Pressing buckle type stainless steel anti-explosion flexible pipe

Abstract

The utility model discloses a pressing buckle type stainless steel anti-explosion flexible pipe which comprises an outer pipe body, an inner supporting assembly, a connecting section, a butt joint ring, a pressure relief assembly, an installation head, a decoration ring, an outer connector, a threaded groove and a pressing buckle pipe. A heat insulation layer in the inner supporting assembly is connected in the outer pipe body in a sleeved mode, a supporting steel net is connected in the heat insulation layer in a sleeved mode, and the supporting steel net is connected to a buffer layer in a sleeved mode. Inner cavitation bubbles are uniformly formed in the buffer layer, and one end of the outer pipe body is sleeved with a connecting section; according to the utility model, the outer pipe body made of the stainless steel material is used as an outer wall support of the pipeline structure, and the inner supporting assembly is filled in the outer pipe body to form the whole pipe body structure, so that the bending resistance and the overall bending resistance of the flexible pipe are improved, and the practicability of the flexible pipe is further guaranteed; the pressure relief assembly is additionally arranged between the connecting section and the outer connector, internal pressure is helped to be released and flow out when the interior of the pipeline is deflagrated, transverse tension borne by the outer connector is relieved, the pressing buckle structure is prevented from falling off during deflagration, and the anti-explosion performance of the flexible pipe is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof electrical equipment connection technology, and in particular to a snap-fit ​​stainless steel explosion-proof flexible tube. Background Technology

[0002] Explosion-proof flexible conduit is a connecting conduit specifically designed for explosion-proof electrical equipment. It is primarily used in hazardous locations such as petrochemical and military environments, as well as for safe connections in flammable dust and explosive gas environments. It possesses advantages such as flame retardancy, corrosion resistance, and aging resistance, and is therefore widely used in locations requiring high safety standards. It effectively prevents explosions and fires, protecting equipment and personnel. Secondly, the flexible conduit allows for flexible connections: as a flexible connection for conduit wiring, explosion-proof flexible conduit can adapt to complex wiring requirements, especially in locations where bending steel conduit is difficult, providing a more flexible and convenient solution. While existing explosion-proof flexible conduits can basically meet daily usage needs, some shortcomings remain. One is that... Most explosion-proof flexible conduits consist of a stainless steel flexible structure. While their internal structure is simple and they possess flame-retardant properties, their overall bending and compressive strength is poor. Excessive bending can damage the external stainless steel material, affecting the practicality of the flexible conduit. Furthermore, the explosion-proof principle of flexible conduits is that when a flammable gas deflagrates inside the connected explosion-proof instrument, it absorbs some of the deflagration energy and releases pressure to the outside and the conduit through the joint. Simultaneously, the joint metal further absorbs heat, thus preventing the ignition (deflagration) of external flammable gas. However, due to internal pressure limitations, the joint is prone to detachment under reverse pressure during internal deflagration, affecting its explosion-proof performance. Therefore, designing a crimped stainless steel explosion-proof flexible conduit is essential. Utility Model Content

[0003] The purpose of this invention is to provide a snap-fit ​​stainless steel explosion-proof flexible tube to address existing defects.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a press-fit stainless steel explosion-proof flexible tube, comprising an outer tube body, an inner support assembly, a connecting section, an annular protrusion, a mating ring, a pressure relief assembly, an installation head, a decorative ring, an outer connector, a threaded groove, and a press-fit tube. The outer tube body is fitted with a heat insulation layer from the inner support assembly, and a support steel mesh is fitted within the heat insulation layer. The support steel mesh is fitted onto a buffer layer, and internal cavities are evenly distributed in the buffer layer. One end of the outer tube body is fitted with a connecting section, and a mating ring is fitted within the connecting section. The mating ring is fixed to the pressure relief tube in the pressure relief assembly. The outer wall of the pressure relief tube is evenly provided with installation grooves, and a sealing head is slidably connected within the installation grooves. An inner groove is symmetrically provided on one side of the sealing head, and one end of a pressure spring is fixed within the inner groove. A pressure relief groove is provided within the sealing head.

[0005] As a further technical solution of this utility model, the inner support component is composed of a heat insulation layer, vent holes, a support steel mesh, a buffer layer and an inner cavity, and the heat insulation layer is uniformly provided with vent holes.

[0006] As a further technical solution of this utility model, an annular protrusion is provided on the side wall of the connecting section.

[0007] As a further technical solution of this utility model, the pressure relief assembly consists of a pressure relief pipe, a mounting groove, a connecting groove, a sealing head, an inner groove, a pressure spring, and a pressure relief groove, with the other end of the pressure spring fixed on the pressure relief pipe.

[0008] As a further technical solution of this utility model, the inner wall of the pressure relief pipe is uniformly provided with connecting slots, and the connecting slots are interconnected with the mounting slots.

[0009] As a further technical solution of this utility model, one end of the pressure relief pipe is provided with an installation head, and a decorative ring is provided on the installation head.

[0010] As a further technical solution of this utility model, one end of the mounting head is provided with an external connector, and the inner wall of the external connector is provided with a threaded groove, and one end of the external connector is provided with a crimp tube.

[0011] This utility model provides a snap-fit ​​stainless steel explosion-proof flexible conduit, the advantages of which are as follows: the outer tube body made of stainless steel serves as the outer wall support of the pipeline structure, the internal filling with an inner support component constitutes the entire pipe structure, the heat insulation layer can block internal heat during deflagration, and the supporting steel mesh inside forms a soft skeleton structure to provide support for the outer tube body, improving the bending resistance of the flexible conduit. At the same time, the buffer layer with internal cavities on the inner wall forms an elastic support inside, and excessive bending will cause damage to the external stainless steel material, improving the overall bending resistance and thus ensuring the practicality of the flexible conduit; by adding a pressure relief component between the connecting section and the external joint, when the pipeline deflagrates, the internal pressure will push up the sealing head and stretch the pressure spring, while the pressure is released from the connecting groove and the pressure relief groove, reducing the lateral tension on the external joint, preventing the snap-fit ​​structure from falling off during deflagration, and ensuring the explosion-proof performance of the flexible conduit. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle.

[0017] In the diagram: 1. Outer tube; 2. Inner support assembly; 3. Connecting section; 4. Annular protrusion; 5. Butt ring; 6. Pressure relief assembly; 7. Mounting head; 8. Decorative ring; 9. External connector; 10. Threaded groove; 11. Press-fit tube; 21. Insulation layer; 22. Vent hole; 23. Supporting steel mesh; 24. Buffer layer; 25. Internal cavitation; 61. Pressure relief pipe; 62. Mounting groove; 63. Connecting groove; 64. Sealing head; 65. Inner groove; 66. Pressure spring; 67. Pressure relief groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see the appendix Figure 1 - Appendix Figure 4This utility model provides an embodiment of a press-fit stainless steel explosion-proof flexible tube, comprising an outer tube body 1, an inner support assembly 2, a connecting section 3, an annular protrusion 4, a mating ring 5, a pressure relief assembly 6, an installation head 7, a decorative ring 8, an outer connector 9, a threaded groove 10, and a press-fit tube 11. A heat insulation layer 21 from the inner support assembly 2 is sleeved within the outer tube body 1. A supporting steel mesh 23 is sleeved within the heat insulation layer 21, and the supporting steel mesh 23 is sleeved on a buffer layer 24. The buffer layer 24 has evenly spaced internal openings. Bubble 25, one end of the outer tube 1 is fitted with a connecting section 3, a mating ring 5 is fitted in the connecting section 3, and the mating ring 5 is fixed on the pressure relief pipe 61 in the pressure relief assembly 6. The outer wall of the pressure relief pipe 61 is evenly provided with mounting grooves 62, and a sealing head 64 is slidably connected in the mounting groove 62. An inner groove 65 is symmetrically provided on one side of the sealing head 64, and one end of the pressure spring 66 is fixed in the inner groove 65. A pressure relief groove 67 is provided in the sealing head 64; the inner support assembly 2 consists of a heat insulation layer 21 and a breathable layer. The heat insulation layer 21 is composed of holes 22, supporting steel mesh 23, buffer layer 24 and internal cavitation 25, and the heat insulation layer 21 is uniformly provided with vent holes 22; the side wall of the connecting section 3 is provided with annular protrusions 4; the pressure relief assembly 6 is composed of a pressure relief pipe 61, mounting groove 62, connecting groove 63, sealing head 64, inner groove 65, pressure spring 66 and pressure relief groove 67, and the other end of the pressure spring 66 is fixed to the pressure relief pipe 61; the inner wall of the pressure relief pipe 61 is uniformly provided with connecting grooves 63, and the connecting grooves 63 are... It is interconnected with the mounting groove 62; one end of the pressure relief pipe 61 is provided with a mounting head 7, and a decorative ring 8 is provided on the mounting head 7; one end of the mounting head 7 is provided with an external connector 9, and a threaded groove 10 is opened on the inner wall of the external connector 9; one end of the external connector 9 is provided with a crimp tube 11; the threaded groove 10 on the inner wall of the external connector 9 is used to connect with the external pipe structure; after connection, the crimp tube 11 is sleeved on the pipe; then a tool is used to crimp the pipe so that the sealing ring in the pipe is pressed tightly against the crimp tube 11 to achieve a seal.

[0020] Specifically, in use, the outer tube 1, made of stainless steel, serves as the outer wall support of the pipeline structure. The inner support component 2 fills the interior to form the entire pipe structure. The heat insulation layer 21 can block internal heat during a deflagration. The supporting steel mesh 23 forms a soft skeleton structure inside to provide support for the outer tube 1, improving the bending resistance of the flexible pipe. At the same time, the buffer layer 24 with internal cavities 25 on the inner wall forms an elastic support inside. Excessive bending will damage the external stainless steel material, improving the overall bending resistance and thus ensuring the practicality of the flexible pipe. By adding a pressure relief component 6 between the connecting section 3 and the outer connector 9, when the pipeline deflagrates, the internal pressure will push up the sealing head 64 and stretch the pressure spring 66, while releasing the pressure from the connecting slot 63 and the pressure relief slot 67, reducing the lateral tension on the outer connector 9, preventing the buckle structure from falling off during a deflagration, and ensuring the explosion-proof performance of the flexible pipe.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

[0022] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A press-fit type stainless steel explosion-proof flexible conduit, comprising an outer tube body (1), an inner support assembly (2), a connecting section (3), an annular protrusion (4), a mating ring (5), a pressure relief assembly (6), a mounting head (7), a decorative ring (8), an outer connector (9), a threaded groove (10), and a press-fit tube (11), characterized in that: The outer tube (1) is fitted with a heat insulation layer (21) of the inner support assembly (2), a support steel mesh (23) is fitted in the heat insulation layer (21), and the support steel mesh (23) is fitted on the buffer layer (24). The buffer layer (24) is uniformly provided with inner cavitation (25). One end of the outer tube (1) is fitted with a connecting section (3), a docking ring (5) is fitted in the connecting section (3), and the docking ring (5) is fixed on the pressure relief pipe (61) in the pressure relief assembly (6). The outer wall of the pressure relief pipe (61) is uniformly provided with an installation groove (62), and a sealing head (64) is slidably connected in the installation groove (62). An inner groove (65) is symmetrically provided on one side of the sealing head (64), and one end of the pressure spring (66) is fixed in the inner groove (65). A pressure relief groove (67) is provided in the sealing head (64).

2. The snap-fit ​​stainless steel explosion-proof flexible conduit according to claim 1, characterized in that: The inner support component (2) consists of a heat insulation layer (21), vent holes (22), a support steel mesh (23), a buffer layer (24), and an inner cavity (25). Ventilation holes (22) are uniformly arranged on the heat insulation layer (21).

3. The snap-fit ​​stainless steel explosion-proof flexible conduit according to claim 1, characterized in that: The connecting section (3) has an annular protrusion (4) on its side wall.

4. The snap-fit ​​stainless steel explosion-proof flexible conduit according to claim 1, characterized in that: The pressure relief assembly (6) consists of a pressure relief pipe (61), a mounting groove (62), a connecting groove (63), a sealing head (64), an inner groove (65), a pressure spring (66), and a pressure relief groove (67). The other end of the pressure spring (66) is fixed on the pressure relief pipe (61).

5. A snap-fit ​​stainless steel explosion-proof flexible conduit according to claim 4, characterized in that: The inner wall of the pressure relief pipe (61) is provided with a uniformly distributed connecting slot (63), and the connecting slot (63) is connected to the mounting slot (62).

6. A snap-fit ​​stainless steel explosion-proof flexible conduit according to claim 1, characterized in that: One end of the pressure relief pipe (61) is provided with an installation head (7), and a decorative ring (8) is provided on the installation head (7).

7. A snap-fit ​​stainless steel explosion-proof flexible conduit according to claim 6, characterized in that: One end of the mounting head (7) is provided with an external connector (9), and the inner wall of the external connector (9) is provided with a threaded groove (10), and one end of the external connector (9) is provided with a crimp tube (11).

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