CN204286613U - A kind of refuse-burning plant burning boiler special electric thermo-couple - Google Patents
A kind of refuse-burning plant burning boiler special electric thermo-couple Download PDFInfo
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- CN204286613U CN204286613U CN201420717390.XU CN201420717390U CN204286613U CN 204286613 U CN204286613 U CN 204286613U CN 201420717390 U CN201420717390 U CN 201420717390U CN 204286613 U CN204286613 U CN 204286613U
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- cold junction
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Abstract
The utility model relates to a kind of thermopair, particularly relate to a kind of refuse-burning plant burning boiler special electric thermo-couple, comprise the terminal box connected successively, base, cold junction and probe into end, described cold junction is provided with loose flange with probeing in the middle of end, cold junction protection tube is provided with in described cold junction, fire cement layer is coated with outside described cold junction protection tube, corundum layer is lined with outside described cement layer, described probe in end be provided be communicated with cold junction protection tube probe into end protection tube, the described end protection tube that probes into is made up of cobalt-chromium-tungsten alloy, described probeing in end protection tube is provided with inner tube, the even core of armouring is provided with in described inner tube, the even core of described armouring is made up of K type high temperature alloy.Because various acidic materials are almost corrosion-free to corundum, so thoroughly solve a difficult problem for thermocouple cold junction dewing corrosion.The end protection tube that probes into probeing into burner hearth part adopts cobalt-chromium-tungsten alloy, and the life-span is long, and has good tolerance to sour corrosion.Probe into end effective length and can reach more than 700mm, can closer to burner hearth center, thermometric is more accurate.
Description
Technical field
The utility model relates to a kind of thermopair, particularly relates to a kind of refuse-burning plant burning boiler special electric thermo-couple.
Background technology
Incineration treatment of garbage can make rubbish subtract appearance 90%, loss of weight 75%, and can kill virus and bacterium, can also utilize cogeneration, garbage incinerating power plant is built one after another in nowadays increasing city, to solve by the puzzlement of garbage-surrounded city simultaneously.In incineration process of domestic garbage, the chloride macromolecular compound in rubbish, as the precursor of the dioxin such as Polyvinylchloride, Benzene Chloride under the catalytic action of iron chloride and cupric chloride with O
2, HCL reaction generates dioxin, easily decompose, and the dioxin precursor be decomposed time near 300 DEG C can reconfigure rapidly generation dioxin under the high temperature of dioxin more than 800 DEG C.Affect in the factor of dioxin formation various, temperature is most important influence factor, and therefore the detection and control of incinerator fire box temperature is most important.
The common thermocouple actual effect used in incinerator is in the past very undesirable, actual environment very severe in burner hearth, flame temperature is high, the chloride produced after Plastics Combustion has corrosivity, grab bucket when dropping into rubbish toward burner hearth is interior and powerful impact is produced to the thermocouple temperature measurement end visited in furnace wall, in order to the thermometric end of thermopair just must insert darker by the temperature measured more accurately in burner hearth, closer to burner hearth center, often more than 600mm will be inserted.The various dust produced when the rubbish that when burning in burner hearth, eminence drops and burning are very strong to the vertical impact forces of thermopair when high temperature, very easily pounded by thermopair curved or pound disconnected.The cold junction part of thermopair is positioned at burner hearth wall pipe simultaneously; temperature is lower than in burner hearth; pressure is also negative pressure; therefore there will be the phenomenon that protection tube condenses; condensation the globule and cryogenic gas in chloride form acid; the cold junction part of strong corrosion thermopair, cause thermopair premature breakdown in 1-2 month, but thermocouple temperature measurement end does not also damage cold junction corrosion and damage often.Because thermopair is horizontal direction insert burner hearth, cold junction part is stressed maximum, and cold junction partial destruction rear support power weakens, cause thermopair to insert burner hearth part to be bent downwardly, even cause when changing thermopair and cannot extract out from crossing porthole, cause temperature detection to lose efficacy, very easily cause emission to exceed standard.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of refuse-burning plant burning boiler special electric thermo-couple, it is characterized in that: comprise the terminal box connected successively, base, cold junction and probe into end, described cold junction is provided with loose flange with probeing in the middle of end, cold junction protection tube is provided with in described cold junction, cement layer is coated with outside described cold junction protection tube, corundum layer is lined with outside described cement layer, described cold junction length >=650mm, described probe in end be provided be communicated with cold junction protection tube probe into end protection tube, the described end protection tube that probes into is made up of cobalt-chromium-tungsten alloy, described probeing in end protection tube is provided with inner tube, the even core of armouring is provided with in described inner tube, the even core of described armouring is made up of K type high temperature alloy, describedly probe into end effective length >=700mm.
The length of described inner tube holds protection tube length identical with probeing into.
Described cold junction protection tube is welded on base.
The even core of described armouring is made up of high temperature alloy.
The beneficial effects of the utility model are: outer lining corundum again after cold junction part coating fire cement, because various acidic materials are almost corrosion-free to corundum, so thoroughly solve a difficult problem for thermocouple cold junction dewing corrosion.The end protection tube that probes into probeing into burner hearth part adopts cobalt-chromium-tungsten alloy; cobalt-chromium-tungsten alloy Long-Time Service temperature 1200 DEG C; short-term can reach 1300 DEG C; and at high temperature there is good antiwear characteristics; the protecting tube life-span that high temperature resistant coal dust washes away in general fuel-burning power plant Circulating Fluidized Bed Boiler that this material is made can reach more than 1 year, and has good tolerance to sour corrosion.Probe into end effective length and can reach more than 700mm, can closer to burner hearth center, thermometric is more accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-terminal box, 2-base, 3-cold junction, 4-probes into end, 5-loose flange, 6-cold junction protection tube, 7-fire cement layer, 8-corundum layer, and 9-probes into end protection tube, 10-inner tube, the even core of 11-armouring.
Embodiment
Below in conjunction with accompanying drawing, explanation is further explained to the utility model.
Embodiment:
The utility model comprises the terminal box 1 connected successively, base 2, cold junction 3 and probe into end 4, cold junction 3 is provided with loose flange 5 with probeing in the middle of end 4, cold junction protection tube 6 is provided with in cold junction 3, cold junction protection tube 6 is welded on base 2, fire cement layer 7 is coated with outside cold junction protection tube 6, corundum layer 8 is lined with outside cement layer 7, cold junction 3 length >=650mm, probe in end 4 to be provided with and to be communicated with 6 probe into and hold protection tube 9 with cold junction protection tube, probe into end protection tube 9 to be made up of cobalt-chromium-tungsten alloy, probe in end protection tube 9 and be provided with and probe into the inner tube 10 of holding protection tube 9 length identical, the even core 11 of the armouring of filling magnesia powder is provided with in inner tube 10, the even core 11 of armouring is made up of K type high temperature alloy, probe into end 4 effective lengths >=700mm.
Utilize technical scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technical scheme, and reach above-mentioned technique effect, is all fall into protection domain of the present utility model.
Claims (4)
1. a refuse-burning plant burning boiler special electric thermo-couple, it is characterized in that: comprise the terminal box connected successively, base, cold junction and probe into end, described cold junction is provided with loose flange with probeing in the middle of end, cold junction protection tube is provided with in described cold junction, fire cement layer is coated with outside described cold junction protection tube, corundum layer is lined with outside described cement layer, described cold junction length >=650mm, described probe in end be provided be communicated with cold junction protection tube probe into end protection tube, the described end protection tube that probes into is made up of cobalt-chromium-tungsten alloy, described probeing in end protection tube is provided with inner tube, the even core of armouring is provided with in described inner tube, the even core of described armouring is made up of K type high temperature alloy, describedly probe into end effective length >=700mm.
2. a kind of refuse-burning plant burning boiler special electric thermo-couple according to claim 1, is characterized in that the length of described inner tube holds protection tube length identical with probeing into.
3. a kind of refuse-burning plant burning boiler special electric thermo-couple according to claim 1, is characterized in that described cold junction protection tube is welded on base.
4. a kind of refuse-burning plant burning boiler special electric thermo-couple according to claim 1, is characterized in that the even core of described armouring is made up of high temperature alloy and is had the oxidation resistant effect of anti-vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717390.XU CN204286613U (en) | 2014-11-25 | 2014-11-25 | A kind of refuse-burning plant burning boiler special electric thermo-couple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717390.XU CN204286613U (en) | 2014-11-25 | 2014-11-25 | A kind of refuse-burning plant burning boiler special electric thermo-couple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204286613U true CN204286613U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420717390.XU Active CN204286613U (en) | 2014-11-25 | 2014-11-25 | A kind of refuse-burning plant burning boiler special electric thermo-couple |
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| CN (1) | CN204286613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959460A (en) * | 2019-04-23 | 2019-07-02 | 安徽天康(集团)股份有限公司 | A kind of carbon element factory's quirk special electric thermo-couple |
-
2014
- 2014-11-25 CN CN201420717390.XU patent/CN204286613U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959460A (en) * | 2019-04-23 | 2019-07-02 | 安徽天康(集团)股份有限公司 | A kind of carbon element factory's quirk special electric thermo-couple |
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