CN107514900A - Cable dehumidification equipment - Google Patents
Cable dehumidification equipment Download PDFInfo
- Publication number
- CN107514900A CN107514900A CN201710954975.1A CN201710954975A CN107514900A CN 107514900 A CN107514900 A CN 107514900A CN 201710954975 A CN201710954975 A CN 201710954975A CN 107514900 A CN107514900 A CN 107514900A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- cable
- pneumatic head
- pressure valve
- air pressure
- 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.)
- Granted
Links
- 238000007791 dehumidification Methods 0.000 title claims abstract description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 249
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 124
- 239000007789 gas Substances 0.000 claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract 2
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000005060 rubber Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 230000006698 induction Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 240000005572 Syzygium cordatum Species 0.000 description 2
- 235000006650 Syzygium cordatum Nutrition 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
Abstract
The present invention is applied to electrical equipment technical field, there is provided a kind of cable dehumidification equipment, including source nitrogen, nitrogen heater, pneumatic head, the more gas distributors of a change, cable to be dehumidified；The source nitrogen is connected with the input of the nitrogen heater, the output end of the nitrogen heater becomes more gas distributors with the pneumatic head and described one respectively and is connected, the pneumatic head is connected with the oversheath of the cable to be dehumidified, described one becomes more gas distributors is connected with the core sheath of the cable to be dehumidified, using the drying nitrogen after heating,, can be to cable cover(ing) and the fast and effective hydrofuge dehumidifying of core to the moisture in cable cover(ing) and core is discharged into significant effect；The more gas distributors of a change, described one become more gas distributors and are connected with the oversheath of the cable to be dehumidified, the core sheath of the cable to be dehumidified and use sealing structure described in this equipment, and simple installation is quick, ensures air-tightness.This equipment is simple and reliable, and one is operable, saves cost of labor.
Description
Technical field
The invention belongs to electrical equipment technical field, more particularly to a kind of cable dehumidification equipment.
Background technology
Insulated cable is widely used in power distribution network, after cable puts into operation, except excessively stream, overvoltage and laying temperature are to cable
Outside insulating properties have an impact, water also has very important influence as a kind of electrolyte to insulating performance of cable, as cable is whole
Termination leakage cruelly is in outdoor, and rainwater is slowly penetrated into inside cable by the binding post of cable to be accumulated, these electrolyte part
Accumulate in the inner sheath packed layer of cable, a part is accumulated in inside cable core, when these water, flow to cable terminal
During with transition joint, in the presence of highfield, in the place that cable core insulation is weak, " water tree " phenomenon can be formed, led
The increase of cable dielectric loss is sent a telegraph, insulating properties reduce, and most of reason of cable fault is exactly because " water tree " phenomenon.
The content of the invention
In view of this, the embodiments of the invention provide a kind of cable dehumidification equipment, using the nitrogen of heating to cable cover(ing)
Carry out removing wet trade with cable core inflation, realize the effect to cable inner sheath and core hydrofuge dehumidifying.
The embodiment of the present invention provides a kind of cable dehumidification equipment, including source nitrogen, nitrogen heater, pneumatic head and one become
More gas distributors；The source nitrogen is connected with the input of the nitrogen heater, the output end point of the nitrogen heater
Do not become more gas distributors with the pneumatic head and described one to be connected, the oversheath of pneumatic head connection cable to be dehumidified, described one
Become the core sheath that more gas distributors connect cable to be dehumidified.
Further, the source nitrogen is connected with the input of the nitrogen heater using high-pressure hose, junction
Tightened with hose clamp；The output end of the nitrogen heater becomes more gas distributors by pipe fitting threeway and the pneumatic head and described one
Connection.
Further, the pneumatic head be connected with the oversheath of cable to be dehumidified, described one become more gas distributors with it is to be dehumidified
The core sheath connection of cable is connected using sealing structure：The sealing structure is included with externally threaded connecting tube, circular glue
Circle, convex pressure pad and tapped iron；The externally threaded connecting tube of band passes through the circular cushion rubber and the convex pressure
Pad is connected with the tapped iron, and the circular cushion rubber is pressed into the externally threaded connecting tube of band, the convex pressure pad
It is arranged on above circular cushion rubber.
Further, the source nitrogen is nitrogen cylinder or nitrogen making machine.
Further, the nitrogen heater includes nitrogen heating cavity, U heating rods and temperature detect switch (TDS)；The U heating
Rod is built in inside the nitrogen heating cavity, and the temperature detect switch (TDS) is arranged on outside the nitrogen heating cavity, the temperature control
Switch is connected with the U heating rods；The nitrogen heating cavity includes front port and rear port, before the nitrogen heating cavity
Port is connected with the source nitrogen, and the rear port of the nitrogen heating cavity becomes more points of gas with the pneumatic head and described one respectively
Box connects.
Further, the nitrogen heater also includes earth leakage protective device, and the earth leakage protective device is opened with the temperature control
Connection connects.
Further, the temperature detect switch (TDS) includes thermocouple and relay, the coil of the thermocouple and the relay
Connection, the U heating rods are connected with the normal open switch of the relay.
Further, the pneumatic head is made of seamless welding technique, and the pneumatic head includes front port and rear port,
The front port of the pneumatic head is connected with the nitrogen heater, the rear port of the pneumatic head and the cable to be dehumidified
Oversheath connects.
Further, the more gas distributors of a change are made of seamless welding technique, and described one, which becomes more gas distributors, includes one
Individual front port and multiple branch ports, described one front port for becoming more gas distributors are connected with the nitrogen heater, and described one
Become in each branch port of more gas distributors and be equipped with an air valve, described one become each branch ports of more gas distributors respectively with
The core sheath connection of the cable to be dehumidified.
Further, the cable dehumidification equipment also includes air pressure valve, and the air pressure valve includes main air pressure valve, tie point
Air pressure valve and the second branch road air pressure valve；Described main air pressure valve one end is connected with the source nitrogen, the main air pressure valve other end with
The input connection of the nitrogen heater；Described tie point air pressure valve one end and the output end of the nitrogen heater
Connection, the tie point air pressure valve other end are connected with the pneumatic head；Described second branch road air pressure valve one end and the nitrogen
The output end connection of gas heater, the second branch road air pressure valve other end become more gas distributors with described one and are connected.
Cable dehumidification equipment beneficial effect provided in an embodiment of the present invention is：Compared with prior art, the present invention uses
Drying nitrogen after heating, can be to cable inner sheath and line to the moisture in cable cover(ing) and core is discharged into significant effect
The fast and effective hydrofuge dehumidifying of core, equipment is simple, and one is operable, saves cost of labor；The pneumatic head, one become more gas distributors
It can repair the old and utilize scraps, recycle, economize on resources cost.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the structural representation of cable dehumidification equipment provided in an embodiment of the present invention；
Fig. 2 is each part connection diagram of the complete operation of cable dehumidification equipment provided in an embodiment of the present invention；
Fig. 3 is the expanded schematic diagram of sealing structure provided in an embodiment of the present invention；
Fig. 4 is the section schematic diagram of sealing structure provided in an embodiment of the present invention；
Fig. 5 is nitrogen heater electrical schematic diagram provided in an embodiment of the present invention；
Fig. 6 is each part connection diagram for the complete operation of cable dehumidification equipment that another embodiment of the present invention provides.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The embodiment of the present invention provides a kind of cable dehumidification equipment, as shown in figure 1, cable dehumidification equipment provided by the invention
Structural representation, including source nitrogen 101, nitrogen heater 102, pneumatic head 103 and one become more gas distributors 104, the cable
Dehumidification equipment dehumidifying operative goals includes cable jacket 105 and cable core sheath 106；The source nitrogen 101 and the nitrogen
The input connection of gas heater 102, the output end of the nitrogen heater 102 respectively with the pneumatic head 103 and institute
State the more gas distributor connections 104 of a change；The pneumatic head 103 is connected with the cable jacket 105, and described one becomes more gas distributors
106 are connected with the cable core sheath 107.
The present invention is using the drying nitrogen after heating, to the moisture in cable cover(ing) and core is discharged into significant effect, energy
Enough to cable inner sheath and the fast and effective hydrofuge dehumidifying of core, equipment is simple, and one is operable, saves cost of labor；It is described
Pneumatic head, one, which become more gas distributors, to repair the old and utilize scraps, and recycle, economize on resources cost.
Further, the source nitrogen（Nitrogen cylinder）107 is soft using high pressure with the input of the nitrogen heater 102
Pipe is connected, and junction is tightened with hose clamp；The output end of the nitrogen heater 102 passes through pipe fitting threeway 109 and the inflation
First 103 and described one become more gas distributors 104 and connect.
As shown in Fig. 2 each part connection diagram of the complete operation of cable dehumidification equipment provided in an embodiment of the present invention, bag
Include nitrogen cylinder 107, air induction hose 108, nitrogen heater 102, threeway 109, air-out hose first 110, air-out hose second 111,
Pneumatic head 103, one becomes more gas distributor 104, cable jacket 105 to be dehumidified and cable core sheaths 106 to be dehumidified；It is described
Air induction hose 108, the air-out hose first 110 and the air-out hose second 111 are high-pressure hose；The nitrogen heater
The nitrogen that the nitrogen cylinder 107 that 102 heating connect through the input flexible pipe 108 exports；The threeway 109 connects the nitrogen
The input of heater 102 and the air-out hose first 110, the air-out hose second 111；The air-out hose first 110 and institute
State pneumatic head 103 to connect, the pneumatic head 103 is connected with the cable jacket 105 to be dehumidified, and described one becomes more gas distributors
106 are connected with the cable core sheath 107 to be dehumidified, the pneumatic head 103, described one become more gas distributors 104 with it is described
Cable jacket 105 to be dehumidified, the connection of cable core sheath 106 to be dehumidified use sealing structure 112.
Further, as shown in figure 3, the expansion signal of the sealing structure of cable dehumidification equipment provided in an embodiment of the present invention
Figure；Fig. 4 show the section schematic diagram of the sealing structure of cable dehumidification equipment provided in an embodiment of the present invention；The original creation screws
Formula sealing structure is included with externally threaded 201, three circular cushion rubbers 202 of connecting tube, convex pressure pad 203 and tapped iron
204；Several circular cushion rubbers 202 are pressed into the externally threaded connecting tube 201 of the band, and the convex pressure pad 203 is pressed in described three
Above individual circular cushion rubber 202, the axial location of fixed three circular cushion rubbers 202, the tapped iron 204 screws in
The externally threaded connecting tube 201 of band, is gradually torqued-up to fastening, axially pushes the convex pressure pad, compresses three circles
Cushion rubber 202, make the described three circular axial shrinkages of cushion rubber 202, be radially expanded.
Further, need, by airtight detection, to ensure air-tightness before operation after the completion of the cable dehumidification equipment connection.Gas
Close detection experiment is filled with high pressure nitrogen using nitrogen at room source into the cable dehumidification equipment path of airtight connection state, uses
Electronics air gauge is tested.Nitrogen pressure is filled with not higher than 0.6 MPa, is stablized 4 minutes, air gauge registration is not less than 0.5 million
Pa simultaneously records numerical value；Again after timing 5 minutes, difference is necessarily less than 98 pas between numerical value and record numerical value after air pressure registration declines.
Further, the source nitrogen is nitrogen cylinder or nitrogen making machine.Cable dehumidification equipment embodiment provided by the invention is adopted
Use nitrogen cylinder.
Further, the nitrogen heater includes nitrogen heating cavity, U heating rods and temperature detect switch (TDS)；The U heating
Rod is built in inside the nitrogen heating cavity, and the temperature detect switch (TDS) is arranged on above the nitrogen heating cavity, the temperature control
Switch is connected with the U heating rods；The nitrogen heating cavity is high temperature high voltage resistant airtight cavity, there is front port and rear port two
Individual port, the nitrogen heating cavity front port are connected with the source nitrogen, and the nitrogen heating cavity rear port passes through pipe fitting
Threeway becomes more gas distributors with the pneumatic head and described one and is connected respectively.
Further, the cable dehumidification equipment also includes earth leakage protective device, and the earth leakage protective device is opened with the temperature control
Connection connects.
Further, the temperature detect switch (TDS) includes thermocouple and relay, and the thermocouple connects with the relay coil
Connect, the U heating rods connect with relay normally open switch.
Further, Fig. 5 is nitrogen heater electrical schematic diagram provided in an embodiment of the present invention.The nitrogen heating dress
Power interface access 220V electric mains are put, power input is terminated with earth leakage circuit-breaker QF；Monitoring is aobvious in real time for digital display thermometer
Show electric thermo-couple temperature；Thermocouple induction institute heated nitrogen temperature, and connected with relay KM control coils, switch SB controls are logical
It is disconnected；U heating rod heated nitrogen both ends are connected by relay KM normal open switch with power supply；Indicator lamp and relay KM normally closed switch
Series connection access power supply.
Further, the temperature control heating device is built in the nitrogen heating cavity with the U heating rods, heats nitrogen
Gas, the digital display thermometer show nitrogen temperature in the nitrogen heater.The relay KM is as temperature detect switch (TDS) and institute
Thermocouple cooperation is stated, keeps nitrogen heater internal temperature constant.Switch SB closures, the relay KM coil energizations, institute
Two normal open switch closures of relay KM are stated, the U heating rods work, heated nitrogen, and the thermocouple is persistently overheating therewith；Institute
The disconnection of relay KM normally closed switch is stated, the indicator lamp does not work；Heated nitrogen temperature reaches design temperature, and the thermocouple is heated
Reverse potential difference is sufficiently large, the increase of relay KM coils both ends reverse potential difference, coil blackout, the relay KM two
Normal open switch disconnects, and the U heating rods power-off is stopped, the relay KM normally closed switch closure conducting, the indicator lamp
It is bright；Nitrogen temperature is gradual, and the thermocouple reverse potential difference declines, and the relay KM coils power up once more, the relay
Two normal open switch of device KM close again, the U heating rods work, continue heated nitrogen, the relay KM normally closed switch is again
Secondary disconnection, the indicator lamp go out.
Further, the pneumatic head is made of seamless welding technique, and the pneumatic head includes front port and rear port,
The pneumatic head front port is connected by pipe fitting threeway with the nitrogen heating cavity rear port, and the pipe fitting threeway passes through pipe fitting
Mend core and be connected to the nitrogen heating cavity rear port, the pneumatic head front port is led to by high-pressure hose and the pipe fitting three
Connect, the high-pressure hose is fastened with the pneumatic head front port and the tee pipe fitting junction with hose clamp；The pneumatic head
Rear port is connected with cable jacket, i.e., the rear port of described pneumatic head is the connecting tube of the sealing structure.
Further, the more gas distributors of a change are made of seamless welding technique, and described one, which becomes more gas distributors, includes one
Individual front port and several branch ports, after described one becomes more gas distributor front ports by pipe fitting threeway and the nitrogen heating cavity
Port connects, and the pipe fitting threeway mends core by pipe fitting and is connected to the nitrogen heating cavity rear port, and described one becomes more points of gas
Box front port is connected by high-pressure hose with the pipe fitting threeway, the high-pressure hose with described one become more gas distributor front ports and
The tee pipe fitting junction is fastened with hose clamp；Described one, which becomes more gas distributor branch ports, an air valve, according to detection
Cable core number adjustment described one becomes the number that more gas distributor branch port air valves are opened, and described one becomes more gas distributor branch ends
Mouth is connected with the cable core sheath, i.e., described one becomes each branch port of more gas distributors as the connection of the sealing structure
Pipe.
Further, the cable dehumidification equipment also includes air pressure valve, and the air pressure valve includes main air pressure valve, tie point
Air pressure valve and the second branch road air pressure valve；Described main air pressure valve one end is connected with the source nitrogen, the main air pressure valve other end with
The input connection of the nitrogen heater；Described tie point air pressure valve one end and the output end of the nitrogen heater
Connection, the tie point air pressure valve other end are connected with the pneumatic head；Described second branch road air pressure valve one end and the nitrogen
The output end connection of gas heater, the second branch road air pressure valve other end become more gas distributors with described one and are connected.
Further, as shown in fig.6, each portion for the complete operation of cable dehumidification equipment that another embodiment of the present invention provides
Part connection diagram, including nitrogen cylinder 107, main air pressure valve F1, air induction hose 108, nitrogen heater 102, threeway 109, go out
Gas flexible pipe first 110, air-out hose second 111, branch road air pressure valve F2, branch road air pressure valve F3, pneumatic head 103, one become more gas distributors
104th, cable jacket 105 to be dehumidified and cable core sheath 106 to be dehumidified；The air induction hose 108, the outlet are soft
Pipe first 110 and the air-out hose second 111 are high-pressure hose；The nitrogen heater 102 is heated through the input flexible pipe 108
The nitrogen that the nitrogen cylinder 107 of connection exports, nitrogen break-make is controlled by the main air pressure valve F1；The threeway 109 connects institute
State the output end of nitrogen heater 102 and the branch road air pressure valve F2, the branch road air pressure valve F3；The branch road air pressure valve F2 with
The air-out hose first 110 is connected, and the air-out hose first 110 is connected with the pneumatic head 103, the pneumatic head 103 and institute
Cable jacket 105 to be dehumidified is stated to connect；The branch road air pressure valve F3 is connected with the air-out hose second 111, the outlet
Flexible pipe second 111 becomes more gas distributors 104 with described one and is connected, and described one becomes more gas distributors 104 and the cable core to be dehumidified
Sheath 106 connects；The pneumatic head 103, described one become more gas distributors 104 and the cable jacket 105 to be dehumidified, described
The connection of cable core sheath 106 to be dehumidified uses sealing structure 112.
Further, nitrogen crosses range request air pressure constant as 0.5 million in dehumidifying cable work in the cable dehumidification equipment
Pa.The main line air pressure valve controls the nitrogen cylinder to input to the air pressure abundance of heating nitrogen in the nitrogen heater and closed
It is suitable, meet to continue drying out requirements of one's work below.Described two branch road air pressure valves control respectively treats that oversheath dehumidifies described in guarantee
Cable and it is described treat core dehumidifying cable in circulation nitrogen pressure it is constant be 0.5 MPa.
Further, when the cable dehumidification equipment operation is completed, whether tail gas is examined with whether silica-gel desiccant changes colour
Dry to judge.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of cable dehumidification equipment, it is characterised in that become more points of gas including source nitrogen, nitrogen heater, pneumatic head and one
Box；The source nitrogen is connected with the input of the nitrogen heater, the output end of the nitrogen heater respectively with institute
State pneumatic head to connect with the described one more gas distributors of change, the pneumatic head connects the oversheath of cable to be dehumidified, and described one becomes more points
Gas box connects the core sheath of cable to be dehumidified.
2. cable dehumidification equipment according to claim 1, it is characterised in that the source nitrogen and the nitrogen heater
Input using high-pressure hose connect, junction is tightened with hose clamp；The output end of the nitrogen heater passes through pipe fitting three
It is logical to be connected with the pneumatic head and the more gas distributors of a change.
3. cable dehumidification equipment according to claim 1, it is characterised in that the outer shield of the pneumatic head and cable to be dehumidified
Set connection, described one become more gas distributors and are connected with the core sheath of cable to be dehumidified using sealing structure connection：The sealing
Structure is included with externally threaded connecting tube, circular cushion rubber, convex pressure pad and tapped iron；The externally threaded connection of band
Pipe is connected by the circular cushion rubber and the convex pressure pad with the tapped iron, described in the circular cushion rubber press-in
With externally threaded connecting tube, the convex pressure pad is arranged on above circular cushion rubber.
4. cable dehumidification equipment according to claim 1, it is characterised in that the source nitrogen is nitrogen cylinder or nitrogen making machine.
5. cable dehumidification equipment according to claim 1, it is characterised in that the nitrogen heater heats including nitrogen
Cavity, U heating rods and temperature detect switch (TDS)；The U heating rods are built in inside the nitrogen heating cavity, the temperature detect switch (TDS) installation
Outside the nitrogen heating cavity, the temperature detect switch (TDS) is connected with the U heating rods；The nitrogen heating cavity includes front end
Mouth and rear port, the front port of the nitrogen heating cavity are connected with the source nitrogen, the rear port of the nitrogen heating cavity
Become more gas distributors with the pneumatic head and described one respectively to be connected.
6. cable dehumidification equipment according to claim 5, it is characterised in that the nitrogen heater, which also includes electric leakage, to be protected
Device is protected, the earth leakage protective device is connected with the temperature detect switch (TDS).
7. cable dehumidification equipment according to claim 5, it is characterised in that the temperature detect switch (TDS) includes thermocouple and relay
Device, the thermocouple are connected with the coil of the relay, and the U heating rods are connected with the normal open switch of the relay.
8. cable dehumidification equipment according to claim 1, it is characterised in that the pneumatic head uses seamless welding technique system
Into the pneumatic head includes front port and rear port, and the front port of the pneumatic head is connected with the nitrogen heater, described
The rear port of pneumatic head is connected with the oversheath of the cable to be dehumidified.
9. cable dehumidification equipment according to claim 1, it is characterised in that described one, which becomes more gas distributors, uses seamless welding
Technique is made, and described one, which becomes more gas distributors, includes a front port and multiple branch ports, and described one becomes the front end of more gas distributors
Mouth is connected with the nitrogen heater, and an air valve is equipped with each branch port of the more gas distributors of a change, described
One, which becomes core sheath of each branch port of more gas distributors respectively with the cable to be dehumidified, is connected.
10. cable dehumidification equipment according to claim 1, it is characterised in that also include including air pressure valve, the air pressure valve
Main air pressure valve, tie point air pressure valve and the second branch road air pressure valve；Described main air pressure valve one end is connected with the source nitrogen, described
The main air pressure valve other end is connected with the input of the nitrogen heater；Described tie point air pressure valve one end and the nitrogen
The output end connection of heater, the tie point air pressure valve other end are connected with the pneumatic head；The second branch road gas
Pressure valve one end is connected with the output end of the nitrogen heater, and the second branch road air pressure valve other end becomes more points with described one
Gas box connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954975.1A CN107514900B (en) | 2017-10-13 | 2017-10-13 | Cable dehumidification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954975.1A CN107514900B (en) | 2017-10-13 | 2017-10-13 | Cable dehumidification equipment |
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| Publication Number | Publication Date |
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| CN107514900A true CN107514900A (en) | 2017-12-26 |
| CN107514900B CN107514900B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710954975.1A Active CN107514900B (en) | 2017-10-13 | 2017-10-13 | Cable dehumidification equipment |
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