Direct buried pipe with polyurethane foam insulating layer
The design of direct-buried pipes with polyurethane foam insulation layer solves the connection difficulty problem caused by the complex insulation structure of existing direct-buried pipes, achieves convenient connection, reduces heat loss and anti-corrosion effects, and improves the installation convenience and durability of the pipelines.
Patent Information
- Application Number
- CN202423029074.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The insulation structure of existing direct buried pipes in urban heating, water supply and other fields is complex, which affects pipeline connections, increases weight and pressure, and makes installation difficult.
The direct buried pipe with polyurethane foam insulation layer is adopted. Through the design of connecting components and composite components, including polyethylene outer sheath, polyurethane foam inner layer and galvanized steel anti-corrosion layer, the insulation, corrosion resistance and lightweight of the pipeline are achieved. The connection is convenient with the use of connecting bolts, nuts and spring rod structure.
It realizes convenient connection of pipelines, reduces heat loss, lowers energy consumption, improves the durability and safety of pipelines, and prevents corrosion and moisture intrusion.
Smart Images
Figure CN223331320U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of direct-buried pipes, in particular to a direct-buried pipe with a polyurethane foam insulation layer. Background Art
[0002] Direct buried pipe refers to a type of pipe in which the pipeline system is buried directly in the underground soil and does not require external brackets or overhead supports. This type of pipe is widely used in urban heating, water supply, drainage, natural gas transportation, oil transportation and other fields. The main feature of direct buried pipe is that by burying the pipe deep underground, the pipe is prevented from being exposed to various factors in the external environment, such as wind, sun, mechanical damage, etc., thereby improving the safety and durability of the pipe.
[0003] Direct buried pipes in the prior art, when used in urban heating, water supply and other fields, usually require insulation treatment of the medium transported inside the pipe. However, current insulation methods usually rely on adding complex insulation structures to the outside of the direct buried pipes, which is often limited in effect. In addition, the addition of external insulation structures not only increases the overall weight of the pipe, but may also cause an increase in pressure inside the pipe, making the pipe face greater difficulties during installation, especially when connecting the pipes. Due to the increase in weight and pressure of the pipes, it is easy to cause installation inconvenience.
[0004] To this end, we provide polyurethane foam insulation layer direct buried pipes to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a polyurethane foam insulation layer directly buried pipe, which solves the problem of the direct buried pipe in the prior art having a complex insulation structure and affecting the pipeline connection through the cooperation of the connecting component and the composite component.
[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions.
[0007] The utility model is a polyurethane foam insulation layer directly buried pipe, comprising a pipe, one end of the pipe is fixedly connected to a first connecting head, and the other end of the pipe is provided with a second connecting head; one end of the pipe is provided with a connecting assembly, the connecting assembly comprises a connecting bolt, the connecting bolt is fixedly connected to the surface of the second connecting head, one side of the connecting bolt is fixedly connected to a docking block, the surface of the first connecting head is threadedly connected to a nut, one side of the inner cavity of the nut is fixedly connected to a spring rod, and the free end of the spring rod is fixedly connected to a semicircular protrusion; a composite assembly is provided in the inner cavity of the pipe, the composite assembly comprises an outer protective layer, the outer protective layer is fixedly connected to the surface of the pipe, the inner cavity of the outer protective layer is fixedly connected to a foam layer, the inner cavity of the foam layer is fixedly connected to an anti-corrosion layer, and the composite assembly is composited by the outer protective layer, the foam layer and the anti-corrosion layer.
[0008] The utility model is further configured such that a sealing groove is fixedly connected to one side of the inner cavity of the pipeline, a sealing ring is fixedly connected to one end of the second connector, and one side of the sealing ring is slidably connected to the inner cavity of the sealing groove.
[0009] The present invention is further configured such that a positioning hole is provided on one side of the first connector, and one side of the semicircular protrusion is slidably connected to the inner cavity of the positioning hole.
[0010] The utility model is further configured such that a first thread is provided on one side of the inner cavity of the pipe, a second thread is provided on one side of the surface of the second connector, and the surface of the second connector and the inner cavity of the pipe are connected via the first thread and the second thread.
[0011] The utility model is further configured such that a sealing sleeve is fixedly connected to one side of the nut, and the spring rod is fixedly connected to the inner cavity of the sealing sleeve.
[0012] The utility model is further configured such that an extension hole is provided on one side of the sealing sleeve, and one side of the semicircular protrusion extends through the inner cavity of the extension hole to the inner cavity of the positioning hole.
[0013] The utility model is further configured such that the material of the outer protective layer is polyethylene, the material of the foam layer is polyurethane foam, and the material of the anti-corrosion layer is galvanized steel.
[0014] The utility model has the following beneficial effects.
[0015] 1. The utility model can connect two pipes by inserting one end of the second connector with a sealing ring into the pipe and inserting the sealing ring into the sealing groove. By screwing the nut on the surface of the first connector, the connecting bolt and the first connector can be connected. When the nut is screwed, the semicircular protrusion at the free end of the spring rod can be inserted into the positioning hole on one side of the first connector, so as to facilitate the positioning of the nut and prevent the first connector and the second connector from loosening after the two pipes are connected.
[0016] 2. The utility model can effectively resist external pressure, corrosion and moisture intrusion through the outer protective layer of polyethylene material. The foam layer of polyurethane foam material inside the outer protective layer can effectively reduce heat loss, ensure the temperature of the medium transported in the pipeline is stable, and reduce energy consumption. The anti-corrosion layer of galvanized steel material is used to transmit the medium to prevent corrosion caused by external factors, thereby achieving the effect of thermal insulation and anti-corrosion. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.
[0018] Figure 1 This is a three-dimensional image of a direct-buried pipe with polyurethane foam insulation layer.
[0019] Figure 2 This is an exploded view of the first and second connectors in the direct-buried pipe with polyurethane foam insulation layer.
[0020] Figure 3 This is an exploded view of the nut and the second connector in the direct-buried pipe with polyurethane foam insulation layer.
[0021] Figure 4 This is a cross-sectional view of the sealing sleeve in the directly buried pipe with polyurethane foam insulation layer.
[0022] Figure 5 Schematic diagram of the structure of the composite component of the direct-buried pipe with polyurethane foam insulation layer.
[0023] In the accompanying drawings: 1. Pipe; 2. First connector; 3. Second connector; 4. Connecting bolt; 5. Docking block; 6. Nut; 7. Spring rod; 8. Semicircular protrusion; 9. Outer protective layer; 10. Foam layer; 11. Anti-corrosion layer; 12. Sealing groove; 13. Sealing ring; 14. Sealing sleeve. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0025] Example 1
[0026] See also Figure 1-5 The utility model is a polyurethane foam insulation layer direct-buried pipe, comprising a pipe 1, one end of the pipe 1 being fixedly connected to a first connecting head 2, and the other end of the pipe 1 being provided with a second connecting head 3; a connecting assembly is provided at one end of the pipe 1, the connecting assembly comprising a connecting bolt 4, the connecting bolt 4 being fixedly connected to the surface of the second connecting head 3, one side of the connecting bolt 4 being fixedly connected to a docking block 5, a nut 6 being threadedly connected to the surface of the first connecting head 2, a spring rod 7 being fixedly connected to one side of the inner cavity of the nut 6, and a semicircular protrusion 8 being fixedly connected to the free end of the spring rod 7; a composite assembly is provided in the inner cavity of the pipe 1, the composite assembly comprising an outer protective layer 9, the outer protective layer 9 being fixedly connected to the surface of the pipe 1, a foam layer 10 being fixedly connected to the inner cavity of the outer protective layer 9, an anti-corrosion layer 11 being fixedly connected to the inner cavity of the foam layer 10, and the composite assembly is composed of the outer protective layer 9, the foam layer 10 and the anti-corrosion layer 11.
[0027] Specifically: the first connector 2 is fixed to one end of the pipe 1, and the second connector 3 is connected through a first thread in the pipe 1 and a second thread on one side of the surface of the second connector 3. The connecting bolt 4 is the same size as the first connector 2 and has the same thread, so that the nut 6 connects the second connector 3 and the first connector 2 together. There are six spring rods 7 and six semicircular protrusions 8 to facilitate positioning of the nut 6. The outer protective layer 9, foam layer 10 and anti-corrosion layer 11 can insulate, prevent corrosion and resist pressure for the medium transported in the pipe 1, and the docking block 5 can limit the nut 6.
[0028] Example 2
[0029] See also Figure 1-5 On the basis of Example 1, a sealing groove 12 is fixedly connected to one side of the inner cavity of the pipe 1, a sealing ring 13 is fixedly connected to one end of the second connecting head 3, and one side of the sealing ring 13 is slidably connected to the inner cavity of the sealing groove 12. A positioning hole is provided on one side of the first connecting head 2, and one side of the semicircular protrusion 8 is slidably connected to the inner cavity of the positioning hole. A first thread is provided on one side of the inner cavity of the pipe 1, and a second thread is provided on one side of the surface of the second connecting head 3. The surface of the second connecting head 3 and the inner cavity of the pipe 1 are connected through the first thread and the second thread. A sealing sleeve 14 is fixedly connected to one side of the nut 6, and the spring rod 7 is fixedly connected to the inner cavity of the sealing sleeve 14. An extension hole is provided on one side of the sealing sleeve 14, and one side of the semicircular protrusion 8 extends through the inner cavity of the extension hole to the inner cavity of the positioning hole. The material of the outer protective layer 9 is polyethylene, the material of the foam layer 10 is polyurethane foam, and the material of the anti-corrosion layer 11 is galvanized steel.
[0030] Specifically: the sealing groove 12 is opened inside the pipe 1. When one end of the first connector 2 extends into the pipe 1, the sealing ring 13 can extend into the sealing groove 12 to prevent water leakage or heat loss between the first connector 2 and the second connector 3. The sealing sleeve 14 is fixed on one side of the nut 6, and the inner ring slides in contact with the surface of the pipe 1. The spring rod 7 and semicircular protrusion 8 arranged inside can screw the nut 6 to the surface of the second connector 3 for positioning and prevent the nut 6 from loosening. The polyethylene material can effectively resist external pressure, corrosion and moisture intrusion. The polyurethane foam material is light and has a low thermal conductivity and good antifreeze effect, which is convenient for heat preservation. The galvanized steel has strong pressure resistance.
[0031] The working principle of the utility model is as follows: when it is necessary to connect and install two polyurethane foam insulation layer directly buried pipes, first insert the second connector 3 of the pipe 1 to be connected, and one end with the sealing ring 13 into one end of the pipe 1 fixed with the first connector 2, so that the sealing ring 13 can be inserted into the sealing groove 12, so as to seal the connection and prevent water leakage, and then screw the nut 6, the nut 6 fastens the first connector 2 and the connecting bolt 4, so that the first connector 2 and the second connector 3 can be connected together, thereby connecting the two pipes 1, and when the nut 6 is screwed, the sealing sleeve 14 will move with it, so that the semicircular protrusion 8 at one end of the spring rod 7 can be inserted into the positioning hole, so as to position the nut 6 and prevent it from loosening.
[0032] When the polyurethane foam insulation layer direct buried pipe is in use, the outer protective layer 9 on the outer layer of the pipe 1 can effectively resist external pressure, corrosion and moisture intrusion, protect the pipe 1, the foam layer 10 made of polyurethane foam material can insulate the transported medium, and the anti-corrosion layer 11 made of galvanized steel material can prevent the inside of the pipe 1 from corrosion due to external factors, thereby improving the practicality of the pipe 1.
[0033] The standard parts used in the present invention can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatically controlled by a control unit. The control circuit of the control unit can be implemented by simple programming by technicians in this field, which is common knowledge in this field. Therefore, the control method and circuit connection are no longer explained in detail in the present invention.
[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to only the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.
Claims
1. A polyurethane foam insulation layer directly buried pipe, comprising a pipe (1), characterized in that: One end of the pipeline (1) is fixedly connected to a first connector (2), and the other end of the pipeline (1) is provided with a second connector (3); A connecting assembly is provided at one end of the pipe (1), the connecting assembly comprising a connecting bolt (4), the connecting bolt (4) being fixedly connected to the surface of the second connector (3), a docking block (5) being fixedly connected to one side of the connecting bolt (4), a nut (6) being threadedly connected to the surface of the first connector (2), a spring rod (7) being fixedly connected to one side of the inner cavity of the nut (6), and a semicircular protrusion (8) being fixedly connected to the free end of the spring rod (7); The inner cavity of the pipeline (1) is provided with a composite component, the composite component includes an outer protective layer (9), the outer protective layer (9) is fixedly connected to the surface of the pipeline (1), the inner cavity of the outer protective layer (9) is fixedly connected to a foam layer (10), and the inner cavity of the foam layer (10) is fixedly connected to an anti-corrosion layer (11), and the composite component is composed of the outer protective layer (9), the foam layer (10) and the anti-corrosion layer (11).
2. The polyurethane foam insulation layer directly buried pipe according to claim 1, characterized in that: One side of the inner cavity of the pipe (1) is fixedly connected to a sealing groove (12), one end of the second connector (3) is fixedly connected to a sealing ring (13), and one side of the sealing ring (13) is slidably connected to the inner cavity of the sealing groove (12).
3. The polyurethane foam insulation layer directly buried pipe according to claim 1, characterized in that: A positioning hole is provided on one side of the first connector (2), and one side of the semicircular protrusion (8) is slidably connected to the inner cavity of the positioning hole.
4. The polyurethane foam insulation layer directly buried pipe according to claim 1, characterized in that: A first thread is provided on one side of the inner cavity of the pipe (1), a second thread is provided on one side of the surface of the second connector (3), and the surface of the second connector (3) and the inner cavity of the pipe (1) are connected via the first thread and the second thread.
5. The polyurethane foam insulation layer directly buried pipe according to claim 1, characterized in that: A sealing sleeve (14) is fixedly connected to one side of the nut (6), and the spring rod (7) is fixedly connected to the inner cavity of the sealing sleeve (14).
6. The polyurethane foam insulation layer directly buried pipe according to claim 5, characterized in that: An extension hole is provided on one side of the sealing sleeve (14), and one side of the semicircular protrusion (8) extends through the inner cavity of the extension hole to the inner cavity of the positioning hole.
7. The polyurethane foam insulation layer directly buried pipe according to claim 1, characterized in that: The material of the outer protective layer (9) is polyethylene, the material of the foam layer (10) is polyurethane foam, and the material of the anti-corrosion layer (11) is galvanized steel.