Gas conveying pipeline connecting device

Abstract

The utility model discloses a gas conveying pipeline connecting device, and relates to the technical field of gas pipelines. The device comprises a first gas pipeline, a connecting pipe and a second gas pipeline, the front end of the first gas pipeline is sleeved and fixed with a first connecting seat, the front side of the first connecting seat is fixedly provided with a connecting branch pipe, the outer wall of the connecting branch pipe is provided with an external thread, and the front end of the connecting branch pipe is provided with a notch; the rear end of the second gas pipeline is fixedly sleeved with a second connecting base, a through groove is formed in the second connecting base, and the portion, on the front side of the second connecting base, of the second gas pipeline is movably sleeved with a connecting sleeve. The front end of the first gas pipeline and the rear end of the second gas pipeline are inserted into the two ends of the connecting pipe respectively and abut against the front annular sealing gasket and the rear annular sealing gasket, so that the connecting branch pipes between the adjacent notches penetrate through the through grooves and are in threaded connection with the connecting sleeve. The quick sealing connection of the first gas pipeline and the second gas pipeline can be realized, and the operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pipelines, and in particular relates to a gas transmission pipeline connecting device. Background Art

[0002] When the existing gas pipeline is connected by flange, two concentric flanges are directly used for fixing. The sealing performance of the gas pipeline is poor, and leakage is prone to occur during the use of the gas pipeline, which is not conducive to energy saving. After searching, the patent with application number 202021674262.3 discloses a gas pipeline connection device. In view of the problem that the existing gas pipeline is directly fixed by two concentric flanges when connected by flange, the sealing performance of the gas pipeline is poor, and leakage is prone to occur during the use of the gas pipeline, which is not conducive to energy saving, the following scheme is proposed, which includes a first flange and a second flange, and the first and second flanges are respectively fixedly installed with a first connecting pipe and a second connecting pipe on the side close to each other, and the first flange and the second flange are fixedly installed, and the first and second connecting pipes are sealed and fixedly mounted with the same sealing block on the side close to each other, and a sealing hole is opened on one side of the sealing block.

[0003] However, in actual use, the applicant found that when connecting two gas pipelines, it is necessary to use multiple structures such as long bolts, a first connecting pipeline, a second connecting pipeline, a seal, a clamping ring, a sealing tube and a sealing ring, which is not convenient to operate. In view of this, we propose a gas transmission pipeline connection device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a gas transmission pipeline connection device, comprising a first gas pipeline, a connecting pipe and a second gas pipeline, wherein the front end of the first gas pipeline is sleeved and fixed with a first connecting seat, a connecting branch pipe is fixedly arranged on the front side of the first connecting seat, an external thread is provided on the outer wall of the connecting branch pipe, a notch is provided on the front end of the connecting branch pipe, a second connecting seat is sleeved and fixed on the rear end of the second gas pipeline, a through groove is provided on the second connecting seat, a connecting sleeve is movably sleeved on the second gas pipeline on the front side of the second connecting seat, an internal thread is provided on the inner side wall of the connecting sleeve, the external thread cooperates with the internal thread, an annular protrusion is fixedly arranged on the middle part of the inner side of the connecting pipe, annular sealing gaskets are fixedly connected to the front and rear sides of the annular protrusion, and the front end of the first gas pipeline and the rear end of the second gas pipeline are respectively abutted against the annular sealing gaskets at two locations.

[0006] Preferably, sealing rings are fixed on the inner side walls of the connecting pipes on the front and rear sides of the annular sealing gasket, and two sealing rings are provided on the front and rear sides of the annular sealing gasket.

[0007] Preferably, the two sealing rings on the front side are tightly fitted to the outer wall of the front end of the first gas pipeline, and the two sealing rings on the rear side are tightly fitted to the outer wall of the rear end of the second gas pipeline.

[0008] Preferably, the front end of the connecting branch pipe has six notches in a circular array, and the second connecting seat has six through grooves in a circular array.

[0009] Preferably, the connecting branch pipe between two adjacent notches movably penetrates the through slot.

[0010] Preferably, a hexagonal adjustment portion is provided on the outer side wall of the connecting sleeve.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a gas transmission pipeline connecting device, which can realize the quick sealing connection of the first gas pipeline and the second gas pipeline by respectively inserting the front end of the first gas pipeline and the rear end of the second gas pipeline into the two ends of the connecting pipe and abutting against the front and rear annular sealing pads, so that the connecting branch pipe between the adjacent notches passes through the through groove and is screwed with the connecting sleeve thread, and the operation is convenient. By arranging a sealing ring inside the connecting pipe, the connection between the first gas pipeline and the connecting pipe, and the connection between the second gas pipeline and the connecting pipe can be further sealed, so that gas leakage at the connection can be further prevented, and the connection effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a front structural schematic diagram of a gas transmission pipeline connection device of the utility model;

[0015] Figure 2 This is a rear structural schematic diagram of a gas transmission pipeline connection device of the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the internal structure of a connecting pipe in a gas transmission pipeline connecting device.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. First gas pipeline; 2. First connecting seat; 3. Connecting branch pipe; 31. External thread; 32. Notch; 4. Connecting pipe; 41. Annular protrusion; 5. Second connecting seat; 51. Through groove; 6. Connecting sleeve; 61. Internal thread; 62. Hexagonal adjusting part; 7. Second gas pipeline; 8. Annular sealing gasket; 9. Sealing ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 As shown, the utility model provides a technical solution:

[0021] Embodiment 1: A gas transmission pipeline connection device comprises a first gas pipeline 1, a connecting pipe 4 and a second gas pipeline 7. The front end of the first gas pipeline 1 is sleeved and fixed with a first connecting seat 2, and a connecting branch pipe 3 is fixedly arranged on the front side of the first connecting seat 2. An external thread 31 is provided on the outer wall of the connecting branch pipe 3, and a notch 32 is provided on the front end of the connecting branch pipe 3. The notches 32 on the front end of the connecting branch pipe 3 are provided in a circular array at six locations. The rear end of the second gas pipeline 7 is sleeved and fixed with a second connecting seat 5, and a through groove 51 is provided on the second connecting seat 5. The through grooves 51 are provided in a circular array at six locations, and the connecting branch pipe 3 between two adjacent notches 32 can flexibly penetrate the through grooves 51. There are a total of six connecting branch pipes 3 between two adjacent notches 32, which can penetrate the six through grooves 51. A connecting sleeve 6 is flexibly sleeved on the second gas pipeline 7 on the front side of the second connecting seat 5. An internal thread 61 is provided on the inner side wall of the connecting sleeve 6. The external thread 31 and the internal thread 61 are threadedly matched to realize the connection and fixation between the first connecting seat 2 and the connecting branch pipe 3, so as to realize the quick connection between the first gas pipeline 1 and the second gas pipeline 7. The connection is fast and fixed, and the operation is convenient. A hexagonal adjustment portion 62 is provided on the outer wall of the connecting sleeve 6, and the connecting sleeve 6 can be rotated by using a wrench. An annular protrusion 41 is fixedly provided in the middle of the inner side of the connecting pipe 4, and an annular sealing gasket 8 is fixedly connected to the front and rear sides of the annular protrusion 41. The front end of the first gas pipeline 1 and the rear end of the second gas pipeline 7 are respectively abutted on the two annular sealing gaskets 8, which can be used to achieve the sealing between the first gas pipeline 1, the second gas pipeline 7 and the annular protrusion 41. When the first gas pipeline 1 and the second gas pipeline 7 are connected, The front end of the first gas pipeline 1 and the rear end of the second gas pipeline 7 can be respectively inserted into the two ends of the connecting pipe 4 and abutted against the two annular sealing gaskets 8. At this time, the connecting branch pipe 3 between the two adjacent notches 32 can pass through the through groove 51 on the second connecting seat 5. Finally, the connecting sleeve 6 is screwed onto the front end of the connecting branch pipe 3 using a wrench. As the connecting sleeve 6 is gradually tightened, the first gas pipeline 1 and the second gas pipeline 7 can effectively abut against the two annular sealing gaskets 8, thereby realizing the quick connection of the first gas pipeline 1 and the second gas pipeline 7.

[0022] Embodiment 2: The difference between this embodiment and embodiment 1 is that, sealing rings 9 are fixed on the inner side walls of the connecting pipe 4 on both sides of the front and rear of the annular sealing gasket 8, and two sealing rings 9 are provided on both sides of the front and rear of the annular sealing gasket 8. The two sealing rings 9 on the front side are tightly fitted with the outer wall of the front end of the first gas pipeline 1, and the two sealing rings 9 on the rear side are tightly fitted with the outer side wall of the rear end of the second gas pipeline 7. The provided sealing rings 9 can further seal the connection between the front end of the first gas pipeline 1 and the connecting pipe 4, and further seal the connection between the rear end of the second gas pipeline 7 and the connecting pipe 4. The connection between the first gas pipeline 1 and the connecting pipe 4 is sealed, thereby effectively preventing gas leakage from occurring at the connection between the pipelines. When the front end of the first gas pipeline 1 abuts against the annular sealing gasket 8 on the rear side, the sealing ring 9 on the rear side can fit tightly with the outer side wall of the front end of the first gas pipeline 1, thereby further sealing the connection between the first gas pipeline 1 and the connecting pipe 4. When the rear end of the second gas pipeline 7 abuts against the annular sealing gasket 8 on the front side, the sealing ring 9 on the front side can fit tightly with the outer side wall of the rear end of the second gas pipeline 7, thereby further sealing the connection between the second gas pipeline 7 and the connecting pipe 4, thereby further preventing gas leakage from occurring at the connection.

[0023] Working principle: When in use, when connecting the first gas pipeline 1 and the second gas pipeline 7, the front end of the first gas pipeline 1 and the rear end of the second gas pipeline 7 can be respectively inserted into the two ends of the connecting pipe 4 and abutted against the two annular sealing pads 8. At this time, the connecting branch pipe 3 between the two adjacent notches 32 can pass through the through groove 51 on the second connecting seat 5. Finally, the connecting sleeve 6 is screwed to the front end of the connecting branch pipe 3 with a wrench. As the connecting sleeve 6 is gradually tightened, the first gas pipeline 1 and the second gas pipeline 7 can effectively abut against the two annular sealing pads 8, thereby achieving Now for the quick connection of the first gas pipeline 1 and the second gas pipeline 7, when the front end of the first gas pipeline 1 abuts against the annular sealing gasket 8 on the rear side, the sealing ring 9 on the rear side can fit tightly with the outer side wall of the front end of the first gas pipeline 1, and the connection between the first gas pipeline 1 and the connecting pipe 4 is further sealed. When the rear end of the second gas pipeline 7 abuts against the annular sealing gasket 8 on the front side, the sealing ring 9 on the front side can fit tightly with the outer side wall of the rear end of the second gas pipeline 7, and the connection between the second gas pipeline 7 and the connecting pipe 4 is further sealed, thereby further preventing gas leakage at the connection.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments and any equivalent replacement of some of the technical features therein are within the protection scope of the present invention.

Claims

1. A gas transmission pipeline connection device, comprising a first gas pipeline (1), a connecting pipe (4) and a second gas pipeline (7), characterized in that: The front end of the first gas pipeline (1) is sleeved and fixed with a first connection seat (2), the front side of the first connection seat (2) is fixedly provided with a connection branch pipe (3), the outer wall of the connection branch pipe (3) is provided with an external thread (31), the front end of the connection branch pipe (3) is provided with a notch (32), the rear end of the second gas pipeline (7) is sleeved and fixed with a second connection seat (5), the second connection seat (5) is provided with a through groove (51), and the second gas pipe (5) on the front side of the second connection seat (5) is provided with a through groove (52). A connecting sleeve (6) is movably sleeved on the gas pipeline (7), an inner wall of the connecting sleeve (6) is provided with an internal thread (61), the external thread (31) and the internal thread (61) are threadedly matched, an annular protrusion (41) is fixedly provided in the middle of the inner side of the connecting pipe (4), and an annular sealing gasket (8) is fixedly connected to the front and rear sides of the annular protrusion (41), and the front end of the first gas pipeline (1) and the rear end of the second gas pipeline (7) are respectively abutted against the annular sealing gaskets (8) at two locations.

2. A gas transmission pipeline connection device according to claim 1, characterized in that: Sealing rings (9) are fixed on the inner side walls of the connecting pipe (4) on both sides of the annular sealing gasket (8), and two sealing rings (9) are provided on both sides of the annular sealing gasket (8).

3. A gas transmission pipeline connection device according to claim 2, characterized in that: The two sealing rings (9) on the front side are tightly fitted to the outer wall of the front end of the first gas pipeline (1), and the two sealing rings (9) on the rear side are tightly fitted to the outer wall of the rear end of the second gas pipeline (7).

4. A gas transmission pipeline connection device according to claim 1, characterized in that: The notches (32) at the front end of the connecting branch pipe (3) are provided in six locations in a circular array, and the through grooves (51) on the second connecting seat (5) are provided in six locations in a circular array.

5. A gas transmission pipeline connection device according to claim 4, characterized in that: The connecting branch pipe (3) between two adjacent notches (32) movably penetrates the through groove (51).

6. A gas transmission pipeline connection device according to claim 1, characterized in that: A hexagonal adjustment portion (62) is provided on the outer side wall of the connecting sleeve (6).

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