CN112556974A - Large-scale heat-resisting little flat braced frame structure of multilayer that warp - Google Patents
Large-scale heat-resisting little flat braced frame structure of multilayer that warp Download PDFInfo
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- CN112556974A CN112556974A CN202011440530.XA CN202011440530A CN112556974A CN 112556974 A CN112556974 A CN 112556974A CN 202011440530 A CN202011440530 A CN 202011440530A CN 112556974 A CN112556974 A CN 112556974A
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- frame structure
- rectangular square
- flat plate
- support frame
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
Abstract
The invention provides a large heat-resistant small-deformation multi-layer flat plate type supporting frame structure, wherein two ends of a left beam and a right beam are respectively and fixedly connected with an upper beam and a lower beam through screws II, two ends of a transverse clapboard respectively penetrate through the left beam and the right beam, rectangular square grooves are respectively formed in the front side and the rear side of each of the two ends of the transverse clapboard, the rectangular square grooves are respectively positioned on the outer sides of the left beam and the right beam, a stop block I respectively penetrates through the rectangular square grooves, and two ends of a longitudinal clapboard respectively penetrate through the upper beam and the lower beam; when the environment test of simulating temperature layer junctions is involved, in order to ensure that the temperature gradient generated under the high-temperature large-temperature-difference environment meets the requirement, the support frame formed by the C/C composite material plate is an ideal choice, and by means of the excellent material and mechanical property of the C/C composite material, a multi-layer flat plate type support frame with small deformation, light weight and small air flow influence can be formed through a mechanical structure, so that conditions are created for forming and developing a temperature boundary layer of a test section.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a large-scale heat-resistant small-deformation multilayer flat plate type support frame structure for supporting a large number of heating elements for an environmental wind tunnel.
Background
When the environment test of the simulated temperature stratification is involved, besides the requirement that the heat exchanger arranged on the hole body loop interacts with the test section bottom plate to generate natural convection heat transfer, a certain temperature difference is hopefully formed at the test section inlet along the height direction to help the formation and development of the test section temperature boundary layer. Form certain difference in temperature along the direction of height at the test section entry, need set up a device that can adjust the temperature at the test section entry and be the temperature box, set up multilayer heating element in the temperature box, it is better to see the mode of electric heating piece from present technical development trend, but the rigidity of heating piece self is very poor, need support, bearing structure self weight and temperature variation all can arouse the deformation, adopt light aluminum alloy stainless steel material to weld into frame construction usually, reduce the jam through the trompil mode under the prerequisite of guaranteeing rigidity, nevertheless cause the air current disorder that flows the support, and the affected area is great, be unfavorable for temperature gradient's formation. With the development of material industry, magnesium alloy, titanium alloy, carbon/epoxy composite material and the like appear successively, but because the corrosion resistance of the magnesium alloy is poor and the cost of the titanium alloy is high, the range of engineering application is relatively small, and the carbon/epoxy composite material has serious anisotropy and has moisture absorption which is not suitable for being used in the carbon/epoxy composite material.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects of the prior art, adapt to practical requirements and provide a large-scale heat-resistant small-deformation multilayer flat plate type supporting frame structure so as to solve the problems in the background technology.
(2) Technical scheme
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a large-scale heat-resistant small-deformation multi-layer flat plate type supporting frame structure comprises a left beam, an upper beam, a right beam, a lower beam, a screw II, a stop block I, a transverse partition plate, a reinforcing plate, a pin, a screw IV, a stop block II and a longitudinal partition plate, wherein two ends of the left beam and the right beam are fixedly connected with the upper beam and the lower beam through the screw II respectively, two ends of the transverse partition plate penetrate through the left beam and the right beam respectively, rectangular square grooves are formed in the front side and the rear side of two ends of the transverse partition plate respectively and are positioned on the outer sides of the left beam and the right beam respectively, the stop block I penetrates through the rectangular square grooves respectively, two ends of the longitudinal partition plate penetrate through the upper beam and the lower beam respectively, the longitudinal partition plate is positioned on the outer sides of the upper beam and the lower beam and is provided with a first rectangular square hole respectively, the longitudinal partition plate is positioned on two sides of the outer end of the upper beam and is provided with the reinforcing, the reinforcing plate is connected with the longitudinal partition plate through the three pins, the stop dog II penetrates through the first rectangular square hole and the second rectangular square hole, the two ends of the stop dog II are fixed to the upper beam through the screws IV, the stop dog II penetrating through the first rectangular square hole is arranged on the outer side of the lower beam, and the two sides of the stop dog II are fixed to the lower beam through the screws IV.
Furthermore, reinforcing blocks are arranged at the joint of the left beam and the upper beam, the joint of the upper beam and the right beam, the joint of the right beam and the lower beam and the joint of the lower beam and the left beam.
Furthermore, including left roof beam, upper beam, right beam and underbeam all through screw I and boss fixed connection.
Furthermore, the reinforcing block is arranged in an L shape and covers the outer side of the screw II.
Further, the thickness of the diaphragm and the longitudinal diaphragm in the airflow plane is not more than 5 mm.
Furthermore, the left beam and the right beam are fixedly connected with the stop block I through screws III.
Furthermore, the longitudinal partition plates and the transverse partition plates are provided with grooves at the intersection.
Furthermore, the left beam, the upper beam, the right beam, the lower beam, the reinforcing block, the stop block I, the transverse partition plate, the reinforcing plate, the stop block II and the longitudinal partition plate are all made of C-C composite material plates.
(3) Has the advantages that:
when the environment test of simulating temperature layer junctions is involved, in order to ensure that the temperature gradient generated under the high-temperature large-temperature-difference environment meets the requirement, the support frame formed by the C/C composite material plate is an ideal choice, and by means of the excellent material and mechanical property of the C/C composite material, a multi-layer flat plate type support frame with small deformation, light weight and small air flow influence can be formed through a mechanical structure, so that conditions are created for forming and developing a temperature boundary layer of a test section.
Drawings
FIG. 1 is a schematic structural view of a large heat-resistant small-deformation multi-layer flat plate type supporting frame structure according to the present invention;
FIG. 2 is an enlarged view of area A of the structural schematic view of the large heat-resistant small-deformation-resistant multi-layer flat plate type supporting frame structure of the present invention;
FIG. 3 is a schematic diagram of the structure of the reinforcing plate of the large heat-resistant small-deformation multi-layer flat plate type supporting frame structure of the present invention.
The reference numbers are as follows:
left beam 1, upper beam 2, right beam 3, lower beam 4, screw I5, reinforcing block 6, screw II 7, dog I8, diaphragm plate 9, screw III 10, reinforcing plate 11, pin 12, screw IV 13, dog II 14, vertical partition plate 15.
Detailed Description
The invention will be further illustrated with reference to the following figures 1-3 and examples:
a large-scale heat-resistant small-deformation multilayer flat plate type supporting frame structure comprises a left beam 1, an upper beam 2, a right beam 3, a lower beam 4, a screw II 7, a stop block I8, a transverse partition plate 9, a reinforcing plate 11, a pin 12, a screw IV 13, a stop block II 14 and a longitudinal partition plate 15, wherein in an environmental wind tunnel related to a simulated temperature stratification, 35 layers of electric heating sheets and frames thereof are arranged in a 3m wide x2.4m high-temperature box, and the frames comprise main bearing frames, 35 layers of transverse partition plates and 7 columns of longitudinal partition plates; the two ends of the left beam 1 and the right beam 3 are fixedly connected with the upper beam 2 and the lower beam 4 through screws II 7 respectively to form an integral frame body, the two ends of the diaphragm plate 9 respectively penetrate through the left beam 1 and the right beam 3, the front side and the rear side of the two ends of the diaphragm plate 9 are respectively provided with a rectangular square groove, the rectangular square grooves are respectively positioned at the outer sides of the left beam 1 and the right beam 3, four stoppers I8 respectively penetrate through the rectangular square grooves, the two ends of the longitudinal diaphragm plate 15 respectively penetrate through the upper beam 2 and the lower beam 4, the longitudinal diaphragm plate 15 is positioned at the outer sides of the upper beam 2 and the lower beam 4 and is respectively provided with a first rectangular square hole, the longitudinal diaphragm plate 15 is positioned at the two sides of the outer end of the upper beam 2 and is respectively clamped with a reinforcing plate 11, the reinforcing plate 11 is provided with a second rectangular square hole matched with the first rectangular square hole, the reinforcing plate 11 is connected with the longitudinal diaphragm plate 15 through three column pins 12, and the stopper II 14 penetrates through the first rectangular, two ends of the stop block II 14 are fixed on the upper beam 2 through screws IV 13, so that the weight of the longitudinal partition plate 15 and the weight of the transverse partition plate 9 are mainly applied to the upper beam 2, the stop block II 14 penetrating through the first rectangular square hole is arranged on the outer side of the lower beam 4, and two sides of the stop block II 14 are fixed on the lower beam 4 through the screws IV 13 to play a role in positioning.
In this embodiment, the joint of the left beam 1 and the upper beam 2, the joint of the upper beam 2 and the right beam 3, the joint of the right beam 3 and the lower beam 4, and the joint of the lower beam 4 and the left beam 1 are all provided with reinforcing blocks 6.
In this embodiment, including left roof beam 1, upper beam 2, right beam 3 and underbeam 4 all through screw I5 and boss 6 fixed connection, consolidate through screw I5 and boss 6, form main load frame.
In this embodiment, the reinforcing block 6 is arranged in an L shape, and the reinforcing block 6 covers the outer side of the screw ii 7.
In this embodiment, the number of layers of the diaphragm plate 9 is determined by the number of layers of the electric heating sheets, the number of the longitudinal plates 15 is determined by optimizing the number of the individual electric heating sheet partitions and mechanical analysis, the thickness of the diaphragm plate 9 and the thickness of the longitudinal plates 15 which are located in the airflow plane are not more than 5mm, and the contact surfaces of the stop block I8 and the stop block II 14 with the left beam 1, the upper beam 2, the right beam 3 and the lower beam 4 can be increased according to the assembly requirements to achieve the effects of expanding, bearing and positioning.
In this embodiment, the left beam 1 and the right beam 3 are fixedly connected with the stop block I8 through the screws III 10, so that the diaphragm plate 9 is ensured to be in an expansion state.
In this embodiment, the longitudinal partition plates 15 and the transverse partition plates 9 are provided with grooves at the intersections, so as to ensure that the end surfaces of the supporting frames are flush, and to play a role in supporting the transverse partition plates 9.
In this embodiment, the left beam 1, the upper beam 2, the right beam 3, the lower beam 4, the reinforcing block 6, the stop block i 8, the transverse partition plate 9, the reinforcing plate 11, the stop block ii 14 and the longitudinal partition plate 15 are all made of C-C composite material plates.
And (4) supporting the composite material. The C/C composite material is selected as a supporting material, has low thermal expansion coefficient, small relative density, higher toughness and strength and higher specific strength and specific modulus, and can well meet the use requirements. The support of the heating plate is formed by splicing the C/C composite material plates, and through calculation and analysis, the influence area of the thickness of the C/C composite material plate on the air flow is very small within 5mm, so that the temperature gradient is not influenced. In addition, the connection of the composite material parts is different from the metal parts, mechanical connection, sewing connection, glue joint or the combination of the above connection methods are usually adopted, the selection principle is followed, a special connection mode is invented by combining the structural characteristics, the mechanical connection effect is achieved, and deformation caused by dead weight and temperature change can be reduced or counteracted through tensioning, so that the stable development of the temperature gradient is ensured.
The invention has the beneficial effects that:
in the invention, when an environment test for simulating temperature stratification is carried out, in order to ensure that the temperature gradient generated in a high-temperature and large-temperature-difference environment meets the requirement, the support frame formed by the C/C composite material plate is an ideal choice, and by means of excellent material and mechanical properties of the C/C composite material, a multi-layer flat plate type support frame with small deformation, light weight and small air flow influence can be formed through a mechanical structure, so that conditions are created for forming and developing a temperature boundary layer of a test section.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (8)
1. A large-scale heat-resistant small-deformation multi-layer flat plate type supporting frame structure comprises a left beam, an upper beam, a right beam, a lower beam, a screw II, a stop block I, a transverse partition plate, a reinforcing plate, a pin, a screw IV, a stop block II and a longitudinal partition plate, and is characterized in that two ends of the left beam and the right beam are fixedly connected with the upper beam and the lower beam through the screw II respectively, two ends of the transverse partition plate penetrate through the left beam and the right beam respectively, rectangular square grooves are formed in the front side and the rear side of the two ends of the transverse partition plate respectively and are positioned on the outer sides of the left beam and the right beam respectively, the stop block I penetrates through the rectangular square grooves respectively, two ends of the longitudinal partition plate penetrate through the upper beam and the lower beam respectively, first rectangular square holes are formed in the outer sides of the upper beam and the lower beam respectively, the reinforcing plate is clamped on two sides of the outer end of the upper beam, and is provided with a second rectangular square hole matched with the first rectangular, the reinforcing plate is connected with the longitudinal partition plate through the three pins, the stop dog II penetrates through the first rectangular square hole and the second rectangular square hole, the two ends of the stop dog II are fixed to the upper beam through the screws IV, the stop dog II penetrating through the first rectangular square hole is arranged on the outer side of the lower beam, and the two sides of the stop dog II are fixed to the lower beam through the screws IV.
2. A large scale heat and small deformation resistant multi-layered flat plate type support frame structure according to claim 1, wherein: and reinforcing blocks are arranged at the joint of the left beam and the upper beam, the joint of the upper beam and the right beam, the joint of the right beam and the lower beam and the joint of the lower beam and the left beam.
3. A large scale heat and small deformation resistant multi-layered flat plate type support frame structure according to claim 2, wherein: including left beam, upper beam, right beam and underbeam all through screw I and boss fixed connection.
4. A large scale heat and small deformation resistant multi-layered flat plate type support frame structure according to claim 3, wherein: the reinforcing block is arranged in an L shape and covers the outer side of the screw II.
5. A large scale heat and small deformation resistant multi-layered flat plate type support frame structure according to claim 1, wherein: the thickness of the diaphragm and the longitudinal diaphragm which are positioned in the airflow surface is not more than 5 mm.
6. A large scale heat and small deformation resistant multi-layered flat plate type support frame structure according to claim 1, wherein: and the left beam and the right beam are fixedly connected with the stop block I through screws III.
7. The large scale heat and small deformation resistant multi-layered flat plate type support frame structure of claim 5, wherein: the longitudinal partition plates and the transverse partition plates are provided with grooves at the crossing positions.
8. A large scale heat and small deformation resistant multi-layered flat plate type support frame structure according to claim 3, wherein: the left beam, the upper beam, the right beam, the lower beam, the reinforcing block, the stop block I, the transverse partition plate, the reinforcing plate, the stop block II and the longitudinal partition plate are all made of C-C composite material plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011440530.XA CN112556974A (en) | 2020-12-08 | 2020-12-08 | Large-scale heat-resisting little flat braced frame structure of multilayer that warp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011440530.XA CN112556974A (en) | 2020-12-08 | 2020-12-08 | Large-scale heat-resisting little flat braced frame structure of multilayer that warp |
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| Publication Number | Publication Date |
|---|---|
| CN112556974A true CN112556974A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011440530.XA Pending CN112556974A (en) | 2020-12-08 | 2020-12-08 | Large-scale heat-resisting little flat braced frame structure of multilayer that warp |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100243811A1 (en) * | 2007-06-26 | 2010-09-30 | Stothers Ian Mcgregor | Ice protection heater system |
| CN108663188A (en) * | 2018-05-14 | 2018-10-16 | 东北大学 | It is a kind of to have vibration isolation heat-insulated and absorb the flexible support mechanism of deformation function |
| CN208349855U (en) * | 2018-06-22 | 2019-01-08 | 山东伟基炭科技有限公司 | A kind of material frame for high-temperature vacuum furnace |
| CN109506876A (en) * | 2018-11-29 | 2019-03-22 | 中国辐射防护研究院 | Temperature lamination simulator and method in a kind of atmospheric boundary layer environmental wind tunnel |
| CN209963033U (en) * | 2019-07-01 | 2020-01-17 | 深圳市石金科技股份有限公司 | Spliced silicon wafer bearing frame |
| CN210565496U (en) * | 2019-08-14 | 2020-05-19 | 江苏富陶车辆部件有限公司 | High-performance connecting plate convenient to install |
-
2020
- 2020-12-08 CN CN202011440530.XA patent/CN112556974A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100243811A1 (en) * | 2007-06-26 | 2010-09-30 | Stothers Ian Mcgregor | Ice protection heater system |
| CN108663188A (en) * | 2018-05-14 | 2018-10-16 | 东北大学 | It is a kind of to have vibration isolation heat-insulated and absorb the flexible support mechanism of deformation function |
| CN208349855U (en) * | 2018-06-22 | 2019-01-08 | 山东伟基炭科技有限公司 | A kind of material frame for high-temperature vacuum furnace |
| CN109506876A (en) * | 2018-11-29 | 2019-03-22 | 中国辐射防护研究院 | Temperature lamination simulator and method in a kind of atmospheric boundary layer environmental wind tunnel |
| CN209963033U (en) * | 2019-07-01 | 2020-01-17 | 深圳市石金科技股份有限公司 | Spliced silicon wafer bearing frame |
| CN210565496U (en) * | 2019-08-14 | 2020-05-19 | 江苏富陶车辆部件有限公司 | High-performance connecting plate convenient to install |
Non-Patent Citations (1)
| Title |
|---|
| 郭栋鹏: "温度层结下建筑物群周围流场影响的数值模拟研究", 《辐射防护》 * |
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