Anti-falling gas pipe connector
By adopting the design of movable nuts and torsion springs in the gas pipe interface, combined with the limit block and friction ring mechanism, the problem of loosening of the traditional gas pipe interface in the vibrating environment is solved, which improves sealing and reliability, and enhances the flexibility of use and maintenance.
Patent Information
- Application Number
- CN202421988256.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-16
AI Technical Summary
Traditional gas pipe interfaces can easily cause the movable nut to loosen during long-term use or vibration environments, affecting the sealing, leading to gas leakage, and causing safety hazards.
An anti-decompression pipe interface is designed, and the movable nut is used to cooperate with the torsion spring of the connecting pipe joint. Through the limit block and friction ring mechanism, the elastic potential energy of the torsion spring is stored to ensure that the movable nut is tightened and avoid loosening.
It effectively avoids loosening of the movable nut and the connecting pipe joint, improves the sealing and reliability of the gas pipe interface, and improves the flexibility of use and maintenance.
Smart Images
Figure CN222836454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas pipeline connection devices, in particular to an anti-detachment gas pipe interface. Background Art
[0002] The gas pipe is a special pipeline for transporting gaseous fuels such as liquefied petroleum gas, artificial coal gas, and natural gas. During the use of the gas pipe, a gas pipe interface is required to connect the pipeline of the gas pipe. The existing gas pipe interface usually includes two parts: a gas pipe joint and a connecting pipe joint. One side of the outer wall of the connecting pipe joint is provided with an external thread. The gas pipe joint is installed and fixed by sleeve-fitting with the connecting pipe through a movable nut, thereby completing the connection between the gas pipe and the connecting pipe.
[0003] However, the gas pipe joint and the connecting pipe joint of the traditional gas pipe interface are locked only by the threaded sleeve of the movable nut on the outer wall of the connecting pipe joint. After the gas pipe interface has been used for a long time, or the gas pipe interface has been in a disturbed working environment for a long time, for example, the pulsation of the airflow in the gas pipeline causes the gas pipe to vibrate, and the vibration of the power equipment is transmitted to the gas delivery pipe. It is inevitable that the movable nut will loosen with the connecting pipe joint, thereby affecting the sealing of the gas pipe interface, easily causing gas leakage and posing a safety hazard. Utility Model Content
[0004] In view of the shortcomings of the existing gas pipe interface mentioned in the background technology during use, the utility model provides an anti-loosening gas pipe interface, which has the advantages of preventing loosening and flexible use, and solves the technical problems raised in the above background technology.
[0005] The utility model provides the following technical solution: an anti-detachment gas pipe interface, comprising a gas pipe joint and a connecting pipe joint, the outer wall of the gas pipe joint is rotatably sleeved with a movable nut that cooperates with the connecting pipe joint, the inner side of the movable nut is movably provided with a sealing gasket for sealing, the outer side of the connecting pipe joint is movably sleeved with a torsion spring for providing a tightening torque to the movable nut, and one end of the movable nut is fixedly connected with a fixing ring for fixing the torsion spring.
[0006] An adjusting nut for fixing the torsion spring is slidably sleeved on the outer side of the connecting pipe joint, and the threaded tightening direction of the movable nut relative to the connecting pipe joint is opposite to the torsion direction of the torsion spring.
[0007] Preferably, it also includes four limit blocks which cooperate with each other to limit the positions of the spring heads at both ends of the torsion spring, and the limit blocks cooperate with each other to be fixedly connected with the adjusting nut and the fixing ring respectively.
[0008] Preferably, the limit blocks are arranged in pairs and in parallel, and the length of the limit blocks in the axial direction of the gas pipe joint is greater than the spring wire diameter of the torsion spring.
[0009] Preferably, one of the two matching limit blocks is threadedly sleeved with a limit screw for limiting the spring heads at both ends of the torsion spring.
[0010] Preferably, a threaded sleeve for limiting the displacement of the torsion spring is fixedly sleeved on the outer wall of the connecting pipe joint, and the inner diameter of the fixing ring is larger than the outer diameter of the threaded sleeve.
[0011] Preferably, the threaded sleeve is threadedly connected to the adjusting nut, a No. 1 friction ring is fixedly connected to one side of the threaded sleeve, a No. 2 friction ring adapted to the No. 1 friction ring is fixedly provided on the inner side of the adjusting nut, and the rotation direction of the screwing-in of the adjusting nut is consistent with the torsion direction of the torsion spring.
[0012] The utility model has the following beneficial effects:
[0013] 1. The utility model limits the spring heads at both ends of the torsion spring by the cooperation of two limiting blocks, and further limits the position by the cooperation of limiting screws. After the movable nut is screwed into the connecting pipe joint, the adjusting nut drives one end of the torsion spring to rotate, and cooperates with the threaded sleeve to make the torsion spring store elastic potential energy until the No. 1 friction ring and the No. 2 friction ring are squeezed against each other, and the adjusting nut itself is locked. The movable nut is driven by the torsion spring, so that the movable nut has a tendency to rotate along the tightening direction of the connecting pipe joint, thereby preventing the movable nut from loosening with the connecting pipe, and improving the reliability of the gas pipe interface without affecting the gas pipe joint and the connecting pipe joint.
[0014] 2. The utility model changes the position of the limit block connected to the adjusting nut after the connecting pipe joint and the gas pipe joint are connected and sealed by rotating the adjusting nut, so that the position of the limit block connected to the adjusting nut is adapted to the position of the limit block corresponding to the fixed ring after the movable nut rotates. At the same time, the spring head of the torsion spring slides relative to the limit block during the rotation of the adjusting nut, thereby improving the flexibility of the gas pipe interface without affecting the rotation of the spring head at one end of the torsion spring. The torsion spring can be removed and replaced separately, thereby improving the convenience of maintenance of the gas pipe interface. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the overall structure separation state;
[0017] Figure 3 For this utility model Figure 2 A magnified view of the structure at A;
[0018] Figure 4 For this utility model Figure 2Schematic diagram of partial structural cross-section.
[0019] In the figure: 1. gas pipe joint; 2. connecting pipe joint; 3. movable nut; 4. adjusting nut; 5. fixing ring; 6. threaded sleeve; 7. torsion spring; 8. limit block; 9. limit screw; 10. No. 1 friction ring; 11. No. 2 friction ring; 12. sealing gasket. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1 , Figure 2 and Figure 4 A gas pipe interface with an anti-dropout function comprises a gas pipe joint 1 and a connecting pipe joint 2. A positioning ring for driving the gas pipe joint 1 to move is fixedly sleeved near one end of the outer wall of the gas pipe joint 1. A movable nut 3 that cooperates with the connecting pipe joint 2 is rotatably sleeved on the outer wall of the gas pipe joint 1. An annular groove that matches the positioning ring is formed on one side of the inner wall of the movable nut 3. The positioning ring is embedded in the annular groove so that the movable nut 3 can rotate relative to the gas pipe joint 1 while driving the gas pipe joint 1 to move in the axial direction of the gas pipe joint 1.
[0022] An external thread is provided at one end of the outer wall of the connecting pipe joint 2, and an internal thread adapted to the external thread of the connecting pipe joint 2 is provided on the inner wall of the movable nut 3, so that the movable nut 3 can be sleeved on the connecting pipe joint 2, and as the movable nut 3 rotates in the external thread area of the connecting pipe joint 2, the gas pipe joint 1 is driven to approach the connecting pipe joint 2, and a sealing gasket 12 for sealing is movably provided on the inner side of the movable nut 3. When the gas pipe joint 1 and the connecting pipe joint 2 are approached, the sealing gasket 12 is jointly extruded to complete the sealing of the connection between the gas pipe joint 1 and the connecting pipe joint 2.
[0023] See also Figure 1-Figure 4The outer side of the connecting pipe joint 2 is movably sleeved with a torsion spring 7 for providing a tightening torque to the movable nut 3, and one end of the movable nut 3 is fixedly connected to a fixing ring 5 for fixing the torsion spring 7. The outer wall of the connecting pipe joint 2 is fixedly sleeved with a threaded sleeve 6 for limiting the displacement of the torsion spring 7. The outer diameter of the threaded sleeve 6 is adapted to the diameter of the annular through hole of the torsion spring 7. It also includes four limit blocks 8 that are matched in pairs to limit the positions of the spring heads at both ends of the torsion spring 7. The limit blocks 8 are arranged in parallel in pairs. The outer side of the connecting pipe joint 2 is slidingly sleeved with an adjusting nut 4 for fixing the torsion spring 7. The limit blocks 8 are matched in pairs to be fixedly connected to the adjusting nut 4 and the fixing ring 5 respectively. The spring heads at both ends of the torsion spring 7 can be respectively embedded between the limit blocks 8 connected to the adjusting nut 4 and the fixing ring 5.
[0024] After the movable nut 3 and the connecting pipe joint 2 complete the connection and sealing, the adjusting nut 4 is rotated relative to the fixing ring 5 along the torsion direction of the torsion spring 7 storing the elastic potential energy, so that the torsion spring 7 stores the elastic potential energy for keeping the gas pipe joint 1 tight, and the threaded tightening direction of the movable nut 3 relative to the connecting pipe joint 2 is opposite to the torsion direction of the torsion spring 7, so that the reset direction of the torsion spring 7 releasing the elastic potential energy is the same as the tightening direction of the movable nut 3, and then the torsion spring 7 is used to make the movable nut 3 always have a rotation tendency along the direction of tightening the gas pipe joint 1, so as to avoid the loosening of the movable nut 3, and the threaded sleeve 6 is threadedly sleeved with the adjusting nut 4, and the threaded sleeve 6 can screw itself in while driving the torsion spring 7 to store the elastic potential energy.
[0025] A No. 1 friction ring 10 is fixedly connected to one side of the threaded sleeve 6, and a No. 2 friction ring 11 adapted to the No. 1 friction ring 10 is fixedly arranged on the inner side of the adjusting nut 4. The rotation direction of the screwing-in of the adjusting nut 4 is consistent with the torsion direction of the torsion spring 7. When the adjusting nut 4 is screwed in, the No. 2 friction ring 11 is driven in at the same time, so that after the adjusting nut 4 drives the torsion spring 7 to store elastic potential energy, the No. 1 friction ring 10 and the No. 2 friction ring 11 are squeezed against each other, and the friction between the No. 1 friction ring 10 and the No. 2 friction ring 11 and the threaded connection between the adjusting nut 4 and the threaded sleeve 6 are used to lock the adjusting nut 4 after it is rotated.
[0026] The length of the limit block 8 in the axial direction of the gas pipe joint 1 is greater than the spring wire diameter of the torsion spring 7, so that the spring heads at both ends of the torsion spring 7 can move relative to the limit block 8 in the axial direction of the gas pipe joint 1, thereby preventing the torsion spring 7 from being compressed due to the reduction of the spacing between the adjusting nut 4 and the fixing ring 5 due to the screwing in of the adjusting nut 4, affecting the adjustment nut to drive the spring head at one end of the torsion spring 7 to rotate, thereby improving the reliability of the use of the gas pipe interface. One of the two matching limit blocks 8 is threadedly sleeved with a limit screw 9 for limiting the spring heads at both ends of the torsion spring 7. By rotating the limit screw 9, the limit screw 9 can be screwed in until it abuts against the limit block 8, and cooperates with the limit block 8 to surround the spring head of the torsion spring 7, thereby preventing the spring head of the torsion spring 7 from detaching from the limit block 8. The torsion spring 7 of the gas pipe joint 1 can be freely installed and removed, which is convenient for the separate replacement of the torsion spring 7.
[0027] The usage (working principle) of the utility model is as follows:
[0028] Thread the movable nut 3 onto the connecting pipe joint 2, rotate the movable nut 3 to bring the gas pipe joint 1 close to the connecting pipe joint 2, until the gas pipe joint 1 cooperates with the connecting pipe joint 2 to squeeze the sealing gasket 12, and embed the spring head at one end of the torsion spring 7 between the two matching limit blocks 8 connected to the fixing ring 5, select the corresponding limit screw 9 to limit the spring head of the torsion spring 7, and rotate the adjusting nut 4 to make the position of the limit block 8 connected to the adjusting nut 4 correspond to the spring head at the free end of the torsion spring 7 and embed the spring head between the limit blocks 8.
[0029] The spring heads at both ends of the torsion spring 7 can be fixed when needed without affecting the screwing-in of the movable nut 3, and the fixing position can be adjusted according to the positions of the spring heads at both ends of the torsion spring 7, thereby improving the flexibility of the use of the gas pipe interface. The adjusting nut 4 is screwed in, and the adjusting nut 4 drives the spring head of the corresponding torsion spring 7 to rotate until the No. 1 friction ring 10 and the No. 2 friction ring 11 are squeezed against each other, completing the storage of the elastic potential energy of the torsion spring 7. The torsion spring 7 can drive the movable nut 3 to make the movable nut 3 tend to move in the tightening direction, thereby preventing the movable nut 3 from loosening relative to the connecting pipe joint 2.
Claims
1. An anti-drop gas pipe interface, comprising a gas pipe joint (1) and a connecting pipe joint (2), wherein the outer wall of the gas pipe joint (1) is rotatably sleeved with a movable nut (3) that cooperates with the connecting pipe joint (2), and a sealing gasket (12) for sealing is movably provided on the inner side of the movable nut (3), characterized in that: The outer side of the connecting pipe joint (2) is movably sleeved with a torsion spring (7) for providing a tightening torque to the movable nut (3), and one end of the movable nut (3) is fixedly connected with a fixing ring (5) for fixing the torsion spring (7); An adjusting nut (4) for fixing a torsion spring (7) is slidably sleeved on the outer side of the connecting pipe joint (2), and the threaded fastening direction of the movable nut (3) relative to the connecting pipe joint (2) is opposite to the torsion direction of the torsion spring (7).
2. The anti-drop gas pipe interface according to claim 1, characterized in that: It also includes four limit blocks (8) which cooperate with each other to limit the positions of the spring heads at both ends of the torsion spring (7); the limit blocks (8) cooperate with each other to be fixedly connected to the adjusting nut (4) and the fixing ring (5) respectively.
3. The anti-drop gas pipe interface according to claim 2, characterized in that: The limit blocks (8) are arranged in pairs in parallel, and the length of the limit blocks (8) in the axial direction of the gas pipe joint (1) is greater than the spring wire diameter of the torsion spring (7).
4. The anti-drop gas pipe interface according to claim 2, characterized in that: One of the two matching limit blocks (8) is threadedly sleeved with a limit screw (9) for limiting the spring heads at both ends of the torsion spring (7).
5. The anti-drop gas pipe interface according to claim 1, characterized in that: A threaded sleeve (6) for limiting the displacement of a torsion spring (7) is fixedly sleeved on the outer wall of the connecting pipe joint (2), and the inner diameter of the fixing ring (5) is larger than the outer diameter of the threaded sleeve (6).
6. The anti-drop gas pipe interface according to claim 5, characterized in that: The threaded sleeve (6) is threadedly sleeved with the adjusting nut (4); a first friction ring (10) is fixedly connected to one side of the threaded sleeve (6); a second friction ring (11) adapted to the first friction ring (10) is fixedly arranged on the inner side of the adjusting nut (4); and the screwing-in rotation direction of the adjusting nut (4) is consistent with the torsion direction of the torsion spring (7).