CN213177213U - Hard seal corrugated pipe structure - Google Patents

Hard seal corrugated pipe structure Download PDF

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Publication number
CN213177213U
CN213177213U CN202021359002.7U CN202021359002U CN213177213U CN 213177213 U CN213177213 U CN 213177213U CN 202021359002 U CN202021359002 U CN 202021359002U CN 213177213 U CN213177213 U CN 213177213U
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CN
China
Prior art keywords
corrugated pipe
conical
matched
pipe
central
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Active
Application number
CN202021359002.7U
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Chinese (zh)
Inventor
谷建伟
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Zhejiang Zhenlong Energy Equipment Technology Co ltd
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Zhejiang Zhenlong Energy Equipment Technology Co ltd
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Priority to CN202021359002.7U priority Critical patent/CN213177213U/en
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Publication of CN213177213U publication Critical patent/CN213177213U/en
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Abstract

A hard seal corrugated pipe structure belongs to the technical field of corrugated pipes and comprises a corrugated pipe, a nut and a matched joint, wherein the corrugated pipe comprises a corrugated pipe main body and a straight pipe section on one side; the right end of the straight pipe section of the corrugated pipe is provided with a conical flaring, and the central section angle of the conical flaring is 40-50 degrees; the left end of the nut is provided with an annular retaining shoulder, the corrugated pipe main body is arranged at the left side of the annular retaining shoulder, the corrugated pipe is arranged in the annular retaining shoulder in a penetrating mode, the conical flaring of the straight pipe section of the corrugated pipe is arranged at the right side of the annular retaining shoulder, and the corrugated pipe is clamped with the annular retaining shoulder through the conical flaring; the left end of the matched joint is provided with an external thread A, the right end of the matched joint is provided with an external thread B, and the matched joint is in threaded fastening connection with the nut through the external thread A; the outer side of the left end of the matched joint is a conical surface, and an annular end surface is arranged between the conical surface of the left end of the matched joint and the central hole; the central section angle of one side of the conical surface of the matched joint is the same as the central section angle of the conical flaring of the straight pipe section of the corrugated pipe; the utility model has the advantages that: no gasket is used, and the sealing performance is better.

Description

Hard seal corrugated pipe structure
Technical Field
The utility model relates to a bellows structure, in particular to bellows structure sealed firmly belongs to bellows technical field.
Background
The corrugated pipe is a special pipeline for conveying combustible gas, is a metal hose for replacing a traditional rubber hose, and can overcome the defects that the rubber hose is easy to fall off and age and has short service life.
The mode of customization bellows joint seal generally is the packing ring seal in the existing market, and the packing ring is because the ageing problem of self, and sealing performance can worsen, leads to gas leakage, influences the use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at among the above-mentioned prior art, packing ring sealing performance can the variation, leads to the defect of gas leakage, provides a bellows structure sealed firmly, can reach the purpose without packing ring, sealing performance is good.
In order to realize the purpose, the utility model adopts the technical scheme that: a hard seal corrugated pipe structure comprises a corrugated pipe, a nut and a matched joint, wherein the corrugated pipe comprises a corrugated pipe main body and a straight pipe section on one side, a conical flaring is arranged at the right end of the straight pipe section of the corrugated pipe, and the central section angle of the conical flaring is 40-50; the left end of the nut is provided with an annular retaining shoulder, the corrugated pipe main body is arranged on the left side of the annular retaining shoulder, the corrugated pipe penetrates through the annular retaining shoulder, the conical flaring of the straight pipe section of the corrugated pipe is arranged on the right side of the annular retaining shoulder, and the corrugated pipe is clamped with the annular retaining shoulder through the conical flaring; the left end of the matched joint is provided with an external thread A, the right end of the matched joint is provided with an external thread B, and the matched joint is in threaded fastening connection with a nut through the external thread A;
the outer side of the left end of the matched connector is a conical surface, an annular end surface is arranged between the conical surface of the left end of the matched connector and the central hole, and the outer diameter of the annular end surface is the same as the diameter of the straight pipe section of the corrugated pipe; the central section angle of one side of the conical surface of the matched joint is the same as the central section angle of the conical flaring of the straight pipe section of the corrugated pipe;
and a sealing gasket is not arranged between the corrugated pipe and the matched joint in the nut, when the matched joint is in threaded fastening connection with the nut, the conical flaring of the straight pipe section of the corrugated pipe is in close fit sealing connection with the conical surface at the left end of the matched joint, and a hard sealing structure is formed between the corrugated pipe and the matched joint.
The installation process comprises the following steps: the corrugated pipe is firstly subjected to flat head and flaring, then is connected with the nut, and then the matched joint is connected with the nut through threads and is screwed tightly.
The central section angle of the conical flaring of the straight pipe section of the corrugated pipe and the central section angle of one side of the conical surface at the left end of the matched joint are both 45 degrees.
The external thread B at the right end of the mating connector is used for connecting other connectors.
Compared with the prior art, the beneficial effects of the utility model are that: after the corrugated pipe is connected with the nut, the matched joint is screwed, and the angle of the conical surface on the outer side of the end face of the matched joint is matched with the end face of the corrugated pipe, so that the sealing effect can be achieved after the corrugated pipe is screwed down. The hard seal corrugated pipe structure is in direct contact seal with a matched connector through the corrugated pipe, gasket seal is abandoned, and the problem of connector leakage caused by the aging problem of the gasket is solved.
Drawings
FIG. 1 is a schematic diagram of: the utility model discloses an exploded view;
FIG. 2 is a diagram of: a left view of the mating connector;
FIG. 3 is a diagram of: a front view of the bellows;
FIG. 4 is a diagram of: the utility model discloses a front view cross section;
FIG. 5 is a diagram of: fig. 4 is an enlarged view of a portion a.
Description of reference numerals: the corrugated pipe comprises a corrugated pipe 1, a corrugated pipe body 101, a straight pipe section 102, a conical flaring 103, a nut 2, an annular retaining shoulder 201, a matching joint 3, an annular end face 301, a conical face 302, external threads A4 and external threads B5.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the present invention.
As shown in fig. 1 to 5, a hard seal corrugated pipe 1 structure comprises a corrugated pipe 1, a nut 2 and a mating connector 3, wherein the corrugated pipe 1 comprises a corrugated pipe body 101 and a straight pipe section 102 on one side, a tapered flaring 103 is arranged at the right end of the straight pipe section 102 of the corrugated pipe 1, and the central section angle α of the tapered flaring 103 is 45 degrees; the left end of the nut 2 is provided with an annular retaining shoulder 201, the corrugated pipe main body 101 is arranged on the left of the annular retaining shoulder 201, the corrugated pipe 1 is arranged in the annular retaining shoulder 201 in a penetrating manner, the conical flaring 103 of the straight pipe section 102 of the corrugated pipe 1 is arranged on the right of the annular retaining shoulder 201, and the corrugated pipe 1 is clamped with the annular retaining shoulder 201 through the conical flaring 103; the left end of the matched joint 3 is provided with an external thread A4, the right end of the matched joint 3 is provided with an external thread B5, and the matched joint 3 is in threaded fastening connection with the nut 2 through the external thread A4;
the outer side of the left end of the matched joint 3 is a conical surface 302, an annular end surface 301 is arranged between the conical surface 302 and the central hole of the left end of the matched joint 3, and the outer diameter phi of the annular end surface 301 is the same as the diameter of the straight pipe section 102 of the corrugated pipe 1; the central section angle beta of one side of the conical surface 302 of the matching joint 3 is the same as the central section angle alpha of the conical flaring 103 of the straight pipe section 102 of the corrugated pipe 1;
and no sealing washer is arranged between the corrugated pipe 1 and the matched joint 3 in the nut 2, when the matched joint 3 is in threaded fastening connection with the nut 2, the conical flared opening 103 of the straight pipe section 102 of the corrugated pipe 1 is in tight fit and sealing connection with the conical surface 302 at the left end of the matched joint 3, and a hard sealing structure is formed between the corrugated pipe 1 and the matched joint 3.
The installation process comprises the following steps: the corrugated pipe 1 is firstly subjected to flat head and flaring, then is connected with the nut 2, and then the matched joint 3 is connected with the nut 2 in a threaded manner and is screwed down.
The external thread B5 at the right end of the mating connector 3 is used for connecting other connectors.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the ordinary changes and replacements within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims (3)

1. The utility model provides a hard seal bellows structure, includes bellows, nut and supporting joint, the bellows includes bellows main part and one side straight tube section, its characterized in that: a conical flaring is arranged at the right end of the straight pipe section of the corrugated pipe, and the central section angle of the conical flaring is 40-50 degrees; the left end of the nut is provided with an annular retaining shoulder, the corrugated pipe main body is arranged on the left side of the annular retaining shoulder, the corrugated pipe penetrates through the annular retaining shoulder, the conical flaring of the straight pipe section of the corrugated pipe is arranged on the right side of the annular retaining shoulder, and the corrugated pipe is clamped with the annular retaining shoulder through the conical flaring; the left end of the matched joint is provided with an external thread A, the right end of the matched joint is provided with an external thread B, and the matched joint is in threaded fastening connection with a nut through the external thread A;
the outer side of the left end of the matched connector is a conical surface, an annular end surface is arranged between the conical surface of the left end of the matched connector and the central hole, and the outer diameter of the annular end surface is the same as the diameter of the straight pipe section of the corrugated pipe; the central section angle of one side of the conical surface of the matched joint is the same as the central section angle of the conical flaring of the straight pipe section of the corrugated pipe;
when the matched connector is in threaded fastening connection with the nut, the conical flaring of the straight pipe section of the corrugated pipe is in close fit and sealing connection with the conical surface at the left end of the matched connector.
2. A hard-seal bellows structure according to claim 1, wherein: the central section angle of the conical flaring of the straight pipe section of the corrugated pipe and the central section angle of one side of the conical surface at the left end of the matched joint are both 45 degrees.
3. A hard-seal bellows structure according to claim 1, wherein: the external thread B at the right end of the mating connector is used for connecting other connectors.
CN202021359002.7U 2020-07-12 2020-07-12 Hard seal corrugated pipe structure Active CN213177213U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021359002.7U CN213177213U (en) 2020-07-12 2020-07-12 Hard seal corrugated pipe structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021359002.7U CN213177213U (en) 2020-07-12 2020-07-12 Hard seal corrugated pipe structure

Publications (1)

Publication Number Publication Date
CN213177213U true CN213177213U (en) 2021-05-11

Family

ID=75792953

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021359002.7U Active CN213177213U (en) 2020-07-12 2020-07-12 Hard seal corrugated pipe structure

Country Status (1)

Country Link
CN (1) CN213177213U (en)

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