CN107046253B - Cable water inlet humidifying treatment device - Google Patents
Cable water inlet humidifying treatment device Download PDFInfo
- Publication number
- CN107046253B CN107046253B CN201710313818.2A CN201710313818A CN107046253B CN 107046253 B CN107046253 B CN 107046253B CN 201710313818 A CN201710313818 A CN 201710313818A CN 107046253 B CN107046253 B CN 107046253B
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- sleeve
- movable
- clamping ring
- cable
- joint sleeve
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention provides a cable water inlet humidifying treatment device which comprises two groups of quick sealing connection fixing assemblies arranged at two ends of a cable, a heating assembly connected with one quick sealing connection fixing assembly through a pipeline, a vacuum pump connected with the other quick sealing connection fixing assembly through a pipeline, and a nitrogen generator connected with the heating assembly through a pipeline, wherein the front part of the nitrogen generator is provided with a gas booster. The quick sealing connection fixing component comprises a joint sleeve, an elastic sealing device positioned at one end of the joint sleeve, a pipe fitting connector positioned at the other end of the joint sleeve, a temperature sensor, a humidity sensor and a pressure sensor positioned in the middle of the joint sleeve. The invention can quickly seal and connect the cable and the nitrogen supply pipeline, has high sealing speed and good effect, does not need to replace the gas cylinder in the middle, and has high working efficiency. The quick sealing connection fixing component has the functions of flow control, temperature, humidity and pressure sensing, and can greatly improve the dehumidifying effect. The whole structure of the equipment is simple, and the manufacturing and using costs are low.
Description
Technical Field
The invention relates to a cable treatment machine, in particular to a cable water inlet humidifying treatment device.
Background
After the high-voltage cable is wetted by water, the water can enter the cable insulation surface or conductor surface, the water tree phenomenon is induced under the action of high voltage, and the water tree phenomenon gradually extends into the insulation, so that the insulation is aged at an accelerated speed until breakdown occurs. If the water tree is full of the whole cable, the cable can only be replaced, so that large-area power failure is caused, and huge economic loss and serious social negative influence are brought to the country. In the prior art, when the cable is subjected to water removal and moisture removal, methods of vacuumizing and filling nitrogen are considered, for example: both patent CN203617045U and patent CN104716599a disclose a device for removing moisture by evacuating with a vacuum pump and filling nitrogen gas with a nitrogen gas cylinder. The device is long to some cable length, and the sinle silk clearance is little, and when the big cable of batch carries out the dehumidification processing, because receive cable length long, the influence that the air vent is little, nitrogen gas fills the effect and not ideal, and the problem that exists mainly has: 1. the bottled nitrogen has high cost, unstable pressure, low capacity, and the long cable is completely and fully treated, so that the nitrogen bottle needs to be replaced for a plurality of times, and the dehumidifying effect is poor, the efficiency is low and the cost is high; 2. when the cable is connected and sealed with the inflation pipeline, a sealing adhesive tape or sealant is adopted, the sealing operation needs long time, the sealant is difficult to remove, the air leakage phenomenon is easy to occur, and the cable with different section specifications is not suitable for dehumidifying operation; 3. the pressure and temperature of nitrogen gas are difficult to control, and the dehumidification effect is affected. In view of the above, it is necessary to provide a new device for treating water entering a cable to thoroughly solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a cable water inlet humidifying treatment device. The device has the advantages of low treatment cost, good treatment effect, simple structure, convenient use, safety and reliability.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a cable water inlet wet processing apparatus which characterized in that: the quick sealing connection fixing assembly comprises a joint sleeve, an elastic sealing device positioned at one end of the joint sleeve, a pipe fitting connector positioned at the other end of the joint sleeve, a temperature sensor positioned in the middle of the joint sleeve, a humidity sensor and a pressure sensor, wherein the elastic sealing device comprises a pressurizing sleeve head sleeved outside the end surface of the joint sleeve by utilizing a thread buckle, a movable outer clamping ring positioned in the joint sleeve, an elastic rubber ring and a fixed inner clamping ring, the fixed inner clamping ring is positioned at the innermost side, the fixed inner clamping ring comprises a fixed ring fixedly connected with the pipe wall of the joint sleeve, a fixed extrusion table mounted on the fixed ring, the movable outer clamping ring is positioned at the outer side of the fixed inner clamping ring, the outer end surface of the movable outer clamping ring is a movable extrusion sleeve capable of sliding in the joint sleeve, the movable extrusion sleeve is provided with an inward shrinking movable extrusion table, the movable extrusion sleeve and the movable extrusion table form a valve L-shaped sleeve is sleeved between the movable clamping ring and the inner clamping ring, the movable clamping ring is inserted into the pressurizing sleeve by utilizing a gap between the movable clamping sleeve and the movable clamping ring, the movable clamping ring is inserted into the rotatable sleeve, the pressurizing sleeve is arranged between the movable clamping ring and the movable clamping sleeve and the movable clamping ring is inserted into the rotatable sleeve, the pressurizing sleeve is arranged at the end surface of the fixed clamping ring, the front part of the nitrogen generator is provided with a gas booster.
As a further improvement of the technical scheme, the heating assembly comprises a heat-preserving pipe body, a heating pipe, a guide plate and a temperature probe, wherein the heating pipe, the guide plate and the temperature probe are arranged in the heat-preserving pipe body, one end of the heat-preserving pipe body is provided with an air inlet, the other end of the heat-preserving pipe body is provided with an air outlet, and the guide plate, the heating pipe and the temperature sensor are arranged between the air inlet and the air outlet.
As a further improvement of the technical scheme, the nitrogen generator is a membrane separation air separation nitrogen making machine, and the vacuum pump is a rotary vane vacuum pump.
As a further improvement of the technical scheme, a bearing gasket is arranged between the pressurizing clamping ring and the movable outer clamping ring.
The cable water inlet humidifying treatment device provided by the invention has the advantages that the cable and the nitrogen supply pipeline can be quickly and hermetically connected by adopting the quick sealing connection fixing assembly, the sealing speed is high, the effect is good, and no nitrogen leakage exists. The nitrogen generator is utilized to continuously supply nitrogen, so that the gas cylinder is prevented from being replaced midway, and the working efficiency of the cable water inlet humidifying treatment can be effectively improved. The quick sealing connection fixing component has flow control and temperature, humidity and pressure sensing functions, and can realize accurate control on the pressure and temperature of nitrogen filled into the cable by combining with the heating component and the pressure control component of the nitrogen generator, so that the dehumidifying effect can be greatly improved. The device has simple integral structure, low manufacturing and using cost and convenient maintenance.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the cable water inlet humidifying treatment device.
Fig. 2 is a schematic structural view of the quick seal connection fixing assembly according to the present invention.
Fig. 3 is a schematic view of the structure of the heating assembly according to the present invention.
The corresponding relation between the names and the reference numerals in the figure is as follows:
1, a fixing component is connected in a quick sealing way; 2 heating the assembly; 3, a vacuum pump; 4, a nitrogen generator; 5 a gas booster; 10 bearing pads; 11 joint sleeve; 12 temperature sensor, 13 pressure sensor; 14 pipe fittings; 15 pressurizing the sleeve head; 16 elastic rubber rings; 17, moving an outer clamping ring; 18, fixing an inner clamping ring; a 19 flow valve; 15-1 a pressurized snap ring; 15-2 nut sleeves; 17-1 moving the extrusion sleeve; 17-2 moving the extrusion table; 18-1 a securing ring; 18-2, fixing an extrusion table; 21 a heat-insulating pipe body; 22 heating pipes; 23 deflector; 24 humidity sensor; 25 air inlets; a 26 air outlet; 100 cable.
Detailed Description
The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings, and the embodiment is only a part of embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a cable water inlet humidifying device, comprising two groups of quick sealing connection fixing components 1 respectively installed at two ends of a cable 100, a heating component 2 connected with one of the quick sealing connection fixing components through a pipeline, a vacuum pump 3 connected with the other quick sealing connection fixing component through a pipeline, and a nitrogen generator 4 connected with the heating component through a pipeline, wherein the quick sealing connection fixing component 1 comprises a joint sleeve 11, an elastic sealing device positioned at one end of the joint sleeve, a pipe fitting connector 14 positioned at the other end of the joint sleeve, a temperature sensor 12 positioned in the middle of the joint sleeve, a humidity sensor 24 and a pressure sensor 13, the elastic sealing device comprises a pressurizing sleeve head 15 sleeved outside the end surface of the joint sleeve by utilizing a thread buckle, a movable outer clamping ring 17 positioned in the joint sleeve, an elastic rubber ring 16 and a fixed inner clamping ring 18, wherein the fixed inner clamping ring 18 is positioned at the innermost side and comprises a fixed ring 18-1 fixedly connected with the pipe wall of the joint sleeve and a fixed extrusion table 18-2 arranged on the fixed ring, the movable outer clamping ring is positioned at the outer side of the fixed inner clamping ring, a movable extrusion sleeve 17-1 capable of sliding in the joint sleeve is arranged outside the movable outer clamping ring 17, the outer end surface of the movable extrusion sleeve is provided with a movable extrusion table 17-2 which is contracted inwards, the movable extrusion sleeve and the movable extrusion table form a sleeve pipe with an L-shaped section, the elastic rubber ring 16 is arranged in the movable extrusion sleeve, the outer part of the pressurizing sleeve head 15 is provided with a nut sleeve 15-2 which can rotate by utilizing a wrench, the outer end of the nut sleeve is provided with the pressurizing clamping ring 15-1 which contracts inwards, a gap for accommodating the insertion of the movable extrusion sleeve is reserved between the fixed extrusion table 18-2 and the pipe wall of the joint sleeve 11, a movable gap is reserved between the pressurizing clamping ring 15-1 and the end surface of the joint sleeve, the pressurizing clamping ring 15-1 can be propped against the movable outer clamping ring 16 to move inwards by rotating the pressurizing sleeve head 15, a flow valve 19 is arranged on the pipe fitting connector, and the front part of the nitrogen generator is provided with the gas booster 5. The heating component 2 comprises a heat-preserving pipe body 21, a heating pipe 22, a guide plate 23 and a temperature probe 24 which are positioned in the heat-preserving pipe body, wherein one end of the heat-preserving pipe body is provided with an air inlet 25, the other end of the heat-preserving pipe body is provided with an air outlet 26, and the guide plate, the heating pipe and the temperature probe are positioned between the air inlet and the air outlet. The nitrogen generator 4 is a membrane separation air separation nitrogen generator, and the vacuum pump 3 is a rotary vane vacuum pump. A bearing gasket 10 is arranged between the pressurizing clamping ring 15-1 and the movable outer clamping ring 17.
In the concrete implementation, the diameter sizes of the inner pipes of the pressurizing clamping ring 15-1, the movable extrusion table 17-2, the elastic rubber ring 16 and the fixed extrusion table 18-2 are firstly set according to the diameter size of the insulating jacket of the cable, so that the cable can penetrate, and the pipe fitting connector 14 is connected with the vacuum pump 3, the heating assembly 2 and the nitrogen generator 4 through pipelines. Removing dust and sundries outside the cable insulation layers, respectively installing two groups of quick sealing connection fixing assemblies 1 at two ends of the cable, limiting the cable end faces and the inner side edges of the fixing rings 18-1, screwing the pressurizing sleeve 15, inwards extruding the bearing gasket 10 by using the pressurizing sleeve 15-1, inwards pushing the movable outer sleeve 17 by the bearing gasket 10, enabling the movable extrusion table 17-2 of the movable outer sleeve 17 to extrude the elastic rubber ring 16, enabling the elastic rubber ring 16 to be blocked by the fixing extrusion table 18-2 and not to continuously move inwards, deforming under the pressure of the movable extrusion table 17-2, and continuing to rotate the pressurizing sleeve 15 only by inwards contracting the elastic rubber ring 16 to extrude the cable insulation outer edges, so that the joint sleeve 11 and the cable insulation are quickly connected in a sealing manner, and then pumping, nitrogen filling and heating operation can be performed.
When the cable with serious water inflow is treated, the vacuum pump 3 is utilized to carry out drainage operation, the vacuum pump 3 is connected with the quick sealing connection fixing component at one end of the cable, the flow valve 19 of the quick sealing connection fixing component at the other end of the cable is in a semi-closed state, so that the air suction quantity is large, the air suction quantity is small, the air suction force of the vacuum pump 3 is increased, and the drainage of the cable is accelerated. And stopping vacuumizing when no water drop exists on the cable and only air bubbles are discharged. And then the half-closed flow valve 19 is opened, the heating component 2 and the nitrogen generator 4 are opened to charge heated and pressurized nitrogen, the pressure of the nitrogen is kept at 1-1.5MP by the gas booster 5, the heating component 2 heats the nitrogen, and the temperature of the nitrogen of the quick sealing connection fixing component at the air inlet end is 75-80 ℃. After the temperature of the air outlet end is 45-50 ℃ and the relative humidity is stabilized below 5%, nitrogen is filled for 12 hours, and after the absorption ratio test is qualified, the water in the cable can be considered to be clean, and the cable can be used normally. When the cable without water inflow and only wetted is treated, the drainage operation is not needed, and the nitrogen filling and the moisture removal can be directly carried out. The nitrogen gas produced by the nitrogen generator enters the heat-preserving pipe body 21 of the heating component 2 through the air inlet 25, the heating pipe 22 heats the nitrogen gas, the flow speed of the nitrogen gas in the heat-preserving pipe body 21 can be reduced by the guide plate 23, and the temperature probe 24 is used for monitoring the gas temperature in the heat-preserving pipe body 21. The quick sealing connection fixed component at two ends of the cable can monitor air pressure, temperature and humidity at the same time, so that an operator can accurately control the temperature and pressure of the nitrogen. The flow valve 19 at the air outlet end can be closed at the initial stage of nitrogen filling, the pressure sensor is observed, if the pressure of the air outlet end and the pressure of the air inlet end are close and kept stable, the insulating protection layer in the middle of the cable is not damaged, the dehumidification operation can be further carried out, otherwise, whether the cable insulation is damaged or not is required to be checked, or whether the quick sealing connection fixing component is completely sealed is checked.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments described above will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides a cable water inlet wet processing apparatus which characterized in that: the quick sealing connection fixing assembly comprises a joint sleeve, an elastic sealing device positioned at one end of the joint sleeve, a pipe fitting connector positioned at the other end of the joint sleeve, a temperature sensor positioned in the middle of the joint sleeve, a humidity sensor and a pressure sensor, wherein the elastic sealing device comprises a pressurizing sleeve head sleeved outside the end surface of the joint sleeve by utilizing a thread buckle, a movable outer clamping ring positioned in the joint sleeve, an elastic rubber ring and a fixed inner clamping ring, the fixed inner clamping ring is positioned at the innermost side, the fixed inner clamping ring comprises a fixed ring fixedly connected with the pipe wall of the joint sleeve, a fixed extrusion table mounted on the fixed ring, the movable outer clamping ring is positioned at the outer side of the fixed inner clamping ring, the outer end surface of the movable outer clamping ring is a movable extrusion sleeve capable of sliding in the joint sleeve, the movable extrusion sleeve is provided with an inward shrinking movable extrusion table, the movable extrusion sleeve and the movable extrusion table form a valve is arranged between the movable extrusion sleeve and the inner clamping ring, the movable clamping ring is inserted into the pressurizing sleeve by utilizing a gap between the movable clamping sleeve and the movable clamping ring, the movable clamping ring is inserted into the pressurizing sleeve is arranged between the movable clamping sleeve and the movable clamping ring, the pressurizing sleeve is arranged between the movable clamping ring and the movable clamping sleeve is inserted into the rotatable sleeve, the pressurizing sleeve is arranged at the inner end surface of the pressurizing sleeve, and the pressurizing sleeve is clamped between the fixed clamping sleeve and the fixed sleeve, the front part of the nitrogen generator is provided with a gas booster; the heating assembly comprises a heat-preserving pipe body, a heating pipe, a guide plate and a temperature probe, wherein the heating pipe, the guide plate and the temperature probe are positioned in the heat-preserving pipe body; the nitrogen generator is a membrane separation air separation nitrogen generator, and the vacuum pump is a rotary vane vacuum pump.
2. The cable entry moisture treatment device of claim 1, wherein: and a bearing gasket is arranged between the pressurizing clamping ring and the movable outer clamping ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313818.2A CN107046253B (en) | 2017-05-05 | 2017-05-05 | Cable water inlet humidifying treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313818.2A CN107046253B (en) | 2017-05-05 | 2017-05-05 | Cable water inlet humidifying treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107046253A CN107046253A (en) | 2017-08-15 |
| CN107046253B true CN107046253B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710313818.2A Active CN107046253B (en) | 2017-05-05 | 2017-05-05 | Cable water inlet humidifying treatment device |
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| CN (1) | CN107046253B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514900B (en) * | 2017-10-13 | 2023-11-07 | 国网河北省电力公司衡水供电分公司 | Cable dehumidification equipment |
| CN111524659A (en) * | 2020-03-20 | 2020-08-11 | 宁波东方电缆股份有限公司 | Method for repairing unqualified insulation resistance of flexible mineral insulated metal sheathed cable |
| CN115117799B (en) * | 2022-07-12 | 2023-11-28 | 远东电缆有限公司 | Treatment method for water inflow or damage and damp of extra-high voltage cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519759A (en) * | 1982-08-23 | 1985-05-28 | Cable Technology Laboratories, Inc. | Apparatus for making shrinkable tubing |
| WO1987000344A1 (en) * | 1985-06-24 | 1987-01-15 | Pugh Paul F | Gas pressurized cable and conduit system |
| CN203617045U (en) * | 2013-11-18 | 2014-05-28 | 国家电网公司 | Cable vacuum pumping and moisture removing device |
| CN104716599A (en) * | 2015-03-30 | 2015-06-17 | 中国矿业大学(北京) | Quick repairing technology for high voltage cable which enables water to enter and is affected with dampness |
-
2017
- 2017-05-05 CN CN201710313818.2A patent/CN107046253B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519759A (en) * | 1982-08-23 | 1985-05-28 | Cable Technology Laboratories, Inc. | Apparatus for making shrinkable tubing |
| WO1987000344A1 (en) * | 1985-06-24 | 1987-01-15 | Pugh Paul F | Gas pressurized cable and conduit system |
| CN203617045U (en) * | 2013-11-18 | 2014-05-28 | 国家电网公司 | Cable vacuum pumping and moisture removing device |
| CN104716599A (en) * | 2015-03-30 | 2015-06-17 | 中国矿业大学(北京) | Quick repairing technology for high voltage cable which enables water to enter and is affected with dampness |
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| CN107046253A (en) | 2017-08-15 |
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