CN206056805U - High temperature cigarette temperature sensing device - Google Patents
High temperature cigarette temperature sensing device Download PDFInfo
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- CN206056805U CN206056805U CN201621051061.1U CN201621051061U CN206056805U CN 206056805 U CN206056805 U CN 206056805U CN 201621051061 U CN201621051061 U CN 201621051061U CN 206056805 U CN206056805 U CN 206056805U
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- thermocouple
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Abstract
A kind of high temperature cigarette temperature sensing device for half radiation area convection pass of power station tower boiler, including：Temperature measuring mechanism, thermocouple derivation mechanism, base fixing mechanism, bindiny mechanism and the end release mechanism set gradually along furnace chamber width, wherein：Temperature measuring mechanism, thermocouple derivation mechanism and base fixing mechanism are fixedly connected sequentially, and base fixing mechanism is fixedly installed on the fin of a side wall, and thermocouple derivation mechanism stretches into burner hearth through base fixing mechanism；End release mechanism is located at end of the thermocouple derivation mechanism in burner hearth part；Temperature measuring mechanism is thermocouple；This utility model is safe and reliable, economical, can with the supporting setting of lineal Large Copacity power station tower boiler, and can with the inside of existing pot monitor analytical technology combine, realize on the inside of the tower boiler pot of power station with stove on the inside of technical tie-up.
Description
Technical field
The utility model relates to a kind of technology of station boiler detection field, specifically one kind is preferably applied to power station
The high temperature cigarette temperature sensing device of half radiation area convection pass of tower boiler.
Background technology
Station boiler great majority are, based on fire coal, because of the Frequent Accidents of abnormal generation of burning in stove, power plant to be run
Reliability, safety and economic influence it is larger.As boiler combustion is that, in a sealing space, size of burner hearth is huge, its
The control difficulty of combustion position and furnace exit temperature is larger.According to tower boiler inherently characteristic, except air preheater institute
There is heating surface to be all disposed within vertical gas pass, during using Terms of Corner Tangential Combustion, the flue gas in rotation status passes through heating surface
When through turning.Therefore, in tower boiler burner hearth ionized motion, the impact rotated to heating surface is few for the flue gas of rotation,
Can guarantee that heating surface thermally equivalent.As burner air distribution is improper or indivedual burner operations are abnormal, cause flame kernel inclined
To side, whole fire box temperature field also offsets therewith, while can also affect the uniformity of the distribution of high-temperature flue gas in flue, cause from
Flue gas thermic load is higher downstream for the closer location of flame kernel deflection；And position cigarette downstream farther out is partial to away from flame kernel
Gas thermic load is relatively low.As long-time is by fume side heat load distribution inequality in half radiation area flue, with high flue gas thermic load
The heating surface of contact, increases its steel thermal stress, and when serious, meeting booster, affects its life-span；With receiving that low flue gas thermic load is contacted
Hot face, then because of deficiency of being heated, cause working medium temperature rise not reach preset value, directly affect economy.
The cigarette temperature of furnace outlet has direct relation with economy, and weighs boiler design, the important indicator of combustibility
One of, when furnace outlet gas temperature off-design value is larger, explanation is that burning is degrading in stove to be caused.Such as ash erosion,
Evaporating heating surface caloric receptivity is reduced, and furnace outlet gas temperature can be caused to raise, caused exhaust gas temperature to raise, thus can be reduced boiler
Operating thermal efficiency；Further, since furnace outlet gas temperature is raised, superheater and reheater can be caused to increase its metal because temperature is too high
Thermal stress, can occur booster when serious.As the burning tissues in stove are bad, burning deteriorates, and furnace outlet gas temperature is reduced, and causes pot
Stove does not reach specified operational factor, can affect the performance driving economy of boiler yet.
For the cigarette temperature characteristics of Large Copacity power station tower boiler heating surface inherently attribute and half radiation area of the type of furnace, from
Generating equipment runs safe and reliable and economy point, it is necessary to research and develop a kind of half radiation areas high-temperature flue gas temperature of real-time monitoring
The device of degree, in the half radiation area flue of reason and abatement to definite control tower boiler high-temperature surface booster, fume side heat is inclined
Difference plays a part of to get instant result.
Utility model content
This utility model is limited for the jib-length of existing sensor and cannot be applied to boiler for high power station etc.
Defect, proposes a kind of high temperature cigarette temperature sensing device, by the analysis to convection pass internal heating surface arrangement and cigarette temperature characteristics, according to
High-temperature surface imports and exports cigarette temperature, and the mode arranged in high-temperature surface section with reference to the series of temperatures sensing device and point
Number, can start to complete monitoring is carried out at full capacity, to distinguish section cigarette temperature distribution situation in the flue from boiler startup, real
When monitor the heat load distribution of the region section fume side.
This utility model is achieved through the following technical solutions：
This utility model includes：The temperature measuring mechanism that sets gradually along furnace chamber width, thermocouple derivation mechanism, pedestal are solid
Determine mechanism, bindiny mechanism and end release mechanism, wherein：Temperature measuring mechanism, thermocouple derivation mechanism and base fixing mechanism are successively
It is fixedly connected, base fixing mechanism is fixedly installed on the fin of a side wall, thermocouple derivation mechanism is fixed through pedestal
Mechanism stretches into burner hearth；End release mechanism is located at end of the thermocouple derivation mechanism in burner hearth part.
Described temperature measuring mechanism is branched thermocouple.
Described thermocouple derivation mechanism includes：Boss big envelope, upper flange and the protecting tube for setting gradually, its
In：Boss big envelope and protecting tube are fixedly connected with upper flange respectively.
Thermocouple access aperture is respectively provided with two raised head faces of described boss big envelope.
The cigarette face of meeting of described protecting tube scribbles high-temperature and wear-proof.
Described thermocouple is socketed in protecting tube through boss big envelope.
Described thermocouple is positioned on boss big envelope by locking nut.
Described base fixing mechanism includes：Lower flange, seal box and fixed sleeving, wherein：Fixed sleeving is arranged at close
In jacket, one end of fixed sleeving is passed seal box and is fixedly connected with lower flange, and the other end is fixedly connected with the fin of water-cooling wall.
Described lower flange is connected by securing member with upper flange.
Described seal box constitutes semi-closed structure by five blocks of steel plates, and four for being sequentially connected piece Interal fixation is arranged at water-cooled
On the fin of wall, seal box constitutes confined space with water-cooling wall.
Described protecting tube is through the fixed sleeving being fixed in seal box.
Described fixed sleeving is provided with high temperature resistant rock wool on the outside of the part in seal box.
Described bindiny mechanism includes：Sleeve pipe, support otic placode, adjustable plate, high temperature resistant securing member, one piece big profiling backplate and
Two pieces little profiling backplates, wherein：Two pieces little profiling backplates be arranged in parallel, and are respectively fixedly connected with composition pipe clamp with big profiling backplate
Structure；Adjustable plate is fixedly connected with big profiling backplate, and adjustable plate both sides pass through high temperature resistant securing member and two pieces of support otic placodes respectively
It is connected；Otic placode is supported to be connected with the side wall of sleeve pipe.
Described sleeve pipe is arranged at the outside of protecting tube.
Described pipe clamp structure is fixedly installed in the outer race tube of heating surface tube panel.
High-abrasive material is coated with described pipe clamp structure and the contact surface of outer race tube.
Described adjustable plate is provided with waist round hole.
Described sleeve pipe is provided with clamping screw.
Described end release mechanism is breaker bolt.
Technique effect
Compared with prior art, this utility model absorbs the mature technology of traditional thermocouple temperature measurement method, simple structure
And it is easy to use the characteristics of, by choosing new material, improving the modes such as processing technique and measuring method, optimization outer protection pipe,
Coordinate the arrangement form and points, the high temperature cigarette temperature in half radiation area convection pass of real-time monitoring in stove, meet measurement demand, and
The fume side data boundary in the region can be excavated, is that product lays the foundation on the inside of research and development stove.
Description of the drawings
Fig. 1 is this utility model schematic diagram；
Fig. 2 is I magnified partial view in Fig. 1；
Fig. 3 is boss big envelope A to sectional view；
Fig. 4 is II magnified partial view in Fig. 1；
Section B-B figures of the Fig. 5 for Fig. 4；
Fig. 6 is III magnified partial view in Fig. 1；
Fig. 7 is this utility model bilateral temperature measuring mechanism scheme of installation；
Fig. 8 is this utility model one side temperature measuring mechanism scheme of installation；
In figure：1 is temperature measuring mechanism, 2 is thermocouple derivation mechanism, 3 is base fixing mechanism, 4 is bindiny mechanism, 5 is to lock
Tight bolt, 6 be end release mechanism, 7 be thermocouple, 8 be locking nut, 9 be boss big envelope, 10 be upper flange, 11 be purgation
It is blue, 12 be securing member, 13 be fixed sleeving, 14 be seal box, 15 be protecting tube, 16 be high temperature resistant rock wool, 17 for
Support otic placode, 18 be sleeve pipe, 19 be adjustable plate, 20 be big profiling backplate, 21 be little profiling backplate, 22 be breaker bolt, 23 be by
Hot facial canal screen, 24 are high temperature resistant securing member.
Specific embodiment
Below embodiment of the present utility model is elaborated, the present embodiment is with technical solutions of the utility model as front
Put and implemented, give detailed embodiment and specific operating process, but protection domain of the present utility model is not limited
In following embodiments.
Embodiment 1
As shown in figure 1, the present embodiment includes：The temperature measuring mechanism 1 that sets gradually along furnace chamber width, thermocouple extractor
Structure 2, base fixing mechanism 3, bindiny mechanism 4 and end release mechanism 6, wherein：Temperature measuring mechanism 1, thermocouple derivation mechanism 2 and base
Seat fixed mechanism 3 is fixedly connected sequentially, and base fixing mechanism 3 is fixedly installed on the fin of a side wall, and thermocouple is drawn
Mechanism 2 stretches into burner hearth through base fixing mechanism 3；End release mechanism 6 is located at end of the thermocouple derivation mechanism 2 in burner hearth part
End.
As shown in Fig. 2 described temperature measuring mechanism 1 is branched thermocouple 7, the length and specification of each thermocouple 7.
The end of described thermocouple 7 can be drilled with flue gas opening, to shorten during the response of the measurement high-temperature flue gas of thermocouple 7
Between.
Described thermocouple derivation mechanism 2 includes：Boss big envelope 9, upper flange 10 and the protecting tube for setting gradually
15, wherein：Boss big envelope 9 and protecting tube 15 are fixedly connected with upper flange 10 respectively.
As shown in figure 3, being respectively provided with thermocouple access aperture on two raised head faces of described boss big envelope 9.
The cigarette face of meeting of described protecting tube 15 scribbles high-temperature and wear-proof with Wear-proof.
Described protecting tube 15 adopts 0Cr25Ni20 materials.
The thickness of described high-temperature and wear-proof is 0.5mm.
Described thermocouple 7 is socketed in protecting tube 15 through boss big envelope 9.
Described thermocouple 7 is positioned on boss big envelope 9 by locking nut 8.
Described base fixing mechanism 3 includes：Lower flange 11, seal box 14 and fixed sleeving 13, wherein：Fixed sleeving 13
It is arranged in seal box 14, one end of fixed sleeving 13 is passed seal box 14 and is fixedly connected with lower flange 11, the other end and water-cooled
The fin of wall is fixedly connected.
Described lower flange 11 is connected by securing member 12 with upper flange 10.
Described seal box 14 constitutes semi-closed structure by five blocks of steel plates, and four for being sequentially connected piece Interal fixation is arranged at water
On the fin of cold wall, seal box 14 constitutes confined space with water-cooling wall.
Described protecting tube 15 is through the fixed sleeving 13 being fixed in seal box 14.
Described fixed sleeving 13 is provided with high temperature resistant rock wool 16 on the outside of the part in seal box 14.
As shown in Figure 4 and Figure 5, described bindiny mechanism 5 includes：Sleeve pipe 18, support otic placode 17, adjustable plate 19, high temperature resistant
The big profiling backplate 20 of 24, one piece of securing member and two pieces little profiling backplates 21, wherein：Two pieces little profiling backplates 21 be arranged in parallel, and
Composition pipe clamp structure is respectively fixedly connected with big profiling backplate 20；Adjustable plate 19 is fixedly connected with big profiling backplate 20, adjustable plate
19 both sides support otic placode 17 to be connected with two pieces by high temperature resistant securing member 24 respectively；Support the side wall phase of otic placode 17 and sleeve pipe 18
Even.
Described sleeve pipe 18 is arranged at the outside of protecting tube 15.
Described pipe clamp structure is fixedly installed in the outer race tube of heating surface tube panel 23.
High-abrasive material is coated with described pipe clamp structure and the contact surface of outer race tube.
Described adjustable plate 19 is provided with waist round hole.
Described sleeve pipe 18 is provided with clamping screw 5.
It is high in caused structure because of longtime running that described waist round hole makes up heating surface tube panel 23 jointly with clamping screw 5
The dimensional discrepancy in low direction.
The position of described bindiny mechanism 4 depends primarily on the tubing coefficient of expansion of protecting tube 15, intensity and just
Degree.
Described clamping screw 5 is screwed into the amount of putting in sleeve pipe 18 by which, controls freely living for protecting tube 15
Dynamic scope, at the same consider protecting tube 15 from deashing function, swell increment, the buckles of flue gas flow rate and frequency of vibration.
As shown in fig. 6, described end release mechanism 6 is breaker bolt 22.
Described breaker bolt 22 is arranged on the protecting tube 15 in burner hearth.
The quantity of described thermocouple 7 can be determined according to the internal diameter size of protecting tube 15 and monitoring purpose.
Described breaker bolt 22 can prevent the particulate matter in the running of protecting tube 15, in high-temperature flue gas
And the potential safety hazard that the complex condition such as impulsive force failure of soot blower when working brings.
To control the present embodiment frequency of vibration operationally, the present embodiment is using clamping screw 5 to protecting tube
15 carry out absorbing itself thermal expansion and the design from ash-removal effect.
The working condition of the present embodiment is flue-gas temperature 1000, and the half radiation area flue of cigarette speed 12m/s is fixedly connected mode
It is welding.
The present embodiment can be fixed using support or sus-pension in stove.
As shown in Figure 7 and Figure 8, the present embodiment can be pacified by the way of unidirectional temperature measuring mechanism or two-way temperature measuring mechanism
Dress.
The present embodiment transmits the temperature signal of thermocouple 7 to special-purpose computer, by customizing software Real-time Collection cigarette temperature
Data, record in engineering data base.
The present embodiment is by with reference to arrangement form and points in stove, half radiation area section fume side thermic load of real-time monitoring point
Cloth.
The present embodiment is by dividing to half radiation area convection pass internal heating surface of power station tower boiler arrangement and cigarette temperature characteristics
Analysis, Rational choice material, optimized Structure Design, and consider the influence factor that medium brings on the inside of stove under each operating mode so that
For a long time, accurately, the stable high-temperature flue-gas for being measured in the type of furnace convection pass in real time are possibly realized.
The present embodiment mainly from supercritical, ultra supercritical power station tower boiler combustion system, coal data analysis and is detected
In analysing combustion products, relevant ash sample data are started with, and according to monitoring meanss on the inside of existing pot, analyze the regularity of distribution of absorbing heat on the inside of pot,
Measure dot number and arrangement form on the inside of reasonable Arrangement stove；Not affect the safe operation of boiler as the most important condition, with reference to heat transfer
Based on ultimate principle and Simulation of depth temperature sensing device working environment, the device each several part selection is considered, weight
Half radiation area high-temperature flue gas of point research tower boiler are to the high temperature resistant of temperature element in device and protection pipe, erosion resistant, intensity, just
The impact of the factors such as degree, vibration, thermal expansion, dust stratification, resonance, shock and transport.
Claims (7)
1. a kind of high temperature cigarette temperature sensing device, it is characterised in that include：The temperature measuring mechanism that sets gradually along furnace chamber width,
Thermocouple derivation mechanism, base fixing mechanism, bindiny mechanism and end release mechanism, wherein：Temperature measuring mechanism, thermocouple extractor
Structure and base fixing mechanism are fixedly connected sequentially, and base fixing mechanism is fixedly installed on the fin of a side wall, thermocouple
Derivation mechanism stretches into burner hearth through base fixing mechanism；End release mechanism is located at end of the thermocouple derivation mechanism in burner hearth part
End.
2. high temperature cigarette temperature sensing device according to claim 1, is characterized in that, described thermocouple derivation mechanism includes：
Boss big envelope, upper flange and the protecting tube for setting gradually, wherein：Boss big envelope and protecting tube respectively with upper method
Orchid is fixedly connected.
3. high temperature cigarette temperature sensing device according to claim 1, is characterized in that, described base fixing mechanism includes：Under
Flange, seal box and fixed sleeving, wherein：Fixed sleeving is arranged in seal box, one end of fixed sleeving pass seal box with
Lower flange is fixedly connected, and the other end is fixedly connected with the fin of water-cooling wall.
4. high temperature cigarette temperature sensing device according to claim 1, is characterized in that, described bindiny mechanism includes：Sleeve pipe,
Support otic placode, adjustable plate, high temperature resistant securing member, one piece big profiling backplate and two pieces little profiling backplates, wherein：Two pieces little profiling backplates
Be arranged in parallel, and composition pipe clamp structure is respectively fixedly connected with big profiling backplate；Adjustable plate is fixedly connected with big profiling backplate, is adjusted
Section plate both sides support otic placode to be connected with two pieces by high temperature resistant securing member respectively；Otic placode is supported to be connected with the side wall of sleeve pipe.
5. high temperature cigarette temperature sensing device according to claim 1, is characterized in that, described temperature measuring mechanism is branched thermoelectricity
It is even.
6. high temperature cigarette temperature sensing device according to claim 2, is characterized in that, two boss ends of described boss big envelope
Thermocouple access aperture is respectively provided with face, described thermocouple is socketed in protecting tube and by locking through boss big envelope
Nut is positioned on boss big envelope.
7. high temperature cigarette temperature sensing device according to claim 4, is characterized in that, described pipe clamp structure is fixedly installed on to be received
In the outer race tube of hot facial canal screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051061.1U CN206056805U (en) | 2016-09-12 | 2016-09-12 | High temperature cigarette temperature sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051061.1U CN206056805U (en) | 2016-09-12 | 2016-09-12 | High temperature cigarette temperature sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206056805U true CN206056805U (en) | 2017-03-29 |
Family
ID=58370247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621051061.1U Active CN206056805U (en) | 2016-09-12 | 2016-09-12 | High temperature cigarette temperature sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206056805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399470A (en) * | 2023-02-28 | 2023-07-07 | 国能锅炉压力容器检验有限公司 | Device and method for monitoring temperature of fire side of water-cooled wall of power station boiler |
-
2016
- 2016-09-12 CN CN201621051061.1U patent/CN206056805U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399470A (en) * | 2023-02-28 | 2023-07-07 | 国能锅炉压力容器检验有限公司 | Device and method for monitoring temperature of fire side of water-cooled wall of power station boiler |
| CN116399470B (en) * | 2023-02-28 | 2023-09-26 | 国能锅炉压力容器检验有限公司 | Device and method for monitoring temperature of fire side of water-cooled wall of power station boiler |
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