CN112786257A - Processing method of copper-core mineral insulated fireproof cable - Google Patents
Processing method of copper-core mineral insulated fireproof cable Download PDFInfo
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- CN112786257A CN112786257A CN202110205938.7A CN202110205938A CN112786257A CN 112786257 A CN112786257 A CN 112786257A CN 202110205938 A CN202110205938 A CN 202110205938A CN 112786257 A CN112786257 A CN 112786257A
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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
- H01B13/06—Insulating conductors or cables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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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
- H01B13/02—Stranding-up
Abstract
The invention relates to a processing method of a copper-core mineral insulation fireproof cable, which comprises the following steps of calculating preparation parameter values according to the type and the diameter of a cable to be prepared, determining a working parameter matrix according to the preparation parameter values, and preprocessing a copper core of the cable according to the determined working parameters, wherein the preprocessing comprises wire drawing processing through a wire drawing machine, twisting and stranding processing through a stranding machine, hardening removing processing of a conductor of a wire core and combination processing of the wire core; secondly, preparing an insulating layer of the pretreated cable copper core through an extruding machine; step three, cooling the cable prepared in the step two by a cooling unit; fourthly, detecting the cable processed by the cooling unit by a thickness detection unit; and step five, determining an adjusting parameter value of the cable according to the thickness detection result in the step four and the wire drawing speed of the wire drawing machine, and adjusting the working parameter according to the adjusting parameter value until the preparation of the cable is completed.
Description
Technical Field
The invention relates to the technical field of copper wire preparation, in particular to a processing method of a copper core mineral insulation fireproof cable.
Background
Currently, cables are made of one or more conductors insulated from each other and an outer insulating sheath that carries power or information from one point to another. In the production process of the copper core mineral insulation fireproof cable, the production process generally comprises the processes of paying off, wire drawing, annealing, cooling, drying, tinning, cooling, wire winding and the like. In the actual preparation process, the preparation process of the copper-core mineral-insulated fireproof cable is complex, different preparation parameters of the copper-core mineral-insulated fireproof cable to be prepared are different, the processing methods of the copper-core mineral-insulated fireproof cable are different, and the quality of the prepared copper-core mineral-insulated fireproof cable is uneven due to the adjustment of the parameters.
Moreover, the existing cooling mode generally adopts an air blower to blow and store the refrigerator, and blows cold air to the surface of the high-temperature copper wire to cool, or adopts a water cooling mode, the existing cooling mode can not uniformly cool the copper wire, and some parts can not be cooled, so that the production quality is influenced.
In the prior art, a preparation processing method for detecting the thickness of the cable after preparation and adjusting the preparation parameters of the subsequent cable according to the thickness detection result is still absent, so that the quality of the prepared cable is improved.
Disclosure of Invention
Therefore, the invention provides a processing method of a copper-core mineral-insulated fireproof cable, which is used for overcoming the problem that the quality of a prepared cable is difficult to improve because a preparation processing method which detects the thickness of the cable after preparation and adjusts the preparation parameters of the subsequent cable according to the thickness detection result is lacked in the prior art.
In order to achieve the purpose, the invention provides a processing method of a copper core mineral insulation fireproof cable, which comprises the following steps:
step one, calculating preparation parameter values according to the type and the diameter of a cable to be prepared, determining a working parameter matrix according to the preparation parameter values, and preprocessing a copper core of the cable according to the determined working parameters, wherein the preprocessing comprises wire drawing processing through a wire drawing machine, twisting and stranding processing through a stranding machine, wire core conductor de-hardening processing and wire core combination processing;
secondly, preparing an insulating layer of the pretreated cable copper core through an extruding machine;
step three, cooling the cable prepared in the step two by a cooling unit;
fourthly, detecting the cable processed by the cooling unit by a thickness detection unit;
step five, determining an adjusting parameter value of the cable according to the thickness detection result in the step four in combination with the wire drawing speed of the wire drawing machine, and adjusting the working parameter according to the adjusting parameter value until the preparation of the cable is completed;
the central control unit is respectively connected with the wire drawing machine, the plastic extruding machine, the cooling unit and the thickness detection unit and controls working parameters of the wire drawing machine, the plastic extruding machine, the cooling unit and the thickness detection unit, before the cable to be prepared is prepared, the central control unit calculates preparation parameter values of the cable according to the type grade and the diameter corresponding to the type of the cable to be prepared, and determines an initial working parameter matrix group according to the preparation parameter values;
the central control unit acquires the type and the diameter of the cable to be prepared, sets the type of the cable to be prepared as Zi and the diameter of the cable to be prepared as Di, determines a preparation parameter value zb according to the type and the diameter of the cable to be prepared,
zb=Fi/F0+Di/D0
zb represents a preparation parameter value of the cable to be prepared, Fi represents a category score corresponding to the category Zi of the cable to be prepared, Z0 represents a preset category score, Di represents the diameter of the cable to be prepared, and D0 represents a preset diameter;
when the device runs according to the working parameters of the determined initial working parameter matrix set, the central control unit sets a detection period to be T, the thickness detection unit applies clamping force to the cable passing through the clamping plate, the central control unit calculates an adjusting parameter value k of the cable according to the wire drawing speed of the wire drawing machine and the clamping force of the clamping plate and correspondingly determines a clamping force adjusting coefficient of the diameter of the cable to be prepared, and adjusts the glue output of the plastic extruding machine and the wire drawing speed of the wire drawing machine in the initially determined working parameters according to the determined adjusting parameter value k;
and the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit in the initially determined working parameters according to the combination of the difference value between the temperature of the cable before the cable passes through the cooling unit and the temperature of the cable after the cable passes through the cooling unit in the third step and the adjustment parameter value k of the cable.
Furthermore, a cable type matrix Z (Z1, Z2, Z3 … Zn) is preset in the central control unit, wherein Z1 represents a first preset cable type, Z2 represents a second preset cable type, Z3 represents a third preset cable type, and Zn represents an nth preset cable type;
a category score matrix F (F1, F2 and F3 … Fn) is also preset in the central control unit, wherein F1 represents a first preset category score, F2 represents a second preset category score, F3 represents a third preset category score, and Fn represents an nth preset category score;
and the central control unit correspondingly determines the category score of the cable according to the category of the cable, and when the category of the cable is Zi, the corresponding category score is Fi.
Further, preparation parameter values ZB (ZB 1, ZB2, ZB3 … ZBn) are preset in the central control unit, wherein ZB1 represents a first preset preparation parameter value, ZB2 represents a second preset preparation parameter value, ZB3 represents a third preset preparation parameter value, and ZBn represents an nth preset preparation parameter value;
an operating parameter matrix group W (V, Jq, Lq, Lt and F) is also preset in the central control unit, wherein V represents the drawing speed of the drawing machine, Jq represents the glue outlet amount of the extruding machine, Lq represents the water spraying amount of the cooling unit, Lt represents the temperature of water sprayed by the cooling unit, and F represents the clamping force of the thickness detection unit;
for the ith operating parameter matrix Wi (Vi, Jqi, Lqi, Lti, Fi), where Vi denotes the ith preset drawing speed of the drawing machine, Jqi denotes the ith preset glue discharge amount of the extruder, Lqi denotes the ith preset water spray amount of the cooling unit, Lti denotes the ith preset temperature of the water sprayed from the cooling unit, Fi denotes the ith preset clamping force of the thickness detection unit, i =1, 2, 3 … n is set.
Further, the central control unit determines an initial working parameter group W of the wire drawing machine, the extruding machine, the cooling unit and the thickness detection unit according to the preparation parameter value zb,
if ZB is less than or equal to ZB1, the central control unit determines that the initial working parameter is W1, selects V1 from W1 as the wire drawing speed of a wire drawing machine, selects Jq1 as the glue output of an extruding machine, selects Lq1 as the water spraying amount of a cooling unit, selects Lt1 as the temperature of water sprayed by the cooling unit, and selects F1 as the clamping force of a thickness detection unit;
if ZB1 is larger than ZB and is not larger than ZB2, the central control unit determines that the initial working parameter is a matrix group as W2, selects V2 from W2 as the wire drawing speed of a wire drawing machine, selects Jq2 as the glue output of an extruding machine, selects Lq2 as the water spraying amount of a cooling unit, selects Lt2 as the temperature of water sprayed by the cooling unit, and selects F2 as the clamping force of a thickness detection unit;
if ZB2 is larger than ZB and is not larger than ZB3, the central control unit determines that the initial working parameter is a matrix group as W3, selects V3 from W3 as the wire drawing speed of a wire drawing machine, selects Jq3 as the glue output of an extruding machine, selects Lq3 as the water spraying amount of a cooling unit, selects Lt3 as the temperature of water sprayed by the cooling unit, and selects F3 as the clamping force of a thickness detection unit;
if ZB (n-1) < ZB not more than ZBn, the central control unit determines the initial working parameter as a matrix group as Wn, selects Vn from Wn as the wire drawing speed of the wire drawing machine, selects Jqn as the glue output of the extruding machine, selects Lqn as the water spraying amount of the cooling unit, selects Ltn as the temperature of water sprayed by the cooling unit, and selects Fn as the clamping force of the thickness detection unit.
Further, the central control unit is prepared according to the determined initial working parameter matrix Wi, the thickness detection unit applies clamping force Fi to the cable passing through the clamping plate, the detection period of the clamping plate is set to be T, the central control unit determines an adjusting parameter value k of the cable according to the wire drawing speed of the wire drawing machine and the clamping force of the clamping plate,
k=α×(F/F0)+V/V0
where k denotes an adjustment parameter value, α denotes a clamping force adjustment coefficient, F denotes a clamping force of a clamping plate, F0 denotes a preset clamping force, V denotes a drawing speed of the drawing machine, and V0 denotes a preset speed.
Furthermore, a diameter matrix D and a clamping force adjusting coefficient matrix A of the cable are preset in the central control unit;
a matrix D (D1, D2, D3 … Dn) of diameters for the cables, wherein D1 represents a first preset diameter of a cable, D2 represents a second preset diameter of a cable, D3 represents a third preset diameter of a cable, and Dn represents an nth preset diameter of a cable;
for the clamping force adjustment coefficient matrix a (a 1, a2, A3 … An), wherein a1 represents a first preset adjustment coefficient of the clamping force, a2 represents a second preset adjustment coefficient of the clamping force, A3 represents a third preset adjustment coefficient of the clamping force, and An represents An nth preset adjustment coefficient of the clamping force.
Further, the central control unit determines the clamping force adjusting coefficient according to the diameter of the cable to be prepared, sets the diameter of the cable to be prepared as d, then,
if D is not more than D1, the central control unit determines the clamping force adjusting coefficient alpha, alpha = A1;
if D1 < D ≦ D1, the central control unit determines the clamping force adjustment coefficient α, α = A2;
if D2 < D ≦ D3, the central control unit determines the clamping force adjustment coefficient α, α = A3;
if D (n-1) < D is less than or equal to Dn, the central control unit determines the clamping force adjusting coefficient alpha, alpha = An;
when the central control unit determines that the clamping force adjusting coefficient alpha takes the value Ai, i =1, 2, 3 … n is set, and the central control unit determines the adjusting parameter value k = Ai x (F/F0) + V/V0 of the cable.
Further, the central control unit calculates an adjusting parameter value k of the cable according to the determined clamping force adjusting coefficient alpha, adjusts the glue output of the extruder and the drawing speed of the drawing machine in the initially determined working parameters according to the determined adjusting parameter value k, sets a first threshold value of the adjusting parameter value of the cable as k1, sets a second threshold value of the adjusting parameter value of the cable as k2, sets the real-time glue output of the extruder as Jqs, and sets the real-time drawing speed of the drawing machine as Vs,
if k is less than or equal to k1, the central control unit adjusts the gum output of the extruder to be Jqs1, Jqs1=1.1 × Jqs, and the central control unit adjusts the drawing speed of the drawing machine to be Vs1, and Vs1=0.97 × Vs;
if k is more than k1 and less than or equal to k2, the central control unit does not adjust the working parameters of the extruding machine and the drawing machine;
if k is more than k2, the central control unit adjusts the glue output of the extruder to be Jqs1, Jqs1=0.95 × Jqs, and the central control unit adjusts the drawing speed of the drawing machine to be Vs1, and Vs1=1.05 × Vs.
Furthermore, the temperature of the cable before cooling is set to Tq, the temperature of the cable after cooling is set to Th, the temperature difference between the cable before cooling and after cooling is set to Tc, Tc = Tq-Th, a temperature reference value T0 is set during a detection period T, the real-time water spraying amount of the cooling unit is set to Lqs, the real-time temperature of water sprayed by the cooling unit is set to Lts, the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit according to the temperature difference between the cable before cooling and after cooling,
and if Tc is less than or equal to T0, the central control unit does not adjust the working parameters of the water spraying quantity and the water spraying temperature of the cooling unit.
Further, if Tc is more than T0, the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit according to the temperature difference of the cable before and after cooling and the adjustment parameter value of the cable,
if Tc is more than T0 and k is less than or equal to k1, the central control unit adjusts the water spraying amount of the cooling unit to be Lqs1, Lqs1=1.15 × Lqs, adjusts the temperature of the sprayed water of the cooling unit to be Lts1, and adjusts the temperature of the sprayed water of the cooling unit to be Lts1=0.85 × Lts;
if Tc is more than T0 and k1 is more than k and less than or equal to k2, the central control unit adjusts the water spraying amount of the cooling unit to be Lqs1, Lqs1=1.1 × Lqs, adjusts the temperature of the sprayed water of the cooling unit to be Lts1, and Lts1=0.9 × Lts;
if Tc > T0 and k > k2, the central control unit adjusts the water spray amount of the cooling unit to Lqs1, Lqs1=1.05 × Lqs, and adjusts the temperature of the water sprayed by the cooling unit to Lts1 and Lts1=0.95 × Lts.
Compared with the prior art, the method for processing the copper core mineral insulation fireproof cable has the advantages that the preparation parameter value of the cable is calculated through the type score and the diameter corresponding to the type of the cable to be prepared, the initial working parameter matrix group is determined according to the preparation parameter value, when the cable runs to the detection period according to the initially determined working parameter, the clamping plate carries out clamping force test on the cable and calculates the adjusting parameter value of the cable according to the wire drawing speed, the glue output quantity of the plastic extruding machine and the wire drawing speed of the wire drawing machine in the initially determined working parameter are adjusted according to the determined adjusting parameter value k, when the cooling unit is adjusted, the difference value of the cable temperature before the cooling unit and the cable temperature after the cooling unit is combined with the adjusting parameter value k of the cable to adjust the water spraying quantity and the water spraying temperature of the cooling unit in the initially determined working parameter, if the cable adjusting parameter value calculated by combining the clamping force of the thickness detection unit and the wire drawing speed in the current detection period is not within the preset range, the central control unit adjusts the working parameters in the preparation process, and the quality of the prepared cable is effectively improved.
Furthermore, the method and the device set a cable type matrix and a cable type scoring matrix, determine the type scoring of different cable types, and calculate the preparation parameter value through the cable type scoring and the diameter of the cable, thereby determining the initial working parameters of the prepared cable and further improving the quality of the prepared cable.
Particularly, the invention sets a working parameter matrix group, determines an adjusting parameter value of a cable by preparing an initial working parameter matrix group determined by the parameter value and running to a first detection period according to the initial working parameter value, sets a clamping force adjusting coefficient to adjust the clamping force, so that the central control unit determines different clamping forces for cables with different diameters, thereby reducing the error of the clamping force on the cables with different diameters, improving the accuracy of data and realizing more accurate adjustment of parameters in the preparation process.
Furthermore, the clamping force adjusting coefficients are determined through different diameters, and when the diameters of different cables are measured, the different clamping force adjusting coefficients are correspondingly determined to adjust errors, so that the calculated adjusting parameter values of the cables are more suitable for the cable preparation process prepared at present, and the quality of the prepared cables is further improved.
Particularly, the invention adjusts the glue output quantity and the wire drawing speed of the plastic extruding machine to different degrees according to different adjusting parameter values by setting the threshold value of the adjusting parameter value of the cable, so that the plastic extruding machine is more suitable for the production process, if the adjusting parameter value is small, the smaller the reaction force of the cable on the clamping plate is, and/or the wire drawing speed is too high, if the reaction force of the cable is small, it is indicated that the thickness of the cable produced is lower than the thickness required for the cable production, that the extruder may have a low gum yield or that the drawing speed of the drawing machine is too high, therefore, for the condition that the adjusting parameter value is small, the working parameters of the extruding machine and the wire drawing machine in the next period are adjusted by increasing the glue output of the extruding machine and simultaneously slowing down the wire drawing speed of the wire drawing machine, therefore, the quality of the cable prepared in the next detection period is improved, and the quality of the prepared cable is further improved.
Particularly, when the parameters of the cooling unit are adjusted, whether the temperature difference value of the cable before and after cooling is within a preset range is preferably considered, if so, the parameters of the cooling unit do not need to be adjusted, and if not, the central control unit adjusts the working parameters of the water spraying amount and the water spraying temperature of the cooling unit by combining the adjustment parameter values of the cable, so that the quality of the prepared cable is further improved.
Drawings
FIG. 1 is a schematic flow chart of a cable processing method according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a cooling device of a cooling unit according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 4 is a schematic diagram of the positional relationship between the circular hole and the annular groove in the cooling device of the cooling unit according to the embodiment of the invention.
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 principle 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 in a specific orientation, and be operated, 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, an embodiment of the present invention provides a method for processing a copper core mineral insulated fireproof cable, including: step one, calculating preparation parameter values according to the type and the diameter of a cable to be prepared, determining a working parameter matrix according to the preparation parameter values, and preprocessing a copper core of the cable according to the determined working parameters, wherein the preprocessing comprises wire drawing processing through a wire drawing machine, twisting and stranding processing through a stranding machine, wire core conductor de-hardening processing and wire core combination processing;
secondly, preparing an insulating layer of the pretreated cable copper core through an extruding machine;
step three, cooling the cable prepared in the step two by a cooling unit;
fourthly, detecting the cable processed by the cooling unit by a thickness detection unit 17;
step five, determining an adjusting parameter value of the cable according to the thickness detection result in the step four in combination with the wire drawing speed of the wire drawing machine, and adjusting the working parameter according to the adjusting parameter value until the preparation of the cable is completed;
referring to fig. 2-4, the cooling device of the cooling unit in the third step of the present embodiment includes a horizontal plate 1, supporting plates 2 vertically installed at the bottoms of the two ends of the horizontal plate 1, a receiving box 3 with an open top installed between the two supporting plates 2, a vertical tube 4 rotatably installed on the horizontal plate 1, vertical rods 5 fixed at the tops and bottoms of the horizontal plate 1, a horizontal plate 6 fixed at one end of the vertical rod 5, a wire guiding wheel 7 rotatably installed at one end of the horizontal plate 6, two wire guiding wheels 7 respectively located above and below the vertical tube 4, a circular plate 8 fixed in the vertical tube 4, a circular hole 9 and an annular groove 10 opened at the top of the circular plate 8, a horizontally installed conveying pipe 11 fixed between the bottom of the annular groove 10 and the circular hole 9, and a spray head connected to the conveying pipe 11 for spraying water in the conveying pipe 11 onto a cable to be cooled through the spray head, conveying screw 12 is installed to the 11 internal rotations of conveyer pipe, and one side of standpipe 4 is equipped with motor 13, and motor 13's output shaft is connected with conveying screw 12 transmission, and water tank 14 is installed at the top of diaphragm 1, installs water pump 15 on the water tank 14, and water pump 15 is connected with L pipe 16, and the tip of the one end of L pipe 16 is down, and the one end of L pipe 16 is located annular groove 10 directly over.
Specifically, in the embodiment of the present invention, the horizontal plate 6 is provided with a plurality of temperature detectors for detecting the temperature of the cable entering the cooling unit and the temperature of the cable leaving the cooling unit.
Specifically, in the embodiment of the present invention, a horizontally disposed driving shaft 20 is rotatably mounted in the annular groove 10, one end of the driving shaft 20 is in transmission connection with the conveying screw 12, the other end of the driving shaft 20 extends to the outside of the vertical pipe 4, the driving shaft 20 is in rotation connection with the vertical pipe 4 and the circular plate 8, and an output shaft of the motor 13 is in transmission connection with the driving shaft 20. The utility model discloses a motor, including standpipe 4, motor 13, motor, stand bar, standpipe 4, the board of placing of one side fixed mounting of standpipe 4 horizontal setting, motor 13 install on placing the board, place the bottom of board and be fixed with the bearing bar that the slope set up, the bottom and the standpipe 4 welding of bearing bar. The bottom of the receiving box 3 is provided with a drain pipe, and the drain pipe is provided with a valve.
Particularly, in the embodiment of the invention, the spray head can be set as a rotary spray head, and the omnibearing water spray cooling of the cable is realized through multi-angle rotation.
Specifically, in the embodiment of the present invention, a central control unit is connected to the drawing machine, the extruding machine, the cooling unit, and the thickness detection unit 17, respectively, and controls working parameters of the drawing machine, the extruding machine, the cooling unit, and the thickness detection unit 17, before a cable to be prepared is prepared, the central control unit calculates a preparation parameter value of the cable according to a type score and a diameter corresponding to a type of the cable to be prepared, and determines an initial working parameter matrix set according to the preparation parameter value.
Specifically, in the embodiment of the present invention, the central control unit obtains the type and the diameter of the cable to be prepared, sets the type of the cable to be prepared as Zi, sets the diameter of the cable to be prepared as Di, determines the preparation parameter value zb according to the type and the diameter of the cable to be prepared,
zb=Fi/F0+Di/D0
wherein zb represents a preparation parameter value of the cable to be prepared, Fi represents a category score corresponding to the category Zi of the cable to be prepared, Z0 represents a preset category score, Di represents the diameter of the cable to be prepared, and D0 represents a preset diameter.
Specifically, in the embodiment of the present invention, a cable type matrix Z (Z1, Z2, Z3 … Zn) is preset in the central control unit, where Z1 represents a first preset cable type, Z2 represents a second preset cable type, Z3 represents a third preset cable type, and Zn represents an nth preset cable type.
Specifically, in the embodiment of the present invention, the category of the cable may be classified according to a major category, or may be classified according to a minor category, for example, according to the type of the flexible mineral-insulated cable in the classification according to the mineral-insulated cable, including BBTZR/BBTRQ/BTRZ/BTLY/TTQ/BTTVQ/NG-a (BTLY)/RTTVZ/RTTYZ/RTTZ, or according to the classification according to the copper core copper sheath magnesium oxide-insulated cable, including tbtz, BTTQ, BTTVZ, and BTTVQ.
A category score matrix F (F1, F2 and F3 … Fn) is also preset in the central control unit, wherein F1 represents a first preset category score, F2 represents a second preset category score, F3 represents a third preset category score, and Fn represents an nth preset category score. The category scoring corresponding to the cable category can be performed according to the theoretical service time limit of the cable, can also be performed according to the comprehensive parameters of the cable, and can also be performed according to the flow carrying quantity value of the cable.
Specifically, in the embodiment of the present invention, the central control unit determines the category score of the cable according to the category correspondence of the cable, and when the category of the cable is Zi, the corresponding category score is Fi.
Specifically, in the embodiment of the present invention, preparation parameter values ZB (ZB 1, ZB2, ZB3 … ZBn) are preset in the central control unit, where ZB1 represents a first preset preparation parameter value, ZB2 represents a second preset preparation parameter value, ZB3 represents a third preset preparation parameter value, and ZBn represents an nth preset preparation parameter value.
Specifically, in the embodiment of the present invention, an operation parameter matrix group W (V, Jq, Lq, Lt, F) is further preset in the central control unit, wherein V represents a drawing speed of the drawing machine, Jq represents a gum discharge amount of the extruder, Lq represents a water spray amount of the cooling unit, Lt represents a temperature of water sprayed from the cooling unit, and F represents a clamping force of the thickness detection unit 17.
Specifically, in the embodiment of the present invention, i =1, 2, and 3 … n is set for the i-th operation parameter matrix Wi (Vi, Jqi, Lqi, Lti, Fi), where Vi denotes the i-th preset drawing speed of the drawing machine, Jqi denotes the i-th preset glue discharge amount of the extruder, Lqi denotes the i-th preset water spray amount of the cooling unit, Lti denotes the i-th preset temperature of the water sprayed from the cooling unit, and Fi denotes the i-th preset pinching force of the thickness detection unit 17.
Specifically, in the embodiment of the present invention, the wire drawing speed of the wire drawing machine is the same as the wire guiding speed of the wire guiding wheel 7 in the cooling unit, the cable extruded by the extruding machine is conveyed to the wire guiding wheel 7 below the vertical tube 4 under the action of the wire drawing machine, the cable is cooled by the cooling unit, the cable processed by the cooling unit is detected by the thickness detecting unit 17, and the adjustment parameter value of the cable is determined according to the detection result of the thickness detecting unit 17, so that the initially determined working parameter is adjusted.
Specifically, in the embodiment of the present invention, the central control unit determines the initial set of operating parameters W of the drawing machine, the extruding machine, the cooling unit and the thickness detection unit 17 according to the preparation parameter value zb
If ZB is less than or equal to ZB1, the central control unit determines that the initial working parameter is W1, selects V1 from W1 as the wire drawing speed of a wire drawing machine, selects Jq1 as the glue output of an extruding machine, selects Lq1 as the water spraying amount of a cooling unit, selects Lt1 as the temperature of water sprayed by the cooling unit, and selects F1 as the clamping force of a thickness detection unit 17;
if ZB1 is larger than ZB and is not larger than ZB2, the central control unit determines that the initial working parameter is a matrix group as W2, selects V2 from W2 as the drawing speed of a drawing machine, selects Jq2 as the glue output of an extruding machine, selects Lq2 as the water spraying amount of a cooling unit, selects Lt2 as the temperature of water sprayed by the cooling unit, and selects F2 as the clamping force of a thickness detection unit 17;
if ZB2 is larger than ZB and is not larger than ZB3, the central control unit determines that the initial working parameter is a matrix group as W3, selects V3 from W3 as the drawing speed of a drawing machine, selects Jq3 as the glue output of an extruding machine, selects Lq3 as the water spraying amount of a cooling unit, selects Lt3 as the temperature of water sprayed by the cooling unit, and selects F3 as the clamping force of a thickness detection unit 17;
if ZB (n-1) < ZB not more than ZBn, the central control unit determines the initial working parameter as a matrix group as Wn, selects Vn from Wn as the wire drawing speed of the wire drawing machine, selects Jqn as the glue output of the extruding machine, selects Lqn as the water spraying amount of the cooling unit, selects Ltn as the temperature of water sprayed by the cooling unit, and selects Fn as the clamping force of the thickness detection unit 17.
Specifically, in the embodiment of the invention, in the process of preparing the cable, firstly, the preparation parameter value is determined according to the type and the diameter of the cable to be prepared, so as to determine the operating parameter of the initial preparation, in the process of preparing the cable, the copper core is processed by the extruding machine to prepare the insulating layer, the cable processed by the extruding machine enters the cooling unit through the drawing machine to be cooled, when the cooling unit is used for cooling the cable, the cable passes through the wire guide wheel 7 positioned below the vertical pipe 4, passes through the vertical pipe 4 and the circular hole 9, passes through the wire guide wheel 7 positioned above the vertical pipe 4, conveys water in the water tank 14 into the annular groove through the water pump 15 and the L pipe 16, then the motor 13 drives the driving shaft 20 to rotate so that the conveying screw 12 rotates, so that the water is sprayed out of the spray head through the conveying pipe 11, and plays a role of pushing the water, make water spout from the shower nozzle and wash by water the cooling to the cable, realize making the water in the conveyer pipe 11 through rotatory nozzle simultaneously and rotate the water spray through rotatory nozzle to the realization carries out all-round water spray cooling to the cable, evenly cools off, improves processingquality, and the cooling water is used the back and is received recycle through receiving box 3, avoids extravagant.
Specifically, in the embodiment of the present invention, when the device operates according to the working parameters of the determined initial working parameter matrix set, the central control unit sets the detection period to T, the thickness detection unit 17 applies a clamping force to the cable passing through the clamping plate, the central control unit calculates an adjustment parameter value k of the cable according to the wire drawing speed of the wire drawing machine and the clamping force of the clamping plate in combination with a clamping force adjustment coefficient corresponding to the diameter of the cable to be prepared, and adjusts the glue output of the extruder and the wire drawing speed of the wire drawing machine in the initially determined working parameters according to the determined adjustment parameter value k; and the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit in the initially determined working parameters according to the combination of the difference value between the temperature of the cable before the cable passes through the cooling unit and the temperature of the cable after the cable passes through the cooling unit in the third step and the adjustment parameter value k of the cable.
Specifically, in the embodiment of the present invention, the central control unit is configured to prepare according to a determined initial working parameter matrix Wi, the thickness detection unit 17 applies a clamping force Fi to a cable passing through a clamping plate through the clamping plate, a detection period of the clamping plate is set to T, the central control unit determines an adjustment parameter value k of the cable according to a drawing speed of the drawing machine and the clamping force of the clamping plate,
k=α×(F/F0)+V/V0
where k denotes an adjustment parameter value, α denotes a clamping force adjustment coefficient, F denotes a clamping force of a clamping plate, F0 denotes a preset clamping force, V denotes a drawing speed of the drawing machine, and V0 denotes a preset speed.
Specifically, in the embodiment of the present invention, F0 may be determined according to the type of the clamp and the type of the stock cable, or V0 may be obtained by performing a plurality of tests in advance according to the clamping force of the clamp corresponding to the diameter of the cable with the minimum diameter to the distance of the thickness of the cable with the minimum diameter, for example, an average value of the drawing speed of one hundred or fifty times in advance.
Specifically, the embodiment of the invention adjusts the working parameters of the next detection period through the determined adjustment parameter value k in the current detection period, thereby improving the quality of the prepared cable.
Specifically, in the embodiment of the invention, a diameter matrix D and a clamping force adjusting coefficient matrix A of a cable are preset in the central control unit; a matrix D (D1, D2, D3 … Dn) of diameters for the cables, where D1 represents a first preset diameter of the cables, D2 represents a second preset diameter of the cables, D3 represents a third preset diameter of the cables, and Dn represents an nth preset diameter of the cables.
Specifically, in the embodiment of the present invention, for the clamping force adjustment coefficient matrix a (a 1, a2, A3 … An), a1 represents a first preset adjustment coefficient of the clamping force, a2 represents a second preset adjustment coefficient of the clamping force, A3 represents a third preset adjustment coefficient of the clamping force, and An represents An nth preset adjustment coefficient of the clamping force.
Specifically, in the embodiment of the present invention, the central control unit determines the clamping force adjustment coefficient according to the diameter of the cable to be prepared, and sets the diameter of the cable to be prepared as d, then,
if D is not more than D1, the central control unit determines the clamping force adjusting coefficient alpha, alpha = A1;
if D1 < D ≦ D1, the central control unit determines the clamping force adjustment coefficient α, α = A2;
if D2 < D ≦ D3, the central control unit determines the clamping force adjustment coefficient α, α = A3;
if D (n-1) < D is less than or equal to Dn, the central control unit determines the clamping force adjusting coefficient alpha, alpha = An;
when the central control unit determines that the clamping force adjusting coefficient alpha takes the value Ai, i =1, 2, 3 … n is set, and the central control unit determines the adjusting parameter value k = Ai x (F/F0) + V/V0 of the cable.
Specifically, according to the embodiment of the invention, the error value is larger, the diameter is smaller and the error value is smaller by different requirements of cables with different diameters on the pressure adjusting coefficient, and when the diameters of the cables are different, different clamping force adjusting coefficients are correspondingly determined to adjust the errors, so that the calculated adjusting parameter values of the cables are more suitable for the cable preparation process which is currently prepared.
Specifically, in the embodiment of the present invention, the central control unit calculates the adjustment parameter value k of the cable according to the determined clamping force adjustment coefficient α, and adjusts the glue output of the extruder and the drawing speed of the drawing machine in the initially determined working parameters according to the determined adjustment parameter value k, and if the first threshold value of the adjustment parameter value of the cable is set to k1, the second threshold value of the adjustment parameter value of the cable is set to k2, the real-time glue output of the extruder is set to Jqs, and the real-time drawing speed of the drawing machine is set to Vs,
if k is less than or equal to k1, the central control unit adjusts the gum output of the extruder to be Jqs1, Jqs1=1.1 × Jqs, and the central control unit adjusts the drawing speed of the drawing machine to be Vs1, and Vs1=0.97 × Vs;
if k is more than k1 and less than or equal to k2, the central control unit does not adjust the working parameters of the extruding machine and the drawing machine;
if k is more than k2, the central control unit adjusts the glue output of the extruder to be Jqs1, Jqs1=0.95 × Jqs, and the central control unit adjusts the drawing speed of the drawing machine to be Vs1, and Vs1=1.05 × Vs.
Specifically, in the embodiment of the invention, the temperature of the cable before cooling is set to Tq, the temperature of the cable after cooling is set to Th, the temperature difference between the cable before cooling and after cooling is set to Tc, Tc = Tq-Th, the temperature reference value T0 is set during the detection period T, the real-time water spraying amount of the cooling unit is set to Lqs, the real-time temperature of water sprayed by the cooling unit is set to Lts, the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit according to the temperature difference between the cable before cooling and after cooling,
and if Tc is less than or equal to T0, the central control unit does not adjust the working parameters of the water spraying quantity and the water spraying temperature of the cooling unit.
Specifically, in the embodiment of the invention, if Tc is greater than T0, the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit according to the temperature difference between the cable before and after cooling and the adjustment parameter value of the cable,
if Tc is more than T0 and k is less than or equal to k1, the central control unit adjusts the water spraying amount of the cooling unit to be Lqs1, Lqs1=1.15 × Lqs, adjusts the temperature of the sprayed water of the cooling unit to be Lts1, and adjusts the temperature of the sprayed water of the cooling unit to be Lts1=0.85 × Lts;
if Tc is more than T0 and k1 is more than k and less than or equal to k2, the central control unit adjusts the water spraying amount of the cooling unit to be Lqs1, Lqs1=1.1 × Lqs, adjusts the temperature of the sprayed water of the cooling unit to be Lts1, and Lts1=0.9 × Lts;
if Tc > T0 and k > k2, the central control unit adjusts the water spray amount of the cooling unit to Lqs1, Lqs1=1.05 × Lqs, and adjusts the temperature of the water sprayed by the cooling unit to Lts1 and Lts1=0.95 × Lts.
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 fall into the protection scope of the invention.
Claims (10)
1. A processing method of a copper core mineral insulation fireproof cable is characterized by comprising the following steps:
step one, calculating preparation parameter values according to the type and the diameter of a cable to be prepared, determining a working parameter matrix according to the preparation parameter values, and preprocessing a copper core of the cable according to the determined working parameters, wherein the preprocessing comprises wire drawing processing through a wire drawing machine, twisting and stranding processing through a stranding machine, wire core conductor de-hardening processing and wire core combination processing;
secondly, preparing an insulating layer of the pretreated cable copper core through an extruding machine;
step three, cooling the cable prepared in the step two by a cooling unit;
fourthly, detecting the cable processed by the cooling unit by a thickness detection unit;
step five, determining an adjusting parameter value of the cable according to the thickness detection result in the step four in combination with the wire drawing speed of the wire drawing machine, and adjusting the working parameter according to the adjusting parameter value until the preparation of the cable is completed;
the central control unit is respectively connected with the wire drawing machine, the plastic extruding machine, the cooling unit and the thickness detection unit and controls working parameters of the wire drawing machine, the plastic extruding machine, the cooling unit and the thickness detection unit, before the cable to be prepared is prepared, the central control unit calculates preparation parameter values of the cable according to the type grade and the diameter corresponding to the type of the cable to be prepared, and determines an initial working parameter matrix group according to the preparation parameter values;
the central control unit acquires the type and the diameter of the cable to be prepared, sets the type of the cable to be prepared as Zi and the diameter of the cable to be prepared as Di, determines a preparation parameter value zb according to the type and the diameter of the cable to be prepared,
zb=Fi/F0+Di/D0
zb represents a preparation parameter value of the cable to be prepared, Fi represents a category score corresponding to the category Zi of the cable to be prepared, Z0 represents a preset category score, Di represents the diameter of the cable to be prepared, and D0 represents a preset diameter;
when the device runs according to the working parameters of the determined initial working parameter matrix set, the central control unit sets a detection period to be T, the thickness detection unit applies clamping force to the cable passing through the clamping plate, the central control unit calculates an adjusting parameter value k of the cable according to the wire drawing speed of the wire drawing machine and the clamping force of the clamping plate and correspondingly determines a clamping force adjusting coefficient of the diameter of the cable to be prepared, and adjusts the glue output of the plastic extruding machine and the wire drawing speed of the wire drawing machine in the initially determined working parameters according to the determined adjusting parameter value k;
and the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit in the initially determined working parameters according to the combination of the difference value between the temperature of the cable before the cable passes through the cooling unit and the temperature of the cable after the cable passes through the cooling unit in the third step and the adjustment parameter value k of the cable.
2. The processing method of the copper core mineral insulation fireproof cable according to claim 1, wherein a cable type matrix Z (Z1, Z2, Z3 … Zn) is preset in the central control unit, wherein Z1 represents a first preset cable type, Z2 represents a second preset cable type, Z3 represents a third preset cable type, and Zn represents an nth preset cable type;
a category score matrix F (F1, F2 and F3 … Fn) is also preset in the central control unit, wherein F1 represents a first preset category score, F2 represents a second preset category score, F3 represents a third preset category score, and Fn represents an nth preset category score;
and the central control unit correspondingly determines the category score of the cable according to the category of the cable, and when the category of the cable is Zi, the corresponding category score is Fi.
3. The method for manufacturing a copper-core mineral-insulated fireproof cable according to claim 2, wherein preparation parameter values ZB (ZB 1, ZB2, ZB3 … ZBn) are preset in the central control unit, wherein ZB1 represents a first preset preparation parameter value, ZB2 represents a second preset preparation parameter value, ZB3 represents a third preset preparation parameter value, and ZBn represents an nth preset preparation parameter value;
an operating parameter matrix group W (V, Jq, Lq, Lt and F) is also preset in the central control unit, wherein V represents the drawing speed of the drawing machine, Jq represents the glue outlet amount of the extruding machine, Lq represents the water spraying amount of the cooling unit, Lt represents the temperature of water sprayed by the cooling unit, and F represents the clamping force of the thickness detection unit;
for the ith operating parameter matrix Wi (Vi, Jqi, Lqi, Lti, Fi), where Vi denotes the ith preset drawing speed of the drawing machine, Jqi denotes the ith preset glue discharge amount of the extruder, Lqi denotes the ith preset water spray amount of the cooling unit, Lti denotes the ith preset temperature of the water sprayed from the cooling unit, Fi denotes the ith preset clamping force of the thickness detection unit, i =1, 2, 3 … n is set.
4. The method for manufacturing a copper-core mineral-insulated fireproof cable according to claim 3, wherein the central control unit determines the initial set of operating parameters W of the drawing machine, the extruding machine, the cooling unit and the thickness detection unit according to the preparation parameter value zb,
if ZB is less than or equal to ZB1, the central control unit determines that the initial working parameter is W1, selects V1 from W1 as the wire drawing speed of a wire drawing machine, selects Jq1 as the glue output of an extruding machine, selects Lq1 as the water spraying amount of a cooling unit, selects Lt1 as the temperature of water sprayed by the cooling unit, and selects F1 as the clamping force of a thickness detection unit;
if ZB1 is larger than ZB and is not larger than ZB2, the central control unit determines that the initial working parameter is a matrix group as W2, selects V2 from W2 as the wire drawing speed of a wire drawing machine, selects Jq2 as the glue output of an extruding machine, selects Lq2 as the water spraying amount of a cooling unit, selects Lt2 as the temperature of water sprayed by the cooling unit, and selects F2 as the clamping force of a thickness detection unit;
if ZB2 is larger than ZB and is not larger than ZB3, the central control unit determines that the initial working parameter is a matrix group as W3, selects V3 from W3 as the wire drawing speed of a wire drawing machine, selects Jq3 as the glue output of an extruding machine, selects Lq3 as the water spraying amount of a cooling unit, selects Lt3 as the temperature of water sprayed by the cooling unit, and selects F3 as the clamping force of a thickness detection unit;
if ZB (n-1) < ZB not more than ZBn, the central control unit determines the initial working parameter as a matrix group as Wn, selects Vn from Wn as the wire drawing speed of the wire drawing machine, selects Jqn as the glue output of the extruding machine, selects Lqn as the water spraying amount of the cooling unit, selects Ltn as the temperature of water sprayed by the cooling unit, and selects Fn as the clamping force of the thickness detection unit.
5. The processing method of the copper core mineral insulation fireproof cable according to claim 4, wherein the central control unit is prepared according to a determined initial working parameter matrix Wi, the thickness detection unit applies a clamping force Fi to the cable passing through the clamping plate, the detection period of the clamping plate is set to be T, the central control unit determines an adjusting parameter value k of the cable according to the drawing speed of the drawing machine and the clamping force of the clamping plate,
k=α×(F/F0)+V/V0
where k denotes an adjustment parameter value, α denotes a clamping force adjustment coefficient, F denotes a clamping force of a clamping plate, F0 denotes a preset clamping force, V denotes a drawing speed of the drawing machine, and V0 denotes a preset speed.
6. The processing method of the copper core mineral insulation fireproof cable according to claim 5, wherein a diameter matrix D and a clamping force adjusting coefficient matrix A of the cable are preset in the central control unit;
a matrix D (D1, D2, D3 … Dn) of diameters for the cables, wherein D1 represents a first preset diameter of a cable, D2 represents a second preset diameter of a cable, D3 represents a third preset diameter of a cable, and Dn represents an nth preset diameter of a cable;
for the clamping force adjustment coefficient matrix a (a 1, a2, A3 … An), wherein a1 represents a first preset adjustment coefficient of the clamping force, a2 represents a second preset adjustment coefficient of the clamping force, A3 represents a third preset adjustment coefficient of the clamping force, and An represents An nth preset adjustment coefficient of the clamping force.
7. The processing method of the copper core mineral insulation fireproof cable according to claim 6, wherein the central control unit determines the clamping force adjusting coefficient according to the diameter of the cable to be prepared, and if the diameter of the cable to be prepared is set as d,
if D is not more than D1, the central control unit determines the clamping force adjusting coefficient alpha, alpha = A1;
if D1 < D ≦ D1, the central control unit determines the clamping force adjustment coefficient α, α = A2;
if D2 < D ≦ D3, the central control unit determines the clamping force adjustment coefficient α, α = A3;
if D (n-1) < D is less than or equal to Dn, the central control unit determines the clamping force adjusting coefficient alpha, alpha = An;
when the central control unit determines that the clamping force adjusting coefficient alpha takes the value Ai, i =1, 2, 3 … n is set, and the central control unit determines the adjusting parameter value k = Ai x (F/F0) + V/V0 of the cable.
8. The processing method of the copper core mineral insulation fireproof cable according to claim 7, wherein the central control unit calculates an adjusting parameter value k of the cable according to the determined clamping force adjusting coefficient α, and adjusts the glue output of the extruder and the drawing speed of the drawing machine in the initially determined working parameters according to the determined adjusting parameter value k, wherein a first threshold value of the adjusting parameter value of the cable is set as k1, a second threshold value of the adjusting parameter value of the cable is set as k2, a real-time glue output of the extruder is set as Jqs, and a real-time drawing speed of the drawing machine is set as Vs,
if k is less than or equal to k1, the central control unit adjusts the gum output of the extruder to be Jqs1, Jqs1=1.1 × Jqs, and the central control unit adjusts the drawing speed of the drawing machine to be Vs1, and Vs1=0.97 × Vs;
if k is more than k1 and less than or equal to k2, the central control unit does not adjust the working parameters of the extruding machine and the drawing machine;
if k is more than k2, the central control unit adjusts the glue output of the extruder to be Jqs1, Jqs1=0.95 × Jqs, and the central control unit adjusts the drawing speed of the drawing machine to be Vs1, and Vs1=1.05 × Vs.
9. The method for processing the copper-core mineral-insulated fireproof cable according to claim 8, wherein the temperature of the cable before cooling is Tq, the temperature of the cable after cooling is Th, the temperature difference between the cable before and after cooling is Tc, Tc = Tq-Th, the temperature reference value T0 is set during the detection period T, the real-time water spraying amount of the cooling unit is Lqs, the real-time temperature of the water sprayed by the cooling unit is Lts, the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit according to the temperature difference between the cable before and after cooling,
and if Tc is less than or equal to T0, the central control unit does not adjust the working parameters of the water spraying quantity and the water spraying temperature of the cooling unit.
10. The method for processing the copper core mineral insulation fireproof cable according to claim 9, wherein if Tc is more than T0, the central control unit adjusts the water spraying amount and the water spraying temperature of the cooling unit according to the temperature difference of the cable before and after cooling and the adjustment parameter value of the cable,
if Tc is more than T0 and k is less than or equal to k1, the central control unit adjusts the water spraying amount of the cooling unit to be Lqs1, Lqs1=1.15 × Lqs, adjusts the temperature of the sprayed water of the cooling unit to be Lts1, and adjusts the temperature of the sprayed water of the cooling unit to be Lts1=0.85 × Lts;
if Tc is more than T0 and k1 is more than k and less than or equal to k2, the central control unit adjusts the water spraying amount of the cooling unit to be Lqs1, Lqs1=1.1 × Lqs, adjusts the temperature of the sprayed water of the cooling unit to be Lts1, and Lts1=0.9 × Lts;
if Tc > T0 and k > k2, the central control unit adjusts the water spray amount of the cooling unit to Lqs1, Lqs1=1.05 × Lqs, and adjusts the temperature of the water sprayed by the cooling unit to Lts1 and Lts1=0.95 × Lts.
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Application publication date: 20210511 |