CN113702424A - Heat insulation testing machine - Google Patents
Heat insulation testing machine Download PDFInfo
- Publication number
- CN113702424A CN113702424A CN202111004775.2A CN202111004775A CN113702424A CN 113702424 A CN113702424 A CN 113702424A CN 202111004775 A CN202111004775 A CN 202111004775A CN 113702424 A CN113702424 A CN 113702424A
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- heating
- heat
- heat insulation
- housing
- workpiece
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- 238000012360 testing method Methods 0.000 title claims abstract description 130
- 238000009413 insulation Methods 0.000 title claims abstract description 112
- 238000010438 heat treatment Methods 0.000 claims abstract description 167
- 238000001816 cooling Methods 0.000 claims abstract description 77
- 238000012546 transfer Methods 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims 2
- 238000004321 preservation Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 238000013480 data collection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Abstract
The invention relates to a heat insulation tester, which comprises a rack and a pressure sensor, wherein a heating device and a cooling device are both arranged on the rack, at least one heating device is movably arranged on the rack, and the heating device and the cooling device are oppositely arranged to clamp a workpiece to be tested; the driving device is used for moving at least one of the heating device and the cooling device; in the heat insulation testing machine, the heat preservation block can store heat to provide stable heat for the heating test board, the heating test board can be covered by the heat preservation board to quickly heat up the heating test board, after the temperature rise is completed, the heat transfer surface of the workpiece of the heating test board can be exposed by the movable heat preservation board, and the heat transfer surface is used for heating the workpiece to be tested in heat conduction contact with the workpiece to be tested.
Description
Technical Field
The invention relates to a heat insulation testing machine.
Background
The thermal conductivity is an important index for representing the thermal conductivity of a substance and an important parameter for measuring the thermophysical properties of the material. The measurement method of the thermal conductivity coefficient can be mainly divided into a steady state method and an unsteady state method, wherein the steady state method means that the temperature distribution in the test piece is a steady state temperature field which does not change along with time, and the thermal conductivity coefficient of the test piece can be directly measured by measuring the heat flow rate and the temperature gradient of the unit area of the workpiece after the workpiece reaches thermal balance. The principle of the heat flow method used for the steady-state heat conductivity coefficient of the material is that when a hot plate and a cold plate are in a stable state with constant temperature and constant temperature difference, a unidirectional stable heat flow density is established in a central measuring area of a heat flow meter and a central area of a test piece through a heat flow meter device, and the heat flow passes through the measuring area of the heat flow meter and the middle area of the test piece to realize the measurement of the heat conductivity coefficient.
Chinese patent with publication number CN207571063U discloses a high-temperature heat transfer performance tester, which comprises a box body and a support column arranged on the box body, wherein a top plate is arranged at the top of the support column, a pressure sensor is arranged on the top plate, a cooling plate is arranged at the lower side of the pressure sensor, a heating plate is arranged at the lower side of the cooling plate, a workpiece to be tested is arranged between the cooling plate and the heating plate, and the periphery of the heating plate is insulated by a heat-insulating layer. The driving device is arranged in the box body and can drive the heating plate to ascend or descend, so that the heating plate and the cooling plate clamp a workpiece to be tested, the pressure sensor can monitor the load of the workpiece to be tested, and the actual use working condition is simulated. When the tester is used, the heating device needs to be heated to reach a stable temperature, the heating rate of the heating device is low, and the heat loss of the heating device is large in the heating process.
Disclosure of Invention
The invention aims to provide a heat insulation testing machine, which is used for solving the technical problem that the heat loss of the existing heat insulation testing machine is large.
The heat insulation tester adopts the following technical scheme:
the heat insulation test machine comprises:
a frame;
the pressure sensor is used for measuring the pressure applied to the workpiece to be measured;
the heating device and the cooling device are arranged on the rack, at least one of the heating device and the cooling device is movably arranged on the rack, and the heating device and the cooling device are arranged oppositely to clamp a workpiece to be measured;
the driving device is used for enabling at least one of the heating device and the cooling device to move and applying pressure to the workpiece to be measured;
the heating device includes:
a housing;
the heating test board is at least partially positioned in the shell and is provided with a workpiece heat transfer surface which is used for contacting with a workpiece to be tested and transferring heat to the workpiece to be tested;
the heating element is arranged in the shell and used for heating the heating test plate;
at least one part of the heat insulation block is arranged in the shell, the heating test board and the heat insulation block enclose a heating cavity, and at least one part of the heating element is positioned in the heating cavity to heat the heating cavity;
the heat insulation plate is used for covering the heating test plate and enabling the heating test plate to be located between the heat insulation block and the heat insulation plate; the heat insulation board is movably arranged on the shell, so that the workpiece heat transfer surface of the heating test board can be exposed out for heat conduction contact with a workpiece to be tested through the movable heat insulation board after the heating test board reaches a preset temperature.
Has the advantages that: in the heat insulation testing machine, the heat insulation block and the heating test board are enclosed to form the heating cavity, at least one part of the heating element is positioned in the heating cavity to heat the heating cavity, so that stable heat is provided for the heating test board, the heating test board can be covered by the heat insulation board to quickly heat the heating test board, after the temperature rise is finished, the heat transfer surface of the workpiece of the heating test board can be exposed through the movable heat insulation board and is used for heating the workpiece to be tested in heat conduction contact with the workpiece to be tested.
Further, heated board and shell sliding fit can make the work heat transfer surface that heats the survey test panel expose through moving away the heated board. The insulation board is in sliding fit with the shell, operation is convenient, and the structure is simple.
Furthermore, a slot is formed in the shell or the shell and the heat insulation block are enclosed to form a slot, and the heat insulation plate is inserted into the slot. The plug-in mounting structure is more convenient to operate.
Furthermore, the shell comprises a shell body and a folded plate fixed on the shell body, and the folded plate and the shell body form the slot in an enclosing mode. The processing of the shell is convenient.
Furthermore, the slot sets up two at least, wherein two at least slots are used for the direction sliding fit with the relative both sides of heated board respectively.
Furthermore, be provided with the spliced pole on the board is surveyed in the heating, the spliced pole passes thermoblock and shell, and the spliced pole is provided with fastening nut including the screw thread section that stretches out the shell on the screw thread section, supports on the shell after fastening nut screws up, makes the thermoblock press from both sides tightly between shell and the board is surveyed in the heating. So that the heat-insulating block and the heating test board are fixed more stably.
Furthermore, the heating device and the cooling device are arranged up and down, the heating device is arranged on the upper side, the driving device applies upward acting force to the cooling device to enable the cooling device to move upwards, the pressure sensor is arranged on the upper side of the shell, a sensor heat insulation piece is arranged between the pressure sensor and the shell, the sensor heat insulation piece and the shell are arranged at an interval up and down, and the heating device is fixed with the sensor heat insulation piece through a thread section. The sensor heat insulation piece and the shell are vertically spaced, so that heat transfer from the shell to the sensor heat insulation piece is reduced, and the heat insulation effect is improved.
Furthermore, the threaded section is in contact with the sensor heat insulation piece through the upper end face, an axially extending threaded hole is formed in the threaded section, a connecting screw is arranged on the sensor heat insulation piece, and the connecting screw penetrates through the sensor heat insulation piece and then is screwed into the threaded hole, so that the threaded section and the sensor heat insulation piece are fixed. The threaded section is in contact with the heat insulation piece of the sensor through the end face, the contact area is small, and heat transfer is further reduced.
Further, the heating device and the cooling device are arranged up and down, the heating device is arranged on the upper side, and the driving device applies upward acting force to the cooling device to enable the cooling device to move upwards. The workpiece is placed on the cooling device below before testing, and a worker does not need to wear a thermal protection device in the workpiece placing process, so that the workpiece can be conveniently placed in the testing process.
Furthermore, pressure sensor sets up in the shell upside, be provided with the sensor heat insulating part between pressure sensor and the shell, sensor heat insulating part and shell interval setting from top to bottom set up, set up the heat transfer of the reducible shell of sensor heat insulating part to pressure sensor between pressure sensor and heating device's shell, reduce the influence of heat to the pressure sensor test.
Further, the heated test board is at least partially embedded in the heat retention block. Can keep warm to the heating survey test panel better through the heat insulating block.
Drawings
FIG. 1 is a schematic structural diagram of a thermal insulation tester according to embodiment 1 of the present invention;
FIG. 2 is a front view of a thermal insulation tester according to embodiment 1 of the present invention;
FIG. 3 is an exploded view of a heating device in an embodiment 1 of the thermal insulation tester of the present invention;
FIG. 4 is another exploded view of the heating device in the embodiment 1 of the heat insulation testing machine of the present invention;
FIG. 5 is a schematic view of the internal structure of a heating device in embodiment 1 of the heat insulation testing machine according to the present invention;
FIG. 6 is another schematic view of the heating device of embodiment 1 of the heat insulation testing machine of the present invention;
FIG. 7 is a schematic structural view of a heat-retaining block in embodiment 1 of the heat-insulating testing machine of the present invention;
FIG. 8 is an exploded view of a thermal insulation tester according to embodiment 2 of the present invention;
FIG. 9 is a schematic view of a heating device and a connecting plate of the heating device in embodiment 3 of the thermal insulation testing machine according to the present invention;
FIG. 10 is an exploded view of an embodiment 4 of the thermal insulation tester of the present invention;
in the figure: 1. a frame; 11. a support table; 12. a support pillar; 13. a top plate; 14. a box body; 2. a pressure sensor; 3. a heating device; 31. a housing; 311. a slot; 312. a housing; 313. folding the plate; 32. a heating member; 33. a heat preservation block; 331. a heating member mounting hole; 332. a connecting column mounting hole; 333. a groove of the heat preservation block; 34. heating the test plate; 35. a thermal insulation board; 36. connecting columns; 361. a threaded segment; 37. fastening a nut; 38. a connecting screw; 4. a cooling device; 41. cooling the test plate; 42. a water cooler; 421. water-cooling the shell; 422. a water-cooled panel; 5. the sensor insulates against the hot water cold plate; 6. a piston rod; 7. a length measuring device; 8. an instrument platform; 9. the heating device is connected with the board.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The features and properties of the present invention are described in further detail below with reference to examples.
The specific embodiment 1 of the heat insulation testing machine of the invention:
as shown in fig. 1 to 4, the heat insulation testing machine includes a frame 1, a pressure sensor 2, a heating device 3, a cooling device 4, and a driving device. The pressure sensor 2 is used for measuring the pressure applied to the workpiece to be measured, the heating device 3 and the cooling device 4 are both arranged on the rack 1, the cooling device 4 is movably arranged on the rack 1, and the heating device 3 and the cooling device 4 are arranged oppositely to clamp the workpiece to be measured. The driving device is used for driving the cooling device 4 to move and applying pressure to the workpiece to be measured.
The heating device 3 and the cooling device 4 are arranged up and down, the heating device 3 is arranged on the upper side, the driving device applies upward acting force to the cooling device 4 to enable the cooling device 4 to move upwards, the pressure sensor 2 is arranged on the upper side of the heating device 3, and a sensor heat insulation piece is arranged between the pressure sensor 2 and the heating device 3. In this embodiment, the sensor heat insulation member is a sensor heat insulation water cooling plate 5, and the sensor heat insulation water cooling plate 5 is externally connected with a circulating water cooling device.
The rack 1 comprises a box body 15, a supporting platform 11 positioned on the upper side of the box body 15 and a supporting column 12 fixed on the supporting platform 11, wherein a top plate 13 is arranged at the top of the supporting column 12, and the pressure sensor 2 is arranged on the top plate 13. The driving device is arranged in the box body 15, in this embodiment, the driving device is a telescopic driving cylinder, and a piston rod 6 of the telescopic driving cylinder extends out of the box body 15 and penetrates through the supporting platform 11 to push the cooling device 4 to move upwards. The supporting column 12 is provided with an instrument platform 8 in a vertically guiding sliding manner, the cooling device 4 is arranged on the instrument platform 8, and the telescopic driving cylinder drives the instrument platform to enable the cooling device 4 to move upwards. The supporting platform 11 is provided with a length measuring device 7 for measuring the thickness of the workpiece to be measured.
The cooling device 4 includes a cooling test plate 41 and a water cooler 42, and the cooling test plate 41 is fixed on an upper side of the water cooler 42. The upper surface of the cooling test board 41 is a cold board test surface for contact with a workpiece to be tested. The cooling device 4 includes a cold plate thermal sensor, which in this embodiment is also a thermocouple, that senses heat from the cold plate, embedded in the cold test plate 41 and extending to the cold plate test face. Because the cooling device 4 is arranged at the lower side of the workpiece to be measured, the workpiece to be measured can be placed on the cooling test board 41 of the cooling device 4 in advance, the workpiece to be measured can be placed conveniently, and the measurement efficiency is improved. A heat flow meter is fitted to the cooling test board 41. In some test conditions, a heat flow meter is not required, and a cooled test plate 41 without a heat flow meter may be used. In this embodiment, a quick connector is installed on the signal line of the heat flow meter, so that the cooling test board 41 with the heat flow meter is conveniently detached.
The water cooler 42 comprises a water cooling shell 421 and a water cooling panel 422 fixed on the top of the water cooling shell 421, the water cooling shell 421 is a groove-shaped structure with an upward opening, and the opening of the water cooling shell 421 is sealed by the water cooling panel 422 to form a closed water cooling cavity.
As shown in fig. 3 to 6, the heating device 3 includes a housing 31, a heating element 32 disposed in the housing 31, a heat insulation block 33 disposed in the housing 31, a heating test board 34, and a heat insulation board 35, wherein the heating test board 34 is embedded in the heat insulation block 33 and forms a heating cavity with the heat insulation block 33, and the middle of the heating element 32 is located in the heating cavity. The lower surface of the heating test board 34 is exposed to form a work heat transfer surface for contacting the work to be tested and transferring heat to the work to be tested.
The heating test board 34 is provided with a connecting column 36, and the connecting column 36 passes through the heat-insulating block 33 and the housing 31. As shown in fig. 7, the heat-insulating block 33 is provided with a heat-insulating block groove 333, the heating test board 34 is embedded in the heat-insulating block groove 333, a positioning step for positioning the heating test board 34 is provided in the heat-insulating block groove 333, the heat-insulating block 33 is further provided with a heating element mounting hole 331 and a connecting column mounting hole 332, and the heating element mounting hole 331 and the connecting column mounting hole 332 are both through holes. Both ends of the heating member 32 are mounted in the heating member mounting holes 331. In other embodiments, the heating element may have one end fixed within the heating element mounting hole and another end extending into the heating chamber. In other embodiments, the heating element may be located entirely within the heating chamber, and a fixing clip may be disposed within the heating chamber to fix the heating element.
The connecting column 36 comprises a threaded section 361, the threaded section 361 extends out of the shell 31 after the connecting column 36 passes through the connecting column mounting hole 332, a fastening nut 37 is arranged on the threaded section 361, and the fastening nut 37 abuts against the outer side of the shell 31 after being screwed down, so that the heat-insulating block 33 is clamped between the shell 31 and the heating test board 34, and the heat-insulating block 33, the heating test board 34 and the shell 31 are fixedly connected. The threaded section 361 is provided with an axially extending threaded hole, the sensor heat insulation water cold plate 5 is provided with a connecting screw hole, the sensor heat insulation water cold plate 5 is fixedly connected with the threaded section 361 through a connecting screw 38 penetrating through the connecting screw hole, and the connecting screw 38 is screwed into the threaded hole in the threaded section 361.
The heating apparatus 3 further includes a thermal plate thermal sensor for monitoring heat radiated toward the heated test plate 34, in this embodiment, a thermocouple embedded in the heated test plate 34 and extending to the heat transfer surface of the workpiece. In this embodiment, the heating member 32 is a silicon carbide rod, and the heating temperature can reach 1000 ℃. In this embodiment, the heat insulating block 33 is mullite, and the heat insulating plate 35 is a high temperature resistant felt plate.
The insulation board 35 is used to cover the exposed side of the heating test board 34, so that the heating test board 34 is heated rapidly. The heat insulation board 35 is movably disposed on the housing 31, and after the heating test board 34 reaches a predetermined temperature, the heat transfer surface of the workpiece of the heating test board 34 can be exposed through the movable heat insulation board 35, and thus can be in heat conductive contact with the workpiece to be tested.
In this embodiment, the housing 31 has a housing groove with a downward opening, and the heat insulating block 33 is disposed in the housing groove. The slot 311 is arranged at the slot of the shell, and the insulation board 35 is inserted in the slot 311 and is in guide sliding fit with the slot 311. The outer shell 31 comprises a shell 312 and a flap 313 fixed on the shell 312, wherein the flap 313 and the shell 312 enclose the slot 311. In this embodiment, the folded plate 313 is L-shaped, and includes diaphragm and riser, and the riser is fixed on the lateral wall of casing, and the diaphragm horizontal extension is used for dragging the heated board. The folded plate 313 is provided with two, the corresponding slots 311 are provided with two, and the two slots 311 are respectively used for being in guiding sliding fit with the two opposite sides of the heat insulation plate 35. One end of the slot 311 is used for inserting the insulation board 35, and the other end is provided with a baffle for stopping the insulation board 35, so that the insulation board 35 is prevented from sliding. In other embodiments, the slot may be defined by a flap of the housing and the insulating block.
In this embodiment, the heating test board 34 is embedded in the thermal insulation block 33, and the bottom surface of the heating test board 34 is flush with the bottom surface of the thermal insulation block 33. In other embodiments, the bottom surface of the heated test board may also protrude downward from the heat-insulating block, and in other embodiments, the heated test board may also be fixed on the lower side of the heat-insulating block.
The box body is internally provided with a data collecting and controlling system which is controlled by a Central Processing Unit (CPU) of the computer, and the data collecting and controlling system receives and collects the temperature and heat flow collected by the hot plate heat sensor and the cold plate heat sensor, the pressure collected by the pressure sensor 2 and the thickness of the workpiece to be measured by the length measuring device 75. The box body 1 is provided with a power switch, a heating switch, a display screen and an input panel which are respectively and electrically connected with a data collecting and controlling system. The control temperature of the heating device 3 and the control pressure of the pressure sensor 2 are input through the input panel so as to display the temperature and the heat flow collected by the hot plate heat sensor and the cold plate heat sensor, the thickness of the workpiece to be measured by the length measuring device 7, the control temperature of the heating device 3, the control pressure of the pressure sensor 2 and the pressure loaded on the workpiece to be measured, which are measured by the pressure sensor 2.
The Central Processing Unit (CPU) can be externally connected with a computer outside the box body, so that a worker can input and display a test result conveniently, and the test result can be recorded, calculated and analyzed through the externally connected computer.
The use process comprises the following steps: the power switch is turned on, the set pressure and the temperature of the heating test board 34 are input through the input panel, the heat insulation board 35 is inserted into the shell 31, the heating switch is turned on, the heating device 3 heats the heating test board 34, and after the temperature of the heating test board 34 rises to the preset temperature, the heat insulation board 35 is drawn out.
The workpiece to be tested is placed on the cooling test board 41, the cooling test board 41 is lifted until the workpiece to be tested positioned above the cooling test board 41 is contacted with the heating test board 34, the pressure measured by the pressure sensor 2 reaches the preset pressure, the cooling test board 41 is cooled by the cooling device 4, the data collection and control system collects the thickness of the workpiece to be tested, the temperature of the hot plate heat sensor, the temperature of the cold plate heat sensor, the heat flow of the heat flow meter and other data, the data are displayed on the display screen, and the test result is recorded, calculated and analyzed through an external computer to obtain the heat conductivity coefficient of the workpiece to be tested.
This device also can be used to test the temperature resistance of the work piece that awaits measuring, opens switch, surveys the board 34 temperature in input panel input pressure, heating, arranges heated board 35 in shell 31 on, opens the heating switch, and heating device 3 surveys board 34 to the heating and heaies up the heating, waits to heat and surveys 34 temperature elevations in the board to predetermineeing the temperature after, takes out heated board 35. The cooling test board 41 without a heat flow meter is arranged above the cooling device 4, the workpiece to be tested is arranged on the cooling test board 41, the cooling test board 41 is lifted until the workpiece to be tested positioned above the cooling test board 41 is contacted with the heating test board 34, the pressure measured by the pressure sensor 2 reaches the preset pressure, the cooling test board 41 is not required to be cooled by the cooling device 4, the data collection and control system collects the thickness of the workpiece to be tested, the temperature of the hot plate heat sensor, the temperature of the cold plate heat sensor and other data and displays the data on a display screen, the temperature of the cold plate heat sensor is measured after the temperature-resistant test required time, the test result is recorded, calculated and analyzed through an external computer, and the temperature-resistant performance of the workpiece to be tested is obtained.
The embodiment 2 of the heat insulation testing machine of the present invention is different from the above embodiments only in that, as shown in fig. 8, in this embodiment, a heating device is disposed on the instrument platform 8 on the rack 1, a cooling device is disposed above the heating device, and the pressure sensor 2 is disposed between the water cooler 42 and the top plate 13, and in this case, a sensor heat insulation water cold plate does not need to be disposed. The shell 31 of the heating device is fixed on the instrument platform 8, the heat-insulating block 33 is fixed in the shell 31, the heating test board 34 is positioned on the upper side of the heat-insulating block 33, and the heat-insulating board 35 is arranged on the shell 31 and then positioned on the upper side of the heating test board 34. In this embodiment, the folded plate 313 no longer supports the heat insulation board 35, and the heat insulation board 35 is still inserted into the slot formed by the folded plate 313 and the housing 312 when in use, and at this time, the heat insulation board is supported by the housing 312 of the housing. In other embodiments, the insulation board can be directly placed on the folded plate. Of course, in other embodiments, the heat-insulating plate can also be directly placed on the heat-insulating block, and a folded plate is not needed to be arranged at the moment.
The present invention is a specific embodiment 3 of a thermal insulation testing machine, which is different from the above embodiment 1 only in that, as shown in fig. 9, in this embodiment, a heating device connecting plate 9 is slidably mounted on a supporting column 12, a connecting column 36 of a heating device 3 is connected to the heating device connecting plate 9, and a threaded section 361 of the connecting column 36 is fixedly connected to the heating device connecting plate 9 through a connecting screw 38. The pressure sensor 2 is located between the heating device connection plate 9 and the top plate. The heating device connecting plate 9 is a solid plate in this embodiment. In other embodiments, the heating device connecting plate can also adopt a water-cooling plate, and the stability of the heating device connecting plate is better under the guiding action of the supporting columns.
A specific embodiment 4 of the heat insulation testing machine of the present invention differs from the above embodiment 3 only in that, as shown in fig. 10, in the present embodiment, the pressure sensor 2 is disposed on the lower side of the instrument platform 8, and the pressure sensor 2 is connected to the piston rod 6; the heating device 3 is connected with a heating device connecting plate 9, and the heating device connecting plate 9 is fixed with the support column 12 through a jackscrew.
The specific embodiment 5 of the heat insulation testing machine of the invention is different from the above embodiments only in that in the embodiment, the heat insulation board is hinged on the housing, and covers the heating test board and opens the heating test board in a turning manner.
The specific embodiment 6 of the heat insulation testing machine of the present invention is different from the above embodiments only in that in this embodiment, a heat insulation plate is provided with a lifting hook, a shell is provided with a sliding groove, and the lifting hook hooks the sliding groove and can slide in the sliding groove.
The embodiment 7 of the heat insulation testing machine of the present invention is different from the above embodiments only in that the folded plate is fixed to the housing by bolts in the above embodiments, and in this embodiment, the folded plate is integrally formed with the housing.
The present invention is a specific embodiment 8 of a thermal insulation testing machine, which is different from the above embodiments only in that in this embodiment, a heat-insulating block is directly fixed in a housing, and a heating test board is fixed on the heat-insulating block. In other embodiments, the housing may be U-shaped.
A specific example 9 of a thermal insulation testing machine according to the present invention differs from the above examples only in that the sensor thermal insulation member is thermal insulation cotton.
The embodiment 10 of the heat insulation testing machine of the present invention is different from the above embodiments only in that in this embodiment, one supporting column is disposed and is in rotation-stopping fit with the instrument platform. In other embodiments, the heating device and the cooling device may be horizontally arranged, the frame may be provided with a guide rail, and the heating device is provided with a guide groove adapted thereto.
The specific embodiment 11 of the heat insulation testing machine of the present invention is different from the above embodiments only in that in this embodiment, the driving device employs a motor and a lead screw nut mechanism, wherein the instrument platform is in transmission fit with the lead screw, and the motor drives the lead screw to rotate to drive the instrument platform to move up and down. In other embodiments, an electric push rod can be used to push the instrument platform to move upwards.
The embodiment 12 of the heat insulation testing machine of the present invention is different from the above embodiments only in that in this embodiment, the threaded section of the connecting column is fixed to the sensor heat insulation piece after passing through the sensor heat insulation piece.
A specific example 13 of a heat insulating test machine according to the present invention is different from the above example 1 only in that the sensor heat insulating material and the case are fixedly connected by bolts.
A specific example 14 of a thermal insulation testing machine according to the present invention differs from example 1 only in that a portion of the heat retention block protrudes from the housing. Similarly, the heater test plate may have a portion extending beyond the housing.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Thermal-insulated test machine includes:
a frame (1);
the pressure sensor (2) is used for measuring the pressure applied to the workpiece to be measured;
the heating device (3) and the cooling device (4) are both arranged on the rack (1), at least one of the heating device and the cooling device is movably arranged on the rack (1), and the heating device (3) and the cooling device (4) are arranged oppositely to clamp a workpiece to be measured;
the driving device is used for enabling at least one of the heating device (3) and the cooling device (4) to move and applying pressure to the workpiece to be measured;
characterized in that said heating device (3) comprises:
a housing (31);
a heating test board (34) at least a part of which is arranged in the shell (31) and is provided with a workpiece heat transfer surface for contacting the workpiece to be tested and transferring heat to the workpiece to be tested;
a heating member (32) disposed within the housing (31) for heating the heating test plate (34);
the heat insulation block (33) is at least partially arranged in the shell (31), the heating test board (34) and the heat insulation block (33) enclose a heating cavity, and at least one part of the heating element (32) is positioned in the heating cavity to heat the heating cavity;
the heat insulation plate (35) is used for covering the heating test plate (34) and enabling the heating test plate (34) to be located between the heat insulation block (33) and the heat insulation plate (35); the heat insulation plate (35) is movably arranged on the shell (31) so that the workpiece heat transfer surface of the heating test plate (34) can be exposed for heat conduction contact with a workpiece to be tested through the movable heat insulation plate (35) after the heating test plate (34) reaches a preset temperature.
2. The insulation testing machine according to claim 1, wherein the insulation board (35) is slidably fitted to the housing (31), and the working heat transfer surface of the heated test board (34) can be exposed by removing the insulation board (35).
3. The heat insulation testing machine as claimed in claim 2, wherein the casing (31) is provided with a slot (311) or the casing (31) and the heat insulation block (33) enclose the slot (311), and the heat insulation plate (35) is inserted into the slot (311).
4. The insulation testing machine as claimed in claim 3, wherein the housing (31) comprises a casing (312) and a flap (313) fixed to the casing (312), the flap (313) and the casing (312) enclosing the slot (311).
5. The machine according to claim 3, wherein at least two slots (311) are provided, wherein at least two slots (311) are respectively used for guiding and sliding fit with two opposite sides of the heat insulation plate (35).
6. The machine according to any one of claims 1 to 5, wherein the heated test plate (34) is provided with a connecting column (36), the connecting column (36) passes through the heat retention block (33) and the housing (31), the connecting column (36) comprises a threaded section (361) extending out of the housing (31), the threaded section (361) is provided with a fastening nut (37), and the fastening nut (37) is screwed down to abut against the housing (31) so that the heat retention block (33) is clamped between the housing (31) and the heated test plate (34).
7. The heat insulation testing machine according to claim 6, wherein the heating device (3) and the cooling device (4) are arranged one above the other, the heating device (3) is arranged on the upper side, the driving device applies an upward acting force to the cooling device (4) to move the cooling device (4) upward, the pressure sensor (2) is arranged on the upper side of the housing (31), a sensor heat insulation member is arranged between the pressure sensor (2) and the housing (31), the sensor heat insulation member and the housing (31) are arranged at an interval from each other in the up-down direction, and the heating device (3) is fixed with the sensor heat insulation member through the upper end of the threaded section (361).
8. The heat insulation testing machine according to any one of claims 1 to 5, wherein the heating device (3) and the cooling device (4) are arranged one above the other, the heating device (3) being on the upper side, and the driving device applying an upward force to the cooling device (4) to move the cooling device (4) upward.
9. The heat insulation testing machine according to claim 8, wherein the pressure sensor (2) is disposed on the upper side of the housing (31), and a sensor heat insulator is disposed between the pressure sensor (2) and the housing (31), and the sensor heat insulator is spaced from the housing (31) up and down.
10. The machine according to any one of claims 1 to 5, characterised in that the heated test plate (34) is at least partially embedded in a heat-insulating block (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111004775.2A CN113702424B (en) | 2021-08-30 | Heat insulation testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111004775.2A CN113702424B (en) | 2021-08-30 | Heat insulation testing machine |
Publications (2)
| Publication Number | Publication Date |
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| CN113702424A true CN113702424A (en) | 2021-11-26 |
| CN113702424B CN113702424B (en) | 2024-05-10 |
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