Sealing structure for high-voltage-resistant cable joint

Abstract

The invention relates to the technical field of cable connection, in particular to a sealing structure for a high-voltage-resistant cable joint, which comprises a fastener for tightly clamping a cable, sealing elements arranged on the inner side and the outer side of the fastener, and a fixing seat for fixedly mounting the fastener, fastening clamping plates are arranged in the fastening pieces in a bilateral symmetry mode, the sealing pieces are arranged on the inner sides of the fastening clamping plates and comprise mounting plates and sealing cylinders, the mounting plates are arranged on the two sides of the fastening pieces, the sealing cylinders horizontally penetrate through the fastening pieces, spring plates are arranged on the outer sides of the fastening clamping plates, and first springs and second springs are arranged on the spring plates correspondingly. The other ends of the first spring and the second spring are fixedly arranged on the inner wall of the fastener; the high-voltage-resistant cable connector has the advantages of being convenient to install, good in fixing effect, high in sealing performance and capable of effectively solving the problems that a sealing structure is lacked and the fixing effect is inconvenient when a high-voltage-resistant cable connector is connected with a high-voltage-resistant cable.

Description

Technical Field

[0001] The invention relates to the technical field of cable connection, in particular to a sealing structure for a high-voltage resistant cable joint. Background Art

[0002] Cable joints are also called cable heads. After the cable is laid, in order to make it a continuous line, each section of the line must be connected as a whole, and these connection points are called cable joints. The cable joints in the middle of the cable line are called intermediate joints, and the cable joints at both ends of the line are called terminal heads.

[0003] At present, when the existing high-voltage cable connections use intermediate joints and terminal heads, the joints lack a sealing structure. Due to inadequate sealing during later use, moisture enters through the gap between the high-voltage cable and the joint, thereby affecting the connection of the cable. At the same time, the existing connecting joints are inconvenient to fix when connected to the high-voltage cable, which can easily cause the high-voltage cable to separate from the joint, affecting its use.

[0004] Therefore, in view of the above problems, we propose a sealing structure for high-voltage cable joints. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a sealing structure for a high-voltage cable joint which is easy to install, has a good fixing effect and strong sealing performance, and solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sealing structure for a high-voltage cable joint, which includes a fastener for tightly clamping the cable, a seal arranged on both sides of the fastener, and a fixing seat for fixing the fastener. The fastener is two ellipses symmetrically arranged up and down, and the fastener is internally symmetrically provided with fastening clamps, the seal is arranged on the inner side of the fastening clamp, and the seal includes a mounting plate and a sealing tube. The mounting plates are arranged on both sides of the fastener, and the sealing tube horizontally passes through the fastener.

[0007] Preferably, a spring plate is provided on the outer side of the fastening splint, and a first spring and a second spring are respectively provided on the spring plate, and the other ends of the first spring and the second spring are fixedly provided on the inner wall of the fastener, and an anti-slip sealing pad is provided on the inner side of the fastening splint, and the anti-slip sealing pad fits the high-voltage cable connector and is used to seal the connecting inlet and outlet lines of the high-voltage cable connector.

[0008] Preferably, a pulley rope is provided in the middle of the inner side of the first spring, the pulley rope is connected to a movable pulley, the movable pulley is connected to a connecting piece, the movable pulley is connected to a telescopic mechanism provided inside the fixed seat through the connecting piece, the telescopic mechanism is provided with a mounting seat inside the fixed seat, the mounting seat is connected to a knob on the outer side of the fixed seat, and the fixed seat is fixed by bolts.

[0009] Preferably, the pulley rope is further provided with a first fixed pulley and a second fixed pulley on the inner side of the fastener, the first fixed pulleys are symmetrically arranged on the two ellipses of the fastener respectively, the second fixed pulley is symmetrically arranged in the middle of the two ellipses of the fastener, the head end pulley rope is arranged in the middle of the first spring and fixed on the fastening clamp, the tail end pulley rope is arranged between the second fixed pulleys, and the pulley rope is guided and connected to the connecting member through the first fixed pulley and the second fixed pulley.

[0010] Preferably, the mounting seat includes a rotating wheel arranged in the interior, the rotating wheel is transmission-connected to the knob, the rotating wheel is also embedded with a second telescopic rod, the second telescopic rod is embedded with a first telescopic rod, the first telescopic rod is connected to a connecting rod, the connecting rod is arranged on the movable pulley, and one end of the connecting rod is arranged on the inner side of the movable pulley.

[0011] Preferably, the movable pulley is two pulleys, and the two pulleys are connected by the connecting member.

[0012] Preferably, a pulley cavity is provided in the middle of the two ellipses of the fastener, and the movable pulley and the connecting member drive the first telescopic rod and the second telescopic rod to slide horizontally in the pulley cavity in sequence through thread transmission by rotating the knob.

[0013] Preferably, a limiting groove and a rotating shaft are also provided on the sealing member, the rotating shaft is connected to a limiting plate, a third screw hole is provided on the top of the limiting plate and the limiting groove, and the sealing member is injected with sealant or epoxy resin between the sealing tube and the cable.

[0014] Preferably, a plurality of conical sealing plugs are evenly bonded on the inner circumference of the sealing cylinder, and a sealing rubber strip is also provided on the inner side of the lower end of the conical sealing plug close to the mounting plate, and the sealing rubber strip and the conical sealing plug are both made of rubber.

[0015] Preferably, the mounting plate also includes a clamping block arranged in the middle and the upper and lower parts and a second screw hole arranged on both sides, the clamping block is embedded with a clamping groove, the second screw hole is correspondingly provided with a first screw hole, and the clamping groove and the first screw hole are both arranged on the left and right sides of the fastener.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a sealing structure for a high-voltage cable joint. The device has a simple structure, and a fastener is used to clamp the seal or the high-voltage cable joint through a fastening clamp provided on the inner side, and a fixing seat is provided on one side to install the bolts to a suitable position for fixing the device, so that the device can effectively fix the intermediate joint and the terminal head used for the high-voltage cable connection, so as to avoid the connection between the cable and the joint being affected by the shaking of the cable, and at the same time, the sealing rubber strip on the inner side of the sealing cylinder provided by the seal and the conical sealing plug are used to seal the connection inlet and outlet lines of the high-voltage cable joint, and at the same time, sealant or epoxy resin is poured into the sealing cylinder, so that moisture or other substances that have a certain influence on the conductivity of the high-voltage cable can be effectively prevented from entering through the gap, thereby affecting the electrical connection of the cable, thereby overcoming the problem of lack of sealing structure at the joint and the inconvenient fixing effect when the connecting joint is connected to the high-voltage cable, thereby affecting the connection between the high-voltage cable and the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the external installation structure of the seal of the present invention; Figure 3 It is a schematic diagram of the sealing clamp structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the joint seal of the present invention; Figure 5 It is a schematic diagram of the internal structure of the sealing clamp of the present invention; Figure 6 It is a schematic diagram of the fastening clamp structure of the present invention.

[0018] Explanations in the figure: 1. Fastener; 2. Seal; 3. Fixed seat; 4. Knob; 5. Limiting groove; 6. Limiting plate; 7. Rotating shaft; 8. Fastening clamp; 9. First spring; 10. Second spring; 11. Snap-in groove; 12. First screw hole; 13. Mounting plate; 14. Sealing rubber strip; 15. Snap-in block; 16. Second screw hole; 17. Anti-slip sealing pad; 18. First fixed pulley; 19. Pulley rope; 20. Second fixed pulley; 21. Spring plate; 22. Pulley cavity; 23. Movable pulley; 24. Connector; 25. First telescopic rod; 26. Second telescopic rod; 27. Second telescopic rod; 28. Mounting seat; 29. ​​Rotating wheel; 30. Third screw hole; 31. Sealing cylinder; 32. Conical sealing plug. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1-6 As shown, this embodiment discloses a sealing structure for a high-voltage cable joint, which includes a fastener 1 for tightly clamping a cable, a sealing member 2 arranged on both sides of the fastener 1, and a fixing seat 3 for fixing and installing the fastener 1. The fastener 1 is two ellipses symmetrically arranged up and down, and the fastener 1 is internally provided with fastening clamping plates 8 symmetrically arranged left and right. The sealing member 2 is arranged on the inner side of the fastening clamping plates 8. The sealing member 2 includes a mounting plate 13 and a sealing cylinder 31. The mounting plate 13 is arranged on both sides of the fastener 1, and the sealing cylinder 31 is arranged horizontally through the fastener 1. Among them, a spring plate 21 is arranged on the outside of the fastening clamp 8, and a first spring 9 and a second spring 10 are arranged on the spring plate 21 respectively. The other ends of the first spring 9 and the second spring 10 are fixedly arranged on the inner wall of the fastener 1, and an anti-slip sealing pad 17 is arranged on the inside of the fastening clamp 8. The anti-slip sealing pad 17 fits the high-voltage cable connector. A pulley rope 19 is arranged in the middle of the inner side of the first spring 9. The pulley rope 19 is connected to a movable pulley 23, and the movable pulley 23 is connected to a connecting member 24. The movable pulley 23 is connected to a telescopic mechanism arranged inside the fixed seat 3 through the connecting member 24. The telescopic mechanism is provided with a mounting seat 28 in the fixed seat 3, and the mounting seat 28 is connected to a knob 4 on the outside of the fixed seat 3; At the same time, the pulley rope 19 is also provided with a first fixed pulley 18 and a second fixed pulley 20 on the inner side of the fastener 1. The first fixed pulley 18 is symmetrically arranged on the two ellipses of the fastener 1 respectively, and the second fixed pulley 20 is symmetrically arranged in the middle of the two ellipses of the fastener 1. The head end pulley rope 19 is arranged in the middle of the first spring 9 and fixed on the fastening clamp 8. The tail end pulley rope 19 is arranged between the second fixed pulley 20, and the pulley rope 19 is guided and connected to the connecting member 24 through the first fixed pulley 18 and the second fixed pulley 20. The mounting seat 28 includes a rotating wheel 29 arranged inside, and the rotating wheel 29 is transmission-connected with the knob 4. The rotating wheel 29 is also embedded with a second telescopic rod 27, and the second telescopic rod 27 is embedded with a first telescopic rod 26. The first telescopic rod 26 is connected to a connecting rod 25, and the connecting rod 25 is arranged on the movable pulley 23. One end of the connecting rod 25 is arranged on the inner side of the movable pulley 23. The movable pulley 23 is two pulleys, and the two pulleys are connected by a connecting member 24.

[0021] In this embodiment, the seal 2 can be arranged inside or on both sides of the fastener 1. The seal 2 is arranged inside the fastener 1, so that the fastening splint 8 is rotated by the knob 4, and the knob 4 drives the second telescopic rod 27 arranged on the rotating wheel 29, so that the first telescopic rod 26 is rotated and telescoped in the second telescopic rod 27, so that the connecting rod 25 drives the movable pulley 23 connected by the connecting member 24 to slide horizontally in the pulley cavity 22, and the pulley rope 19 connected by the movable pulley 23 is used to pull the fastening splint 8 on one side of the fastener 1 with the assistance of the first fixed pulley 18 and the second fixed pulley 20, so that the seal 2 can be arranged on the inner side of the fastening splint 8, and the anti-slip sealing pads 17 arranged on both sides of the fastening splint 8 are attached to the seal 2, and the tightness of the attachment is further improved; In this embodiment, the two ellipses of the fastener 1 are provided with a limiting groove 5, a limiting plate 6 and a rotating shaft 7, so that the limiting plate 6 can be driven to open and close by the rotating shaft 7 to install and set the seal 2 or the high-voltage cable connector, and the third screw hole 30 correspondingly provided on the limiting groove 5 and the limiting plate 6 is used to install the bolt for fixing, so that the seal 2 or the high-voltage cable connector can be installed and removed more conveniently, which is convenient for later maintenance; In this embodiment, when the seal 2 is embedded in the fastener 1, the high-voltage cable connector can be arranged on both sides of the fastener 1. When the seal 2 is arranged on both sides of the fastener 1, the high-voltage cable connector is arranged inside the fastener 1, and is used to connect the intermediate joint or the terminal head to the high-voltage cable. Example

[0022] like Figure 1-6 As shown, this embodiment discloses a sealing structure for a high-voltage cable joint, which includes a fastener 1 for tightly clamping a cable, a sealing member 2 arranged on both sides of the fastener 1, and a fixing seat 3 for fixing and installing the fastener 1. The fastener 1 is two ellipses symmetrically arranged up and down, and the fastener 1 is internally provided with fastening clamping plates 8 symmetrically arranged left and right. The sealing member 2 is arranged on the inner side of the fastening clamping plates 8. The sealing member 2 includes a mounting plate 13 and a sealing cylinder 31. The mounting plate 13 is arranged on both sides of the fastener 1, and the sealing cylinder 31 is arranged horizontally through the fastener 1. Specifically, a spring plate 21 is provided on the outside of the fastening clamp 8, and a first spring 9 and a second spring 10 are respectively provided on the spring plate 21. The other ends of the first spring 9 and the second spring 10 are fixedly provided on the inner wall of the fastener 1. An anti-slip sealing pad 17 is provided on the inside of the fastening clamp 8. The anti-slip sealing pad 17 fits the high-voltage cable connector and is used to seal the connection inlet and outlet lines of the high-voltage cable connector. Specifically, a pulley rope 19 is arranged in the middle of the inner side of the first spring 9, the pulley rope 19 is connected to a movable pulley 23, the movable pulley 23 is connected to a connecting piece 24, the movable pulley 23 is connected to a telescopic mechanism arranged inside the fixed seat 3 through the connecting piece 24, the telescopic mechanism is provided with a mounting seat 28 in the fixed seat 3, the mounting seat 28 is connected to a knob 4 on the outer side of the fixed seat 3, the fixed seat 3 is fixed by bolts, the pulley rope 19 is also provided with a first fixed pulley 18 and a second fixed pulley 20 on the inner side of the fastener 1, the first fixed pulley The wheels 18 are symmetrically arranged on the two ovals of the fastener 1, the second fixed pulley 20 is symmetrically arranged in the middle of the two ovals of the fastener 1, the head end pulley rope 19 is arranged in the middle of the first spring 9 and fixed on the fastening clamp 8, the tail end pulley rope 19 is arranged between the second fixed pulleys 20, and the pulley rope 19 is guided and connected to the connecting member 24 through the first fixed pulley 18 and the second fixed pulley 20, the mounting seat 28 includes a rotating wheel 29 arranged inside, the rotating wheel 29 is connected to the knob 4, and the rotating wheel 29 is also inside A second telescopic rod 27 is embedded, and a first telescopic rod 26 is embedded in the second telescopic rod 27. The first telescopic rod 26 is connected to a connecting rod 25. The connecting rod 25 is arranged on the movable pulley 23, and one end of the connecting rod 25 is arranged on the inner side of the movable pulley 23. The movable pulley 23 is two pulleys, and the two pulleys are connected by a connecting piece 24. A pulley cavity 22 is arranged in the middle of the two ellipses of the fastener 1. The movable pulley 23 and the connecting piece 24 are driven by the first telescopic rod 26 and the second telescopic rod 27 to slide horizontally in the pulley cavity 22 in turn through the rotation of the knob 4 by the threaded transmission. The sealing member 2 and the high-voltage cable connector are clamped and fixed by the fastening clamp 8, and the fixing bolts are installed by the fixing seat 3 to fix the cable in a suitable position. In addition, the first spring 9 and the second spring 10 are arranged on both sides of the fastening clamp 8, so that when the cable shakes, the connecting joint of the high-voltage cable connector and the connecting end of the high-voltage cable can be protected, so that the connection between the cable and the connector can be effectively avoided due to the shaking of the cable. Specifically, a limiting groove 5 and a rotating shaft 7 are also provided on the sealing member 2, and the rotating shaft 7 is connected to the limiting plate 6. A third screw hole 30 is provided on the top of the limiting plate 6 and the limiting groove 5. The sealing member 2 is injected with sealant or epoxy resin between the sealing tube 31 and the cable. A plurality of conical sealing plugs 32 are evenly bonded on the inner circumference of the sealing tube 31. A sealing rubber strip 14 is also provided on the inner side of the lower end of the conical sealing plug 32 near the mounting plate 13. The sealing rubber strip 14 and the conical sealing plug 32 are both made of rubber. The mounting plate 13 also includes a clamping block 15 arranged in the middle and the upper and lower parts and a second screw hole 16 arranged on both sides. The clamping block 15 is embedded with a clamping groove 11, and the second screw hole 16 is correspondingly provided with a first screw hole 12. The clamping groove 11 and the first screw hole 12 are both arranged on the left and right sides of the fastener 1, which are used to seal the connecting inlet and outlet lines of the high-voltage cable connector, and the sealing tube 31 is filled with sealant or epoxy resin to improve the sealing effect of the device.

[0023] During specific use, first, the connection input and output lines of the high-voltage cable connector are inserted and arranged inside the sealing member 2, and after the setting, the sealing member 2 is filled with sealant or epoxy resin to seal it. The clamping block 15 and the second screw hole 16 provided on the sealing member 2 correspond to the clamping grooves 11 and the first screw hole 12 on both sides of the fastener 1, so that the sealing member 2 can be arranged in the middle or on both sides of the fastener 1, so that it can cope with different situations and connect the intermediate joint and the terminal head of the high-voltage cable. When the sealing member 2 is arranged inside the fastener 1, the high-voltage cable connector is arranged at any position on both sides of the fastener 1 through the sealing member 2. When the sealing member 2 is arranged on both sides of the fastener 1, the high-voltage cable connector is arranged in the middle of the fastening clamp 8 in the fastener 1. After the sealing setting of the high-voltage cable connector is completed, the bolts are installed on one side of the fixing seat 3 to fix the fastener 1 in a suitable position.

[0024] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sealing structure for a high-voltage cable joint, comprising a fastener (1) for tightly clamping a cable, a sealing member (2) arranged on both sides of the fastener (1), and a fixing seat (3) for fixing and installing the fastener (1), characterized in that: The fastener (1) is two ellipses symmetrically arranged in the upper and lower parts, and fastening clamps (8) are symmetrically arranged inside the fastener (1). The sealing member (2) is arranged inside the fastening clamps (8), and the sealing member (2) comprises a mounting plate (13) and a sealing cylinder (31). The mounting plate (13) is arranged on both sides of the fastener (1), and the sealing cylinder (31) is arranged to pass through the fastener (1) horizontally.

2. A sealing structure for a high voltage cable joint according to claim 1, characterized in that: A spring plate (21) is arranged on the outside of the fastening clamp (8), a first spring (9) and a second spring (10) are arranged on the spring plate (21), the other ends of the first spring (9) and the second spring (10) are fixedly arranged on the inner wall of the fastener (1), and an anti-slip sealing pad (17) is arranged on the inside of the fastening clamp (8), and the anti-slip sealing pad (17) fits the high-voltage cable connector.

3. A sealing structure for a high-voltage cable joint according to claim 2, characterized in that: A pulley rope (19) is arranged in the middle of the inner side of the first spring (9); the pulley rope (19) is connected to a movable pulley (23); the movable pulley (23) is connected to a connecting piece (24); the movable pulley (23) is connected to a telescopic mechanism arranged inside the fixed seat (3) through the connecting piece (24); the telescopic mechanism is provided with a mounting seat (28) inside the fixed seat (3); and the mounting seat (28) is connected to a knob (4) on the outer side of the fixed seat (3).

4. A sealing structure for a high-voltage cable joint according to claim 3, characterized in that: The pulley rope (19) is further provided with a first fixed pulley (18) and a second fixed pulley (20) on the inner side of the fastener (1); the first fixed pulley (18) is symmetrically arranged on two ellipses of the fastener (1), and the second fixed pulley (20) is symmetrically arranged in the middle of the two ellipses of the fastener (1); the head end pulley rope (19) is arranged in the middle of the first spring (9) and fixed on the fastening clamp (8); the tail end pulley rope (19) is arranged between the second fixed pulleys (20), and the pulley rope (19) is guided through the first fixed pulley (18) and the second fixed pulley (20) to be connected to the connecting member (24).

5. The sealing structure for a high-voltage cable joint according to claim 3, characterized in that: The mounting seat (28) comprises a rotating wheel (29) arranged inside the mounting seat, the rotating wheel (29) being in transmission connection with the knob (4), the rotating wheel (29) also being embedded with a second telescopic rod (27), the second telescopic rod (27) being embedded with a first telescopic rod (26), the first telescopic rod (26) being connected with a connecting rod (25), the connecting rod (25) being arranged on the movable pulley (23), and one end of the connecting rod (25) being arranged on the inner side of the movable pulley (23).

6. A sealing structure for a high voltage cable joint according to claim 5, characterized in that: The movable pulley (23) is two pulleys, and the two pulleys are connected via the connecting member (24).

7. A sealing structure for a high voltage cable joint according to claim 1, characterized in that: A pulley cavity (22) is provided between the two ovals of the fastener (1), and the movable pulley (23) and the connecting member (24) are rotated by the knob (4) to drive the first telescopic rod (26) and the second telescopic rod (27) to slide horizontally in the pulley cavity (22).

8. The sealing structure for a high-voltage cable joint according to claim 1, characterized in that: The mounting plate (13) further comprises a clamping block (15) arranged in the middle and arranged in the upper and lower parts, and second screw holes (16) arranged on both sides, the clamping block (15) is provided with a clamping groove (11) embedded therein, the second screw hole (16) is provided with a first screw hole (12) correspondingly, and the clamping groove (11) and the first screw hole (12) are both provided on the left and right sides of the fastener (1).

9. A sealing structure for a high voltage cable joint according to claim 8, characterized in that: A limiting groove (5) and a rotating shaft (7) are also provided on the mounting plate (13); the rotating shaft (7) is connected to the limiting plate (6); and a third screw hole (30) is provided on the top of the limiting plate (6) and the limiting groove (5).

10. A sealing structure for a high voltage cable joint according to claim 1, characterized in that: The sealing cylinder (31) is symmetrically arranged on the mounting plate (13); a plurality of conical sealing plugs (32) are evenly bonded on the inner circumference of the sealing cylinder (31); a sealing rubber strip (14) is also arranged on the inner side of the lower end of the conical sealing plug (32) close to the mounting plate (13); the sealing rubber strip (14) and the conical sealing plug (32) are both made of rubber.

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