CN220187876U - Power station boiler membrane water wall temperature measuring device - Google Patents
Power station boiler membrane water wall temperature measuring device Download PDFInfo
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- CN220187876U CN220187876U CN202321337167.8U CN202321337167U CN220187876U CN 220187876 U CN220187876 U CN 220187876U CN 202321337167 U CN202321337167 U CN 202321337167U CN 220187876 U CN220187876 U CN 220187876U
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- water
- measuring device
- temperature measuring
- wall
- wall temperature
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000012528 membrane Substances 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims abstract description 12
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to a power station boiler membrane water wall temperature measuring device, which comprises: the water cooling wall comprises a plurality of water cooling wall pipes and fins connected with the adjacent water cooling wall pipes, one end of an armored thermocouple is connected with the fins or the water cooling wall pipes or welding seams of the water cooling wall through the fixing blocks, the other end of the armored thermocouple is connected with one end of an armored cold end sleeve, the other end of the armored cold end sleeve is connected with a stress buffer device, a lead extends out of the stress buffer device, a heat shrinkage sleeve is arranged outside the lead, and the lead is connected with a data acquisition system through a wiring fork. Compared with the prior art, the utility model has the advantages of realizing the multipoint wall temperature measurement of the film type water wall tube and the like.
Description
Technical Field
The utility model relates to the technical field of water wall temperature monitoring devices, in particular to a film water wall temperature measuring device for a power station boiler.
Background
The water cooling wall is an evaporation heating surface which is arranged around the hearth and consists of a plurality of parallel pipes, is mainly used for absorbing radiant heat generated by flame and high-temperature flue gas in the furnace, and the flowing medium in the pipes is generally water or a steam-water two-phase mixture, so that the water cooling wall has the functions of cooling and protecting the furnace wall. The flame temperature in the boiler of the modern large-capacity boiler is very high, the intensity of heat radiation is very high, 40-50% or more of heat in the boiler is absorbed by the water-cooled wall, and the water-cooled wall is heated unevenly, so that the phenomena of uneven expansion, tearing, swelling and the like of the water-cooled wall can be caused. The wall temperature of the water wall can reflect the heating condition of the water wall, and the accurate measurement and monitoring of the wall temperature are important to guaranteeing the safe operation of the boiler.
At present, a membrane water-cooling wall is mainly adopted for a coal-fired boiler, because the internal temperature of a hearth is higher, the environment is worse, and at present, a water-cooling wall temperature measuring point is mainly arranged at a connecting pipe of a middle header and an outlet header of the water-cooling wall, wherein the water-cooling wall pipe is not radiated and convected by the hearth, the measured temperature is the temperature of a working medium in the pipe, and the wall temperature conditions of a welding line, fins and the like of the membrane water-cooling wall in a heated area can not be reflected. Some power plants adopt to arrange temperature measuring points on the fire side of the water-cooled wall, but because the fire side is in direct contact with flame in the furnace, under the high-temperature high-ash environment, boiler coking and coke dropping can lead to connecting failure of the measuring points, and the service life and the measuring precision can not be ensured.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a film type water wall temperature measuring device for a power station boiler.
The aim of the utility model can be achieved by the following technical scheme:
a utility boiler membrane wall temperature measurement device, the device comprising: the water cooling wall comprises a plurality of water cooling wall pipes and fins connected with the adjacent water cooling wall pipes, one end of an armored thermocouple is connected with the fins or the water cooling wall pipes or welding seams of the water cooling wall through the fixing blocks, the other end of the armored thermocouple is connected with one end of an armored cold end sleeve, the other end of the armored cold end sleeve is connected with a stress buffer device, a lead extends out of the stress buffer device, a heat shrinkage sleeve is arranged outside the lead, and the lead is connected with a data acquisition system through a wiring fork.
Further, the fixing block is provided with a fastening threaded hole, and the fixing block is fixed on the surface of the fin through a fastening screw penetrating through the fastening threaded hole.
Further, the bottom surface of the fixed block is welded on the surface of the back fire side of the water-cooled wall.
Further, the fixed block is provided with an axial U-shaped groove.
Further, the measuring end of the armored thermocouple extends into the axial U-shaped groove to be fixed.
Further, after the measuring end of the armored thermocouple stretches into the axial U-shaped groove, the part stretching out of the U-shaped groove clings to the fin of the water cooling wall or the water cooling wall pipe or the welding seam.
Further, the armored thermocouple is connected to the armored cold end cap via a cold clip.
Further, the wire fork is a U-shaped wire fork.
Further, the stress buffering means is a spring.
Further, the type of the armored thermocouple is K-type I grade.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The film type water wall temperature measuring device can be arranged at the positions of metal pipes, welding seams, fins and the like of the film type water wall pipe, can realize the multipoint wall temperature measurement of the film type water wall pipe, and can measure the wall temperature of the fins, the welding seams and the like besides the working medium temperature measured by the traditional wall temperature measuring points so as to reflect the integral heating condition and the combustion condition of the film type water wall pipe.
(2) Compared with the fire side mounting mode, the wall temperature measuring device is not in direct contact with the flame of the hearth, and the condition that the connection of the measuring points is invalid due to overhigh temperature and severe environment of the hearth is avoided, so that the service life of the measuring points is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a block diagram of a fixed block of the present utility model;
in the figure, a wire connection fork 1, a heat shrinkage sleeve 2, a lead wire 3, a stress buffer device 4, an armored cold end sleeve 5, an armored thermocouple 6, a fixed block 7, a fastening threaded hole 8,U type groove 9 and a cold clip 10.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
The utility model provides a film water wall temperature measuring device of a power station boiler, and a structure diagram of the device is shown in figure 1. The device comprises: the water cooling wall comprises a plurality of water cooling wall pipes and fins connected with the adjacent water cooling wall pipes, one end of an armored thermocouple 6 is connected with the fins of the water cooling wall or the water cooling wall pipes or a welding seam through the fixing block 7, the other end of the armored thermocouple is connected with one end of an armored cold end sleeve 5, the other end of the armored cold end sleeve 5 is connected with a stress buffer device 4, a lead 3 extends out of the stress buffer device 4, a heat shrinkage sleeve 2 is arranged outside the lead 3, and the lead 3 is connected with a data acquisition system through a wiring fork 1. The heat shrinkage sleeve 2 is sleeved outside the lead 3.
The fixing block 7 is provided with a fastening screw hole 8, and the fixing block 7 is fixed on the surface of the fin by a fastening screw passing through the fastening screw hole 8. The bottom surface of fixed block 7 passes through the welded junction at the water-cooled wall back of the body fire side surface, has avoided the condition that armoured thermocouple 6 appears unexpected dropping in the use to stability after the grafting of armoured thermocouple 6 has been improved.
The fixed block 7 is provided with an axial U-shaped groove 9. The measuring end of the armored thermocouple 6 extends into the U-shaped groove 9 in the axial direction for fixation. After the measuring end of the armored thermocouple 6 stretches into the axial U-shaped groove 9, the part stretching out of the U-shaped groove 9 clings to the fin of the water cooling wall or the water cooling wall pipe or the welding seam, so that data of multiple positions are collected.
The sheathed thermocouple 6 is connected to the sheathed cold end sheath 5 via a cold clip 10.
In some embodiments, wire yoke 1 is a U-shaped wire yoke.
The armored cold end sleeve 5 has the functions of: and (5) packaging the cold end and lead switching structure of the thermocouple.
The stress buffering means 4, the stress buffering means 4 may be a spring, which functions in that: damping shocks or vibrations.
The heat shrinkage sleeve 2 is sleeved outside the lead wire 3 and has the following functions: low temperature shrinkage, softness, flame retardance, insulation and corrosion resistance.
The working principle of the utility model is as follows:
the armored thermocouple 6 is mounted on the surface of the back fire side of the water-cooled wall through the fixing block 7, the armored thermocouple 6 generates electric potential according to different temperatures measured by the measuring end, the electric potential sequentially passes through the armored cold end sleeve 5 and the stress buffering device 4, and is led to a data acquisition system connected with the wiring fork 1 from the lead 3, the data acquisition system acquires electric potential signals, and the temperature is obtained through conversion according to the electric potential signals.
In the utility model, the data acquisition system can collect the obtained temperature data for the data acquisition front end or other devices.
The utility model has the advantages that:
1. the film type water wall temperature measuring device can be arranged at the positions of metal pipes, welding seams, fins and the like of the film type water wall pipe, can realize the multipoint wall temperature measurement of the film type water wall pipe, and can measure the wall temperature of the fins, the welding seams and the like besides the working medium temperature measured by the traditional wall temperature measuring points so as to reflect the integral heating condition and the combustion condition of the film type water wall pipe.
2. Compared with the fire side mounting mode, the wall temperature measuring device is not in direct contact with the flame of the hearth, and the condition that the connection of the measuring points is invalid due to overhigh temperature and severe environment of the hearth is avoided, so that the service life of the measuring points is ensured.
The type of the armoured thermocouple 6 adopted by the utility model is K-type I grade, such as EL-WRKK-133I.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. A utility boiler membrane wall temperature measurement device, the device comprising: install fixed block (7) in water-cooling wall back of the body fire side surface, the water-cooling wall includes a plurality of water-cooling wall pipes and connects the fin of adjacent water-cooling wall pipe, the one end of armoured thermocouple (6) is passed through fixed block (7) and is connected fin or water-cooling wall pipe or welding seam department of water-cooling wall, the one end of armoured cold pot head (5) is connected to the other end, stress buffer (4) is connected to the other end of armoured cold pot head (5), lead wire (3) are stretched out from stress buffer (4), heat shrinkage sleeve (2) are equipped outside lead wire (3), lead wire (3) are connected data acquisition system through wiring fork (1).
2. A plant boiler membrane wall temperature measuring device according to claim 1, characterized in that the fixing block (7) is provided with fastening screw holes (8), and the fixing block (7) is fixed on the fin surface by fastening screws passing through the fastening screw holes (8).
3. The utility boiler membrane wall temperature measuring device according to claim 1, wherein the bottom surface of the fixed block (7) is welded on the back fire side surface of the water wall.
4. A plant boiler membrane wall temperature measuring device according to claim 1, characterized in that the fixed block (7) is provided with an axial U-shaped groove (9).
5. The wall temperature measuring device for the film water wall of the power station boiler according to claim 4, wherein the measuring end of the armored thermocouple (6) extends into the U-shaped groove (9) in the axial direction for fixing.
6. The power station boiler membrane wall temperature measuring device according to claim 5, wherein after the measuring end of the armored thermocouple (6) stretches into the axial U-shaped groove (9), the part stretching out of the U-shaped groove (9) is closely attached to the fin or the water wall tube or the welding seam of the water wall.
7. A plant boiler membrane wall temperature measuring device according to claim 1, characterized in that the armoured thermocouple (6) is connected to the armoured cold end sleeve (5) via a cold clip (10).
8. The utility boiler membrane wall temperature measuring device according to claim 1, wherein the wire fork (1) is a U-shaped wire fork.
9. A plant boiler membrane wall temperature measuring device according to claim 1, characterized in that the stress buffering means (4) is a spring.
10. A plant boiler membrane wall temperature measuring device according to claim 1, characterized in that the armoured thermocouple (6) is of type K class i.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321337167.8U CN220187876U (en) | 2023-05-30 | 2023-05-30 | Power station boiler membrane water wall temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321337167.8U CN220187876U (en) | 2023-05-30 | 2023-05-30 | Power station boiler membrane water wall temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220187876U true CN220187876U (en) | 2023-12-15 |
Family
ID=89111867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321337167.8U Active CN220187876U (en) | 2023-05-30 | 2023-05-30 | Power station boiler membrane water wall temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220187876U (en) |
-
2023
- 2023-05-30 CN CN202321337167.8U patent/CN220187876U/en active Active
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