CN216621503U - Boiler final superheater temperature measuring device - Google Patents
Boiler final superheater temperature measuring device Download PDFInfo
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- CN216621503U CN216621503U CN202122639181.0U CN202122639181U CN216621503U CN 216621503 U CN216621503 U CN 216621503U CN 202122639181 U CN202122639181 U CN 202122639181U CN 216621503 U CN216621503 U CN 216621503U
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- thermocouple
- temperature
- wall
- superheater
- pressing plate
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Abstract
The utility model provides a temperature measuring device for a boiler final superheater. The utility model comprises a wall temperature thermocouple of a high-temperature heating surface of a screen superheater, wherein the thermocouple is an armored thermocouple, a protective tube in the form of a heat collection block is sleeved outside the armored thermocouple, the protective tube comprises a mother plate and a pressing plate, the radian of the mother plate is the same as that of a tube wall, the radian of the pressing plate is the same as that of the outer wall of the thermocouple, the pressing plate is buckled on the thermocouple, two sides of the pressing plate are fixed on the mother plate, and the mother plate is welded on the high-temperature heating wall of the screen superheater. The utility model has simple structure and convenient installation, is suitable for the temperature measuring environment of a high-temperature hearth, prepares corresponding length and radian according to the required insertion length and pipe diameter, is fixed by being tightly adhered to the pipe wall in a spot welding way, and can effectively avoid the damage of a thermocouple caused by a high-temperature furnace wall by cooling a temperature element by virtue of steam in a superheater pipeline.
Description
Technical Field
The utility model relates to the technical field of boiler superheaters, in particular to a temperature measuring device for a boiler final superheater.
Background
The boiler superheater of the thermal power plant is subjected to overtemperature pipe explosion, and the safe operation of the unit is directly threatened. In order to prevent such accidents, the tube wall temperature of the superheater needs to be accurately measured for a long time, real-time monitoring is enhanced, and the potential over-temperature hazard is eliminated by mastering the change condition of the tube wall temperature of the superheater.
Because the temperature of the hearth exceeds the range of the thermocouple, the common thermocouple cannot monitor the temperature of the inner wall of the high-temperature heating surface in real time for a long time under the existing test condition, the temperature of the inner wall of the furnace can be estimated only by measuring the temperature of the outer wall of the furnace, even if a test point is installed, an armored thermocouple wire is easy to burn out due to the washing of high-temperature smoke gas in the furnace, the loss of consumable materials is serious within several hours generally, and the operation of a unit is seriously influenced by the replacement after the thermocouple is failed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned technical problem, a temperature measuring device for a boiler final superheater is provided.
The technical means adopted by the utility model are as follows:
the utility model provides a boiler final superheater temperature measuring device, includes screen superheater high temperature heating surface wall temperature thermocouple, the thermocouple is the armor thermocouple, the protection tube of thermal-arrest piece form is cup jointed to armor thermocouple outside, the protection tube includes mother board and clamp plate, the radian of mother board is the same with the pipe wall, the radian of clamp plate is the same with the outer wall of thermocouple, the clamp plate lock joint is on the thermocouple, and its both sides are fixed on the mother board, the mother board welding is on screen superheater high temperature heated wall.
Furthermore, the armored thermocouple is arranged on a heat exchange pipeline on the outermost side of the platen superheater, and steam passing through the heat exchanger is used for cooling the thermocouple for measuring the wall temperature.
Furthermore, the upper end of the armored thermocouple is connected with a compensation wire, and the end of the compensation wire is provided with a wiring terminal.
Further, the lower end of the compensation wire is connected with a spring.
Furthermore, the end of the mother board is provided with a stainless steel cable tie, and the stainless steel cable tie is used for fixing the protection pipe on the mother board.
The utility model has simple structure and convenient installation, is suitable for the temperature measuring environment of the high-temperature hearth, prepares corresponding length and radian according to the required insertion length and pipe diameter, is fixed by being tightly adhered to the pipe wall in a spot welding way, reduces the temperature of the temperature element by means of steam in the pipeline of the superheater, and can effectively avoid the damage of the high-temperature furnace wall to the thermocouple.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a thermocouple according to the present invention.
Fig. 2 is a schematic view of the installation state of the present invention.
In the figure: 1. a thermocouple; 2. a motherboard; 3. pressing a plate; 4. a stainless steel ribbon; 5. a high-temperature heated wall of the platen superheater; 6. a spring; 7. and a compensation wire.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the utility model discloses a temperature measuring device for a boiler final superheater, which comprises a wall temperature thermocouple of a high-temperature heated surface of a platen superheater, wherein the thermocouple 1 is an armored thermocouple, a protective tube in the form of a heat collection block is sleeved outside the armored thermocouple, the protective tube comprises a mother plate 2 and a pressing plate 3, the radian of the mother plate is the same as that of a tube wall (the high-temperature heated wall of the platen superheater), the radian of the pressing plate is the same as that of the outer wall of the thermocouple, the pressing plate is buckled on the thermocouple, two sides of the pressing plate are fixed on the mother plate, and the mother plate is welded on the high-temperature heated wall 5 of the platen superheater.
The armored thermocouple is arranged on the heat exchange pipeline on the outermost side of the platen superheater, steam passing through the heat exchanger is used for cooling the thermocouple for measuring the wall temperature, and the steam in the superheater pipeline is used for cooling the temperature element, so that the damage of the high-temperature furnace wall to the thermocouple can be effectively avoided. The thermocouple can still be effectively monitored in real time after being installed for 2 months, and the service life of the thermocouple in the high-temperature hearth temperature measurement environment is prolonged.
The armored thermocouple adopted by the utility model can be conventional in the prior art, and specifically, the upper end of the armored thermocouple is connected with a compensation lead 7, and the end of the compensation lead is provided with a connecting terminal. The lower end of the compensation wire is connected with a spring 6. In an alternative embodiment, the thermocouple wire is in a twisted pair structure, the outer tube of the thermocouple wire is made of alloy materials, and the inner part of the thermocouple wire is filled with insulating fillers.
For further reinforcement, the ends of the mother plate are provided with stainless steel ties 4 for fixing the protective tubes to the mother plate.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The temperature measuring device for the boiler final superheater is characterized by comprising a wall temperature thermocouple of a high-temperature heating surface of a screen superheater, wherein the thermocouple is an armored thermocouple, a protective tube in a heat collecting block form is sleeved outside the armored thermocouple, the protective tube comprises a mother plate and a pressing plate, the radian of the mother plate is identical to that of a tube wall, the radian of the pressing plate is identical to that of the outer wall of the thermocouple, the pressing plate is buckled on the thermocouple, two sides of the pressing plate are fixed on the mother plate, and the mother plate is welded on the high-temperature heating wall of the screen superheater.
2. A boiler finishing superheater temperature measuring apparatus in accordance with claim 1, wherein said sheathed thermocouple is disposed on an outermost heat exchange line of said platen superheater, and steam passing through the heat exchanger cools a thermocouple for measuring wall temperature.
3. The boiler finishing superheater temperature measuring device of claim 1, wherein a compensation wire is connected to an upper end of the armored thermocouple, and a terminal is disposed at an end of the compensation wire.
4. The boiler finishing superheater temperature measuring apparatus of claim 3, wherein a spring is connected to a lower end of said compensation wire.
5. The boiler finishing superheater temperature measuring device of claim 1, wherein an end of said mother plate is provided with a stainless steel tie for securing said protection tube to the mother plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639181.0U CN216621503U (en) | 2021-10-29 | 2021-10-29 | Boiler final superheater temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639181.0U CN216621503U (en) | 2021-10-29 | 2021-10-29 | Boiler final superheater temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216621503U true CN216621503U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122639181.0U Active CN216621503U (en) | 2021-10-29 | 2021-10-29 | Boiler final superheater temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216621503U (en) |
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2021
- 2021-10-29 CN CN202122639181.0U patent/CN216621503U/en active Active
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