CN115472343A - High-voltage smart cable and production process thereof - Google Patents

High-voltage smart cable and production process thereof Download PDF

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Publication number
CN115472343A
CN115472343A CN202211183139.5A CN202211183139A CN115472343A CN 115472343 A CN115472343 A CN 115472343A CN 202211183139 A CN202211183139 A CN 202211183139A CN 115472343 A CN115472343 A CN 115472343A
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processing unit
data processing
cable
initial
preset
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CN115472343B (en
Inventor
马仲
陈钢
邓声华
刘和平
黎照铭
黄宝俊
周榆宜
冯政浩
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GUANGZHOU LINGNAN CABLE CO Ltd
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GUANGZHOU LINGNAN CABLE CO Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0036—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H01B13/0207—Details; Auxiliary devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0216—Two layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electric Cables (AREA)

Abstract

The invention relates to the technical field of cable production, in particular to a high-voltage intelligent cable and a production process thereof, wherein when a corrugated aluminum sheath is processed and installed, a data acquisition unit determines the installation distance of a chip and the groove width of the corrugated aluminum sheath according to cable use environment parameters input by a user, when the installation distance of the chip and the groove width of the corrugated aluminum sheath are determined, a data processing unit determines the initial cable transmission rate and the initial cold water spraying amount according to the installation distance and the groove width of the corrugated aluminum sheath, when the cable is transmitted to a sheath extrusion device to coat an outer-layer protective sheath, the data acquisition unit acquires the surface temperature of the outer-layer protective sheath at a preset length node before the corrugated aluminum sheath is completely coated, adjusts the initial cable transmission rate according to the surface temperature, and adjusts the initial cold water spraying amount according to the adjusted initial cable transmission rate.

Description

High-voltage smart cable and production process thereof
Technical Field
The invention relates to the technical field of cable production, in particular to a high-voltage intelligent cable and a production process thereof.
Background
At present, national grid companies put forward the demand for building energy Internet, and in the past, the intelligent cable mainly measures the temperature through optical fibers, but optical fiber temperature measurement signals are transmitted in a wired mode, and the optical fibers are prone to breaking when being stressed in the laying process, so that the temperature measurement effect is affected.
Chinese patent publication No.: CN206098024U discloses a novel intelligent chip measurable temperature location middling pressure power cable, including insulating core structure, the outer cladding of insulating core structure has the metal armor layer, and the cladding has the non-metal oversheath outward, has placed intelligent chip between metal armor layer and the non-metal oversheath, intelligent chip is temperature measurement location chip. The utility model can realize the wireless transmission detection of the cable temperature; can be to cable quick tracking location, though can in time follow numerous cables when the cable breaks down and discern the trouble cable fast, save time for salvageing and maintaining to improve cable operating efficiency and reduce the loss, but do not monitor the temperature of extruding the technology process in the production technology link, cause the damage to intelligent chip at the in-process of installation intelligent chip easily. Therefore, the novel intelligent chip temperature-measurable and location medium-voltage power cable has the following problems: the preparation process is not accurately controlled in the installation process of the intelligent chip, the functional effect of chip installation cannot be guaranteed, and the quality of cable products is influenced.
Disclosure of Invention
Therefore, the invention provides a high-voltage intelligent cable and a production process thereof, which are used for overcoming the problem that the quality of a cable product is influenced because the functional effect of chip installation cannot be ensured because the production process cannot be accurately controlled in the installation process of an intelligent chip in the prior art.
In order to achieve the above object, the present invention provides a production process of a high-voltage smart cable, including the following steps:
s1, when the preorder procedure processing is completed, a controller controls to transmit a preorder cable to a corrugated aluminum sheath processing and mounting device to perform corrugated aluminum sheath processing and mounting;
s2, when the installation of the corrugated aluminum sheath is finished, the controller controls the cable to be transmitted to a chip installation device for chip installation;
and S3, when the chip is installed, the controller controls the cable to be transmitted to the sheath extruding device to coat the outer-layer protective sleeve.
Further, in the step S2, when the corrugated aluminum sheath is processed and installed, the data acquisition unit acquires the cable use environment parameters input by the user, the data processing unit calculates the processing parameters G according to the use environment parameters,
Figure BDA0003866093010000021
wherein C1 max Representing the annual maximum air temperature, C10, of the environmental parameters max Representing the preset annual maximum air temperature, alpha representing the influence weight of the annual maximum air temperature in the environmental parameters, C1 min Represents the annual lowest temperature in the environmental parameters, C10 min The method comprises the steps of representing preset annual lowest temperature, beta representing influence weight of the annual lowest temperature in environmental parameters, R1 representing annual rainfall in the environmental parameters, R10 representing preset rainfall, and gamma representing influence weight of national rainfall.
Further, in the step S2, when calculating the processing parameter is completed, the data processing unit determines the mounting distance of the chip and the groove width of the corrugated aluminum sheath according to a comparison result between the processing parameter G and a preset processing parameter;
the data processing unit is provided with a first preset processing parameter G1, a second preset processing parameter G2, a first installation distance Da1, a second installation distance Da2, a third installation distance Da3, a first groove width Db1, a second groove width Db2 and a third groove width Db3, wherein Da1 is more than Da2 and less than Da3, db1 is more than Db2 and less than Db3, and G1 is more than G2;
if G is less than G1, the data processing unit sets the installation space of the chip to Da1 and sets the groove width of the corrugated aluminum sheath to Db1;
if G1 is not more than G and less than G2, the data processing unit sets the installation distance of the chip to be Da2 and sets the groove width of the corrugated aluminum sheath to be Db2;
and if G3 is less than or equal to G, the data processing unit sets the installation space of the chip to be Da3 and sets the groove width of the corrugated aluminum sheath to be Db3.
Further, in the step S2, when it is determined that the mounting pitch of the chip and the corrugated aluminum sheath groove width are completed, the data processing unit calculates a cable transmission parameter P based on the corrugated aluminum sheath groove width and the chip mounting pitch,
Figure BDA0003866093010000022
where i =1,2,3,dai represents the determined chip mounting pitch, da10 represents the preset chip mounting pitch, α 1 represents the influence weight of the chip mounting pitch, dbi represents the corrugated aluminum sheath groove width, db10 represents the preset corrugated aluminum sheath groove width, and β 1 represents the influence weight of the corrugated aluminum sheath groove width.
Further, in the step S2, when it is determined that calculating the cable transmission parameter P is completed, the data processing unit determines an initial cable transmission rate and an initial cold water spraying amount according to a comparison result between the cable transmission parameter P and a preset cable transmission parameter,
the data processing unit of the control unit is provided with a first preset cable transmission parameter P1, a second preset cable transmission parameter P2, a first cable transmission speed V1, a second cable transmission speed V2, a third cable transmission speed V3, a first cold water spraying amount W1, a second cold water spraying amount W2 and a third cold water spraying amount W3, wherein P1 is more than P2, V1 is more than V2 and more than V3, and W1 is more than W2 and more than W3;
if P is less than P1, the data processing unit sets the initial cable transmission rate as V1 and determines that the initial cold water spraying amount is W1;
if P1 is not more than P and is less than P2, the data processing unit sets the initial cable transmission rate to be V2 and determines the initial cold water spraying amount to be W2;
and if P2 is not more than P, the data processing unit sets the initial cable transmission rate to be V3 and determines that the initial cold water spraying amount is W3.
Further, in the step S3, when the controller controls to transmit the cable to the sheath extrusion device for coating the outer protective sheath, the data acquisition unit obtains a surface temperature F at a preset length node of the outer protective sheath before the corrugated aluminum sheath is completely attached, the data processing unit adjusts the initial cable transmission rate according to a comparison result of the surface temperature and a preset surface temperature,
wherein the data processing unit is provided with a first preset surface temperature F1, a second preset surface temperature F2, a first speed transmission rate adjusting coefficient Kv1 and a second speed transmission rate adjusting coefficient Kv2, wherein F1 is more than F2, kv1 is more than 1 and more than Kv2 is more than 1.3;
if F is less than F1, the data processing unit determines not to adjust the initial cable transmission rate;
if F1 is not more than F and less than F2, the data processing unit determines to adjust the initial cable transmission rate by using Kv 1;
if F2 is less than F, the data processing unit determines to adjust the initial cable transmission rate by using Kv 2;
if the data processing unit adjusts the initial cable transmission rate by using the Kvj transmission rate adjustment coefficient, the adjusted initial cable transmission rate is recorded as V4, and V4= Vx × Kvj is set, where x =1,2,3, j =1,2.
Further, when the initial cable transmission rate adjustment is completed, the data processing unit adjusts the initial cold water spraying amount according to the comparison result of the adjusted cable transmission rate and the preset transmission rate,
the data processing unit sets a first transmission rate D1, a second transmission rate D2, a first preset cable transmission first spraying adjustment coefficient Kw1, a second spraying adjustment coefficient Kw2 and a third spraying adjustment coefficient Kw3, wherein D1 is more than D2, kw1 is more than 1 and more than Kw2 is more than Kw3 and less than 1.3;
if Vx is less than D1, the data processing unit determines not to adjust the initial cold water spraying amount;
if the D1 is not more than Vx and less than D2, the data processing unit determines to adjust the initial cold water spraying amount by using Kw 1;
if D2 is less than or equal to Vx, the data processing unit determines to adjust the initial cold water spraying amount by using Kw 2;
if the data processing unit selects Kwj to adjust the initial cold water spraying amount, recording the adjusted initial cold water spraying amount as W4, and setting W4= Wy × Kwj, wherein y =1,2,3.
Further, when the initial cold water spraying amount adjustment is completed, the data processing unit calculates a difference value Δ V of the initial cable transmission rates before and after the adjustment, sets Δ V = V4-Vx, and adjusts the initial advance amount according to a comparison result of the difference value and a preset difference value,
the data processing unit is provided with a first preset difference value delta D1, a second preset difference value delta D2, a first lead adjusting coefficient Kq1 and a second lead adjusting coefficient Kq2, wherein delta D1 is smaller than delta D2, and Kq1 is smaller than 1 and Kq2 is smaller than 1.2;
if DeltaD is less than DeltaD 1, the data processing unit determines not to adjust the initial lead;
if delta D1 is more than or equal to delta D and less than D2, the data processing unit determines that Kq1 is used for adjusting the initial lifting condition;
if Δ D2 < Δd, the data processing unit determines to adjust the initial advance using Kq 2;
if the data processing unit selects the Kqj lead adjustment coefficient to adjust the initial lead, the adjusted initial lead is recorded as Q2, and Q2= Q1 × Kqj is set, where Q1 is the initial lead.
Further, when the initial lead adjustment is completed, the data acquisition unit acquires an installation image of installing the corrugated aluminum sheath in the step S1, the data processing unit acquires a splicing pitch Dp1 of the corrugated aluminum sheath in the image, calculates a difference Δ Dp between the splicing pitch Dp1 of the corrugated aluminum sheath in the image and a preset splicing pitch Dp10 of the corrugated aluminum sheath, sets Δ Dp = Dp1-Dp10, and readjusts the adjusted lead according to a comparison result of the difference and the preset pitch difference,
the data processing unit is provided with a first preset corrugated aluminum sheath groove width difference value delta Dp1, a second preset corrugated aluminum sheath groove width difference value delta Dp2 and a third lead adjusting coefficient Kq3, wherein delta Dp1 is smaller than delta Dp2, and Kq3 is larger than 0.7 and smaller than 1;
if delta Dp is less than delta Dp1, the data processing unit determines that the adjusted lead is adjusted again by using Kq1, and the adjusted lead is recorded as Q3, and Q3= Qe × Kq1;
if the delta Dp is more than or equal to the delta Dp and less than or equal to the Db2, the data processing unit determines not to adjust the adjusted advance again;
if Db2 < Db, the data processing unit determines to readjust the adjusted advance by using Kq3, and records the adjusted advance as Q3, where Q3= Qe × Kq3, and e =1,2,3.
The invention provides a high-voltage intelligent cable which comprises a cable conductor, wherein the cable conductor is a round stranded conductor or a split conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer are coated on the cable conductor by adopting a three-layer co-extrusion process to form an insulating wire core, the insulating wire core is wrapped with a semi-conductive buffering water-blocking tape by adopting a wrapping process to form a buffering water-blocking layer, the buffering water-blocking layer is wrapped with a corrugated aluminum sheath by adopting a longitudinal wrapping welding process, a chip is arranged in a groove of the corrugated aluminum sheath, and a non-metal outer sheath is extruded on the outer layer of the corrugated aluminum sheath by adopting an extrusion process.
Compared with the prior art, the controller controls the preorder cable to be conveyed to the corrugated aluminum sheath processing and mounting device for processing and mounting the corrugated aluminum sheath when the preorder procedure is completed, the controller controls the cable to be conveyed to the chip mounting device for chip mounting when the corrugated aluminum sheath is completed, the controller controls the cable to be conveyed to the sheath extrusion device for coating of the outer protective sleeve when the chip mounting is completed, wherein the preorder procedure comprises the steps of producing a cable conductor by adopting a twisting process, extruding and wrapping a conductor shielding layer, an insulating layer and an insulating shielding layer on the cable conductor by adopting a three-layer co-extrusion process to form an insulating wire core, and wrapping a semi-conductive buffer water-blocking tape on the insulating wire core by adopting a wrapping process to form a buffer water-blocking layer, so that the accurate control of each link of the cable production is realized.
Furthermore, when the corrugated aluminum sheath is processed and installed, the data acquisition unit acquires the cable use environment parameters input by a user, the data processing unit calculates the processing parameters according to the use environment parameters, and the installation distance of the chip and the groove width of the corrugated aluminum sheath are determined according to the comparison result of the processing parameters and the preset processing parameters, so that the accuracy of the chip installation position in the cable production link is improved, the functional effect of chip installation is ensured, and the quality of a cable product is further improved.
Furthermore, according to the production process of the high-voltage intelligent cable, when the installation distance of the chips and the groove width of the corrugated aluminum sheath are determined to be finished and the calculation of the cable transmission parameters is determined to be finished, the data processing unit determines the initial cable transmission rate and the initial cold water spraying amount according to the comparison result of the cable transmission parameters and the preset cable transmission parameters, so that the accuracy of the control of the initial cable transmission rate is improved, meanwhile, the corresponding cold water spraying amount is matched according to the initial cable transmission rate, the control precision of the cold water spraying amount in the cable production link is improved, the functional effect of chip installation is ensured, and the quality of cable products is further improved.
Further, when the controller controls to transmit the cable to the sheath extrusion device for coating the outer protective sleeve, the data acquisition unit acquires the surface temperature of the outer protective sleeve when the coating is finished, the data processing unit adjusts the initial cable transmission rate according to the comparison result of the surface temperature and the preset surface temperature, when the surface temperature exceeds the range, the heating time in the extrusion device is reduced by increasing the cable transmission rate, the surface temperature control precision of the outer protective sleeve when the coating is finished is improved, the damage of overhigh temperature to the chip is avoided, the functional effect of chip installation is ensured, and the quality of a cable product is further improved.
Further, when the initial cable transmission rate is adjusted, the data processing unit adjusts the initial cold water spraying amount according to a comparison result of the adjusted cable transmission rate and a preset transmission rate, and the cooling effect of the surface of the outer-layer protective sleeve when the coating is completed is improved by increasing the cold water spraying amount when the initial cable transmission rate is changed, so that the functional effect of chip installation is ensured, and the quality of a cable product is further improved.
Further, when the initial cold water spraying amount is adjusted, the data processing unit calculates a difference value of the initial cable transmission rates before and after adjustment, and adjusts the initial lead according to a comparison result of the difference value and a preset difference value, so that the influence on the production effect of the preorder process when the cable transmission rate is changed is reduced, and the quality of a cable product is further improved.
Further, when the initial lead adjustment is completed, the data acquisition unit acquires an installation image of the corrugated aluminum sheath installed in the step S1, the data processing unit acquires the groove width of the corrugated aluminum sheath in the image, the groove width difference value of the corrugated aluminum sheath is acquired through the groove width and the set groove width of the corrugated aluminum sheath, and the adjusted lead is adjusted again through the comparison result of the difference value and the preset distance difference value, so that the influence on each production process when the transmission rate of the cable changes is further ensured, and the outgoing quality of the cable is ensured while the problem of chip damage caused by overhigh surface temperature when the outer layer protective sleeve completes the coating is solved.
Drawings
Fig. 1 is a process flow diagram of a production process of the high-voltage smart cable according to the present invention;
fig. 2 is a process flow diagram of a preamble of step S1 in the production process of the high-voltage smart cable according to the present invention;
fig. 3 is a schematic isometric view of a device for producing the high-voltage smart cable according to the present invention;
fig. 4 is a left side view of the apparatus for manufacturing the high-voltage smart cable according to the present invention;
FIG. 5 is a block diagram of a controller connection configuration according to the present invention;
fig. 6 is a schematic structural diagram of a high-voltage smart cable according to the present invention.
In each figure, 101-a corrugated aluminum sheath processing and mounting device, 102-a first welding device, 103-a corrugated aluminum sheath groove forming clamp, 104-a second welding device, 105-a first camera device, 106-a cable transmission wheel, 107-a chip mounting device, 108-a second camera device, 109-a sheath extruding device, 110-a temperature sensing device, 111-a cold water spraying device, 112-a cold water spraying recovery groove, 21-a cable conductor, 22-a conductor shielding layer, 23-an insulating layer, 24-an insulating shielding layer, 25-a buffer water-blocking layer and 26-a corrugated aluminum sheath; 27-non-metallic outer sheath, 28-chip.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, fig. 1 is a process flow diagram of a manufacturing process of a high-voltage smart cable according to an embodiment of the invention; fig. 2 is a flow chart illustrating a procedure of step S1 in the manufacturing process of the high-voltage smart cable according to the embodiment of the present invention.
The production process of the high-voltage intelligent cable comprises the following steps:
s1, when the preorder procedure processing is finished, the controller controls to transmit the preorder cable to a wrinkling aluminum sheath processing and mounting device to mount a wrinkling aluminum sheath 26;
s2, when the installation of the corrugated aluminum sheath is finished, the controller controls the cable to be transmitted to the chip installation device to install the chip 28;
s3, when the chip is installed, the controller controls the cables to be transmitted to the sheath extrusion device to coat the non-metal outer sheath 27;
specifically, the preamble process comprises:
s11, twisting the cable conductor 21 by adopting a twisting process to form the cable conductor 21;
s12, coating a conductor shielding layer 22, an insulating layer 23 and an insulating shielding layer 24 on the cable conductor 21 by adopting a three-layer co-extrusion process on the cable conductor 21 to form an insulating wire core;
and S13, covering the insulated wire cores by adopting a wrapping process to form a buffering water-resistant layer 25.
Specifically, the equipment adopted for realizing the twisting process flow is a cable twisting machine, and the plastic extruder is adopted for realizing the extrusion process flow.
Specifically, in step S2, when the corrugated aluminum sheath is processed and installed, the data acquisition unit acquires the cable use environment parameters input by the user, the data processing unit calculates the processing parameters G according to the use environment parameters,
Figure BDA0003866093010000081
wherein C1 max Representing the annual maximum temperature, C10, of the environmental parameters max Representing the preset annual maximum air temperature, alpha representing the influence weight of the annual maximum air temperature in the environmental parameters, C1 min Representing the annual lowest temperature, C10, of the environmental parameters min Representing the preset annual lowest temperature, beta representing the influence weight of the annual lowest temperature in the environmental parameters, and R1 representing the annual rainfall in the environmental parametersAmount, R10 represents a preset rainfall amount, and γ represents an influence weight of the national rainfall amount.
Specifically, in step S2, when calculating the processing parameter is completed, the data processing unit determines the mounting distance of the chip and the groove width of the corrugated aluminum sheath according to the comparison result between the processing parameter G and the preset processing parameter;
the data processing unit is provided with a first preset processing parameter G1, a second preset processing parameter G2, a first installation distance Da1, a second installation distance Da2, a third installation distance Da3, a first groove width Db1, a second groove width Db2 and a third groove width Db3, wherein Da1 is more than Da2 and less than Da3, db1 is more than Db2 and less than Db3, and G1 is more than G2;
if G is less than G1, the data processing unit sets the installation distance of the chip as Da1 and sets the groove width of the corrugated aluminum sheath as Db1;
if G1 is less than or equal to G and less than G2, the data processing unit sets the installation distance of the chip as Da2 and sets the groove width of the corrugated aluminum sheath as Db2;
if G3 is less than or equal to G, the data processing unit sets the installation space of the chip to Da3 and sets the groove width of the corrugated aluminum sheath to Db3.
Specifically, in step S2, when it is determined that the mounting pitch of the chip and the wrinkled aluminum sheath groove width are completed, the data processing unit calculates a cable transfer parameter P based on the wrinkled aluminum sheath groove width and the chip mounting pitch
Figure BDA0003866093010000091
Where i =1,2,3,dai represents the determined chip mounting pitch, da10 represents the preset chip mounting pitch, α 1 represents the influence weight of the chip mounting pitch, dbi represents the corrugated aluminum sheath groove width, db10 represents the preset corrugated aluminum sheath groove width, and β 1 represents the influence weight of the corrugated aluminum sheath groove width.
Specifically, in step S2, when it is determined that calculating the cable transmission parameter P is completed, the data processing unit determines an initial cable transmission rate and an initial cold water spraying amount according to a comparison result of the cable transmission parameter P and a preset cable transmission parameter,
the data processing unit of the control unit is provided with a first preset cable transmission parameter P1, a second preset cable transmission parameter P2, a first cable transmission speed V1, a second cable transmission speed V2, a third cable transmission speed V3, a first cold water spraying amount W1, a second cold water spraying amount W2 and a third cold water spraying amount W3, wherein P1 is more than P2, V1 is more than V2 and more than V3, and W1 is more than W2 and more than W3;
if P is less than P1, the data processing unit sets the initial cable transmission rate as V1 and determines the initial cold water spraying amount as W1;
if P1 is not more than P and less than P2, the data processing unit sets the initial cable transmission rate as V2 and determines that the initial cold water spraying amount is W2;
if P2 is less than or equal to P, the data processing unit sets the initial cable transmission rate to be V3 and determines the initial cold water spraying amount to be W3.
Specifically, in the step S3, when the controller controls to transmit the cable to the sheath extrusion device for coating the outer protective sheath, the data acquisition unit obtains the surface temperature F at a preset length node before the outer protective sheath is completely coated with the corrugated aluminum sheath, the data processing unit adjusts the initial cable transmission rate according to the comparison result of the surface temperature and the preset surface temperature,
wherein the data processing unit is provided with a first preset surface temperature F1, a second preset surface temperature F2, a first speed transmission rate regulating coefficient Kv1 and a second speed transmission rate regulating coefficient Kv2, wherein F1 is more than F2, kv1 is more than 1 and more than Kv2 is more than 1.3;
if F is less than F1, the data processing unit determines not to adjust the initial cable transmission rate;
if F1 is less than or equal to F < F2, the data processing unit determines to adjust the initial cable transmission rate by using Kv 1;
if F2 is less than F, the data processing unit determines to adjust the initial cable transmission rate by using Kv 2;
if the data processing unit adjusts the initial cable transmission rate by using the Kvj transmission rate adjustment coefficient, the adjusted initial cable transmission rate is recorded as V4, and V4= Vx × Kvj is set, where x =1,2,3, j =1,2.
Specifically, when the initial cable transfer rate adjustment is completed, the data processing unit adjusts the initial cold water spray amount according to the comparison result of the adjusted cable transfer rate and the preset transfer rate,
the data processing unit sets a first transmission rate D1, a second transmission rate D2, a first preset cable transmission first spraying adjustment coefficient Kw1, a second spraying adjustment coefficient Kw2 and a third spraying adjustment coefficient Kw3, wherein D1 is more than D2, kw1 is more than 1 and more than Kw2 is more than Kw3 and less than 1.3;
if Vx is less than D1, the data processing unit determines not to adjust the initial cold water spraying amount;
if D1 is not more than Vx and less than D2, the data processing unit determines to adjust the initial cold water spraying amount by using Kw 1;
if D2 is less than or equal to Vx, the data processing unit determines to adjust the initial cold water spraying amount by using Kw 2;
if the data processing unit selects Kwj to adjust the initial cold water spraying amount, recording the adjusted initial cold water spraying amount as W4, and setting W4= Wy × Kwj, wherein y =1,2,3.
Specifically, when the initial cold water spraying amount is adjusted, the data processing unit calculates a difference value DeltaV of the initial cable transmission rate before and after adjustment, sets DeltaV = V4-Vx, adjusts the initial advance according to a comparison result of the difference value and a preset difference value,
the data processing unit is provided with a first preset difference value delta D1, a second preset difference value delta D2, a first lead adjusting coefficient Kq1 and a second lead adjusting coefficient Kq2, wherein delta D1 is smaller than delta D2, kq1 is larger than 1 and is smaller than Kq2 and is smaller than 1.2;
if delta D is less than delta D1, the data processing unit determines not to adjust the initial lead;
if the delta D1 is more than or equal to the delta D and less than the D2, the data processing unit determines to use Kq1 to adjust the initial lifting premise;
if the delta D2 is less than the delta D, the data processing unit determines to adjust the initial lead by using Kq 2;
if the data processing unit selects the Kqj lead adjustment coefficient to adjust the initial lead, the adjusted initial lead is recorded as Q2, and Q2= Q1 × Kqj is set, where Q1 is the initial lead.
Specifically, the advance is an advance or delay time for controlling the operation time interval of the corrugated aluminum sheath groove forming jig 103.
Specifically, when the initial lead adjustment is completed, the data acquisition unit acquires an installation image of the corrugated aluminum sheath in the step S1, the data processing unit acquires a corrugated aluminum sheath splicing pitch Dp1 in the image, calculates a difference Δ Dp between the corrugated aluminum sheath splicing pitch Dp1 in the image and a preset corrugated aluminum sheath splicing pitch Dp10, sets Δ Dp = Dp1-Dp10, readjusts the adjusted lead according to the comparison result between the difference and the preset pitch difference,
the data processing unit is provided with a first preset corrugated aluminum sheath groove width difference value delta Dp1, a second preset corrugated aluminum sheath groove width difference value delta Dp2 and a third lead adjusting coefficient Kq3, wherein the delta Dp1 is smaller than the delta Dp2, and the Kq3 is larger than 0.7 and smaller than 1;
if the delta Dp is less than the delta Dp1, the data processing unit determines to adopt Kq1 to readjust the adjusted lead, and records the adjusted lead as Q3, wherein Q3= Qe multiplied by Kq1;
if the delta Dp is more than or equal to the delta Dp1 and less than or equal to the Db2, the data processing unit determines not to readjust the adjusted lead;
if Db2 is less than Db, the data processing unit determines to adopt Kq3 to readjust the adjusted lead amount, and records the adjusted lead amount as Q3, wherein Q3= Qe × Kq3, and e =1,2,3.
Referring to fig. 3-5, fig. 3 is a schematic isometric view of a device for producing a high-voltage smart cable according to an embodiment of the invention; fig. 4 is a left side view of a manufacturing apparatus for a high voltage smart cable according to an embodiment of the present invention; fig. 5 is a block diagram of a connection structure of a controller according to an embodiment of the present invention.
The production device of the high-voltage intelligent cable comprises a corrugated aluminum sheath processing and mounting device 101, a first welding device 102, a corrugated aluminum sheath groove forming clamp 103, a second welding device 104, a first camera device 105, a cable transmission wheel 106, a chip mounting device 107, a second camera device 108, a sheath extruding device 109, a temperature sensing device 110, a cold water spraying device 111 and a cold water spraying recovery groove 112.
Specifically, the corrugated aluminum sheath machining and mounting device 101, the corrugated aluminum sheath groove forming jig 103, the cable transfer wheel 106, and the chip mounting device 107 are all symmetrically arranged in pairs and are driven by cylinders, and the cable transfer wheel 106 is driven by a motor.
Specifically, the electric cylinder can be selected from a multi-stroke electric cylinder, and the camera device can be selected from an industrial camera.
Specifically, the sheath extrusion device 109 comprises a device body, and further comprises a temperature sensing device 110, a cold water spraying device 111, and a cold water spraying recovery tank 112, and in an optional scheme, the temperature sensing device 110 may be an infrared temperature sensor.
Specifically, the controller comprises a data acquisition unit and a data processing unit, the controller is respectively connected with the corrugated aluminum sheath processing and mounting device 101, the first welding device 102, the corrugated aluminum sheath groove forming clamp 103, the second welding device 104, the cable transmission wheel 106, the chip mounting device 107 and the cold water spraying device 112 in a control mode, and the data acquisition unit is respectively connected with the industrial camera and the infrared temperature sensor.
In the production process of the high-voltage smart cable, the controller controls the corrugated aluminum sheath processing and mounting device 101 to complete the mounting of the corrugated aluminum sheath, when the mounting is completed, the controller controls the first welding device 102 to complete the welding at the transverse interface of the corrugated aluminum sheath groove, when the welding at the transverse interface is completed, the controller controls the working time interval lead of the corrugated aluminum sheath groove forming clamp 103 through the determined lead so as to ensure the position of the corrugated aluminum sheath groove and the splicing interval of the corrugated aluminum sheath, and controls the corrugated aluminum sheath groove forming clamp to roll the corrugated aluminum sheath groove according to the determined lead and the width of the corrugated aluminum sheath groove;
after the corrugated aluminum sheath groove is rolled, the controller controls the second welding device 104 to weld the spliced part of the corrugated aluminum sheath according to the image acquired by the first camera device 105 and the determined splicing distance of the corrugated aluminum sheath, and when the spliced part is welded, the controller controls the rotating speed of the cable transmission wheel 106 according to the determined cable transmission rate to enable the cable to be transmitted to the chip manufacturing installation mechanism;
the controller combines the determined chip installation interval with the chip 107 to install the chip in the corrugated aluminum sheath groove according to the image information of the second camera device 108, the cable wraps the non-metal outer sheath through the sheath extrusion device 109 after the chip is installed, and the controller controls the cold water spraying amount to carry out cooling treatment on the non-metal outer sheath according to the water outlet amount of the cold water spraying device 111 controlled by the surface temperature of the non-metal outer sheath acquired by the temperature sensing device 112.
Specifically, the cold water spray recovery tank 112 after cold water spray from the cold water spray device 111 after completion of the spray operation is subjected to low-temperature treatment in the cold water spray recovery tank 112, and the spray water from the cold water spray device 111 can be reused.
Please refer to fig. 6, which is a schematic diagram of a high-voltage smart cable according to an embodiment of the present invention;
the high-voltage intelligent cable comprises a cable conductor 21, wherein the cable conductor 21 adopts a round stranded conductor or a split conductor, a conductor shielding layer 22, an insulating layer 23 and an insulating shielding layer 24 are coated on the cable conductor 21 by adopting a three-layer co-extrusion process to form an insulating wire core, the insulating wire core is wrapped with a semi-conductive buffering water-blocking tape by adopting a wrapping process to form a buffering water-blocking layer 25, the buffering water-blocking layer 25 is wrapped with a corrugated aluminum sheath 26 by adopting a longitudinal wrapping welding process, a chip 28 is arranged in a groove of the corrugated aluminum sheath, and the outer layer of the corrugated aluminum sheath is wrapped with a non-metal outer sheath 27 by adopting an extrusion process.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can be within the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A production process of a high-voltage intelligent cable is characterized by comprising the following steps:
s1, when the preorder procedure processing is completed, a controller controls to transmit a cable to a corrugated aluminum sheath processing device to perform corrugated aluminum sheath processing and installation;
s2, when the corrugated aluminum sheath is machined and installed, the controller controls the cable to be transmitted to a chip installation device for chip installation;
and S3, when the chip is installed, the controller controls the cable to be transmitted to the sheath extruding device to coat the outer-layer protective sleeve.
2. The manufacturing process of high-voltage smart cable according to claim 1, wherein in step S2, when the corrugated aluminum sheath is installed, the data acquisition unit acquires the cable usage environment parameters inputted by the user, the data processing unit calculates the processing parameters G according to the usage environment parameters,
Figure FDA0003866091000000011
wherein C1 max Representing the annual maximum temperature, C10, of the environmental parameters max Representing the preset annual maximum air temperature, alpha representing the influence weight of the annual maximum air temperature in the environmental parameters, C1 min Represents the annual lowest temperature in the environmental parameters, C10 min The method comprises the steps of representing preset annual lowest temperature, beta representing influence weight of the annual lowest temperature in environmental parameters, R1 representing annual rainfall in the environmental parameters, R10 representing preset rainfall, and gamma representing influence weight of national rainfall.
3. The manufacturing process of the high-voltage smart cable according to claim 2, wherein in the step S2, when the calculation of the processing parameters is completed, the data processing unit determines the chip mounting distance and the corrugated aluminum sheath groove width according to the comparison result between the processing parameters G and the preset processing parameters;
the data processing unit is provided with a first preset processing parameter G1, a second preset processing parameter G2, a first installation distance Da1, a second installation distance Da2, a third installation distance Da3, a first groove width Db1, a second groove width Db2 and a third groove width Db3, wherein Da1 is more than Da2 and less than Da3, db1 is more than Db2 and less than Db3, and G1 is more than G2;
if G is less than G1, the data processing unit sets the installation space of the chip to Da1 and sets the groove width of the corrugated aluminum sheath to Db1;
if G1 is not more than G and less than G2, the data processing unit sets the installation distance of the chip to be Da2 and sets the groove width of the corrugated aluminum sheath to be Db2;
and if G3 is less than or equal to G, the data processing unit sets the mounting interval of the chip to be Da3 and sets the groove width of the corrugated aluminum sheath to be Db3.
4. The manufacturing process of high-voltage smart cable according to claim 3, wherein in step S2, when it is determined that the chip mounting pitch and the corrugated aluminum sheath groove width are completed, the data processing unit calculates a cable transmission parameter P based on the corrugated aluminum sheath groove width and the chip mounting pitch,
Figure FDA0003866091000000021
where i =1,2,3,dai represents the mounting pitch of the chip, da10 represents the preset chip mounting pitch, α 1 represents the influence weight of the mounting pitch of the chip, dbi represents the corrugated aluminum sheath groove width, db10 represents the preset corrugated aluminum sheath groove width, and β 1 represents the influence weight of the corrugated aluminum sheath groove width.
5. The manufacturing process of high-voltage smart cable according to claim 4, wherein in step S2, when the calculation of the cable transmission parameter P is determined, the data processing unit determines the initial cable transmission rate and the initial cold water spraying amount according to the comparison result between the cable transmission parameter P and the preset cable transmission parameter,
the data processing unit is provided with a first preset cable transmission parameter P1, a second preset cable transmission parameter P2, a first cable transmission speed V1, a second cable transmission speed V2, a third cable transmission speed V3, a first cold water spraying amount W1, a second cold water spraying amount W2 and a third cold water spraying amount W3, wherein P1 is more than P2, V1 is more than V2 and more than V3, and W1 is more than W2 and more than W3;
if P is less than P1, the data processing unit sets the initial cable transmission rate as V1 and determines that the initial cold water spraying amount is W1;
if P1 is more than or equal to P and less than P2, the data processing unit sets the initial cable transmission rate as V2 and determines that the initial cold water spraying amount is W2;
and if P2 is not more than P, the data processing unit sets the initial cable transmission rate to be V3 and determines that the initial cold water spraying amount is W3.
6. The manufacturing process of high-voltage smart cable as claimed in claim, wherein in the step S3, when the controller controls the cable to be transmitted to the sheath extruding device for coating the outer protective sheath, the data acquisition unit obtains the surface temperature F at the preset length node of the outer protective sheath before the corrugated aluminum sheath is completely coated, the data processing unit adjusts the initial cable transmission rate according to the comparison result between the surface temperature and the preset surface temperature,
wherein the data processing unit is provided with a first preset surface temperature F1, a second preset surface temperature F2, a first speed transmission rate adjusting coefficient Kv1 and a second speed transmission rate adjusting coefficient Kv2, wherein F1 is more than F2, kv1 is more than 1 and more than Kv2 is more than 1.3;
if F is less than F1, the data processing unit determines not to adjust the initial cable transmission rate;
if F1 is not more than F and less than F2, the data processing unit determines to adjust the initial cable transmission rate by using Kv 1;
if F2 is less than F, the data processing unit determines to adjust the initial cable transmission rate by using Kv 2;
if the data processing unit adjusts the initial cable transmission rate by using the Kvj transmission rate adjustment coefficient, the adjusted initial cable transmission rate is recorded as V4, and V4= Vx × Kvj is set, where x =1,2,3, j =1,2.
7. The manufacturing process of high-voltage intelligent cable according to claim 6, wherein when the initial cable transmission rate adjustment is completed, the data processing unit adjusts the initial cold water spraying amount according to the comparison result between the adjusted cable transmission rate and the preset transmission rate,
the data processing unit sets a first transmission rate D1, a second transmission rate D2, a first preset cable transmission first spraying adjustment coefficient Kw1, a second spraying adjustment coefficient Kw2 and a third spraying adjustment coefficient Kw3, wherein D1 is more than D2, kw1 is more than 1 and more than Kw2 is more than Kw3 and less than 1.3;
if Vx is less than D1, the data processing unit determines not to adjust the initial cold water spraying amount;
if D1 is not less than Vx and less than D2, the data processing unit determines to adjust the initial cold water spraying amount by using Kw 1;
if D2 is less than or equal to Vx, the data processing unit determines to adjust the initial cold water spraying amount by using Kw 2;
if the data processing unit selects Kwj to adjust the initial cold water spraying amount, recording the adjusted initial cold water spraying amount as W4, and setting W4= Wy × Kwj, wherein y =1,2,3.
8. The manufacturing process of high-voltage smart cable according to claim 7, wherein when the initial cold water spraying amount is adjusted, the data processing unit calculates a difference Δ V between the initial cable transfer rates before and after the adjustment, sets Δ V = V4-Vx, and adjusts the initial lead amount according to the comparison result between the difference and a preset difference,
the data processing unit is provided with a first preset difference value delta D1, a second preset difference value delta D2, a first lead adjusting coefficient Kq1 and a second lead adjusting coefficient Kq2, wherein delta D1 is smaller than delta D2, and Kq1 is smaller than 1 and Kq2 is smaller than 1.2;
if DeltaD is less than DeltaD 1, the data processing unit determines not to adjust the initial lead;
if delta D1 is more than or equal to delta D and less than D2, the data processing unit determines that Kq1 is used for adjusting the initial lifting condition;
if Δ D2 < Δd, the data processing unit determines to adjust the initial advance using Kq 2;
if the data processing unit selects the Kqj lead adjustment coefficient to adjust the initial lead, the adjusted lead is recorded as Q2, and Q2= Q1 × Kqj is set, where Q1 is the initial lead.
9. The manufacturing process of high-voltage smart cable according to claim 8, wherein upon completion of the initial lead adjustment, the data acquisition unit acquires the installation image of the corrugated aluminum sheath in the step S1, the data processing unit acquires the splicing pitch of the corrugated aluminum sheath in the image, calculates the difference Δ Dp between the splicing pitch Dp1 of the corrugated aluminum sheath in the image and the splicing pitch Dp10 of the preset corrugated aluminum sheath, sets Δ Dp = Dp1-Dp10, readjusts the adjusted lead according to the comparison result between the difference and the preset pitch difference,
the data processing unit is provided with a first preset corrugated aluminum sheath groove width difference value delta Dp1, a second preset corrugated aluminum sheath groove width difference value delta Dp2 and a third lead adjusting coefficient Kq3, wherein delta Dp1 is smaller than delta Dp2, and Kq3 is larger than 0.7 and smaller than 1;
if the delta Dp is less than the delta Dp1, the data processing unit determines to adopt Kq1 to readjust the adjusted lead, and records the adjusted lead as Q3, wherein Q3= Qe multiplied by Kq1;
if the delta Dp is more than or equal to the delta Dp and less than or equal to the Db2, the data processing unit determines not to adjust the adjusted advance again;
if Db2 is less than Db, the data processing unit determines to adopt Kq3 to readjust the adjusted lead amount, and records the adjusted lead amount as Q3, wherein Q3= Qe × Kq3, and e =1,2,3.
10. A high-voltage smart cable adopting the production process of the high-voltage smart cable according to claims 1-9, which is characterized by comprising a cable conductor, wherein the cable conductor adopts a round stranded conductor or a split conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer are coated on the cable conductor by adopting a three-layer co-extrusion process to form an insulating wire core, the insulating wire core is wrapped with a semi-conductive buffer water-blocking tape by adopting a wrapping process to form a buffer water-blocking layer, the buffer water-blocking layer is wrapped with a corrugated aluminum sheath by adopting a longitudinal wrapping welding process, a chip is installed in a groove of the corrugated aluminum sheath, and a non-metal outer sheath is extruded on the outer layer of the corrugated aluminum sheath.
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Publication number Priority date Publication date Assignee Title
CN106571179A (en) * 2015-10-12 2017-04-19 江苏宝安电缆有限公司 Large cross section high current carrying capacity high voltage cable
CN109727714A (en) * 2018-12-17 2019-05-07 山东科虹线缆科技有限公司 Crosslinked polyetylene insulated corrugated aluminium sheath armored high-voltage cable and preparation method thereof
CN112447334A (en) * 2020-11-27 2021-03-05 江苏上上电缆集团有限公司 Manufacturing method of composite RFID (radio frequency identification) temperature measurement intelligent power cable and cable
CN215451016U (en) * 2021-08-16 2022-01-07 无锡市华美电缆有限公司 110kV copper core crosslinked polyethylene insulated corrugated aluminum sheath power cable
WO2022165891A1 (en) * 2021-02-03 2022-08-11 江苏亨通高压海缆有限公司 Buffer layer wrapping and metal sheath welding linkage production line for high-voltage cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106571179A (en) * 2015-10-12 2017-04-19 江苏宝安电缆有限公司 Large cross section high current carrying capacity high voltage cable
CN109727714A (en) * 2018-12-17 2019-05-07 山东科虹线缆科技有限公司 Crosslinked polyetylene insulated corrugated aluminium sheath armored high-voltage cable and preparation method thereof
CN112447334A (en) * 2020-11-27 2021-03-05 江苏上上电缆集团有限公司 Manufacturing method of composite RFID (radio frequency identification) temperature measurement intelligent power cable and cable
WO2022165891A1 (en) * 2021-02-03 2022-08-11 江苏亨通高压海缆有限公司 Buffer layer wrapping and metal sheath welding linkage production line for high-voltage cable
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