CN111963338A - Flow guiding device of gas branch pipeline - Google Patents
Flow guiding device of gas branch pipeline Download PDFInfo
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- CN111963338A CN111963338A CN202010803585.6A CN202010803585A CN111963338A CN 111963338 A CN111963338 A CN 111963338A CN 202010803585 A CN202010803585 A CN 202010803585A CN 111963338 A CN111963338 A CN 111963338A
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- outlet
- gas
- guide device
- flow guide
- flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/52—Injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/46—Feeding propellants using pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/56—Control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipe Accessories (AREA)
Abstract
A flow guide device of a gas branch pipeline comprises an inlet, two main outlets, an auxiliary outlet, inlet blades, two outlet large blades, an outlet half hole, a middle small hole and a small corrugated pipe. The flow guide device is of an integrally formed structure which is communicated with each other from the inlet to the outlet. The diversion device of the gas branch pipeline is arranged at the turbine outlet of the liquid rocket engine, is used as a key component for adjusting the gas flow of the branch pipeline of the single-turbine pump double-thrust chamber liquid rocket engine, generally has the condition of uneven flow on other power machines with single inlet incoming flow and double outlets, and can also be used for adjusting the flow of two outlet pipes according to actual requirements.
Description
Technical Field
The invention relates to a diversion device of a gas branch pipeline, in particular to a diversion device of a gas branch pipeline, which has an inlet rectification function and has an adjustable branch outlet flow.
Background
For a single-turbine pump double-thrust chamber liquid rocket engine, because the airflow at the turbine outlet has a rotation direction and a vortex, the flow in two branch pipelines with symmetrical structures at the vortex outlet is uneven, the flow field is uneven, and the thrust of the thrust chamber has certain deviation. A flow guide device is needed at the position of the double branch pipes at the outlet of the turbine, so that the uniformity of the flow field of the branch pipes is improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the flow guiding device of the gas branch pipeline is provided, the problems of uneven flow and flow field of double outlet pipes of a turbine of the liquid rocket engine with a single turbine pump and double thrust chambers are solved, the problems of uneven flow of other power mechanical branch pipelines with a single inlet and double outlets are solved, and the flow of the two outlet pipes can be adjusted according to actual needs.
The technical solution adopted by the invention is as follows:
a flow guide device of a gas branch line, comprising: an inlet, a first outlet, a second outlet, a secondary outlet, and an inlet vane;
the diversion device is of an integrally formed structure which is communicated with each other from the inlet to the outlet, the first outlet and the second outlet are used as main outlets and are the same in structure and symmetrically distributed, an auxiliary outlet is arranged between the first outlet and the second outlet and is positioned in the center of the diversion device; the inlet is divided into an inner area and an outer area, wherein one area is an outer ring area with inlet blades, and the other area is an inner ring area which directly flows to the auxiliary outlet; gas flows from the outer ring region to the first and second outlets.
Furthermore, the wall edges of the first outlet and the second outlet are provided with outlet half holes for adjusting the gas flow of the branch pipe.
Furthermore, a small hole is arranged in the middle of the wall surface of the auxiliary outlet, and the small hole is communicated with the first outlet and the second outlet and used for adjusting the gas flow of the branch pipe.
Furthermore, the inlet blades are uniformly arranged in the circumferential direction of the fluid inlet, are plate-shaped blades with the same thickness and are used for rectifying and improving the uneven flow field in the incoming flow direction.
The first outlet large blade and the second outlet large blade are both of smooth streamline wall surface structures, are in smooth transition with the inlet blade, and are used for guiding, regulating an outlet flow field, reducing vortexes in the flow field and reducing downstream flow resistance.
Further, the device also comprises a corrugated pipe which is arranged on the secondary outlet and is used for compensating the deformation of the material in a high-temperature environment.
Furthermore, the first outlet and the second outlet are streamline curved structures which are adaptive to the shapes of the branch pipes, the wall surfaces of the first outlet and the second outlet are variable-section annular blades, and the flow regulation of the two main outlets is realized by adjusting the shapes of the wall surfaces; the auxiliary outlet is of a streamline curved surface structure.
Further, the guiding device is processed in a casting or 3D printing mode, and high-temperature alloy, corrosion-resistant stainless steel or other materials meeting the use requirements can be selected according to the use environment.
Furthermore, an inlet pipe of the gas is connected with an inlet of the flow guide device, and a first outlet and a second outlet of the flow guide device adapt to the shapes of the two gas outlet pipes and are respectively matched with the two gas outlet pipes; and an auxiliary outlet of the flow guide device is matched with a third gas outlet pipe.
The gas flows into the flow guide device from the inlet pipe, the inlet blades of the flow guide device rectify the uneven gas flowing in, the rectified gas is rectified again by the first outlet large blades and the second outlet large blades and then flows out through the first outlet and the second outlet respectively, and the half outlet hole is used for adjusting the gas flow of the branch pipe;
the first outlet, the second outlet and the auxiliary outlet are communicated through the middle small hole, the other part of gas flowing into the flow guide device flows to the auxiliary outlet, when the gas pressure in the first outlet is too large, the gas pressure in the second outlet is too small, the balance is carried out through the middle small hole, the part of gas in the first outlet flows into the auxiliary outlet through the middle small hole, the part of gas in the auxiliary outlet flows into the second outlet through the middle small hole, and the rest of gas flows out of the auxiliary outlet, so that the gas pressure balance of the first outlet and the second outlet is realized, and vice versa.
Compared with the prior art, the invention has the advantages that:
(1) the invention relates to a flow guide device which is suitable for an unstable flow field with a rotational direction and a vortex existing in inlet airflow and needs to adjust the flow of each branch pipe. The gas flow regulating device is used as a key component for regulating branch path gas flow of the single-turbine pump double-thrust chamber liquid rocket engine, and solves the problems of uneven flow and flow field of double outlet pipes of a turbine of the existing single-turbine pump double-thrust chamber liquid rocket engine.
(2) The invention adopts the structure that the inlet straight blade is combined with the outlet streamline large blade, which can improve the uneven flow field in the incoming flow direction and reduce the flow loss in the flow guiding device.
(3) The wall surface of the auxiliary outlet is provided with the middle small hole, so that the two main outlets and the auxiliary outlet are communicated through the middle small hole, and the effects of regulating the flow of each branch pipe and balancing the pressure are achieved.
(4) Compared with the common flow guide device, the flow guide device can flexibly control the flow of each branch pipe, and for an uneven flow field, the flow guide device can ensure that the velocity distribution in the flow field is more uniform and the fluid separation area in a pipeline is reduced.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the present invention;
fig. 4 is a schematic view of the installation of the present invention.
Detailed Description
The invention relates to a gas branch pipeline flow guiding device with an inlet rectifying function and an adjustable branch outlet flow, which is particularly suitable for an environment with a rotary direction and a vortex flow of an inlet incoming flow and is used as a key component for adjusting the branch pipeline gas flow of a single-turbine-pump double-thrust-chamber liquid rocket engine. On other power machines with single inlet incoming flow and double outlets, the condition of uneven flow generally exists, and the flow guide device can also be used for adjusting the flow of two outlet pipes according to actual needs. The structure principle of the flow guiding device can also be suitable for more than two multi-outlet branch pipelines.
As shown in fig. 1, 2 and 3, the structure of the diversion device of the gas branch pipeline of the present invention is schematically illustrated. The device comprises an inlet 1, a first outlet 2, a second outlet 3, an auxiliary outlet 4, an inlet blade 5, a first outlet large blade 6, a second outlet large blade 7, an outlet half hole 8, a middle small hole 9 and a small corrugated pipe 10.
The whole flow guide device is of an integrally formed structure which is communicated with each other from the inlet to the outlet, and can be connected with the branch pipe in a welding or flange connection mode. The first outlet 2 and the second outlet 3 are used as main outlets and are symmetrically distributed, an auxiliary outlet 4 is arranged between the first outlet 2 and the second outlet 3, and the auxiliary outlet 4 is positioned in the center of the flow guide device; the inlet 1 is divided into an inner area and an outer area, wherein one area is an outer ring area with inlet blades 5, and the other area is an inner ring area which directly flows to the auxiliary outlet 4; the gas flows from the outer ring region to the first outlet 2 and the second outlet 3.
The wall edges of the first outlet 2 and the second outlet 3 are provided with outlet half holes 8 for adjusting the gas flow of the branch pipe. The number of outlet half-orifices 8 is sized according to the need for flow regulation.
The wall surface of the auxiliary outlet 4 is provided with 2 middle small holes 9 which lead to the first outlet 2 and the second outlet 3, so that the two main outlets and the auxiliary outlet are communicated through the middle small holes, and the functions of adjusting the flow of each branch pipe and balancing the pressure are achieved.
The inlet vanes 5 are uniformly arranged in the circumferential direction of the fluid inlet and are shaped as plate-shaped vanes of equal thickness to ensure the strength and rigidity of the vanes. The straight blade at the inlet plays a role in guiding flow, improves the uneven flow field in the incoming flow direction and reduces the flow loss in the guiding device.
The first outlet large blade 6 is arranged in the first outlet 2, the second outlet large blade 7 is arranged in the second outlet 3, and the first outlet large blade 6 and the second outlet large blade 7 are both of smooth streamline wall surface structures and are in smooth transition with the inlet blade 5, so that the flow guide vane is used for guiding flow, regulating an outlet flow field, reducing vortexes in the flow field and reducing downstream flow resistance.
The invention adopts a structure that the inlet straight blade is combined with the outlet streamline large blade, which can improve the uneven flow field in the incoming flow direction and reduce the flow loss in the flow guiding device.
And the small corrugated pipe 10 is arranged on the auxiliary outlet 4 and is used for compensating the deformation of materials in a high-temperature environment, so that the structural reliability of the device in the high-temperature environment is improved, and if the flow guide device works in a non-high-temperature environment, the small corrugated pipe 10 can be eliminated.
The first outlet 2 and the second outlet 3 are streamline curved structures adapting to the shapes of the branch pipes, the wall surfaces of the first outlet 2 and the second outlet 3 are variable-section annular blades, and the flow regulation of the two main outlets is realized by adjusting the shapes of the wall surfaces; the auxiliary outlet 4 is of a streamline curved surface structure. The specific shape parameters are adjusted as required.
The flow guide device is processed in a casting or 3D printing mode, and high-temperature alloy, corrosion-resistant stainless steel or other materials meeting the use requirements are selected according to the use environment requirements.
Fig. 4 shows a method for connecting the diversion device with the inlet pipe and the outlet pipe by using a flange connection mode, and the connection mode of the flange butt joint surface can be changed into a welding mode.
The gas inlet pipe is connected with the inlet 1 of the flow guide device, and the first outlet 2 and the second outlet 3 of the flow guide device are adapted to the shapes of the two gas outlet pipes and are respectively matched with the two gas outlet pipes; the secondary outlet 4 of the flow guiding device is matched with a third gas outlet pipe.
The gas flows into the flow guide device from the inlet pipe, the inlet blades 5 of the flow guide device rectify the uneven gas flowing in, the rectified gas is rectified again by the first outlet large blades 6 and the second outlet large blades 7 and then flows out through the first outlet 2 and the second outlet 3 respectively, and the outlet half-hole 8 is used for adjusting the gas flow of the branch pipe;
the first outlet 2, the second outlet 3 and the auxiliary outlet 4 are communicated through the middle small hole 9, the other part of gas flowing into the flow guide device flows to the auxiliary outlet 4, when the gas pressure in the first outlet 2 is too large and the gas pressure in the second outlet 3 is too small, the balance is performed through the middle small hole 9, part of gas in the first outlet 2 flows into the auxiliary outlet 4 through the middle small hole 9, part of gas in the auxiliary outlet 4 flows into the second outlet 3 through the middle small hole 9, and the rest of gas flows out of the auxiliary outlet 4 to realize the balance of the gas pressure of the first outlet 2 and the second outlet 3, and vice versa.
When the gas is high-temperature gas, the small corrugated pipe 10 on the auxiliary outlet 4 can also compensate the deformation of the flow guide device caused by the heating of the material, and the structural reliability of the device in a high-temperature environment is improved.
The flow guiding device of the gas branch pipeline provided by the invention is arranged at the turbine outlet of the liquid rocket engine, is used as a key component for adjusting the gas flow of the branch pipeline of the single-turbine-pump double-thrust-chamber liquid rocket engine, and can balance the flow and pressure of double outlets. On other power machines with single inlet incoming flow and double outlets, the condition of uneven flow generally exists, and the flow guide device can also be used for adjusting the flow of two outlet pipes according to actual needs.
Example (b):
for example, in a certain type of liquid rocket engine, the high-temperature gas flow at the outlet of the turbine is about 1100kg/s, the gas at the outlet of the turbine has a spiral direction and belongs to an unstable flow field with a complex vortex, and in a branch pipeline without a diversion device, the flow difference of two branch outlet pipelines reaches more than 9kg/s, and the engine thrust deviation exceeds 2.5 percent. By utilizing the design method provided by the patent, the flow guide device for the liquid rocket engine is designed, and part of parameters are as follows: the inlet straight blades are 12, the wall surface edges of the first outlet and the second outlet are respectively provided with 3 outlet half holes, and the diameter size of each outlet half hole is 18 mm; the outlet pipe of the secondary path is provided with an expansion joint for compensating the temperature deformation of the flow guide device caused by high-temperature gas; two small holes in the middle are arranged on the auxiliary outlet, the sizes of the small holes are 65mm and 36mm respectively, and the flow guiding device of the structural scheme can reduce the flow difference of the two branch pipelines to be within 0.5 Kg/s. It can be seen that the gas flow distribution of the branch pipeline at the outlet of the turbine of the liquid rocket engine is more balanced after the flow guide device is installed.
While the invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art to which the invention pertains will appreciate that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A flow guide device of a gas branch line, characterized by comprising: an inlet (1), a first outlet (2), a second outlet (3), a secondary outlet (4) and inlet vanes (5);
the flow guide device is of an integrally formed structure which is communicated with each other from the inlet to the outlet, the first outlet (2) and the second outlet (3) are used as main outlets and are identical in structure and symmetrically distributed, an auxiliary outlet (4) is arranged between the first outlet (2) and the second outlet (3), and the auxiliary outlet (4) is positioned in the center of the flow guide device; the inlet (1) is divided into an inner area and an outer area, wherein one area is an outer ring area with inlet blades (5), and the other area is an inner ring area which directly flows to the auxiliary outlet (4); the gas flows from the outer ring region to the first outlet (2) and the second outlet (3).
2. The flow guide device of a gas branch line according to claim 1, wherein: the wall edges of the first outlet (2) and the second outlet (3) are provided with outlet half holes (8) for adjusting the gas flow of the branch pipe.
3. The flow guide device of a gas branch line according to claim 1, wherein: the wall surface of the auxiliary outlet (4) is provided with 2 middle small holes (9) which are respectively communicated with the first outlet (2) and the second outlet (3) and used for adjusting the gas flow of the branch pipe.
4. The flow guide device of a gas branch line according to claim 1, wherein: the inlet blades (5) are uniformly arranged in the circumferential direction of the fluid inlet, are plate-shaped blades with the same thickness and are used for rectifying and improving the nonuniform flow field in the incoming flow direction.
5. The flow guide device of a gas branch line according to claim 1, wherein: the novel high-efficiency.
6. The flow guide device of a gas branch line according to claim 1, wherein: the device also comprises a corrugated pipe (10) which is arranged on the auxiliary outlet (4) and is used for compensating the deformation of the material in a high-temperature environment.
7. The flow guide device of a gas branch line according to claim 1, wherein: the first outlet (2) and the second outlet (3) are streamline curved structures adapting to the shapes of the branch pipes, the wall surfaces of the first outlet (2) and the second outlet (3) are variable-section annular blades, and the flow regulation of the two main outlets is realized by adjusting the shapes of the wall surfaces; the auxiliary outlet (4) is of a streamline curved surface structure.
8. The flow guide device of a gas branch line according to claim 1, wherein: the flow guide device is processed in a casting or 3D printing mode, and high-temperature alloy or stainless steel is selected as a material.
9. The flow guide device of a gas branch line according to claim 1, wherein: the gas inlet pipe is connected with the inlet (1) of the flow guide device, and the first outlet (2) and the second outlet (3) of the flow guide device are adapted to the shapes of the two gas outlet pipes and are respectively matched with the two gas outlet pipes; the auxiliary outlet (4) of the flow guide device is matched with the third gas outlet pipe.
10. The flow guide device of a gas branch line according to claim 9, wherein: the gas flows into the flow guide device from the inlet pipe, the inlet blades (5) of the flow guide device rectify the flowing nonuniform gas, the rectified gas is rectified again by the first outlet large blades (6) and the second outlet large blades (7) and then flows out through the first outlet (2) and the second outlet (3) respectively, and the outlet half hole (8) is used for adjusting the gas flow of the branch pipe;
the first outlet (2), the second outlet (3) and the auxiliary outlet (4) are communicated through the middle small hole (9), the other part of gas flowing into the flow guide device flows to the auxiliary outlet (4), when the gas pressure in the first outlet (2) is too large and the gas pressure in the second outlet (3) is too small, the balance is carried out through the middle small hole (9), part of gas in the first outlet (2) flows into the auxiliary outlet (4) through the middle small hole (9), part of gas in the auxiliary outlet (4) flows into the second outlet (3) through the middle small hole (9), and the rest of gas flows out from the auxiliary outlet (4) to realize the balance of the gas pressure of the first outlet (2) and the second outlet (3) and vice versa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803585.6A CN111963338B (en) | 2020-08-11 | 2020-08-11 | Flow guiding device of gas branch pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803585.6A CN111963338B (en) | 2020-08-11 | 2020-08-11 | Flow guiding device of gas branch pipeline |
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| Publication Number | Publication Date |
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| CN111963338A true CN111963338A (en) | 2020-11-20 |
| CN111963338B CN111963338B (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010803585.6A Active CN111963338B (en) | 2020-08-11 | 2020-08-11 | Flow guiding device of gas branch pipeline |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144985A (en) * | 1995-11-22 | 1997-06-03 | Mitsubishi Heavy Ind Ltd | Straightening device of fluid passage |
| AU3776800A (en) * | 1996-03-11 | 2000-07-27 | Anadrill International, S.A. | Method and apparatus for establishing branch wells at a node of a parent well |
| US20050152779A1 (en) * | 2004-01-09 | 2005-07-14 | Morgan Williams | Inlet partial blades for structural integrity and performance |
| CN104948347A (en) * | 2014-03-31 | 2015-09-30 | 北京航天动力研究所 | Thrust chamber collector with flow uniformizing function |
| US20160222919A1 (en) * | 2015-02-04 | 2016-08-04 | Airbus Ds Gmbh | Turbopump for a rocket engine having a radial stage |
| CN106437880A (en) * | 2016-08-31 | 2017-02-22 | 无锡康明斯涡轮增压技术有限公司 | Turbine end structure for turbocharger |
| CN208536638U (en) * | 2018-06-28 | 2019-02-22 | 华电重工股份有限公司 | A kind of direct air cooling system and turbine discharge distributor gear |
| CN110821712A (en) * | 2019-10-23 | 2020-02-21 | 西安航天动力研究所 | Low temperature turbine pump high temperature gas outlet end connection structure |
| CN111441876A (en) * | 2020-04-01 | 2020-07-24 | 北京深蓝航天科技有限公司 | Liquid rocket fuel conveying structure for multiple engines in parallel connection |
-
2020
- 2020-08-11 CN CN202010803585.6A patent/CN111963338B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144985A (en) * | 1995-11-22 | 1997-06-03 | Mitsubishi Heavy Ind Ltd | Straightening device of fluid passage |
| AU3776800A (en) * | 1996-03-11 | 2000-07-27 | Anadrill International, S.A. | Method and apparatus for establishing branch wells at a node of a parent well |
| US20050152779A1 (en) * | 2004-01-09 | 2005-07-14 | Morgan Williams | Inlet partial blades for structural integrity and performance |
| CN104948347A (en) * | 2014-03-31 | 2015-09-30 | 北京航天动力研究所 | Thrust chamber collector with flow uniformizing function |
| US20160222919A1 (en) * | 2015-02-04 | 2016-08-04 | Airbus Ds Gmbh | Turbopump for a rocket engine having a radial stage |
| CN106437880A (en) * | 2016-08-31 | 2017-02-22 | 无锡康明斯涡轮增压技术有限公司 | Turbine end structure for turbocharger |
| CN208536638U (en) * | 2018-06-28 | 2019-02-22 | 华电重工股份有限公司 | A kind of direct air cooling system and turbine discharge distributor gear |
| CN110821712A (en) * | 2019-10-23 | 2020-02-21 | 西安航天动力研究所 | Low temperature turbine pump high temperature gas outlet end connection structure |
| CN111441876A (en) * | 2020-04-01 | 2020-07-24 | 北京深蓝航天科技有限公司 | Liquid rocket fuel conveying structure for multiple engines in parallel connection |
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| CN111963338B (en) | 2022-08-12 |
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