CN211550811U - A gas pipeline connection structure - Google Patents

Abstract

The utility model belongs to the technical field of the pipe connection, especially, relate to a gas pipeline connection structure. A sealing connecting sleeve is sleeved on the outer side of the joint of the first gas pipeline and the second gas pipeline, and the outer side of the sealing connecting sleeve is fixed through a fastening ferrule; an external fixed limiting sleeve is sleeved on the outer surface of the sealing connecting sleeve, and a limiting clamping groove on the inner side of the external fixed limiting sleeve is matched and clamped with the fastening ferrule; the left side of the external fixed limiting sleeve is fixed on the first gas pipeline through the matching of a connecting thread, a left-handed fixed nut and a first sealing washer; the left side of the outer fixed limiting sleeve and the left side of the sealing connecting sleeve are respectively connected with a right-handed rotation connecting fixing nut through the matching of a first-order thread and a second-order thread, and the right-handed rotation connecting fixing nut is hermetically connected to a second gas pipeline through the matching of a second sealing washer. It adopts the fixed dual connection structure of interior sealed fixed, outer spacing, and the reliability and the leakproofness of connecting have been guaranteed to cooperation joint is fixed each other.

Description

A gas pipeline connection structure

technical field

The utility model belongs to the technical field of pipeline connection, in particular to a gas pipeline connection structure.

Background technique

A pipeline is a device connected by pipes, pipe connectors and valves for conveying gases, liquids or fluids with solid particles. Usually, after the fluid is pressurized by blowers, compressors, pumps and boilers, it flows from the high pressure of the pipeline to the low pressure, and the fluid can also be transported by its own pressure or gravity. Pipelines are widely used, mainly used in building water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, medical oxygen, agricultural irrigation, hydraulic engineering and various industrial installations. Sex directly affects the life safety of patients. The traditional connection method of interspersed and screwed connection is unstable, which is not suitable for medical gas transmission.

Utility model content

In order to solve the defects and deficiencies of the prior art; the purpose of the utility model is a gas pipeline connection structure with simple structure, reasonable design and convenient use. The interlocking clamping and fixing ensures the reliability and sealing of the connection, and ensures the stable operation of the gas pipeline.

In order to achieve the above purpose, the technical scheme adopted by the utility model is: it includes a sealing connection sleeve, a rubber gasket, a fastening ferrule, an external fixing limit sleeve, a limit slot, a connecting thread, a left-handed fixing nut, and a sealing washer. 1. Right-hand screwed fixing nut, primary thread, secondary thread, sealing washer 2; a sealing connection sleeve is sleeved on the outer side of the connection between the gas pipeline 1 and the gas pipeline 2, and the outer side of the sealing connection sleeve passes through the left and right two groups Tighten the ferrule for fixing; the outer surface of the sealing connection sleeve is sleeved with an outer fixed limit sleeve, and the limit slot on the inner side of the outer fixed limit sleeve is matched with the fastening ferrule; and the outer fixed limit sleeve The left side is fixed on the gas pipeline 1 through the cooperation of the connecting thread, the left-handed fixing nut and the sealing washer 1; The fitting is connected with the right-handed fixing nut, and the right-handed fixing nut is sealed and connected to the second gas pipeline through the cooperation of the second sealing washer.

Preferably, the inner side of the sealing connection sleeve is provided with a rubber gasket.

Preferably, the fastening ferrules are respectively fixed on both sides of the gap between the first gas pipeline and the second gas pipeline.

Preferably, the limit slot and the fastening ferrule maintain the same structure.

Preferably, an expansion joint is provided on the left port of the outer fixed limiting sleeve.

After the above structure is adopted, the beneficial effect of the utility model is that it adopts a double connection structure of inner sealing and fixing and outer limit fixing, and the mutual clamping and fixing ensures the reliability and sealing of the connection, and ensures that the gas pipeline can be stably fixed. run.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail by the following specific implementation and accompanying drawings.

Fig. 1 is the structural representation of the utility model;

Figure 2 is a split sectional view of the utility model.

Description of reference numerals: sealing connection sleeve 1, rubber gasket 2, fastening ferrule 3, outer fixing limit sleeve 4, limit slot 5, connecting thread 6, left-handed fixing nut 7, sealing washer 1 8, right Screw the fixing nut 9, the primary thread 10, the secondary thread 11, the sealing washer 2 12, the expansion joint 13, the gas pipeline 1 a, and the gas pipeline 2 b.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present utility model more clear, the present utility model will be described below through the specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are only exemplary and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and are omitted. Other details that are not related to the present invention are included.

Referring to Figure 1 and Figure 2, this specific embodiment adopts the following technical solutions: it comprises a sealing connection sleeve 1, a rubber gasket 2, a fastening ring 3, an externally fixed limit sleeve 4, a limit card slot 5, Connecting thread 6, left-handed fixing nut 7, sealing washer 1 8, right-handed fixing nut 9, primary thread 10, secondary thread 11, sealing washer 2 12; the gas pipeline 1a is connected with the gas pipeline 2b A sealing connection sleeve 1 is sleeved on the outer side of the sealing connection sleeve 1, and the outer side of the sealing connection sleeve 1 is fixed by two sets of left and right fastening rings 3; The limit slot 5 on the inner side of the sleeve 4 is engaged with the fastening ferrule 3; and the left side of the outer fixed limit sleeve 4 is fixed on the left side through the cooperation of the connecting thread 6, the left-handed fixing nut 7 and the sealing washer-8. On the gas pipeline 1 a; the left side of the outer fixing limit sleeve 4 and the left side of the sealing connection sleeve 1 are respectively connected with the right-hand screw fixing nut 9 through the first-grade thread 10 and the second-grade thread 11, and the right-hand screw is fixed The nut 9 is sealingly connected to the second gas pipeline b through the cooperation of the second sealing washer 12 .

Wherein, the inner side of the sealing connection sleeve 1 is provided with a rubber sealing gasket 2; the fastening ferrules 3 are respectively fixed on both sides of the gap where the gas pipeline 1 a and the gas pipeline 2 b are connected; The clamping slot 5 and the fastening ring 3 maintain the same structure; the left port of the outer fixing limit sleeve 4 is provided with an expansion joint 13 .

The operation method of this specific embodiment is as follows: the prime minister connects the first gas pipeline a and the second gas pipeline b, and seals the sealing connection sleeve 1 to the outside of the connection gap, and tightens the ferrule 3 to the sealing connection sleeve 1. Fix and lock to avoid dragging and offset; then snap the outer fixed limit sleeve 4 to the outer side of the sealing connection sleeve 1, so that the inner limit slot 5 and the fastening ring 3 are limited and clamped, and then The outer fixing limit sleeve 4 is fixed by left-hand screwing the fixing nut 7 , and then the right side of the outer fixing limit sleeve 4 and the right side of the rubber gasket 2 are respectively fixed by the double-layer thread of the right-hand screwing fixing nut 9 .

After the above structure is adopted, the beneficial effect of this specific embodiment is: it adopts a double connection structure of inner sealing and fixing and outer limit fixing, and the mutual clamping and fixing ensures the reliability and sealing of the connection, and ensures that the gas pipeline can be stable. operation.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. A gas pipeline connection structure, its characterized in that: the sealing device comprises a sealing connecting sleeve (1), a rubber sealing gasket (2), a fastening ferrule (3), an external fixing limiting sleeve (4), a limiting clamping groove (5), a connecting thread (6), a left-handed connecting fixing nut (7), a first sealing washer (8), a right-handed connecting fixing nut (9), a first-order thread (10), a second-order thread (11) and a second sealing washer (12); the outer side of the joint of the first gas pipeline (a) and the second gas pipeline (b) is sleeved with a sealing connecting sleeve (1), and the outer side of the sealing connecting sleeve (1) is fixed by a left group of fastening ferrules (3) and a right group of fastening ferrules (3); an external fixed limiting sleeve (4) is sleeved on the outer surface of the sealing connecting sleeve (1), and a limiting clamping groove (5) on the inner side of the external fixed limiting sleeve (4) is matched and clamped with the fastening ferrule (3); the left side of the external fixed limiting sleeve (4) is hermetically fixed on the first gas pipeline (a) through the matching of a connecting thread (6), a left-handed connecting fixing nut (7) and a first sealing washer (8); the left side of the outer fixed limiting sleeve (4) and the left side of the sealing connecting sleeve (1) are respectively matched with the right-handed rotation connecting fixing nut (9) through a first-level thread (10) and a second-level thread (11) to be connected with the right-handed rotation connecting fixing nut (9) through a second sealing washer (12) to be connected with the gas pipeline (b) in a sealing mode.

2. A gas pipe connecting structure according to claim 1, wherein: the inner side of the sealing connecting sleeve (1) is provided with a rubber sealing gasket (2).

3. A gas pipe connecting structure according to claim 1, wherein: the fastening ferrules (3) are respectively fixed on two sides of a gap at the joint of the first gas pipeline (a) and the second gas pipeline (b).

4. A gas pipe connecting structure according to claim 1, wherein: the limiting clamping groove (5) and the fastening ferrule (3) keep the same structure.

5. A gas pipe connecting structure according to claim 1, wherein: and an expansion joint (13) is arranged at the port on the left side of the external fixing limiting sleeve (4).

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