CN116608674A - Nitrogen drying device and method for water inlet drying of power cable - Google Patents
Nitrogen drying device and method for water inlet drying of power cable Download PDFInfo
- Publication number
- CN116608674A CN116608674A CN202310610518.6A CN202310610518A CN116608674A CN 116608674 A CN116608674 A CN 116608674A CN 202310610518 A CN202310610518 A CN 202310610518A CN 116608674 A CN116608674 A CN 116608674A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- drying
- cable
- power cable
- air
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 238000001035 drying Methods 0.000 title claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims description 21
- 239000004020 conductor Substances 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 230000009466 transformation 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a nitrogen drying device and a method for water inlet drying of a power cable, which relate to the technical field of power lines and electric wire and cable professional matching application, and comprise a nitrogen cylinder, an air duct, a sealing sleeve, an air tap, a heat-shrinkable plugging cap and a cable; the top end of the nitrogen cylinder is connected with a control valve, and a pressure gauge is fixed on the control valve; one end of the air duct is communicated with the air outlet of the control valve and is fastened and fixed; one end of the sealing sleeve is connected with a cable in a sealing way, and the air tap is fixed at the other end of the sealing sleeve; the opening end of the thermal shrinkage plugging cap is connected with an air tap, and the cap end is connected with an air duct. The end to be dried of the cable is sleeved at one end of the sealing sleeve and is fastened and fixed; binding and fixing the other end of the air duct on the thermal shrinkage plugging cap; opening a control valve; nitrogen enters the cable body; and detecting the water inlet end of the cable. The cable after drying of the invention has the advantages that the whole physical and mechanical properties are not affected, and the treated cable has the same use effect and service life as the finished cable.
Description
Technical Field
The invention relates to the technical field of power line and wire and cable professional matching application, in particular to a nitrogen drying device and method for drying power cable water inlet.
Background
In recent years, with the development of modern high-intelligent cities, the dependence of power supply including household, electrical, office, security, information communication and the like on power transmission is particularly important; the special cable product for transmitting electric energy is the main equipment of power transmission and transformation engineering, and once the water entering the cable body is wetted, the cable body gradually forms water branch discharge under the action of a high-voltage electromagnetic field to destroy a main insulating layer until breakdown discharge occurs.
The quality assurance of cable construction and laying is very important for reliable operation of cables in the future. The water inflow hazard of the power cable is extremely large, and serious loss and potential safety hazard are brought to national economy construction; under specific environmental conditions, the cable is sometimes stored for a long time due to regional climate influence, and water vapor permeates into the cable body due to improper storage; in particular to a power cable for large-scale engineering in modern cities and a medium-high voltage power cable, which are mostly laid underground and need to often pass through roads, bridges, culverts and the like; because of weather or other reasons, more water is often accumulated in the cable trench, and the situation that the cable head is immersed in water for construction is unavoidable in the laying construction process; the cable is water-filled under the condition of natural disasters, such as heavy rain, flood or pipe penetration damage caused by buried construction, and water in the pipe and human factors; the cable head is inappropriately protected, is not tightly wrapped or is damaged, so that water vapor enters the cable body; in addition, when pulling and threading, the outer sheath and even the steel armor are sometimes scratched, which is particularly the case when mechanical pulling is used. Therefore, the quality of the cable construction and laying of the power line is very critical and important for ensuring reliable operation of the cable in the future; the power cable is extremely harmful in water inflow, the phenomenon of cable water inflow happens in special unexpected situations, and the problem of cable safety in large areas in cities can be caused.
The treatment mode of the cable water inlet before that is: the water inlet cable is directly cut to a place without water for scrapping treatment, or a new cable is replaced because the electric power is cut off not enough; thus causing great economic waste and also affecting longer construction time; processing new cables from new production requires a great deal of capital investment, production time and transportation process, affects construction period and time, and seriously affects economic property loss;
therefore, how to provide a nitrogen drying device and method for drying water inlet of a power cable, which physically dries water inlet of the cable end, avoids unnecessary waste and economic loss, and is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a nitrogen drying device and a method for drying water inflow of a power cable, which solve the problem of water inflow of the cable end under the unexpected situation by combining the user laying construction service process according to years of cable research, development, production and manufacturing working experience, and prevent unnecessary waste and economic loss of the cable.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a nitrogen drying apparatus for water inlet drying of a power cable, comprising: the device comprises a nitrogen bottle, an air duct, a sealing sleeve, an air tap and a thermal shrinkage plugging cap;
the nitrogen cylinder is sealed, and nitrogen is filled into the nitrogen cylinder; the top end of the nitrogen cylinder is detachably connected with a control valve, and a pressure gauge is fixed on the control valve;
one end of the air duct is communicated with the air outlet of the control valve and is fastened and fixed;
one end of the sealing sleeve can be in sealing communication with the end to be dried of the power cable; the air tap is fixed at the other end of the sealing sleeve; the opening end of the thermal shrinkage plugging cap is detachably connected with the mouth end of the air tap, and a through hole is formed in the cap end of the thermal shrinkage plugging cap, is inserted into the other end of the air duct and is communicated through the through hole.
Through the technical scheme, the cable drying device provided by the invention is simple and clear in structure, can be used for carrying out nitrogen pressurization drying on the water inlet cable, and avoids the defect that the traditional cable has to be cut off due to water inlet.
Preferably, in the above-mentioned nitrogen gas drying device for power cable water inlet drying, the other end of the air duct extends to the air tap position and is bound and fixed with the air tap. The binding mode is simple and convenient to connect, and can be firmly fastened, so that the air duct and the air tap are sealed.
Preferably, in the above-mentioned nitrogen gas drying device for drying the water inlet of the power cable, the air tap is a metal thread air tap. The air tap is connected with the thermal shrinkage plugging cap and the sealing sleeve, an air inlet cavity is formed in the sealing sleeve, nitrogen pressurization is facilitated, and meanwhile, the thread shape is convenient for fixing the air duct.
Preferably, in the above nitrogen drying device for water inlet drying of a power cable, the inner wall of the heat-shrinkable plugging cap is provided with threads, and the threads are connected with the air tap. Replace the traditional ordinary plugging cap of cable, both can carry out the shutoff to the cable, can connect air cock and seal cover when the cable intakes again, dry the cable.
Preferably, in the above-mentioned nitrogen gas drying device for power cable water inlet drying, the cable middle part is fixed with the center conductor, the outer parcel of center conductor has interior shielding layer, interior shielding layer parcel has the insulating layer outward, the outer parcel of insulating layer has outer shielding layer, outer shielding layer parcel has outer comprehensive protective sheath, outer comprehensive protective sheath is in depth in the seal cover to tie up fixedly. An air inlet cavity is formed between the cable drying end and the inside of the sealing sleeve, and nitrogen can drain water vapor in the cable through the air inlet cavity.
The invention also provides a nitrogen drying method for the water inlet of the power cable, which comprises the nitrogen drying device for the water inlet drying of the power cable in the technical scheme, and further comprises the following steps: a cable comprising the steps of:
s1, sleeving a to-be-dried end of the power cable in one end of the sealing sleeve, and fastening and fixing the to-be-dried end of the power cable;
s3, opening the control valve;
s4, adjusting and controlling the display value of the pressure gauge to be 0.1-0.15 MPa;
s5, detecting the water outlet end of the power cable.
Through the technical scheme, according to the water inlet nitrogen drying method for the power cable, the whole physical and mechanical properties of the dried cable are not affected, and the treated cable has the same use effect and service life as a finished cable.
Preferably, in the above method for drying the inlet water nitrogen of the power cable, nitrogen enters the air tap through the air duct. The pressure of nitrogen is used to force the water vapor inside the cable to flow out.
Preferably, in the above method for drying the inlet water and the nitrogen of the power cable, the water outlet end performs a moisture test by using test paper. For detecting the drying condition inside the cable.
Preferably, in the above method for drying the inlet nitrogen of the power cable, the nitrogen is high-purity nitrogen. The cable central conductor is not affected, and the whole physical and mechanical properties of the dried cable are not affected.
Preferably, in the method for drying the water inlet nitrogen of the power cable, the test paper is silica gel test paper or cobalt chloride test paper. The test paper is usually used for moisture test in laboratory air, and is blue before water absorption, pink after being soaked in water or water, and the drying condition in the cable can be judged through the change of color.
Preferably, in the method for drying the water inlet nitrogen of the power cable, after continuously filling nitrogen for 12-24 hours, the water is tested by using a drying test paper, and after the water is not tested, the nitrogen is continuously filled for 24 hours. The inside abundant dry safety of cable can be ensured, the life of cable that intakes is guaranteed simultaneously.
According to the technical scheme, the invention discloses a nitrogen drying device and a method for drying water inflow of a power cable, and compared with the prior art, the nitrogen drying device and the method have the following beneficial effects:
1. the cable after the device is adopted, the whole physical and mechanical properties cannot be affected, the service effect and the service life of the processed power cable are the same as those of a complete finished cable, and the defect that the traditional cable must be cut or scrapped due to water inflow is avoided.
2. The device has the advantages of simple structure, convenient installation and use and low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the connection of a nitrogen cylinder provided by the invention;
FIG. 2 is a schematic diagram of a connection of a plugging assembly according to the present invention;
FIG. 3 is a schematic diagram showing the connection of a drying device according to the present invention;
FIG. 4 is a schematic view of a cable structure according to the present invention;
fig. 5 is a schematic diagram of a cable dry connection according to the present invention.
Wherein:
1-a nitrogen cylinder; 2-a control valve; 3-a pressure gauge; 4-an airway; 5-thermal shrinkage plugging caps; 6-an air tap; 7-sealing sleeve; 8-a cable; 9-water outlet end.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
referring to fig. 1 to 3, an embodiment of the present invention discloses a nitrogen drying device for drying inlet water of a power cable, including: the nitrogen bottle 1, the air duct 4, the sealing sleeve 7, the air tap 6 and the thermal shrinkage plugging cap 5;
the nitrogen bottle 1 is sealed, and nitrogen is filled into the nitrogen bottle; the top end of the nitrogen cylinder 1 is detachably connected with a control valve 2, and a pressure gauge 3 is fixed on the control valve 2;
one end of the air duct 4 is communicated with the air outlet of the control valve 2 and is fastened and fixed;
one end of the sealing sleeve 7 can be communicated with the end to be dried of the power cable in a sealing way; the air tap 6 is fixed at the other end of the sealing sleeve 7; the open end of the thermal shrinkage plugging cap 5 is detachably connected with the mouth end of the air tap 6, and a through hole is formed in the cap end of the thermal shrinkage plugging cap 5, and the thermal shrinkage plugging cap is inserted into the other end of the air duct 4 and communicated with the air duct through the through hole.
In this embodiment, the air tap 6 is a metal thread air tap.
In order to further optimize the technical scheme, the other end of the air duct 4 extends to the position of the air tap 6 and is bound and fixed with the air tap 6.
In order to further optimize the technical scheme, the inner wall of the thermal shrinkage plugging cap 5 is provided with threads which are connected with the air tap 6.
The power cable drying device provided by the embodiment has the advantages of simple and clear structure, convenient installation and use and low manufacturing cost.
Example 2:
referring to fig. 4 to 5, this embodiment provides a method for drying inlet water and nitrogen gas of a power cable, including a nitrogen gas drying device for inlet water drying of a power cable in embodiment 1, further including: a cable 8;
in this embodiment, a central conductor 81 is fixed in the middle of the cable 8, an inner shielding layer 82 is wrapped outside the central conductor 81, an insulating layer 83 is wrapped outside the inner shielding layer 82, an outer shielding layer 84 is wrapped outside the insulating layer 83, and an outer comprehensive protective sleeve 85 is wrapped outside the outer shielding layer 84.
S1, taking off common plugging caps at two ends of a cable 8, sleeving a sealing sleeve 7 of a drying device on an outer comprehensive protective sleeve 85 of the end to be dried of the cable 8, and binding firmly by using a sealing adhesive tape and a steel wire;
s2, sleeving one end of the air duct 4 far away from the control valve 2 on the heat-shrinkable plugging cap 5, enabling the heat-shrinkable plugging cap 5 to fully extend into an opening of the air duct 4, and binding the air duct 4 and the air tap 6 firmly;
s3, slowly opening the control valve 2, and enabling nitrogen to enter an air inlet cavity between the sealed cable 8 and the sealing sleeve 7 along the air tap 6;
s4, controlling the display value of the pressure gauge 3 to be 0.1-0.15 MPa, and enabling nitrogen in the air inlet cavity to enter the cable 8 body under the pressure effect, so that water vapor is discharged.
S5, detecting the water outlet end 9 of the cable by using test paper, and drying when the color of the test paper is unchanged.
In order to further optimize the technical scheme, after continuously filling nitrogen for 12-24 hours, testing moisture by using a dry test paper, and after the moisture is not tested, continuously filling nitrogen for 24 hours. Ensuring the sufficient drying and safety of the inside of the cable.
In order to further optimize the technical scheme, the adopted nitrogen is high-purity nitrogen.
In order to further optimize the technical scheme, the test paper is silica gel test paper or cobalt chloride test paper, the test paper is blue before water absorption, and is pink after water absorption or water immersion, and the drying condition in the cable can be judged through the color change.
In the power cable drying method provided by the invention, the whole physical and mechanical properties of the power cable after the drying method are not affected, the dried power cable has the same use effect and service life as the power cable of a perfect finished product, and the defect that the traditional cable must be cut or scrapped due to water inflow is avoided.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
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 these embodiments 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 (9)
1. A nitrogen gas drying device for water inlet drying of a power cable, comprising: the device comprises a nitrogen bottle (1), an air duct (4), a sealing sleeve (7), an air tap (6) and a thermal shrinkage plugging cap (5);
the nitrogen cylinder (1) is sealed, and nitrogen is filled into the nitrogen cylinder; the top end of the nitrogen cylinder (1) is detachably connected with a control valve (2), and a pressure gauge (3) is fixed on the control valve (2);
one end of the air duct (4) is communicated with an air outlet of the control valve (2);
one end of the sealing sleeve (7) can be in sealing communication with the end to be dried of the power cable; the air tap (6) is fixed at the other end of the sealing sleeve (7); the opening end of the thermal shrinkage plugging cap (5) is detachably connected with the mouth end of the air tap (6), and a through hole is formed in the cap end of the thermal shrinkage plugging cap (5), and the thermal shrinkage plugging cap is inserted into the other end of the air duct (4) and is communicated with the air duct through the through hole.
2. A nitrogen drying device for water inlet drying of a power cable according to claim 1, characterized in that the other end of the air duct (4) extends to the position of the air tap (6) and is fixedly bound with the air tap (6).
3. A nitrogen drying apparatus for water inlet drying of power cables according to claim 1, characterized in that the air tap (6) is a metal screw-shaped air tap.
4. The nitrogen drying device for water inlet drying of the power cable according to claim 4, wherein the inner wall of the heat-shrinkable plugging cap (5) is provided with threads and is connected with the air tap (6) through threads.
5. The nitrogen gas drying device for water inlet drying of the power cable according to claim 1, further comprising a power cable (8), wherein a central conductor (81) is fixed in the middle of the power cable (8), an inner shielding layer (82) is wrapped outside the central conductor (81), an insulating layer (83) is wrapped outside the inner shielding layer (82), an outer shielding layer (84) is wrapped outside the insulating layer (83), an outer comprehensive protective sleeve (85) is wrapped outside the outer shielding layer (84), and the outer comprehensive protective sleeve (85) stretches into an opening in the bottom end of the sealing sleeve (7) and is fastened and fixed.
6. A method for drying inlet water and nitrogen of a power cable is characterized in that the nitrogen drying device for drying inlet water of the power cable is adopted for drying,
the method comprises the following steps:
s1, sleeving a to-be-dried end of the power cable (8) in one end of the sealing sleeve (7), and fastening and fixing the to-be-dried end;
s2, opening the control valve (2);
s3, adjusting and controlling the display value of the pressure gauge to be 0.1-0.15 MPa;
s4, detecting moisture of a water outlet end (9) of the power cable (8).
7. The method for drying water and nitrogen fed into a power cable according to claim 6, wherein the water outlet end (9) is subjected to moisture test by using test paper.
8. The method for drying water fed to a power cable according to claim 6, wherein the nitrogen is high purity nitrogen.
9. The method for drying water inlet nitrogen of power cable according to claim 8, wherein the test paper is silica gel test paper or cobalt chloride test paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310610518.6A CN116608674A (en) | 2023-05-29 | 2023-05-29 | Nitrogen drying device and method for water inlet drying of power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310610518.6A CN116608674A (en) | 2023-05-29 | 2023-05-29 | Nitrogen drying device and method for water inlet drying of power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116608674A true CN116608674A (en) | 2023-08-18 |
Family
ID=87677852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310610518.6A Pending CN116608674A (en) | 2023-05-29 | 2023-05-29 | Nitrogen drying device and method for water inlet drying of power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116608674A (en) |
-
2023
- 2023-05-29 CN CN202310610518.6A patent/CN116608674A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106786231A (en) | The online restorative procedure of insulating properties and device when a kind of cross-inked polyethylene power cable runs | |
| CN107404096A (en) | A kind of submerged cable crossing cabin part and waterstop sealing method | |
| CN208589765U (en) | Safety Monitoring Instruments signal cable superelevation is water-fast joint pressing device | |
| CN219624443U (en) | Nitrogen drying device for water inlet drying of power cable | |
| CN102035150B (en) | Waterproof drawing head of cable and mounting method thereof | |
| CN116608674A (en) | Nitrogen drying device and method for water inlet drying of power cable | |
| CN106410732A (en) | Electric power pipeline | |
| CN206135309U (en) | Cable drawing head and be equipped with cable structure of this cable drawing head | |
| CN107196255A (en) | The diameter adjustable sealing structure and its encapsulating method of a kind of cable penetration or poling | |
| CN103151755A (en) | Method and structure capable of improving reliability of downhole instrument connecting cable | |
| CN201661773U (en) | Sealing structure for incoming line hole of isolation transformer box | |
| JP4841253B2 (en) | Insulation oil leakage prevention method for power equipment terminals | |
| CN206834350U (en) | The heteromorphic connector main body of cable intermediate joint and its cable intermediate joint of composition | |
| CN206060092U (en) | A kind of plugging device of high tension cable and steel pipe | |
| CN206250692U (en) | A kind of processing unit of high-tension cable termination water inlet | |
| CN106814426B (en) | Guide optical cable plugging device and installation method thereof and power system transformer substation | |
| CN209692326U (en) | Gel insulation booth | |
| CN210517718U (en) | Be suitable for overhead conductor lag tube 10kV and below | |
| CN205159939U (en) | Medium voltage cable drawing head | |
| CN206806965U (en) | A kind of novel high polymer cable blocks sealing system | |
| CN207398723U (en) | Three core cable tracting head | |
| CN106356772A (en) | Cable traction head and cable structure with same | |
| CN208421349U (en) | A kind of cable splice closure | |
| CN206834709U (en) | A kind of cable connector | |
| CN207718927U (en) | A kind of RVVP shielded power supplies control cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |