Quick-plug cable joint and pumped storage power station high-voltage waterproof and moistureproof shield

Abstract

The invention belongs to the field of cable protection, and particularly discloses a quick-plug type cable connector and a high-voltage waterproof and moistureproof shield of a pumped storage power station. The quick-plug type cable connector comprises a cable tube, a connecting ring is fixedly connected to the outer side of the cable tube, and a connector is arranged on the outer side of the connecting ring; one end of the connector is located on the radial outer side of the connecting ring and attached to the connecting ring through the first limiting ring, the other end of the connector extends to the axial side of the connecting ring, a plurality of sliding grooves are annularly distributed in the middle of the connector, a clamping block is slidably connected into each sliding groove, and the outer portions of the clamping blocks are connected through clamping sleeves. A mounting cavity is formed among the cable tube, the connecting ring and the connector, a first spring is arranged in the mounting cavity, a second limiting ring located in the mounting cavity is arranged at one end of the first spring, and a clamping block is fixedly connected to the exterior of the second limiting ring; the periphery of the first limiting ring is connected with a plurality of pressing pieces. The sealing performance of the cable connector can be guaranteed, and meanwhile the cable installation difficulty is lowered.

Description

Technical Field

[0001] This invention relates to a cable connector, and more particularly to a quick-connect cable connector and a high-voltage waterproof and moisture-proof protective cover for pumped storage power stations. Background Technology

[0002] During the laying of high-voltage cable systems in pumped-storage power stations, protective covers are needed to connect two cables, ensuring cable continuity and connection stability. To achieve cable fixation and sealing, and to prevent external moisture and impurities from entering the protective cover through the joint between the cable and the cover, existing protective covers typically employ a multi-segment splicing structure. Multiple interfaces and multiple layers of seals are installed at the connection points between the protective cover and the cable. These interfaces are then aligned and bolted together, causing the seals to deform under pressure and achieve a seal. While this structure meets the safety requirements of high-voltage scenarios, it presents challenges due to its cumbersome installation process and high precision requirements, increasing the difficulty of cable installation and wiring for workers.

[0003] Therefore, the cable joints of existing high-voltage cable protection covers have problems such as complex structure and cumbersome operation. Summary of the Invention

[0004] The purpose of this invention is to provide a quick-connect cable connector and a high-voltage waterproof and moisture-proof protective cover for pumped storage power stations. It can reduce the difficulty of cable installation while ensuring the sealing performance of the cable connector.

[0005] The technical solution of the present invention: A quick-connect cable connector includes a cable tube, a connecting ring fixedly connected to the outside of the cable tube, a connector provided on the outside of the connecting ring, one end of the connector being located radially outside the connecting ring and fitting against the connecting ring via a first limiting ring, the other end of the connector extending to one axial side of the connecting ring, multiple sliding grooves distributed in a ring in the middle of the connector, a locking block slidably connected in each sliding groove, the outer sides of each locking block being interconnected via a retaining sleeve, an installation cavity being formed between the cable tube, the connecting ring and the connector, a first spring being provided in the installation cavity, a second limiting ring located in the installation cavity at one end of the first spring, the locking block being fixedly connected to the outside of the second limiting ring; multiple clamping members are connected around the first limiting ring, the second limiting ring and the connecting ring being respectively connected to the two sides of the clamping members; The first spring is used to apply pressure toward the clamping member to the second limiting ring; The second limiting ring is used to apply a radially inward compressive force to the clamping member under the action of the first spring; The clamping member is used to limit the connecting ring under the squeezing force of the second limiting ring.

[0006] In the aforementioned quick-connect cable connector, the connector has a mounting portion at the end away from the connecting ring, and one end of the first spring is in contact with the mounting portion.

[0007] In the aforementioned quick-connect cable connector, multiple pressure plates are arranged in a ring on one side of the second limiting ring, and the inner side of the pressure plates is in contact with the clamping member via an inclined surface.

[0008] In the aforementioned quick-connect cable connector, the clamping element is a steel ball. The steel ball is fastened to the first limiting ring through the mounting hole. The connecting ring is provided with a limiting groove that matches the steel ball. The inner side of the steel ball passes through the first limiting ring and is fastened to the limiting groove. The outer side of the steel ball is in contact with the inclined surface.

[0009] A high-voltage waterproof and moisture-proof protective cover for a pumped storage power station is also provided, including a protective box on which the aforementioned quick-connect cable connector is connected.

[0010] In the aforementioned high-pressure waterproof and moisture-proof protective cover for pumped storage power stations, the quick-connect cable connectors are symmetrically arranged on both sides of the protective box. One end of the connector is fixedly connected to the outer wall of the protective box, and the middle part of the cable tube is fastened to the protective box via the quick-connect cable connector. One end of the cable tube extends to the inside of the protective box.

[0011] In the aforementioned high-pressure waterproof and moisture-proof protective cover for pumped storage power stations, the protective box includes a box body and a cover plate. The two sides of the box body and the cover plate are connected to each other by a locking mechanism. The locking mechanism includes a fixing sleeve that is fixedly connected to the cover plate. Two locking plates are fastened to both ends of the fixing sleeve. The middle part of the locking plate is rotatably connected to the box body. The locking plate forms a connecting piece at the end away from the fixing sleeve. The connecting pieces on both sides of the fixing sleeve are connected to each other by a second spring.

[0012] In the aforementioned high-pressure waterproof and moisture-proof protective cover for pumped storage power stations, the cover plate is provided with sealing strips that fit the box body around its four edges.

[0013] In the aforementioned high-pressure waterproof and moisture-proof protective cover for pumped storage power stations, the bottom of the cover plate is fastened to a sealing strip via an annular groove, and the top of the box body is fastened to a groove via an annular strip. The outer end of the sealing strip is in contact with the strip.

[0014] Compared with the prior art, the present invention has the following characteristics: (1) By limiting the structure of the quick-connect cable connector, the present invention enables the cable pipe to be fixed after insertion by the cooperation of the connecting ring, the second limiting ring and the clamping member, thereby effectively preventing the axial movement of the cable after installation; at the same time, the cooperation of the connecting ring, the second limiting ring and the connector can wrap and seal the cable from the outside after insertion, effectively preventing external rainwater and impurities from entering the joint between the connector and the cable pipe and entering the protective cover; on this basis, when the cable pipe needs to be installed or removed, the operator only needs to slide the sleeve to drive the second limiting ring to disengage from the clamping member, which can release the clamping member from the limiting of the connecting ring, so that the cable pipe can be directly inserted or pulled out under the action of external force, thereby effectively reducing the difficulty of installing and removing the cable pipe; (2) By using steel balls as clamping parts and interlocking with the connecting ring, the clamping parts can be aligned and rigidly limited after the cable pipe is inserted and fixed, which effectively prevents the cable pipe and the connecting ring from slipping out under external force, thus ensuring the connection stability and sealing effect of the cable pipe. (3) By limiting the structure of the protective box and the locking mechanism, the cover can be fixed by the locking mechanism after installation, thereby ensuring the sealing effect of the sealing strip on the box and the cover at the joint; on this basis, when the cover needs to be removed, the operator only needs to press the connecting parts on both sides of the fixing sleeve to drive the locking plate to disengage and open, thereby effectively reducing the difficulty of installing and removing the cover. Therefore, this invention can reduce the difficulty of cable installation while ensuring the sealing performance of the cable joint. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is an external view of Example 2; Figure 3 This is a schematic diagram of the structure of Embodiment 2 with part of the cover plate hidden; Figure 4 yes Figure 3 A magnified view from direction A.

[0016] The labels in the attached diagram are as follows: 1-Cable conduit, 2-Connecting ring, 3-Joint, 4-Card block, 5-Card sleeve, 6-Mounting cavity, 7-First spring, 8-Second limiting ring, 9-Clamping component, 10-Protective box, 11-Fixing sleeve, 12-Locking plate, 13-Second spring, 14-Sealing strip, 201-Limiting groove, 301-First limiting ring, 302-Sliding groove, 303-Mounting part, 304-Mounting hole, 801-Pressure plate, 101-Box body, 102-Cover plate, 103-Card groove, 104-Card strip, 121-Connecting component. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example 1. A quick-connect cable connector, configured as follows: Figure 1 As shown, the device includes a cable conduit 1, with a connecting ring 2 fixedly connected to the outside of the cable conduit 1. A connector 3 is provided on the outside of the connecting ring 2. One end of the connector 3 is located radially outside the connecting ring 2 and is fitted to the connecting ring 2 via a first limiting ring 301. A first sealing ring can be provided at the fitting point between the first limiting ring 301 and the connecting ring 2 for sealing. The other end of the connector 3 extends to one axial side of the connecting ring 2. Multiple sliding grooves 302 are arranged in a ring shape in the middle of the connector 3. A locking block 4 is slidably connected within each sliding groove 302. The sliding direction of the locking block 4 is towards the connector 3. Along the axial direction, the outer sides of each locking block 4 are connected to each other via a locking sleeve 5. The locking sleeve 5 is fitted on the outside of the connector 3 and slides to connect the connector 3. An installation cavity 6 is formed between the cable pipe 1, the connecting ring 2 and the connector 3. A first spring 7 is provided in the installation cavity 6. A second limiting ring 8 located in the installation cavity 6 is provided at one end of the first spring 7. The second limiting ring 8 slides to connect to the inner wall of the connector. The outer side of the second limiting ring 8 is fixedly connected to the locking block 4. Multiple clamping members 9 are connected around the first limiting ring 301. The second limiting ring 8 and the connecting ring 2 are respectively connected to the two sides of the clamping members 9. The first spring 7 is used to apply pressure toward the clamping member 9 to the second limiting ring 8; The second limiting ring 8 is used to apply a radially inward compressive force to the clamping member 9 under the action of the first spring 7; The clamping member 9 is used to limit the connecting ring 2 under the squeezing force of the second limiting ring 8.

[0019] The sleeve 5, the block 4, and the second limiting ring 8 are connected to each other by screws.

[0020] The first limiting ring 301 and the connector 3 are nested inside and outside and connected to each other by a connecting rib. The connecting rib is located on the outer side of the end of the mounting cavity 6 and seals the mounting cavity 6. The first limiting ring 301, the connector 3 and the connecting rib are integrally formed and the connecting rib and the clamping member 9 are offset from each other along the axial direction.

[0021] The connector 3 has an L-shaped mounting portion 303 at the end away from the connecting ring 2, and one end of the first spring 7 is in contact with the mounting portion 303.

[0022] The second limiting ring 8 has multiple pressure plates 801 arranged in a ring on one side. Each pressure plate 801 corresponds to a clamping member 9. The inner side of the pressure plate 801 is in contact with the clamping member 9 via an inclined surface.

[0023] The clamping component 9 is a steel ball. The steel ball is fastened to the first limiting ring 301 through the mounting hole 304. The connecting ring 2 is provided with a limiting groove 201 that matches the steel ball. The inner side of the steel ball passes through the first limiting ring 301 and is fastened to the limiting groove 201. The outer side of the steel ball is in contact with the inclined surface.

[0024] In this embodiment, during use, the operator first slides the sleeve 5 axially to move the second limiting ring 8 away from the clamping member 9, thereby releasing the radial limitation on the clamping member 9. Then, the cable pipe 1 with the connecting ring 2 fixed thereon is passed through the middle of the connector 3, causing the limiting groove 201 on the connecting ring 2 to engage with the clamping member 9, thus achieving axial limitation on the cable pipe 1. After the cable pipe 1 is inserted into place, the operator releases the sleeve 5, causing the first spring 7 to drive the second limiting ring 8 to slide to the limiting position, and the pressure plate 801 squeezes and limits the radial position of the clamping member 9, preventing the clamping member 9 from moving radially outward in this state, thus ensuring the stable engagement and limitation of the clamping member 9 with the connecting ring 2.

[0025] With the above-mentioned coordination, operators can quickly insert and remove cable conduits 1 simply by sliding the sleeve 5, effectively reducing the difficulty of fixing cable conduits 1. At the same time, the quick-connect cable connector can achieve rigid positioning and sealing of cable conduits 1 after insertion, ensuring the fixing and sealing effect of cable conduits 1.

[0026] Example 2. A high-pressure waterproof and moisture-proof protective cover for a pumped storage power station, comprising the following structure: Figure 2-4 As shown, the device includes a protective box 10, with quick-connect cable connectors on both sides. Each quick-connect cable connector includes a cable conduit 1, with a connecting ring 2 fixedly connected to the outside of the cable conduit 1. A connector 3 is located on the outside of the connecting ring 2. One end of the connector 3 is located radially outside the connecting ring 2 and is fitted to the connecting ring 2 via a first limiting ring 301. A first sealing ring can be provided at the fitting point between the first limiting ring 301 and the connecting ring 2 for sealing. The other end of the connector 3 extends to one axial side of the connecting ring 2. Multiple grooves 302 are arranged in a ring shape in the middle of the connector 3, and each groove 302 is slidably connected to a [missing information - likely a cable connector]. A locking block 4 slides in the axial direction of the connector 3. The outer sides of each locking block 4 are connected to each other via a retaining sleeve 5. The retaining sleeve 5 is fitted on the outside of the connector 3 and slides to connect the connector 3. An installation cavity 6 is formed between the cable pipe 1, the connecting ring 2, and the connector 3. A first spring 7 is provided in the installation cavity 6. One end of the first spring 7 is provided with a second limiting ring 8 located in the installation cavity 6. The second limiting ring 8 slides to connect to the inner wall of the connector. The outer side of the second limiting ring 8 is fixedly connected to the locking block 4. Multiple clamping members 9 are connected around the first limiting ring 301. The second limiting ring 8 and the connecting ring 2 are respectively connected to the two sides of the clamping members 9. The first spring 7 is used to apply pressure toward the clamping member 9 to the second limiting ring 8; The second limiting ring 8 is used to apply a radially inward compressive force to the clamping member 9 under the action of the first spring 7; The clamping member 9 is used to limit the connecting ring 2 under the squeezing force of the second limiting ring 8.

[0027] The sleeve 5, the block 4, and the second limiting ring 8 are connected to each other by screws.

[0028] The first limiting ring 301 and the connector 3 are nested inside and outside and connected to each other by a connecting rib. The connecting rib is located on the outer side of the end of the mounting cavity 6 and seals the mounting cavity 6. The first limiting ring 301, the connector 3 and the connecting rib are integrally formed and the connecting rib and the clamping member 9 are offset from each other along the axial direction.

[0029] The connector 3 has an L-shaped mounting portion 303 at the end away from the connecting ring 2, and one end of the first spring 7 is in contact with the mounting portion 303.

[0030] The second limiting ring 8 has multiple pressure plates 801 arranged in a ring on one side. Each pressure plate 801 corresponds to a clamping member 9. The inner side of the pressure plate 801 is in contact with the clamping member 9 via an inclined surface.

[0031] The clamping component 9 is a steel ball. The steel ball is fastened to the first limiting ring 301 through the mounting hole 304. The connecting ring 2 is provided with a limiting groove 201 that matches the steel ball. The inner side of the steel ball passes through the first limiting ring 301 and is fastened to the limiting groove 201. The outer side of the steel ball is in contact with the inclined surface.

[0032] One end of the quick-connect cable connector 3 is fixedly connected to the outer wall of the protective box 10 via the mounting part 303. A second sealing ring can be provided between the mounting part 303 and the protective box 10 for sealing. One end of the cable tube 1 passes through the connector 3 and extends to the inside of the protective box 10.

[0033] The protective box 10 includes a box body 101 and a cover plate 102. The two sides of the box body 101 and the cover plate 102 are connected to each other by a locking mechanism. The locking mechanism includes a fixing sleeve 11 fixedly connected to the bottom edge of the cover plate 102. Two locking plates 12 are fastened to both ends of the fixing sleeve 11. The locking plates 12 are L-shaped. The middle part of the locking plates 12 is rotatably connected to the box body 101. A connecting member 121 is formed at the end of the locking plate 12 away from the fixing sleeve 11. The connecting members 121 on both sides of the fixing sleeve 11 are connected to each other by a second spring 13.

[0034] The cover plate 102 is provided with sealing strips 14 that fit the box body 101 at its four edges.

[0035] The bottom of the cover plate 102 is fastened to the sealing strip 14 via an annular groove 103, and the top of the box body 101 is fastened to the groove 103 via an annular strip 104. The outer end of the sealing strip 14 is in contact with the strip 104.

[0036] Based on Embodiment 1, this embodiment further defines the structure of the protective cover. By defining the connection structure between the box body 101 and the cover plate 102, the box body 101 and the cover plate 102 can be interlocked during installation through the cooperation of the slot 103 and the clip 104, and sealed by the sealing strip 14, thereby ensuring the sealing performance of the connection between the two.

[0037] Furthermore, by defining the structure of the locking mechanism, on the one hand, the cover plate 102 can be locked and pressed firmly after installation, ensuring the sealing effect of the box body 101 and the cover plate 102. On the other hand, during operation, the operator only needs to tighten or loosen the connecting piece 121 to unlock and lock the cover plate 102, which effectively improves the operator's ease of operation.

[0038] Example 3. A high-pressure waterproof and moisture-proof protective cover for a pumped storage power station, comprising the following structure: Figure 2-4 As shown, the device includes a protective box 10, with cable connectors on both sides. These cable connectors are quick-connect cable connectors commonly used in the field for cable protection boxes. One end of the cable conduit 1 passes through the cable connector and extends into the inside of the protective box 10.

[0039] The protective box 10 includes a box body 101 and a cover plate 102. The two sides of the box body 101 and the cover plate 102 are connected to each other by a locking mechanism. The locking mechanism includes a fixing sleeve 11 fixedly connected to the bottom edge of the cover plate 102. Two locking plates 12 are fastened to both ends of the fixing sleeve 11. The locking plates 12 are L-shaped. The middle part of the locking plates 12 is rotatably connected to the box body 101. A connecting member 121 is formed at the end of the locking plate 12 away from the fixing sleeve 11. The connecting members 121 on both sides of the fixing sleeve 11 are connected to each other by a second spring 13.

[0040] The cover plate 102 is provided with sealing strips 14 that fit the box body 101 at its four edges.

[0041] The bottom of the cover plate 102 is fastened to the sealing strip 14 via an annular groove 103, and the top of the box body 101 is fastened to the groove 103 via an annular strip 104. The outer end of the sealing strip 14 is in contact with the strip 104.

[0042] This embodiment limits the connection structure between the box body 101 and the cover plate 102, so that the box body 101 and the cover plate 102 can be interlocked by the cooperation of the slot 103 and the strip 104 during installation, and sealed by the sealing strip 14, thereby ensuring the sealing performance of the connection between the two.

[0043] Example 4. A quick-connect cable connector, configured as follows: Figure 1 As shown, the device includes a cable conduit 1, with a connecting ring 2 fixedly connected to the outside of the cable conduit 1. A connector 3 is provided on the outside of the connecting ring 2. One end of the connector 3 is located radially outside the connecting ring 2 and is fitted to the connecting ring 2 via a first limiting ring 301. A first sealing ring can be provided at the fitting point between the first limiting ring 301 and the connecting ring 2 for sealing. The other end of the connector 3 extends to one axial side of the connecting ring 2. Multiple sliding grooves 302 are arranged in a ring shape in the middle of the connector 3. A locking block 4 is slidably connected within each sliding groove 302. The sliding direction of the locking block 4 is towards the connector 3. Along the axial direction, the outer sides of each locking block 4 are connected to each other via a locking sleeve 5. The locking sleeve 5 is fitted on the outside of the connector 3 and slides to connect the connector 3. An installation cavity 6 is formed between the cable pipe 1, the connecting ring 2 and the connector 3. A first spring 7 is provided in the installation cavity 6. A second limiting ring 8 located in the installation cavity 6 is provided at one end of the first spring 7. The second limiting ring 8 slides to connect to the inner wall of the connector. The outer side of the second limiting ring 8 is fixedly connected to the locking block 4. Multiple clamping members 9 are connected around the first limiting ring 301. The second limiting ring 8 and the connecting ring 2 are respectively connected to the two sides of the clamping members 9. The first spring 7 is used to apply pressure toward the clamping member 9 to the second limiting ring 8; The second limiting ring 8 is used to apply a radially inward compressive force to the clamping member 9 under the action of the first spring 7; The clamping member 9 is used to limit the connecting ring 2 under the squeezing force of the second limiting ring 8.

[0044] The two ends of the card block 4 extend to the inner and outer sides of the connector 3 respectively and are engaged with the card sleeve 5 and the second limiting ring 8. The card sleeve 5, the card block 4 and the second limiting ring 8 are glued together at the engagement point.

[0045] The first limiting ring 301 and the connector 3 are nested inside and outside and connected to each other by a connecting rib. The connecting rib is located on the outer side of the end of the mounting cavity 6 and seals the mounting cavity 6. The first limiting ring 301, the connector 3 and the connecting rib are integrally formed and the connecting rib and the clamping member 9 are offset from each other along the axial direction.

[0046] The connector 3 has an L-shaped mounting portion 303 at the end away from the connecting ring 2, and one end of the first spring 7 is in contact with the mounting portion 303.

[0047] The second limiting ring 8 has multiple pressure plates 801 arranged in a ring on one side. Each pressure plate 801 corresponds to a clamping member 9. The inner side of the pressure plate 801 is in contact with the clamping member 9 via an inclined surface.

[0048] The clamping component 9 is a steel ball. The steel ball is fastened to the first limiting ring 301 through the mounting hole 304. The connecting ring 2 is provided with a limiting groove 201 that matches the steel ball. The inner side of the steel ball passes through the first limiting ring 301 and is fastened to the limiting groove 201. The outer side of the steel ball is in contact with the inclined surface.

[0049] Compared with Embodiment 1, this embodiment adjusts the connection structure of the card sleeve 5, card block 4 and second limiting ring 8, which can also achieve its limiting and driving functions.

[0050] Example 1. A quick-connect cable connector, configured as follows: Figure 1 As shown, the device includes a cable conduit 1, with a connecting ring 2 fixedly connected to the outside of the cable conduit 1. A connector 3 is provided on the outside of the connecting ring 2. One end of the connector 3 is located radially outside the connecting ring 2 and is fitted to the connecting ring 2 via a first limiting ring 301. A first sealing ring can be provided at the fitting point between the first limiting ring 301 and the connecting ring 2 for sealing. The other end of the connector 3 extends to one axial side of the connecting ring 2. Multiple sliding grooves 302 are arranged in a ring shape in the middle of the connector 3. A locking block 4 is slidably connected within each sliding groove 302. The sliding direction of the locking block 4 is towards the connector 3. Along the axial direction, the outer sides of each locking block 4 are connected to each other via a locking sleeve 5. The locking sleeve 5 is fitted on the outside of the connector 3 and slides to connect the connector 3. An installation cavity 6 is formed between the cable pipe 1, the connecting ring 2 and the connector 3. A first spring 7 is provided in the installation cavity 6. A second limiting ring 8 located in the installation cavity 6 is provided at one end of the first spring 7. The second limiting ring 8 slides to connect to the inner wall of the connector. The outer side of the second limiting ring 8 is fixedly connected to the locking block 4. Multiple clamping members 9 are connected around the first limiting ring 301. The second limiting ring 8 and the connecting ring 2 are respectively connected to the two sides of the clamping members 9. The first spring 7 is used to apply pressure toward the clamping member 9 to the second limiting ring 8; The second limiting ring 8 is used to apply a radially inward compressive force to the clamping member 9 under the action of the first spring 7; The clamping member 9 is used to limit the connecting ring 2 under the squeezing force of the second limiting ring 8.

[0051] The sleeve 5, the block 4, and the second limiting ring 8 are connected to each other by screws.

[0052] The first limiting ring 301 and the connector 3 are nested inside and outside and connected to each other by a connecting rib. The connecting rib is located on the outer side of the end of the mounting cavity 6 and seals the mounting cavity 6. The first limiting ring 301, the connector 3 and the connecting rib are integrally formed and the connecting rib and the clamping member 9 are offset from each other along the axial direction.

[0053] The connector 3 has an L-shaped mounting portion 303 at the end away from the connecting ring 2, and one end of the first spring 7 is in contact with the mounting portion 303.

[0054] The second limiting ring 8 has multiple pressure plates 801 arranged in a ring on one side. Each pressure plate 801 corresponds to a clamping member 9. The inner side of the pressure plate 801 is in contact with the clamping member 9 via an inclined surface.

[0055] The clamping component 9 is a nylon block or a rubber block. The steel ball is fastened to the first limiting ring 301 through the mounting hole 304. The connecting ring 2 is provided with a limiting groove 201 that matches the clamping component 9. The inner side of the clamping component 9 passes through the first limiting ring 301 and is fastened to the limiting groove 201. The outer side of the clamping component 9 is in contact with the inclined surface.

[0056] Compared with Example 1, this example adjusts the material and structure of the clamping member 9, which can also achieve the function of limiting the cable after insertion.

Claims

1. A quick-plug cable joint, characterized by: The utility model relates to a quick plug type cable joint, including cable pipe (1), the outside fixed connection of cable pipe (1) is connected ring (2), the outside of connected ring (2) is equipped with joint (3), one end of joint (3) is located the radial outside of connected ring (2) and is mutually pasted with connected ring (2) through first limit ring (301), the other end of joint (3) extends to the axial one side of connected ring (2), the middle part of joint (3) is annularly distributed with a plurality of sliding slot (302), each sliding slot (302) is slidably connected with a clamping block (4), and the outside of each clamping block (4) is connected with each other through a clamping sleeve (5), and the installation cavity (6) is formed between cable pipe (1), connected ring (2) and joint (3), first spring (7) is equipped in installation cavity (6), one end of first spring (7) is equipped with the second limit ring (8) in installation cavity (6), and the outside of second limit ring (8) is fixedly connected clamping block (4); The first spring (7) is used to apply a pressure to the second limit ring (8) towards the tight pressing piece (9); The second limit ring (8) is used to apply a radial inward extrusion force to the tight pressing piece (9) under the action of the first spring (7); The tight pressing piece (9) is used to limit the connected ring (2) under the extrusion force of the second limit ring (8).

2. A quick-plug cable joint according to claim 1, characterized in that: The joint (3) forms a mounting portion (303) at the end away from the connected ring (2), and one end of the first spring (7) is in contact with the mounting portion (303).

3. A quick-plug cable joint according to claim 1, characterized in that: The second limit ring (8) is annularly distributed with a plurality of pressing tablets (801) on one side, and the inner side of the pressing tablet (801) is in contact with the tight pressing piece (9) through a slope.

4. A quick-plug cable joint according to claim 3, characterised in that: The tight pressing piece (9) is a steel ball, which is connected to the first limit ring (301) through a mounting hole (304), the connected ring (2) is provided with a limiting groove (201) matched with the steel ball, the inner side of the steel ball passes through the first limit ring (301) and is connected to the limiting groove (201), and the outer side of the steel ball is in contact with the slope.

5. A high voltage waterproof and moisture-proof shield for pumped storage power stations, characterized in that: The utility model relates to a quick plug type cable joint, including cable pipe (1), the outside fixed connection of cable pipe (1) is connected ring (2), the outside of connected ring (2) is equipped with joint (3), one end of joint (3) is located the radial outside of connected ring (2) and is mutually pasted with connected ring (2) through first limit ring (301), the other end of joint (3) extends to the axial one side of connected ring (2), the middle part of joint (3) is annularly distributed with a plurality of sliding slot (302), each sliding slot (302) is slidably connected with a clamping block (4), and the outside of each clamping block (4) is connected with each other through a clamping sleeve (5), and the installation cavity (6) is formed between cable pipe (1), connected ring (2) and joint (3), first spring (7) is equipped in installation cavity (6), one end of first spring (7) is equipped with the second limit ring (8) in installation cavity (6), and the outside of second limit ring (8) is fixedly connected clamping block (4); 6. The pumped storage power plant high voltage waterproof and moistureproof shield according to claim 5, characterized in that: The quick plug type cable joint is symmetrically arranged on both sides of the protection box (10), one end of the joint (3) is fixedly connected to the outer wall of the protection box (10), the middle part of the cable pipe (1) is connected to the protection box (10) through the quick plug type cable joint, and one end of the cable pipe (1) extends to the inner side of the protection box (10).

7. The pumped storage power plant high voltage waterproof and moistureproof shield according to claim 5, characterized in that: The protective box (10) comprises a box body (101) and a cover plate (102), two sides of the box body (101) and the cover plate (102) are connected with each other through a locking mechanism, the locking mechanism comprises a fixing sleeve (11) fixedly connected with the cover plate (102), two lock plates (12) are buckled and connected at two ends of the fixing sleeve (11), the middle part of the lock plate (12) is rotatably connected with the box body (101), the lock plate (12) is formed with a connecting piece (121) at the end away from the fixing sleeve (11), and the connecting pieces (121) on the two sides of the fixing sleeve (11) are connected with each other through a second spring (13).

8. The pumped storage power plant high voltage waterproof and moistureproof shield according to claim 7, characterized in that: Sealing strips (14) are arranged at the four peripheral edges of the cover plate (102) and are attached to the box body (101).

9. The pumped storage power plant high voltage waterproof and moistureproof shield according to claim 8, characterized in that: The bottom of the cover plate (102) is buckled and connected with the sealing strips (14) through an annular clamping groove (103), the top of the box body (101) is buckled and connected with the clamping groove (103) through an annular clamping strip (104), and the outer ends of the sealing strips (14) and the clamping strip (104) are attached to each other.

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