CN107860481A - A kind of conventional liq engine wall warms thermo wires sensor fixing means - Google Patents
A kind of conventional liq engine wall warms thermo wires sensor fixing means Download PDFInfo
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- CN107860481A CN107860481A CN201710971337.0A CN201710971337A CN107860481A CN 107860481 A CN107860481 A CN 107860481A CN 201710971337 A CN201710971337 A CN 201710971337A CN 107860481 A CN107860481 A CN 107860481A
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- engine
- thermocouple wire
- wall
- fixing means
- sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention belongs to field of temperature measurement, and in particular to a kind of conventional liq engine wall warms thermo wires sensor fixing means.This method includes 1) thermocouple wire sensor installation thermal insulation layer；The thermal insulation layer includes plastic outer tube and fireproof asbestos cloth；2) thermocouple wire sensor is fixed with engine outer wall spot welding；3) thermocouple wire sensor and engine outer wall are glued using high-temp glue.It is big to solve the problems, such as that existing wall temperature thermocouple wire sensor takes off disconnected probability during experiment by the method for the present invention.
Description
Technical field
The invention belongs to field of temperature measurement, and in particular to a kind of conventional liq engine wall warm thermo wires sensor is fixed
Method.
Background technology
During the conventional ground liquid propellant rocket engine test over more than 30 years, wall temperature parameter acquiring environment can be shaken by force
The influence of dynamic, strong high temperature, heat-flash airflow field etc..
Traditional wall temperature parameter acquiring technique is that wall temperature thermocouple wire sensor points are welded on engine, when using one section
Between after through often occur part even most thermocouple wire sensor come off disconnect phenomenon.As conventional engine development is determined
Type, sampling observation, the mission requirements of delivered product, accurate survey of the design department to the wall temperature parameter overall process of engine hull-skin temperature
Amount requires more and more higher, especially thrust chamber outer wall temperature to the wall temperature on the analysis of heat transfer and evaporator, cooler, pressure inlet
Measurement in carrier rocket flight, there is very important effect to engine supercharging system.
Understood according to the incomplete statistics of test measurement wall temperature supplemental characteristic in the past 20 years, the de- disconnected phenomenon of thermocouple wire sensor exists
Between 20%~85%, though the unremitting effort during which through each side personnel gropes to test, this technical barrier still fails thoroughly to solve.
Therefore, how to work out a kind of sufficiently reliable wall temperature thermocouple wire sensor fixing means under above-mentioned severe environmental conditions, it is
A urgent problem in conventional ground engine test temperature parameter fields of measurement.
The content of the invention
In order to solve the problems, such as in background technology, the present invention proposes a kind of conventional engine experiment mesospore warm thermo wires and passed
Sensor fixing means, it is big to solve the problems, such as that existing wall temperature thermocouple wire sensor takes off disconnected probability during experiment.
The present invention concrete technical scheme be：
The invention provides a kind of conventional liq engine wall to warm thermo wires sensor fixing means, comprises the following steps：
1) thermocouple wire sensor installation thermal insulation layer；The thermal insulation layer includes plastic outer tube and fireproof asbestos cloth；
2) thermocouple wire sensor is fixed with engine outer wall spot welding；
3) thermocouple wire sensor and engine outer wall are glued using high-temp glue.
Furtherly, the step 2) is specifically：
2.1) two thermocouple wire ends in thermocouple wire sensor are subjected to spot welding；
2.2) by the position kneading glomeration solder joint or pie solder joint of an end of postwelding thermocouple wire sensor；
2.3) grinding process is carried out to spherical solder joint or pie solder joint and engine outer wall surface using sand paper；
2.4) spherical solder joint or pie solder joint, engine outer wall are cleaned using cotton ball soaked in alcohol；
2.5) spherical solder joint or pie solder joint are carried out a little with engine outer wall using the electric welding machine of capacitor charge and discharge principle
Weldering.
Furtherly, the step 1) is specifically：
1.1) first insulating sleeve is sleeved on two thermocouple wires；
1.2) fireproof asbestos cloth is wrapped on insulating sleeve again.
Furtherly, the step 3) is specifically：
3.1) by the appropriate solder joint for being applied to thermocouple wire sensor and being welded with engine outer wall of high-temp glue；
3.2) position for smearing thermocouple wire sensor high-temp glue with engine outer wall with adhesive tape again is fixed, and treats high temperature
Remove adhesive tape after adhesive curing.
In addition, in order to further fix thermocouple wire sensor, present invention additionally comprises step 4) auxiliary to fix；Specifically：
Thermocouple wire sensor is not carried out into auxiliary bonding in the part that engine outer wall is fixed using adhesive tape to fix；What auxiliary bonding was fixed
Point is low temperature part, and the fusing point of low temperature part is less than the fusing point of adhesive tape.
Specifically, high-temp glue is HT767A types, and its heat-resisting ability is more than 1000 DEG C.
Specifically, two thermocouple wire materials in thermocouple wire sensor are different, and one is nickel chromium triangle-constantan, one in addition
For nickel chromium triangle-nisiloy；And the diameter of two thermocouple wires is 0.3mm；The length of thermocouple wire is 1m.
Specifically, the 50 to 80mm of the length that the fireproof asbestos cloth is wound on insulating sleeve, its initial point wound
For the pad of thermocouple wire.
Specifically, insulating sleeve is made of the plastics of thermostable fluorine four；Its heat-resisting ability is more than 1000 DEG C.
The advantage of the invention is that：
1st, method of the invention is welded using the electric welding machine of capacitor charge and discharge principle and high-temp glue is glued collective effect
Mode thermocouple wire sensor is fixed in engine outer wall, make engine wall warm thermo wires sensor in installation process
More convenient, the reliability standard compared with former process is higher, and engine wall warms thermo wires sensor in experiment process
Middle expulsion rate is lower.
2nd, the present invention is existing first that two thermocouple wires are carried out into spot welding during welding, then passes through spherical solder joint and cake
Shape solder joint increases bonding area so that soldering reliability further improves.
3rd, method of the invention is set with insulating sleeve and fireproof asbestos cloth on thermocouple wire, is realized absolutely using insulating sleeve
Edge, Insulation Problems caused by high temperature burns insulating sleeve are avoided using fireproof asbestos cloth.
4th, fixing means of the invention realizes the new method of temperature survey in conventional liq engine test, for design portion
Door Correct Analysis grasps whether each work system of engine is normal, analysis and material choosing of the case temperature to clamp connection part intensity
Select and check, there is provided the reliable data of complete and accurate.
5th, the present invention is consolidated thermocouple wire sensor for the part progress auxiliary bonding that engine outer wall is fixed using adhesive tape
It is fixed so that the bonding of thermocouple wire sensor is more preferably firm.
Embodiment
The invention provides a kind of conventional liq engine wall to warm thermo wires sensor fixing means, and this method is specific real
Include following components during applying：
First, the selection of heat-resisting high-temp glue
Heat-resisting high-temp glue auxiliary cements method i.e. should be on the basis of origin welding heat thermo wires end face and at trailing wire, then adopts
The firm process of auxiliary sticking is carried out with heat-resisting high-temp glue, the wall temperature thermocouple wire sensor can be solved and be shaken by force because being put to the test
Dynamic swing pulls and takes off disconnected technical barrier.Concrete measure is：
Screen high-temperature plastic (>=1000 DEG C) and good insulation preformance, sticking strength and firm high-temp glue；
From various the material such as materials such as stainless steel, carbon steel, aluminium and thermocouple wire, fireproof asbestos cloth, thermostable fluorine of being stuck
The materials such as four insulating sleeves, metal carry out the auxiliary sticking checking test of each model high-temp glue；To the preproduction of high temperature glue
Carry out simulation heating, burning, roasting and pulling experiment, the effect for examining high-temp glue sticking strength.
2nd, the spot welding of wall temperature thermocouple wire sensor, splicing fixing means；
Due to the end points area only 0.3 of thermocouple wire being spot welded, it should undertake the measurement task of wall temperature, bear again about
Fixation is waved in anti-pulling of 1 meter of long wire under strong vibration, strong high fever warm air, and fixation of the invention solves this
Problem, it is specifically：
Step 1) thermocouple wire sensor installs thermal insulation layer；The thermal insulation layer includes plastic outer tube and fireproof asbestos cloth；
Insulating sleeve is first sleeved on two thermocouple wires by step 1.1)；
Fireproof asbestos cloth is wrapped on insulating sleeve by step 1.2) again.
Step 2) thermocouple wire sensor is fixed with engine outer wall spot welding；
Two thermocouple wire ends in thermocouple wire sensor are carried out spot welding by step 2.1)；
Step 2.2) is by the position kneading glomeration solder joint or pie solder joint of an end of postwelding thermocouple wire sensor；
Step 2.3) carries out grinding process using sand paper to spherical solder joint or pie solder joint and engine outer wall surface；
Step 2.4) is cleaned using cotton ball soaked in alcohol to spherical solder joint or pie solder joint, engine outer wall；
Step 2.5) is entered spherical solder joint or pie solder joint with engine outer wall using the electric welding machine of capacitor charge and discharge principle
Row spot welding.
Thermocouple wire sensor and engine outer wall are glued by step 3) using high-temp glue；
Step 3.1) is by the appropriate solder joint for being applied to thermocouple wire sensor and being welded with engine outer wall of high-temp glue；
The position that step 3.2) smears thermocouple wire sensor high-temp glue with adhesive tape with engine outer wall again is fixed, and treats
Remove adhesive tape after high temperature adhesive curing.
Step 4) auxiliary is fixed；
Thermocouple wire sensor is not carried out into auxiliary bonding in the part that engine outer wall is fixed using adhesive tape to fix；Auxiliary is viscous
It is low temperature part to connect fixed point, and the fusing point of low temperature part is less than the fusing point of adhesive tape.
3rd, measuring point inspection
Measuring point inspection is to another termination plug for the wall temperature thermocouple wire sensor that spot welding is pasted has been carried out into pole repeatedly
Property inspection, it is ensured that it is correct；Sand paper polishing and the clean processing on surface then are carried out to the position for being spot welded sticking veneer；In electricity
Weldering pastes the thermocouple wire sensor of position measuring point to being spot welded after pasting, implement the inspection system in good major and minor post.Really
Thermal protection thermo wires sensor is fixed, difficult for drop-off.
Implementation result：Using the method stationary engine wall temperature thermocouple wire sensor of the present invention, engine test is being carried out
When, the expulsion rate of thermocouple wire sensor drops to one by 20%~85% during testing in the past few decades and also not disconnected
Kilter, so as to obtain the accurate measurement of each wall temperature parameter overall process of engine.
Claims (9)
1. a kind of conventional liq engine wall warms thermo wires sensor fixing means, it is characterised in that comprises the following steps：
1) thermocouple wire sensor installation thermal insulation layer；The thermal insulation layer includes plastic outer tube and fireproof asbestos cloth；
2) thermocouple wire sensor is fixed with engine outer wall spot welding；
3) thermocouple wire sensor and engine outer wall are glued using high-temp glue.
2. conventional liq engine wall according to claim 1 warms thermo wires sensor fixing means, it is characterised in that institute
Stating step 2) is specifically：
2.1) two thermocouple wire ends in thermocouple wire sensor are subjected to spot welding；
2.2) by the position kneading glomeration solder joint or pie solder joint of an end of postwelding thermocouple wire sensor；
2.3) grinding process is carried out to spherical solder joint or pie solder joint, engine outer wall surface using sand paper；
2.4) spherical solder joint or pie solder joint and engine outer wall are cleaned using cotton ball soaked in alcohol；
2.5) spherical solder joint or pie solder joint are carried out by spot welding with engine outer wall using the electric welding machine of capacitor charge and discharge principle.
3. conventional liq engine wall according to claim 1 warms thermo wires sensor fixing means, it is characterised in that institute
Stating step 1) is specifically：
1.1) first insulating sleeve is sleeved on two thermocouple wires；
1.2) fireproof asbestos cloth is wrapped on insulating sleeve again.
4. conventional liq engine wall according to claim 1 warms thermo wires sensor fixing means, it is characterised in that institute
Stating step 3) is specifically：
3.1) by the appropriate solder joint for being applied to thermocouple wire sensor and being welded with engine outer wall of high-temp glue；
3.2) position for smearing thermocouple wire sensor high-temp glue with engine outer wall with adhesive tape again is fixed, and treats that high-temp glue is consolidated
Remove adhesive tape after change.
5. the conventional liq engine wall warm thermo wires sensor fixation side according to claim 1-4 any claims
Method, it is characterised in that：Also include step 4) auxiliary to fix；Specifically：Using adhesive tape by thermocouple wire sensor for engine outside
The part that wall is fixed carries out auxiliary bonding and fixed；The point that auxiliary bonding is fixed is low temperature part, and the fusing point of low temperature part is less than glue
The fusing point of band.
6. conventional liq engine wall according to claim 5 warms thermo wires sensor fixing means, it is characterised in that：Institute
It is HT767A types to state high-temp glue, and its heat-resisting ability is more than 1000 DEG C.
7. conventional liq engine wall according to claim 6 warms thermo wires sensor fixing means, it is characterised in that：Institute
The two thermocouple wire materials stated in thermocouple wire sensor are different, and one is nickel chromium triangle-constantan, and one is nickel chromium triangle-nisiloy in addition；And
The diameter of two thermocouple wires is 0.3mm；The length of thermocouple wire is 1m.
8. conventional liq engine wall according to claim 7 warms thermo wires sensor fixing means, it is characterised in that：Institute
The 50 to 80mm of the length that fireproof asbestos cloth is wound on insulating sleeve are stated, its initial point wound is the pad of thermocouple wire.
9. conventional liq engine wall according to claim 3 warms thermo wires sensor fixing means, it is characterised in that：Institute
Insulating sleeve is stated to be made of the plastics of thermostable fluorine four；Its heat-resisting ability is more than 1000 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971337.0A CN107860481B (en) | 2017-10-18 | 2017-10-18 | Fixing method for wall temperature thermocouple wire sensor of conventional liquid engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971337.0A CN107860481B (en) | 2017-10-18 | 2017-10-18 | Fixing method for wall temperature thermocouple wire sensor of conventional liquid engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107860481A true CN107860481A (en) | 2018-03-30 |
| CN107860481B CN107860481B (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710971337.0A Active CN107860481B (en) | 2017-10-18 | 2017-10-18 | Fixing method for wall temperature thermocouple wire sensor of conventional liquid engine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999784A (en) * | 1982-11-29 | 1984-06-08 | Sanyo Electric Co Ltd | Thermoelectric element |
| JPH10339674A (en) * | 1997-06-06 | 1998-12-22 | Omron Corp | Method for measuring temperature of soldering iron and soldering apparatus |
| CN106134439B (en) * | 2010-12-10 | 2014-03-19 | 上海空间推进研究所 | Thrust chamber is high temperature resistant temperature measuring equipment and temp measuring method thereof |
| CN204214562U (en) * | 2014-09-17 | 2015-03-18 | 中国航天科技集团公司第四研究院第四十一研究所 | For the temperature measuring equipment of solid propellant rocket |
| CN204988529U (en) * | 2015-03-30 | 2016-01-20 | 久茂自动化(大连)有限公司 | Pottery trade temperature measuring device |
-
2017
- 2017-10-18 CN CN201710971337.0A patent/CN107860481B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999784A (en) * | 1982-11-29 | 1984-06-08 | Sanyo Electric Co Ltd | Thermoelectric element |
| JPH10339674A (en) * | 1997-06-06 | 1998-12-22 | Omron Corp | Method for measuring temperature of soldering iron and soldering apparatus |
| CN106134439B (en) * | 2010-12-10 | 2014-03-19 | 上海空间推进研究所 | Thrust chamber is high temperature resistant temperature measuring equipment and temp measuring method thereof |
| CN204214562U (en) * | 2014-09-17 | 2015-03-18 | 中国航天科技集团公司第四研究院第四十一研究所 | For the temperature measuring equipment of solid propellant rocket |
| CN204988529U (en) * | 2015-03-30 | 2016-01-20 | 久茂自动化(大连)有限公司 | Pottery trade temperature measuring device |
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| CN107860481B (en) | 2020-05-29 |
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