Stainless steel anti-explosion flexible pipe structure

Abstract

The utility model discloses a stainless steel anti-explosion flexible pipe structure which comprises a flexible pipe body, a first connecting assembly and a second connecting assembly, and the first connecting assembly and the second connecting assembly are arranged at the two ends of the flexible pipe body respectively. Wherein the first connecting assembly comprises a connector, a nut and an outer sleeve, one end of the connector is sleeved with the nut, one end of the flexible pipe body is sleeved with one end of the outer sleeve, and the other end of the outer sleeve extends into the nut. Through the application of the stainless steel flexible pipe structure, the stainless steel flexible pipe structure meeting the anti-explosion requirement is provided, anti-explosion connection between devices can be achieved, the structure is relatively simple, meanwhile, the sealing effect is good, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof connection, in particular to a stainless steel explosion-proof flexible pipe structure. Background Art

[0002] Currently, explosion-proof lamps are widely used for lighting workstations in hazardous environments such as oil extraction, refining, and chemical processing. These lamps typically require a sealed design to prevent arcs and sparks generated within the lamp from igniting flammable gases and dust in the surrounding environment. Existing explosion-proof lamps also require cables for power supply, and these connections typically utilize a sealed sleeve structure.

[0003] However, the existing pipe sleeve structure suitable for cable connection often requires the addition of multiple sealing rings and other sealing structures to achieve the sealing effect, but the fixing effect is often poor, and it is easy to fall off, resulting in sealing failure; and its overall structure is relatively complex and not easy to install during the production process, which further increases the cost of use. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a stainless steel explosion-proof flexible pipe structure, comprising: a flexible pipe body, a first connecting assembly and a second connecting assembly, wherein the first connecting assembly and the second connecting assembly are respectively arranged at both ends of the flexible pipe body;

[0005] Wherein, the first connecting component includes: a joint, a nut and a sleeve, one end of the joint is sleeved with the nut, one end of the sleeve is sleeved on one end of the flexible tube body, and the other end of the sleeve is inserted into the nut.

[0006] In another preferred embodiment, the nut extends radially inward at one end close to the flexible tube body to form an annular portion, the annular portion has an annular surface, a limiting space is formed between the annular surface and one end of the connector, and the other end of the sleeve is arranged to extend into the limiting space.

[0007] In another preferred embodiment, one end of the outer sleeve has an annular extrusion portion, and the annular extrusion portion extends into the limiting space.

[0008] In another preferred embodiment, the annular extrusion portion includes: a first part, a second part, a third part and a fourth part, the first part, the second part, the third part and the fourth part are connected in sequence, the first part extends radially inward relative to the outer sleeve, the second part extends axially outward along the outer sleeve, the third part extends radially outward relative to the second part, the fourth part extends radially inward relative to the third part, and the connection between the third part and the fourth part extends into the limiting space.

[0009] In another preferred embodiment, the annular portion is provided between the first portion and the third portion.

[0010] In another preferred embodiment, it further comprises: a gasket, wherein the gasket is clamped between one end of the joint and the annular extrusion portion.

[0011] In another preferred embodiment, the flexible pipe body includes: a sheath and a hose, the hose is arranged in the sheath, and the first connecting component and the second connecting component are respectively sleeved on both ends of the sheath.

[0012] In another preferred embodiment, the outer sleeve is provided on one end of the protective sleeve.

[0013] In another preferred embodiment, the flexible pipe body further comprises: a sealing ring, which is arranged between one end of the sheath and one end of the hose.

[0014] In another preferred embodiment, one end of the sealing ring close to the nut extends radially inward to form a contact portion, and the contact portion is arranged between the outer sleeve and the hose.

[0015] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0016] Through the application of the utility model, a stainless steel flexible pipe structure that meets explosion-proof requirements is provided, which is conducive to achieving explosion-proof connection between equipment. The structure is relatively simple and the sealing effect is good, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of a stainless steel explosion-proof flexible pipe structure of the present utility model;

[0018] Figure 2 This is a partial schematic diagram of a stainless steel explosion-proof flexible pipe structure of the present invention.

[0019] In the attached figure:

[0020] 1. Flexible tube body; 2. First connecting component; 3. Second connecting component; 4. Joint; 5. Nut; 6. Jacket; 7. Ring portion; 8. Ring surface; 9. Limiting space; 10. Ring extrusion portion; 11. First part; 12. Second part; 13. Third part; 14. Fourth part; 15. Gasket; 16. Sheath; 17. Hose; 18. Sealing ring; 19. Contact part. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "horizontal", and "vertical" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] It should be noted that the terms “horizontal” and “vertical” in the present invention are used to describe a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0024] like Figure 1 and Figure 2 The figure shows a preferred embodiment of a stainless steel explosion-proof flexible pipe structure, comprising: a flexible pipe body 1, a first connecting assembly 2, and a second connecting assembly 3, wherein the first connecting assembly 2 and the second connecting assembly 3 are respectively arranged at the two ends of the flexible pipe body 1; wherein the first connecting assembly 2 comprises: a joint 4, a nut 5, and a sleeve 6, wherein one end of the joint 4 is sleeved with the nut 5, one end of the sleeve 6 is sleeved on one end of the flexible pipe body 1, and the other end of the sleeve 6 is inserted into the nut 5. Furthermore, the joint 4 is used to connect to an external structure, such as an explosion-proof lamp or other cable; the nut 5 is sleeved on one end of the joint 4, and the sleeve 6 wraps and constrains the end of the flexible pipe body 1 and guides it into the nut 5, and the nut 5 simultaneously forms a sealed connection with the other end of the sleeve 6 in the peripheral direction.

[0025] Furthermore, as a preferred embodiment, the nut 5 and the connector 4 are connected by threaded connection.

[0026] Furthermore, as a preferred embodiment, the second connecting component 3 preferably adopts the same specific structure as the first connecting component 2 .

[0027] Furthermore, as a preferred embodiment, the nut 5 extends radially inward from one end close to the flexible tube body 1 to form an annular portion 7, the annular portion 7 has an annular surface 8, and a limiting space 9 is formed between the annular surface 8 and one end of the connector 4, and the other end of the sleeve 6 is arranged to extend into the limiting space 9.

[0028] Furthermore, as a preferred embodiment, one end of the outer sleeve 6 has an annular extrusion portion 10 , and the annular extrusion portion 10 extends into the limiting space 9 .

[0029] Furthermore, as a preferred embodiment, the nut 5 is adjustably arranged on the joint 4, and under the setting of threaded cooperation, the nut 5 can be moved along the axial direction of the joint 4, so that the annular surface 8 is close to the end face of the joint 4 and the annular extrusion portion 10 is tightened in the limiting space 9.

[0030] Further, as a preferred embodiment, the annular extrusion portion 10 includes: a first part 11, a second part 12, a third part 13 and a fourth part 14. The first part 11, the second part 12, the third part 13 and the fourth part 14 are connected in sequence, the first part 11 extends radially inward relative to the outer sleeve 6, the second part 12 extends axially outward along the outer sleeve 6, the third part 13 extends radially outward relative to the second part 12, the fourth part 14 extends radially inward relative to the third part 13, and the connection between the third part 13 and the fourth part 14 extends into the limiting space 9.

[0031] Furthermore, as a preferred embodiment, the first portion 11 , the second portion 12 , the third portion 13 and the fourth portion 14 are of an integrated structure and are formed by deforming the portion of the outer sleeve 6 extending in the axial direction.

[0032] Furthermore, as a preferred embodiment, the first portion 11 , the second portion 12 , the third portion 13 and the fourth portion 14 are all arranged in a ring shape.

[0033] Furthermore, as a preferred embodiment, the first portion 11 and the second portion 12 can be prefabricated, and the third portion 13 and the fourth portion 14 can be formed by axial extrusion after being inserted into the inner side of the nut 5 .

[0034] Furthermore, as a preferred embodiment, the third portion 13 is arranged to gradually expand in a direction approaching the joint 4 .

[0035] Further, as a preferred embodiment, the annular portion 7 is disposed between the first portion 11 and the third portion 13 .

[0036] Furthermore, as a preferred embodiment, it further includes: a gasket 15 , which is clamped between one end of the joint 4 and the annular extrusion portion 10 .

[0037] Furthermore, as a preferred embodiment, the gasket 15 is arranged in a ring shape.

[0038] Furthermore, as a preferred embodiment, the outer sleeve 6 is fastened to the end of the flexible pipe body 1 by a crimping process.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the implementation manner and protection scope of the present invention.

[0040] The present invention also has the following implementation methods based on the above:

[0041] In a further embodiment of the present invention, the flexible pipe body 1 includes: a sheath 16 and a hose 17 . The hose 17 is disposed in the sheath 16 . The first connecting component 2 and the second connecting component 3 are respectively sleeved on both ends of the sheath 16 .

[0042] In a further embodiment of the present invention, the sheath 16 is preferably a metal braided sleeve structure, and the hose 17 is preferably a metal bellows.

[0043] In a further embodiment of the present invention, the outer sleeve 6 is sleeved on one end of the protective sheath 16 .

[0044] In a further embodiment of the present invention, the flexible pipe body 1 further includes a sealing ring 18 , which is disposed between one end of the sheath 16 and one end of the hose 17 .

[0045] In a further embodiment of the present invention, one end of the sealing ring 18 close to the nut 5 extends radially inward to form a contact portion 19 , and the contact portion 19 is disposed between the outer sleeve 6 and the hose 17 .

[0046] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A stainless steel explosion-proof flexible pipe structure, characterized in that: include: A flexible pipe body, a first connecting assembly and a second connecting assembly, wherein the first connecting assembly and the second connecting assembly are respectively arranged at two ends of the flexible pipe body; Wherein, the first connecting component includes: a joint, a nut and a sleeve, one end of the joint is sleeved with the nut, one end of the sleeve is sleeved on one end of the flexible tube body, and the other end of the sleeve is inserted into the nut.

2. The stainless steel explosion-proof flexible pipe structure according to claim 1, characterized in that: The nut extends radially inward from one end close to the flexible tube body to form an annular portion, the annular portion has an annular surface, a limiting space is formed between the annular surface and one end of the connector, and the other end of the sleeve is extended into the limiting space.

3. The stainless steel explosion-proof flexible pipe structure according to claim 2, characterized in that: One end of the outer sleeve is provided with an annular extrusion portion, and the annular extrusion portion extends into the limiting space.

4. The stainless steel explosion-proof flexible pipe structure according to claim 3, characterized in that: The annular extrusion portion includes: a first part, a second part, a third part and a fourth part. The first part, the second part, the third part and the fourth part are connected in sequence. The first part extends radially inward relative to the outer sleeve, the second part extends outward along the axial direction of the outer sleeve, the third part extends radially outward relative to the second part, and the fourth part extends radially inward relative to the third part. The connection between the third part and the fourth part extends into the limiting space.

5. The stainless steel explosion-proof flexible pipe structure according to claim 4, characterized in that: The annular portion is disposed between the first portion and the third portion.

6. The stainless steel explosion-proof flexible pipe structure according to claim 3, characterized in that: Also includes: A gasket is clamped between one end of the joint and the annular extrusion portion.

7. The stainless steel explosion-proof flexible pipe structure according to claim 1, characterized in that: The flexible pipe body includes: a sheath and a hose, the hose is arranged in the sheath, and the first connecting component and the second connecting component are respectively sleeved on both ends of the sheath.

8. The stainless steel explosion-proof flexible pipe structure according to claim 7, characterized in that: The outer sleeve is sleeved on one end of the protective sleeve.

9. The stainless steel explosion-proof flexible pipe structure according to claim 7, characterized in that: The flexible pipe body further includes a sealing ring, which is arranged between one end of the sheath and one end of the hose.

10. The stainless steel explosion-proof flexible pipe structure according to claim 9, characterized in that: One end of the sealing ring close to the nut extends radially inward to form a contact portion, and the contact portion is arranged between the outer sleeve and the hose.

Images