CN103474943A - Novel sealing cable joint structure of low-temperature immersed pump - Google Patents
Novel sealing cable joint structure of low-temperature immersed pump Download PDFInfo
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- CN103474943A CN103474943A CN201310471724XA CN201310471724A CN103474943A CN 103474943 A CN103474943 A CN 103474943A CN 201310471724X A CN201310471724X A CN 201310471724XA CN 201310471724 A CN201310471724 A CN 201310471724A CN 103474943 A CN103474943 A CN 103474943A
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Abstract
The invention relates to a low-temperature immersed pump, and in particular relates to a novel sealing cable joint structure of the low-temperature immersed pump, which is required by chemical industry, industrial and mining enterprises, scientific research for national defense and the like. The novel sealing cable joint structure comprises a joint support pillar, wherein a mounting channel and an outflow channel which are communicated are formed in the joint support pillar; a sealing pipe is sheathed in the mounting channel and is internally provided with a sealing channel; a sealing plug which is attached to the inner wall of the sealing channel is arranged at one end, close to the joint support pillar, of the sealing channel; a press cover is arranged at one end, far away from the joint support pillar, of the sealing channel; an insulation material embedding layer is arranged between the press cover and the sealing plug; a cable guiding channel penetrates through the sealing plug, the insulation material embedding layer and the press cover; and a press cover nut is arranged at the outer side of one end, close to the press cover, of the sealing pipe. The novel sealing cable joint structure has good sealing performance and low production cost.
Description
Technical field
the present invention relates to the low temperature immersed pump, be specially the required new type low temperature immersed pump of the industry sealing cable junctions structures such as a kind of chemical industry, industrial and mining enterprises, national defence scientific research.
Background technology
low temperature immersed pump cable outlet joint is high for seal request at present, temperature, the pressure variable gradient is large, lower-powered use occasion, flow out in order to the leakage that prevents danger in the pump pond and along cable the problems such as dangerous that produce, mostly be the air seal joint or adopt the sealing ring hermetically-sealed construction, the air seal joint is actual is dual-seal, the first order adopts the sealing ring sealing more, second level sealing is provided with air storing cavity, adopt gas-flow closure, pour inert gas, pressure is a little more than sealed medium pressure, its structure is very complicated, production process is very loaded down with trivial details, cost is higher, at the pressure changing environment, need the configuration automatic pressure regulating device, to guarantee that its gas-flow closure site pressure is a little more than sealed medium pressure, reliability requirement to the gas voltage-regulating system is higher, otherwise can affect the normal operation of unit, air seal needs outer distribution source, for inflammable and explosive environment, increased the difficulty of field management, after the primary seal timeliness, joint is changed in maintenance, essential integral replacing, sealing reliability is poor, and maintenance cost is higher, its working pressure of sealing ring hermetically-sealed construction is lower, generally is not more than 0.2MPa, the multiplex environment little in temperature rate of change, and general variations in temperature is not more than 10 ℃, and this kind is not suitable for the occasion that variations in temperature is large, pressure is higher.
Summary of the invention
the purpose of this invention is to provide the new type low temperature immersed pump sealing cable junctions structure that a kind of outlet cable seal is better, production cost is lower.
above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of new type low temperature immersed pump sealing cable junctions structure, comprise the joint fore-set, there is the flow pass of passage being installed and being connected with described installation passage in described joint fore-set, described installation channel sleeve is equipped with sealed tube, there is seal channel in described sealed tube, described seal channel is provided with near joint fore-set one end the sealing plug fitted with described seal channel inwall, described seal channel is provided with gland away from joint fore-set one end, there is the insulating material buring layer between described gland and sealing plug, through described sealing plug, insulating material buring layer and gland are provided with cable guiding road, the pressured lid of the described sealed tube one end outside is provided with gland nut.
in technique scheme, for low temperature immersed pump outlet cable, one end connects the inner liquid motor of diving in pump pond, an end is connected with power supply by anti-explosion terminal box, cable out passes through the joint fore-set in the pump pond, and lead and pass by cable, cable guiding aperture, road in sealing plug is slightly less than the cryocable wire diameter, under stressed effect, after the sealing plug distortion, can realize sealing function.Every branch cable is through after sealing plug, utilize the pre-pressing frock to carry out pre-pressing to sealing plug, cable and sealing plug, sealing plug and sealed tube are fitted tightly, the preliminary realization seals, take out compression tooling, form the insulating material buring layer to sealing plug top fill insulant, insulating material is selected insulating powder, pack into gland and gland nut, tighten, realize the secondary seal of cable, as found to leak, compress again after can continuing to be screwed into gland nut or increasing the filling insulating powder, guaranteed the reliability promptness of maintenance.
as to of the present invention preferably, gland is furnished with the alignment pin that can insert in it.
as to of the present invention preferably, sealing plug has conical section.This shape is better good by the sealing effectiveness after the pretension crush seal.
as preferably sealing plug two is cylindricality to of the present invention, in the middle of conical section is positioned at.
as to of the present invention preferably, sealing plug is the polytetrafluoroethylene plug.
beneficial effect of the present invention: this structure has solved the problem that current cable outlet joint sealing maintainability is poor, production is complicated, production cost requirement is high, improve part reliability, reduce production costs, improved the outlet cable seal reliability, reduced production cost, and then improved the operational reliability of unit, improved the maintainability of unit simultaneously, shorten maintenance cycle and cost, used simple to operationly, saved manufacturing cost.
The accompanying drawing explanation
fig. 1 is the structural representation of the embodiment of the present invention 1.
in figure: 1, joint fore-set, 10, passage is installed, 11, flow pass, 2, sealed tube, 20, seal channel, 3, sealing plug, 4, gland, 5, the insulating material buring layer, 6, cable guiding road, 7, gland nut, 8, alignment pin, 30, conical section.
Embodiment
following specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification, but as long as all are subject to the protection of Patent Law in claim scope of the present invention.
Claims (5)
1. a new type low temperature immersed pump sealing cable junctions structure, it is characterized in that: comprise joint fore-set (1), the flow pass (11) that there is installation passage (10) in described joint fore-set (1) and be connected with described installation passage (10), described installation passage (10) is set with sealed tube (2), there is seal channel (20) in described sealed tube (2), described seal channel (20) is provided with near joint fore-set (1) one end the sealing plug (3) fitted with described seal channel (20) inwall, described seal channel (20) is provided with gland (4) away from joint fore-set (1) one end, there is insulating material buring layer (5) between described gland (4) and sealing plug (3), through described sealing plug (3), insulating material buring layer (5) and gland (4) are provided with cable guiding road (6), the pressured lid of described sealed tube (2) (4) the one end outsides are provided with gland nut (7).
2. a kind of new type low temperature immersed pump sealing cable junctions structure according to claim 1 is characterized in that: gland (4) is furnished with the alignment pin (8) that can insert in it.
3. a kind of new type low temperature immersed pump sealing cable junctions structure according to claim 1 and 2, it is characterized in that: sealing plug (3) has conical section (30).
4. a kind of new type low temperature immersed pump sealing cable junctions structure according to claim 3, it is characterized in that: sealing plug (3) two is cylindricality, in the middle of conical section (30) is positioned at.
5. a kind of new type low temperature immersed pump sealing cable junctions structure according to claim 4, it is characterized in that: sealing plug (3) is the polytetrafluoroethylene plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471724XA CN103474943A (en) | 2013-10-11 | 2013-10-11 | Novel sealing cable joint structure of low-temperature immersed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471724XA CN103474943A (en) | 2013-10-11 | 2013-10-11 | Novel sealing cable joint structure of low-temperature immersed pump |
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| Publication Number | Publication Date |
|---|---|
| CN103474943A true CN103474943A (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310471724XA Pending CN103474943A (en) | 2013-10-11 | 2013-10-11 | Novel sealing cable joint structure of low-temperature immersed pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202274A (en) * | 2015-09-17 | 2015-12-30 | 中国航空工业集团公司沈阳发动机设计研究所 | Sealing device for test lead wire installing seat |
| CN107086517A (en) * | 2017-06-14 | 2017-08-22 | 山东科瑞井控系统制造有限公司 | A kind of New type detachable cable penetration device |
| CN109899680A (en) * | 2019-02-22 | 2019-06-18 | 太平洋海洋工程（舟山）有限公司 | A kind of cable penetrating sealing device for FSRU |
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| CN2057239U (en) * | 1989-11-27 | 1990-05-16 | 杭州水泵总厂 | Outlet device of oil-filled submersible electric pump |
| CN2166533Y (en) * | 1993-05-26 | 1994-05-25 | 辽河石油勘探局职工技术协作服务中心 | Special cable connector for oil immersible motor |
| CN2739854Y (en) * | 2004-09-08 | 2005-11-09 | 上海中航泵业制造有限公司 | Submersible pump cable wiring integrated seal |
| CN2741243Y (en) * | 2004-09-20 | 2005-11-16 | 大港油田集团有限责任公司 | Well mouth electric power cable sealer of oil submerged electric pump |
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| CN203522104U (en) * | 2013-10-11 | 2014-04-02 | 湖州三井低温设备有限公司 | Novel sealing cable joint structure of low-temperature immersed pump |
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2013
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|---|---|---|---|---|
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| CN2166533Y (en) * | 1993-05-26 | 1994-05-25 | 辽河石油勘探局职工技术协作服务中心 | Special cable connector for oil immersible motor |
| CN2739854Y (en) * | 2004-09-08 | 2005-11-09 | 上海中航泵业制造有限公司 | Submersible pump cable wiring integrated seal |
| CN2741243Y (en) * | 2004-09-20 | 2005-11-16 | 大港油田集团有限责任公司 | Well mouth electric power cable sealer of oil submerged electric pump |
| CN2907016Y (en) * | 2005-09-21 | 2007-05-30 | 天津市油田采油成套设备有限公司 | Integral compressed type lead-out cable connector |
| EP1978616A1 (en) * | 2007-04-06 | 2008-10-08 | Ksb S.A.S | Wall bushing and manufacturing method thereof |
| CN201328034Y (en) * | 2008-12-23 | 2009-10-14 | 上海东方泵业(集团)有限公司 | Submerged pump cable sealing structure |
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| CN202817681U (en) * | 2012-07-24 | 2013-03-20 | 上海伊丰新能源科技有限公司 | Low-temperature cable seal joint |
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| 谭宏博等: "液化天然气潜液泵关键技术及研发方案", 《现代化工》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202274A (en) * | 2015-09-17 | 2015-12-30 | 中国航空工业集团公司沈阳发动机设计研究所 | Sealing device for test lead wire installing seat |
| CN107086517A (en) * | 2017-06-14 | 2017-08-22 | 山东科瑞井控系统制造有限公司 | A kind of New type detachable cable penetration device |
| CN107086517B (en) * | 2017-06-14 | 2024-02-20 | 威飞海洋装备制造有限公司 | Novel split type cable traversing device |
| CN109899680A (en) * | 2019-02-22 | 2019-06-18 | 太平洋海洋工程（舟山）有限公司 | A kind of cable penetrating sealing device for FSRU |
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Application publication date: 20131225 |