CN115654257A - Pressurized plugging method and pressurized plugging structure - Google Patents
Pressurized plugging method and pressurized plugging structure Download PDFInfo
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- CN115654257A CN115654257A CN202211317202.XA CN202211317202A CN115654257A CN 115654257 A CN115654257 A CN 115654257A CN 202211317202 A CN202211317202 A CN 202211317202A CN 115654257 A CN115654257 A CN 115654257A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 229920005989 resin Polymers 0.000 claims abstract description 91
- 239000011347 resin Substances 0.000 claims abstract description 91
- 239000010410 layer Substances 0.000 claims abstract description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims abstract description 21
- 230000000903 blocking effect Effects 0.000 claims abstract description 21
- 239000000741 silica gel Substances 0.000 claims abstract description 21
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 21
- 239000012790 adhesive layer Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 17
- 229910018503 SF6 Inorganic materials 0.000 claims description 14
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical group FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 14
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 8
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- 150000002367 halogens Chemical class 0.000 claims description 8
- 238000003331 infrared imaging Methods 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The embodiment of the invention discloses a leakage stopping method under pressure and a leakage stopping structure under pressure, wherein the leakage stopping method under pressure specifically comprises the following steps: confirming a leakage part on the electrical equipment; applying a liquid photocurable resin to the leakage portion while providing light to the leakage portion to cure the photocurable resin to form a resin layer; applying an adhesive to the leaking part to reinforce and form an adhesive layer on the outer side of the resin layer; and coating silica gel on the leakage part to reinforce and form a silica gel layer outside the adhesive layer. The liquid light-cured resin can be quickly cured under the illumination condition, so that the leakage part can be instantly blocked to resist the pressure inside the electrical equipment, the cured light-cured resin forms a firm resin layer, the resin layer can be reinforced through the adhesive layer, the reliability of blocking the leakage part is improved, the leakage part can be reinforced again through the silica gel layer, the silica gel layer serves as an outer layer and has better hydrophobicity, and the waterproof performance of the blocked leakage part is improved.
Description
Technical Field
The invention relates to the technical field of pressurized leakage stoppage, in particular to a pressurized leakage stoppage method and a pressurized leakage stoppage structure.
Background
Due to sulfur hexafluoride (SF) 6 ) The gas insulation strength is high, and the arc extinguishing performance, the cooling characteristic, the incombustibility and the thermal stability are excellent, and the cost can be effectively reduced and the equipment volume can be reduced, so the gas insulation material is widely applied to high-voltage electrical equipment. SF 6 The leakage phenomenon of the gas-filled electrical equipment often occurs due to the production technology, the manufacturing process, the operation life, the overhauling capacity and other reasons, and the gas leakage influences the electrical equipment, the environment and the occupational health of operators.
Treatment of leakage defects is an effective way to reduce the defect rate. However, the traditional technology for leaking stoppage under pressure has certain defects in the implementation process, and when the adhesive is used, the pressure of gas in the equipment is high, so that the problems that the surface of the equipment is easy to bulge after being repaired, the adhesive film is damaged and the like are caused.
Disclosure of Invention
The invention aims to provide a leakage blocking method under pressure and a leakage blocking structure under pressure, and aims to solve the problems that the surface of equipment is easy to bulge and the adhesive film is damaged after repairing due to high internal gas pressure of the equipment when an adhesive is used in the conventional leakage blocking technology under pressure.
In a first aspect, the invention provides a method for plugging under pressure, which comprises the following steps:
confirming a leakage position on the electrical equipment;
applying a liquid photocurable resin to the leak portion while providing light to the leak portion to cure the photocurable resin to form a resin layer;
applying an adhesive to the leaking part to reinforce and form an adhesive layer on the outer side of the resin layer;
and coating silica gel on the leakage part so as to reinforce the outer side of the adhesive layer to form a silica gel layer.
In one embodiment, the step of applying a liquid light-curable resin to the leakage portion while providing light to the leakage portion to cure the light-curable resin into a resin layer includes:
providing a leakage stoppage device, wherein the leakage stoppage device comprises a resin part and an ultraviolet part;
the resin component is used for outputting liquid light curing resin to the leakage position, and simultaneously the ultraviolet component provides ultraviolet rays to the leakage position;
the light-cured resin is cured to form a resin layer.
In one embodiment, the step of providing the leakage blocking device comprises a resin part and an ultraviolet part, wherein the ultraviolet part is an ultraviolet LED lamp, the power of the ultraviolet LED lamp is 3W-80W, and the ultraviolet LED lamp can emit ultraviolet rays with the wavelength of 390nm-400 nm.
In one embodiment, the step of applying an adhesive to the leaking part to reinforce and form an adhesive layer on the outer side of the resin layer, wherein the adhesive is an epoxy resin adhesive.
In one embodiment, the step of applying an adhesive to the leaking portion to reinforce and form an adhesive layer on the outer side of the resin layer, wherein the adhesive is embedded with a fiber cloth.
In one embodiment, the fiber cloth is one or more of glass fiber cloth, carbon fiber cloth and aramid fiber cloth.
In one embodiment, the step of confirming the leakage position on the electrical equipment specifically comprises:
providing a halogen leak detector, an infrared imaging leak detector and a foaming agent;
preliminarily judging the air leakage range of the electrical equipment by adopting a halogen leak detector;
detecting a leakage area in the air leakage range by adopting an infrared imaging leak detector in the air leakage range;
detecting a leak site within the leak region with a foaming agent at the leak region.
In one embodiment, after the step of identifying the leakage site on the electrical device, the method further comprises: and cleaning the leakage part and the whole peripheral surface.
In one embodiment, during the execution of the pressure leakage blocking method, the electrical equipment is continuously operated, and the electrical equipment is sulfur hexafluoride gas-filled electrical equipment.
In a second aspect, the invention further provides an under-pressure leakage blocking structure, and the under-pressure leakage blocking structure is a structure subjected to under-pressure leakage blocking by adopting the under-pressure leakage blocking method of any one of the embodiments.
The embodiment of the invention has the following beneficial effects:
by adopting the under-pressure leakage blocking method and the under-pressure leakage blocking structure, liquid photo-curing resin is used for the leakage part, meanwhile, illumination is provided for the leakage part, so that the photo-curing resin is cured to form a resin layer, the liquid photo-curing resin can be rapidly cured under the illumination condition, the leakage part can be instantly blocked to resist the pressure inside the electrical equipment, the cured photo-curing resin forms a firm resin layer, further, an adhesive is used for the leakage part, so that an adhesive layer is formed by reinforcing the outer side of the resin layer, the resin layer can be reinforced, the reliability of blocking the leakage part is improved, further, the leakage part is coated with silica gel, so that a silica gel layer is formed by reinforcing the outer side of the adhesive layer, the leakage part can be re-reinforced, the silica gel layer serves as an outer layer, and has better hydrophobicity, so that the waterproof performance of the blocked leakage part is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a schematic view of an embodiment of a method for plugging an electric device with pressure.
Figure 2 is a schematic view of a plugging device according to an embodiment.
Fig. 3 is a flow chart of a method for plugging with pressure in one embodiment.
FIG. 4 is a detailed flow chart of the formation of a resin layer in one embodiment.
FIG. 5 is a detailed flow diagram of leak site identification in one embodiment.
Reference numerals: 10. an electrical device; 11. a leak site; 21. a resin layer; 22. an adhesive layer; 23. a silica gel layer; 30. a plugging device; 31. an output port; 32. an ultraviolet part; 33. a control knob; 34. a control switch; 35. a pen body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Sulfur hexafluoride gas-filled electrical equipment has the following hazards due to the fact that the internal air pressure of the equipment is large, the operation time is long, materials are aged, gas leakage occurs, and the leakage phenomenon occurs:
in terms of equipment operation: after the gas leakage of the inflating equipment occurs, water vapor in the air can permeate into the equipment from the leakage part, so that SF in the equipment is caused 6 The gas humidity is increased, and the insulation property is reduced; SF 6 When the gas pressure in the equipment is lower than a critical state due to leakage, a signal is sent out and a circuit breaker control loop (an opening loop and a closing loop) is locked, and the circuit breaker can not be opened or closed; the work of leakage air supplement increases the labor intensity of workers, and simultaneously SF (sulfur hexafluoride) possibly caused by the failure of the check valve of the air supplement port to effectively recover after air supplement 6 Large area leakage of the oil pipe jeopardizes the safe operation of the equipment.
In terms of environmental and occupational health of the personnel: SF 6 When the gas leaks, the specific gravity of the gas is about 5 times that of the air, so that potential personal safety risks of workers entering a leakage site are increased, and even harm is brought to the health of the workers; SF 6 The gas is one of six greenhouse gases specified in the United nations climate Change convention and the Jingdu protocol, SF 6 The greenhouse effect is 23900 times of that of carbon dioxide, and the carbon dioxide is not easy to degrade, so that the environment which we rely on for living is threatened and damaged.
The embodiment of the invention discloses a leakage stopping method under pressure, wherein SF 6 The method for implementing the pressurized leakage stoppage on the gas-filled electrical equipment has the advantages of capability of operating at normal temperature and low pressure, higher safety and reliability, and internal protective layer and SF of the electrical equipment 6 The gas can not be damaged and polluted, and SF does not need to be recovered in the implementation process 6 And the like, and has higher implementation feasibility.
Referring to fig. 1 and fig. 3, an embodiment of a method for plugging a leak under pressure includes the following steps:
s120, the leakage site 11 is checked on the electrical device 10.
S140, a liquid light-curable resin is applied to the leak portion 11, and light is applied to the leak portion 11 to cure the light-curable resin to form the resin layer 21.
And S160, reinforcing and forming an adhesive layer 22 outside the resin layer 21 by using an adhesive for the leakage part 11.
And S180, coating silica gel on the leakage part 11 to reinforce and form a silica gel layer 23 on the outer side of the adhesive layer.
It can be understood that, by using the method for plugging with pressure of the present invention, the liquid light-cured resin is used for the leaking portion 11, and at the same time, the light is provided for the leaking portion 11, so that the light-cured resin is cured to form the resin layer 21, and since the liquid light-cured resin can be rapidly cured under the light condition, the leaking portion 11 can be instantly plugged, the pressure inside the electrical device 10 is resisted, and the cured light-cured resin forms the firm resin layer 21.
Further, use gluing agent to leaking position 11, form gluing layer 22 in order to consolidate in the resin layer 21 outside, in order to consolidate resin layer 21, improve the reliability of leaking 11 shutoff in position, furthermore, to leaking position 11 coating silica gel, consolidate in order to form silica gel layer 23 at gluing agent layer outside, not only can consolidate once more leaking position 11, silica gel layer 23 is as the skin, still has better hydrophobicity, thereby improve the waterproof performance after leaking 11 shutoff in position, improve the shutoff quality.
In the present embodiment, the leak portion 11 is an etched spot, a perforation, a crack, or the like. When the electric pipeline container of the electric equipment 10 is corroded, perforated, cracked or leaked, the leakage plugging method with pressure of the invention can realize leakage plugging measures of continuous transportation, continuous pressure and no fire for the electric equipment 10, ensure the plugging quality, avoid the problems of bulging, broken glue film and the like, and has the characteristics of high speed of leakage plugging with pressure and good plugging effect.
In this embodiment, the silica gel is a hydrophobic material, and is used as a hydrophobic layer in the process of plugging.
In an embodiment, referring to fig. 2 and 4, the step S140 specifically includes:
and S142, providing the leakage stopping device 30, wherein the leakage stopping device 30 comprises a resin part and an ultraviolet part 32.
S144, the resin component is used for outputting the liquid light-curing resin to the leakage portion 11, and the ultraviolet component 32 provides the ultraviolet ray to the leakage portion 11.
And S146, curing the light-cured resin to form the resin layer 21.
The liquid light-cured resin is output to the leakage part 11 by the resin component, and ultraviolet light is provided to the leakage part 11 by the ultraviolet component 32, so that the liquid light-cured resin can be rapidly cured under the ultraviolet light condition, and the reliability of plugging of the leakage part 11 is ensured.
Specifically, the leakage stoppage device 30 outputs the light-cured resin to perform leakage stoppage on the electrical device 10 under pressure, and in the leakage stoppage process, the leakage stoppage device 30 can output the light-cured resin and simultaneously irradiate and cure the light-cured resin by ultraviolet rays, so that the purpose of quickly curing the light-cured resin is achieved.
In step S142, the ultraviolet component 32 is an ultraviolet LED lamp, the power of the ultraviolet LED lamp is 3W-80W, and the ultraviolet LED lamp can emit ultraviolet rays with a wavelength of 390nm-400 nm.
Specifically, the wavelength of ultraviolet light emitted by the ultraviolet LED lamp can be selected to be 390nm, 395nm or 400nm.
In this embodiment, the leakage stoppage device 30 is an instant curing leakage stoppage pen. The leakage blocking device 30 can continuously output the light-cured resin and simultaneously provide ultraviolet rays to instantaneously cure the light-cured resin to form the resin layer 21.
The leakage stopping device 30 comprises a pen body 35, a resin component and an ultraviolet component 32, wherein the resin component and the ultraviolet component 32 are arranged on the pen body 35, the leakage stopping device 30 further comprises a control knob 33 and a control switch 34, the control knob 33 and the control switch 34 are both arranged on the pen body 35, the control knob 33 is electrically connected with the resin component and used for controlling the flow of light curing resin output by the resin component, the control switch 34 is electrically connected with the ultraviolet component 32 and used for controlling the ultraviolet component 32 to output ultraviolet light, an output port 31 used for outputting light curing output is arranged at the front end of the pen body 35, the light curing resin is stored in the pen body 35, and an LED lamp bead of the ultraviolet component 32 is arranged at the front end of the pen body 35 and surrounds the output port 31, so that the output light curing resin can be instantly cured, and the timeliness of illumination of the light curing resin output by ultraviolet light is ensured.
In an embodiment, in step S160, the adhesive is an epoxy resin adhesive.
Further, the fiber cloth is embedded in the adhesive, so that the leakage part 11 is sealed in a strengthening mode, and the fiber cloth is high-strength fiber cloth, so that the strength of the adhesive layer 22 can be improved.
Specifically, the fiber cloth is one or more of glass fiber cloth, carbon fiber cloth and aramid fiber cloth.
In an embodiment, referring to fig. 5, step S120 specifically includes:
and S122, providing a halogen leak detector, an infrared imaging leak detector and a foaming agent.
S124, a halogen leak detector is used to preliminarily determine the gas leakage range of the electrical device 10, and the halogen leak detector is used to preliminarily determine whether the electrical device 10 leaks, so as to roughly detect the gas leakage range of the electrical device 10.
And S126, detecting a leakage area in the air leakage range by using an infrared imaging leak detector in the air leakage range, wherein the infrared imaging leak detector is used for further reducing the air leakage range of the electrical equipment 10 or accurately finding a leakage point.
S128, in the leakage area, a foaming agent is adopted to detect the leakage part 11 in the leakage area, the foaming agent can visually observe the leakage point through the size and the foaming speed of formed foam, and the size and the accurate position of the leakage point are preliminarily judged.
Through the detection measures, the leakage position 11 can be quickly and accurately confirmed, and therefore the leakage position 11 can be blocked under pressure. The halogen leak detector, the infrared imaging detector and the foaming agent are used in combination to comprehensively determine the accurate position of the leakage part 11, namely the pressurized leakage stopping implementing part.
Further, after step S120, the method further includes: the leak portion 11 is cleaned of the anticorrosive coating, and the leak portion 11 and the entire peripheral surface are cleaned. And thoroughly removing the anti-corrosion layer and the oxide at the leakage part and the periphery by using a surface treating agent until the natural color of the base material is displayed, and immediately performing the pressurized plugging work after cleaning to ensure the quality of the pressurized plugging in order to prevent secondary oxidation.
Specifically, during the implementation of the under-pressure leak stopping method, the electrical equipment 10 continues to operate, and the electrical equipment10 is a sulfur hexafluoride gas filled electrical apparatus 10. By adopting the under-pressure leakage blocking method to carry out the under-pressure leakage blocking on the sulfur hexafluoride gas-filled electrical equipment 10, the protective layer and the SF in the electrical equipment 10 can be blocked 6 The gas is not destroyed and polluted, and SF is not recycled 6 The leakage stoppage is carried out under the condition of (1), so that the leakage stoppage cost can be effectively reduced, the leakage stoppage time is shortened, and the workload of operating personnel is reduced.
Referring to fig. 1 to 5, an embodiment of an under-pressure leak stopping structure is a structure after an under-pressure leak is stopped by using an under-pressure leak stopping method according to any one of the above embodiments. The liquid light-cured resin is used for the leakage part 11, meanwhile, illumination is provided for the leakage part 11, so that the light-cured resin is cured to form the resin layer 21, the liquid light-cured resin can be rapidly cured under the illumination condition, the leakage part 11 can be instantly blocked, the pressure inside the electrical equipment 10 is resisted, the cured light-cured resin forms the firm resin layer 21, further, an adhesive is used for the leakage part 11, an adhesive layer 22 is formed by reinforcing the outer side of the resin layer 21, the resin layer 21 can be reinforced, the reliability of blocking of the leakage part 11 is improved, further, the leakage part 11 is coated with silica gel, a silica gel layer 23 is formed by reinforcing the outer side of the adhesive layer, the leakage part 11 can be reinforced again, the silica gel layer 23 serves as an outer layer, good hydrophobicity is achieved, and the waterproof performance of the leakage part 11 after blocking is improved.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A pressurized plugging method is characterized by comprising the following steps:
confirming a leakage position on the electrical equipment;
applying a liquid photocurable resin to the leak portion while providing light to the leak portion to cure the photocurable resin to form a resin layer;
applying an adhesive to the leaking part to reinforce and form an adhesive layer on the outer side of the resin layer;
and coating silica gel on the leakage part so as to reinforce the outer side of the adhesive layer to form a silica gel layer.
2. The method for plugging a leak under pressure according to claim 1, wherein the step of applying a liquid photocurable resin to the leak portion while providing light to the leak portion to cure the photocurable resin into a resin layer comprises:
providing a leakage stoppage device, wherein the leakage stoppage device comprises a resin part and an ultraviolet part;
the resin component is used for outputting liquid light curing resin to the leakage position, and simultaneously the ultraviolet component provides ultraviolet rays to the leakage position;
the light-cured resin is cured to form a resin layer.
3. The method for blocking leakage under pressure according to claim 2, wherein a leakage blocking device is provided, the leakage blocking device comprises a resin component and an ultraviolet component, the ultraviolet component is an ultraviolet LED lamp, the power of the ultraviolet LED lamp is 3W-80W, and the ultraviolet LED lamp can emit ultraviolet rays with the wavelength of 390nm-400 nm.
4. The method for plugging with pressure according to claim 1, wherein an adhesive is applied to the leaking part to reinforce and form an adhesive layer on the outer side of the resin layer, and the adhesive is an epoxy resin adhesive.
5. An apparatus for leak stoppage with pressure according to claim 4, wherein an adhesive is applied to the leaking portion to reinforce the outside of the resin layer to form an adhesive layer, and a fiber cloth is embedded in the adhesive.
6. The pressurized plugging method according to claim 5, wherein the fiber cloth is one or more of glass fiber cloth, carbon fiber cloth and aramid fiber cloth.
7. The method for plugging a leak under pressure according to claim 1, wherein the step of confirming the leak site on the electrical equipment specifically comprises:
providing a halogen leak detector, an infrared imaging leak detector and a foaming agent;
preliminarily judging the air leakage range of the electrical equipment by adopting the halogen leak detector;
in the air leakage range, detecting a leakage region in the air leakage range by using the infrared imaging leak detector;
detecting a leak site within the leak region with the foaming agent at the leak region.
8. The method for plugging with pressure according to claim 7, wherein the step of identifying the leakage site on the electrical equipment further comprises: and cleaning the leakage part and the whole peripheral surface.
9. The under-pressure leak stopping method according to claim 1, wherein the electrical equipment is continuously operated during execution of the under-pressure leak stopping method, and the electrical equipment is sulfur hexafluoride gas-filled electrical equipment.
10. A pressurized plugging structure, which is characterized in that the pressurized plugging structure is a structure subjected to pressurized plugging by adopting the pressurized plugging method of any one of claims 1 to 9.
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