CN110927200B - Vacuum box for developing hot mold state test - Google Patents
Vacuum box for developing hot mold state test Download PDFInfo
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- CN110927200B CN110927200B CN201911413306.9A CN201911413306A CN110927200B CN 110927200 B CN110927200 B CN 110927200B CN 201911413306 A CN201911413306 A CN 201911413306A CN 110927200 B CN110927200 B CN 110927200B
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- test piece
- shell
- side wall
- wall
- vacuum box
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
Abstract
The embodiment of the invention relates to a vacuum box for developing a thermal mode test, which comprises: the device comprises a shell, an opening, a side door, a test piece mounting surface, a line guide and transmission system, annular water cooling equipment, a mounting groove, a test piece, a temperature compensator, a vibration exciter, a displacement guide rod, an acceleration sensor, a shell inner wall heat insulation tile, a heater and a vacuum machine.
Description
Technical Field
The embodiment of the invention relates to the technical field of vacuum boxes, in particular to a vacuum box for developing a thermal mode test.
Background
The conventional modal test is usually carried out in an open environment, but thermal convection exists between the surface of a test piece and the surrounding environment, structural thermal modal analysis is influenced to a certain extent, and a vacuum box test environment is designed in order to eliminate or reduce heat loss generated by convection.
Disclosure of Invention
In view of the above, to solve the above technical problems or some technical problems, embodiments of the present invention provide a vacuum box for performing a thermal modal test
In a first aspect, an embodiment of the present invention provides a vacuum box for performing a thermal mode test, including: the device comprises a shell, an opening, a side door, a test piece mounting surface, a line guide and transmission system, annular water cooling equipment, a mounting groove, a test piece, a temperature compensator, a vibration exciter, a displacement guide rod, an acceleration sensor, a shell inner wall heat insulation tile, a heater and a vacuum machine;
the front side wall of the shell is provided with an opening, the front side wall of the shell is hinged with a side door, the side door is matched with the opening for use, the left side wall of the shell is a test piece mounting surface, the test piece and the temperature compensator are connected through the test piece mounting surface, the right side wall of the shell is fixedly provided with a circuit guide and transportation system, the middle part of the left side wall outer wall of the test piece mounting surface is fixedly provided with an annular water cooling device, the annular water cooling device is arranged on the left side wall of the shell and extends to the outside of the shell, the middle part of the right side wall of the test piece mounting surface is provided with a mounting groove, the number of the mounting grooves is three, the middle part of the mounting groove is fixedly connected with a test piece through a bolt group, the surface of the test piece is provided with a displacement guide rod and an acceleration sensor, the free ends of the test piece and the temperature compensator are provided with heaters, the lower wall surface of the inner cavity of the shell is provided with a vibration exciter, and the lower wall surface of the inner cavity of the shell is provided with a vacuum machine close to the side wall.
In one possible embodiment, the thickness of the test piece mounting surface is 100mm, and the wall thickness of the remaining side wall of the housing is 50 mm.
In one possible embodiment, the inner wall surface of the outer shell is adhered with heat insulation tiles or heat insulation cotton.
In one possible embodiment, the other side walls of the housing and the test piece mounting surface are welded together by angle iron, and the other side walls of the housing are fixedly connected by welding.
In one possible embodiment, the material of the outer shell is stainless steel or carbon steel.
The vacuum box for developing the thermal mode test is characterized in that the front side wall of the shell is provided with an opening, a test piece, a sensor, a vibration exciter and the like can be conveniently installed through the opening, the front side wall of the shell is hinged with a side door, the opening is sealed through the side door, the left side wall of the inner cavity of the shell is a test piece installation surface, the test piece and a temperature compensator are connected through the test piece installation surface, a displacement guide rod and an acceleration sensor are installed on the upper surface of the test piece, the acceleration sensor is located at the other end of the displacement guide rod, a heater is installed at the free end of the test piece and the free end of the temperature compensator, a circuit guide and transmission system is fixedly installed on the right side wall of the inner cavity of the shell, transmission of an internal circuit and an external circuit is guaranteed under the condition that the tightness is guaranteed through the circuit, the root of the test piece is guaranteed to be constant in temperature, the vibration exciter is arranged on the lower wall face of the inner cavity of the shell, and the vacuum machine is arranged on the lower wall face of the inner cavity of the shell close to the side wall, so that the test piece is detected in a closed space, the purpose of eliminating or reducing heat loss generated by convection can be achieved, and the accuracy of structural hot mode analysis is guaranteed.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a schematic view of another three-dimensional structure of the present invention;
fig. 3 is a schematic cross-sectional structure of the present invention.
In the figure: 1-shell, 2-opening, 3-side door, 4-test piece mounting surface, 5-circuit guide system, 6-annular water cooling equipment, 7-mounting groove, 8-test piece, 9-temperature compensator, 10-vibration exciter, 11-displacement guide rod and acceleration sensor, 12-shell inner wall heat insulation tile, 13-heater and 14-vacuum machine.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of understanding of the embodiments of the present invention, the following description will be further explained with reference to specific embodiments, which are not to be construed as limiting the embodiments of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a vacuum box for performing a thermal modal test, comprising: the device comprises a shell 1, an opening 2, a side door 3, a test piece mounting surface 4, a line guide and transmission system 5, annular water cooling equipment 6, a mounting groove 7, a test piece 8, a temperature compensator 9, a vibration exciter 10, a displacement guide rod and acceleration sensor 11, a shell inner wall heat insulation tile 12, a heater 13 and a vacuum machine 14;
the front side wall of the shell 1 is provided with an opening 2, the front side wall of the shell 1 is hinged with a side door 3, the side door 3 is matched with the opening 2 for use, the opening 2 is sealed through the side door 3, the left side wall of the shell 1 is a test piece mounting surface 4, a test piece 8 and the temperature compensator (9) are connected through the test piece mounting surface 4, the side door 3 is mounted on a vertical surface adjacent to the test piece mounting surface 4, so that the test piece 8, a sensor, a vibration exciter 10 and the like can be conveniently mounted, a steel frame is fixedly mounted on the left side wall of the test piece mounting surface 4, a steel frame auxiliary support is adopted on the left side outer wall of the test piece mounting surface 4, the wall of the test piece mounting surface 4 is ensured to vibrate weakly in the vibration process of the test piece 8, the influence of vibration on the vibration characteristic test of the test piece 8 is smaller, guarantee the transmission of internal and external circuit under the condition of leakproofness, test piece installation face 4's left side wall outer wall middle part fixed mounting has annular water cooling equipment 6, through annular water cooling equipment 6, guarantees test piece 8 root constant temperature, annular water cooling equipment 6 sets up and extends to the shell 1 outside in the left side wall of shell 1, test piece installation face 4's right side wall middle part is equipped with mounting groove 7, is convenient for install test piece 8 and temperature compensator 9 through mounting groove 7, the quantity of mounting groove 7 is three, the centre the inside of mounting groove 7 is through bolt group fixedly connected with test piece 8, surface mounting displacement guide arm and acceleration sensor 11 on the test piece, acceleration sensor is located the other end of displacement guide arm, both sides the inside of mounting groove 7 is through bolt group fixedly connected with temperature compensator 9, test piece and temperature compensator free end installation heater 13, the vibration exciter 10 is arranged on the lower wall surface of the inner cavity of the shell, and the vacuum machine 14 is arranged on the lower wall surface of the inner cavity of the shell close to the side wall.
The thickness of the test piece mounting surface 4 is 100mm, and the wall thickness of the rest side walls of the shell 1 is 50 mm.
The inner wall surface of shell 1 is pasted and is had thermal-insulated tile or thermal-insulated cotton 12, and the inner wall of shell 1 includes test piece installation face 4, and thermal-insulated tile or thermal-insulated cotton 12's surface is equipped with the hole of reserving for opening 2, mounting groove 7 and circuit guide system 5, through thermal-insulated tile or thermal-insulated cotton 12, prevents that test platform during operation vacuum chamber wall temperature is too high.
And the other side walls of the shell 1 are welded with the test piece mounting surface 4 in a reinforcing manner through angle iron, and the other side walls of the shell 1 are fixedly connected through welding.
The shell 1 is made of stainless steel or carbon steel.
The working principle is as follows: when the device is used, the side door 3 is opened, a test piece 8 provided with a displacement guide rod and an acceleration sensor is placed into the shell 1 from the opening 2, the test piece 8 is fixed in the mounting groove 7 in the middle of the side wall of the test piece mounting surface 4 through the bolt group, the temperature compensator 9 is fixed in the mounting grooves 7 on the upper side and the lower side of the side wall of the test piece mounting surface 4 through the bolt group, the heater 13 is mounted at the free end of the test piece and the temperature compensator, the side door 3 is closed, the opening 2 is sealed, and the vacuum machine 14 is opened, so that the atmospheric pressure in the vacuum box reaches a low-pressure test state; and then, opening the annular water cooling equipment 6 to ensure the root of the test piece 8 to be constant in temperature, then opening a power supply of the heater 13 to heat the test piece and the temperature compensator, testing when the internal temperature of the test piece is stable, ensuring the transmission of an internal circuit and an external circuit through the line guide and transmission system 5, and monitoring the state of the test piece 8 in real time.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A vacuum box for performing a thermal mode test, comprising: the device comprises a shell (1), an opening (2), a side door (3), a test piece mounting surface (4), a line guide system (5), annular water cooling equipment (6), a mounting groove (7), a test piece (8), a temperature compensator (9), a vibration exciter (10), a displacement guide rod, an acceleration sensor (11), a shell inner wall heat insulation tile (12), a heater (13) and a vacuum machine (14);
the front side wall of shell (1) is equipped with opening (2), the front side wall of shell (1) articulates there is side door (3), side door (3) uses with opening (2) cooperation, the left side wall of shell (1) is test piece installation face (4), through test piece installation face (4) are connected test piece (8) with temperature compensator (9), the right side wall fixed mounting of shell (1) has circuit to lead defeated system (5), the left side wall outer wall middle part fixed mounting of test piece installation face (4) has annular water cooling equipment (6), annular water cooling equipment (6) set up in the left side wall of shell (1) and extend to shell (1) outside, the right side wall middle part of test piece installation face (4) is equipped with mounting groove (7), the quantity of mounting groove (7) is three, the centre the inside of mounting groove (7) is through bolt group fixedly connected with test piece (8), the device comprises a test piece and is characterized in that a displacement guide rod and an acceleration sensor (11) are mounted on the upper surface of the test piece, the acceleration sensor is located at the other end of the displacement guide rod, two sides of the inside of a mounting groove (7) are fixedly connected with a temperature compensator (9) through a bolt group, a heater (13) is mounted at the free end of the test piece and the temperature compensator, a vibration exciter (10) is mounted on the lower wall surface of an inner cavity of a shell, and a vacuum machine (14) is mounted on the lower wall surface of.
2. Vacuum box according to claim 1, characterized in that the thickness of the test piece mounting surface (4) is 100mm and the wall thickness of the remaining side walls of the housing (1) is 50 mm.
3. The vacuum box according to claim 1, characterized in that the inner wall surface of the housing (1) is stuck with heat insulating tiles (12) or heat insulating cotton.
4. The vacuum box according to claim 1, characterized in that the other side walls of the housing (1) and the test piece mounting surface (4) are welded together by angle iron, and the other side walls of the housing (1) are fixedly connected by welding.
5. Vacuum box according to claim 1, characterized in that the material of the outer shell (1) is stainless steel or carbon steel.
6. The vacuum box according to claim 1, characterized in that the lower wall of the inner cavity of the housing is fitted with vacuum machines (14) close to the side walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413306.9A CN110927200B (en) | 2019-12-31 | 2019-12-31 | Vacuum box for developing hot mold state test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413306.9A CN110927200B (en) | 2019-12-31 | 2019-12-31 | Vacuum box for developing hot mold state test |
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| Publication Number | Publication Date |
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| CN110927200A CN110927200A (en) | 2020-03-27 |
| CN110927200B true CN110927200B (en) | 2020-11-13 |
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| JPH07314121A (en) * | 1994-05-27 | 1995-12-05 | Tochigi Pref Gov | Method and device for composite casting of dissimilar metal using lost foam pattern casting method |
| CN101571476A (en) * | 2009-06-09 | 2009-11-04 | 西北工业大学 | Test system for testing damping performance of high-temperature material |
| CN201773012U (en) * | 2010-08-27 | 2011-03-23 | 北京工业大学 | Device for testing dynamic characteristics of joint surface |
| CN102416419A (en) * | 2011-07-27 | 2012-04-18 | 中南大学 | Vibrating creep forming method and device for metal member |
| CN206074211U (en) * | 2016-10-15 | 2017-04-05 | 渤海大学 | A kind of low temperature environment charger for the test of MEMS micro-structure dynamic characteristics |
| CN107051296A (en) * | 2017-01-23 | 2017-08-18 | 西安近代化学研究所 | A kind of electromagnetic excitation resonance mixing arrangement and its control method |
| CN107655647A (en) * | 2017-09-27 | 2018-02-02 | 哈尔滨工业大学 | The hot modal test continuous impulse train excitation device of structure |
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2019
- 2019-12-31 CN CN201911413306.9A patent/CN110927200B/en active Active
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|---|---|---|---|---|
| JPH07314121A (en) * | 1994-05-27 | 1995-12-05 | Tochigi Pref Gov | Method and device for composite casting of dissimilar metal using lost foam pattern casting method |
| CN101571476A (en) * | 2009-06-09 | 2009-11-04 | 西北工业大学 | Test system for testing damping performance of high-temperature material |
| CN201773012U (en) * | 2010-08-27 | 2011-03-23 | 北京工业大学 | Device for testing dynamic characteristics of joint surface |
| CN102416419A (en) * | 2011-07-27 | 2012-04-18 | 中南大学 | Vibrating creep forming method and device for metal member |
| CN206074211U (en) * | 2016-10-15 | 2017-04-05 | 渤海大学 | A kind of low temperature environment charger for the test of MEMS micro-structure dynamic characteristics |
| CN107051296A (en) * | 2017-01-23 | 2017-08-18 | 西安近代化学研究所 | A kind of electromagnetic excitation resonance mixing arrangement and its control method |
| CN107655647A (en) * | 2017-09-27 | 2018-02-02 | 哈尔滨工业大学 | The hot modal test continuous impulse train excitation device of structure |
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| 翼面热环境的并行迭代耦合方法及热模态分析;黄杰 等;《振动、测试与诊断》;20190831;第39卷(第4期);第752-759页 * |
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