CN216976086U

CN216976086U - Gas is with safe type metal collapsible tube with sealed leak protection gas function

Info

Publication number: CN216976086U
Application number: CN202123079354.4U
Authority: CN
Inventors: 张国兵; 杨雪峰; 于海; 吴旗峰; 刘小军; 林建俊; 张阳
Original assignee: Jiangsu Daming Corrugated Pipe Co ltd
Current assignee: Jiangsu Daming Corrugated Pipe Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-15
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to a gas-combustion safe metal hose with sealing and gas leakage preventing functions, which comprises a metal corrugated pipe, an outer sleeve and a connector, wherein the end part of the metal corrugated pipe is provided with a flange, the end part of the flange is provided with a rubber sleeve, the outside of the rubber sleeve is provided with a first screw sleeve, the outside of the connector is provided with a plurality of first grooves, the end part of the outer sleeve is provided with a first boss, the outside of the outer sleeve is provided with a reinforcing cap, the inside of the reinforcing cap is provided with a second groove, the inside of the second groove is provided with a first sealing ring, the outside of the reinforcing cap is provided with a second screw sleeve, the connector is clamped and matched by the rubber sleeve and the first groove after the first screw sleeve and the second screw sleeve are connected, the reinforcing cap and the flange press the rubber sleeve to seal, the outer sleeve is matched with the first boss and the second groove to limit, the sealing performance of the first sealing ring is improved, the sealing performance between the first screw sleeve and the connector is improved by the second sealing ring, the sealing performance between the second screw sleeve and the reinforcing cap is improved by the third sealing ring, the detachable connection increases the sealing and gas leakage prevention functions, and is favorable for improving the use safety of gas.

Description

Gas is with safe type metal collapsible tube with sealed leak protection gas function

Technical Field

The utility model relates to a gas-fired safety metal hose with a sealing and gas leakage preventing function, and belongs to the technical field of metal hoses.

Background

The metal gas hose is a special combustible gas conveying pipeline which replaces a traditional buckle mode rubber hose and overcomes the defects that the rubber hose is easy to fall off, age and bite by insects, the service life is short and the like. The metal gas hose comprises a structure that a PVC flame-retardant sleeve is arranged outside the metal corrugated pipe, and has better thermal expansion and cold contraction resistance and the advantages of good flexibility, fatigue resistance, high pressure bearing, good temperature resistance, corrosion resistance and the like compared with an armor structure that a PVC or rubber plastic material pipe is adopted inside and outside a metal winding pipe. The corrugated metal hose bellows, the PVC jacket and the joint in the prior art are locked by buckles or the rubber jacket is compressed by nuts, so that the rubber jacket deforms to hoop the joint socket, the risks that the end parts of the corrugated metal hose and the jacket easily fall off and the gas leaks from the joint part exist, and the safety of gas conveying is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a gas-sealing and gas-leakage-preventing safe metal hose.

The utility model is realized by the following technical scheme:

a gas-fired safety metal hose with a sealing and gas leakage preventing function comprises a metal corrugated pipe, an outer sleeve arranged outside the metal corrugated pipe and connectors arranged at two ends of the metal corrugated pipe, wherein a flange is arranged at the end part of the metal corrugated pipe, a rubber sleeve matched with the outer wall of the connector is arranged at the end part of the flange, a first threaded sleeve matched with the outer wall of the connector is arranged outside the rubber sleeve, and a plurality of first grooves arranged at intervals are arranged outside the connector;

the end part of the outer sleeve is provided with a first boss, the outer part of the outer sleeve is provided with a reinforcing cap, the end part of the reinforcing cap is matched with the flange, the rubber sleeve and the first threaded sleeve, a second groove matched with the outer wall of the first boss is arranged in the reinforcing cap, a first sealing ring positioned among the reinforcing cap, the first boss, the flange and the metal corrugated pipe is arranged in the second groove, a second threaded sleeve in limit fit with the reinforcing cap is arranged outside the reinforcing cap, and matching threads are arranged between the inner wall of the second threaded sleeve and the outer wall of the first threaded sleeve;

the end part of the rubber sleeve is provided with a second boss matched with the outer wall of the flange, the end part of the reinforcing cap and the inner wall of the first screw sleeve, the end part of the first screw sleeve is provided with a third groove, a second sealing ring is arranged between the third groove and the connector, the outer wall of the reinforcing cap is provided with a third boss in limit fit with the second screw sleeve, and a third sealing ring with a trapezoidal section is arranged between the third boss and the second screw sleeve;

the connector tip extends to inside the corrugated metal pipe end, first recess outer wall cross-section is V-arrangement or arc structure.

The utility model has the beneficial effects that:

(1) the first screw sleeve and the second screw sleeve are oppositely screwed and connected through the matched threads of the inner wall of the second screw sleeve and the outer wall of the first screw sleeve, the rubber sleeve is matched with the first groove to clamp the connector, the reinforcing cap and the flange tightly press the end part of the rubber sleeve, the sealing area and the matching tightness are increased by the second boss, and the elastic deformation and the sealing reliability of the rubber sleeve are ensured;

(2) the overcoat is spacing through first boss and second recess cooperation and increases the leakproofness between rubber sleeve, corrugated metal pipe, the reinforcement cap with first sealing washer to the second sealing washer increases the leakproofness between first swivel nut and the connector, increases the leakproofness between second swivel nut and the reinforcement cap with the third sealing washer, demountable installation, high-speed joint, increased sealed leak protection gas function, be favorable to improving gas safety in utilization.

Drawings

FIG. 1 is a top perspective view of the present invention;

FIG. 2 is a bottom perspective view of the present invention;

FIG. 3 is a top partially cut away view of the present invention;

fig. 4 is a lower sectional view of the present invention.

In the figure: the corrugated pipe comprises a corrugated pipe 1, an outer sleeve 2, a connector 3, a flange 4, a rubber sleeve 5, a first thread insert 6, a first groove 7, a first boss 8, a reinforcing cap 9, a second groove 10, a first sealing ring 11, a second thread insert 12, a matching thread 13, a chamfer wall 14, a second boss 15, a third groove 16, a second sealing ring 17, a third boss 18, a third sealing ring 19, an internal thread 20, a fourth sealing ring 21, an external thread 22 and a fifth sealing ring 23.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

A gas safety type metal hose with a sealing and gas leakage preventing function comprises a metal corrugated pipe 1, an outer sleeve 2 arranged outside the metal corrugated pipe 1 and connectors 3 arranged at two ends of the metal corrugated pipe 1, wherein a flange 4 is arranged at the end part of the metal corrugated pipe 1, a rubber sleeve 5 matched with the outer wall of the connector 3 is arranged at the end part of the flange 4, a first threaded sleeve 6 matched with the outer wall of the connector 3 is arranged outside the rubber sleeve 5, and a plurality of first grooves 7 arranged at intervals are formed outside the connector 3;

a first boss 8 is arranged at the end part of the outer sleeve 2, a reinforcing cap 9 is arranged outside the end part of the outer sleeve 2, the end part of the reinforcing cap 9 is matched with the flange 4, the rubber sleeve 5 and the first threaded sleeve 6, a second groove 10 matched with the outer wall of the first boss 8 is arranged in the reinforcing cap 9, a first sealing ring 11 positioned between the reinforcing cap 9, the first boss 8 and the flange 4 and the metal corrugated pipe 1 is arranged in the second groove 10, a second threaded sleeve 12 in limit fit with the reinforcing cap 9 is arranged outside the reinforcing cap 9, and a matching thread 13 is arranged between the inner wall of the second threaded sleeve 12 and the outer wall of the first threaded sleeve 6;

the rubber sleeve 5 is provided with a chamfer wall 14 matched with the inner wall of the first screw sleeve 6, the top and the bottom of the first boss 8 are both obliquely arranged with the outer sleeve 2, and the end part of the first sealing ring 11 is tightly matched with the end part of the first boss 8, the outer wall of the first boss 8 and the inner wall of the reinforcing cap 9;

a second boss 15 matched with the outer wall of the flange 4, the end part of the reinforcing cap 9 and the inner wall of the first screw sleeve 6 is arranged at the end part of the rubber sleeve 5, a third groove 16 is arranged at the end part of the first screw sleeve 6, a second sealing ring 17 is arranged between the third groove 16 and the connector 3, a third boss 18 in limit fit with the second screw sleeve 12 is arranged on the outer wall of the reinforcing cap 9, and a third sealing ring 19 with a trapezoidal section is arranged between the third boss 18 and the second screw sleeve 12;

the end of the connector 3 extends to the end of the metal corrugated pipe 1, the cross section of the outer wall of the first groove 7 is of a V-shaped or arc-shaped structure, and an internal thread 20 and a fourth sealing ring 21 are arranged inside the connector 3 or an external thread 22 and a fifth sealing ring 23 are arranged outside the connector.

The working principle of the utility model is as follows:

referring to the attached drawings, a second sealing ring 17 is arranged in a third groove 16 of a first threaded sleeve 6, the first threaded sleeve 6 is sleeved outside a connector 3, a rubber sleeve 5 is pressed between the first threaded sleeve 6 and the connector 3, the rubber sleeve 5 is matched and clamped with the first groove 7 of which the outer wall section of the connector 3 is in a V-shaped or arc-shaped structure through elastic deformation, and a chamfer wall 14 facilitates the insertion of the rubber sleeve 5 and increases the sealing fit area with the first threaded sleeve 6;

sleeving a second threaded sleeve 12 outside the reinforcing cap 9 to limit by a third boss 18, arranging a third sealing ring 19 with a section presenting a figure between the third boss 18 and the inner wall of the second threaded sleeve 12, sleeving the second threaded sleeve 12 outside the outer sleeve 2, sleeving a first sealing ring 11 outside the end of the corrugated pipe 1 by clearance fit of a second groove 10 and a first boss 8 at the end of the outer sleeve 2, and sealing fit among the reinforcing cap 9, the first boss 8, the flange 4 and the metal corrugated pipe 1;

the first threaded sleeve 6 or the second threaded sleeve 12 is rotated, the first threaded sleeve 6 and the second threaded sleeve 12 are oppositely screwed and connected through the matching threads 13 on the inner wall of the second threaded sleeve 12 and the outer wall of the first threaded sleeve 6, the first threaded sleeve 6 drives the end part of the connector 3 to be inserted into the end of the corrugated pipe 1 under the action of clamping the connector 3 by the rubber sleeve 5, the reinforcing cap 9 and the flange 4 tightly press the end part of the rubber sleeve 5, the elastic deformation and the sealing reliability of the rubber sleeve 5 are ensured, and the sealing area and the matching tightness of the rubber sleeve 5 are increased through a second boss 15 matched with the outer wall of the flange 4, the end part of the reinforcing cap 9 and the inner wall of the first threaded sleeve 6;

the internal thread 20 and the fourth sealing ring 21 or the external thread 22 and the fifth sealing ring 23 inside the connector 3 are used for being connected with a gas pipeline in a sealing way, gas enters the metal corrugated pipe 1 of the metal hose through the connector 3 to circulate, the metal corrugated pipe 1 has the advantages of good flexibility, fatigue resistance, high pressure bearing capacity, good temperature resistance, corrosion resistance and the like, and the outer part of the outer sleeve 2 is protected;

in conclusion, after the first threaded sleeve 6 is connected with the second threaded sleeve 12, the rubber sleeve 5 compresses the clamping connector 3 by the first threaded sleeve 6, the flange 4 and the reinforcing cap 9 and seals the connector 3 and the metal corrugated pipe 1; the outer sleeve 2 is matched with the second groove 10 through the first boss 8 to be limited, the rubber sleeve 5 is increased through the first sealing ring 11, the metal corrugated pipe 1 and the sealing performance between the reinforcing caps 9 is increased through the second sealing ring 17, the sealing performance between the first threaded sleeve 6 and the connecting head 3 is increased through the second sealing ring 17, the sealing performance between the second threaded sleeve 12 and the reinforcing caps 9 is increased through the third sealing ring 19, the gas leakage preventing function is detachably mounted, quickly connected and increased, and the gas use safety is favorably improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. The gas-fired safe metal hose with the sealing and gas leakage preventing functions comprises a metal corrugated pipe (1), an outer sleeve (2) arranged outside the metal corrugated pipe (1) and connectors (3) arranged at two ends of the metal corrugated pipe (1), and is characterized in that a flange (4) is arranged at the end part of the metal corrugated pipe (1), a rubber sleeve (5) matched with the outer wall of the connector (3) is arranged at the end part of the flange (4), a first threaded sleeve (6) matched with the outer wall of the connector (3) is arranged outside the rubber sleeve (5), and a plurality of first grooves (7) arranged at intervals are formed outside the connector (3);

the utility model discloses a corrugated metal pipe, including overcoat (2), outer cover (2), rubber sleeve (5), reinforcement cap (9), first boss (8) outer wall complex second recess (10) are equipped with in reinforcement cap (9), be equipped with in second recess (10) and be located first sealing washer (11) between reinforcement cap (9), first boss (8) and flange (4) and corrugated metal pipe (1) with flange (4), first boss (8) and first swivel nut (6) outer wall, reinforcement cap (9) is equipped with outward and reinforces cap (9) limit fit's second swivel nut (12), be equipped with between second swivel nut (12) inner wall and first swivel nut (6) outer wall and cooperate screw thread (13).

2. The gas-fired safety metal hose with the sealing and leakage-proof functions as claimed in claim 1, wherein the end of the rubber sleeve (5) is provided with a second boss (15) which is matched with the outer wall of the flange (4), the end of the reinforcing cap (9) and the inner wall of the first screw sleeve (6).

3. The gas-fired safety metal hose with the sealing and gas leakage preventing functions as claimed in claim 1, wherein the rubber sleeve (5) is provided with a chamfered wall (14) matched with the inner wall of the first screw sleeve (6).

4. The gas-fired safety metal hose with the sealing and gas leakage preventing functions as claimed in claim 1, wherein a third groove (16) is formed at the end part of the first screw sleeve (6), and a second sealing ring (17) is arranged between the third groove (16) and the connector (3).

5. The safety type metal hose with sealing and air leakage preventing functions as claimed in claim 1, wherein the top and bottom of the first boss (8) are obliquely arranged with the outer sleeve (2), and the end of the first sealing ring (11) is tightly matched with the end of the second boss (15), the outer wall of the second boss (15) and the inner wall of the reinforcing cap (9).

6. The gas-fired safety metal hose with the sealing and gas leakage preventing functions as claimed in claim 1, wherein a third boss (18) in limit fit with the second threaded sleeve (12) is arranged on the outer wall of the reinforcing cap (9).

7. The safety type metal hose with sealing and leakage preventing functions as claimed in claim 6, wherein a third sealing ring (19) with a trapezoidal cross section is arranged between the third boss (18) and the second thread sleeve (12).

8. The gas-fired safety metal hose with the sealing and gas leakage preventing functions as claimed in any one of claims 1 to 7, wherein the end of the connector (3) extends into the end of the metal corrugated pipe (1), and the cross section of the outer wall of the first groove (7) is in a V-shaped or arc-shaped structure.

9. The gas-fired safety type metal hose with the sealing and leakage-proof functions as claimed in claim 8, wherein the connector (3) is internally provided with an internal thread (20) and a fourth sealing ring (21) or externally provided with an external thread (22) and a fifth sealing ring (23).