CN115752784A - Self-updating quick temperature measuring thermocouple with roll-shaped laminated structure - Google Patents
Self-updating quick temperature measuring thermocouple with roll-shaped laminated structure Download PDFInfo
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- CN115752784A CN115752784A CN202211443962.5A CN202211443962A CN115752784A CN 115752784 A CN115752784 A CN 115752784A CN 202211443962 A CN202211443962 A CN 202211443962A CN 115752784 A CN115752784 A CN 115752784A
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Abstract
The invention discloses a self-updating rapid temperature measuring thermocouple with a roll-shaped laminated structure, which comprises a sheet material wound into a roll-shaped structure, wherein the sheet material is formed by laminating and pressing a positive material layer and a negative material layer together. The invention meets the requirement of temperature measurement and quick response, has the characteristics of small volume, small thermal constant and self-updating in the high-speed wear process, and has wide application prospect and great practical significance in the occasion of testing the quick temperature of the wear surface.
Description
Technical Field
The invention particularly relates to a self-updating rapid temperature measuring thermocouple of a roll-shaped laminated structure.
Background
The temperature sensor can realize the representation of temperature, and the temperature sensor can be divided into a non-contact type and a contact type.
The non-contact temperature test has temperature test means of laser, infrared and ultrasonic temperature. With infrared thermometry being the most common. In nature, all objects with a temperature higher than absolute zero continuously emit infrared radiation energy to the surrounding space. The magnitude of the infrared radiation energy of an object and its distribution by wavelength are very closely related to its surface temperature. The infrared energy radiated by the object to be measured is converged on the sensitive surface of the detector through the optical system, and the detector converts the radiation energy irradiated on the sensitive surface into an electric signal which can be measured.
Thermocouples, thermistors, temperature paper/paint, platinum resistors and temperature ICs are common contact temperature sensors. A thermocouple is a widely used contact temperature sensor. The principle is based on the Seebeck effect discovered in 1821, that is, two different conductors or semiconductors form a loop, and the two ends of the loop are connected with each other; as long as the temperatures at the two nodes are different, current is generated in the loop, namely thermoelectric potential exists in the loop. The K-type thermocouple has the advantages of good linearity, large thermoelectromotive force, high sensitivity, good stability and uniformity, strong oxidation resistance, convenient use, wide temperature measurement range, high temperature measurement precision, low price and the like.
However, if the surface to be tested is abraded during the test, such as the metal and metal surface slide rapidly, the metal friction surface will be worn by 2-5mm during the test. The conventional thermocouple does not allow the thermocouple junction to be damaged, and the non-contact temperature measurement requires the visual inspection between a test point and an instrument. At present, no sensor can realize direct temperature test under the condition.
The query conditions of the existing related patents are as follows:
CN101782440A is a novel thermocouple, including sleeve pipe, insulating layer, two thermocouple wires of different materials, wherein a thermocouple wire is strung into and extends to the top end of another thermocouple wire from another thermocouple wire section, and two thermocouple wires form the welding end at the top end welding. The problem of weld end joint strength, under high temperature environment and the environment that has great impact, can use for a long time is solved to do not relate to the continuous temperature test under the galvanic couple silk loss condition problem.
CN202562649U a patent of novel thermocouple, this patent has increased inside and outside protective case on traditional galvanic couple silk's basis, fills rare earth layer between the two, plays the function of filtering and adsorbing harmful gas, prevents that gas from revealing.
CN211504437U is a thermocouple with strong stability, in particular to a thermocouple with strong stability, which comprises a control box, a connecting flange, a measuring end and a protection tube and aims to provide a stable external supporting structure for the thermocouple.
In summary, the conventional thermocouple cannot meet the requirement of continuous and rapid temperature measurement under the condition of measuring the end surface abrasion.
Disclosure of Invention
The invention aims to solve the technical problem that the self-updating rapid temperature measuring thermocouple with the rolled laminated structure is provided aiming at the defects in the prior art, the requirement of rapid temperature measurement response is met, the thermocouple has the characteristics of small volume, small thermal constant and capability of self-updating in the high-speed wear process, and has wide application prospect and great practical significance in the occasion of testing the rapid temperature of a wear surface.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a self-updating quick temperature thermocouple with a roll-shaped laminated structure comprises a sheet material wound into a roll-shaped structure, wherein the sheet material is formed by laminating and pressing a positive material layer and a negative material layer together.
According to the technical scheme, the anode material is nickel-chromium alloy, and the cathode material is nickel-silicon alloy.
According to the technical scheme, the thickness of the sheet is 0.008 m-0.02 m.
According to the technical scheme, the surface of the sheet is provided with the insulating layer.
According to the technical scheme, the insulating layer is made of SiO 2 And (3) a layer.
According to the technical scheme, siO 2 The layer is deposited on the outer surface of the sheet by a deposition process.
According to the technical scheme, the thickness of the insulating layer is 0.5-2 um.
According to the technical scheme, the self-updating rapid temperature thermocouple with the roll-shaped laminated structure further comprises a cylindrical shell, and the roll-shaped laminated structure is arranged in the cylindrical shell.
According to the technical scheme, magnesium oxide filler is filled between the shell and the rolled laminated structure, and the shell is made of stainless steel.
According to the technical scheme, the upper end of the shell is open, the sheet exceeds the upper end of the shell, the lower end of the shell is provided with the base, the base is provided with the anode lead and the cathode lead, and the anode lead and the cathode lead are respectively connected with the anode material layer and the cathode material layer.
The invention has the following beneficial effects:
the invention realizes the characteristic that a new thermocouple junction can be formed under the condition of high-speed wear by the thermocouple of a roll-shaped laminated structure formed by anode and cathode materials, and solves the requirement of continuous temperature measurement of the thermocouple under the condition of quick end surface wear; the multilayer coil type wear surface temperature sensor has the advantages of being small in thermal constant, capable of meeting the requirement of temperature measurement quick response, extremely high in value, small in size, small in thermal constant, capable of being updated in the high-speed wear process, and wide in application prospect and great in practical significance in the occasion of testing the quick temperature of the wear surface.
Drawings
FIG. 1 is a perspective view of a self-renewing rapid temperature thermocouple of a rolled laminate structure in an embodiment of the present invention;
FIG. 2 is a front view of a self-renewing rapid temperature thermocouple of a rolled laminate structure in an embodiment of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic diagram illustrating operation of a self-renewing rapid temperature thermocouple of a rolled laminate structure in an embodiment of the present invention;
in the figure, 1-shell, 2-sheet, 3-anode and cathode leads, 4-magnesium oxide filler, 5-thermocouple wear-permitting zone, 6-track, 7-rocket sled skid shoe, 8-roll laminated structure self-updating rapid temperature thermocouple, and 9-thermocouple mounting hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 4, in an embodiment of the self-renewing rapid temperature thermocouple in a rolled laminated structure according to the present invention, the self-renewing rapid temperature thermocouple includes a sheet 2 wound in a rolled structure, where the sheet 2 is formed by laminating and pressing a positive electrode material layer and a negative electrode material layer together, and finally forms a rolled laminated structure formed by the positive electrode material and the negative electrode material.
Further, the anode material is nickel-chromium alloy, and the cathode material is nickel-silicon alloy; the positive electrode material layer and the negative electrode material layer are laminated in two layers, one on top of the other, to form a sheet 2.
Further, the thickness of the sheet 2 is 0.008m to 0.02m.
Further, the optimum thickness of the sheet 2 in the specific example is 0.01mm.
Further, the surface of the sheet 2 is provided with an insulating layer.
Further, the insulating layer is SiO 2 A layer.
Further, siO 2 The layer is deposited on the outer surface of the sheet by deposition, which acts as an insulating and oxidation resistant layer.
The sheet material is a square or rectangular thin sheet plate.
Further, the thickness of the insulating layer is 0.5 um-2 um.
Further, the optimal thickness of the insulating layer in the specific embodiment is 1um.
Furthermore, the self-updating rapid temperature measuring thermocouple with the roll-shaped laminated structure further comprises a cylindrical shell 1, and the roll-shaped laminated structure is arranged in the cylindrical shell 1.
Further, a magnesium oxide filler 4 is filled between the case 1 and the rolled laminated structure, and the case 1 is made of stainless steel.
Furthermore, the upper end of the shell 1 is open, the sheet 2 exceeds the upper end of the shell 1, the lower end of the shell 1 is provided with a base, the base is provided with a positive electrode lead and a negative electrode lead, and the positive electrode lead and the negative electrode lead are respectively connected with a positive electrode material layer and a negative electrode material layer; the coiled sheet above the base is a thermocouple wear allowance zone 5.
The invention provides a design method of a self-updating rapid temperature thermocouple structure of a roll-shaped laminated structure. Firstly, the positive electrode material nickel-chromium and the negative electrode material nickel-silicon positive and negative electrode materials which are processed into a sheet structure with the thickness of 0.01mm are processed, and the thinner material can ensure a smaller thermal constant and realize ms-level rapid temperature measurement. The surface is deposited with SiO with the thickness of 1um by a deposition method 2 Layer, which has insulating and antioxidant effects. The positive and negative electrode materials are pressed together, so that the gap between the positive and negative electrode materials is reduced, and the product is ensuredA stable thermocouple junction was demonstrated.
The nickel-chromium and the nickel-silicon are mutually overlapped in a roll shape to form a cylindrical structure. The cylindrical thermocouple shell 1 is made of stainless steel, the thickness is 1mm, and the outer diameter is 4mm; and welding a rolled sheet 2 formed by the anode and cathode materials of the thermocouple, and leading out anode and cathode leads 3 of the thermocouple. Magnesium oxide (MgO) filler 4 is filled between the stainless steel shell 1 and the K-type thermocouple, so that the stainless steel shell 1 is insulated from the thermocouple material and the lead.
The self-updating rapid temperature thermocouple with the roll-shaped laminated structure is a K-type thermocouple; the thermocouple junction has the characteristics of small volume, small thermal constant and self-updating in the high-speed wear process, and has wide application prospect and great practical significance in the occasion of testing the rapid temperature of the wear surface.
The working principle of the invention is as follows: the rocket sled is a large dynamic device which uses a rocket engine as power to push a rocket pulley to advance. Fig. 4 is a structural diagram of a temperature test of the self-updating rapid temperature thermocouple of the roll-shaped laminated structure in the high-speed operation of the rocket sled shoe 7. The self-updating rapid temperature measuring thermocouple with the roll-shaped laminated structure is arranged on a rocket sled sliding shoe 7 on the track 6, and the rocket sled sliding shoe 7 and the track 6 adopt sliding friction. When the speed of the rocket sled is continuously increased, the abrasion surface melting and abrasion phenomena are generated due to high-speed friction between the rocket sled and the track; the self-updating rapid temperature measuring thermocouple 8 with the rolled laminated structure is inserted through a thermocouple mounting hole 9 on the upper surface of the sliding shoe, the thermocouple mounting hole is a through hole, the upper end surface of the thermocouple is flush with the wear surface of the sliding shoe, namely the upper end surface of the rolled sheet 2 is flush with the wear surface of the sliding shoe, the recording equipment records the voltage change of the positive and negative lead wires of the thermocouple, and the temperature change of the wear surface of the sliding shoe in the whole high-speed sliding process is calculated.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (10)
1. A self-updating rapid temperature thermocouple with a roll-shaped laminated structure is characterized by comprising a sheet material wound into a roll-shaped structure, wherein the sheet material is formed by laminating and pressing a positive material layer and a negative material layer together.
2. The self-renewing rapid temperature thermocouple of claim 1, wherein the positive electrode material is nichrome and the negative electrode material is nickel silicon.
3. A self-renewing rapid temperature thermocouple of a rolled laminate structure according to claim 1 wherein the thickness of the sheet is between 0.008m and 0.02m.
4. The self-renewing rapid temperature thermocouple of claim 1, wherein the surface of the sheet is provided with an insulating layer.
5. The self-renewing rapid temperature thermocouple of claim 4, wherein the insulating layer is SiO 2 And (3) a layer.
6. The self-renewing fast temperature thermocouple of claim 5 having a rolled laminate construction wherein the SiO is 2 The layer is deposited on the outer surface of the sheet by a deposition process.
7. The self-renewing fast temperature thermocouple of a jelly-roll laminate structure according to claim 4, wherein the insulating layer has a thickness of 0.5 to 2um.
8. The laminate-rolled self-renewing rapid temperature thermocouple of claim 1, further comprising a cylindrical housing, said laminate-rolled self-renewing rapid temperature thermocouple being disposed within said cylindrical housing.
9. The self-renewing fast temperature thermocouple of claim 8, wherein a magnesium oxide fill is disposed between the housing and the rolled stack, and the housing is made of a stainless steel material.
10. The self-renewing rapid temperature thermocouple of claim 8, wherein the upper end of the case is open, the sheet extends beyond the upper end of the case, the lower end of the case is provided with a base, and the base is provided with a positive electrode lead and a negative electrode lead, the positive electrode lead and the negative electrode lead being connected to the positive electrode material layer and the negative electrode material layer, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443962.5A CN115752784A (en) | 2022-11-18 | 2022-11-18 | Self-updating quick temperature measuring thermocouple with roll-shaped laminated structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443962.5A CN115752784A (en) | 2022-11-18 | 2022-11-18 | Self-updating quick temperature measuring thermocouple with roll-shaped laminated structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115752784A true CN115752784A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211443962.5A Pending CN115752784A (en) | 2022-11-18 | 2022-11-18 | Self-updating quick temperature measuring thermocouple with roll-shaped laminated structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115752784A (en) |
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2022
- 2022-11-18 CN CN202211443962.5A patent/CN115752784A/en active Pending
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