CN110758781A - Thermal vacuum equipment with condensable volatile pollutant absorption function and use method - Google Patents
Thermal vacuum equipment with condensable volatile pollutant absorption function and use method Download PDFInfo
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- CN110758781A CN110758781A CN201911101877.9A CN201911101877A CN110758781A CN 110758781 A CN110758781 A CN 110758781A CN 201911101877 A CN201911101877 A CN 201911101877A CN 110758781 A CN110758781 A CN 110758781A
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- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
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Abstract
The invention provides thermal vacuum equipment with a condensable volatile pollutant absorption function, which comprises a vacuum tank body and a condensable volatile pollutant absorption control device, wherein the condensable volatile pollutant absorption control device comprises a low-temperature pollution absorption screen, a movable support, a shutter baffle plate, a radiation protection screen and an absorption screen temperature control system, the low-temperature pollution absorption screen and the radiation protection screen are arranged on the movable support, the radiation protection screen is positioned on one side of the low-temperature pollution absorption screen, which is back to a product, the shutter baffle plate is arranged on one side of the low-temperature pollution absorption screen, which is right opposite to the product, the shutter baffle plate is fixed with the movable support, the movable support is arranged in the vacuum tank body through an in-tank guide rail, and the low-temperature pollution absorption screen is connected with the absorption screen temperature. The invention has reasonable thermal design and wide applicability, and effectively reduces the influence of background temperature on the surface temperature stability of the low-temperature adsorption screen.
Description
Technical Field
The invention relates to the technical field of spacecraft environment simulation equipment, in particular to thermal vacuum equipment with a condensable volatile pollutant absorption function and a using method thereof.
Background
Any contaminant deposition on the spacecraft subsystem will alter the performance of the system to some extent. In the processes of development, assembly, test, storage, transportation and the like of the spacecraft, the spacecraft is polluted by the external environment and the spacecraft. During a thermal vacuum test, the nonmetal outer skin, the adhesive, the thermal control coating, the filler and the like of the cable used on the spacecraft are deflated due to diffusion and desorption, so that quality loss is generated, and a part of the nonmetal outer skin, the adhesive, the thermal control coating, the filler and the like are re-condensed on a relatively cold surface, pollute the spacecraft equipment and influence the product performance.
Further test results indicate that typical condensable volatiles are phthalates, which may be derived from the plasticizers used for the various cable sheaths, and siloxanes derived from thermally conductive silicone, silicone rubber and in-satellite thermal whitening paints. The sources of pollutants are all materials which are applied to a large number of spacecrafts and are difficult to replace, so that corresponding anti-pollution measures must be taken under the condition that the pollution sources cannot be eliminated, a set of pollution absorption control device is researched and developed, the existing functions of thermal vacuum equipment are not influenced, and the pollution of the spacecraft products in the thermal vacuum test process is reduced.
Through the search of the prior art, the invention patent with application publication number CN108216694A discloses a multi-equipment thermal vacuum test device, which comprises a heat-conducting plate and a plurality of equipment, wherein the equipment is arranged on the heat-conducting plate through a fixing part, and a heat-conducting filler is filled between an equipment mounting surface and the heat-conducting plate; the heat conducting plate is a high heat conducting plate, the thickness of the heat conducting plate is 1.5-5cm, the surface flatness is less than or equal to 0.2mm/100mm, and the surface roughness is less than or equal to 3.2 mu m; the surface flatness of the equipment installation surface of the plurality of equipment is less than or equal to 0.2mm/100mm, and the surface roughness is less than or equal to 3.2 mu m. The device enables the actual examination temperature to achieve good consistency when different devices are tested simultaneously, but the pollution to the spacecraft product in the thermal vacuum test process cannot be effectively controlled.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide thermal vacuum equipment with a condensable volatile pollutant absorption function and a using method thereof.
The invention provides thermal vacuum equipment with a condensable volatile pollutant absorption function, which comprises a vacuum tank body and a condensable volatile pollutant absorption control device, wherein the condensable volatile pollutant absorption control device comprises a low-temperature pollution absorption screen, a movable support, a shutter baffle plate, a radiation protection screen and an absorption screen temperature control system, the low-temperature pollution absorption screen and the radiation protection screen are arranged on the movable support, the radiation protection screen is positioned on one side of the low-temperature pollution absorption screen, which is back to a product, the shutter baffle plate is arranged on the side, which is right opposite to the product, of the low-temperature pollution absorption screen, the shutter baffle plate is fixed with the movable support, the movable support is arranged in the vacuum tank body through an in-tank guide rail, and the low-temperature pollution absorption screen is connected with the absorption screen temperature control system outside the vacuum tank body through a.
Furthermore, the movable support comprises two L-shaped sliding frames which are oppositely arranged, two connecting plates are arranged between the two L-shaped sliding frames from top to bottom, and two L-shaped fixing pieces are arranged on each connecting plate and used for being connected with the shutter shielding plate.
Further, shutter baffle includes installing support and a plurality of separation blade, the installing support includes two vertical parallel arrangement's separation blade frame, one side of separation blade frame is from last to being equipped with a plurality of tilt up's parallel groove of keeping off down, the separation blade is fixed in the groove that keeps off that two separation blade frames correspond, and the opposite side of two separation blade frames passes through the fixed plate and connects, the both ends of fixed plate are equipped with the couple, be equipped with the couple through-hole on the low temperature pollution adsorption screen, the couple passes the couple through-hole and is connected with the L shape stationary blade on the movable support.
Further, adsorb screen temperature control system includes temperature acquisition module, temperature control module, control by temperature change execution module, operating system, the temperature acquisition module conveys the actual temperature on low temperature pollution adsorption screen surface to the temperature control module in real time, and the user is in after having set for the required operating temperature of low temperature pollution adsorption screen on operating system's the interface, the deviation of actual temperature and user's settlement temperature that the temperature control module was passed back in real time according to the temperature acquisition module is sent the action command to control by temperature change execution module, realizes the temperature control on low temperature pollution adsorption screen surface.
Furthermore, a refrigerant flow channel is arranged in the low-temperature pollution adsorption screen or on the back of the low-temperature pollution adsorption screen, low temperature below 170 ℃ is obtained through refrigerant, and activated carbon or other adsorbents are stuck to the front of the low-temperature pollution adsorption screen and used for adsorbing condensable volatile matters.
Further, the radiation protection screen is divided into a circular bottom surface and a side edge arranged along the periphery of the bottom surface, the side edge is perpendicular to the bottom surface, a notch is formed in the side edge and used for fixing the movable support, a heating device is arranged on the circular bottom surface and used for heating the low-temperature pollution adsorption screen to a temperature higher than +100 ℃, and the heating device is an armored heating wire, an infrared lamp or other heating structures.
Further, the flange assembly comprises a refrigerant cabin penetrating flange assembly and a vacuum container flange which are hermetically mounted with each other, the vacuum container flange is arranged on the side wall of the vacuum tank body, the low-temperature pollution adsorption screen is connected to the inner side of the refrigerant cabin penetrating flange assembly through a stainless steel metal hose in the tank, and the adsorption screen temperature control system is connected to the outer side of the refrigerant cabin penetrating flange assembly through a metal pipeline outside the tank.
Furthermore, the refrigerant cabin-penetrating flange assembly is of a detachable structure and is connected with the vacuum container flange through an O-shaped rubber ring, a copper sealing ring or other vacuum sealing modes.
Further, the metal pipeline outside the tank is a copper pipe, a stainless steel hard pipe or a stainless steel hose and other material pipelines.
The invention also provides a using method of the thermal vacuum equipment with the function of absorbing condensable volatile pollutants, the product is placed in the vacuum tank, the low-temperature pollution adsorption screen is moved to a proper position along the guide rail in the tank according to the requirement, after the vacuum condition meets the requirement, the absorption control of the condensable volatile matters is carried out according to the requirement, a corresponding working mode is set on the operation interface of the adsorption screen temperature control system, and the adsorption screen temperature control system can automatically control the temperature of the surface of the low-temperature pollution adsorption screen according to the set working mode.
Compared with the prior art, the invention has the following beneficial effects:
1. the thermal vacuum equipment with the function of absorbing condensable volatile pollutants has reasonable thermal design, fully considers the influence of the background temperature on the temperature control stability of the low-temperature adsorption screen, can effectively reduce the influence of the background temperature on the surface temperature stability of the low-temperature adsorption screen by means of arranging the radiation-proof screen, the shutter baffle and the like, and realizes stable temperature control between minus 170 ℃ and plus 100 ℃.
2. The thermal vacuum equipment with the function of absorbing condensable volatile pollutants has wide applicability, and the absorption control device of the condensable volatile pollutants can be used as a part (a gate or a seal head) of a heat sink, can also be used as an independent part to be arranged in the thermal vacuum equipment, can realize refrigeration and heating by adopting a refrigeration and heating integrated unit, and can realize refrigeration and heating in a mode of a refrigerator (liquid nitrogen) + a heater.
3. The hot vacuum equipment with the condensable volatile pollutant absorption function is convenient and fast to maintain, the refrigerant cabin-penetrating flange assembly is of a detachable structure, the disassembly, the movement and the subsequent maintenance of the equipment are facilitated, the labor and the time cost are saved, and a user can select whether to remove the equipment according to the needs.
4. The thermal vacuum equipment with the condensable volatile pollutant absorption function has diversified temperature control functions, can continuously maintain stable low temperature when condensable volatile matters are required to be controlled, can be set into a product working mode when other tests which do not need pollution are carried out, and can be heated or cooled according to the temperature control requirements of products. And a control system (PLC) adopts PID automatic regulation, can perform closed-loop control and realizes accurate temperature control.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a condensable volatile contaminant absorption control device according to the present invention;
FIG. 3 is an exploded view of the condensable volatile contaminant absorption control device of the present invention;
FIG. 4 is a schematic view of the structure of the low temperature contamination adsorption screen of the present invention;
FIG. 5 is a schematic diagram of the movable support of the present invention;
FIG. 6 is a schematic view of the shutter according to the present invention;
FIG. 7 is a schematic structural view of a radiation shield according to the present invention;
FIG. 8 is a cross-sectional view of the removable refrigerant cross-hatch flange assembly of the present invention;
FIG. 9 is a front view of the removable refrigerant cross-hatch flange assembly of the present invention;
FIG. 10 is a block diagram of a temperature control system for an adsorption screen according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 10, the thermal vacuum equipment with condensable volatile pollutant absorption function provided by the invention comprises a vacuum tank body 6 and a condensable volatile pollutant absorption control device, wherein the condensable volatile pollutant absorption control device comprises a low-temperature pollution absorption screen 1, a movable bracket 2, a shutter baffle plate 3, a radiation protection screen 4 and an absorption screen temperature control system 5, the low-temperature pollution absorption screen 1 and the radiation protection screen 4 are installed on the movable bracket 2, the movable bracket 2 is installed in the vacuum tank body 6 through an in-tank guide rail 7 and can be moved to any position along the in-tank guide rail 7, and the distance between the movable bracket 1 and a product to be tested can be adjusted according to process requirements.
The movable support 2 comprises two L-shaped sliding frames 21 which are arranged oppositely, two connecting plates 22 are arranged between the two L-shaped sliding frames 21 up and down, and each connecting plate is provided with two L-shaped fixing pieces 23 for connecting the shutter shielding plates 3.
The radiation protection screen 4 is divided into a circular bottom surface 41 and a side edge 42 arranged along the periphery of the bottom surface, the side edge 42 is perpendicular to the bottom surface 41, a notch 422 is arranged on the side edge 42 and used for fixing the movable support, and a heating device 12 is arranged on the circular bottom surface 41 and used for heating the low-temperature pollution adsorption screen 1 to the temperature of more than +100 ℃. The heating device 12 is an sheathed heating wire, an infrared lamp, or other heating structure. The radiation protection screen 4 is positioned on one surface of the low-temperature pollution adsorption screen 1, which faces away from the product, and the side edge 42 is just attached to the outer edge of the low-temperature pollution adsorption screen.
The low-temperature pollution adsorption screen 1 is just opposite to one side of a product and is provided with a shutter baffle 3, and the shutter baffle 3 is fixed with the movable support 2. Shutter baffle 3 includes installing support 31 and a plurality of separation blade 32, installing support 31 includes two vertical parallel arrangement's separation blade frame 311, one side of separation blade frame 311 is from last to being equipped with the parallel groove of keeping off of a plurality of tilt up down, separation blade 32 is fixed in the groove that keeps off that two separation blade frames 311 correspond, the opposite side of two separation blade frames 311 passes through fixed plate 33 and connects, the both ends of fixed plate 33 are equipped with couple 34, be equipped with couple through-hole 101 on the low temperature pollution adsorption screen 1, couple 34 passes couple through-hole 101 and is connected with L shape stationary blade 23 on the movable support 2.
The low-temperature pollution adsorption screen 1 is connected with an adsorption screen temperature control system 5 outside the vacuum tank body through a flange assembly. The flange assembly comprises a refrigerant penetrating flange assembly 8 and a vacuum container flange 9 which are hermetically arranged, and the refrigerant penetrating flange assembly 9 is of a detachable structure and is connected with the vacuum container flange 9 through an O-shaped rubber ring, a copper sealing ring or other vacuum sealing modes. The vacuum container flange 9 is arranged on the side wall of the vacuum tank body 6, the low-temperature pollution adsorption screen 1 is connected to the inner side of the refrigerant cabin penetrating flange assembly 8 through a stainless steel metal hose 10 in the tank, and the adsorption screen temperature control system 5 is connected to the outer side of the refrigerant cabin penetrating flange assembly 8 through a metal pipeline 11 outside the tank. The metal pipeline 11 outside the tank is a copper pipe, a stainless steel hard pipe or a stainless steel hose and other material pipelines.
The refrigerant flow channel 102 is arranged inside or on the back of the low-temperature pollution adsorption screen 1, the low temperature of-120 ℃ can be obtained through liquid nitrogen, refrigerants, heat-conducting silicon oil or other refrigerants, and the front of the low-temperature pollution adsorption screen 1 is adhered with activated carbon or other adsorbents for adsorbing condensable volatile matters.
Adsorption screen temperature control system 5 includes temperature acquisition module, temperature control module, control by temperature change execution module, operating system, the temperature acquisition module conveys the actual temperature on low temperature pollution adsorption screen surface to the temperature control module in real time, and the user is in after setting for the required operating temperature of low temperature pollution adsorption screen on operating system's the interface, the deviation of actual temperature and user's settlement temperature that the temperature control module was passed back in real time according to the temperature acquisition module is sent the action command to control by temperature change execution module, realizes the temperature control on low temperature pollution adsorption screen surface.
The adsorption screen temperature control system 5 can realize the continuous temperature control of the low-temperature pollution adsorption screen 1 between-170 ℃ and +100 ℃, and can keep continuous low temperature when a test with condensable volatile pollutants is carried out, thereby ensuring the absorption control of the pollutants; when other thermal vacuum tests are carried out or volatile pollutants can be condensed, the temperature value can be flexibly adjusted according to the temperature control requirement of the product.
According to the application method of the thermal vacuum equipment with the function of absorbing the condensable volatile pollutants, after the product is placed in the vacuum tank, the low-temperature pollution adsorption screen is moved to a proper position along the guide rail in the tank according to needs, after the vacuum condition meets the requirements, the absorption control of the condensable volatile matters is carried out according to the needs, a corresponding working mode is set on the operation interface of the adsorption screen temperature control system, and the adsorption screen temperature control system can automatically control the temperature of the surface of the low-temperature pollution adsorption screen according to the set working mode.
The thermal vacuum test equipment with the function of controlling the absorption of condensable volatile pollutants has diversified working modes, wide temperature control range and wide applicability, and solves the problem of controlling the pollution of the condensable volatile matters.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a hot vacuum apparatus with can congeal volatile pollutant absorption function, a serial communication port, including the vacuum tank body with can congeal volatile pollutant absorption controlling means, can congeal volatile pollutant absorption controlling means includes that low temperature pollutes and adsorbs screen, portable support, shutter shielding plate, radiation protection screen and adsorb screen temperature control system, low temperature pollutes and adsorbs the screen and install on portable support with the radiation protection screen, the radiation protection screen is located low temperature pollution and adsorbs the one side that the screen is back to the product, low temperature pollution adsorbs the screen and just sets up shutter baffle to the product one side, shutter baffle with portable support is fixed, portable support passes through the jar interior guide rail and installs at the vacuum tank internally, low temperature pollution adsorbs the screen and passes through the outer absorption screen temperature control system of flange unit connection vacuum tank.
2. The thermal vacuum apparatus for absorbing condensable volatile contaminants as claimed in claim 1, wherein the movable frame comprises two L-shaped sliding frames disposed oppositely, two connecting plates disposed up and down between the two L-shaped sliding frames, and two L-shaped fixing pieces disposed on each connecting plate for connecting the shutter.
3. The thermal vacuum equipment with function of absorbing condensable volatile pollutants as claimed in claim 2, wherein the shutter baffle comprises a mounting bracket and a plurality of baffle plates, the mounting bracket comprises two vertical parallel baffle frames, one side of the baffle frame is provided with a plurality of upward inclined parallel baffle grooves from top to bottom, the baffle plates are fixed in the baffle grooves corresponding to the two baffle frames, the other sides of the two baffle frames are connected through a fixing plate, hooks are arranged at two ends of the fixing plate, hook through holes are arranged on the low-temperature pollution adsorption screen, and the hooks pass through the hook through holes and are connected with L-shaped fixing plates on the movable bracket.
4. The thermal vacuum apparatus with function of absorbing condensable volatile contaminants according to claim 1, wherein the adsorption screen temperature control system comprises a temperature acquisition module, a temperature control execution module, and an operating system, the temperature acquisition module transmits the actual temperature on the surface of the low-temperature pollution adsorption screen to the temperature control module in real time, and after the user sets the required working temperature of the low-temperature pollution adsorption screen on the interface of the operating system, the temperature control module transmits the action command to the temperature control execution module according to the deviation between the actual temperature returned by the temperature acquisition module in real time and the temperature set by the user, so as to control the temperature on the surface of the low-temperature pollution adsorption screen.
5. The thermal vacuum apparatus with function of absorbing condensable volatile contaminants as claimed in claim 1, wherein the low temperature pollution adsorption panel is provided with a coolant channel inside or at the back thereof, the temperature of the low temperature pollution adsorption panel is lower than-170 ℃ by coolant, and activated carbon or other adsorbents are adhered to the front surface of the low temperature pollution adsorption panel for adsorbing condensable volatile substances.
6. The thermal vacuum apparatus with the function of absorbing condensable volatile contaminants as claimed in claim 1, wherein the radiation-proof screen is divided into a circular bottom surface and a side edge arranged along the periphery of the bottom surface, the side edge is perpendicular to the bottom surface, the side edge is provided with a notch for fixing the movable support, the circular bottom surface is provided with a heating device for heating the low-temperature contamination absorption screen to +100 ℃ or higher, and the heating device is an armored heating wire, an infrared lamp or other heating structure.
7. The thermal vacuum apparatus having a condensable volatile contaminant absorbing function according to claim 1, wherein the flange assembly comprises a refrigerant cross-cabin flange assembly and a vacuum vessel flange which are hermetically mounted to each other, the vacuum vessel flange is disposed on a sidewall of the vacuum vessel body, the low-temperature contamination adsorption screen is connected to an inner side of the refrigerant cross-cabin flange assembly through a stainless steel hose inside the vacuum vessel body, and the adsorption screen temperature control system is connected to an outer side of the refrigerant cross-cabin flange assembly through a metal pipeline outside the vacuum vessel body.
8. The apparatus according to claim 7, wherein the refrigerant penetration flange assembly is a detachable structure and is connected to the vacuum vessel flange by an O-ring, a copper seal ring or other vacuum sealing means.
9. The thermal vacuum apparatus having a function of absorbing condensable volatile contaminants as claimed in claim 7, wherein the metal pipeline outside the tank is a copper pipe, a stainless steel hard pipe or a stainless steel hose and a pipeline made of other materials.
10. The utility model provides a hot vacuum apparatus's application method with can congeal volatile pollutant absorption function, its characterized in that, place the product in the vacuum tank after, adsorb the screen with low temperature pollution as required and remove to suitable position along jar interior guide rail, treat that the vacuum condition satisfies the back, according to whether need carry out congeal volatile matter absorption control, set up corresponding mode at adsorption screen temperature control system operation interface, adsorption screen temperature control system can be according to the temperature on the surperficial low temperature pollution adsorption screen of mode automatic control that sets up.
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| CN110758781B (en) | 2021-05-11 |
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