CN220853922U - Thermal resistor of metal inductive head - Google Patents
Thermal resistor of metal inductive head Download PDFInfo
- Publication number
- CN220853922U CN220853922U CN202321987636.0U CN202321987636U CN220853922U CN 220853922 U CN220853922 U CN 220853922U CN 202321987636 U CN202321987636 U CN 202321987636U CN 220853922 U CN220853922 U CN 220853922U
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- CN
- China
- Prior art keywords
- shell
- fixedly connected
- thermal resistor
- chamber
- protective layer
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 26
- 230000001939 inductive effect Effects 0.000 title claims abstract description 16
- 239000011241 protective layer Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 229920006328 Styrofoam Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000008261 styrofoam Substances 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 238000009529 body temperature measurement Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Details Of Resistors (AREA)
Abstract
The utility model discloses a metal inductive head thermal resistor, comprising: the shell, the inside of shell is provided with protective layer one, protective layer two and insulating tube, the one end of shell is provided with cavity two, the insulating tube is located the middle part of cavity two, the one end fixedly connected with detecting element of insulating tube, the side fixedly connected with terminal box of shell, and terminal box and cavity two homonymy ends, the inside of terminal box is provided with cavity one, the one end of insulating column extends to in the terminal box, and fixedly connected with terminal, fixedly connected with mounting panel one and mounting panel two in the cavity one, the middle part fixedly connected with diode of mounting panel one, the side fixedly connected with outlet pipe of terminal box, the shell has cup jointed mounting bolt. The current input to the thermal resistor can be limited, and errors of the thermal resistor are prevented.
Description
Technical Field
The utility model relates to the technical field of thermal resistors, in particular to a metal inductive head thermal resistor.
Background
Thermal resistance is one of the most commonly used temperature detectors in the medium and low temperature range. The thermal resistance temperature measurement is based on the characteristic that the resistance value of the metal conductor increases with an increase in temperature. Its main characteristics are high measuring accuracy and stable performance. The thermal resistor can be divided into a wire-wound element type and a film element type according to the structure, the wire-wound type is the most common type at present, and a temperature sensing metal wire is wound on a core body made of a certain material, so that the thermal resistor is called as a wire-wound type; the film is made by embedding temperature sensing metal on a thin sheet substrate. At present, the common thermal resistance probes in use are all wire wound, and the application in different occasions is realized by selecting different matrixes, protective sleeves, connecting wires and the like. The film type thermal resistor has the characteristics of small volume, high resistance temperature coefficient, small heat capacity, quick thermal response, vibration resistance and impact resistance besides the performance of the conventional thermal resistor, is suitable for a temperature measuring system with small installation position and needs quick response, has wide application in the fields such as thermal test of electronic equipment, and generally is prepared by welding a thermal resistor chip lead wire, extending the lead wire, and then putting the lead wire into a cylindrical metal sleeve to be packaged as an induction head.
But the self-heating coefficient of the film type thermal resistor is higher than that of the wire winding type thermal resistor, and the excessive current can bring larger error to the temperature measurement.
Disclosure of utility model
The utility model aims to provide a metal induction head thermal resistor, which can limit the current input into the thermal resistor and avoid the problem that the temperature measurement of the thermal resistor is greatly error due to overlarge current.
To achieve the above object, there is provided a metal induction head thermal resistor comprising: the shell, the inside of shell is provided with protective layer one, protective layer two and insulating tube, the one end of shell is provided with cavity two, and cavity two extends to in the shell, insulating tube is located the middle part of cavity two, the one end fixedly connected with detecting element of insulating tube, and detecting element is close to the lateral wall of shell, protective layer one and protective layer two fixedly connected with are in the inside wall of shell, protective layer two parcel insulating tube, protective layer one parcel detecting element, the side fixedly connected with terminal box of shell, and terminal box and cavity two homonymy ends, the inside of terminal box is provided with cavity one, the one end of insulating tube extends to in the terminal box, and fixedly connected with terminal, cavity one fixedly connected with mounting panel one and mounting panel two, mounting panel two are located the middle part of cavity one, terminal runs through the middle part and fixed connection of mounting panel two, one side that is located the mounting panel two, and keep away from the shell, the middle part fixedly connected with diode of mounting panel one, the side fixedly connected with wire tube of terminal box, and the one end of wire box, the inside of terminal box is provided with cavity one, one end of terminal box runs through the mounting panel, and the bolt is cup jointed in the middle part of the shell fixedly connected with bolt. Excessive current passing through the thermal resistor can be absorbed, and larger errors caused by excessive current to temperature measurement of the thermal resistor are avoided.
According to the metal inductive head thermal resistor, the junction box comprises a wiring cover and a shell, the first cavity and the mounting hole are positioned at the side end of the shell, the first cavity is far away from the shell, the first cavity extends into the shell, the mounting hole is close to the shell, the mounting hole penetrates through the shell and extends into the first cavity, the insulating tube penetrates through the mounting hole, the side end of the shell is fixedly connected with the shell, and the cover body and the same side end of the cavity are connected. The thermal resistor is convenient to detach, and overhauling is performed when the thermal resistor breaks down.
According to the metal inductive head thermal resistor, the shell is made of metal. The thermal resistor has higher firmness, can better protect internal elements and prolongs the service life of the thermal resistor.
According to the metal inductive head thermal resistor, the first protective layer is made of magnesium oxide. By utilizing the good heat conductivity, the first protective layer can reduce the measurement error of the detection element at the same time of detecting the element.
According to the metal inductive head thermal resistor, the second protective layer is made of Styrofoam. When the thermal resistor is impacted by the outside, the insulating tube can be protected from being damaged, and the thermal resistor has excellent heat insulation and electric insulation properties.
According to the metal inductive head thermal resistor, the insulating tube is made of glass. The heat-resistant and vibration-resistant ceramic material can adapt to low temperature and extremely high temperature, and has good heat-resistant and vibration-resistant performances.
The beneficial effects of the utility model are as follows: the diode can absorb the redundant current input to the thermal resistor, so that the problem that the temperature measurement of the thermal resistor is greatly error due to the high current passing through the thermal resistor is avoided.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a perspective view of a thermal resistor of a metal inductive head according to the present utility model;
FIG. 2 is a cross-sectional view of a metal inductive head thermal resistor according to the present utility model;
FIG. 3 is a cross-sectional structural view of the junction box;
Fig. 4 is a sectional structural view of the housing.
Legend description:
1. A wire outlet pipe; 2. a housing; 3. installing a bolt; 4. a junction box; 5. a diode; 6. binding posts; 7. a first chamber; 8. an insulating tube; 9. a first protective layer; 10. a detection element; 11. a second protective layer; 12. a first mounting plate; 13. a second mounting plate; 14. a junction cover; 15. a mounting hole; 16. a housing; 17. and a second chamber.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
Referring to fig. 1-4, a metal inductive head thermal resistor according to an embodiment of the present utility model includes: the shell 2, the inside of shell 2 is provided with protective layer one 9, protective layer two 11 and insulating tube 8, the one end of shell 2 is provided with cavity two 17, and cavity two 17 extend to in the shell 2, insulating tube 8 is located the middle part of cavity two 17, the one end fixedly connected with detecting element 10 of insulating tube 8, and detecting element 10 is close to the lateral wall of shell 2, protective layer one 9 and protective layer two 11 fixed connection are in the inside wall of shell 2, protective layer two 11 parcel insulating tube 8, protective layer one 9 parcel detecting element 10, the side fixedly connected with terminal box 4 of shell 2, and terminal box 4 and cavity two 17 homonymous ends, the inside of terminal box 4 is provided with cavity one 7, the one end of insulating tube 8 extends to in the terminal box 4, and fixedly connected with terminal 6, cavity one 7 internal fixedly connected with mounting plate one 12 and mounting plate two 13, mounting plate two 13 are located the middle part of cavity one 7, terminal 6 runs through the middle part and fixedly connected with mounting plate two 13, mounting plate one 12 is located one side of mounting plate two 13, and keep away from shell 2, the middle part fixedly connected with diode 5 of mounting plate one 12, terminal box 4's side fixedly connected with outlet wire 1, and 3 are cup jointed in the bolt 3 at the one end of terminal box 4, and the bolt 3 is fixed connection 2 at the terminal box 2.
The junction box 4 comprises a junction cover 14 and a shell 16, a first chamber 7 and a mounting hole 15 are arranged at the side end of the shell 16, the first chamber 7 is far away from the shell 2, the first chamber 7 extends into the shell 2, the mounting hole 15 is close to the shell 2, the mounting hole 15 penetrates through the shell 16 and extends into the first chamber 7, an insulating tube 8 penetrates through the mounting hole 15, the side end of the shell 16 is fixedly connected with the shell 16, and the cover body and the first chamber 7 are at the same side end.
The housing 2 is made of metal.
The first protective layer 9 is made of magnesia.
The second protective layer 11 is made of Styrofoam.
The insulating tube 8 is made of glass.
Working principle: the thermal resistor is mounted on the pipeline through the mounting bolt 3, the temperature of fluid in the pipeline is measured, a circuit is connected to the diode 5 through the junction box 4 entering through the wire outlet pipe 1, redundant current is absorbed, the circuit is connected to the detection element 10 through the diode 5, and when the thermal resistor is impacted in the transportation process, the first protection layer 9 plays a buffering role, so that the insulation pipe 8 is prevented from being broken.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (6)
1. A metal inductive head thermal resistor, comprising: the device comprises a shell (2), wherein a first protective layer (9), a second protective layer (11) and an insulating tube (8) are arranged in the shell (2), a second chamber (17) is arranged at one end of the shell (2), the second chamber (17) extends into the shell (2), the insulating tube (8) is positioned at the middle part of the second chamber (17), one end of the insulating tube (8) is fixedly connected with a detection element (10), the detection element (10) is close to the side wall of the shell (2), the first protective layer (9) and the second protective layer (11) are fixedly connected to the inner side wall of the shell (2), the second protective layer (11) wraps the insulating tube (8), the first protective layer (9) wraps the detection element (10), a junction box (4) is fixedly connected to the side end of the shell (2), a first chamber (7) is arranged in the interior of the junction box (4), one end of the insulating tube (8) extends into the junction box (4) and is fixedly connected with a first binding post (6), the first chamber (7) is fixedly connected with a second chamber (13) and the second chamber (13) is fixedly connected with a first mounting plate (13), terminal (6) run through the middle part and the fixed connection of mounting panel two (13), mounting panel one (12) is located one side of mounting panel two (13), and keeps away from shell (2), the middle part fixedly connected with diode (5) of mounting panel one (12), the side fixedly connected with of terminal box (4) is qualified for the next round of competitions tub (1), and the one end of being qualified for the next round of competitions tub (1) runs through terminal box (4), shell (2) have cup jointed mounting bolt (3), and mounting bolt (3) fixed connection in the middle part of shell (2).
2. A metal induction head thermal resistor according to claim 1, characterized in that the junction box (4) comprises a junction cover (14) and a shell (16), the first chamber (7) and the mounting hole (15) are located at the side end of the shell (16), the first chamber (7) is far away from the shell (2), the first chamber (7) extends into the shell (2), the mounting hole (15) is close to the shell (2), the mounting hole (15) penetrates through the shell (16) and extends into the first chamber (7), the insulating tube (8) penetrates through the mounting hole (15), the side end of the shell (16) is fixedly connected with the shell (16), and the cover and the first chamber (7) are at the same side end.
3. A metal inductive head thermal resistor according to claim 1, characterized in that the housing (2) is of metal material.
4. A metal inductive head thermal resistor according to claim 1, wherein the first protective layer (9) is made of magnesium oxide.
5. A metal inductive head thermal resistor according to claim 1, wherein the second protective layer (11) is made of a Styrofoam material.
6. A metal induction head thermal resistor according to claim 1, characterized in that said insulating tube (8) is of glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321987636.0U CN220853922U (en) | 2023-07-27 | 2023-07-27 | Thermal resistor of metal inductive head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321987636.0U CN220853922U (en) | 2023-07-27 | 2023-07-27 | Thermal resistor of metal inductive head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220853922U true CN220853922U (en) | 2024-04-26 |
Family
ID=90741734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321987636.0U Active CN220853922U (en) | 2023-07-27 | 2023-07-27 | Thermal resistor of metal inductive head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220853922U (en) |
-
2023
- 2023-07-27 CN CN202321987636.0U patent/CN220853922U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |