CN223754886U - A steel-plastic conversion joint for underground gas pipelines - Google Patents

Abstract

The utility model discloses an underground gas pipeline steel-plastic adapter, which comprises an adapter main body, wherein an inner collar is arranged on the adapter main body, an outer clamping ring is connected to the inner collar through threads, a middle collar is arranged between the two outer clamping rings, the inner collar comprises an outer wall of the inner collar, an inner wall of the inner collar and a pressing plate, the inner collar is sleeved on a pipeline port, the pipeline port is positioned between the outer wall of the inner collar and the inner wall of the inner collar.

Description

Underground gas pipeline steel-plastic adapter

Technical Field

The utility model relates to the technical field of pipeline connectors, in particular to a steel-plastic adapter for an underground gas pipeline.

Background

The underground gas pipeline adapter is a key component for connecting pressure pipelines of different materials, specifications or designs, ensures the tightness and safety of a gas conveying system through special structural design, meets the requirements of pipeline maintenance, extension or connection of new and old pipe networks, and has corrosion-resistant materials and standardized production strictly conforming to gas engineering specifications, so that leakage risks are effectively prevented, and stable operation of an underground gas network is ensured.

The existing adapter is mostly in threaded connection, and is easy to loosen only through threaded connection, so that pipeline gas leakage is caused, and therefore the underground gas pipeline steel-plastic adapter is required to meet the demands of people.

Disclosure of utility model

The utility model aims to provide a steel-plastic adapter for an underground gas pipeline, which aims to solve the problems in the background technology.

The utility model provides a steel-plastic adapter for an underground gas pipeline, which comprises an adapter main body, wherein an inner collar is arranged on the adapter main body, an outer clamping ring is connected on the inner collar in a threaded manner, and a middle collar is jointly arranged between the two outer clamping rings;

preferably, the inner collar comprises an outer wall of the inner collar, an inner wall of the inner collar and a pressing plate, the inner collar is sleeved on the pipeline opening, the pipeline opening is positioned between the outer wall of the inner collar and the inner wall of the inner collar, the pressing plate is positioned at the inner side of the inner wall of the inner collar, and a second gasket is arranged between the inner wall of the inner collar and the pressing plate;

preferably, the outer clamping ring comprises an outer clamping ring outer wall and an outer clamping ring inner wall, the outer clamping ring outer wall is in threaded connection with the outer sleeve ring outer wall, and the outer clamping ring inner wall is in contact with the pressing plate.

Preferably, a first gasket is arranged between the outer wall of the inner collar and the inner wall of the inner collar, and the pipeline port is propped against the first gasket.

Preferably, the inner collar is provided with a retaining plate, a third gasket is arranged on the retaining plate, and the end point of the inner wall of the outer snap ring is abutted against the third gasket.

Preferably, a fourth gasket and a fifth gasket are arranged between the outer wall of the outer clamping ring and the inner wall of the outer clamping ring, and the fourth gasket and the fifth gasket are respectively matched with the outer wall of the inner clamping ring, the inner wall of the inner clamping ring and the pressing plate.

Preferably, the middle lantern ring is sleeved with a middle lantern ring hoop piece, and the middle lantern ring hoop piece is positioned between the two outer clamping rings.

Preferably, the outer clamping ring is sleeved on the middle lantern ring, and a sixth gasket is sleeved between the outer clamping ring and the middle lantern ring.

Preferably, the outer side of the middle lantern ring is sleeved with a seventh washer, one side of the seventh washer is contacted with the outer clamping ring, and the other side of the seventh washer is contacted with the sixth washer.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, pipelines with different sizes are matched through the inner collar, then the outer clamping ring is installed on the inner collar, the inner wall of the outer clamping ring is in contact with the pressing plate through the threaded connection of the outer wall of the inner collar and the outer wall of the outer clamping ring, in the installation process, the second gasket between the inner wall of the inner collar and the pressing plate is extruded, the pressure is increased, the connection among the pipeline mouth, the inner collar and the outer clamping ring is firmer, the middle collar hoop piece is sleeved on the middle collar, the two ends of the middle collar hoop piece prop against the two outer clamping rings, and the outer clamping ring is limited through the middle collar hoop piece, so that the loose is prevented.

Drawings

FIG. 1 is a schematic perspective view of an underground gas pipeline steel-plastic adapter according to the present utility model;

FIG. 2 is a schematic cross-sectional view of an underground gas pipeline steel-plastic adapter according to the present utility model;

FIG. 3 is an enlarged view at A of FIG. 2;

fig. 4 is an enlarged view at B of fig. 2.

In the figure, 1, a main body of the adapter, 2, an inner collar, 3, an outer collar, 4, a middle collar, 21, an outer wall of the inner collar, 22, an inner wall of the inner collar, 23, a pressing plate, 24, a second gasket, 25, a first gasket, 26, a retaining plate, 27, a third gasket, 31, an outer collar outer wall, 32, an inner wall of the outer collar, 33, a fourth gasket, 34, a fifth gasket, 41, a middle collar hoop, 42, a sixth gasket, 43 and a seventh gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to solve the problem that the adapter is easy to loosen and causes leakage of pipeline gas only through threaded connection, an inner collar 2 is arranged on the adapter main body 1, an outer clamping ring 3 is connected on the inner collar 2 through threads, a middle collar 4 is jointly arranged between the two outer clamping rings 3, the inner collar 2 is sleeved on a pipeline port needing to be connected, the outer clamping ring 3 is arranged on the inner collar 2, and finally, the two outer clamping rings 3 are propped against through a middle collar hoop piece 41 to prevent loosening;

In order to firmly install the inner collar 2 at the pipeline mouth, the inner collar 2 comprises an inner collar outer wall 21, an inner collar inner wall 22 and a pressing plate 23, the inner collar 2 is sleeved at the pipeline mouth, the pipeline mouth is positioned between the inner collar outer wall 21 and the inner collar inner wall 22, the pressing plate 23 is positioned at the inner side of the inner collar inner wall 22, a second gasket 24 is arranged between the inner collar inner wall 22 and the pressing plate 23, a first gasket 25 is installed between the inner collar outer wall 21 and the inner collar inner wall 22, the pipeline mouth is propped against the first gasket 25, a propping plate 26 is arranged on the inner collar 2, a third gasket 27 is installed on the propping plate 26, the end point of the outer collar inner wall 32 is propped against the third gasket 27, and when the underground gas pipeline is switched, a proper-specification adapter is selected according to the pipeline size, and the pipeline mouth is inserted between the inner collar outer wall 21 and the inner collar inner wall 22, so that the pipeline mouth is propped against the first gasket 25;

In order to fix the inner collar 2 by the outer collar 3, the outer collar 3 comprises an outer collar outer wall 31 and an outer collar inner wall 32, the outer collar outer wall 31 and the inner collar outer wall 21 are in threaded connection, the outer collar inner wall 32 is in contact with the pressing plate 23, a fourth gasket 33 and a fifth gasket 34 are arranged between the outer collar outer wall 31 and the outer collar inner wall 32, the fourth gasket 33 and the fifth gasket 34 are respectively matched with the inner collar outer wall 21, the inner collar inner wall 22 and the pressing plate 23, a pipeline opening is abutted against the first gasket 25, then the outer collar 3 is arranged on the inner collar 2, the outer collar inner wall 32 and the pressing plate 23 are in contact with each other in the installation process through the threaded connection of the inner collar outer wall 21 and the outer collar outer wall 31, and the second gasket 24 between the inner collar inner wall 22 and the pressing plate 23 is extruded, and the pressure is increased, so that the connection among the pipeline opening, the inner collar 2 and the outer collar 3 is firmer;

In order to prevent the inner collar 2 and the outer collar 3 from loosening, the middle collar 4 is sleeved with the middle collar hoop 41, the middle collar hoop 41 is positioned between the two outer collars 3, the outer collar 3 is sleeved on the middle collar 4, a sixth gasket 42 is sleeved between the outer collar 3 and the middle collar 4, the outer side of the middle collar 4 is sleeved with a seventh gasket 43, one side of the seventh gasket 43 is contacted with the outer collar 3, the other side of the seventh gasket 43 is contacted with the sixth gasket 42, after the two outer collars 3 are installed, the middle collar 4 is sleeved with the middle collar hoop 41, two ends of the middle collar hoop 41 are propped against the two outer collars 3, the outer collars 3 are limited through the middle collar hoop 41, and the loosening is prevented.

When the underground gas pipeline is switched, firstly, a switching joint with proper specification is selected according to the pipeline size, a pipeline port is inserted between the outer wall 21 of the inner lantern ring and the inner wall 22 of the inner lantern ring, so that the pipeline port props against the first gasket 25, then the outer lantern ring 3 is installed on the inner lantern ring 2, the outer lantern ring 32 and the pressing plate 23 are mutually contacted through the threaded connection of the outer lantern ring outer wall 21 and the outer lantern ring outer wall 31, in the installation process, the second gasket 24 between the inner lantern ring inner wall 22 and the pressing plate 23 is extruded, the pressure is increased, the connection among the pipeline port, the inner lantern ring 2 and the outer lantern ring 3 is firmer, after the installation of the two outer lantern rings 3 is completed, the middle lantern ring hoop piece 41 is sleeved on the middle lantern ring 4, and two ends of the middle lantern ring hoop piece 41 props against the two outer lantern rings 3, and the outer lantern ring 3 is limited through the middle lantern ring hoop piece 41, so that the loose is prevented.

While the basic principles and main features of the present utility model and advantages of the present utility model have been shown and described above, it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments and can be embodied in other specific forms without departing from the spirit or essential features of the present utility model, and therefore, the embodiments should be considered exemplary and non-limiting in all respects, the scope of the present utility model is defined by the appended claims rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A steel-plastic conversion joint for underground gas pipelines, comprising a conversion joint body (1); characterized in that: an inner sleeve ring (2) is provided on the conversion joint body (1), an outer retaining ring (3) is threadedly connected to the inner sleeve ring (2), and a middle sleeve ring (4) is installed between the two outer retaining rings (3); The inner ring (2) includes an outer wall (21), an inner wall (22), and a pressure plate (23). The inner ring (2) is fitted onto the pipe opening, which is located between the outer wall (21) and the inner wall (22). The pressure plate (23) is located inside the inner wall (22). A second washer (24) is provided between the inner wall (22) and the pressure plate (23). The outer retaining ring (3) includes an outer retaining ring outer wall (31) and an outer retaining ring inner wall (32). The outer retaining ring outer wall (31) and the inner retaining ring outer wall (21) are threaded together. The outer retaining ring inner wall (32) is in contact with the pressure plate (23). 2. The underground gas pipeline steel-plastic conversion joint according to claim 1, characterized in that: a first washer (25) is installed between the outer wall (21) of the inner ring and the inner wall (22) of the inner ring, and the pipe opening is pressed against the first washer (25). 3. A steel-plastic conversion joint for underground gas pipelines according to claim 1, characterized in that: the inner sleeve (2) is provided with a stop plate (26), a third washer (27) is installed on the stop plate (26), and the end of the inner wall (32) of the outer retaining ring presses against the third washer (27). 4. A steel-plastic conversion joint for underground gas pipelines according to claim 1, characterized in that: a fourth washer (33) and a fifth washer (34) are installed between the outer wall (31) of the outer retaining ring and the inner wall (32) of the outer retaining ring, and the fourth washer (33) and the fifth washer (34) are respectively adapted to the outer wall (21) of the inner sleeve ring, the inner wall (22) of the inner sleeve ring and the pressure plate (23). 5. A steel-plastic conversion joint for underground gas pipelines according to claim 1, characterized in that: a middle ring clamp (41) is sleeved on the middle ring (4), and the middle ring clamp (41) is located between two outer clamping rings (3). 6. A steel-plastic conversion joint for underground gas pipelines according to claim 5, characterized in that: the outer retaining ring (3) is sleeved on the middle retaining ring (4), and a sixth washer (42) is sleeved between the outer retaining ring (3) and the middle retaining ring (4). 7. A steel-plastic conversion joint for underground gas pipelines according to claim 6, characterized in that: a seventh washer (43) is sleeved on the outer side of the middle sleeve (4), one side of the seventh washer (43) is in contact with the outer retaining ring (3), and the other side of the seventh washer (43) is in contact with the sixth washer (42).