Pressure-resistant and low-temperature-resistant MPP electric power tube

Abstract

The utility model discloses a pressure-resistant and low-temperature-resistant MPP electric power tube, and particularly relates to the technical field of MPP electric power tubes, the MPP electric power tube comprises an outer tube body, the front end and the rear end of the outer tube body are respectively provided with a connecting mechanism, the outer side of the outer tube body is provided with a protection mechanism, the inner wall of the outer tube body is fixedly connected with a pressure-resistant supporting column, and the inner wall of the outer tube body is fixedly connected with the pressure-resistant supporting column. The two sides of the pressure-resistant supporting column are fixedly connected with protection separation arc plates. According to the pressure-resistant and low-temperature-resistant MPP electric power tube provided by the utility model, through the arrangement of the connecting mechanism, the device can be ensured to be stably connected with an external structure, and the overall structural strength is relatively higher; meanwhile, through the arranged protection mechanism, the equipment can have efficient corrosion resistance, the wear resistance degree can be greatly improved, and damage of external friction to the pipe body is reduced; and through the arranged mounting mechanism, the overall compressive strength of the pipe body can be enhanced, heat generated by the cable can stably flow in air in the pipe body, and heat preservation and low-temperature resistance are conducted on the electric power inner pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of MPP power pipes, in particular to a pressure-resistant and low-temperature-resistant MPP power pipe. Background Art

[0002] MPP power pipes use modified polypropylene as the main raw material. It is a construction project that does not require a large amount of dredging, digging, or damaging the road surface. It can be used to lay pipelines and cables in special areas such as roads, railways, buildings, and riverbeds. Compared with the traditional "trench digging and pipe laying method", trenchless power pipe projects are more in line with current environmental protection requirements, eliminating factors such as dust and traffic congestion caused by traditional construction. This technology can also be used to lay pipelines in areas where excavation operations cannot be carried out, such as historic sites protection areas, downtown areas, crop and farmland protection areas, highways, rivers, etc.

[0003] The prior art has the following problems.

[0004] 1. The existing pressure-resistant and low-temperature-resistant MPP power pipe has the problem of insufficient overall structural strength and insufficient stability in connection with the external structure;

[0005] 2. The existing pressure-resistant and low-temperature-resistant MPP power pipe has excellent electrical insulation, high heat deformation temperature and low-temperature impact performance, higher tensile and compressive resistance than HDPE, light weight, smoothness, low friction resistance and can be hot-melt welded. However, its operating temperature is affected by material properties and is limited to -5℃~70℃, which cannot meet the requirements of use in low-temperature environments below -5℃. Utility Model Content

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A pressure-resistant and low-temperature-resistant MPP electric pipe comprises an outer pipe body, the front and rear ends of the outer pipe body are both provided with connecting mechanisms, the outer side of the outer pipe body is provided with a protective mechanism, the inner wall of the outer pipe body is fixedly connected with a pressure-resistant support column, the two sides of the pressure-resistant support column are fixedly connected with protective separation arc plates, an air insulation cavity is opened on the side where the two protective separation arc plates are close to each other, and the inner side of the pressure-resistant support column is fixedly connected with a mounting mechanism.

[0008] Preferably, the connecting mechanism includes a mounting plate, one end of which is fixedly connected to the outer wall of the outer tube body, a connecting ring is provided on the side of the mounting plate away from the outer tube body, a supporting ring is provided on the upper end of the mounting plate, the inner wall of the supporting ring is threadedly connected with a connecting bolt, and the outer wall of the connecting bolt is sleeved with a spring.

[0009] Preferably, a side of the mounting plate away from the outer tube body is fixedly connected to a side of the connecting ring, and an upper end of the mounting plate is fixedly connected to a lower end of the supporting ring.

[0010] Preferably, the protective mechanism includes a corrosion-resistant layer, the inner side of the corrosion-resistant layer is fixedly connected to the outer side of the outer tube body, the outer wall of the corrosion-resistant layer is provided with a wear-resistant layer, the wear-resistant layer includes a steel wire layer and a polyvinyl chloride layer, the steel wire layer is arranged on the outer side of the corrosion-resistant layer, and the polyvinyl chloride layer is arranged on the outer side of the steel wire layer.

[0011] Preferably, the outer wall of the corrosion-resistant layer is fixedly connected to the inner wall of the wear-resistant layer.

[0012] Preferably, the corrosion-resistant layer is made of carbon fiber material, and the steel wire layer is steel wire distributed in an annular shape.

[0013] Preferably, the mounting mechanism includes an inner tube body, the outer wall of the inner tube body is fixedly connected to the inner wall of the pressure-resistant support column, the inner wall of the inner tube body is provided with a flame retardant layer, the inner wall of the flame retardant layer is provided with a breathable layer, the inner wall of the breathable layer is fixedly connected with a lubricating layer, and an arc groove is provided on the inner side of the lubricating layer.

[0014] Preferably, the inner wall of the inner tube body is fixedly connected to the outer wall of the flame retardant layer, and the inner wall of the flame retardant layer is fixedly connected to the outer wall of the air permeable layer.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model can ensure that the device can be stably connected to the external structure through the connection mechanism set up, and the overall structural strength is relatively higher; at the same time, the protective mechanism set up can make the device have high corrosion resistance, which can greatly improve the wear resistance and reduce the damage of the pipe body to the external friction, so that the pipeline is not easy to break and the service life is extended.

[0017] During the implementation of the utility model, the installation mechanism is arranged so that the device can enhance the overall compressive strength of the pipe body, and also allows the heat generated by the cable to flow stably through the air inside it, thereby keeping the inner pipe of the power insulated and resistant to low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection mechanism structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the protection mechanism structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation mechanism structure of the utility model;

[0022] Figure 5 It is a side view of the utility model.

[0023] In the figure: 1. outer tube body; 2. connecting mechanism; 3. protective mechanism; 4. pressure-resistant support column; 5. protective partition arc plate; 6. air insulation chamber; 7. installation mechanism; 21. installation plate; 22. connecting ring; 23. supporting ring; 24. connecting bolt; 25. spring; 31. corrosion-resistant layer; 32. wear-resistant layer; 321. steel wire layer; 322. polyvinyl chloride layer; 71. inner tube body; 72. flame-retardant layer; 73. breathable layer; 74. lubricating layer; 75. arc groove. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 , Figure 5 As shown, a pressure-resistant and low-temperature resistant MPP electric pipe comprises an outer pipe body 1. The front and rear ends of the outer pipe body 1 are both provided with connecting mechanisms 2. The connecting mechanism 2 enables the equipment to ensure that the device can be stably connected to the external structure, and the overall structural strength is relatively higher. A protective mechanism 3 is provided on the outside of the outer pipe body 1. The protective mechanism 3 enables the equipment to have high-efficiency corrosion resistance, can greatly improve the wear resistance, and reduce the damage to the pipe body caused by external friction, so that the pipeline is not easy to break and the service life is extended. A pressure-resistant support column 4 is fixedly connected to the inner wall of the outer pipe body 1. Protective separation arc plates 5 are fixedly connected to both sides of the pressure-resistant support column 4. An air insulation chamber 6 is opened on the side where the two protective separation arc plates 5 are close to each other. An installation mechanism 7 is fixedly connected to the inner side of the pressure-resistant support column 4. The installation mechanism 7 enables the equipment to enhance the overall compressive strength of the pipe body, and also enables the heat generated by the cable to flow stably in the air inside it, thereby insulating the inner pipe of the electric power and resisting low temperatures.

[0026] like Figure 2 As shown, the connection mechanism 2 includes a mounting plate 21, one end of which is fixedly connected to the outer wall of the outer tube body 1, a connecting ring 22 is provided on the side of the mounting plate 21 away from the outer tube body 1, a supporting ring 23 is provided on the upper end of the mounting plate 21, a connecting bolt 24 is threadedly connected to the inner wall of the supporting ring 23, and a spring 25 is sleeved on the outer wall of the connecting bolt 24;

[0027] The side of the mounting plate 21 away from the outer tube body 1 is fixedly connected to one side of the connecting ring 22 , and the upper end of the mounting plate 21 is fixedly connected to the lower end of the supporting ring 23 .

[0028] As can be known from the above, the two support rings 23 are provided with corresponding sockets, and springs 25 are fixedly inserted in the corresponding sockets, and the springs 25 are sleeved on the side walls of the connecting bolts 24. A plurality of connecting rings 22 are injection-molded in parallel on one side of the mounting plate 21 away from the outer tube body 1. Wires can be threaded through the connecting rings 22 to suspend the device for installation, thereby increasing the application scenarios of the device.

[0029] like Figure 3 As shown, the protection mechanism 3 includes a corrosion-resistant layer 31, the inner side of the corrosion-resistant layer 31 is fixedly connected to the outer side of the outer tube body 1, the outer wall of the corrosion-resistant layer 31 is provided with a wear-resistant layer 32, the wear-resistant layer 32 includes a steel wire layer 321 and a polyvinyl chloride layer 322, the steel wire layer 321 is provided on the outer side of the corrosion-resistant layer 31, and the polyvinyl chloride layer 322 is provided on the outer side of the steel wire layer 321;

[0030] The outer wall of the corrosion-resistant layer 31 is fixedly connected to the inner wall of the wear-resistant layer 32;

[0031] The corrosion-resistant layer 31 is made of carbon fiber material, and the steel wire layer 321 is steel wire distributed in an annular shape.

[0032] As can be seen from the above, the service life of the device can be increased by the cooperation of the corrosion-resistant layer 31 and the wear-resistant layer 32, thereby avoiding the wear of the existing power pipe after long-term use.

[0033] like Figure 4 As shown, the mounting mechanism 7 includes an inner tube body 71, the outer wall of the inner tube body 71 is fixedly connected to the inner wall of the pressure-resistant support column 4, the inner wall of the inner tube body 71 is provided with a flame retardant layer 72, the inner wall of the flame retardant layer 72 is provided with a breathable layer 73, the inner wall of the breathable layer 73 is fixedly connected with a lubricating layer 74, and the inner side of the lubricating layer 74 is provided with an arc groove 75;

[0034] The inner wall of the inner tube body 71 is fixedly connected to the outer wall of the flame retardant layer 72 , and the inner wall of the flame retardant layer 72 is fixedly connected to the outer wall of the air permeable layer 73 .

[0035] As can be seen from the above, the flame retardant layer 72 is made of asbestos mesh material, and flame retardant layers 72 are provided on both sides of the breathable layer 73. The breathable layer 73 is made of sponge gaskets. The double-layer flame retardant layer 72 further reduces the fire caused by the cable. At the same time, the sponge gasket can offset the vibration impact of the cable, thereby reducing the pressure from the inside of the pipeline and facilitating the heat dissipation of the cable.

[0036] The working principle of the utility model is as follows: first, a plurality of connecting bolts 24 are screwed to the mounting plate 21, and then the cable is passed through the interior of the outer tube body 1. When vibration occurs, the vibration will be transmitted to the spring 25 along the side wall of the connecting bolt 24. The elasticity of the plurality of springs 25 can buffer the vibration and avoid loosening, thereby ensuring that the device can be stably connected to the external structure. Then, through the set air insulation chamber 6, when the MPP power pipe is in use, the protective separation arc plate 5 is made of PE low-pressure polyethylene material to have a heat preservation effect, thereby increasing the low-temperature resistance of the MPP power pipe. Since the MPP power pipe is connected by hot melt, when the group pipe is installed and used, the MPP power pipe is connected by hot melt, and the air insulation chamber 6 is sealed. When used in a low-temperature environment, the air insulation chamber 6 is sealed, and the air inside it is stable and does not flow, so the inner tube body 71 is insulated and resistant to low temperatures, and supported by the pressure-resistant support column 4, the MPP is increased. The overall pressure resistance of the power pipe solves the problem that the operating temperature of the existing MPP power pipe is affected by the material properties and has certain limitations, and cannot meet the problem of being used in a low temperature environment below minus five degrees, and achieves better pressure resistance and low temperature resistance. A smooth arc groove 75 is arranged on the inner wall of the inner tube body 71, so that a gap is formed between adjacent cables arranged in the inner tube body 71, reducing deformation and loss caused by mutual squeezing and friction between the cables, and facilitating the circulation of internal air in the cable. When sealed, the contact with the cable further improves its thermal insulation effect. The lubricating layer 74 is also arranged, so that when the cable passes through the inner tube body 71, the friction between the cable and the inner wall of the inner tube body 71 can be reduced, thereby extending the service life of the cable. A flame retardant layer 72 and a breathable layer 73 are arranged in the inner tube body 71, and the flame retardant layer 72 is arranged on both sides of the breathable layer 73. The double-layer flame retardant layer 72 further reduces fires caused by cables.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure-resistant and low-temperature-resistant MPP power pipe, comprising an outer pipe body (1), characterized in that: The front and rear ends of the outer tube body (1) are both provided with connection mechanisms (2), the outer side of the outer tube body (1) is provided with a protection mechanism (3), the inner wall of the outer tube body (1) is fixedly connected to a pressure-resistant support column (4), both sides of the pressure-resistant support column (4) are fixedly connected to protection partition arc plates (5), an air insulation cavity (6) is provided on the side where the two protection partition arc plates (5) are close to each other, and the inner side of the pressure-resistant support column (4) is fixedly connected to a mounting mechanism (7).

2. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 1 is characterized by: The connecting mechanism (2) comprises a mounting plate (21), one end of the mounting plate (21) being fixedly connected to the outer wall of the outer tube body (1), a connecting ring (22) being provided on a side of the mounting plate (21) away from the outer tube body (1), a supporting ring (23) being provided at the upper end of the mounting plate (21), a connecting bolt (24) being threadedly connected to the inner wall of the supporting ring (23), and a spring (25) being sleeved on the outer wall of the connecting bolt (24).

3. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 2 is characterized by: The side of the mounting plate (21) away from the outer tube body (1) is fixedly connected to one side of the connecting ring (22), and the upper end of the mounting plate (21) is fixedly connected to the lower end of the supporting ring (23).

4. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 1 is characterized by: The protection mechanism (3) comprises a corrosion-resistant layer (31), the inner side of the corrosion-resistant layer (31) is fixedly connected to the outer side of the outer tube body (1), the outer wall of the corrosion-resistant layer (31) is provided with a wear-resistant layer (32), the wear-resistant layer (32) comprises a steel wire layer (321) and a polyvinyl chloride layer (322), the steel wire layer (321) is provided on the outer side of the corrosion-resistant layer (31), and the polyvinyl chloride layer (322) is provided on the outer side of the steel wire layer (321).

5. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 4 is characterized in that: The outer wall of the corrosion-resistant layer (31) is fixedly connected to the inner wall of the wear-resistant layer (32).

6. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 5 is characterized by: The corrosion-resistant layer (31) is made of carbon fiber material, and the steel wire layer (321) is steel wires distributed in an annular shape.

7. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 1 is characterized by: The mounting mechanism (7) comprises an inner tube body (71), the outer wall of the inner tube body (71) is fixedly connected to the inner wall of the pressure-resistant support column (4), the inner wall of the inner tube body (71) is provided with a flame retardant layer (72), the inner wall of the flame retardant layer (72) is provided with a breathable layer (73), the inner wall of the breathable layer (73) is fixedly connected with a lubricating layer (74), and the inner side of the lubricating layer (74) is provided with an arc groove (75).

8. The pressure-resistant and low-temperature-resistant MPP power pipe according to claim 7, characterized in that: The inner wall of the inner tube body (71) is fixedly connected to the outer wall of the flame retardant layer (72), and the inner wall of the flame retardant layer (72) is fixedly connected to the outer wall of the air permeable layer (73).

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