CN104535211A - Thermocouple protecting device suitable for fireball response temperature testing in blast field - Google Patents
Thermocouple protecting device suitable for fireball response temperature testing in blast field Download PDFInfo
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- CN104535211A CN104535211A CN201410804879.5A CN201410804879A CN104535211A CN 104535211 A CN104535211 A CN 104535211A CN 201410804879 A CN201410804879 A CN 201410804879A CN 104535211 A CN104535211 A CN 104535211A
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- thermocouple
- protective housing
- fireball
- response temperature
- thermopair
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Abstract
The invention discloses a thermocouple protecting device suitable for fireball response temperature testing in a blast field. The thermocouple protecting device suitable for fireball response temperature testing in the blast field is mainly composed of a thermocouple, a protective shell, a microwave absorbing coating, a thermocouple installation hole, a wire trough and a fixing hole. The thermocouple protecting device suitable for fireball response temperature testing in the blast field is characterized in that the thermocouple is connected with the protective shell through the thermocouple installation hole, a thermocouple wire is arranged in a concave structure of the protective shell, a thermocouple signal line is lead out from the wire trough, the microwave absorbing coating is arranged on the internal wall surface of the concave structure of the protective shell, the device is fixed to an installation structure through the fixing hole, and the tail portion of the protective shell is right opposite to a blast center when the thermocouple protecting device is used. The thermocouple protecting device suitable for fireball response temperature testing in the blast field has the remarkable advantages that on the premise that the response time of a rapid response thermocouple resisting to transient high pressure is not influenced, the environmental adapting ability of the thermocouple is improved, the damage of high-speed fragments, high-pressure impact and explosion products to a thermocouple wire can be effectively resisted, and testing data can be obtained.
Description
Technical field
The invention belongs to sensor technical field, be specifically related to a kind of electric thermo-couple protector, particularly a kind of electric thermo-couple protector being applicable to the test of explosive field fireball response temperature.
Background technology
Due to the blast fireball formed after explosive charge, high-temperature gas product can cause hot destruction effect in various degree to target, and this hot destruction effect becomes study hotspot.The temperature of blast fireball is one of important determinative of hot destruction effect, and the inner response temperature of Obtaining Accurate explosive charge fireball and time space distribution thereof are studied significant for hot destruction.
The method that response temperature is measured is thermopair contact thermometry, because the explosion-induced loads time is fast, the fireball duration is level second, therefore test the response time requirement of thermopair higher, and instant of detonation exports high-pressure shocking wave, along with the high-speed motion of charge shell fragmentation, high to the requirement of strength of test thermopair.Chinese patent ZL201210286594.8 discloses the quick response thermopair under a kind of explosive field high voltage transient environment, it is a kind of exposed type thermopair, be made up of thermocouple wire, thermal insulation insulating gel, signal wire, housing etc., be characterized in that structure is simple, easy to make, response time is short, and thermopair is not damaged under higher shock wave, is adapted to pure explosion environment.But during range test, the fragmentation that charge shell is formed and explosion product is high in fireball internal motion speed, destructive power is large, high-pressure shocking wave drives ground, target range sandstone sling movement, very big to the failure probability of thermocouple wire.Under this harsh working condition, thermopair is often destroyed, and can not get response temperature data, can not meet test request.Therefore for the thermopair that blast fireball response temperature is measured, not only require that the thermopair response time reaches Millisecond, also require that thermopair is effectively protected, can test data be obtained under the destruction of bearing high-pressure shocking wave, high speed fragments and explosion product.The shortcoming of the quick response thermopair under this explosive field high voltage transient environment disclosed in patent ZL201210286594.8 is: thermopair thermo wires does not have protective device, is very easily destroyed by housing fragmentation, sandstone and high-pressure shocking wave when range test; Effective temperature survey curve can not be obtained, be difficult to meet explosive field fireball response temperature test request.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of electric thermo-couple protector being applicable to the test of explosive field fireball response temperature, the destruction of ability high speed fragments, high-pressure shocking wave and explosion product, and does not affect the features such as thermopair response time.
In order to realize above-mentioned technical requirement, the present invention takes following technical solution:
Be applicable to an electric thermo-couple protector for explosive field fireball response temperature test, it is characterized in that being made up of thermopair, protective housing, microwave absorbing coating, thermocouple mounting hole, metallic channel and fixed orifice.
The quick response thermopair of described thermopair resistance to high voltage transient of explosive field disclosed in patent ZL201210286594.8; be made up of thermocouple wire, thermal insulation insulating gel, signal wire and shell etc.; its outer shell outer wall is the external thread of diameter 10mm, is connected with protective housing.
Described protective housing profile is right cylinder, length 140mm, external diameter 50mm; head is elliposoidal concave inward structure, and the degree of depth is 35mm, along cylinder axis to arranging thermocouple mounting hole bottom concave inward structure; bottom thermocouple mounting hole, radially metallic channel is set, for drawing thermocouple signal line.The polishing of protective housing afterbody is diameter 50mm hemisphere, and afterbody is provided with fixed orifice.Containment vessel physical efficiency effectively protects the destruction of fragmentation, sandstone and shock wave; elliposoidal concave inward structure contributes to high temperature gas flow and enters protective housing head fast; thermocouple wire can be changed by temperature sensor rapidly, and afterbody semiglobe can reduce the interference of protective housing stream field.
Described thermocouple mounting hole is coaxial with protective housing, starts from bottom concave inward structure, internal diameter 10mm, degree of depth 50mm, and leading portion 35mm is internal thread, for coordinating stationary heat galvanic couple outer casing screw.
Described microwave absorbing coating is silicone rubber coating, and Silicone Rubber Coated is in protective housing concave structure inwall, and thickness is about 1mm, treats that it solidifies.Microwave absorbing coating wave impedance is less relative to protective housing, can reduce the reflected energy of shock wave, available protecting thermopair.
Described metallic channel is connected with bottom thermocouple mounting hole, wide 5mm, for drawing thermocouple signal line.
Described fixed orifice is that internal diameter 20mm is with female through hole, and distance protection housing afterbody 35mm, for connecting installation structure.
The electric thermo-couple protector of explosive field fireball response temperature test of the present invention, its beneficial effect is embodied in the following aspects:
(1) the quick response thermopair thermo wires of resistance to for explosive field high voltage transient is exposed in protective housing concave structure by this device, effectively can resist the destruction of housing fragmentation, sandstone and shock wave;
(2) when 120Kg is with metal shell TNT charging explosion field to use, the temperature survey curve that thermopair obtains is effective.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is thermocouple assay temperature curve of the present invention.
Fig. 3 is positive pressure of shock wave curve.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment
As shown in Figure 1, the preferred embodiments of the present invention comprise thermopair 1, protective housing 2, microwave absorbing coating 3, thermocouple mounting hole 4, metallic channel 5, fixed orifice 6.Wherein, described protective housing 2 outward appearance is right cylinder, and head is elliposoidal concave inward structure, and afterbody is hemispherical sanding body; Protective housing 2 arranges thermocouple mounting hole 4, metallic channel 5, fixed orifice 6 from the beginning to the end in turn; Thermocouple mounting hole 4 is coaxial with protective housing 2, and thermocouple mounting hole 4 arises from bottom protective housing 2 head concave inward structure, and terminate in metallic channel 5, thermocouple mounting hole 4 is connected with metallic channel 5; Metallic channel 5 and fixed orifice 6 center line and protective housing 2 axes normal; Thermopair 1 is fixed on protective housing 2 head by thermocouple mounting hole 4, and thermopair 1 thermo wires is exposed in protective housing 2 concave structure, and thermopair 1 signal wire is drawn from metallic channel 5; Microwave absorbing coating 3 is coated on protective housing 2 head concave structure internal face.
In the present embodiment; thermopair 1 signal wire is penetrated from thermocouple mounting hole 4; drawn by metallic channel 5 again; then thermopair 1 shell is rotated; be connected with thermocouple mounting hole 4 screw-internal thread fit by its external thread; should note protection thermopair 1 exposed thermo wires during rotation, until arrive bottom thermocouple mounting hole 4, now thermopair 1 about has 15mm length thereof to be arranged in protective housing 2 concave inward structure.Microwave absorbing coating 3 is silicon rubber, and silicon rubber is evenly coated on the concave structure inwall of protective housing 2, thickness is about 1mm.After its solidification, namely can be used for explosive field use.During use, protective housing 2 afterbody points to the quick-fried heart, is fixed by fixed orifice 6 and mounting structure.
Applicant adopts a kind of electric thermo-couple protector being applicable to the test of explosive field fireball response temperature of the present invention; when carrying out 120kg band metal shell TNT charging explosion thermal effect test at testing field; it is 700 DEG C at 9.8 meters of probe temperatures; ramp-up time is 80 milliseconds, is 0.57MPa at the positive pressure of shock wave peak value of 9.8 meters of shock wave pressure sensor measurements.Illustrate that the present invention can adapt to the fireball response temperature test under explosive field fragmentation, sandstone and strong shock wave environment.Fig. 2, Fig. 3 be respectively 120Kg be with metal shell TNT charging explosion time with the present invention at the temperature curve recorded apart from the quick-fried heart 9.8 meters of and shock wave pressure curve.
Claims (4)
1. one kind is applicable to the electric thermo-couple protector of explosive field fireball response temperature test, it is characterized in that, be made up of thermopair (1), protective housing (2), microwave absorbing coating (3), thermocouple mounting hole (4), metallic channel (5), fixed orifice (6);
Described protective housing (2) arranges thermocouple mounting hole (4), metallic channel (5), fixed orifice (6) from the beginning to the end in turn;
Thermocouple mounting hole (4) is coaxial with protective housing (2), thermocouple mounting hole (4) arises from bottom protective housing (2) head concave inward structure, terminate in metallic channel (5), thermocouple mounting hole (4) is connected with metallic channel (5); Metallic channel (5) and fixed orifice (6) center line and protective housing (2) axes normal;
Thermopair (1) is fixed on protective housing (2) head by thermocouple mounting hole (4), thermopair (1) thermo wires is exposed in protective housing (2) concave structure, and thermopair (1) signal wire is drawn from metallic channel (5);
Microwave absorbing coating (3) is coated on protective housing (2) head concave structure internal face.
2. a kind of electric thermo-couple protector being applicable to the test of explosive field fireball response temperature as described in right 1; it is characterized in that: described protective housing (2) is a right cylinder; the head of protective housing (2) is elliposoidal concave inward structure, and the afterbody of protective housing (2) is hemispherical sanding body.
3. a kind of electric thermo-couple protector being applicable to the test of explosive field fireball response temperature as described in right 1, is characterized in that: described microwave absorbing coating (3) is silicon rubber, and silicon rubber thickness is 1mm.
4. a kind of electric thermo-couple protector being applicable to the test of explosive field fireball response temperature as described in right 1, is characterized in that: described protective housing (2) is installed fixing by fixed orifice (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410804879.5A CN104535211B (en) | 2014-12-19 | 2014-12-19 | A kind of electric thermo-couple protector that temperature test is responded suitable for explosive field fireball |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410804879.5A CN104535211B (en) | 2014-12-19 | 2014-12-19 | A kind of electric thermo-couple protector that temperature test is responded suitable for explosive field fireball |
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| CN104535211A true CN104535211A (en) | 2015-04-22 |
| CN104535211B CN104535211B (en) | 2017-07-04 |
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| CN201410804879.5A Expired - Fee Related CN104535211B (en) | 2014-12-19 | 2014-12-19 | A kind of electric thermo-couple protector that temperature test is responded suitable for explosive field fireball |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353102A (en) * | 2015-12-08 | 2016-02-24 | 西安近代化学研究所 | Comprehensive effect evaluation method for explosion of thermobaric explosive in semi-closed tunnel |
| CN107101749A (en) * | 2017-06-14 | 2017-08-29 | 中国计量大学 | Fast-response thermocouple dynamic characteristic calibration system and method based on small-sized detonation |
| CN108020333A (en) * | 2017-11-27 | 2018-05-11 | 中国电子科技集团公司第四十八研究所 | A kind of temp probe and assembly method for aircraft |
| CN109530847A (en) * | 2018-11-20 | 2019-03-29 | 西安近代化学研究所 | A kind of quick response Wolfram rhenium heat electric couple welder |
| WO2020007162A1 (en) * | 2018-07-04 | 2020-01-09 | Wika Alexander Wiegand Se & Co. Kg | Thermocouple structure |
| US11287328B1 (en) * | 2020-08-27 | 2022-03-29 | The United States Of America As Represented By The Secretary Of The Navy | Thermocouple protection gauge |
| CN115855294A (en) * | 2023-02-22 | 2023-03-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Thermocouple with impact and overload resistance capability and preparation method and test method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353102A (en) * | 2015-12-08 | 2016-02-24 | 西安近代化学研究所 | Comprehensive effect evaluation method for explosion of thermobaric explosive in semi-closed tunnel |
| CN107101749A (en) * | 2017-06-14 | 2017-08-29 | 中国计量大学 | Fast-response thermocouple dynamic characteristic calibration system and method based on small-sized detonation |
| CN108020333A (en) * | 2017-11-27 | 2018-05-11 | 中国电子科技集团公司第四十八研究所 | A kind of temp probe and assembly method for aircraft |
| WO2020007162A1 (en) * | 2018-07-04 | 2020-01-09 | Wika Alexander Wiegand Se & Co. Kg | Thermocouple structure |
| CN109530847A (en) * | 2018-11-20 | 2019-03-29 | 西安近代化学研究所 | A kind of quick response Wolfram rhenium heat electric couple welder |
| US11287328B1 (en) * | 2020-08-27 | 2022-03-29 | The United States Of America As Represented By The Secretary Of The Navy | Thermocouple protection gauge |
| CN115855294A (en) * | 2023-02-22 | 2023-03-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Thermocouple with impact and overload resistance capability and preparation method and test method thereof |
| CN115855294B (en) * | 2023-02-22 | 2023-05-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Thermocouple with impact overload resistance and preparation method and test method thereof |
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| CN104535211B (en) | 2017-07-04 |
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