CN113607539B - Anti-blocking device and method for heat flow sensor of static heating test of ablation test piece - Google Patents
Anti-blocking device and method for heat flow sensor of static heating test of ablation test piece Download PDFInfo
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- CN113607539B CN113607539B CN202110813831.0A CN202110813831A CN113607539B CN 113607539 B CN113607539 B CN 113607539B CN 202110813831 A CN202110813831 A CN 202110813831A CN 113607539 B CN113607539 B CN 113607539B
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- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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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
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Abstract
The invention provides an anti-blocking device and method for a heat flow sensor of an ablative test piece static heating test, comprising a separation plate, a reciprocating motion assembly, a heat insulation tool and a plurality of cleaning units; the heat insulation tool is provided with a first installation position and a second installation position, wherein the first installation position is used for installing a tested piece, and the second installation position is used for installing a heat flow sensor; the cleaning unit is fixedly arranged on the heat insulation tool through the 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 passes through a first gap and is installed on the heat insulation tool, and the isolation plate can move along the length direction of the isolation plate in the first gap. The invention solves the problem of effectively avoiding the blocking of the lens of the heat flow sensor 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 thermal strength tests, in particular to an anti-blocking device and method for a heat flow sensor for an ablative test piece static heating test.
Background
In the field of aerospace product ground test engineering, the heat test requirement of an ablative product is larger and larger, in the process of developing a static heating test of the ablative product, the ablative product is required to be heated by a certain heating means, and the heating quantity is regulated and controlled according to the feedback value of a heat flow sensor, so that the heat flow density loading environment required by the test is realized.
During the process of developing the static heating test of the ablative product, a large amount of smoke dust and flame are generated, the smoke dust is blocked at the lens of the heat flow sensor, the reality of heat flow density feedback is seriously affected, 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 is directly caused to fail when the deviation is more serious, and the success rate of one-time completion of the static heating test of the ablative product is reduced.
Patent document CN111272800 a discloses a modularized high heat flow static heating test device, comprising: the LED lamp comprises an upper insulating baffle, two side insulating baffles, quartz lamp tubes, a lamp tube conducting plate, a three-phase power amplifier, a water-cooling reflecting plate support, a heater support, two side lamp tube clamps and a base, wherein the lamp tube conducting plate is fixed on the two side insulating baffles through screws, the water-cooling reflecting plate and the water-cooling reflecting plate support are connected through screws, the quartz lamp tubes are arranged on the two side lamp tube clamps, wires at two ends of the quartz lamp tubes are connected to the lamp tube conducting plate, a cable of the three-phase power amplifier is connected to the lamp tube conducting plate, the base is fixedly connected with the water-cooling reflecting plate support, the upper insulating baffle is covered on the lamp tube 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, the solution still does not address the problem that smoke may clog 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 method for a heat flow sensor for a static heating test of an ablation test piece.
The invention provides an anti-blocking device of a heat flow sensor for an ablative test piece static heating test, which comprises a separation plate, a reciprocating motion assembly, a heat insulation tool and a plurality of cleaning units;
the heat insulation tool is provided with a first installation position and a second installation position, wherein the first installation position is used for installing a tested piece, and the second installation position is used for installing 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 isolation plate passes through a first gap and is installed on the heat insulation tool, the isolation plate can move in the first gap along the length direction of the isolation plate, and the length of the isolation plate meets the following requirements: 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 link;
the reciprocating 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 formed in one end of the cleaning unit.
Preferably, the liquid in the liquid cooling flow channel is water.
Preferably, the cleaning member is a high temperature resistant cleaning brush head.
Preferably, the number of the cleaning units is two, namely a first cleaner and a second cleaner, and the first cleaner and the second cleaner are symmetrically arranged along a second installation position;
when the isolation plate is driven to the farthest position from the reciprocating motor by the reciprocating assembly, the position of the isolation plate covering the second installation position is a first position; when the isolation plate is driven to the nearest position of the reciprocating motor by the reciprocating motion assembly, the position of the isolation plate covering the second installation position is a second position;
the first cleaner is spaced from the second cleaner by a distance not greater than the distance between the first position and the second position.
Preferably, the width of the partition plate is greater than 2 times the diameter of the second mounting location.
Preferably, the separator 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 1m.
The invention provides an anti-blocking method for a heat flow sensor of an ablative test piece static heating test, which comprises the following steps:
step 1: shielding the isolation plate on the front side of the heat flow sensor;
step 2: opening a reciprocating motion assembly to enable the reciprocating motion assembly to drive the isolation plate to reciprocate along the length direction of the isolation plate;
step 3: the cleaning unit performs a cleaning operation on the partition plate as the partition plate moves relative to a cleaning unit mounted on the heat insulating tool.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problem that the 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 the 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 once.
2. The liquid cooling runner is arranged in the cleaning unit, so that the cleaning unit can work normally in a high-temperature environment of a heating test.
3. According to the invention, through the mutual matching of the complex motion motor, the isolation plate and the cleaning unit, the function of automatically cleaning the isolation plate is achieved, the manpower is saved, and the working efficiency is improved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of the present invention.
The figure shows:
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 present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
The invention provides an anti-blocking device of a heat flow sensor for an ablative test piece static heating test, which is shown in figure 1 and comprises a separation plate 2, a reciprocating motion assembly, a heat insulation tool 4 and a plurality of cleaning units. The heat insulation tool 4 is provided with a first installation position 5 and a second installation position 6, the first installation position 5 is used for installing a tested piece 7, and the second installation position 6 is used for installing a heat flow sensor 8. In a preferred embodiment, the first mounting location 5 is located directly above the second mounting location 6, and the heat insulation fixture 4 may be mounted perpendicular to the ground, where the measuring surface of the heat flow sensor 8 is flush with the surface of the test piece 7.
The cleaning unit comprises a body 9 and a mounting end 10, the cleaning unit is fastened and mounted on the heat insulation tool 4 through the mounting end 10, in a preferred embodiment, the mounting end 10 is fastened and 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 component, and in a preferred example, the cleaning component is a high-temperature-resistant cleaning brush head; the cleaning brush head may also be electrically driven for better cleaning of the brush head. The cleaning member is used for cleaning the partition plate 2, and preventing dust generated during the test from contaminating the partition plate 2. The inside liquid cooling runner that sets up of cleaning unit, cleaning unit's one end is provided with inlet and liquid outlet. In a preferred embodiment, the liquid in the liquid cooling flow channel is water, and when the test is performed, the 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 being invalid due to overhigh temperature in the test process.
The isolation board 2 is installed on the heat insulation tool 4 through the first gap, and in a preferred embodiment, the width of the isolation board 2 is 2 times larger than the diameter of the second installation position 6. The isolation plate 2 can move along the length direction of the isolation plate 2 in the first gap, and the length of the isolation plate 2 meets the following requirements: when the isolation board 2 moves along the length direction, the isolation board 2 can always cover the second installation position 6, namely when the heat flow sensor is installed to the second installation position 6, when the isolation board 2 moves, a part of the isolation board 2 can always be blocked at the front side of the heat flow sensor 8, so that dust generated during test can be prevented from polluting the heat flow sensor lens. In a preferred embodiment, the separator 2 is a quartz glass plate. In another preferred embodiment, the separator 2 is a heat-resistant glass plate. One end of the isolation plate 2 is fixedly connected with the reciprocating motion assembly.
The reciprocating motion component 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 link 12; the reciprocating motor 3 is connected to one end of the partition plate 2 through the first connection member 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 not less than 1m.
In a preferred embodiment, as shown in fig. 1, the number of the cleaning units is two, namely, the first cleaner 1 and the second cleaner 11, and the first cleaner 1 and the second cleaner 11 are symmetrically arranged along the second installation position 6; when the isolation plate 2 is driven to the farthest position from the reciprocating motor 3 by the reciprocating assembly, the position of the isolation plate 2 covering the second installation position 6 is the first position; when the partition plate 2 is driven by the reciprocating assembly to the nearest position to the reciprocating motor 3, the position of the partition plate 2 covering the second installation position 6 is the second position. The area between the first position and the second position is a first area. The first cleaner 1 is spaced from the second cleaner 11 by a distance not greater 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 heating device for the test can be an infrared quartz lamp radiation heating device. The heating device is arranged right in front of the first installation position 5 and the second installation position 6, and the distances between the heating device and the tested piece 7 and the heat flow sensor 8 are equal, so that the heat flow density feedback value of the heat flow sensor 8 is always consistent with the heat flow density of the surface of the tested piece 7.
The reciprocating motor 3 drives the first connecting piece 12 to drive the isolation board 2 to reciprocate along the length direction of the isolation board 2, at this time, the isolation board 2 and the first cleaner 1 and the second cleaner 11 fixed on the heat insulation tool 4 generate relative displacement, and the high-temperature-resistant cleaning brush head on the first cleaner 1 and the second cleaner 11 cleans the isolation board 2, so that dust generated during a test is prevented from polluting the isolation board 2.
When the partition plate 2 moves from the farthest position from the reciprocating motor 3 to the nearest position from the reciprocating motor 3, the first cleaner 1 cleans a second area on the partition plate 2, and the second cleaner 11 cleans a third area on the partition plate 2; the second region is a region of the partition board 2 passing through the first cleaner 1 during the movement, and the third region is a region of the partition board 2 passing through the second cleaner 11 during the movement, and the second region and the third region constitute the first region, it should be noted that there is a possibility that the second region and the third region overlap in the present invention. That is, the position on the isolation board 2 corresponding to the second installation position 6 is always kept in a clean state in the process, and smoke dust generated during the test can not influence the heat flow sensor 8.
When the partition plate 2 moves from the nearest position to the reciprocating motor 3 to the farthest position from the reciprocating motor 3, the first cleaner 1 cleans a fourth area on the partition plate 2, and the second cleaner 11 cleans a fifth area on the partition plate 2; the fourth region is a region of the partition board 2 passing through the first cleaner 1 during the movement, and the fifth region is a region of the partition board 2 passing through the second cleaner 11 during the movement, and the fourth and fifth regions constitute the first region, it should be noted that there is a possibility that the fourth and fifth regions overlap in the present invention. That is, the position on the isolation board 2 corresponding to the second installation position 6 is always kept in a clean state in the process, and smoke dust generated during the test can not influence the heat flow sensor 8.
The invention also provides an anti-blocking method of the heat flow sensor for the static heating test of the ablation test piece, which comprises the following steps of;
step 1: shielding the isolation plate 2 on the front side of the heat flow sensor 8 to prevent dust generated during test from polluting the heat flow sensor lens;
step 2: opening a reciprocating motion assembly to enable the reciprocating motion assembly to drive the isolation plate 2 to reciprocate along the length direction of the isolation plate 2;
step 3: along with the movement of the isolation plate 2 relative to the cleaning unit arranged 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 dust generated during test.
In the description of the present application, it should 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 the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The heat flow sensor anti-blocking device for the static heating test of the ablative test piece is characterized by comprising a separation plate (2), a reciprocating motion assembly, a heat insulation tool (4) and a plurality of cleaning units;
the heat insulation tool (4) is provided with a first installation position (5) and a second installation position (6), the first installation position (5) is used for installing a tested piece (7), and the second installation position (6) is used for installing 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 reserved 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 isolation board (2) passes through a first gap and is installed on the heat insulation tool (4), the isolation board (2) can move along the length direction of the isolation board (2) in the first gap, and the length of the isolation 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 installation 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 type test piece static heating test heat flow sensor anti-blocking device according to claim 1, wherein the reciprocating motion assembly comprises a reciprocating motion motor (3) and a first connecting piece (12);
the reciprocating motor (3) is connected with one end of the isolation plate (2) through the first connecting piece (12).
3. The ablation type test piece static heating test heat flow sensor anti-blocking device according to claim 1, wherein a liquid cooling flow channel is arranged in the cleaning unit, and a liquid inlet and a liquid outlet are formed in one end of the cleaning unit.
4. The ablative test piece static heating test heat flow sensor blocking prevention device of claim 3, wherein the liquid in the liquid cooling flow channel is water.
5. The ablation type test piece static heating test heat flow sensor anti-blocking device according to claim 1, wherein the cleaning component is a high-temperature-resistant cleaning brush head.
6. The ablation type test piece static heating test heat flow sensor anti-blocking device according to claim 2, wherein the number of the cleaning units is two, namely a first cleaner (1) and a second cleaner (11), and the first cleaner (1) and the second cleaner (11) are symmetrically arranged along a second installation position (6);
when the isolation plate (2) is driven to the farthest position from the reciprocating motor (3) by the reciprocating motion assembly, the position of the isolation plate (2) covering the second installation position (6) is a first position; when the isolation plate (2) is driven to the nearest position to the reciprocating motor (3) by the reciprocating motion assembly, the position of the isolation plate (2) covering the second installation 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 type test piece static heating test heat flow sensor anti-blocking device according to claim 1, wherein the width of the isolation plate (2) is larger than 2 times of the diameter of the second installation position (6).
8. The ablation type test piece static heating test heat flow sensor anti-blocking device according to claim 1, wherein the isolation plate (2) is a heat-resistant glass plate.
9. The heat flow sensor anti-blocking device for the static heating test of the ablative test piece according to claim 1, wherein the distance between the reciprocating motion assembly and the heat insulation tool (4) is more than or equal to 1m.
10. An ablation type test piece static heating test heat flow sensor blocking prevention method, which is characterized by adopting the ablation type test piece static heating test heat flow sensor blocking prevention device as set forth in any one of claims 1-9, comprising the following steps:
step 1: shielding the isolation plate (2) at the front side of the heat flow sensor (8);
step 2: opening a reciprocating motion assembly to enable the reciprocating motion assembly to drive the isolation plate (2) to reciprocate along the length direction of the isolation plate (2);
step 3: along with the movement of the isolation plate (2) relative to a cleaning unit arranged on the heat insulation tool (4), the cleaning unit performs cleaning operation on the isolation plate (2).
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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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| 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 true CN113607539B (en) | 2023-07-14 |
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| 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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