CN209841227U - Three-branch type full-armored rapid platinum thermal resistor - Google Patents
Three-branch type full-armored rapid platinum thermal resistor Download PDFInfo
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- CN209841227U CN209841227U CN201920945346.7U CN201920945346U CN209841227U CN 209841227 U CN209841227 U CN 209841227U CN 201920945346 U CN201920945346 U CN 201920945346U CN 209841227 U CN209841227 U CN 209841227U
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Abstract
The utility model discloses a three-support full-armor rapid platinum resistance, which comprises a temperature sensing end and an armor leading-out end, wherein the temperature sensing end comprises a shell, insulating powder, a platinum resistance element and metal leads, the insulating powder is packaged in the shell, the number of the platinum resistance elements is 3, the platinum resistance elements are coaxially arranged at intervals of 120 degrees, the metal leads penetrate into the insulating powder and are welded with the platinum resistance element, the metal leads are pulled and compacted into a whole, the number of the metal leads is 9, and the platinum resistance elements are coaxially arranged at equal angles; the shell is fixedly connected with the armor leading-out end. The utility model discloses the structure is with three platinum resistance elements solidification in a casing, and the field installation only needs a thief hole, and the field is installed easily, and the equipartition setting of the equiangular of three resistances has reduced dynamic, static deviation between three components by a wide margin. The defect in the prior art during redundant design is overcome.
Description
Technical Field
The utility model belongs to the technical field of resistance, concretely relates to quick platinum resistance of three full armoring of type.
Background
The platinum thermistor is a temperature sensor using platinum as a temperature sensing material, and is a temperature detector composed of an inner lead and a protection tube, and generally has a component connected with an external measuring and controlling device and a mechanical device, and is widely applied to the fields of automobiles, aviation, electric power, metallurgy, chemical engineering and the like. The reliability of a platinum thermistor as a temperature detection device largely determines the operational stability of a host machine using the platinum thermistor, but the platinum thermistor as an electrical component is easily damaged by the influence of ambient temperature, vibration, fluid impact, and the like. Therefore, in a monitoring system, redundancy is needed, a two-to-one mode is often used, but a three-to-two logic design is ideally adopted to solve the problem that a single signal is unreliable. However, the above-mentioned logical setting of two out of three requires three temperature values to be tested, and the existing method is implemented by installing three temperature measurement elements on the same equipment. However, because the three elements are arranged in the three measuring holes, the reaction speed of each element is different, and dynamic and static deviations caused by different heat transfer speeds and position differences exist, so that the system has obvious defects, and some mechanical parts do not have the condition for arranging the three measuring holes, so that the logic of taking three or two is more difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three quick platinum resistance of type full armor to realize measuring three temperature parameter at a measuring position.
The utility model discloses a realize through following technical scheme: the temperature sensing end comprises a shell, insulating powder, platinum thermistor elements and metal leads, wherein the insulating powder is packaged in the shell, the number of the platinum thermistor elements is 3, the platinum thermistor elements are coaxially arranged at intervals of 120 degrees, the metal leads penetrate through the insulating powder and are connected with the platinum thermistor elements in a welding mode, and the number of the metal leads is 9, and the metal leads are coaxially arranged at equal angles; the shell is fixedly connected with the armor leading-out end.
Further: a fixed frame is arranged at the non-measuring end of the platinum thermal resistance element, and a lead support is arranged at the position where the metal lead passes through; the fixing frame is cylindrical and is provided with three fixing grooves matched with the non-measuring end of the platinum thermal resistance element; the wire support is circular, 9 threading holes are formed in the upper surface at equal angles, and herringbone elastic supporting legs are arranged on the outer side.
Further: the armored wire and the shielding soft lead are connected through the transition pipe.
Further: the insulating powder is magnesium oxide.
Further: the shell is a metal tube.
The utility model has the advantages that: the structure of the utility model greatly reduces the dynamic and static deviation among three platinum thermal resistance elements; three platinum thermal resistance elements are solidified in one shell, only one sampling hole is needed for field installation, and the field installation is easy. The metal shell and the armor conductor are connected in a full-curing process and a self-welding mode, and are insulated by metal oxide, so that the metal shell and the armor conductor have the advantages of high response speed, high insulation, vibration resistance, long service life, high temperature resistance and the like, and high reliability is realized.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a temperature sensing end structure;
FIG. 3 is a cross-sectional view taken at A in FIG. 2;
FIG. 4 is a cross-sectional view taken at B in FIG. 2;
FIG. 5 is a cross-sectional view at C of FIG. 2;
description of reference numerals: 1 is a temperature sensing end, 11 is a shell, 12 is insulating powder, 13 is a platinum thermal resistance element, 14 is a metal lead, 15 is a fixed frame, 16 is a lead support, 17 is an elastic support leg, 2 armor leading-out ends, 3 is an armor lead, 4 is a transition pipe, and 5 is a shielding soft lead.
Detailed Description
As shown in fig. 1-5, the three-branch type fully armored fast platinum thermistor of the present invention comprises a temperature sensing end 1 and an armor leading-out end 2, wherein the temperature sensing end comprises a housing 11, insulating powder 12, a platinum thermistor element 13, and metal leads 14, the insulating powder is encapsulated in the housing, the number of the platinum thermistor elements is 3, the platinum thermistor elements are coaxially arranged at intervals of 120 degrees, the metal leads penetrate into the insulating powder and are welded with the platinum thermistor element, the metal leads are pulled, pulled and compacted into a whole, the number of the metal leads is 9, and the three-branch type fully armored fast platinum thermistor is coaxially arranged at equal angles (excluding a transition section lead near a resistor position); the shell and the armor leading-out end are fixedly connected or integrally arranged, namely the tail end of the shell is the armor leading-out end.
Preferably: a fixed frame 15 is arranged at the non-measuring end of the platinum thermal resistance element, and a lead support 16 is arranged at the position where the metal lead passes through; the non-measuring end is fixed with the fixing frame, so that the induction of the platinum thermal resistance element to the temperature cannot be influenced, and the measuring accuracy cannot be influenced; the fixing frame is in a flat cylindrical shape, namely a cylindrical shape with small height, the diameter of the fixing frame is smaller than the inner diameter of the shell after pulling, the movement and compaction of the insulating powder during pulling are not influenced, and meanwhile, the position stability during pulling is also improved; three fixing grooves matched with the non-measuring end of the platinum thermal resistance element are arranged; the lead support is circular, 9 threading holes are formed in the upper surface of the lead support at equal angles, herringbone elastic support legs 17 are formed in the outer side at equal angles, the elastic support legs (formed planes) can be arranged in the plane of the lead support or perpendicular to the plane, the elastic support legs are elastic metal sheets, the elastic support legs are matched with the shell and are compressed along with the contraction of the shell, the support is always kept at the center of the shell, and therefore the lead is accurately positioned; the armor leading-out end can be connected with an armor lead, and a connecting wire can also be directly led out to be connected with a control instrument.
Preferably: the armored wire is matched with the armored leading-out end 3 and the shielding soft lead 5, and the armored wire and the shielding soft lead are connected through a transition pipe 4; two ends of the armor which is protected on the outer layer of the armored lead are respectively connected with the armor leading-out end and the transition pipe and can be connected in a crimping mode, an automatic fusion welding mode and the like; the outer shielding layer of the shielding soft lead is connected with the transition pipe and can be connected in a crimping mode, an automatic fusion welding mode and the like. The metal lead of the thermal resistance element is a silver wire phi 0.2mm, the wire in the armored wire is a nickel wire phi 0.2mm, the soft lead in the shielding soft lead is a silver-plated copper wire, the three are sequentially connected, specifically, the soft lead is welded at the armor leading-out end or in the transition pipe and can be treated as an insulating outer protective layer; the outer part of the shielding soft lead is provided with a connecting wire or an extension line of the soft lead so as to be connected with a measuring instrument.
Preferably: the insulating powder is magnesium oxide, the shell is a stainless steel metal tube, and the metal lead is made of silver, copper or nickel.
Preferably: the shell and the armor leading-out end are fixedly connected through bolts or welded.
The structure of the present invention is described in detail below, and three micro platinum thermal resistors (Pt 100) are uniformly placed in a narrow metal case, and metal oxide is filled around the three micro platinum thermal resistors, and a full curing process is performed by pulling, pressing and compacting the three micro platinum thermal resistors. The lead is fixed in a self-fluxing welding mode; the three elements are arranged at 120 degrees and are located at the same position; the distance from the temperature sensing end to each element and the mutual distance between the three are equal. The above arrangement has the following advantages: a. the heat transfer coefficients of heat transfer are the same during heat transfer; b. the dynamics generated by each element during heat transfer are the same; c. the steady-state temperature value of each element is the same; d. because the whole device is fully cured and has no gap, the device obtains extremely high heat transfer speed and realizes the rapid detection of temperature signals.
The structure of the utility model greatly reduces the dynamic and static deviation between the three elements; three platinum thermal resistance elements are solidified in one shell, only one sampling hole is needed for field installation, and the field installation is easy. The metal shell and the armor conductor are subjected to full-curing process, self-fusion welding and metal oxide insulation, so that the high-reliability metal-clad steel has the performances of high response speed (second level), high insulation (more than 100G omega), vibration resistance, long service life (up to 15 years), high temperature resistance and the like, and high reliability is realized.
Claims (5)
1. Three quick platinum resistance of type full armor, its characterized in that: the temperature sensing end comprises a shell, insulating powder, platinum thermistor elements and metal leads, wherein the insulating powder is packaged in the shell, the number of the platinum thermistor elements is 3, the platinum thermistor elements are coaxially arranged at intervals of 120 degrees, the metal leads penetrate through the insulating powder and are connected with the platinum thermistor elements in a welding mode, and the number of the metal leads is 9, and the metal leads are coaxially arranged at equal angles; the shell is fixedly connected with the armor leading-out end.
2. The triple-type fully armored rapid platinum thermal resistor according to claim 1, wherein: a fixed frame is arranged at the non-measuring end of the platinum thermal resistance element, and a lead support is arranged at the position where the metal lead passes through; the fixing frame is cylindrical and is provided with three fixing grooves matched with the non-measuring end of the platinum thermal resistance element; the wire support is circular, 9 threading holes are formed in the upper surface at equal angles, and herringbone elastic supporting legs are arranged on the outer side.
3. The triple-type fully armored rapid platinum thermal resistor according to claim 1, wherein: the armored wire and the shielding soft lead are connected through the transition pipe.
4. The triple-type fully armored rapid platinum thermal resistor according to claim 1, wherein: the insulating powder is magnesium oxide.
5. The triple-type fully armored rapid platinum thermal resistor according to claim 1, wherein: the shell is a metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920945346.7U CN209841227U (en) | 2019-06-22 | 2019-06-22 | Three-branch type full-armored rapid platinum thermal resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920945346.7U CN209841227U (en) | 2019-06-22 | 2019-06-22 | Three-branch type full-armored rapid platinum thermal resistor |
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| Publication Number | Publication Date |
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| CN209841227U true CN209841227U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920945346.7U Active CN209841227U (en) | 2019-06-22 | 2019-06-22 | Three-branch type full-armored rapid platinum thermal resistor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551275A (en) * | 2020-05-23 | 2020-08-18 | 沈阳市西城精密电器仪表厂 | Double-branch embedded platinum thermal resistor |
-
2019
- 2019-06-22 CN CN201920945346.7U patent/CN209841227U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551275A (en) * | 2020-05-23 | 2020-08-18 | 沈阳市西城精密电器仪表厂 | Double-branch embedded platinum thermal resistor |
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