heat exchanger, using liquid nitrogen refrigerating.
9. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：The heating device is using method
The variable-frequency heating device of blue formula connection.
10. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：The testpieces mounting platform is solid
It is scheduled at the low head, using grid.
11. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that：The temperature measuring equipment includes thermometric
Bar, thermometric bar one end extend to above the testpieces mounting platform, and the thermometric bar is provided at least one sensor.
12. low temperature environment experimental cabin according to claim 1,2 or 3, it is characterised in that；Pumping is additionally provided on the shell
Vacuum port, boost port, pressure relief opening and/or manhole.
13. a kind of method of low temperature environment experiment, it is characterised in that：Utilize any one in 1~claim 11 of claim
The low temperature environment experimental cabin carries out low temperature environment experiment, includes the following steps：
(1) wind turbine, temperature measuring equipment, heat exchanger and heating device are powered and are connected to control device；
(2) environment temperature in the low temperature environment Laboratory Module is detected by the temperature measuring equipment, temperature data is sent to institute
State control module；
(3) control module controls the rotation speed of fan according to the temperature data of reception；
(4) control module is calculated according to the environment temperature, the target temperature of setting and temperature rate, is obtained
Temperature-controlled parameter；
(5) control module controls the heat exchanger and heating device according to the temperature-controlled parameter, to the environment temperature
It is controlled；
(6) step (2) to (5) is repeated, the environment temperature is made to be constant at the target temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710022307.5A CN108295911A (en) | 2017-01-12 | 2017-01-12 | A kind of low temperature environment experimental cabin and its test method |
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| CN201710022307.5A CN108295911A (en) | 2017-01-12 | 2017-01-12 | A kind of low temperature environment experimental cabin and its test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631982A (en) * | 2018-11-26 | 2019-12-31 | 新疆金风科技股份有限公司 | Test equipment |
| CN110918138A (en) * | 2019-12-20 | 2020-03-27 | 沈阳航天新光压力容器有限公司 | Vacuum chamber with stable platform and processing technology thereof |
| CN113049430A (en) * | 2021-03-30 | 2021-06-29 | 中国飞机强度研究所 | High-low temperature impact test device |
| CN113941385A (en) * | 2021-10-15 | 2022-01-18 | 贵州航天计量测试技术研究所 | Ultra-low temperature precise constant temperature device based on liquid nitrogen refrigeration and temperature control method |
| CN114252254A (en) * | 2020-09-24 | 2022-03-29 | 中国石油天然气集团有限公司 | Testing device for simulating working state of valve in underwater environment |
| CN115382585A (en) * | 2022-08-30 | 2022-11-25 | 合肥通用机械研究院有限公司 | Low-temperature vacuum composite experimental device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1764604A2 (en) * | 2005-09-15 | 2007-03-21 | Endress + Hauser Wetzer GmbH + Co. KG | Cooled sampling station |
| CN204730636U (en) * | 2015-06-04 | 2015-10-28 | 无锡迅德环保科技有限公司 | A kind of heated air circulation calcination stove |
| CN105182889A (en) * | 2015-08-07 | 2015-12-23 | 深圳市西宝船舶电子有限公司 | Multifunctional environment simulation cabin |
| CN204964347U (en) * | 2015-07-14 | 2016-01-13 | 北京瑞尔腾普科技有限公司 | Environmental testing apparatus |
-
2017
- 2017-01-12 CN CN201710022307.5A patent/CN108295911A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1764604A2 (en) * | 2005-09-15 | 2007-03-21 | Endress + Hauser Wetzer GmbH + Co. KG | Cooled sampling station |
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