Mounting structure and mounting method for oil-filled hose of underwater sealing connector

Abstract

The invention belongs to the technical field of underwater sealing connector installation, and particularly relates to an installation structure and an installation method of an oil filling hose of an underwater sealing connector, the installation structure comprises a tail accessory II, the tail accessory II is sequentially sleeved with a hose II, a connecting sleeve II and a line pressing outer sheath from inside to outside, the outer wall, making contact with the hose II, of the tail accessory II and the inner wall, making contact with the hose II, of the connecting sleeve II are each provided with an anti-disengaging structure, and the anti-disengaging structures are in extrusion fit with the hose II to prevent the hose II from disengaging after the wire pressing outer sheath is connected in a pressing mode. And the mounting structure is assembled through the mounting method. The connecting sleeve II and the tail accessory II are firmly combined with the hose II through the anti-falling structure by extruding on the wire pressing outer sheath, so that the hose II can be fixed and sealed, the hose II is prevented from falling off, and liquid leakage is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater sealing connector installation, and particularly relates to an installation structure and an installation method of an oil-filled hose of an underwater sealing connector. Background Art

[0002] At present, wet-pluggable underwater sealed electrical connectors mostly use oil-filled tubes for wiring. The oil-filled tube is connected to the connector, and the oil-filled cavity of the connector is filled with oil. The oil filling achieves pressure balance and sealing protection of the connector. The oil-filled tube reduces the weight of the connector body and increases reliability.

[0003] Existing oil-filling pipes utilize oil-filling hoses, which are often secured using methods such as metal crimping and screw compression. Metal crimping prevents on-site wiring and is difficult to disassemble for repair. Any malfunction requires factory repair. Screw compression requires high worker skill and cannot guarantee an effective crimping length, potentially leading to leaks or detachment of the oil-filling hose from the connector, impacting connector performance and potentially damaging the connector and the equipment. Summary of the Invention

[0004] In order to solve the technical problems that the above-mentioned oil-filled pipe is difficult to install and easy to leak, the present invention provides an installation structure and an installation method of an underwater sealed connector oil-filled hose.

[0005] The objectives of the present invention are achieved by the following technical solutions: A mounting structure for an underwater sealed connector oil-filled hose is provided, comprising a tail attachment II, on which a hose II, a connecting sleeve II, and a wire-pressing outer sheath are sequentially sleeved from the inside out. The outer wall of the tail attachment II in contact with the hose II and the inner wall of the connecting sleeve II in contact with the hose II are each provided with an anti-slip structure that, after crimping the wire-pressing outer sheath, squeezes and engages with the hose II to prevent the hose II from slipping out.

[0006] Compared with the prior art, the present invention is beneficial in that:

[0007] By squeezing on the outer sheath of the crimping wire, the connecting sleeve II and the tail accessory II are firmly combined with the hose II through the anti-drop structure, which can achieve the fixation and sealing of the hose II, prevent the hose II from falling off, and prevent liquid leakage.

[0008] Furthermore, the anti-slip structure is a barb, the outer wall of the tail attachment II is provided with an axially distributed annular barb I, and the inner wall of the connecting sleeve II is provided with an axially distributed barb II.

[0009] Furthermore, the cross-sectional shape of the barb is a right-angled trapezoid.

[0010] Compared with the prior art, the present invention is beneficial in that:

[0011] The barb structure can prevent the hose II from falling out, and at the same time, the hose II can be installed smoothly when it is inserted into the connecting sleeve II and placed on the tail attachment II.

[0012] Furthermore, the wire pressing outer sheath is fixedly mounted on the tail attachment II.

[0013] Furthermore, the wire-pressing outer sheath is mounted on the tail attachment II via a set screw.

[0014] Compared with the prior art, the present invention is beneficial in that:

[0015] Fix the tail accessory II to the outer crimping sheath, and squeeze the connecting sleeve II, the hose II, and the tail accessory II to achieve a firm combination of the hose II and the tail accessory II.

[0016] Furthermore, the inner wall of the end portion of the wire pressing outer sheath is provided with a stopping boss for preventing the connecting sleeve II from falling out.

[0017] Compared with the prior art, the present invention is beneficial in that:

[0018] The blocking of the connecting sleeve II by the blocking boss can further prevent the connecting sleeve II and the hose II from falling out.

[0019] Furthermore, the connecting sleeve II has a plurality of opening structures distributed circumferentially, so that the connecting sleeve II forms a plurality of cantilevers, and the inner wall of the cantilever is provided with an anti-slip structure.

[0020] Compared with the prior art, the present invention is beneficial in that:

[0021] By providing the opening structure, the connecting sleeve II is easily elastically deformed, which facilitates crimping.

[0022] Furthermore, the inner wall of the end portion of the connecting sleeve II is provided with a limiting boss for stopping the limiting hose II.

[0023] Compared with the prior art, the present invention is beneficial in that:

[0024] The positioning between the connecting sleeve II and the hose II can be quickly achieved through the limiting boss.

[0025] A method for installing a mounting structure of an underwater sealing connector oil-filled hose comprises the following steps:

[0026] Put the connecting sleeve II on the end of the hose II so that the outer wall of the hose II can contact the anti-slip structure on the inner wall of the connecting sleeve II;

[0027] Slide the hose II and the connecting sleeve II onto the tail attachment II, so that the inner wall of the hose II contacts the anti-slip structure on the tail attachment II.

[0028] Put the outer sheath of the crimping wire on the tail accessory II, the connecting sleeve II and the hose II;

[0029] Install and fix the outer sheath of the wire crimping to the tail accessory II;

[0030] Squeeze the outer sheath of the crimping wire so that the connecting sleeve II and the tail accessory II squeeze the hose II, so that the anti-slip structure is combined with the hose II.

[0031] Furthermore, the crimping outer sheath is put on the tail accessory II, the connecting sleeve II, and the hose II or the crimping outer sheath is fixed on the tail accessory II and then squeezed to squeeze the connecting sleeve II, the hose II, and the tail accessory II so that the connecting sleeve II, the tail accessory II and the hose II are combined.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, which can be implemented in accordance with the contents of the specification, and to make the objects, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the installation structure of conventional products;

[0034] Figure 2 This is a cross-sectional view of an embodiment of the installation structure of an underwater sealing connector oil-filled hose of the present invention;

[0035] Figure 3 for Figure 2 A partial cross-sectional view of

[0036] Figure 4 for Figure 2 A perspective diagram of the mid-tail Annex II;

[0037] Figure 5 for Figure 2 Schematic diagram of the outer sheath of the medium voltage cable;

[0038] Figure 6 for Figure 2 Schematic diagram of the connecting sleeve.

[0039] Reference numerals:

[0040] 1-Connection sleeve I, 2-Tail accessory I, 3-Hose I.

[0041] 4-tail attachment II, 401-ring platform I, 402-ring platform II, 403-threaded hole, 404-barb I.

[0042] 5-wire outer sheath, 501-through hole, 502-stop boss.

[0043] 6-connecting sleeve II, 601-opening structure, 602-cantilever, 603-barb II, 604-limiting boss.

[0044] 7-Hose II. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] An embodiment of the installation structure of an underwater sealing connector oil-filled hose of the present invention is as follows Figures 2 to 6 As shown, the installation structure includes a tail attachment II 4, a wire-pressing outer sheath 5, a connecting sleeve II 6, and a hose II 7. The installation structure is described with the end portion where the tail attachment II 4 is connected to the connector as the front end.

[0047] The installation structure of conventional products consists of tail accessories I 2, connecting sleeve I 1 and hose I 3, such as Figure 1 As shown, the rear end of the connector's tail attachment 12 is fitted with a connecting sleeve 11. The inner wall of the front end of the connecting sleeve 11 features a protrusion that engages within a groove on the outer wall of the tail attachment 12, preventing the connecting sleeve 11 from separating from the tail attachment 12. The inner wall of the rear end of the connecting sleeve 11 is inclined toward the axis of the connecting sleeve 11; the outer wall of the rear end of the tail attachment 12 gradually tilts toward the axis of the tail attachment 12. The inner wall of the rear end of the connecting sleeve 11 and the outer wall of the rear end of the tail attachment 12 form an annular cavity for mounting a hose 13, within which the front end of the hose 13 is mounted. The inner wall of the rear end of the connecting sleeve 11 is threaded in an inclined direction, with the threads gradually increasing in depth from front to back. The outer wall of the front end of the hose 13 is threaded along the axial direction, forming a threaded connection with the threads of the connecting sleeve 11. The hose 13 is squeezed into the gap between the connecting sleeve 11 and the connector's tail attachment 12, securing and sealing the hose 13. However, the hose 13 only has an outer wall that is threaded with the connecting sleeve 11, which is prone to leakage. When the connecting sleeve 11 and the hose 13 are deformed in a vibration environment, the hose 13 is likely to detach from the connecting sleeve 11, further causing liquid leakage.

[0048] The present invention is improved on the basis of the above conventional products and is suitable for wet plugging underwater sealed electrical connectors, such as Figure 2 A tail attachment II 4 is provided at the tail of the wet-plug underwater sealed electrical connector.

[0049] The rear end of the tail attachment II 4 is covered with a fixed wire crimping sheath 5. In this embodiment, the wire crimping sheath 5 is connected to the tail attachment II 4 via a set screw. The front end of the tail attachment II 4 is used to connect to the connector. The rear end is composed of a ring I 401 and a ring II 402. The diameter of the ring I 401 is smaller than the diameter of the front end of the tail attachment II 4, and larger than the diameter of the ring II 402.

[0050] The ring platform I401 has multiple threaded holes 403 distributed circumferentially for threaded connection with set screws, thereby fixing the wire-pressing outer sheath 5 on the tail accessory II4. When the wire-pressing outer sheath 5 is inserted into the tail accessory II4 from the back to the front, the front end of the wire-pressing outer sheath 5 is sleeved on the ring platform I401 and the rear end is located on the outside of the ring platform II402. The step surface formed by the ring platform I401 and the front end of the tail accessory II 4 blocks the wire-pressing outer sheath 5, so that the through hole 501 on the wire-pressing outer sheath 5 is axially positioned with the threaded hole 403. The wire-pressing outer sheath 5 is rotated to align the through hole 501 with the threaded hole 403 in the circumferential direction. The set screw can be inserted into the through hole and screwed into the threaded hole 403 to achieve a fixed connection between the tail accessory II 4 and the wire-pressing outer sheath 5.

[0051] A plurality of barbs I 404 are distributed axially on the annular platform II 402. The barbs I 404 extend circumferentially on the outer wall of the annular platform II 402. The front side of each barb I 404 is perpendicular to the outer wall of the annular platform II 402, and the rear side is arranged at an angle. That is, the barbs I 404 have a reverse barb structure. When the hose II 7 is crimped onto the outer wall of the annular platform II 402, the barbs I 404 can prevent the hose II 7 from detaching backward, while allowing the hose II 7 to be smoothly inserted and sleeved on the annular platform II 402.

[0052] like Figure 5 The figure shows the wire-pressing outer sheath 5 when it is not crimped. The front end portion of the wire-pressing outer sheath 5 is axially distributed with a through hole 501 corresponding to the position and size of the threaded hole 403. After the wire-pressing outer sheath 5 is put on the tail accessory II4 and positioned, the through hole 501 can be aligned with the threaded hole 403, which is convenient for installing the set screw to fix the wire-pressing outer sheath 5 to the tail accessory II4.

[0053] The inner wall of the tail of the wire-pressing outer sheath 5 is provided with a stopping boss 502 for stopping the connecting sleeve II6 nested in the wire-pressing outer sheath 5 to prevent the connecting sleeve II6 from falling out of the wire-pressing outer sheath 5, thereby preventing the hose II7 from being separated from the tail accessory II4. Figure 2The illustrated state shows the outer wire-pressing sheath 5 after crimping. The outer wire-pressing sheath 5 is pressed against the connecting sleeve II6 and the hose II7. At this point, the stop boss 502 is located behind the rear end face of the connecting sleeve II6, capable of stopping the connecting sleeve II6. When the outer wire-pressing sheath 5 is not crimped, the stop boss 502 has a larger inner diameter, allowing the connecting sleeve II6 and the hose II7 to be inserted into the cavity formed by the outer wire-pressing sheath 5 and the tail attachment II4. Alternatively, the connecting sleeve II6 and the hose II7 can be first placed on the annular platform II402, and then the outer wire-pressing sheath 5 can be placed on the outside of the tail attachment II4, the connecting sleeve II6, and the hose II7. The installation sequence can be selected based on actual conditions. After the outer wire-pressing sheath 5 is crimped, the hose II7 and the connecting sleeve II6 can be squeezed and fixed between the outer wire-pressing sheath 5 and the annular platform II402, and the stop boss 502 can further stop the connecting sleeve II6, achieving a secure connection of the mounting structure.

[0054] The rear end of the connecting sleeve II6 is divided into a plurality of cantilevers 602 by a circumferentially distributed opening structure 601. The inner wall of the cantilever 602 is axially distributed with barbs II603. The cross-sectional shape of the barbs II603 is the same as that of the barbs I404, and is also a reverse barb structure, which prevents the hose II7 from slipping outward and ensures the smooth insertion of the connecting sleeve II6. The details will not be repeated here. Since the connecting sleeve II6 is an open structure, when the connecting sleeve II6 is installed on the hose II7, the cantilevers 602 on the connecting sleeve II6 are easily deformed to expand outward, which facilitates installation. When crimping, the cantilevers 602 of the connecting sleeve II6 are easily deformed, making it easy to crimp the connecting sleeve II6 to the hose II7, thereby reducing the difficulty of installation and improving the efficiency of hose II7 installation.

[0055] A limiting boss 604 is provided on the inner wall of the front end of the connecting sleeve II6. After the hose II7 is inserted into the connecting sleeve II6, the front end surface of the hose II7 rests on the limiting boss 604, limiting the hose II7 in the connecting sleeve II6, and then the hose II7 is sleeved on the ring platform II402.

[0056] Barbs are provided on the contact surfaces of the tail attachment II4, the connecting sleeve II6, and the hose II7. When squeezed by the tail attachment II4 and the connecting sleeve II6, the barb structures (including barbs I 404 and II 603) secure and seal the hose II7 to the tail attachment II4. By providing reverse barb structures on the connecting sleeve II6 and the tail attachment II4, the hose II7 is firmly secured in the connection formed by the reverse barb structures when subjected to a pull-off force, preventing it from falling off. In this embodiment, the reverse barb structures have a right-angled trapezoidal cross-section. When the connecting sleeve II6 is installed on the hose II7 and the hose II7 is installed on the tail attachment II4, the flat top surface of the right-angled trapezoid reduces installation resistance. After squeezing, the hose II7 and the barbs deform in a mutually adaptive manner, achieving pull-off resistance and preventing it from falling off.

[0057] After the tail accessory II 4 is sleeved and installed with the wire-pressing outer sheath 5, a set screw is used to achieve a reliable connection with the wire-pressing outer sheath 5. By squeezing the wire-pressing outer sheath 5, the barbs I404 on the tail accessory II 4 and the barbs II603 on the connecting sleeve II 6 secure and seal the hose II 7, preventing leakage. While the hose II 7 is tensilely attached to the tail accessory II 4 via the barbs I404, the connecting sleeve II 6 and the hose II 7 are connected in a tensile manner. At the same time, the stop boss 502 at the rear end of the wire-pressing outer sheath 5 fixed to the tail accessory II 4 can stop the connecting sleeve II 6 backward, so that the connecting sleeve II 6 is fixed to the outside of the tail accessory II 4 under the squeezing deformation of the wire-pressing outer sheath 5, achieving multiple tensile resistance and preventing the hose II 7 from falling off.

[0058] When installing the hose II 7 for oil filling, first, the connecting sleeve II 6 is sleeved on the front end of the hose II 7; secondly, the hose II7 with the connecting sleeve II 6 installed is sleeved on the tail accessory II 4 as a whole; finally, the wire-pressing outer sheath 5 is sleeved on the above-installed parts (including the tail accessory II 4, the connecting sleeve II 6, and the hose II 7) and the wire-pressing outer sheath 5 is fixed to the tail accessory II 4 by a set screw; after the wire-pressing outer sheath 5 is sleeved on the tail accessory II 4, the connecting sleeve II 6, and the hose II 7 or after the wire-pressing outer sheath 5 is fixed to the tail accessory II 4, it is squeezed, thereby squeezing the connecting sleeve II 6, the hose II 7, and the tail accessory II 4, so that the connecting sleeve II 6 and the hose II 7 fit more tightly, and the hose II 7 and the barb I404 on the tail accessory II 4 fit tightly.

[0059] In other embodiments of the present invention, improvements are made based on the above embodiments. The opening structure of the connecting sleeve II 6 can be eliminated, and the connecting sleeve II 6 is a complete structure. In this case, the connecting sleeve II 6 can be made of a material with a certain elastic deformation.

[0060] In other embodiments of the present invention, improvements are made on the basis of the above embodiments, and the reverse barb structure of the inner wall of the connecting sleeve II6 or the outer wall of the tail attachment II4 can be replaced by an anti-slip structure with a cross-section of other shapes. For example, in addition to a right-angled trapezoid, the cross-section of the anti-slip structure can also be a right-angled triangle or an isosceles trapezoid. As long as the anti-slip structure can squeeze the hose II7 under the action of extrusion, causing the outer wall of the hose II7 to deform and become concave, the hose II7 and the anti-slip structure can achieve axial tensile resistance and anti-slip.

[0061] An embodiment of a method for installing an installation structure of an oil-filled hose of an underwater sealing connector according to the present invention is summarized as follows, comprising the following steps:

[0062] The connecting sleeve II6 is positioned at the front end of the hose II7 so that the outer wall of the hose II7 cooperates with the anti-slip structure of the inner wall of the connecting sleeve II6;

[0063] Sleeve the hose II7 and the connecting sleeve II6 on the front end of the hose II7 onto the tail attachment II4, so that the inner wall of the hose II7 fits with the anti-slip structure on the tail attachment II4;

[0064] Put the wire crimping outer sheath 5 on the tail attachment II4, the connecting sleeve II6, and the hose II7;

[0065] Install and fix the wire-pressing outer sheath 5 and the tail attachment II4;

[0066] The outer wire-pressing sheath 5 is squeezed to make the connecting sleeve II6 and the tail attachment II4 squeeze the hose II7, so that the anti-slip structure is combined with the hose II7.

[0067] The above steps can be adjusted according to specific circumstances and scenarios and are not limited to the above order.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A mounting structure for an underwater sealing connector oil-filled hose, comprising a tail attachment II (4), characterized in that: The tail attachment II (4) is sleeved with a hose II (7), a connecting sleeve II (6), and a wire-pressing outer sheath (5) in sequence from the inside to the outside. The outer wall of the tail attachment II (4) in contact with the hose II (7) and the inner wall of the connecting sleeve II (6) in contact with the hose II (7) are both provided with an anti-slip structure that is pressed and matched with the hose II (7) after the wire-pressing outer sheath (5) is crimped to prevent the hose II (7) from slipping out.

2. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 1, characterized in that: The anti-slip structure is a barb. The outer wall of the tail attachment II (4) is provided with an axially distributed annular barb I (404), and the inner wall of the connecting sleeve II (6) is provided with an axially distributed barb II (603).

3. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 2, characterized in that: The cross-sectional shape of the barb is a right-angled trapezoid.

4. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 1, characterized in that: The wire pressing outer sheath (5) is fixedly mounted on the tail attachment II (4).

5. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 4, characterized in that: The wire pressing outer sheath (5) is mounted on the tail attachment II (4) via a set screw.

6. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 1, characterized in that: The inner wall of the end portion of the wire pressing outer sheath (5) is provided with a stopping boss (502) for preventing the connecting sleeve II (6) from falling out.

7. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 1, characterized in that: The connecting sleeve II (6) has a plurality of opening structures (601) distributed circumferentially, so that the connecting sleeve II (6) forms a plurality of cantilevers (602), and the inner wall of the cantilever (602) is provided with an anti-slip structure.

8. The installation structure of the oil-filled hose of the underwater sealing connector according to claim 1 or 6, characterized in that: The inner wall of the end of the connecting sleeve II (6) is provided with a limiting boss (604) for stopping the limiting hose II (7).

9. A method for installing a mounting structure for an underwater sealing connector oil-filled hose, characterized in that: The following steps are involved: The connecting sleeve II (6) is placed on the end of the hose II (7) so that the outer wall of the hose II (7) can contact the anti-slip structure of the inner wall of the connecting sleeve II (6); The hose II (7) and the connecting sleeve II (6) sleeved on the hose II (7) are sleeved on the tail attachment II (4) so ​​that the inner wall of the hose II (7) can contact the anti-slip structure on the tail attachment II (4); The wire pressing outer sheath (5) is placed on the tail attachment II (4), the connecting sleeve II (6), and the hose II (7); Install and fix the wire crimping outer sheath (5) and the tail attachment II (4); The outer wire-pressing sheath (5) is squeezed to make the connecting sleeve II (6) and the tail attachment II (4) squeeze the hose II (7), so that the anti-slip structure is combined with the hose II (7).

10. The method for installing the installation structure of the oil-filled hose of the underwater sealing connector according to claim 9, characterized in that: After the outer wire-pressing sheath (5) is sleeved on the tail attachment II (4), the connecting sleeve II (6), and the hose II (7), or after the outer wire-pressing sheath (5) is fixed on the tail attachment II (4), the outer wire-pressing sheath (5) is squeezed to squeeze the connecting sleeve II (6), the hose II (7), and the tail attachment II (4), so that the connecting sleeve II (6), the tail attachment II (4), and the hose II (7) are combined.

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