High-temperature-resistant flame-retardant PP cable sheath pipe

Abstract

The utility model discloses a kind of high-temperature-resistant flame-retardant PP cable sheath pipe, the utility model relates to cable sheath pipe technical field;The utility model includes first sleeve, the first sleeve one end is equipped with second sleeve, the first sleeve is close to the first sleeve one end of second sleeve and is equipped with mounting groove, the second sleeve is close to the second sleeve one end of first sleeve and is equipped with mounting block, first thread groove is equipped on the inner wall of mounting groove, second thread groove is equipped on the mounting block, first thread groove and second thread groove are embedded;The segmented splicing design is through the mounting groove and mounting block of first sleeve and second sleeve, realizes the linkage of splicing fixed and flame-retardant sealing, significantly optimizes use effect.When splicing, only need to rotate any one sleeve can be completed mechanical fixation and sealing ring extrusion sealing simultaneously, without additional auxiliary components, greatly simplify operation process, improve installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cable sheathing technology, and in particular to a high-temperature resistant and flame-retardant PP cable sheathing. Background Technology

[0002] In cable laying and protection scenarios, the first and second conduits often need to be spliced ​​to extend their length and accommodate different wiring requirements. This is especially true in high-temperature, flammable environments (such as industrial workshops and around electrical cabinets), where the requirements for the conduits' high-temperature resistance and flame-retardant properties are even higher. Traditionally, splicing the first and second conduits relies on external connectors (such as clamps and joints) or a direct socketing method, using bolts or adhesive to achieve the connection. During the splicing process, to ensure sealing and flame-retardant effects, flame-retardant tape must be wrapped around the splice or an independent sealant must be installed to ensure that the cables inside the conduit are not invaded by external impurities in high-temperature environments, while also preventing flames from spreading through the splice gap. This type of splicing method requires the use of various auxiliary components and must be strictly followed in accordance with the operating procedures to complete the fixing and sealing in order to meet basic protection requirements.

[0003] The current design for splicing the first and second sleeves has significant flaws. Firstly, the splicing method, relying on external connectors or auxiliary seals, is cumbersome, requiring the sleeves to be aligned first, followed by separate installation of seals and fasteners. This not only increases installation time but also risks gaps at the joint due to missing or improperly installed auxiliary components. Secondly, under prolonged high-temperature environments, external seals, such as tape or ordinary sealing rings, are prone to aging and failure, or loosening due to thermal expansion and contraction of the sleeves and at the splice, reducing sealing effectiveness and failing to effectively prevent the intrusion of high-temperature impurities or flames, posing a risk of cable damage. Furthermore, some splicing structures lack a coordinated design, requiring separate operations for fixing and sealing, making it difficult to guarantee their synchronous reliability. The additional auxiliary components also increase overall cost and maintenance difficulty.

[0004] Therefore, a new high-temperature resistant and flame-retardant PP cable sheath is proposed to solve the above problems. Utility Model Content

[0005] 1. Technical problems to be solved The purpose of this invention is to provide a high-temperature resistant and flame-retardant PP cable sheath, solving the problem that in practical use, the current splicing method between the first and second sheaths relies on external connectors or auxiliary seals. This method is cumbersome, requiring the sheaths to be joined first, followed by separate installation of seals and fasteners. This not only increases installation time but may also lead to gaps at the splice due to the omission or improper installation of auxiliary components. Furthermore, under long-term high-temperature environments, external seals, such as tape or ordinary sealing rings, are prone to aging and failure, or loosening due to thermal expansion and contraction of the sheaths and at the splice, resulting in a decreased sealing effect and an inability to effectively prevent the intrusion of high-temperature impurities or flames, posing a risk of cable damage. In addition, some splicing structures lack a linkage design, requiring separate operations for fixing and sealing, making it difficult to ensure the synchronous reliability of both. The additional auxiliary components also increase overall cost and maintenance difficulty.

[0006] 2. Technical Solution To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a high-temperature resistant and flame-retardant PP cable sheath, comprising a first sleeve, a second sleeve installed at one end of the first sleeve, an installation groove formed at the end of the first sleeve near the second sleeve, and an installation block installed at the end of the second sleeve near the first sleeve. A first threaded groove is formed on the inner wall of the installation groove, and a second threaded groove is formed on the installation block. The first threaded groove and the second threaded groove are fitted together. A sealing ring is installed between the first sleeve and the second sleeve, and the diameter of the sealing ring is slightly larger than the diameter of the installation groove.

[0007] Furthermore, flame-retardant rubber strips are installed on the inner walls of both the first and second sleeves. This design can effectively prevent the temperature on the sleeve from being transmitted to the cable inside the flame-retardant rubber strip in the event of a fire or some high-temperature conditions, thus further ensuring the safety of the cable.

[0008] Furthermore, each of the flame-retardant rubber strips has multiple resistance grooves. This design can reduce the excessive rotation of the cable within the flame-retardant rubber strip and the increase in wear when the first or second sleeve is subjected to vibration or movement.

[0009] Furthermore, multiple reinforcing ribs are installed on the outer surfaces of both the first and second sleeves. Each of the reinforcing ribs extends along the corresponding sleeve body direction. The reinforcing ribs not only enhance the compressive strength of the first and second sleeves, but also increase the heat dissipation area between the first and second sleeves and the external environment through the strip structure, thereby helping to improve the high temperature resistance.

[0010] Furthermore, multiple heat dissipation grooves are formed on the outer surface of both the first and second sleeves. The depth of any one of the heat dissipation grooves does not exceed one-third of the wall thickness of the tube. The heat dissipation grooves not only increase the surface area of ​​the first and second sleeves to improve heat dissipation efficiency and enhance high temperature resistance, but also reduce the contact area of ​​adjacent sleeves when the sleeves are stacked, thus avoiding adhesion at high temperatures.

[0011] Furthermore, a label slot is provided on the first sleeve. This design facilitates the pasting of labels with information such as pipe specifications and operating temperature, and can also serve as a marker to distinguish the beginning and end of the pipe during installation, avoiding reverse assembly that could affect its use.

[0012] Furthermore, both the first and second sleeves are coated with a high-temperature resistant silicone coating. This design not only enhances the high-temperature resistance of the first and second sleeves, preventing aging and cracking of the first and second sleeves under high-temperature conditions, but also improves the smoothness of the first and second sleeves, reducing frictional damage during pipe stacking.

[0013] 3. Beneficial effects Compared with existing technologies, the advantages of this utility model are: This segmented splicing design achieves simultaneous splicing fixation and flame-retardant sealing through the mounting grooves and mounting blocks of the first and second sleeves, significantly optimizing the performance. During splicing, simply rotating either sleeve simultaneously completes mechanical fixing and sealing ring compression, eliminating the need for additional auxiliary components, greatly simplifying the operation process and improving installation efficiency. Simultaneously, the tight fit structure formed by the mounting block compressing the sealing ring effectively fills the splicing gap. Combined with the thermal expansion characteristics of the sealing ring, even in high-temperature environments, the gap is further tightened as the temperature rises, maintaining excellent sealing and flame-retardant effects and preventing protection failure due to aging or thermal expansion and contraction. Furthermore, the integrated splicing and sealing design reduces the number of components, lowers costs and maintenance difficulty, and ensures that the first and second sleeves, after splicing, provide long-term stable high-temperature resistance and flame-retardant protection, safeguarding internal cables.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram showing the installation configuration of this utility model; Figure 2 This is a structural diagram of the first set of tubes of this utility model; Figure 3 This is a structural diagram of the second sleeve of this utility model; Figure 4 This is a structural diagram of the flame-retardant adhesive strip of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 110, First sleeve; 120, Mounting groove; 130, Second sleeve; 140, Mounting block; 150, Sealing ring; 210, Reinforcing rib; 220, Heat dissipation groove; 310, Label groove; 410, Flame retardant adhesive strip; 420, Resistance groove. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Please see Figure 1-4 As shown, this embodiment is a high-temperature resistant and flame-retardant PP cable sheath, including a first sleeve 110, a second sleeve 130 installed at one end of the first sleeve 110, an installation groove 120 opened at the end of the first sleeve 110 near the second sleeve 130, and an installation block 140 installed at the end of the second sleeve 130 near the first sleeve 110. A first threaded groove is opened on the inner wall of the installation groove 120, and a second threaded groove is opened on the installation block 140. The first threaded groove and the second threaded groove are fitted together. A sealing ring 150 is installed between the first sleeve 110 and the second sleeve 130. The diameter of the sealing ring 150 is slightly larger than the diameter of the installation groove 120.

[0023] Working Principle: When the length of a single sleeve is insufficient to protect the cable, multiple sleeves need to be spliced ​​together. For example, the mounting block 140 on the second sleeve 130 is moved into the mounting groove 120, and the second threaded groove on the mounting block 140 engages with the first threaded groove on the inner wall of the mounting groove 120, thus connecting them. During this process, the mounting block 140 continuously compresses the high-temperature resistant flame-retardant sealing ring 150 embedded inside. The sealing ring 150 deforms under compression, tightly adhering to the inner wall of the mounting groove 120. This not only completes the mechanical fixation between the sleeves through the engagement of the mounting block 140 and the mounting groove 120, but also fills the splicing gap through its own deformation, forming an initial seal. Subsequently, under high-temperature environments, the sealing ring 150 further tightens the gap using its thermal expansion characteristics, continuously enhancing the sealing and flame-retardant effects, maintaining reliable protection without the need for additional auxiliary components.

[0024] Flame-retardant adhesive strips 410 are installed on the inner walls of both the first sleeve 110 and the second sleeve 130, and multiple resistance grooves 420 are formed on each of the flame-retardant adhesive strips 410; multiple reinforcing ribs 210 are installed on the outer surfaces of both the first sleeve 110 and the second sleeve 130, and each of the reinforcing ribs 210 extends in the direction of the corresponding sleeve body; multiple heat dissipation grooves 220 are formed on the outer surfaces of both the first sleeve 110 and the second sleeve 130, and the depth of any one of the heat dissipation grooves 220 does not exceed one-third of the wall thickness of the tube body; a label groove 310 is formed on the first sleeve 110; and a layer of high-temperature resistant silicone coating is sprayed on the outer surfaces of both the first sleeve 110 and the second sleeve 130.

[0025] Working principle: The flame-retardant rubber strip 410 installed on the inner wall of the first sleeve 110 and the second sleeve 130 can effectively prevent the temperature on the sleeve from being transmitted to the cable inside the flame-retardant rubber strip 410 in the event of a fire or some high temperature conditions, thus further ensuring the safety of the cable. In addition, the resistance groove 420 can reduce the excessive rotation of the cable inside the flame-retardant rubber strip 410 and increase wear when the first sleeve 110 or the second sleeve 130 is subjected to vibration or movement.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-temperature resistant and flame-retardant PP cable sheath, characterized in that, include: A first sleeve (110) is provided, and a second sleeve (130) is installed at one end of the first sleeve (110). An installation groove (120) is provided at the end of the first sleeve (110) near the second sleeve (130). An installation block (140) is installed at the end of the second sleeve (130) near the first sleeve (110). A first threaded groove is provided on the inner wall of the installation groove (120), and a second threaded groove is provided on the installation block (140). The first threaded groove and the second threaded groove are fitted together. A sealing ring (150) is installed between the first sleeve (110) and the second sleeve (130). The diameter of the sealing ring (150) is slightly larger than the diameter of the installation groove (120).

2. The high-temperature resistant and flame-retardant PP cable sheath tube according to claim 1, characterized in that, Flame-retardant adhesive strips (410) are installed on the inner walls of both the first sleeve (110) and the second sleeve (130).

3. The high-temperature resistant and flame-retardant PP cable sheath tube according to claim 2, characterized in that, Each of the flame-retardant strips (410) has multiple resistance grooves (420).

4. The high-temperature resistant and flame-retardant PP cable sheath tube according to claim 1, characterized in that, Both the first sleeve (110) and the second sleeve (130) have multiple reinforcing ribs (210) installed on their outer surfaces, and each of the reinforcing ribs (210) extends in the direction of the corresponding sleeve body.

5. The high-temperature resistant and flame-retardant PP cable sheath tube according to claim 1, characterized in that, The outer surfaces of the first sleeve (110) and the second sleeve (130) are provided with multiple heat dissipation grooves (220), and the depth of any one of the heat dissipation grooves (220) does not exceed one-third of the wall thickness of the tube.

6. The high-temperature resistant and flame-retardant PP cable sheath tube according to claim 1, characterized in that, The first sleeve (110) has a label groove (310).

7. The high-temperature resistant and flame-retardant PP cable sheath tube according to claim 1, characterized in that, Both the first sleeve (110) and the second sleeve (130) are coated with a layer of high-temperature resistant silicone coating.

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