CN201522470U - Combustible gas probe based on three-core technique - Google Patents
Combustible gas probe based on three-core technique Download PDFInfo
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- CN201522470U CN201522470U CN2009201977954U CN200920197795U CN201522470U CN 201522470 U CN201522470 U CN 201522470U CN 2009201977954 U CN2009201977954 U CN 2009201977954U CN 200920197795 U CN200920197795 U CN 200920197795U CN 201522470 U CN201522470 U CN 201522470U
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- inflammable gas
- gas probe
- probe
- core
- detecting element
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Abstract
The utility model relates to a combustible gas probe based on three-core technique, which comprises a Wheatstone bridge consisting of a pair of bridge arms and another pair of resistance bridge arms, wherein the pair of bridge arms consists of a detection element and a reference element. A supporting core is arranged between each two platinum wire leads of the detection element and a compensating component in the combustible gas probe and is used for bearing gravity of small aluminum oxide balls in the combustible gas probe. According to the utility model, the detection element can be enlarged and catalytic amount and probe flexibility can be increased. Because the leading-out platinum wires can not be tensioned, the probe is vibration resistant and has longer service life. Moreover, because the volume of the probe element is increased, influence of temperature, wind, humidity and the like to the zero point is reduced greatly, and then the zero point of an instrument connected to the probe is more stable and less shifting compared with that of a general probe.
Description
Technical field
The utility model relates to a kind of inflammable gas probe based on three core technologies, and described inflammable gas probe based on three core technologies adopts three core technical matters, and is widely used on the combustible gas probe.
Background technology
The inflammable gas probe is the normal parts of using on the combustible gas probe, and a pair of brachium pontis that the most crucial part of described probe is made up of detecting element and reference elements is formed resistance bridge with another together to the resistance brachium pontis, as shown in Figure 1.The principle of detecting element is utilized the low-temperature catalytic burning mode.When no inflammable gas exists, bridge circuit output balance, in case when containing inflammable gas in the environment, detecting element will produce flameless burning raises and the resistance increase its temperature, cause the bridge circuit out of trim and export the voltage signal that is directly proportional with inflammable gas concentration, the output signal size is directly proportional with gas concentration.
Traditional inflammable gas probe adopts two core technical matters usually, the inflammable gas probe of described employing two core technical matters as shown in Figure 2, detect and the go between gravity of direct oxidated aluminium bead of two platinum wires of compensating element,, described alumina globule is the platinum filament by the 0.03mm that 98% platinum (Pt) is mixed 2% palladium (Pd), coiled 10-13 circle length is the spring ringlet of 1.5mm, soak aluminium oxide, outside detecting element, be coated with palladium bichloride then and carry out heating evaporation and become catalyzer and form.
For the inflammable gas probe that described two core technical matters form, the gravity of direct oxidated aluminium bead because detection and two platinum wires of compensating element, go between, thereby the volume of detecting element can't be done greatly, and also be difficult to increase catalytic amount.In addition,, thereby make probe vibration resistance ability weaken, reduced serviceable life owing to the platinum wire of drawing is under pressure.And, make to be subject to Effect of Environmental such as temperature, wind-force, humidity at zero point of described probe because the volume of flammable other probes of making is less.
The utility model content
The technical matters that solves
Considering that prior art exists under the situation of the problems referred to above, designed the utility model.The purpose of this utility model is to provide a kind of can overcome the inflammable gas probe that there is defective in prior art.
Technical scheme
For solving the problems referred to above that prior art exists, the utility model provides a kind of inflammable gas probe based on three core technologies, and described inflammable gas probe based on three core technologies comprises that a pair of brachium pontis of being made up of detecting element and reference elements is with another resistance bridge that resistance brachium pontis is constituted; Is provided with supporting-core in the middle of detection in the described inflammable gas probe and two platinum wires of compensating unit, is used for bearing the gravity of the alumina globule of described inflammable gas probe.
Preferably, described inflammable gas probe comprises sensor module, head-shield, pedestal, packing ring, flame proof sheet, lead and cold rolling head.
Preferably, described sensor module comprises detecting element, compensating element,, supporting-core, platinum lead, pedestal liner and teflon thermoscreen.
Preferably, described detecting element and described compensating element, separate by described teflon thermoscreen.
Preferably, described alumina globule is the platinum filament by the 0.03mm that 98% platinum (Pt) is mixed 2% palladium (Pd), coiled 10-13 circle is long to soak aluminium oxide for the spring ringlet of 1.5mm, is coated with palladium bichloride then and carries out heating evaporation and become catalyzer and form outside detecting element.
Description of drawings
From the following description to preferred embodiments and drawings that purport of the present utility model and use thereof are described, above and other purpose of the present utility model, characteristics and advantage will be conspicuous, in the accompanying drawings:
Fig. 1 detects the electric bridge connection diagram for inflammable gas probe of the present invention;
Fig. 2 is the inflammable gas sonde configuration synoptic diagram that the present invention is based on two core technologies;
Fig. 3 is the inflammable gas sonde configuration synoptic diagram that the present invention is based on three core technologies;
Fig. 4 is that the inflammable gas probe that the present invention is based on three core technologies is formed diagrammatic cross-section;
Fig. 5 is that the inflammable gas probe that the present invention is based on three core technologies is formed schematic appearance;
Fig. 6 is the sensor module test section structural representation that the present invention is based on three core technologies.
Embodiment
Below, will be described in detail the utility model specific embodiment mode in conjunction with the accompanying drawings.
Fig. 3 is the inflammable gas sonde configuration synoptic diagram that the present invention is based on three core technologies.
As shown in Figure 3, detecting and the middle supporting-core 12 that inserts of two platinum wires of compensating element,, be used to bear the gravity of alumina globule, thereby make platinum wire no longer bear the gravity of described alumina globule.
Fig. 4 is that the inflammable gas probe that the present invention is based on three core technologies is formed diagrammatic cross-section, and Fig. 5 is that the inflammable gas probe that the present invention is based on three core technologies is formed schematic appearance, and Fig. 6 is the sensor module test section structural representation that the present invention is based on three core technologies.
As shown in Figure 4, described inflammable gas probe based on three core technologies comprises sensor module 6, head-shield 2, pedestal 1, packing ring 4, flame proof sheet 3,5, lead 7,8,9 and cold rolling 10.The sensor module test section that the present invention is based on three core technologies mainly is made up of detecting element 10, compensating element, 11, supporting-core 12, platinum lead 13, pedestal liner 14 and teflon thermoscreen 15 etc., specifically referring to Fig. 6.
According to important technological parameters of popping one's head in of the present invention be: sensing range: 0-100%LEL based on the inflammable gas of three core technologies; Response time: T
50＜10 seconds; Drift:＜5%/year; Physical dimension: φ 35 * 60; Working temperature :-40-0 ℃.
This shows, according to the present invention, because probe detects and the middle supporting-core that inserts of compensating element,, it has born the gravity of bead, the platinum wire of drawing no longer is subjected to pulling force, so detecting element can be done greatly, increasing that volume ratio is common is twice, make catalytic amount increase, probe remolding sensitivity ordinary ultrasonic probe increases 3 times.And because the platinum wire of drawing no longer is subjected to pulling force, the vibration resistance of therefore popping one's head in, prolong, can reach more than 5 years serviceable life; In addition, because the probe element volume increases, reduce environmental factors such as temperature, wind-force, humidity greatly to the influence at zero point, the instrument that therefore inserts probe compares that ordinary ultrasonic probe is more stable, drift is few zero point.
Although illustrated and described preferred embodiment of the present utility model, it is contemplated that those skilled in the art can design various modifications of the present utility model in the spirit and scope of claims.
Claims (5)
1. the inflammable gas based on three core technologies is popped one's head in, and it is characterized in that:
Described inflammable gas probe comprises that a pair of brachium pontis of being made up of detecting element and reference elements is with another resistance bridge that resistance brachium pontis is constituted;
Is provided with supporting-core in the middle of two platinum wires lead-in wires of detecting element in the described inflammable gas probe and compensating unit, is used for bearing the gravity of the alumina globule of described inflammable gas probe.
2. inflammable gas probe as claimed in claim 1 is characterized in that:
Described inflammable gas probe comprises sensor module, head-shield, pedestal, packing ring, flame proof sheet, lead and cold rolling head.
3. inflammable gas probe as claimed in claim 2 is characterized in that:
Described sensor module comprises described detecting element, described compensating element,, supporting-core, platinum lead, pedestal liner and teflon thermoscreen.
4. the inflammable gas probe based on three core technologies as claimed in claim 3 is characterized in that:
Described detecting element and described compensating element, separate by described teflon thermoscreen.
5. as the described inflammable gas probe of above-mentioned arbitrary claim, it is characterized in that based on three core technologies:
The platinum filament of the 0.03mm of described alumina globule by 98% platinum (Pt) being mixed 2% palladium (Pd), coiled 10-13 circle is long to soak aluminium oxide for the spring ringlet of 1.5mm, is coated with palladium bichloride then and carries out heating evaporation and become catalyzer and form outside detecting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201977954U CN201522470U (en) | 2009-10-09 | 2009-10-09 | Combustible gas probe based on three-core technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201977954U CN201522470U (en) | 2009-10-09 | 2009-10-09 | Combustible gas probe based on three-core technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522470U true CN201522470U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201977954U Expired - Lifetime CN201522470U (en) | 2009-10-09 | 2009-10-09 | Combustible gas probe based on three-core technique |
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| CN (1) | CN201522470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917069A (en) * | 2019-04-16 | 2019-06-21 | 泰州职业技术学院 | A kind of novel catalytic combustion type gas sensor |
-
2009
- 2009-10-09 CN CN2009201977954U patent/CN201522470U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917069A (en) * | 2019-04-16 | 2019-06-21 | 泰州职业技术学院 | A kind of novel catalytic combustion type gas sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |