CN113237677A - Vacuum environment simulation test equipment and test method for variable heat sink space - Google Patents
Vacuum environment simulation test equipment and test method for variable heat sink space Download PDFInfo
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- CN113237677A CN113237677A CN202110405483.3A CN202110405483A CN113237677A CN 113237677 A CN113237677 A CN 113237677A CN 202110405483 A CN202110405483 A CN 202110405483A CN 113237677 A CN113237677 A CN 113237677A
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000004088 simulation Methods 0.000 title claims abstract description 45
- 238000010998 test method Methods 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 204
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 102
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
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- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
- B64G2007/005—Space simulation vacuum chambers
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Abstract
The invention relates to vacuum environment simulation test equipment, in particular to vacuum environment simulation test equipment with a variable heat sink space and a test method. The invention aims to solve the technical problems of high liquid nitrogen consumption and high cost in the test process of the conventional vacuum environment simulation test equipment. The heat sink of the equipment comprises a gate heat sink, an end heat sink and a plurality of independent cylindrical heat sinks, wherein the gate heat sink, the end heat sink and the independent cylindrical heat sinks form a heat sink enclosure space; the gate heat sink is fixedly arranged on the gate; the cylindrical heat sinks are cylindrical heat sinks, and the plurality of cylindrical heat sinks are fixedly arranged on the inner wall of the cylinder body after being axially arranged along the vacuum container; a second guide rail is arranged in the upper area of the space enclosed by the cylindrical heat sink, the second guide rail is arranged on the inner wall of the cylinder body through a top hoisting rod, and the end heat sink is suspended and arranged on the second guide rail through a movable bracket; the movable support is provided with a track roller structure and a locking mechanism, and the nitrogen supply system is respectively connected with the gate heat sink, the end heat sink and the independent cylinder heat sinks.
Description
Technical Field
The invention relates to vacuum environment simulation test equipment, in particular to vacuum environment simulation test equipment with a variable heat sink space and a test method.
Background
According to the environmental test specification of the aerospace products, the aerospace products from components, subsystems to the whole satellite (the whole satellite) are subjected to thermal vacuum tests before launching to verify whether the working performance indexes of the aerospace products in various in-orbit working modes meet the requirements or not, so that potential quality defects possibly introduced in elements, materials, processes and manufacturing links are exposed under the specified test pressure and thermal cycle stress environment.
The vacuum environment simulation test equipment generally comprises a vacuum container, a heat sink, a nitrogen supply system, an infrared heat flow simulation device, a measurement and control system, a vacuum system and the like. The vacuum container is a main body of the space environment simulation test equipment, a heat sink is arranged in the vacuum container, the heat sink encloses an equipment guide rail and a carrying trolley in a space, and various flange holes are formed in a barrel body of the vacuum container and are connected with a vacuum system, a nitrogen supply system, a measurement and control system and other systems.
Before testing, a product to be tested is placed on a carrying trolley in a vacuum container, and an infrared heat flow simulation device is arranged on the periphery of the product to be tested on the carrying trolley. During testing, the vacuum system is utilized to vacuumize the interior of the vacuum container, then the nitrogen supply system is used to continuously introduce liquid nitrogen into the heat sink, and the infrared heat flow simulation system is used to control the temperature of the product.
Thermal vacuum test cycles are typically performed for days to tens of days, depending on the product grade or test complexity, and thermal vacuum test cycles for subsystems and system levels may be longer. During the test, liquid nitrogen was introduced into the apparatus to maintain a low temperature background. The liquid nitrogen consumed for a long time is the largest cost in the thermal vacuum test. Therefore, research on energy conservation and emission reduction of liquid nitrogen is necessary to take effective measures to control the test cost.
Disclosure of Invention
The invention aims to solve the technical problems of high liquid nitrogen consumption and overhigh cost in the test process of the conventional vacuum environment simulation test equipment, and provides vacuum environment simulation test equipment with a variable heat sink space and a test method.
In order to solve the technical problems, the technical solution provided by the invention is as follows:
a vacuum environment simulation test device with variable heat sink space comprises a vacuum container, a heat sink, a nitrogen supply system, a carrying trolley and an infrared heat flow simulation device; the vacuum container comprises a cylinder body with an opening at one end and a gate arranged at the opening end of the cylinder body; the bottom that the vacuum vessel internal heat sinks to enclose into the space is equipped with first guide rail, carries the thing dolly and is located first guide rail, and infrared thermal current analogue means installs the periphery of waiting to test the product on carrying the thing dolly, and its special character lies in:
the heat sink comprises a gate heat sink, an end heat sink and a plurality of independent cylindrical heat sinks, and the gate heat sink, the end heat sink and the independent cylindrical heat sinks are surrounded to form a space;
the gate heat sink is fixedly arranged on the gate;
the cylindrical heat sinks are cylindrical heat sinks, and the plurality of cylindrical heat sinks are arranged along the axial direction of the vacuum container and then fixedly installed on the inner wall of the cylinder body;
a second guide rail is arranged in the upper area of the space enclosed by the cylindrical heat sinks, the second guide rail is arranged on the inner wall of the cylinder body through a top hoisting rod, and the top hoisting rod penetrates through a gap between the adjacent cylindrical heat sinks;
the end heat sink is suspended and mounted on the second guide rail through a movable support; the movable bracket is provided with a track roller structure and a locking mechanism for locking the movable bracket;
the nitrogen supply system is respectively connected with the gate heat sink, the end heat sink and the independent cylindrical heat sinks.
Further, the nitrogen supply system comprises a plurality of heat sink nitrogen inlet pipelines and a plurality of heat sink nitrogen outlet pipelines;
the inlet ends of the heat sink nitrogen inlet pipelines are connected with a nitrogen supply pipeline A outside the tank, and the outlet ends of the heat sink nitrogen inlet pipelines penetrate through the gate or the wall of the tank and are connected with the nitrogen inlet of the gate heat sink, the end heat sink or the plurality of cylindrical heat sinks;
the inlet ends of the multiple heat sink nitrogen outlet pipelines respectively penetrate through the gate or the cylinder wall and are connected with the nitrogen outlet of the gate heat sink, the end heat sink or the multiple cylindrical heat sinks, and the outlet ends B of the multiple heat sink nitrogen outlet pipelines are communicated with the atmosphere;
a plurality of heat sink nitrogen inlet pipelines are respectively provided with a nitrogen inlet valve V, and the nitrogen inlet valves V are positioned outside the vacuum container;
wherein, the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline connected with the end heat sink both adopt flexible metal corrugated pipes;
the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline which are connected with the gate heat sink are both flexible metal corrugated pipes or detachable metal pipelines.
Furthermore, the surfaces of the gate heat sink, the cylinder heat sink and the end heat sink facing the carrying trolley are all coated with high-emissivity aerospace black paint.
Furthermore, a radiation-proof screen is arranged on the surface of one side, away from the carrying trolley, of the end heat sink.
Furthermore, the number of the cylindrical heat sinks is 4-8 along the axial direction of the cylinder body.
Further, first guide rail and second guide rail all include two guide rails that are parallel to each other, and two tip of every guide rail all are equipped with limit structure.
Further, in order to meet the bearing requirement in a low-temperature environment, the first guide rail, the second guide rail, the barrel and the moving support are all made of stainless steel.
The invention also provides a vacuum environment simulation test method of the variable heat sink space, which is characterized in that the vacuum environment simulation test equipment of the variable heat sink space comprises the following steps:
1) mounting a product to be tested and an infrared heat flow simulation device on a carrying trolley;
2) moving the carrying trolley to a gate position close to the vacuum environment simulation test equipment in the variable heat sink space;
3) moving the end part heat sink to a position close to a product to be tested and then locking;
4) vacuumizing the interior of the vacuum container;
5) opening a nitrogen inlet valve V, and continuously introducing liquid nitrogen into gate heat sinks, end heat sinks and effective cylinder heat sinks around the product to be tested; the effective cylindrical heat sink is a cylindrical heat sink which is enclosed into a space enclosed by the heat sinks;
6) and (4) controlling the temperature of the product to be tested by using an infrared heat flow simulation device.
Compared with the prior art, the invention has the following beneficial effects:
1. the vacuum environment simulation test equipment and the test method for the variable heat sink space provided by the invention have the advantages that the end heat sink is designed into a movable structure, and the effective space of the heat sink is changed by moving the end heat sink. Liquid nitrogen is not introduced into unused heat sinks, so that a large amount of liquid nitrogen can be saved, and the purposes of reducing test cost, saving energy and reducing emission are achieved.
2. According to the vacuum environment simulation test equipment and the test method for the variable heat sink space, each heat sink is provided with the independent nitrogen inlet pipeline, the independent nitrogen outlet pipeline and the independent nitrogen inlet valve V, the nitrogen inlet valve V is designed outside the vacuum container, each nitrogen inlet valve V can be independently adjusted according to the test requirement, the nitrogen amount of each cylindrical heat sink is independently controlled through the nitrogen inlet valve V, and the introduction amount of liquid nitrogen is effectively reduced.
3. According to the vacuum environment simulation test equipment and the test method for the variable heat sink space, the metal corrugated hose is used for the nitrogen inlet pipeline and the nitrogen outlet pipeline of the end heat sink in the equipment, and the end heat sink can move along with the movable end heat sink.
4. According to the vacuum environment simulation test equipment and the test method for the variable heat sink space, the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline which are connected with the gate heat sink are both flexible metal corrugated pipes or detachable metal pipelines, so that the gate can be opened when the test is not carried out.
Drawings
FIG. 1 is a schematic structural diagram of a vacuum environment simulation test device with variable heat sink space according to the present invention;
description of reference numerals:
the test method comprises the following steps of 1-a vacuum container, 101-a barrel, 102-a gate, 2-a carrying trolley, 3-a first guide rail, 4-a gate heat sink, 5-an end heat sink, 6-a cylinder heat sink, 7-a second guide rail, 8-a top hoisting rod, 9-a roller structure, 10-a movable support, 11-an infrared heat flow simulation device and 12-a product to be tested.
Detailed Description
The invention is further described below with reference to the figures and examples.
A vacuum environment simulation test device with variable heat sink space is shown in figure 1 and comprises a vacuum container 1, a heat sink, a nitrogen supply system, a carrying trolley 2 and an infrared heat flow simulation device 11; the vacuum container 1 comprises a cylinder body 101 with an opening at one end and a gate 102 arranged at the opening end of the cylinder body 101; the bottom of a space formed by heat sinks in the vacuum container 1 is provided with a first guide rail 3, the carrying trolley 2 is positioned on the first guide rail 3, the infrared heat flow simulator 11 is arranged on the periphery of a product 12 to be tested on the carrying trolley 2 so as to facilitate the transfer of the product, the heat sinks are divided into a gate heat sink 4, an end heat sink 5 and a plurality of independent cylindrical heat sinks 6, and the three parts are surrounded to form the space formed by the heat sinks; the gate heat sink 4 is fixedly mounted on the gate 102; the cylindrical heat sinks 6 are cylindrical heat sinks, a plurality of cylindrical heat sinks 6 are arranged (spliced) along the axial direction of the vacuum container 1 and then fixedly mounted on the inner wall of the cylinder body 101, and the number of the cylindrical heat sinks 6 is preferably 4-8; a second guide rail 7 is arranged in the upper area of the space enclosed by the cylindrical heat sinks 6, the second guide rail 7 is arranged (rigidly connected) on the inner wall of the cylinder 101 through a top hoisting rod 8, and the top hoisting rod 8 penetrates through the gap between the adjacent cylindrical heat sinks 6; the end heat sink 5 is suspended and mounted on the second guide rail 7 through the movable bracket 10, and when the end heat sink 5 moves to the position, farthest from the gate 102, on the second guide rail 7, the equipment can reach the maximum use space; the movable support 10 is provided with a track roller structure 9 and a locking mechanism, the locking mechanism can adopt the existing conventional locking mechanism to lock the movable support 10 on the second guide rail 7, and is mainly used for preventing the end heat sink 5 from moving in the test process; a heat insulation piece made of polytetrafluoroethylene is arranged between the end heat sink 5 and the second guide rail 7; the nitrogen supply system is respectively connected with a gate heat sink 4, an end heat sink 5 and a plurality of independent cylindrical heat sinks 6. And the surfaces of the gate heat sink 4, the cylindrical heat sink 6 and the end heat sink 5 facing the carrying trolley 2 are all coated with high-emissivity aerospace black paint. And a radiation-proof screen is arranged on the surface of one side of the end heat sink 5, which is far away from the carrying trolley 2. First guide rail 3 and second guide rail 7 all include two guide rails that are parallel to each other, and two tip of every guide rail all are equipped with limit structure, and limit structure can adopt current conventional limit structure, for example the stopper. The design of the equipment needs to consider the low-temperature extreme environment and the bearing requirement in the equipment, so that the first guide rail 3, the second guide rail 7 and the movable support 10 are all made of stainless steel, and the cylinder 101 is formed by welding stainless steel materials.
The nitrogen supply system comprises a plurality of heat sink nitrogen inlet pipelines and a plurality of heat sink nitrogen outlet pipelines; the inlet ends of the heat sink nitrogen inlet pipelines are connected with a nitrogen supply pipeline A outside the tank, and the outlet ends of the heat sink nitrogen inlet pipelines penetrate through the gate 102 or the wall of the tank and are connected with the nitrogen inlet of the gate heat sink 4, the end heat sink 5 or the cylindrical heat sinks 6; the inlet ends of the multiple heat sink nitrogen outlet pipelines respectively penetrate through the gate 102 or the cylinder wall and are connected with the nitrogen outlet of the gate heat sink 4, the end heat sink 5 or the multiple cylindrical heat sinks 6, and the outlet ends B of the multiple heat sink nitrogen outlet pipelines are communicated with the atmosphere; wherein, the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline connected with the end heat sink 5 both adopt flexible metal corrugated pipes; the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline connected with the gate heat sink 4 are both flexible metal corrugated pipes or detachable metal pipelines. A plurality of heat sink all is equipped with into nitrogen valve V on advancing the nitrogen pipeline, advances nitrogen valve V and is located vacuum vessel 1 outsidely, and each advances nitrogen valve V and can independently adjust according to the in service behavior.
Each heat sink of the vacuum environment simulation test equipment with the variable heat sink space is provided with an independent nitrogen inlet pipeline, an independent nitrogen outlet pipeline and a nitrogen inlet valve V, and the nitrogen inlet valve V is designed outside the equipment. The cylindrical heat sinks 6 can independently control the nitrogen amount of each cylindrical heat sink 6 through the nitrogen inlet valve V according to the requirement of the experiment. The end heat sink 5 is designed as a movable structure, and the heat sink effective space is changed by moving the end heat sink 5. The end heat sink 5 uses a metal corrugated hose in and out of the nitrogen line in the device.
Examples
The vacuum environment simulation test equipment with the variable heat sink space comprises 4 cylindrical heat sinks (6) which are respectively a cylindrical heat sink a, a cylindrical heat sink b, a cylindrical heat sink c and a cylindrical heat sink d;
six nitrogen inlet valves V are V1-V6 and are respectively arranged on the heat sink nitrogen inlet pipelines of the gate heat sink 4, the cylinder heat sink a, the cylinder heat sink b, the cylinder heat sink c, the cylinder heat sink d and the end heat sink 5;
the vacuum environment simulation test method of the variable heat sink space corresponding to the vacuum environment simulation test equipment of the variable heat sink space comprises the following steps:
1) installing a product 12 to be tested and an infrared heat flow simulator 11 on a carrying trolley 2;
2) moving the carrying trolley 2 to a position close to a gate 102 of the vacuum environment simulation test equipment with the variable heat sink space;
3) the end heat sink 5 is moved to a position between the cylindrical heat sink b and the cylindrical heat sink c close to the product 12 to be tested and then locked so as to reduce the heat sink space, and at the moment, the heat sink effective space is a space surrounded by the gate heat sink 4, the end heat sink 5, the cylindrical heat sink a and the cylindrical heat sink b;
4) vacuumizing the vacuum container 1;
5) respectively introducing liquid nitrogen to the gate heat sink 4, the end heat sink 5, the cylindrical heat sink a and the cylindrical heat sink b, opening nitrogen inlet valves V1, V2, V3 and V6, and introducing liquid nitrogen to a heat sink effective space; the nitrogen inlet valves V4 and V5 are kept closed, and the cylinder heat sink c and the cylinder heat sink d are not communicated with liquid nitrogen, so that the flow of the introduced liquid nitrogen is effectively reduced, a large amount of liquid nitrogen can be saved, and the purposes of saving energy, reducing emission and reducing test cost are achieved;
6) the product 12 to be tested is temperature controlled using an infrared heat flow simulator 11.
What should be noted later is: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for a person skilled in the art to modify the specific technical solutions described in the foregoing embodiments or to substitute part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (8)
1. A vacuum environment simulation test device with variable heat sink space comprises a vacuum container (1), a heat sink, a nitrogen supply system, a carrying trolley (2) and an infrared heat flow simulation device (11); the vacuum container (1) comprises a cylinder body (101) with one open end and a gate (102) arranged at the open end of the cylinder body (101); the bottom that the space was enclosed into to the internal heat of vacuum vessel (1) sinks is equipped with first guide rail (3), carries thing dolly (2) and is located first guide rail (3), and the periphery of waiting to test product (12) on carrying thing dolly (2) is installed in infrared thermal current analogue means (11), its characterized in that:
the heat sink comprises a gate heat sink (4), an end heat sink (5) and a plurality of independent cylindrical heat sinks (6), and the three heat sinks surround the heat sink to form a space;
the gate heat sink (4) is fixedly arranged on the large door (102);
the cylindrical heat sinks (6) are cylindrical heat sinks, and the cylindrical heat sinks (6) are arranged along the axial direction of the vacuum container (1) and then fixedly mounted on the inner wall of the barrel body (101);
a second guide rail (7) is installed in the upper area of the space surrounded by the cylindrical heat sinks (6), the second guide rail (7) is installed on the inner wall of the cylinder body (101) through a top hoisting rod (8), and the top hoisting rod (8) penetrates through a gap between the adjacent cylindrical heat sinks (6);
the end heat sink (5) is arranged on the second guide rail (7) in a hanging manner through a movable bracket (10); the movable support (10) is provided with a track roller structure (9) and a locking mechanism for locking the movable support (10);
the nitrogen supply system is respectively connected with the gate heat sink (4), the end heat sink (5) and the independent cylindrical heat sinks (6).
2. The vacuum environment simulation test equipment of the variable heat sink space of claim 1, wherein:
the nitrogen supply system comprises a plurality of heat sink nitrogen inlet pipelines and a plurality of heat sink nitrogen outlet pipelines;
the inlet ends of the heat sink nitrogen inlet pipelines are connected with a nitrogen supply pipeline A outside the tank, and the outlet ends of the heat sink nitrogen inlet pipelines penetrate through the large door (102) or the wall of the tank and are connected with nitrogen inlets of the gate heat sink (4), the end heat sink (5) or the cylindrical heat sinks (6);
the inlet ends of the heat sink nitrogen outlet pipelines respectively penetrate through the large door (102) or the wall of the cylinder and are connected with the nitrogen outlet of the gate heat sink (4), the end heat sink (5) or the cylinder heat sinks (6), and the outlet ends B of the heat sink nitrogen outlet pipelines are communicated with the atmosphere;
a plurality of heat sink nitrogen inlet pipelines are respectively provided with a nitrogen inlet valve V, and the nitrogen inlet valves V are positioned outside the vacuum container (1);
wherein, the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline connected with the end heat sink (5) both adopt flexible metal corrugated pipes;
the heat sink nitrogen inlet pipeline and the heat sink nitrogen outlet pipeline which are connected with the gate heat sink (4) are flexible metal corrugated pipes or detachable metal pipelines.
3. The vacuum environment simulation test equipment of the variable heat sink space of claim 2, wherein:
and the surfaces of the gate heat sink (4), the cylinder heat sink (6) and the end heat sink (5) facing the carrying trolley (2) are all coated with high-emissivity aerospace black paint.
4. The vacuum environment simulation test apparatus of variable heat sink space of claim 1, 2 or 3, wherein:
and a radiation-proof screen is arranged on the surface of one side of the end heat sink (5) far away from the carrying trolley (2).
5. The vacuum environment simulation test equipment of the variable heat sink space of claim 4, wherein:
the number of the cylindrical heat sinks (6) is 4-8 along the axial direction of the cylinder body (101).
6. The vacuum environment simulation test equipment of the variable heat sink space of claim 5, wherein:
first guide rail (3) and second guide rail (7) all include two guide rails that are parallel to each other, and two tip of every guide rail all are equipped with limit structure.
7. The vacuum environment simulation test equipment of the variable heat sink space of claim 6, wherein:
the first guide rail (3), the second guide rail (7), the cylinder body (101) and the moving support (10) are all made of stainless steel.
8. A vacuum environment simulation test method of a variable heat sink space is characterized in that: a vacuum environment simulation test apparatus using the variable heat sink space of any one of claims 1 to 7, comprising the steps of:
1) a product (12) to be tested and an infrared heat flow simulator (11) are arranged on a carrying trolley (2);
2) moving the carrying trolley (2) to a position close to a gate (102) of the vacuum environment simulation test equipment in the variable heat sink space;
3) moving the end heat sink (5) to a position close to the product (12) to be tested and then locking;
4) vacuumizing the interior of the vacuum container (1);
5) opening a nitrogen inlet valve V, and continuously introducing liquid nitrogen into a gate heat sink (4), an end heat sink (5) and an effective cylinder heat sink (6) around a product to be tested (12); the effective cylindrical heat sink (6) is a cylindrical heat sink (6) which is enclosed into a space enclosed by the heat sinks;
6) an infrared heat flow simulator (11) is used for controlling the temperature of the product (12) to be tested.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116184091A (en) * | 2023-03-09 | 2023-05-30 | 重庆大学 | Movable heat sink device, thermal vacuum test equipment and test method |
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| US6625991B1 (en) * | 2002-07-10 | 2003-09-30 | Delta T, Llc | Space saving food chiller |
| JP2011189894A (en) * | 2010-03-16 | 2011-09-29 | Hitachi Plant Technologies Ltd | Vacuum environmental testing apparatus |
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