CN111103199A - High-temperature flexible loading device - Google Patents
High-temperature flexible loading device Download PDFInfo
- Publication number
- CN111103199A CN111103199A CN201911200514.0A CN201911200514A CN111103199A CN 111103199 A CN111103199 A CN 111103199A CN 201911200514 A CN201911200514 A CN 201911200514A CN 111103199 A CN111103199 A CN 111103199A
- Authority
- CN
- China
- Prior art keywords
- heating
- loading
- test piece
- water bag
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0057—Generation of the force using stresses due to heating, e.g. conductive heating, radiative heating
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a high-temperature flexible loading device, which belongs to the field of experimental mechanics, and comprises a single or a plurality of heating loading units, wherein the plurality of heating loading units realize the partitioned thermal loading force loading; a space formed by the water bag cover and the heat insulation layer is internally provided with a water bag; the device is simple and reliable, the heating is rapid, the loading precision is high, and the test cost is low; the test piece is quickly heated by covering the surface of the test piece with the flexible heating film and the heat insulation material, the heating film directly covers the test piece, so that the heating is quick, the surface temperature of the test piece can reach 300-1000 ℃ in tens of seconds, the heat insulation layer is laid outside the heating layer, the heating speed and the energy consumption loss are well guaranteed, and the test requirement of the flexible quick heating loading is met by loading the water bag.
Description
Technical Field
The invention belongs to the field of experimental mechanics, and particularly relates to a high-temperature flexible loading device.
Background
In the engineering structures of aviation, navigation, traffic, roads and bridges, buildings and ports, structural members made of various materials are all complex stressed members which are in complex stressed states under various environments for a long time, so that the structural strength of the members under various environments is an important research topic in structural mechanics. Particularly, in modern engineering structure design, the strength problems of the structure under complex loads and environments must be researched, and the flexible application of the loads under high-temperature environments is most difficult to realize in the strength problems under the complex loads and the environments, so that the application of complex loads and high-temperature environment states to various engineering structures in a laboratory is urgently needed to evaluate the mechanical strength of the engineering structures, provide scientific basis for structure design and prepare for the next theoretical establishment.
It has long been difficult to achieve cost reduction for such structural tests. At present, a quartz lamp heating method cannot be realized, mainly due to the shielding of a loading device, the problem that the temperature application on the surface of a structure cannot be solved is solved, the key problem is that the uniform distribution or the surface load and the temperature application on the structure cannot be solved, and the quartz lamps and equipment have high price, serious light pollution, strict requirements on the use environment and the operation of personnel, high energy consumption and high test cost for use.
Disclosure of Invention
The invention discloses a high-temperature flexible loading device aiming at the problems in the prior art, the device is used for directly covering a flexible heating film and a heat insulation material on the surface of a test piece to quickly heat the test piece, and the heating film is directly covered on the test piece, so that the heating is quick; the loading units can be arranged to solve the problem of partitioned heating and loading, and the test cost is low and the technical effect is good.
The invention is realized by the following steps:
the high-temperature flexible loading device is characterized by comprising one or a plurality of heating loading units, wherein one heating loading unit sequentially comprises a thermocouple, a heating body, a heat preservation and insulation layer and a water bag cover from bottom to top; the space formed by the water bag cover and the heat-insulating layer is internally provided with a water bag.
The heating structure formed by the heating body and the heat insulation layer is directly covered on the test piece, so that the surface of the test piece is directly contacted, and the flexible covering of the surface of the test piece is realized; the method of directly covering the heating body on the test piece is utilized to realize the direct contact of the surface of the test piece, ensure the rapid heating and energy saving, simultaneously well solve the difficult problem of the subarea heating and loading and also solve the problem of light pollution.
The heat preservation and insulation layer is laid outside the heating layer, so that the heating speed and the energy consumption loss are well guaranteed, and the water bag is used for loading, so that the test requirement of flexible quick heating and loading is well met.
When a test piece made of a metal material is installed, firstly, a thermocouple is installed at a point needing temperature measurement on the surface of the metal test piece, a thermocouple lead is led out of a heating area, then an insulating layer is laid, a heating body is placed on the insulating layer, and then a heat insulation layer is placed on the heating body; then binding the test piece, and installing the water bag and the water bag cover to finish installation; the test piece made of the non-conductor material does not need to be provided with an insulating layer, the heating body can be directly placed, the heat-insulating layer is placed on the heating body, and finally the parts are bound on the test piece, and the water bag cover are installed to complete installation.
Furthermore, the heat insulation layer consists of glass fiber cloth and a silicon rubber plate.
Further, when the thermal loading device is at a thermal loading temperature lower than 200 ℃, the thermocouple, the insulating layer, the heating body and the heat-insulating layer are bound on the test piece in a gluing mode; and binding the thermocouple, the insulating layer, the heating body and the heat insulating layer on the test piece through the glass fiber ribbon when the heat loading temperature is 200-1000 ℃.
Further, a water inlet and a pressure gauge are respectively arranged above the water bag cover; the water bag is connected with a water pressure source, and the application of force load in the loading device is realized by applying water pressure to the water bag.
Furthermore, the heating body comprises a heating unit wiring terminal and an electric heating unit, and the application of thermal load in the loading device is realized by switching on a power supply. The heating unit wiring terminal and the electric heating unit are used for heating the test piece, so that the application of the thermal load on the heating surface of the test piece can be realized.
The beneficial effects of the invention and the prior art are as follows:
the device of the invention is simple and reliable, the heating is rapid, the loading precision is high, the test cost is low, and the high-temperature flexible loading technology comprises the following steps: the test piece is quickly heated by covering the surface of the test piece with the flexible heating film and the insulating and heat-insulating material, the heating film is directly covered on the test piece, so that the heating is quick, the surface temperature of the test piece can reach 300-1000 ℃ in tens of seconds, the heat-insulating layer is laid outside the heating layer, the heating speed and the energy consumption loss are well guaranteed, the water bag is used for loading, and the test requirement of flexible quick heating and loading is well met
The method that the heating body directly covers the test piece is adopted, so that the surface of the test piece is directly contacted, the flexible covering of the surface of the test piece is realized, and the rapid heating and energy saving are ensured; meanwhile, a heat insulation layer is laid outside the heating layer, so that the heating speed and the energy consumption loss are well guaranteed, and the test requirement of flexible quick heating and loading is well met by loading through a water bag; the invention solves the problem of heating and loading in different areas, and also solves the problem of light pollution;
the method is scientific, clear in principle, simple, low in test cost and good in technical effect. The method can be widely applied to the strength test research of engineering structures such as aerospace, traffic and the like in high-temperature environments.
Drawings
FIG. 1 is a schematic structural diagram of a single heating and loading unit in the high-temperature flexible loading device according to the present invention;
FIG. 2 is a schematic view of a heating unit in the high temperature flexible loading device according to the present invention;
FIG. 3 is a schematic view of the partitioned thermal loading force loading in the high temperature flexible loading apparatus according to the present invention;
the test device comprises an insulating layer 1, a heating body 2, a heat preservation and insulation layer 3, a water bag cover 4, a water bag 5, a thermocouple 6, a water inlet 7, a pressure gauge 8, a heating unit wiring terminal 9, an electric heating unit 10 and a test piece 11.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the present invention is further described in detail by the following examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-2, the high-temperature flexible loading device for the first structural test of the invention comprises a heating body 2, an insulating layer 1, a heat-insulating layer 3, a water bag 5, a water bag cover 4 and a thermocouple 6, which are sequentially installed by the steps to form a heating loading device with heating and loading capabilities; when the thermal loading device is used for installing the metal structure, a thermocouple is installed at a point needing temperature measurement on the surface of the metal structure (the temperature in the area needs to be controlled), a lead of the thermocouple 6 is led out of a heating area, then an insulating layer 1 is laid, a heating body 2 is placed on the insulating layer 1, the heating body 2 comprises a heating unit wiring terminal 9 and an electric heating unit 10, and the power supply is switched on to realize the application of thermal load in the loading device. Finally, a heat preservation and insulation layer (glass fiber binding tapes are used for binding all the parts on the structural test piece, and a water sac 5 and a water sac cover 4 are installed) consisting of glass fiber cloth and a silicon rubber plate is arranged on the heating body 2.
The heating body 2 can be directly placed without installing an insulating layer on a structural test piece made of a non-conductor material, the heat-insulating layer 3 is placed on the heating body 2, and finally, the structural test piece 11 is bound with the parts through a glass fiber binding belt, and the water bag 5 and the water bag cover 4 are installed to complete the installation of the heating loading device.
Setting the temperature of the temperature controller according to the requirement of thermal loading, then switching on a power supply, heating the test piece through the thermal loading device, and completing the installation of a single thermal loading device, so that the application of the thermal load on the heating surface of the test piece can be realized.
And according to the requirement of force loading, a water pressure source is connected, and the force load and the heat load are applied by applying water pressure to the water sac 5. According to the test requirements, synchronous or step-by-step thermal loading and force loading can be carried out with the temperature and force value loading requirements, the installation of a single thermal loading force loading device is completed, and the application of the thermal load and the application of the force load on the heating surface of the test piece can be realized.
As shown in fig. 3: a second embodiment of the present invention is a multi-zone thermal loading apparatus, comprising: a plurality of heating load units; the thermal loading force loading device comprises a heating body, an insulating layer, a heat preservation and insulation layer, a thermocouple, a water bag and a water bag cover, and the thermal loading force loading device with the heating and force application functions is formed by sequentially installing the steps; according to the requirement of multi-region thermal loading force loading, the temperature of the temperature controller is set for each heating stress application region respectively, then the power is switched on, the test piece is heated through the plurality of thermal loading devices, the installation of the plurality of thermal loading devices is completed, and the application of the thermal load of the multi-region heating surface of the test piece is realized. And according to the force loading requirements of each subarea, connecting a water pressure source, and applying the water pressure to the water bag to finish the application of the force load and the heat load of each area.
When the thermal loading temperature of the test piece is lower than 200 ℃, the device can be fixed by adopting a glue joint mode; when the heat loading temperature is 200-1000 ℃, the device and the test piece are fixed together by a glass fiber cable tie; after the test is finished, the thermal loading device can be detached, so that the thermal loading device can be recycled conveniently. And selecting insulating layers and insulating layers of different materials and different thicknesses according to the temperature of the structural heat loading.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. The high-temperature flexible loading device is characterized by comprising a single or a plurality of heating loading units, wherein the plurality of heating loading units realize partitioned thermal loading force loading, and one heating loading unit sequentially comprises a thermocouple (6), a heating body (2), a heat insulation layer (3) and a water bag cover (4) from bottom to top; a water bag (5) is arranged in a space formed by the water bag cover (4) and the heat insulation layer (3);
when a test piece made of a metal material is installed, firstly, a thermocouple (6) is installed at a point needing temperature measurement on the surface of the metal test piece, a lead of the thermocouple (6) is led out of a heating area, then an insulating layer (1) is laid, a heating body (2) is placed on the insulating layer (1), and then a heat insulation layer (3) is placed on the heating body (2); then the water bag is bound on a test piece (11), and the water bag cover are installed to finish installation;
the test piece made of the non-conductor material does not need to be provided with an insulating layer, the heating body (2) can be directly placed, the heat-insulating layer (3) is placed on the heating body (2), and finally, the parts are bound on the test piece, and the water bag cover are arranged to complete installation.
2. The high-temperature flexible loading device according to claim 1, wherein the thermal insulation layer is composed of glass fiber cloth and a silicon rubber plate.
3. The high-temperature flexible loading device according to claim 1, wherein when the thermal loading device is at a thermal loading temperature lower than 200 ℃, the thermocouple (6), the insulating layer (1), the heating body (2) and the heat-insulating layer (3) are bound on the test piece (11) in a gluing manner; when the heat loading temperature is 200-1000 ℃, the thermocouple (6), the insulating layer (1), the heating body (2) and the heat insulating layer (3) are bound on the test piece (11) through a glass fiber ribbon.
4. The high-temperature flexible loading device according to claim 1, wherein a water inlet (7) and a pressure gauge (8) are respectively arranged above the water bag cover (4); the water bag (5) is connected with a water pressure source, and the force load in the loading device is applied by applying water pressure to the water bag (5).
5. A high-temperature flexible loading device according to claim 1, wherein the heating body (2) comprises a heating unit connecting terminal (9) and an electric heating unit (10), and the application of the thermal load in the loading device is realized by switching on the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200514.0A CN111103199A (en) | 2019-11-29 | 2019-11-29 | High-temperature flexible loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200514.0A CN111103199A (en) | 2019-11-29 | 2019-11-29 | High-temperature flexible loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111103199A true CN111103199A (en) | 2020-05-05 |
Family
ID=70421306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200514.0A Pending CN111103199A (en) | 2019-11-29 | 2019-11-29 | High-temperature flexible loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111103199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730091A (en) * | 2020-12-23 | 2021-04-30 | 北京机电工程研究所 | Force and heat integrated test loading device and test method for test piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721612A (en) * | 2012-07-03 | 2012-10-10 | 北京航空航天大学 | High temperature-distributed load thermal strength test device for plane structure of high-speed missile aerobat |
| CN104697862A (en) * | 2013-12-06 | 2015-06-10 | 中国飞机强度研究所 | Thermo-mechanical coupling loading method for thermal strength tests |
| CN109613052A (en) * | 2018-11-12 | 2019-04-12 | 南京航空航天大学 | A kind of hot loading device of structural test |
-
2019
- 2019-11-29 CN CN201911200514.0A patent/CN111103199A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721612A (en) * | 2012-07-03 | 2012-10-10 | 北京航空航天大学 | High temperature-distributed load thermal strength test device for plane structure of high-speed missile aerobat |
| CN104697862A (en) * | 2013-12-06 | 2015-06-10 | 中国飞机强度研究所 | Thermo-mechanical coupling loading method for thermal strength tests |
| CN109613052A (en) * | 2018-11-12 | 2019-04-12 | 南京航空航天大学 | A kind of hot loading device of structural test |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730091A (en) * | 2020-12-23 | 2021-04-30 | 北京机电工程研究所 | Force and heat integrated test loading device and test method for test piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109613052B (en) | Heat loading device for structural test | |
| CN106054978B (en) | Product temperature control system and method during a kind of atmospheric high-low temperature experiment | |
| CN111103199A (en) | High-temperature flexible loading device | |
| CN202430352U (en) | High-temperature spinning manifold | |
| CN104652835A (en) | Electric-tracing heat preservation method for winter construction of wet joint of composite beam | |
| CN103280472B (en) | A kind of stratosphere aerostatics flexible netted solar array and method of production thereof | |
| CN205897316U (en) | Intelligence control by temperature change wall paper that generates heat | |
| WO2017177777A1 (en) | Heat-storage and energy-saving integrated board for electric floor heating | |
| CN106154638A (en) | Display panels and manufacture method thereof | |
| CN106079690A (en) | A kind of aerosil felt of strong weatherability and preparation method thereof | |
| CN105223722A (en) | A kind of color membrane substrates, display panels, liquid crystal indicator and manufacture method | |
| CN114739821A (en) | Aerospace plane wall plate structure load simulation test device and method | |
| CN207558819U (en) | Electric heating system based on electrically heated laminated hot plate and laminated hot plate | |
| WO2019144766A1 (en) | Composite stone panel, temperature control wall, and temperature control floor | |
| Bazheryanu et al. | Local repair of parts from polymer composite material with the use of portable hot bonder control systems | |
| ITMO20070105A1 (en) | HEATING SYSTEM | |
| JP2019513338A (en) | Vehicle roof solar chip integrated device, solar car and chip packaging method | |
| CN103996729B (en) | A kind of reinforced flexible thin-film solar cell that dispels the heat is heat insulation and strengthens composite construction and method of production thereof | |
| CN207675881U (en) | A kind of temperature experimental provision | |
| CN105647416A (en) | Novel foam adhesive tape of multi-layer structure and processing method thereof | |
| CN105433466B (en) | knee pad | |
| CN105098101B (en) | The solidification of OLED packaging line and device aging system | |
| CN210508148U (en) | Self-heating integrated plate | |
| CN205846179U (en) | A kind of battery modules with heating arrangements | |
| CN108459424A (en) | Load transfer station, adhering device and its attaching method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200505 |