CN113443177B - Ground supporting structure for high-low temperature environment simulation test system - Google Patents
Ground supporting structure for high-low temperature environment simulation test system Download PDFInfo
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- CN113443177B CN113443177B CN202110552126.XA CN202110552126A CN113443177B CN 113443177 B CN113443177 B CN 113443177B CN 202110552126 A CN202110552126 A CN 202110552126A CN 113443177 B CN113443177 B CN 113443177B
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000004088 simulation Methods 0.000 title claims abstract description 23
- 229910001374 Invar Inorganic materials 0.000 claims abstract description 108
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 239000010935 stainless steel Substances 0.000 claims abstract description 37
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 37
- 238000005338 heat storage Methods 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 23
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 14
- 239000010962 carbon steel Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000011449 brick Substances 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 12
- 239000011083 cement mortar Substances 0.000 claims abstract description 11
- 241000353135 Psenopsis anomala Species 0.000 claims abstract description 10
- 239000010425 asbestos Substances 0.000 claims abstract description 10
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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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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- Aviation & Aerospace Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a ground support structure for a high-low temperature environment simulation test system, which comprises a bottom heat storage structure, an invar bottom support structure, a heat preservation structure and an invar non-deforming platform; the supporting structure is divided into four layers from bottom to top, and sequentially comprises a bottom heat storage structure, an invar steel bottom supporting structure, a heat preservation structure and an invar steel non-deforming platform; the bottom heat storage structure comprises a foundation pit waterproof coating, a melon seed heat storage layer and a cement mortar leveling layer; the invar steel bottom supporting structure comprises a bottom embedded steel plate, invar steel rib plates, invar steel pipes, a stainless steel sealing plate at the bottom of the box body, stainless steel corrugated pipes, invar steel grid rib plates, invar steel mounting flanges, stainless steel bottom plates and a carbon steel I-shaped steel frame; the heat insulation structure comprises heat insulation glass bricks, a pressure bearing steel plate and an asbestos plate; the invar steel non-deforming platform comprises a non-deforming platform and a connecting bolt. The whole supporting structure has strong bearing capacity and high and low temperature resistance, and has good stability, deformation resistance and safety.
Description
Technical Field
The invention relates to the field of anti-deformation ground supporting structures, in particular to a ground supporting structure for a high and low temperature environment simulation test system.
Background
With the rapid development of modern science and technology, environmental tests become an indispensable part in research in many subject fields. In the field of aerospace, a newly developed spacecraft is usually subjected to various environmental simulation tests on the ground before being put into use, particularly high and low temperature environmental simulation tests. Through the ground test, the rationality of the design of the mechanical structure of the spacecraft, the performance of materials in different thermal environments, and the defects and hidden dangers in other designs can be solved before launching, and the reliability of equipment can be improved.
Because the spacecraft is mostly large-size, big quality structure, and this type of high low temperature environment simulation test is higher to measurement accuracy, system security, stability requirement, consequently be used for this type of high low temperature environment simulation test's test system, need system ground when possessing enough holding power, have less deformation volume to and great steady power, and can guarantee the temperature stability of test system inside, have concurrently and bear and keep warm the effect, satisfy experimental requirement.
Therefore, those skilled in the art have been devoted to developing a new ground support structure for a high and low temperature environment simulation test system.
Disclosure of Invention
In view of the above defects of the prior art, the technical problems to be solved by the invention are that the bearing capacity of the ground support structure is insufficient, the absolute deformation is large, the local flatness is poor, and the like.
In order to achieve the purpose, the invention provides a ground support structure for a high-low temperature environment simulation test system, which comprises a bottom heat storage structure, an invar bottom surface support structure, a heat preservation structure and an invar non-deforming platform; the supporting structure is divided into four layers from bottom to top, and sequentially comprises the bottom heat storage structure, the invar steel bottom supporting structure, the heat preservation structure and the invar steel non-deforming platform; the bottom heat storage structure comprises a foundation pit waterproof coating, a melon seed heat storage layer and a cement mortar leveling layer; the bottom heat storage structure is divided into three layers from bottom to top, and sequentially comprises the foundation pit waterproof coating, the melon seed slice heat storage layer and the cement mortar leveling layer; the invar steel bottom supporting structure comprises a bottom embedded steel plate, invar steel rib plates, invar steel pipes, a box bottom stainless steel sealing plate, stainless steel corrugated pipes, invar steel grid rib plates, invar steel mounting flanges, stainless steel bottom plates and a carbon steel I-shaped steel frame; the heat insulation structure comprises heat insulation glass bricks, a pressure bearing steel plate and an asbestos plate; the heat insulation structure is divided into three layers from bottom to top, and the heat insulation glass brick, the pressure bearing steel plate and the asbestos plate are sequentially arranged; the invar steel non-deformation platform comprises a non-deformation platform and a connecting bolt.
Furthermore, the bottom embedded steel plate is paved on the lowest surface of the invar bottom surface supporting structure to bear the load of the whole supporting structure.
Further, the bottom embedded steel plate is paved on a bottom foundation platform.
Furthermore, the invar steel rib plates, the invar steel pipes, the invar steel grid rib plates, the stainless steel bottom plate, the carbon steel I-shaped steel frame and the invar steel mounting flange are welded and fixed.
Further, the stainless steel corrugated pipe is connected with the invar steel pipe and the stainless steel sealing plate at the bottom of the box body in a welding mode.
And further, adjusting and compacting the carbon steel I-steel frame and the bottom embedded steel plate by adopting a base plate, and then welding and connecting.
Further, the invar steel mounting flange is connected with the non-deforming platform through the connecting bolts.
Furthermore, the diameter of the invar tube is 76mm, the length is 1500mm, and the wall thickness is 4 mm.
Further, there are 14 invar tubes, wherein, 1 sets up in the center, and 9 are 3 x 3 rectangle range distribution, and two liang of interval 850mm, and the remaining 4 are 2 x 2 rectangle range distribution, and two liang of interval 850 mm.
Furthermore, the cement mortar leveling layer is a mortar leveling structure with a thickness of 50 mm.
Furthermore, the invar steel rib plates, the invar steel pipes and the invar steel grid rib plates are welded and connected to form an invar steel fixing pile;
further, a stainless steel sealing plate at the bottom of the box body is flatly paved on the asbestos plate.
The bottom heat storage structure has the technical effects that on one hand, the waterproofness and the moisture resistance of the whole bottom surface supporting structure are guaranteed, on the other hand, the heat storage and the cold storage are realized through the melon seed piece heat storage layer, and the influence of the external environment on the high-low temperature environment simulation test system is isolated.
The invar steel bottom supporting structure comprises invar steel rib plates, invar steel pipes and invar steel grid rib plates which are welded and connected to form an invar steel fixing pile. Each invar steel pipe spud pile welded fastening adopts the backing plate to adjust and fills up welded connection behind real steel I-steel frame and the pre-buried steel sheet in bottom on stainless steel bottom plate and the carbon steel I-steel frame, can prevent on the one hand that the invar steel pipe atress from producing circumferential motion, and on the other hand has guaranteed the intensity of junction, makes the vertical and horizontal anti-deformation intensity of invar steel pipe promote. In addition, through setting up the invar steel spud pile, promoted bottom surface bearing capacity and stability of bearing structure.
According to the invar steel bottom supporting structure, the invar steel pipes are fixedly welded with the stainless steel sealing plate at the bottom of the box body through the stainless steel corrugated pipe, so that on one hand, cold and hot deformation on the structure can be compensated through the stainless steel corrugated pipe, and on the other hand, axial, transverse and angular displacement of the stainless steel sealing plate at the bottom of the box body and other internal structures of the box body, which are generated due to stress, can be compensated, so that the absolute deformation of the whole supporting structure is small, and the local flatness of the invar steel non-deformation platform is relatively high.
According to the heat insulation structure, the heat insulation glass brick can ensure that the test system is isolated from the external environment in temperature, so that the heat leakage is reduced, and the long-term stable heat insulation index in the test system is realized; the pressure-bearing steel plate is laid on the heat-insulating glass brick, so that other supporting structures at the bottom of the structure can bear the load uniformly, and the working stability and safety of the system are improved.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a partial schematic view of a ground support structure for a high and low temperature environment simulation test system according to a preferred embodiment of the present invention;
FIG. 2 is a three-dimensional view of a ground support structure for a high and low temperature environment simulation test system according to a preferred embodiment of the present invention;
the heat-insulation building block comprises, by weight, 1-a bottom heat-storage structure, 2-an invar steel bottom surface supporting structure, 3-a heat-insulation structure, 4-an invar steel non-deformation platform, 5-a bottom foundation platform, 6-a ground plane, 11-a foundation pit waterproof coating, 12-a melon seed slice heat-storage layer, 13-a cement mortar leveling layer, 21-a bottom embedded steel plate, 22-an invar steel rib plate, 23-an invar steel pipe, 24-a box bottom stainless steel sealing plate, 25-a stainless steel corrugated pipe, 26-an invar steel grid rib plate, 27-an invar steel mounting flange, 28-a stainless steel bottom plate, 29-a carbon steel I-shaped steel frame, 31-heat-insulation glass bricks, 32-a pressure-bearing steel plate, 33-an asbestos plate, 41-an invar platform and 42-a connecting bolt.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be made clear and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, elements that are structurally identical are represented by like reference numerals, and elements that are structurally or functionally similar in each instance are represented by like reference numerals. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components has been exaggerated in some places in the drawings where appropriate for clarity of illustration.
As shown in fig. 1 and fig. 2, a ground support structure for a high and low temperature environment simulation test system includes a bottom heat storage structure 1, an invar bottom surface support structure 2, a heat preservation structure 3, and an invar non-deformable platform 4. The supporting structure is divided into four layers from bottom to top, and sequentially comprises a bottom heat storage structure 1, an invar steel bottom supporting structure 2, a heat preservation structure 3 and an invar steel non-deformation platform 4. Bottom heat accumulation structure 1 includes foundation ditch waterproof coating 11, melon seed piece heat accumulation layer 12 and cement mortar screed-coat 13, and bottom heat accumulation structure 1 divides the three-layer from bottom to top, is foundation ditch waterproof coating 11, melon seed piece heat accumulation layer 12 and cement mortar screed-coat 13 in proper order, and cement mortar screed-coat 13 is the thick mortar of one deck 50mm structure of making level. The invar steel bottom supporting structure 2 comprises a bottom embedded steel plate 21, invar steel rib plates 22, invar steel pipes 23, a box bottom stainless steel sealing plate 24, a stainless steel corrugated pipe 25, invar steel grid rib plates 26, invar steel mounting flanges 27, a stainless steel bottom plate 28 and a carbon steel I-shaped steel frame 29. The heat insulation structure 3 comprises heat insulation glass bricks 31, pressure bearing steel plates 32 and asbestos plates 33, and the heat insulation structure 3 is divided into three layers from bottom to top, namely the heat insulation glass bricks 31, the pressure bearing steel plates 32 and the asbestos plates 33 in sequence. The invar non-deformable platform 4 comprises a non-deformable platform 41 and a connecting bolt 42. The invar steel non-deformable platform 4 is below the ground plane 6.
The bottom embedded steel plate 21 is laid on the lowest surface of the invar bottom surface supporting structure 2 to bear the load of the whole supporting structure. The bottom embedded steel plate 21 is laid on the bottom foundation platform 5.
Invar steel ribbed plate 22, invar steel pipe 23, invar steel grid ribbed plate 26, stainless steel bottom plate 28, carbon steel I-steel frame 29 and invar steel mounting flange 27 are welded and fixed. The stainless steel corrugated pipe 25 is connected with the invar steel pipe 23 and the stainless steel sealing plate 24 at the bottom of the box body in a welding mode, and the stainless steel corrugated pipe 25 plays a role in compensating cold and hot deformation and reducing size variables. The carbon steel I-steel frame 29 and the bottom embedded steel plate 21 are adjusted and tamped by a backing plate and then are welded and connected. The stainless steel sealing plate 24 at the bottom of the box body is flatly laid on the asbestos plate 33. The invar mounting flange 27 is connected to the non-deformable platform 41 with connecting bolts 42.
The invar tube 23 has a diameter of 76mm, a length of 1500mm and a wall thickness of 4 mm. The invar tubes 23 have 14, wherein, 1 is arranged in the center, 9 are arranged and distributed in a 3 × 3 rectangular manner, the distance between every two is 850mm, the other 4 are arranged and distributed in a 2 × 2 rectangular manner, the distance between every two is 850mm, the invar tubes 23 in the 2 × 2 rectangular manner are uniformly distributed by taking the invar tubes 23 in the center as the center, the invar tubes 23 in the 3 × 3 rectangular manner are uniformly distributed by taking the invar tubes 23 in the center as the center, and the 2 × 2 rectangular manner is sleeved in the 3 × 3 rectangular manner.
The bottom heat storage structure 1 ensures the waterproofness and the moisture resistance of the whole bottom surface supporting structure, and realizes heat storage and cold storage through the melon seed piece heat storage layer 12 to isolate the influence of the external environment on a high-low temperature environment simulation test system.
The invar steel bottom supporting structure 2, the invar steel rib plates 22, the invar steel tubes 23 and the invar steel grid rib plates 26 are welded and connected to form an invar steel fixing pile. Each invar steel pipe fixing pile is welded and fixed on the stainless steel bottom plate 28 and the carbon steel I-steel frame 29, and the backing plate is adopted to adjust and cushion the welding connection of the carbon steel I-steel frame 29 and the bottom embedded steel plate 21, so that on one hand, the invar steel pipes 23 can be prevented from moving circumferentially under stress, on the other hand, the strength of the connection part is ensured, and the vertical and horizontal deformation resistance strength of the invar steel pipes 23 is improved. In addition, through setting up the invar spud pile, promoted bottom surface bearing capacity and stability of bearing structure.
According to the invar steel bottom supporting structure 2, the invar steel pipe 23 is welded and fixed with the stainless steel sealing plate 24 at the bottom of the box body through the stainless steel corrugated pipe 25, so that on one hand, cold and hot deformation on the structure can be compensated through the stainless steel corrugated pipe 25, and on the other hand, the invar steel bottom supporting structure can be used for compensating axial, transverse and angular displacement of the stainless steel sealing plate 24 at the bottom of the box body and other internal structures of the box body caused by stress, so that the absolute deformation of the whole supporting structure is small, and the local flatness of the invar steel non-deformable platform 4 is relatively high.
According to the heat insulation structure 3, the heat insulation glass bricks 31 can ensure that the test system is isolated from the external environment in temperature, so that heat leakage is reduced, and long-term stable heat insulation indexes in the test system are realized; the pressure-bearing steel plate 32 is laid on the insulating glass brick 31, so that other supporting structures at the bottom of the structure can bear the load uniformly, and the working stability and safety of the system are improved.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A ground support structure for a high-low temperature environment simulation test system is characterized by comprising a bottom heat storage structure, an invar bottom surface support structure, a heat preservation structure and an invar non-deforming platform; wherein,
the bottom heat storage structure, the heat preservation structure and the invar steel non-deforming platform are arranged from bottom to top;
the bottom heat storage structure comprises a foundation pit waterproof coating, a melon seed heat storage layer and a cement mortar leveling layer;
the bottom heat storage structure is divided into three layers from bottom to top, and sequentially comprises the foundation pit waterproof coating, the melon seed slice heat storage layer and the cement mortar leveling layer;
the invar steel bottom supporting structure comprises a bottom embedded steel plate, invar steel rib plates, invar steel pipes, a box bottom stainless steel sealing plate, stainless steel corrugated pipes, invar steel grid rib plates, invar steel mounting flanges, stainless steel bottom plates and a carbon steel I-shaped steel frame;
the heat insulation structure comprises heat insulation glass bricks, pressure bearing steel plates and asbestos plates;
the heat insulation structure is divided into three layers from bottom to top, and sequentially comprises the heat insulation glass brick, the pressure bearing steel plate and the asbestos plate;
the invar steel non-deforming platform comprises a non-deforming platform and a connecting bolt;
the embedded steel sheet of bottom is tiled on bottom basis platform, invar steel mounting flange passes through connecting bolt with the invar steel platform that does not warp is connected.
2. The ground support structure for the high and low temperature environment simulation test system as claimed in claim 1, wherein the bottom embedded steel plate is laid on the lowest surface of the invar bottom surface support structure to bear the load of the whole ground support structure.
3. The ground support structure for high and low temperature environment simulation test system of claim 1, wherein the invar steel rib plates, the invar steel tubes, the invar steel grid rib plates, the stainless steel bottom plate, the carbon steel i-steel frame and the invar steel mounting flange are welded and fixed.
4. The ground support structure for the high and low temperature environment simulation test system according to claim 1, wherein the corrugated stainless steel tube is welded to the invar tube and the stainless steel sealing plate at the bottom of the tank.
5. The ground support structure for the high and low temperature environment simulation test system of claim 1, wherein the carbon steel I-steel frame and the bottom embedded steel plate are adjusted and tamped by a backing plate and then welded.
6. The ground support structure for the high and low temperature environment simulation test system of claim 1, wherein the invar tube has a diameter of 76mm, a length of 1500mm and a wall thickness of 4 mm.
7. The ground support structure for a high and low temperature environment simulation test system of claim 1, wherein said invar tubes have 14, of which 1 is centrally installed, 9 are arranged in a 3 x 3 rectangular arrangement with a distance of 850mm therebetween, and the other 4 are arranged in a 2 x 2 rectangular arrangement with a distance of 850mm therebetween.
8. The ground support structure for a high and low temperature environment simulation test system according to claim 1, wherein the cement mortar leveling layer is a 50mm thick mortar leveling structure.
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| CN202110552126.XA CN113443177B (en) | 2021-05-20 | 2021-05-20 | Ground supporting structure for high-low temperature environment simulation test system |
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| CN202110552126.XA CN113443177B (en) | 2021-05-20 | 2021-05-20 | Ground supporting structure for high-low temperature environment simulation test system |
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| CN113443177B true CN113443177B (en) | 2022-07-15 |
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