CN105449576A - Oil supply system used for seabed oil charging cable - Google Patents
Oil supply system used for seabed oil charging cable Download PDFInfo
- Publication number
- CN105449576A CN105449576A CN201510846798.6A CN201510846798A CN105449576A CN 105449576 A CN105449576 A CN 105449576A CN 201510846798 A CN201510846798 A CN 201510846798A CN 105449576 A CN105449576 A CN 105449576A
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- CN
- China
- Prior art keywords
- oil
- electromagnetically operated
- operated valve
- filled cable
- supply system
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
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- Pipeline Systems (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
The invention relates to an oil supply system used for a seabed oil charging cable, comprising two groups of oil charging units which are arranged on two ends of the oil charging cable; each group of the oil charging unit comprises an oil storage tank, a positive displacement pump, a tee regulating valve, a flow metering module, a pressure transducer, a temperature sensor and a vacuum pump. The oil storage tank is communicated with the end of the oil charging cable through a connection pipeline; the positive displacement pump, the tee regulating valve, the flow metering module, the pressure sensor and the temperature sensor are successively arranged on the connection pipeline between the oil storage tank and the oil charging cable. The vacuum pump is connected to the oil storage tank through the pipeline; the positive displacement pump, the tee regulating valve, the flow metering module, the pressure sensor and the temperature sensor are connected to a console. Compared with the prior art, the invention can realize small flow oil supply under a normal working condition in order to satisfy the big flow oil supply under an emergency condition, strive for more time for the power line repair, eliminates the air inside the oil line and reduces the system fault sources.
Description
Technical field
The present invention relates to a kind of oil-filled cable oil supply system, especially relate to a kind of oil supply system for seabed oil-filled cable.
Background technology
Hainan networked system is domestic first long distance, superhigh pressure, Large Copacity networking power transmission and transformation system over strait, and wherein over strait section of circuit employing is 500kV seabed oil-filled cable.According to statistics, the damage that the damage that sea fishery causes extra large cable, shipping and ocean engineering ship cause extra large cable, natural conditions cause the damage of extra large cable to be the three large reasons that extra large cable breaks down, and wherein the extra large cable damage of 95% is because the activity such as fishery, shipping of the mankind causes.The humanistic environment of Qiongzhou Strait is very complicated, harbour, anchorage, and course line is also more, and fish production is busy, and therefore, submarine cable is very easily subject to the impact of human factor, is damaged by external force.
Under normal mode of operation, in oil-filled cable, oil pressure should remain above the external sea hydrostatic pressure of submarine cable suffered by seabed, so just can guarantee submarine cable normal transmission, now submarine cable requires less to the pump discharge of oil supply system, only needs to keep corresponding pressure head to stablize.Once submarine cable suffers outside destroy, insulating oil will be bled into marine, and pressure itself reduces simultaneously, for preventing inwelling, keeping the transmission of electricity of extra large cable stable, now in cable, oily flow need sharply increase, and strives for buffer time as repairing scene, and is unlikely to impact operation.
The patent No. is that the Chinese invention patent of ZL200710040199.0 discloses a kind of automatic emergency oil supply system of oil-filling cable, provides a kind of solution in emergency circumstances, specifically adopts the mode of pressure tank and a series of control to realize.Along with the unlatching of urgent fuel feeding, pressure tank internal pressure will decline gradually, and for reaching longer urgent supply time, in pressure tank, initial pressure is inevitable comparatively large, and original volume is comparatively large, and Large Copacity high pressure becomes the potential safety hazard of power plant; This design is comparatively applicable to the oil-filled cable of short distance, low oil pressure as can be seen here, inapplicable for the submarine cable of long distance, high oil pressure.
Publication number is that the Chinese patent of CN203374539U discloses a kind of confession oil circulating system being applied to seabed filling type power cable, comprise hydraulic system, for controlling the insulation fuel tank station control system of fuel delivery change, oily survey device and oil supply loop system, hydraulic system is connected with insulation fuel tank station control system, the insulation fuel tank station control system other end is surveyed device with oil and is connected, oil is surveyed device and is connected with oil supply loop system, and oil supply loop system is also connected to described insulation fuel tank station control system.The Parameters variation of oil pressure and oil duct flow velocity after the breakage of direct monitoring oil duct, identifies the change of situation.Can realize, by pumping plant PLC program control, starting urgent oily stream mode, and minimum discharge can be reduced to by presetting curve, to guarantee not having seawater to enter cable, and reduce unnecessary insulating oil as far as possible and leak in environment.Fuel feeding circulation under the emergency mode of effective guarantee sea electric power cable, achieves the automation for oil circulating system, improves the reliability of fuel feeding circulation.But this oil supply system vibrational power flow is comparatively complicated, control operation is simultaneously not convenient.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and provide a kind of structure to realize low discharge fuel feeding and high flow rate oil supply function, for the oil supply system of seabed oil-filled cable simply, simultaneously.
Object of the present invention can be achieved through the following technical solutions:
A kind of oil supply system for seabed oil-filled cable, comprise the two groups of oil-filled unit being arranged on oil-filled cable two ends, often organize oil-filled unit and include oil tank, displacement pump, three-way control valve, flow measurement module, pressure sensor, temperature sensor and vacuum pump, described oil tank is communicated with the end of oil-filled cable by connecting line, described displacement pump, three-way control valve, flow measurement module, pressure sensor and temperature sensor are set in sequence on the connecting line between oil tank and oil-filled cable, described vacuum pump is connected by pipeline with oil tank, described displacement pump, three-way control valve, flow measurement module, pressure sensor and temperature sensor are all connected with console.
Two interfaces of described three-way control valve are connected on the connecting line between oil tank and oil-filled cable, and another interface is communicated with oil tank by return line.
Described console adopts touch display screen to carry out showing, function setting and regulation and control, is inside provided with configuration software,
Described console Real-Time Monitoring oil-filled cable two ends built-in electrical insulation oil pressure, temperature and flow, and it is shown in real time on touch display screen, regulate and control displacement pump by touch display screen, the state of three-way control valve regulates oil-filled cable two ends built-in electrical insulation oil pressure and flow.
Described three-way control valve power source adopts electronic or pneumatic, and its aperture controls by the configuration software in console.
Described displacement pump pump head form is single head or bull plunger displacement pump, and power adopts variable-frequency motor and carries out Flow-rate adjustment.
Described flow measurement module comprises flowmeter, first electromagnetically operated valve, second electromagnetically operated valve, 3rd electromagnetically operated valve and the 4th electromagnetically operated valve, described flowmeter is arranged on the connecting line between oil tank and oil-filled cable, the first described electromagnetically operated valve, second electromagnetically operated valve is arranged on the two ends of flowmeter, flowmeter and the first electromagnetically operated valve linkage section are parallel with the first parallel pipeline, the 3rd described electromagnetically operated valve is located on the first parallel pipeline, flowmeter and the second electromagnetically operated valve linkage section are parallel with the second parallel pipeline, the 4th described electromagnetically operated valve is located on the second parallel pipeline, the first described electromagnetically operated valve, second electromagnetically operated valve, 3rd electromagnetically operated valve and the 4th electromagnetically operated valve are all connected with console, by the coupling opening and closing of each electromagnetically operated valve, realize the bidirectional traffics metering of metering module.
Described vacuum pump operates continuously, and vacuum capability is satisfied reaches high vacuum state, avoids bubble to enter oil circuit and causes voltage cable to fluctuate.
The present invention uses two independently oil-filled unit, and configures identical, can accomplish independently, operate simultaneously.
The present invention breaks traditions and utilizes fluid column static pressure to realize the stable thinking of oil pressure in cable, then set up a set of pumping system with forced flow, while maintenance oil-filled cable internal oil pressure, utilize the flowing of insulating oil to be taken out of in time by the heat produced in cable, avoid temperature to rise.First oil supply system configures a set of pumping system for this reason, and can realize the demand of long distance seabed conveying oil pressure, and pumping system adopts positive displacement pump, can obtain stable high pressure; Secondly for ensureing the flowing of insulating oil in cable, a Large Copacity oil tank is respectively set up in oil supply system both sides; Simultaneously in order to ensure the stable operation of system, should supporting corresponding auxiliary equipment, comprise excess traffic shunting or backflow, cable insulating oil pressure detecting, temperature detection and flow monitoring element; Finally for realizing the Integrated Judgement of all information datas, set up and a set ofly have in real time display and the configuration software of logical operation function, guarantee system can be run voluntarily.In addition, due to insulating oil long-play and by cable warming-up effect, may produce a small amount of gas, these gases will have an impact to cable power transmission, on oil tank, be therefore necessary that installing pumped vacuum systems additional keeps gas phase to be no longer mixed in insulating oil.
Compared with prior art, the present invention can realize seabed oil-filled cable low discharge fuel feeding in the normal mode of operation, and meets the high flow rate oil supply demand under urgent emergency case, for electric power first-aid strives for the more time, get rid of gas in oil circuit simultaneously, reduce system failure source.
Accompanying drawing explanation
Fig. 1 is the oil supply system schematic diagram of the present invention for seabed oil-filled cable;
Fig. 2 is flow measurement modular structure schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of oil supply system for seabed oil-filled cable, as shown in Figure 1, comprise the two groups of oil-filled unit being arranged on oil-filled cable 9 two ends, often organize oil-filled unit and include oil tank 1, displacement pump 2, three-way control valve 3, flow measurement module 4, pressure sensor 5, temperature sensor 6 and vacuum pump 7, oil tank 1 is communicated with by the end of connecting line with oil-filled cable 9, displacement pump 2, three-way control valve 3, flow measurement module 4, pressure sensor 5 and temperature sensor 6 are set in sequence on the connecting line between oil tank 1 and oil-filled cable 9, vacuum pump 7 is connected by pipeline with oil tank 1, displacement pump 2, three-way control valve 3, flow measurement module 4, pressure sensor 5 and temperature sensor 6 are all connected with console 8.
Console 8 adopts touch display screen to carry out showing, function setting and regulation and control, inside be provided with configuration software, console 8 Real-Time Monitoring oil-filled cable 9 two ends built-in electrical insulation oil pressure, temperature and flow, and it is shown in real time on touch display screen, regulate oil-filled cable 9 two ends built-in electrical insulation oil pressure and flow by the state of touch display screen regulation and control displacement pump 2, three-way control valve 3.Two interfaces of three-way control valve 3 are connected on the connecting line between oil tank 1 and oil-filled cable 9, and another interface is communicated with oil tank 1 by return line.Three-way control valve 3 power source adopts electronic or pneumatic, and its aperture controls by the configuration software in console 8.The form of displacement pump 2 pump head is single head or bull plunger displacement pump, and power adopts variable-frequency motor and carries out Flow-rate adjustment.Vacuum pump 7 operates continuously, and vacuum capability is satisfied reaches high vacuum state, avoids bubble to enter oil circuit and causes voltage cable to fluctuate.
As shown in Figure 2, flow measurement module 4 comprises flowmeter 41, first electromagnetically operated valve 42, second electromagnetically operated valve 43, 3rd electromagnetically operated valve 44 and the 4th electromagnetically operated valve 45, flowmeter 41 is arranged on the connecting line between oil tank 1 and oil-filled cable 9, first electromagnetically operated valve 42, second electromagnetically operated valve 43 is arranged on the two ends of flowmeter 41, flowmeter 41 and the first electromagnetically operated valve 42 linkage section are parallel with the first parallel pipeline, 3rd electromagnetically operated valve 44 is located on the first parallel pipeline, flowmeter 41 and the second electromagnetically operated valve 43 linkage section are parallel with the second parallel pipeline, 4th electromagnetically operated valve 45 is located on the second parallel pipeline, first electromagnetically operated valve 42, second electromagnetically operated valve 43, 3rd electromagnetically operated valve 44 and the 4th electromagnetically operated valve 45 are all connected with console 8, by the coupling opening and closing of each electromagnetically operated valve, realize the bidirectional traffics metering of metering module.
Under normal fuel injection pattern, the pump discharge of the displacement pump 2 of two oil-filled unit is less, and pumping pressure is stablized; The three-way control valve 3 of two oil-filled unit is by controlling oil-filled cable 9 two ends pressure head, make one end insulating oil pressure slightly larger than the other end, guarantee that in oil-filled cable 9, insulating oil is at least along a direction flowing with this, utilize flowing insulating oil to cool in time oil-filled cable 9, avoid temperature to raise.Above process insulating oil can slowly flow to opposite side oil tank by side oil tank, after certain hour, when insulating oil volume in the oil tank of one end is down to restriction liquid level, oil supply system console 8 is oppositely adjusted by the control three-way control valve 3 at two ends and the pressure head of the keying of pipeline related valve to oil-filled cable 9 two ends, thus change the flow direction of insulating oil in oil-filled cable 9, guarantee system long-time steady operation.
Under urgent fuel feeding pattern, when there is breakage and cause insulating oil to leak in oil-filled cable 9 somewhere, larger change will be there is in oil-filled cable 9 two ends flow, even there is reverse flow situation in port of export insulating oil, whether oil supply system will mate by detecting oil-filled cable 9 two ends flow, and leak foundation as judging.Now console 8 will switch to urgent fuel feeding pattern, now three-way control valve 3 will reduce capacity of returns, strengthen the fuel delivery to oil-filled cable 9, the pump discharge of two ends displacement pump 2 all strengthens by situation simultaneously, thus guarantee that in oil-filled cable 9, oil pressure is all the time higher than seabed static pressure, insulating oil overflows and unlikely inwelling.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (7)
1. the oil supply system for seabed oil-filled cable, it is characterized in that, comprise the two groups of oil-filled unit being arranged on oil-filled cable (9) two ends, often organize oil-filled unit and include oil tank (1), displacement pump (2), three-way control valve (3), flow measurement module (4), pressure sensor (5), temperature sensor (6) and vacuum pump (7)
Described oil tank (1) is communicated with by the end of connecting line with oil-filled cable (9), described displacement pump (2), three-way control valve (3), flow measurement module (4), pressure sensor (5) and temperature sensor (6) are set in sequence on the connecting line between oil tank (1) and oil-filled cable (9), described vacuum pump (7) is connected by pipeline with oil tank (1), described displacement pump (2), three-way control valve (3), flow measurement module (4), pressure sensor (5) and temperature sensor (6) are all connected with console (8).
2. a kind of oil supply system for seabed oil-filled cable according to claim 1, it is characterized in that, two interfaces of described three-way control valve (3) are connected on the connecting line between oil tank (1) and oil-filled cable (9), and another interface is communicated with oil tank (1) by return line.
3. a kind of oil supply system for seabed oil-filled cable according to claim 1, is characterized in that, described console (8) adopts touch display screen to carry out showing, function setting and regulation and control, is inside provided with configuration software,
Described console (8) Real-Time Monitoring oil-filled cable (9) two ends built-in electrical insulation oil pressure, temperature and flow, and it is shown in real time on touch display screen, regulate and control displacement pump (2) by touch display screen, the state of three-way control valve (3) regulates oil-filled cable (9) two ends built-in electrical insulation oil pressure and flow.
4. a kind of oil supply system for seabed oil-filled cable according to claim 3, it is characterized in that, described three-way control valve (3) power source adopts electronic or pneumatic, and its aperture controls by the configuration software in console (8).
5. a kind of oil supply system for seabed oil-filled cable according to claim 1, is characterized in that, the form of described displacement pump (2) pump head is single head or bull plunger displacement pump, and power adopts variable-frequency motor and carries out Flow-rate adjustment.
6. a kind of oil supply system for seabed oil-filled cable according to claim 1, it is characterized in that, described flow measurement module (4) comprises flowmeter (41), first electromagnetically operated valve (42), second electromagnetically operated valve (43), 3rd electromagnetically operated valve (44) and the 4th electromagnetically operated valve (45), described flowmeter (41) is arranged on the connecting line between oil tank (1) and oil-filled cable (9), described the first electromagnetically operated valve (42), second electromagnetically operated valve (43) is arranged on the two ends of flowmeter (41), flowmeter (41) and the first electromagnetically operated valve (42) linkage section are parallel with the first parallel pipeline, the 3rd described electromagnetically operated valve (44) is located on the first parallel pipeline, flowmeter (41) and the second electromagnetically operated valve (43) linkage section are parallel with the second parallel pipeline, the 4th described electromagnetically operated valve (45) is located on the second parallel pipeline, described the first electromagnetically operated valve (42), second electromagnetically operated valve (43), 3rd electromagnetically operated valve (44) and the 4th electromagnetically operated valve (45) are all connected with console (8), by the coupling opening and closing of each electromagnetically operated valve, realize the bidirectional traffics metering of metering module.
7. a kind of oil supply system for seabed oil-filled cable according to claim 1, is characterized in that, described vacuum pump (7) operates continuously, and vacuum capability is satisfied reaches high vacuum state, avoids bubble to enter oil circuit and causes voltage cable to fluctuate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510846798.6A CN105449576B (en) | 2015-11-26 | 2015-11-26 | A kind of oil supply system for seabed oil-filled cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510846798.6A CN105449576B (en) | 2015-11-26 | 2015-11-26 | A kind of oil supply system for seabed oil-filled cable |
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| Publication Number | Publication Date |
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| CN105449576A true CN105449576A (en) | 2016-03-30 |
| CN105449576B CN105449576B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510846798.6A Active CN105449576B (en) | 2015-11-26 | 2015-11-26 | A kind of oil supply system for seabed oil-filled cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839578A (en) * | 2017-11-30 | 2018-03-27 | 郑州宝钢钢材加工配送有限公司 | A kind of oil product transport carriage and conveyer method |
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| GB1098743A (en) * | 1964-03-18 | 1968-01-10 | Asea Ab | Improvements in expansion vessels for oil-filled cables |
| CN1460840A (en) * | 2003-07-01 | 2003-12-10 | 陈志� | Two-way fluid metering device |
| CN203374539U (en) * | 2013-08-08 | 2014-01-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Oil supply circulating system for submarine oil-charged power cable |
| CN104677459A (en) * | 2015-03-13 | 2015-06-03 | 国家电网公司 | Oil-filled cable terminal oil level measuring and oil supplementing method |
| CN204405304U (en) * | 2014-12-27 | 2015-06-17 | 潍柴动力股份有限公司 | Spin-on oil filter performance testing device |
-
2015
- 2015-11-26 CN CN201510846798.6A patent/CN105449576B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1098743A (en) * | 1964-03-18 | 1968-01-10 | Asea Ab | Improvements in expansion vessels for oil-filled cables |
| CN1460840A (en) * | 2003-07-01 | 2003-12-10 | 陈志� | Two-way fluid metering device |
| CN203374539U (en) * | 2013-08-08 | 2014-01-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Oil supply circulating system for submarine oil-charged power cable |
| CN204405304U (en) * | 2014-12-27 | 2015-06-17 | 潍柴动力股份有限公司 | Spin-on oil filter performance testing device |
| CN104677459A (en) * | 2015-03-13 | 2015-06-03 | 国家电网公司 | Oil-filled cable terminal oil level measuring and oil supplementing method |
Non-Patent Citations (2)
| Title |
|---|
| 黄小卫，王剑英，臧源源: "《海南联网500kV海底充油电缆紧急油流模式下油泵站供油动力需求分析与探讨》", 《液压气动与密封》 * |
| 黄小卫，臧源源，王剑英: "《泵站在海南联网500KV海底充油电缆供油系统中的应用》", 《机电信息》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839578A (en) * | 2017-11-30 | 2018-03-27 | 郑州宝钢钢材加工配送有限公司 | A kind of oil product transport carriage and conveyer method |
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| CN105449576B (en) | 2018-06-26 |
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Address after: 510620 Luogang District Science City, Guangdong, science Avenue, No. A4, ninth to layer 181, Applicant after: GUANGZHOU BUREAU OF EXTRA HIGH VOLTAGE TRANSMISSION COMPANY OF CHINA SOUTHERN POWER GRID Co.,Ltd. Applicant after: SHANGHAI RESEARCH INSTITUTE OF CHEMICAL INDUSTRY Co.,Ltd. Address before: 510620 Luogang District Science City, Guangdong, science Avenue, No. A4, ninth to layer 181, Applicant before: GUANGZHOU BUREAU OF EXTRA HIGH VOLTAGE TRANSMISSION COMPANY OF CHINA SOUTHERN POWER GRID Co.,Ltd. Applicant before: Shanghai Research Institute of Chemical Industry |
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Effective date of registration: 20230721 Address after: 570000 Unit B, 14 #, Fortune Plaza, 103 Binhai Avenue, Haikou City, Hainan Province Patentee after: Haikou Branch of Guangzhou Bureau of China Southern Power Grid Co.,Ltd. Patentee after: SHANGHAI RESEARCH INSTITUTE OF CHEMICAL INDUSTRY Co.,Ltd. Address before: Floor 9-11, A4, No. 181, Science Avenue, Science City, Luogang District, Guangzhou, Guangdong 510620 Patentee before: GUANGZHOU BUREAU OF EXTRA HIGH VOLTAGE TRANSMISSION COMPANY OF CHINA SOUTHERN POWER GRID Co.,Ltd. Patentee before: SHANGHAI RESEARCH INSTITUTE OF CHEMICAL INDUSTRY Co.,Ltd. |