A joint conversion piece for gas installations

Abstract

The utility model relates to the technical field of conversion joint, disclose a joint conversion spare for gas installation, including conversion joint, plastic pipe spare and steel pipe spare, the conversion joint both ends respectively screw thread connection has plastic pipe spare and steel pipe spare, the conversion joint includes the fixed mechanism for guaranteeing the connection strength, the utility model is based on screw thread connection, completes the preliminary fixation, cooperates the mechanical locking of fixed mechanism, only through pressing the ring, makes the clamping bar embed the card slot, can lock conversion joint, plastic pipe spare and steel pipe spare simultaneously, fundamentally prevents the loosening of screw thread connection because of vibration, thermal expansion and cold shrink etc, realizes the purpose of reinforcing the anti -loosening, does not need wrench, screwdriver etc. tool throughout, reduces the dependence on the skill of installation personnel, is compatible with the screw thread connection standard of conventional pipeline, makes up the defect that simple screw thread connection is easy to loosen, is suitable for pipeline adaptation of multiple specifications.

Description

Technical Field

[0001] This utility model relates to the field of adapter technology, and in particular to an adapter for gas installation. Background Technology

[0002] With the widespread use of natural gas energy, the safety and stability of gas pipeline systems have become crucial for ensuring people's livelihoods and industrial production. As the scope of gas pipeline laying continues to expand, plastic pipes are widely used in indoor gas pipeline laying due to their light weight, corrosion resistance, and convenient construction. Meanwhile, steel pipes, with their advantages of high strength and high temperature resistance, occupy an important position in outdoor main pipelines and high-pressure gas transmission. A connector is a device that connects plastic pipes and steel pipes.

[0003] Traditional adapters rely solely on simple threaded connections to secure pipes. Over long-term use, these connections are highly susceptible to loosening due to external factors. Furthermore, drastic temperature changes can cause thermal expansion and contraction in the pipes, further exacerbating the loosening of the threaded connections and potentially leading to gas leaks. Therefore, a new adapter for gas installation is proposed to address these issues. Utility Model Content

[0004] Given that the existing connector conversion parts rely solely on threaded connections to fix the pipes, and that threaded connections are prone to loosening due to factors such as pipe vibration and thermal expansion and contraction caused by changes in ambient temperature, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a gas installation connector conversion component, including a conversion connector, a plastic pipe fitting and a steel pipe fitting, wherein the two ends of the conversion connector are respectively threaded with the plastic pipe fitting and the steel pipe fitting, and the conversion connector includes a fixing mechanism for ensuring connection strength;

[0006] The surface of the conversion connector is symmetrically provided with sliding grooves, and elongated grooves are symmetrically provided on both sides of the sliding grooves. A transmission groove is provided at the center of the bottom wall of the elongated groove. A moving groove is provided on the upper part of the inner wall of the transmission groove. A rotating groove is provided in the middle of the inner wall of the transmission groove. A limit groove is provided on the inner wall of the rotating groove.

[0007] A transmission rod is slidably connected to the inner wall of the chute. A finger ring is fixedly connected to the top of the transmission rod. The bottom end of the transmission rod is slidably connected to the groove at the bottom of the transmission chute. A bearing is sleeved on the upper surface of the transmission rod. Connecting rods are fixedly connected to both sides of the outer surface of the bearing. A locking rod is fixedly connected to one end of the connecting rod. A rotating block is fixedly sleeved on the middle surface of the transmission rod. The rotating block is slidably connected to the inner wall of the moving groove. The rotating block is rotatably connected to the inner wall of the rotating groove. A convex part is provided at the top of the rotating block. The convex part is fitted into the inner wall of the limiting groove.

[0008] As a preferred embodiment, a spring is sleeved on the lower surface of the transmission rod, and the two ends of the spring are in contact with the bottom end of the convex part and the bottom wall of the transmission groove, respectively.

[0009] As a preferred embodiment, the adapter is provided with symmetrical positioning grooves at both ends, and the plastic pipe and the steel pipe are both fixedly fitted with fixing rings, which are embedded in the inner wall of the positioning grooves.

[0010] As a preferred embodiment, the surface of the fixing ring is symmetrically provided with slots, and the slots are engaged with the locking rod.

[0011] As a preferred embodiment, the inner wall of the conversion joint is symmetrically provided with a first sealing groove, and the plastic pipe and the steel pipe are fixedly connected to a sealing joint at opposite ends, the sealing joint being fitted into the inner wall of the first sealing groove.

[0012] As a preferred embodiment, a first sealing ring is fixedly connected to the inner wall of the first sealing groove, and a corrugated groove is provided at one end of the sealing joint, with the corrugated groove end of the sealing joint contacting the first sealing ring.

[0013] As a preferred embodiment, a second sealing ring is fixedly connected to the inner wall of the positioning groove, and a second sealing groove is provided on one side of the fixing ring, with the second sealing ring fitting into the inner wall of the second sealing groove.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. This utility model is based on threaded connection and completes the initial fixation. With the mechanical locking of the fixing mechanism, the locking rod can be inserted into the locking groove by pressing the ring. It can lock the conversion joint, plastic pipe fitting and steel pipe fitting at the same time, fundamentally preventing the threaded connection from loosening due to vibration, thermal expansion and contraction, etc., and achieving the purpose of strengthening the anti-loosening. No wrench, screwdriver or other tools are required throughout the process, reducing the dependence on the skill of the installer. It is compatible with the threaded connection standard of conventional pipes and makes up for the defect of easy loosening of simple threaded connection. It is suitable for various specifications of pipes.

[0016] 2. This utility model achieves a preliminary physical seal by fitting the sealing joint with the first sealing groove, blocking the gas leakage path from the source. The labyrinth seal formed by the first sealing ring and the corrugated groove further enhances the tightness of the seal by increasing the contact area and squeezing the first sealing ring. Secondly, by embedding the second sealing ring into the second sealing groove, an additional barrier is added on the basis of the first seal, forming a double insurance, which significantly improves the reliability of the seal, ensures the long-term stability of the sealing structure, and fully meets the stringent requirements of gas pipelines for sealing performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall connection structure in this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure;

[0020] Figure 4 for Figure 3 A magnified structural diagram of point A in the middle.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Adaptor; 11. First sealing groove; 12. First sealing ring; 13. Positioning groove; 14. Second sealing ring; 2. Plastic pipe fitting; 3. Steel pipe fitting; 4. Sealing joint; 41. Corrugated groove; 5. Fixing ring; 51. Slot; 52. Second sealing groove; 6. Finger ring; 61. Sliding groove; 62. Long groove; 63. Transmission groove; 64. Moving groove; 65. Rotating groove; 66. Limiting groove; 67. Transmission rod; 68. Rotating block; 69. Convex part; 610. Spring; 611. Bearing; 612. Connecting rod; 613. Locking rod. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Reference Figures 1-4 The first embodiment of this utility model provides a gas installation connector adapter, including an adapter 1, a plastic pipe fitting 2 and a steel pipe fitting 3. The two ends of the adapter 1 are respectively threaded to the plastic pipe fitting 2 and the steel pipe fitting 3. The adapter 1 includes a fixing mechanism for ensuring the connection strength.

[0025] The surface of the adapter 1 is symmetrically provided with a sliding groove 61, and elongated grooves 62 are symmetrically provided on both sides of the sliding groove 61. A transmission groove 63 is provided at the center of the bottom wall of the elongated groove 62. A moving groove 64 is provided at the upper part of the inner wall of the transmission groove 63. A rotating groove 65 is provided at the middle part of the inner wall of the transmission groove 63. A limiting groove 66 is provided on the inner wall of the rotating groove 65.

[0026] A transmission rod 67 is slidably connected to the inner wall of the slide groove 61. A finger ring 6 is fixedly connected to the top of the transmission rod 67. The bottom end of the transmission rod 67 is slidably connected to the groove at the bottom wall of the transmission groove 63. A bearing 611 is sleeved on the upper surface of the transmission rod 67. A connecting rod 612 is fixedly connected to both sides of the outer surface of the bearing 611. A locking rod 613 is fixedly connected to one end of the connecting rod 612. A rotating block 68 is fixedly sleeved on the middle surface of the transmission rod 67. The rotating block 68 is slidably connected to the inner wall of the moving groove 64. The rotating block 68 is rotatably connected to the inner wall of the rotating groove 65. A convex part 69 is provided at the top of the rotating block 68. The convex part 69 is fitted into the inner wall of the limiting groove 66.

[0027] A spring 610 is fitted on the lower surface of the transmission rod 67, and the two ends of the spring 610 are in contact with the bottom end of the convex part 69 and the bottom wall of the transmission groove 63, respectively.

[0028] The adapter 1 has symmetrical positioning grooves 13 at both ends. The plastic pipe fitting 2 and the steel pipe fitting 3 are both fixedly sleeved with fixing rings 5, which are embedded in the inner wall of the positioning grooves 13.

[0029] The surface of the fixing ring 5 is symmetrically provided with slots 51, which are engaged with the locking rod 613.

[0030] Specifically, first screw the plastic pipe fitting 2 and the steel pipe fitting 3 into the two ends of the adapter 1 respectively, until the fixing rings 5 ​​on the surface of both are embedded in the positioning grooves 13 of the adapter 1. At this time, the slots 51 of the fixing rings 5 ​​correspond to the positions of the locking rods 613, and the initial connection is completed.

[0031] Next, press the ring 6. The ring 6 drives the transmission rod 67 to slide down along the slide groove 61 and the transmission groove 63. The rotating block 68 slides from the moving groove 64 into the rotating groove 65 along with the transmission rod 67. At this time, the spring 610 is compressed. During the downward movement of the transmission rod 67, the connecting rod 612 and the locking rod 613 are driven to move down through the bearing 611, so that the locking rod 613 is locked into the slot 51.

[0032] When the rotating block 68 slides into the rotating groove 65, the ring 6 rotates 90 degrees. The ring 6 drives the rotating block 68 to rotate 90 degrees through the transmission rod 67. The bearing 611 can ensure that the connecting rod 612 and the locking rod 613 will not rotate, keeping their lateral position fixed and only changing their longitudinal position.

[0033] When the rotating block 68 rotates 90 degrees, the convex part 69 at the top of the rotating block 68 aligns with the limiting groove 66. Then, the finger ring 6 is released. Under the elastic force of the spring 610, the rotating block 68 will move slightly upward, so that the convex part 69 is embedded in the limiting groove 66. The locking rod 613 will not disengage from the locking groove 51. At this time, the plastic pipe 2 and the steel pipe 3 are limited by the cooperation of the locking rod 613 and the fixing ring 5 and cannot be loosened by the thread, thus completing the fixation.

[0034] This design is based on threaded connections, which provide initial fixation. With the mechanical locking of the fixing mechanism, the locking rod 613 is inserted into the slot 51 by pressing the ring 6, which can lock the adapter 1, plastic pipe fitting 2 and steel pipe fitting 3 at the same time. This fundamentally prevents the threaded connection from loosening due to vibration, thermal expansion and contraction, etc., and achieves the purpose of strengthening the anti-loosening. No wrenches, screwdrivers or other tools are required throughout the process, reducing the dependence on the skills of the installers. It is compatible with the threaded connection standards of conventional pipes and makes up for the defect of easy loosening of simple threaded connections. It is suitable for various pipe specifications.

[0035] Reference Figures 1-4 This is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that: the inner wall of the conversion connector 1 is symmetrically provided with a first sealing groove 11, and the plastic pipe 2 and the steel pipe 3 are fixedly connected to a sealing connector 4 at opposite ends. The sealing connector 4 is fitted into the inner wall of the first sealing groove 11.

[0036] The inner wall of the first sealing groove 11 is fixedly connected to the first sealing ring 12, and one end of the sealing joint 4 is provided with a corrugated groove 41, and the end of the sealing joint 4 with the corrugated groove 41 is in contact with the first sealing ring 12.

[0037] The inner wall of the positioning groove 13 is fixedly connected to the second sealing ring 14, and the second sealing groove 52 is opened on one side of the fixing ring 5. The second sealing ring 14 is fitted into the inner wall of the second sealing groove 52.

[0038] Specifically, the sealing joints 4 of the plastic pipe fitting 2 and the steel pipe fitting 3 are fitted into the first sealing groove 11 on the inner wall of the conversion joint 1 to form a preliminary physical seal, which restricts the gas from seeping out from the gap between the pipe and the inner wall of the conversion joint 1. The first sealing ring 12 contacts the corrugated groove 41 of the sealing joint 4. The corrugated groove 41 increases the contact area with the first sealing ring 12, and the first sealing ring 12 will be embedded in the recess of the corrugated groove 41 after being squeezed, forming a labyrinth seal, which greatly improves the sealing effect and can maintain a tight fit even when the pipe vibrates slightly.

[0039] When the retaining ring 5 is fitted into the positioning groove 13 of the adapter 1, the second sealing ring 14 will be embedded in the second sealing groove 52 on one side of the retaining ring 5, forming a second sealing line.

[0040] This design achieves a preliminary physical seal by fitting the sealing joint 4 into the first sealing groove 11, blocking the gas leakage path at the source. The labyrinth seal formed by the first sealing ring 12 and the corrugated groove 41 further enhances the tightness of the seal by increasing the contact area and squeezing the first sealing ring 12. Secondly, by embedding the second sealing ring 14 into the second sealing groove 52, an additional barrier is added on the basis of the first seal, forming a double insurance, which significantly improves the reliability of the seal, ensures the long-term stability of the sealing structure, and fully meets the stringent requirements of gas pipelines for sealing performance.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas installation adapter, comprising an adapter (1), a plastic pipe fitting (2), and a steel pipe fitting (3), characterized in that: The adapter (1) has a plastic pipe fitting (2) and a steel pipe fitting (3) threaded to both ends respectively. The adapter (1) includes a fixing mechanism to ensure the connection strength. The conversion connector (1) has symmetrically provided sliding grooves (61) on its surface. The sliding grooves (61) have symmetrically provided elongated grooves (62) on both sides. The elongated grooves (62) have a transmission groove (63) at the center of the bottom wall of the bottom wall. The transmission grooves (63) have a moving groove (64) at the upper part of the inner wall. The transmission grooves (63) have a rotating groove (65) at the middle part of the inner wall. The rotating grooves (65) have a limiting groove (66) on the inner wall. A transmission rod (67) is slidably connected to the inner wall of the slide groove (61). A finger ring (6) is fixedly connected to the top of the transmission rod (67). The bottom end of the transmission rod (67) is slidably connected to the groove at the bottom wall of the transmission groove (63). A bearing (611) is sleeved on the upper surface of the transmission rod (67). A connecting rod (612) is fixedly connected to both sides of the outer surface of the bearing (611). A locking rod (613) is fixedly connected to one end of the connecting rod (612). A rotating block (68) is fixedly sleeved on the middle surface of the transmission rod (67). The rotating block (68) is slidably connected to the inner wall of the moving groove (64). The rotating block (68) is rotatably connected to the inner wall of the rotating groove (65). A convex part (69) is provided at the top of the rotating block (68). The convex part (69) is fitted into the inner wall of the limiting groove (66).

2. A gas installation connector adapter according to claim 1, characterized in that: A spring (610) is fitted on the lower surface of the transmission rod (67), and the two ends of the spring (610) are in contact with the bottom end of the convex part (69) and the bottom wall of the transmission groove (63), respectively.

3. A gas installation connector adapter according to claim 1, characterized in that: The conversion connector (1) has symmetrically opened positioning grooves (13) at both ends. The plastic pipe fitting (2) and the steel pipe fitting (3) are both fixedly sleeved with fixing rings (5), which are fitted into the inner wall of the positioning groove (13).

4. A gas installation connector adapter according to claim 3, characterized in that: The surface of the fixing ring (5) is symmetrically provided with slots (51), and the slots (51) are engaged with the locking rod (613).

5. A gas installation connector adapter according to claim 1, characterized in that: The conversion connector (1) has a first sealing groove (11) symmetrically opened in the middle of the inner wall. The plastic pipe fitting (2) and the steel pipe fitting (3) are fixedly connected to a sealing joint (4) at opposite ends. The sealing joint (4) is fitted into the inner wall of the first sealing groove (11).

6. A gas installation connector adapter according to claim 5, characterized in that: The inner wall of the first sealing groove (11) is fixedly connected with a first sealing ring (12), and one end of the sealing joint (4) is provided with a corrugated groove (41). The end of the sealing joint (4) with the corrugated groove (41) is in contact with the first sealing ring (12).

7. A gas installation connector adapter according to claim 3, characterized in that: The inner wall of the positioning groove (13) is fixedly connected to a second sealing ring (14), and a second sealing groove (52) is opened on one side of the fixing ring (5), and the second sealing ring (14) is fitted into the inner wall of the second sealing groove (52).

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