CN104022471A - 10kV moulding cable middle connector self-heating temperature controller and operation method - Google Patents
10kV moulding cable middle connector self-heating temperature controller and operation method Download PDFInfo
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- CN104022471A CN104022471A CN201410099771.0A CN201410099771A CN104022471A CN 104022471 A CN104022471 A CN 104022471A CN 201410099771 A CN201410099771 A CN 201410099771A CN 104022471 A CN104022471 A CN 104022471A
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Abstract
The invention relates to a 10kV moulding cable middle connector self-heating temperature controller and an operation method. The temperature controller is formed by a temperature control portion and a mica heating ring (2). The temperature control portion comprises a k-type thermocouple (3) placed at the heating position and connected with voltage temperature input ports (6) of a temperature controller (1) through wires. The temperature controller is connected with the mica heating ring (2) through temperature control voltage output ports (7) via wires. The mica heating ring is utilized to heat to enable a mould to be uniformly heated at each angle, thereby guaranteeing internal insulation materials to be melted fully, and reaching production process standard of a middle mould head so as to guarantee the service life of a cable middle connector; the temperature is in digital display and is easy to observe; temperature control is precise; the heating speed is fast; the labour intensity of operating personnel can be reduced; human factors which influence the service life of the moulding cable middle connector are reduced; the temperature controller is light in weight and convenient to carry and install; and compared with the heating work of a traditional blast lamp, the cost is very low.
Description
Technical field
The present invention relates to electric power system erection unit, relate in particular to a kind of 10kV molding cable mid head Automatic-heating temperature controller and method of operation.
Background technology
10 kilovolts of molding cable mid heads are to adopt the material identical with cable main insulating layer to recover cable main insulation, but due in bake process, do not have strict by technique carry out (shorten baking time, toast inhomogeneous that insulating barrier is heated is inhomogeneous) excess Temperature ageing of insulation, the too low insulating barrier of temperature not have fusing all can cause the insulating barrier of recovery to become one with cable main insulating layer, there is narrow and small gap in centre, water easily infiltrates to enter to discharge, or in manufacturing process the aging minimizing cable of the overheated generation of insulating barrier service life.
Take Dandong, Dandong as example, 412 119 kilometers, the existing 10kV cable in Dandong, wherein backbone cable is 186,96 kilometers, account for 80% of joint current overall length, main cable single cable is more than 550 meters have 70, and 68 kilometers account for 80% of main cable, and the continental monsoon climate of north temperate zone directly under the jurisdiction of a municipal government, Donggang City humid region.Affected by the Huanghai Sea, there is marine climate feature.Winter is without severe cold, summer is without heat, make a clear distinction between the four seasons, in rain same season of heat, precipitation 900---1000 millimeter, owing to adjoining the Huanghai Sea, Dandong level of ground water is higher, the degree of depth of cable laying is basic to maintain an equal level with level of ground water, and this just requires cable mid head to have extraordinary water proofing property, just can prevent that cable generation water from setting and causing cable insulation to puncture generation trip accident.By these several years, the cable mid head analysis of Dandong damage is summed up and reached a conclusion, molding cable end medial head has good sealing, is particularly useful for Dandong.But molding cable mid head is long in Production Time, many construction teams are in order to work to tight deadlines or the labour intensity of workman when reducing baking.And having shortened the baking time of molding cable mid head, this has just caused molding cable mid head not to be melted into one completely, or cable insulation is heated inhomogeneously, has not fusing of partial insulative layer.Long-play, causes insulating barrier infiltration that the electric discharge of water tree occurs, and causes cable mid head fault.Owing to adopting thermometer temperature control, cause heating-up temperature non-constant, affect the life-span of cable insulation material.
Summary of the invention
For solving above-mentioned the deficiencies in the prior art, the invention provides a kind of 10kV molding cable mid head Automatic-heating temperature controller and method of operation.Utilize electrothermic die to cover medial head surface and make it to be heated evenly, with temperature control instrument, control the temperature of electrothermic die, can make electrothermic die all the time in ideal temperature, avoid cable main insulation material in heating process, to occur aging.
The present invention is achieved by the following technical solutions:
10 kilovolts of molding cable mid head Automatic-heating temperature controllers, by temperature control part and mica heating collar, formed, temperature control partly comprises that the K-type thermocouple that is placed on heating position connects temperature controller voltage temperature input port by wire, and temperature controller is connected with mica heating collar through wire by temperature control voltage output port.
Described temperature controller comprises that REX c-100 thermostat connects respectively solid-state relay and voltage temperature input port, and solid-state relay is connected with power input terminal, temperature control voltage output port respectively.
The method of operation of 10 kilovolts of described molding cable mid head Automatic-heating temperature controllers, is characterized in that method of operation is:
(1), 10 kilovolts of molding cable mid head heating will be raised to 120 ℃ of maintenances 0.5 hour from room temperature;
(2), temperature being risen to 150 ℃ keeps 1 hour;
(3) be warmed up to, gradually 165 ℃ and keep 1.5 hours, amounting to heating time is can complete for 3 hours.
Advantageous effect of the present invention:
1, adopt each angle of mica heating collar heating mould to be heated evenly, guarantee that inner insulation material is all melted, thereby can reach the life-span of the manufacture craft standard assurance cable mid head of middle molding head completely.
2, temperature digital demonstration is easy to observe, and temperature is controlled accurately.
3, do not need long-time hand-held firing equipment heating only to need fast by key controlled temperature adjustment and firing rate, can reduce operating personnel's labour intensity, thereby reduce the life-span that human factor affects molding cable mid head.
4, electronic temperature controller is lightweight is easy to carry and installs, and it is very cheap to compare traditional blowtorch heating work cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is temperature controller host circuit structural representation of the present invention;
In figure: 1, temperature controller main frame, 2, mica heating collar, 3, K-type thermocouple, 4, REX c-100 thermostat, 5, solid-state relay, 6, voltage temperature input port, 7, temperature control voltage output port, 8, power input terminal.
Embodiment
Embodiment
As shown in Figure 1, 2,10 kilovolts of molding cable mid head Automatic-heating temperature controllers, by temperature control part and mica heating collar 2, formed, temperature control partly comprises that the K-type thermocouple 3 that is placed on heating position connects temperature controller 1 voltage temperature input port 6 by wire, and temperature controller is connected with mica heating collar 2 through wire by temperature control voltage output port 7.Described temperature controller 1 comprises that REX c-100 thermostat 4 connects respectively solid-state relay 5 and voltage temperature input port 6, and solid-state relay 5 is connected with power input terminal 8, temperature control voltage output port 7 respectively.
The present invention is applied to Dandong for area, port, by two classes of practical operations of power supply branch, Donggang City distribution fortune inspection, tested, through test of many times proof and on-the-spot application, adopt electrically heated molding cable mid head, have and be heated evenly, insulating material is not aging, can not produce the technological standards that gas reaches mould drop-head completely in heating process, thereby has extended the service life of mould drop-head.
Compare with adopting original blowtorch heating means, present embodiment has obvious beneficial effect.
1, rules require 10 kilovolts of molding cable mid heads heating will from room temperature be raised to 120 ℃ keep 0.5 hour, then rise to 150 ℃ and keep 1 hour, then be raised to gradually 165 ℃ and keep 1.5 hours.Needing altogether heating time is 3 hours.Adopt blowtorch Heat artificially because heating time is long, thereby thereby can cause operating personnel to have boredom to reduce the amount processed that affects cable molding head heating time.And the labour intensity that adopts 10 kilovolts of molding cable mid head Automatic-heating temperature controllers (only needing button temperature adjustment) can reduce operating personnel can reduce the life-span that human factor affects molding cable mid head.
2, adopt the flame of thermometer temperature control blowtorch in heating process can make thermometer generation Decrepitation Phenomena (thermometer includes mercury) pollute the environment.Generally doing a molding cable mid head all can an explosion 2-3 thermometer.And just can avoid this phenomenon to occur with adopting temperature controller, protection of the environment.
3, adopt 10 kilovolts of molding cable mid head Automatic-heating temperature controllers to manufacture cable mid head, thereby each angle of mould is heated evenly and guarantee that inner insulation material is all melted and guarantee in cable
Between head life-span.
If adopt blowtorch operation meeting to make cable well temperature increase while 4, making cable mid head in cable shaft, and the carbon monoxide entail dangers to producing after blowtorch burning is to the safety to operating personnel, and adopt 10 kilovolts of molding cable mid head Automatic-heating temperature controllers to make cable molding cable mid head, just can avoid this phenomenon to occur.
5, use blowtorch to make the required expense of molding cable mid head and be about 15 yuan (3, thermometer is total to partly 9 yuan, 6 yuan of propane gas), and adopt 10 kilovolts of molding cable mid head Automatic-heating temperature controllers only to need (3 yuan)
6, adopt 10 kilovolts of molding cable mid head Automatic-heating temperature controllers to manufacture the manufacture craft standard that cable mid head can reach middle molding head completely, thereby guaranteed the useful life of molding cable mid head.
Claims (3)
1.10 kilovolts of molding cable mid head Automatic-heating temperature controllers, it is characterized in that being formed by temperature control part and mica heating collar (2), temperature control partly comprises that the K-type thermocouple (3) that is placed on heating position connects temperature controller (1) voltage temperature input port (6) by wire, and temperature controller is connected with mica heating collar (2) through wire by temperature control voltage output port (7).
2. 10 kilovolts of molding cable mid head Automatic-heating temperature controllers according to claim 1, it is characterized in that described temperature controller 1 comprises that REX c-100 thermostat (4) connects respectively solid-state relay (5) and voltage temperature input port (6), solid-state relay (5) is connected with power input terminal (8), temperature control voltage output port (7) respectively.
3. the method for operation of 10 kilovolts of molding cable mid head Automatic-heating temperature controllers described in claim 1 or 2, is characterized in that method of operation is:
(1), 10 kilovolts of molding cable mid head heating will be raised to 120 ℃ of maintenances 0.5 hour from room temperature;
(2), temperature being risen to 150 ℃ keeps 1 hour;
(3) be warmed up to, gradually 165 ℃ and keep 1.5 hours, amounting to heating time is can complete for 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410099771.0A CN104022471A (en) | 2014-03-18 | 2014-03-18 | 10kV moulding cable middle connector self-heating temperature controller and operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410099771.0A CN104022471A (en) | 2014-03-18 | 2014-03-18 | 10kV moulding cable middle connector self-heating temperature controller and operation method |
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| CN104022471A true CN104022471A (en) | 2014-09-03 |
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| CN201410099771.0A Pending CN104022471A (en) | 2014-03-18 | 2014-03-18 | 10kV moulding cable middle connector self-heating temperature controller and operation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769104A (en) * | 2017-11-22 | 2018-03-06 | 国网四川省电力公司德阳供电公司 | A kind of Portable cable terminal makes support |
| CN109510052A (en) * | 2018-11-02 | 2019-03-22 | 国网辽宁省电力有限公司丹东供电公司 | A kind of 10 kv cable connect-disconnect plug extracting tools |
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| JPH1042419A (en) * | 1996-07-19 | 1998-02-13 | Showa Electric Wire & Cable Co Ltd | Method for controlling crosslinking and heating of insulating block |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769104A (en) * | 2017-11-22 | 2018-03-06 | 国网四川省电力公司德阳供电公司 | A kind of Portable cable terminal makes support |
| CN109510052A (en) * | 2018-11-02 | 2019-03-22 | 国网辽宁省电力有限公司丹东供电公司 | A kind of 10 kv cable connect-disconnect plug extracting tools |
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Application publication date: 20140903 |