An anti-floating structure for directly buried hot water pipes in high water level areas

Abstract

The application discloses an anti-floating structure for a direct-buried hot water pipeline in a high water level area, which comprises a counterweight, a pipeline adapting groove arranged in the counterweight, and a movable groove coaxially arranged with the pipeline adapting groove, at least four pulleys arranged in the movable groove and equidistantly spaced along the circumferential direction of the movable groove, and a connecting sleeve for fixing the pulleys to the outer wall of the hot water pipeline, wherein the pulleys are abutted on the wall of the movable groove and can roll along the axial direction of the movable groove, and the pipeline adapting groove is provided with a sliding sealing structure at both ends. In view of the technical problem that the existing hot water pipeline is prone to damage and leakage due to thermal expansion, the application provides an anti-floating structure for a direct-buried hot water pipeline in a high water level area, which can adapt to the free thermal expansion of the hot water pipeline, has the pipeline anti-floating effect, and avoids local buckling or arching of the hot water pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline construction, and in particular to an anti-floating structure for directly buried hot water pipelines in high water level areas. Background Art

[0002] Directly buried hot water pipes in high water level areas need to consider measures to prevent the pipes from floating when empty. The existing solution is to place saddle-shaped counterweights above the directly buried hot water pipes at a certain distance.

[0003] This solution places saddle-shaped counterweights directly above direct-buried hot water pipes, which can cause the pipe's insulation to deform and compress, while also damaging the pipe's polyethylene sheath. Furthermore, the saddle-shaped counterweights and the pipe cannot move relative to each other, restricting the pipe's thermal expansion and contraction, leading to localized buckling or arching of the pipe, which can damage and leak the pipe. Summary of the Invention

[0004] 1. Technical problem to be solved by the invention

[0005] In response to the technical problem that existing hot water pipes are easily damaged and leaked due to thermal expansion and contraction, the present invention provides an anti-floating structure for directly buried hot water pipes in high water level areas. It can adapt to the free thermal expansion and contraction of the hot water pipes, and at the same time has an anti-floating effect on the pipes, avoiding local buckling or arching of the hot water pipes.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the technical solution provided by the present invention is:

[0008] An anti-floating structure for directly buried hot water pipes in high water level areas, comprising a counterweight block, a pipe adapting groove and a movable groove arranged coaxially with the pipe adapting groove, and at least four pulleys arranged in the movable groove and spaced evenly along the circumferential direction of the movable groove, and a connecting sleeve for fixing several of the pulleys to the outer wall of the hot water pipe, the pulleys abutting against the wall of the movable groove and being able to roll along the axial direction of the movable groove, and sliding sealing structures being provided at both ends of the pipe adapting groove.

[0009] Optionally, the walls of the pipe adapting groove and the movable groove are both provided with steel sheaths.

[0010] Optionally, the sliding sealing structure includes a sliding sealing ring provided between the counterweight block and the hot water pipe.

[0011] Optionally, the sliding sealing structure further includes a flexible filler filled between the counterweight block and the hot water pipe.

[0012] Optionally, the connecting sleeve includes a polyethylene sleeve and a fixing belt embedded in the outer wall of the polyethylene sleeve, and the fixing belt is provided with a plurality of pulley brackets for mounting the pulley.

[0013] Optionally, water-stop wing rings are provided at both ends of the counterweight block.

[0014] Optionally, the counterweight block includes an upper counterweight block and a lower counterweight block that are detachably connected together, and a connecting piece for connecting the upper counterweight block and the lower counterweight block.

[0015] Optionally, both the upper counterweight and the lower counterweight are provided with lifting rings.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The anti-floating structure of the directly buried hot water pipe in high water level areas allows relative movement between the hot water pipe and the counterweight to adapt to the free thermal expansion and contraction of the hot water pipe, while having an anti-floating effect on the pipe. The arrangement of a plurality of pulleys can further limit the thermal expansion and contraction direction of the hot water pipe, thereby avoiding local buckling or arching of the hot water pipe. The sliding sealing structures at both ends can also prevent soil and the like from entering the sliding surface to hinder the normal rolling of the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of an anti-floating structure for directly buried hot water pipes in high water level areas proposed in an embodiment of the present invention Figure 1 ;

[0020] Figure 2 A cross-sectional view of an anti-floating structure for directly buried hot water pipes in high water level areas proposed in an embodiment of the present invention Figure 2 ;

[0021] 1. Counterweight; 1a. Pipe adapter groove; 1b. Movable groove; 2. Pulley; 3. Connecting sleeve; 4. Steel sheath; 5. Sliding seal; 6. Flexible filler; 7. Polyethylene sleeve; 8. Fixing belt; 9. Pulley bracket; 10. Water stop wing ring; 11. Upper counterweight; 12. Lower counterweight; 13. Connector; 14. Lifting ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0023] It should be noted that when an element is referred to as being "fixed on", "set on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. Furthermore, when an element is considered to be "fixedly connected" to another element, the two may be fixed in a detachable manner or in a non-detachable manner, such as socketing, snap-fitting, integrally molded fixing, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The “first” and “second” involved in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0026] Combined with attachment Figure 1 and 2, an anti-floating structure for directly buried hot water pipes in high water level areas of this embodiment, includes a counterweight block 1, a pipe adapting groove 1a is provided in the counterweight block 1, and a movable groove 1b is arranged coaxially with the pipe adapting groove, the pipe adapting groove 1a passes through the counterweight block 1, the movable groove 1b is arranged in the middle of the counterweight block 1, and the diameter of the movable groove 1b is larger than the diameter of the pipe adapting groove 1a, and also includes at least four pulleys 2 arranged in the movable groove 1b and arranged at equal intervals along the circumferential direction of the movable groove 1b (several pulleys 2 are distributed in the movable groove 1b at equal intervals, and if the number of pulleys 2 is four, the angle between two adjacent pulleys 2 is 90°), and a device for fixing the plurality of pulleys 2 to the hot water pipe. The connecting sleeve 3 on the outer wall of the pipe is fixedly connected to the outer wall of the hot water pipe, and the pulley 2 is installed on the connecting sleeve 3 so as to rotate relatively. The pulley 2 abuts against the wall of the movable groove 1b and can roll along the axial direction of the movable groove 1b. Both ends of the pipe adaptation groove 1a are provided with sliding sealing structures; the anti-floating structure of the direct-buried hot water pipe in high water level areas allows relative movement between the hot water pipe and the counterweight 1 to adapt to the free thermal expansion and contraction of the hot water pipe, and at the same time has the anti-floating effect of the pipe, and the setting of several pulleys 2 can further limit the thermal expansion and contraction direction of the hot water pipe to avoid local buckling or arching of the hot water pipe, and the sliding sealing structures at both ends prevent soil and the like from entering the sliding surface to hinder the normal rolling of the pulley 2.

[0027] As an optional solution of the present invention, a steel sheath 4 is provided on the wall of the pipe adaptation groove 1a and the movable groove 1b. Since the counterweight block 1 is generally made of cast concrete and its surface is uneven, it will cause the pulley 2 to vibrate violently when rolling as a guide surface of the pulley 2, thereby affecting the stability of the hot water pipe. Therefore, in this embodiment, the steel sheath 4 is used instead of the counterweight block 1 to contact the pulley 2, so that the pulley 2 is more stable and vibrates less when rolling.

[0028] As an optional solution of the present invention, the sliding sealing structure includes a sliding sealing ring 5 provided between the counterweight block 1 and the hot water pipe. The sliding sealing ring 5 is fixedly connected to the counterweight block 1 or the hot water pipe, thereby ensuring the sealing of the hot water pipe when it moves relative to the counterweight block 1. On this basis, the sliding sealing structure also includes a flexible filler 6 filled between the counterweight block 1 and the hot water pipe. The flexible filler 6 can be an existing asphalt hemp flexible material to better block the soil.

[0029] As an optional solution of the present invention, the connecting sleeve 3 includes a polyethylene sleeve 7 and a fixing belt 8 embedded in the outer wall of the polyethylene sleeve 7. The polyethylene sleeve 7 is hot-melt connected to the polyethylene outer sheath on the outer wall of the hot water pipe to achieve a fixed connection. The fixing belt 8 is a stainless steel belt. The fixing belt 8 is provided with a number of pulley brackets 9 for installing the pulley 2. The pulley 2 can be rotatably installed on the pulley bracket 9. The setting of the polyethylene sleeve 7 can ensure the connection strength with the hot water pipe. Otherwise, the fixing belt 8 will slide relatively when directly put on the outer wall of the hot water pipe, and the polyethylene sleeve 7 has a certain elasticity and can adapt to processing errors within a certain range to ensure that the pulley 2 is tightly attached to the wall of the movable groove 1b. At the same time, the fixing belt 8 embedded in the outer wall of the polyethylene sleeve 7 can effectively improve the fixing effect of the pulley bracket 9 to ensure the normal rolling of the pulley 2.

[0030] As an optional solution of the present invention, both ends of the counterweight block 1 are provided with water-stop wing rings 10. After the action of the rigid water-stop wing rings 10, the middle part of the counterweight block 1 is no longer easily bent, which plays a very important role in protecting the counterweight block 1.

[0031] As an optional solution of the present invention, in order to facilitate the installation of the counterweight block 1, the counterweight block 1 includes an upper counterweight block 11 and a lower counterweight block 12 that are detachably connected together, and a connecting piece 13 for connecting the upper counterweight block 11 and the lower counterweight block 12. The connecting piece 13 can be a number of fixing bolts. During pipeline construction, the lower counterweight block 12 is first placed in the pipe trench, and the hot water pipe with the pulley 2 is placed on the lower counterweight block 12. Finally, the upper counterweight block 11 is placed on the hot water pipe. The counterweight blocks 1 are arranged at intervals along the length direction of the hot water pipe.

[0032] As an optional solution of the present invention, in order to facilitate construction and lifting, the upper counterweight block 11 and the lower counterweight block 12 are both provided with lifting rings 14.

[0033] As an optional solution of the present invention, the material of the pulley bracket 9 is made of the same material as the pipe material. When the pulley bracket 9 is not heated, the pulley 2 installed on the pulley bracket 9 does not contact the wall of the movable groove 1b, but when the pulley bracket 9 is heated, the pulley bracket 9 will extend a short distance to make the pulley 2 contact the wall of the movable groove 1b. That is to say, when the hot water pipe has no thermal expansion and contraction, the pulley 2 is not subjected to force and does not play a role. At this time, the gravity of the hot water pipe is borne entirely by the counterweight frame 1. Only when the hot water pipe is heated and expanded and contracted, the pulley 2 will be accepted and play a guiding role. At this time, part of the gravity of the hot water pipe is borne by the pulley 2, especially the pulley 2 located at the bottom bears the most gravity, thereby ensuring that the pulley 2 is in close contact with the movable groove 1b. Together, they play a guiding and limiting role. If the pulley bracket 9 is of fixed size and is made of a material with no obvious thermal expansion and contraction phenomenon, it is necessary to ensure that the pulley 2 is always in contact with the wall of the movable groove 1b during installation. At the same time, in order to play a better guiding and limiting role, the gravity of the hot water pipe needs to be always applied to the pulley 2, which may easily cause the pulley bracket 9 and the pulley 2 to be subjected to long-term stress and deform to a certain extent, thereby affecting its guiding and limiting role. If the expansion and contraction of the pulley 2 is controlled by electric control, it will lead to increased costs and easy damage. At the same time, in this embodiment, the pulley bracket 9 is made of the same material as the hot water pipe, which can prevent the pulley bracket 9 from thermally expanding and contracting before the hot water pipe has thermally expanded and contracted, so as to achieve obvious thermal expansion and contraction of the hot water pipe and the pulley bracket 9 at the same time at a certain temperature.

[0034] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An anti-floating structure for directly buried hot water pipes in high water level areas, characterized by: The device comprises a counterweight block, wherein the counterweight block is provided with a pipe adapting groove and a movable groove arranged coaxially with the pipe adapting groove, further comprising at least four pulleys arranged in the movable groove and spaced evenly along the circumference of the movable groove, and a connecting sleeve for fixing the plurality of pulleys to the outer wall of the hot water pipe, wherein the pulleys abut against the wall of the movable groove and can roll along the axial direction of the movable groove, and sliding sealing structures are provided at both ends of the pipe adapting groove; The connecting sleeve includes a polyethylene sleeve and a fixing belt embedded in the outer wall of the polyethylene sleeve, and the fixing belt is provided with a plurality of pulley brackets for mounting the pulley; Both ends of the counterweight block are provided with water-stop wing rings.

2. The anti-floating structure for directly buried hot water pipes in high water level areas according to claim 1, characterized in that: The walls of the pipeline adapting groove and the movable groove are both provided with steel sheaths.

3. The anti-floating structure for directly buried hot water pipes in high water level areas according to claim 1, characterized in that: The sliding sealing structure includes a sliding sealing ring arranged between the counterweight block and the hot water pipe.

4. The anti-floating structure for directly buried hot water pipes in high water level areas according to claim 3, characterized in that: The sliding sealing structure further includes a flexible filling material filled between the counterweight block and the hot water pipe.

5. The anti-floating structure for directly buried hot water pipes in high water level areas according to any one of claims 1 to 4, characterized in that: The counterweight block includes an upper counterweight block and a lower counterweight block that are detachably connected together, and a connecting piece for connecting the upper counterweight block and the lower counterweight block.

6. The anti-floating structure for directly buried hot water pipes in high water level areas according to claim 5, characterized in that: The upper counterweight block and the lower counterweight block are both provided with lifting rings.

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