Multidirectional large-stroke pipeline expansion piece
By designing a multi-directional large-stroke pipeline telescope, using components such as spherical inner joints, semi-spherical outer joints and sealing rings, the problem that elbow connections in the prior art cannot adapt to pipeline expansion and contraction, and the pipeline is thermally expanded and contracted, Stable connection and displacement compensation in vibration and other situations.
Patent Information
- Application Number
- CN202421140384.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing elbow connections cannot adapt to the fine adjustment of the steering of the pipeline during the expansion and contraction process, which can easily lead to the connection gap and cannot effectively respond to the displacement compensation of the pipeline in the event of thermal expansion, cooling, vibration and earthquakes.
A multi-directional large-stroke pipe telescope is designed, using a spherical inner joint and a hemispherical outer joint, equipped with a sealing ring and a collar. Through a combined structure of telescopic sections, guide sections, limit sections and limit plugs, it realizes the Pipe steering fine-tuning and displacement compensation ensure the tightness and stability of the connection.
The steering adjustment of the pipe during the expansion and contraction process is achieved, which enhances the stability and sealing of the connection, avoids the generation of gaps, and ensures the continuity and safety of the pipe in various special circumstances.
Smart Images
Figure CN222209423U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline expansion joints, in particular to a multi-directional large-stroke pipeline expansion joint. Background Art
[0002] Expansion joints are also called expansion joints, expansion joints, and compensators. Expansion joints can be axially expanded and contracted within a certain range. They are used to compensate for axial displacement caused by thermal expansion and contraction during the use of pipelines, or absorb equipment vibrations to reduce the impact of equipment vibrations on pipelines, and absorb deformation of pipelines caused by earthquakes and ground subsidence, so as to ensure that pipelines will not break under various special circumstances. In the process of pipeline connection, in addition to dealing with straight-line connections, it is also necessary to consider the needs of elbow connections. Usually, elbows are used to connect two straight pipes to achieve elbow connections. However, for pipelines with expansion and contraction scenarios, existing elbows cannot adapt to the expansion and contraction of the pipeline to perform steering fine-tuning, and are prone to causing connection gaps when the pipeline expands and contracts. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a multi-directional long-stroke pipeline expander with an ingenious structural design and capable of adapting to the expansion and contraction of the pipeline for steering fine-tuning.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A multi-directional large-stroke pipeline expander comprises a first end tube and a second end tube, wherein one end of the first end tube can be telescopically inserted into the second end tube; the characteristic is that the ends of the first end tube and the second end tube opposite to each other both have an inner joint formed by spherical protrusion outward, the inner joint is matched with a hemispherical outer joint, and the outer end of the outer joint has a connecting flange; the inner side of the outer joint has a first sealing ring that is sealed with the inner joint.
[0006] Furthermore, the first sealing ring and the connecting flange are located on both sides of the spherical center of the outer joint, the inner diameter of the first sealing ring is smaller than the outer diameter of the inner joint, and the difference between the two is smaller than the maximum radial compression of the first sealing ring.
[0007] Furthermore, a collar is provided on a side of the inner joint facing away from the outer joint, the smallest inner diameter of the collar is smaller than the outer diameter of the inner joint, and the collar is detachably connected to the outer joint.
[0008] Furthermore, the sleeve ring has an inner surface matching the inner joint, and the inner surface has a second sealing ring sealingly matched with the inner joint.
[0009] Furthermore, the edge of the outer joint has a first flange protruding therefrom, and the collar has a second flange protruding therefrom in the radial direction, and the first flange and the second flange are detachably connected by bolts.
[0010] Furthermore, a telescopic section is provided on the outer tube wall of one end of the first end tube facing the second end tube, and the inner tube wall of one end of the second end tube facing the first end tube includes a guide section and a limit section arranged in sequence, and the inner diameter of the limit section is larger than the inner diameter of the guide section; the outer diameter of the telescopic section matches the inner diameter of the guide section, and can be telescopically fitted in the guide section, and the guide section has a sealing ring that seals with the telescopic section; the second end tube is detachably connected to a limit plug at one end facing the first end tube, and the limit plug includes a circular arc-shaped plug block, the inner diameter of the plug block matches the outer diameter of the telescopic section, and is plugged between the limit section and the telescopic section; the telescopic section has a protruding limit block, and the limit block is located between the limit plug and the guide section.
[0011] Furthermore, at least one intermediate tube is connected between the first end tube and the second end tube, the intermediate tube has the telescopic section on the outer tube wall at one end facing the second end tube, and the guide section and the limit section are provided on the inner tube wall at the other end, and the limit plug is detachably connected to the end of the intermediate tube facing the first end tube.
[0012] Furthermore, the limiting section has a flange at one end facing the first end tube, the limiting plug has a connecting plate formed to protrude radially, the connecting plate has bolt holes set through it, and is connected to the flange by bolts.
[0013] Furthermore, the limiting plug is semicircular and two of them are symmetrically arranged.
[0014] Furthermore, the limit block extends into a ring shape along the circumference of the telescopic section.
[0015] In summary, the utility model has the advantages of clever structural design and the ability to adapt to the expansion and contraction of the pipeline for fine-tuning of steering. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of Example 1.
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of Example 2. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the embodiments.
[0019] Example 1: Figure 1As shown, a multi-directional large-stroke pipeline expansion joint comprises a first end tube 1 and a second end tube 2, one end of the first end tube 1 can be telescopically inserted into the second end tube 2; the first end tube 1 and the second end tube 2 have an inner joint 91 formed by spherical protrusion outward at the opposite ends, and the inner joint 91 is matched with a hemispherical outer joint 92, and the outer end of the outer joint 92 has a connecting flange; the inner side of the outer joint 92 has a first sealing ring 93 that is sealed with the inner joint 91, the first sealing ring 93 and the connecting flange are located on both sides of the spherical center of the outer joint 92, the inner diameter of the first sealing ring 93 is smaller than the outer diameter of the inner joint 91, and the difference between the two is smaller than the maximum radial compression of the first sealing ring 93. In this way, the inner joint 91 can be tightly fitted into the outer joint 92 by compressing the first sealing ring, and the inner joint 91 can be restricted in the outer joint 92 by the first sealing ring 93 to prevent the two from falling off.
[0020] A telescopic section 3 is provided on the outer tube wall of one end of the first end tube 1 facing the second end tube 2, and the inner tube wall of one end of the second end tube 2 facing the first end tube 1 includes a guide section 4 and a limit section 5 arranged in sequence, and the inner diameter of the limit section 5 is larger than the inner diameter of the guide section 4; the outer diameter of the telescopic section 3 matches the inner diameter of the guide section 4, and can be telescopically fitted in the guide section 4, and the guide section 4 has a sealing ring that seals with the telescopic section 3; the second end tube 2 is detachably connected to a limit plug 6 at one end facing the first end tube 1, and the limit plug 6 includes a circular arc-shaped plug block, the inner diameter of the plug block matches the outer diameter of the telescopic section 3, and is plugged between the limit section 5 and the telescopic section 3; the telescopic section 3 has a protruding limit block 7, and the limit block 7 extends in a ring shape along the circumference of the telescopic section 3 and is located between the limit plug 6 and the guide section 4.
[0021] In order to increase the telescopic size, in this embodiment, at least one intermediate tube 8 is connected between the first end tube 1 and the second end tube 2, and the intermediate tube 8 has the telescopic section 3 on the outer tube wall at one end facing the second end tube 2, and the guide section 4 and the limit section 5 are provided on the inner tube wall at the other end, and the intermediate tube 8 is detachably connected to the limit plug 6 at one end facing the first end tube 1.
[0022] The end of the limiting section 5 facing the first end tube 1 has a flange, and the limiting plug 6 has a connecting plate protruding in the radial direction, and the connecting plate has bolt holes extending therethrough and connected to the flange by bolts. Specifically, the limiting plug 6 is semicircular and symmetrically provided with two.
[0023] In the above structure, the stopper plug detachably connected to the second end tube allows the stopper block on the telescopic section to be located between the stopper plug and the guide section, thereby preventing the telescopic section from falling off from the guide section. Since the stopper plug is connected to the second end tube and is disposed between the telescopic section and the stopper plug, the stopper plug is closer to the pipeline, making the overall structure more compact and having better structural stability.
[0024] Example 2: Figure 2 As shown, a multi-directional large-stroke pipeline expander includes a first end tube 1 and a second end tube 2, one end of the first end tube 1 can be telescopically inserted into the second end tube 2; the first end tube 1 and the second end tube 2 have an inner joint 91 formed by a spherical protrusion outward at the opposite ends, and the inner joint 91 is matched with a hemispherical outer joint 92, and the outer end of the outer joint 92 has a connecting flange; the inner side of the outer joint 92 has a first sealing ring 93 that is sealed with the inner joint 91.
[0025] In this embodiment, the inner joint 91 has a collar 94 on the side facing away from the outer joint 92. The minimum inner diameter of the collar 94 is smaller than the outer diameter of the inner joint 91, and the collar 94 is detachably connected to the outer joint 92. Specifically, the edge of the outer joint 92 has a protruding first flange, and the collar 94 has a second flange protruding radially. The first flange and the second flange are detachably connected by bolts.
[0026] During specific implementation, in order to allow the ring 94 to squeeze the inner joint 91 more tightly to ensure a better sealing effect between the inner joint 91 and the first sealing ring 93, the ring 94 also has an inner surface matching the inner joint 91, and the inner surface has a second sealing ring 95 that seals with the inner joint 91. The cooperation between the second sealing ring 95 and the surface of the inner joint 91 can not only make the relative movement between the ring 94 and the inner joint 91 smoother, but also can use the second sealing ring 95 to always apply an extrusion force to the inner joint, thereby ensuring the sealing effect of the first sealing ring.
[0027] A telescopic section 3 is provided on the outer tube wall of one end of the first end tube 1 facing the second end tube 2, and the inner tube wall of one end of the second end tube 2 facing the first end tube 1 includes a guide section 4 and a limit section 5 arranged in sequence, and the inner diameter of the limit section 5 is larger than the inner diameter of the guide section 4; the outer diameter of the telescopic section 3 matches the inner diameter of the guide section 4, and can be telescopically fitted in the guide section 4, and the guide section 4 has a sealing ring that seals with the telescopic section 3; the second end tube 2 is detachably connected to a limit plug 6 at one end facing the first end tube 1, and the limit plug 6 includes a circular arc-shaped plug block, the inner diameter of the plug block matches the outer diameter of the telescopic section 3, and is plugged between the limit section 5 and the telescopic section 3; the telescopic section 3 has a protruding limit block 7, and the limit block 7 extends in a ring shape along the circumference of the telescopic section 3 and is located between the limit plug 6 and the guide section 4.
[0028] In order to increase the telescopic size, in this embodiment, at least one intermediate tube 8 is connected between the first end tube 1 and the second end tube 2, and the intermediate tube 8 has the telescopic section 3 on the outer tube wall at one end facing the second end tube 2, and the guide section 4 and the limit section 5 are provided on the inner tube wall at the other end, and the intermediate tube 8 is detachably connected to the limit plug 6 at one end facing the first end tube 1.
[0029] The end of the limiting section 5 facing the first end tube 1 has a flange, and the limiting plug 6 has a connecting plate protruding in the radial direction, and the connecting plate has bolt holes extending therethrough and connected to the flange by bolts. Specifically, the limiting plug 6 is semicircular and symmetrically provided with two.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A multi-directional long-stroke pipeline expander, comprising a first end tube (1) and a second end tube (2), wherein one end of the first end tube (1) is telescopically inserted into the second end tube (2); characterized in that: The ends of the first end tube (1) and the second end tube (2) opposite to each other each have an inner joint (91) formed to protrude outward in a spherical shape, the inner joint (91) is matched with an outer joint (92) in a hemispherical shape, the outer end of the outer joint (92) having a connecting flange; the inner side of the outer joint (92) has a first sealing ring (93) which is sealed with the inner joint (91).
2. The multi-directional long-stroke pipeline expander according to claim 1, characterized in that: The first sealing ring (93) and the connecting flange are located on both sides of the spherical center of the outer joint (92); the inner diameter of the first sealing ring (93) is smaller than the outer diameter of the inner joint (91), and the difference between the inner diameter and the inner diameter is smaller than the maximum radial compression of the first sealing ring (93).
3. The multi-directional long-stroke pipeline expander according to claim 1, characterized in that: The inner joint (91) has a collar (94) on a side facing away from the outer joint (92); the collar (94) has a minimum inner diameter smaller than an outer diameter of the inner joint (91) and is detachably connected to the outer joint (92).
4. The multi-directional long-stroke pipeline expander according to claim 3, characterized in that: The sleeve ring (94) has an inner surface matching the inner joint (91), and the inner surface has a second sealing ring (95) sealingly matching the inner joint (91).
5. The multi-directional long-stroke pipeline expander according to claim 3, characterized in that: The edge of the outer joint (92) has a first flange that is protrudingly arranged, and the collar (94) has a second flange that is protrudingly arranged in the radial direction, and the first flange and the second flange are detachably connected by bolts.
6. The multi-directional long-stroke pipeline expander according to claim 1, characterized in that: The first end tube (1) has a telescopic section (3) on its outer tube wall at one end facing the second end tube (2); the second end tube (2) has an inner tube wall at one end facing the first end tube (1) including a guide section (4) and a limit section (5) arranged in sequence; the inner diameter of the limit section (5) is larger than the inner diameter of the guide section (4); the outer diameter of the telescopic section (3) matches the inner diameter of the guide section (4) and can be telescopically fitted in the guide section (4); the guide section (4) has a The telescopic section (3) is provided with a sealing ring which is sealed with the telescopic section (3); the second end tube (2) is detachably connected to a limit stopper (6) at one end facing the first end tube (1); the limit stopper (6) comprises an arc-shaped stopper block, the inner diameter of the stopper block matches the outer diameter of the telescopic section (3), and the stopper block is arranged between the limit stopper (5) and the telescopic section (3); the telescopic section (3) is provided with a protruding limit stopper (7), and the limit stopper (7) is located between the limit stopper (6) and the guide section (4).
7. The multi-directional long-stroke pipeline expander according to claim 6, characterized in that: At least one intermediate tube (8) is connected between the first end tube (1) and the second end tube (2); the intermediate tube (8) has the telescopic section (3) on its outer tube wall at one end facing the second end tube (2); the guide section (4) and the limit section (5) are arranged on its inner tube wall at the other end; and the limit plug (6) is detachably connected to one end of the intermediate tube (8) facing the first end tube (1).
8. The multi-directional long-stroke pipeline expander according to claim 6 or 7, characterized in that: The end of the limiting section (5) facing the first end tube (1) has a flange, and the limiting plug (6) has a connecting plate protruding in the radial direction, the connecting plate has bolt holes extending therethrough and is connected to the flange by bolts.
9. The multi-directional long-stroke pipeline expander according to claim 8, characterized in that: The limiting plugs (6) are semicircular in shape and two are symmetrically arranged.
10. The multi-directional long-stroke pipeline expander according to claim 8, characterized in that: The limiting block (7) extends in a ring shape along the circumference of the telescopic section (3).