Pressure-bearing anti-loosening loose joint for solar steam pipeline

Abstract

The utility model relates to the technical field of anti-loosening loose joints, in particular to a solar steam pipeline pressure-bearing anti-loosening loose joint which comprises a hollow ring, a threaded rod is fixedly connected to the upper end of the hollow ring, external threads are fixedly arranged on the outer surface of the threaded rod, a nut is arranged on one side of the threaded rod, a conical sleeve is installed on one side of the nut, and the conical sleeve is fixedly connected with the hollow ring. A hollow pipe is arranged on the side, away from the nut, of the conical sleeve. An inner hole is formed in the conical sleeve, and an outer flange is fixedly connected to the outer side of the hollow pipe. When the conical sleeve cannot be screwed, the nut is rotated to move upwards along the threaded rod until the end face of the nut is tightly attached to the end face of the conical sleeve, contraction joint locking of the conical sleeve is formed, the effect of preventing looseness is achieved, the pressure-bearing movable joint can be effectively prevented from loosening in the using process, and the service life of the pressure-bearing movable joint is prolonged. And therefore, the phenomenon that steam conveyed in the solar steam pipeline leaks is effectively avoided, and follow-up use of the solar steam pipeline is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening flexible joints, in particular to a pressure-bearing anti-loosening flexible joint for a solar steam pipeline. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to anti-loosening joints is also constantly improving. In recent years, with the use of fossil fuels, the emission of carbon dioxide has caused global warming, and people are increasingly concerned about the earth's environment and energy. Under such circumstances, solar energy, as an inexhaustible, clean and environmentally friendly energy, has been widely used around the world. At present, solar steam pipes are widely used. When in use, solar steam pipes need to be connected with pressure-bearing joints.

[0003] The currently used pressure-bearing flexible joints are prone to loosening during use, which can easily lead to leakage of steam transported in the solar steam pipeline, which is not conducive to the subsequent use of the solar steam pipeline. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the pressure-bearing flexible joint currently used is easy to loosen during use, which in turn easily causes the steam transported in the solar steam pipe to leak, which is not conducive to the subsequent use of the solar steam pipe. The proposed solar steam pipe pressure-bearing anti-loosening flexible joint is

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A solar steam pipe pressure-bearing anti-loosening joint comprises a hollow ring, the upper end of which is fixedly connected to a threaded rod, the outer surface of which is fixedly provided with an external thread, a nut is provided on one side of the threaded rod, a conical sleeve is installed on one side of the nut, and a hollow tube is provided on the side of the conical sleeve away from the nut;

[0007] An inner hole is provided in the conical sleeve, an outer flange is fixedly connected to the outer side of the hollow tube, a limit ring is fixedly connected to the lower end of the hollow tube, and a groove is provided in the threaded rod.

[0008] Preferably, a mounting hole is provided in the nut, and a second thread is fixedly provided on the inner wall of the mounting hole.

[0009] Preferably, the inner wall of the tapered sleeve is fixedly provided with a first thread, and the tapered sleeve and the threaded rod are threadedly connected.

[0010] Preferably, two second anti-slip grooves are provided on the outer surface of the hollow tube, and a plurality of second protrusions are fixedly provided on the inner wall of each of the second anti-slip grooves.

[0011] Preferably, two first anti-slip grooves are provided on the outer surface of the hollow ring, and a plurality of first protrusions are fixedly provided on the inner wall of each of the first anti-slip grooves.

[0012] Preferably, the length of the limiting ring is set to 2 mm.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] During installation, first rotate the nut to make the second thread be threadedly connected with the external thread, and the nut will move down along the threaded rod until the nut is sleeved on the lower end of the threaded rod. Then, insert the lower end of the hollow tube into the inner hole of the tapered sleeve, and the outer flange will be clamped inside the inner hole. Then, rotate the tapered sleeve, the first thread will be threadedly connected with the external thread, and the tapered sleeve will be sleeved on the outside of the threaded rod. When the tapered sleeve cannot be twisted, rotate the nut again to move the nut up along the threaded rod until the end face of the nut is tightly attached to the end face of the tapered sleeve, forming a shrinkage seam of the tapered sleeve to lock it, thereby achieving the effect of preventing loosening. It can effectively prevent the pressure-bearing joint from loosening during use, and thus effectively prevent the steam transported in the solar steam pipeline from leaking, which is beneficial to the subsequent use of the solar steam pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the pressure-bearing and anti-loosening joint of the solar steam pipeline proposed by the present invention;

[0016] Figure 2 This is a front view structural diagram of the pressure-bearing and anti-loosening joint of the solar steam pipeline proposed by the present invention;

[0017] Figure 3 This is a left-side structural schematic diagram of the solar steam pipeline pressure-bearing and anti-loosening joint proposed by the utility model.

[0018] In the figure: 1 hollow ring, 2 first anti-slip groove, 3 threaded rod, 4 mounting hole, 5 outer flange, 6 second anti-slip groove, 7 hollow tube, 8 limit ring, 9 inner hole, 10 tapered sleeve, 11 nut, 12 groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] The terms "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not intended to limit the scope of application of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of application of the present invention without substantially changing the technical content.

[0021] Reference Figure 1-Figure 3 The solar steam pipeline pressure-bearing anti-loosening joint includes a hollow ring 1, the upper end of the hollow ring 1 is fixedly connected to a threaded rod 3, the outer surface of the threaded rod 3 is fixedly provided with an external thread, a nut 11 is provided on one side of the threaded rod 3, and a tapered sleeve 10 is installed on one side of the nut 11. The tapered sleeve 10 has 8 symmetrical gaps. During high-frequency thermal expansion and contraction, only the gaps can change, and the thread is not loose. A hollow tube 7 is provided on the side of the tapered sleeve 10 away from the nut 11, and an inner hole 9 is opened in the tapered sleeve 10. The outer side of the hollow tube 7 is fixedly connected with an outer flange 5, the lower end of the hollow tube 7 is fixedly connected to a limiting ring 8, and a groove 12 is opened in the threaded rod 3.

[0022] The length of the limiting ring 8 is set to 2mm. The lower end of the hollow tube 7 is inserted into the inner hole 9 of the tapered sleeve 10. After the outer flange 5 is clamped inside the inner hole 9, one end of the limiting ring 8 will be clamped inside the groove 12, which can effectively prevent the spherical surface of the hollow tube 7 from tilting. The inner wall of the tapered sleeve 10 is fixedly provided with a first thread, and the tapered sleeve 10 is threadedly connected to the threaded rod 3. When the tapered sleeve 10 is rotated, the first thread will be threadedly connected with the external thread, and the tapered sleeve 10 will be sleeved on the outside of the threaded rod 3. A mounting hole 4 is provided in the nut 11, and the inner wall of the mounting hole 4 is fixedly provided with a second thread. When the tapered sleeve 10 cannot be twisted, the nut 11 is rotated again to move the nut 11 up along the threaded rod 3 until the end face of the nut 11 is tightly attached to the end face of the tapered sleeve 10, forming a shrinkage seam locking of the tapered sleeve 10, thereby achieving the effect of preventing loosening.

[0023] The outer surface of the hollow ring 1 is provided with two first anti-slip grooves 2, and the inner wall of each first anti-slip groove 2 is fixedly provided with multiple first protrusions. The surface of the multiple first protrusions is rough, which can increase the friction when the fingers contact the inner wall of the first anti-slip groove 2, avoiding the occurrence of slipping, so as to facilitate the gripping, limiting or moving of the hollow ring 1. The outer surface of the hollow tube 7 is provided with two second anti-slip grooves 6, and the inner wall of each second anti-slip groove 6 is fixedly provided with multiple second protrusions. The surface of the multiple second protrusions is rough, which can increase the friction when the fingers contact the inner wall of the second anti-slip groove 6, avoiding the occurrence of slipping, so as to facilitate the gripping, limiting or moving of the hollow tube 7.

[0024] In the present invention, when installing, first rotate the nut 11 so that the nut 11 is sleeved on the outside of the threaded rod 3, and the second thread is threadedly connected to the external thread, and the nut 11 will move down along the threaded rod 3 until the nut 11 is sleeved on the lower end of the threaded rod 3, and then the lower end of the hollow tube 7 is inserted into the inner hole 9 of the tapered sleeve 10, and the outer flange 5 is clamped inside the inner hole 9. The sealing performance of the outer flange 5 and the inner hole 9 is good, and then the tapered sleeve 10 is rotated, the first thread is threadedly connected to the external thread, and the tapered sleeve 10 is sleeved on the outside of the threaded rod 3. When the tapered sleeve 10 is When it cannot be turned, rotate the nut 11 again to move the nut 11 up along the threaded rod 3 until the end face of the nut 11 is in close contact with the end face of the tapered sleeve 10, forming a shrinkage seam of the tapered sleeve 10 to lock it, thereby preventing it from loosening. At this time, the limit ring 8 is stuck in the groove 12, which can effectively prevent the spherical surface of the hollow tube 7 from tilting. The tapered sleeve 10 has good sealing performance when connected to the threaded rod 3, which can effectively prevent the pressure-bearing joint from loosening during use, thereby effectively preventing the steam transported in the solar steam pipeline from leaking, which is beneficial to the subsequent use of the solar steam pipeline.

[0025] In the present invention, unless otherwise clearly specified or limited, the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solar steam pipe pressure-bearing anti-loosening joint, comprising a hollow ring (1), characterized in that: The upper end of the hollow ring (1) is fixedly connected to a threaded rod (3), the outer surface of the threaded rod (3) is fixedly provided with an external thread, a nut (11) is provided on one side of the threaded rod (3), a conical sleeve (10) is installed on one side of the nut (11), and a hollow tube (7) is provided on the side of the conical sleeve (10) away from the nut (11); An inner hole (9) is provided in the conical sleeve (10), an outer flange (5) is fixedly connected to the outer side of the hollow tube (7), a limiting ring (8) is fixedly connected to the lower end of the hollow tube (7), and a groove (12) is provided in the threaded rod (3).

2. The solar steam pipe pressure-bearing anti-loosening joint according to claim 1 is characterized in that A mounting hole (4) is provided in the nut (11), and a second thread is fixedly provided on the inner wall of the mounting hole (4).

3. The solar steam pipeline pressure-bearing anti-loosening joint according to claim 1 is characterized in that: The inner wall of the tapered sleeve (10) is fixedly provided with a first thread, and the tapered sleeve (10) and the threaded rod (3) are threadedly connected.

4. The solar steam pipeline pressure-bearing anti-loosening joint according to claim 1 is characterized in that: Two second anti-slip grooves (6) are provided on the outer surface of the hollow tube (7), and a plurality of second protrusions are fixedly provided on the inner wall of each second anti-slip groove (6).

5. The solar steam pipeline pressure-bearing anti-loosening joint according to claim 1 is characterized in that: Two first anti-slip grooves (2) are provided on the outer surface of the hollow ring (1), and a plurality of first protrusions are fixedly provided on the inner wall of each of the first anti-slip grooves (2).

6. The solar steam pipeline pressure-bearing anti-loosening joint according to claim 1 is characterized in that: The length of the limiting ring (8) is set to 2 mm.

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