CN219140829U - Gas nozzle seat - Google Patents
Gas nozzle seat Download PDFInfo
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- CN219140829U CN219140829U CN202222288216.5U CN202222288216U CN219140829U CN 219140829 U CN219140829 U CN 219140829U CN 202222288216 U CN202222288216 U CN 202222288216U CN 219140829 U CN219140829 U CN 219140829U
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- cavity
- bottom plate
- circular
- duty
- gas nozzle
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Abstract
The utility model discloses a gas nozzle seat, which consists of an integrally formed cavity seat and an integrally formed cover body, wherein a circular flange body formed on the outer side of the upper end of the cover body is used for installing a gas nozzle and a machine seat, an axial main path gas inlet through hole and an axial on-duty path gas inlet through hole formed on a circular cover bottom plate of the cover body are used for conveying gas, and the cover body and the cavity seat are coaxially and hermetically assembled together to form a main path fuel cavity and an on-duty path fuel cavity. The gas nozzle seat has the advantages of fewer required parts and fewer welding parts, reduces welding deformation, improves the precision of the nozzle seat, is convenient to assemble, reduces the processing cost, and can ensure the stability and reliability of the operation of the gas engine.
Description
Technical Field
The utility model relates to the technical field of gas turbines, in particular to a gas nozzle seat.
Background
In the starting process of the gas turbine, the gas fuel is adopted for ignition and starting, the gas nozzle is used as an important component of the combustion chamber, and the performance of the gas nozzle directly influences the performance in the aspects of ignition, combustion efficiency, combustion stability, temperature distribution, exhaust pollution and the like. Therefore, the gas nozzle is an important part of the gas turbine, and the reasonable distribution and orderly work of main fuel and on-duty road fuel are important in the combustion of the combustion chamber in the operation process of the gas turbine, and are the key of the safe and stable operation of the gas turbine. On the one hand, the more homogeneous the mixture is, the more advantageous the flame propagation is, on the other hand, if the mixture is not homogeneous, not only the global knocking tendency is affected, but also local knocking can be caused by local mixing irregularities.
In the prior art, a duty nozzle is usually arranged at the center of the cyclone, and is used for stabilizing flame. The flame is used as a stable ignition source, and can be used for igniting the main flame under a low-load working condition, so that the main flame is not extinguished, the stable working range of a combustion chamber is enlarged, the combustion efficiency is improved, and the air supply mechanism of the existing natural gas nozzle is shown in the attached figure 1, and comprises a nozzle 12 from which the ignition natural gas flows out, a nozzle 13 from which the main natural gas flows out, an ignition natural gas inlet 14, a main natural gas inlet 15 and a cornering swirler 16, wherein the gas nozzle on duty is in an annular open type and is directly mixed with air, so that more uniform mixed gas is difficult to obtain, and because the ignition natural gas inlet 14 and the main natural gas inlet 15 are respectively formed, more parts are required, more welding parts are easy to generate welding deformation, the accuracy of the air supply mechanism is low, and the assembly is inconvenient.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a gas nozzle seat, which has the advantages of fewer required parts, fewer welding parts, reduced welding deformation, improved precision of the nozzle seat, convenience in assembly and reduced processing cost.
In order to solve the technical problems, the gas nozzle seat provided by the utility model comprises a cover body 2 and a cavity seat 3;
the cavity seat 3 comprises a circular cavity bottom plate 31, a cavity outer annular wall 32 and a cavity inner annular wall 33, wherein the circular cavity bottom plate 31 is integrally formed and coaxial, the cavity outer annular wall 32 is formed on the periphery of the upper side surface of the circular cavity bottom plate 31, and the cavity inner annular wall 33 is formed in the middle of the upper side surface of the circular cavity bottom plate 31;
the cover body 2 comprises a coaxial circular cover bottom plate 21, a circular pipe cover wall 22 and a circular ring-shaped flange body 23 which are integrally formed;
the lower end of the circular tube cover wall 22 is combined with the periphery of the upper side surface of the circular cover bottom plate 21;
the inner side of the annular flange body 23 is combined with the outer wall at the upper end of the circular tube cover wall 22;
the cover body 2 and the cavity seat 3 are coaxially assembled together, the circular cover bottom plate 21 is in sealing fit with the cavity outer annular wall 32 and the cavity inner annular wall 33, so that the circular cover bottom plate 21, the cavity outer annular wall 32, the cavity inner annular wall 33 and the circular cavity bottom plate 31 enclose a main fuel cavity 320, and the circular cover bottom plate 21, the cavity inner annular wall 33 and the circular cavity bottom plate 31 enclose an on-duty fuel cavity 310;
the circular cover bottom plate 21 is provided with an axial main-way air inlet through hole communicated with the main-way fuel cavity 320 and an axial duty-way air inlet through hole communicated with the duty-way fuel cavity 310;
the circular cavity bottom plate 31 is formed with an axial main-way air outlet through hole communicated to the main-way fuel cavity 320 and an axial on-duty-way air outlet through hole communicated to the on-duty-way fuel cavity 310.
Preferably, the gas nozzle holder further comprises an on-duty fuel inlet 46;
the on-duty fuel inlet pipe 46 and the circular cover bottom plate 21 are in clearance fit with each other by 0.03-0.06 mm;
the on-duty fuel inlet pipe 46 is vertically brazed to the circular cover bottom plate 21 and communicates with the axial on-duty air inlet through hole.
Preferably, the gas nozzle holder further comprises a main fuel inlet pipe 45;
the main fuel inlet pipe 45 is in clearance fit with the circular cover bottom plate 21 by 0.03-0.06 mm;
the main fuel inlet pipe 45 is fixed to the circular cover bottom plate 21 by vertical brazing and communicates with the axial main air inlet through hole.
Preferably, the gas nozzle holder further comprises a main fuel nozzle 43;
the main fuel spray pipe 43 is vertically brazed and fixed to the circular cavity bottom plate 31 and communicated with the axial main air outlet through hole, and the lower end of the main fuel spray pipe is positioned in the air cavity of the cyclone and is used for spraying main fuel gas and premixing air in the air cavity of the cyclone.
Preferably, the gas nozzle holder further includes an on-duty fuel nozzle 44;
the on-duty road fuel spray pipe 44 is vertically brazed and fixed to the circular cavity bottom plate 31 and communicated with the axial on-duty road air outlet through hole, and the lower end of the on-duty road fuel spray pipe is positioned in the cyclone air cavity and used for spraying on-duty road fuel gas and premixing air in the cyclone air cavity.
Preferably, the circular cavity bottom plate 31 is uniformly formed with a plurality of axial main air outlet through holes along the circumferential direction around the axis.
Preferably, the circular cavity bottom plate 31 is uniformly formed with a plurality of axial on-duty air outlet through holes along the circumferential direction around the axis.
Preferably, a cylindrical boss 211 is formed at the center of the lower side of the circular cover bottom plate 21;
the cover body 2 and the cavity seat 3 are coaxially assembled together, and the cylindrical boss 211 is in interference sealing fit with the inner wall of the cavity inner annular wall 33.
Preferably, a circular concave step 212 is formed at the center of the periphery of the lower end of the circular cover bottom plate 21;
the cover body 2 and the cavity seat 3 are coaxially assembled together, and the inner wall of the cavity outer annular wall 32 is in interference sealing fit with the wall surface of the upper concave step 212.
The utility model relates to a gas nozzle seat, which consists of an integrally formed cavity seat 3 and an integrally formed cover body 2, wherein a circular flange body 23 formed on the outer side of the upper end of the cover body 2 is used for installing a gas nozzle and a machine seat, an axial main path gas inlet through hole and an axial on-duty path gas inlet through hole formed on a circular cover bottom plate 21 of the cover body 2 are used for gas transportation, and the cover body 2 and the cavity seat 3 are coaxially and hermetically assembled together to form a main path fuel cavity 320 and an on-duty path fuel cavity 310. The gas nozzle seat has the advantages of fewer required parts and fewer welding parts, reduces welding deformation, improves the precision of the nozzle seat, is convenient to assemble, reduces the processing cost, and can ensure the stability and reliability of the operation of the gas engine.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the following brief description of the drawings is given for the purpose of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without the need for inventive work for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a gas supply mechanism of a prior art natural gas nozzle;
FIG. 2 is a schematic cross-sectional view of an embodiment of a gas nozzle holder of the present utility model.
Reference numerals illustrate:
2, a cover body; a 21 circular cover bottom plate; 22 round tube cap wall; 23 circular ring flange body; 211 cylindrical bosses; 212 a circular concave step; 3, a cavity seat; 31 a circular cavity bottom plate; 32 cavity outer annular walls; 33 an inner annular wall of the cavity; 320 main fuel cavity; 310 on duty road fuel cavity; 46, on duty road fuel inlet pipe; 45 main fuel inlet pipes; 43 main fuel nozzles; 44 duty road fuel nozzles.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 2, the gas nozzle holder includes a cover 2 and a cavity holder 3;
the cavity seat 3 comprises a circular cavity bottom plate 31, a cavity outer annular wall 32 and a cavity inner annular wall 33, wherein the circular cavity bottom plate 31 is integrally formed and coaxial, the cavity outer annular wall 32 is formed on the periphery of the upper side surface of the circular cavity bottom plate 31, and the cavity inner annular wall 33 is formed in the middle of the upper side surface of the circular cavity bottom plate 31;
the cover body 2 comprises a coaxial circular cover bottom plate 21, a circular pipe cover wall 22 and a circular ring-shaped flange body 23 which are integrally formed;
the lower end of the circular tube cover wall 22 is combined with the periphery of the upper side surface of the circular cover bottom plate 21;
the inner side of the annular flange body 23 is combined with the outer wall at the upper end of the circular tube cover wall 22;
the cover body 2 and the cavity seat 3 are coaxially assembled together, the circular cover bottom plate 21 is in sealing fit with the cavity outer annular wall 32 and the cavity inner annular wall 33, so that the circular cover bottom plate 21, the cavity outer annular wall 32, the cavity inner annular wall 33 and the circular cavity bottom plate 31 enclose a main fuel cavity 320, and the circular cover bottom plate 21, the cavity inner annular wall 33 and the circular cavity bottom plate 31 enclose an on-duty fuel cavity 310;
the circular cover bottom plate 21 is provided with an axial main-way air inlet through hole communicated with the main-way fuel cavity 320 and an axial duty-way air inlet through hole communicated with the duty-way fuel cavity 310;
the circular cavity bottom plate 31 is formed with an axial main-way air outlet through hole communicated to the main-way fuel cavity 320 and an axial on-duty-way air outlet through hole communicated to the on-duty-way fuel cavity 310.
The gas nozzle seat of the first embodiment is composed of an integrally formed cavity seat 3 and an integrally formed cover body 2, a circular ring-shaped flange body 23 formed on the outer side of the upper end of the cover body 2 is used for installing a gas nozzle and a machine seat, an axial main path gas inlet through hole and an axial on-duty path gas inlet through hole formed on a circular cover bottom plate 21 of the cover body 2 are used for gas transportation, and the cover body 2 and the cavity seat 3 are assembled together in a coaxial sealing fit manner to form a main path fuel cavity 320 and an on-duty path fuel cavity 310. The gas nozzle seat has the advantages of fewer required parts and fewer welding parts, reduces welding deformation, improves the precision of the nozzle seat, is convenient to assemble, reduces the processing cost, and can ensure the stability and reliability of the operation of the gas engine.
Example two
Based on the first embodiment, the gas nozzle holder further comprises an on-duty fuel inlet 46;
the on-duty fuel inlet pipe 46 and the circular cover bottom plate 21 are in clearance fit with each other by 0.03-0.06 mm;
the on-duty fuel inlet pipe 46 is vertically brazed to the circular cover bottom plate 21 and communicates with the axial on-duty air inlet through hole.
The on-duty road fuel inlet pipe 46 and the circular cover bottom plate 21 adopt a clearance fit and brazing mode of 0.03-0.06 mm, so that the assembly precision of the on-duty road fuel inlet pipe 46 can be ensured, the operation is simple, and the implementation is easy.
Example III
Based on the first embodiment, the gas nozzle seat further comprises a main fuel inlet pipe 45;
the main fuel inlet pipe 45 is in clearance fit with the circular cover bottom plate 21 by 0.03-0.06 mm;
the main fuel inlet pipe 45 is fixed to the circular cover bottom plate 21 by vertical brazing and communicates with the axial main air inlet through hole.
The main fuel inlet pipe 45 and the circular cover bottom plate 21 are in clearance fit and brazing modes of 0.03-0.06 mm, so that the assembly precision of the main fuel inlet pipe 45 can be ensured, the operation is simple, and the realization is easy.
Example IV
According to the first embodiment, the gas nozzle holder further comprises a main fuel nozzle 43;
the main fuel spray pipe 43 is vertically brazed and fixed to the circular cavity bottom plate 31 and communicated with the axial main air outlet through hole, and the lower end of the main fuel spray pipe is positioned in the air cavity of the cyclone and is used for spraying main fuel gas and premixing air in the air cavity of the cyclone.
Preferably, the gas nozzle holder further includes an on-duty fuel nozzle 44;
the on-duty road fuel spray pipe 44 is vertically brazed and fixed to the circular cavity bottom plate 31 and communicated with the axial on-duty road air outlet through hole, and the lower end of the on-duty road fuel spray pipe is positioned in the cyclone air cavity and used for spraying on-duty road fuel gas and premixing air in the cyclone air cavity.
The perpendicularity of the main fuel spray pipe 43 and the on-duty fuel spray pipe 44 can be guaranteed by brazing, and when the whole engine is assembled, the main fuel spray pipe 43 and the on-duty fuel spray pipe 44 are more uniformly premixed with air, so that the stability of air and combustion is more facilitated.
Example five
Based on the gas nozzle holder of the first embodiment, the circular cavity bottom plate 31 is uniformly formed with a plurality of axial main air outlet through holes along the circumferential direction around the axis.
Preferably, the circular cavity bottom plate 31 is uniformly formed with a plurality of axial on-duty air outlet through holes along the circumferential direction around the axis.
Example six
According to the gas nozzle holder of the first embodiment, a cylindrical boss 211 is formed at the center of the lower side surface of the circular cover bottom plate 21;
the cover body 2 and the cavity seat 3 are coaxially assembled together, and the cylindrical boss 211 is in interference sealing fit with the inner wall of the cavity inner annular wall 33.
Preferably, a circular concave step 212 is formed at the center of the periphery of the lower end of the circular cover bottom plate 21;
the cover body 2 and the cavity seat 3 are coaxially assembled together, and the inner wall of the cavity outer annular wall 32 is in interference sealing fit with the wall surface of the upper concave step 212.
In the sixth embodiment, the gas nozzle holder is matched and positioned with the inner annular wall 33 of the cavity through the cylindrical boss 211, so that the centering of the cover body 2 and the cavity holder 3 is ensured, and the centering of the air hole is ensured.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.
Claims (9)
1. The gas nozzle seat is characterized by comprising a cover body (2) and a cavity seat (3);
the cavity seat (3) comprises a circular cavity bottom plate (31) of a coaxial line, a cavity outer annular wall (32) formed on the periphery of the upper side surface of the circular cavity bottom plate (31) and a cavity inner annular wall (33) formed in the middle of the upper side surface of the circular cavity bottom plate (31);
the cover body (2) comprises a coaxial circular cover bottom plate (21), a circular pipe cover wall (22) and a circular ring-shaped flange body (23) which are integrally formed;
the lower end of the circular tube cover wall (22) is combined with the periphery of the upper side surface of the circular cover bottom plate (21);
the inner side of the annular flange body (23) is combined with the outer wall of the upper end of the circular tube cover wall (22);
the cover body (2) and the cavity seat (3) are coaxially assembled together, and the circular cover bottom plate (21) is in sealing fit with the outer cavity annular wall (32) and the inner cavity annular wall (33), so that the circular cover bottom plate (21), the outer cavity annular wall (32), the inner cavity annular wall (33) and the circular cavity bottom plate (31) enclose to form a main fuel cavity (320), and the circular cover bottom plate (21), the inner cavity annular wall (33) and the circular cavity bottom plate (31) enclose to form an on-duty fuel cavity (310);
the circular cover bottom plate (21) is provided with an axial main-way air inlet through hole communicated with the main-way fuel cavity (320) and an axial duty-way air inlet through hole communicated with the duty-way fuel cavity (310);
the circular cavity bottom plate (31) is provided with an axial main-way air outlet through hole communicated to the main-way fuel cavity (320) and an axial duty-way air outlet through hole communicated to the duty-way fuel cavity (310).
2. The gas nozzle holder of claim 1, wherein,
the gas nozzle seat also comprises an on-duty fuel inlet pipe (46);
the fuel inlet pipe (46) of the on-duty road is in clearance fit with the circular cover bottom plate (21) by 0.03-0.06 mm;
the on-duty road fuel inlet pipe (46) is vertically brazed and fixed to the circular cover bottom plate (21) and communicated with the axial on-duty road air inlet through hole.
3. The gas nozzle holder of claim 1, wherein,
the gas nozzle seat also comprises a main fuel inlet pipe (45);
the main fuel inlet pipe (45) is in clearance fit with the circular cover bottom plate (21) by 0.03-0.06 mm;
the main fuel inlet pipe (45) is fixed to the circular cover bottom plate (21) by vertical brazing and is communicated with the axial main air inlet through hole.
4. The gas nozzle holder of claim 1, wherein,
the gas nozzle holder further comprises a main fuel nozzle (43);
the main fuel spray pipe (43) is vertically brazed and fixed to the circular cavity bottom plate (31) and communicated with the axial main air outlet through hole, and the lower end of the main fuel spray pipe is positioned in the cyclone air cavity and used for spraying main fuel gas and premixing air in the cyclone air cavity.
5. The gas nozzle holder of claim 1, wherein,
the gas nozzle holder further comprises an on-duty fuel nozzle (44);
the on-duty road fuel spray pipe (44) is vertically brazed and fixed to the circular cavity bottom plate (31) and communicated with the axial on-duty road air outlet through hole, and the lower end of the on-duty road fuel spray pipe is positioned in the cyclone air cavity and used for spraying on-duty road fuel gas to be premixed with air in the cyclone air cavity.
6. The gas nozzle holder of claim 1, wherein,
the circular cavity bottom plate (31) is uniformly formed with a plurality of axial main path air outlet through holes along the circumferential direction around the axis.
7. The gas nozzle holder of claim 1, wherein,
the circular cavity bottom plate (31) is uniformly formed with a plurality of axial on-duty path air outlet through holes along the circumferential direction around the axis.
8. The gas nozzle holder of claim 1, wherein,
a cylindrical boss (211) is formed in the center of the lower side surface of the circular cover bottom plate (21);
the cover body (2) and the cavity seat (3) are coaxially assembled together, and the cylindrical boss (211) is in interference sealing fit with the inner wall of the inner annular wall (33) of the cavity.
9. The gas nozzle holder of claim 1, wherein,
the center of the periphery of the lower end of the round cover bottom plate (21) is provided with a round annular upper concave step (212);
the cover body (2) and the cavity seat (3) are coaxially assembled together, and the inner wall of the outer annular wall (32) of the cavity is in interference sealing fit with the wall surface of the upper concave step (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222288216.5U CN219140829U (en) | 2022-08-30 | 2022-08-30 | Gas nozzle seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222288216.5U CN219140829U (en) | 2022-08-30 | 2022-08-30 | Gas nozzle seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219140829U true CN219140829U (en) | 2023-06-06 |
Family
ID=86560371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222288216.5U Active CN219140829U (en) | 2022-08-30 | 2022-08-30 | Gas nozzle seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219140829U (en) |
-
2022
- 2022-08-30 CN CN202222288216.5U patent/CN219140829U/en active Active
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