Enhanced MPP cable protection pipe used in ultralow temperature environment

Abstract

The utility model relates to the field of cable protection tubes, in particular to an enhanced MPP cable protection tube used in an ultralow temperature environment. The device comprises a protection tube; a limiting block is arranged on the protection pipe, a clamping assembly and a clamping ring are arranged on the outer barrel, an inner barrel section is arranged in the outer barrel and fixedly connected with the clamping assembly, the space between the outer barrel and the inner barrel section is filled with a heat insulation material, and a guide rail is arranged on the inner wall of the inner barrel section; by arranging the upper inner cylinder section and the lower inner cylinder section and arranging the clamping assemblies on the inner cylinder sections, a gap exists between the outer cylinder and the inner cylinder sections, a buffer space is provided for thermal expansion and cold contraction, the space between the outer cylinder and the inner cylinder sections is filled with a thermal insulation material, and the connecting position is further protected; therefore, the problem that the connection part of the existing cable protection pipe is easy to break due to the influence of thermal expansion and cold contraction can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection pipes, and specifically to an enhanced MPP cable protection pipe used in ultra-low temperature environments. Background Technique

[0002] MPP cable protection pipes are a new type of material, mainly used to protect and support power cables. They are made of hard polyvinyl chloride pipes with MPP resin (modified polypropylene) as the main raw material.

[0003] In actual use, the existing MPP cable protection pipes are often connected by hot melting, and the joints are prone to breakage due to the influence of thermal expansion and contraction, which is not convenient for use in low-temperature environments and affects the life and safety of the cables. At the same time, when the cable protection pipes need to be disassembled during the maintenance stage, they often need to be cut, damaging the original protection pipes and increasing the cost.

[0004] Therefore, the utility model provides an enhanced MPP cable protection pipe used in ultra-low temperature environments to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an enhanced MPP cable protection pipe used in ultra-low temperature environments to solve the problems in the background technique that the joints of the existing cable protection pipes are prone to breakage due to the influence of thermal expansion and contraction of temperature and the disassembly cost is high.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An enhanced MPP cable protection pipe used in ultra-low temperature environments, including a protection pipe body.

[0007] To solve the problems that the joints of the existing cable protection pipes are prone to breakage due to the influence of thermal expansion and contraction of temperature and the disassembly cost is high, it further includes an outer cylinder. A limiting block is arranged on the protection pipe body. A clamping assembly and a clamping ring are arranged on the outer cylinder. Inner cylinder petals are arranged in the outer cylinder, and the inner cylinder petals are fixedly connected with the clamping assembly. A heat insulation material is filled between the outer cylinder and the inner cylinder petals. Guide rails are arranged on the inner wall of the inner cylinder petals. By arranging upper and lower inner cylinder petals and a clamping assembly on the inner cylinder petals, there is a gap between the outer cylinder and the inner cylinder petals, providing a buffer space for thermal expansion and contraction. And a heat insulation material is filled between the outer cylinder and the inner cylinder petals to further protect the joints, so as to effectively solve the problem that the joints of the existing cable protection pipes are prone to breakage due to the influence of thermal expansion and contraction of temperature.

[0008] As a further improvement of the technical solution, the clamping assembly includes a limit box fixedly connected inside the outer cylinder. A wedge block is slidably connected inside the limit box. One end of the wedge block is provided with a wedge-shaped structure, and the other end is fixedly connected to one end of a spring. The other end of the spring is fixedly connected to the inner cylinder flap. By providing the clamping assembly, the installation and disassembly of the cable protection pipe can be facilitated. During installation, only the wedge block needs to be squeezed, and then the inner cylinder flap is squeezed through the spring to clamp and fasten the cable. At the same time, the spring can provide a buffer space for the thermal expansion and contraction effect of the connection joint.

[0009] As a further improvement of the technical solution, both ends of the outer surface of the outer cylinder are threaded structures with opposite thread directions, and the clamping ring is threadedly connected to the outer cylinder. By providing the clamping ring and threadedly sleeving the clamping ring on the outer cylinder, during disassembly or installation, only the clamping ring needs to be rotated to squeeze or release the wedge block, and then the inner cylinder flap can be squeezed and fastened or released through the spring.

[0010] As a further improvement of the technical solution, the limit block is adapted to the guide rail. The guide rail is an L-shaped structure and is arranged at both ends of the inner wall of the inner cylinder flap. The L-shaped parts of the two guide rails are parallel to each other but in opposite directions. By providing the guide rail and the limit block, a pre-installation and pre-fastening effect can be achieved on the protection pipe body. The L-shaped structure of the guide rail can prevent the protection pipe body from falling off, and the L-shaped parts being parallel to each other but in opposite directions can facilitate the rotation of the protection pipe body in the opposite direction during installation or disassembly, making it convenient to apply the rotational force.

[0011] As a further improvement of the technical solution, the inner cylinder flap is divided into upper and lower flaps, and the inner wall of the inner cylinder flap is in mutual contact with the protection pipe body.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. For the enhanced MPP cable protection pipe used in an ultra-low temperature environment, by providing upper and lower inner cylinder flaps and a clamping assembly on the inner cylinder flap, a gap is formed between the outer cylinder and the inner cylinder flap, providing a buffer space for thermal expansion and contraction. And a heat insulation material is filled between the outer cylinder and the inner cylinder flap to further protect the connection, thereby effectively solving the problem that the connection of the existing cable protection pipe is easily broken due to the influence of temperature thermal expansion and contraction.

[0014] 2. The enhanced MPP cable protection pipe used in ultra-low temperature environment can facilitate the installation and disassembly of the cable protection pipe by setting the clamping component. During installation, only need to squeeze the wedge block, and then squeeze the inner cylinder petals through the spring to clamp and fasten the cable. At the same time, the spring can provide a buffer space for the thermal expansion and contraction effect of the connection part; setting the limit box facilitates the movement of the wedge block and at the same time restricts the wedge block to move up and down only within the limit box to prevent the wedge block from getting stuck in the outer cylinder.

[0015] 3. The enhanced MPP cable protection pipe used in ultra-low temperature environment, by setting the clamping ring which is threadedly sleeved on the outer cylinder, during disassembly or installation, only need to rotate the clamping ring to squeeze or release the wedge block, and then achieve the fastening or release of the inner cylinder petals through the spring.

[0016] 4. The enhanced MPP cable protection pipe used in ultra-low temperature environment, by setting the guide rail and the limit block, can play a role in pre-installation and pre-fastening of the protection pipe body. The L-shaped structure of the guide rail can prevent the protection pipe body from falling off. The L-shaped structure part is provided with parallel but opposite directions, which can facilitate the rotation of the protection pipe body in the opposite direction during installation or disassembly, and is convenient for applying the rotational force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention;

[0018] Figure 2 is the front view of the overall structure of the connecting component of the present invention;

[0019] Figure 3 is the cross-sectional view of the connecting component structure of the present invention;

[0020] Figure 4 is the top view of the cross-section of the connecting component of the present invention;

[0021] Figure 5 is the front view of the cross-section of the connecting component of the present invention.

[0022] The meanings of each label in the figure are as follows:

[0023] 1. Protection pipe body; 2. Limit block; 3. Heat insulation material; 4. Inner cylinder petals; 5. Guide rail; 6. Clamping component; 7. Clamping ring; 8. Outer cylinder

[0024] 61. Wedge block; 62. Limit box; 63. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" or "several" is two or more, unless otherwise specifically defined.

[0028] Please refer to Figure 1 - Figure 2 As shown, the purpose of this embodiment is to provide an enhanced MPP cable protection pipe for use in ultra-low temperature environments, including a protection pipe body 1.

[0029] Furthermore, please refer to Figure 1 - Figure 2 As shown, it further includes an outer cylinder 8. A limiting block 2 is provided on the protection pipe body 1, a clamping assembly 6 and a clamping ring 7 are provided on the outer cylinder 8, an inner cylinder flap 4 is provided inside the outer cylinder 8, and the inner cylinder flap 4 is fixedly connected to the clamping assembly 6. A heat insulation material 3 is filled between the outer cylinder 8 and the inner cylinder flap 4, and a guide rail 5 is provided on the inner wall of the inner cylinder flap 4; when installing the cable protection pipe body 1, align the limiting block 2 on the protection pipe body 1 with the guide rail 5 on the inner cylinder flap 4, and then push the protection pipe body 1 to the end of the guide rail 5. At this time, rotating the protection pipe body 1 can achieve the pre-installation and pre-fastening of the protection pipe body 1.

[0030] Even further, please refer to Figure 2 - Figure 4As shown, the clamping assembly 6 includes a limit box 62 which is fixedly connected inside the outer cylinder 8. A wedge block 61 is slidably connected inside the limit box 62. One end of the wedge block 61 is provided with a wedge-shaped structure, and the other end is fixedly connected to one end of a spring 63. The other end of the spring 63 is fixedly connected to the inner cylinder flap 4.

[0031] Specifically, please refer to Figure 2 - Figure 4 As shown, both ends of the outer surface of the outer cylinder 8 are threaded structures with opposite thread directions, and the clamping ring 7 is threadedly connected to the outer cylinder 8. At this time, by rotating the clamping rings 7 at both ends of the outer cylinder 8, the clamping rings 7 can be gradually moved towards the wedge block 61. When the clamping rings 7 squeeze the wedge block 61, the force is transmitted through the spring 63 to squeeze the inner cylinder flap 4, thereby realizing the clamping and fastening of the protection tube body 1. When disassembly is required for maintenance, just rotate the clamping rings 7 in the reverse direction to separate the clamping rings 7 from the wedge block 61, thereby releasing the extrusion of the inner cylinder flap 4. At this time, rotating the protection tube body 1 in the reverse direction can realize the disassembly of the protection tube body 1.

[0032] Furthermore, please refer to Figure 3 and Figure 5 As shown, the limit block 2 is adapted to the guide rail 5. The guide rail 5 is of an L-shaped structure and is arranged at both ends of the inner wall of the inner cylinder flap 4. The L-shaped parts of the two guide rails 5 are parallel to each other but in opposite directions.

[0033] In addition, please refer to Figure 2 and Figure 3 As shown, the inner cylinder flap 4 is divided into upper and lower flaps, and the inner wall of the inner cylinder flap 4 is in mutual contact with the protection tube body 1.

[0034] The specific working principle is as follows:

[0035] When installing the cable protection pipe body 1, align the limit block 2 on the protection pipe body 1 with the guide rail 5 on the inner cylinder lobe 4, and then push the protection pipe body 1 to the end of the guide rail 5. At this time, rotating the protection pipe body 1 can realize the pre-installation and pre-fastening of the protection pipe body 1; at this time, rotate the clamping rings 7 at both ends of the outer cylinder 8, and the clamping rings 7 can be gradually moved towards the wedge block 61. When the clamping rings 7 squeeze the wedge block 61, the force is transmitted through the spring 63 to squeeze the inner cylinder lobe 4, so as to realize the clamping and fastening of the protection pipe body 1; when maintenance requires disassembly, just rotate the clamping rings 7 in the reverse direction to realize the separation of the clamping rings 7 from the wedge block 61, so as to release the extrusion of the inner cylinder lobe 4. At this time, rotate the protection pipe body 1 in the reverse direction to realize the disassembly of the protection pipe body 1; plus the heat insulation material 3 filled inside, finally realize the heat insulation protection of the connection of the protection pipe body 1, and at the same time leave a buffer space for the thermal expansion and contraction effect of the connection. Moreover, through the cooperation setting of the clamping ring 7 and the clamping assembly 6; thus effectively solving the problem that the connection of the existing cable protection pipe body 1 is easily broken due to the influence of temperature thermal expansion and contraction and the disassembly cost is high.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An enhanced MPP cable protection tube for use in ultra-low temperature environments, comprising a protection tube body (1); Features: The protective tube body (1) further comprises an outer tube (8), a limit block (2) being arranged on the outer tube (8), a clamping assembly (6) and a clamping ring (7) being arranged on the outer tube (8), an inner tube flap (4) being arranged inside the outer tube (8), and the inner tube flap (4) being fixedly connected to the clamping assembly (6), a thermal insulation material (3) being filled between the outer tube (8) and the inner tube flap (4), and a guide rail (5) being arranged on the inner wall of the inner tube flap (4).

2. The enhanced MPP cable protection tube for use in ultra-low temperature environments according to claim 1, characterized in that: The clamping assembly (6) comprises a limit box (62), the limit box (62) being fixedly connected inside the outer cylinder (8), a wedge block (61) being slidably connected inside the limit box (62), one end of the wedge block (61) being arranged as a wedge-shaped structure, the other end of which is fixedly connected to one end of a spring (63), and the other end of the spring (63) being fixedly connected to the inner cylinder petal (4).

3. The enhanced MPP cable protection tube for use in ultra-low temperature environments according to claim 1, characterized in that: The outer surface of the outer cylinder (8) has threaded structures at both ends, and the thread directions are opposite, and the clamping ring (7) is threadedly connected to the outer cylinder (8).

4. The enhanced MPP cable protection tube for use in ultra-low temperature environments according to claim 1, characterized in that: The limit block (2) is adapted to the guide rail (5), the guide rail (5) is an L-shaped structure, and the guide rail (5) is arranged at two ends of the inner wall of the inner cylinder flap (4), and the L-shaped structural parts of the two guide rails (5) are parallel to each other but in opposite directions.

5. The enhanced MPP cable protection tube for use in ultra-low temperature environments according to claim 4, characterized in that: The inner cylinder flap (4) is divided into two flaps, an upper flap and a lower flap, and the inner wall of the inner cylinder flap (4) and the protective tube body (1) are in contact with each other.

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