CN110836733A - YHWE E type thermocouple temperature sensor - Google Patents
YHWE E type thermocouple temperature sensor Download PDFInfo
- Publication number
- CN110836733A CN110836733A CN201911178207.7A CN201911178207A CN110836733A CN 110836733 A CN110836733 A CN 110836733A CN 201911178207 A CN201911178207 A CN 201911178207A CN 110836733 A CN110836733 A CN 110836733A
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- China
- Prior art keywords
- thermocouple
- temperature
- nickel
- fixed
- thermocouple wire
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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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- 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
- G01K1/08—Protective devices, e.g. casings
-
- 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
Abstract
The invention discloses a YHWE E type thermocouple temperature sensor which comprises an installation seat and a temperature probe arranged on the installation seat, wherein the installation seat is fixed with a connecting pipe through a fixed installation plate, and the connecting pipe is fixedly connected with a sensor cable through a fixed tail sleeve; the temperature probe comprises 4 independent thermocouples, one end of the sensor cable is connected with 4 output plugs, and the other end of the sensor cable is connected with the fixed tail sleeve. The 4 independent temperature measuring ends are linearly arranged into a straight line to form a temperature detecting head, so that the temperature of 4 points at different positions can be measured simultaneously, the temperature can be measured more accurately, and the temperature at different positions can be measured simultaneously to obtain the temperature change. High-temperature-resistant high-purity alumina powder is filled in gaps in the probe, the mounting seat, the fixed mounting plate, the connecting pipe and the fixed tail sleeve, and the single-hole porcelain tube and the double-hole porcelain tube are fixed, so that the thermocouple temperature sensor is firm and vibration-resistant.
Description
Technical Field
The invention relates to the field of temperature sensors, in particular to a YHWE E type thermocouple temperature sensor.
Background
At present, a thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, and directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument). The appearance of various thermocouples is very different according to needs, but the basic structures of the thermocouples are almost the same, and the thermocouples are generally composed of main parts such as a thermode, an insulating sleeve protection tube, a junction box and the like, and are generally matched with a display instrument, a recording instrument and an electronic regulator for use. For the temperature detection of the air flow channel of the aircraft engine, the detection precision is required to reach level 1, and a temperature signal is transmitted to an engine test bed control system in a voltage parameter (mu V) mode. Meanwhile, due to the particularity of the airflow channel of the aero-engine, the required measurement range is large, for the aero-engine in flight work, a ground engine test bed is required to simulate the condition of the engine in flight work, and a temperature sensor is an important component of a test bed control system, so that the requirement for the measurement accuracy of the airflow channel of the aero-engine is very high, most thermocouple temperature sensors can only detect the temperature of one point or two points, and therefore a temperature sensor with higher measurement accuracy is required.
Disclosure of Invention
The present invention is directed to solve the above problems and provides a YHWE E-type thermocouple temperature sensor, which includes a mounting base and a temperature probe mounted on the mounting base, wherein the mounting base is fixed to a connection pipe through a fixing mounting plate, and the connection pipe is fixedly connected to a sensor cable through a fixing tail sleeve; the temperature probe comprises 4 independent thermocouples, one end of the sensor cable is connected with 4 output plugs, and the other end of the sensor cable is connected with the fixed tail sleeve.
As a further improvement of the above technical solution:
4 thermocouple wire shields are fixedly arranged on the temperature detection head vertically at equal intervals, a ceramic tube positioning block is arranged on the temperature detection head corresponding to the single-hole ceramic sleeve of the thermocouple wire, and 2 rows of 8 single-hole ceramic sleeves are arranged in the ceramic tube positioning block and are fixed; a double-hole ceramic sleeve is arranged in the thermocouple wire protective cover; the thermocouple comprises an anode nickel-chromium thermocouple wire and a cathode copper-nickel thermocouple wire, wherein one end of the anode nickel-chromium thermocouple wire penetrates through 1 single-hole porcelain bushing and is led out and then penetrates through one hole of a double-hole porcelain bushing; one end of the negative copper-nickel thermocouple wire penetrates through another hole of the double-hole ceramic sleeve after penetrating through another 1 single-hole ceramic sleeve and being led out; and penetrating the positive electrode nickel-chromium thermocouple wire and the negative electrode copper-nickel thermocouple wire out of the end points of the double-hole porcelain sleeve for welding.
The single-hole porcelain tube penetrates through the mounting seat, the fixed mounting plate, the connecting tube and the fixed tail sleeve.
The sensor cable comprises a thermocouple wire bundle and a metal wire woven wave-proof sleeve arranged on the periphery of the thermocouple wire bundle, the thermocouple wire bundle is 4 pairs of positive electrode nickel-chromium thermocouple wires and negative electrode copper-nickel thermocouple wires, and electric appliance heat-shrinkable sleeves are arranged on the peripheries of the positive electrode nickel-chromium thermocouple wires and the negative electrode copper-nickel thermocouple wires.
The metal wire woven wave-proof sleeve and the fixed tail sleeve are packaged and fixed through epoxy resin glue.
One end of the thermocouple wire bundle is connected with 4 output plugs in a positive-negative correspondence mode, and the other end of the thermocouple wire bundle is connected into the single-hole porcelain bushing in a one-to-one correspondence mode.
Gaps in the probe, the mounting seat, the fixed mounting plate, the connecting pipe and the fixed tail sleeve are filled with high-temperature-resistant high-purity alumina powder.
The end spot welding nodes of the positive electrode nickel-chromium thermocouple wire and the negative electrode copper-nickel thermocouple wire are spherical with the diameter of 0.8 mm.
The diameters of the anode nickel-chromium thermocouple wire and the cathode copper-nickel thermocouple wire are 0.3 mm.
Has the advantages that:
1. the 4 independent temperature measuring ends are linearly arranged into a straight line to form a temperature detecting head, so that the temperature of 4 points at different positions can be measured simultaneously, the temperature can be measured more accurately, and the temperature at different positions can be measured simultaneously to obtain the temperature change.
2. High-temperature-resistant high-purity alumina powder is filled in gaps in the probe, the mounting seat, the fixed mounting plate, the connecting pipe and the fixed tail sleeve, and the single-hole porcelain tube and the double-hole porcelain tube are fixed, so that the thermocouple temperature sensor is firm and vibration-resistant.
3. The mounting base 2 is used for fixing the temperature probe 1. The fixed mounting plate 3 is used for fixing the thermocouple temperature sensor on a mounting position of a temperature test reserved on the engine shell.
4. The connecting pipe 4 makes the fixed tail sleeve 5 and the high-temperature casing separate, so that the connecting pipe is not influenced by the high-temperature casing, and the interference to the anode nickel-chromium thermocouple wire and the cathode copper-nickel thermocouple wire is further reduced.
5. The thermocouple is E type, the tolerance is 1 grade, the temperature measuring range is-40 ℃ to +375 ℃, and the tolerance of 1 grade is +/-1.5 ℃.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a sectional view taken along line B-B of the present invention.
Fig. 3 is a view of the invention in direction a.
Reference numerals: 1. a temperature probe; 2. a mounting seat; 3. fixing the mounting plate; 4. a connecting pipe; 5. fixing a tail sleeve; 6. a sensor cable; 7. an output plug; 8. a single-hole porcelain bushing; 9. a double-hole porcelain bushing; 10. a thermocouple wire shield; 11. a positive electrode nickel-chromium thermocouple wire; 12. a negative copper-nickel thermocouple wire; 13. welding a node; 14. a porcelain tube positioning block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in FIGS. 1-3, the YHWE E type thermocouple temperature sensor of this example had a total length of 2 m. + -. 0.1 m. As shown in fig. 1, the YHWE E type thermocouple temperature sensor comprises a temperature probe 1, a mounting base 2, a fixed mounting plate 3, a connecting pipe 4, a fixed tail sleeve 5, a sensor cable 6 and 4 output plugs 7; the thermocouple also comprises 4 independent thermocouples, the hot end of each thermocouple is formed by electrically welding a positive electrode nickel-chromium thermocouple wire 11 and a negative electrode copper-nickel thermocouple wire 12 together, and the diameter of a welding joint 13 is about 0.8mm of a sphere. The hot ends of the thermocouples are respectively arranged in 4 thermocouple wire protective covers 10 and are sheathed with a double-hole porcelain bushing 9 for protection. As shown in figure 2, each group of thermocouple wires are led out from the double-hole porcelain sleeve 9 at the upper end of the shield and bent by 90 degrees, and then each positive electrode nickel-chromium thermocouple wire 11 and each negative electrode copper-nickel thermocouple wire 12 are respectively sheathed with a single-hole porcelain sleeve 8 for protection. The thermocouple wire of the single-hole porcelain bushing 8 sleeved on the quilt passes through the mounting base 2, the fixed mounting plate 3 and the connecting pipe 4 to the fixed tail sleeve 5. The thermocouple wires are an anode nickel-chromium thermocouple wire 11 and a cathode copper-nickel thermocouple wire 12, and the diameters of the anode nickel-chromium thermocouple wire 11 and the cathode copper-nickel thermocouple wire 12 are respectively 0.3 mm.
4 thermocouple wire shields 10 on the temperature detecting head 1 are perpendicular to the detecting head 1 and are fixedly arranged at equal intervals, the temperature detecting head 1 is provided with a porcelain tube positioning block 14 corresponding to a single-hole porcelain sleeve of the thermocouple wire, and 2 rows of 8 single-hole porcelain sleeves 8 are arranged in the porcelain tube positioning block and are fixed. The thermocouple wire protective cover 10 is internally provided with a double-hole porcelain bushing 9. The thermocouple comprises a positive electrode nickel-chromium thermocouple wire 11 and a negative electrode copper-nickel thermocouple wire 12. One end of the positive electrode nickel-chromium thermocouple wire penetrates through 1 single-hole ceramic bushing and then penetrates through one hole of the double-hole ceramic bushing after being led out; one end of the negative copper-nickel thermocouple wire penetrates through another hole of the double-hole ceramic sleeve after penetrating through another 1 single-hole ceramic sleeve and being led out. And (3) penetrating the positive electrode nickel-chromium thermocouple wire 11 and the negative electrode copper-nickel thermocouple wire 12 out of the end point of the double-hole porcelain sleeve 9 for welding.
The mounting base 2 is used for fixing the temperature probe 1. The fixed mounting plate 3 is used for fixing the thermocouple temperature sensor on a mounting position of a temperature test reserved on the engine shell. The connecting tube 4 separates the stationary boot 5 from the high temperature engine casing. After the thermocouple wires 11 and 12 are led out from the fixed tail sleeve 5, the high-temperature resistant porcelain tube is not sleeved any more. 8 thermocouple wires are bundled into a bundle and sleeved with a metal wire woven wave-proof sleeve; the wave-proof sleeve at one end of the sensor cable 6 is well contacted with the shell of the fixed tail sleeve 5, the port of the wave-proof sleeve is sealed and fixed by epoxy resin glue, the port of the wave-proof sleeve is fixed by an electric appliance heat-shrinkable sleeve at the other end of the sensor cable 6, and the thermocouple filament bundle is led out from the port and correspondingly connected with the pins marked by the positive and negative polarities of the output plug 7 according to the positive and negative polarities. The thermocouple wire is a national standard finished thermocouple wire, and the structure of the thermocouple wire is that a nickel-chromium thermocouple wire or a copper-nickel thermocouple wire is arranged inside the thermocouple wire, and then an insulating high-temperature-resistant flexible sheath is extruded.
High-temperature-resistant high-purity alumina powder is filled in the gaps in the temperature probe 1, the mounting seat 2, the fixed mounting plate 3, the connecting pipe 4 and the fixed tail sleeve 5, and the single-hole and double-hole porcelain sleeves are fixed, so that the thermocouple temperature sensor is firm and vibration-resistant.
The technical solutions of the embodiments of the present invention can be combined, and the technical features of the embodiments can also be combined to form a new technical solution.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A YHWE E type thermocouple temperature sensor is characterized in that: the temperature sensor comprises a mounting seat and a temperature detecting head arranged on the mounting seat, wherein the mounting seat is fixed with a connecting pipe through a fixed mounting plate, and the connecting pipe is fixedly connected with a sensor cable through a fixed tail sleeve; the temperature probe comprises 4 independent thermocouples, one end of the sensor cable is connected with 4 output plugs, and the other end of the sensor cable is connected with the fixed tail sleeve.
2. The YHWE type E thermocouple temperature sensor of claim 1, wherein: 4 thermocouple wire shields are fixedly arranged on the temperature detection head vertically at equal intervals, a ceramic tube positioning block is arranged on the temperature detection head corresponding to the single-hole ceramic sleeve of the thermocouple wire, and 2 rows of 8 single-hole ceramic sleeves are arranged in the ceramic tube positioning block and are fixed; a double-hole ceramic sleeve is arranged in the thermocouple wire protective cover; the thermocouple comprises an anode nickel-chromium thermocouple wire and a cathode copper-nickel thermocouple wire, wherein one end of the anode nickel-chromium thermocouple wire penetrates through 1 single-hole porcelain bushing and is led out and then penetrates through one hole of a double-hole porcelain bushing; one end of the negative copper-nickel thermocouple wire penetrates through another hole of the double-hole ceramic sleeve after penetrating through another 1 single-hole ceramic sleeve and being led out; and penetrating the positive electrode nickel-chromium thermocouple wire and the negative electrode copper-nickel thermocouple wire out of the end points of the double-hole porcelain sleeve for welding.
3. The YHWE type E thermocouple temperature sensor of claim 2, wherein: the single-hole porcelain bushing penetrates through the mounting seat, the fixed mounting plate, the connecting pipe and the fixed tail sleeve.
4. The YHWE type E thermocouple temperature sensor of claim 3, wherein: the sensor cable comprises a thermocouple wire bundle and a metal wire woven wave-proof sleeve arranged on the periphery of the thermocouple wire bundle, the thermocouple wire bundle is 4 pairs of positive electrode nickel-chromium thermocouple wires and negative electrode copper-nickel thermocouple wires, and electric appliance heat-shrinkable sleeves are arranged on the peripheries of the positive electrode nickel-chromium thermocouple wires and the negative electrode copper-nickel thermocouple wires.
5. The YHWE type E thermocouple temperature sensor of claim 4, wherein: the metal wire woven wave-proof sleeve and the fixed tail sleeve are packaged and fixed through epoxy resin glue.
6. The YHWE type E thermocouple temperature sensor of claim 5, wherein: one end of the thermocouple wire bundle is connected with 4 output plugs in a positive-negative correspondence mode, and the other end of the thermocouple wire bundle is connected into the single-hole porcelain bushing in a one-to-one correspondence mode.
7. The YHWE type E thermocouple temperature sensor of claim 6, wherein: the temperature probe, the mounting seat, the fixed mounting plate, the connecting pipe and the gap inside the fixed tail sleeve are filled with high-temperature-resistant high-purity alumina powder.
8. The YHWE type E thermocouple temperature sensor of claims 1-6, wherein: the end spot welding nodes of the positive electrode nickel-chromium thermocouple wire and the negative electrode copper-nickel thermocouple wire are spherical with the diameter of 0.8 mm.
9. The YHWE E-type thermocouple temperature sensor of claims 1-6, where the positive and negative nickel-chromium thermocouple wires have a diameter of 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911178207.7A CN110836733A (en) | 2019-11-27 | 2019-11-27 | YHWE E type thermocouple temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911178207.7A CN110836733A (en) | 2019-11-27 | 2019-11-27 | YHWE E type thermocouple temperature sensor |
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| Publication Number | Publication Date |
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| CN110836733A true CN110836733A (en) | 2020-02-25 |
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| CN201911178207.7A Pending CN110836733A (en) | 2019-11-27 | 2019-11-27 | YHWE E type thermocouple temperature sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229531A (en) * | 2020-09-22 | 2021-01-15 | 一汽奔腾轿车有限公司 | Novel air conditioner blows a temperature test of air outlet device |
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2019
- 2019-11-27 CN CN201911178207.7A patent/CN110836733A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229531A (en) * | 2020-09-22 | 2021-01-15 | 一汽奔腾轿车有限公司 | Novel air conditioner blows a temperature test of air outlet device |
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Application publication date: 20200225 |
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| WD01 | Invention patent application deemed withdrawn after publication |