S-shaped pipe fitting and household gas pipeline connecting structure with same

Abstract

The utility model provides a kind of S-shaped pipe fitting and household gas pipeline connecting structure with it, the S-shaped pipe fitting includes pipe fitting body;Pipe fitting body includes connecting pipe part;The one end of connecting pipe part is provided with expansion section, and the one end of expansion section away from connecting pipe part forms card pressure socket, and the inside of card pressure socket is embedded with card pressure sealing assembly;The other end of connecting pipe part is provided with reducing section;The axis of reducing section is parallel with the axis of expansion section, and connecting pipe part is overall "S" shape, and make reducing section and expansion section horizontal dislocation;The household gas pipeline connecting structure includes gas main pipe, household pipeline, valve body and above-mentioned two S-shaped pipe fittings;The import end and export end of valve body are connected with import flange and export flange respectively, and one S-shaped pipe fitting is used to connect gas main pipe and import flange, and another S-shaped pipe fitting is used to connect household pipeline and export flange;The utility model can realize the connection of gas main pipe and household pipeline in different shaft state.

Description

Technical Field

[0001] This utility model relates to the field of gas pipe fittings technology, specifically to an S-shaped pipe fitting and a gas pipeline connection structure having the same. Background Technology

[0002] Currently, when renovating gas pipelines in old residential areas, there is often a situation where the axis of the main gas pipe is not collinear with the axis of the incoming pipe. As a result, during the connection process between the main gas pipe and the incoming pipe, there may be instances of forceful and oblique connection, which can lead to stress concentration in the main gas pipe and the incoming pipe. This can result in breakage or poor sealing of the main gas pipe and the incoming pipe, posing a significant safety hazard. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an S-shaped pipe fitting and a gas pipeline connection structure having the same, which can realize the connection between the main gas pipe and the gas pipeline in different axis states.

[0004] This utility model provides an S-shaped pipe fitting, including a pipe fitting body; the pipe fitting body includes a connecting pipe section; one end of the connecting pipe section is provided with an enlarged diameter section, and the end of the enlarged diameter section away from the connecting pipe section forms a crimping socket, and a crimping sealing component is embedded in the inner side of the crimping socket; the other end of the connecting pipe section is provided with a reduced diameter section; the axis of the reduced diameter section is parallel to the axis of the enlarged diameter section, the connecting pipe section is in an "S" shape, and the reduced diameter section and the enlarged diameter section are horizontally misaligned.

[0005] This invention enables the connection of gas main pipes and inlet pipes in different axial states, thereby eliminating the stress concentration defects caused by strong pulling and oblique connection of gas main pipes and inlet pipes, and thus avoiding the occurrence of breakage or poor sealing of gas main pipes and inlet pipes.

[0006] In one possible implementation, an annular step is formed on the inner wall of the connection between the enlarged section and the connecting pipe section. By setting the annular step on the inner wall of the connection between the enlarged section and the connecting pipe section, when the outlet end of the gas main pipe or the inlet end of the inlet pipe is inserted into the enlarged section, the outlet end of the gas main pipe or the inlet end of the inlet pipe can abut against the annular step, thereby limiting the S-shaped fitting to the gas main pipe or the inlet pipe and indicating to the construction personnel that the S-shaped fitting has been inserted into the gas main pipe or the inlet pipe.

[0007] In one possible implementation, a conical annular constriction is formed on the outer wall of the connection between the reduced diameter section and the connecting pipe section. After the conical annular constriction is provided on the outer wall of the connection between the reduced diameter section and the connecting pipe section, the annular constriction can abut against the inlet end of the inlet flange or the outlet end of the outlet flange in the gas pipeline after the reduced diameter section is inserted. This allows for the limiting of the S-type fitting with the inlet flange or the outlet flange, and also indicates to the construction personnel that the S-type fitting has been inserted into the inlet flange or the outlet flange.

[0008] In one possible implementation, an annular conical surface is provided on the outer peripheral wall of the end of the reduced diameter section away from the connecting pipe section. By providing an annular conical surface on the outer peripheral wall of the end of the reduced diameter section away from the connecting pipe section, when the reduced diameter section is inserted into the inlet end of the inlet flange or the outlet end of the outlet flange in the gas pipeline, the annular conical surface can cooperate with and guide the inner wall of the inlet end of the inlet flange or the inner wall of the outlet end of the outlet flange, so as to facilitate the insertion of the reduced diameter section into the inlet end of the inlet flange or the outlet end of the outlet flange.

[0009] A gas pipeline connection structure for a household includes a main gas pipe, an inlet pipe, and a valve body; the inlet end and outlet end of the valve body are respectively connected to an inlet flange and an outlet flange; the gas pipeline connection structure also includes two S-shaped fittings as described above; one S-shaped fitting has a compression fitting sleeved to the outside of the outlet end of the main gas pipe and is compression-sealed to the outlet end of the main gas pipe by a compression sealing assembly, and the reduced diameter portion of the other S-shaped fitting is inserted into the inlet end of the inlet flange and is compression-sealed to the inlet end of the inlet flange, and the reduced diameter portion of the other S-shaped fitting is inserted into the outlet end of the outlet flange, and is compression-sealed to the outlet end of the outlet flange, and the reduced diameter portion of the other S-shaped fitting is inserted into the outlet end of the outlet flange, and the reduced diameter portion of the other S-shaped fitting is compression-sealed to ... Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of the S-shaped pipe fitting; Figure 2 This is a cross-sectional view of an S-shaped pipe fitting. Figure 3 This is a structural diagram of the gas pipeline connection structure for a household. Detailed Implementation

[0011] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0012] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0013] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0014] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] See Figure 1-3 As shown, this application discloses an S-shaped pipe fitting, including a pipe fitting body 1; the pipe fitting body 1 includes a connecting pipe section 11; one end of the connecting pipe section 11 is provided with an enlarged diameter section 12, and the end of the enlarged diameter section 12 away from the connecting pipe section 11 forms a crimping socket 121, and a crimping sealing component 13 is embedded in the inner side of the crimping socket 121; the other end of the connecting pipe section 11 is provided with a reduced diameter section 14; the axis of the reduced diameter section 14 is parallel to the axis of the enlarged diameter section 12, the connecting pipe section 11 is in an "S" shape, and the reduced diameter section 14 and the enlarged diameter section 12 are horizontally misaligned; the aforementioned crimping sealing component 13 is a crimping component composed of a sealing ring, a crimping ring and a bushing in an antistatic toothed ring crimping tee disclosed in Chinese Patent Publication No.: CN222047003U, which is prior art and will not be described in detail here.

[0016] An annular step 15 is formed on the inner wall of the connection between the enlarged section 12 and the connecting pipe section 11. By setting the annular step on the inner wall of the connection between the enlarged section and the connecting pipe section, when the outlet end of the gas main pipe or the inlet end of the inlet pipe is inserted into the enlarged section, the outlet end of the gas main pipe or the inlet end of the inlet pipe can abut against the annular step, thereby limiting the S-shaped fitting to the gas main pipe or the inlet pipe, and indicating to the construction personnel that the S-shaped fitting has been inserted into the gas main pipe or the inlet pipe.

[0017] A conical annular constriction 16 is formed on the outer wall of the connection between the reduced diameter section 14 and the connecting pipe section 11. After the conical annular constriction is set on the outer wall of the connection between the reduced diameter section and the connecting pipe section, the annular constriction can abut against the inlet end of the inlet flange or the outlet end of the outlet flange in the gas pipeline after the reduced diameter section is inserted. This can limit the position of the S-type fitting to the inlet flange or the outlet flange and indicate to the construction personnel that the S-type fitting has been inserted into the inlet flange or the outlet flange.

[0018] An annular conical surface 141 is provided on the outer peripheral wall of the end of the reduced diameter section 14 away from the connecting pipe section 11. After the annular conical surface is provided on the outer peripheral wall of the end of the reduced diameter section away from the connecting pipe section, when the reduced diameter section is inserted into the inlet end of the inlet flange or the outlet end of the outlet flange in the gas pipeline, the annular conical surface can cooperate with the inner wall of the inlet end of the inlet flange or the inner wall of the outlet end of the outlet flange for guidance, so that the reduced diameter section can be inserted into the inlet end of the inlet flange or the outlet end of the outlet flange.

[0019] A gas pipeline connection structure for a household includes a main gas pipe 2, an inlet pipe 3, and a valve body 4; the inlet end and outlet end of the valve body 4 are respectively connected to an inlet flange 5 and an outlet flange 6; the gas pipeline connection structure also includes two S-shaped fittings as described above; one S-shaped fitting has a compression fitting 121 that is sleeved onto the outside of the outlet end of the main gas pipe 2 and is compressed and sealed circumferentially with the outlet end of the main gas pipe 2 by a compression sealing assembly 13; the other S-shaped fitting has a reduced diameter portion 14 that is inserted into the inlet end of the inlet flange 5 and is connected to the inlet flange... The inlet end of pipe 5 is clamped and circumferentially sealed; the clamping socket 121 of another S-shaped fitting is sleeved onto the outside of the inlet end of the inlet pipe 3 and clamped and circumferentially sealed to the inlet end of the inlet pipe 3 via the clamping sealing assembly 13; the reduced diameter part 14 of another S-shaped fitting is inserted into the outlet end of the outlet flange 6 and clamped and circumferentially sealed to the outlet end of the outlet flange 6; by adopting the above structure, when repairing or renovating gas pipelines in old residential areas, if the axis of the main gas pipe and the axis of the inlet pipe are not on the same axis... The use of two S-shaped fittings enables the connection of inlet pipes and gas mains at different axial positions, eliminating the stress concentration defects associated with forcibly connecting them. This avoids the risks of breakage and poor sealing caused by forcefully pulling and obliquely connecting the inlet pipes and gas mains. Furthermore, the use of two S-shaped fittings allows for adjustment of the installation positions of the valve body, inlet flange, and outlet flange when replacing them in the inlet gas pipeline connection structure. This prevents interference between the valve body, inlet flange, and outlet flange and the wall during assembly, facilitating their connection. The compression sealing structure between the reduced diameter section of one of the S-shaped fittings and the inlet end of the inlet flange is achieved through a compression sealing assembly located at the inlet end of the inlet flange. Similarly, the compression sealing structure between the reduced diameter section of the other S-shaped fitting and the outlet end of the outlet flange is achieved through a compression sealing assembly located at the outlet end of the outlet flange.

[0020] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An S-shaped pipe fitting, comprising a fitting body (1); characterized in that: The pipe body (1) includes a connecting pipe section (11); one end of the connecting pipe section (11) is provided with an enlarged diameter section (12), and the end of the enlarged diameter section (12) away from the connecting pipe section (11) forms a crimping socket (121), and a crimping sealing assembly (13) is embedded in the inner side of the crimping socket (121); the other end of the connecting pipe section (11) is provided with a reduced diameter section (14); the axis of the reduced diameter section (14) is parallel to the axis of the enlarged diameter section (12), the connecting pipe section (11) is in an "S" shape, and the reduced diameter section (14) and the enlarged diameter section (12) are horizontally misaligned.

2. The S-shaped pipe fitting according to claim 1, characterized in that: An annular step (15) is formed on the inner wall of the connection between the enlarged diameter section (12) and the connecting pipe section (11).

3. The S-shaped pipe fitting according to claim 1, characterized in that: A conical annular constriction (16) is formed on the outer wall of the connection between the reduced diameter section (14) and the connecting pipe section (11).

4. The S-shaped pipe fitting according to claim 1, characterized in that: An annular conical surface (141) is provided on the outer peripheral wall of the reduced diameter section (14) away from the connecting pipe section (11).

5. A gas pipeline connection structure for a household, comprising a main gas pipe (2), an inlet pipe (3), and a valve body (4); wherein the inlet end and outlet end of the valve body (4) are respectively connected to an inlet flange (5) and an outlet flange (6); characterized in that: The gas pipeline connection structure further includes two S-type fittings as described in any one of claims 1-4; one of the S-type fittings has a crimping socket (121) fitted onto the outside of the outlet end of the gas main pipe (2) and crimped and sealed circumferentially with the outlet end of the gas main pipe (2) by a crimping sealing assembly (13); one of the S-type fittings has a reduced diameter portion (14) inserted into the inlet end of the inlet flange (5) and crimped and sealed circumferentially with the inlet end of the inlet flange (5); the other S-type fitting has a crimping socket (121) fitted onto the outside of the inlet end of the gas pipeline (3) and crimped and sealed circumferentially with the inlet end of the gas pipeline (3) by a crimping sealing assembly (13); the other S-type fitting has a reduced diameter portion (14) inserted into the outlet end of the outlet flange (6) and crimped and sealed circumferentially with the outlet end of the outlet flange (6).

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