Steel-plastic adapter for underground gas pipeline

Abstract

The utility model discloses a steel-plastic conversion joint for an underground gas pipeline. The steel-plastic conversion joint comprises a conversion joint main body, an inner lantern ring is arranged on the adapter body, outer lantern rings are in threaded connection with the inner lantern ring, a middle lantern ring is installed between the two outer lantern rings, the inner lantern ring comprises an inner lantern ring outer wall, an inner lantern ring inner wall and a pressing plate, the inner lantern ring is connected to a pipeline opening in a sleeving mode, and the pipeline opening is located between the inner lantern ring outer wall and the inner lantern ring inner wall; the inner lantern ring is matched with pipelines of different sizes, then the outer lantern ring is installed on the inner lantern ring, the outer wall of the inner lantern ring is connected with the outer wall of the outer lantern ring in a threaded mode, in the installation process, the inner wall of the outer lantern ring makes contact with the pressing plate, the second gasket between the inner wall of the inner lantern ring and the pressing plate is extruded, pressure is increased, and therefore the pressure is increased. The connection among the pipeline opening, the inner lantern ring and the outer snap ring is firmer; the middle lantern ring is sleeved with the middle lantern ring hoop piece, the two ends of the middle lantern ring hoop piece abut against the two outer snap rings, the outer snap rings are limited through the middle lantern ring hoop piece, and loosening is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connecting piece technical field, specifically underground gas pipeline steel plastic conversion joint. BACKGROUND

[0002] Underground gas pipeline conversion joint is the key part of connecting different material, specification or design pressure pipeline, and through special structure design ensures the sealing and safety of gas delivery system, adapts pipeline maintenance, expansion or new and old pipe network connection demand, and its corrosion -resistant material and standardization production strictly accords with gas engineering specification, effectively prevents the leakage risk, and guarantees underground gas network stable operation.

[0003] The existing adapter is mostly threaded connection, only through threaded connection, is easy to loosen, leads to pipeline gas leakage, therefore needs a kind of underground gas pipeline steel plastic conversion joint to meet people's demand. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of underground gas pipeline steel plastic conversion joints, to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of underground gas pipeline steel plastic conversion joint, including conversion joint main part;The inner sleeve ring is equipped on the conversion joint main part, and the outer snap ring is connected by screw thread on the inner sleeve ring, and the middle sleeve ring is installed between the two outer snap rings;

[0006] Preferably, the inner sleeve ring includes inner sleeve ring outer wall, inner sleeve ring inner wall and pressing plate, the inner sleeve ring is sleeved in pipeline mouth, and the pipeline mouth is located between inner sleeve ring outer wall and inner sleeve ring inner wall, the pressing plate is located on the inner side of inner sleeve ring inner wall, and the second gasket is arranged between inner sleeve ring inner wall and pressing plate;

[0007] Preferably, the outer snap ring includes outer snap ring outer wall and outer snap ring inner wall, the outer snap ring outer wall is connected by screw thread with inner sleeve ring outer wall, and the outer snap ring inner wall is in contact with pressing plate.

[0008] Preferably, the first gasket is installed between inner sleeve ring outer wall and inner sleeve ring inner wall, and the pipeline mouth is pressed on the first gasket.

[0009] Preferably, the inner sleeve ring is equipped with abutment plate, the third gasket is installed on the abutment plate, and the endpoint of outer snap ring inner wall is pressed on the third gasket.

[0010] Preferably, the fourth gasket and the fifth gasket are installed between outer snap ring outer wall and outer snap ring inner wall, and the fourth gasket, the fifth gasket are respectively matched with inner sleeve ring outer wall, inner sleeve ring inner wall and pressing plate.

[0011] Preferably, the middle sleeve ring is sleeved with a middle sleeve ring clamp, and the middle sleeve ring clamp is located between the two outer clamps.

[0012] Preferably, the outer clamp is sleeved on the middle sleeve ring, and the sixth gasket is sleeved between the outer clamp and the middle sleeve ring.

[0013] Preferably, the outer side of the middle sleeve ring is sleeved with a seventh gasket, one side of the seventh gasket is in contact with the outer clamp, and the other side of the seventh gasket is in contact with the sixth gasket.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses, through the inner sleeve ring matching different size's pipeline, then install the outer clamp on the inner sleeve ring, through the threaded connection of inner sleeve ring outer wall and outer clamp outer wall, in the installation process, the outer clamp inner wall and the pressing plate are contacted with each other, and extrude the second gasket between the inner sleeve ring inner wall and the pressing plate, increase the pressure, make the connection between the pipeline mouth, the inner sleeve ring and the outer clamp more firm, the middle sleeve ring is sleeved with the middle sleeve ring clamp on the middle sleeve ring, and the both ends of the middle sleeve ring clamp abut against two outer clamps, and the outer clamps are limited through the middle sleeve ring clamp, prevent loosening. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the underground gas pipeline steel-plastic conversion joint that the utility model proposes;

[0017] Figure 2 It is a sectional structure schematic view of the underground gas pipeline steel-plastic conversion joint that the utility model proposes;

[0018] Figure 3 It is Figure 2 The enlarged view of A of the utility model;

[0019] Figure 4 It is the enlarged view of B of the utility model. Figure 2

[0020] In the drawing: 1, conversion joint main part;2, inner sleeve ring;3, outer clamp;4, middle sleeve ring;21, inner sleeve ring outer wall;22, inner sleeve ring inner wall;23, pressing plate;24, second gasket;25, first gasket;26, abutment plate;27, third gasket;31, outer clamp outer wall;32, outer clamp inner wall;33, fourth gasket;34, fifth gasket;41, middle sleeve ring clamp;42, sixth gasket;43, seventh gasket. SPECIFIC EMBODIMENTS

[0021] ​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] Embodiment: Please refer to Figures 1-4 The utility model provides a technical scheme: a kind of underground gas pipeline steel plastic conversion joint, including conversion joint main body 1;To solve the problem that adapter is only connected by thread, easy to loosen, leading to pipeline gas leakage, inner sleeve ring 2 is equipped on conversion joint main body 1, outer snap ring 3 is threadedly connected on inner sleeve ring 2, middle sleeve ring 4 is jointly installed between two outer snap rings 3, by being sleeved in the pipe opening needing to be connected in inner sleeve ring 2, then outer snap ring 3 is installed on inner sleeve ring 2, finally by middle sleeve hoop piece 41 and resist two outer snap rings 3, prevent loosening;

[0023] To make inner sleeve ring 2 firmly installed in pipe opening, inner sleeve ring 2 includes inner sleeve ring outer wall 21, inner sleeve ring inner wall 22 and pressing plate 23, inner sleeve ring 2 is sleeved in pipe opening, pipe opening is located between inner sleeve ring outer wall 21 and inner sleeve ring inner wall 22, pressing plate 23 is located on the inner side of inner sleeve ring inner wall 22, second gasket 24 is equipped between inner sleeve ring inner wall 22 and pressing plate 23, first gasket 25 is installed between inner sleeve ring outer wall 21 and inner sleeve ring inner wall 22, pipe opening is pressed on first gasket 25, abutting plate 26 is equipped on inner sleeve ring 2, third gasket 27 is installed on abutting plate 26, end point of outer snap ring inner wall 32 is pressed on third gasket 27, when connecting underground gas pipeline, first according to the size of pipeline, select the appropriate size of adapter, pipe opening is inserted between inner sleeve ring outer wall 21 and inner sleeve ring inner wall 22, so that pipe opening is pressed on first gasket 25;

[0024] To make outer snap ring 3 can be fixed to inner sleeve ring 2, outer snap ring 3 includes outer snap ring outer wall 31 and outer snap ring inner wall 32, outer snap ring outer wall 31 is threadedly connected with inner sleeve ring outer wall 21, outer snap ring inner wall 32 contacts with pressing plate 23, fourth gasket 33 and fifth gasket 34 are installed between outer snap ring outer wall 31 and outer snap ring inner wall 32, fourth gasket 33, fifth gasket 34 are respectively matched with inner sleeve ring outer wall 21, inner sleeve ring inner wall 22 and pressing plate 23, pipe opening is pressed on first gasket 25, then outer snap ring 3 is installed on inner sleeve ring 2, by the thread connection of inner sleeve ring outer wall 21 and outer snap ring outer wall 31, in the process of installation, outer snap ring inner wall 32 and pressing plate 23 contact each other, and extrude second gasket 24 between inner sleeve ring inner wall 22 and pressing plate 23, increase pressure, make the connection between pipe opening, inner sleeve ring 2 and outer snap ring 3 more firm;

[0025] In order to prevent the inner ring 2 and the outer clamping ring 3 from loosening, the middle ring 4 is sleeved with a middle ring hoop 41, the middle ring hoop 41 is located between the two outer clamping rings 3, the outer clamping ring 3 is sleeved on the middle ring 4, the sixth gasket 42 is sleeved between the outer clamping ring 3 and the middle ring 4, the seventh gasket 43 is sleeved on the outer side of the middle ring 4, one side of the seventh gasket 43 is in contact with the outer clamping ring 3, and the other side of the seventh gasket 43 is in contact with the sixth gasket 42, and after the two outer clamping rings 3 are installed, the middle ring hoop 41 is sleeved on the middle ring 4, the two ends of the middle ring hoop 41 abut against the two outer clamping rings 3, and the outer clamping ring 3 is limited by the middle ring hoop 41, so that loosening is prevented.

[0026] The working principle is that when the underground gas pipeline is connected, the adapter with appropriate specifications is selected according to the size of the pipeline, the pipeline opening is inserted between the inner ring outer wall 21 and the inner ring inner wall 22, the pipeline opening abuts against the first gasket 25, then the outer clamping ring 3 is installed on the inner ring 2, the inner ring outer wall 21 and the outer clamping ring outer wall 31 are threadedly connected, in the installation process, the outer clamping ring inner wall 32 and the pressing plate 23 are in contact with each other, and the second gasket 24 between the inner ring inner wall 22 and the pressing plate 23 is extruded, so that the pressure is increased, the connection between the pipeline opening, the inner ring 2 and the outer clamping ring 3 is more firm, after the two outer clamping rings 3 are installed, the middle ring hoop 41 is sleeved on the middle ring 4, the two ends of the middle ring hoop 41 abut against the two outer clamping rings 3, and the outer clamping ring 3 is limited by the middle ring hoop 41, so that loosening is prevented.

[0027] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model, therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, any figure reference in the claims should not be regarded as limiting the involved claims.

[0028] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principle and spirit of the utility model, the scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An underground gas pipeline steel-plastic transition joint, comprising a transition joint main body (1); characterized in that: The conversion joint body (1) is provided with an inner sleeve ring (2), the inner sleeve ring (2) is threadedly connected with an outer clamping ring (3), and a middle sleeve ring (4) is jointly arranged between the two outer clamping rings (3). The inner sleeve ring (2) comprises an inner sleeve ring outer wall (21), an inner sleeve ring inner wall (22) and a pressing plate (23), the inner sleeve ring (2) is sleeved on the pipeline opening, the pipeline opening is located between the inner sleeve ring outer wall (21) and the inner sleeve ring inner wall (22), the pressing plate (23) is located on the inner side of the inner sleeve ring inner wall (22), and the second gasket (24) is arranged between the inner sleeve ring inner wall (22) and the pressing plate (23). The outer clamping ring (3) comprises an outer clamping ring outer wall (31) and an outer clamping ring inner wall (32), the outer clamping ring outer wall (31) is threadedly connected with the inner sleeve ring outer wall (21), and the outer clamping ring inner wall (32) is in contact with the pressing plate (23).

2. An underground gas pipeline steel-plastic transition joint according to claim 1, characterized in that: The first gasket (25) is arranged between the inner sleeve ring outer wall (21) and the inner sleeve ring inner wall (22), and the pipeline opening is pressed on the first gasket (25).

3. The underground gas pipeline steel-plastic transition joint according to claim 1, characterized in that: The inner sleeve ring (2) is provided with an abutting plate (26), the third gasket (27) is arranged on the abutting plate (26), and the end point of the outer clamping ring inner wall (32) is pressed on the third gasket (27).

4. The underground gas pipeline steel-plastic transition joint according to claim 1, characterized in that: The fourth gasket (33) and the fifth gasket (34) are arranged between the outer clamping ring outer wall (31) and the outer clamping ring inner wall (32), and the fourth gasket (33) and the fifth gasket (34) are respectively matched with the inner sleeve ring outer wall (21), the inner sleeve ring inner wall (22) and the pressing plate (23).

5. The underground gas pipeline steel-plastic transition joint according to claim 1, characterized in that: The middle sleeve ring (4) is sleeved with a middle sleeve ring hoop member (41), and the middle sleeve ring hoop member (41) is located between the two outer clamping rings (3).

6. An underground gas pipeline steel-plastic transition joint according to claim 5, characterized in that: The outer clamping ring (3) is sleeved on the middle sleeve ring (4), and the sixth gasket (42) is sleeved between the outer clamping ring (3) and the middle sleeve ring (4).

7. An underground gas pipeline steel-plastic transition joint according to claim 6, characterized in that: The outer side of the middle sleeve ring (4) is sleeved with the seventh gasket (43), one side of the seventh gasket (43) is in contact with the outer clamping ring (3), and the other side of the seventh gasket (43) is in contact with the sixth gasket (42).

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