Three-way connector for natural gas pipeline

Abstract

The utility model relates to the technical field of pipeline joints, in particular to a three-way joint for a natural gas pipeline, which comprises a gas inlet pipe and two gas outlet pipes connected to the end parts of the gas inlet pipe, and a gas inlet groove is formed in the gas inlet pipe and is communicated with a gas outlet groove formed in the gas outlet pipe; the control shaft is rotationally connected to the air outlet pipe, the position, extending into the air outlet groove, of the end of the control shaft is fixedly connected with an installation ring, connecting films are arranged on the two sides of the installation ring, a cavity is formed between the middles of the two connecting films, and the annular piece is arranged at the end of the air outlet pipe in a sleeving mode; the annular groove is formed in the circular ring piece, and a through hole connected with the interior of the cavity is formed in the control shaft. Through the arrangement of the mounting ring and the connecting films located on the two sides of the mounting ring, in the on-off adjusting process of the three-way connector, the sealing performance of the connecting position of the connector can be effectively guaranteed through the arrangement of the circular ring piece, and leakage of natural gas is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint technology, specifically to a tee joint for natural gas pipelines. Background Technology

[0002] A tee fitting is a commonly used connector in pipeline connections, consisting of three pipe connections. A typical tee fitting uses a fixed connection method to connect three pipes in different directions. However, in natural gas pipelines, tee fittings often require the gas passage in one of the pipes to be closed. To achieve this, an external control valve is commonly used, which is costly. Furthermore, when the gas pressure inside the pipeline remains constant, closing one pipe increases the gas velocity in the other, potentially leading to gas leakage at the connection point. Therefore, we propose a tee fitting for natural gas pipelines. Utility Model Content

[0003] Technical problems to be solved

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a tee connector for natural gas pipelines. This effectively solves the problem that existing tee connectors used in natural gas pipelines require the gas passage in one of the pipelines to be closed during actual use. To achieve this function, the common method is to use an external control valve, which is costly. Furthermore, when the gas pressure in the pipeline remains constant, closing one pipeline will increase the gas flow rate in the other pipeline, potentially leading to gas leakage at the connection point.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a tee connector for natural gas pipelines, including an inlet pipe and two outlet pipes connected to the end of the inlet pipe. An inlet groove is provided inside the inlet pipe, which is in communication with the outlet groove provided inside the outlet pipe.

[0008] In addition, a control shaft rotatably connected to the air outlet pipe is provided. The end of the control shaft extends into the air outlet groove and is fixedly connected to an installation ring. Connecting membranes are provided on both sides of the installation ring, and a chamber is formed between the middle of the two connecting membranes. It also includes a circular ring sleeved at the end of the air outlet pipe.

[0009] In addition, an annular groove is provided inside the ring component, and a through hole is provided on the control shaft to maintain connection with the interior of the chamber. The through hole is connected to the annular groove through a connecting groove provided inside the air outlet pipe.

[0010] Furthermore, the control shaft is rotatably connected to the air outlet pipe, and a through hole is provided on the control shaft at the position where it connects to the air outlet pipe. When the control shaft rotates and the control mounting ring blocks the air outlet groove, the through hole remains connected to the connecting groove.

[0011] Furthermore, it also includes an installation groove formed on the upper end of the inner wall of the air intake groove, an electromagnetic ring provided on the inner wall of the installation groove, the electromagnetic ring being energized when the control shaft rotates, an annular ring adhered to the inner wall of the air intake groove, the annular ring being able to separate the installation groove from the air intake groove, and multiple magnetic sheets provided on the inner wall of the annular ring; and a sealing bladder fitted at the end of the air intake pipe, the sealing bladder being in communication with the inside of the installation groove.

[0012] Furthermore, it also includes multiple connecting grooves evenly arranged in a ring shape on the inner wall of the intake pipe, which are used to connect the inside of the sealing bladder and the inside of the mounting groove.

[0013] Furthermore, a rubber ring is provided on the outer circumference of the mounting ring. The outer wall of the rubber ring is interference-fitted with the inner wall of the air outlet groove. When the control shaft rotates 90°, the outer wall of the rubber ring contacts the inner wall of the air outlet groove.

[0014] Beneficial effects

[0015] The technical solution provided by this utility model, compared with the known public technology, has the following advantages:

[0016] Beneficial effects:

[0017] This invention, through the installation ring and the connecting membranes located on both sides, effectively ensures the sealing of the joint connection during the on / off adjustment of the tee connector, thereby effectively preventing the leakage of natural gas. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the tee connector of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall exploded structure of the tee connector of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the annular ring of this utility model when it is separated from the intake pipe;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the air intake pipe of this utility model;

[0023] Figure 5 This is an exploded structural diagram of the control shaft of this utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the ring component of this utility model.

[0025] The labels in the diagram represent:

[0026] 100. Intake pipe; 101. Intake slot; 102. Mounting slot; 103. Connecting slot; 110. Sealing bladder;

[0027] 200. Vent pipe; 201. Vent slot; 202. Connecting slot;

[0028] 300, Control shaft; 301, Through hole; 310, Mounting ring; 320, Connecting diaphragm;

[0029] 400. Circular part; 401. Annular groove;

[0030] 500, Annular ring; 510, Magnetic sheet. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Example: Refer to Appendix Figure 1-6 As shown, a tee fitting for a natural gas pipeline includes an inlet pipe 100 and two outlet pipes 200 connected to the end of the inlet pipe 100. It can be understood that in this application, the inlet pipe 100 is connected to the source direction of the external natural gas. In actual use, when it is necessary to divert the natural gas in the main pipeline, the tee fitting in this application will be used. Specifically, an inlet groove 101 is provided inside the inlet pipe 100, which is connected to the outlet groove 201 inside the outlet pipe 200.

[0034] Furthermore, in order to accommodate various usage scenarios, it is necessary to close one of the three connectors, that is, as mentioned above, one of the air outlet pipes 200 needs to be blocked while maintaining the connection between the other air outlet pipe 200 and the air inlet pipe 100. Specifically, this application also includes a control shaft 300 rotatably connected to the air outlet pipe 200. The end of the control shaft 300 extends into the air outlet groove 201 and is fixedly connected to an installation ring 310. Connecting membranes 320 are provided on both sides of the installation ring 310, and a chamber is formed between the middle of the two connecting membranes 320. It also includes a circular ring 400 sleeved at the end of the air outlet pipe 200.

[0035] In the closing mechanism, through the rotational connection between the control shaft 300 and the vent pipe 200, the rotation of the control shaft 300 will synchronously drive the mounting ring 310, which is fixedly connected to the control shaft 300, to rotate. The connecting membranes 320 on both sides of the outer wall of the mounting ring 310 will effectively seal the vent groove 201, thereby effectively blocking one of the vent pipes 200.

[0036] It should be noted that when the control shaft 300 rotates, the intake pipe 100 is still connected to the intake end of the natural gas. During the gradual closing process, the gas flow rate in the corresponding outlet groove 201 of the outlet pipe 200 will increase. At this time, the pressure on both sides of the connecting membrane 320 is low. At this time, the chamber located in the middle of the two connecting membranes 320 will gradually expand, thereby assisting the rapid sealing of the outlet pipe 200.

[0037] Furthermore, in this application, a rubber ring is provided on the outer circumferential wall of the mounting ring 310. The outer wall of the rubber ring is interference-fitted with the inner wall of the air outlet groove 201. When the control shaft 300 rotates 90°, the outer wall of the rubber ring contacts the inner wall of the air outlet groove 201. After the control shaft 300 has rotated, the rubber ring on the outer wall of the mounting ring 310 will be in close contact with the inner wall of the air outlet groove 201, thereby achieving the separation between the air inlet groove 101 and the air outlet groove 201.

[0038] Furthermore, this application also includes an annular groove 401 located inside the annular component 400, and a through hole 301 connected to the interior of the cavity on the control shaft 300. The through hole 301 is connected to the annular groove 401 through a connecting groove 202 located inside the vent pipe 200. The control shaft 300 is rotatably connected to the vent pipe 200, and the through hole 301 on the control shaft 300 is located at the position connected to the vent pipe 200. When the control shaft 300 rotates and the control mounting ring 310 blocks the vent groove 201, the through hole 301 remains connected to the connecting groove 202. During rotation, the corresponding through hole 301 will connect with the connecting groove 202, and the connecting groove 202 will maintain a connection with the inside of the annular groove 401. At this time, the gas in the air inlet annular groove 401 will increase, thereby expanding it and ensuring the sealing between the outlet pipe 200 and the external connecting flange. This effectively ensures the sealing of the outlet pipe 200 port and prevents the natural gas in the outlet groove 201 from overflowing into the external environment.

[0039] Furthermore, this application also includes a mounting groove 102 formed on the upper end of the inner wall of the air intake groove 101. An electromagnetic ring is provided on the inner wall of the mounting groove 102. When the control shaft 300 rotates, the electromagnetic ring is energized, and at this time the electromagnetic ring will magnetically attract the magnetic sheet 510. It also includes an annular ring 500 adhered to the inner wall of the air intake groove 101. The annular ring 500 can isolate the mounting groove 102 from the air intake groove 101. Multiple magnetic sheets 510 are provided on the inner wall of the annular ring 500. It also includes a sealing bladder 110 sleeved at the end of the air intake pipe 100. The sealing bladder 110 is in communication with the inside of the mounting groove 102.

[0040] Specifically, when the control shaft 300 in the vent pipe 200 rotates to seal the vent groove 201, the corresponding electromagnetic ring will be magnetically attracted to the magnetic sheet 510, thereby compressing the gas inside the mounting groove 102. It should be noted that when one of the vent pipes 200 is closed, with the gas flow rate in the corresponding inlet pipe 100 remaining unchanged, the mounting groove 102 set at the connection is first compressed, thereby increasing the diameter of the inlet groove 101. At this time, the gas flow rate can be slowed down, and turbulence is generated at this position, thereby reducing the pressure of the control shaft 300 rotation and ensuring the smooth sealing of the vent pipe 200.

[0041] Furthermore, to ensure the sealing performance of the end of the intake pipe 100 when the exhaust pipe 200 is blocked, this application also includes a plurality of connecting grooves 103 uniformly formed in a ring on the inner wall of the intake pipe 100. The connecting grooves 103 are used to connect the inside of the sealing bladder 110 and the inside of the mounting groove 102. It should be noted that when the space inside the mounting groove 102 is compressed, the gas inside it will enter the inside of the sealing bladder 110 through the connecting grooves 103. In actual use, a flange is connected to the end of the intake pipe 100, and the sealing bladder 110 is located at the flange and the end of the intake pipe 100. When the gas enters the inside of the sealing bladder 110, it will expand, thereby increasing the sealing performance between the external flange and the end of the intake pipe 100.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tee fitting for natural gas pipelines, characterized in that, include: An air intake pipe (100) and two air outlet pipes (200) connected to the end of the air intake pipe (100) are provided with an air intake groove (101) inside the air intake pipe (100), which is in communication with the air outlet groove (201) inside the air outlet pipe (200); In addition, a control shaft (300) is rotatably connected to the air outlet pipe (200), and an installation ring (310) is fixedly connected to the end of the control shaft (300) extending into the air outlet groove (201). Connecting membranes (320) are provided on both sides of the installation ring (310), and a chamber is formed between the middle of the two connecting membranes (320). It also includes a circular ring (400) sleeved at the end of the air outlet pipe (200). In addition, an annular groove (401) is provided inside the annular component (400), and a through hole (301) is provided on the control shaft (300) to maintain connection with the interior of the chamber. The through hole (301) is connected to the annular groove (401) through a connecting groove (202) provided inside the air outlet pipe (200).

2. A tee fitting for natural gas pipelines according to claim 1, characterized in that, The control shaft (300) is rotatably connected to the air outlet pipe (200), and a through hole (301) is provided on the control shaft (300) at the position where it is connected to the air outlet pipe (200). When the control shaft (300) rotates and the control mounting ring (310) blocks the air outlet groove (201), the through hole (301) and the connecting groove (202) remain connected.

3. A tee fitting for natural gas pipelines according to claim 2, characterized in that, It also includes a mounting groove (102) opened on the upper end of the inner wall of the air intake groove (101). An electromagnetic ring is provided on the inner wall of the mounting groove (102). When the control shaft (300) rotates, the electromagnetic ring is energized. It also includes an annular ring (500) adhered to the inner wall of the air intake groove (101). The annular ring (500) can separate the mounting groove (102) from the air intake groove (101). Multiple magnetic sheets (510) are provided on the inner wall of the annular ring (500). And a sealing bladder (110) fitted at the end of the air intake pipe (100), the sealing bladder (110) being in communication with the inside of the mounting groove (102).

4. A tee fitting for natural gas pipelines according to claim 3, characterized in that, It also includes multiple connecting grooves (103) that are evenly arranged in a ring on the inner wall of the air intake pipe (100). The connecting grooves (103) are used to connect the inside of the sealing bag (110) and the inside of the mounting groove (102).

5. A tee fitting for natural gas pipelines according to claim 4, characterized in that, The outer circumferential wall of the mounting ring (310) is provided with a rubber ring. The outer wall of the rubber ring is interference-fitted with the inner wall of the air outlet groove (201). When the control shaft (300) rotates 90°, the outer wall of the rubber ring contacts the inner wall of the air outlet groove (201).

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