CN204649324U - Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple - Google Patents
Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple Download PDFInfo
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- CN204649324U CN204649324U CN201520144595.8U CN201520144595U CN204649324U CN 204649324 U CN204649324 U CN 204649324U CN 201520144595 U CN201520144595 U CN 201520144595U CN 204649324 U CN204649324 U CN 204649324U
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- protection tube
- high temperature
- steam turbine
- abrasion resistant
- terminal box
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Abstract
The utility model discloses a kind of Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple, comprise protection tube, terminal box, thermal resistance and set bolt, protection tube has first end and the second end, the tungsten carbon compound alloy outer that protection tube is comprised metal base internal layer and formed by high electric field pulse fusing, gasification at metal base inner layer outer surface; Terminal box is fixedly connected on the first end of protection tube, and thermal resistance is arranged at the inside of the second end of protection tube and is connected to terminal box by wire, and set bolt fixed cover is located on protection tube.Thermopair of the present utility model, physical strength is high, thermal conductivity, the performance such as high temperature resistant, corrosion-resistant are good, is applicable to the temperature survey of each point for measuring temperature in the recirculating fluidized bed of large electric power plant station.
Description
Technical field
The utility model relates to thermopair, particularly relates to a kind of Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple.
Background technology
Large-scale thermal power stands in boiler hearth of circulating fluidized bed bed temperature, inside, exports, exceeds gateway, the low temperature sensor crossed the points for measuring temperature such as gateway, economizer gateway, air preheater gateway and need to use high-temperature wearable.The protection tube of the temperature sensor that current this kind of environment uses mainly adopts surface spray coating process.Cause surface spraying material very easily to come off because bi-material thermal expansivity is inconsistent when this protection tube is in hot environment for a long time, greatly reduce anti-wear performance.Thus only have three months the serviceable life of this temperature sensor, far do not reach the request for utilization of power plant.Nearly all power station, all can there is poling, distortion, bending, serious wear, situation about even rupturing in the temperature sensor of above-mentioned point for measuring temperature, these phenomenons restrict thermal power station for a long time and keep the safety in production efficiently.
Utility model content
The purpose of this utility model is overcome deficiency of the prior art and provide a kind of Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple.
The technical scheme that the utility model solution prior art problem adopts is: a kind of Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple, comprising:
Protection tube, has first end and the second end, the tungsten carbon compound alloy outer that described protection tube is comprised metal base internal layer and formed by high electric field pulse fusing, gasification at described metal base inner layer outer surface;
Terminal box, described terminal box is fixedly connected on the first end of described protection tube;
Thermal resistance, described thermal resistance is arranged at the inside of the second end of described protection tube and is connected to described terminal box by wire;
Set bolt, described set bolt fixed cover is located on described protection tube.
Preferably, described thermal resistance comprises metal sleeve and is located in the B alloy wire in described metal sleeve, and in described metal sleeve, filled high-temperature sintered oxide is with fixing described B alloy wire.
Preferably, described metal base internal layer is stainless steel substrate.
Preferably, described metal sleeve is inconel sleeve pipe.
Preferably, described terminal box is threaded with the first end of described protection tube.
Preferably, described set bolt welds with described protection tube.
The beneficial effects of the utility model are: thermopair of the present utility model have employed the protection of protection tube as thermal resistance of metal base internal layer and tungsten carbon compound alloy outer formation; this protection tube substantially increases anti-wear performance, thoroughly solves existing protection tube and adopts surface spray coating process easily come off in hot environment and greatly reduce the defect of wearing quality.In addition, thermal resistance employing of the present utility model as temperature-sensing element, has the features such as physical strength is high, good insulation preformance, anti-seismic performance are good, corrosion-resistant, long service life by metal sleeve, B alloy wire, the structure of high temperature sintering oxide through filling.Therefore, high-temp. wear-proof thermo-couple of the present utility model is particularly useful for the temperature survey of each point for measuring temperature in the recirculating fluidized bed of large electric power plant station.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple;
Fig. 2 is the sectional view of protection tube in the utility model embodiment Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Shown in Fig. 2, the utility model embodiment provides a kind of Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple, comprises protection tube 10, terminal box 20, thermal resistance 30 and set bolt 40.
Protection tube 10 has first end and the second end, and the tungsten carbon compound alloy outer 102 that this protection tube 10 is comprised metal base internal layer 101 and formed by high electric field pulse fusing, gasification at described metal base internal layer 101 outside surface.
Terminal box 20 is fixedly connected on the first end of described protection tube 10, and this terminal box 20 generally can adopt aluminium alloy to make.Thermal resistance 30 is arranged at the inside of the second end of described protection tube 10 and is connected to described terminal box 20, for measuring tempeature by wire (not shown).Set bolt 40 fixed cover is located on described protection tube 10, for this thermopair is fixed on external unit.
It should be noted that, the effect of protection tube 10 makes thermal resistance 30 and medium temperature to be measured isolation, makes it the erosion from chemistry and mechanical damage.To have excellent heat transfer property to the requirement of protection tube, can be durable in use.That is, protection tube 10 1 aspect needs to have good thermal conductivity, to improve the response speed that thermal resistance changes dut temperature, reduces delayed; On the other hand, need to have high temperature resistant, resistance to rapid heat cycle, corrosion-resistant, do not decomposite the gas harmful to electrode, have the characteristics such as enough physical strengths.And in the utility model; the composite structure that protection tube 10 adopts metal base internal layer 101 and tungsten carbon compound alloy outer 102 to form; then both can make it have better wear-resisting, high temperature resistant, decay resistance and enough physical strengths, good heat conductivility can have been made it have again.So, thoroughly can solve existing protection tube adopts surface spray coating process easily come off in hot environment and greatly reduce the defect of wearing quality.
In an embodiment of the present utility model, the B alloy wire 302 that thermal resistance 30 comprises metal sleeve 301 and is located in described metal sleeve 301, in described metal sleeve 301, filled high-temperature sintered oxide 303 is with fixing described B alloy wire 302.Due in the present embodiment, thermal resistance 30 adopts the structure of being filled by metal sleeve 301, B alloy wire 302, high temperature sintering oxide 303 as temperature-sensing element, so, make it have the features such as physical strength is high, good insulation preformance, anti-seismic performance are good, corrosion-resistant, long service life.Thus, the high-temp. wear-proof thermo-couple of the present embodiment is particularly useful for the temperature survey of each point for measuring temperature in the recirculating fluidized bed of large electric power plant station.
Be understandable that, in above-described embodiment, metal base internal layer 101 can adopt stainless steel substrate, to guarantee the physical strength of protection tube 10 and thermal conductivity, the performance such as high temperature resistant, corrosion-resistant.Metal sleeve 301 adopts inconel sleeve pipe, so, can guarantee the physical strength of thermal resistance 30, insulating property, anti-seismic performance, corrosion-resistant, long service life etc.
More favorably, in embodiment of the present utility model, terminal box 20 is threaded with the first end of described protection tube 10, so, connects and dismantles convenient.Set bolt 40 welds with described protection tube 10, to guarantee that this thermopair to be fixed on fastness on external unit and reliability by set bolt 40.
In sum; thermopair of the present utility model have employed the protection of protection tube 10 as thermal resistance of metal base internal layer 101 and tungsten carbon compound alloy outer 102 formation; this protection tube 10 substantially increases anti-wear performance, thoroughly solves existing protection tube and adopts surface spray coating process easily come off in hot environment and greatly reduce the defect of wearing quality.In addition, thermal resistance 30 of the present utility model adopt by metal sleeve 301, B alloy wire 302, high temperature sintering oxide 303 through fill structure as temperature-sensing element, there is the features such as physical strength is high, good insulation preformance, anti-seismic performance are good, corrosion-resistant, long service life.Therefore, high-temp. wear-proof thermo-couple of the present utility model is particularly useful for the temperature survey of each point for measuring temperature in the recirculating fluidized bed of large electric power plant station.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.
Claims (6)
1. a Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple, is characterized in that, comprising:
Protection tube, has first end and the second end, the tungsten carbon compound alloy outer that described protection tube is comprised metal base internal layer and formed by high electric field pulse fusing, gasification at described metal base inner layer outer surface;
Terminal box, described terminal box is fixedly connected on the first end of described protection tube;
Thermal resistance, described thermal resistance is arranged at the inside of the second end of described protection tube and is connected to described terminal box by wire;
Set bolt, described set bolt fixed cover is located on described protection tube.
2. Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple according to claim 1, it is characterized in that, described thermal resistance comprises metal sleeve and is located in the B alloy wire in described metal sleeve, and in described metal sleeve, filled high-temperature sintered oxide is with fixing described B alloy wire.
3. Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple according to claim 1, is characterized in that, described metal base internal layer is stainless steel substrate.
4. Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple according to claim 2, is characterized in that, described metal sleeve is inconel sleeve pipe.
5. Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple according to claim 1, it is characterized in that, described terminal box is threaded with the first end of described protection tube.
6. Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple according to claim 1, it is characterized in that, described set bolt welds with described protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520144595.8U CN204649324U (en) | 2015-03-13 | 2015-03-13 | Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520144595.8U CN204649324U (en) | 2015-03-13 | 2015-03-13 | Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple |
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| CN204649324U true CN204649324U (en) | 2015-09-16 |
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| CN201520144595.8U Expired - Fee Related CN204649324U (en) | 2015-03-13 | 2015-03-13 | Large Steam Turbine Sets special-purpose high temperature abrasion resistant thermocouple |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588111A (en) * | 2021-08-05 | 2021-11-02 | 西安领创电子科技有限公司 | Temperature probe and manufacturing method thereof |
-
2015
- 2015-03-13 CN CN201520144595.8U patent/CN204649324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588111A (en) * | 2021-08-05 | 2021-11-02 | 西安领创电子科技有限公司 | Temperature probe and manufacturing method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20170313 |