CN-121993314-A - Flow field flow stabilizer in high-temperature high-pressure gas spray pipe

Abstract

The invention discloses a flow field stabilizer in a high-temperature high-pressure gas spray pipe, relates to the technical field of gas spray pipes, and aims to solve the problems that in the prior art, the flow of gas at a convergent section of the spray pipe is unstable, and residues in the gas are easy to block a pipeline. The invention discloses an internal flow field flow stabilizing device of a high-temperature high-pressure gas spray pipe, which comprises a shell, an external flow stabilizing sleeve, an internal flow stabilizing sleeve and a gas inlet, wherein the shell is connected with the gas inlet and a spray pipe, and the external flow stabilizing sleeve and the internal flow stabilizing sleeve are both connected with the shell. The outer steady flow sleeve and the inner steady flow sleeve are arranged in the shell, and the fuel gas inlet is communicated with the spray pipe through the outer steady flow sleeve and the inner steady flow sleeve. The inner steady flow sleeve is arranged in the outer steady flow sleeve. The invention improves the steady state of the internal flow field of the fuel gas entering the spray pipe, prevents residues from blocking the internal pipeline of the spray pipe, and improves the safety and stability of the structure.

Inventors

• WANG CHENYU
• Ji Mang
• MENG QINGYU
• CUI GUANGZHI
• MA JUN
• YIN CHUANHAO

Assignees

• 北京机械设备研究所

Dates

Publication Date

20260508

Application Date

20241107

Claims (10)

1. 1. The utility model provides a flow field current stabilizer in high temperature high pressure gas jet pipe, its characterized in that includes casing (1), outer stationary flow sleeve (2), interior stationary flow sleeve (3) and gas entry (4), casing (1) with gas entry (4) and spray tube (5) are connected, outer stationary flow sleeve (2) with interior stationary flow sleeve (3) all with casing (1) are connected.
2. 2. The flow field stabilizer in a high-temperature high-pressure gas injection pipe according to claim 1, characterized in that the outer flow stabilizing sleeve (2) and the inner flow stabilizing sleeve (3) are arranged in the shell (1), and the gas inlet (4) is communicated with the injection pipe (5) through the outer flow stabilizing sleeve (2) and the inner flow stabilizing sleeve (3).
3. 3. The flow stabilizing device for the flow field in the high-temperature high-pressure gas injection pipe according to claim 2, wherein a first cavity (11) is arranged between the shell (1) and the outer flow stabilizing sleeve (2).
4. 4. A flow stabilizer for an internal flow field of a high temperature and high pressure gas injection pipe according to claim 3, characterized in that a second cavity (21) is arranged between the outer flow stabilizing sleeve (2) and the inner flow stabilizing sleeve (3).
5. 5. The flow field stabilizer in the high-temperature high-pressure gas injection pipe according to claim 4, characterized in that a third cavity (31) is arranged in the inner flow stabilizing sleeve (3), and the third cavity (31) is communicated with the injection pipe (5).
6. 6. The flow field stabilizer in a high-temperature high-pressure gas injection pipe according to claim 5, wherein a first capsule hole (22) is arranged on the outer flow stabilizing sleeve (2), and the first cavity (11) is communicated with the second cavity (21) through the first capsule hole (22).
7. 7. The flow field stabilizer in the high-temperature high-pressure gas injection pipe according to claim 6, characterized in that a second capsule hole (32) is arranged on the inner flow stabilizing sleeve (3), and the second cavity (21) is communicated with the third cavity (31) through the second capsule hole (32).
8. 8. The flow field stabilizer in a high-temperature high-pressure gas injection pipe according to claim 7, wherein the first capsule holes (22) are arranged at an included angle of 40-50 degrees with the outer flow stabilizing sleeve (2), and the second capsule holes (32) are arranged at an included angle of 40-50 degrees with the inner flow stabilizing sleeve (3).
9. 9. The flow field stabilizer in the high-temperature high-pressure gas injection pipe according to claim 7, wherein the first capsule holes (22) are uniformly distributed on the outer flow stabilizing sleeve (2), and the second capsule holes (32) are uniformly distributed on the inner flow stabilizing sleeve (3).
10. 10. The flow field stabilizer in a high temperature and high pressure gas injection pipe according to any one of claims 1-9, characterized in that the outer flow stabilizing sleeve (2) and the inner flow stabilizing sleeve (3) are in interference fit with the housing (1) and the injection pipe (5).

Description

Flow field flow stabilizer in high-temperature high-pressure gas spray pipe Technical Field The invention relates to the technical field of fuel gas spray pipes, in particular to a flow field stabilizer in a high-temperature high-pressure fuel gas spray pipe. Background The high-temperature high-pressure gas jet pipe is widely applied to various aircraft systems, and mainly comprises a Laval jet pipe. The Laval nozzle is a pipeline which is contracted and then expanded, and the working principle of the Laval nozzle is to accelerate subsonic airflow to supersonic airflow by utilizing the flow characteristic of gas in the pipeline. In the prior art, the direction of the gas entering the nozzle flow channel is different from the direction of the nozzle outlet, so that the instability of the gas flow in the converging section of the nozzle is greatly increased, and meanwhile, the residue which is not fully combusted in the gas is easy to block the pipeline. Disclosure of Invention In view of the above analysis, the invention aims to provide a flow stabilizing device for a flow field in a high-temperature high-pressure fuel gas spray pipe, which is used for solving the problems that fuel gas flows unstably at a convergent section of a spray pipe in the prior art, and residues in the fuel gas are easy to block a pipeline. The aim of the invention is mainly realized by the following technical scheme: The utility model provides a flow field current stabilizer in high temperature high pressure gas injection pipe, includes casing, outer stationary flow sleeve, interior stationary flow sleeve and gas entry, the casing with gas entry and spray tube are connected, outer stationary flow sleeve with interior stationary flow sleeve all with the casing is connected. Further, the outer steady flow sleeve and the inner steady flow sleeve are arranged in the shell, and the fuel gas inlet is communicated with the spray pipe through the outer steady flow sleeve and the inner steady flow sleeve. Further, a first cavity is arranged between the shell and the outer steady flow sleeve. Further, a second cavity is arranged between the outer steady flow sleeve and the inner steady flow sleeve. Further, a third cavity is arranged in the inner steady flow sleeve, and the third cavity is communicated with the spray pipe. Further, a first capsule hole is formed in the outer steady flow sleeve, and the first cavity is communicated with the second cavity through the first capsule hole. Further, a second capsule hole is formed in the inner steady flow sleeve, and the second cavity is communicated with the third cavity through the second capsule hole. Further, the first capsule hole and the outer steady flow sleeve are arranged at an included angle of 40-50 degrees, and the second capsule hole and the inner steady flow sleeve are arranged at an included angle of 40-50 degrees. Further, the first capsule holes are uniformly distributed on the outer steady flow sleeve, and the second capsule holes are uniformly distributed on the inner steady flow sleeve. Further, the outer and inner flow stabilizing sleeves are in interference fit with the housing and the nozzle. Further, the first capsule aperture has an area greater than an area of the second capsule aperture, which is greater than a throat area of the spout. Further, the gas burner further comprises a filter assembly, and the filter assembly is connected with the shell and the gas pipe. Further, the filter assembly comprises an air inlet pipe, an air outlet pipe, a driving part and a filter part, wherein the driving part is connected with the shell, and the air inlet pipe and the air outlet pipe are used for connecting the fuel gas pipe with the driving part. Further, the drive portion includes drive shell, pneumatic wheel, runner, swinging member and straight-bar, the drive shell with the casing with the filter part is connected, the intake pipe with the outlet duct will the gas pipe with the drive shell intercommunication, set up pneumatic wheel, runner, swinging member and straight-bar in the drive shell. Further, the pneumatic wheel is connected with the driving housing through the bearing frame, the runner with the pneumatic wheel is connected, the runner can be followed the pneumatic wheel rotates, the swinging member with the driving housing passes through the bearing bar and is connected, the swinging member can rotate around the bearing bar, the one end of swinging member with the runner is connected, the other end with the straight-bar cooperation is used for the drive the straight-bar is reciprocal rectilinear motion, the straight-bar pass through the latch and the driving housing is connected, the straight-bar can carry out rectilinear movement in the latch, the straight-bar extends to in the filter part. Further, the swinging piece comprises a first connecting section and a second connecting section, the first connecting section is connected with the second connecting section, t