Insulation protection device for cable partial discharge monitoring

Abstract

The invention discloses an insulation protection device for cable partial discharge monitoring, which comprises an insulation protection device body, the insulation protection device body comprises an insulation protection sleeve, the top of the insulation protection sleeve is provided with two symmetrically arranged wire clamping shells, and the bottom of the lower wire clamping shell is communicated and fixed with the top end of the protection sleeve. According to the invention, a series of structures are arranged, so that six-point clamping sealing and outer-side buckling sealing waterproof of a wire can be realized synchronously when two wire clamping shells are in butt joint, and a water retaining and drainage treatment mode can be carried out by separating multiple areas when water enters the two sides accidentally; the effect of stable and long-acting safe waterproof on the part a of the internal detection area is achieved, the waterproof stability of the detection position is improved, two-point one-body pressing and locking of the wire clamping shell are directly achieved through single-position rotation operation, the thread meshing part is elastically tightened all the time, vibration and looseness are prevented, independent operation through multiple points and a special tool is not needed, operation is easy and convenient, and the working efficiency is improved. And the fixing efficiency and convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of insulation protection equipment, and specifically to an insulation protection device for cable partial discharge monitoring. Background Art

[0002] The insulation protection device currently in use is a post insulator. A post insulator is a special insulation control component that plays an important role in overhead transmission lines. It is usually made of silica gel or ceramics. Insulators play two basic roles in overhead transmission lines, namely supporting the conductor and preventing current from returning to the ground. These two roles must be ensured; in the patent "Lightning Protection Post Insulator" with the application number 201821351881.1, during the installation process of the insulated wire and the insulator, the initial positioning of the wire is first achieved by using the limiting component to realize the preliminary installation of the insulator and the insulated wire. At this time, the insulator is located on the insulated wire, the positions of the insulator and the insulated wire are relatively stable, and the part of the insulated wire located between the two limiting components is also in a stable position. Only by operating the pressure plate can the puncture needle pierce the insulation layer of the insulated wire. During the operation, the insulated wire at the position of the pressure plate is not easy to shake, and the operation is convenient, safe and reliable; however, after the installation is completed, external moisture is likely to enter the inside of the wire clamping block from both ends of the wire clamping block, affecting the wires inside the wire clamping block.

[0003] To avoid this situation, according to the retrieval report of the novelty search agency, the patent with the publication number CN212182051U discloses an insulation protection device for high-voltage cable partial discharge monitoring, including an insulation protection sleeve. Threaded cylinders are welded to both ends of the wire clamping block. One end of the threaded cylinder is provided with an installation cylinder. A threaded groove is opened at one end of the installation cylinder corresponding to the position of the threaded cylinder. A moving groove is opened at one end of the installation cylinder. First springs are uniformly welded to the top and bottom of the inside of the moving groove. The bottom and top of the installation cylinder are both installed with screw rods through threaded holes. One end of the moving ring is adhered with an insulating rubber rod; it can seal both ends of the wire clamping block to prevent external dust and water stains from entering the inside of the wire clamping block along the two wire clamping blocks, affecting the wires inside the wire clamping block and thus affecting the entire circuit, improving the safety of the circuit. At the same time, the staff can fix the wire again through the moving ring, making the wire fixed more stably and not easy to shake.

[0004] The above-mentioned insulation protection device for high-voltage cable partial discharge monitoring disclosed in the technology fixes the work by inserting two bolts and two nuts through the wire clamping block. The two wire clamping blocks are docked to drive the structures on both sides to clamp the wire. The installation rings and clamping rings arranged on the outside of the wire clamping block are buckled on the outside after docking. Then, the screw rods on both sides fix the parts where the wire passes through and exits, forming an effect of protecting the insulation skin breaking detection part of the internal wire. However, there are the following deficiencies in use:

[0005] 1. In the way that two bolts are inserted and fixed through two wire clamping blocks, there is a risk of water seeping into the thread seam subsequently, and the bolts are inevitably loosened under long-term vibration. There is a lack of a structure for separating and treating accidentally infiltrated water, making it difficult to stably and long-term waterproof the internal detection area safely, and the waterproof stability is not ideal. 2. In the way that two bolts and four screws on both sides are operated and fixed respectively, the operation is cumbersome, and special tools are required for individual operations, and the fixing efficiency and convenience are not ideal. In view of this, the present application proposes an insulation protection device for cable partial discharge monitoring to solve the above existing problems. Summary of the Invention

[0006] Based on the technical problems existing in the background art, the present invention proposes an insulation protection device for cable partial discharge monitoring.

[0007] To achieve the above object, the present invention provides the following technical solution: An insulation protection device for cable partial discharge monitoring, including an insulation protection device body, and the insulation protection device body includes:

[0008] An insulation protection sleeve, on the top of which there are two symmetrically arranged wire clamping shells, and the bottom of the lower wire clamping shell is fixedly connected and communicated with the top end of the protection sleeve;

[0009] A butt-jointed multi-region buffer and partition type sealing wire clamping assembly, which is installed in the two wire clamping shells; the butt-jointed multi-region buffer and partition type sealing wire clamping assembly is used to divide the two wire clamping shells into multiple sealed regions and seal and clamp the wires, and the multiple regions on both sides form a multi-layer partition buffer and waterproof for the middle region;

[0010] A butt-jointed buckle sealing assembly, which is installed on the outer sides of the two wire clamping shells; the butt-jointed buckle sealing assembly is used to perform butt-jointed sealing and waterproof work on the outer sides when the two wire clamping shells are butted;

[0011] A lifting plate, which is arranged below the lower wire clamping shell;

[0012] A tensioning and anti-loosening threaded driving assembly, which is installed between the lifting plate and the lower wire clamping shell; the tensioning and anti-loosening threaded driving assembly is used to drive the lifting plate to move up and down, and is used to press and elastically tension the lifting plate when driving the lifting plate to move down;

[0013] A vertical guiding assembly, which is four groups and is fixedly connected in a rectangular shape at the bottom of the lower wire clamping shell, and the lifting plate is fixedly sleeved on the four groups of vertical guiding assemblies; the vertical guiding assembly is used to vertically guide the lifting plate;

[0014] An inserting and anti-detaching pulling and pressing locking assembly, which is two groups and is respectively fixedly connected to the two sides of the top of the lifting plate, and the inserting and anti-detaching pulling and pressing locking assembly is in movable contact with the top of the upper wire clamping shell; the inserting and anti-detaching pulling and pressing locking assembly is used to press and lock the upper wire clamping shell downward when the lifting plate moves down;

[0015] One-way valves, four groups of which are connected and fixed to the bottom of the wire clamping shell below, and the bottom of the one-way valve is the outlet.

[0016] Preferably, the docking type multi-region buffer partitioned sealing wire clamping assembly includes four semi-circular wire pipes. On both sides of the two wire clamping shells close to each other, they are respectively sleeved and fixed on the corresponding semi-circular wire pipes. On the inner walls of the two sides of the two wire clamping shells repelling each other, four partitions are fixedly connected. On the sides close to each other of the two upper and lower opposite partitions, semi-circular sleeves are embedded and fixed. On the inner sides of the semi-circular sleeves and the inner sides of the semi-circular wire pipes, semi-circular elastic sealing rings are adhesively fixed. On the sides close to each other of the two upper and lower opposite semi-circular elastic sealing rings, they are tightly squeezed and contacted to form a complete circular sealing ring;

[0017] The eight partitions divide the two wire clamping shells into five regions. The region in the middle is the detection region a, and the four regions on both sides are buffer water-proof regions b. The tops of the four one-way valves are respectively communicated with the bottoms of the corresponding buffer water-proof regions b.

[0018] Preferably, the docking buckle sealing assembly includes two buckle sleeves and two insertion strips. On the sides close to each other of the two buckle sleeves, they are respectively fixedly connected to the front and rear sides of the upper wire clamping shell and the front and rear sides of the upper semi-circular wire pipe. On the sides close to each other of the two insertion strips, they are respectively fixedly connected to the front and rear sides of the lower wire clamping shell and the front and rear sides of the lower semi-circular wire pipe. Sealing rubber sheets are adhesively fixed inside the buckle sleeves, and the insertion strips are adapted to the inner sides of the corresponding sealing rubber sheets and are snapped into the sealing rubber sheets.

[0019] Preferably, the tensioning and anti-loosening threaded drive assembly includes an external threaded sleeve fixedly connected to the bottom of the lower wire clamping shell. An internal threaded sleeve is sleeved on the outside of the external threaded sleeve. At the bottom outside of the internal threaded sleeve, a plurality of handle rods are fixedly connected at equal intervals in a ring shape and are all located below the lifting plate. At the top outside of the internal threaded sleeve, a lifting ring is rotatably sleeved. Between the bottom of the lifting ring and the top of the lifting plate, a telescopic protective rubber sleeve is fixedly connected. At the top of the lifting plate, a plurality of T-shaped guide rods are fixedly connected at equal intervals in a ring shape and are all located inside the telescopic protective rubber sleeve. The lifting ring is slidably sleeved on the plurality of T-shaped guide rods. Between the bottom of the lifting ring and the top of the lifting plate, a plurality of springs are fixedly connected at equal intervals in a ring shape, and the springs are movably sleeved on the corresponding T-shaped guide rods.

[0020] Preferably, the vertical guide assembly includes vertical guide rods fixedly connected to the bottom of the lower wire clamping shell. Vertical guide pipes are slidably sleeved on the four vertical guide rods, and the lifting plate is fixedly sleeved on the four vertical guide pipes.

[0021] Preferably, the interpenetrating anti - detachment tension - compression locking assembly includes two connecting rods. The two sides of the top of the lifting plate are respectively fixedly connected to the bottom ends of the corresponding two connecting rods. The wire clamping shell is located between the two relatively front - and - rear connecting rods. The top ends of the connecting rods are fixedly connected with pull rings. The same pressure rod is movably inserted through the upper parts of the inner sides of the two relatively front - and - rear pull rings. A rubber sleeve that is adhesively sleeved on the outer side of the pressure rod is in movable contact with the top of the upper wire clamping shell. A clamping block is fixedly connected to the inner wall of the top of the pull ring, and the pressure rod is movably clamped on the corresponding two clamping blocks.

[0022] Preferably, a sealing bearing is fixedly sleeved inside the lifting ring, and the inner ring of the sealing bearing is fixedly connected to the outer side of the internal - thread sleeve.

[0023] Preferably, clamping grooves are formed on both the front side and the rear side of the top of the pressure rod, and the clamping grooves are movably sleeved on the outer sides of the corresponding clamping blocks.

[0024] Preferably, the insulating protective sleeve is located inside the external - thread sleeve and is not in contact with the inner side of the external - thread sleeve.

[0025] Preferably, a circular movable through - hole is formed on the top of the lifting plate, and the internal - thread sleeve is located inside the circular movable through - hole and is not in contact with the inner side of the circular movable through - hole.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. For this insulation protection device for cable partial discharge monitoring, through the cooperation of the wire clamping shell, the butt - joint multi - area buffer - separated sealing wire clamping assembly and the butt - joint buckle - sealing assembly, six - point clamping and sealing of the wire and outer buckle - sealing waterproofing can be achieved synchronously when the two wire clamping shells are butted.

[0028] 2. For this insulation protection device for cable partial discharge monitoring, through the cooperation of the butt - joint multi - area buffer - separated sealing wire clamping assembly and the wire clamping shell, the detection area a inside can also be divided into multiple buffer and water - isolating areas b on both sides, which is convenient for multi - layer buffer separation and drainage treatment of water when water accidentally seeps in from both sides, achieving effective and stable water prevention for the middle detection area a, avoiding the phenomenon that the part of the wire insulation skin penetrated by the external detection piece in the detection area a gets water, and achieving the effect of stable and long - term safety waterproofing for the internal detection area a part, and improving the waterproof stability of the detection position.

[0029] 3. The insulation protection device used for cable partial discharge monitoring, through the coordination of the wire clamping shell, lifting plate, tightening and anti-loosening type threaded drive assembly, vertical guide assembly, and inserted anti-slip tension and compression locking assembly, can be operated by single-position rotation to directly compress and lock the wire clamping shell at two points and always elastically tighten the threaded bite part to prevent vibration and loosening. There is no need to operate separately at multiple points, and the operation is simple and no special tools are required, which improves the fixing efficiency and convenience. There is no need to insert from the inside of the wire clamping shell, which reduces the risk of rainwater infiltration from the top, and the method of tightening and biting the bottom to prevent vibration and loosening is used to improve the long-term stability.

[0030] The present invention is provided with a series of structures, which is convenient for synchronously realizing six-point clamping sealing and outer buckle sealing and waterproofing of the wires when the two wire clamping shells are connected, and can separate multiple areas to block water and drain water when water accidentally enters the two sides, so as to achieve a stable and long-term safe waterproof effect on the internal detection area a, improve the waterproof stability of the detection position, and facilitate single-position rotation operation to directly press and lock the two points of the wire clamping shell as a whole and always elastically tighten the threaded bite part to prevent vibration and loosening, without the need to divide multiple points and use special tools for separate operation, the operation is simple, and the fixing efficiency and convenience are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of an insulation protection device for cable partial discharge monitoring proposed by the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above;

[0033] Figure 3 This is a schematic diagram of the main cross-sectional structure of the insulation protection device for cable partial discharge monitoring proposed by the present invention;

[0034] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0035] Figure 5 It is a side view structural schematic diagram of a wire clamping shell, a butt-jointed multi-region buffer separation type sealing wire clamping assembly and a butt-jointed buckle sealing assembly connector of an insulation protection device for cable partial discharge monitoring proposed by the present invention;

[0036] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure.

[0037] In the figure: 1. Protective sleeve; 2. Wire clamping shell; 201. Semi-circular wire threading pipe; 202. Partition board; 203. Semi-circular sleeve; 204. Semi-circular elastic sealing ring; 205. Buckling envelope; 2051. Insertion strip; 2052. Sealing rubber sheet; a. Detection area; b. Buffer and water isolation area; 3. Check valve; 4. External thread sleeve; 401. Internal thread sleeve; 402. Handle rod; 403. Lifting ring; 404. T-shaped guide rod; 405. Spring; 406. Telescopic protective rubber sleeve; 5. Lifting plate; 501. Vertical guide rod; 502. Vertical conduit; 6. Connecting rod; 601. Pulling ring; 602. Block; 603. Pressing rod; 604. Card slot. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0039] As Figures 1 to 6 shown, the insulation protection device for cable partial discharge monitoring proposed in this embodiment includes an insulation protection device body, and the insulation protection device body includes:

[0040] An insulation protection sleeve 1, with two symmetrically arranged wire clamping shells 2 provided at the top thereof, and the bottom of the lower wire clamping shell 2 is fixedly connected and communicated with the top end of the protection sleeve 1;

[0041] A butt-jointed multi-region buffer and partitioned sealing wire clamping assembly, installed in the two wire clamping shells 2; the butt-jointed multi-region buffer and partitioned sealing wire clamping assembly is used to partition the two wire clamping shells 2 into multiple sealed regions and seal and clamp the wire, and the multiple regions on both sides form multi-layer partition buffering and waterproofing for the middle region;

[0042] A butt-jointed buckling sealing assembly, installed outside the two wire clamping shells 2; the butt-jointed buckling sealing assembly is used to perform buckling and sealing waterproof work on the outside when the two wire clamping shells 2 are butted;

[0043] A lifting plate 5, arranged below the lower wire clamping shell 2;

[0044] A tensioning and anti-loosening threaded driving assembly, installed between the lifting plate 5 and the lower wire clamping shell 2; the tensioning and anti-loosening threaded driving assembly is used to drive the lifting plate 5 to move up and down, and is used to press and elastically tension it when driving the lifting plate 5 to move down;

[0045] A vertical guiding assembly, which is four groups and is fixedly connected in a rectangular shape at the bottom of the lower wire clamping shell 2, and the lifting plate 5 is fixedly sleeved on the four groups of vertical guiding assemblies; the vertical guiding assembly is used to vertically guide the lifting plate 5;

[0046] The interspersed anti-loosening tension and compression locking assembly, there are two groups of which are respectively fixedly connected to the two sides of the top of the lifting plate 5, and the interspersed anti-loosening tension and compression locking assembly is in movable contact with the top of the upper wire clamping shell 2; the interspersed anti-loosening tension and compression locking assembly is used to tightly press and lock the upper wire clamping shell 2 downward when the lifting plate 5 moves downward;

[0047] The one-way valve 3, there are four groups of which are connected and fixed to the bottom of the lower wire clamping shell 2, and the bottom of the one-way valve 3 is the outlet.

[0048] Specifically, the butt joint type multi-region buffer and partition type sealed wire clamping assembly includes four semi-circular wire pipes 201. The two sides of the adjacent sides of the two wire clamping shells 2 are respectively sleeved and fixed on the corresponding semi-circular wire pipes 201. Four partitions 202 are fixedly connected to the inner walls of the two mutually repulsive sides of the two wire clamping shells 2. Semi-circular sleeves 203 are embedded and fixed on the adjacent sides of the two relatively upper and lower partitions 202. Semi-circular elastic sealing rings 204 are adhesively fixed to the inner sides of the semi-circular sleeves 203 and the inner sides of the semi-circular wire pipes 201. The adjacent sides of the two relatively upper and lower semi-circular elastic sealing rings 204 are tightly in contact and form a complete circular sealing ring;

[0049] The eight partitions 202 divide the inside of the two wire clamping shells 2 into five regions. The region in the middle is the detection region a, and the four regions on both sides are buffer and water isolation regions b. The tops of the four one-way valves 3 are respectively communicated with the bottoms of the corresponding buffer and water isolation regions b; the arranged semi-circular wire pipes 201, partitions 202, semi-circular sleeves 203, semi-circular elastic sealing rings 204, detection region a and buffer and water isolation region b cooperate. When the upper wire clamping shell 2 moves downward, it drives the upper semi-circular wire pipes 201, partitions 202, semi-circular sleeves 203 and semi-circular elastic sealing rings 204 to be butted with the lower semi-circular wire pipes 201, partitions 202, semi-circular sleeves 203 and semi-circular elastic sealing rings 204. The wires are sealed and clamped by the butt joint of multiple upper and lower semi-circular elastic sealing rings 204. The inside of the two wire clamping shells 2 is divided into a detection region a and four buffer and water isolation regions b by multiple partitions 202. The buffer and water isolation regions b on both sides play a role of multi-layer partition and buffer waterproofing for the middle detection region a when water enters accidentally. The water that accidentally seeps into the buffer and water isolation regions b on the side is directly discharged through the corresponding one-way valves 3, realizing the effective and stable water prevention effect on the middle detection region a, and avoiding the phenomenon that the part of the wire insulation skin penetrated by the external detection piece in the detection region a gets water.

[0050] Further, the docking buckle sealing assembly includes two buckle sleeves 205 and two insertion strips 2051. The adjacent sides of the two buckle sleeves 205 are respectively fixedly connected to the front and rear sides of the upper wire clamping shell 2 and the front and rear sides of the upper semi-circular wire pipe 201. The adjacent sides of the two insertion strips 2051 are respectively fixedly connected to the front and rear sides of the lower wire clamping shell 2 and the front and rear sides of the lower semi-circular wire pipe 201. A sealing rubber sheet 2052 is adhesively fixed inside the buckle sleeve 205. The insertion strip 2051 is adapted to the inner side of the corresponding sealing rubber sheet 2052 and is clamped into the sealing rubber sheet 2052. The arranged buckle sleeve 205, insertion strip 2051 and sealing rubber sheet 2052 cooperate. When the upper wire clamping shell 2 moves downward, it drives the buckle sleeve 205 to move downward. When the buckle sleeve 205 moves downward, it drives the corresponding sealing rubber sheet 2052 to downwardly buckle on the outer side of the corresponding insertion strip 2051, achieving the effect of buckling and sealing the outside of the docking part of the two wire clamping shells 2 to prevent water ingress.

[0051] Further, the tensioning and anti-loosening threaded drive assembly includes an external threaded sleeve 4 fixedly connected to the bottom of the wire clamping shell 2 below. The insulating protective sleeve 1 is located inside the external threaded sleeve 4 and does not contact the inner side of the external threaded sleeve 4. An internal threaded sleeve 401 is threadedly sleeved on the outside of the external threaded sleeve 4. A plurality of handle rods 402, all located below the lifting plate 5, are fixedly connected to the outer bottom of the internal threaded sleeve 401 at equal intervals in a circular shape. A circular movable perforation is formed at the top of the lifting plate 5. The internal threaded sleeve 401 is located inside the circular movable perforation and does not contact the inner side of the circular movable perforation, achieving the effect of allowing the internal threaded sleeve 401 to pass through movably. An lifting ring 403 is rotatably sleeved on the outer top of the internal threaded sleeve 401. A sealing bearing is fixedly sleeved inside the lifting ring 403, and the inner ring of the sealing bearing is fixedly connected to the outer side of the internal threaded sleeve 401, achieving the effect of rotatably mounting the internal threaded sleeve 401. A telescopic protective rubber sleeve 406 is fixedly connected between the bottom of the lifting ring 403 and the top of the lifting plate 5. A plurality of T-shaped guide rods 404, all located inside the telescopic protective rubber sleeve 406, are fixedly connected to the top of the lifting plate 5 at equal intervals in a circular shape. The lifting ring 403 is slidably sleeved on the plurality of T-shaped guide rods 404. A plurality of springs 405 are fixedly connected between the bottom of the lifting ring 403 and the top of the lifting plate 5 at equal intervals in a circular shape. The springs 405 are movably sleeved on the corresponding T-shaped guide rods 404. The cooperation of the external threaded sleeve 4, internal threaded sleeve 401, lifting plate 5, lifting ring 403, telescopic protective rubber sleeve 406, T-shaped guide rods 404 and springs 405 is such that when the handle rods 402 are pulled to drive the internal threaded sleeve 401 to rotate, the internal threaded sleeve 401 rotates and moves downward or moves back upward on the external threaded sleeve 4. The internal threaded sleeve 401 drives the lifting ring 403 to move downward or move back upward. The lifting ring 403 drives the lifting plate 5 to move downward or move back upward through the plurality of springs 405. When the lifting ring 403 drives the lifting plate 5 to move downward until it can no longer move downward, at this time, the continuously downward moving lifting ring 403 slides downward on the plurality of T-shaped guide rods 404 and compresses the plurality of springs 405 and the telescopic protective rubber sleeve 406 until the plurality of springs 405 are gradually compressed to the maximum state, that is, the springs 405 are compressed to the state where their multiple turns are tightly squeezed together, that is, it is transformed into a hard state to tightly press the lifting plate 5 downward. The function of the springs 405 is not to perform the pressing and fixing work by using elasticity, but to compress them to the maximum state to form a fixed structural member to press and fix the lifting plate 5. The elastic force existing after the springs 405 are compressed is used to always apply an upward tensioning elastic force to the internal threaded sleeve 401 through the lifting ring 403. By using this always-existing tensioning force, the threads of the internal threaded sleeve 401 and the external threaded sleeve 4 are always in a tightly biting state. By using this always-thread-tightening and biting state, the phenomenon of loosening and displacement of the thread biting points due to subsequent vibrations and other factors is avoided. Therefore, for pressing and fixing, it is in a fixed pressing and fixing state.

[0052] Further, the vertical guiding assembly includes a vertical guiding rod 501 fixedly connected to the bottom of the wire clamping shell 2 below. A vertical guiding tube 502 is slidably sleeved on each of the four vertical guiding rods 501. The lifting plate 5 is fixedly sleeved on the four vertical guiding tubes 502. The arranged vertical guiding rod 501 and vertical guiding tube 502 cooperate. When the lifting plate 5 moves up and down, it will drive the four vertical guiding tubes 502 to slide vertically on the corresponding vertical guiding rods 501 respectively. By the way that the vertical guiding tubes 502 are vertically guided and restricted by the vertical guiding rods 501, the vertical guiding work of the lifting plate 5 is realized.

[0053] Further, the inserted anti - detachment tension - compression locking assembly includes two connecting rods 6. The two sides of the top of the lifting plate 5 are respectively fixedly connected to the bottom ends of the corresponding two connecting rods 6. The wire clamping shell 2 is located between the two front - and - rear - opposite connecting rods 6. A pull ring 601 is fixedly connected to the top end of the connecting rod 6. The same pressure rod 603 is movably inserted through the upper parts of the inner sides of the two front - and - rear - opposite pull rings 601. A rubber sleeve that is in movable contact with the top of the upper wire clamping shell 2 is adhesively sleeved on the outer side of the pressure rod 603. A clamping block 602 is fixedly connected to the inner wall of the top of the pull ring 601. The pressure rod 603 is movably clamped on the corresponding two clamping blocks 602. Slots 604 are opened on the front side and the rear side of the top of the pressure rod 603. The slots 604 are movably sleeved on the outer sides of the corresponding clamping blocks 602. The arranged connecting rods 6, wire clamping shell 2, pull rings 601, clamping blocks 602, pressure rod 603 and rubber sleeve cooperate. Before assembly, the pressure rod 603 is in a separated state from the corresponding two pull rings 601, and the position of the pull ring 601 is in a higher state. After the two wire clamping shells 2 are butted, the two pressure rods 603 are respectively inserted into the corresponding two front - and - rear - opposite pull rings 601 and are sleeved on the corresponding two clamping blocks 602. Then, the lifting plate 5 is driven to move downward. When the lifting plate 5 moves downward, the four pull rings 601 are driven to move downward through the four connecting rods 6. The four pull rings 601 drive the two pressure rods 603 to move downward. The two pressure rods 603 press and lock the upper wire clamping shell 2 downward. Among them, the clamping method of the pressure rod 603 with the clamping block 602 through the slot 604 plays an effect of positioning the clamping of the pressure rod 603, preventing the risk of accidental detachment of the pressure rod 603 from the front and rear sides due to factors such as vibration during pressing, and ensuring the stability of the fixation.

[0054] When the insulation protection device for cable partial discharge monitoring is in use, before assembly, the pressure rod 603 and the corresponding two pull rings 601 are in a separated state, and the position of the pull ring 601 is in a higher state. First, press the wire forcefully and clamp it in the semi-circular elastic sealing ring 204 inside the lower semi-circular wire pipe 201 and the semi-circular sleeve 203. Then, press the upper wire clamping shell 2 downward to dock it with the lower wire clamping shell 2. When the upper wire clamping shell 2 moves downward, it drives the semi-circular elastic sealing ring 204 inside the upper semi-circular wire pipe 201 and the semi-circular sleeve 203 to clamp tightly on the outside of the wire. By using the method of pairwise upper and lower docking and clamping sealing of a total of twelve semi-circular elastic sealing rings 204, the effect of six-point synchronous clamping and sealing of the wire is achieved; when the upper wire clamping shell 2 moves downward, it also drives two buckling sleeves 205 to move downward. When the buckling sleeves 205 move downward, they drive the corresponding sealing rubber sheets 2052 to buckle downward on the outside of the corresponding plugging strips 2051, achieving the effect of buckling and sealing the outside of the docking part of the two wire clamping shells 2 to prevent water ingress;

[0055] After the docking is completed, insert the two pressure rods 603 into the two corresponding front and rear opposite pull rings 601 respectively, and fit the two clamping grooves 604 on them onto the corresponding two clamping blocks 602. Then, pull the handle rod 402 forward to drive the internal thread sleeve 401 forward. The internal thread sleeve 401 rotates and moves downward on the external thread sleeve 4. The internal thread sleeve 401 drives the lifting ring 403 to move downward. The lifting ring 403 drives the lifting plate 5 to move downward through a plurality of springs 405. The lifting plate 5 drives the four vertical guide pipes 502 to slide downward on the corresponding vertical guide rods 501 respectively. When the lifting plate 5 moves downward, it drives the four pull rings 601 to move downward through the four connecting rods 6. The four pull rings 601 drive the two pressure rods 603 to move downward. The two pressure rods 603 press and fix the upper wire clamping shell 2 downward. When pressing and fixing the upper wire clamping shell 2, the pressure rods 603 are blocked and restricted from moving further downward. Thus, the lifting plate 5 is further restricted from moving downward through the pull rings 601 and the connecting rods 6. At this time, the continuously moving downward lifting ring 403 slides downward on the plurality of T-shaped guide rods 404, and compresses the plurality of springs 405 and the telescopic shielding rubber sleeve 406 until the plurality of springs 405 are gradually compressed to the maximum state, that is, the springs 405 are compressed to the state where their multiple turns are tightly squeezed together, which is transformed into a hard state to press and hold the lifting plate 5 downward. The function of the springs 405 is not to use elasticity for pressing and fixing work, but to compress them to the maximum state to form a fixed structural member to press and hold the lifting plate 5. The elastic force existing after the springs 405 are compressed is used to always have an upward tensioning elastic force on the internal thread sleeve 401 through the lifting ring 403. By using this always-existing tensioning force, the threads of the internal thread sleeve 401 and the external thread sleeve 4 are always in a tightly engaged state. By using this always-thread-tightening and engaging state, the phenomenon of the thread engagement point loosening and displacing due to factors such as vibration in the future is avoided. Therefore, for pressing and fixing, it is in a fixed pressing and fixing state, achieving the effect of directly pressing and locking two points of the wire clamping shell 2 in one position by rotating operation, without the need for separate operations at multiple points, with simple operation, no need for special tools, improving the fixing efficiency and convenience, and without the need to penetrate from the inside of the wire clamping shell 2, reducing the risk of rainwater seeping in from the upper part, and using the lower part for tensioning and engaging to prevent loosening due to vibration, improving the long-term use stability;

[0056] In addition, by using a plurality of partition plates 202, semi-circular sleeves 203 and a plurality of semi-circular elastic sealing rings 204 on the inner side, the effect of dividing the two wire clamping shells 2 into multiple regions is also achieved. Among them, the middle is the detection region a, and the two sides are provided with four buffer water-proof regions b. By using this multi-region shielding method, when water accidentally seeps into the buffer water-proof regions b on both sides, it can play a role of multi-layer partition buffering and waterproofing for the middle detection region a. The water that accidentally seeps into the buffer water-proof regions b on the side is directly discharged through the corresponding one-way valves 3. Through the method of multi-layer buffering, partitioning and draining the water that accidentally seeps into both sides by multiple regions on both sides, the effective and stable water-proofing of the middle detection region a is realized, avoiding the phenomenon that the part of the wire insulation skin penetrated by the external detection piece in the detection region a gets water, and realizing the effect of stable and long-term safety waterproofing for the internal detection region a part, thus improving the waterproof stability of the detection position.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An insulation protection device for cable partial discharge monitoring, comprising an insulation protection device body, and the insulation protection device body includes an insulation protection sleeve (1), characterized in that: Comprising: An insulating protective sleeve (1), with two symmetrically arranged wire clamping shells (2) provided at its top, and the bottom of the lower wire clamping shell (2) is fixedly connected and communicated with the top end of the protective sleeve (1); A butt-jointed multi-region buffer and partitioned sealing wire clamping assembly, installed in the two wire clamping shells (2); A butt-joint buckling and sealing assembly, installed on the outer sides of the two wire clamping shells (2); A lifting plate (5), arranged below the lower wire clamping shell (2); A tensioning and anti-loosening threaded driving assembly, installed between the lifting plate (5) and the lower wire clamping shell (2); A vertical guiding assembly, which is in four groups and is fixedly connected in a rectangular shape at the bottom of the lower wire clamping shell (2), and the lifting plate (5) is fixedly sleeved on the four groups of vertical guiding assemblies; An inserting and anti-detaching tension and compression locking assembly, which is in two groups and is respectively fixedly connected to the two sides of the top of the lifting plate (5), and the inserting and anti-detaching tension and compression locking assembly is in active contact with the top of the upper wire clamping shell (2); One-way valves (3), which are in four groups and are fixedly connected and communicated at the bottom of the lower wire clamping shell (2), and the bottom of the one-way valve (3) is the outlet.

2. The insulation protection device for cable partial discharge monitoring according to claim 1, characterized in that: The butt-jointed multi-region buffer and partitioned sealing wire clamping assembly includes four semi-circular wire pipes (201). The two sides of the two wire clamping shells (2) close to each other are respectively sleeved and fixed on the corresponding semi-circular wire pipes (201). Four partition plates (202) are fixedly connected to the inner walls of the two sides of the two wire clamping shells (2) that repel each other. Semi-circular sleeves (203) are embedded and fixed on the sides of the two partition plates (202) that are opposite to each other up and down. Semi-circular elastic sealing rings (204) are adhesively fixed to the inner sides of the semi-circular sleeves (203) and the inner sides of the semi-circular wire pipes (201). The sides of the two semi-circular elastic sealing rings (204) that are opposite to each other up and down are tightly squeezed and contacted to form a complete circular sealing ring; The eight partition plates (202) divide the inside of the two wire clamping shells (2) into five regions. The region in the middle is the detection region (a), and the four regions on both sides are buffer and water-isolating regions (b). The tops of the four one-way valves (3) are respectively communicated with the bottoms of the corresponding buffer and water-isolating regions (b).

3. The insulation protection device for cable partial discharge monitoring according to claim 2, characterized in that: The butt-joint buckling and sealing assembly includes two buckling sleeves (205) and two inserting strips (2051). The sides of the two buckling sleeves (205) close to each other are respectively fixedly connected to the front and rear sides of the upper wire clamping shell (2) and the front and rear sides of the upper semi-circular wire pipe (201). The sides of the two inserting strips (2051) close to each other are respectively fixedly connected to the front and rear sides of the lower wire clamping shell (2) and the front and rear sides of the lower semi-circular wire pipe (201). A sealing rubber sheet (2052) is adhesively fixed in the buckling sleeve (205). The inserting strip (2051) is adapted to the inner side of the corresponding sealing rubber sheet (2052) and is snapped into the sealing rubber sheet (2052).

4. The insulation protection device for cable partial discharge monitoring according to claim 1, characterized in that: The tension-preventing and loosening-proof threaded driving assembly includes an external thread sleeve (4) fixedly connected to the bottom of the thread clamping shell (2) below. An internal thread sleeve (401) is threadedly sleeved on the outside of the external thread sleeve (4). A plurality of handle rods (402) are fixedly connected to the outer bottom of the internal thread sleeve (401) at equal intervals in a ring shape, and all of them are located below the lifting plate (5). An lifting ring (403) is rotatably sleeved on the outer top of the internal thread sleeve (401). A telescopic protective rubber sleeve (406) is fixedly connected between the bottom of the lifting ring (403) and the top of the lifting plate (5). A plurality of T-shaped guide rods (404) are fixedly connected to the top of the lifting plate (5) at equal intervals in a ring shape, and all of them are located inside the telescopic protective rubber sleeve (406). The lifting ring (403) is slidably sleeved on the plurality of T-shaped guide rods (404). A plurality of springs (405) are fixedly connected between the bottom of the lifting ring (403) and the top of the lifting plate (5) at equal intervals in a ring shape. The springs (405) are movably sleeved on the corresponding T-shaped guide rods (404).

5. The insulation protection device for cable partial discharge monitoring according to claim 1, characterized in that: The vertical guide assembly includes a vertical guide rod (501) fixedly connected to the bottom of the thread clamping shell (2) below. Vertical guide tubes (502) are slidably sleeved on the four vertical guide rods (501). The lifting plate (5) is fixedly sleeved on the four vertical guide tubes (502).

6. The insulation protection device for cable partial discharge monitoring according to claim 1, characterized in that: The inserted-preventing and pulling-compressing locking assembly includes two connecting rods (6). The two bottom ends of the connecting rods (6) are respectively fixedly connected to the two sides of the top of the lifting plate (5). The thread clamping shell (2) is located between the two relatively front and rear connecting rods (6). A pulling ring (601) is fixedly connected to the top end of the connecting rod (6). The same pressing rod (603) is movably inserted through the upper parts of the inner sides of the two relatively front and rear pulling rings (601). A rubber sleeve that is in movable contact with the top of the upper thread clamping shell (2) is adhesively sleeved on the outside of the pressing rod (603). A clamping block (602) is fixedly connected to the inner wall of the top of the pulling ring (601). The pressing rod (603) is movably clamped on the corresponding two clamping blocks (602).

7. The insulation protection device for cable partial discharge monitoring according to claim 4, characterized in that: A sealing bearing is fixedly sleeved inside the lifting ring (403), and the inner ring of the sealing bearing is fixedly connected to the outside of the internal thread sleeve (401).

8. The insulation protection device for cable partial discharge monitoring according to claim 6, characterized in that: Slots (604) are formed in both the front side and the rear side of the top of the pressing rod (603), and the slots (604) are movably sleeved on the outside of the corresponding clamping blocks (602).

9. The insulation protection device for cable partial discharge monitoring according to claim 4, characterized in that: The insulating protective sleeve (1) is located inside the external thread sleeve (4) and is not in contact with the inner side of the external thread sleeve (4).

10. The insulation protection device for cable partial discharge monitoring according to claim 4, characterized in that: A circular movable through hole is formed in the top of the lifting plate (5), and the internal thread sleeve (401) is located inside the circular movable through hole and is not in contact with the inner side of the circular movable through hole.

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