CN111211468B - High-recovery-pressure injection spray pipe - Google Patents
High-recovery-pressure injection spray pipe Download PDFInfo
- Publication number
- CN111211468B CN111211468B CN201811396228.1A CN201811396228A CN111211468B CN 111211468 B CN111211468 B CN 111211468B CN 201811396228 A CN201811396228 A CN 201811396228A CN 111211468 B CN111211468 B CN 111211468B
- Authority
- CN
- China
- Prior art keywords
- pressure
- nozzle
- spray pipe
- subsonic
- mach
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/03—Constructional details of gas laser discharge tubes
- H01S3/036—Means for obtaining or maintaining the desired gas pressure within the tube, e.g. by gettering, replenishing; Means for circulating the gas, e.g. for equalising the pressure within the tube
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention relates to a high recovery pressure jet spray for an oxygen-iodine chemical laserA tube. The device is connected between the oxygen generator and the optical cavity and is used for generating air flow with high total pressure and low static pressure. The high recovery pressure ejector nozzle is divided into two parts: high Mach number ejector nozzle and main air flow subsonic nozzle, main air flow O2(1Delta) is accelerated by the subsonic nozzle to have a Mach number of about 1, I2/N2The Mach number of the mixed gas can reach 5 after passing through the high-Mach-number spray pipe, and the total pressure of the mixed gas and the high-Mach-number spray pipe can reach nearly 300 torr. This high recovery pressure draws and penetrates spray tube can produce the air current that about 300torr is total pressed, and the high total pressure low static pressure air current of optical cavity export is through diffuser pressure boost speed reduction, and the static pressure can reach about 100torr, can reduce the volume of pressure recovery system greatly like this, provides powerful the support for the high-efficient compactification of oxygen iodine chemical laser.
Description
Technical Field
The invention relates to an oxygen-iodine chemical laser, in particular to a spray pipe device for generating high total pressure and low static pressure airflow by a chemical laser. The invention is arranged between an oxygen generator and an optical cavity of an oxygen-iodine chemical laser, high-Mach number jet air flow and near-sonic main air flow are respectively generated through a high-Mach number jet air flow nozzle and a main air flow subsonic nozzle, and the high-Mach number jet air flow and the near-sonic main air flow are mixed and reacted through a baffle. The jet pipe can generate air flow with high total pressure and low static pressure, and provides powerful conditions for miniaturization of the oxygen-iodine chemical laser pressure recovery system. The invention can be used for solving the problem of high recovery pressure in the injection type pressure recovery system of the oxygen-iodine chemical laser.
Background
The total pressure of airflow in the optical cavity of the traditional oxygen-iodine chemical laser is about 30torr, the Mach number is about 2, the air pressure of the external environment is 760torr, and the airflow cannot be directly discharged into the atmosphere from the optical cavity, so that the chemical laser needs a pressure recovery system, and the traditional pressure recovery system comprises a vacuum large tank, an injection system and an adsorption system. These pressure recovery systems, although of different forms, have in common the fact that they are bulky, the bulk of which is the biggest obstacle limiting the oxygen-iodine chemical laser towards efficient motorization.
The fundamental reason limiting the development of pressure recovery systems is the low total pressure of the optical cavity outlet flow, which is therefore bulky. The high-recovery-pressure ejector nozzle can generate airflow with high total pressure and low static pressure, and the static pressure of the airflow can be increased to 100torr only by a simple diffuser after the airflow flows out of the optical cavity. The design of the high recovery pressure injection spray pipe is divided into two parts:
the first part is a high Mach number nozzle through which the iodine and nitrogen carrier gas pass, the Mach number of the gas flow can reach a high supersonic velocity, and the high total pressure of the mixed gas flow comes from the partial gas flow.
The second part is a subsonic nozzle, and the main air flow O2(1Delta) has a velocity close to sonic velocity and the gas flow is mixed with the gas flow with high Mach number.
For the air flow at the outlet of the optical cavity of the traditional oxygen-iodine chemical laser, the total pressure is less than 30torr, the total pressure loss of the air flow in a pipeline is caused, the static pressure lifting is limited, and the volume of a pressure recovery system can be greatly reduced only if the air flow with high total pressure and low static pressure is generated at the outlet of the spray pipe. The supersonic characteristic line method is used for designing the high-Mach-number spray pipe, the 5-power curve is used for designing the subsonic spray pipe, the high-Mach-number spray pipe and the subsonic spray pipe are organically combined, the baffle is added, the mixing efficiency is improved, and the high-recovery-pressure injection spray pipe is obtained.
Disclosure of Invention
The invention aims to overcome the defect of low total pressure of airflow at the outlet of a traditional oxygen-iodine chemical laser nozzle, and provides a high-recovery-pressure injection nozzle for an oxygen-iodine chemical laser.
The technical scheme adopted by the invention is as follows: a high-pressure restoring jet tube for oxygen-iodine laser is composed of two rows of array partitions, a subsonic jet tube directly connected to oxygen generator, and a subsonic jet tube with 5-th power curve
Wherein D isiDiameter of any point on the subsonic nozzle profile, DtIs the throat diameter, D is the nozzle inlet diameter, L is the length of the subsonic nozzle, as shown in fig. 2; the high-Mach-number spray pipe generates hypersonic airflow with Mach number of 4.5-5.0, is a typical supersonic spray pipe and is designed by using a classical characteristic line method, and the throat height of the supersonic spray pipe at the section is 0.2mm-0.3mm, and the outlet height of the supersonic spray pipe at the section is 5.3mm-7.5 mm. The device is a three-dimensional device and is not specially processed in the unfolding direction.
The invention has the following advantages: the set of injection type spray pipes generate high total pressure I through the high Mach number spray pipe2/N2Jet air flow, main air flow O2(1Delta) generating airflow with the speed of sound through the subsonic nozzle, mixing the airflow with the airflow at the speed of sound through the baffle plate in an enhanced mode, and further generating mixed airflow with high total pressure and low static pressure, wherein the total pressure of the airflow after passing through the optical cavity is approximately 300torr, and the static pressure of the airflow after passing through the diffuser can be approximately 100 torr. Therefore, the high-recovery-pressure injection type spray pipe can generate high total-pressure airflow, so that the volume of a pressure recovery system of the chemical laser is greatly reduced.
Drawings
Fig. 1 is a schematic diagram of an oxygen-iodine chemical laser high recovery pressure ejector nozzle.
FIG. 2 is a schematic diagram of a 5-power curve subsonic nozzle design.
FIG. 3 is a CFD calculation for a high recovery pressure jet nozzle.
Wherein 1-subsonic velocity spray pipe and 2-high Mach number spray pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments for a high recovery pressure ejector nozzle for an oxygen-iodine chemical laser. It is intended to illustrate only some embodiments of the invention and should not be construed as limiting the scope of the invention in any way.
The invention relates to a high-recovery-pressure injection spray pipe for an oxygen-iodine chemical laser, wherein one end of the injection spray pipe is connected with an oxygen generator, and the other end of the injection spray pipe is connected with an optical cavity. The nozzle design is shown in FIG. 1, where 1 denotes the main gas flow O2(1Delta) passing through the subsonic nozzle, wherein the Mach number of the air flow at the outlet of the nozzle is 0.8-1.0; 2 is a high Mach number nozzle, I2/N2The Mach number of the air flow after the jet air flow passes through the jet pipe can reach 4.5-5.0. The two air flows are mixed by the baffle at the tail end of the spray pipe.
The high recovery pressure ejector nozzle includes: a subsonic nozzle 1 for connection with an oxygen generator and a high mach number nozzle 2 connected to the iodine chamber. The results of Computational Fluid Dynamics (CFD) simulation are shown in FIG. 3, and it can be seen that the total pressure of the exit gas flow of the ejector nozzle reaches 2000torr, the average Mach number of the gas flow reaches 4.5, and the main source of the total pressure of the gas flow is I2/N2Injecting air flow. The total pressure of the outlet of the high-recovery pressure injection spray pipe is high, and the gas can be directly discharged into the atmosphere only by using one-stage injection, so that the volume and the weight of pressure recovery are greatly reduced.
The high-recovery-pressure injection nozzle of the oxygen-iodine chemical laser has the advantages of simple structure and high efficiency, and is particularly suitable for realizing the high recovery pressure of the oxygen-iodine chemical laser.
Claims (4)
1. The utility model provides a draw and penetrate spray tube that is used for oxygen iodine chemical laser's high recovery pressure which characterized in that: the device is composed of two rows of parallel and spaced partition plates, and a subsonic spray pipe structure is formed between the two rows of partition plates and is used as a main air flow channel; the partition board is provided with a high-Mach-number spray pipe which is used as an injection airflow channel; the main airflow and the ejection airflow have the same direction;
on a plane parallel to the main airflow direction, taking the main airflow direction as an X axis and taking the direction vertical to the main airflow direction as a Y axis;
x is the value of a point x on the outline;
the shape line of the subsonic nozzle is designed by using a 5 th power curve, and the specific formula is
Wherein D isiIs the diameter of any point on the contour line of the subsonic nozzle, DtIs the diameter of the throat, D is the diameter of the entrance of the subsonic nozzle, and L is the length of the subsonic nozzle in the Y-axis direction.
2. The ejector nozzle of claim 1, wherein: the Mach number of the airflow at the outlet of the subsonic nozzle is 0.8-1.0.
3. The ejector nozzle of claim 1, wherein: the high mach number nozzle produces a hypersonic gas flow with a mach number of 4.5 to 5.0, and is typically a supersonic nozzle having a throat height of 0.2mm to 0.3mm and an exit height of 5.3mm to 7.5 mm.
4. The ejector nozzle according to claim 1, 2 or 3, wherein: one end of the injection spray pipe is connected with the oxygen generator, and the other end of the injection spray pipe is connected with the optical cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396228.1A CN111211468B (en) | 2018-11-22 | 2018-11-22 | High-recovery-pressure injection spray pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396228.1A CN111211468B (en) | 2018-11-22 | 2018-11-22 | High-recovery-pressure injection spray pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111211468A CN111211468A (en) | 2020-05-29 |
| CN111211468B true CN111211468B (en) | 2020-12-29 |
Family
ID=70787977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811396228.1A Active CN111211468B (en) | 2018-11-22 | 2018-11-22 | High-recovery-pressure injection spray pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111211468B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030035458A1 (en) * | 2001-08-20 | 2003-02-20 | Neumann David K. | System for producing singlet delta oxygen and laser |
| US20040050979A1 (en) * | 2002-09-13 | 2004-03-18 | George Emanuel | Laser nozzle and iodine injection for coil |
| JP2005116643A (en) * | 2003-10-03 | 2005-04-28 | Oyo Kogaku Kenkyusho | Chemical oxygen iodine laser and its mixing nozzel |
| CN101079529A (en) * | 2006-05-26 | 2007-11-28 | 中国科学院大连化学物理研究所 | Oxygen-iodine chemical laser ultrasonic oxygen iodine mixing spraying pipe with nitrogen as the dilution gas |
| CN103887692A (en) * | 2012-12-21 | 2014-06-25 | 中国科学院大连化学物理研究所 | Concurrent flow ultrasonic oxygen-iodine mixing nozzle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4270600B2 (en) * | 1998-04-09 | 2009-06-03 | 川崎重工業株式会社 | Iodine mixing nozzle in iodine laser |
-
2018
- 2018-11-22 CN CN201811396228.1A patent/CN111211468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030035458A1 (en) * | 2001-08-20 | 2003-02-20 | Neumann David K. | System for producing singlet delta oxygen and laser |
| US20040050979A1 (en) * | 2002-09-13 | 2004-03-18 | George Emanuel | Laser nozzle and iodine injection for coil |
| JP2005116643A (en) * | 2003-10-03 | 2005-04-28 | Oyo Kogaku Kenkyusho | Chemical oxygen iodine laser and its mixing nozzel |
| CN101079529A (en) * | 2006-05-26 | 2007-11-28 | 中国科学院大连化学物理研究所 | Oxygen-iodine chemical laser ultrasonic oxygen iodine mixing spraying pipe with nitrogen as the dilution gas |
| CN103887692A (en) * | 2012-12-21 | 2014-06-25 | 中国科学院大连化学物理研究所 | Concurrent flow ultrasonic oxygen-iodine mixing nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111211468A (en) | 2020-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111322278B (en) | Supersonic air ejector | |
| CN104847708B (en) | Supersonic Ejector | |
| CN104929990B (en) | Injector jet pipe | |
| US3545886A (en) | Ejector | |
| JP2713814B2 (en) | Ejector for compressible fluid | |
| CN103133430A (en) | Efficient slotted multi-nozzle enhancing mixing ejector | |
| CN112483479B (en) | Static oscillating jet injection supercharging device | |
| CN104343752A (en) | Thermocompressor | |
| CN111211468B (en) | High-recovery-pressure injection spray pipe | |
| JP2011115771A (en) | Fine air bubble generator for microbubble shower | |
| CN112461493B (en) | A spray tube, injection unit and air ejector for ejector | |
| CN111211467B (en) | Efficient diffusion device for oxygen-iodine chemical laser | |
| CN103821365A (en) | Supersonic-speed airflow generating and air return preventing device for concrete sprayer | |
| KR101200284B1 (en) | Performance improvement of the vacuum ejector system using a shock wave generator | |
| CN103887684B (en) | Jet pipe module for horizontal multiple abscess iodine mixing jet tube experimentation | |
| WO1999031392A1 (en) | Liquid-gas ejector | |
| JPH03260405A (en) | Coanda nozzle | |
| CN111120422B (en) | Vacuumizing ejector and engine vacuumizing method | |
| RU2408960C1 (en) | Gas-dynamic channel for continuous chemical laser having active diffuser in pressure recovery system | |
| US3936771A (en) | Subsonic flow aerodynamic window for high energy laser | |
| CN110559895A (en) | Oscillating jet type micro-nano bubble generating device | |
| CN218894741U (en) | Integrated pump | |
| CN109273978A (en) | Low temperature high static pressure oxygen iodine chemical laser | |
| CN115126730B (en) | Abnormal shape even spouts structure sprayer | |
| CN113340559B (en) | Supersonic velocity spray pipe aerodynamic force measurement system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |