An insulating joint for gas pipeline transportation

Abstract

This utility model discloses an insulating joint for gas pipeline transportation, including a male joint and a female joint, which are capable of mating. A sealing ring for sealing is fitted over the male joint and positioned between the male and female joints. A retaining ring is also provided on the male joint, with a first isolation pad on one side and a second isolation pad on the other side of the male joint. This utility model enhances the sealing performance of the insulating joint by providing a sealing ring with multiple protrusions between the male and female joints.

Description

Technical Field

[0001] This utility model relates to the field of accessories for gas pipeline transportation, specifically an insulating joint for gas pipeline transportation. Background Technology

[0002] Gas pipelines, as a core infrastructure for urban energy transmission, are widely used in urban residential gas supply, industrial gas supply, and long-distance pipeline projects. Since gas pipelines are mostly made of metal materials such as carbon steel and alloy steel, and some gas pipelines typically run into homes, they are often connected to gas water heaters. Some gas water heaters require electricity to operate. If a water heater malfunctions, current can flow into the gas pipeline, causing it to become electrified. In real life, gas pipelines are also prone to becoming electrified due to the influence of surrounding power lines. To address the safety hazards caused by current flowing through electrified gas pipelines, insulated joints have been developed.

[0003] Existing insulating joints mostly use a single-seal structure. During the operation of gas pipelines, pressure fluctuations and repeated pressure impacts can easily cause plastic deformation of the seals, increasing the sealing gap and leading to gas leakage. Utility Model Content

[0004] The purpose of this utility model is to provide an insulating joint for gas pipeline transportation, which enhances the sealing performance of the insulating joint by providing a sealing ring between the male and female joints, with multiple protrusions on the sealing ring.

[0005] To address the existing technical problems, this utility model provides an insulating connector for gas pipeline transportation, including a male connector and a female connector, which can be mated together. The male connector is fitted with a sealing ring for sealing, and the sealing ring is disposed between the male connector and the female connector. The male connector is also provided with a retaining ring, and a first isolation pad is provided on one side of the retaining ring, and a second isolation pad is provided on the other side of the male connector.

[0006] Preferably, a second mounting groove capable of accommodating the first isolation pad is provided on one side of the retaining ring, and a first mounting groove capable of accommodating the second isolation pad is provided on the other side of the retaining ring. When the male connector is inserted into the female connector, the end face of the female connector can compress the first isolation pad.

[0007] Preferably, the male connector is fitted with a fixing nut, and the surface of the female connector is provided with an external thread near the male connector. When the male connector is inserted into the female connector, the internal thread in the fixing nut engages with the external thread, and the fixing nut can compress the second isolation pad.

[0008] Preferably, the male connector has several annular first slots near the female connector, and the female connector has a second slot corresponding to the first slots near the male connector.

[0009] Preferably, the inner wall of the first isolation pad between the male and female connectors is provided with a plurality of sealing protrusions that can be locked in the first slot, and the outer wall of the first isolation pad is provided with a plurality of sealing protrusions that can be locked in the second slot.

[0010] Preferably, the outer side of the fixing nut is also provided with a grounding reserved interface for connecting wires.

[0011] Preferably, the grounding reserved interface includes a support member fixed on a fixing nut, and a pressure plate is connected to the support member. A fixing bolt that can fix the pressure plate on the support member is also provided between the support member and the pressure plate. A through groove for the wire to pass through is formed between the support member and the pressure plate.

[0012] Preferably, the pressure plate is provided with an adjusting bolt that is rotatably threaded, and one end of the adjusting bolt is rotatably connected to a pressure member.

[0013] The advantages of this utility model compared to the prior art are: In this application, the male connector can be inserted into the female connector for assembly. The outer peripheral wall of the male connector has several first grooves, and the corresponding inner wall of the female connector has several second grooves. To improve the assembly performance of the male and female connectors, a sealing ring is installed between them. The outer peripheral surface of the sealing ring has an integrally formed protrusion structure that matches the second grooves, and the inner peripheral surface has an integrally formed protrusion structure that matches the first grooves. Through the interlocking of the protrusions and grooves, multiple sealing contacts can be formed in the radial direction, significantly enhancing the sealing performance between the male and female connectors. Simultaneously, the sealing ring is made of rubber, which, in addition to its sealing function, also possesses good insulation properties, capable of blocking the current path between the male and female connectors, achieving electrical isolation between them. To further enhance the overall insulation performance of the connector, a first isolation pad and a second isolation pad are respectively installed at both ends of the retaining ring. After the male connector is inserted into the female connector and assembled, the end of the female connector axially compresses the first insulating gasket, causing it to tightly fill the space between the female connector and the retaining ring. This not only prevents direct contact between the two, thus blocking the current conduction path, but also further enhances the axial sealing effect through compression deformation, effectively preventing gas leakage. Furthermore, the second insulating gasket installed between the fixing nut and the retaining ring keeps them in a non-contact state, thereby blocking the current path between the fixing nut and the male connector, further improving the overall insulation system and ensuring that the connector meets electrical safety requirements while possessing reliable sealing performance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an insulating joint for gas pipeline transportation according to this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of an insulating joint for gas pipeline transportation according to this utility model.

[0016] Figure 3 This is a first exploded structural diagram of an insulating joint for gas pipeline transportation according to this utility model.

[0017] Figure 4 This is a second exploded structural diagram of an insulating joint for gas pipeline transportation according to this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the male connector of an insulating joint for gas pipeline transportation according to this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the female connector of an insulating joint for gas pipeline transportation according to this utility model.

[0020] The following are the labels in the diagram: 1. Male connector; 11. Retaining ring; 111. First mounting groove; 112. Second mounting groove; 12. First slot; 2. Female connector; 21. Second slot; 3. Fixing nut; 31. Grounding reserved interface; 311. Support component; 312. Pressure plate; 313. Fixing bolt; 314. Pressure component; 315. Adjusting bolt; 4. Sealing ring; 5. First isolation pad; 6. Second isolation pad. Detailed Implementation

[0021] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] Reference Figures 1-6As shown, this utility model provides an insulating connector for gas pipeline transportation, including a male connector 1 and a female connector 2. The male connector 1 and the female connector 2 can be mated together. A sealing ring 4 for sealing is fitted on the outside of the male connector 1. The male connector 1 and the female connector 2 are the core components of the insulating connector, together forming the connection structure of the gas pipeline: the male connector 1 serves as the "insertion end" and the female connector 2 serves as the "receiving end". Through the "male connector insertion into female connector" method, the physical connection of the two gas pipeline sections and the conduction of the gas passage are realized, which is the basic carrier for the normal transportation of gas. Furthermore, the sealing ring 4 is set between the male connector 1 and the female connector 2. When the male connector is inserted into the female connector, the sealing ring 4 is squeezed into the mating gap between the two, filling the gap space and preventing gas from leaking outward from the gap at the joint, ensuring the safety of gas pipeline transportation. The male connector 1 is also provided with a retaining ring 11, and a first isolation pad 5 is provided on one side of the retaining ring 11, and a second isolation pad 6 is provided on the other side of the male connector 1. A second mounting groove 112 is provided on one side of the retaining ring 11 to accommodate the first isolation pad 5, and a first mounting groove 111 is provided on the other side of the retaining ring 11 to accommodate the second isolation pad 6. When the male connector 1 is inserted into the female connector 2, the end face of the female connector 2 can squeeze the first isolation pad 5.

[0023] First, the sealing ring 4 is fitted onto the designated position on the outside of the male connector 1. Then, the first isolation pad 5 is embedded into the second mounting groove 112 of the retaining ring 11, and the second isolation pad 6 is embedded into the first mounting groove 111 of the retaining ring 11. The pre-assembled male connector 1 is then inserted into the female connector 2. During insertion, the sealing ring 4 on the outside of the male connector 1 is squeezed into the mating gap between the male connector 1 and the female connector 2. The elastic deformation of the sealing ring 4 fills the gap, forming a reliable sealing structure to prevent gas leakage from the connection point. When the male connector 1 is fully inserted into the female connector 2, the end face of the female connector 2 is tightly pressed against the first isolation pad 5 on the retaining ring 11. At this time, the first isolation pad 5 is located between the end face of the female connector 2 and the side of the retaining ring 11, thereby cutting off the electrical conduction path and preventing electrochemical corrosion of different metal parts due to potential difference.

[0024] The male connector 1 is fitted with a fixing nut 3, and the surface of the female connector 2 is provided with an external thread near the male connector 1. When the male connector 1 is inserted into the female connector 2, the internal thread in the fixing nut 3 engages with the external thread, and the fixing nut 3 can compress the second isolation pad 6.

[0025] Tighten the fixing nut 3 on the male connector 1 so that its internal thread gradually engages with the external thread on the surface of the female connector 2. As the fixing nut 3 is tightened, it moves axially toward the mating end along the female connector 2. Its end face gradually presses against the second isolation pad 6 on the retaining ring 11. The axial force generated by the thread engagement firmly "pulls" the male connector 1 toward the female connector 2, keeping the mating state of the male connector 1 and the female connector 2 stable and completely preventing the connector from loosening due to pipeline vibration or gas pressure fluctuations. The second isolation pad 6 is pressed down by the end face of the fixing nut 3 and the side of the retaining ring 11. Both are completely blocked by insulating material, preventing current from flowing between the male connector 1 and the fixing nut 3.

[0026] The male connector 1 has several annular first slots 12 near the female connector 2, and the female connector 2 has a corresponding second slot 21 near the male connector 1. The inner wall of the first isolation pad 5 between the male connector 1 and the female connector 2 has several sealing protrusions that can be engaged in the first slots 12, and the outer wall of the first isolation pad 5 has several sealing protrusions that can be engaged in the second slots 21.

[0027] The sealing protrusion itself is elastic. After being inserted into the slot, it will undergo slight deformation due to compression, and fit tightly against the inner wall of the slot. On the one hand, the cooperation between each protrusion and the slot will form a ring-shaped sealing line. Multiple sets of protrusions on the inner and outer walls can form a "double multi-seal", which greatly improves the sealing performance at the isolation pad. The engagement between the protrusion and the slot does not change the properties of the insulation material. While achieving positioning and sealing, it can still maintain the function of blocking the metal contact between the male connector 1 and the female connector 2.

[0028] The outer side of the fixing nut 3 is also provided with a grounding reserved interface 31 for connecting wires. The grounding reserved interface 31 includes a support member 311 fixed to the fixing nut 3, and a pressure plate 312 is connected to the support member 311. A fixing bolt 313 is provided between the support member 311 and the pressure plate 312 to fix the pressure plate 312 to the support member 311. A through groove for the wire to pass through is formed between the support member 311 and the pressure plate 312. An adjusting bolt 315 is rotatably provided on the pressure plate 312 by means of a thread, and one end of the adjusting bolt 315 is rotatably connected to a pressure member 314.

[0029] Place one end of the grounding wire into the through groove between the support 311 and the pressure plate 312, and turn the adjusting bolt 315 clockwise to move the pressure piece 314 into the through groove until the pressure piece 314 tightly presses the grounding wire, ensuring that the wire, pressure piece 314, and support 311 form a reliable conductive path; connect the other end of the grounding wire to a qualified grounding electrode to complete the grounding circuit construction. If the male connector 1, female connector 2, and fixing nut 3 malfunction, accidental leakage may occur. The current can flow to the ground through the grounding reserved interface 31 and the wire, further improving the safety of the pipeline.

[0030] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An insulating joint for gas pipeline transportation, characterized in that: The device includes a male connector (1) and a female connector (2), which can be connected to each other. The male connector (1) is fitted with a sealing ring (4) for sealing, and the sealing ring (4) is located between the male connector (1) and the female connector (2). The male connector (1) is also provided with a retaining ring (11), and a first isolation pad (5) is provided on one side of the retaining ring (11), and a second isolation pad (6) is provided on the other side of the male connector (1).

2. An insulating joint for gas pipeline transportation according to claim 1, characterized in that: The retaining ring (11) has a second mounting groove (112) on one side that can accommodate the first isolation pad (5), and a first mounting groove (111) on the other side that can accommodate the second isolation pad (6). When the male connector (1) is inserted into the female connector (2), the end face of the female connector (2) can squeeze the first isolation pad (5).

3. An insulating joint for gas pipeline transportation according to claim 1, characterized in that: The male connector (1) is fitted with a fixing nut (3), and the surface of the female connector (2) near the male connector (1) is provided with an external thread. When the male connector (1) is inserted into the female connector (2), the internal thread in the fixing nut (3) engages with the external thread, and the fixing nut (3) can squeeze the second isolation pad (6).

4. An insulating joint for gas pipeline transportation according to claim 3, characterized in that: The male connector (1) has several annular first slots (12) near the female connector (2), and the female connector (2) has a second slot (21) corresponding to the first slots (12) near the male connector (1).

5. An insulating joint for gas pipeline transportation according to claim 4, characterized in that: The inner wall of the first isolation pad (5) between the male connector (1) and the female connector (2) is provided with a number of sealing protrusions that can be locked in the first slot (12), and the outer wall of the first isolation pad (5) is provided with a number of sealing protrusions that can be locked in the second slot (21).

6. An insulating joint for gas pipeline transportation according to claim 3, characterized in that: The outer side of the fixing nut (3) is also provided with a grounding reserved interface (31) for connecting the wire.

7. An insulating joint for gas pipeline transportation according to claim 6, characterized in that: The grounding reserved interface (31) includes a support member (311) fixed on a fixing nut (3), and a pressure plate (312) is connected to the support member (311). A fixing bolt (313) is also provided between the support member (311) and the pressure plate (312) to fix the pressure plate (312) on the support member (311). A through groove for the wire to pass through is formed between the support member (311) and the pressure plate (312).

8. An insulating joint for gas pipeline transportation according to claim 7, characterized in that: The pressure plate (312) is provided with an adjusting bolt (315) that rotates by a thread, and one end of the adjusting bolt (315) is rotatably connected to a pressure member (314).

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