CN111175137A - Porous thermal insulation material pressure test device - Google Patents
Porous thermal insulation material pressure test device Download PDFInfo
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- CN111175137A CN111175137A CN201910996609.1A CN201910996609A CN111175137A CN 111175137 A CN111175137 A CN 111175137A CN 201910996609 A CN201910996609 A CN 201910996609A CN 111175137 A CN111175137 A CN 111175137A
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 239000012774 insulation material Substances 0.000 title claims description 7
- 239000011810 insulating material Substances 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 42
- 238000003825 pressing Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000003703 image analysis method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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Classifications
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- 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
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- 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
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- 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
- G01N3/04—Chucks
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- 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
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- 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
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- 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
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention discloses a pressure testing device for porous heat-insulating materials, which is characterized in that a light generator, a cylindrical concave lens and a detection board are arranged, the light generator emits a plurality of parallel beams of light to the porous heat-insulating material to be detected, the cylindrical concave lens can scatter the light emitted by the light generator, so that the distance between the beams of light irradiated on the detection board after scattering is increased, when the deformation of the porous heat-insulating material exceeds a deformation standard due to the fact that the applied pressure exceeds a bearing capacity, the light emitted by the light generator can be shielded, at least one light sensor on the detection board can not receive the scattered light, a processor can judge that the porous heat-insulating material exceeds a bearing range at the moment, a pressure testing structure is obtained, the problem that the direct light distance is too small and is difficult to set in the prior art is solved, and the problem that errors are easy to occur in measurement after the light sensor is arranged can be effectively reduced, compared with the existing visual image detection method, the method greatly saves the cost.
Description
Technical Field
The invention relates to the technical field of porous heat-insulating material testing, in particular to a pressure testing device for a porous heat-insulating material.
Background
The porous heat-insulating material achieves heat-insulating effect by utilizing the low thermal conductivity of gas in closed pores in a matrix, is one of the most widely and effectively applied materials in a heat-insulating material system, and needs to be tested for the pressure-bearing performance in the process of researching, developing and preparing a novel porous heat-insulating material so as to verify the feasibility and reliability of the practical application of the porous heat-insulating material in the market;
at present, two methods of manual judgment and image analysis monitoring are mostly adopted for pressure testing of porous heat-insulating materials, but the manual judgment too depends on the experience and visual inspection of workers, the deviation of a measuring result is large, the image analysis and detection method is high in manufacturing cost, a certain operation threshold is provided for the operators, and the cost of enterprises is increased undoubtedly.
Disclosure of Invention
In view of this, the present invention provides a pressure testing apparatus for porous heat insulating material.
The invention provides a porous heat-insulating material pressure testing device based on the above purpose, which comprises:
a frame;
the guide rail is arranged on the frame and is arranged along the vertical direction;
the fixture is arranged in the guide rail and used for fixing the porous heat-insulating material to be tested;
the lifting mechanism is arranged on the frame, is connected with the clamp and can drive the clamp to lift along the guide rail;
the pressing mechanism is arranged at the top of the clamp and is used for applying pressure to the porous heat-insulating material to be tested, which is fixed on the clamp;
the light generator is arranged on one side of the clamp and used for emitting a plurality of parallel light beams;
the cylindrical concave lens is arranged on one side opposite to the light generator and is used for scattering light rays emitted by the light generator;
the detection plate is arranged on one side, away from the light generator, of the cylindrical concave lens and used for detecting scattered light, and comprises a plate body and at least two light sensors, wherein the first light sensor is arranged at a position, irradiated on the plate body, of top light emitted by the light generator after being scattered by the cylindrical concave lens, and the second light sensor is arranged at a position, irradiated on the plate body, of bottom light emitted by the light generator after being scattered by the cylindrical concave lens;
and the processor is used for receiving the measurement result of the light sensor and sending a prompt signal when the light sensor cannot detect the scattered light due to the deformation of the porous heat-insulating material.
Preferably, the method further comprises the following steps:
the timer is connected with the processor;
the processor is also used for controlling the lifting mechanism to move, judging whether the light emitted by the light generator is shielded by the porous heat-insulating material to be detected or not according to the detection result of the light sensor, and controlling the timer to time the time when the porous heat-insulating material passes through the shielding point;
the calculation module is used for reading the timing result of the timer, reading the lifting speed of the lifting mechanism and calculating the lifting distance of the lifting mechanism within the timing time of the timer;
the processor is further used for adjusting the relative height difference between the clamp and the light generator by controlling the lifting mechanism according to the lifting distance obtained by the calculation module.
Preferably, the jig comprises:
the sliding block is arranged in the guide rail;
the fixing clamp is fixedly connected with the sliding block and used for clamping the porous heat insulation material to be tested;
and the pull buckle locking mechanism is fixed on the sliding block and used for locking the sliding block in the guide rail.
Preferably, a connecting rod is fixedly connected among the detection plate, the cylindrical concave lens and the light generator.
Preferably, the processor is further configured to read the application pressure of the pressure applying mechanism and control the operation of the pressure applying mechanism.
Preferably, the pressing mechanism is a hydraulic pressure tester.
Preferably, the light generator is an infrared light generator.
From the above, the pressure testing device for the porous heat-insulating material provided by the invention has the advantages that the light generator, the cylindrical concave lens and the detection board are arranged, the light generator emits a plurality of parallel light beams to the porous heat-insulating material to be detected, the cylindrical concave lens can scatter the light beams emitted by the light generator, so that the distance between the light beams irradiated on the detection board after scattering is increased, when the deformation of the porous heat-insulating material exceeds the deformation standard due to the fact that the applied pressure exceeds the bearing capacity, the light beams emitted by the light generator can be shielded, at least one light sensor on the detection board can not receive the scattered light beams, the processor can judge that the porous heat-insulating material exceeds the bearing range at the moment, the pressure testing structure is obtained, and the problem that the arrangement is difficult due to the fact that the direct light beam interval is too small in the prior art is solved, because the cylindrical concave lens can scatter the light emitted by the light generator, the irradiation range after scattering is enlarged, the problem that errors are easy to occur in measurement after the light sensor is arranged can be effectively solved, and the cost is greatly saved compared with the existing visual image detection method.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic top view of a porous insulating material according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a light ray propagation diagram of a light ray generator according to an embodiment of the present invention;
fig. 4 is a schematic diagram of data communication according to an embodiment of the present invention.
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 specific embodiments and the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
A pressure testing device for porous heat-insulating materials 11 comprises a frame and a guide rail 1 arranged on the frame in a vertical direction, wherein a clamp 2 used for fixing the porous heat-insulating materials 11 to be tested is arranged in the guide rail 1, a lifting mechanism 3 is also arranged on the frame, the lifting mechanism 3 is connected with the clamp 2 and can drive the clamp 2 to lift along the guide rail 1, a pressing mechanism 4 is arranged at the top of the clamp 2 and used for applying pressure to the porous heat-insulating materials 11 to be tested and fixed on the clamp 2, a light generator 5 is arranged on one side of the clamp 2 and used for emitting a plurality of parallel beams of light, a cylindrical concave lens 6 is arranged on one side opposite to the light generator 5 and used for scattering the light emitted by the light generator 5, a detection board 7 is arranged on one side of the cylindrical concave lens 6 and used for detecting the scattered light, and a light source is arranged, the detection plate 7 comprises a plate body 71 and at least two light sensors 72, wherein the first light sensor 72 is arranged at a position where top light rays emitted by the light generator 5 irradiate on the plate body 71 after being scattered by the cylindrical concave lens 6, the second light sensor 72 is arranged at a position where bottom light rays emitted by the light generator 5 irradiate on the plate body 71 after passing through the cylindrical concave lens 6, a processor is further arranged in the testing device and used for receiving a measuring structure of the light sensor 72, and when the light sensor 72 cannot detect the scattered light rays due to deformation of the porous heat insulating material 11, a prompt signal is sent.
The invention adopts the light generator 5, the cylindrical concave lens 6 and the detection plate 7, the light generator 5 emits a plurality of parallel light beams to the porous heat-insulating material 11 to be detected, the cylindrical concave lens 6 can scatter the light beams emitted by the light generator 5, so that the distance between the light beams irradiated on the detection plate 7 after scattering is increased, when the porous heat-insulating material 11 deforms above a deformation standard due to the fact that the applied pressure exceeds the bearing capacity, the light beams emitted by the light generator 5 can be shielded, so that at least one light sensor 72 on the detection plate 7 can not receive the scattered light beams, the processor can judge that the porous heat-insulating material 11 exceeds the bearing range at the moment, the pressure test structure is obtained, the problem that the arrangement is difficult due to the fact that the direct light beam distance is too small in the prior art is solved, and the light beams emitted by the light generator 5 can be scattered by the cylindrical concave lens 6, the irradiation range after scattering is enlarged, the problem that errors are easily caused in measurement after the light sensor 72 is arranged can be effectively solved, and the cost is greatly saved compared with the existing visual image detection method.
As an embodiment, the pressure testing device further comprises a timer, the processor is further configured to control the lifting mechanism 3 to move, and according to the detection result of the light sensor 72, determine whether the light emitted by the light generator 5 is blocked by the porous heat-insulating material 11 to be detected, and control the timer to time the time when the porous heat-insulating material 11 passes through the blocking point; the processor is also used for adjusting the relative height difference between the clamp 2 and the light generator 5 by controlling the lifting mechanism 3 according to the lifting distance obtained by the calculation module.
By arranging the timer and the calculating module, the time that the porous heat insulating material 11 passes a certain point of the light emitted by the light generator 5 can be conveniently counted, such as top light or bottom light, the processor can control the timer to count the time according to the first light sensor 72 or the second light sensor 72, so as to calculate the thickness of the porous heat insulating material 11, the deformation standard of the porous heat insulating material 11 with the thickness is different due to different compression resistance of the porous heat insulating material 11 with different thicknesses and different deformation standard in a pressure test, the processor can obtain the deformation standard of the porous heat insulating material 11 with the thickness according to the thickness of the porous heat insulating material 11, and the lifting mechanism 3 moves the porous heat insulating material 11, so that the height difference of the light from the bottom of the porous heat insulating material 11 to the certain point of the light generator 5 is equal to the deformation standard, such as top light and bottom light.
As an implementation mode, the fixture 2 comprises a sliding block installed in the guide rail 1, a fixing clamp and a trigger locking mechanism are fixedly connected to the sliding block, the fixing clamp is used for clamping the porous heat-insulating material 11 to be tested, and the trigger locking mechanism is used for locking the sliding block in the guide rail 1.
As an embodiment, a connecting rod is fixedly connected between the detection plate 7, the cylindrical concave lens 6 and the light generator 5, and the connecting rod can be arranged at the side surfaces of the detection plate 7, the cylindrical concave lens 6 and the light generator 5 to avoid measurement errors caused by vibration.
In one embodiment, the processor is further configured to read the pressure applied by the pressure applying mechanism 4 and control the operation of the pressure applying mechanism 4, and when the processor determines that the actual deformation amount of the porous heat insulating material 11 reaches the deformation standard, the processor may automatically read the pressure applied by the pressure applying mechanism 4 to obtain a pressure test structure, and stop the pressure applying mechanism 4 to prevent the applied pressure from increasing further and causing a safety hazard.
In one embodiment, the pressing mechanism 4 is a hydraulic pressure tester.
As an embodiment, the light generator 5 may be an infrared light generator.
When the pressure testing device for the porous heat-insulating material 11 disclosed by the invention is used, firstly, the clamp 2 is used for fixing the porous heat-insulating material 11 to be tested in the clamp 2, then the clamp 2 is driven by the lifting mechanism 3 to be lifted to the top of the guide rail 1 or at least higher than the position of the top light rays emitted by the light generator 5, all parallel light rays emitted by the light generator 5 are not blocked by the porous heat-insulating material 11, can be irradiated on the detection plate 7 after being scattered by the cylindrical concave lens 6 and irradiated on the position of each light ray sensor 72, then the lifting mechanism 3 is started again to drive the clamp 2 to descend, when the porous heat-insulating material 11 descends to block the top light rays emitted by the light generator 5, the light rays emitted by the light ray generator 5 cannot be detected by the first light ray sensors 72, and the processor reads the detection result, controlling the timer to start timing, then continuing to drive the clamp 2 to descend by the lifting mechanism 3 until the porous heat-insulating material 11 moves to a position where the light emitted by the light generator 5 is not blocked, detecting the light emitted by the light generator 5 by the first light sensor 72, reading the detection result by the processor, controlling the timer to stop timing, calculating the thickness of the porous heat-insulating material 11 by the calculation module according to the timing time of the timer, namely the world used by the whole porous heat-insulating material 11 passing through the top light of the light generator 5, according to the lifting speed of the lifting mechanism 3, calculating the deformation standard of the porous heat-insulating material 11 during pressure test because the compression resistance of the porous heat-insulating materials 11 with different thicknesses is different, obtaining the deformation standard of the porous heat-insulating material 11 with the thickness according to the thickness of the porous heat-insulating material 11 by the processor, moving the porous heat-insulating material 11 by the, the height difference between the bottom of the porous heat insulating material 11 and the bottom light of the light generator 5 is equal to the deformation standard, then the clamp 2 is locked through the locking mechanism, the pressing mechanism 4 is started to apply pressure to the porous heat insulating material 11 to be tested, the applied pressure is gradually increased, when the pressure applied by the pressing mechanism 4 exceeds the pressure which can be borne by the porous heat insulating material 11, the porous heat insulating material 11 can generate deformation exceeding the deformation standard, the deformation of the porous heat insulating material 11 can shield the bottom light of the light sensor 72, so that the second light sensor 72 cannot receive the light emitted by the light generator 5, after the processor reads the measurement result, the processor judges that the second light sensor 72 cannot detect the scattered light due to the deformation of the porous heat insulating material 11 and sends a prompt signal, in one embodiment, the processor can also read the pressure data of the pressing mechanism 4 at the moment, and controls the pressurizing mechanism 4 to stop pressurizing, thereby facilitating the user to know the pressure test result of the porous heat insulating material 11.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
In addition, well known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures for simplicity of illustration and discussion, and so as not to obscure the invention. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the invention, and also in view of the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the present invention is to be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the invention, it should be apparent to one skilled in the art that the invention can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures, such as Dynamic RAM (DRAM), may use the discussed embodiments.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A porous thermal insulation material pressure test device is characterized by comprising:
a frame;
the guide rail is arranged on the frame and is arranged along the vertical direction;
the fixture is arranged in the guide rail and used for fixing the porous heat-insulating material to be tested;
the lifting mechanism is arranged on the frame, is connected with the clamp and can drive the clamp to lift along the guide rail;
the pressing mechanism is arranged at the top of the clamp and is used for applying pressure to the porous heat-insulating material to be tested, which is fixed on the clamp;
the light generator is arranged on one side of the clamp and used for emitting a plurality of parallel light beams;
the cylindrical concave lens is arranged on one side opposite to the light generator and is used for scattering the light emitted by the light generator;
the detection plate is arranged on one side, away from the light generator, of the cylindrical concave lens and used for detecting scattered light, and comprises a plate body and at least two light sensors, wherein the first light sensor is arranged at a position, irradiated on the plate body, of top light rays emitted by the light generator after being scattered by the cylindrical concave lens, and the second light sensor is arranged at a position, irradiated on the plate body, of bottom light rays emitted by the light generator after being scattered by the cylindrical concave lens;
and the processor is used for receiving the measurement result of the light sensor and sending a prompt signal when the light sensor cannot detect the scattered light due to the deformation of the porous heat-insulating material.
2. The porous insulating material pressure test apparatus according to claim 1, further comprising:
a timer connected to the processor;
the processor is also used for controlling the lifting mechanism to move, judging whether the light rays emitted by the light generator are shielded by the porous heat-insulating material to be detected or not according to the detection result of the light ray sensor, and controlling the timer to time the time when the porous heat-insulating material passes through the shielding point;
the calculation module is used for reading the timing result of the timer, reading the lifting speed of the lifting mechanism and calculating the lifting distance of the lifting mechanism within the timing time of the timer;
the processor is further used for adjusting the relative height difference between the clamp and the light generator by controlling the lifting mechanism according to the lifting distance obtained by the calculation module.
3. The porous insulating material pressure test apparatus according to claim 1, wherein the jig comprises:
the sliding block is arranged in the guide rail;
the fixing clamp is fixedly connected with the sliding block and used for clamping the porous heat insulation material to be tested;
and the pull buckle locking mechanism is fixed on the sliding block and used for locking the sliding block in the guide rail.
4. The porous insulation material pressure test device according to claim 1, wherein a connecting rod is fixedly connected between the detection plate, the cylindrical concave lens and the light generator.
5. The porous insulating material pressure testing apparatus of claim 1, wherein the processor is further configured to read the applied pressure of the pressure applying mechanism and control the operation of the pressure applying mechanism.
6. The porous insulating material pressure test apparatus according to claim 1, wherein the pressing mechanism is a hydraulic pressure tester.
7. The porous insulation material pressure test device according to claim 1, wherein the light generator is an infrared light generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910996609.1A CN111175137A (en) | 2019-10-19 | 2019-10-19 | Porous thermal insulation material pressure test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910996609.1A CN111175137A (en) | 2019-10-19 | 2019-10-19 | Porous thermal insulation material pressure test device |
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| CN111175137A true CN111175137A (en) | 2020-05-19 |
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| CN201910996609.1A Pending CN111175137A (en) | 2019-10-19 | 2019-10-19 | Porous thermal insulation material pressure test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896378A (en) * | 2020-08-06 | 2020-11-06 | 亳州联滔电子有限公司 | Connector tension testing device |
| CN112229720A (en) * | 2020-10-10 | 2021-01-15 | 浙江德易精密机械有限公司 | Anti-deformation detection device for shell for motor production |
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