CN217177751U - Metal braided hose for gas - Google Patents
Metal braided hose for gas Download PDFInfo
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- CN217177751U CN217177751U CN202220281141.5U CN202220281141U CN217177751U CN 217177751 U CN217177751 U CN 217177751U CN 202220281141 U CN202220281141 U CN 202220281141U CN 217177751 U CN217177751 U CN 217177751U
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Abstract
The application discloses hose is woven to metal for gas includes: the device comprises a first connecting port, a second connecting port and a pipe body; the body includes: the inner pipe, the stainless steel wire braid layer and the outer cladding pipe layer; one end of the pipe body is fixedly connected with the first connector, and the other end of the pipe body is fixedly connected with the second connector. By adopting the technical scheme provided by the application, the problems that the hose is easy to break, the flexibility is poor and the inner pipe material loses flexibility and becomes hard and brittle after being soaked in n-pentane liquid in the current market can be solved, safety accidents caused by the gas connection hose are effectively prevented and improved, the family property and personal safety of a gas user are guaranteed, the upgrading and updating of the related technical standards of the hose are promoted, and the healthy development of the gas industry is promoted.
Description
Technical Field
The application relates to the technical field of hoses for gas. In particular to a metal braided hose for fuel gas.
Background
Safety accidents in the field of domestic liquefied petroleum gas and pipeline natural gas application frequently occur, wherein accidents caused by connecting hoses account for a large proportion. The safety accident mainly comprises a safety accident caused by the aging crack leakage of the hose, a safety accident caused by the rat bite of the hose, a safety accident caused by the breakage or the disconnection of the hose itself caused by the high pressure entering the hose due to the failure of the preposed pressure regulator, a suicide accident caused by the manual cutting of the hose, an accident caused by the large amount of air leakage caused by the pulling and the loosening of the connecting joint and the like. Therefore, the problems of easy breakage and poor flexibility of the hose at present need to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The application provides a metal braided hose for fuel gas, which can be used for wrapping an inner pipe, a stainless steel wire braided layer and an outer cladding pipe layer by layer; and the interface adopts a passivated zigzag structure, so that the problems of easy breakage and poor flexibility of the gas hose are solved.
The utility model provides a hose is woven to metal for gas, include: first connector, second connector and body.
The body includes: the inner pipe, the stainless steel wire braid layer and the outer cladding pipe layer; one end of the pipe body is fixedly connected with the first connector, and the other end of the pipe body is fixedly connected with the second connector.
As an alternative implementation example, the first connection port is an a-type connection port or a B-type connection port; the second connecting port is an A-type connecting port or a B-type connecting port.
As an alternative implementation example, the a-type connection interface includes: a tube core A, a nut A and a pressing sleeve.
The tube core a is connected to the tube body through the pressing sleeve.
The contact part of the tube core A and the inner tube is in a blunted sawtooth shape along the axial cutting section.
As an alternative implementation example, the B-type connection interface includes: a tube core B, a nut B and a pressing sleeve.
The tube core B is connected to the tube body through the pressing sleeve.
The contact part of the tube core B and the inner tube is in a passivated sawtooth shape along the axial cutting section.
As an alternative implementation example, the pressing sleeve is made of metal.
As an alternative implementation example, the inner tube, the stainless steel wire braid layer and the outer cladding tube layer are wrapped layer by layer from inside to outside.
It should be noted that the weave aperture of the stainless steel wire braid is less than 1mm 2 。
As an alternative embodiment, the outer cladding tube layer comprises: the color filter comprises a main color area and an auxiliary color area, wherein the main color area is opaque, and the auxiliary color area is transparent with the width of 1-4 mm.
In one example, the primary color region and the secondary color region are stripe regions arranged at intervals.
As an alternative embodiment, the inner tube is made of a rubber material that meets the n-pentane resistance specification.
The tolerance performance indexes include: after the n-pentane liquid is soaked for 72 hours, the n-pentane liquid is taken out and dried for 24 hours, and the mass change rate and the volume change rate are not more than-10% to + 5%.
The tolerance performance index further includes: after being taken out and dried for 24 hours after being soaked in n-pentane liquid for 72 hours, the coating does not become hard and has no cracks and erosion dissolution on the surface.
Adopt the technical scheme that this application provided, the beneficial effect that can realize:
the technical problems that hoses are easy to break and poor in flexibility existing in the current market can be solved, safety accidents caused by gas connecting hoses are effectively prevented and improved, family property and personal safety of gas users are guaranteed, upgrading and updating of relevant technical standards of the hoses are promoted, and healthy development of the gas industry is promoted.
Drawings
Fig. 1 is a schematic view of the overall structure of a metal braided hose for gas;
fig. 2 is a schematic cross-sectional structure and a schematic perspective structure of a tube core a in a metal braided hose for gas use according to the present invention;
fig. 3 is a schematic cross-sectional structure and a schematic three-dimensional structure of a tube core B in the metal braided hose for gas provided by the present invention;
fig. 4 is a schematic cross-sectional structure and a schematic perspective structure of a seal ring B in a metal braided hose for gas use according to the present invention;
fig. 5 is a schematic diagram showing the comparison between the pressure sleeve of the metal braided hose for gas and the pressure sleeve before and after the riveting deformation.
Reference numerals: 1. a nut A; 2. a sealing ring A; 3. a tube core A; 4. pressing the sleeve; 5. an outer cladding tube layer; 6. a stainless steel wire braid layer; 7. an inner tube; 8. a tube core B; 9. a seal ring B; 10. a nut B; 11. a type A connection interface; 12. a pipe body; 13. a B-type connection interface; 14. a socket joint; 15. an externally threaded joint.
Detailed Description
The present invention will be described in further detail with reference to fig. 1 to 5.
The utility model provides a metal woven hose for gas can include: a first connection port, a second connection port, and a tube body 12.
The body includes: an inner tube 7, a stainless steel wire braid layer 6 and an outer cladding tube layer 5; one end of the tube body 12 is fixedly connected with the first connector, and the other end of the tube body 12 is fixedly connected with the second connector.
As an alternative implementation example, the first connection port is an a-type connection port 11 or a B-type connection port 13; the second connection port is an A-type connection port 11 or a B-type connection port 13.
As an example, the metal woven hose may be composed of the a-type connection port 11, the tube 12, and the B-type connection port 13, or the a-type connection port 11, the tube 12, and the a-type connection port 11, or the B-type connection port 13, the tube 12, and the B-type connection port 13, according to the type of the connection port to which the user terminal is connected.
Referring to fig. 1, the metal braided hose is exemplified by an a-type connection port 11, a tube 12, and a B-type connection port 13.
As an alternative implementation example, the type a connection interface 11 may include: a core A3, a nut a1, and a press sleeve 4.
The tube core a3 is connected to the tube body 12 by the press sleeve 4.
Note that the portion of the tube core a3 in contact with the inner tube 7 has a blunted sawtooth shape in an axially cut section. The tube core A3 is convenient to be arranged in the inner tube 7, is inconvenient to be pulled out and separated, does not cause sharp damage to the inner tube 7, and is beneficial to improving the tensile separation strength of the connection interface part, thereby improving the reliability of the whole braided hose.
The a-type connection port 11 further includes a seal ring a 2; the outer edge of the end head at one side of the assembly of the tube core A3 and the sealing ring A2 comprises a raised outer circle step and a chamfer, so that the sealing ring A2 can be smoothly installed without falling off, and the safety accident caused by air leakage after installation due to the loss of the sealing ring can be prevented.
As an example, the tube core A3 has a blunt serrated root with a pillow-end face that facilitates axial compression of the sleeve 4 along the tube without retarding rotation of the nut a1 when the sleeve 4 is swaged, preventing difficult installation and hose damage from twisting the tube body.
As an alternative implementation example, the B-type connection interface 13 may include: a tube core B8, a nut B10 and a pressing sleeve 4.
The tube core B8 is connected to the tube body 12 by the press sleeve 4.
As an example, the pressing sleeve 4 is permanently deformed by a hydraulic riveting process to connect the a-type connecting port 11 or the B-type connecting port 13 and the pipe body 12 together; the A-type connecting port 11 can be matched and connected with the external thread joint 15 at the upstream or the downstream of the hose and realize end surface sealing; the B-shaped connector 13 can be mated with the socket 14 at the upstream or downstream of the hose and sealed circumferentially to complete the installation and gas-tight installation of the hose on the gas pipeline.
As an example, referring to FIG. 3, the end of core B8 remote from the blunted saw tooth shape has a large chamfer at its juncture with the o-ring to facilitate deformation of o-ring B9 along the chamfer to reduce the internal bore size and grip the female connector 14 inserted into the internal bore during hose installation when nut B10 is screwed in.
As an example, nut B10 has an internal bore thread root with a stepped portion having a transition ramp to facilitate deformation of seal B9 along the ramp to reduce the internal bore size and grip the female fitting 14 inserted into the internal bore when the hose is installed or in use as nut B10 is threaded.
As an example, referring to FIG. 4, the outer circle of the sealing ring B9 has two large chamfers which are matched with the chamfers of the inner hole of the end head of the tube core B8 at the end far away from the blunted sawtooth shape structurally, and the structure is also matched with the transition inclined plane at the step position of the thread root of the inner hole of the nut B10, when the nut B10 is screwed in, the sealing ring B9 deforms along the inclined plane to generate extrusion deformation to reduce the inner diameter, and the female joint 14 inserted in the inner hole is gripped to realize reliable installation connection and circumferential sealing of the hose.
The contact part of the tube core B and the inner tube is in a passivated sawtooth shape along the axial sectioning section; the tube core B8 is convenient to be arranged in the inner tube 7, is inconvenient to be pulled out and separated, does not cause sharp damage to the inner tube 7, and is beneficial to improving the tensile separation strength of the connection interface part, thereby improving the reliability of the whole braided hose.
As an alternative implementation example, the pressing sleeve is made of metal.
As an alternative implementation example, the inner tube, the stainless steel wire braid layer and the outer cladding tube layer are wrapped layer by layer from inside to outside.
As an example, the inner tube 7, the stainless steel wire braid layer 6 and the outer clad tube layer 5 are formed layer by special equipment and tightly wrapped in sequence without play between layers.
It should be noted that the weave aperture of the stainless steel wire braid is less than 1mm 2 。
By adopting the scheme, the function of preventing the hose from being damaged by artificial cutting or rat biting can be realized, the inner layer pipe can be protected from being exposed, the service life of the inner pipe is prolonged, the reliability of the inner pipe is further improved, the tensile strength of the hose is enhanced, and the hose is more durable.
As an alternative example of implementation,
as an alternative embodiment, the outer cladding tube layer comprises: the color filter comprises a main color area and an auxiliary color area, wherein the main color area is opaque, and the auxiliary color area is transparent with the width of 1-4 mm.
In one example, the primary color region and the secondary color region are stripe regions arranged at intervals.
The stainless steel wire braid 6 can be seen through the transparent tape to increase the use confidence of the user side.
As an alternative embodiment, the inner tube is made of a rubber material that meets the n-pentane resistance specification.
The tolerance performance indexes include: after the n-pentane liquid is soaked for 72 hours, the n-pentane liquid is taken out and dried for 24 hours, and the mass change rate and the volume change rate do not exceed-10% to + 5%.
The tolerance performance index includes: after being taken out and dried for 24 hours after being soaked in n-pentane liquid for 72 hours, the coating does not become hard and has no cracks and erosion dissolution on the surface
In one example, the inner tube is a rubber material. The rubber material is soaked in n-pentane liquid at 20 +/-5 ℃ for 72h, and the mass change rate and the volume change rate do not exceed +/-20% within 5min after being taken out. After being placed in dry air for 24 hours, the mass change rate and the volume change rate are not more than-10% to + 5%, and the phenomena of hardening, embrittlement, cracking and appearance erosion dissolution are avoided. The material of the inner pipe 7 ensures the long-term service life and reliability of the hose.
Adopt the technical scheme that this application provided, the beneficial effect that can realize includes:
the technical problems that hoses are easy to break, poor in flexibility, rubber materials are not resistant to gas dissolution and connection joints are not firm in the existing market can be solved, safety accidents caused by gas connection hoses are effectively prevented and improved, family property and personal safety of gas users are guaranteed, upgrading of relevant technical standards of the hoses is promoted, and healthy development of the gas industry is promoted.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent laws within the scope of the present application.
Claims (11)
1. A metal braided hose for gas use, said hose comprising: a first connection port, a second connection port and a pipe body (12);
the pipe body (12) includes: an inner tube (7), a stainless steel wire woven layer (6) and an outer cladding tube layer (5); one end of the pipe body (12) is fixedly connected with the first connecting port, and the other end of the pipe body (12) is fixedly connected with the second connecting port.
2. A hose according to claim 1, characterised in that said first connection is an a-connection (11) or a B-connection (13); the second connecting port is an A-type connecting port (11) or a B-type connecting port (13).
3. Hose according to claim 2, characterized in that said connection interface of type a (11) comprises: the pipe core A (3), the nut A (1) and the pressing sleeve (4); the tube core A (3) is connected with the tube body (12) through the pressing sleeve (4); the contact part of the tube core A (3) and the inner tube (7) is in a passivated sawtooth shape along the axial sectioning section.
4. A hose according to claim 2 or 3, characterized in that said B-type connection interface (13) comprises: a tube core B (8), a nut B (10) and a pressing sleeve (4);
the tube core B (8) is connected with the tube body (12) through the pressing sleeve (4);
the contact part of the tube core B (8) and the inner tube (7) is in a passivated sawtooth shape along the axial sectioning section.
5. A hose according to claim 3, characterized in that said pressing sleeve (4) is of metal.
6. A hose according to claim 4, characterized in that said pressing sleeve (4) is of metal.
7. The hose according to claim 1, characterized in that said inner tube (7), said stainless steel wire braid (6) and said outer cladding tube layer (5) are wrapped layer by layer from inside to outside; the weaving pore of the stainless steel wire weaving layer (6) is less than 1mm 2 。
8. Hose according to claim 1, characterized in that the outer cladding tube layer (5) is partly colored transparent.
9. Hose according to claim 1, characterized in that said inner tube (7) is made of a rubber material that meets the n-pentane resistance specification.
10. The hose of claim 9, wherein the tolerance performance indicators comprise: the mass change rate and the volume change rate do not exceed-10% to + 5% after the n-pentane liquid is taken out and dried for 24 hours after being soaked for 72 hours.
11. The hose of claim 9 or 10, wherein the tolerance performance indicators further comprise: after being taken out and dried for 24 hours after being soaked in n-pentane liquid for 72 hours, the coating does not become hard and has no cracks and erosion dissolution on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220281141.5U CN217177751U (en) | 2022-02-11 | 2022-02-11 | Metal braided hose for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220281141.5U CN217177751U (en) | 2022-02-11 | 2022-02-11 | Metal braided hose for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217177751U true CN217177751U (en) | 2022-08-12 |
Family
ID=82739990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220281141.5U Active CN217177751U (en) | 2022-02-11 | 2022-02-11 | Metal braided hose for gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217177751U (en) |
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2022
- 2022-02-11 CN CN202220281141.5U patent/CN217177751U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230711 Address after: Poverty Alleviation Industrial Park, Hejia Town, Yunxi County, Shiyan City, Hubei Province Patentee after: Hubei Aowei Industry Co.,Ltd. Address before: No. 8 Shangchen Village, Qinling Street Office, Lintong District, Xi'an City, Shaanxi Province 710600 Patentee before: Xi'an dongxuda Industrial Co.,Ltd. |