A split high-sealing cable joint

Abstract

The application relates to a cable joint, in particular to a split high-sealing cable joint which comprises a joint sleeve ring, a first sealing ring and a second sealing ring, the two ends of the joint sleeve ring are respectively connected with the first sealing ring and the second sealing ring, and the joint sleeve ring is further provided with a buffer mechanism and a fixing mechanism; the buffer mechanism comprises a bellows and a butt joint ring, the two ends of the joint sleeve ring are connected with the bellows, the connecting ends of the first sealing ring and the second sealing ring are connected with the bellows, the end portions of the bellows are connected with the butt joint ring, the butt joint ring is provided with an embedded annular groove, the butt joint ring is fixedly connected with an embedded clamping block, and the embedded clamping block can be fixed in the embedded annular groove of the adjacent butt joint ring through clamping. The cable joint is fixed through the joint sleeve ring, the first sealing ring and the second sealing ring are arranged at the two ends of the joint sleeve ring, and the first sealing ring and the second sealing ring are connected through the bellows, so that the stress distribution of the cable joint is dispersed.

Description

Technical Field

[0001] This invention relates to a cable connector, and more particularly to a split, high-sealing cable connector. Background Technology

[0002] As a key component for power transmission and signal connection, cable joints serve the dual function of ensuring reliable electrical connection and mechanical fixation between cables.

[0003] In existing technologies, cable joints are primarily fixed using snap-fit ​​or riveting structures. Snap-fit ​​connections achieve the connection through the mechanical engagement of elastic clips with the cable conductor, while riveting utilizes the plastic deformation of metal rivets to press the conductors together. While these methods meet basic conductivity requirements, they have significant drawbacks in terms of mechanical stress distribution. Due to the abrupt changes in the geometry of the contact interface, localized stress concentration occurs along the current conduction path and in the mechanically stressed area, leading to stress concentration at the joint. This stress concentration not only causes periodic changes in contact resistance but can also lead to fatigue damage to the conductor material, thus affecting the long-term reliability of the cable system. Experimental data shows that under dynamic loads, the stress concentration factor of traditional snap-fit ​​or riveting structures can reach 3-5 times that of a uniform stress field, posing a potential hazard to the safe operation of power transmission systems. Summary of the Invention

[0004] To overcome the drawback of using a fixed connection method at the cable joint, which can easily lead to localized stress concentration, causing abnormal resistance of the cable material and affecting its conductivity, this invention provides a separate, highly sealed cable joint.

[0005] The technical solution of the present invention is: a separable high-sealing cable connector, comprising a connector collar, a first sealing ring, and a second sealing ring, with the openings at both ends of the connector collar respectively engaging with the first and second sealing rings. It also includes a buffer mechanism and a fixing mechanism. The buffer mechanism includes a corrugated pipe and a connecting ring. Corrugated pipes are connected to both ends of the connector collar. Corrugated pipes are connected to the connection ends of the first and second sealing rings and the connector collar, and connecting rings are connected to the ends of the corrugated pipes. The connecting rings have embedded annular grooves and are fixedly connected to embedded clips. The embedded clips can be fixed in the embedded annular grooves of adjacent connecting rings by snapping. Rotating the connecting rings allows the connector collar, the first sealing ring, and the second sealing ring to be connected sequentially. Fixing mechanisms for fixing the connecting rings are provided at the connection ends of the connector collar, the first sealing ring, and the second sealing ring.

[0006] Furthermore, the fixing mechanism includes a fixing ring, a pin, and a first return spring. Taking the connector collar as an example, the connector collar has a radial through groove, the fixing ring is fixed in the radial through groove, the pin slides through the fixing ring and the first return spring connects the two, and the inner side of the mating ring is provided with a retaining groove, the pin can be inserted into the retaining groove to fix the connector collar and the mating ring, and the first sealing ring and the second sealing ring are moved towards each other to mate with the connector collar. Taking the first sealing ring as an example, after the first sealing ring is brought close to the connector collar, the mating ring of the first sealing ring is... The external embedded clip is inserted into the embedded annular groove of the connector collar's mating ring. Then, the first sealing ring is rotated. The embedded annular groove consists of an open part and a semi-closed part. The open part is the insertion position of the embedded clip, and the semi-closed part can limit the insertion of the clip. After the first sealing ring and the connector collar's mating ring are connected, the bellows will act as a connector between the first sealing ring and the connector collar. The first sealing ring is brought close to the mating ring, and then the pin is inserted into the slot of the mating ring to fix the connector collar and the first sealing ring.

[0007] Furthermore, the fixing mechanism also includes a positioning ball, with the positioning ball connected to the bottom of the pin, and a flange retaining ring provided in the radial through groove, which can limit the positioning ball by snapping.

[0008] Furthermore, it also includes a pressure testing mechanism, which includes a hydraulic pipe, a piston rod, a second return spring, and a positioning rubber ring. The hydraulic pipe is fixed in the middle of the connector collar, and the piston rod is slidably connected to both ends of the hydraulic pipe. The second return spring connects the piston rod and the hydraulic pipe, and the positioning rubber ring is connected to the hydraulic pipe. The positioning rubber ring is located inside the connector collar. When the piston rod moves in opposite directions, the hydraulic oil in the hydraulic pipe is pumped to the positioning rubber ring. The symmetrically arranged positioning rubber rings expand due to the injection of hydraulic oil, and the positioning rubber rings limit and fix the left and right sides of the cable connection point respectively.

[0009] Furthermore, the hydraulic pipes are marked with graduations on the outside.

[0010] Furthermore, it also includes a limiting component, which includes a protrusion and a locking rod. The piston rod end is rotatably connected to the protrusion, and both ends of the hydraulic pipe are connected to locking rods. The protrusions all have protrusions, and the ends of the locking rods all have grooves for the protrusions to engage.

[0011] Furthermore, it also includes a temperature control component, which includes a mounting base and a heat exchange tube. The mounting base is fixed to the outside of the first sealing ring and the second sealing ring, and the mounting base is connected to the heat exchange tube.

[0012] Furthermore, the heat exchange tube is spirally sleeved outside the first and second sealing rings.

[0013] Furthermore, it also includes a friction pad, with a friction pad provided on the outside of the connector collar.

[0014] Furthermore, it also includes a sealing tube, an inner beveled opening, and ball bearings. The ends of the first sealing ring and the second sealing ring that are far apart from each other are set as the sealing tube. The outer end of the sealing tube is provided with an inner beveled opening, and ball bearings are provided on the side wall of the inner beveled opening.

[0015] The present invention has the following advantages: the cable joint is fixed by the joint collar, and a first sealing ring and a second sealing ring are respectively set at both ends of the joint collar and connected to each other by a corrugated pipe. This disperses the stress distribution of the cable joint, gives the cable joint a certain degree of flexibility, improves the protection of the internal conductor of the cable, and thus improves the service life of the cable. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the docking ring and bellows of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the docking ring of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the fixing mechanism of the present invention.

[0020] Figure 5 For the present invention Figure 4 Detailed view of the 3D structure at point A.

[0021] Figure 6 This is a three-dimensional structural diagram of the pressure measuring mechanism of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the limiting component of the present invention.

[0023] Figure 8 This is a three-dimensional structural diagram of the constant temperature component of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the friction pad of the present invention.

[0025] Figure 10 This is a three-dimensional structural diagram of the sealing tube of the present invention.

[0026] Component names and serial numbers in the diagram: 1-Connector collar, 2-First sealing ring, 3-Second sealing ring, 4-Bellwall, 5-Matching ring, 6-Embedded annular groove, 7-Embedded locking block, 8-Fixing mechanism, 81-Fixing ring, 82-Pin, 83-First return spring, 84-Positioning ball, 85-Slot, 9-Pressure measuring mechanism, 91-Hydraulic pipe, 92-Piston rod, 93-Second return spring, 94-Positioning rubber ring, 10-Limiting assembly, 101-Protrusion, 102-Clipping rod, 11-Thermostatic assembly, 111-Fixing seat, 112-Heat exchange tube, 12-Friction pad, 13-Sealing tube at the end, 14-Inner oblique tube opening, 15-Ball bearing. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments.

[0028] Example: A split, high-sealing cable connector, such as Figures 1-3 As shown, the device includes a connector collar 1, a first sealing ring 2, and a second sealing ring 3. A friction pad 12 is provided on the outside of the connector collar 1. The openings at both ends of the connector collar 1 are respectively connected to the first sealing ring 2 and the second sealing ring 3. The first sealing ring 2 and the second sealing ring 3 have a symmetrical structure. The device also includes a buffer mechanism and a fixing mechanism 8. The buffer mechanism includes a bellows 4 and a mating ring 5. Bellows 4 are connected to both ends of the connector collar 1. Bellows 4 are also connected to the connecting ends of the first sealing ring 2 and the second sealing ring 3, and mating rings 5 ​​are connected to the ends of the bellows 4. The mating ring 5 has an embedded opening. The annular groove 6 and the mating ring 5 are fixedly connected to an embedded locking block 7. The embedded locking block 7 can be fixed in the embedded annular groove 6 of the adjacent mating ring 5 by snapping. Rotating the mating ring 5 can connect the joint collar 1, the first sealing ring 2 and the second sealing ring 3 in sequence, and then connect them to each other through the corrugated pipe 4. This disperses the stress distribution of the cable joint, makes the cable joint have a certain degree of flexibility, improves the protection of the internal conductor of the cable, and thus improves the service life of the cable. The mating ends of the joint collar 1, the first sealing ring 2 and the second sealing ring 3 are all provided with a fixing mechanism 8 for fixing the mating ring 5.

[0029] like Figure 1 , Figure 4 and Figure 5As shown, the fixing mechanism 8 includes a fixing ring 81, a pin 82, a first return spring 83, and a positioning ball 84. Taking the connector collar 1 as an example, the connector collar 1 has a radial through groove. The fixing ring 81 is fixed in the radial through groove. The pin 82 slides through the fixing ring 81, and the first return spring 83 connects the two. The inner side of the mating ring 5 is provided with a slot 85, and the pin 82 can be embedded in the slot 85 to fix the connector collar 1 and the mating ring 5. The bottom of the pin 82 is connected to the positioning ball 84. A flange retaining ring is provided in the radial through groove. The flange retaining ring can limit the positioning ball 84 by snapping. The first sealing ring 2 and the second sealing ring 3 are moved towards each other to mate with the connector collar 1. Taking the first sealing ring 2 as an example, the first sealing ring 2 is brought close to the connector collar. After 1, insert the embedded locking block 7 outside the mating ring 5 of the first sealing ring 2 into the embedded annular groove 6 of the mating ring 5 of the connector collar 1, and then rotate the first sealing ring 2. The embedded annular groove 6 consists of an open part and a semi-closed part. The open part is the insertion position of the embedded locking block 7, and the semi-closed part can limit the embedded locking block 7. When the first sealing ring 2 and the mating ring 5 of the connector collar 1 are connected, the bellows 4 will serve as the connecting part between the first sealing ring 2 and the connector collar 1. At this time, the bellows 4 can play the role of buffering, depressurizing and dispersing stress. If it is necessary to fix the connector collar 1 and the first sealing ring 2, it can be achieved by fixing mechanism 8, that is, bringing the first sealing ring 2 and the mating ring 5 close together, and then inserting the pin 82 into the locking groove 85 of the mating ring 5.

[0030] like Figure 1 and Figure 6 As shown, it also includes a pressure measuring mechanism 9, which includes a hydraulic pipe 91, a piston rod 92, a second return spring 93, and a positioning rubber ring 94. The hydraulic pipe 91 is fixed in the middle of the connector collar 1. The piston rod 92 is slidably connected to both ends of the hydraulic pipe 91. The second return spring 93 is connected between the piston rod 92 and the hydraulic pipe 91. The positioning rubber ring 94 is connected to the hydraulic pipe 91 and is located inside the connector collar 1. It presses the piston rod 92 in opposite directions, and the hydraulic oil in the hydraulic pipe 91 is pumped to the positioning rubber ring 94. The symmetrically arranged positioning rubber rings 94 expand due to the injection of hydraulic oil. The positioning rubber rings 94 limit and fix the left and right sides of the cable joint respectively. The hydraulic pipe 91 is marked with scales, which can reflect the thermal expansion and contraction of the cable under environmental changes in real time. The staff can perform routine daily maintenance in a timely manner based on the physical changes of the cable.

[0031] like Figure 1 and Figure 7 As shown, it also includes a limiting component 10, which includes a protrusion 101 and a locking rod 102. The piston rod 92 is rotatably connected to the end of the protrusion 101, and both ends of the hydraulic pipe 91 are connected to the locking rod 102. The protrusion 101 has a protrusion, and the end of the locking rod 102 has a groove for the protrusion to be engaged.

[0032] like Figure 1 and Figure 8 As shown, it also includes a temperature control component 11, which includes a fixed base 111 and a heat exchange tube 112. The fixed base 111 is fixed to the outside of the first sealing ring 2 and the second sealing ring 3. The fixed base 111 is connected to the heat exchange tube 112, which is spirally sleeved on the outside of the first sealing ring 2 and the second sealing ring 3, thereby improving the temperature control effect by increasing the contact area.

[0033] like Figure 1 and Figure 10 As shown, it also includes a sealing tube 13, an inner oblique opening 14, and a ball bearing 15. The ends of the first sealing ring 2 and the second sealing ring 3 that are far apart from each other are set as the sealing tube 13. The outer end of the sealing tube 13 is provided with the inner oblique opening 14, and the side wall of the inner oblique opening 14 is provided with the ball bearing 15.

[0034] The first sealing ring 2, the connector collar 1, and the second sealing ring 3 are sequentially fitted onto the outside of the cable. After the cable is connected, the connector collar 1 is moved to the connection point, and the protrusion 101 at the end of the piston rod 92 is rotated to disengage from the locking rod 102. Then, the second return spring 93 is compressed and reset. The hydraulic oil in the hydraulic pipe 91 is pumped to the positioning rubber ring 94. The symmetrically arranged positioning rubber rings 94 expand due to the injection of hydraulic oil, and the positioning rubber rings 94 will respectively limit and fix the left and right sides of the cable connection point. In addition, the hydraulic pipe 91 is equipped with scale markings, which can reflect the thermal expansion and contraction of the cable under environmental changes in real time. The staff can perform routine daily maintenance in a timely manner based on the physical changes of the cable. The worker pulls the protrusion 101 to the locking rod 102, causing the protrusion to engage with the groove for fixation. This method relieves pressure on the positioning rubber ring 94. After the connector collar 1 is fixed, the first sealing ring 2 and the second sealing ring 3 are moved towards each other to align with the connector collar 1. Taking the first sealing ring 2 as an example, after bringing the first sealing ring 2 close to the connector collar 1, the embedding locking block 7 on the outside of the mating ring 5 of the first sealing ring 2 is inserted into the embedded annular groove 6 of the mating ring 5 of the connector collar 1. Then, the first sealing ring 2 is rotated. The embedded annular groove 6 consists of an open part and a semi-closed part. The open part is the embedding position of the embedding locking block 7. The connection between the embedding locking block 7 and the mating ring 5 is smaller than the opening of the semi-closed part. Therefore, the semi-enclosed part can limit the embedded locking block 7. When the first sealing ring 2 and the mating ring 5 of the connector collar 1 are connected, the bellows 4 will serve as the connecting part between the first sealing ring 2 and the connector collar 1. At this time, the bellows 4 can play the role of buffering, depressurizing and dispersing stress. In this embodiment, the bellows 4 is made of rubber. If it is necessary to fix the connector collar 1 and the first sealing ring 2, it can be achieved by fixing mechanism 8, that is, bringing the first sealing ring 2 and the mating ring 5 close together, and then inserting the pin 82 into the slot 85 of the mating ring 5. The same applies to the connector collar 1. At this time, the first sealing ring 2 and the connector collar 1 will be in a fixed state. This is suitable for the packaging and transportation of cables. Both the first sealing ring 2 and the second sealing ring 3 are equipped with a constant temperature mechanism on the outside. The heat exchange tube 112 absorbs the temperature of the cable to achieve the purpose of balancing with the external temperature and improving the service life of the cable. The joint collar 1 is equipped with a rubber friction pad 12 on the outside to facilitate operation by the staff. Both the first sealing ring 2 and the second sealing ring 3 are equipped with a flared sealing tube 13 on the outside. The outer side of the sealing tube 13 is equipped with an inwardly inclined tube opening 14 to improve the mobility between the sealing tube 13 and the cable and reduce external damage to the cable caused by physical friction. The inner inclined tube opening 14 is equipped with ball bearings 15 on its side wall to increase the friction coefficient between the cable and the sealing tube 13 and improve the protection of the cable.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A split-type high-sealing cable joint, characterized in that: The joint includes a connector collar (1), a first sealing ring (2), and a second sealing ring (3). The openings at both ends of the connector collar (1) are respectively connected to the first sealing ring (2) and the second sealing ring (3). The joint also includes a buffer mechanism and a fixing mechanism (8). The buffer mechanism includes a bellows (4) and a connecting ring (5). Both ends of the connector collar (1) are connected to the bellows (4). The first sealing ring (2) and the second sealing ring (3) are both connected to the bellows (4) at their connecting ends with the connector collar (1), and the ends of the bellows (4) are all connected to... The docking ring (5) has an embedded annular groove (6) and an embedded locking block (7) fixed to it. The embedded locking block (7) can be fixed in the embedded annular groove (6) of the adjacent docking ring (5) by snapping. Rotating the docking ring (5) can connect the joint sleeve (1), the first sealing ring (2) and the second sealing ring (3) in sequence. The docking ends of the joint sleeve (1), the first sealing ring (2) and the second sealing ring (3) are all provided with a fixing mechanism (8) for fixing the docking ring (5).

2. The detachable high-sealing cable joint according to claim 1, characterized in that: The fixing mechanism (8) includes a fixing ring (81), a pin (82) and a first return spring (83). Taking the connector collar (1) as an example, the connector collar (1) has a radial through groove. The fixing ring (81) is fixed in the radial through groove. The pin (82) slides through the fixing ring (81) and the two are connected by the first return spring (83). The inner side of the mating ring (5) is provided with a slot (85). The pin (82) can be embedded in the slot (85) to fix the connector collar (1) and the mating ring (5).

3. A detachable high-sealing cable connector according to claim 2, characterized in that: The fixing mechanism (8) also includes a positioning ball (84), the bottom of the pin (82) is connected to the positioning ball (84), and a flange retaining ring is provided in the radial through groove. The flange retaining ring can limit the positioning ball (84) by snapping.

4. A detachable high-sealing cable joint according to claim 3, characterized in that: It also includes a pressure measuring mechanism (9), which includes a hydraulic pipe (91), a piston rod (92), a second return spring (93), and a positioning rubber ring (94). The hydraulic pipe (91) is fixed in the middle of the connector collar (1). The piston rod (92) is slidably connected to both ends of the hydraulic pipe (91). The second return spring (93) is connected between the piston rod (92) and the hydraulic pipe (91). The positioning rubber ring (94) is connected to the hydraulic pipe (91). The positioning rubber ring (94) is located inside the connector collar (1).

5. A detachable high-sealing cable connector according to claim 4, characterized in that: The hydraulic pipe (91) has scale markings on the outside.

6. A detachable high-sealing cable joint according to claim 5, characterized in that: It also includes a limiting component (10), which includes a protrusion (101) and a locking rod (102). The piston rod (92) is rotatably connected to the end of the protrusion (101), and the hydraulic pipe (91) is connected to the locking rod (102) at both ends. The protrusion (101) has a protrusion, and the locking rod (102) has a groove at the end for the protrusion to be engaged.

7. A separable high-sealing cable joint according to claim 6, characterized in that: It also includes a temperature control component (11), which includes a fixed base (111) and a heat exchange tube (112). The fixed base (111) is fixed to the outside of the first sealing ring (2) and the second sealing ring (3), and the fixed base (111) is connected to the heat exchange tube (112).

8. A split-type high-sealing cable joint according to claim 7, characterized in that: The heat exchange tube (112) is spirally sleeved outside the first sealing ring (2) and the second sealing ring (3).

9. A detachable high-sealing cable joint according to claim 8, characterized in that: It also includes a friction pad (12), and the friction pad (12) is provided on the outside of the connector collar (1).

10. A detachable high-sealing cable connector according to claim 9, characterized in that: It also includes a sealing tube (13), an inner oblique opening (14), and a ball (15). The ends of the first sealing ring (2) and the second sealing ring (3) that are far apart from each other are set as the sealing tube (13). The outer end of the sealing tube (13) is provided with an inner oblique opening (14), and the side wall of the inner oblique opening (14) is provided with a ball (15).

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