CN113447154A - Monitoring device and monitoring method for wall temperature measuring point of fire-facing surface of water-cooled wall - Google Patents
Monitoring device and monitoring method for wall temperature measuring point of fire-facing surface of water-cooled wall Download PDFInfo
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- CN113447154A CN113447154A CN202110722276.0A CN202110722276A CN113447154A CN 113447154 A CN113447154 A CN 113447154A CN 202110722276 A CN202110722276 A CN 202110722276A CN 113447154 A CN113447154 A CN 113447154A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/04—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials
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Abstract
The invention discloses a monitoring device and a monitoring method for a water-cooled wall fire-facing surface wall temperature measuring point. The invention belongs to the technical field of water-cooled wall monitoring devices, and aims to solve the problem that in the prior art, the wall temperature is difficult to accurately measure when the thermal load of a boiler hearth is relatively high, the temperature change rate is too high, and the amplitude is too large. The technical effects achieved are as follows: the device has simple structure, small maintenance amount and convenient maintenance; when the wall temperature of the water wall pipe changes greatly and exceeds an alarm value, a worker can accurately master the real state of the wall temperature of the water wall through the device, and the device can regulate and control in time to ensure long-period safe operation of the water wall pipe.
Description
Technical Field
The invention relates to the technical field of water-cooled wall monitoring devices, in particular to a monitoring device for a water-cooled wall fire-facing surface wall temperature measuring point and a monitoring method of the monitoring device for the water-cooled wall fire-facing surface wall temperature measuring point.
Background
The leakage of four pipes of a power station boiler of a thermal power plant occurs sometimes, and the leakage of four pipes directly threatens the safe and stable operation of a generator set. According to statistics: the leakage frequency of the boiler water wall explosion tube accounts for about 80% of the total leakage. The reason of the burst of the water wall is that the water wall is overheated in a short period caused by the blockage of foreign matters, so that the burst is formed. And the other parts of the pipe wall are subjected to thermal fatigue due to the rapid fluctuation of the temperature of the pipe wall, so that the toughness of the material is reduced, cracks are generated, and further, the pipe explosion accident is caused. The existing measuring points of the boiler water wall can not accurately monitor the real state of the wall temperature of the water wall in the boiler, so that the analysis and the solution of the water wall tube explosion accident become the problems to be solved urgently for improving the safety and the economical efficiency of a unit.
At present, an intermediate header inlet is arranged at an original lower water-cooled wall temperature measuring point of a boiler in a thermal power plant, although each water-cooled wall measuring point can reflect the variation trend among pipes, the measuring point is positioned outside the boiler, the test data of the measuring point is close to the temperature of a medium in the pipe, and the temperature state of the pipe wall in the boiler cannot be truly reflected, so once the alarm value is improperly designed, when an operator operates by taking the alarm value as a safety line, the temperature of the pipe wall in the boiler exceeds the allowable temperature, and overtemperature pipe explosion is easily caused after long-term operation. The method has the advantages that scientific guidance is provided for the operation of the unit for truly and accurately reflecting the true state of the wall temperature of the water cooling wall, the long-period safe and stable operation of the boiler is ensured, technical attack is carried out on the phenomenon that the original measuring point of the boiler of the thermal power plant cannot truly reflect the rapid change of the wall temperature of the water cooling wall with the rapid fluctuation of the load in the boiler by a large margin, and the measured data are ensured to be true, accurate and reliable.
Disclosure of Invention
Therefore, the invention provides a monitoring device and a monitoring method for a wall temperature measuring point of a fire facing surface of a water-cooled wall, and aims to solve the problems that in the prior art, the heat load of a boiler furnace is relatively high, the temperature change rate is too high, and the wall temperature is difficult to accurately measure when the amplitude is too large.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to the first aspect of the invention, the monitoring device for the temperature measuring point of the fire wall facing the fire surface comprises a temperature measuring component, a protection sleeve component and a connecting component, wherein the temperature measuring component is inserted on the protection sleeve component, one end of the temperature measuring component is detachably connected with one end of the protection sleeve component, and the protection sleeve component is connected with a water wall pipe through the connecting component.
Furthermore, the temperature measuring component comprises a temperature measuring thermocouple, a thermocouple junction box and a thermocouple output end, and the thermocouple junction box is detachably connected with the protection sleeve component;
one end of the temperature thermocouple is inserted in the thermocouple junction box, the other end of the temperature thermocouple is inserted in the protective sleeve component, and the temperature thermocouple is completely covered by the structure formed by combining the thermocouple junction box and the temperature thermocouple;
and a thermocouple output end is arranged on the side surface of the thermocouple junction box.
Furthermore, the connecting assembly comprises a temperature measuring tube seat, one end of the temperature measuring tube seat is connected with the protective sleeve assembly, and the other end of the temperature measuring tube seat is connected with the water wall tube.
Furthermore, the protection sleeve assembly further comprises a compression nut, and the compression nut is sleeved on the thermocouple sleeve.
Furthermore, the connecting assembly comprises a temperature measuring tube seat and a connecting sleeve, the connecting sleeve is sleeved on the protection sleeve assembly, one end of the temperature measuring tube seat is connected with the connecting sleeve, and the other end of the temperature measuring tube seat is connected with the water wall tube.
Further, the cross-sectional shape of the thermowell is a circular ring.
Furthermore, the thermowell is made of high-temperature resistant stainless steel.
Furthermore, the compression nut is made of high-temperature-resistant stainless steel.
Further, the thermowell has a length ranging from 300mm to 350 mm.
According to the monitoring method of the monitoring device for the water wall fire surface wall temperature measuring point in the second aspect of the invention, all the technical characteristics of the monitoring device for the water wall fire surface wall temperature measuring point in the first aspect of the invention are used, and the monitoring method further comprises the following steps:
step S100, calculating the opening strength of the water wall tube, and analyzing the internal pressure stress of the water wall tube by adopting a structural analysis finite element program ANSYS through a calculation model and boundary conditions, wherein the maximum principal stress of the opening part of the temperature measuring tube theoretically meets the strength requirement;
s200, intercepting a section of water wall tube, transversely forming a hole in the water wall tube, and carrying out photographic detection on the opening position of the water wall tube to ensure that the opening position is at the central position of the water wall tube;
step S300, manufacturing a temperature measuring assembly, a protection sleeve assembly and a connecting assembly and connecting the temperature measuring assembly, the protection sleeve assembly and the connecting assembly;
and S400, welding and installing the temperature measuring tube seat and the water wall, and performing nondestructive inspection on the weld crater of the water wall to be qualified.
The invention has the following advantages: the real state of the wall temperature of the water wall pipe can be truly reflected through the arrangement of the temperature measuring component, and the temperature measuring component is sleeved with the protective sleeve component, so that the temperature measuring component realizes the fixed connection of the outer part of the heating surface through the sleeve component, and further the long-time safe operation of the device is ensured; the device has simple structure, small maintenance amount and convenient maintenance; when the wall temperature of the water wall pipe changes greatly and exceeds an alarm value, a worker can accurately master the real state of the wall temperature of the water wall through the device, and the device can regulate and control in time to ensure long-period safe operation of the water wall pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a block diagram of a monitoring device for measuring the temperature of a water wall to a fire surface according to some embodiments of the present invention.
FIG. 2 is a partial block diagram of a monitoring device for measuring the temperature of a water wall toward a fire surface according to some embodiments of the present invention.
Fig. 3 is a second partial structural diagram of a monitoring device for measuring the temperature of a water wall toward a fire surface according to some embodiments of the present invention.
FIG. 4 is a schematic view of a temperature tube seat welded to a water wall tube of a monitoring device for a fire wall temperature measurement point of a water wall according to some embodiments of the present invention.
FIG. 5 is a block diagram of wall temperature measurement points of a water wall of a monitoring device for measuring wall temperature of a fire wall according to some embodiments of the present invention.
FIG. 6 is a water wall temperature field curve of a monitoring device for water wall to fire wall temperature measurement points according to some embodiments of the present invention.
In the figure: 1. the thermocouple junction box comprises a thermocouple junction box body 2, a thermocouple sleeve 3, a compression nut 4, a connecting sleeve 6, a temperature thermocouple 8, a thermocouple output end 10, a temperature tube base 11 and a water wall tube.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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 to 5, in an embodiment of the first aspect of the present invention, a monitoring device for a water-cooled wall fire-facing wall temperature measurement point includes a temperature measurement component, a protection sleeve component and a connection component, the temperature measurement component is inserted on the protection sleeve component, one end of the temperature measurement component is detachably connected to one end of the protection sleeve component, and the protection sleeve component is connected to a water-cooled wall tube 11 through the connection component.
In the above embodiment, it should be noted that, preferably, the protection sleeve assembly is circular, and the protection sleeve assembly may be made of one high temperature resistant stainless steel pipe or may be made of multiple high temperature resistant stainless steel pipes; the temperature measuring component can be made of a temperature measuring thermocouple 6 and can also be made of a high-temperature resistant temperature sensor arranged on the metal pipe; the connecting assembly can be made of an independent connecting sleeve, the connecting sleeve is sleeved on the protective sleeve assembly and is directly welded with the water wall tube 11, the connecting sleeve can be also matched with the temperature tube seat 10 and can be made of an independent temperature tube seat 10, the temperature tube seat 10 is welded on the water wall tube 11, the connecting sleeve is sleeved on the protective sleeve assembly, and the connecting sleeve is welded or in threaded connection with the temperature tube seat 10; specifically, the water wall tube 11 is provided with a hole, the temperature measuring assembly is inserted into the hole formed in the water wall tube 11, and the connecting assembly is welded or screwed with the water wall tube 11 and is located on the outer peripheral side of the water wall tube 11.
Preferably, the connection assembly is connected to the waterwall tubes 11.
The technical effects achieved by the above embodiment are as follows: the real state of the wall temperature of the water wall tube 11 can be truly reflected through the arrangement of the temperature measuring component, and the temperature measuring component is sleeved with the protective sleeve component, so that the temperature measuring component realizes the fixed connection of the outer part of the heating surface through the sleeve component, and further the long-time safe operation of the device is ensured; the device has simple structure, small maintenance amount and convenient maintenance; when the wall temperature of the water wall tube 11 changes greatly and exceeds the alarm value, the worker can accurately master the real state of the wall temperature of the water wall through the device, and the device can regulate and control in time, so that the long-period safe operation of the water wall tube 11 is ensured.
Alternatively, as shown in fig. 1 to 5, in some embodiments, the temperature measuring assembly includes a temperature measuring thermocouple 6, a thermocouple junction box 1 and a thermocouple output end 8, and the thermocouple junction box 1 and the protection sleeve assembly are detachably connected;
one end of the temperature thermocouple 6 is inserted in the thermocouple junction box 1, the other end of the temperature thermocouple 6 is inserted in the protective sleeve assembly, and the temperature thermocouple 6 is completely coated by the structure formed by combining the thermocouple junction box 1 and the temperature thermocouple 6;
and a thermocouple output end 8 is arranged on the side surface of the thermocouple junction box 1.
In the above alternative embodiment, it should be noted that, preferably, the thermocouple junction box 1 is in threaded connection with the protection sleeve assembly; the thermocouple output end 8 is connected with a measuring device.
Preferably, the end face of the temperature thermocouple 6, which is far away from the thermocouple junction box 1, is flush with the end face of the protective sleeve assembly, which is far away from the thermocouple junction box 1.
The beneficial effects of the above alternative embodiment are: the temperature change of the wall temperature of the water wall tube 11 can be monitored in real time through the arrangement of the temperature thermocouple 6, and when the wall temperature greatly changes and exceeds an alarm value, a worker can timely regulate and control the wall temperature.
Alternatively, as shown in fig. 1 to 5, in some embodiments, the protection sleeve assembly includes a thermowell 2, an end of the temperature thermocouple 6 facing away from the thermowell 1 is inserted into the thermowell 2, and the thermowell 1 is detachably connected to the thermowell 2.
In the above alternative embodiment, it should be noted that, preferably, the thermowell 2 is a high temperature resistant stainless steel pipe, and the thermocouple junction box 1 is in threaded connection with the thermowell 2.
The beneficial effects of the above alternative embodiment are: the temperature thermocouple 6 can be effectively protected by the arrangement of the thermocouple well 2, and the reliable operation of the temperature thermocouple 6 is further ensured.
Optionally, as shown in fig. 1 to 5, in some embodiments, the protection sleeve assembly further includes a compression nut 3, and the compression nut 3 is sleeved on the thermowell 2.
In the above alternative embodiment, it should be noted that, preferably, the compression nut 3 is a high temperature resistant stainless steel nut.
The beneficial effects of the above alternative embodiment are: the reliable fixing of this device on water wall pipe 11 can further be guaranteed through the setting of gland nut 3.
Alternatively, as shown in fig. 1 to 5, in some embodiments, the connection assembly includes a temperature tube socket 10, one end of the temperature tube socket 10 is connected to the protection sleeve assembly, and the other end of the temperature tube socket 10 is connected to the water wall tube 11.
In the above alternative embodiment, it should be noted that, preferably, the temperature tube holder 10 is welded or screwed to the water wall tube 11, and the compression nut 3 is welded or screwed to the temperature tube holder 10.
Preferably, the connecting sleeve 4 is sleeved on the thermowell 2.
The beneficial effects of the above alternative embodiment are: the temperature measuring tube seat 10 and the connecting sleeve 4 can ensure that the protective sleeve assembly is reliably inserted on the water wall tube 11, and then the temperature measuring assembly is inserted into the water wall tube 11 for temperature measurement monitoring.
Alternatively, as shown in fig. 1-5, in some embodiments, thermowell 2 has a circular cross-sectional shape.
The beneficial effects of the above alternative embodiment are: the circular cross-sectional shape of thermowell 2 takes advantage of the higher mechanical strength and more aesthetic appearance of the circular tube.
Alternatively, as shown in fig. 1-5, in some embodiments, thermowell 2 is made of a high temperature resistant stainless steel material.
The beneficial effects of the above alternative embodiment are: the thermocouple sleeve 2 is made of high-temperature-resistant stainless steel materials, so that the use reliability of the device is indirectly improved.
Alternatively, as shown in fig. 1 to 5, in some embodiments, the compression nut 3 is made of a high temperature resistant stainless steel material.
The beneficial effects of the above alternative embodiment are: the compression nut 3 is made of high-temperature-resistant stainless steel materials, so that the use reliability of the device is indirectly improved.
Alternatively, as shown in fig. 1-5, in some embodiments, the thermowell 2 has a length in the range of 300mm to 350 mm.
In the above alternative embodiment, it should be noted that the length of thermowell 2 is preferably 335 mm.
As shown in fig. 1 to 6, the monitoring method of the monitoring device for the water-cooled wall fire surface wall temperature measuring point according to the second aspect of the present invention uses all the technical features of the monitoring device for the water-cooled wall fire surface wall temperature measuring point according to the first aspect of the present invention, and further includes the following steps:
step S100, calculating the opening strength of the water wall tube 11, analyzing the internal pressure stress of the water wall tube 11 by adopting a structural analysis finite element program ANSYS through a calculation model and boundary conditions, wherein the maximum principal stress of the opening part of the temperature measuring tube theoretically meets the strength requirement;
s200, intercepting a section of water wall tube 11, transversely forming a measuring hole in the water wall tube 11, and carrying out photographic detection on the position of the measuring hole formed in the water wall tube 11 to ensure that the position of the hole is at the center of the water wall tube 11;
step S300, manufacturing a temperature measuring assembly, a protection sleeve assembly and a connecting assembly and connecting the temperature measuring assembly, the protection sleeve assembly and the connecting assembly;
and S400, welding and installing the temperature measuring tube seat 10 and the water wall 11, and performing nondestructive inspection on the water wall weld crater to be qualified.
In the above embodiment, it should be noted that, preferably, the hole measurement processing of the temperature measurement point of the water wall tube 11 requires that the inner wall of the hole measurement position is smooth and has no burrs, the hole measurement formed on the water wall tube 11 should be ensured at the central position, and the minimum residual wall thickness of the water wall tube 11 is ensured to be greater than or equal to 3 mm; the temperature measuring tube seat 10 is made of heat-resistant stainless steel, argon arc welding is adopted for welding with the water wall tube 11, the upper end and the lower end are welded in a spot mode without full welding, and the deformation of the tube seat is slightly influenced by heat generated during welding; the outer diameter of the temperature tube seat 10 is phi 12mm, the inner diameter is phi 8mm, and the height is 12 mm; the thermocouple sleeve 2 is made of heat-resistant stainless steel; the length of the thermowell 2 is 335mm, the outer diameter is 8mm, the inner diameter is 5mm, M8 external threads are formed at two ends, and the thread length is 15 mm; the compression nut 3 is made of heat-resistant stainless steel, the inner diameter is phi 8mm, the total height is 13mm, and the inner height is 12 mm; the compression nut 3 plays a role of fixing the thermocouple in the measuring hole; the temperature thermocouple 6 in the thermocouple well 2 is wound and filled by heat insulation material; the threaded connection of the temperature measuring tube seat 10, the thermocouple well 2 and the compression nut 3 is screwed, and the temperature measuring thermocouple 6 cannot rotate along with the threaded connection in the screwing process, so that the temperature measuring thermocouple is prevented from being damaged in a measuring hole; when two water wall pipes 11 are welded, the temperature thermocouple 6 and the thermocouple sleeve 2 are taken down firstly, and then the screw plug of M8 is used for plugging the measuring hole so as to prevent the measuring hole from bursting into welding slag when the water wall fins are welded; the water wall tube 11 adopts two-side welding, full welding is carried out on the fire surface, and a 25mm gap is left at a measuring point tube seat on the back fire surface for no welding; when the output of the temperature thermocouple 6 is connected with the compensation lead, the problem of the tension of the gravity of the compensation lead on the thermocouple is solved on site; finishing the manufacture of a single-sided groove after the pipe section is manufactured, wherein alpha is 30 +/-5 degrees, oil dirt and rust are removed by 10-15 mm inside and outside the pipe section, the metallic luster is exposed, and the two ends of a fin of the pipe are respectively removed by 50 mm; the pipe section can not be produced with the defects of cracks, bulges, corrosion, electric welding damage and the like, and all technical parameters meet the industrial regulations.
Specifically, the opening strength of the water wall tube 11 is calculated. A monitoring technology for a temperature measuring point of a boiler water wall fire wall adopts a structural analysis finite element program ANSYS to analyze the internal pressure stress of a water wall tube 11. Based on the theoretical calculation formula of the internal pressure and the annular stress in the thick-walled cylinder by the calculation model and the boundary conditions, when the internal pressure is 29.75MPa, the maximum annular stress is
According to the finite element calculation result of the water wall tube 11, the maximum circumferential stress of the inner wall when the hole is not opened is 56.772MPa, which is very close to the theoretical calculation stress of a thick-wall circular tube. The maximum circumferential stress of the inner wall when the transverse hole is opened is 63.841MPa, the increase is about 8MPa compared with the increase when the transverse hole is not opened, the increase proportion is about 14.4 percent, and the influence of opening is mainly the circumferential stress of the inner wall at the position of the transverse hole. The maximum main stress of the opening part of the temperature measuring pipe is 56.547MPa, which is lower than the circumferential stress of the inner wall, and theoretically meets the strength requirement.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Claims (10)
1. The monitoring device for the water-cooled wall fire-facing wall temperature measuring point is characterized by comprising a temperature measuring component, a protection sleeve component and a connecting component, wherein the temperature measuring component is inserted in the protection sleeve component, one end of the temperature measuring component is detachably connected with one end of the protection sleeve component, and the protection sleeve component is connected with a water-cooled wall pipe (11) through the connecting component.
2. The monitoring device for the wall temperature measuring point of the water-cooled wall to the fire surface according to claim 1, wherein the temperature measuring component comprises a temperature measuring thermocouple (6), a thermocouple junction box (1) and a thermocouple output end (8), and the thermocouple junction box (1) is detachably connected with the protection sleeve component;
one end of the temperature thermocouple (6) is inserted into the thermocouple junction box (1), the other end of the temperature thermocouple (6) is inserted into the protective sleeve assembly, and the temperature thermocouple (6) is completely coated by a structure formed by combining the thermocouple junction box (1) and the temperature thermocouple (6);
the side surface of the thermocouple junction box (1) is provided with the thermocouple output end (8).
3. The monitoring device for the wall temperature measuring point of the water cooled wall facing the fire surface is characterized in that the protective sleeve assembly comprises a thermowell (2), one end, away from the thermocouple junction box (1), of the temperature thermocouple (6) is inserted into the thermowell (2), and the thermocouple junction box (1) is detachably connected with the thermowell (2).
4. The monitoring device for the wall temperature measuring point of the water cooled wall facing to the fire surface as recited in claim 3, wherein the protective sleeve assembly further comprises a compression nut (3), and the compression nut (3) is sleeved on the thermocouple sleeve (2).
5. The monitoring device for the water wall fire facing surface temperature measuring point is characterized in that the connecting component comprises a temperature measuring pipe seat (10), one end of the temperature measuring pipe seat (10) is connected with the protective sleeve component, and the other end of the temperature measuring pipe seat (10) is connected with the water wall pipe (11).
6. A monitor for a wall temperature measuring point of a water-cooled wall to a fire surface as claimed in claim 3, wherein the cross-sectional shape of the thermowell (2) is a circular ring.
7. The monitoring device for the wall temperature measuring point of the water cooled wall to the fire surface according to claim 3, wherein the thermowell (2) is made of high temperature resistant stainless steel.
8. The monitoring device for the temperature measuring point of the fire wall of the water cooling wall is characterized in that the compression nut (3) is made of high-temperature-resistant stainless steel.
9. A device for monitoring a site where the temperature of a waterwall is measured towards a fire wall as defined in claim 3, wherein the length of said thermowell (2) is in the range of 300mm to 350 mm.
10. The monitoring method for the monitoring device of the water-cooled wall fire surface wall temperature measuring point according to the claim 1 is characterized in that the following steps are further included by using all technical characteristics of the monitoring device of the water-cooled wall fire surface wall temperature measuring point according to the claims 1 to 9:
step S100, calculating the opening strength of the water wall tube (11), analyzing the internal pressure stress of the water wall tube (11) by adopting a structural analysis finite element program ANSYS through a calculation model and boundary conditions, wherein the maximum main stress of the opening part of the temperature measuring tube theoretically meets the strength requirement;
s200, intercepting a section of water wall tube (11), transversely forming a hole in the water wall tube (11), and carrying out photographic detection on the opening position of the water wall tube (11) to ensure that the opening position is at the central position of the water wall tube (11);
step S300, manufacturing a temperature measuring assembly, a protection sleeve assembly and a connecting assembly and connecting the temperature measuring assembly, the protection sleeve assembly and the connecting assembly;
and S400, welding and installing the temperature measuring tube seat (10) and the water wall, and performing nondestructive inspection on the weld crater of the water wall to be qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110722276.0A CN113447154A (en) | 2021-06-28 | 2021-06-28 | Monitoring device and monitoring method for wall temperature measuring point of fire-facing surface of water-cooled wall |
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| CN202110722276.0A CN113447154A (en) | 2021-06-28 | 2021-06-28 | Monitoring device and monitoring method for wall temperature measuring point of fire-facing surface of water-cooled wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116731751A (en) * | 2023-06-30 | 2023-09-12 | 清华大学山西清洁能源研究院 | Online monitoring device and online monitoring method for coal gasifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116731751A (en) * | 2023-06-30 | 2023-09-12 | 清华大学山西清洁能源研究院 | Online monitoring device and online monitoring method for coal gasifier |
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