CN106298067B - One kind crosslinking line nitrogen circulating system - Google Patents
One kind crosslinking line nitrogen circulating system Download PDFInfo
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- CN106298067B CN106298067B CN201610703881.2A CN201610703881A CN106298067B CN 106298067 B CN106298067 B CN 106298067B CN 201610703881 A CN201610703881 A CN 201610703881A CN 106298067 B CN106298067 B CN 106298067B
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- nitrogen
- high temperature
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- pipe
- pipeline
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
- H01B13/002—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment for heat extraction
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- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention discloses one kind to be crosslinked line nitrogen circulating system, it is sequentially connected including crosslinking pipe, nitrogen circulation pipeline, first circulation return air inlet flange, second circulation return air inlet flange, the first temperature thermocouple, first pressure table, condenser, circulating fan, the second temperature thermocouple, second pressure gauge, nitrogen tube, cooling water inlet pipe, cooling water outlet pipe, accessory substance collecting tank and control valve group, the first temperature thermocouple, first pressure table, condenser, circulating fan, the second temperature thermocouple and second pressure gauge；Control valve group includes high temperature cut-off valve, normally closed high temperature Pneumatic butterfly valve, angled seat control valve, normally opened high temperature Pneumatic butterfly valve and high temperature butterfly valve, control valve group is used for the input and output amount and circulation rate for controlling nitrogen, regulation nitrogen circulation speed in real time of the invention, improve the quality of crosslinked cable.
Description
Technical field
The present invention relates to crosslinking line production field, more particularly to a kind of crosslinking line nitrogen circulating system.
Background technology
Line is crosslinked in stopping process is produced, general producer can have shutdown line.Nitrogen circulation system is shut down being fitted without
In the case of system, technological requirement reduces the thickness of insulating barrier during reduction of speed, reduces and shuts down cost, and this section is shut down line and done
Cable out is exactly waste product, typically has six or seven ten meters of waste.Pipeline is crosslinked by heating pipe, precooling pipeline and cooling pipe
Three parts are formed, and the nitrogen with certain pressure is full of in the halfpipe of precooling pipeline one, and nitrogen mainly plays cooling effect, elevated pressure nitrogen
Gas is to prevent from being formed big bubble and too high moisture in crosslinked, and nitrogen protects poly- second mainly as heat transfer agent
Oxidative degradation does not occur in pipe for alkene, applies pressure to insulation, reduces air gap.The nitrogen of flowing has been taken away largely because of cooling water
Volatilization and in caused aqueous vapor and cross-linking reaction peroxide decomposite come moisture.In pre-cooling section, nitrogen main function is
Cable core surface is precooled, prevents core from cooling down suddenly, prevents water from entering in insulation.The effect of nitrogen pressure be for
Allow cross-linking by-products discharge cable, nitrogen pressure is typically best in 0.8-1.0, this also will depending on the situation of conductor,
If pressure is too big, and if conductor appearance is too loose, interior screen intrusion conductor is easy to.Because Insulation Material and shielding material are being crosslinked
Cross-linking reaction is produced in pipeline can produce certain accessory substance, can may also be burnt if these accessory substances meet oxygen.Normal
One to ensure having enough pressure in pipeline during production, two require that the nitrogen gas purity in pipeline will also reach regulation requirement.
The content of the invention
In order to solve the above problems, the invention provides one kind to be crosslinked line nitrogen circulating system.
The technical scheme is that：One kind crosslinking line nitrogen circulating system, including crosslinking pipe, nitrogen circulation pipeline, the
One is recycled back to tuyere flange, second circulation return air inlet flange, the first temperature thermocouple, first pressure table, condenser, circulated air
Machine, the second temperature thermocouple, second pressure gauge, nitrogen tube, cooling water inlet pipe, cooling water outlet pipe, accessory substance collecting tank, pair
Collection of products pond and control valve group, crosslinking pipe are provided with more piece crosslinking pipeline, including first segment crosslinking pipeline and final section crosslinking
Pipeline, nitrogen circulation pipeline include nitrogen circulation inlet pipeline and nitrogen circulation outlet conduit, first segment crosslinking pipeline and nitrogen
Circulate one end connection of inlet pipeline, nitrogen circulation outlet conduit and final section crosslinking pipeline communication；
First temperature thermocouple, first pressure table, condenser, circulating fan, the second temperature thermocouple and second pressure gauge
It is sequentially connected；Control valve group includes high temperature cut-off valve, normally closed high temperature Pneumatic butterfly valve, angled seat control valve, high temperature cut-off valve, normally closed High Temperature Gas
Dynamic butterfly valve, high temperature butterfly valve, normally opened high temperature Pneumatic butterfly valve and high temperature butterfly valve, control valve group be used to control the input and output amount of nitrogen with
And circulation rate.
Further, high temperature cut-off valve, the first temperature thermocouple and the first pressure are provided with the nitrogen circulation inlet pipeline
Power table, ball valve is provided with first pressure table.
Further, the other end of the nitrogen circulation inlet pipeline respectively with nitrogen inlet tie point and nitrogen inlet
Second branch road connects.
Further, normally closed high temperature Pneumatic butterfly valve and high temperature butterfly valve are connected with the nitrogen inlet tie point, it is normally closed
High temperature Pneumatic butterfly valve and high temperature butterfly valve are connected in parallel, and the output end of nitrogen inlet tie point is connected with condenser.
Further, normally opened high temperature Pneumatic butterfly valve and high temperature butterfly valve are provided with the branch road of nitrogen inlet second, it is normally opened
High temperature Pneumatic butterfly valve and high temperature butterfly valve are connected in series, and the output end of the branch road of nitrogen inlet second is connected with circulating fan.
Further, the second temperature thermocouple, second pressure gauge, normally closed height are provided with the nitrogen circulation outlet conduit
Warm Pneumatic butterfly valve, angled seat control valve and high temperature cut-off valve, normally closed high temperature Pneumatic butterfly valve, the second temperature thermocouple, second pressure gauge, angle
Seat control valve and high temperature cut-off valve are sequentially connected in series, and ball valve is provided with second pressure gauge.
Further, the circulating fan is connected with nitrogen tube, cooling water inlet pipe and cooling water outlet pipe, in nitrogen tube
Ball valve and magnetic valve are provided with, cooling water inlet pipe is provided with ball valve and magnetic valve, and cooling water outlet pipe also is provided with ball valve and electromagnetism
Valve.
Further, the input of the accessory substance collecting tank respectively with the output end of condenser and the output of circulating fan
End connection, the output end of accessory substance collecting tank are connected with collecting branch road and collecting branch road, collect branch road and collect branch road simultaneously respectively
Connection connection.
Further, small blower fan is installed outside the often section crosslinking pipe of the crosslinking pipe.
Further, emptying device is additionally provided with, emptying device is connected with vortex pump, and vortex pump is with washing the one of nitrogen pipe
End connection, the other end for washing nitrogen pipe are connected with washing nitrogen pipe tie point and washing the branch road of nitrogen pipe second respectively.
Beneficial effects of the present invention are：After nitrogen circulating system is installed, insulating barrier can not be reduced in stopping process
Thickness, by nitrogen circulating system and crosslinking pipe itself cooling, by be crosslinked pipe inside temperature quickly cool down, accelerate drop
The cable temperature being crosslinked in low stopping process inside pipe, it is qualified cable to ensure this section of cable.The present invention can real-time detection pipe
The pressure of nitrogen in road, and according to the air inflow and speed of the pressure value adjustment nitrogen detected, realize to nitrogen pressure in pipeline
Power automatically controls, and improves the quality of crosslinked cable.
Brief description of the drawings
Fig. 1 is a kind of structural representation for being crosslinked line nitrogen circulation pipeline disclosed by the invention；
Fig. 2 is a kind of structural representation for being crosslinked line nitrogen circulating system disclosed by the invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
The invention provides one kind to be crosslinked line nitrogen circulating system, including crosslinking pipe 1, nitrogen circulation pipeline 2, first circulation
Return air inlet flange 3, second circulation return air inlet flange 4, the first temperature thermocouple 5, first pressure table 6, condenser 7, circulating fan
8th, the second temperature thermocouple 9, the temperature thermocouple of second pressure gauge 10, nitrogen tube 11, cooling water inlet pipe 12, cooling water outlet pipe
13rd, accessory substance collecting tank 14, accessory substance collecting pit 15 and cold water station 16.
As shown in fig.1, crosslinking pipe 1 is provided with more length of tubing, including first segment crosslinking pipeline 101 and final section crosslinking
Pipeline 102, nitrogen circulation pipeline 2 include nitrogen circulation inlet pipeline 201, nitrogen circulation outlet conduit 202, the and of circulating fan 8
Control valve group.Circulating fan 8 divides nitrogen circulation pipeline 2 for nitrogen circulation inlet pipeline 201 and nitrogen circulation outlet conduit
202.First segment crosslinking pipeline 101 is connected with one end of nitrogen circulation inlet pipeline 201, and first circulation return air inlet flange 3 is set
Nitrogen circulation inlet pipeline 201 and first segment crosslinking pipeline 101 connectivity part, nitrogen circulation outlet conduit 202 and last
Section crosslinking pipeline 102 connects, and second circulation return air inlet flange 4 is arranged on nitrogen circulation outlet conduit 202 and is crosslinked with final section
The connectivity part of pipeline 102.
As shown in fig.2, high temperature cut-off valve 201a, the and of the first temperature thermocouple 5 are provided with nitrogen circulation inlet pipeline 201
First pressure table 6, high temperature cut-off valve 201a, the first temperature thermocouple 5 and first pressure table 6 are sequentially connected in series, first pressure table 6
On be provided with ball valve 6a, pass through the temperature thermocouple 5 of first pressure table 6 and first gather pressure value and temperature value, control nitrogen
Input quantity, the other end of first pressure table 6 connects with nitrogen inlet tie point 203 and the second branch road of nitrogen inlet 204 respectively
Connect, normally closed high temperature Pneumatic butterfly valve 203a and high temperature butterfly valve 203b is connected with nitrogen inlet tie point 203, normally closed high temperature is pneumatic
Butterfly valve 203a and high temperature butterfly valve 203b are connected in parallel, and the output end of nitrogen inlet tie point 203 is connected with condenser 7, condensation
Device 7 is connected with circulating fan 8；Normally opened high temperature Pneumatic butterfly valve 204a and high temperature butterfly valve are provided with the second branch road of nitrogen inlet 204
204b, normally opened high temperature Pneumatic butterfly valve 204a and high temperature butterfly valve 204b are connected in series, the output end of the second branch road of nitrogen inlet 204 with
Circulating fan 8 connects.
It is pneumatic that the second temperature thermocouple 9, second pressure gauge 10, normally closed high temperature are provided with nitrogen circulation outlet conduit 202
Butterfly valve 202a, angled seat control valve 202b and high temperature cut-off valve 202c, normally closed high temperature Pneumatic butterfly valve 202a, the second temperature thermocouple 9,
Two pressure gauges 10, angled seat control valve 202b and high temperature cut-off valve 202c are sequentially connected in series, and ball valve is provided with second pressure gauge 10
10a, the pressure value and temperature value of the temperature thermocouple 9 of second pressure gauge 10 and second, control the output quantity of nitrogen.First thermometric heat
Galvanic couple 5, first pressure table 6, condenser 7, circulating fan 8, the second temperature thermocouple 9 and second pressure gauge 10 are sequentially connected.
Circulating fan 8 is connected with nitrogen tube 11, cooling water inlet pipe 12 and cooling water outlet pipe 13, is set in nitrogen tube 11
There are ball valve 11a and magnetic valve 11b, for controlling the intake of nitrogen.Ball valve 12a and magnetic valve are provided with cooling water inlet pipe 12
12b, for controlling the influx of cooling water, cooling water outlet pipe 13 also is provided with ball valve 13a and magnetic valve 13b, cold for controlling
But the discharge of water.Cooling water enters in circulating fan 8 from cooling water inlet pipe 12, for from the second branch road of gas import 204
The nitrogen cooling being passed through, cooling water flow out from cooling water outlet pipe 13.
Nitrogen produces accessory substance in cooling procedure due to the reduction of temperature, and accessory substance is carried out by accessory substance collecting tank 14
Collect.The input of accessory substance collecting tank 14 is connected with the output end of condenser 7 and the output end of circulating fan 8 respectively, in nitrogen
Gas can obtain accessory substance after entering condenser 7, and accessory substance can be also obtained by the nitrogen of circulating fan 8.Accessory substance collecting tank 14
Output end respectively with collect branch road 141 and collect branch road 142 be connected, collect branch road 141 and collection branch road 142 be connected in parallel,
Collect and high temperature pneumatic ball valve 141a and high temperature manual ball valve 141b are provided with branch road 141, collect and be provided with high temperature on branch road 142
Manual ball valve 142a, the output end for collecting branch road 141 and collection branch road 142 are connected with accessory substance collecting pit 15.
Connected between condenser 7 and cold water station 16 by feed pipe 17, stop valve 17a is provided with feed pipe 17.
Nitrogen enters nitrogen circulation inlet pipeline 201 through being recycled back to tuyere flange, and condensed device condensation, circulating fan 8 will
Nitrogen is discharged from nitrogen circulation outlet conduit 202.
Nitrogen circulation cooling principle is：In moderating process is shut down, circulating fan 8 starts running, and nitrogen passes through through nitrogen
Pipe 11 enters in circulating fan 8, and the air inlet of most one section crosslinking pipeline 102, nitrogen are sent into through nitrogen circulation outlet conduit 202
Pipeline 102 is crosslinked from final section and is crosslinked the transport of the direction of pipeline 101 to first segment, because cable is to be crosslinked pipe 101 from first segment
Final section crosslinking pipe 102 is sent into, nitrogen cools down cable in a counter-current configuration in crosslinking pipe, and nitrogen temperature gradually rises, nitrogen
Gas is high temperature nitrogen when reaching first segment crosslinking pipe 101, and high temperature nitrogen is crosslinked pipe through first circulation return air inlet flange 3 from first segment
Road 101 enters in nitrogen circulation inlet pipeline 201, and high temperature nitrogen quickly cools down after condenser 7, and the nitrogen after cooling enters
Nitrogen circulation outlet conduit 202 is sent to by circulating fan 8.Control valve group includes high temperature cut-off valve 201a, the pneumatic butterfly of normally closed high temperature
Valve 202a, angled seat control valve 202b, high temperature cut-off valve 202c, normally closed high temperature Pneumatic butterfly valve 203a, high temperature butterfly valve 203b, normally opened high temperature
Pneumatic butterfly valve 204a and high temperature butterfly valve 204b, nitrogen is controlled inside pipeline by the opening and closing degree of control valve group in production process
The speed freely circulated, the circulating nitrogen gas into crosslinking pipe can be purer than the producing line of no nitrogen circulating system, crosslinking pipe
Internal accessory substance will be less, and cable surface can be relatively cleaner.
Small blower fan 18 is installed outside often section crosslinking pipe, the effect of small blower fan 18 is that natural wind is passed through into wind in stopping process
The temperature of crosslinking pipe surface is taken away during road, the reduction of this temperature is reduced outside crosslinking pipe, is handed over so as to gradually reduce
Union and its temperature of inside.After installing nitrogen circulating system, while outside blower fan work, internal nitrogen is by following greatly
Loop system is cooled, and both work simultaneously, quickly reduces temperature, it is possible to reduce downtime.
Emptying device 19 is further set, and emptying device 19 is connected with vortex pump 20, and vortex pump 20 is with washing nitrogen pipe 21
One end connection, wash nitrogen pipe 21 and work out flexible pipe for stainless steel, wash the other end of nitrogen pipe 21 respectively with wash nitrogen pipe tie point 22 and
Wash the second branch road of nitrogen pipe 23 to connect, wash nitrogen pipe tie point 22 and wash the second branch road of nitrogen pipe 23 and be connected in parallel, high temperature manual ball valve
22a and normally closed high temperature pneumatic ball valve 22b are arranged on and washed in nitrogen pipe tie point 22, and high temperature manual ball valve 23a, which is arranged on, washes nitrogen pipe
On second branch road 23, wash nitrogen pipe tie point 22 and wash the other end and first circulation return air inlet flange 3 of the second branch road of nitrogen pipe 23
Connection.Emptying device 19 is used for depressurizing equipment, and pressure can not enough send the sound and produce deleterious effect to equipment.
Embodiments of the invention are described in detail above, but the content is only presently preferred embodiments of the present invention,
It is not to be regarded as the practical range for limiting the present invention.All equivalent changes made according to the scope of the invention and improvement etc., all should
Still belong within covering scope of the present invention.
Claims (5)
1. one kind crosslinking line nitrogen circulating system, it is characterised in that：Followed including crosslinking pipe (1), nitrogen circulation pipeline (2), first
Loopback tuyere flange (3), second circulation return air inlet flange (4), the first temperature thermocouple (5), first pressure table (6), condenser
(7), circulating fan (8), the second temperature thermocouple (9), second pressure gauge (10), nitrogen tube (11), cooling water inlet pipe (12),
Cooling water outlet pipe (13), accessory substance collecting tank (14), accessory substance collecting pit (15) and control valve group；
Crosslinking pipe (1) is provided with more piece crosslinking pipeline, including first segment crosslinking pipeline (101) and final section crosslinking pipeline (102),
Nitrogen circulation pipeline (2) includes nitrogen circulation inlet pipeline (201) and nitrogen circulation outlet conduit (202), first segment crosslinking pipe
Road (101) connects with one end of nitrogen circulation inlet pipeline (201), and final section crosslinking pipeline (102) exports with nitrogen circulation
Pipeline (202) connects；
High temperature cut-off valve (201a), the first temperature thermocouple (5) and the first pressure are provided with the nitrogen circulation inlet pipeline (201)
Power table (6), ball valve (6a) is provided with first pressure table (6)；
The second temperature thermocouple (9), second pressure gauge (10), normally closed height are provided with the nitrogen circulation outlet conduit (202)
Warm Pneumatic butterfly valve (202a), angled seat control valve (202b) and high temperature cut-off valve (202c), wherein, nitrogen circulation outlet conduit (202)
On normally closed high temperature Pneumatic butterfly valve (202a), the second temperature thermocouple (9), second pressure gauge (10), angled seat control valve (202b)
It is sequentially connected in series with high temperature cut-off valve (202c), ball valve (10a) is provided with second pressure gauge (10)；
The other end of the nitrogen circulation inlet pipeline (201) respectively with nitrogen inlet tie point (203) and nitrogen inlet the
Two branch roads (204) are connected, and normally closed high temperature Pneumatic butterfly valve (203a) and high temperature butterfly valve are connected with nitrogen inlet tie point (203)
(203b), normally opened high temperature Pneumatic butterfly valve (204a) and high temperature butterfly valve (204b) are provided with the branch road of nitrogen inlet second (204)；
First temperature thermocouple (5), first pressure table (6), condenser (7), circulating fan (8), the second temperature thermocouple
(9) it is sequentially connected with second pressure gauge (10)；Circulating fan (8) is connected with nitrogen tube (11), cooling water inlet pipe (12) and cold
But water outlet pipe (13), ball valve (11a) and magnetic valve (11b) are provided with nitrogen tube (11), cooling water inlet pipe (12) is provided with
Ball valve (12a) and magnetic valve (12b), cooling water outlet pipe (13) also are provided with ball valve (13a) and magnetic valve (13b)；
The input of the accessory substance collecting tank (14) respectively with the output end of condenser (7) and the output end of circulating fan (8)
Connection, the output end of accessory substance collecting tank (14) are connected with collecting branch road (141) and collecting branch road (142) respectively, collect branch road
(141) it is connected in parallel with collection branch road (142)；
The control valve group includes high temperature cut-off valve (201a), nitrogen circulation outlet conduit on nitrogen circulation inlet pipeline (201)
(202) the normally closed high temperature Pneumatic butterfly valve (202a) on, the angled seat control valve (202b) on nitrogen circulation outlet conduit (202), nitrogen
The pneumatic butterfly of normally closed high temperature on high temperature cut-off valve (202c), nitrogen inlet tie point (203) on gas loop exit pipeline (202)
It is normal on high temperature butterfly valve (203b), the branch road of nitrogen inlet second (204) on valve (203a), nitrogen inlet tie point (203)
The high temperature butterfly valve (204b) on high temperature Pneumatic butterfly valve (204a) and the branch road of nitrogen inlet second (204) is opened, control valve group is used to control
The input and output amount and circulation rate of nitrogen processed.
A kind of 2. crosslinking line nitrogen circulating system according to claim 1, it is characterised in that：The nitrogen inlet first
Normally closed high temperature Pneumatic butterfly valve (203a) and high temperature butterfly valve (203b) on road (203) are connected in parallel, nitrogen inlet tie point
(203) output end is connected with condenser (7).
A kind of 3. crosslinking line nitrogen circulating system according to claim 2, it is characterised in that：The nitrogen inlet second
Normally opened high temperature Pneumatic butterfly valve (204a) and high temperature butterfly valve (204b) on road (204) are connected in series, the branch road of nitrogen inlet second
(204) output end is connected with circulating fan (8).
A kind of 4. crosslinking line nitrogen circulating system according to claim 1, it is characterised in that：The every of (1) is managed in the crosslinking
Small blower fan (18) is installed outside section crosslinking pipe.
A kind of 5. crosslinking line nitrogen circulating system according to claim 1, it is characterised in that：It is additionally provided with emptying device
(19), emptying device (19) is connected with vortex pump (20), and vortex pump (20) is connected with washing one end of nitrogen pipe (21), washes nitrogen pipe
(21) the other end is connected with washing nitrogen pipe tie point (22) and washing the branch road of nitrogen pipe second (23) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703881.2A CN106298067B (en) | 2016-08-23 | 2016-08-23 | One kind crosslinking line nitrogen circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703881.2A CN106298067B (en) | 2016-08-23 | 2016-08-23 | One kind crosslinking line nitrogen circulating system |
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| Publication Number | Publication Date |
|---|---|
| CN106298067A CN106298067A (en) | 2017-01-04 |
| CN106298067B true CN106298067B (en) | 2017-12-05 |
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ID=57662152
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610703881.2A Active CN106298067B (en) | 2016-08-23 | 2016-08-23 | One kind crosslinking line nitrogen circulating system |
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| CN (1) | CN106298067B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07325188A (en) * | 1994-05-31 | 1995-12-12 | Toshiba Eng Co Ltd | Cooling system for reactor isolation time |
| CN2935397Y (en) * | 2006-08-23 | 2007-08-15 | 肖宇志 | Apparatus for eliminating insulation droop in cable cross-linking process |
| CN102290151B (en) * | 2011-09-02 | 2013-04-17 | 王向超 | High-voltage cable cross-linking device |
| CN203690003U (en) * | 2013-12-23 | 2014-07-02 | 白城天奇装备机械有限公司 | Horizontal crosslinking production line nitrogen first segment solidification cooling device |
| CN204303485U (en) * | 2014-12-31 | 2015-04-29 | 成都鑫成鹏线缆材料有限公司 | A kind of electric wire polyethylene insulation pellet drying device |
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