Pipeline gas leak-proof quick connector

Abstract

The utility model relates to a gas quick connector technical field, concretely is a pipeline gas leakproof quick connector, include: the joint main part, the joint main part inside forms the fluid passage that communicates with each other, the upper joint of one end of the fluid passage of joint main part is connected, the upper joint is equipped with the outer thread, is used for through bolt connection external device, the lower joint of the other end of the fluid passage of joint main part is connected, the lower joint is equipped with the internal thread, the lateral communication mouth of the fluid passage of joint main part is connected the side joint, the observation window is the window that is made of transparent material, is embedded in the outer wall surface of joint main part, and with the fluid passage in the joint main part intercommunication.

Description

Technical Field

[0001] This utility model relates to the field of gas quick coupling technology, specifically a pipeline gas leak-proof quick coupling. Background Technology

[0002] Piped gas delivery systems are widely used in industrial manufacturing, energy and chemical industries, and laboratory gas supply. Quick couplings, as key components connecting pipelines to equipment and instruments, directly affect the system's sealing safety and operational reliability. Currently, most common quick couplings use threaded connections, snap-fit ​​types, or ball valve structures. While simple in structure, these have significant shortcomings. Traditional couplings typically rely on a single O-ring or gasket for sealing. Over long-term use, the sealing material is prone to aging and wear, leading to leaks, especially with flammable, explosive, or toxic gases, which can cause serious safety accidents. Furthermore, operators often cannot visually assess the sealing condition of the coupling, relying on experience or specialized tools, which carries the risk of misjudgment due to false connections or seal failure. In addition, traditional couplings have limited functionality; connecting pressure gauges, sensors, and other equipment requires additional tees, elbows, and other fittings, increasing the number of connection points and potential leak points in the system. This not only increases installation complexity but also affects the simplicity of the pipeline layout and ease of maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a quick-connect fitting for preventing gas leakage in pipelines, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A quick-connector for leak-proof gas pipelines includes: a connector body and a transmission pipe. The connector body has interconnected fluid channels. One end of the fluid channel is connected to an upper connector with external threads for bolting external equipment. The other end of the fluid channel is connected to a lower connector with internal threads. A side connector is connected to the lateral connection port of the fluid channel. An observation window, made of transparent material, is embedded in the outer wall of the connector body and communicates with the fluid channel inside the connector body. An indicating mechanism is located inside the connector body and within the visible range of the observation window. The indicating mechanism includes a movable indicating ring that changes position according to the pressure or fluid state within the fluid channel. The indicating ring includes a sealing ring located at the connection between the transmission pipe and the lower connector. A one-way valve is provided inside the upper connector.

[0005] Furthermore, the indicator ring is made of magnetic material or lightweight float material; when there is no pressure or fluid in the fluid channel, the indicator ring is located in the first position; when there is pressure or fluid flow in the fluid channel, the indicator ring moves to the second position under the action of pressure or buoyancy, and is visible through the observation window.

[0006] Furthermore, a first mark for indicating safety and a second mark for indicating warning are provided next to the observation window; when the indicator ring moves to align with the first mark, it indicates that the seal is normal, and when the indicator ring moves to align with the second mark or is not visible, it indicates that there is a leak or a lack of connection.

[0007] Furthermore, the external device connected to the upper connector via the bolt is a pressure gauge, sensor, or pressure relief valve.

[0008] Furthermore, the sealing ring is an O-ring, which is disposed on the threaded interface end face of the lower connector.

[0009] Furthermore, the main body, upper connector, lower connector, and side connector are integrally formed.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By ingeniously transforming the internal sealing status into a visible visual signal through an observation window on the outer wall of the connector body and an internally movable indicator ring, operators can instantly and accurately determine whether the connector is fully connected and whether the seal is effective simply by observing the position of the indicator ring from a distance, without needing specialized tools or guesswork. This fundamentally eliminates major safety accidents caused by false connections or seal failures leading to gas leakage, greatly improving operational safety and reliability.

[0011] 2. The integrated design combines the functions of the upper, lower, and side connectors into a single unit. Users can directly install pressure gauges, sensors, or safety valves on the upper connector without needing to weld tees, elbows, or other fittings onto the pipeline. This integrated design significantly simplifies pipeline layout, reduces the multiple leakage points inherent in traditional multi-component connections, improves the overall system sealing, and saves installation space and costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the connection structure of this utility model; Figure 4 This is a schematic diagram of the top structure of this utility model; In the diagram: 1. Connector body; 2. Upper connector; 3. Lower connector; 4. Observation window; 5. Indicator ring; 6. Bolt; 7. Side connector; 8. Sealing ring; 9. Transmission pipe; 10. Check valve. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example 1, please refer to Figures 1-4 In this embodiment of the present invention, a quick-connect fitting for leak-proof gas pipeline includes: a fitting body 1 and a transmission pipe 9. The fitting body 1 has interconnected fluid channels inside. One end of the fluid channel of the fitting body 1 is connected to an upper fitting 2, which has an external thread for connecting to external equipment via bolts 6. The other end of the fluid channel of the fitting body 1 is connected to a lower fitting 3, which has an internal thread. A side fitting 7 is connected to the lateral connection port of the fluid channel of the fitting body 1. An observation window 4, made of transparent material, is embedded in the outer wall of the fitting body 1 and communicates with the fluid channel inside the fitting body 1. An indicating mechanism is located inside the fitting body 1 and within the visible range of the observation window 4. The indicating mechanism includes a movable indicating ring 5, which changes its position according to the pressure or fluid state within the fluid channel. It includes a sealing ring 8 located at the connection between the transmission pipe 9 and the lower fitting 3. A one-way valve 10 is provided inside the upper fitting 2.

[0015] Specifically, by using an observation window on the outer wall of the connector body and an internally movable indicator ring, the internal sealing status is creatively transformed into a visually visible signal. Operators do not need specialized tools or guesswork; they can instantly and accurately determine whether the connector is fully connected and whether the seal is effective simply by observing the position of the indicator ring from a distance. This fundamentally eliminates major safety accidents caused by false connections or seal failures leading to gas leakage, greatly improving operational safety and reliability.

[0016] like Figure 1 As shown, in this embodiment, the indicator ring 5 is made of magnetic material or lightweight float material; when there is no pressure or fluid in the fluid channel, the indicator ring 5 is located in the first position; when there is pressure or fluid flow in the fluid channel, the indicator ring 5 moves to the second position under the action of pressure or buoyancy, and can be seen through the observation window 4.

[0017] In this embodiment, a first mark for indicating safety and a second mark for indicating warning are provided next to the observation window 4; when the indicator ring 5 moves to align with the first mark, it indicates that the seal is normal; when the indicator ring 5 moves to align with the second mark or is not visible, it indicates that there is a leak or a lack of connection.

[0018] like Figure 1 and Figure 3 As shown, in this embodiment, the external device connected to the upper connector 2 via the bolt 6 is a pressure gauge, sensor, or pressure relief valve.

[0019] In this embodiment, the sealing ring 8 is an O-ring, which is disposed on the threaded interface end face of the lower connector 3.

[0020] like Figure 2 As shown, in this embodiment, the connector body 1, upper connector 2, lower connector 3 and side connector 7 are integrally formed structures.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick-connect fitting for leak-proof gas pipelines, characterized in that, include: The connector body (1) and the transmission pipe (9) have interconnected fluid channels inside the connector body (1). One end of the fluid channel of the connector body (1) is connected to an upper connector (2), which has an external thread for connecting external equipment via bolts (6). The other end of the fluid channel of the connector body (1) is connected to a lower connector (3), which has an internal thread. The lateral connection port of the fluid channel of the connector body (1) is connected to a side connector (7). The observation window (4) is made of transparent material. An indicator mechanism is embedded in the outer wall of the connector body (1) and connected to the fluid channel inside the connector body (1). The indicator mechanism is located inside the connector body (1) and within the visible range of the observation window (4). The indicator mechanism includes a movable indicator ring (5). The indicator ring (5) changes its position according to the pressure or fluid state in the fluid channel. It includes a sealing ring (8) located at the connection between the transmission pipe (9) and the lower connector (3). A one-way valve (10) is provided inside the upper connector (2).

2. The pipeline gas leak-proof quick connector according to claim 1, characterized in that, The indicator ring (5) is made of magnetic material or lightweight float material; when there is no pressure or no fluid in the fluid channel, the indicator ring (5) is located in the first position; when there is pressure or fluid flow in the fluid channel, the indicator ring (5) moves to the second position under the action of pressure or buoyancy and can be seen through the observation window (4).

3. The pipeline gas leak-proof quick connector according to claim 2, characterized in that, Next to the observation window (4) are a first mark for indicating safety and a second mark for indicating warning; when the indicator ring (5) moves to align with the first mark, it indicates that the seal is normal; when the indicator ring (5) moves to align with the second mark or is not visible, it indicates that there is a leak or no connection.

4. The pipeline gas leak-proof quick connector according to claim 1, characterized in that, The external device connected to the upper connector (2) via the bolt (6) is a pressure gauge, sensor, or pressure relief valve.

5. The quick-connect fitting for leak-proof gas pipelines according to claim 1, characterized in that, The sealing ring (8) is an O-ring, which is located on the threaded interface end face of the lower connector (3).

6. The quick-connect fitting for leak-proof gas pipelines according to claim 1, characterized in that, The connector body (1), upper connector (2), lower connector (3) and side connector (7) are integrally formed structures.

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