Mountain photovoltaic optical cable cold shrinkage sealing head

Abstract

The invention relates to a mountain photovoltaic optical cable cold shrinkage sealing head, and belongs to the technical field of photovoltaic optical cable end construction, the mountain photovoltaic optical cable cold shrinkage sealing head comprises a ring sleeve, two ends of the ring sleeve are provided with elastic cold shrinkage cylinders, first support strips are detachably arranged in the elastic cold shrinkage cylinders, and the circumferential surface of the ring sleeve is provided with at least one group of longitudinal cutting grooves along the bus direction; the circumferential surface of the ring sleeve is provided with at least one group of transverse cutting grooves along the circumferential direction of the ring sleeve, the longitudinal cutting grooves and the transverse cutting grooves are arranged in a staggered manner, one end, far away from the end part of the photovoltaic optical cable, of each longitudinal cutting groove and two ends of each transverse cutting groove are located on the same ring line of the circumferential surface of the ring sleeve, and a longitudinal cutter is installed in each longitudinal cutting groove. The longitudinal cutter is connected with a longitudinal limiting block set, a transverse cutter is installed in the transverse cutting groove, and the transverse cutter is connected with a transverse limiting block set. The cutting efficiency of different material layers of the photovoltaic cable is improved, and meanwhile, the cutting uniformity of the material layers is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic cable end construction, and in particular to a mountain photovoltaic cable cold shrink sealing head. Background Art

[0002] As the global energy structure transforms toward green and low-carbon, solar photovoltaic power generation systems have been widely used. Especially in mountainous areas with complex terrain, in order to ensure the safety and stability of power transmission, the sealing of photovoltaic cable joints has become an important link. Since photovoltaic cables are composed of multi-layer components, the existing cold shrink method is used to seal photovoltaic cable joints. It is necessary to cut different layers of photovoltaic cables to different lengths, and then put on cold shrink sealing sleeves for sealing. However, in the process of cutting optical cables, it is usually cut by hand with a utility knife. This cutting method is not only inefficient, but also has uneven cutting. If the cutting is too deep, it may damage the next layer of material, especially the copper shielding layer, optical fiber or conductor of the optical cable, affecting the electrical performance or optical fiber transmission quality. If the cutting is not thorough enough, it will cause material residue, hinder subsequent construction, and increase extra workload. Summary of the invention

[0003] In order to improve the cutting efficiency of different material layers of photovoltaic cables and improve the uniformity of cutting the material layers, the present application provides a mountain photovoltaic cable cold shrink sealing head.

[0004] The cold shrink sealing head for mountain photovoltaic cables provided in this application adopts the following technical solution: A mountain photovoltaic cable cold shrink sealing head comprises a ring sleeve, both ends of the ring sleeve are provided with elastic cold shrink cylinders, a first support strip is detachably provided in the elastic cold shrink cylinder, at least one group of longitudinal grooves is provided on the circumferential surface of the ring sleeve along its generatrix direction, each group of the longitudinal grooves is arranged oppositely, at least one group of transverse grooves is provided on the circumferential surface of the ring sleeve along its circumference, the longitudinal grooves and the transverse grooves are staggered, one end of the longitudinal groove away from the end of the photovoltaic cable and both ends of the transverse groove are located on the same ring line of the circumferential surface of the ring groove, a longitudinal cutter is installed in the longitudinal groove, the longitudinal cutter is connected to a longitudinal limit block group, a transverse cutter is installed in the transverse groove, the transverse cutter is connected to a transverse limit block group; when the longitudinal limit block group is clamped at the corresponding position of the longitudinal groove clamping, the longitudinal cutter extends a corresponding feed amount, and when the transverse limit block group is clamped at the corresponding position of the transverse groove clamping, the transverse cutter extends a corresponding feed amount.

[0005] By adopting the above technical solution, when cutting the photovoltaic cable, according to the part to be cut, first adjust the longitudinal limit block group and install the longitudinal cutter, then insert the longitudinal limit block group and the longitudinal cutter into the longitudinal cutting groove together, so that the longitudinal cutter extends a corresponding feed amount to facilitate accurate cutting of the part of the photovoltaic cable to be removed along the longitudinal direction of the photovoltaic cable; The ring sleeve is inserted into the photovoltaic cable and pushed so that the longitudinal cutter cuts the corresponding layer of the photovoltaic cable. After the ring sleeve is pushed to the corresponding position, the transverse limit block group is adjusted and the transverse cutter is installed. Then the transverse limit block and the transverse cutter are inserted into the transverse cutting groove together. The transverse limit block group is pressed tightly by hand and the ring sleeve is rotated so that the transverse cutter extends a corresponding feed amount to facilitate accurate cutting of the part of the photovoltaic cable that needs to be removed along the circumference of the photovoltaic cable. After the circumferential cutting of the photovoltaic cable is completed, the cut part of the photovoltaic cable is pulled out, and then the longitudinal limit block group, the longitudinal cutter, the transverse limit block group and the transverse cutter are taken out, and then the first support bars at both ends of the ring sleeve are pulled out so that the elastic cold shrink cylinder can be contracted and fastened to the photovoltaic cable, which not only improves the cutting efficiency of different material layers of the photovoltaic cable, but also improves the uniformity of the cutting of the material layer. The elastic cold shrink cylinder has high sealing and waterproof properties, and does not require secondary waterproofing treatment, thereby providing construction efficiency for the end treatment of the photovoltaic cable.

[0006] Optionally, the longitudinal limit block group includes a first longitudinal limit block, and the transverse limit block group includes a first transverse limit block, and the first longitudinal limit block is just inserted into the longitudinal cutting groove. When the first transverse limit block is just inserted into the transverse cutting groove, the longitudinal cutter and the transverse cutter just reach the feeding depth of cutting off the outer sheath of the photovoltaic optical cable.

[0007] By adopting the above technical solution, the first transverse limit block is installed on the transverse cutter, and the first longitudinal limit block is installed on the longitudinal cutter. The first transverse limit block is clamped with the transverse cutting groove. When the first longitudinal limit block is clamped with the longitudinal cutting groove, the longitudinal cutter and the transverse cutter can just cut off the outer sheath of the photovoltaic cable without scratching the inner sheath of the photovoltaic cable, thereby improving the accuracy of cutting the material layer of the photovoltaic cable.

[0008] Optionally, the longitudinal limit block group includes a second longitudinal limit block, and the transverse limit block group includes a second transverse limit block, and the second longitudinal limit block is just inserted into the longitudinal cutting groove. When the second transverse limit block is just inserted into the transverse cutting groove, the longitudinal cutter and the transverse cutter just reach the feeding depth of cutting off the inner sheath of the photovoltaic optical cable.

[0009] By adopting the above technical solution, the second transverse limit block is installed on the transverse cutter, and the second longitudinal limit block is installed on the longitudinal cutter. The second transverse limit block is clamped with the transverse cutting groove. When the second longitudinal limit block is clamped with the longitudinal cutting groove, the longitudinal cutter and the transverse cutter can just cut off the inner sheath of the photovoltaic cable without scratching the copper shielding layer of the photovoltaic cable, thereby improving the accuracy of cutting the material layer of the photovoltaic cable.

[0010] Optionally, the longitudinal limit block group includes a third longitudinal limit block, and the transverse limit block group includes a third transverse limit block, and the third longitudinal limit block is just inserted into the longitudinal cutting groove. When the third transverse limit block is just inserted into the transverse cutting groove, the longitudinal cutter and the transverse cutter just reach the feeding depth of cutting off the semi-conductive layer of the photovoltaic cable.

[0011] By adopting the above technical solution, the third transverse limit block is installed on the transverse cutter, and the third longitudinal limit block is installed on the longitudinal cutter. The third transverse limit block is clamped with the transverse cutting groove. When the third longitudinal limit block is clamped with the longitudinal cutting groove, the longitudinal cutter and the transverse cutter can just cut off the semi-conductive layer of the photovoltaic cable without scratching the insulating layer of the photovoltaic cable, thereby improving the accuracy of cutting the material layer of the photovoltaic cable.

[0012] Optionally, the bottom of the first longitudinal limit block, the bottom of the second longitudinal limit block and the bottom of the third longitudinal limit block are all provided with longitudinal clamping grooves, the top of the second longitudinal limit block, the top of the third longitudinal limit block and the top of the longitudinal cutter are all provided with longitudinal clamping blocks, and the longitudinal clamping blocks are tightly matched with the longitudinal clamping grooves; The bottom of the first transverse limit block, the bottom of the second transverse limit block and the bottom of the third transverse limit block are all provided with transverse clamping grooves, and the top of the second transverse limit block, the top of the third transverse limit block and the top of the transverse cutter are all provided with transverse clamping blocks, and the transverse clamping blocks and the transverse clamping grooves are tightly fitted.

[0013] By adopting the above technical solution, if the outer sheath of the photovoltaic cable needs to be cut off, it is only necessary to insert the clamping block of the longitudinal cutter into the clamping groove of the first longitudinal limit block, and insert the clamping block of the transverse cutter into the clamping groove of the first transverse limit block; If the inner sheath of the photovoltaic cable is to be cut off, it is only necessary to insert the clamping block of the longitudinal cutter into the clamping groove of the second longitudinal limit block, insert the clamping block of the second longitudinal limit block into the clamping groove of the first longitudinal limit block, insert the clamping block of the transverse cutter into the clamping groove of the second transverse limit block, and insert the clamping block of the second transverse limit block into the clamping groove of the first transverse limit block; If you want to cut off the semi-conductive layer of the photovoltaic cable, you only need to tear off the copper shielding layer first, insert the clamping block of the longitudinal cutter into the clamping groove of the third longitudinal limit block, insert the clamping block of the third longitudinal limit block into the clamping groove of the second longitudinal limit block, insert the clamping block of the second longitudinal limit block into the clamping groove of the first longitudinal limit block, and insert the clamping block of the transverse cutter into the clamping groove of the third transverse limit block, insert the clamping block of the third transverse limit block into the clamping groove of the second transverse limit block, and insert the clamping block of the second transverse limit block into the clamping groove of the first transverse limit block. The feed amount of the longitudinal cutter and the transverse cutter can be adjusted quickly and accurately to accurately cut off the corresponding material layer of the photovoltaic cable.

[0014] Optionally, the ring sleeve is provided with a supporting ring groove along its circumference, a grounding wire is wound in the supporting ring groove, an annular spring is arranged in the supporting ring groove, and the annular spring presses the grounding wire.

[0015] By adopting the above technical solution, it is convenient to accurately position the grounding wire, and the annular spring is used for clamping to reduce the deviation of the grounding wire.

[0016] Optionally, one of the ring sleeves is sleeved on the inner sheath of the photovoltaic cable, and the other ring sleeve is sleeved on the copper shielding layer of the photovoltaic cable. The two ring sleeves are jointly sleeved with a three-finger cold shrink sleeve, and the three-finger cold shrink sleeve includes three finger cold shrink sleeves and a main cold shrink sleeve. Second support bars are provided in the finger cold shrink sleeves and the main cold shrink sleeve. The three cables with exposed copper shielding layers of the photovoltaic cable pass through the three finger cold shrink sleeves respectively, and the main cold shrink sleeve is sleeved on the two ring sleeves of the photovoltaic cable.

[0017] By adopting the above technical scheme, an elastic shrinkable cylinder of one ring sleeve seals the cross section of the outer sheath and the inner sheath, and another elastic shrinkable cylinder of another ring sleeve seals the cross section of the inner sheath and the copper shielding layer. The three finger shrinkable sleeves are tightened and fixed to the semi-conductive layers of the three optical cables, and the main shrinkable sleeve covers the two ring sleeves, thereby enhancing the sealing effect of the photovoltaic optical cable.

[0018] Optionally, the two ring sleeves are wrapped together with a tape layer, and the main shrink sleeve is sleeved on the tape layer.

[0019] By adopting the above technical solution, the tape layer can be wrapped around the ring sleeve, which not only protects the ring sleeve and reduces the corrosion of the ring sleeve, but also provides a flat fixing surface for the main shrink sleeve, thereby strengthening the fixing effect of the main shrink sleeve on the photovoltaic optical cable.

[0020] Optionally, the semi-conductive layer of the photovoltaic cable extending out of the finger shrink sleeve is provided with a PVC tape layer wrapped around it, one of the ring sleeves is sleeved on the exposed insulating layer of the photovoltaic cable, one end of the exposed insulating layer of the photovoltaic cable is sleeved with an umbrella-shaped shrink sleeve, one end of the umbrella-shaped shrink sleeve is sleeved on the PVC tape layer, and the umbrella-shaped shrink sleeve wraps the ring sleeve on the exposed insulating layer of the photovoltaic cable.

[0021] By adopting the above technical solutions, the umbrella-shaped structure increases the path of leakage current, reduces the electric field strength, provides good insulation effect, and prevents current from leaking through external objects. The stacked structure of the umbrella-shaped design helps to drain water and prevent rainwater and moisture from accumulating in the cable connection parts, thereby avoiding cable failures caused by moisture.

[0022] Optionally, a silicone layer is coated on the exposed insulating layer of the photovoltaic cable, and the umbrella-shaped cold shrink sleeve is tightly sleeved on the silicone layer.

[0023] By adopting the above technical solution, silicone is used as a lubricant to reduce the friction during the installation of the cold shrink sleeve, allowing it to slide into place more smoothly and avoid damage to the cable or sleeve due to excessive friction. Silicone has excellent filling and adhesion properties. After application, it can fill the slight unevenness on the cable surface and ensure a tight fit between the cold shrink sleeve and the cable, thereby improving the sealing effect and preventing moisture and contaminants from entering the cable. Silicone has excellent waterproof properties and can effectively block moisture from entering the cable connection, reducing moisture problems inside the cable and preventing electrical failures.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. It improves the cutting efficiency of different material layers of photovoltaic cables, and at the same time improves the uniformity of material layer cutting. The elastic cold shrink cylinder has high sealing and waterproof properties, and does not require secondary waterproofing treatment, which improves the construction efficiency of photovoltaic cable end treatment; 2. The umbrella-shaped structure of the umbrella-shaped cold shrink sleeve increases the path of the leakage current, reduces the electric field strength, provides good insulation effect, and prevents the current from leaking through external objects. The stacked structure of the umbrella-shaped design helps to drain water and prevent rainwater and moisture from accumulating in the cable connection part, thereby avoiding cable failure caused by moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram used to reflect the photovoltaic cable structure in an embodiment of the present application.

[0026] Figure 2 It is a schematic structural diagram of an embodiment of the present application for reflecting the ring sleeve, the first support bar and the elastic cold shrink cylinder.

[0027] Figure 3It is a schematic diagram of the structure of the embodiment of the present application for reflecting the longitudinal limit block group, the transverse limit block group, the longitudinal cutter and the transverse cutter.

[0028] Figure 4 It is a schematic diagram of the structure of a three-finger cold shrink sleeve used in an embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the structure of the embodiment of the present application for reflecting the PVC tape layer, the umbrella-shaped cold shrink sleeve and the finger cold shrink sleeve.

[0030] Figure 6 It is a schematic diagram of the structure of the tape layer and the silicone layer used in the embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of the structure of the ring sleeve, the ring spring and the grounding wire used in the embodiment of the present application.

[0032] Explanation of reference numerals: 01, exposed insulating layer; 02, semi-conductive layer; 03, copper shielding layer; 04, inner sheath; 05, outer sheath; 1, ring sleeve; 11, elastic cold shrink cylinder; 12, first support bar; 13, longitudinal groove; 14, transverse groove; 15, support ring groove; 16, grounding wire; 17, annular spring; 2, three-finger cold shrink sleeve; 21, finger cold shrink sleeve; 22, main cold shrink sleeve; 23, second support bar; 3, umbrella-shaped cold shrink sleeve; 4, Longitudinal limit block group; 41, longitudinal cutter; 42, first longitudinal limit block; 43, second longitudinal limit block; 44, third longitudinal limit block; 45, longitudinal clamping groove; 46, longitudinal clamping block; 5, transverse limit block group; 51, transverse cutter; 52, first transverse limit block; 53, second transverse limit block; 54, third transverse limit block; 55, transverse clamping groove; 56, transverse clamping block; 6, tape layer; 7, PVC tape layer; 8, silicone layer. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 This application is described in further detail.

[0034] The embodiment of the present application discloses a cold shrink sealing head for a mountain photovoltaic cable.

[0035] like Figure 1 The mountain photovoltaic cable in the embodiment of the present application includes three cable cores, each cable core is wrapped with an exposed insulating layer 01, the exposed insulating layer 01 is wrapped with a semi-conductive layer 02, the three cable cores are wrapped together by a copper shielding layer 03 into a cable (the copper shielding layer 03 can be torn open), the copper shielding layer 03 is wrapped with an inner protective layer 04, and the inner protective layer 04 is wrapped with an outer protective layer 05.

[0036] like Figure 2 , Figure 3 , Figure 4 and Figure 5 The mountain photovoltaic cable cold shrink sealing head includes three ring sleeves 1, a three-finger cold shrink sleeve 2 and an umbrella-shaped cold shrink sleeve 3.

[0037] Both ends of the ring sleeve 1 are welded with an elastic cold shrink cylinder 11, and a first support bar 12 is inserted into the elastic cold shrink cylinder 11. The first support bar 12 is a nylon bar, and the nylon bar is placed along the inside of the elastic cold shrink cylinder 11, and is arranged in a circular or spiral shape. The circumferential surface of the ring sleeve 1 is provided with a group of longitudinal grooves 13 along its generatrix direction, and the number of the group of longitudinal grooves 13 is two, and the two longitudinal grooves 13 are arranged oppositely. The circumferential surface of the ring sleeve 1 is provided with a group of transverse grooves 14 along its circumferential direction, and the number of the group of transverse grooves 14 is two, and the two transverse grooves 14 are arranged oppositely, and the longitudinal grooves 13 and the transverse grooves 14 are staggered. The longitudinal groove 13 is openly arranged, and the end away from the end of the photovoltaic cable and the two ends of the transverse groove 14 are located on the same ring line of the circumferential surface of the ring sleeve 1. A longitudinal cutter 41 is installed in the longitudinal groove 13, and the longitudinal cutter 41 is connected to the longitudinal limit block group 4. A transverse cutter 51 is installed in the transverse groove 14, and the transverse cutter 51 is connected to the transverse limit block group 5; when the longitudinal limit block group 4 is clamped in the corresponding position of the longitudinal groove 13, the longitudinal cutter 41 extends the corresponding feed amount, and when the transverse limit block group 5 is clamped in the corresponding position of the transverse groove 14, the transverse cutter 51 extends the corresponding feed amount.

[0038] The longitudinal limit block group 4 includes a first longitudinal limit block 42, a second longitudinal limit block 43 and a third longitudinal limit block 44, and the transverse limit block group 5 includes a first transverse limit block 52, a second transverse limit block 53 and a third transverse limit block 54; The bottom of the first longitudinal limit block 42, the bottom of the second longitudinal limit block 43 and the bottom of the third longitudinal limit block 44 are all provided with longitudinal clamping grooves 45, and the top of the second longitudinal limit block 43, the top of the third longitudinal limit block 44 and the top of the longitudinal cutter 41 are all provided with longitudinal clamping blocks 46, and the longitudinal clamping blocks 46 and the longitudinal clamping grooves 45 are tightly matched; The bottom of the first transverse limit block 52, the bottom of the second transverse limit block 53 and the bottom of the third transverse limit block 54 are all provided with transverse clamping grooves 55, and the top of the second transverse limit block 53, the top of the third transverse limit block 54 and the top of the transverse cutter 51 are all provided with transverse clamping blocks 56, and the transverse clamping blocks 56 and the transverse clamping grooves 55 are tightly matched; If the outer sheath 05 of the photovoltaic cable is to be cut off, it is only necessary to insert the longitudinal clamping block 46 of the longitudinal cutter 41 into the longitudinal clamping groove 45 of the first longitudinal limit block 42, and insert the transverse clamping block 56 of the transverse cutter 51 into the transverse clamping groove 55 of the first transverse limit block 52; If the inner sheath 04 of the photovoltaic cable is to be cut off, it is only necessary to insert the clamping block of the longitudinal cutter 41 into the longitudinal clamping groove 45 of the second longitudinal limit block 43, insert the clamping block of the second longitudinal limit block 43 into the longitudinal clamping groove 45 of the first longitudinal limit block 42, insert the clamping block of the transverse cutter 51 into the transverse clamping groove 55 of the second transverse limit block 53, and insert the clamping block of the second transverse limit block 53 into the transverse clamping groove 55 of the first transverse limit block 52; If the semiconductive layer 02 of the photovoltaic cable is to be cut off, the copper shielding layer 03 only needs to be torn off first, the longitudinal clamping block 46 of the longitudinal cutter 41 is inserted into the longitudinal clamping groove 45 of the third longitudinal limit block 44, the longitudinal clamping block 46 of the third longitudinal limit block 44 is inserted into the longitudinal clamping groove 45 of the second longitudinal limit block 43, the longitudinal clamping block 46 of the second longitudinal limit block 43 is inserted into the longitudinal clamping groove 45 of the first longitudinal limit block 42, and the clamping block of the transverse cutter 51 is inserted into the transverse clamping groove 55 of the third transverse limit block 54, the transverse clamping block 56 of the third transverse limit block 54 is inserted into the transverse clamping groove 55 of the second transverse limit block 53, and the transverse clamping block 56 of the second transverse limit block 53 is inserted into the transverse clamping groove 55 of the first transverse limit block 52. The feed amount of the longitudinal cutter 41 and the transverse cutter 51 can be conveniently and quickly adjusted to accurately cut the corresponding material layer of the photovoltaic cable.

[0039] like Figure 6 and Figure 7 The ring sleeve 1 is provided with a supporting ring groove 15 along its circumference. The elastic shrinkable cylinder 11 of one ring sleeve 1 seals the cross section of the outer protective layer 05 and the inner protective layer 04, and the elastic shrinkable cylinder 11 of the other ring sleeve 1 seals the cross section of the inner protective layer 04 and the copper shielding layer 03. A grounding wire 16 is wound in the supporting ring grooves 15 of the two ring sleeves 1, and a ring spring 17 is wound in the supporting ring grooves 15, and the ring spring 17 presses the grounding wire 16 tightly.

[0040] The two ring sleeves 1 are wrapped with a tape layer 6, and the three-finger cold shrink sleeve 2 is sleeved on the tape layer 6. The three-finger cold shrink sleeve 2 includes three finger cold shrink sleeves 21 and a main cold shrink sleeve 22. The finger cold shrink sleeves 21 and the main cold shrink sleeve 22 are both provided with a second support bar 23. The three cables of the exposed semi-conductive layer 02 of the photovoltaic cable pass through the three finger cold shrink sleeves 21 respectively, and the main cold shrink sleeve 22 is sleeved on the tape layer 6. The three finger cold shrink sleeves 21 are tightened and fixed with the semi-conductive layers 02 of the three optical cables, and the main cold shrink sleeve 22 covers the two ring sleeves 1, thereby enhancing the sealing effect of the photovoltaic optical cable.

[0041] like Figure 5 and Figure 6The three photovoltaic cable cores extend out of the corresponding fingers, and one end of the cold shrink sleeve 21 is wrapped with a PVC tape layer 7. The exposed insulation layer 01 of the three photovoltaic cable cores is sleeved with a ring sleeve 1. The exposed insulation layer 01 of the photovoltaic cable and the ring sleeve 1 are coated with a silicone layer 8. One end of the exposed insulation layer 01 of the photovoltaic cable is sleeved with an umbrella-shaped cold shrink sleeve 3, one end of the umbrella-shaped cold shrink sleeve 3 is sleeved on the PVC tape layer 7, and the umbrella-shaped cold shrink sleeve 3 is wrapped on the exposed insulation layer 01 of the photovoltaic cable and the silicone layer 8 of the ring sleeve 1.

[0042] The implementation principle of the embodiment of the present application is as follows: when cutting off the photovoltaic cable, first adjust the longitudinal limit block group 4 and install the longitudinal cutter 41 according to the part to be cut off, then insert the longitudinal limit block group 4 and the longitudinal cutter 41 into the longitudinal cutting groove 13 together, so that the longitudinal cutter 41 extends out by a corresponding feed amount to facilitate accurate cutting of the part of the photovoltaic cable to be removed along the longitudinal direction of the photovoltaic cable; The ring sleeve 1 is inserted into the photovoltaic cable and pushed so that the longitudinal cutter 41 cuts the corresponding layer of the photovoltaic cable. After the ring sleeve 1 is pushed to the corresponding position, the transverse limit block group 5 is adjusted and the transverse cutter 51 is installed. Then, the transverse limit block and the transverse cutter 51 are inserted into the transverse cutting groove 14 together. The transverse limit block group 5 is pressed tightly by hand and the ring sleeve 1 is rotated so that the transverse cutter 51 extends out the corresponding feed amount to facilitate accurate cutting of the part of the photovoltaic cable that needs to be removed along the circumference of the photovoltaic cable. After the circumferential cutting of the photovoltaic cable is completed, The cut part of the photovoltaic cable is pulled out, and then the longitudinal limit block group 4, the longitudinal cutter 41, the transverse limit block group 5 and the transverse cutter 51 are taken out, and then the first support bars 12 at both ends of the pull ring sleeve 1 are pulled out, so that the elastic cold shrink cylinder 11 can be shrunk and fastened on the photovoltaic cable, which not only improves the cutting efficiency of different material layers of the photovoltaic cable, but also improves the uniformity of cutting the material layers. The elastic cold shrink cylinder 11 has high sealing and waterproof properties, and does not require secondary waterproofing treatment, thereby improving the construction efficiency of the end treatment of the photovoltaic cable.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cold shrink sealing head for mountain photovoltaic cables, characterized in that: The invention comprises a ring sleeve (1), wherein both ends of the ring sleeve (1) are provided with an elastic cold shrink cylinder (11), a first support bar (12) is detachably provided in the elastic cold shrink cylinder (11), the circumferential surface of the ring sleeve (1) is provided with at least one group of longitudinal grooves (13) along the generatrix direction thereof, each group of the longitudinal grooves (13) is arranged opposite to each other, the circumferential surface of the ring sleeve (1) is provided with at least one group of transverse grooves (14) along the circumferential direction thereof, the longitudinal grooves (13) and the transverse grooves (14) are arranged staggered, and the end of the longitudinal groove (13) away from the end of the photovoltaic cable and the two ends of the transverse groove (14) are both located at the same position. On the same ring line of the circumferential surface of the ring sleeve (1), a longitudinal cutter (41) is installed in the longitudinal cutting groove (13), and the longitudinal cutter (41) is connected to a longitudinal limit block group (4); a transverse cutter (51) is installed in the transverse cutting groove (14), and the transverse cutter (51) is connected to a transverse limit block group (5); when the longitudinal limit block group (4) is clamped at a corresponding position of the longitudinal cutting groove (13), the longitudinal cutter (41) extends a corresponding feed amount, and when the transverse limit block group (5) is clamped at a corresponding position of the transverse cutting groove (14), the transverse cutter (51) extends a corresponding feed amount.

2. The cold shrink sealing head for mountain photovoltaic cables according to claim 1 is characterized in that: The longitudinal limit block group (4) includes a first longitudinal limit block (42), and the transverse limit block group (5) includes a first transverse limit block (52). When the first longitudinal limit block (42) is just inserted into the longitudinal groove (13), and when the first transverse limit block (52) is just inserted into the transverse groove (14), the longitudinal cutter (41) and the transverse cutter (51) just reach a feeding depth for cutting off the outer sheath (05) of the photovoltaic cable.

3. The cold shrink sealing head for mountain photovoltaic cables according to claim 2 is characterized in that: The longitudinal limit block group (4) includes a second longitudinal limit block (43), and the transverse limit block group (5) includes a second transverse limit block (53). When the second longitudinal limit block (43) is just inserted into the longitudinal groove (13), and when the second transverse limit block (53) is just inserted into the transverse groove (14), the longitudinal cutter (41) and the transverse cutter (51) just reach a feeding depth for cutting the inner sheath (04) of the photovoltaic cable.

4. The mountain photovoltaic cable cold shrink sealing head according to claim 3, characterized in that: The longitudinal limit block group (4) includes a third longitudinal limit block (44), and the transverse limit block group (5) includes a third transverse limit block (54). When the third longitudinal limit block (44) is just inserted into the longitudinal groove (13), and when the third transverse limit block (54) is just inserted into the transverse groove (14), the longitudinal cutter (41) and the transverse cutter (51) just reach a feeding depth for cutting the semi-conductive layer (02) of the photovoltaic cable.

5. The cold shrink sealing head for mountain photovoltaic cables according to claim 4 is characterized in that: The bottom of the first longitudinal limit block (42), the bottom of the second longitudinal limit block (43) and the bottom of the third longitudinal limit block (44) are all provided with longitudinal clamping grooves (45); the top of the second longitudinal limit block (43), the top of the third longitudinal limit block (44) and the top of the longitudinal cutter (41) are all provided with longitudinal clamping blocks (46); the longitudinal clamping blocks (46) and the longitudinal clamping grooves (45) are tightly matched; The bottom of the first transverse limit block (52), the bottom of the second transverse limit block (53) and the bottom of the third transverse limit block (54) are all provided with transverse clamping grooves (55), and the top of the second transverse limit block (53), the top of the third transverse limit block (54) and the top of the transverse cutter (51) are all provided with transverse clamping blocks (56), and the transverse clamping blocks (56) and the transverse clamping grooves (55) are tightly matched.

6. The cold shrink sealing head for mountain photovoltaic cables according to any one of claims 1 to 5, characterized in that: The ring sleeve (1) is provided with a supporting ring groove (15) along its circumference, a grounding wire (16) is wound in the supporting ring groove (15), an annular spring (17) is arranged in the supporting ring groove (15), and the annular spring (17) presses the grounding wire (16).

7. The cold shrink sealing head for mountain photovoltaic cables according to claim 6, characterized in that: One of the ring sleeves (1) is sleeved on the inner sheath (04) of the photovoltaic cable, and the other ring sleeve (1) is sleeved on the copper shielding layer (03) of the photovoltaic cable. A three-finger cold shrink sleeve (2) is sleeved on the two ring sleeves (1). The three-finger cold shrink sleeve (2) includes three finger cold shrink sleeves (21) and a main cold shrink sleeve (22). Second support bars (23) are arranged in the finger cold shrink sleeves (21) and the main cold shrink sleeve (22). The three exposed semi-conductive layers (02) of the photovoltaic cable are respectively passed through the three finger cold shrink sleeves (21). The main cold shrink sleeve (22) is sleeved on the two ring sleeves (1) of the photovoltaic cable.

8. The cold shrink sealing head for mountain photovoltaic cables according to claim 7, characterized in that: The two ring sleeves (1) are wrapped together with a tape layer (6), and the main shrink sleeve (22) is sleeved on the tape layer (6).

9. The cold shrink sealing head for mountain photovoltaic cables according to claim 7, characterized in that: The semi-conductive layer (02) of the photovoltaic cable extending out of the finger shrink sleeve (21) is covered with a PVC tape layer (7) wrapped around it, and a ring sleeve (1) is covered on the exposed insulating layer (01) of the photovoltaic cable, and one end of the exposed insulating layer (01) of the photovoltaic cable is covered with an umbrella-shaped shrink sleeve (3), one end of the umbrella-shaped shrink sleeve (3) is covered on the PVC tape layer (7), and the umbrella-shaped shrink sleeve (3) covers the ring sleeve (1) on the exposed insulating layer (01) of the photovoltaic cable.

10. The cold shrink sealing head for mountain photovoltaic cables according to claim 9, characterized in that: A silicone layer (8) is smeared on the exposed insulating layer (01) of the photovoltaic cable, and the umbrella-shaped cold shrink sleeve (3) is tightly sleeved on the silicone layer (8).

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