CN107940157B - Regenerative cooling gas guide pipe and processing method thereof - Google Patents
Regenerative cooling gas guide pipe and processing method thereof Download PDFInfo
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- CN107940157B CN107940157B CN201711160109.1A CN201711160109A CN107940157B CN 107940157 B CN107940157 B CN 107940157B CN 201711160109 A CN201711160109 A CN 201711160109A CN 107940157 B CN107940157 B CN 107940157B
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- liquid collecting
- cooling section
- conduit
- cooling
- collecting cavity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to a regenerative cooling gas guide pipe, in particular to a machining method of a double-layer guide pipe machine with a cooling channel, which can be used as a conveying pipeline of high-temperature, high-pressure and aggressive media in heat energy and power mechanical equipment and comprises a guide pipe cooling section and a liquid collecting ring assembly connected to the inlet end and/or the outlet end of the guide pipe cooling section; the conduit cooling section comprises an outer conduit and an inner conduit, and a cooling channel is arranged between the outer conduit and the inner conduit along the axial direction; be provided with the drainage hole on the collection liquid ring subassembly, collect the inside first annular collection liquid chamber that is provided with drainage hole intercommunication of liquid ring subassembly, first annular collection liquid chamber and cooling channel intercommunication, accessible adjustment cooling medium flow control outer wall operating temperature reduces structure thermal strain and thermal stress, improves the operational reliability of gas pipe.
Description
Technical Field
The invention relates to a regenerative cooling gas guide pipe, in particular to a machining method of a double-layer guide pipe with a cooling channel, which can be used as a conveying pipeline of high-temperature, high-pressure and aggressive media in heat energy and power mechanical equipment.
Background
The existing gas conduit for conveying high-temperature, high-pressure and erosive media adopts a single-layer wall surface structure, the wall surface of the conduit directly bears the scouring of the high-temperature, high-pressure and erosive media, the temperature of the conduit wall is high, the working thermal strain is large, the local stress concentration of a pipeline and the position offset of a pipeline connecting end are caused, and the working reliability is influenced. Therefore, in an application environment with strict requirements on thermal deformation and thermal stress concentration of the pipeline structure, effective measures must be taken to control the wall temperature of the bearing part of the conduit structure and inhibit the thermal strain of the pipeline.
Disclosure of Invention
The invention aims to provide a regenerative cooling gas guide pipe and a processing method thereof, wherein the regenerative cooling gas guide pipe can effectively control the wall temperature of the guide pipe and reduce the thermal strain and the structural weight of the guide pipe.
The technical scheme of the invention is to provide a regenerative cooling gas guide pipe, which is characterized in that: comprises a guide pipe cooling section and a liquid collecting ring assembly connected at the inlet end and/or the outlet end of the guide pipe cooling section;
the conduit cooling section comprises an outer conduit and an inner conduit, and a cooling channel is arranged between the outer conduit and the inner conduit along the axial direction;
the liquid collecting ring assembly is provided with a drainage hole, a first annular liquid collecting cavity communicated with the drainage hole is formed in the liquid collecting ring assembly, and the first annular liquid collecting cavity is communicated with one end of the cooling channel.
When the inlet end of the conduit cooling section is connected with the liquid collecting ring assembly, cooling medium is introduced into the first annular liquid collecting cavity from the drainage hole of the inlet end liquid collecting ring assembly and then flows into the cooling channel, and after the conduit cooling section is cooled, the cooling medium is discharged from the other end of the cooling channel;
when the inlet end and the outlet end of the conduit cooling section are both connected with liquid collecting ring assemblies, cooling medium is introduced from the drainage holes of the liquid collecting ring assemblies at the inlet end, enters the first annular liquid collecting cavity and then flows into the cooling channel, and after the conduit cooling section is cooled, the cooling medium is discharged from the drainage holes of the liquid collecting ring assemblies connected to the outlet end of the conduit cooling section through the first annular liquid collecting cavity, and the discharged cooling medium is collected and drained;
when the liquid collecting ring assembly is only connected at the outlet end of the conduit cooling section, the cooling medium flows into the cooling channel, and after the conduit cooling section is cooled, the cooling medium is discharged from the drainage hole of the liquid collecting ring assembly connected at the outlet end of the conduit cooling section through the first annular liquid collecting cavity, and the discharged cooling medium is collected and drained in a centralized manner.
Preferably, the cooling channel is: the outer wall of the inner conduit is circumferentially distributed and axially extended, and the top of the milling groove is connected with the inner wall of the outer conduit.
Preferably, the liquid collecting ring assembly comprises a liquid collecting ring and a liquid collecting cavity ring cover, wherein an annular groove is formed in the circumferential direction of the outer wall of the liquid collecting ring, and the liquid collecting cavity ring cover is located in the annular groove and forms a first annular liquid collecting cavity with the bottom of the annular groove.
Preferably, the guide pipe cooling section is connected with the liquid collecting ring, a second annular liquid collecting cavity is formed at the joint, at least one shunting hole is further formed in the inner portion of the liquid collecting ring, the second annular liquid collecting cavity is communicated with the first annular liquid collecting cavity through the shunting hole, and the second annular liquid collecting cavity is communicated with one end of the milling groove;
when the inlet end of the conduit cooling section is connected with the liquid collecting ring assembly, cooling medium is introduced from the drainage hole of the liquid collecting ring assembly at the inlet end, sequentially passes through the first annular liquid collecting cavity, the shunting hole and the second annular liquid collecting cavity, and then flows into the cooling channel of the conduit cooling section, and after the conduit cooling section is cooled, the cooling medium is discharged from the other end of the cooling channel;
when the inlet end and the outlet end of the conduit cooling section are both connected with the liquid collecting ring assemblies, cooling medium is introduced from the drainage holes of the liquid collecting ring assemblies at the inlet end, sequentially passes through the first annular liquid collecting cavity, the shunting holes and the second annular liquid collecting cavity and then flows into the cooling channel, after the conduit cooling section is cooled, the cooling medium is discharged from the drainage holes of the liquid collecting ring assemblies connected at the outlet end of the conduit cooling section, and the discharged cooling medium is collected and drained in a centralized manner;
when the liquid collecting ring assembly is only connected at the outlet end of the conduit cooling section, the cooling medium flows into the cooling channel, and after the conduit cooling section is cooled, the cooling medium is discharged from the drainage hole after sequentially passing through the second annular liquid collecting cavity, the shunting hole and the first annular liquid collecting cavity, and the discharged cooling medium is collected and drained in a centralized manner.
Preferably, the conduit cooling section is a straight pipe cooling section or an angle elbow cooling section, or comprises at least one angle elbow cooling section and at least one straight pipe cooling section;
when the cooling device comprises at least one section of angle elbow cooling section and at least one section of straight pipe cooling section, an inner layer conduit of the angle elbow cooling section is connected with an inner layer conduit of the straight pipe cooling section, an outer layer conduit of the angle elbow cooling section is connected with an outer layer conduit of the straight pipe cooling section through a connecting ring, and a third annular liquid collecting cavity is formed among the connecting ring, the inner layer conduit of the angle elbow cooling section and the inner layer conduit of the straight pipe cooling section; milling grooves of the angle bent pipe cooling section and the straight pipe cooling section are communicated with a third annular liquid collecting cavity;
when the liquid collecting ring is connected with the inlet end of the straight pipe cooling section, cooling medium is introduced from the drainage hole at the inlet end, sequentially passes through the first annular liquid collecting cavity, the shunting hole, the second annular liquid collecting cavity, the straight pipe cooling section, the third annular liquid collecting cavity and the angle bent pipe cooling section, and is discharged from the other end of the milling groove after cooling of all the gas guide pipes is completed;
when the liquid collecting ring is connected with the outlet end of the straight pipe cooling section, the cooling medium is discharged from the drainage hole at the outlet end;
when the liquid collecting ring is connected with the elbow cooling section, cooling medium is introduced from the drainage hole at the inlet end, sequentially passes through the first annular liquid collecting cavity, the shunting hole, the second annular liquid collecting cavity, the angle elbow cooling section, the third annular liquid collecting cavity and the straight pipe cooling section, and is discharged from the drainage hole at the other end or the outlet end of the milling groove after cooling all the gas guide pipes;
when the liquid collecting ring is connected with the outlet end of the cooling section of the elbow, the cooling medium is discharged from the drainage hole at the outlet end.
Preferably, the flow distribution holes are uniformly distributed along the circumferential direction of the side end of the liquid collecting ring.
Preferably, the liquid collecting ring and the inner-layer conduit are made of high-temperature alloy which is high-temperature resistant and anti-corrosion; the liquid collecting cavity ring cover, the outer layer conduit and the connecting ring are all made of low-temperature-resistant high-strength stainless steel.
Preferably, the guide pipe cooling section is connected with the liquid collecting ring assembly in a welding mode;
the liquid collecting ring is welded with the liquid collecting cavity ring cover;
the top of the milling groove of the inner layer conduit is connected with the outer layer conduit through brazing;
the straight pipe cooling section is connected with the angle bent pipe cooling section through a connecting ring in a welding mode.
Preferably, the inner conduit of the cooling section of the angle elbow and the outer conduit of the cooling section of the angle elbow are welded by two semicircular elbows to form the angle elbow with a full-circle cross section; the connecting ring is also composed of two half rings.
The invention also provides a method for processing the regenerative cooling gas guide pipe, which comprises the following steps:
firstly, processing milling groove clusters which are distributed along the circumferential direction and extend axially on the outer wall of an inner-layer conduit;
step two, brazing the top of the milling groove cluster and the inner wall of the outer layer conduit to form a conduit cooling section;
thirdly, welding the liquid collecting ring and the liquid collecting cavity ring cover to form a liquid collecting ring assembly and form a first annular liquid collecting cavity;
step four: the guide pipe cooling section is welded with the liquid collecting ring assembly and forms a second annular liquid collecting cavity;
when the guide pipe comprises a straight pipe and an angle bent pipe, the straight pipe cooling section and the angle bent pipe cooling section are connected through a connecting ring in a welding mode, and a third annular liquid collecting cavity is formed.
The principle of the invention is as follows: the regenerative cooling gas conduit adopts a double-layer conduit structure, the outer conduit is a structure bearing part, the inner conduit is a cooling lining, the two conduits are arranged along the circumferential distribution, the cooling channel extends axially, the cooling medium flows in the cooling channel in a one-way mode and carries out heat convection with a contact wall surface, the heat transferred to the inner conduit from the high-temperature medium of the main gas conduit is continuously absorbed by the cooling medium and is discharged out of the gas conduit, and further the heat is prevented from being transferred to the outer conduit, the heat transfer quantity can be controlled by adjusting the flow of the cooling medium, the effect of separating the heat from the outer conduit is achieved, and the purposes of controlling the temperature of the outer wall and reducing the thermal strain of the structure are achieved.
In addition, the outer layer conduit of the regenerative cooling gas conduit is used as a main bearing part of the structure and is not in direct contact with high-temperature and aggressive media, so that high-strength stainless steel with better performance can be adopted, and the weight of the structure is reduced.
The invention has the beneficial effects that:
1. compared with the existing gas guide pipe for conveying high-temperature, high-pressure and corrosive media, the regenerative cooling gas guide pipe has the function of cooling the interlayer, can control the working temperature of the outer wall surface by adjusting the cooling medium flow, reduces the thermal strain and the thermal stress of the structure, and improves the working reliability of the gas guide pipe;
2. because the regenerative cooling gas conduit of the invention is beneficial to the weight reduction design of the structure due to the reduction of the working thermal stress, and the main bearing outer conduit is not contacted with high-temperature and erosive gas, the outer wall surface can be made of high-strength stainless steel with better performance, and the structural weight of the gas conduit can be further reduced;
3. the liquid collecting ring assembly, the straight pipe cooling section and the angle bent pipe cooling section are three independent functional sections, can form a complex space pipeline through the matching of different numbers of assemblies with different bending angles, and can be applied to different application environments.
Drawings
FIG. 1 is a sectional view of the entire structure of a regenerative cooling gas duct according to an embodiment;
FIG. 2 is an axial view of a straight tube cooling section of an embodiment regenerative cooling gas duct;
FIG. 3 is an enlarged axial view of a straight tube cooling section of the regenerative cooling gas duct of the embodiment;
FIG. 4 is an axial view of an angled elbow cooling section of an embodiment regenerative cooling gas conduit;
FIG. 5 is an enlarged axial detail view of the angled elbow cooling section of the regeneratively cooled fuel gas conduit of an embodiment;
FIG. 6 is a cross-sectional view of the junction of the liquid collection ring and the straight tube cooling section of the regenerative cooling gas conduit of the embodiment;
FIG. 7 is a cross-sectional view of the junction of the straight tube cooling section and the angled elbow cooling section of the regenerative cooling gas conduit of the embodiment;
FIG. 8 is a partial cross-sectional view of an angled elbow cooling section outlet of an embodiment regeneratively cooled combustion gas conduit.
In the figure: 1-liquid collecting ring, 2-liquid collecting cavity ring cover, 3-straight pipe cooling section inner layer conduit, 4-straight pipe cooling section outer layer conduit, 5-connecting ring, 6-angle elbow cooling section inner layer conduit, 7-angle elbow cooling section outer layer conduit, 8-first annular liquid collecting cavity, 9-second annular liquid collecting cavity, 10-third annular liquid collecting cavity, 11-shunting hole, 12-drainage hole and 13-milling groove cluster.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As can be seen from fig. 1, the regenerative cooling gas conduit of this embodiment includes a straight pipe cooling section and an angle elbow cooling section, that is, the basic form of the present invention mainly includes a liquid collecting ring 1, a liquid collecting cavity ring cover 2, a straight pipe cooling section inner layer conduit 3, a straight pipe cooling section outer layer conduit 4, a connecting ring 5, an angle elbow cooling section inner layer conduit 6, and an angle elbow cooling section outer layer conduit 7.
The seven parts form a combination of three functional modules: the liquid collecting ring 1 and the liquid collecting cavity ring cover 2 are welded to form a liquid collecting ring assembly, and a first annular liquid collecting cavity 8 is formed in the assembly; the inner layer conduit 3 of the straight pipe cooling section and the outer layer conduit 4 of the straight pipe cooling section form a straight pipe cooling section through brazing; the inner layer conduit 6 of the angle elbow cooling section and the outer layer conduit 7 of the angle elbow cooling section form the angle elbow cooling section through brazing.
Three combinations are connected to form a gas conduit assembly: the liquid collecting ring assembly is welded with the straight pipe cooling section to form a second annular liquid collecting cavity 9, and the straight pipe cooling section and the angle bent pipe cooling section are welded through a connecting ring 5 to form a third annular liquid collecting cavity 10.
In other embodiments, the gas conduits in other spatial layout forms can be formed by adjusting the number of the combined modules, the bending angle of the angle elbow pipe, and the like.
As can be seen from fig. 2 and 3, the straight pipe cooling section is formed by processing milling groove clusters 13 which are distributed along the circumferential direction and extend in the axial direction on the outer wall of the inner conduit 3 of the straight pipe cooling section, and then brazing the milling groove clusters 13 with the inner wall of the outer conduit 4 of the straight pipe cooling section, wherein the milling groove clusters 13 are circumferentially closed in a combination body to form a cooling channel. The inner layer conduit 3 of the straight pipe cooling section adopts high-temperature alloy, and the outer layer conduit 4 of the straight pipe cooling section adopts low-temperature-resistant high-strength stainless steel.
As can be seen from fig. 4 and 5, the angle elbow cooling section is formed by brazing an angle elbow cooling section inner conduit 6 and an angle elbow cooling section outer conduit 7, the angle elbow cooling section inner conduit 6 is made of high-temperature alloy, the angle elbow cooling section outer conduit 7 is made of low-temperature-resistant high-strength stainless steel, the angle elbow cooling section inner conduit 6 and the angle elbow cooling section outer conduit 7 are formed by welding two half pipes, milling groove clusters 13 which are distributed along the circumferential direction and extend axially are firstly processed on the outer walls of the two half pipes forming the angle elbow cooling section inner conduit 6, then the inner walls of the two half pipes are butted and welded to form the angle elbow cooling section inner conduit 6 with a full-circle cross section, then the two half pipes forming the angle elbow cooling section outer conduit 7 are buckled on the angle elbow cooling section inner conduit 6, and are welded and buckled to form a longitudinal welding line so as to form the complete angle elbow cooling section outer conduit 7, and finally, brazing the inner layer conduit 6 of the angle elbow cooling section and the outer layer conduit 7 of the angle elbow cooling section into a whole to form the angle elbow cooling section.
As can be seen from figure 6, the liquid collecting ring 1 and the liquid collecting cavity ring cover 2 form the liquid collecting ring assembly through welding, the liquid collecting cavity ring cover 2 consists of two half rings, the half rings are arranged in a notch preset in the liquid collecting ring 1 and form a first annular liquid collecting cavity 8, the circumferential position is adjusted when the two half rings are assembled, so that the position of the cooling medium drainage hole 12 meets the layout requirement, and finally four welding seams generated by assembling the two half rings are welded.
The straight tube cooling section is connected with the liquid collecting ring assembly in a welded mode, wherein the inner layer conduit 3 of the straight tube cooling section and the liquid collecting ring 1 are welded in a sealing mode along the circumferential direction from the inner side of the conduit, welding wires are filled in reserved welding grooves, the outer layer conduit 4 of the straight tube cooling section and the liquid collecting ring 1 are welded from the outer side of the conduit, and a second annular liquid collecting cavity 9 is formed after the two assemblies are connected. The cooling medium enters and fills the first annular liquid collecting cavity 8 from the drainage hole 12, then flows into the second annular liquid collecting cavity 9 through the shunting hole 11 in the liquid collecting ring 1, and then is shunted to each milling groove of the cooling channel of the straight pipe cooling section, and the cooling medium flows in the cooling channel in a single direction to cool the straight pipe cooling section.
As can be seen from fig. 7, the straight pipe cooling section and the angle elbow cooling section are welded together through the connecting ring 5, the connecting ring 5 is composed of two half rings, before the connecting ring 5 is welded, the inner layer conduit 3 of the straight pipe cooling section and the inner layer conduit 6 of the angle elbow cooling section are welded together, then the two half rings forming the connecting ring 5 are installed in the butt-joint ring grooves, four welding seams generated by assembling the two half rings are welded, so that the connection between the straight pipe cooling section and the angle elbow cooling section is completed, and a third annular liquid collecting cavity 10 is formed after the two sections of assemblies are connected. And the cooling medium flowing out of the straight pipe cooling section cooling channel fills the third annular liquid collecting cavity 10, and then is distributed into each milling groove of the angle bent pipe cooling section to cool the angle bent pipe cooling section.
As shown in fig. 8, at the end of the cooling section, the cooling medium exits the assembly through the outer portion of the milled grooves and the exiting cooling medium is not reused. And a liquid collecting ring assembly can be assembled at the tail end of the guide pipe according to requirements so as to realize centralized and collective drainage of the discharged cooling medium.
Claims (2)
1. A regenerative cooling gas conduit, characterized by: comprises a guide pipe cooling section and a liquid collecting ring assembly connected at the inlet end and/or the outlet end of the guide pipe cooling section;
the guide pipe cooling section comprises an outer-layer guide pipe and an inner-layer guide pipe, and a cooling channel is arranged between the outer-layer guide pipe and the inner-layer guide pipe along the axial direction;
a drainage hole (12) is formed in the liquid collecting ring assembly, a first annular liquid collecting cavity (8) communicated with the drainage hole (12) is formed in the liquid collecting ring assembly, and the first annular liquid collecting cavity (8) is communicated with the cooling channel;
the guide pipe cooling section comprises at least one section of angle bent pipe cooling section and at least one section of straight pipe cooling section;
an inner layer conduit (6) of the angle bent pipe cooling section is connected with an inner layer conduit (3) of the straight pipe cooling section, an outer layer conduit (7) of the angle bent pipe cooling section is connected with an outer layer conduit (4) of the straight pipe cooling section through a connecting ring (5), and a third annular liquid collection cavity (10) is formed between the connecting ring (5), the inner layer conduit (6) of the angle bent pipe cooling section and the inner layer conduit (3) of the straight pipe cooling section; milling grooves of the angle bent pipe cooling section and the straight pipe cooling section are communicated with a third annular liquid collecting cavity;
the inner layer conduit (6) of the angle elbow cooling section and the outer layer conduit (7) of the angle elbow cooling section are both welded by two semicircular elbows to form an angle elbow with a full-circle cross section; the connecting ring (5) is also composed of two semi-rings; when the inlet end of the conduit cooling section is connected with the liquid collecting ring assembly, cooling medium is introduced into the first annular liquid collecting cavity from the drainage hole of the inlet end liquid collecting ring assembly and then flows into the cooling channel, and after the conduit cooling section is cooled, the cooling medium is discharged from the other end of the cooling channel;
when the inlet end and the outlet end of the conduit cooling section are both connected with liquid collecting ring assemblies, cooling media are introduced from the drainage holes of the liquid collecting ring assemblies at the inlet end, enter the first annular liquid collecting cavity and then flow into the cooling channel, and after the conduit cooling section is cooled, the cooling media are discharged from the drainage holes of the liquid collecting ring assemblies connected to the outlet end of the conduit cooling section through the first annular liquid collecting cavity, and the discharged cooling media are collected and centrally drained;
when the liquid collecting ring assembly is only connected to the outlet end of the conduit cooling section, the cooling medium flows into the cooling channel, and after the conduit cooling section is cooled, the cooling medium is discharged from the drainage hole of the liquid collecting ring assembly connected to the outlet end of the conduit cooling section through the first annular liquid collecting cavity, and the discharged cooling medium is collected and drained in a centralized manner; the cooling channel is as follows: the outer wall of the inner layer conduit is circumferentially distributed and axially extended with milling groove clusters (13), and the top of each milling groove is connected with the inner wall of the outer layer conduit; the liquid collecting ring assembly comprises a liquid collecting ring (1) and a liquid collecting cavity ring cover (2), an annular groove is formed in the circumferential direction of the outer wall of the liquid collecting ring, and the liquid collecting cavity ring cover (2) is located in the annular groove and forms a first annular liquid collecting cavity (8) with the bottom of the annular groove; the guide pipe cooling section is connected with the liquid collecting ring (1), a second annular liquid collecting cavity (9) is formed at the joint, at least one shunting hole (11) is further formed in the liquid collecting ring (1), the second annular liquid collecting cavity (9) is communicated with the first annular liquid collecting cavity (8) through the shunting hole (11), and the second annular liquid collecting cavity (9) is communicated with one end of the milling groove; the shunting holes (11) are uniformly distributed along the circumferential direction of the side end of the liquid collecting ring (1); the liquid collecting ring (1) and the inner layer conduit are made of high-temperature alloy with high temperature resistance and erosion resistance; the liquid collecting cavity ring cover (2), the outer layer conduit and the connecting ring (5) are all made of low-temperature-resistant high-strength stainless steel; the guide pipe cooling section is welded with the liquid collecting ring assembly;
the liquid collecting ring (1) is welded with the liquid collecting cavity ring cover (2);
the top of the milling groove of the inner layer conduit is connected with the outer layer conduit through brazing;
the straight pipe cooling section is connected with the angle bent pipe cooling section through a connecting ring (5) in a welding mode.
2. A method of processing the regeneratively cooled fuel gas duct of claim 1, comprising the steps of:
firstly, processing milling groove clusters which are distributed along the circumferential direction and extend axially on the outer wall of an inner-layer conduit;
step two, brazing the top of the milling groove cluster and the inner wall of the outer layer conduit to form a conduit cooling section;
thirdly, welding the liquid collecting ring and the liquid collecting cavity ring cover to form a liquid collecting ring assembly and form a first annular liquid collecting cavity;
step four: the guide pipe cooling section is welded with the liquid collecting ring assembly and forms a second annular liquid collecting cavity;
the straight pipe cooling section and the angle bent pipe cooling section are connected through a connecting ring in a welding mode, and a third annular liquid collecting cavity is formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711160109.1A CN107940157B (en) | 2017-11-20 | 2017-11-20 | Regenerative cooling gas guide pipe and processing method thereof |
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| CN201711160109.1A CN107940157B (en) | 2017-11-20 | 2017-11-20 | Regenerative cooling gas guide pipe and processing method thereof |
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| CN107940157A CN107940157A (en) | 2018-04-20 |
| CN107940157B true CN107940157B (en) | 2020-07-24 |
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| CN102658066A (en) * | 2012-04-26 | 2012-09-12 | 葛明龙 | Catalytic decomposition low-concentration hydrogen peroxide reactor, combustion chamber and application thereof |
| CN104948347A (en) * | 2014-03-31 | 2015-09-30 | 北京航天动力研究所 | Thrust chamber collector with flow uniformizing function |
| CN105089852A (en) * | 2014-05-06 | 2015-11-25 | 中国航天科技集团公司第六研究院第十一研究所 | Combustion chamber inner liner cooling structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2519538C2 (en) * | 1975-05-02 | 1982-12-30 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Connection between the coolant inlet ring and the combustion chamber or thrust nozzle wall of a rocket engine |
| CN102539158B (en) * | 2011-12-23 | 2014-04-30 | 中国航天科技集团公司第六研究院第十一研究所 | Water-cooling sound velocity throat with small curvature radius and preparation method thereof |
| CN203604065U (en) * | 2013-12-20 | 2014-05-21 | 葛明龙 | Medium-concentration hydrogen peroxide/kerosene combustion chamber free of catalyst bed |
| CN203824761U (en) * | 2014-01-27 | 2014-09-10 | 西安航天动力试验技术研究所 | Water-cooled high-temperature combustion gas guiding apparatus for engine thermal environment test |
| CN103939705B (en) * | 2014-05-14 | 2016-07-13 | 江苏恒新能源科技有限公司 | A kind of wear-resisting cooling pipe |
| CN106640424A (en) * | 2016-10-26 | 2017-05-10 | 湖北航天技术研究院总体设计所 | Combustion chamber of liquid rocket engine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658066A (en) * | 2012-04-26 | 2012-09-12 | 葛明龙 | Catalytic decomposition low-concentration hydrogen peroxide reactor, combustion chamber and application thereof |
| CN104948347A (en) * | 2014-03-31 | 2015-09-30 | 北京航天动力研究所 | Thrust chamber collector with flow uniformizing function |
| CN105089852A (en) * | 2014-05-06 | 2015-11-25 | 中国航天科技集团公司第六研究院第十一研究所 | Combustion chamber inner liner cooling structure |
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