CN115832734A - Cable connector with multifunctional grounding mode and grounding method of cable connector - Google Patents
Cable connector with multifunctional grounding mode and grounding method of cable connector Download PDFInfo
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- CN115832734A CN115832734A CN202211672237.5A CN202211672237A CN115832734A CN 115832734 A CN115832734 A CN 115832734A CN 202211672237 A CN202211672237 A CN 202211672237A CN 115832734 A CN115832734 A CN 115832734A
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Abstract
The invention discloses a cable joint with a multifunctional grounding mode and a grounding method of the cable joint, wherein the cable joint comprises a prefabricated rubber part, a wiring terminal part and a protective shell, the prefabricated rubber part is sleeved outside insulating layers of two main cables, and two ends of the prefabricated rubber part are lapped on outer shielding layers of the two main cables; the wiring terminal part is respectively connected with the aluminum wire/copper wire shielding layers of the grounding cable and the two main cables, the protective shell is sleeved outside the wiring terminal part and the prefabricated rubber part, the end part of the protective shell is provided with a main opening for the main cable to extend out and a grounding opening for the grounding cable to extend out, and the protective shell is filled with a waterproof sealing adhesive layer; according to the cable joint with the multifunctional grounding mode and the grounding method of the cable joint, the grounding cable is connected with the aluminum wire/copper wire shield of the main cable through the wiring terminal, aiming at different grounding cables, the connection between the wiring terminals can be changed, the cable joint is flexible and changeable, and the installation process is simple and convenient.
Description
Technical Field
The invention relates to the technical field of cable connectors, in particular to a cable connector with a multifunctional grounding mode and a grounding method of the cable connector.
Background
The ground connection of cable joint is the important component of cable ground system, if ground connection is bad or the ground connection mode is wrong, can form induced voltage at the shielding layer, and the cable shielding layer can generate heat like this, and the normal operating of circuit is influenced to a large amount of electric energy of loss, when cable line takes place short circuit fault, suffers thunder and lightning impact or operates overvoltage, can form very high induced voltage on the shielding. Personal safety will be compromised and even the cable outer sheath may be punctured.
Currently, the grounding connection of the intermediate joint is connected with the grounding wire and the cable metal shield through metal shells respectively. Different structures of the metal shell are required for different grounding cables (coaxial and single core grounding cables). This grounding method has the following problems: 1) The on-site change of the grounding mode is difficult, the metal copper shell needs to be replaced according to a specific grounding cable, and the construction period is prolonged. 2) The connection mode of the metal shielding layer and the copper shell adopts lead sealing, so that the grounding connection mode is complicated, wherein the lead sealing quality is closely related to the operation capability of personnel. 3) The copper wire/aluminum wire shielded cable has poor sealing performance with the metal shell.
Disclosure of Invention
The invention aims to overcome the defects and provides the cable joint with the multifunctional grounding mode and the grounding method of the cable joint.
The invention provides a cable joint with a multifunctional grounding mode, which comprises a prefabricated rubber part, a wiring terminal part and a protective shell, wherein the prefabricated rubber part is sleeved outside insulating layers of two main cables, and two ends of the prefabricated rubber part are lapped on outer shielding layers of the two main cables; the terminal portion is connected respectively with the aluminium silk copper wire shielding layer of ground cable and two leader cables, and the outside of terminal portion and prefabricated rubber spare is located to the protective housing cover, and the tip of protective housing has the main opening that lets the leader cable stretch out and lets the ground connection opening that ground cable stretches out, and waterproof sealing glue layer fills in the protective housing.
Furthermore, the grounding cable is a single-core grounding cable, and the wiring terminal part is respectively connected with the conductor of the grounding cable and the aluminum wire/copper wire shielding layers of the two main cables.
Furthermore, the grounding cable is a coaxial grounding cable, the wiring terminal part is provided with two wiring terminal units, two ends of one wiring terminal unit are respectively connected with the aluminum wire/copper wire shielding layer of one main cable and the outer conductor of the grounding cable, and two ends of the other wiring terminal unit are respectively connected with the aluminum wire/copper wire shielding layer of the other main cable and the inner conductor of the grounding cable.
Furthermore, still include waterproof sealing glue layer, waterproof sealing glue layer fills in the protective housing inner chamber.
Furthermore, a sealing glue filling opening communicated with the inner cavity of the protective shell, an end cover covering the sealing glue filling opening and a sealing tape layer wrapping the sealing glue filling opening and the outer side of the end cover are arranged on the protective shell.
Further, the sealing tape layer is a PVC tape sealing layer.
Further, the protective shell comprises two half shells which are oppositely arranged and fixedly connected through bolts.
Further, the protective shell is a glass fiber reinforced plastic shell.
Further, still include the waterproof clay layer of ground connection, the waterproof clay layer of ground connection is around wrapping in ground connection opening outer wall and the ground cable outside.
Further, still include main waterproof mortar layer, main waterproof mortar layer is around wrapping on main opening outer wall and main cable outside.
According to another aspect of the present invention, there is provided a method for grounding a cable joint, wherein a main cable sequentially includes a conductor core, an insulating layer, an outer shielding layer, an aluminum wire/copper wire shielding layer, and an outer sheath from inside to outside, and the method includes the following steps: step 1, stripping the end parts of two main cables, and sequentially stripping an outer sheath, an aluminum wire/copper wire shielding layer, an outer shielding layer and an insulating layer at the end part of each main cable to a corresponding set distance; step 2, sleeving a connecting pipe on conductor cores at the end parts of the two main cables, sleeving a prefabricated rubber part outside the connecting pipe, and overlapping two ends of the prefabricated rubber part on outer shielding layers at the end parts of the two main cables; step 3, connecting the aluminum wire/copper wire shielding layers at the end parts of the two main cables to the grounding cable through the wiring terminals, sequentially peeling off the outer sheath, the outer conductor and the insulating layer at the end part of the coaxial grounding cable when the grounding cable is a coaxial grounding cable, connecting the aluminum wire/copper wire shielding layer at the end part of one main cable with the outer conductor of the coaxial grounding cable through the wiring terminals, and connecting the aluminum wire/copper wire shielding layer at the end part of the other main cable with the inner conductor of the coaxial grounding cable through the wiring terminals; when the grounding cable is a single-core grounding cable, the outer sheath and the insulating layer of the single-core grounding cable are sequentially stripped, and the aluminum wire/copper wire shielding layers at the end parts of the two main cables are respectively connected with the conductor of the single-core grounding cable through the wiring terminal.
The invention has the beneficial effects that: compared with the existing method, the cable joint with the multifunctional grounding mode does not need a metal copper shell and a lead sealing process, the grounding cable is connected with the aluminum wire/copper wire shield of the main cable through the wiring terminal, and for different grounding cables, the connection between the wiring terminals can be changed, so that the cable joint is flexible and changeable, and the installation process is simple and convenient; waterproof sealing is carried out through waterproof sealant and the glass fiber reinforced plastic shell, and the sealing effect is good.
Drawings
FIG. 1 is a schematic diagram of a cable connector with a multi-function grounding scheme in accordance with an embodiment of the present invention;
fig. 2 is a schematic structural view of a cable connector having a multifunctional grounding mode according to still another embodiment of the present invention.
Fig. 1, coaxial ground cable; 2. a glass fiber reinforced plastic shell; 3. a wiring terminal; 4. a waterproof sealing adhesive layer; 5. an aluminum wire/copper wire shielding layer; 6. an outer conductor; 7. an inner conductor; 8. prefabricating a rubber part; 9. the main cable 10 is a single-core grounding cable, the conductor 11 is a conductor, and the sealant filling port 12 is a sealant filling port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a schematic diagram of a cable connector with a multi-function grounding scheme in accordance with an embodiment of the present invention; fig. 2 is a schematic structural diagram of a cable connector with a multifunctional grounding mode according to another embodiment of the present invention.
As shown in fig. 1 and fig. 2, the cable joint with a multifunctional grounding manner in this embodiment includes a preformed rubber member 8, a terminal portion, a protective shell, a grounding waterproof mastic layer, a main waterproof mastic layer, and a waterproof sealant layer 4.
The prefabricated rubber part 8 is sleeved outside the insulating layers of the two main cables 9, and two ends of the prefabricated rubber part are lapped on the outer shielding layers of the two main cables 9.
The terminal part is respectively connected with the aluminum wire/copper wire shielding layers 5 of the grounding cable and the two main cables 9.
As shown in fig. 1, the earth cable is a single core earth cable 10 according to one embodiment of the invention. The terminal part is respectively connected with the conductor 11 of the grounding cable and the aluminum wire/copper wire shielding layers 5 of the two main cables 9. In the present embodiment, the terminal portion includes three connection terminals 3. The aluminum wires/copper wires of the aluminum wire/copper wire shielding layers 5 of the two main cables 9 and the conductor wires of the conductors 11 of the grounding cables are respectively pressed on the three wiring terminals 3, and the three wiring terminals 3 are fixed through bolts after being connected in a plugging mode.
According to a further embodiment of the invention, as shown in fig. 2, the earth cable is a coaxial earth cable 1. The terminal portion has two terminal units. Two ends of one wiring terminal unit are respectively connected with the aluminum wire/copper wire shielding layer 5 of one main cable 9 and the outer conductor 6 of the grounding cable, and two ends of the other wiring terminal unit are respectively connected with the aluminum wire/copper wire shielding layer 5 of the other main cable 9 and the inner conductor 7 of the grounding cable. In this embodiment, the terminal unit includes two terminals 3, wherein the two terminals 3 of one terminal unit are in compression joint with the aluminum wire/copper wire shielding layer 5 of one main cable 9 and the outer conductor 6 of the grounding cable, and the two terminals 3 are fixed by bolts after being connected in a plugging and unplugging manner; and two wiring terminals 3 of the other wiring terminal unit are in compression joint with the aluminum wire/copper wire shielding layer 5 of the other main cable 9 and the inner conductor 7 of the grounding cable, and the two wiring terminals 3 are fixed through bolts after being connected in a plugging and unplugging manner.
The protective housing is glass steel shell 2, and the outside of locating ground cable and two root cable 9 is overlapped, and prefabricated rubber spare 8 and terminal part are located the protective housing respectively. The protective shell comprises two half shells which are oppositely arranged (left and right are oppositely arranged as shown in figures 1 and 2), and the two half shells are fixedly connected through bolts. Each half shell is provided with a sealant filling opening 12 communicated with the inner cavity of the protective shell, an end cover covering the sealant filling opening 12 and a sealing tape layer wrapping the sealant filling opening 12 and the outer side of the end cover. The sealing tape layer is a PVC tape sealing layer. The end of the protective shell has a ground opening for the ground cable to extend out and two main openings for the two main cables 9 to extend out. Wherein the number of ground openings is determined according to the type of cable joint. The number of grounding openings is 1 when the cable joint is a through joint, and 2 when the cable joint is an insulated joint and the grounding cable is a single core grounding cable 10.
The quantity of ground connection waterproof daub layer and ground connection opening is the same and the corresponding setting. Each grounding waterproof daub layer is wrapped on the outer wall of the grounding opening and the part of the main cable 9 extending out of the grounding opening, and specifically, each grounding waterproof daub layer is wrapped on the outer wall of the corresponding grounding opening and the outer side of the corresponding grounding cable. The corresponding side refers to the side of the grounding opening, for example, the left grounding waterproof daub layer is wrapped on the outer wall of the left grounding opening and the outer protective sleeve of the left grounding cable.
The two main waterproof daub layers are respectively positioned on the outer walls of the two main openings, and each main waterproof daub layer is wrapped on the outer wall of each main opening and the part of the main cable 9 extending out of the main opening, specifically on the outer side of the corresponding main opening outer wall and the outer side of the outer sheath of the main cable 9 on the corresponding side.
The waterproof sealing glue layer 4 is formed by filling waterproof sealant in the protective shell.
The embodiment also provides a grounding method of the cable joint, the main cable 9 sequentially comprises a conductor core, an insulating layer, an outer shielding layer, an aluminum wire/copper wire shielding layer 5 and an outer sheath from inside to outside, and the method comprises the following steps:
step 1, stripping the end parts of the two main cables, and sequentially stripping the outer sheaths of the end parts of the main cables, the aluminum wire/copper wire shielding layers, the outer shielding layers and the insulating layers. The insulating layer is stripped to a proper distance to expose the conductor core in the insulating layer, so that the connecting pipe can be sleeved outside the conductor cores of the two main cables 9; strip suitable distance with outer shielding layer for when establishing two main cable end 9 portions with 8 cover of prefabricated rubber spare, outer shielding layer has the part to be located prefabricated rubber spare, and the distance of shelling of outer shielding layer and insulating layer is no longer repeated here for prior art. And (3) stripping the aluminum wire/copper wire shielding layer 5 and the outer sheath to a proper distance, so that after the protective shell is finally sleeved on, the aluminum wire shielding layer is positioned outside the prefabricated rubber part 8 and in the protective shell, and the outer sheath is partially positioned in the protective shell. The two half shells are respectively sleeved on the two main cables 9 from the end parts of the two main cables 9.
And 2, sleeving a connecting pipe on the conductor cores at the end parts of the two main cables 9, sleeving a prefabricated rubber part outside the connecting pipe, and overlapping two ends of the prefabricated rubber part 8 on the outer shielding layers at the end parts of the two main cables 9.
Step 3, connecting the aluminum wire/copper wire shielding layers 5 at the end parts of the two main cables 9 to the grounding cable through a wiring terminal, when the grounding cable is a coaxial grounding cable 1, sequentially stripping the outer sheath, the outer conductor 6 and the insulating layer of the end part 1 of the coaxial grounding cable to expose the outer conductor 6 and the inner conductor 7, connecting the aluminum wire/copper wire shielding layer 5 at the end part of one main cable 9 with the outer conductor 6 of the coaxial grounding cable 1 through the wiring terminal, and connecting the aluminum wire/copper wire shielding layer 5 at the end part of the other main cable 9 with the inner conductor 7 of the coaxial grounding cable 1 through the wiring terminal; when the grounding cable is a single-core grounding cable 10, the outer sheath and the insulating layer of the single-core grounding cable 10 are sequentially stripped to expose the conductor 11, and the aluminum wire/copper wire shielding 5 layers at the end parts of the two main cables 9 are respectively connected with the conductor 11 of the single-core grounding cable 10 through the wiring terminals.
And 4, fastening the two half shells together to form a protective shell sleeved at the end parts of the two main cables and the end part of the grounding cable.
And 5, wrapping the grounding waterproof cement layer on the outer wall of the grounding opening and the outer sheath of the grounding cable, wrapping the main waterproof cement layer on the outer wall of the main opening and the outer side of the outer sheath of the main cable 9, and filling waterproof sealant into the protective shell from the sealant filling port 12 on the protective shell.
The installation process of the cable joint with the multifunctional grounding mode in the embodiment is as follows: the two half shells are respectively sleeved on the two main cables 9 from the end parts of the two main cables 9. The connecting pipe is sleeved on the end conductor cores of the two main cables 9, the prefabricated rubber part 8 is sleeved outside the connecting pipe, and two ends of the prefabricated rubber part are lapped on the outer shielding layers of the two main cables 9 (the connecting pipe, the prefabricated rubber part 8 and the installation mode thereof are in the prior art, and are not described herein again). Then, depending on the type of the grounding cable (coaxial and single core), the aluminum/copper wire shields 5 of the two main cables 9 are connected to the grounding cable via the connection terminals 3. This can be achieved for different earth cables by merely changing the connection between the connection terminals 3. And then the two half shells are fastened by bolts. Then the grounding waterproof mortar layer is wrapped on the outer wall of the grounding opening and the outer side of the grounding cable, and the main waterproof mortar layer is wrapped on the outer wall of the main opening and the outer side of the outer sheath of the main cable 9. And then the waterproof sealant is filled in the protective shell from the sealant filling port 12, an end cover is covered on the sealant filling port 12, and a layer of PVC tape is wound.
In summary, the specific application examples of the present invention do not limit the scope of the present invention, and all technical solutions adopting equivalent substitution fall within the scope of the present invention.
Claims (10)
1. A cable joint with a multifunctional grounding mode is characterized by comprising a prefabricated rubber part, a wiring terminal part and a protective shell, wherein the prefabricated rubber part is sleeved outside insulating layers of two main cables, and two ends of the prefabricated rubber part are lapped on outer shielding layers of the two main cables; the wire connection terminal part is connected respectively with the aluminium silk copper wire shielding layer of ground cable and two leader cables, the protective housing cover is located wire connection terminal part with the outside of preformed rubber spare, the tip of protective housing has lets the main opening that the leader cable stretches out with let the ground connection opening that ground cable stretches out, waterproof sealing glue layer fill in the protective housing.
2. The cable joint with multifunctional grounding mode according to claim 1, wherein the grounding cable is a single core grounding cable, and the wiring terminal part is connected with the conductor of the grounding cable and the aluminum wire/copper wire shielding layers of the two main cables respectively.
3. The cable joint with multifunctional grounding mode as claimed in claim 1, wherein the grounding cable is a coaxial grounding cable, and the connecting terminal portion has two connecting terminal units, wherein two ends of one of the connecting terminal units are respectively connected with the aluminum/copper wire shielding layer of one main cable and the outer conductor of the grounding cable, and two ends of the other connecting terminal unit are respectively connected with the aluminum/copper wire shielding layer of the other main cable and the inner conductor of the grounding cable.
4. The cable joint with the multifunctional grounding mode according to claim 1, further comprising a waterproof sealant layer, wherein the waterproof sealant layer is filled in the inner cavity of the protective shell.
5. The cable joint with multifunctional grounding mode as claimed in claim 4, wherein the protective shell is provided with a sealant filling opening communicated with the inner cavity of the protective shell, an end cap covering the sealant filling opening, and a sealing tape layer wrapping the sealant filling opening and the outer side of the end cap.
6. The cable joint with multifunctional grounding mode as claimed in claim 5, wherein the sealing tape layer is a PVC tape sealing layer.
7. A multifunctional grounding cable joint as claimed in claim 1, wherein the protective casing comprises two half shells disposed oppositely and fixedly connected by bolts.
8. The cable joint with multifunctional grounding mode according to claim 1, further comprising a grounding waterproof mastic layer, wherein the grounding waterproof mastic layer is wrapped around the outer wall of the grounding opening and the outer side of the grounding cable.
9. The multifunctional grounding cable joint as claimed in claim 1, further comprising a main waterproof mastic layer wrapped around the outer wall of the main opening and the outer side of the main cable.
10. A grounding method of a cable joint is characterized in that a main cable sequentially comprises a conductor core, an insulating layer, an outer shielding layer, an aluminum wire/copper wire shielding layer and an outer sheath from inside to outside, and the grounding method comprises the following steps:
step 1, stripping the end parts of two main cables, and sequentially stripping an outer sheath, an aluminum wire/copper wire shielding layer, an outer shielding layer and an insulating layer at the end part of each main cable to a corresponding set distance;
step 2, sleeving a connecting pipe on conductor cores at the end parts of the two main cables, sleeving a prefabricated rubber part outside the connecting pipe, and overlapping two ends of the prefabricated rubber part on outer shielding layers at the end parts of the two main cables;
step 3, connecting the aluminum wire/copper wire shielding layers at the end parts of the two main cables to the grounding cable through the wiring terminals, when the grounding cable is a coaxial grounding cable, sequentially stripping the outer sheath, the outer conductor and the insulating layer at the end part of the coaxial grounding cable, connecting the aluminum wire/copper wire shielding layer at the end part of one main cable with the outer conductor of the coaxial grounding cable through the wiring terminals, and connecting the aluminum wire/copper wire shielding layer at the end part of the other main cable with the inner conductor of the coaxial grounding cable through the wiring terminals; when the grounding cable is a single-core grounding cable, the outer sheath and the insulating layer of the single-core grounding cable are sequentially stripped, and the aluminum wire/copper wire shielding layers at the end parts of the two main cables are respectively connected with the conductor of the single-core grounding cable through the wiring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211672237.5A CN115832734A (en) | 2022-12-26 | 2022-12-26 | Cable connector with multifunctional grounding mode and grounding method of cable connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211672237.5A CN115832734A (en) | 2022-12-26 | 2022-12-26 | Cable connector with multifunctional grounding mode and grounding method of cable connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115832734A true CN115832734A (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211672237.5A Pending CN115832734A (en) | 2022-12-26 | 2022-12-26 | Cable connector with multifunctional grounding mode and grounding method of cable connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115832734A (en) |
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2022
- 2022-12-26 CN CN202211672237.5A patent/CN115832734A/en active Pending
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