CN209866411U - Frock, frock system and flame tube - Google Patents
Frock, frock system and flame tube Download PDFInfo
- Publication number
- CN209866411U CN209866411U CN201920534719.1U CN201920534719U CN209866411U CN 209866411 U CN209866411 U CN 209866411U CN 201920534719 U CN201920534719 U CN 201920534719U CN 209866411 U CN209866411 U CN 209866411U
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- flame tube
- thermal barrier
- barrier coating
- annular body
- tooling
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Abstract
The utility model relates to a frock, frock system and flame tube, wherein the frock includes the thermal barrier coating spraying technology that is used for the flame tube, including cyclic annular body, be used for sheltering from the cooling hole of flame tube wall, the axial width of cyclic annular body is greater than the cooling hole aperture of flame tube, the outer wall of cyclic annular body is used for contacting with the flame tube inner wall; the annular body comprises a plurality of circumferential segments, and the adjacent circumferential segments are detachably connected. The tool and the tool system have the advantages of being easy to disassemble, convenient to carry out spraying operation, fully protecting cooling holes and the like, and the flame tube has the advantages of being good in structure cooling effect, long in service life and the like.
Description
Technical Field
The utility model relates to a frock, frock system and flame tube.
Background
At present, in the use process of a flame tube of a hot end component of an aeroengine or a gas turbine, because high-temperature gas is generated by combustion in the flame tube, Thermal shock and corrosion are generated on the flame tube, and the flame tube of the hot end component is easily damaged, a layer of high-temperature coating, namely Thermal Barrier Coating (TBC), is generally required to be formed on the inner wall of the flame tube of the hot end component so as to meet the requirement of heat insulation, thereby reducing the requirement of the working temperature of metal of the flame tube component.
Common thermal barrier coating Spraying processes include Plasma Spraying (PS), flame Spraying, arc Spraying, Suspension Plasma Spraying (APS), and the like, and the thermal barrier coating is sprayed on the inner wall of the flame tube of the hot-end component.
However, the flame tube wall is sprayed with a thermal barrier coating, a large number of cooling holes are often arranged, the cooling holes are the most important means for protecting the flame tube, especially the existing flame tube adopts a cooling form with a large number of multi-inclined holes, and when the flame tube is provided with the thermal barrier coating and the cooling holes, the processing is difficult. If the cooling hole is processed and then the coating is sprayed, the sprayed material is easy to enter the cooling hole, so that the cooling hole is reduced, and the cooling is not easy to meet the requirement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a frock can be in the cooling hole of the thermal barrier coating spraying process in-process protection flame tube that carries out the flame tube.
Another object of the utility model is to provide a tooling system.
Another object of the present invention is to provide a flame tube.
According to the utility model discloses a frock for the thermal barrier coating spraying technology of flame tube in one aspect, including the annular body, be used for sheltering from the cooling hole of flame tube wall, the axial width of annular body is greater than the cooling hole aperture of flame tube, the outer wall of annular body is used for contacting with the flame tube inner wall; the annular body comprises a plurality of circumferential segments, and the adjacent circumferential segments are detachably connected.
In one or more embodiments of the tooling, the two ends of the circumferential segments are provided with overlapping parts, the overlapping parts comprise threaded connection holes extending along the radial direction of the overlapping parts, and the circumferential segments can be in threaded connection through the alignment of the respective threaded connection holes of the adjacent overlapping parts.
In one or more embodiments of the tooling, the threaded connections are threaded connection holes that connect aligned adjacent overlapping portions with screws.
In one or more embodiments of the tool, a step is formed between the outer wall surface and the inner wall surface of the annular body, and the width of the step is equal to or larger than 0.2 mm.
In one or more embodiments of the tool, the height of the step is greater than the thickness of the thermal barrier coating by 0-0.1 mm.
According to the utility model discloses another aspect's a frock system, including above arbitrary one the frock, a plurality of frock are followed the axial arrangement of flame tube for cover each row cooling hole that distributes at flame tube wall axial.
In one or more embodiments of the tool system, the tools are further arranged between the axially adjacent tools for covering the cooling holes axially distributed in the flame tube wall.
According to the utility model discloses a flame tube of still another aspect, thermal barrier coating structure includes the polylith thermal barrier coating of axial distribution and is located a plurality of channels between the adjacent thermal barrier coating of axial, the axial position and the axial width of every channel of a plurality of channels are roughly equal to its corresponding above arbitrary one the annular body of frock system's frock axial position and axial width.
According to the utility model discloses a flame tube of another aspect, thermal barrier coating structure includes the polylith thermal barrier coating of axial distribution and is located a plurality of channels between the axially adjacent thermal barrier coating, a plurality of channels are by adopting above arbitrary one the frock system go on thermal barrier coating spraying technology form.
In one or more embodiments of the flame tube of any of the above, the cooling holes of the wall of the flame tube are oblique holes inclined to the axial direction of the flame tube.
The utility model discloses an advance the effect and include:
(1) through the shielding of the tool, when the thermal barrier coating is sprayed, the phenomenon that metal materials enter a cooling hole to generate shrinkage cavity is avoided;
(2) the sectional design facilitates the installation and the disassembly of the tool;
(3) by adopting the tool system to carry out the thermal barrier coating spraying process, the thermal barrier coating structure forms a more efficient channel structure of the air film hole outlet, and the cooling effect is further enhanced.
Drawings
The above and other features, nature and advantages of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings in which like reference characters refer to like features throughout, it being noted that the drawings are given by way of example only and are not to scale, and should not be taken as limiting the scope of the invention which is actually claimed, in which:
FIG. 1 is a schematic structural diagram of a combustor basket with a tooling according to an embodiment;
figure 2 is a schematic meridional section according to figure 1;
FIG. 3 is an enlarged view of a portion A-A according to FIG. 2;
FIG. 4 is a schematic structural diagram of a tool according to an embodiment;
FIG. 5 is a partial enlarged view of B-B according to FIG. 4;
FIG. 6 is a meridional cross-sectional view of a torch after an exemplary thermal barrier coating process with tooling;
FIG. 7 is a partial enlargement of C-C according to FIG. 6;
FIG. 8 is a schematic structural diagram of the flame tube after the tool is removed after the thermal barrier coating spraying process according to an embodiment.
Reference numerals:
1-flame tube
101-flame tube head mounting hole
102-Cooling hole
2-tooling
20-ring body
201. 201 ', 201' -circumferential segmentation
2011. 2012-lap joint
2013. 2014-threaded connecting hole
202-threaded hole
203-step
3. 3' and 3 "-thermal barrier coating
301-residual thermal barrier coating
4-laser device
401 laser pulse
5. 5' -channel
Detailed Description
The present invention will be further described with reference to the following embodiments and drawings, and more details will be set forth in the following description in order to provide a thorough understanding of the present invention, but it is obvious that the present invention can be implemented in various other ways different from those described herein, and those skilled in the art can make similar generalizations and deductions according to the actual application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of the embodiments.
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present invention. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.
Further, it is to be understood that the terms of orientation or positional relationship, such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally used in the sense of being based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the present invention, and in the case of not being described to the contrary, these terms of orientation do not indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention. Also, this application uses specific language to describe embodiments of the application. The terms "inside" and "outside" refer to the inside and the outside of the outline of each component itself, and the terms "first" and "second" are used to define the components, so as to distinguish the corresponding components only, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
As shown in fig. 1, a combustor basket 1 of a gas turbine, which is used for burning an oil-gas mixture therein, is provided with a combustor basket head mounting hole 101 and a plurality of cooling holes 102, and the cooling holes 102 distributed over the entire circumference of the combustor basket are arranged in the axial direction of the combustor basket 1. As shown in fig. 3, 7 and 8, the cooling holes 102 may be inclined holes, which are inclined from the axial direction of the combustor basket, so as to optimize the cooling effect of the airflow on the combustor basket 1.
As shown in FIG. 2, before the thermal barrier coating spraying process, a tooling system arranged along the axial direction of the flame tube 1 is correspondingly installed at each row of cooling holes 102 of the flame tube 1 so as to cover each row of cooling holes 102.
Referring to fig. 2 to 5, in an embodiment, the tooling system includes a plurality of tooling 2, and the tooling 2 includes an annular body 20 including a plurality of circumferential segments, for example, three circumferential segments 201, 201', 201 ″ shown in fig. 4, and adjacent circumferential segments are detachably connected to each other. As shown in fig. 3, the outer wall surface of the ring body 20 is adapted to contact the inner wall of the flame tube; the axial width is larger than the aperture of the cooling hole 102 of the flame tube 1, and is used for shielding the cooling hole 102 of the flame tube 1. The beneficial effects of the frock 2 adopting the sectional type lie in that, when spraying the thermal barrier coating, the sheltering from of frock makes, avoids in the thermal barrier coating spraying technology metal material to get into the shrinkage cavity phenomenon that cooling hole 102 produced cooling hole 102 and influence its cooling effect, and leads to the life-span of flame tube to receive the influence, and adopts the structure of sectional type, easily adapts to the profile of flame tube inner wall, makes things convenient for the operator to the installation and the dismantlement of frock 2 at the flame tube, has improved operator's work efficiency.
Referring to fig. 3 to 5, in an embodiment, a specific structure of the detachable connection between adjacent circumferential segments may be an overlapping structure, two ends of a circumferential segment, for example, an overlapping structure of the circumferential segment 201 and the circumferential segment 201 ″ shown in fig. 5, the circumferential segment 201 has an overlapping portion 2011, the circumferential segment 201 ″ has an overlapping portion 2012, each of the overlapping portions 2011, 2012 includes a threaded connection hole 2013, 2014 extending along a radial direction of the overlapping portion, and the threaded hole 202 is formed by aligning the respective threaded connection holes 2013, 2014 to perform a threaded connection, for example, inserting a screw to overlap the circumferential segment 201 and the circumferential segment 201 ″, but a bolt connection structure may also be adopted, which is simpler in operation of the screw connection and is more suitable for occasions where the requirement on the connection strength is not high. The bolt connection is reliable, but in the case where the number of rows of the cooling holes 102 is large and many tools 2 are required, the work load of the bolt connection structure is large.
With continued reference to fig. 3, in an embodiment, the specific structure of the annular body 20 may be a step 203 between the outer wall surface and the inner wall surface of the annular body 20, and the width of the step 203 is equal to or greater than 0.2 mm. The laser cutting tool has the advantages that the laser cutting tool is in a step structure with the width being equal to 0.2mm, materials remained on the annular body can be easily cleaned by laser after a thermal barrier coating spraying process, as shown in fig. 7, the steps 203 on two sides are bound to leave residual thermal barrier coatings 301 remained on the tool and connected with the thermal barrier coatings 3 on the surface of the flame tube 1, the steps 203 are vertically cut along the junction of the steps 203 and the thermal barrier coatings 3 through laser pulses 401 of the laser device 4, so that the tool 2 and the thermal barrier coatings 3 can be separated, the width of the steps needs to be larger than the diameter of pulse lasers 401 and is generally more than 0.2mm, and the laser cutting tool is used for smoothly separating the tool from the thermal barrier coatings. Further, the height of the step 203 can be 0-0.1 mm larger than the thickness of the thermal barrier coating 3, so as to prevent excessive thermal barrier coating materials from remaining on the step 203.
Referring to fig. 6 to 8, in an embodiment, the specific structure of the tooling system may also be that a tooling 2' is further provided between axially adjacent tooling 2 and 2 ″ for covering the cooling holes 102 axially distributed in the wall of the liner 1, that is, a tooling for covering the cooling holes 102 is further provided between adjacent tooling 2 and 2 ″ for covering the cooling holes, which has the advantage that a channel structure with good cooling effect may be formed.
As shown in fig. 8, after the thermal barrier coating spraying process is performed on the flame tube 1, a thermal barrier coating structure is formed, which includes a plurality of axially distributed thermal barrier coatings, such as the thermal barrier coatings 3, 3 ', 3 "shown in fig. 8, and after the tool is removed, such as the tool 2, 2', a channel is formed between axially adjacent thermal barrier coatings, such as the channel 5, 5 'shown in fig. 8, between the thermal barrier coatings 3, 3', and a channel 5 'is formed between the thermal barrier coatings 3', 3 ″, respectively, because the channel is formed by the sprayed material being blocked by the tool in the thermal barrier coating spraying process, the axial position and the axial width of the channel 5, 5 'are substantially equal to the axial position and the axial width of the corresponding tool 2, 2'. The channel structure is formed, so that the cooling effect of the airflow introduced by the cooling holes 102 is further optimized, the service life of the flame tube is prolonged, or the requirement on the heat resistance of the used material is lowered.
In conclusion, the advantages that the frock, the frock system and the flame tube that adopt above possess include following:
(1) through the shielding of the tool, when the thermal barrier coating is sprayed, the phenomenon that metal materials enter a cooling hole to generate shrinkage cavity is avoided;
(2) the sectional design facilitates the installation and the disassembly of the tool;
(3) by adopting the tool system to carry out the thermal barrier coating spraying process, the thermal barrier coating structure forms a more efficient channel structure of the air film hole outlet, and the cooling effect is further enhanced.
(4) The service life of the flame tube is prolonged, and the requirement on the heat resistance of the material used by the flame tube is reduced.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.
Claims (10)
1. The utility model provides a frock for the thermal barrier coating spraying process of flame tube, its characterized in that includes:
the annular body is used for shielding the cooling hole of the flame tube wall, the axial width of the annular body is larger than the diameter of the cooling hole of the flame tube, and the outer wall surface of the annular body is used for contacting with the inner wall of the flame tube; the annular body comprises a plurality of circumferential segments, and the adjacent circumferential segments are detachably connected.
2. The tooling of claim 1, wherein the circumferential segments have overlapping portions at both ends thereof, the overlapping portions include threaded attachment holes extending in a radial direction of the overlapping portions, and the circumferential segments are threadably attached to each other through respective threaded attachment holes of adjacent overlapping portions in alignment.
3. The tooling of claim 2, wherein the threaded connections are threaded connection holes connecting aligned adjacent said laps by screws.
4. The tool according to claim 1, wherein a step is formed between the outer wall surface and the inner wall surface of the annular body, and the width of the step is equal to or larger than 0.2 mm.
5. The tool according to claim 4, wherein the height of the step is greater than the thickness of the thermal barrier coating by 0-0.1 mm.
6. A tool system, characterized by comprising a plurality of tools according to any one of claims 1 to 5, wherein the tools are arranged along the axial direction of the flame tube and are used for covering each row of cooling holes distributed in the axial direction of the flame tube wall.
7. The tooling system of claim 6, wherein the tooling is further positioned between axially adjacent tooling for covering cooling holes axially distributed in the flame tube wall.
8. A flame tube comprising a thermal barrier coating structure, wherein the thermal barrier coating structure comprises a plurality of axially distributed thermal barrier coatings and a plurality of channels located between axially adjacent thermal barrier coatings, wherein the axial position and the axial width of each channel of the plurality of channels are approximately equal to the axial position and the axial width of the corresponding annular body of the tooling system of any one of claims 6 or 7.
9. A flame tube comprising a thermal barrier coating structure, wherein the thermal barrier coating structure comprises a plurality of axially distributed thermal barrier coatings and a plurality of channels located between axially adjacent thermal barrier coatings, the plurality of channels being formed by a thermal barrier coating spraying process using the tooling system of claim 6 or 7.
10. The liner of claim 8 or 9, wherein the cooling holes in the liner wall are angled holes that are angled with respect to the axial direction of the liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920534719.1U CN209866411U (en) | 2019-04-18 | 2019-04-18 | Frock, frock system and flame tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920534719.1U CN209866411U (en) | 2019-04-18 | 2019-04-18 | Frock, frock system and flame tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209866411U true CN209866411U (en) | 2019-12-31 |
Family
ID=68961029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920534719.1U Active CN209866411U (en) | 2019-04-18 | 2019-04-18 | Frock, frock system and flame tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209866411U (en) |
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2019
- 2019-04-18 CN CN201920534719.1U patent/CN209866411U/en active Active
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