CN2324622Y - Cooling apparatus capable of reducing cross linking cable insulating layer heat stress - Google Patents
Cooling apparatus capable of reducing cross linking cable insulating layer heat stress Download PDFInfo
- Publication number
- CN2324622Y CN2324622Y CN 97251066 CN97251066U CN2324622Y CN 2324622 Y CN2324622 Y CN 2324622Y CN 97251066 CN97251066 CN 97251066 CN 97251066 U CN97251066 U CN 97251066U CN 2324622 Y CN2324622 Y CN 2324622Y
- Authority
- CN
- China
- Prior art keywords
- warm water
- pipeline
- cooling
- cable
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model relates to a cooling apparatus capable of reducing cross linking cable insulating layer heat stress. A warm water pre-cooling pipeline is additionally arranged between a nitrogen gas pre-cooling pipeline and a cooling pipeline; a cooling water return pipe is provided with a flow control valve; the front end of the warm water pre-cooling pipeline is provided with a warm water return pipe. The utility model is additionally provided with the warm water pre-cooling pipeline, and thus the pre-cooling temperature of the cable can be controlled between 100-85DEG. C; the cable is then cooled; the insulation layer temperature of the cable after pre-cooling can be slowly cooled under crystallizing temperature; the stress condition and the stress size in the insulating layer are improved to meet the values of the cross linking cables K1 and K2 and to exceed GB2951 normal specify; thus, the electric insulating performance of the cable is ensured.
Description
The utility model is a kind of cooling device of producing in the crosslinked cable machine.
At present, the cooling device in the crosslinked cable production line is divided into the precooling zone of nitrogen with the cooling section of cold water.The cable surface temperature of finishing after crosslinked is about 270 ℃, through after the nitrogen precooled pipeline precooling, cable surface, insulating barrier and core are cooled to 110 ℃ with one temperature, cable cools off through the water cooling pipeline again, therefore after cable enters in the cooling water, owing to chilling produces the thermal stress of insulating barrier, form the internal stress of cable insulation, the electricity function index K of product
1, K
2Value can not reach the GB2951 standard code
The purpose of this utility model is that a kind of cooling device that can reduce the cross-linked cable insulating layer thermal stress will be provided, and makes the electricity function index K of cable
1, K
2Value reaches the GB2951 standard code.
The utility model solution is to install warm water precooling pipeline between the nitrogen precooled pipeline of cooling device and cold water cooling line additional, between cooling line and the warm water pipeline CWR is housed, add flow control valve on the CWR, between nitrogen precooled pipeline and the warm water precooling pipeline warm water return pipe is housed.Cable after crosslinked enters warm water precooling pipeline after by nitrogen precooled pipeline precooling, enter cooling line from warm water precooling pipeline process again, cooling water flows through from cooling line, most of water flows out from CWR, fraction water enters warm water precooling pipeline, in pipeline, slowly flow, flow out from the warm water return pipe at last, in warm water precooling pipeline, cable and cooling water temperature exchange, and the temperature of water can reach more than 65 ℃, can reduce between 100-85 ℃ through the cable temperature after the warm water precooling in the warm water precooling pipeline, in addition, warm water can be taken floating crosslinked product out of from the warm water return pipe, improves cable quality.The flow control valve may command enters the flow of warm water precooling pipeline water, and when flow control valve left very greatly, most water flowed out from CWR, and low amounts of water flows into warm water precooling pipeline, slowly flows in pipeline, and electric heating cable can be heated.
The utility model is owing to increased warm water precooling pipeline, cable temperature can be chilled between 100-85 ℃ in advance, cool off again, but after making cable by precooling the insulating barrier slow cooling below crystallization temperature, can improve stress state and stress intensity in the insulating barrier, make the K of cross-linked power cable
1, K
2Value satisfies and surpasses the regulation of GB2951 standard, has guaranteed the electrical insulation properties of cable.
Below in conjunction with drawings and Examples the utility model is further specified:
Accompanying drawing is the utility model schematic diagram.
The utility model is made up of through cold pipeline 1, cooling line 2 and CWR 3 nitrogen, between nitrogen precooled pipeline 1 and cooling line 2, install warm water precooling pipeline 4 additional, flow control valve 7 is housed on the CWR 3, between nitrogen precooled pipeline 1 and the warm water precooling pipeline 4 warm water return pipe 6 is housed.Also can be provided with backwater jar 5 between nitrogen precooled pipeline 1 and warm water precooling pipeline 4, warm water return pipe 6 connects backwater jar 5.Making warm water pass through backwater jar 5 flows out from warm water return pipe 6.
Claims (2)
1, a kind of cooling device that reduces the cross-linked cable insulating layer thermal stress, form by nitrogen precooled pipeline (1), cooling line (2) and cooling water solid water pipe (3), it is characterized in that: install warm water precooling pipeline (4) additional between nitrogen precooled pipeline (1) and the cooling line (2), flow control valve (7) is housed on the CWR (3), between nitrogen precooled pipeline (1) and the warm water precooling pipeline (4) warm water return pipe (6) is housed.
2, cooling device according to claim 1 is characterized in that; Be provided with backwater jar (5) between nitrogen precooled pipeline (1) and the warm water precooling pipeline (4), warm water return pipe (6) connects backwater jar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97251066 CN2324622Y (en) | 1997-12-02 | 1997-12-02 | Cooling apparatus capable of reducing cross linking cable insulating layer heat stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97251066 CN2324622Y (en) | 1997-12-02 | 1997-12-02 | Cooling apparatus capable of reducing cross linking cable insulating layer heat stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2324622Y true CN2324622Y (en) | 1999-06-16 |
Family
ID=33957452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97251066 Expired - Fee Related CN2324622Y (en) | 1997-12-02 | 1997-12-02 | Cooling apparatus capable of reducing cross linking cable insulating layer heat stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2324622Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362601C (en) * | 2004-04-06 | 2008-01-16 | 沈煜伟 | Multi-wire continuous chemical cross-linked production line of wire and cable by two-step method |
| CN102290151A (en) * | 2011-09-02 | 2011-12-21 | 王向超 | High-voltage cable cross-linking device |
| CN103532069A (en) * | 2013-10-23 | 2014-01-22 | 范全军 | Two-way air suction type electric cable cooling device |
-
1997
- 1997-12-02 CN CN 97251066 patent/CN2324622Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362601C (en) * | 2004-04-06 | 2008-01-16 | 沈煜伟 | Multi-wire continuous chemical cross-linked production line of wire and cable by two-step method |
| CN102290151A (en) * | 2011-09-02 | 2011-12-21 | 王向超 | High-voltage cable cross-linking device |
| CN102290151B (en) * | 2011-09-02 | 2013-04-17 | 王向超 | High-voltage cable cross-linking device |
| CN103532069A (en) * | 2013-10-23 | 2014-01-22 | 范全军 | Two-way air suction type electric cable cooling device |
| CN103532069B (en) * | 2013-10-23 | 2015-11-25 | 徐萍 | A kind of two-way air suction type electric cable cooling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |