Heating pipeline for urban heating

Abstract

The utility model discloses a heating pipeline for urban heating in the technical field of heating pipelines, which comprises a first pipeline and a second pipeline, the second pipeline is provided with a nut, the right end of the first pipeline is provided with a connecting groove, the right side of the surface of the first pipeline is provided with an external thread, and the second pipeline is provided with a retainer ring. A fixing ring is arranged on the left side of the check ring, a mounting groove is formed in the left end of the connecting groove, the left end of the mounting groove is arranged to be an inclined plane, a first sealing ring is arranged in the connecting groove, a second sealing ring is arranged at the left end of the first sealing ring, and after the nut is fastened, the upward extending part of the fixing ring abuts against the first sealing ring; the first sealing ring is extruded, the sealing performance of the second pipeline installed in the first pipeline is further improved, the first pipeline and the second pipeline are installed by rotating the nut, the installation efficiency is high, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of heating pipes, in particular to a heating pipe for urban heating. Background Art

[0002] With the increase in urban heating, the number of heating pipes has increased accordingly. The connection of the heating pipes must ensure their sealing and prevent leakage during use. For example, a heating pipe connection device disclosed in Chinese patent literature (patent number: CN202220475022.3) uses two sets of upper and lower clamps to fix and seal the heating pipes after connection. The sealing structure is set on the clamps, and no sealing structure is set at the connection of the heating pipes themselves. After the heating pipes are connected, leakage is likely to occur. In addition, the two sets of clamps are large in size, and positioning is required during the installation process. Not only is the installation efficiency low, but the production cost is also high.

[0003] For this purpose, we propose a heating pipe for urban heating. Utility Model Content

[0004] The purpose of the present utility model is to provide a heating pipe for urban heating to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heating pipe for urban heating, comprising a first pipe and a second pipe, a nut is provided on the second pipe, a connecting groove is provided at the right end of the first pipe, an external thread is provided at the right side of the surface of the first pipe, a retaining ring is provided on the second pipe, a fixing ring is provided on the left side of the retaining ring, an installation groove is provided at the left end of the connecting groove, the left end of the installation groove is set as an inclined surface, a first sealing ring is provided in the connecting groove, and a second sealing ring is provided at the left end of the first sealing ring.

[0006] Furthermore, the second sealing ring is fixedly connected to the first sealing ring, and the second sealing ring is installed in the installation groove.

[0007] Furthermore, an internal thread matching the external thread is provided on the inner wall of the nut.

[0008] Furthermore, the right half of the fixing ring extends upward, and the top of the extended portion of the fixing ring is configured as an inclined surface.

[0009] Furthermore, the upper left end of the fixing ring is tilted.

[0010] Furthermore, the retaining ring is fixedly installed on the second pipe, and a sealing ring is provided on the left side of the retaining ring.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: during the tightening process, the nut drives the second pipe to move through the retaining ring and is installed in the first pipe, and at the same time the fixing ring moves, and the left half of the fixing ring moves to the bottom of the first sealing ring and the second sealing ring, and at the same time the fixing ring squeezes the first sealing ring and the second sealing ring to ensure the sealing after the second pipe is connected. After the nut is tightened, the upward extending part of the fixing ring will press the first sealing ring and squeeze the first sealing ring, further improving the sealing of the second pipe installed in the first pipe. The first pipe and the second pipe are installed by rotating the nut, which not only has high installation efficiency but also low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is an enlarged view of point A of the utility model;

[0014] Figure 3 This is a diagram after the first pipeline and the second pipeline of the utility model are connected.

[0015] In the figure: 1. First pipe; 2. Second pipe; 3. Nut; 4. Connecting groove; 5. External thread; 6. Retaining ring; 7. Fixing ring; 8. Mounting groove; 9. Inclined surface; 10. First sealing ring; 11. Second sealing ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-3The utility model provides a technical solution: a heating pipe for urban heating, comprising a first pipe 1 and a second pipe 2, a nut 3 is provided on the second pipe 2, a connecting groove 4 is provided at the right end of the first pipe 1, an external thread 5 is provided on the right side of the surface of the first pipe 1, a retaining ring 6 is provided on the second pipe 2, a fixing ring 7 is provided on the left side of the retaining ring 6, an installation groove 8 is provided at the left end of the connecting groove 4, and an inclined surface 9 is provided at the left end of the installation groove 8. A first sealing ring 10 is provided in the connecting groove 4, and a second sealing ring 11 is provided at the left end of the first sealing ring 10. When the first pipe 1 and the second pipe 2 are connected, the nut 3 is put on the second pipe 2 from right to left, and then the fixing ring 7 is put on the second pipe 2 from left to right, and the second pipe 2 and Nut 3, nut 3 is connected to the first pipe 1, the internal thread set in the nut 3 cooperates with the external thread 5, tighten the nut 3, and the retaining ring 6 is fixed to the second pipe 2. During the tightening process, the nut 3 drives the second pipe 2 to move through the retaining ring 6 and is installed in the first pipe 1. At the same time, the fixing ring 7 moves, and the left half of the fixing ring 7 moves to the bottom of the first sealing ring 10 and the second sealing ring 11. At the same time, the fixing ring 7 squeezes the first sealing ring 10 and the second sealing ring 11 to ensure the sealing of the second pipe 2 after the connection is completed. After the nut 3 is tightened, the upward extending part of the fixing ring 7 will tighten the first sealing ring 10 and squeeze the first sealing ring 10 to further improve the sealing of the second pipe 2 installed in the first pipe 1.

[0018] The second sealing ring 11 is fixedly connected to the first sealing ring 10, and the second sealing ring 11 is installed in the installation groove 8. By arranging the first sealing ring 10 and the second sealing ring 11, the first sealing ring 10 and the second sealing ring 11 are squeezed by the fixing ring 7, thereby improving the sealing performance of the connection between the first pipe 1 and the second pipe 2.

[0019] An internal thread that matches the external thread 5 is provided on the inner wall of the nut 3. The internal thread provided in the nut 3 matches the external thread 5 provided on the first pipe 2 to install the second pipe 2.

[0020] The right half of the fixing ring 7 extends upward, and the top of the extending portion of the fixing ring 7 is set as an inclined surface. The upward extending portion of the fixing ring 7 squeezes the first sealing ring 10 to strengthen the sealing performance after the first pipe 1 and the second pipe 2 are installed and connected. The upper left end of the fixing ring 7 is set obliquely.

[0021] The retaining ring 6 is fixedly installed on the second pipe 2, and a sealing ring is provided on the left side of the retaining ring 6. During the tightening process of the nut 3, the fixing ring 7 squeezes the first sealing ring 10. At the same time, the fixing ring 7 cooperates with the retaining ring 6 to squeeze the sealing ring to strengthen the sealing performance after the first pipe 1 and the second pipe 2 are connected.

[0022] Working principle: Connect the first pipe 1 and the second pipe 2, put the nut 3 on the second pipe 2 from right to left, and then put the fixing ring 7 on the second pipe 2 from left to right, move the second pipe 2 and the nut 3, the nut 3 is connected to the first pipe 1, the internal thread set in the nut 3 cooperates with the external thread 5, tighten the nut 3, and the retaining ring 6 is fixed on the second pipe 2. During the tightening process, the nut 3 drives the second pipe 2 to move through the retaining ring 6 and is installed in the first pipe 1. At the same time, the fixing ring 7 moves, and the left half of the fixing ring 7 moves to the bottom of the first sealing ring 10 and the second sealing ring 11. At the same time, the fixing ring 7 squeezes the first sealing ring 10 and the second sealing ring 11 to ensure the sealing of the second pipe 2 after the connection is completed. After the nut 3 is tightened, the upward extending part of the fixing ring 7 will press the first sealing ring 10 tightly and squeeze the first sealing ring 10 to further improve the sealing of the second pipe 2 installed in the first pipe 1.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating pipe for urban heating, comprising a first pipe (1) and a second pipe (2), characterized in that: The second pipe (2) is provided with a nut (3), the right end of the first pipe (1) is provided with a connecting groove (4), the right side of the surface of the first pipe (1) is provided with an external thread (5), the second pipe (2) is provided with a retaining ring (6), a fixing ring (7) is provided on the left side of the retaining ring (6), a mounting groove (8) is provided at the left end of the connecting groove (4), the left end of the mounting groove (8) is provided with an inclined surface (9), a first sealing ring (10) is provided in the connecting groove (4), and a second sealing ring (11) is provided at the left end of the first sealing ring (10).

2. A heating pipe for urban heating according to claim 1, characterized in that: The second sealing ring (11) is fixedly connected to the first sealing ring (10), and the second sealing ring (11) is installed in the installation groove (8).

3. A heating pipe for urban heating according to claim 1, characterized in that: An internal thread matching the external thread (5) is provided on the inner wall of the nut (3).

4. A heating pipe for urban heating according to claim 1, characterized in that: The right half of the fixing ring (7) extends upward, and the top of the extended portion of the fixing ring (7) is arranged as an inclined surface.

5. The heating pipe for urban heating according to claim 1, characterized in that: The upper left end of the fixing ring (7) is arranged tilted.

6. A heating pipe for urban heating according to claim 1, characterized in that: The retaining ring (6) is fixedly mounted on the second pipe (2), and a sealing ring is provided on the left side of the retaining ring (6).

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