CN102818647B - Quick-response thermocouple resistant to transient-state high pressure of explosion field - Google Patents
Quick-response thermocouple resistant to transient-state high pressure of explosion field Download PDFInfo
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- CN102818647B CN102818647B CN201210286594.8A CN201210286594A CN102818647B CN 102818647 B CN102818647 B CN 102818647B CN 201210286594 A CN201210286594 A CN 201210286594A CN 102818647 B CN102818647 B CN 102818647B
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- thermocouple
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- thermal insulation
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Abstract
The utility model discloses a quick-response thermocouple resistant to transient-state high pressure of an explosion field. The quick-response thermocouple is composed of a thermocouple wire, a thermal-insulating insulation paste, a connector, a pressing screw, a signal line and a housing. The quick-response thermocouple is characterized in that the thermocouple wire and the signal line are connected with each other through the connector to be arranged in the housing, and other positions of the housing are filled with the thermal-insulating insulation paste; after the thermal-insulating insulation paste is cured, the thermocouple is welded into a couple; and then the thermal-insulating insulation paste is filled to the end part of the thermocouple wire extending out of the shell body to form a conical structure, and the inclined plane of the conical structure causes shock-wave reflection to press to other directions outside a couple knob to reflect. The quick-response thermocouple has the significant advantages of simple structure, convenience in manufacture and short response time, cannot be damaged under the action of high shock waves, and is suitable for explosion fields of thermobaric bombs/fuel air explosives to use.
Description
Technical field
The invention belongs to sensor technical field, be specifically related to a kind of thermopair, particularly a kind of quick response thermopair being adapted under explosive field high voltage transient environment.
Background technology
Owing to producing high pressure effect and very long high-temperature effect of duration sharply after temperature and pressure, the quick-fried ammunition blast of cloud, be particularly suitable for tackling that buildings or fortification etc. are airtight, soft object and effective strength in semi-hermetic environment, become the study hotspot of each military power of the world.In the research of temperature and pressure, the quick-fried ammunition of cloud, production run, need to measure explosive field implode fireball temperature, the time space distribution of research blast fireball implode temperature, this assessment of injuring power for temperature and pressure, the quick-fried ammunition of cloud has great importance.
There are contact method and eyes with non-contact method for thermometric method at present.What contact method was measured main employing is thermopair, and the version master of thermopair has armored type thermopair and exposed type thermopair.As disclosing a kind of high-temperature wearable, Chinese patent ZL200420087876.6 responds fast thermopair; it is a kind of armored type thermopair, comprises the high hardness spray coating of protecting tube, thermopair, shell, set bolt, refractory seals pad, ultrafine-grained (UFG) microstructure.Its advantage is simple in structure, wear-resistant coating has increased the serviceable life of thermopair, its shortcoming is because there is protective sleeve the outside of thermopair, outside heat is first by the conduction of heat of outer jointing jacket, heat could be passed to the even knot of thermopair, the response time of thermopair is long, it is 5～6 seconds, for the quick-fried ammunition explosive field of temperature and pressure/cloud, the blast temperature duration that after-combustion effect produces is more than 100 millisecond of magnitude, therefore the thermopair of measuring for explosive field blast fireball response temperature, except claimed structure intensity high, can bear outside shock, also require the thermopair response time short, time constant is Millisecond, can respond fast the temperature variation of blast fireball." sensor application skill 141 examples " book that exposed galvanic couple hot in nature is published as Science Press, the very fast superfine thermopair of 65 thermal response speed in the 94th page, mentions a kind of thermopair thermo wires diameter 0.025mm, response times 25 μ s in literary composition.Its shortcoming is that thermo wires structural strength is low, and under the effect of explosive field transient impact ripple, thermo wires is easy to damage.
Summary of the invention
The object of the invention is to, the quick response thermopair of the resistance to high voltage transient of a kind of explosive field is provided, this thermopair is suitable for temperature and pressure/cloud bursting charge explosion environment, the effect of ability high voltage transient, and also thermopair is made simply, structural strength is high, the response time is short.
In order to realize above-mentioned task, the present invention takes following technical solution:
A quick response thermopair for the resistance to high voltage transient of explosive field, is characterized in that, formed by thermocouple wire, thermal insulation insulating gel, connector, pressure spiral shell, signal wire and shell, wherein:
Described connector is positioned at enclosure, connector one end connects signal wire, and the other end connects thermocouple wire, and enclosure is filled thermal insulation insulating gel by connector and thermocouple wire parcel, stretch out the thermocouple wire of shell except exposed portions serve, the conical structure parcel forming by thermal insulation insulating gel.
Thermocouple wire is that diameter is the WRe5/26 Wolfram rhenium heat electric couple silk of φ 0.2, and WRe5/26 Wolfram rhenium heat electric couple silk physical strength is large, and anti-embrittlement ability is strong.
The inorganic bond glue that thermal insulation insulating gel is made up of phosphoric acid liquid and cupric oxide, is characterized in that cohesive strength is high, solidify after shock-resistant, high-temperature behavior is relatively good.
Unitor is a pair of, and the right cylinder that Shi Yige center is stepped hole has respectively a threaded hole coordinating with pressure spiral shell on the external diameter of two ends, and thermocouple wire and signal wire penetrate from one end center pit of connector respectively, connect conducting by pressing spiral shell to compress.
There is the cylinder of stepped hole at shell Shi Yige center, and one end outer wall is made as hexagonal structure, and other end outer wall is cylinder, remainder is external thread, and pair of connectors is positioned at enclosure interior, and connector one end is used for connecting thermocouple wire, the other end is used for connecting signal wire, and remainder is filled thermal insulation insulating gel.Stretch out the thermocouple wire of shell except bared end, the conical structure being made up of thermal insulation insulating gel wraps up.The inclined-plane that conical structure forms changes shock reflection and presses action direction, and the shock wave power being subject to of thermopair thermo wires is reduced.
The quick response thermopair of the resistance to high voltage transient of explosive field of the present invention, its beneficial effect is embodied in the following aspects:
(1) simple in structure, use the inorganic bond glue being formed by phosphoric acid liquid and cupric oxide as thermal insulation insulating gel, this colloid preparation is simple, and set time is short, and it is simple, convenient to make.
(2) use at explosive field, the environment that is 13MPa at positive pressure of shock wave uses, and the even knot of thermopair does not have damaged, can effectively obtain measurement data.
Brief description of the drawings
Fig. 1 is the quick response thermocouple structure diagrammatic cross-section of the resistance to high voltage transient of explosive field of the present invention.
Fig. 2 thermocouple assay temperature curve.
Fig. 3 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, according to technical scheme of the present invention, the present embodiment provides the concrete structure of the quick response thermopair of the resistance to high voltage transient of a kind of explosive field, comprises thermocouple wire 1, thermal insulation insulating gel 2, connector 3, presses spiral shell 4, signal wire 5, shell 6.Wherein, connector 3 is positioned at shell 6 inside, connector 3 one end connect signal wire 5, the other end connects thermocouple wire 1, the inner thermal insulation insulating gel 2 of filling of shell 6 wraps up connector 3 and thermocouple wire 1, stretch out the thermocouple wire 1 of shell 6 except exposed portions serve, the conical structure parcel forming by thermal insulation insulating gel 2.
In the present embodiment, it is the WRe5/26 Wolfram rhenium heat electric couple silk of φ 0.2mm that thermocouple wire 1 is selected diameter.There is the cylinder of stepped hole at unitor 3 Shi Liangge centers, apart from the threaded hole that has respectively to coordinate with pressure spiral shell 4 on the external diameter of two ends certain distance.Pressing spiral shell 4 is screws of 4 formed objects.Two thermocouple wires 1 penetrate respectively the central small hole of unitor 3, press spiral shell 4 to compress thermocouple wire 1 by screw.Signal wire 5 is double wired conductors, penetrates respectively the large center pit of connector 3, presses spiral shell 5 to screw in threaded hole and compresses wire.Shell 6 is that center is the metal cartridge of through hole, and external diameter one end is made as hexagonal structure, and the remainder of external diameter is made as external thread, for connecting installation structure.The assembly that thermocouple wire 1, connector 3, pressure spiral shell 4, signal wire 5 form has six sides' center pit to penetrate from shell 6 one end, thermocouple wire 1 passes from the other end, connector 3 is approximately in the center of shell 6, and thermocouple wire 1 stretches out the about 8mm of length of shell 6 parts.Thermal insulation insulating gel 2 is coordinated and is formed by phosphoric acid and cupric oxide powder 1:1, formation colloid stirs, before solidifying, pour into shell 6 from thermocouple wire 1 traversing through end of shell 6, wait for after colloid solidification, the thermopair wire electrode 1 that stretches out thermal insulation insulating gel 2 is bent to half door type docking structure, be welded into even knot, and then again join thermal insulation insulating gel 2, and before solidifying, pour into thermopair place end face, form coniform shape.
The quick response thermopair of the resistance to high voltage transient of explosive field prepared by the present embodiment, send Shanxi Institute of Metrology's thermopair evaluating center, identify according to JJG576-1988 " work Wolfram rhenium heat electric couple ", result shows, measuring accuracy meets industrial thermocouple requirement.
Through qualification, the response time of the quick response thermopair of the resistance to high voltage transient of explosive field is less than 2 milliseconds.The rise time of the quick response thermopair by immersion method to the resistance to high voltage transient of this explosive field tests, and its response time is less than 2 milliseconds equally.
Applicant adopts the quick response thermopair of the resistance to high voltage transient of explosive field of the present invention, in the time that blasting pot carries out certain 2kg temperature and pressure medicine heat of detonation effect test, is 1800 DEG C at 1.3 meters of probe temperatures, and the temperature rise time is 34 milliseconds.Be 13MPa at 1.3 meters of with the positive pressure of shock wave peak value that piezoelectric type pressure sensor is measured, illustrate that the effect of withstanding shocks is strong, can adapt to temperature and pressure, the test of the quick-fried ammunition explosive field of cloud hyperbaric environment.The shock wave pressure curve that the temperature curve recording at distance 1.3 meters of of the quick-fried heart with the present invention when Fig. 2, Fig. 3 are respectively 2Kg Baric Explosive and pressure transducer device are measured.
Claims (2)
1. a quick response thermopair for the resistance to high voltage transient of explosive field, is characterized in that, formed by thermocouple wire (1), thermal insulation insulating gel (2), connector (3), pressure spiral shell (4), signal wire (5) and shell (6), wherein:
Described connector (3) is positioned at shell (6) inside, connector (3) one end connects signal wire (5), the other end connects thermocouple wire (1), the inner thermal insulation insulating gel (2) of filling of shell (6) is by connector (3) and thermocouple wire (1) parcel, the thermocouple wire (1) that stretches out shell (6) and thermal insulation insulating gel (2) bends to half door type docking structure, be welded into even knot, thermocouple wire (1) is except exposed portions serve, and the conical structure forming by thermal insulation insulating gel (2) wraps up;
Described thermocouple wire (1) equals the W-Re thermocouple wire of 0.2mm for diameter;
The thermal insulation material organic gel of described thermal insulation insulating gel (2) for being made into by phosphoric acid and cupric oxide.
2. the quick response thermopair of the resistance to high voltage transient of explosive field as claimed in claim 1, is characterized in that, described connector (3) is that center is the cylinder of stepped hole, respectively has a threaded hole coordinating with pressure spiral shell on the external diameter of two ends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210286594.8A CN102818647B (en) | 2012-08-13 | 2012-08-13 | Quick-response thermocouple resistant to transient-state high pressure of explosion field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210286594.8A CN102818647B (en) | 2012-08-13 | 2012-08-13 | Quick-response thermocouple resistant to transient-state high pressure of explosion field |
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| CN102818647A CN102818647A (en) | 2012-12-12 |
| CN102818647B true CN102818647B (en) | 2014-07-16 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103398792B (en) * | 2013-07-19 | 2015-05-20 | 中北大学 | Bullet wall temperature measuring device for use in high-overload environment and manufacturing method thereof |
| CN104535211B (en) * | 2014-12-19 | 2017-07-04 | 西安近代化学研究所 | A kind of electric thermo-couple protector that temperature test is responded suitable for explosive field fireball |
| CN106248283A (en) * | 2016-09-23 | 2016-12-21 | 西安近代化学研究所 | A kind of high-temperature-resistance pressure sensor being applicable to temperature and pressure explosive field |
| CN106768439A (en) * | 2016-11-23 | 2017-05-31 | 西安昆仑工业（集团）有限责任公司 | Gun muzzle transient temperature signal pickup assembly and method |
| CN106595891A (en) * | 2016-12-16 | 2017-04-26 | 贵州航天计量测试技术研究所 | Transient response high temperature sensor applied to complex environment |
| CN112697292A (en) * | 2020-12-17 | 2021-04-23 | 中国人民解放军63653部队 | Quick-response thermocouple for strong-impact dynamic load environment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201408088Y (en) * | 2009-02-13 | 2010-02-17 | 天津市中环温度仪表有限公司 | Multipoint leakage-resisting adjustable sheathed thermocouple |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0315729A (en) * | 1989-06-13 | 1991-01-24 | Miyamoto Kogyosho:Kk | Temperature measuring instrument for molten metal |
| CN2055252U (en) * | 1989-10-30 | 1990-03-28 | 西安近代化学研究所 | High pressure type high-temp. sensor with response of microseconds order |
| CN2058484U (en) * | 1989-11-22 | 1990-06-20 | 中国仪器仪表行业协会自动仪表专业协会温度仪表分会技术咨询部 | Explosion-proof connection box for thermocouple (thermal resistance) |
| US7891870B2 (en) * | 2008-04-29 | 2011-02-22 | Ngk Spark Plug Co., Ltd. | Temperature sensor element and method of manufacturing the same |
| CN202182773U (en) * | 2010-08-31 | 2012-04-04 | 浙江伦特机电有限公司 | Explosionproof type temperature sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201408088Y (en) * | 2009-02-13 | 2010-02-17 | 天津市中环温度仪表有限公司 | Multipoint leakage-resisting adjustable sheathed thermocouple |
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