Inner supporting device for large-pipe-diameter buried pipeline

Abstract

The utility model provides a large-pipe-diameter buried pipeline inner supporting device, which belongs to the technical field of buried pipeline finished product protection, and comprises three supporting rod pieces, two ends of each supporting rod piece are used for abutting against the inner wall of a buried pipeline; one of the three supporting rod pieces is vertically arranged, and the other two supporting rod pieces are symmetrically arranged in an X shape; each supporting rod piece comprises a rod sleeve and a screw rod which are in threaded connection. When the inner supporting device is used, the three supporting rod pieces are placed in the buried pipeline, the two ends of each supporting rod piece abut against the inner wall of the buried pipeline, and the vertically-arranged supporting rod pieces can bear vertical loads borne by the buried pipeline; in addition, the two X-shaped symmetrically-arranged supporting rod pieces can achieve the symmetrical jacking and supporting effect on the buried pipeline on the two sides of the vertically-arranged supporting rod piece, deformation of the buried pipeline can be effectively relieved or even avoided through combined use of the three supporting rod pieces, and the safety of the buried pipeline is guaranteed; and a pipeline welding seam of the buried pipeline cannot be cracked due to external load pressure.

Description

Technical Field

[0001] The utility model belongs to the technical field of finished product protection of buried pipelines, and more specifically relates to an internal supporting device for large-diameter buried pipelines. Background Art

[0002] In industrial systems, especially in thermal power plants, buried large pipelines are more common. Generally speaking, the construction period of a thermal power plant is 2-3 years. On-site construction is generally carried out from deep to shallow, from underground to above ground. At the same time, taking into account the requirements of civilized construction on site, underground pipeline construction is generally carried out earlier. It takes a long time from the completion of underground pipeline construction to the water supply of the pipeline and the commissioning of the project.

[0003] Large buried pipelines generally have a diameter of more than 2m and a wall thickness of 10-30mm. Buried pipelines are thin-walled structures and are easily deformed by external pressure loads during construction. Once the elastic deformation limit of the steel pipe is exceeded, the pipeline will be unable to recover and even the welds may crack. Large-diameter buried pipelines are buried deep. Once a failure occurs, on-site repair is more difficult, resulting in serious quality accidents, construction delays and large economic losses. Therefore, construction units need to do a good job of protecting buried pipeline finished products during infrastructure construction.

[0004] Currently, on-site protection for large-diameter buried pipelines primarily involves laying steel plates on the ground or road beneath the pipeline to distribute the ground load, prohibiting mechanical rolling over the pipeline, and prohibiting the accumulation of soil on top of the pipeline. However, these measures only slow down pipeline deformation. During on-site construction, machinery, vehicles, and even large equipment inevitably pass over buried pipelines for brief periods, causing deformation. Therefore, more reliable measures are needed to protect large-diameter buried pipelines. Utility Model Content

[0005] The purpose of the utility model is to provide an internal support device for large-diameter buried pipelines to ensure that during infrastructure construction, the deformation of the large-diameter buried pipelines is controlled within their elastic deformation, so that their welds are not torn and the pipelines can be smoothly put into operation; at the same time, the pipelines under the road can allow large equipment (the largest transported piece in a thermal power plant can weigh up to 500t) to pass over them.

[0006] To achieve the above objectives, the present invention adds internal supports to buried pipelines located underground in sections of roads or large equipment to bear the external loads of the buried pipelines, thereby reducing or even preventing deformation of the buried pipelines. Based on this, the present invention provides an internal support device for large-diameter buried pipelines, comprising three support rods, each with two ends designed to abut against the inner wall of the buried pipeline; one of the three support rods is arranged vertically, while the other two are arranged symmetrically in an X-shape; each support rod comprises a threaded sleeve and a screw.

[0007] Furthermore, both ends of each support rod are connected to a bearing plate.

[0008] Furthermore, a rubber pad is connected to one side of each bearing plate close to the buried pipeline.

[0009] Furthermore, it also includes a plurality of filling blocks, which are filled between the rubber pad and the inner wall of the buried pipeline.

[0010] Furthermore, the angle between two adjacent support rods is 30°-45°.

[0011] Furthermore, the filling block is a steel plate or a polytetrafluoroethylene plate.

[0012] Furthermore, the rod sleeve is a steel pipe.

[0013] Furthermore, one end of the steel pipe is connected to a nut that cooperates with the screw rod.

[0014] Furthermore, the bearing plate is a carbon steel plate.

[0015] Furthermore, the bearing plate is welded to both ends of the support rod.

[0016] Compared with the prior art, the present invention has the following technical effects:

[0017] When the internal support device of a large-diameter buried pipeline of the present invention is used, three support rods are placed in the buried pipeline so that the two ends of the support rods abut against the inner wall of the buried pipeline, and the vertically arranged support rods can bear the vertical load borne by the buried pipeline. The other two X-shaped symmetrically arranged support rods can play a symmetrical supporting role on the buried pipeline on both sides of the vertically arranged support rods. The combined use of the three support rods can effectively alleviate or even avoid the deformation of the buried pipeline, ensure the safety of the buried pipeline, and prevent the buried pipeline weld from being torn due to external load pressure. After using the internal support device of the present invention, the buried pipeline can temporarily allow large equipment to pass over it, and this support method will not damage the anti-corrosion coating on the inner and outer walls of the buried pipeline. The internal support device of a large-diameter buried pipeline of the present invention has a simple structure, good economy, high convenience, and is easy to install and remove. After removal, it will not affect the normal water flow and commissioning of the buried pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 A schematic diagram of the front view of a large-diameter buried pipeline internal support device provided by an embodiment of the present invention when installed in a buried pipeline;

[0020] Figure 2 for Figure 1 A side structural diagram of

[0021] Figure 3 for Figure 1 Schematic diagram of the locally enlarged structure in .

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Buried pipe, 2. Support rod, 3. Load-bearing plate, 4. Rubber pad, 5. Filling block, 201. Rod sleeve, 202. Screw, 203. Nut. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise.

[0028] See also Figures 1-3 , below, taking the circulating water pipe of a 1000MW thermal power plant as an example, an internal support device for a large-diameter buried pipeline provided by an embodiment of the present utility model is described.

[0029] In one embodiment of the present invention, a large-diameter buried pipe internal support device includes three support rods 2, each of which has two ends configured to abut against the inner wall of a buried pipe 1. One of the three support rods 2 is vertically arranged, while the other two are symmetrically arranged in an X-shape. Each support rod 2 includes a threaded rod sleeve 201 and a screw rod 202. During installation, the length of the support rod 2 is adjusted by adjusting the length of the screw rod 202 extending from the rod sleeve 201, so that the two ends of the support rod 2 exactly abut against the inner wall of the buried pipe 1. The threaded connection design also facilitates removal of the support rod 2 from the buried pipe 1.

[0030] In this embodiment, each supporting rod 2 includes a rod sleeve 201 and a screw rod 202 threadedly connected to one end of the rod sleeve 201. In addition, a screw rod 202 can also be threadedly connected to each end of the rod sleeve 201.

[0031] like Figure 1 As shown, the three support rods 2 are abutted against the buried pipe 1 in a supporting manner. Since the inner and outer walls of the buried pipe 1 are coated with an anti-corrosion coating, welding is prohibited to avoid damaging the inner and outer anti-corrosion coatings of the buried pipe 1 during installation of the inner support rods 2. In this embodiment, the three inner support rods 2 are fixed to the buried pipe 1 in a supporting manner, which does not damage the inner and outer anti-corrosion coatings of the buried pipe 1.

[0032] When in use, the internal support device of this embodiment is installed in the underground pipeline 1 under the road section or the large equipment section, and extends 4-6m on both sides. An internal support device of this embodiment can be installed every 2m along the length of the buried pipeline 1. Figure 2 Specifically, one can enter the buried pipeline 1 through a manhole provided on the buried pipeline 1, and then perform the installation operation of the internal support device of this embodiment in the buried pipeline 1. The internal support device of this embodiment is suitable for large-diameter buried pipelines 1 with a diameter greater than 2m.

[0033] When in use, the internal support device for a large-diameter buried pipeline according to an embodiment of the present invention places three support rods 2 inside the buried pipeline 1 so that the two ends of the support rods 2 abut against the inner wall of the buried pipeline 1. Specifically, the length of the entire support rod 2 can be adjusted by adjusting the length of the screw 202 extending from the rod sleeve 201, so that the two ends of the support rod 2 can just abut against the inner wall of the buried pipeline 1. The vertically arranged support rod 2 can bear the vertical load on the buried pipeline 1, and the other two X-shaped symmetrically arranged support rods 2 can play a symmetrical supporting role on both sides of the vertically arranged support rod 2. The combined use of the three support rods 2 can effectively alleviate or even avoid the deformation of the buried pipeline 1, ensuring the safety of the buried pipeline 1 and preventing the pipeline welds of the buried pipeline 1 from being cracked due to external load pressure. After using the internal support device according to an embodiment of the present invention, the buried pipeline 1 can temporarily allow large equipment to pass through it, and this support method will not damage the anti-corrosion coating on the inner and outer walls of the buried pipeline 1. The internal support device for a large-diameter buried pipeline of the present invention has a simple structure, good economy, high convenience, and is easy to install and remove. After removal, the normal water flow and operation of the buried pipeline 1 will not be affected.

[0034] Furthermore, in this embodiment, both ends of each support rod 2 are connected to a bearing plate 3. On the one hand, the bearing plate 3 can increase the contact area between the end of the support rod 2 and the inner wall of the buried pipe 1, so that the supporting position of the support rod 2 in the buried pipe 1 is more stable and will not move easily; on the other hand, the bearing plate 3 can also bear the upper and lower side loads of the buried pipe 1.

[0035] Furthermore, in this embodiment, a rubber pad 4 is attached to the side of each support plate 3 proximal to the buried pipe 1 to prevent relative sliding between the support plate 3 and the inner wall of the buried pipe 1, thereby providing a more stable support structure. Furthermore, the rubber pad 4 protects the anti-corrosion coating on the inner wall of the buried pipe 1, preventing it from being removed due to scratches. The rubber pad 4 is typically 10 mm thick.

[0036] Furthermore, the internal support device of this embodiment includes a plurality of shims 5. These shims 5 are placed between the rubber pad 4 and the inner wall of the buried pipe 1, ensuring seamless contact between the support rods 2 and the buried pipe 1. This further enhances the stability of the internal support device and provides better support. The shims 5 may be made of steel or polytetrafluoroethylene sheet and have a thickness of approximately 5 mm.

[0037] Furthermore, in this embodiment, the angle between two adjacent support rods 2 is 30°-45°. Preferably, the angle between two adjacent support rods 2 is 30°, that is, the angle between the two symmetrical support rods 2 on the left and right and the vertically arranged support rod 2 in the middle is 30°, so as to achieve the optimal supporting effect.

[0038] Furthermore, in this embodiment, the rod sleeve 201 is a steel pipe, such as a thickened seamless steel pipe with a gauge of Φ159 and a wall thickness of 10 mm. The screw 202 is also made of steel. This provides the support rod 2 with a high structural strength, better able to bear the loads from the upper and lower sides of the buried pipeline 1. Accordingly, the bearing plates 3 are carbon steel plates, and the support rod 2 and the bearing plates 3 at its ends can be simply welded together to form a single piece.

[0039] Furthermore, in this embodiment, one end of the steel pipe is connected to a nut 203 that cooperates with the screw rod 202. During installation or disassembly, the screw rod 202 can be rotated to adjust the length of the screw rod 202 extending out of the nut 203 to adjust the length of the support rod 2.

[0040] The internal support device of this embodiment can be removed by simply adjusting the length of the support rod 2 before the buried pipeline 1 is put into operation, so that the two ends of the support rod 2 cannot abut against the inner wall of the buried pipeline 1. The support rod 2 and other supporting components can be removed. The removed internal support device can be reused, which is economical.

[0041] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A large diameter buried pipeline internal support device, characterized in that: It comprises three support rods, each of which has two ends for contacting the inner wall of the buried pipe; one of the three support rods is arranged vertically, and the other two are arranged symmetrically in an X shape; each support rod comprises a rod sleeve and a screw connected by a thread; the angle between two adjacent support rods is 30°-45°.

2. The large diameter buried pipeline inner support device according to claim 1, characterized in that: Both ends of each supporting rod are connected to a bearing plate.

3. The large diameter buried pipeline inner support device according to claim 2, characterized in that: A rubber pad is also connected to one side of each bearing plate close to the buried pipeline.

4. The large diameter buried pipeline inner support device according to claim 3, characterized in that: The invention also comprises a plurality of filling blocks, which are filled between the rubber pad and the inner wall of the buried pipeline.

5. The large diameter buried pipeline inner support device according to claim 4, characterized in that: The gap filling block is a steel plate or a polytetrafluoroethylene plate.

6. A large diameter buried pipeline inner support device according to any one of claims 1 to 5, characterized in that: The rod sleeve is a steel pipe.

7. The large diameter buried pipeline inner support device according to claim 6, characterized in that: One end of the steel pipe is connected to a nut that cooperates with the screw rod.

8. A large diameter buried pipeline inner support device according to any one of claims 2 to 5, characterized in that: The bearing plate is a carbon steel plate.

9. The large diameter buried pipeline inner support device according to claim 8, characterized in that: The bearing plates are welded to both ends of the supporting rod.

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