CN102290151A - High-voltage cable cross-linking device - Google Patents
High-voltage cable cross-linking device Download PDFInfo
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- CN102290151A CN102290151A CN2011102587717A CN201110258771A CN102290151A CN 102290151 A CN102290151 A CN 102290151A CN 2011102587717 A CN2011102587717 A CN 2011102587717A CN 201110258771 A CN201110258771 A CN 201110258771A CN 102290151 A CN102290151 A CN 102290151A
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Abstract
The invention discloses a high-voltage cable cross-linking device, which comprises: nitrogen gas jar, first valve unit, closed pipeline, pressure sensor, heat exchanger, circulating fan, controller, a plurality of temperature sensor and a plurality of pneumatic ball valve. The high-voltage cable cross-linking device disclosed by the invention detects the pressure of nitrogen in a closed pipeline in real time through the pressure sensor, adjusts the state of the electric regulating valve according to the comparison result of the detected pressure value and the preset pressure value, realizes the automatic control of the nitrogen pressure, simplifies the operation, and realizes the cooling of the cross-linked cable through low-temperature nitrogen without the aid of a water cooling process, thereby avoiding the water tree phenomenon which is easily generated in the water cooling process and improving the quality of the cross-linked cable.
Description
Technical field
The invention belongs to the cable processing technique field, relate in particular to a kind of high-tension cable crosslinking apparatus.
Background technology
Along with crosslinked cable has appearred in the development of technology, crosslinked cable has obtained extensive use because of it has easy installation, good in thermal property, permission working temperature height, transmission capacity is big, reliability is high advantage.The technology mode that cable industry is produced crosslinked cable is divided three classes i.e. dry method chemical crosslinking, warm water crosslinking and physical crosslinking.Wherein, in the process that adopts dry method chemical crosslinking explained hereafter crosslinked cable, after core being finished the extruding of conductor shield-insulating barrier-insulation screen, need finish cross-linking process by the sealed tube that is full of high temperature, high pressure nitrogen equably continuously.
At present, the cable crosslinking apparatus of using in the employing dry method chemical crosslinking explained hereafter crosslinked cable process comprises nitrogen pot 11, manual pressure-reducing valve group 12, last sealer 13, pipeline 14, following sealer 15, water tank 16, centrifugal pump 17, check valve set 18, differential pressure jar 19 and control valve group 110 as shown in Figure 1.Wherein, last sealer 13, following sealer 15 and pipeline 14 are formed closing pipe lines, the perpendicular to the ground or near normal setting of closing pipe line.The pressure of the nitrogen in the nitrogen pot 11 is 2.5MPa, nitrogen from nitrogen pot 11 is adjusted to 1MPa through manual pressure-reducing valve group 12, air inlet by last sealer 13 enters in the pipeline 14 afterwards, centrifugal pump 17 draws water from water tank 16 simultaneously, afterwards through check valve set 18 from the water inlet filling line 14 of following sealer 15, the latter half of pipeline 14 is that water, the first half are nitrogen.The core that is enclosed with conductor shield, insulating barrier and insulation screen enters closed conduct from the upper end, in nitrogen, finish cross-linking process, form crosslinked cable, crosslinked cable cools off at the water that is arranged in pipeline the latter half afterwards, and draw the lower end from closed conduct under the traction of hauling machine at last.
In differential pressure jar 19, be provided with the turnover panel liquid level gauge, can control water level in the differential pressure jar 19 by the turnover panel liquid level gauge, when being higher than on the turnover panel liquid level gauge, the water level in the differential pressure jar 19 prescribes a time limit, pneumatic ball valve in the control valve group 110 is opened, water in the differential pressure jar 19 flows back to water tank 16, water level in differential pressure jar 19 is lower than under the turnover panel liquid level gauge prescribes a time limit, and the pneumatic ball valve in the control valve group 110 is closed, and comes the aqueous vapor balance in the control piper 14 and so forth.When adjusting the bound water level of turnover panel liquid level gauge, just can adjust the water level in the differential pressure jar 19.
But above-mentioned crosslinking apparatus has following shortcoming: the process of adjusting nitrogen pressure in the closing pipe line is the manual adjustment process, operation inconvenience; And crosslinked cable is by water-cooled process cooling, and when producing high pressure or ultra-high voltage cross-linking cable, water tree phenomenon very easily takes place in the water-cooled process for this high pressure or ultra-high voltage cross-linking cable, reduces the quality of crosslinked cable.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of high-tension cable crosslinking apparatus, can detect nitrogen gas pressure in the closed conduct in real time, and according to detected force value adjustment intake process, realization simplifies the operation to the automatic control of nitrogen pressure in the closed conduct, by means of low temperature nitrogen crosslinked cable is cooled off simultaneously, the water of avoiding very easily producing in the water-cooled process is set phenomenon, improves the quality of crosslinked cable.
For achieving the above object, the invention provides following technical scheme:
A kind of high-tension cable crosslinking apparatus comprises: nitrogen pot, the first control valve group, closed conduct, pressure sensor, heat exchanger, circulating fan, controller, a plurality of temperature sensor and a plurality of pneumatic ball valve;
Described nitrogen pot is used to store nitrogen;
Described closed conduct two ends are separately installed with the sealer that can hold the cable turnover, the top of described closed conduct is that heating tube, bottom are cooling water pipe, described heating tube is provided with an air inlet and at least one gas outlet, and described cooling water pipe is provided with an air inlet and at least one gas outlet;
Described temperature sensor is arranged at respectively on described heating tube and the cooling water pipe;
Described pressure sensor is arranged on the described heating tube;
The gas outlet of described heating tube and cooling water pipe is connected to the air inlet of described heat exchanger respectively by outlet pipe, the gas outlet of described heat exchanger is connected to described circulating fan;
Described circulating fan is connected in the air inlet of described cooling water pipe by admission line;
On the outlet pipe between the gas outlet of described heating tube and the described heat exchanger, be respectively arranged with described pneumatic ball valve on the gas outlet of described cooling water pipe and the outlet pipe between the described heat exchanger and on the air inlet of described cooling water pipe and the admission line between the described circulating fan;
The described first control valve group is arranged on the pipeline of the air inlet that connects described nitrogen pot and described heating tube, and the described first control valve group comprises electric control valve;
Described controller is connected with the pneumatic actuator of described temperature sensor, described pressure sensor, a plurality of described pneumatic ball valves and the electric operator of described electric control valve respectively, adjust the running status of a plurality of described pneumatic ball valves and electric control valve, nitrogen gas pressure and temperature in the control closed conduct according to the force value of the temperature value of described temperature sensor collection and described pressure sensor collection.
Preferably, in above-mentioned high-tension cable crosslinking apparatus, further comprise:
Wash the nitrogen pipe;
The gas outlet and described gas outlet and the described blowdown pipe of washing the air inlet of nitrogen pipe of washing the air inlet of nitrogen pipe and/or being connected described cooling water pipe that connect described heating tube;
The sewage well that is connected with the described sewage draining exit of washing the nitrogen pipe;
First emptying device that is connected with the described exhaust outlet of washing the nitrogen pipe by blast pipe;
Be arranged at the pneumatic ball valve on described blowdown pipe and the described blast pipe, the pneumatic actuator of described pneumatic ball valve is connected with described controller, and described controller control is positioned at the pneumatic ball valve time opening on described blowdown pipe and the blast pipe.
Preferably, in above-mentioned high-tension cable crosslinking apparatus, the described first control valve group comprises:
Be connected in first manual ball valve, electric control valve and second manual ball valve between the air inlet of described nitrogen pot and described heating tube successively;
Air inlet, the gas outlet that the 3rd manual ball valve, the air inlet of described the 3rd manual ball valve are connected to described first manual ball valve is connected to the gas outlet of described second manual ball valve.
Preferably, in above-mentioned high-tension cable crosslinking apparatus, further comprise the second control valve group;
The described second control valve group comprises the 4th manual ball valve, pressure-reducing valve, the 5th manual ball valve and the 6th manual ball valve, described the 4th manual ball valve, pressure-reducing valve and the 5th manual ball valve are connected successively, the air inlet of described the 4th manual ball valve and the 6th manual ball valve is connected to described nitrogen pot, and the gas outlet of described the 5th manual ball valve and the 6th manual ball valve is connected to the gas outlet of described second manual ball valve.
Preferably, in above-mentioned high-tension cable crosslinking apparatus, further comprise the 3rd control valve group;
Described the 3rd control valve group comprises the 7th manual ball valve, the 8th manual ball valve, safety valve, the pneumatic ball valve and second emptying device, the air inlet of described the 7th manual ball valve is connected to the gas outlet of described second manual ball valve, described the 8th manual ball valve, the air inlet of safety valve and pneumatic ball valve is connected to the gas outlet of described the 7th manual ball valve respectively, described the 8th manual ball valve, the gas outlet of safety valve and pneumatic ball valve is connected to described second emptying device, shown in the pneumatic actuator of pneumatic ball valve be connected pneumatic ball valve time opening shown in the described controller control with described controller.
Preferably, in above-mentioned high-tension cable crosslinking apparatus, described heating tube comprises pipeline, is arranged at the copper bar or the aluminium row in the described pipeline outside, arranges the electric heating system that is connected with described copper bar or aluminium.
Preferably, in above-mentioned high-tension cable crosslinking apparatus, described cooling water pipe is the U-shaped structure.
This shows, beneficial effect of the present invention is: high-tension cable crosslinking apparatus disclosed by the invention, be positioned at the closed conduct nitrogen gas pressure by pressure sensor detection in real time, and adjust the state of electric control valve according to the comparison result of detected pressures value and preset pressure value, realization is to the automatic control of nitrogen pressure, simplify the operation, and the cooling to crosslinked cable realizes by low temperature nitrogen, no longer by means of the water-cooled process, the water of having avoided thus very easily producing in the water-cooled process is set phenomenon, has improved the quality of crosslinked cable.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing cable crosslinking apparatus;
Fig. 2 is the structural representation of a kind of high-tension cable crosslinking apparatus disclosed by the invention;
Fig. 3 is the structure for amplifying schematic diagram of heating tube among Fig. 2;
Fig. 4 is the structural representation of another kind of high-tension cable crosslinking apparatus disclosed by the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The invention discloses a kind of high-tension cable crosslinking apparatus, can detect nitrogen gas pressure in the closed conduct in real time, and according to detected force value adjustment intake process, realization is to the automatic control of nitrogen pressure in the closed conduct, simplify the operation, by means of low temperature nitrogen crosslinked cable is cooled off simultaneously, the water of avoiding very easily producing in the water-cooled process is set phenomenon, improves the quality of crosslinked cable.
Referring to Fig. 2, Fig. 2 is the structural representation of a kind of high-tension cable crosslinking apparatus disclosed by the invention.Comprise nitrogen pot 21, the first control valve group 22, closed conduct 23, pressure sensor 24, heat exchanger 25, circulating fan 26, controller (not shown), temperature sensor 271 and 272 and pneumatic ball valve 281,282,283 and 284.
Wherein, nitrogen pot 21 is used to store nitrogen, the air inlet of this nitrogen pot 21 can directly be connected with the nitrogen production device, and the nitrogen that the nitrogen production device produces is directly sent into nitrogen pot 21 and stored, and also can adopt other means of transportation that nitrogen is sent into nitrogen pot 21 storages.
Closed conduct 23 two ends are separately installed with the sealer (not indicating among the figure) that can hold the cable turnover, the top of closed conduct 23 is that heating tube 231, bottom are cooling water pipe 232, heating tube 231 is provided with temperature sensor 271 and pressure sensor 24, and cooling water pipe 232 is provided with temperature sensor 272.Be provided with air inlet 2311, first gas outlet 2312 and second gas outlet 2313 at heating tube 231, cooling water pipe 232 is provided with air inlet 2321 and gas outlet 2322.It is to be noted, an air inlet 2311 and two gas outlets 2312,2313 are set on heating tube 231, an air inlet 2321 and a gas outlet 2322 are set on cooling water pipe 232, only be an embodiment disclosed by the invention, rather than whole embodiment, the present invention does not limit the air inlet of setting on heating tube 231 and the cooling water pipe 232 and the quantity of gas outlet.
Be positioned at first gas outlet 2312 on the heating tube 231 is connected to heat exchanger 25 by outlet pipe 101 air inlet, be positioned at second gas outlet 2313 on the heating tube 231 is connected to heat exchanger 25 by outlet pipe 102 air inlet, be positioned at gas outlet on the cooling water pipe 232 is connected to heat exchanger 25 by outlet pipe 103 air inlet, the gas outlet of heat exchanger 25 is connected to circulating fan 26, and circulating fan 26 is connected to the air inlet of cooling water pipe 232 by admission line 104.
The gas outlet 2312 of heating tube 231 and the outlet pipe 101 between the heat exchanger 25 are provided with pneumatic ball valve 281, the gas outlet 2313 of heating tube 231 and the outlet pipe 102 between the heat exchanger 25 are provided with pneumatic ball valve 282, the gas outlet 2322 of cooling water pipe 232 and the outlet pipe 103 between the heat exchanger 25 are provided with pneumatic ball valve 283, and the air inlet 2321 of cooling water pipe 232 and the admission line 104 between the circulating fan 26 are provided with pneumatic ball valve 284.
The first control valve group 22 is arranged on the pipeline (not indicating among the figure) of the air inlet 2311 that connects nitrogen pot 21 and heating tube 231.Comprise electric control valve 222 in the first control valve group 22.
Controller is connected with 284 the pneumatic actuator and the electric operator of electric control valve 222 with temperature sensor 271 and 272, pressure sensor 24, a plurality of pneumatic ball valve 281,282,283 respectively, controller receives the temperature value of temperature sensor 271,272 collections and the force value that pressure sensor 24 is gathered, and adjust the running status of a plurality of pneumatic ball valves and electric control valve, nitrogen gas pressure and temperature in the control closed conduct in view of the above.
Running to cable crosslinking apparatus shown in Figure 2 describes below.
The nitrogen that is stored in the nitrogen pot 21 enters in the closed conduct 23 by the first control valve group 22 and corresponding pipeline, and 231 pairs of nitrogen wherein of heating tube heat, for the CABLE MATERIALS that is wrapped in the core outside provides the environment that cross-linking reaction takes place.The core that is enclosed with CABLE MATERIALS enters from the sealer that is connected in heating tube 231 1 ends, and core and CABLE MATERIALS cross-linking reaction take place in heating tube 231 form crosslinked cable, and move to cooling water pipe 232 under the traction of hauling machine.Nitrogen temperature in the cooling water pipe 232 is lower, and cooling is gradually finally shifted out from the sealer that is connected in cooling water pipe 232 1 ends, and be wound on the take-up reel in the process that crosslinked cable moves in cooling water pipe 232.
In the normal startup procedure of upright tower line, the pressure sensor 24 that is arranged on the heating tube 231 detects nitrogen gas pressure in the closed conduct 23 in real time, and detected force value is transferred to controller.After controller receives the detected pressures value, itself and preset pressure upper and lower bound are compared, generate control signal corresponding according to comparison result, and be sent to the electric operator of electric control valve 222 in the first control valve group 22, the operation of control electric control valve 222.Concrete, when the detected pressures value greater than preset pressure in limited time, control electric control valve 222 cuts out, and stops to closing pipe line 23 air inlets; When the detected pressures value less than preset pressure under in limited time, control electric control valve 222 is opened, to closing pipe line 23 air inlets; When the detected pressures value is between the preset pressure upper limit and preset pressure lower limit, do not operate, maintain the statusquo.
Simultaneously, be arranged at temperature sensor 271 and the temperature sensor 272 that is arranged on the cooling water pipe 232 on the heating tube 231, detect the temperature of nitrogen in heating tube 231 and the cooling water pipe 232 in real time, and detected temperature value is transferred to controller.After controller receives the detected temperatures value, itself and preset temperature upper and lower bound are compared, generate control signal corresponding according to comparison result, and be sent to the pneumatic actuator of controlling pneumatic ball valve 281,282,283 and 284, control the operation of pneumatic ball valve 281,282,283 and 284.Concrete, be higher than when the detected temperatures value of temperature sensor 271 output on the preset temperature of heating tube in limited time, control pneumatic ball valve 281,282,283 and 284 is opened simultaneously, the nitrogen that is arranged in heating tube 231 and cooling water pipe 232 enters heat exchanger 25 by outlet pipe 101,102 and 103 and lowers the temperature, at last under the effect of circulating fan 26, enter cooling water pipe 232 from air inlet pipeline 104, because the nitrogen of output is normal temperature from nitrogen pot 21, therefore can reduce the temperature of nitrogen in the heating tube 231 fast; The preset temperature that is lower than heating tube when the detected temperatures value of temperature sensor 271 output down in limited time, control heating tube 231 heats, and improves the temperature of the nitrogen that is arranged in heating tube 231; When the detected temperatures value of temperature sensor 271 output is between the preset temperature lower limit of heating tube and the preset temperature upper limit, do not operate, maintain the statusquo.
In addition, be higher than when the detected temperatures value of temperature sensor 272 output on the preset temperature of cooling water pipe in limited time, control starts ball valve 283 and 284 and opens simultaneously, the nitrogen that is arranged in cooling water pipe 232 enters heat exchanger 25 by outlet pipe 103 and lowers the temperature, at last under the effect of circulating fan 26, enter cooling water pipe 232, thereby reduce the temperature that is positioned at cooling water pipe 232 nitrogen from air inlet pipeline 104; The preset temperature that is lower than cooling water pipe when the detected temperatures value of temperature sensor 272 output down in limited time, control starts ball valve 283 and 284 closes simultaneously, the temperature of nitrogen can raise in the cooling procedure of crosslinked cable gradually in the cooling water pipe 232.
When upright tower line has just stopped, after controller receives stop sign, control pneumatic ball valve 281,282,283 and 284 is opened simultaneously, the nitrogen that is arranged in heating tube 231 and cooling water pipe 232 enters heat exchanger 25 by outlet pipe 101,102 and 103 and lowers the temperature, at last under the effect of circulating fan 26, enter cooling water pipe 232 from air inlet pipeline 104, when the temperature of nitrogen was lower than 150 ℃ in detecting closed conduct 23, control pneumatic ball valve 281,282,283 and 284 was closed simultaneously.
The above-mentioned disclosed high-tension cable crosslinking apparatus of the present invention, be positioned at the closed conduct nitrogen gas pressure by pressure sensor detection in real time, and adjust the state of electric control valve according to the comparison result of detected pressures value and preset pressure value, realization is to the automatic control of nitrogen pressure, simplify the operation, and the cooling of crosslinked cable is realized by low temperature nitrogen, no longer by means of the water-cooled process, the water of having avoided thus very easily producing in the water-cooled process is set phenomenon, has improved the quality of crosslinked cable.
Heating tube in the high-tension cable crosslinking apparatus disclosed by the invention has multiple implementation, only describes with regard to a kind of below.
Referring to Fig. 3, Fig. 3 is the structure for amplifying schematic diagram of heating tube among Fig. 2.This heating tube comprises: pipeline 31, copper bar 32 and electric heating system.
Wherein, copper bar 32 is arranged at the outside of pipeline 31, and the two ends of copper bar 32 are connected with electrode 33 in the electric heating system respectively, is located at the positive pole and the negative pole that are connected to power supply in two electrodes 33 at copper bar 32 two ends respectively.When energising, there is electric current to flow through copper bar 32, directly give pipeline 31 heating, pipeline is equivalent to resistance.In the enforcement, also can adopt aluminium row or other metallic conductors to replace copper bar 32.
Need to prove, compare that cooling water pipe only comprises a pipeline, and the pipeline in the heating tube can be the same with pipeline in the cooling water pipe with heating tube.
In addition, cooling water pipe can be set to the U-shaped structure, promptly as shown in Figure 2.At this moment, the length of cooling water pipe does not change, and has reduced its height, and the height of thirty years of age tower and the height of closed conduct are closely related, therefore can suitably reduce the height of upright tower after the height of closed conduct reduces.
In the cross-linking reaction process, can produce crosslinked accessory substance, after high-tension cable crosslinking apparatus shown in Figure 2 long-time running, can influence subsequent reactions at a large amount of crosslinked accessory substance of closed conduct accumulated inside.Therefore the open another kind of the present invention can be eliminated the high-tension cable crosslinking apparatus of crosslinked accessory substance.This high-tension cable crosslinking apparatus further is provided with: wash the nitrogen pipe; The gas outlet that connects heating tube and the air inlet of washing the nitrogen pipe and/or be connected the gas outlet of cooling water pipe and wash the blowdown pipe of the air inlet of nitrogen pipe; The sewage well that is connected with the sewage draining exit of washing the nitrogen pipe; First emptying device that is connected with the exhaust outlet of washing the nitrogen pipe by blast pipe; Be arranged at the pneumatic ball valve on blowdown pipe and the blast pipe, the pneumatic actuator of these a plurality of pneumatic ball valves is connected with controller, and the controller may command is positioned at the pneumatic ball valve time opening on blowdown pipe and the blast pipe.
Describe below in conjunction with specific embodiment.
See also Fig. 4, Fig. 4 is the structural representation of another kind of high-tension cable crosslinking apparatus disclosed by the invention.Only just describe with the difference part of high-tension cable crosslinking apparatus shown in Figure 2.In high-tension cable crosslinking apparatus shown in Figure 4, further be provided with and wash nitrogen pipe 29, blowdown pipe (not indicating among the figure), sewage well 210, blast pipe (not indicating among the figure), first emptying device 211, pneumatic ball valve 285,286,287,288 and 289.
The exhaust outlet of washing nitrogen pipe 29 is connected to first emptying device 211 by blast pipe, and the sewage draining exit of washing nitrogen pipe 29 is connected to sewage well 210.Simultaneously, air inlet that connects pneumatic ball valve 281 and the blowdown pipe of washing the air inlet of nitrogen pipe 29 are set, air inlet that connects heat exchanger 25 and the blowdown pipe of washing the air inlet of nitrogen pipe 29 are set, gas outlet that connects heat exchanger 25 and the blowdown pipe of washing the air inlet of nitrogen pipe 29 are set, gas outlet that connects circulating fan 26 and the blowdown pipe of washing the air inlet of nitrogen pipe 29 are set, being connected between the gas outlet 2312,2313 of setting up heating tube 231 and the air inlet of washing nitrogen pipe 29, and being connected between the gas outlet 2322 of setting up cooling water pipe 232 and the air inlet of washing nitrogen pipe 29.Pneumatic ball valve 285,286,287 and 288 is arranged at respectively on each blowdown pipe, and pneumatic ball valve 289 is arranged on the blast pipe, and the pneumatic actuator of each pneumatic ball valve is connected with controller respectively.
Controller control pneumatic ball valve 285,286,287 and 288 is opened in turn, nitrogen in the closed conduct 23 is discharged into by each blowdown pipe and washes in the nitrogen pipe 29, the water of washing nitrogen pipe 29 bottoms is with crosslinked accessory substance dilution dissolving, regularly be discharged in the sewage well 210, and the nitrogen of having removed crosslinked accessory substance regularly is disposed to second emptying device 211 by the exhaust outlet of washing nitrogen pipe 29 tops.
In above-mentioned disclosed each high-tension cable crosslinking apparatus, the first control valve group 22 can only comprise electric control valve 222, and the air inlet of this electric control valve 222 is connected to the air inlet 2311 that nitrogen pot 21, gas outlet are connected to heating tube 231.
Preferably, the first adjuster valve group 22 can also comprise: first manual ball valve 221, electric control valve 222, second manual ball valve 223 and the 3rd manual ball valve 224, and as Fig. 2 and shown in Figure 4.Wherein, first manual ball valve 221, electric control valve 222 and second manual ball valve 223 are connected between the air inlet 2311 of nitrogen pot 21 and heating tube 231 successively, and air inlet, the gas outlet that the air inlet of the 3rd manual ball valve 224 is connected to first manual ball valve 221 is connected to the gas outlet of described second manual ball valve 223.
Two gas passages between nitrogen pot 21 and closed conduct 23, have been formed, when first manual ball valve 221, electric control valve 222 and second manual ball valve 223 break down, can also be positioned at the nitrogen gas pressure of closed conduct 23 by the 3rd manual ball valve 224 manual adjustments, improve the stability of cable crosslinking apparatus.
In addition, the second control valve group 213 (as shown in Figure 4) can also further be set in the cable crosslinking apparatus.The second control valve group 213 comprises the 4th manual ball valve 2131, pressure-reducing valve 2132, the 5th manual ball valve 2133 and the 6th manual ball valve 2134.Wherein, the 4th manual ball valve 2131, pressure-reducing valve 2132 and the 5th manual ball valve 2133 are connected successively, the gas outlet that the air inlet of the 4th manual ball valve 2131 and the 6th manual ball valve 2134 is connected to nitrogen pot 21, the five manual ball valves 2133 and the 6th manual ball valve 2134 is connected to the gas outlet of second manual ball valve 223.
By the second control valve group 213 is set, further between nitrogen pot 21 and closed conduct 23, increased by two gas passages, further improved the stability of high-tension cable crosslinking apparatus.
Preferably, the 3rd control valve group 214 (as shown in Figure 4) can also further be set in the crosslinked Electricity Federation of cable.The 3rd control valve group 214 comprises the 7th manual ball valve 2141, the 8th manual ball valve 2142, safety valve 2143, pneumatic ball valve 2144 and second emptying device 2145.Wherein, the air inlet of the 7th manual ball valve 2141 is connected to the gas outlet of second manual ball valve 223, the air inlet of the 8th manual ball valve 2142, safety valve 2143 and pneumatic ball valve 2144 is connected to the gas outlet of the 7th manual ball valve 2141 respectively, the gas outlet of the 8th manual ball valve 2142, safety valve 2143 and pneumatic ball valve 2144 is connected to second emptying device 2145, the pneumatic actuator of pneumatic ball valve 2144 is connected with controller, controller control pneumatic ball valve 2144 time openings.
The 3rd control valve group 214 is set, can carries out the pressure security protection to pipeline on the one hand, when loine pressure surpassed the setting pressure of safety valve 2143, safety valve 2143 was opened release pressure automatically, guaranteed system safety operation; On the other hand, controller can be controlled pneumatic ball valve 2144 every 30 minutes～60 minutes time openings, discharges the nitrogen in the pipeline, thereby guarantees the fresh of the interior nitrogen of pipeline.
Controller in above-mentioned disclosed each the high-tension cable crosslinking apparatus of the present invention can adopt single-chip microcomputer, also can adopt PLC (programmable logic controller (PLC)).
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. a high-tension cable crosslinking apparatus is characterized in that, comprising: nitrogen pot, the first control valve group, closed conduct, pressure sensor, heat exchanger, circulating fan, controller, a plurality of temperature sensor and a plurality of pneumatic ball valve;
Described nitrogen pot is used to store nitrogen;
Described closed conduct two ends are separately installed with the sealer that can hold the cable turnover, the top of described closed conduct is that heating tube, bottom are cooling water pipe, described heating tube is provided with an air inlet and at least one gas outlet, and described cooling water pipe is provided with an air inlet and at least one gas outlet;
Described temperature sensor is arranged at respectively on described heating tube and the cooling water pipe;
Described pressure sensor is arranged on the described heating tube;
The gas outlet of described heating tube and cooling water pipe is connected to the air inlet of described heat exchanger respectively by outlet pipe, the gas outlet of described heat exchanger is connected to described circulating fan;
Described circulating fan is connected in the air inlet of described cooling water pipe by admission line;
On the outlet pipe between the gas outlet of described heating tube and the described heat exchanger, be respectively arranged with described pneumatic ball valve on the gas outlet of described cooling water pipe and the outlet pipe between the described heat exchanger and on the air inlet of described cooling water pipe and the admission line between the described circulating fan;
The described first control valve group is arranged on the pipeline of the air inlet that connects described nitrogen pot and described heating tube, and the described first control valve group comprises electric control valve;
Described controller is connected with the pneumatic actuator of described temperature sensor, described pressure sensor, a plurality of described pneumatic ball valves and the electric operator of described electric control valve respectively, adjust the running status of a plurality of described pneumatic ball valves and electric control valve, nitrogen gas pressure and temperature in the control closed conduct according to the force value of the temperature value of described temperature sensor collection and described pressure sensor collection.
2. high-tension cable crosslinking apparatus according to claim 1 is characterized in that, further comprises:
Wash the nitrogen pipe;
The gas outlet and described gas outlet and the described blowdown pipe of washing the air inlet of nitrogen pipe of washing the air inlet of nitrogen pipe and/or being connected described cooling water pipe that connect described heating tube;
The sewage well that is connected with the described sewage draining exit of washing the nitrogen pipe;
First emptying device that is connected with the described exhaust outlet of washing the nitrogen pipe by blast pipe;
Be arranged at the pneumatic ball valve on described blowdown pipe and the described blast pipe, the pneumatic actuator of described pneumatic ball valve is connected with described controller, and described controller control is positioned at the pneumatic ball valve time opening on described blowdown pipe and the blast pipe.
3. high-tension cable crosslinking apparatus according to claim 1 and 2 is characterized in that, the described first control valve group comprises:
Be connected in first manual ball valve, electric control valve and second manual ball valve between the air inlet of described nitrogen pot and described heating tube successively;
Air inlet, the gas outlet that the 3rd manual ball valve, the air inlet of described the 3rd manual ball valve are connected to described first manual ball valve is connected to the gas outlet of described second manual ball valve.
4. high-tension cable crosslinking apparatus according to claim 3 is characterized in that, further comprises the second control valve group;
The described second control valve group comprises the 4th manual ball valve, pressure-reducing valve, the 5th manual ball valve and the 6th manual ball valve, described the 4th manual ball valve, pressure-reducing valve and the 5th manual ball valve are connected successively, the air inlet of described the 4th manual ball valve and the 6th manual ball valve is connected to described nitrogen pot, and the gas outlet of described the 5th manual ball valve and the 6th manual ball valve is connected to the gas outlet of described second manual ball valve.
5. high-tension cable crosslinking apparatus according to claim 4 is characterized in that, further comprises the 3rd control valve group;
Described the 3rd control valve group comprises the 7th manual ball valve, the 8th manual ball valve, safety valve, the pneumatic ball valve and second emptying device, the air inlet of described the 7th manual ball valve is connected to the gas outlet of described second manual ball valve, described the 8th manual ball valve, the air inlet of safety valve and pneumatic ball valve is connected to the gas outlet of described the 7th manual ball valve respectively, described the 8th manual ball valve, the gas outlet of safety valve and pneumatic ball valve is connected to described second emptying device, shown in the pneumatic actuator of pneumatic ball valve be connected pneumatic ball valve time opening shown in the described controller control with described controller.
6. high-tension cable crosslinking apparatus according to claim 1 is characterized in that, the electric heating system that described heating tube comprises pipeline, be arranged at the copper bar in the described pipeline outside or aluminium row and be connected with described copper bar or aluminium row.
7. high-tension cable crosslinking apparatus according to claim 1 is characterized in that, described cooling water pipe is the U-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110258771.7A CN102290151B (en) | 2011-09-02 | 2011-09-02 | High-voltage cable cross-linking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110258771.7A CN102290151B (en) | 2011-09-02 | 2011-09-02 | High-voltage cable cross-linking device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286895A (en) * | 2013-06-24 | 2013-09-11 | 白城福佳机械制造有限公司 | A vulcanization method for rubber cable production by using a dry method and a device thereof |
| CN106298067A (en) * | 2016-08-23 | 2017-01-04 | 中天昱品科技有限公司 | A kind of crosslinking line nitrogen circulating system |
| CN109659090A (en) * | 2017-10-10 | 2019-04-19 | 广州南洋电缆有限公司 | A kind of cable degassing chamber constant temperature energy-saving system |
| CN112133495A (en) * | 2020-09-03 | 2020-12-25 | 重庆泰山电缆有限公司 | Catenary-chain-type cross-linking production line nitrogen cooling system special for cable production |
| CN112201406A (en) * | 2020-09-10 | 2021-01-08 | 山东泰开电缆有限公司 | Automatic nitrogen purity control device and method for cross-linked pipe of cross-linked cable production line |
| CN112435806A (en) * | 2021-01-27 | 2021-03-02 | 江西太平洋电缆集团有限公司 | Crosslinking system and crosslinking method of high-voltage power cable |
| CN116959818A (en) * | 2023-08-14 | 2023-10-27 | 湖北力生电缆有限公司 | Water-gas balance system |
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| CN1419249A (en) * | 2002-12-06 | 2003-05-21 | 河北宝丰线缆有限公司 | VCV vertical U type cross-linking polyethylene insulation cable production line |
| CN2689411Y (en) * | 2004-04-16 | 2005-03-30 | 中国科学技术大学 | Ultraviolet light cross-linking apparatus for manufacturing cables and wires |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286895A (en) * | 2013-06-24 | 2013-09-11 | 白城福佳机械制造有限公司 | A vulcanization method for rubber cable production by using a dry method and a device thereof |
| CN106298067A (en) * | 2016-08-23 | 2017-01-04 | 中天昱品科技有限公司 | A kind of crosslinking line nitrogen circulating system |
| CN109659090A (en) * | 2017-10-10 | 2019-04-19 | 广州南洋电缆有限公司 | A kind of cable degassing chamber constant temperature energy-saving system |
| CN112133495A (en) * | 2020-09-03 | 2020-12-25 | 重庆泰山电缆有限公司 | Catenary-chain-type cross-linking production line nitrogen cooling system special for cable production |
| CN112201406A (en) * | 2020-09-10 | 2021-01-08 | 山东泰开电缆有限公司 | Automatic nitrogen purity control device and method for cross-linked pipe of cross-linked cable production line |
| CN112201406B (en) * | 2020-09-10 | 2022-03-04 | 山东泰开电缆有限公司 | Automatic nitrogen purity control device and method for cross-linked pipe of cross-linked cable production line |
| CN112435806A (en) * | 2021-01-27 | 2021-03-02 | 江西太平洋电缆集团有限公司 | Crosslinking system and crosslinking method of high-voltage power cable |
| CN116959818A (en) * | 2023-08-14 | 2023-10-27 | 湖北力生电缆有限公司 | Water-gas balance system |
| CN116959818B (en) * | 2023-08-14 | 2024-02-27 | 湖北力生电缆有限公司 | Water-gas balance system |
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| CN102290151B (en) | 2013-04-17 |
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Effective date of registration: 20220520 Address after: 137000 No. 20, xiqinglong Road, Taobei District, Baicheng City, Jilin Province Patentee after: BAICHENG FUJIA TECHNOLOGY Co.,Ltd. Address before: 137000 No. 20, xiqinglong Road, Taobei District, Baicheng City, Jilin Province Patentee before: Wang Xiangchao |