Cable connecting device for low-voltage power generation grid connection and use method thereof

Abstract

The invention discloses a cable connecting device for low-voltage power generation grid connection and a use method thereof, and belongs to the technical field of cable connection. Two locking blocks are extruded, so that a top ring can push a clamping ring out of an annular groove, a left protection sleeve and a right protection sleeve can be rapidly separated, and then the connection state between two cables is relieved; when two cables are connected, a clamping ring is inserted into an annular groove, and a locking block is supported through the elastic force of a fourth spring, so that the locking block can be clamped into a clamping hole, the purpose of quickly assembling and connecting the left protection sleeve and the right protection sleeve is achieved, the situation that the left protection sleeve and the right protection sleeve are loosened or even disconnected when the cables are subjected to external force is prevented, and the service life of the cables is prolonged. The exposed parts of the two cables are protected through the left protection sleeve and the right protection sleeve, interference to signals is reduced, the two cables are connected in a direct insertion mode, automatic locking is carried out at the same time, and the connection stability and operation convenience of the two cables are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable connection, and in particular to a cable connection device for low-voltage power generation and grid connection and a method of using the same. Background Art

[0002] With the continuous development of the economy and society, the reliability of power supply has become more and more important, and users have higher and higher requirements for the reliability of power supply. It is developing from "less power outages" to "no power outages", which puts higher requirements on the maintenance and testing of power equipment. At present, low-voltage generators are widely equipped to provide users with temporary power supply during the maintenance of the substation area.

[0003] Low-voltage power generation and grid connection refers to the process of connecting the electric energy generated by low-voltage power generation equipment (such as small generators, distributed photovoltaic power generation systems, etc.) into the low-voltage distribution network. The intelligent grid-connected control device is used to measure and control the grid connection, realize the monitoring of the power supply on both sides of the power generation vehicle or emergency power supply and the mains power supply, and measure the voltage, frequency and phase of the power supply on both sides in real time. When the grid-connected conditions are met, the grid-connected signal is output to control the grid-connected switch to close the circuit breaker and connect to the grid. When the grid-connected conditions are not met, the circuit breaker is locked and closed. When realizing the rapid connection between the low-voltage cable and the grid-connected device, the plug-in method is usually used for connection or separation to achieve the purpose of conduction or disconnection between the two cables. However, the connection of the cable loses the protection of the shielding layer, which is easy to increase the signal interference of the connection part. Moreover, when the cable is subjected to external force, the connection will become loose, which is prone to poor contact or even disconnection, thereby affecting the signal quality and causing certain safety hazards. Summary of the invention

[0004] The object of the present invention is to provide a cable connection device for low-voltage power generation and grid-connected power generation and a method of using the same, so as to solve the problem raised in the above-mentioned background technology that when realizing the rapid connection between the low-voltage cable and the grid-connected device, the connection or separation is usually carried out by plugging and unplugging to achieve the purpose of conduction or disconnection between the two cables, but the connection of the cable loses the protection of the shielding layer, which easily increases the signal interference of the connection part, and the connection of the cable will become loose when the cable is subjected to external force, which is prone to poor contact or even disconnection.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cable connection device for low-voltage power generation and grid connection, comprising a left protective sleeve and a right protective sleeve, wherein the left protective sleeve and the right protective sleeve are respectively provided with a cable line, and the left protective sleeve and the right protective sleeve are respectively fixed with a wire sleeve on the side away from each other, and the cable wire sleeve is connected in the wire sleeve, and the inner walls of the left protective sleeve and the right protective sleeve are respectively installed with a conducting seat, and the end of the cable line passes through the wire sleeve and is plugged into the conducting seat, and the opposite surfaces of the two conducting seats are respectively provided with a plug-in column and a slot, and the plug-in column is clamped in the slot, and the outer wall of the cable line is provided with a card slot, and a limit assembly is provided in the card slot, and the top and bottom of the wire sleeve are provided with a card slot. Sliding holes are respectively provided at the positions corresponding to the limit components, the limit components are installed in the sliding holes, a sealing protection component is installed inside the wire sleeve, one side of the sealing protection component is overlapped with the cable, a clamping ring is fixed to one side of the left protective sleeve, an annular groove is provided on one side of the right protective sleeve, the clamping ring is clamped in the annular groove, an ejection component is installed in the annular groove, one side of the ejection component is overlapped with the clamping ring, grooves are respectively provided at the top and bottom of the clamping ring, a locking component is installed in the groove, clamping holes are respectively provided at the top and bottom of the right protective sleeve, and the locking component is clamped in the clamping holes.

[0007] As a further solution of the present invention, the limiting assembly includes a card block, which is clamped in a card slot outside the cable, and the card slot is annular in design, the side of the card block close to the left protective sleeve is flat in design, and the side of the card block away from the left protective sleeve is inclined in design, a pull rod is fixed on the card block, the pull rod is U-shaped, and the two ends of the pull rod are sleeved with a first spring, and the ends of the first spring are fixed on the inner wall of the sliding hole and the card block.

[0008] As a further solution of the present invention, the sealing protection assembly includes a pressure plate and a sealing airbag, the pressure plate slides in the wire sleeve, one side of the pressure plate overlaps the outside of the cable, and a plurality of telescopic cylinders are fixed to the other side of the pressure plate, the end of the telescopic cylinder is fixed to one side of the inner wall of the wire sleeve, and a second spring is connected to the outer sleeve of the telescopic cylinder, and the two ends of the second spring are respectively fixed to one side of the telescopic cylinder and the pressure plate.

[0009] As a further solution of the present invention, the sealing airbag is installed on one side of the inner wall of the wire sleeve, the inner wall of the sealing airbag is provided with a plurality of sealing rings and fits with the outer wall of the cable, the sealing airbag is connected to the outside with a plurality of air guide tubes, and the other end of the air guide tube is connected to the end of the telescopic cylinder.

[0010] As a further solution of the present invention, the ejection assembly includes a top ring, which is slidably connected in the annular groove, one side of the top ring is overlapped with the retaining ring, and a plurality of third springs are fixed to the side of the top ring away from the retaining ring, and the ends of the third springs are fixed to the inner wall of the annular groove.

[0011] As a further solution of the present invention, the locking assembly includes a locking block, which is slidably connected in the groove, and two fourth springs are fixedly connected between the locking block and the inner wall of the groove, and the two sides of the locking block are respectively designed with a slope and a plane, and the locking block is clamped in the clamping hole on the right protective cover.

[0012] As a further solution of the present invention, a sealing ring is installed between the left protective sleeve and the right protective sleeve, the convex ring on one side of the left protective sleeve is sleeved on the outer wall of the conductive seat, and one side of the inner wall of the right protective sleeve is overlapped on the convex ring on one side of the left protective sleeve.

[0013] A method for using a cable connection device for low-voltage power generation and grid connection, the method comprising the following steps:

[0014] When the left protective sleeve and the right protective sleeve are separated, the locking assembly is squeezed in the two clamping holes on the right protective sleeve. During the process of the locking assembly being compressed, the locking block slides in the clamping hole and the groove. When the locking block is completely separated from the clamping hole, the locking block squeezes the fourth spring and moves into the groove. At this time, the locking state between the clamping ring and the annular groove is released. Secondly, the top ring is supported by the elastic force of multiple third springs so that the top ring can push the clamping ring out of the annular groove. During this process, the plug-in column can be separated from the slot, so that the left protective sleeve and the right protective sleeve can be quickly separated and the connection state between the two is released.

[0015] When separating the cable from the wire sleeve, the pull rods are pulled to both sides so that the two pull rods respectively drive the two clamping blocks away from each other. When the two clamping blocks are separated from the clamping slots outside the cable, the locking state between the wire sleeve and the cable is released. Secondly, the pressure plate is supported by the elastic force of multiple second springs so that the pressure plate can squeeze the cable, and the cable moves in the wire sleeve. At this time, the clamping slot outside the cable can be misaligned with the clamping block to prevent the clamping block from being re-stuck in the clamping slot when the pull rod is released. Secondly, the wire sleeve and the cable can be quickly separated by pulling the cable outward, thereby completing the entire disassembly work of the device.

[0016] When installing the cable in the left protective sleeve or the right protective sleeve, the cable is inserted into the sleeve so that the exposed part of the end of the cable can pass through the sleeve and be plugged into the conducting seat. At the same time, one side of the outer wall of the cable can push the pressing plate so that the pressing plate can squeeze the multiple telescopic cylinders. The gas inside the telescopic cylinders is pushed into the air guide tube. The air guide tube then guides the gas into the sealing airbag, so that the sealing airbag expands and drives the multiple sealing rings to fit tightly with the outer wall of the cable, thereby achieving the purpose of sealing the cable and the sleeve;

[0017] During the movement of the cable, since one side of the card block is designed to be inclined, the cable can push the card block to move into the sliding hole. When the cable stops moving, the card block is supported by the elastic force of multiple first springs, so that the card block can be inserted into the card slot outside the cable. Since the other side of the card block is designed to be flat, it can be buckled into the card slot to achieve the purpose of locking the cable and the wire sleeve. Since the card slot is designed to be annular, the assembly and connection work can be completed by only inserting the cable into the wire sleeve, and there is no need to rotate the cable to assist the card block in the clamping work.

[0018] When assembling the left and right protective sleeves, the snap ring on one side of the left protective sleeve is inserted into the annular groove on one side of the right protective sleeve. Because the side of the locking block close to the right protective sleeve is inclined, the annular groove can push the locking block into the groove during the movement of the snap ring in the annular groove to prevent the locking block from lifting up and interfering with the travel of the snap ring. At this time, the convex ring on one side of the left protective sleeve is sleeved on the outer wall of the conduction seat, and one side of the inner wall of the right protective sleeve is overlapped on the convex ring on one side of the left protective sleeve, and the left and right protective sleeves are squeezed to extrude the sealing ring to achieve the purpose of sealing connection between the left and right protective sleeves. Secondly, the locking block is supported by the elastic force of the fourth spring so that the locking block can be stuck in the clamping hole. Because the side of the locking block close to the left protective sleeve is flat, it can prevent the locking block from detaching from the clamping hole, thereby achieving the purpose of quick assembly and connection of the left and right protective sleeves, and preventing the left and right protective sleeves from loosening when the cable is subjected to external force.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention squeezes the two locking blocks. When the locking blocks are completely separated from the clamping holes, the locking state between the clamping ring and the annular groove is released. Secondly, the top ring is supported by the elastic force of multiple third springs, so that the top ring can push the clamping ring out of the annular groove. During this process, the plug-in column can be separated from the slot, so that the left protective sleeve and the right protective sleeve can be quickly separated to release the connection state between the two cables. When the two cables are connected, the clamping ring is inserted into the annular groove. Because the side of the locking block close to the right protective sleeve is inclined, the annular groove can push the locking block into the groove to prevent the locking block from interfering with the travel of the clamping ring. At this time, the convex ring on one side of the left protective sleeve is sleeved on the outer wall of the conductive seat, and one side of the inner wall of the right protective sleeve overlaps the one side of the left protective sleeve. On the convex ring, the sealing ring is squeezed by the left protective sleeve and the right protective sleeve to achieve the purpose of sealing connection between the left protective sleeve and the right protective sleeve. Secondly, the locking block is supported by the elastic force of the fourth spring so that the locking block can be inserted into the card hole. Because the side of the locking block close to the left protective sleeve is flat, it can prevent the locking block from escaping from the card hole, thereby achieving the purpose of quick assembly and connection of the left protective sleeve and the right protective sleeve, and preventing the left protective sleeve and the right protective sleeve from loosening or even disconnecting when the cable is subjected to external force. The exposed parts of the two cables are protected by the left and right protective sleeves to reduce interference with the signal. The two cables are connected by direct plug-in and automatically locked at the same time, thereby improving the connection stability of the two cables and the convenience of operation.

[0021] 2. The present invention separates the cable from the wire sleeve by pulling the pull rods to both sides, so that the two pull rods respectively drive the two clamping blocks away from each other. When the two clamping blocks are separated from the clamping slots outside the cable, the locking state between the wire sleeve and the cable is released. Secondly, the elastic force of multiple second springs is used to support the pressure plate, so that the pressure plate can squeeze the cable, and the cable moves in the wire sleeve. At this time, the clamping slot outside the cable can be misaligned with the clamping block, preventing the clamping block from being re-stuck in the clamping slot when the pull rod is released. Secondly, the wire sleeve can be quickly separated from the cable by pulling the cable outward, thereby facilitating The wire sleeve and the cable are disassembled. When assembling the wire sleeve and the cable, the cable is inserted into the wire sleeve. The elastic force of multiple first springs is used to support the card block, so that the card block can be inserted into the card slot outside the cable. Since the other side of the card block is a flat design, it can be buckled into the card slot to achieve the purpose of locking the cable and the wire sleeve. Since the card slot is a ring-shaped design, the assembly and connection work can be completed by only inserting the cable into the wire sleeve. There is no need to rotate the cable to assist the card block in the clamping work, which improves the convenience of disassembling and assembling the cable and the wire sleeve, and is beneficial to the subsequent maintenance or replacement of accessories.

[0022] 3. The present invention installs the cable in the left protective sleeve or the right protective sleeve, and inserts the cable into the wire sleeve, so that the exposed part of the end of the cable can pass through the wire sleeve and be plugged into the conductive seat. At the same time, one side of the outer wall of the cable can push the pressure plate, so that the pressure plate can squeeze multiple telescopic cylinders, and the gas inside the telescopic cylinders is pushed into the air guide tube, and the air guide tube then guides the gas into the sealing airbag, so that the sealing airbag expands and drives multiple sealing rings to fit tightly with the outer wall of the cable, thereby achieving the purpose of sealing the cable and the wire sleeve, preventing external dust or water stains from entering the wire sleeve to cause signal interference, and reducing safety hazards in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a local section of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the left protective sleeve of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the right protective cover of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the cross section of the left protective sleeve of the present invention;

[0029] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0030] Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0031] Figure 8 It is a structural schematic diagram of the sealing protection assembly of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of the left protective sleeve and the wire sleeve cross section of the present invention;

[0033] Fig.10 It is a schematic diagram of the cross-sectional structure of the left protective cover and the right protective cover of the present invention when viewed from the front.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. Left protective cover; 2. Right protective cover; 3. Wire cover; 4. Cable; 5. Conductor seat; 6. Plug column; 7. Slot; 8. Card slot; 9. Limiting assembly; 901. Card block; 902. Pull rod; 903. First spring; 10. Sliding hole; 11. Sealing protection assembly; 111. Press plate; 112. Telescopic cylinder; 113. Second spring; 114. Air guide tube; 115. Sealing airbag; 116. Sealing ring; 12. Card ring; 13. Annular groove; 14. Ejection assembly; 141. Eject ring; 142. Third spring; 15. Sealing ring; 16. Groove; 17. Locking assembly; 171. Locking block; 172. Fourth spring; 18. Card hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 10 , the present invention provides a technical solution:

[0038] A cable connection device for low-voltage power generation and grid connection, comprising a left protective sleeve 1 and a right protective sleeve 2, wherein a cable 4 is respectively arranged in the left protective sleeve 1 and the right protective sleeve 2, and a wire sleeve 3 is respectively fixed on the side of the left protective sleeve 1 and the right protective sleeve 2 away from each other, and the cable 4 is sleeved in the wire sleeve 3, and the exposed parts of the two cable lines 4 are protected by the left protective sleeve 1 and the right protective sleeve 2 to reduce interference with the signal, and the two cable lines 4 are connected by direct plugging, and are automatically locked at the same time, so as to improve the connection stability and operation convenience of the two cable lines 4. Conductive seats 5 are respectively installed on the inner walls of the left protective sleeve 1 and the right protective sleeve 2, and the ends of the cable lines 4 pass through the wire sleeve 3 and are inserted in the conductive seats 5, and the opposite surfaces of the two conductive seats 5 are respectively provided with plug-in columns 6 and slots 7, and the plug-in columns 6 are clamped in the slots 7.

[0039] As a further solution of the present invention, a slot 8 is provided on the outer wall of the cable 4, a limit assembly 9 is provided in the slot 8, and sliding holes 10 are provided at the top and bottom of the wire sleeve 3 at positions corresponding to the limit assembly 9, and the limit assembly 9 is installed in the sliding holes 10. The limit assembly 9 includes a clamping block 901, which is clamped in the slot 8 outside the cable 4, and the clamping slot 8 is annular in design, and the assembly and connection work can be completed by only inserting the cable 4 into the wire sleeve 3, without rotating the cable 4 to assist the clamping work of the clamping block 901.

[0040] The side of the card block 901 close to the left protective cover 1 is of flat design, and the side of the card block 901 away from the left protective cover 1 is of inclined design. A pull rod 902 is fixed on the card block 901, and the pull rod 902 is of U-shaped design, and the two ends of the pull rod 902 are sleeved with a first spring 903, and the ends of the first spring 903 are fixed on the inner wall of the sliding hole 10 and the card block 901. The card block 901 is supported by the elastic force of the first spring 903, so that the card block 901 can be inserted into the card slot 8 outside the cable 4. Because the other side of the card block 901 is of flat design, it can be buckled into the card slot 8, which is convenient for locking the cable 4 and the wire sleeve 3.

[0041] As a further solution of the present invention, a sealing protection component 11 is installed inside the wire sleeve 3, one side of the sealing protection component 11 is overlapped with the cable 4, the sealing protection component 11 includes a pressure plate 111 and a sealing airbag 115, the pressure plate 111 slides in the wire sleeve 3, one side of the pressure plate 111 is overlapped with the outside of the cable 4, and a plurality of telescopic cylinders 112 are fixed to the other side of the pressure plate 111, the end of the telescopic cylinder 112 is fixed to one side of the inner wall of the wire sleeve 3, and a second spring 113 is connected to the outer sleeve of the telescopic cylinder 112, and the two ends of the second spring 113 are respectively fixed to one side of the telescopic cylinder 112 and the pressure plate 111.

[0042] The pressure plate 111 is supported by the elastic force of the second spring 113, so that the pressure plate 111 can squeeze the cable 4, and the cable 4 moves in the wire sleeve 3. At this time, the slot 8 outside the cable 4 can be misaligned with the block 901 to prevent the block 901 from being re-stuck in the slot 8 when the pull rod 902 is released, so as to facilitate the cable 4 to be pulled out of the wire sleeve 3.

[0043] As a further solution of the present invention, a sealing airbag 115 is installed on one side of the inner wall of the cable sleeve 3, and a plurality of sealing rings 116 are provided on the inner wall of the sealing airbag 115 and fit with the outer wall of the cable 4. A plurality of air guide tubes 114 are connected to the outside of the sealing airbag 115, and the other end of the air guide tube 114 is connected to the end of the telescopic cylinder 112. The pressing plate 111 can squeeze the plurality of telescopic cylinders 112, and the gas inside the telescopic cylinder 112 is pushed into the air guide tube 114, and the air guide tube 114 then guides the gas into the sealing airbag 115, so that the sealing airbag 115 expands and drives the plurality of sealing rings 116 to fit closely with the outer wall of the cable 4, thereby improving the sealing effect between the cable 4 and the cable sleeve 3.

[0044] As a further solution of the present invention, a snap ring 12 is fixed on one side of the left protective sleeve 1, and an annular groove 13 is provided on one side of the right protective sleeve 2. The snap ring 12 is snapped into the annular groove 13. An ejection assembly 14 is installed in the annular groove 13, and one side of the ejection assembly 14 overlaps with the snap ring 12. The ejection assembly 14 includes a top ring 141, which is slidably connected in the annular groove 13, one side of the top ring 141 overlaps with the snap ring 12, and a plurality of third springs 142 are fixed on the side of the top ring 141 away from the snap ring 12, and the end of the third spring 142 is fixed to the inner wall of the annular groove 13.

[0045] The elastic force of the plurality of third springs 142 supports the top ring 141, so that the top ring 141 can push the retaining ring 12 out of the annular groove 13. During this process, the plug-in column 6 can be separated from the slot 7, so that the left protective cover 1 and the right protective cover 2 can be quickly separated, thereby improving the convenience of operation.

[0046] As a further solution of the present invention, grooves 16 are respectively provided at the top and bottom of the snap ring 12, a locking assembly 17 is installed in the groove 16, and a clamping hole 18 is respectively provided at the top and bottom of the right protective sleeve 2, and the locking assembly 17 is clamped in the clamping hole 18. The locking assembly 17 includes a locking block 171, the locking block 171 is slidably connected in the groove 16, two fourth springs 172 are fixedly connected between the locking block 171 and the inner wall of the groove 16, and the two sides of the locking block 171 are respectively inclined and flat, and the locking block 171 is clamped in the clamping hole 18 on the right protective sleeve 2.

[0047] Because the side of the locking block 171 close to the right protective sleeve 2 is designed to be inclined, the annular groove 13 can push the locking block 171 into the groove 16 during the movement of the snap ring 12 in the annular groove 13, preventing the locking block 171 from lifting up and interfering with the travel of the snap ring 12. The locking block 171 is supported by the elastic force of the fourth spring 172, so that the locking block 171 can be clamped into the clamping hole 18. Because the side of the locking block 171 close to the left protective sleeve 1 is designed to be flat, it can prevent the locking block 171 from being separated from the clamping hole 18, thereby achieving the purpose of rapid assembly and connection of the left protective sleeve 1 and the right protective sleeve 2.

[0048] As a further solution of the present invention, a sealing ring 15 is installed between the left protective sleeve 1 and the right protective sleeve 2, the convex ring on one side of the left protective sleeve 1 is sleeved on the outer wall of the conductive seat 5, and one side of the inner wall of the right protective sleeve 2 is overlapped on the convex ring on one side of the left protective sleeve 1.

[0049] The convex ring on one side of the left protective sleeve 1 is sleeved on the outer wall of the conductive seat 5, and one side of the inner wall of the right protective sleeve 2 is overlapped on the convex ring on one side of the left protective sleeve 1. The left protective sleeve 1 and the right protective sleeve 2 cooperate to extrude the sealing ring 15 to achieve the purpose of sealing connection between the left protective sleeve 1 and the right protective sleeve 2, and prevent water seepage and dust ingress at the connection.

[0050] A method for using a cable connection device for low-voltage power generation and grid connection, the method comprising the following steps:

[0051] When the left protective sleeve 1 and the right protective sleeve 2 are separated, the locking assembly 17 is squeezed in the two clamping holes 18 on the right protective sleeve 2. During the process of the locking assembly 17 being pressed, the locking block 171 slides in the clamping hole 18 and the groove 16. When the locking block 171 is completely separated from the clamping hole 18, the locking block 171 squeezes the fourth spring 172 and moves into the groove 16. At this time, the locking state between the snap ring 12 and the annular groove 13 is released. Secondly, the top ring 141 is supported by the elastic force of the plurality of third springs 142, so that the top ring 141 can push the snap ring 12 out of the annular groove 13. During this process, the plug-in column 6 can be separated from the slot 7, so that the left protective sleeve 1 and the right protective sleeve 2 can be quickly separated and the connection state between the two is released.

[0052] When the cable 4 is separated from the wire sleeve 3, the pull rod 902 is pulled to both sides so that the two pull rods 902 respectively drive the two clamping blocks 901 away from each other. When the two clamping blocks 901 are separated from the clamping slot 8 outside the cable 4, the locking state between the wire sleeve 3 and the cable 4 is released. Secondly, the elastic force of multiple second springs 113 is used to support the pressure plate 111 so that the pressure plate 111 can squeeze the cable 4, and the cable 4 moves in the wire sleeve 3. At this time, the clamping slot 8 outside the cable 4 can be misaligned with the clamping block 901 to prevent the clamping block 901 from being re-stuck in the clamping slot 8 when the pull rod 902 is released. Secondly, the cable 4 can be pulled outward to quickly separate the wire sleeve 3 from the cable 4, thereby completing the entire disassembly work of the device;

[0053] When the cable 4 is installed in the left protective sleeve 1 or the right protective sleeve 2, the cable 4 is inserted into the wire sleeve 3, so that the exposed part of the end of the cable 4 can pass through the wire sleeve 3 and be plugged into the conductive seat 5, and at the same time, one side of the outer wall of the cable 4 can push the pressing plate 111, so that the pressing plate 111 can squeeze the multiple telescopic cylinders 112, and the gas inside the telescopic cylinder 112 is pushed into the air guide tube 114, and the air guide tube 114 then guides the gas into the sealing airbag 115, so that the sealing airbag 115 expands and drives the multiple sealing rings 116 to fit tightly with the outer wall of the cable 4, so as to achieve the purpose of sealing and connecting the cable 4 and the wire sleeve 3;

[0054] During the movement of the cable 4, since one side of the clamping block 901 is designed to be inclined, the cable 4 can push the clamping block 901 to move into the sliding hole 10. When the cable 4 stops moving, the clamping block 901 is supported by the elastic force of the plurality of first springs 903, so that the clamping block 901 can be clamped into the clamping groove 8 outside the cable 4. Since the other side of the clamping block 901 is designed to be flat, it can be buckled into the clamping groove 8 to achieve the purpose of locking the cable 4 and the wire sleeve 3. Since the clamping groove 8 is designed to be annular, the assembly and connection work can be completed by only inserting the cable 4 into the wire sleeve 3, and there is no need to rotate the cable 4 to assist the clamping work of the clamping block 901.

[0055] When assembling the left protective sleeve 1 and the right protective sleeve 2, the snap ring 12 on one side of the left protective sleeve 1 is inserted into the annular groove 13 on one side of the right protective sleeve 2. Since the side of the locking block 171 close to the right protective sleeve 2 is inclined, the annular groove 13 can push the locking block 171 into the groove 16 during the movement of the snap ring 12 in the annular groove 13, so as to prevent the locking block 171 from lifting up and interfering with the travel of the snap ring 12. At this time, the convex ring on one side of the left protective sleeve 1 is sleeved on the outer wall of the conductive seat 5, and one side of the inner wall of the right protective sleeve 2 is overlapped on the convex ring on one side of the left protective sleeve 1. The sealing ring 15 is extruded by the left protective sleeve 1 and the right protective sleeve 2 to achieve the purpose of sealing connection between the left protective sleeve 1 and the right protective sleeve 2. Secondly, the locking block 171 is supported by the elastic force of the fourth spring 172, so that the locking block 171 can be inserted into the card hole 18. Since the side of the locking block 171 close to the left protective sleeve 1 is a flat design, it can prevent the locking block 171 from being separated from the card hole 18, thereby achieving the purpose of quick assembly and connection between the left protective sleeve 1 and the right protective sleeve 2, and preventing the left protective sleeve 1 and the right protective sleeve 2 from loosening when the cable 4 is subjected to external force.

Claims

1. A cable connection device for low-voltage power generation and grid connection, comprising a left protective sleeve (1) and a right protective sleeve (2), characterized in that: The left protective sleeve (1) and the right protective sleeve (2) are respectively provided with a cable (4); a cable sleeve (3) is fixed on the side of the left protective sleeve (1) and the right protective sleeve (2) away from each other; the cable (4) is sleeved in the cable sleeve (3); the inner walls of the left protective sleeve (1) and the right protective sleeve (2) are respectively provided with a conducting seat (5); the end of the cable (4) passes through the cable sleeve (3) and is inserted into the conducting seat (5); the opposite surfaces of the two conducting seats (5) are respectively provided with a plug-in column (6) and a slot (7); the plug-in column (6) is clamped in the slot (7); the outer wall of the cable (4) is provided with a card slot (8); a limit assembly (9) is provided in the card slot (8); the top and bottom of the cable sleeve (3) are respectively provided with sliding holes (10) at positions corresponding to the limit assembly (9); the limit assembly (9) is provided with a plurality of sliding holes (10) at the top and bottom of the cable sleeve (3 ...). The component (9) is installed in the sliding hole (10), a sealing protection component (11) is installed inside the wire sleeve (3), one side of the sealing protection component (11) is overlapped with the cable (4), a clamping ring (12) is fixed on one side of the left protective sleeve (1), an annular groove (13) is provided on one side of the right protective sleeve (2), the clamping ring (12) is clamped in the annular groove (13), an ejection component (14) is installed in the annular groove (13), one side of the ejection component (14) is overlapped with the clamping ring (12), the top and bottom of the clamping ring (12) are respectively provided with grooves (16), a locking component (17) is installed in the groove (16), the top and bottom of the right protective sleeve (2) are respectively provided with clamping holes (18), the locking component (17) is clamped in the clamping hole (18).

2. A cable connection device for low-voltage power generation and grid connection according to claim 1, characterized in that: The limit assembly (9) comprises a clamping block (901), the clamping block (901) is clamped in a clamping slot (8) outside the cable (4), and the clamping slot (8) is of an annular design. The side of the clamping block (901) close to the left protective sleeve (1) is of a flat design, and the side of the clamping block (901) away from the left protective sleeve (1) is of an inclined design. A pull rod (902) is fixed on the clamping block (901), and the pull rod (902) is of a U-shaped design. The two ends of the pull rod (902) are sleeved with a first spring (903), and the ends of the first spring (903) are fixed to the inner wall of the sliding hole (10) and the clamping block (901).

3. A cable connection device for low-voltage power generation and grid connection according to claim 1, characterized in that: The sealing protection component (11) comprises a pressure plate (111) and a sealing airbag (115); the pressure plate (111) slides in the wire sleeve (3); one side of the pressure plate (111) overlaps the outside of the cable (4); and a plurality of telescopic cylinders (112) are fixed to the other side of the pressure plate (111); the ends of the telescopic cylinders (112) are fixed to one side of the inner wall of the wire sleeve (3); a second spring (113) is connected to the outer shell of the telescopic cylinder (112); and the two ends of the second spring (113) are respectively fixed to one side of the telescopic cylinder (112) and the pressure plate (111).

4. A cable connection device for low-voltage power generation and grid connection according to claim 3, characterized in that: The sealing airbag (115) is installed on one side of the inner wall of the cable sleeve (3); the inner wall of the sealing airbag (115) is provided with a plurality of sealing rings (116) and is in contact with the outer wall of the cable (4); the sealing airbag (115) is connected to the outside with a plurality of air guide tubes (114); the other end of the air guide tube (114) is connected to the end of the telescopic cylinder (112).

5. A cable connection device for low-voltage power generation and grid connection according to claim 1, characterized in that: The ejection assembly (14) comprises a top ring (141), the top ring (141) is slidably connected in the annular groove (13), one side of the top ring (141) overlaps with the retaining ring (12), a plurality of third springs (142) are fixed to the side of the top ring (141) away from the retaining ring (12), and the ends of the third springs (142) are fixed to the inner wall of the annular groove (13).

6. A cable connection device for low-voltage power generation and grid connection according to claim 1, characterized in that: The locking assembly (17) comprises a locking block (171), the locking block (171) is slidably connected in the groove (16), two fourth springs (172) are fixedly connected between the locking block (171) and the inner wall of the groove (16), and the two sides of the locking block (171) are respectively inclined and flat, and the locking block (171) is clamped in the clamping hole (18) on the right protective cover (2).

7. A cable connection device for low-voltage power generation and grid connection according to claim 1, characterized in that: A sealing ring (15) is installed between the left protective sleeve (1) and the right protective sleeve (2); a convex ring on one side of the left protective sleeve (1) is sleeved on the outer wall of the conductive seat (5), and one side of the inner wall of the right protective sleeve (2) is overlapped on the convex ring on one side of the left protective sleeve (1).

8. A method for using a cable connection device for low-voltage power generation and grid connection, according to a cable connection device for low-voltage power generation and grid connection according to any one of claims 1 to 7, characterized in that: The method of use comprises the following steps: When the left protective sleeve (1) and the right protective sleeve (2) are separated, the locking assembly (17) is squeezed in the two clamping holes (18) on the right protective sleeve (2). When the locking assembly (17) is pressed, the locking block (171) slides in the clamping hole (18) and the groove (16). When the locking block (171) is completely separated from the clamping hole (18), the locking block (171) squeezes the fourth spring (172) and moves into the groove (16). At this time, the locking state between the clamping ring (12) and the annular groove (13) is released. Secondly, the top ring (141) is supported by the elastic force of the plurality of third springs (142), so that the top ring (141) can push the clamping ring (12) out of the annular groove (13). During this process, the plug-in column (6) can be separated from the slot (7), so that the left protective sleeve (1) and the right protective sleeve (2) can be quickly separated and the connection state between the two can be released. When the cable (4) is separated from the wire sleeve (3), the pull rod (902) is pulled toward both sides so that the two pull rods (902) respectively drive the two clamping blocks (901) to move away from each other. When the two clamping blocks (901) are separated from the clamping slot (8) outside the cable (4), the locking state between the wire sleeve (3) and the cable (4) is released. Then, the elastic force of the plurality of second springs (113) is used to support the pressure plate (111) so that the pressure plate (111) can squeeze the cable (4), and the cable (4) moves in the wire sleeve (3). At this time, the clamping slot (8) outside the cable (4) can be misaligned with the clamping block (901), so as to prevent the clamping block (901) from being re-stuck in the clamping slot (8) when the pull rod (902) is released. Then, the cable (4) can be pulled outward to quickly separate the wire sleeve (3) from the cable (4), thereby completing the entire disassembly work of the device. When the cable (4) is installed in the left protective sleeve (1) or the right protective sleeve (2), the cable (4) is inserted into the wire sleeve (3) so that the exposed portion of the end of the cable (4) can penetrate the wire sleeve (3) and be plugged into the conductive seat (5). At the same time, one side of the outer wall of the cable (4) can push the pressure plate (111) so that the pressure plate (111) can squeeze the multiple telescopic cylinders (112). The gas inside the telescopic cylinders (112) is pushed into the air guide tube (114). The air guide tube (114) then guides the gas into the sealing airbag (115), so that the sealing airbag (115) expands and drives the multiple sealing rings (116) to fit tightly with the outer wall of the cable (4), thereby achieving the purpose of sealing the cable (4) and the wire sleeve (3); During the movement of the cable (4), since one side of the clamping block (901) is designed to be inclined, the cable (4) can push the clamping block (901) to move into the sliding hole (10); when the cable (4) stops moving, the clamping block (901) is supported by the elastic force of the plurality of first springs (903), so that the clamping block (901) can be clamped into the clamping groove (8) outside the cable (4); since the other side of the clamping block (901) is designed to be flat, it can be buckled into the clamping groove (8) to achieve the purpose of locking the cable (4) and the wire sleeve (3); since the clamping groove (8) is designed to be annular, the assembly and connection work can be completed by simply inserting the cable (4) into the wire sleeve (3), and there is no need to rotate the cable (4) to assist the clamping work of the clamping block (901); When assembling the left protective sleeve (1) and the right protective sleeve (2), the snap ring (12) on one side of the left protective sleeve (1) is inserted into the annular groove (13) on one side of the right protective sleeve (2). Since the side of the locking block (171) close to the right protective sleeve (2) is inclined, the annular groove (13) can push the locking block (171) into the groove (16) during the movement of the snap ring (12) in the annular groove (13), thereby preventing the locking block (171) from lifting up and interfering with the travel of the snap ring (12). At this time, the convex ring on one side of the left protective sleeve (1) is sleeved on the outer wall of the conductive seat (5), and one side of the inner wall of the right protective sleeve (2) is overlapped on the convex ring on one side of the left protective sleeve (1). , cooperate with the left protective sleeve (1) and the right protective sleeve (2) to extrude the sealing ring (15), so as to achieve the purpose of sealing connection between the left protective sleeve (1) and the right protective sleeve (2); secondly, the locking block (171) is supported by the elastic force of the fourth spring (172), so that the locking block (171) can be inserted into the clamping hole (18); because the side of the locking block (171) close to the left protective sleeve (1) is designed as a plane, it can prevent the locking block (171) from being separated from the clamping hole (18), thereby achieving the purpose of rapid assembly and connection between the left protective sleeve (1) and the right protective sleeve (2), and preventing the left protective sleeve (1) and the right protective sleeve (2) from loosening when the cable (4) is subjected to external force.

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