CN114811210A - Coating layer structure of corrugated hose for gas and mounting method thereof - Google Patents
Coating layer structure of corrugated hose for gas and mounting method thereof Download PDFInfo
- Publication number
- CN114811210A CN114811210A CN202111662802.5A CN202111662802A CN114811210A CN 114811210 A CN114811210 A CN 114811210A CN 202111662802 A CN202111662802 A CN 202111662802A CN 114811210 A CN114811210 A CN 114811210A
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- Prior art keywords
- sleeve
- outward
- turning
- curled
- metal
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Classifications
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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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
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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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
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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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/26—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses specially adapted for hoses of metal
Abstract
The invention relates to a metal hose coated sleeve mounting structure and a mounting method thereof, the structure comprises a metal hose and a coated sleeve, the coated sleeve is sleeved outside the metal hose and fixed with metal joints at two ends of the metal hose, the metal joints at the two ends are circumferentially provided with annular grooves, two ends of the coated sleeve form outward-turning curled parts, the outward-turning curled parts are wound into an annular shape, the outward-turning curled parts are respectively matched with the annular grooves of the metal joints at the two ends of the metal hose, the metal joints are externally sleeved with clamping rings respectively to clamp the outward-turning curled parts in the annular grooves, and the clamping rings are compressed by radial external force to be limited in the annular grooves and compress the outward-turning curled parts, so that the two ends of the coated sleeve are fixed with the corresponding metal joints. Above-mentioned structure utilizes to cover the annular curling portion of turning up of cover tip self curl shape, and rethread snap ring compresses tightly spacingly, and not only connect conveniently, comparatively firm, and even the snap ring is not hard up slightly, because of the curling portion of turning up has the power that rises of curling, so difficult pine takes off, guarantees the reliability of connecting.
Description
Technical Field
The invention relates to the field of pipe fittings, in particular to a gas corrugated hose coating layer structure and an installation method thereof.
Background
Metal hoses are a common type of pipe and are used in a wide variety of applications, such as in the field of gas pipes, and common types of metal hoses, such as corrugated metal hoses, are commonly used for gas delivery. The corrugated metal hose mainly comprises a metal connector, a corrugated pipe and a covering sleeve, wherein the metal connector is connected with two ends of the corrugated pipe, the covering sleeve is sleeved outside the corrugated pipe, two ends of the covering sleeve are fixed on the metal connector, and the corrugated pipe is effectively protected by the covering sleeve. In the prior art, a covering sleeve is usually in a net sleeve structure, and the connection between two ends of the covering sleeve and a metal joint is usually realized in a welding or clamping ring pressing mode, for example, an authorization notice CN204611125U published in Chinese patent literature, 2015, 9 and 2 days, a utility model is named as a metal hose, which discloses that one end of a metal net sleeve is fixed with the joint through welding; like the publication No. CN209354789U published in the Chinese patent document, the publication No. 2019, 9 and 6, the utility model is named as a metal hose, and discloses that a net sleeve is clamped between a first pressing ring and a second pressing ring and provides pressing force through a pressing sleeve, thereby realizing the fixation of the net sleeve. Although the connection and fixation of the net sleeves can be realized by the above modes, the connection is relatively complicated and inconvenient by welding, time and labor are wasted, the ring sleeves are slightly loosened by adopting a ring sleeve clamping mode, the net sleeve clamping can fail, and the reliability is still not high. For this reason, the structure or manner of fixing the existing metal hose by the sheath needs to be improved.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a covering layer structure of a corrugated hose for gas and an installation method thereof for the corrugated hose, so that the technical problems of complex operation, low efficiency, poor clamping and fixing reliability and easy abrasion of the existing similar covering sleeve installation structure or method are solved. The purpose is realized by the following technical scheme.
A coating layer structure of a corrugated hose for gas comprises a metal hose and a coating sleeve, wherein the coating sleeve is sleeved outside the metal hose, two ends of the coating sleeve are fixedly connected with metal joints at two ends of the metal hose, the structure is characterized in that the metal joints at the two ends of the metal hose are circumferentially provided with annular grooves, the two ends of the covering sleeve form outward-turning curled parts which are wound into an annular shape, the diameter of the annular section is not less than the depth of the annular groove, the outward-turning curled parts at the two ends of the coating sleeve are respectively matched with the annular grooves of the metal joints at the two ends of the metal hose, the outsides of the metal joints at the two ends of the metal hose are respectively sleeved with a snap ring for clamping the outward-turning curled parts in the annular grooves, and the snap ring is compressed and limited in the annular groove by radial external force and compresses the outward-turned curled part, namely, two ends of the coating sleeve are fixed with the corresponding metal joints. Through the structure, the end part of the covering sleeve is curled to form the annular outward-turning curled part, the outward-turning curled part is compressed and limited in the annular groove of the metal joint through the clamping ring, the connection is convenient and firm, and the outward-turning curled part has the curling expansion force even if the clamping ring is slightly loosened, so the outward-turning curled part is not easy to loosen and ensure the reliability of the connection.
The flexible rubber sleeve is sleeved in the front of the covered sleeve, the flexible rubber sleeve is partially exposed out of the end of the covered sleeve, and the exposed part of the flexible rubber sleeve is curled to drive the end of the covered sleeve to be curled to form the outward-turning curled part. Through the structure, the characteristic that the flexible rubber sleeve is easy to turn is relied on, so that when the flexible rubber sleeve is turned to be curled, the end part of the covering sleeve is easy to drive to form a curled outward turning edge, and the operation is more convenient and labor-saving. In addition, the flexible rubber sleeve is adopted, so that the covered sleeve is easy to protect and not easy to wear, and the service life is longer.
The flexible rubber sleeve has elasticity, namely when the flexible rubber sleeve drives the end part of the covered sleeve to curl to form an outward turning curled part, the outward turning curled part elastically shrinks and is clamped in the annular groove of the corresponding metal joint by utilizing the elasticity after curling. Through the structure, the flexible rubber sleeve has better tensioning effect, and the outward-turning curled parts at the two ends of the covering sleeve are further ensured to be elastically clamped in the annular groove, so that the covering sleeve is reliable and not easy to loosen.
The end part of the coated sleeve is in a thread shape, namely a thread end is formed at the end part of the coated sleeve. Through this structure, utilize the end of a thread to form along with flexible gum cover more easily and curl, it is more convenient to operate.
The flexible rubber rings are nested in the curled parts at the two ends of the covering sleeve, namely the flexible rubber rings are used as inner cores of the outward-turning curled parts at the end parts of the covering sleeve. With this structure, the reliability of the locking between the outward curled parts at both ends of the covering sheath and the annular groove of the metal joint can be improved.
The flexible rubber ring has elasticity, and the annular inner diameter of the flexible rubber ring in the initial state is smaller than or equal to the annular inner diameter of the metal joint annular groove. Through the structure, the elastic clamping of the end part outward-turning curled part of the coating sleeve in the annular groove of the metal joint can be realized, and the structure is reliable.
The hard ring or the hard sleeve is nested inside the curled parts at the two ends of the covering sleeve, namely the hard ring or the hard sleeve is used as an inner core of the curled part outside the end part of the covering sleeve. Through this structure, adopt stereoplasm ring or stereoplasm cover card comparatively firm simultaneously, life is longer.
The installation method of the coating layer structure of the corrugated hose for the gas comprises the following steps: the method comprises the steps of embedding parts of a flexible rubber sleeve into two ends of a covered sleeve, inserting a barrel into the flexible rubber sleeve and the covered sleeve, clamping the flexible rubber sleeve between the wall surface of the covered sleeve and the barrel through the barrel, enabling the end part of the flexible rubber sleeve to form annular curling by curling, driving the covered sleeve to form curling after curling until the flexible rubber sleeve drives the covered sleeve to curl together to form an outward-turning curled part, drawing out the barrel after the curling is finished, embedding the outward-turning curled part of the covered sleeve into an annular groove corresponding to a metal joint, and finally sleeving a snap ring outside the metal joint, clamping the outward-turning curled part into the annular groove by the snap ring, radially clamping the snap ring by an external clamping tool, enabling the snap ring to be contracted and clamped at the annular groove, and finishing the fixed connection of the covered sleeve and the metal joint.
The invention has simple integral structure, convenient installation of the covering sleeve, difficult loosening, difficult damage of the joint of the covering sleeve and the pipe joint, reliable and safe use, and is suitable for being used as the mounting structure of the covering sleeve of the existing metal hose or the improvement of the mounting structure of the same type.
Drawings
Fig. 1 is a schematic sectional view of an installation according to an embodiment of the present invention.
Fig. 2 is a schematic view of the completed installation of fig. 1.
Fig. 3 is a first installation state structure diagram of the second embodiment of the invention.
Fig. 4 is a second installation state structure diagram of the second embodiment of the invention.
Fig. 5 is a schematic structural diagram of a second installation state of the second embodiment of the invention.
Fig. 6 is a schematic view of a modified structure of a second covering sleeve according to an embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view of the third embodiment of the present invention, in which the A-section is framed.
Fig. 8 is an enlarged schematic view of a portion a of fig. 7.
The sequence numbers and names in the figure are: 1. the flexible metal pipe comprises a metal hose body 101, a metal joint 102, an annular groove 2, a covering sleeve 201, an outward-turning curled portion 202, a wire end 3, a snap ring 4, a flexible rubber sleeve 5 and a flexible rubber ring.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the coating structure of the corrugated gas hose according to the first embodiment includes a metal hose 1 and a coating sleeve 2, which is sleeved outside the metal hose, and both ends of the covering sleeve are fixedly connected with metal joints 101 at both ends of the metal hose, the metal joints at both ends of the metal hose are circumferentially provided with annular grooves 102, both ends of the covering sleeve form outward turning curled parts 201 which are wound into an annular shape, the diameter of the annular section is not less than the depth of the annular groove, the outward turning curled parts at the two ends of the coating sleeve are respectively matched with the annular grooves of the metal joints at the two ends of the metal hose, the outsides of the metal joints at the two ends of the metal hose are respectively sleeved with a snap ring 3 for clamping the outward turning curled parts in the annular groove, and the snap ring is compressed and limited in the annular groove by radial external force and compresses the outward-turned curled part, namely, two ends of the coating sleeve are fixed with the corresponding metal joints.
As shown in fig. 3-5, in the second embodiment, two ends of the covered sheath 2 are curled, the flexible rubber sheath 4 is sleeved inside the front sheath, and the flexible rubber sheath is partially exposed at the end of the covered sheath, and the exposed portion of the flexible rubber sheath is curled to drive the end of the covered sheath to be curled to form the outward turning curled portion 201. The flexible rubber sleeve can also be designed to have elasticity, that is, when the flexible rubber sleeve drives the end part of the covered sleeve to curl to form an outward-turning curled part, the outward-turning curled part elastically shrinks and is clamped in the annular groove 102 corresponding to the metal joint by utilizing the elasticity after curling. The specific operation process of the flexible rubber sleeve comprises the following steps: the method comprises the steps of embedding parts of a flexible rubber sleeve into two ends of a covered sleeve, inserting a barrel into the flexible rubber sleeve and the covered sleeve, clamping the flexible rubber sleeve between the wall surface of the covered sleeve and the barrel through the barrel, enabling the end part of the flexible rubber sleeve to form annular curling by curling the end part of the flexible rubber sleeve, driving the covered sleeve to form curling after curling until the flexible rubber sleeve drives the covered sleeve to curl together to form an outward-turning curled part, drawing out the barrel after the curling is finished, embedding the outward-turning curled part of the covered sleeve into an annular groove corresponding to a metal joint 101, finally sleeving a snap ring outside the metal joint, clamping the outward-turning curled part into the annular groove by the snap ring, radially clamping the snap ring by an external clamping tool, and enabling the snap ring to be contracted and clamped at the annular groove, so that the fixed connection of the covered sleeve and the metal joint is finished.
As shown in fig. 6, which is an improved structure of the covering sleeve in the second embodiment, the end of the covering sleeve 2 is in a thread shape, i.e. the end forms a thread end 202, which is more convenient when the thread end is curled along with the flexible rubber sleeve.
As shown in fig. 7 and 8, in the third embodiment, the flexible rubber ring 5 is nested inside the two ends of the sheath 2, i.e. the flexible rubber ring is used as an inner core of the outward-turning part at the end of the sheath. The flexible rubber ring has elasticity, and the annular inner diameter of the initial state is smaller than or equal to the annular inner diameter of the metal joint annular groove. With this structure, the same object as described above can be achieved.
In addition to the above structure, a hard ring or a hard sleeve may be nested inside the two curled ends of the covering sleeve, that is, the hard ring or the hard sleeve is used as an inner core of the outer curled portion 201 at the end of the covering sleeve.
The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Obvious modifications or alterations to the present invention in combination with the prior art knowledge will be apparent to those skilled in the art and fall within the scope of the appended claims.
Claims (8)
1. A gas corrugated hose coating layer structure comprises a metal hose (1) and a coating sleeve (2), wherein the coating sleeve is sleeved outside the metal hose, and two ends of the coating sleeve are fixedly connected with metal joints (101) at two ends of the metal hose, the gas corrugated hose coating layer structure is characterized in that the metal joints (101) at two ends of the metal hose (1) are circumferentially provided with annular grooves (102), two ends of the coating sleeve (2) form outward-turning curled parts (201), the outward-turning curled parts are wound into an annular shape, the diameter size of the section of the annular shape is not less than the groove depth of the annular groove, the outward-turning curled parts at two ends of the coating sleeve are respectively matched with the annular grooves of the metal joints at two ends of the metal hose, the metal joints at two ends of the metal hose are respectively sleeved with clamping rings (3) for clamping the outward-turning curled parts in the annular grooves, and the clamping rings are compressed by radial external force and limited in the annular grooves and compress the outward-turning curled parts, namely, two ends of the coating sleeve are fixed with the corresponding metal joints.
2. The coating structure of the corrugated hose for gas use according to claim 1, wherein the flexible rubber sleeve (4) is sleeved in front of the covering sleeve (2) by curling at both ends thereof, and the flexible rubber sleeve is partially exposed at the end of the covering sleeve, and the end of the covering sleeve is curled to form the outward curled portion (201) by curling the exposed portion of the flexible rubber sleeve.
3. The coating structure of the corrugated hose for gas use according to claim 2, wherein the flexible rubber sleeve (4) has elasticity, that is, when the flexible rubber sleeve drives the end of the coated sleeve (2) to curl to form the outward curled portion (201), the outward curled portion elastically shrinks and is clamped in the annular groove (102) of the corresponding metal joint (101) by the elasticity after curling.
4. The coating layer structure for a gas bellows according to claim 2, wherein the end of the jacket (2) is in a wire form, i.e., the end of the jacket forms a stub (202).
5. The coating structure of the corrugated gas hose according to claim 1, wherein the inner part of the two ends of the sheath (2) are curled and a flexible rubber ring (5) is nested, namely the flexible rubber ring is used as an inner core of the end outward-turning curled part (201) of the sheath.
6. The coating structure of a gas bellows according to claim 5, wherein said flexible rubber ring (5) has elasticity and an annular inner diameter in an initial state is equal to or less than an annular inner diameter of said annular groove (102) of said metal fitting (101).
7. The coating layer structure for the gas-fired bellows according to claim 1, wherein a hard ring or a hard sleeve is fitted inside the both ends of the sheath (2) which are curled, and the hard ring or the hard sleeve is used as an inner core of the outer curled portion (201) at the end of the sheath.
8. A method for installing the coating structure of the corrugated flexible pipe for gas as claimed in claim 2, characterized in that the flexible rubber sleeve (4) is partially inserted into the two ends of the coated sleeve (2), then the flexible rubber sleeve and the coated sleeve are inserted into the barrel, the flexible rubber sleeve is clamped between the wall surface of the coated sleeve and the barrel through the barrel, the end of the flexible rubber sleeve is curled to form a circular curl by curling the end of the flexible rubber sleeve, the coated sleeve is driven to form a curl after curling until the flexible rubber sleeve drives the coated sleeve to curl together to form the outward-turning curled portion (201), after the curling is completed, the barrel is drawn out, the outward-turning curled portion of the coated sleeve is inserted into the circular groove (102) of the corresponding metal joint (101), finally, the outward-turning curled portion is clamped in the circular groove through the metal joint jacket, and the snap ring is radially clamped through an external clamping tool to shrink and clamp the snap ring in the circular groove, thus completing the fixed connection between the coated sleeve and the metal joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662802.5A CN114811210A (en) | 2021-12-31 | 2021-12-31 | Coating layer structure of corrugated hose for gas and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662802.5A CN114811210A (en) | 2021-12-31 | 2021-12-31 | Coating layer structure of corrugated hose for gas and mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114811210A true CN114811210A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111662802.5A Pending CN114811210A (en) | 2021-12-31 | 2021-12-31 | Coating layer structure of corrugated hose for gas and mounting method thereof |
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| CN (1) | CN114811210A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2842130Y (en) * | 2005-11-01 | 2006-11-29 | 航天晨光股份有限公司 | Non-welding structure metal pipe |
| CN2937739Y (en) * | 2006-07-21 | 2007-08-22 | 泰州市博特机械制造有限公司 | Non-welding joint metal hose |
| CN204099760U (en) * | 2014-08-19 | 2015-01-14 | 航天晨光股份有限公司 | A kind of high pressure flexible metallic conduit |
| CN204239911U (en) * | 2014-10-18 | 2015-04-01 | 浙江鸿森机械有限公司 | Prevent the bellows that welding fluid leaks |
| CN106382423A (en) * | 2016-11-04 | 2017-02-08 | 兰州天亿石化设备维修技术有限公司 | High-pressure flexible hose |
| CN113048310A (en) * | 2019-12-29 | 2021-06-29 | 江苏恒丰波纹管有限公司 | Bending-resistant metal hose with joint protection device |
| CN213576028U (en) * | 2020-10-19 | 2021-06-29 | 北京市航天兴华波纹管制造有限公司 | Special metal hose for liquid hydrogen |
-
2021
- 2021-12-31 CN CN202111662802.5A patent/CN114811210A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2842130Y (en) * | 2005-11-01 | 2006-11-29 | 航天晨光股份有限公司 | Non-welding structure metal pipe |
| CN2937739Y (en) * | 2006-07-21 | 2007-08-22 | 泰州市博特机械制造有限公司 | Non-welding joint metal hose |
| CN204099760U (en) * | 2014-08-19 | 2015-01-14 | 航天晨光股份有限公司 | A kind of high pressure flexible metallic conduit |
| CN204239911U (en) * | 2014-10-18 | 2015-04-01 | 浙江鸿森机械有限公司 | Prevent the bellows that welding fluid leaks |
| CN106382423A (en) * | 2016-11-04 | 2017-02-08 | 兰州天亿石化设备维修技术有限公司 | High-pressure flexible hose |
| CN113048310A (en) * | 2019-12-29 | 2021-06-29 | 江苏恒丰波纹管有限公司 | Bending-resistant metal hose with joint protection device |
| CN213576028U (en) * | 2020-10-19 | 2021-06-29 | 北京市航天兴华波纹管制造有限公司 | Special metal hose for liquid hydrogen |
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