CN217455949U - Plug-in type conversion valve for hydraulic brake system of airplane - Google Patents
Plug-in type conversion valve for hydraulic brake system of airplane Download PDFInfo
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- CN217455949U CN217455949U CN202220724983.3U CN202220724983U CN217455949U CN 217455949 U CN217455949 U CN 217455949U CN 202220724983 U CN202220724983 U CN 202220724983U CN 217455949 U CN217455949 U CN 217455949U
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Abstract
The application provides cartridge formula conversion valve that aircraft hydraulic braking system used, cartridge formula conversion valve installs in the brake integrated valve, and cartridge formula conversion valve includes conversion valve core, conversion seat, conversion casing, guard circle I, sealing washer I, guard circle II, sealing washer II, wherein: the conversion shell is of a hollow tubular structure, a first groove is formed in the outer side of the middle pipe wall of the conversion shell along the circumferential direction, second grooves are formed in the outer sides of the pipe walls at two ends of the conversion shell along the circumferential direction, and the second grooves are symmetrically distributed on two sides of the first groove; two oil through holes are symmetrically arranged at the first groove position of the conversion shell; the second groove is used for mounting a protection ring II and a sealing ring II respectively; the conversion valve core is of a cylindrical structure, two ends of the conversion valve core are arranged to be chamfer structures, the conversion valve core is arranged in the inner cavity of the conversion shell, the shell is a hollow rotating body, so that the conversion valve core can move in the inner cavity of the conversion shell, and the conversion seat is of a hollow rotating body structure.
Description
Technical Field
The invention relates to the field of machinery, in particular to a plug-in type conversion valve for an aircraft hydraulic brake system.
Background
Because the traditional aircraft brake system is heavy in weight and low in reliability, newly-developed aircraft gradually develop towards the aspects of integration, miniaturization and high reliability, and the mature conversion valve structure is large in size, heavy in weight and free of integration, and cannot meet the requirement of a highly-integrated brake module.
Therefore, according to the market demand, a miniaturized, modularized and highly reliable plug-in type conversion valve is urgently needed.
Disclosure of Invention
In order to solve the problems that the traditional conversion valve in an aircraft brake system is large in size, heavy in weight and free of integration, the invention provides a structural design of a plug-in type conversion valve which is convenient to install and disassemble and can be used for high integration.
The specific technical scheme of the invention is as follows: the utility model provides a cartridge formula conversion valve that aircraft hydraulic braking system used, cartridge formula conversion valve installs in the brake integrated valve, and cartridge formula conversion valve includes conversion case 1, conversion seat 2, tool withdrawal groove 21, first terminal surface 23, second terminal surface 22, conversion casing 3, first groove 31, second groove 32, guard circle I4, sealing washer I5, guard circle II 6, sealing washer II 7, wherein:
the conversion shell 3 is of a hollow tubular structure, a first groove 31 is formed in the outer side of the middle pipe wall of the conversion shell 3 along the circumferential direction, second grooves 32 are formed in the outer sides of the pipe walls of the two ends of the conversion shell 3 along the circumferential direction, and the second grooves 32 are symmetrically distributed on the two sides of the first groove 31; two oil through holes are symmetrically arranged at the position of the first groove 31 of the conversion shell 3; the second groove 32 is used for mounting a protection ring II 6 and a sealing ring II 7 respectively;
the conversion valve core 1 is of a cylindrical structure, two ends of the conversion valve core 1 are arranged to be chamfer structures, and the conversion valve core 1 is arranged in the inner cavity of the conversion shell 3 so as to move in the inner cavity of the conversion shell 3;
the conversion seats 2 are hollow rotating bodies, the small ends of the two conversion seats 2 are respectively arranged in the two ends of the conversion shell 3, the outer diameter of the small end of each conversion seat 2 is equal to the inner diameter of the two ends of the conversion shell 3, and the aperture of the second end surface 22 of each conversion seat 2 is smaller than the diameter of the end surface of the chamfer structure of the conversion valve core 1; the inner cavities of the conversion base 2 and the conversion shell 3 form an oil path channel, and a protection ring I4 and a sealing ring I5 are fixedly arranged in a cavity between the small end of the conversion base 2 and the conversion shell 3. The conversion seat 2 is provided with a tool withdrawal groove 21, and the second end surface 22 of the conversion seat 2 is provided with a chamfer structure.
Specifically, the oil passage of the conversion seat 2 is a hole with phi 5 mm.
Specifically, the diameter of the conversion valve core 1 is in clearance fit with the inner diameter of the conversion shell 3.
Specifically, the diameter of the oil through hole of the conversion housing 3 is 6 mm;
the first slot 31 of the conversion housing 3 has a width of 7mm and a diameter of 12 mm;
the second slot 32 of the conversion housing 3 has a diameter of 14mm and a width of 3.4 mm.
Specifically, guard circle I4 is the annular seal structure of U-shaped for the cross section, and sealing washer I5 is the ring packing, and sealing washer I5 sets up in the U-shaped inslot of protecting ring I4.
Specifically, the angles between the chamfers arranged at the two ends of the conversion valve core 1 and the central axis of the conversion valve core 1 are 20 degrees, and the lengths of the chamfers are 1.8 mm.
Specifically, the tool withdrawal groove 21 of the conversion seat 2 is a groove with the width of 1mm and the diameter of 11.6 mm;
the axial length of the conversion valve core 1 is 14 mm.
Specifically, the conversion valve core 1 is made of martensitic stainless steel 4Cr 13;
the conversion seat 2 is made of 1Cr17Ni 2.
Specifically, the angle between the second end surface 22 of the transition seat 2 and the central axis of the transition seat 2 is 15 °.
The invention has the following beneficial effects: the product is small, light in weight, and cartridge integral type structure has satisfied brake module reliability height, and the quick diagnosis of trouble is kept apart fast, the maintenance duration that significantly reduces. The product design is mature, the assembly process is simplified, and the assembly and disassembly are simple and easy to implement.
Drawings
FIG. 1 is a schematic structural diagram of a plug-in type conversion valve for an aircraft hydraulic brake system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a conversion housing 3 provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of the conversion seat 2 provided in the embodiment of the present application;
in the figure: a changeover valve core 1; a conversion seat 2; a relief groove 21; a first end surface 23; a second end face 22; a conversion case 3; a first groove 31; a second groove 32; a protective ring I4; a sealing ring I5; a protective ring II 6; and a sealing ring II 7.
Detailed Description
The embodiment provides a plug-in type conversion valve for an aircraft hydraulic brake system, which is arranged in a brake integrated valve. The plug-in type conversion valve comprises a conversion valve core 1; a conversion seat 2; a conversion case 3; a protective ring I4; a sealing ring I5; a protective ring II 6; sealing washer II 7, wherein:
the conversion shell 3 is a hollow tubular structure, a first groove 31 is arranged on the outer side of the middle pipe wall of the conversion shell 3 along the circumferential direction, second grooves 32 are respectively arranged on the outer sides of the pipe walls at two ends of the conversion shell 3 along the circumferential direction, and the second grooves 32 are symmetrically distributed on two sides of the first groove 31; two oil through holes are symmetrically arranged at the position of the first groove 31 of the conversion shell 3; the second groove 32 is used for mounting a protection ring II 6 and a sealing ring II 7 respectively;
the conversion valve core 1 is of a cylindrical structure, two ends of the conversion valve core 1 are arranged to be chamfer structures, and the conversion valve core 1 is arranged in the inner cavity of the conversion shell 3 so as to move in the inner cavity of the conversion shell 3;
the conversion seats 2 are hollow rotating bodies, the small ends of the two conversion seats 2 are respectively arranged in the two ends of the conversion shell 3, the outer diameter of the small end of each conversion seat 2 is equal to the inner diameter of the two ends of the conversion shell 3, and the aperture of the second end surface 22 of each conversion seat 2 is smaller than the diameter of the end surface of the chamfer structure of the conversion valve core 1; the inner cavities of the conversion base 2 and the conversion shell 3 form an oil path channel, and a protection ring I4 and a sealing ring I5 are fixedly arranged in a cavity between the small end of the conversion base 2 and the conversion shell 3. The conversion seat 2 is provided with a tool withdrawal groove 21, and a second end surface 22 of the conversion seat 2 is provided with a chamfer structure.
Specifically, the conversion seat 2 is made of 1Cr17Ni 2.
Specifically, the oil passage of the conversion seat 2 is a hole with phi 5 mm.
Specifically, the first end face of the large end of the conversion seat 2 is connected with the conversion shell 3 through welding.
Specifically, the relief groove 21 of the conversion seat 2 is a groove having a width of 1mm and a diameter of 11.6 mm.
Specifically, the angle between the chamfer of the second end face of the conversion seat 2 and the central shaft of the conversion seat 2 is 15 degrees, and the installation of the plug-in type conversion valve after welding has a good guiding effect.
Specifically, guard circle I4 is the annular seal structure of U-shaped for the cross section, and sealing washer I5 is the ring packing, and sealing washer I5 sets up in the U-shaped inslot of protecting ring I4.
Specifically, the diameter of the oil through hole of the conversion housing 3 is 6 mm; the first slot 31 of the conversion housing 3 has a width of 7mm and a diameter of 12 mm; the second groove 32 of the conversion housing 3 has a diameter of 14 mm; the width was 3.4 mm.
Specifically, the conversion valve core 1 is made of martensitic stainless steel 4Cr 13.
Specifically, the total axial length of the conversion valve core 1 is 14mm, and the diameter of the valve core of the conversion valve core 1 is in clearance fit with the inner diameter of the conversion shell 3.
Specifically, the angles between the chamfers arranged at the two ends of the conversion valve core 1 and the central axis of the conversion valve core 1 are 20 degrees, and the lengths of the chamfers are 1.8 mm.
The protection ring II 6; a sealing ring II 7 is assembled and arranged in a groove with the phi of 14mm of the conversion shell 3, and the other group of protection rings II 6 are arranged; and a sealing ring II 7 is assembled and arranged in the other groove of phi 14mm of the conversion shell 3.
And the sealing ring I5 and the protective ring I4 are arranged in the hole of the phi 12 of the conversion shell 3 and close to the phi 9 hole end after oil immersion, and the small end of the conversion seat 2 is arranged in the conversion shell 3.
The conversion valve core 1 is arranged in the conversion shell 3 from the other end of the conversion shell 3, and the other pair of oil-immersed sealing rings I5 are arranged in the same way; a protective ring I4 and a conversion seat 2. And (3) performing a sealing test by using a special tool, blocking the oil through holes of the two phi 6 on the conversion shell 3, inputting 21MPa pressure to any one conversion seat 2 end, keeping for 3min, and ensuring that the other conversion seat 2 port has no leakage. The other end should have no oil leakage in the same way.
After the test is qualified, the two annular contact surfaces of the conversion seat 2 and the conversion shell 3 are welded together in a laser welding mode to form a plug-in type conversion valve module.
The conversion valve core 1 is made of martensitic stainless steel 4Cr13 and has high strength and hardness. The axial length of the conversion valve core 1 is 14mm, and the diameter of the valve core of the conversion valve core 1 is in clearance fit with the inner diameter of the conversion shell 3. Two ends of the conversion valve core 1 are arranged to be chamfer structures, the angle between each chamfer and the central shaft of the conversion valve core 1 is 20 degrees, and the length of each chamfer is 1.8 mm. Therefore, the guide device has a good guide function on the movement of the conversion valve core.
The conversion seat 2 is made of 1Cr17Ni 2; an oil channel is arranged on the conversion seat 2 and is a hole with the diameter of phi 5 mm. The small end of the conversion seat 2 is fixedly provided with a protective ring I4 and a sealing ring I5. The first end surface 23 of the largest outer circle of the conversion seat 2 is welded with the conversion shell 3. The conversion seat 2 is provided with a tool withdrawal groove 21, and the tool withdrawal groove 21 is a groove with the width of 1mm and the diameter of 11.6 mm. The second end face 22 of the largest outer circle of the conversion seat 2 is of a chamfer structure, the angle between the chamfer and the central shaft of the conversion seat 2 is 15 degrees, and the chamfer has a good guiding effect on installation of the plug-in type conversion valve after welding.
The material of the conversion seat made of 1Cr17Ni2 has good corrosion resistance and high mechanical property, and can be used for welding by various methods. The end face of the largest excircle of the conversion seat 2 is welded with the conversion shell 3, so that the plug-in type conversion valve is modularized and convenient to install; and (5) disassembling and maintaining. The relief groove 21 serves to prevent interference when the conversion seat is assembled with the conversion housing. The second end face of the largest excircle of the conversion seat 2 is arranged to be a chamfer structure and used for having a good guiding effect on installation of the plug-in type conversion valve after welding.
The conversion shell 3 is provided with two oil through holes with the diameter phi of 6mm, and the conversion shell 3 is provided with a first groove 31 and two second grooves 32; the width of the first groove 31 is 7mm, the diameter is 12mm, and the diameter of the second groove 32 is 14 mm; the width is 3.4mm, and second groove 32 is used for installing guard circle II 6 and sealing washer II 7 respectively.
It should be noted that the conversion housing 3 has a fixed conversion valve core; a protection ring I; the sealing ring I and the conversion seat. The first groove 31 is mainly used for reducing weight, and the second groove 32 is provided with a protective ring II and a sealing ring II to prevent oil leakage among different oil paths of the conversion valve.
The protection ring I4 is made of tetrafluoroethylene, and the sealing ring II 5 is made of nitrile rubber.
It should be noted that the protective ring I4 and the sealing ring I5 are special parts, and the sealing structure formed by the protective ring I4 and the sealing ring I5 ensures the internal sealing performance and the conversion pressure of the conversion valve. The inner diameter size and the thickness of the protective ring I4 are the key points for ensuring the tightness and the performance index of the conversion pressure. The inner diameter of the protective ring I4 is too small, so that the friction force between a sealing element consisting of the protective ring II 6 and the sealing ring II 7 and the conversion valve core 1 can be increased, and the conversion pressure value of the conversion valve is influenced; the sealing performance of the conversion valve is influenced by the too large inner diameter size of the protective ring I4. The thickness of the protective ring I4 is too small, so that damage is easily caused in work; the thickness dimension is too large, and the sealing effect cannot be achieved after the sealing ring is combined.
It should be noted that the protective ring ii 6 is a special part, and the sealing ring ii 7 is a standard part. And the protective ring II and the sealing ring II arranged on the conversion shell mainly have the function of preventing oil leakage between different oil paths outside the conversion valve.
In summary, the application provides a plug-in type conversion valve for an aircraft hydraulic brake system, which realizes product miniaturization; the modularized and integratable functions, the plug-in integrated structure design is more convenient for the installation of the product; and (4) disassembling and rapidly positioning faults.
Claims (9)
1. The utility model provides a cartridge formula conversion valve that aircraft hydraulic braking system used, its characterized in that, cartridge formula conversion valve installs in the brake integrated valve, and cartridge formula conversion valve includes conversion valve core (1), conversion seat (2), conversion casing (3), guard circle I (4), sealing washer I (5), wherein:
the conversion shell (3) is of a hollow tubular rotating body structure, a first groove (31) is formed in the outer side of the middle pipe wall of the conversion shell (3) along the circumferential direction, second grooves (32) are formed in the outer sides of the pipe walls at two ends of the conversion shell (3) along the circumferential direction respectively, and the second grooves (32) are symmetrically distributed on two sides of the first groove (31); two oil through holes are symmetrically arranged at the position of a first groove (31) of the conversion shell (3); the second groove (32) is used for installing a protective ring and a sealing ring respectively;
the conversion valve core (1) is of a cylindrical structure, two ends of the conversion valve core (1) are arranged to be chamfer structures, and the conversion valve core (1) is arranged in the inner cavity of the conversion shell (3) so as to move in the inner cavity of the conversion shell (3);
the conversion seat (2) is a hollow rotating body, the two conversion seats (2) are respectively arranged in two ends of the conversion shell (3), the outer diameter of the small end of each conversion seat (2) is equal to the inner diameter of the two ends of the conversion shell (3), and the aperture of the second end surface (22) of each conversion seat (2) is smaller than the diameter of the end surface of the conversion valve core (1); an oil passage is formed between the conversion seat (2) and the inner cavity of the conversion shell (3), and a protection ring I (4) and a sealing ring I (5) are fixedly arranged in a cavity between the small end of the conversion seat (2) and the conversion shell (3); the conversion seat (2) is provided with a tool withdrawal groove (21), and the second end surface (22) of the conversion seat (2) is of a chamfer structure.
2. A plug-in type conversion valve according to claim 1, characterized in that the oil passage of the conversion seat (2) is a hole of phi 5 mm.
3. A plug-in conversion valve according to claim 1, characterized in that the diameter of the conversion valve core (1) is in clearance fit with the inner diameter of the conversion housing (3).
4. Plug-in conversion shutter according to claim 1, characterised in that the diameter of the oil passage of the conversion housing (3) is 6 mm;
the width of the first groove (31) of the conversion shell (3) is 7mm, and the diameter of the first groove is 12 mm;
the second groove (32) of the conversion housing (3) has a diameter of 14mm and a width of 3.4 mm.
5. The plug-in type conversion valve according to claim 1, wherein the protective ring I (4) is an annular sealing structure with a U-shaped cross section, the sealing ring I (5) is an annular sealing ring, and the sealing ring I (5) is arranged in a U-shaped groove of the protective ring I (4).
6. The cartridge type switching valve according to claim 1, wherein the chamfer provided at both ends of the switching valve core (1) has an angle of 20 ° with the central axis of the switching valve core (1), and the length of the chamfer is 1.8 mm.
7. Cartridge conversion shutter according to claim 1,
the tool withdrawal groove 21 of the conversion seat (2) is a groove with the width of 1mm and the diameter of 11.6 mm;
the total axial length of the conversion valve core (1) is 14 mm.
8. The cartridge type switching valve according to claim 1, characterized in that the switching valve core (1) is made of martensitic stainless steel 4Cr 13;
the conversion seat (2) is made of 1Cr17Ni 2.
9. A plug-in conversion shutter according to claim 1, characterized in that the chamfer of the large end of the conversion seat (2) is at an angle of 15 ° to the central axis of the conversion seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220724983.3U CN217455949U (en) | 2022-03-31 | 2022-03-31 | Plug-in type conversion valve for hydraulic brake system of airplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220724983.3U CN217455949U (en) | 2022-03-31 | 2022-03-31 | Plug-in type conversion valve for hydraulic brake system of airplane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217455949U true CN217455949U (en) | 2022-09-20 |
Family
ID=83267365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220724983.3U Active CN217455949U (en) | 2022-03-31 | 2022-03-31 | Plug-in type conversion valve for hydraulic brake system of airplane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217455949U (en) |
-
2022
- 2022-03-31 CN CN202220724983.3U patent/CN217455949U/en active Active
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