CN113607539A - Blocking prevention device and method for heat flow sensor in static heating test of ablation test piece - Google Patents
Blocking prevention device and method for heat flow sensor in static heating test of ablation test piece Download PDFInfo
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- CN113607539A CN113607539A CN202110813831.0A CN202110813831A CN113607539A CN 113607539 A CN113607539 A CN 113607539A CN 202110813831 A CN202110813831 A CN 202110813831A CN 113607539 A CN113607539 A CN 113607539A
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- 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
- G01N3/08—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
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Abstract
The invention provides an anti-blocking device and an anti-blocking method for a thermal flow sensor in a static heating test of an ablation test piece, wherein the anti-blocking device comprises a partition plate, a reciprocating motion assembly, a heat insulation tool and a plurality of cleaning units; the heat insulation device is provided with a first mounting position and a second mounting position, the first mounting position is used for mounting a tested piece, and the second mounting position is used for mounting a heat flow sensor; the cleaning unit is fixedly arranged on the heat insulation tool through a mounting end, a first gap is formed between the cleaning unit body and the heat insulation tool, and the cleaning unit is used for cleaning the isolation plate; the isolation plate penetrates through a first gap to be installed on the heat insulation assembly, and the isolation plate can move in the first gap along the length direction of the isolation plate. The invention solves the problem of effectively avoiding blocking of the heat flow sensor lens caused by smoke dust, and greatly improves the success rate of completing the static heating test of the ablation test piece at one time.
Description
Technical Field
The invention relates to the field of aerospace structure heat strength tests, in particular to an anti-blocking device and method for a heat flow sensor in a static heating test of an ablation test piece.
Background
In the field of aerospace product ground test engineering, the thermal test requirements of ablation products are more and more increased, in the process of carrying out the static heating test of the ablation products, the ablation products need to be heated by a certain heating means, and the heating quantity is regulated and controlled according to the feedback value of the heat flow sensor, so that the heat flow density loading environment required by the test is realized.
During the process of carrying out the static heating test of the ablation products, a large amount of smoke and flame are generated, the smoke and the flame can block the lens of the heat flow sensor, and the authenticity of heat flow density feedback is seriously influenced, so that the deviation of an actual heat environment and a theoretical heat environment is caused, the phenomenon of over-examination or under-examination is caused, the test failure is directly caused when the deviation is more serious, and the one-time completion success rate of the static heating test of the ablation products is reduced.
Patent document CN 111272800A discloses a modular high heat flow static heating test apparatus, including: the quartz lamp tube heat exchanger comprises an upper insulating baffle, two side insulating baffles, a quartz lamp tube, a lamp tube current conducting plate, a three-phase power amplifier, a water-cooling reflector support, a heater support, two side lamp tube clamps and a base, wherein the lamp tube current conducting plate is fixed on the two side insulating baffles through screws, the water-cooling reflector and the water-cooling reflector support are connected through screws, the quartz lamp tube is installed on the two side lamp tube clamps, wires at two ends of the quartz lamp tube are connected to the lamp tube current conducting plate, a cable of the three-phase power amplifier is connected to the lamp tube current conducting plate, the base is fixedly connected with the water-cooling reflector support, the upper insulating baffle covers the lamp tube current conducting plate, and the heater support is fixedly connected with the two side insulating baffles. Although this solution provides a high heat flux static heating test device, it does not solve the problem of smoke clogging at the lens of the heat flux sensor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an anti-blocking device and an anti-blocking method for a heat flow sensor in a static heating test of an ablation test piece.
The invention provides an anti-blocking device for a heat flow sensor in a static heating test of an ablation test piece, which comprises a partition plate, a reciprocating motion assembly, a heat insulation tool and a plurality of cleaning units, wherein the partition plate is provided with a first partition plate and a second partition plate;
the heat insulation device is provided with a first mounting position and a second mounting position, the first mounting position is used for mounting a tested piece, and the second mounting position is used for mounting a heat flow sensor;
the cleaning unit comprises a body and a mounting end, the cleaning unit is fixedly mounted on the heat insulation tool through the mounting end, a first gap is formed between the body and the heat insulation tool, and a cleaning component is arranged on the cleaning unit and used for cleaning the isolation plate;
the division board passes first clearance and installs on heat insulation frock, the division board can be in the first clearance along the length direction of division board removes, and the length of division board satisfies following requirement: when the isolation plate moves along the length direction, the isolation plate can always cover the second installation position;
one end of the isolation plate is fixedly connected with the reciprocating motion assembly, and the reciprocating motion assembly can drive the isolation plate to reciprocate along the length direction of the isolation plate.
Preferably, the reciprocating assembly comprises a reciprocating motor and a first connecting piece;
the reciprocating motion motor is connected with one end of the isolation plate through the first connecting piece.
Preferably, a liquid cooling runner is arranged in the cleaning unit, and a liquid inlet and a liquid outlet are arranged at one end of the cleaning unit.
Preferably, the liquid in the liquid cooling flow passage is water.
Preferably, the cleaning member is a high temperature resistant cleaning head.
Preferably, the number of the cleaning units is two, the cleaning units are respectively a first cleaner and a second cleaner, and the first cleaner and the second cleaner are symmetrically arranged along the second mounting position;
when the isolation plate is driven to the position farthest from the reciprocating motion motor by the reciprocating motion assembly, the position of the isolation plate covering the second installation position is the first position; when the isolation plate is driven to the position closest to the reciprocating motor by the reciprocating assembly, the position of the isolation plate covering the second mounting position is the second position;
the distance between the first cleaner and the second cleaner is not larger than the distance between the first position and the second position.
Preferably, the width of the isolation plate is greater than 2 times the diameter of the second mounting location.
Preferably, the insulating plate is a quartz glass plate or a heat-resistant glass plate.
Preferably, the distance between the reciprocating motion assembly and the heat insulation tool is more than or equal to 1 m.
The invention provides an anti-blocking method for a heat flow sensor in a static heating test of an ablation test piece, which comprises the following steps:
step 1: shielding a separation plate at the front side of the heat flow sensor;
step 2: starting a reciprocating assembly to enable the reciprocating assembly to drive the isolation plate to reciprocate along the length direction of the isolation plate;
and step 3: along with the movement of the isolation plate relative to the cleaning unit arranged on the heat insulation tool, the cleaning unit cleans the isolation plate.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problem that smoke dust generated in the process of carrying out the static heating test of the ablation test piece blocks the heat flow sensor to cause test failure, effectively avoids blocking of the heat flow sensor lens caused by the smoke dust, and greatly improves the success rate of completing the static heating test of the ablation test piece at one time.
2. The liquid cooling runner is arranged in the cleaning unit, so that the cleaning unit can normally work in a high-temperature environment of a heating test.
3. According to the invention, through the mutual cooperation of the reciprocating motion motor, the isolation plate and the cleaning unit, the function of automatically cleaning the isolation plate is achieved, the labor is saved, and the working efficiency is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides an anti-blocking device for a heat flow sensor in a static heating test of an ablation test piece, which comprises a partition plate 2, a reciprocating motion assembly, a heat insulation tool 4 and a plurality of cleaning units as shown in figure 1. Be provided with first installation position 5 and second installation position 6 on the thermal-insulated frock 4, first installation position 5 is used for the installation by test piece 7, and second installation position 6 is used for installing heat flow sensor 8. In a preferred embodiment, the first installation site 5 is located right above the second installation site 6, and the heat insulation tool 4 may be installed perpendicular to the ground, where the measurement surface of the heat flow sensor 8 is flush with the surface of the tested piece 7.
The cleaning unit comprises a body 9 and a mounting end 10, the cleaning unit is fixedly mounted on the heat insulation tool 4 through the mounting end 10, in a preferred embodiment, the mounting end 10 is fixedly connected with the heat insulation tool 4 through a connecting piece, and the connecting piece can be a screw and a screw. A first gap is formed between the body 9 and the heat insulation tool 4. The cleaning unit is provided with a cleaning part, and in a preferred example, the cleaning part is a high-temperature resistant cleaning brush head; the cleaning brush head can also be electrically driven for better cleaning of the brush head. The cleaning component is used for cleaning the isolation board 2 and preventing smoke dust generated in the test from polluting the isolation board 2. The inside liquid cooling runner that sets up of clean unit, the one end of clean unit is provided with inlet and liquid outlet. In a preferred embodiment, the liquid in the liquid cooling flow channel is water, and when a test is performed, cooling water flows in through the liquid inlet, flows in the liquid cooling flow channel, cools the cleaning component, and then flows out from the liquid outlet. The design of the liquid cooling runner can prevent the cleaning unit from failing due to overhigh temperature in the test process.
The isolation plate 2 penetrates through the first gap and is installed on the heat insulation tool 4, and in a preferred embodiment, the width of the isolation plate 2 is greater than 2 times of the diameter of the second installation position 6. The isolation plate 2 can move in the first gap along the length direction of the isolation plate 2, and the length of the isolation plate 2 meets the following requirements: when division board 2 removed along length direction, division board 2 can cover second installation position 6 all the time, promptly after heat flow sensor installs 6 to second installation positions division board 2 when removing, division board 2 partly can shelter from all the time in 8 front sides of heat flow sensor, the dirty heat flow sensor camera lens of smoke and dust that produces when preventing to test. In a preferred embodiment, the isolation plate 2 is a quartz glass plate. In another preferred embodiment, the insulation panel 2 is a heat-resistant glass panel. One end of the isolation plate 2 is tightly connected with the reciprocating motion assembly.
The reciprocating assembly can drive the isolation plate 2 to reciprocate along the length direction of the isolation plate 2. As shown in fig. 1, the reciprocating assembly includes a reciprocating motor 3 and a first connecting member 12; the reciprocating motor 3 is connected with one end of the isolation plate 2 through the first connecting piece 12. In a preferred embodiment, in order to avoid the adverse effect of the high temperature in the test on the reciprocating assembly, the distance between the reciprocating assembly and the heat insulation tool 4 is more than or equal to 1 m.
In a preferred embodiment, as shown in fig. 1, the number of the cleaning units is two, and the cleaning units are respectively a first cleaner 1 and a second cleaner 11, and the first cleaner 1 and the second cleaner 11 are symmetrically arranged along the second mounting position 6; when the isolation plate 2 is driven to the position farthest away from the reciprocating motor 3 by the reciprocating assembly, the position of the isolation plate 2 covering the second mounting position 6 is a first position; when the isolation plate 2 is driven to the nearest position from the reciprocating motor 3 by the reciprocating assembly, the position of the isolation plate 2 covering the second mounting position 6 is the second position. The area between the first position and the second position is a first area. The distance between the first cleaner 1 and the second cleaner 11 is not larger than the distance between the first position and the second position.
The working process of the invention is as follows:
when the test is carried out, the infrared quartz lamp radiation heating device can be selected as the heating device for the test. The heating device is placed right in front of the first mounting position 5 and the second mounting position 6, and the distances from the heating device to the tested piece 7 and the heat flow sensor 8 are equal, so that the feedback value of the heat flow density of the heat flow sensor 8 is always consistent with the surface heat flow density of the tested piece 7.
The reciprocating motion motor 3 drives the first connecting piece 12 drives the division board 2 along the length direction reciprocating motion of division board 2, at this moment, division board 2 with fix first cleaner 1 and second cleaner 11 on the thermal-insulated frock 4 produce relative displacement, and high temperature resistant cleaning brush head on first cleaner 1 and the second cleaner 11 cleans division board 2, prevents the dirty division board 2 of smoke and dust that produces during the experiment.
When the separation plate 2 moves from the position farthest from the reciprocating motor 3 to the position closest to the reciprocating motor 3, the first cleaner 1 cleans a second area on the separation plate 2, and the second cleaner 11 cleans a third area on the separation plate 2; the second area is the area of the partition board 2 passing through the first cleaner 1 during the movement, the third area is the area of the partition board 2 passing through the second cleaner 11 during the movement, and the second area and the third area constitute the first area. In the process, the position on the partition board 2 corresponding to the second mounting position 6 is always kept in a clean state, and smoke generated in the test can not influence the heat flow sensor 8.
When the partition board 2 moves from the position closest to the reciprocating motor 3 to the position farthest from the reciprocating motor 3, the first cleaner 1 cleans a fourth area on the partition board 2, and the second cleaner 11 cleans a fifth area on the partition board 2; the fourth area is an area on the partition plate 2 passing through the first cleaner 1 during the movement, the fifth area is an area on the partition plate 2 passing through the second cleaner 11 during the movement, and the fourth area and the fifth area constitute the first area. In the process, the position on the partition board 2 corresponding to the second mounting position 6 is always kept in a clean state, and smoke generated in the test can not influence the heat flow sensor 8.
The invention also provides an anti-blocking method of the ablation test piece static heating test heat flow sensor, and the anti-blocking device of the ablation test piece static heating test heat flow sensor comprises the following steps;
step 1: shielding the isolation plate 2 at the front side of the heat flow sensor 8 to prevent smoke dust generated in the test from polluting the lens of the heat flow sensor;
step 2: starting a reciprocating assembly to drive the isolation plate 2 to reciprocate along the length direction of the isolation plate 2 by the reciprocating assembly;
and step 3: along with the movement of the isolation plate 2 relative to the cleaning unit installed on the heat insulation tool 4, the cleaning unit performs cleaning operation on the isolation plate 2, namely, the isolation plate 2 is prevented from being polluted by smoke generated in the test.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An anti-blocking device for a heat flow sensor in a static heating test of an ablation test piece is characterized by comprising a partition plate (2), a reciprocating motion assembly, a heat insulation tool (4) and a plurality of cleaning units;
a first mounting position (5) and a second mounting position (6) are arranged on the heat insulation tool (4), the first mounting position (5) is used for mounting a tested piece (7), and the second mounting position (6) is used for mounting a heat flow sensor (8);
the cleaning unit comprises a body (9) and a mounting end (10), the cleaning unit is fixedly mounted on the heat insulation tool (4) through the mounting end (10), a first gap is formed between the body (9) and the heat insulation tool (4), and a cleaning component is arranged on the cleaning unit and used for cleaning the isolation plate (2);
the partition board (2) passes through a first gap to be installed on the heat insulation tool (4), the partition board (2) can move in the first gap along the length direction of the partition board (2), and the length of the partition board (2) meets the following requirements: when the isolation plate (2) moves along the length direction, the isolation plate (2) can always cover the second mounting position (6);
one end of the isolation plate (2) is fixedly connected with the reciprocating motion assembly, and the reciprocating motion assembly can drive the isolation plate (2) to reciprocate along the length direction of the isolation plate (2).
2. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 1, wherein the reciprocating component comprises a reciprocating motor (3) and a first connecting piece (12);
the reciprocating motion motor (3) is connected with one end of the isolation plate (2) through the first connecting piece (12).
3. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 1, wherein a liquid cooling flow channel is arranged in the cleaning unit, and a liquid inlet and a liquid outlet are arranged at one end of the cleaning unit.
4. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 3, wherein the liquid in the liquid cooling channel is water.
5. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 1, wherein the cleaning component is a high temperature resistant cleaning brush head.
6. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 2, wherein the number of the cleaning units is two, the cleaning units are respectively a first cleaner (1) and a second cleaner (11), and the first cleaner (1) and the second cleaner (11) are symmetrically arranged along the second mounting position (6);
when the isolation plate (2) is driven to the position farthest away from the reciprocating motor (3) by the reciprocating assembly, the position of the isolation plate (2) covering the second mounting position (6) is a first position; when the isolation plate (2) is driven to the position closest to the reciprocating motor (3) by the reciprocating assembly, the position of the isolation plate (2) covering the second mounting position (6) is a second position;
the distance between the first cleaner (1) and the second cleaner (11) is not larger than the distance between the first position and the second position.
7. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 1, wherein the width of the partition plate (2) is greater than 2 times the diameter of the second mounting position (6).
8. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 1, wherein the isolation plate (2) is a quartz glass plate or a heat-resistant glass plate.
9. The ablation test piece static heating test heat flow sensor anti-blocking device as claimed in claim 1, wherein the distance between the reciprocating motion assembly and the heat insulation tool (4) is more than or equal to 1 m.
10. An anti-blocking method for a heat flow sensor in a static heating test of an ablation test piece is characterized in that the anti-blocking device for the heat flow sensor in the static heating test of the ablation test piece is adopted, and comprises the following steps:
step 1: shielding a separation plate (2) at the front side of the heat flow sensor (8);
step 2: starting a reciprocating assembly to drive the isolation plate (2) to reciprocate along the length direction of the isolation plate (2) by the reciprocating assembly;
and step 3: along with the movement of the isolation plate (2) relative to a cleaning unit installed on the heat insulation tool (4), the cleaning unit performs cleaning operation on the isolation plate (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110813831.0A CN113607539B (en) | 2021-07-19 | 2021-07-19 | Anti-blocking device and method for heat flow sensor of static heating test of ablation test piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110813831.0A CN113607539B (en) | 2021-07-19 | 2021-07-19 | Anti-blocking device and method for heat flow sensor of static heating test of ablation test piece |
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| CN113607539B CN113607539B (en) | 2023-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308176A (en) * | 2021-12-30 | 2022-04-12 | 湖北三江航天红阳机电有限公司 | Adjustable radiant heating test device |
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| CN113607539B (en) | 2023-07-14 |
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